긴 인식 거리를 가진 후엽이 없는 Yagi-Uda형태의 UHF RFID Tag 안테나

이경환,정유정 대구대학교 정보통신연구소 2006 情報通信硏究 Vol.4 No.1

이진 웨이브렛 변환을 이용한 신경회로망의 필기체 문자 인식

이정문,유경산 江原大學校 産業技術硏究所 1997 産業技術硏究 Vol.17 No.-

In this paper, we propose a new neural pattern recognition from wavelet transform. We first analysis in BFT(Binary Field Transform) in character image. The proposed neural network and wavelet transform is able to improve learning time and scaling. The ability and effectiveness of identifying image using the proposed wavelet transform will be demonstrated by computer simulation.

활성화 C 단백 내성검사의 정도관리와 한국인의 양성률

이영경,박성섭,이유경,이진숙,함천경,주세익,윤근영,박선양,조한익 대한임상병리학회 1996 대한임상병리학회지 Vol.16 No.6

패션감성의 측정도구 개발에 관한 연구(제2보)

이경희,김유진 한국의류학회 2003 한국의류학회지 Vol.27 No.5

The purpose of this study was to develop the measurement of fashion sensibility and to verify the validity and utility. The survey has been done 91 photos selected in fashion magazines with 25 semantic differential bi-polar scale. The obtained data were analyzed by MDS, Discriminant analysis and Regression analysis. The major findings of this research were as follows. 1. According to the sensibility positioning, fashion image was classified by 4 group and agreed with constructing factors of fashion. 2. As result of the discrimination analysis, distinguishable fashion sensibility among design elements of clothing was related to refined, pleasant, feel like buying sensibility. 3. As result of the regression analysis, Preference was related to looking good, refined, and sweet, Buying needs related to likable, looking good and natural, Riches related to elegant, neat and refined, Pleasure related to looking good, elegant and bright. 4. The fashion design properties were different regarding Preference, Buying needs, Riches and Pleasure. Preference and Buying needs were related to H-line, similarity color combination, cotton and linen, Riches related to brilliance texture, ruffle and flounces, Pleasure related to fit and sexy design of clothing.

패션에 나타난 감성과 감정의 조형적 특성 연구

김유진,이경희 한국의류학회 2004 한국의류학회지 Vol.28 No.1

The purpose of study was to provide effective design strategy and distinguish productions for the consumer′s emotion satisfaction by analyzing formative properties of fashion sensibility and emotion. 54 photos of contemporary costume have been selected which represented the Izard′ DES. The questionnaire consisted of bi-polar 25 pairs adjective scale of fashion sensibility and 18 noun scale of emotion was distributed to 970 male and female living in Pusan area. The data were analyzed by GLM using the statistic SPSS package. The major findings of this research wre as follows. 1. In the clothing formative properties following fashion sensibilities, aestheticism shows significant differences in the silhouette and texture, maturity in the silhouette and color, character in the texture and decoration and feminity in the pattern and color. 2. In the clothing formative properties following emotions, negative emotion shows significant differences in the pattern and silhouette, distress·fear in the silhouette and pattern, arousal in the texture and color, shame in the color and texture and enjoyment in the silhouette and pattern. 3. In the fashion sensibility and emotion following clothing formative properties, each formative property shows differences in fashion sensibility and emotion. This study result will be utilized in the clothing design development in special usage like theatrical costume, discriminated display and advertisement stratge.

