Development of a Reduction Algorithm of GEO Satellite Optical Observation Data for Optical Wide Field Patrol (OWL)

Sun-youp Park,Jin Choi1,Jung Hyun Jo,Ju Young Son,Yung-Sik Park,Hong-Suh Yim,Hong-Suh Yim,Hong-Kyu Moon,Young-Ho Bae,Jang-Hyun Park 한국우주과학회 2015 Journal of Astronomy and Space Sciences Vol.32 No.3

An algorithm to automatically extract coordinate and time information from optical observation data of geostationary orbit satellites (GEO satellites) or geosynchronous orbit satellites (GOS satellites) is developed. The optical wide-field patrol system is capable of automatic observation using a pre-arranged schedule. Therefore, if this type of automatic analysis algorithm is available, daily unmanned monitoring of GEO satellites can be possible. For data acquisition for development, the COMS1 satellite was observed with 1-s exposure time and 1-m interval. The images were grouped and processed in terms of “action”, and each action was composed of six or nine successive images. First, a reference image with the best quality in one action was selected. Next, the rest of the images in the action were geometrically transformed to fit in the horizontal coordinate system (expressed in azimuthal angle and elevation) of the reference image. Then, these images were median-combined to retain only the possible non-moving GEO candidates. By reverting the coordinate transformation of the positions of these GEO satellite candidates, the final coordinates could be calculated.

動力耕耘機用 디젤 機關의 騷音特性

崔圭洪,李承奇,安義成 건국대학교 산업기술연구원 1994 건국기술연구논문지 Vol.19 No.-

국내에서 생산보급되고 있는 動力耕耘機用 8PS 디젤기관의 騷音 狀態를 파악하고자 消音器 전방 1m 위치 및 운전자 위치에서의 모터 구동시와 연소 구동시 각 회전수별 騷音을 측정 비교 분석하고 기관에서 발생하는 소음중 에너지 비율이 가장 높은 排氣音을 제어하기 위해 소음기를 부착시와 소음기 제거시 및 空洞의 體積을 변화시킨 경우의 각 回轉數別 騷音度, 燃料消費率, 出力 등을 측정 분석하여 현 소형 디젤기관의 騷音 減少方案 모색의 기초자료로 제시하고자 실시한 시험의 결과는 다음과 같다. 1) 機關의 回轉數가 증가함에 따라 騷音은 높아지는 것으로 나타났으며, 기존 機關의 경우 機械騷音은 85dB 이상으로 이의 騷音低減對策이 필요하다고 생각된다. 2) 消音器 附着時와 除去時 무부하 운전시와 전부하 운전시 騷音은 소음기 부착시가 제거시에 비해 각각 4, 13.1dB 정도 낮게 나타나 비교적 소음감쇄 효과가 높았다. 3) 空洞體積 變化에 따른 消音器別 騷音은 기존의 소음기 T-Ⅰ 보다 空洞의 체적을 증가시킨 T-Ⅱ, T-Ⅲ가 운전자 위치 및 소음기 전방 1m 위치에서 無負荷 運轉時 각각 1.9∼2.3dB 및 2∼2.8dB, 全負荷 運轉時 각각 4.9∼5dB, 7.1∼7.5dB 감소한 것으로 나타났다. 4) 각 회전수별 燃料消費率은 T-Ⅰ, T-Ⅱ, T-Ⅲ가 거의 같은 경향을 나타냈으나, 소음기를 제거한 경우는 약 17g/PS·hr 정도 낮게 나타났다. 또, 출력은 소음기를 부착한 경우가 제거한 경우에 비해 각각 0.55PS 낮게 나타났다. 5) 排氣騷音을 최대한으로 감소시키기 위하여 금후 機關出力 감소가 적고, 騷音 減少效果가 높은 形態의 消音器 開發硏究가 이루어져야 할 것으로 생각된다. This study was conducted to evaluate the noise characteristic of 8PS agricultural diesel engine through the modification, was found to provide the foundamental data that could be used to reduce the noise of the engine. To evaluate the noise characteristics on the agricultural diesel engine by the muffler, noise level, specific fuel consumption and output were measured in case of the with and without muffler and three different volume of muffler cavity. The results of the study are summarized as follows: The noise increased by the increament of revolution velocity. The mechanical noise of power tiller indicated more than 85dB at 1,800∼2,200rpm. Therefore, to minimized bearing ability of operator, it was thought that the countermeasure of noise reduction need. The noise level with the muffler was smaller than those without muffler by 4dB, 13.1dB. respectively. In case of increased the volume of muffler cavity, the noise level at the position of working seat was decreased 1.9∼2.3dB at the time of no-load condition and 4.9∼5dB at the time of full load, respectively. The specific fuel consumption of the without muffler type was 17g/PS hr lower than the with muffler type. The output of the without muffler type was 0.55PS higher than the with muffler type, respectively. To reduce of the exhaust noise, it is necessary to continue researches on the relationship between complex factors of the noise.

