Are the recent CS graduates from India that bad?

In the recent couple of weeks, I had not found much time to check out blogs on a very regular basis. But today I did find some free time, and so I did do a routine round-up of the blogs. In the process, I came across a couple of interesting posts by Prof. Dheeraj Sanghi of IIIT Delhi. (Yes, it’s IIIT Delhi, not IIT Delhi.)

The latest post by Prof. Sanghi is about achieving excellence in Indian universities [^]. He offers valuable insights by taking a specific example, viz., that of the IIIT Delhi. I would like to leave this post for the attention of [who else] the education barons in Pune and the SPPU authorities. [Addendum: Also this post [^] by Prof. Pankaj Jalote, Director of IIIT Delhi.]

Prof. Sanghi’s second (i.e. earlier) post is about the current (dismal) state of the CS education in this country. [^].

As someone who has a direct work-experience in both the IT industry as well as in teaching in mechanical engineering departments in “private” engineering colleges in India, the general impression I seem to have developed seemed to be a bit at odds with what was being reported in this post by Prof. Sanghi (and by his readers, in its comments section). Of course, Prof. Sanghi was restricting himself only to the CS graduates, but still, the comments did hint at the overall trend, too.

So, I began writing a comment at Prof. Sanghi’s blog, but, as usual, my comment soon grew too big. It became big enough that I finally had to convert it into a separate post here. Let me share these thoughts of mine, below.


As compared to the CS graduates in India, and speaking in strictly relative terms, the mechanical engineering students seem to be doing better, much better, as far the actual learning being done over the 4 UG years is concerned. Not just the top 1–2%, but even the top 15–20% of the mechanical engineering students, perhaps even the top quarter, do seem to be doing fairly OK—even if it could be, perhaps, only at a minimally adequate level when compared to the international standards.

… No, even for the top quarter of the total student population (in mechanical engineering, in “private” colleges), their fundamental concepts aren’t always as clear as they need to be. More important, excepting the top (may be) 2–5%, others within the top quarter don’t seem to be learning the art of conceptual analysis of mathematics, as such. They probably would not always be able to figure out the meaning of even a simplest variation on an equation they have already studied.

For instance, even after completing a course (or one-half part of a semester-long course) on vibrations, if they are shown the following equation for the classical transverse waves on a string:

\dfrac{\partial^2 \psi(x,t)}{\partial x^2} + U(x,t) = \dfrac{1}{c^2}\dfrac{\partial^2 \psi(x,t)}{\partial t^2},

most of them wouldn’t be able to tell the physical meaning of the second term on the left hand-side—not even if they are asked to work on it purely at their own convenience, at home, and not on-the-fly and under pressure, say during a job interview or a viva voce examination.

However, change the notation used for second term from U(x,t) to S(x,t) or F(x,t), and then, suddenly, the bulb might flash on, but for only some of the top quarter—not all. … This would be the case, even if in their course on heat transfer, they have been taught the detailed derivation of a somewhat analogous equation: the equation of heat conduction with the most general case, including the possibly non-uniform and unsteady internal heat generation. … I am talking about the top 25% of the graduating mechanical engineers from private engineering colleges in SPPU and University of Mumbai. Which means, after leaving aside a lot of other top people who go to IITs and other reputed colleges like BITS Pilani, COEP, VJTI, etc.

IMO, their professors are more responsible for the lack of developing such skills than are the students themselves. (I was talking of the top quarter of the students.)

Yet, I also think that these students (the top quarter) are at least “passable” as engineers, in some sense of the term, if not better. I mean to say, looking at their seminars (i.e. the independent but guided special studies, mostly on the student-selected topics, for which they have to produce a small report and make a 10–15 minutes’ presentation) and also looking at how they work during their final year projects, sure, they do seem to have picked up some definite competencies in mechanical engineering proper. In their projects, most of the times, these students may only be reproducing some already reported results, or trying out minor variations on existing machine designs, which is what is expected at the UG level in our university system anyway. But still, my point is, they often are seen taking some good efforts in actually fabricating machines on their own, and sometimes they even come up with some good, creative, or cost-effective ideas in their design- or fabrication-activities.

Once again, let me remind you: I was talking about only the top quarter or so of the total students in private colleges (and from mechanical engineering).

The bottom half is overall quite discouraging. The bottom quarter of the degree holders are mostly not even worth giving a post X-standard, 3 year’s diploma certificate. They wouldn’t be able to write even a 5 page report on their own. They wouldn’t be able to even use the routine metrological instruments/gauges right. … Let’s leave them aside for now.

But the top quarter in the mechanical departments certainly seems to be doing relatively better, as compared to the those from the CS departments. … I mean to say: if these CS folks are unable to write on their own even just a linked-list program in C (using pointers and memory allocation on the heap), or if their final-year projects wouldn’t exceed (independently written) 100+ lines of code… Well, what then is left on this side for making comparisons anyway? … Contrast: At COEP, my 3rd year mechanical engineering students were asked to write a total of more than 100 lines of C code, as part of their routine course assignments, during a single semester-long course on FEM.

… Continuing with the mechanical engineering students, why, even in the decidedly average (or below average) colleges in Mumbai and Pune, some kids (admittedly, may be only about 10% or 15% of them) can be found taking some extra efforts to learn some extra skills from the outside of our pathetic university system. Learning CAD/CAM/CAE software by attending private training institutes, has become a pretty wide-spread practice by now.

No, with these courses, they aren’t expected to become FEM/CFD experts, and they don’t. But at least they do learn to push buttons and put mouse-clicks in, say, ProE/SolidWorks or Ansys. They do learn to deal with conversions between different file formats. They do learn that meshes generated even in the best commercial software could sometimes be not of sufficiently high quality, or that importing mesh data into a different analysis program may render the mesh inconsistent and crash the analysis. Sometimes, they even come to master setting the various boundary condition options right—even if only in that particular version of that particular software. However, they wouldn’t be able to use a research level software like OpenFOAM on their own—and, frankly, it is not expected of them, not at their level, anyway.

They sometimes are also seen taking efforts on their own, in finding sponsorships for their BE projects (small-scale or big ones), sometimes even in good research institutions (like BARC). In fact, as far as the top quarter of the BE student projects (in the mechanical departments, in private engineering colleges) go, I often do get the definite sense that any lacunae coming up in these projects are not attributable so much to the students themselves as to the professors who guide these projects. The stories of a professor shooting down a good project idea proposed by a student simply because the professor himself wouldn’t have any clue of what’s going on, are neither unheard of nor entirely without merit.

So, yes, the overall trend even in the mechanical engineering stream is certainly dipping downwards, that’s for sure. Yet, the actual fall—its level—does not seem to be as bad as what is being reported about CS.

My two cents.


Today is India’s National Science Day. Greetings!


Will stay busy in moving and getting settled in the new job. … Don’t look for another post for another couple of weeks. … Take care, and bye for now.

[Finished doing minor editing touches on 28 Feb. 2017, 17:15 hrs.]

Advertisements

See, how hard I am trying to become an Approved (Full) Professor of Mechanical Engineering in SPPU?—4

In this post, I provide my answer to the question which I had raised last time, viz., about the differences between the \Delta, the \text{d}, and the \delta (the first two, of the usual calculus, and the last one, of the calculus of variations).


Some pre-requisite ideas:

A system is some physical object chosen (or isolated) for study. For continua, it is convenient to select a region of space for study, in which case that region of space (holding some physical continuum) may also be regarded as a system. The system boundary is an abstraction.

A state of a system denotes a physically unique and reproducible condition of that system. State properties are the properties or attributes that together uniquely and fully characterize a state of a system, for the chosen purposes. The state is an axiom, and state properties are its corollary.

State properties for continua are typically expressed as functions of space and time. For instance, pressure, temperature, volume, energy, etc. of a fluid are all state properties. Since state properties uniquely define the condition of a system, they represent definite points in an appropriate, abstract, (possibly) higher-dimensional state space. For this reason, state properties are also called point functions.

A process (synonymous to system evolution) is a succession of states. In classical physics, the succession (or progression) is taken to be continuous. In quantum mechanics, there is no notion of a process; see later in this post.

A process is often represented as a path in a state space that connects the two end-points of the staring and ending states. A parametric function defined over the length of a path is called a path function.

A cyclic process is one that has the same start and end points.

During a cyclic process, a state function returns to its initial value. However, a path function does not necessarily return to the same value over every cyclic change—it depends on which particular path is chosen. For instance, if you take a round trip from point A to point B and back, you may spend some amount of money m if you take one route but another amount n if you take another route. In both cases you do return to the same point viz. A, but the amount you spend is different for each route. Your position is a state function, and the amount you spend is a path function.

[I may make the above description a bit more rigorous later on (by consulting a certain book which I don’t have handy right away (and my notes of last year are gone in the HDD crash)).]


The \Delta, the \text{d}, and the \delta:

The \Delta denotes a sufficiently small but finite, and locally existing difference in different parts of a system. Typically, since state properties are defined as (continuous) functions of space and time, what the \Delta represents is a finite change in some state property function that exists across two different but adjacent points in space (or two nearby instants in times), for a given system.

The \Delta is a local quantity, because it is defined and evaluated around a specific point of space and/or time. In other words, an instance of \Delta is evaluated at a fixed x or t. The \Delta x simply denotes a change of position; it may or may not mean a displacement.

The \text{d} (i.e. the infinitesimal) is nothing but the \Delta taken in some appropriate limiting process to the vanishingly small limit.

Since \Delta is locally defined, so is the infinitesimal (i.e. \text{d}).

The \delta of CoV is completely different from the above two concepts.

The \delta is a sufficiently small but global difference between the states (or paths) of two different, abstract, but otherwise identical views of the same physically existing system.

Considering the fact that an abstract view of a system is itself a system, \delta also may be regarded as a difference between two systems.

Though differences in paths are not only possible but also routinely used in CoV, in this post, to keep matters simple, we will mostly consider differences in the states of the two systems.

In CoV, the two states (of the two systems) are so chosen as to satisfy the same Dirichlet (i.e. field) boundary conditions separately in each system.

The state function may be defined over an abstract space. In this post, we shall not pursue this line of thought. Thus, the state function will always be a function of the physical, ambient space (defined in reference to the extensions and locations of concretely existing physical objects).

