首页 > 最新文献

Operational Research in Engineering Sciences: Theory and Applications最新文献

英文 中文
The Effects of Sustainable Governance to Sustainable Development 可持续治理对可持续发展的影响
Q1 Engineering Pub Date : 2022-08-15 DOI: 10.31181/oresta060722090g
H. Gündoğdu, A. Aytekin
{"title":"The Effects of Sustainable Governance to Sustainable Development","authors":"H. Gündoğdu, A. Aytekin","doi":"10.31181/oresta060722090g","DOIUrl":"https://doi.org/10.31181/oresta060722090g","url":null,"abstract":"","PeriodicalId":36055,"journal":{"name":"Operational Research in Engineering Sciences: Theory and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47904628","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: 12
Single-Digit time: Toward a Quick Change-over Process with The SMED method using The Vision System 一位数时间:使用视觉系统的SMED方法实现快速转换过程
Q1 Engineering Pub Date : 2022-04-20 DOI: 10.31181/oresta190222076h
Hendi Herlambang, Zulfa Fitri Ikatrinasari, K. Kosasih
Increasing the speed of the product change-over process is critical by implementing the Single Minute Exchange of Dies (SMED) effectively. The smallest activity variation between operators, activity speed, and process accuracy are identified research targets. This research was developed in the electronic component industry, where the Define-Measure-Analyze-Improve-Control (DMAIC) and Hierarchy Task Analysis (HTA) methods can describe the most crucial and key activities. Therefore, it takes accuracy and reliability between operators to carry out this activity. This paper presents the acceleration of the product change-over process by developing an automated non-contact inspection method in the assembly area using a vision system. The results of the study illustrate that the change-over process can be carried out in single-digit minutes (7 minutes), or reduced by 81%, and the speed of change-over activities between operators is the same.
通过有效实施单分钟模具更换(SMED),提高产品转换过程的速度至关重要。操作员之间最小的活动变化、活动速度和过程准确性是确定的研究目标。这项研究是在电子元件行业发展起来的,其中定义测量分析改进控制(DMAIC)和层次任务分析(HTA)方法可以描述最关键的活动。因此,操作员之间进行此活动需要准确性和可靠性。本文通过开发一种使用视觉系统在装配区进行自动非接触式检测的方法来加速产品转换过程。研究结果表明,转换过程可以在个位数分钟(7分钟)内进行,或减少81%,并且操作员之间的转换活动速度相同。
{"title":"Single-Digit time: Toward a Quick Change-over Process with The SMED method using The Vision System","authors":"Hendi Herlambang, Zulfa Fitri Ikatrinasari, K. Kosasih","doi":"10.31181/oresta190222076h","DOIUrl":"https://doi.org/10.31181/oresta190222076h","url":null,"abstract":"Increasing the speed of the product change-over process is critical by implementing the Single Minute Exchange of Dies (SMED) effectively. The smallest activity variation between operators, activity speed, and process accuracy are identified research targets. This research was developed in the electronic component industry, where the Define-Measure-Analyze-Improve-Control (DMAIC) and Hierarchy Task Analysis (HTA) methods can describe the most crucial and key activities. Therefore, it takes accuracy and reliability between operators to carry out this activity. This paper presents the acceleration of the product change-over process by developing an automated non-contact inspection method in the assembly area using a vision system. The results of the study illustrate that the change-over process can be carried out in single-digit minutes (7 minutes), or reduced by 81%, and the speed of change-over activities between operators is the same.","PeriodicalId":36055,"journal":{"name":"Operational Research in Engineering Sciences: Theory and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44763393","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
Development of a Rough-MABAC-DoE-based Metamodel for Supplier Selection in an Iron and Steel Industry 钢铁行业供应商选择的基于粗糙MABAC-DoE的元模型开发
Q1 Engineering Pub Date : 2022-04-20 DOI: 10.31181/oresta190222046c
Ritwika Chattopadhyay, P. P. Das, S. Chakraborty
In the context of supply chain management, supplier selection can be defined as the process by which organizations score and evaluate a range of alternative suppliers to choose the best possible one who can provide superior quality of raw materials at cheaper rate and lesser lead time. It is a decision making process with multiple trade-offs between various conflicting criteria which in turn helps the organizations identify the suitable suppliers that would establish a robust supply chain assisting in maintaining a competitive edge. The main objective of supplier selection is thus focused on reducing purchase risk, maximizing overall value to the organization, and developing closeness and long-term relationships between the suppliers and the organization. In this paper, while selecting the most suitable supplier for gearboxes in an Indian iron and steel industry, assessments of three decision makers on the performance of five candidate suppliers with respect to five evaluation criteria are first aggregated using rough numbers. The definitive distances of those rough numbers are then treated as the inputs to a 25 full-factorial design plan with the corresponding multi-attributive border approximation area comparison (MABAC) scores as the output variables. Finally, a design of experiments (DoE)-based metamodel is formulated to interlink the computed MABAC scores with the considered criteria. The competing suppliers are ranked based on this rough-MABAC-DoE-based metamodel, which also easies out the computational steps when new suppliers are included in the decision making process.
