Evolution of condensed subgroup of political participation based on mobile phone

In this paper, a comprehensive numerical study that investigates the evolutionary process of condensed subgroup in political participation based on mobile phone was carried out, putting forward the conception of “condensed subgroup cardinality” considering that it is a finite Markov chain. Then a mathematical model was constructed which allows us to depict the evolutionary process of condensed subgroup and analyze a public media forum based on mobile phone with accuracy. The numerical result demonstrates the usability of this model in predicting the evolutionary process of virtual condensed subgroup based on mobile phone. Analyses on the evolutionary mechanism of condensed subgroup were also given and finally a preliminary stochastic differential equation was advanced to describe it.     

简析手机取证中的数据提取

近些年来,不法分子利用智能手机实施犯罪时有发生.为有效打击这类犯罪行为,手机取证已成为必不可少的技术.通过手机取证,公安机关从手机中提取数据,然后经分析后形成证据,提取手机数据是手机取证的重要环节.对手机取证进行简要分析,以Android手机为例探讨数据的存储架构和提取方法.     

Mobile phone addiction levels and negative emotions among Chinese young adults: The mediating role of interpersonal problems

This study evaluated the mediating role of interpersonal problems in the link between mobile phone addiction levels and negative emotions among mobile phone addicts and possible-mobile phone addicts respectively. The purpose of this study was to address two gaps in research. First, previous research has revealed that a positive association existed between mobile phone addiction levels and negative emotions, especially among those with interpersonal problems. The present study extended research by exploring the mechanisms underlying these associations. Second, Mobile phone addicts as a particular group has received much attention, however, research concerning the possible mobile phone addicts as another particular group is limited. A total of 1089 young adults in China were surveyed by using cluster sampling. Results showed that compared with nonaddicts, mobile phone addicts or possible mobile phone addicts spent more money and time on mobile phone use and were more vulnerable to have negative emotions. The effects of the possible mobile phone addiction on negative emotions were significant but weaker than those of the mobile phone addiction. Further, interpersonal problem was a significant mediator between mobile phone addiction levels and negative emotions. Findings and their implications are discussed.     

基于手机大数据的动态人口感知

随着通信市场迅速发展和手机的高普及率，利用手机数据研究人类活动和城市规划发展成为可能.本文主要工作是构建了大数据实时处理分析平台，并基于此平台提出了一种利用手机数据感知城市人口分布的方法.通过实验表明，基于手机数据的动态人口感知能够反映实际城市人口分布，对于城市交通监管、公共资源配置优化等方面具有重要意义.     

3G给网安工作带来的新挑战及应对措施

3G时代,手机上网的快速发展,拓宽了信息的传播方式,但是利用手机从事违法犯罪的活动也日益猖獗,对社会的危害性越来越大,公安机关网络保卫、监察工作面临着新的问题和挑战。文章针对3G手机上网的特点,讨论了加强手机网络监管的措施,为维护手机上网的秩序提供参考。     

Personality and self reported mobile phone use

As the mobile phone supports interpersonal interaction, mobile phone use might be a function of personality. This study sought to predict amounts and types of mobile phone use from extraversion, agreeableness, conscientiousness, neuroticism and self-esteem. One hundred and twelve mobile phone owners reported on their use of their mobile phones, and completed the NEO-FFI and the Coopersmith self-esteem inventory. Extraverts reported spending more time calling, and changing ring tone and wallpaper, implying the use of the mobile phone as a means of stimulation. Extraverts and perhaps disagreeable individuals were less likely to value incoming calls. Disagreeable extraverts also reported using the mobile phone more, and spent more time adjusting ringtone/wallpaper. The neurotic, disagreeable, unconscientious and extroverted spent more time messaging using SMS. This study concludes that psychological theory can explain patterns of mobile phone use.     

A model of the relationship between psychological characteristics,mobile phone addiction and use of mobile phones by Taiwanese university female students

While many researches have analyzed the psychological antecedents of mobile phone addiction and mobile phone usage behavior, their relationship with psychological characteristics remains mixed. We investigated the relationship between psychological characteristics, mobile phone addiction and use of mobile phones for 269 Taiwanese female university students who were administered Rosenberg’s self-esteem scale, Lai’s personality inventory, and a mobile phone usage questionnaire and mobile phone addiction scale. The result showing that: (1) social extraversion and anxiety have positive effects on mobile phone addiction, and self-esteem has negative effects on mobile phone addiction. (2) Mobile phone addiction has a positive predictive effect on mobile phone usage behavior. The results of this study identify personal psychological characteristics of Taiwanese female university students which can significantly predict mobile phone addiction; female university students with mobile phone addiction will make more phone calls and send more text messages. These results are discussed and suggestions for future research for school and university students are provided.     

Mobile Social Networks and Social Practice: A Case Study of Dodgeball

A mobile social network system (MSNS) allows groups of friends to be accessed and engaged with from one's mobile phone. Dodgeball is a MSNS that seeks to facilitate social connection and coordination among friends in urban public spaces. Based on a year-long qualitative field study, this article reports on the social and behavioral norms of Dodgeball use. A comparison between social network sites and Dodgeball highlights some of the communicative differences of mobile technology and the Internet. The findings of the study suggest that Dodgeball use can influence the way that informants experience public space and social relations therein. At times Dodgeball can facilitate the creation of third spaces, which are dynamic and itinerant forms of "third places." Additionally, exchanging messages through Dodgeball can lead to social molecularization, whereby active Dodgeball members experience and move through the city in a collective manner.     

Kei-Tying teens: Using mobile phone e-mail to bond, bridge, and break with social ties—a study of Japanese adolescents

This paper examines the extent to which Japanese adolescents use mobile phone e-mail to bond, bridge, and break with their social ties. Although existing literature shows that adolescents use mobile phone e-mail to bond with intimate strong ties, the fluid nature of social networks during adolescence suggests that mobile phone e-mail may also be used to bridge to new ties and to break with old ties. Drawing on a stratified random sample survey of 501 high school students living in Tokyo, we find that mobile phone e-mail is used both to bond and bridge, but not to break with ties. We also find that the intensity with which Japanese adolescents use mobile phone e-mail is more fundamentally a result of bridging than bonding. These findings apply both to typical users and heavy users.     

Mobile phone use while cycling: Incidence and effects on behaviour and safety

The effects of mobile phone use on cycling behaviour were studied. In study 1, the prevalence of mobile phone use while cycling was assessed. In Groningen 2.2% of cyclists were observed talking on their phone and 0.6% were text messaging or entering a phone number. In study 2, accident-involved cyclists responded to a questionnaire. Only 0.5% stated that they were using their phone at the time of the accident. In study 3, participants used a phone while cycling. The content of the conversation was manipulated and participants also had to enter a text message. Data were compared with just cycling and cycling while listening to music. Telephoning coincided with reduced speed, reduced peripheral vision performance and increased risk and mental effort ratings. Text messaging had the largest negative impact on cycling performance. Higher mental workload and lower speed may account for the relatively low number of people calling involved in accidents.

Statement of Relevance: Although perhaps mainly restricted to flat countries with a large proportion of cyclists, mobile phone use while cycling has increased and may be a threat to traffic safety, similar to phone use while driving a car. In this study, the extent of the problem was assessed by observing the proportion of cyclists using mobile phones, sending questionnaires to accident-involved cyclists and an experimental study was conducted on the effects of mobile phone use while cycling.     

基于J2ME的手机掼蛋网络游戏的研究

随着3G时代的到来,以及手机性能的不断提高,手机娱乐休闲的功能日益彰显。使用J2ME作为手机网络游戏的开发平台,结合Servlet技术构建手机掼蛋网络对战游戏,利用多线程实现手机客户端随机接收服务器消息。为了让玩家按服务器发送的顺序接收消息,采用队列进行存储,使消息按队列先进先出顺序供客户端接收。通过实验模拟,达到了设计的效果。     

ICT Capacity as the Investment and Use of ICT: Exploring its Antecedents in Africa

In this paper, we investigate the extent to which economic, human development endowment, political, and population conditions influence information and communication technology (ICT) capacity in African nations using ordinary least squares. We use five variables to measure ICT capacity: ICT expenditure as a percent of GDP (ICTE), ICT expenditure per capita in US dollars (ICTEP), investment in telecoms with private participation (INVTE), Internet users per 100 people (INTUS), and mobile phone subscribers per 1000 people (MOBPS). Unlike ICT adoption and diffusion that focuses on the use of ICT, ICT capacity measures public and private investments in ICT and the use of ICT. The results indicate that ICT capacity of a nation increases with increased (high) corruption index. Further, ICT investment by the private sector depends mainly on human development factors and is not influenced by the perceptions of corruption about a nation. We present theoretical and practical implications of the findings for developing nations in general and African nations in particular.     

Always Connected or Always Distracted? ADHD Symptoms and Social Assurance Explain Problematic Use of Mobile Phone and Multicommunicating

Multicommunicating via mobile phone during face‐to‐face encounters with family and friends was examined with data from an online survey of 432 adults in the US. Multicommunicating was positively associated with problematic mobile phone use and explained by attention deficit/hyperactivity disorder (ADHD) symptoms and a social need to belong. Those with ADHD symptoms were more likely to engage in problematic mobile phone use and frequent multicommunicating. Strong need for social assurance, which involves an “always‐on‐and‐connected” lifestyle through mobile devices, explained problematic mobile phone use and multicommunicating. Need for social assurance also was related to multicommunicating via social connectedness, and this effect was significant among females, but not males. The implications of these findings for future research are discussed.     

The action of looking at a mobile phone display as nonverbal behavior/communication: A theoretical perspective

This study investigates the now-common action of looking at a mobile phone display, thereby offering insight into the present communication situation in an era in which the use of high-performance mobile phones has become ubiquitous. In this study, the action of looking at a mobile phone display is considered nonverbal behavior/communication. This study applies a basic, general model to elucidate the present situation of face-to-face communication in light of the increasing prevalence of social interaction via mobile phone use. The results derived from the model include mobile phone users’ increasing social power and an accumulation of potential discontent in relation to different interpretations. This study concludes that in an era of high-performance mobile phones, the social context in face-to-face communication can be influenced by the act of looking at a mobile phone display.     

