The Nature of Struck-by Accidents

Construction accidents are broadly categorized into five basic groups, namely falls (from elevation), shock (electrical), caught in/between, struck-by, and other. “Struck-by” accidents accounted for 22% of all construction-related fatalities recorded by the Occupational Safety and Health Administration between 1985 and 1989. Recent (1997 to 2000) data show that the percentage of struck-by accidents constituted 24.6% of the fatalities and serious construction worker injuries. Struck-by accidents primarily involve workers struck by equipment, private vehicles, falling materials, vertically hoisted materials, horizontally transported materials, and trench cave ins. Determining possible causation factors of these accident types is often difficult, due to the broad categories utilized in the accident coding system. This study resulted in gaining insights about the root causes of the struck-by injuries. By finding the root causes, effective methods for accident prevention can be developed.     

Peer-to-Peer数据共享研究

最近一段时间，由于许多Peer-to-Peer(简写为P2P)系统例如Napster、Freenet和Gnutella等的成功应用，P2P数据共享问题成为国际上应用领域和研究领域内的热点。在数据管理领域内的国际会议和杂志上也可以纷纷见到这方面的文章，分别从体系结构、数据表示、数据检索、资源管理和安全与法律等方面着手研究在P2P的环境下进行数据共享的问题。由于Peer-to-Beer自身开放性和松散性的特点，导致了P2P系统在很多方面都需要进行进一步的深入研究。在本文中，我们将对P2P数据管理领域内目前的研究现状作一个综述。     

基于动态规划的红外弱小运动目标的实时检测方法研究

文章针对低信噪比下红外弱小运动目标的特点,提出了一种正向动态规划算法。分析了算法的检测性能,并对算法实现中的一些关键问题进行了讨论。实验表明,该算法适应性强,能有效地完成对低信噪比下弱小运动目标的实时检测、识别与跟踪。     

多层前馈神经网络在电力系统谐波测量中的应用

介绍了一种基于多层前馈神经网络的电力系统谐波测量方法，给出了一种初相角的计算方法。在初相角已知的情况下，给出了测量电力系统谐波幅值的多层前馈神经网络的结构及算法，并给出了仿真分析结果。     

基于Cardinal样条插值和三角面片的叶片静态建模

提出了采用三角面片和Cardinal样条插值的方法对植物叶片静态建模的一种方法,该方法的优点是使用的型质点少,而生成的图形具有较强的真实感,具有实用价值。并给出了基于玉米叶片的建模结果。     

基于XML交换格式的农业信息术语库系统构建

本针对术语标准化在信息标准化中的作用以及术语数据库在我国的发展情况，阐述了基于XML的农业信息术语库的设计与实现方法，提出了基于XML的术语交换格式，同时论述了术语标准化及农业信息术语库系统今后的发展方向。     

纳米材料在生物医学领域的应用与发展

本文评述了纳米材料在生物医学领域的最新应用及研究状况,介绍了纳米材料或纳米粒子晶体所具有的特殊性能,以及纳米材料在国内外的发展情况,并对其前景进行了展望.     

非阿基米德Menger概率度量空间中Altman型映象公共不动点定理及其在动态规划中的应用

在非阿基米德Menger概率空间中, 利用映象对相容条件证明了一类新的Altman型映象的公共不动点定理,从而改进和推广了一些已知结果。作为应用本文还讨论了起源于动态规划的一类泛函方程组解的存在与唯一性。     

模糊度量空间中公共不动点定理及其在动态规划中的应用

在模糊度量空间建立一类新的涉及4个映象的Altman型映象的公共不动点定理, 所得结果改进和推广了一些已知结果。作为应用,本文还讨论了起源于动态规划的一类泛函方程组解的存在与唯一性。     

Efficient video copy detection using multi-modality and dynamic path search

Efficient and robust video copy detection is an important topic for many applications, such as commercial monitoring and social media retrieval. In this paper, with the aim of handling large-scale video data, we propose an efficient and robust video copy detection method jointly utilizing the characteristics of temporal continuity and multi-modality of video. The video is converted to a continuous sequence of states, and both the visual and auditory features are extracted for temporal frames. To facilitate tolerance of the length variations caused during video re-targeting, an efficient dynamic path search method is proposed to detect the target video clips, and highly compact audio fingerprint and visual ordinal features are jointly utilized in a flexible frame. The proposed scheme not only achieves high computational efficiency but also guarantees effectiveness in real applications. Comparison experiments were conducted using video commercials and real television programs from four channels as well as a benchmark video copy detection dataset, and the results demonstrate both the high efficiency and high robustness of the proposed method.