Self-etching primer를 이용한 교정용 브라켓 부착시 전단결합강도와 파절양상에 관한 비교연구

김유경,이진우,차경석 대한치과교정학회 2004 대한치과교정학회지 Vol.34 No.4

본 연구의 목적은 산부식과 전처리 과정을 결합하여 접착 단계를 단순화시킨 self-etching primer의 임상적인 유용성을 판단하고자, self-etching primer로 브라켓을 접착하는 방법과 기존의 37% 인산으로 부식 하여 접착하는 방법을 사용하여, 광중합시 사용되는 광원 및 브라켓 종류에 따른 전단결합강도와 접착파절양상에 관하여 비교 연구하는 것이다. 사람의 상하악 소구치를 포매하여 만든 시편을 부식 및 전처리 방법에 따라 각각 37%인산으로 산부식 후 Transbond XT primer를 사용하여 접착한 군과 Transbond Plus self-etching primer를 사용하여 접착한 군으로, 광원 종류에 따라 가시광선과 plasma arc light을 이용하여 중합한 군으로 나누었고, 브라켓 종류에 따라 금속브라켓과 세라믹 브라켓을 사용하여 접착한 군으로 분류하여 각 군간의 전단결합강도와 접착파절양상을 관찰하여 다음과 같은 결과를 얻었다. 1. 광원과 브라켓 종류가 동일한 조건일 때, self-etching primer를 사용하여 접착한 군과 XT primer를 사용하여 접착한 군간의 전단결합강도는 통계적으로 유의한 차가 없었다. 2. 금속브라켓을 접착한 경우, 광원과 부식 및 전처리 방법에 따른 전단결합강도는 통계적으로 유의한 차가 없었다. 3. Self-etching primer와 XT primer를 사용하여 접착한 군 모두에서 세라믹 브라켓을 사용하여 접착한 군의 전단결합강도는 금속브라켓을 사용하여 접착한 군보다 통계적으로 유의하게 컸다(p<0.001). 4. 접착제 잔류지수는 self-etching primer를 사용하여 접착한 군과 XT primer를 사용하여 접착한 군에서 통계적인 유의한 차가 없었으며, 세라믹 브라켓을 사용하여 접착한 군에서 금속브라켓을 사용하여 접착한 군보다 유의하게 커서, 법랑질-레진 접착 계면 부위의 파절이 더 많은 것으로 나타났다. 이상의 결과로 미루어 보아 Transbond Plus self-etching primer를 사용하여 브라켓을 접착하는 것은 적절한 결합강도를 얻으면서도 사용이 간편하고 시술 시간을 단축시킬 수 있으므로 임상적으로 유용할 것으로 판단된다. A self-etching primer that combines the etchant and primer in one chemical compound saves time and should be more cost-effective to the clinician and patient. The purpose of this study was to evaluate the clinical effectiveness of a self-etching primer by measuring shear bond strengths according to various conditions and observing adhesive failure patterns. For this investigation, 120 upper and lower premolars extracted for orthodontic purposes were used and randomly divided into six groups of twenty teeth each. Human premolars were embedded in a metal cylinder with orthodontic resin. Metal brackets and ceramic brackets were bonded with XT primer and self- etching primer by means of XT adhesive. Upon curing, plasma arc light and visible light were used. After bonding, the shear bond strength was tested by Instron universal testing machine, and the amount of residual adhesive that remained on the tooth after debonding was measured by stereoscope and assessed with an adhesive remnant index. The results were as follows: 1. When brackets were bonded, if other conditions remained the same, there was no significant difference in shear bond strength due to the type of primer - either self-etching primer or XT primer. 2. When metal brackets were bonded, there was no significant difference in shear bond strength according to the source of light - plasma arc light or visible light - and type of primer. 3. There was a very significant difference in shear bond strength according to the type of brackets - metal or ceramic brackets. The shear bond strength of ceramic brackets was stronger than metal brackets. 4. When the adhesive failure patterns of metal brackets bonded with self-etching primer were observed by using the adhesive remnant index, the bond failure of the metal bracket occurred more frequently at the bracket-adhesive. The failure of the ceramic bracket, however, occurred more frequently at the enamel- adhesive interface. The adhesive failure patterns of metal brackets bonded with XT primer observed the same patterns. The above results suggest that self-etching primer can be clinically useful for bonding the brackets without fear of a decrease in shear bond strength.

현대패션에 대한 감성과 감정의 관계 연구 (제1보)

김유진,이경희 한국의류학회 2003 한국의류학회지 Vol.27 No.3,4

The purpose of this study was to provide the guidance in more objective and proper clothing design reflecting today's consumers' modes in value consumption by identifying the meaning structure and relationship between fashion sensibility and emotion. The stimulus was 54 photos of contemporary costume which represented the Izard' DES. The questionnaire consisted of bi-polar 25 pairs adjective scale of fashion sensibility and the 18 noun scale of emotion was distributed to 970 male and female living in Pusan area. The data were analyzed by Factor analysis, Correlation analysis and Regression analysis using the statistical SPSS package. The major finding of this research were as follows. 1. Fashion sensibilities consist of estheticism, maturity, character and feminity to represent 57.17% total variance. 2. Emotions consist of negative emotion, distress·afraid, arousal, shame and enjoyment to represent factors. 3. For the relation between fashion sensibility and emotion, they showed significant relationship in most of factors.

폴리에스테르 섬유 감량시스템용 프로세서 타이트레이터 개발

조진호,이흥락,이종현,김명남,구성모,김무영,진경찬,유병희,강민수,김국진 경북대학교 센서기술연구소 1993 연차보고서 Vol.1993 No.-

폴리에스테르 섬유 감량시스템의 제어를 위해서는 처리조 내에서 감량되는 섬유가 목표 감량치에 도달했는지를 판단해 주는 장치가 필요하다. 본 연구에서는 가성소다용액의 초농도 및 섬유 감량 정도의 정확한 측정과 감량 종료시간의 산출 및 이에 따른 종료신호를 발생할 수 있는 폴리에스테르 섬유 감량기 전용의 자동적정장치를 개발하였다. To control caustic soda treatment system for the polyester fabric reduction, we need the device to determine that the fabric has been arrived target reduction value. In this study, we develope an automatic process titrator for the caustic soda treatment system. Major functions of the target titrating system are accurate measurements of the caustic soda concentration and then producing the end point signal for caustic soda treatment system.

