얼굴인식 시스템을 위한 효과적인 인공해마 알고리즘 구현

추정호,강대성 동아대학교 정보기술연구소 2007 情報技術硏究所論文誌 Vol.14 No.2

In this paper, we propose the development of Artificial Hippocampus Algorithm(AHA) which remodels a principle of brain of hippocampus. Hippocampus takes charge auto-associative memory and controlling functions of long-term or short-term memory strengthening. We organize auto-associative memory based 4 steps system (EC, DG, CA3, and CA1) and improve speed of learning by addition of modulator to long-term memory learning. In hippocampus system, according to the 3 steps order, information applies statistical deviation on Dentate Gyrus region and is labeled to responsive pattern by adjustment of a good impression. In CA3 region, pattern is reorganized by auto-associative memory. In CA1 region, convergence of connection weight which is used long-term memory is learned fast a by neural network which is applied modulator. To measure performance of Artificial Hippocampus Algorithm, PCA(Principal Component Analysis) and LDA(Linear Discriminants Analysis) are applied to face images which are classified by pose, expression and picture quality. Next, we calculate feature vectors and learn by AHA. Finally, we confirm cognitive rate. The results of experiments, we can compare a proposed method of other methods, and we can confirm that the proposed method is superior to the existing method.

전국 단위 감시체계의 현황과 전망

강성규,안연순,지영구,김형옥,하미나,권호장,백남종,김성아,홍윤철,김재용,강대희,정혜선,하은희 대한산업의학회 2001 대한직업환경의학회지 Vol.13 No.2

저가 후막 EL소자 제조 및 신뢰성 평가

강계원,김대연,이영훈,강봉석,박정현,최병호 금오공과대학교 산업기술개발연구원 2000 産業技術開發硏究 Vol.16 No.-

AC powder electroluminescence(EL) device consists of seven layers : PET substrate, transparent electrode, phosphor layer, dielectric layer, two layer metal electrodes and protective layer. Etch layer needs to control to improve electrical and optical properties. Both phosphor and dielectric layer among them is more important to increase its properties. For long-time reliability, proper choices of passivation and sealing material are essential. In this paper, influence of phosphor and dielectric layer thickness on EL performance is studied. Type of cellulos is selected as a sealing material to avoid moisture. To add two type of plasticizer to resin improves flexibility and passivation of EL devices. Through this experiments, technologies of fabrication low-cost thick film EL device can be established.

LiNbO₃기판을 사용한 광 도파로의 설계 및 분석

강기성,채기병,소대화,박정철 明知大學校 産業技術硏究所 1991 産業技術硏究所論文集 Vol.10 No.-

In this paper, we calculate refractive index change of optical waveguide and electric field to simulate y-cut LiNbO₃optical waveguide at He-Ne laser (λ=0.6328[㎛]) by BPM mechanism. At waveguide width of 4[㎛], buffer layer of 0.02[㎛] of LiNbO₃ substrate (XI 55[㎛] x ZI 5000[㎛], we observed electric field Ex, Ey in x, y-direction. By applying these parameters of single waveguide to simulate a X-switch, we have chosen index change of 0.002, width of 3[㎛] and angle of 0.4。∼0.6°of optical waveguide and under these conditions, optical beam propagates cross-side at 0.4° When applied switching vlotage of 25[V], optical beam of X-switch turns cross-side to bar-side at intersection angle 0.4° index change of 0.002, wavegulde width of 3[㎛], electrode gap 2[㎛]. By the above results, we can obtain the basis design conditions of X-switch optical modulator. And optical single waveguide is fabricated on the y-cut LiNbO₃ single crystal substrate by Ti-indiffusion method. The line-width of the waveguide was made from 4[㎛] to 6[㎛]that observed single mode at 4[㎛] as a result of propagation of He-Ne(0.6328[㎛]) laser beam.

學習障碍兒의 出現率과 行動特性

丁大榮,姜渭榮 大邱大學校再活科學硏究所 1986 再活科學硏究 Vol.7 No.1

The purposes of the present study were to estimate the prevalence of learning disabilities in the elementary school children and to identify the behavioral characteristics of learning disabled children. The standardized school achievement tests for Korean and arithmetic, intelligence test and the Myklebust's pupil Rating Scale(1981) were used as instruments. In the study, the students with general IQ above 80 but obtained Z-scores lower than-2were regarded as learning disabled children. It was found in the study that the prevalence of learning disab1ed children among 2662(boys 1397, girls 1265) in grade 3 from 18 elementary schools located in various areas in Taegu city and Kyung Sang Buk Do was 102(boys 55, girls 47), 3.83%. The Comparison of behavioral characteristics reflected on the Mykhebust's scale between learning disabled and non-disabled students were significantly different on the all of the 24 subscales of the measurement. The most significant differences were found on the orientation and spoken language subscales. Thus, learnieg disabled children were characterized by their poor abilities in finding places, conceptual judgement, time concept and expression in spoken language.

