미국 북서부 오레곤주 타이분지 내 탄화수소 생성과 배출에 대한 모델링 연구

장희정,유인창,Jang, Hee-Jeong,Ryu, In-Chang 대한자원환경지질학회 2009 자원환경지질 Vol.42 No.1

근원암으로부터 탄화수소가 생성되고 배출되는 시기는 석유시스템 모델링을 이용하여 분지의 지사를 복원함으로써 평가할 수 있다. 미국 북서부 오레곤주에 위치한 타이분지는 탄화수소 생성 가능성이 높은 지역이다. 본 연구에서는 남부타이분지에 대한 구조 층서적 관점에서의 분지 진화와 열역사 및 매몰사를 석유시스템 모델링의 수치모델을 사용하여 복원, 시뮬레이션 하였다. 분지 내 탄화수소 생성과 배출을 이해하기 위해 잠재 근원암에 대한 유기 지화학적 평가와 가능한 석유시스템을 분석하였다. 유기 지화학 자료를 통해 미분화된 움콰 그룹, 클라마스산의 이암층, Remote Member와 Coquille River Member에 협재된 탄층과 탄질 이암이 분지 내 가스를 생성시킬 수 있는 잠재력이 큰 근원암임을 알 수 있다. 남부 타이분지의 상대적으로 높은 열적 성숙도가 쿠스베이 퇴적층의 하중 압력에 의한 매몰과 연관됨을 지시하여 준다. 서부 캐스케이드흐로부터 관입에 의한 열 유입 또한 분지의 높은 열적 성숙도에 영향을 미친다. 이러한 분석을 바탕으로 근원암의 성숙과 탄화수소 생성, 및 배출이 석유시스템 모델을 통해 평가되어졌다. 모델링 결과는 모든 잠재 근원암으로부터 탄화수소가 생성은 되었으나 오직 Remote Member에서만 배출이 일어났음을 알려준다. The timing of hydrocarbon generation and expulsion from source rocks can be evaluated by reconstructing the geohistory of the basin using petroleum system modeling. The Tyee basin is generally considered having a high hydrocarbon generation potential For the southern part of the basin, the basin evolution from a structural and stratigraphic points of view, the thermal history, and the burial history were reconstructed and simulated using numerical tools of basin modeling. An evaluation of organic geochemistry for the potential source rocks and the possible petroleum systems were analysed to improve the understanding of the hydrocarbon charge of the basin. Organic geochemical data indicate that the undifferentiated Umpqua Group, mudstones of the Klamath Mountains, and coals and carbonaceous mudstones in the Remote Member and the Coquille River Member are the most potential gas-prone source rocks in the basin. The relatively high maturity of the southern Tyee basin is related to deep burial resulting from loading by the Coos bay strata. And the heating by intrusion from the western Cascade arc also affects to the high maturity of the basin. The maturation of source rocks, the hydrocarbon generation and expulsion were evaluated by means of basin modeling. The modeling results reveal that the hydrocarbon was generated in all potential source rocks and an expulsion only occurred from the Remote Member.

컨텍스트 기반 맞춤형 웹 서비스 제작을 위한 시뮬레이션 기반 방법론

장희정,김주원,최성운,이강선,Chang, Hee-Jung,Kim, Ju-Won,Choi, Sung-Woon,Lee, Kang-Sun 한국시뮬레이션학회 2006 한국시뮬레이션학회 논문지 Vol.15 No.4

퍼베이시브 컴퓨팅(pervasive computing) 기술이 현실화됨에 따라, 사용자에게 언제 어디서나 맞춤화된 서비스를 제공하기 위한 연구가 확대되고 있다. 기존 연구에서는 주로 단일 서비스가 센서 정보를 처리하는 제한된 방향으로 맞춤화된 서비스를 제공하고 있어, 사용자의 다양한 요구에 적응적인 서비스를 제공하는데 한계가 있다. 본 연구에서는 이와 같은 문제점을 해결하기 위해 시뮬레이션 기반 상황 인식 웹 서비스(CAS: Context-Aware Web services) 개발 방법론을 제안한다. 제안된 방법론은 사용자 상황 정보(예. 위치), 웹서비스 상황 정보(예. 반응시간), 사용 기기의 상태(예. 가용성), 환경 정보(예. 센서 데이터) 등을 시뮬레이션을 통해 종합적으로 고려하여 사용자 환경에 적응적인(adaptable) 서비스를 제공하도록 한다. With the emergence of pervasive computing, personalization becomes an important issue to provide with users customized services, anywhere and anytime in their specific environment. Many researches have shown the possibilities of personalization by acquiring and processing sensor information around users. However, personalization remains still at its infancy, since most researches have failed to consider various contexts comprehensively besides sensor data, and just developed tailored services for a specific application domain. In this work, we propose a simulation-based CAS (context Aware Web Services) development methodology. Our methodology considers various contexts on users (eg. current location), web services (eg. response time), devices (eg. availability) and environment (eg. sensor data) all together by simulating them on the fly for personalized and adaptable services.

