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      • KCI등재

        MMIC 응용을 위한 초소형 능동형 90<sup>∘</sup> 전력 결합기

        박영배,윤영,Park, Young-Bae,Yun, Young 한국전자파학회 2007 한국전자파학회논문지 Vol.18 No.9

        This paper proposes the highly miniaturized active $90^{\circ} power combiner for application to MMIC. Conventional passive $90^{\circ} power combiners can't be integrated on MMIC because of their very larger size. Therefore, the highly miniaturized $90^{\circ} power combiners are required for a development of highly integrated MMIC. For this paper, the highly miniaturized active $90^{\circ} power combiner employing InGaP/GaAs HBT was fabricated on GaAs substrate for application to highly integrated MMIC. A size of fabricated active $90^{\circ} power combiner was $2.42{\times}1.05$ mm, which was 2.2 % of conventional passive $90^{\circ} power combiner. The fabricated active $90^{\circ} power combiner showed a gain characteristic about 10 dB and a good phase-difference coupling characteristic of $-92.6^{\circ} than conventional passive $90^{\circ} power combiner at 2.4 GHz. The highly miniaturized active $90^{\circ} power combiner exhibited good RF performances comparable to conventional passive $90^{\circ} power combiners. This work is the first report of an active $90^{\circ} power combiner. 본 논문에서는 MMIC 응용을 위한 초소형화된 능동형 $90^{\circ} 전력 결합기를 제안한다. 기존의 수동형 $90^{\circ} 전력 결합기는 매우 큰 크기 때문에 MMIC 상에 집적되어질 수가 없다. 따라서 초소형화된 $90^{\circ} 전력 결합기는 고집적된 MMIC의 개발을 위해 요구되어진다. 본 논문을 위해서 InGaP/GaAs HBT를 이용한 초소형화된 능동형 $90^{\circ} 전력 결합기는 고집적된 MMIC 응용을 위해 GaAs 기판 상에 제작하였다. 제작된 능동형 $90^{\circ} 전력 결합기의 크기는 $2.42{\times}1.05$ mm이며, 이는 기존의 수동형 $90^{\circ} 전력 결합기의 약 2.2 % 정도의 크기였다. 제작된 능동형 $90^{\circ} 전력 결합기는 2.4 GHz에서 기존의 수동형 $90^{\circ} 전력 결합기보다 약 10 dB의 이득 특성과 $-92.6^{\circ}의 양호한 위상차 결합 특성을 보였다. 초소형화된 능동형 $90^{\circ} 전력 결합기는 기존의 수동형 $90^{\circ} 전력 결합기들에 비해서 좋은 RF 성능을 나타내었다. 본 논문은 능동형 $90^{\circ} 전력 결합기에 대한 최초의 보고이다.

      • KCI등재

        호흡패턴에 따른 성인의 심박수 동태 해석

        박영배,한경숙,남동현,Park, Young-Bae,Han, Kyung-Sook,Nam, Tong-Hyun 대한예방한의학회 2010 대한예방한의학회지 Vol.14 No.2

        Objectives : This study aims to evaluate the effects of expiration-to-inspiration time ratio (E/I-ratio) on heart rate, which represents cardiac autonomic function, and cold-heat in the healthy people. Methods : 49 healthy young volunteers(male : female = 32 : 17) were recruited in the study. The participants completed the questionnaire for yin-yang pattern identification and then we measured the chest plethysmogram for respiration signal and the electrocardiogram for NN intervals during different E/I-ratio from 1 to 2. We compared heart rate variability including RMS-SD, VLF, LF and HF, and the trend-cycle factors decomposed from NN interval data by time series analysis among the respective E/I-ratio. We also confirmed the difference on the trend-cycle factors according to the score of the questionnaire for cold and heat pattern identification. Results : There were differences on the trend-cycle factors from NN interval data, but no significant difference on heart rate variability, among the respective E/I-ratio. We also found significant relationship between the trend-cycle factors and the heat pattern identification scores. Conclusions : The results indicate that cardiac autonomic function can be modulated by the E/I-ratio and the modulation will be slower and more tendencious than respiratory sinus arrhythmia.