在供应链管理的背景下,供应商选择可以定义为组织对一系列备选供应商进行评分和评估的过程,以选择能够以更低的价格和更短的交货时间提供优质原材料的最佳供应商。这是一个决策制定过程,在各种相互冲突的标准之间进行多种权衡,从而帮助组织确定合适的供应商,这些供应商将建立一个强大的供应链,帮助保持竞争优势。因此,供应商选择的主要目标是降低采购风险,最大化组织的整体价值,并在供应商和组织之间建立密切和长期的关系。在本文中,在为印度钢铁行业选择最合适的齿轮箱供应商时,首先使用粗略的数字对三个决策者对五个候选供应商的五个评估标准的绩效进行了评估。然后将这些粗略数字的确定距离作为25个全因子设计计划的输入,并将相应的多属性边界近似面积比较(MABAC)分数作为输出变量。最后,设计了一个基于实验(DoE)的元模型,将计算的MABAC分数与考虑的标准联系起来。基于粗糙的mabac - do元模型对竞争供应商进行排序,简化了在决策过程中引入新供应商的计算步骤。
{"title":"Development of a Rough-MABAC-DoE-based Metamodel for Supplier Selection in an Iron and Steel Industry","authors":"Ritwika Chattopadhyay, P. P. Das, S. Chakraborty","doi":"10.31181/oresta190222046c","DOIUrl":"https://doi.org/10.31181/oresta190222046c","url":null,"abstract":"In the context of supply chain management, supplier selection can be defined as the process by which organizations score and evaluate a range of alternative suppliers to choose the best possible one who can provide superior quality of raw materials at cheaper rate and lesser lead time. It is a decision making process with multiple trade-offs between various conflicting criteria which in turn helps the organizations identify the suitable suppliers that would establish a robust supply chain assisting in maintaining a competitive edge. The main objective of supplier selection is thus focused on reducing purchase risk, maximizing overall value to the organization, and developing closeness and long-term relationships between the suppliers and the organization. In this paper, while selecting the most suitable supplier for gearboxes in an Indian iron and steel industry, assessments of three decision makers on the performance of five candidate suppliers with respect to five evaluation criteria are first aggregated using rough numbers. The definitive distances of those rough numbers are then treated as the inputs to a 25 full-factorial design plan with the corresponding multi-attributive border approximation area comparison (MABAC) scores as the output variables. Finally, a design of experiments (DoE)-based metamodel is formulated to interlink the computed MABAC scores with the considered criteria. The competing suppliers are ranked based on this rough-MABAC-DoE-based metamodel, which also easies out the computational steps when new suppliers are included in the decision making process.","PeriodicalId":36055,"journal":{"name":"Operational Research in Engineering Sciences: Theory and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46480904","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: 24
A New Fuzzy Grach Model to forecast Stock Market Technical Analysis 一种新的模糊图模型预测股市技术分析
Q1 Engineering Pub Date : 2022-04-20 DOI: 10.31181/oresta040422196m
Saima Mustafa, Arfa Amjad Bajwa, Shafqat Iqbal
Decision making process in stock trading is a complex one. Stock market is a key factor of monetary markets and signs of economic growth. In some circumstances, traditional forecasting methods cannot contract with determining and sometimes data consist of uncertain and imprecise properties which are not handled by quantitative models. In order to achieve the main objective, accuracy and efficiency of time series forecasting, we move towards the fuzzy time series modeling. Fuzzy time series is different from other time series as it is represented in linguistics values rather than a numeric value. The Fuzzy set theory includes many types of membership functions. In this study, we will utilize the Fuzzy approach and trapezoidal membership function to develop the fuzzy generalized auto regression conditional heteroscedasticity (FGARCH) model by using the fuzzy least square techniques to forecasting stock exchange market prices. The experimental results show that the proposed forecasting system can accurately forecast stock prices. The accuracy measures RMSE, MAD, MAPE, MSE, and Theil-U-Statistics have values of 18.17, 15.65, 2.339, 301.998, and 0.003212, respectively, which confirmed that the proposed system is considered to be useful for forecasting the stock index prices, which outperforms conventional GARCH models.
