Apollonius의 점의 성질과 복소수

박진석,김향숙,김영미 경북대학교사범대학부속 중등교육연구소 2005 중등교육연구 Vol.53 No.1

내각의 크기가 모두 120° 보다 작은 삼각형에 대해서 Apollonius의 점이 정의되어 있으며, 더욱이 Apollonius의 점은 삼각형의 내부와 외부에 각각 한 개씩 생기지만 수학사에서는 삼각형의 내부에 나타나는 점만을 Apollonius의 점이라 부르고 있다. 본고에서는 삼각형의 외부에 나타나는 점도 Apollonius의 점이라 부르기로 하고, 아울러 이점에 관한 초등기하적인 성질들을 복소수를 활용하여 연구하였다. Let △ABC be a triangle whose angles are all less than 120° . Then there are two points P_(1), P_(2) which satisfy ?? · ?? = ?? · ?? = ?? · ?? ············ (*) as shown in Fig 1. We denote by D_(1), E_(1), F_(1)(resp. D_(2), E_(2), F_(2)) the pedal points from P_(1) (resp. P_(2)) to the sides BC, CA, AB, respectively. Especially the point P_(1) is called the Apllonius point of △ABC. It is well known (cf. [2,3,4]) that P_(1) is the unique point in △ABC such that the pedals D_(1), E_(1), F_(1) from P_(1) to three sides BC, CA, AB makes equilateral triangle. In this paper we investigate some geometric properties concerning the pedals D_(2), E_(2), F_(2) from P_(2) to three sides and prove tha △D_(2)E_(2)F_(2) is also equilateral triangle by using complex numbers. We also find the position of the point P satisfying (*) in △ABC with ∠A=120° .

자기평가가 초등학생의 환경태도에 미치는 영향

박미향,정미선,박원혁 부산대학교 과학교육연구소 2007 교사교육연구 Vol.46 No.2

본 연구는 환경문제의 심각성을 학습자에게 알리고, 환경에 대한 인식 및 태도를 변화시키는 교육적 방안으로서 자기평가의 효과를 알아보고자 한다. 이를 위해 자기평가지를 개발하여 학습자에게 투입한 결과 자기평가 활동에 참여한 학습자들은 첫째 환경에 대해 의지, 실천, 정서적 측면에서 긍정적으로 변화하였으며, 둘째 환경일반, 환경오염, 재활용, 동물보호, 물 절약 등 주제별 환경 문제에 대해서도 그 심각성을 깊이 인식하며 이를 해결하기 위한 대안 구성에 적극적인 태도를 가지는 것으로 조사되었다. 셋째, 이러한 자기평가 활동은 환경에 대한 태도변화에 있어 남학생보다 여학생의 태도변화에 더 의미 있는 것으로 나타났다. 그러므로 환경문제에 대한 학습자의 자기평가 활동은 학습자의 환경에 대한 인식 및 태도변화에 긍정적인 효과를 나타내므로 환경교육에 있어 현장체험 중심의 프로그램이 가지는 활동적·단기적·장소 제한적 이라는 단점을 보완할 수 있을 것으로 기대된다 The purpose of this study is to find out the effectiveness of self-assessment on the elementary school students' attitude toward environment dealing with environmental issue. For this study, 63 participants in the 3rd grade were chosen and divided into two groups. The self-assessment was applied to the experimental group and the control group were taught by the traditional teaching method focused on the teacher's lecture for 10 lessons. To analyze the effectiveness of the self-assessment, the pre- and post-test for the attitude toward environment was applied to both the groups. As a result, the attitude toward environment including the awareness on environment and environmental issues was not significantly different(p>.05) between the experimental and control group in terms of the pre-test score. However, the post-test score of the experimental group turned out higher than that of the control group(p<.05). Especially the post-test score of the female experimental group was more significant than that of the male experimental group(p<.05). Therefore the self-assessment could make a positive effect on the elementary school students' environment attitude.

