• Title/Summary/Keyword: Fisher 분포

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다변량 자료의 분산균일성 검정-피트만 방법의 확장-

  • 허명회;양경숙
    • Communications for Statistical Applications and Methods
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    • v.4 no.1
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    • pp.41-47
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    • 1997
  • 본 연구의 목적은 p변량 관측지가 등상관구조를 갖는 경우 주변분산들의 균일성을 검정하는 통계적 절차를 개발하는 것이다. 이를 위하여 2변량의 경우에 적용되는 피트만(Pitman)의 방법을 3변량 이상의 경우로 확장하고 피셔(Fisher)의 임의화 검정을 적용하여 정규분포의 틀에 의존하지 않는 p 값을 산출한다.

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New Method for Combining P-values in Meta-Analysis (메타분석에서 새로운 P-Value 결합 방법)

  • Seon, Jeongyeon;Kim, Dongjae
    • The Korean Journal of Applied Statistics
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    • v.26 no.5
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    • pp.797-806
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    • 2013
  • Meta-analysis is used in variety of areas to synthesize the results of previous studies. Among the methods for Meta-analysis, combining p-values is the simplest method; in addition Tippett (1931), Fisher (1932), Stuoffer at al. (1949), proposed various methods to combine p-values. We propose a new method to combine p-values based on exponential distribution. A Monte Carlo simulation study compares the power of the proposed methods with previous methods.

Gelechiidae (Lepidoptera) flout Changbai-san in China (중국 백두산 (백두산)의 뿔나방과 (나비 목))

  • Park, Kyu-Tek;Lee, Jun-Seok;Longshi Lu
    • Korean journal of applied entomology
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    • v.39 no.4
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    • pp.239-244
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    • 2000
  • During 1999~2000 expedition to Mt. Changbai-san in China, twenty species of Gelechiidae were recognized. Most of the species, except Anacampsis popullela (Clerk), are known for the first time from Mt. Changbai-san, and nine species are newly known from China. Scrobipalpa atriplicella (Fisher and Roslerstamm) and Anarsia lineatella (Zeller) are unknown species from the Korean Peninsula. A new combination, Carpatolechia dehania (Park, 1993), comb. nov. is given.

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Disease, Accident and Health Behavior of in Farmers and Fishermen (농림어업인의 상병실태 및 건강행태 분석)

  • Kim, Kyung-Ran;Choi, Jeong-Wha
    • Journal of agricultural medicine and community health
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    • v.30 no.3
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    • pp.279-292
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    • 2005
  • Objectives: The purpose of this study is to analyze agricultural accident and disease using statistical data and materials about National Survey for Health & Nutrition in 2001 and to provide fundamental materials for studies about farmers' health and safety, decision of priority about research and policy. Results: Diagnosed chronic disease prevalence is 72.4% in farmer/fisher group, 49.8% in non farmer/fisher group. The chronic disease prevalence of musculoskeletal disease, circulatory disease, and gastroenteric disease is 46.5%, 18.2%, and 17.9% in farmer/fisher group respectively. The prevalence of musculoskeletal disease in farmer/fisher is 2.4 times higher than non farmer/fisher. This result shows that it need to evaluation for risk factors of musculoskeletal disease preferentially. Lifetime accident/poisoning rate is 18.2% In farmer/fisher group and 13.3% in non farmer/fisher group. The types of accidents were fracture>sprain>contusion and the reasons of accidents were traffic accident>falling/sliding. Conclusions: "Bad or very bad" response of farmer/fisher is almost 2 times higher than non farmer/fisher group. The rate of smoking and no exercising in farmer/fisher group is higher than non farmer/fisher group.

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A Systematic Study on the Asteroidea in the East Sea, Korea (한국 동해산 해성류의 계통분류학적 연구)

  • Sook Shin
    • Animal Systematics, Evolution and Diversity
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    • v.11 no.2
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    • pp.243-263
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    • 1995
  • Twenty-nine species of asteroids are reported to be distributed in the East Sea of Korea. Five species are reported to be distributed in the East Sea of Korea. Five speices are reported for the first time in Korea ; Solaster endeca (Linn, 1771), Lethasterias fusca D'yakonov, 1931, Lethasterias nanimensis chelifera (verrill, 1914), Lysastrosoma anthostictha Fisher, 1992 and Evasterias troscheli alveolata Verrill, 1914. The faunal composition and distribution of the asteroids in the East Sea of Korea are discussed.

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Determination of Optimal Locations for Measuring Displacements to Adjust Cable Tension Forces of Cable-Stayed Bridges (사장교 시공 중 케이블 장력 보정을 위한 최적 변위계측 위치 결정)

  • Shin, Soobong;Lee, Jung-Yong;Kim, Jae-Cheon;Jung, Kil-Je
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.13 no.2 s.54
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    • pp.129-136
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    • 2009
  • The paper presents an algorithm of selecting optimal locations for measuring displacements(OLD) to adjust cable tension forces during the construction of cable-stayed bridges. The rank for optimal locations can be determined from the effective independence distribution vectors(EIDV) that are computed from the Fisher Information Matrices(FIM) formulated with the displacement sensitivities. To examine the efficiency and reliability of the proposed algorithm for determining OLD, a simulation study on a cable-stayed bridge has been carried out. The results using FIM formulated with displacements are compared with those using FIM with displacement sensitivities through the simulation study. The effects of measurement noise and error in cable length on the adjustment of cable tension forces are evaluated statistically by applying the Monte Carlo scheme.

