冗余度机械手逆运动学解中具有双重功能的评价函数

根据梯度投影法得出了冗余度机械手逆运动学的表达式，构造了一个使机械手能同时完成两个任务─—克服奇异性和避障具有双重功能的评价函数。利用这一评价函数对平面三自由度冗余度机械手进行了仿真分析，并与单一功能评价函数的仿真结果进行了比较。     

矿产资源价值及采矿权价值评估理论探讨

矿产资源是人类劳动与自然形成物的结合体，对矿产资源价值问题进行分析探讨，指出矿产资源既具有价值也具有价值。比较分析劳动价值论与收益价值论，指出应用收益价值论评估采矿权价值更适合实际。     

一种对ICT复杂图像进行二值化处理的方法

比较、评价了各种经典的图像二值化方法对ICT图像二值化处理的效果。综合分析及实践发现，实验法、大津法不适用于对ICT图像进行二值化分割；而迭代法、边缘检测阈值法、加权边缘检测阈值法对ICT图像二值化分割效果不好。直方图法处理的效果稍好，但它仍将非常接近背景灰度的目标物部分错误划分为背景。提出“背景法”、直方图法与背景法结合的改进方法，可对ICT断层图像进行较理想的二值化分割。     

基于计算机视觉检测技术自动计数系统的研究与应用

为了对生产线上螺纹钢自动计数，提出一种基于计算机视觉的自动检测系统。该系统利用CCD图像传感器获取实时图像，提取图像中的边界、灰度均值及灰度梯度分布3种信息进行数据融合，并结合多次阈值分割联合判断，达到自动计数的目的。实际应用结果表明该方法具有很高的精度。     

关于石油天然气储量资产化的思考

油气储量资产化是石油工业深化改革，建立现代企业制度的客观要求、也是提高石油企业勘探效益，降低生产成本，扭亏增盈的重要途径．作为石油企业建立“油公司”体制的一项重要基础工作，我国油气储量资产化这一工程刚刚启动，许多问题值得深入研究和探讨．本文就储量资产化及其价值评估的有关经济理论问题进行了探讨，分析了油气储量资产的特性，提出了“油田矿租”的新论点。     

河流健康的内涵

河流健康不是严格意义上的科学概念,而是一种河流管理的评估工具.其作用是建立相对基准点和评估准则体系,对于在自然力与人类活动双重作用下的河流生态系统状况进行动态监测与评估,以研究其演进趋势并通过管理促其向良性方向发展.河流健康评估准则应体现开发与保护的平衡,应体现流域各个利益相关者的利益协调.河流污染是对我国河流健康的最大威胁,治污是我国现阶段河流生态环境建设的首要任务.     

半奇异值算法的推导及其应用

奇异值分解是将一矩阵分解为一个对角矩阵和两个正交矩阵,奇异值分解有着非常好的性质。但在其部分应用中,如秩亏损的最小二乘问题,线性方程组的最小范数解中,并没有充分利用它的所有性质。提出了半奇异值分解A=USR,其中U为正交矩阵,S为对角矩阵,R为上三角矩阵。在经过文中所述的后期数学处理后,它能够非常好地利用在各个方面,比如最小二乘问题和线性方程组中。这种分解不仅保留了奇异值分解后所应有的性质,更大大地降低了计算复杂度。因为该算法有求极值的能力,所以它将在应用领域中发挥更大的作用。     

基于文化生态位的城市近郊区历史古镇保护规划研究

在城市经济转型升级以及新型城 镇化快速发展的多重影响下，城市近郊区历 史古镇在城市发展转型过程中越来越受到 重视。论文以重庆近郊区历史古镇金刚碑为 研究对象，引入文化生态位的概念，对近郊 区古镇历史文化生态特征、文化生态网络构 建等方面进行调查和研究，分析其生长演 变规律和内在发展联系，进而探寻文化生 态位视角下城市近郊区历史古镇保护更新 利用的适应性方法。     

Consumer Value perceptions of food products from emerging processing technologies: A cross-cultural exploration

Through a qualitative research approach, the present paper aims to explore the range and type of ‘values’ and ‘costs’ in formulating overall Consumer Value (CV) perceptions, in association with two emerging processing technologies that at the outset are neither distinctly positive nor negative in the eyes of consumers, in two culturally variant contexts, namely a Western society where technology is often met with skepticism (i.e., the UK); and a non-Western society where technology plays a reassuring role regarding concerns about food safety and quality (i.e., China). Results reveal that the most important value and cost dimensions that define CV perceptions are reasoned and utility-related, in particular ‘functional (i.e., economic) value’ and ‘performance (i.e., taste-related) cost’. Moreover, additional value and cost types of affective nature play an important role, such as ‘emotional value’, ‘(dis)trust’ and ‘(un)familiarity’. Furthermore, a number of differences emerge when CV perceptions are related to participants’ differences in attitude to technological progress (i.e., pro- or counter-technology individuals), lending support to the assumption that consumers with different general attitudes towards technological progress would differ in the number and type of value–cost dimensions that define their CV trade-offs. Finally, a between-countries comparison revealed that counter-technology consumers in both cultural contexts share more value and cost perceptions than their pro-technology counterparts, who ‘allow’ more room for cultural discrepancies to impact on their CV perceptions. Overall, findings support the view that CV perceptions in the context of food produced by means of emerging processing technologies can be successfully analyzed using a multidimensional conceptualization, where CV is seen as the outcome of a trade-off among a number of ‘competing’ value and cost dimensions.     

Enhancing Value Engineering Process by Incorporating Inventive Problem-Solving Techniques

The creativity phase is critical to the success of a value engineering exercise, in which the brainstorming technique is deployed to generate ideas. One shortcoming of the brainstorming technique is its lack of direction in problem solving, and consequently the efficiency is low in generating innovative and useful ideas. To overcome this shortcoming, this paper has explored the possibility of incorporating the theory of inventive problem solving (TRIZ) into the workshop session of the value engineering exercise by initiating three new procedures in this session: (1) an initial design procedure to examine the functions of a proposed project; (2) a function trimming procedure to fully utilize existing resources and ensure low life-cycle cost and sustainability of the proposed project; and (3) an interaction analysis procedure to assess the proposed project in a broad perspective with social, economic, and environmental awareness. A case study has indicated the workability of the modified workshop procedures and the usefulness of TRIZ tools and techniques in efficiently and effectively creating innovative ideas.