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Topic: Network analysis


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In the News (Tue 23 Apr 19)

  
  Social Network Analysis
Social network researchers measure network activity for a node by using the concept of degrees -- the number of direct connections a node has.
The good news is that she plays a powerful role in the network, the bad news is that she is a single point of failure.
Since individuals' networks overlap, peripheral nodes are connected to networks that are not currently mapped.
www.orgnet.com /sna.html   (1221 words)

  
  What is Social Network Analysis?
Network analysis is the study of social relations among a set of actors.
Complete network analysis is where you try to obtain all the relationships among a set of respondents, such as all the friendships among employees of a given company.
A real problem with network analysis in the past has been the inability to test hypotheses statistically, because the data are by their very nature autocorrelated, violating assumptions of independence (random sampling) built-in to most classical statistical tests.
www.analytictech.com /networks/whatis.htm   (622 words)

  
 Network Analysis / Critical Path Method (CPM) - Office of Facilities Management   (Site not responding. Last check: 2007-10-26)
This network diagram is described as a standard activity-on-node network of events and is generally developed using the technique set forth in the current AGC publication CPM in Construction - A Manual for General Contractors.
Network Numbering:The systematic assignment of identifiers on event nodes is essential for an easily understood and comprehensible network diagram.
CPM Time Analysis on Contract Changes: The affect that changes or delays have on a CPM schedule is determined by a comparison of the schedules before and after the delaying activities are incorporated into the CPM Network.
www.va.gov /facmgt/consulting/networkanalysis.asp   (4407 words)

  
 Microsoft TechNet: Network Analysis and Optimization Techniques
During the network baseline study, the analyst should be familiar with the internetwork architecture and aware of the throughput typically achieved in the particular internetwork architecture.
After the trace analysis data has been saved and the detail trace opened, it is then possible to view the data and locate the low EFT occurrence within the data by cross-mapping the statistical absolute time or hotkey filtering to a low effective throughput event.
Because the transport layer is essentially in place to establish a network channel for data port communication and, at times, to maintain the communication channel in a consistent and reliable state, it is critical to monitor this area through a network baseline process to ensure connectivity.
www.microsoft.com /technet/network/maintain/networka.mspx   (11428 words)

  
 Social Network Analysis
Social network analysis has emerged as a set of methods for the analysis of social structures, methods which are specifically geared towards an investigation of the relational aspects of these structures.
Network analysis (or social network analysis) is a set of mathematical methods used in social psychology, sociology, ethology, and anthropology.
Network analysis is based on the intuitive notion that these patterns are important features of the lives of the individuals who display them.
lrs.ed.uiuc.edu /tse-portal/analysis/social-network-analysis   (1642 words)

  
 Quantitative Methods in Public Administration: Sociometry & Network Analysis
The term network analysis has largely supplanted the earlier term sociometry, but both refer to the analysis of social networks in part utilizing graphical methods.
Path diagrams, not necessarily based on actual path analysis, represent variables or groups as circles, relationships (which may be correlations, communications, formal associations, or other interactions) as arrows, and, often, magnitude of relationship by thickness of the arrow.
Graph theoretic spectra (eigenvalues and eigenvectors allows the researcher to rotate any axis, change any axis, color nodes by categories, and examine the network in 1, 2 and 3-dimensions, and to define new node variables based on eigenvectors and induced partitions, which may be used to examine the network for group structures.
www2.chass.ncsu.edu /garson/pa765/networkanalysis.htm   (1820 words)

  
 Amazon.com: Network Analysis, Architecture and Design, Second Edition (The Morgan Kaufmann Series in Networking): ...   (Site not responding. Last check: 2007-10-26)
Network Analysis, Architecture, and Design, 2e, uses a systems methodology approach to teaching these concepts, which views the network (and the environment it impacts) as part of the larger system, looking at interactions and dependencies between the network and its users, applications, and devices.
Network architecture takes the input from network analysis and provides a high-level view of the network, focusing on the relationships between major functions of the network, such as security, network management, performance and addressing and routing.
Network engineers who throw capacity at the problem with little analysis should read the book to understand the risks associated with this "methodology." As McCabe states, delay may be as important as capacity; and reliability, maintainability, and availability are often more important than overall throughput.
www.amazon.com /Network-Analysis-Architecture-Kaufmann-Networking/dp/1558608877   (1566 words)

  
 Organizational Network Analysis
Network analysis can be an effective diagnostic and planning tool for the development of communities of practice.
Social Network Analysis as a knowledge management practice was advanced by IBM's Institute for Knowledge-Enabled Organizations (IKO) beginning in 2000.
I am privileged to have learned from and to work with Rob Cross and Andrew Parker in their research on social network analysis at the IKO and to enjoy the advice and collegial support of Valdis Krebs and Stephen Borgatti.
www.byeday.net /ona.htm   (582 words)