Since a state of a system of nonzero size can only be defined by specifying its values for all parts of a system (of which it is a state), a difference between states (of the two systems involved in the variation \delta) is necessarily global.

In defining \delta, both the systems are considered only abstractly; it is presumed that at most one of them may correspond to an actual state of a physical system (i.e. a system existing in the physical reality).

The idea of a process, i.e. the very idea of a system evolution, necessarily applies only to a single system.

What the \delta represents is not an evolution because it does not represent a change in a system, in the first place. The variation, to repeat, represents a difference between two systems satisfying the same field boundary conditions. Hence, there is no evolution to speak of. When compressed air is passed into a rubber balloon, its size increases. This change occurs over certain time, and is an instance of an evolution. However, two rubber balloons already inflated to different sizes share no evolutionary relation with each other; there is no common physical process connecting the two; hence no change occurring over time can possibly enter their comparative description.

Thus, the “change” denoted by \delta is incapable of representing a process or a system evolution. In fact, the word “change” itself is something of a misnomer here.

Text-books often stupidly try to capture the aforementioned idea by saying that \delta represents a small and possibly finite change that occurs without any elapse of time. Apart from the mind-numbing idea of a finite change occurring over no time (or equally stupefying ideas which it suggests, viz., a change existing at literally the same instant of time, or, alternatively, a process of change that somehow occurs to a given system but “outside” of any time), what they, in a way, continue to suggest also is the erroneous idea that we are working with only a single, concretely physical system, here.

But that is not the idea behind \delta at all.

To complicate the matters further, no separate symbol is used when the variation \delta is made vanishingly small.

In the primary sense of the term variation (or \delta), the difference it represents is finite in nature. The variation is basically a function of space (and time), and at every value of x (and t), the value of \delta is finite, in the primary sense of the word. Yes, these values can be made vanishingly small, though the idea of the limits applied in this context is different. (Hint: Expand each of the two state functions in a power series and relate each of the corresponding power terms via a separate parameter. Then, put the difference in each parameter through a limiting process to vanish. You may also use the Fourier expansion.))

The difference represented by \delta is between two abstract views of a system. The two systems are related only in an abstract view, i.e., only in (the mathematical) thought. In the CoV, they are supposed as connected, but the connection between them is not concretely physical because there are no two separate physical systems concretely existing, in the first place. Both the systems here are mathematical abstractions—they first have been abstracted away from the real, physical system actually existing out there (of which there is only a single instance).

But, yes, there is a sense in which we can say that \delta does have a physical meaning: it carries the same physical units as for the state functions of the two abstract systems.


An example from biology:

Here is an example of the differences between two different paths (rather than two different states).

Plot the height h(t) of a growing sapling at different times, and connect the dots to yield a continuous graph of the height as a function of time. The difference in the heights of the sapling at two different instants is \Delta h. But if you consider two different saplings planted at the same time, and assuming that they grow to the same final height at the end of some definite time period (just pick some moment where their graphs cross each other), and then, abstractly regarding them as some sort of imaginary plants, if you plot the difference between the two graphs, that is the variation or \delta h(t) in the height-function of either. The variation itself is a function (here of time); it has the units, of course, of m.


Summary:

The \Delta is a local change inside a single system, and \text{d} is its limiting value, whereas the \delta is a difference across two abstract systems differing in their global states (or global paths), and there is no separate symbol to capture this object in the vanishingly small limit.


Exercises:

Consider one period of the function y = A \sin(x), say over the interval [0,2\pi]; A = a is a small, real-valued, constant. Now, set A = 1.1a. Is the change/difference here a \delta or a \Delta? Why or why not?

Now, take the derivative, i.e., y' = A \cos(x), with A = a once again. Is the change/difference here a \delta or a \Delta? Why or why not?

Which one of the above two is a bigger change/difference?

Also consider this angle: Taking the derivative did affect the whole function. If so, why is it that we said that \text{d} was necessarily a local change?


An important and special note:

The above exercises, I am sure, many (though not all) of the Officially Approved Full Professors of Mechanical Engineering at the Savitribai Phule Pune University and COEP would be able to do correctly. But the question I posed last time was: Would it be therefore possible for them to spell out the physical meaning of the variation i.e. \delta? I continue to think not. And, importantly, even among those who do solve the above exercises successfully, they wouldn’t be too sure about their own answers. Upon just a little deeper probing, they would just throw up their hands. [Ditto, for many American physicists.] Even if a conceptual clarity is required in applications.

(I am ever willing and ready to change my mind about it, but doing so would need some actual evidence—just the way my (continuing) position had been derived, in the first place, from actual observations of them.)

The reason I made this special note was because I continue to go jobless, and nearly bank balance-less (and also, nearly cashless). And it all is basically because of folks like these (and the Indians like the SPPU authorities). It is their fault. (And, no, you can’t try to lift what is properly their moral responsibility off their shoulders and then, in fact, go even further, and attempt to place it on mine. Don’t attempt doing that.)


A Song I Like:

[May be I have run this song before. If yes, I will replace it with some other song tomorrow or so. No I had not.]

Hindi: “Thandi hawaa, yeh chaandani suhaani…”
Music and Singer: Kishore Kumar
Lyrics: Majrooh Sultanpuri

[A quick ‘net search on plagiarism tells me that the tune of this song was lifted from Julius La Rosa’s 1955 song “Domani.” I heard that song for the first time only today. I think that the lyrics of the Hindi song are better. As to renditions, I like Kishor Kumar’s version better.]


[Minor editing may be done later on and the typos may be corrected, but the essentials of my positions won’t be. Mostly done right today, i.e., on 06th January, 2017.]

[E&OE]

 

Miscellaneous: my job situation, the Tatas, and taking a break…

The Diwali is here, already!

This year’s Diwali isn’t going great for me. I am still jobless—without reason or rhyme. It is difficult to enjoy Diwali against that backdrop.


As you know, engineering colleges affiliated to the Savitribai Phule Pune University (SPPU for short) have been telling me that my Metallurgy+Mechanical background isn’t acceptable, even though the rules have changed to the contrary, and say that I now qualify (in my interpretation).

Recently I attended an interview, and it seems like I may be able to obtain a clear-cut answer on my eligibility (i.e. the equivalence of Metallurgy and Mechanical) from SPPU.

The thing is, SPPU has been having no Dean for its Engineering faculty for about a year or more by now, because the Maharashtra state government hasn’t so far undertaken the procedure to elect (or select) the next Dean.

This recent interview which I mentioned above, was for a Principal’s post, and I was short-listed. As is the common practice here, the short-listed candidates were all invited at the same time, and thus, I had an opportunity to interact with these other, senior-level professors.

These senior professors (some of them already active as Principals at other colleges) told me that it isn’t just SPPU, but all the universities in Maharashtra. They all are currently having only an in-charge or acting Dean for their engineering faculties, because the procedure to appoint the next set of Deans, which was due to occur this month (October) has once again been postponed by yet another year.

Policy decisions such as the Metallurgy and Mechanical equivalence at SPPU have been pending, they told me, because the acting Dean can easily say that he has no powers to do that. Though the other universities are clear that I would qualify, if a genius running an engineering college under SPPU thinks that I don’t, then the matter normally goes to the Dean. If the Dean is not official, if he is only acting, he doesn’t want to take “risk,” so he takes no decision at all. Not just the equivalence issues, there are certain other policy decisions too, which have been pending, they told me. The in-charge Deans have been processing only the routine work, and not taking any policy decisions. The next set of Deans were expected to get appointed by June 2016, and then, after postponement, by October 2016. (“achhchhe din!”)

Now that the appointments have been officially postponed by one whole year (“achhchhe din,” again!), the colleges themselves have begun going to the universities for obtaining the professor’s approvals, arguing that faculty approvals is a routine matter, and that they cannot properly function without having approved faculty.

Thus, the university (SPPU) has begun appointing panels for faculty interviews. There has been a spate of faculty recruitment ads after the current semester got going (“achhchhe din!”).

The particular interview which I attended, these other candidates informed me, was with a University-appointed panel—i.e., of the kind which allows approvals. (Otherwise, the appointments are made by the affiliating colleges on their own, but only on a temporary, ad-hoc basis, and therefore, for a limited time.)

Please note, all the above is what I gathered from their talk. I do not know what the situation is exactly like. (Comments concerning “achhchhe din!,” however, are strictly mine.)

But yes, it did turn out that the interview panel here was from the university. Being a senior post (Principal), the panel included both the immediately past Dean (Prof. G. K. Kharate) and the new, in-charge Dean (Prof. Dr. Nerkar, of PVG College, Pune).

During my interview, if the manner in which Prof. Kharate (the past Dean) now said things is any indication, it means that I should now qualify even in the SPPU. This would be according to the new GR about which I had written a few months ago, here [^]. Essentially, Prof. Kharate wondered aloud as to why there was any more confusion because the government had already clarified the situation with the new rules.

I took that to mean that I qualify.

Of course, these SPPU geniuses are what they are, and therefore, they—these same two SPPU Deans—could very well say, in future, that I don’t qualify. After all, I didn’t ask them the unambiguous question “With my Metallurgy background, do I qualify for a Mechanical Engineering (full) Professor’s job or not? Yes, or no?;”  and they didn’t then answer in yes or no terms.

Of course, right in the middle of an on-going job interview couldn’t possibly have been the best time and place to get them to positively confirm that I do qualify. (Their informal indications, however, were clearly along the lines that I do qualify.)

Now that the Diwali break has arrived, the colleges are closed, and so, I would be able to approach Prof. Dr. Nerkar (the currently acting/in-charge Dean) only after a week or so. I intend to do that and have him pin down the issue in clear-cut terms.

At the conclusion of my interview, I told the interview committee exactly the same thing which I told you at the beginning of this post, viz., that this Diwali means darkness to me.

But yes, we can hope that Prof. Dr. Nerkar would issue the clarification at least after the Diwali. If not, I intend to approach Prof. Dr. Gade, the Vice-Chancellor of SPPU. … I could easily do that. I am very social, that way.

And, the other reason is, at the university next door—the Shivaji University—they did answer my email asking them to clarify these branch-equivalence issues. The SPPU is the worst university among the three in the Western Maharashtra region (the other two being, the University of Mumbai and the Shivaji University Kolhapur). [I want to teach in Pune only because it’s my home-town, and thus convenient to me and my family, not because SPPU’s standards are high.]

