특집명 : 소프트웨어 테스팅 ; 임베디드 소프트웨어 테스트 기술 동향 및 계층 통합 유형에 따른 테스트 방안

성아영 한국정보처리학회 2011 정보처리학회지 Vol.18 No.1

학문 목적 한국어 교육의연구 동향 분석 및 연구 방안 제언

성아영,이경 한국국어교육학회 2016 새국어교육 Vol.0 No.106

본 연구는 2015년까지의 학문 목적 한국어 교육과 관련된 학위 논문들을 살펴보고 그 동향을 분석하여 향후 연구 방향에 대해 제언을 하는 것을 목적으로 한다. 이를 위해 우선 학문 목적 한국어의 개념과 그 범위에 대해 정리하였고, 학문 목적 한국어 교육의 연구 동향을 살펴보기 위해 2015년까지의 연구를 시기별․유형별, 학습자 특성별, 언어 기능별, 주제별로 나누어 분석하였다. 그 결과 학문 목적 한국어 교육에 관한 연구는 지속적으로 증가하였으며, 특히 ‘중국어권’ 학습자들을 대상으로 한 연구와 ‘쓰기’에 관한 연구가 눈에 띄게 많았다. 또, ‘교육 방법’에 관한 연구가 가장 많이 이루어졌음을 알 수 있었다. 학문 목적 한국어 교육에 관해 많은 연구들이 이루어지고는 있으나 다소 편향된 연구 경향을 보였다. 향후에는 중국어권 이외에 다양한 언어권 학습자들을 위한 연구가 이루어져야 하며, 언어 기능 면에서도 더 다양한 연구들이 필요하다. 또, 언어 기능 간 연계 연구와 학습 전략과 같은 학습자를 위한 연구들이 더 많이 이루어져야 할 것이다. The purpose of this study is to analyze the trends in the field of the Korean language education for academic purpose, and to propose the further research directions by analyzing the thesis related to the Korean language education for academic purposes until 2015. In order to accomplish this research purpose, researchers defined the concept and definition of Korean language education for academic purposes first. To analyze trends, researchers divided them into times, types, students’ characteristics, language functions and subjects. The results showed that studies on the Korean language education for academic purpose were constantly increasing, especially on ‘Chinese-speaking’ students and ‘writing’. However, most studies had been made about the teaching methods. According to the result, many studies have been done on the Korean language education for academic purposes, but the tendency of these researches was biased. In the future, various studies should be done in addition to Chinese-speaking learners, and more researches in terms of language features are in needed. Finally, there should be more studies on inter-linked language functions and studies for learners, such as studies on learning strategies.

Preparation and characterization of ophthalmic polymers containing silicon nanoparticles

성아영,김태훈 한국화학공학회 2012 Korean Journal of Chemical Engineering Vol.29 No.9

HEMA, MMA, NVP, EDGMA, and 3-vinylanisole were copolymerized with Si nanoparticles and silicon 2,3-naphthalocyanine bis (trihexylsilyloxide) for ophthalmic application. The physical, optical, and surface characteristics of the contact lens copolymers were investigated to examine the usefulness of the above nanomaterials as components for contact lenses. The water content and the refractive index were in the range of 26.03-37.61% and 1.435-1.479, respectively. Meanwhile, the tensile strength ranging from 0.156 to 0.802 kgf increased with increasing the addition ratio of 3-vinylanisole. Si nanoparticles reduce spectral transmittance in all wavelengths, whereas for silicon 2,3-naphthalocyanine bis (trihexylsilyloxide) the transmittance of visual light increased but the transmittance of UV and near infrared decreased. High contact angle was observed for contact lenses containing both Si nanopowder and silicon 2,3-naphthalocyanine bis (trihexylsilyloxide). The water content of contact lenses was not significantly affected by the addition of 3-vinylanisole. Nanomaterials such as Si nanoparticles and silicon 2,3-naphthalocyanine bis (trihexylsilyloxide)can be used for manufacturing hydrogel soft contact lenses with UV-blocking capabilities if the intensity and the wettability of the surface are properly controlled.

