Room-Temperature Synthesis and Characteristics of Nanocrystalline TiO2 on Mica by Homogeneous Precipitation

조지희,탁용덕,김원용,임성환 대한금속·재료학회 2009 METALS AND MATERIALS International Vol.15 No.6

Nanocrystalline TiO2 layers were synthesized onto a mica substrate using a room temperature homogeneous nucleation method. The synthesis was controlled by optimizing the precipitants, the pH, the reaction temperature, the reaction time, and the stirring rate. The TiO2 layers were characterized by photospectrometry, X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high-resolution electron microscopy (HREM). The layers were well synthesized even at room temperature, which resulted in pigments having a strong interference color.

VR 인터랙션 현존감 향상을 위한 제스처 기반 UI 디자인 제안

조지희,정의철 한국전시산업융합연구원 2019 한국과학예술융합학회 Vol.37 No.4

This paper begins with the necessity of a novel UI design for VR. Since VR provides a 3-dimensional space that allows free bodily movements, a different interface other than conventional GUI needs to be applied to improve the sense of presence for the user. Presence is considered to be the most important constituent to build up successful VR contents. This study aims to propose a new UI design concept using bodily movements that is appropriate for a VR environment. This study started its contemplation from the alterations of UI aspects, the characteristics of VR, the factors of presence, and gesture types by reviewing previous researches. Also, the research explored the applicability of intuitive gestures which can express VR functions. Secondly, the research selected 5 metaphoric gestures through a user survey and proposed a VR UI design concept suitable for them. The 5 functions selected for the experiment are as follows: 1) Volume control, 2) Brightness control, 3) Quick menu, 4) Teleportation, 5) Tool swapping. Finally, UI prototypes based on the gestures were developed and used for the user assessment to evaluate presence. The assessment result showed a generally higher presence score for the gesture-based UI than the conventional controller-based UI. This study suggests the possibility of gesture-based UI to enhance presence in VR while It is expected to present UI design possibilities to interact intuitively with the environment. 본 연구는 사용자의 자유로운 움직임이 가능한 VR 은 평면적 GUI와는 다른 UI 디자인이 필요할 것이라 는 생각에서 출발하였다. 현존감(Presence)은 VR 환 경의 UX 디자인에서 중요한 요소이다. 본 연구의 목 적은 VR 환경에서 현존감을 향상시킬 수 있는 UI 디 자인 컨셉을 제안하는 것이다. 따라서 신체 제스처를 융합하여 현존감을 향상시키는 새로운 UI 디자인을 시도하였다. 연구 내용 및 결과를 정리하면 다음과 같 다. 첫째, 선행 연구 고찰을 통하여 UI 변화양상, VR 의 특성, 현존감의 구성 요소를 파악하고, VR 기능을 은유적으로 표현할 수 있는 직관적 제스처의 적용 가 능성을 탐색하였다. 둘째, 설문을 통하여 1) 볼륨제어, 2) 조도제어, 3) 퀵 메뉴 열기, 4) 원거리 순간이동, 5) 빠른 도구 교체의 다섯 가지 기능에 적합한 제스처를 선택하여, VR UI 디자인 컨셉을 제안하였다. 셋째, 제 안된 UI를 프로토타입으로 구현하여 참여자들을 대상 으로 현존감에 대한 사용자 평가를 수행한 결과 제스 처 기반 UI가 기존 컨트롤러 기반 UI보다 전반적으로 더 높은 현존감 평가 결과를 얻을 수 있었다. 이러한 연구결과를 바탕으로 VR환경에서 보다 향상된 현존 감을 사용자에게 제공하면서, 쉽고 직관적으로 인터랙 션할 수 있는 UI 디자인 가능성을 제시할 수 있을 것 으로 기대한다.

폐경 후 호르몬 요법시 초기 생화학적 골표지자와 골밀도 변화와의 상관관계

조지희,공은희,최영식,김양수,김흥열,어완규,홍기연 고신대학교의과대학 2007 고신대학교 의과대학 학술지 Vol.22 No.1

Background : This study was aimed to estimate the relationship between bone mineral density after hormone therapy (HT) for one year and short-term changes of bone markers in postmenopausal women. Methods : Biochemical markers of serum osteocalcin (OC) and urine deoxypyridinoline (Dpd) at 3 months and lumbar bone mineral density (BMD) were measured at 1 year in 80 operated postmenopausal women(PMW) taking HT. Results : Serum OC and urine Dpd decreased from 10.85% at baseline to 7.87% at 3 months and BMD increased 2.2% after 1 year of treatment. 56 (80%) among 70 with decreased OC revealed increasement of BMD, while 50 (78.1%) among 64 PMW with decreased urine Dpd showed increasement of BMD. Serum OC of bone gainers was lower than of bone losers (10.18% vs 14.01%) and urine Dpd also lower than that of bone losers (7.29% vs 10.6%). No correlations between biochemical markers such as, serum OC (r=-0.034) and urine Dpd (r=-0.031that ) checked at 3 months and BMD at 1 year were seen in postmenopausal women. Conclusion : Short-term changes of bone markers did not precisely predict the long-term changes of BMD in postmenopausal women.

