Process Definition and 1000 Threads

One would assume that: $$t \propto h^\alpha m^\beta g^\gamma$$ Where t = time taken for object to fall, h = height dropped from, m = mass, g = acceleration due to gravity. By doing some dimensional analysis one can find that: $$t \propto h^\frac{1}{2} g^\frac{-1}{2}$$ and that t is...

I will be entering my third year of undergrad this fall in the process of earning my Bachelor of Science in Mathematics. My current stats for school such as GPA is 3.74 (no research experience, already taking upper-level undergrad mathematics courses, maybe a few grad courses). However, I am...

1 / 2 = 0.5 0.5 / 2 = 0.25 0.25 / 2 = 0.125 0.125 / 2 = 0.0625 0.0625 / 2 = 0.03125 What is the algebraic formula for this?

I attach the following question about branching processes. Xn is the size of the nth generation. F(s) is the pgf of Z, the offspring distribution. Any hints/help on how to proceed with my proof would be greatly appreciated! Regards

Manufacturing design / process engineer -- hands on or sit on yer butt? I've heard that manufacturing process design engineers (not sure if that's exactly the right title, basically designing the things you see on "how its made") have much more "hands on" experiences than other engineering...

We learned the GSP yesterday in class, but my teacher said something that seems to conflict with the textbook. He said that we can set our first vector (w_{1}) equal to any vector in the set. However, I keep getting different answers than our textboook when I do this. My question: Is it...

Hello, I want to make this short and simple. Basically I have a very strong interest for physics;I have been staying up on news for about 2.5 years, I have read countless books on the topic, and I can't stop thinking about the theories I read about. All of this is not enough for me, I want to be...

Hi, I have been given the following questions to answer: write a report on the following: - the process by which plain carbon steel is produced - the process by which alloy steels are produced - the process by which aluminium is produced Now I am not entirely sure how to answer this and...

Yield of ethanol is mostly about survivability of the yeast. We were wondering why Yeast can't survive too high concentrations of ethanol? Something to do with the denaturation of proteins? Not really sure on this, any help is appreciated Thanks

Why does "resonance" greatly increase the likelihood of the triple alpha process? Why does the fact that the combined energy of 8Be and 4He is (almost) the same as the energy of an excited state of 12C greatly increase the probability of that reaction (i.e. 8Be + 4He → 12C + stuff) occurring...

The technical definition of an adapted stochastic process can be found here https://en.wikipedia.org/wiki/Adapted_process. I understand the following chain of consequences from this definition: {X_i} is adapted \Rightarrow Each random variable X_i is measurable with respect to the...

I might need you guys to help me see how this proces, will be distributed: Suppose we have a large amount of elements N(≈1012). I'm simulating a system where I for each iteration damage a random element. If an element gets damaged its damagecounter goes up 1. So say I pick element number...

Working through a paper that uses this result about branching processes. Can't seem to figure out a way to connect the dots. Anyone have any suggestions? Let Zt be a branching process where each individual gives birth to a single offspring at rate β > 1 and dies at rate 1. The transition...

I understand that in the simple branching process, each object gives birth to its children according to the same distribution. However, I now need to handle a special branching process in which objects generate decedents according to different distributions. For example, objects generate...

We learned about calculating entropy in my physics 2 class, and i came up with an example that my professor couldn't answer, so I was hoping someone here could shed some light on this for me. We learned that change in entropy for an irreversible process be represented by changes in entropy of...

X = (Y(t))^2 where Y(t) is zero mean Gaussian process and correlation function R_YY = exp(-λ|τ|) i want to check if X is weakly stationary.So i guess for the first part, i checked if mean is constant σ^2=R_YY = exp(-λ|0|) = 1 E(X^2) = μ^2+ σ^2 = 1 since μ is zero and σ = 1 I wanted to check if...

[FONT=CMR12]It is widely believed that the daily change in currency exchange rates is a random variable with mean 0 and variance v[FONT=CMR12]That is, if [FONT=CMMI12]Y[FONT=CMMI8][FONT=CMMI8]n [FONT=CMR12]represents the exchange rate on the [FONT=CMMI12]n[FONT=CMR12]th day...

