CONTRACTOR SELECTION OF CONSTRUCTION IN A COMPETITIVE ENVIRONMENT

Contractor selection is a vital part of the project management cycle and deals with risk and risk management. This paper presents contractors’ assessment and selection based on the multi‐attribute methods in a competitive and risky environment. The model is based on a multi‐attribute evaluation of contractors, the determination of their optimality criterion values according to Hodges‐Lehmann rule. The proposed model could be applied to assessment of construction operations. The attributes of contractor evaluation are selected taking into consideration the interests and goals of the stakeholders as well as factors that influence the process of construction efficiency. The model is based on metric scores. A background and a description of the proposed model are provided and a few key findings from the data analyses are presented.

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Integrated Model for MCDM: Selection Contractor in Malaysian Construction Industry

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.548-549.1587 ◽

2014 ◽

Vol 548-549 ◽

pp. 1587-1595

Author(s):

Waled Alzober ◽

Abdul Razak Yaakub

Keyword(s):

Decision Making ◽

Construction Industry ◽

Construction Projects ◽

Integrated Model ◽

Decision Making Process ◽

Contractor Selection ◽

Second Stage ◽

Proposed Model ◽

Two Stages ◽

Selection Of

A complex or unstructured problem is based on multi criteria not on a single criterion. A contractor selection problem is a multi-criteria problem. A correct decision-making is required for selecting the appropriate contractor for a construction project. Selection of a contractor is a key decision made by clients and the process of selection a contractor has become an important issue in construction projects. Many multi-criteria techniques have been proposed and applied to such problems solution. This paper aims to propose integrated model for MCDM. The integrated model contains two stages. First stage integrates two MCDM methods are AHP and ANN to prepare a shortlist of the best alternatives. Second stage apply statistical model COP to choose the optimum alternative from the best alternatives in a shortlist. Proposed model for tendering system provides automated a decision-making process that reduces the time and manpower requirements for processing tender

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Determination of pedestrian displacement velocity for ground exploration programs

Ingeniería e Investigación ◽

10.15446/ing.investig.v37n2.62092 ◽

2017 ◽

Vol 37 (2) ◽

pp. 34-41

Author(s):

Luis Hernán Ochoa Gutierrez ◽

Orlando Hernandez Pardo ◽

Luis Joel Martinez Martinez

Keyword(s):

Cost Estimation ◽

Physical Meaning ◽

Real Data ◽

Velocity Estimation ◽

Displacement Velocity ◽

Clear Physical Meaning ◽

Proposed Model ◽

Sampling Points ◽

Selection Of

In Engineering and Geophysics field exploration, uncertainty for determination of the velocity of ground data acquisition due to extreme topographic conditions has been underestimated in the calculation of the displacement time between stations or sampling points. This lack of reliable models, negatively affects the determination of costs and planning of fieldwork activities. Known models of times and routes of displacement determination such as the “Smaller Cost Routes” are based on the effect of the type of land and the slope. However, these models consider the effect of the slope by means of subjective impedance values which has no a clear physical meaning. Furthermore, the upslope or downslope displacement is not considered to affect the reliability of velocity estimation. In this paper, a model of displacement velocity is proposed taking into account the upslope/downslope factor. The model was determined using real data from a topographical survey along a pipeline of 880 Km extended along terrains with changing climatic and topographic conditions. As a result, the proposed model improves the selection of optimal routes for a reliable time and cost estimation.

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MULTI‐ATTRIBUTE CONTRACTORS RANKING METHOD BY APPLYING ORDERING OF FEASIBLE ALTERNATIVES OF SOLUTIONS IN TERMS OF PREFERABILITY TECHNIQUE / DAUGIATIKSLIS RANGOVŲ PARINKIMO METODAS TAIKANT ĮMANOMŲ SPRENDINIŲ ALTERNATYVŲ RANGAVIMO PRIORITETO POŽIŪRIU BŪDĄ

Technological and Economic Development of Economy ◽

10.3846/1392-8619.2008.14.224-239 ◽

2008 ◽

Vol 14 (2) ◽

pp. 224-239 ◽

Cited By ~ 91

Author(s):

Zenonas Turskis

Keyword(s):

