Results 51 to 60 of about 8,441,002 (391)

Calibration and Evaluation of Different Estimation Models of Daily Solar Radiation in Seasonally and Annual Time Steps in Shiraz Region

مجله آب و خاک, 2017
Introduction: Solar radiation on the earth surface has a wide range of applications in hydrology, agriculture and meteorology. Solar radiation is an important parameter of estimated models of reference crop potential evapotranspiration such as the Penman–
Hamid Reza Fooladmand, Farzaneh Karimi
doaj   +1 more source

New prediction models for gross energy of pig urine using urinary nitrogen concentration and body weight: technical note [PDF]

Animal Bioscience
The objectives were to evaluate previous equations for estimating gross energy (GE) of pig urine using urinary nitrogen (N) and to develop novel equations for estimating GE concentrations of pig urine. A total of 136 urine samples were obtained from pigs
Hyunseok Do, Bokyung Hong, Jeonghyeon Son, Noa Park, Beob Gyun Kim   +4 more
doaj   +1 more source

Time-Invariance Estimating Equations [PDF]

Bernoulli, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

Population Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa, Andrea Costa, Sebastiano Salvidio   +2 more
wiley   +1 more source

Computational algebraic methods in efficient estimation

, 2014
A strong link between information geometry and algebraic statistics is made by investigating statistical manifolds which are algebraic varieties. In particular it it shown how first and second order efficient estimators can be constructed, such as bias ...
AP Dawid, B Efron, B Huber, DQ Naiman, G Pistone, H Gehrmann, H Weyl, J Verschelde, RC Rao, S Amari, S Andersson, S Kuriki, TL Lee, TY Li   +13 more
core   +1 more source

Solving some special cases of monomial ratio equations appearing frequently in physical and engineering problems [PDF]

, 2016
We first show that monomial ratio equations are not only very common in Physics and Engineering, but the natural type of equations in many practical problems. More precisely, in the case of models involving scale variables if the used formulas are not of
Castillo Ron, Enrique, Lozano Galant, José Antonio, Nogal Macho, María, Turmo Coderque, José   +3 more
core   +4 more sources

The Structure of Simultaneous Equations Estimators

Journal of Econometrics, 1976
AbstractOptimal estimation is necessary for empirical modelling, but can be summarized in an estimator generating equation (EGE). The EGE reduces a vast literature on estimating individual equations and linear simultaneous systems to a single, simple expression based on the ‘score’, namely, the first derivative of the log‐likelihood function for full ...
openaire   +6 more sources

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

Population Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source

An Adaptive Management Model for Brown Bears in Hokkaido: Based on Total Population and the Number of Nuisance Bears

Population Ecology, EarlyView.
Bear management changes management actions according to the horizontal axis of the population size and the vertical axis of the number of nuisance bears. Aiming for the target population size of Ntar, Actions I and II protect the bears, and Action IV reduces the population.
Hiroyuki Matsuda, Akira Maki, Tsutomu Mano, Hifumi Tsuruga, Hino Takafumi, Shinichi Horino   +5 more
wiley   +1 more source

Thermostable neutral metalloprotease from Geobacillus sp. EA1 does not share thermolysin's preference for substrates with leucine at the P1′ position

FEBS Letters, EarlyView.
Knowing how proteases recognise preferred substrates facilitates matching proteases to applications. The S1′ pocket of protease EA1 directs cleavage to the N‐terminal side of hydrophobic residues, particularly leucine. The S1′ pocket of thermolysin differs from EA's at only one position (leucine in place of phenylalanine), which decreases cleavage ...
Grant R. Broomfield, Torsten Kleffmann, David J. Saul, Sigurd M. Wilbanks   +3 more
wiley   +1 more source