청소년의 인터넷 중독 정도에 따른 정신과적 공존질환 및 행동 양상에 관한 연구

이준영(June-Young Lee),박이진(E-Jin Park),조근호(Keun-Ho Joe),채숙희(Suk-Hi Chai),김성벽(Sung-Byuk Kim),이창욱(Chang-Uk Lee),김대진(Dai-Jin Kim) 한국중독정신의학회 2010 중독정신의학 Vol.14 No.1

Objectives:This study aimed to clarify the differences in psychiatric comorbidities and, behavioral patterns correlating with the severity of Internet addiction in adolescents. Methods:We assessed 321 adolescents recruited from an Internet rescue school, psychiatric outpatients, and 4 schools in Seoul and Gyeonggido. We divided them into a non-addicted group, a potential-risk group, and a high-risk group according to Young’s Internet Addiction Test (IAT). We evaluated their psychiatric comorbidities and behavioral patterns via psychiatric clinical interview, the Children’s Depression Inventory (CDI), the State-Trait Anxiety Inventory (STAI), and a self-report questionnaire about behavioral pat-terns. Results:There were significant differences in CDI and STAI scores among the 3 groups. The IAT, CDI, and STAI scores correlated positively with each other. There were differences in psychiatric comorbidity distributions between the potential-risk and high-risk groups, but only “other mood disorder” showed a significant difference. There were also significant differences in behavioral patterns among the 3 groups. Conclusion:This study suggests that there are psychiatric comorbidity and behavioral pat-tern differences according to Internet addiction severity in adolescents. We expect further studies will reveal more profound understandings of these relationships.

實驗大學을 위한 敎養英語敎育의 改善方案 : 경북대학교를 중심으로

蔡俊基,朴英壽,李愚鍵,金漢昌 慶北大學校 語學硏究所 1977 語文硏究 Vol.2 No.-

3個 山林地域의 이슬의 酸性度 및 化學的 特性의 比較 : 서울, 龍仁, 平昌 地域을 中心으로 Mt. Nam in Seoul; Shingal, Yongin; Hangdong, Pyungchang

金英彩,鄭東浚,金洪律 한국농림기상학회 2000 한국농림기상학회지 Vol.2 No.2

This study was carried out to compare pH and chemical properties of dew in three forest stands(Mt. Nam-Seoul, Shingal-Yongin, Hangdong-Pyungchang)from May, 1998 to September, 1999. The results of this study were as follows; The acidity of dew in Seoul, which has a metropolitan environment, measured pH5.57±0.41. The highest acidity was measured in Yongin(pH5.50±0.96), while pH in Pyungchang was 6.36±0.57. Ion concentration in Pyungchang was lower than in other two regions, with a similar tendency of seasonal cation changes to those in Seoul and Yongin. Anion changes in Pyungchang, however, was inconsistent with those in other two regions. Although analyses of correlation coefficients showed that there was no significant correlation between overall ion concentrations and pH of dew, there was highly significant correlations between some cations and anions in Seoul and Yongin, leading a suggestion that those ions were coupled from one source.

산 촉매에 의한 N- (3,4-Dimethoxybenzyl)sulfonamide 유도체의 C-N 결합의 분해

金善嬉,鄭起源,李英行,李寀浩 원광대학교기초자연과학연구소 1992 基礎科學硏究誌 Vol.11 No.2

Cleavage reaction of N-(3,4-dimethoxybenzyl)sulfonamides has been examined. Treatment of these compounds with trifluoroacetic acid afforded sulfonamides which 3,4-dimethoxybenzyl group was removed.

