scholarly journals Comparison of PERT/CPM and CCPM Methods in Project Time Management

2021 ◽  
Vol 16 (03) ◽  
pp. 01-20
Author(s):  
Taynara Takami Narita ◽  
Caio Henrique Alberconi ◽  
Fernando De Souza ◽  
Lucas Ikeziri
Keyword(s):  
Project Management ◽  
Time Management ◽  
Completion Time ◽  
Computational Simulation ◽  
Time Estimation ◽  
Project Planning ◽  
Theory Of Constraints ◽  
Performance Variables ◽  
Project Completion ◽  
Critical Chain

Purpose: Evaluate and compare PERT/CPM and Critical Chain Project Management (CCPM) techniques, from the Theory of Constraints (TOC), in relation to indicators of delivery time estimation and reliability in meeting established deadlines. Theoretical framework: The research is based on the time management theory established by the PERT/CPM and CCPM methods. Design/methodology/approach: This work has an experimental character, using a method of computer simulation by applying the Promodel software. A fictitious project environment managed by PERT/CPM and CCPM techniques was modeled in order to evaluate and compare their performances in terms of estimation of, and compliance with, project completion deadlines. Findings: The results obtained showed that the CCPM method proved to be more effective in reducing project completion time and meeting established deadlines. Conversely, the PERT/CPM method increased planned project completion time by 189%. Research, Practical & Social implications: Many managers assume that the best approach to project planning, especially when aiming for short and reliable deadlines, is to allocate margins of safety to each scheduled activity. This research reinforced the already widely held perception of TOC that, due to certain ordinary human behaviors, local optimizations do not guarantee, and usually adversely effect, good global results. Originality/value: There is a lack of research comparing PERT/CPM and CCPM techniques through modeling and computer simulations of project environments subjected to certain degrees of uncertainty, particularly in terms of performance variables such as those studied here. The results of this research, therefore, address this opportunity, bringing to light comparative scenarios and explanations for the different behaviors observed. Keywords: Computational Simulation; Project Management; Goldratt; Critical Chain; CCPM; PERT/CPM.

A Research Study on How Project Management Can Help Improve Lean Six Sigma

2018 ◽  
Vol 9 (4) ◽  
pp. 1-25 ◽  
Author(s):  
Brian J. Galli
Keyword(s):  
Project Management ◽  
Six Sigma ◽  
Time Management ◽  
Cost Reduction ◽  
Research Study ◽  
Lean Six Sigma ◽  
Project Planning ◽  
Project Managers ◽  
Management Tools ◽  
Project Completion

Today, project managers are challenged with improving efficiency and overall productivity while working on certain tasks. They must be flexible and understand how to use tools and methods to improve results. While Lean Six Sigma (LSS) provides an overall data driven process to detect and improve system defects, project management has tools to evaluate and create a defined plan and manage a project. This article examines LSS alongside Project Management. It breaks down Six Sigma's DMAIC process, and shows incorporate both LSS and project management tools. If LSS only focuses on minimizing defects, then time management, cost reduction, and overall project planning must be incorporated to achieve successful project completion. This research demonstrates how that is possible. Finally, the research answers a key question: Can project management benefit LSS?

Offshore Platform Turn Around Using the Critical Chain Project Management Method (CCPM)

2009 ◽  
Author(s):  
Jose Finocchio Junior ◽  
Marcelo Ramos Martins
Keyword(s):  
Project Management ◽  
Critical Path ◽  
Theory Of Constraints ◽  
Structured Interviews ◽  
Oil Platforms ◽  
Qualitative Approaches ◽  
Decision Making Processes ◽  
Critical Chain Project Management ◽  
Management Method ◽  
Critical Chain

The present study discusses the adequacy of the Critical Chain Project Management Method (CCPM) — also known as the Critical Chain Method — for scheduling projects involving shutdowns on oil platforms, as such projects involve decision-making processes under risk conditions. The CCPM is based on the Theory of Constraints and aims at providing more precise and more clearly focused control instruments than those traditionally used in the Critical Path Method (CPM). The CCPM also indicates the best moments to act and where and how the action should be directed. The hypothesis underlying the research is that the CCPM portrays, more adequately than the CPM, the uncertainty that exists in a platform shutdown. This characteristic also makes it possible to draw up a schedule that is both more realistic and more challenging, as it addresses the goal of causing less interruption of production. On the basis of this hypothesis, the two main questions that oriented the entire investigation were: 1) Is the CCPM suitable for scheduling the shutdown of an offshore oil platform and, 2) What advantages might it have over the traditional methods in use? To answer these questions the authors reviewed the existing bibliography on the topic and made direct on-site observations during an actual shutdown. In addition, interviews were held with a number of specialists in the area using qualitative approaches, namely, semi-structured interviews, focus groups, and action research.

