数控机床功能的扩展

本文主要分析了HEIDENHAIN TNC 310数控铣床系统中圆弧铣削指令及螺纹铣削指令,对螺纹铣削功能进行延伸,扩展到圆弧三轴联动,并对螺纹铣削指令格式进行了修改,从而具有圆弧三轴联动铣削功能。     

美国与英国公益性科技管理体系研究

从国家科技管理机构、科研体系及公共科研成果转化三个方面分析美国和英国的公益性科技管理制度及其发展变化.随着经济全球化和知识自由流动的发展,科学技术在国家经济发展与社会进步方面的作用越来越大,政府在科技管理上的职能与地位也随之发生变化,总的来说是由原来的主要资助者和实施者转变为催化者和促进者.     

巧妙利用小组合作学习实现英语单元复习的高效性

比起形式丰富多彩的新授课,学生经常感到复习课枯燥乏味。为了激发学生的学习热情,在英语单元复习课上,采用小组合作学习的方式,引导学生开展各种各样的游戏和竞赛活动,使学生在宽松、愉悦的学习氛围中成功地将知识内化吸收,从而实现英语单元复习的高效性。     

达里厄垂直轴风力机叶片螺旋变异优化研究

针对传统达里厄( Darrieus)直叶片垂直轴风力机在运行过程中出现叶片动转矩周期波动性大,动转矩系数曲线 震荡剧烈,造成对风轮旋转主轴的强烈冲击及风力机功率输出不稳定等问题,文章提出对Darrieus垂直轴风力机传统直 叶片进行螺旋扭曲变异设计,以改善风力机叶片的动转矩输出性能。结合SolidWorks和MATLAB完成风力机模型的三 维参数化建模,在流体仿真软件FLUENT中完成模型的数值模拟仿真计算。通过螺旋扭曲角的单因素试验验证了变异 设计叶片输出的动转矩性能周期波动性降低,平均动转矩得到提高,并确定螺旋扭曲角的优化区间。文章构建了风力机 系统模型建立与仿真体系,采取螺旋扭曲变异设计,改善了风力机叶片输出的动转矩性能,初步确定合理的螺旋扭曲角 分布范围为：70°~ ll0°。     

工程重大安全事故罪的主体范围探析

针对《刑法》第137条关于工程重大安全事故罪主体的规定范围略显狭窄的缺陷，提出应当根据我国工程建设的实际情况增加下列主体：将工程建设的相关自然人及人合性组织列入本罪的调整范围；另外，还应当将“勘察单位”、“工程质量监督站”和“施工图审查单位”增列为本罪主体，以利于对本罪的制裁与预防。     

Implementing the ecological approach in tobacco control programs: results of a case study

The ‘new public health’ has stimulated calls to adopt an ecological approach for action aimed at improving population health. However, the implementation of ecological programs has often remained a challenge. The objective of this study was to identify factors facilitating the implementation of ecological tobacco control programming in two Public Health Departments in Québec (Canada) using Scheirer's model of program implementation as a conceptual framework and an exemplary case study design. Analysis revealed two distinct configurations of environmental, organizational and professional characteristics that were related to equally successful implementations of the framework. Key roles for factors such as provincial ministerial guidelines and financial resources, human resources, and relationships and alliances with other organizations, were highlighted. These results replicate findings from quantitative surveys and allow better understanding of the conditions required for planning ecological programming.     

论21世纪高校经常性思想政治工作的基本方法

21世纪,高校基层单位要增强经常性思想政治工作的实效性,可以分别运用"榜样式"、"贴近式"、"高频式"、"借花献佛式"、"混凝式"等基本方法来开展工作.     

西方人口流动模型及其对我国就业政策的启示

一个社会所能容纳的就业总量 ,除了受全社会的产出水平决定外 ,还受其它一些因素的影响。其中 ,人口的流动、特别是从农村向城市的人口流动会对一个国家的就业人数产生很大的影响。分析西方的人口流动模型 ,是为了探讨运用这些理论选择适合我国国情的就业政策。     

价值理性、工具理性与单位制基础的消解

随着改革开放的不断深入,中国进入复杂多变的社会转型时期,其中单位制的变化在整个转型中具有重要的意义。单位制原来得以形成的政治、经济、文化基础已经消失或正在消解,这种消解是中国的现代化建设由以价值理性为主导走向以工具理性为主导的过程,体现了当代中国社会运行和发展的逻辑。     

The Difficult History of Ancillary Units: The Obstacles and Potential Opportunities to Increase the Heterogeneity of Neighborhoods and the Flexibility of Households in the United States

ABSTRACT

Most aging Americans express the desire to stay in their current home for the rest of their lives. However, as literature and practice indicate, aging in place cannot be successfully achieved in all places, especially in those places where zoning regulations and building codes act as barriers to the flexible adaptation of environments. One possible solution could come from the legalization of what is commonly known as granny flats, or more technically as Ancillary Dwelling Units. This article is divided into three parts. The first part is a brief history of Ancillary Dwelling Units. The second part focuses on the critical role played by local and state urban planning policies in the future of Ancillary Dwelling Units. California is used as a noteworthy example. The third part discusses how positive outcomes for senior residents who have Ancillary Dwelling Units legally present in their neighborhoods are linked to the appropriateness of their design.