scholarly journals SELECTION OF WIRELESS TECHNOLOGY FOR TRACKING CONSTRUCTION MATERIALS USING A FUZZY DECISION MODEL / BELAIDŽIO RYŠIO TECHNOLOGIJŲ ATRANKA STATYBINĖMS MEDŽIAGOMS STEBĖTI, TAIKANT NEAPIBRĖŽTŲJŲ AIBIŲ SPRENDIMO MODELĮ

2012 ◽  
Vol 18 (1) ◽  
pp. 43-59 ◽  
Author(s):  
Shaohua Jiang ◽  
Won-Suk Jang ◽  
Mirosław J. Skibniewski

As the size and scale of construction projects increase, inefficiencies related to the manual operations about field data in current tracking systems are becoming an important issue. While emerging wireless technologies are providing a feasible vision of ubiquitous computing and sensor networks applicable to the large-scale construction industry, it has become even harder to select a suitable technology for tracking construction materials because of the differing functionalities, capabilities, and scope of application of the specific technology. This research proposes a multi-criteria decision-making model that leverages the decision process in choosing various wireless technologies available on the market. To justify the selection of a specific technology, a fuzzy method was adopted to provide an appropriate way to decide among five alternatives (e.g., RFID, GPS, Wi-Fi, Zigbee, and UWB). Fuzzy ranking was obtained from the aggregated fuzzy appropriate index (FAI) based on a person's point of view (optimist, pessimist, or neutral). The results showed that Wi-Fi might be a suitable solution for optimists and neutral persons, but UWB might be the better alternative for pessimists. The results of this research may assist construction engineers in applying reasonable decision-making procedures in a fuzzy environment such as construction sites, and rank the relative importance of the various criteria and alternatives specified in this research. Santrauka Augant statybos projektų mastui, rankinis dabartinių stebejimo sistemų duomenų apdorojimo neefektyvumas tampa svarbia problema. Nors naujos belaidžio ryšio technologijos gali sudaryti galimybę įvesti visur prieinamus kompiuterinius ir jutiklių tinklus, naudojamus plataus masto statybos pramonėje, tampa vis sudėtingiau pasirinkti tinkamas technologijas statybinėms medžiagoms stebėti, nes kiekviena technologija atlieka skirtingas funkcijas, skiriasi jų galimybės ir taikymo apimtis. Šiame tyrime siūlomas daugiakriterinis sprendimų priėmimo modelis, kuris, sprendimų priėmimo procesą pasirenkant rinkoje, siūlomas belaidžio ryšio technologijas išskaido į atskirus lygius. Siekiant pagrįsti tam tikros technologijos pasirinkimą, buvo pritaikytas neapibrežtųjų aibių metodas, pasirenkant geriausią technologiją iš penkių alternatyvų (t. y. RFID, GPS, Wi-Fi, Zigbee ir UWB technologijų). Neapibrežtumo rangas buvo gautas taikant agreguotą neapibrežtumo tinkamumo indeksą (FAI), atsižvelgiant į asmens požiūrį (optimistinis, pesimistinis ar neutralus). Gauti rezultatai parodė, kad Wi-Fi technologija yra tinkama optimistams ir neutraliems asmenims, o UWB technologija būtų geresnė alternatyva pesimistams. Šio tyrimo rezultatai gali padėti statybos inžinieriams priimti pagrįstus sprendimus neapibrėžtoje aplinkoje, tokioje kaip statybos aikštelės, ir suranguoti pagal svarbą įvairius kriterijus bei aptartas šiame tyrime alternatyvas.

2017 ◽  
Vol 7 (1) ◽  
pp. 100
Author(s):  
Wen-Tsung Wu ◽  
Chie-Bein Chen

This study investigates the decision-making issues in the selection of destinations for large-scale exhibitions by the cultural and creative industry. We use the Rubber Duck China Tour by the Dutch artist Florentijn Hofman as an example and adopt the analytic network process technique to evaluate destination options for the exhibition, as well as to explore the impacts of the evaluation of destination feasibilities on exhibition investment. The results show that power, a high benefit-cost ratio, first-tier cities, integration with local communities, and a rich and interesting theme are the top five factors that curators should consider when planning exhibitions. Considering the priority among cities of various tiers, first-tier cities are the most favorable, followed by fourth-tier, third-tier, and second-tier cities. The decision-making model provides curators with a reliable reference for selecting destinations for future exhibitions.


2014 ◽  
Vol 548-549 ◽  
pp. 1587-1595
Author(s):  
Waled Alzober ◽  
Abdul Razak Yaakub

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


2021 ◽  
Vol 40 (3) ◽  
pp. 139-157
Author(s):  
Paula de Souza Michelon ◽  
Rogério João Lunkes ◽  
Antonio Cezar Bornia

This article aimed to highlight the relationships between these characteristics and the use ofcapital budgeting practices. For the selection of articles published on “capital budgeting” it wasused the Proknow-C tool. It was found that the theory-practice gap is both related with the organizationaland managerial characteristics from the practical point of view, but requires a reviewby academicians. Organizations should seek professionals with experience in capital projectsappraisal and who are familiar with and knowledgeable in the use of adequate practices for decision-making. This research contributes by indicating the research gaps that need to be explored by researchers and by trying to identify the difficulties found by managers that interfere in the capital budgeting results. 


