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41.
Joseph Hillier 《International journal of urban and regional research》2018,42(2):334-356
How engineering in the context of urban socio‐environmental challenges is practically and effectively mobilized has been the subject of some debate. Numerous professional bodies have encouraged engineers to approach socio‐environmental issues through increased engagement with, and accountability to, the public through effective participatory practices. This article presents a close empirical analysis of a major engineering project in London to argue that engineering has a more complex relationship with social, political and environmental conditions than the idealistic participatory conception supposes. In fact, the spatial, technical and economic arrangements of engineering practice may limit the potential for public participation. Through a detailed analysis of the example of the London Water Ring Main (from around 1988 to 1994), this article shows how myriad sometimes conflicting engineering issues and responsibilities interfered with key elements of effective participation. Therefore, although increased public engagement in engineering may be desirable in theory, substantial professional, institutional and political change may have to occur before this is possible in practice . 相似文献
42.
Michael S. Garver 《Journal of Business Logistics》2019,40(1):30-43
To increase the relevance of logistics and supply chain academic research, this paper recommends the development and testing of middle‐range theory and practice‐level theory. Yet, there are a number of research issues that arise when academic researchers test middle‐range and practice‐level theory, both in measuring constructs and in testing theoretical relationships between constructs. Concerning the measurement of constructs, this paper recommends that academic researchers pay more attention to content validity and undertake rigorous processes to ensure content validity. In addition, academic researchers need to more explicitly define constructs as either reflective or formative. If the construct is defined as formative, then the traditional statistical approaches to validate these measurement scales are not recommended. The appropriate use of employing single‐item measures for concrete constructs is discussed. In regard to conducting hypothesis tests, research issues associated with multicollinearity and omitted variable bias are discussed. Relative weight analysis is ideal for testing theoretical models and research hypotheses when survey data are obtained, multicollinearity is present, and there are a large number of independent variables predicting a dependent variable. Thus, relative weight analysis is ideal for testing research hypotheses in logistics and supply chain management. 相似文献
43.
本文结合昆明理工大学实际,探讨了在新的时代要求下为高校非数学专业学生开设数学拓展课程的必要性,并提出了相关的理论依据。同时,本文在已开设拓展课程的基础上总结了取得的成绩和存在的不足,为今后课程设置及教学的进一步完善提出了相关建议。 相似文献
44.
完善和创新信息化环境下物资需求计划管理内部控制体系已成为企业成功的重要关键,具有现实的经济意义。 相似文献
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本文分析了高职院校环境监测实践教学中存在的问题,从实践参与教学模式、实践教学方法及考核、评价方式等方面进行了一系列的探索和尝试。 相似文献
48.
Land greening in China is regarded as contributing a great deal to greening of the Earth. The phenomenon is mainly attributed to climate change, arising atmospheric CO2 and ‘Grain for Green’ (GFG) land management policies. However, limited knowledge is known how much land greening is from contributions of the GFG practice. Therefore, the study took the typical region of the GFG practice, the Loess Plateau, as the study area, and used 1982–2015 satellite-observed GIMMS3g normalized difference vegetation index (NDVI) data, ERA-Interim climatic variables (precipitation, temperature and solar radiation) and atmospheric CO2 concentration data with the help of a developed TPRC-based NDVI model to derive GFG-induced NDVI after 1999. Furthermore, this study tracked the spatial-temporal dynamics of GFG-induced NDVI and assessed contributions of the GFG practice to regional vegetation changes. Results showed that satellite-observed NDVI and TPRC-based NDVI both exhibited an increasing spatial pattern from the northwestern to southeastern Loess Plateau, but their greening trends were separately 0.0022 and 0.0009 per year in 1982–2015 (p < 0.05). Note that the satellite-observed greening trend was much steeper with a slope of 0.0056 per year after 2006 (p < 0.05). The subsequent analyses documented that GFG-induced land greening were largely responsible for the steep trend. In space, evident greening patterns began to be observed in the central Loess Plateau from 2006 to 2008, afterwards expanded towards eastern and southwestern Loess Plateau. In 2011–2015, the increase magnitude of GFG-induced land greening in the Loess Plateau averagely accounted for 8.5 % in comparison to estimated TPRC-based NDVI, but in six natural zones were various, ranging from 3.2%–15.7%. In some regions of central Loess Plateau, GFG-induced NDVI contributed even more than 20 % to vegetation increase. This study highlights that land use management contributes more to land greening dynamics over the Loess Plateau compared to climate change and arising atmospheric CO2 concentration. These findings likely provide some valuable information for curbing or enhancing specific-location vegetation changes in future regional land management and planning. 相似文献
49.
孙琳琳 《中小企业管理与科技》2021,(3)
随着信息时代的到来,互联网技术在各个行业的应用也越来越普遍,这也为我国经济的发展提供了非常有利的条件。工商管理模式的创新实践是现代企业经营管理中的核心内容,工商管理模式将直接影响企业在日常经营中解决各种管理问题的效率,是企业稳定持续发展的重要指标。因此,企业的管理者应该合理地运用现代化信息技术,提升企业工商管理的水平,实现企业的健康稳定发展。 相似文献
50.
当前,我国许多传统设计研究院正致力于向国际型工程公司的转型,这一转型过程中的一项重大挑战就是对分包商的管理,本文通过中铝国际"区域分包模式"的管理实践以及效果的分析,对EPC模式下的分包管理模式进行了探讨。 相似文献