Supply chain management

供应链管理
  • 文章类型: Journal Article
    机器人移动履行系统(RMFS)在处理大规模订单和导航复杂环境方面面临挑战,经常遇到一系列复杂的决策问题,例如订单分配,货架选择,机器人调度为了应对这些挑战,本文将深度强化学习(DRL)技术集成到RMFS中,满足高效订单处理和系统稳定性的需要。本研究集中在RMFS的三个关键阶段:订单分配和排序,货架选择,和协调的机器人调度。对于每个阶段,建立了数学模型,并提出了相应的解决方案。与传统方法不同,DRL技术的引入解决了这些问题,利用遗传算法和蚁群优化来处理与大规模订单相关的决策。通过仿真实验,评估性能指标,例如货架访问频率和RMFS的总处理时间。实验结果表明,与传统方法相比,我们的算法擅长处理大规模订单,展示非凡的优越性,能够在一小时内完成大约110个任务。未来的研究应该集中在对RMFSs的每个阶段进行综合决策建模,并为大规模问题设计有效的启发式算法,进一步提高系统性能和效率。
    Robotic Mobile Fulfillment Systems (RMFSs) face challenges in handling large-scale orders and navigating complex environments, frequently encountering a series of intricate decision-making problems, such as order allocation, shelf selection, and robot scheduling. To address these challenges, this paper integrates Deep Reinforcement Learning (DRL) technology into an RMFS, to meet the needs of efficient order processing and system stability. This study focuses on three key stages of RMFSs: order allocation and sorting, shelf selection, and coordinated robot scheduling. For each stage, mathematical models are established and the corresponding solutions are proposed. Unlike traditional methods, DRL technology is introduced to solve these problems, utilizing a Genetic Algorithm and Ant Colony Optimization to handle decision making related to large-scale orders. Through simulation experiments, performance indicators-such as shelf access frequency and the total processing time of the RMFS-are evaluated. The experimental results demonstrate that, compared to traditional methods, our algorithms excel in handling large-scale orders, showcasing exceptional superiority, capable of completing approximately 110 tasks within an hour. Future research should focus on integrated decision-making modeling for each stage of RMFSs and designing efficient heuristic algorithms for large-scale problems, to further enhance system performance and efficiency.
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  • 文章类型: Journal Article
    针对严重急性呼吸道综合症冠状病毒2型(SARS-CoV-2)等疾病的即时(POC)测试的有效供应链管理(SCM)需要不同利益相关者的积极参与,政府实体,和监管机构。负责监督POC测试的各个方面,包括采购,质量保证,storage,库存管理,分布,和人力资源能力,在于国家,省,和地方各级政府。这项研究旨在合作开发一种创新方法,以在资源有限的环境中增强SARS-CoV-2POC诊断服务的SCM,使用林波波省的莫帕尼区,南非,作为一个案例研究。
    主要利益相关者被邀请参加使用目的抽样的在线研讨会。研究采用名义分组技术(NGT)进行数据收集,由两个阶段组成。第一阶段侧重于识别COVID-19快速测试供应链中的障碍,而第二阶段旨在制定战略,克服第一阶段确定的优先障碍。参与者使用1-5的李克特量表对障碍和策略进行排名,并计算每个人的总体排名得分。向参与者提供了排名练习的结果,以获得反馈。
    来自国家(n=1)的11个主要利益相关者,省(n=4),和地方政府(n=2)级,研究实体(n=3),和非政府组织(n=1)参加了这项研究。参与者确定了供应链中的重大障碍,例如检测试剂盒的可用性,未知的需求,大流行期间关于SCM的信息,控制库存的方法,和采购流程。关键利益相关者建议的策略包括监控库存水平和优化库存可见性系统以提高测试可用性,增强信息可见性和一致的数据更新,以解决大流行期间的未知需求并改善SCM,采用数据捕获和数字化来进行有效的库存控制,并在国家一级实施需求规划和标准化采购流程,以加强库存采购。
    与关键利益相关者的成功合作,由NGT推动,共同创造了一种新的方法,在资源有限的环境中加强COVID-19诊断服务的SCM。这项研究有可能支持在这种情况下提供COVID-19诊断服务。建议进行的后续研究将评估实施这种方法的可行性。
    UNASSIGNED: Effective supply chain management (SCM) of point-of-care (POC) tests for diseases like severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) requires active participation from diverse stakeholders, government entities, and regulatory bodies. The responsibility for overseeing various aspects of POC tests, including procurement, quality assurance, storage, inventory management, distribution, and human resource capacity, lies with national, provincial, and local levels of government. This study aimed to collaboratively develop an innovative approach to enhance SCM for SARS-CoV-2 POC diagnostic services in resource-limited settings, using the Mopani District in Limpopo province, South Africa, as a case study.
