• Title/Summary/Keyword: study of patterns

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The Study on Lossy and Lossless Compression of Binary Hangul Textual Images by Pattern Matching (패턴매칭에 의한 이진 한글문서의 유.무손실 압축에 관한 연구)

  • 김영태;고형화
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.22 no.4
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    • pp.726-736
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    • 1997
  • The textual image compression by pattern matching is a coding scheme that exploits the correlations between patterns. When we compress the Hangul (Korean character) text by patern matching, the collerations between patterns may decrease due to randoem contacts between phonemes. Therefore in this paper we separate connected phonemes to exploit effectively the corrlation between patterns by inducting the amtch. In the process of sequation, we decide whether the patterns have vowel component or not, and then vowels connected with consonant ae separated. When we compare the proposed algorithm with the existing algorith, the compression ratio is increased by 1.3%-3.0% than PMS[5] in lossy mode, by 3.4%-9.1% in lossless mode than that of SPM[7] which is submitted to standard committe for second generation binary compression algorithm.

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A Study on the Environmental factors of Department Store Lobbies (백화점 로비공간의 환경요인에 관한 연구)

  • 임명주;장찬범;곽희준
    • Archives of design research
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    • v.13 no.1
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    • pp.199-207
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    • 2000
  • The planning of large department store is differ from designing other spaces because it holds items to sell. To make effective selling area, those items are to be showed enough to attract potential customers. In well planned space, customers would enjoy shopping convenientiy and comfortably. There are some requirements to make those kind of space. First, the design must consider customers needs. Second. the design must show items own values effectively. And third is identity of the store. At this point entrance or lobby area would possibly take major role to imprint identity and store concept. The purpose of study is to make well planned lobby area in order to lead customers traffic patterns to effective selling spaces. The method of this study is establishing hypothesis about interior and exterior aspects which effect to traffic patterns. And build condition that helps testing the hypothesis. Through the processes mentioned above, we would possibly reach the result like, First, It is important to reserve enough lobby space to prevent oversizing of selling space and advise effective traffic patterns. Second, Organize the aspects that could cause the change of customers traffic patterns and bring those customers selling point. Third, Make useful context which can attract customers passing by.

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A Study on the Spatial Distribution Patterns of Co-authoring Activities in the Korean Cadastral Research Field (한국 지적학 연구분야 공동저술활동의 공간분포패턴연구)

  • Kim, Yun-Ki
    • Journal of Cadastre & Land InformatiX
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    • v.50 no.2
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    • pp.203-219
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    • 2020
  • The primary purpose of this study is to identify spatial distribution patterns of co-authoring activities in Korean cadastral science. The analysis showed that a small number of researchers played an essential role in the Korean cadastral co-authorship network. In particular, some authors not only had a significant influence on other nodes in the network but also served as intermediaries between researchers. Moreover, the distance between researchers influenced co-authorship decisions to a limited extent. This study differs considerably from previous studies in that it used spatial analysis techniques to identify spatial distribution patterns of co-authoring activities. However, this research is limited in that it applied only 2019 data to determine the spatial distribution pattern of co-authoring activities. We can overcome this limitation if we analyze the spatial distribution patterns of co-authoring activities using multi-year data in future studies.

Korean Streamflow Patterns In Relation To EI NiNO/Southern Oscillation

  • Kim, Young-Oh;Lee, Hyun-Suk
    • Water Engineering Research
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    • v.1 no.2
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    • pp.107-117
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    • 2000
  • Streamflow patterns at two gauging stations in Korea, An-Dong dam and Chung-Ju dam, are statistically analyzed in relation to EI Nino/Southern Oscillation (ENSO). As a measure of ENSO, the Southern Oscillation Index (SOI) is used on a monthly and seasonal basis. The traditional correlation analysis shows that cross correlations of the SOI with the seasonal streamflow are generally weak. To investigate the relationship between the extreme values of the SOI, which represent the EI Nino and La Nina events, and the corresponding streamflow patterns, the composite analysis is employed in this study. The composite analysis demonstrates that when EI Nino occurs, seasonal streamflows at An-Dong and Chung-Ju dams during the period from September of the EI Nino year to February of the following year appear to be drier than their means.

