원격지에서 모노펄스 레이더의 주파수 위상 교정을 위한 독립된 펄스반복주파수 생성 및 제어

양재원,유승오,윤재혁,이동주,Yang, Jaewon,Yoo, Seungoh,Yoon, Jaehyuk,Lee, Dongju 한국군사과학기술학회 2021 한국군사과학기술학회지 Vol.24 No.4

This paper presents a method of independent pulse repetition frequency(PRF) generation and control for frequency phase calibration on mono-pulse radar at a remote location. In order to generate an independent PRF signal of 320[Hz], pulse width modulation(PWM) of 16-bit timer/counter was applied. For a precision control of PRF signal, 16-bit timer/counter interrupt was changed for each period. Therefore, average frequency of PRF could be controlled by 0.0001[Hz]. To calibrate a frequency phase of mono-pulse radar at a remote location, the proposed PRF generator with a precision control of frequency was used regardless of receiving PRF signal from a radar. For the verification of the proposed PRF generator, theoretical analysis and experimental results are included.

경기도 일지역의 문제음주실태와 알코올 미충족욕구 조사연구

양재원,왕수연,황인숙,김선미,배기혜,이홍재,고영훈,Yang, Jaewon,Whang, Soo Yeon,Hwang, In-Sook,Kim, Sun-Mee,Bae, Gi-Hye,Lee, Hong-Jae,Ko, Young-Hoon 한국정신신체의학회 2013 정신신체의학 Vol.21 No.1

연구목적 본 연구는 경기도 일지역의 음주실태, 위험음주와 알코올사용장애의 정도 및 지역사회 음주정책 요구도 조사를 위해 수행되었다. 방 법 연구대상자는 경기도 안산시 거주 19세 이상 65세 미만 성인 1,000명으로 2011년 6월부터 7월까지 두 달 간 조사하였다. 조사설문지는 연구목적에 의해 구성한 사회인구학적 특성 문항, Alcohol Use Disorder Identification Test(AUDIT)와 Cut down, Annoyed, Guilty, Eye-opener(CAGE) 척도, 지역사회 음주문제 해결에 대한 서비스 및 정책 요구도에 대한 문항으로 구성하였다. 자료분석은 SPSS version 18.0 통계프로그램을 이용하였다. 결 과 대상군의 평생음주율은 97.4%이고, 이들 중 21.9%가 주 2~4회 음주 빈도를 보였으며, 유해음주 빈도는 남성의 24.4%로 남성 4명 중 1명은 한 번의 좌석에서 소주 한 병 또는 맥주 4병 이상을 마시는 빈도가 주 1회 이상이었다. 음주시작 연령은 평균 20.3세이나 19세 이전에 음주를 시작하는 경우가 51.6%이었다. AUDIT 척도를 적용한 유해음주 및 알코올사용장애의 비율은 각각 14.9%, 3.3%, CAGE 척도 기준을 적용하였을 때 알코올사용장애자는 9.6%였다. 조사응답자들의 지역사회 음주문제에 대한 서비스 및 정책요구도는 예방교육(57.2%), 치료시설 연계(50.1%), 알코올상담과 개입(41.7%), 그리고 재활프로그램(39.8%) 순이었다. 결 론 본 연구결과, 경기도 도시 지역의 유해음주와 알코올사용장애 등 문제음주의 정도는 높은 비율로 나타나며, 지역주민들의 음주문제 관련 요구도와 음주시작연령에 대한 고려를 통해 효과적인 음주예방프로그램과 정책개발이 요구된다. Objectives : The purpose of this study is to investigate the characteristics of drinking patterns and the prevalence of hazardous drinking and alcohol use disorder with the assessment of alcohol policy needs in community population of urban city in Korea. Methods : Data was collected from 1,000 residents in a single urban city in Korea, from June 1 to July 31, 2011 by a questionnaire. As research tools, socio-demographic characteristics composed of variables based on study purpose, alcohol problems and alcohol use disorder state scales composed with Alcohol Use Disorder Identification Test(AUDIT) and Cut down, Annoyed, Guilty, Eye-opener(CAGE), and the assessment of alcohol policy needs in community population questions were used. Results : The lifetime experience of alcohol drinking was 97.4%. For the frequency of drinking, 21.9% of population responded 2 to 4 times per weekly. 24.4% of male had one time or more high risk drinking, defined as having four or more drinks in a sitting, per week. 51.6% experienced the first time drinking of alcohol in adolescence. The lifetime prevalence of hazardous drinking and alcohol use disorder were 14.9% and 3.3%, respectively using AUDIT. Alcohol use disorder were 9.6% with the CAGE scale. Problem drinking were 8.4% in this study. They requested the program such as prevention education(57.2%), construction of liaison system to treatment facilities(50.1%), alcohol counseling and intervention(41.7%), and rehabilitation program(39.8%). Conclusions : These results demonstrate that alcohol problem and alcohol use disorder were much prevalent, and these problem started in the earlier age. It is necessary to develop an effective alcohol prevention program or policy with considering the needs in community population.

