Longitudinal Structural Equation Modeling of Internet Game and Aggression in Children

This study aimed to identify the effects of Internet game on levels of aggression in children in the context of individual, familial, and social environments. The subjects were 2844 fourth graders participated in the Korean Youth Panel Survey between 2004 and 2008. Internet game use, the levels of aggression, self-esteem, self-control, stress, depression, attachment to parents, parental control, attachment to teachers, and attachment to peers were measured by 5-point Likert scales. The result showed that gender was the most effective factor influencing the initial level of, the rate of changes, an increase or decrease in the rate of changes in Internet game use and levels of aggression. Boys showed higher levels of Internet game use and aggression than girls. Children with higher self-esteem, self-control and lower stress and depression showed lower levels of Internet game use and aggression. The levels of Internet game use at fourth grade was positively correlated with later increase in the levels of aggression. Also, the faster increase in Internet game use caused faster increase in the levels of aggression later. Based on the results, preventive measures such as limiting the opportunities to access Internet games might be worth to decrease the aggressive behaviors among children.

Excessive participation in on-line internet action games by two American teenagers: Case report, description of extent of overuse, and adverse consequences

In the past 15 years, there have been more than 40 articles in the medical literature about excessive participation in on-line internet action games by adolescents and young adults. The following case reports provide detailed information on two boys, ages 16 and 20 years respectively, who are compulsive and enthusiastic internet gamers, to the exclusion of family communication, school activities, academic performance, participation in sports and dating. They have not mastered any of the usual goals of adolescent development.

Internet Gaming Disorder and Mental Health of Children in China:A Latent Profile Analysis

In recent years,speculation of an increase in Internet Gaming Disorder(IGD)has surfaced with the growing popularity of internet gaming among Chinese children and adolescents.The detrimental impact of IGD on mental health cannot be denied,even though only a small portion of the screen-dependent population exhibits psychopathological and behavioral symptoms.The present study aimed to explore a latent profile analysis(LPA)of Internet Gaming Disorder on the mental health of Chinese school students.The data were collected from a sample of 1005 Chinese school students(49.8%male;age M=13.32,SD=1.34 years)using a paper-pencil survey through convenience sampling.LPA explored three latent profiles of internet gamers:regular gamers(62.4%),moderate gamers(28.1%),and probable disordered gamers(9.4%).Results showed that the probable disordered gamers had significantly higher levels of depression,anxiety,emotional and conduct problems,hyperactivity,and peer problem symptoms as well as lower life satisfaction,and pro-social symptoms compared to regular and moderate gamers(p<0.05).This study would be helpful to mental health professionals in designing interventions for gamers who present IGD symptoms.Future longitudinal studies should also be undertaken to assess whether mental health worsens for probable disordered gamers.

Parental Psychological Control and Internet Gaming Disorder Tendency:A Moderated Mediation Model of Core Self-Evaluation and Intentional Self-Regulation

Internet gaming disorder(IGD)among junior high school students is an increasingly prominent mental health concern.It is important to look for influences behind internet gaming disorder tendency(IGDT)in the junior high school student population.The present study aimed to reveal the explanatory mechanisms underlying the association between parental psychological control(PPC)and internet gaming disorder tendency among junior high school students by testing the mediating role of core self-evaluation(CSE)and the moderating role of intentional self-regulation(ISR).Participants in present study were 735 Chinese junior high school students who completed offline self-report questionnaires on parental psychological control,core self-evaluation,intentional self-regulation,and Internet gaming disorder tendency.Analyses were conducted via mediation and moderated mediation.The results showed that:(1)Parental psychological control was positively related to junior high school students’Internet gaming disorder tendency.Core self-evaluation,and intentional self-regulation were negatively related to junior high school students’Internet gaming disorder tendency,respectively.(2)Core self-evaluation partially mediated the relationship between parental psychological control and junior high school students’Internet gaming disorder tendency.(3)Intentional self-regulation moderated the association between parental psychological control and Internet gaming disorder tendency,as well as the relationships between parental psychological control and core self-evaluation and core self-evaluation and Internet gaming disorder tendency in the mediated model.Based on these findings,we believe that there is a need to weaken parental psychological control,strengthen junior high school students’core self-evaluation and intentional self-regulation,and to recognize the important role of parents as well as their children’s personal positive traits in the healthy development of junior high school students.

