• Proceedings of the KIEE Conference
• /
• 1995.07b
• /
• pp.968-970
• /
• 1995

The Information Diffusion Neural Networks is proposed to regenerate the 3-dimensional terrain elevation data from contour lines. Contours in paper map are an expression of terrain elevation in highly compressed form. A real time regeneration of terrain data for each grid points from the the contour information is required for various applications. In the proposed neural networks, the elevation information on contours is diffused to neighbor units through updating its output toward that of neighbor units. An interpolation of terrain information is achieved from such computation mechanithm. Terrain data regeneration simulation has been done with sampled terrain data on contour lines.

• Journal of Information Technology Services
• /
• v.7 no.1
• /
• pp.205-218
• /
• 2008

This paper proposes a geospatial data visualization system supporting validation of GML documents. GIS systems manage and use both of spatial and non-spatial data. Currently, most GIS systems represent spatial data in GML (Geography Markup Language) developed by OGC. GML is a language for representation and sharing of spatial information, and until now many systems have been developed in GML. GML does not support expression of non-spatial data, i.e., relational information of spatial objects, and thus most systems extend GML to describe non-spatial information. However, it causes an issue that the systems only accepting standard GML documents cannot process the extended documents. In this paper, we propose a new GIS data visualization system to resolve the aforementioned Issue. Our proposed system allows the representation of both types of data supporting independency of spatial data and non-spatial data. It enhances interoperability with other relevant systems. Therefore, we can develop a rich and high Quality geospatial information services.

• Tuberculosis and Respiratory Diseases
• /
• v.42 no.4
• /
• pp.522-534
• /
• 1995

Background: In the pathogenesis of acute lung injury induced by lipopolysaccharide(LPS), oxygen radiclls are known to be involved in one part. Superoxide dismutase(SOD) protects oxygen radical-induced tissue damage by dismutating superoxide to hydrogen peroxide. In eukaryotic cells, two forms of SOD exist intracellularly as a cytosolic, dimeric copper/zinc-containing SOD(CuZnSOD) and a mitochondrial, tetrameric manganese-containing SOD(MnSOD). But there has been little information about SOD gene expression and its regulation in pulmonary alveolar macrophages(PAMs). The objective of this study is to evaluate the SOD gene expression induced by LPS and its regulation in PAMs of rat. Method: In Sprague-Dawley rats, PAMs obtained by broncholaveolar lavage were purified by adherence to plastic plate. To study the effect of LPS on the SOD gene expression of PAMs, they were stimulated with different doses of LPS($0.01{\mu}g/ml{\sim}10{\mu}g/ml$) and for different intervals(0, 2, 4, 8, 24hrs). Also for evaluating the level of SOD gene regulation actinomycin D(AD) or cycloheximide(CHX) were added respectively. To assess whether LPS altered SOD mRNA stability, the rate of mRNA decay was determined in control group and LPS-treated group. Total cellular RNA extraction by guanidinium thiocyanate/phenolfchlorofonn method and Northern blot analysis by using a $^{32}P$-labelled rat MnSOD and CuZnSOD cDNAs were performed. Results: The expression of mRNA in MnSOD increased dose-dependently, but not in CuZnSOD. MnSOD mRNA expression peaked at 8 hours after LPS treatment. Upregulation of MnSOD mRNA expression induced by LPS was suppressed by adding AD or CHX respectively. MnSOD mRNA stability was not altered by LPS. Conclusion: These findings show that PAMs of rat could be an important source of SOD in response to LPS, and suggest that their MnSOD mRNA expression may be regulated transcriptionally and require de novo protein synthesis without affecting mRNA stability.

• Korean Journal of Agricultural Science
• /
• v.38 no.1
• /
• pp.71-77
• /
• 2011

Pigs have anatomically and physiologically very similar to human and because of this, pigs are the possible xenotransplantation donors for human organs. PERVs (Porcine Endogenous Retroviruses) are known to be one of the possible obstacles for using porcine organs regardless of the immunological barriers. In order to understand the expression patterns of PERVs in Korean native pigs, we investigated PERV expressions in porcine liver, heart, spleen, and lung samples. After RNA extraction, two types of specific PERV envelope genes (ENV-A and ENV-B) were amplified using specific primers by RT-PCR. The results indicated that the variable PERV expressions were observed in inconsistent patterns among animals and tissues. The PERV expressions were verified with semi-quantitative real-time PCR with three replicates. Even though, these results confirm the previous findings that the PERVs were differentially expressed between animals and tissues. These results also give some valuable information for xenotransplantation when using the Korean native pigs as the organ donor.

