Pub Date : 2024-05-02DOI: 10.1007/s13198-024-02343-6
Ankita Panwar, Millie Pant
Data envelopment analysis (DEA) is a well-known multi-criteria decision-making technique which is used to measure the relative efficiency of decision-making units (DMUs). However, in the case of classical DEA, the discriminatory power is often weak particularly when the number of input and output variables are high. In the paper, combine analytic hierarchy process-principal component analysis, is applied to identify the most relevant criteria thereby reducing the number of criteria and increasing the discriminatory power of DEA. Further, in this study, super-efficiency-data envelopment analysis is applied to determine the efficiency of DMUs. The feasibility of the proposed process is illustrated for a real-world multi-criteria decision-making problem based on the hostel management system for the higher education institute and assesses the performance of the decision-making units.
数据包络分析(DEA)是一种著名的多标准决策技术,用于衡量决策单元(DMU)的相对效率。然而,就经典的 DEA 而言,其判别能力往往较弱,尤其是当输入和输出变量数量较多时。本文采用层次分析法--主成分分析法来确定最相关的标准,从而减少标准数量,提高 DEA 的判别能力。此外,本研究还采用了超效率-数据包络分析法来确定 DMU 的效率。在一个基于高等院校宿舍管理系统的真实世界多标准决策问题中,说明了所提议流程的可行性,并评估了决策单位的绩效。
{"title":"PCA integrated DEA for hostel assessment of a Higher Education Institution","authors":"Ankita Panwar, Millie Pant","doi":"10.1007/s13198-024-02343-6","DOIUrl":"https://doi.org/10.1007/s13198-024-02343-6","url":null,"abstract":"<p>Data envelopment analysis (DEA) is a well-known multi-criteria decision-making technique which is used to measure the relative efficiency of decision-making units (DMUs). However, in the case of classical DEA, the discriminatory power is often weak particularly when the number of input and output variables are high. In the paper, combine analytic hierarchy process-principal component analysis, is applied to identify the most relevant criteria thereby reducing the number of criteria and increasing the discriminatory power of DEA. Further, in this study, super-efficiency-data envelopment analysis is applied to determine the efficiency of DMUs. The feasibility of the proposed process is illustrated for a real-world multi-criteria decision-making problem based on the hostel management system for the higher education institute and assesses the performance of the decision-making units.</p>","PeriodicalId":14463,"journal":{"name":"International Journal of System Assurance Engineering and Management","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140884544","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}
Pub Date : 2024-05-02DOI: 10.1007/s13198-024-02344-5
Nusrat Mohi Ud Din, Assif Assad, Saqib Ul Sabha, Muzafar Rasool
The challenge of limited labeled data is a persistent concern across diverse domains, including healthcare, niche agricultural practices, astronomy and space exploration, anomaly detection, and many more. Limited data can lead to biased training, overfitting, and poor generalization in Artificial Intelligence (AI) models. In response to this ubiquitous problem, this research explores the potential of deep reinforcement learning (DRL) algorithms, specifically Double Deep Q-Network (Double DQN) and Dueling Deep Q-Network (Dueling DQN). The algorithms were trained on small training subsets generated by subsampling from the original training datasets. In this subsampling process, 10, 20, 30, and 40 instances were selected from each class to form the smaller training subsets. Subsequently, the performance of these algorithms was comprehensively assessed by evaluating them on the entire test set. We employed datasets from two different domains where this problem mainly exists to assess their performance in data-constrained scenarios. A comparative analysis was conducted against a transfer learning approach widely employed to tackle similar challenges. The comprehensive evaluation reveals compelling results. In the medical domain, Dueling DQN consistently outperformed Double DQN and transfer learning, while in the agriculture domain, Double DQN demonstrates superior performance compared to Dueling DQN and transfer learning. These findings underscore the remarkable effectiveness of DRL algorithms in addressing data scarcity across a spectrum of domains, positioning DRL as a potent tool for enhancing diverse applications with limited labeled data.