A dual-risk model of user adoption of mobile-based smoking cessation support services

This study proposes and validates a dual-risk model of the drivers and inhibitors of the adoption of a mobile e-health application for smoking cessation. This model extends existing approaches for risk taking by accounting for two opposite types of risk: the risk of using the mobile service and risks of not using it, both of which are argued to be instrumental to user decision to use healthcare support technologies. The proposed model was estimated with data collected from 422 smokers and mobile phone users in the UK and Canada. The findings suggest that adoption decisions regarding such a mobile service are driven by intrinsic and extrinsic motivations which channel the effects of the above-mentioned risk assessments on use intentions. This implies that to increase the success of mobile phone use in smoking cessation programmes, perceptions regarding both risks could be targeted.     

3G手机的BREW游戏设计与实现

BREW是美国高通公司为手机的增值应用所提供的一套完整的开发平台。开发人员可以利用BREW平台提供的计算机上的仿真环境进行手机游戏开发,然后通过本地下载或者无线下载装到手机上运行。通过一个游戏实例对在BREW平台上设计和开发3G手机游戏的方法和实现技术进行了分析,包括资源器编辑、程序设计和开发、计算机仿真等过程。     

Are you awake? Mobile phone use after lights out

Night-time mobile phone use has the potential to detract from sleep quality and continuity, resulting in tiredness and impaired psychological function. An on-line survey of the mobile phone habits of 397 adults (M age = 34.45, SD = 13.29) revealed that 75% used a mobile phone after lights out at least once a month, with 12.8% making calls at any time of night. More than 50% of participants reported being woken by the phone use of other people sharing their sleeping space. Using the phone after lights out and a general unwillingness to turn the phone off made a small but significant contribution to the level of tiredness. Tiredness made a significant contribution to DASS scores, with higher levels of tiredness being associated with more depression, anxiety and stress. Objective measures of sleep fragmentation and phone use along with diary recordings of participants’ evaluations of the affective value of each call or text, would be valuable in the exploration of the impact of night time phone use on tiredness and psychological function.     

Problematic Internet and mobile phone use and clinical symptoms in college students: The role of emotional intelligence

This study deals with maladaptive use of the Internet and the mobile phone and its relationship to symptoms of psychological distress and mental disorder, as well as to the possible role of Perceived Emotional Intelligence in this relationship. Three hundred and sixty-five undergraduate university freshmen at Ramon Llull University, Barcelona (Spain), majoring in four different studies (Psychology, Education, Journalism and Broadcasting, and Health Studies) replied to scales assessing the negative consequences of maladaptive use of both the Internet (CERI) and the mobile phone (CERM), a self-report scale on Perceived Emotional Intelligence (TMMS-24), and a clinical instrument to check for complaints related to the presence of psychological distress (Symptom Checklist-90-R; SCL-90-R). Results indicate that psychological distress is related to maladaptive use of both the Internet and the mobile phone; females scored higher than males on the mobile phone questionnaire, showing more negative consequences of its maladaptive use. With respect to major study, students of Journalism and Broadcasting showed a more maladaptive pattern of Internet use than students of other majors. The components of Perceived Emotional Intelligence contributed to the explanation of the variance of the general indicators of psychological distress, but to a lesser degree than maladaptive use of Internet and mobile phone.     

Understanding mass participatory pervasive computing systems for environmental campaigns

Participate was a 3-year collaboration between industry and academia to explore how mobile, Web and broadcast technologies could combine to deliver environmental campaigns. In a series of pilot projects, schools used mobile sensors to enhance science learning; visitors to an ecological attraction employed mobile phones to access and generate locative media; and the public played a mobile phone game that challenged their environmental behaviours. Key elements of these were carried forward into an integrated trial in which participants were assigned a series of environmental missions as part of an overarching narrative that was delivered across mobile, broadcast and Web platforms. These experiences use a three-layered structure for campaigns that draw on experts, local groups and the general public, who engage through a combination of playful characterisation and social networking.     

Keeping in constant touch: The predictors of young Australians’ mobile phone involvement

Little is known about the psychological underpinnings of young people’s mobile phone behaviour. In the present research, 292 young Australians, aged 16-24 years, completed an online survey assessing the effects of self-identity, in-group norm, the need to belong, and self-esteem on their frequency of mobile phone use and mobile phone involvement, conceptualised as people’s degree of cognitive and behavioural association with their mobile phone. Structural equation modelling revealed that age (younger) and self-identity significantly predicted the frequency of mobile phone use. In contrast, age (younger), gender (female), self-identity and in-group norm predicted young people’s mobile phone involvement. Neither self-esteem nor the need to belong significantly predicted mobile phone behaviour. The present study contributes to our understanding of this phenomenon and provides an indication of the characteristics of young people who may become highly involved with their mobile phone.