ARINC-661 개발 도구의 DO-330 도구 자격 획득을 위한 시험 자동화 에이전트 구현

김도균(Do Gyun Kim),김영곤(Younggon Kim) ICT플랫폼학회 2020 JOURNAL OF PLATFORM TECHNOLOGY Vol.8 No.4

Rugby Football의 競技力向上을 爲한 競技內容의 分析 : 第1회 大統領旗 全國種別 Rugby Football 選手權大會를 中心으로 With emphasis on a classification Rugby football championship tournament of the first President flag

孫斗玉,安德均,金昇一 慶熙大學校 體育科學大學 1990 體育科學論叢 Vol.- No.3

The goal of this study is to examine the content of Rugby-football games for improvement of Rugby-football game-skill. So I had examined 14 high school teams(Male) all over the country. The results can be summarized as follow : 1. In play time during games. The mean play time was 12minutes and 0 second in 48.5 games (60minutes) during games of high school teams. 2. The analysis of attack-factors. Kick-attacks were 39.6 times(33.0%) per team during games. Line out-attacks were 21.4 times(17.0%) per team during games. Scrum-attacks were 19.5 times(16.3%) per team during games. Maul and Ruck-attacks were 15.9 times(13.2%) per team during games. Counter-attacks were 13.8 times(11.5%) per team during games. Penalty-attacks were 9.8 times(8.2%) per team during games. 3. The analysis of Scrum-Atack factors. Knock-ons were 9.1 times(46.7%) per team. Responsibilitises of stopping games were 5.4 times(27.5%) per team. Choices were 2.9 times(14.1%) per team. As mentioned above the factors was 88.7% of the whole. 4. The analysis of lineout-attack factors. Touch kicks were 16.2 times(75.9%) per team. Touches during the play were 5.1 times(24.1%) per team. 5. The analysis of treated factors in Maul and Ruok. The attacks treated as my ball were 11.3 times(71.6%) per team. The attacks treated as your ball were 4.5 times(28.4%) per team. 6. The analysis of factors for getting penalty. Off side-fouls were 3.5 times(36.6%) per team. Over the top-fouls were 1.8 times(18.7%) per team. Held-fouls were 0.6 times(9.0%) per team. Pick up-fouls were 0.6 times(6.0%) per team. Not 10m-fouls were 0.5 times(5.2%) per team. No ball charge-fouls were 0.4 times(4.5%) per team. As mentioned above the 6 factors were 80% of the whole. 7. The analysis of attack-factors by kick. The attacks by touch kick were 11.9 times(29.1%) per team. The attacks by up and under were 11.0 times(27.6%) per team. The attacks by penalty were 9.4 times(23.4%) per team. As mentioned above the factors were 80.7% of the whole. 8. The analysis of Attack-factors connected with try. The attacks connected with try in scurm were 0.9 times(44.6%) per team. The attacks connected with maul and ruck were 0.77 times(41.3%) per team. As mentioned above the 2 factors were 85.9% of the whole. 9. The analysis of getting points. Getting points by try were 2.04 times(51.8%) per team. Getting points by covert were 1.4 times(35.7%) per team. Getting points by penalty goal kick were 0.5 times(12.5%) per team. As mentioned above the try factors were 87.5% of the whole.

ARQ 기법을 적용한 블루투스 복합 피코넷에서 임펄스 잡음의 영향

김도균,노재성,조성준,김정선 한국항행학회 2002 韓國航行學會論文誌 Vol.6 No.2

본 논문에서는 임펄스 잡음, 라이시안 페이딩, 그리고 동일채널간섭이 존재하는 블루투스 복합 피코넷에서 PER 성능과 패킷 처리율의 개선에 대하여 연구하였다. 특히, 블루투스 복합 피코넷에서 동일채널간섭의 영향을 시뮬레이션 하였다. 시뮬레이션 결과로부터 복합 피코넷에 의한 동일채널간섭과 임펄스 잡음은 블루투스 복합 피코넷의 성능에 영향을 주며 SAW-ARQ 기법은 블루투스 패킷의 전송 성능을 개선하는데 효율적임을 알 수 있었다. This paper has investigated the PER performance and the packet throughput of Bluetooth multipiconet in the presence of impulsive noise. Rician fading, and co-channel interference. Specially, it is simulated the effect of co-channel interference in Bluetooth multi-piconet. From the simulation results, it is obtained that the co-channel interference due to multi-piconet and impulsive noise affects performance of Bluetooth multi-piconet. And, we have known that the SAQ-ARQ method is very efficient to improve the performance of Bluetooth packet transmission

