Decision Science Letters最新文献_第10页

A hybrid multi-criteria decision-making and system dynamics approach in vulnerability analysis of TNI-POLRI power TNI-POLRI电力脆弱性分析的多准则决策与系统动力学混合方法

IF 1.9

Decision Science Letters Pub Date : 2022-01-01 DOI: 10.5267/j.dsl.2022.6.004

B. Yulianto, I. G. Sudjatmiko, A. Octavian, I. Putra

引用次数: 0

An algorithm to estimate the risk of child labor 一种估算童工风险的算法

IF 1.9

Decision Science Letters Pub Date : 2022-01-01 DOI: 10.5267/j.dsl.2022.5.004

Ricky Bryan Quiñones Fabian, Ruben Aldair Andamayo Alcantara, Abel Jesus Inga Lopez, Jaime Antonio Huaytalla Pariona, J. A. D. Quispe

引用次数: 0

Classification and prediction of rural socio-economic vulnerability (IRSV) integrated with social-ecological system (SES) 基于社会生态系统的农村社会经济脆弱性分类与预测

IF 1.9

Decision Science Letters Pub Date : 2022-01-01 DOI: 10.5267/j.dsl.2022.4.001

D. Yuliawan, D. Hakim, B. Juanda, A. Fauzi

引用次数: 4

Decision-making in formation of mean-VaR optimal portfolio by selecting stocks using K-means and average linkage clustering 运用k -均值和平均关联聚类方法选择股票，形成均值- var最优投资组合的决策

IF 1.9

Decision Science Letters Pub Date : 2022-01-01 DOI: 10.5267/j.dsl.2022.7.002

Ahmad Fawaid Ridwan, H. Napitupulu, S. Sukono

{"title":"Decision-making in formation of mean-VaR optimal portfolio by selecting stocks using K-means and average linkage clustering","authors":"Ahmad Fawaid Ridwan, H. Napitupulu, S. Sukono","doi":"10.5267/j.dsl.2022.7.002","DOIUrl":"https://doi.org/10.5267/j.dsl.2022.7.002","url":null,"abstract":"Stock is one of the investment assets that has its charm for investors. It is very liquid and has a high rate of return, but it has a high risk. The strategy commonly used to minimize investment risk is to diversify through portfolio formation. A good allocation of funds must be determined in forming an optimal portfolio. In addition, the method of stock selection needs to be considered so the stocks are well diversified and the portfolio developed has good performance. This study aims to compare stock selection between K-Means and Average Linkage clustering approaches in forming an investment portfolio. Clustering analysis is used to group IDX80 stocks based on their attributes. In forming a portfolio with the Mean-VaR model, the stock selection decision criteria used are by selecting stocks with the highest positive returns from each cluster. As a result, the two clustering techniques show the superiority of the Silhouette score for a certain number of clusters, but there are still more advantages in Average Linkage. The portfolio approached by Average Linkage resulted in a better performance than the portfolio approached by K-Means. Therefore, Average Linkage clustering can be used as a better recommendation in decision-making to select stocks so as to produce optimal portfolio performance.","PeriodicalId":38141,"journal":{"name":"Decision Science Letters","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83798035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

AHP and fuzzy logic geospatial approach for forest fire vulnerable zones 森林火灾易损区层次分析法与模糊逻辑地理空间方法

IF 1.9

Decision Science Letters Pub Date : 2022-01-01 DOI: 10.5267/j.dsl.2022.8.001

Nawras Shatnawi

{"title":"AHP and fuzzy logic geospatial approach for forest fire vulnerable zones","authors":"Nawras Shatnawi","doi":"10.5267/j.dsl.2022.8.001","DOIUrl":"https://doi.org/10.5267/j.dsl.2022.8.001","url":null,"abstract":"Fires are devastating risky events in forests, having a negative effect on resources, biodiversity, economics, animal life, and putting people in danger. The goal of this study is to use geospatial techniques to identify areas in Jordan that are at risk of forest fires. The research area extends 50 kilometers north and 15 kilometers east from the Dead Sea. The forest fire risk zones map was developed using six factors: land cover class, aspect, proximity to settlements, elevation, slope, and proximity to roads. All of the factors have been selected based on their fire sensitivity or capacity to cause fire. In this study, a Turkish model with fuzzy logic and Analytical hierarchy analysis (AHP) was utilized to classify the area into five categories of risk ranging from very low to very high. According to the findings, approximately 12.12% of the study area is classified as very low risk, 25.54 % is classified as medium risk, while 12.84% is classified as very high risk. Over the last ten years, the map has been confirmed by prior fire occurrences using data from civil defense archives. This conclusion was very useful in gaining an understanding of the geographical distribution of fire-vulnerable zones. The research found that the GIS approach combined with AHP and fuzzy logic is a useful tool for estimating such kinds of maps.","PeriodicalId":38141,"journal":{"name":"Decision Science Letters","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74995021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation optimization of an inventory control model for a reverse logistics system 逆向物流系统库存控制模型的仿真优化