고체용 펄스핵자기공명 실험에 대하여

최규상,홍관수 順天大學校 師範大學 附屬 科學敎育硏究所 1995 科學과 敎育 Vol.3 No.-

Nuclear magnetic resonance(NMR) is a discipline of non-destructive radio-frequency spectroscopy ranging from physics and chemistry to biology and engineering. NMR consists of two parts; cw NMR and pulse NMR. pulse NMR is superior to cw NMR in various respects. We introduce briefly the basic theory and physical quantities of pulse NMR, and what can be known from these. The apparatus used is MSL200 for solid NMR, which is located in KOREA BASIC SCIENCE INSTITUTE SEOUL BRANCH.

일반 또래 아동과의 상호작용을 통한 정신지체아동의 언어 유형 분석

최성규,김홍도 한국특수교육문제연구소 2001 특수교육저널 : 이론과 실천 Vol.2 No.1

The purpose of this study was to analyze the language categories of children with mental retardation in the application of dynamic language programs. Three children with mental retardation were participated to analyze the language categones. The dynamic language programs were developed to apply between normal children and the subjects. Three normal children who were attending same classes with the subjects used the programs to interact with the three subjects. The investigation design without any research design was utilized for experimental research. Total ten sessions were applied. The time of each sessions was thirty minutes. The language categories based on B. F. Skinner's verbal behavior such as echoic, mand, tact, intraverbal, codic, and autoclitic were collected from thc three children with mcntal retardation when the three children interact with the three normal children responded from the normal children’s asking by thc language programs. The results were that: (a) language categories were analyzed by the programs; and (b) the most frequently language was intraverbal, and the second frequency of the language responses was autoclitic, howcver, the other four language categories were not presented. Thcrefore. this study concluded that the intraverbal is most important language cate당 ory for the children with mental retarded 본 연구의 목적은 정신지체아동과 또래아동과의 상호작용 프로그램을 적용하여 정신지체이동의 언어유형을 분석하고자 하였다. 언어유형은 B. F. Skinner의 Verbal Behavior 역동적 이론에 기초한 복제, 명령, 지칭, 상호, 기호, 자발언어 등이다. 프로그램 적용 방법은 역동적 방법을 이용하여 접근하였다. 연구대상은 초등학교 특수학급에 재학중인 정신지체아동 3 명이었다. 정신지체아동의 또래 아동과의 상호적용에서 나타난 언어유형은 상호언어와 자발언어였다. 상호언어와 자빌언어의 증감은 상호 영향을 미치고 있었다. 따라서 상호작용을 통한 언어지도 방안이 정신지체아동의 언어지도의 기초가 될 수 있음을 본 연구결과는 시사하고 있다.

動力耕耘機 利用實態에 關한 硏究

崔圭洪 건국대학교 1979 學術誌 Vol.23 No.2

This study has been conducted to evaluate the present of power tiller utilization which is the main equipment among agricultural machinery supplied under the government's farm machanization program. 200 farmers are selected in Kimpo, Kanghwa country, to record their power tiller utilization during a full year from Feburuary 1st of 1978 to January 31st of 1979. The result has been analized and summarized as follows : 1.The average use of power tiller in a year was 79.41 days and net operation was 470.24 hours. 2.The peak of power tiller use came in October as 13.45 days, and net operation time was 103 hours which is 21.9 percent of annual use. 3.Above 7 hours of utilization were recorded during the monthes of June, October and November. 4.By the different operations, the peak utilizations were recorded in October for transportation and threshing, in May for tillage and in June for pumping. 5.The distribution of power tiller utilization for different operations was composed of 38.5%, 32.53%, 22.35%, 6.29% and 0.32% for transportation, tillage, threshing, pumping and deases controll respectively, 6.Oil consumption was calculated as 1.64 litters per hour for fuel and 0.085 titters per hour for lubricant. 7.Repair frequncy was 17.84 times, and an average annual repair cost was 20,499 won per unit.

간접 적응 극배치에 의한 이산 비최소 위상 공정 제어에 관한 연구

崔洪圭,李泰奉 弘益大學校 1990 弘大論叢 Vol.22 No.2

In general, most of real discrete time processes have nonminimum phase characteristic. In this case, to get desired control perfermance of plant, it must be avoided of canceling unstable zeros. In this paper, an indirect adaptive pole placement controller is proposed to control a nonminimum phase plant. To estimate plant parameters, the parametized decrete adaptive observer is used and exponentially weighted least-square adaptive law is applied to it. The effectiveness of proposed controller has been demonstrated by computer simulation carried out for a second order plant.

各種 刈取機의 性能 比較 試驗 硏究

崔圭洪,李哲周 건국대학교 1968 學術誌 Vol.9 No.1

① The aim of this study is on the supply of harvester which has selected as the most suitable one to farm condition after reformation and also on the comparative experiments of efficiency of man power and engine power harvester. ② The results of this study shows that the man power harvester ha94 times of sickle and that of engine power harvester has 7 times, and it also shows the man power harvester is not suitable for wheat cutting. ③ The man power pulling harvester is the most effective one for rice harvesting farm condition for substituting with sickle. ④ It is the urgent problem in the future that a study of harvester with binder which also might be used for wheat harvesting and the study of the new harvester as a attachment of power tiller.

