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압저항형 압력센서를 위한 BiCMOS 신호처리회로의 설계
이보나,이문기 ( Bo Na Lee,Moon Key Lee ) 한국센서학회 1996 센서학회지 Vol.5 No.6
In this paper, we have designed signal conditioning circuitry for piezoresistive pressure sensor. Signal conditioning circuitry consists of voltage reference circuit for sensor driving voltage and instrument amplifier for sensor signal amplification. Signal conditioning circuitry is simulated using HSPICE in a single poly double metal 1.5um BiCMOS technology. Simulation results of band-gap reference circuit showed that temperature coefficient of 21 ppm/℃ at the temperature range of 0 - 70℃ and PSRR of 80 dB. Simulation results of BiCMOS amplifier showed that do voltage gain, offset voltage, CMRR, CMR and PSRR are outperformed to CMOS and Bipolar, but power dissipation and noise voltage were more improved in CMOS than BiCMOS and Bipolar. Designed signal conditioning circuitry showed high input impedance, low offset and good CMRR, therefore, it is possible to apply sensor and instrument signal conditioning circuitry.
방과후 학교 체육프로그램이 청소년의 신체적 자기개념에 미치는 효과에 대한 메타분석
이보나 한국사회체육학회 2022 한국사회체육학회지 Vol.- No.90
Purpose: The purpose of this study is to perform a meta-analysis of the effects on adolescents’ physical self-concept of the after-school physical education program Method: A meta-analysis was conducted of 21 publications selected toa nalyze the effects. The analysis was performed using the Comprehensive Meta-Analysis (CMA) 3.0 Program. Heterogeneity tests were also performed using the Q test and the I² statistic. Results: First, the overall effect of the after-school physical education program on the physical self-concept among adolescents was found to have a medium effect (ES=.665). Second, physical self-concept had a medium-to-large effect on the after-school physical education program among adolescents. Third, there were no statistically significant differences in age and gender (p>.05). Conclusion: According to the results of this study, the after-school physical education program is a very effective intervention program to improve the physical self-concept among adolescents. Based on the results of this study, it is imperative that an effective afte-rschool physical education program be applied among adolescents.
태권도 프로그램 참여가 신체적 자기개념에 미치는 효과에 대한 메타분석
이보나 대한무도학회 2023 대한무도학회지 Vol.25 No.2
본 연구에서는 메타분석을 통해 태권도 수련 유무가 신체적 자기개념에 미치는 효과를 확인하고 효과크기를 알아보는 것이 목적이다. 2000년 1월부터 2022년 12월까지 학위논문과 학술지 논문을 분석 대상으로 하였고, 태권도 참가 유무와 신체적 자기개념의 영향을 포함한 총 12편, 103개의 효과 크기를 추출하여 분석하였다. 첫째, 태권도 수련 유무와 신체적 자기개념은 중간 효과 크기를 나타냈다. 둘째, 신체적자기개념의 하위요인에 따른 효과 크기를 분석한 결과는 모두 정적인 효과 크기로 나타났고, 통계적으로유의한 차이가 있었다. 셋째, 연령에 의한 효과 크기를 분석한 결과는 통계적으로 유의한 차이는 없었다. 따라서 본 연구는 태권도 프로그램 참여는 신체적 자기개념에 미치는 영향을 체계적으로 분석하고, 효과크기를 객관적으로 제시함으로써 신체적 자기개념 향상을 위해 태권도 프로그램이 도움을 줄 수 있다는것에 대한 객관적인 근거자료를 제공하였다는데 의의가 있다.