Anyway, I now do have something in hand to show Prof. Dr. Gade when I see him—the letter from the Shivaji University staff. … At the Shivaji University, I didn’t have to go and see anyone in person there—not even the administrative staff let alone the acting Dean or the Vice-Chancellor. The matter got clarified just via a routine email. There is a simple lesson that SPPU may learn from the Shivaji and Mumbai universities, and under Prof. Dr. Gade, I hope they do.

… Of course, I do also hope that I don’t have to see Prof. Dr. Gade (the Vice-Chancellor). I do hope that meeting just Prof. Dr. Nerkar (the in-charge Dean) should be sufficient.

If they refuse me an appointment, I will get even more social than my usual self—I will approach certain eminent retired people from Pune such as Dr. Bhatkar (the founder of C-DAC) or Dr. Mashelkar (the former Director General of CSIR, India).

Here is a hoping that I don’t have to turn into a social butterfly, and that soon after Diwali, the matters would get moving smoothly. Let’s hope so.

And with that hope in my heart, let me wish you all a very happy and prosperous Diwali. … As to me, I will try to make as much good of a bad situation that I can.


Still, I don’t find myself to be too enthusiastic. I don’t feel like doing much anything. [In a way, I feel tired.] Therefore, I am going to take a break from blogging.

I have managed to write something more on the concept of space. I found that I should be able to finish this series now. I had begun it in 2013; see here [^].

Concepts like space and time are very deep matters, and I still have to get enough clarity on a few issues, though all such remaining issues are relatively quite minor. I should be able to get through them in almost no time.

From the new material which I have written recently, I guess it would be enough to write just one or two posts, and then the series would get over. What then will remain would be mostly polemics, and that part can be taken on the fly whenever the need to do so arises.

I may also think of giving some indications on the concept of time, but, as I said, I find myself too lacking in enthusiasm these days. Being jobless—despite having the kind of resume I have—does have a way of generating a certain amount of boredom in you, a certain degree of disintegration at least to your energy and enthusiasm, even if not to your soul.


So, let’s see. Let the Diwali vacations get over, and I should come back and resume my blogging, telling you what all transpired in my meeting/interaction with the in-charge Dean, and the related matters.


Since I am not going to be blogging for some time, let me note a couple of notable things.

One, the US Presidential elections. I am not at all interested in that. So let me leave it aside.

Two, the Tata Sons issue. It does interest me a bit, so let me write down a bit on it.


I was not as surprised as some of the newspaper editorials and columns say they were. The days of JRD are long gone. The Tatas already were a changed company when Cyrus Mistry took over from Ratan Tata.

Once I returned from the USA in 2001, despite my resume, I never got a chance with the new Tatas (either at TRDDC or at TCS). Such a thing would have been unthinkable during JRD’s times. … Even keeping it aside, what all I observed about the Tatas over the past 1.5 decades was enough for me not to be at all surprised by something like the current fiasco.

No, Prof. Pratap Bhanu Mehta, reading things from where I sit, the Tata fiasco doesn’t do any significant harm to the social legitimacy of Capitalism in India. People—common people—have long ago observed and concluded what had to be. If what the common people think were to be caricatured, it would look like the position you ascribe to the “cynics”. But no, IMO, this position isn’t cynical. To carry realistic impressions about hallowed icons is not quite the same as being a cynic.

Yes, as Harsh Goenka astutely pointed out in his comment in today’s ToI, Ratan Tata’s tenure coincided with the semi-liberalization era: 1991–2012. Whenever you come to compare Ratan Tata with Cyrus Mistry, you cannot overlook that broad context.

I have always thought that JRD left too big shoes for any one to fill in. But, with due respect to Ratan Tata, I still would have to say that no one could possibly entertain thinking in similar terms, when it comes to Ratan Tata’s retirement.

Looking at the facts and figures reported this week, I don’t think Mistry was doing a lousy job. Reading through his letter, I in fact marvel at how well he understood his job—and for this reason, I speculate that he must have been doing his job pretty well. …

Realize, the letter was written within a day or two after an unceremonious removal from the top post of a 100+ years old Indian icon, a $100 billion behemoth. Seen against this backdrop, the letter is extraordinarily restrained; it shows an unusual level of maturity. To expect any more “restraint” is to actually confess ignorance of such basic things as human nature and character. (Sadhus, let me remind you, are known to kill each other in their fights at the Kumbh Mela, just for the priority in taking the Shahi Snaan. Keep that in mind the next time you utter something on nobility of character and culture.)

And yes, I also had come to think that the Nano project was doomed—I just didn’t have the sales and profitability figures, which got reported only today. My reasons were simple; they were purely from an ordinary consumer’s point of view. If you are selling the Nano at around Rs. 2.5 lakhs, just think of the alternatives that the consumer has today: you could get a used car in a “good enough” condition, not just Maruti Alto but even a somewhat more used Toyota Innova, at roughly the same price.

Anyway, I don’t understand these corporate matters much, so let me shut up.


But, yes, knowing the house of Tatas and their brand managers, I can predict right away that in the near future, you are going to see the Tatas announce a product like “Tata Quantum Dot,” or “Tata Silicon Dot,” or something like that. … Why do I think so?

I started writing on quantum mechanics, and roughly around the same time, the cable-less Internet, based on the electromagnetic waves (mobile, Wi-Fi) was getting going in India. So, the Tatas came out with the Tata Photon. Yes, “Photon”. The Tata Photon. … It meant nothing more than the usual Internet dongle (2G, and then 3G) that everybody else was already supplying anyway. (And the Tata Photon never worked too well in areas other than in the Mumbai city.)

Then, the USA was abuzz with the catch-words like nano-technology, and the Tata brand managers decided to do something with that name, and thus came the Tata “Nano.” By now, every one knows what it means.

Today, the USA and other countries are abuzz with words like “Quantum Supremacy” and things like that. You can only expect some Tata brand managers to latch on to this buzzword, and launch a product like, say, Tata Quantum Dot or Tata Silicon Dot—or both!

Tata Silicon Dot, I predict, would signal the arrival of the house of Tatas into the business of supplying the sand required for civil engineering construction.

Tata Quantum Dot, on the other hand, would mean that the house of Tatas had taken an entry into the business of plastic dart toys. Or, the business of the “bindi”s that ladies wear. That is what the house of Tatas would mean by the name Tata Quantum Dot.

And here our policy analysts think that something happening to the house of Tatas is going to affect the credibility or social legitimacy of Capitalism itself in India! Oh wow!!

Ummm…. Does any policy research center in India have any data on the proportion of the private business in the overall Indian economy (including both the organized and the unorganized sectors) over the years, say starting from 1930s? Also, the quantum of the government expenditure in the Indian economy, and its proportion in the national GDP over the same period? Would they care to share it, please? Or is it that they don’t have to look at such data for their policy research purposes? … As to me, I have been on the lookout for data like that for quite some time now, but never could see it compiled anywhere. That’s why the request. Please drop me a line if you spot a reliable source.

OK, bye for now.


A Song I Like:

Since I won’t be blogging for a while, let me give away the “other” song right away, I mean the song which had somehow happened to strike me as being similar to the song “too laali hai savere waali”; see the Song I Like section here [^]. This other song is:

(Hindi) “bhigee bhigee raaton mein…”
Music: R. D. Burman
Singers: Kishore Kumar, Lata Mangeshkar
Lyrics: Anand Bakshi

I take the “raaga” of the earlier song (“too laali hai”) as “pahaaDee”—or at least that’s what I got from an Internet search. The “raaga” of the current song (“bhigee…”) isn’t listed at any Web site. Assuming it’s not “pahaaDee” (or a variant on that), the question becomes, why the two songs might have struck at least somewhat similar to me—why, humming one song, I very naturally and casually happened to remember the other song.

It would be interesting to see if Data Science can be used to spot (and quantify) similarities in songs. The traditional music theory puts too much emphasis, IMO, on “raaga” alone. But there can be other bases for similarities, too. The sound patterns of musical pieces, I think, don’t get exhaustively (and at times not even essentially) characterized by the idea of the “raaga” alone. Talking of these two songs in particular, the similarity I caught might have been connected with certain ups and downs in notes with a somehow similarly sounding tempo. The style of the tunes sounds similar. Guess Data Science might be able to shed some light on things like that…. It would be interesting, to look into that, no? That’s what I had thought…

I mean, I had thought. … But then, these days, as I said, I am unable to work on this topic, too…  I just don’t have any enthusiasm left. Honest. I somehow finished this post, only because I won’t be posting for a while…

So, there. Bye for now, take care, and best!


[E&OE]

 

What are the rules for hiring?—2

Last year in August, I had written a post of the title: “What are the rules for hiring?” [^]. In that post, I had pointed out that historically, the University of Pune (now called Savitribai Phule Pune University, or SPPU for short), in fact didn’t have this “Mechanical-vs-Metallurgy `Branch-Jumping’ Issue.” Though I have a BE in Metallurgy, I myself had taken admission, right in COEP, for an ME program in Mechanical Engineering.

In that post, I had also traced in some detail how COEP had thrown obstacles in my path at the time of my admission to the PhD program in Mechanical Engineering. (If you found (or now find) reading through all those details exasperating, then take a moment to realize what it might have been like for me to live through those artificially created struggles.)

Today, in this post, I once again return to the issue of the hiring rules. I want to provide the reader with copies of the relevant official documents, together with some discussion of the issues as well as my comments.


(I) The AICTE Norms:

If you do ‘net searches to find the AICTE norms document which governs the hiring of professors in the engineering colleges in this country, then you will find many documents floated by different colleges or universities. Most of the matter in such documents are similar to the actual AICTE document, though there often are some small and subtle differences. I don’t mind if different colleges/universities wish to follow policies that are at a slight variance from the norms issued by the AICTE. After all, these are norms, not hard-and-fast rules. To me, trouble begins only when they don’t explicitly note the points of departure. Go ahead, do ‘net searches, and you will find that not a single one of these unofficial documents has bothered to explicitly identify the changes they made from the original AICTE document.

For my purposes, I was looking for the original and authentic AICTE document. I found it faithfully uploaded at SPPU’s Web site, here [^]. Since the college/university Web sites sometimes fail to maintain all the documents or links in order, I have decided to keep a copy of this same document also on my Google Drive, here [^].

