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Sustainability performance measurement for Libyan Iron and Steel Company using Rough AHP 利用粗糙层次分析法对利比亚钢铁公司可持续发展绩效进行评估
Pub Date : 2021-12-18 DOI: 10.31181/jdaic1001202222b
I. Badi, Ali M. Abdulshahed
The iron and steel industry plays a major role in Libyan urbanization. Iron and steel products are the main driving forces in the construction manufacturing sector in Libya. This research suggested a set of indicators to evaluate the sustainability of the iron and steel industry in Libya using a rough AHP model. Rough AHP analyses the relative importance of the criteria based on their preferences given by experts. The research results show that the most important criterion is costs followed by emission and waste. We have found that the rough AHP model can play an important role in improving indicators that quantify the advance towards sustainable development, especially when it is in a situation where complex environments (i.e., Libya) exist.
钢铁工业在利比亚的城市化进程中起着重要作用。钢铁产品是利比亚建筑制造业的主要驱动力。本研究提出了一套指标,利用粗略的层次分析法模型来评估利比亚钢铁工业的可持续性。粗略层次分析法根据专家给出的偏好来分析标准的相对重要性。研究结果表明,最重要的评判标准是成本,其次是排放和浪费。我们发现,粗略的AHP模型可以在改善量化可持续发展进展的指标方面发挥重要作用,特别是在复杂环境(即利比亚)存在的情况下。
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引用次数: 15
Prediction of the effective reproduction number of COVID-19 in Greece. A machine learning approach using Google mobility data. 希腊COVID-19有效繁殖数预测。使用谷歌移动数据的机器学习方法。
Pub Date : 2021-05-18 DOI: 10.1101/2021.05.14.21257209
Arvanitis Athanasios, Furxhi Irini, Thomas Tasioulis, Karatzas Konstantinos
This paper demonstrates how a short-term prediction of the effective reproduction number (Rt) of COVID-19 in regions of Greece is achieved based on online mobility data. Various machine learning methods are applied to predict Rt and attribute importance analysis is performed to reveal the most important variables that affect the accurate prediction of Rt. Our results are based on an ensemble of diverse Rt methodologies to provide non-precautious and non-indulgent predictions. The model demonstrates robust results and the methodology overall represents a promising approach towards COVID-19 outbreak prediction. This paper can help health related authorities when deciding non-nosocomial interventions to prevent the spread of COVID-19.
本文演示了如何基于在线流动数据实现对希腊各地区COVID-19有效繁殖数(Rt)的短期预测。应用各种机器学习方法来预测Rt,并进行属性重要性分析以揭示影响Rt准确预测的最重要变量。我们的结果基于各种Rt方法的集合,以提供非预防性和非放纵性预测。该模型显示了稳健的结果,该方法总体上代表了一种有希望的COVID-19爆发预测方法。本文可以为卫生相关部门制定非医院干预措施以防止COVID-19的传播提供帮助。
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引用次数: 8
Approach for multi-criteria ranking of Balkan countries based on the index of economic freedom 基于经济自由指数的巴尔干国家多标准排名方法
Pub Date : 1900-01-01 DOI: 10.31181/jdaic10017022023p
A. Puška, Anđelka Štilić, Ilija Stojanović
Understanding the level of economic freedom is an important indicator for investors and policymakers. The index of economic freedom, which the Heritage Foundation releases annually, is the most significant of the methods used to measure this indicator in practice, as this index evaluates the degree of market openness over the degree of fiscal and regulatory restraint. The research presented in this paper was conducted in order to establish the level of economic freedom in the Balkan countries. For this purpose, a multi-criteria ranking of Balkan countries based on economic freedom criteria was used. The weight of the criteria was determined using the Entropy method, and the countries were ranked using the CRADIS (Compromise Ranking of Alternatives from Distance to ideal Solution) method. These methods employed a double normalisation approach, and according to the results of this application, Bulgaria has the best indicators of economic freedom, while Montenegro has the worst, with sensitivity analysis and validation of the results confirming these findings. The approach of using double normalisation contributes to decision-making stability since the results of different methods are uniform when compared to the use of the classical approach in the case of multi-criteria analysis methods.
了解经济自由水平是投资者和政策制定者的一个重要指标。传统基金会每年发布的经济自由指数是实践中衡量这一指标的最重要的方法,因为该指数评估的是市场开放程度,而不是财政和监管约束程度。本文所进行的研究是为了确定巴尔干国家的经济自由水平。为此目的,采用了基于经济自由标准的巴尔干国家多重标准排名。使用熵法确定标准的权重,并使用CRADIS(从距离到理想解决方案的折衷方案排名)方法对国家进行排名。这些方法采用了双重标准化方法,根据这种应用的结果,保加利亚的经济自由指标最好,而黑山的经济自由指标最差,对结果的敏感性分析和验证证实了这些发现。使用双重归一化的方法有助于决策稳定性,因为与在多标准分析方法的情况下使用经典方法相比,不同方法的结果是统一的。
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引用次数: 29
An approach to multi-attribute decision-making based on intuitionistic fuzzy soft information and Aczel-Alsina operational laws 基于直觉模糊软信息和Aczel-Alsina操作规律的多属性决策方法
Pub Date : 1900-01-01 DOI: 10.31181/jdaic10006062023a
Amir Ali, K. Ullah, Amir Hussain
The intuitionistic fuzzy soft set (IFSS) is a vital technique for tackling uncertainty while the collection of information with the help of the membership function having values from unit interval. Moreover, the Aczel-Alsina t-norm (AATNRM) and Aczel-Alsina t-conorm (AATCRM) are the most generalized and flexible operational laws to operate the information which is the part of the unit intervals. The purpose of this article is to provide a number of aggregation operations (AOs) for information represented by intuitionistic fuzzy soft values (IFSVs) based on AATRM and AATCRM. Therefore, some new operational laws are developed by using on the AATRM and AATCRM for the development of the sum and product laws for IFSVs. Then, intuitionistic fuzzy soft Aczel-Alsina weighted averaging (IFSAAWA) and geometric (IFSAAWG) operators are purposed based on these operational laws. Additionally, some of their characteristics are examined, and the difference of the proposed and existing operators is investigated. Moreover, the proposed approach is applied to the problem of multi-attribute decision-making (MADM) for significance.
直觉模糊软集(IFSS)是在利用单位区间的隶属函数收集信息时处理不确定性的一项重要技术。此外,Aczel-Alsina t-norm (AATNRM)和Aczel-Alsina t- connorm (AATCRM)是对作为单位区间一部分的信息进行运算的最广义和最灵活的运算律。本文的目的是为基于AATRM和AATCRM的直觉模糊软值(ifsv)表示的信息提供一些聚合操作(ao)。因此,在AATRM和AATCRM的基础上,提出了一些新的运行规律,为ifsv的求和和积规律的制定提供了依据。在此基础上,提出了直观模糊软Aczel-Alsina加权平均(IFSAAWA)算子和几何算子。此外,还研究了它们的一些特性,并研究了所提出的运营商与现有运营商的区别。此外,将该方法应用于多属性决策问题,具有重要意义。
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引用次数: 22
A simulation study of single-vendor, single and multiple-manufacturers supply chain system, with stochastic demand and two distribution policies 具有随机需求和两种分配策略的单厂商、单厂商和多厂商供应链系统的仿真研究
Pub Date : 1900-01-01 DOI: 10.31181/jdaic10010052023a
K. Adegbola
This paper addresses the long-standing stochastic single-vendor, multi-manufacturer inventory control problem, using simulation optimization. It is assumed that Manufacturers producing similar goods experience very high random demand; hence, safety stock of raw materials is held in reserve in their warehouses. The vendor supplying this raw material (principal ingredients) as a policy restricts shipments to multiples of full truck load. Thus, it is necessary to take replenishment decision and coordinate delivery among these manufacturers. To solve this problem, we modeled the single vendor, single manufacturer version of the problem (AlDurgam et al., 2017) using simulation optimization techniques, which was validated numerically using parameters and results from AlDurgam et al. (2017). The simulation model was modified systematically to relax the single manufacturer assumption under two distribution policies namely, joint reorder point and vendor managed inventory. These policies were evidently modeled with stringent conditions in literature. A numerical example was provided to compare the performances of the two proposed policies, and the VMI policy was found to performed better in terms of financial savings. Lastly, we investigate the robustness of the famous continuous review (Q, R) inventory policy which is widely used in the mathematical modeling of this problem, against the common cycle assumption. The coefficient of variation is thus suggested as a judgment criterion of when to embrace simulation modeling ahead of other modeling techniques.