10대 여고생들의 입술화장품 사용이 입술에 미치는 영향

조지희,윤혜정,안규중,안인숙,한현주 대한피부미용학회 2015 대한피부미용학회지 Vol.13 No.1

The purpose of this study is to determine how the use of lip-tint and lip-gloss among teens affect their lips. This research examines the change of dead skin on lips, lip color, and lip moisture. The researcher chose twenty female high school students and divided them into a control group and an experimental group after investigating the students’ homogeneity. The researcher gathered data for study through observation and student surveys over the course of 4 weeks. Students in the control group were asked to apply lip-gloss and the experimental group was asked to apply lip-tint three times a day in the morning, afternoon, and night. The researcher measured the changed amount of dead skin, lip color, and lip moisture before use, after two weeks of use, and after 4 weeks of use by using the spectrophotometer, DermaLab USB moisture probe, and video microscope. In the case of the control group, actual change was not significantly found after 4 weeks of lip-gloss use compared to before use. Therefore, it was considered as no change in the statistics. In the pigmentation change experiment for the experimental group, the upper lip coloring increased 9.61% and increased 10.69% on students’ lower lip. With regard to moisture ratio, the students who used lip-tint decreased 48.61% on their upper lips and decreased 43.87% of moisture on the lower lips after 4 weeks of use. It was examined that moisture decreased a lot from use of lip-tint. Also, an increase in the degree of dead skin on the lips and pigmentation were found from using lip-tint. After the experiment, all the students were given a subjective self-diagnosis assessment. In the subjective assessment of dead skin, 50% of the experimental group answered, ‘dead skin on the lips’, 30% of students answered ‘a lot of dead skin on the lips’, 70% of students answered ‘dry lips’, and 30% of students answered ‘very dry lips’. In the pigmentation change, 80% of students agree that ‘there was a change of lip color’. Also the survey showed that 80% of students answered that, ‘the cleansing of lip-tint is more difficult than that of lip-gloss’. This research showed that there were serious causes of tinted lip from using lip-tint. Also, the cause of cracked lips from having dry lips and dead skin on the lips was found. The finding of this study concluded that lip cosmetic products can cause pigmentation and dead skin problems to teenagers.

청소년의 어머니 애착이 일반적 감기에 미치는 영향: 안녕감의 매개효과

조지희 ( Jihui Cho ),김진영 ( Jinyoung Kim ) 아시아문화학술원 2018 인문사회 21 Vol.9 No.5

본 연구의 목적은 청소년의 어머니 애착과 일반적 감기 간 관계에서 안녕감의 매개효과를 검증하는 것이다. 본 연구의 참여자는 고등학생 528명이었으며, 수도권 소재의 3개 고등학교에서 설문응답을 통해 자료를 수집하였다. 수집된 자료의 분석에는 SPSS 20.0과 R(version 3.4.3)의 Lavaan 패키지를 사용하였고 구조방정식 분석을 통해 연구 모형에 포함된 경로들이 유의한 지를 확인하였다. 그 결과, 어머니 애착과 일반적 감기 간 관계에서 안녕감의 완전매개효과가 나타났다. 이는 어머니 애착이 일반적 감기에 미치는 영향에서 안녕감이 보호요인으로서 작용할 수 있는 가능성을 시사한다. 본 연구 결과는 청소년기의 일반적 감기를 예방하기 위한 후속 연구 및 개입에 활용될 수 있을 것이라 기대된다. The purpose of the present study is to examine the effect of well-being as a mediator in the relationship between adolescents’ maternal attachment and common cold. The participants of the present study were 528 high school students, and the data were collected through a questionnaire survey at three high schools in Seoul and Gyeonggi-do. For the analysis of the data, SPSS 20.0 and Lavaan package of R (version 3.4.3) were used. Structural equation model analysis confirmed that the pathways included in the study model were significant. As a result, it was found that well-being completely mediated the relationship between adolescents’ maternal attachment and common cold. This finding suggests that well-being may serve as a protective factor against the influence of adolescents’ maternal attachment upon common cold. It is expected that the finding of the present study will be useful for future research and intervention to prevent common cold in adolescence.

영상의 라인 매칭을 이용한 스테레오 영상의 평행화

조지희(ChiHee Cho),김경태(KyungTae Kim) 한국멀티미디어학회 2001 한국멀티미디어학회 학술발표논문집 Vol.2001 No.2

음악치료프로그램이 만성정신분열병환자의 증상과 삶의 질에 미치는 영향

조지희(Jee Hee Jo),정성민(Seong Min Jeong),김성희(Sung Hee Kim) 한국정신병리진단분류학회 2000 精神病理學 Vol.9 No.2