Homework Statement Derivative of 10 - 20/(t+1)^2. It's hard to write but basically 10 is IN FRONT of the equation, it's NOT 10-20 together, over (t+1)^2. 10 is separate and is in front of the equation. Homework Equations 10 - 20/(t+1)^2 The Attempt at a Solution My main question is the...

Homework Statement The time between process problems in a manufacturing line is exponentially distributed with a mean of 30 days. (a) Let T be the waiting time (in days) for four problems. What is the distribution of T? (b) What is the expected waiting time for four problems? (c)...

If a stoch. process Xt has independent and weak stationary increments. var(Xt) = σ^2 for all t, prove that Cov(xt,xs) = min(t,s)σ^2 I'm not sure how to do this. I tried using the definition of covariance but that doesn't really lead me anywhere. If it's stationary that means the distribution...

Hello everyone! Need help with selecting terms for translation. The situation is as follows: A new production process is being developed. First, this process is tested on lab-scale equipment to see if it goes ok. (It may be full-scale equipment in a workshop too.) If any bugs are...

Hi I have a stationary gaussian process { X_t } and I have the correlation function p(t) = Corr(X_s, X_(s+t)) = 1 - t/m, where X_t is in {1,2,..,m}, and I want to simulate this process. The main idea is to write X_t as sum from 1 to N of V_i, X_t+1 as sum from p+1 to N+p V_i and so on, where...

Anyone know of some theory or equations to smooth out a 5 stage production sequence? I don't even know what the proper terms and jargon is otherwise I would just google it. Why don't I have an in house industrial engineer? Because its not a factory its a financial industry...

Hi, I proved the following statement by induction. Does anyone see any oversights or glaring errors? It is for a class where the homework is assigned but not collected, and I just want to know if I did it right. ThanksQUESTION: Consider the stochastic process \{X_t,\,t=0,1,2,\ldots\} described...

Imagine a pallet (or any other kind of small platform) tied to a cable or wire, which is itself attached to a turbine, all of this elevated a few meters above the ground. Now imagine a heavy ball or weight that falls on the pallet and pushes it down, thus pulling the cable down which activates...

What is the process called of heating alloys to Hightemperature 10,000f+ and making them many times there normal strength? do most uivercitys have such a machine? I read about it years ago in New scientist magazine, any help would be great Andrew Perry

Dear all, I have a question on the basic concept of branching process. Say, in such a process, different objects of a generation don't interfere with each other. Consider an email forwarding analogy where one node forwards an email to some other users. And...

Gravitational waves are generated when the mass quadrupole moment changes in time. We also know motion of mass contributes to its gravitation. Does the producing process of gravitational waves, which involves mass in accelerated motion, produce gravitation as well? If so, is it of less, equal...

I've also seen it referred to as Business Process Re-Engineering. Is anyone familiar with this? I really don't see any graduate degrees or certificates out there.

Hi,all My problem is following this picture! http://mykomica.org/boards/shieiuping/physics/src/1325318780058.jpg If the system is isolated, dQ is always zero. Sb-Sa ≥0 And it satisfies the requirement of spontaneousness in isolated systems. So ,I do wonder if irreversible process is always...

I'm trying to figure out how many bits of information the human has stored in his mind. I personally believe that information is not stored in atoms in the person's brain but is stored in an immaterial realm and the information is not made of material. We can talk about whether or not that's...

Homework Statement Suppose that stress fractures appear in railway lines according to a Poisson process at a rate of 2 per month. a)Find the probability that the 4th stress fracture on the railway line occurred 3 months after the process of checking the new railway lines. b)Suppose new...

I can only assume it is, if a Higgs can be found anyway. I learned about hysteresis in certain physical processes. I don't have the math to guess nor Google skills to find a clear answer. If it were, would a sufficiently large and hot enough black hole be in danger of losing its mass terms...

Homework Statement A thermally isolated chamber is pumped down to a very low pressure. At some point, the chamber is vented slowly so that it is filled with air up to atmospheric pressure, whereupon the valve is closed. The temperature of the air surrounding the chamber is T0=300 K. What is...

Each state gets to select how they pick their electors based on whatever method they want. Imagine if they made it an auction: people can give money to the state, and whoever gives the most money by the election wins (you can give money in support of a candidate). Anybody is eligible to give...

