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...

Temporal planning (TP) is notoriously difficult because it requires to solve a propositional STRIPS planning problem with temporal constraints. In this paper, we propose an efficient strategy for solving TP, which combines, in an innovative way, several well established and studied techniques in AI, OR and constraint programming. Our approach integrates graph planning (a well studied planning p...

This paper deals with the fundamental problem of estimating the distribution function (df) of the duration of the longest path in the stochastic activity network such as PERT network. First a technique is introduced to reduce variance in Conditional Monte Carlo Sampling (CMCS). Second, based on this technique a new procedure is developed for CMCS. Third, a combined approach of simulation and ap...

We develop a multi-objective model for the resource allocation problem in a dynamic PERT network, where the activity durations are exponentially distributed random variables and the new projects are generated according to a Poisson process. This dynamic PERT network is represented as a network of queues, where the service times represent the durations of the corresponding activities and the arr...

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Citation Abbate, Riccardo et al. " Precision thrust cumulant moments at N[superscript 3]LL. " Physical Review D 86.9 (2012). Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story...

This paper presents a hybrid metaheuristic algorithm (HMA) for Multi-Mode Resource-Constrained Project Scheduling Problem (MRCPSP) in PERT networks. A PERT-type project, where activities require resources of various types with random duration, is considered. Each activity can be accomplished in one of several execution modes and each execution mode represents an alternative combination of resou...

ObjectiveUK national guidelines recommend pancreatic enzyme replacement therapy (PERT) in cancer. Over 80% of cancers are unresectable and managed non-surgical units. The aim was to assess variation PERT prescribing, determine factors associated with its use identify potential actions improve prescription rates.DesignRICOCHET a prospective audit malignant pancreatic, peri-ampullary lesions or b...

Earned value management (EVM) is widely used when monitoring and estimating operations related to construction projects. As the scope complexity of projects expand, traditional EVM sometimes ineffective even results in conclusions that are contrary actual situation. Additionally, estimate produced by a deterministic does not account for uncertainty activities involved project. This study propos...

Purpose: Standard dietetic practice in patients undergoing surgery for suspected pancreatic malignancy (SSPM) is unknown. This study aimed to evaluate current United Kingdom (UK) by surveying all hepatopancreaticobiliary (HPB) units. Method: A JotForm.com survey was emailed Each asked submit a single response following multi-disciplinary discussion. Units were questions regarding: their service...