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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
221

A Study of Internet Addiction and Self-Concept on Elementary School Students

Chen, Wen-Ju 15 June 2006 (has links)
A Study of Internet Addiction and Self-Concept on Elementary School Students Abstract The purposes of this study are to understand the present situation of elementary school students' Internet behavior, Internet addiction and self-concept, and to analyze the correlations among these three above-mentioned variables. The study is carried out through literature reviews, case surveys and interviews. The subjects are the 5th and 6th grade students at elementary schools in Kaohsiung City. By cluster sampling, the researcher sends out 1112 copies of questionnaire, and receives 1052 valid copies. The collected data are analyzed in the form of descriptive statistics, t-test, one¡Vway ANOVA, and Pearson's product-moment correlation. The top 5% of the Internet addition scores of the samples are interviewed in groups. The major findings of this study are as follows: 1. Family is the major factor that affects elementary school students' Internet behavior and Internet addiction. 2. Virtual interactive Internet activity may easily lead to Internet addiction. 3. In different aspects, elementary school students' self-conception varies in results. 4. Students who spend most of time surfing or e-mailing have better self-concept performance than the others. 5. The more obvious the tendency toward Internet addiction is, the higher mental ego the self-concept shows. 6. The more obvious the tendency toward Internet addiction is, the lower ability-ego and physical ego the self-concept shows. According to these results, some suggestions are presented to educational institutions, educators, counselors and parents. It is expected that understanding the relations between Internet addiction and self-concept of elementary school students, can facilitate to shape appropriate attitude toward Internet, to develop students' self-concept, and to improve students' adaptation to their lives. Keyword: Internet behavior, Internet addiction, self-concept
222

Internet Addiction Disorder of Adolescents¡GA System Dynamics Approach

Tu, Jui-lin 29 July 2008 (has links)
The fast rise of Internet broadens students¡¦ ways of learning and their views; however, there is possibility that improper Internet use will result in problems of Internet addiction. Reviewing the literature about Internet addiction, we can find that many studies were carried quantitatively by using a questionnaire survey to examine and explain the relationships among related variables and their intensity and then apply regression analysis and characteristic equation to find out the forecast of Internet addiction. These studies truly not only helped the academia understand the factors involved in Internet addiction but also offered reference materials for preventing and improving the problems. Nevertheless, there were some limits in these quantitative studies. For example, it is hard to understand the causal relationship among the factors. Also, one-way linear inference ignored the feedback behaviors from Internet addiction toward related factors and fell into one-way think mode. Internet addiction is indeed a mental problem and involves complicated and obscure factors, which usually could be cause and effect of each other. This study aimed to compensate for the loss of dynamic complexity in all kinds of Internet addiction modes in the literature by reviewing important literature, inducing and generalizing dangerous factors and effects, employing system dynamics to construct the dynamic mode of Internet addiction, and applying the picture of causal feedback and the mode of math to see through the structure of movement behind and the interaction among the factors. This study showed five main findings. First, hiding oneself in the Internet world, which could not reduce pressure, only helped obtain a temporary sense of achievement but resulted in severe outcomes, such as the problem of time management and a vicious circle of interpersonal relationship and schoolwork pressure produced by Internet addiction. Second, ¡§withdrawal symptoms¡¨ and ¡§a sense of achievement obtained on the Internet¡¨ were leading indicators for Internet addiction. Third, limiting the amount of time of surfing on the Internet and slackening withdrawal symptoms were temporary solutions to the problem at a later period. Moreover, there was a certain correlation among the critical points of value of withdrawal symptoms, limiting the amount of time of surfing on the Internet, and improving the timing. Fourth, only facing the problem was the ultimate solution to Internet addiction. Finally, the problem of Internet addiction was actually a transformed version of archetype brought up in the book ¡§The Fifth Discipline.¡¨
223

Activity-based anorexia in female rats

Dixon, Deann. Eckel, Lisa. January 2003 (has links)
Thesis (M.S.)--Florida State University, 2003. / Advisor: Dr. Lisa Eckel, Florida State University, College of Arts and Sciences, Dept. of Psychology. Title and description from dissertation home page (viewed Apr. 7, 2004). Includes bibliographical references.
224

Internet usage of college students and relationship to psychopathology and addiction symptomatology /

McGlinchey, Joseph B. January 2003 (has links)
Thesis (Ph. D.)--University of Washington, 2003. / Vita. Includes bibliographical references (leaves 105-111).
225

Why addicts relapse and its implications for treatment.

Wong, Man-tai, James, January 1900 (has links)
Thesis (M.S.W.)--University of Hong Kong, 1979.
226

Medial prefrontal cortical extracellular dopamine responses after acutely experimenter-administered or orally self-administered ethanol

Schier, Christina Joanne 11 November 2013 (has links)
Dopamine signaling in the prefrontal cortex is thought to play a role in ethanol abuse. However, little is known about how ethanol affects dopamine signaling in the region. There are a few rodent studies regarding the matter, but both the pharmacological effects of ethanol and the effects of self-administered ethanol on extracellular dopamine in the medial prefrontal cortex remain unclear. The goal of the studies conducted for this dissertation is to clarify these relationships. To accomplish this, we monitored both dialysate dopamine and ethanol concentrations in the medial prefrontal cortex of Long Evans rats while an experimenter administered or a rat operantly self-administered ethanol. In naïve rats, dopamine dose-dependently increased after the intravenous infusions of a 10% ethanol solution, while no changes were noted after saline infusions. In rats trained to orally self-administer drinking solutions, dopamine transiently increased at the initiation of consumption in both ethanol-plus-sucrose- and sucrose-solution-consuming rats. Dopamine concentrations remained significantly elevated for the entire 21-minute drinking period in the ethanol-plus-sucrose-consuming group and for the first seven minutes of the drink period in the sucrose-consuming group. Additionally, in the ethanol-plus-sucrose-consuming group, dialysate ethanol concentrations were lowest at the initiation of drinking and then slowly increased, peaking 35 minutes after drinking commenced. Taken together, these data suggest that the mesocortical dopamine system is responsive to acute, intravenous and repeatedly, orally, self-administered ethanol. It appears that direct pharmacological effects of ethanol were responsible for the dopamine increase after acute, ethanol administration. Furthermore, while is it possible that the direct pharmacological effects of ethanol also bolstered the dopamine response seen after ethanol self-administration, we cannot firmly conclude by what mechanism ethanol elicited the differences. Overall, our clarifying and novel results support a role for the mesocortical dopamine system in ethanol abuse, which deserves continued investigation. In addition to completing the two aforementioned data studies, we also published the methods we use to monitor dialysate ethanol concentrations, in a specific brain region, during ethanol self-administration in a video-methods journal. The methods are presented in both a detailed written protocol, as well as a video demonstrating how to perform the procedures. / text
227

Options for drug addicts: a comparision of different treatment programs

Kwong, Hon-fai, Alfred., 鄺漢暉. January 2010 (has links)
published_or_final_version / Public Health / Master / Master of Public Health
228

Differential regulation of Ca²⁺ signals in dopamine neurons: a potential mechanism for neuroadaptive changes underlying drug addiction

Cui, Guohong 28 August 2008 (has links)
Not available / text
229

Differential regulation of Ca²⁺ signals in dopamine neurons : a potential mechanism for neuroadaptive changes underlying drug addiction

Cui, Guohong, 1974- 18 August 2011 (has links)
Not available / text
230

Narcotic addiction as related to youthful delinquency; an examination of contributing factors and remedial measures

Sklar, Sam, 1905- January 1954 (has links)
No description available.

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