See Serial Number 3 on page 2 for Professor’s position in this document. It states:

“Ph.D  degree  with  first  class  degree  at  Bachelor’s  or  Master’s  level  in  the appropriate  branch  of  Engineering  /  Technology  with  10  years  experience in Teaching / Industry / Research out of which 5 years must be at the level of  Assistant  Professor  and  /  or  equivalent.”

True to the khaki register-style dumbness (or the (Marathi) “khaa kee!” type of “smart”ness), this wording is vague on multiple counts. (If there is someone intending to get bribes, let me state it, publicly, that I am refusing to give them any.)

You can interpret this wording in several different ways. The different interpretations can be had by mentally inserting braces “{}” to isolate the different blocks of the text together, and then working out whether these blocks of text apply multiplicatively (as in the Cartesian product) or not.

The two relevant and entirely different ways in which the wording can be interpreted is this:

Interpretation 1.0:

This interpretation says that: you should have a PhD degree in the appropriate branch + you should have a first class either at bachelor’s level or at the master’s level, but both the bachelor’s and the master’s degrees must have come only in the appropriate branch.

According to this interpretation, you are allowed to be dumb (you have to somehow manage a first class only once), so long as you have been conforming to the same branch throughout your life.

With this interpretation, the following issue arises: What does constitute an appropriate branch?

1.1 One sub-interpretation is: Only the Mechanical branch is the appropriate branch for the position of Professor of Mechanical Engineering.

1.2 The other sub-interpretation is: You may have the Mechanical branch either at the bachelor’s or the master’s level (just the way you can have a first class either at bachelor’s or master’s level) but not necessarily at both.

Since I didn’t have a Mechanical degree at either bachelor’s or master’s level, I couldn’t qualify, according to this interpretation 1.0 (whether you follow 1.1 or 1.2).

Interpretation 2.0:

This interpretation says that: You should have a PhD degree in the appropriate branch + you should have a first class either at bachelor’s level or at the master’s level, and further, that either bachelor’s or master’s degrees should have come from an appropriate branch.

Once again, you have to decide what constitutes an appropriate branch.

2.1 One sub-interpretation is: Only the Mechanical branch is the appropriate branch for a position of Professor of Mechanical Engineering.

2.1 The other sub-interpretation is: There can be choices for the appropriate branch at any of the degrees. For instance, to become a Professor of Mechanical Engineering, all the following are OK:
BE (Mech) + ME (Mech) + PhD (Met.)
BE (Mech) + ME (Prod) + PhD (Prod)
BE (Prod) + ME (Prod) + PhD (Prod)
BE (Met) + MTech (Met) + PhD (Mech)—my combination
BE (Aero) + ME (Met) + PhD (Met.)
Etc.

This was my interpretation. It makes sense, because: (i) the wording is: “Bachelor’s or Master’s level in the appropriate branch,” and (ii) the word used is: “the appropriate branch,” not “the same branch.”

The Malady: The interpretation 1.0 was what was adopted by the former Dean of Faculty of Engineering at SPPU, i.e., Dr. G. K. Kharate.

I, on the other had, had always argued in favor of the Interpretation 2.2. The Dean had snobbishly and condescendingly told me that it was not a valid interpretation. When I had pointed out that all reputed universities and institutes abroad and in India do follow the more abstract interpretation (2.2), e.g. IISc and IITs do that, he had asked me to go join an IIT, then! I was quick to point out that I had exceeded their maximum age limit. Regardless of the quality of the argument, he had taken an umbrage at the quickness of my answer—he didn’t say anything but froze icily, and then just looked at me menacingly.

End of (this part of the) story.


(II) The Mumbai University Norms (2012):

The Mumbai University historically had always followed the interpretation 2.2, and never had major issues.

However, in view of the tightening of the government controls, they had held detailed discussions, and then had arrived at an explicit document that clearly states what all constitute the appropriate branches. They published this decision via a document called “Circular No. CONCOL/ICC/04/ of 2012”. I once again link to a copy that I have stored on my Google Drive, here [^].

See page 2 of this document, for the statement qualifications for an Assistant Professor:

“BE/ B Tech and ME /M Tech in relevant subject with First Class or equivalent either in BE / B Tech or ME / M Tech OR ME/M TECH in relevant Subject with First Class”

See page 3 of the same document for additional qualifications for an Associate Professor:

“Qualification as above that is for the post of Assistant Professor, as applicable and PHD or equivalent, in appropriate Discipline”

On the same page, certain additional qualifications expected for a Professor’s position are noted.

See page 9, Serial No. 2 of this document. For a position of Professor in Mechanical Engineering, Metallurgy is included as an equivalent/relevant/appropriate branch, even though only at the master’s level.

However, the drafting is extraordinarily clear here—there are two “or”s—one in the lowercase letters, and another in the capitals. The existence of the capital “OR” makes it abundantly clear that having only a master’s in a relevant subject with First Class is good enough. [Little wonder that the University of Mumbai always cuts ahead of the SPPU on rankings.]

As such, Interpretation 2.2 applies, and I qualify.

I anyway met with their Dean, had it clarified that I indeed do qualify, and eventually, was offered jobs as a Professor of Mechanical Engineering. See my resume regarding these jobs. (The particular link to my resume may change as I update the resume, but it is always accessible from the home page of my personal Web site [^].)

But then, of course, the University of Pune (now SPPU) believes that they are the best and the most conscientious (or least licentious) in the world. So, they were never going to be taken in by the mere fact that the University next door (one which has always been ranked higher by every agency in the world) did easily allow me to function as an employed Professor of Mechanical Engineering. (I anyway do function as a professor of engineering. The only question is: whether they allow me to get employed as one, or not. The lower-ranked SPPU’s geniuses don’t.)


III The Maharashtra State GR (May 2014):

Sorry, on two counts: (i) I cannot give you a direct link to this document at the Web sites of the Maharashtra State Government. I found this document at the Recruitments section of COEP’s Web site, in June 2015, but the document is no longer to be found even at the COEP Web site. (ii) The document is in Marathi, so, my English readers would have to trust me when it comes to the titles of the columns of the relevant table.

Though the GR had come in effect in May 2014, I came to know of it only in June of 2015. The utmost benevolent Mechanical Engineering Professors (and the authorities) at SPPU are still napping dozing off, still getting annoyed when I mention the GR, and still asking me for a copy of this document (with a “knowing” certainty that they would be able to disqualify me in reference even to this GR).

I have once again uploaded my copy of the document to Google Drive, here [^].

Refer to page 13, Serial Number 2. (Fortunately, the Arabic numerals in English and in Marathi are quite similar, because the so-called Arabic numerals had originated in India anyway.)

At the master’s level, the GR expands on even the Mumbai Universities’ list of the equivalent/relevant/appropriate branches (though it cuts down on the Aerospace engineering at the bachelor’s level).

Showing this document, my last employers did offer me a position of Professor in Mechanical Engineering. (No, they didn’t give me the UGC scale. But they did offer me a full Professor’s position—and later on, treated me with full organizational respect that goes with a full Professor’s position.) I even uploaded the internal marks to SPPU’s BCUD Web site, using my own official account.)

Even then, even this year, the Mechanical Engineering geniuses and other employers at the utmost conscientious SPPU are still telling me that I don’t qualify.

As to my last employers, though their college is in Pune and is affiliated to SPPU, their headquarters are in Nagpur, not in Pune. But then, my point is, you don’t have to go so far away as to Nagpur. Go just 75 kms from this filthy place, and as soon as you climb down the Khandala ghat (and with that, also shed your obnoxious conformism of a mindless sort), and you reach a better place.


The Rules for the Maharashtra State Government’s Autonomous Institutes (November, 2014):

These are the latest rules. They apply only to the State Goverment’s Autonomous Institutes—not to the engineering colleges affiliated to SPPU.

But bear in mind that in the view of the State Government (and most every one else), these Autonomous Institutes are supposed to be in the leadership positions; they are supposed to be guide-lamps to the other colleges. It is in this context that their rules become relevant.

I found the document at COEP’s Web site, this year, here [^]. Once again, I have uploaded a copy at my Google Drive, here [^].

See page 3, Paragraph Serial Number 3.2. It says:

“PROFESSOR: Essential: (i)  Ph.D.  Degree  or  equivalent  in  the  concerned  discipline  from  a reputed  institution, preceded  by a UG/PG  Degree in the  relevant  discipline in First Class (or equivalent) with consistently good academic record; ” etc.

Much better (though not as good as the University of Mumbai’s).

Note that the PhD ought to come in the concerned discipline, whereas either the UG or the PG degree should have come from a relevant discipline.

This document thus settles the issue that the Interpretations 1.1 and 2.1 are NOT valid; only the Interpretations 1.2 and 2.2 can be. However, unlike the broadest interpretation in 2.2, here, the requirements are a bit restrictive: your PhD must be in the concerned discipline.

Thus, for the position of Professor in Mechanical Engineering, the following combination is allowed:

BE (Met) + M Tech (Met) + PhD (Mech).

On the other hand, as far as I can make it out (and I can be wrong here), both of the following come in doubt:

BE (Mech) + M Tech (Mech) + PhD (Aero)
BE (Mech) + M Tech (Mech) + PhD (Met)

Looks like they should hire people with better drafting abilities at both COEP as well as in the DTE—and most certainly, and first and foremost, at the AICTE. (Yeah, right. Keep hoping. (AICTE sits in New Delhi.))


I assert that the University of Mumbai’s draft is the best (among those considered above). If you differ, drop me a line.


For obvious reasons, for this post, there won’t be the usual section on a song I like.


I may come back and edit this post, but only for correcting typos/links, or to streamline the write-up.

Since the issues are both legal and important, I may also come back to edit this post any time in a distant future. If so, I will note those (more serious) updates explicitly. (In contrast, the immediate updates merely for streamlining and all, will not be noted explicitly.)


Update 1 on 2016.06.21: Added the detailed rules for Assistant and Associate Professor’s positions at the University of Mumbai. [The link to original document was given even earlier, but now the text of the main post also quotes the detailed requirements.]