股票交易中的决策过程是一个复杂的过程。股票市场是货币市场的关键因素,也是经济增长的标志。在某些情况下,传统的预测方法无法与确定相结合,有时数据包含不确定和不精确的属性,而定量模型无法处理这些属性。为了达到时间序列预测的主要目的、准确性和效率,我们向模糊时间序列建模迈进。模糊时间序列不同于其他时间序列,因为它是用语言学值而不是数值表示的。模糊集理论包括许多类型的隶属函数。在本研究中,我们将利用模糊方法和梯形隶属函数,利用模糊最小二乘技术建立模糊广义自回归条件异方差(FGARCH)模型来预测股票市场价格。实验结果表明,该预测系统能够准确地预测股票价格。准确度度量RMSE、MAD、MAPE、MSE和Theil-U-Statistics的值分别为18.17、15.65、2.339、301.998和0.003122,这证实了所提出的系统被认为有助于预测股指价格,其优于传统的GARCH模型。
{"title":"A New Fuzzy Grach Model to forecast Stock Market Technical Analysis","authors":"Saima Mustafa, Arfa Amjad Bajwa, Shafqat Iqbal","doi":"10.31181/oresta040422196m","DOIUrl":"https://doi.org/10.31181/oresta040422196m","url":null,"abstract":"Decision making process in stock trading is a complex one. Stock market is a key factor of monetary markets and signs of economic growth. In some circumstances, traditional forecasting methods cannot contract with determining and sometimes data consist of uncertain and imprecise properties which are not handled by quantitative models. In order to achieve the main objective, accuracy and efficiency of time series forecasting, we move towards the fuzzy time series modeling. Fuzzy time series is different from other time series as it is represented in linguistics values rather than a numeric value. The Fuzzy set theory includes many types of membership functions. In this study, we will utilize the Fuzzy approach and trapezoidal membership function to develop the fuzzy generalized auto regression conditional heteroscedasticity (FGARCH) model by using the fuzzy least square techniques to forecasting stock exchange market prices. The experimental results show that the proposed forecasting system can accurately forecast stock prices. The accuracy measures RMSE, MAD, MAPE, MSE, and Theil-U-Statistics have values of 18.17, 15.65, 2.339, 301.998, and 0.003212, respectively, which confirmed that the proposed system is considered to be useful for forecasting the stock index prices, which outperforms conventional GARCH models.","PeriodicalId":36055,"journal":{"name":"Operational Research in Engineering Sciences: Theory and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46246114","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: 16
Application of Wooden Modular Construction for the Needs of the Elderly 木质模块结构在满足老年人需求中的应用
Q1 Engineering Pub Date : 2022-04-20 DOI: 10.31181/oresta240322121n
A. Nicał, K. Sikora
In recent years, changes in demographic structure have been observed worldwide. To sustain the growing population of elderly people with special needs, homes need a radical rethink both in designing new houses and in retrofitting new solutions to existing houses. Designs that facilitate aging in place, designs that maintain thermal comfort, and designs that have net-zero energy demands and low to zero to negative carbon footprints are needed. The article discusses the issues of construction for the elderly. The trends in the demographic development of society in selected countries are presented. Additionally, information on the housing stock for elderly people in Poland is provided. The carbon dioxide emission limits to mitigate climate change make it necessary to find an alternative to concrete and steel, traditional construction materials. In this context, Cross Laminated Timber (CLT) fulfills the sustainability requirements. However, to select the suitable panel a detailed analysis of timber characteristics is required. It is necessary to evaluate mechanical properties in bending, tension, compression, and shear. Since the mechanical properties of certain types of wood differ, their proper selection is challenging. The multi-criteria analysis could address this. In this article, four wood species, spruce, oak, ash, and beech, were evaluated using the Analytic Hierarchy Process (AHP) analysis. Based on the type of construction elements and their functions, analyses were using six mechanical properties as criteria. The optimal type of wood was indicated.
