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1

Mycobacterium tuberculosis population structure and molecular epidemiological analysis in Sucre municipality, Miranda state, Venezuela.  

PubMed

Sucre municipality is a large, densely populated marginal area in the eastern part of Caracas, Venezuela that consistently has more cases of tuberculosis than other municipalities in the country. To identify the neighborhoods in the municipality with the highest prevalence of tuberculosis, and determine whether the Mycobacterium tuberculosis strain distribution in this municipality is different from that previously found in the western part of Caracas and the rest of Venezuela, we collected data on all tuberculosis cases in the municipality diagnosed in 2005-6. We performed two separate molecular epidemiological studies, spoligotyping 44 strains in a first study, and spoligotyping 131 strains, followed by MIRU-VNTR 15 on 21 clustered isolates in the second. With spoligotyping, the most common patterns were Shared International Type SIT17 (21%); SIT42 (15%); SIT93 (11%); SIT20 (7%); SIT53 (6%), a distribution similar to other parts of Venezuela, except that SIT42 and SIT20 were more common. MIRU-VNTR 15 showed that six of seven SIT17 strains examined belonged to a large cluster previously found circulating in Venezuela, but all of the SIT42 strains were related to a cluster centered in the neighborhoods of Unión and Maca, with a MIRU-VNTR pattern not previously seen in Venezuela. It appears that a large percentage of the tuberculosis in the Sucre municipality is caused by the active transmission of two strain families centered within distinct neighborhoods, one reflecting communication with the rest of the country, and the other suggesting the insular, isolated nature of some sectors. PMID:25558753

Patiño, Margareth A; Abadía, Edgar; Solalba Gómez; Maes, Mailis; Muñoz, Mariana; Gómez, Daniela; Guzmán, Patricia; Méndez, María Victoria; Ramirez, Carmen; Mercedes, España; de Waard, Jacobus; Takiff, Howard

2014-12-01

2

Are Returns to Education on the Decline in Venezuela and Does Mission Sucre Have a Role to Play?  

ERIC Educational Resources Information Center

Anecdotal evidence points to a falling standard of living for the educated in Venezuela. During this same period, President Hugo Chavez implemented several education reforms. We focus on a major university education reform known as Mission Sucre and its potential impact on returns to university education. First, we show that returns to education…

Gonzalez, Naihobe; Oyelere, Ruth Uwaifo

2011-01-01

3

[Mollusc diversity in an Arca zebra (Mollusca: Bivalvia) community, Chacopata, Sucre, Venezuela].  

PubMed

The diversity of a subtidal epifaunal mollusk community was studied from September, 1990 to September, 1991 in Chacopata, Sucre State, Venezuela. There were 40 species (24 bivalves and 16 gastropods). The diversity indexes (H' = 2.087, J' = 0.392, 1/D = 0.528) were low when compared with other tropical zones. Monthly diversity reached its maximum in September, 1990 (1.63 bits/ind.) and July, 1991 (1.60 bits/ind.); minimum diversity occurred in June, 1991 (0.52 bits/ind.). A Log series model applied to species abundance data showed a straight line with a diversity index alpha of 5.56. Of 40 species identified, the turkeywing Arca zebra was dominant (69% in number of individuals and 72% of biomass) followed by Pinctada imbricata, Modiolus squamosus, Chama macerophyla and Anadara notabilis. The predatory snails Phyllonotus pomum, Chicoreus brevifrons and Murex recurvirostris seemed to have trophic relationships with A. zebra. The total mean biomass in wet weight (469.20 +/- 263 g m-2, shell included) was high which indicates that A. zebra, a species with a rapid growth rate, occupies a central role in the assemblage as an efficient filter feeder that converts planktonic food into available biomass, supporting one of the most important fisheries in Venezuela. PMID:11935909

Prieto, A S; Ruiz, L J; García, N; Alvarez, M

2001-06-01

4

Spatial and temporal distribution of anopheline larvae in two malarious areas in Sucre State, Venezuela.  

PubMed

The spatial and temporal distribution of anopheline larvae was studied in two coastal malarious areas of Sucre, State, Venezuela. Seven habitat types were sampled in the village of Guayana and eight species of Anopheles were collected. Anopheles aquasalis was the predominant species collected and was most abundant in the brackish marsh habitat (71 larvae per 100 samples). It was most abundant during the rainy season. At the second location, Santa Fé, six habitat types were sampled and four anopheline species were collected. Habitats where An. aquasalis was most abundant were temporary freshwater ponds (34 larvae per 100 samples) and mangroves (10.5 larvae per 100 samples). At this location it was also most abundant in the rainy season. During the dry season it was collected in small numbers in river pools (1.3 larvae per 100 samples) along with large numbers of An. pseudopunctipennis (479 larvae per 100 samples). Larval control could be an important component of the malaria control program because major habitats could be defined and presence and abundance of larvae was limited to specific times of year. PMID:8107599

Berti, J; Zimmerman, R; Amarista, J

1993-01-01

5

[Diversity, abundance and distribution of benthic macrofauna on rocky shores from North Sucre State, Venezuela].  

PubMed

The rocky intertidal zone is among the most extreme physical environments on Earth. Organisms living in this area are constantly stricken by physico-chemical and biological factors. Due to the ecological importance of these areas, we studied the diversity, abundance and distribution of the rocky coastline benthic macrofauna, from the North coast of Sucre State, Venezuela. We performed bimonthly samplings from November 2008 to September 2009. The collection of biological material in the littoral zone (supra, mid and infralittoral) was done manually with a grid of 0.25m2. Organisms were preserved in 10% formalin for later identification and analysis (ecological parameters and Kruskal-Wallis test to the abundance and diversity). We found a total 19,020 organisms (86 spp.), in 8 phyla, 45 families and 47 genera. Mollusks were the most abundant and diverse (58 spp.), followed by arthropods (12 spp.), annelids (7 spp.), echinoderms (5 spp.), and the less represented cnidarians, sipunculids, nemertinids and urochordates (1 sp.). The zonation found coincided with the universal scheme of zonation. The towns of Rio Boca and Rio Caribe presented the highest values of ecological parameters, and the lowest were found in Playa Grande. Statistical significant differences were found in the abundance and diversity of macrofauna among the three zones. The little information on the composition and distribution of macrobenthic rocky coastline, prevents a better comparison, however the results contribute to the knowledge of the marine biodiversity in this region. PMID:25412527

Fernandez, Johanna; Jiménez, Mayré; Allen, Thays

2014-09-01

6

[Nitrogen, phosphorus and the C/N ratio in superficial sediments of the lagoon of Chacopata, Sucre, Venezuela].  

PubMed

The basal behaviour and relationship with organic carbon (Corg) content and prevailing granulometric fractions, of organic nitrogen (Norg), total phosphorus (P-total) and C/N ratio in surface sediments of Chacopata lagoon, Sucre State, Venezuela, were studied. Concentrations and spatial gradients were determined in sixteen stations following a common method for marine sediments. Norg concentrations varied between 0.102 and 0.510% (x = 0.237%), total phosphorus between 0.012 and 0.094% (x = 0.058%) and C/N ratio between 9.27 and 44.47 (x = 20.53). The higher contents of Norg and total phosphorus are from sections with an abundance of mangroves, marine phanerogams, macroalgae, benthonic biomass and migratory birds shelters. The C/N ratio shows the typical values for carbonated sediments, indicating that the nitrogenous compounds are rapidly degraded and the organic matter presents itself as humic substances. This parameter was moderately associated with silt and clay, and showed antagonism with sand, whereas Norg and phosphorus showed no correlation with them. The organic contribution is purely autochthonous: no anthropogenous contributions were found. PMID:15266816

Fuentes Hernández, M V

2000-12-01

7

Geographic distribution and host plants of Raoiella indica and associated mite species in northern Venezuela.  

PubMed

The red palm mite (RPM), Raoiella indica Hirst (Acari: Tenuipalpidae), is an invasive pest in the New World, where it is currently considered a serious threat to coconut and banana crops. It was first reported from northern Venezuela in 2007. To determine its current distribution in this country, surveys were carried out from October 2008 to April 2010 on coconut (Cocos nucifera L.), banana (Musa spp.), ornamental plants and weeds in northern Venezuela. Higher population levels of RPM were registered on commercial coconut farms in Falcón and Sucre states but also on other plant species naturally growing along the coastal line in Anzoategui, Aragua, Carabobo, Monagas and Nueva Esparta states. Out of 34 botanical species evaluated, all RPM stages were observed only on eight arecaceous, one musaceous and one streliziaceous species, indicating that the pest developed and reproduced only on these plants. Mite specimens found on weeds were considered spurious events, as immature stages of the pest were never found on these. Amblyseius largoensis (Muma) (Acari: Phytoseiidae) was the most frequent predatory mite associated with RPM in all sampling sites. The results indicate that RPM has spread to extensive areas of northern Venezuela since its initial detection in Güiria, Sucre state. Considering the report of this pest mite in northern Brazil in the late 2009, additional samplings in southern Venezuela should be carried out, to evaluate the possible presence of RPM also in that region. PMID:23065034

Vásquez, Carlos; de Moraes, Gilberto J

2013-05-01

8

Temporal variations of heavy metals levels in Perna viridis, on the Chacopata-Bocaripo lagoon axis, Sucre State, Venezuela.  

PubMed

Perna viridis was used as biomonitor to assess heavy metal levels in the Chacopata-Bocaripo lagoon axis, Venezuela, during rain and drought seasons. The mussels were weighed and measured. The metal concentrations were determined by atomic absorption spectrophotometry. For rain period, the order of bioavailability was: Cu>Ni>Mn>Co>Cd>Pb, and for drought: Cu>Mn>Ni>Co>Pb>Cd. The concentrations of Ni, Co, Cd and Pb showed significant differences (P<0.05) in both periods. There was higher metal accumulation during drought season, possibly related to upwelling, since it produces an increase in primary productivity, which translates more food into organisms, making metals bioavailable for mussels. Only Cu and Mn showed significant relationships between the size and metal concentration, during drought period, it may be because of the organisms need for these essential metals in different physiological processes. PMID:25444616

Pinto, Rafael; Acosta, Vanessa; Segnini, Mary Isabel; Brito, Leonor; Martínez, Gregorio

2015-02-28

9

Geographical Distribution of Trypanosoma cruzi Genotypes in Venezuela  

PubMed Central

Chagas disease is an endemic zoonosis native to the Americas and is caused by the kinetoplastid protozoan parasite Trypanosoma cruzi. The parasite is also highly genetically diverse, with six discrete typing units (DTUs) reported TcI – TcVI. These DTUs broadly correlate with several epidemiogical, ecological and pathological features of Chagas disease. In this manuscript we report the most comprehensive evaluation to date of the genetic diversity of T. cruzi in Venezuela. The dataset includes 778 samples collected and genotyped over the last twelve years from multiple hosts and vectors, including nine wild and domestic mammalian host species, and seven species of triatomine bug, as well as from human sources. Most isolates (732) can be assigned to the TcI clade (94.1%); 24 to the TcIV group (3.1%) and 22 to TcIII (2.8%). Importantly, among the 95 isolates genotyped from human disease cases, 79% belonged to TcI - a DTU common in the Americas, however, 21% belonged to TcIV- a little known genotype previously thought to be rare in humans. Furthermore, were able to assign multiple oral Chagas diseases cases to TcI in the area around the capital, Caracas. We discuss our findings in the context of T. cruzi DTU distributions elsewhere in the Americas, and evaluate the impact they have on the future of Chagas disease control in Venezuela. PMID:22745843

Carrasco, Hernán J.; Segovia, Maikell; Llewellyn, Martin S.; Morocoima, Antonio; Urdaneta-Morales, Servio; Martínez, Cinda; Martínez, Clara E.; Garcia, Carlos; Rodríguez, Marlenes; Espinosa, Raul; de Noya, Belkisyolé A.; Díaz-Bello, Zoraida; Herrera, Leidi; Fitzpatrick, Sinead; Yeo, Matthew; Miles, Michael A.; Feliciangeli, M. Dora

2012-01-01

10

DISEÑO DE UN MODELO DE VENTAS A TRAVÉS DE INTERNET PARA LAS PyMES TURÍSTICAS DE MOCHIMA, ESTADO SUCRE (VENEZUELA)1  

Microsoft Academic Search

In time of recession, the expert talks about amounts related with the fall of the internal product brute, the unemployment, among others. The situation that have Venezuela today, join to the high inflation, and its coin devaluation; the scenery to customer and companies suppliers

Karen Elisa; Requena Mago; José Francisco Muñoz Rengel

11

A new species of Microphallus (Trematoda: Microphallidae) from Venezuela  

Microsoft Academic Search

During 1997-1999, a total of 94 crabs, Uca rapax were collected from La Sabana, La Ceiba and El Paujil, Sucre State, Venezuela. Of these 36 were infected with metacercariae. Two parasites were located in the abdominal muscles and one under the tissue of carapace and gonad. These metacercariae grew to adults in the following genera: Levinseniella, Microphallus and Maritrema, in

M. T. Díaz; A. K. Bashirullah; L. E. Hernández

12

Les succédanés du sucre durant la grossesse  

PubMed Central

Résumé Question J’ai une patiente enceinte qui consomme souvent des succédanés du sucre et elle m’a demandé si cette pratique continue pouvait nuire à sa grossesse ou à son enfant. Que devrais-je lui répondre et existe-t-il d’autres meilleurs choix durant la grossesse? Réponse Il faudrait faire plus de recherche pour déterminer plus exactement les effets de l’exposition aux succédanés du sucre in utero, mais les données disponibles ne laissent pas présager d’effets indésirables durant la grossesse. Toutefois, il est recommandé de consommer des substituts du sucre en quantités modérées et de se conformer aux doses journalières admissibles établies par les organismes de règlementation.

Pope, Eliza; Koren, Gideon; Bozzo, Pina

2014-01-01

13

Geothermal reconnaissance of northeastern Venezuela  

SciTech Connect

About 60% of Venezuela has been covered by a reconnaissance geothermal survey that includes geologic and water geochemical studies. The information is stored in a computerized data bank that holds data from 361 geothermal localities. The subsurface reservoir temperatures of the geothermal systems have been estimated using chemical geothermometry and mixing models and in many cases conceptual geothermal modes have been postulated. Preliminary assessments of the northeastern Venezuelan geothermal systems indicate that the most promising system is Las Minas near El Pilar in the state of Sucre, with an estimated deep reservoir temperature of 200-220{sup 0}C. Further studies are intended to evaluate its potential for electricity generation. Based on present data, other medium and low temperature systems in Venezuela appear useful for direct applications.

Urbani, F. (Universidad Central de Venezuela, Departamento Geologia, Centro de Documentacion de Informacion, Geotermica Nacional, Apartado 47028, Caracas 1041A (VE))

1989-01-01

14

The Bolivarian University of Venezuela: A Radical Alternative in the Global Field of Higher Education?  

ERIC Educational Resources Information Center

This article discusses paradoxes in the emergent global field of higher education as reflected in an alternative model of the university--the Bolivarian University of Venezuela (UBV) and the related higher education policy, Mision Sucre. With its credo in the applied social sciences, its commitment to popular pedagogy and its dependence on…

Ivancheva, Mariya

2013-01-01

15

Jose Antonio Ramos Sucre y la modernidad poetica  

E-print Network

mediante una investigaci6n seria, pero accesible, que abarcara su circunstancia social/politica, su entorno artistico/intelectual, y finalmente sus textos exclusivamente. Durante una visita auspiciada por la Fullbright Commission en diciembre de 1990... trabajo se basar6 en la edici6n Jose Antonio Ramps Sucre: Obra com leta de la Biblioteca Ayacucho de 1980 y propone apreciar la originalidad de Ramos Sucre mediante una reconsideraci6n del poema en prosa y su manejo a la luz del ambiente venezolano...

Watson, William Shell

1993-01-01

16

MMOIRES ORIGINAUX 37 Dtermination des sucres par chromatographie  

E-print Network

MÉMOIRES ORIGINAUX 37 Détermination des sucres par chromatographie en phase gazeuse. Applications à séparation de la fraction glucidique par voie chromatographique. Une technique de chromatographie semble bien adaptée à ce type de détermination: la chromatographie en phase gazeuse. En premier lieu, il convenait de

Paris-Sud XI, Université de

17

Microbial activity in surface sediments of Chacopata-Bocaripo lagoon axis, Sucre State, Venezuela.  

PubMed

The aim of this work was to evaluate the microbial activity of the surface sediments (0-10cm) of the Chacopata-Bocaripo lagoon axis (Ch-BLA) through microbiological parameters: microbial biomass (Cmic) dehydrogenase activity (DHS), fluorescein diacetate hydrolysis (HFDA), arginine ammonification (AA) and biochemical parameters: phosphatase (PHa) and urease (URa) activity. They were determined during transition (July 2010) and upwelling (March 2011) periods. Total organic carbon (TOC) did not vary significantly (p?0.05) between climatic periods. All the parameters studied were higher in upwelling season: Cmic (191.79mgCmickg(-1)), DHS (228.70?gTFFg(-1)24h(-1)), HFDA (204.09?g fluoresceing(-1)24h(-1)), AA (13.09?gNH4-Ng(-1)h(-1)), PHa (132.31?g pNFg(-1)h(-1)), URa (12.90?gNH4-Ng(-1)h(-1)). They appear to be controlled by the availability and quality of nutrients in each climatic period, and were useful tools for evaluating changes in microbial activity in marine sediments. PMID:25455789

Segnini de B, Mary Isabel; Gómez, Irma; Brito, Leonor; Acosta, Vanessa; Troccoli, Luis

2015-02-28

18

[Heavy metal distribution in superficial sedimenta ta Saco, Gulf of Cariaco, Sucre, Venezuela].  

PubMed

The Gulf of Cariaco is a marine ecosystem with high primary productivity, which gives it an ecological and socioeconomic importance. Nevertheless, anthropogenic activities around the Gulf produce wastes that are deposited directly or by runoff into the sediments, and consequently, increases concentrations of metals in this ecosystem. The objective of this study was to determine the distribution of cadmium, copper, lead, manganese, nickel and zinc in geochemical fractions of surface sediments, using modified BCR sequential extraction procedure. The concentrations were measured using flame atomic absorption spectroscopy. In addition, the contents of soluble and exchangeable metals associated to carbonate fractions, determined by BCR, were compared with those determined by the method of Campanella. Samples were collected in 12 stations during June 2007. The applied methodologies were evaluated with a certified reference material of marine sediments (HISS-1) and the results indicated that these methods provide adequate accuracy and precision for the extraction of metals. The total metal concentrations (microg g(-1)) were, Cd: < limit of detection (LD)-5.0; Pb: 1.79-60.41; Cu: no detected (ND)-42.18; Zn: 25.13-104.57; Mn: 66.31-80.29 and Ni: 3.29-24.58. Cd, Cu, Ni and Pb at several stations, exceeded the Canadian Sediment Quality Guidelines of the Lowest Effect Levels (LEL). Cadmium was identified as being the most mobile of the elements, having the highest concentrations in soluble and exchangeable cations and carbonates. However, Pb, Cu, Mn and Zn levels were found highly associated to organic matter and sulfide fractions. The methods did not show significant statistical differences for the extraction of soluble and exchangeable cations and the metals associated to carbonate fraction. There are several significant correlations between heavy metals, which suggest their common origin. PMID:21302528

Valentina Fuentes, María; Rojas de Astudillo, Luisa; Diaz, Alfredo; Martínez, Gregorio

2010-10-01

19

A new species of Microphallus (Trematoda: Microphallidae) from Venezuela.  

PubMed

During 1997-1999, a total of 94 crabs, Uca rapax were collected from La Sabana, La Ceiba and El Paujil, Sucre State, Venezuela. Of these 36 were infected with metacercariae. Two parasites were located in the abdominal muscles and one under the tissue of carapace and gonad. These metacercariae grew to adults in the following genera: Levinseniella, Microphallus and Maritrema, in the period of 2-5 days after feeding experimentally to the rat Rattus norvegicus, mice Mus musculus and duck Cairinia moschata. Specimens of the genus Microphallus were described herein as a new species M. sabanensis. The life cycle of M. sabanensis sp.nov. were studied experimentally using rat, mice and duck. All developmental stages and the adult are described. In addition, M. sabanensis was collected from wild birds Anas discors, Pluvialis squatarola, Butorides striatus, Egretta caerulea and Nycticorax violaceus from the same localities. PMID:17354386

Díaz, M T; Bashirullah, A K; Hernández, L E

2004-06-01

20

Universidad Central de Venezuela Facultad de Ciencias  

E-print Network

Universidad Central de Venezuela Facultad de Ciencias Escuela de Computación Lecturas en Ciencias, Universidad Central de Venezuela, Ap. 47002, Caracas 1041-A, Venezuela (mmonsalv, Universidad Central de Venezuela, Ap. 47002, Caracas 1041-A, Venezuela (mraydan

Raydan, Marcos

21

Update on Chagas disease in Venezuela – a review. Mem  

E-print Network

The present article reviews the status of Chagas disease in Venezuela based on the detection of Trypanosoma cruzi infections both in referred patients with clinical presumptive diagnosis (1988-2002) and in individuals sampled from rural localities representative of the different geographical

Néstor Añez; Gladys Crisante; Agustina Rojas

2004-01-01

22

Wing shape divergence between Rhodnius prolixus from Cojedes (Venezuela) and Rhodnius robustus from Mérida (Venezuela).  

PubMed

The existence of Rhodnius robustus as a species distinct from Rhodnius prolixus has long been the main epidemiological question about Chagas disease transmission in Venezuela and surrounding countries. These two taxa are morphologically and genetically very similar, but only R. prolixus is assumed to colonize houses and transmit Chagas disease to humans. R. robustus is assumed to be an exclusively sylvatic species, restricted to palm trees. If robustus and prolixus are actually the same species, the theoretical possibility exists of sylvatic specimens invading houses, even after insecticide application, and a control strategy similar to that of the successful Southern Cone Initiative against Triatoma infestans would be difficult to consider. Since no valid alternative control strategy exists, the answer to this biological question could be decisive about the future of vector control in this region. Although we believe genetic techniques are best suited to define species boundaries, we present here an example of the relevance of modern morphometrics in dealing with such an issue. Using both traditional and geometric morphometrics, we compared the wing size and shape in both sexes of these two taxa reared in the same laboratory for one generation. R. robustus specimens were collected from palm trees in the state of Mérida (Venezuela), and R. prolixus were collected from houses in the state of Cojedes (Venezuela). Our study provided no argument to question their specific status. Even after one generation of living in the same laboratory conditions, the two lines showed clear size differences, divergent allometric trends, and significant allometry-free differences in shape. These results suggest that R. robustus (Mérida, Venezuela) and R. prolixus (Cojedes, Venezuela) are distinct evolutionary units. Due to the epidemiological importance of this question, further studies in other geographic areas of Venezuela are required to accurately define the relationships of R. robustus and R. prolixus. PMID:12797988

Villegas, J; Feliciangeli, M D; Dujardin, J P

2002-12-01

23

Venezuela`s gas industry poised for long term growth  

SciTech Connect

Venezuela`s enormous gas resource, combined with a new willingness to invite outside investment, could result in rapid growth in that industry into the next century. The development of liquefied natural gas exports will depend on the future course of gas prices in the US and Europe, but reserves are adequate to supply additional projects beyond the proposed Cristobal Colon project. Venezuela`s gas reserves are likely to increase if exploration for nonassociated gas is undertaken on a larger scale. The paper discusses gas reserves in Venezuela, internal gas markets, the potential for exports, competition from Trinidad, LNG export markets, and the encouragement of foreign investment in the gas industry of Venezuela.

Croft, G.D. [Pantera Petroleum Inc., San Leandro, CA (United States)

1995-06-19

24

Mycobacterium tuberculosis ecology in Venezuela: epidemiologic correlates of common spoligotypes and a large clonal cluster defined by MIRU-VNTR-24  

Microsoft Academic Search

BACKGROUND: Tuberculosis remains an endemic public health problem, but the ecology of the TB strains prevalent, and their transmission, can vary by country and by region. We sought to investigate the prevalence of Mycobacterium tuberculosis strains in different regions of Venezuela. A previous study identified the most prevalent strains in Venezuela but did not show geographical distribution nor identify clonal

Edgar Abadía; Monica Sequera; Dagmarys Ortega; María Victoria Méndez; Arnelly Escalona; Omaira Da Mata; Elix Izarra; Yeimy Rojas; Rossana Jaspe; Alifiya S Motiwala; David Alland; Jacobus de Waard; Howard E Takiff

2009-01-01

25

Enzootic transmission of yellow fever virus, Venezuela.  

PubMed

Phylogenetic analysis of yellow fever virus (YFV) strains isolated from Venezuela strongly supports YFV maintenance in situ in Venezuela, with evidence of regionally independent evolution within the country. However, there is considerable YFV movement from Brazil to Venezuela and between Trinidad and Venezuela. PMID:25531105

Auguste, Albert J; Lemey, Philippe; Bergren, Nicholas A; Giambalvo, Dileyvic; Moncada, Maria; Morón, Dulce; Hernandez, Rosa; Navarro, Juan-Carlos; Weaver, Scott C

2015-01-01

26

Enzootic Transmission of Yellow Fever Virus, Venezuela  

PubMed Central

Phylogenetic analysis of yellow fever virus (YFV) strains isolated from Venezuela strongly supports YFV maintenance in situ in Venezuela, with evidence of regionally independent evolution within the country. However, there is considerable YFV movement from Brazil to Venezuela and between Trinidad and Venezuela. PMID:25531105

Auguste, Albert J.; Lemey, Philippe; Bergren, Nicholas A.; Giambalvo, Dileyvic; Moncada, Maria; Morón, Dulce; Hernandez, Rosa; Navarro, Juan-Carlos

2015-01-01

27

Geographic Names  

USGS Publications Warehouse

The Geographic Names Information System (GNIS), developed by the U.S. Geological Survey (USGS) in cooperation with the U.S. Board on Geographic Names (BGN), contains information about the official names for places, features, and areas in the 50 States, the District of Columbia, the territories and outlying areas of the United States, including Antarctica. It is the geographic names component of The National Map. The BGN maintains working relationships with State names authorities to cooperate in achieving the standardization of geographic names. The GNIS contains records on more than 2 million geographic names in the United States - from populated places, schools, reservoirs, and parks to streams, valleys, springs, ridges, and every feature type except roads and highways. Entries include information such as the federally-recognized name and variant names and spellings for the feature; former names; the status of the name as determined by the BGN; county or counties in which each named feature is located; geographic coordinates that locate the approximate center of an aerial feature or the mouth and source of a linear feature, such as a stream; name of the cell of the USGS topographic map or maps on which the feature may appear; elevation figures derived from the National Elevation Dataset; bibliographic code for the source of the name; BGN decision dates and historical information are available for some features. Data from the GNIS are used for emergency preparedness, mapmaking, local and regional planning, service delivery routing, marketing, site selection, environmental analysis, genealogical research, and other applications.

Yost, Lou; Carswell, William J., Jr.

2009-01-01

28

UNIVERSIDAD SIMN BOLVAR Caracas -Venezuela  

E-print Network

UNIVERSIDAD SIMÓN BOLÍVAR Caracas - Venezuela #12;Autoridades Rectorales Benjamín Scharifker Rector APOYO ACADÉMICO................................................................... 38 Biblioteca Central................................................................................... 52 ANEXO A Indicadores #12;Informe trimestral acerca de la marcha de la Universidad Octubre

Vásquez, Carlos

29

UNIVERSIDAD SIMN BOLVAR Caracas -Venezuela  

E-print Network

UNIVERSIDAD SIMÓN BOLÍVAR Caracas - Venezuela #12;Autoridades Rectorales Benjamín Scharifker Rector................................................................... 26 Biblioteca Central................................................................................... 39 ANEXO A Indicadores #12;Informe trimestral acerca de la marcha de la Universidad Julio

Vásquez, Carlos

30

[Community structure of bivalves and gastropods in roots of red mangrove Rhizophora mangle (Rhizophoraceae) in isla Larga, Mochima Bay, Venezuela].  

PubMed

The Rhizophora mangle roots form a complex ecosystem where a wide range of organisms are permanently established, reproduce, and find refuge. In this study, we assessed the diversity of bivalves and gastropods that inhabit red mangrove roots, in isla Larga, Mochima, Venezuela Sucre state. Bimonthly collections were made from January 2007 to May 2008, in four study areas denominated: South, North, East and West. In each area, five mangrove roots were sampled, and the specimens were obtained. We analyzed a total of 180 roots and a total of 35 bivalve species and 25 gastropod species were found. The most abundant bivalves were: Isognomon alatus, Isognomon bicolor, Ostrea equestris, Crassostrea rhizophorae and Brachidontes exustus; among gastropods, the most common where: Littorina angulifera, (Cymatium pileare and Diodora cayenensis. The months with the highest abundances and number of individuals for both groups were January and July 2007, and March 2008. The mangrove ecosystem in isla Larga, presented a number of individuals and species higher than those reported for other regions in Venezuela and the Caribbean. PMID:25102639

Acosta Balbas, Vanessa; Betancourt Tineo, Rafael; Prieto Arcas, Antulio

2014-06-01

31

Universidad Central de Venezuela Facultad de Ciencias  

E-print Network

Universidad Central de Venezuela Facultad de Ciencias Escuela de Computación Lecturas en Ciencias-02 Centro CCCT Caracas, Abril, 2007. #12;Universidad Central de Venezuela Facultad de Ciencias Escuela de

Raydan, Marcos

32

Universidad Central de Venezuela Facultad de Ciencias  

E-print Network

Universidad Central de Venezuela Facultad de Ciencias Postgrado SINCRONIZACI�N DE RELOJ Julio 2011 Network Time Protocol ­ NTP. Conclusiones.46 35 Proyecto en Venezuela. #12;Here comes your footer Ing Enzo

Cardinale Villarreal, Yudith C.

33

Universidad Central de Venezuela Facultad de Ciencias  

E-print Network

Universidad Central de Venezuela Facultad de Ciencias Escuela de Computación Lecturas en Ciencias ecoto@strix.ciens.ucv.ve ecoto@opalo.ciens.ucv.ve Universidad Central de Venezuela. Facultad de Ciencias. Escuela de Computación. Laboratorio de Computación Gráfica (LCG) Venezuela. Caracas Apdo. 47002, 1041-A ND

Coto, Ernesto

34

Universidad Central de Venezuela Facultad de Ciencias  

E-print Network

Universidad Central de Venezuela Facultad de Ciencias Escuela de Computación Lecturas en Ciencias@opalo.ciens.ucv.ve Universidad Central de Venezuela. Facultad de Ciencias. Escuela de Computación. Laboratorio de Computación Gráfica (LCG) Venezuela. Caracas Apdo. 47002, 1041-A. ND 2003-02 Resumen Los grafos son solo abstracciones

Coto, Ernesto

35

Universidad Central de Venezuela Facultad de Ciencias  

E-print Network

Universidad Central de Venezuela Facultad de Ciencias Escuela de Computación Una herramienta para. Universidad Central de Venezuela. {ecoto, hnavarro, omaira}@opalo.ciens.ucv.ve **Laboratorio TOOLS. Escuela de Computación. Facultad de Ciencias. Universidad Central de Venezuela. amatteo@isys.ciens.ucv.ve Caracas, Enero

Coto, Ernesto

36

Universidad Central de Venezuela Facultad de Ciencias  

E-print Network

Universidad Central de Venezuela Facultad de Ciencias Escuela de Computación Lecturas en Ciencias ecoto@strix.ciens.ucv.ve ecoto@opalo.ciens.ucv.ve Universidad Central de Venezuela. Facultad de Ciencias. Escuela de Computación. Laboratorio de Computación Gráfica (LCG) Venezuela. Caracas Apdo. 47002, 1041-A

Coto, Ernesto

37

Universidad Central de Venezuela Facultad de Ciencias  

E-print Network

Universidad Central de Venezuela Facultad de Ciencias Escuela de Computación Lecturas en Ciencias Construcción de Algoritmos Ernesto Coto ecoto@strix.ciens.ucv.ve Universidad Central de Venezuela. Facultad de Ciencias. Escuela de Computación. Laboratorio de Computación Gráfica (LCG) Venezuela. Caracas Apdo. 47002

Coto, Ernesto

38

Universidad Central de Venezuela Facultad de Ciencias  

E-print Network

Universidad Central de Venezuela Facultad de Ciencias Escuela de Computación Lecturas en Ciencias@lmpa.univ-littoral.fr) Departamento de Computaci´on, Facultad de Ciencias, Universidad Central de Venezuela, Ap. 47002, Caracas 1041-A, Venezuela (mraydan@kuaimare.ciens.ucv.ve). Sponsored by the Center of Scientific Com- puting at UCV. 1 #12

Raydan, Marcos

39

Venezuela offshore oil and gas production development: Past, present and future  

SciTech Connect

This paper presents a short history of offshore oil and gas production in Venezuela starting in Lake Maracaibo in 1923. The main emphasis has been the results of the recent R and D and the exploratory offshore programs in areas like Orinoco Delta located in the Atlantic Ocean, Northeast and Northwest Venezuela in the Caribbean sea. In the R and D offshore program the main objectives were: (1) To establish the local environmental, oceanographical, geotechnical and seismicity conditions for the Venezuelan Continental Platform. (2) To give a technical support to the PDVSA Operating Affiliates during the exploratory programs including: (a) to develop accurate drilling vessel positioning systems; (b) evaluation of sea bottom geotechnical conditions for safely operating the jack-ups and drilling vessels involved in the exploratory wells and (c) to identify those areas which because of their special nature require further investigation to establish preliminary type of platforms required for the areas to be developed or to evaluate other solutions proposed by Foreign Consultant Engineering Companies to the PDVSA Operating Affiliated Companies. The main objective of PDVSA for the coming future will be to develop the North of Paria Gas Field through the initially named Christopher Columbus Project now Sucre Gas, S.A., a consortium conformed by LaGoven, S.A. Shell, Exxon and Mitsubishi. objective of this paper is to give an idea of the history of the Venezuelan Oil and Gas Offshore development giving emphasis to the results of the INTEVEP S.A. Red offshore program and to show some results of the particular characteristics of oceanographical, environmental, geotechnical and seismic conditions in the main areas evaluated during the exploratory program: Orinoco Delta, Gulf of Paria and North of Paria.

