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Designing a new model for the hub location-allocation problem with considering tardiness time and cost uncertainty 考虑延误时间和成本不确定性的枢纽选址问题的新模型设计
IF 4.8 Q1 Engineering Pub Date : 2023-01-02 DOI: 10.1080/17509653.2022.2089261
Pardis Roozkhosh, Nasser Motahari Farimani
ABSTRACT This paper has addressed the new model for the hub location-allocation problem that can evaluate the impact of cost and time of tardiness in delivering goods to the destination, find the optimal number of hubs and vehicles with different capacities, and congestion in hubs. In addition, this study investigates the problem from two perspectives: scheduled time and real-time. Also, it compares the problem in circumstances with tardiness and solves the problem with two objective functions by minimizing the total costs, handling time, and delay time caused by congestion in the hubs. Moreover, the uncertainty of transportation costs and hub establishment are considered. For this purpose, the Monte-Carlo simulation is used. Due to the models being non-convex and non-derivative, they are NP-hard. So, the models are solved with the particle swarm optimization (PSO) algorithm. The models are tested on Australian Post (AP) data for single and multiple allocations. Also, we presented a model that can illustrate the effect of tardiness on the results and service time. The results show multiple allocation than single ones needs the smaller hubs and cheaper vehicles for transportation due to access the nodes to several hubs.
摘要:本文提出了一种新的枢纽选址问题模型,该模型可以评估货物延迟到达目的地的成本和时间的影响,找到不同容量的枢纽和车辆的最优数量,以及枢纽的拥塞情况。此外,本研究还从计划时间和实时性两个角度探讨了这一问题。并将问题与延误情况进行比较,通过最小化总成本、处理时间和枢纽拥堵导致的延误时间两个目标函数来解决问题。此外,还考虑了运输成本和枢纽建设的不确定性。为此,使用蒙特卡罗模拟。由于模型是非凸的和非导数的,它们是np困难的。采用粒子群优化算法对模型进行求解。这些模型在澳大利亚邮政(AP)的单次和多次分配数据上进行了测试。此外,我们还提出了一个模型,可以说明延误对结果和服务时间的影响。结果表明,多节点分配比单节点分配需要更小的枢纽和更便宜的交通工具,因为节点可以访问多个枢纽。
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引用次数: 6
A PDCA based approach to evaluate green supply chain management performance under fuzzy environment 模糊环境下基于PDCA的绿色供应链管理绩效评价方法
IF 4.8 Q1 Engineering Pub Date : 2023-01-02 DOI: 10.1080/17509653.2022.2027292
S. Ghosh, M. Mandal, A. Ray
ABSTRACT This paper proposes a novel plan-do-check-act (PDCA) based group decision making model to evaluate the GSCM performance of manufacturing organizations. This research employs an integrated fuzzy multi-criteria decision-making (MCDM) approach in which the fuzzy-analytical hierarchy process (FAHP) method determines criteria weights and the fuzzy-technique for order preference by similarity to the ideal solution (FTOPSIS) method ranks the organizations. Five qualitative criteria are selected from the extant literature, which encompass both environmental, operational, and economic aspects of sustainability. Data is collected by developing a questionnaire, establishing a decision-makers’ committee, and carrying out a survey. To illustrate the industrial application of the proposed model, this study considers a real-world case study in the Indian manufacturing sector, in which three organizations (Organization A, Organization B, and Organization C) are selected from three distinct industrial segments, namely the leather industry, the pharmaceutical industry, and the steel industry, respectively. The result reveals that the environmental impact of harmful substances released from production is the most influential parameter. The result also reveals that Organization C is the benchmark organization and its strategies can guide other organizations for GSCM performance improvement. Moreover, the proposed model is capable of handling vagueness and ambiguity in decisions.
