야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로

조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.

국산 Avana 인공치아와 외국산 ITI 인공치아의 악골조직내 적합성에 관한 비교연구

유재하,이지웅,백성흠,정원균,김종배 大韓顎顔面成形再建外科學會 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.6

The purpose of this article is to confirm the longterm biocompatibility of national Avana implant and international ITI implant in dogs. At the fourth month after extreaction of the mandibular third and fourth premolar in three dog, both implants were inserted using careful atraumatic technique and prosthetic abutments were applied onto the implants in three months. After that, the implants were examined by naked eye and radiographic image every three months during 1 year, for detection of the complications, such as, mobility, bone resorption and wound infection. At 1 year after application of prosthetic abutment, the dogs were sacrificed for the histopathologic analysis by light microscope. The results obtained were as follows; 1. All implants had the ralatively good prognosis without mobility, wound infection and moderate bone resoprtion, in clinical and radiological evaluation during one year. 2. The all histopathologic specimens at one year after application of prosthetic abutment onto the implants showed the distinct osseointegration between implant system and bone, with projection of new bone apposition onto the peri-implant tissue. But Avana implants had the less osseointegration than ITI implants in the cancellous and marrow layer of jaw bone. 3. The all histopathologic specimens at one year after application of prosthetic device showed the firm junction by dense connective tissue pattern between the implant and the gingival portion. But Avana implants had the less firmer junction than ITI implants. 4. The authors confirmed that Avana implant and ITI implant have more higher tissue biocompatibility in dental implantation, but ITI implant has the more osseointegration than the Avana implant.

안전한 이동 에이전트를 위한 게이트웨이의 설계

元裕獻,朴宰卿,朴宰必 弘益大學校 科學技術硏究所 2001 科學技術硏究論文集 Vol.12 No.-

In the course of Internet proliferation, many network-related technologies are examined for possible growth and evolution. The use of Internet-based technologies in private networks has further fuelled the demand for network-based applications. The most promising among the new paradigms is use of mobile agents. The mobile agent is capable of migrating autonomously from node to node in the network, to perform some computation on behalf of the user. The mobile agent paradigm is attractive alternative to traditional client-server programming for a significant class of network-centric applications. It also however, suffers from a major drawback, namely, the potential for malicious attacks, abuse of resources pilfering of information, and other security issues. These issues are significantly hampering the acceptance of the mobile-agent paradigm. This paper describe the design & implementation of secure mobile agent gateway that split and merge the agent code with security policy database. This mechanism will promote the security in mobile agent systems and mobile agent itself.

동일한 환자에서 조혈모세포이식 전후의 호중구감소 기간 중 감염양상에 대한 비교연구 : 중심정맥관 관련 패혈증을 중심으로 Based on Central Venous Catheter Related Septicemia

