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      • 참다래 수품종의 형태적 특성과 RAPD에 의한 유연관계 분석

        조윤섭,조혜성,노일섭,김월수 전남대학교 농업과학기술연구소 2000 農業科學技術硏究 Vol.35 No.-

        To examine the taxonomic relationships among 13 male kiwifruits by 36 morphological characters, principal component analysis and cluster analysis were carried out. Of 36 characters, hair density on ventral midribs and between ventral midribs, leaf length/leaf width ratio etc. were considered as very useful characters for the classification of Actinidiacea plants and number of white dots on branch, full flowering period and flower color etc. also showed significant differences among A. deliciosa, A. chinensis and wild kiwis. Results of cluster analysis using scores of the principal component indicated that 13 male kiwifruits could be grouped into A. deliciosa, A. chinensis and wild kiwis phenon at 0.5 of average distance in WMVCA. This result was also very similar to that of RAPD analysis. However, it seems that more characters including various kinds of Actinidia species are needed for the exact classification.

      • CHILL 병행처리 Run-time 시스템의 프로세스 관리와 언어 인터페이스에 관한 연구

        조철희,하수철 大田大學校 産業技術硏究所 1997 산업기술연구소 論文集 Vol.8 No.1

        본 논문은 CHILL 언어에 정의된 병행처리 기능을 실행시키기 위해 설계한 Run-time 시스템[8]의 프로세스 관리 구조 및 언어 인터페이스 규격에 관한 연구이다. CHILL Run-time 시스템은 기계 독립적인 부분과 기계 종속적인 부분으로 구성되는데 기계 독립적인 부분의 프로세스를 관리하기 위하여 ready, event, buffer, signal, region 큐가 사용된다. 이들의 구조와 C언어와의 언어 인터페이스 규격에 관한 사항을 제시한다. In this paper, we present the process management structure of run-time system[8] which we have designed to execute the concurrent processing facilities of CHILL language definition and have described the language interface specifications on the run-time system. The CHILL run-time system is consisted of the machine independent parts and machine dependent parts. To manage the processes in the machine independent parts is made use of queues(ready, event, buffer, signal, and region queue). We suggest the structure of these queues and the language interface specification with C language.

      • 병행 처리를 위한 CHILL 언어 Run-time 시스템의 설계

        조철희,하수철 大田大學校 産業技術硏究所 1996 산업기술연구소 論文集 Vol.7 No.2

        본 논문에서는 병행 프로그래밍 언어에서 제공되고 있는 병행 처리 기능을 실행시키기 위한 Run-time 시스템의 설계에 관한 연구를 기술하고 있다. 대상 언어는 ITU-T에서 통신처리 시스템용 프로그래밍 언어로 표준화된 CHILL이다. 이 언어는 다른 병행 프로그래밍 언어에 비해 다양한 병행 처리 기능들을 제공하고 있기 때문에, 이에 대한 병행 처리 Run-time 시스템의 설계는 병행 처리를 위한 주요 기능들과 기법들을 획득할 수 있는 효과를 얻을 수 있다. 이를 위하여 CHILL 컴파일러와의 정합을 위한 병행 처리 기능의 인터페이스 규격을 설계하며, 다른 컴퓨터 시스템으로의 이식성을 높이기 위해 기계 종속적인 부분을 최소화하도록 설계한다. 또한, Run-time 시스템의 병행 처리 프리미티브를 프로시듀어 호출 형식으로 사용할 수 있는 라이브러리 방식의 설계 방안을 제시한다. This paper presents the design of run-time system that supports the execution of concurrent processing facilities of concurrent programming language. The target language is the CHILL(CCITT High Level Language) that was recommended by ITU-T(International Telecommunication Union Telecommunication Standardization Sector). Because the CHILL programming language provides many various concurrent processing facilities as compared with other concurrent programming language, we can get some real effect about the major functionality and the techniques for the concurrent processing through a design of the CHILL run-time system. To implementing the CHILL run-time system, we design the interface rule between the CHILL compiler and the run-time system, and we minimize the machine dependent part of the run-time system in order to increase the portability. We also suggest the design concept for the concurrent processing primitives of the run-time system which can be invoked by procedure call.