摘要本文提出了一种新的基于PDCA的集团决策模型来评估制造组织的GSCM绩效。本研究采用了一种综合模糊多准则决策方法,其中模糊层次分析法(FAHP)确定准则权重,通过与理想解的相似性确定订单偏好的模糊技术(FTOPSIS)对组织进行排序。从现存文献中选择了五个定性标准,包括可持续性的环境、运营和经济方面。数据是通过制定问卷、成立决策者委员会和进行调查来收集的。为了说明所提出模型的工业应用,本研究考虑了印度制造业的真实案例研究,其中从三个不同的工业部门中选择了三个组织(组织a、组织B和组织C),分别是皮革行业、制药行业和钢铁行业。结果表明,生产过程中释放的有害物质对环境的影响是影响最大的参数。研究结果还表明,C组织是基准组织,其战略可以指导其他组织改进GSCM绩效。此外,所提出的模型能够处理决策中的模糊性和歧义性。
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引用次数: 18
An integrated production–distribution optimization model for multinational manufacturing corporations 跨国制造企业生产-分销一体化优化模型
IF 4.8 Q1 Engineering Pub Date : 2022-12-28 DOI: 10.1080/17509653.2022.2157900
M. K. Bhutta, Omar I. Alhawari, Zubair M. Mohamed
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引用次数: 1
Pricing and advertising in dual-channel supply chains: real applications for coffee processing and distribution companies 双渠道供应链中的定价和广告:对咖啡加工和分销公司的实际应用
IF 4.8 Q1 Engineering Pub Date : 2022-12-28 DOI: 10.1080/17509653.2022.2157902
Dariush Mohamadi, Milad Mohammadi
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引用次数: 1
A decision support model to assess organizational resilience in the textile industry 纺织行业组织弹性评估的决策支持模型
IF 4.8 Q1 Engineering Pub Date : 2022-12-19 DOI: 10.1080/17509653.2022.2157901
Shahariar Rahman, N. Hossain, Md. Abdul Moktadir, Syed Mithun ali, Polinpapilinho F. Katina, Md. Saiful Islam
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引用次数: 3
A mathematical model for optimizing pricing-inventory, and advertising frequency decisions with a multivariate demand function and a time-dependent holding-cost function 多元需求函数和含时持有成本函数优化库存定价和广告频率决策的数学模型
IF 4.8 Q1 Engineering Pub Date : 2022-11-22 DOI: 10.1080/17509653.2022.2125452
Behnaz Gharakhani, Mahsa Ghandehari, A. Ansari
ABSTRACT This article investigates inventory replenishment, advertising, and pricing decisions for perishable products with fixed expiration dates. Specifically, the problem is modelled using mixed-integer nonlinear programming to maximize the retailer’s total profit on an infinite planning horizon. Several assumptions are made to formulate the problem: i) the demand is considered a multivariate function of freshness, selling price, displayed inventory level, and advertisement frequency; ii) the holding cost of inventory increases linearly as the product ages; iii) the ending inventory is not necessarily zero. A search algorithm is proposed to solve this problem. The impact of each parameter on the optimal solution is investigated using sensitivity analysis. The advertising frequency determined via this model is an optimal compromise between advertising costs and yield. This model can be applied to reduce perishable food waste and meet the rising demand for fresh food.
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引用次数: 2
A dynamic ordering policy for a three echelon supply chain with backordering for perishable goods 易腐货物延期订货的三级供应链动态订货策略
IF 4.8 Q1 Engineering Pub Date : 2022-10-24 DOI: 10.1080/17509653.2022.2134222
J. Razmi, Fazle Baki, A. Sabbaghnia
ABSTRACT Inventory management considering back-ordering policy is becoming a more effective strategy for balancing limited supply with unpredictable demand. Back-logging of inventory is widespread in numerous businesses, including manufacturing, airline, spare part service, and retail industries. This paper develops a control-theoretical method, Smith predictor, for continuous review inventory systems for perishable items with backordering and multi-supplier supply chain. The proposed model aims to respond quickly to market demand changes and generates different orders to smooth and reduce the bullwhip effect in a reasonable time. This modified control theory eases the flow of information in inventory systems. Finally, the block diagram is used to simulate a three-echelon supply chain for perishable products where backorder is allowed. The proposed model is examined and verified using Normal, Exponential, and Gamma distribution demands in MATLAB’s Simulink. The results illustrate that the proposed model is consistent with the Exponential distribution.
