응급실에 내원한 환자에서 어지럼증의 원인과 임상양상의 분석

문원식,정경운,위준선,문정미,전병조,김용권,소정일,류진호,허탁,민용일 대한응급의학회 2001 대한응급의학회지 Vol.12 No.3

Background: Recently, The number of patients who have been complaining of the vertigo or dizziness has been increasing due to rapid growth of elderly population and senile disease. The differentiation of dizzy patients is not familiar to most emergency physicians. This study was designed to differentiate true vertigo and to investigate the clinical difference among central vertigo, peripheral vertigo, and other causes of dizziness. Methods: The authors analyzed the cases of 237 dizzy patients who visited the emergency department of Chonnam University Hospital during the recent 2 years. For the base of dizziness, associated past illnesses, severity, nystagmus type, and the causes of central and peripheral vertigo. Results: Female patients were 142(59.9%) and male patients were 95(40.1%). The most common age group was the 6th decade. The origin of dizziness was classified as peripheral cause(25.3%), central cause(32.9%), and others(41.8%). As to nature of the dizziness, the rotatory sense was dominant in peripheral vertigo and the floating sense and blurred vision in central vertigo. Peripheral vertigo was triggered by position change of head and body, and central vertigo by the eye movement. Audiograms I showed that most patients with central vertigo had normal hearing, but 46.7% of thoswith peripheral vertigo had an abnormal hearing disturbance. Nystagmus was more prevalent in peripheral vertigo Conclusion: History taking and physical examination played an important role in the diagnosis of dizzy patients. An important part of the diagnosis of a dizzy patient could be to evaluate the peripheral origin, the central origin and others causes. Because central vertigo may be associated with a significant neurological pathology, spectral radiological studies, including MRI and CT, are mandatory to rule out a devastating brain lesion.

공탄성시스템의 확률론적 제어에 대한 실험적 연구

김대중,박상태,정재욱,허훈,Kim, Dae-Jung,Park, Sang-Tae,Jeong, Jae-Uk,Heo, Hun 대한기계학회 1999 大韓機械學會論文集A Vol.23 No.11

A Newly proposed control methodology applied to the aeroelastic system experiencing flutter is investigated and its performance is verified experimentally. The flexible cantilever beam slicked with piezofilm sensor and piezoceramic actuator is modelled in physical domain. Dynamic moment equation for the system is derived via Ito's stochastic differential equation and F-P-K equation. Also system's characteristics in stochastic domain is analyzed simultaneously. LQG controller is designed and used in physical and stochastic domain. It is shown experimentally that the vibration of beam is controlled effectively by designed LQG controller in physical domain. By comparing the result with that of LQG controller designed in stochastic domain, it is shown that the new control method, called Heo-stochastic control technique, has better performance as a controller.

Impact of Interferon-Based Treatment on Quality of Life and Work Related Productivity from the Korean Cohort in the MOSAIC Study

( Sang Hoon Ahn ),( Won Hyeok Choe ),( Yoon Jun Kim ),( Jeong Heo ),( Dorota Latarska-smuga ),( Jiho Kang ),( Seung Woon Paik ) 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1