近年来,世界范围内的人口结构发生了变化。为了满足不断增长的有特殊需求的老年人,住宅需要在设计新房屋和对现有房屋进行改造方面进行彻底的反思。我们需要能够促进老化的设计,保持热舒适的设计,以及净零能源需求和低至零至负碳足迹的设计。本文探讨了老年建筑的相关问题。介绍了选定国家的社会人口发展趋势。此外,还提供了关于波兰老年人住房存量的资料。减缓气候变化的二氧化碳排放限制使得有必要寻找一种替代混凝土和钢铁的传统建筑材料。在这种情况下,交叉层压木材(CLT)满足了可持续性要求。然而,为了选择合适的面板,需要对木材特性进行详细的分析。有必要评估其在弯曲、拉伸、压缩和剪切方面的力学性能。由于某些类型的木材的机械性能不同,它们的正确选择是具有挑战性的。多标准分析可以解决这个问题。本文采用层次分析法(AHP)对云杉、橡树、白蜡树和山毛榉4种木材进行了评价。根据结构单元的类型及其功能,采用六种力学性能作为分析标准。指出了最佳的木材类型。
{"title":"Application of Wooden Modular Construction for the Needs of the Elderly","authors":"A. Nicał, K. Sikora","doi":"10.31181/oresta240322121n","DOIUrl":"https://doi.org/10.31181/oresta240322121n","url":null,"abstract":"In recent years, changes in demographic structure have been observed worldwide. To sustain the growing population of elderly people with special needs, homes need a radical rethink both in designing new houses and in retrofitting new solutions to existing houses. Designs that facilitate aging in place, designs that maintain thermal comfort, and designs that have net-zero energy demands and low to zero to negative carbon footprints are needed. The article discusses the issues of construction for the elderly. The trends in the demographic development of society in selected countries are presented. Additionally, information on the housing stock for elderly people in Poland is provided. The carbon dioxide emission limits to mitigate climate change make it necessary to find an alternative to concrete and steel, traditional construction materials. In this context, Cross Laminated Timber (CLT) fulfills the sustainability requirements. However, to select the suitable panel a detailed analysis of timber characteristics is required. It is necessary to evaluate mechanical properties in bending, tension, compression, and shear. Since the mechanical properties of certain types of wood differ, their proper selection is challenging. The multi-criteria analysis could address this. In this article, four wood species, spruce, oak, ash, and beech, were evaluated using the Analytic Hierarchy Process (AHP) analysis. Based on the type of construction elements and their functions, analyses were using six mechanical properties as criteria. The optimal type of wood was indicated.","PeriodicalId":36055,"journal":{"name":"Operational Research in Engineering Sciences: Theory and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45523331","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
Estimating Rubber Covered Conveyor Belting Cure Times Using Multiple Simultaneous Optimizations Ensemble 使用多重同时优化集合估计橡胶覆盖输送机皮带固化时间
Q1 Engineering Pub Date : 2022-04-20 DOI: 10.31181/oresta180222016p
Domingo Pavolo, D. Chikobvu
Multiple response surface methodology (MRSM) has been the favorite method for optimizing multiple response processes though it has two weaknesses which challenge the credibility of its solutions. The first weakness is the use of experimentally generated small sample size datasets, and the second is the selection, using classical model selection criteria, of single best models for each response for use in simultaneous optimization to obtain the optimum or desired solution. Classical model selection criteria do not always agree on the best model resulting in model uncertainty. The selection of single best models for each response for simultaneous optimization loses information in rejected models. This work proposes the use of multiple simultaneous optimizations to estimate multiple solutions that are ensembled in solving a conveyor belting cure time problem. The solution is compared with one obtained by simultaneous optimization of single best models for each response. The two results were different. However, results show that it is possible to obtain a more credible solution through ensembling of solutions from multiple simultaneous optimizations.
