短信息服务SMS的开发

在介绍了标准的GSM AT指令集以及详细分析了短信息格式的基础上，给出了短信息编码和解码的实现方法，并结合了无线标准模块(Wireless Stand Module)的使用，提出了一种简单、快捷开发短信息服务(SMS)的方法。     

服务提供商短消息统一网关的研究

短消息网关连接互联网和移动网络,是短消息增值业务的关键。针对服务提供商的需求,提出了服务提供商短消息统一网关的概念,设计了网关的通信模块,简化了服务提供商的接入,统一了业务的接口。     

基于短消息的移动安全通信系统

针对目前移动公网中短信系统存在的不安全因素,提出了一种安全短消息通信系统。然后基于实时主动防护与管控的安全角度,介绍了系统的功能特性和系统的层次架构,并详细阐述了系统的安全策略。最后对该系统进行了实现。     

短信平台的设计与维护

参考中国电信的SMGP协议和有关规范，为服务提供商SP提出了一套完善的，支持大流量通信的，具有开放性、扩展性的短消息服务平台的设计方案和实现方法，对平台的架构、通信处理、业务处理、测试等多方面进行了重点论述，并提出了其它可行的参考解决方案。     

Using short message service to encourage interactivity in the classroom

Interactivity in the classroom is reported to promote a more active learning environment, facilitate the building of learning communities, provide greater feedback for lecturers, and help student motivation. Various definitions of interactivity exist in the literature, alternately focusing on the participants, structure and technology. The PLS TXT UR Thoughts research project builds on existing definitions to define interactivity as a message loop originating from and concluding with the student. The authors chose to introduce mobile phones and short message service (SMS) within the classroom due to the ubiquity of mobile phones among students and the interactive potential of SMS. SMS is a low-threshold application used widely by students to quickly send concise, text-based messages at any time. The research presented involved students sending SMS in real-time, in class, via their personal mobile phones. Using a modem interfacing with customised software to produce SMS files, the lecturer can view the messages and verbally develop the interactive loop with students during class. The SMS are available online after class, allowing interactive loops to further develop via threaded comments.     

Coping behaviors in short message service (SMS)-based disaster alert systems: From the lens of protection motivation theory as elaboration likelihood

Short message service (SMS)-based disaster alert systems are used as critical methods that inform people of natural disasters. This study investigates how two different decision-making routes influence adaptive copings based upon users’ protection motivations. The two important routes, argument quality and source credibility, are presented as focal antecedents of coping adaptiveness. And perceived threat and coping efficacy are tested as a moderator as elaboration likelihood. To achieve these goals, we propose a theoretical framework and analyze survey data to test the hypotheses. The results illustrate that two elaboration likelihood variables show significant moderating roles in the proposed research model.     

Language independent unsupervised learning of short message service dialect

Noise in textual data such as those introduced by multilinguality, misspellings, abbreviations, deletions, phonetic spellings, non-standard transliteration, etc. pose considerable problems for text-mining. Such corruptions are very common in instant messenger and short message service data and they adversely affect off-the-shelf text mining methods. Most techniques address this problem by supervised methods by making use of hand labeled corrections. But they require human generated labels and corrections that are very expensive and time consuming to obtain because of multilinguality and complexity of the corruptions. While we do not champion unsupervised methods over supervised when quality of results is the singular concern, we demonstrate that unsupervised methods can provide cost effective results without the need for expensive human intervention that is necessary to generate a parallel labeled corpora. A generative model based unsupervised technique is presented that maps non-standard words to their corresponding conventional frequent form. A hidden Markov model (HMM) over a “subsequencized” representation of words is used, where a word is represented as a bag of weighted subsequences. The approximate maximum likelihood inference algorithm used is such that the training phase involves clustering over vectors and not the customary and expensive dynamic programming (Baum–Welch algorithm) over sequences that is necessary for HMMs. A principled transformation of maximum likelihood based “central clustering” cost function of Baum–Welch into a “pairwise similarity” based clustering is proposed. This transformation makes it possible to apply “subsequence kernel” based methods that model delete and insert corruptions well. The novelty of this approach lies in that the expensive (Baum–Welch) iterations required for HMM, can be avoided through an approximation of the loglikelihood function and by establishing a connection between the loglikelihood and a pairwise distance. Anecdotal evidence of efficacy is provided on public and proprietary data.     

