• 제목/요약/키워드: sunshine

검색결과 562건 처리시간 0.027초

아파트 단지내의 열섬효과가 대기오염물질 확산에 미치는 영향 해석을 위한 열유동장 수치모의 (A Numerical Simulation of Heat Flow Field for Heat Island Effect Analysis to Air Pollutants Dispersion in Apartment Complex)

  • 장은숙
    • 한국환경과학회지
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    • 제14권6호
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    • pp.577-582
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    • 2005
  • Enormous apartment complexes in urban areas, temporary inversion state and heat island effect occur due to the strong sunshine and weak wind speeds which hinders the dispersion of air pollutants that are emitted from neighboring areas of apartment complexes. In this study, analysis were conducted by using the Fluent code based on the CFD(Computation Fluid Dynamics), including building layout, material, building height from the ground surface, the heat, analysis of flow field in the apartment complex. It was estimated that the temporal radiation inversion phenomenon during the daytime, which was caused by the weak wind speed and higher temperatures in the upper level, contributed to the stagnation of the air pollutants in the lower layer of the apartment complex.

수질 영향평가 신뢰수준 향상을 위한 낙동강 유역 미관측 지점에서의 일사량 추정: 수정형 Angstrom모형과 투과율모형의 비교 (Estimation of Daily Solar Radiation at the Missing Point for Water Quality Impact Assessment in Nakdong River Watershed: Comparison of Modified Angstrom Model and Transmittance interpolation Model)

  • 이길하
    • 환경영향평가
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    • 제21권1호
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    • pp.219-227
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    • 2012
  • Daily solar radiation is essential for water resources planning and environmental impact assessment. However, radiation data is not commonly available in Korea other than in big cities, and there has been no direct measurement for rural areas where water resources planning and environmental impact assessment is usually most needed. In general, missing radiation data is estimated from nearby regional stations within a certain distance, and this study compared two dominant methods (modified Angstrom equation and transmittance interpolation method) at six stations in Nakdong River watershed area. Two methods shows a similar level of accuracy but the transmittance interpolation method is likely to be superior in that there is no need for any measurement element since the modified Angstrom equation require the sunshine hour measurement. This study will contribute to improve water resource and water quality management in Nakdong River watershed.

Living Reality of Jjok-Bang Residents and Aid Measures -In Focus of Bupyeong-gu, Incheon

  • Youn, Jung-Hye;Kwon, Hyun-Jin
    • International Journal of Contents
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    • 제9권2호
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    • pp.58-65
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    • 2013
  • The purpose of this study is to investigate the living reality of jjok-bang residents of Sipjeong-dong, Bupyeong-gu, Incheon, and find measures of community social work to support them. Based on the precedent research on jjok-bang's creation, characteristics, and lifestyle of its residents, this study presents the results of an interview survey addressed to 132 residents living in 216 Sipjeong1-dong, Bupyeong-gu, the largest jjok-bang area in Incheon. The research was conducted by ten members of the "Sunshine" Community Center of Sipjeong-dong with constructed questionnaire. Results indicated that 74.2% of the participants were female, and 56.1% aged over 60. Despite the poor living conditions, 77% of them hoped to reside in jjok-bang continually and the most urgent problems to be resolved were housing environment, economic problems such as unemployment and a shortage of welfare facilities. The study emphasizes jjok-bang as a place of home for the residents and advocating both individual and community efforts to ameliorate the local environment of jjok-bang.

Meteorological characteristic and satellite monitoring for red tide in the Korean coasts

  • Yoon, Hong-Joo;Kim, Seung-Cheul
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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    • pp.873-875
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    • 2003
  • It was studied the relationship between the red tide occurrence and the meteorological factors, and the satellite monitoring for red tide. From 1990 through 2001, the red tide continuously appeared and the number of red tide occurrence increased every year. A common condition for the red tide occurrence was heavy precipitation 2${\sim}$4 days earlier, and the favorable conditions for the red tide formation were high air temperature, proper sunshine and light winds for the day in red tide occurrence. From satellite images, it was possible to monitor the spatial distributions and concentrations of red tide.

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Application of Soft Computing Model for Hydrologic Forecasting

  • Kim, Sung-Won;Park, Ki-Bum
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2012년도 학술발표회
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    • pp.336-339
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    • 2012
  • Accurate forecasting of pan evaporation (PE) is very important for monitoring, survey, and management of water resources. The purpose of this study is to develop and apply Kohonen self-organizing feature maps neural networks model (KSOFM-NNM) to forecast the daily PE for the dry climate region in south western Iran. KSOFM-NNM for Ahwaz station was used to forecast daily PE on the basis of temperature-based, radiation-based, and sunshine duration-based input combinations. The measurements at Ahwaz station in south western Iran, for the period of January 2002 - December 2008, were used for training, cross-validation and testing data of KSOFM-NNM. The results obtained by TEM 1 produced the best results among other combinations for Ahwaz station. Based on the comparisons, it was found that KSOFM-NNM can be employed successfully for forecasting the daily PE from the limited climatic data in south western Iran.

