• The Korean Journal of Zoology
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• v.32 no.3
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• pp.264-274
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• 1989

In order to study the influence of spermatozoa and testicular fluid on the component and composition of proteins in epididymal fluid of mice, histological differentiation of testis and epididymis were observed during sexual maturation, and the proteins in epididymal fluids collected according to the characteristics of lumination were analyzed by electrophoresis (SDS-PAGE). In 10 day-old mouse, both of,testis and epididymis were undifferentiated. In 20 day-old mouse, epididymis was primitively luminated, but testis was not. In 35 day-old mouse, both of testis and epididymis were luminated and eaithdymal epithelium was differentiated into principal cells and clear cells. Spermatozoa were not transfered into epididymis yet. However, in 80 day-old mouse, both of festis and epididymis were fully differentiated and spermatozoa were transfered into epididymis. In electrophoretic paftem of proteins in epididymal fluid, a total of 28 kinds of proteins were identified, which were different from those of their sera. 12 kinds out of these proteins were epididymal specific protein(ESP) detected in epididymal fluid only, and the other 16 kinds(TEP) were also detected in testicular fluid. The proteins in epididymal fluid changed during sexual maturation and 3 kinds of the proteins changed quantitatively according to epididymal regions in adult. It may be concluded from the above results that the component and composition of the proteins in epididymal fluid changed by the influx of testicular fluid including spermatozoa into epididymis and regulation of the protein synthesis, secretion and/or absorption by the epididymal epithelium. Therefore it is strongly suggested that ESP and TEP in epididymal fluid play somehow significant roles on the maturation of epididymal spermatozoa.

• Journal of the Korean Institute of Telematics and Electronics T
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• v.36T no.3
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• pp.26-31
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• 1999

In this paper, we propose a facial characteristic detection algorithm based on knowledge and object segmentation method for image communication. In this algorithm, under the condition of the same lumination and distance from the fixed video camera to human face, we capture input images of 256 $\times$ 256 of gray scale 256 level and then remove the noise using the Gaussian filter. Two images are captured with a video camera, One contains the human face; the other contains only background region without including a face. And then we get a differential image between two images. After removing noise of the differential image by eroding End dilating, divide background image into a facial image. We separate eyes, ears, a nose and a mouth after searching the edge component in the facial image. From simulation results, we have verified the efficiency of the Proposed algorithm.

• Korean Institute of Interior Design Journal
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• v.17 no.1
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• pp.110-119
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• 2008

A lobby of a hotel is an important space by which the image of a hotel as a whole, the brand-identity, is determined. This study has researched and analyzed the special property in presentation of a landmark in a hotel lobby for its spatial factors, which affects visual cognition, and it is to provide information that can set out the foundation of space design for the appropriate landmark in a certain hotel lobby corresponding to the unique characteristics of a hotel. The regional range of this study includes the lobby spaces of 10 five-star hotels in Shanghai China and Seoul Korea. The types of spatial factors as landmarks and manifestation of those, which affect the visual cognition of the users are the range of context in this study. For this study, field-study and survey were both used in research. The results that have been concluded through this study are as follow. First, manifestational quality of a landmark in a hotel lobby is represented in its size, figure and contrast of 'shape', in its visibility and territory of 'space' and in its symbolic value and historical property of 'meaning', and each of those factors are related to the others. Secondly, the types of spatial factors in a landmark are displayed as being focused on the openness of the space or with large-scaled spatial factors. Light and lumination intensify the manifestation of various spatial factors in a landmark. Thirdly, each representational characteristic of spatial factors in a landmark, which are closely linked to each other should be controlled precisely in order to bring out functional and symbolic feature of a hotel lobby.

