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Adnan Enshassi

Bio: Adnan Enshassi is an academic researcher from Islamic University of Gaza. The author has contributed to research in topics: Productivity & Cost estimate. The author has an hindex of 22, co-authored 98 publications receiving 2178 citations. Previous affiliations of Adnan Enshassi include Universiti Tun Hussein Onn Malaysia.


Papers
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Journal ArticleDOI
TL;DR: In this article, a comprehensive literature review was deployed to generate a set of factors believed to affect project performance, and a total of 120 questionnaires were distributed to three key groups of project participants, namely owners, consultants and contractors.
Abstract: Construction projects located in the Gaza Strip, Palestine suffer from many problems and complex issues. Consequently, the objective of this paper is to identify the factors affecting the performance of local construction projects; and to elicit perceptions of their relative importance. A comprehensive literature review was deployed to generate a set of factors believed to affect project performance. A total of 120 questionnaires were distributed to 3 key groups of project participants; namely owners, consultants and contractors. The survey findings indicate that all 3 groups agree that the most important factors affecting project performance are: delays because of borders/roads closure leading to materials shortage; unavailability of resources; low level of project leadership skills; escalation of material prices; unavailability of highly experienced and qualified personnel; and poor quality of available equipment and raw materials. Based on these findings, the paper recommends that: 1) project ...

368 citations

Journal ArticleDOI
TL;DR: In this paper, the authors identify factors affecting labour productivity within building projects, and rank these factors according to their relative importance from a contractor's viewpoint, based on a survey of 45 factors considered in a survey.
Abstract: Productivity remains an intriguing subject and a dominant issue in the construction sector, promising cost savings and efficient usage of resources. Productivity is one of the most important issues in both developed and developing countries. The developed countries are aware of the importance of economic growth and social welfare. The developing countries which face unemployment problems, inflation and resource scarcity seek to utilise resources and in such a way to achieve economic growth and improve citizens’ lives. Productivity is an issue of particular importance to projects located within the Gaza Strip, as it is considered a newly‐developed area, and a huge number of projects have been planned for the near future. The aim of this research is to identify factors affecting labour productivity within building projects, and to rank these factors according to their relative importance from a contractor's viewpoint. The analysis of 45 factors considered in a survey indicates that the main factors...

279 citations

Journal ArticleDOI
TL;DR: In this paper, the authors assess factors leading to time overruns (delays) and cost overruns in construction projects in the Gaza Strip and compare the relative perceptions of contractors, consultants and owners.
Abstract: Purpose – Delays and cost overruns are evidently frequent problems in the construction industries of many developed and developing countries. The purpose of this paper is to assess factors leading to time overruns (delays) and cost overruns in construction projects in the Gaza Strip. Since there appear to be additional special contributors to delays here, the relative perceptions of contractors, consultants and owners are compared, based on a listing of causal factors derived from previous studies elsewhere, together with other factors arising from special conditions in the Gaza Strip.Design/methodology/approach – A survey of a randomly selected samples yielded responses from 66 contractors, 27 consultants, and 31 owners. The survey included 110 delay factors/causes which were grouped into 12 major groups. The same survey also included 42 cost overrun factors. The level of importance of the delays and cost overrun factors were measured and ranked by their importance indexes, according to the perspectives ...

248 citations

01 Jan 2006
TL;DR: In this paper, the main causes of business failure are delay in collecting debt from clients, border closure, heavy dependence on bank loans and payment of high interest on these loans, lack of capital, absence of industry regulations, low pro fit margin due to high competition, awarding contracts by client to the lowest bidder, and lack of experience in contract management.
Abstract: 2 Abstract : The construction industry has unique char acteristics that sharply distinguish it from other sectors of the economy. It is fra gmented, very sensitive to the economic cycles and political environment, and has a significantly high rate of business failure. Business failure, collaps e and bankruptcy are common terms in the industry due to the many risks inherited in how the industry operates. Throughout the world, the relative ease of entry gives rise to a large number of contracting firms competing fiercely in the market exposing ma ny of them to business failure, Palestine is no exception. The objectives of this paper are to report on a research study which aims at exploring the causes of contractor's business failure in Palestine, and investigating their severity from the contractor's point of view. The study's results shows that the main causes of business failure are delay in collecting debt from clients (do nors), border closure, heavy dependence on bank loans and payment of high interest on these lo ans, lack of capital, absence of industry regulations, low pro fit margin due to high competition, awarding contracts by client to the lowest bidder, and lack of experience in contract management. Based on these f indings, recommendations to the Palestinian National Authority (PNA) and local contractors are presented in this paper.

120 citations

Journal ArticleDOI
TL;DR: In this paper, the causes of variation orders in construction process in Gaza Strip were investigated through questionnaire survey of 36 classified construction companies, 25 consultants and 15 owners, which identified the top ten most important factors that include lack of materials and equipment spare parts due to closure, change in design by consultant, lack of consultant's knowledge of available materials, errors and omission in design, conflicts between contract documents, owner's financial problems, and lack of coordination among pro...
Abstract: The maximum project performance would be achieved if the work invariably flows smoothly within time limits and anticipated budget. Variation orders result in time delay, cost overrun, quality defects, and other negative impacts. This is common in construction projects in Gaza Strip. The main objective of this study was to analyze the causes of variation orders in construction projects in Gaza Strip. The causes of variation orders in construction process in Gaza Strip were investigated through questionnaire survey of 36 classified construction companies, 25 consultants and 15 owners. 64 causes of variation orders were identified from literature review. The study results identified the top ten most important factors that include lack of materials and equipment spare parts due to closure, change in design by consultant, lack of consultant's knowledge of available materials, errors and omission in design, conflicts between contract documents, owner's financial problems, lack of coordination among pro...

