iS-ERP环境下供应管理子系统的设计与实现

讨论了面向家纺企业的iS-ERP系统中的供应管理子系统.介绍了该子系统设计,包括它的设计目标和系统功能.最后详细介绍了该子系统的实现技术,包括系统采用的结构、系统采用的开发模式和以模块开发此系统的实现方法.应用结果表明,该子系统具有较高的实用性.     

基于CDMA网络的远程心电监护系统的研制

针对国内现有的远程心电监护系统存在实时性差,患者的活动范围受限等问题.提出了一种基于CDMA移动终端的远程心电监护系统,它由前端CDMA移动终端和医院中央监护系统组成.介绍了该系统的原理,阐述了系统实现的过程并给出了前端模块结构框图.该远程心电监护系统已通过临床测试,测试结果表明该系统具有较好的灵活性和方便性.能满足心脏病人随时随地监护的需要.     

WLAN+RFID组合系统的应用研究

提出了一种由WLAN和RFID组成的称为WLAN RFID的组合系统.阐述了该系统的工作原理,以及在室外货场中的应用.该系统利用了WLAN的无线传输和RFID的非接触式自动识别的特点,能为用户提供快捷、灵活和移动式的识别服务.分析了该系统的工作频率分配、所采用的调制技术、移动终端的漫游以及系统的信息安全保障.指出了该系统的信息安全重点是WLAN,如果WLAN已经采用了足够的安全措施,那么RFID就可以不再设加密功能了.     

一种远距离激光位移/挠度测量系统的设计

描述一种能够测量远处物体的位移或者挠度的远距离激光位移/挠度测量系统,并对该系统的结构、工作原理以及硬件和软件部分进行了详细的介绍,给出了实验测试结果.该系统由一个激光光源和一个线性测量系统组成.激光光束首先经过校准,然后聚焦在测量系统上来进行长距离精确测量.激光光源和测量系统之间的相对位移反映出了物体的位移或者挠度.该系统使用了一定的信号和图像处理方法来提高系统的精度和准确性,并且使用了长距离无线数字通信,提高了信号传输的稳定性、安全性,避免了长距离信号线布线的繁琐.该系统还使用单片机系统和8位数码管结合的方式进行数据计算和显示,不再依赖计算机,使测量系统具有更好的便携性.由于该测量系统具有高精度、高准确度的特点并且结构简单、成本低廉,将有良好的应用前景.     

基于身份的电子签章系统设计研究

利用基于身份的数字签名和加密体制,设计了一个基于身份的电子签章系统,并给出了该系统的软件架构和实现过程.该签章系统与传统的基于证书的系统相比,无须对证书库进行维护,安全级别高且系统开销小,是一种实用的电子签章系统.分析和测试结果表明,该系统是安全且高效的.     

单向耦合Lorenz Rssler系统的多参数分岔

深入研究了单向耦合Lorenz-Rssler系统的动力学行为,首先定性地分析了该系统,找出了该系统所有平衡点及平衡点存在和稳定的条件.再对该系统的分岔行为做了理论分析,得到该系统发生fold和Hopf分岔的条件.最后利用分岔软件对前面的理论进行验证,而且针对三个单向耦合参数的不同取值情况,从数值的角度研究了该系统的多参数分岔,结果表明不同的耦合强度对于系统的动力学行为有较大的影响.     

单向耦合Lorenz-R(o)ssler系统的多参数分岔

深入研究了单向耦合Lorenz-R(o)ssler系统的动力学行为,首先定性地分析了该系统,找出了该系统所有平衡点及平衡点存在和稳定的条件.再对该系统的分岔行为做了理论分析,得到该系统发生fold和Hopf 分岔的条件.最后利用分岔软件对前面的理论进行验证,而且针对三个单向耦合参数的不同取值情况,从数值的角度研究了该系统的多参数分岔,结果表明不同的耦合强度对于系统的动力学行为有较大的影响.     

