Correlating mobile phone usage and travel behavior – A case study of Harbin,China

Information and communication technologies (ICTs), such as mobile phones and the Internet, are increasingly pervasive in modern society. These technologies provide new resources for spatio-temporal data mining and geographic knowledge discovery. Since the development of ICTs also impacts physical movement of individuals in societies, much of the existing research has focused on examining the correlation between ICT and human mobility. In this paper, we aim to provide a deeper understanding of how usage of mobile phones correlates with individual travel behavior by exploring the correlation between mobile phone call frequencies and three indicators of travel behavior: (1) radius, (2) eccentricity, and (3) entropy. The methodology is applied to a large dataset from Harbin city in China. The statistical analysis indicates a significant correlation between mobile phone usage and all of the three indicators. In addition, we examine and demonstrate how explanatory factors, such as age, gender, social temporal orders and characteristics of the built environment, impact the relationship between mobile phone usage and individual activity behavior.     

Using RSS to support mobile learning based on media richness theory

With the rapid development of mobile technologies, mobile learning has become a new trend in education. A better understanding of how to effectively use communication technologies to improve mobile learning is important. The purpose of this paper is to evaluate the media richness of various message delivery methods in the proposed m-learning environment based on media richness theory. Regarding the implications of the media richness theory, this study has identified four factors to evaluate a content in respect to the media richness among SMS, Email, and RSS: timeliness, richness, accuracy and adaptability. By the repeated-measures one-way ANOVA analysis, the results show that: (1) SMS has better performance than Email and RSS on content timeliness; thus SMS may be appropriate for immediate information delivery such as notifying or reminding of some time-sensitive matters; (2) Email has better performance than SMS and RSS on content richness and so may be applied in exhaustive information delivery; (3) RSS has better performance than SMS and Email on content accuracy and adaptability; thus RSS is more appropriate for supporting various front-end mobile devices to access and present the content in a mobile learning environment. According to the results, this study suggests developer and designer of an m-learning environment could adopt suitable information delivery medium to support the corresponding learning activities in a mobile learning environment; moreover, current general e-learning systems, particularly those intending to provide a mobile learning environment, can take advantage of RSS techniques to support mobile access and achieve the goal of mobile learning anytime and anywhere.     

Predictive text entry methods for mobile phones

Mobile phone networks are increasingly supporting the transmission of textual messages between mobile phones and between mobile phones and other services. This paper describes the current text entry method on mobile phones and describes a new text entry method using a single key-press per letter together with a large dictionary of words for disambiguation. This approach, which is similar to technology recently licensed, independently, to several phone companies, is then extended with automatic word completion. The paper reports the results of initial user tests comparing the text entry methods, analysis of word clashes with the dictionary-based methods and keystroke level modelling of the different input methods.     

Efficient Monitoring Algorithm for Fast News Alerts

Recently, there has been a dramatic increase in the use of XML data to deliver information over the Web. Personal Weblogs, news Web sites, and discussion forums are now publishing RSS feeds for their subscribers to retrieve new postings. As the popularity of personal Weblogs and RSS feeds grows rapidly, RSS aggregation services and blog search engines have appeared, which try to provide a central access point for simpler access and discovery of new content from a large number of diverse RSS sources. In this paper, we study how the RSS aggregation services should monitor the data sources to retrieve new content quickly using minimal resources and to provide its subscribers with fast news alerts. We believe that the change characteristics of RSS sources and the general user access behavior pose distinct requirements that make this task significantly different from the traditional index refresh problem for Web search engines. Our studies on a collection of 10,000 RSS feeds reveal some general characteristics of the RSS feeds and show that, with proper resource allocation and scheduling, the RSS aggregator provides news alerts significantly faster than the best existing approach.     

A Web-based, Offline-able, and Personalized Runtime Environment for executing applications on mobile devices

An increasing number of people use cell phones daily. Users are not only capable of making phone calls, but can also install applications on their mobile phones. When creating mobile applications, developers usually encounter the cross-platform incompatibility problem (for example, iPhone applications cannot be executed on the Android platform). Moreover, because mobile Web browsers have increasingly supported more and more Web-related standards, Web applications are more possible to be executed on different platforms than mobile applications. However, the problem of Web application is that it cannot be executed in offline mode. This study proposes a Web-based platform for executing applications on mobile devices. This platform provides several services for developers such as offline service, content adaptation service, and synchronization service. With the help of the proposed platform, application developers can develop and publish offline Web applications easily with simplified external Web content and synchronization capability.     

