Qualitative Research in the Service of Understanding Learners and Users of Statistics

This paper seeks to add to a scholarly dialogue regarding the role and value of qualitative techniques in research on learning and using statistics. The paper briefly outlines some of the core assumptions of qualitative research methods, and presents four examples to illustrate selected qualitative methods that are used by educational researchers and service organizations. The discussion emphasizes the need to integrate quantitative and qualitative approaches in research on learners and users of statistics, and suggests that such integration may be needed to study emerging web-based communities of learners and users of statistics.     

一种简单快速的GPS信号捕获方法

结合一般的GPS信号捕获算法,提出了一种更为简单快速的GPS信号捕获方法。此方法在1023个码片时间约1ms,可以完成一颗卫星在一个多普勒频移下的全码捕获检测。 FPGA仿真表明,与传统的捕获方法相比,所提方法减少了资源消耗与时间消耗,同时保证了 能在一个C/A码周期内获取一个多普勒频移下的C/A码相位,捕获更简单快速。     

基于BLM的地产项目信息协同系统研究

传统地产建设项目中,生命周期不同阶段各参与方管理的信息相互隔断,项目各阶段的信息系统建立在不同的工作平台和项目语言上,为各阶段自身的管理目标服务,没有真正从全寿命期的角度进行信息管理。本文通过系统论、信息论、建设工程管理的有关理论和方法的应用,利用PIP创建基于BLM的地产项目信息协同系统(BLMICS),阐述了BLMICS与传统项目管理信息系统(PMIS)的区别;构造BLMICS的概念模型及功能模型,并对各功能模块进行分析;提出了BLMICS的体系结构;分别对BLMICS中项目信息、项目实施过程以及各项目参与方进行集成,构造BLMICS的综合集成模型。通过BLMICS系统的研究,致力于打破地产项目管理中各主体、各专业、各阶段间的信息壁垒。     

涂层刀具摩擦磨损研究

涂层刀具已成为现代刀具的重要标志,涂层刀具可以提高加工效率、提高加工精度、延长刀具使用寿命、降低加工成本,将是今后数控加工领域中最重要的刀具品种。这里讨论了国内外涂层刀具的种类及切削应用情况,并对涂层刀具的摩擦磨损,发展及应用状况进行了综合评述。     

Strategic Responses to Advances in Seismic Technology in the Petroleum Industry

The world petroleum industry has been revolutionized by a change in exploration technology from two‐dimensional (2D) to three‐dimensional (3D) seismic mapping. One of the main effects of the newer technology has been to decrease the cost of finding oil, particularly in offshore fields. We examine the impact of the new technology on the exploration activities of the major international petroleum companies and find that they have aggressively increased petroleum exploration expenditures. As a result, we suggest that the companies have achieved a prisoner's dilemma outcome, where they are collectively worse off in terms of profits, providing a possible explanation for the recent wave of large‐scale mergers in the industry.     

西藏环境保护新形势下的生态经济发展模式初探

生态经济作为一种全新的经济发展模式,是全球资源濒临枯竭,生态环境趋于恶化的现实下人类必须面临的经济社会发展选择。本文通过描述目前西藏环保工作取得的成效,论述资源产业在当地的发展态势,进而论证西藏选择可以提高资源利用效率和经济发展水平,最终促进区域经济协调发展的生态经济模式的必然性。     

我国体制变革中非银行金融机构发展分析

市场经济国家的发展历程表明,随着经济的发展,金融资产的规模会不断扩大,体现金融上层结构与经济基础结构之间关系的金融相关率会不断提高;银行在金融机构资产总额中的比例会趋于下降,同时,非银行金融机构(除中央银行和商业银行之外的一切金融机构)的比重则显著提高.本文分析了市场经济国家与我国在金融深化过程中金融结构演变的特征,发现我国非银行金融机构总量不足,内部结构不合理,严重制约了金融体系效率提高和实体经济的健康发展.对此,作者提出了发展我国非银行金融机构的基本定位和具体对策,并对非银行金融机构的发展前景进行了展望.     

Moral Choice and the Declining Influence of Traditional Value Orientations Within the Financial Sector of a Rapidly Developing Region of the People’s Republic of China

This paper describes the results of a field experiment involving 400 employees from ten financial institutions operating within the Shenzhen Special Economic Zone of the People<img src="/content/r7r88614l3051803/xxlarge8217.gif" alt="rsquo" align="BASELINE" BORDER="0">s Republic of China. It was found that, when faced with an agency-based problem, employees indicated they would be less inclined to advise management of the existence of unethical work practices. Younger employees without supervisory experience displayed significant risk aversion. Traditional Chinese values associated with Confucian work dynamism, were shown to be poor predictors of moral choice response. A parsimonious regression model was developed that provides evidence that the universal trait Masculinity/Femininity (Human-heartedness) acted to offset the negative influence of the agency problem. On the other hand, an operative<img src="/content/r7r88614l3051803/xxlarge8217.gif" alt="rsquo" align="BASELINE" BORDER="0">s level of education attainment exerted a negative influence on moral response scores.     

遗产廊道与大运河整体保护的理论框架

遗产廊道作为文化遗产保护领域的区域化趋势和绿道思想结合的产物,不仅强调了遗产保护的文化意义,而且强调了其生态价值和经济性.我国有着丰富的线形文化景观遗产,但在文化遗产保护体系中还缺少遗产廊道这个层次上的架构,这一现状已经严重影响了类似于重要遗产如大运河的保护.在我国建设遗产廊道既是保护众多的线形文化景观遗产的需要,也是在快速城市化背景下建设高效和前瞻性的生态基础设施的需要,同时更是进一步开展文化旅游的需要.     

基于压缩感知的红外遥感图像重构算法分析

随着航天遥感技术的飞速发展，遥感图像采集数据耗时长、图像数据量大等问题的出现对采样设备和存储设备提出了更高的性能要求。为了解决以上问题，在气象卫星的红外遥感图像的处理中采用了压缩感知理论。通过Matlab建模和仿真，分析了正交匹配追踪算法、梯度投影算法、子空间追踪算法、平滑l0范数算法的性能，并对大量红外图像以不同的采样率进行采样压缩，然后使用多种重构算法重构图像。对比试验显示，几种算法都能以较低的采样率得到完整的红外图像，但平滑l0范数算法在重构精度和运行时间方面都优于其余几种算法，证明了压缩感知在红外遥感图像的处理中具有较大的实用价值。