• 한국정보과학회논문지:데이타베이스
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• 제31권3호
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• pp.287-296
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• 2004

최근 이동 컴퓨팅 환경 하에서 위치를 기반으로 하는 다양한 서비스가 점차 증가하고 있다. 본 논문은 이동 컴퓨팅 환경에서 대량의 공간 데이타베이스를 기반으로 하는 위치 기반 서비스를 지원하기 위하여, 요청되는 질의들 사이에 존재하는 의미적으로 연관성이 있는 빈발 항목인 연관 클래스 집합을 제안하고, 이를 효과적으로 찾는 방법에 대해 소개한다. 이때 요청되는 질의들의 시간적 연관 관계, 그리고 이러한 서비스를 제공해 주는 공간 객체들 사이의 거리와 사용자의 접근 특성이 함께 고려된다 이러한 연구 결과는 이동 환경이 갖는 제약점을 극복하면서 효과적으로 위치 기반 서비스를 지원하는 바탕이 된다 즉 생성된 연관 클래스 집합은 이동 컴퓨팅 환경에서 지리 정보를 서비스 할 때 관련 자료를 추천하는 시스템에 활용할 수 있고, 지리 정보를 고려한 광고 방송이나 도시 개발 계획 둥에 이용할 수 있으며, 이동 사용자를 위한 클라이언트의 캐쉬 정책에 응용될 수 있다.

• Ocean and Polar Research
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• 제29권2호
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• pp.135-153
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• 2007

Temporal (seasonal) and spatial distributions and variations of various physico-chemical factors (salinity, temperature, pH, DO, COD, SPM, POC, silicate, DIP, DIN) in surface and bottom waters were studied in the coastal environment with typical macro-tidal range and monsoonal weather condition, Gyeonggi Bay, west coast of Korea. Spacial distribution patterns of these factors were generally similar to each other, and appeared to be inversely related to the distribution pattern of salinity, suggesting that water quality of the study area was primarily controlled by the physical mixing process of Han-River freshwater with nearby coastal seawater. During flooding season, silicate- and nitrogen-rich Han River water directly flowed into offshore as far as $20\sim30\;km$ from the river mouth, probably causing serious environmental problems such as eutrophication and unusual and/or noxious algal bloom, etc. Except the surface water during summer flooding season, high concentrations of nutrients appeared generally in dry season, whereas low values in spring, possibly because of the occurrence of spring phytoplankton bloom. On the other hand, nutrient flux through the estuary seems to be primarily depending on river discharge, sewage discharge and agricultural activities, especially during the rainy season. Also, nutrients in this coastal waters are considered to be supplied from the sediments of tidal-flats, which developed extensively around the Han-River mouth, especially during fall and winter of dry and low discharge seasons, possibly due to the stirring of tidal flat sediments with highly enriched pore-water nutrients by storm. And also, COD and DIN concentrations in the study area consistently increased during the last 20 years, probably because of agricultural activities and increasing discharge of industrial and domestic wastes.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.734-743
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• 2007

고속철도 정차역은 시설현황, 정차역의 위치, 주변 토지이용 등 역세권 주변의 개발 정도에 따라 정차역에서 유발 및 유입되는 통행량에 큰 차이를 보이게 되며, 역과 역세권이 잘 발달된 정차역은 유동인구가 상당히 많음에 따라 특별구역(시설물)으로 정의되어질 수 있다. 이러한 특별구역은 많은 통행량을 발생시키는 토지이용 구역으로서 대학교, 공항, 대형쇼핑몰 등이 해당되어 왔으며 고속철도의 이용자가 증가함에 따라 정차역이 지역 내 통행수요에 미치는 영향을 고려하였을 때 특별구역으로 정의 될 필요가 있다. 지역내 교통처리 계획 및 연계교통계획 수립을 위해 특별구역에 대한 통행수요추정은 예전부터 상당한 관심이 요구되어 왔다. 그러나 전통적인 4단계 모형의 통행발생 및 분포 모형으로는 이러한 특별구역의 통행수요를 예측하는데 한계가 있으므로 개인별 통행행태를 고려할 수 있는 새로운 분석방법인 활동기반모형(Activity-Based Travel Demand Model)의 적용이 필요하다. 이에 본 연구에서는 고속철도 정차 역의 교통수요추정을 위해 활동기반 모형의 적용방안에 대하여 소개하며 향후, 적용가능성에 대하여 제시하도록 한다.

