• Journal of the Korean Institute of Telematics and Electronics D
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• v.36D no.11
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• pp.1-11
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• 1999

In this paper, the effects of superstrate on the radiation patterns of dipole on cylindrical bianisotropic substrates were studied. Special constitutive relations are used to describe the bianisotropic properties of a material, such that the Green's function can be formulated. Electromagnetic fields and boundary conditions in spectral region were used to find Green's function of the spectral representation and electromagnetic fields in space region were derived through inverse Fourier transformations of fields in spectral region using asymptotic formula for far zone. Radiation characteristics of axial Hertzian dipole on superstrate loaded cylindrical bianisotropic substrates were obtained. The effects of bianisotropic superstrate on the radiation properties of the antennas including beam scanning, directivity enhancement, dark-region illumination, and on horizon radiation, are discussed.

• Journal of the Korean Society for Nondestructive Testing
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• v.27 no.1
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• pp.15-22
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• 2007

A hybrid experimental-numerical method is presented for determining the stresses around a circular hole in a finite-width, tensile loaded plate. Measured fringe orders along straight lines provided the input information on the external boundary of the hybrid element. In order to see the effects of varying stress field, different numbers of terms in a power-series representation of the complex type conformal mapping stress function were tested. For qualitative comparison, actual isochromatic fringes were compared with reconstructed theoretical fringes using stress-optic law. For quantitative comparison, relative errors and standard deviations with respective to relative errors were analyzed for all measured points by changing the number of terms of stress function. The hybrid results are highly comparable with those predicted by FEA. The results show that this approach is effective and promising because isochromatic data along the straight lines in photoelasticity can be conveniently measured by use of phase shifting photoelasticity.

• Journal of the Korean Institute of Telematics and Electronics S
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• v.35S no.6
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• pp.101-108
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• 1998

An efficient approach to recognize occluded objects is to detect a number of essential features on the boundary of the unknown shape. The salient points including corner points, tangential points and inflection points are detected by the relation of neighboring pixels of each pixel on the boundaries. Corner points are usually detected in the curvature function and tangential points and inflection points are detected by median filtering the curvature function to avoid the effect of quantization noise as corner points is not sufficient to represent an object with lines and arcs. Then, these salient points are used as features for object matching. Discrete Hopfield Neural Network is used for object matching. Experimental results show that the matching result using salient points is better than those of using corner points only when an object consists of lines and arcs.

• Journal of Digital Contents Society
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• v.6 no.2
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• pp.107-112
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• 2005

We need a research for representing and processing of multimedia data in database because of increasing the importance and utilization of the data owing to development of internet technology. RDBMS supports only the storing-structure to store multimedia, but the support for data type, representation and query of multimedia is insufficient. To cope with this problem, ISO/IEC standardized SQL multimedia(SQL/MM) for multimedia data. However, ORDBMS supports SQL/MM, but RDBMS does not support it. Therfore, this theis proposes a query interpreter to support SQL/MM in MS-SQL 2000 as one of RDBMS and introduces a image retrieval application using it. The quary interpreter supports the function to convert SQL/MM into SQL, and additionally the function of the image duplication check. The image processing application using a query interpreter can easily be integrated and operated with traditional RDBMS-based system.

• Journal of the Korean Institute of Landscape Architecture
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• v.20 no.3
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• pp.21-32
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• 1992

This paper is studied on the concept of environmental cognition on accordance with the oriental(especially Buddhism) process of thinking. The Yeongiron(theroy : one of th most famous philosophy of Buddhism, the theory of cause and occasion) consists of the upgam-yeongi, the aroeyasik-yeongi, the chinyeo-yeongi and the pupkye-yeongi. And the concept of these theory are as follows: The conceptural elements of upgam-yeongi consist of sack(色), soo(受), sand(想), hand(行), sik(識). The elements connects with the western environmental psychology such as sack and objects, soo and stimuli, sand and perception, hand and cognition, sik and behavior. Similarly, aroeyasik-yeongi that consist of sangbun(相分), kyunbun(見分), chajungbun(自證分), chungjajungbun(證自證分) connects with objects, perception, cognition, behavior too. The chinyeo-yeongi divide into smase(三細) and yukchu(육추), the samse consist of mumyungupsang(無 明業相), nungyunsand(能見相), kyungyesand(境界相) and the yukchu consist of chisang(智相), sangsoksang(相續相), chipchisang(執取相), kyemyungjasang(計明字相), kiupsang(起業相), upgyegosang(業繫苦相). These elements are relates with the concept of western environmental psychology from objects to behavior too. Pupkye-yeongi represent a characteristic of objects itself rather than a process of environmental cognition. However this study has limitations that the religion and scientific methods should be compare. sack(色) : an elements of it's derivation, all kinds of material soo(受) : a function of reception, feeling sang(想) : a representation of a thought in the mind hang(行) : mental operation sik(識) : a function of judgement sangbun(相分) : the thing in itself kyunbun(見分) : a reflection in the mind chajungbun(自證分) : confirmation of kyunbun chungjajungbyn(證自證分) : self-consciousness through self-examination mumyungupsang(無明業相) : a state of mixture with the object and the subject nungyunsang(能見相) : an operation of the subject kyungyesang(境界相) : a formation of object chisang(智相) : the beginning of distinction sangsoksang(相續相) : a judgement chipchisang(執取相) : a rsponse kiupsang(起業相) : have a influence to the next behavior upgyegosang(業界苦相) : retribution