[E&OE]

Why I won’t be writing for a while…

Why I these days can’t find the time to write blog posts:

As you know, I have joined a private engineering college as a professor (though it’s a temporary appointment). I have a lot of work-load. While in the interview I had insisted on a work load of 8 hours + ME projects from the computational mechanics field, this is what I have been asked to carry out, after joining:

  1. A course on Thermodynamics (the first course on the subject) to SE (Mech.) students (4 hrs/week)
  2. An elective course on Operations Research to final year BE (Mech.) students (4 hrs/week)
  3. Guidance of three project groups (of 4 students each, i.e. 12 students in all) of final year BE (Mech.) program (technically, “only” 2 hours/group/week)
  4. A course on Advanced Thermodynamics and Combustion Technology to first year ME (Mech.) students (3 hrs/week)

Furthermore, for the first three items (and probably also for the fourth), I basically have been asked to fill in for an associate professor who quit the college (he said “for better prospects” during our brief interaction), mid-term.

Jumping in after someone has taught half-way through (more or less exactly half-way through) a course is always difficult, and it has especially been difficult for me, for two–three reasons: (i) The management and the students expect you to continue at the same pace even if you have had no time to mentally prepare for a course in advance. Even in the private engineering colleges, people typically do get to know what course they will be teaching the next semester some two-three weeks in advance, and that’s the minimum time period for the teacher to get into the right mental frame. But, in an on-going semester, three weeks means about 1/4th of the entire semester’s portion. (ii) Since a course usually builds on the material covered earlier, students expect you to know the answers, and, in the live class, while you do have a vague feel, since you haven’t had a chance to review the contextual material, you either make mistakes or at best end up only hand-waving. (iii) I haven’t taught thermodynamics before. In my last job, I had filled in someone else for this course during a re-org, but that my effort back then too was not fully satisfactory even to me, let alone to students. And, even back then, I hadn’t had a chance to review all the material well. The quick mental recall of formulae and all (so prized by students in any country, and also by professors when it comes to India) isn’t there. It takes time. Not years, not months, but at least a few weeks. Which you don’t get when you are asked to jump in. (Unless you have been one of those deadwood professors who have nothing in life except for “teaching” (i.e. not even innovative student projects let alone research, but just “teaching” by the heart, and only for learning by mugging up)—the category so highly prized by the Indian education system.)

From my last job, I know that if I am going to teach a course for the first time in my life, I need about 3 hours of preparation per hour of the actual lecture delivery. That is, about 4 hours in all. By that reckoning, I am already doing: (4 X 11) + (2 X3) = 52 hours per week.

Even if I cut down on preparation, it would still be about (3 X 11) + (2 X 3) = 39 hours.

And then, there are administrative things like meetings (3 hours at the college level which I must attend because I am a “senior” professor and a PhD holder), 1 hour at the departmental level, and 1–2 hours for my faculty groups (I am a mentor to 4 junior faculty)). And, I haven’t counted in the time spent on grading in-semester examination papers for the three courses.

On top of that, many topics of both Operations Research and the ME course on Thermodynamics are completely new to me. (About 60% part, and about 30–35% part, respectively.)

Clearly, I am putting in way beyond the norm of 40 hrs/week. In fact, about 58–45 hours, it is, at the minimum. The calculation is right. Mid last week, I had to take an extra half tablet for angina, because I was getting up at 4:00 AM for teaching two consecutive classes of two different courses both of which were new to me.

I therefore don’t have any time left for blogging.

The situation is going to continue for quite some time. Mid-October for UG and Mid-November for PG is the time to which the current semesters respectively run.

On the other hand, the ME course on CFD (though compulsory for the ME (Heat Power) program) has not been given to me. “Orders from the top” is the only reason I have been made aware of, in this connection.

The faculty member who left (and thus created a vacant slot leading to my hiring) was an Associate Professor (yes, he too had a PhD; he was about 35 years old). Here as an Associate Professor, he was making the same amount of money which I was making at my previous job in Mumbai as a Professor (at my 50+ age). However, now, for filling in his shoes in the middle of the term, they offered me 15% less salary. This offer they accommodated by not adopting the UGC scale in my case. (That was because, they bluntly asserted, I wouldn’t be approved for a Professor’s position at the Savitribai Phule University of Pune because I don’t have the required experience. It also is conceivable that they thought that the empty shoes left behind might be too big for me to fill in.)

I was given a choice: accepting the UGC scale as an Associate Professor, or choose the same Rupee payment as a gross/lump-sum salary but with a Professor’s title. I chose the latter. Reason? so that at the time of any future University approvals for a Professor’s position, I would not have to explain a discontinuity in the title of the full Professorship.

Why did I do that? Accept this offer?

Two reasons: (i) This way, I had hoped, I would get to teach CFD right in Pune. Teaching CFD would be in line with my research interests, and being in Pune would be convenient to both me and my father. (ii) I knew that professors of the Savitribai Phule University of Pune (and also their “management”s) are quite well organized a lot. With the “shikshaNa shulka samitee” i.e. the professional body deciding the fees for the private engineering colleges choosing be its members, almost each private engineering college knows everything that goes on in the other private engineering college. I therefore was sure that now that this offer was actually made by this college, not a single other college would ever make any better offer to me. As it turned out, no one made any other offer at all—better, or worse. (The Executive Director of the Trust of a better reputed college in Pune happens to be a past student of a friend of mine, and the former still respectfully returns every call the latter makes to him. I had approached the Director through this friend of mine. While my friend was honestly hopeful that I will get a good opportunity there, even though this friend is a man of the world, I still thought nothing of the kind is going to happen, once I received this offer. Turns out that I knew better. (Yes, sometimes it is a hassle in life to even know better!)

So, I accepted it. This offer.

(Dear CapMag.com and Objectivist sites, yes, the period spanning the last week of August and the first week of September is coming to an end; so kindly run a few articles highlighting the employer’s rights. You too, dear Hoover. Very, very capitalistic and/or Republicans, it would be. As to the Democrats: raise the questions as to why a woman candidate was not given a chance in my place.)

Anyway, while the payment issue can be kept as an aside (in private colleges, they do have the flexibility to offset such issues later on (I told you I know better)) what bothers me is this part: Going by the absence of any comments on the interviewers’ part during the interview, I assumed that they would give me only two courses. But they still passed on three courses to me.

Similarly, I also truly believed that I would get to teach CFD. (Unlike Mumbai university, in Pune, final year BE students don’t get to learn FEM.) But here they instead gave me Advanced Thermodynamics and Combustion Technology. The combustion technology is the latter is the part I’ve never studied, though I know its importance through my six months’ stint in Thermax (and which experience the UGC and the Savitribai Phule University of Pune anyway don’t formally count in, because I have lost the experience certificate for that job). The topic is simple, but remember the Indian requirement: being able to rattle off an answer on the fly and instantaneously—whether accompanied by understanding or not.

Similarly, I also truly believed that I would get ME students to guide. But I didn’t get any. On this count, their reasoning seems right: there are only 4–5 students in two ME programs put together.

I also truly believed that when a couple of distinction class final year undergraduate students came to me, and were enthusiastic about doing a CFD project under me, the required project group reshuffling would be possible. (Their entire group of four soon became eager to join me.) However, the students’ request was declined out of the apprehension that it would lead to “system collapse”: every one would want to work with someone else, it was feared.

BTW, this was the same idea which I have been having from 2010 or so. In 2013, I was going to use it for an ME level project at YTIET Karjat, and so had submitted the abstracts for two papers in an international conference in July 2013. Both abstracts were accepted and the full-length papers were in preparation. I had to soon later (in August 2013) withdraw the papers’ proposal because I had in the meanwhile lost that job. As to the current job: Despite two months, not a single student had yet submitted a single project proposal. So, it wouldn’t have been the case of my jumping in, in the middle of an on-going project. The project would have started from the scratch anyway. But then, the apprehension that the system would collapse could faithfully be applied in this case, but not in the case of asking me teach subjects that are new to me, in the middle of a semester, after half the portion had already been covered by someone else.

So, you can see that things don’t always go the way I truly believe they would. I, too, don’t always know better!

(Even though, almost predictably, students supposedly have already begun giving a good feed-back about my teaching, in comparative terms, that is. When a professor remarked this part in an informal chat, I actually was blank: emotionally, as well as cognitively. I was too worried about ending that chat in a polite way as soon as possible, so that I could continue taking out notes for my upcoming class.)

Anyway, that’s how I don’t have any time in hand for blogging.

Further, until III week of September, all our weekly offs have been suspended (compensatory offs will be given later) because of some definitely valid reason (accreditation-related documentation work). That’s yet another reason… (To my mind, the only valid reason by which an extra load can be justified. But then, as I said, it comes on the top of the above mentioned 58–45 hours/week, and so, I really can’t care for the justifiability of this further additional component.)


An idea for a brief paper:

The silver lining is this. I (after two weeks) have (barely) begun somewhat enjoying teaching Operations Research (OR). It’s not exactly my field, but at the BE level, the subject seems to be such that even as the models are somewhat simpler to deal with, they also have enough potency by way of supplying some food for thought. Possibly, also some new research paper ideas.

For instance, while commuting by bus (it’s a 25 kms one-way commute for me; 1 hour to, and 1.5 hour fro due to the heavy evening traffic) I stumbled on an idea related to the topic of Queuing Theory—an OR topic which I am currently teaching. I had never studied (or even run into) this topic before, and so, while it added to my harder work, I still have managed to find this topic to be a bit of a fun.

And, I could still stumble on an idea of building some toy computer models about it. … It’s just that I am weak in mathematics and so, I have to study harder. Which means, I have to work on this idea later, after this semester gets over. 

… In the meanwhile, if you can’t suppress your curiosity, here is the idea: Hopefully, you know that the normal distribution is a limiting case of the binomial distribution. Hopefully, you therefore know that Galton’s board can provide a neat toy model to introduce the normal distribution. Hopefully, you also know that the Poisson distribution is sort of derived from the binomial distribution.

The idea is to build a similar sort of a suitable toy model (either physical or, better still, in software) for the Poisson distribution. And, to prove the convergence from that toy model to the Poisson distribution.

So, in short, the idea we are looking for is this:

Galton’s Board : Normal distribution ::  ? : Poisson distribution.

And, to supply a neat (fairly rigorous) mathematical proof.

I tried to find such a model via 3–4 quick Google searches, but failed to find any. There are any number of texts and papers connecting networks and the Poisson distribution. But what they always discuss is the use of Poisson statistics in network models—but not a finite network/graph/similar model leading to the Poisson distribution (in appropriate limits). The “Galton board” is missing when it comes to the Poisson distribution, to speak loosely.

Spoiler Alert: Here’s a hint—a very loud hint IMO. So, skip the next line appearing in the very fine print if you want to work on it yourself. (Further, the topic also is out of the syllabus of the Savitribai Phule University of Pune, and of every university syllabus that I came across during my searches on this topic—that’s why I believe this can be a good topic for a brief research paper):

The detection times of photons, and the arrival times of taxi-cabs at an arbitrary square in a city.

No, the hint may not be sufficient to you. But then, I do intend to write a paper on this topic, or at least: search better, using Scopus and other indexing services, during my next visit to IIT Bombay, and then, if the suitable paper has not yet been written, to write it.


Am too busy to be in the right frame of the mind even to just listen to music, so let me skip the usual “A Song I Like” section….


 

The noise pollution and the government-running people’s explicit, loud and strong support thereof:

However, of course, with the upcoming “GaNapati” festival and all, you know that I will have to listen to at least 10 hours of very loud “music” every day, in blatant and rampant violation of my relevant rights as an Indian citizen.

What you might not know is that both the parties in the ruling coalition in Maharashtra, viz., the BJP (the state education minister Mr. Vinod Tawade) and Shiv Sena (the party chief Mr. Uddhav Thaakare) have openly and strongly declared that if festivals (“utsav” was the term they both used) cannot be celebrated by “getting on the road,” what’s the point?

Yes, that is the point they had, concerning this issue. These are the people who are running this government. (And, government, you know, associates to “gun.”)

Another point you would not know is that every year, about 2–3 police officers on the “bandobast” duty in Pune (alone), and also about 2–3 senior citizens in Pune (alone), die because of the noise pollution (alone). Yes, police constables and even officers have suffered cardiac arrest and collapsed on the spot, after 20 hours of continuous policing in front of the loud-speakers walls that are erected in violation of the Supreme Court of the land.

There is no Kasab involved here, and I am certain that the honorable politicians must be looking at some … greater… social cultural… good, …. what do you say?

The solution usually discussed is, what else, “yoga.” (Which word is pronounced (by the proposers) as “yogaa”).) “Yoga” classes for the police, to combat their job-related stress. And also for the rest of us.

The Times of India, the Indian Express, the Marathi-language newspapers, and the TV media in general, have not isolated this above-mentioned bit. They do report such news, but only in a piecemeal manner, i.e. as the death events separately occur over some 12.75 day festival—i.e. the 11 days from the Chaturthee to Chaturdashi, both inclusive, and an additional day or two days for the final day “festivities” that, because it’s “utsav,” must run into the “pitru pandharwaDaa”—after it involves sending off the “baapaa” doesn’t it?.

Thus the media people tend to report the “incidents” as un-correlated occurrences.

(Marathi) “gaalboT” is the most they (and the politicians) are ever willing to ascribe to such incidents—incidents in which people die out of noise pollution. [“gaalboT” is the black mark mothers apply on the cheek of their infants. The idea is that the presence of a black mark distorts the beauty of the infant, and thus, by pre-satisfying an evil onlooker’s desire to destroy the beauty, it preempts the evil’s power, and so, the child remains safe. Yes, the “susanskruit” puNeri applies the term to incidents of deaths by noise pollution—after all, it’s a Hindu festival and not a Quranic prayer coming on a loudspeaker from a mosque, right? So, it has to be just a “gaalboT.”

As to me, loudspeakers should be banned for not only “gaNapati” “music,” but also the mosque prayers, the “jai bhim”/“aNNasaaheb saaThe” “festivities”, the loud crackers cracked in the middle of the night for a random marwaari/Punjabi marriage, and every other “religiosity” or “festivity” of every kind. Men may observe their religious rituals or practices, but only without affecting others’ objective rights. Sound is not a laser light; it travels also to unintended locations, and with these loud speaker walls, it travels well over half a kilometer radius to acutely disturbing levels.

But coming back to the “puNeri” culture in particular, none has bothered to study or even think of the loss of time and the non-fatal health injuries, so such things don’t at all get reported.

However, to be fair, the media have, at times, shown the due sensitivity to run news articles about the ill-effects that the loud crackers have on pets such as dogs. Such articles usually make it to the print at the time of “Diwaali,” near the end of that season: both the “Ganapati” and “Navaratri” festivals are, by then, fully over, of course. Also the “laxmi pujan.” (Each festival has, by then, been covered highlighting the due presence of foreigners, especially the white-skinned ones. Apparently, these white people come to India at the time of the Pandharpur “waari” and then they stay put until “Diwaali”. And then, almost as if on a cue, these visiting whites suddenly disappear as the Christmas approaches. At Christmas proper, only the white people working in the Pune IT industry (“expats”) get coverage, apart from the Indian-born native Christians. But not those aforementioned visiting white. At least not in Pune. … I suspect that it’s then time to shift the focus towards the Goa beaches…. But I digress…

And, I also write too long posts…

OK, some time later (after a month or so).

[If I at all find time, I may streamline a few places in this post, but I can tell you that it won’t be more than a 10 minutes’ editing. So, this post isn’t going to change a lot from its present shape. Take it or leave it. But no, I really won’t be able to come back to write blog posts on the topics such as what I mentioned the last time or so. So, bye for now, and for quite a few weeks.]

[E&OE]

 

What are the rules for hiring?

There is a matter of a suspense which should break by the time I come back for my next post. Here is the story. (Narrated, as usual, tortuously and at a length. (Don’t read if such posts turn you off.))

The mechanical engineering professors in the Savitribai Phule University of Pune, as you know, have been pitted against hiring of people with a background like mine: BE and MTech in Metallurgy; PhD in Mechanical. “You must have had at least one of the pre-PhD degrees in mechanical, why didn’t you?” they have been respectively saying and asking (in a probing manner).

Most people occupying the working of the faculty of engineering in this university these days, in fact have come not from the University of Pune (or the University of Poona) itself; they have come from other universities. Typically, they have come from Aurangabad, Amaravati, and Walchand—but not from IITs or IISc or the better ranked universities in the UK/USA.

In my experience (i.e. with the exception of the late Prof. Dr. S. R. Kajale, who did have has UG degree from Amaravati), all of them carry faulty notions about the traditions at this university. In the Pune (or Poona) University, these professors have tried to explain to me, in a tone consisting of a feeling of an utmost certainty as arising from a superior educational experience, the ordinary exasperation arising after not being understood, an abstract projection of an abstract feeling for the acute concerns of the jobless-ness of the person sitting across the table, as well as, all in all, a very definite sense of their own unquestionably high moral and intellectual superiority, that there always has been this policy. [They have never felt it necessary to enjoin in their comment their own experiences or knowledge of their undergraduate universities/colleges. They were in the University of Pune, they knew what they were talking about, the matter ended there, as far they were concerned.]

Wrong. Factually wrong.

The other universities might have historically had this problem, but not the University of Pune (i.e., barring a few well-known personality-related issues concerning the Mechanical and Metallurgy Departments at COEP—the only engineering college this university had, for a long time).

IIT Bombay (with a heavy institutional-cultural influence of the Russians that lasted for too long a time) also have had this problem (concerning branch-“jumping”) but rather in an off and on manner; the University of Mumbai, to my knowledge, never (not at least concerning the specific branches of Metallurgy and Mechanical).

IIT Bombay did have this problem in the mid-1970s; they were against this particular branch jumping (even while promoting their interdisciplinary research centers). Then, during the mid-1980s, they didn’t have this problem. (I could have got an MTech in Mechanical Engineering at IIT Bombay (I had enough of a GATE score to be competitive back then); it’s just that I chose not to pursue anything at this IIT—this IIT was too strong on hype and too low on the academic freedom to the student concerning mixing courses from different departments.) Then, over a period of time, by the time I was applying for PhD admissions during the early naughties, IIT Bombay had once again gone back to having a problem about branch-“jumping”. I don’t know which way blows the wind of their whims, as of today.

So, historically, other universities might have had problems with “branch-jumping,” but not so, for a long time, the University of Poona/Pune. Certainly not before the people from Amaravati, Aurangabad, Shivaji etc. began rushing in to fill the ranks of professorships, in this university. (Surprisingly, the University of Mumbai carried on their more liberal policies concerning the metallurgy and mechanical branches, despite a similar trend of demographics occurring also at its affiliating colleges; I don’t know the reason why. It’s possible that they, too, weren’t being too liberal; it was just that they didn’t have a separate branch of Metallurgy, and so, the issue of the turf-battles and the academic self-inflations of the Mechanical departments, never arose.)

In contrast, COEP and University of Poona actually had no issue admitting BE Metallurgy graduates to the ME Mechanical program—the only requirement was a first class at BE Metallurgy. (And, a higher second, if the BE was in Mechanical itself. Also, vice-versa: For ME in Metallurgy, a first class would be required from the BE Mechanical graduates, and a higher-second from BE Metallurgy graduates.)

How do I know? Because I myself had taken admission to ME Mechanical program at COEP once, back in 1989/1990 (I have forgotten precisely when). Having decided to pursue computational mechanics, I had taken admission to ME Mechanical at COEP, just as a fall-back option to my US applications, back then, I think. And, yes, even back then, I was interested only in computational mechanics. I had just an interest, no real idea of what all this sub-field involves. I in fact didn’t even know programming at that time. But, by that time, I had already spent 1.5 years on the IIT Madras campus, gotten some idea about FEM and computational modeling, and after spending some time in industry now had come to realize that computational mechanics was the field of my life’s calling. That’s how, I had taken an admission in the Mechanical department.

Actually, I had forgotten about it—I mean this admission of mine. I was reminded of it when, starting mid-2002, I tried to get admission at COEP, now for a PhD in Mechanical (with a thesis in computational mechanics, on a topic of my choice).

By the time it was April 2003, after having going through 12+ guides (all of who declined to be my official guide), and after having been declined by IIT Bombay (for branch-jumping issue), I finally was accepted by a professor at COEP. And then, the then director of COEP, Ashok Ghatol, kept my application in abeyance for more than six months.

During this time, one day in mid-2003—mid-2004, I received a letter from the COEP library threatening me with a legal action. The letter said that if I didn’t return the books I had borrowed, I would face action by the police. Yes, police, it had explicitly mentioned. The letter was delivered not by ordinary post (the way such letters usually are), and in fact not even by registered post (with the acknowledgment-due slip), but, as far as I remember it, by SpeedPost. Further, it noted that until the matter was legally resolved, I would be barred from many things such as: issuance of any certificate from COEP, applying for a job at COEP, and applying for admission for any further studies at COEP.

I first went through the collection of my books to locate this book, but couldn’t find it. (I in fact didn’t even recognize the book by its title, back then.) Until 1990 (when I went to the USA, and so, some of my habits here broke away), I would keep an excellent record for all the books I had. The book mentioned in the letter was not there in this list. (I would maintain this list in an old 80-page notebook, not in a PC database.) So, I visited the COEP library to figure out the issue. After some four/five visits to the administration building and the library on some six/seven separate days, I finally gathered that the book was supposedly issued to me not when I was a BE student, but when I was an ME student there!

Oh yes! Then the bulb lit up!! I was once a student of ME (Mechanical), at COEP! I had never attended a single class, but I had officially registered for the program, anyway.

Ashok Ghatol, the Director of COEP in 2003–04, it would seem, was being very conscientious. How else could the administration of my alma mater wake up about this library book only now—after a few months after my acceptance by a PhD guide? After all, as far as this library book went, they had never sent a single letter any single time over the earlier 12+ years. But, looking at my PhD application with this guide, they did somehow think of it. Conscientious, nay, very, very conscientious, COEP had turned, in the decade+ time that had elapsed when I was a student here last (in 1989/90).

As would be very easy for anyone to predict, it turned out that the record of the books borrowed by me were, indeed, very meticulously kept also in the COEP library. However, the signature for the last entry on my reader’s card—the entry for the un-returned book—was not mine. It did look somewhat like mine, but it wasn’t actually mine. At least I had a hard time identifying it as my signature. I could convince the library folks about my doubt, but only after not only repeatedly signing in their presence but also bringing and showing my passport to them. Finally, they yielded, and acknowledged the possibility of the existence of a doubt.

But what/who was the source of this extra line? I don’t know. I still don’t. But no, I didn’t even think of accusing the COEP folks with any malpractice. A far more likely possibility here was that some other student (say one of my co-students at ME, or, friends in the Metallurgy department, or a student whose ME project I had informally guided in the late 80s—he had won a University Gold Medal for that project) might have borrowed my library card, and might have used it to borrow a book for their use. (This used to be a common practice at COEP. The number of books to refer could easily exceed the number of books allowed. So, people would freely use each other’s cards, often without knowledge of which book had been checked out on one’s name.) And then, probably, he had forgotten to return the book. Possible. And, of course, there could be other possibilities, too; I don’t know. (The book was not on a topic of one of my own interests back then—viz. computational mechanics.)

Anyway, even as I became very well aware of Ghatol’s utmost conscientiousness by this time, I also, by this time, was a sufficiently grown up educated Indian to be well aware of the way that Indian governments work. I would be asked to pay a fine, I was sure. And the fine, I was sure, would be within a few hundred rupees. It would have to be only a fine, not a book-replacement. Two reasons: (i) There would no possibility of book-replacement for the COEP library. The missing book, I think, was an old one, and so the possibility of finding a replacement was remote. Further, this being a government college, a policy of book-replacement would, in principle, go against the policy of procurement of any of the library holdings only in the bulk and only by the college itself, not by a student, and only from one of the approved list of book vendors. (ii) The rules for the fine would refer only to the original cost, not to the current market price, or the price arrived at after accounting for inflation. The settlement of issues via the latter route would not only violate the principle behind the procurement policy, but it would also require making a reference to the State Accounting and Finance Department in Mumbai, and there in fact would be no precedent or a policy on how to make this reference—none would even know what category the outward register’s entry should note.

I didn’t divulge the above two reasons to the COEP staff; I merely let them decide. Of course, it took a few visits to the COEP library and the main administration block, before the whole issue could be settled. The end result was, I ended up paying a fine, I think an amount less than Rs. 500. (Yes, I had to write an application, get it endorsed from two different people each in the administration block and the library, fill four copies of the challan, get them endorsed, and then go to that World Famous branch of the SBI on the COEP campus, to make the payment of this fine.) But yes, this part of the institutional objection against my PhD admission was, thereby, cleared.

[I had shown my willingness to get them a replacement copy, but this request of mine was politely declined. Apart from that feeling of guilt (who knows, had I checked that book myself and signed in a hurry?), it anyway would have been the fastest action towards properly closing the issue. Naturally, I was requesting them to let me see if I can find a replacement for the book. But they said no. Apart from the procurement policy, they were well aware that books do undergo change over editions. And, they were sure, that “the government” would always be able to find some way to source the replacement of the same edition as lost, some time later, according to its proper procedures. (I don’t know, but it is possible, that they had another copy of the same book with them anyway, stored sufficiently out of the reach of any student(s).) On the other hand, a patiently and friendly talking Distinction Class alumnus’ PhD admission could not now be held in abeyance forever, in their better judgment. Also, in their judgment, sufficient time had elapsed that even the most conscientious of the most conscientious Director could not point an accusing finger in their direction, should the matter ever come up for a review. Quite a few months (could be more than six months) had elapsed since my PhD admission application had gone in, and questions from the other side could also be raised: why had this issue come up only now, after 12+ years? Wouldn’t conscientiousness also go in the other direction? So, they let me go with a fine. Exactly as I had predicted, while explaining the matter several months earlier, to my mother. (She was unnecessarily aghast, once she read this mention of the police, on that letter.)]

But of course, obtaining the library clearance took sufficiently long time that, COEP, under Ashok Ghatol, had in the meanwhile revised the list of Emeritus Professors in the Mechanical Engineering Department, and thusly, the only guide who had accepted me as a PhD student (after a search for a guide lasting for one year and going over 12+ guides), was now denied a continuation of his Emeritus Professorship. He was declined an extension at COEP despite his having retired from COEP as a HoD, despite his being active in the field of education—including being on the board of an NIT, and despite the national level Fellowship which he had at the same time been granted by the UGC/AICTE at New Delhi. He still was declined an Emeritus Professorship. With no active professor at COEP available for guidance (it would be some months before I would approach Prof. Kajale), the matter had come back to square one at COEP.

BTW, in case you don’t know, the current dean of the Savitribai Phule University of Pune, Gajanan Kharate, has done his PhD under the guidance of Ashok Ghatol.

But of course it would be too much to expect that Gajanan Kharate could possibly be aware of the kind of institutional memory that the institutions under the University of Pune are capable of keeping: being aware of such possibilities requires a finer and longer experience with institutions in general.

Therefore, it would be too much to expect of him that the same University where he currently is the Dean, would, as recently as in 1990, in fact allow the mixing of the metallurgy and mechanical branches—even at the ME level, not just the PhD level (where the rules are anyway more relaxed).

This better practice was stopped only some time later, roughly around the same time that the IIT Bombay changed its whims in their regularly irregular course. It was the same time during which the hoards of the even more enlightened souls from the Amaravati, Aurangabad, and Walchand/Shivaji universities (but not those from IISc or IITs or foreign universities) had joined the ranks of the Approved Professors at the University of Pune. It was also the same time during which COEP’s name was slapped with the “Government” prefix, to make it fall in line with the similar Government-run colleges elsewhere in the state. If COEP had later dared to drop this part of its moniker (which, too, happened during this same period), then its alumni couldn’t possibly be relied upon to know about the better practices concerning engineering education elsewhere. Conscientiousness would be a key value to keep, especially during those troubled post-liberalization times, and especially in respect of the more exceptional ones among the COEP alumni—at least those who thought of themselves as being exceptional, anyway.

Now, cutting to the present, as far as this branch-“jumping” issue goes, there were many people wanting to go back to the (somewhat) better times, of course. (I know of at least one past Dean of Engineering of the University of Pune who did. In fact, two.)

Some other people were really not aware of the better times, but they simply faced the practical inconvenience of not getting a Government Job, and so were trying very hard to persuade both the university as well as the state government. The Maharashtra state government could only be sensitive to the representations if these were made in a democratic manner, and it would only be willing to review the mere technicalities involved, but of course, according to its own time-table—as a part of its ongoing Plans for a further expansion of the state expenditure.

Thus, while the efforts of these other people at the Savitribai Phule University of Pune didn’t at all bear fruit—I suspect that something other than conscientiousness might have come in their way—their tenacious representations to the state government certainly did. Over a period of some three years (give or take a few), the Mantraalaya finally did come to the point of concluding its ongoing reviews, and thus come to the point of issuing a GR.

It was thus that, in mid-2014, the Maharashtra State government came out with a GR affirming certain new eligibility criteria for the hiring of professors in the Government-run colleges in the state, as well as for the non-aided colleges in the state. These new criteria included allowing the graduates of the production, metallurgy and materials science branches (as also certain other new branches such as CAD/CAM, CFD, etc.) to become (full) Professors of Mechanical Engineering, if the candidate also had his PhD in Mechanical. (If he has a PhD, but if his PhD is not in Mechanical, the candidate now can still be hired, but he can now become only an Associate Professor, not a Full Professor. But at least, he can now get a job in any university falling under the jurisdiction of the Maharashtra State, now. More importantly, he can get a Government Job.) Including at the very highly conscientious university that is the Savitribai Phule University of Pune, Pune.

The GR had come out in the mid-2014. However, I didn’t know about this development. In the University of Mumbai, none was aware. None of my numerous friends (more than 10) working as Professors, HoDs, and Principals, in the private engineering colleges in the Savitribai Phule University of Pune, knew about it. Not a single one of them. And, Gajanan Kharate, even if he sure would be aware of the development, did not clarify the matter in response to the emails I sent (keeping him on the cc field for my application for a Principal’s position). In fact, he sent no replies at all—not even to the other email I wrote; this email was addressed to my friend’s friend (and a COEP alumnus), one who is a Principal at one of the (better) engineering colleges in Pune, and whose ad I was responding to. The Dean didn’t deem it fit to clarify the matter to a Principal of a leading engineering institute in Pune.

So, how did I come to know about the GR?

Only by accident, and only around mid-June 2015, i.e. one full year after it had originally been issued, while idling browsing the Web site of COEP. … You see, I have been looking for an opportune time to show them—the current COEP professors—down, and so, I sometimes do check out their Web site, esp. their recruitment section. For their latest recruitment advertisement, COEP had now put up this GR on their Web site. That’s how I came to know of it.