• Journal of Animal Science and Technology
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• 제63권5호
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• pp.977-983
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• 2021

Closely correlated expression patterns between ubiquitin specific peptidase 9X-linked (USP9X) and adherens junction formation factor (Afadin) in mouse testis development suggests that Usp9x regulates the deubiquitination of Af-6 (also known as Afadin, AFDN), and subsequently, the cell adhesion dynamics during gametogenesis. However, this relationship has not yet been tested in other domestic animals. The study was examined the temporal and spatial expression patterns of porcine USP9X and AFDN from the pre-pubertal to adult stages using real time-PCR and immunohistochemistry. Furthermore, we detected the transcripts of USP9X and AFDN in the testis of 1-, 6- and 12-months old boar, respectively. USP9X and AFDN were found to have similar expressions patterns, with basal expression after 1 month followed by a significant up-regulation from 6 months (puberty) onwards. In addition, neither the AFDN or USP9X proteins were detected in spermatogenic cells but they were expressed in the leydig cells and sertoli cells. USP9X was detected around the basal lamina during pre-puberty, and predominantly expressed in the leydig cells at puberty. Finally, in adult testis, USP9X was increased at the sertoli cell-cell interface and the sertoli cell-spermatid interface. In summary, closely correlated expression patterns between USP9X and AFDN in boar testis supports the previous findings in mice. Furthermore, the junction connections between the sertoli cells may be regulated by the ubiquitination process mediated via USP9X.

• 한국환경생태학회지
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• 제29권3호
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• pp.421-430
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• 2015

본 연구는 천수만 조하대에 서식하는 대형저서동물의 군집을 분석하여 방조제 건설에 따른 천수만 저서생태계의 변화를 이해하고자 하였다. 생태학적인 변화를 이해하기 위하여 대형저서동물의 분포, 우점종, 시.공간적 변화 그리고 유기물 오염을 분석하였다. 천수만에는 총 252종이 출현하였고, 출현밀도는 $681ind./m^2$이었다. 종 다양도는 모든 계절에서 방조제를 기준으로 만 입구 지역으로 갈수록 증가하는 양상이었다. 천수만 내 연중 우점한 대형저서동물은 송곳갯지렁이로 나타났다. 우점종 출현양상은 종 다양도 그리고 정점별 퇴적물 내 유기물 함량과 상관관계를 갖는 것으로 확인되었다. BPI분석 결과, 방조제 인근 정점에서는 4~5등급으로 유기물 오염이 진행된 것으로 확인되었고, 만 입구 지역에서는 1~3등급으로 상대적으로 유기물 오염이 되지 않은 것으로 확인되었다. SAB-curve 분석 결과, 방조제를 기준으로 만 입구로 갈수록 생태계 전이지역이 감소하는 것으로 나타났다.

• PNF and Movement
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• 제1권1호
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• pp.33-41
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• 2003

Objectives : The purpose of this study was to describe and compare the temporo-spatial gait characteristics of healthy young people with those of healthy elderly people. Methods: The data were collected by 40 volunteers. 20 subjects were between 20 and 31 years of age, and 20 subjects were between 65 and 84 years of age. Temporal and spatial parameters of gait were analysed for using the computerized GAITRite system. Results : The system integrates specific components of locomotion to provide a single, numerical representation of gait, the Functional Ambulation Performance score. Differences in gait characteristics between the two groups were examined using a correlated t-test(p<.05). Significant differences were observed between the groups for step length, step/extremity ratio and velocity. Young people demonstrated a significantly larger velocity, step length and step/extremity ratio than the elderly people. Conclusions: These results indicate that the GAITRite system can be useful in detecting footfall patterns and selected time and distance measurements of young and older persons. Additionaly, differences in walking velocity, step length and step/extremity ratio between old and young people may have influenced the gait characteristics measured.

• 생태와환경
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• 제43권2호
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• pp.199-211
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• 2010

The objectives for this study were to evaluate spatial and temporal characteristics of water quality, based on long-term water quality monitoring data during 1993~2008. We found that physico-chemical and ecological conditions in the Daecheong Reservoir (DR) were modified by the construction of upper dam (i.e., Yongdam Reservoir). total phosphorus (TP), Secchi depth (SD), and chlorophyll-a (CHL) in the DR showed significant longitudinal decreases along the headwater-to-the downlake, indicating a large spatial variation, and this gradient was more intensified during the high-flow season (monsoon). Nutrient-rich water containing high nitrogen and phosphorus in the monsoon season (July~August) passed through the reservoir as a density current in the metalimnetic depth, and also high suspended solids increased in the metalimnetic depth, especially during the monsoon. According to the deviation analysis of Trophic State Index (TSI), >50% of TSI (CHL)-TSI (SD) and TSI (CHL)-TSI (TP) values were negatives, so that inorganic suspended solids (non-votatile solids) influenced the underwater light regime against phytoplankton growth. Also, ratios of CHL:TP after the dam construction evidently increased, compared to the values before the upper dam constructions, indicating a greater yield of phytoplankton in the unit phosphorus. Overall data showed that ecological and functional changes in Daecheong Reservoir occurred after the construction of upper dam (Yongdam Reservoir).

