大學生의 不適應에 관한 社會學的 考察

金成國,黃甲鎭 부산대학교 학생생활연구소 1984 硏究報 Vol.20 No.1

Although prior studies analyze student's adjustment to college exclusively in psychological terms, the adjustment process consists of a range of dimensions. This study develops a sociological approach to the adjustment problem. More specifically, the present study identifies three types of maladjustment (related with learning problems, difficulty in campus life, and student activism, respectively). It also specifies major sources of maladjustment such as individual characteristics (including personality, family background, the organization of university, social structural environment). Empirically, correlation and regression analysis (using a simple recursive path model) show several interesting results: ① The pattern of causal relationship differs according to the types of the maladjustment. ② Self-esteem plays a very important role in explaining the maladjustment. Regardless of maladjustment types, its causal effects are consistently shown. ③ Students' evaluation of politic-economic situation is the most important predictor of their attitude about the student movement. ④ Our measure of the maladjustment is moderately correlated with social psychological measures such as alienation scale and symptom check List-90. In conclusion, it is suggested that future student guidance should be specified to correspond to different types of maladjustment.

大學生의 學校 및 社會에 대한 情報追求行爲 : 부산 대학생을 중심으로

姜大基,黃甲鎭 釜山大學校 學生生活硏究所 1982 硏究報 Vol.18 No.1

The study attempted to investigate the relationship between information-seeking behavior about the university life and society in general and background variables including family structure, class size and departmental employment rate. In this study, alienation and self-esteem were treated as intervening variables. For the analysis, 523 questionnaires were collected from undergraduate students at the Busan National University. A path analysis showed that respondent's self-esteem played a significant role in affecting student's information-seeking behavior and alienation. Among the background variables, class size was the only significant variable related to self-esteem. However, alienation which was assumed to be the major variable influencing information-seeking behavior among students did not show a significant effect on information-seeking behavior. It was assumed that one of the reasons for the very low relationship between these two variables was the structural constraints created by the university system such as extreme competition and anxiety for the among lower grade students.

釜山大學校 女學生의 家族價値觀의 近代性에 관한 硏究

李成海,黃甲鎭 부산대학교 학생생활연구소 1983 硏究報 Vol.19 No.1

This article tries to investigate the modernity of family-related values of coeds at Pusan National University. A total of 6,298 female collegians were given questionaires on family related values in May of 1983. A total of 1,002 responses were finally analyzed for this article. Some key findings in the study are as follows: (1) More than 80% of respondents turned out to be modern in the values of family, education and ancestor worship, while only about 55% of respondents did so in the values of marriage, horoscope matching and filial piety. (2)The more education the respondent's mother received, the less modern the respondent(the female student) in the values of marriage, family and ancestor worship. And the higher income levels of the resrondent's family was, the less modern the nespondent was in the ualues of marriage.

Ni-Ferrite-Based Thermochemical Cycle for Solar Hydrogen Production

Gab-Jin Hwang,박주식,Sang-Ho Lee,In-Tae Seo,Jong-Won Kim 한국공업화학회 2004 Journal of Industrial and Engineering Chemistry Vol.10 No.6

Ni-Ferrite-Based Thermochemical Cycle for Solar Hydrogen Production

Hwang, Gab-Jin,Park, Chu-Sik,Lee, Sang-Ho,Seo, In-Tae,Kim, Jong-Won 한국공업화학회 2004 Journal of Industrial and Engineering Chemistry Vol.10 No.6

Ni-Ferrite (NiFe₂O₄) was prepared as a basic _metal oxide for a solar hydrogen production cycle consisting of a methane reduction step and a water-splitting step. All steps were performed at relatively low temperatures (below 1073 K). In the CH₄-reduction step, it was confirmed that CH₄ reduction of the prepared Ni-ferrite progressed through two reaction regions with an increase of reaction time. In one, CH₄ reacted with oxygen discharged from Ni-ferrite (region 1); in the other, the methane self-decomposition occurred (region 2). The water splitting step was performed using the reduced Ni-ferrite after the CH₄ reduction step in the two regions. In the water splitting step after the CH₄ reduction step (region 1), CO and CO₂gas were not detected. The maximum H₂ production rate was about 3.3 mL/min g-metal-oxide at 10 min. The H₂ production rate in the water splitting step after the CH₄ reduction step (region 2) was about 3.3 mL/min g-metal-oxide at any reaction time. We confirmed from the XRD patterns that the phase of the prepared Ni-bearing ferrites was changed in each reaction step and that the phase after the water splitting step returned to the phase before the methane reduction step.