DCS仿真系统开发平台

为了快速高效地开发DCS仿真系统,开发了相关的平台软件,包括系统管理、界面组态系统和控制组态系统等功能模块.该平台改变了传统的仿真机体系结构,增强和完善了仿真系统的功能.该平台的设计充分参考了目前流行的实际DCS的基本结构和工作模式,使仿真机的开发和维护过程都接近DCS系统本身,便于用户理解、应用和掌握.利用该平台开发完成了多台DCS仿真系统,这些仿真系统的成功运行证明了系统的可用性,同时根据使用过程中发现的不足之处来完善该系统,使得其功能更加合理,使用更加方便.     

分数阶Genesio Tesi系统的混沌及自适应同步

对具有五次方非线性项的分数阶Genesio-Tesi系统的混沌及自适应同步进行了研究.首先分析了该系统平衡点的稳定性,并发现该系统满足出现双涡卷混沌吸引子的必要条件.然后研究了在阶数相同和不同的两种情况下的吸引子以及系统随阶数变化的分岔情况.该系统在两种情况下存在混沌的最小有效维数分别为2.784和2.793.基于分数阶系统的稳定性理论,实现了该分数阶系统的自适应混沌同步.数值模拟验证了所设计的自适应控制器和未知参数的辨识观测器的有效性.     

卫星制导弹药综合检测系统的设计与实现

设计了一种卫星制导弹药综合检测系统.介绍了该综合检测系统的总体设计思想,系统组成、工作原理和主要技术途径,并对该系统的各组成部分的功能和软件设计流程作了说明.实际应用表明,该系统性能稳定可靠,操作简便,可提高卫星制导弹药综合检测的测试精度和工作效率,具有良好的使用性能和价值.     

基于MDA的工作流管理系统开发研究

在工作流管理系统建设中，存在业务系统的新增和改造需求。如何优质高效的实现相应业务系统的建设，本文通过 引进 MDA 给出了解决的答案。并通过一个客户管理系统给出实现的案例。     

Libra: a high fidelity knowledge-based system for recommending scheduling programs

Contemporary knowledge systems are usually neither easy to use or understand. We propose a new class of knowledge systems, which we call high fidelity systems, that use representations and processes that closely resemble the objects and tasks with which people are already familiar. To illustrate the concept of high fidelity, we describe Libra, one such system for recommending scheduling programs. Our initial experience with Libra and its usage suggests that high fidelity not only enhances the user acceptability of knowledge-based systems, but it also facilities high speed design and implementation.We chose to replicate the knowledge in Libra because it is already published, and because we wanted to show that a Libra user can have an interface similar to the diagrams drawn in the journal paper. The latter was used to describe the knowledge-based framework for selecting scheduling systems. If we can replicate them in the user interface, we would have successfully created a high fidelity system — that is, the Libra user interface would be at least as able to communicate the framework to the user as the journal paper.     

Analysis of the sound of the Japanese voice using real-time spectral analysis

Voice signal processing requires real-time processing. For this reason, a new method which updates the spectrum by using input data is proposed. In this method, analysis in the time-frequency domain is executed as well as wavelet transform. Vowels /i/ and /e/ consist of fundamental, harmonic, and high frequency waves. These high frequency waves determine the sounds of /i/ and /e/. These high frequency waves may also exist in /a/ and /o/. In this article, we analyze these high frequency waves by using a new analyzing method, and we show the constitution of high frequency waves. Since the waveform of a consonant does not repeat, the analysis cannot be performed like the analysis of the high frequency wave of a vowel. In a consonant, we show the fluctuation of the spectrum with time.     

Data-driven predictive control for a class of uncertain control-affine systems

This article studies a data-driven predictive control for a class of control-affine systems which is subject to uncertainty. With the accessibility to finite sample measurements of the uncertain variables, we aim to find controls which are feasible and provide superior performance guarantees with high probability. This results into the formulation of a stochastic optimization problem (P), which is intractable due to the unknown distribution of the uncertainty variables. By developing a distributionally robust optimization framework, we present an equivalent and yet tractable reformulation of (P). Further, we propose an efficient algorithm that provides online suboptimal data-driven solutions and guarantees performance with high probability. To illustrate the effectiveness of the proposed approach, we consider a highway speed-limit control problem. We then develop a set of data-driven speed controls that allow us to prevent traffic congestion with high probability. Finally, we employ the resulting control method on a traffic simulator to illustrate the effectiveness of this approach numerically.     