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.7
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• pp.1749-1756
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• 2014

Knowledge about protein subcellular localization provides important information about protein function. This paper improves a label power-set multi-label classification for the accurate prediction of subcellular localization of proteins which simultaneously exist at multiple subcellular locations. Among multi-label classification methods, label power-set method can effectively model the correlation between subcellular locations of proteins performing certain biological function. With constrained optimization, this paper calculates combination weights which are used in the linear combination representation of a multi-label by other multi-labels. Using these weights, the prediction probabilities of multi-labels are combined to give final prediction results. Experimental results on human protein dataset show that the proposed method achieves higher performance than other prediction methods for protein subcellular localization. This shows that the proposed method can successfully enrich the prediction probability of multi-labels by exploiting the overlapping information between multi-labels.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.18 no.4
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• pp.549-560
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• 1993

A simple closed form approximation is developed by a new approach presented in this paper for the microstrip surface dyadic Green's function which arises in the problem of an electric current point source on an infinite planar grounded dielectric substrate. This closed form approximation includes the effects of the space wave, the surface wave and their coupling within the transition region near the source, and remains accurate as near as $0.1{\pi}_1$ from the source point for a substrate thickness as large as $0.04{\pi}_1$, where, ${\pi}_1$, is the free space wavelength, This result can significantly facilitate the rigorous moment method analysis of microstrip antenna arrays on relatively this substrates of practical interest. Numerical results illustrating the accuracy of the closed form approximation are presented and CPU times associated with some mutual impedance calculations are also included.

• Journal of Information Management
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• v.42 no.1
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• pp.221-244
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• 2011

Many records and documents are produced during the process of functions of local councils such as resolution, monitoring and balancing function, representation for the residents, Such records of local councils have importance in terms of objective basis and standards for local policy building and making. The most essential records among these are those of local councils assembly. The fundamental function of local councils is the assembly of individual members of the council and standing committees. For this, the author firstly reviewed the current management system of local council assembly records focusing on Daejeon Yuseonggu Council and conducted researches and interviews with the officers responsible for record keeping. And finally, the author analyzed such researches and findings. From this analysis, the author discovered the problems in the management of record keeping and suggested the improvement for the systematic management firstly in terms of institutional aspects and secondly in terms of the stages of record keeping and management based on ISO 15489, the international standard for information and documentation, records management.

• Journal of Korea Society of Industrial Information Systems
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• v.25 no.2
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• pp.11-18
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• 2020

Recently, a series of studies on virtual try-on (VTON) using images have been published. A comparison study analyzed representative methods, SCMM-based non-deep learning method, deep learning based VITON and CP-VITON, using costumes and user images according to the posture and body type of the person, the degree of occlusion of the clothes, and the characteristics of the clothes. In this paper, we tackle the problems observed in the best performing CP-VTON. The issues tackled are the problem of segmentation of the subject, pixel generation of un-intended area, missing warped cloth mask and the cost function used in the learning, and limited the algorithm to improve it. The results show some improvement in SSIM, and significantly in subjective evaluation.

• The Mathematical Education
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• v.60 no.4
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• pp.543-554
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• 2021

The dynamic geometric environment plays a positive role in solving students' geometric problems. Students can infer invariance in change through dragging, and help solve geometric problems through the analysis method. In this study, the continuous spectrum of the dynamic geometric environment can be used to solve problems of students. The continuous spectrum can be used in the 'Understand the problem' of Polya(1957)'s problem solving stage. Visually representation using continuous spectrum allows students to immediately understand the problem. The continuous spectrum can be used in the 'Devise a plan' stage. Students can define a function and explore changes visually in function values in a continuous range through continuous spectrum. Students can guess the solution of the optimization problem based on the results of their visual exploration, guess common properties through exploration activities on solutions optimized in dynamic geometries, and establish problem solving strategies based on this hypothesis. The continuous spectrum can be used in the 'Review/Extend' stage. Students can check whether their solution is equal to the solution in question through a continuous spectrum. Through this, students can look back on their thinking process. In addition, the continuous spectrum can help students guess and justify the generalized nature of a given problem. Continuous spectrum are likely to help students problem solving, so it is necessary to apply and analysis of educational effects using continuous spectrum in students' geometric learning.