中国固网市场的竞争分析

当前固网经营环境的特点:①全球经济增长疲软.世界电信增长乏力;②移动业务在一定程度上分流了固网的业务;③IP业务以明显的价格优势,抢取了相当大量的固网长途业务;④国内和国际业务资费下调:⑤发达地区电话业务已基本饱和.新的业务增长点较少;⑥中西部地区经济发展水平不高;⑦普遍服务机制仍在酝酿中,责、权、利还处于混沌状态;⑧新的运营企业虽然已正式挂牌,但内部的整合和融合还需要一定的时间。 未来固网市场竞争将具有以下的特点:①从传统业务的竞争转向基于网络的增值业务;②从大量增加用户的数量竞争转向电话二次消费市场的开发竞争;③从单纯的价格竞争转向服务质量和个性化服务的竞争;④从排他性竞争转向合作和多赢模式的竞争;⑤从单业务竞争转向全业务、多业务竞争,以规避和降低风险;⑥固话利润越来越少.大客户市场的竞争将会更加激烈;⑦竞争在区域上将发生转移。     

浅谈中国铁通湖南分公司固网智能化

时固网进行优化,提升了网络的业务提供能力.     

UMA方式实现固网与蜂窝网络融合的研究

UMA（Unlicensed Mobile Access）是一种使用ISM（Industrial，Scientific，Medical）频段的无线接入技术。文中分析了目前固网和移动网络存在的问题，并介绍了LIMA技术实现固网与蜂窝网络融合的方式。介绍UMA方式是如何融人GSM／GPRS系统中（通过重新定义空中接口以及相关协议），使得固网资源得到充分利用，并且保证互连互通。     

固网支付中密钥分发问题的一种解决方案

固网支付是中国电信与中国银联合作推出的一项固网短消息增值业务,需要较高的安全级别.为了在兼容现行固网支付安全方案并扩充业务的同时提高系统的安全强度,实现动态密钥分发以达到一次一密,并满足业务对效率的需求,从密钥分发的角度探讨了实现目标的方法.它分析了固网支付业务系统结构和安全需求,以及固网支付中现行的密钥分发机制,针对现行机制可能存在的问题并综合各种密钥分发机制提出一种适用于多内容提供商的新方案.     

UMA方式实现固网与蜂窝网络融合的研究

UMA(Unlicensed Mobile Access)是一种使用ISM(Industrial,Scientific,Medical)频段的无线接入技术。文中分析了目前固网和移动网络存在的问题,并介绍了UMA技术实现固网与蜂窝网络融合的方式。介绍UMA方式是如何融入GSM/GPRS系统中(通过重新定义空中接口以及相关协议),使得固网资源得到充分利用,并且保证互连互通。     

基于CTSI协议的跨系统的FSK Access Server的设计与实现

CTSI作为中国本土制定的协议,现使用其开发的相关增值业务越来越多。本文主要针对CTSI平台中的FSK接入服务器的结构、设计和性能进行分析和讨论。     

用户核心NGN解决方案

当前．电信市场的驱动力正在发生巨大的变化。运营商依靠传统的语音业务及月租费获得的巨大收入正面临着越来越大的压力，而新的数据业务收入仍然难堪重任。因此，所有的运营商都在对同一用户群进行争夺：移动运营商采用移动业务对固网业务进行替换；新兴的宽带运营商利用VoIP对传统语音业务进行分流；有线电视公司也通过三方的合作加入到竞争中来。为了在白热化的市场竞争中展露头角，各运营商致力于改善现有的彼此分离的用户业务体验，从而导致以用户为核心的新通信格局的诞生，传统的以技术为核心的通信格局被取代。     

基于固网智能化软交换系统的设计研究

随着社会的发展,人们对于通信的要求也越来越高,现有的固网网络已经不能满足人们的需求.本文介绍了固网的现状,提出一种基于固网智能化软交换系统,并且以湖北省荆州市固网建设为例子,对此系统的建设做了详细探讨.     

固网与移动网的协同接入,建立集团综合网络服务

移动接入网和固网接入网未来都走向光纤化,这使得接入层网络的融合具备了基础.     

固网宽带接入内容的市场分析与未来发展方向

我国电信业传统的依靠用户数量扩张拉动收入、利润高速增长的模式已经面临挑战,如何依靠业务创新,营销创新,管理创新等方式来引导"消费积聚"和"消费升级",从而实现产业的可持续增长将是固网面临的主要问题。因此,在目前的环境下,固网必须认真研究用户需求的转变。本文就固网宽带接入内容市场研究与发展方向做了相关探索与思考。     

VB打印技术研究

提出两种技术可提高打印开发的速度和质量.通过程序自动识别窗体上文本框、标签和图片框等控件,并按以上控件对应打印程序进行输出,实现打印的自动化;介绍一种打印预览实用技术,可实现复杂格式的输出.     

