基于相似孤立系数的孤立点检测算法

基于聚类的孤立点检测算法得到的结果比较粗糙,不够准确。针对该问题,提出一种基于相似孤立系数的孤立点检测算法。定义相似距离以及相似孤立点系数,给出基于相似距离的剪枝策略,根据该策略缩小可疑孤立点候选集,并降低孤立点检测算法的计算复杂度。通过选用公共数据集Iris、Labor和Segment—test进行实验验证,结果表明,该算法在发现孤立点、缩小候选集等方面相比经典孤立点检测算法更有效。     

某待建滨海核电厂厂址年均大气扩散因子计算模式与参数的实验研究

本文在某待建滨海核电厂厂趣现场野外实验基础上提出了计算该核电厂年均大气扩散因子的计算模型。此模型既考虑了向岸流与离岸流的差别，又考虑了混合层与热内边界层，混合释放与扩散参数随陆距变化等因素的综合影响。模型中所需要的各类参数，包括在１９９５，１９９６年间在该厂趣野外大气试验中获取的百米气象铁塔４个不同高度上的风，温逐时三维联合频率；湍流测量结合风洞实验获取的离岸流与向岸流的扩散参数。     

Regression analysis of amino acid substitutions and factor IX activity in hemophilia B

Hemophilia B is caused by a deficit or decreased activity of factor IX. Mutation in factor IX is made up of a majority of amino acid substitutions. We examined the relation between the activation level of factor IX and the category of amino acid substitution with regression analysis. As parameters, we used four physical-chemical parameters of amino acids and Dayhoff’s PAM matrix. In addition, the average of the activation level with the same amino acid substitution was used for the analysis. We analyzed the relationship between variations containing cysteine or factor IX’s seven regions and activity levels. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Older people and mobile phones: A multi-method investigation

This paper investigates issues related to the use of mobile phones by people aged 60 years and over and characteristics of an ageing-friendly mobile phone. This study combines qualitative and quantitative analysis methods of Delphi interviews, focus group discussions, and online survey. The expert interviews and the focus group discussions covered usage patterns, problems, benefits, and desired and unwanted features. The issues raised in the discussions were translated into an online survey of 100 people. This study revealed that older people are passive users of mobile phones, that they experience fear of consequences of using unfamiliar technology, and that most preferred design features are aids for declining functional abilities. Gender differences in preferred design features were observed, with women focusing on haptic aids and men on perceptual aids.     

块体理论及其在施工地质预报中的应用

在大型工程的开挖过程中,块体是经常碰到的一种不良地质现象,若不及时采取加固措施,可能会造成比较严重的损失,如何快速合理的对其进行稳定性评价及计算已成为施工地质工作的一项重要内容.本文从理论出发,对块体理论进行阐述,并结合生产实际,以某边坡块体为例,对其加以稳定性计算.     

Entwicklung eines Anwenderprogramms zur Optimierung der Bediensicherheit einer verfahrenstechnischen Anlage

Obwohl die Hauptursachen von Unfällen in der verfahrenstechnischen Industrie im Bereich des Human Factors (menschlicher Faktor) liegen, sind systematische Untersuchungen dieser Problematik nur sehr selten anzutreffen. Dies lässt sich darauf zurückführen, dass zum einen die Hintergründe menschlicher Fehler nur wenig bekannt sind und zum anderen die entsprechenden Analysemethoden fehlen. Im Rahmen dieser Arbeit wird ein neu entwickeltes Softwaretool (Process Industry Tool for Operator Action Analysis – PITOPA) vorgestellt. Mit Hilfe dieses Programms können Fehler in den Bedienhandlungen und deren Konsequenzen systematisch analysiert werden. Darüber hinaus lässt sich der Einfluss der verschiedenen Faktoren, die den Bediener bei der Durchführung einer Aufgabe beeinflussen, identifizieren sowie quantifizieren. Somit können Human Factor bedingte Sicherheitslücken erkannt und der Prozess sicherer und effizienter gestaltet werden.     

关于中子的品质因数问题

品质因数Q是辐射防护规定中的一个重要参数。本文简述了目前国际上采用的Q值的由来,存在的争论,以及目前的状况。本文提出,目前在制定辐射防护规定时,可继续采用现行国际上通用的Q值,但在进行涉及到中子防护的最优化分析时,最好是能把ICRP 1985年关于提高中子Q值的建议考虑在内。     

New trends in rock slope stability analyses

 The paper discusses alternative approaches to stability analyses including the traditional deterministic principle, the so-called partial factor principle and the probabilistic approach which assesses the probability of failure rather than the factor of safety. To illustrate the different principles and approaches, stability analyses of road cuts near Trondheim, central Norway, are used as examples. It is concluded that although the traditional deterministic approach has the advantage of being well established and easy to understand, to conform with new standards and guidelines it is likely to be replaced by the partial factor principle. To obtain the best possible basis for evaluation it is useful to include a probabilistic analysis. Received: 5 August 1999 · 28 August 1999     

Multiple timescale analysis and factor analysis of energy ecological footprint growth in China 1953–2006

Scientific analysis of energy consumption and its influencing factors is of great importance for energy strategy and policy planning. The energy consumption in China 1953–2006 is estimated by applying the energy ecological footprint (EEF) method, and the fluctuation periods of annual China's per capita EEF (EEF_cpc) growth rate are analyzed with the empirical mode decomposition (EMD) method in this paper. EEF intensity is analyzed to depict energy efficiency in China. The main timescales of the 37 factors that affect the annual growth rate of EEF_cpc are also discussed based on EMD and factor analysis methods. Results show three obvious undulation cycles of the annual growth rate of EEF_cpc, i.e., 4.6, 14.4 and 34.2 years over the last 53 years. The analysis findings from the common synthesized factors of IMF1, IMF2 and IMF3 timescales of the 37 factors suggest that China's energy policy-makers should attach more importance to stabilizing economic growth, optimizing industrial structure, regulating domestic petroleum exploitation and improving transportation efficiency.     

某待建滨海核电厂址事故冲洗因子计算模式探讨

本文参照当前国内外常用导则给出的估算事故扩散因子的模式，提出了一套估算事故冲洗因子的确定论模式与概率论模式，并根据我国东部某待建滨海核电厂址的实测气象资料，分别估算了事故后各时段（０～８ｈ、８～２４ｈ、１～４ｄ和４～３０ｄ）的冲洗因子（确定论模式）和事故概率冲洗因子以及相应的沉积外照射剂量。结果表明，对事故后０～８ｈ时段而言，由确定论模式给出的冲洗沉积外照射有效剂量分别为相应的干沉积外照射有效剂量