계층분석적 의사결정기법을 이용한 데이터베이스 시스템 품질 특성의 선정 방법

박미영,승현우,Park, Mi-Young,Seung, Hyon-Woo 한국비블리아학회 2009 한국비블리아학회지 Vol.20 No.4

It is essential to estimate and evaluate for user satisfaction and quality management of database system, understanding of user needs and quality characteristics. Based on ISO 25000 series, it was suggested, the first research, that 5 main quality characteristics, 21 sub quality characteristics and 48 internal quality characteristics. There are comparative significance methods of main quality characteristics, sub quality characteristics and internal quality characteristics but it is not easy to use directly quality model in database system industry field. Also, Considering time and cost in quality evaluation, it is impossible to evaluate 48 internal quality characteristics and its level of quality evaluation is not equal in accordance with integrity level of database system. By using AHP, this study presents selection method of quality characteristics in weight and possibility of application quality model.

시각장애인을 위한 과학기술정보검색 시스템 및 콘텐츠의 웹접근성 평가

박미영,안인자,박혜수,김인희,Park, Mi-Young,Ahn, In-Ja,Park, Hyei-Soo,Kim, In-Hee 한국비블리아학회 2010 한국비블리아학회지 Vol.21 No.3

본 연구에서는 과학기술정보시스템과 과학기술정보콘텐츠를 대상으로 인터넷 웹콘텐츠 접근성 지침 1.0을 기반으로 평가도구 K-WAH 3.0을 통해 웹접근성을 평가하였다. 과학기술정보시스템과 콘텐츠의 홈페이지의 웹접근성을 평가한 결과 콘텐츠보다 정보시스템의 웹접근성 준수율이 저조하게 나타났다. 이를 통해 웹접근성의 정보시스템과 콘텐츠의 특징과 차이점을 파악하고 향후 개선 방향을 제시하였다. 평가 결과 시스템 사이트가 콘텐츠사이트보다 우수한 것으로 나타났다. 그리고 NDSL을 제외한 과학기술시스템과 콘텐츠 사이트가 '이해의 용이성', '견고성' 준수율이 아주 저조하게 나타났다. 따라서 '이해하기 쉽게', '웹디자인에 화려한 장식을 자제'하는 웹페이지를 만드는 것이 요구된다. This paper evaluates web accessibility using an evaluative measure of K-WAH 3.0. It targets systems and contents in scientific and technological information, based on a guide for 'Internet Web Contents Accessibility 1.0'. The result indicates that web accessibility of informational system is lower than that of informational contents. Based on this fact, this paper identifies the main characteristics and differences of web accessibilities in informational system and contents, and discusses possible improvements. the result of the evaluation found the scientific system sites is more superior than contents sites in web accessibility. And the scientific system and contents sites except NDSL was lest 'understandable' and 'Robust' in observance. Therefore web page that should bring "easily understandable" and "reducing outstanding side effects" was required.

Public Library 2.0 기반 지역 커뮤니티지식정보시스템 개념적 설계

박미영,승현우,Park, Mi-Young,Seung, Hyon-Woo 한국비블리아학회 2010 한국비블리아학회지 Vol.21 No.1

도서관 서비스 혁신이란 지식정보화의 원천기술을 활용하여 '문화적 선도자로서의 변화'를 주도하고 하나의 시스템을 형성해 가면서 공유, 피드백 관계를 통해 새로운 지식을 창출, 상호작용이 활발한 특성화된 고유한 도서관을 만드는 것이다. 본 연구에서는 Public Library 2.0 서비스 모델을 기반으로 도서관의 서비스 혁신을 통한 디지털 지식정보화 시대에 공공도서관의 새로운 비전을 제공하고자 한다. 이를 위해 Public Library 2.0 기반 커뮤니티지식정보시스템 구현을 위한 개념적 설계를 목적으로 하며 연구내용과 연구방법은 다음과 같다. 첫째, 국내외 문헌조사를 통하여 Library 2.0의 정의, 원칙과 구성요소를 조사 분석하여 혁신을 주도하는 Library 2.0 서비스 모델을 제시하였다. 둘째, 국내 외 Library 2.0의 협력 기술인 블로그, 위키, 인스텐트 메세징, 포드캐스팅, 소셜네트워킹, 플리커를 중심으로 적용 사례의 유용성을 조사하였다. 셋째, Public Library 2.0의 정의와 원칙을 살펴보고 Public Librayr 2.0 기반 커뮤니티지식정보시스템 개념적 설계를 통해 공공도서관의 새로운 비전을 제시하였다. 본 연구는 차세대 공공도서관을 위한 개념적 설계를 위한 것으로 시스템 구현과 테스트를 위한 후속연구가 요구된다. It is library service innovation that leading change as cultural leader in advance of original technology of knowledge information, sharing and forming a new system, creating a new knowledge in feedback relationship, and constructing a specified unique library in active interaction. The purpose of this study is to provide public library a new vision based on pubic library 2.0 service model through library service innovation in digital knowledge information age. This study aims to improvement community knowledge information system of conceptual design based on public library 2.0. It is summarized as follows: First, library 2.0 service model is proposed with library 2.0 definition, principle and essential factor through literal and e-journal search. Second, application case is searched centering around library 2.0 cooperating technology of blogs, wiki, instant messaging, podcast, social networking, flickr. Third, public library new vision is proposed by definition and principle of public library 2.0. This study is conceptual design for next generation public library and is needed follow research for system implementation and test.

