• Title/Summary/Keyword: Research Survey

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Hematological Survey on Hematozoa of Cattle in Korea (국내 소의 주혈원충(住血原蟲)과 그 혈액학치에 관한 조사 연구)

  • Jeon, Y.
    • Korean Journal of Veterinary Research
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    • v.10 no.2
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    • pp.81-87
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    • 1970
  • This survey was conducted to observe the relationships between hematozoa and hematological values among cattle. The genus of hematozoa were Anaplasma spp., Babesia spp., Eperythrozoon spp. and Theileria spp. The anemia of dairy cattle was more severe than that of Korean native cattle.

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Hydroacoustic Survey of Spatiotemporal Stability and Distribution of Demersal Fish Aggregations in the Coastal Region (수산 음향 기법을 이용한 연안 저서 어군의 시.공간 분포 및 안정성 조사)

  • Kang, Dong-Hyug;Lee, Chang-Won;Cho, Sung-Ho;Myoung, Jung-Goo
    • Ocean and Polar Research
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    • v.30 no.1
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    • pp.79-87
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    • 2008
  • Hydroacoustic technique was used to analyze spatiotemporal stability and distribution of demersal fish aggregations in the coastal region to overcome some limitations of the existing methods such as net and diving. The survey was carried out in the Baekeum Bay on the south coast of Korea in January 2007. The bottom depth in the study site ranges from 7 to 25 m. In order to outline aggregations of demersal fish initial scanning using 200 kHz split-beam transducer was randomly conducted over the large area. Having detected fish aggregation in the specific region, intensive acoustic survey of irregular star pattern was carried out along 14 transects across the area in question. The results of the acoustic survey show that all demersal fish aggregations are concentrated about 5 m from sea bottom having a slight slope and remain steady with no spatial or temporal variations during acoustic survey. The hydroacoustic method used in this study offers a new approach to understand vertical and horizontal distribution, spatiotemporal stability, and biomass estimate of demersal fish aggregations in coastal regions. Additionally, the number of individual fish estimated from in situ acoustic target strength data can be used to understand the standing stock of demersal fish aggregation.

Hydro-acoustic survey on fish distribution and aggregated fish at artificial reefs in marine ranching area (음향조사기법을 이용한 수산자원 관리수면의 어류분포 및 인공어초지역의 어군위집조사)

  • Kim, Hyun-Young;Hwang, Bo-Kyu;Lee, Yoo-Won;Shin, Hyeon-Ok;Kwon, Jung-No;Lee, Kyung-Hoon
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.47 no.2
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    • pp.139-145
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    • 2011
  • Hydro-acoustic survey was carried out to estimate a fish distribution at marine ranching area and aggregated fish schools at artificial reef area in Oeyeondo, Korea. The survey system was set up with DGPS system, scientific echo sounder (EK60, Simrad Co.), and ECDIS (Mecys. Co. LTD). A track survey and a random survey was respectively applied to the marine ranching area (474.4ha) and to the artificial reef area (within a radius of 300m). As the result, fish distribution and MVBS values in marine ranching area showed that created fisheries resources didn't come to be abundant yet as to appear fish distribution in all of the area. In the artificial reef area, it was, however, able to detect many fish school signals on the top of and around artificial reefs and to confirm the luring effect of artificial reefs.

Formulation of the Scope and Key Questions of the Guideline Recommendations for Immunosuppressive Treatment in Kidney Transplantation (신장이식 면역억제요법 가이드라인 개발을 위한 권고안 적용 범위 및 핵심질문 선정)

  • Huh, Seungyeon;Han, Nayoung;Sohn, Minji;Ryu, Junghwa;Yang, Jaeseok;Oh, Jung Mi
    • Korean Journal of Clinical Pharmacy
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    • v.29 no.1
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    • pp.18-24
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    • 2019
  • Background: Although a growing number of guidelines and clinical researches are available for immunosuppressive treatment of post-transplantation, there is no clinical practice guideline for the care of kidney transplant recipients in Korea. Selection of a researchable question is the most important step in conducting qualified guideline development. Thus, we aimed to formulate key questions for Korean guideline to aid clinical decision-making for immunosuppressive treatment. Methods: Based on previous published guidelines review, a first survey was constructed with 29 questions in the range of immunosuppressive treatments. The experts were asked to rate the clinical importance of the question using a 5-point Likert scale. The questions reached 60% or more from the first survey and additional new questions were included in the second survey. In analyzing the responses to items rated on the 9-point scale, consensus agreement on each question was defined as 75% or more of experts rating 7 to 9. Results: In the first survey, 50 experts were included. Among the 29 questions, 27 were derived to get 60% or more importance and 3 new questions were additionally identified. Through the second survey, 9 questions were selected that experts reached consensus on 75% and over of the options. Finally, we developed key questions using PICO (patient, intervention, comparison, and outcome) methodology. Conclusion: The experts reached a high level of consensus on many of key questions in the survey. Final key questions provide direction for developing clinical practice guideline in the immunosuppressive treatment of transplantation.