POLYMERIZATION OF HEMA IN THE PRESENCE OF PHENYLSILANES

성아영,Sung, A-Young 한국안광학회 2001 한국안광학회지 Vol.6 No.2

Phenylsilane들과 2-Hydroxyethylmethacrylate(HEMA)의 광중합은 말단기에 phenylsilyl기를 포함하고 있는 poly(HEMA)s를 생성시킴으로써 열중합과 같은 결과를 보였다. 중합반응 동안에 실란의 몰비율이 증가함에 따라 중합수율과 고유점도는 감소하였으며, TGA 잔여수율과 Si-H IR 신축띠의 상대적 세기는 증가하는 경향을 보였다. phenylsilanne은 HEMA와의 광중합 반응에서 연쇄개시제와 전달물질로 중요한 영향을 주었다. The bulk photopolymerization of 2-hydrxyethylmethacrylate(HDMA) with phenylsilane was perforemed to produce poly(HEMA)s containing phenylsilyl moiety presumably as an end group. This result, are the same as that of thermal polymerization. It was found that while the polymerization yields and intrinsic viscosities decreased, the TGA residue yields and the relative intensities of SiH IR stretching bands increased with increasing molar ratio of phenylsilane over HEMA. The phenylsilane seemed to significantly influence on the photopolymerization as both chain initiation and chain transfer agents.

THERMAL POLYMERIZATION OF 2-HYDROXYETHYL METHACRYLATE WITH PHENYLSILANS

성아영,Sung, A Young 한국안광학회 2000 한국안광학회지 Vol.5 No.2

Poly(HEMA)는 소프트 콘택트렌즈의 재료로써 널리 사용되어 왔다. $phSiH_3$, $phMeSiH_2$, $ph2SiH_2$와 같은 다양한 hydrosilane들과 hydroxyethyl methacrylate(HEMA)와의 열중합은 Phenylsilyl 말단기를 포함하는 poly(HEMA)를 생성시켰다. 열중합 반응 동안에는 Phenylsilane의 농도가 증가함에 따라 고분자의 분자량과 고분자 수득률이 감소됨을 보였으며 광중합 반응에서 보다 중합 수득률, 고분자의 분자량, TGA 잔여 수율 등이 더 높았다. Poly(HEMA)s have been used as the optometric material for the preparation of soft contact lens. The bulk thermal polymerization of 2-hydroxyethyl methacrylate (HEMA) with various hydrosilanes such as $phSiH_3$, $phMeSiH_2$, and $ph2SiH_2$ were performed to produce poly(HEMA)s containing phenylsilyl end moeity. It was found for thermal polymerization that while the polymerization yield and polymer molcular weights decreased as the relative phenylsilane concentration increases, the TGA residue yields and the relative intensities of SiH IR stretching bands increased as the relative hydrosilane concentration increases over HEMA. The polymerization yield, molecular weight, and TGA residue for the thermal polymerization were higher than those for the photo polymerization. Thus, the hydrosilanes significantly influence on the polymerization as both chain-initiation and chain-transfer agents.

Optical application of poly(HEMA-co-MMA) containing silver nanoparticles and N,N-dimethylacrylamide

성아영,Tae-Hun Kim 한국화학공학회 2012 Korean Journal of Chemical Engineering Vol.29 No.5

High functional ophthalmic lens materials, poly(HEMA-co-MMA)s, were prepared by the copolymerization of HEMA, MMA, NVP, EDGMA, and N,N-dimethylacrylamide in the presence of silver nanoparticles. Silver nanoparticles have antimicrobial properties and a hydrophilic monomer N,N-dimethylacrylamide has excellent biocompatibility and oxygen transmissibility. The water content was in the range of 36.63-44.45%, indicating the characteristics of general water-content contact lenses, and the refractive index was measured to be in the range of 1.423-1.435. Meanwhile,the oxygen transmissibility ranged from 10.63×10−11 to 18.85×10−11 (cm2/sec)(mlO2/ml×mmHg) increasing with increasing the addition ratio of N,N-dimethylacrylamide. The polymeric materials satisfied the basic characteristics required for ophthalmic contact lenses. The polymers can be used to fabricate antimicrobial hydrogel contact lenses with high oxygen transmissibility.