• Proceedings of the IEEK Conference
• /
• 2005.11a
• /
• pp.537-540
• /
• 2005

본 논문에서는 사람의 감정, 건강상태, 정신상태등 다양한 정보를 포함하고 있는 웃음, 슬픔, 졸림, 놀람, 윙크, 무표정 등의 표정을 인식하기 위한 표정의 특징이 되는 얼굴의 국부적 요소인 눈과 입을 검출하여 표정의 특징을 추출한다. 표정 특징의 추출을 위한 전체적인 알고리즘 과정으로는 입력영상으로부터 칼라 정보를 이용하여 얼굴 영역을 검출하여 얼굴에서 특징점의 위치 정보를 이용하여 국부적 요소인 특징점 눈과 입을 추출한다. 이러한 특징점 추출 과정에서는 에지, 이진화, 모폴로지, 레이블링 등의 전처리 알고리즘을 적용한다. 레이블 영역의 크기를 이용하여 얼굴에서 눈, 눈썹, 코, 입 등의 1차 특징점을 추출하고 누적 히스토그램 값과 구조적인 위치 관계를 이용하여 2차 특징점 추출 과정을 거쳐 정확한 눈과 입을 추출한다. 표정 변화에 대한 표정의 특징을 정량적으로 측정하기 위해 추출된 특징점 눈과 입의 눈과 입의 크기와 면적, 미간 사이의 거리 그리고 눈에서 입까지의 거리 등 기하학적 정보를 이용하여 6가지 표정에 대한 표정의 특징을 추출한다.

• Journal of Satellite, Information and Communications
• /
• v.9 no.3
• /
• pp.64-69
• /
• 2014

Exhibition which was a boring and rigid image once has recently hold a place as an intimate culture to the public such that audiences can feel and participate in exhibition at first hand. Along with this, forms and directions of exhibition become diversified, and various attempts have been made. In addition, with such changes, ways of expressing exhibition contents become diversified as well and ways of inducing sensible and psychological expressions and experience are receiving attention rather than formal and physical expressions. This study aims to provide audiences with ways of being able to more effectively expressing exhibition contents, atmospheres, sensibility and so on by applying lights and colors to in expression of exhibition contents.

• Journal of fish pathology
• /
• v.28 no.2
• /
• pp.99-107
• /
• 2015

Despite its economic importance as an aquaculture species, the molecular and genetic information regarding physiologically important elements in rock bream (Oplegnathus fasciatus) is not completely understood. Rab proteins play a vital role in cellular mechanisms and immunity as one of the key regulators of membrane trafficking. In this investigation, a Rab gene, named as RbRab-5C-like, was identified from Oplegnathus fasciatus. RbRab-5C-like protein exhibited high homology with Rab proteins of other species and possessed signature characteristics of Rab proteins with four conserved cysteine residues. Phylogenetic analysis showed that RbRab-5C-like clustered with other fish counterparts. The RbRab-5C-like genomic sequence possesses six exons and five introns. Transcriptional analysis revealed that RbRab-5C-like was ubiquitously expressed in all examined tissues with the highest expression occurring in the liver. While the structural and homologic characteristics of RbRab-5C-like suggest a strong conservation of this element in different species, its mRNA distribution implies a wide range of biological significance in rock bream.

• Journal of KIISE:Software and Applications
• /
• v.30 no.5_6
• /
• pp.487-496
• /
• 2003

The promoter that plays a very important role in gene expression as a signal part has various binding sites for transcription factors. These binding sites are located on various parts in promoter region and have highly conserved consensus sequence patterns. This paper presents a new method for the consensus pattern search in promoter regions using genetic algorithm, which adopts the assumption of N-occurrence-per-dataset model of MEME algorithm and employs the advantage of Wataru method in determining the pattern length. Our method will be employed by genome researchers who try to predict the promoter region on anonymous DNA sequence and to find out the binding site for a specific transcription factor.

• The Research Journal of the Costume Culture
• /
• v.9 no.4
• /
• pp.592-601
• /
• 2001

This study focuses on fashion adoption behavior of adolescents. The impact of their clothing involvement factors and socio-demographic factors on their fashion adoption behavior was examined. Three core issues were identified for empirical test: 1) Elements of clothing involvement for adolescents; 2) Fashion adoption behavior of adolescents; 3) Impact of clothing involvement elements on fashion adoption behavior. The Likert Type questionnaires were used to measure clothing involvement and fashion adoption behavior. The data of 472 samples drawn from middle and high school students in Taegu Metropolitan City were analyzed by factor analysis, ANOVA, Scheff test, t-test and regression analysis. Main results of the study are as follows. 1 . Concept of the clothing involvement is composed of five dimensions: importance, fashion, self-expression, pleasure, and buying risk. 2. Socio-demographic factors do influence fashion adoption behavior. Average monthly pocket money, expenditures on clothes and household income are found to have statistically significant impacts on the adoption behavior. Female students are more fashion-oriented than male students. 3. The clothing involvement elements are found to have significant influences on fashion adoption behavior: fashion, importance and self-expression elements on fashion innovation; fashion, importance and pleasure elements on fashion information search.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.15 no.5
• /
• pp.881-888
• /
• 2020

In this paper, in order to improve the degraded BER performance of the stronger channel user in non-orthogonal multiple access(: NOMA) with interactive mobile users, we propose the negative correlation bit-to-symbol(: B2S) mapping. First, the closed-form expression for the BER of the negative correlation B2S mapping receiver is derived, and then it is shown that the BER of the negative correlation B2S mapping receiver is improved, compared with those of the ideal perfect successive interference cancellation(: SIC) receiver and positive correlation receiver. Additionally, based on the analytical expression, signal-to-noise(: SNR) gain is calculated, and the superiority of the negative correlation B2S mapping receiver is validated.