Improved Dissolution Behavior of Aceclofenac Loadings with Kollidon VA 64 Using Spray Drying and Rotary Evaporation Process

Jaewon Yang(양재원),Jin Young Park(박진영),Cheon Jung Lee(이천중),Hye Min Kim(김혜민),Hyun Gu Lee(이현구),Na Gum Jang(장나금),Hyun Ah Ko(고현아),Seon Ah Cho(조선아),Dae Hyeok Yang(양대혁),Gilson Khang(강길선) 한국고분자학회 2015 폴리머 Vol.39 No.1

난용성 약물인 아세클로페낙의 용해도를 개선하기 위해 약물과 고분자의 다른 비율을 사용하여 분무건조와 용매증발의 방법으로 Kollidon VA 64의 고체분산체를 제조하였다. 아세클로페낙을 포접하는 고체분산체의 형태학적, 물리화학적 분석을 하기 위해, 전자주사현미경(SEM), 푸리에변환 적외선분광법(FTIR), 시차주사 열량측정법(DSC) 등이 사용되었다. 포접률과 인공장액에서의 용출 거동은 HPLC를 사용하여 측정하였고, 비교를 위해 원약물과 시판제 Airtal<SUP>®</SUP>이 사용되었다. 이것은 두 가지 방법에 따라 개선된 용출 거동을 나타내었다. In order to improve the poor water solubility of aceclofenac, it was loaded into solid Kollidon VA 64 dispersion prepared by spray drying and rotary evaporation methods using different drug and polymer ratios. Morphology and physicochemical behavior of the aceclofenac loaded solid dispersions was analyzed by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), and differential scanning calorimetry (DSC). Encapsulation efficiency and dissolution behavior in a simulated intestinal juice of aceclofenac in the solid dispersions was measured using HPLC and the latter was compared with that of the active pharmaceutical ingredient (API) and Airtal<SUP>®</SUP>. It was demonstrated that two methods could significantly improve the dissolution behavior of aceclofenac.

Menstrual abnormalities, Polycystic Ovary Syndrome and Psychotropics

Jaewon Yang(양재원) 대한소아청소년정신의학회 2011 대한소아청소년정신의학회 학술대회논문집 Vol.2011 No.4

성인 주의력결핍 과잉행동장애의 약물치료

양재원(Jaewon Yang),김지훈(Ji-Hoon Kim),김재원(Jae-Won Kim),최지욱(Jeewook Choi),홍현주(Hyun Ju Hong),정유숙(Yoo-Sook Joung) 대한소아청소년정신의학회 2012 소아청소년정신의학 Vol.23 No.S

This review examined the treatment of attention-deficit/hyperactivity disorder (ADHD) in adults. It briefly addresses the issues about the cause of hospital visit, diagnosis, and impact of disease, specific to adults. The article focused on the evidence regarding the efficacy and tolerability of short- and long-acting stimulant medications, as well as the non-stimulant medications such as atomoxetine and bupropion in the treatment of the adult ADHD. Generally speaking, variability in diagnostic criteria, dosing parameters and response rates between the various studies were considerable. The aggregated literature shows that both the stimulants and non-stimulants had clinically significant beneficial effect on treating ADHD in adults. Special attention is given to the pharmacological treatment for patients with adult ADHD and various comorbidities. In summary, medications are effective and combined medication and psychosocial treatment is the most beneficial treatment option for most adult patients with ADHD.

