基于Java与Flex的科技计划项目管理系统实现

主要介绍了利用Flex与Java的集成构建,实现科技计划项目管理系统的方法,包括业务层的实现,表示层中模型的实现、控制器的实现、视图的实现,数据持久层的实现以及LCDS的实现方法.     

基于FPGA的数字钟系统的设计与实现

与机械钟相比,数字钟是一种更准确、直观的计时工具,设计方式也有多种,有软件仿真实现、单片机实现、PC机实现、专用电子钟芯片实现等多种实现方法。本文介绍了一种基于FPGA实现数字钟的硬件实现方法,能较大降低硬件实现的复杂度。     

高级加密标准S盒的ASIC实现

S盒在AES中占有至关重要的地位,在AES的硬件实现过程中,S盒的实现直接决定了它的性能和实现代价.传统实现方法是利用查表的方法,这种实现方法经综合工具处理后,利用率只有25%左右,实现性能很低.给出了高级加密标准的S盒的一种硬件实现,用纯逻辑算法实现了S盒.这种实现方法与一般的查表实现方法相比较,版图时的利用率大大提高,一般用该方法可以到达70%.     

基于Annotation的Spring事务应用设计

讲解Spring的事务实现技术,讨论Spring中事务的两种实现方式。通过同一个案例阐述了在Spring中对XML配置来实现事务和使用了Annotation实现事务,比较了两种实现方式的优缺点。在Spring使用Annotation实现事务作出总结,从而体现使用Annotation实现事务简洁性和良好的扩展性。     

RSA公开密钥算法在面向对象编程方法下的实现

该文主要针对RSA算法在面向对象编程方法(OOP)下的实现,系统地给出了类的定义、核心函数的实现流程、使用的主要计算机算法。使得算法实现较传统的实现方法,代码更容易重用、数据有更好的封装性和安全性、实现流程更清晰。通过算法的选取和优化,获得了较传统实现方法更好的系统实现性能。     

基于LOTOS形式规范的目标实现

LOTOS形式规范的目标实现是协议设计中必不可少的阶段之一。该文对基于LOTOS的形式描述规范的实现方法进行了研究,包括目标实现环境的特点、实现中的空白因素、抽象模型到实现模型的转换、规范的最终目标实现,并对如何将LOTOS规范转换为C、C 语言实现进行了探讨。     

基于Annotation的Spring事务应用设计

该文简要介绍Spring的事务实现技术,讨论了Spring中的事务的两种实现方式。通过同一个案例阐述了在Spring中通过xml配置来实现事务和使用了Annotation实现事务,比较了两种实现方式的优缺点。对在Spring使用Annotation实现事务作了总结,从而体现使用Annotation实现事务简洁性和良好的扩展性。     

基于GPU的特征点提取与匹配算法比较

判断一种算法的GPU实现是否和CPU实现一样可靠、算法的GPU实现是否能够被安全地使用,是GPU实现能否进一步推广的关键问题.文中以SIFT和KD树搜索这2个被广泛使用的算法为例,对其GPU实现和CPU实现进行了系统的实验分析和比较测试.此外,针对高分辨率图像,给出了基于GPU的SIFT算法和KD树搜索算法的设计与实现.实验结果表明,基于GPU的实现和CPU的实现能提取出95％左右的相似特征点;2种算法实现的特征点重复率和匹配率相当,但GPU实现可获得高达13X(特征提取)和43X(特征匹配)的加速比,因此基于GPU的实现在具体应用中完全可以被安全地使用.     

基于CUDA的高效IDEA加密算法设计与实现

为了实现一个高效的加密算法,本文充分利用图形处理器(GPU)的并行处理能力,提出基于CUDA实现IDEA加密算法的方法,对该方法的设计和实现进行详细的阐述,并通过实验与传统的基于CPU的实现方法进行性能比较,基于CUDA的IDEA实现速度上远远高于基于CPU的实现.     

