Linear Combination Analysis Using GPS Data

Park, Woon-Yong,Lee, Dong-Rak,Back, Ki-Suk,Hong, Jung-Soo 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.28 No.2

We can process and compute the position, velocity and time by satellite signals of GPS. The signals are used to compute positioning of three dimensions and timing offset of the receiver clock when we can track the tour satellite signals at least. One of the specified aims is to use less expensive single frequency code/carrier phase GPS receivers, which are typically around half the price of dual frequency receivers. In the study, the author analyzed the accuracy and applicability of frequence linear combination using triangulation points evaluated distance limitation.

연령증가에 따른 혈압요소들의 좌심실비대 및 관동맥질환과의 관련성

박재석,박창규,박미영,박재형,김용현,나진오,신성희,서순용,홍순준,박성미,임홍의,김응주,서홍석,오동주,노영무 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.2

방사선사진의 인덱스-순서 분석을 통한 치아경조직의 탈염화 검출

박동현,박영호,김경숙,박정훈,이기자,최삼진,최용석,황의환,박헌국 대한구강악안면방사선학회 2009 Imaging Science in Dentistry Vol.39 No.2

Purpose : The purpose of this study was to develop the radiographic technique for detecting the demineralization which is known as indication of dental caries. Materials and Methods : This technique was based on the comparing of multiple radiographs which was irradiated by multiple X-ray spectra. For the meaningful comparing, the multiple radiographs were reconstructed to the dosimetrically consistent images using a standard material. The difference of resulting images of same target with multiple spectra represents the difference of response of material as regards the spectra. Results : We have found about 10% of demineralization of dental hard tissues particularly in the proximal region through the analyzing of differences. Conclusion : Most intriguing thing in this investigation was that the method to analyze difference shows us to an anatomic structure of dental hard tissues even if absolute values of optical density were excluded during the procedures.

Accuracy on the Edge Detection of Topography for Digital Map Manufacture

Park, Woon-Yong,Song, Youn-Kyung,Bae, Kyung-Ho,Kim, Yong-Suk 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.28 No.2

Currently, digital maps in the metropolitan area are supposed to be revised and renewed every two years, but it is difficulty for the renewal of current information to keep pace with the quickly changing society and so, one of the alternative methods being discussed is a digital map produced using high resolution satellites. The biggest problem in the production of digital maps using high resolution satellite images is the difficulty of production in vector resource format through edge detection of satellite images, a Raster data. In this study, topographical boundaries were detected through edge detection of the satellite image, and after vectorliezing using the screen digitizing method, the results were evaluated and compared to the digital map from the NGII(National Geographic Information Institute) for accuracy.

경주지역 여고생의 초경과 체성장간의 관계

김준섭,권오구,박진석,오종수,박정현,박제식,안세한,이용환,서정호,신태섭,최영배,김덕수,이관,박수경 東國大學校醫學硏究所 2002 東國醫學 Vol.9 No.1

