نتایج جستجو برای: pert network
تعداد نتایج: 672662 فیلتر نتایج به سال:
Suppose the mental processes required for performing a task are partially ordered. so that some pairs of processes are sequential and some are concurrent. Then they <:an be represented in a directed acyclic network. a PERT network. Suppose the duration or each proc:ess is a nonneptive random variable. Suppose two experimental factors are available. each selectively prolonpns a dill'erent proc:e...
AIM Because of increasing awareness of variations in the use of pancreatic exocrine replacement therapy, the Australasian Pancreatic Club decided it was timely to re-review the literature and create new Australasian guidelines for the management of pancreatic exocrine insufficiency (PEI). METHODS A working party of expert clinicians was convened and initially determined that by dividing the t...
We introduce an extension to an architecture-independent tool (VISTA) for creating displays of cognitive model behavior, the Categorical Data Display (CaDaDis). Our display offers several views of categorical data. It includes a standard Pert Chart showing tasks by category (or resource), a Nonstandard Pert Chart that shows the temporal dependencies, and a Gantt chart that helps show occurrence...
In a PERT network interdiction game one player tries to get a project, represented as a PERT graph, finished as quickly as possible by allocating resources, expediting the project’s tasks and choosing between different technologies to use. At the same time a second player aims to maximally delay the project’s completion date by carefully choosing which tasks to disrupt. We develop a novel conti...
Phenol emulsion reassociation technique (PERT) greatly enhances the rate of DNA hybridization in solution over typical hybridization conditions (1) and has successfully been used to accelerate competitive DNA reassociation for performing subtraction based genomic cloning (2-5). PERT is accomplished through the establishment and maintenance of a phenol emulsion, typically by mechanical vortexing...
In order to have better insight of project characteristics, different kinds of fuzzy analysis for project networks have been recently proposed, most of which consider activities duration as the main and only source of imprecision and vagueness, but as it is usually experienced in real projects, the structure of the network is also subject to changes. In this paper we consider three types of i...
The classical PERT approach uses the path with the largest expected duration as the critical path to estimate the probability of completing a network by a given deadline. However, in general, such a path is not the most critical path (MCP) and does not have the smallest estimate for the probability of completion time. The main idea of this paper is derived from the domination structure between ...
The relevance of research. Authentication is the process confirming authenticity an object or subject interaction in information network by a presented identifier. Usually only one factor used. However, most security incidents occur due to use factor. easiest way create extra layer for accounts two-factor authentication using 2FA programs. In this case, additional step occurs, which increases u...
More than half a century after the debut of CPM and PERT, we still lack a project scheduling system with calibrated and validated distributions and without requiring complex user input. Modern decision support systems (DSS) for project management are more sophisticated and comprehensive than PERT/CPM. Nonetheless, in terms of stochastic analysis, they show insufficient progress. PERT 21 offers ...
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