中国民用飞机航空材料和材料标准体系研究探讨

航空材料是航空产品的物质基础,纵观我国目前民用飞机的选材特点和现状可以发现,我国现有民机型号选材大部分都在选用国外材料和国外材料标准。国产民机不用国产材料的现象不能不引起我们的思考。从分析国内、外先进航空材料标准的特点入手,探寻出国内航空材料及材料标准体系不适合民用飞机发展的主要缺陷和障碍,并提出构建我国民用飞机航空材料及材料标准体系的新思路。     

论高等教育中创造性人才的培养

高等教育在培养创造性人才时,必须更新教育思想,改革教学方法,注重学生的个性发展,加快课程改革步伐,全方位提高教师素质,加大教育科研力度。     

浅谈如何解决高校资金短缺的问题

用大量的数据说明我国高等教育投入短缺的现状，并在此基础上针对民航学院本身情况提出增加高校资金来源的三个途径：１、开展有偿教育和有偿服务；２、与企业联合办学；３、兴办校内校外第三产业。     

我国商业银行拆入资金业务内部控制体系研究

资金拆入是指商业银行因资金周转需要而在金融机构之间借入资金的行为，是商业银行的一项常规性业务，拆入资金业务内部控制是我国商业银行内部控制体系中的一个重要组成部分。拆入资金业务内部控制体系可以为我国商业银行加强拆入资金业务管理、提高拆入资金业务的运作效率提供可靠的理论借鉴。我国商业银行拆入资金业务内部控制体系的设计必须密切联系我国商业银行拆入资金业务的运作实践。因子分析可以为理论模型提供现实性检验，从而展现我国商业银行拆入资金业务内部控制的现实性微观机理。     

我国会计师事务所核心竞争力的培养

如何培养我国会计师事务所核心竞争力，已是一个很迫切的问题。文章从我国会计师事务所核心竞争力的要素及其制约因素着手分析，提出了提升我国会计师事务所核心竞争力的基本思路。     

中国民航货运市场分析和预测

对中国民航货运市场的特点及其发展状况进行了对比分析，剖析了国民经济与民航货运的内在关系，从而建立了货邮运输量和货邮周转量的非线性回归模型，预测出2005-2020年的中国航空货邮运输量和周转量，为中国民航货运部门进行决策提供了一定的科学依据。     

Modelling solar irradiance variations: Comparison with observations,including line-ratio variations

Solar irradiance variations show a strong temporal and spectral dependence. The progression of the Sun through its activity cycle as well as solar rotation are mirrored in the irradiance variations. The spectral dependence is such that the variations are several magnitudes larger in the EUV than in the visible or infrared.We present a simple 3-component model that is based on the assumption that changes in the solar flux are exclusively due to changes in spot and facular coverage. We compare our model to observations of the spectral solar irradiance variations.Despite its simplicity, we find that the agreement between our model and the observations is surprisingly good. We also explore the reliability and the limitations of our approach by comparing observations of the solar facular contrast and of the changes in spectral line depths with our calculations.     

Communication from Mars: Requirements and Limitations

The exploration of our nearest planets will require relaying large amounts of data to Earth for study and evaluation. However, our ability to communicate at interplanetary distances is limited. In this paper, an evaluation is made of our capability to communicate from the vicinity of Mars using the present S-band deep-space network, prospects for enhancing that performance, and limitations beyond which no additional improvement seems feasible. In addition, requirements for real-time television are evaluated and prospects for improving the communication rates by operating at higher microwave frequencies considered.     

How Well Do Experimental Results on Large Samples of Gas-Laden Amorphous Ice Duplicate Deep Impact’s Findings?

The findings of Deep Impact on the structure and composition of Tempel-1 are compared with our experimental results on large (20 cm diameter and up to 10 cm high) samples of gas-laden amorphous ice which does not contain dust. The mechanical ～tensile strength inferred for Tempel-1: up to 12 kPa is close to our experimental findings of 2–4 kPa. This means that Tempel-1 is as fluffy as our very fluffy, talcum like, ice sample. The thermal inertia: 30<I<100 W?K^?1?m^?2?s^1/2 is close to our value of 80. The density of 350±250 kg?m^?3, is close to our value of 250–300 kg?m^?3, taking into account an ice/silicate ratio of 1 in the comet, while we study pure ice. Surface morphological features, such as non-circular depressions and chaotic terrain, were observed in our experiments. The only small increase in the gas/water vapor ratio pre- and post-impact, suggest that in the area excavated by the impactor, the 135 K front did not penetrate deeper than a few meters. Altogether, the agreement between the findings of Deep Impact and our experimental results point to a loose agglomerate of ice grains (with a silicate-organic core), which was formed by a very gentle aggregation of the ice grains, without compaction.     

