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嵌入式实时操作系统中的程序设计 总被引：1，自引：0，他引：1
于国华 《洛阳工业高等专科学校学报》2003,13(1):38-39,13
介绍嵌入式实时多任务操作操作系统中任务调度和任务间的通信，并给出嵌入式实时多任务操作系统中程序设计的原则。 相似文献
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Many countries use centralized school choice procedures to assign pupils to schools. To address excess demand for a particular school, ties are broken according to priority points granted based on various criteria, such as proximity to the school. Using a unique reform undertaken in Madrid (Spain), we estimate the impact of abolishing residence-based priorities on families’ school choices, the stated motivation for choosing a school, and the final school allocation. Utilizing several administrative datasets on school applications, we find that the reform increases families’ out-of-district school assignments and assignments to schools further away from their home address. Parents of immigrant children did not change their application behavior in the first years of the reform but caught up with natives three years after its implementation. Children generally accessed slightly better-performing schools, particularly those from lower-educated backgrounds. 相似文献
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Although child maltreatment medical research has benefited from several multi-center studies, the new specialty of child abuse pediatrics has not had a sustainable network capable of pursuing multiple, prospective, clinically-oriented studies. The Child Abuse Pediatrics Network (CAPNET) is a new multi-center research network dedicated to child maltreatment medical research. In order to establish a relevant, practical research agenda, we conducted a modified Delphi process to determine the topic areas with highest priority for such a network. Research questions were solicited from members of the Ray E. Helfer Society and study authors and were sorted into topic areas. These topic areas were rated for priority using iterative rounds of ratings and in-person meetings. The topics rated with the highest priority were missed diagnosis and selected/indicated prevention. This agenda can be used to target future multi-center child maltreatment medical research. 相似文献
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Debby Amis 《The Journal of perinatal education》2009,18(2):9-12
The author of this guest editorial discusses the new perinatal standards endorsed by the National Quality Forum and goals to improve the health of all Americans announced by the National Priorities Partnership. She discusses the impact of the standards and goals on maternity care and what childbirth educators can do to help implement the standards and advance the goals. 相似文献
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根据广大农村地区经济社会发展的现实情况,按照省委省政府关于全省新农村建设要“结合实际,因地制宜,分类推进”的原则,把全省划分成三类区域,根据不同特点,对新农村进行规划和建设,提出各区域发展的重点任务。 相似文献
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Do presidential candidates adapt their spot messages to the public's interests? This study conducts a computer content analysis of the texts of presidential television spots from 1952–2000. Public opinion poll data on the most important issues for voters, in each campaign, are used to structure the searches. The extent to which candidate spot messages conform to the public issue agenda is determined. Democrats’ and challengers’ spot messages are significantly more aligned with the public policy priorities than Republicans or incumbents. There is no significant difference between the correlations for winners versus losers. Finally, in 5 of the 13 elections there is a significant relationship between the issues covered by the two candidates. Clearly, some candidates are better at adapting their television messages to voters and in some elections the candidates tend to discuss the same policy issues. 相似文献
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现代环境问题绝大多数是人为问题,人为问题需要人来解决,生态现代化理论为解决环境问题提供了新思路。本文分析了地球环境的三种影响因素,估计了21世纪的世界环境压力,介绍了生态现代化的基本原理,分析了中国现代化的环境压力和国际差距,阐述了中国生态现代化的路径图和战略重点。 相似文献
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基于NOAA公布的2011—2020财年总统预算信息,对预算案经费变化趋势、投向投量和预算内容进行评析,以此考察美国政府在海洋大气领域宏观政策导向的变化。研究显示:(1)2016财年后,美国重新聚焦国家安全和核心政府职能,国家海洋管理政策从保护海洋环境为主转变为保障经济发展为主的新政策,NOAA预算资金大幅降低;(2)降低极端天气和水文事件的影响、最大化海洋和海岸带资源的经济贡献、空间创新成为NOAA未来一段时期的工作重点和优先事项;(3)为确保核心职能和优先事项,2020财年,NOAA六大直属机构做出诸多计划调整。 相似文献
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为改变"市强县弱"、城乡二元结构突出的现状,徐州提出"县区强则徐州强",把县域经济作为"两个率先"的战略重点,推出了县域经济发展的系列新举措,使县域经济发生深刻变化,进入超常规发展、直线性上升的新时期。 相似文献
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