Research of Internet Trust Based on the Game Theory

This paper analyses adverse selection by signalingmodel and imcomplete information static game modelafter the review of Internet trust. The results showthat establishing credit grades system, decreasingcost differences of Internet goods, increasing Internetmerchants participating in marking a price, reducingmerchants’ cost, concentrating purchase can improveInternet trust. The theoretical bias is provided for theresearch of trust in Internet.

基于博弈理论的Internet QoS评估的研究

Internet Qos(服务质量)评估是多学科领域的研究问题,本文从博弈理论的视角,基于多项罗吉特(MNL) 模型提出了综合考虑服务质量指标和价格因素的Internet QoS评估机制。采用MNL建模用户的选择行为,同时将各个业务类表示为相对独立的竞争实体,每个业务类最大化自己的效用。通过基于非协作博弈理论的分析,论证了各个业务类的QoS指标和价格之间存在均衡,并通过数值分析进行了验证。

Chinese Online Game Industry in Institutional “Separatism”

Through this status quo analysis of China's online game industry,it is not difficult to see that sports in the whole chain of online game industry are not at the core.So,what will sport in this "separatist war" play,or how much of its share of space.

The Ascendant Situation of Online Games Industry

This paper uses literature and data, introduces the ascendant situation of online games industry in brief, outlines the construction status of China's online games industry, comes out with the institutional "separatism" status, analyzes the role of sports field in the institutional "separatism", induces some necessary reflection, and looks to "e-sport" prospects in sports field.

Internet addiction and problematic Internet use: A systematic review of clinical research

AIM: To provide a comprehensive overview of clinical studies on the clinical picture of Internet-use related addictions from a holistic perspective. A literature search was conducted using the database Web of Science.METHODS: Over the last 15 years, the number of Internet users has increased by 1000%, and at the same time, research on addictive Internet use has proliferated. Internet addiction has not yet been understood very well, and research on its etiology and natural history is still in its infancy. In 2013, the American Psychiatric Association included Internet Gaming Disorder in the appendix of the updated version of the Diagnostic and Statistical Manual for Mental Disorders(DSM-5) as condition that requires further research prior to official inclusion in the main manual, with important repercussions for research and treatment. To date, reviews have focused on clinical and treatment studies of Internet addiction and Internet Gaming Disorder. This arguably limits the analysis to a specific diagnosis of a potential disorder that has not yet been officially recognised in the Western world, rather than a comprehensive and inclusive investigation of Internet-use related addictions(including problematic Internet use) more generally. RESULTS: The systematic literature review identified a total of 46 relevant studies. The included studies used clinical samples, and focused on characteristics of treatment seekers and online addiction treatment. Four main types of clinical research studies were identified, namely research involving(1) treatment seeker characteristics;(2) psychopharmacotherapy;(3) psychological therapy; and(4) combined treatment. CONCLUSION: A consensus regarding diagnostic criteria and measures is needed to improve reliability across studies and to develop effective and efficient treatment approaches for treatment seekers.

Functional magnetic resonance imaging of internet addiction in young adults

AIM: To report the results of functional magnetic resonance imaging(f MRI) studies pertaining internet addiction disorder(IAD) in young adults.METHODS: We conducted a systematic review on Pub Med, focusing our attention on f MRI studies involving adult IAD patients, free from any comorbid psychiatric condition. The following search words were used, both alone and in combination: f MRI, internet addiction, internet dependence, functional neuroimaging. The search was conducted on April 20^(th), 2015 and yielded 58 records. Inclusion criteria were the following: Articles written in English, patients' age ≥ 18 years, patients affected by IAD, studies providing f MRI results during resting state or cognitive/emotional paradigms. Structural MRI studies, functional imaging techniques other than f MRI, studies involving adolescents, patients with comorbid psychiatric, neurological or medical conditions were excluded. By reading titles and abstracts, we excluded 30 records. By reading the full texts of the 28 remaining articles, we identified 18 papers meeting our inclusion criteria and therefore included in the qualitative synthesis.RESULTS: We found 18 studies fulfilling our inclusion criteria, 17 of them conducted in Asia, and including a total number of 666 tested subjects. The included studies reported data acquired during resting state or different paradigms, such as cue-reactivity, guessing or cognitive control tasks. The enrolled patients were usually males(95.4%) and very young(21-25 years). The most represented IAD subtype, reported in more than 85% of patients, was the internet gaming disorder, or videogame addiction. In the resting state studies, the more relevant abnormalities were localized in the superior temporal gyrus, limbic, medial frontal and parietal regions. When analyzing the task related fmri studies, we found that less than half of the papers reported behavioral differences between patients and normal controls, but all of them found significant differences in cortical and subcortical brain regions involved in cognitive control and reward processing: Orbitofrontal cortex, insula, anterior and posterior cingulate cortex, temporal and parietal regions, brain stem and caudate nucleus.CONCLUSION: IAD may seriously affect young adults' brain functions. It needs to be studied more in depth to provide a clear diagnosis and an adequate treatment.