전착법에 의한 p-형 Sb_xTe_y 박막 형성 및 열전특성 평가

박미영,임재홍,임동찬,이규환,Park, Mi-Yeong,Lim, Jae-Hong,Lim, Dong-Chan,Lee, Kyu-Hwan 한국재료학회 2011 한국재료학회지 Vol.21 No.4

The electro-deposition of compound semiconductors has been attracting more attention because of its ability to rapidly deposit nanostructured materials and thin films with controlled morphology, dimensions, and crystallinity in a costeffective manner (1). In particular, low band-gap $A_2B_3$-type chalcogenides, such as $Sb_2Te_3$ and $Bi_2Te_3$, have been extensively studied because of their potential applications in thermoelectric power generator and cooler and phase change memory. Thermoelectric $Sb_xTe_y$ films were potentiostatically electrodeposited in aqueous nitric acid electrolyte solutions containing different ratios of $TeO_2$ to $Sb_2O_3$. The stoichiometric $Sb_xTe_y$ films were obtained at an applied voltage of -0.15V vs. SCE using a solution consisting of 2.4 mM $TeO_2$, 0.8 mM $Sb_2O_3$, 33 mM tartaric acid, and 1M $HNO_3$. The stoichiometric $Sb_xTe_y$ films had the rhombohedral structure with a preferred orientation along the [015] direction. The films featured hole concentration and mobility of $5.8{\times}10^{18}/cm^3$ and $54.8\;cm^2/V{\cdot}s$, respectively. More negative applied potential yielded more Sb content in the deposited $Sb_xTe_y$ films. In addition, the hole concentration and mobility decreased with more negative deposition potential and finally showed insulating property, possibly due to more defect formation. The Seebeck coefficient of as-deposited $Sb_2Te_3$ thin film deposited at -0.15V vs. SCE at room temperature was approximately 118 ${\mu}V/K$ at room temperature, which is similar to bulk counterparts.

롤투롤시스템을 이용하여 PET 필름위에 제조된 SiO₂-ITO 박막의 색도(b*), 면저항과 투과도 연구

박미영,김정수,강보갑,김혜영,김후식,임우택,최식영,Park, Mi-Young,Kang, Bo-Gab,Kim, Jung-Soo,Kim, Hye-Young,Kim, Hu-Sik,Lim, Woo-Taik,Choi, Sik-Young 한국재료학회 2011 한국재료학회지 Vol.21 No.5

This paper has relatively high technical standard and experimental skill. The fabrication of TCO film with high transparency, low resistance and low chromaticity require exact control of several competing factors. This paper has resolved these problems reasonably well, thus recommended for publication. Indium tin oxide(ITO) thin films were by D.C. magnetron roll-to-roll sputter system utilizing ITO and $SiO_2$ targets of ITO and $SiO_2$. In this experiment, the effect of D.C. power, winding speed, and oxygen flow rate on electrical and optical properties of ITO thin films were investigated from the view point of sheet resistance, transmittance, and chromaticity($b^*$). The deposition of $SiO_2$ was performed with RF power of 400W, Ar gas of 50 sccm and the deposition of ITO, DC power of 600W, Ar gas of 50 sccm, $O^2$ gas of 0.2 sccm, and winding speed of 0.56m/min. High quality ITO thin films without $SiO_2$ layer had chromaticity of 2.87, sheet resistivity of 400 ohm/square, and transmittance of 88% and $SiO_2$-doped ITO Thin film with chromaticity of 2.01, sheet resistivity of 709 ohm/square, and transmittance of more than 90% were obtained. As a result, $SiO_2$ was coated on PET before deposition of ITO, their chromaticity($b^*$) and transmittance were better than previous results of ITO films. These results show that coating of $SiO_2$ induced arising chromaticity($b^*$) and transmittance. If the thickness of $SiO_2$ is controlled, sheet resistance value of ITO film will be expected to be better for touch screen. A four point probe and spectrophotometer are used to investigate the properties of ITO thin films.