基于用户使用移动设备习惯的隐式认证初探

在移动设备(特别是手机)上输入密码是非常麻烦的。随着越来越多的人使用移动设备访问Internet服务,或者从事移动商务活动,人们希望能够简化身份认证操作。为此,提出一种新的身份认证方法——隐式认证,它直接利用用户使用设备的习惯来认证用户,免除了用户输入密码的麻烦;给出了可用于隐式认证的数据及其来源,探讨了可用于隐式认证的具体方法和隐式认证的系统体系结构。所述技术对于隐式认证的进一步研究和应用具有实际意义。     

Diversified users’ satisfaction with advanced mobile phone features

Mobile phones are widely used all over the world, and with their increasing number of value-added features, they are becoming far more than a mere mobile voice communication device. Rather, they provide a powerful platform for accessing information universally. This paper reports a study which scrutinized users’ preference levels with five new mobile phone design features facilitating universal information access through mobile phones: camera, colour screen, voice-activated dialling, Internet browsing, and wireless connectivity (e.g. Bluetooth, infrared, etc.). The survey study involved college students and investigated the degree to which each of the above features impacts the users’ overall satisfaction and enhances the potential of mobile phones to contribute to different aspects of universal access. Our results show that colour screen, voice-activated dialling, and Internet browsing feature can strongly predict users’ satisfaction level, and their preference levels together account for 22.7% of the variance of the users’ overall satisfaction. Users’ satisfaction levels are significantly different between models with colour screen feature and those without, and models with Internet browsing features and those without. Since mobile phone design needs to accommodate the needs and preferences of diversified user groups, the performed study also investigated the difference in users’ preference levels of the five new features for different ethnic groups, and difference in mobile phone owned by different genders. The result indicates that Asian female users in the U.S. market have higher preference level on colour screen feature than Caucasian female users. Significantly higher percentage of male users own phones with camera, Internet browsing, and wireless connectivity features than female users. The empirical study reported in this paper provides a comprehensive picture of how new design features can enhance the mobile phone as a universal access device, and what impact they have brought about. It can also help manufacturers adopt a universal design perspective in view of the differences in preference levels of users with different ethnicity and genders.     

Social networking on smartphones: When mobile phones become addictive

As the penetration of mobile phones in societies increases, there is a large growth in the use of mobile phones especially among the youth. This trend is followed by the fast growth in use of online social networking services (SNS). Extensive use of technology can lead to addiction. This study finds that the use of SNS mobile applications is a significant predictor of mobile addiction. The result also shows that the use of SNS mobile applications is affected by both SNS network size and SNS intensity of the user. This study has implications for academia as well as governmental and non-for-profit organizations regarding the effect of mobile phones on individual’s and public health.     

Adoption of the Internet and WAP-enabled phones in Singapore

The Internet, and more recently mobile phones have seen tremendous growth over the past few years. This paper examines the adoption of the Internet and WAP-enabled mobile phones in Singapore. Specifically, we compare users of WAP-enabled mobile phones and non-WAP-enabled mobile phones in terms of profile of Internet users, Internet activities and issues relating to WAP-enabled mobile phones. The results indicate that short messaging system (SMS) and caller ID are popular functions for mobile phone users. Respondent also use the mobile phone for buying cinema/concert tickets and accessing personalised news. These results provide researchers and practitioners with some insights on the adoption of the Internet and WAP-enabled mobile phones. For researchers, such insights would be useful in understanding the adoption phenomenon, while for practitioners, such insights would provide some basis for adopting certain policies to promote adoption.     

移动智能网与移动互联网的互通研究

移动智能网与移动互联网的互通与结合可以使移动智能网提供丰富的语音/数据综合业务,同时也解决了预付费业务用户无法使用移动互联网的问题。综述了移动智能网与移动互联网互通的研究成果,在此基础上提出了一个完整的互通体系结构,详细介绍了新的业务属性和业务,并分析了基于移动互联网的业务管理和业务控制的计费策略。     

基于Android平台的多分辨率解决方案

近年来,智能手机的功能越来越强大,移动终端应用程序层出不穷,移动互联网改变人们的生活。Android系统是开放手机联盟推出的一款开源的手机操作系统,正是由于其开放性,没有采用Windows Phone7类似的硬件限定标准,目前基于Android系统的机型越来越多,一些硬件指标出现了混乱的局面,其ee最明显的就是屏幕分辨率的问题。如何使开发者的应用程序尽可能多地适应多种分辨率,正是本文要讲述的问题。文章首先介绍Android的系统架构,然后介绍Android平台中分辨率的相关术语,之后重点讲述在开发过程中如何部署资源以及所应遵循的原则,最后给出测试多分辨率兼容性的方法。     