나트륨 저감 제품에 대한 태도, 수용도 및 나트륨 인지가 나트륨 저감 식품 구매의도에 미치는 영향 - 식품전문가를 중심으로 -
이보나,김진우,Lee, Bo-Na,Kim, Jin-woo 한국식품영양학회 2016 韓國食品營養學會誌 Vol.29 No.1
This research study aimed to examine the seriousness related to sodium over intakes that is becoming a global issue, evaluate how the recognition of sodium-reduced products and its acceptance can influence the intention of purchasing sodium-reduced products, and generate basic data for establishment of marketing strategy of campaigns such as reducing sodium intake and commercialization of sodium-reduced products. According to the results of the research, the acceptance of sodium-reduced products significantly influenced the purchasing intention of sodium-reduced products, while the attitude towards sodium and recognition of sodium did not significantly influence the purchasing intention of sodium-reduced products. Extension of these research findings to ordinary people and the analysis of main causes that affect the recognition of sodium-reduced products and purchasing intention provide a solid basis for efficient sodium-reduction publicity and development of directions for campaigns.
이보나,정승민,이문기 경북대학교 센서기술연구소 1991 센서技術學術大會論文集 Vol.2 No.1
A monolithic silicon pressure sensor with signal conditioning circuitry has been fabricated and measured. The signal conditioning circuitry having temperature-compensated frequency output with good linearity which proportional to applied pressure,achieves a 167 ppm/℃ temperature coefficient(TC) of output frequency at the temperature range of 0℃-50℃.The measured value is compatible with simulation value.
집적화된 실리콘 압력센서의 출력전압 보상파라미터 추출 및 그 특성
이보나,김건년,박효덕,신상모,이경탁,김찬,권혁채,이상조,박현주 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1
An integrated silicon pressure sensor has been designed, fabricated and tested. The signal conditioning circuits were designed to include calibration and temperature compensation of output voltage through trimming of diffusion and ion-implanted resistors. Before trimming of resistors, the compensation parameters such as pressure sensitivity, temperature coefficient of pressure sensitivity, temperature coefficient of piezoresistors and pressure sensitivity of piezoresistors were measured. Then offset voltage, span, and temperature coefficients of offset voltage and span were calibrated by trimming of resistors. The measured output voltage met our design specification and simulation value above room temperature. But, the measured output voltage at -30°C deviated from our design specification and simulation value because the offset voltages were found to vary randomly as a function of temperature.
이보나,정익중 한국사회복지연구회 2023 사회복지연구 Vol.54 No.2
The purpose of this study is to explore in-depth and understand the self-disclosure experience of youth leaving residential care. For this purpose, the study was conducted in a qualitative case study method through individual in-depth interviews. A total of 11 young adults aged 18 years or older who had been independent for at least 1 year and less than 10 years after leaving residential care, participated in the study. As a result of the analysis, 4 themes and 15 sub-themes were derived: ‘A story I did not want to reveal’, ‘The moment I brought up my story first’, ‘Unintentionally organized relationships’, and ‘The process of growing up in worries'. Through this study, the self-disclosure experience of youth leaving residential care could be identified as the main theme, ‘The moment to be tested every time’. Based on the results of the study, policy and practice measures were suggested so that the self-disclosure of youth leaving residential care would no longer be judged by social prejudice and discrimination in society. 본 연구의 목적은 시설 퇴소 청년의 자기공개 경험을 심층적으로 탐색하고 이해하는 것이다. 이를 위해 개별 심층면접을 통한 질적사례연구 방법으로 연구를 수행하였다. 퇴소 후 자립한 지 1년 이상 10년 이내인 만 18세 이상의 시설 퇴소 청년 총 11명이 연구에참여하였다. 분석 결과, ‘굳이 드러내고 싶지 않았던 이야기’, ‘그 이야기를 처음 꺼내는 순간’, ‘의도치 않게 정리된 주변 관계’, ‘고민속에 성장해가는 과정’의 4개 주제와 15개의 하위주제가 도출되었다. 본 연구를 통해 시설 퇴소 청년의 자기공개 경험은 중심주제인‘매번 시험대에 올라야 하는 순간’으로 파악되었다. 연구 결과를 바탕으로 시설 퇴소 청년의 자기공개가 더 이상 사회의 편견과 차별의심판대에 오르지 않을 수 있도록 정책적, 실천적 방안을 제시하였다.