IF 1.9

Decision Science Letters Pub Date : 2022-01-01 DOI: 10.5267/j.dsl.2021.9.001

Hanane Rachih, F. Mhada, R. Chiheb

{"title":"Simulation optimization of an inventory control model for a reverse logistics system","authors":"Hanane Rachih, F. Mhada, R. Chiheb","doi":"10.5267/j.dsl.2021.9.001","DOIUrl":"https://doi.org/10.5267/j.dsl.2021.9.001","url":null,"abstract":"Nowadays, companies are recognizing their primordial roles and responsibilities towards the protection of the environment and save the natural resources. They are focusing on some contemporary activities such as Reverse Logistics which is economically and environmentally viable. However, the integration of such an initiative needs flows restructuring and supply chain management in order to increase sustainability and maximize profits. Under this background, this paper addresses an inventory control model for a reverse logistics system that deals with two separated types of demand, for new products and remanufactured products, with different selling prices. The model consists of a single shared machine between production and remanufacturing operations, while the machine is subject to random failures and repairs. Three stock points respectively for returns, new products and remanufactured products are investigated. Meanwhile, in this paper, a modeling of the problem with Discrete-Event simulation using Arena® was conducted. Regarding the purpose of finding, a near-optimal inventory control policy that minimizes the total cost, an optimization of the model based on Tabu Search and Genetic Algorithms was established. Computational examples and sensitivity analysis were performed in order to compare the results and the robustness of each proposed algorithm. Then the results of the two methods were compared with those of OptQuest® optimization tool.","PeriodicalId":38141,"journal":{"name":"Decision Science Letters","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83922016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Exploring quality inspection and grade judgment of distortion defects in the fabrication of spectacle lenses 探索镜片制造中变形缺陷的质量检测与等级判断

IF 1.9

Decision Science Letters Pub Date : 2022-01-01 DOI: 10.5267/j.dsl.2022.6.001

Hong-Dar Lin, Tung-Hsin Lee, Chou-Hsien Lin, Y. Chiu

{"title":"Exploring quality inspection and grade judgment of distortion defects in the fabrication of spectacle lenses","authors":"Hong-Dar Lin, Tung-Hsin Lee, Chou-Hsien Lin, Y. Chiu","doi":"10.5267/j.dsl.2022.6.001","DOIUrl":"https://doi.org/10.5267/j.dsl.2022.6.001","url":null,"abstract":"This study explores the quality control system featuring visual inspection and grade judgment for detecting distortion defects in spectacle lens fabrication. Spectacle lenses must be precisely curved to help accommodate nearsightedness and farsightedness. The curved shape allows the lens to have different curvatures in different areas during grinding. The spectacle lens will be prone to optical distortion when the curvature changes abnormally. Accordingly, this study proposes an automatic distortion flaw inspection system for spectacle lenses to substitute professional inspectors who rely on empirical judgment. We first apply the digital imaging of a concentric circle pattern through a testing lens to create an image of that lens. Second, the centroid–radii model is employed to stand for the shape property of each concentric circle in the image. Third, by finding the deviations of the centroid radii for detecting distortion flaws through a small variation control method, we obtain a different image showing the detected distortion regions. Four, based on the distortion amounts and locations, we establish the fuzzy membership functions and inference rulesets to measure distortion severity. Finally, the GA-ANFIS model is applied to determine the quality levels of distortion severity for the detected distortion flaws. Trial outcomes reveal that the proposed automatic inspection system can help practitioners in spectacle lens fabrication, for it attains a high 94% correct classification rate of quality grades in distortion severity, 81.09% distortion flaw detection rate, and 10.94% fake alert rate, in distortion inspection of spectacle lenses.","PeriodicalId":38141,"journal":{"name":"Decision Science Letters","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80508999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Optimal selection of an electric power wheelchair using an integrated COPRAS and EDAS approach based on Entropy weighting technique 基于熵权技术的COPRAS与EDAS相结合的电动轮椅优化选择

IF 1.9

Decision Science Letters Pub Date : 2022-01-01 DOI: 10.5267/j.dsl.2021.10.002

S. K. Sahoo, B. B. Choudhury

引用次数: 9

IF 1.9

Decision Science Letters Pub Date : 2022-01-01 DOI: 10.5267/j.dsl.2021.11.003

Laxminarayan Sahoo

引用次数: 14

Planning rice cultivation in a large plot agricultural system 在大块农业系统中规划水稻种植

IF 1.9

Decision Science Letters Pub Date : 2022-01-01 DOI: 10.5267/j.dsl.2021.10.003

Montri Singhavara, Kamoltip Panyasit, S. Nonthapot

{"title":"Planning rice cultivation in a large plot agricultural system","authors":"Montri Singhavara, Kamoltip Panyasit, S. Nonthapot","doi":"10.5267/j.dsl.2021.10.003","DOIUrl":"https://doi.org/10.5267/j.dsl.2021.10.003","url":null,"abstract":"This research aimed to study the approach of the community toward the decision to grow rice and economic crops, including appropriate resource allocation for use on a farm under a large plot agricultural system. The study areas were in Phan district, Chiang Rai province, Thailand, and the data were collected from a sampling of 400 field agriculturalists. The method used was to develop a mathematical model for growing crops with multi-objectives and in multi-periods, together with an agriculturist representative and experts in multiple-criteria decision-making (MCDM). This was to prioritize the importance of alternative crops and find the appropriate allocation of the resources to achieve the targeted goal. The results showed that agriculturists prioritized most toward the criteria for growing Japanese rice with a weight of 0.179 Kg., followed by transplanted rice, transplanted glutinous rice, garlic, sown paddy rice, and sown glutinous paddy rice, respectively. The study’s results also showed that the price fluctuation of the crop products resulted in more use of land and labor in order to increase the production to compensate for the low price, and this also resulted in the higher opportunity cost of growing transplanted rice. Therefore, growing transplanted rice during in season planting was considered the most effective way, while during the off season, either garlic or Japanese rice could be grown. A collective pattern for planning for using resources together in large plot agricultural areas, together with a clear marketing target would bring about effective use of the resources and reduce the risk in revenue from the fluctuation in prices and uncertainty of yields from drought. Moreover, technology development to solve the problem of the lack of labor would be deemed an important approach toward the enhancement of the competitiveness of agriculturists in the future as well.","PeriodicalId":38141,"journal":{"name":"Decision Science Letters","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79529982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1