Impacts of concurrency, iteration, design review, and problem complexity on design project lead time and error generation

2012 ◽  
Vol 20 (1) ◽  
pp. 55-67 ◽  
Author(s):  
H Nam Le ◽  
David C Wynn ◽  
P John Clarkson
2014 ◽  
Vol 7 (4) ◽  
pp. 624-637 ◽  
Author(s):  
Carlos Eduardo Yamasaki Sato ◽  
Milton de Freitas Chagas Jr

Purpose – The purpose of this paper is to propose to redefine the concept of project lead time (PLT) to encompass the time between the project initial idea and the moment in which success is being assessed, which can be beyond the project close-out, using whatever criteria is appropriate for the stakeholder at that moment in time. The conventional project life cycle does not count for the long-term effects of the megaproject, which can have a significant impact on its perception of success. Thus the megaproject life cycle should include a significant part of the operational life cycle of the end product or result, and the criteria of success should include the long-term benefits of the project (measured along various years after the delivery of the end product or result). Design/methodology/approach – The paper uses three illustrative cases of megaprojects: Airbus A380, London Heathrow Terminal 5 and London Olympic Games 2012. These megaprojects, despite their problems in achieving objectives of time, cost and quality (the triple constraint), can be viewed as success or failure depending on the performance and benefits of the resulting product/infrastructure analysed over a long period of time after its delivery. Findings – In order to reconcile the usual distinction between project and product life cycle, and the various definitions of success in different moments of the project/product life cycle, the authors propose to redefine the concept of PLT to encompass the time between the project initial idea and the moment in which success is being assessed, beyond the project close-out, using any criteria which is appropriate for the stakeholder at that moment in time. Originality/value – When assessing the success of the megaproject it is important to define the PLT under which success is being assessed. As pointed out earlier, in findings, the authors propose to redefine the concept of PLT to encompass the time between the project initial idea and the moment in which success is being assessed, beyond the project close-out, using any criteria which is appropriate for the stakeholder at that moment in time.


2015 ◽  
Vol 26 (3) ◽  
pp. 429-454 ◽  
Author(s):  
Mario Henrique Mello ◽  
Jan Ola Strandhagen ◽  
Erlend Alfnes

Purpose – ETO supply chains produce high-value products on a project basis. The occurrence of delays is a major problem that impacts the performance of a company and its supply chain. The purpose of this paper is to analyze the cause of delays and to understand the role of coordination to mitigate them. Design/methodology/approach – An in-depth case study was conducted to identify problems that delay a project and to examine such problems from a systemic perspective. Based on data from interviews, group meetings, field observations and documentation, a pattern is proposed to explain the relation between coordination and lead time. Findings – Conceptually, to reduce the project lead time a higher level of concurrency is necessary. However, more concurrency increases the interdependencies between activities, something which demands more coordination effort. Since the coordination mechanisms applied are not appropriate to cope with the increasing coordination effort, a number of problems appear causing reworks and delays which increase the lead time. Research limitations/implications – The main limitation is that the authors are not able to distinguish which particular project characteristic influences the adoption of a specific coordination mechanism. Further research is required to examine the effect of various coordination mechanisms across a higher number of projects. Practical implications – Practitioners can benefit from discussions in this study to comprehend how coordination can improve the delivery performance in ETO supply chains. Originality/value – This study contributes to a better understanding of coordination in ETO supply chains by making sense of problems that delay the project. Matching the coordination mechanisms with the required coordination effort, which is based on the project characteristics, is a way to avoid delays and reduce the lead time.


2020 ◽  
Vol 4 (97) ◽  
pp. 111-118
Author(s):  
LIUDMILA I. ZORINA

Communicative aspects of Russian dialects functioning are insufficiently investigated. The project is aimed at studying a special phenomenon of Russian culture - village speech etiquette. The task, the project is aimed to solve, is to describe the features of communication in the Russian province, the mass of the inhabitants of which still speaks a dialect. The subject of the research is the semantics, structure and functioning of etiquette units in folk speech. In 2019 the project lead published 5 scientific articles and also participated in 6 scientific conferences. During the summer expedition there have been collected and analyzed numerous materials on the dialects of the Vologda region.


Author(s):  
Patricia Kristine Sheridan ◽  
Jason A Foster ◽  
Geoffrey S Frost

All Engineering Science students at the University of Toronto take the cornerstone Praxis Sequence of engineering design courses. In the first course in the sequence, Praxis I, students practice three types of engineering design across three distinct design projects. Previously the final design project had the students first frame and then develop conceptual design solutions for a self-identified challenge. While this project succeeded in providing an appropriate foundational design experience, it failed to fully prepare students for the more complex design experience in Praxis II. The project also failed to ingrain the need for clear and concise engineering communication, and the students’ lack of understanding of detail design inhibited their ability to make practical and realistic design decisions. A revised Product Design project in Praxis I was designed with the primary aims of: (a) pushing students beyond the conceptual design phase of the design process, and (b) simulating a real-world work environment by: (i) increasing the interdependence between student teams and (ii) increasing the students’ perceived value of engineering communication.


Author(s):  
Nabil Mohareb ◽  
Sara Maassarani

Current architecture studios are missing an important phase in the education process, which is constructing the students’ conceptual ideas on a real physical scale. The design-build approach enables the students to test their ideas, theories, material selection, construction methods, environmental constraints, simulation results, level of space functionality and other important aspects when used by real target clients in an existing context. This paper aims to highlight the importance of using the design-build method through discussing a design project case study carried out by the Masters of Architecture design programme students at Beirut Arab University, who have built prototype units for refugees on a 1:1 scale.


2019 ◽  
Vol 6 (1) ◽  
pp. 48-50
Author(s):  
Ikram Uddin

This study will explain the impact of China-Pak Economic Corridor (CPEC) on logistic system of China and Pakistan. This project is estimated investment of US $90 billion, CPEC project is consists of various sub-projects including energy, road, railway and fiber optic cable but major portion will be spent on energy. This project will start from Kashgar port of china to Gwadar port of Pakistan. Transportation is sub-function of logistic that consists of 44% total cost of logistic system and 20% total cost of production of manufacturing and mainly shipping cost and transit/delivery time are critical for logistic system. According to OEC (The Observing Economic Complexity) currently, china is importing crude oil which 13.4% from Persian Gulf. CPEC will china for lead time that will be reduced from 45 days to 10 days and distance from 2500km to 1300km. This new route will help to china for less transit/deliver time and shipping cost in terms of logistic of china. Pakistan’s transportation will also improve through road, railway and fiber optic cabal projects from Karachi-Peshawar it will have speed 160km per hour and with help of pipeline between Gwadar to Nawabshah gas will be transported from Iran. According to (www.cpec.inf.com) Pakistan logistic industry will grow by US $30.77 billion in the end of 2020.


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