人脸检测方法综述

人脸检测问题的提出是为了在自动人脸识别系统中的定位,近年来,由于其在安全控制、人机界面、视觉监测、基于内容的检索等领域的应用价值,开始作为一个独立的课题受到研究者的普遍重视。该文从人脸检测的模式、人脸特征的提取、人脸特征的综合、评估标准等角度,系统阐述了人脸检测系统,并将人脸检测方法分为：基于几何特征的方法,基于肤色模型的方法和基于统计理论的方法,并对各个方法的优缺点进行了比较,最后,对人脸检测今后的发展方向进行了探讨。     

谈专业竞赛对教学实践改革的促进作用

本文结合"数据结构"实践教学,探讨了高等教育大众化教育背景下计算机专业人才培养模式。通过介绍近年来我校参加的计算机专业竞赛,说明改革实践教学模式的必要性。     

让学生在快乐中学习——谈案例教学法在“单片机原理与应用”教学中的应用

学生时代是需要欢乐的时代,让学生在快乐融洽的氛围中学习,可以最大程度激发学生的学习兴趣和主动性。本文通过"单片机原理与应用"课程案例教学研究,探讨在"真实"的案例、积极的评价、"成功"的体验中,让学生始终保持学习激情,事半功倍完成教学任务。     

新建地方本科院校计算机专业人才培养模式研究

新建地方本科院校应适应经济建设和社会发展对人才培养的要求。针对计算机专业人才培养过程中存在的问题和新建地方本科院校自身的特点,阐述了产学研合作是培养计算机专业应用型人才的重要途径,分析了新建地方本科院校产学研合作中存在的问题,探讨了新建地方本科院校计算机专业开展产学研合作教育的有效方式。     

以学习理论探讨基于全球标准数字学习与测评的系统架构及有效学习模式的实证分析

本文通过研究学习理论探讨了ICT信息与网络通讯核心能力常用应用软件适性学习系统的架构。首先就IC3学习系统与精熟学习理论、适性学习理论、鹰架学习理论、示例学习理论及双代码学习理论基础进行了说明,其次利用学生学习数据进行IC3 M-B(Mentor-Benchmark)学习模式的实证性分析,最后就IC3常用应用软件适性学习系统对目前ICT信息与网络通讯技术能力的教学模式、策略以及未来的努力方向提出建议。     

Performance index based learning controls for the partial non-regular systems using lifting technique

Deficiencies of the performance-based iterative learning control （ILC） for the non-regular systems are investigated in detail, then a faster control input updating and lifting technique is introduced in the design of performance index based ILCs for the partial non-regular systems. Two ldnds of optimal ILCs based on different performance indices are considered. Finally, simulation examples are given to illustrate the feasibility of the proposed learning controls.     

Mediating Power: Distance Learning Interfaces, Classroom Epistemology, and the Gaze

Distance learning's interfaces—from corresponding through the postal service to the televised talking head—have traditionally been designed from the top down, supporting banking models of learning or, in writing instruction, current-traditional rhetoric pedagogies. Due to temporal and spatial constraints, these interface designs often support (or encourage) one-way communication from the instructor to the student. Students mostly interact with the instructor by asking questions or submitting work, and they tend to have little correspondence with other peers. These methods clearly privilege the instructor's knowledge and evaluation. Furthermore, these interface designs empower the instructor to gaze upon the students and assess them—often not as a corporeal body but as a corpus of texts. Thus, each interface adopted for distance learning sets up a power dynamic in which the capability to share the roles of creating knowledge is juxtaposed with the instructor's capability to normalize the students and reify their own authority through their gaze. In this article we examine the traditional classroom interface through the correspondence course interface, the simulated classroom interface, and the synchronous video interface to raise questions about the infrastructures of distance learning and their implications for student learning.     

Iterative control approach to high-speed force-distance curve measurement using AFM: time-dependent response of PDMS example

Force-distance curve measurements using atomic force microscope (AFM) has been widely used in a broad range of areas. However, currently force-curve measurements are hampered the its low speed of AFM. In this article, a novel inversion-based iterative control technique is proposed to dramatically increase the speed of force-curve measurements. Experimental results are presented to show that by using the proposed control technique, the speed of force-curve measurements can be increased by over 80 times--with no loss of spatial resolution--on a commercial AFM platform and with a standard cantilever. High-speed force curve measurements using this control technique are utilized to quantitatively study the time-dependent elastic modulus of poly(dimethylsiloxane) (PDMS). The force-curves employ a broad spectrum of push-in (load) rates, spanning two-order differences. The elastic modulus measured at low-speed compares well with the value obtained from dynamic mechanical analysis (DMA) test, and the value of the elastic modulus increases as the push-in rate increases, signifying that a faster external deformation rate transitions the viscoelastic response of PDMS from that of a rubbery material toward a glassy one.     

Optimal experimental design and some related control problems

This paper traces the strong relations between experimental design and control, such as the use of optimal inputs to obtain precise parameter estimation in dynamical systems and the introduction of suitably designed perturbations in adaptive control. The mathematical background of optimal experimental design is briefly presented, and the role of experimental design in the asymptotic properties of estimators is emphasized. Although most of the paper concerns parametric models, some results are also presented for statistical learning and prediction with nonparametric models.     

学习型红外遥控器的设计与实现

采用一体化红外接收器HS0038B设计并实现了学习型红外遥控器,对遥控器的编码信号进行采样,记录编码波形,对高低电平进行脉宽计数,转换成脉宽编码,从而实现“学习”功能,发送时根据存储的脉宽编码恢复出编码信号的脉冲波形。该方案与具体遥控器的编码协议无关,提高了通用性。