      • 생쥐 뇌 N-type 칼슘 채널 α1B Subunit의 cDNA Cloning

        권혜수,조경혜 서울여자대학교 자연과학연구소 1997 자연과학연구논문집 Vol.8 No.-

        생체내에서 칼슘이온은 이차 정보전달자의 하나로서 생체현상을 조절하는 매우 중요한 물질중의 하나이다. 칼슘 이온의 유입은 주로 전압의존형 칼슘 채널에 의하여 이루어지며 막 홍분성, 효소활성, 호르몬 분비, 근육수축, 신경 전달물질의 전달 등의 세포내 다양한 기능을 조절한다. 이 전압 의존형 칼슘 채널은 그 전기생리학적, 약리학적 특성에 따라 4가지 타입(L-, P-, N-, T- type)으로 구분된다. 이중에서도 신경계에 특이적으로 분포하여 미성숙 뉴런의 이동이나 신경 전달 물질의 분비에 중요한 역할을 하는 N-타입 칼슘 채널의 연구가 많이 이루어지고 있다. 각 칼슘채널을 이루는 4개의 subunit 중에서 칼슘의 유입을 조절하는 역할을 담당하는 al subunit의 연구는 중요하며 활발히 진행되고 있다. 이미 알려진 흰쥐나 토끼의 N-타입 칼슘 채널과 마찬가지로 생쥐에서도 신경특이적인 N-타입 칼슘 채널의 역할이 중요하리라고 보여진다. 따라서 본 연구에서는 아직 완전하게 cDNA가 클론 되어있지 않은 생쥐의 뇌를 시료로 하여 cDNA를 합성한 후 rbB-I을 탐침으로 사용하여 검색하여 3가지의 클론을 얻었다. 그리고 클론 각각이 가지고 있는 insert를 restriction mapping으로 확인한 후 제한효소의 반응위치를 이용, 유전자 조작을 거듭하여 생쥐 N-타입 칼슘 채널 alB subunit cDNA의 full clone을 얻어ㅐㄴ었다. 그 발현양상은 Northern blotting을 이용하여 조직별, 발생별로 연구되어야 하고 그외 돌연변이를 이용한 기능연구 등이 수행되어야 하겠다. Influx of calcium through voltage-dependent calcium channels plays a vital role in the regulation of a variety of cellular functions, including muscle contraction, axonal outgrowth, hormone release, and neurotransmitter release. On the basis of electrophysiological and pharmacological properties, at least four types of calcium channel (designated T-, L-, N-, and P-type) have been distinguished and each type is composed of 4 or 5 subunits(??, ??, ??, ??, and ??). The ?? subunit of each type has been a focus of research since it controls the entry of calcium ions. Among the four major types of calcium channels, N-type calcium channels are unipue in that they are found specifically in neurons, have been correlated with control of neurotransmitter release, and are blocked by ??-conotoxin. Recently, many studies of N-type calcium channels have been done and are progressing. Mouse N-type ??B subunit is expected to play an essential role in migration of immature neurons and neurotransmitter release in considering the roles of rat and rabbit N-type ??B subunit. In this study, mouse brain cDNA library was prepared and screened with rbB-I DNA rpobe. Through gene manipulation, we obtained full-length cDNA clone of the ??B subunit of mouse N-type calcium channel. And through Northern boltting of mouse tissues and mutagenesis studies, we will study how the N-type ??B subunits of mouse are expressed and regulated.