      • SCOPUSKCI등재

        Analysis on the Elasto-Plastic Peel Test in a Cu/Cr/Polyimide System

        박영배,유진,Park, Young-Bae,Yu, Jin Materials Research Society of Korea 1999 한국재료학회지 Vol.9 No.3

        Cu/Cr/polyimide 계에서 금속박막 두께와 폴리이미드 표면의 플라즈마 전처리 조건에 따른 필 테스트 결과로부터 Park와 Yu의 X-선 측정에 의한 방법과 Moidu등의 이론적 방법을 통애 Cr/polyimide 계면균열의 계면파괴에너지를 구했다. 두 방법으로 구한 박막의 소성일과 계면파괴어네지는 대부분의 경우에 대해 서로 잘 일치하였으며, 이와 같은 실험적 방법과 이론적 방법 모두 계면파괴에너지의 측정에 유용함을 알 수 있었다. 계면파괴에너지는 박막 두께에 거의 무관하였으며, 0.03, 0.036 그리고 0.05 W/$\textrm{cm}^2$의 rf플라즈마 밀도에 대해 각각 $46.8\pm$17.8, $170.3\pm$42.9 그리고 $253.9\pm$44.4 J/$\m^2$의 계면파괴에너지를 얻었다.

      • KCI등재

        Industrialization of New Varieties of Roses Under Condition in the Cordillera, Philippines

        박영배,김진기,황주천,아라실지레디레드,Park, Young-Bae,Kim, Jin-Ki,Hwang, Ju-Chean,Ladilad, Araceli G. The Korean Society for Bio-Environment Control 2008 생물환경조절학회지 Vol.17 No.2

        우리나라 장미산업의 국제화에 대비하여 필리핀 코르딜레라 고냉지 지역에서 생산된 장미의 품질, 수량 및 우수 품종을 연구, 소득 분석을 요약하여 아래와 같이 산업화의 기초자료를 얻기 위해 본 실험을 수행하였다. 절화 내 질적 실험에서는 대비종에 비해 특히 'Jacaranda' 품종은 개화기간 46일, 13일정도의 꽃받침 휨 정도보다 짧은 것으로 나타내므로, 광질, 조사기간 및 온도 등이 영향을 제일 많은 영향을 받는 것으로 볼 수 있었다. 절화 시 'Vicki Brown'와 'Jacaranda' 품종은(개화기간 49일, 13일 꽃 받침 휨 정도 이내) 중, 단초 절화로 분류되는 다른 품종에 비해 단축되는 경향을 보았다. 'Jacaranda', 'Vcki Brown', 'Golden Times', 'Champagne', 'Osiana' 및 'Queen Elizabeth' 품종은 전정에서 46.7일에서 50.77일까지 조기 개화되었으나 'Tineke' 품종은 전정 41일 후에 꽃 받침 휨 정도가 0.5cm에 이르게 되어 개화형성이 늦어짐이 뚜렷하였다. 여기에서 상위 10품종 장미의 순수익은 'American Orange' 품종 $77072, 'Yellow Island' 품종 $39322, 'Frosty Pink' 품종 $27130, 'Champagne' 품종 $24516, 'Coral Pink' 품종 $23992, 'Lara Pink' 품종 $22961, 'Lara Orange' 품종 $17856, 'Grand Gala' 품종 $17645, 'Golden Times' 품종 $20163 및 'Lady X' 품종 $19452 등이다. In days to calyx-flex stage test, flower development affected by light intensity, light duration and the prevailing temperature. As, 'Jacaranda' variety shorter in under 46 days of flower bud formation and 13 days of calyx-flex stage than the other variety with 'Queen Elizabeth' control variety. About cut flower only 'Grand Vicki Brown' (as within 46 days of flower formation, 13 days of calyx stage and 'Jacaranda', both with shorter plants than the other varieties produced cut flower classified as short and medium-stemmed cut flowers. 'Jacaranda', 'Vicki Brown', 'Golden Times', 'Champagne', 'Osiana', and 'Queen Elizabeth (control variety)' flowered earlier from 46.7 to 50.8 days from pruning. Flower development was likewise faster in all the above mentioned cultivars; while 'Tineke' had significantly delayed flower development reaching calyx-flex stage from 0.5 cm bud size after 51.0 days. The top ten high yielding varieties were 'American Orange', with a net income of P3,081,676.00; 'Yellow Island' with P1,572,874.00; 'Frosty Pink' with P1,085,183.00; 'Champagne' with P980,620.00; 'Coral Pink' with P959,669.00; 'Lara Pink' with P918,444.00; 'Lara Orange' with P714,252.00; 'Grand Gala' with P705,787.00; 'Golden Times' with P806,489.00; and 'Lady X' with P778,060.00 net returns.

