Analytical studies of Jacobson’s necessary condition for fed-batch singular control optimization

신화성 한국화학공학회 2011 Korean Journal of Chemical Engineering Vol.28 No.3

Jacobson’s necessary condition for optimality guarantees non-negativity of singular second variation, independently of generalized Legendre-Clebsch condition. Fed-batch is a typical singular bioprocess system. However, no reports exist of using Jacobson’s necessary condition in fed-batch optimization problem. This paper suggests its applicability to fed-batch optimization problem by showing its analytical studies for two typical examples: cell mass and metabolite maximization problem.

Cell-chip 기반의 미생물 연구

신화성,Sin, Hwa-Seong 한국미생물학회 2009 微生物과 産業 Vol.35 No.3

식품산업의 효과적인 RFID 시스템 도입 방안에 관한 실증 연구

신화성,한경석 한국디지털정책학회 2008 디지털융복합연구 Vol.6 No.3

식품산업의 E2E 프로세스상에서 RFID 시스템 적용방안에 관한 실증 연구 - BMT(Bench Mark Test)를 통한 태그 부착 방안을 중심으로

신화성,민천홍 한국디지털정책학회 2009 디지털융복합연구 Vol.7 No.4

公共機關의 EA(Enterprise Architecture) 컨설팅 서비스 活用度와 滿足度에 影響을 주는 主要要因에 關限 實證硏究

신화성(Hwa-Sung Shin),한경석(Kyeong-Seok Han) 숭실대학교 사회과학연구소 2008 사회과학논총 Vol.10 No.-

공공기관에 대한 EA(Enterprise Architecture)컨설팅 서비스 활용도 및 만족도에 영향을 주는 요인에 관한 최근까지의 연구는 EA 컨설팅 서비스 품질 특성을 고려한 항목에 대한 고려가 부족하여 컨설팅 관련 연구로서는 제약점 있었으며 이에 관한 실증 연구는 거의 찾아보기 어려운 현실이다. 본 논문에서는 EA 컨설팅 서비스 품질 특성을 고려한 “공공기관의 EA 컨설팅 서비스 활용도와 만족도에 영향을 주는 주요요인“를 분석함으로써”요인과 EA의 컨설팅 활용도와 만족도“에 대해 통계적 방법으로 상관관계를 분석ㆍ입증한다. EA 컨설팅 활용도와 만족도에 관련되는 요인을 도출을 위해 SERVQUAL으로부터 6항목과 EA 컨설팅 특성을 반영한 2항목( EA 방법론 준용성, EA 추진 몰입성)을 적용한다. EA를 경험한 공공기관을 조사대상으로 독립변수 16, 종속변수 4, 일반항목변수 8, 총 28문항에 대한 n=72의 설문조사 데이터를 분석하였다. 종속변수는 EA 활용도와 EA 만족도이고, 독립변수는 신뢰성, 반응성, 확신성, 공감성, 참여유도, 의사소통, EA 방법론 준용성, EA 추진 몰입성 이다. 요인분석에 의해 3개 요인을 추출하고 이를 독립변수로 하는 회귀분석에 의해 연구가설을 검증하였다. 검증결과 EA 컨설팅 서비스 품질 중 EA자원투입지도를 제외한 2요인 모두 컨설팅 만족도에 영향을 미치며 EA 활용도에 대해서는 EA 컨설팅 서비스 품질 모두 유의적인 영향을 미친다. This paper presents an analysis on the method of how the EA(Enterprise Architecture) consulting service's critical factors affect on the customer satisfaction in terms of 8 EA consulting quality(ECQ) factors : reliability, responsiveness, confidence, sympathy, incitement of participation, communication, application of EA methodology and immersion of EA project. To measure the ECQ, eight factors were selected to measure the ECQ. The eight factors include six SERVQUAL's factors and two EA specific factors. Most of the factors are measured by using Likert-type five point scale. A sample of 72 participants of Public Institutions who were involved in EA project was collected and the data was analyzed by the SPSSWIN 13.0 version. Although EA participants were involved in EA projects, they didn't how high scores for EA's application degree and customer's satisfaction. The factor analysis shows that there are three significant factors. The results show that 3 factors are not only very important in explaining the EA's application degree but also partially important for EA's customer's satisfaction.