{"title":"Optimizing deep reinforcement learning in data-scarce domains: a cross-domain evaluation of double DQN and dueling DQN","authors":"Nusrat Mohi Ud Din, Assif Assad, Saqib Ul Sabha, Muzafar Rasool","doi":"10.1007/s13198-024-02344-5","DOIUrl":"https://doi.org/10.1007/s13198-024-02344-5","url":null,"abstract":"<p>The challenge of limited labeled data is a persistent concern across diverse domains, including healthcare, niche agricultural practices, astronomy and space exploration, anomaly detection, and many more. Limited data can lead to biased training, overfitting, and poor generalization in Artificial Intelligence (AI) models. In response to this ubiquitous problem, this research explores the potential of deep reinforcement learning (DRL) algorithms, specifically Double Deep Q-Network (Double DQN) and Dueling Deep Q-Network (Dueling DQN). The algorithms were trained on small training subsets generated by subsampling from the original training datasets. In this subsampling process, 10, 20, 30, and 40 instances were selected from each class to form the smaller training subsets. Subsequently, the performance of these algorithms was comprehensively assessed by evaluating them on the entire test set. We employed datasets from two different domains where this problem mainly exists to assess their performance in data-constrained scenarios. A comparative analysis was conducted against a transfer learning approach widely employed to tackle similar challenges. The comprehensive evaluation reveals compelling results. In the medical domain, Dueling DQN consistently outperformed Double DQN and transfer learning, while in the agriculture domain, Double DQN demonstrates superior performance compared to Dueling DQN and transfer learning. These findings underscore the remarkable effectiveness of DRL algorithms in addressing data scarcity across a spectrum of domains, positioning DRL as a potent tool for enhancing diverse applications with limited labeled data.</p>","PeriodicalId":14463,"journal":{"name":"International Journal of System Assurance Engineering and Management","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140884176","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}
Pub Date : 2024-05-01DOI: 10.1007/s13198-024-02346-3
Saqib ul Sabha, Assif Assad, Sadaf Shafi, Nusrat Mohi Ud Din, Rayees Ahmad Dar, Muzafar Rasool Bhat
Deep learning, while transformative for computer vision, frequently falters when confronted with small and imbalanced datasets. Despite substantial progress in this domain, prevailing models often underachieve under these constraints. Addressing this, we introduce an innovative contrast-based learning strategy for small and imbalanced data that significantly bolsters the proficiency of deep learning architectures on these challenging datasets. By ingeniously concatenating training images, the effective training dataset expands from n to (n^2), affording richer data for model training, even when n is very small. Remarkably, our solution remains indifferent to specific loss functions or network architectures, endorsing its adaptability for diverse classification scenarios. Rigorously benchmarked against four benchmark datasets, our approach was juxtaposed with state-of-the-art oversampling paradigms. The empirical evidence underscores our method’s superior efficacy, outshining contemporaries across metrics like Balanced accuracy, F1 score, and Geometric mean. Noteworthy increments include 7–16% on the Covid-19 dataset, 4–20% for Honey bees, 1–6% on CIFAR-10, and 1–9% on FashionMNIST. In essence, our proposed method offers a potent remedy for the perennial issues stemming from scanty and skewed data in deep learning.
深度学习虽然对计算机视觉具有变革意义,但在面对小型和不平衡数据集时往往会出现问题。尽管在这一领域取得了长足进步,但现有模型在这些限制条件下往往表现不佳。为了解决这个问题,我们针对小数据和不平衡数据引入了一种基于对比度的创新学习策略,大大提高了深度学习架构在这些具有挑战性的数据集上的能力。通过巧妙地连接训练图像,有效的训练数据集从 n 扩展到 (n^2),即使 n 非常小,也能为模型训练提供更丰富的数据。值得注意的是,我们的解决方案对特定的损失函数或网络架构无动于衷,这证明了它对不同分类场景的适应性。根据四个基准数据集对我们的方法进行了严格的基准测试,并将其与最先进的超采样范例进行了对比。经验证明,我们的方法具有卓越的功效,在平衡准确率、F1 分数和几何平均数等指标上都优于同时代的方法。值得注意的是,Covid-19 数据集的准确率提高了 7-16%,蜜蜂的准确率提高了 4-20%,CIFAR-10 的准确率提高了 1-6%,FashionMNIST 的准确率提高了 1-9%。从本质上讲,我们提出的方法为深度学习中因数据稀少和偏斜而长期存在的问题提供了有效的解决方案。
{"title":"Imbalcbl: addressing deep learning challenges with small and imbalanced datasets","authors":"Saqib ul Sabha, Assif Assad, Sadaf Shafi, Nusrat Mohi Ud Din, Rayees Ahmad Dar, Muzafar Rasool Bhat","doi":"10.1007/s13198-024-02346-3","DOIUrl":"https://doi.org/10.1007/s13198-024-02346-3","url":null,"abstract":"<p>Deep learning, while transformative for computer vision, frequently falters when confronted with small and imbalanced datasets. Despite substantial progress in this domain, prevailing models often underachieve under these constraints. Addressing this, we introduce an innovative contrast-based learning strategy for small and imbalanced data that significantly bolsters the proficiency of deep learning architectures on these challenging datasets. By ingeniously concatenating training images, the effective training dataset expands from <i>n</i> to <span>(n^2)</span>, affording richer data for model training, even when <i>n</i> is very small. Remarkably, our solution remains indifferent to specific loss functions or network architectures, endorsing its adaptability for diverse classification scenarios. Rigorously benchmarked against four benchmark datasets, our approach was juxtaposed with state-of-the-art oversampling paradigms. The empirical evidence underscores our method’s superior efficacy, outshining contemporaries across metrics like Balanced accuracy, F1 score, and Geometric mean. Noteworthy increments include 7–16% on the Covid-19 dataset, 4–20% for Honey bees, 1–6% on CIFAR-10, and 1–9% on FashionMNIST. In essence, our proposed method offers a potent remedy for the perennial issues stemming from scanty and skewed data in deep learning.</p>","PeriodicalId":14463,"journal":{"name":"International Journal of System Assurance Engineering and Management","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140826978","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}
Pub Date : 2024-04-30DOI: 10.1007/s13198-024-02341-8
Rajan Mondal, Subhajit Das, Md Akhtar, Ali Akbar Shaikh, Asoke Kumar Bhunia
This work presents a two-storage inventory model developed considering the effect of deterioration of items, partial advanced payment and two-level trade credit financing policies ignoring the relationship between the credit periods offered for retailers as well as customers by the supplier and retailer respectively. Here, demand is dependent on freshness period of the items, credit period (offered by the retailer) of customers and item’s selling price. Here, shortages are permitted with partially backlogged. According to the length of credit period for retailer, three scenarios are investigated. Then these scenarios are discussed in details and the corresponding models are formulated with the objectives to determine the optimal policy by optimizing the average profit of each scenario subject to some constraints. The corresponding optimization problems of different scenarios are non-linear in nature and those problems are solved with the help of differential evolution (DE) algorithm and other eight existing metaheuristic algorithms. To validate the model, three numerical examples are considered and solved. The results obtained from DE algorithm are compared statistically with that of other algorithms. For justification of the comparison and also the verification of the statistical significance of DE algorithm, two different tests, viz. Friedman and analysis of variance (ANOVA) tests are carried out for the numerical examples. Finally, sensitivity analyses are conducted and the effects of different system parameters on best found (optimal) policy are presented graphically.
本研究提出了一个双存储库存模型,该模型考虑了物品变质、部分预付款和两级贸易信贷融资政策的影响,忽略了供应商和零售商分别为零售商和客户提供的信贷期之间的关系。在这里,需求取决于商品的保鲜期、客户的信用期(零售商提供)和商品的销售价格。在这种情况下,允许部分积压,允许短缺。根据零售商信用期的长短,研究了三种情况。然后对这些方案进行了详细讨论,并建立了相应的模型,其目标是在一定的约束条件下,通过优化每种方案的平均利润来确定最优政策。不同方案的相应优化问题在本质上是非线性的,这些问题将借助微分进化(DE)算法和其他 8 种现有的元启发式算法来解决。为验证模型,考虑并求解了三个数值示例。将微分进化算法与其他算法的结果进行了统计比较。为了证明比较的合理性,同时验证 DE 算法的统计意义,对数值示例进行了两种不同的检验,即弗里德曼检验和方差分析(ANOVA)检验。最后,还进行了敏感性分析,并以图表形式展示了不同系统参数对最佳(最优)策略的影响。
{"title":"A two-warehouse inventory model for deteriorating items with partially backlogged demand rate under trade credit policies","authors":"Rajan Mondal, Subhajit Das, Md Akhtar, Ali Akbar Shaikh, Asoke Kumar Bhunia","doi":"10.1007/s13198-024-02341-8","DOIUrl":"https://doi.org/10.1007/s13198-024-02341-8","url":null,"abstract":"<p>This work presents a two-storage inventory model developed considering the effect of deterioration of items, partial advanced payment and two-level trade credit financing policies ignoring the relationship between the credit periods offered for retailers as well as customers by the supplier and retailer respectively. Here, demand is dependent on freshness period of the items, credit period (offered by the retailer) of customers and item’s selling price. Here, shortages are permitted with partially backlogged. According to the length of credit period for retailer, three scenarios are investigated. Then these scenarios are discussed in details and the corresponding models are formulated with the objectives to determine the optimal policy by optimizing the average profit of each scenario subject to some constraints. The corresponding optimization problems of different scenarios are non-linear in nature and those problems are solved with the help of differential evolution (DE) algorithm and other eight existing metaheuristic algorithms. To validate the model, three numerical examples are considered and solved. The results obtained from DE algorithm are compared statistically with that of other algorithms. For justification of the comparison and also the verification of the statistical significance of DE algorithm, two different tests, viz. Friedman and analysis of variance (ANOVA) tests are carried out for the numerical examples. Finally, sensitivity analyses are conducted and the effects of different system parameters on best found (optimal) policy are presented graphically.</p>","PeriodicalId":14463,"journal":{"name":"International Journal of System Assurance Engineering and Management","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140826740","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}
Pub Date : 2024-04-29DOI: 10.1007/s13198-024-02345-4
Saqib Ul Sabha, Assif Assad, Nusrat Mohi Ud Din, Muzafar Rasool Bhat
The widespread adoption of Convolutional Neural Networks (CNNs) in image recognition has undeniably marked a significant breakthrough. However, these networks need a lot of data to learn well, which can be challenging. This can make models prone to overfitting, where they perform well on training data but not on new data. Various strategies have emerged to address this issue, including reasonably selecting an appropriate network architecture. This study delves into mitigating data scarcity by undertaking a comparative analysis of two distinct methods: utilizing compact CNN architectures and applying transfer learning with pre-trained models. Our investigation extends across three disparate datasets, each hailing from a different domain. Remarkably, our findings unveil nuances in performance. The study reveals that using a complex pre-trained model like ResNet50 yields better results for the flower and Maize disease identification datasets, emphasizing the advantages of leveraging prior knowledge for specific data types. Conversely, starting from a simpler CNN architecture trained from scratch is the superior strategy with the Pneumonia dataset, highlighting the need to adapt the approach based on the specific dataset and domain.
{"title":"From scratch or pretrained? An in-depth analysis of deep learning approaches with limited data","authors":"Saqib Ul Sabha, Assif Assad, Nusrat Mohi Ud Din, Muzafar Rasool Bhat","doi":"10.1007/s13198-024-02345-4","DOIUrl":"https://doi.org/10.1007/s13198-024-02345-4","url":null,"abstract":"<p>The widespread adoption of Convolutional Neural Networks (CNNs) in image recognition has undeniably marked a significant breakthrough. However, these networks need a lot of data to learn well, which can be challenging. This can make models prone to overfitting, where they perform well on training data but not on new data. Various strategies have emerged to address this issue, including reasonably selecting an appropriate network architecture. This study delves into mitigating data scarcity by undertaking a comparative analysis of two distinct methods: utilizing compact CNN architectures and applying transfer learning with pre-trained models. Our investigation extends across three disparate datasets, each hailing from a different domain. Remarkably, our findings unveil nuances in performance. The study reveals that using a complex pre-trained model like ResNet50 yields better results for the flower and Maize disease identification datasets, emphasizing the advantages of leveraging prior knowledge for specific data types. Conversely, starting from a simpler CNN architecture trained from scratch is the superior strategy with the Pneumonia dataset, highlighting the need to adapt the approach based on the specific dataset and domain.\u0000</p>","PeriodicalId":14463,"journal":{"name":"International Journal of System Assurance Engineering and Management","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140826627","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}
Pub Date : 2024-04-29DOI: 10.1007/s13198-024-02351-6
Suryadi Ali, Choesnul Jaqin
Nowadays, each industrial process like installation, manufacturing and service industries process possesses the risk of process failure. The risk of process failure is collected from initial supply chain to final supply chain and the potential failure can affect the supply chain from one to another which is considered as a major problem in industries. In automotive motorcycle industry, the spare parts supply chain supports to generate the automotive vehicle spare parts that require the integration of a supply chain system to avoid delay from one supply chain to another supply chain. The installation process failure occurred due to the damage of one cylinder head product namely perforated cap camshaft so the assembly mechanism is used in the cylinder head for removing cracks on the torque. To overcome the failure and cracks in Cap Camshaft process, the Process Failure Modes and Effects analysis based Automotive Industry Action Group-Verband der Automobilindustrie (PFMEA-AIAG-VDA) version is proposed. The objective of this proposed method is to analyze the casting process and failure of cap camshaft on the cylinder head assembly parts such as camshaft and bolt flange. The optimization result improves the casting process over the porous camshaft cap by using casting process parameters and design of engineering factor analysis. The proposed method shows a positive impact on product output, wherefrom the monitoring is done by casting production for 20,000 shot castings, and there are no spray holes and cracks found in the suspect cap camshaft area so the production targets are achieved.
