Evaluation of learning management systems using interval valued intuitionistic fuzzy-z numbers

The use of online education tools has increased rapidly with the transition to distance education caused by the pandemic. The obligation to carry out all activities of face-to-face education online made it very important for the tools used in distance education to meet the increasing needs. In line with these needs, radical changes have occurred in the learning management systems used in distance education. Therefore, in this study, it is aimed to determine the features that the systems used in distance education should have and to compare the existing systems according to these features. For this purpose, a novel fuzzy extension, interval valued intuitionistic fuzzy Z-numbers, is defined for modeling uncertainty, and AHP and WASPAS methods using proposed fuzzy numbers are developed to determine the importance of decision criteria and compare alternatives.WOS:0010834495000112-s2.0-85173691458Emerging Sources Citation IndexArticleUluslararası işbirliği ile yapılmayan - HAYIRKasım2023YÖK - 2022-23Eki

Prioritization of public services for digitalization using fuzzy Z-AHP and fuzzy Z-WASPAS

In this paper, public services are analyzed for implementations of Industry 4.0 tools to satisfy citizen expectations. To be able to prioritize public services for digitalization, fuzzy Z-AHP and fuzzy Z-WASPAS are used in the analysis. The decision criteria are determined as reduced cost, fast response, ease of accessibility, reduced service times, increase in the available information and increased quality. After obtaining criteria weights using fuzzy Z-AHP, health care services, waste disposal department, public transportation, information services, social care services, and citizen complaints resolution centers are compared using fuzzy Z-WASPAS that is proposed for the first time in this paper. Results show that health care services have dominant importance for the digitalization among public services.WOS:000604482500002Science Citation Index ExpandedQ2Article; Early AccessUluslararası işbirliği ile yapılmayan - HAYIROcak2021YÖK - 2020-2

A NOVEL RISK EVALUATION APPROACH FOR FREQUENTLY ENCOUNTERED RISKS IN SHIP ENGINE ROOMS

The purpose of this study is to evaluate risks which are frequently encountered in the engine room on-board. In this context, twenty common risks are assessed using the neutrosophic analytic hierarchy process (N-AHP) and trapezoidal fuzzy technique for order preference by similarity to ideal solution (TrF-TOPSIS). In maritime risk evaluation, since it is frequently required the linguistic assessment of decision-makers to achieve a robust risk assessment tool, neutrosophic sets and fuzzy sets are used together in this study. Neutrosophic sets represent real-world problems effectively by considering all aspects of decision-making situations, (i.e. truthiness, indeterminacy, and falsity). Therefore, AHP is integrated with neutrosophic sets to assign weights of risk parameters initially. Then, the encountered risks are prioritized by TrF-TOPSIS. Finally, preventative actions for the risks have been discussed. In conclusion of the study, it is shown that skin exposure to the fuels/oils, exposure to chemicals and exposure to high pressure and temperature liquids are the most important risks through the engine room on-board. This study both emphasizes the importance of preventing damage to crew in the risk assessment of ship engine rooms and aims to increase the level of safety control and minimize the potential environmental impacts of a ship\u27s damage

Determinants of Unemployment Status: Indicating College Majors that reduces the Unemployment Status in Lebanon

Unemployment status is considered one of the divisive economic issues. This paper aims to examine the factors such as age, gender, geographical area, educational level, college major and work experience that affect unemployment status in Lebanon. As well as predicting college majors that reduces unemployment in Lebanon. Using the survey method to collect data, and after refining the questionnaires, a total of 731 answers from different Lebanese areas were selected for this study. This study found that individuals with higher educational levels and higher work experience are set to have higher chances to be employed. Another finding is that males have more opportunities to get hired. With respect to the geographical area, citizens that lives in the capital Beirut, have more chances to enter the labor market. Individuals between the age of 24 and 37 have higher chances to get recruited. By studying the college majors, this study found that individuals that have business management, computer science, art, health, nursing, nutrition and psychology as a college major could guarantee a job opportunity more than individuals with other majors. The findings would help students in choosing a college major that helps them find a job opportunity after graduating

