• Title/Summary/Keyword: upward system

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A Study of effective installation patterns of face bolts using 3D-FDM analysis (터널 안정화를 위한 페이스볼트의 효율적 배치에 관한 수치해석적 연구)

  • Seo, Kyoung-Won;Bae, Gyu-Jin;Nishimura, Kazuo;Domon, Tsuyoshi
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.8 no.2
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    • pp.141-149
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    • 2006
  • For application of NATM, the self-supporting until installation of the supporting system must be satisfied. However, the face of a tunnel are always unsupported and therefore it is fairly vulnerable to tunnel collapses. Face blots are well known and widely used to prevent the deformation of the tunnel face and its circumference, which are installed horizontally toward the tunnel axis generally. To maximize the supporting effect of face bolts, this study has analysed the effective design patterns of face bolts by changing their installation angles. As the conclusion, it has been found that the axial displacement of the face increases slightly by installing the outermost bolts upward from the axis but surface settlement at 2.5D behind the face decreases up to 18%.

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A Study on the Relationship between Organizational Performance and Organizational Communication in Public Libraries: Based on Service Quality Measured with LibQUAL+TM (공공도서관 조직성과와 조직 커뮤니케이션과의 관계 연구: LibQUAL+TM 모형에 따른 서비스 품질을 중심으로)

  • Kim, Jihae;Kim, Giyeong
    • Journal of the Korean Society for information Management
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    • v.31 no.3
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    • pp.65-87
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    • 2014
  • Organizational communication is an element of organizational structure formation; it is also a process of achieving organizational goals through the information sharing among the staff members in the organization as a social system. Organizational performance is a multidimensional concept composed of efficiency and effectiveness and satisfaction. Effectiveness implies service quality and the degree of goal achievement. Service quality by using the $LibQUAL+^{TM}$ model can be considered as an objective performance measure for libraries. This study aims to identify the effect of organizational communication in public libraries on service quality as a performance measure using the $LibQUAL+^{TM}$ model through statistical analyses of the results from questionnaire surveys of librarieans and users in 8 public libraries in Seoul metropolitan area. The result says the characteristics of organizational communication(upward, horizontal, downward communication) affects the three elements in the library service quality, such as affect of service, information control and library as place.

A Study on Synchronization Effect of A Multi-dimensional Event Database for Big Data Information Sharing (빅 데이터 분석정보 공유를 위한 다차원 이벤트 데이터베이스의 동기화 효과 연구)

  • Lee, Choon Y.
    • Journal of Digital Convergence
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    • v.15 no.10
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    • pp.243-251
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    • 2017
  • As external data have become important corporate information resources, there are growing needs to combine them with internal data. This paper proposes an ontology-based scheme to combine external data with multi-dimensional databases, which shall be called multi-dimensional event ontology. In the ontology, external data are represented as events. Event characteristics such as actors, places, times, targets are linked to dimensions of a multi-dimensional database. By mapping event characteristics to database dimensions, external event data are shared via multi-dimensional hierarchies. This paper proposes rules to synchronize information sharing in multi-dimensional event ontology such as upward event information sharing, downward event information sharing and complex event information sharing. These rules are implemented using Protege. This study has a value in suggesting Big Data information sharing processes using an event database framework.

Features of Korean Rainfall Variability by Western Pacific Teleconnection Pattern (서태평양 원격패턴에 따른 한국 4월 강수량의 변동 특성)

  • Choi, Jae-Won;Park, Ki-Jun;Lee, Kyungmi;Kim, Jeoung-Yun;Kim, Baek-Jo
    • Journal of Environmental Science International
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    • v.24 no.7
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    • pp.893-905
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    • 2015
  • This study analyzes the correlation between Western Pacific (WP) teleconnection pattern index (WPI) in April during 1954-2008 and rainfall amounts in the same month. Based on the results, it is identified that there have been strong positive correlations between central China, Korea and the southwestern part of Japan in the East Asian region. Through differences between 10 positive WP years and 10 negative WP years selected from the April WPI excluding ENSO years, it is found that rainfall amounts increase in April of positive WP years due to the following characteristics. Increases in rainfall amounts are evident in the East Asian middle latitudinal region where the positive correlation between the two variables is the highest and this is because anomalous southwesterlies are strengthened in the East Asian middle latitudinal region due to the spatial pattern of a south-low-north-high anomalous pressure system centered on this region that is made by anomalous anticyclones centered on the southeastern side of the region and other anomalous anticyclones centered on the northeastern side of the region. In addition, anomalous westerlies (jet) are strengthen in the upper troposphere of the East Asian middle latitudinal region and as a result, anomalous upward flows are strengthened in this region and thus anomalous warm air temperatures are formed in the entire level of the troposphere in the region. In addition to atmospheric environments, anomalous warm sea surface temperatures are formed in the seas in the East Asian middle latitudinal region to help the rainfall amount increases in the East Asian middle latitudinal region.

The Analysis of Distribution and Characteristics of Forest Fires Damage over 30 ha in Korea (우리나라 30 ha 이상 산불피해의 분포 및 특성 분석)

  • Lee, Hyung-Seok;Lee, Si-Young
    • Fire Science and Engineering
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    • v.25 no.5
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    • pp.39-46
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    • 2011
  • In order to consider the prevention countermeasure to the occurrence of forest fires, analysing characteristic of the past forest fire data is needed. This research analyzed distribution and characteristics of forest fires damage over 30 ha based on statistics data of forest fires in Korea between 1975 and 2010. As a result, the number of forest fires damage over 30 ha as 23 was most occurred in 1978. Forest fires show an upward tendency from 1970 to 2000. Forest fires of 30 ha~50 ha damaged area was most occurred. Forest fire in Gangwon province was occurred as the number of total 66 (37.0 %). Gangwon province was superior in point density analysis. The number of forest fire occurrence over 30 ha was most high to 114 (63.0 %) in April and to 44 (24.3 %) in Sunday. The occurrence number of forest fire and damage caused by forest fire is increasing more and more since 1975, appropriate authorities can use effectively in devising policy for forest fire prevention from this result.

Study on Sea Level Changes in Korean Peninsula by Using Satellite Altimetry Data (위성 고도계 자료를 활용한 한반도 해수면 높이 변동 연구)

  • Hwang, Do-Hyun;Yoon, Hong-Joo;Seo, Won-Chan
    • The Journal of the Korea institute of electronic communication sciences
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    • v.11 no.3
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    • pp.325-330
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    • 2016
  • Sea level is upward trend since the end of 19th century, it is accelerating after 20th century. Because sea level height has regional differences, we concerned sea level change in Korean Peninsula. We used Topex/Poseidon, Jason-1 and Jason-2 satellite altimetry data which has $1/4^{\circ}$ resolution. From 1993 to 2013, for 21 years, monthly mean sea level anomaly was negative between January and April, positive between March and October. Bohai Bay in China, affected the continental climate, showed big sea level changes. Mean sea level data showed remarkably affecting the continental climate in Bohai Bay in China, the Kuroshio Current and eddy affects the sea level change.

Surface Information Acquisition for Asphalt Concrete Pavement Using Digital Video Camera (디지털 비디오카메라를 이용한 아스팔트 콘크리트 포장 노면 정보획득)

  • Seo, Jeong-Hoon;Seo, Dong-Ju;Lee, Jong-Chool;Lee, Sung-Rock
    • Journal of Korean Society for Geospatial Information Science
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    • v.12 no.3 s.30
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    • pp.51-59
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    • 2004
  • In the study, there has been a sharp upward trend in road maintenance cost as the expansion of road networks increases. Running a pavement management system(PMS) is indispensable for efficient and scientific maintenance of the whole road networks with limited maintenance budgets. With a PMS, a maintenance plan should be drawn up after surface conditions are precisely examined and analyzed. The majority of the present PMSs are run by the fact that experts first examine surface conditions on sites, and then enter results into systems. However, considering the actual circumstances of the present time and the increase in paved road hereafter, it is inefficient that experts examine the whole paved roads in person and long-lasting PMSs can not be kept up. As a result, after analyzing the accuracy of 3-D coordinates representing road surfaces that was decided using multi orientation and digital photogrammetry, the average of standard errors turned out to be 0.0427m on the X-axis, 0.0527m on the Y-axis and 0.1539m on the Z-axis. It was found to be good enough to be put to practical use for maps drawn on scales below 1 :1000, which are being currently made and used within the country, and GIS data.