Skin and non-skin color separability enhancement based on Average Neighborhood Margin Maximization (ANMM(Average Neighborhood Margin Maximization)에 기반한 피부색과 비피부색 분리력 향상 기법)

  • Ban, Yuseok;Lee, Sangyoun
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2011.07a
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    • pp.6-7
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    • 2011
  • 본 논문에서는 지역적 학습 방법을 활용하는 Average Neighborhood Margin Maximization(ANMM)에 기반하여 피부색과 비피부색 영역을 분리하는 이진 분류의 통계적 접근법을 제안한다. Fisher Linear Discriminant(FLD)와 Average Neighborhood Margin Maximization(ANMM)의 피부색과 비피부색 클래스 내 분산 대비 클래스 간 분산의 비교를 통해 두 클래스 간 분리력 변화를 확인한다. 교사(Supervised) 이진 분류문제에 대하여 Small sample size(SSS) 문제, 가우시안 분포 가정의 문제, 최대 추출 가능 특징 수 제한 문제 등을 해결함과 동시에, 지역적 특성 학습 방법의 도입을 통해 피부색과 비피부색 간 분리력을 향상시킨다.

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Floristic Composition and Vertical Distribution of Mt. Daesun (대둔산 식물의 분류학적 특성과 수직분포)

  • Cho, Joong Bae;Bong-Seop Kil
    • The Korean Journal of Ecology
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    • v.10 no.2
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    • pp.53-62
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    • 1987
  • Floristic composition and vertical distribution of Mt. Daedun (western slope) were investigated from 1985 to 1986. The results are as follows; 108 families, 346 genera, 511 species, 2 subspecies, 75 varieties, 5 forma or 593 taxa including 77 cultivars. The floral data showed the ecological characteristics such as the value 346 in Fisher's Index, H-D1-H5 in biological type, 10.9% in urban index of naturalized plants and 60.5% in erect form growth form. Based on the physiognomy and population density of dominant tree species the forest vegetation of Mt. Daedun (western slope) was classified into 5 types; Quercus mongolica forest and Q. variabilis forest at 800m above, Carpinys laxiflora forest and Acer mono forest at 700m to 800m and Sapium japonicum forest at 500m to 800m in altitude. And Lindera erythrocarpa forest and zelkova serrata forest are widely distributed at 400m to 800m in altityde along valley and at mountain foot area.

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Tiger Beetles(Carabidae, Cicindelinae) of Korea (한국산 길앞잡이 (딱정벌레목, 딱정벌레과))

  • Kim, Tae-Heung;Paik, Jong-Cheol;Jeong, Kyu-Hwan
    • The Korean Journal of Soil Zoology
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    • v.10 no.1_2
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    • pp.1-15
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    • 2005
  • Tiger Beetles(Carabidae, Cicindelinae) were collected in the Province of Chollabukdo including some nearby islands from April 1997 to October 2002. The specimens of ca. 500 deposited in Sunchon National University, Chonbuk National University, the Jeju Folklore and Natural History Museum, and elsewhere were also examined. As a result, Korean Cicindelinae of 18 species from 10 subgenera is reported herein. Of these, Cicindela (Cylindera) obliquefasciata Adams, 1817 and Cicindeia (Cephalota) chiloleuca Fisher, 1820 are recorded newly in the Korean Peninsula. However, the distribution of C. japana is very doubtful in South Korea. This study also includes a key to the species, discussions on the habitats, distributions, and some ecological characteristics of Korean Cicindelinae.

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A Case Study on Stochastic Fracture Network Modeling for Rock Slopes of Busan-Ulsan Highway(Reach 5) (부산-울산 고속국도(5공구)에 위치한 암반사면의 추계론적 절리연결구조 모사에 대한 사례연구)

  • Heo, In-Sill;Um, Jeong-Gi;Kim, Yang-Phil;Kim, Kook-Han;Lee, Young-Kyun
    • The Journal of Engineering Geology
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    • v.16 no.4 s.50
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    • pp.337-349
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    • 2006
  • Seven hundred and fifty one fractures of the rhyolitic tuffaceous rock masses were mapped using 6 scanlines placed on rock slope exposures that were within 8.02 km of Busan-Ulsan highway. These data were analyzed to find the number of fracture sets that exist in the rock slopes and the probability distributions of orientation, spacing, trace length and fracture size in 3-D for each of the fracture sets. All the fracture set orientation distributions exhibit high variability. The Fisher distributions were found to be unsuitable to represent the statistical distribution of orientation for most of the fracture sets. The probability distributions, gamma, exponential and lognormal were found to be highly suitable to represent the distribution of spacing and semi-trace length of fracture sets. In obtain-ing these distributions, corrections were applied for sampling biases associated with spacing and trace length. The generated fracture system in 3-D was used to make predictions of fracture traces for each fracture set on 2-D win-dows. Developed stochastic 3-D fracture network for the rock mass was validated by comparing statistical proper-ties of the observed fracture traces on scanlines with the predicted fracture traces on the scanlines. This exercise fumed out to be successful.