Does civil war hamper financial development?

We examine how armed conflict effects financial development in a cross-country setting using dynamic panel data analysis in a panel of 66 developing countries for the period 1985–2010. Financial development is measured by M2 as a share of GDP, and credit allocated to private sector by banks as a share of GDP. Our findings suggest that armed conflict has a significant adverse effect on financial development. Simultaneously, the quality of governance is always highly significant and conducive to the financial development. The quality of governance is more salient in determining financial development compared to low- and medium-intensity armed conflict; however, the quality of governance cannot entirely offset the adverse impact of high-intensity armed conflict on financial development.     

Variables inspection for SPC‐quarantined production

When a control chart signals an out‐of‐control condition for a production process, it may be desirable to “quarantine” all units produced since the last in‐control SPC sample. This paper presents an efficient procedure for variables inspection of such “SPC quarantined” product. A Bayesian sequential inspection procedure is developed which determines whether the out of control production is of acceptable quality. By inspecting the units in reverse of the order in which they were produced, the procedure is also capable of detecting the point at which the process went out of control, thus eliminating the need to inspect units produced prior to the onset of the out of control condition. Numerical examples are presented, and the performance characteristics of the procedure are demonstrated using Monte Carlo simulation. © 2001 John Wiley & Sons, Inc. Naval Research Logistics 48: 159–171, 2001     

4×4轮式两栖车可升降独立悬架方案的仿真研究

对4×4轮式两栖车的可升降独立悬架进行了方案选择与具体设计;前悬架采用双横臂式扭杆弹簧带摩擦减振器的可提升悬架,后悬架采用肘内传动式单纵臂导向机构的可提升悬架;并在此基础上用ADAMS软件建立了整车三维实体参数化模型,在该模型下对选择的方案进行了动态仿真研究.最终确定出该悬架方案形式是一种可行方案.在方案验证时,采用了虚拟样机设计技术和动态仿真研究手段,利用轮式整车模型,在ADAMS/View环境下,以操纵稳定性分析为重点,进行了车轮提升、通过性、稳态转向特性、瞬态横摆响应以及回正能力等的仿真分析.     

A competitive genetic algorithm for resource-constrained project scheduling

In this paper we consider the resource-constrained project scheduling problem (RCPSP) with makespan minimization as objective. We propose a new genetic algorithm approach to solve this problem. Subsequently, we compare it to two genetic algorithm concepts from the literature. While our approach makes use of a permutation based genetic encoding that contains problem-specific knowledge, the other two procedures employ a priority value based and a priority rule based representation, respectively. Then we present the results of our thorough computational study for which standard sets of project instances have been used. The outcome reveals that our procedure is the most promising genetic algorithm to solve the RCPSP. Finally, we show that our genetic algorithm yields better results than several heuristic procedures presented in the literature. © 1998 John Wiley & Sons, Inc. Naval Research Logistics 45: 733–750, 1998     

军校学员身体素质现状分析

对指挥院校和技术院校及其不同年级、不同层次学员的主要身体素质进行了测试和分析 ,并将军校学员与部队战士的身体素质进行了比较。     

论"综合国防素质"的内涵

党的十九大报告提出要“加强全民国防教育”,“综合国防素质”的提出明确了国防教育的目标,具有重要的理论价值和现实意义。在“综合国防素质”研究综述的基础上,从国防知识、国防意识、国防理念、国防技能、国防创新能力、国防行为六方面全面把握“综合国防素质”的基本内涵,明晰“综合国防素质”的概念,推进综合国防素质问题的深入研究。     

网格质量反馈的弹性体动网格改进

高鲁棒性的动网格变形方法是求解包含运动边界的非定常流场问题的关键技术。基于经典的弹性体动网格方法,引入两种设计合理、评价效果较好的网格质量参数——Patrick参数和Baker参数,提出了一种基于网格质量反馈的改进弹性体动网格方法。结合二维NACA0012翼型、三维ONERA M6机翼大角度俯仰运动,对比研究改进方法与经典方法的变形能力,改进方法能够保持较好的网格质量,尤其在最大变形时,可以有效改善较差网格单元,具有更高的鲁棒性。计算了NACA0012翼型、ONERA M6机翼的俯仰振荡绕流,并与实验结果及文献进行对比,结果表明,基于网格质量反馈的改进弹性体法能够显著提高变形网格的鲁棒性,可为非定常流场问题的求解提供有力支撑。     

基于网格质量反馈的弹性体动网格改进研究

高鲁棒性的动网格变形方法是求解包含运动边界的非定常流场问题的关键技术。基于经典的弹性体动网格方法,引入两种设计合理、评价效果较好的网格质量参数——Patrick网格质量参数和Baker网格质量参数,从网格质量反馈优化的角度对经典方法作出改进,提出了一种基于网格质量反馈的改进弹性体动网格方法。结合NACA0012翼型的大角度俯仰运动,对比研究改进方法与经典方法的变形能力,整个过程中改进方法均保持更好的平均/最小网格质量,尤其在大俯仰角90deg时,经典方法的平均、最小网格质量降幅均是改进方法的4倍之多,且机翼尾缘处的网格扭曲严重,而改进方法仍与初始网格保持了较好的一致性,具有更高的鲁棒性。作为例证,分别计算了二维NACA0012翼型、三维ONERA M6机翼的俯仰振荡绕流,并与实验结果及流场规律进行对比,结果表明：基于网格质量反馈的改进弹性体法能够显著提高变形网格的鲁棒性,在大幅度的变形下保持较高的网格质量,对多维流场的求解均可取得精确结果,可为非定常流场问题的求解提供有力支撑。     

武器装备可用性设计对寿命周期费用的影响及控制

可用性设计是装备综合保障分析的重要内容.合适的可用度指标不但要满足装备效能要求,还应满足费用约束条件.为了设计并选择出费效比最高的保障方案,研究了可用性设计对装备寿命周期费用的影响,提出了运用可用度门限值来控制寿命周期费用的方法,并举例说明具体的应用.最后,就保障性设计中的费用权衡问题提出了几点建议.     

基于马尔可夫分析的人才拥有量研究

基于马尔可夫分析理论,给出了人才拥有量预测的马尔可夫模型,并且讨论了模型中转移概率的确定及模型的预测质量等问题.