sPAC(Web Service Performance Analysis Center): 성능 중심의 웹 서비스 조합 도구

장희정,송형기,이강선,Chang, Hee-Jung,Song, Hyung-Ki,Lee, Kang-Sun 한국시뮬레이션학회 2005 한국시뮬레이션학회 논문지 Vol.14 No.3

Web services and their composition (web processes) are promising technologies to efficiently integrate disparate software components over various types of systems. As many web services are nowadays available on Internet, quality of services (QoS) and performance/cost become increasingly important to differentiating between similar service providers. In this work, we introduce sPAC (Web Services Performance Analysis Centre) and show how customers can benefit from sPAC to consider performance in composing and commercializing web services. sPAC 1) helps users to graphically describe the workflow of web services, 2) invokes web services to test out performance for light load conditions, 3) automatically converts the web services and the flow between them into a simulation model, 4) conducts extensive simulations for heavy load conditions and various usage patterns, and 5) reports analysis results and estimation data for the web services.

한국 중년여성들의 유방자가검진(BSE)에 관한 지식 태도 및 실천정도

장희정(Hee Jung Jang),박정숙(Jeong Sook Park),오유정(Yun Jung Oh),최영희(Young Hee Choi),박은아(Eun A Park),정추자(Choo Ja Chung) 한국지역사회간호학회 2002 지역사회간호학회지 Vol.13 No.4

대학생들의 스마트폰사용수준에 따른 자기통제력, 정신건강, 대인관계 비교

장희정(Jang, Hee Jung),곽윤경(Kwag, Youn-Kyoung) 한국산학기술학회 2015 한국산학기술학회논문지 Vol.16 No.1

본 연구는 대학생들의 스마트폰 사용수준에 따른 자기통제력, 정신건강, 대인관계 정도를 확인하고 그 차이를 비교분 석하기 위해 수행되었다. 자료수집을 위해 D지역의 3개 대학에서 대학생 246명에게 2012년 4월 25일부터 5월 28일까지 설문 조사를 실시하였다. 연구결과, 스마트폰 과잉사용군은 비과잉사용군보다 자기통제력이 낮고(t=3.53, p=.001) 정신건강문제가 많았다(t=-3.61, p=.000). 그리고 스마트폰 비과잉사용군에서는 자기통제력(r=-0.27, p=.005)과 의사소통(r=-0.20, p=.043)이 스마트폰 과잉사용과 부적관련이 나타난 반면, 과잉사용군에서는 불안(r=0.30, p=.000), 우울(r=0.20, p=.017) 등 정신건강(r=0.22, p=.009)이 스마트폰 과잉사용과 정적상관을 보였다. 대학생들의 스마트폰 사용수준에 따라 상이한 스마트폰 과잉사용 관련요인이 보고된 본 연구결과로 볼 때, 대학생들의 스마트폰의 건전한 사용을 돕기 위해서는 스마트폰 사용수준에 따른 차별적 접근이 필요할 수 있겠다. This study was conducted, to investigate the level of self-control, mental health and the interrelationship of college students and to analyze the differences between these variables according to the level of smart phone usage. The subjects of our study were collected 246 students. The survey was conducted from April 25th to May 28th in 2012. The result indicated that cellphone overuse group has the lowerer self-control(t=3.53, p=.001) and the more mental health discomfort(t=-3.61, p=.000) than non-smart phone overuse group. In non-smart phone overuse group, the usage of smart phone was negatively correlated with self-control(r=-0.27, p=.005) and communication(r=-0.20, p=.043). And in the other group, the usage of smart phone was positively correlated with mental health discomfort(r=0.22, p=.009). These findings imply that it maybe needed to examine effect factors of the smart phone usage according to the level of smart phone usage.