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A Study on $\phi$-AE Distribution Patterns Characteristics due to Treeing Deterioration (트리잉 열화에 따른 $\phi$-AE 분포특성에 관한 연구)

  • 박재준;강태오;김재환
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.41 no.9
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    • pp.1060-1070
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    • 1992
  • In this paper, characteristics of Acoustic Emission in Low Density Polyethylene were studied from tree initiation to breakdown under long-term inhomogeneous alternative electrical field. The voltage levels used were 9, 11 and 14[kV]. Especially, a newly developed automatic measuring system was used to measure time variations of AE average amplitude, AE pulse number, AE pulse distribution patterns due to polarities. The patterns wer specially the variated patterns, when tree propagated. Also, parameters for dielectric breakdown prediction, which were suggested by Okamoto, were calculated. The result was analysed by tree shapes and partial discharge activities in tree due to tree initiation and propagation.

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Effect of Non-uniform Perforation and Extended Inlet/outlet Length in the Concentric Resonator on the Transmission Loss (동심관형 공명기의 천공 분포 및 연장관이 전달 손실에 미치는 특성 해석)

  • Lee, Seong-Hyun;Ih, Jeong-Guon
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2005.11b
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    • pp.114-117
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    • 2005
  • In the reactive concentric resonator, perforated inner tubes are widely used for various purposes related to noise reduction, flow guiding, and structural aspects. Perforation distribution patterns influence both the acoustic performance and mechanical performance. In this study, the influence of distribution patterns on acoustic performance are explained by adopting the concept of extended inlet/outlet length. Predicted transmission with varying extended inlet/outlet length is compared with prediction by varying distribution patterns. The transmission loss difference due to perforation distribution patterns can be explained by changing the extended inlet/outlet length of the uniformly perforated resonator.

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Study on Characteristics of Maxillofacial Growth in Class III Malocclusion Patients by Cranial Base Growth (3급 부정교합 환자에서 두개저 성장 양상에 따른 악골 성장 특성에 관한 연구)

  • Son, Do-Kyoung;Park, Sung-Won;Lee, Jae-Min;Kim, Eun-Ja;Choi, Sang-Mun;Kim, Young-Woon;Choi, Mun-Gi;Oh, Sung-Hwan
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.33 no.6
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    • pp.483-489
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    • 2011
  • Purpose: Craniofacial structure form results from the adaptation to morphologic and functional changes in their neighboring structures for a mutual balance. The purpose of this study is classification of maxillomandibular complex growth pattern follow by cranial base growth pattern. And this study is identifying the correlation between maxilla-mandibular complex growth pattern and orthodontic criteria. Methods: 142 Class III malocclusion patients had orthognathic surgery at Wonkwang University Dental Hospital during April 2004 to October 2010. Patients were divided into 4 groups and the correlation between cranial base and maxillomandibular growth patterns were evaluated. Results: There was a correlation between cranial base and maxillomandibular growth patterns. Positive relationships were found between the occlusal plane, Incisor mandibular plane angle, mandibular plane, positioning of pogonion and the saddle angle, indicating maxillary growth patterns. Negative relationships were found between SNA, SNB, maxillary incisor angle and saddle angle. Positive relationships were found between the ratio of the anterior and posterior cranium, positioning of pogonion and the percentage of cranial depth indicating mandibular growth patterns. Negative relationships were found between the occlusal plane, maxillary incisor angle, mandibular plane, mandibular angle and cranial depth. Conclusion: Cranial base and maxillofacial growth patterns were correlated and the classification should be adjusted before orthognathic surgery.

