Criteria Definition and 87 Threads

Hello all Friends, I am taking my undergraduate, majoring in Electrical Engineering, concentration in Control It takes 10 semester to pass, 1 semester=4months. Well it might be rare for you. And I am in 8th semester doing my internship as one of the criteria in the curriculum. In this...

I have calculated a static contact stress of 670 N/mm2 using formula from Mechanical Engineering Design, Shigley, 5th Edition. My problems lies that there is no acceptance criteria. I'm using Grade 5 Structural Steel (yield~355 N/mm2). Previous threads have stated that a 2.5 * yield can...

Homework Statement Homework Equations The Attempt at a Solution

Hi, I am struggling with this strange problem. I have to find pairs of positive integers that satisfy two specific conditions. 1. you can’t go from one pair to another by subtracting/adding the same number to both members of the pair. 2. You can’t go from one pair to another by...

Hello all, I am new to these forums and just registered. I plan to be an active participant on here and reciprocate the generosity I've observed in other threads. Im looking for a certain "material" that can satisfy this list of criteria that I've put together. I'm pretty sure that I am...

I would like for you to suggest possible criteria for determining if someone is a nerd, dork, or geek. Those can be three different things. Here are some thoughts I had a few days ago: "I decide to go on Physics Forums instead of playing Halo. That proves I'm a nerd." (Halo's awesome by the...

Homework Statement Hi there. I've got some doubts about the maxima and minima on this function: f(x,y)=x \sin y. I've looked for critical points, and there's only one at (0,0). The thing is that when I've evaluate the second derivatives I've found that f_{xx}=0, then I have not a defined...

hi, am new in this forum thing, from Malaysia, currently pursuing South Australian Matriculation, graduating in 2010. I would like to major in physics and later be a lecturer whilst conducting researches. Would prefer to study overseas. Which university or college would be suitable with the...

hi, i am a mechanical engineer currently working on the design of a UAV. Our rough sketch kind of resembles Burt Rutan's Long-EZ or Velocity. I am attaching a couple of sketches of the aircraft which my team and i have constructed using XFLR 5. We will also be using XFLR 5 and Profili for...

10 CFR 50.46 gives the acceptance criteria as the required condition for the performance of ECCS. There, it is indicated that PCT (Peak Clad Temperature) must be below 2200F. On the other hand one can rarely find an accident analysis for NPPs with the result of the analysis showing the PCT...

Given metric spaces (X, d_X), (Y, d_Y), and subsets \{ x_1, ..., x_n \}, \{ y_1, ..., y_n \} of X and Y respectively, if I define a function that send x_i to y_i, what are the minimal restrictions we need on X and Y in order for there to exist an extension of that map to a continuous...

Is this method good for analyzing a pulse? Why is the averaging of the spectra good for noise cleaning? What's the criteria for defining how much windows in a set of data one should take? Anyone who clarifies this has a big thanks from me.

Hello Guys, I want to know what is the criteria to enter MIT(Massachusetts Institute of Technology) What are the courses offered here?

I have a 100x1 vector A, and want to know the ten indices i for which A(i) are the greatest 10 values in A. I can find the values by: B = sort(A) B(1:10); But I don't know how to find the indices, apart from starting a new if loop which searches the entire matrix (which seems very time...

Homework Statement Most functions can be rearranged in several ways to give x = g(x) with which to begin the fixed-point iteration method. For f(x) = e^x − 2x^2 , one g(x) is x = +- sqrt(e^x/2) a) Using the convergence criteria, show that this converges to the root near 1.5 if the positive...

I'm currently in the process of deciding where to go for my PhD studies (in Europe, i.e. I already have a masters, PhD is then just research). I wonder what are the criteria I should consider when making the decision? Of course active research in the area I want to study is in the first place...

Here we go... My text attempts to 'derive' an expression that explains when a flow is compressible or not: Great :rolleyes: ... if there's anything I like better than making density approximations, it's playing 'fast and loose' with them. :smile: He then goes on to say: I am...

What Basis Bypass Ratio Has Chosen For Turbofan Engine

A fluid is said to be in pressure if it has the ability to apply a force on an object and if the object is placed in the fluid or at the boundary of the fluid and it's surroundings. Is this force application required to be in all directions if a fluid is considered to be under pressure?...I...