본 연구는 경주지역 1개 고등학교 3학년 여고생을 대상으로 초경 시작 전인 초등학교 4학년부터 고등학교 2학년까지의 키, 몸무게, 가슴둘레 수치와 초경 연령을 파악하여 여성의 초경이 빠를수록 체성장 속도의 변화가 있을 것이라는 가설을 기초로 두 요인간의 관련성을 파악하고자 시행되었다. 경주시 1개 여자고등학교 3학년생 총 317명에 대해 ㅊ경 나이, 초경시 심리 상태, 초경이 시작되었을 때의 상담 여부와 상담하였던 사람, 부모 신장과 초경전후의 식사 규칙성, 다이어트 경험, 수면시간, 스트레스, 음주/흡연 여부, 질병력 등에 대한 설문 조사를 시행하였고, 초등학교 4학년부터 고등학교 2학년까지의 키, 몸무게, 가슴둘레에 대한 정보는 건강기록부에서 확보하였다. 상기 대상자 중 건강기록부가 분실된 39명, 초경나이에 대해 응답하지 않았던 29명 및 결석 등으로 조사를 하지 못하였던 42명을 제외한 조사 대상자는 206명으로 선정하였다. 대상자들의 초경연령 평균값(Mean±SD)은 13.0±1.11이었고, 초등학교 4학년부터 고등학교 2학년까지의 초경 이후 신장 성장률은 감소하였으며, 초경연령이 빠른 군이 초등학교 때는 신장에 있어서 우위를 차지하나 고등학교에 오면서 신장은 비슷한 수준이 되었다. 초경후 1-2년 사이에 체중과 흉위의 증가율은 감소하였고, 초경연령이 빠른 군이 초등학교와 고등학교 사이에 체중과 흉위에서 모두 우위를 차지하였다. 본 연구의 결과는, 흔히 이차 성징의 시작 시점 혹은 사춘기의 시작 시점으로 보고있는 초경 연령이 청소년기의 성장과 밀접한 관련성이 있고, 특히 체중과 흉위의 성장 속도와 밀접한 관련성이 있음을 시사한다. To understand the onset of menarche in relation to changes in physical growth that take place during female adolescence, especially the changes in height and weight velocity. The 207 senior in one women high school of Kyongju were investigated in April 3 to 8, 2001. We collected the information, relation in the age at menarche, height & weight of parents, regularity of eating, and obesity diet, duration of sleeping, sickness & stress near age at menarche, by self-recording. The status of height, weight & chest circumference between the 4th grade of primary school and the junior of high school was collected by individual Health Record. The results were followed; The average age at menarche was 12.95±1.11 years old and the most frequent age of menarche is 13 years. After menarche, the velocity of height, weight and chest circumference were decreased. The most rapid group of menarche hold dominant position in height during elementary school. As time passed, they dont hold dominant position in height. The most rapid group of menarche get an advantage in the weight and the girth of chest after elementary school. The height of subjects is directly proportional to the height of their parents. These results suggest that the starting age at menestuation can be closely associated with physical growth and development.

Benzanilide類의 光化學

朴龍泰,黃正儀,鄭倧在,呂壽東,洪錫 慶北大學校 文理科大學 1979 文理學叢 Vol.6 No.-

Several model compouds for photocyclization of alkaloids were synthesized. When benzanilide was irradiated with UV lamp in quartz photocell, surprisingly 2-aminobenzophenlone and 4-aminobenzohpenone were produced as a Photo Fires reaction, However, when the benzanilide was irradiated in Pyrex photocell, the expected photoclic-compound, phenanthridone was appeared. Orthosubsitituted benzanilides in Pyrex photocell also gave 8-subsituted-9-oxy-phenanthridines. Thus, the dihydrophenanthridone was assumes as intermediate of the photocyclization of benzanilides as model for alkaloid photocyclization reaction.

기(氣)수련이 노인과 청년의 호중구 기능에 미치는 영향

박미숙,이명수,문성록,김용규 圓光大學校 附設 體力科學硏究所 2003 體力科學硏究 Vol.26 No.1

The main objective of this study is to examine the effect of Qi-training on the immune system, especially neutrophil bactericidal function. Nine healthy young male subjects and 9 elderly were studied for the effects of one bout of Qi-training on superoxide (O_(2)) production and adhesion capacity of neutrophils at times immediately after (Post Ⅰ) and 2hours after the Qi-training (Post Ⅱ). The Qi-training enhanced the O_(2) production, reaction velocity and neutrophil adhesion capacity and there were significant differences at Post Ⅰ compared to before Qi-training (Pre) in both group. Therefore, Qi-training increase the resistance of trained individuals against common infection and inflammation.

