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대함유도탄 공격유형에 따른 수상함 방어효과도 분석 연구
김재익,정영란,김현실,김철호,유찬우,Kim, Jae Ick,Jung, Young Ran,Kim, Hyun Sil,Kim, Cheol Ho,Yu, Chan Woo 한국시스템엔지니어링학회 2010 시스템엔지니어링학술지 Vol.6 No.1
Anti-surface missiles have been the most dangerous threat to the surface ships, therefore analyzing the defense effectiveness of surface ships against diverse anti-surface missiles attack strategies is very important to evaluate and anticipate the naval combat ship's abilities in terms of AAW (Anti-Air Warfare). In this paper, we don't study on the defense effectiveness of a ship against a missile, but focus on the defense effectiveness for surface ships against multiple missiles specialized in strategies of anti-surface missiles; ripple fire attack and simultaneous time on target attack (STOT). So, we conduct a variety of monte-carlo simulations with high-fidelity simulators, analyze the measure of defense effectiveness for the key factors of strategies and evaluate the effects and possible interactions of several factors through the analysis of the design of experiment (DOE).
김재익,명예슬,안수연,이영지,조충식,Kim, Jae-Ik,Myeong, Ye-Seul,Ahn, Soo-Yeon,Lee, Yeong-Ji,Cho, Chung-Sik 대한한방내과학회 2014 大韓韓方內科學會誌 Vol.35 No.3
Objectives: Recently, the utility rate of Korean-Medical service has been a 6 percent of the domestic market share in medical service, so there is a lot of effort to increase utility rate of Korean medical service. However, in spite of the importance of image to promotion, there are still few studies about image of Korean medicine. Thus, the purpose of this study was to suggest ways to increase utility rate of Korean medical service by surveying and analysing recognition of image of Korean Medicine. Methods: People aged between 20s and 40s were targets of investigation. We divided respondents into three groups depending on relation approximation with Korean medicine (weak-related group, normal-related group, strong-related group). The questionnaire consisted of questions about images of Korean medicine, conducted through online and personal interviews. Results: In total, 282 members responded to the survey and the results of the analysis were as follows. The more a person was related to Korean medicine, the greater the tendency to experience Korean medical service. The most associated taste about Korean medical institutions was Bitterness, smell was smell of Korean medicine, color was yellow, feeling was warm, sound (instrument) was drum, and treatment pattern was Acupuncture, respectively. The most associated image of acupuncture was painful, and the most associated age of Korean medical doctors was 40s. The most associated general term of Korean medicine was physical constitution, and most associated pathological term was extravasated blood. Conclusions: This study can be very useful for future image marketing of Korean medicine because there have been no other studies about image on Korean medicine before now. But this study has also some limits like area, respondent selection, etc., so a more detailed and comprehensive survey is needed.
압전소자를 이용한 에너지 수확장치의 수학적 모델과 파워 출력 예측
김재익(Jai-Ik Kim),김영식(Yeung-Shik Kim),김인수(In-Soo Kim),김준식(Jun-Sik Kim) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.5
본 연구는 압전소자와 전기회로가 포함된 외팔보 에너지 수확장치의 수학적 모델을 제안한다. 제안된 모델은 오일러 베르누이 보 이론을 기반으로 해밀턴 정리와 진동파형 기법을 이용하여 유도한다. 이 모델을 이용하여 압전소자의 크기에 따른 발전량 변화, 전기회의 인덕터, 양의 콘덴서, 음의 콘덴서에 의한 발전량의 변화와 생성주파수 대역의 변화, 부하에 따른 발전량을 비교한다. 또한 에너지 수확장치의 최대 출력파워를 가지게 하는 인덕터 값과 부하 값이 존재함을 보이고 인덕터 튜닝법과 부하 튜닝법을 통해 에너지 수확장치의 설계방법을 제시한다. The objective of this research is to develop the mathematical model of an energy harvesting system with piezoelectric device and electric circuit. The proposed model, which is based on Euler-Bernoulli beam theory, is derived by employing Hamilton’s principle. The usefulness of the model is discussed by assessing the results obtained in terms of various design parameters, such as the size of piezoelectric patch or layer, electric circuitry with negative capacitance and mechanical load.