유압전동장치의 유량 압력맥동 특성

김도태,윤인균 한국공작기계학회 2001 한국생산제조학회지 Vol.10 No.1

This study deals with a flow and pressure ripple characteristics for a hydrostatic transmission (HST) consisting of a variable axial piston pump connected in an open loop to a fixed displacement axial piston motor. These flow ripples produced by pump and motor in HST interacts with the source impedances of the pump or motor and dynamic characteristics of the connected pipeline, and results in a pressure ripples. Pressure ripples in HST is major source of vibration, which can lead to fatigue failure of components and cause noise. In this paper, the flow ripples generated by a swash plate type axial piston pump or motor in HST are measured by making use of hydraulic pipeline dynamics and the measured pressure data at two points along the pipeline. By using the self-checking functions, the validity of the method is investigated by comparison with the measured and estimated pressure ripples at the halfway section of the pipeline, and good agreement is achieved.

보건관리대행 프로그램 운영평가와 서비스향상 방안에 관한 연구

이도화,옥종석,김남균 인제대학교 인문사회과학연구소 1998 인문사회과학논총 Vol.5 No.1

The occupational health agency system, which was established for the purpose of providing efficient health services with limited resources to the employees of small and medium enterprises, is a traveling group health service system. Though the occupational health agencies have increased in numbers, which is 66 in total in 1998, after the introduction of the occupational health agency system, there have not been proper evaluations and improvements in the system. The purpose of this study is to conduct the evaluation of the occupational health agencies, and to provide suggestions for improvement thereof. Specifically, it attempts (1) to identify the factors related to the perceptions and attitudes of in-house health personnel of small and medium manufacturing firms in Shinpyung-Changrim industrial complex of Pusan regarding occupational health agency system, (2) to examine the actual conditions of occupational health agency services provided by the nurses of the agencies, (3) to identify the problems associated with the occupational health agency system on the basis of the survey results, and (4) to suggest the alternatives to improve the quality of the services. This study used questionnaire method in order to collect the data. The sample occupational health agencies evaluated in this study are 12 institutions in Pusan-Kyungnam region. The main results of the study are as follows: (1) There were weaknesses in service in the areas of approachability, comprehensiveness, technical quality, participation of workers and management, and adequacy of service. The problems in the areas other than approachability were found to be structural, while the latter ones were the problems which occurred during service implementation processes. (2) While the quality of occupational health agency service in general was rather low, there were some variations in the level of service quality according to the institutions. On the basis of the above results, the sugestions for improvement and limitations of the study are discussed in the conclusion.

커패시터 공진전압을 이용한 하프 브릿지 고주파 인버터의 특성해석에 관한 연구

김동희,김도선,김종해,노채균 嶺南大學校 工業技術硏究所 1997 工業技術硏究所論文集 Vol.25 No.2

This paper presents operating characteristics of the main conversion considering half-bridge high frequency resonant inverter using capacitor Resonant voltage to the object of research. The analysis of the proposed circuit describes generally by using normalized parameter, and basic operating principle and driving characteristics have been evaluated as to switching frequency and load parameter. Several features are considered, this paper suggests some fundamental data for designing the main power conversion circuit. To prove rightfulness for characteristics analysis of proposed inverter, it is confirmed that this paper are nearly, equal to circuit analysis by comparison theoretical and experimental waveforms results of proposal inverter using Power-MOSFET of switching devices. In the future, design technique proposed in this paper can be applied to several areas such as induction heating, power supply of DC-DC converter, UPS etc.

Insert type 총형공구 여유각 영향에 따른 베어링 Rubber Seal 금형의 가공성 평가

Li, Li-Hai,김연술,김도형,양균의,문상돈 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

Formed insert type tool satisfy both the surface roughness and geometric accuracy, so that cutting edge of formed tool can duplicate final feature. For experiment, the formed tools with various clearance angles are machined. And the tools are evaluated with respect cutting force, flank wear and surface roughness to optimistic condition.