• Journal of the Institute of Electronics Engineers of Korea TE
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• v.37 no.3
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• pp.72-78
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• 2000

In this study, we propose a model verification algorithm based on DCT and neural network for ATM security system. We construct database about facial images after capturing thirty persons facial images in the same lumination and distance. To simulate model verification, we capture four learning images and test images per a man. After detecting edge in facial images, we detect a characteristic area of square shape using edge distribution in facial images. Characteristic area contains eye bows, eyes, nose, mouth and cheek. We extract characteristic vectors to calculate diagonally coefficients sum after obtaining DCT coefficients about characteristic area. Characteristic vectors is normalized between +1 and -1, and then used for input vectors of neural networks. Not considering passwords, simulations results showed 100% verification rate when facial images were learned and 92% verification rate when facial images weren't learned. But considering passwords, the proposed algorithm showed 100% verification rate in case of two simulations.

• Archives of Reconstructive Microsurgery
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• v.17 no.2
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• pp.120-125
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• 2008

Purpose: Heat therapy by heat lamp after microvascular surgery is being used for preventing blood vessels's contraction and blood-flow's disturbance. As usually, incandescent lamp has been used. But there have been several problems and need for improvement in the existing heat lamp treatment. So we would like to introduce improved heat lamp to keep an appropriate temperature and intensity of illumination. Methods: The existing heat lamps are the ones of general light stands covered with newspaper, having 60 watt light bulb of incandescence and lampshade made of aluminum. We have tried to improve shortcomings of the existing heat lamps by enlarging the size of aluminum lampshade and attaching a curtain that can block heat and light. We conducted a comparative study between the existing and improved heat lamps. Under the assumption that there are several affected parts, we have also measured the distance from heat lamp to patients' eye region and then intensity of illumination. Result: The target temperature of surface was realized in 11 minutes with the maximum temperature reaching at 36.6 degrees C in 28 minutes at the existing heat lamp while the target temperature reached in 7 minutes with the maximum temperature reaching at 39.0 degrees C in 17 minutes at the improved heat lamp. The existing and improved heat lamp showed 38 lx and 0.1 lx of intensity of lumination, respectively. Conclusion: Using improved heat lamps, we can keep an appropriate temperature and we think we can make contribution to patients' treatment by making them and their neighbors able to sleep with minimized disturbance thanks to low intensity of illumination secured by blocking light.

• The Korean Journal of Zoology
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• v.33 no.1
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• pp.78-93
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• 1990

The ultrastructure of epididymal epithelium of 10, 20, 35 and 80 day-old mouse was observed to study the differentiation and function of the epithelial cells in connection with the absorption and secretion during sexual matruation. The differentiation of epididymis was divided into three phases of, 1) undiflerentiated phase until the day 20 after birth, 2) growing and differentiating phase between the day 20 and 35, and 3) maturating phase up to the adult. Each phase was closely related with the lumination of seminiferous tubule and the influx of spermatozoa within testicular fluid from testis. In adult, the ultrastructural features appeared an absorptive function in the principal cells of proximal caput epididymis, and a strong activity of protein synthesis and secretion in distal caput, corpus and cauda epididymis. Clear cells were predominantly located in corpus and cauda epidiymis, and plenty of absorption vesicles including membranous particles assumed to be the cellular residues from spermatozoa were observed at apical region. Therefore, the distribution of various cell types of epithelium and the ultrastructure even in the same type of epithelial cell, were different according to the epididymal regions.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.1
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• pp.45-50
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• 2013

The reflector of infrared lamp is designed to the optimal circular shape through the analyses of lumination distributions with a triangular, rectangular and circular configurations of infrared lamps respectively by using Photopia. PLC is used to compare and amplify the difference between soldering temperature profile and feedback value. It is fed to IR lamp controller which adjusts the soldering temperature of PV cell. The soldering temperature measured using an infrared temperature sensor is then fed back to the PLC. The closed control loop of soldering temperature on a PV cell is implemented. The noncontact soldering device of PV cells using infrared lamp which is easily operated by HMI operation panel and controlled robustly by PLC and IR lamp controller is developed.