证券市场自律监管的组织结构反思与制度安排

证券市场的自律监管是证券市场存在和发展的基石。本文通过对我国现存证券市场自律监管组织结构的反思，探讨了我国证券市场自律监管的制度安排。     

上市公司股份回购及其财务分析

公司回购股票,将引起股价变动,引起每股收益变化.分析这种行为,趋利避害,对上市公司的自我发展与调节,以及证券市场的完善与健全,有着重要意义.     

关于《证券法》中民事责任缺陷的思考

《证券法》的颁布与实施 ,为规范证券市场 ,使证券市场走向公开、公平和公正 ,减少股市运作的制度和行为风险 ,为保障投资者的合法权益 ,提供了法律保障。各国证券法为了保护投资者的投资热情 ,以保证证券市场的活跃 ,大都规定了维护市场“三公” ,即公开、公正、公平的原则。他们的证券法律法规规定了有关民事责任的赔偿制度 ,如美国 1 93 4年的《证券交易法》中规定了操纵价格、短线交易、虚假陈述等的民事赔偿责任。因此 ,应该建立完善证券市场中的民事法律责任制度 ,在制定后续相应的证券法规和司法解释特别是在制定《证券法》实施细则时应该规定具体的、具有可操作性的证券违约责任和侵权责任 ,补充和完善《证券法》规定的不足和欠缺     

关于<<证券法>>中民事责任缺陷的思考

《证券法》的颁布与实施，为规范证券市场，使证券市场走向公开、公平和公正，减少股市运作的制度和行为风险，为保障投资者的合法权益，提供了法律保障。各国证券法为了保护投资者的投资热情，以保证证券市场的活跃，大都规定了维护市场“三公”，即公开、公正、公平的原则。他们的证券法律法规规定了有关民事责任的赔偿制度，如美国１９３４年的《证券交易法》中规定了操纵价格、短线交易、虚假陈述等的民事赔偿责任。因此，应该建立完善证券市场中的民事法律责任制度，在制定后续相应的证券法规和司法解释特别是在制定《证券法》实施细则应该规定具体的、具有可操作性的证券违约责任和侵权责任，补充和完善《证券法》规定的不足和欠缺。     

电子地图产业发展分析

介绍了我国电子地图发展的现状和面临的问题,强调应加强企业竞争力、强化政府监管、实现资源共享等措施以促进导航产业的高速发展。     

移动设备国际利益公约关于空间资产特定问题的议定书（草案）（连载之三）

第三章 空间资产国际利益登记处条款 第二十八条 监管机关 1、监管机关应由为通过开普敦公约空间资产议定书而召开的外交会议指定或根据该会议的决议指定,且该监管机关能够胜任并且愿意承担监管责任。     

我国自主卫星导航系统及其产业发展的八大要点

我国自主卫星导航系统及其产业发展涉及面非常广泛,本文叙述了八个要点,阐述了我国卫星导航产业发展需要重点加强和解决的问题。它们是：GNSS四大全球系统格局业已见端倪,北斗卫星导航系统的机遇和挑战;开放与合作是全球化条件下产业生存发展的必由之路;中国卫星导航系统及其产业首当其冲是要有国策并宣示;中国卫星导航系统及其产业亟待强化宏观管理和统筹规划,行业要自律、要联合、要创新,共同锻造和完善产业价值链;企业要为用户带来切实好处和增值服务,快速做实做大做强;产业要坚持应用大众化,技术国际化,市场全球化发展之路;准确处理好六大关系,造就我国卫星导航的大国强国地位。     

上市公司股份回购及其财务分析

公司回购股票，将引起股价变动，引起每股收益变化。分析这种行为，趋利避害，对上市公司的自我发展与调节，以及证券市场的完善与健全，有着重要意义。     

建立我国商业航天监管体系的初步探讨(上)

<正>2015年起,中国商业航天加速启航。在国内政策的支持下,我国先后迅速涌现了一批商业火箭研制公司、商业卫星研制公司、商业测运控服务公司、商业卫星应用服务公司,开展了商业火箭发射入轨试验、商业火箭低空发射回收试验、商业卫星在轨应用等活动。美国是商业航天活动、商业航天监管的全球领跑者。美国构建了全球最为完善的商业航天监管体系,具体包括制定了多部涉及卫星通信、卫星导航、卫星遥感、     

建立我国商业航天监管体系的初步探讨(下)

<正>(接上期)三我国商业航天监管现状分析目前,我国航天方面的法规主要是国务院及其下属主管部门制定的行业性行政法,一部分内容属法律法令,但有一部分内容属行业规定(表6)。另外,2019年5月,国家航天局出台了《国家民用遥感数据管理暂行办法》,对民用遥感数据共享、应用方面出台了一些管理规定。     

On the stability of the track of the space elevator

A string moving with geostationary angular velocity in its radial relative equilibrium configuration around the Earth, reaching from the surface of the Earth far beyond the geostationary height, could be used as track for an Earth to space elevator. This is an old dream of mankind, originating about 100 years ago in Russia. Besides the question of feasibility from a technological point of view also the question concerning the stability of such a configuration has not yet been completely solved. Under the assumption that a proper material (carbon nanotubes) is available, making the connection possible technologically, we address the question of existence and stability of the radial relative equilibrium of a tapered string on a circular geosynchronous trajectory around the Earth, reaching from the surface of the Earth far beyond the geostationary height.     