초내식성 스테인리스강의 교정용 브라켓에의 적용

추성욱,김경남,김광만,이원유,박용수,이상배 대한치과기재학회 1998 대한치과재료학회지 Vol.25 No.3

Esthetic has become an indispensable factors to consider when choosing a orthodontic fixed appliances. However, most of the brackets used on orthodontics are made of metallic materials because those esthetic alternatives showed several controversies like brittleness, deformation and discoloration. The AISI austenitic classes, 303, 304, 316 and 317 type of stainless steels are frequently used for orthodontic metallic brackets fabrication. The composition of this type of alloy is 18 wt% of chrome, 8 wt% of nickel, 2 to 3 wt% of molybdenum and low carbon contents. They seemed to show relatively good characteristics to fabricate the orthodontic brackets in previous study. But in hostile condition such as low pH containing chlorine ion like saliva they might to be attacked by localized corrosion. The purposes of this study were to evaluate the microstructure, microhardness, corrosion resistance, frictional resistance and cytotoxocity of 316L(MD), AISI 304(AC) and experimentally produced super stainless stell bracket(SS). The results from this study were as follows; 1. MD and AC showed (Cr, Fe)23C6 precipitating in austenite matrix. SS showed small ferrite island forming in matrix. 2. SS showed the highest polarization resistance(Rp). SS seemed to have the highest corrosion resistance since SS showed 0.9 ×10-3 MPY, MD showed 3.7 ×10-3 MPY and AC showed 7.4×10-3 MPY. 3. The friction resistance decreased from 3 days to 4 weeks for SS(p<0.05). MD showed significant differences for the measurement of 3 days, 2 weeks and 4 weeks. AD did not showed significant differences to 3 days but increased at 2 weeks(p<0.05). 4. SS seemed to have the best biocompatibility since SS showed response index of 0/1 (mild), AC showed 1/2 (mild+) at cytotoxicity test. According to these results, SS seemed to have sufficient characteristics to fabricate the orthodontic brackets and superior corrosion resistance compare to AISI 300 type stainless steel which could lower the chance of nickel allergic reaction.

학교행정가의 리더십과 핵심역량에 대한 인식 연구

조경원,한유경,서경혜,조정아,이지은 이화여자대학교 교육과학연구소 2006 교육과학연구 Vol.37 No.1

21세기 지식정보화 사회는 전통적인 학교교육의 변혁을 요구한다. 이에 학교교육 개혁을 성공적으로 이끌어 나아갈 수 있는 교원의 리더십 특히 학교행정가의 리더십이 절실히 요구되고 있다. 그렇다면 지식정보화 사회에서 요구되는 학교행정가의 리더십이란 무엇이며 어떤 역량을 포함하는가? 본 연구는 학교행정가의 리더십과 핵심역량에 대한 선행연구가 학교 현장과는 유리된 채 이론적, 당위적 수준에 그치고 있다는 문제의식에서 출발하여 학교행정가의 리더십을 구성하는 핵심역량이 무엇인가에 대한 교사, 교감, 교장, 행정실장 및 서무부장의 인식을 파악하고 이들 집단의 인식을 비교 분석하는 데 목적을 두었다. 이를 위해 우선 문헌연구를 통해 리더십에 대한 관점과 개념의 변화를 고찰하였고 변혁적 리더십 관점에 기초하여 학교행정가가 갖추어야 할 핵심역량으로 교육적 리더십, 학교 계획 및 조직, 학교교육과정 편성 및 운영, 학교운영, 인적자원 개발, 학교재정 관리, 교육법 이해 및 집행, 학교교육정책 이해, 학교·학부모 및 지역사회 협력, 정보통신기술 활용과 같은 열 가지 역량을 도출하였다. 문헌연구를 통해 도출된 핵심역량에 대한 학교 현장의 관점을 알아보기 위해 초·중·고등학교 교직원을 대상으로 10대 핵심역량의 중요도와 현재 실행정도에 대해 설문조사를 수행하였다. 설문조사에는 144개 학교의 교직원 1,136명이 참여하였다. The purpose of this study is to investigate the perspectives of teachers, vice-principals, and school staff on school administrators' leadership and core abilities. For this purpose, first, we examined the perspectives and concepts of school administrator's leadership and identified 10 core abilities that constitute the school administrator's leadership. Second, we developed a questionnaire to investigate the perspectives of teachers, vice-principals, and school staff on to what extent the 10 core abilities are important and whether their school administrators actually exert these 10 core abilities. Finally, we conducted a survey research, including teachers, vice-principals, and school staff with various years of experiences in elementary and secondary schools in Korea. The findings show that teachers, vice-principals, principals, and school staff consider the 10 core abilities very important for school administrators. However, they perceive that school administrators, in reality, do not exert the 10 core abilities as much as they think these abilities are important. In particular, teachers rated school administrators' leadership relatively low compared to principals, vice-principals, and school staff. The difference between their perception on the importance and exertion of 10 core abilities indicates the need for programs that promote the development of 10 core abilities for school administrators and consequently support the development of school administrator's leadership.