Results 21 to 30 of about 23,294 (217)

Astrometry Lost and Regained

open access: yesOpen Astronomy, 2011
Technological and scientific developments during the past century made a new branch of astronomy flourish, i.e. astrophysics, and resulted in our present deep understanding of the whole Universe.
Høg E.
doaj   +1 more source

Do Futures Prices Help Forecast Spot Prices? Evidence from China’s New Live Hog Futures

open access: yesAgriculture, 2023
China, the largest hog producer and consumer globally, has long experienced significant fluctuations in hog prices, partly due to the lack of rational expectations for future hog spot prices.
Tao Xiong, Miao Li, Jia Cao
doaj   +1 more source

The Depth of the Heavens – Belief and Knowledge During 2500 Years

open access: yesOpen Astronomy, 2003
For Dante Alighieri (1265-1321) the spiritual cosmos contained the Heavens, Earth and Hell, and it was compatible with the physical cosmos known from Aristotle (384-322 B.C.).
Høg Erik
doaj   +1 more source

Overview of Gaia Multi-Color Photometry

open access: yesOpen Astronomy, 2003
Gaia will obtain multi-color photometry for astrometric and astrophysical purposes. A photometry in five broad bands and with high angular resolution will be obtained after every astrometric observation of a star, especially for the sake of correcting ...
Høg Erik
doaj   +1 more source

Impact of African Swine Fever Epidemic on the Cost Intensity of Pork Production in China

open access: yesAgriculture, 2023
China’s African swine fever (ASF) outbreak, which started in 2018, has had a huge and far-reaching impact on China’s hog industry, and it has not been completely eliminated so far.
Zhaohui Yan   +3 more
doaj   +1 more source

Predicting Boar Sperm Survival during Liquid Storage Using Vibrational Spectroscopic Techniques

open access: yesBiology
Artificial insemination (AI) plays a critical role in livestock reproduction, with semen quality being essential. In swine, AI primarily uses cool-stored semen adhering to industry standards assessed through routine analysis, yet fertility ...
Serge L. Kameni   +6 more
doaj   +1 more source

Protection Motivation Theory and Farmers' Participation in Futures Markets: Evidence From Germany

open access: yesAgribusiness, EarlyView.
ABSTRACT This study examines why German farmers show limited adoption of commodity futures contracts despite substantial price volatility, applying Protection Motivation Theory (PMT) to understand the cognitive processes driving participation decisions in futures markets. Survey data from 303 German farmers collected in 2024 were analyzed using Partial
Hendrik Wever   +2 more
wiley   +1 more source

Price transmission in hog and feed markets of China

open access: yesJournal of Integrative Agriculture, 2015
There is an increasing demand for feed as the industrialization of hog production in China. Land scarcity limits China's ability to continue increasing its hog production without feed imports, particularly soybean, and the feed markets are increasingly ...
De ZHOU, Dieter Koemle
doaj   +1 more source

Causal analysis of trade loss from pathogens: A global study of foot and mouth disease impacts on meat exports

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Our general interest is in global trade loss from livestock pathogens, specifically exports. We adopt a causal inference approach that considers animal disease outbreaks over time as non‐staggered binary treatments with the potential for switching in (infection) and out of treatment (recovery) within the sample period. The outcome evolution of
Mohammad Maksudur Rahman   +1 more
wiley   +1 more source

Content-Based Image Retrieval Using Edge and Gradient Orientation Features of an Object in an Image From Database

open access: yesJournal of Intelligent Systems, 2016
In this work, we present a combination of edge feature and distribution of the gradient orientation of an object technique for content-based image retrieval (CBIR). First, the bidimensional empirical mode decomposition (BEMD) technique is employed to get
Kavitha H., Sudhamani M.V.
doaj   +1 more source

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