청소년의 스마트폰 중독과 우울 및 불안과의 관계

김경은,김필송,민주연,박수경,신서인,이지은,정해인,조호정,최정원,최정인 이화여자대학교 간호과학대학 2013 이화간호학회지 Vol.- No.47

Purpose: The purpose of this study was to investigate the relationships between the degree of smart phone addiction among adolescents and their depression and anxiety levels. Method: In this study, 379 high school students were selected using the convenient sampling method. The instruments used for this study were smart phone addiction measure, the CES-D (Center for Epidemiological Studies-Depression Scale), and the STAI (State-Trait Anxiety Inventory). Data were analyzed using the SPSS 20.0 program with descriptive statistics, t-test, ANOVA with Scheffe test, and Pearson’s correlation coefficient. Result: The mean score for smart phone addiction was 40.45±17.27, depression was 36.56±9.58, state anxiety was 44.00±9.61, and trait anxiety was 45.70±9.75. There were significant differences between the degree of smart phone addiction and the following variables: gender (t=-4.953, p<.001), hours of smart phone use per day (F=12.259, p<.001), types of frequently used features (F=3.485, p=.008), and satisfaction level for smart phone (F=5.18, p<.001). There were statistically significant relationships (p<.001) among degree of smart phone addiction, depression level, and state and trait anxiety levels. Conclusion: The results of this study suggested that there was a significant relationship between smart phone addiction and mental health, specifically, depression and anxiety among adolescents. Further research is needed to develop nursing strategies to provide care for adolescents who frequently utilize smart phones.

Ⅰ.Ⅱ.Ⅲ.Ⅳ상한 Converter의 직렬접속 운전에 의한 전원 전류파형 및 역율개선에 관한 연구

정연택,서영수,황락훈 明知大學校 産業技術硏究所 1983 産業技術硏究所論文集 Vol.2 No.-

In this paper, as a method to improve power factor and waveform of AC line current by means of an AC-to-DC converter CONⅠ and CON Ⅱ series connection full bridge converter drive is studied, the basic principle of the operation of the converter is simplified and the feasibility of the conversystem can be proved by experiments. In order to drive CON Ⅰ to lagging and CON Ⅱ to leading this is CON Ⅱ constructed forced commutation converter. By experimental results, the power factor and waveform of AC line current is improved by Ⅰ, Ⅱ, Ⅲ, Ⅳ quadrant converter drive.

처방전달시스템 도입 전 간호사의 컴퓨터 불안요인에 관한 연구

서정아,김연,정영 조선대학교 부설 의학연구소 2002 The Medical Journal of Chosun University Vol.27 No.1

Objectives: This study measures the anxiety of computer use among 250 nurses serving at a university hospital in Kwangju City before the introduction of the prescription delivery system. It examines the factors related to it and the descriptive research was done in order to make nurses play a central role in the development of a hospital computerization system by making them accept tile necessity of education and experience and having a positive attitude. Methods: A questionnaire for data collection was used. The period of survey was 12 days from Jun. 16 to 28, 2001, 224 collected responses from 250 questionnaires are used for data analysis. Research tools developed by Chang(1984) and used by Baek(1992) are used to measure anxiety of computer use and the results mean that the higher the score was, the higher the anxiety was. Conclusion: The respondents showed anxiety above average with scores raging from 52 to 100, and with the average of 71.26. The factors of computer anxiety were 「Rejection」「Self-confidence」「Expectation」「Exciting」 and the total explanation variation was 62.3%. The degree of computer anxiety, based on the general characteristics of subjects 'schooling' (F=2.59, p=.027), 'working dept' (F=2.54, p=.007), 'com use' (F=3.99, p=.000), 'com education' (F=3.85, p=.016), 'com use period' (F=5.34, p=.000) , 'com use frequency' (F=2.11, p=.040), 'wish for computerization' (F=2.05, p=.046) , showed a statistically meaningful difference in anxiety about the computer. The degree of computer anxiety, based on the general characteristics of subjects showed these statistically meaningful differences (1) 'Exciting' (F=2.735, p=.044) of age (2) 'Expectation' (F=2.802, p=.041) of position (3) 'Rejection' (F=-2.161, p=.032) and 'Self-confidence' (F=2.178, p=.030) of com use (4) 'Self-confidence' (F=2.904, p=.004) of com education (5)'Rejection'(F=4.021, p=.000) ,'Self-confidence'(F=4.711, p=.000) and 'Expectation' (F=3.496, p=.016) of com use period (6) 'Rejection' (F=4.033, p=.019) and 'Self-confidence' (F=6.347, p=.002) of com use frequency (7) 'Rejection' (F=4.537, p=.001) and 'Self-confidence' (F=4.898, p=.000) of wish for computerization.

3펄스-2중 콘버어터의 역률 및 고조파 특성

정연택,서영수,김연풍 明知大學校 産業技術硏究所 1986 産業技術硏究所論文集 Vol.5 No.-

In this paper, we combine the lead condensor connected on the side of load with the dual 3-pulse converter which has the intermediate-point interphase reactor in the symmetrical phase displacemental transformer, to improve power factor. For the variation of reactive power variable inductor acts as VAR compensator to reduce harmonics, and to improve power factor and waveform.