scholarly journals Critical Chain Project Scheduling: Do Not Oversimplify

2002 ◽  
Vol 33 (4) ◽  
pp. 48-60 ◽  
Author(s):  
Willy Herroelen ◽  
Roel Leus ◽  
Erik Demeulemeester
Keyword(s):  
Project Management ◽  
Project Scheduling ◽  
Critical Review ◽  
Buffer Management ◽  
Direct Application ◽  
Theory Of Constraints ◽  
Management Literature ◽  
Critical Chain

Critical chain scheduling/Buffer management (CCS/BM)—the direct application of the theory of constraints (TOC) to project management—has received much attention in project management literature. There still is controversy over the merits and pitfalls of the CCS/BM methodology. This paper focuses on the fundamental elements of CCS/BM logic and pinpoints some intricacies that are not commonly referred to in the available literature. The authors’ analysis is based on a critical review of the relevant sources and experimentation with both commercial CCS/BM software and an internally developed CCS/BM-based tool.

Linking the Critical Chain Project Management literature

2019 ◽  
Vol 12 (2) ◽  
pp. 423-443 ◽  
Author(s):  
Octaviano Rojas Luiz ◽  
Fernando Bernardi de Souza ◽  
João Victor Rojas Luiz ◽  
Daniel Jugend
Keyword(s):  
Project Management ◽  
State Of The Art ◽  
Theory Of Constraints ◽  
Central Position ◽  
Content Type ◽  
Research Theme ◽  
Critical Chain Project Management ◽  
Three Stages ◽  
New Research ◽  
Critical Chain

PurposeThe purpose of this paper is to analyze the state of the art in Critical Chain Project Management (CCPM), outlining the CCPM literature to date, in an effort to guide future studies.Design/methodology/approachThe paper is based on a bibliometric analysis using Scopus and Web of Science databases. The authors identified the principal journals, articles and authors regarding the research theme, as well as the authors elaborated co-citation and co-occurrence network maps to support the analysis.FindingsThe authors described five co-citation clusters: Fundamentals of Critical Chain, Scheduling, Operations Research, Multi-project and Network, and General Project Management. The most frequently occurring keywords were: “project management,” “critical chain,” “scheduling” and “theory of constraints.” Observing the distribution, the expression “project management” occupied a central position, connecting two other clusters, represented by the keywords “scheduling” and “critical chain.” The authors proposed an evolutive framework for the CCPM state of the art in three stages, according to the most frequent topics identified: Conceptual, Deepening of Applications and Methodological Maturity.Originality/valueThis research adopts a systematic approach based on bibliometric tools, which allows a more rigorous organization of the literature. Co-citation and keyword co-occurrence maps provide evidence of how the main themes in CCPM relate. Besides, the presented historical framework allows new research in CCPM to be directed to the most recent topics of interest that have gaps to be explored.

scholarly journals Project management in a competitive environment: Interdicting a CPM based project and its implications

2019 ◽  
Author(s):  
Fatih KASIMOGLU ◽  
İbrahim AKGÜN
Keyword(s):  
Project Management ◽  
Completion Time ◽  
Critical Path ◽  
Efficient Solutions ◽  
Optimal Operation ◽  
Network Interdiction ◽  
Mixed Integer ◽  
Competitive Environment ◽  
Project Completion ◽  
Minimum Completion Time

There are two opponents in a classic network interdiction problem, network owner/defender and interdictor/attacker. Each side has enough information about the other’s possible courses of action. While the network user wishes to run the network in an optimal way, the attacker with the limited resources tries to prevent the optimal operation of the network by interdicting the arcs/nodes of the network. In this study, we investigate project management in a competitive environment using a network interdiction approach. We assume that the project owner/manager strives to minimize the completion time of a Critical Path Method (CPM) based project while an opponent attempts to maximize the minimum completion time by inflicting some delays on project activities with available interdiction resources. Considering both discrete and continuous delay times, we develop two bi-level mixed-integer programming models for the interdictor. Using duality, we then convert the bi-level models to standard single-level models, which are solvable through standard optimization packages. We extend these models to find efficient solutions in terms of project completion time and interdiction resources from the interdictor’s perspective. In this respect, we develop an algorithm to find an efficient solution set for the interdictor. Next, from project manager’s standpoint, we discuss the earliest and latest scheduling times of activities in case of interdiction. Finally, we apply the developed techniques in a marketing project aiming at introducing a new product. The findings may enhance a better project management in an environment where an opponent can adversely affect the project management process by delaying some activities.

scholarly journals Application of Fuzzy Expert Systems to Manage the Projects Time in Iranian Gas Refineries

2017 ◽  
Vol 7 (3) ◽  
pp. 1670-1675
Author(s):  
A. Naderpour ◽  
J. M. Sardroud ◽  
M. Mofid
Keyword(s):  
Expert Systems ◽  
Time Management ◽  
Construction Projects ◽  
Critical Path ◽  
Estimation Method ◽  
Time Estimation ◽  
Project Planning ◽  
Weak Point ◽  
Gas Industry ◽  
Fuzzy Expert Systems