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A Study on the Man Disguise's Clothes in the Female Kukkuk and Takarazuka Revue (여성 국극(女性國劇)과 다카라즈카 가극의 남장(男裝) 의상에 관한 연구)

  • Kim, Hee-Jung
    • The Research Journal of the Costume Culture
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    • v.15 no.3 s.68
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    • pp.510-524
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    • 2007
  • There is something common between the Korean female Kukkuk and the Japanese Takarazuka Revue in that actors are all females and love is the main theme. Some of the females should play men's roles, so they are described as ideal men and are more manly than real men, and female audiences are attracted by them. It is hard for actresses to play men's roles-they have to stretch open their shoulders, walk with long steps and produce a deep voice. They put on a makeup a little exaggeratedly to perfectly disguise themselves as men and express strong images-some red tone makeup on their face, thick eyebrows with their ends upward, thick eye lines to make eyes seem bigger and stronger, and thick side whiskers. On the contrary, a makeup for female characters is softer to highlight femininity with thin penciled hair parted and braided on the sides of the face. The Takarazuka Revue's students are divided into male characters and female ones from the regular course of music schools, and they select their roles in consideration of their height and range of voice, mainly based on their wish. In case of male characters, they need a long career and verification of ability to be the best. Females playing men's roles and showing their manliness are violation of a social custom standardizing the character of males and females and are the reverse of roles expected by a society or a culture. A world experienced by these plays is a kind of revolt breaking the taboo of the patriarchal system.

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Recognition of Chinese Automobile License Plates (중국 자동차 번호판 인식)

  • Ahn, Young-Joon;Wee, Kyu-Bum;Hong, Man-Pyo
    • The KIPS Transactions:PartB
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    • v.14B no.2
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    • pp.81-88
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    • 2007
  • We implement automobile license plates recognition system. These days automobile license plate recognition systems are widely used for tracing stolen cars. managing parking facilities, ticketing speeding cars, and so on. Recognition systems largely consist of three parts plates extraction, segments extraction, and segment recognition. For plates extraction, we measure the degree of inclination of plate. We use filters that extract only the horizontal components of the front of an automobile to measure the degree of inclination. For segment extraction, we trace the change of the number of blocks that consist solely of foreground pixels or background pixels as the horizontal scanning line moves along upward. For recognition of each individual letter or digit, we devise a variant of template matching method, called comparative template matching. Through experiments, we show that comparative template matching is less prone misled by noises and exhibits higher performance compared to the traditional method of template matching or histogram based recognition.

The Form of Dress related to the Ideal Beauty of Body - from Ancient Egypt to the Romantic Period- (인체에 대한미의식에 따른 복식형태 -고대 이집트에서 낭만주의 시대까지-)

  • Ryu Ki-Joo;Kim Min-Ja
    • Journal of the Korean Society of Clothing and Textiles
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    • v.16 no.4 s.44
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    • pp.357-369
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    • 1992
  • The purpose of this study was to clarify the relationship between the Ideal Beauty of Body and the Form of Dress, and to analyze its historical perspectives. First of all, the concept of the Ideal Beauty of Body, the definition of Dress Form, and the method and system to clarify Dress Form were depicted. Based on this frame work, the Form of Dress related to the Ideal Beauty of Body was described historically. For this purpose, documentary research were conducted and representative photography and paintings were used. The analysis was limited to the female one-Piece dress from Ancient Egypt, Greece, Rome, Byzantine, Gothic, Renaissance, Baroque, Rococo, Naoclassicism, and to Romanticism. The results were as follows: 1. The Ideal Beauty of Body was found to be different throughout history and to be intimate- ly linked with fashionable dress. 2. The Form of Dress consisted of four basic components: The form of body itself, the form of clothing itself, the method of wearing, and the relationship between body and clothing. 3. The standards for classification of body form were body structure, body type, body proportion, posture, and movement. Clothing form was generally classified into flat type (unstructured type) and three dementional type (structured type); flat type was subclassified into draped type and tunic type. The method of wearing was classified into attached type, tying-up type, wrap·around type, pull-over type, open type and plastistic type. The relationship between body and clothing after wearing was generally classified into body priority type and clothing priority type. The clothing priority type was further divided into body exaggeration type and body concealment type; Body exaggeration type was further divided into upward type, downward type, forward type, backward type, right type and constriction type. 4. The pursuit of venus coelestis, metaphysical body part, ectomorphic body type, flat type clothing, body priority type; the pursuit of Venus Naturalis, physical body part, endomorphic body type, three dementional type clothing, clothing priority type proved to be closely related respectively by the historical study on the Ideal Beauty of Body and the Form of Dress.

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