간호대학생의 임상수행능력 영향 요인

장희정(Jang, Hee Jung),곽윤경(Kwag, Youn-Kyoung) 한국산학기술학회 2013 한국산학기술학회논문지 Vol.14 No.9

본 연구는 간호대학생의 임상수행능력 정도를 확인하고 임상수행 능력의 예측 요인을 파악하고자 시도되었 다. 연구 대상자는 D광역시에 소재하는 2개 대학 간호학과 학생 197명이었다. 자료수집을 위한 설문조사는 2011년 3 월 2일부터 21일까지 실시되었고 자료분석은 SPSS 21.0프로그램을 이용하여 분석하였다. 연구결과 대상자의 임상수 행능력은 평균 3.96점이었고, 임상수행능력과 비판적사고 성향, 문제해결능력, 전공만족도, 임상실습만족도는 유의한 상관관계가 있는 것으로 나타났다. 간호대학생의 임상수행능력에 영향을 미치는 영향요인은 비판적 사고성향이 18.2% 의 설명력으로 가장 높은 영향요인으로 나타났고 논리학 이수 문제해결능력을 포함한 변수가 임상수행능력의 27.2% 를 설명하였다. 본 연구결과에 의하면 간호대학생의 임상수행능력 영향요인을 고려한 효율적인 교육프로그램 개발이 요구된다. The purpose of this study was to investigate the level of clinical competence and influencing factors of clinical competence in nursing students. Convenience sample of 197 subjects were recruited from two colleges in D city. The survey was conducted from March 2nd to 21th 2011. The data was collected by questionnaires and was analyzed with SPSS statistics 21.0. The mean score of clinical competence was 3.96. Significant positive correlation among clinical thinking disposition, problem solving ability, major satisfaction, satisfaction with clinical practice, clinical competence were found. It was found that the effect of clinical thinking disposition, completion of logic course, problem solving ability on clinical competence was 27.2% and clinical thinking disposition influence on clinical competence in nursing students. The study findings suggest that to develop the effective learning program with achievement level of clinical competency for nursing students.

전문간호사 요구에 따른 간호사의 자기효능감과 전문직 자아개념

장희정(Jang Hee Jung),양순옥(Yang Soon-Ok),이명옥(Lee Myung-Ok) 기본간호학회 2007 기본간호학회지 Vol.14 No.1

Purpose: The purpose of this study was to identify the need for advanced practice nurse and explain the relationship between self-efficacy and professional self-concept among Korean nurses, Method: The participants were 511 Korean nurses who were recruited in hospitals or public health centers in Korea. The instruments used in this study were Sherer et al's self-efficacy instrument, Arthur's professional self-concept instrument, and a structured questionnaire on the need for advanced nurse practitioners, Cronbach alpha, mean, SD, X², t-tests, ANOVA, Pearson correlation coefficient were used to analyze the data using SPSS PC+ ver 12.0 for Windows. Results: Of the nurses, 57.9% of wanted to be advanced practice nurses. The mean of professional self-concept and self-efficacy scores for the nurses were at the medium level. Professional self-concept and self-efficacy of nurses showed significant differences according to age, working location, marital status, level of education, and length of clinical experience. A significant positive correlation was found between professional self-concept and self-efficacy. Conclusion: Before planning to develop the role of Advanced practice nurse, there is a need to measure self-efficacy and professional self-concept among nurses. Politically, strategies to increase self-efficacy and professional self-concept among Korean nurses will be necessary in order to prepare good advanced practice nurse.

손·팔 마사지가 중년 여성의 심리적 변인에 미치는 효과

장희정(Jang Hee Jung) 한국간호과학회 2000 Journal of Korean Academy of Nursing Vol.30 No.6

학령기 아동의 내러티브 쓰기에 나타난 거시 및 미시구조 분석

장희정(Hee Jung Chang),김화수(Wha Soo Kim) 한국언어치료학회 2016 言語治療硏究 Vol.25 No.4

Purpose: Writing problems may constantly cause learning difficulties until late school age. This study examined typically-developing school-age children’s narrative writing development in macrostructure and microstructure. Methods: A total of 120 students were selected, 40 each from the second, fourth, and sixth grade. They each wrote personal and fictional narratives. The writing samples were analyzed for macrostructure and microstructure. The macrostructure of each narrative was assessed by using the narrative scoring scheme (NSS). The microstructure of each narrative was analyzed by being divided into productivity, syntactic complexity, lexical diversity, and spelling accuracy. Results: In personal narratives, most characteristics in macrostructure increased in students in the higher graders. Productivity and lexical diversity in microstructure were significantly higher in the sixth grade. Syntactic complexity and spelling accuracy were significantly higher in the fourth and sixth grades than the second grade. In fictional narratives, the results of macrostructure analysis were the same as those of personal narratives, but in fictional, differences in mental states and cohesion were noticeable. In microstructure analysis, the results of fictional narratives were the same as those of personal narratives, but in fictional, there was a significant difference in spelling accuracy between the second and fourth grades. Partial correlation analysis between standards of macrostructure and microstructure found that NSS had positive correlations with microstructure, with the exception of spelling accuracy. Between microstructure items, the number of C-units showed a negative correlation with MLC-w, whereas other items had positive correlations. Such trends appeared in both personal and fictional narratives. Conclusions: This study discovered that most indicators increased as students were in higher grades. Even though the indicators that had differences were similar in both personal and fictional narratives, the difference between all grades were noticeable in fictional narratives.

韓ㆍ日 관광개발에 관한 연구성향 비교

장희정(Jang Hee Jung) 한국관광레저학회 1996 관광레저연구 Vol.8 No.2