류재호,노규태,이영석,이영호,권혁찬,김재석,김효진,이영민,박혜원,박근희 대한조혈모세포이식학회 2002 대한조혈모세포이식학회지 Vol.7 No.1

연구배경: 동일한 환자를 대상으로 조혈모세포이식 전 일반 병실에서의 관해유도 항암제치료 및 강화요법으로 인한 호중구감소 기간의 감염양상과 고용량 항암제치료 후 무균실에서의 조혈모세포이식 시 호중구감소 기간의 감염양상을 중심정맥관 관련 패혈증을 중심으로 비교 연구함으로써 효율적인 감염관리지침을 마련하고자 하였다. 대상 및 방법: 1999년 1월부터 2001년 7월까지 2년 7개월간 동아대학교병원 일반병실에서 악성혈액질환으로 항암제 치료를 받다가 조혈모세포이식을 시행받았던 22명을 대상으로 중심정맥관 관련 패혈증의 형태를 비교분석하였다. 결과: 대상 환자들의 일반병실과 무균실에서의 입원기간은 각각 32±13일, 33±19일, 호중구 감소기간은 15±12일, 17±18일, 호중구 감소기간의 발열 횟수는 14회, 14회로서 입원병실의 종류에 따른 차이는 없었다. 환자들의 중심정맥관 사용일수는 일반병실에서 29일(7~545일), 무균실에서 100.5일(25~606일)이었으며, 총 사용일수는 각각 1,515일, 3,250일로서 무균실에서의 중심정맥관 사용일수가 의미 있게 길었다(P=0.001). 중심정맥관 사용 일수에 대한 감염률은 각각 5.28/1,000일, 3.08/1,000일로서 일반병실에서 그 빈도가 높았으나 통계적 유의성은 보이지 않았다(P=0.141). 결론: 중심정맥관 삽입 후 일반병실에서 항암제 치료를 받던 환자가 조혈모세포이식을 위하여 무균실에 입원하는 경우, 중심정맥관을 교체하는 것이 감염관리를 위하여 바람직할 것으로 생각된다. Background: We compared the incidence of central venous catheter (CVC) related septicemia during neutropenic period in the same patient, which developed following chemotherapy for remission induction and consolidation, or hematopoietic stem cell transplantation (HSCT). Methods: We retrospectively reviewed the medical records and laboratory data of 22 patients with hematologic malignancies who received anticancer chemotherapy followed by HSCT at Dong-A University Hospital between January, 1999 and July, 2001. We investigated the duration of hospitalization, duration of neutropenic period, duration of catheterization, microbiologically documented organisms and incidence of CVC related septicemia. Results: The data in general ward (before HSCT) and laminar air flow room (after HSCT) were as follows: duration of hospitalization was 32±13 days and 33±19 days, duration of neutropenic period was 15±12 days and 17±18 days, median duration of catheterization was 29 days (7~545 days) and 100.5 days (25~606 days) (P=0.001), and incidence of CVC related septicemia was 5.28/1000 days and 3.08/1000 days, respectively. In the CVC related septicemia, the most common etiologic organism was coagulase negative staphylococcus. Conclusion: We suggest that the exchange of CVC before admission to laminar air flow room could decrease the incidence of CVC related septicemia in HSCT recipients.

청주시의 권력구조와 정치과정

유재원 나남출판 1999 정부학연구 Vol.5 No.1

지방자치와 지방행정 : 청주시의 변화 A Changing Evolution of Cheong-Ju City

유재원 高麗大學校 行政問題硏究所 1996 行政과 政策 Vol.- No.2

지방의원의 대표성 확립방안

유재원 한양대학교 사회과학대학 2001 社會科學論叢 Vol.20 No.-

이 글은 대의민주주의의 원리에 입각하여 지방의원의 대표성 확립방안을 모색한다. 대의민주주의는 선출된 대표를 통해 시민의 지배를 구현하려는 민주주의 체제이다. 따라서 대의민주주의의 기본과제는 선출된 대표가 시민의 이익을 위해 봉사하고 그들에 대해 책임지도록 만드는데 있다. 이를 위해 대의민주주의는 몇 가지 기본적 전제의 충족을 요구한다. (1) 시민은 자신의 권익을 대변할 후보를 판별할 수 있는 능력이 있어야 하며, (2) 선거는 시민들과의 약속을 배반한 대표들을 징벌할 수 있는 효과적인 장치로서 기능해야 하며, (3) 정부기관들과의 권력분립이 이루어져야 한다. 특히 대의기관인 의회가 집행부를 제대로 견제하고 감시할 수 있도록 집행부와 의회간에 권력의 균형이 이루어져야 한다는 것이다. 이 글에서는 이러한 전제를 충족시키는 것이 대표성을 확립하는 방안이 된다는 전제하에 여러 가지 정책제안을 하였다. 그러한 정책대안에는 직능대표제의 도입, 여성할당제의 실시, 교사에 대한 의원직 겸직제한 규정 철폐, 정당공천제 폐지, 의원선거와 자치단체장 선거 분리, 유급제와 선거공영제의 확대가 포함되었다.