多响应面方法(MRSM)一直是优化多响应过程的常用方法,但它有两个缺点,这对其解的可信度构成了挑战。第一个缺点是使用实验生成的小样本数据集,第二个缺点是使用经典模型选择标准,为每个响应选择单个最佳模型,用于同时优化以获得最优或期望的解决方案。经典的模型选择标准并不总是一致的最佳模型,导致模型的不确定性。为每个响应选择单个最佳模型进行同时优化会丢失被拒绝模型中的信息。这项工作提出使用多个同时优化来估计在解决输送带固化时间问题中集成的多个解决方案。并与对每个响应同时优化单个最优模型得到的解进行了比较。这两个结果是不同的。然而,结果表明,通过将多个同时优化的解决方案集成在一起,可以获得更可信的解决方案。
{"title":"Estimating Rubber Covered Conveyor Belting Cure Times Using Multiple Simultaneous Optimizations Ensemble","authors":"Domingo Pavolo, D. Chikobvu","doi":"10.31181/oresta180222016p","DOIUrl":"https://doi.org/10.31181/oresta180222016p","url":null,"abstract":"Multiple response surface methodology (MRSM) has been the favorite method for optimizing multiple response processes though it has two weaknesses which challenge the credibility of its solutions. The first weakness is the use of experimentally generated small sample size datasets, and the second is the selection, using classical model selection criteria, of single best models for each response for use in simultaneous optimization to obtain the optimum or desired solution. Classical model selection criteria do not always agree on the best model resulting in model uncertainty. The selection of single best models for each response for simultaneous optimization loses information in rejected models. This work proposes the use of multiple simultaneous optimizations to estimate multiple solutions that are ensembled in solving a conveyor belting cure time problem. The solution is compared with one obtained by simultaneous optimization of single best models for each response. The two results were different. However, results show that it is possible to obtain a more credible solution through ensembling of solutions from multiple simultaneous optimizations.","PeriodicalId":36055,"journal":{"name":"Operational Research in Engineering Sciences: Theory and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47403131","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
Mathematical Modelling of Non-Permutation Flow Shop Processes with Lot Streaming in the Smart Manufacturing Era 智能制造时代具有批量流的非置换流水车间过程数学建模
Q1 Engineering Pub Date : 2022-04-20 DOI: 10.31181/oresta250322166r
D. Rossit, F. Tohmé, Rodrigo Introcaso, Jeanette Rodríguez
Industry 4.0 is leveraging the production capabilities of the industry. The deep digitalization that Industry 4.0 promotes enables to extend control skills to an exhaustive detail in the shop floors. Then, new planning strategies can be designed and implemented. We present mathematical models to represent non-permutation flow shop processes, incorporating Industry 4.0 features and customer-focused attention. Basically, we study the impact of lot streaming on the ensuing optimization problems, since the work-in-process inventory control is considerably enhanced by Industry 4.0 technologies. Thus, is possible to take advantage of subdividing the production lots into smaller sublots, as lot streaming proposes. To test this hypothesis we use a novel approach to non-permutation flow shop problems which requires a lot streaming strategy, incorporating total tardiness as objective function. Our analysis indicates that lot streaming improves results increasingly with the number of machines. We also find that the improvement is less steep with more sublots, increasing the computational cost of solutions. This indicates that it is highly relevant to fine tune the maximum number of sublots to avoid extra costs.