이유백서에서 교근절제후 하악과두의 면역조직화학적 연구

최남기,양규호,최홍란 大韓小兒齒科學會 1996 大韓小兒齒科學會誌 Vol.23 No.2

The purpose of this study was to determine whether there was any correlation between temporomandibular joint dysfunction and structure of the mandibular condyle. Weanling rats had their masseter muscles resected and immunohstochemical findings were observed with a light microscope. The results obtained were as follows: 1.The condylar cartilage region was divided into articular,proliferating,cartilage cell and hypertrophic cell layers according to cell morphology. 2.In light microscopic views,the proliferating and cartilage cell layers of the experimental group decreased gradually and at the 8th week significantly. 3.In immunohistochemical staining for type Ⅰand Ⅱ collagen,a reaction was detected in the lower part of proliferating cell and cartilage cell layers.In the cartilage cell layers,a stronger cellular reaction was present.Immunohistochemical staining for type Ⅱ collagen reacted more strongly than that Ⅰ collagen. 4.In immunohistochemical staining for proteoglycan,the staining of the experimental group resembled the control group and gradually showed a weak reaction.The proliferating and cartilage cell layers reacted more strongly then hypertrophic cell layer. 5.In immunohistochemical staining for proliferating cell nuclear antigen(PCNA),the strong reaction was detected in the nucleus of the proliferating cell layer both in control and experimental groups.But the thickness of the proliferating layer decreased in experimental group,consequently the reaction of the experimental group was reduced more than that of the control group.

고등학교 지리교육과정운영의 특징과 개선방향 : 강원도지역의 제7차 교육과정시행을 중심으로 Focused on the Enforcing of the 7th Curriculum in Gangweon-do Area

최홍규 한국지리환경교육학회 2003 한국지리환경교육학회지 Vol.11 No.2

7차 교육과정에서 지리교과는 국민공통교과인 사회, 일반선택교과인 인간사회와 환경, 심화선택교과인 한국지리, 경제지리, 세계지리로 구성된다. 현행 통합사회과는 지리영역과 일반사회영역이 하나가 된 영역별 통합교과로서 함께 교수를 하면 비전공영역이 있게 되고, 분과별과 교수하면 교육과정 시행상에 위배가 되는 결과를 낳는다. 지리교사들은 통합사회과 운영이 성공적이지 못하다고 생각해서 철저히 분과적 운영을 원하고 있다. 또한 7차 교육과정의 통합사회과에 대비한 교사들의 준비가 미흡해서 학습자들에게 교육적인 피해를 줄 수 있는 구조적인 문제를 가지고 있다. 그렇기 때문에 지리교사들은 통합사회과 운영을 위해 주로 방학중 연수를 통해서 준비를 많이 하고 있으며 교육과정을 시행하기 전에 미리 체계적인 교사 연수를 하거나 교원양성대학의 교육체계가 개선되어 준비가 되기를 강력히 원하고 있다. 아울러 교육과정을 개정할 때는 학교 교육환경과 지리교사들의 의견을 충분히 참작하여서 현실감있고 실현 가능성 있는 교육과정이 준비되도록 노력해야만 하겠다. 지리교육을 통해서 학습자들에게 내면화될 가치관과 일상생활에서 적응하여 표출될 삶의 태도가 잘 형성되도록 학습자료와 교수학습 방법을 개선해 가야만 하겠다. In the 7th Curriculum, Geography consists of Social Studies(a national common subject), Human Society and Circumstances(a general selective subject), Korean Geography, Economic Geography, and World Geography(special selective subjects). Among these subjects, integrated Social Studies, which is composed of two categories, Geography and General Society, has two major problems; one is that there is a danger that non-majoring teachers may teach students when teaching as an integrated subject, and the other, that there may come a result that teachers go against the spirit and the rule of the 7th Curriculum when teaching as a divided subject. The most Geography teachers, thinking that it is unsuccessful to teach the subject as an integrated one, want positively Social Studies of the 1st graders to be instructed as a divided subject. And they insist that the integrated subject has structural faults and that they should have been prepared for the subject before the curriculum started. Curricular revision should take place, based on reality and realizability, with education circumstances of schools and opinions of Geography teachers fully considered in advance. Geography teachers should improve their teaching materials and teaching-learning methods in order for learners to form well the view-points inwardly and the attitudes for life outwardly through Geography education.

UID설계의 지원수단과 방법에 관한 연구

崔明植,閔珪泓 경희대학교 부설 디자인연구원 1998 예술· 디자인학연구 Vol.1 No.1

If there is only a whole simple equipment like a light built in a simple function around us, neither happening will occur to us nor UID theory will be useful. But recently equipment supplied to home or office have complicated and various functions, besides become miniaturization. In one word, additional functions in comparison with the limited factor of design is becoming various. While varied functions give high added value, they cause new problem not only in the stage of design but also in users, and rather raise the problem for use. This kind of tendency is a new problem causing from the functions of recent electric appliances and is a example of raising problem rather than convenience on functions. Most of users might have experience the decline of operation causing by too many additional functions. This study considers what kind of factor we need for the design of the interface with rough contents of the method on the interface design, and examines what field of knowledge we need for the design of UID.