Modelling of contractor selection using fuzzy-TOPSIS

Bintoro, Ibayasid; Malani, Rheo; Rihartanto,

doi:10.1109/iceeie.2017.8328778

Cited by 9 publications

(4 citation statements)

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“…In addition to the aforesaid strategic level decisions, several other key decisions can be conveniently optimized at the functional levels like -optimizing manufacturing process [8], vendor and contractor selection [9,11,12].…”

Section: Discussionmentioning

confidence: 99%

Selection of Plant Location for a Steel Project by TOPSIS

Ghose¹

2021

WJAC

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In a complex business environment, the leadership team has to take certain decisions based on several criteria associated with the decision, some of which are quantifiable with real numbers while the remaining may be subjective or qualitative in nature, which may possibly be expressible linguistically or as a subjective comparison, though equally important for the final decision making. Such decision problems are called Multi-Criteria Decision Making (MCDM) problems. There are techniques available to deal with such problems by integrating all the criteria, quantitative or qualitative, in the decision algorithm and arriving at the most suitable alternatives among several choices available, through certain process steps. MCDM problems may be encountered in many areas of business like key project decisions, strategic decisions on inward and outward logistics, marketing decisions, process technology selection, supply chain decisions, marketing strategies, plant layout optimization etc. The major algorithms that can be conveniently applied to crack such decision problems are Analytic Hierarchy Process (AHP), Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) and Weighted Sum Method (WSM). This article will attempt to solve a site selection problem for a Greenfield integrated steel project, considering several key selection criteria and certain alternative locations. For performing this exercise, the article shall use TOPSIS as the algorithm

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Section: Discussionmentioning

confidence: 99%

Selection of Plant Location for a Steel Project by TOPSIS

Ghose¹

2021

WJAC

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“…Selain itu, terdapat tanah dengan tekstur lempung liat berpasir pada titik sampel 9, 16, 31, 44, dan 47. Tanah bertekstur liat memiliki luas permukaan lebih besar dan mampu menampung lebih banyak air dan unsur hara yang tinggi (Bintoro et al, 2017). Selain itu, terdapat hubungan antara kandungan liat di dalam tanah dengan kandungan bahan organik, semakin tinggi kandungan liat maka semakin tinggi bahan organiknya.…”

Section: Tekstur Tanahunclassified

Analisis Spasial Kualitas Tanah untuk Mendukung Sistem Pertanian Presisi di Desa Candikuning, Kecamatan Baturiti, Kabupaten Tabanan

Widhiartana,

Sumiyati,

Yulianti

2023

jbeta

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ABSTRAK Desa Candikuning memiliki kemiringan lereng 0 – 65% dan petani dalam mengelola lahan melalui pemupukan belum memperhatikan kandungan unsur hara dari lahan tersebut. Penilaian kualitas tanah menjadi salah satu upaya meningkatkan pengelolaan dan sistem penggunaan lahan melalui indikator sifat fisik dan kimia tanah. Indikator sifat fisik dan kimia tanah dapat dinilai dengan penerapan pertanian presisi melalui analisis spasial. Penelitian ini dilakukan untuk mengetahui kualitas tanah dan analisis spasial sifat fisik dan kimia tanah, yaitu tekstur tanah, porositas tanah, C-organik, dan N-total di Desa Candikuning. Pelaksanaan penelitian ini dilakukan dengan metode survei dan uji laboratorium untuk menganalisa sifat fisik dan kimia tanah. Metode pengambilan sampel tanah menggunakan grid dengan metode systematic sampling sebanyak 50 sampel, kemudian dilakukan pemetaan menggunakan metode interpolasi inverse distance weighted. Kualitas sifat fisik tanah di Desa Candikuning ditinjau dari tekstur tanah terdiri dari lempung berpasir, pasir berlempung, dan lempung liat berpasir serta porositas tanah memiliki nilai terendah pada titik sampel 17 dengan nilai 34,39%. Adapun kualitas sifat kimia tanah terdapat nilai terendah pada titik sampel 21 dengan nilai C-organik sebesar 1,59% dan N-total sebesar 0,08%. Analisis spasial kualitas sifat fisik dan kimia tanah ditinjau dari tekstur tanah didominasi oleh tekstur lempung berpasir dan pasir berlempung, porositas tanah didominasi oleh nilai 40,01 – 50,00%, C-organik didominasi oleh nilai 3,01 – 5,00% yang masuk dalam kriteria tinggi, dan N-total didominasi oleh nilai 0,21 - 0,50% yang masuk dalam kriteria sedang. ABSTRACT Candikuning Village has a slope of 0 – 65% and farmers in managing the land through fertilization have not paid attention to the nutrient content of the land. Soil quality assessment is an effort to improve land use management and systems through indicators of soil physical and chemical properties. Indicators of soil physical and chemical properties can be assessed by the application of precision agriculture through spatial analysis. This research was conducted to determine soil quality and spatial analysis of soil physical and chemical properties, namely soil texture, soil porosity, C-organic, and N-total in Candikuning Village. The implementation of this research was carried out using survey methods and laboratory tests to analyze the physical and chemical properties of the soil. The soil sampling method uses a grid with a systematic sampling method of 50 samples, then mapping is carried out using the inverse distance weighted interpolation method. The quality of the physical properties of the soil in Candikuning Village in terms of soil texture consisting of sandy loam, loamy sand, and sandy loam and soil porosity has the lowest value at sample point 17 with a value of 34.39%. As for the quality of soil chemical properties, the lowest value was at sample point 21 with an organic C value of 1.59% and a total N of 0.08%. Spatial analysis of the quality of the physical and chemical properties of the soil in terms of soil texture is dominated by sandy loam and loamy sand textures, soil porosity is dominated by values of 40.01 – 50.00%, C-organic is dominated by values of 3.01 – 5.00% which included in the high criteria, and the N-total is dominated by the value of 0.21 - 0.50% which is included in the medium criteria.