工业4.0正在利用工业的生产能力。工业4.0推动的深度数字化使控制技能能够扩展到车间的详尽细节。然后,可以设计和实施新的规划策略。我们提出了表示非排列流程车间流程的数学模型,结合了工业4.0的特点和以客户为中心的关注。基本上,我们研究批量流对随后的优化问题的影响,因为工业4.0技术大大增强了在制品库存控制。因此,可以利用将生产批次细分为更小的子批次的优势,正如批次流所建议的那样。为了验证这一假设,我们使用了一种新的方法来解决非置换流车间问题,该问题需要大量的流策略,并将总延迟作为目标函数。我们的分析表明,随着机器数量的增加,批量流式处理越来越能提高结果。我们还发现,随着子批次的增加,改进不那么陡峭,增加了解决方案的计算成本。这表明微调子批次的最大数量以避免额外成本是高度相关的。
{"title":"Mathematical Modelling of Non-Permutation Flow Shop Processes with Lot Streaming in the Smart Manufacturing Era","authors":"D. Rossit, F. Tohmé, Rodrigo Introcaso, Jeanette Rodríguez","doi":"10.31181/oresta250322166r","DOIUrl":"https://doi.org/10.31181/oresta250322166r","url":null,"abstract":"Industry 4.0 is leveraging the production capabilities of the industry. The deep digitalization that Industry 4.0 promotes enables to extend control skills to an exhaustive detail in the shop floors. Then, new planning strategies can be designed and implemented. We present mathematical models to represent non-permutation flow shop processes, incorporating Industry 4.0 features and customer-focused attention. Basically, we study the impact of lot streaming on the ensuing optimization problems, since the work-in-process inventory control is considerably enhanced by Industry 4.0 technologies. Thus, is possible to take advantage of subdividing the production lots into smaller sublots, as lot streaming proposes. To test this hypothesis we use a novel approach to non-permutation flow shop problems which requires a lot streaming strategy, incorporating total tardiness as objective function. Our analysis indicates that lot streaming improves results increasingly with the number of machines. We also find that the improvement is less steep with more sublots, increasing the computational cost of solutions. This indicates that it is highly relevant to fine tune the maximum number of sublots to avoid extra costs.","PeriodicalId":36055,"journal":{"name":"Operational Research in Engineering Sciences: Theory and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47853931","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
The Demographic and institutional Determinants affecting Manpower’s development at the government sector 影响政府部门人力资源发展的人口和制度决定因素
Q1 Engineering Pub Date : 2022-04-20 DOI: 10.31181/oresta290122001e
Mohamed A. Elkhouli
This study aimed to apply the measurement of the impact of determinants of the change management process (CMP) on the competitive performance (CP) of the employees at the government sector in a practical environment by comparison between the employees’ expectation at the Government of Ras Al-Khaimah compared to the expectation of employees at Ajman Government. Thus, the Emirate of Ajman within the UAE was selected to apply the same scale of measuring which has same conditions of the work of the government sector and similar geographical aspects like the Emirate of RAK. The results have shown a significant impact of the role of direct determinants which were assumed by the current study in the influence of improving the competitiveness of the employees during the implementation to any change management process planned at the level of government sectors. There were five key determinants respectively in terms of impact strength, and those determinants were creation and innovation, institutional values, quality and excellence systems, administrative and legal aspects and finally, the role of leadership.