지방관료제에 대한 외부행위자들의 영향력 분석

유재원 한국정책학회 2002 韓國政策學會報 Vol.11 No.4

이 연구는 전국 자치단체의 핵심과정들을 대상으로 실시된 설문조사를 통해, 다양한 외부 행위자들이 지방관료제의 행위와 정책에 미치는 상대적 영향력을 평가하였다. 도출된 결론은 지방관료제는 다양한 외부행위자들로부터 행사되는 거미집처럼 얽히고 설킨 영향력의 다차원적인 맥락 하에서 가능하지만, 그럼에도 불구하고 지방관료제에 지배적인 영향력을 행사하는 것으로 평가된 행위자는 단체장이다. 외부 행위자들의 영향력에 대한 관료들의 평가에 의하면, 단체장은 기업, 지역유지, 이익집단, 정당, 언론을 비롯한 지방정부의 사회경제적 세력은 물론 심지어 상위정부보다도 지방관료제에 높은 영향력을 행사하고 있다. 단체장의 영향력에 관한 회귀분석은 또한 지방관료제에 대한 단체장의 영향력을 제약하기는 어려워도 촉진시키기는 용이함을 실증한다. 이러한 실증결과들은 한국 지방정부의 권력구조는 단체장이 지방권력 계층의 정점에 서서 지방관리제를 지배하는 단체장 독두체제라는 기존의 사례연구의 결론을 지지하는 것이다. This research compared among the degree of influence exerted by each of major external actors upon the actions and policies of local bureaucracy. External actors included for the assessment was nine groups. They encompass mayors, local council, local business and economic elites, interest and clientele groups, political parties, local media, the general public, and two intergovernmental actors of central and regional governments. Responses of mid-level managers of local government to mailed questionnaire survey were used for the evaluation. One of conclusions drawn from the analysis is that mayors were evaluated as the most influential actor in local policy and political processes. Further a regression analysis exploring 1,he sources of 'variation in majors' extent of influence upon local bureaucracy indicates that though difficult to restrain mayors' influence upon local bureaucracy, it is relatively easy to facilitate it. All these demonstrate that power structure of Korean local government is mayor-dominated, in which mayors reign supreme at the most upper layer of local power ladders.

수련인원의 규모에 따른 태권도장의 경영요인 분석

유재원 한국스포츠리서치 2005 한국 스포츠 리서치 Vol.16 No.2

This study aims to provide the guiding principles for the improvement of the awareness of the leaders to activate the management of the gymnasiums by making a comparative analysis of the differences in the awareness of the educational environment, the educational programs, and the qualities of leaders of Taekwondo training halls on the basis of the sizes of the number of the trainees. The materials of the study have been collected from those training halls which have been operated for more than 5 years and which have fewer than 100 trainees, fewer than 100-150 trainees, and more than 150 trainees. The measured materials have been analyzed by using One-Way ANOVA. The following conclusions have been drawn from the findings of the study: The analysis of the differences in the awareness of the educational environment, the educational programs, and the qualities of the leaders has shown that, in terms of the educational environment, the awareness of the importance of the remaining 28 factors except the head and body protectors and computers, is higher in the training halls with trainees fewer than 100- 150 and more than 150 than in the training halls with trainees fewer than 100. In terms of the educational programs, the differences in the awareness by the sizes of the number of the trainees have not been observed. In terms of the qualities of the leaders, the awareness of the importance of the remaining 16 factors except the ability to use languages is higher in the training halls with trainees fewer than 100-150 and more than 150 than in the training halls with trainees fewer than 100. After considering all, the findings of this study suggest that the awareness of the educational environment, the educational programs, and the qualities of the leaders may be different according to the sizes of the number of the trainees. In particular, it is necessary for the leaders to grasp the awareness of the educational environment, the educational programs and the qualities of the leaders and take it into account so that the efficiency of the management of Taekwondo training halls may be maximized.

크리깅 기법을 이용한 마이크로 믹서의 최적 설계

박재용,김상락,이원구,유진식,김용대,한석영,맹주성 한국공작기계학회 2007 한국공작기계학회 추계학술대회논문집 Vol.2007 No.-

An active micro-mixer, which was composed of an oscillating micro-stirrer in the microchannel to provide rapid, effective mixing at high flow rates was analyzed. The effects of molecular diffusion and disturbance by the stirrer were considered with regard to two types of mixer models: the simple straight microchannel and microchannel with an oscillating stirrer. Two types of mixer models were studied by analyzing mixing behaviors such as their interactionafter the stirrer. The mixing was calculated by Lattice Boltzmann methods using the D2Q9 model. In this study, the time-averaged mixing index formula was used to estimate the mixing performance of time-dependent flow. The mixing indices of the two models were compared. From the results, it was found that the mixer with an oscillating stirrer was much more enhanced and stabilized. Therefore, an optimum design for a dynamic micro-mixer with an oscillating stirrer was performed using Kriging method in order to obtain a optimum solution. The design parameters were established as the frequency, the length and the angle of the stirrer, and the optimal values were determined to be 2.0932, 0.8D and ± 75°, respectively. It was found that the mixing index of the optimal design increased by 88.47% compared with that of the original design.