Perez La Salvia, H.; Schwartz, E.; Contreras, M.; Rodriguez, J.I.; Febres, G.; Gajardo, E.

1995-12-01

40

Historical Earthquakes As Examples To Assess The Seismic Hazard In The Eastern Region of Venezuela  

NASA Astrophysics Data System (ADS)

The North-East region of Venezuela lies on the border of the friction zone between the Caribbean and South-American tectonic plates, a source of great seismicity. The first written news of an earthquake in the American Continent were those of the earth- quake of september 1530 which caused damage to Cumaná, the first town of that Continent. Since then a continuous series of earthquakes have been reported, many of them with damaging effects on Cumaná; those caused in the 1929 earthquake (17-01- 1929; with IX Mercalli degrees) were well described by Sidney Paige in the Vo. 20 of the B.S.S.A., March, 1930. An earthquake of magnitude 5.9 {11-06-1986; 10.26z N,63.29z W} was the trigger for the Unesco`s intention to declare the Estado Sucre as a pilot zone for seismological studies. In 1991 a report issued by the International Institute of Earthquake Prediction Theory and Matematical Geophysics (Academy of Sciences, U.R.S.S.) stated that the ocurrence of an earthquake of great magnitude which could affect the North-East region of Venezuela was possible. Other studies of the seismicity of the region have been carried out. The interest of the authorities and of the seismologists reached a peak with the earthquake of july 1997 (10.456z N, 63.555z W), with a magnitude of 6.9; there was a death toll of 73, around 528 people injured and more than 2000 houses needed to be completely rebuilt. A study of micro- zonification of the city of Cumaná has been carried out recently and the results of this study will be presented also to this Congress.

Martin, J.; Posadas, A.; Avendaño, J.; Sierra, R.; Bonive, F.

41

Purposeful Play in Rural Venezuela  

ERIC Educational Resources Information Center

Describes how children in rural Venezuela are trained in agricultural skills by the extended family. The highly organized training encourages play and exploration as important elements in familiarzing children with implements and methods of food production. It is suggested that rural school planners draw ideas from the rural family's educative…

Chesterfield, Ray

1977-01-01

42

Cephalopod Resources of Venezuela Introduction  

E-print Network

in production of octopus (mainly Octopus maya). In Venezuela, both squid and octopus are produced as a by-catch of the shrimp fishery. Only Mexico has a directed fishery for octopus. In the past 10 years, squid and octo. Octopus, Octopus vulgaris, is abundant in the catches from June until October, with a peak in August

43

Zonation of hydric regimens in Venezuela based on rainfall characteristics  

NASA Astrophysics Data System (ADS)

The climate in Venezuela is a product of a complex combination and interaction of meteorological and geographical factors such as the geographic location either north of Ecuador or in the tropics, and the presence of warm waters north and northeast, a vast tropical moist forest south and a mountain range west. In order to delimit the different climatic zones in Venezuela, a zoning of water regimes were used to classify climate indices primarily on rainfall parameters. A first index used was the length of a dry period, corresponding to the number of months in the year when precipitation is less than half of the reference evapotranspiration. Another index was the Aridity Index (Ia) proposed by UNEP (1997), for which calculations were based on values of average annual rainfall of the stations of the FAO database (1984, 2000). The reference evapotranspiration (ETo) was calculated by the CIRH program version 2.0 (Santibanez, 2005), which allows the calculation of ETo by the FAO (Allen et al.1998) or by the original Penman-Monteith formula, by Thornthwaite (1948), Turc (1961) or by Ivanov (1996). The results show that the distribution of the climatic regimes of Venezuela is determined by rainfall patterns. The central region is dominated by a sub-humid regime surrounded by a humid regime. The southern region is dominated by hyper-humid, hydric and hyper-hydric regimes, as well as the most western and eastern regions. In the northern and central-western regions the semiarid, arid and hyper-arid regimes dominate.

Lobo, D.; Verbist, K.; Gabriels, D.; Puche, M.; Bracho, G.; Soto, G.; Santibañez, F.

2012-04-01

44

La enseñanza teatral en Venezuela  

E-print Network

hace algunos años, de la totalidad de las investigaciones y experiencias de Stanislavsky. Por ejemplo, el llamado "método de las acciones físicas," cuya elaboración corresponde a los últimos años en la vida del maestro, llegó a los teatristas... del nivel del teatro realizado en las provincias. Con todas sus deficiencias y carencias, la enseñanza teatral en Venezuela ha iniciado el camino de su madurez. Su crecimiento cuan titativo comienza a dar paso a su elevación cualitativa. Los dos...

Rodrí guez, Orlando

1988-04-01

45

Molecular Detection and Characterization of Aichi Viruses in Sewage-Polluted Waters of Venezuela?  

PubMed Central

The circulation of Aichi virus in a major urban area was demonstrated using molecular detection with samples recovered from a major river polluted with sewage discharges in Caracas, Venezuela. Five out of 11 water samples studied were positive, being classified by phylogenetic analysis as genotype B. Analysis of sewage waters appears to be a useful methodology to uncover the presence of a hitherto undetected fecal pathogen in a given geographical area. PMID:20418428

Alcalá, Ana; Vizzi, Esmeralda; Rodríguez-Díaz, Jesús; Zambrano, José L.; Betancourt, Walter; Liprandi, Ferdinando

2010-01-01

46

Universidad Central de Venezuela Facultad de Ciencias  

E-print Network

Universidad Central de Venezuela Facultad de Ciencias Escuela de Computación Lecturas en Ciencias) for some E Cn�n with E Universidad Central de Venezuela, Centro de C´alculo Cient´ifico y Tecnol´ogico (reinaldo.astudillo@ciens.ucv.ve). Universidad Central de

Astudillo, Reinaldo

47

Family Cluster of Mayaro Fever, Venezuela  

PubMed Central

A cluster of protracted migratory polyarthritis involving four adult family members occurred in January 2000 after a brief overnight outing in a rural area of Venezuela. Laboratory testing demonstrated Mayaro virus as the cause of the cluster. These results documented the first human cases of Mayaro virus in Venezuela. PMID:15324555

Russell, Kevin L.; Vasquez, Clovis; Tesh, Robert B.; Salas, Rosalba; Watts, Douglas M.

2004-01-01

48

Triatoma maculata, the Vector of Trypanosoma cruzi, in Venezuela. Phenotypic and Genotypic Variability as Potential Indicator of Vector Displacement into the Domestic Habitat.  

PubMed

Triatoma maculata is a wild vector of Trypanosoma cruzi, the causative agent of Chagas disease; its incursion in the domestic habitat is scant. In order to establish the possible domestic habitat of T. maculata, we evaluated wing variability and polymorphism of genotypic markers in subpopulations of T. maculata that live in different habitats in Venezuela. As markers, we used the mtCyt b gene, previously apply to evaluate population genetic structure in triatomine species, and the ?-tubulin gene region, a marker employed to study genetic variability in Leishmania subgenera. Adults of T. maculata were captured in the period 2012-2013 at domestic, peridomestic (PD), and wild areas of towns in the Venezuelan states of Anzoátegui, Bolívar, Portuguesa, Monagas, Nueva Esparta, and Sucre. The phenotypic analysis was conducted through the determination of the isometric size and conformation of the left wing of each insect (492 individuals), using the MorphoJ program. Results reveal that insects of the domestic habitat showed significant reductions in wing size and variations in anatomical characteristics associated with flying, in relation to the PD and wild habitats. The largest variability was found in Anzoátegui and Monagas. The genotypic variability was assessed by in silico sequence comparison of the molecular markers and PCR-RFLP assays, demonstrating a marked polymorphism for the markers in insects of the domestic habitat in comparison with the other habitats. The highest polymorphism was found for the ?-tubulin marker with enzymes BamHI and KpnI. Additionally, the infection rate by T. cruzi was higher in Monagas and Sucre (26.8 and 37.0%, respectively), while in domestic habitats the infestation rate was highest in Anzoátegui (22.3%). Results suggest domestic habitat colonization by T. maculata that in epidemiological terms, coupled with the presence in this habitat of nymphs of the vector, represents a high risk of transmission of Chagas disease. PMID:25325053

García-Alzate, Roberto; Lozano-Arias, Daisy; Reyes-Lugo, Rafael Matías; Morocoima, Antonio; Herrera, Leidi; Mendoza-León, Alexis

2014-01-01

49

Triatoma maculata, the Vector of Trypanosoma cruzi, in Venezuela. Phenotypic and Genotypic Variability as Potential Indicator of Vector Displacement into the Domestic Habitat  

PubMed Central

Triatoma maculata is a wild vector of Trypanosoma cruzi, the causative agent of Chagas disease; its incursion in the domestic habitat is scant. In order to establish the possible domestic habitat of T. maculata, we evaluated wing variability and polymorphism of genotypic markers in subpopulations of T. maculata that live in different habitats in Venezuela. As markers, we used the mtCyt b gene, previously apply to evaluate population genetic structure in triatomine species, and the ?-tubulin gene region, a marker employed to study genetic variability in Leishmania subgenera. Adults of T. maculata were captured in the period 2012–2013 at domestic, peridomestic (PD), and wild areas of towns in the Venezuelan states of Anzoátegui, Bolívar, Portuguesa, Monagas, Nueva Esparta, and Sucre. The phenotypic analysis was conducted through the determination of the isometric size and conformation of the left wing of each insect (492 individuals), using the MorphoJ program. Results reveal that insects of the domestic habitat showed significant reductions in wing size and variations in anatomical characteristics associated with flying, in relation to the PD and wild habitats. The largest variability was found in Anzoátegui and Monagas. The genotypic variability was assessed by in silico sequence comparison of the molecular markers and PCR-RFLP assays, demonstrating a marked polymorphism for the markers in insects of the domestic habitat in comparison with the other habitats. The highest polymorphism was found for the ?-tubulin marker with enzymes BamHI and KpnI. Additionally, the infection rate by T. cruzi was higher in Monagas and Sucre (26.8 and 37.0%, respectively), while in domestic habitats the infestation rate was highest in Anzoátegui (22.3%). Results suggest domestic habitat colonization by T. maculata that in epidemiological terms, coupled with the presence in this habitat of nymphs of the vector, represents a high risk of transmission of Chagas disease. PMID:25325053

García-Alzate, Roberto; Lozano-Arias, Daisy; Reyes-Lugo, Rafael Matías; Morocoima, Antonio; Herrera, Leidi; Mendoza-León, Alexis

2014-01-01

50

Thinking Like a Geographer  

ERIC Educational Resources Information Center

This article presents an activity that engages the student in the geographic inquiry process, the student acquires geographic data and analyzes geographic information to answer a geographic question. The question is: "Do students in my class have place name mastery of the 50 states?" The activity assesses students' geo-literacy and shows the…

Chernosky, Margaret Shaw

2012-01-01

51

[Diversity and abundance of molluscs in Thalassia testudinum prairie of the Bay of Mochinma, Mochima National Park, Venezuela].  

PubMed

The diversity and abundance of benthic malacological communities associated to Thalassia testudinum beds was studied at four localities of Mochima Bay, Sucre state, Venezuela. At each locality, samples were taken monthly on perpendicular transect at different depths (0-4 m), from January 1991 to December 1991, using a quadrate (0.25 m2) for collecting mollusks and sediments. A total of 2,988 organisms of infauna and epifauna belonging to 81 species of the classes Gastropoda (41) and Bivalvia (40) were collected. More abundant species were Anadara notabilis, Codakia orbicularis, Cerithium litteratum, Cerithium eburneum, Batillaria minima, Modiolus squamosus, Modulus modulus, Chione cancellata, Turritella variegata, Arca zebra, y Laevicardium laevigatum. There were significant differences in number of organisms between depth and month at La Gabarra which presented the highest value of total (4.51 bits/ind) and monthly diversity (2.71-3.90 bits/ind). Biomass and abundance were low in the Mochima Bay while Varadero station presented the highest value. The bivalve A. notabilis and gastropod M. modulus were species common to the four stations. PMID:15162735

Prieto, Antulio; Sant, Sybil; Méndez, Elizabeth; Lodeiros, César

2003-06-01

52

BROWN Y FERNNDEZ, Heliconiini de Venezuela Los Heliconiini (Lepidoptera, Nymphalidae)  

E-print Network

, Facultad de Agronomía, Universidad Central de Venezuela. Apdo. 4579, Maracay, Aragua, Venezuela. #12;BolBROWN Y FERNÁNDEZ, Heliconiini de Venezuela 29 Los Heliconiini (Lepidoptera, Nymphalidae) de Venezuela KEITH S. BROWN, JR.* Y F. FERNÁNDEZ YÉPEZ** RESUMEN Se ilustran y presentan datos sobre variación

Mallet, James

53

[Prevalence of human infections by Trypanosoma cruzi in blood banks in Venezuela].  

PubMed

Primary investigations carried out in blood banks in Venezuela during the 1950s, indicated that overall seroprevalence for Trypanosoma cruzi infection was 12% amongst blood donors. In Venezuela, blood donation is free. All public and private blood banks are controlled by the Ministry of Health. As from 1988 the ELISA technique was uniformly used in blood banks for the detection of T. cruzi infections. Annual median seroprevalence, between 1988 to 1992, was 1.20% (1.09-1.94%), with geographical variations between localities in several States. States with higher prevalence rates are located in the western and central part of Venezuela: Portuguesa, Lara, Trujillo, Cojedes and Carabobo. Due to difficulties in obtaining incidence rates for Chagas disease, it seems proper to use prevalence rates due to its greater stability; and in the specific case of Venezuela, due to a lesser severity and a higher survival of this disease at present. Considering that there is little to be offered to the seropositive individual, repeatability is avowed for serological diagnosis. Specificity should be strived for in the light of lower prevalence rates at present. PMID:8115813

Aché, A

1993-01-01

54

South America, Brazil, Venezuela activity totals skyrocket  

SciTech Connect

This paper reports that pipe lines under construction, planned or under study in South America shows almost a 100% increase from 1990 figures. Brazil, Peru and Venezuela have posted large increases in gas and crude facilities.

Not Available

1991-11-01

55

An Example of Educational Transformation: Venezuela.  

ERIC Educational Resources Information Center

Presents a case study of educational development in Venezuela, with emphasis on political and cultural influences, social needs, needs of developing nations, experimentation on all levels, fellowship programs, and projections for the future. (DB)

Cirigliano, Gustavo F. J.

1979-01-01

56

Geographic Media Literacy  

ERIC Educational Resources Information Center

While the use of media permeates geographic research and pedagogic practice, the underlying literacies that link geography and media remain uncharted. This article argues that geographic media literacy incorporates visual literacy, information technology literacy, information literacy, and media literacy. Geographic media literacy is the ability…

Lukinbeal, Chris

2014-01-01

57

REPBLICA BOLIVARIANA DE VENEZUELA Consejo Nacional de Universidades  

E-print Network

Dirección de Extensión de la Universidad Central de Venezuela en la ciudad de Caracas el día 15 de mayo de los venezolanos. Caracas, 15 de mayo de 2014. Universidad Central de Venezuela (UCV) UniversidadREPÚBLICA BOLIVARIANA DE VENEZUELA Consejo Nacional de Universidades Núcleo de Autoridades de

Vásquez, Carlos

58

Environmental geographic information system.  

SciTech Connect

This document describes how the Environmental Geographic Information System (EGIS) was used, along with externally received data, to create maps for the Site-Wide Environmental Impact Statement (SWEIS) Source Document project. Data quality among the various classes of geographic information system (GIS) data is addressed. A complete listing of map layers used is provided.

Peek, Dennis; Helfrich, Donald Alan; Gorman, Susan

2010-08-01

59

Situating Economic Geographical Teaching  

ERIC Educational Resources Information Center

This article makes an argument for an economic geographical pedagogy that is post-disciplinary, emphasizing non-hierarchical, student-based knowledge, disciplinary interconnectedness, epistemological plurality, and material embodiedness and embeddedness. Key to this conception of economic geographical pedagogy are recent writings of Timothy…

Barnes, Trevor J.

2006-01-01

60

Mastery: A Lesson from Maria in Venezuela  

ERIC Educational Resources Information Center

Children who have been born into poverty or into at-risk circumstances are often considered "disposable" and not a societal priority. These youngsters have few advocates and limited successful options in life. In the city of Maracaibo, Venezuela, there is a large population of Amerindians who are called Guajiros. These indigenous people have…

Powell, Sandra Anez; Powell, Norman W.

2012-01-01

61

The history of aeronautical medicine in Venezuela  

NASA Technical Reports Server (NTRS)

The Aerial Medical Service of the Ministry of Transportation and Communications of Venezuela was created on June 1949, and later became the Department of Aeronautical Medicine. Its functions include the medical examinations of future pilots, navigators and flight engineers. The importance of good mental and physical health in all flight and ground personnel to ensure the safety of air travel is discussed.

Iriarte, D. R.

1986-01-01

62

Geographic names of Antarctica  

USGS Publications Warehouse

The geographic nomenclature of Antarctica was long in need of an overall systematic treatment, objective in approach and based upon thorough examination of all the evidence. The results of such treatment over a period of about three years were presented in Geographical Names of Antarctica, Special Publication No. 86 of the Board on Geographical Names, in May 1947, two supplements to which were issued in 1949 and 1951. The continuing program since that publication has now covered most of the geographic naming in Antarctica. As research has filled in many of the previous gaps in knowledge, a number of names have been modified and minor amendments have been made in the policies. This revised publication brings together the greatly enlarged body of names officially standardized for use by the United States Government, together with new pertinent background information.

U.S. Board on Geographic Names; Department of the Interior; Burrill, Meredith F.; Bertrand, Kenneth J.; Alberts, Fred G.

1956-01-01

63

Minnesota Geographic Data Clearinghouse  

NSDL National Science Digital Library

This site from the Minnesota Land Management Information Center provides a collection of sources for geospatial data needed to power Geographic Information Systems. Topics include data search tools, agency data sites, data documentation sites, and aerial photography, among others.

Land Management Information Center

64

Geographic Names Information System  

USGS Publications Warehouse

The Geographic Names Information System (GNIS) is an automated data system developed by the U.S. Geological Survey (USGS) to standardize and disseminate information on geographic names. GNIS provides primary information for all known places, features, and areas in the United States identified by a proper name. The information in the system can be manipulated to meet varied needs. You can incorporate information from GNIS into your own data base for special applications.

U.S. Geological Survey

1984-01-01

65

Resources for Geographers  

NSDL National Science Digital Library

Maintained by Lance Christian and Kenneth Foote of the University of Colorado at Boulder Department of Geography, the Resources for Geographers Web site is an excellent source of information on the Internet for geographers. Links are offered for search engines, online journals, professional associations, research organizations, map collections, geo-spatial datasets, newsgroups and listservers, academic departments, jobs, educational resources, software, and miscellaneous other geography related resources.

Christian, Lance.

66

Geographic Names Information System  

NSDL National Science Digital Library

The US Geological Surveys online Geographic Names Information System contains data on nearly 2 million physical and cultural geographic features in the US. Facts include federally recognized feature name, feature type, elevation, estimated 1994 population of incorporated cities and towns, state and county in which the feature is located, latitude and longitude of the feature location, and more. Searches can be done by feature name or type, state, county name, elevation range, and population range. A simple but useful site.

67

Inferring Geographical Ontologies from Multiple Resources for Geographical Information Retrieval  

E-print Network

the indication of a broader geographical entity is omitted when it is supposed to be well-known to the read- ers, when there are many ways to indicate a geographical entity. This is particularly true for foreign namesInferring Geographical Ontologies from Multiple Resources for Geographical Information Retrieval

Rosso, Paolo

68

Venezuela: A Study of the Educational System of Venezuela and a Guide to the Academic Placement of Students from Venezuela in Educational Institutions of the United States.  

ERIC Educational Resources Information Center

Written as a guide to be used in the admission and placement of Venezuelan students in U.S. institutions of higher education, this study discusses the education system of Venezuela. The role of education in modern Venezuela and the educational structure are summarized. Information is provided on preschool and primary education, intermediate…

Hoover, Gary

69

Equal rights for equal action : women's mobilization for suffrage in Venezuela  

E-print Network

of the Universidad Central de Venezuela on severalclose the Universidad Central de Venezuela (UCV) from 1912Venezuela during his term (although others chose to travel abroad) and the Universidad Central

Skog, Erica Lynn

2008-01-01

70

78 FR 77423 - Ferrosilicon From the Russian Federation and Venezuela: Postponement of Preliminary...  

Federal Register 2010, 2011, 2012, 2013, 2014

...A-307-824] Ferrosilicon From the Russian Federation and Venezuela: Postponement...investigations on ferrosilicon from the Russian Federation (``Russia'') and Venezuela...1\\ See Ferrosilicon From the Russian Federation and Venezuela:...

2013-12-23

71

Venezuela Paleontolgica Evolucin de la biodiversidad  

E-print Network

. Producción: Printwork Art GmbH, St. Gallen ISBN 978-3-033-03606-2 Copyright © 2012, Marcelo R. Sánchez#12;Venezuela Paleontológica Evolución de la biodiversidad en el pasado geológico Marcelo R contraportada: Stéphane Garcia, Zürich Foto de portada: Arenas de los Médanos de Coro, Foto Marcelo R. Sánchez

Bermingham, Eldredge

72

Faced with too many names, Venezuela makes a modest proposal  

NSDL National Science Digital Library

Inspirations: No more little sun kingshttp://blogs.smh.com.au/sit/archives/2007/09/inspirations_no_more_little_su.htmlBaby names-are they 4real?http://www.independent.ie/lifestyle/parenting/baby-names--are-they-4real-1070360.htmlPopular baby nameshttp://www.ssa.gov/OACT/babynames/index.htmlBehind the Namehttp://www.behindthename.com/History and hidden meanings of Britain's brilliant place names from Ordnance Surveyhttp://www.ordnancesurvey.co.uk/oswebsite/freefun/didyouknow/placenames/Names are a common feature of the human experience and have been with us for millennia. People have been named after products, geographic features, and just about everything else imaginable. The practice of naming children has been the subject of thousands of books, hundreds of weblogs, and informal conversations between soon-to-be mothers and fathers. This week, electoral officials in Venezuela introduced a bill that would effectively allow parents to select their baby's name from a list of a mere 100 approved by the central government. The stated purpose of the bill is "to preserve the equilibrium and integral development of the child." Interestingly enough, another intent of the bill is to prevent names that "generate doubts" about the gender of the child. Certain groups would receive exemptions, including Indians and foreigners, but there are still many who find this proposed measure quite offensive. One new mother in Venezuela remarked, "It's a question of taste", after she told a reporter that her daughter's name was Mariangela, which effectively combined Maria and Angela.The first link leads to a fine news article by Simon Romero on this proposal which appeared in this Wednesday's New York Times. The second link will take visitors to another piece on the subject offered by The Sydney Morning Herald. Moving on, the third link leads to an important piece from the Irish Independent which explores the influence of pop culture on baby names. The fourth link leads to the Social Security Administration's very fun and engaging site on popular baby names, past and present. The fifth link will take users to the "Behind the Name" site, which takes visitors through the etymology of thousands of names. The last link explores the world of British place names, courtesy of the Ordnance Survey. Important facts are revealed through this exploration of toponymy, including the history of Welsh place names such as Caerdydd, Tresaith, and Maesbanadlog.

Grinnell, Max

2007-09-07

73

Federal Geographic Data Committee  

NSDL National Science Digital Library

The Federal Geographic Data Committee (FGDC) is an interagency committee organized in 1990 to promote the coordinated dissemination and application of geospatial data through development of the National Spatial Data Infrastructure (NSDI). In cooperation with governmental, academic, nonprofit and private sector organizations, the FGDC is developing the NSDI as a base structure of policies, standards, procedures and relationships among data producers and users that will leverage individual geographic data efforts, and thereby facilitate expedited and expanded sharing, access, and use of geospatial data. The NSDI will (1) reduce duplication of effort among agencies, (2) improve quality and reduce costs related to geographic information, (3) make geographic data more available to the public, (4) increase the benefits of using available data, and (4) establish key partnerships with states, counties, cities, tribal nations, academia and the private sector to increase data availability. The Geospatial Data Clearinghouse (i.e., the National Spatial Data Clearinghouse) is a collection of over 250 servers having digital geographic data primarily for use in Geographic Information Systems (GIS), image processing systems, and other modeling software and prepared in accordance with NSDI protocols. While facilitated by the FGDC, the Clearinghouse is cooperative and decentralized, having six regional gateways. From the FGDC site, one can search the Clearinghouse gateways, browse the organizational sites of the registered NSDI Clearinghouse Nodes, download papers pertaining to the metadata, standards, framework, and stakeholders associated with development of the NSDI, or search through the partner site of the Center for Advanced Spatial Technologies (CAST) for online geospatial data by general subject, state GIS and base map sources, or other U.S. organizational sites hosting national scale data.

74

The Geographer's Craft  

NSDL National Science Digital Library

The Department of Geography at the University of Texas at Austin created this experimental course as an integrated approach to teach geographical techniques. The lecture and discussion notes and problems and exercises for the two semester course are available on the Internet for use by the public. Lecture topics include Aerial Photography and Remote Sensing, Cartographic Communication, and Legal Issues Relating to GIS. Digital Aerobics, Greytown, Nicaragua in 1854, and Environmental and Architectural Barriers are some of the problems that students study to increase their knowledge of geographic techniques (under Warm-up Exercises). The site also features links to related Internet resources and class projects from past semesters.

75

Common Distribution Patterns of Marsupials Related to Physiographical Diversity in Venezuela  

PubMed Central

The aim of this study is to identify significant biotic regions (groups of areas with similar biotas) and biotic elements (groups of taxa with similar distributions) for the marsupial fauna in a part of northern South America using physiographical areas as Operational Geographical Units (OGUs). We considered Venezuela a good model to elucidate this issue because of its high diversity in landscapes and the relatively vast amount of information available on the geographical distribution of marsupial species. Based on the presence-absence of 33 species in 15 physiographical sub-regions (OGUs) we identified Operational Biogeographical Units (OBUs) and chorotypes using a quantitative analysis that tested statistical significance of the resulting groups. Altitudinal and/or climatic trends in the OBUs and chorotypes were studied using a redundancy analysis. The classification method revealed four OBUs. Strong biotic boundaries separated: i) the xerophytic zone of the Continental coast (OBU I); ii) the sub-regions north of the Orinoco River (OBU III and IV); and those south to the river (OBU II). Eleven chorotypes were identified, four of which included a single species with a restricted geographic distribution. As for the other chorotypes, three main common distribution patterns have been inferred: i) species from the Llanos and/or distributed south of the Orinoco River; ii) species exclusively from the Andes; and iii) species that either occur exclusively north of the Orinoco River or that show a wide distribution throughout Venezuela. Mean altitude, evapotranspiration and precipitation of the driest month, and temperature range allowed us to characterize environmentally most of the OBUs and chorotypes obtained. PMID:24806452

Ventura, Jacint; Bagaria, Guillem; Sans-Fuentes, Maria Assumpció; Pérez-Hernández, Roger

2014-01-01

76

Common distribution patterns of marsupials related to physiographical diversity in Venezuela.  

PubMed

The aim of this study is to identify significant biotic regions (groups of areas with similar biotas) and biotic elements (groups of taxa with similar distributions) for the marsupial fauna in a part of northern South America using physiographical areas as Operational Geographical Units (OGUs). We considered Venezuela a good model to elucidate this issue because of its high diversity in landscapes and the relatively vast amount of information available on the geographical distribution of marsupial species. Based on the presence-absence of 33 species in 15 physiographical sub-regions (OGUs) we identified Operational Biogeographical Units (OBUs) and chorotypes using a quantitative analysis that tested statistical significance of the resulting groups. Altitudinal and/or climatic trends in the OBUs and chorotypes were studied using a redundancy analysis. The classification method revealed four OBUs. Strong biotic boundaries separated: i) the xerophytic zone of the Continental coast (OBU I); ii) the sub-regions north of the Orinoco River (OBU III and IV); and those south to the river (OBU II). Eleven chorotypes were identified, four of which included a single species with a restricted geographic distribution. As for the other chorotypes, three main common distribution patterns have been inferred: i) species from the Llanos and/or distributed south of the Orinoco River; ii) species exclusively from the Andes; and iii) species that either occur exclusively north of the Orinoco River or that show a wide distribution throughout Venezuela. Mean altitude, evapotranspiration and precipitation of the driest month, and temperature range allowed us to characterize environmentally most of the OBUs and chorotypes obtained. PMID:24806452

Ventura, Jacint; Bagaria, Guillem; Sans-Fuentes, Maria Assumpció; Pérez-Hernández, Roger

2014-01-01

77

Download Geographic Data  

Cancer.gov

The section includes Microsoft Excel (.xls) or comma-delimited text (.txt) files that provide county, state economic area (SEA), and state codes and names. There are individual files for each of the three geographic region types, as well as one file relating the three to each other.

78

Geographical Classification in Comics  

E-print Network

In this article, the concept of geographical classification-- in itself not a particularly widespread method in cultural geography-- is applied to the field of comics. Although geographical classification is already used in comics sometimes, it is rarely reflected upon. This article aims at closing this gap by addressing some issues concerning geographical classification and its appliance to works of art in general and comics in particular. Before moving on to comics, I'd like to start with some examples from the field of “classical ” art to demonstrate the ubiquity of classifications in the world of art and art history. These examples will introduce some concepts and problems connected with art and geographical classification. Some of these are well-known, whereas others have been relatively neglected so far. These concepts will be applied to comics later in the article. As a first example, consider a typical floor plan of an art museum, say, the National Gallery in London. In the floor plan of the National

unknown authors

2009-01-01

79

Critical Pedagogy and Empowering in Teacher Education in Venezuela.  

ERIC Educational Resources Information Center

This paper addresses the issue of the relationship between critical pedagogy and English as a foreign language (EFL) in Venezuela. Teacher-researchers have come to see the issues confronting nonnative educators in ELT as a more important issue than in previous years. They are particularly concerned about the current situation in Venezuela

Chacon, Carmen T.; Alvarez, Luisa Cristina

80

Using the Five Themes of Geography to Teach about Venezuela.  

ERIC Educational Resources Information Center

Maintains that Venezuela has many U.S. ties because of its relative proximity and economic significance. Asserts that the Five Themes of Geography can be used to design effective classroom lessons about Venezuela. Presents five activities that include student objectives, necessary materials, and step-by-step instructional procedures. (CFR)

Sunal, Cynthia Szymanski; And Others

1995-01-01

81

National Geographic: Blue Whales  

NSDL National Science Digital Library

As a cameraman leans in to get a shot of a blue whale, this massive creature glides through the water off of Costa Rica. That's the opening photograph that visitors to this interactive article from National Geographic are presented with, and it's a rather amazing image. This interactive article and feature is derived from a March 2009 feature in the print edition of National Geographic magazine, and it features the photography of Flip Nicklin and the writing of Ken Brower. The article offers an in-depth look into the recovery of the blue whale population off the coast of Costa Rica in recent years, and along the way visitors can stop off to take a look at a special photo gallery, take a quiz on these remarkable creatures, and also watch a video the provides the story behind one of Nicklin's photographs.

Brower, Ken

82

National Geographic: Coffee  

NSDL National Science Digital Library

This artful National Geographic website serves up a virtual cup of coffee legends and information. The website is better suited for coffee novices than experts, as it provides mostly introductory information about this widely loved beverage. Site features include brief descriptions of significant moments in coffee history (beginning in Ethiopia around A.D. 800), an overview of basic roasts, and statistics for top coffee-producing countries (with links to country maps). The site contains a National Geographic magazine article about coffee from 1981; a list of related books and articles; and links to related websites. Site visitors will also find a Coffee Talk forum, which has not seen much activity in the past year, but has the potential to be a center for coffee-related conversation on the Web.

83

National Geographic: Maps  

NSDL National Science Digital Library

Many people have fond memories of the special maps created as inserts placed in the National Geographic magazine from time to time. This rather special section of the National Geographic's website provides interested parties with a dazzling array of thematic maps that document the European exploration of North America, ecological zones, and the world of the poet Basho. Visitors might do well to start by looking over the "Editors' Picks" area. Here they will find atlas jigsaw puzzles to play online and "EarthPulse: A Visual Guide to Trends." The "EarthPulse" area includes vital statistics about global population trends, economic opportunity, and more. The site also includes the "Atlas Explorer", which allows users to explore detailed political maps of the USA, Africa, Europe, and the world's oceans.

2012-01-13

84

Querying Canadian Geographical Names  

NSDL National Science Digital Library

This Canadian site is a searchable database of places in Canada. Searches can be made by location name and/or point coordinates. Data returned gives the place name, location, general area map, feature type, and any former names the place may have had. This site is part of the Geographical Names site for Canada, which connects to details about name origins, student module projects, publications and more.