本研究旨在通过比较员工对Ras Al-Khaimah政府的期望与Ajman政府员工的期望,来衡量变革管理过程(CMP)的决定因素对政府部门员工在实际环境中的竞争绩效(CP)的影响。因此,阿联酋境内的阿吉曼酋长国被选择采用相同的测量尺度,该尺度具有相同的政府部门工作条件和类似的地理方面,如RAK酋长国。研究结果表明,在政府部门层面计划的任何变革管理过程的实施过程中,当前研究所承担的直接决定因素对提高员工竞争力的影响具有重大影响。就影响力而言,分别有五个关键决定因素,这些决定因素是创造和创新、制度价值、质量和卓越体系、行政和法律方面,最后是领导作用。
{"title":"The Demographic and institutional Determinants affecting Manpower’s development at the government sector","authors":"Mohamed A. Elkhouli","doi":"10.31181/oresta290122001e","DOIUrl":"https://doi.org/10.31181/oresta290122001e","url":null,"abstract":"This study aimed to apply the measurement of the impact of determinants of the change management process (CMP) on the competitive performance (CP) of the employees at the government sector in a practical environment by comparison between the employees’ expectation at the Government of Ras Al-Khaimah compared to the expectation of employees at Ajman Government. Thus, the Emirate of Ajman within the UAE was selected to apply the same scale of measuring which has same conditions of the work of the government sector and similar geographical aspects like the Emirate of RAK. The results have shown a significant impact of the role of direct determinants which were assumed by the current study in the influence of improving the competitiveness of the employees during the implementation to any change management process planned at the level of government sectors. There were five key determinants respectively in terms of impact strength, and those determinants were creation and innovation, institutional values, quality and excellence systems, administrative and legal aspects and finally, the role of leadership.","PeriodicalId":36055,"journal":{"name":"Operational Research in Engineering Sciences: Theory and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46473198","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
Criteria selection and decision making of hotels using Dominance Based Rough Set Theory 基于优势度粗糙集理论的酒店标准选择与决策
Q1 Engineering Pub Date : 2022-04-20 DOI: 10.31181/oresta190222061s
H. Sharma, Aarti Singh, Dixy Yadav, S. Kar
Accommodation is one of the necessities of tourists and travel agencies' significant responsibilities. With the growing competition and profit-making various tour organising companies have started providing attractive accommodation options to the travellers to win their choices. Present research performs a case study on accommodation providing hotels through designing a strategy to enhance their profit earrings by welcoming more and more tourists. The methodology comprises rough set theory (RST) using the Dominance Based rough set theory (DRST) on the collected data of selected variables such as location, facility, value for money, etc., of hotels. Correspondingly, if and then decision rule has been used to classify these variables. The statistical methods regression analysis has also been used to define each variable's relationship and influence on concerned authorities' decision-making. The results show that hotels and tourists can benefit from the proposed strategy and help in decision making by understanding tourist behaviour, increasing profit, improving services, and quality of hotels.