      • KCI등재

        Power IC용 고신뢰성 Differential Paired eFuse OTP 메모리 설계

        박영배,김려연,최인화,하판봉,김영희,Park, Young-Bae,Jin, Li-Yan,Choi, In-Hwa,Ha, Pan-Bong,Kim, Young-Hee 한국정보통신학회 2013 한국정보통신학회논문지 Vol.17 No.2

        본 논문에서는 program-verify-read 모드를 갖는 고신뢰성 24bit differential paired eFuse OTP 메모리를 설계하였다. 제안된 program-verify-read 모드에서는 프로그램된 eFuse 저항의 변동을 고려하여 가변 풀-업 부하(variable pull-up load)를 갖는 센싱 마진 테스트 기능을 수행하는 동시에 프로그램 데이터와 read 데이터를 비교하여 PFb(pass fail bar) 핀으로 비교 결과를 출력한다. 그리고 모의실험 결과 program-verify-read 모드에서 24-비트 differential paired eFuse OTP와 24-비트 듀얼 포트 eFuse OTP IP의 센싱 저항은 각각 $4k{\Omega}$과 $50k{\Omega}$으로 differential paired eFuse OTP의 센싱 저항이 작게 나왔다. In this paper, a high-reliability differential paired 24-bit eFuse OTP memory with program-verify-read mode for PMICs is designed. In the proposed program-verify-read mode, the eFuse OTP memory can do a sensing margin test with a variable pull-up load in consideration of programmed eFuse resistance variation and can output a comparison result through a PFb (pass fail bar) pin by comparing a programmed datum with its read one. It is verified by simulation results that the sensing resistance is lower with $4k{\Omega}$ in case of the designed differential paired eFuse OTP memory than $50k{\Omega}$ in case of its dual-port eFuse OTP memory.

      • KCI등재

        위상특성을 이용한 공진기의 외적 양호도(Qe) 추출 방법

        박영배,김기래,Park, Young-Bae,Kim, Gi-Rae 한국정보통신학회 2011 한국정보통신학회논문지 Vol.15 No.10

        본 논문에서는 마이크로스트립 선로 공진기와 입출력 단자의 결합 위치에 따른 공진기의 외적 양호도를 위상 특성을 이용하여 구하는 방법을 제시한다. 마이크로파 필터 설계에서 단자 접속 구조로 많이 이용되는 접합 선로 구조와 결합 선로 구조에 대해 단자의 위치와 선로의 폭과 간격에 따른 결과를 제시한다. 이 방법으로 정확한 $Q_e$ 값을 얻을 수 있었고, 이 결과는 결합공진기 필터 설계에 응용될 수 있다. The external quality factor ($Q_e$) is controlled by coupling condition between resonator and input/output ports in design of microwave filter. In this paper, we represent extracting method of external quality factor using phase response for resonator with input/output ports according to position of feed line from microstrip line resonator. The results regarding to position, coupling gap and line width for tapped line and coupled line structure are represented, and we got the exact $Q_e$ value from the this method. This results will be applied to coupled resonator filter design.