잣나무 苗木의 養苗法 改善에 關한 硏究 Ⅲ : 播種時期이 差에 따른 잣나무 幼苗의 生長 比較 Effects of seeding time on the growth of young seedling

金英彩,金尙根 慶熙大學校 1984 論文集 Vol.13 No.-

After hastening seed germination by means of open ground storage during the period from the fall to next year spring, the growthes of seedlings seeded at different days were compared. The results obtained were summarized as follows: 1. The effects of seeding time on the length, diameter and weight growth of seedlings were irregular. However, each of the maximum growthes appeared on the 26th and 30th of March. Comparatively, the early seeding, the last ten days of March, was favorable for young seedling growth. 2. The contribution rates to the length, diameter, and weight growth by seeding time was 32.9%, 8.8% and 60.9%. The weight growth of seedlings was especially effected by seeding time.

잣나무 苗木의 養苗法 改善에 關한 硏究 Ⅰ : 春期播種苗와 秋期播種苗에 對한 生長比較 Effects of sowing season on the length, diameter and weight growth

金英彩,金尙根 慶熙大學校 1984 論文集 Vol.13 No.-

In order to investigate the influence of sowing season (spring and fall seeding) on the length, diameter and weight growth, the growthes of the seedlings were measured at the end of one growing season. Results are follows: 1. Fall seeding produces longer seedlings than spring seeding seedlings in length growth. 2. Spring seeding seedlings are larger than fall seeding seedlings in the increment of diameter. 3. Seedlings seeded on spring are heavier than fall seeding seedlings in the fresh and dry weight growth of stem and branch, needle, and root.

정신분열병과 N-Methyl-D-Aspartate 수용체 유전자와 연관된 VNTR 표지자인 D9S158 다형성의 연합

김종원,채영규,정은기,김길숙,박강규,이영호,최인근,양병환,한진희 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.5

정신분열병과 NMDA 수용체와 연관된 D9S158 유전적 표지자와의 연관성을 알아보기 위해 75명의 정신분열병 환자군과 87명의 정상대조군을 대상으로 중합효소연쇄반응을 이용하여 연합연구를 시행하여 다음과 같은 결론을 얻었다. D9S158 유전좌위에는 모두 8개의 대립유전자가 있었고, 각 대립유전자는 cytosine-adenine염기가 반복되는 217염기쌍에서 233염기쌍의 형태였다. 먼저 정신분열병 환자와 정상대조군의 대립유전자의 빈도를 비교해 본 결과 통계적으로 유의한 차이를 보이지 않았다(p〉.05). 환자군을 좀 더 동질적으로 만들기 위해 정신분열병의 가족력 유무, 음성 및 양성증상, 연성신경학적 징후, DSM-IV 임상아형에 따라 환자군을 나누어 대립유전자의 빈도를 비교해 본 결과, 특정 임상양상과 관련이 있는 대립유전자를 발견하지 못하였다. 결론적으로 본 연구에서는 D9S158 유전좌위와 정신분열병의 연관성을 입증하지 못하였으나 NMDA 수용체 유전자주위의 다른 표지자나 좀 더 유전적으로 동질한 환자군을 대상으로 한 추후연구가 필요할 것으로 생각된다. An association study with Korean schizophrenic patients(N=75) and normal controls(N=87) was performed to find the relationship between D9S158 polymorphism and schizophrenia using polymerase chain reaction. Eight different alleles of a dinucleotide polymorphism on D9S158 locus were observed in both group. When we compared the frequencies of alleles between schizophrenics and normal controls, there was no significant difference between two groups. To increase homogeneity of schizophrenic group, we divided schizophrenic group by clinical phenotypes such as family history, negative and positive symptoms(PANSS), soft neurologic signs(NES-K) and DSM-IV diagnostic subtypes. Then we compared the frequencies of alleles among subgroups of clinical phenotypes, and there were no significant differences between subgroups(p〉.05). Although our findings fail to provide an evidence of association between schizophrenia and D9S158 locus, further investigation of other loci that are linked to NMDA receptor gene may be needed in genetically homogeneous subgroups of schizophrenia.

