超灵便型多用途船舶的开发和设计

主要介绍了灵便型多用途船舶市场需求的趋势以及其设计理念。这一新理念的3万吨级多用途船被命名为"超灵便"型,4家中国船厂迄今收到了总共22艘该型船舶的订单,另有许多其他船舶公司表达了今后订购的意向。     

太白蓼的生药学研究

作者对陕西特有民间药太白蓼(Polygonum taipaishanense Kung.)从来源、药材性状、显微组织结构、粉末特征和理化鉴定等方面进行了系统的生药学研究,同时进行了鞣质定性及含量测定,为太白蓼的鉴别、品质评价、质量标准的制定及进一步的开发利用提供了科学依据。     

Aggregate expenditure elasticity for transport and communication in Australia

For the purpose of estimating Engel elasticity, one needs to find the best functional form among various alternatives. In this paper, a new function, which is called the double semi-log Engel function turns out to be the best functional form for the transport and communication items in Australia on the basis of the distance function (D²) criterion, and the non-nested hypothesis testing procedure. This function is then used to estimate total expenditure elasticity, and the percentage change in consumer demand due to changes in total expenditure and total expenditure inequalities; using the 1975–76 Household Expenditure Survey data. The results of the analyses demonstrate that transport and communication is a necessary item in Australia on the basis of two criteria, viz., its elasticity is not significantly greater than unity, and the percentage change in demand increases with a decrease of the total expenditure inequality [emphasised by Iyengar (I960)]. Policy implication of the analyses has also been discussed.     

液化天然气(LNG)接卸港工程

介绍了LNG国际贸易、接收站建设、LNG运输船、接卸港口工程的选址及设计、分销输运方式，讨论了关于《液化天然气码头设计规程》（试行）的修订意见。     

现代军用通信设备造型设计探讨

由于多方面的原因，我国军用通信设备的外观造型总的来说显得单调、呆板，不够简洁明快，色彩不够协调，缺乏时代感和自己的风格；国外的同类设备在外观造型上则构思新颖，精致轻巧，轮廓清晰，线条明快，色调柔和，且注意整机、面板及其他单元模块的协调安排，布局合理，形成了良好的整体效果。对我国军用通信设备造型设计的现状和差距进行了分析，讨论了造型设计的基本概念、美学法则在造型设计中的具体运用以及军用通信设备具体的造型设计方法，并给出了造型设计实例。     

公路桥头跳车原因分析及防治措施

从设计、施工、材料三个方面系统地分析了以往引发公路跳车的原因，并针对产生跳车的原因在省道宝平公路工程中提出了相应的设计、施工、材料三个方面的防治措施。     

船舶操纵仿真中图谱数值化方法的研究

在船舶操纵仿真中涉及大量的图谱转换工作,传统的图谱处理方法在精度和工作量上存在着一对矛盾。本文试图通过应用正弦小波拟合方法来替代传统折线方法,并在某些图谱上得到验证,可望在类似图谱数值化上得到推广和应用,以提高计算精度和减少计算工作量。     

Ramp meters on trial: Evidence from the Twin Cities metering holiday

Ramp meters in the Twin Cities have been the subject of a recent test of their effectiveness, involving turning them off for eight weeks. This paper analyzes the results with and without ramp metering for several representative freeways during the afternoon peak period. Seven performance measures: mobility, equity, productivity, consumers’ surplus, accessibility, travel time variation and travel demand responses are compared. It is found that ramp meters are particularly helpful for long trips relative to short trips. Ramp metering, while generally beneficial to freeway segments, may not improve trip travel times (including ramp delays). The reduction in travel time variation comprises another benefit from ramp meters. Non-work trips and work trips respond differently to ramp meters. The results are mixed, suggesting a more refined ramp control algorithm, which explicitly considers ramp delay, is in order.     

武器装备的可靠性管理和对策

介绍了可靠性工作发展的简史,详细叙述了可靠性管理的内涵及如何实施,提出了舰船武器装备开展人-机-环境系统的研究,提升可靠性管理水平的对策。     

民间非营利组织与企业会计核算的差异

《民间非营利组织会计制度》(以下简称《非营利制度》)和《企业会计制度》之间,在总体原则上是求同的,但在资产核算、负债核算、收入核算、财务会计报告等具体方法上存在差异。