正确导入CIS的若干问题探析

文章着重分析了我国企业在导入CIS中容易出现的一些误区，并针对这些问题结合我国的国情和企业的现实情况提出了一些观点和建议。     

民用机场沥青混凝土道面设计方法综述

在大量调研国内外机场沥青道面设计方法的基础上，介绍了国内外典型的机场沥青道面设计原理和方法：结合中国现有民用机场沥青道面设计规范，综合分析了各种设计方法的指标体系，探讨了现有设计方法中存在的问题，并对今后中国的机场道面设计方法研究与发展进行了讨论，提出了一些规范修订的改进建议，为中国民用机场沥青混凝土道面设计理论的完善和修订提供一些理论参考     

Progress of Protection of the Environment and Resources in the United States - A Historical Survey

State and Federal legislative actions intended to improve and to preserve the quality of our environment and to conserve our natural resources were developed and implemented in a logical sequence, synchronized with our own social development and awareness of the need for specific legislative, punitive, or constructive actions. At all times, the desired legislation was developed through a consensus of opinions, needs, and costs that were to be incurred by the affected parties. In some cases, the Federal Government found it necessary to increase its budget allocations in areas where an immediate relief was needed and large losses were anticipated.     

英语精读课教学方式探索

在信息时代如何提高课堂教学的信息量？如何满足学生的求知欲？本结合作的教学经验，从词汇、听力及阅读三个方面提出了有关英语教学的几点实践性见解。     

Land Warfare

The future conflicts that our nation may have to fight are more likely to be tactical than strategic. Land warfare forces, including the related elements of Tacair, play a pivotal role in our tactical combat capabilities, as evidenced by the fact that in World War II German production of virtually all critical material was still continuing to increase until Germany was on the verge of being physically overrun. Yet, our land warfare forces have been comparatively slow to embrace new technological developments, with such equipment as the tank, the rifle, and the cannon still playing major roles. Unfortunately, those instances wherein new technology has been adopted do not present a uniformly satisfying picture. One factor potentially contributing to this has been the inherent compartmentalization and fragmentation of our land warfare RDT&E efforts, with an overview of the interrelationships between aircraft and armor, rifles and rockets, and helicopters and howitzers seldom having been attempted.     

Measurement of Total and Spectral Solar Irradiance

The Sun’s electromagnetic radiation powers our solar system. In the case of the Earth it heats the lands and ocean, maintains our atmosphere, generates clouds, and cycles water. For other planets and minor bodies, similar and appropriate physical processes occur, also powered by the Sun. The Sun varies on all time scales and a precise knowledge of the Sun's irradiance and its variation is essential to our understanding of environments and physical conditions throughout our solar system. Measurements of solar irradiance and its variation can only be made from space, and almost thirty years of observation have now established that the total solar irradiance (TSI) varies by only 0.1 to 0.3%, while certain portions of the solar spectrum, the ultraviolet for example, vary by orders of magnitude more. This paper provides an overview of TSI observations and of spectral irradiance observations from the ultraviolet to the near infrared.     

大型动力装置结构振动试验设备

本文通过对我单位引进的目前国际上较为先进的振动试验设备简评,结合航天器大型动力装置说明结构振动试验研究方法和手段.简略地举例介绍了我们在该领域中已经完成和正在进行的研究工作.     

对海作战无人机指挥控制系统发展综述

首先对国外无人机指挥控制系统的发展现状、趋势进行了分析,引出我国对海作战无人机指挥控制系统产品谱系、技术领域发展路线的研究需求,还分析了我国对海作战无人机的作战需求和部署模式,得出不同形态控制站的发展思路和技术路线,同时结合美军无人机指挥控制系统核心能力发展情况,提出我国对海作战无人机指挥控制系统重点技术发展规划,为我国对海作战先进无人机指挥控制装备的研发进行探索。     

论提高驾驭社会主义市场经济的能力

市场经济是构建社会主义和谐社会的物质基础和组成部分,因此,提高驾驭市场经济能力极为重要.市场经济的可驾驭性与不可驾驭性的矛盾,是推动市场经济发展和提高驾驭能力的直接动力.只有从理论和实践两个方面,提高驾驭社会主义市场经济的能力,才能促进国民经济持续、健康发展,从而达到加快现代化建设和全面建成小康社会的目的.     

Multi-view space object recognition and pose estimation based on kernel regression

The application of high-performance imaging sensors in space-based space surveillance systems makes it possible to recognize space objects and estimate their poses using vision-based methods. In this paper, we proposed a kernel regression-based method for joint multi-view space object recognition and pose estimation. We built a new simulated satellite image dataset named BUAA-SID 1.5 to test our method using different image representations. We evaluated our method for recognition-only tasks, pose estimation-only tasks, and joint recognition and pose estimation tasks. Experimental results show that our method outperforms the state-of-the-arts in space object recognition, and can recognize space objects and estimate their poses effectively and robustly against noise and lighting conditions.     

Outer Plasmaspheric Plasma Properties: What We Know from Satellite Data

Our understanding of the composition, density, and temperature structure of the outer plasmasphere has undergone several major revisions since the discovery of the plasmasphere over 35 years ago. Each new era of understanding was brought about by the launching of satellites carrying suites of plasma diagnostic experiments each more sophisticated than its predecessor. Instead of each new generation of missions providing incremental advancement in our knowledge of the plasmasphere's plasma properties, they most often than not, initiated a complete re-thinking of our understanding. There are still a number of observational "puzzles" and large gaps in our knowledge of how plasmaspheric structure and plasma properties change with geomagnetic storm and substorm activity. As we develop new missions to attempt to globally image the outer plasmasphere in order to put simultaneous multi-spacecraft observations into context, we undoubtedly will uncover new tantalizing observations that will cause us to re-think our mental picture of the plasmasphere. What we have learned from satellite data about the chemical composition, density, temperature and pitch-angle distribution properties and their variability is outlined in this review paper.