고체산화물 연료전지 스택 열화 방지를 위한 전해질 기술

박미영,배홍열,임형태,Park, Mi Young,Bae, Hongyeul,Lim, Hyung-Tae 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.4

The stability of a solid oxide fuel cell (SOFC) stack is strongly dependent on the magnitude and profile of the internal chemical potential of the solid electrolyte. If the internal partial pressure is too high, the electrolyte can be delaminated from the electrodes. The formation of high internal pressure is attributed to a negative cell voltage, and this phenomenon can occur in a bad cell (with higher resistance) in a stack. This fact implies that the internal chemical potential plays an important role in determining the lifetime of a stack. In the present work, we fabricate planar type anode-supported cells ($25cm^2$) with a bi-layer electrolyte (with locally increased electronic conduction at the anode side) to prevent high internal pressure, and we test the fabricated cells under a negative voltage condition. The results indicate that the addition of electronic conduction in the electrolyte can effectively depress internal pressure and improve the cell stability.

학교급식 영양(교)사의 경험에 따른 로컬푸드 이용에 대한 인식 및 발전방향에 관한 질적 연구

박미영,김순경,Park, Mi-Young,Kim, Soon-Kyung 한국식품영양학회 2015 韓國食品營養學會誌 Vol.28 No.4

In the present study, we conducted in-depth interviews with school dieticians and nutrition teachers to determine the local foods they were aware of and their experiences with local foods. We also aimed to obtain more detailed measures for local food vitalization and suggestions for improvements. In-depth interviews were performed with 8 school dieticians and nutrition teachers, who stated that local food vitalization was needed for school food services, because it could be a foundation for securing safefood products, student healthi mprovements, environmental protection, and the establishment of a general consumption market. However, they were aware of a higher number of disadvantages than advantages in school situations and indicated the deterioration of the quality of food products as the biggest disadvantage. The most-suggested measurement items for local food vitalization in schools included improvement of the food distribution system, expansion of education, information sharing, prevention of monopolies, improvement of food-product quality, and mass production. In addition, it was suggested that school dieticians and nutrition teachers should invest efforts in the development of excellent recipes and varied diets utilizing local foods. Therefore, system supplementation is urgently required in order for school food service officials, and consumers, to efficiently introduce and vitalize local foods. It is also necessary to foster an environment that encourages trust-based relationships with producers to maximize the effect of system supplementation. This would be the foundation for improving the health of students, improving food-service quality, nutrition management, and vitalization of the regional economy in the future, and will positively affect students' food consumption patterns even after they become adults.

이미지 퍼지화 기반 Canny 에지 검출기 설계에 관한 연구

박미영,김철원,박종훈,Park, Mi-Young,Kim, Chul-Won,Park, Jong-Hoon 한국정보통신학회 2011 한국정보통신학회논문지 Vol.15 No.9

본 논문에서는 Canny 에지 검출 알고리즘의 핵심이라 할 수 있는 언어적인 애매한 개념인 "좋은 검출"과 "좋은 지역화" 문제를 퍼지 추론 방식을 통해 처리하는 접근방식을 제안하고, 그레이 스케일 이미지에 관해 퍼지 규칙 기반의 Canny 에지 검출기를 설계한다. 설계의 핵심은 화소들의 그레이 레벨들을 몇 가지의 언어적인 변수들로 분할한 다음에 퍼지 추론 규칙에 따라 편미분 계수들을 근사시키는데 있다. 이러한 접근방식은 기울기 및 기울기 변화에 따른 퍼지 제어 기법과 유사한 측면을 가진다. 이러한 작업을 바탕으로 퍼지 규칙 기반 Canny 에지 검출기를 구현하고, 결과들을 기존 방법과 비교한다. 특히, 제안된 접근 방식은 좁은 동적 범위의 그레이 레벨 이미지의 에지 검출 및 선명화에 있어서 장점을 가진다. This paper suggests an approach to the subtle concept, "good", through the fuzzy logic and the design of the Canny edge detector of Gray scale images based on the rules of fuzzy anisotropic diffusion. The Canny edge detection algorithms design is to divide the gray levels into pixels and then calculate the diffusion coefficients at each pixel of non-edgy regions. Based on this processing, we present the Canny edge detector implementing fuzzy logic and comparing the results to other existing methods. The proposed approach is the narrow dynamic range of the gray-level image Sharpening the edge detection and has the advantage.

