Hydrogenation on Defect Levels of GaAs Epilayer on Si

배인호,강태원,홍치유,임재영,조성환,장진,이완호,Bae, In-Ho,Kang, Tae-Won,Hong, Chi-Yhou,Leem, Jae-Young,Cho, Sung-Hwan,Jang, Jin,Lee, Wan-Ho The Institute of Electronics and Information Engin 1990 전자공학회논문지 Vol.27 No.1

GaAs epilayer was grown on Si(100) substrate using the two-step growth method by MBE. The crystal growth mode have been investigated by RHEED. The hydrogenation effects of GaAs epilayer were studied by DLTS and Raman spectroscopy. The four electron traps in GaAs/Si layer were observed and their activation energy ranged from 0.47 eV to 0.81 eV below the conduction band. After hydrogenation at 250\ulcorner for 3 hours, new trap not observed and electron traps at Ec-0.68, 0.54 and 0.47 eV were almost passivated. Whereas the Ec-0.81 eV level showed no significant change in concentration. From Raman measurement, GaAs epilayer is found to be influenced by the tensile stress.

Si이 고농도로 첨가된 GaAs의 photoreflectance에 관한 연구

배인호,이정열,김인수,이철욱,최현태,이상윤,한병국,Bae, In-Ho,Lee, Jeong-Yeol,Kim, In-Su,Lee, Cheol-Uk,Choe, Hyeon-Tae,Lee, Sang-Yun,Han, Byeong-Guk 한국재료학회 1994 한국재료학회지 Vol.4 No.6

Si이 고농도로 첨가된 n-GaAs(100)의 Photoreflectance(PR)에 대하여 조사하였다. PR 응답은 변조빔 세기, 변조 주파수 및 온도에 의존함음 알았다. 관측된 Frantz-Keldysh oscillation(FKO)으로 부터, 띠간격 에너지($E_o$)와 표면전장(($E_s$)을 결정하였다. 온도가 상온에서 77K로 감소시킴에 따라, 띠간격 에너지는 증가하는 반면에 , 표면전장은 감소한다. 결정성은 $500^{\circ}C$에서 5분간 열처리후 크게 향상되었다. We have investigated on the photoreflectance(PR) of heavily Si-doped n-GaAs. The PR response was found to be dependent of modulation beam intensity, modulation frequency, and temperature. From the observed Franz-Keldysh oscillation(FKO), we determined the band gap energy and surface electric field. As the temperature is decreased from room temperature to 77K, the band gap energy increases while the surface electric field decreases. The quality of crystal was greatly increased after thermal annealing for 5 min at $500^{\circ}C$.

코에 발생한 피부 종양의 해부학적 위치에 따른 특성에 관한 후향적 연구

배인호 ( In Ho Bae ),김민성 ( Min Sung Kim ),나찬호 ( Chan Ho Na ),최훈 ( Hoon Choi ),신봉석 ( Bong Seok Shin ) 대한피부과학회 2019 大韓皮膚科學會誌 Vol.57 No.6

Background: The nose plays an important aesthetic, functional role and is located at the center of the face. Due to the characteristics of its anatomical location, the nose is easily exposed and damaged due to weathering, trauma, and inflammation. Objective: This study aimed to provide information on the most common benign and malignant tumors according to their location on the nose. Methods: A retrospective study was conducted on 217 patients who visited the Department of Dermatology at Chosun University Hospital and underwent biopsy for suspected skin tumors in the past 6 years. The tumor was classified as benign, pre-cancerous, and malignant. Differences in the distribution of the anatomical locations of each disease group were analyzed according to the eight anatomical locations of the nose. Results: Based on the external nose anatomy, the most common site where skin tumors usually occurred was the nasal alar (29%), followed by the nasal dorsum and nasal sidewall (23.5% and 20.2%, respectively). The most common skin tumor was malignant tumor (72.3%), followed by benign tumor (21.1%) and premalignant disease (6.4%). Conclusion: I In this study, among patients who underwent biopsy for suspected tumor in the nose, the most common neoplasm was malignant skin tumor and the most common anatomical location was the nasal alar. Therefore, a rapid diagnosis and treatment of skin tumors that occur in the nasal alar wound be necessary. (Korean J Dermatol 2019;57(6):314∼319)