A usability comparison of three alternative message formats for an SMS banking service

The study reported here compares the usability of three types of message input format: Abbreviations, Numbers and Free-Form as alternatives for a Pull SMS banking service. Participants (N=74) used all three formats to carry out three banking transactions in a repeated measures experiment. The Abbreviations and Numbers versions of the service performed to generally equal levels in all metrics. Free-Form performed the worst as participants took significantly longer to complete tasks and it received significantly lower overall questionnaire and quality scores for satisfaction. The older age group found all three versions in general to be less usable than the younger age group. They took longer on the tasks, had lower completion rates and they also gave each version a lower overall mean satisfaction score.     

基于手机短信控制的智能电饭煲的研究

为了节省人们做饭的时间,吃到健康的米饭,提出一种基于手机短信远程控制的智能电饭煲设计方案,该方案采用机电一体化技术,能够通过手机短信进行远程控制,是一款具有自动量米、淘米、加水和启动煲饭等功能的智能电饭煲。设计中的智能电饭煲自动量米、淘米、放水等机械结构,以HT46RU232型单片机为主控芯片来控制系统硬件,并采用C语言编写控制系统的软件。最后制作了实验样机,并进行了实验测试。结果表明,该智能电饭煲可利用手机来发送设定煲饭时间和饭量,只需要简单的操作,能够实现自动供米、洗米和煲饭,因而具有使用方便、保持米饭营养等优点。     

基于手机短信服务的网上选课系统设计

为使选课系统更加灵活、便于使用,提出了基于手机短信服务的选课方式,对采用这种方式的选课系统进行了功能规划和软硬件设计.这种选课系统应可以通过Web浏览器和手机收发短信进行选课、查询,并具有监控、报表功能.硬件设计着重介绍了利用单片机、M22手机模块和串口扩展芯片GM8125搭建的嵌入式短消息处理器.软件设计着重介绍了基于AT指令和C51语言的手机模块控制程序.这种选课方式作为网上选课方式的补充,受到的限制更少,因而具有较好的应有前景.     

一个基于短消息的移动小额支付平台解决方案

分析了一种基于短消息的移动小额支付平台的解决方案,用于移动电子商务中B2C的小额交易支付。从平台的系统结构、业务流程、接口和系统安全性等方面做了详细的阐述,并给出了目前接入平台的几种移动应用。     

GSM短信息的通信业务性能研究

GSM短信息通信系统提供了一个技术成熟的通信平台,其良好的开放性为用户根据公示的规范、利用集成了标准化协议和硬件接口的模块、以较低的成本快速构建网络控制系统创造了条件.针对此项应用,对短信息的通信业务性能进行了研究,通过短信息的存储转发、漫游、确认机制,分析了它的通信可靠性;介绍了短信息逻辑信道和物理信道的映射,分析了延时特性,提出了确定性和随机性时延的划分;计算了基站的短信息吞吐量;总结了短信息可提供的安全性措施,为控制系统中通信网络的选择、设计提供参考.     

北斗短报文与固定电话语音 通讯服务系统设计

北斗三号系统已于2018年12月完成建设,并开始提供全球服务,北斗短报文应用也即将覆盖全球。由于一些特殊环境并没有北斗系统专用的接收机,配备接收机也很不方便,为了使通信联络正常,基于北斗一号用户机数据接口2.1协议,以STM32系列单片机为数据处理单元,重点从系统硬件、软件两部分入手,对北斗短报文与固定电话语音通讯服务系统进行了研究与设计。该系统利用北斗电话网关实现北斗短报文与固话座机或移动电话的互联互通,解决了在没有接收机的特殊环境或者不使用接收机的情况下,无法进行正常通信联络问题,以及基于北斗短报文通信的安全性、可靠性、局限性问题,同时扩展了北斗短报文的通信应用范围。     

Exploring factors affecting Chinese consumers' usage of short message service for personal communication

Abstract. Short message service (SMS) is very popular in China. While many reports indicate that the SMS market has great potential, little is known about why people adopt SMS. This study uses the technology acceptance model and network externalities to examine the factors influencing the adoption of SMS for personal communication in China. Using data collected from 262 mobile phone users, we find that perceived usefulness, perceived enjoyment and perceived service cost affect SMS use. Perceived network externalities also contribute to higher perceived usefulness and perceived ease of use and affect SMS adoption. The results provide insight to SMS marketing strategies.     