김용환 ( Yong Hwan Kim ),박종태 ( Jong Tae Park ),김재익 ( Jae Ik Kim ),김현중 ( Hyun Joong Kim ),김태순 ( Tae Soon Kim ),장미선 ( Mi Sun Jang ),김정남 ( Jeong Nam Kim ),박덕웅 ( Duk Woong Park ),배성열 ( Seong Yeol Bae ),박자윤 ( 한국가축위생학회 2008 韓國家畜衛生學會誌 Vol.31 No.2
This study was carried out to investigate the prevalence of fascioliasis of slaughtered and farmed cattle in Gwangju area from February to November in 2007. A total of 1,000 cattle fecal samples were collected from slaughter houses (n=805) and farms (n=185). Twelve (1.2%) were found as positive cases with excretion of the egg of Fasciola spp in the fecal specimens, and 128 (12.8%) were positive in intestinal parasitism using the flotation and sedimentation procedures. The infection rate of fluke larvae from the slaughtered cattle at abattoirs in Gwangju was 0.75%(6 out of 805 heads). In histopathology, there were several liver lesions such as inflammation with infiltration of eosinophil, polymorphonuclear cells, mononuclear cells and multinucleated giant cells, proliferation of connective tissue, calcification and abscess formation.
김재익(Jae Ik, Kim),박경순(Kyung Soon, Park) 한국장애인재활협회 2018 재활복지 Vol.22 No.1
본 연구는 취업한 뇌성마비인의 직업유지기간에 영향을 미치는 요인들을 실증적인 분석을 통하여 구명하고 이를 바탕으로 뇌성마비근로자가 직업을 지속적으로 유지하기 위한 방안을 모색하는 것이다. 이를 위해 뇌성마비근로자의 일반적인 특성을 파악하고, 인구학적 요인, 장애관련 요인, 취업관련 요인, 사회환경 요인들이 뇌성마비근로자의 직업유지기간에 미치는 영향을 검증하고자 한다. 분석을 위하여 뇌성마비근로자 233명을 대상으로 빈도분석과 기술통계 그리고 t-test와 일원배치 분산분석을 실시하였다. 뇌성마비근로자의 직업유지기간에 영향을 미치는 요인분석 결과를 살펴보면, 직업유지기간에 영향을 미치는 4요인 17개 변수 가운데 15개 변수가 통계적으로 정적으로 유의미한 결과를 나타내었다, 인구학적 요인에서 직업유지기간에 유의미한 영향을 미치는 변수는 연령, 가구소득, 결혼상태, 교육수준으로 나타났다. 장애관련 요인에서는 장애등급, 장애원인, 의사소통능력이었으며, 취업관련 요인에서는 임금, 고용형태, 장애관련기관 및 기업, 직무형태, 직업훈련, 자격증이었고, 사회환경요인에서는 보조공학기기, 근로지원인서비스가 영향요인이었다. The purpose of this study is to identify through empirical analysis about factors affecting the period of job maintenance of workers with cerebral palsy. Based on this, workers with cerebral palsy are looking for ways to maintain their job continuously. For this purpose, this study identifies the general characteristics and verify the affect of demographic factors, disability-related factors, employment-related factors, and social environment factors on the job maintenance period of workers with cerebral palsy. For the analysis, frequency analysis, descriptivel analysis, T-test and One-way Anova was conducted for 233 persons with cerebral palsy. The results of the study, of 17 variables of the four factors affecting the job maintenance period, 15 variables obtained statistically significant results. First, the demographic variables were age, household income, marital status, and education level. Second, the disability-related variables were disability grade, disability cause, and communication ability. Third, the employment-related variables were wage, employment type, disability-related organizations and companies, job type, job training, and qualification. Fourth, the social environment variables were assistive technology devices, and labor support personnel services.