Construction Industry ◽

Quantitative Data ◽

General Information ◽

Ranking Method ◽

Contractor Selection ◽

Qualitative And Quantitative ◽

Proposed Model ◽

Verbal Data ◽

Management Cycle ◽

Bidding Process

Contractor evaluation is a vital part of the project management cycle and deals with risk and risk management. One of the most important phases in the construction industry is the bidding process. In order to select the most appropriate contractor for the project and prepare the most realistic and accurate bid proposal, stakeholders have to know all financial, technical and general information about these contractors. The information can be determined as qualitative, quantitative or verbal data. This paper presents the multi‐attribute contractors ranking method bay applying Ordering of feasible alternatives of solutions in terms of preferability technique. This method allows dealing with qualitative and quantitative data as well as with data expressed in words (verbal data). Finally, an illustrative example of contractor selection is used to demonstrate the feasibility and practicability of the proposed model. Santrauka Rangovų vertinimas – gyvybiškai svarbi projekto vadybos ciklo dalis, susijusi su rizika ir rizikos valdymu. Viena svarbiausių projekto įgyvendinimo dalių – kainos nustatymas konkurso tvarka. Investuotojai siekia pasirinkti geriausiai jų tikslus atitinkantį rangovą, realiausią ir tiksliausią kainos pasiūlymą. Tam reikia turėti išsamios informacijos apie finansinę rangovo būklę, techninį pasirengimą ir kvalifikaciją. Straipsnyje aprašomas daugiatikslis rangovų parinkimas taikant įmanomų sprendinių alternatyvų rangavimo prioriteto požiūriu metodą. Šio būdo sprendimų priėmimo matricos informacija gali būti aprašoma kokybiniais, kiekybiniais ir verbaliniais (žodžiais reiškiamais) duomenimis. Pateiktas straipsnio pabaigoje rangovų parinkimo pavyzdys parodo šio modelio taikymo tikslingumą ir praktiškumą.

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Systematic procedure for the determination of the nature of the solutes prior to the selection of the mobile phase parameters for optimization of reversed-phase ion-pair chromatographic separations

Journal of Chromatography A ◽

10.1016/s0021-9673(01)84371-5 ◽

1989 ◽

Vol 478 (1) ◽

pp. 21-38 ◽

Cited By ~ 1

Author(s):

G Low

Keyword(s):

Mobile Phase ◽

Reversed Phase ◽

Ion Pair ◽

Chromatographic Separations ◽

Systematic Procedure ◽

Selection Of

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Tire Treadwear — A Comprehensive Evaluation of the Factors: Generic Type, Aspect Ratio, Tread Pattern, and Tread Composition Part I: Introduction and Details on the Organization of the Program

Tire Science and Technology ◽

10.2346/1.2148774 ◽

1986 ◽

Vol 14 (4) ◽

pp. 201-218 ◽

Cited By ~ 3

Author(s):

A. G. Veith

Keyword(s):

Aspect Ratio ◽

Comprehensive Evaluation ◽

Test Method ◽

Interactive Effects ◽

Data Analyses ◽

Main Effect ◽

Systematic Determination ◽

Relationship Of ◽

The Relationship

Abstract This four-part series of papers addresses the problem of systematic determination of the influence of several tire factors on tire treadwear. Both the main effect of each factor and some of their interactive effects are included. The program was also structured to evaluate the influence of some external-to-tire conditions on the relationship of tire factors to treadwear. Part I describes the experimental design used to evaluate the effects on treadwear of generic tire type, aspect ratio, tread pattern (groove or void level), type of pattern (straight rib or block), and tread compound. Construction procedures and precautions used to obtain a valid and functional test method are included. Two guiding principles to be used in the data analyses of Parts II and III are discussed. These are the fractional groove and void concept, to characterize tread pattern geometry, and a demonstration of the equivalence of wear rate for identical compounds on whole tread or multi-section tread tires.

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DETERMINING THE DESALINATION UNIT COMPOSITION FOR COSTAL AREAS AND SMALL ISLANDS USE ANALYTIC HIERARCHY PROCESS

Jurnal Rekayasa Lingkungan ◽

10.29122/jrl.v9i1.1986 ◽

2017 ◽

Vol 9 (1) ◽

Author(s):

Imam Setiadi ◽

Dinda Rita K. Hartaja

Keyword(s):

Analytic Hierarchy Process ◽

Energy Demand ◽

Pairwise Comparison ◽

Small Islands ◽

Ahp Method ◽

Analytic Hierarchy ◽

Comparison Research ◽

Hierarchy Process ◽

Selection Of

Selection of the appropriate composition desalination units can be done with a variety of method approaches, one of the method is the Analytic Hierarchy Process. In determining the desalination unit with AHP method to consider is setting a goal, an alternative criteria and pairwise comparison. Research for the determination of the exact composition of the desalination unit in order to achieve sustainable drinking water suppy in coastal areas and small islands has been conducted. The results of the study are as follows, the energy demand of 50.83%, operator costs of 26.64%, maintenance costs of 14.13% and chemical requirement 8.4%. For an alternative composition desalination unit of RO 10 m3 / day is the best alternative composition with value of 59.61%, the composition of the next alternative is RO 20 m3/ day of 30.40% and the last alternative of the desalination unit composition is RO 120 m3/ day of 09.99%.Key words : Desalination, Mukti Stage Flash Composition, AHP

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