What is Network analysis: Definition and 24 Discussions

Social network analysis (SNA) is the process of investigating social structures through the use of networks and graph theory. It characterizes networked structures in terms of nodes (individual actors, people, or things within the network) and the ties, edges, or links (relationships or interactions) that connect them. Examples of social structures commonly visualized through social network analysis include social media networks, memes spread, information circulation, friendship and acquaintance networks, business networks, knowledge networks, difficult working relationships, social networks, collaboration graphs, kinship, disease transmission, and sexual relationships. These networks are often visualized through sociograms in which nodes are represented as points and ties are represented as lines. These visualizations provide a means of qualitatively assessing networks by varying the visual representation of their nodes and edges to reflect attributes of interest.Social network analysis has emerged as a key technique in modern sociology. It has also gained significant popularity in the following - anthropology, biology, demography, communication studies, economics, geography, history, information science, organizational studies, political science, public health, social psychology, development studies, sociolinguistics, and computer science and is now commonly available as a consumer tool (see the list of SNA software).

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  1. cianfa72

    Write Down Loop-Impedance Matrix for Current-Controlled Current Sources

    TL;DR Summary: How to write down the loop-impedance matrix in case of Current-Controlled Current Sources Hi, as in the following linear network, I would like to write down the loop-impedance matrix for it where there is a CCCS ##2i_1## source. The starting point is the network elements...
  2. cianfa72

    About the existence and uniqueness of electrical network solutions

    Hi, I've a question about a proof found in the book Applied Graph Theory from Wai-Kai Chen. My point is that basis circuit matrix B and basis cut matrix Q employed in the proof actually refer to two different networks. B should be the basic circuit matrix of the initial network with current...
  3. T

    Superposition Principle for two Voltage Sources (confusions about....)

    I have a question about natural limitations when the superposition principle for circuits is applicable. Possibly there is a quite elementary reason why the problem I'm going to present next fails, but up to now I haven't a precise reason why that's exactly the case. Could somebody help...
  4. R

    Ladder-like bandpass filter theoretical analysis problem

    I consider the band-pass filter of the following configuration (the ##u_m## is a voltage controlled voltage source): The transfer function is $$K_1(p)=\hat{U}_o(p) = \frac{p}{RC(p+1/RC)^2} = \frac{\omega_c p}{(p+\omega_c)^2}, \quad \omega_c=\frac{1}{RC}.\qquad (1)$$ Now I connect ##n## such...
  5. Eucliwood

    Calculating Resistance at Multiple Points in a Resistor Network

    Problem Statement: Finding the resistance when probed at point bc, cd and da Relevant Equations: Series and Parallel resistance equation derived from kirchhoff's law with application of ohm's law I genuinely don't know what to do on this one. The example our professor made isn't exactly clear...
  6. F

    Edge Data Center Size Cost Estimation in Bakersfield, CA

    I want to do a cost estimation for an edge data center in Bakersfield, California. I don't know how big should the center be and i do not know how i can view the data traffic. Can anyone help?
  7. H

    Calculating Resistance - Electrical Circuits & Networks

    Hello! I've took a course about Electrical circuits and Networks at the university, and i found out a problem which is uploaded by my professor, and i think he made a mistake! this is the solution i think that the equivalent resistances are wrong (beside Rab), for example if you look at...
  8. lucasLima

    Help calculating the voltage in a capacitor when t->infinite

    Hello Everyone! So, I need to calculate the voltage in the capacitor, let's call it Vc(t). For t=0- I know that there is no current in the capacitor. Did some calculations and I've found that Vc(0)=6v. Now i need to know Vc(infinite) But when the switch key is opened and the time goes to...
  9. anorlunda

    Insights AC Power Analysis – Part 2, Network Analysis - Comments

    anorlunda submitted a new PF Insights post AC Power Analysis – Part 2, Network Analysis Continue reading the Original PF Insights Post.
  10. P

    Help with this network analysis question

    given: source voltage =120V voltage across 15 ohm resistor = Va there is a dependent source 2Va and a 30 ohm resistor. I tried applying KVL i.e 120-30I+2Va-Va=0 where Va=15I and got I=2.66A whereas my teacher told me that the answer is 8A. how is it so? Is it some basic knowledge that I have...
  11. S

    How to selfstudy to learn (electronics) network analysis (Thevenin, Norton)?