85

Molecular and Antigenic Comparison of Ehrlichia canis Isolates from Dogs, Ticks, and a Human in Venezuela  

PubMed Central

We previously culture isolated a strain of Ehrlichia canis, the causative agent of canine ehrlichiosis, from a human in Venezuela. In the present study, we examined whether dogs and ticks are infected with E. canis in Venezuela and, if so, whether this is the same strain as the human isolate. PCR analysis using E. canis-specific primers revealed that 17 of the 55 dog blood samples (31%) and all three pools of four Rhipicephalus sanguineus ticks each were positive. An ehrlichial agent (Venezuelan dog Ehrlichia [VDE]) was isolated and propagated in cell culture from one dog sample and was further analyzed to determine its molecular and antigenic characteristics. The 16S rRNA 1,408-bp sequence of the new VDE isolate was identical to that of the previously reported Venezuelan human Ehrlichia isolate (VHE) and was closely related (99.9%) to that of E. canis Oklahoma. The 5? (333-bp) and 3? (653-bp) sequences of the variable regions of the 16S rRNA genes from six additional E. canis-positive dog blood specimens and from three pooled-tick specimens were also identical to those of VHE. Western blot analysis of serum samples from three dogs infected with VDE by using several ehrlichial antigens revealed that the antigenic profile of the VDE was similar to the profiles of VHE and E. canis Oklahoma. Identical 16S rRNA gene sequences among ehrlichial organisms from dogs, ticks, and a human in the same geographic region in Venezuela and similar antigenic profiles between the dog and human isolates suggest that dogs serve as a reservoir of human E. canis infection and that R. sanguineus, which occasionally bites humans residing or traveling in this region, serves as a vector. This is the first report of culture isolation and antigenic characterization of an ehrlichial agent from a dog in South America, as well as the first molecular characterization of E. canis directly from naturally infected ticks. PMID:11473993

Unver, Ahmet; Perez, Miriam; Orellana, Nelson; Huang, Haibin; Rikihisa, Yasuko

2001-01-01

86

Volunteered Geographic Information in Wikipedia  

ERIC Educational Resources Information Center

Volunteered geographic information (VGI) refers to the geographic subset of online user-generated content. Through Geobrowsers and online mapping services, which use geovisualization and Web technologies to share and produce VGI, a global digital commons of geographic information has emerged. A notable example is Wikipedia, an online collaborative…

Hardy, Darren

2010-01-01

87

GEAR Tech-21 Geographic Coordinates  

E-print Network

GEAR Tech-21 Geographic Coordinates Throughout the activity, look for and record the definitions and two others on the grid below: Important Terms #12;GEAR Tech-21 Geographic Coordinates How Far Are They: Miles: #12;GEAR Tech-21 Geographic Coordinates Try It! Use the Satellites page on your handheld GPS

Farritor, Shane

88

GEOGRAPHIC NAMES INFORMATION SYSTEM (GNIS)  

EPA Science Inventory

The Geographic Names Information System (GNIS), developed by the U.S. Geological Survey in cooperation with the U.S. Board on Geographic Names (BGN), contains information about physical and cultural geographic features in the United States and associated areas, both current and h...

89

420?Lentil Allergy: First Report from Venezuela  

PubMed Central

Background Allergy to lentils is infrequent in Latin America: this a first case report from Venezuela. A 5 year old female preschooler attended our allergology clinic with chief complaint of generalized giant urticaria inmediately after ingestion of cooked lentils; clinical history revealed frequent (>3) emergency visits, since the age of one year, with facial angioedema and generalized urticaria even from inhalation of vapors while cooking of lentils at home; moreover, also symptoms described ocurred while eating foods containing chick peas; lentils, as other beans (black, red, chick), belong to the leguminosa family along with peanuts and coconut. Methods Prick lancetter skin tests (H-S) to a panel of 25 inhalant and food allergens (Diater Labs, Argentina) were performed along with Prick to Prick tests to raw and cooked lentils, chickpeas, black beans, navy beans and coconut. A papule >3 mm and read at 10 minutes was considered positive. Results All other allergens tested were negative, that is, epithelia, molds, cockroach, grasses, mosquito, milk, egg, wheat, fishmix, shrimp and other seafood, nuts, hazelnut, almond, coconut and blackbeans. Conclusions 1. Prick to Prick testing confirms specific IgE presence to Lentils; our patient could tolerate peanuts and cocunut. Positive prick test to peanuts likely represent a cross reaction1; 2. Lupin flour (Lupinus Albus), from the Leguminosa family, is found increasingly used in industrially prepared foods and could elicit symptoms due to cross reactions, and advice to family was given accordingly2; 3. This is the first case report from Venezuela.

Albarran, Carlos; Hulett, Arnaldo Capriles

2012-01-01

90

View of the Caribbean coast of Venezuela  

NASA Technical Reports Server (NTRS)

A near vertical view of the Caribbean coast of Venezuela is seen in this Skylab 3 Earth Resources Experiment Package S190-B (five-inch earth terrain camera) photograph taken from the Skylab space station in Earth orbit. The large body of water is the Golfo de Venezuela; and the major land mass is the Peninsula de Paraguana. The view is looking northward from the mouth of the Golfete de Coro and Punta Cardon to Punta Macolia. The peninsula is connected to the Venezuelan mainland by the narrow strip of land in the most easterly corner of the picture. The dry, arid climate of the peninsula is indicated by sparse vegetation and the abundance of sand dunes. The highest point is about 2,700 feet above the sea and is the conspicuous black spot. Old raised shorelines features appear as streaks parallel to the Golfete de Coro. Water of the Golfete de Coro is red from the high sediment content. The streaks in the water off the peninsula is apparently an effect of wind which is blowing sand and w

1973-01-01

91

Geographical Influences on Climate  

NSDL National Science Digital Library

In this lesson students use climatograms from different U.S. locations to observe patterns in temperature and precipitation. After describing geographical features near these locations, they will use graphs to compare and find patterns in the effects that mountains, oceans, elevation, and latitude have on temperature and precipitation. A research activity will then ask students to gather information on temperature and precipitation patterns around the world using the MY NASA DATA Live Access Server and other sources, with the goal of creating their own climatogram. This lesson uses the 5E instructional model.

92

Geographic Information Science Project  

NSDL National Science Digital Library

From Foothill College and the Using a Web-Based GIS to Teach Problem-Based Science in High School and College project, this pdf contains a syllabus for a course titled Geographic Information Science Project. The objective of the course is to introduce students to a variety of projects including "constructing a Web GIS site, building a GIS or image database, and conducting a GIS or remote sensing analysis." The project is the main component of the course and students gain significant experience working in teams.

93

Be dating of river terraces of Santo Domingo river, on Southeastern flank of the Mrida Andes, Venezuela: Tectonic and climatic  

E-print Network

, Venezuela d Escuela de Geología, Minas y Geofísica, Facultad de Ingeniería, Universidad Central de Venezuela Instituto de Ciencias de La Tierra, Universidad Central de Venezuela, Venezuela a r t i c l e i n f o de Grenoble 1, CNRS, F-38041 Grenoble, France g Universidad de Los Andes, Mérida, Venezuela h

94

Digital shaded-relief map of Venezuela  

USGS Publications Warehouse

The Digital Shaded-Relief Map of Venezuela is a composite of more than 20 tiles of 90 meter (3 arc second) pixel resolution elevation data, captured during the Shuttle Radar Topography Mission (SRTM) in February 2000. The SRTM, a joint project between the National Geospatial-Intelligence Agency (NGA) and the National Aeronautics and Space Administration (NASA), provides the most accurate and comprehensive international digital elevation dataset ever assembled. The 10-day flight mission aboard the U.S. Space Shuttle Endeavour obtained elevation data for about 80% of the world's landmass at 3-5 meter pixel resolution through the use of synthetic aperture radar (SAR) technology. SAR is desirable because it acquires data along continuous swaths, maintaining data consistency across large areas, independent of cloud cover. Swaths were captured at an altitude of 230 km, and are approximately 225 km wide with varying lengths. Rendering of the shaded-relief image required editing of the raw elevation data to remove numerous holes and anomalously high and low values inherent in the dataset. Customized ArcInfo Arc Macro Language (AML) scripts were written to interpolate areas of null values and generalize irregular elevation spikes and wells. Coastlines and major water bodies used as a clipping mask were extracted from 1:500,000-scale geologic maps of Venezuela (Bellizzia and others, 1976). The shaded-relief image was rendered with an illumination azimuth of 315? and an altitude of 65?. A vertical exaggeration of 2X was applied to the image to enhance land-surface features. Image post-processing techniques were accomplished using conventional desktop imaging software.

Garrity, Christopher P.; Hackley, Paul C.; Urbani, Franco

2004-01-01

95

Infected dogs as a risk factor in the transmission of human Trypanosoma cruzi infection in western Venezuela.  

PubMed

A total of 565 mongrel dogs from rural localities of Venezuela were examined by serological (DAT, IFAT and ELISA) and parasitological tests to address the status of Trypanosoma cruzi infection and to evaluate their role in the transmission of the infection to human population. The overall percentage of sero-positive infected dogs shown to be 67.6% (382/565):253 (61.7%) from 47 villages belonging to 8 states located at 4 different geographical regions of western Venezuela and 129 (33.5%) dogs from 48 households located in areas where Chagas disease is endemic. From 101 sampled dogs living in close proximity to 30 acute chagasic patients, 84% expressed specific anti-T. cruzi antibodies (Ab) with 12 of them (14%) showing blood circulating parasites (BCP). In these houses a high proportion of sero-positive people (20%) and frequent indoor infestation by triatomine-bugs (70%) was also recorded. The analysis revealed that from the 47 rural villages sampled during the study, 91.5% had the presence of T. cruzi sero-positive dogs, ranging from 62% positive localities at the states of Falcon and Cojedes to 100% in the other six studied Venezuelan states. This demonstrates that T. cruzi-infected dogs are found throughout all the geographical regions of western Venezuela irrespective of their ecological differences. Molecular typing of T. cruzi isolates from infected dogs using ribosomal and mini-exon gene markers, revealed the presence of both T. cruzi I and T. cruzi II lineages. The coincidence in the circulation of T. cruzi II in dog and human populations at the same locality and at the same time is reported and its significance is discussed. The combined serological, parasitological, epidemiological and molecular data is gathered here to call the attention on the presence of infected dogs as a risk factor in the maintenance of T. cruzi as a source for infection to humans. PMID:16797466

Crisante, Gladys; Rojas, Agustina; Teixeira, Marta M G; Añez, Nestor

2006-07-01

96

Tax effects upon oil field development in Venezuela  

E-print Network

Important reforms have been made to the oil sector tax code in Venezuela. Given its diversity of oil resources, there was a concern that some resources were not being exploited because of the structure of the tax code. ...

Manzano, Osmel

2000-01-01

97

New species and records of Hydroptilidae (Trichoptera) from Venezuela  

PubMed Central

Abstract Eight new species of Hydroptilidae (Trichoptera) from Venezuela are described: Acostatrichia digitata sp. n., Hydroptila cressae sp. n., Metrichia botrychion sp. n., Ochrotrichia spira sp. n., Oxyethira bettyae sp. n., Oxyethira quiramae sp. n., Oxyethira redunca sp. n., and Rhyacopsyche shorti sp. n.New country records for Venezuela of 2 additional species, Neotrichia feolai Santos & Nessimian, 2009 and Oxyethira picita Harris & Davenport, 1999, are also provided. Illustrations of male genitalia are provided with each description. PMID:22577311

Thomson, Robin E.; Holzenthal, Ralph W.

2012-01-01

98

A reservoir management strategy for multilayered reservoirs in eastern Venezuela  

E-print Network

A RESERVOIR MANAGEMENT STRATEGY FOR MULTILAYERED RESERVOIRS IN EASTERN VENEZUELA A Thesis by ARNALDO LEOPOLDO ESPINEL DIAZ Submitted to the Office of Graduate Studies of Texas A&M University in partial fu16llment of the requirements... for the degree of MASTER OF SCIENCE August 199B Major Subject: Petroleum Engineering A RESERVOIR MANAGEMENT STRATEGY FOR MULTILAYERED RESERVOIRS IN EASTERN VENEZUELA. A Thesis by ARNALDO LEOPOLDO ESPINEL DIAZ Submitted to the OI%ce of Graduate Studies...

Espinel Diaz, Arnaldo Leopoldo

1998-01-01

99

An investigation of rainfall variability and distribution in Venezuela  

E-print Network

AN INUESTIGATICN OF RAINFALL iJARI ABILITY AND DISTRIBUTILTN II'J VENEZUELA A Thesis By DONALD REID GIBSON Major United States Air Force Submitted to the Graduate College of the Texas AJIM University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 19SB Major Subject: ME IEOROLOGY AN INUESTI GATI ONi OF RAINFALL VARIABILITY AiND DISTRIBUTION IN VENEZUELA A ibeela By DONALD RETD GIBSON Major United States Air Force Approved as to style...

Gibson, Donald Reid

1968-01-01

100

Geographic names information system  

USGS Publications Warehouse

of the data in each of the data elements of the four data bases of GNIS. The GNIS program, which includes the automated names system and the National Gazetteer program, is a coordinated effort under the direction of Donald J. Orth, Chief of the Branch of Geographic Names. The automated system was initially developed by Sam Stulberg and Roger L. Payne. System enhancement and software development is coordinated by Judy J. Stella, head programmer for GNIS, and special projects coordinator is Louis A. Yost IV. Coordination of the research and compilation of certain gazetteers is directed by Robin D. Worcester with research assistance and support from Jon Campbell, Linda S. Davis, and Nancy Engel.

U.S. Geological Survey

1987-01-01

101

Analyzing geographic clustered response  

SciTech Connect

In the study of geographic disease clusters, an alternative to traditional methods based on rates is to analyze case locations on a transformed map in which population density is everywhere equal. Although the analyst's task is thereby simplified, the specification of the density equalizing map projection (DEMP) itself is not simple and continues to be the subject of considerable research. Here a new DEMP algorithm is described, which avoids some of the difficulties of earlier approaches. The new algorithm (a) avoids illegal overlapping of transformed polygons; (b) finds the unique solution that minimizes map distortion; (c) provides constant magnification over each map polygon; (d) defines a continuous transformation over the entire map domain; (e) defines an inverse transformation; (f) can accept optional constraints such as fixed boundaries; and (g) can use commercially supported minimization software. Work is continuing to improve computing efficiency and improve the algorithm. 21 refs., 15 figs., 2 tabs.

Merrill, D.W.; Selvin, S.; Mohr, M.S.

1991-08-01

102

Canadian Geographic Atlas Online  

NSDL National Science Digital Library

Online atlases vary widely in quality, but this latest project from the Royal Canadian Geographical Society is a laudable production both in terms of its organization and also its multi-layered content. This highly interactive atlas allows users to explore all of Canada's landforms and boundaries through a pop-up atlas browser that includes a sophisticated, yet easy-to-use, interface tool by which users can zoom in or out, measure distances, and even print out the maps they create. Some of the additional features let users explore the country thematically by region (such as the Boreal Shield) or by the dynamic theme of "Extremes of Weather". There is even a "Kid's Atlas", which is specifically designed for young people with the hope that they will also learn a great deal about Canadian places and geography. Much of the material on the site is also available in French.

103

National Geographic Traveler  

NSDL National Science Digital Library

The staff at the National Geographic Traveler magazine knows a thing or two about travel, and their print magazine is full of thoughtful suggestions about where to go in Providence, how to wander around in Bangkok, and the lighthouses of Croatia. Sprinkled across the top of the web page, visitors will find topical areas, which include "Photo of the Week", "Intelligent Travel Blog", and "Newsletter". The "Intelligent Travel Blog" is a great place to start, and there are posts on an annual worm charming festival in the United Kingdom and the value of travel for school-age children. The "Photo of the Week" features dhow boats racing, the Singapore waterfront, and other visual gems. Also, visitors can check out their archives, sign up to receive their newsletter, and subscribe to the print edition of the magazine.

104

National Geographic: Crittercam  

NSDL National Science Digital Library

What would it be like to be a harbor seal? Wouldn't it be fascinating to go on the prowl with lions? With assistance from the National Science Foundation and the National Geographic, Crittercam makes it possible, both on television and on this fine website. The Crittercam device (which fits safely and securely on animals) was initially conceived by Greg Marshall, who got the idea after observing a remora clinging onto a shark off the coast of Belize, and thought that it might be possible to attach a camera in a similar fashion. From the main page, visitors can learn about the Crittercam itself, and watch a number of clips of seals, lions, hawksbill turtles, and humpback whales in their natural environments. Moving to the Previews area, visitors can watch streaming clips from the television program as well. Finally, visitors can also download a screen saver that features a pilot whale.

105

National Geographic Xpeditions Atlas  

NSDL National Science Digital Library

This site offers a variety of geography education resources. The atlas allows the user to find and print black and white maps of any region of the world and customize the image to fit their needs. The forum provides a location for students, teachers, and the general public to discuss pertinent scientific and educational issues. The Xpedition Hall is an interactive museum that takes the user on geography journeys. The standards section describes all 18 of the National Geography Standards for purposes of instructing young geographers. The Activities section provides individual and group on and off-line learning activities and may used for classroom learning sessions. Lesson plans may be selected from the lesson index and can be categorized by the standard or aspect of geography you wish to teach. These lesson plans were written by educators and have been tested in the classroom.

106

National Geographic: Redwoods  

NSDL National Science Digital Library

Astounding, beautiful, fantastical, and enormous, these are all apt descriptions of the redwoods of the Pacific coast. National Geographic's website offers a multimedia presentation about these majestic trees which includes the cover story, "The Super Trees", from their October 2009 magazine, and details under "Tune In", on when to watch the corresponding broadcast "Explorer: Climbing Redwood Giants". In addition to an online photo "Jigsaw Puzzle" of a 300-foot California redwood that visitors can time themselves putting together, there is also a great 2.5-minute "Video" of the photographer's attempt to create a composite photo of an entire redwood tree. The "Living Giants" interactive time line shows the historical moments a 2000-year-old redwood has lived through, including the reign of Genghis Khan, the signing of the Magna Carta, and the settlement at Jamestown.

107

National Center for Geographic Information  

E-print Network

, California for their hospitality and for supporting a constructive and enjoyable working environment of geographic information among and within organizations. Participants were drawn from three major groups: Group

California at Santa Barbara, University of

108

Center of Excellence for Geographic Education South Carolina Geographic Alliance  

E-print Network

Center of Excellence for Geographic Education South Carolina Geographic Alliance Earthquakes in South Carolina: Bridging the Social and Science Divide for K-12 Educators Saturday, November 3, 2012 9:00 AM ­ 3:00 PM University of South Carolina Upstate, Spartanburg, South Carolina This one-day workshop

Almor, Amit

109

Adaptive Cartography and Geographical Education  

ERIC Educational Resources Information Center

The article focuses on adaptive cartography and its potential for geographical education. After briefly describing the wider context of adaptive cartography, it is suggested that this new cartographic approach establishes new demands and benefits for geographical education, especially in offering the possibility for broader individual…

Konecny, Milan; Stanek, Karel

2010-01-01

110

BIODIVERSITY Geographical linkages between threats  

E-print Network

BIODIVERSITY RESEARCH Geographical linkages between threats and imperilment in freshwater fish in the Mediterranean Basin Miguel Clavero1,2 *, Virgilio Hermoso3,4 , Noam Levin5 and Salit Kark3,6 INTRODUCTION With the current massive loss of biodiversity, understanding the geographical patterns in the distribution

Kark, Salit

111

National Center for Geographic Information  

E-print Network

was titled "Case Study Research Methods for Geographic Information Systems" (Onsrud, Pinto, and Azad 1992 Methodology for MIS Case Studies" (Lee 1989). The "Case Study Research Methods" paper was used subsequently, and B. Azad (1992) Case study research methods for geographic information systems. URISA Journal, 4(l

California at Santa Barbara, University of

112

Unscaled Scaled (% / km) Geographic Area /  

E-print Network

226 Unscaled Scaled (% / km) Geographic Area / Assessment Unit DI Prod. N(eq) Sum Total Cumu subbasin, Washington. Geographic Area / Assessment Unit IntegratedPriorityRestoration Category Habitat% (unscaled results) of the combined protection benefit for summer steelhead within the Methow basin, and 51

113

Geographic Perspectives of Air Transportation  

Microsoft Academic Search

Past, present, and future research directions and advances in this highly dynamic research area of air transportation are reviewed with an eye toward geographers' contributions to the air transportation industry. The study of air transportation within the field of transportation geography and the larger discipline of geography is important as geographers use air transportation to help describe concepts such as

Timothy M. Vowles

2006-01-01

114

Geographical Intelligence Michael F. Goodchild  

E-print Network

#12;Hidden synthesis · By experts in traditional authoritative production of geographic information into statements about polylines or polygons is typically hidden #12;New geographic information · Volunteered West (3m) · 909 West Campus Lane, Goleta, CA 93117, USA (20m) · 3811560N, 236150E, Zone 11, Northern

Fabrikant, Sara Irina

115

Determinants of Dentists' Geographic Distribution.  

ERIC Educational Resources Information Center

A model for explaining the geographic distribution of dentists' practice locations is presented and applied to particular market areas in Connecticut. Results show geographic distribution is significantly related to a few key variables, including demography, disposable income, and housing prices. Implications for helping students make practice…

Beazoglou, Tryfon J.; And Others

1992-01-01

116

Population structure of guppies in north-eastern Venezuela, the area of putative incipient speciation  

PubMed Central

Background Geographic barriers to gene flow and divergence among populations in sexual traits are two important causes of genetic isolation which may lead to speciation. Genetic isolation may be facilitated if these two mechanisms act synergistically. The guppy from the Cumaná region (within the Cariaco drainage) of eastern Venezuela has been previously described as a case of incipient speciation driven by sexual selection, significantly differentiated in sexual colouration and body shape from the common guppy, Poecilia reticulata. The latter occurs widely in northern Venezuela, including the south-eastern side of Cordillera de la Costa, where it inhabits streams belonging to the San Juan drainage. Here, we present molecular and morphological analyses of differentiation among guppy populations in the Cariaco and San Juan drainages. Our analyses are based on a 953 bp long mtDNA fragment, a set of 15 microsatellites (519 fish from 20 populations), and four phenotypic traits. Results Both microsatellite and mtDNA data showed that guppies inhabiting the two drainages are characterised by a significant genetic differentiation, but a higher proportion of the genetic variance was distributed among populations within regions. Most guppies in the Cariaco drainage had mtDNA from a distinct lineage, but we also found evidence for widespread introgression of mtDNA from the San Juan drainage into the Cariaco drainage. Phenotypically, populations in the two regions differed significantly only in the number of black crescents. Phenotypic clustering did not support existence of two distinct groupings, but indicated a degree of distinctiveness of Central Cumaná (CC) population. However, CC population showed little differentiation at the neutral markers from the proximate populations within the Cariaco drainage. Conclusions Our findings are consistent with only partial genetic isolation between the two geographic regions and indicate that the geographic barrier of Cordillera de la Costa has not played an important role in strengthening the incomplete pre-zygotic reproductive barrier between Cumaná and common guppy. Significant phenotypic differentiation between genetically similar (in terms of neutral variation) populations suggests that mate choice can maintain divergence at sexually selected traits despite gene flow. However, neither genetic nor phenotypic clustering supported delineation of two species within the region. PMID:24533965

2014-01-01

117

Geographical Database Integrity Validation  

NASA Technical Reports Server (NTRS)

Airport Safety Modeling Data (ASMD) was developed at the request of a 1997 White House Conference on Aviation Safety and Security. Politicians, military personnel, commercial aircraft manufacturers and the airline industry attended the conference. The objective of the conference was to study the airline industry and make recommendations to improve safety and security. One of the topics discussed at the conference was the loss of situational awareness by aircraft pilots. Loss of situational awareness occurs when a pilot loses his geographic position during flight and can result in crashes into terrain and obstacles. It was recognized at the conference that aviation safety could be improved by reducing the loss of situational awareness. The conference advised that a system be placed in the airplane cockpit that would provide pilots with a visual representation of the terrain around airports. The system would prevent airline crashes during times of inclement weather and loss of situational awareness. The system must be based on accurate data that represents terrain around airports. The Department of Defense and the National Imagery and Mapping Agency (NIMA) released ASMD to be used for the development of a visual system for aircraft pilots. ASMD was constructed from NIMA digital terrain elevation data (DTED).

Jacobs, Derya; Kauffman, Paul; Blackstock, Dexter

2000-01-01

118

Coloring geographical threshold graphs  

SciTech Connect

We propose a coloring algorithm for sparse random graphs generated by the geographical threshold graph (GTG) model, a generalization of random geometric graphs (RGG). In a GTG, nodes are distributed in a Euclidean space, and edges are assigned according to a threshold function involving the distance between nodes as well as randomly chosen node weights. The motivation for analyzing this model is that many real networks (e.g., wireless networks, the Internet, etc.) need to be studied by using a 'richer' stochastic model (which in this case includes both a distance between nodes and weights on the nodes). Here, we analyze the GTG coloring algorithm together with the graph's clique number, showing formally that in spite of the differences in structure between GTG and RGG, the asymptotic behavior of the chromatic number is identical: {chi}1n 1n n / 1n n (1 + {omicron}(1)). Finally, we consider the leading corrections to this expression, again using the coloring algorithm and clique number to provide bounds on the chromatic number. We show that the gap between the lower and upper bound is within C 1n n / (1n 1n n){sup 2}, and specify the constant C.

Bradonjic, Milan [Los Alamos National Laboratory; Percus, Allon [Los Alamos National Laboratory; Muller, Tobias [EINDHOVEN UNIV. OF TECH

2008-01-01

119

Geodetic control of neotectonics in Venezuela  

NASA Astrophysics Data System (ADS)

Net installations for measurements of movement started in 1973 along the Bocono Fault, which is the main fault in the Venezuelan Andes. Investigations of horizontal movements are made on three locations along this fault: Mucubaji at 3700 m height, Mitisus at 1700 m and Yacambu at 700 m. At Mucubaji there are two nets with 8 stations each and at Mitisus we have three nets represented by 29 stations. Each station has a concrete pillar with a forced centering device on top and has a 1-4 m 3 concrete plaform. These nets were measured several times, giving resulting difference vectors of a range of several cm. One of these nets is also a control net of a hydroelectrical Power Dam, installed near the fault trace. At Yacambu we have a 26 km extended tunnel net which is crossing the fault. This net was measured twice with difference vectors up to 6 cm. In the Maracaibo Basin Area the vertical component of subsidence due to oil extraction reaches 5 m as a result of continuous movements since 1925. Gravimetric research is also carried out over all the mentioned locations. In cooperation with the Universities of Hannover and Stuttgart and the German Geodetic Research Institute a programme was started to determine the geoid and deflections of the vertical in the high Andes mountains, especially around the Mucubaji fault site. Parallel to and in combination with these geodetic investigations seismological studies are carried out by a geophysical group from Merida University, Venezuela.

Henneberg, Heinz G.

1983-09-01

120

[Increasing difficulties for scientific publication in Venezuela].  

PubMed

A very important increase in the costs of the edition of scientific journals has taken place in Venezuela, due to difficulties in obtaining imported free acid paper and other materials used for handling documents. Like other journals, Investigaci6n Clinica has been considering switching completely to a digital publication format; however there are several reasons that prevent us to doing it at this time: the journal is distributed in printed form to many national institutions, which do not have immediate access to digital information. In addition, there exists a commitment of shipment of printed issues for some international indices and in exchange with other national and foreign journals, whose printed format we receive. Another important aspect is that our University maintains a weak technological platform that makes difficult the immediacy required for the interchange with authors and consulted referees of received papers; and there is a latent danger of limitations in the use of digital technologies, due to current national politic problems. Consequently, we need to continue with the printed format, but must reduce the amount of printed issues, so as not to limit the number of papers published in each edition. Nevertheless, there is an ever increasing number of contributions from foreign researches and Investigaci6n Clinica has been recently included in two new international indices, the SEIIC from Argentina and the Infobase Index from India, reasons that obligate us to maintain our levels of excellence and commitment to our authors and readers. PMID:24758096

Ryder, Elena

2014-03-01

121

David Meets Goliath on the Information Superhighway: Venezuela in the Context of the Electronic Communication Networks.  

ERIC Educational Resources Information Center

Discusses Venezuela's information and communications technology infrastructure and usage patterns; examines future networking plans; and addresses political and economic considerations linked to the information and technology problems in Venezuela and in Latin America in general. (LRW)

Sanchez-Vegas, Saadia

1995-01-01

122

Malaria control and elimination, Venezuela, 1800s –1970s.  

PubMed

Venezuela had the highest number of human malaria cases in Latin American before 1936. During 1891–1920,malaria was endemic to >600,000 km2 of this country; malaria death rates led to major population decreases during 1891–1920. No pathogen, including the influenza virus that caused the 1918 pandemic, caused more deaths than malaria during 1905–1945. Early reports of malaria eradication in Venezuela helped spark the world's interest in global eradication. We describe early approaches to malaria epidemiology in Venezuela and how this country developed an efficient control program and an approach to eradication.Arnoldo Gabaldón was a key policy maker during this development process. He directed malaria control in Venezuela from the late 1930s to the end of the 1970s and contributed to malaria program planning of the World Health Organization.We discuss how his efforts helped reduce the incidence of malaria in Venezuela and how his approach diverged from World Health Organization guidelines. PMID:25396258

Griffing, Sean M; Villegas, Leopoldo; Udhayakumar, Venkatachalam

2014-10-01

123

Malaria Control and Elimination,1 Venezuela, 1800s–1970s  

PubMed Central

Venezuela had the highest number of human malaria cases in Latin American before 1936. During 1891–1920, malaria was endemic to >600,000 km2 of this country; malaria death rates led to major population decreases during 1891–1920. No pathogen, including the influenza virus that caused the 1918 pandemic, caused more deaths than malaria during 1905–1945. Early reports of malaria eradication in Venezuela helped spark the world’s interest in global eradication. We describe early approaches to malaria epidemiology in Venezuela and how this country developed an efficient control program and an approach to eradication. Arnoldo Gabaldón was a key policy maker during this development process. He directed malaria control in Venezuela from the late 1930s to the end of the 1970s and contributed to malaria program planning of the World Health Organization. We discuss how his efforts helped reduce the incidence of malaria in Venezuela and how his approach diverged from World Health Organization guidelines.

Villegas, Leopoldo; Udhayakumar, Venkatachalam

2014-01-01

124

Feature article The application of Geographical Information  

E-print Network

: Environmental Impact Assessment; Significance of impacts; Spatial indices; Geographical Information Systems (GISFeature article The application of Geographical Information Systems to determine environmental and of the affected environment. The information generated by the use of Geographical Information Systems (GIS

Short, Daniel

125

33 CFR 166.103 - Geographic coordinates.  

Code of Federal Regulations, 2010 CFR

...FAIRWAYS General § 166.103 Geographic coordinates. Geographic coordinates expressed in terms of latitude or longitude, or both, are not intended...1983 (NAD 83), unless such geographic coordinates are expressly...

2010-07-01

126

33 CFR 165.8 - Geographic coordinates.  

Code of Federal Regulations, 2010 CFR

...AREAS General § 165.8 Geographic coordinates. Geographic coordinates expressed in terms of latitude or longitude, or both, are not intended...1983 (NAD 83), unless such geographic coordinates are expressly...

2010-07-01

127

33 CFR 166.103 - Geographic coordinates.  

Code of Federal Regulations, 2011 CFR

...FAIRWAYS General § 166.103 Geographic coordinates. Geographic coordinates expressed in terms of latitude or longitude, or both, are not intended...1983 (NAD 83), unless such geographic coordinates are expressly...

2011-07-01

128

33 CFR 165.8 - Geographic coordinates.  

Code of Federal Regulations, 2011 CFR

...AREAS General § 165.8 Geographic coordinates. Geographic coordinates expressed in terms of latitude or longitude, or both, are not intended...1983 (NAD 83), unless such geographic coordinates are expressly...

2011-07-01

129

An Interview with Margot Benacerraf: Reveron, Araya, and the Institutionalization of Cinema in Venezuela.  

ERIC Educational Resources Information Center

Presents an interview (edited into a first-person form) with Margot Benacerraf, known for two prize-winning films in the 1950s but not as well known for her active promotion of film culture in Venezuela. Discusses her education in Venezuela, travels outside Venezuela, production of her prize-winning films, and her efforts at promoting the…

Schwartzman, Karen

1993-01-01

130

Digital geologic map and GIS database of Venezuela  

USGS Publications Warehouse

The digital geologic map and GIS database of Venezuela captures GIS compatible geologic and hydrologic data from the 'Geologic Shaded Relief Map of Venezuela,' which was released online as U.S. Geological Survey Open-File Report 2005-1038. Digital datasets and corresponding metadata files are stored in ESRI geodatabase format; accessible via ArcGIS 9.X. Feature classes in the geodatabase include geologic unit polygons, open water polygons, coincident geologic unit linework (contacts, faults, etc.) and non-coincident geologic unit linework (folds, drainage networks, etc.). Geologic unit polygon data were attributed for age, name, and lithologic type following the Lexico Estratigrafico de Venezuela. All digital datasets were captured from source data at 1:750,000. Although users may view and analyze data at varying scales, the authors make no guarantee as to the accuracy of the data at scales larger than 1:750,000.

Garrity, Christopher P.; Hackley, Paul C.; Urbani, Franco

2006-01-01

131

Current Space Projects of the Bolivarian Republic of Venezuela  

NASA Astrophysics Data System (ADS)

Since 2008, with the successful launch of the first Venezuelan telecommunication satellite VENESAT-1, the Bolivarian Republic of Venezuela became an active player in the international space sector aimed at using space science and technology as a powerful tool to promote the national development. Based on that, through the Bolivarian Agency for Space Activities (ABAE), Venezuela has been implemented several space projects such as the manufacturing and launch of the first Venezuelan remote sensing satellite, the construction of a design center for small satellite technologies, as well as research and development activities related with the estimation of the physical properties of the Earth. This paper presents a brief description of the current space projects that are being developed by Venezuela.

Hernández, R.; Acevedo R.; Varela, F.; Otero, S.

2014-06-01

132

Syllidae (Annelida, Polychaeta) from the Caribbean coast of Venezuela  

PubMed Central

Abstract Venezuela possesses a great variety of coastal environments allowing for a high diversity of marine species. However, systematic studies on marine invertebrates are scarce, especially on polychaetes. The family Syllidae is poorly known, and only 14 genera and 42 species have been reported from this country. A total of 13 genera and 26 species the Syllidae were identified from benthic samples collected on different substrata of the northeastern coast of Venezuela. Of these, seven genera and 16 species constitute new records for Venezuela: Odontosyllis guillermoi, Syllides floridanus, Salvatoria clavata, Salvatoria limbata, Sphaerosyllis longicauda, Parapionosyllis longicirrata, Trypanosyllis parvidentata, Trypanosyllis vittigera, Opisthosyllis sp., Syllis amica, Syllis armillaris, Syllis gracilis, Syllis pseudoarmillaris, Syllis vittata, Parasphaerosyllis indica and Myrianida convoluta. PMID:21998503

Liñero-Arana, Ildefonso; Díaz Díaz, Oscarn

2011-01-01

133

PENNSYLVANIA GEOGRAPHIC INFORMATION SYSTEM LIBRARY  

EPA Science Inventory

PENNSYLVANIA GEOGRAPHIC INFORMATION SYSTEM (GIS) LIBRARY OFFERS AT A SCALE OF 1:24,000 FROM USGS TOPOGRAPHIC MAPS DIGITIZED COUNTY, COUNTY PARK, STATE PARK, AND STATE GAMELAND BOUNDARIES FOR THE COMMONWEALTH OF PENNSYLVANIA....

