论新闻报道策划的实践意义

新闻报道策划 在近几年的新闻实践中应用非常广泛。就报道主题、整合信息、沟通受众和发挥媒体整体优 势等方面论述了新闻报道策划的实践意义。     

政府绩效评估与企业绩效评估比较及借鉴意义

政府部门与企业同属社会公共组织,两者的绩效评估具有可比性。政府绩效评估和企业绩效评估可以相互借鉴:政府绩效评估可以借鉴企业绩效评估的评估技术、价值导向、评估方法;政府绩效评估可以引导企业绩效评估关注企业的社会责任。     

论我国政府绩效评估的实践途径

为适应我国行政体制改革和加入WTO的要求,就必须重视政府绩效评估。目前我们要建立完整的政府绩效评估内容、程序和方法,使政府绩效评估走向制度化、规范化和科学化的道路。     

国产梁式引线器件平面集成混频器

介绍鳍线单平衡混频器电路的设计。混频器使用国产梁式引线混频二极管。混频器在31～37GHz的频率范围内,变频损耗小于10dB,最小值为7.2dB。     

加强政府诚信建设的制度探讨

政府诚信是政府为政之本。政府诚信受观念、环境、制度、体制等诸多因素制约。从制度层面揭示政府诚信建设的制度需求、制度缺陷,会为政府相关制度的创新提供对策与思路。     

萃取富集原子吸收法测定烘焙食品中痕量铅

烘焙食品试样经灰化处理后,用APDC DDTC MIBK体系萃取富集试液中的铅,利用空气 乙炔火焰原子吸收法测定烘焙食品样品中铅的含量.考察了仪器的工作参数、试液的酸度、反应时间和萃取时间等测定条件,并对可能存在的元素进行了干扰实验.在最佳条件下本法测定铅的相对标准偏差为1 5%—2 6%,回收率为98 2%—102 1%.     

论基础教育的均衡发展与政府责任

基础教育的均衡发展 ,是契合时代特征的一种全新的教育理念和教育发展观 ,我们应站在战略的高度来认识基础教育均衡发展的重要意义。针对我国基础教育非均衡发展的现状 ,我们认为 ,政府对推进基础教育的均衡发展应负有主要的责任。     

浅谈消息导语的构思

导语是一篇消息的精华和灵魂。导语直接影响受众的阅读兴趣、情趣,体现了记者的功力;构思起着关键作用。如:以反常之事抓平常之心,用描写之法给读者深刻印象,以悬念设置充任名导角色,寻找“新近点”,古老典故寓新意,口语化添情趣,等等;还需要不断的创新。     

Dietary and Inhalation Intake of Lead and Estimation of Blood Lead Levels in Adults and Children in Kanpur, India

This research was initiated to study lead levels in various food items in the city of Kanpur, India, to assess the dietary intake of lead and to estimate blood lead (PbB) levels, a biomarker of lead toxicity. For this purpose, sampling of food products, laboratory analysis, and computational exercises were undertaken. Specifically, six food groups (leafy vegetables, nonleafy vegetables, fruits, pulses, cereals, and milk), drinking water, and lead air concentration were considered for estimating lead intake. Results indicated highest lead content in leafy vegetables followed by pulses. Fruits showed low lead content and drinking water lead levels were always within tolerable limits. It was estimated that average daily lead intake through diet was about 114 microg/day for adults and 50 microg/day in children; tolerable limit is 250 microg/day for adults and 90 microg/day for children. The estimated lead intakes were translated into the resultant PbB concentrations for children and adults using a physiologically-based pharmacokinetic (PBPK) model. Monte Carlo simulation of PbB level variations for adults showed that probability of exceeding the tolerable limit of PbB (i.e.,10 microg/dL) was 0.062 for the pre-unleaded and 0.000328 for the post-unleaded gasoline period. The probability of exceeding tolerable limits in PbB level was reduced by a factor of 189 in the post-unleaded scenario. The study also suggested that in spite of the introduction of unleaded gasoline, children continue to be at a high risk (probability of exceeding 10 microg/dL = 0.39) because of a high intake of lead per unit body weight.     

基于提前期的多阶通用件库存模型

针对单个企业内部应用通用件的环境,在假定一个多阶生产系统的基础上,对应用通用件的库存量水平及其成本进行了分析,建立了多阶通用件库存模型,提出通过对采用通用件和不采用通用件的成本差异的比较,来决策多阶生产系统中在哪一阶工序采用通用件,并求解出每一阶工序优化的基本库存水平。