基于小波分析的散乱测量数据的压缩算法

对于大量的含有噪声的散乱测量数据 ,首先利用 B样条小波对其进行去噪处理 ,然后以离散数据的曲率值为分析对象进行多分辨分析 ,依据所得的高频系数在一定的阈值条件下对原数据进行重采样处理 ,以达到数据压缩的目的 .     

基于依存句法分析的复合事实型问句分解方法

问答系统一直以来都是自然语言处理领域的研究热点之一,然而现有问答系统技术对复合事实型问句的处理效果并不完美。为了增强问答系统理解复合事实型问句的能力,该文提出了一种针对复合事实型问句的分解方法: 使用基于树核的支持向量机对问句的分解类别进行识别,进而使用基于依存句法分析的方法生成分解结果。实验结果显示,在我们所构建的高质量问句分解语料库中,我们的方法对问句分解类别进行了准确的识别,同时也可以较好地生成嵌套型问句的子问句。     

基于低阈值单元的高性能低功耗设计方法

在高性能IC设计中对高低两种阈值电压技术进行比较,利用低阈值电压降低动态功耗的手段实现降低总功耗的目标,并分析出了两种阈值电压低功耗设计各自适应的电路类型。首先对40nm工艺中标准单元的内部功耗、时序、尺寸进行分析。接着在相同延时下对高阈值和低阈值两种标准单元所设计的反相器链时序电路的功耗进行对比分析。最后基于Benchmark和AES两种类型电路,分别采用高阈值和低阈值进行综合,对比得出在相同时钟周期下更低功耗的设计所对应的阈值电压设计方式。结果显示,在相同的时钟频率下,对动态功耗占据总功耗比例极大的电路使用低阈值设计得到的功耗更低。同样,在动态功耗比例不是极大的电路中,当低阈值综合的slack为正时,以及当高阈值综合的slack为负、低阈值的slack为0时,用低阈值设计功耗更低;而当高阈值、低阈值综合的slack都为0时,用高阈值设计功耗更低。     

Irradiance regression for efficient final gathering in global illumination

Photon mapping is widely used for global illumination rendering because of its high computational efficiency. But its efficiency is still limited, mainly by the intensive sampling required in final gathering, a process that is critical for removing low frequency artifacts of density estimation. In this paper, we propose a method to predict the final gathering estimation with direct density estimation, thereby achieving high quality global illumination by photon mapping with high efficiency. We first sample the irradiance of a subset of shading points by both final gathering and direct radiance estimation. Then we use the samples as a training set to predict the final gathered irradiance of other shading points through regression. Consequently, we are able to achieve about three times overall speedup compared with straightforward final gathering in global illumination computation with the same rendering quality.     

The design of fuzzy information granules: Tradeoffs between specificity and experimental evidence

Granulation of information has become an underlying concept permeating a vast array of pursuits. In this study, we address a fundamental issue of the design of “meaningful” information granules. The underlying principle guiding their development realizes a tradeoff between a specificity of information granule (which we want to keep as high as possible) and the associated experimental evidence (which needs to be maintained high as well). Recognizing the fact that these are directly in conflict, we formulate the problem as a certain optimization task. In the sequel, we discuss the solutions and analyze their properties. In particular, we will deal with an array of parametric optimization dealing with various commonly encountered types of membership functions.     

Image Smoothing Based on Image Decomposition and Sparse High Frequency Gradient

Image smoothing is a crucial image processing topic and has wide applications. For images with rich texture, most of the existing image smoothing methods are difficult to obtain significant texture removal performance because texture containing obvious edges and large gradient changes is easy to be preserved as the main edges. In this paper, we propose a novel framework (DSHFG) for image smoothing combined with the constraint of sparse high frequency gradient for texture images. First, we decompose the image into two components: a smooth component (constant component) and a non-smooth (high frequency) component. Second, we remove the non-smooth component containing high frequency gradient and smooth the other component combining with the constraint of sparse high frequency gradient. Experimental results demonstrate the proposed method is more competitive on efficiently texture removing than the state-of-the-art methods. What is more, our approach has a variety of applications including edge detection, detail magnification, image abstraction, and image composition.