134

New techniques for geographic routing  

E-print Network

As wireless sensor networks continue to grow in size, we are faced with the prospect of emerging wireless networks with hundreds or thousands of nodes. Geographic routing algorithms are a promising alternative to tradition ...

Leong, Ben Wing Lup

2006-01-01

135

New Techniques for Geographic Routing  

E-print Network

As wireless sensor networks continue to grow in size, we are facedwith the prospect of emerging wireless networks with hundreds orthousands of nodes. Geographic routing algorithms are a promisingalternative to tradition ...

Leong, Ben

2006-06-14

136

Geographic Methodology and Classroom Structures  

ERIC Educational Resources Information Center

A structure for a class using the inquiry or problem-solving method of teaching is presented to maximize interaction between the members of the class. This structure involves geographic concepts of orientation, distance, shape and size of group. (Author)

Hudman, Lloyd E.

1972-01-01

137

Geographical Parthenogenesis: Opportunities for Asexuality  

Microsoft Academic Search

\\u000a Asexual organisms often occupy larger and more northern distribution areas than their sexual relatives. These phenomena, summarized\\u000a under the term “geographical parthenogenesis”, seem to confirm a short term advantage of asexual reproduction. Geographical\\u000a parthenogenesis may be explained by better colonizing abilities of asexual organisms, or by a swamping of sexual populations\\u000a because of introgression of asexuality. Asexual organisms may perform

Elvira Hörandl

138

Events affecting gold exploration in Venezuela since 1999  

USGS Publications Warehouse

The structure of the gold mining industry in Venezuela has changed significantly since 1999 as a result of Government policy changes and industry response to these changes. This report documents the policy decisions that have affected the mining industry, discusses the response of the industry on a site by site basis, and suggests possible effects of these changes on the global economy. For the short term, at least, it appears that these changes have made Venezuela a more difficult place to invest for U.S. and Canadian companies, while investment by Chinese entities has been encouraged.

Wilburn, David R.

2014-01-01

139

A new species of Corydalus Latreille from Venezuela (Megaloptera, Corydalidae)  

PubMed Central

Abstract A new species of dobsonfly, Corydalus wanningeri, from Venezuela, is described and illustrated. It superficially resembles Corydalus neblinensis Contreras-Ramos, with a uniform reddish coloration of body and wings. Yet, because of male genitalic structure it might be closely related to Corydalus crossi Contreras-Ramos. Specimens were collected from a rain forest transitional zone between the Orinoco lowlands and the Gran Sabana plateau, in Bolívar state. This is the 15th species of Corydalus to be recorded from Venezuela, rendering this the country with the highest number of documented Corydalus species. A key to the sexually dimorphic, long-mandibled Venezuelan species of the genus is provided. PMID:21594032

Contreras-Ramos, Atilano; von der Dunk, Klaus

2010-01-01

140

Evaluation of GO_CONS_GCF_2_TIM and GOCO01S Geopotential Models in Venezuela and Caribbean Region  

NASA Astrophysics Data System (ADS)

This paper shows two maps of the magnitude of the surface gravity vector (MSGV) of Venezuela and Caribbean region at 1:500.000 scale in the geographic window between the 0-20 north latitude and 74-58 western longitude (Fig. 1 and Fig. 2), that were generated from GOCE gravity gradients data provided by the European Space Agency (ESA). The maps that are showed come from the combined global gravity field model GOCO01s [GOCO Consortium., 2010] and from the satellite-only global gravity field model GO_CONS_GCF_2_TIM [Pail et al., 2010], both of 224 degree. The DEMs used for the evaluation of the MSGV are: Etopo2v2 [NGDC., 2006] and Etopo1 [Amante and Eakins, 2009] respectively. The data processing was done using: Shm2func [ICGEM., 2007]; Goce User Toolbox [ESA., 2009]; Gravsoft package [Tscherning et al., 1992] and Oasis Montaj (Geosoft). This research shows a review of observed gravity in the main geological provinces of the Venezuela and Caribbean region geography, revealing gravitational features important of the geological structures that are in Venezuelan and Caribbean subsurface.

Orihuela, N. D.; Garcia, A. D.; Tabare, T.; Scientific Team Of Venezuelan; Caribbean Crustal Study From Satellital Data

2010-12-01

141

Tectonothermal modeling of hydrocarbon maturation, Central Maracaibo Basin, Venezuela  

Microsoft Academic Search

The petroliferous Maracaibo Basin of northwestern Venezuela and extreme eastern Colombia has evolved through a complex geologic history. Deciphering the tectonic and thermal evolution is essential in the prediction of hydrocarbon maturation (timing) within the basin. Individual wells in two areas of the central basin, Blocks III and V, have been modeled to predict timing of hydrocarbon generation within the

M. Charles Manske

1996-01-01

142

Medical Genetics in Zulia, a State of Venezuela  

Microsoft Academic Search

Zulia is a state located in the northwest of Venezuela. Congenital malformations, deformities and chromosomal anomalies are the second cause of infant and neonatal mortality. There are seven public and private groups providing genetic services, the most important of which, the Medical Genetic Unit at the Zulia University was created in 1973. So far, this unit has provided genetic services

Sandra González-Ferrer; Lennie Pineda-Bernal; Wilmer Delgado-Luengo; Heber Villalobos-Cabrera

2004-01-01

143

Tinea Nigra: Report of Twelve Cases in Venezuela  

Microsoft Academic Search

Tinea nigra is a superficial mycotic infection produced by Hortaea werneckii, formerly known as Phaeoannelomyces werneckii, formerly known as Exophiala werneckii, and Stenella araguata, the latter autochthonous in Venezuela, it was first described and named as Cladosporium castellanii in 1973. The present report describes 12 cases in the period of 1972–2002, diagnosed at the Medical Mycology Section at the Tropical

Celina Perez; Maria Teresa Colella; Carolina Olaizola; Claudia Hartung de Capriles; Sylvia Magaldi; Sofia Mata-Essayag

2005-01-01

144

Study Abroad in Venezuela ON-SITE GUIDE 201415  

E-print Network

Study Abroad in Venezuela ON-SITE GUIDE 2014­15 S T U D Y A B R O A D THE AMERICAS #12;2 Important Names & Addresses In the United States Learning Abroad Center Study, Work, Intern, Volunteer, & Travel Abroad Center at 612.626.9000 at any time. If it is after business hours, there will be a recording

Weiblen, George D

145

Reseña histórica del vino en Venezuela, su control de calidad  

Microsoft Academic Search

For many generations wine has been very appreciated. In order to obtain wine of good quality, grape variety, soil and climatic conditions must be controlled. The final product must be analyzed to certificate its quality. In the present work we review the history of wine production in Venezuela, and describe the principles of the main physical -chemical analysis.

HUGO WALDEMAR; BIANCO DUGARTE; Y ANA LUISA MEDINA

146

Fruiting Capsule of a Pachira Species from Estado Amazonas, Venezuela  

NSDL National Science Digital Library

Fruiting capsule of a Pachira species from Estado Amazonas, Venezuela, which has been opened to show its large, floatable seeds. The seeds of other species in this genus of tropical trees are smaller and surrounded by dense, non-wettable hairs. Pachira is a member of the traditional family Bombacaceae, which like the Sterculiaceae and Tiliaceae has been found to be non-monophyletic.

Gustavo A. Romero

2004-03-09

147

Molecular Epidemiologic Source Tracking of Orally Transmitted Chagas Disease, Venezuela  

PubMed Central

Oral outbreaks of Chagas disease are increasingly reported in Latin America. The transitory presence of Trypanosoma cruzi parasites within contaminated foods, and the rapid consumption of those foods, precludes precise identification of outbreak origin. We report source attribution for 2 peri-urban oral outbreaks of Chagas disease in Venezuela via high resolution microsatellite typing. PMID:23768982

Segovia, Maikell; Martínez, Clara E.; Messenger, Louisa A.; Nessi, Anaibeth; Londoño, Juan C.; Espinosa, Raul; Martínez, Cinda; Alfredo, Mijares; Bonfante-Cabarcas, Rafael; Lewis, Michael D.; de Noya, Belkisyolé A.; Miles, Michael A.; Llewellyn, Martin S.

2013-01-01

148

A contribution to the centipede fauna of Venezuela (Chilopoda: Scolopendromorpha).  

PubMed

The descriptions of twelve Venezuelan Scolopendromorpha, a list of species, identification key and detailed list of localities are presented. Cryptops (C.) venezuelae Chamberlin, 1939, known only from the holotype has been re-described and Scolopendra conjungens Muralewicz, 1913 reduced to a junior synonym of Scolopendra angulata Newport, 1844 syn. nov. PMID:24989735

Schileyko, Arkady A

2014-01-01

149

ENTEROPARASITOSIS EN INDÍGENAS DE LA COMUNIDAD JAPRERÍA, ESTADO ZULIA, VENEZUELA  

Microsoft Academic Search

SUMMARY Parasitic diseases represent a medical, economic and social problem affecting all social classes, but mainly the lower socio- economic strata. In order to determine the prevalence of entero- parasites in the indians from the Japrería community, in the Perijá mountain, Zulia State, Venezuela, 191 fecal samples corresponding to individuals of both sexes, aged 1 month to 86 years were

Zulbey Rivero; Adriana Maldonado; Ángela Bracho; Jennifer Gotera; Ricardo Atencio; Marilyn Leal; Rosana Sánchez; Carolina Silva

2007-01-01

150

Late Pleistocene carbonate dissolution in the Venezuela Basin, Caribbean Sea  

SciTech Connect

Piston cores from water depths greater than 4000 m in the Venezuela Basin (Caribbean Sea) provide continuous late Pleistocene records of carbonate dissolution and accumulation. The authors examination of multiple dissolution indices indicate that, at least for the last 150,000 years, dissolution of carbonate in the Venezuela Basin has been more intense during interglacial than glacial periods, a pattern opposite to more general observations from the deep Atlantic and Gulf of Mexico. By virtue of its shallow sill depth (1815 m), the Venezuela Basin is relatively isolated from the mainstream of Atlantic thermohaline circulation, and presently is filled with homogeneous, relatively warm (3.8/sup 0/C) waters primarily derived from Upper North Atlantic Deep Water. During the last glacial, the enhanced preservation of carbonate in the Venezuela Basin suggests the presence of a less corrosive, more oxygenated water mass in the Atlantic near sill depth. However, this simple interpretations is potentially complicated by past changes in the rain of biogenic materials from surface waters to the deep basin in what must be an essentially closed system below sill depth. Their observations of increased interglacial dissolution may help to explain previously noted discrepancies in the local glacial to interglacial amplitude of delta/sup 18/O variations recorded by coccoliths and planktonic foraminifera.

Cofer-Shabica, N.B.; Peterson, L.C.

1985-01-01

151

MODIS detects oil spills in Lake Maracaibo, Venezuela  

Microsoft Academic Search

Starting December 2002, the oil industry operating in and around Lake Maracaibo in Venezuela suffered a series of accidents (Figure 1). Fires, the sinking of two barges, rupture of oil pipelines, spills from floating oil storage and transfer stations, and malfunctioning of oil extraction platforms led to extensive oil spills. Local and federal Venezuelan government oil industry experts directly observed

Chuanmin Hu; Frank E. Müller-Karger; Douglas Myhre; Brock Murch; Ana L. Odriozola; Gonzalo Godoy

2003-01-01

152

Poverty rates in Venezuela: getting the numbers right.  

PubMed

This article looks at household and individual poverty rates in Venezuela over the past seven years. For more than a year, the statement that poverty in Venezuela has increased under the government of President Hugo Chávez has appeared in scores of major newspapers, on major television and radio programs, and even in publications devoted to foreign policy. There are no data to support such statements, and in fact the available data show a decline in poverty for both individuals and households over the seven-year period: the percentage of people in poverty declined from 50 percent in the first quarter of 1999 to 43.7 percent in 2005. Further, there is no evidence to suggest any change in the methodology for measuring poverty during this period, as has been alleged in a number of reports. The article also examines briefly the impact of significant changes in non-cash benefits such as free health care, which are not taken into account in the measured poverty rate, on poor people in Venezuela. Finally, the authors look at how the mistakes in reporting on Venezuela's poverty rate were made; an appendix gives examples of mistakes in major media and foreign policy publications. PMID:17175848

Weisbrot, Mark; Sandoval, Luis; Rosnick, David

2006-01-01

153

[Epidemiology of ophidism in Venezuela (1996-2004)].  

PubMed

The data of accidents caused by snakebites in Venezuela, registered at the morbidity statistics of the Direction of Epidemiology and Strategic Analysis of the Ministry of Health and Social Development were analyzed. During the years of 1996-2004, 53,792 snakebites were registered in Venezuela (5,976 cases average per year), with a higher incidence during the year 2004 (7,486 incidents). Zulia reported the highest frequency of all the states (5,975 cases); meanwhile the Midwestern region, constituted by Lara, Portuguesa, Falc6n and Yaracuy states, had a higher morbidity for snake bites. The highest incidence, distributed per states was registered in Cojedes, during the year 2001, with 228.72 cases per 100,000 inhabitants. When it was determined by regions, the highest incidence occurred during the year 2004 at los Llanos with 63.81 per 100,000 inhabitants. The median of the incidence rate for Venezuela during the period was of 21.46 accidents per 100,000 inhabitants. The classification of the endemic areas for ophidism, according to the percentiles 23, 50, 75 and 90, organized the country in: (a) states and regions of very high endemicity, (b) high endemicity, (c) middle, (d) low and (e) very low endemicity. These epidemiological data indicated that the accidents caused by snakes constitute a collective health problem in Venezuela. PMID:23947002

De Sousa, Leonardo; Bastouri-Carrasco, Jessica; Matos, Mercedes; Borges, Adolfo; Bónoli, Stefano; Vásquez-Suárez, Aleikar; Guerrero, Belsy; Rodríguez-Acosta, Alexis

2013-06-01

154

Mycobacterium tuberculosis ecology in Venezuela: epidemiologic correlates of common spoligotypes and a large clonal cluster defined by MIRU-VNTR-24  

PubMed Central

Background Tuberculosis remains an endemic public health problem, but the ecology of the TB strains prevalent, and their transmission, can vary by country and by region. We sought to investigate the prevalence of Mycobacterium tuberculosis strains in different regions of Venezuela. A previous study identified the most prevalent strains in Venezuela but did not show geographical distribution nor identify clonal genotypes. To better understand local strain ecology, we used spoligotyping to analyze 1298 M. tuberculosis strains isolated in Venezuela from 1997 to 2006, predominantly from two large urban centers and two geographically distinct indigenous areas, and then studied a subgroup with MIRU-VNTR 24 loci. Results The distribution of spoligotype families is similar to that previously reported for Venezuela and other South American countries: LAM 53%, T 10%, Haarlem 5%, S 1.9%, X 1.2%, Beijing 0.4%, and EAI 0.2%. The six most common shared types (SIT's 17, 93, 605, 42, 53, 20) accounted for 49% of the isolates and were the most common in almost all regions, but only a minority were clustered by MIRU-VNTR 24. One exception was the third most frequent overall, SIT 605, which is the most common spoligotype in the state of Carabobo but infrequent in other regions. MIRU-VNTR homogeneity suggests it is a clonal group of strains and was named the "Carabobo" genotype. Epidemiologic comparisons showed that patients with SIT 17 were younger and more likely to have had specimens positive for Acid Fast Bacilli on microscopy, and patients with SIT 53 were older and more commonly smear negative. Female TB patients tended to be younger than male patients. Patients from the high incidence, indigenous population in Delta Amacuro state were younger and had a nearly equal male:female distribution. Conclusion Six SIT's cause nearly half of the cases of tuberculosis in Venezuela and dominate in nearly all regions. Strains with SIT 17, the most common pattern overall may be more actively transmitted and SIT 53 strains may be less virulent and associated with reactivation of past infections in older patients. In contrast to other common spoligotypes, strains with SIT 605 form a clonal group centered in the state of Carabobo. PMID:19660112

2009-01-01

155

Geographical Concentration The case of economics journals  

E-print Network

to the Journal Impact Factor (JIF). The results indicate that the use of a geographical concentration measure the geographic borders. Analyses of geographic distributions give us a complementary indicator of journal influence that can be read alongside the JIF and other indicators. Analyses of geographic distributions of e

Paris-Sud XI, Université de

156

National Geographic Features: Inside Tornadoes  

NSDL National Science Digital Library

The National Geographic describes Tim Samaras and two colleagues' success in observing the bottom 30 feet of a tornado with a wisely placed camera. While users can only read the entire article by purchasing the National Geographic, the multimedia materials are amazing. Users can view images of the storm chasers at work. Everyone will enjoy the videos of the storm chasers setting up, the tornado moving over the camera, and Tim Samaras's descriptions of storm chasers' lives and tools. The website offers facts about tornadoes as well as websites and books where users can find more information.

157

Analysing surnames as geographic data.  

PubMed

With most surname research undertaken within the fields of anthropology and population genetics, geographers have overlooked surnames as a credible data source. In addition to providing a review of recent developments in surname analysis, this paper highlights areas where geographers can make important contributions to advancing surname research, both in terms of its quality and also its applications. The review discusses the emerging applications for surname research, not least in the mining of online data, and ends by suggesting three future research themes to ensure the building momentum of surname research continues to grow across disciplines. PMID:25020015

Cheshire, James

2014-01-01

158

Evaluating geographic information systems technology  

USGS Publications Warehouse

Computerized geographic information systems (GISs) are emerging as the spatial data handling tools of choice for solving complex geographical problems. However, few guidelines exist for assisting potential users in identifying suitable hardware and software. A process to be followed in evaluating the merits of GIS technology is presented. Related standards and guidelines, software functions, hardware components, and benchmarking are discussed. By making users aware of all aspects of adopting GIS technology, they can decide if GIS is an appropriate tool for their application and, if so, which GIS should be used.

Guptill, Stephen C.

1989-01-01

159

Enhancing Geographic Knowledge through Literature.  

ERIC Educational Resources Information Center

Asserts that, although international understanding is essential for survival, most high school students do not acquire the necessary skills and knowledge for competing in the global community. Finds that geographic knowledge can be integrated into literature courses and includes exemplary lesson plans. (CFR)

Bolding, Robert A.; And Others

1994-01-01

160

Territorial Decentration and Geographic Learning.  

ERIC Educational Resources Information Center

Territorial decentration is a question of major significance to geographic educators. This paper reports the findings of a research project designed to determine the territorial decentration of an American sample of children. The primary purpose of the research was to determine if Piaget's territorial decentration stages are appropriate for…

Stoltman, Joseph P.

161

Geographic Proximity and Enrollment Competition.  

ERIC Educational Resources Information Center

The use of a measure of geographic proximity to help explain enrollment competition among postsecondary institutions was investigated. The measure, the number of miles between institutions, was obtained by determining the longitude and latitude coordinates for about 99% of the schools in the Higher Education General Information System universe.…

Zammuto, Raymond F.

162

Powerful Knowledge and Geographical Education  

ERIC Educational Resources Information Center

Michael Young has argued that pupils should be given access to "powerful knowledge." This article examines the extent to which his concept of powerful knowledge is applicable to geographical education, in particular to the study of urban geography. It explores the distinction Young makes between everyday and school knowledge, how this…

Roberts, Margaret

2014-01-01

163

SOIL SURVEY GEOGRAPHIC DATABASE (SSURGO)  

EPA Science Inventory

This data set is a digital soil survey and is the most detailed level of soil geographic data developed by the National Cooperative Soil Survey. This data set consists of georeferenced digital map data and computerized attribute data. The map data are in a 7.5 minute quadrangle ...

164

Gender Differences in Geographical Knowledge.  

ERIC Educational Resources Information Center

Among college undergraduates, males consistently outperform females on tests of geographical knowledge. That difference may be caused by the fact that women have had less active control over distances and directions traveled in their lives, and thus less interest in learning about them. This may change as women's roles in society change. (PS)

Beatty, William W.; Troster, Alexander I.

1987-01-01

165

Maps and Geographic Information Systems  

Cancer.gov

This list provides links to maps and geographic information system (GIS) resources that may be of interest to cancer epidemiologists, but is not exhaustive. Access to resources is dependent on procedures outlined for each individual resource. Availability of data may depend on suitability of proposed research, collaboration with study investigators, ethical considerations, or approval from a steering committee.

166

Geographic routing without location information  

Microsoft Academic Search

For many years, scalable routing for wireless communication systems was a compelling but elusive goal. Recently, several routing algorithms that exploit geographic information (e.g. GPSR) have been proposed to achieve this goal. These algorithms refer to nodes by their location, not address, and use those coordinates to route greedily, when possible, towards the destination. However, there are many situations where

Ananth Rao; Sylvia Ratnasamy; Christos Papadimitriou; Scott Shenker; Ion Stoica

2003-01-01

167

A new species of Coespeletia (Asteraceae, Millerieae) from Venezuela  

PubMed Central

Abstract A new species of Coespeletia from the páramos of Mérida (Venezuela) is described here. This species, named Coespeletia palustris, is found in a few marshy areas of the páramo. It is closely related to C. moritziana, but differs from it in a smaller number of florets in the capitula, larger ray flowers with longer ligulae and longer linguiform appendages, smaller pollen grains, larger cypselae, ebracteate scapes, leaves and inflorescences with more whitish indumentum, larger leaf sheaths, and marshy habitat. PMID:24399890

Diazgranados, Mauricio; Morillo, Gilberto

2013-01-01

168

Two new Larainae species from Guayana region, Venezuela (Coleoptera: Elmidae).  

PubMed

Two new species of the subfamily Larainae (Insecta: Coleoptera: Elmidae), Hexanchorus angeli n. sp. and Hypsilara autanai n. sp., are described from Guyana region in Venezuela. We provide habitus photographs, detail drawings of both male and female genitalia, and description of morphological features important for discrimination of the new species. Molecular differences within genera were measured using 816bp fragment of mtDNA gene for cytochrome oxidase c subunit I. Sequence divergences among species are discussed. PMID:24872290

Laššová, Kristína; Ciampor, Fedor; Ciamporová-Za?ovi?ová, Zuzana

2014-01-01

169

Curie point depth in Venezuela and the Eastern Caribbean  

NASA Astrophysics Data System (ADS)

We estimate the Curie point depth (CPD) variations of Venezuela (continental crust, South American plate) and the Eastern Caribbean (oceanic crust, Caribbean Plate) by using spectral analysis of the magnetic anomalies, extracted from the 2010 Enhanced Magnetic Model (EMM2010), available at the National Oceanic and Atmospheric Administration (NOAA). To test the reliability of the spectral content of this model, for a small region, we compare he CPD derived from the EMM2010 against the one from aeromagnetic data. We also compile heat flow data from previous studies to correlate them with the CPD lateral variations. The estimations show that the CPD in Venezuela and the Eastern Caribbean ranges between 54 and 17 km. The mean depth value within the continental crust is around 38 km. On the Guayana Shield, it has a mean value of 42 km and reaches a maximum of 54 km. As the Moho depth is at most 50 km, the upper mantle beneath the craton is magnetized. Continental lateral variations appear to be linked to the isostatic state and age of the different provinces, and mark the limit between the Precambrian and the Paleozoic provinces. The Maracaibo Basin is revealed as a thermally stable one with a constant CPD, while the Eastern Venezuela Basin is thermally affected. Most of the Eastern Caribbean seems stable, with a large non-perturbed area with a mean CPD value of 23 km. As the crustal thickness is at most 20 km, the isotherm is located within the upper mantle. A CPD minimum located on the Lesser Antilles arc is concentrated in its northern part, and can be related to the subduction zone that is most active. Finally, a shallow area within the Eastern Caribbean corresponds to the thin crust region in the Venezuela Basin, although it might be linked to mantle dynamics.

Arnaiz-Rodríguez, Mariano S.; Orihuela, Nuris

2013-04-01

170

Efectos del control cambiario en la actividad turística. Caso Venezuela  

Microsoft Academic Search

RESUMEN El 2 de diciembre de 2002, las reservas internacionales de Venezuela ascendían a US$12.447 millones y el 31 de diciembre del mismo año cayeron a US$11.873 millones. En consecuencia, el Gobierno estableció un régimen de control cambiario y creó la Comisión de Administración de Divisas. En este artículo se estudian los efectos de esta medida en el sector turístico,

2007-01-01

171

Radioisotope Concentration in Lake Sediments of Maracaibo, Venezuela  

NASA Astrophysics Data System (ADS)

Maracaibo Lake is one of the most important water basing and oil producing regions in Venezuela. Changes in the local environment have been monitored for chemical pollution in the past. For this study we selected a set of sediment samples collected in the shore and analyzed for its radioisotope content. Results show the gamma emitting isotopes distribution. Isotopes concentrations have been determined within the natural K, Th and U families.

Salas, A. Rangel; Viloria, T.; Sajo-Bohus, L.; Barros, H.; Greaves, E. D.; Palacios, D.

2007-10-01

172

Venezuela and Education Transformation for the Development of the People  

Microsoft Academic Search

\\u000a To write about education in Venezuela in only one chapter is indeed challenging, maybe even more challenging than the huge\\u000a changes that have occurred in the education system especially in the last ten years. Before 1999, there were changes marked\\u000a by the country’s historical development (López de D’Amico and González 2006), nevertheless the changes that have taken place\\u000a in the

Rosa López de D’Amico; Maritza Loreto; Orlando Mendoza

173

Use of molluscicides in the control of bilharziasis in Venezuela*  

PubMed Central

The application of molluscicides to the breeding-places of Australorbis glabratus—the intermediate host of Schistosoma mansoni in Venezuela—is discussed, with special reference to the equipment required and the techniques employed. The characteristics of the three molluscicides in use—copper sulfate, sodium pentachlorophenate, and copper pentachlorophenate—are outlined, and the treatment both of running waters (irrigation canals and streams) and of still waters (ponds and marshes) is described in detail. PMID:13356139

Jove, José Antonio

1956-01-01

174

Sesin 3 -Sistemas Distribuidos y Aplicaciones Mdicas 89 Escuela de Computacin Universidad Central de Venezuela UCV  

E-print Network

Computación Universidad Central de Venezuela UCV #12;Sesión 3 - Sistemas Distribuidos y Aplicaciones Médicas 91 Escuela de Computación Universidad Central de Venezuela UCV #12;II Simposio Científico y Tecnológico en Computación 201292 Escuela de Computación Universidad Central de Venezuela UCV #12;Sesión 3

Coto, Ernesto

175

Diversity and composition of dengue virus type 2 in Venezuela.  

PubMed

Dengue is a mosquito-borne disease caused by four closely related dengue virus (genus Flavivirus)serotypes (DENV-1–4). The clinical outcomes vary from mild febrile illness to life-threatening haemorrhagic manifestations. DENVs are endemic in the tropics and subtropics globally and currently no specific treatment or vaccines are available. In Venezuela, the American-Asian genotype of DENV-2 is the most prevalent and has been associated with severe disease outcomes.We aimed to follow-up the molecular epidemiology of DENV-2 in Venezuela to investigate if the evolution of the virus has remained the same throughout time or if the same dynamics documented in Brazil (hyperendemic co-circulation) also occurred. The results show that whereas the epidemiology of DENV in several endemic areas is characterized by serotype replacements through time, in Venezuela the American-Asian genotype DENV-2 has evolved into several genetic lineages and has remained in hyperendemic co-circulation with the other serotypes. PMID:23110744

Huhtamo, E; Comach, G; Sierra, G; Camacho, D E; Sironen, T; Vapalahti, O; Uzcátegui, N Y

2013-09-01

176

47 CFR 10.450 - Geographic targeting.  

Code of Federal Regulations, 2012 CFR

...COMMUNICATIONS COMMISSION GENERAL COMMERCIAL MOBILE ALERT SYSTEM Alert Message Requirements § 10.450 Geographic targeting...establishes minimum requirements for the geographic targeting of Alert Messages. A Participating CMS Provider will...

2012-10-01

177

47 CFR 10.450 - Geographic targeting.  

Code of Federal Regulations, 2013 CFR

...COMMUNICATIONS COMMISSION GENERAL WIRELESS EMERGENCY ALERTS Alert Message Requirements § 10.450 Geographic targeting...establishes minimum requirements for the geographic targeting of Alert Messages. A Participating CMS Provider will...

2013-10-01

178

47 CFR 10.450 - Geographic targeting.  

Code of Federal Regulations, 2014 CFR

...COMMUNICATIONS COMMISSION GENERAL WIRELESS EMERGENCY ALERTS Alert Message Requirements § 10.450 Geographic targeting...establishes minimum requirements for the geographic targeting of Alert Messages. A Participating CMS Provider will...

2014-10-01

179

Where Is "Away"?--A Geographic Concept.  

ERIC Educational Resources Information Center

Provides a lesson plan on the geographic and civic aspects of municipal wastes. Offers action activities for students. Maintains that students will become familiar with the geographic, moral, and political features of municipal waste disposal. (RW)

Fernald, Edward A; Allen, Rodney F.

1990-01-01

180

Geographic Trends in Invasive Candidiasis  

Microsoft Academic Search

Candida species are one of the most important causes of bloodstream infection (BSI) in tertiary-care hospitals worldwide. The incidence\\u000a of candidemia and the Candida species causing these infections may vary geographically. Although C. albicans remains the species most commonly isolated, there is clear evidence showing increasing rates of BSI caused by Candida non-albicans species around the world. C. glabrata is

Angela S. Nishikaku; Analy S. A. Melo; Arnaldo L. Colombo

2010-01-01

181

Seminar in Geographical Information Systems  

NSDL National Science Digital Library

This is the syllabus to a graduate-level course concerned with the study of current trends in geographically oriented information processing systems. The syllabus is organized around daily topics for which additional readings, notes, and web sites are available as supplemental learning materials. Topics covered include theoretical perspectives of GIS, ontology, uncertainty in GIS, spatial analysis, geospatial data mining and knowledge discovery, communication, visualization, generalization, geolibraries, scale, time representation, terrain representation, GIScience, and finally, GIS and Society.

Goodchild, Michael F.

182

Geographic names of the Antarctic  

USGS Publications Warehouse

This gazetteer contains 12,710 names approved by the United States Board on Geographic Names and the Secretary of the Interior for features in Antarctica and the area extending northward to the Antarctic Convergence. Included in this geographic area, the Antarctic region, are the off-lying South Shetland Islands, the South Orkney Islands, the South Sandwich Islands, South Georgia, Bouvetøya, Heard Island, and the Balleny Islands. These names have been approved for use by U.S. Government agencies. Their use by the Antarctic specialist and the public is highly recommended for the sake of accuracy and uniformity. This publication, which supersedes previous Board gazetteers or lists for the area, contains names approved as recently as December 1994. The basic name coverage of this gazetteer corresponds to that of maps at the scale of 1:250,000 or larger for coastal Antarctica, the off-lying islands, and isolated mountains and ranges of the continent. Much of the interior of Antarctica is a featureless ice plateau. That area has been mapped at a smaller scale and is nearly devoid of toponyms. All of the names are for natural features, such as mountains, glaciers, peninsulas, capes, bays, islands, and subglacial entities. The names of scientific stations have not been listed alphabetically, but they may appear in the texts of some decisions. For the names of submarine features, reference should be made to the Gazetteer of Undersea Features, 4th edition, U.S. Board on Geographic Names, 1990.

U.S. Board on Geographic Names; U.S. Geological Survey; Defense Mapping Agency; National Science Foundation

1995-01-01

183

Geographical clustering of Trypanosoma cruzi I groups from Colombia revealed by low-stringency single specific primer-PCR of the intergenic regions of spliced-leader genes.  

PubMed

A low-stringency single-primer polymerase chain reaction (LSSP-PCR) typing procedure targeted to the intergenic regions of spliced-leader genes (SL) was designed to profile Trypanosoma cruzi I stocks from endemic regions of Colombia. Comparison between SL-LSSP-PCR profiles of parasite DNA from vector faeces and cultures isolated from those faeces showed more conservative signatures than profiles using LSSP-PCR targeted to the minicircle variable regions (kDNA). This was also observed by analysing 15 parasite clones from one stock as well as serial samples of a same stock after in vitro culturing or inoculation into mice. Thus, SL-LSSP-PCR appears more appropriate than kDNA-LSSP-PCR for reliable typing of major T. cruzi I groups from in vitro cultured stocks and triatomine faeces. SL-LSSP-PCR grouped 46 of 47 T. cruzi I Colombian stocks according to their geographical procedences in four clusters: Cluster Cas from Casanare Department, Cluster Mg from Northern Magdalena department, Cluster Mom from Momposina Depression in Southern Magdalena and finally Cluster NW from northwestern Colombia, including Sucre, Chocó, Córdoba and Antioquia departments. Sequence analysis identified punctual mutations among amplicons from each cluster. Within Cluster Mg, sequence polymorphism allowed association with different sylvatic vector species. Novel SL sequences and LSSP-PCR profiles are reported from T. cruzi I infecting Eratyrus cuspidatus, Panstrongylus geniculatus and Rhodnius pallescens vectors. PMID:18850114

Mejía-Jaramillo, Ana María; Arboleda-Sánchez, Sair; Rodríguez, Ingrid Bibiana; Cura, Carolina; Salazar, Alexander; Del Mazo, Jesús; Triana-Chávez, Omar; Schijman, Alejandro Gabriel

2009-01-01

184

Geologic map of the Venezuela part of the Puerto Ayacucho 2 degrees x 3 degrees Quadrangle, Amazonas Federal Territory, Venezuela  

USGS Publications Warehouse

This map is one of a series of 1:500,000-scale maps that, along with several other products, stems from a cooperative agreement between the U.S. Geological Survey (USGS) and the Corporacion Venezolana de Guayana, Tecnica Minera, C.A. (TECMIN), a Venezuelan Government-owned mining and mineral exploration company. The agreement covered cooperative work carried out in the Precambrian Shield of southern Venezuela during 1987-1991 and included a geologic and mineral resource inventory, technology transfer, and scientific training (Wynn and others, in press). The Precambrian Guayana Shield (Escudo de Guyana, not to be confused with the neighboring country of Guyana) includes some of the oldest known rocks in the world (Mendoza, 1977) and also covers parts of neighboring Guyana, Surinam, French Guiana, Columbia, and Brazil. In Venezuela, it underlies most of Bolivar state and all of the Amazonas Federal Territory (see index map).