복숭아 雙子果에 關한 연구

유영산,김도균 대구효성가톨릭대학교 1997 연구논문집 Vol.56 No.2

최근 油桃系 복숭아에서 발생하고 있는 雙子果의 類型과 재배품종, 樹齡, 결과지 종류, 기상, 생장조절제처리 등에 따른 발생정도를 조사하여 다음의 결과를 얻었다. 1. 복숭아 雙子果는 암술이 두개 착생된 雙子房花가 결실된 것으로서 受精 여부에 따라 'doubled fruit'형과 'spurred fruit'형으로 구분되었다. 2. 雙子果는 털이없는 油桃系 품종에 주로 발생되었으며 발생이 많은 품종은 'Armking', 'May Grand'and 'Chunhong'등 早生種 品種에서 였다. 3. 雙子果의 발생은 花芽分化期인 7~8월의 고온 건조시 그 이듬해에 많이 발생되었다. 4. 雙子果의 발생은 수세가 강한 유목, 세력이 강한 樹冠上部의 從長枝, 직사광선을 받기쉬운 樹冠의 동향 및 남향에서 발생이 많았다. 5. GA₃처리는 쌍자과의 발생을 억제시켰으나 꽃눈이 탈립되는 부작용을 보였으며 반면에 paclobutrazol 처리는 쌍자과의 발생을 증가시키는 경향을 보였다. 6. 雙子果의 발생은 7~8월의 지나친 高溫乾燥시 증가하므로 적절한 灌水가 발생을 줄일 수 있는 방법이라 생각되었다. This experiment was conducted to investigate the cause of occurrence and types of peculiar doubed fruits which occured recently in peach orchards. And it was also concucted to investigate the occurrence degree of doubled fruits as influenced by peach cultivar, tree age, fruiting branch, weather, and application of growth regulators. The results obtained in this experiment are summarized as follows. 1. The doubled fruits were developed from malformed flowers with two pistils. Doubling of fruits was divided into two types: 'doubled fruit' from fertilization of two pistils and 'spurred fruit' from fertilization of only one pistil. 2. The doubled fruits were seldom occured in the tomentose peach cultivars and mainly occured in the nectarine cultivars. The doubled fruits were often occured in early maturing cultivars such as 'Armking', 'May Grand'and 'Chunhong'. 3. The occurrence of doubled fruits increased in the vigorous young tree, water sprout of the upper canopy and eastern and southern part of tree canopy. 4. When the period of flower bud differentiation was high temperature and low humidity, The occurrence of doubled fruits was increased in the next year. 5. Treatment of GA₃reduced the occurrence of doubled fruits, treatment of paclobutrazol apparently increased the doubled fruits in 'May Grand' nectarine. 6. The occurence of doubled fruits was assumed to be due to a previous hot-dry season during the flower bud differentiation period, Thus, it was speculated that a frequency of doubled fruits may be reduced by irrigation.

산전 초음파로 진단된 선천성 수신증 태아의 경험 1례

강민아,김도균,최석철,양회생,배철성,윤혜원,심재철,하달봉 동국대학교 경주대학 1997 東國論集 Vol.16 No.1

Prenatal ultarsound represents an accurate and reliable method for the detection of intrauterine anomalies, especially urinary tract anomalies. Hydronephrosis is the most common congenital condition detected by prenatal ultrasound. Prenatal ultrasonographic diagnosis allows a good condition and therapeutic assessment of the patients prior to serious impairment of renal function so that in most cases the urological surgeon can opt for a parenchymal conserving procedure. The authors have experienced a case of congenital ureteropelvic obstruction with hydronephrosis diagnosed at 32 weeks of pregnancy and report our experience with a brief review of literature.

TiO₂를 이용한 아세틸렌 가스의 광촉매 산화반응

정대일,김성엽,이도훈,이용균,박유미,최순규,김동현 동아대학교 환경문제연구소 2000 硏究報告 Vol.23 No.1

Photocatalyzed degradation of acetylene gas was carried out over precoated titanium dioxide(anatase) illuminated UV light in a flow reactor. photocatalytic oxidation of acetylene gas indicated high conversion rates (78.0%) to CO₂gas. And photocatalytic oxidation of gas according to a fold, twofold, and threefold of titanium dioxide(anatase) respectively gave high conversion rates. The longer reaction time was, the higher conversion rate to CO₂ gas showed.