62 citations


Cited by
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Journal Article
TL;DR: Veblen's analysis of the U.S. economy has been claimed and rejected both by sociologists and economists as being one of theirs as mentioned in this paper, but it has enduring value today.
Abstract: Veblen has been claimed and rejected both by sociologists and economists as being one of theirs. He enriched and attacked both disciplines, as he did so many others: philosophy, history, social psychology, politics, and linguistics. Because he took all knowledge as necessary and relevant to adequate understanding, Veblen was a holistic analyst of the social process. First published in 1904, this classic analysis of the U.S. economy has enduring value today. In it, Veblen posited a theory of business fluctuations and economic growth which included chronic depression and inflation. He predicted the socioeconomic changes that would occur as a result: militarism, imperialism, fascism, consumerism, and the development of the mass media as well as the corporate bureaucracy. Douglas Dowd's introduction places the volume within the traditions of both macroeconomics and microeconomics, tracing Veblen's place among social thinkers, and the place of this volume in the body of his work.

1,047 citations

Journal Article
TL;DR: The purpose and functions of the Highway Research Board's Committee on Conduct of Research are set forth, and papers sponsored by the committee and presented at the Annual Meetings of the highway Research Board are mentioned.
Abstract: The purpose and functions of the Highway Research Board's Committee on Conduct of Research are set forth, and papers sponsored by the Committee and presented at the Annual Meetings of the Highway Research Board are mentioned. The Committee, which seeks to improve the quality and effectiveness of research, serves as a forum for the exhange of ideas and the delineation of the problems associated with the various methods of organizing and administering research programs, the consideration of project design and instrumentation, and the application of research findings in the transportation field. The Committee has sponsored Annual Meeting sessions (in 1969, 1973, and 1974) on various aspects (selection, design, and supervision of projects as well as the implementation of results and evaluation of the benefits) of research management. Papers presented at the 1969 sessions were published in Highway Research Record 338. Eight papers presented at the 1973 sessions are included in this publication.

795 citations

Journal ArticleDOI
TL;DR: Concept of the Corporation as mentioned in this paper was the first study of the constitution, structure, and internal dynamics of a major business enterprise, focusing on a two-year analysis of the company during the closing years of World War II.
Abstract: Concept of the Corporation was the first study ever of the constitution, structure, and internal dynamics of a major business enterprise. Basing his work on a two-year analysis of the company done during the closing years of World War II, Drucker looks at the General Motors managerial organization from within. He tries to understand what makes the company work so effectively, what its core principles are, and how they contribute to its successes. The themes this volume addresses go far beyond the business corporation, into a consideration of the dynamics of the so-called corporate state itself. When the book initially appeared, General Motors managers rejected it as unfairly critical and antibusiness. Yet, the GM concept of the corporation and its principles of organization later became models for organizations worldwide. Not only businesses, but also government agencies, research laboratories, hospitals, and universities have found in Concept of the Corporation a basis for effective organization and management. Because it offers a fundamental theory of corporate goals, this book is a valuable resource for business professionals and organization analysts. It will also be of interest to students and professionals in economics, public administration, and political science. Professional and technical readers who admire Peter Drucker's work will want to be certain this volume is in their personal library. At a time when everything from the size to the structure of corporations is being questioned, this classic should prove a valuable guide.

421 citations

Journal ArticleDOI
TL;DR: In this article, a comprehensive literature review was deployed to generate a set of factors believed to affect project performance, and a total of 120 questionnaires were distributed to three key groups of project participants, namely owners, consultants and contractors.
Abstract: Construction projects located in the Gaza Strip, Palestine suffer from many problems and complex issues. Consequently, the objective of this paper is to identify the factors affecting the performance of local construction projects; and to elicit perceptions of their relative importance. A comprehensive literature review was deployed to generate a set of factors believed to affect project performance. A total of 120 questionnaires were distributed to 3 key groups of project participants; namely owners, consultants and contractors. The survey findings indicate that all 3 groups agree that the most important factors affecting project performance are: delays because of borders/roads closure leading to materials shortage; unavailability of resources; low level of project leadership skills; escalation of material prices; unavailability of highly experienced and qualified personnel; and poor quality of available equipment and raw materials. Based on these findings, the paper recommends that: 1) project ...

368 citations

01 Jan 1961
TL;DR: The authors argued that cultural customs and motivations, especially the motivation for achievement, are the major catalysts of economic growth and proposed a plan to accelerate economic growth in developing countries by encouraging and supplementing their achievement motives through mobilizing the greater achievement resources of developed countries.
Abstract: Examines the motivation for achievement as a psychological factor that shapes economic development. Refuting arguments based on race, climate, or population growth, the book instead argues for cultural customs and motivations - especially the motivation for achievement - as the major catalysts of economic growth. Considering the Protestant Reformation, the rise of capitalism, parents' influences on sons, and folklore and children's stories as shaping cultural motivations for achievement, the book hypothesizes that a high level of achievement motivation precedes economic growth. This is supported through qualitative analysis of the achievement motive, as well as of other psychological factors - including entrepreneurial behavior and characteristics, and available sources of achievement in past and present highly achieving societies. It is the achievement motive - and not merely the profit motive or the desire for material gain - that has advanced societies economically. Consequently, individuals are not merely products of their environment, as many social scientists have asserted, but also creators of the environment, as they manipulate it in various ways in the search for achievement. Finally, a plan is hypothesized to accelerate economic growth in developing countries, by encouraging and supplementing their achievement motives through mobilizing the greater achievement resources of developed countries. The conclusion is not just that motivations shape economic progress, but that current influences on future people's motivations and values will determine economic growth in the long run. Thus, it is most beneficial for a society to concentrate its resources on creating an environment conducive to entrepreneurship and a strong ideological base for achievement. (CJC)

359 citations