Wynn, Jeffrey C.; Olmore, Steven D.; Mendoza, Vicente; García, Andrés; Rendon, Ines; Estanga, Yasmin; Rincon, Haydee; Martinez, Felix; Lugo, Elis; Rivero, Nelson; Schruben, Paul G.

1994-01-01

185

Connecting geographical distributions with population processes  

E-print Network

and variances in population abundance for a variety of species indicate that the second mode of geographicalREPORT Connecting geographical distributions with population processes Brian A. Maurer1 * and Mark 59717, U.S.A. *Correspondence: E-mail: maurerb@msu.edu Abstract The geographical distribution

Maurer, Brian A.

186

Adding geographic scopes to web resources  

Microsoft Academic Search

Many Web pages are rich in geographic information and primarily relevant to geographically limited communities. However, existing IR systems only recently began to offer local services and largely ignore geo-spatial information. This pa- per presents our work on automatically identifying the geographical scope of Web documents, which provides the means to develop retrieval tools that take the geo- graphical context

Mário J. Silva; Bruno Martins; Marcirio Silveira Chaves; Ana Paula Afonso; Nuno Cardoso

2006-01-01

187

Research and Research Methods in Geographical Education.  

ERIC Educational Resources Information Center

This collection of papers examines research methods in geographical education in nine countries. "Research Methods in the History of Geographical Education" (William Marsden, the United Kingdom) examines the methods used and some of the research undertaken in the history of geographical education. "Research Methods in Investigating Children's and…

Graves, Norman J., Ed.

188

Interruption of Onchocerca volvulus transmission in Northern Venezuela  

PubMed Central

Background Onchocerciasis is caused by Onchocerca volvulus and transmitted by Simulium species (black flies). In the Americas, the infection has been previously described in 13 discrete regional foci distributed among six countries (Brazil, Colombia, Ecuador, Guatemala, Mexico and Venezuela) where more than 370,000 people are currently considered at risk. Since 2001, disease control in Venezuela has relied on the mass drug administration to the at-risk communities. This report provides empirical evidence of interruption of Onchocerca volvulus transmission by Simulium metallicum in 510 endemic communities from two Northern foci of Venezuela, after 10–12 years of 6-monthly Mectizan® (ivermectin) treatment to all the eligible residents. Methods In-depth entomologic and epidemiologic surveys were serially conducted from 2001–2012 in selected (sentinel and extra-sentinel) communities from the North-central (NC) and North-east (NE) onchocerciasis foci of Venezuela in order to monitor the impact of ivermectin treatment. Results From 2007–2009, entomological indicators in both foci confirmed that 0 out of 112,637 S. metallicum females examined by PCR contained L3 infection in insect heads. The upper bound of the 95% confidence intervals of the infective rate of the vector reached values below 1% by 2009 (NC) and 2012 (NE). Additionally, after 14 (NC) and 22 (NE) rounds of treatment, the seasonal transmission potential (±UL CIs) of S. metallicum was under the critical threshold of 20 L3 per person per season. Serological analysis in school children < 15 years-old demonstrated that 0 out of 6,590 individuals were harboring antibodies to Ov-16. Finally, epidemiological surveys made during 2010 (NC) and 2012 (NE) showed no evidence of microfilariae in the skin and eyes of the population. Conclusions These results meet the WHO criteria for absence of parasite transmission and disease morbidity in these endemic areas which represent 91% of the population previously at-risk in the country. Consequently, the two Northern foci are currently under post-treatment onchocerciasis surveillance status in Venezuela. PMID:24499653

2013-01-01

189

Radioactive source materials in Los Estados Unidos de Venezuela  

USGS Publications Warehouse

This report summarizes the data available on radioactive source materials in Los Estados Unidos de Venezuela accumulated by geologists of the Direccions Tecnica de Geolgia and antecedent agencies prior to June 1951, and the writers from June to November 1951. The investigation comprised preliminary study, field examination, office studies, and the preparation of this report, in which the areas and localities examined are described in detail, the uranium potentialities of Venezuela are summarized, and recommendations are made. Preliminary study was made to select areas and rock types that were known or reported to be radioactive or that geologic experience suggests would be favorable host for uranium deposits, In the office, a study of gamma-ray well logs was started as one means of amassing general radiometric data and of rapidly scanning many of ye rocks in northern Venezuela; gamma-ray logs from about 140 representative wells were examined and their peaks of gamma intensity evaluated; in addition samples were analyzed radiometrically, and petrographically. Radiometic reconnaissance was made in the field during about 3 months of 1951, or about 12 areas, including over 100 localities in the State of Miranda, Carabobo, Yaracuy, Falcon, Lara, Trujillo, Zulia, Merida, Tachira, Bolivar, and Territory Delta Amacuro. During the course of the investigation, both in the filed and office, information was given about geology of uranium deposits, and in techniques used in prospecting and analysis. All studies and this report are designed to supplement and to strengthen the Direccion Tecnica de Geologias's program of investigation of radioactive source in Venezuela now in progress. The uranium potentialities of Los Estados de Venezuela are excellent for large, low-grade deposits of uraniferous phospahtic shales containing from 0.002 to 0.027 percent uranium; fair, for small or moderate-sized, low-grade placer deposits of thorium, rare-earth, and uranium minerals; poor, for high-grade hydrothermal pitchblende deposits; and highly possible for small, medium- to high-grade despots of carnotite-or copper-uranium bearing sandstone. Recommendations for the Venezuelan uranium program include 1) the systematic collection of a mass general radiometric data by examining sample collections, expanding the gamma-ray program, encouraging the use of Geiger counter by field geologists, and by enlisting the aid of the general public; 2) , the examination of specific areas or localities, chosen on the basis of geologic favorability from the results of the amassing of data, or obtained by hints and rumors; 3), the organization of a unit within the Direccion Tecnica de Geologica to direct, collection, and collate metric data. It is emphasized that to be most fruitful the program requires the application of sounds and imaginative geologic theory.

Wyant, Donald G.; Sharp, William N.; Rodriguez, Carlos Ponte

1953-01-01

190

Potential geographical distribution of the red palm mite in South America.  

PubMed

Among pests that have recently been introduced into the Americas, the red palm mite, Raoiella indica Hirst (Prostigmata: Tenuipalpidae), is the most invasive. This mite has spread rapidly to several Caribbean countries, United States of America, Mexico, Venezuela, Colombia and Brazil. The potential dispersion of R. indica to other regions of South America could seriously impact the cultivation of coconuts, bananas, exotic and native palms and tropical flowers such as the Heliconiaceae. To facilitate the development of efficacious R. indica management techniques such as the adoption of phytosanitary measures to prevent or delay the dispersion of this pest, the objective of this paper was to estimate the potential geographical distribution of R. indica in South America using a maximum entropy model. The R. indica occurrence data used in this model were obtained from extant literature, online databases and field sampling data. The model predicted potential suitable areas for R. indica in northern Colombia, central and northern Venezuela, Guyana, Suriname, east French Guiana and many parts of Brazil, including Roraima, the eastern Amazonas, northern Pará, Amapá and the coastal zones, from Pará to north of Rio de Janeiro. These results indicate the potential for significant R. indica related economic and social impacts in all of these countries, particularly in Brazil, because the suitable habitat regions overlap with agricultural areas for R. indica host plants such as coconuts and bananas. PMID:23297112

Amaro, George; de Morais, Elisangela Gomes Fidelis

2013-07-01

191

National Geographic: Forces of Nature  

NSDL National Science Digital Library

This National Geographic offers entertaining Macromedia Flash Player enhanced tutorials about natural disasters. Students can make their own earthquake, discover why a volcano erupts, build a tropical cyclone, find out the characteristics of a tornado, and more. The website offers facts on historically large events as well as key information about earthquakes, volcanoes, tornados, and hurricanes. The simple glossary helps users understand the scientific terms presented throughout the modules. Educators and parents can find fun activities and lessons for all grade levels such as Twister Tracking and the Power of Fire.

192

Cultural and Historical Geographies of Geographical focus: UK  

E-print Network

& Opportunities Geographical focus: UK Award: £134,176 Genetics, Genomics and Genetic Modification Geographical Geographical focus: UK Award: £3,963 Weather Walks, Weather Talks Geographical focus: North Pennines Award: £72

Nottingham, University of

193

47 CFR 27.904 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2014 CFR

... false Geographic partitioning and spectrum disaggregation. 27.904 Section...27.904 Geographic partitioning and spectrum disaggregation. An entity that acquires...MHz band licensee's geographic area or spectrum subject to a geographic...

2014-10-01

194

47 CFR 27.805 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2012 CFR

... false Geographic partitioning and spectrum disaggregation. 27.805 Section...27.805 Geographic partitioning and spectrum disaggregation. An entity that acquires...GHz band licensee's geographic area or spectrum subject to a geographic...

2012-10-01

195

47 CFR 27.904 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2011 CFR

... false Geographic partitioning and spectrum disaggregation. 27.904 Section...27.904 Geographic partitioning and spectrum disaggregation. An entity that acquires...MHz band licensee's geographic area or spectrum subject to a geographic...

2011-10-01

196

47 CFR 27.904 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2013 CFR

... false Geographic partitioning and spectrum disaggregation. 27.904 Section...27.904 Geographic partitioning and spectrum disaggregation. An entity that acquires...MHz band licensee's geographic area or spectrum subject to a geographic...

2013-10-01

197

47 CFR 27.805 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2010 CFR

... false Geographic partitioning and spectrum disaggregation. 27.805 Section...27.805 Geographic partitioning and spectrum disaggregation. An entity that acquires...GHz band licensee's geographic area or spectrum subject to a geographic...

2010-10-01

198

47 CFR 27.805 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2011 CFR

... false Geographic partitioning and spectrum disaggregation. 27.805 Section...27.805 Geographic partitioning and spectrum disaggregation. An entity that acquires...GHz band licensee's geographic area or spectrum subject to a geographic...

2011-10-01

199

47 CFR 27.805 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2013 CFR

... false Geographic partitioning and spectrum disaggregation. 27.805 Section...27.805 Geographic partitioning and spectrum disaggregation. An entity that acquires...GHz band licensee's geographic area or spectrum subject to a geographic...

2013-10-01

200

47 CFR 27.904 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2012 CFR

... false Geographic partitioning and spectrum disaggregation. 27.904 Section...27.904 Geographic partitioning and spectrum disaggregation. An entity that acquires...MHz band licensee's geographic area or spectrum subject to a geographic...

2012-10-01

201

47 CFR 27.805 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2014 CFR

... false Geographic partitioning and spectrum disaggregation. 27.805 Section...27.805 Geographic partitioning and spectrum disaggregation. An entity that acquires...GHz band licensee's geographic area or spectrum subject to a geographic...

2014-10-01

202

47 CFR 27.904 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2010 CFR

... false Geographic partitioning and spectrum disaggregation. 27.904 Section...27.904 Geographic partitioning and spectrum disaggregation. An entity that acquires...MHz band licensee's geographic area or spectrum subject to a geographic...

2010-10-01

203

25 CFR 37.110 - Who determines geographic attendance areas?  

Code of Federal Regulations, 2010 CFR

... false Who determines geographic attendance areas? 37.110 Section 37.110...EDUCATION GEOGRAPHIC BOUNDARIES All Schools § 37.110 Who determines geographic attendance areas? The Tribal governing body or the Secretary determines geographic attendance...

2010-04-01

204

Comet Halleys Legacy: SUNA, Astronomy from Universidad Central de Venezuela (U.C.V.)  

Microsoft Academic Search

The Sociedad Universitaria de Astronomia (SUNA) is a group of astronomy amateurs which works inside the Universidad Central de Venezuela (Venezuelas Central University)s campus. The initiative is originated during the path through the perihelion of Comet Halley in 1986, and since then their goals are promotion of astronomical information to all the university community. Observational works are also carried out,

Gabriel Romero; Nelson Fernandez

2007-01-01

205

Nutrición mineral en sistemas ganaderos de las sabanas centrales de Venezuela  

Microsoft Academic Search

To evaluate mineral nutrition in cattle production systems in the central plains of Venezuela, in well drained (WDS) and poorly drained (PDS) savannas as well as intermediate savannas (IS), nine cattle production units were selected in the municipal district of Pao de San Juan Bautista of Cojedes state, Venezuela, corresponding to a dry tropical forest. Soil, forage, animal blood serum,

Luis Depablos; Susmira Godoy; Claudio F. Chicco; Jorge Ordoñez

2009-01-01

206

Earnings and Education in Venezuela: An Update from the 1987 Household Survey.  

ERIC Educational Resources Information Center

Uses data from Venezuela's 1987 Household Survey to update returns to education and compare them to 1975 and 1984 figures. Returns to education have been maintained despite the educational explosion occurring in Venezuela during the period investigated. Although higher education is most heavily subsidized, primary education remains the most…

Psacharopoulos, George; Alam, Asad

1991-01-01

207

Four new species of Andean Pilea (Urticaceae), with additional notes on the genus in Venezuela.  

PubMed

Four new species of Pilea (Urticaceae) from the Andes of Venezuela are described and illustrated: Pileamatthewii sp. nov., Pileamiguelii sp. nov., Pileanicholasii sp. nov., and Pileanidiae sp. nov. The affinities of these species and their positions within the informal classifications of Pilea proposed by Weddell and Killip are discussed. Notes on other species of Pilea found in Venezuela also are presented. PMID:25383012

Dorr, Laurence J; Stergios, Basil

2014-01-01

208

Using the Five Themes of Geography To Teach about Venezuela and Mexico.  

ERIC Educational Resources Information Center

Activities that employ the five themes of geography--location, place, relationships within places, movement, and regions--to teach about Venezuela and Mexico are described in this document. Each theme has objectives, a list of materials, and three types of activities--exploration, invention, and expansion. Background information on Venezuela and…

Sunal, Cynthia Szymanski; Christensen, Lois

209

PROCUREMENT SUPPORT TOOL FOR A BAR SOAP MANUFACTURING FACILITY IN VENEZUELA  

Microsoft Academic Search

ABSTRACT Laundry bar soap has been produced commercially in Venezuela for over a century and is one of the most important products for beauty and personal carethroughout the Venezuela. More than 10 Venezuelan companies produce and sell it, but two companies hold almost 85 percent of the market share, with the Las Llaves brand, alone, holding nearly 70 percent. Management,for

MIGUEL ANGEL MARCANO DIAZ

2008-01-01

210

Ecology of an isolated mangrove lagoon (Playa Medina, Venezuela) and its potential  

E-print Network

Ecology of an isolated mangrove lagoon (Playa Medina, Venezuela) and its potential use as sewage conditions of a coastal mangrove lagoon in Venezuela which is completely isolated from the sea, lacking any is to relate some of the effects of disconnection, with the potential use of the mangrove as a sewage pond

Vegas Vlarrúbia, Teresa

211

ESPECIES DE MALEZAS MÁS IMPORTANTES EN SIEMBRAS HORTÍCOLAS DEL VALLE DE QUÍBOR, ESTADO LARA, VENEZUELA  

Microsoft Academic Search

Most important weed species in vegetable crop plantings at Quíbor valley, Lara state, Venezuela The objective of this research was to determine the most common weed species in the onion and tomato-green pepper plantation systems at Quíbor valley, Lara State, Venezuela. To estimate the dominance of weeds, plots of 0.5 hectares were selected in each of 15 farms where five

Mirna Martínez de Carrillo

2003-01-01

212

Socio-Economic Aspects of National Communication Systems: III. Radio Broadcasting in Venezuela. Communication and Society, 12.  

ERIC Educational Resources Information Center

The third in a series that examines the role of radio broadcasting in the process of socioeconomic and cultural change in three countries with different types of broadcasting organization--Austria, Czechoslovakia, and Venezuela--this volume focuses on Venezuela. An overview of radio broadcasting in Venezuela describes various aspects and provides…

Capriles, Oswaldo; And Others

213

Geographical variation in neonatal phenotype  

PubMed Central

Background Recent studies have shown associations between size and body proportions at birth and health outcomes throughout the life cycle, but there are few data on how neonatal phenotype varies in different populations around the world. Methods Data from the UK, Finland, India, Sri Lanka, China, DR Congo, Nigeria and Jamaica (N=22 067) were used to characterise geographical differences in phenotype in singleton, liveborn newborns. Measurements included birthweight, placental weight, length, head, chest, abdominal and arm circumferences and skinfolds. Results Neonates in Europe were the largest, followed by Jamaica, East Asia (China), then Africa and South Asia. Birthweight varied widely (mean values 2730g to 3570g), but in contrast, head circumference was similar in all except China (markedly smaller). The main difference in body proportions between populations was the head to length ratio, with small heads relative to length in China and large heads relative to length in South Asia and Africa. Conclusions These marked geographical differences in neonatal phenotype need to be considered when investigating determinants of fetal growth, and optimal phenotype for short-term and long-term outcomes. PMID:16929412

Leary, Sam; Fall, Caroline; Osmond, Clive; Lovel, Hermione; Campbell, Doris; Eriksson, Johan; Forrester, Terrence; Godfrey, Keith; Hill, Jacqui; Jie, Mi; Law, Catherine; Newby, Rachel; Robinson, Sian; Yajnik, Chittaranjan

2009-01-01

214

Geographic profiling and animal foraging.  

PubMed

Geographic profiling was originally developed as a statistical tool for use in criminal cases, particularly those involving serial killers and rapists. It is designed to help police forces prioritize lists of suspects by using the location of crime scenes to identify the areas in which the criminal is most likely to live. Two important concepts are the buffer zone (criminals are less likely to commit crimes in the immediate vicinity of their home) and distance decay (criminals commit fewer crimes as the distance from their home increases). In this study, we show how the techniques of geographic profiling may be applied to animal data, using as an example foraging patterns in two sympatric colonies of pipistrelle bats, Pipistrellus pipistrellus and P. pygmaeus, in the northeast of Scotland. We show that if model variables are fitted to known roost locations, these variables may be used as numerical descriptors of foraging patterns. We go on to show that these variables can be used to differentiate patterns of foraging in these two species. PMID:16263134

Le Comber, Steven C; Nicholls, Barry; Rossmo, D Kim; Racey, Paul A

2006-05-21

215

The Geographic Flow of Music  

E-print Network

The social media website last.fm provides a detailed snapshot of what its users in hundreds of cities listen to each week. After suitably normalizing this data, we use it to test three hypotheses related to the geographic flow of music. The first is that although many of the most popular artists are listened to around the world, music preferences are closely related to nationality, language, and geographic location. We find support for this hypothesis, with a couple of minor, yet interesting, exceptions. Our second hypothesis is that some cities are consistently early adopters of new music (and early to snub stale music). To test this hypothesis, we adapt a method previously used to detect the leadership networks present in flocks of birds. We find empirical support for the claim that a similar leadership network exists among cities, and this finding is the main contribution of the paper. Finally, we test the hypothesis that large cities tend to be ahead of smaller cities-we find only weak support for this hy...

Lee, Conrad

2012-01-01

216

A new approach to the oil business in Venezuela  

SciTech Connect

Petroleos de Venezuela S.A. (PDVSA) has been meeting during the past two years with a considerable number of companies (groups) with a view to possible associations for the reactivation of known fields, joint activities in barely explored areas and the exploitation, refining, upgrading and marketing of crudes from the Orinoco Belt holder of immense reserves of extra-heavy crudes and bitumens. In Venezuela, a new approach to the oil business is under way. On January 1976, the law nationalizing the Venezuelan oil industry became effective establishing that the government retains the sole rights to the country's petroleum industry. However, Article 5 of the law made provision for associations in cases considered to be of [open quotes]National Interest.[close quotes] PDVSA became the wholly government-owned holding entity, encompassing 26 subsidiaries and affiliates. Other energy segments, particularly coal and petrochemicals, were not included in the law and since 1984 several associations with non-governmental entities have been established in Venezuela and very valuable experience has been garnered. Similarly, partnerships and acquisitions have been made in Europe and USA, mostly in refining, through PDVSA. The international petroleum industry foresees a modest, but steady increase in production during the coming decade, particularly in the second half of the nineties. This effect, added to the globalization concept, is making the traditional vertically integrated oil companies look for diverse [open quotes]lateral[close quotes] associations between groups, private and/or state owned with common interests, that will give greater security to sources of supply and market share.

Pradas, F.; Valdes, G. (Petroleos de Venezuela, Caracas (Venezuela))

1993-02-01

217

Amidoximes ?-Hydroxylées Dérivées de Sucres  

Microsoft Academic Search

The two epimeric ?-hydroxyamidoximes 5 and 6 - and some derivatives thereof, particularly oxadiazoles 16 and 17 - have been stereospecifically prepared from the keto sugar 1. Compound 5 was found to exist in two polymorphous crystalline forms (? and ?) depending on the crystallization solvent. Both forms are orthorhombic, space group P212121 (?-form : a = 10.408(3), b =

Jean M. J. Tronchet; Guido Zosimo-landolfo; Gérald Bernardinelli; Philippe Arrizabalaga; Michel Geoffrey

1986-01-01

218

Hydrocarbon systems of Northeastern Venezuela: plate through molecular scale-analysis of the genesis and evolution of the Eastern Venezuela Basin  

Microsoft Academic Search

The prolific, oil-bearing basins of eastern Venezuela developed through an unusual confluence of Atlantic, Caribbean and Pacific plate tectonic events. Mesozoic rifting and passive margin development created ideal conditions for the deposition of world-class hydrocarbon source rocks. In the Cenozoic, transpressive, west-to-east movement of the Caribbean plate along the northern margin of Venezuela led to the maturation of those source

L. L Summa; E. D Goodman; M Richardson; I. O Norton; A. R Green

2003-01-01

219

Natural Host Relationships of Hantaviruses Native to Western Venezuela  

PubMed Central

Abstract Strains of Caño Delgadito virus (CADV) and Maporal virus (MAPV) were isolated from 25 (8.9%) of the 280 rodents captured on farms in 1997 in western Venezuela. The results of analyses of laboratory and zoographic data indicated that Alston's cotton rat (Sigmodon alstoni) is the principal host of CADV, horizontal virus transmission is the dominant mode of CADV transmission in Alston's cotton rat in nature, a pygmy rice rat (Oligoryzomys sp.) is the principal host of MAPV, and the natural host relationships of CADV and MAPV are highly specific. PMID:20055578

Milazzo, Mary L.; Duno, Gloria; Utrera, Antonio; Richter, Martin H.; Duno, Freddy; de Manzione, Nuris

2010-01-01

220

Present Status of Historical Seismicity Studies in Colombia and Venezuela  

NASA Astrophysics Data System (ADS)

After the publication of the SISRA (CERESIS-1985) regional project, a unified catalog of seismic parameters and intensities for South America, researchers in historical seismicity have continued advancing on different scales in the area of this study of seismic hazard. The most important initiatives carried out in this area in Colombia and Venezuela can be grouped as follows: a) Reviews of destructive earthquakes in national and international historic archives, principally by Altez and FUNVISIS in Venezuela and Espinosa, Salcedo, and Sarabia et al in Colombia, leading to the preparation of seismologic catalogues, scientific and dissemination articles, reports, books, among others. b) Organization and systematization of historic information to develop public domain data bases and information, specifically the Historic Seismologic Teleinformation System in Venezuela, carried out between 2004 and 2008 under the coordination of Christl Palme and accessible on-line: http://sismicidad.ciens.ula.ve. As well, the "Historia Sísmica de Colombia 1550-1830" (Seismic History in Colombia 1550-1830) data base, in CD-ROM, by Espinosa Baquero (2003) and the historic seismicity information system of Colombia (Servicio Geológico Colombiano-Universidad Nacional de Colombia), published on the internet in 2012: http://agata.ingeominas.gov.co:9090/SismicidadHistorica/. c) Macroseismic studies for the development of intensity attenuation equations and the quantification and revaluation of basic historic earthquake parameters using isoseismal maps (Rengifo et al., Palme et al., Salcedo et al., among others) and procedures such as Boxer and Bakun & Wentworth (Palme et al., Dimaté, among others), which have produced significant changes in the parameters of some of the large earthquakes. d) Symposiums of researchers to promote interest and development in the discipline, including Jornadas Venezolanas de Sismología Histórica (Venezuelan Congress of Historical Seismology), held periodically between 1997 and 2012, the year of the sixth edition. As well, national and international research groups have been formed to work actively on global projects, such as the Geophysics Laboratory of Universidad de Los Andes in Venezuela. In the future, international groups will be formed to jointly treat issues including localization and size of destructive events along borders, common scales for the evaluation of intensities, integrated data bases, etc. Additionally the methods employed will be validated by paleoseismology, neotectonics and instrumental seismicity, among others.

Sarabia, A.; Cifuentes, H.; Altez Ortega, R.; Palme, C.; Dimate, C.

2013-05-01

221

Geographic spatial reasoning strategy based on ontology  

NASA Astrophysics Data System (ADS)

Research on geographical spatial reasoning aims at expression of spatial relationships, geo-spatial reasoning rules and reasoning mechanism that could be used for geo-spatial knowledge discovery and spatial analysis. Spatial reasoning is intelligent spatial data processing technology in support of geo-spatial decision-making. Geographic ontology is clear formal definition of geographical concepts, which defines the basic terms and relations of these concepts, and the rules combining these terms and relationship. Therefore, it can well meet the formal knowledge representation requirement for geo-spatial reasoning that carry out reasoning by using geographic ontology. In this paper, methods of creating geographic ontology are discussed, and the rules based on spatial reasoning are summarized. Furthermore, a path query method based on geographic ontology is proposed, by creating a road ontology system and the corresponding administrative region ontology system, it can be used to solve large-scale spatial path query problem.

Du, Xiaochu; Guo, Qingsheng; Wang, Quanfang

2009-10-01

222

The Geographical Dimension of Terrorism  

NASA Astrophysics Data System (ADS)

The events of September 11 ushered us all into a world in which our security and sense of invulnerability were savagely replaced by vulnerability and irrational fear. To the delight of our adversaries who planned these attacks, we often responded in ways that furthered their agenda by weakening the cultural colossus that we call home. Normally terrorism is viewed as intense but localized violence. Seldom is terrorism viewed in its more expansive dimensions. It is burned into our collective memories as a collapsed building, a shattered bus, an incinerated nightclub, or facilities closed by a few anthrax-laced letters. However, terrorism must be studied in dimensions larger than the view from a news camera. This conclusion forms the intellectual basis for The Geographical Dimension of Terrorism.

Hawkins, Houston T.

223

The Credibility of Volunteered Geographic Information  

Microsoft Academic Search

The proliferation of information sources as a result of networked computers and other interconnected devices has prompted\\u000a significant changes in the amount, availability, and nature of geographic information. Among the more significant changes\\u000a is the increasing amount of readily available volunteered geographic information. Although volunteered information has fundamentally enhanced geographic data, it has also prompted\\u000a concerns with regard to its

Andrew J. Flanagin; Miriam J. Metzger

2008-01-01

224

Raptor abundance and distribution in the Llanos wetlands of Venezuela  

USGS Publications Warehouse

The Llanos of Venezuela is a 275 000-km2 freshwater wetland long recognized as an important habitat for waterbirds. However, little information exists on the raptor community of the region. We conducted raptor surveys in the Southwestern and Western Llanos during 2000-02 and detected 28 species representing 19 genera. Overall, areas of the Llanos that we sampled contained 52% of all raptor species and more than 70% of the kites, buteos, and subbuteos known to inhabit Venezuela. Regional differences in the mean number per route for four of the 14 most common species, the Crested Caracara (Caracara plancus), Black-collared Hawk (Busarellus nigricollis), American Kestrel (Falco sparverius), and Osprey (Pandion haliaetus), were significant (P < 0.0018) in relation to the wet or dry seasons. Of the 14 less common species, six were detected in only one season (wet or dry). The Southwestern and Western regions of the Llanos support a rich raptor community composed primarily of nonmigratory wetland-dependent and upland-terrestrial species. ?? 2005 The Raptor Research Foundation, Inc.

Jensen, W.J.; Gregory, M.S.; Baldassarre, G.A.; Vilella, F.J.; Bildstein, K.L.

2005-01-01

225

The periodicity of Plasmodium vivax and Plasmodium falciparum in Venezuela.  

PubMed

We investigated the periodicity of Plasmodium vivax and P. falciparum incidence in time-series of malaria data (1990-2010) from three endemic regions in Venezuela. In particular, we determined whether disease epidemics were related to local climate variability and regional climate anomalies such as the El Niño Southern Oscillation (ENSO). Malaria periodicity was found to exhibit unique features in each studied region. Significant multi-annual cycles of 2- to about 6-year periods were identified. The inter-annual variability of malaria cases was coherent with that of SSTs (ENSO), mainly at temporal scales within the 3-6 year periods. Additionally, malaria cases were intensified approximately 1 year after an El Niño event, a pattern that highlights the role of climate inter-annual variability in the epidemic patterns. Rainfall mediated the effect of ENSO on malaria locally. Particularly, rains from the last phase of the season had a critical role in the temporal dynamics of Plasmodium. The malaria-climate relationship was complex and transient, varying in strength with the region and species. By identifying temporal cycles of malaria we have made a first step in predicting high-risk years in Venezuela. Our findings emphasize the importance of analyzing high-resolution spatial-temporal data to better understand malaria transmission dynamics. PMID:24149288

Grillet, María-Eugenia; El Souki, Mayida; Laguna, Francisco; León, José Rafael

2014-01-01

226

Assessing earthquake catalogues in Venezuela by analyzing time series data  

NASA Astrophysics Data System (ADS)

We applied the Mann-Kendall non-parametric test for identifying significant trends in time series data regarding the seismicity patterns in Venezuela during the period 2001-2010. The entire seismicity region is divided in three areas to perform the test: 1) West with 12774 seismic events; 2) Center for a total of 909 earthquakes and 3) East with 6382 earthquakes. We analyzed the catalogues for every sub region to obtain the b value of the Gutenberg-Richter law based on the maximum likelihood method and the annual magnitude of completeness (Mc) by using the maximum curvature method (MAXC). We assessed statistically the analysis of Z for the time series consisting of the b value and Mc in the three subsets of earthquakes. The confidence interval of this study was 90%. This approach is useful to analyze the performance characteristics of the Venezuelan seismic network and the associated regional catalogues. The results lead to conclude that the Central part of Venezuela does not show an statistically significant trend of the seismicity or Mc, while western region has a decreasing trend in the Mc estimation but no variations in terms of the seismicity. Only the Eastern region presents an increasing trend in its seismicity and Mc values.

Vasquez, R.; Granado, C.

2011-12-01

227

The periodicity of Plasmodium vivax and Plasmodium falciparum in Venezuela.  

PubMed

We investigated the periodicity of Plasmodium vivax and P. falciparum incidence in time-series of malaria data (1990-2010) from three endemic regions in Venezuela. In particular, we determined whether disease epidemics were related to local climate variability and regional climate anomalies such as the El Niño Southern Oscillation (ENSO). Malaria periodicity was found to exhibit unique features in each studied region. Significant multi-annual cycles of 2 to about six-year periods were identified. The inter-annual variability of malaria cases was coherent with that of SSTs (ENSO), mainly at temporal scales within the 3-6 year periods. Additionally, malaria cases were intensified approximately 1 year after an El Niño event, a pattern that highlights the role of climate inter-annual variability in the epidemic patterns. Rainfall mediated the effect of ENSO on malaria locally. Particularly, rains from the last phase of the season had a critical role in the temporal dynamics of Plasmodium. The malaria-climate relationship was complex and transient, varying in strength with the region and species. By identifying temporal cycles of malaria we have made a first step in predicting high-risk years in Venezuela. Our findings emphasize the importance of analyzing high-resolution spatial-temporal data to better understand malaria transmission dynamics. PMID:24463259

Grillet, María-Eugenia; El Souki, Mayida; Laguna, Francisco; León, José Rafael

2013-10-26

228

Genetic characterization of rabies field isolates from Venezuela.  

