基于ASP技术的器件管理系统设计与实现

针对实验室中传统器件管理方法的低效率,利用ASP技术,建立基于Microsoft SQL Server 2000数据库平台的Web数据库系统。该系统的建立对于提高实验室器件管理的效率和可靠性,改善资源利用率具有重要的实用价值。     

BUILDING A DATA-MINING GRID FOR MULTIPLE HUMAN BRAIN DATA ANALYSIS

E-science is about global collaboration in key areas of science such as cognitive science and brain science, and the next generation of infrastructure such as the Wisdom Web and Knowledge Grids. As a case study, we investigate human multiperception mechanism by cooperatively using various psychological experiments, physiological measurements, and data mining techniques for developing artificial systems which match human ability in specific aspects. In particular, we observe fMRI (functional magnetic resonance imaging) and EEG (electroencephalogram) brain activations from the viewpoint of peculiarity oriented mining and propose a way of peculiarity oriented mining for knowledge discovery in multiple human brain data. Based on such experience and needs, we concentrate on the architectural aspect of a brain-informatics portal from the perspective of the Wisdom Web and Knowledge Grids. We describe how to build a data-mining grid on the Wisdom Web for multiaspect human brain data analysis. The proposed methodology attempts to change the perspective of cognitive scientists from a single type of experimental data analysis toward a holistic view at a long-term, global field of vision.     

网格的实质及其架构软件的发展

对网格的基本问题和实质进行探讨,对它的架构和软件的最近发展给出综合评述,介绍国际网格研究的若干基本动向。     

中间件的由来、现状及我们的机遇

中间件是软件技术发展的一种潮流,被誉为发展最快的软件品种,本文要领了中间件技术的概念,分类和产生的原因,并对当今常用的中间件产品从性能上作了比较。     

THE DESIGN AND INTERPRETATION OF HUMAN CONTROL EXPERIMENTS

PART I is a general statement of some of the factors which must be taken into account in the design and interpretation of human control experiments. In particular the non-ergodic character of the asymptotic learning state (statistical quasi-equilibrium) demands special precautions and a large amount of data. Attention is drawn to the part played by bias and noise.

PART II is an account of certain experiments with a machine incorporating computer elements so that statistical data may be accumulated rapidly, interalia in the form of mean square deviations. The experiments described relate to the various phases of learning and the regression of mean square deviation on sensitivity in the ‘ asymptotic ’ state.     

多媒体音频设备驱动程序的结构和原理

本文以波形音频输入输出为样本，剖析了Ｗｉｎｄｏｗｓ音频设备驱动程序的结构和原理。Ｗｉｎｄｏｗｓ设备驱动程序为应用提供了可扩展，设备无关，一致的接口。本文给出了数字波形数据Ｉ／Ｏ的处理过程，以及应用程序，驱动程序和音频硬件的层次关系。     

共享竞争择一资源Petri网的形式化设计方法

自动制造系统中有许多共享资源，例如，机器人、数控加工中心、无人导引自动小车等，竞争择一是其共享方式之一。以往，自动制造系统的Ｐｅｔｒｉ网控制系统器设计几乎都是试凑，而且一些性质不能得到满足，如无死锁。这主要是对共享资源的不适当设计造成的。对于多个子系统，为了使之能很好地工作，必须研究一种设计有界、无死锁的Ｐｅｔｒｉ网控制器的方法。本文在以往工作的基础上，提出了有界、无死锁、安全Ｐｅｔｒｉ网控制器…     

从正面侧照片合成三维人脸

实现了一具交互式人脸建模和动画的工具,用户可以从一个人正面和侧面的照片构造了出头部的三维模型,并基于这个模型实现特定表情和简单的动画。详细阐述在系统实现过程中应用到的人脸几何表示,一般人脸变化到特定人脸、弹性网格、肌肉模型、全视角巾图、表情提取等技术。     

