scholarly journals Project Maintenance Effort Optimization Based on Flexible JDP Model for OSS Fault Big Data

2019 ◽  
Vol 5 (1) ◽  
pp. 66-75
Author(s):  
Yoshinobu Tamura ◽  
Shigeru Yamada
Keyword(s):  
Big Data ◽  
Project Management ◽  
Diffusion Process ◽  
Open Source Software ◽  
Cost Optimization ◽  
Jump Diffusion ◽  
Optimization Method ◽  
Project Managers ◽  
Operation Performance ◽  
Maintenance Time

We focus on double irregular fluctuations under jump in the operation performance of open source software (OSS). Then, this paper proposes the method of cost optimization based on flexible jump diffusion process (JDP) model in order to consider several noisy cases for maintenance effort in the OSS operation with version upgrade. In particular, we discuss a method of effort optimization based on the flexible JDP model with the unexpected irregular continuous fluctuation in version upgrade for OSS projects. The proposed method will be useful for the OSS project managers to decide the optimal version upgrade and maintenance time of OSS under the OSS project management. Furthermore, we show several analysis examples of the optimization method considering the properties of version upgrade under OSS projects.

Productivity Assessment Based on Jump Diffusion Model Considering the Effort Management for OSS Project

2019 ◽  
Vol 26 (05) ◽  
pp. 1950022 ◽  
Author(s):  
Yoshinobu Tamura ◽  
Hironobu Sone ◽  
Shigeru Yamada
Keyword(s):  
Project Management ◽  
Diffusion Process ◽  
Process Model ◽  
Jump Diffusion ◽  
Equation Model ◽  
Operation Performance ◽  
Jump Diffusion Process ◽  
Jump Diffusion Model ◽  
Productivity Assessment

Various open source software (OSS) projects are in action around the world. Many OSS are developed and maintained under these OSS projects. Considering the characteristics of OSS, the operation performance of OSS development will take an irregular fluctuation in the long term of operation, because several developers and many users are closely related to the maintenance of OSS. This paper focuses on the irregular fluctuation of the operation performance of OSS. We apply the jump diffusion process model to the noisy cases in the operation of OSS. In particular, the maintenance effort is estimated by the stochastic differential equation model in terms of OSS project management. Moreover, we discuss the method of maintenance effort management based on jump diffusion process model considering the irregular fluctuation of performance for OSS projects. In particular, we propose the method of productivity assessment based on the proposed jump diffusion models. Thereby, it is helpful for the OSS development managers to understand the effort status of OSS from the standpoint of OSS project management. Also, we analyze actual data to show numerical examples of the proposed method considering the characteristics of OSS projects.

Flexible Jump Diffusion Process Models for Open Source Project with Application to the Optimal Maintenance Problem

2020 ◽  
Vol 27 (06) ◽  
pp. 2050020
Author(s):  
Yoshinobu Tamura ◽  
Hironobu Sone ◽  
Shigeru Yamada
Keyword(s):  
Diffusion Process ◽  
Open Source ◽  
Process Model ◽  
Maintenance Phase ◽  
Jump Diffusion ◽  
Project Managers ◽  
Process Models ◽  
Operation Performance ◽  
Jump Diffusion Process ◽  
Optimal Maintenance

The operation of open source software (OSS) has a complex maintenance phase. This paper focuses on several irregular fluctuation in the operation performance of OSS. We apply a flexible jump diffusion process model to several noisy cases in the operation of OSS associated with version upgrade. In particular, we discuss a method of maintenance effort management based on the flexible jump diffusion process model considering the irregular fluctuation in version upgrade performance for OSS projects. Moreover, this paper proposes the optimal maintenance problems based on our flexible jump diffusion process models. Then, it will be useful for the OSS project managers to understand the effort status and the optimal maintenance times with version upgrade of OSS from the standpoint of OSS project management. Moreover, we analyze actual data to show numerical examples of our model and the proposed optimal maintenance problems considering the characteristics with version upgrade of OSS projects.

