Results 91 to 100 of about 357,503 (297)

HARDY-WEINBERG EQUILIBRIUM ASSUMPTIONS IN CASE-CONTROL TESTS OF GENETIC ASSOCIATION [PDF]

open access: yes, 2009
The case-control study design is commonly used in genetic association study with a binary trait using unrelated individuals from a population. To test association with a binary trait in a case-control or cohort study, the standard analysis is a chi ...
Lee, Myoungkeun
core  

The Relationship Between Interest Rates and Agricultural Commodity Price Dynamics

open access: yesAgribusiness, EarlyView.
ABSTRACT The U.S. Federal Reserve has undertaken several interest rate interventions in the past decade. This study explores the relationship between U.S. corn and soybean prices and Federal Reserve monetary policy interventions, in the short and long run.
Zhining Sun, Ani L. Katchova
wiley   +1 more source

Australia and New Zealand CER Agreement and Breakpoints in Bilateral Trade: An Application of the Wald-type Test [PDF]

open access: yes
This paper investigates the impact of the Australia-New Zealand Closer Economic Relations (CER) Trade Agreement on bilateral trade of each member country by using historical time series data before and after the implementation of the CER.
Jayanthakumaran, Kankesu   +1 more
core  

Farmers' Participation in Messenger‐Based Social Groups And Its Effects on Performance in Irrigated Areas of Kazakhstan and Uzbekistan

open access: yesAgribusiness, EarlyView.
ABSTRACT The penetration of information and communication technologies (ICTs) in farming communities is increasing the use of smartphone‐based instant messaging apps. Despite this, the reasons behind participation and the impact on farm productivity in developing countries remain unexplored.
Zafar Kurbanov   +4 more
wiley   +1 more source

Discussions on the integrable dynamics of charged particles around Kerr-Newman black holes in combined gravitational and electromagnetic fields

open access: yesPhysics Letters B
There are three types of electromagnetic potentials in Kerr-Newman backgrounds. The first type potential is a self-consistent potential, which was considered by Carter in 1968.
Caiyu Liu, Xin Wu
doaj   +1 more source

Making Wald Tests Work for Cointegrated Systems. [PDF]

open access: yes
Wald tests of restrictions on the coefficients of vector autoregressive (VAR) processes are known to have nonstandard asymptotic properties for 1(1) and cointegrated systems of variables.
Dolado, Juan José, Lüktepohl, Helmut
core  

Examining the Impact of Row Planting on Labor Use for Sustainable Food Production Among Maize Farmers in Rural Ghana

open access: yesAgribusiness, EarlyView.
ABSTRACT Smallholder farmers are reverting to traditional production methods due to the high opportunity costs and unintended consequences of new technologies. This study focuses on row planting technology, which is labor‐intensive and slow without mechanized operations.
Emmanuel Tetteh Jumpah   +4 more
wiley   +1 more source

One statistical test is sufficient for assessing new predictive markers

open access: yesBMC Medical Research Methodology, 2011
Background We have observed that the area under the receiver operating characteristic curve (AUC) is increasingly being used to evaluate whether a novel predictor should be incorporated in a multivariable model to predict risk of disease.
Begg Colin B   +2 more
doaj   +1 more source

Posterior-based Wald-type statistics for hypothesis testing

open access: yesJournal of Econometrics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
LI, Yong   +3 more
openaire   +3 more sources

Effects of Environmental and Health Information on Willingness to Pay for Local and Organic Foods in Taiwan

open access: yesAgribusiness, EarlyView.
ABSTRACT Using a lab‐in‐the‐field experiment, we investigate how providing information about food miles and pesticide residue influences willingness to pay (WTP) for potatoes among 407 shoppers in Taiwan, split between a supermarket and a farmers market.
Chiu‐Lin Huang   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy