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Load Redistribution-based Reliability Enhancement for Storage Area Networks 基于负载再分配的存储区域网络可靠性增强
IF 1.6 Q1 Mathematics Pub Date : 2023-02-01 DOI: 10.33889/ijmems.2023.8.1.001
Guixiang Lv, L. Xing, Honggang Wang, Hong Liu
Storage area networks (SANs) are one of the prevalent reliable data storage solutions. However, cascading failures triggered by data overloading have become a major threat to SANs, preventing the desired quality of service from being delivered to users. Based on our preliminary works on studying the impacts of data loading on the reliability performance of SANs, this paper advances the state of the art by implementing node degree-based load redistribution strategies to enhance the SAN reliability, thus mitigating or even preventing the occurrence of cascading failures during the mission time. Load-based and reliability-based node selection rules are considered, which choose nodes with the highest load level and the lowest reliability for load redistribution, respectively. The relationship between data loading and reliability of an individual SAN component is modeled using the accelerated failure-time model with the power law. The SAN reliability is assessed using a combinatorial decision diagram-based approach. The application and effectiveness of the proposed load redistribution strategies are demonstrated and compared through a case study of an SAN with the mesh topology.
存储区域网络(SAN)是流行的可靠数据存储解决方案之一。然而,数据过载引发的级联故障已成为SAN的主要威胁,阻碍了向用户提供所需的服务质量。在我们研究数据负载对SAN可靠性性能影响的初步工作的基础上,本文通过实施基于节点度的负载再分配策略来提高SAN的可靠性,从而减轻甚至防止任务期间级联故障的发生,从而提高了技术水平。考虑了基于负载和基于可靠性的节点选择规则,分别选择负载级别最高和可靠性最低的节点进行负载再分配。使用具有幂律的加速故障时间模型对单个SAN组件的数据负载和可靠性之间的关系进行建模。使用基于组合决策图的方法来评估SAN的可靠性。通过对具有网状拓扑结构的SAN的实例研究,验证并比较了所提出的负载再分配策略的应用和有效性。
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引用次数: 0
Simulation of Supply Chain Performance in the Period of Implicit Uncertainty using Cellular Automata 隐式不确定性时期供应链绩效的元胞自动机模拟
IF 1.6 Q1 Mathematics Pub Date : 2023-02-01 DOI: 10.33889/ijmems.2023.8.1.010
R. Suryawanshi, R. Deore
Managing a distribution planning problem in an integrated supply chain environment is daunting. These challenges are aggravated when there are multiple stakeholders involved. The proposed simulation model provides an environment to gauge the existing adversities in the distribution plan of a two-stage supply chain (SC) network. In addition to the underlined issues, the model captures the influence of decisions from neighboring firms in a periodical decision-making plan. A cellular automaton (CA) based approach is implemented to present the complete analysis and impact of endogenous and exogenous situations affecting the decision-making. The decision environment involves two states of selecting an efficient supply chain strategy (ESC) and responsive supply chain strategy (RSC) based on the implicit uncertainty and performance of Moore-based neighboring cells. The study contributes to the scant literature on the application of CA-based evolutionary decisions in the SC context. The simulation model characterizes the neighboring firm's influences in strategic decision-making and the implicit uncertainty in supply and demand. The modeling framework is tested with a significantly larger set, and the results are graphically presented to provide further clarity.
在集成供应链环境中管理分销计划问题是令人生畏的。当涉及多个利益攸关方时,这些挑战就会加剧。所提出的仿真模型提供了一个环境来衡量两阶段供应链网络分销计划中存在的不利因素。除了强调的问题外,该模型还捕捉了周期性决策计划中邻近企业决策的影响。实现了一种基于元胞自动机(CA)的方法,以全面分析影响决策的内生和外源情况的影响。决策环境包括两种状态,即基于基于Moore的相邻单元的隐含不确定性和性能来选择有效供应链策略(ESC)和响应供应链战略(RSC)。该研究有助于减少基于CA的进化决策在SC环境中的应用文献。该仿真模型描述了相邻企业在战略决策中的影响以及供需中隐含的不确定性。建模框架用一个明显更大的集合进行了测试,结果以图形形式呈现,以提供进一步的清晰度。
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引用次数: 0
Risk Managed Cloud Adoption: An ANP Approach 风险管理的云采用:ANP方法
IF 1.6 Q1 Mathematics Pub Date : 2023-02-01 DOI: 10.33889/ijmems.2023.8.1.005
Shikha Gupta, S. Pani, K. Muduli, A. Vaish, Ashok Kumar
To meet the ever-increasing demand for offering a sustainable environment, organizations are beginning to aim for cloud adoption and the migration of their IT infrastructure and operations to the cloud, utilizing various cloud-based technologies. However, cloud adoption has been impeded by the risk of being exposed as a result of a variety of concerns, including performance, security, and privacy concerns, as well as vulnerabilities and data portability. As a result, this study was carried out to investigate and analyse a variety of risks that come with cloud computing adoption by estimating the impact and frequency of these hazards. In this study, the Analytical Network Process (ANP) is used to prioritise these hazards. Prioritization of these risks based on their influence on cloud adoption may be useful for organizations in building a corrective action plan. According to their negative influence on cloud adoption, "business continuity and recovery planning" and "poor availability of services" are shown to be the most prominent hazards. This research also found that the two most common dangers encountered by cloud adopters in India are "poor availability of services" and "slow response rate."
为了满足对提供可持续环境日益增长的需求,各组织开始致力于采用云,并利用各种基于云的技术将其IT基础设施和运营迁移到云。然而,由于各种问题,包括性能、安全和隐私问题,以及漏洞和数据可移植性,云的采用受到了暴露风险的阻碍。因此,本研究旨在通过估计这些危害的影响和频率,调查和分析采用云计算带来的各种风险。在本研究中,分析网络过程(ANP)用于优先考虑这些危险。根据这些风险对云采用的影响对其进行优先级排序可能有助于组织制定纠正行动计划。根据它们对云采用的负面影响,“业务连续性和恢复规划”和“服务可用性差”被证明是最突出的危害。这项研究还发现,印度云用户遇到的两个最常见的危险是“服务可用性差”和“响应速度慢”
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引用次数: 0
Generalized Second-Order G-Wolfe Type Fractional Symmetric Program and their Duality Relations under Generalized Assumptions 广义二阶G-Wolfe型分数对称规划及其在广义假设下的对偶关系
IF 1.6 Q1 Mathematics Pub Date : 2023-02-01 DOI: 10.33889/ijmems.2023.8.1.009
Arvind Kumar, Rajnish Kumar, Naresh Kumar, Khursheed Alam, Ramu Dubey
In this article, we formulate the concept of generalize bonvexity/pseudobonvexity functions. We formulate duality results for second-order fractional symmetric dual programs of G-Wolfe-type model. In the next section, we explain the duality theorems under generalize bonvexity/pseudobonvexity assumptions. We identify a function lying exclusively in the class of generalize pseudobonvex and not in class of generalize bonvex functions. Our results are more generalized several known results in the literature.
在本文中,我们提出了广义凸函数/拟凸函数的概念。我们给出了G-Wolfe型模型的二阶分式对称对偶程序的对偶结果。在下一节中,我们将解释在广义凸性/伪凸性假设下的对偶定理。我们确定了一个函数只存在于广义伪凸函数类中,而不存在于广义凸函数类。我们的结果是文献中几个已知结果的更广义结果。
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引用次数: 0
Evaluating Biofuel Energy Policies for Sustainable Transportation Sector: A System Dynamics Approach 可持续交通部门生物燃料能源政策评估:系统动力学方法
IF 1.6 Q1 Mathematics Pub Date : 2023-02-01 DOI: 10.33889/ijmems.2023.8.1.008
V. Mahate, Anand Bisen, S. Vishwakarma, S. Avikal, R. Jain
Energy is vital for techno-socio-economic development of global transportation sector. A country’s energy policy will aim to provide an appropriate mix of resources to meet its energy demand. Biofuels have emerged as an alternative to meet the energy requirements. The contribution of this study is the evaluation of sustainable biofuel energy policies to increase the usage of biofuels in the transport sector without affecting the country's food security and to achieve social, economic and environmental benefits. The successful implementation of complex relationship between the factors influencing the production and use of biofuels is also addressed. In the present work, a system dynamics model has been developed to evaluate biofuel production focusing food security and to assess its impact on the economy and the environment. Simulation results have shown that the maximum biodiesel blending between 3.03% to 11.01% is possible without impacting the food security. It has been noted that 20% or less of biodiesel blends can be used as direct replacements for diesel fuel in all heavy-duty diesel vehicles without any alteration or modification of their engines. It has been demonstrated that biofuel blending strategies have a positive impact on the reduction of CO2 emission in the Indian transport sector.
能源对全球运输部门的技术社会经济发展至关重要。一个国家的能源政策将旨在提供适当的资源组合以满足其能源需求。生物燃料已经成为满足能源需求的一种替代品。本研究的贡献在于评估可持续生物燃料能源政策,以在不影响国家粮食安全的情况下增加运输部门生物燃料的使用,并实现社会、经济和环境效益。还讨论了影响生物燃料生产和使用的因素之间的复杂关系的成功实施。在目前的工作中,开发了一个系统动力学模型来评估以粮食安全为重点的生物燃料生产,并评估其对经济和环境的影响。模拟结果表明,在不影响粮食安全的情况下,生物柴油的最大掺量在3.03% ~ 11.01%之间是可能的。已经注意到,20%或更少的生物柴油混合物可以用作所有重型柴油车辆的柴油燃料的直接替代品,而无需对其发动机进行任何更改或修改。已经证明,生物燃料混合战略对减少印度运输部门的二氧化碳排放具有积极影响。
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引用次数: 0
Studying Multi-Stage Diffusion Dynamics using Epidemic Modeling Framework 基于流行病建模框架的多阶段扩散动力学研究
IF 1.6 Q1 Mathematics Pub Date : 2023-02-01 DOI: 10.33889/ijmems.2023.8.1.007
H. Kumar, Ompal Singh, Adarsh Anand, M. S. Irshad
Buying process has always carried a two-fold perspective with itself. On one hand, it is important for individuals and on other hand it is equally important for the firms to deliver the perfect need and want to the customer. Amongst this entire process, awareness along with positive motivation towards the product; plays an equally significant role in strategizing the plans for any company. Plenty of models have been proposed and many would be in the pipeline that have talked about the connectivity of these processes and their impact on the final adoption. In the current work, these processes have been studied through the analogy taken from epidemic modelling framework. Furthermore, an approximation method; Range Kutta of 4th order has been utilized to come to a near approximate solution to the otherwise available non-closed form solution. The proposed modelling framework is validated on real-life data sets and the results depict the existence and presence of various stages under consideration.
购买过程本身总是带有双重视角。一方面,这对个人来说很重要,另一方面,对公司来说,向客户提供完美的需求和愿望同样重要。在整个过程中,意识和对产品的积极动机;在任何公司的战略计划中都扮演着同样重要的角色。已经提出了许多模型,其中许多模型正在筹备中,它们讨论了这些过程的连通性及其对最终采用的影响。在目前的工作中,这些过程是通过从流行病建模框架中获得的类比来研究的。进一步,采用近似方法;利用4阶的范围库塔来得到一个接近的近似解,否则可用的非封闭形式解。所提出的建模框架在实际数据集上进行了验证,结果描述了所考虑的各个阶段的存在和存在。
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引用次数: 0
Blockchain in Supply Chain Management: A Synthesis of Barriers and Enablers for Managers 供应链管理:管理人员的障碍和促进因素的综合
IF 1.6 Q1 Mathematics Pub Date : 2023-02-01 DOI: 10.33889/ijmems.2023.8.1.002
Huzaifa Kafeel, Prof Vikas Kumar, L. Duong
Blockchain is an emerging and disruptive technology and has the potential to change how supply chains manage their information. However, Blockchain is accompanied by challenges, such as increased information technology complexity, issues of scalability, incompatibility with existing laws and regulations, and a lack of awareness among organisations and customers. This research conducts a bibliometric analysis based on a sample of 68 papers which address the barriers and enablers of blockchain adoption in supply chain management. A recurring theme in the papers was managers’ lack of understanding of Blockchain, which acted as a barrier to adoption. This study proposes a possible explanation by arguing that the academic models used in literature are too obscure from a manager’s perspective and that there is a need to synthesise literature into a framework which is easily understood and familiar. Therefore, the barriers and enablers identified in this study were grouped into the robust Political, Economic, Social, Technological, Legal, and Environment (PESTLE) framework. A key finding from this framework was the absence of political barriers or enablers, which is surprising since blockchain adoption challenges the current status quo in multiple ways. Furthermore, the environmental enablers and barriers were scarcely discussed, with little empirical evidence.
区块链是一项新兴的颠覆性技术,有可能改变供应链管理信息的方式。然而,区块链也伴随着挑战,例如信息技术复杂性的增加、可扩展性的问题、与现有法律法规的不兼容性,以及组织和客户缺乏意识。本研究基于68篇论文的样本进行了文献计量分析,这些论文解决了供应链管理中采用区块链的障碍和推动因素。论文中反复出现的一个主题是,管理者对区块链缺乏理解,这成为了采用区块链的障碍。本研究提出了一种可能的解释,认为从管理者的角度来看,文献中使用的学术模型过于模糊,需要将文献综合成一个易于理解和熟悉的框架。因此,本研究中确定的障碍和推动因素被归类为强大的政治、经济、社会、技术、法律和环境(PESTLE)框架。该框架的一个关键发现是没有政治障碍或促成因素,这令人惊讶,因为区块链的采用在多个方面挑战了当前的现状。此外,环境的促成因素和障碍几乎没有讨论,几乎没有经验证据。
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引用次数: 3
Robust Facility Location of Container Clinics: A South African Application 集装箱诊所的稳健设施位置:南非的应用
IF 1.6 Q1 Mathematics Pub Date : 2023-02-01 DOI: 10.33889/ijmems.2023.8.1.003
C. Karsten, W. Bean, Q. V. Heerden
There is a lack of dynamic facility location models for developing countries that consider the changes in the problem environment over time, such as patient population and population migration. Therefore, this paper focuses on using optimization and goal programming to locate health care facilities in an uncertain environment using multiple possible future urban development senarios. To achieve this, a robust multi-objective facility location model is developed and used to determine locations for container clinic deployment over multiple years in selected communities in South Africa. A synthetic population and urban growth simulation model are used to estimate population density and distribution from 2018 to 2030 for three development senarios. The results from the urban growth simulation model are then used as input into the facility location model to locate facilities whilst considering the three future development scenarios. Results of the model indicate that the robust model can be used to find locations that provide a relatively good solution to all considered development scenarios, providing key role players with quantitative decision support during network design under uncertainty. An accessibility analysis investigates the impact of the prescribed accessibility percentage on model results and a budget analysis evaluates the impact of a case that includes a budget constraint. From these two analyses it is illustrated that the model is sensitive to changes in parameters and that the model can be used by key stakeholders to combine network design and urban development planning for improved decision making.
发展中国家缺乏考虑问题环境随时间变化的动态设施选址模型,例如患者人数和人口迁移。因此,本文的重点是利用优化和目标规划,在不确定的环境中,利用多种可能的未来城市发展情景来定位医疗机构。为了实现这一目标,开发了一个强大的多目标设施选址模型,并用于确定南非选定社区多年来集装箱诊所部署的地点。利用人口与城市增长综合模拟模型,对2018 - 2030年三种发展情景下的人口密度和分布进行了预测。然后将城市增长模拟模型的结果作为设施选址模型的输入,在考虑三种未来发展情景的同时对设施进行选址。模型结果表明,鲁棒模型可用于寻找为所有考虑的开发场景提供相对较好的解决方案的位置,为关键角色在不确定的网络设计过程中提供定量决策支持。可访问性分析调查规定的可访问性百分比对模型结果的影响,预算分析评估包含预算约束的情况的影响。从这两个分析中可以看出,该模型对参数的变化很敏感,并且该模型可以被关键利益相关者用来将网络设计和城市发展规划结合起来,以改进决策。
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引用次数: 0
Dimension Reduced Modeling of Blood Flow in Large Arteries 大动脉血流的降维建模
IF 1.6 Q1 Mathematics Pub Date : 2023-01-01 DOI: 10.1007/978-3-031-33087-2
T. Köppl, R. Helmig
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引用次数: 0
Optimization Methods in Mathematical Modeling of Technological Processes 工艺过程数学建模中的优化方法
IF 1.6 Q1 Mathematics Pub Date : 2023-01-01 DOI: 10.1007/978-3-031-35339-0
A. Vagaská, M. Gombár, A. Panda
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引用次数: 0
期刊
International Journal of Mathematical Engineering and Management Sciences
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