춘천시 성인들의 수영활동 참가에 관한 연구

박미향,부기원 江原大學校附設體育科學硏究所 1997 江原大學校附設體育科學硏究所論文集 Vol.- No.21

1. Conclision This study has been performed in order to increase the number of participants in swimming, finding out the state of adult swimmers' activities, the reason to do swimming, and the post-swimming effects. This study, using questionnaires to the people ranging from twenties to fifties in an indooe swimming pool in Chunchon, has reached the following conclusion. 1) Most adult swimmers responded that they swim with their swimming club members. Male swimmers, for the mosr part, swim alone but female swimmers do with their members. As they are younger, their swimming parteners are mostly friends or fellow-workers. 2) The swimming career reaches the highest point in 1-3 months. While males have more than one year of career, frmales have 1-3 months. Swimmers in their twenties have swum less than 3 months, showing striking differences campared with the twenties and the forties. 3) Most adult swimmers said that swim for 30-60 minutes a day, with males swimming longer than females. As they are older, the ratio of 30-60 minutes are increased. Swimmers in their twenties responded that they swim more than 60 minutes a day, longer than the twenties and the forties. 4) The adult swimmers mostly swim between 8:00-12:00 a.m., and secondly 5:00-8:00 p.m. Most male swimmes swim between 5:00-8:00 p.m., while females swim between 8:00-12:00 a.m. The twenties mosty swim between 5:00-8:00 p.m., while the thirties and the forties do between 8:00-12:00 p.m. 5) Most of them swim 5 days a week, and then 4 days, 3days in order. 6) The reason to swim reaches the highest ratio in increasing physical strength. Females, compared with males, responded more to the body correcting effect. As they are older, they are interested in management of physical strength, while as they are younger, they swims only for pleasure. 7) To the question what their difficult points in swimming activities are, most of them answered that it's lacking in physical strength. Other answers are swimming time, facility, place in order. While males chose swimming time, females lacking in physical strength. 8) To the question whether they continue to swim or not, they responded affirmatively, with males more positive than females. As they are younger, they responded highly to the item of continuing to swim. 9) There are sexual differences in programs suggested to make swimming popular. Males suggest securing swimming facitilities and devices, while females suggest developing swimming programs. 10) The reason to swim of males is more bolidily than females. The differencies between ages are all p<.01 in ohysical, social, and mental aspects, eith the thirties highest in physical aspect, the twenties highest in social and mental aspects. As a whole, the adults are participating in swimming activities, because of mental factors. 11) The reaserch shows that there are post-swimming effects equally in physical, social, and mental aspects, but the general tendency shows that there are more effects in mental aspects than social and physical ones. 2. Suggestion 1) Various swimming programs should be developed and wide used. Anyone, from infants to adults, should be given opportunity to participate in the programs. 2) The swimming pool authorities need to instruct swimmers effectively so that they can get skilled in the four types of swimming when they slumped 3-6 months after they begin swimming. So many competent swimming instructors should be educated and secured. 3) The programs that encourage the swimmers, who have finished the swimming courses, to organize swimming friendship clubs and take part in many activities such as fin-swimming and skin-scuba.