PubMed Central

Twenty samples from cases of rabies in humans and domestic animals diagnosed in Venezuela between 1990 and 1994 and one sample from a vampire bat collected in 1976 were characterized by reactivity to monoclonal antibodies against the viral nucleoprotein and by patterns of nucleotide substitution in the nucleoprotein gene. Three antigenic variants were found: 1, 3, and 5. Antigenic variant 1 included all samples from dogs and humans infected by contact with rabid dogs. Unique substitutions permitted identification of two separate outbreaks of dog rabies in the Maracaibo Depression and Los Llanos region and in the Andean region of Venezuela. Samples from the vampire bat and two head of cattle were characterized as antigenic variant 3 and showed a nucleotide sequence homology of 96 to 98% to each other and to samples of vampire bat-associated rabies throughout Latin America. Ten of the remaining 12 samples were characterized as antigenic variant 5. Genetic studies indicated that 11 of these samples formed a highly homologous and distinctive group but were closely related to samples of vampire bat-associated rabies. The 12th sample of variant 5 (from a cat) showed only 78 to 80% genetic homology to samples of rabies associated with vampire bats. The application of antigenic and genetic typing to rabies surveillance in Latin America is essential to improve control programs. Recognition of the source of outbreaks of dog rabies and identification of wildlife species maintaining sylvatic cycles of rabies transmission permit better utilization of public health resources. PMID:8735118

de Mattos, C A; de Mattos, C C; Smith, J S; Miller, E T; Papo, S; Utrera, A; Osburn, B I

1996-01-01

229

Embarking on Collaborative Research in Geographic Education  

ERIC Educational Resources Information Center

This paper provides insights into the complexities and rewards involved in conducting a collaborative research project in geographic education. Using a case study from the National Council for Geographic Education's ongoing EMBARC Project ("Encouraging our Members to Belong to a Research Community"), the authors document and analyse their ongoing…

Alexson, Randy Gabrys; Kemnitz, Christopher; Bell, Scott; Hardwick, Susan

2005-01-01

230

Graduate Certificate in Geographic Information Systems (GIS)  

E-print Network

Graduate Certificate in Geographic Information Systems (GIS) Texas A&M University GIS technologies 651/BAEN 651 ­ Geographic Information Systems · GEOG 660 ­ Applications for GIS Intermediate Level (Both are required) 6 hours · ESSM 652/BAEN 652 ­ Advanced Topics in GIS · GEOG 665 ­ GIS ­ based

231

Landscape Science: A Russian Geographical Tradition  

Microsoft Academic Search

The Russian geographical tradition of landscape science (landshaftovedenie) is analyzed with particular reference to its initiator, Lev Semenovich Berg (1876–1950). The differences between prevailing Russian and Western concepts of landscape in geography are discussed, and their common origins in German geographical thought in the late nineteenth and early twentieth centuries are delineated. It is argued that the principal differences are

Denis J. B. Shaw; Jonathan D. Oldfield

2007-01-01

232

Categorizing web queries according to geographical locality  

Microsoft Academic Search

Web pages (and resources, in general) can be characterized according to their geographical locality. For example, a web page with general information about wildflowers could be considered a global page, likely to be of interest to a geographically broad audience. In contrast, a web page with listings on houses for sale in a specific city could be regarded as a

Luis Gravano; Vasileios Hatzivassiloglou; Richard Lichtenstein

2003-01-01

233

ET come home: potential evapotranspiration in geographical  

E-print Network

RESEARCH REVIEW ET come home: potential evapotranspiration in geographical ecologygeb_578 1 of climatological data, within which evapotranspiration estimates are of central importance. In this paper we evaluate and review the use of evapotranspiration models and data in studies of geographical ecology

Malhi, Yadvinder

234

Spatial relation query based on geographic ontology  

NASA Astrophysics Data System (ADS)

The description of a spatial relation is the reflection of human's cognition of spatial objects. It is not only affected by topology and metric, but also affected by geographic semantics, such as the categories of geographic entities and contexts. Currently, the researches about language aspects of spatial relations mostly focus on natural-language formalization, parsing of query sentences, and natural-language query interface. However, geographic objects are not simple geometric points, lines or polygons. In order to get a sound answer according with human cognition in spatial relation queries, we have to take geographic semantics into account. In this paper, the functions of natural-language spatial terms are designed based on previous work on natural-language formalization and human-subject tests. Then, the paper builds a geographic knowledge base based on geographic ontology using Protégé for discriminating geographic semantics. Finally, using the geographic knowledge in the knowledge base, a prototype of a query system is implemented on GIS platform.

Du, Chong; Xu, Jun; Zhang, Jing; Si, Wangli; Liu, Bao; Zhang, Dapeng

2009-09-01

235

Spatial relation query based on geographic ontology  

NASA Astrophysics Data System (ADS)

The description of a spatial relation is the reflection of human's cognition of spatial objects. It is not only affected by topology and metric, but also affected by geographic semantics, such as the categories of geographic entities and contexts. Currently, the researches about language aspects of spatial relations mostly focus on natural-language formalization, parsing of query sentences, and natural-language query interface. However, geographic objects are not simple geometric points, lines or polygons. In order to get a sound answer according with human cognition in spatial relation queries, we have to take geographic semantics into account. In this paper, the functions of natural-language spatial terms are designed based on previous work on natural-language formalization and human-subject tests. Then, the paper builds a geographic knowledge base based on geographic ontology using Protégé for discriminating geographic semantics. Finally, using the geographic knowledge in the knowledge base, a prototype of a query system is implemented on GIS platform.

Du, Chong; Xu, Jun; Zhang, Jing; Si, Wangli; Liu, Bao; Zhang, Dapeng

2010-11-01

236

NATIONAL CENTER FOR GEOGRAPHIC INFORMATION AND ANALYSIS  

E-print Network

based on geographic information systems (GIS) in the many disciplines involved in GIS-based research. Three research initiatives were closed: Formalizing Cartographic Knowledge (I8, begun in October, 1993, as expressed in the solicitation document: to advance the theory, methods and techniques of geographic analysis

California at Santa Barbara, University of

237

Teaching Geographic Field Methods Using Paleoecology  

ERIC Educational Resources Information Center

Field-based undergraduate geography courses provide numerous pedagogical benefits including an opportunity for students to acquire employable skills in an applied context. This article presents one unique approach to teaching geographic field methods using paleoecological research. The goals of this course are to teach students key geographic…

Walsh, Megan K.

2014-01-01

238

Geographical Literacy and the Role of GIS.  

ERIC Educational Resources Information Center

Demonstrates how Geographical Information Systems (GIS) can help develop student skills that enhance learning. Describes the application of GIS within secondary geography education, providing an example of its use at the Windaroo Valley State High School (Australia). Discusses GIS and geographic literacy. (CMK)

West, Bryan A.

1999-01-01

239

Access to Geographic Information: Openness versus Security  

E-print Network

-profit businesses, non-profit organizations, and citizens generally (for example, see httpAccess to Geographic Information: Openness versus Security Professor Harlan Onsrud Department that ultimately appeared as Onsrud, H.J., 2003, Access to Geographic Information: Openness versus Security

Onsrud, Harlan J.

240

Gene ow and geographically structured coevolution  

E-print Network

Gene ¯ow and geographically structured coevolution Scott L. Nuismer1* , John N. Thompson1 and antagonism among communities linked by migration. Inclusion of geographic structure with gene £ow alters structure with gene £ow allows ¢xed mutualisms to be evolutionarily stable within both communities, even

Nuismer, Scott L.

241

What is the essence of geographic clustering?  

Microsoft Academic Search

The present paper put forward some basic arguments on the concept of geographic clustering. Before doing that the general idea behind this paper is to present the new approaches. Furthermore, we develop a framework as a tool in which it is easier to discuss the different new approaches of geographic agglomeration and clustering de- veloped in the 1990s. The framework

Michael S. Dahl

2001-01-01

242

José María Vargas (1786-1854): Reformer of anatomical studies in Venezuela.  

PubMed

José María Vargas (1786-1854): Venezuelan medical doctor, surgeon, optician, anatomist, chemist, botanist, professor, geologist, mineralogist, and mathematician. Second President of Venezuela (1835-1836), First republican dean, he reformed medicine studies in 1827 establishing human anatomical dissection in the Universidad Central de Venezuela where he taught human anatomy between 1827 and 1853 along with surgery and chemistry. In 1838, he wrote Curso de Lecciones y demostraciones Anatómicas, the first book on the subject printed in Venezuela for the teaching of human anatomy. PMID:23650143

Reverón, Rafael Romero

2014-03-01

243

Geographic Determinants of Chinese Urbanization  

NASA Astrophysics Data System (ADS)

In the first years of the 21st century, the human race became primarily urban for the first time in history. With countries like India and China rapidly undergoing structural change from rural agricultural-based economies to urbanized manufacturing- and service-based economies, knowing where the coming waves of urbanization will occur would be of interest for infrastructure planning and for modeling consequences for ecological systems. We employ spatial econometric methods (geographically weighted regression, spatial lag models, and spatial errors models) to estimate two determinants of urbanization in China. The first is the role of physical geography, measured as topography-adjusted distance to major ports and suitability of land for agriculture. The second is the spatial agglomeration effect, which we estimate with a spatial lag model. We find that Chinese urbanization between 1990 and 2000 exhibited important spatial agglomeration effects, as well as significant explanatory power of nearby agricultural suitability and distance to ports, both in a nationwide model and in a model of local regression estimates. These results can help predict the location of new Chinese urbanization, and imply that climate change-induced changes in agricultural potential can affect the spatial distribution of urban areas.

Mccord, G. C.; Christensen, P.

2011-12-01

244

Geographic range limits: achieving synthesis  

PubMed Central

Understanding of the determinants of species' geographic range limits remains poorly integrated. In part, this is because of the diversity of perspectives on the issue, and because empirical studies have lagged substantially behind developments in theory. Here, I provide a broad overview, drawing together many of the disparate threads, considering, in turn, how influences on the terms of a simple single-population equation can determine range limits. There is theoretical and empirical evidence for systematic changes towards range limits under some circumstances in each of the demographic parameters. However, under other circumstances, no such changes may take place in particular parameters, or they may occur in a different direction, with limitation still occurring. This suggests that (i) little about range limitation can categorically be inferred from many empirical studies, which document change in only one demographic parameter, (ii) there is a need for studies that document variation in all of the parameters, and (iii) in agreement with theoretical evidence that range limits can be formed in the presence or absence of hard boundaries, environmental gradients or biotic interactions, there may be few general patterns as to the determinants of these limits, with most claimed generalities at least having many exceptions. PMID:19324809

Gaston, Kevin J.

2009-01-01

245

A new baseline for fascioliasis in Venezuela: lymnaeid vectors ascertained by DNA sequencing and analysis of their relationships with human and animal infection  

PubMed Central

Background Human and animal fascioliasis poses serious public health problems in South America. In Venezuela, livestock infection represents an important veterinary problem whereas there appear to be few human cases reported, most of which are passively detected in health centres. However, results of recent surveys suggest that the situation may be underestimated in particular areas. To obtain a baseline for future fascioliasis assessment, studies were undertaken by means of rDNA ITS-2 and ITS-1 and mtDNA cox1 sequencing to clarify the specific status of Venezuelan lymnaeids, their geographical distribution and fascioliasis transmission capacity, by comparison with other American countries and other continents. Results Results obtained completely change the lymnaeid scenario known so far. The relatively rich lymnaeid fauna of Venezuela has been proven to include (i) Lymnaea meridensis and L. neotropica as the only native members, (ii) L. cubensis and Pseudosuccinea columella introduced from the Caribbean area, and (iii) Galba truncatula and L. schirazensis introduced from the Old World. The absence of representatives of the stagnicoline and Radix groups is remarkable. Four species are fascioliasis vectors: G. truncatula, L. cubensis and L. neotropica, which have the capacity to give rise to human endemic areas, and P. columella, which is a source of animal infection and is responsible for the spread of disease. Vector capacity in the apparently highland endemic L. meridensis is to be confimed, although may be expected given its phylogenetic relationships. Similarly as elsewhere, the non-transmitting L. schirazensis has been confused with L. cubensis, also with G. truncatula and possibly with L. neotropica. Conclusions The new scenario leads to the re-opening of many disease aspects. In Venezuela, altitude appears to be the main factor influencing fascioliasis distribution. Human infection shows an altitude pattern similar to other Andean countries, although a differing highland/lowland impact on animal infection does not appear evident. The overlap of G. truncatula, L. cubensis and probably also L. neotropica in temperate and cold zones suggests a higher risk for human infection in mid and high altitude areas. A lymnaeid species mapping by means of DNA markers becomes a priority to determine human and animal fascioliasis distribution in Venezuela, owing to the importance of lymnaeid vectors in defining transmission and epidemiological patterns. PMID:21999170

2011-01-01

246

Low occurrence of Helicobacter DNA in tropical wild birds, Venezuela.  

PubMed

Enteric Helicobacter species (Helicobacter pullorum, Helicobacter pametensis, Helicobacter canadensis, Helicobacter anseris, and Helicobacter brantae) have been found in birds from temperate latitudes. We evaluated the occurrence of Helicobacter spp. in terrestrial wild birds from Venezuela. A fragment of 16S rRNA gene was amplified by PCR with Helicobacter genus-specific primers. Helicobacter spp. were detected in four of 80 fecal and in three of 42 intestinal tissue samples. Analyses of 16S and 23S rRNA gene sequences confirm for the first time the presence of Helicobacter in tropical terrestrial wild birds. However, the occurrence of Helicobacter was low, suggesting these bacteria may be uncommon in the populations we studied. PMID:24502727

García-Amado, María Alexandra; Sanz, Virginia; Martinez, Leoncia Margarita; Contreras, Mónica; Lentino, Miguel; Michelangeli, Fabian

2013-10-01

247

Potential for Great Thrust Earthquakes in NE Colombia & NW Venezuela  

NASA Astrophysics Data System (ADS)

Sixty-five percent of the ?19 mm/yr eastward velocity of the Caribbean Plate north of Aruba and the Guajira peninsula relative to the South American plate is accommodated by dextral slip on the Bocono Fault system in NW Venezuela at 12±1 mm/yr, the remaining ~3 mm/yr of shear apparently distributed to the NW of the fault (Perez et al., 2011). The N40E strike of the Bocono fault system, however, requires that 10.6±1 mm/yr of convergence should accompany this partitioned dextral shear, but GPS measurements reveal that less than 25% of this convergence occurs across the Venezuelan Andes. The remaining 6-8 mm of convergence is presumably accommodated by incipient subduction between the Bocono fault and a trench 300 km NW of the northern coast of Colombia. Hence NW Venezuela and NE Colombia may occasionally host great earthquakes. Our current poor understanding of the geometry of the plate interface permits the plate to be locked 300 km down-dip and possibly 600 km along-strike, and if the plate slips in 10 m ruptures it could do so every 1200 years in a M~9 earthquake. No great earthquake has occurred since 1492, since when ~4 m of potential slip has developed, but should slip occur on just 10% of the hypothesized décollement (100x150 km) it could do so now in an Mw=8.2 earthquake. In that a potential Mw>8 earthquake poses a future seismic and tsunami threat to the Caribbean it is important to examine whether great earthquakes have occurred previously near the NW Venezuela coast. It is possible that creep accommodates the entire convergence signal, since there is no suggestion from microseismicity for an abrupt locked-to-sliding transition, as, for example, signifies its location in the Himalaya. An alternative measure of future potential seismic energy release is to identify the locus and rate of present-day strain contraction. To this end, Venezuelan, Colombian and US (CU and UNAVCO) investigators are installing an array of more than a dozen continuous operating GPS sites in the region. Studies of tsunami deposits on the Dutch Antilles suggest that the provenance of paleotsunami responsible for moving 10-100 ton blocks of coral onshore in the past two millennia has been from the east (Sheffers, 2002), and not from the north or south as we might expect from a NW Venezuelan earthquake. The existence of precariously balanced rocks in the region provides an alternative constraint on the occurrence of large local accelerations. The survival of at least four precariously balanced megablocks on the island of Aruba suggests that horizontal accelerations here have not exceeded 1 g for the past several millennia, but refined numerical estimates of potential shaking intensity consistent with their survival have yet to be completed. Accelerations exceeded 2.5 g in the Tohuko 2011 earthquake but above the Mexican subduction zone, accelerations have typically not exceeded 0.5 g in recent Mw~7.5 earthquakes, and hence the existence of these blocks may not exclude the historical occurrence of damaging earthquakes. A broader search for surviving strong-motion indicators in Colombia and Venezuela is planned during the installation of the GPS array.

Bilham, R. G.; Mencin, D.

2013-05-01

248

Overcoming Squeezing in the Yacambú-Quibor Tunnel, Venezuela  

NASA Astrophysics Data System (ADS)

The 5 m diameter 23.3 km long Yacambú-Quibor tunnel is designed to carry water through the Andes from the Yacambú dam in the wet tropical Orinoco basin to the semi-arid but fertile Quibor basin in western Venezuela. The tunnel is excavated in silicified and graphitic phyllites at depths of up to 1270 m below surface and extreme squeezing problems have been encountered. Construction involved 8 contracts extending over 32 years with breakthrough being achieved in July 2008. Several excavation methods and various lining designs were used over the years until the adoption of yielding support permitted the Owner and the Contractor to agree that only a circular section would be used and emphasis was placed on developing a routine construction procedure, irrespective of the rock conditions encountered at the face. This paper describes some of the rock engineering issues that were faced during the construction of this tunnel.

Hoek, E.; Guevara, R.

2009-04-01

249

Seismic anisotropy and mantle flow beneath western Venezuela  

NASA Astrophysics Data System (ADS)

We measured shear wave splitting from SKS and SKKS data recorded by the national seismic network of Venezuela and a linear broadband PASSCAL/Rice seismic array across the Merida Andes. The linear array was installed as a second phase of the passive seismic component of the BOLIVAR project (Broadband Onshore-offshore Lithospheric Investigation of Venezuela and the Antilles arc Region) to better understand the complicated regional tectonics in western Venezuela. Polarization direction (?) of the faster S wave and delay time (?t) between the fast and slow wavelets from 20 stations were obtained using a stacking method proposed by Wolfe and Silver (1998). For each station, SKS or SKKS waveform data from 2 to 36 earthquakes, mostly from the Tonga subduction zone, were selected for splitting analysis. We assumed that shear wave splitting observed at each station is caused by upper mantle seismic anisotropy beneath the station. The best splitting parameters (?,?t) were estimated when the summed eigenvalue ratio ?(SNRi[?2i(?,?t)/?1i(?,?t)]) of the covariance matrix of the corrected particle motion reaches its minimum. We used signal-to-noise ratio (SNR) calculated from a noise time window before SKS as the weight of the summation. The fast polarization directions can be divided into 3 zones, all in agreement with local GPS data: The first zone is the stations north of the dextral strike-slip Oca fault, an extinct part of the San Sebastian-El Pilar plate boundary zone. These stations show the largest split times (1.6-2.0s), oriented in a roughly EW direction, and are similar to splitting observations made further to the east along the strike slip plate boundary. Zone two is the Maracaibo block, bounded on the southeast by the right lateral Bocono fault, where split orientations are at N45°E, suggesting that the observed seismic anisotropy is likely caused by lithospheric deformation parallel to the Bocono. Zone three is east of the Bocono fault inside the Barinas-Apure Basin, where the measured split times are smaller (0.6-1.0s) with an EW fast direction that is consistent with those observed at the Guarico Basin, Maturin Basin and the Guayana shield in the east (Growdon et al., 2009), and are interpreted as orientation with the motion of the continent. Russo and Silver (1994) proposed that the rollback of the Nazca plate induced a trench-parallel NS flow that passes around the northwest corner of the subducting plate and along the northern edge of South America, forming an eastward flow beneath the southern Caribbean plate. The observed seismic anisotropy in western Venezuela can be roughly explained by a combination of this corner flow, the westward drift of the South America continent due to the opening of Atlantic Ocean, modulated by the northward escape of the Maracaibo block.

Masy, J.; Niu, F.; Levander, A.

2009-12-01

250

Postepizootic Persistence of Venezuelan Equine Encephalitis Virus, Venezuela  

PubMed Central

Five years after the apparent end of the major 1995 Venezuelan equine encephalitis (VEE) epizootic/epidemic, focal outbreaks of equine encephalitis occurred in Carabobo and Barinas States of western Venezuela. Virus isolates from horses in each location were nearly identical in sequence to 1995 isolates, which suggests natural persistence of subtype IC VEE virus (VEEV) strains in a genetically stable mode. Serologic evidence indicated that additional outbreaks occurred in Barinas State in 2003. Field studies identified known Culex (Melanoconion) spp. vectors and reservoir hosts of enzootic VEEV but a dearth of typical epidemic vectors. Cattle serosurveys indicated the recent circulation of enzootic VEEV strains, and possibly of epizootic strains. Persistence of VEEV subtype IC strains and infection of horses at the end of the rainy season suggest the possibility of an alternative, cryptic transmission cycle involving survival through the dry season of infected vectors or persistently infected vertebrates. PMID:16485478

Navarro, Juan-Carlos; Medina, Gladys; Vasquez, Clovis; Coffey, Lark L.; Wang, Eryu; Suárez, Alexander; Biord, Hernán; Salas, Marlene

2005-01-01

251

Swarms in Venezuela: characterization of the involved seismicity  

NASA Astrophysics Data System (ADS)

A swarm is a gradual increase and decay of seismicity in time forming a cluster of seismic events without the occurrence of a particular mainshock or major earthquake. In Venezuela, there are few sequences of the swarm type in the instrumental age of seismology. These swarms are not related to volcanic activity and there is few studied evidence to lead the understanding of the triggering mechanism of the venezuelan swarm activity. We compile instrumental information in order to reassess and compare five swarms occurred in 1989, 1991, 1995, 2006 and 2011. Four of these swarms are located in areas where predominant quaternary faults generate most of the background seismicity. We investigated the statistical properties of these swarms and activity patterns under the frequency size distribution and the interevent-time distribution to study the time between two consecutive events as a stationary point process.

Vasquez, R.; Granado, C.; Borges, N.

2013-05-01

252

Transmission of Guanarito and Pirital Viruses among Wild Rodents, Venezuela  

PubMed Central

Samples from rodents captured on a farm in Venezuela in February 1997 were tested for arenavirus, antibody against Guanarito virus (GTOV), and antibody against Pirital virus (PIRV). Thirty-one (48.4%) of 64 short-tailed cane mice (Zygodontomys brevicauda) were infected with GTOV, 1 Alston’s cotton rat (Sigmodon alstoni) was infected with GTOV, and 36 (64.3%) of 56 other Alston’s cotton rats were infected with PIRV. The results of analyses of field and laboratory data suggested that horizontal transmission is the dominant mode of GTOV transmission in Z. brevicauda mice and that vertical transmission is an important mode of PIRV transmission in S. alstoni rats. The results also suggested that bodily secretions and excretions from most GTOV-infected short-tailed cane mice and most PIRV-infected Alston’s cotton rats may transmit the viruses to humans. PMID:22172205

Milazzo, Mary L.; Cajimat, Maria N.B.; Duno, Gloria; Duno, Freddy; Utrera, Antonio

2011-01-01

253

Mathematical models for the geographic profiling Mike O'Leary  

E-print Network

of controversies surrounding geographic profiling. Mike O'Leary (Towson University) Geographic Profiling November of controversies surrounding geographic profiling. How should you evaluate the effectiveness of a geographic) Dragnet (David Canter) Rigel (Kim Rossmo) There are a number of controversies surrounding geographic

O'Leary, Michael

254

Review of the Berosus Leach of Venezuela (Coleoptera, Hydrophilidae, Berosini) with description of fourteen new species  

E-print Network

The species of the water scavenger beetle genus Berosus Leach occurring in Venezuela are reviewed. Thirty-six species are recorded, including fifteen new species, fourteen of which are described here as new: Berosus aragua sp. n., Berosus...

Oliva, Adriana; Short, Andrew E. Z.

2012-07-06

255

Correlation of the Jurassic through Oligocene Stratigraphic Units of Trinidad and Northeastern Venezuela  

SciTech Connect

The Jurassic through Oligocene stratigraphies of Trinidad and the Serrenia del Interior of eastern Venezuela exhibit many similarities because of their proximity on the passive continental margins of northeastern South America. A slightly later subsidence in eastern Venezuela, and the generally deeper-water sedimentation in Trinidad, is interpreted to be the result of a serration of the original rift margin, producing an eastern Venezuela promontory and Trinidadian re-entrant. We interpret these serrations to be the result of oblique (NW-SE) spreading of North and South America during Middle and late Jurassic time. The stratigraphies of northeastern Venezuela and Trinidad contrast in the Hauterivan-Albian interval, with dynamic shallow shelf environments prevailing in the Serrenia del Interior and deeper marine submarine-fan deposition in Trinidad. Both areas develop middle to Upper Cretaceous source rocks during a time of eustatic sea level high and widespread oceanic anoxia. 15 refs., 4 fig.

Algar, S. [Enterprise Oil, London (United Kingdom); Erikson, J.P. [Univ. of California, Davis, CA (United States)

1995-04-01

256

A Descriptive Chronology of Films by Women in Venezuela, 1952-92.  

ERIC Educational Resources Information Center

Offers an annotated chronology of Venezuelan films, representing a first step toward a general history of women's filmmaking in Venezuela. Suggests that the participation of women directors closely follows the curve of national film production in general. (RS)

Schwartzman, Karen

1993-01-01

257

Biological and phylogenetic characterization of a genotype VII Newcastle disease virus from Venezuela: Efficacy of vaccination  

Technology Transfer Automated Retrieval System (TEKTRAN)

Here we describe the characterization a virulent genotype VII Newcastle disease virus (NDV) from Venezuela and evaluate the efficacy of heterologous genotype commercial vaccination under field and controlled rearing conditions. Biological pathotyping and molecular analysis were applied. Results sh...

258

Decentralization and Regionalization in the Ministry of Education: The Case of Venezuela  

ERIC Educational Resources Information Center

This research is an effort to analyze the process of organizational change as it takes place within one segment of the public administration mechanism in Venezuela--The Ministry of Education. (Editor/RK)

Hanson, Mark

1976-01-01

259

Especies del Orden Clypeasteroida (Echinodermata: Echinoidea) de las costas de Venezuela  

Microsoft Academic Search

Recibido 15-VIII-2007. Corregido 18-xII-2007. Aceptado 17-Ix-2008. Abstract: Species of the Order Clypeasteroida (Echinodermata: Echinoidea) from the Venezuela coasts. In Venezuela, taxonomic studies of echinoids are scarce, and most of the information is scattered in bibliographic sources or in collections from scientific expeditions deposited in foreign museums. With the aim to compile information about the species diversity of the Order Clypeasteroida

V. Francisco; S. M. Pauls

260

Four new species of Andean Pilea (Urticaceae), with additional notes on the genus in Venezuela  

PubMed Central

Abstract Four new species of Pilea (Urticaceae) from the Andes of Venezuela are described and illustrated: Pilea matthewii sp. nov., Pilea miguelii sp. nov., Pilea nicholasii sp. nov., and Pilea nidiae sp. nov. The affinities of these species and their positions within the informal classifications of Pilea proposed by Weddell and Killip are discussed. Notes on other species of Pilea found in Venezuela also are presented. PMID:25383012

Dorr, Laurence J.; Stergios, Basil

2014-01-01

261

47 CFR 95.823 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2013 CFR

... false Geographic partitioning and spectrum disaggregation. 95.823 Section...95.823 Geographic partitioning and spectrum disaggregation. (a) Eligibility...approval of geographic partitioning or spectrum disaggregation of 218-219 MHz...

2013-10-01

262

47 CFR 95.823 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2010 CFR

... false Geographic partitioning and spectrum disaggregation. 95.823 Section...95.823 Geographic partitioning and spectrum disaggregation. (a) Eligibility...approval of geographic partitioning or spectrum disaggregation of 218-219 MHz...

2010-10-01

263

47 CFR 95.823 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2011 CFR

... false Geographic partitioning and spectrum disaggregation. 95.823 Section...95.823 Geographic partitioning and spectrum disaggregation. (a) Eligibility...approval of geographic partitioning or spectrum disaggregation of 218-219 MHz...

2011-10-01

264

47 CFR 95.823 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2012 CFR

... false Geographic partitioning and spectrum disaggregation. 95.823 Section...95.823 Geographic partitioning and spectrum disaggregation. (a) Eligibility...approval of geographic partitioning or spectrum disaggregation of 218-219 MHz...

2012-10-01

265

47 CFR 95.823 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2014 CFR

... false Geographic partitioning and spectrum disaggregation. 95.823 Section...95.823 Geographic partitioning and spectrum disaggregation. (a) Eligibility...approval of geographic partitioning or spectrum disaggregation of 218-219 MHz...

2014-10-01

266

33 CFR 169.10 - What geographic coordinates are used?  

Code of Federal Regulations, 2010 CFR

... General § 169.10 What geographic coordinates are used? Geographic coordinates expressed in terms of latitude or longitude, or both, are not intended...1983 (NAD 83), unless such geographic coordinates are expressly...

2010-07-01

267

33 CFR 169.10 - What geographic coordinates are used?  

Code of Federal Regulations, 2011 CFR

... General § 169.10 What geographic coordinates are used? Geographic coordinates expressed in terms of latitude or longitude, or both, are not intended...1983 (NAD 83), unless such geographic coordinates are expressly...

2011-07-01

268

47 CFR 10.450 - Geographic targeting.  

Code of Federal Regulations, 2010 CFR

... FEDERAL COMMUNICATIONS COMMISSION GENERAL COMMERCIAL MOBILE ALERT SYSTEM Alert Message Requirements § 10.450 Geographic...Messages. A Participating CMS Provider will determine which of its network facilities, elements, and locations will be used to...

2010-10-01

269

47 CFR 10.450 - Geographic targeting.  

Code of Federal Regulations, 2011 CFR

... FEDERAL COMMUNICATIONS COMMISSION GENERAL COMMERCIAL MOBILE ALERT SYSTEM Alert Message Requirements § 10.450 Geographic...Messages. A Participating CMS Provider will determine which of its network facilities, elements, and locations will be used to...

2011-10-01

270

Geographic setting of the Bear Lake Basin  

Microsoft Academic Search

Bear Lake is one of Rich County’s most striking geographic vistas. The lake is used as a resource for irrigation and power generation, recreation and reflection, and functions as a unique fisheries habitat....

Patsy Palacios; Chris Luecke; Justin Robinson

2007-01-01

271

Why geography? Geographers study the earth's landscapes,  

E-print Network

Why geography? Geographers study the earth's landscapes, people and environment and the interactions between them. Geography bridges the social sciences (human geography) and natural sciences (physical geography). It is concerned with understanding the interactions between natural processes

Sussex, University of

272

PENNSYLVANIA GEOGRAPHIC INFORMATION SYSTEM LIBRARY: COUNTY BOUNDARIES  

EPA Science Inventory

Pennsylvania Geographic Information System (GIS) Library provides a data set of complete digitized county boundaries of the Commonwealth Of Pennsylvania at a scale of 1:24,000 from USGS topographic maps. The data format is ARC/INFO Export....

273

Geographic Concepts: A Need to be Explicit  

ERIC Educational Resources Information Center

The article focuses upon an experiment in a university class designed specifically to teach geographic concepts. Attention is placed on the degree certain concepts can be learned and some factors which affect the degree of learning. (Author)

Hudman, Lloyd E.

1972-01-01

274

Remote sensing and geographically based information systems  

NASA Technical Reports Server (NTRS)

A structure is proposed for a geographically-oriented computer-based information system applicable to the analysis of remote sensing digital data. The structure, intended to answer a wide variety of user needs, would permit multiple views of the data, provide independent management of data security, quality and integrity, and rely on automatic data filing. Problems in geographically-oriented data systems, including those related to line encoding and cell encoding, are considered.

Cicone, R. C.

1977-01-01

275

3. Historic American Buildings Survey Photocopy, National Geographic Society Photograph, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

3. Historic American Buildings Survey Photocopy, National Geographic Society Photograph, 1971 Courtesy, National Geographic Society LIBRARY, 1971 - Townsend House, 2121 Massachusetts Avenue Northwest, Washington, District of Columbia, DC

276

iRank: Integral Ranking of Geographical Information by Semantic, Geographic, and Topological Matching  

Microsoft Academic Search

Previous geographic information retrieval (GIR) works have used different criteria of a geographical nature to rank the documents\\u000a retrieved from heterogeneous repositories. The most common approaches consider the characteristics and relationships process\\u000a the documents in a separate way (only using their geometric or topologic aspects). In addition, they do not take into account\\u000a the nature of geographic data (spatial semantics)

Felix Mata; Serguei Levachkine

2009-01-01

277

Low Child Survival Index in a Multi-Dimensionally Poor Amerindian Population in Venezuela  

PubMed Central

Background Warao Amerindians, who inhabit the Orinoco Delta, are the second largest indigenous group in Venezuela.  High Warao general mortality rates were mentioned in a limited study 21 years ago. However, there have been no comprehensive studies addressing child survival across the entire population. Objectives To determine the Child Survival-Index (CSI) (ratio: still-living children/total-live births) in the Warao population, the principal causes of childhood death and the socio-demographic factors associated with childhood deaths. Methods We conducted a cross-sectional epidemiological survey of 688 women from 97 communities in 7 different subregions of the Orinoco Delta. Data collected included socio-demographic characteristics and the reproductive history of each woman surveyed. The multidimensional poverty index (MPI) was used to classify the households as deprived across the three dimensions of the Human Development Index. Multivariable linear regression and Generalized Linear Model Procedures were used to identify socioeconomic and environmental characteristics statistically associated with the CSI. Findings The average CSI was 73.8% ±26. The two most common causes of death were gastroenteritis/diarrhea (63%) and acute respiratory tract Infection/pneumonia (18%).  Deaths in children under five years accounted for 97.3% of childhood deaths, with 54% occurring in the neonatal period or first year of life.  Most of the women (95.5%) were classified as multidimensionally poor.  The general MPI in the sample was 0.56.   CSI was negatively correlated with MPI, maternal age, residence in a traditional dwelling and profession of the head of household other than nurse or teacher. Conclusions The Warao have a low CSI which is correlated with MPI and maternal age.  Infectious diseases are responsible for 85% of childhood deaths.  The low socioeconomic development, lack of infrastructure and geographic and cultural isolation suggest that an integrated approach is urgently needed to improve the child survival and overall health of the Warao Amerindians.  PMID:24392022

Villalba, Julian A.; Liu, Yushi; Alvarez, Mauyuri K.; Calderon, Luisana; Canache, Merari; Cardenas, Gaudymar; Del Nogal, Berenice; Takiff, Howard E.; De Waard, Jacobus H.