Aims: Chronic Hepatitis C Virus (HCV) infection increases the risk for progressive liver disease, hepatocellular carcinoma and negatively impacts the patient’s quality of life. HCV treatment is evolving with direct acting antivirals but IFN based therapy has been the standard of care for many years and remains available in some countries. The MOSAIC study aims to characterize patients with chronic HCV infection and assess the impact of IFN-containing treatment on health-related quality of life, work related productivity and health care utilization. Methods: MOSAIC is an international prospective multicenter observational study that has been conducted in 20 countries. Consecutive patients with chronic HCV infection were enrolled and those who initiated an IFN based regimen were prospectively followed for 48 weeks. We report results from the Korean cohort Results: 100 patients were enrolled: 86 were treatment naïve and 14 were treatment experienced. 33 patients initiated an IFN based regimen: 6 patients started IFN + RBV, 26 patients started Peg-IFN + RBV, none started Peg-IFN + RBV + DAA and 1 patient received other treatment. Among the treated cohort, demographic and disease characteristics were the following: the mean age was 54.5 years; 14 patients were male. 14 had minimal or no fibrosis, 2 portal fibrosis, 3 bridging fibrosis and 6 patients suffered from cirrhosis. HCV Genotype distribution was as follows: genotype 1: 11; genotype 2: 19 and genotype 3: 3. Table 1 describes the results at baseline and changes over 4, 12 and 48 weeks and end-of-treatment (EOT) for the quality of life and work productivity outcome measures (EQ-5D-5L, HCV-PRO and WPAI). Conclusions: Results from the Korean cohort of the MOSAIC study show a moderate trend for deterioration of health-related quality of life and work productivity associated with IFN based treatment for patients with chronic HCV infection during treatment period. Acknowledgements: The design, study conduct, analysis, and financial support of MOSAIC study were provided by AbbVie. AbbVie participated in the interpretation of data, review, and approval of the content of the abstract. All authors had access to all relevant data and participated in writing, review, and approval of this abstract. Medical writing support was provided by Olivier Van de Steen of Medeor-consulting, funded by AbbVie. Disclosures: Sang Hoon Ahn: served as an advisor and lecturer for Bristol-Myers Squibb, Gilead Sciences, F.Hoffmann-La Roche, Merck, AbbVie, and has received unrestricted grants from Bristol-Myers Squibb, Gilead Sciences, and F. Hoffmann-La Roche for investigator- initiated trials Won Hyeok Choe: Nothing to disclosure Yoon Jun Kim: Nothing to disclosure Jeong Heo: received a grant from GSK; Research support from BMS, and Roche; Advisor for Abbvie, BMS, Gilead Sciences, Pharma Essentia, SillaJen, and Johnson & Johnson. Dorota Latarska-Smuga, Jiho Kang: are employees of AbbVie, Inc. and may hold stock or stock options. Seung Woon Paik: received grant and research support from AbbVie, BMS, Gilead, GSK, Merck, Novartis, and Roche

신경회로망을 이용한 호 접수제어기

허정석,양성룡 울산대학교 1993 공학연구논문집 Vol.24 No.1

B-ISDN의 전송 및 교환 기법으로 정착되고 있는 ATM망의 폭주제어를 위하여, 신경회로망을 이용한 호 접수 제어기를 설계한다. 신경회로망을 이용한 호 접수제어는 가입자가 선언한 트래픽 기술인자의 불확실성에 대한 정보를 제어기가 가지고 있기 때문에, 실제 트래픽이 호 설정요구시 협약된 트래픽의 특성과 다소 상이하더라도 견고성(Robustness) 있는 트래픽 제어를 할 수 있는 장점을 가지고 있다. 본 연구에서는 신경회로망 제어기를 보다 효율적으로 학습시킬 수 있도록 두가지 학습 패턴 테이블(호 연결 요청 수락 패턴 테이블과 호 연결 요청 거절 패턴 테이블)을 이용하는 학습 알고리즘을 제안한다. 또한 모의 실험을 통하여, 제안한 신경회로망 호 접수 제어기의 성능을 분석한다. This paper describes a call admission controller by neural network to control the traffic in ATM network for service quality. Because the information of the traffic descriptor declared by users has a characteristic of uncertainty, the design and implementation of efficient controller in the network is very difficult task. The proposed ATM call admission controller by neural network is adaptive and easy to implement. We use two learning table for efficient learning of back-propagation neural network in controller. The performance of the proposed call admission controller is evaluated by simulation, and the results are compared with those of the other control technique.

노인의 운동참가 정도에 따른 신체적 자기개념

허정식 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.20 No.1

The purpose of this study was to examine the differences of physical self-concept according to the exercise participation level in old men. Total of 278 subjects over 60 years old (male: 182, female: 96) in Gunsan city participated in this study. The independent variables were exercise frequency and period of exercise time, and dependent variables was physical self-concept. The survey tools used in this study was the Physical Self-Concept questionnaire in korean version by Kim, Beuong-Jun(2001). The average and standard deviation were computed with the collected data according to the exercise participation(participation vs. non-participation) and sex(male vs. female) and the levels of exercise participation. The results were as follows; 1. The exercise participation group is higher than non-participation group in the sports capability, health, appearance, physical activity, self-respect, flexibility, endurance, muscle strength, general physical factors, but there is not difference in the fat/slenderness. 2. The male subjects group is higher than female group in the sports capability, physical activity, self-respect, flexibility, endurance, muscle strength, general physical factors, but there is not difference in the health, appearance, fat/slenderness. 3. There was significant difference in the factors of sports capability, endurance, muscle strength as a function of exercise frequency and period of exercise time level. 4. There was significant difference in the factors of appearance, health, self-respect, general physical factors according to period of exercise time level. 5. There was significant difference in the factors of physical activity, flexibility according to exercise frequency, but there is not difference in the fat/slenderness factor.

