半導體의 作用

金夏永 忠州大學校 1968 한국교통대학교 논문집 Vol.2 No.-

In the introduction, I explained some industrial problems occurred by the nature of electrical conduction and the optical nature. In the main subject, I explained forming and attribute of fermilevel of energy band made by a semi-conductor and the theory of electric conduction happened by Acceptor level of impure semi-conductor and the asymmetric electric conduction. I also wrote down that the optical effect occurred by L. Apekes, E. O. Kane, G. W. Gobeli as a part of optical operation will be constantly useful to our daily life.

핍지신경교종 37예에 대한 임상적 연구

김하영,정희원,조병규,한대희,지제근,최길수,심보성 대한신경외과학회 1986 Journal of Korean neurosurgical society Vol.15 No.4

The authors reviewed 37 consecutive cases of histologically proven oligodendroglioma who were treated at the Seoul National University Hospital, between 1979 and 1986. There was a 1.5:1 male to female ratio. The age of patients at the time of diagnosis varied between 6 and 64 years(mean 38 years), with 51% in the fourth and fifth decades. The incidence of oligodendrogliomas represented 5% of all brain tumors and 15.5% of all gliomas. All but one were located supratentorially and 54% of them involved the frontal lobe. The mean duration of symptoms prior to the surgery was 27.2 months, but seizures had a considerably longer duration of 6.4 years. The common symptoms were headache(62%), seizures( 38%), and motor weakness( 22%). The common neurological findings were papilledema(51%), motor deficit(24%), and change in cognition(19%). Six out of 37 cases(16%) presented as the spontaneous intracranial hemorrhage. Calcifications were detected on plain X-ray films of the skull in 19% of patients and fine vascular stains were found on carotid angiograms in 30% of the cases. Brain CT revealed calcification(57%), cyst formation(43%),low density(35%) and heterogenous contrast enhancement (35%). The important factors affecting the prognosis and the recurrence rate were (1) the extent of surgical excision, (2) postoperative radiation therapy, and (3) the pathologic grading. There was a significant difference in the recurrence rate between patients treated with postoperative irradiation and patients treated with surgery alone.

부고환의 투명 세포 유두상 낭선종 1례

김하영,이상욱,정해원,양대열,조성진,김성용 대한남성과학회 2007 The World Journal of Men's Health Vol.25 No.3

등재학술지 내 음악치료 연구 게재 동향

김하영 한국음악치료교육학회 2018 인간행동과 음악연구 Vol.15 No.2

본 연구에서는 국내 음악치료 연구의 동향을 알아보기 위해 등재(후보)학술지에 게재된 음악치료 연구를 분석하여 연구 동향, 연구 대상, 연구 유형, 연구 분야별 연구 게재의 추이, 구성 요소에 대한 차이 등을 확인하였다. 분석된 논문은 2003년부터 2017년 10월까지 등재(후보)학술지에 게재된 음악치료 논문 472편이다. 분석 결과 등재(후보)학술지에 게재되는 음악치료 연구가 2003년을 기점으로 게재수가 증가하고 있고 게재되는 학술지의 분야가 다양화하고 있는 것으로 나타났다. 연구 구성에 따른 연구 분야별 비교에서도 이러한 결과가 확인되었다. 주로 기술연구와 실험연구 위주의 연구 유형은 점차 역사연구, 철학연구, 개발연구로 다양화 되었고, 연구 대상은 장애군에서 비장애군으로 그 범위가 확장되었다. 또한 융복합 학문이 강조되는 학문적 경향을 반영하여 음악치료 연구 내 대상군 특성이나 환경적 특성이 반영된 다양한 학문분야의 학술지 내 게재 비율이 증가하는 것을 알 수 있었다. 이러한 결과는 타 분야와의 협력을 통한 다양한 학술적 접근은 음악치료 연구의 융복합적 특성을 보여주며, 이에 대한 기초자료로 제시될 수 있다. The purpose of this analysis was to classify music therapy studies published in KCI journals to understand the type of research being conducted and trends in the research. This study analyzed 472 music therapy articles published in KCI journals from 2005 to October 31, 2017. The study analyzed the overall characteristics of the included studies, trends in each research field, study subjects, research types, and commonalities and differences between research fields. It was confirmed that the number of music therapy studies published in KCI journals steadily increased from 2005. The results also confirmed that the research subjects and types of music therapy research became more diverse. For example, earlier studies focused on participants with disabilities, but populations without disabilities were increasingly the focus of more recent studies. Similarly, earlier studies were mostly experimental or descriptive, but more recent research included historical, philosophical, and program development studies. The results of analysis confirm that music therapy research is evolving and being conducted in cooperation with many other fields. This article provides a snapshot of the current state of music therapy research and offers implications for the future of music therapy research with multidisciplinary characteristics.