      • KCI등재

        경제발전과 종교적 역할 -최근 논의를 중심으로-

        박영배 ( Young Bae Park ) 사단법인 한국교수불자연합회 2009 한국교수불자연합학회지 Vol.15 No.1

        종교와 사회는 밀접한 관계를 가지고 있다. 그 관계의 전형적인 양태는 종교와 사회가 서로 영향을 주고받는 것이다. 특히 종교가 사회변동에 영향을 미치거나 혹은 사회변동 상황이 종교에 영향을 미치는 현상에 대한 연구는 종교사회학의 가장 중요한 연구과제의 하나이다. 본 논문에서는 종교와 믿음이 경제적 발전에 미치는 영향을 기존의 연구결과를 바탕으로 종합적으로 재정리함을 목적으로 한다. 본 논문의 구성은 제2장에서 주요 이론적 배경을 정리하고 제3장에서 사례연구를 통한 종교와 믿음이 경제적 발전과의 연관관계를 분석한다. 제4장에서 본 논문의 종합적 결론을 제시한다. Forget investment and savings rates, worker productivity and wage scales to determine which countries will become richer or poorer. What really stimulates economic growth is whether you believe in an afterlife - especially hell. Barro and McCleary have found after analyzing data collected in 59 countries between 1981 and 1999. "Our central perspective is that religion affects economic outcomes mainly by fostering religious beliefs that influence individual traits such as honesty, work ethic, thrift and openness to strangers." "For example, beliefs in heaven and hell might affect those traits by creating perceived rewards and punishments that relate to ``good`` and ``bad`` lifetime behavior," they wrote. Since the German sociologist Max Weber wrote about the Protestant work ethic and the spirit of capitalism, social scientists have argued that culture -including religious habits- is part of the complex mix that determines a country`s economic health. What distinguishes the work of Barro and McCleary, some scholars said, is that it uses a sophisticated analysis of a huge set of data to quantify the arguments of anthropologists, sociologists and political scientists. "The study`s important less for what they found than that they looked," said Mark Chaves. "They are not the first to look at this but they are the first to look at this as systemically and as rigorously as they have. For forever, people have been saying that culture matters in analyzing economies." Last year, Sapienza, Zingales and Guiso published a paper that did not compare countries but looked at the relationship between religious beliefs and the attitudes shown to foster economic growth. "On average," they wrote, "religious beliefs are associated with good economic attitudes, where good is defined as conducive to higher per capita income." Barro and McCleary also used data from the World Values Surveys and "I find that belief factors play a major role in economic growth, but here is one of the world`s leading economists saying so," Inglehart said, referring to Barro. "When Weber argued that big breakthroughs in economic growth were in Protestant countries, it was at a time when many cultures were shaped by Protestant institutions. His notion in the broadest sense is that belief factors play a role in economic factors."

      • KCI우수등재

        간호대학생의 리더십 생활기술과 성취동기가 셀프리더십에 미치는 영향

        박영배(Park, Young Bae),김명숙(Kim, Myoung Sook) 한국간호행정학회 2017 간호행정학회지 Vol.23 No.5

        Purpose: Nursing students are expected to show self-leadership. For this study, leadership life skills and achievement motivation were examined for their influence on self-leadership in student nurses. Methods: A descriptive study was conducted using a self-report questionnaire completed by 239 nursing students. Data were analyzed using t-test, one way ANOVA, Scheffé test, Pearson correlation coefficients, and stepwise multiple regression analysis with SPSS 20.0 program. Results: The mean score for self-leadership was 3.49, for leadership life skills, 3.65, and for achievement motivation, 3.42. There were significant differences in self-leadership according to task orientation (β=.25, p<.001), responsibility (β=.24, p<.001), challenge spirit (β=.22 p<.001), future orientation (β=.16, p=.001), leadership life skills (β=.08, p=.009), and interpersonal relationships (β=-.09, p<.001). The explanation power of the regression model was 51.1% and it was statistically significant (F=41.87, p<.001). Conclusion: The results of this study show that factors influencing self-leadership are leadership life skills and achievement motivation. Therefore, it is necessary to develop intervention programs to improve self-leadership in nursing students for enhancement of task orientation, responsibility, challenge spirit, future orientation, and leadership life skills.

      • KCI등재

        영어사연구 방법론 - 영어사연구의 올바른 정립을 위하여

        박영배(Park Young-Bae) 한국영어학학회 2006 영어학연구 Vol.- No.21

          In this paper the entire articles contributed to the official journal of the English Linguistics Society of Korea (ELSOK) are first of all classified in order to provide a bird"s-eye view on the development of English historical linguistics in Korea. For this purpose, 217 articles in twenty volumes from the first publication of the journal (1995) to the recent one (2005) were collected and analysed. And then the history of research and methods of the history of English in Japan and Europe is introduced in a comprehensive but not an exhaustive manner with their long history of the research on the subject and the current state of affairs of research is meticulously reviewed. The one-hundred-year study of the history of the English language in Japan is particularly introduced here with some academic societies related to the research of the history of English and their recent activities. Lastly, some admonitions of stimulating and extending the researches of historical English language and linguistics in Korea farther afield are provisionally proposed.

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