제14회 부산 아시아 경기대회 남자 태권도 경기 공격기술 및 득점 분석

허정석,황영성,박재성,김도호,한성유,이수판 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.4

The purpose of this study was to analyze attack skills and scores in 8 weight classes of male Taekwondo athletes who participated in the semi-final and final matches(48 athletes) in the 14the Asian Games(2002, Busan). The 14th Asian Games was chosen for this study because it is in these games that the rules were revised to a variable scoring system. The results obtained from this analysis were as follows; 1. There is a sinificant difference of attack skill frequency per Korean(Foreign) male athlete was 50.00(51.38) times and scores obtained were an average of 5.06(4.25) points per athlete. 2. There is a significant difference in attack frequency between the light weight group and heavy weight group of Korean and Foreign male athletes. Korean male athletes: Between groups, in case of momtong-dolryeochagi, naraechagi and tchikeachagi, the frequency of the light weight group was shown to be higher. The frequency of momtong-dolryeochagi was shown to be higher in the heavy weight group. 3. There is a significant difference in attack frequency between Korean male athletes and Foreign male athletes in the light weight group and heavy weight group. The light weight group: Between groups, in case of momtong-dolryeochagi and eolgul-dolryeochagi, the frequency of Korean male athletes was shown to be higher and in case of naraechagi, dwitchagi and dolgaechagi, the frequency of Foreign male athletes was shown to be higher. The heavy weight group: Between groups, in case of and eolgul-dolryeochagi, naraechagi and dwitchagi, the frequency of Korean male athletes was shown to be higher and in case of momtong-dolryeochagi, tchikeachagi and dolgaechagi, the frequency of Foreign male athletes was shown to be higher.

열 전처리에 의한 섬유소분해효소생산 미생물의 선발

정허진,김훈,김정호 順天大學校 1996 論文集 Vol.15 No.1

30 개의 토양과 퇴비 시료로 부터 섬유소 분해효소를 생산하는 3 종류의 미생물을 분리하였다. 분리는 carboxymethyl-cellulose (CMC)를 함유하는 고체 평판배지를 이용하였으며, 분리된 3 종류 중 2 종류 (H12, H15)는 열 전처리한 시료로 부터, 1 종류 (N01)는 열 전처리하지 않은 시료로 부터 얻어졌다. H12와 H15의 섬유소분해활성은 N01보다 높은 것으로 조사되었다. H12와 H15는 액체배지에서 배양한 경우 37℃와 42℃에서 균체증식과 CMCase 생산이 좋았다. N01은 37℃에서는 잘 자라지 못 하였고, 42℃에서는 H12, H15와 비슷하게 성장하였으나 효소 생성은 거의 없었다. H12와 H15 균주에서 CMC 첨가에 따른 효소 생성의 유도는 전혀 관찰되지 않았다. 분리된 3 균주를 TSB에서 배양한 결과 LB 배지에서 보다 적어도 2배 이상의 많은 CMCase를 생산하였다. 이상의 결과는 시료의 열 전처리가 CMCase를 생산하는 균주를 선발하는 데 보다 좋은 방법일 수 있음을 시사한다. Three microorganisms producing carboxymethyl-cellulase (CMCase) were isolated from 30 soil and compost samples. CMCase activity, on plates containing CMC, of the two isolates, H12 and H15, screened by heat-pretreatment procedure, was higher than that of N01, the one screened by nonheat-treatment procedure. H12 and H15 were able to grow and produce the enzyme well at 37 and 42℃ in liquid culture media. N01 did not grow well at 37℃ but could grow moderately at a little higher temperature, 42℃. However, N01 did not produce CMCase in liquid culture media at 42℃. For H12 and H15, addition of CMC to the media did not increase the production of CMCase at all. All of the three isolates produced at least about 2 times higher CMCase activity in TSB medium than in LB medium. From these results, it is suggested that heat-pretreatment of samples can provide a better way of screening CMCase producing strains.