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감마선 조사에 의해 제조된 나노-실리카은 유무기복합 입자를 포함한 항진균성 스프레이 제제의 생활환경 저해균에 대한 실용성 검토 (A Test of Antifungal Spray Formulation Containing Nanosized Silica-Silver Particles Prepared by Using Gamma Irradiation for Practical Use to Control Indoor Fungi)

  • 김성호;박해진;김화정;박해준
    • 방사선산업학회지
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    • 제2권3호
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    • pp.149-154
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    • 2008
  • The present study described an antimicrobial spray composition comprising nanosized silica-silver particles, in which nano-silver is bound to silica molecules and a water-soluble polymer, the nanosized silica-silver particles prepared by irradiating a solution comprising a silver salt, silicate and the water-soluble polymer with radiation rays. According to a surfactant addition, the compositions were not turbid and were colorless. Also samples (cotton fabrics and wallpaper) were treated with the compositions also did not cause any stains even after drying under sunshine and at $80^{\circ}C$. Our results suggested that the spray formulation product was of practical use to control indoor fungi.

Vitamin D and Metabolic Diseases: Growing Roles of Vitamin D

  • Park, Jung Eun;Pichiah, Tirupathi;Cha, Youn-Soo
    • Journal of Obesity & Metabolic Syndrome
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    • 제27권4호
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    • pp.223-232
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    • 2018
  • Vitamin D, a free sunshine vitamin available for mankind from nature, is capable to avert many health-related critical circumstances. Vitamin D is no more regarded as a nutrient involved in bone metabolism alone. The presence of vitamin D receptor in a number of tissues implies that vitamin D has various physiological roles apart from calcium and phosphorus metabolism. Low serum vitamin D has been found to be associated with various types of metabolic illness such as obesity, diabetes mellitus, insulin resistance, cardiovascular diseases including hypertension. Various studies reported that vitamin D insufficiency or deficiency in linked with metabolic syndrome risk. This review focuses on various metabolic diseases and its relationship with serum vitamin D status.

태양광을 이용한 LED가로등 시스템을 위한 효율적인 MPPT 충전제어 알고리즘 (A Efficient MPPT Control Algorithm for LED Street Lighting System using Photovoltaic Systems)

  • 김변곤;정동수
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2014년도 추계학술대회
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    • pp.675-676
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    • 2014
  • Photovoltaic (PV) systems bosed on solar energy offer an environmentally friendly source of electricity. A key feature of such PV sysem is the efficiency of conversion at which the power converter stage can extract the energy from the PV arrays and deliver to the load. The Maximum power point tracking (MPPT) of the PV output for all sunshine conditions allows reduction of the cost installation and maximizes the power output from the PV panel. The proposed algorithm is to control the width of the pulse for battery charging based on the open voltage of the PV panel. As a lab results, the proposed system was implemented functions to adapt to the changes of the PV open voltage, and improved the charging efficiency.

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A comparative study of pharmacopoeia between South Korea and North Korea(I)

  • Jang, Seung-Jae;Kang, Chan-Soon;Choi, Bo-Kyung;Kim, Hye-Soo;Choi, Myoeng-Sin;Hong, Chong-Hui;Ki, Yong-Seok;Kim, Sang-Hyun
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.418.2-418.2
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    • 2002
  • With the Sunshine policy. exchange of goods and cultures inter Koreas is broaden and expectancy of reunification is getting higher. Especially. medical supplies and medicines is one of the biggest parts in the exchanges. So. need for preparing new medical administration system for reunification is needed. We are going to compare inter Koreas drug administration system in medical services. (omitted)

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Getting Smart? A Research Note into Smart Tourism Curriculum and Implications on Generation Alpha and Beta

  • Aaron Tham;Husna Zainal Abidin
    • Journal of Smart Tourism
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    • 제3권1호
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    • pp.35-39
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    • 2023
  • This research note probes the largely ignored sphere of smart tourism curriculum as destinations and institutions seek to develop graduates ready to embrace the demands and challenges of future work environments where technology has a ubiquitous presence. This knowledge gap is somewhat surprising, even as destinations progress towards smart tourism futures, without necessarily clarifying what human resources need to possess in the coming decades. Drawing from available smart tourism curriculum across the globe, and emergent trends associated with Generation Alpha and Beta, this research note paints a timely picture of how smart tourism curriculum should be designed and developed to meet the needs of industry and consumer demands and expectations.