The National Iranian Gas Company (NIGC) is one of the top ten gas companies in the gas industry in the Middle East and is comprised of 7 gas refineries. So this company needs to apply the most optimum time management methods to achieve its goals. Custom scheduling calculation of project planning uses the Critical Path Method (CPM) as a tool for Planning Projects activities. CPM is now widely used in planning and managing projects but in spite of its wide application, this method has a critical weak point of not taking into account the uncertainties in scheduling calculation. This article aims to present a precise method based on the application of Fuzzy Expert Systems in order to improve the Time Estimation Method in construction projects and in this regard, reviews the results of the implementation of this method in construction projects of Iranian Gas Refineries. The results show that the proposed method increases the accuracy of time estimation about 7 to 22 percent.

scholarly journals A FAST AND ACCURATE METHOD TO PREDICT RELIABILITY OF PROJECT COMPLETION TIME

2016 ◽  
Vol 23 (1) ◽  
pp. 37-46 ◽  
Author(s):  
Chun-Qing LI ◽  
Guomin ZHANG ◽  
Mahdi HOSSEINIAN
Keyword(s):  
Completion Time ◽  
Construction Projects ◽  
Accurate Method ◽  
Accurate Estimate ◽  
Computational Effort ◽  
Project Planning ◽  
Project Managers ◽  
Computational Time ◽  
Project Completion ◽  
Innovative Solution

To meet the target completion time of a construction project is one of the most important performance indi­cators of project management. This paper proposes a fast and accurate method for evaluating the reliability of project completion time in large construction projects, using reliability theory. The proposed method is developed to overcome the limitations of existing methods, including the inaccuracy of the program evaluation and review technique and the long computational time of the narrow reliability bounds method. The proposed method is established in three main parts: (i) calculating the statistics of paths duration in the network; (ii) truncating insignificant paths of the network; and (iii) proposing an innovative solution to accurate estimate for reliability of project completion time. The effectiveness of the proposed method is evaluated using an example project. It is found that the results of the proposed method on the reliability of completion time are accurate. It is also found that the proposed method significantly reduces the number of analysed network paths and the computational effort. The method proposed here can serve as a fast and accurate tool for project managers and project planners in project planning, re-planning, and project control phases.

scholarly journals Implementation Of Program Evaluation And Review Technique (Pert) To Optimize Shophouse Development Projects

2021 ◽  
Vol 1 (1) ◽  
pp. 117-127
Author(s):  
Irma Ayu Kartini ◽  
Tasya Aspiranti ◽  
Asni Mustika Rani
Keyword(s):  
Program Evaluation ◽  
Project Management ◽  
Developing Country ◽  
Completion Time ◽  
Project Work ◽  
Development Projects ◽  
Work Time ◽  
Construction Company ◽  
Project Completion

Construction development in Indonesia is being intensively carried out as a characteristic that Indonesia is a developing country. CV. X is a construction company that has a project in the form of ten shophouses with three floors. The project is planned to start in August 2020 and be completed in December 2021 or for 68 weeks. The change of seasons becomes an obstacle in the work of the project that causes delays. Progress expected by CV. X in 2 months of project work is 8%, but the reality on the project progress field is only 6%. Therefore, this study aims to optimize existing work time so that the delay can be overcome. The method used in this study is Program Evaluation and Review Technique (PERT) with rainfall as the probability. The results of the study found that the project work time can be optimized by 3% and delays can be overcome because the project completion time becomes 66 weeks. The project is still ongoing, so there is still a possibility of error, therefore effective project management must still be considered. Usually in similar studies the probability of time or cost, while in this study use rainfall as the probability.

scholarly journals ОСНОВНЫЕ ТЕНДЕНЦИИ ИСПОЛЬЗОВАНИЯ ИНСТРУМЕНТОВ ПРОЕКТНОГО МЕНЕДЖМЕНТА В МИРОВОМ ГОСТИНИЧНОМ БИЗНЕСЕ

2018 ◽  
Vol 1 (6(18)) ◽  
pp. 15-20
Author(s):  
Бибосынова Ж. А.
Keyword(s):  
Project Management ◽  
Completion Time ◽  
Hard Rock ◽  
Quality Standards ◽  
Project Managers ◽  
Management Tools ◽  
Project Completion ◽  
Critical Paths ◽  
The Right ◽  
Three Phases

In this article practical aspects of using project management in popular restaurants of different countries are considered. Within the framework of this study, the experience of using the Hard Rock Cafe project management tools is highlighted. It is noted that the management of the project in Hard Rock Cafe includes three phases: planning, setting goals, defining the project and organizing the team; drawing up of a calendar schedule of works; control. Considered the project of opening a new restaurant from Pizza Duono (Italy). It stands out that in this restaurant project managers are in sight, they are responsible for: all necessary activities have been completed in the right sequence and on time; the project did not go beyond the budget; the project would meet the quality standards, etc. The study also examined an example of project caching to change the project completion time from the restaurant Pizza Duono (Italy, Rome). According to the methodology of this restaurant, on each of the critical paths the restaurant must identify one type of activity that can be subjected to crashing.

Sign in / Sign up

Export Citation Format

Share Document