Results 71 to 80 of about 45,414 (251)

Demographic Dynamics and International Trade: Stylized Facts and Theoretical Insights

open access: yesJournal of Economic Surveys, EarlyView.
ABSTRACT Demographic change within a country has economic repercussions for other countries through international transactions. Ongoing shifts in population size and age structure across countries have important implications for international trade, operating through changes in market size, consumption preferences, and labor supply.
Kumuthini Sivathas
wiley   +1 more source

Border Disputes in the Global Periphery amid Declining U.S. Hegemonic Influence

open access: yesJournal of World-Systems Research
Contrary to popular expectations about a post-oil future, oil remains an important commodity in the global political economy and the world-system, in which peripheral economies rely on the export of raw material to earn foreign exchange.
Larry Liu, Leon Wilson
doaj   +1 more source

New records of Imantodes lentiferus (Cope, 1894) (Squamata: Dipsadidae) from the states of Pará and Mato Grosso, Brazil [PDF]

open access: yesCheck List, 2015
The arboreal snake Imantodes lentiferus (Cope, 1894) is distributed in lowland rainforests of the Amazon basin and Guiana region, reported from Colombia, Ecuador, Peru, Suriname, French Guiana, Guyana, Bolivia, Venezuela, and Brazil.
Jossehan Frota   +3 more
doaj   +3 more sources

Economic Impact of Periodontitis: Global, Regional and National Estimates of Periodontal Expenditure, With Forecasts to 2050

open access: yesJournal of Periodontal Research, EarlyView.
This study provides the first global, regional and national estimates of periodontal expenditure, with projections to 2050. Costs related to prevention, diagnosis, treatment, maintenance and rehabilitation are quantified across all countries worldwide.
Dian Yi Chow   +4 more
wiley   +1 more source

New Ommatius Wiedemann from the Americas with two new species groups, keys, and taxonomic notes (Diptera: Asilidae) [PDF]

open access: yes, 2009
Two species groups are proposed for Ommatius Wiedemann, normus and tibialis species groups, increasing the number to eight groups from the Americas. The normus group includes six species, two of which are new, O. nebulosus n. sp. and O. tepui n.
Scarbrough, Aubrey G.
core  

Robust Bernoulli Mixture Models for Credit Portfolio Risk

open access: yesMathematical Finance, EarlyView.
ABSTRACT This paper presents comparison results and establishes risk bounds for credit portfolios within classes of Bernoulli mixture models, assuming conditionally independent defaults that are stochastically increasing in a common risk factor. We provide simple and interpretable conditions on conditional default probabilities that imply a comparison ...
Jonathan Ansari, Eva Lütkebohmert
wiley   +1 more source

L’eau convoitée de la Guyane vénézuélienne1

open access: yesCybergeo, 2004
The Guayana region of Venezuela is controlled by the State’s planning. This territory is very important for the national economical development. The hydrological potential of the Caroni’s river is coveted for hydroelectric, industrial and urban uses that
Anne Pene-Annette
doaj   +1 more source

A complete checklist with new records and geographical distribution of the rove beetles (Coleoptera, Staphylinidae) of Brazil [PDF]

open access: yes, 2013
This paper presents the first comprehensive list of 2,688 species of Staphylinidae (Coleoptera) recorded from Brazil. The list is based on the taxonomic and ecological literature, and new records from some insect collections, and includes locality ...
Asenjo, Angélico   +4 more
core  

Trophic Redundancy and the Hidden Dietary Overlap Between Native and Invasive Stream Fishes

open access: yesEcology of Freshwater Fish, Volume 35, Issue 3, July 2026.
ABSTRACT Biological invasions introduce non‐native species into natural ecosystems, often reshaping localcommunities and altering trophic interactions. In freshwater environments, such invasions can intensify resource use and threaten native fish diversity.
Ronielson Gaia   +6 more
wiley   +1 more source

Amphibia, Hylidae, Osteocephalus exophthalmus Smith and Noonan, 2001: New country record and geographic distribution map, Venezuela

open access: yesCheck List, 2010
Osteocephalus exophthalmus Smith and Noonan is reported from Sierra de Lema in Venezuela, 190 km NW of thetype locality in Guyana. This is the first record of the species in Venezuela.
Barrio-Amoros, C. L.   +3 more
doaj  

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