Ok so you can't apply the quotient criteria to the harmonic series because: lim_{k\to \infty}|\dfrac{a_{k+1}}{a_k}| applied to the harmonic series: lim_{k\to \infty}|\dfrac{1/(k+1)}{1/k}| = lim_{k\to \infty}|\dfrac{k}{k+1}| < 1 which does fullfill the quotient criteria, yet the...

I'm kind of confused on how someone can receive a Nobel Prize in Physics if they had only devolped a theory. For example, if someone can show the use of mathematics to resolve a problem in physics (An example might be the unification of the forces) but lacks experimental evidence can they still...

Hi I am working at the moment on injury criteria. In the biomechanics domain the risk curve used is often a logistic regression. But this modelisation of the data is inconsistent not only because P(0) ≠ 0 but mainly because a bad information for exemple around a probability of 80 % will change...

Homework Statement So, I missed class the day Weierstrass M-test and cauchy criterion. I have a theorem for Weierstrass M-test, but the book gives no examples on how to use it. I figure cauchy criterion has to do with series, and states that a series is convergent if the partial sums is...

Homework Statement When an EM wave propagates, the E and M field at a point are perpendicular. If E and M at a point are NOT perpendicular to each other, can it be that an EM wave is passing through that point?Homework Equations The Attempt at a Solution Consider a linearly polarized light...

I am looking at colleges right now and I was wondering what other colleges you would suggest. I am looking for a college with a strong undergrad physics program. I got a 1100/1600 (1480/2400) on my SAT's, 3.74/4.0 GPA. I am looking for colleges close to the philadelphia area, but not in the...

Can anyone tell me clearly what the criteria for isomorphism in linear algebra is? For instance, my book gives the following reason: Transformation T is not isomoprhic because T((t-1)(t-3)) = T(t^2 - 4t +3) = zero vector. I don't get why this means T is not an isomorphism. Can anyone...

Homework Statement Let n \geq2. Which of the conditions defining a subspace are satisfied for the following subsets of the vector space Mnxn(R) of real (nxn)-matrices? (Proofs or counterexamples required. There are three subsets, i will start with the one where The subset V is that of...

Do all cells and microorganisms fulfill the criteria of life? Homeostasis Organisation Metabolism Growth Adaption Response to Stimuli Reproduction I'm asking, because I know that there are animal species which don't fulfill all those criteria (I know a mule can't reproduce) and I was...

Hey everyone, Does anyone know the 5 DiVincenzo Criteria for a scalable Quantum Computer? I am writing a paper, and can't seem to find a good link containing all of them. Thanks

Homework Statement An element mesh is based on the following 3-node and 4-node elements (0,0) (0.5,0.5) (0,1) (1.5,0) (1.5,0.5). The approximation for the 4-node elements is T = a1 +a2x +a3y +a4xy, while the approximation for the 3-node element is T = b1 +b2x +b3y. Is the converegence...

hey all, I'm entering my junior year as an undergrad, hence looking forward towards grad school studies. At the moment, I'm attending san francisco state and have a 4.0 in my major with a 3.7 overall. I'm working toward a BA in physics and a BS in mathematics, both to be completed in Spring...

we have , W=F(m) here W is function of m how do we define the fuction f as only as multiplication if this formula represent weight of the body. is there any criteria for mathmatical oprators to be addition, subtraction , multiplecation or division pleasezz...

It seems to me that solitary waves do not exit very often in nature? What I am referring to is the solitary traveling wave with the conventional sech^2(x) profile. When would such solitary wave arise in water or other flows?

i'm having a problem proving raabe's criteria for convergent sums. here in planetmath there's a description of it: http://planetmath.org/encyclopedia/RaabesCriteria.html i got that the first inequality is correct when mu is smaller than 1. i got a hint in my test that i should show that...

A few words about philosophy in general would be in order first, I suppose... The universe has one basic issue that philosophers have addressed for 3000 years...is it made of one substance, and is it thus monistic? Can there be different basic substances; that is can there be a true...

I was curious after reading Loren Booda's Best personal web page thread and wanted to figure out what everyone here thinks are the best critera for designing webpages. One of the reasons I liked this forum over the other sites as far as webdesign goes is its super-fast loading times (we have...

This thread was continued/spawned from the 'Battle of the Prophecies' thread. No, you're missing my point completely. What I'm saying is that if you cannot tell what it means ahead of time, then you can make any prediction, as long as it's interpreted metaphorically, then say it's true...