위배출구 폐색을 동반한 위암환자의 치료

김형호,Kim, Hyung-Ho 대한위암학회 2009 대한위암학회지 Vol.9 No.1

악성 위배출구 폐색을 동반한 위암의 경우 주위 장기 침습이 종종 관찰되며 수술적 절제가 불가능한 경우가 많다. 이런 경우 일차적으로 외과적 우회술을 시행하여 폐색을 해결하고 경구 섭취가 가능하게 하는 고식적인 치료를 시행해왔다. 최근 여러 스텐트의 개발은 절제 불가능한 위배출구 환자의 치료에 효과적으로 사용되고 있으나 이런 환자들의 고식적인 치료 방법의 결정에는 아직 논란의 여지가 있다. 스텐트 시술은 비교적 간단하고, 빠른 음식물 섭취 회복, 짧은 재원 기간, 합병증이 적다는 장점이 있다. 반면 외과적 우회술과 비교해 음식물과 암종의 과도한 성장에 의한 재폐색이 잦아 재수술이 필요한 경우가 많아 기대 생존 기간이 짧은 경우 유용하며, 수술적 우회술은 장기적인 결과가 좋아 기대 수명이 긴 경우 유용하다. 또한 아직까지 술 전 정확한 절제 가능성을 판단할 수 없기 때문에 수술적 치료는 근치적 절제의 기회가 주어지는 장점이 있다. 그러나 이전 보고들의 대상이 대부분 췌십이지장 암이며, 또한 전향적 무작위 대조군 연구가 거의 없어 위배출구 폐색을 동반한 위암 환자에서 치료방법의 결정을 위해서는 향후 위암 환자만을 대상으로 한 개복, 복강경, 그리고 스텐트 시술을 비교한 대규모 무작위 대조군연구가 필요하겠다. Gastric cancer with gastric outlet obstruction has a high incidence of direct invasion into neighboring organs, with a low resection rate and a poor prognosis. Traditionally, open gastrojejunostomy has been the standard palliative treatment in these patients. Recently, endoscopic self-expanding metal stents have been used increasingly for the palliative treatment of malignant gastric outlet obstruction, but the choice of modality to treat the obstruction caused by gastric cancer is still controversial. Many studies have shown that endoscopic stenting is less invasive and offers not only a shorter time to oral intake and length of hospital stay, but also less frequent complications compared to open gastrojejunostomy. However, recurrent obstruction by tumor overgrowth and ingrowth occur more frequently and re-intervention for recurrent obstructive symptoms are more frequently performed after stent placement than after gastrojejunostomy. Thus, stent placement may be associated with more favorable results in patients with a relatively short life expectancy, while gastrojejunostomy is preferable in patients with a more prolonged prognosis. Also, open surgery affords a greater chance for curative surgery. However, most underlying diseases analyzed in previous studies were pancreaticobiliary malignancies, and there have been few prospective studies specific for patients with gastric cancer. Additional randomized controlled trials with larger sample sizes are expected to decide the treatment modality for unresectable gastric cancer with gastric outlet obstruction.

프로세스 대수를 이용한 병행 프로그램 설계 및 검증

김형호(Kim Hyung Ho),김영곤(Kim Young Gon),배두환(Bae Doo Hwan),원성기(Won Sung Kee),송태섭(Song Tae Seop) 한국정보과학회 1997 한국정보과학회 학술발표논문집 Vol.24 No.2Ⅰ

시스템의 성능 향상과 응답 시간 개선 등을 위해서 병행 프로그램 설계의 요구가 증대되고 있다. 이러한 병행 프로그램은 교착 상태의 회피, 공유 자원의 일관성 유지와 같은 고유의 문제를 해결하여야 하기 때문에 순차적 프로그램의 구현보다 많은 노력이 요구되는 것이 현실이다. 이러한 문제들을 해결하기 위해서 많은 정형적 개발 기법들의 병행 프로그램 설계 및 검증 단계에서의 적용이 연구되었다. 그 중 프로세스 대수는 프로그래밍 언어와의 유사성으로 인하여 그 사용이 증대되고 있다. 본 연구에서는 UNIX 운영 체제하에서 병행 프로그램 개발의 표준 환경인 POSIX 표준에 프로세스 대수를 통한 설계와 검증 기법을 적용한다. 이러한 적용은 정형적 분석 결과에 기반한 병행 프로그램의 개발을 가능하게 함으로서, 앞서 언급된 병행 프로그램의 문제를 완화 시킬 수 있다.

신경증상이 동반된 척추 전이암에 대한 후방 고정술 및 광범위 소파술

김형호(Hyung-Ho Kim),왕진만(Jin-Man Wang),노권재(Kwon-Jae Roh),윤여헌(Yoe-Hun Yoon),오종건(Jong-Keon Oh),김동준(Dong-Jun Kim) 대한정형외과학회 2000 대한정형외과학회지 Vol.35 No.1

기능 안전의 효율적 향상을 위한 소프트웨어 FMEA 사례 연구

김형호(Hyung Ho Kim),이남희(Namhee Lee) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11

As the standardization of ISO26262 recently finished, there has been increase interest in the functional safety of automotive E/E system. In particular, from the perspective of E/E system supplier, they are facing severe challenges of various requirements in ISO26262 that must be achieved efficiently. Software safety analysis is included in the requirements of ISO26262. However, most of domestic E/E suppliers have difficulties in software safety analysis because of their limited software development experience and capability. In this paper, we describe the result of industrial case study on software FMEA. In particular, the main points of this paper as follows: firstly, we illustrate the approaches in the identifying software component for software FMEA. Secondly, we explain how to identify failure modes in software components and their potential causes. Third, and finally, we describe the design approach of software safety mechanism decision based on the result of software FMEA.

안전성 품질 확보를 위한 임베디드 소프트웨어 설계 기법

김형호(Hyung-Ho Kim),이남희(Nam-Hee Lee) 한국정보과학회 2014 정보과학회지 Vol.32 No.4

인공지능 제어기를 위한 인공지능 해석기법 연구

김형호(Hyung Ho Kim) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6

산림기능평가를 위한 GIS 응용모델의 개발

김형호 ( Hyung Ho Kim ),정세경 ( Se Kyung Chong ),정주상 ( Joo Sang Chung ) 한국지리정보학회 2006 한국지리정보학회지 Vol.9 No.4

This paper aims to develop a GIS(Geographic Information System) application model as a decision-making support system in order to evaluate the potential of forests according to their functions, or to classify forest functions. The forest functions analyzed in this study are as follows: production of timber, stable supply of water resources, forest hazards prevention, recreation in forests, conservation of living conditions and natural environment. Using a model possible to evaluate the potential of each forest function and to assort forest functions by making priority-based decisions according to the functions, as well as allowing for various possible analysis environments, its application has been reviewed. Factors for assessing the forest functions could be built by using the following three categories: four maps―topographical map, vegetation map, forest site map and basic forest land use map―whose quantitative drawings had already been made; other self-established maps, such as one indicating the location of sawmills, location map of expressway interchanges, and spatial data of national population distribution map; and attribute data of population and precipitation. The GIS application developed here contributes to the evaluation of forest functions in all the subject areas by map units and national forest management districts based upon the assessment system.

복강경을 이용한 위절제술

김형호(Hyung Ho Kim),조세헌(Se Heon Cho),김상순(Sang Soon Kim) 대한외과학회 1999 Annals of Surgical Treatment and Research Vol.56 No.5

위 이형성증에 관한 형태계측학적 분석

김형호(Hyung Ho Kim),김상순(Sang Soon Kim),이선경(Syun Kyong Lee) 대한소화기학회 1993 대한소화기학회지 Vol.25 No.4

N/A Recently, with the aim of reducing subjective diagnostic errors, automated image analysis techniques have been applied to the evaluation of precancerous lesions in various organs. This study was made to quantitatively define the dysplastic changes of the gastric mucosa. The spccimens were 26 cases of gaetric dysplasia and 11 cases of gastric adenocarcinoma, which were diagnoced in the Pusan National University Hospital during the period from 1988 to 1990. The analysis of the cellular and structural parameters obtained from the histological sections was performed. The mean nuclear area and the mean N/C ratio were stradily increased from mild dysplasia to severe dysylasia and to adenocarcinoma in stomach, but the mean cellular area was not significantly changed among the four categories. The structural parameters showed no significant differences between mild and moderate dysplasia, and between severe dysplasia and adenocarcinoma, while those showed significant differences between mild or moderate dysplasia and severe dysplasia or adenocarcinoma. Authors concluded that the structural parameters are helpful to discriminate high-grade dysplasia from low-grade dysplasia. In addition, the discriminating function of the structural parameters are more effective than that of cellular ones in gastric dysplasia.

거시경제변수와 부동산 경매시장의 영향관계에 관한 실증연구

김형호(Kim, Hyung-Ho),최민섭(Choi, Min-Seub) 한국주거환경학회 2015 주거환경(한국주거환경학회논문집) Vol.13 No.1

The purpose of this study is to explore influence relationships between macroeconomic factors and real estate auction markets. This study attempted to investigate and analysis influence relationships of industrial product index, composite leading index, exchange rate, consumer price index, house security loan rate and auction bidding rate for an extend study method of real estate market analysis. And in order to analyze them, conducted unit root test, granger causality test, impulse response analysis and variance decomposition analysis. The results of the study are as follows. First, it was confirmed that long-term balanced relationship exists between macroeconomic factors and real estate auction markets. Second, it was confirmed that causality exists between macroeconomic factors and real estate auction markets. Last, it was confirmed that influence relationships exists between macroeconomic factors and real estate auction markets. The significance of this study is the meaningful attempt about analyzing real estate auction region markets.