8년간(1992~1999) 산업안전보건연구원에 의뢰된 직업병 심의 사례 분석

강성규,김규상,김양호,최정근,안연순,진영우,최병순,양정선,김은아,채창호,최용휴,김대성,박정선,정호근 대한산업의학회 2000 대한직업환경의학회지 Vol.12 No.2

Objectives : Pneumoconisis and noise-induced hearing loss (NIHL) have been reported as main occupational diseases by the Special Health Examination. The Industrial Accident Compensation Insurance has reported various work-related diseases, however, these two diseases occupied almost a half of compensated cases. Therefore, it was not well known about the status of occupational diseases other than pneumoconiosis, NIHL, and cardio-cerebrovascular accident (CVA). This study was conducted to analyze claimed cases as an occupational disease, that was requested to the Korea Industrial Safety and Health Agency (KOSHA). Methods : The local office of the Korea Labor Welfare Corporation (KLWC) has asked the KOSHA for confirmation of claimed cases as an occupational disease. We analyzed 379 cases requested from KLWC, the Ministry of Labor, employers, unions and occupational health agencies from 1992 to 1999. Results : Male was 80.7 % of the requested cases. Their mean age was 42 years old and 75.5 % of them were more than 35 years old. The requested cases were increased rapidly from 25 cases in 1992 to 108 cases in 1999 and the accept rate was 50.7 %. The majority of requested cases were respiratory diseases(22.4%), cancers(18.5%), Neuropsychiatric problems(14.5%), and musculoskeletal problems(13.5%). The accept rate was high in reproductive, respiratory, musculoskeletal and digestive disorders and low in neuropsychiatric, renal and otologic problems and occupational cancers. 73.6% of them were caused by chemical agents, especially 28.5 % were by organic solvents. 67% of them were clinically confirmed at university hospitals. A half of the cases were from KyongIn area, even the request came from the whole country. Conclusions : A claim was common in workers whose age was over 35 years old and exposure history was over 10 years. The respiratory diseases and neuropsychiatric disorders were still main problems in occupational health and occupational cancers was increasing even though its accept rate was not high yet.

管理의 管僚化와 經營者

姜正大 全北大學校 1966 論文集 Vol.7 No.-

長期雇傭制의 經營效果와 그 展望

姜正大 全北大學校 商科大學 附設 産業開發硏究所 1972 상과대학論文集 Vol.2 No.-

DEA모형을 이용한 유망 정보통신산업 선정에 관한 연구

강회일,정대영,윤문길 한국항공대학교 경영연구소 2000 경영연구 Vol.7 No.1

이 논문은 정부에서 중점 육성하고자 하는 30대 정보통신핵심분야에 대한 기술 및 시장전망을 토대로 기술개발 핵심분야와 경쟁력 확보분야로 나누어서 유망 수출품목을 선정하고, 각 품목에 대한 유망시장 탐색 및 진출전략을 살펴보려는 것을 주요 내용으로 삼는다. The confluence of information and telecommunications technologies is creating explosive changes in the various of industries. Since some major industries in information and telecommunication areas have boosted up the national economic growth, it is needed to identify such industries being supported for improving competitiveness. In this paper, we consider an evaluation model to identify some major industries in information and telecommunication areas by using DEA. Applying the model, we can obtain the relative efficiency, we can select several major industries among alternative ones for improving their competitiveness by some effective strategies. Recent advances in information technologies have paved the way for an explosive growth in the area of information and telecommunication industries. Since some major industries in information and telecommunication areas have boosted up the national economic growth, it is needed to identify such industries being supported for improving competitiveness. In this paper, we consider an evaluation model to identify some major industries in information and telecommunication areas by using DEA. Applying the model, we can obtain the relative efficiency of each one among alternative from the relative efficiency, we can select several major industries among alternative ones for improving their competitiveness by some effective strategies.

징거미새우, Macrobrachium nipponense의 Androgenic Gland 미세구조

한창희,김대중,강정하,김대현 동의대학교 기초과학연구소 2000 基礎科學硏究論文集 Vol.10 No.1

The androgenic gland secretes a hormone, androgenic gland hormone, which is believed to act the differentiation of the primary, secondary, and behavioral sex characteristics in most malacostracan crustaceans. This report presents the ultrastructural morphology of the androgenic gland in the freshwater prawn Macrobrachium nipponense. This gland, located in the coxopodite of the last pair of walking legs, was attached to the subterminal region of the sperm duct. The gland was composed of simple cellular strands, encased by a fibrous sheath. Microvilli were situated in the fibrous sheath, especially at the edge of each cellular strand. The androgenic gland cells had the large and round nucleus and rough endoplasmic arranged either in spirals or in concentric circles throughout the cytoplasm of the cell. They also had the well-developed Golgi complex and long mitochondria with flat and transverse cristae. The Golgi complex was similar to microvesicular cluster, but usually in the shape of typical dictyosomes. These features of androgenic gland cells coincides well with the protein/peptide secretion in their function. However, despite the apparent ultrastructural equipment for protein/peptide secretion, no accumulation of materials secreted were noticed in the cytoplasm. Therefore it is strongly suggested that the transportation of the materials into the hemocoel has occurred just after synthesis.