    UNASSIGNED: Key stakeholders were invited to participate in an online workshop using purposive sampling. The study employed the nominal group technique (NGT) for data collection, which consisted of two phases. Phase 1 focused on identifying barriers in the supply chain of COVID-19 rapid tests, while phase 2 aimed to devise strategies to overcome the priority barriers identified in phase 1. Participants used a Likert scale of 1-5 to rank barriers and strategies, and an overall ranking score was calculated for each. The participants were provided with the results of the ranking exercise for their feedback.
    UNASSIGNED: Eleven key stakeholders from national (n = 1), provincial (n = 4), and local government (n = 2) levels, research entities (n = 3), and non-governmental organizations (n = 1) took part in the study. Participants identified significant barriers in the supply chain, such as the availability of testing kits, unknown demand, information on SCM during a pandemic, methods of controlling stock, and procurement processes. Strategies suggested by key stakeholders included monitoring stock levels and optimizing stock visibility systems to improve test availability, enhancing information visibility and consistent data updates to address unknown demand and improve SCM during a pandemic, employing data capturing and digitization for effective stock control, and implementing demand planning and standardized procurement processes at the national level to enhance stock procurement.
    UNASSIGNED: The successful collaboration with key stakeholders, facilitated by the NGT, resulted in the co-creation of a novel approach to enhance SCM for COVID-19 diagnostic services in resource-limited settings. This study holds the potential to support the provision of COVID-19 diagnostic services in such settings. A recommended follow-up study would assess the feasibility of implementing this approach.
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  • 文章类型: Journal Article
    在可持续发展的背景下,市场竞争加剧,和财政限制已成为绿色项目投资的重大障碍。绿色供应链金融(GSCF)以长期合作为特征,已成为缓解公司财务限制并将资本流入环境友好型行业的关键财务方法。我们提出了一个两级供应链,一个供应商和两个竞争的零售商在一个时期,并调查订购,销售,在竞争下同时进行融资决策。受财务考虑约束的零售商可能会获得GSCF或传统银行融资(BF)贷款。本研究调查了销售季节竞争对定价和销售策略的影响。结果表明,零售商根据市场竞争水平在清除和响应销售策略之间进行选择。在订购季节,当利率统一时,零售商平等地分享产品市场,供应商在考虑融资利率的同时制定供应链契约。在存在差别利率的情况下,零售商可能并不总是选择GSCF,即使他们提供了利率优势,由于运营和财务战略的综合影响。值得注意的是,竞争性零售商在初始绿色投资资本超过一定阈值时不会选择GSCF。
    In the context of sustainable development, market competition is intensifying, and financial constraints have emerged as a significant hindrance to green project investment. Green Supply Chain Finance (GSCF), characterized by long-term collaboration, has emerged as a crucial financial approach to mitigate corporate financial limitations and channel capital flows into environmentally friendly industries. We propose a two-echelon supply chain with one supplier and two competing retailers over a single period and investigate ordering, sales, and financing decisions simultaneously under competition. Retailers constrained by financial considerations may secure GSCF or traditional bank financing (BF) loans. This study investigates the influence of competition on pricing and sales strategies during the selling season. The results demonstrate that retailers select between clearance and responsive selling strategies based on the level of market competition. During the ordering season, retailers share the product market equally when interest rates are uniform, and the supplier formulates a supply chain contract while considering the financing interest rate. In the presence of differential interest rates, retailers may not always opt for the GSCF, even when they offer an interest rate advantage, due to the comprehensive impacts of operational and financial strategies. Remarkably, competitive retailers do not choose the GSCF when their initial green investment capital surpasses a certain threshold.
