실시간 운영체제 Qplus-P용 그래픽 윈도우 라이브러리 구현

김도형,김선자,김성우,Kim, Do-Hyung,Kim, Sun-Ja,Kim, Seung-Woo 한국정보처리학회 2003 정보처리학회논문지 A Vol.10 No.5

디지털 TV, 인터넷 셋탑박스, 인터넷 전화기 등과 같은 정보가전 제품이 속속 등장하면서 이들 제품의 기능을 제어하는데 필수적인 실시간 운영체제 시장이 크게 성장하고 있다. 한국전자통신연구원에서는 소형의 휴대 정보 단말에서부터 디지털 셋탑박스 및 홈 서버까지 다양한 종류의 정보가전 기기에 공통으로 사용될 수 있는 확장 가능한 표준 실시간 운영체제 Qplus-P를 개발하였다. 본 논문에서는 정보가전용 실시간 운영체제 Qplus-P에 탑재되는 그래픽 윈도우 라이브러리의 구현에 대해 기술한다. Qplus-P 그래픽 윈도우 라이브러리는 공개소스인 tiny-X 그래픽 서버에 한글 처리 기능, 화면 회전 기능, 터치스크린 입력 기능, 그래픽 가속 기능 등을 추가하였다. Qplus-P 그래픽 윈도우 라이브러리는 현재 arm 프로세서를 사용하는 아이팩 3600 PDA, 삼성 S3C2400 보드, 자우루스 PDA와 x86 프로세서를 사용하는 홈서버에 탑재되었으며, Qplus-P타겟 빌더에 통합된 형태로 제공된다. As the Internet appliances like digital TV, Internet set-top boxes, and Internet phone, are showing up in the market, the economics of real-time operating system (RTOS), which is an essential for controlling those devices, is expanding faster than ever before. ETRI has developed describes RTOS called Qplus-P, targeting various platforms ranging from PDA to Internet set-top box and home server. This paper describes the implementation of graphic window library for Qplus-P. The Qplus-P graphic window library was implemented using tiny-X graphic server and gtk graphic toolkit, which are open source software. To port this library to various aliances, hangul processing, screen rotation, touch screen, and graphic acceleration functions are added to the tiny-X graphic server of the implementd graphic window library. Currently, Qplus-P graphic window is running on ARM-based appliances such as iPaq PDA, Samsung S3C2400 board, Zaurus PDA, and on Home Server that uses x86 processor. Qplus-P graphic library is provided as a of Qplus-P target builder.

광간섭단층촬영으로 분류된 미만성 당뇨황반부종의 위험인자

김도형,김상훈,김현웅,윤일한,Do Hyung Kim,M,D,Sang Hoon Kim,M,D,Hyun Woong Kim,M,D,Ill Han Yoon M,D 대한안과학회 2006 대한안과학회지 Vol.47 No.4

Purpose: Recently diffuse diabetic macular edema has been morphologically classified by optical coherence tomography. This study was conducted to examine the difference of risk factors of the classified types of diffuse macular edema. Methods: The subjects included 93 people who were diagnosed with non-insulin dependent diabetes. We diagnosed the presence of diabetic macular edema with slit lamp fundus examination and used OCT for the classification of diffuse macular edema. We examined the differences in epidemiological risk factors in non-diabetic macular edema patients after diabetic macular edema patients were examined with fluorescein angiography to confirm diffuse macular edema. Results: Diabetic macular edema was classified into 4 types using OCT. Compared with patients without macular edema, sponge-like macular edema - related epidemiological risk factors included diabetic nephropathy, cystoid macular edema was related to HbA1c, serous macular detachment was related to treatment of diabetes by insulin, and posterior hyaloid raction was related to diastolic blood hypertension. Conclusions: In the present study, differences in epidemiological risk factors were related to the occurrence of a type of diffuse macular edema.

백굴채(Chelidonium majus) 추출물의 Fischer 344/N 랫드를 이용한 90일간 반복 경구투여 독성시험

김도형,장호송,김광호,강상철,김학수,길기현,공광한,안태환,배진숙,고현규,김갑호,박찬구,이현걸,송시환,한충택,Kim, Do-Hyung,Zhang, Hu-Song,Kim, Kwang-Ho,Kang, Sang-Chul,Kim, Hak-Soo,Gil, Ki-Hyun,Kong, Kwang-Han,Ahn, Tae-Hwan,Bae, Jin-Sook,Go, Hyeon-K 대한수의학회 2009 大韓獸醫學會誌 Vol.49 No.1

