连云港西大堤变形监测的研究

通过对连云港西大堤实施科学的、有效的、长达四年的变形监测，获得了西大堤安全运营状况、施工质量等方面的大量数据，并在现代平差理论和统计检验原理的基础上，运用国内外变形分析的理论和方法，对所获数据进行多种方案的平差计算，利用平差计算结果对西大堤工程变形进行了分析，对其变形趋势进行了可靠预报。     

《园林与中国文化》引文分析及其思考

王毅《园林与中国文化》一书被引率极高,说明文化成为园林研究的热点。中国传统文献学既是中国传统文化的内容,也是其表现形式,对于传统文化的学习不可缺少对文献学的学习。随着研究的深入和拓展,文献的利用范围也随之变换和扩展。     

装备战场损伤模拟中的统计分析模型

以装备战损模拟平台为基础获得装备战损基本数据.用统计学回归分析研究其规律,可建立包括弹药杀伤效果、典型战场环境下装备损伤分析和基于统计数据装备损伤评估的装备战场损伤统计分析模型.并通过模型分析影响弹药杀伤效果的主要因素,建立影响杀伤效果的多元回归方程,进而建立装备损伤的解析模型.再通过分析装备各零部件损伤间的相关性,建立用于装备战损评估的贝叶斯网络.     

非线性油气悬架的阻尼特性研究

以矿车后悬的油气悬架为研究对象,利用统计线性化的方法,按照等效线性阻尼系数相等的原则,计算出了渐增、线性和渐减3种阻尼模型的参数.在稳态随机路面的激励下,利用Matlab/Simulink仿真并比较非线性刚度与3种阻尼模型匹配时的车身加速度均方根值、悬架动行程、车轮动载荷以及减振器的发热功率,得到了不同类型阻尼对上述指标的影响,对阻尼的匹配、优化设计具有参考价值.     

Risks and safety level of composite cylinders

The increasing amount of composite transport systems for hydrogen leads to new and therefore unknown potential hazards for general public. Due to lack of experience, risks of new technologies tend to be rated higher than existing familiar applications. An approach for probabilistic safety assessment of technologies or products requires the definition of minimal acceptable reliability levels. This ensures that the probability of a critical failure with a certain consequence is limited to an acceptable risk. But what is the acceptable risk and which risk results from specific probabilities of occurrence and consequences? This is always a very complex question. The following example is based on a probabilistic approach for safety assessment of composite cylinders developed at the BAM (Federal Institute for Materials Research and Testing).     

传统质量工具在软件质量保证中的应用

软件的质量问题是目前我国软件企业面临的最大问题之一.分析当前导致软件质量无法保证的原因,提出能力成熟度模型(CMM)与传统质量工具集成的思想,建立了以CMM为框架,集合传统质量工具的软件质量保证新模式,并对具体应用提出解决方案.为提高软件效率、保证软件质量和使顾客满意提供支持.     

Combination of Hargreaves method and linear regression as a new method to estimate solar radiation in Perlis, Northern Malaysia

The best way to obtain the solar radiation data of a particular place of interest (POI) is to measure at the specific site continuously and accurately over the long term. However, due to financial, maintenance, calibration requirement of the measuring equipment or institutional limitations, these data are absent, incomplete or inaccessible in most areas of the world. Based on meteorological data from Chuping Station, Perlis which is at Northern Malaysia, there were several missing data of solar radiation for the year 2007 and 2008. This paper presents a new method to estimate the solar radiation which is a combination of Hargreaves method and linear regression. Normally, both regression coefficients, a and b of the linear regression are found based on the measured data, but using the proposed method, both regression coefficients based on the Hargreaves method with the correlated parameter, x is the difference of daily temperature. This paper also presents the basic knowledge of Hargreaves method before the proposed method is implemented. As validation, those solar radiation data that are measured by Chuping Station for the year 2006 and by Electrical Energy and Industrial Electronic System (EEIES) Cluster Station for the month of March–June 2011 and their estimated solar radiation data are compared and analyzed using coefficient of residual mass (CRM), root mean squared error (RMSE), Nash–Sutcliffe equation (NSE) and percentage error (e). The statistical analysis of the average monthly measured solar radiation data for the past 26 years (1979–2006) is compared with the estimated solar radiation data for 3 years (2006–2008). The proposed method result shows that the value of CRM is closer to zero which indicates that the proposed method is perfectly estimated, the values of RMSE are low value, this indicates that the method performs well, the value of NSE is closer to 1 which indicates that the estimated solar radiation match perfectly with the measured data taken for the past 26 years, the value of e is closer to zero which indicates that the proposed method is acceptable and applicable.     

选煤厂药剂损耗的分析与改善

通过使用“质量分布图”这一全面质量管理的重要工具,对选煤厂药剂使用量这一基础生产数据资料进行统计分析并研究;找出药损的波动范围,并与实际生产经验结合,判别生产过程有无异常.对目前药损较高的现状及时查找原因,进行纠正,以达到最佳使用效果.通过近两年的实践并应用,药剂费用显著降低,所以数理统计方法提供的工具-质量分布图是一个有力的工具,是判别生产过程有无异常的重要手段,能确保变异得到有效控制,并促进持续改进.     

基于尺度不变性的无参考图像质量评价

现有的通用型无参考图像质量评价方法大多是利用失真图像及其主观值来训练回归模型预测图像质量指标,然而这种方法需要消耗大量的时间进行训练,并且评价效果依赖于训练图像库中的失真类型,通用性较差,很难应用到实际场合中。为了解决数据库依赖问题,提出一种归一化的基于图像尺度不变性的无参考图像质量评价方法。该方法不依赖外部数据,将图像的统计特性及边缘结构特性作为图像质量评价的有效特征,利用图像多尺度不变性计算多尺度间的整体特征差异,从而预测图像质量。实验结果表明,所提方法对混合失真图像质量评价效果好,运行效率高,与目前现有的无参考图像质量评估方法相比具有较好的综合性能,具有较好的应用价值。     

采样设计数据处理与直方图的自动实现

为在采样设计时,做好矿石不同类型、不同品位区间样品的统计工作,笔者用采样设计数据处理系统实现了若干区间品位统计表、统计直方图的自动生成。本文对此进行了分析和说明。