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  • 文章类型: Journal Article
    鳄梨生产主要局限于热带和亚热带地区,导致冗长的分销渠道,再加上他们不可预测的收获后行为,使鳄梨容易遭受重大损失和浪费。为了加强对\'Hass\'鳄梨成熟的监测,使用深度学习方法开发了一种数据驱动工具。这项研究涉及监测储存在三个不同储存环境中的478个鳄梨,使用5阶段成熟指数根据每个水果的共同特征对它们的成熟期进行分类。这些类别与鳄梨的每日摄影记录配对,导致标记图像的数据库。两种卷积神经网络模型,AlexNet和ResNet-18使用迁移学习技术进行了训练,以识别不同的成熟指标,能够预测成熟阶段和新的未知数据的保质期估计。该方法对成熟评估的最终预测精度为88.8%,当考虑样本的最佳方面时,96.7%的预测偏离其实际分类不超过半个阶段。根据归属分类的平均保质期估计在实际保质期的0.92天内,而模型的预测与实际保质期的平均偏差为0.96天。
    Avocado production is mostly confined to tropical and subtropical regions, leading to lengthy distribution channels that, coupled with their unpredictable post-harvest behavior, render avocados susceptible to significant loss and waste. To enhance the monitoring of \'Hass\' avocado ripening, a data-driven tool was developed using a deep learning approach. This study involved monitoring 478 avocados stored in three distinct storage environments, using a 5-stage Ripening Index to classify each fruit\'s ripening phase based on their shared characteristics. These categories were paired with daily photographic records of the avocados, resulting in a database of labeled images. Two convolutional neural network models, AlexNet and ResNet-18, were trained using transfer learning techniques to identify distinct ripening indicators, enabling the prediction of ripening stages and shelf-life estimations for new unseen data. The approach achieved a final prediction accuracy of 88.8% for the ripening assessment, with 96.7% of predictions deviating by no more than half a stage from their actual classifications when considering the best side of the samples. The average shelf-life estimates based on the attributed classifications were within 0.92 days of the actual shelf-life, whereas the predictions made by the models had an average deviation of 0.96 days from the actual shelf-life.
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  • 文章类型: Journal Article
    在常规疫情防控的背景下,本文考虑了一个两阶段的旅游供应链,包括一个通过广告吸引游客的景点和一个投资于服务改善和防疫的旅行社。通过建立旅游供应链的理论博弈模型,我们调查服务水平和广告水平如何影响零售价格,产品服务水平,和供应链的利润。结果表明,旅行社的服务水平可以提高消费者的偏好,扩大旅游产品的市场需求,和提高供应链效率,实现双赢,增加景区和旅行社的利润。零售商的价格,服务水平,晋升级别,和供应链利润都随着服务系数和广告系数的增加而增加,集中式模型的增加速度高于其他模型。可以为供应链企业制定协作战略和促进旅游供应链管理实践提供一些有价值的信息。
    In the context of regular epidemic prevention and control, this paper considers a two-stage tourism supply chain consisting of a scenic spot that attracts tourists through advertising and a travel agency that invests in service improvement and epidemic prevention. By establishing theoretical game models of a tourism supply chain, we investigate how the service level and advertising level can affect the retail price, product service level, and profits of the supply chain. The results show that the service level of travel agencies could improve consumers\' preferences, expand the market demand for tourism products, and improve the efficiency of the supply chain to achieve a win-win situation and increase the profits of the scenic spot and the travel agency. The retailer price, service level, promotion level, and supply chain profit all increase as the service coefficient and advertising coefficient increase, and the speed of the increase is higher for the centralized model than for other models. Some valuable information could be provided for supply chain enterprises to develop collaborative strategies and promote tourism supply chain management practices.
