DP-Matching과 HMM을 이용한 온라인 필기 한자 인식

윤병훈,김형태,하진영 강원대학교 정보통신연구소 2007 정보통신논문지 Vol.11 No.-

On-line handwritten Chinese character recognition systems should be fast and yield accurate results in order to be practical systems. DP-matching method for variable length input requires building several allographs (multiple models) per class, which inevitably reduces the recognition speed. HMM is a good alternative, since one HMM per class is usually sufficient to model large variation of data. We proposed a recognition system in which HMM and DP-matching method are combined to improve the recognition speed and recognition accuracy at the same time. The HMM method using structure code features produces recognition candidates, then DP-matching method using chain code features reorders the candidates to get more accurate results. In doing so, we accomplished fast and accurate recognition results for 2,362 Chinese character classes. We also adopted result verification method to discriminate confusable character classes. We got 97.44% recognition accuracy using the proposed method in 113 ms per character in average.

정신분열병 환자에서 존속살인의 임상적 특성

안병훈,최상섭,안성호,하태현,김선범,권경희,김정현 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.4

Objectives : This study aimed to describe the demographic, clinical and offense characteristics of the patients with Schizophrenia who committed parricide. This study also investigated the risk factors of parricide by comparing with characteristics of stranger killers to prevent the tragic offense. Methods : The sample consisted of 88 schizophrenic patients who committed homicide, 59 of them committed parricide and 29 of them killed strangers. Medical chart review regarding demographic and clinical characteristics as well as offense Characteristics was conducted. The information that was difficult to be obtained through chart review was acquired by direct interview. Results : Parricide group had earlier age of onset, more conflicts with the victims, more violence history toward victims and more offense provoking events than stranger killing group. Parricide group showed higher rate of past treatment than that of stranger killing group. However drug compliance at the time of offense was low in both groups. Offense provoking events in the parricide group included blaming, threatening a forced hospitalization or medication toward patients. The most common Psychiatric symptoms associated with homicide were threat/control override (TCO) symptoms, delusional perception, commanding auditory hallucination and especially with parricide, Capgras syndrome (CS). Conclusion : Interaction between psychotic symptoms such as TCO, CS and underlying emotion toward victims are likely to be associated with parricide. Mental health professionals are expected to play an important role in preventing this tragic offense by active history taking of the violence and effective management with active caregiver education/intervention of intrafamilial conflicts.

문자 단위 매칭과 유닛 단위 매칭을 이용한 온라인 필기 한자 인식

윤병훈,김형태,박미나,하진영 강원대학교 정보통신연구소 2006 정보통신논문지 Vol.10 No.-

This paper presents on-line Chinese character recognition methods based on DP-Matching. The recognition system consists of character matching and unit matching methods. The character matching method adopts DP-matching between the input data and models as a major matching method, while unit matching method uses relation matching between consecutive units (part of character) in addition to DP-matching between units. A couple of methods combining character matching and unit matching methods were examined also. We found that we got best recognition result applying unit matching methods to the recognition candidates from character matching method.

정신분열병에 대한 리스페리돈의 효과 및 안정성

이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.

다운 증후군과 동반된 그레이브스병 1예

노혜정,신진호,김하영,김용성,백승훈,박병현,조정구 圓光大學校 醫科學硏究所 2005 圓光醫科學 Vol.20 No.1

2항근사 볼츠만 방정식을 이용한 Ne의 전자수송계수 연구

전병훈(Byoung-Hoon Jeon),하성철(Sung-Chul Ha),송병두(Byoung-Doo Song) 대한전기학회 2003 대한전기학회 학술대회 논문집 Vol.2003 No.10

Acidity in Precipitation and Solar North-South Asymmetry

Ga-Hee Moon,Kyoung-Yoon Ha,Seong-Hoon Kang,Byoung-Ho Lee,Ki-Beom Kim,Jung-Hee Kim,Heon-Young Chang 한국우주과학회 2014 Journal of Astronomy and Space Sciences Vol.31 No.4