2013-01-01

278

Mapa Geologico de Venezuela a Escala 1:750,000  

USGS Publications Warehouse

Se presenta un mapa geologico digital de Venezuela sobre un fondo de relieve sombreado. Los datos geologicos e hidrologicos del norte del rio Orinoco proceden de la digitalizacion de mapas geologicos en papel a escala 1:500.000. Estos datos fueron integrados con el mapa geologico digital del Escudo de Guayana Venezolano, a su vez derivado de hojas en papel a escala 1:500.000. La informacion sobre los tipos de fallas mostrados en el mapa es igual que en las fuentes originales. Los poligonos geologicos fueron atribuidos por edad, litologia y nombre de la unidad siguiendo el Codigo geologico de Venezuela. Se incorporaron revisiones significativas de la geologia de la Cordillera de la Costa a partir de las nuevas hojas integradas a escala 1:25.000. Toda esta informacion geologico-estructural se sobrepuso a una imagen de relieve sombreado, producida por el procesamiento de los datos de radar interferometrico con 90 m (3 arcosegundos) de resolucion espacial obtenidos por la mision topografica de radar del transbordador espacial (SRTM). Las areas de la base de datos del SRTM carentes de informacion fueron llenadas por medio de la interpolacion de los datos de las celdas adyacentes. Para producir la imagen de relieve sombreado se uso una direccion de iluminacion de 315 deg con un angulo de 65 deg sobre el horizonte. La proyeccion usada en el mapa es conica equidistante, con latitudes de 4 y 9 deg norte como paralelos estandar y una longitud de 66 deg al oeste como meridiano central. Los datos en el mapa proceden primordialment de hojas a escala 1:500.000 y el producto esta preparado para una impresion optima en escala 1:750.000. Los usuarios pueden obtener ampliaciones mayores, sin embargo no se garantiza la precision del mapa a escalas mas detalladas. Especialmente en la region de Guayana, al sobreponer los mapas geologicos sobre la reciente imagen SRTM, se notan grandes discrepancias no sistematicas tanto en contactos como en fallas. Esto es debido a que los mapas geologicos de Guayana tienen como base topografica las imagenes de radar de vision lateral (SLAR), con muy control de campo de los a?os 1970's. La correccion de estos desfases esta planificada para el futuro.

Hackley, Paul C.; Urbani, Franco; Karlsen, Alex W.; Garrity, Christopher P.

2006-01-01

279

Structural Model of the Tucupita Field, Eastern Venezuela Basin  

NASA Astrophysics Data System (ADS)

The Tucupita Field has an area of 73,51 Km2, is located between the states of Monagas and Delta Amacuro, geologically is located at the greater Temblador area in the Eastern Venezuela Basin, where the Oficina Formation's sands represent the main hydrocarbons reservoirs. From the results of the seismic reprocessing realized by Fusion Petroleum Technologies, Inc., the structural model of this field was done as initial step to the geocellular model of the Oficina-40 Reservoir, which was defined as a Faulted Relay Ramp, where the normal faults are dominant with NE-SW orientation Introduction The Tucupita Field is a mature oilfield at the greater Temblador area, however most of the wells were completed in the upper sands, therefore the main study is focused in the geological characterization of the Oficina-40 Reservoir's lower sands, starting by the structural model Previous Studies 1. Proyecto Tucupita 3D The seismic data of the Tucupita Field were adquired in 1996 by Western Atlas of Venezuela for the Benton Vinccler Company. The UTM coordinates of the wells used in this project, have been taken to make this geological model 2. Soporte Geofísico Integrado The seismic project Tucupita was processed by Fusion Petroleum Technologies Inc., in Houston and consisted of reprocessing and pre-stack migration in time (PSTM) and pre-stack migration in depth (PSDM), this data belong to the Petrodelta Company Based on the regional stratigraphy, were validated the "picks" to make the structural sections to support research with hard data. After, it proceeded to interpret the structural style of the field from the seismic amplitude cube. Then, it was done the faults modelling and the stratigraphic horizons to carry out the geocellular model Three structural sections were realized, which was interpreted like a faulted monocline, whose peak is located southward, where justly the wells are located. The contact oil-water was interpreted to -5648'. Echelon faults were interpreted in a structure of the Faulted Relay Ramp (Figure 1), defined by two normal faults with orientation NE-SW, including the main fault of Tucupita Field Conclusions 1. The development of this structural model led to geological characterization of the Oficina-40 Reservoir, integrating this interpretation in a geocellular model to calculate the STOIIP.The Tucupita Field is characterized structurally as a Faulted Relay Ramp References 1. Fusion Petroleum Technologies, Inc. 2009. PROYECTO TUCUPITA SOPORTE GEOFÍSICO INTEGRADO; Figure 1. Faulted Relay Ramp, Tucupita Field

Arteaga, L. A.

2013-05-01

280

The importance of trenching in paleoseismic studies in Venezuela: brief historical summary  

NASA Astrophysics Data System (ADS)

Paleoseismic studies have proved to be a powerful tool in seismic hazards assessment by he contributing to asses the seismogenic potential of a given fault by expanding the time window o seismic activity beyond the limits of historical and instrumental seismicity. Trenching has been an essential tool for paleoseismic studies in Venezuela. The first paleoseismic trenching project in Venezuela goes back to 1968 when Compania Shell de Venezuela retained the services of Woodward Clyde and Associates,(WCA), USA to asses the seismic integrity of the earthen dikes of Costa Oriental of Lake Maracaibo Protection System (COLM) in western Venezuela. The study was carried out under the general coordination of this author. An important part of this project included a seismology and seismic geology study under the direction of Geologist L.S. Cluff. This was the first ever study undertaken in Venezuela and included two excavations across the Oca Fault north of the city of Maracaibo. After several years of inactivity, FUNVISIS (The Venezuelan Foundation for Seismological Research) carried out in 1980 a seismic hazard (SHA) for the Uribante Caparo Hydroelectric Project southwest Venezuela. In 1989, MARAVEN, an operating company of PETROLE0S DE VENEUELA S.A. (PDVSA) undertook the project of a products pipeline form Maracaibo to El Vigia, south of Lake Maracaibo. Again, FUNVISIS was contracted to carry out a SHA, which included the digging of 5 trenches, which were supplemented with five more trenches for the COLM project. Trenching activity contined in Venezuela in the framework of SHA project, under the direction of Dr. Audemard. In 2001 Venezuelan trenching experience was exported to the neighboring Colombia as e Dr. Audemard t undertook a palaoseismicity project which included the digging of five trenches. In conclusion, paleoseismicty studies have given us the possibility of extending the scope of both instrumental and historical seismicity by some 10,000 years, trenching has proved for paleoseismic studies to be a valuable to.

Murria, J.

2009-04-01

281

Modelo Crosscultural de Pasantias para Lideres de la Educacion: Cooperacion entre Estados Unidos y Venezuela (Designing an Effective School Administrator Internship Program: United States and Venezuela Cooperation).  

ERIC Educational Resources Information Center

A model was developed of an internship program designed to give valuable cross-cultural experience to school administrators in training at universities in the United States and Venezuela. A naturalistic approach was used to develop the model. Leading school administrators and educational leadership theorists in both countries were interviewed by…

Serafin, Ana Gil; Thompson, Eugene W.

282

An obstetrics and gynaecology graduate residency programme in Venezuela.  

PubMed Central

We present our experience on the design and development of a gynaecology and obstetrics graduate residency programme, developed in the Department of Obstetrics and Gynecology at the Dr Adolfo Prince Lara Hospital, Puerto Cabello, Venezuela, in which medical specialists and residents participate synergistically. From January to September 1993, curricular activities were planned and students selected. The programme started in October 1993, with six residents for a three-year programme. Courses were given by medical specialists from the Department. In addition to a Programme Coordinator, there is also a Residents' Coordinator, appointed for a two-month term of office; specific functions were assigned for residents occupying this position. All the programmed activities for three years were accomplished, including lectures and rotations, with an important record of surgical interventions. In our grade system, residents got an average of 18 over a maximum of 20 points. Residents also participated as speakers in workshops, special courses and national medicinal meetings, in which they presented a total of nine papers. Activities were evaluated bimonthly in meetings with students and each semester by the Graduate Committee. The first class graduated in September 1996. Results suggest that resident participation in graduate programmes is an important part of their education. PMID:9538482

Faneite, P.

1998-01-01

283

Gran Sabana fires (SE Venezuela): a paleoecological perspective  

NASA Astrophysics Data System (ADS)

Fires are among the most important risks for tropical ecosystems in a future climatic change scenario. Recently, paleoecological research has been addressed to discern the role played by fire in neotropical landscapes. However, given the magnitude of the Neotropics, many studies are relegated to infer just local trends. Here we present the compilation of the paleo-fire records developed until now in the southern Gran Sabana (SE Venezuela) with the aim to describe the fire history as well as to infer the possible forcing factors implied. In this sense, southern Gran Sabana has been under fire perturbation since the Lateglacial, with the concomitant effects upon vegetation, and persisted during the Holocene. Around 2000 cal yr BP onwards, the fire activity highly increased promoting the expansion of pre-existing savannas, the decrease of forests and the appearance and establishment of Mauritia palm swamps. The continuous fire incidence registered for several thousands of years has likely promoted the supremacy of treeless savannas upon other vegetation types and the degradation to secondary landscapes. Based on the available evidence, the anthropogenic nature of this high fire activity has been postulated. If so, it could be hypothesized that the timing arrival of Pemón, the present-day indigenous culture in the Gran Sabana, would be ca 2000 cal yr BP onwards, rather than the last centuries, as it has been formerly assumed. The implications of these ancient practices in the area are also discussed for present Gran Sabana landscapes sustainability and future conservation strategies.

Montoya, Encarni; Rull, Valentí

2011-11-01

284

Intestinal Parasitic Infections among Pregnant Women in Venezuela  

PubMed Central

Introduction. Intestinal parasitic infections, especially due to helminths, increase anemia in pregnant women. The results of this are low pregnancy weight gain and IUGR, followed by LBW, with its associated greater risks of infection and higher perinatal mortality rates. For these reasons, in the setting of no large previous studies in Venezuela about this problem, a national multicentric study was conducted. Methods. Pregnant women from nine states were studied, a prenatal evaluation with a coproparasitological study. Univariated and multivariated analyses were made to determine risk factors for intestinal parasitosis and related anemia. Results. During 19 months, 1038 pregnant women were included and evaluated. Intestinal parasitosis was evidenced in 73.9%: A lumbricoides 57.0%, T trichiura 36.0%, G lamblia 14.1%, E hystolitica 12.0%, N americanus 8.1%, E vermicularis 6.3%, S stercoralis 3.3%. Relative risk for anemia in those women with intestinal parasitosis was 2.56 (P < .01). Discussion. Intestinal parasitoses could be associated with conditions for development of anemia at pregnancy. These features reflect the need of routine coproparasitological study among pregnant women in rural and endemic zones for intestinal parasites. Further therapeutic and prophylactic protocols are needed. Additional research on pregnant intestinal parasitic infection impact on newborn health is also considered. PMID:17093349

Rodríguez-Morales, Alfonso J.; Barbella, Rosa A.; Case, Cynthia; Arria, Melissa; Ravelo, Marisela; Perez, Henry; Urdaneta, Oscar; Gervasio, Gloria; Rubio, Nestor; Maldonado, Andrea; Aguilera, Ymora; Viloria, Anna; Blanco, Juan J.; Colina, Magdary; Hernández, Elizabeth; Araujo, Elianet; Cabaniel, Gilberto; Benitez, Jesús; Rifakis, Pedro

2006-01-01

285

Late quaternary environmental history of Lake Valencia, Venezuela  

USGS Publications Warehouse

Chemical, paleontological, and mineralogical analyses of a 7.5-meter core from the middle of Lake Valencia, Venezuela, have provided information on the paleoclimatic history of this low-elevation, low-latitude site for the last 13,000 years. The data show that dry climates existed in this region from 13,000 years before present (B.P.) until about 10,000 years B.P. The Lake Valencia Basin was occupied by intermittent saline marshes at that time. About 10,000 years B.P., a permanent lake of fluctuating salinity formed and arboreal plant communities replaced the earlier dominant xeric herbaceous vegetation and marsh plants. By 8500 years B.P., Lake Valencia reached moderate to low salinities and discharged water; the modern vegetation became established at that time. After 8500 years B.P., the lake twice ceased discharging as a result of reduced watershed moisture. The second of these drying episodes is still in progress and has been aggravated by human activities in the watershed. Copyright ?? 1981 AAAS.

Platt, Bradbury J.; Leyden, B.; Salgado-Labouriau, M.; Lewis, W.M., Jr.; Schubert, C.; Binford, M.W.; Frey, D.G.; Whitehead, D.R.; Weibezahn, F.H.

1981-01-01

286

Confronting Health Disparities: Latin American Social Medicine in Venezuela  

PubMed Central

Objectives. We explored the emergence and effectiveness of Venezuela's Misión Barrio Adentro, “Inside the Neighborhood Mission,” a program designed to improve access to health care among underserved residents of the country, hoping to draw lessons to apply to future attempts to address acute health disparities. Methods. We conducted our study in 3 capital-region neighborhoods, 2 small cities, and 2 rural areas, combining systematic observations with interviews of 221 residents, 41 health professionals, and 28 government officials. We surveyed 177 female and 91 male heads of household. Results. Interviews suggested that Misión Barrio Adentro emerged from creative interactions between policymakers, clinicians, community workers, and residents, adopting flexible, problem-solving strategies. In addition, data indicated that egalitarian physician–patient relationships and the direct involvement of local health committees overcame distrust and generated popular support for the program. Media and opposition antagonism complicated physicians’ lives and clinical practices but heightened the program's visibility. Conclusions. Top-down and bottom-up efforts are less effective than “horizontal” collaborations between professionals and residents in underserved communities. Direct, local involvement can generate creative and dynamic efforts to address acute health disparities in these areas. PMID:19150916

Mantini-Briggs, Clara

2009-01-01

287

New Insights into Chloramphenicol Biosynthesis in Streptomyces venezuelae ATCC 10712  

PubMed Central

Comparative genome analysis revealed seven uncharacterized genes, sven0909 to sven0915, adjacent to the previously identified chloramphenicol biosynthetic gene cluster (sven0916–sven0928) of Streptomyces venezuelae strain ATCC 10712 that was absent in a closely related Streptomyces strain that does not produce chloramphenicol. Transcriptional analysis suggested that three of these genes might be involved in chloramphenicol production, a prediction confirmed by the construction of deletion mutants. These three genes encode a cluster-associated transcriptional activator (Sven0913), a phosphopantetheinyl transferase (Sven0914), and a Na+/H+ antiporter (Sven0915). Bioinformatic analysis also revealed the presence of a previously undetected gene, sven0925, embedded within the chloramphenicol biosynthetic gene cluster that appears to encode an acyl carrier protein, bringing the number of new genes likely to be involved in chloramphenicol production to four. Microarray experiments and synteny comparisons also suggest that sven0929 is part of the biosynthetic gene cluster. This has allowed us to propose an updated and revised version of the chloramphenicol biosynthetic pathway. PMID:25267678

Fernández-Martínez, Lorena T.; Borsetto, Chiara; Gomez-Escribano, Juan Pablo; Bibb, Maureen J.; Al-Bassam, Mahmoud M.; Chandra, Govind

2014-01-01

288

Geographical networks evolving with optimal policy  

E-print Network

In this article, we propose a growing network model based on an optimal policy involving both topological and geographical ingredients. In this model, at each time step, a new node, having randomly assigned coordinates in a $1 \\times 1$ square, is added and connected with a previously existing node $i$ which minimizes the quantity $r_i^2/k_i^\\alpha$, where $r_i$ denotes the geographical distance, $k_i$ is the degree, and $\\alpha$ is a free parameter. The degree distribution obeys a power-law form when $\\alpha=1$, and an exponential form when $\\alpha=0$. When $\\alpha$ is in the interval $(0,1)$, the networks exhibit the stretched exponential distribution. We prove that the average topological distance increases in a logarithmic scale of network size, indicating the existence of small-world property. Furthermore, we analytically obtain the geographical edge-length distribution, the total geographical length of all edges, and the average geographical distance of whole network. Interestingly, we find that the tot...

Xie, Y B; Bai, W J; Xiao, W K; Wang, B H; Xie, Yan-Bo; Zhou, Tao; Bai, Wen-Jie; Xiao, Wei-Ke; Wang, Bing-Hong

2006-01-01

289

Geographical distribution of the dermatophytes: a review.  

PubMed Central

In these days of rapid transit from continent to continent, and the increasing mobility of people, agents of disease are no longer geographically restricted. Disease contracted half way across the world may become manifest in a country in which the pathogen is not normally found. Thus knowledge of the geographical distribution of pathogens becomes increasingly important when a diagnosis is being made. This is as true of ringworm fungi as of any other group of microorganisms. In the last 12 years, in the Mycological Reference Laboratory, an increasing number of exotic dermatophytes have been seen, related in part at least to the great increase in the number of non-British residents. Not all species of dermatophytes are cosmopolitan in their distribution throughout the world. While some have been recorded from every continent, others have geographically limited areas of greater or lesser extent. Surveys taken at intervals in a country may show a rise and fall in occurrence of several species as habits change, populations move and medical facilities became increasingly well-distributed. There have been few geographical surveys of ringworm fungi that have covered the world. Ajello (1960, 1974) has reviewed the individual species with regard to geographical location, while Vanbreuseghem & de Vroey (1970) attempted to estimate the relative importance of the various species in terms of numbers of isolations reported. This paper therefore reviews the world dermatophyte flora in terms of the dominant agents in the various countries, and some of the changes that have been recorded. PMID:75918

Philpot, C. M.

1978-01-01

290

Photographic Mosaics and Geographic Generalizations: A Perceptual Approach to Geographic Education  

ERIC Educational Resources Information Center

If vision can be considered the basis of geographic inquiry, then it must involve looking with discrimination--the ability to discern clues in our surroundings that speak to spatial processes or patterns in all aspects of geography--physical, cultural, economic, and so on. Geographic thinking also involves making spatial generalizations. We do…

Castner, Henry W.

2003-01-01

291

GEOGRAPHICAL APPROACHES TO CROP CONSERVATION: THE PARTITIONINGOF GENETIC DIVERSITY IN  

E-print Network

and Williams 1984). Systematic field re- search indicates a geographically uneven persis- tence of diverseGEOGRAPHICAL APPROACHES TO CROP CONSERVATION: THE PARTITIONINGOF GENETIC DIVERSITY IN ANDEAN:ThEPARTmO~GOFGENETICDIVERSITYINA~q~Ea,NPOTATOES.Economic Botany 45(2): 176-189. 1991. The geographical concepts of spatial scale and the human-geographic region

Douches, David S.

292

Introduction to the Complex Geospatial Web in Geographical Education  

ERIC Educational Resources Information Center

The Geospatial Web is emerging in the geographical education landscape in all its complexity. How will geographers and educators react? What are the most important facets of this development? After reviewing the possible impacts on geographical education, it can be conjectured that the Geospatial Web will eventually replace the usual geographical…

Papadimitriou, Fivos

2010-01-01

293

Geographic variation in marine turtle fibropapillomatosis  

USGS Publications Warehouse

We document three examples of fibropapillomatosis by histology, quantitative polymerase chain reaction (qPCR), and sequence analysis from three different geographic areas. Tumors compatible in morphology with fibropapillomatosis were seen in green turtles from Puerto Rico and San Diego (California) and in a hybrid loggerhead/ hawksbill turtle from Florida Bay (Florida). Tumors were confirmed as fibropapillomas on histology, although severity of disease varied between cases. Polymerase chain reaction (PCR) analyses revealed infection with the fibropapilloma-associated turtle herpesvirus (FPTHV) in all cases, albeit at highly variable copy numbers per cell. Alignment of a portion of the polymerase gene from each fibropapilloma-associated turtle herpesvirus isolate demonstrated geographic variation in sequence. These cases illustrate geographic variation in both the pathology and the virology of fibropapillomatosis.

Greenblatt, R.J.; Work, T.M.; Dutton, P.; Sutton, C.A.; Spraker, T.R.; Casey, R.N.; Diez, C.E.; Parker, D.; St. Ledger, J.; Balazs, G.H.; Casey, J.W.

2005-01-01

294

Hierarchical Spatial Organization of Geographical Networks  

E-print Network

In this work we propose the use of a hirarchical extension of the polygonality index as a means to characterize and model geographical networks: each node is associated with the spatial position of the nodes, while the edges of the network are defined by progressive connectivity adjacencies. Through the analysis of such networks, while relating its topological and geometrical properties, it is possible to obtain important indications about the development dynamics of the networks under analysis. The potential of the methodology is illustrated with respect to synthetic geographical networks.

Travencolo, Bruno A N

2007-01-01

295

The National Council for Geographic Education  

NSDL National Science Digital Library

The National Council for Geographic Education (NCGE) is an international organization that emphasizes the importance of geographic education at all age levels â?? in school and out. They boast a membership of â??teachers, professors, students, and other individuals who believe in the importance of geography, both in and out of school.â? NCGE distributes two widely-known and well-subscribed journals, the Journal of Geography and The Geography Teacher. These journals are available to all members along with other e-leaning publications and web-based teaching resources.

296

Geographical variation in Plasmodium vivax relapse  

PubMed Central

Background Plasmodium vivax has the widest geographic distribution of the human malaria parasites and nearly 2.5 billion people live at risk of infection. The control of P. vivax in individuals and populations is complicated by its ability to relapse weeks to months after initial infection. Strains of P. vivax from different geographical areas are thought to exhibit varied relapse timings. In tropical regions strains relapse quickly (three to six weeks), whereas those in temperate regions do so more slowly (six to twelve months), but no comprehensive assessment of evidence has been conducted. Here observed patterns of relapse periodicity are used to generate predictions of relapse incidence within geographic regions representative of varying parasite transmission. Methods A global review of reports of P. vivax relapse in patients not treated with a radical cure was conducted. Records of time to first P. vivax relapse were positioned by geographic origin relative to expert opinion regions of relapse behaviour and epidemiological zones. Mixed-effects meta-analysis was conducted to determine which geographic classification best described the data, such that a description of the pattern of relapse periodicity within each region could be described. Model outputs of incidence and mean time to relapse were mapped to illustrate the global variation in relapse. Results Differences in relapse periodicity were best described by a historical geographic classification system used to describe malaria transmission zones based on areas sharing zoological and ecological features. Maps of incidence and time to relapse showed high relapse frequency to be predominant in tropical regions and prolonged relapse in temperate areas. Conclusions The results indicate that relapse periodicity varies systematically by geographic region and are categorized by nine global regions characterized by similar malaria transmission dynamics. This indicates that relapse may be an adaptation evolved to exploit seasonal changes in vector survival and therefore optimize transmission. Geographic patterns in P. vivax relapse are important to clinicians treating individual infections, epidemiologists trying to infer P. vivax burden, and public health officials trying to control and eliminate the disease in human populations. PMID:24731298

2014-01-01

297

Location of geographical objects in crisis situations  

NASA Astrophysics Data System (ADS)

This article summarizes the various expressions of object positioning using different coordinate data and different methods, such as use of maps, exploiting the properties of digital Global System for Mobile Communications (GSM) networks, Global Navigational Satellite Systems (GNSS), Inertial Navigation Systems (INS), Inertial Measurement Systems (IMS), hybrid methods and non-contact (remote sensing) methods; all with varying level of accuracy. Furthermore, the article describes some geographical identifiers and verbal means to describe location of geographical objects such as settlements, rivers, forest, roads, etc. All of the location methods have some advantages and disadvantages, especially in emergency situations, when usually the crisis management has a lack of time in a decision process.

Rybansky, M.; Kratochvil, V.

2014-02-01

298

Bismark State College: Geographic Information Systems Technician  

NSDL National Science Digital Library

Bismarck State College offers a program certificate, a certificate of completion, and an Associate in Applied Science degree in Geographic Information Systems (GIS). GIS is the only software program available that can capture and store geospatial data, which allows users to ask and answer complex questions about the world around us through complex geographic queries. GIScience is the multidisciplinary science behind the technology that incorporates cartography, geodesy, photogrammetry, remote sensing, GPS, and other geospatial sciences with the technology. Visit this page for more information on Bismark State College's GIS curriculum.

299

Global change: Geographical approaches (A Review)*  

PubMed Central

The International Geosphere Biosphere Program sponsored by the International Council of Scientific Unions is directing attention to geophysical and biological change as influenced by human modifications in global energy and mass exchanges. Geographers in the Soviet Union and the United States have joined in critical appraisal of their experience in studying environmental change. This initial report is on some promising approaches, such as the reconstruction of earlier landscape processes, modeling of the dynamics of present-day landscapes, analysis of causes and consequences of anthropogenic changes in specified regions, appraisal of social response to change, and enhanced geographic information systems supported by detailed site studies. PMID:16593971

Kotlyakov, V. M.; Mather, J. R.; Sdasyuk, G. V.; White, G. F.

1988-01-01

300

EFECTO DE LA APLICACIÓN DE RESIDUOS ORGÁNICOS SOBRE EL CULTIVO DEL MAÍZ EN SUELOS DEGRADADOS DEL ESTADO YARACUY, VENEZUELA  

Microsoft Academic Search

Effect of applications of organic residues on maize performance in two soils of Yaracuy State, Venezuela The intense land cultivation for maize cropping on the last 50 years in Yaracuy State, Venezuela, caused an accelerated soil degradation expressed by loss of soil organic matter and crop productivity. With the objective of improving those parameters, the use of organic residues were

Isabel Arrieche; Orlando Mora

2005-01-01

301

PROGRAMACIÓN DEL RIEGO EN CAÑA DE AZÚCAR EN UNA ZONA SEMIÁRIDA DEL ESTADO LARA, VENEZUELA, UTILIZANDO LA METODOLOGÍA FAO56  

Microsoft Academic Search

Daily water balance for sugarcane irrigation scheduling in a semiarid region in Venezuela by using the FAO-56 methodology To optimize the water use efficiency of sugarcane (Saccharum officinarum) grown under sprinkle irrigation in the semiarid region of Lara State, Venezuela, an irrigation program was scheduled based on the daily water balance in the root zone. The FAO-56 methodology was applied

Ricardo Trezza; Yelitza Pacheco; Yamileth Suárez; Aixa Nuñez

2008-01-01

302

PLANTAS CULTIVADAS Y SILVESTRES HOSPEDERAS DE Thrips tabaci Y Thrips palmi (Thysanoptera:Thripidae) EN QUÍBOR, ESTADO LARA, VENEZUELA  

Microsoft Academic Search

Cultivated and wild plants hosting Thrips tabaci and Thrips palmi (Thysanoptera:Thripidae) in Quíbor valley, Lara State, Venezuela The presence of the bean yellow trips Thrips palmi Karny, and the onion thrips Thrips tabaci Lindeman (Thysanoptera: Thripidae) on different cultivated and wild plants in rainy and dry seasons was recorded in several places of Quíbor valley, Lara State, Venezuela. Adults of

Jorge Salas

2003-01-01

303

Expression of the chaplin and rodlin hydrophobic sheath proteins in Streptomyces venezuelae is controlled by sBldN  

E-print Network

Expression of the chaplin and rodlin hydrophobic sheath proteins in Streptomyces venezuelae in Streptomyces, and mutants lacking the chaplins are unable to erect aerial hyphae and differentiate on minimal) genes by exploiting a new model species, Streptomyces venezuelae, which sporulates in liquid culture

Buttner, Mark

304

STSHV a teleinformatic system for historic seismology in Venezuela  

NASA Astrophysics Data System (ADS)

From 1997 on, when the first "Jornadas Venezolanas de Sismicidad Historica" took place, a big interest awoke in Venezuela to organize the available information related to historic earthquakes. At that moment only existed one published historic earthquake catalogue, that from Centeno Grau published the first time in 1949. That catalogue had no references about the sources of information. Other catalogues existed but they were internal reports for the petroleum companies and therefore difficult to access. In 2000 Grases et al reedited the Centeno-Grau catalogue, it ended up in a new, very complete catalogue with all the sources well referenced and updated. The next step to organize historic seismicity data was, from 2004 to 2008, the creation of the STSHV (Sistema de teleinformacion de Sismologia Historica Venezolana, http://sismicidad.hacer.ula.ve ). The idea was to bring together all information about destructive historic earthquakes in Venezuela in one place in the internet so it could be accessed easily by a widespread public. There are two ways to access the system. The first one, selecting an earthquake or a list of earthquakes, and the second one, selecting an information source or a list of sources. For each earthquake there is a summary of general information and additional materials: a list with the source parameters published by different authors, a list with intensities assessed by different authors, a list of information sources, a short text summarizing the historic situation at the time of the earthquake and a list of pictures if available. There are searching facilities for the seismic events and dynamic maps can be created. The information sources are classified in: books, handwritten documents, transcription of handwritten documents, documents published in books, journals and congress memories, newspapers, seismologic catalogues and electronic sources. There are facilities to find specific documents or lists of documents with common characteristics. For each document general information is displayed together with an extract of the information relating to the earthquake. If the complete document was available and no problem with the publishers rights a pdf copy of the document was included. We found this system extremely useful for studying historic earthquakes, as one can access immediately previous research works about an earthquake and it allows to check easily the historic information and so to validate the intensity data. So far, the intensity data have not been completed for earthquakes after 2000. This information would be important for improving calibration of intensity - magnitude calibrations of historic events, and is a work in progress. On the other hand, it is important to mention that "El Catálogo Sismológico Venezolano del siglo XX" (The Seismological Venezuelan Catalog), published in 2012, updates seismic information up to 2007, and that the STSHV was one of its primary sources of information.

Choy, J. E.; Palme, C.; Altez, R.; Aranguren, R.; Guada, C.; Silva, J.

2013-05-01

305

Tectonothermal modeling of hydrocarbon maturation, Central Maracaibo Basin, Venezuela  

SciTech Connect

The petroliferous Maracaibo Basin of northwestern Venezuela and extreme eastern Colombia has evolved through a complex geologic history. Deciphering the tectonic and thermal evolution is essential in the prediction of hydrocarbon maturation (timing) within the basin. Individual wells in two areas of the central basin, Blocks III and V, have been modeled to predict timing of hydrocarbon generation within the source Upper Cretaceous La Luna Formation, as well as within interbedded shales of the Lower-Middle Eocene Misoa Formation reservoir sandstones. Tectonic evolution, including burial and uplift (erosional) history, has been constrained with available well data. The initial extensional thermal regime of the basin has been approximated with a Mackenzie-type thermal model, and the following compressional stage of basin development by applying a foreland basin model. Corrected Bottom Hole Temperature (BHT) measurements; from wells in the central basin, along with thermal conductivity measurements of rock samples from the entire sedimentary sequence, resulted in the estimation of present day heat flow. An understanding of the basin`s heat flow, then, allowed extrapolation of geothermal gradients through time. The relation of geothermal gradients and overpressure within the Upper Cretaceous hydrocarbon-generating La Luna Formation and thick Colon Formation shales was also taken into account. Maturation modeling by both the conventional Time-Temperature Index (TTI) and kinetic Transformation Ratio (TR) methods predicts the timing of hydrocarbon maturation in the potential source units of these two wells. These modeling results are constrained by vitrinite reflectance and illite/smectite clay dehydration data, and show general agreement. These results also have importance regarding the timing of structural formation and hydrocarbon migration into Misoa reservoirs.

Manske, M.C. [OMNI Laboratories, Inc., Maracaibo (Venezuela)

1996-08-01

306

A 75 ka Stalagmite Paleoclimate Record from Northern Venezuela  

NASA Astrophysics Data System (ADS)

A stalagmite collected from Cueva Zarraga in the northern Venezuelan Andes was analyzed to determine local paleoclimatic history and help examine climate change in the Caribbean. Ages were determined by U/Th disequilibrium and the stalagmite shows a nearly complete record for ~ 75 ka. Two significant periods of non-deposition have been identified. The first period ranges between the Last Glacial Maximum at 19,820 ± 149 cal yr BP and a brief resumption of stalagmite growth at 15,409 ± 747 cal yr BP, likely representing the Bølling-Allerød interstadial. After the brief period of deposition, growth does not resume unil the Holocene at 10,408 ± 78 cal yr BP. Carbon and oxygen isotopes show a major depletion shift from the last glacial period to the Holocene, suggesting warmer and wetter conditions during the Holocene. The oxygen isotope depletion shift is also seen in the Cariaco Basin foraminifera record off the northern coast of Venezuela. While tempting to attribute ?13C depletion to decrease of the C4 plant contribution, there is no evidence that the area experience major vegetation changes. We attribute the ?13C depletion to enhanced recycling of soil CO2 resulting from canopy effects. Today, Cueva Zarraga is at the northern extent of the Inter-Tropical Convergence Zone (ITCZ). The cooler and drier conditions of the last glacial period suggest a southern displacement of the ITCZ. The close proximity of Cueva Zarraga to Cariaco Basin may allow for a high resolution tropical terrestrial and oceanic climatic response comparison.

Retrum, J. B.; Gonzalez, L. A.; Edwards, R.; Tincher, S. M.; Cheng, H.; Urbani, F.

2011-12-01

307

Lithospheric scale model of Merida Andes, Venezuela (GIAME Project)  

NASA Astrophysics Data System (ADS)

Merida Andes (MA) is one of the most important orogenic belt in Venezuela and represents the northern culmination of South America Andes. During the last 60 years, several models have been proposed to explain the shallow and deep structure, using different geological, geophysical, seismological, geochemical and petrologic concepts; nevertheless, most of them have applied local observation windows, and do not represent the major structure of MA. Therefore, a multidisciplinary research group, coordinated by FUNVISIS, in close cooperation with UCV, ULA and PDVSA, is proposed in order to get the outlined goals in the project entitled GIAME ("Geociencia Integral de los Andes de MErida") was established, which aims to generate a lithospheric scale model and the development of a temporal dynamic model for the MA. As a base for lithospheric investigations of the Merida Andes, we are proposing three wide angle seismic profiles across the orogen on three representative sites, in order to determine the inner structure and its relation with the orogen's gravimetric root. To the date, there are no seismic studies at lithospheric scale which cross MA. The wide angle seismic will be complemented with the re-processing and re-interpretation of existing reflection seismic data, which will allow to establish a relationship between MA and its associated flexural basins (Maracaibo and Barinas-Apure basins). Depending on the results of the VENCORP Project (VENezuelan COntinental Reflection Profiling), which might show some reliable results about crustal features and Moho reflectors along three long seismic profiles at Caribbean Moutain system, a reflection seismic profile across the central portion of MA is proposed. Additional tasks, consisting in MA quaternary deformation studies, using research methods like neotectonics and paleoseismology, georadar, numerical modeling, cinematic GPS, SAR interferometry, thermocronology, detailed studies on regional geology, flexural modeling, gravity modeling, among others, will be carried out. We expect this project is going to help to solve many of the doubts regarding the origin, evolution and structural configuration of the Merida Andes.