  
 Network Analysis
Network Analysis or Critical Path Analysis (CPA) or the American “Program, Evaluation and Review Technique” (PERT) is one of the classic methods of planning and controlling the progress of projects.
The next part of the analysis of the network is to find the CRITICAL PATH.
In such a simple network, it is easy to calculate the amount of slack available for each task, but in a complicated network, it is not easy to 'see' which tasks have slack and which have none.
project.mvps.org /networkanalysis.htm   (1527 words)

  
 Network Analysis   (Site not responding. Last check: 2007-10-26)
GTS Network Analysis services are designed to optimize your network's performance by combining front-end design and assessment services.
Network Analysis services are performed in three key phases: project planning, data collection, and data analysis and report documentation.
In this way, the final network analysis presents a comprehensive network performance report that describes the condition of your entire network.
www.gibsontech.com /networkanalysis.asp   (319 words)

  
 Links to Software for Network Analysis
Applied Graph and Network Analysis is a platform-independent freeware application designed for those scientists and researchers who employ specific mathematical treatment of data, such as social network analysis, sociometry or sequential analysis.
This (the sna package for R) is a library of routines for network analysis and visualization; my focus is on statistical analysis of network data, but a number of classical network analysis tools are included as well.
KeyPlayer is a program for identifying an optimal set of nodes in a network for one of two basic purposes: (a) crippling the network by removing key nodes, and (b) selecting which nodes to either keep under surveillance or to try to influence via some kind of intervention.
www.insna.org /INSNA/soft_inf.html   (1764 words)

  
 Neural Network Analysis
Neural networks are systems that are loosely patterned on the human brain, that can learn and discern patterns in real-world conditions where data is incomplete or where the number of variables is vast.
Neural network models were developed for the analysis of solenoid valve current and voltage traces to determine the health of a solenoid.
Trained neural networks were incorporated into an Automated Diagnostic Propulsion System developed at NAS A's Marshall Space Flight Center to analyze the energize and de-energize current and voltage traces of a valve on a propulsion system testbed.
reliability.sandia.gov /Industrial_Engr/Neural_Network_Analysis/neural_network_analysis.html   (339 words)

  
 Network Analysis
Content analysis of speeches and written documents is used to clarify the political ideologies and issue positions of different fractions of the power elite.
For those unfamiliar with the method of network analysis, the basic logic of this approach is quite simple (for an easy to follow introduction, see John Scott, Social Network Analysis: A Handbook).
In more complex forms of network analysis the links among nodes may be directed (e.g., from A to B) and/or they may be given a value other than one (e.g., to measure the number of shared directors or the amount of money transfered).
darkwing.uoregon.edu /~vburris/whorules/network.htm   (684 words)

  
 White Papers- Network General - Application and Network Analysis Solutions
Network management systems separately approach “fault” management, whether something is up or down, from “performance” management, which is a measure of how well something is working.
Given the convergence of risk factors – more applications and traffic, network sprawl and lower levels of institutionalized network knowledge – it is clear that new management approaches and tools for network analysis are required.
Traditional tools and methods – which are oriented toward the “point-in-time” capture and analysis of network data or simple “best effort” monitoring of data – are simply no longer powerful enough to address the complexity of today’s network performance challenges.
www.networkgeneral.com /WhitePapers.aspx   (1550 words)

  
 Network Analysis - Prism Family - WAN Testing - RADCOM
Network Analysis - Prism Family - WAN Testing - RADCOM
In Frame Relay testing, main features include Expert Troubleshooter, a Frame Relay fault finder application; DLCI activity analysis and load, an application that shows the active DLCIs and their current status; user and network analysis and 7 layer protocol decoding; CIR violation testing, as well as monitoring; and User and Network Simulation.
The capability of simultaneously monitoring both the WAN side and the LAN or ATM side of the network, enables users to measure the time it takes for a packet to travel from one side of a network to the other, and to identify problems in a certain area of the network and isolate them.
www.radcom.com /Products.aspx?BoneId=832   (254 words)

  
 Ecosystem Network Analysis
"Ecosystem network analysis" is the rubric applied to a collection of quantitative methods that systematically teases most pertinent information from the full, complicated network description.
A flow network is a snapshot of ecosystem kinetics at some specific time or stage.
A collection of data on 48 sample flow networks.
www.cbl.umces.edu /~ulan/ntwk/network.html   (603 words)

  
 Operative Software Products Network Analysis Software
A network protocol analyzer and trending monitor, ideal as a portable for first time users, expandable and distributed to satisfy the needs of the largest enterprise.
LANforge ICE is able to emulate WAN networks with latency, throughput, and packet degradation.
LANsurveyor is an easy to use tool for network mapping, identifying hardware and software assets, remotely monitoring and managing computers and devices, and planning backup strategy and capacity requirements.
www.operativesoft.com /html/network.htm   (419 words)