本文采用仿真优化方法解决了长期存在的单厂商多厂商随机库存控制问题。假设生产类似商品的制造商经历非常高的随机需求;因此,原材料的安全库存是在仓库中储备的。作为一项政策,供应这种原材料(主要成分)的供应商限制装运数量为满载卡车的数倍。因此,有必要在这些制造商之间做出补充决策并协调交付。为了解决这个问题,我们使用仿真优化技术对单一供应商、单一制造商版本的问题(AlDurgam et al., 2017)进行了建模,并使用AlDurgam et al.(2017)的参数和结果进行了数值验证。在联合再订货点和供应商管理库存两种分销策略下,对仿真模型进行了系统修正,放宽了单一制造商的假设。这些政策在文献中显然是用严格的条件来模拟的。提供了一个数值示例来比较两种建议策略的性能,并发现VMI策略在财务节省方面表现更好。最后,我们研究了在此问题的数学模型中广泛使用的著名的连续回顾(Q, R)库存策略在共同周期假设下的鲁棒性。因此,变异系数被认为是在其他建模技术之前何时采用仿真建模的判断标准。
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引用次数: 3
Automated prediction of income from farming of a commodity: An ARIMA based framework 商品农业收入的自动预测:基于ARIMA的框架
Pub Date : 1900-01-01 DOI: 10.31181/jdaic10021072023k
Soumyadipta Kar, Manas Kumar Mohanty, Parag Kumar Guha Thakurta
In recent research, it has been found that an enormous amount of the population is involved in agriculture. The farmers are increasingly exposed to income risks from the effects of volatility in many factors directly or indirectly related to farming. The prediction of the farmer’s income can be used to manage the income risks by assisting the farmer. This paper proposes an ARIMA-based framework to forecast the income from a crop for the next consecutive years. A detailed analysis of the proposed work on best suitable ARIMA framework is discussed. It is shown that the proposed work obtains a higher accuracy in predicting the income in future over other alternative methods
在最近的研究中,人们发现有大量的人口从事农业。由于与农业直接或间接相关的许多因素波动的影响,农民日益面临收入风险。农民收入预测可以帮助农民管理收入风险。本文提出了一个基于arima的框架来预测作物未来连续几年的收入。详细分析了提出的最合适的ARIMA框架的工作。结果表明,与其他方法相比,本文所提出的方法在预测未来收入方面具有更高的准确性
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引用次数: 3
Image pattern recognition by edge detection using discrete wavelet transforms 基于离散小波变换的图像边缘检测模式识别
Pub Date : 1900-01-01 DOI: 10.31181/jdaic10029042022k
R. Divakar, Bijendra K. Singh, A. Bajpai, Anil Kumar
Edge is the high-frequency part of an image and represents location where abrupt change takes place in the intensity of luminescence. Edge detection is the basic step of the feature extraction and pattern recognition of any image. Wavelet transforms extract low and high-frequency information of any signal separately. In two-dimensional wavelet transforms, an image is decomposed into four sub-images the one approximation image and three different images (horizontal, vertical, and diagonal images) in each decomposition level. The differences’ images show how the neighboring pixels differ in the horizontal, vertical and diagonal directions. The approximation coefficients are forced to zero and differences’ coefficients are inverse wavelet transformed. As the reconstructed image shows the edges of the image and describes its pattern. Using Haar wavelet at decomposition level 1, 2 and 3, the image pattern recognition by edge detection is performed and discussed.
边缘是图像的高频部分,表示发光强度发生突变的位置。边缘检测是图像特征提取和模式识别的基本步骤。小波变换分别提取任意信号的低频和高频信息。在二维小波变换中,一幅图像被分解为四个子图像,即每个分解层的一个近似图像和三个不同的图像(水平、垂直和对角图像)。差异图像显示了相邻像素在水平、垂直和对角线方向上的差异。逼近系数被强制为零,差分系数被反小波变换。由于重构图像显示了图像的边缘并描述了其模式。利用Haar小波在分解层1、2、3进行了图像的边缘检测模式识别。
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引用次数: 4
Mining of association rules for treatment of dental diseases 牙病治疗关联规则的挖掘
Pub Date : 1900-01-01 DOI: 10.31181/jdaic10028042022c
S. Chakraborty, B. Mallick, Santonab Chakraborty
A prior knowledge regarding the effectiveness of each of the medicines prescribed by a physician would be quite helpful to a patient for rapid recovery from a particular disease. In this paper, an attempt is put forward to develop the related association rules for understanding the roles of different types of medicines prescribed for treatment of dental diseases, especially tooth pain (odontalgia/dentalgia) and swelling of tooth (pericoronitis). 75 patient cases from a dentist are analyzed to determine the average number of different types of medicines prescribed, average number of medicines and average cost of treatment, and to mine the corresponding association rules. It is observed from 1-item dataset that antibiotic#1 is the most preferred medicine, followed by antiseptic. Similarly, the 2-item dataset shows that the most preferred combination on medicines is {antibiotic#1, antiseptic}, followed by {antibiotic#1, anti-reflux}. Among all the association rules developed, the rule (If antibiotic#1 and antibiotic#2 and antiseptic, then anti-reflux) appears with the maximum strength.
事先知道医生开的每一种药的疗效,对病人从某种疾病中迅速康复是非常有帮助的。本文试图建立相关的关联规则,以了解不同类型的药物在治疗牙病,特别是牙齿疼痛(牙痛)和牙齿肿胀(冠周炎)中的作用。对某牙医75例患者进行分析,确定不同类型药物的平均处方数量、平均用药数量和平均治疗费用,并挖掘相应的关联规则。从单项目数据中可以观察到,抗生素#1是最受欢迎的药物,其次是防腐剂。同样,2项数据集显示,最受欢迎的药物组合是{抗生素#1,抗菌剂},其次是{抗生素#1,抗反流}。在所有开发的关联规则中,规则(如果抗生素#1和抗生素#2和防腐剂,则抗反流)出现的强度最大。
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引用次数: 7
A selection of level of supplier in supply chain management using binary coded genetic algorithm with a case study towards Pareto optimality 基于二进制编码遗传算法的供应链供应商水平选择,并以Pareto最优为例
Pub Date : 1900-01-01 DOI: 10.31181/jdaic10015072023s
Deepanjali Sahoo, A. Tripathy, J. K. Pati, P. K. Parida
In this work, authors discuss the way of selecting level of supplier by using the concept of binary coded genetic algorithm. For the best solution due to involvement of multi objective functions, the process of Tournament selection is widely discussed. In addition to this, authors involve fuzzy parameters due to the aspiration levels of Decision maker in analysis part for more clarity towards optimality. As a case study towards pareto optimality, the theory of non-dominance of solutions is properly discussed with the help of Pareto frontier. At last the values of objective functions based on quality, cost and service levels following an example are being analyzed with a significant view towards optimality. Based on the optimal solutions, the level of supplier selection is properly discussed.
本文利用二进制编码遗传算法的概念,讨论了供应商等级的选择方法。针对多目标函数参与下的最优解,广泛讨论了比赛选择的过程。除此之外,作者还在分析部分引入了由于决策者期望水平的模糊参数,以便更清晰地实现最优性。作为帕累托最优问题的研究实例,本文借助帕累托边界对非优解理论进行了适当的讨论。最后,通过实例分析了基于质量、成本和服务水平的目标函数的值,并对最优性进行了分析。在此基础上,适当地讨论了供应商选择的水平。
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引用次数: 1
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Journal of Decision Analytics and Intelligent Computing
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