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  • 文章类型: Journal Article
    这项全面的文献计量研究调查了可持续供应链创新(SSCI)研究,检查它的演变,确定关键贡献者,揭示新兴趋势。使用健壮的Scopus数据集分析1158篇英语SSCI文章,揭示了值得注意的期刊,作者,机构,全球贡献。研究结果表明,自1999年以来,研究产出持续增加,过去十年中出现了显着增长。网络分析和基于密度的空间聚类确定了六个SSCI研究集群:商业中的可持续性和责任,导航创新和中断,可持续商业战略,环境可持续性和创新,可持续粮食系统和环境影响,和可持续的商业动态。这些集群突出了不断发展的可持续性和供应链管理(SCM)领域的多样性,有助于深入了解SSCI研究格局,并强调可持续性和SCM主题之间的相互联系,可能导致更全面的理论模型。此外,这种理解有助于企业预测新兴趋势并在SSCI中实施最佳实践。此外,认可活跃的机构和全球贡献者,为促进战略合作提供了实用的见解。
    This comprehensive bibliometric study investigates Sustainable Supply Chain Innovation (SSCI) research, examining its evolution, identifying key contributors, and unveiling emerging trends. Analyzing 1158 English-language SSCI articles using the robust Scopus dataset exposes noteworthy journals, authors, institutions, and global contributions. The findings suggest a consistent increase in research output since 1999, with a notable surge in the past decade. Network analysis and density-based spatial clustering identified six SSCI research clusters: Sustainability and Responsibility in Business, Navigating Innovation and Disruption, Sustainable Business Strategies, Environmental Sustainability and Innovation, Sustainable Food Systems and Environmental Impact, and Sustainable Business Dynamics. These clusters highlight the diverse nature of the evolving Sustainability and Supply Chain Management (SCM) field, contributing to a thorough understanding of the SSCI research landscape and emphasizing interconnections between sustainability and SCM themes, potentially leading to more comprehensive theoretical models. Furthermore, this understanding aids businesses in anticipating emerging trends and implementing optimal practices in SSCI. Moreover, recognizing active institutions and global contributors provides practical insights for fostering strategic collaborations.
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  • 文章类型: Journal Article
    外包是供应管理的重要工具。本研究考察了蒂尔基耶公共卫生部门当前的外包应用领域。给出了应用实例,连同外包领域的重要理论(交易成本经济学理论(TCE),核心能力理论(CCT),代理理论(AT),基于资源的观点理论(RBVT),关系理论(RT),和社会变革理论(SCT),土耳其公共采购立法,卫生部外包实践,和公立医院进行了讨论,以供回顾和举例说明。检查显示,外国对公共卫生部门的依赖正在增加,在一些采购过程中应用了不止一种理论。作为这项研究的结果,建议研究和比较哪些理论在其他国家的外包中脱颖而出。
    Outsourcing is an essential tool in supply management. This study examines the current outsourcing application areas of the public health sector in Türkiye. Application examples are presented, together with the prominent theories in outsourcing (Transaction Cost Economics Theory (TCE), Core Competencies Theory (CCT), Agency Theory (AT), Resource-Based View Theory (RBVT), Relational Theory (RT), and Social Change Theory (SCT), Turkish public procurement legislation, Ministry of Health outsourcing practices, and public hospitals are discussed for review and example. The examination shows that foreign dependency on the public health sector is increasing, and more than one theory is applied in some procurement processes. As a result of this study, examining and comparing which theories come to the fore in outsourcing in other countries is recommended.