안경렌즈 굴절력의 신뢰성 평가에 관한 연구

성아영,김태훈,예기훈 대한시과학회 2007 대한시과학회지 Vol.9 No.3

This study is to investigate the refractive power of spectacle lenses, which are being sold in Korea and evaluate reliability of refractive power. We used samples of three hundred and ninety eight spectacle lenses of eight company in total. Refractive indices of each samples which were used in experiment were medium index (1.55~1.56), high index(1.60~1.61) and extra high index(1.67). We tested the errors and conformity of refractive power of spectacle lenses by using the medical instrument standard of KFDA. We found that they deviated from the permitting value in many spectacle lenses and the conformity of refractive power was 81.61% in total spectacle lenses. 본 연구는 국내에 유통되고 있는 안경렌즈의 굴절력을 조사하여 안경렌즈 굴절력의 신뢰 성을 평가하였다. 실험에 사용한 렌즈는 굴절률별로 중굴절(1.55~1.56), 고굴절(1.60~1.61), 초고굴절(1.67) 렌즈 총 8개 회사 398개를 사용하였으며, 식품의약품안정청의 의료기기에 대 한 기준규격을 사용하여 렌즈 굴절력의 오차와 적합률을 실험하였다. 많은 렌즈에서 굴절력 허용오차를 벗어났으며 전체 안경렌즈에서 81.61%의 적합률을 나타내었다.

Study on the Comparison Between Contact Lens Wear and BUT Value

성아영,김태훈,예기훈 대한시과학회 2010 대한시과학회지 Vol.12 No.1

Purpose : In this study, we measured the average Tear Film Break-Up Times using the Tear Film Break-Up Time (BUT) test, which is used as a method for diagnosing dry eye and evaluating tear films. We compared BUT test results between contact lens wearers and non-wearers. Methods : We checked the BUT values of 155 adults (310 eyes) in twenties to forties who didn't have any ophthalmic diseases that could affect the quantity of tear condition. Results : The male average value is 12.585±3.999 seconds, and the female average value is 9.761±3.339 seconds. Males have a higher average BUT value, but this tends to decrease for older men. Our findings showed that the BUT of contact lens wearer is 10.516±3.244 seconds and that of non-wearer is 12.198±4.158 seconds(p < 0.05). Conclusions : The average BUT value has decreased when compared to prior research. This BUT value decrease can be judged by the decrease of the stability of the tear film.

바닥상태 및 들뜬상태에서 날리딕산 수용액의 해리에 관한 연구

성아영,이형철 대불대학교 1999 論文集 Vol.5 No.1

The ionization structure and ionization constant of nalidixic acid have been studied in the ground-and excited states at room temperature. The nalidixic acid has two chromophore in aqueous solution and the hydrogen atom combined in the carboxyl group of the molecule was dissociated in the aqueous solution. The ionization constant of nalidixic acid in the ground state was determined by spectrophotometric method and by potentiometric titration method. The pKa value of the substance was found to be 6.35 in aqueous solution. In the excited state, it was found to be 1.75. This result indicates that dipole moment of the molecule increased in the excited state very much rather than in the ground state.

내장형 시스템의 상호작용 오류 감지를 위한 테스트 데이타 선정 기법

성아영,최병주 한국정보과학회 2003 정보과학회논문지 : 소프트웨어 및 응용 Vol.30 No.12

As an Embedded system combining hardware and software gets more complicated, the importance of the embedded software test increases. Especially, it is mandatory to test the embedded software in the system which has high safety level. In embedded system, it is necessary to develop a test technique to detect faults in interaction between hardware and software. In this paper, we propose a test data selection technique using a fault injection technique for the faults in interaction between hardware and software in embedded system and we apply our technique to the Digital Plant Protection System and analyze effectiveness of the proposed technique through experiments. 하드웨어와 소프트웨어가 조합된 내장형 시스템이 복잡해지면서, 내장형 시스템에 탑재되는 내장형 소프트웨어 테스트가 중요하게 인식되고 있다. 특히, 원자력 발전소와 같이 안전 등급이 높은 시스템에 들어가는 소프트웨어 테스트는 필수적이다. 내장형 시스템 테스트의 경우 하드웨어와 소프트웨어의 상호작용에 의해 발생하는 오류를 발견하기 위한 효과적인 테스트 기법이 필요하다. 본 논문에서는, 하드웨어와 소프트웨어 사이의 상호작용에 의해 생성되는 오류를 발견하기 위하여, 오류 삽입 기법을 이용한 테스트 데이타 선정 기법을 제안하고, 이 기법을 Digital Plant Protection System에 적용하였으며, 실험을 통해 제안한 기법의 우수성을 분석한다.