Bacillus subtilis BK-17이 난소를 절제한 흰쥐의 혈 중 지질 함량 변화에 미치는 영향

박미화,김미향 신라대학교 자연과학연구소 2006 自然科學論文集 Vol.15 No.-

여성은 폐경 시 estrogen에 의해 정상여성보다 심혈관련 질환의 발병률이 높아진다. 따라서 본 연구에서는 혈관관련 질환의 예방에 사용되는 혈전용해제 개발의 목적의 일환으로 갱년기 장애 시 유발되는 체내의 지질 함량 증가에 있어서 Bacillus subtilis BK-17이 미치는 영향을 조사하기 위해 흰쥐에 인위적 폐경을 유도하여 Bacillus subtilis BK-17를 투여함으로써 그에 따른 혈 중 지질 함량에 미치는 영향을 검토하였다. 그 결과 난소절제 후 Bacillus subtilis BK-17추출물 투여는 난소 절제에 의해 야기되는 total-cholesterol 의 증가를 감소시키고, 중성지질을 감소시키며, HDL-cholesterol의 감소를 증가시키는결과, Bacillus subtilis BK-17이 갱년기 장애 시 발생찰 수 있는 지질변화에 효과가 있는 것으로 나타나 혈전 용해제로서의 기능이 있는 것으로 사료되어 진다. Bacillus subtilis BK-17, which was isolated from a decaying rice plant, known as fibrinolytic enzyme. The ovariectomized rat is proposed as an experimental model for the rapid development of menopausal symptoms. Following loss of ovarian function, postmenopausal women display an increased incidence of hypertension and coronary heart disease, which is at least partially attributable to an increase in the total cholesterol, LDL-cholesterol and triglyceride levels, as well as a reduction in the HDL-cholesterol levels. Two groups were surgically ovariectomized (OVX). The third group was sham operated. Sprague- Dawley female rats were randomly assigned to the following groups : sham-operated rats (Sham), ovariectomized control rats (OVX-Control), ovariectomized rats supplemented with Bacillus subtilis BK-17 (OVX-BK17). The aim of this study was to evaluate the effects of the purified fibrinolytic enzyme from Bacillus subtilis BK-17 on the lipid on serum in ovariectomized rats.

반몰입형 가상현실 시스템을 이용한 게임 및 시지각 훈련 컨텐츠 개발

박동규,천미향,한경임 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-

A Fully immersive virtual reality system requires much cost and heavy equipments, therefore still far away from general-purpose equipment. Our system requires only CCD camera and beam projector system for implementing half-immersive virtual reality system. We acquire user's action from CCD camera and show interactive moving picture in 2-dimensional screen space. We implemented some kinds of digital contents on our system, which can be used in interactive computer game and for developing person's sense of eyesight and perception.

웹기반의 가축전염병 발생자료 관리시스템(AIMS) 개발

박병호,김석재,황인진,김시동,남향미,위성환 한국농업정보과학회 2003 농업정보과학 Vol.4 No.1

The AIMS(Anima1 Infectious Disease Data Management System) was developed to collect and analyze data on animal infectious disease outbreak (62 diseases). When an animal infectious disease is confirmed at a diagnostic laboratory, the disease outbreak is then reported to the regional government through AIMS. After the regional government confirms the number of animals infected or dead, outbreak date and etc, this information is reported to the Ministry of Agriculture & Forestry and the National Veterinary Research & Quarantine Service through AIMS. The AIMS analyzes the outbreak data and reports the outbreak statistics by region, month and year to them. In addition, the AIMS can identify the farm where there was an outbreak of the animal infectious disease. There are four user roles : 1) Administrator, responsible for the overall operation of the system. 2) Inspector, responsible for confirmation of the animal infectious disease outbreak. 3) Pathologist, responsible for input to an animal infectious disease at first. 4) Gallery, only able to read the outbreak statistics. The AIMS has been implemented using the ASP technology and is operated on the web to allow easy access. The data, middle and presentation tier are based on MS-SQL 2000 server, Microsoft transaction server and Internet Explorer, respectively. The database's stored procedure was used to improve the performance. In addition to above software, the dextupload software is used to upload the files. By using the AIMS, a more accurate statistics for the animal infectious disease outbreak is expected.

국내 Fabry disease 환자의 a-Galatosidase A 유전자 돌연변이 검색

박기범,최지혜,강윤성,김선미,정향민,문영준,이광호 中央大學校 基礎科學硏究所 2001 基礎科學硏究所 論文集 Vol.15 No.-

Fabry disease(FD) is an X-linked recessive lysosomal disorder caused by a deficiency of a-galactosidase A(a-Gal A), localized at Xq22. Besides onset of pain and paresthesias in the extremities, FD was diagnosed by absence of a-Gal A activity. In this experiment the a-Gal A activity of Korean FD patients was spectrometrically analysed using an artificial substate, 4-Mrthylumbellifery1-a-D-galactoside. As expected, no a-Gal A activity was detected in lymphocytes and lymphoblastoid cells from FD patients. To screen the mutation in their a-Gal A genes, we performed single strand conformation polymorphism(SSCP) and PCR-direct sequencing form seven a-Gal A exons. The nonsense mutation was identified both in classically affected hemyzygotes and a heterozygote. They showed the C to T transition at nucleotide number 11,002, resulting in a arginine-to-stop(R342X). This result will be applicable for pre- and neonatal detection of FD and to define the genotype/phenotype correlation.