증강현실을 이용한 가정 중심 청능재활 프로그램의 효과

배인호(In Ho Bae),김진동(Jin Dong Kim),권순복(Soon Bok Kwon) 한국언어치료학회 2016 한국언어치료학회 학술발표대회 논문집 Vol.2016 No.12

Purpose: Augmented reality is a concept distinguished from virtual reality, and it is a technology that allows virtual world to overlap and interact with the real world. In the field of speech language therapy, augmented reality is being treated with interest as a new medium to complement the traditional therapy paradigm. The purpose of this study is to investigate the therapeutic effect and interest of home-based auditory rehabilitation program using augmented reality for children with implanted cochlea implant. Methods: We conducted pre-and post evaluation and intervention program for 3 cochlear implant children. We constructed web application and augmented reality contents (3D model, maker) for research purpose and composed search play activity that can be conducted at home. Results were evaluated by auditory perception score of word-level and therapeutic interest. Results: As a results of auditory perception score in pre- and post evaluation, score increased that subject 1 was 25% from 30% to 55%, subject 2 was 40% from 25% to 65%, and subject 3 was from 25% to 75% to 50%. Results of therapeutic interest for 4 weeks showed that subject 1 were 86(89, 92, 79, 84), subject 2 were 93 (98, 102, 91, 81), and subject 3 were 108.25(108, 113, 111, 101). Conclusions: In case of hearing impaired children, the home-based auditory rehabilitation program using augmented reality improved auditory performance. And, therapeutic interest also showed high degree but decreased over time.

음성인식을 이용한 어음인지역치검사 어플리케이션 개발을 위한 기초연구

배인호(In Ho Bae),김근효(Geun Hyo Kim),박희준(Hee June Park),김진동(Jin Dong Kim),권순복(Soon Bok Kwon) 한국언어치료학회 2015 言語治療硏究 Vol.24 No.4

Purpose: Voice recognition technology (VRT) is expanding to areas beyond the IT field such as automotive, medical, and financial fields. The purpose of this study is to develop a method for a speech recognition threshold (SRT) test based on Google’s VRT and the Android platform. SRT results obtained via the new method were compared with conventional SRT results. Methods: Fifteen normal hearing subjects participated in this study. The mean age was 27.5 years and the mean hearing threshold was 9.8dBHL. We used two sets of word and voice samples from speech spondee word lists. We developed a new application for the purpose of this study and Google provided an open API. We constructed the test environment using a self-developed application connected with audiometry. Both the conventional SRT test and the SRT test based on Google’s voice recognition and Android platform were performed in the same condition. Results: We conducted a non-inferiority trial to identify the equivalence between the conventional SRT test and the VRT based test and identified the voice recognition rate of the SRT application. The SRT based SRT test showed non-inferiority at voice recognition (CI: -1.021~.221, Δ=1) rate and threshold (CI: -.062~.328, Δ=2) compared to the conventional test. Also, the recognition rate of the SRT application using Google's VRT was 98.81%. Conclusions: Voice recognition technology could be applied in SRT tests. The VRT-based SRT test was not significantly different from the conventional SRT, thus it was a clinically effective tool.

디지털 로드 셀 개발

배인호(In Ho Bae),박흥준(Heung Joon Park),박찬원(Chan Won Park),민남기(Nam Ki Min) 대한전기학회 2003 대한전기학회 학술대회 논문집 Vol.2003 No.7

호텔 레스토랑 프로모션 메뉴의 환경요인이 영업활성화 전략에 미치는 영향

배인호(In Ho Bae),전진화(Hwa Jin Jun) 한국조리학회 2007 한국조리학회지 Vol.13 No.1

학교급식 조리종사자의 직무환경과 자기효능감이 직무태도에 미치는 영향

배인호(Bae In Ho),권영국(Kwon Young Guk),장동옥(Jang Dong Ok) 대한관광경영학회 2017 觀光硏究 Vol.32 No.2