住宿是游客的必需品之一,也是旅行社的重要职责。随着竞争的加剧和盈利的增加,各种旅行社开始为游客提供有吸引力的住宿选择,以赢得他们的选择。本研究对提供住宿的酒店进行了案例研究,通过设计一种策略来提高其利润,以迎接越来越多的游客。该方法包括基于优势的粗糙集理论(DRST)的粗糙集论(RST),该理论基于所收集的选定变量的数据,如酒店的位置、设施、性价比等。相应地,if and then决策规则被用于对这些变量进行分类。统计方法回归分析也被用来定义每个变量的关系和对有关当局决策的影响。结果表明,酒店和游客可以从所提出的策略中受益,并通过了解游客行为、增加利润、改善服务和酒店质量来帮助决策。
{"title":"Criteria selection and decision making of hotels using Dominance Based Rough Set Theory","authors":"H. Sharma, Aarti Singh, Dixy Yadav, S. Kar","doi":"10.31181/oresta190222061s","DOIUrl":"https://doi.org/10.31181/oresta190222061s","url":null,"abstract":"Accommodation is one of the necessities of tourists and travel agencies' significant responsibilities. With the growing competition and profit-making various tour organising companies have started providing attractive accommodation options to the travellers to win their choices. Present research performs a case study on accommodation providing hotels through designing a strategy to enhance their profit earrings by welcoming more and more tourists. The methodology comprises rough set theory (RST) using the Dominance Based rough set theory (DRST) on the collected data of selected variables such as location, facility, value for money, etc., of hotels. Correspondingly, if and then decision rule has been used to classify these variables. The statistical methods regression analysis has also been used to define each variable's relationship and influence on concerned authorities' decision-making. The results show that hotels and tourists can benefit from the proposed strategy and help in decision making by understanding tourist behaviour, increasing profit, improving services, and quality of hotels.","PeriodicalId":36055,"journal":{"name":"Operational Research in Engineering Sciences: Theory and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47692001","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: 12
Night Traffic Flow Prediction Using K-Nearest Neighbors Algorithm 基于K-近邻算法的夜间交通流量预测
Q1 Engineering Pub Date : 2022-04-20 DOI: 10.31181/oresta240322136m
D. Mladenović, S. Janković, S. Zdravković, Snezana Mladenovic, Ana Uzelac
The aim of this research is to predict the total and average monthly night traffic on state roads in Serbia, using the technique of supervised machine learning. A set of data on total and average monthly night traffic has been used for training and testing of predictive models. The data set was obtained by counting the traffic on the roads in Serbia, in the period from 2011 to 2020. Various classification and regression prediction models have been tested using the Weka software tool on the available data set and the models based on the K-Nearest Neighbors algorithm, as well as models based on regression trees, have shown the best results. Furthermore, the best model has been chosen by comparing the performances of models. According to all the mentioned criteria, the model based on the K-Nearest Neighbors algorithm has shown the best results. Using this model, the prediction of the total and average nightly traffic per month for the following year at the selected traffic counting locations has been made.
本研究的目的是使用监督机器学习技术预测塞尔维亚国道上的总夜间交通量和月平均夜间交通量。一组关于每月总夜间交通量和平均夜间交通量的数据已用于预测模型的训练和测试。该数据集是通过统计2011年至2020年期间塞尔维亚道路上的交通量而获得的。已经使用Weka软件工具在可用数据集上测试了各种分类和回归预测模型,并且基于K-最近邻算法的模型以及基于回归树的模型显示出最佳结果。此外,通过比较模型的性能,选择了最佳模型。根据上述标准,基于K-最近邻算法的模型显示出最好的结果。使用该模型,已经对选定交通计数位置下一年每月的总交通量和平均夜间交通量进行了预测。
{"title":"Night Traffic Flow Prediction Using K-Nearest Neighbors Algorithm","authors":"D. Mladenović, S. Janković, S. Zdravković, Snezana Mladenovic, Ana Uzelac","doi":"10.31181/oresta240322136m","DOIUrl":"https://doi.org/10.31181/oresta240322136m","url":null,"abstract":"The aim of this research is to predict the total and average monthly night traffic on state roads in Serbia, using the technique of supervised machine learning. A set of data on total and average monthly night traffic has been used for training and testing of predictive models. The data set was obtained by counting the traffic on the roads in Serbia, in the period from 2011 to 2020. Various classification and regression prediction models have been tested using the Weka software tool on the available data set and the models based on the K-Nearest Neighbors algorithm, as well as models based on regression trees, have shown the best results. Furthermore, the best model has been chosen by comparing the performances of models. According to all the mentioned criteria, the model based on the K-Nearest Neighbors algorithm has shown the best results. Using this model, the prediction of the total and average nightly traffic per month for the following year at the selected traffic counting locations has been made.","PeriodicalId":36055,"journal":{"name":"Operational Research in Engineering Sciences: Theory and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47544765","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: 3
期刊
Operational Research in Engineering Sciences: Theory and Applications
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1