HI-H2O 기상 혼합물에서 Silica 막의 안정성

HWANG Gab Jin,PARK Chu Sik,LEE Sang Ho,Choi Ho Sang 한국막학회 2004 멤브레인 Vol.14 No.3

열화학적 IS 공정에서 요오드화수소의 분해에 적용하기 위하여 화학증착법(CVD)으로 제조된 silica 막의 안정성을 HI-H_2O 기상 혼합물에서 평가하였다. Si 원천으로 tetraethoxysilane을 사용하여 서로 다른 CVD 온도로 기공크기가 100 nm인 α-alumina를 처리하였다. CVD온도는 700^℃, 650^℃, 600^℃이었다. 600^℃에서 수행한 단일 성분의 투과 실험에서 측정한 막의 H_2/N_2 선택도는 CVD 온도 700^℃의 M1 막은 43.2, 650^℃의 M2 막은 12.6, 600^℃의 M3 막은 8.7을 나타내었다. HI-H_2O 기상 혼합물에서 안정성 실험은 450^℃에서 수행하였는데, CVD 온도 650^℃에서 처리된 막이 다른 온도에서 처리된 막보다 더 안정성이 더 좋은 결과를 얻었다. The stability of the prepared silica membrane by chemical vapor deposition (CVD) method in the HI-H_2O gaseous mixture was evaluated aiming at the application for hydrogen iodide decomposition in the thermochemical IS process. Porous α-alumina having pore size of 100 nm was modified by the different CVD temperature using tetraethoxysilane as the Si source. The CVD temperature was 700^℃, 650^℃, and 600^℃. The H_2/H_2 selectivities of the modified membranes which were measured by single-component permeation experiment showed 43.2, 12.6, and 8.7 at 600^℃ for the M1 (CVD temperature was 700^℃), M2 (CVD temperature was 650^℃) and M3 membranes (CVD temperature was 600^℃), respectively. Stability experiment in the HI-H_2O gaseous mixture was carried out at 450^℃. The prepared silica membrane at 600^℃ of CVD temperature was more stable than that at the other CVD temperature.

전자선 가속기에 의해 방사선 처리한 양이온교환막을 이용한 전해-전기투석에 의한 HIx용액으로부터 HI의 농축

Gab-Jin Hwang,Jeong-Keun Kim,Sang-Ho Lee,Ho-Sang Choi 한국막학회 2007 멤브레인 Vol.17 No.4

HI몰랄리티가 9.5 mol/kg-H2O인 HI의 전해-전기투석을 시판의 양이온교환막(CMB)을 이용하여 요오드의 존재하에 실험을 진행하였다. 수소이온 투과의 선택성을 증가시키기 위해, 막은 전자선 가속기를 이용하여 방사선 처리하였다. 방사선 처리한 막의 막특성(막 저항, 이온교환용량, 함수율)을 측정하였다. 각각의 방사선량에서 처리한 막의 2 mol/dm3의 KCl 용액에서 막저항, 이온교환용량과 함수율은 처리하지 않은 막과 거의 동등의 값을 가졌다. HI몰랄리티가 9.5 mol/kg-H2O인 HI의 전해-전투기투석을 75℃, 9.6 A/dm2에서 진행하였다. 전자선 가속기에 의해 방사선 처리한 양이온교환막은 처리하지 않은 막과 비교하여 고분자의 가교구조와 함께 수소이온투과의 높은 선택성을 가졌다. Electro-electrodialysis of hydriodic acid with HI molality of ca. 9.5 mol/kg-H2O was examined in the presence of iodine using a commercial cation exchange membrane, CMB, as a separator. For the increase of the selectivity of proton permeation, the membrane was radiation-treated by accelerated electron radiation. The membrane properties (area resistance, ion exchange capacity, water content) of the radiation-treated membranes were measured. The area resistance in 2 mol/dm3 KCl solution, ion exchange capacity and water content of the radiation-treated membranes at each dose rate dad almost the same value as that of the non-treated membrane (original of CMB membrane). Electro-electrodialysis of hydriodic acid with HI molality of ca. 9.5 mol/kg-H2O was examined at 75℃ with 9.6 A/dm2. The radiation-treated cation exchange membrane by accelerated electron radiation had higher selectivity of the proton permeation by cross-linking structure of polymer than that of the non-treated membrane.

분리막 기술을 이용한 열화학적 수소제조 IS(요오드-황) 프로세스의 개선

황갑진(Gab Jin Hwang),김종원(Jong Won Kim),심규성(Kyu Sung Sim) 한국수소및신에너지학회 2002 한국수소 및 신에너지학회논문집 Vol.13 No.3

건조로 배출가스 이용 고함수 페기물 건조시스템의 에너지 효율 향상

황갑진(Gab-Jin Hwang),최상일(Sang-Il Choi),김정근(Joeng-Geun Kim),이상호(Sang-Ho Lee),박영철(Young Cheol Park),이승용(Seong-Yong Lee),진경태(Gyoung-Tae Jin) 한국에너지학회 2008 한국에너지공학회 학술발표회 Vol.2008 No.-

열화학적 수소제조 IS ( 요오드 - 황 ) 프로세스

황갑진(Gab Jin Hwang),최호상(Ho Sang Choi),강안수(An Soo Kang),김종원(Jong Won Kim),소관훈(Kaoru Onuki) 한국공업화학회 2002 공업화학 Vol.13 No.6

원자력 발전의 고온 가스로(high temperature gas-cooled reactor, HTGR)의 냉각제로 사용되는 He가스의 폐열에너지를 이용하여 물을 분해해서 수소를 생산하는 열화학적 수소제조 IS프로세스에 대한 특성을 정리하였다. 폐사이클 연속 수소 생산 기술, 분리막 기술에 의한 프로세스 개선, 플랜트 설계를 위한 구성 재료에 관한 연구를 중점으로 정리하였다. 고온 원자력 열에너지를 열화학적 수소 제조법은 실현 가능한 단계까지 왔다고 생각되며, 아직 연구 개발 과제가 많이 남아 있지만, 미래의 청정 에너지 중의 하나인 수소를 대량 생산할 수 있는 가능성을 갖고 있다. This study summarized the properties of thermochemical water-splitting iodine-sulfur process for hydrogen production using the waste heat from the High Temperature Gas-Cooled Reactor (HTGR), recycling the heat of nuclear power. The summary was based on the research findings on closed-cycle contrinuous hydrogen productin techniques, the improvements of process with membrane separation techniques and studies on materials of plant construction. Although there still remain some problems to be resolved, the thermochemical water-splitting hydrogen production method using the high temperature nuclear thermal energy can be relaized in the near future. Thus, it is foreseeable that mass-production of hydrogen can be obtained and utilized as one of the clean energy sources in the future.