세계화와 지식기반경제시대에서의 경제교육 담당교사들의 경제인식 능력 및 경제의식 조사 연구

허인숙,최병모,김정호 경북대학교 사범대학 부속 중등교육연구소 2005 중등교육연구 Vol.53 No.2

세계화와 지식기반경제 사회에서 요구되는 시민을 육성하기 위해서는 실질적인 경제교육의 주체라 할 수 있는 경제교육 담당교사들에 대한 객관적이고 실증적인 조사가 무엇보다 먼저 이루어져야 한다고 본다. 이러한 필요성을 인식하여 본 연구는 현행 학교교육에서 경제교육 담당교사들에 대한 경제인식 능력과 경제의식을 파악하여 교사들의 세계화와 지식기반경제시대에 대한 현 좌표를 살펴보고, 교사훈련기관인 사범대학이나 교육대학의 교육과정과 교사교육 연수프로그램에 있어서의 개선점에 대한 시사점을 찾아 세계화와 지식기반경제시대에서 요구되는 바람직한 경제교육의 방향을 모색하는데 있다. 본 연구의 목적 달성을 위해 경제교육 담당교사들의 경제인식 능력 및 경제의식에 대한 조사는 네 가지 영역, 즉 '대학시절과 연수과정에서 이수한 경제관련 과목에 대한 내용', '세계화와 지식기반사회에서의 우리 경제현안에 관련된 내용', '지식기반사회에서의 정보소양 능력에 관련된 내용', 그리고 '세계화시대에서의 경제소양에 관련된 내용'으로 이루어졌고, 이 네 가지 영역에 대한 조사는 전국 초 · 중 · 고등학교 경제교육 담당교사를 대상으로 설문지를 통해 이루어졌다. 연구조사를 통해 얻어진 결론은 우선 직전교육을 담당하는 대학의 교육과정뿐 아니라 교사들에게 새로운 경제 환경을 올바르게 인식할 수 있도록 미리 대비시키는 연수과정이 매우 불충분 한 것 같다. The purpose of this study intends to understand the economic recognition and awareness of economic teachers in the present school education field, to inspect the present aspects of the age of globalization and knowledge-based economy, to seek the suggestion of the improvements in the curriculum and training program of the institute of teacher training, and to explore the direction of the good economic education to be demanded at the age of globalization and knowledge-based economy. To achieve the purpose of this study, the survey of the economic recognition and awareness of economic teachers was implemented through the four areas, that is, the content of the economic curriculum to complete in the college course and training program, the content of the outstanding questions of our economy at the age of globalization and knowledge-based economy, the content of information literacy at the age of knowledge-based society, and the content of economy literacy at the age of globalization. These four areas was investigated through survey as the subjects of the economic teachers of elementary, middle, and high school.

二次元 彈性有限要所解析에서의 效果的인 Mesh 構成에 관한 硏究

허정환,양원호 成均館大學校 科學技術硏究所 1991 論文集 Vol.42 No.1

Finite element method is widely used in analysis of engineering problems such as mechanical design and structural analysis. Recently, its use has been increased according as its rapid developement of theory, computer hardware and good general-purpose sotfwares. Due to such developement, complex and various engineering problems are analyzed quickly. But, because much cost are consumed in preprocessing, applicative efficiency of finite element analysis doesn't come up to such development. And finite element analysis depends upon experience of user in modeling, mesh design and analytic method. Therefore, user must be accustomed to use finite element method which is a burden to designer and user. Thus automatization of adaptive mesh generation is imperative to reduce much cost. There are many kinds of the method for automatic mesh generation such as node connection method, mapping method, cell decomposition method, etc. In this study, however, discrete transfinite mapping were used. And C language was used in automatic mesh generation routine. Error indicator and error estimator are defined using error of energy norm. Synthetic results of above study are as follows 1) The mesh which has good correlation with boundary curve is obtained using discrete transfinite mapping. 2) User input error can be minimized by minimum input data. 3) Fine mesh is easily generated using weight value, therefore drawback of discrete transfinite mapping method is settled. 4) User can easily use the program using pull-down menu and and pop-up window. 5) Mesh refinement well be applicated in stress concentration problems.

어머니의 언어통제 유형 및 유아의 정서조절능력과 유아의 공격성의 관계

허정묵,권민균 啓明大學校 生活科學硏究所 2006 科學論集 Vol.32 No.-

The purpose of this study was to examine young children's aggression in consideration of the maternal verbal control patterns as an environmental factor and the young children's emotional control abilities as individual characteristics. The participants of this study were 380 3-year-old children of an urban city, the 380 children's mothers and 25 teachers of the children. The measurement tools were the maternal verbal control patterns of Bernstein(1971) and Gumperz(1973), Children's Emotional Intelligence Checklists(Lee, 1997) and the children's aggression observation scale developed by Han(2000). With the SPSS Win 10.0, the Pearson's product moment correlation coefficients and multiple regression analysis were computed in order to find the relationships between the maternal verbal control patterns and children's emotional control abilities with children's aggression. The results of the analyses were as follows. First, the demand oriented and position oriented maternal verbal control patterns had positive correlations with children's aggression. Second, the children's emotional control abilities had negative correlations with children's aggression. Third, the maternal verbal control patterns and children's emotional control abilities together predicted 75.9% of the children's aggression. This study suggests that not only the maternal verbal control patterns but also the children's emotional control abilities are significantly related with the young children's aggression.