Illumination robust single sample face recognition based on ESRC

Multimedia Tools and Applications - The extended sparse representation classifier (ESRC) is one of the state-of-the-art solutions for single sample face recognition, but it performs...     

基于需求驱动的数字化校园数据架构研究与设计

近年来,在数字化校园建设中,以数据服务为核心,为不同角色提供人性化信息服务,以及为学校发展提供决策支持的需求应运而生.而单一的统一数据库在应用系统和业务规模扩大时其应用查询效率较低,为此设计出一种新的数字化校园数据架构,将数据交换库与共享数据库分离,使数据存放更为有效,从而提高查询效率.从理论上和技术上对新的数据架构进行了可行性分析.新的数据架构能够较好地满足数字化校园建设中的新需求.     

Recursive projection twin support vector machine via within-class variance minimization

In this paper, a novel binary classifier coined projection twin support vector machine (PTSVM) is proposed. The idea is to seek two projection directions, one for each class, such that the projected samples of one class are well separated from those of the other class in its respective subspace. In order to further boost performance, a recursive algorithm for PTSVM is proposed to generate more than one projection axis for each class. To overcome the singularity problem, principal component analysis (PCA) is utilized to transform the data in the original space into a low-dimensional subspace wherein the optimization problem of PTSVM is convex and can be solved efficiently. The experimental results on several UCI benchmark data sets and USPS digit database show the feasibility and effectiveness of the proposed method.     

基于短信息的远程监控报警系统

本文提出了一种基于GSM短信息的远程液位监控报警系统。该系统以GSM网络为平台,利用短信息实现对远端设备的控制。本文给出了系统硬件结构和软件框图。测试结果表明,该系统工作稳定可靠,费用低廉,能真正实现远程液位监控和报警。     

动画场景教学初探

动画场景教学在国内开展时间较短,各种教学理论、方法还在不断探索之中,针对动画场景教学中的一些问题进行积极地探索,丰富国内动画场景的教学实践。     

An optimal part sending policy for a production system in a generalconfiguration with a new control strategy

We consider a production system in a general configuration with a new control strategy: the push mechanism for the part transport and the kanban technique for the work-in-process (WIP). The production system is composed of many stations such as an entrance station, a set of work stations, a central station, and an exit station, that are arranged in a general configuration. The push mechanism is followed for transporting a part from a station to a destination station. The kanban technique is adopted for controlling the WIP in a work station. The production system is modeled by a closed queuing network in a general configuration with a Markov part sending mechanism and a machine no blocking (MNB) technique. An optimal part sending policy that maximizes the expected system throughput is formulated into a long run average semi-Markov decision process. Three solution approaches are developed for obtaining optimal or suboptimal solutions. Numerical examples are given to evaluate the quality of the solutions obtained by the solution approaches     

φ4.6×8.5+3.5m烘干中卸磨滚圈机械加工工艺的制定

厂生产的φ4.6×8.5+3.5m烘干中卸生料磨为国内2 00t/d新型干法水泥生产线主要的生料制备主机.滚圈是该磨机中的重要零件,其加工尺寸的准确性对于保证装配精度和磨机的可靠运转,具有重要作用.本文结合该磨机回转部分的结构特点,对滚圈加工工艺的制定作一分析.     

遗传算法工具箱在半主动-TMD参数优化中的应用

提出一种新型的结构振动控制变频TMD半主动控制系统,采用遗传算法工具箱分析了结构的动力放大系数,证实了其对结构振动控制的可行性和有效性。结果表明,单个变频-TMD作为一种半主动驱动器能有效降低结构反应,与传统TMD相比,具有更大的减振频带宽度,而且效果显著。     

Smooth twin support vector regression

Twin support vector regression (TSVR) was proposed recently as a novel regressor that tries to find a pair of nonparallel planes, i.e., ε-insensitive up- and down-bounds, by solving two related SVM-type problems. However, it may incur suboptimal solution since its objective function is positive semi-definite and the lack of complexity control. In order to address this shortcoming, we develop a novel SVR algorithm termed as smooth twin SVR (STSVR). The idea is to reformulate TSVR as a strongly convex problem, which results in unique global optimal solution for each subproblem. To solve the proposed optimization problem, we first adopt a smoothing technique to convert the original constrained quadratic programming problems into unconstrained minimization problems, and then use the well-known Newton–Armijo algorithm to solve the smooth TSVR. The effectiveness of the proposed method is demonstrated via experiments on synthetic and real-world benchmark datasets.     

彩色喷墨打印夜光纸性能研究

研究了发光粉的种类、用量以及阳离子固色剂的用量对打印夜光纸性能的影响．结果表明：天蓝色发光粉的成纸性能优于黄绿色和蓝绿色发光粉的成纸性能,但是由于天蓝色发光粉的发光强度低、余辉时间短而不考虑使用;发光粉的用量20％为宜;随着阳离子固色剂用量的增加,打印性能得到提高,但是需要控制用量,阳离子固色剂适宜用量为5％．喷墨打印夜光纸不仅能在暗处发光,而且具有喷墨打印的特性,因此它必将展现出广阔的市场前景和发展潜力．