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

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.

형광등과 발광다이오드의 혼합광 조사가 아게라텀, 메리골드 및 살비아 실생묘의 생장 및 형태형성에 미치는 영향

허정욱,이춘우 충북대학교 첨단원예기술개발연구센터 1999 연구보고서 Vol.4 No.-

One of the factors to decide seedling quality has been known to control the plant height on production of plug seedlings. The growth inhibitor, physical stimulation, or DIF technique for controlling the plant height was commonly used. The experiment was conducted by mixing light with fluorescent lamps and Blue, Red, and Far-red Light-Emitting Diodes (LEDs) as a light source to investigate the effects of light quality on the growth and morphogenesis of flowering plants. Ageratum (cv. Blue Field), Marigold (cv. Orange Boy), and Salvia (cv. Red Vister) plants which developed with two true leaves were placed for 70 days in growth chamber, where air temperature and relative humidity were maintained at 25℃ and 70%, respectively. Photosynthetic photon flux on the culture shelf was kept at 10 μmol m-2 s-1, and photoperiod was provided at 16 h per day. In FL+Blue, FL+Red, and FL+Far-red treatments, total dry weight of Salvia plants was above 2 times greater than in FL treatment. Plant height of the flowering plants was the tallest in mixing light treatment with fluorescent lamp (FL) and Far-red LED. The plant height in all the plants was not significantly different between the FL treatment and the mixing light treatment with FL and Red LED. Number of flowers in Marigold and Salvia plants was not significantly different in all the treatments. Flowering rate of Ageratum plants on day 70 was 100% in all the treatments regardless of light qualities, although Marigold plants never bloomed in FL+Blue and FL+Far-red treatments during the culture period.

사회복지시설 종사자의 근로실태를 통해 본 복지행정의 문제점과 그 개선방안

허병도,감정기 慶南大學校法學硏究所 2004 慶南法學 Vol.19 No.-

Korea's Constitutional Law regulates the realization of a welfare state's ideology as a responsibility and obligation of the state. Welfare institutions play a very important role in this realization as the workers in these places accomplish this. However, workers in the social welfare work under unsatisfactory conditions and for low wages. The reason for this is that politicians in South Korea failed to appropriate properly the funds in the budget for them. In general, politicians do not understand enough about social welfare and the administration is still under a kind of authoritarianism. So their welfare administration cannot exercise their just rights. Certain things need to be done. First, employers must pay proper wages to workers of the social welfare service institutions in proportion to the quality and quantity of their work. Also, the government must budget adequate funds so that employers observe legal working conditions. Many parts of the administration guidelines differ from the Labor Standards Law, and thus revisions are required so that the operation of these institutions is self-regulated and does not un in opposition to the law. In addition, the workers of welfare institutions who want to keep their rights and interests themselves must exercise labors' three basic rights pertinently, but they also must make propositions to persuade the government. These kinds of efforts will be better as labor unions solidify solidarity with industrial unions. In this case, workers had better not disregard the fact that healthy labor union activities must not harm the clients of the institutions. I hope the government is very considerate to workers even before they engage in violent struggles and treat them well so that they do not need to oppose the law. This will help workers pour out their passion into their duties and responsibilities instead of into exercising their rights.

선택적 버퍼링을 이용한 MPEG 비디오 스트림 다중화 기법

허정석,윤상호,김명균 울산대학교 2000 공학연구논문집 Vol.31 No.1

ATM 망에서 MPEG 비디오 스트림은 CBR과 VBR 서비스를 이용하여 전송한다. 그러나 MPEG 스트림 트래픽은 시간에 따라 크게 변하는 특성을 가지고 있어 대역폭을 낭비하지 않고 효율적으로 전송하는 것은 매우 어렵다. 지금까지 하나의 MPEG 비디오 스트림의 트래픽 특서 및 제어에 대한 연구는 많은 연구자들에 의해 이루어져 왔지만 여러 개의 MPEG비디오 스트림이 다중화기에 의해 다중화된 트래픽의 특성 및 제어에 대한 연구는 이루어지지 않았다. 본 연구에서는 이러한 다중화기에 의해 다중화된 프래픽의 가변성 및 최대 셀 전송률을 줄이기 위한 다중화 방법을 제안한다. 다중화 트래픽의 최대 셀 전송률을 줄임으로써 이러한 트래픽을 가능한 대역폭의 낭비를 줄이면서 효율적으로 전송할 수 있게 된다. On ATM networks, MPEG videl stream is transferred using CBR or VBR services. But, because the MPEG video traffic varies greatly from time to time, it is very difficult to transfer the MPEG stream efficiently without loss of transmission bandwidth. Until now, the study on the traffic analysis and control on a single MPEG videl stream has been done by many researchers, but the trafic analysis and control on a multiplexed traffic of multiple MPEG video streams has not been studied by any researcher. This paper proposes a multiplexing method to reduce the PCR and traffic variance of a multiplexed traffic of multiple MPEG video streams. By reducing the PCR of the multiplexed traffic, the multiplexed VBR traffic can be transferred efficiently with less loss of transmission bandwidth.

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.

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.