2021 ◽  
Vol 57 (9) ◽  
pp. 6220-6229
Author(s):  
Prashant Rai, Dr Arun Kumar ON

As livestock plays a very crucial role in Indian economy. Livestock trading in India is very unstructured. The Buyer can be farmer or Diary farm owner who wants to procure a livestock. In this research the Livestock which is considered is the Murrah buffalo belong to water buffalo (Bubalus bubalis) breed which are mainly kept for milk production. The buyer is available with 8 suppliers which are fulfilling the same criteria of the breed. The Suppliers are divided into two segments, large scale supplier and small scale supplier. The supplier having more than 10 livestock of same breed has been considered large scale supplier, and the supplier having less than or equal to 10 has been considered small scale supplier. As competition is increasing every day the procurement activities are highly important. So, Multi criteria decision making approach has been used. Specifically, Analytic Hierarchy Process has been used for the selection of vendor among the alternatives available. In this research three criteria, seven sub criteria and eight alternatives has been evaluated. All vendors are ranked according to the result obtained from the AHP to aid the decision making. By implementation of AHP we were able to obtain the best fit vendor. AHP is a practical tool used for aiding the decision making when there are too many parameters. In Livestock trading ecosystem this tool will help in decision making


2018 ◽  
Vol 16 (3) ◽  
pp. 80-91 ◽  
Author(s):  
Karina V. Balashova ◽  
Aleksandr M. Batkovskiy ◽  
Pavel A. Kalachikhin ◽  
Elena G. Semenova ◽  
Yury F. Telnov ◽  
...  

The article deals with issues of formalization and elaboration of business strategies. The authors have formulated a hypothesis that there is no universal strategy ensuring maxi¬mum benefit to an enterprise. The choice of a company’s strategy is considered from the point of view of a game-theoretical interpretation as a competition component. The process of engineering a company’s business strategy is presented in the form of a technological network. The study shows the possibility of automating the selection of a strategy by decision-making support systems. The article outlines the problem of classifying enterprise strategies by general features. The structure of a company’s strategy is formalized as a relationship of a set of strategic objectives in the S.M.A.R.T. technique and a set of means to achieve the goals limited by a company’s capabilities. The authors examine the indicator structure for achieving strategic goals. A definition is given to the type and form of a strategy based on the pattern concept. The article defines a methodology for assessing the probability of achieving the strategic goal. A new concept of a fluid strategy has been introduced along with several other variations of business strategies that might be encountered.


Author(s):  
Juliya Dyadyshcheva-Rosovetska

The article is devoted to the study of Panteleimon Kulish's search for a productive model of development of the new Ukrainian literary language and ways of its enrichment, in particular at the expense of the language of folklore as an inexhaustible source. A linguistic and poetic analysis of Panteleimon Kulish's large-scale work "Ukraine: From the Beginning of Ukraine to Khmelnytsky's Father" and its comparison with some elements of the linguopoetics of folk dumas of the classical repertoire are presented. The real problems that arise in P. Kulish’s creative work when he tries to achieve a harmonious combination of authentic folk thought words and expressions and stylized author's innovations are demonstrated. The article shows the difficulties in the artist's selection of colored ethnographically linguistic material needed to create a folklore duma's color. The shortcomings of combining the author's elements with fragments of real dumas within one work of art are revealed. This technique is compared with the approach of Taras Shevchenko, who turned to "stylization" or "improvisation" in the folk spirit (M. Kotsyubynska) and isolated the resulting structures structurally, putting in the mouths of certain characters - the Blind or the Witch. The fundamental difference in the approaches to verbal creativity is differentiated on the one hand by the bearer of the oral-poetic tradition, which is only within the possibilities of Ukrainian folklore, and on the other - by the artist of the XIX century - its user, who perceives the folklore tradition not "from within" but "from outside" and addresses the entire literary heritage - domestic and world, as well as folklore - his own and other peoples. The counterproductiveness of some authorial experiments of P. Kulish on dumas samples is illustrated. Their results cannot be considered satisfactory due to illogicality, low intellectual saturation or from an aesthetic point of view. A somewhat excessive exoticism of the author's innovations has been recorded, which attracts the reader's undue attention to them and distorts his perception of the artistic fabric of the poetic work. The question of the specifics of the experimental text of P. Kulish is formulated. What prevails here is the scientific reconstruction of lost fragments of true dumas, the restoration of time-destroyed parts of the national epic, or the demonstration of the author's creative ability to practice folklore improvisation in a work of art. Depending on the answers, a comprehensive assessment can be made.


Author(s):  
O.A. Tuhai ◽  
◽  
T.V. Vlasenko ◽  

Abstract. The construction industry is exposed to high risks, which cannot be ignored in case of large investments. The choice of a reliable investment and construction project is important for the success of the investor. A reliable choice of investment and construction project requires taking into account many uncertainties for decision-making. The investor has to be aware of the risks related to the implementation of investment and construction projects, as well as the level of involvement of all the uncertainties in the overall risk of investing in a particular project. These factors may be related to the economic environment, the public policy, mood of the social environment, the market, etc. Accordingly, factor-based decision-making is a vital process that should be considered when alternative investment and construction projects are being assessed. As the construction industry is characterized by long investment cycles, it is a dynamic, complex system with uncertain, incomplete data, as a consequence of a fundamental practical problem when applying investment-selection models construction projects are to determine the distribution of uncertainties to calculate the reliability of the projects. More recently, most approaches to pre-selection investment and construction projects have been presented using linguistic estimates instead of numerical values. This article presents a multi-criteria decision-making methodology for analysis and selection of the most reliable investment and construction project under the conditions of risk and uncertainty. This approach is based on the theory of fuzzy sets, which has the advantage of using linguistic estimates and precise for qualitative and quantitative assessments respectively.


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