The Effects of 24 weeks passive aquatic rehabilitation exercise on change muscular body type in Women with Osteoarthritis (24주간의 수동적 수중재활운동이 골관절염 여성의 근체형 변화에 미치는 영향)

  • Lee, Hye-Jin
    • Journal of the Korea Convergence Society
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    • v.8 no.7
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    • pp.349-356
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    • 2017
  • The purpose of this study is to provide guidelines for effective osteoarthritis passive aquatic rehabilitation program and form of exercise prescription through passive aquatic rehabilitation exercise for 24 weeks for women with osteoarthritis. The subjects of this study were the passive aquatic rehabilitation group (CG, n = 10) and the control group (AREG, n = 10) among the subjects who had been diagnosed with osteoarthritis by the K orthopedic surgeon and visited the hospital more than 3 times were selected. The results of this study showed that the change of shoulder height in the group was significantly different in passive aquatic rehabilitation exercise group (p <.001). There were significant differences in passive aquatic rehabilitation exercise group (p <.001) between the groups with inhaled sacpula patterns. Changes in the pelvis patterns inferior pattern of the left and right pelvis patterns in the group were significantly different in passive aquatic rehabilitation exercise group (p <.001).

A development of outdoor jackets for active senior males (액티브 시니어 남성을 위한 아웃도어 재킷 개발)

  • Kim, Ji-Eun;Kim, Eun-Kyong
    • Journal of the Korea Fashion and Costume Design Association
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    • v.20 no.2
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    • pp.31-46
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    • 2018
  • This study was carried out to offer basic data that can be used for outdoor wear production for active senior males, emerging as a new consumer bracket in the era of rapid aging. To this end, this study modified and complemented the patterns of outdoor jackets for active senior males based on existing outdoor jackets that received the most excellent evaluation. On the basis of the research outdoor wear wearing assessment results, this study confirmed those areas to be modified and proposed areas to be considered in manufacturing outdoor wear for this demographic. As a result of existing outdoor wear's wearing assessment, the jacket of brand B was shown to be the most excellent one. This study actually designed research outdoor wear patterns by modifying the problematic parts through the addition and subtraction of spare length or circumference in the sections where fit satisfaction was low by referring to the selected brands' patterns. The research outdoor wear was designed by referring to the preferred outdoor types and colors that were highlighted in the previous survey result of consumer wearing reality, based on the designs of the outdoor wear receiving the most excellent assessment in wearing assessment. Fabric that specially glued two-layered mesh that bonded the thin membrane of synthetic resin with polyester fabric was used as the material in this study. Wearing assessment was conducted by comparing the manufactured research outdoor wear and the existing outdoor wear selected as excellently assessed outdoor wear. Consequently, this study verified that the wearing fit of the research outdoor wear was more excellent in most items. This study proposed final patterns for outdoor jackets suitable for active senior males through the modification of several items that required improvements as per the wearing assessment of the research outdoor wear.

Molecular Epidemiology of Listeria monocytogenes by Ribotyping

  • Yang, Byoung-Seon
    • Biomedical Science Letters
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    • v.8 no.2
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    • pp.77-82
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    • 2002
  • Ten Listeria monocytogenes were isolated from clinical specimens and mussels, and their physio-biochemical characters were compared with the type strains. Ribotyping was used as a taxonomic tool to determine molecular epidemiological marker. Chromosomal DNA was cleaved with restriction enzymes HindIII and EcoRI. The fragment were subjected to Southern blot hybridization with 165 rDNA from B. subtilis by PCR. EcoRI patterns of Listeria strains showed 6 to 8 bands ranging from 0.75 kb to 11 kb band and they were classified into 6 groups. In comparison, HindIII patterns revealed that 5 to 7 bands ranging from 2.75 kb to 7.75 kb band and they classified into 5 groups. The various patterns of Listeria strains were observed within genus, species and isolated sources. 165 rRNA gene restriction patterns (ribotyping) are useful in epidemiological and taxonomic study.

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