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  • 文章类型: Journal Article
    背景案例研究强调了几种医疗保健产品制造中的劳工权利滥用,但是对问题的规模或涉及的特定产品知之甚少。我们旨在使用产品原产国(COO)的多个数据集,量化和比较向高收入环境提供的医疗保健产品制造中的劳工权利滥用的总体风险和特定产品风险。方法将来自挪威东南部的公共采购数据(n=23,972种产品)与来自其他三个高收入环境的数据集进行比较:剑桥大学医院的采购数据,来自UNComtrade的贸易数据,和来自美国食品和药物管理局(FDA)的注册数据。在每个数据集中,产品首席运营官与国际工会联合会对劳工滥用的风险评级相匹配,并在评级为4、5或5+时被视为高风险。结果在挪威的数据中,按价值计算,55.4%的产品有首席运营官申报,其中49.1%被认为是侵犯劳工权利的高风险。在剑桥数据中确定了70/100产品的首席运营官,COO符合高风险,按价值计算为59.9%。挪威特定医疗产品类别的风险水平各不相同,美国FDA,和UNComtrade数据集,但比例风险较高的包括医疗/手术手套和电外科产品。结论这些数据中存在的医疗保健产品制造中劳动权利滥用的高风险证据表明,整个行业的风险可能很高。迫切需要进行全球立法和政治改革,特别关注供应链透明度作为解决这一问题的关键机制。
    Background Case studies have highlighted labour rights abuse in the manufacture of several healthcare products, but little is known about the scale of the problem or the specific products involved. We aimed to quantify and compare the overall and product-specific risks of labour rights abuse in the manufacture of healthcare products supplied to high-income settings using multiple datasets on the product country of origin (COO). Methods Public procurement data from South-Eastern Norway (n=23,972 products) were compared to datasets from three other high-income settings: procurement data from Cambridge University Hospitals, trade data from UN Comtrade, and registry data from the US Food and Drug Administration (FDA). In each dataset, the product COO was matched to the International Trade Union Confederation risk rating for labour abuse and deemed high-risk when rated 4, 5, or 5+. Results In the Norway data, 55.4% of products by value had a COO declared, 49.1% of which mapped as high-risk of labour rights abuses. COO was identified for 70/100 products in the Cambridge data, with COO matching high-risk at 59.9% by value. The level of risk for specific medical product categories varied between the Norway, US FDA, and UN Comtrade datasets, but those with higher proportional risk included medical/surgical gloves and electrosurgical products. Conclusion Evidence of high-risk of labour rights abuse in the manufacture of healthcare products present in these data indicates a likely high level of risk across the sector. There is an urgent need for global legislative and political reform, with a particular focus on supply chain transparency as a key mechanism for tackling this issue.
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  • 文章类型: Journal Article
    在当前环境退化和资源紧张的全球背景下,追求可持续发展已成为当务之急。有希望实现这一目标的一个途径是数字技术的应用,这有可能使经济增长与碳足迹脱钩。然而,确保以审慎的方式设计和管理这些技术至关重要,与环境优先事项保持一致。这项研究的重点是探索区块链和人工智能(AI)在供应链协调和影响缓解中的潜在作用。此外,他们有能力激励回收和循环商业模式,以及促进碳核算和抵消。为了充分发挥这些优势,在考虑社会和生态因素的包容性协作框架内部署这些技术至关重要。该研究还提供了政策建议,突出了数字创新的关键杠杆点。使各国能够走上智能和绿色的工业转型道路。通过利用区块链和人工智能在供应链中的潜力,政府可以促进透明度,可追溯性,和问责制,从而促进可持续做法和减少环境影响。将区块链和人工智能技术纳入供应链方法可以大大提高效率。正如数值分析所证明的那样。总之,创新数字技术的整合为优化生产系统和经济活动提供了重要机会,同时优先考虑可持续发展目标,以改善社会和环境。这些技术有可能通过解决全球供应链中的信息失衡来减轻环境外部性。然而,必须优先考虑包容性治理,强调民主参与,以减轻任何意外的负面后果,特别是对于脆弱的社区。通过确保包容性决策过程,我们可以最大限度地发挥这些技术的积极影响,同时最大限度地减少潜在的危害。
    In the current global context of environmental degradation and resource constraints, the pursuit of sustainable development has become an imperative. One avenue that holds promise for achieving this objective is the application of digital technologies, which have the potential to decouple economic growth from its carbon footprint. However, it is crucial to ensure that these technologies are designed and governed in a prudent manner, with a strong alignment to environmental priorities. This study focuses on exploring the potential roles of blockchain and artificial intelligence (AI) in supply chain coordination and impact mitigation. Furthermore, they have the capacity to incentivize recycling and