원공을 가진 평판의 대변형 해석

蔡泳晳,金東燮 嶺南大學校 工業技術硏究所 1983 연구보고 Vol.11 No.1

The behavior of thin flat plates under transverse loading such that the non-linear geometric relationships must be included in the analysis gives rise to the large deformation theory of the plate. In present study, nonlinear analysis of a thin plate has been carried out by the finite element method based on the load incremental approach. Employing the method, it is shown that the small deformation theory is applicable to the plate if w/h≤0.3, and above this range large deformation theory is adequate. For the case of the clamped rectaugular plate with a circular hole, it is found that the stress concentration factor around the hole is about 1.6∼1.65.

잣나무림의 가지치기가 생장 및 절단상구 유합에 미치는 영향에 관한 연구

김영채,정현배,주영특,이임균 경희대학교 부설 식량자원개발연구소 1993 硏究論文集 Vol.14 No.-

잣나무 조림지를 대상으로 가지치기의 정도가 임목의 생육에 미치는 영향과 가지절단방법이 절단면의 유합속도에 미치는 영향을 알기 위하여 가지치기 정도와 가지절단방법을 달리하여 시험조사된 본 연구에서는 다음과 같은 결과를 얻었다. 1. 가지치기한 후 2년까지는 수고생장이 가지치기 정도의 영향을 받는 것으로 나타났지만 그 이후부터는 그다지 영향을 받지 않았다. 2. 흉고직경생장에 있어서도 가지치기 정도의 영향을 크게 받지 않는 것으로 나타났다. 3. 가지의 절단면 형태에 따른 유합정도는 지융부 포함 절단법(91.9%)이 지융부 제외 절단법(78.0%)보다 더 높은 유합정도를 나타내었다. 4. 가지의 절단직경의 크기와 유합정도와의 상관관계는 처음 2년간은 두가지 방법에서 모두 유의성을 인정할 수 있었는데 특히 지융부 포함 절단법은 절단후 2년동안은 절단직경이 클수록 빠른 유합정도를 보였으나 어느정도의 유합이 이루어진 후에는 절단직경의 크기와 유합정도 사이에는 유의성을 찾을 수 없었다. This study was conducted to find out the effect of pruning on tree growth and the effect of pruning methods on healing of wound orientated Pinus koratensis afforested land. Through-out a different test in pruning and cutting-methods of pruning obtained result as follows. 1. Degrees of pruning have an effect on height growth for two years after pruning but since that time they not an effect on height growth. 2. Degrees of pruning have not an effect on D.B.H. growth. 3. Healing rate by pruning method were B method(straight angle cut line 91.9%)higher than A method(end of turgid cut line(78.0%). 4. Correlation coefficients between healing of wound and diameter of cutting face were allowed significant in A method(P>0.05). The larger the diameter of cutting face was the faster the healing of wound in all methods for two years. But B method was allowed no significant after two years.

천연가스의 반응성 연구

김병일,조원일,백영순,김영채 한양대학교 에너지·환경기술연구소 1997 에너지·環境技術論文集 Vol.3 No.-

플라즈마를 이용하여 천연가스를 활용하는 기술을 개발하기 위하여 연속적인 공정으로 플라즈마를 발생시켜 메탄올 에틸렌으로 변환하는 실험을 수행하였다. 원료 메탄의 유량, 마이크로웨이브의 출력, 반응 압력, 촉매의 유무를 변화시켜 실험한 결과 메탄은 플라즈마에 의하여 에틸렌, 에탄, 아세틸렌으로 변환되어지고 메탄의 전환율과 에틸렌의 선택도는 원료의 유량, 마이크로 웨이브의 출력, 반응 압력, 촉매의 영향을 받고 있음을 확인할 수 있었다. 실험 결과 최고의 메탄 전환율은 촉매를 사용하지 않았을 때의 33.35%이며, 100w 이내의 저출력 조건에서 최고의 에틸렌 선택도는 촉매를 사용했을 때의 28.58%였다. 이 반응의 메카니즘 및 메탄 전환율과 에틸렌 선택도에 영향을 주는 각 임계요인의 영향에 대해 기술해 본다.