Comparison of risk and protective factors associated with smartphone addiction and Internet addiction

Choi, Sam-Wook,Kim, Dai-Jin,Choi, Jung-Seok,Ahn, Heejune,Choi, Eun-Jeung,Song, Won-Young,Kim, Seohee,Youn, Hyunchul Akadémiai Kiadó 2015 JOURNAL OF BEHAVIOURAL ADDICTIONS Vol.4 No.4

<P><B>Background and Aims</B></P><P>Smartphone addiction is a recent concern that has resulted from the dramatic increase in worldwide smartphone use. This study assessed the risk and protective factors associated with smartphone addiction in college students and compared these factors to those linked to Internet addiction.</P><P><B>Methods</B></P><P>College students (<I>N</I> = 448) in South Korea completed the Smartphone Addiction Scale, the Young’s Internet Addiction Test, the Alcohol Use Disorders Identification Test, the Beck Depression Inventory I, the State–Trait Anxiety Inventory (Trait Version), the Character Strengths Test, and the Connor–Davidson Resilience Scale. The data were analyzed using multiple linear regression analyses.</P><P><B>Results</B></P><P>The risk factors for smartphone addiction were female gender, Internet use, alcohol use, and anxiety, while the protective factors were depression and temperance. In contrast, the risk factors for Internet addiction were male gender, smartphone use, anxiety, and wisdom/knowledge, while the protective factor was courage.</P><P><B>Discussion</B></P><P>These differences may result from unique features of smartphones, such as high availability and primary use as a tool for interpersonal relationships.</P><P><B>Conclusions</B></P><P>Our findings will aid clinicians in distinguishing between predictive factors for smartphone and Internet addiction and can consequently be utilized in the prevention and treatment of smartphone addiction.</P>

HPLC를 사용한 쌀 중 잔류농약 동시분석법

최재천,이영자,김소희,최수영,최희주,정성욱,박흥재,김우성 한국환경과학회 2005 한국환경과학회지 Vol.14 No.4

A simple and sensitive analytical method based on RP-HPLC with UV detector(225 nm) and mobile phases using 0.1% phosphoric acid and acetonitrile was developed for simultaneous determination of quinclorac, bentazone, 2,4-D, bensulfuron-methyl, dymuron, capropamide, pencycuron, ethofenprox. This method was resulted in recovery of 78~ 96% with RSD 3.3~7.5%. LODs 0.12~0.84 and LOQs 0.34~1.20 ㎎/L. Calibration curves were linear with r of 0.9995~ 0.9999.

지역사회에서 형성된 사회적 지지와 근로자의 사회심리적 스트레스간의 관련성

임화영,김형수,최영환,장성훈,이건세,정최경희,오원기,최재욱,정춘화 대한산업의학회 2006 대한직업환경의학회지 Vol.18 No.4

Objective: This study was performed to examine the relationship between community-based social support and psychosocial distress in workers. Methods: The study subjects were 596 workers recruited from 11 companies in Chungju city. A structured questionnaire was used to assess sociodemographics, health-related behaviors, job characteristics, job stress, work-based social support, community-based social support and level of psychosocial distress. Results: Hierarchical multiple regression analysis showed that workers with no chronic disease, exercise and sufficient sleep had a higher score of psychosocial distress than those with chronic disease, no exercise, and not enough sleep. Coworker's work-based social support and community-based social support were negatively associated with psychosocial distress. The R square value of total independent variables on psychosocial distress was 0.409, and that of community-based social support on psychosocial distress was 0.052. Conclusion: This study showed that community-based social support served as a protective factor against psychosocial distress in some workers. We recommend the establishment of a worksite stress reduction program in occupational level as well as community-based social support.

남성 알코올 의존 환자의 삶의 질과 정신-사회-영적 특성과의 관계

최삼욱,나란희,김한오,최성빈,최영숙 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.5

Objectives : This study was designed to evaluate the relationship between quality of life (QOL) and psycho-socio-spiritual characteristics in male patients with alcohol dependence. Methods : The sample consisted of 109 men with alcohol dependence defined by DSM-IV criteria. We assessed QOL by the WHO QOL assessment instrument-BREF (WHOQOL) and SmithKline Beecham QOL (SBQOL). Sociodemographic and alcohol related data were collected, and 7 questionnaires were administered : MAST, BDI, STAI, Drinker Inventory of Consequences (DrInC), Scale of Social Support (SSS), Religious Beliefs and Behaviors (RBB) and Spiritual Well-being Scale (SWBS). The correlations between each QOL score and other variables were examined, and stepwise multiple regression analysis was performed. Results : The WHOQOL score positively correlated with education level, SSS (support) and RBB and negatively correlated with MAST, DrInC, BDI, STAI (trait) and SSS (conflict) scores. In stepwise regression analysis, the scores on the STAl and BDI contributed to the score on the WHOOOL. The SBQOL score correlated with the income level, and negatively correlated with BDI and STAI score. STAI score was a weak predictor of SBQOL score. Conclusion : The significant predictors of QOL in patients with alcohol dependence were psychological factors such as anxiety and depression.

