任务教学法在机械设计课程双语教学中的建构与实践

论述了对机械设计课程实施双语教学的重要性以及当前机械设计课程双语教学中存在的问题,并结合教学实践就任务教学法在机械设计课程双语教学中的建构及实践进行了详细的分析及说明,最后,从激发学生学习的热情,培养学生的学习能力,培养学生的跨文化交流能力,提高学生的英语应用能力等方面总结了任务教学法在机械设计课程双语教学中的实施效果,证明任务教学法在机械设计课程的双语教学中是有效的。     

Soil seismic analysis for 2D oblique incident waves using exact free-field responses by frequency-based finite/infinite element method

The seismic analysis of a viscoelastic half-space under two-dimensional (2D) oblique incident waves is carried out by the finite/infinite element method (FIEM). First, the frequency-domain exact solutions for the displacements and stresses of the free field are derived in general form for arbitrary incident P and SV waves. With the present formulation, no distinction needs to be made for SV waves with over-critical incident angles that make the reflected P waves disappear, while no critical angle exists for P waves. Next, the equivalent seismic forces of the earthquake (Taft Earthquake 1952) imposed on the near-field boundary are generated by combining the solutions for unit ground accelerations with the earthquake spectrum. Based on the asymmetric finite/infinite element model, the frequency-domain motion equations for seismic analysis are presented with the key parameters selected. The results obtained in frequency and time domain are verified against those of Wolf’s, Luco and de Barros’ and for inversely computed ground motions. The parametric study indicated that distinct phase difference exists between the horizontal and vertical responses for SV waves with over-critical incident angles, but not for under-critical incident angles. Other observations were also made for the numerical results inside the text.     

Excel规划求解在地下水资源管理中应用

由一个简单例子介绍了Excel规划求解步骤。通过两个示例介绍了Excel在应用嵌入法和响应矩阵法建立地下水资源管理模型求解中的应用。示例计算表明,Excel作为普及、简易的工具,应用于地下水资源管理线性规划模型求解具有简明、方便实用的特点。     

中国建筑业产品价格问题的解决途径和方法

通过分析工程建设运营过程中建筑业企业的价值增值活动,构建其价值增值空间分布,提出三条有效途径解决建筑业产品价格问题,即:提高建筑业企业价值增值活动的效率;扩大建筑业企业价值增值活动的空间;EPC模式是最适合大型企业成长发展战略的经营方式,并且也最有利于解决建筑业企业施工承包建造产品的价格问题。     

基于案例教学法的教师实践素养提升途径探讨

案例教学是基于实践问题导向的有效教学方法,工程项目管理课程实施完整案例轮环式教学改革是提高提高课程教学质量、培养学生实践创新能力的全程系统联动的有效途径。适应完整案例轮环式教学改革需要对教师提出了增强实践素养的必然要求,授课教师应具备课堂教学导演能力、精辟科学的总结能力、课堂组织协调能力和课外准备统筹能力。教师实践素养提升的主要途径包括工程项目管理实践体验、工程项目管理社会实践咨询服务、工程项目管理实践专家讲座交流、执业资格考试训练和传帮带互学提高等,并应遵循实践素养提升的内在规律实现实践素养持续提高的有效性。     

腹股沟疝前、后入路无张力修补术的前瞻性随机对照研究

目的对成年腹股沟疝患者应用平面补片进行前入路手术（Lichtenstein手术）和后入路手术（Kugel手术）,比较2种术式的临床应用效果。方法采用前瞻性随机对照方法,将126例腹股沟疝患者随机分为前入路组与后入路组2组,每组63例,分别进行Lichtensten术和Kugel术,比较2组平均手术时间、平均住院时间、术后并发症发生率、术后复发率及住院期间费用,评价2种手术方法的疗效。结果在平均手术时间、异物感、腹股沟疼痛感、平均住院时间、平均住院费用等方面,2组比较差异均有统计学意义（P〈0.05或P〈0.01）。在切口血清肿、术后尿潴留、复发率等方面,2组比较差异均无统计学意义（P〉0.05）。结论后入路手术治疗成年腹股沟疝具有一定优势,总体并发症发生率较前入路低。     

Agglomeration,Differentiation and Creative Milieux: A Socioeconomic Analysis of Location Behaviour of Creative Enterprises in Shanghai

This paper presents an empirical study on the location choice of creative enterprises in Shanghai. It is suggested that categorical differences between different subsectors of creative industries are significant, especially with regard to a division between technology-intensive sectors and culture-related agencies. Creative enterprises from technology-intensive sectors such as architecture design and IT enterprises appear to differ greatly from cultural and fashion related agencies in location choice due to the disaggregated knowledge inputs involved in the production processes, as well as the divergences in market operation. Meanwhile, this study suggests that some location variables for creative industries (e.g. human capital and face-to-face contact) highlighted by West-based studies on the “creative class” are relevant in the case of Shanghai while other factors like sexual tolerance bear minor importance.     

Systems,habitats or places: evaluating the potential role of landscape character assessment in operationalising the ecosystem approach

A key challenge for research and practice is to understand how the ecosystem approach can be rolled out in spatial planning, management and decision-making. Any framework used to apply the ecosystem approach needs to not only be environmentally coherent but also socially meaningful. Drawing on semi-structured interviews and case studies, this paper examines the potential role of one place-based approach, landscape character assessment, as a medium to ensure socio-ecological relevance in operationalising the ecosystem approach. Our findings show that although place-based approaches have value as frameworks for distilling the ecosystem approach into a manageable form, their ecological relevance is a subject of debate. However, the potential relationship between landscape character, function and ecosystem services presented a powerful pathway for operationalising the ecosystem approach. The ecosystem approach may, in turn, complement landscape character assessment by providing a framework for exploring the functional dimension of landscape condition.     

Evaluation of iron–epoxy metal nanocomposite in glass fibre and Kevlar

This paper deals with the enrichment of the both mechanical and electrical properties of Kevlar and glass fibres, not including mounting the weight of the structure by adding the iron (Fe) nanocomposites with the epoxy resin. The Fe is mixed well with the epoxy to increase the mechanical constancy and the electrical property of the fibre by a non-covalent approach. The synthesis of metal nanocomposite with epoxy is done by the direct mixing method. The Kevlar and the glass fibre were taken as the samples for this study. The zinc oxide and epoxy were mixed simultaneously using a mechanical stirrer to give appropriate dispersion and adhesion without disturbing the hydrophobic performance of the epoxy, and the Fe powder and epoxy are added with a hardener in the ratio of 1:1:0.1. The results show that the mechanical property of the fibre increased with the decrease in the weight of the laminate when they are treated with the metal nanocomposite.     

An energy‐dissipating approach for adjacent retrofitted structures

The approach of positioning energy dissipaters between adjacent structures can effectively prevent the collision of two adjacent buildings. For adjacent retrofitted structures, an effective strengthening approach that involves implementing energy‐dissipation measures both between and within buildings is proposed. This paper is based on the actual Shanghai ShiMao International Plaza. To avoid having to strengthen most of the structural members, the strengthening measure of energy dissipation is selected because of its construction cost and time constraints. This approach involves replacing several dampers between the adjacent structures and adding viscous damping walls in the retrofitted structure to reduce the seismic response of the retrofitted structure back to the original level. Additionally, a practical calculating method for the equivalent additional damping ratio for the adjacent structures connected by energy dissipaters is proposed. The results show that the effect of energy dissipation in the retrofitted structure is prominent and that the goal of indirect strengthening is achieved. The strengthening approach of energy dissipation and the calculating method of the equivalent additional damping ratio for adjacent structures provide a reference for similar engineering designs.