한국인 영어학습자의 감정은유 사용능력에 관한 연구

양재원(Yang, Jaewon) 새한영어영문학회 2018 새한영어영문학 Vol.60 No.2

This study aims to examine Korean English learners’ competency of English emotion metaphors in given contexts and compare their metaphor competency with that of native speakers. Furthermore, it looks into the participants’ English vocabulary learning strategies that might affect their metaphor acquisition. 84 Korean college students and 24 English native speakers participated in this research. The questionnaire contains a metaphor assessment and their English learning strategy assessment. The results reveal most Korean English learners struggle to understand the English metaphors that especially underwent severe semantic changes from their original literal meanings. Also, their current English vocabulary learning strategy seems to have little effect on their English metaphor acquisition. These results imply that the theory of conceptual metaphor as well as analogical reasoning process training can be helpful for the struggling English metaphor learners with a thirst for theoretical approaches and novel pedagogical assistance.

한국인 영어학습자와 원어민간 촉진어 사용 양상 연구

양재원(Yang, Jaewon) 새한영어영문학회 2017 새한영어영문학 Vol.59 No.2

This study aims to first examine the variation of Korean English Learners’ usage of boosters and to compare it in a given context with that of native speakers. Secondly, it looks into students’ English learning motivations and strategies that might affect their booster acquisition. 86 Korean high school students and 17 English native speakers participate in this research. The questionnaire consists of booster assessment section and the English learning strategy and motivation assessment section. The results reveals that three student groups showed significantly different abilities in using the boosters, and also that most Korean English learners are not familiar with the boosters that have undergone delexicalization process. Also, ‘cognitive strategy’ and ‘classroom ought-to self’ have a significant effect on their English booster competence. These results suggest frequent exposure to natural English booster collocations in corpora and a progressive learning strategies and motivation strategies help Korean English learners.

엔진제어용 RTOS 제어기 개발에 대한 연구

양재원(Jaewon Yang),김현준(Hyunjun Kim),장호연(Hoyoun Jang) 항공우주시스템공학회 2023 항공우주시스템공학회 학술대회 발표집 Vol.2023 No.10

항공용 ARINC664 Part7(AFDX) 네트워크 스위치 설계

양재원(Jaewon Yang),최경식(Kyungsik Choi),윤한수(Hansoo Yoon) 한국항공우주학회 2021 한국항공우주학회 학술발표회 논문집 Vol.2021 No.11

도심지 지하굴착 및 터널시공 예비설계를 위한 인공신경망 개발에 관한 연구

유충식(Chungsik Yoo),양재원(Jaewon Yang) 한국지반신소재학회 2020 한국지반신소재학회 논문집 Vol.19 No.1

본 본문에서는 도심지 지하굴착 및 터널현장의 예비설계 및 지반침하를 예측이 가능한 인공신경망 개발에 대한 내용을 다루었다. 인공신경망의 개발을 위해 먼저 다양한 도심지 터널 및 지하굴착 현장 계측자료를 수집하여 데이터베이스를 구축하고 이를 인공신경망 학습에 필용한 학습데이터를 구축하는데 활용하였다. 개발된 인공신경망은 학습에 활용되지 않은 검증 데이터 세트를 및 현장계측자료를 활용하여 결정계수(R²), 평균제곱근오차(Root Mean Square Error; RMSE), 절대평균오차(Mean Absolute Error; MAE) 등 통계적 파라메타를 근거로 하여 신뢰도를 검증하였다. 개발된 인공신경망은 도심지 굴착현장의 예비 설계 및 이에 따른 주변침하를 예측하는데 효율적으로 활용될 수 있는 것으로 평가되었다. In this paper development artificial neural networks (ANN) for preliminary design and prediction of urban tunnelling and deep excavation-induced ground settlement was presented. In order to form training and validation data sets for the ANN development, field design and measured data were collected for various tunnelling and deep-excavation sites. The field data were then used as a database for the ANN training. The developed ANN was validated against a testing set and the unused field data in terms of statistical parameters such as R², RMSE, and MAE. The practical use of ANN was demonstrated by applying the developed ANN to hypothetical conditions. It was shown that the developed ANN can be effectively used as a tool for preliminary excavation design and ground settlement prediction for urban excavation problems.