본 연구는 경북지역의 학교급식 조리종사원들을 대상으로 직무 외적요인인 직무환경과 내적요인의 자기효능감이 직무태도에 어떠한 영향관계가 있는지를 검증하였으며 이를 통해 조리종사자들이 학교급식에 제공하는 유·무형적 서비스의 질 향상을 모색하고자 하였다. 연구의 목적을 달성하기 위하여 직무환경 4개의 요인(인적환경, 물리적 작업환경, 업무전문성, 급여 관련)과 자기효능감 2개의 요인(자신감, 과업 도전감) 그리고 직무태도 요인(직무만족, 조직몰입)이 도출되었다. 실증분석 결과, 첫째, 직무환경은 급여 관련 요인을 제외한 인적환경, 물리적 작업환경, 업무전문성이 직무만족에 유의한 영향을 미치는 것으로 분석되었고, 조직몰입에는 직무환경 요인 모두가 유의한 영향을 미치는 것으로 조사되었다. 둘째, 자기효능감은 자신감, 과업 도전감이 직무만족에 유의한 영향을 미치는 것으로 나타났으며 조직몰입에는 과업 도전감이 유의한 영향을 미치는 것으로 조사되었다. 연구결과에서 나타난 바와 같이 최적의 직무환경과 높은 자기효능감은 직무태도(직무만족, 조직몰입)를 증진시키는 요인임을 확인할 수 있었으며 직무환경과 자기효능감 그리고 직무태도와의 인과관계를 고찰함으로서 학교급식 조리종사원들의 근무환경 및 작업환경 개선과 더불어 직무향상에 관한 시사점을 제공하였다. This study aimed to seek for the improvement of tangible/intangible service quality providing to school foodservice by verifying the effects of job environment(job external factor) and self-efficacy(internal factor) on job attitude targeting school foodservice employees in Gyeongbuk region. To achieve the objective of this study, total four factors of job environment(human environment, physical environment, work professionalism, wage relation), two factors of self-efficacy(confidence, task challenge), and two factors of job attitude(job satisfaction, organizational commitment) were drawn. In the results of empirical analysis, first, job environment such as human environment, physical environment, and work professionalism except for wage relation had significant effects on job satisfaction while all the job environment factors had significant effects on organizational commitment. Second, self-efficacy like confidence and task challenge showed significant effects on job satisfaction while task challenge had significant effects on organizational commitment. The results of this study showed that the optimum job environment and high self-efficacy enhanced job attitude(job satisfaction, organizational commitment), and also provided implications on the improvement of work environment and job for school foodservice employees by considering causal relations between job environment, self-efficacy, and job attitude.

시니어소비자들이 인지하는 커피전문점의 서비스속성이 브랜드 가치와 브랜드 만족에 미치는 영향관계

배인호(In-Ho Bae) 한국조리학회 2020 한국조리학회지 Vol.26 No.11

다차원 평가를 이용한 이중음성의 성대진동 특성 비교

배인호(In Ho Bae),박희준(Hee June Park),김근효(Geun Hyo Kim),이연우(Yeon Woo Lee),왕수건(Soo Geun Wang),권순복(Soon Bok Kwon) 한국언어치료학회 2016 한국언어치료학회 학술발표대회 논문집 Vol.2016 No.12

Purpose: Diphophonia is generally defined as the perception of two pitch. To evaluate the characteristics of diplophonic voice through direct and indirect methods, we used a multi-channel system. The aim of the study is to compare the sound waveform, electroglottography (EGG), digital kymography (DKG), and two-dimensional digital kymography (2D VKG) characteristics of diplophonic voice at the same time. Second, we tried to compare convenience of discrimination between evaluations methods through reading time required for diplophonia discrimination. Methods: We performed sound waveform, EGG, DKG, 2D DKG test using multi-channel system for 1 normal adult and 14 patients with diplophonic voice (vocal folds palsy, vocal folds polyposis, and muscle tension dystonia). Quasi-periodic perturbation of cycle boundary in sound waveform, quasi-periodic variation in EGG waveform, and metacycle pattern of vocal folds structure in DKG and 2D DKG were compared. And, the read time of three evaluators was measured for each test. Results: First, diplophonia can characterize asymmetric contact of vocal cords, quasi-periodic changes of sound waveform, and metacycle pattern of EGG. Second, the asymmetric vibration patterns of diplophonia can be classified into three types with different frequencies, namely, the left-right vocal folds, anterior-posterior vocal folds, and true-false vocal folds. Third, the reading time was faster in the order of 2D DKG, DKG, EGG and sound waveform. Conclusions: The diplophonia can be classified into three types according to the asymmetric vibration region. Also, 2D DKG using MFES was relatively easy and accurate to evaluate the diplophonia compared to other evaluation methods.