SUSTAINABILITY ASSESSMENT OF TEXTILE AND APPAREL SECTOR: A REVIEW OF CURRENT APPROACHES AND TOOLS

The purpose of this study is to provide an overview of sustainability evaluation techniques in textile and apparel sector. The review study summarizes the different dimension covered, weightage, number of indicators involved, and highlight the weakness and strength of the previous developed sustainability assessment methods in the textile industry. The analysis revealed that majority of the product-related assessment methods prioritised environmental factors only, while all the presentations reviewed in this category neglected triple bottom line (TBL) in their assessment approach. Nevertheless, there is still a need to focus more on integrated assessment tools to fulfil the TBL goals. Environmental assessment methods are comparably advanced and standardized in the field of textile and apparel. However, from the uncertainty’s perspectives, only integrated assessment tools considered fuzziness, grey and stochastic ambiguities in some of their methods, whereas product related assessment tools studied, ignored fuzziness and grey uncertainties completely. This current study offers comprehensive details of product related assessment and integrated assessment methods that was published from 2010 to 2022. Furthermore, examined current sustainability evaluation methods and offered insights into how sustainability assessment techniques have evolved in the textile and clothing industry

Multicriteria feasibility assessment of BioSuccinic acid production from lignocellulosic biomass

The goal of any lignocellulosic based biorefinery should be to produce a spectrum of marketable products and energy utilizing all significant components of biomass. Depending on the maturity of available technology, biorefineries can target high-value low-volume (HVLV), middle-value middle-volume (MVMV), and low-value high-volume (LVHV) outputs provided they are economically feasible. BioSuccinic Acid (BioSA), a MVMV product, has considerable potential as a candidate for biorefineries based on an analysis we carried out initially. The total world production of Succinic Acid (SA) in 2013–2014 was 38,000 tons, valued at 2.90 USD/kg SA and with predicted worldwide market demand of 94,000 tons by 2025. However, the most crucial challenge encountered with BioSA production is the cost of production compared to its conventional fossil-based counterpart. About a decade ago, many industries were set up to produce succinic acid from starch-based renewable sources when the cost of petroleum and petroleumbased products was higher than 100 dollars a barrel. The drop-in petroleum prices have led to the closure or re-orientation of some of these industrial units. [...

Supplier Evaluation with Hesitant Fuzzy Analytic Hierarchy Process in Bearing Sector and Consistency Analysis

The bearing sector has a demand for high precision and expensive machine tools. To ensure product quality and reduction of operating costs, the manufacturers in this sector should develop an appropriate supplier evaluation mechanism for the bearings. Therefore, this study presents a Hesitant Fuzzy Analytic Hierarchy Process (HF-AHP) technique for the evaluation of suppliers. HF-AHP, which is an extension of the well-known Fuzzy AHP (F-AHP), allows more space to decision makers while they are performing pairwise comparisons in hesitant situations. This article also introduces a consistency analysis technique for the preferences. This technique firstly sorts out the hesitancy and then deals with fuzzy comparisons. In addition, to demonstrate the applicability of the proposed approach, a case study is presented as a numerical example in the bearing industry. The results of this application are compared with the results of the same case that was previously handled with the traditional F-AHP method in the literature. Finally, sensitivity analysis, which is performed to check the robustness of the decision, investigates the effects of changes in criteria weights

Multi-dimensional Sustainability Evaluation of Indigo Rope Dyeing with a life cycle approach and hesitant fuzzy analytic hierarchy process

© 2021The dyeing process of denim fabric production has the highest potential for significant environmental and human health impacts of denim production, consuming vast amounts of water, chemicals, and dyes. This study aims to assess the sustainability of indigo rope dyeing (IRD) obtained by designing a new recipe with the chemical alternative assessment method. Not only environmental impacts, but also social, economic, and product quality dimensions were included in the multidimensional sustainability assessment. The hesitant fuzzy analytical hierarchy process (HF-AHP) method was used to determine the criteria weights of the determined dimensions. The environmental and social impacts of the existing and newly designed IRD process were evaluated using the gate-to-gate life cycle assessment (LCA) and social life cycle assessment (S-LCA) approach. According to the LCA results, the green IRD process exhibited better performance in terms of all environmental impacts evaluated and the abiotic depletion potential of the conventional indigo IRD process can be reduced by 62.55% by applying the green IRD process. According to the HF-AHP results, the most important criteria were environmental impact with 33%, followed by social impacts with 27%, quality results with 23%, and economic results with 17% in assessing the IRD process's sustainability denim production. These results showed that the sustainability of the IRD process could be improved by substituting the chemicals and dyestuff with green alternatives