Numerical simulation study on applicability of electrical resistivity survey at tunnel face (터널 굴착면에서의 전기비저항 탐사 적용성에 관한 수치해석 연구)

  • Yi, Myeong-Jong;Kim, Nag-Young;Lee, Sangrae;Hwang, Bumsik;Ha, Myung Jin;Kim, Ki-Seog;Cho, In-Ky;Lee, Kang-Hyun
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.24 no.3
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    • pp.279-292
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    • 2022
  • Unexpected anomalies in the geotechnical investigation at design stage may cause problems during tunnel excavation. Therefore, it is important to predict the ground condition ahead of a tunnel face during tunnel excavation in order to prevent tunnel collapse. Despite the fulfillment of an electrical resistivity survey at the tunnel face, the existing electrical resistivity survey program can produce distorted results by the limitation of tunnel modelling. In this background, this study develops a modelling program for an electrical resistivity survey considering the tunnel shape. Numerical simulation and inverse calculation were performed for the electrical resistivity survey in the tunnel using the developed program. As a result, it was proved that the developed program could predict accurately the anomalous object's location and condition ahead of the tunnel face.

Development of an Integrated Management System for Data Survey of Cadastral Surveying (지적측량 자료조사 통합관리시스템 구축)

  • Choi, Jung Ju;Hong, Sung Eon;Park, Soo Hong
    • Journal of Korean Society for Geospatial Information Science
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    • v.21 no.1
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    • pp.77-86
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    • 2013
  • This study presents a plan to develop a integrated management system for data survey of cadastral surveying to efficiently manage and research cadastral survey data. As a result of analysis of the existing cadastral survey data used to evaluate efficiency of the developed integrated cadastral survey data management system, it was shown that data survey time can be reduced by approximately half.

Internet Survey Methodology

  • Lee, Hae-Yong;Kim, Kee-Whan
    • Communications for Statistical Applications and Methods
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    • v.7 no.3
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    • pp.945-953
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    • 2000
  • Since early 1960s, when the telephone survey was used in the research area for he first tie, there has been existed various methods to gather the information by survey. The existing survey methodology called PAPI(Paper-And-Pen Interveiw), due to the appearance of Personal Computer, might well be developed progressively. Mid-1980s, Internet was advanced remarkably in terms of technology. from early 1990s, in addition it served as a stepping-stone for progressive collecting method. Internet Survey is now called WWW Survey and expected that it will substitute for most surveys from now on. We explain the role and the characteristics for Internet Survey as one of he various data collecting methods. Furthermore, we draw the futures about questionnaires, data collecting and statistical analysis with it.

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Factors Affecting the Accuracy of Internet Survey (인터넷 여론조사의 정확도 관련요인)

  • Cho, Sung-Kyum;Joo, Young-Soo;Cho, Eun-Hee
    • Survey Research
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    • v.6 no.2
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    • pp.51-74
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    • 2005
  • The internet survey methods have been more and more widely used as the coverage of the fixed-line telephone is being reduced due to the diffusion of mobile phone. So, there is a need to know the accuracy of this new survey method. This study aims to estimate the accuracy of the internet survey method and identify the factors affecting the accuracy of this method, For this purpose, we analyzed the election poll data during the 17th general election period. These data include fixed-line telephone survey data, internet survey data, mobile phone survey data and the election voting data. The analysis shows that the prediction errors of the internet survey were a little more than those of the telephone or mobile phone survey. But the differences are not significant. It follows from this result that we can use the internet survey method in social survey context. This study also found that the respondent's willingness to participate in the survey, the probability of being at home during survey and the respondent's educational level were affecting the accuracy of the internet survey. Further studies to develop weighting method with these factors are needed.

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