如何利用PowerPoint实现交互

PowerPoint是大家比较熟悉的Office办公软件之一,是大多数企事业单位日常办公中必不可少的应用软件,通过介绍演示文稿的类型入手引出演示文稿对交互性的需求,并具体介绍了演示文稿的适用范围,在演示文稿的交互实现上,通过超链接、触发器和控件与VB代码的方式来满足交互性需求。     

如何用PDFtoJPG 1.2.3将PDF文档转换为JPG图片

安装PDFtoJPG 1.2.3汉化版后,即可得到该软件的绿色汉化版。但是用它们转换PDF文件所得到的JPG图片上都会有试用版的水印。用十六进制编辑器WinHex V16.0.5绿色中文特别版打开PDFtoJPG.exe,将水印文字清零即可得到绿色汉化去水印版。然后将需要转换的PDF文件拖放到程序列表区,点击转换就可以得到无水印的JPG图片。     

Alternatives to truthfulness are hard to recognize

The central question in mechanism design is how to implement a given social choice function. One of the most studied concepts is that of truthful implementations in which truth-telling is always the best response of the players. The Revelation Principle says that one can focus on truthful implementations without loss of generality (if there is no truthful implementation then there is no implementation at all). Green and Laffont (Rev Econ Stud 53:447–456, 1986) showed that, in the scenario in which players’ responses can be partially verified, the revelation principle holds only in some particular cases. When the Revelation Principle does not hold, non-truthful implementations become interesting since they might be the only way to implement a social choice function of interest. In this work we show that, although non-truthful implementations may exist, they are hard to find. Namely, it is NP-complete to decide if a given social choice function can be implemented in a non-truthful manner, or even if it can be implemented at all. This is in contrast to the fact that truthful implementability can be efficiently recognized, even when partial verification of the agents is allowed. Our results also show that there is no “simple” characterization of those social choice functions for which it is worth looking for non-truthful implementations.     

Visitors to Jerusalem to get smart discounts

Smart cards packed with special offers and discounts are to be offered to tourists in a bid to boost the tourism industry in Jerusalem. Tens of thousands of smart cards have been ordered by the Municipality of Jerusalem in partnership with the Israel Hotel Association and the Israeli Ministry of Tourism.This is a short news story only. Visit www.compseconline.com for the latest computer security industry news     

将Java引入TMN的两种方法

介绍了两种将Java应用于TMN的方法：一是将Java引入f参考点，以加强TMN工作站功能的性能；二是将Java引入移动代理，阐述了基于CORBA的移动代理如何增强TMN的管理功能。     

An algorithm to schedule aircraft to sorties

An algorithm is presented which provides Air Force schedulers the capabilit alternative schedules rapidly. This capability enhances the schedulers' ability to obtain “good” schedules by: (1) providing for rapid rescheduling in the event of inevitable changeswhich routinely occur during the period of the schedule, (2) presenting a specific quantifiable set of objectives to be met by the schedule.The algorithm is designed specifically for use by B-52 and KC-135 schedulers in the Strategic Air Command. The objective function includes a term for minimizing hours remaining to phase inspections, where hours remaining to phase inspection refers to the number of flying hours an aircraft is permitted to accrue prior to being grounded for the maintenance action referred to as a phase inspection.Another term in the objective function is to maximize the number of turn-around flights, where a turn-around flight occurs when the same aircraft flys more than one sortie in a 48 hr time period. A turn-around sortie requires less pre-flight maintenance and thus results in a cost savings.A very favorable comparison is presented of algorithm schedules with schedules manually prepared in an operational environment.     

From rigid to soft to biological robots

Artificial Life and Robotics - For much of the history of robotics, robots have been built from inert, inorganic, bulk material, such as metals, plastics, and ceramics. However, advances in...     

在数字印章中嵌入信息的方法及其实现

提出了一种在数字印章图像中的圆环上嵌入信息的方法,以实现文档认证的目的。分析了Bresenham圆序列的各种性质,提出了两个具体的圆环信息嵌入算法,分析了它们的嵌入量和平均形变量。第一个算法仅在圆环的外圆中嵌入数据,其形变较小;第二个算法同时在外圆和内圆中嵌入信息,使信息嵌入量增大了一倍。实验与分析表明,两种算法的平均形变量均小于1像素,其嵌入效果也令人满意。此外,两种算法在普通大小的数字印章中可分别嵌入HMAC-SHA512认证码和1 024比特的RSA签名结果。     

From patterns to frameworks to parallel programs

Object-oriented programming, design patterns, and frameworks are abstraction techniques that have been used to reduce the complexity of sequential programming. This paper describes our approach of applying these three techniques to the more difficult parallel programming domain. The Parallel Design Patterns (PDP) process, the basis of the CO₂P₃S parallel programming system, combines these techniques in a layered development model. The result is a new approach to parallel programming that addresses correctness and openness in a unique way. At the topmost development layer, a customized framework is generated from a design pattern specification of the parallel structure of the program. This framework encapsulates all of the structural details of the pattern, including communication and synchronization, to prevent programmer errors and ensure correctness. Lower layers are used only for performance tuning to make the code as efficient as necessary. This paper describes CO₂P₃S, based on the PDP process, and demonstrates it using an example application. We also provide results from a usability study of CO₂P₃S.     

From members to teams to committee-a robust approach to gestural and multimodal recognition

When building a complex pattern recognizer with high-dimensional input features, a number of selection uncertainties arise. Traditional approaches to resolving these uncertainties typically rely either on the researcher's intuition or performance evaluation on validation data, both of which result in poor generalization and robustness on test data. This paper describes a novel recognition technique called members to teams to committee (MTC), which is designed to reduce modeling uncertainty. In particular, the MTC posterior estimator is based on a coordinated set of divide-and-conquer estimators that derive from a three-tiered architectural structure corresponding to individual members, teams, and the overall committee. Basically, the MTC recognition decision is determined by the whole empirical posterior distribution, rather than a single estimate. This paper describes the application of the MTC technique to handwritten gesture recognition and multimodal system integration and presents a comprehensive analysis of the characteristics and advantages of the MTC approach.     

重视计算机应用构建信息化企业探讨

在知识经济时代,计算机技术已经被应用于各行各业的发展之中,并为人们的生产生活带来极大便利.另外,就企业发展与竞争来说,计算机技术的应用也将不断提高企业经营生产水平.所以,企业想要在市场竞争环境中立于不败之地,就一定要积极构建信息化企业,应用计算机技术促使企业能够更方便、快捷的进行发展.     

PKI能为我国信息化保驾护航吗

当今,由于我国信息化发展突飞猛进,政府和企业的各种信息纷纷上网。同时,由于信息安全政策法规、信息安全产品和专业人才建设等滞后,导致信息安全隐患多、问题严重,媒体也经常报道网络被黑客攻克的新闻,网上银行问题更大,攻克网上银行黑客的技术层次最低,这说明网络银行的安全防范措施十分薄弱。在2002年以前,国家信息化计划     

如何利用PowerPoint使演讲增辉

PowerPoint是微软公司推出的Office主要产品之一,PoworPoint的有效设计与运用是成功的演讲的重要因素,它能够有助于演讲者更直观、更生动地表达自己的思想.本文探讨了利用PowerPoint辅助演讲的具体方式.