基于视觉选择性注意机制的目标检测的研究

视觉选择性注意模型的应用是当今认知信息处理领域的研究热点。根据人类视觉感知理论,在介绍具有代表性的视觉注意模型（Itti模型）的基础上,在特征提取的初级阶段引入新的低层视觉特征,形成一种新的引导注意的显著图,从而实现较为准确的目标检测。结果证明该方法在一定程度上避免了漏检测现象的发生,使得注意区域更能接近生物视觉系统的实际。     

通用快递单打印程序编程方法

介绍了开发通用快递单打印程序的编程构架,实现了自由存取收件人名址、自由设置表单格式、部分或全部选取收件人成批打印的功能。文中的代码具有通用性,可以方便地应用于类似的软件编程实践中。     

基于BACON系统实现彩色图像黑白打印方法的自动化

基于科学发现中的BACON系统,提出将屏幕上的标准RGB彩色图像转换为黑白灰度图像打印输出的方法,利用学习算法,并根据人眼的视觉特性,发现转换函数,从训练例子中发现转换函数中的能数,无需修改打印程序,在不同的墨水,纸张和抖动模式下可重新通过学习程序发现这些参数,因此,该方法具有一一的通用性,实现了彩色图像黑白打印的自动化。     

Development and application of a white box approach to integration testing

Program testing techniques can be classified in many ways. One classification is that of “black box” vs. “white box” testing. In black box testing, test data are selected according to the purpose of the program independent of the manner in which the program is actually coded. White box testing, on the other hand, makes use of the properties of the source code to guide the testing process. A white box testing strategy, which involves integrating a previously validated module into a software system is described. It is shown that, when doing the integration testing, it is not enough to treat the module as a “black box,” for otherwise certain integration errors may go undetected. For example, an error in the calling program may cause an error in the module's input which only results in an error in the module's output along certain paths through the module. These errors can be classified as Integration Domain Errors, and Integration Computation Errors. The results indicate that such errors can be detected by the module by retesting a set of paths whose cardinality depends only on the dimensionality of the module's input for integration domain errors, and on the dimensionality of the module's inputs and outputs for integration computation errors. In both cases the number of paths that need be retested do not depend on the module's path complexity. An example of the strategy as applied to the path testing of a COBOL program is presented.     

PackMerger: A 3D Print Volume Optimizer

We propose an optimization framework for 3D printing that seeks to save printing time and the support material required to print 3D shapes. Three‐dimensional printing technology is rapidly maturing and may revolutionize how we manufacture objects. The total cost of printing, however, is governed by numerous factors which include not only the price of the printer but also the amount of material and time to fabricate the shape. Our PackMerger framework converts the input 3D watertight mesh into a shell by hollowing its inner parts. The shell is then divided into segments. The location of splits is controlled based on several parameters, including the size of the connection areas or volume of each segment. The pieces are then tightly packed using optimization. The optimization attempts to minimize the amount of support material and the bounding box volume of the packed segments while keeping the number of segments minimal. The final packed configuration can be printed with substantial time and material savings, while also allowing printing of objects that would not fit into the printer volume. We have tested our system on three different printers and it shows a reduction of 5–30% of the printing time while simultaneously saving 15–65% of the support material. The optimization time was approximately 1 min. Once the segments are printed, they need to be assembled.     

Creativity,method and process in digital fabric printing: a 21st century paintbrush

Abstract

This paper analyses how the arrival and widespread use of digital printing affects the artist as maker in the postmodern world of instant reproduction. In response to the question of using digital printing as an artistic tool, a 21^st century paintbrush, the marks and imagery of paintings and drawings of the author's own work produced over the past few years were analysed. The digitally printed fabric outcomes, large scale painterly prints, will be presented as examples of how digitisation becomes a powerfultoolto the textile artist with the creative textile maker manipulating technology and not being controlled by it. The conclusion will show how digitisation and new technologies should not be seen as creating isolation but can be integrated into the textile artist's tool box to inspire and enhance creativity.     

基于周期性晶格的3D打印模型轻量化方法

为了获得3D打印模型节材效果和优化的物理力学性能,从晶格的形状多变性出发,提出了一种基于晶格的3D打印轻量化结构生成方法,由此产生的轻量化结构用来替代给定模型的实体空间.首先,提出了一种通用的晶格描述方法,进而对晶格的几何和拓扑特征进行个性化设计.其次,通过在模型包围盒内周期性排列晶格单元,构造出了实体建模所依附的拓扑...     

A simple BASIC program for constructing three-dimensional graphs

This report describes a simple program for plotting three-dimensional curves and thus allowing a visual representation of the simultaneous interaction of three variables. Graphs can be displayed on the screen or printed using a graphics printer. The original data can be stored, printed, recalled and edited, as can the graph parameters. Completed graphs can also be stored for later review or printing. The program as outlined can accommodate up to 10 curves of up to 50 points each, but these limits can be easily increased. The program is written in BASIC, thus allowing it to be readily modified. As listed, the complete source code has 357 lines and occupies about 12 kilobytes when saved in compressed binary format.     

专用语音信箱数据采集与处理

介绍的专用语音信箱由２ 条中继线、７ 台分机、１ 个语音处理单元以及呼叫处理程序和语音信箱管理程序组成。内外线电话能够互相呼叫或拨号访问信箱,并拥有多种程控业务新功能。语音信箱具有查询、留言和播放公众信息等功能,在被叫忙音或无应答时自动进入信箱。呼叫处理程序使用状态迁移法解决呼叫信号采集、处理的多重性问题;使用时间调度技术解决多用户的实时处理问题;使用ＶｉｓｕａｌＢａｓｉｃ的ＭＳＣＯＭＭ 控件实现了串行口交互通信;将多媒体ＭＩＣ控件用于语音信息的记录、储存和重放过程。该语音信箱有明显的实用价值