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引用次数: 2
System design of outpatient chemotherapy oncology departments through simulation and design of experiments 通过模拟和实验设计对肿瘤门诊化疗系统进行设计
IF 4.8 Q1 Engineering Pub Date : 2022-10-21 DOI: 10.1080/17509653.2022.2134223
R. Corsini, A. Costa, S. Fichera, A. Pluchino, V. Parrinello
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引用次数: 2
Entrepreneurship, Creativity and Innovation 创业、创造和创新
IF 4.8 Q1 Engineering Pub Date : 2022-10-18 DOI: 10.36647/ijsem/09.10.a012
F. AlBawardi
In March 2021, the Saudi Arabian Council of Ministers issued a decision to form a committee called the “Higher Committee for Research, Development and Innovation,” a committee linked to the Council of Economic and Development Affairs, chaired by the Chairman of the Council of Economic and Development Affairs, and concerned with the development of the research, development and innovation sector in the Kingdom. In order to talk about the dimensions of this wonderful step, let us first try to answer the following questions... Is there a difference between Creativity and Innovation...? How do they enable Entrepreneurship...? What are the factors of creativity in the individual.. Are they mental genetic factors.. or are they factors that an individual acquires through learning...? The methodology included surveys that have been conducted on more than 300 individuals, males and females, between the ages of 18 till 60. And the answer is.. “Creativity” is the creation of a new idea, while “Innovation” is the development of an already existing idea in a new, successful way. They are two sides of the same coin, as the “creative idea” needs to be developed and transformed into an “innovation” in order to achieve either strategic achievements at the level of countries and institutions to enhance organizational intelligence, or achievements at the level of individuals. For example, the beginning of smart phones was just a creative idea from IBM in 1994, but the actual successful innovation for the manufacture, development and marketing of these phones was through Apple later. Nor does creativity have to be hereditary. There are three basic factors for creativity: The first factor is “the presence of a challenge or an obstacle” that the individual faces and seeks thinking to find solutions to overcome, even if thinking requires a long time. The second factor is the “environment surrounding” of the individual, which includes science, training, experience gained, the ability to use techniques, as well as the ability to assess whether he idea is feasible or otherwise. To achieve this factor, the individual must be aware of own skills, strengths, hobbies, and aspects in which one can be creative, and the individual must also be self-confident and courageous enough to suggest those new ideas. The third factor is “Experience and the Ability to Accept Risk and Lack of Initial Success,” and then learn from mistakes and try again tirelessly. There are some tools and techniques that help the entrepreneurship/individual to reach creative and innovative ideas, such as: Mind Maps tool, through which the available information is drawn by writing a short word for each piece of information and arranging all other relevant information through clear lines, which helps in logical thinking and correct vision. There is also a tool called "Flow Charts", which are graphics that show the sequence of data and expected results according to an ordered scenario of events and workflow ste