FCMAC网络的软硬件协同设计与实现

提出了FCMAC网络的一种基于NiosII的软硬件协同设计方法,解决了FCMAC软件实现速度慢、硬件实现耗资源的不足。通过Matlab仿真得出FCMAC网络的各参数。分析影响软件实现FCMAC速度的关键算法,对FCMAC算法进行软硬件划分。在NiosII IDE开发环境下,基于C实现软件模块,以用户自定义指令形式实现硬件模块和软硬件的衔接,即完成软硬件的协同设计。试验结果表明,FCMAC的软硬件协同实现在软件实现速度慢、硬件实现耗资源之间实现了折中,可通过不同的软硬件划分,实现速度与资源的互换。     

Efficient Development of Lexical Language Resources and their Representation

Statistical approaches in speech technology, whether used for statistical language models, trees, hidden Markov models or neural networks, represent the driving forces for the creation of language resources (LR), e.g., text corpora, pronunciation and morphology lexicons, and speech databases. This paper presents a system architecture for the rapid construction of morphologic and phonetic lexicons, two of the most important written language resources for the development of ASR (automatic speech recognition) and TTS (text-to-speech) systems. The presented architecture is modular and is particularly suitable for the development of written language resources for inflectional languages. In this paper an implementation is presented for the Slovenian language. The integrated graphic user interface focuses on the morphological and phonetic aspects of language and allows experts to produce good performances during analysis. In multilingual TTS systems, many extensive external written language resources are used, especially in the text processing part. It is very important, therefore, that representation of these resources is time and space efficient. It is also very important that language resources for new languages can be easily incorporated into the system, without modifying the common algorithms developed for multiple languages. In this regard the use of large external language resources (e.g., morphology and phonetic lexicons) represent an important problem because of the required space and slow look-up time. This paper presents a method and its results for compiling large lexicons, using examples for compiling German phonetic and morphology lexicons (CISLEX), and Slovenian phonetic (SIflex) and morphology (SImlex) lexicons, into corresponding finite-state transducers (FSTs). The German lexicons consisted of about 300,000 words, SIflex consisted of about 60,000 and SImlex of about 600,000 words (where 40,000 words were used for representation using finite-state transducers). Representation of large lexicons using finite-state transducers is mainly motivated by considerations of space and time efficiency. A great reduction in size and optimal access time was achieved for all lexicons. The starting size for the German phonetic lexicon was 12.53 MB and 18.49 MB for the morphology lexicon. The starting size for the Slovenian phonetic lexicon was 1.8 MB and 1.4 MB for the morphology lexicon. The final size of the corresponding FSTs was 2.78 MB for the German phonetic lexicon, 6.33 MB for the German morphology lexicon, 253 KB for SIflex and 662 KB for the SImlex lexicon. The achieved look-up time is optimal, since it only depends on the length of the input word and not on the size of the lexicon. Integration of lexicons for new languages into the multilingual TTS system is easy when using such representations and does not require any changes in the algorithms used for such lexicons.     

Meme Media for Clipping and Combining Web Resources

The publication and reuse of intellectual resources using the Web technologies provide no support for us to clip out any portion of Web pages, to combine them together for their local reuse, nor to publish the newly composed object as a new Web page for its reuse by other people. This paper shows how the meme-media architecture is applied to the Web to provide such support for us. This makes the Web work as a shared repository not only for publishing intellectual resources, but also for their collaborative reediting. We will propose a general framework for clipping arbitrary Web contents as live objects, for defining IO ports on such a clip, and for the recombination and linkage of such clips based on both the original and some user-defined relationships among them. In our previous works, we proposed two separate frameworks for these three purposes; one works for the first two, and the other for the last. Here we will propose a unified framework for these three purposes, as well as its detailed internal mechanisms. Then we show how it can be easily applied to various legacy Web applications to develop innovative services.     

非合作航天器自主相对导航研究综述

非合作航天器自主相对导航作为与非合作航天器实现空间交会对接过程中的关键技术,是在轨服务技术的重点发展方向之一,其研究具有重要的理论价值与工程意义.针对在轨服务任务对于自主相对精确导航的需求,本文对发展非合作航天器自主相对导航技术的必要性进行了阐述.首先总结了非合作航天器自主相对导航技术的内涵与研究现状;随后分析梳理了非合作航天器自主相对导航过程涉及到的光学敏感器、位姿测量、导航滤波器以及地面实验等关键技术.最后根据研究现状和关键技术的分析指出了非合作航天器自主相对导航目前存在的主要问题并给出后续发展的建议.     

Discrete estimators of characteristics for periodically correlated time series

Results of an investigation of the characteristic estimator properties for periodically correlated time series obtained on the basis of finite data length are given. The formulae for the bias and variance of the estimators for mean and covariance function Fourier coefficients are found. The conditions for the choice of sampling interval value, for which aliasing effects do not appear, are obtained. The interpolation formulae for the mean and covariance function estimates are derived. The dependencies of the statistical characteristics of the estimators on sampling interval and sample size for modulated signals are analyzed.     

