Results 101 to 110 of about 4,672,682 (301)

Rational Expectations and Market Timing: An Event Study of the China–United States Phase One Trade Deal

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Rational actors constantly incorporate information into their decision‐making behavior. Since there is often a time lag between the announcement of a policy and its implementation, an important question arises: when do rational actors incorporate new information into their market behavior, at the announcement or at the implementation of a ...
Tim Ölkers, Oliver Mußhoff
wiley   +1 more source

Support for a reciprocal effects model of self-concept and academic achievement through a contrast of multidimensional and unidimensional approaches

open access: yes, 2006
There is a longstanding debate in the self-concept literature surrounding the causal ordering of self-concept and academic achievement. Some researchers have argued that self-esteem has no positive impact upon performance (Baumeister, Campbell, Krueger &
Marsh, Herbert W., O'Mara, Alison J.
core  

A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success [PDF]

open access: yes, 2013
Engqvist L. A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success. Evolution.
Engqvist, Leif   +1 more
core   +1 more source

Farmers' Preferences for Fossil‐Free Mineral Nitrogen Fertilizers: Role of Prices, Climate, Production Origin, and Identity

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Disruptions in global fertilizer markets and climate targets have increased interest in fossil‐free mineral nitrogen fertilizers. This study examines farmers' preferences for conventional (fossil‐based) and fossil‐free fertilizers using a labeled discrete choice experiment with 211 Swedish farmers.
Nasir Adam   +5 more
wiley   +1 more source

Reproductive differences among species, and between individuals and cohorts, in the leech genus Helobdella (Lophotrochozoa; Annelida; Clitellata; Hirudinida; Glossiphoniidae), with implications for reproductive resource allocation in hermaphrodites.

open access: yesPLoS ONE, 2019
Leeches and oligochaetes comprise a monophyletic group of annelids, the Clitellata, whose reproduction is characterized by simultaneous hermaphroditism. While most clitellate species reproduce by cross-fertilization, self-fertilization has been described
Roshni G Iyer   +4 more
doaj   +1 more source

Farmers’ Protests in Germany: Media Coverage and Types of Bias

open access: yesAgribusiness, EarlyView.
ABSTRACT The German farmers’ protests of 2024 sparked widespread media coverage and public debate. Yet, media coverage was not always positive, reflecting the media's attention‐seeking and selective focus. Occurrences of farmers blocking media outlets reflected distrust in how their concerns were portrayed.
Felix Schlichte, Doris Läpple
wiley   +1 more source

Quality of plant products grown with manure fertilization [PDF]

open access: yes, 1996
The meeting discussed results of food quality obtained by different long-term trials in Switzerland (DOC trial), Germany (Darmstadt) and Sweden (K trial etc.).

core   +1 more source

Self-Fertile Sweet Cherries

open access: yesJournal of the American Pomological Society, 1967
Self-fertility in sweet cherries is of practical interest because of the advantages that would be gained from the elimination of pollinator varieties from orchards-although the presence of bees and/or other insects would still be necessary for effective pollination.
P. Matthews, K. Lapins
openaire   +1 more source

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