두개강내 출혈을 동반한 불응성 특발성 혈소판감소성 자반증의 CYCLOPHOSPHAMIDE 치험 1예

서정철,양태영,최연수,박유환,김완중,허경,정원영,정춘해 朝鮮大學校 附設 醫學硏究所 1993 The Medical Journal of Chosun University Vol.18 No.1

Idiopathic thrombocytopenic purpura(ITP) is an autoimmune bleeding disorder characterized by the development of antibodies to one's own platelets, which are then destroyed by phagocytosis in the spleen and liver. Its clinical manifestations are characterized by bleeding and the most serious complication is hemorrhage into the central nervous system, but which is rarely seen below 1%. In treating IPT, the therapy of first chice is administration of adrenocorticosteroid and r-globuline. If satisfactory results are not obtained, then splenectomy is recommended. If this also proves inadequate, then administration of immunosuppressants is carried out. 16-year-old male was admitted with complaints of left hemiplegia and nasal bleeding. This case may be developed spontaneous intracerebral hemorrhage causing thrombocytopenia and was treated by steroid, r-globuline and splenectomy, but satisfactory results are not obtained. After all, the paient was successfully treated with cyclophosphamide.

入力 力率을 變數로 하는 Var 시스템 運轉

鄭然澤,徐英洙,朴贊烈 明知大學校 産業技術硏究所 1987 産業技術硏究所論文集 Vol.6 No.2

In this paper, the way that input power factor as a control variable is provided as one unit is projected. From the view of practical system, capacitance and TCR reactor are to have internal resistance, therefore, the efficiency and precision of the control decrease. In case that reactive power or reactive current are used as variable, internal resistance loss and control deviation, as much as the reactor of system can not be acuratly dealed and as distortion reactive power, cause an error in reactive power compensation and power*factor improvement. According to this point of view, this paper could provide the unit power factor improvement control by using the input power*factor as a control variable. As a result, the input power factor which has state deviation error of±2[%] of controller can be preserved, and basically, Var system used in this experiment was supposed to compensate the reactive power. So there is little effect on decreasing of harmonics content but quite good result on harmonics suppression is achieved by using the simple first order of high field filter.

임신중 산전 초음파로 진단된 자궁근종의 임상적 고찰

서정호,김윤숙,김대원,이동운,최규연,이정재,이임순 순천향의학연구소 2003 Journal of Soonchunhyang Medical Science Vol.9 No.1

Objectives: To study the clinical manifestations; time, mode of delivery, size of myomas and outcome of pregnancy in cases of myomas that were detected prior to pregnancy or during the antenatal care and after delivery. Methods: We statistically analyzed 76 patients with uterine myomas in pregnancy admitted to Soonchunhyang Seoul Hospital during the period of Jan. 1999 and Dec. 2001. Results: The results are as follows. 1. The mean age of patients in the detected group and undetected group were 32.9 years and 32.3 years, respectively. There was no difference in the proportion of primarity between the detected group(98.2%) and the undetected group(79.6%) 2. The most common type of uterine myoma in both groups was intramural myoma (detected group 94.1% vs undetected group 81.3%). The uterine myomas were most commonly located in the anterior portion and fundus(detected group 52.9% and 23.5% respectively vs undetected group 47.4% and 23.7% respectively) and the proportion was not significantly different between the two groups. Uterine myomas with a diameter of 3cm or more in the detected group were detected by clinical examination and ultrasonogram. Rate of uterine myomas with a diameter of 3cm or more in the detected group is 76.5% and less than 3cm is 54.2% which detected incidentally at delivery. 3. The proportion of term infants were detected group 88.2% vs undetected group 91.5%. 4. The most common indications for cesarean section in both groups were cephalopelvic disproportion and repeated cesarean section (detected group 41.2% and 45.8% respectively vs undetected group 11.8% and 18.6% respectively) and there was no significant difference between the two groups. 5. Secondary pathologic changes in the all myomectomy specimens were degeneration in both groups but there was no necrosis or sarcomatous change. 6. Antenatal complications were preterm labor, premature repture of membranes, spontaneous abortion, malpresentation, and placenta previa. Intrauterine growth retardation and placental abruption were not seen in both groups. Conclusion: Myoma detected by ultrasonogram before or during pregnancy is not a significant implication of pregnancy outcome.