N/A N/A

그림좌절 검사와 다면적 인성검사에서 나타난 살인 정신분열증 환자와 정상대조군의 공격반응의 차이

조지희,이근후 大韓神經精神醫學會 1992 신경정신의학 Vol.31 No.3

The purpose of this study was to investigate the difference between normal control group and schizophrenic patients who committed homicidal behavior in response to frustration using P.F.T.(Picture-Frustrations-test) and MMPI. The study subjects were 77 homicidal schizophrenics who were admitted to the Forensic Psychiatric Institution from October, 1989 to February, 1990 and 83 normal control group who had no crime history and psychiatric problem. The following results were obtained : 1) As to the direction in P.F.T., homicidal schizophrenics responded rather in intropunitive or impunitive direction than in extrapunitive direction compared with normal control group. 2) As to the reaction type in P.F.T., homicidal schizophrenics showed more need-persistence(N-P) type and less obstacle-dominance(O-D) type than normal control group. 3) Regarding the superego factors in P.F.T., homicidal schizophrenics showed significantly less socore in E, I, E+E, E-E and M+I response than normal control group. 4) Homicidal schizophrenics exhibited significantly less G.C.R. score than normal control group, which is correlated with sociality and appropriateness for age in response to frustration. 5) In the validity scale of L, F, K and in the clinical scale of D, Pd, Pa, Pt, Sc on MMPI, homicidal schizophrenics remarked significantly high T score than normal control group. Especially in L scale and Pa scale, the difference of two groups was most prominent.

Infestation Status of Digenetic Larval Trematodes in Fresh-Water Fish Collected in the River Dongchang

CHO, Jee-Hee,CHUNG, Dong-Il,CHOI, Dong-Wik 慶北大學校 醫科大學 1991 慶北醫大誌 Vol.32 No.3

1989年 4月부터 同年 9月까지 慶北 淸道郡 東倉川에서 13種의 淡水魚를 採集하여 各種 吸蟲類 被囊幼蟲의 寄生狀을 調査하였다. 東倉川에서 採集된 13種의 淡水魚에서 6種의 吸蟲類 被囊幼蟲과 所屬未定 被囊幼蟲을 檢出하였다. 肝吸蟲 被囊幼蟲은 4種의 淡水魚에, Metagonimus屬 被囊幼蟲은 2種의 淡水魚에 寄生되어 있었다. Echinochasmus屬 被囊幼蟲은 3種, Exorchis oviformis 被囊幼蟲은 9種, Metacercaria hasegawai 被囊幼蟲은 10種, Metorchis orientalis 被囊幼蟲은 2種의 淡水魚에서 檢出되었다. 몰개 및 돌고기에서의 肝吸蟲 被囊幼蟲의 寄生率은 各各 81.8% 및 100%였고 그 魚肉 1gram當 被囊幼蟲의 數는 몰개 66.7個, 돌고기 22.9個로 東倉川에서는 이 2魚種이 가장 重要한 肝吸蟲의 感染原인 것으로 나타났다. 몰개 및 돌고기에서의 Metagonimus 屬 被囊幼蟲의 寄生率 및 그 程度는 모두 낮았다. From April to September, 1989, fresh-water fish were collected in the river Dongchang and examined for the presence and intensity of the metacercariae of digenetic trematodes. Six kinds of larval trematodes and unidentified larvae were found. Among these larval trematodes, Clonorchis sinensis metacercaria was found from four species and the cyst of Metagonimus species from two species of the fish examined. Echinochasmus metacercaria was detected from three, Exorchis oviformis from nine, Metacercaria hasegawai from ten, and Metorchis orientalis from two species of fish examined. Incidences and intensity of infestation with C. sinensis metacercaria in the korean shiner, Gna-thopogon atromaculatus and the striped shiner, Pungtungia herzi were found to be 81.8% and 100%, 66.7 and 22.9 cysts per gram of flesh, respectively. Incidences and intensity of Metagonimus species were relatively low. In the light of these results, it is likely that G. atromaculatus and P. herzi are the important sources of infection for clonorchiasis in the river Dongchang.

한국의 탄소중립을 위한 CCUS 부문 국가별 국제협력 잠재력 분석

조민선,전은진,신현하,이원아,손지희 한국에너지기후변화학회 2023 에너지기후변화학회지 Vol.18 No.2

As humanity and ecosystems continue to be threatened by the accelerating climate crisis, carbon neutrality is an essential task at the global level. As carbon neutrality has become a new trend in the international order, competition for technological hegemony through preoccupy with new global carbon neutrality markets is intensifying. Therefore, it is necessary to secure carbon neutrality technology competitiveness through technological innovation, and it is necessary to secure technology competitiveness in the field of CCUS, which is a core technology among carbon neutrality technologies. This study aims to analyze the potential for international cooperation in the CCUS sector for carbon neutrality in Korea through a geopolitical analysis of all connected factors such as politics, economy, and society as well as environmental technology aspects. As a method to analyze the potential for international cooperation, the purpose of cooperation and the target country for analysis were set, potential evaluation indicators were selected, and the potential was assessed. The weight of each indicator was calculated using the AHP approach, and the potential for CCUS international cooperation by country was analyzed from the comprehensive results calculated through this. These results have the potential to be used as a decision-making tool to establish a CCUS international cooperation strategy.