• Title/Summary/Keyword: Weather Information

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Phase Noise Effects on the Pulse Pair Spectrum Moment Estimates in a Doppler Weather Radar

  • Lee, jong-Gil
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.26 no.7B
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    • pp.951-956
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    • 2001
  • A weather radar usually extracts the necessary information from the return Doppler spectrum moment estimates. Phase stability is a very important factor in obtaining accurate and reliable information in a Doppler weather radar system since the system phase noise may seriously degrade the weather spectrum moment estimation quality. These spectrum moment estimates are commonly obtained using the pulse pair method which is simple to implement and fast enough to process an enormous amount of weather radar data in real time. Therefore, an analytical method is developed in this paper to analyze and quantify the phase noise effects on the pulse pair spectrum moment estimates in terms of the phase noise power and broadness.

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Design and Implementation of Android-based Total Weather Information Application using XML Parsing Techniques (XML 파싱기법을 이용한 안드로이드 기반의 종합 날씨 정보 앱 설계 및 구현)

  • Lee, Jin-Wook;Yueon, Hyoung-Soo;Ha, Soo-Cheol
    • Journal of Digital Contents Society
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    • v.12 no.4
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    • pp.611-618
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    • 2011
  • This paper presents a design and implementation of Android-base Total Weather Information using XML(eXtensible Markup Language) techniques. Weather Information are changed using GPS location provider and XML parsing techniques according to the current location, This application alarms the weather information as the English voices when some alarm events appear regardless of the application access or finish. We design the user interface simple because the first impression is important in all applications.

Survey on the Utilization of Weather and Air Quality Information and Needs of Patients with Respiratory Diseases (호흡기질환자의 기상 및 대기질 정보 활용현황과 요구도 조사)

  • Jo, Eun-Jung;Park, Hye-Kyung;Kim, Chang-Hoon;Won, Kyung-Mi;Kim, Yoo-Keun;Jeong, Ju-Hee;An, Hye Yeon;Hwang, Mi-Kyoung
    • Journal of Environmental Science International
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    • v.28 no.1
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    • pp.85-97
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    • 2019
  • Meteorological factors and air pollutants are associated with respiratory diseases, and appropriate use of weather and air quality information is helpful in the management of patients with such diseases. This study was performed to investigate both the utilization of weather and air quality information by, and the needs of, patients with respiratory diseases. Questionnaires were administered to 112 patients with respiratory diseases, 60.7% of whom were female. The rates of bronchial asthma and chronic obstructive pulmonary disease among patients were 67.0% and 10.7%, respectively. The majority of subjects (90%) responded that prevention was important for respiratory disease management and indicated that they used weather and air quality information either every day or occasionally. However, respondents underestimated the importance of weather and air quality information for disease management and were unaware of some types of weather information. The subjects agreed that respiratory diseases were sensitive to weather and air quality. The most important weather-related factors were diurnal temperature range, minimum temperature, relative humidity, and wind, while those for air quality were particulate matter and Asian dust. Information was gleaned mainly from television programs in patients aged 60 years and older and from smartphone applications for those below 60 years of age. The subjects desired additional information on the management and prevention of respiratory diseases. This study identified problems regarding the utility of weather and air quality information currently available for patients with respiratory diseases, who indicated that they desired disease-related information, including information in the form of action plans, rather than simple health- and air quality-related information. This study highlights the necessity for notification services that can be used to easily obtain information, specifically regarding disease management.

Pilot Study of Application Status for the Improvement of Weather Information in the Korean Peninsula: Focus on Extreme Heat Watch and Warnings

  • Park, Jong-Kil;Jung, Woo-Sik;Oh, Jina;Kim, Eun-Byul;Choi, Su-Jin
    • Asian Journal of Atmospheric Environment
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    • v.8 no.3
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    • pp.140-153
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    • 2014
  • The extreme heat watch and warnings (EHWW) which is constructed as a part of the climate change adaptation took effect in the summer of 2008, but active response actions failed to be taken because of low perception among citizens. Therefore, a survey investigation targeting citizens residing in Busan and the Gyeongnam province was conducted in order to know the perception regarding EHWW issued by the Korea Meteorological Administration, to identify the main media through which information is acquired, and to propose an improvement measures which may enhance the usefulness and the degree of satisfaction of weather information. The results are as follows; The perception regarding EHWW was not very high as it remained at 59.8% in terms of percentile. Although the statistical significance was not fulfilled in the categories of gender or occupation, significant differences did exist among age groups. The main medium through which citizens acquired information regarding EHWW was the television, which was followed in order by the internet, acquaintances, short message service (SMS), radio, newspapers, the 131 weather hotline, and other media. The usefulness of EHWW was somewhat high (67.2%), and female students were found to utilize the information to a higher degree than male students. The statistics on the level of satisfaction regarding the weather information (65.4%) revealed that most respondents were satisfied. Housewives, professional, and the elder age groups exhibited great satisfaction, leading to the conclusions that the level of perception and interest regarding to the special weather reports (SWR) have an impact on satisfaction of SWR.

Development of a weather information visualization system on Android (안드로이드상의 날씨 시각정보화 시스템 개발)

  • Hwang, Sung-Mun;Lee, Hyo-Sung;Park, Seung-Hyun;Kim, Ju-Young;Kim, Tae-Suk
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2010.05a
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    • pp.913-916
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    • 2010
  • This study has been developed in order to provide a visualization of weather information system that users are capable of effective understanding on Android. The visualization of weather information is not expressed by number. It is the easiest way to express information with two or three dimensional of media based on the temperature, wind, rain, yellow dust, thunderstorm and amount of sunshine. What here shows, is by targeting current weather, weekly-weather and particular day's weather which is exactly same as general weather expression and informed by Google API. Now, let's examine how to analyze Android in order to manage it. That users are capable of effective understanding of weather information on Android.