• 패션비즈니스
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• 제24권3호
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• pp.1-16
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• 2020

The purpose of this study is to find the aesthetic characteristics of costume design as mise-en-scène in movie 'The Danish Girl'. the methods of this study was carried out prior research, literature studies and qualitative research of visual content analysis by DVD. The spatial and temporal scope of the study is Copenhagen, Denmark from 1926 to 1931, and Paris, France. The styles of the times(1925 ~ 1931) and the spatial sensibilities of women's costumes in terms of form and color were examined thorough out the story. As the results, the costume are based on the 1920's Art Deco style like straight silhouette and some of them are oval soft silhouette. The colors are harmonized or in conflict based on Nordic colors such as blue-green, gray and yellow. Rather than expressing the internal conflict between the two main characters, the costume was focused on the role and character. And also exotic tastes like Japanese and Egyptian textiles patterns and decorations. Therefore, it was found that the movie costume played a role as one of the very important mise-en-scène.

• 지적과 국토정보
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• 제47권2호
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• pp.19-37
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• 2017

VIIRS-DNB 데이터는 기존의 DMSP-OLS 데이터에 비해 야간에 발생하는 빛의 밝기를 측정하는데 더 우수한 성능을 보여준다. 하지만 지금까지 우리나라에서 VIIRS-DNB 데이터를 이용해 야간 빛의 분포 변화를 분석한 연구는 상당히 드물다. 이 연구에서는 우리나라의 수도권을 대상으로 2013~2016년간의 야간 빛의 분포 및 변화 패턴을 파악하고, 공간회귀모델을 통해 그 요인을 분석하였다. 이를 위해 두 시점 간의 변화를 살펴봄은 물론 계절간 변화 양상 또한 함께 분석하였다. 주요한 결과는 다음과 같다. 첫째, 2013년과 2016년 두 시점 모두 야간 빛은 서울과, 인천, 그리고 서울과 인접한 경기도의 도시에 집중되어 인구밀도 및 주거지관련요인, 경제토지이용관련요인 등과의 연관성을 나타내었다. 둘째, 2013년과 2016년을 비교해보면 야간 빛의 강도는 특히 서울에서 약화되는 경향을 보이고 있는데, 이는 인구밀도의 변화 및 산업용 건물의 비중과 관련된 것으로 나타났다. 셋째, 서울, 그리고 인천과 경기도의 주변 지역들은 야간 빛의 계절 변동성이 높게 나타났는데, 겨울(12월, 1월, 2월) 및 가을(10월, 11월)에 빛의 강도가 가장 강하게 나타났다. 넷째, 야간 빛의 계절간 변동은 적설면적 변화와 유의미하게 양적 상관관계 나타났고, 알베도의 변화와 유의미하게 음적 상관관계 나타났다.

• 대한자원환경지질학회:학술대회논문집
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• 대한자원환경지질학회 2000년도 춘계 공동학술발표회
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• pp.110-110
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• 2000

Temporal and spatial distribution patterns of the magmatic rocks and associated ore deposits in the Mesozoic magmatic - metallogenic belt along the Yangtz River, Anhui Province are used to determine and discuss the crust - mantle interaction processes. The magmatic rocks are Cu - Au mineralized high - K calc - alkalic intermediate ¬acidic (CAK) and Fe - Cu mineralized high - Na alkalic - calc intermediate - basic intrusive rocks (FCN) in the central part of the belt and grade to Cu - Mo - Pb - Zn - Ag mineralized calc - alkalic granitoids (CMG) and A - type granites (AG) in the southern and northern parts of the belt. Samples from the CAK and CMG yield Rb - Sr isochron ages of 137 - 140Ma with $(^{87}Sr/^{86}Sr)_{o}$ = 0.7060 - 0.7101, while those from the FCN and AG yield the ages of 120 - 129Ma with $(^{87}Sr/^{86}Sr)_{o}$ = 0.7047 - 0.7077. The Sr isotope ratios, CriTh ratios 0.4 - 3.1), Eu/Eu* ratios < 0.79 - 1.05) and initial epsilon (Nd) values (-16.6 - -6.3) for the CAK and CMG are consistent with magma derivation from old metamorphic basement rocks rich in metallogenic elements through a two - stage process of mantle - derived magma underplating caused by primary lithosphere extension and subsequent partial melting. On the basis of Sr isotope data, CriTh ratios (3.4 - 13.8), Eu/Eu* ratios (0.86 - 1.13) and initial epsilon (Nd) values (-7.7 - +1.4), the FCN and AG are considered to be formed through syntexis with material input from the mantle that resulted from further lithosphere extension followed by mantle - derived magma underplating on a large scale.