A New Buffer Setting Method Based on Activity Attributes in Construction Engineering

Liu, De Yin; Chen, Jian Guo; Peng, Wei

doi:10.4028/www.scientific.net/amm.174-177.3274

Cited by 7 publications

(6 citation statements)

References 11 publications

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“…The equipment utilization rate is ND = NG = 0.95. The process durations are TD = 4.33 d, TG = 5.18 d. According to Equations (19)(20)(21)(22), the average speed of the relay network of this project is v = 2.02, vD = 1.12, vG = 1.99. From " v > vG > vD, TG > TD, TG + ( v − vG)TG/vG < TD + (v − vD)TD/vD" yields PD = −0.41, PG = −0.41.…”

Section: Calculation Of Process Relay Potentialmentioning

confidence: 99%

“…Lin et al [20] quantified the uncertainty of each process based on the entropy weight method, and obtained the uncertainty coefficient of each process. Liu et al [21] proposed a buffer size adjustment method which reflects the complexity of engineering schedule networks by structural entropy, which has good accu-racy and effectiveness. Zhang et al [22,23] proposed a critical chain buffer determination algorithm based on the entropy weight method.…”

Section: Introductionmentioning

confidence: 99%

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Research on Buffer Calculation Model of Critical Chain Based on Adjacency Information Entropy

Nie

et al. 2023

Buildings

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In project network planning, the correlation complexity of the processes is not only related to the immediately preceding and following processes, but also closely related to indirect adjacent processes. In the existing relevant studies, many scholars have considered the influence of direct adjacent processes but ignored the influence of indirect adjacent processes. In addition, the three-point time estimation method and Monte Carlo simulation are mostly used in the current research for the estimation of process duration, while less research exists on the estimation of process optimal duration under multi-objective constraints. Therefore, this paper proposes a buffer calculation model of critical chain based on adjacency information entropy. This methodology provides comprehensive consideration of the relationship between cost, quality, safety, environment and process duration, the influence of process’s resource demand intensity, resource constraints and process duration on the buffer size, the influence of the relay potential of mutual cooperation and cross construction between processes, as well as the influence of adjacent complexity of processes on the project construction schedule. The calculation example analysis shows that this method can improve the accuracy of the calculation of process safety time, reduce the influence of the complexity of process adjacency correlation on the project construction schedule, reasonably control the buffer size, and effectively shorten the planned project duration.

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Section: Calculation Of Process Relay Potentialmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Buffer Calculation Model of Critical Chain Based on Adjacency Information Entropy

Nie

et al. 2023

Buildings

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“…According to the scientific literature review carried out in this research for the period 1996-2019, the solution techniques most frequently used to solve the RCPSP with random duration of activities were the Genetic Algorithms [5][6][7][8][9][10][11][12][13][14][15][16] and the Critical Chain Method [17][18][19][20][21][22][23][24][25][26][27][28]. The RCPSP with random duration of activities and stochastic tasks insertion was presented by [29].…”

Section: Resource Constrained Project Scheduling Problem With Random mentioning

confidence: 99%

An optimization model to solve the resource constrained project scheduling problem RCPSP in new product development projects•

Pimiento

Serna

2020

DYNA

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New product development projects (NPDP) face different risks that may affect the scheduling. In this article, the purpose was to develop an optimization model to solve the RCPSP in NPDP and obtain a robust baseline for the project. The proposed model includes three stages: the identification of the project’s risks, an estimation of activities’ duration, and the resolution of an integer linear program. Two versions of the model were designed and compared in order to select the best one. The first version uses a method to estimate the activities’ duration based on the expected value of the impact of the risks and the second version uses a method based on the judgmental risk analysis process. Finally, the two version of the model were applied to a case study and the best version of the model was identified using a robustness indicator that analyses the start times of the baselines generated.

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“…Zhang, Cui, Bie and Chai (2011), identified a high degree of interaction between feed buffer size, service level, uncertainty on activities duration and total project duration. Liu, Chen and Peng (2012) analyzed the resource utilization factor, the network complexity and the risk aversion. Finally, Iranmanesh (2016), designed a density factor which considers scarce resources, location of the tasks on the network, work environment risks, and risks in each activity.…”

Section: Cc/bm Applied To Rcpspmentioning

confidence: 99%

The project scheduling problem with non-deterministic activities duration: A literature review

Pimiento

Serna

2018

JIEM

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Abstract:Purpose: The goal of this article is to provide an extensive literature review of the models and solution procedures proposed by many researchers interested on the Project Scheduling Problem with nondeterministic activities duration.Design/methodology/approach: This paper presents an exhaustive literature review, identifying the existing models where the activities duration were taken as uncertain or random parameters. In order to get published articles since 1996, was employed the Scopus database. The articles were selected on the basis of reviews of abstracts, methodologies, and conclusions. The results were classified according to following characteristics: year of publication, mathematical representation of the activities duration, solution techniques applied, and type of problem solved.Findings: Genetic Algorithms (GA) was pointed out as the main solution technique employed by researchers, and the Resource-Constrained Project Scheduling Problem (RCPSP) as the most studied type of problem. On the other hand, the application of new solution techniques, and the possibility of incorporating traditional methods into new PSP variants was presented as research trends.Originality/value: This literature review contents not only a descriptive analysis of the published articles but also a statistical information section in order to examine the state of the research activity carried out in relation to the Project Scheduling Problem with non-deterministic activities duration.

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A New Buffer Setting Method Based on Activity Attributes in Construction Engineering

Cited by 7 publications

References 11 publications

Research on Buffer Calculation Model of Critical Chain Based on Adjacency Information Entropy

Research on Buffer Calculation Model of Critical Chain Based on Adjacency Information Entropy

An optimization model to solve the resource constrained project scheduling problem RCPSP in new product development projects•

The project scheduling problem with non-deterministic activities duration: A literature review

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