光度法同时测定磷和硅的研究

用钼蓝法分别测定磷和硅的含量多有报导［１］［２］［３］，但用该法对其进行同时测定未见报导．本文探讨了用钼蓝法同时测定磷和硅，确定了其测定条件．本法具有简便、快速、不需特殊试剂等特点，可用于水等试样中磷和硅的同时测定．     

人机工程学的发展及人机系统的可靠性

本文介绍了人机工程学(工效学)这一新兴边缘学科的研究内容、发展及现状,讨论了人-机系统的可靠性并着重讨论了人的操作可靠性,探讨了按人为差错进行可靠性分析与可靠性估计的人为差错和可靠性分析逻辑推演法(HERALD法)及系统能力方法(SC方法)。 本文的结论可供系统管理工作者及设计工作者,特别是可靠性管理及可靠性设计工作者参考。     

Ng10二通插装阀结构形状及参数的试验研究

本文提出了测量Ng10二通插装阀静,动态性能的试验方法,测试了阀套开口形状、各种尾部结构的阀芯、阀芯行程、阀芯锥度、控制盖板阻尼孔尺寸等结构形状参数对插装阀静、动态性能的影响,并对试验结果进行了对比分析.在此基础上.确定了本文述及条件下的最佳结构形状和参数.     

Estimating Fatality Reductions from Increased Safety Belt Use

Fatality reductions from increases in safety belt use are estimated taking into account that drivers who change from being nonusers to being users have lower accident involvement rates than the remaining nonusers, a process referred to as "selective recruitment." Analytical functions are derived which express expected fatality reductions in terms of changes in safety belt use rates from an initial rate. The function parameters are determined by requiring that computed average crash rates for nonusers be 53% higher than the rates for users, a recently determined empirical value. These functions show that, depending on the initial use rate and use rate increase, selective recruitment may increase or decrease expected fatality reductions. However, effects are relatively small, in no case exceeding +/- 5.3%.     

The Transport System and Society’s Metabolism in the UK

This paper analyses the interrelation between the transport system and measures of resource consumption such as material and energy consumption over a 60-year period (1937–1997) in the UK. Non-motorized transport and time consumption for mobility are estimated in addition to conventional measures of transport. During the period analyzed, the UK population grew by 20% while transport of goods and persons increased more than threefold and material and energy consumption almost doubled. The transport intensity of domestic material input (DMI) doubled to 300 ton-kilometers (tkm) per ton of DMI while the transport intensity of domestic energy consumption (DEC) doubled to 20 tkm per gigajoule (GJ) of DEC. Thus, while the material and energy intensity of GDP declined significantly, a well-established trend in many advanced countries, the transport intensity of materials and energy consumption rose. These findings suggest a close link between transport, economic development, and long-term structural transformations. In the case of personal transport, a rebound effect was also observed: whereas the average speed of transport has greatly increased, the average number of hours per day devoted to personal transport has not declined.     

试论"两课"教学与学生教育管理的"四个结合"

侧重于理论教育的"两课"教学与侧重于实践教育的学生教育管理如何进行有机结合,以增强德育的实效性,一直是"两课"教学工作者与学生教育管理工作者普遍关心和探讨的问题.解答这一问题的有效答案是实现4个结合,即两课体系与学生教育管理体系相结合;两课教学内容与学生教育管理内容相结合;两课教学法与学生教育管理工作方法相结合;两课教师队伍与学生教育管理工作相结合.     

浅析体育教学中的“三重”语言艺术

体育教学语言是教师向学生传授知识的载体,交流感情的方式及培养人才的工具,亦是影响教学效果的重要因素之一.文章通过对体育教学语言的分类,即丰富多彩的有声语言、千姿百态的形体语言、独特生动的哨音语言,对"三重"语言的特点及其运用方法进行论述.体育教学语言也正是将"三重"语言有机地融为一体,协调一致,相辅相成,充分体现体育教学语言艺术的特性.     

基于"透明"神经网络的模拟电路故障诊断

本文通过分析BP神经网络用于模拟电路故障诊断时的缺点,提出了一种新的神经网络．称为“透明”神经网络(TANN)．然后将TANN用于模拟电路子网络级故障诊断．并通过实例验证了该诊断方法的有效性．     

股票首次公开发行、承销商声誉与我国保荐制度的建立

承销商在股票首次公开发行中起着决定性作用,而承销商声誉对于其作用的发挥则有着重要的影响。本文首先对股票首次公开发行的过程及承销商的作用进行了概述,接着在借鉴国外学者相关研究的基础上,分析了承销商声誉对首次公开发行定价的影响。研究发现,由有声望的承销商承销的股票其定价相对较高,同时其收取的费用也相对较多。最后本文对我国保荐制度的建立与具体实施提出了相关建议。     

“格籍”是去还是留？——从“移意”说起

本文对<修辞精品六十格>中谭永祥先生所创建的"移意"、"会意"两种辞格能否取得"格籍"持怀疑态度.认为,因"移意"缺乏表现力,不应被立为辞格;鉴于"会意"定义的模糊性,难以让读者把握其本质特征,应重新命名和界定,或划归现有辞格.