  
 Network Computing - Computer Networking, Network Security and Management
Like a surveillance camera for the network, NI's appliance captures and replays traffic for auditing, forensics and troubleshooting.
At our new Application Performance Optimization Immersion Center, you'll find key strategies and analysis on effectively managing and automating applications and operations environments.
Hebrew SeniorLife seeking Network Sever/Analyst in Boston, MA
www.networkcomputing.com   (552 words)

  
 How the NSA does "social network analysis." - By Alexander Dryer - Slate Magazine
In a basic analysis, people are seen as "nodes" and the relationships between them are "links." By studying the links—in the case of the NSA program, telephone calls—it's possible to determine the importance (or "centrality") of each node.
It's not clear whether such analysis could have been performed in advance, when researchers wouldn't have been certain which links were significant connections to another terrorist and which were casual connections to an acquaintance.
Google's PageRank system is based on network theory and the concept of "centrality." Doctors use network analysis to track the spread of HIV.
www.slate.com /id/2141801   (724 words)

  
 Network analysis
Network analysis is the general name given to certain specific techniques which can be used for the planning, management and control of projects.
We will illustrate network analysis with reference to the following example: suppose that we are going to carry out a minor redesign of a product and its associated packaging.
The network diagram we construct is different depending upon whether we are going to use an activity on node or an activity on arc network.
people.brunel.ac.uk /~mastjjb/jeb/or/netanal.html   (1587 words)

  
 Digital Bear Consulting: Home->Resources->Social Network Analysis
Social Network Analysis is the study of the relationship between entities where such entities are people, organizations, resources, tasks and events.
Computational and social network techniques are combined to develop a better understanding of the fundamental principles of organizing, coordinating, managing and destabilizing systems of intelligent adaptive agents (human and artificial) engaged in real tasks at the team, organizational or social level.
Buchanan illustrates social and physical networks with examples ranging from the infamous "six degrees of separation" theories, to the spread of the AIDS virus, to the mapping of the nervous system of the nematode worm.
www.digital-bear.com /cfm/sna.cfm   (1455 words)

  
 IRE Resources: Social Network Analysis
Precise images and measures of network structure are derived from reports of relationships that occurred over a period of 18 months between 1993 and 1995." As part of his research, Moody created a network movie, or flipbook, of the network described in the article.
In this tipsheet, Cohen discusses social network analysis as used in the newsroom, in particular to analyze campaign contributions, gang members and terrorists.
The Washington Post used social network analysis in early 2003 to report on a group of language schools in the Los Angeles area that appeared to be "visa mills" for foreign students.
www.ire.org /sna   (1575 words)

  
 Network Analysis Platform relays real-time health status., Network General Corp.
Network General(tm) is a leading provider of IT management solutions designed to integrate and simplify IT management and troubleshooting across IT domains, assuring the delivery of IT services.
The Network General portfolio consists of innovative software solutions and intelligent appliances that monitor and manage all elements of the IT infrastructure including network devices, applications, and servers, while simultaneously delivering a correlated view of the health of the business service.
Network General's solutions provide IT professionals with an end-to-end correlated view of the performance and availability of critical business services and the underlying network infrastructure.
news.thomasnet.com /fullstory/504811/264   (865 words)

  
 Network Analysis Infrastructure   (Site not responding. Last check: 2007-10-26)
An analysis infrastructure has the objective to operate beyond the means of network measurements, as it is not good enough to create large data silos containing alot of measurement data that is hardly ever been looked at.
A non-real-time analysis assumes staggered data collection and data analysis phase, presumably followed by a phase where the analyzed data be transferred to a central location, and the data collection be restarted.
The analysis infrastructure itself is supported by miscellaneous monitors which collect data, with possibly some local analysis, and results sent to a centralized collector for further analysis and storage.
moat.nlanr.net /NAI   (2409 words)

  
 Network Analyzing - Privacy
Network Analysis products do not collect any information from your system other than the information required for the products successful operation.
It is the policy of Network Analysis to offer free email based technical support to all of our registered and unregistered customers.
Network Analysis will take legal action against any users that are found to be pirating Network Analysis products.
www.networkanalyzing.com /privacy.htm   (645 words)

  
 hutchinson associates Social Network Analysis
Case study of development of knowledge network at the DIA including using organizational network analysis metrics to match people for mentoring.
Social network analysis comprises tools that provide managers with a visual map of the connections among their employees and quantitative data that substantiate the maps and their underlying patterns.
Social Network Analysis as a knowledge management practice was advanced with research by Rob Cross and Andrew Parker at IBM's Institute for Knowledge-Enabled Organizations (IKO) beginning in 2000.
www.byeday.net /sna/index.html   (739 words)

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