network analysis

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Fig. 59 Network analysis. Network for constructing kitchen extension. (w = weeks).

network analysis or programme evaluation and review technique (PERT)

a method of planning, scheduling and controlling projects involving interrelated but distinct elements of work, or activities. Activities and their interrelationships are depicted in a network of arrowed links representing activities. For example, Fig. 59 shows a simple schematic network for the construction of a kitchen extension, with planned activities and their estimated duration in weeks. Certain activities (like preparing the ground) have to be performed before the next stage of production can be embarked upon (like constructing the shell of the building). The sequential path which takes the least time to complete the project is called the ‘critical path’ (here the route a-b-c-d-e-f, taking 20 weeks) and any delay to these critical activities will delay the project completion. Other activities (like preparing the ground) are non-critical and can be delayed (in this case by up to one week) without delaying the overall project. Such non-critical activities embody an amount of slack time (one week in the example). The total amount of slack time for all non-critical activities shows the extent to which these activities can be delayed before affecting the project completion date.

Network analysis is often applied to large-scale projects in civil engineering and shipbuilding or to major repair or maintenance projects or new product launches. It is used to identify problem areas where bottlenecks may occur and where additional resources may be needed.

References in periodicals archive ?
Starting off with framing their study in the existing literature and theories on multilevel and polycentric forms of governance, the authors demonstrate how network analysis and the relational perspective it represents is not only compatible with, but constitutes a natural extension and formalization of contemporary popular concepts in the field of political and spatial governance.
Table 4: Social Network analysis software tools Product Function Input format Output format Ucinet social Dl, excel Dl,excel,paj network ek,VNA in net analysis and draw visualization Visone visual Many format Many format social network and exploration Gephi Graph Ucinet(.dl) Guess(.gdf) exploration Gephi(.gdf) Gephi(.gefx) and Pajek(.gml) manipulation software Pajek Analysis and .net, .paj, visualization of .dat(UCINET), .ged, large networks .bs, .mac, R Social network R will read any analysis within format data file versatile R Product Function platform Ucinet social Windows network analysis and visualization Visone visual Windows,m social network acos and exploration Gephi Graph Support all exploration usingjava1.
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With over 15-TS/s effective sampling rate, 17.5-ps input rise time, and dual 16-bit, 60-dB dynamic-range inputs, PicoScope 9300 sampling scopes are suitable for applications including signal analysis, timing analysis, testing and design of high-speed digital communications systems, network analysis, semiconductor testing, and research and development.
ERIC Descriptors: Teaching Methods; Interaction; Electronic Learning; Online Courses; Aptitude Treatment Interaction; Mass Media Effects; Mass Media Role; Social Networks; Network Analysis; Literature Reviews; Social Cognition; Distance Education; Constructivism (Learning); Social Psychology

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