LEARNING MOTOR SKILLS BY IMITATION: A BIOLOGICALLY INSPIRED ROBOTIC MODEL

This article presents a biologically inspired model for motor skills imitation. The model is composed of modules whose functinalities are inspired by corresponding brain regions responsible for the control of movement in primates. These modules are high-level abstractions of the spinal cord, the primary and premotor cortexes (M1 and PM), the cerebellum, and the temporal cortex. Each module is modeled at a connectionist level. Neurons in PM respond both to visual observation of movements and to corresponding motor commands produced by the cerebellum. As such, they give an abstract representation of mirror neurons. Learning of new combinations of movements is done in PM and in the cerebellum. Premotor cortexes and cerebellum are modeled by the DRAMA neural architecture which allows learning of times series and of spatio-temporal invariance in multimodal inputs. The model is implemented in a mechanical simulation of two humanoid avatars, the imitator and the imitatee. Three types of sequences learning are presented: (1) learning of repetitive patterns of arm and leg movements; (2) learning of oscillatory movements of shoulders and elbows, using video data of a human demonstration; 3) learning of precise movements of the extremities for grasp and reach.     

SAMPLING QUALITATIVE AND FUZZY VARIABLES AS A TOOL FOR THE GENERAL SYSTEM PROBLEM SOLVER

Abstract

An important phase in the application of the General System Problem Solving framework (GSPS∥ is the choice of the sampling frequency of relevant variables. Optimal sampling frequency is generally a compromise between our endeavour to catch all dynamical changes of a signal without having redundant samples. This problem is not completely solved for crisp metric variables and very little is known about sampling qualitative and fuzzy variables. In this paper, one possible approach based on the data compression is suggested for determining the optimal sampling frequency of ordinal and nominal variables. The submitted approach can be on the specific conditions extended for the fuzzy variables also     

THE HAND-HELD CALCULATOR AS A CRYPTOGRAPHIC MACHINE

The degree of sophistication available in today's programmable personal calculators may be used to provide a practical field cipher capability of significant power. Procedures are presented for key management, key generator cycling alarm, cipher-type selection to match cryptanalytic threat level, and key length options as an answer to key-search attacks. Three basic cipher procedures are presented with special emphasis given to the inherent power of transposition techniques. Four cryptogram examples are included to demonstrate four of the levels of available security offered by the system.     

THE CANONICAL STRUCTURE AS A MINIMUM STRUCTURE

In this paper a structure of a system is defined as a mathematical structure (?; Σ ), where ? is a first-order logic language and Σ is a set of sentences of the given first-order logic. It is shown that a canonical structure determined by Σ which is similar to those used in proving the Gödei's completeness theorem, satisfies a universality in the sense of category theory when homomorphisms are used as morphisms, and a freeness in the sense of universal algebra when Σ-morphisms, which preserve Σ are used. The universality and the freeness give the minimality of the canonical structure.

As an example, a structure of a stationary system is defined as a pair (?e-sta, Σe-sta)-Its canonical structure is actually constructed. In a sense this canonical structure accords with models constructed by Nerode realization.     

一种人手检测系统的设计与实现

详细介绍一种人手检测系统的设计与实现方法。该系统能够实时准确地检测图像中五指并拢朝上,手掌面对镜头这一种姿势的人手。采集和建立了用于人手检测分类器训练的人手样本图库,阐述了肤色模型的应用原理和提取肤色区域的实现方法,给出了基于AdaBoost算法的分类器的原理和实现算法。最后通过实验分析了该系统的检测速度与实现效果。     

移动分布式系统——技术现状和发展

系统地分析了移动分布式系统的技术、研究工作及关键问题的现状,在介绍基本概念和移动网络环境特性的基础上,按照研究层次、应用类型和关键问题等不同角度,对研究工作进行了深入的分析,并详细讨论了移动分布式系统的研究现状。随后,列举了一些有代表性的系统和相应技术特点。文章最后指出了移动分布式系统的研究发展方向。     

基于视频序列的人体运动分析系统的研究与实现

基于视频的人体运动分析是通过视频序列对人体的运动进行检测、分割和跟踪，获得人体或者某一部位的运动信息，生成人体的运动轨迹以及各运动学和动力学参数，达到分析人体三维运动的目的。人体运动属于连接型非刚体运动的范畴，具有高度的非线性特点，利用视频进行人体运动分析，有着极大的研究价值和现实应用前景。本文以单目视频中人体的跳远运动为研究对象．研究与实现了一个基于视频序列的人体运动分析系统。