      • KCI등재

        교정용 미니 임플랜트 고정원과 SWA en masse sliding retraction 시 전치부 치축 조절 요인에 관한 유한요소해석

        정혜심,성상진,문윤식,조영수,임승민 대한치과교정학회 2006 대한치과교정학회지 Vol.36 No.5

        교정용 미니 임플랜트 고정원을 이용한 교정 치료가 보편화되며, SWA와 이를 이용한 en masse sliding retraction은 임상에서 흔히 사용하는 치료법이 되었다. 그러나 고정원을 성공적으로 보존하려는 노력에 비해, 발치 공간 폐쇄 시 전치부 치축 조절에 관여하는 요인에 대한 보고는 아직까지 부족한 실정이다. 본 연구에서는 제1소구치를 제거한 상악 치아와 치주 인대 그리고 치조골에 대한 3차원 유한요소 기준모델을 제작하였고, 제1대구치와 제2소구치 사이 주호선 10 mm 상방에 식립된 교정용 미니 임플랜트를 고정원으로 사용할 경우, 측절치-견치 사이의 견인 훅의 높이를 변화시키며 후상방 견인력을 가하거나, 주호선에 보상 만곡을 부여하는 것이 전치부 치축 조절에 어떤 영향을 미치는지 시뮬레이션 하였다. 또한 전치부 치축이 설측 경사된 모델을 같은 실험 조건으로 시뮬레이션 하여 발치 공간 폐쇄 시 설측 경사된 전치부 치축을 유지하거나 개선할 수 있는 요인을 검토하였고, 다음과 같은 연구 결과를 얻었다. 2 mm 높이의 견인 훅에 대하여 후상방으로 견인력을 가할 경우 발생하는 함입력으로 인하여 전치부 설측 경사가 더 감소되지는 않았다. 견인 훅의 높이가 5 mm인 경우 후상방 견인력을 가하면, 측절치의 치관 순측 및 치근 설측 이동이 일어나고, 견치의 비조절성 후방 경사 이동이 심화되었다. 4 mm의 보상 만곡은 측절치의 치관 순측 및 치근 설측 이동을 일으키고, 견치의 비조절성 후방 경사 이동을 감소시켰다. 또한 전치부가 설측 경사된 모델을 기준모델과 같은 실험 조건으로 시뮬레이션 한 경우 치근면의 응력 분포와 25000배 확대된 그래프 상에서의 치아 이동 양상은 매우 유사하였다. 이상의 결과는 미니 임플랜트-SWA sliding 생역학을 구사 시 견인 훅의 위치와 와이어 상의 보상 만곡의 유무에 의해 전치부의 치축 조절이 달라지며 실제 임상에서 가이드라인으로 활용될 수 있을 것이다. Objective: With development of the skeletal anchorage system, orthodontic mini-implant (OMI) assisted en masse sliding retraction has become part of general orthodontic treatment. But compared to the emphasis on successful anchorage preparation, the control of anterior teeth axis has not been emphasized enough. Methods: A 3-D finite element Base model of maxillary dental arch and a Lingual tipping model with lingually inclined anterior teeth were constructed. To evaluate factors influencing the axis of anterior teeth when OMI was used as anchorage, models were simulated with 2 mm or 5 mm retraction hooks and/or by the addition of 4 mm of compensating curve (CC) on the main archwire. The stress distribution on the roots and a 25000 times enlarged axis graph were evaluated. Results: Intrusive component of retraction force directed postero-superiorly from the 2 mm height hook did not reduce the lingual tipping of anterior teeth. When hook height was increased to 5 mm, lateral incisor showed crown-labial and root-lingual torque and uncontrolled tipping of the canine was increased. 4 mm of CC added to the main archwire also induced crown-labial and root-lingual torque of the lateral incisor but uncontrolled tipping of the canine was decreased. Lingual tipping model showed very similar results compared with the Base model. Conclusion: The results of this study showed that height of the hook and compensating curve on the main archwire can influence the axis of anterior teeth. These data can be used as guidelines for clinical application.