    I am learning network theorem,my syllabus includes application of kcl,kvl,thevenin and norton theorem,superposition theorem,maximum power transfer I studied it from malvino,its quite good! But lack of solved problems! Actually I am finding difficulty while solving networks with double voltage...
  12. Digitalism

    Smoky 3D complex network analysis that evolves in time

    Does anyone know of any tools/graphs that show relationships in networks in a more "smoky" form that evolves in time? Preferably that correlates with spatial location though not necessarily to a map. This is a "normal" picture and not what I am looking for, rather something for which the...
  13. G

    Find Maximum Power to Resistor R

    Homework Statement Homework Equations Pmax = ((VTh)2)/(4RTh) Rparallel = (R1R2)/(R1 + R2) KCL ΣI = 0 KVL ΣV = 0 The Attempt at a Solution Okay, so to find RTh, I remove all independent sources and set the "terminals" at R to have a 1A current running through them. Since there is a 30kΩ...
  14. G

    Superposition Principle to Solve Circuit

    Homework Statement Homework Equations KVL: ΣV = 0 KCL: ΣI = 0 v = iR The Attempt at a Solution I started by removing the independent current source to leave an open circuit. Then I attempted nodal analysis at nodes v1, v2, and v3: KCL @ v1: (v1 - v2)/10 = v1/40 KCL @ v2: (v2 - v1)/10 -...
  15. G

    Using Superposition and Linearity to Find Current?

    Homework Statement Homework Equations Ohm's Law: v = iR KVL: ∑ V = 0 KCL: ∑ I = 0 Linearity: kiR = kvThe Attempt at a Solution Okay, so to apply superposition, I'm supposed to turn off all independent sources except one. I began by turning off the voltage source, and I then I used KCL to...
  16. G

    Finding Voltages in a Circuit with Nodal Analysis

    Homework Statement Homework Equations KCL: Σi = 0 KVL: Σv = 0 The Attempt at a Solution Using KCL: 15 = (v1)/8 + (v2)/4 Using KVL: (v1) - (v2) = (I2)R + 10 (v1) - (v2) = (I2)2 + 10 (I2) = (v1)/8 (v1) - (v2) = (2)((v1)/8) + 10 (v1) - (v2) = (v1)/4 + 10 Now there are two variables and...
  17. Z

    How Do You Calculate R and C for a Series Impedance of 500∠-36.1° at 10kHz?

    Homework Statement Compute values for R and C such that the total series impedance Z=500\angle(-36.1o) when f=10kHz. Homework Equations ω=2\pif KVL ZC = -j*(1/(ωC)) = 1/(jωC) where j=\sqrt{-1} The Attempt at a Solution Seems like a pretty straightforward problem, I seem to...
  18. V

    Network Analysis: Question on fundamental cutset matrix of a graph

    Homework Statement It's a not specific problem. Just a general question. Suppose, I have a graph and I need to write a fundamental cut set matrix. If I define the cut set orientation by choosing the direction of branch current, does every other cut set have to oriented exactly the same way...
  19. B

    How to solve a Network Analysis

    1. The flow of traffic (in vehicles per hour) through a network of streets is shown below. The diagram shows : 200 and x2 is entering junction 1 and x1 is leaving the junction. Junction 2, 100 and x1 is entering the junction and x3 is leaving the junction. Junction 3, 200 and x4 is leaving...
  20. Q

    Independent current and voltage network analysis

    Homework Statement Theres two current sources and three voltages sources the problem wants to know the power supplied by each current source Homework Equations according to the book the problem can be solved using Kirchoffs current law and kirchhoffs voltage law The answers according...
  21. F

    Easy network analysis question about a problem.

    Homework Statement Thanks for looking/responding! Using node voltage analysis in the circuit, find the current i through the voltage source The Attempt at a Solution How do I know what direction the all the currents are going before I start analyzing each node? I know 2A is going counter...
  22. E

    Mathematica What Is the Name of the Process Used to Analyze Network Structures?

    I've forgotten the word for a process I'm trying to remember. This process is the named after the person who suggested it (iirc) and it's used to determine the structure of and processing within a network (anything, jumbled up wires etc). Determination is performed by observing what data is...
  23. S

    Is the Directed Graph for this Circuit Correct?

    hello there, I've been given a circuit and I am trying to draw a directed graph for it. i drew it out in microcap: [PLAIN]www.compsoc.nuigalway.ie/~filter/question.gif[/URL] im wondering if the graph is correct. i think for some reason the direction of current for I1 in the graph has to...