基于短消息平台的气象卫星业务维护管理系统

为满足静止气象卫星地面应用系统的运行管理需求,保证业务系统的高可靠性和维护响应的高时效性,设计了一套基于短消息平台的业务维护管理系统。该系统由短消息平台、实时业务监测和自动维护管理三部分组成,能够实时监测多套卫星系统的业务关键点,及时发现业务故障和特殊事件,利用短消息平台实现消息的集中管理和即时发送,同时具备故障策略管理、维护调度管理和自动化维护响应等功能。实施效果表明该系统具备良好的适用性和可扩展性,能有效减轻维护管理人员的工作压力,为高时效和高可靠要求的大型系统维护管理工作提供有效的技术手段。     

Enhancing nursing students' medication knowledge: The effect of learning materials delivered by short message service

The aim of this study was to evaluate the effectiveness of using mobile phone short message service (SMS) to enhance knowledge of medications among nursing students. A quasi-experimental design was used. A convenience sample of 111 nursing students who were taking a pharmacology course at a university in southern Taiwan received an invitation to participate. The intervention group received learning materials by SMS twice per day for 10 days. Data were collected from 52 students in the intervention group and 54 students in the comparison group at baseline and at one week, two weeks and four weeks after the intervention. A generalized estimating equation (GEE) was used to determine the effectiveness of the intervention. The findings show a statistically significant difference between the two groups over time in the medication knowledge score. The students in the intervention group reported an above-average satisfaction level with this learning method; students reporting higher levels of satisfaction with the intervention had higher scores on medication knowledge. These results indicate that providing learning materials by SMS can significantly enhance nursing students' medication knowledge.     

Developing a corpus of plagiarised short answers

Plagiarism is widely acknowledged to be a significant and increasing problem for higher education institutions (McCabe 2005; Judge 2008). A wide range of solutions, including several commercial systems, have been proposed to assist the educator in the task of identifying plagiarised work, or even to detect them automatically. Direct comparison of these systems is made difficult by the problems in obtaining genuine examples of plagiarised student work. We describe our initial experiences with constructing a corpus consisting of answers to short questions in which plagiarism has been simulated. This corpus is designed to represent types of plagiarism that are not included in existing corpora and will be a useful addition to the set of resources available for the evaluation of plagiarism detection systems.     

PHILAN: a LAN providing a reliable message service for distributedprocessing

A local area network (LAN) design based on a ring topology is presented which can support both packet-switched and circuit-switched traffic. The packet-switching service is reliable in that the LAN controllers deal with all protocol problems, i.e., medium arbitrations as well as flow and error control. The service can meet real-time constraints, since the performance is stable under high load conditions and the arbitration delays are bounded. Moreover, the processing speed of the LAN controller is independent of the transmission speed, and the speed requirements are such that they can be met by a microprocessor (no need for dedicated hardware to process the information on the fly). Before the design of PHILAN is presented, an analysis is given of the protocol problems that have to be dealt with when establishing a reliable packet-switching service on a LAN     

基于短信模式的农产品交易系统设计与实现

为解决传统农产品交易系统效率低下的问题,提出了一种基于短信模式的新型农产品交易系统.分析了该系统的总体结构,设计了系统的各个功能模块,并利用Cookie实现了用户跨子域单点登录.重点介绍了3种可选的短信模式实现方法,包括直接接入运营商网络,GSM Modem部署、调用现有的Web Service接口,比较了这3种实现方法的优缺点,最后选择GSM Modem部署短信模块.实验结果表明,该系统实现了手机与农产品交易系统的双向通讯,有利于提高农产品交易的效率.