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Journal of Future Sustainability最新文献

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The role of wildfires in a sustainable future 野火在可持续未来中的作用
Pub Date : 1900-01-01 DOI: 10.5267/j.jfs.2022.8.003
E. Sharifi
Climate change and global warming have led to many risks and changes for the Earth, including the increase in natural fires, floods, air pollution, unusual seasons, etc. The increase in the trend of global warming may bring many countries underwater. For instance, the populous Asian nation of Bangladesh is most vulnerable to rising sea levels. It is estimated that a rise of just one meter in sea level is enough to submerge 30,000 square kilometres of the coastal areas of Bangladesh and displace 15 million people. Therefore, it is crucial to determine the effects of different factors on global warming and take possible actions to reduce the damage. Among various factors, natural fires are believed to be responsible for up to 20% of greenhouse gas production in the world. The source of 80% of fresh water in the United States is believed to be forest lands, which means the effect of natural fires can be disastrous not only for drinking water but also for aquatic habitats. In this paper, we present a survey on the impacts of forest fires on global warming.
气候变化和全球变暖给地球带来了许多风险和变化,包括自然火灾、洪水、空气污染、异常季节等的增加。全球变暖趋势的加剧可能会使许多国家被海水淹没。例如,人口众多的亚洲国家孟加拉国最容易受到海平面上升的影响。据估计,海平面仅上升1米就足以淹没孟加拉国3万平方公里的沿海地区,并使1500万人流离失所。因此,确定不同因素对全球变暖的影响,并采取可能的行动来减少损害是至关重要的。在各种因素中,自然火灾被认为对世界上高达20%的温室气体排放量负有责任。据信,美国80%的淡水来自林地,这意味着自然火灾的影响不仅会对饮用水造成灾难性影响,也会对水生生物栖息地造成灾难性影响。本文对森林火灾对全球变暖的影响进行了调查。
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引用次数: 1
Simulation and analyses of shea nuts (vitallaria paradoxa) processing plant using FlexSim© 使用FlexSim对乳木果(vitallaria paradoxa)加工厂进行仿真和分析©
Pub Date : 1900-01-01 DOI: 10.5267/j.jfs.2022.11.006
Nurudeen Abdulhakeem Hassan, A. Arogundade, U. Iyenagbe, Dagwa Ishaya Musa
Manufacturing facilities are systems that require adequate designing, maintenance and reservations for improvement in the future. Layouts need to be effectively designed to reduce operating to the minimum. Computer simulation is a process of investigating and analyzing the behavior of production processes for effective decision-making using computers to generate solutions that will positively impact short, and long-term planning of the Plants and save costs of real-life implementation. This study investigated a 500Kg capacity shea nut processing plant using FlexSim©. The findings from the initial model were not effective and experienced bottlenecks in workstations (Roaster and Milling) sections, poor cycle and lead times coupled with manual labor, Plant efficiency was 35.7%. However, the Improvement Layout Model was able to address these bottlenecks, the results showed the Plant efficiency increased to 83.3%, shorter lead and cycle times, improved machine utilization, and throughput capacity of the Plant. The results were an indication of conformance to the layout design developed to aid in enhancing the traditional shea nut processing that is largely dominated by traditional processing practices.
生产设施是需要充分设计、维护和保留以供将来改进的系统。布局需要有效地设计,以减少操作到最低限度。计算机模拟是一种调查和分析生产过程行为的过程,使用计算机生成解决方案,这些解决方案将对工厂的短期和长期规划产生积极影响,并节省实际实施的成本。本研究利用FlexSim©对一个500Kg容量的乳木果加工厂进行了调查。最初模型的结果并不有效,并且在工作站(烘焙机和铣床)部分遇到瓶颈,周期和交货时间较差,再加上体力劳动,工厂效率为35.7%。然而,改进布局模型能够解决这些瓶颈,结果表明工厂效率提高到83.3%,提前期和周期时间缩短,机器利用率提高,工厂的吞吐能力提高。结果表明,布局设计的一致性,以帮助加强传统的乳木果加工,这在很大程度上是由传统的加工实践占主导地位。
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引用次数: 0
The bullwhip effect in supply chains: Review of recent development 供应链中的牛鞭效应:近期发展回顾
Pub Date : 1900-01-01 DOI: 10.5267/j.jfs.2022.9.007
Elham Rafati
The bullwhip effect happens whenever the demand order fluctuations in the supply chain (SC) escalate as they are transferred up the SC. In fact, a small change in point-of-sale demand may be interpreted by SC participants as a much bigger variability in demand. This looks like a cracking a whip, where a small flick of the wrist may yield a large motion at the end of the whip. Misstate data from one side of a SC to the other part may yield substantial sloppiness. This includes increase in inventories, shortage of cash flow, weak customer satisfaction, etc. Enterprises may efficiently reduce the bullwhip effect by completely learning its root causes. This paper presents an overview on the concept and recent development of the bullwhip effect.
只要供应链(SC)中的需求订单波动随着供应链的转移而升级,牛鞭效应就会发生。事实上,销售点需求的微小变化可能会被SC参与者解释为需求的更大变化。这看起来就像一根折断的鞭子,在鞭子的末端,手腕的一个小轻弹可能会产生一个大的运动。从SC的一侧到另一侧的错误数据可能会产生严重的马虎性。这包括库存增加、现金流短缺、客户满意度不高等。企业只有彻底了解牛鞭效应的根源,才能有效地减少牛鞭效应。本文概述了牛鞭效应的概念及其最新发展。
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引用次数: 2
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Journal of Future Sustainability
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