On the Possibility of the Existence of Volatile Compounds in the Region of the Scott Crater on the Moon

In this paper, we analyze the illumination conditions, the thermal regime, and the possibility of deposits of volatile compounds existing in the vicinity region (NSR S5 region) near the southern pole of the Moon. It has been found that there are no permanently shadowed zones near the Scott crater and the NSR S5 region, though the temperature conditions allow the of compounds such as CH₃OH, SO₂, NH₃, CO₂, H₂S, C₂H₄, and water to remain stable relative to evaporation for a long time (≥1 Gyr). It has been also shown that compounds like CO and CH₄ cannot stably exist in these regions.     

Estimation of the current density and analysis of the geometry of the current system surrounding the Earth

The results of an investigation of the distribution of plasma pressure, pressure gradients, and magnetic field near the equatorial plane in the plasma ring surrounding the Earth under magneto-quiet conditions are presented. Observational data obtained during the international THEMIS mission are used. The picture of the distribution of transverse-current density near the equatorial plane was obtained under assumption of observing the magnetostatic balance condition at geocentric distances from 6 to 12R _E. In estimating the integral transverse current it was accepted that in daytime sector the magnetic-field minima on magnetic field lines are not localized in the equatorial plane. Estimates of the integral transverse current were obtained, which demonstrate the possibility of closing nighttime transverse currents at geocentric distances of up to ～12R _E inside the magnetosphere, which form a high-latitudinal continuation of the ring current.     

对老年人体育锻炼负荷量监控方法的探讨

通过对老年人体育锻炼活动的情况进行相关调查，发现目前老年人体育锻炼中存在一些误区。因此本文针对这些现实情况提出，应根据实际情况运用一些简单易行的方法来对老年人体育锻炼实施医务监督，达到提高老年人体育锻炼的科学性。     

Estimating the accuracy of the technique of reconstructing the rotational motion of a satellite based on the measurements of its angular velocity and the magnetic field of the Earth

The paper has studied the accuracy of the technique that allows the rotational motion of the Earth artificial satellites (AES) to be reconstructed based on the data of onboard measurements of angular velocity vectors and the strength of the Earth magnetic field (EMF). The technique is based on kinematic equations of the rotational motion of a rigid body. Both types of measurement data collected over some time interval have been processed jointly. The angular velocity measurements have been approximated using convenient formulas, which are substituted into the kinematic differential equations for the quaternion that specifies the transition from the body-fixed coordinate system of a satellite to the inertial coordinate system. Thus obtained equations represent a kinematic model of the rotational motion of a satellite. The solution of these equations, which approximate real motion, has been found by the least-square method from the condition of best fitting between the data of measurements of the EMF strength vector and its calculated values. The accuracy of the technique has been estimated by processing the data obtained from the board of the service module of the International Space Station (ISS). The reconstruction of station motion using the aforementioned technique has been compared with the telemetry data on the actual motion of the station. The technique has allowed us to reconstruct the station motion in the orbital orientation mode with a maximum error less than 0.6° and the turns with a maximal error of less than 1.2°.     

实施“三位一体”教育模式 提高学生的综合素质

本文介绍了“三位一体”教育模式的内容,描述亍我们实施该模式所采取的措施及取得的成效。实践表明,“三位一体”教育模式能够提高学生的综合素质,为学生毕业后的发展打下坚实基础,对教育模式的改革具有一定的指导意义。     

从应变计现状看电阻式传感器的前景

电阻式传感器的核心部件——电阻应变计是目前最常用的应力分析的敏感元件。也常用于测量力、压力、扭矩和加速度等物理量。作者简要回顾了电阻应变计的发展历史，介绍了电阻应变计的结构、分类及现状，展望了电阻式传感器的前景。     

System of works on numerical modeling of the dynamics of the structure of the Space Radiotelescope in the RadioAstron project

The results of modeling the dynamics of the Space Radiotelescope are presented. The results of ground-based vibration-dynamic tests are used to validate the calculation models and estimate the damping levels. The dynamic distortions of the reflecting surface caused by the operation of the pointing mechanism of the high-gain antenna are estimated.     

Optimization of the trajectory of the spacecraft insertion into the system of heliocentric orbits

The possibility of the spacecraft insertion into the system of operational heliocentric orbits has been analyzed. It has been proposed to use a system of several operational heliocentric orbits. On each orbit, the spacecraft makes one or more revolutions around the Sun. These orbits are characterized by a relatively small perihelion radius and relatively high inclination, which allows one to investigate the polar regions of the Sun. The transition of the spacecraft from one orbit to another has been performed using an unpowered gravity assist maneuver near Venus and does not require the cruise propulsion operation. Each maneuver transfers the spacecraft into the sequence of operational heliocentric orbits. We have analyzed several systems of operational heliocentric orbits into which the spacecraft can be inserted by means of the considered transportation system with electric propulsion (EP). The mass of the spacecraft delivered to these systems of operational orbits has been estimated.     

火箭推进剂液体晃动关机响应的数值仿真

本文采用VOF方法对火箭发动机关机阶段所引起的液体晃动进行了数值仿真，以氧化剂贮箱为例，得到了贮箱无阻尼环和带阻尼环时的晃动仿真图和液体质心变化曲线，检验了VOF方法处理碎波的能力。