Network Definition and 444 Threads

Homework Statement The question is to find the Thevenin equivalent of the network across the terminals a,b. The circuit is as follows:-- The solution is Zth = 12.166 angle(136.3*)ohm and Vth = 7.35 angle(72.9*) I can find out the Vth, that's easy. But I can get the Zth right coz there...

Hello, This is my problem: I have a network analyzer, that is capable of measuring the S-parameters of a 2 ports network. Let's say that I connect antenna #1 (a standard half-wavelength dipole) to port #1 of the NA, and antenna #2 (same type of dipole) to port #2 of the network analyzer...

Hi, Am new on this forum.I am about to start my final year in electronics and telecommunication and i am planning for my final year project a research on how traffic (signaling) in a specific cell in a cellular network can be sent to another cell when there is a huge congestion like in a...

Haven't really seen much discussion about this field, but it seems interesting. It appears to have some promise in systems biology, but what about in other fields? What kind of material will arise from this field? Is thermoeconomics mostly pseudoscience, or just undeveloped?

Homework Statement This is the worksheet: http://webcache.googleusercontent.com/search?q=cache:9jyqtuswY1AJ:www.chemmybear.com/groves/apch13_imfans.doc+ap+chem+pasadena+imf%27s&cd=1&hl=en&ct=clnk&gl=us&client=firefox-a Homework Equations None, as far as I know The Attempt at a...

Since my late interests have been related to networks, I've started a pet project focusing on natural numbers network. I wanted to share my early explorations with this community since you have the proper background to interpret the results. I chose this network exactly because compared to...

Hey, When we play Poker online, we are using a centralised network. You deposit your cash online, sit down at a game and play. You place your trust in the site to be secure; no other players can see your hands and no money is being secretly stolen from you. Even big name sites have been known...

I know there are many and I know their approximate member count, but in your opinion, is there any 'preferred' social network which scientists (preferrably physicists) tend to use more? thanks

Homework Statement The first circuit has a capacitor with capacitance c and an inductor with inductance L. In series with this is another capacitor which is connected to the next loop in the circuit. It look something like http://imgur.com/YJDaD.png" Sorry for the crude drawing...

I have a circuit consisting of a battery and several capacitors, some quantities are known and some are not. The capacitors were completely uncharged before the battery was attached and we are considering the static situation. (Be sure to keep at least 3 sig. figs. in your answer for all parts...

Capacitor Network (Please help!) Homework Statement In the circuit below, consisting of a battery and several capacitors, some quantities are known and some are not. The capacitors were completely uncharged before the battery was attached and we are considering the static situation. Circuit...

OK, I posted here a while back with issues home networking, specifically between varying operating systems (Ubuntu 10.04, Windows XP, Windows Vista, and Windows 7...sigh). Either way, suddenly the other day, I was on my desktop and noticed that I could find my girlfriends Windows XP machine...

. How a field request capacity of a channel?

I'm trying to understand how ISPs agree to connect to each other by considering a hypothetical situation: Suppose I wanted to start my own ISP in a small town. Would I have to pay to connect to another network that is already connected to the internet (hence that would make me connected to the...

Homework Statement See Figure Homework Equations The Attempt at a Solution I honestly don't know how to start this problem, I tried cutting out the current source and I'm thinking I should get something like a voltage divider. Does that help in any way? A slight push to get...

I think an interesting problem would be trying to deduce how likely you are likely to enjoy a piece of internet content by how well your friends like it. We all have different backgrounds and interest and some things have more mass appeal then others. If you take two friends, you can have widely...

There are no Bayesian Networks for continuous random variables, as far as I know. And the Netica Bayesian Network software discretize continuous random variables to build bayesian models. Are there any reasons for this? Has anyone proposed continuous random variable bayesian networks?

I'm about to purchase a laptop and will be looking to set up a home network in order to use it with the internet I have set up with my desktop. I'm looking to do this via Netgear Powerline Ethernet. I'm completely new to this type of thing, so I'm hoping someone knowledgeable here could see if...

Today's ethernet networks [LAN only I refer] we mention [1000baseT/100baseT - RJ-45] are broadband in nature or baseband? May mixed PCs send messages simultaneously to each other and internet, all to same network part, under one switch, for example...? eg a HOME DSL NETWORK it it broadband...

Homework Statement you and your laboratory team have been given a project by your electrical engineering professor. Your team must design a network of capacitors that has an equivalent capacitance of 2 microF and breakdown voltage of 400V. The restriction is that your team must us only 2...

Hi, My name is CK and I have question on calculating static pressure through a ducting network. Some context: The ducting network services 360 identicle components. This is achieved by dividing a main duct into 4 branches, each servicing approximately 90 components. There is a desired...

I'm currently doing a project on neural network controller for an internal combustion engine to reduce emissions level. Can anyone assist me in training such models (neural networks)

As an example, say 10 computers are connected to the network through 1 cable, (and so only 1 can be connected at anyone time) and each computer needs to be on the network for 12 minutes an hour on average, then what kind of pmf would you use to model the number of computers that simultaneously...

URGENT: Finding the Current and Power across each Resistor in a Complicated Network Homework Statement For the circuit below, a 12 V batter is connected across the points a and b. Determine the following: a) the equivalent resistance between points a and b b) the total current flowing...