{"title":"Improvement and reduce risk of failure part -casting by multi-domain matrix- process failure modes and effects analysis based verband der automobilindustrie and design of experiment","authors":"Suryadi Ali, Choesnul Jaqin","doi":"10.1007/s13198-024-02351-6","DOIUrl":"https://doi.org/10.1007/s13198-024-02351-6","url":null,"abstract":"<p>Nowadays, each industrial process like installation, manufacturing and service industries process possesses the risk of process failure. The risk of process failure is collected from initial supply chain to final supply chain and the potential failure can affect the supply chain from one to another which is considered as a major problem in industries. In automotive motorcycle industry, the spare parts supply chain supports to generate the automotive vehicle spare parts that require the integration of a supply chain system to avoid delay from one supply chain to another supply chain. The installation process failure occurred due to the damage of one cylinder head product namely perforated cap camshaft so the assembly mechanism is used in the cylinder head for removing cracks on the torque. To overcome the failure and cracks in Cap Camshaft process, the Process Failure Modes and Effects analysis based Automotive Industry Action Group-Verband der Automobilindustrie (PFMEA-AIAG-VDA) version is proposed. The objective of this proposed method is to analyze the casting process and failure of cap camshaft on the cylinder head assembly parts such as camshaft and bolt flange. The optimization result improves the casting process over the porous camshaft cap by using casting process parameters and design of engineering factor analysis. The proposed method shows a positive impact on product output, wherefrom the monitoring is done by casting production for 20,000 shot castings, and there are no spray holes and cracks found in the suspect cap camshaft area so the production targets are achieved.</p>","PeriodicalId":14463,"journal":{"name":"International Journal of System Assurance Engineering and Management","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140884542","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}
Pub Date : 2024-04-29DOI: 10.1007/s13198-024-02338-3
Admasu Tadesse, Srikumar Acharya, M. M. Acharya, Manoranjan Sahoo, Berhanu Belay
The pressure to conserve the environment as a result of global warming cannot be overstated. The necessity for operational managers to devise a sustainable green inventory stems from the fact that emissions from the production and inventory process contribute extremely to global warming. This study purposes a multi-objective multi-item fuzzy inventory and production management model with green investment in order to conserve the environment. The model is formulated in such a way that all of its ordering quantities (decision variables) and some of the input parameters are fuzzified. All the decision variables and some of the input parameters respectively are trapezoidal fuzzy decision variable and trapezoidal fuzzy number. The developed multi-objective model contains five objectives such as maximizing profit, minimizing total back-ordered quantity, minimizing the holding cost in the system, minimizing total waste produced by the inventory system per cycle and minimizing the total penalty cost due to green investment. Budget constraints, space restrictions, cost constraint on ordering each item, environmental waste disposal restrictions, pollution control costs, electricity consumption costs during production, and green house gas emission costs are among the restraints. To determine the crisp equivalent of this fuzzy model, an expected value method of defuzzification is used. The lexicographic method is applied on the resulting crisp mathematical model to find the compromise solutions. The methodology is demonstrated using a case study and the solution obtained provides a beneficial recommendation to industrial decision-makers.