방한 일본 관광객의 한국전통음식 메뉴품질 만족도에 관한 연구

이연정,서윤정,주현식,최수근 한국식생활문화학회 2005 韓國食生活文化學會誌 Vol.20 No.2

This study was performed by questionnaire to investigate satisfaction for the menu quality of Korean traditional food of Japanese tourists. The subjects of this study consisted of 280 Japanese tourists using the Gyeongju and Busan hotel. The results were summarized as follows: 63.9% of the subjects responded that frequency of visiting was 1-2 times a year and 42.1% responded that motivation of visiting was for tour and understanding of korea. Companion with friend scored high as 40.4%, and intention of revisiting was high on 'normal'. On overall satisfaction on korean traditional foods, 'satisfy' scored high as 43.2%. 61.1% of the subjects responded that the taste was the most important factor of food. On frequency of eating, 'over 8 times' scored high as 27.9%, and on motivation of eating, 'with visiting Korea' scored high as 48.2%. On satisfaction for the menu quality of korean traditional food, the highest item was 'taste(3.82 point)' and 'nutrition(3.82 point)', and but 'Japanese mark on menu(2.47 point)', 'Japanese mark on ingredient(2.61 point)' scored low. Overall satisfaction for korean traditional food had an effect on intention of revisiting, and therefore, improving the quality of the traditional food and the strategy for the classification of desires are eamestly requested.

포괄수가제의 진료행태와 행위별수가제와의 진료비 비교분석

김연,서정아,정영 조선대학교 부설 의학연구소 2002 The Medical Journal of Chosun University Vol.27 No.1

Objectives: The purposes of this study were to analyze the quantity of medical services and to identify the factors that create differences in medical costs, medical treatment practices, and the differences in medical costs. Methods: A university hospital which uses the DRG payment system was selected to study. The subjects were the DGRs patients who were discharged from this hospital in the months of January, March, and May of 2000, and January, March, and May of 2001. Data were collected from medical care specification sheets, medical treatment records, and medical service charges. Results: 1. The distribution of subjects in each disease group was 22 DRGs in 8 disease groups among the current 41 DRGs in 8 disease groups. 2. On the medical treatment practices the following 6 factors were identified as significant factors of total costs of DRG: injection costs, operation and delivery costs, bed costs, medication &rescription costs, anesthetic costs and radiation costs. However, there were small differences among medical departments. 3. On the share of medical costs, the number of cases for which patients have to pay the costs decreased in 13 DRGs and the number of cases for which the insurance unions have to pay the costs increased in all 4 departments and in all 14 DRGs. 4. In the 3 departments and 11 DRGs the total DRG costs were higher than the costs for FFS. The difference between the total DRG costs and the total FFS costs were decreased in the year 2001 compared to the difference in the year 2000. Conclusion: As a result, the burden of medical costs for patients and their families has decreased. Therefore, extended application DRG in the practice is necessary. considering the decrease of the difference between the total DRG costs and the total FFS costs and the adequacy of the quantity of medical services. The fairness of the costs should be analyzed for patient groups where the FFS costs appeared to be higher than the total DRG costs. Strategies to eliminate the unnecessary medical services to control medical costs are necessary. Moreover, the proper reimbursement strategies are needed to disseminate the DRG- PPS.

抗癌丹을 投與한 大腸癌 患者 83例에 대한 臨床報告

이용연,서상훈,유화승,최우진,조정효,이연월,손창규,조종관 대한한방종양학회 2000 대한한방종양학회지 Vol.6 No.1

Climical studies were carried out 83 cases of patients with colorectal cancer treated bv Hangamdan(抗癌丹) from January lth 1998 to September 30th 2000. The results were summarized as follows; 1. Distribution of those attached by colorectal cancer, by sex, showed that Male is more then Female, by age, showed that the numbber of fifties is majorith. 2. distribution of diagnostic stage, in descending order; stage Ⅲ(53%, top), stagew Ⅵ(45.8%). 3. The effects of maintenance and improvement in the symptoms with traditional oriental therapy(83.3%) and combined treatment of westem and oriental therapy(92.1%)were boserved. The effects of the symptoms were as folows: diarrhea(37.3%),abdominal pain (25.3%), general body weakness(22.9%), nausea(20.5%) and etc. in orders. 4. Analysis of hematology attached by colorectal cancer, maintenance and increasing of WBC(89.9%), RBC(74.7%), Hgb(81.1%), Platelet(92.4%) were Observed. After taken Hangamdan, the satety of the liver and kidney were as follows; maintenance and decreasting of AST(85.9%), ALT(94.8%) , GTP(87.5%), Creatinine(90.9%) were observed. 5. of IL-12 and IFN-λ attached by colorectal cancer, increasing of IL-12(53.3%), IFN-λ(80%) were observedl. 6. Analysis of QOL attached by colorectal cancer, maintenance and improvement of combined treatment of western and oniental therapy(89.6%), traditional oriental therapy(83.3%) were observed. 7. Analysis of survival in patients with Ⅳ stage of colorectal cancer, above 7 months(18.4%), 12 months(65.8%). 8. Analysis of antitumor effects, maintenance of traditional oriental therapy(83.3%) and maintenance and improvement of combined treatment of western and oriental therapy(80.5%) were observed. Analysis of tumor marker attached by colorectal cancer, maintenance and decreasing of CEA(78.8%) were boserved 9. Analysis of curative valuation, maintenance and improvement of traditional oriental therapy(83.3%), combined treatment of westem and oriental therapy(72.7%) were observed.