一种基于Android系统的手机僵尸网络

提出一种基于Android系统的手机僵尸网络,设计命令控制信道及手机状态回收方式。分析僵尸手机的恶意行为,给出手机僵尸网络防劫持策略,包括多服务器策略、域名flux技术与身份认证系统,通过RSS及GZIP压缩技术降低僵尸程序消耗的网络流量。对手机僵尸网络的发展趋势及防御手段进行了讨论。     

移动互联网时代数字媒体技术专业建设探讨

随着平板电脑、智能手机的普及,移动互联网时代已经到来。各种交互式媒体、移动应用对数字媒体专业人才培养提出新的挑战。在对常熟理工学院数字媒体技术专业建设分析的基础上,结合移动互联网时代未来的发展方向,提出优化课程体系、调整课程结构、重组课程内容、注重复合型人才培养的改革思路。     

A web browsing system for cellular-phone users based on adaptive presentation

Cellular phones are widely used to access the Web. However, most available Web pages are designed for desktop PCs, and it is inconvenient to browse these large Web pages on a cellular phone with a small screen and poor interfaces. Users who browse a Web page on a cellular phone have to scroll through the whole page to find the desired content, and must then search and scroll within that content in detail to get useful information. This paper describes the design and implementation of a novel Web browsing system for cellular phones. This system includes a Web page overview to reduce scrolling operations when finding objective content within the page. Furthermore, it adaptively presents content according to its characteristics to reduce burdensome operations when searching within content.     

移动互联网及其应用

本文介绍移动互联网的概念及其发展,并针对移动互联网及其终端产品而引发的新一轮互联网浪潮产生的经济及社会价值进行论述。移动互联网随着智能手机及智能终端的普及,随着3G、4G网络的大面积铺开,随着各层次用户数量的大幅提高越来越呈现出蓬勃发展的态势。     

An empirical examination of factors influencing the intention to use mobile payment

With recent advances in mobile technologies, mobile commerce is having an increasingly profound impact on our daily lives, and beginning to offer interesting and advantageous new services. In particular, the mobile payment (m-payment) system has emerged, enabling users to pay for goods and services using their mobile devices (especially mobile phones) wherever they go. Mobile payment is anticipated to enjoy a bright future.     

Content information desired by Chinese users for effective use of information appliances

Many studies have been conducted to determine how to present information on mobile phones in such a way as to enhance usability, but those studies have not considered what information users need for effective decision making. To investigate what users want from mobile phones, we carried out a content preparation study. A questionnaire was constructed based on prior results from website content research, traditional usability studies on consumer electronics, and extensive study on various types of mobile phones; it was completed by 375 Chinese industrial participants. The statistical results revealed nine major factors of mobile phone content: information relating to input/search, functions, operation, multimedia functions, stored files, phone calls, help/service, accessory functions, and messages. Also, users of different ages and genders evidenced different requirements for mobile phone content, especially concerning accessory and multimedia functions. This study suggests guidelines for mobile phone designers targeted at the Chinese market and provides a base for content study of other information appliances.     

The sensor internet at work: Locating everyday items using mobile phones

We present a system for monitoring and locating everyday items using mobile phones. The system is based on phones which are enhanced with the capability to detect electronically tagged objects in their vicinity. It supports various functionalities: On the one hand, phones can store the context in which users leave registered items and thus help to locate them later on. On the other hand, object owners can search for their objects using the infrastructure of mobile phones carried by other users. We describe the design of our object location system and provide an algorithm which can be used to search for lost or misplaced items efficiently by selecting the most suitable sensors based on arbitrary domain knowledge. Furthermore, we demonstrate the practicability of such wide-area searching by means of user-held sensors in a series of simulations complemented by a real-world experiment.     

浅析基于移动终端的高校信息系统规划与建设

黄娟（1984-）,女,福建莆田人,本科,助理实验师,研究方向为计算机。     

Measuring perceived interactivity of mobile advertisements

Interactivity is considered a prominent characteristic of mobile advertising; however, a properly developed tool to measure the concept has not been developed. This study focusses on the development and validation of an instrument for measuring the interactivity perceived by individuals who interact with mobile advertisements on handheld devices. The confirmatory factor analysis results show that perceived interactivity in mobile advertising is comprised of six correlated but distinct constructs: user control, synchronicity, two-way communication, connectedness, playfulness and interpersonal communication. The result from a series of tests and examinations indicated that the multidimensional scale exhibits content validity and discriminant validity. The internal consistency of the scale reaches an acceptable level. The relationship with personal variables was also analysed. Gender, education, monthly income, years using cell phones, monthly cell phone charges, monthly cost for data services on cell phones and previous experiences with mobile advertisements have no influences on respondent interactivity perception with mobile advertisements. But user age is negatively correlated with perceived interactivity and years using the Internet are positively correlated with perceived interactivity. Young people with more Internet experience are more likely to perceive interactivity of mobile advertisements.