This study was performed to evaluate repeated-dose oral toxicities of Chelidonium majus extract in Fischer 344/N rats. Chelidonium majus extract was administered orally to rats at dose levels of 0, 25, 74, 222, 666 and 2,000 mg/kg/day. Each group consisted of 10 rats of each gender. The Chelidonium majus extract was given once a day, 5 times a week, for 90 day repeatedly. This study was conducted in accordance with the Protocol of Korea National Toxicology Program (issued by National Institute of Toxicological Research) and The Standards of Toxicity Study for Medicinal Products (issued by Korea Food and Drug Administration). In the present study, There were no toxicologically significant changes in mortality, clinical signs, body weight gains, ophthalmoscopy, urine analysis, hematology, serum biochemistry, necropsy findings, organ weights, histopathology, estrus cycle and sperm examination of all animals treated with Chelidonium majus extract. These results suggest that the oral no observed adverse-effect level of the test item, Chelidonium majus extract, in rats is higher than 2,000 mg/kg/day in both genders. The target organs were not established.

전공의 의료커뮤니케이션 능력과 진료수행 자기효능감, 공감능력과의 상관관계

김도형,김민정,이해영,김현석,김영미,이상신,Kim, Doehyung,Kim, Min-Jeong,Lee, Haeyoung,Kim, Hyunseuk,Kim, Youngmi,Lee, Sang-Shin 한국정신신체의학회 2021 정신신체의학 Vol.29 No.1

연구목적 전공의 공통역량으로서 의료커뮤니케이션의 중요성을 환기시키기 위하여 전공의를 대상으로 의료커뮤니케이션 능력을 조사하고 의료커뮤니케이션 능력, 진료수행 자기효능감 그리고 공감능력의 관련성을 분석하고자 하였다. 방 법 일 대학병원 소속 총 106명 전공의를 대상으로 자기평가 의료커뮤니케이션 능력, 수정된 진료수행 자기효능감 척도, 한국판 의사 공감 척도를 조사하였다. 성별, 나이, 전공과목(인턴, 내과계, 외과계), 연차(인턴, 1~2년차, 3~4년차)에 따른 의료커뮤니케이션 능력의 차이를 조사하였다. 상관분석으로 의료커뮤니케이션 능력, 수정된 진료수행 자기효능감, 공감능력의 상관계수를 구하였고 구조방정식 모형을 이용하여 의료커뮤니케이션 능력에 영향을 미치는 각 변수의 효과를 검증하였다. 결 과 인턴 31명(31.6%), 내과계 레지던트 45명(45.9%), 외과계 레지던트 22명(22.4%)으로 총 98명이 참가하였다. 성별, 나이, 전공과목, 연차에 따른 자기평가 의료커뮤니케이션 능력 점수는 통계적으로 유의한 차이가 없었다. 의료커뮤니케이션 능력은 수정된 진료수행 자기효능감(r=0.782, p<0.001) 및 공감능력(r=0.210, p=0.038)과 유의한 정적 상관관계가 있었다. 공감능력은 진료수행 자기효능감에 직접적으로 유의한 영향을 미쳤으며(β=0.30, p<0.01), 진료수행 자기효능감은 의료커뮤니케이션 능력에 직접적으로 유의한 영향을 보였다(β=0.80, p<0.001). 공감능력은 진료수행 자기효능감을 매개하여(β=0.26, p<0.05) 간접적으로 의료커뮤니케이션 능력에 영향을 미치고 있었다. 결 론 전공의 의료커뮤니케이션 능력은 성공적 진료를 위해 필요한 진료수행 자기효능감과 직접적 연관성이 있었으므로 전공의 공통교육과정의 하나로서 중요한 위치를 차치한다고 할 수 있다. 그리고 현재의 의료커뮤니케이션 모델은 공감 능력과는 구별해서 이해될 필요가 있음이 시사된다. Objectives : This study evaluated the medical communication skills of trainee doctors and analyzed the relationship between medical communication skills, self-efficacy on clinical performance (SECP) and empathy. Methods : A total of 106 trainee doctors from a university hospital participated. The questionnaire comprised self-evaluated medical communication skills, modified SECP and the Korean version of the Jefferson Scale of Empathy-Health Professionals version. The mean difference in medical communication skills scores according to gender, age, division (intern, internal medicine group or surgery group) and position (intern, first-/second- and third-/fourth-year residents) were analyzed. Pearson correlation coefficients were determined between medical communication skills, modified SECP and empathy. The effects of each variable on medical communication skills were verified using the structural equation model. Results : There were no statistically significant mean differences in self-evaluated medical communication skills according to gender, age, division or position. Medical communication skills had a significant positive correlation with modified SECP (r=0.782, p<0.001) and empathy (r=0.210, p=0.038). Empathy had a direct effect on modified SECP (β=0.30, p<0.01) and modified SECP had a direct effect on medical communication skills (β=0.80, p<0.001). Empathy indirectly influenced medical communication skills, mediating modified SECP (β=0.26, p<0.05). Conclusions : Medical communication skills are an important core curriculum of residency programs, as they have a direct correlation with SECP, which is needed for successful treatment. Moreover, the medical communication needs a new understanding that is out of empathy.

옥수수 가공방법 및 두께가 in situ 건물 분해율과 in vitro 메탄 발생에 미치는 영향

김도형,이창현,우양원,김종남,조광현,장선식,김경훈,Kim, Do Hyung,Lee, Chang Hyun,Woo, Yang Won,Rajaraman, Bharanidharan,Kim, Jong Nam,Cho, Kwang Hyeon,Jang, Sun Sik,Kim, Kyoung Hoon 한국초지조사료학회 2017 한국초지조사료학회지 Vol.37 No.4

본 연구에서는 옥수수의 가공방법 및 옥수수의 두께의 차이가 반추위 in situ 소화율 및 in vitro 반추위 발효와 메탄 발생에 미치는 영향에 대하여 알아보고자 실시하였다. Micronized corn(2.5 mm thickness) 처리구는 다른 처리구들에 비하여 in situ 48시간 건물 분해율이 모든 배양시간대에서 높게(P<0.05) 나타났다. 반면, steam flaked corn(3.3 mm thickness) 처리구는 모든 배양시간대에서 가장 낮은(P<0.05) in situ 건물 분해율을 보였다. 반추위 내에서 미생물에 의해 분해되는 b fraction은 이와 상반되는 결과인 steam flaked corn(3.1 mm thickness)과 steam flaked corn(3.3 mm thickness) 처리구에서 높게(P<0.05) 나타났다. b fraction이 반추위를 통과하는 속도인 건물 분해상수 k값은 micronized corn(2.5 mm thickness) 처리구에서 가장 높게 (P<0.05) 나타났고 steam flaked corn(3.3 mm thickness) 처리구에서 가장 낮게 (P<0.05) 나타났다. 반추위내 시간당 통과속도를 0.05로 적용한 유효 건물 분해도는 건물 분해상수와 유사하게 micronized corn(2.5 mm thickness) 처리구에서 가장 높게 (P<0.05), steam flaked corn(3.3 mm thickness) 처리구에서 가장 낮게(P<0.05) 나타났다. In vitro 반추위 48시간 건물 소실율은 micronized corn(2.5 mm thickness) 처리구에서 가장 높은 경향을(P=0.088) 보인 반면 steam flaked corn 처리구들 사이에서는 두께에 따른 건물 소실율의 상관관계는 나타나지 않았다. 총 가스발생량 및 메탄 발생량에 있어서도 건물 소실율과 같은 결과인 micronized corn(2.5 mm thickness) 처리구에서 가장 높게 나타났으며(P=0.001), 총 휘발성지방산은 steam flaked corn(2.9 mm thickness)의 처리구에서 가장 높게 나타났으나(P=0.015) 나머지 처리구들에서는 유의적인 차이를 보이지 않았다. aectate: propionate의 비율 또한 steam flaked corn(2.9 mm thickness)의 처리구에서 가장 높게, micronized corn(2.5 mm thickness) 처리구에서 가장 낮게 나타났다(P=0.008). 본 연구의 결과를 종합하면 steam flaked corn 처리구들에서 in vitro 휘발성지방산 농도에 있어 in situ 반추위내 건물 분해상수와 유효 건물 분해도의 결과와 비교하여 상관관계가 나타나지 않은 결과로 유추해 보면 옥수수 가공방법에 의한 두께의 차이는 반추위 메탄 발생량에 영향을 미치지 않은 것으로 판단된다. This study was conducted with two ruminally cannulated Holstein steers to examine the effect of micronized and steam flaked corn on ruminal fermentation characteristics. The in situ dry matter degradability after 48 h incubation was the highest (P<0.05) at micronized corn (2.5 mm thickness) compared with steam flaked corn treatments. The steam flacked corn (3.3 mm thickness) was degraded lower (P<0.05) than the 2.9 and 3.1 mm thickness of steam flacked corn. Effective dry matter degradability and the rate of constant were the highest (P<0.05) at micronized corn (2.5 mm thickness) compared with steam flaked corns as well. The in vitro dry matter degradability after 48 h incubation was tended to higher (P=0.088) at micronized corn (2.5 mm thickness) than steam flaked corns, whereas there is no significantly difference between steam flaked corn treatments. Total volatile fatty acid concentration was higher at steam flaked corn (2.9 mm thickness) than micronized corn (2.5 mm thickness) and steam flaked corn (3.1 and 3.3 mm thickness). The acetate : propionate ratio was the highest (P=0.008) at steam flaked corn (2.9 mm thickness) and the lowest (P=0.008) at micronized corn (2.5 mm thickness). Total gas and methane production after 48h ruminal incubation was the highest (P=0.001) at micronized corn (2.5 mm thickness) compared with steam flaked corns. According to these results, the thickness of steam flaked corn as resulted corn processing is believed to do not affect methane production. However, further study is needed to better understand the present results to verify the correlation between corn processing method and their thickness on methane production using the same thickness corns by difference processing methods.