Rutheniumhydridonitrosyl 착물을 이용한 불포화 유기화합물의 수소화 반응

박미영,김영중,조욱재,이익모,Park, Mi Young,Kim, Young Joong,Cho, Ook Jae,Lee, Ik Mo 대한화학회 1996 대한화학회지 Vol.40 No.6

Hydridonitrosyl complex의 촉매 활용 가능성과 반응 mechanism을 조사하기 위하여 $RuH(NO)(PPh_3)_3$와 RuH(NO)(etp)에 의한 ketone과 aldehyde의 수소화 반응을 연구하였다. 이 촉매들은 ketone과 aldehyde의 수소화 반응에 대하여 촉매 활성을 보이고 있으며, 활성은 기질의 입체장애 및 전자적 요인에 의존하고 있다. 즉, 입체 장애가 적을수록 촉매의 활성이 증가하며, 전자적 요인의 효과는 ketone의 경우 carbonyl carbon의 부분양전하의 양이 증가할수록, aldehyde의 경우는 carbonyl group의 double bond character가 강할수록 반응성이 증대되는 방향으로 나타나고 있다. 이러한 결과는 ketone과 aldehyde의 반응 mechanism이 다름을 반영하고 있다. 한편, RuH(NO)(etp)와 과잉의 $PPh_3$ 존재하에서 $RuH(NO)(PPh_3)_3$가 촉매 활성을 보이고 있음은 NO ligand의 결합방식의 변화를 통한 반응경로가 존재함을 확인하고 있다. 과잉의 $PPh_3$는 촉매와의 몰비가 변함에 따라 작용의 변화(ligand의 해리 방지 ${\rightarrow}$ 염기 ${\rightarrow}$ ligand)가 나타나며 촉매 활성에 영향을 미치고 있다. 이러한 결과를 이해하기 위하여 각 촉매에 대한 반응 mechanism을 제시하였다. 한편, 동일한 기질에 있어서 RuH(NO)(etp)의 활성은 항상 $RuH(NO)(PPh_3)_3$에 비하여 낮았으며 이는 주로 착물의 구조차이에 기인한 것으로 해석되며, 경쟁반응에 있어서는 olefin의 수소화 반응이 carbonyl group의 수소화 반응보다 선택적으로 진행되고 있다. Catalytic hydrogenation of ketones and aldehydes by RuH(NO)$L_3$ ($L_3$: $PPh_3$, PhP($CH_2CH_2PPh_2$)$_2$(etp)) was investigated to examine the reaction mechanism and the competence of hydridonitrosyl complexes as catalysts for organic synthesis. RuH(NO)$L_3$ showed catalytic activity for the hydrogenation and the activities of catalysts were dependent on the steric and electronic factors. The less the steric demands of the substrates become, the more activity the catalysts show. For the electronic effect, the more the partial positive charge on the carbonyl carbon atom in ketones becomes and the more the double bond character of carbonyl group in aldehydes becomes, the more active the catalysts are. These results reflect the difference of reaction mechanisms of two substrates, ketones and aldehydes. Catalytic activities of RuH(NO)(etp) and RuH(NO)($PPh_3$)$_3$ in the presence of extra $PPh_3$ toward hydrogenation showed the existence of a reaction pathway accompanied with the change of the bonding modes of NO ligand. The roles of excess $PPh_3$ change with increase of the mole ratio of $PPh_3$ to catalysts; prevention of ligand dissociation from comlexes → bases → ligands. The activity of RuH(NO)(etp) was lower than that of RuH(NO)($PPh_3$)$_3$ toward the hydrogenation of the same substrates mainly due to the structural difference. These catalysts showed the selectivity toward olefin hydrogenation over carbonyl groups in the competitive reaction.

도서관 입장에서의 도서정보에 대한 제언

박미영,Park, Mi-Yeong 한국도서관협회 2007 圖協會報 Vol.48 No.7