نتایج جستجو برای: estimates

تعداد نتایج: 178799  

Abstract. In this note, we give some estimates of the generalized quadrature formula of Gauss-Jacobi type for phi-preinvex functions.

Journal: :iranian journal of science and technology (sciences) 2007
h hamzehloo

the strong ground motions recorded during the 2002 avaj earthquake have been used to estimates wave attenuation, qβ, and spectral decay parameter, κ, for the avaj region. qβ for shear wave is estimatedas a function of frequency in the range of 0.6- 18 hz. the results show that qβ increases with frequency in theform of qβ=62.7 f 0.9. our estimates are within the estimated range for different par...

2011
B. O. Offem G. U. Ikpi

This study compared technical efficiency of mandarin fish and clown fish production in Cross River State, Nigeria. Data were obtained from 240 respondents including 120 mandarin fish farmers and 120 clown fish farmers, which were randomly selected from villages in the study area by means of structured and semi-structured questionnaire. Data collected were analyzed using descriptive statistics a...

1997
John Oliensis

We present a fast, robust algorithm for multi{frame structure from motion from point features which works for general motion and large perspective eeects. Experimental results on synthetic and real sequences show that the algorithm gives results essentially as accurate as the maximum likelihood estimate (MLE) in a couple of seconds on an IRIS 10000 (for 15 images of 30 points). The results are ...

2012
Andrew M. Raim Minglei Liu Nagaraj K. Neerchal Jorge G. Morel

Finite mixture distributions arise naturally in many applications including clustering and classification. Since they usually do not yield closed forms for maximum likelihood estimates (MLEs), numerical methods using the well known Fisher Scoring or Expectation-Maximization algorithms are considered. In this work, an approximation to the Fisher Information Matrix of an arbitrary mixture of mult...

2012
Stanley Xu Chan Zeng Sophia Newcomer Jennifer Nelson Jason Glanz

Conditional Poisson models have been used to analyze vaccine safety data from self-controlled case series (SCCS) design. In this paper, we derived the likelihood function of fixed effects models in analyzing SCCS data and showed that the likelihoods from fixed effects models and conditional Poisson models were proportional. Thus, the maximum likelihood estimates (MLEs) of time-varying variables...

2012
Tommaso Caselli Francesco Rubino Francesca Frontini Irene Russo Valeria Quochi

This paper describes a web-service system for automatic acquisition of verb subcategorization frames (SCFs) from parsed data in Italian. The system acquires SCFs in an unsupervised manner. We created two gold standards for the evaluation of the system, the first by mixing together information from two lexica (one manually created and the second automatically acquired) and manual exploration of ...

2006
PAUL MULLOWNEY SATISH IYENGAR

The Ornstein-Uhlenbeck process has been proposed as a model for the spontaneous activity of a neuron. In this model, the firing of the neuron corresponds to the first-passage of the process to a constant boundary, or threshold. While the Laplace transform of the first-passage time distribution is available, the probability distribution function has not been obtained in any tractable form. We ad...

Journal: :Vector borne and zoonotic diseases 2013
Baek-Jun Kim Su-Jin Kim Jun-Gu Kang Sungjin Ko Sohyun Won Hyewon Kim Heung-Chul Kim Myung-Soon Kim Sung-Tae Chong Terry A Klein Sanghun Lee Joon-Seok Chae

Rodents and soricomorphs are animal hosts of fleas and associated zoonotic microbial pathogens. A total of 4,889 small mammals were collected from Gyeonggi and Gangwon Provinces, Republic of Korea, from 2008 through 2010, including: Apodemus agrarius (4,122, 84.3%), followed by Crocidura lasiura (282, 5.8%), Microtus fortis (257, 5.3%), Myodes regulus (77, 1.6%), Micromys minutus (71, 1.5%), Mu...

Journal: :International journal of epidemiology 2009
Stephen R Cole Haitao Chu Lei Nie Enrique F Schisterman

BACKGROUND In epidemiologic research, little emphasis has been placed on methods to account for left-hand censoring of 'exposures' due to a limit of detection (LOD). METHODS We calculate the odds of anti-HIV therapy naiveté in 45 HIV-infected men as a function of measured log(10) plasma HIV RNA viral load using five approaches including ad hoc methods as well as a maximum likelihood estimate ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید