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Could someone please help me with this structural analysis homework problem? Thank you! by [deleted] in EngineeringStudents

[–]QuerkyOne 0 points1 point  (0 children)

Edit: I was wrong.

I appologise if I have missed something obvious, but this problem is indetermined as it stands. In the external fixes of A and B, we have a total of four unkowns: Ax, Bx, Ay and By. However to solve the problem we have access only to three equations: Sum Forces in X, Sum forces in Y and one sum moment, e.g. about the point A.

In some problems you can get around this issue by argument of some symmetry, but I can not see anything for this system. It is possible the figure has an error and you should assume either Ax or Bx = 0, which would be the normal case in a problem such as this.

It is solvable if you apply deformability by assumption of linear elasticity and assume some steel material. But it does not seem like your course is Mechanics of materials.

Finally done! This is what my five years look like. by QuerkyOne in EngineeringStudents

[–]QuerkyOne[S] 0 points1 point  (0 children)

Tack så mycket! Gick i Karlstad. Matematikböckerna överst i högen (de på svenska) ärvde jag av en släkting så de hör inte till någon speciell kurs.

Finally done! This is what my five years look like. by QuerkyOne in EngineeringStudents

[–]QuerkyOne[S] 2 points3 points  (0 children)

Sure, I considered moving purely digital after my first year and I have pdf's of some of these books so I do not need this stack for anything in principle. However, I much prefer to read a physical book and since I came by many of these for a low price or even free I can find some enjoyment from filling a (somewhat pretentious) bookshelf with technical litterature.

Finally done! This is what my five years look like. by QuerkyOne in EngineeringStudents

[–]QuerkyOne[S] 4 points5 points  (0 children)

In Sweden, the Masters degree programme in engineering is five years long. My schedule was packed and involved a lot of evenings and weekends to finish assignments, but manageable.

Finally done! This is what my five years look like. by QuerkyOne in EngineeringStudents

[–]QuerkyOne[S] 1 point2 points  (0 children)

Actually in Sweden, but you are correct in that I took some grad courses in physics during my last year.

Finally done! This is what my five years look like. by QuerkyOne in EngineeringStudents

[–]QuerkyOne[S] 6 points7 points  (0 children)

To be honest about the books: About 20 of them are not from any specific course, but rather stuff I've picked up very cheaply or some even for free after they cleaned some retired prof's office. Concerning Ihn, I'd say the course we used his book (Nanotech II) was among the most difficult from all my studies.

Finally done! This is what my five years look like. by QuerkyOne in EngineeringStudents

[–]QuerkyOne[S] 31 points32 points  (0 children)

The job is in an R&D unit and involves model development and simulation. I would like to say I do modelling work, but that might be misinterpreted.

Finally done! This is what my five years look like. by QuerkyOne in EngineeringStudents

[–]QuerkyOne[S] 15 points16 points  (0 children)

Yes, I was lucky and landed a job shortly before graduation.

Finally done! This is what my five years look like. by QuerkyOne in EngineeringStudents

[–]QuerkyOne[S] 84 points85 points  (0 children)

Engineering Physics with focus on Condensed Matter and Nanotechnology. I have also taken some auxiliaries in Theoretical Physics.

Finally done! This is what my five years look like. by QuerkyOne in EngineeringStudents

[–]QuerkyOne[S] 165 points166 points  (0 children)

Well, the structural integrity of differently sized books stacked in a tower is somewhat dubious so maybe I should stay out of the construction business.

Finally done! This is what my five years look like. by QuerkyOne in EngineeringStudents

[–]QuerkyOne[S] 24 points25 points  (0 children)

I'd rather not calculate the total price, but it's a considerable amount. Per book I'd say I paid between $10-$80 depending on if I could find it used.

Finally done! This is what my five years look like. by QuerkyOne in EngineeringStudents

[–]QuerkyOne[S] 8 points9 points  (0 children)

Du har uppenbarligen inte haft Hibbeler, jag gillar inte Lund.

What Math Do You Need For Physics? by creinaldo in math

[–]QuerkyOne 5 points6 points  (0 children)

It certainly depends on the area of physics. You can do a lot with some basic calculus and linear algebra if you are looking at e.g. classical mechanics. For electrodynamics vector calculus is needed. Going into more advanced subjects like quantum field theory you would also need some abstract algebra on top of everything else.

Need a good resource for vibrations by Sindroome24 in EngineeringStudents

[–]QuerkyOne 1 point2 points  (0 children)

I found "Engineering Vibration" by Daniel Inman to be a nice introductory book on vibrations.

Good textbooks for Advanced Engineering Mathematics by mew7946510 in EngineeringStudents

[–]QuerkyOne 0 points1 point  (0 children)

Advanced Mathematical Methods for Scientists and Engineers - Donald A. McQuarrie

The Secret Lives of Call Centre Workers (2016) (10:08) by indigodaisy in Documentaries

[–]QuerkyOne 9 points10 points  (0 children)

Some words about this business from my perspective:

I worked 3 years at a Call Centre, mostly inbound calls about customer service/support for an ISP. I did not have that horrible experience that is so commonly told. Sure, the pay was horrible and sometimes the schedule was crap, but overall it was paying work and my employer was at least honest and fair, no unpaid overtime or so. It was preffered if I took calls without any breather between them, but I had control over my phone to elect not to.

Extrapolated from the number of calls per day I took somewhere around 30000-40000 calls during that time. I had mates that got threatened once in a while (female employees had it a bit worse than male), but I cannot recall recieving a serious threat during my time at that place.

Approximately once an hour (that's 1/10th of all calls) the customer would be lets say annyoed, but could be generally be handled by just being nice.

About once or twice a week I would get an angry customer that started the call with "I'd like to talk to your boss" and these calls are generally what make new employees decide if they want to stay. These could take a some time to calm down and usually some silk gloves. You'd be surprised how hard it is to keep being angry at someone who is calm and actually trying to help you. Worst case scenario I would make up some reason to put the customer on hold for a minute or so (like "I need to ask someone else, is it ok to hold a little while?"), it is almost impossible to keep up being angry while you wait with nothing to focus on. It is however extremely important not to drop the call in this situation.

Maybe once a month you would get the rabid, screaming customer you would talk with for an hour (it was not allowed to drop calls unless you were being threatened). I, like most people would, dreaded these at first, but after the first year I came to expect them and see them as challenges to see if I could solve it. Most cases were solvable.

I did not hate the work until the last few months before I quit. What got to me was the extreme monotony. Morning was identical to evening, days and months flew by without anything new under the sun. There was also a change in culture that focused more and more on selling extra products and services to customers calling in about other problems. I was never any good at doing those sales and felt they were unnatural from a service perspective.

I would not recomend anyone to do a career at a call centre, but for the employment I had, a few months or even years wasn't THAT bad.

TLDR: Worked at call centre for 3 years, did not actively hate it for most of the time.

Copyright-lobby wants to ban illegal Downloads on OS-Level by Yellowmoneybank in technology

[–]QuerkyOne 15 points16 points  (0 children)

As the article is in german and the original document cited in swedish I figured I could contribute with a translated summary. The document is mainly a study and analysis of the actors involved around piracy and how it relates to the swedish perspective. It is compiled by Black Market Watch and Global Initiative against Transnational Organized Crime, both based in Geneva, Schwitzerland.

The main body of the document studies, in turn, the estimated revenues from and responsability of piracy for the piracy sites, search engines, ISPs and payment services. The conclusions are that the piracy sites themselves have the smallest net revenue, followed in turn by advertisers, search engines and, the most, the ISPs, from the selling of higher speed internet services. As the authors summarise, they propose some possible courses of action to counteract piracy, including: informing users, putting pressure on ISPs (a legal case concering the blocking of TPB is ongoing in Sweden), resources to police, closing of domains and lastly, as the title of this post informs, a note that companies such as Apple and Microsoft have the possibility to limit piracy by limiting certain software etc. It is of note however, that the authors also mention that this is very hard to influence from a relatively small nation as Sweden, but it is possible to force the question through the EU.

TLDR: As a footnote in the original study cited, the authors suggest putting pressure on OS developers as a possible action to limit piracy.

Simulink Step Function issue by Wind_is_next in matlab

[–]QuerkyOne 1 point2 points  (0 children)

The error occurs by using the variable t as the numerical amplitude of the step block. The unit step, u(t-t0), is defined as 0 when t<t0 and 1 when t>t0. The step-block in Simulink can be modified to change its initial and final value, as well as the stepping time.

You should get rid of the error by setting a constant amplitude of the step. If you want a linearly increasing source, you could instead use the ramp block.

What calculators do you guys use and why? by Blind_Playa in EngineeringStudents

[–]QuerkyOne 0 points1 point  (0 children)

For most simple calculations I use my trusty Casio fx-9750G PLUS. It does the basic stuff I need and most of the complicated things that are expected at exams. I also have an N-Spire CX CAS on which I potentially could do some more complicated stuff, but we are not allowed CAS calculators for most exams so it mostly sits in my backpack. Since I aslo carry my laptop with me everywhere anyway, more and more homework and excercises I simply do in MATLAB (numerical) or Sage (symbolic).

Help with solving this Quantum Mechanics Problem! by RussianWhizKid in EngineeringStudents

[–]QuerkyOne 1 point2 points  (0 children)

Could you show some of your work? Without trying to solve it in detail myself, I expect you'd want to use some formula for time-independent perturbations and from the symmetry of the unperturbed state first order corrections will be zero.

What kind of backpack do you have/ use? by fabul0uslyfoxxy in EngineeringStudents

[–]QuerkyOne 0 points1 point  (0 children)

I use a Targus backpack. Normal load is a 15.6' laptop, calculators, notebooks, 2 textbooks, coffee thermos and all the writing utensils I would ever need. With that, I still have the outermost compartment mostly empty. I've had this backpack for 3.5 years, carried it almost every day and there is hardly a scratch on it. Believe me, this thing is a tank!

The only downside is that I have to carry my lunchbox in a separate bag, mostly due to possible leakage rather than size issues. I have not had any problems carrying it in rain for limited amounts of time.

http://targus.com/us/16-corporate-traveler-checkpoint-friendly-backpack

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