태권도 전공 대학생의 정신건강에 관한 연구

최영렬,윤정욱 경희대학교 체육과학연구소 2004 體育學論文集 Vol.32 No.-

This study mainly focuses on finding differences in mental health state between groups which are divided according to the degree of specialty, sex, grade and career. The goal of study is to analyze the level of mental health state in each group and to investigate symptoms in which the differences occur and to find the reason why some groups show different mental health state. As a results, there are some distinctive differences between groups in the degree of specialty and sex. And no differences between groups in grade and career. Sexual identity cause differences between groups in sex, and continuous feeling about victory or defeat of the match bring harmful mental health in effect in high degree of specialty group. Even if physical exercise help to improve and maintain sound mental health state, psychological tension and stress give a negative effect on mental health state.

횡문근융해증과 급성 신부전 및 범발성 혈관내 응고장애를 동반한 열사병 1예

최대은,박수진,권오경,이한규,이영모,이상주,나기량,이강욱,신영태 충남대학교 의학연구소 2003 충남의대잡지 Vol.30 No.2

Heat stroke is a life-threatening illness characterized by an elevated core body temperature that rises above 40% and central nervous system dysfunctions that results in delirium, convulsions, or coma. Heat stroke is subdivided into two forms, classic and exertional. Since strenuous exercise is one of the major exacerbating and precipitating factors, the incidence of exertional heat stroke is high among young adult, especially military personnel undergoing military training. Exertional heat stroke commonly causes rhabdomyolysis, lactic acidosis, acute renal failure, shock and pulmonary edema. We report a case of heat stroke with rhabdomyolysis, acute renal failure, disseminated intravascular coagulopathy(DIC) after strenuous exercise. A 18 year old man was admitted to the hospital because of loss of consciousness. He was a wrestler and he had tried to lose 6kg in weight by jogging and strenuous exercise on that summer day with hot temperature. The development of this illness was favoured by much clothes inappropriate for that environmental condition with a purpose to enhance sweating, and by restricted intake of water and food. On admission, the blood pressure was 80/50mmHg, and body temperature was 39.4℃ with stuporous mentality. Laboratory finding were as follows : in complete blood cell count, hemoglobin was 16.7g/dL and platelet count was 158,000/ mm³. In blood chemistry, AST 1061U/L, ALT 201U/L, BUN 30mg/dL, Cr 2.2mg/dL, LDH 941IU/L, CK 696IU/L were resulted. In arterial blood gas analysis, pH 7.39, pCO₂ 30mmHg pO₂ 86mmHg, HCO₃ 18.4mEq/L, O₂ saturation 96.7% were resulted. In urinalysis, specific gravity 1.025, protein 3+, erythrocyte 2+ were resulted. In brain imaging study, brain CT finding was normal. After appropriate treatments with rapid cooling, hydration and supportive care, he improved with alert mental status. On 2nd hospital day, in laboratory result, thrombocytopenia and coagulopathy were appeared and renal insufficiency was aggravated. So he was treated with platelet concentrate and fresh frosen plasma for DIC, and enough hydration for appropriate urine volume preservation. After all, On 22nd hospital day, he fully recovered and discharged. Nowadays, with followed for some duration, he is wellbeing with no complications.

생물막 공정에서 질소제거효율 향상을 위한 유기성담체의 효용성 검토

최동욱,최영균,김대영,김윤중,정태학 대한상하수도학회 2003 상하수도학회지 Vol.17 No.3

Availability of organic media for improving nitrogen removal efficiency in a biofilter process was studied. Although, aerobic and anoxic phase could be clearly divided during the operation of single-stage biofilter process and nitrification efficiency was about 80%, denitrification efficiency was very low due to depletion of organic substrate in anoxic phase. However, the deficiency could be improved by addition of organic media in anoxic phase from the simulated result. Nitrogen removal efficiency in a biofilter process packed with organic media in anoxic phase was predicted to be 29% higher than that packed with inorganic media. In addition, about 79% of nitrogen removal efficiency could be obtained from a column test using organic media innoculated by activated sludge. Improvement in nitrogen removal efficiency was responsible for organic leaching from the organic media and the leaching rate was 0.21㎎COD/g-org.media/day.

혈관 조영술을 이용한 관동맥,말초혈관,경동맥의 동맥경화성 협착병변의 빈도

최동훈,편욱범,윤영섭,장양수,심원흠 대한순환기학회 1999 Korean Circulation Journal Vol.29 No.9

도금액 조성 및 조업조건이 제품향상에 미치는 영향 연구

최인식,김운수,김우식,김용욱 경희대학교 산학협력기술연구원 1996 산학협력기술연구논문집 Vol.2 No.-

In this study the effect of operation conditions in silver plating process, such as solution concentration, agitation speed and plating time, on the plating thickness and quality was investigated. The plating thickness was significantly influenced by the concentration of silver ion in the plating solution and the plating thickness was increased by the silver ion concentration. However, the plating quality was dominantly affected by the operation conditions of agitation speed and plating time rather than the silver ion concentration. As the agitation speed of the plating solution increased, more uniform plating thickness was obtained and resulted in better quality of product. The thickness and quality of plating improved with increase of the plating time until it reached optimal time, but after then, the quality of plating was markedly dropped even though the thickness of plating increased with increase of plating time.

교육에서의 컴퓨터 활용에 따른 교사의 역할 전환

최욱,고영남 고려대학교 교육문제연구소 1998 敎育問題硏究 Vol.10 No.-