Decreased frontal lobe function in people with Internet addiction disorder

In our previous studies, we showed that frontal lobe and brainstem functions were abnormal in online game addicts. In this study, 14 students with Internet addiction disorder and 14 matched healthy controls underwent proton-magnetic resonance spectroscopy to measure cerebral function. Results demonstrated that the ratio of N-acetylaspartate to creatine decreased, but the ratio of cho- line-containing compounds to creatine increased in the bilateral frontal lobe white matter in people with Internet addiction disorder. However, these ratios were mostly unaltered in the brainstem, suggesting that frontal lobe function decreases in people with Internet addiction disorder.

A Scientometric Analysis and Critical Review of Internet Gaming Disorder Behaviours

There are increasing concerns about internet gaming disorder (IGD). No review of existing studies has systematicallyanalyzed and visualized the trends of IGD and those early identification of symptoms related to IGD behaviors.This critical review focuses on the emerging trends for early identification of symptoms related to IGDbehaviors in papers published in Web of Science Core Collection from 2009 to 2021 by scientometric analysisand critical review. Scientometric data analysis technique includes co-occurrence analysis, cluster analysis andburst analysis of authors, countries, keywords and co-citation to visualize those contributing and associated factorsto develop IGD behaviors and their relationships to mental-emotional symptoms. About 81.8% of the paperswere published in the following countries: United States, United Kingdom, Australia, China and South Korea. Thetop co-occurrence keywords were ‘children’, ‘depression’, ‘anxiety’ and ‘attention deficit hyperactivity disorder(ADHD)’, ‘scale’, identifying the population, characteristics and commonly used assessment tools that are susceptibleto certain symptoms relating to IGD of which influencing factors facilitate the understanding of the associationof sociodemographic characteristics. The main emerging topics were identified in this critical review afterconducted the scientometric analysis. The results identified five topics: game impulse, motivation, evaluationscale, mediating effects and diagnostic criteria. This study provides an overview of the research trends on theidentity and development of the IGD field of study.

The Analysis of Edge Entrance Pattern of Internet Services and Its Influences

New concept of'edge entrance'is put forward anda new analyzing framework of'edge entrance pattern'is established from the perspective of economicsthrough studying the technologic nature of Internetsystem.Based on this framework and under differentmarket structures,sequential game models are builtand Internet services are taken as the typical objectsto analyze the phenomenon of edge entrance.Theinfluences of edge entrance of Internet services aresummarized finally and the conclusions show thatInternet services can integrate from edge intomainstream,apart from the driving forces from technologyand market demands,'edge'attribute is alsoone of the main reasons.

网络游戏成瘾患者脑功能异常静息态功能磁共振成像研究

目的采用局部一致性(regional homogeneity,ReHo)和功能连接(functional connectivity,FC)相结合的方法探究网络游戏成瘾(Internet gaming disorder,IGD)患者静息状态下的脑局部固有连接的改变。材料与方法对44例IGD患者和49例年龄、性别、受教育年限相匹配的健康对照者进行静息态功能磁共振成像(resting state-functional magnetic resonance imaging,rs-fMRI)检查。计算并比较两组的ReHo值,以检测IGD患者脑内局部连接的改变;以ReHo值异常的脑区进行功能连接,以得到不同脑区间连接性的改变。采用网络成瘾测试(Internet Addiction Test,IAT)评估IGD的严重程度。Pearson相关分析用于评估具有ReHo改变的脑区域与IAT评分之间的关系。结果IGD组双侧内侧额上回、双侧背外侧额上回、左侧辅助运动区、右侧额中回ReHo增加;左侧枕下回、左侧枕中回、左侧舌回、左侧距状裂周围皮层、左侧梭状回、左侧颞上回以及左侧小脑ReHo值减低(体素水平P<0.005,团块水平P<0.05,高斯随机场校正)。IGD组右侧背外侧额上回与右侧额上回、双侧辅助运动区、右侧中央前回的功能连接性增加(体素水平P<0.005,团块水平P<0.05,高斯随机场校正)。此外,左侧距状裂周围皮层ReHo值与IAT评分呈负相关(r=-0.340,P=0.024)。结论在前额叶皮层、颞枕叶皮层局部连接发生改变,可能表明IGD的认知控制和奖励处理以及视觉、听觉网络已受到影响。此外,左侧距状裂周围皮层ReHo值与IAT评分呈负相关,可能为IGD的神经病理机制提供新的认识。

Current Status and Trend of Internet and E-Commerce Market in Korea

After the remarkable increase of Internet users and broadband Internet subscribers at the end of the 20th century, the size of Korean Internet and e-commerce market steadily increased but the growth rate has been either stagnant or decreased. Trends of Korean Internet and e-commerce market are summarized in this paper the trends on Internet usage are introduced. Trends of online games, blogs and wireless Internet are introduced. The trends of Korean Internet market may have implications for China and Japan.