사용자 수술명과 수술분류 code(ICD-9-CM) 일치율 향상에 관한 연구 : 수술실 OCS program 사용 활성화를 통하여

최향하,김미영,김도진,유지원,장정화,박수정,박재성 한국의료QA학회 2005 한국의료질향상학회지 Vol.12 No.1

Background : The necessity of unify and standardize codes used at hospital has been emphasized since OCS (Order Communicating System) was adopted. Therefore, the purpose of this study were to standardize operation code by continuous training of the ICD-9-CM code that is used as standard code in OCS program at operating room. Method : In 400 operation data, operation code entered in OCS program at operating room was compared to operation name recorded in medical record. In addition, a matching rate between input data of operation code by medical record department and computing input data of operation code in 3,710 cases was compared for each department. User operation name and operation code were matched and major diagnosis by operation department and operation name were also matched. Results : User operation name was reflected in operation classification code in detail, and operation code entered on user was registered. Input rate and matching rate of operation code were gradually improved after improvement activity. In particular, a matching rate was high at ophthalmology where operation name is segmented. Plastic surgery and orthopedics with a lot of emergency operation and comprehensive operation name show low input rates. Conclusions : As the medical field makes progress in computerlization, awareness of information exchange and sharing becomes higher. Among codes to classified medical institution, codes related to surgical operation are all different by user of hospital and department. Computerlization and standardization is essential. And when efforts of standardization continue in alliance with individual hospital and institution, initiative of preparing medical policy data at a national level will be accelerated.

의복구매상황에 따른 점포선택행동에 관한 연구 : 직업여성의 과제적 상황,시간압박상황을 중심으로

원미향,박은주 한국의류학회 1994 한국의류학회지 Vol.18 No.2

This research has studied situational effects on the perceived risk and store choice behavior. Data were obtained from 388 females with full-time jobs living in Pusan. The results analyzed by Spearman's rank correlation analysis, analysis of variance(ANOVA), t-test and discriminant analysis. The results of this study were as follows; 1. There were significant differences in percieved risk according to the clothing purchasing situations. Performance risk was perceived high in gift-shopping situation and time-pressured situation, and financial risk was perceived high in self-shoping situation. 2. There were particularly significant differences in store attributes evaluation according to the clothing purchasing situations. In self-shopping situation, price, quality and reliability, store loyalty were evaluated as important store attributes. In gift-shopping situation, quality and reliability, product information and in time-pressured situation, store loyalty and product information were evaluated as important store attributes. 3. Consumers preferred national brand franchise stores in self-shopping situation. They preferred department stores in gift-shopping situation and time-pressured situation. The types of selected store were mainly affected by shopping convenience and location convenience.

현대 패션에 표현된 신체장식의 혼성모방 분석

손향미,박길순 한국의류학회 2003 한국의류학회지 Vol.27 No.8

The purpose of this study is to observe the cultural phenomenon in modern society form the point of view of pastiche, analyze the characteristics of pastiche, create a framework for studying modern fashion and body ornamentation, on of the facts of cultural phenomenon and, based on these aspects, will observe the pastiche phase, which occurred in body ornamentation of modern fashion in the late 1990's Collections. The characteristics of pastiche is that it transcends meaning, alters the usage of objects, raises the beauty of alienation and pursues temporariness. Observing pastiche, according to its definition and characteristics, as it appears in body ornamentation of modern fashion, the results were as follows: First of all, in terms of transcending meaning, body ornamentation of modern fashion is a mixture of all past styles. Secondly, use of objects in body ornamentation of fashion has shown the use of things which have never been used in accessorizing before, such as birdcages, bones of body, castle. Third, in terms of the raising of the beauty of alienation, accessories from countries, which were not high interest groups in the past, such as piercing, scar, corpulent, are being used as high-fashion accessories in body ornamentation of modern fashion. Fourth, in terms of the pursuit of temporariness, external ornamentation in body ornamentation of modern fashion is seen as permanent changes to the outer body, such as tattoos, piercings, hair color and the more temporary changes, such as coloring.