Benzanilide類의 光化學

朴龍泰,黃正儀,鄭倧在,呂壽東,洪錫 慶北大學校 物理化學硏究所 1981 硏究論文集 Vol.1-2 No.-

Several model compounds for photocyclization of alkaloids were synthesized. When benzanilide was irradiated with UV lamp in quartz photocell, surprisingly 2-aminobenzophenlone and 4-aminobenzophenone were produced as a Photo-Fries reaction. However, when the benzanilide was irradiated in Pyrex photocell, the expected photocyclic compound, phenanthridone was appeared. Orthosubstituted benzanilildes in Pyrex photocell also gave 8-substituted-9-oxyphenanthridines. Thus, the dihydrophenanthridone was assumed as intermediate of the photocyclization of benzanilides as model for alkaloid photocyclization reaction.

합작기업의 지식습득에 영향을 미치는 요인에 관한 연구 : 한국에 진출한 국제합작투자기업을 중심으로

박영렬,박용석,김민정 한국국제경영학회 2002 國際經營硏究 Vol.13 No.2

본 연구는 한국기업과 외국기업이 투자하여 설립된 국내 국제합작기업에서 신제품개발과 관련된 지식 또는 노하우를 습득하는 데 영향을 미치는 요인들을 지식관련, 합작기업관련, 파트너관련변수로 분류하여 각 요인과 지식습득정도와의 관계에 대한 가설들을 자원·지식기반관점과 거래비용이론에 근거하여 도출하였다. 본 연구는 67개의 설문응답을 기초로 진행되었으며, 실증분석 결과 합작기업관련 요인인 학습역량과 합작동기가 지식습득정도와 정의 유의한 관계에 있음이 검증되었다. 또한 파트너관련 요인인 파트너간의 갈등이 높을수록 지식습득의 정도가 낮을 것이라는 가설도 유의수준 내에서 채택되었다. This paper understands cross-border joint ventures as one of the means to absorb knowledge from partners. Based on a resource-based perspective, a knowledge-based viewpoint, and transaction costs theory, determinants of knowledge acquisition within international joint ventures (IJVs) are grouped as knowledge-, IJV, and relation-specific. We have gathered 67 survey questionnaires, which were used to test hypotheses with multiple regression model. The test results indicate that firms' absorptive capacity and motivation of IJV have positive relations with the degree of knowledge acquisition. Conflict among partners has a negative impact on knowledge acquisition as expected.

기(氣)수련이 스트레스 반응에 미치는 영향

박미숙,이명수,정영자,김혜정,문성록,김용규 한국스포츠심리학회 2003 한국스포츠심리학회지 Vol.14 No.3

본 연구는 스트레스 반응을 측정하는 스트레스 반응 척도 설문지(Symptoms of Stress: SOS)를 이용한 횡단적 연구로서 심신수련의 하나인 기수련이 스트레스 반응에 미치는 효과를 살펴보았다. 72명의 건강한 정상인과 180명의 기수련자를 대상으로 하여 조사하였으며, 기수련자들은 수련기간에 따라 초급군(1-4개월; 64명), 중급군(5-12개월; 50명), 고급군(1년 이상; 66명)로 나누었다. 실험결과 1년 이상 수련한 기수련자들이 말초혈관 증상군, 심폐 증상군, 중추신경계 증상군, 위장계증상군, 습관적 행동 형태군, 우울 증상군, 불안증상군등의 스트레스 반응 하위척도에서 대조군에 비해 통계적으로 유의하게 감소하였다. 전체 스트레스 값은 대조군에 비해 기수련자 집단이 아주 낮았으며 수련기간이 길수록 감소하였다. 이러한 결과는 기수련이 스트레스 중재와 스트레스 증상을 줄이는데 효과가 있음을 나타낸다. We examined the effects of Qi-training, one of Korean traditional psychosomatic training, on stress coping ability by cross-sectional investigation with inventory of symptoms of stress (SOS). Four types of groups- normal healthy (n-74), three groups of Qi-trainees (group primary level: subjects with Qi-training for 1-4months, n=64; middle level: 5-12 months, n=50; high level: more than 12 months, n=66) participated in this study, Qi-trainees with over 1 year training had significantly lower scores in all SOS subscales compared to controls. Total stress scores of Qi-trainee groups were substantially lower than controls and further reduction with larger training periods. These results suggest Qi-training is effective in stress management and decreasing symptoms of stress