I have a power network, two parallel generators which feed 2 parallel delta-wye transformers with a bus tie inbetween, from 690V to 33kV. These two transformers feed a bus which a whole bunch of 33kV/690V DELTA-WYE transformers hang off for distribution. There was a fault the other day at the...

Hi, I'm trying to find a way to calculate the resting position of a network of springs that is built as follows: n number of springs with identical k constant, but with different resting lengths are connected together at one end of each spring. The other end of each spring is fixed to some...

Homework Statement To find the equivalent capacitance of the following network (image attached at the end of the post). The blue capacitors have capacitance of 2C and the black ones have a capacitance of C. Homework Equations Q = CV where Q is the charge on a capacitor, C it's capacitance...

Hello, if we have 2 computers connected to the same network by the internet(have the same network address), how can i share files between them?

Homework Statement Consider the resistor network shown in the figure below, where R1= 5\Omega and R2= 7\Omega . (a) Find the equivalent resistance between points a and b Req=([1/6 +1/5]+7)+12+6=(9.73)-1+18-1=6.32\Omega (b) If the potential drop between a and b is 12 V, find the...

Is it possible to combine two AC signals that are slightly out of phase, but have the same frequency, voltage and current through an inductor, resistor series network.

In the network given below find the voltage VX . Please check the link for the circuit diagram. And Kindly explain the method? http://i33.tinypic.com/o7u748.jpg

please how can i connect a wireless moderm that i use for my internet to a cabled network of three pcs

1) Is there a way to view a log of who has been using my wireless network? I went to my router's configuration page, and there was a Log section under Administration tab, but I couldn't find a log. 2) I can't find the installation CD for my router, is it possible to set up a password for my...

Homework Statement hi guys, i'm having trouble applying Kirchhoff's laws to determine the equivalent resistance of this symmetrical array of resistors (see attachment); i think there is a quick trick, using 4 current loops, but i can't remember it... nor find relevant documentation – this is...

Homework Statement A capacitance matrix represents the charge coupling within a group of conductors — that is, the relationship between charges and voltages for the conductors. Given the three conductors shown in the following link, with the outside boundary taken as a reference...

How is the job outlook for Network Engineering or Network Administration? What kinds of Maths and Sciences would you recommend to add to my studies?

Ok, I'm watching all of the episodes this season. This seasons does seems to be going better, they are eliminating the duds upfront, which is a nice change. They canned that weird health food nut this week. The next person I want to see go is Jamika. She is so fake when she gets in front...

So i am having trouble figuring out how to approach this problem A) What is the current through the resistor, R1 in the above circuit? + --- _____________R2_________ /..... Joint / /______R1_________/___________R3/...

Homework Statement This is the diagram: https://wug-s.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?cc/DuPage/Phys1202/summer/homework/Ch-21-DC-Circuits/resistor_network/ex1s95p3.gif R1 = 3W, R2 = 6W, R3 = 11W, R4 =8W, V=6V A) What is the current through the resistor, R1 in the...

ISP can tell what my internal network ip's are? To make a long story short, I use a router, with two computers behind it, I called my ISP for technical help, and the technician there told me I use a router (which is a reason for him to not help me..). He said he sees more then one IP address...

All right folks...a little help if you can. I have had a home wireless network for a while. It's between my desktop (the server) and my laptop. It's about as simple as you can get. It has been working fine up until a month or so ago. My desktop has 2 hard drives, both of which I have as...

I want to network two computers using dial up connection. I need help

hi, thanks for taking time to try and help me out, i have hit a brick wall with these questions, i have made an attempt and don't no where to go from there, and feed back would be great thanks alot... The problem Using both Norton’s and Thevenin’s theorem determine the power dissipated in the...

Homework Statement Assuming R = R' = 1.97 Ω in the network shown above, determine the net resistance a) between the points a and c b) between points a and b. HELP: Use symmetry. HELP: Imagine applying a voltage between a and c and think about what current will flow in each resistor...

Homework Statement 1. For each of the following network graphs and digraphs, determine if they are complete, where you could enter and exit and explain why or why not complete? Homework Equations http://img5.imageshack.us/img5/7741/matrixw.jpg The Attempt at a Solution...

Hi I am struggling to answer this question: The input coupling circuit of the amplifier shown in the figure consist of an RC network, with R = 1 kW and C = 5mF fed by a sinusoidal voltage source of r.m.s. amplitude of 200 mV. Assuming that the input impedance of the amplifier is, at all...

Ten phones are linked by only one line to the network. Each phone needs to log on average 12mins an hour to the network. calls made by different phones are independent of each other. They can't simultaneously call. What is the probability that k phones (k=0,1,2...10) simultaneously need the...

Have to do this question fairly soon in an exam. This is pretty much the exact same question that will be on it. What sort of maths is this and how the hell do I do it??!? I don't have any notes on it. ----------- The following network (Figure 1 below) represents the road system in the town...

Suppose that you have a http://en.wikipedia.org/wiki/Flow_network" with integer edge capacities, and n dollars. You may spend one dollar to increase the capacity of an existing edge by one. The question is, how can you spend your dollars so that the maximum flow through the resulting network...

How is a series RC network acting as a lead network & a parallel RC combination acting as a lag network ?