水利系统干部人事档案数字信息化建设探索与实践

干部档案数字信息化建设是干部档案工作在信息化时代的必由之路,是提高干部信息管理和利用水平的必然要求。在阐述档案数字信息化概念的基础上,以南京水利科学研究院干部人事档案数字信息化建设为实例,对水利干部人事档案数字信息化建设进行有益探索,提出水利系统干部人事档案数字信息化系统建设的要素确定、基本程序及主要环节,具有实用性和可操作性。     

基于物联网技术的智能家居椅控制系统设计

针对国内外智能家居椅控制系统二次开发难度大、接口兼容性差等问题,基于物联网技术,对现有智能家居椅控制系统进行了二次开发。采用STM32控制器对智能家居椅控制系统的输入输出接口进行扩展,引入压力传感器、S型称重传感器、光电探测器对家居椅各个执行机构进行监测,开发了基于Java语言的微信客户端应用(APP)程序,实现了智能家居椅捶背力度调节、复合机构助起、阅读灯亮度调节等远程智能操控。智能家居椅捶背控制试验表明,捶背次数控制成功率约85.49%,捶背力度控制成功率约86.50%。复合机构助起试验表明,助起控制成功率约90%。阅读灯亮度调节试验表明,亮度调节成功率可达88.46%,系统可控性较高。采用物联网技术对智能家居椅控制系统进行了创新性设计,二次开发的控制系统可为互联网+智能家居的设计提供参考。     

Joint organisational and technical development of CIM-systems: An extension of the classic scandinavian approach

In Scandinavia theories and methods for cooperative design tools for the computer supported craftsman have been the topics for intensive research for several years. This paper widens the discussion by taking in the question of CIM and the reshaping of the division of labour, work organisation and manufacturing processes. The paper argues for an evaluation of methods and tools developed for very different aspects of integrated manufacturing.     

Finite horizon planning for a production system with permitted shortage and fixed-interval deliveries

Raw material ordering policy and the manufacturing batch size for frequent deliveries of finished goods for a finite horizon plays a significant role in managing the supply chain logistics economically. This research develops an ordering policy for raw materials and determines an economic batch size for a product in a manufacturing system that supplies finished products to customers for a finite planning horizon. Fixed quantities of finished products are delivered to customers frequently at a fixed interval of time. In this model, an optimal multi-ordering policy for procurement of raw materials and production cycle time for a two-stage production and supply system is developed to minimize the total cost incurred due to raw materials and finished goods inventories. The problem is then extended to compensate for the lost sales of finished products. A closed-form solution to the problem is obtained for the minimal total cost. A lower bound on the optimal solution is also developed for problem with lost sale. It is shown that the solution and the lower bound are consistently tight.     

A Probabilistic Analysis of Multiple-drug Testing Procedures in Sports Doping Control

Athletes engaged in competition, particularly those involved in international competitions such as the Olympics, are increasingly being tested for a greater variety of banned substances; it is not unusual for tests to be conducted for 100 drugs and another 400 as metabolites. Previous studies related to the accuracy of drug testing processes have failed to properly consider the effects of testing for more than one drug. In order to identify appropriate indicators for the multiple-drug case, probability theory and accuracy concepts applicable to testing for multiple drugs are developed and applied to illustrative data. The probability that a drug-free individual will test positive for drug use is shown to be much higher than indicated by previous studies, and it is shown that an increase in the number of drugs tested for yields an approximately proportionate increase in the probability that a positive test result is erroneous. Therefore, while testing for one drug may result in a comfortably low rate of false accusations of drug use, testing for multiple drugs may well result in an unacceptably high rate. Finally, a set of empirical measures is suggested for use in cases of tests for multiple drugs; the measures will provide for comparability among laboratory proficiency studies.     

A dynamic workflow framework for mass customization using web service and autonomous agent techniques

Custom software development and maintenance is one of the key expenses associated with developing automated systems for mass customization. This paper presents a method for reducing the risk associated with this expense by developing a flexible environment for determining and executing dynamic workflow paths. Strategies for developing an autonomous agent-based framework and for identifying and creating web services for specific process tasks are presented. The proposed methods are outlined in two different case studies to illustrate the approach for both a generic process with complex workflow paths and a more specific sequential engineering process.