실시간 운영체계 Q+를 위한 C 표준 라이브러리 설계 및 구현

김도형,박승민,Kim, Do-Hyeong,Park, Seung-Min 한국정보처리학회 2001 정보처리학회논문지 A Vol.8 No.1

This paper describes the design and implementation of C standard library for real-time operating system Q+, that is being developed for the internet appliance. The C library in the real-time operating system should be defined according to the standard interface and support the concurrent execution of threads. The implemented C standard library is reentrant and follows POSIX.l standard interface. And, the C standard library functions, which are adequate to the Q+ application and commonly provided by commercial real-time operating systems, are selected among POSIX.l standard functions. The C standard library is implemented on the Q+ kernel and D-TV set-top box according to the implementation sequence, which is determined by analyzing the relation of function calls.

원자력 안전

김도형,Kim, Do-Hyeong 한국원자력산업회의 2006 원자력산업 Vol.26 No.10

염류집적 농경지 탈염을 위한 전기역학적 처리공정의 비용산출

김도형,최정희,조성웅,백기태,Kim, Do-Hyung,Choi, Jeong-Hee,Jo, Sung-Ung,Baek, Ki-Tae 한국지하수토양환경학회 2012 지하수토양환경 Vol.17 No.4

In this study, cost analysis of electrokinetic (EK) restoration process for desalination of saline agricultural land was performed for field application based on a pilot scale field application. For reasonable cost analysis, EK process was classified into three major parts: system design, installation and operation. Cost of system installation consists of materials and installation for electrode/electric wire, power supply and data monitoring, drainage system, etc. Operation cost was calculated based on electrical consumption and water charges for EK process. Total cost for EK process was 2,943,013 won for $1000m^2$ in greenhouse area. Cost for system installation was 2,553,786 won, that is, 87% of total cost, while cost for system operation was 389,229 won, that is, 13% of total cost.

Planar-Jet형 연소기 내 난류유동의 LES

김도형,양경수,신동신,Kim, Do-Hyeong,Yang, Kyung-Soo,Shin, Dong-Shin 대한기계학회 2000 大韓機械學會論文集B Vol.24 No.10

In this study, turbulent flows in a planar combustor which has a square rib-type flame holder are numerically investigated by Large Eddy Simulation(LES). Firstly, the flow fields with or without jet injection downstream of the flame-holder are examined using uniform inlet velocity. Comparison of the present LES results with experimental one shows a good agreement. Secondly, to investigate mixing of oxidizer(air) and fuel injected behind the flame holder, the scalar-transport equation is introduced and solved. From the instantaneous flow and scalar fields, complex and intense mixing phenomena between fuel and jet are observed. It is shown that the ratio of jet to blocked air velocity is an important factor to determine the flow structure. Especially, when the ratio is large enough, the fuel jet penetrates the main vortices shed from the flame holder, resulting in significant changes in the flow and scalar fields.

일제하 총독부 박물관 문서와 관리체계

김도형,Kim, Do-Hyung 한국기록학회 2001 기록학연구 Vol.0 No.3

The Museum of Chosen General Government(MCGG) was a supreme organ to take charge of business affairs of historical remains Japanese imperial rule. The MCGG was established in Kyongbok Palace in 1915. The MCGG was changed the reorganization of the Chosen General Government(CGG) setups, the MCGG was to maintain the cultural assets, to excavate the ruins and to put on display the remains. However, the Japanese colonist took advantage of the MCGG for political purposes. They didn't use the MCGG to promote the research of Korea culture. Therefore, the MCGG was an organization to belong to the Department of Education of the CGG. In this reason, the MCGG produced the amount of public document to business affairs. Now, This document left in the Museum of Korea. We have seen the document to study the cultural policies and the cultural assets of the CGG. This document includes the abundant information for the historical remains and ruins at that time. Accordingly, this document will help to survey the archaeological research and historical research. In addition, this document will help to manage the cultural assets. What then is the advantage of this document? The first is to see the cultural policies of the CGG through this document. The Japanese colonist took advantage of Korea history, which was low-grade culture, to justify rule of the colony. Therefore, they needed collect Korean assets to verity their theory. The second is to see the administration system of the MCGG. Indeed, this document includes information of organization of the MCGG, the policies and the process of the MCGG. In substance, we can see the systemic proceedings of the MCGG. The third is to provide historical materials to the historian. This document has the persons to plan the colonial culture policy of the MCGG, and events to rule the Korea culture. Moreover, the document of the MCGG would help to inquire into the truthfulness of history and to get the national identity.