移动转售业务的引入对垃圾短信治理的影响和方案研究

本文对移动转售业务引入后对基础电信企业垃圾短信治理的影响进行了分析,基于现网实际情况提出了几种可行的移动转售业务垃圾短信治理方案并进行了比较分析。     

论对垃圾短信拦截与疏导并举

一、运营商监控、拦截垃圾短信的实现机制 随着手机日益普及、短信业务的发展壮大，一些商家和个人打上了手机用户的主意。推销产品、宣传业务的短信不计其数，甚至一些违法信息如办假证、色情服务、中奖陷阱等短信，越来越频繁地光顾用户的手机。这些短信严重影响了普通用户的日常工作和生活，还可能令个别用户被诈骗，因此被大家冠名为“垃圾短信”。     

治理垃圾短信要标本兼治

用＂成也短信,败也短信＂概括短信业务自诞生至今的发展历程,并不为过。短信在给用户带来方便,为商家带来利润的同时,也产生了不少服务纠纷。近几年来治理垃圾短信的呼声越来越高,而垃圾短信治理工作还有待完善。     

垃圾短信的防治方法研究

随着短信业务的迅速发展,垃圾短信给人们带来的骚扰越来越严重.本文首先介绍了垃圾短信的定义、危害以及产生的原因,然后从法律和技术两个方面对垃圾短信的防治方法进行了探讨,最后对垃圾短信的防治方法进行了总结.     

垃圾短信的治理与疏导

1 前言 短信业务作为广大手机用户使用最多的增值业务之一,日均短信量早已超过10亿条,然而在移动通信业迅速发展的同时,垃圾短信问题成为业界的困扰,垃圾短信问题引起了客户不满,浪费了网络资源,由此带来的用户隐私泄露等问题也引起了相关部门的注意.据<2007年手机短信息调查报告>显示,2007年垃圾短信发送量达到3 538亿条,与2006年相比增加了1 702亿条,增幅达92.7%.垃圾短信有可能会影响产业的进一步发展,有效解决垃圾短信问题是保证产业健康发展的必然选择.     

垃圾短信的系统识别及人工拦截处理

随着无线通信服务功能的不断增强和完善,电信运营商的短信业务在为客户提供便捷信息服务的同时,也为垃圾短信的传播提供了通路。垃圾短信泛滥给社会造成了严重的负面影响,因此必须采取有效的措施进行识别和监控。通过对垃圾短信进行系统设置自动识别及人工审核拦截处理,可以达到治理垃圾短信的目的。     

移动通信领域垃圾短信治理平台的研究与实施探讨

在通信业务快速发展的过程中,手机短信业务逐渐受到人们的青睐,凭借方便、快捷、便宜的优点迅速成为移动现代社会的第五媒体。收集短信服务在使用的过程中,"垃圾短信"的问题逐渐凸显,影响到人们的正常生活和服务市场的稳定。文章站在技术研究的角度,提出了关于垃圾短信治理平台的研究方案。     

多举措防治垃圾短信

2007年以来,各大运营商都通过技术手段对垃圾短信进行了治理,但随着信息技术与信息传播更新迭替,垃圾短信制造者的手段不断更新变化,不断寻找管理上和系统上的漏洞,近期发现这些垃圾短信制造者利用月初＂1日＂系统出账这个特殊时间进行大量垃圾短信发送,造成大量欠费;本文主要针对此问题对＂1日零时＂现象进行有效治理,并通过实现网间垃圾短信治理,优化垃圾短信拦截系统能力等多方面对垃圾短信问题进行了全面有效治理,使垃圾短信得到有效遏制。     

基于信令监控的垃圾短信解决方案探讨

对垃圾短信来源及监控点进行了技术分析,将朴素贝叶斯快速统计引入到垃圾短信过滤中,并基于信令监控提出了垃圾短信解决方案,所提方案能解决多种来源的垃圾短信,对垃圾短信问题治理有一定参考价值。     

短消息网络信息安全研究

对SMS网络(包括固定网和移动网)安全进行了研究,针对垃圾短信的检查和处理,从短信业务系统安全性入手分析短信网络中的安全隐患,进而从技术和监管两方面阐述了反垃圾短信的手段,提出下一步防范垃圾短信问题的建议。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.