장애와 공동체에 대한 연구동향 분석

신화성 ( Hwa Sung Shin ) 대구대학교 특수교육문제연구소 2015 한국특수교육문제연구소 학술대회발표자료집 Vol.2015 No.1

본 연구에서는 장애와 공동체를 대상으로 하여, 2000년부터 2014년 12월까지 장애와 공동체를 대상으로 학술연구정보서비스(RISS)에서 ‘장애’ + ‘공동체’를 키워드로 하여 국내학술지에 수록된 문헌을 탐색하고, 장애와 공동체에 대한 연구동향을 분석하는데 그 목적을 두었다. 검색결과 총 4개의 학회지, 6편의 논문이 최종 선정이 되었으며, 1) 연구자(발표연도) 2) 기본정보(제목, 게재지) 3)연구유형 4)연구대상 5) 연구방법 6)연구주제를 범주로 하여 분석하였다. 분석 결과 첫 번째 연구유형으로는 실험연구2편, 조사연구1편, 질적연구 2편, 문헌과 질적 연구를 함께한 논문 1편이었으며, 두 번째 연구대상으로 비장애학생 2편, 장애유아 1편, 성인장애인 부모 및 종사자 1편, 성인장애인 1편, 기관 1편이었다. 세 번째 연구방법으로 통제집단 사전사후 설계, 참여관찰, 문화기술지, 심층면담을 사용하였으며, 조사연구는 설문지를 사용하였다. 주제로는 비장애학생의 장애학생에 대한 태도, 비장애학생의 장애학생에 대한 이해, 장애 공동체의 일상, 자립생활로 나눌 수가 있었다. 국내에서 장애 공동체와 관련한 연구는 절대적으로 부족한 실정이며, 이와 관련된 연구가 필요하며, 단순히 장애 공동체를 연구대상으로 접근을 하는 것이 아닌 그들의 일상을 통해 장단점을 파악하고 이를 보완하는 연구가 필요하다. This research aimed at investigating the literature included in domesticacademic journal with the key words of ``disability`` + ``community`` from the Academic Research Information Service(RISS), based on disability and community from 2000 to December 2014, targeting disability and community, and analyzing the research trend on disability and community. As the result of search, total 4 academic journals and 6 papers were finally selected, and this research analyzed by categorizing according to 1) researcher (presentation year) 2) basic information (title, publication agent) 3) research type 4) research object 5) research method 6) research subject. As the analysis result, first, the types of research were 2 experimental researches, 1 research study, 2 qualitative researches, and 1 paper which was conducted along with literatureresearch and qualitative research, second, researches on research objects were 2 of non-handicapped students, 1 of disabled children, 1 of disabled parents and employees, 1 of adult disabled people, and 1 of institute. Third, as the research method, this research utilized pre-to-post control group design, participant observation, cultural descriptive research, and in-depth interview, also, utilized questionnaires for investigation research. The subject could be divided into non-handicapped students`` attitude toward disabled students, non-handicapped students`` understanding about disabled students, daily life of disabled people``s community, and independent living. In Korea, researches related to disabled people``s community are definitely insufficient, therefore, researches on this are necessary, also, the researches to comprehend the merits and demerits through their daily life and complement these points, not just approaching the community merely as the research object.

Mathematical analysis of colonial formation of embryonic stem cells in microfluidic system

민슬기,신화성,Byung Man Lee,Jin Ha Hwang,하성호 한국화학공학회 2012 Korean Journal of Chemical Engineering Vol.29 No.3

A fluidic environment affects mechanochemical characteristics of embryonic stem cells (ESCs). Perfusion is recognized as an attractive culture mode of ESCs since the steady fluidic state can enhance ESCs’ controllability,supporting a unique cell culture condition. Cellular membrane motility presents important information about cellular dynamics such as adhesion, spreading, and migration. Thus, an investigation of the perfusion-induced membrane motility is significant to understand the mechanochemical behavior of ESCs in the steady culture state. In this research,we suggest Lfr, the ratio of circumferential membrane unattached to other cells’ to the cell’s circumference, as a new parameter to characterize cells’ shape and motility. Lfr of embryonic stem cells has positive correlations with cellular area (Ar) and free peripheral length (Lf) but a negative correlation with roundness (Rn). We also propose a mathematical model representing ESCs’ membrane motilities and demonstrate their colonical behavior.

웹기반 IT 자산관리 시스템의 구축

김재생,신화성 한국디지털정책학회 2012 디지털융복합연구 Vol.10 No.8

Analysis and Prediction of Surface Condition of Artificial Skin Based on CNN and ConvLSTM

전상윤,신화성 한국생물공학회 2021 Biotechnology and Bioprocess Engineering Vol.26 No.3

Recently, with greater focus on ethical issues related to animal testing, interest in artificial skin platforms has increased in both cosmetic and medical industries. Artificial skin comprises dermal and epidermal layers. In particular, proper differentiation and proliferation of keratinocytes in the epidermal layer has a considerable influence on the role of the skin as a barrier. However, during 3D culture, real-time monitoring and evaluation of the tissue being cultured are difficult. In this study, Convolutional Neural Network and Convolutional Long Short-Term Memory were utilized for prediction of the artificial skin image. To evaluate the designed models, the similarity between the predicted artificial skin image was compared with the real image. We verified the possibility and practicability of artificial skin image analysis and prediction using neural network models. In the future, this approach could be applied to image prediction under certain conditions, such as inflammatory or skin diseases.

Oxygen plasma-treated polycaprolactone (PCL) nanofiber for astrocyte cell culture

김성훈,민슬기,신화성 한국고분자학회 2011 한국고분자학회 학술대회 연구논문 초록집 Vol.2011 No.2