一种期刊管理自动化系统（PMAS）的模式

论述了期刊管理自动化的重要性，讨论了对期刊实行自动化管理的具体内容，其中包括期刊管理，期刊服务。文中还提出了组成这一自动化系统的模块化结构，最后探讨了采用微机网络实现其自动化的可能性。     

地区公路网交通量分布仿真及规划

本文研究了地区公路网交通量分布仿真问题。通过“用户最优原理”,建立了模拟公路网上汽车交通量分布的非线性规划模型,并借助该模型研究了NT市公路网的现状、未来情况及多种建设方案实施后所引起的交通量分布的变化情况,据此提出了初步的规划方案。     

Numerical investigation on jet interaction with a compression ramp

A numerical investigation on jet interaction in supersonic laminar flow with a compres- sion ramp is performed utilizing the AUSMDV scheme and a parallel solver. Several parameters dominating the interference flowfield are studied after defining the relative increment of normal force and the jet amplification factor as the evaluation criterion of jet control performance. The computational results show that most features of the interaction flowfield between the transverse jet and the ramp are similar to those between a jet and a flat plate, except that the flow structures are more complicated and the low-pressure region behind the jet is less extensive. The relative force increment and the jet amplification factor both increase with the distance between the jet and the ramp shortening till quintuple jet diameters. Inconspicuous difference is observed between the jet-before-ramp and jet-on-ramp cases. The variation of the injection angle changes the extent of the separation region, the plateau pressure, and the peak pressure near the jet. In the present computational conditions, 120 is indicated relatively optimal among all the injection angles studied. For cold gas simulations, although little influence of the jet temperature on the pressure distribution near the jet is observed under the computation model and the flow parameters studied, reducing jet temperature somehow benefits the improvement of the normal force and the jet efficiency. When the pressure ratio of jet to freestream is fixed, the relative force increment varies little when increasing the freestream Mach number, while the jet amplification factor increases.     

多管脉冲爆震发动机压力反传特性试验与数值研究

为了研究多管脉冲爆震发动机的压力反传特性,采用数值模拟和试验相结合的方法对四管爆震室的压力反传特性进行研究,测量了四管爆震室同时点火和分时点火这两种工作模式下的压力反传规律,利用数值模拟对四管爆震室共用进气道进行研究,分析了共用进气道长度以及在共用进气道内加装分流板对压力反传的影响。试验结果表明,四管爆震室同时工作时,共用进气道产生一道很强的压力扰动波,其峰值压力接近0.12MPa;四管爆震室分时工作时,共用进气道在一个循环内出现四次压力扰动,但扰动波的峰值压力较小。数值模拟的结果表明,在两种工作模式下,爆震室产生的反传压力使发动机入口产生高速倒流,四管分时工作时倒流的速度较小。随着共用进气道的长度增大,反传压力的峰值降低,但发动机入口处仍然存在倒流现象,倒流的速度随着共用进气道的长度增大而减小。共用进气道内加装分流板对反传压力的峰值并没有削弱作用。     

飞机最佳航路爬升时机研究

确定飞机最佳航路爬升时机对提高飞行安全与效率有着重要意义.以北京区域管制的穿越间隔标准为例,根据几种典型航空器型号、起飞重量、不同高度层等相关因素,编程计算穿越高度层前所需的间隔,再考虑飞机调速情况做出修正,最终确定了航路飞行阶段飞机的最佳爬升时机.研究结果可提高管制员工作效率、增加空中交通流量,并可用于容量评估及空域规划研究.     

民用客机缝翼气动噪声数值模拟研究

空中应急离机系统是飞行试验过程中保证试飞机组人员安全的重要措施。对国外一些试飞飞机的空中应急离机系统进行介绍,并对空中应急离机系统的总体设计原则、组成、功能、设计理念及多种子系统设计方案进行研究及分析。     

全自动票据装钉机原理及应用

本文主要论述了全自动票据装钉机机械部分实现的原理及应用，通过自动墩齐压紧，钻孔和装订3部分来实现散乱票据的自动装订。     

机动车辆缴费遥测监查管理系统的研究

针对机动车辆每年应缴的费用，提出了一种全自动开放式机动车辆缴费遥测监查管理系统。它与当前国内外对公路自动收费管理系统进行的研究和应用不同。本系统成本低、功能强、可行性高，有效地改善当前机动车辆缴费管理状况，实现科学监督和管理     

气冷内窥式高温电视监控系统

结合工程实践对典型的高温电视系统的主要部分作一介绍.反映了应用电视技术从最初关注单机技术、单纯硬件到注重在各种环境下应用的防护设计、系统设计及朝着与计算机、视频信号处理、报警技术相结合的发展趋势.该种气冷内窥式高温工业电视系统已在宝钢及多家火力发电厂投入使用.     

Space Debris at the United Nations

Rules for activities in outer space are agreed upon in the Committee on the Peaceful Uses of Outer Space of the United Nations. Several international treaties have been adopted in the 1970s, that is, at a time before space debris became a concern for the international community. In the years 1979–1988 numerous documents were prepared by the UN Secretariat on space debris, but no official discussions of the problem were initiated by states members of the COPUOS. First proposals for introducing the matter to the UN appeared around 1988, after important studies on the subject were published by states and leading intergovernmental organizations. Also the International Telecommunication Union became concerned about the proliferation of space debris in the geostationary orbit and adopted in 1993 a recommendation to restrict the generation of debris and to re-orbit satellites approaching the end of their active lives into disposal orbits beyond the belt populated by active satellites. In 1994, the UN started discussing scientific and technical aspects of space debris. In the following years, with the assistance of experts from prominent space agencies, it elaborated a Technical Report on space debris. Legal aspects of the problem have not yet begun being discussed because the necessary consensus among states members of the COPUOS has not yet been achieved. Very recently, the UN received first information on a wider subject, space traffic management.