{"title":"Multi-objective multi-item fuzzy inventory and production management problem involving fuzzy decision variables","authors":"Admasu Tadesse, Srikumar Acharya, M. M. Acharya, Manoranjan Sahoo, Berhanu Belay","doi":"10.1007/s13198-024-02338-3","DOIUrl":"https://doi.org/10.1007/s13198-024-02338-3","url":null,"abstract":"<p>The pressure to conserve the environment as a result of global warming cannot be overstated. The necessity for operational managers to devise a sustainable green inventory stems from the fact that emissions from the production and inventory process contribute extremely to global warming. This study purposes a multi-objective multi-item fuzzy inventory and production management model with green investment in order to conserve the environment. The model is formulated in such a way that all of its ordering quantities (decision variables) and some of the input parameters are fuzzified. All the decision variables and some of the input parameters respectively are trapezoidal fuzzy decision variable and trapezoidal fuzzy number. The developed multi-objective model contains five objectives such as maximizing profit, minimizing total back-ordered quantity, minimizing the holding cost in the system, minimizing total waste produced by the inventory system per cycle and minimizing the total penalty cost due to green investment. Budget constraints, space restrictions, cost constraint on ordering each item, environmental waste disposal restrictions, pollution control costs, electricity consumption costs during production, and green house gas emission costs are among the restraints. To determine the crisp equivalent of this fuzzy model, an expected value method of defuzzification is used. The lexicographic method is applied on the resulting crisp mathematical model to find the compromise solutions. The methodology is demonstrated using a case study and the solution obtained provides a beneficial recommendation to industrial decision-makers.</p>","PeriodicalId":14463,"journal":{"name":"International Journal of System Assurance Engineering and Management","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140884158","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}
Pub Date : 2024-04-27DOI: 10.1007/s13198-024-02337-4
Vaibhav Bisht, S. B. Singh
This research introduces a new method, called Interval ({L}_{z})-transform (ILz), designed to estimate the reliability indices of Multi-State systems (MSS) even when data is uncertain or insufficient. Traditionally, precise values of state probabilities and performance metrics for each component were required, which could be challenging when data is lacking. To address this, the Interval ({L}_{z}) function is proposed, along with corresponding operators, enabling the calculation of interval-valued reliability indices for MSS. To demonstrate the effectiveness of the proposed method, it is applied to a numerical example of a series–parallel system. In this example, we determine interval-valued reliability indices such as reliability, availability, mean expected performance, and expected profit, considering uncertain values for the performance and failure rates of each multi-state component.
{"title":"Interval valued reliability indices assessment of multi-state system using interval $$L_{z}$$ -transform","authors":"Vaibhav Bisht, S. B. Singh","doi":"10.1007/s13198-024-02337-4","DOIUrl":"https://doi.org/10.1007/s13198-024-02337-4","url":null,"abstract":"<p>This research introduces a new method, called Interval <span>({L}_{z})</span>-transform (<i>IL</i><sub><i>z</i></sub>), designed to estimate the reliability indices of Multi-State systems (MSS) even when data is uncertain or insufficient. Traditionally, precise values of state probabilities and performance metrics for each component were required, which could be challenging when data is lacking. To address this, the Interval <span>({L}_{z})</span> function is proposed, along with corresponding operators, enabling the calculation of interval-valued reliability indices for MSS. To demonstrate the effectiveness of the proposed method, it is applied to a numerical example of a series–parallel system. In this example, we determine interval-valued reliability indices such as reliability, availability, mean expected performance, and expected profit, considering uncertain values for the performance and failure rates of each multi-state component.</p>","PeriodicalId":14463,"journal":{"name":"International Journal of System Assurance Engineering and Management","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140812915","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}
Pub Date : 2024-04-25DOI: 10.1007/s13198-024-02339-2
V. S. Iswarya, M. Babima, M. G. Muhila, R. Dhaneesh
{"title":"Enhancing well-being: evaluating the impact of stress management interventions for IT professionals in the workplace","authors":"V. S. Iswarya, M. Babima, M. G. Muhila, R. Dhaneesh","doi":"10.1007/s13198-024-02339-2","DOIUrl":"https://doi.org/10.1007/s13198-024-02339-2","url":null,"abstract":"","PeriodicalId":14463,"journal":{"name":"International Journal of System Assurance Engineering and Management","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140655875","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}
Pub Date : 2024-04-25DOI: 10.1007/s13198-024-02335-6
Kruti Lavingia, Palak Purohit, Vikram Dutta, Ami Lavingia
{"title":"Advancements in automated testing tools for Android set-top boxes: a comprehensive evaluation and integration approach","authors":"Kruti Lavingia, Palak Purohit, Vikram Dutta, Ami Lavingia","doi":"10.1007/s13198-024-02335-6","DOIUrl":"https://doi.org/10.1007/s13198-024-02335-6","url":null,"abstract":"","PeriodicalId":14463,"journal":{"name":"International Journal of System Assurance Engineering and Management","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140654849","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}