Multi-Dimensional Software Tool for OSS Project Management Considering Cloud with Big Data

2018 ◽  
Vol 25 (03) ◽  
pp. 1850014 ◽  
Author(s):  
Yoshinobu Tamura ◽  
Shigeru Yamada
Keyword(s):  
Big Data ◽  
Software Maintenance ◽  
Cost Optimization ◽  
Three Dimensional ◽  
Software Tool ◽  
Assessment Tools ◽  
Equation Modeling ◽  
Software Cost ◽  
Software Optimization ◽  
Maintenance Time

We discuss a method of software dependability assessment based on stochastic differential equation modeling in order to consider the interesting factors of the numbers of components, cloud applications and users. Then, we consider the determination of an optimum software maintenance time, minimizing the total expected software cost. In particular, we develop the three-dimensional AIR application for reliability and cost optimization analyses based on the proposed method. Moreover, the three-dimensional application based on NW.js, known as the latest technology, is developed in this paper. Furthermore, we show several numerical examples of the developed application software to evaluate the performance of software optimization and reliability assessment tools for the big data on cloud computing.

scholarly journals Dependability Analysis Tool Based on Multi-Dimensional Stochastic Noisy Model for Cloud Computing with Big Data

2017 ◽  
Vol 2 (4) ◽  
pp. 273-287 ◽  
Author(s):  
Yoshinobu Tamura ◽  
Shigeru Yamada
Keyword(s):  
Cloud Computing ◽  
Big Data ◽  
Software Maintenance ◽  
Low Cost ◽  
Cost Optimization ◽  
Three Dimensional ◽  
Analysis Tool ◽  
Software Cost ◽  
Maintenance Time ◽  
Dependability Analysis

This paper focuses on a big data on cloud computing environment by using open source software such as Open Stack and Eucalyptus because of the unification management of data and low cost. We propose a new approach to software dependability assessment based on stochastic differential equation modelling and jump diffusion process modelling in order to consider the interesting aspect of the numbers of components, cloud applications, and users. Moreover, we discuss the determination of an optimum software maintenance time minimizing the total expected software cost. In particular, we develop the three-dimensional AIR application for reliability and cost optimization analysis based on the proposed method. Then, we show numerical performance of the developed AIR application to evaluate the method of software reliability assessment for the big data on cloud computing.

Project Expectation Management – A Quality Approach to Customer Satisfaction

2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Karuna Devi Mishra ◽  
Dr. Sudarsanam
Keyword(s):  
Project Management ◽  
Customer Satisfaction ◽  
Project Managers ◽  
Market Place ◽  
Dynamic Approach ◽  
Project Environment ◽  
Project Governance ◽  
Expectation Management ◽  
Management Project ◽  
Quality Approach

This paper investigates the current challenges faced by the project managers in creating realistic expectations of customers in dynamic changing project environment which are created by rapid introduction of new unknowns, as they progress. One might say they are more akin to packing boxes of frogs without a cover, setting each thing right before a new challenge is faced. The difficulties posed by these projects are identified and the literature is reviewed for suitable approaches. Why do projects fail and what more is critical to the success of project? All projects are conceived with a vision to satisfy certain needs of the business. Hence, the beneficiary of these needs become key stakeholder. Appropriate participation of this key stakeholder in steering the project ensures the success of the project. Also businesses are impacted by competition and changing market place resulting in skewed expectation management. Managing expectations enhances the success of the project immensely. Now, goal of the project plays a pivotal role and hence respecting it, is an important task, in project management. Project governance is an important aspect which needs to change according to the requirements and requires a dynamic approach rather than a ‘rule book approach’.

An Analysis of Web-based Document Management and Communication Tools Usage Among Project Managers

2017 ◽  
Vol 8 (1) ◽  
pp. 1-24 ◽  
Author(s):  
Tomislav Rozman ◽  
Tanja Kocjan Stjepanovič ◽  
Andrej Raspor
Keyword(s):  
Project Management ◽  
Management Practice ◽  
Project Managers ◽  
Document Management ◽  
Communication Tools ◽  
Web Based ◽  
Motivation Factors ◽  
Communication Software ◽  
Group Interviews ◽  
Eu Project

The article analyzes modern cloud document management systems and communication tools from the viewpoint of a EU project managers, who lead multidisciplinary, multilingual and international teams. It also explores the types of users who use these tools as well as the motivation factors guiding their choices. The research includes observation within the project group, interviews and semi-structured surveys among 40 EU project managers, who have managed 244 EU projects. The main finding is that a lot of project managers still don't use shared, cloud document system. The biggest obstacle to more efficient usage of existing systems is their un-friendliness, security concerns and lack of skills. Meetings are still perceived as the most efficient channel for distributing and receiving project tasks, but they are closely followed by communication software. Applying the authors' findings to the project management practice can lead to better communication and shared document storage management, which can influence overall effectiveness of project management.

Sign in / Sign up

Export Citation Format

Share Document