We are motivated by both the accumulating evidence for the connection of solar variability to the chemistry of nitrogen oxide in the atmosphere and recent finding that the Galactic cosmic-ray (GCR) influx is associated with the solar northsouth asymmetry. We have analyzed the measured pH in precipitation over the 109 stations distributed in the United States. We have found that data of pH in precipitation as a whole appear to be marginally anti-correlated with the solar asymmetry. That is, rain seems to become less acidic when the southern hemisphere of the Sun is more active. The acidity of rain is also found to be correlated with the atmospheric temperature, while not to be correlated with solar activity itself. We have carried on the analysis with two subsamples in which stations located in the east and in the west. We find that the pH data derived from the eastern stations which are possibly polluted by sulfur oxides and nitrogen oxides are not correlated with the solar asymmetry, but with the temperature. On the contrary, the pH data obtained from the western stations are found to be marginally anti-correlated with the solar asymmetry. In addition, the pH data obtained from the western stations are found to be correlated with the solar UV radiation. We conclude by briefly pointing out that a role of the solar asymmetry in the process of acidification of rain is to be further examined particularly when the level of pollution by sulfur oxides and nitrogen oxides is low.

Antepartum Diagnosis and Treatment of Diffuse Alveolar Hemorrhage in a Pregnant Woman with Systemic Lupus Erythematosus

( Ha Shin Kim ),( Hae Sun Jeon ),( Soo Jin Han ),( Ji Hoi Kim ),( Jae Hoon Chang ),( Yun Kyu Oh ),( Kichul Shin ),( Byoung Jae Kim ),( Seung Mi Lee ) 대한주산의학회 2019 Perinatology Vol.30 No.1

Diffuse alveolar hemorrhage (DAH) is a rare and life-threatening complication of systemic lupus erythematosus. Differential diagnosis and successful management of DAH can be problematic in pregnancy. We report a case of a 35-year-old pregnant woman who was presumptively diagnosed with DAH and treated during the antepartum period, resulting in symptomatic improvement and successful delivery after immunosuppressive treatment.

근골격계 유해요인 조사 보고서 검토를 통한 조사 방법 및 제도 개선 방안

김병훈 ( Byoung Hoon Kim ),박지영 ( Ji Young Park ),백경희 ( Kyunghee Baek ),하권철 ( Kwonchul Ha ) 한국산업보건학회 2021 한국산업보건학회지 Vol.31 No.3

Objective: The objective of this study was to suggest improvement methods for investigations and systems through a review of musculoskeletal risk factor investigation reports conducted in the workplace. Methods: A total of 34 reports on musculoskeletal risk factor investigations were reviewed. To confirm the appropriateness of the evaluation, reevaluation was conducted through a field investigation using other evaluation tools. In order to understand the effectiveness of the improvement plan, a survey was conducted with those in charge of tasks with ergonomic burdens. Results: As a result of performing a field survey using the work sampling method recommended by the KOSHA (Korea Occupational Safety and Health Agency) for ten tasks, eight tasks were determined to pose an ergonomic burden. When 30 tasks were evaluated with RULA (rapid entire body assessment), 90% of them were evaluated at a higher level than the results of the workplace survey. Among the improvement measures, only 36% of the field workers affirmed them, and in only 19% of the workplaces were actual improvements made. Conclusions: In order to improve the ergonomic investigation system for risk factors in the ergonomic burden task, it is necessary to secure the objectivity of the evaluation performed by the institution and enable the active participation of workers in improvement activities.

지난 2년간의 학회지 "신경정신의학" 심사 평가보고

오병훈,권준수,남궁기,김승현,지익성,김창윤,하규섭,박원명,김성곤,오강섭,김정범,이수정,정한용,이창욱,박용천,이영문,김세주 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.3