외이도에 생긴 골종의 전산화 단층 촬영 소견

김하영,송창준,윤충대,박미현,신병석 대한영상의학회 2006 대한영상의학회지 Vol.55 No.1

골프 참가형태 및 정도와 자아효능감의 관계

김하영 한국스포츠리서치 2006 한국 스포츠 리서치 Vol.17 No.6

Canine hemangiopericytoma in a Golden Retriever: A case report

김하영,우계형,황범태,박정원,최정업 한국동물위생학회 2007 韓國家畜衛生學會誌 Vol.30 No.4

A 7yearold intact female Golden Retriever was presented for examination. The dog had large irregular subcutaneous masses in the abdomen which were ruptured or encapsulated. Those were removed surgically. Histopathologically, the masses consisted of spindle cells that often formed distinct whorls around a central capillary. Immunohistochemical anaylsis revealed that the neoplastic cells were strong diffuse cytoplasmic immunolabelling for vimentin and focal immunoreactivity for smooth muscle actin, whereas not immunoreactive for cytokeratin, desmin, von Willebrand factor, glial fibrillary acidic protein, or S100. The neoplastic cells ultrastructurally had processes attached by desmosomelike structures, swollen mitochondria and dilated rough endoplasmic reticulum. Based on the above results, this case was diagnosed as a canine hemangiopericytoma in the abdominal subcutis of a Golden Retriever.

[세상 들여다보기] 영웅시대는 없다

김하영 새가정사 2006 새가정 Vol.- No.-

건설 재해사례 보고서의 텍스트 마이닝을 통한 복합사고 패턴 분석

김하영,이준성,장예은 대한건축학회 2022 대한건축학회논문집 Vol.38 No.4

Construction accidents usually involve two or more injuries in succession considering various risk factors are present everywhere on site. This study aims to analyze the patterns of these multi-cause accidents through a text mining methodology. There were 1,300 accident reports from the Korea Occupational Safety & Health Agency (KOSHA). The collected data was refined and processed through a morpheme analyzer for semantic analysis. A Python algorithm was developed and applied to extract multi-cause accidents; 139 out of 987 accident cases were extracted. The occurrence patterns involving the 139 multi-cause accidents were based on the relationship of each accident type and the occurrence characteristics by type. The type of multi-cause accidents that occurred at the highest frequency were the narrowness or winded (Type 2) or fall (Type 1) due to the fall down or overturn (Type 5) of an object or structure. The rate of acting as a primary and secondary accident differed depending on the accident type. Falling (Type 1) and narrowness or winded (Type 2) had a very high proportion of secondary accidents, while the flying object, collision, fall down or overturn and collapse (Type 3, 4, 5 and 6, respectively) were more likely to act as primary accidents. Using the results from this study, once a specific accident is recognized, the scale of the accident can be minimized by closely examining the occurrence of similar accidents and possibly prevent future occurrences. Additionally, this study can provide direction to review data classified as a single accident from past instances. 다양한 위험 요소가 혼재된 건설 현장에서는 2가지 이상의 사고가 연쇄적으로 발생하는 경우가 많다. 본 연구는 건설 현장의 복합사고가 어떠한 패턴으로 발생하는지 분석하기 위해 한국산업안전보건공단(KOSHA)의 건설 재해사례 보고서 1,300건을 수집하였다. 이후 Python 기반의 자연어 처리 및 복합사고 추출 알고리즘을 적용하여 987건의 재해 사례 중 139건의 복합사고를 추출하였다. 이후 복합사고 행렬을 활용하여 두 가지 관점에서 복합사고의 발생 패턴을 분석하였다: 1) 선후행 관계에 따른 사고유형별 연관성 및 2) 사고유형에 따른 발생 특성. 우선, 가장 높은 빈도로 발생한 복합사고의 형태는 물체나 구조물의 넘어짐/전도(유형5)로 인한 끼임/감김(유형2) 또는 떨어짐(유형1) 재해이다. 이는 건설 현장의 구조물이 무너지거나 전도되면, 근로자가 중심을 잃고 추락하거나 끼이는 형태의 복합사고가 발생할 가능성이 높다는 점을 시사한다. 또한, 사고유형에 따라 1차 및 2차 사고로 작용하는 비율이 상이하였다. 떨어짐(유형1)과 끼임/감김(유형2)은 2차 사고로 작용하는 비중이 매우 높았던 반면, 낙하, 부딪힘, 넘어짐/전도, 무너짐(유형3, 4, 5, 6)은 1차 사고로 작용하는 확률이 더 높은 것으로 나타났다. 본 연구의 결과를 활용하여, 만일 사고 발생으로 특정 재해를 인지한 경우 그와 연관성 높은 재해의 발생 여부와 추후 발생 가능성을 면밀히 살펴봄으로써 재해 규모를 최소화할 수 있으며, 과거에 단일사고로 분류되었던 자료의 재검토가 필요한 경우 방향성을 제시할 수 있다.

[세상 들여다보기] 더 높이 뛰기 위해서는

김하영 새가정사 2008 새가정 Vol.- No.-