Results 91 to 100 of about 28,214 (212)

Information Efficiency of the Capital Market: a Stochastic Calculus Approach Evidence from the Czech Republic (in English) [PDF]

open access: yes
This paper deals with an important characteristic of the capital market: information efficiency. With the use of geometric Brownian motion, the authors run several projections of stock prices based on varying amount of historic information and compare ...
Vít Pošta, Zbynìk Hackl
core  

Taxonomic results of the Bryotrop expedition to Zaire and Rwanda : 10., Trichocoleaceae, Geocalycaceae, Acrobolbaceae, Balantiopsidaceae, Lepidoziaceae (Telaranea, Arachniopsis), Calypogeiaceae, Adelanthaceae, Porellaceae, Jubulaceae, Marchantiaceae (Dumortiera), Polytrichaceae [PDF]

open access: yes, 1993
A survey of the families Trichocoleaceae, Geocalycaceae, Acrobolbaceae, Balantiopsidaceae, Lepidoziaceae (Telaranea, Arachniopsis), Calypogeiaceae, Adelanthaceae, Porellaceae, Jubulaceae, Marchantiaceae (Dumortiera) (Hepaticae) and Polytrichaceae (Musci)
Fischer, Eberhard
core  

Taxonomic results of the Bryotrop expedition to Zaire and Rwanda : 3., description of dollecting sites, the vegetation of Kahuzi-Biega-National Park/Zaire, Nyungwe Forest and Virunga volcanoes/Rwanda [PDF]

open access: yes, 1993
During the BRYOTROP-Expedition in 1991, 71 collecting sites could be visited. These are situated in the Kahuzi-Biega-National Park/Zaire, the Nyungwe Forest and the Virunga volcanoes/Rwanda.
Fischer, Eberhard
core  

A new species of Cololejeunea (Lejeuneaceae: Cololejeuneoideae) from Panama [PDF]

open access: yes, 1998
A new species of Cololejeunea section Protocolea, is described from Cerro Fábrega in Panama. The diagnostic characteristics of C. tixierii are lobes ovate-lanceolate, lobules never inflate but explanate or folded without forming a keel, reaching about ...
Dauphin, Gregorio   +1 more
core  

An HI study of three long-tailed irregular galaxies in the cluster Abell1367

open access: yes, 2007
We present the results on the distribution and kinematics of H$\sc{i}$ gas with higher sensitivity and in one case of higher spectral resolution as well than reported earlier, of three irregular galaxies CGCG 097073, 097079 and 097087 (UGC 06697) in the ...
Hota, Ananda, Saikia, D. J.
core  

Portinari: A Data Exploration Tool to Personalize Cervical Cancer Screening

open access: yes, 2017
Socio-technical systems play an important role in public health screening programs to prevent cancer. Cervical cancer incidence has significantly decreased in countries that developed systems for organized screening engaging medical practitioners ...
Meira Jr., Wagner   +4 more
core   +1 more source

Caracterización de los lepidópteros fitófagos asociados a la herbivoría de frailejones en la microcuenca de la quebrada Calostros del Parque Nacional Natural Chingaza

open access: yesMutis, 2013
The paramo ecosystem is one of the most sensitive to changes in climate and land use. These changes in physical conditions may lead to changes in species composition and their life cycles, increasing susceptibility to attack by pathogens and other ...
Cristian Salinas   +2 more
doaj  

Incidence of forcing factors on land covers of the Guacheneque Paramo, Colombia

open access: yesGeography, Environment, Sustainability
Paramo ecosystems are unique and are located in Ecuador, Colombia, and Venezuela. Although the Colombian government has made efforts for their preservation and sustainable use, several of the national paramos have experienced a change in their land cover
Yulia Ivanova   +2 more
doaj  

Diversidad y distribución de mariposas Satyrinae (Lepidoptera: Nymphalidae) en la cuenca del río Coello, Colombia

open access: yesRevista de Biología Tropical, 2007
Este estudio describe los patrones de diversidad y distribución de la subfamilia Satyrinae en la cuenca del río Coello (4º 17’ 08’’ N y 74º 35´ 36" W; 1 899.31 km²), en un gradiente altitudinal de 433 a 3 600 m.s.n.m, con el fin de determinar la ...
Jack F García-Perez   +3 more
doaj  

Socialinės paramos pašalpų taiklumo vertinimas

open access: yesEkonomika, 1999
Socialinės pereinamojo prie rinkos ekonomikos laikotarpio problemos - tai tam tikrų gyventojų grupių nuskurdimas. Lietuvos Vyriausybė socialinės paramos pašalpų sistemos pagalba siekia sušvelninti šių žmonių padėti. 1998 metais socialinei tam tikrų gyventojų grupių paramai buvo numatyta skirti 8,2 proc. valstybės biudžeto lėšų.
openaire   +4 more sources

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