我国社会消防安全教育现状影响因素及对策分析

当前我国社会消防安全教育主要存在观念较为陈旧、机制不够完善、内容不够全面、方法缺乏创新、教育力量薄弱等突出问题。在分析影响我国社会消防安全教育效果诸因素的基础上,提出树立科学观念、充实教育内容、探索方法手段创新、完善教育机制、健全教育队伍的对策,以逐步提升社会消防安全教育水平。     

固冲发动机进气道工作过程干扰因素

分析了固冲发动机进气道、补燃室、尾喷管一体化流场中,在不同干扰因素下的进气道工作过程,研究了进气道出口燃气压力在时间上和空间上的突变以及尾喷管喉径的突变对进气道内部流动过程的影响,得到了不同干扰因素下的进气道工作特性.结果表明:进气道出口燃气压力在时间上的突变容易引起进气道出口燃气反压分布不均;进气道内流场对压力空间突...     

部队思想政治教育可接受性的制约因素及对策研究

思想政治教育是我军的优良传统和政治优势。＂可接受性＂是保证思想政治教育卓有成效的重要因素。通过挖掘部队思想政治教育可接受性的制约因素,探寻消除制约因素影响的对策,以期进一步提高部队思想政治工作的成效。     

新疆高校学科建设的影响因素分析

新疆高校的学科建设存在着学科基础薄弱、学科定位失当、学科资源短缺等发展瓶颈。本文从外部影响因素和内部影响因素来分析新疆高校的学科建设。外部影响因素包括政策环境、经济发展水平、文化环境等,内部环境影响因素包括学科方向、学科定位、学科队伍、学科基地、管理机构等。     

学习迁移理论在地理教学中的应用

在地理教学中运用学习迁移理论,不仅有助于学生构建完整的知识体系,而且有助于学生素质的提高和全面发展,对学生学习迁移能力提高有很大的促进作用。地理教师在教学中必须充分重视和运用迁移理论,达到“为迁移而教”的教学境界。     

榴弹射表编拟中符合系数和符合对象的综合选取

基于综合符合思想,通过诸参数对于弹道影响敏感特性的分析,及诸符合方案的对比论证,提出了在一个射角下,以零阻力系数C_(xo)和相对静力臂系数h/l作为符合系数,以射程X和偏流Z为符合对象的符合方案;同时,与国外符合方案进行了对比。     

某型转管航炮对空中目标射击命中概率分析

研究了影响航炮射击的误差因素,对误差的构成及其分布特性进行了分析。研究目标在命中平面上的投影面积,得出目标投影面积的计算方法,并进行了等效简化。在此基础上,计算航炮对空中目标射击的单发命中概率和连发数为k时的命中概率。利用MATLAB编写程序求解航炮射击命中概率,以某型六管航炮为例对其在不同射速条件下对目标的命中概率进行了数值计算,为航炮的作战使用提供参考。     

Robust cubature Kalman filter method for the nonlinear alignment of SINS

Nonlinear initial alignment is a significant research topic for strapdown inertial navigation system(SINS).Cubature Kalman filter(CKF)is a popular tool for nonlinear initial alignment.Standard CKF assumes that the statics of the observation noise are pre-given before the filtering process.Therefore,any unpredicted outliers in observation noise will decrease the stability of the filter.In view of this problem,improved CKF method with robustness is proposed.Multiple fading factors are introduced to rescale the obser-vation noise covariance.Then the update stage of the filter can be autonomously tuned,and if there are outliers exist in the observations,the update should be less weighted.Under the Gaussian assumption of KF,the Mahalanobis distance of the innovation vector is supposed to be Chi-square distributed.Therefore a judging index based on Chi-square test is designed to detect the noise outliers,determining whether the fading tune are required.The proposed method is applied in the nonlinear alignment of SINS,and vehicle experiment proves the effective of the proposed method.     

The Gravity of Arms

The aim of this paper is to investigate the determinants of international arms transfers in a gravity model framework. By distinguishing between the decision to export arms (extensive margin) and the value of the arms exported (intensive margin), while also considering its interdependence, is what differentiates this paper from previous research. A theoretically justified gravity model of trade augmented with political and security motives is estimated using a two-stage panel data approach for 104 exporting countries over the period from 1950 to 2007. In addition to the usual gravity variables related to the economic mass of the trading countries and the trade cost factors, the model is extended with political and security factors. The level of democracy in both trading partners, political differences between trading partners and voting similarity with the United States in the UN General Assembly of the countries engaged in trade are the main political factors, whereas the existence of conflicts, military pacts, and embargoes are taken as security motives. The key result indicates that both political and security motives are an important determinant of an arms trade, but their effects on the extensive margin of exports (the decision to order a transfer) differs from their effect on the intensive margin (average value of exports). Moreover, the relative importance of the factors under study has changed since 1989. In the post-cold war period, countries that are less democratic are more likely to export arms, military pacts are less relevant and embargoes play a role.     

和谐警民关系构建过程中的不良因素规避

构建和谐警民关系在当前公安工作中具有全局性意义。在和谐社会建设正成为时代精神精华的背景下，和谐警民关系的构建不仅具有历史逻辑的可能性，而且具有改善社会关系、化解各种矛盾、维护社会公平正义、全面促进社会和谐的根本意义和现实需求。面对队伍建设的新情况、新局面，和谐警民关系的构建应立足现状，分析局面，寻求对策，以利公安工作和队伍建设再上新台阶。