工业互联网背景下高技术船舶企业融通创新演化研究——基于政府干预视角

构建工业互联网背景下地方政府、高技术船舶龙头企业及中小企业三方融通创新演化博弈模型,运用演化博弈理论分析三方稳定策略的博弈过程,探究政府干预和主体意愿对理想条件下系统演化的影响。结果表明:地方政府利用意义沟通、创新补贴、税收等干预手段能够明显加快高技术船舶龙头企业与中小企业参与融通创新的步伐,但过高的创新支持成本会加重政府负担,导致政府选择懒政;高技术船舶龙头企业与中小企业初始参与意愿较低时能够促使地方政府实施干预,但伴随两者意愿升高,地方政府是否干预受自身收益影响程度更大;高技术船舶龙头企业和中小企业参与融通创新演化速率均与其余主体初始意愿正相关。

大学生特质性心流与网络游戏成瘾的关系:生命意义感和生活满意度的链式中介作用

目的 探讨特质性心流与大学生网络游戏成瘾的关系,以及生命意义感和生活满意度在其中的中介作用。方法 采用方便抽样的方法,使用简版特质流畅量表、生命意义感量表、生活满意度量表和网络游戏成瘾问卷对广州市某高校2 770名大学生进行调查。分析各变量间的关系及其相关的中介作用。结果 特质性心流、生命意义感和生活满意度两两之间均呈显著正相关,特质性心流、生命意义感、生活满意度与网络游戏成瘾呈显著负相关。特质性心流对网络游戏成瘾的直接效应显著,也可分别通过生命意义感和生活满意度的独立中介作用以及两者的链式中介效应对网络游戏成瘾产生影响。结论 大学生特质性心流可通过直接作用以及生命意义感和生活满意度的链式中介作用,降低网络游戏成瘾的风险。

考虑政府参与的区域能源互联网协同演化研究

区域能源互联网将为“双碳”目标的实现提供安全经济的保障,聚焦其市场建设中存在的市场体系不完善、运行机制不健全等问题,构建了能源产品交易者、第三方服务商和能源互联网平台的三方市场主体演化博弈模型,分情景分析了能源互联网市场建设不同阶段的主体均衡策略,初期存在市场失灵需要引入政府监管,待市场机制完善后,政府仅充当“守夜人”即可实现市场的稳定均衡。研究发现:第一,在REI市场建设初期,交易者和服务商容易存在损人利己的机会主义行为,需要政府通过REI平台发挥监管职能;进入成熟期后,主体间的良性合作无需政府监管便可实现系统稳定均衡,并产生社会正外部效应。第二,主体的初始意愿较低时往往需要平台起到示范作用刺激均衡实现;平台通过政府激励和处罚发挥监管职能,适当的政府激励和较强的处罚力度能够刺激均衡实现。第三,平台可以通过控制搭便车收益来抑制市场中的机会主义行为,促进博弈系统实现理想均衡。

车联网中基于三方Stackelberg博弈的动态多媒体定价方案

在当前车联网的应用场景下,中继车辆数据转发的积极性低下与存储空间有限,导致用户体验质量(QoE)降低,为此提出基于三方Stackelberg博弈的动态多媒体定价方案.为了激励中继车辆参与转发多媒体内容,提出多媒体内容定价框架,其中中继车辆获得全额佣金后向路侧单元(RSU)支付部分佣金.设计基于Stackelberg博弈的动态定价模型,根据中继车辆、用户车辆与RSU三方的存储空间利用率、内容数据大小和成本因素,建立各自的效用函数,并将其转化为三方四阶段Stackelberg定价模型.通过反向归纳法证明纳什均衡的存在,实现三方之间的动态定价以得到各自最优策略.仿真结果表明,所提方案有效解决了中继车辆存储空间过载问题,并提高了中继车辆积极性,且在提升用户QoE方面较传统方案具有优势.