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

입자상 오염물질의 대기환경기준에 관한 연구

허정숙,남보현,황인조,김동술 경희대학교 환경연구소 1999 環境硏究 論文集 Vol.9 No.-

We provide various fundamental statistics for PM-10 based on air quality monitoring data('96-'98) operated by the Ministry of Environment. The purposes of this paper are to examine the distribution of PM-10 level computed on the basis of a reference method adapted by USEPA and to review national ambient air quality standards for particulate matter in Korea. When we calcualted the 3-year('96-'98) average of the annual mean PM-10 concentrations at 24 monitoring sites. 21 sites were not met 50㎍/m(annual PM-10 standard in USA). Especially. Duckchon-dong and Shinpyung-dong sites at Pusan were recorded the highest concentration. Also, when we considered the 3-year average of the 99^(th) percentile values, 14 sites including Ssangmun-dong at Seoul and Duckchon-dong at Pusan among 23 were classified non-attainment area exceeding 150㎍/m(24-hour PM-10 standard in USA). We suggest that the air quality standards for PM-10 and PM2.5 in Korea must be actually regulated based on scientific review and the public health.

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.

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.

지혈제 오염이 콤포머의 전단결합강도에 미치는 영향

허정무,곽주석,이황,이수종,임미경 大韓齒科保存學會 2002 Restorative Dentistry & Endodontics Vol.27 No.2

One of this latest concepts in bonding are "total etch", in which both enamel and dentin are etched with an acid to remove the smear layers, and "wet dentin" in which the dentin is not dry but left moist before application of the bonding primer. Ideally, the application of a bonding agent to tooth structure should be insensitive to minor contamination from oral fluids. Clinically, contaminations such as saliva, gingival fluid, blood and handpiece lubricant are often encountered by dentists during cavity preparation. The aim of this study was to evaluate the effect of contamination by hemostatic agents on shear bond strength of compomer restorations. One hundred and ten extracted human maxillary and mandibular molar teeth were collected. The teeth were removed soft tissue remnant and debris and stored in physiologic solution until they were used. Small flat area on dentin of the buccal surface were wet ground serially with 400, 800 and 1200 abrasive papers on automatic polishing machine. The teeth were randomly divided into 11 groups. Each group was conditioned as follows: Group 1: Dentin surface was not etched and not contaminated by hemostatic agents. Group 2: Dentin surface was not etched but was contaminated by Astringedent® (Ultradent product Inc., Utah, U.S.A.). Group 3: Dentin surface was not etched but was contaminated by Bosmin®(Jeil Pharm, Korea).). Group 4: Dentin surface was not etched but was contaminated by Epri-dent®(Epr Industries, NJ, U.S.A.). Group 5: Dentin surface was etched and not contaminated by hemostatic agents. Group 6: Dentin surface was etched had contaminated by Astringedent®. Group 7: Dentin surface was etched and contaminated by Bosmin®. Group 8: Dentin surface was etched and contaminated by Epri-dent®. Group 9: Dentin surface was contaminated by Astringedent®. The contaminated surface was rinsed by water and dried by compressed air. Group 10: Dentin surface was contaminated by Bosmin®. The contaminated surface was rinsed by water and dried by compressed air. Group 11: Dentin surface was contaminated by Epri-dent®. The contaminated surface was rinsed by water and dried by compressed air. After surface conditioning. F2000® was applicated on the conditoned dentin surface. The teeth thermocycled in distilled water at 5℃ and 55℃ for 1,000 cycles. The samples were placed on the binder with the bonded compomer-dentin interface paralled to the knife-edge shearing rod of the Universal Testing Machine(Zwick Z020, Zwick Co., Germany) running at a cross head speed of 1.0mm/min. Group 2 showed significant decrease in shear bond strength compared with group 1 and group 6 showed significant decrease in shear bond strength compared with group 5. There were no significant differences in shear bond strength between group 5 and group 9, 10 and 11.

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.

태권도 프로그램이 정신지체아동의 인지기능 발달에 미치는 영향

허정석,황영성,한성유,이수판,안인준 釜山大學校 附設 體育科學硏究所 2006 體育科學硏究所 論文集 Vol.22 No.1

The purpose of this study was to determine the effect of the Taekwondo program on cognitive competence of children with mental retardation. The subjects were 18 children with mental retardation. The children were devided into two groups. One group(n=9) was in an experimental group and the other group(n=9)was a control group. To find out any changes of their cognitive competence, the Taekwondo program was executed to the exercise group three times a week, for forty minutes a day over ten weeks......

제14회 부산 아시아 경기대회 여자 태권도 경기 공격기술 및 득점 분석

허정석,황영성,박재성,김도호,한성유,이수판 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.2

The purpose of this study was to analyze attack skills and scores in 8 weight classes of female Taekwondo athletes who participated in the semi-final and final matches(48 athletes) in the 14th 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. Korean female athletes: No significant difference was found in attack frequency in the light weight class and the heavy weight class. The attack frequency in the light weight class was shown to be in the following order: momtong-dolryeochagi(217 times), naraechagi(48 times) and dichagi(15 times). The attack frequency in the heavy weight classwas shown to be in the following order: momtong-dolryeochagi(263 times) and tchikeachagi(15 times). 2. Foreign female athletes: No significant difference was found in attack frequency in the light weight class and the heavy weight class. The attack frequency in the light weight class was shown to be in the following order: momtong-dolryeochagi(555 times), naraechagi(32 times) and dichagi(12 times). The attack frequency in the heavy weight class was shown to be in the following order: momtong-dolryeochagi(555 times), tchikeachagi{35 times) and naraechagi(35 times). 3. There is a significant difference in attack frequency in the light weight group of Korean female athletes and foreign female athletes, Between groups, in case of quick body attack, such as momtong-dolryeochagi and naraechagi, the frequency of korean athletes was shown to be higher and scores obtained were higher. In case of high score face attack, such as eolgul-dolryeochagi and tchikki, the frequency of foreign atheletes was shown to be higher 4. There is a significant difference in attack frequency in the heavy weight group of Korean female athletes and foreign female athletes, Between groups, in case of quick body attack, such as momtong-dolryeochagi and naraechagi, the frequency of Korean athletes was shown to be higher and the foreign female athletes' eolgul-dolryeochagi and dwitchagi score rates were shown to be the higher.