Homework Statement The figure shows a thermodynamic process followed by 130 mg of helium. How much work is done on the gas during each of the three segments? p_1 = 1.08 atm, p_2 = 5.41 atm, p_3=1.08 atm T_1=133 C, T_2=T_3=1760 C V_1=V_2=1000 cm^3, V_3=5000 cm^3 These are answers...

Homework Statement A 6-gallon radiator is filled with a 40% solution of antifreeze in water. How much of the solution must be drained and replaced with pure antifreeze to obtain a 65% solution? The answer is given: Ans. 2.5 gallons The Attempt at a Solution Let x be the amount of added...

hi there...i am currently working on how simulate end milling process in ansys 8.0. does anyone know how to employ element kill technique with multiple loadsteps? how to determine the von-mises stress for various loadsteps and how to create mulltiple loadsteps?

In optical parametric conversion process, such as second harmonic generation,the conversion efficient is determined by function sinc(ΔkL),where L is the length of the crystal,and Δk is the phase mismatch condition. When the sum of wave vectors of the two fundamental photon,equals to that of the...

Homework Statement 1 kg of H20 goes through a reversible adiabatic proces from 220kPa, 200C to 50C in the final state. What is the pressure final and volume final? Assume S1=s2 Homework Equations Conservation of Energy The Attempt at a Solution Found S to be 7.5080, was...

I have the following process: q(R) + \bar{q}(\bar{B}) \rightarrow q(R)+\bar{q}(\bar{B}) In words: a quark with red color-charge and an antiquark with an anti-blue color-charge are incoming, and a red quark and anti-blue antiquark are emerging. Since I am not sure how else to draw that, I try...

Homework Statement I am told that I have particles which each yield a random number of offspring of known distribution independently from each other and from the past generations. Xn is the number of particles in the nth generation The distribution of a typical family size is Z and so...

Homework Statement http://img140.imageshack.us/img140/2963/isobaricsteam.jpg P1 and P2 are 1 bar. V2 4.812 and V2 specific volume is 2.406 X1=0.6 Homework Equations v=vf+x(vf-vg) W=-P(v2-v1) Q=(u2+pv2)-(u1+pv1) The Attempt at a Solution Hi guys first timer here...

Hello everybody I have a bit of a problem with understanding the conversion from a WSCS process X(t) to a WSS process Y(t) = X(t - \Delta) . With \Delta the time shift being a uniform random variable on (0,T) , independent of X(t) and T being the period of the mean function of X(t)...

Let's identify a point of view: I think she thinks poorly of me because I'm not a certain way. I then think, I'm not that certain way because I'm like this. I then spend ways reaffirming this. She now thinks well of me because I'm the person I perpetuate. I'm bothered when people challenge my...

Evaporation is a cooling process. What cools and what warms? Also, condensation is a war,ng process. What cools and what warms? I understand that during evaporation the water molecules of water slow down therefore cooling down. But does this mean that the air warms up? The opposite goes for...

Homework Statement The rate of occurrence of events in a non-homogeneous Poisson process is given by: λ(t)=12t e-2t. (c) Find the p.d.f. of the time until the first event occurs after time t = 1. (e) After what time is it 95% certain that no further events will occur? Homework Equations...

Hi, I have a 8th order s-domain transfer function that i would like to normalize for plotting a bode plot. The transfer function is in expanded form i.e. s^8 +s^7+s^6 etc. i want to normalise the frequency f by frequency f0 such that s = j(f/f0) instead of just s = j2πf. the reason i...

What is Quasistatic process? the first law of thermodynamics for a quasitatic process: [SIZE="4"] dH = δQ + Vdp ------> A if it is quasi static [SIZE="4"]dp should be very small which can be ignored and hence dH = δQ so how come the equation "A" holds true for a quasi static process.

Homework Statement 0.21 x 10-3 kmol of ideal gas occupy a volume of 5.0 x 10-3 m3 initially at a pressure of 1.2 x 105 Pa and temperature T. The volume of the gas is first decreased to 2.0 x10-3 m3 at a constant pressure of 1.2 x 105 Pa, and then the pressure is increased to 3.0 x105 Pa...