2021年3月,沙特阿拉伯部长理事会决定成立一个名为“研究、发展和创新高级委员会”的委员会,该委员会与经济和发展事务委员会有联系,由经济和发展事务委员会主席担任主席,负责沙特王国的研究、发展和创新部门的发展。为了讨论这一美妙步骤的维度,让我们首先尝试回答以下问题……创造力和创新有区别吗?他们是如何实现创业的?个人创造力的因素是什么?是心理遗传因素吗?还是个体通过学习获得的因素?该方法包括对300多名年龄在18岁至60岁之间的男性和女性进行的调查。答案是……“创造力”是创造一个新想法,而“创新”是用一种新的、成功的方式发展一个已经存在的想法。它们是同一枚硬币的两面,因为“创意”需要发展并转化为“创新”,以实现国家和机构层面的战略成就,以提高组织智力,或者个人层面的成就。例如,智能手机的开始只是1994年IBM的一个创意,但这些手机的制造,开发和营销的实际成功创新是通过后来的苹果。创造力也不一定是遗传的。创造力有三个基本因素:第一个因素是个人面临的“挑战或障碍的存在”,并寻求思考来找到克服的解决方案,即使思考需要很长时间。第二个因素是个人所处的“环境”,包括科学、培训、获得的经验、使用技术的能力,以及评估想法是否可行的能力。为了实现这一目标,个人必须意识到自己的技能、优势、爱好和可以发挥创造力的方面,并且个人还必须有足够的自信和勇气提出这些新想法。第三个因素是“经验和接受风险和缺乏初步成功的能力”,然后从错误中学习,并不知疲倦地再次尝试。有一些工具和技术可以帮助企业家/个人达到创造性和创新的想法,例如:思维导图工具,通过每个信息写一个简短的单词,并通过清晰的线条排列所有其他相关信息,从而绘制可用的信息,这有助于逻辑思维和正确的视觉。还有一种叫做“流程图”的工具,它是一种图形,根据事件和工作流步骤的有序场景显示数据序列和预期结果,使想法、它们的顺序以及对它们的期望变得清晰。还有其他伟大的工具,如六顶帽子工具,一个有用的工具,用于一群人有效的计划和详细的逻辑思维,以及雪球工具。所有这些工具都能极大地帮助我们组织和安排思想,做出正确的决定。它也很容易学习,应用和使用所有这些工具和技术,以达到创造性和创新的解决方案。所进行的调查的详细数字和结果可应要求提供,并附有图表,显示按性别、年龄组和工作类别划分的百分比。
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引用次数: 0
Governance Related Challenges in the Operation of Mobile Telecommunication Industry in Bangladesh 孟加拉国移动电信行业运营中与治理相关的挑战
IF 4.8 Q1 Engineering Pub Date : 2022-10-18 DOI: 10.36647/ijsem/09.10.a004
Dr. Yesmin Sultana, Dr. Mohiuddin Md, J. Shaown
The mobile telecommunication Industry in Bangladesh is conquered by only four players: Grameenphone, Banglalink, Robi Axiata and finally the state-owned company Teletalk. The oligopolistic nature of this industry in Bangladesh offers a fascinating prospect to study. Bangladesh positioned 5th in Asia Pacific Region and 8th globally in terms of market size for the inimitable mobile subscriber. The mobile telecommunication industry contributed GDP is 1.8% of the country through their voice call and internet. The mobile telecommunication industry is in gush for the increasing demand of smartphone as time progress. This industry is also contributing 30% job opportunities in the country. The aim of this paper is to highlight the main governance related challenges being faced by the companies operating in this industry. The data were mainly collected by captivating interviews with the company CEO, Company Secretary, Internal Audit Head, External Audit, Independent Directors and BTRC Chairman. Also, some secondary data were collected from company websites, annual reports, other related publicly available documents. The pragmatic evidence discovered area specific governance challenges such as lack of formal training for the board members, absence of cyber security introduction, no presence of institute directors of Bangladesh, lack of in-house program, absence of robust succession planning, lack of formal compliance and ethics programs in-house and industry level etc. Also, the various sub-committees (i.e. audit committee, nomination committee, remuneration committee etc.) were found ineffective to some extent. The study proposed some recommendations to overcome these lacking. The findings to the study are expected to have significant policy implication in reforming the corporate governance regulations in Bangladesh and Mobile Telecommunication industry in particular.
孟加拉国的移动通信行业被四家公司所征服:Grameenphone、Banglalink、Robi Axiata和最后一家国有公司Teletalk。孟加拉国这个行业的寡头垄断性质提供了一个令人着迷的研究前景。就独特的移动用户市场规模而言,孟加拉国在亚太地区排名第五,在全球排名第八。移动通信产业通过语音通话和互联网对国内生产总值(GDP)的贡献为1.8%。随着时间的推移,移动通信行业对智能手机的需求也在不断增加。该行业还为该国贡献了30%的就业机会。本文的目的是强调在该行业中运营的公司所面临的主要治理相关挑战。数据主要通过对公司首席执行官、公司秘书、内部审计主管、外部审计、独立董事和BTRC董事长的迷人访谈收集。此外,还从公司网站、年度报告和其他相关的公开文件中收集了一些二手数据。务实的证据发现了特定领域的治理挑战,如董事会成员缺乏正式培训、缺乏网络安全介绍、孟加拉国研究所主任缺席、缺乏内部计划、缺乏强有力的继任计划、缺乏内部和行业层面的正式合规和道德计划等。此外,各小组委员会(即审计委员会、提名委员会、薪酬委员会等)在某种程度上被认为是无效的。本研究提出了一些克服这些不足的建议。研究结果预计将对改革孟加拉国公司治理法规,特别是移动电信行业具有重要的政策意义。
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引用次数: 0
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International Journal of Management Science and Engineering Management
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