circular business models, as well as facilitate carbon accounting and offsetting. To fully realize these benefits, it is essential to deploy these technologies within inclusive collaborative frameworks that take into consideration social and ecological considerations. The study also offers policy recommendations that highlight key leverage points for digital innovation, enabling countries to embark on smart and green industrial transformation pathways. By harnessing the potential of blockchain and AI in supply chains, governments can promote transparency, traceability, and accountability, thereby fostering sustainable practices and reducing environmental impacts. Incorporating blockchain and AI technologies into supply chain approaches leads to a substantial improvement in efficiency, as demonstrated by a numerical analysis. In conclusion, the integration of innovative digital technologies offers significant opportunities to optimize production systems and economic activity while prioritizing sustainability objectives for the betterment of society and the environment. These technologies have the potential to mitigate environmental externalities by addressing information imbalances within global supply chains. However, it is essential to prioritize inclusive governance that emphasizes democratic participation to mitigate any unintended negative consequences, especially for vulnerable communities. By ensuring inclusive decision-making processes, we can maximize the positive impact of these technologies while minimizing potential harm.
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  • 文章类型: Journal Article
    这项研究是针对印度尼西亚的工业农业进行的。在前人研究的基础上进行了风险分析。获得了一个风险来源,即不符合规格的原材料,然后建议通过评估供应商绩效来缓解。这个活动涉及大量的数据,需要高效和有效的数据存储和访问。仿真布局中的级别包括分析系统需求,使用问题图,编译活动图,决定子进程,过滤信息。该分析是通过比较供应链与区块链和没有区块链的使用来进行的,然后获得,以确定是否有增加。顺序存储的数据场景描述了当事务处理正在进行并且根据发生的过程顺序存储时的情况。将数据存储在组中解释了当事务已完成并存储在具有相似数据的组中时的问题。更容易跟踪特定数据。在这方面,将使用网站进行模拟,即区块链演示。设计阶段从确定系统需求开始,创建用例图,编译活动图,确定子过程,选择信息。将对获得的模拟结果进行分析,以确定区块链作为支持与使用方面的数据相关的风险缓解的手段的可行性,包括安全,信任,可追溯性,可持续性和成本。
    This research was conducted on industrial agriculture in Indonesia. Risk analysis was carried out based on previous research. One source of risk was obtained, namely raw materials that did not meet specifications, which was then proposed to be mitigated by evaluating supplier performance. This activity involves a lot of data, requiring efficient and effective data storage and access. The level in the simulation layout includes analysing system needs, using problem diagrams, compiling activity diagrams, deciding subprocesses, and filtering information. The analysis is carried out by comparing the use of supply chains with Blockchain and without Blockchain, which is then obtained to determine whether there is an increase. A sequentially stored data scenario describes a situation when the transaction process is in progress and is stored sequentially according to the process that occurs. Storing data in groups explains a problem when a transaction has been completed and stored in groups with similar data, making it easier to track specific data. In this regard, a simulation will be carried out using a website, namely a blockchain demo. The design stage starts with identifying system requirements, creating use case diagrams, compiling activity diagrams, determining subprocesses, and selecting information. The simulation results obtained will be analysed to determine the feasibility of Blockchain as a means of supporting risk mitigation related to data using aspects, including security, trust, traceability, sustainability, and costs.
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