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“…Kalite, zaman, finanasal yönler, şartlar ve koşullar, garanti Bintoro, Malani ve Rihartanto (2017) Şirketin deneyimi, yaklaşım ve metodoloji, uzmanların yeterliliği, teklif fiyatı Topçu (2004) Finansal durum, iş yükü, organizasyonel uzmanlık, teklif fiyatı, benzer işler, uzman personel istihdamı Polat (2015) Teklif fiyatı, mali durum, kilit personel sayısı, uzman personel sayısı, araç ve ekipman sayısı, benzer büyüklükte tamamlanan proje sayısı, devam eden proje sayısı, geçmiş projelerdeki işçilik kalitesi, son üç projedeki ölümlü olay sayısı, şirketin inşaat sektöründeki deneyim süresi Morkunaite, Podvezko vd. (2019) Finansal durum, iş yükü, alt yükleniciler, yönetim becerisi, personel yönetimi, risk, itibar…”

Section: Literatür Taramasıunclassified

Non-Price Criteria In Public Tenders For Restoration And A Comparison With Neues Museum Case

kambek¹

2021

Megaron

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Realizing a restoration project is different than new construction projects, however there is no difference between them in a public tender procedure. Contracts are awarded based only on the lowest price criteria in public tenders. Awarding a restoration contract based on lowest price criteria creates low quality. That's why this paper is studying if there are any viable possibilities to involve non-price criteria in public tenders for restoration. The aim of this study is to evaluate the possibilities of using non-price contract award criteria within the scope of the current legislative restrictions in public restoration tenders. Also to seek ways of involving scientific methods for restoration contractor selection. To achieve these goals, comparison, case discovery and consultation methods were used. The possibilities of the legislation are investigated for contract awarding and the legislation in Turkey is compared with the legislation of EU. As a result of this comparison, how the non-price contract award criteria included in both regulations can be used in the restoration tenders in our country has been evaluated. Contract awarding criteria are listed using the Berlin Neues Museum example. The list is compiled hierarchically under the main and sub-criteria and a comparison survey study was done with twenty conservation specialists all with at least ten years of academic experience in the field. Results of the survey evaluated by using the AHP method to determine the weights of criteria. Within the scope of this study, the opinions of experts were taken on the determination of the weights of the contractor selection criteria using the AHP method. Further studies can be done with other stakeholders in a conservation project to see their perspective on contractor selection criteria. For example, employers, users and administrators of the subject can be evaluated using similar methods. Furthermore, mixed expert groups consisting of different stakeholders can be formed and studies can be conducted to determine what the contractor selection criteria can include and how the weights are distributed. The non-price criteria evaluated in this study are limited to those used in the Neues Museum. Since there is no limitation for non-price criteria in legislation, future studies with different criteria can be produced for the use of non-price criteria in heritage field and can be compared with the results here. In general, quantitative criteria are proposed for contractor selection. However, each heritage project is unique. For this reason, the selection criteria of the contractor in heritage projects should include qualitative characteristics compatible with the project. Past experience is not included in the contractor selection criteria in some previous studies. According to the results of our paper, past experience is seen as a very important criterion by experts. It will be appropriate to use past experience quality criterion in contractor selection. However, in the selection of the contractor, the bid price is requi...

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Modelling of contractor selection using fuzzy-TOPSIS

Cited by 9 publications

References 1 publication

Selection of Plant Location for a Steel Project by TOPSIS

Selection of Plant Location for a Steel Project by TOPSIS

Analisis Spasial Kualitas Tanah untuk Mendukung Sistem Pertanian Presisi di Desa Candikuning, Kecamatan Baturiti, Kabupaten Tabanan

Non-Price Criteria In Public Tenders For Restoration And A Comparison With Neues Museum Case

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