ERP系统在物资管理中的应用

随着现代社会经济水平的不断提升,各企业的物资管理任务不断增加,物资数量与种类日益丰富,传统的物资管理手段已经无法满足当下需求。此时,工作人员引进ERP系统,以先进技术优化物资管理,灵活利用系统功能,从而进一步提升物资管理效率,解决物资管理问题。论文简要分析了企业物资管理中存在的问题,对物资管理中ERP系统的建设进行深入探究。     

The electric vehicle revolution: Critical material supply chains,trade and development

The emergence of a mass market for electric vehicles (EVs) offers development opportunities for countries that have abundant resources of cobalt, nickel, lithium, copper, aluminium and manganese. Not surprisingly, developing countries have proposed ambitious plans to expand production of these raw materials. However, an observation from the resource curse literature is that strong institutions are required if they are to mitigate the risk of poorly directed, often excessively procyclical, investment, not least because of the complexity, opacity and price volatility of many raw materials utilised by global EV value chains. This paper examines the outlook for EV demand and associated raw material usage paying attention to the drivers and sensitivities required to assess and track future market transformations. These end use shifts are then placed in the context of the broader supply chain adjustments and trends shaping the demand. For resource exporters, adapting to structural change will require fiscal, regulatory, environmental and institution reforms designed to capture shifting patterns of resource wealth in a way which takes appropriate account of comparative advantages in specific value chains and mitigates adverse environmental and social consequences from their extraction and processing.     

甘肃省发展非粮原料产燃料乙醇初探

以甘肃省燃料乙醇非粮原料丰富的资源优势为依托,从乙醇得率、原料产量、地理环境、政策优势等因素考虑,通过实验、调研和统计等方法,对甘肃发展燃料乙醇的非粮原料资源情况进行了探索分析,证明了甘肃具有自然环境适宜、非粮资源丰富、政策制度优先、企业单位重视、基础产业发展较早等特点,为甘肃省今后在非粮原料燃料乙醇的资源开发利用方面提供了参考依据。     

From our perspective: developing printed extension materials with cocoa farmers in Ghana

Farmers' lack of access to technical information constitutes a major obstacle to improving cocoa productivity in West and Central Africa. Recent debates on cocoa extension pay little attention to the potentially important role of printed extension materials for promoting cocoa integrated crop and pest management (ICPM) and encouraging farmer experimentation. A key issue concerns how to design such materials to meet farmers' needs. Typically, printed agricultural extension materials are developed by technical experts with little input from farmers, the end users. Materials developed in this way are often incomprehensible or confusing to farmers as they tend to contain too much information and use culturally inappropriate symbols and complex language. This paper describes a process involving Ghanaian cocoa farmers, communications and extension specialists to develop an illustrated booklet on cocoa integrated crop and pest management. The case study shows that farmers can make significant contributions to designing printed extension materials by bringing their own perspectives to the sequencing and design of the materials, highlighting details and showing illustrators the most effective ways to convey messages in a non-written way (using body language, colour etc.). As a result of farmers' involvement, the illustrations in the booklet are presented in a story context and sequence, and use a cause and effect approach to communicating ideas. Farmers' input also ensured that the illustrations provide a holistic presentation of cocoa farming by highlighting the linkage between application of technologies and improved household welfare. The paper concludes by offering guidelines on best practices for involving farmers in extension material development.     

纳米技术在渔业上的应用前景

本文结合渔业科技发展的实际对纳米、纳米技术和纳米材料进行扼要介绍,在此基础上对我国研发纳米技术促进渔业技术创新提出了三点政策建议。     

福建省大樟溪引水工程原水成本核算

结合福建大樟溪引水工程的实际情况,从水资源成本、环境工程成本和机会成本三层面综合测算大樟溪引水工程的原水成本,一方面能真实反映原水成本,另一方面考虑了对水源区的生态补偿,有利于促进水资源环境的生态保护建设,充分调动水源区保护者参与环境保护的积极性,有利于保障引水工程的良性运营,同时也为其他引水工程的原水成本测算提供参考。     

Inventory Types and Firm Performance: Vector Autoregressive and Vector Error Correction Models

The effects of inventory management on firm performance have been well documented. Most previous research, however, has focused on the performance effects of total inventories and has ignored the potentially differential performance effects of raw materials, work‐in‐process, and finished goods inventories. This research investigates the effects of various inventory types on firm performance. The empirical analyses of data from U.S. manufacturing industries reveal that the magnitude of the inventory–performance relationship varies by type of inventory and across industries. Specifically, raw materials inventories have a greater impact on firm performance than work‐in‐process and finished goods inventories. As a possible explanation, intertemporal interactions among these inventory types are explored using vector autoregressive and vector error correction models. The results suggest that raw materials and finished goods inventories asymmetrically affect each other over time. Implications for research and practice as well as future research opportunities are discussed.     

归纳性教学模式在＂包装材料学＂教学实践中的应用

归纳性教学模式是一种典型的信息加工型教学模式,通过在教学中引导学生对资料信息进行组织、加工和归类处理,辨析各类型信息之间的相似性和差异性,产生并验证假设,帮助学生通过探究过程建构知识和技能.本文详细总结了归纳性教学模式的理论和方法在＂包装材料学＂教学实践中的运用.通过界定课程研究内容的深度和广度,恰当采用多种媒介旱现教学内容信息,组织归纳课程的目标内容,有效地加强学生对课程基础知识的深入理解和长期记忆,提高学生运用所学知识和技能解决包装工程实际问题的能力.     

英语教材中功能词与阅读难易度相关性研究

在国内外已有的影响英语阅读材料难易度的研究的基础上,选择功能词,并运用自编的功能词检测软件对其进行研究,发现功能词与阅读难易度存在一定的相关性。     

铝硅镀层22 MnB5高强钢高温拉伸性能及本构模型

为了分析和表征热成形用的铝硅镀层22MnB5高强钢的热变形行为,采用Gleeble-3800热模拟试验机,在成形温度750～900℃、应变速率0.1～10 s-1试验条件下实施了铝硅镀层22MnB5高强钢的板材等温拉伸试验,采用双曲正弦型Arrhenius本构模型描述铝硅镀层22MnB5高强钢的高温流变行为,并考虑应变...