单片机在电子车窗控制器中的应用设计

阐述电子车窗控制器的组成、功能、原理,介绍其研制过程、编程思想,并对软件、硬件可靠性作了分析。     

营业线施工应增加有关概算费用的探讨

针对目前铁道部有关加强行车安全的文件与设计概算编制规定不协调的问题,笔者提出了自己的看法.     

Non-commuters: the people who walk to work or work at home

The paper focuses on the socioeconomic characteristics of workers at home and those who walk to work and these are compared with commuters (those who travel to work by motorized transportation). Understanding of such characteristics of these people is useful for purposes of designing policies that encourage these forms of "travel" to work, if it is believed desirable for planning or environmental purposes. For example, subsidizing public transportation may also have an impact on the proclivity to work at home or walk to work. Using a large census data set for Israel, separate subsamples are analyzed for heads of household and for their spouses. Metropolitan areas as well as peripheral urbanized areas are analyzed separately. Logit analysis is used to identify those variables that affect the likelihood of different groups of people to walk to work or to work at home.It is shown that walkers to work tend to be lower-income, less-educated people with lower asset ownership rates. Females are overrepresented amongst them, while "high-status" professionals are underrepresented. Workers at home appear to be a more complex group. They tend to have higher levels of education and wealth than commuters, but earn less on average. They include proportionately more females. The likelihood of working at home increases with home size and with ownership of some durable goods. The workers at home may in fact be comprised of two or more differing groups with contrasting characteristics, one higher-income and higher-educated, the other with lower socio-economic indicators. Because they may be a heterogeneous group, development of planning policies to encourage non-vehicle commuting may require different policy tools for the different subgroups.     

墩台施工监理中的若干问题

针对工程的特殊性 ,管理人员在质量控制方面及相关协调工作方面进行了必要的调整和大胆尝试 ,最终促成该项目的圆满完成。     

高速铁路开行160km/h普速列车信号系统适应性研究与应用

针对目前160 km/h普速列车上线高速铁路运行的需求,进行技术方案可行性分析,从普速列车运行到动车组安全防护、过走防护进行研究。最后以兰新第二双线为例,提出适应实际工程的普速列车上线运行的技术方案。     

有移动热源的海上大空间通风技术研究

由于有某种热源在海上大空间内移动,使得大空间通风系统也与其他一般大舱空间的通风系统不同.目前国内外对海上大空间通风系统尚无明确的规范及要求.在对大空间通风进行模型试验研究和相应的计算机模拟计算基础上,确定大空间通风系统初步方案,为大空间通风系统设计提供科学合理的试验和理论依据.     

A numerical investigation of the impact of turbulence on the feeding rates of Oithona davisae

Individual based numerical simulations of the copepod, Oithona davisae, feeding on motile prey, Oxyrrhis marina, under variable turbulent conditions are performed. These simulations correspond to laboratory observations conducted by Saiz et al. [Saiz, E., Calbet, A., and Broglio, E., 2003. Effects of small-scale turbulence on copepods: the case of Oithona Davisae. Limnol. Oceanogr., 48:1304–1311.].The flow field in the simulation is reconstructed by a kinematic simulation whose characteristic scales are derived from the grid mesh and the dissipation rates of the laboratory experiments. The kinematic simulation provides a simplified model, which while not fully realistic, captures the basic relevant feature of turbulence. A hop and sink swimming behaviour is prescribed for O. davisae, while O. marina moves along helical paths with random changes of directions.Three possible effects are tested: the existence of a time threshold in the duration of the contacts between predator and prey, a progressive reduction of the perceptive distance with increasing turbulence level and an abrupt reduction in feeding of O. davisae when the flow speed, in relation to the copepod position, is higher than a prescribed threshold. This last approach introduces an intermittency in the feeding which depends on the variations of velocity both in space and time within the numerical box.The introduction of the time threshold causes a dome-shaped relationship between the simulated enhancement factor and the dissipation rate, while with the other two effects, a monotonic decrease in the enhancement factor is observed, with values reasonably close to the ones observed in the laboratory experiment. In all the cases, the use of realistic values of biological parameters (e.g. swimming behaviour) reproduces response curves in the range of the observations.     

西安至宝鸡铁路客运专线速度目标值方案研究

西安至宝鸡铁路客运专线是陇海客运通道的重要组成部分,其修建对推动西部大开发战略具有重要意义。快速、安全、舒适、便捷是旅客运输的需求,铁路客运专线作为大众化交通工具,速度目标值的选择是满足旅客快捷需求的基本要素。结合西安至宝鸡铁路客运专线勘察设计工程实践,从通道客流特点入手,以时间目标值选择为基础,分线下工程和线上工程两个方面,从不同速度目标值方案采用的主要技术标准、影响工程投资的主要因素和工程投资经济性、不同速度目标值方案的运营效果和适应性,以及沿线居民对高速铁路经济承受能力及对社会经济影响和路网作用等方面进行系统分析,选择合理的速度目标值方案。同时,也可对新建铁路客运专线速度目标值论证与选择时应考虑的因素、内容及方法提供新的研究思路。     

高校思想政治理论课如何实现“以人为本”——以“法律基础”为例

高等院校的本专科教育是通识教育，应该跳出公共课与专业课的壁垒，积极培养学生的兴趣、知识、能力和人格．高校思想政治理论课应从学生的知识结构、认知能力等实际情况出发，树立“以学生为本”的教育理念，对应时代的发展采取多元的教学方法，及时调整和更新教学内容，以实践育人．     

路政管理为工程建设服务的体会

阐述提前介入容量县至岑溪一级公路梧州工程建设的路政管理，对推动施工顺利进行和确保良好的路容路貌的体会。