But, by this time—mid-June 2015—professors’ posts at the leading colleges in Pune had already been filled. (I saw all their advertisements in the Pune papers during April and May, but ignored all of these, concentrating my efforts instead only on the colleges in the better run University of Mumbai, because Mumbai had no issue concerning the metallurgy-to-mechanical branch-“jumping.”)

Anyway, the point is that after mid-June, I began applying to (and indeed also sporadically interviewing at) the private engineering colleges affiliated to the Savitribai Phule University of Pune.

The current status is that chances are high that I would get a job offer at at least one engineering college in Pune. I have been offered a position by phone and I have confirmed my acceptance by phone, but I have not received the offer by email. Once the latter happens, I will update this post when that happens.

I also want to see if this blog post goes against my getting that job offer (or any other job offer). No, not exactly for fun, but I do want to do that. … It’s just me, you know… I am just so talkative. And, readative. And, also, writative. Blogative, in fact. … I just can’t help blogging…. And so, it’s quite natural to want to see if (my) blogging habits come in the way of (my) getting job offer(s). Check back for any updates concerning this aspect.

Update on the same day (2015.08.11, 5:30 PM): Yes, I have received the job offer by email. I should be joining the college right this week. More, later. [The section on a song I like has returned immediately, however; check out below.]

 

[Some editing, as usual, is due, and I may effect it, but I am not in a hurry. Done. I may go out of town for something other than the job-related matters, too, in the meanwhile…. Either visit a friend, or go on a short trip driving in the mountains, or something like that… Check back after a couple of days…]

 


A Song I Like:

(Hindi) “ashkon ne jo paayaa hai …”
Singer: Talat Mahmood
Lyrics: Sahir Ludhianvi
Music: N. Dutta
[E&OE]

An introductory course on CFD—3

The Beamer slides for Lecture # 3 are uploaded; see here [^].

This lecture is not directly concerned with CFD, or for that matter, even with fluid dynamics proper. It instead concerns itself with some material that is pre-requisite to both. Namely, the topic of tensors. However, Indian universities don’t cover this topic very well during the earlier, pre-requisite courses—esp. at the UG level. So, I decided to throw in some formulae and a few points concerning vectors and tensors, that’s all.

The material for this lecture, thus, is totally “extra” (at least in a course on CFD). The treatment here is, therefore, very cursory. The idea was to give students at least some background into these topics, by way of a rapid review.

As usual, feel free to point out errors and offer criticism.

Further, this topic being challenging to present to a newcomer in a brief manner, this lecture is the one where I am confident in the least. (At least, it’s the first lecture of this kind.) So, any suggestions for a better presentation would be highly appreciated (though, given my experience of this blog, really speaking, I don’t expect any comments to come in, anyway.)

All the same, I am happy that so much of typing in of these equations is, finally, out of the way!

“Enjoy”!

* * * * *   * * * * *   * * * * *

A Song I Like:

I still have not yet reviewed and taken a decision as to the song I like, also for this time round.

So, this section will continue to remain suspended.

[E&OE]

 

An introductory course on CFD—2

The Beamer slides for Lecture # 2 are uploaded, here [^].

As usual, feel free to point out errors and offer criticism.

[I did spot a few typos in the Lecture # 1 (see previous post). These are being corrected, and an improved version will be uploaded some time later.]

Update on 2015.07.16:

For the convenience in updating, I have created a separate page at my personal Web site; it holds all the links to the material for this CFD course.

* * * * *   * * * * *   * * * * *

A Song I Like:

I have not yet reviewed and taken a decision as to the song I like.

So, this section will remain suspended, for the time being.

[E&OE]

An introductory course on CFD—1

I have uploaded the Beamer slides for the Lecture # 1 of an introductory course on CFD, here [^]. [Note: contents (and the specific link) may change anytime without notice.]

Feel free to download/browse. Also feel free to point out any typos, errors, or even mistakes, if any, of basic understanding. Also feel free to suggest any additions or changes. [But note, figures won’t figure in, in the near future.]

The last post in this series [^] was made when my old HDD was still intact. As you know, the HDD had a crash, and I lost most of my recent 1.5 years’ data. That certainly included my earlier notes on CFD. (I was more than half-way through, when the HDD crashed.)

The present notes (slides) represent my new effort. The notes are being written, once again, starting from the scratch. [No, not using the scratches on the surface of the conked up HDD, but, you know, starting from the scratch.]

I have not yet been engaged to give these lectures anywhere. I am just writing these notes on my own, with the anticipation that I would get a job in which I would be able to teach the course.

Hope that this material entices them, helps convince them… and they give me a job soon.

Update on 2015.07.16:

For the convenience in updating, I have created a separate page at my personal Web site; it holds all the links to the material for this CFD course.

* * * * *   * * * * *   * * * * *

A Song I Like:

(Marathi) “de malaa ge chandrike preetee tujhee”
Music: Hridaynath Mangeshkar
Singer: Lata Mangeshkar
Lyrics: Raja Badhe
[Additions to/editing of this post is not likely, though, the slides document may change.]

[E&OE]

 

I am in a superposition state of |being jobless> + |having a job>

Currently, I am in a superposition of the two basis states: |being jobless> and |with a job>.

Allow me to explain.

The first basis state should be self-explanatory to many of you. As many of you know, for the 1.5 years since December 2011, I had been going jobless. Even as of today, I still haven’t actually joined any job. So, there.

As to the second basis state: Well, I have been offered a job as a Professor in the Mechanical Engineering Department, at the Yadavrao Tasgaonkar Institute of Engineering and Technology, Karjat (YTIET, for short) [^]. So, I do have a job. Ergo, the existence of the second basis state.

But, why the superposition, you ask? Why not just the second state?

The thing is: Though I have the offer for this next job in hand, I haven’t actually joined it. The next semester starts in July, and that’s the time when I will get measured i.e. my state will actually collapse to that of |having a job> i.e. I will actually join the job and be placed on the official employee registers, be eligible for receiving a salary, etc.

Until that time, I will continue to remain in the state of this superposition of |being jobless> plus |having a job>.

Now, a bit about my new job.

YTIET is a relatively recent, self-financed engineering college, affiliated to the University of Mumbai. The institute offers UG programs in six branches, and PG (ME) programs in electronics and mechanical engineering (as of today, only in the machine design specialization). I will be teaching both the PG and UG students. The institute is located about 10 km from Karjat.

Karjat is a small town about 120 km away from Pune by road. Karjat is actually the last halt for the Mumbai commuter trains (informally called “local”s) plying on the SE railways side (i.e. on the Mumbai–Pune side). It is situated at the base of the famous Khandala “ghaat” (i.e. mountain-pass). Though the town is small, all trains (including the superfast ones) must take a brief halt at Karjat, because it’s here that the train engine is augmented with additional engines, to be able to climb the steep ghat. (I don’t know the reason why the trains going down the ghat also take a brief halt there!)

The Pune-Karjat daily commute for a job would not be totally impossible (a few km to the Pune train station from home + about 2.15 hours by train + 10 km further by bus), but it would be difficult enough for someone like me to avoid it. So, I plan to move to Karjat (or Panvel or so).

* * * * *

I had been jobless for 1.5 years because the University of Pune interprets the UGC/AICTE rules in a way that disallows the BE+MTech Metallurgy engineers from becoming professors of Mechanical engineering, even if they have a subsequent PhD in Mechanical Engineering.  [The University of Pune’s way of interpreting the UGC/AICTE rules also is the one that does not bar the BE+ME Electronics engineers from becoming Professors (and PhD guides) in the Computer Science and Engineering branch. [Yes, you got it right—the Dean of University of Pune himself has this background.]]

I got the job in the University of Mumbai because, in that university, the same rules are interpreted in a way that does not disallow metallurgical engineers from becoming professors of mechanical engineering. Not only are there well-known precedents (e.g. BTech, MTech and PhD all in Materials + Metallurgy from IIT Bombay), the University of Mumbai had also already gone ahead and come out with a detailed document that had clearly mentioned such guidelines. (In fact, as far as I know, none of the neighbouring universities—be it Mumbai, or Shivaji, or Solapur, or Marathwada—has this metallurgy-vs-mechanical branch jumping problem; only the University of Pune does.)

Another reason I went jobless for such a long time is that software companies in Pune either don’t do any real core work here, all of which is done at the parent companies’ offices abroad, or, if at all some such work is sent offshore here, then the local Indian idiots managers, in an attempt to save their, say, “basis,” keep all “senior” people like me, out, no matter how competent. In fact, it’s already more than a decade since the time that Infosys managers deliberately began recruiting only First Class graduates and keeping Distinction Class graduates out, in order to improve their “retention ratio.” (In this sense, the Pune s/w managers are not very different from the retired colonels of the Indian army of the sort I had discussed in one of my past posts. The morality of all such Indians is not different from that of those American JPBTIs who stole my writings at LinkedIn.)

Anyway, back to YTIET and all. … Once my mother passed away, it was no longer necessary for me to be near her in Pune, and so, the location now no longer was a constraint for me. So, I had began applying to the engineering colleges affiliated to the University of Mumbai, sometime in late March. I received quite a fair response from the very first college where I had applied. I in fact had an interview as early as in the first week of April, but they didn’t immediately release an appointment letter because theirs is a very new college—their very first UG batch has just finished only the first year and they of course don’t have any PG program—and so, they were not sure if it would be an optimal match for either of us. So, they kept the matter in abeyance for some more time. In the meanwhile, YTIET was one of the next group of colleges where I applied, and things went through fairly rapidly and smoothly here. Karjat also would be convenient for me from the viewpoint of keeping in touch with my friends and relatives from Pune.

* * * * *   * * * * *    * * * * * 


A Song I Like:

[Not sure if I have run this one before or not. Even if yes, I would like to rerun it. And, as a very rare exception, I also highly recommend the movie i.e. the visual part of this song. BTW, the location for this song is Khandaalaa ghaat at whose base is Karjat. Thus, all the sites in this song are barely within 10–25 kms from Karjat. Of course, the fact that it all looks so stunning only in the monsoons, is another story.]
(Hindi) “chhoTi si kahaani se, baarishon ke paani se…”
Singer: Aashaa Bhosale
Music: R. D. Burman
Lyrics: Gulzaar
[E&OE]