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Development of the Road Weather Detection Algorithm on CCTV Video Images using Double Decision Trees (이중결정트리를 이용한 CCTV영상에서의 도로 날씨정보검출알고리즘 개발)

  • Park, Beung-Raul;NamKoong, Sung;Lim, Joong-Tae
    • The KIPS Transactions:PartB
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    • v.14B no.6
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    • pp.445-452
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    • 2007
  • We proposed a detection scheme of weather information in CCTV video images in this paper. The scheme obtains the RGB distribution of shiny day and divide a target image into cloud, rain, snow and for RGB distributions. shiny day RGB distribution. Our scheme designed systematically to detection and separation special characteristics of images from complex weather information. Our algorithm has less overhead than the previous methods to use weather database DB at the view of time and space. And our algorithm can be use in real world system with low cost of implementation. Also, our algorithm use informations of temperature, humidity, date, and time to detect the information of weather with high quality.

Status of Agrometeorology Monitoring Network for Weather Risk Management: Focused on RDA of Korea (위험기상 대응 농업기상관측 네트워크의 현황: 농촌진흥청을 중심으로)

  • Shim, Kyo Moon;Kim, Yong Seok;Jeong, Myung Pyo;Choi, In Tae;So, Kyu Ho
    • Journal of Climate Change Research
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    • v.6 no.1
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    • pp.55-60
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    • 2015
  • Agro-Meteorological Information Service (AMIS) network has been established since 2001 by Rural Development Administration (RDA) in Korea, and has provided access to current and historical weather data with useful information for agricultural activities. AMIS network includes 158 automated weather stations located mostly in farm region, with planning to increase by 200 stations until 2017. Agrometeorological information is disseminated via the web site (http://weather.rda.go.kr) to growers, researchers, and extension service officials. Our services will give enhanced information from observation data (temperature, precipitation, etc.) to application information, such as drought index, agro-climatic map, and early warning service. AMIS network of RDA will help the implementation of an early warning service for weather risk management.

Information System for Agricultural Weather and Disease and Insect Pest Management for Rice Growers in Gyeonggi-do, Korea (경기도 벼 재배 농가를 위한 농업기상 및 병해충예찰 정보시스템)

  • 홍순성;강위수;조성인;김진영;박경렬;한용규;박은우
    • Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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    • 2003.09a
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    • pp.87-87
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    • 2003
  • The Gyeonggi-do Agricultural Research and Extension Services has developed a web-site (http://www.epilove.com) in collaboration with EPINET to provide information on agricultural weather and rice disease and insect pest management in Gyeonggi-do. Weather information includes near real-time weather data monitored by automated weather stations (AWS) installed at rice paddy fields of 11 Agricultural Technology Centers (ATC) in Gyeonggi-do, and weekly weather forecast by Korea Meteorological Administration (KMA).(omitted)

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Internet-based Information System for Agricultural Weather and Disease and Insect fast management for rice growers in Gyeonggi-do, Korea

  • S.D. Hong;W.S. Kang;S.I. Cho;Kim, J.Y.;Park, K.Y;Y.K. Han;Park, E.W.
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 2003.10a
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    • pp.108.2-109
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    • 2003
  • The Gyeonggi-do Agricultural Research and Extension Services has developed a web-site (www.epilove.com) in collaboration with EPINET to provide information on agricultural weather and rice disease and insect pest management in Gyeonggi-do. Weather information includes near real-time weather data monitored by automated weather stations (AWS) installed at rice paddy fields of 11 Agricultural Technology Centers (ATC) in Gyeonggi-do, and weekly weather forecast by Korea Meteorological Administration (KMA). Map images of hourly air temperature and rainfall are also generated at 309m x 309m resolution using hourly data obtained from AWS installed at 191 locations by KMA. Based on near real-time weather data from 11 ATC, hourly infection risks of rice blast, sheath blight, and bacterial grain rot for individual districts are estimated by disease forecasting models, BLAST, SHBLIGHT, and GRAINROT. Users can diagnose various diseases and insects of rice and find their information in detail by browsing thumbnail images of them. A database on agrochemicals is linked to the system for disease and insect diagnosis to help users search for appropriate agrochemicals to control diseases and insect pests.

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A study on the design of customized coastal weather contents based on the demand survey with coastal industry fields (연안산업 분야별 수요조사를 통한 맞춤형 연안기상 콘텐츠 설계방안 연구)

  • Kim, Hyunsu;Kim, Yoo-Keun;Song, Sang-Keun;Jeong, Ju-Hee;Son, Go-Eun;Kim, Dong-Sik;Kim, Hyung-Sop;Kim, Ji-Won
    • Journal of Environmental Science International
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    • v.22 no.4
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    • pp.481-492
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    • 2013
  • In this study, the use survey of domestic and international weather information on coastal regions and the demand survey (e.g. general and in-depth surveys) for customer needs with coastal industries were carried out to design customized coastal weather contents. The general demand survey showed that most of the customers working in the coastal industries were interested in a short-term forecast, such as a general weather outlook (approximately 29% of the total respondents) and typhoon information (19%), and they preferred to be given the forecast information from new media such as the internet web-pages (36%) and mobile utilities (23%) rather than old media such as TV (16%) and radio (11%). In addition, only 31% of the total respondents were found to be satisfied with the use of the current coastal weather service. This low percentage might mainly be a result of lack of information accuracy (about 64%) and diversity (28%). From in-depth survey with site visiting, the need of coastal weather contents, such as weather elements, data form, a tool of communication, and forecast interval, differed with the working stages in three coastal industries (e.g. shipbuilding, maritime trade, and passenger transport industries).