      • KCI등재
      • 일부 흡연 대학생의 지각된 스트레스와 흡연실태에 대한 상관관계 연구

        강초록,권시내,권혜림,박수경,송인혜,오해인,이미지,한승아,황선아,김수지 이화여자대학교 간호과학대학 2003 이화간호학회지 Vol.- No.37

        In spite of the seriousness of smoking harm has been developed these days. the increase of national smoking rate and that the people in the twenties are especially leading the rise of national smoking rate is an important issue of national health. Smoking of the university students can occur health problem and cause loss of manpower and expenses in their social activity period. So then the actual state for prevention of smoking and development of a program to prohibit smoking has to be seized urgently and starting with the study of the realities of university students, the effort to find a related fluent of smoking has to be studied. Related to this, the purpose of this study is to seize the general characteristics of smoking university students and to find out the relationship between perceived stress and smoking status among smoking university students. In addition, by collating the relationship between perceived stress and smoking status among smoking university students we have the purpose to furnish the basal data of stress care, the best way to cope with stress through group training and the plan for nursing implementation to decrease the smoking rate. For this study, a survey was conducted for 204 smoking university students of 13 universities in Seoul from 9th of May to 16th of May, 2003. The collected data was analyzed by t-test, Pearson Correlation and ANOVA in the statistical packages SPSS/PC. Major findings of this study are as follows; 1. Of the 204 respondents 85.4% of them were male and 14.6% of them were female. The average age of the sample was 23.19 years old and 41.8% of them were in senior, 21.4% in junior, 16.9% in sophomore, 19.9% in freshman grade. The major motivation to start smoking was 'because of curiosity'(33.8%) and the first smoking experience was at 'senior high school' (41.9%) and at 'college' (41.9%). 2 The highest scored stress factor of smoking university students were stresses about school work. 3. 72.7% had experience to quit smoking at least one or more times. Most of the reason to keep on smoking was 'short will to quit'(51.0%) and the smoking place was usually at 'school' (41.4%). Most respondents for the number ofsmoking friends were '5 people and above' (73.2%). 4. There was a negative relationship between the general characteristics and the entire perceived stress, however, there was a positive relationship between the general characteristics and the perceived stress in 4 categories which is 'sex distinction', 'major of study', 'residence form' and' inmate'. 5. There was a negative relationship between the general characteristics and the entire smoking status, however, there was a positive relationship between the general characteristics and the smoking status in 2 categories which is 'presence of hobby' and 'number of smoking friends'. 6. There was a negative relationship between the perceived stress and the smoking status. Through this study we have seized the relationship between the general characteristics, perceived stress and the smoking status of smoking university students. There was a positive relationship between some of the general characteristics with the perceived stress and the smoking status of smoking university students. Also there was a negative relationship between the perceived stress and the smoking status.

      • 애착 이론과 그 영향에 대한 고찰

        황혜자,조수진 東亞大學校 2005 東亞論叢 Vol.42 No.-

        This study examines attachment theory, and increases understanding of it by comparing with psychoanalysis theory. We have gone over previous research results and looked at what influence attachment has throughout an individual's life-span. Attachment theory is a theory that conceptualizes people's tendency to feel attachment to certain people, and explains various emotional trauma and personality disorder which is accompanied by unwanted separation or loss from an attachment object. Attachment theory thinks of attachment as a person's first drive in comparison to psychoanalysis theory, and gave much information such as various patterns of attachment, conditions of secure attachment, development of attachment throughout a person's lifespan, by focusing on the relationship between a mother and her child. Attachment has great affect on children's emotional development, social development and cognitive development. Also research shows that attachment has constancy throughout a person's lifespan, and influences self-identity, self-esteem, cognition of oneself and others, social relationships, independence and separation-individuation, adjustment, career development and career exploration, depression, anxiety, eating disorder, and coping with stress. Therefore attachment does not pertain only to children, but is a fundamental drive of a human being, and applying attachment theory to counseling has an important significance.

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