Schmitz, M.; Orihuela, N. D.; Klarica, S.; Gil, E.; Levander, A.; Audemard, F. A.; Mazuera, F.; Avila, J.

2013-05-01

308

Neogene history of the Carapita Formation, Eastern Venezuela basin  

NASA Astrophysics Data System (ADS)

The planktonic and benthic foraminifera from the lower to middle Miocene shales of the Carapita Formation of Eastern Venezuela in three exploration wells and one outcrop section are analyzed with the objectives of establishing a precise biostratigraphy of the formation and its bathymetric history. Comparison with the well-preserved microfaunas of the correlative Cipero Formation of Trinidad made possible the achievement of these objectives. The formation, up to 4500 to 6000 m thick in outcrops, extends from northeastern Anzoategui and North of Monagas States to the Gulf of Paria and is both an important oil reservoir towards the east and the main seal rock for the Oligocene reservoir in the north of Monagas State. In the area studied the Carapita Formation spans lower to lower middle Miocene Zones N6/M3 to N9/M6; its upper part is unconstrained as only rare long ranging early Miocene to early Pliocene planktonic foraminifera occur above the Orbulina datum. Unexpectedly, we found that the four lower to middle Miocene sections are highly discontinuous, with hiastuses as long as 4 Myr. Based on the abundance patterns of sixty-nine species of benthic foraminifera and analysis of morphotype abundance following the methodology of Corliss and Chen (1988) and Corliss and Fois (1993), we show that the Carapita Formation was deposited at outer neritic to middle bathyal depths (?200--1000 m), whereas the Cipero Formation was deposited at middle to lower bathyal depths (?600--2000 m). Importantly, the bathymetric changes are associated with unconformities in all sections, strongly suggesting that both (shallowing and associated unconformities) were tectonically induced.

Sanchez Zambrano, Dennis Alberto

309

Using Ontologies for Integrated Geographic Information Systems  

E-print Network

is to introduce a GIS architecture that can enable geographic information integration in a seamless and flexible ontologies the users can be provided with information about the embedded knowledge of the system. Special increasingly distributed and heterogeneous. Digital Libraries are an important component of #12;3 this emerging

Camara, Gilberto

310

The Global Struggle over Geographic Indications  

Microsoft Academic Search

Geographic indications (GIs) stand at the intersection of three hotly debated issues in international law: international trade, intellectual property and agricultural policy. Akin to a trademark, a GI identifies a good as originating in a particular region, where a given quality of the good is attributable to its place of origin. Well-known GIs include champagne and prosciutto di Parma. Although

Kal Raustiala; Stephen R. Munzer

2007-01-01

311

The Geographical Space of China's Tourism Websites  

Microsoft Academic Search

A new special space is being constructed from information and user flows based on tourism websites and the links among them. While greater attention has been paid to the economic, technological and user behaviour aspects, tourism websites also deserve to be studied from the perspective of space using geographical methods. This paper is a cybergeographical study of tourism websites. Based

Jia Liu; Jie Zhang; Geoffrey Wall

2008-01-01

312

Inferring Geographic Isolation of Wolverines in California  

Microsoft Academic Search

Delineating a species' geographic range using the spatial distribution of museum specimens or even contemporary detection- non-detection data can be difficult. This is particularly true at the periphery of a species range where species' distributions are often disjunct. Wolverines (Gulo gulo) are wide-ranging mammals with discontinuous and potentially isolated populations at the periphery of their range. One potentially disjunct population

313

NATIONAL GEOGRAPHIC'S "Swimming Tongue" Catfish Sense  

E-print Network

Aquarium The keen senses of smell, taste, hearing, and vibration detection of the sea catfish, Plotosus active and searching for food. Many animals can sense pH changes, even humans. Our ability to tasteNATIONAL GEOGRAPHIC'S "Swimming Tongue" Catfish Sense Chemicals in Prey's Breath Posted by Mary

Hart, Craig M.

314

Geographic Education in Turkish High Schools  

ERIC Educational Resources Information Center

This paper presents a review of geographic curricula, teaching methods, materials and assessments in Turkish high schools. Geopolitics and political instability have contributed to large fluctuations in emphasis on geography in Turkish education and have also affected the content of the geography curriculum.

Tas, Halil I.

2005-01-01

315

Displaying Geographically-Based Domestic Statistics  

NASA Technical Reports Server (NTRS)

Decision Information Display System (DIDS) is rapid-response information-retrieval and color-graphics display system. DIDS transforms tables of geographically-based domestic statistics (such as population or unemployment by county, energy usage by county, or air-quality figures) into high-resolution, color-coded maps on television display screen.

Quann, J.; Dalton, J.; Banks, M.; Helfer, D.; Szczur, M.; Winkert, G.; Billingsley, J.; Borgstede, R.; Chen, J.; Chen, L.; Fuh, J.; Cyprych, E.

1982-01-01

316

Promoting Geographic Information System Usage across Campus  

ERIC Educational Resources Information Center

In this article the authors discuss how they implemented and promoted Geographic Information System (GIS) applications at Weber State University (WSU), a four-year public institution with two campuses. GIS is a type of computer system made of hardware, software, and data that allows the mapping of spatially related layers that have a common…

Spiegel, Shaun; Kinikin, Janae

2004-01-01

317

Relation Between Psoriasis and Geographic Tongue  

PubMed Central

The aim this article is to investigate the link between geographic tongue and psoriasis skin disease. Our review paper of the literature will handle strict study about the relation between geographic tongue and psoriasis. Our search has identified only limited studies available in English written literature starting from 2006-2013 using pubMed – indexed for MEDLINE. The result of this review suggests that geographic tongue may be an oral manifestation of psoriasis.There is no clear evidence in literature about association with gender and aetiology except one study which shows that benign migratory glossitis is more prevalent in young, nonsmoker and atopic or allergic individuals. Treatment for oral lesions is not standardized. A geographic tongue is significantly more frequent in psoriatic patients but only a limited data is available to date to strongly validate the association between these two entities.We recommend the general practitioner to have a good understanding about the clinical presentation, pathogenesis, diagnosis and treatment of this lesion. Psoriatic patients should be encouraged to undergo routine dental checkups. PMID:25584342

Umair, Ayesha; Babaker, Zynab; SN, Azzeghaiby; Gazal, Giath; Sarraj, Faysal

2014-01-01

318

Perceiving Virtual Geographical Slant: Action Influences Perception  

ERIC Educational Resources Information Center

In 4 experiments, the authors varied the extent and nature of participant movement in a virtual environment to examine the influence of action on estimates of geographical slant. Previous studies showed that people consciously overestimate hill slant but can still accurately guide an action toward the hill (D. R. Proffitt, M. Bhalla, R.…

Creem-Regehr, Sarah H.; Gooch, Amy A.; Sahm, Cynthia S.; Thompson, William B.

2004-01-01

319

Maximum entropy modeling of species geographic distributions  

Microsoft Academic Search

The availability of detailed environmental data, together with inexpensive and powerful computers, has fueled a rapid increase in predictive modeling of species environmental requirements and geographic distributions. For some species, detailed presence\\/absence occurrence data are available, allowing the use of a variety of standard statistical techniques. However, absence data are not available for most species. In this paper, we introduce

Steven J. Phillips; Robert P. Anderson; Robert E. Schapire

2006-01-01

320

Teaching Geographic Concepts through Fieldwork and Competition  

ERIC Educational Resources Information Center

This article describes the benefits of combining field-based learning within the context of a competitive setting in the geography curriculum. Findings and data are presented based on experiences gathered from teaching an upper-level university geography course that combined geographic techniques and theory into a game of capture-the-flag.…

Hupy, Joseph P.

2011-01-01

321

GEOGRAPHIC INDEX OF ENVIRONMENTAL ARTICLES - 1992  

EPA Science Inventory

This index was produced in accordance with the Environmental Research Geographic Location Information Act, Public Law 101-617, enacted by the United States Congress on November 16, 1990. ompiled by the U.S. Environmental Protection Agency, it is intended as a quick reference for ...

322

GEOGRAPHIC INDEX OF ENVIRONMENTAL ARTICLES - 1993  

EPA Science Inventory

This index was produced in accordance with the Environmental Research Geographic Location Information Act, Public Law 101-617, enacted by the United States Congress on November 16, 1990. ompiled by the U.S. Environmental Protection Agency, it is intended as a quick reference for ...

323

The Structure of Geographical Threshold Graphs  

Microsoft Academic Search

We analyze the structure of random graphs generated by the geographical threshold model. The model is a generalization of random geometric graphs. Nodes are distributed in space, and edges are assigned according to a threshold function involving the distance between nodes as well as randomly chosen node weights. We show how the degree distribution, percolation and connectivity transitions, clustering coefficient,

Milan Bradonjic; Aric A. Hagberg; Allon G. Percus

2008-01-01

324

PENNSYLVANIA GEOGRAPHIC INFORMATION SYSTEM LIBRARY: STATE GAMELAND  

EPA Science Inventory

Pennsylvania Geographic Information System (GIS) Library provides a data set of state gameland boundaries digitized from 1:24,000 USGS topographic maps and verified from Pennsylvania Fish and Game Department information. Coverage is incomplete, certain areas are not mapped when ...

325

Geographic Profile of Employment and Unemployment, 1999  

NSDL National Science Digital Library

Released last week, the Bureau of Labor Statistics' (BLS) Geographic Profile of Employment and Unemployment, 1999 presents 28 tables of employment and unemployment data from two sources, the Census Bureau's Current Population Survey (CPS) and the Local Area Unemployment Statistics (LAUS) program. The 159-page report may be downloaded in its entirety or by table in .pdf format.

2001-01-01

326

Geologic vs. geographic constraints on cement resources  

Microsoft Academic Search

This study evaluates the importance of geologic and geographic factors in constraining the location of limestone mining operations for the production of cement in the Great Lakes region of the United States. Cities and their infrastructure require abundant cement, which is manufactured from limestone and other quarry products, but expansion of cities limits the locations of these operations. Possible locations

Alissa Kendall; Stephen E. Kesler; Gregory A. Keoleian

2008-01-01

327

A syllabus for teaching geographical information systems  

Microsoft Academic Search

The problems in teaching a course on geographical information systems in higher education are reviewed and a possible syllabus that will be most relevant to needs in the United Kingdom is suggested. The syllabus is divided into six major sections relating to the context, cartographic and spatial analytical concepts, their realization in a computing environment, operations, applications and institutional issues.

DAVID J. UNWIN

1990-01-01

328

Enhancing Geographic Learning and Literacy through Filmmaking  

ERIC Educational Resources Information Center

In this media-saturated society, students need to think more critically about the media they encounter and that they are producing. Through filmmaking, students can link geographic theory and the real world, bridging the distance from readings/lectures/discussions to the geography on the ground, making the abstract concrete. But constructing films…

Dando, Christina E.; Chadwick, Jacob J.

2014-01-01

329

Jared M. Diamond: physiologist, ornithologist, geographer, ecologist  

E-print Network

Jared M. Diamond: physiologist, ornithologist, geographer, ecologist John C. Mittermeier Louisiana State University, BIOL 7083 April 3, 2014 #12;Why Jared Diamond? #12;#12;1937 1961 1966 1964 #12;In Diamond's words, he divides his time between four things 1. Teaching undergraduate geography 2. Field

Harms, Kyle E.

330

The Geographic Distribution of Indochinese Refugees.  

ERIC Educational Resources Information Center

This paper presents information regarding the geographic distribution of Indochinese refugees in the United States and how it compares to that of the overall U.S. population and the non-refugee legal immigrant population. The following information is reported: Seventy percent of all Indochinese refugees currently reside in 10 States, with…

Forbes, Susan

331

What is a Geographical Information System?  

NSDL National Science Digital Library

From Foothill College and the Using a Web-Based GIS to Teach Problem-Based Science in High School and College project, this powerpoint provides an overview of geographical information systems. It provides background by defining maps and explaining the need for them. The presentation also covers the progression from maps to online maps to GIS software with a comparison of the three.

332

Validating a Geographical Image Retrieval System.  

ERIC Educational Resources Information Center

Summarizes a prototype geographical image retrieval system that demonstrates how to integrate image processing and information analysis techniques to support large-scale content-based image retrieval. Describes an experiment to validate the performance of this image retrieval system against that of human subjects by examining similarity analysis…

Zhu, Bin; Chen, Hsinchun

2000-01-01

333

5 Data Quality Issues and Geographic  

E-print Network

99 5 Data Quality Issues and Geographic Knowledge Discovery Marc Gervais Department of Geomatics Sciences, and Centre for Research in Geomatics, Laval University, Quebec City, Canada Yvan Bedard Department of Geomatics Sciences, and Centre for Research in Geomatics, and Canada NSERC Industrial Research

334

Towards a Taxonomy of Geographical Information Systems  

Microsoft Academic Search

This paper places geographical information systems (GZS) in the context of information systems generally and spe@cally illustrates how GIS may be classified by adapting an earlier taxonomy of information systems. The recent literature on information systems taxonomies is critically reviewed and an earlier taxonomy is tested and applied against several case study organisations who use GIS. It is suggested that

David J. Grimshaw

1996-01-01

335

Frontiers in Geographical Teaching. Second Edition.  

ERIC Educational Resources Information Center

Composed of three parts, "Concepts,""Techniques," and "Teaching," this volume of essays by British geographers emerged from the editors' geography education courses and symposia at Cambridge University. It is addressed to two questions: what is happening in geography? and, what impact does this have on school geography? "Concepts" has seven essays…

Chorley, Richard J., Ed.; Haggett, Peter, Ed.

336

PROBLEMS AND PROSPECTS IN GEOGRAPHICAL PHOTOINTERPRETATION  

E-print Network

of automatic geographical photo-interpretation in existence today. There are, however, several systems corresponding points in the two images. Contour maps are automatically produced as a by-product. Another recent with a 50% transmittance, in front of a light source then the total light transmitted is 25%, i.e. (0.5 x 0

Tobler, Waldo

337

Geographical Distribution of Crater Depths on Mars  

E-print Network

Geographical Distribution of Crater Depths on Mars Tomasz F. Stepinski #12;Content · Global auto-detection of craters from MOLA topography · Comparison to "standard" Barlow global catalog of craters · Implication for extent of cryosphere · Where are the deepest craters on Mars? · Where are the shallowest craters on Mars

Stepinski, Tomasz F.

338

Representing Historical Knowledge in Geographic Information Systems  

ERIC Educational Resources Information Center

A growing number of historical scholars in social science and humanities fields are using geographic information systems (GIS) to help investigate spatial questions and map their findings. The nature of historical data and historiographic practices present several challenges in using GIS that have been addressed only partially to date. For…

Grossner, Karl Eric

2010-01-01

339

A new quality of geographical knowledge  

Microsoft Academic Search

This paper is concerned with the current tendencies of the advancement of science, primarily as regards integration and synthesis of knowledge of territorial organization. Within this context, the focus is on the principles of developing an understanding of partial systems, the advancement of research in the field of paleoreconstructions and geographical forecasting, novel techniques of landscape and atlas mapping, and

A. N. Antipov

2009-01-01

340

Secure Geographic Routing Protocols: Issues and Approaches  

E-print Network

In the years, routing protocols in wireless sensor networks (WSN) have been substantially investigated by researches. Most state-of-the-art surveys have focused on reviewing of wireless sensor network .In this paper we review the existing secure geographic routing protocols for wireless sensor network (WSN) and also provide a qualitative comparison of them.

sookhak, Mehdi; Haghparast, Mahboobeh; ISnin, Ismail Fauzi

2011-01-01

341

Geographic Information Systems: Implications for Problem Solving.  

ERIC Educational Resources Information Center

Compares expert-/novice-based problem-solving behaviors with a Geographic Information Systems program. Uses naturalistic methods to analyze problem-solving strategies for occurrence of thematic elements. Reports that experts relied on logical formulations to query the database while novices used trial-and-error methods and midlevel cognitive…

Audet, Richard H.; Abegg, Gerald L.

1996-01-01

342

Mobile Internet Application to Geographical Information Services  

Microsoft Academic Search

The nearly ubiquitous access to the internet and interactive content of the WWW has made people a powerful means to access, exchange, and process information. Geographic information\\/data is the most important and costliest part of GIS, and it could become quickly out of date and thus need to be constantly updated. With the rapid evolution of mobile communication technologies (3G,

Jusuo Zhou; Anliang Ning; Rui Deng; Fanshun Meng

2009-01-01

343

First Report of Cowpea Mild Mottle Carlavirus on Yardlong Bean (Vigna unguiculata subsp. sesquipedalis) in Venezuela  

PubMed Central

Yardlong bean (Vigna unguiculata subsp. sesquipedalis) plants with virus-like systemic mottling and leaf distortion were observed in both experimental and commercial fields in Aragua State, Venezuela. Symptomatic leaves were shown to contain carlavirus-like particles. RT-PCR analysis with carlavirus-specific primers was positive in all tested samples. Nucleotide sequences of the obtained amplicons showed 84%–74% similarity to corresponding sequences of Cowpea mild mottle virus (CPMMV) isolates deposited in the GenBank database. This is the first report of CPMMV in Venezuela and is thought to be the first report of CPMMV infecting yardlong bean. PMID:23242372

Brito, Miriam; Fernández-Rodríguez, Thaly; Garrido, Mario José; Mejías, Alexander; Romano, Mirtha; Marys, Edgloris

2012-01-01

344

First report of Cowpea mild mottle Carlavirus on yardlong bean (Vigna unguiculata subsp. sesquipedalis) in Venezuela.  

PubMed

Yardlong bean (Vigna unguiculata subsp. sesquipedalis) plants with virus-like systemic mottling and leaf distortion were observed in both experimental and commercial fields in Aragua State, Venezuela. Symptomatic leaves were shown to contain carlavirus-like particles. RT-PCR analysis with carlavirus-specific primers was positive in all tested samples. Nucleotide sequences of the obtained amplicons showed 84%-74% similarity to corresponding sequences of Cowpea mild mottle virus (CPMMV) isolates deposited in the GenBank database. This is the first report of CPMMV in Venezuela and is thought to be the first report of CPMMV infecting yardlong bean. PMID:23242372

Brito, Miriam; Fernández-Rodríguez, Thaly; Garrido, Mario José; Mejías, Alexander; Romano, Mirtha; Marys, Edgloris

2012-12-01

345

Wider sampling reveals a non-sister relationship for geographically contiguous lineages of a marine mussel  

PubMed Central

The accuracy of phylogenetic inference can be significantly improved by the addition of more taxa and by increasing the spatial coverage of sampling. In previous studies, the brown mussel Perna perna showed a sister–lineage relationship between eastern and western individuals contiguously distributed along the South African coastline. We used mitochondrial (COI) and nuclear (ITS) sequence data to further analyze phylogeographic patterns within P. perna. Significant expansion of the geographical coverage revealed an unexpected pattern. The western South African lineage shared the most recent common ancestor (MRCA) with specimens from Angola, Venezuela, and Namibia, whereas eastern South African specimens and Mozambique grouped together, indicating a non-sister relationship for the two South African lineages. Two plausible biogeographic scenarios to explain their origin were both supported by the hypotheses-testing analysis. One includes an Indo-Pacific origin for P. perna, dispersal into the Mediterranean and Atlantic through the Tethys seaway, followed by recent secondary contact after southward expansion of the western and eastern South African lineages. The other scenario (Out of South Africa) suggests an ancient vicariant divergence of the two lineages followed by their northward expansion. Nevertheless, the “Out of South Africa” hypothesis would require a more ancient divergence between the two lineages. Instead, our estimates indicated that they diverged very recently (310 kyr), providing a better support for an Indo-Pacific origin of the two South African lineages. The arrival of the MRCA of P. perna in Brazil was estimated at 10 [0–40] kyr. Thus, the hypothesis of a recent introduction in Brazil through hull fouling in wooden vessels involved in the transatlantic itineraries of the slave trade did not receive strong support, but given the range for this estimate, it could not be discarded. Wider geographic sampling of marine organisms shows that lineages with contiguous distributions need not share a common ancestry. PMID:25360249

Cunha, Regina L; Nicastro, Katy R; Costa, Joana; McQuaid, Christopher D; Serrão, Ester A; Zardi, Gerardo I

2014-01-01

346

New Neotropical Sebacinales Species from a Pakaraimaea dipterocarpacea Forest in the Guayana Region, Southern Venezuela: Structural Diversity and Phylogeography  

PubMed Central

Pakaraimaea dipterocarpacea, a member of the Dipterocarpaceae endemic in the Guayana region, is associated with a diverse community of ectomycorrhizal (ECM) fungi. Amongst the 41 ECM fungal species detected in a 400 m2 P. dipterocarpacea ssp. nitida plot in Southern Venezuela, three species belonged to the Sebacinales. We tested whether ECM anatomotype characterization can be used as a feasible element in an integrative taxonomy in this diverse fungal group, where the relevance of fruitbody morphology for species delimitation seems limited. Using a combination of ECM morpho-anatomical characterizations and phylogenetic analyses based on nuclear ITS and LSU sequences, we report three new species. The main distinguishing features of Sebacina guayanensis are the yellowish cell walls together with conspicuous undifferentiated, uniform compact (type B) rhizomorphs. Staghorn-like hyphae are characteristic of S. tomentosa. The combination of clusters of thick-walled emanating hyphae, including hyphae similar to awl-shaped cystidia with basal dichotomous or trichotomous ramifications, and the presence of type B rhizomorphs were characteristic of a third, yet unnamed species. The three species belong to three different, possibly specifically tropical clades in Sebacinales Group A. The geographic distribution of phylogenetically related strains was wide, including a Dicymbe forest in Guyana and an Ecuadorian rainforest with Coccoloba species. We show that ECM morpho-anatomy can be used, in combination with other analyses, to delineate species within Sebacinales Group A. In addition to phylogenetic information, type B rhizomorphs observed in different Sebacinales clades have important ecological implications for this fungal group. The phylogeography of Sebacinales suggests that dispersion and host jump are important radiation mechanisms that shaped P. dipterocarpacea ECM fungal community. This study emphasizes the need for more sequence data to evaluate the hypothesis that phylogeographic relationships between neo- and paleotropical ECM fungal species could be attributed to the vicariance of cross-continental hosts such as the Dipterocarpacae. PMID:25072467

Moyersoen, Bernard; Weiß, Michael

2014-01-01

347

New neotropical sebacinales species from a Pakaraimaea dipterocarpacea forest in the Guayana Region, Southern Venezuela: structural diversity and phylogeography.  

PubMed

Pakaraimaea dipterocarpacea, a member of the Dipterocarpaceae endemic in the Guayana region, is associated with a diverse community of ectomycorrhizal (ECM) fungi. Amongst the 41 ECM fungal species detected in a 400 m2 P. dipterocarpacea ssp. nitida plot in Southern Venezuela, three species belonged to the Sebacinales. We tested whether ECM anatomotype characterization can be used as a feasible element in an integrative taxonomy in this diverse fungal group, where the relevance of fruitbody morphology for species delimitation seems limited. Using a combination of ECM morpho-anatomical characterizations and phylogenetic analyses based on nuclear ITS and LSU sequences, we report three new species. The main distinguishing features of Sebacina guayanensis are the yellowish cell walls together with conspicuous undifferentiated, uniform compact (type B) rhizomorphs. Staghorn-like hyphae are characteristic of S. tomentosa. The combination of clusters of thick-walled emanating hyphae, including hyphae similar to awl-shaped cystidia with basal dichotomous or trichotomous ramifications, and the presence of type B rhizomorphs were characteristic of a third, yet unnamed species. The three species belong to three different, possibly specifically tropical clades in Sebacinales Group A. The geographic distribution of phylogenetically related strains was wide, including a Dicymbe forest in Guyana and an Ecuadorian rainforest with Coccoloba species. We show that ECM morpho-anatomy can be used, in combination with other analyses, to delineate species within Sebacinales Group A. In addition to phylogenetic information, type B rhizomorphs observed in different Sebacinales clades have important ecological implications for this fungal group. The phylogeography of Sebacinales suggests that dispersion and host jump are important radiation mechanisms that shaped P. dipterocarpacea ECM fungal community. This study emphasizes the need for more sequence data to evaluate the hypothesis that phylogeographic relationships between neo- and paleotropical ECM fungal species could be attributed to the vicariance of cross-continental hosts such as the Dipterocarpacae. PMID:25072467

Moyersoen, Bernard; Wei?, Michael

2014-01-01

348

Geographical Information Systems risk assessment models for zoonotic fascioliasis in the South American Andes region.  

PubMed

The WHO recognises Fasciola hepatica to be an important human health problem. The Andean countries of Peru, Bolivia and Chile are those most severely affected by this distomatosis, though areas of Ecuador, Colombia and Venezuela are also affected. As part of a multidisciplinary project, we present results of use of a Geographical Information Systems (GIS) forecast model to conduct an epidemiological analysis of human and animal fasciolosis in the central part of the Andes mountains. The GIS approach enabled us to develop a spatial and temporal epidemiological model to map the disease in the areas studied and to classify transmission risk into low, moderate and high risk areas so that areas requiring the implementation of control activities can be identified. Current results are available on a local scale for: (1) the northern Bolivian Altiplano, (2) Puno in the Peruvian Altiplano, (3) the Cajamarca and Mantaro Peruvian valleys, and (4) the Ecuadorian provinces of Azuay, Cotopaxi and Imbabura. Analysis of results demonstrated the validity of a forecast model that combines use of climatic data to calculate of forecast indices with remote sensing data, through the classification of Normalized Difference Vegetation Index (NDVI) maps. PMID:16044684

Fuentes, M V; Sainz-Elipe, S; Nieto, P; Malone, J B; Mas-Coma, S

2005-03-01

349

Differences in crop bacterial community structure between hoatzins from different geographical locations.  

PubMed

The hoatzin is the only known folivorous bird with foregut fermentation, and is distributed in Venezuela in rivers of the central savannas to the eastern Orinoco River. Differences in diet are expected to affect the digestive microbiota and we hypothesized that hoatzins from different habitats might have a different crop microbiota. We thus characterized the microbiota of six birds from the Cojedes and Orinoco Rivers using the G2 PhyloChip and, in parallel, we compared plant availability and foraging behavior of the hoatzins from the two locations. Plant composition differed between the 2 locations, which shared 5 out of 18 plant families and 1 plant genus--Coccoloba--that was highly consumed in both locations. The PhyloChip detected ?1600 phylotypes from 42 phyla. There was a core microbiota with ~50% of the OTUs shared by at least 4 of the 6 individuals, but there were also differences in the crop microbiota of animals from the two regions. There existed a higher relative abundance of Alphaproteobacteria and Actinobacteria in the crops of birds from the Cojedes River and of Clostridia and Deltaproteobacteria in the crops of birds from the Orinoco River. The results showed both a core crop microbiota and also the bacterial taxa responsible for geographical differences among individuals from the two locations with different vegetation, suggesting an effect of both diet and geography in shaping the crop bacterial community of the hoatzin. PMID:22313738

Godoy-Vitorino, Filipa; Leal, Sara J; Díaz, Wilmer A; Rosales, Judith; Goldfarb, Katherine C; García-Amado, María A; Michelangeli, Fabían; Brodie, Eoin L; Domínguez-Bello, María G

2012-04-01

350

Geographic exposure modeling: a valuable extension of geographic information systems for use in environmental epidemiology.  

PubMed Central

Geographic modeling of individual exposures using air pollution modeling techniques can help in both the design of environmental epidemiologic studies and in the assignment of measures that delineate regions that receive the highest exposure in space and time. Geographic modeling can help in the interpretation of environmental sampling data associated with airborne concentration or deposition, and can act as a sophisticated interpolator for such data, allowing values to be assigned to locations between points where the data have actually been collected. Recent advances allow for quantification of the uncertainty in a geographic model and the resulting impact on estimates of association, variability, and study power. In this paper we present the terminology and methodology of geographic modeling, describe applications to date in the field of epidemiology, and evaluate the potential of this relatively new tool. PMID:10229717

Beyea, J

1999-01-01

351

Ontology-driven geographic information systems  

NASA Astrophysics Data System (ADS)

Information integration is the combination of different types of information in a framework so that it can be queried, retrieved, and manipulated. Integration of geographic data has gained in importance because of the new possibilities arising from the interconnected world and the increasing availability of geographic information. Many times the need for information is so pressing that it does not matter if some details are lost, as long as integration is achieved. To integrate information across computerized information systems it is necessary first to have explicit formalizations of the mental concepts that people have about the real world. Furthermore, these concepts need to be grouped by communities in order to capture the basic agreements that exist within different communities. The explicit formalization of the mental models within a community is an ontology. This thesis introduces a framework for the integration of geographic information. We use ontologies as the foundation of this framework. By integrating ontologies that are linked to sources of geographic information we allow for the integration of geographic information based primarily on its meaning. Since the integration may occurs across different levels, we also create the basic mechanisms for enabling integration across different levels of detail. The use of an ontology, translated into an active, information-system component, leads Ontology-Driven Geographic Information Systems. The results of this thesis show that a model that incorporates hierarchies and roles has the potential to integrate more information than models that do not incorporate these concepts. We developed a methodology to evaluate the influence of the use of roles and of hierarchical structures for representing ontologies on the potential for information integration. The use of a hierarchical structure increases the potential for information integration. The use of roles also improves the potential for information integration, although to a much lesser extent than did the use of hierarchies. The combined effect of roles and hierarchies had a more positive effect in the potential for information integration than the use of roles alone or hierarchies alone. These three combinations (hierarchies, roles, roles and hiearchies) gave better results than the results using neither roles nor hierarchies.

Fonseca, Frederico Torres

352

Seismic microzoning projects and their implementation in Venezuela  

NASA Astrophysics Data System (ADS)

Site effects have been recognized to play an important role in damage distribution of destructive earthquakes. These effects have been observed in Venezuela especially during the 1967 Caracas earthquake, when 4 buildings with 10 and more storeys during the Caracas 1967 earthquake collapsed, and a big number of them in the same deep sediment area have been seriously damaged. This motivated the development of studies regarding the subsurface configuration of Caracas and Barquisimeto during the last decade, with a seismic microzoning project realized in both cities from 2005 to 2009. The main results of this project were the development of design response spectra for the different microzones within the sedimentary basin, as well as estimates of landslide hazard. Implementation of the results in municipality ordinances is actually discussed with local authorities. They are aimed to address mitigation for new constructions by the application of the specific design spectra, for existing buildings via evaluation and retrofitting strategies, and for slope areas (informal, as well as formal developments) due to the identification of areas that may not be developed or require detailed studies of slope stabilities. Since then, seismic microzoning studies were started in Cumaná, Guarenas/Guatire and Lara state, and within a broader context of integrated risk management, which includes flooding, landslide and technological risks, in Mérida, Valencia, Maracay, Barcelona/Puerto La Cruz and Valle de la Pascua. The projects are coordinated by the Venezuelan Foundation for Seismological Research (FUNVISIS) in cooperation with local universities. Efforts are done to unable local researchers to apply the methodologies in other cities as Valera, Trujillo, Boconó, San Cristóbal and Tucacas. A unified seismic hazard map as input motion to these studies is actually in development. Depending on the local characteristics, building inventory and vulnerability analysis are done for risk analysis. Further members of the "Grupo de trabajo: Investigaciones aplicadas a la gestion integral del riesgo en espacios urbanos" are: Oscar Andrés López, Milgreya Cerrada, Rafael Torres, Oscar Ramírez, Elieser Sanzonetti, José Heredia, Jaime Avendaño, Fernando Mazuera, Luis Molina, Alexi Suárez, Víctor Rocabado, Mónica Paolini, Luis Yegres, Leonardo Alvarado, Herbert Rendón, Luz Rodríguez, Jorge González.

Schmitz, M.; Cano, V.; Olbrich, F.; Vallee, M.; Morales, C.; Arreaza, A.; Mendes, K.; Klarica, S.; Alvarez Gomez, J.; Aray, J.; Vielma, J.; Pombo, A.; Diaz, J.; Grupo de trabajo

2013-05-01

353

Holocene evolution of the western Orinoco Delta, Venezuela  

USGS Publications Warehouse

The pristine nature of the Orinoco Delta of eastern Venezuela provides unique opportunities to study the geologic processes and environments of a major tropical delta. Remote-sensing images, shallow cores, and radiocarbon-dating of organic remains form the basis for describing deltaic environments and interpreting the Holocene history of the delta. The Orinoco Delta can be subdivided into two major sectors. The southeast sector is dominated by the Rio Grande-the principal distributary-and complex networks of anastomosing fluvial and tidal channels. The abundance of siliciclastic deposits suggests that fluvial processes such as over-bank flooding strongly influence this part of the delta. In contrast, the northwest sector is represented by few major distributaries, and overbank sedimentation is less widespread relative to the southeast sector. Peat is abundant and occurs in herbaceous and forested swamps that are individually up to 200 km2 in area. Northwest-directed littoral currents transport large volumes of suspended sediment and produce prominent mudcapes along the northwest coast. Mapping of surface sediments, vegetation, and major landforms identified four principal geomorphic systems within the western delta plain: (1) distributary channels, (2) interdistributary flood basins, (3) fluvial-marine transitional environments, and (4) marine-influenced coastal environments. Coring and radiocarbon dating of deltaic deposits show that the northern delta shoreline has prograded 20-30 km during the late Holocene sea-level highstand. Progradation has been accomplished by a combination of distributary avulsion and mudcape progradation. This style of deltaic progradation differs markedly from other deltas such as the Mississippi where distributary avulsion leads to coastal land loss, rather than shoreline progradation. The key difference is that the Orinoco Delta coastal zone receives prodigious amounts of sediment from northwest-moving littoral currents that transport sediment from as far away as the Amazon system (???1600 km). Late Holocene progradation of the delta has decreased delta-plain gradients, increased water levels, and minimized over-bank flooding and siliciclastic sedimentation in the northwest sector. These conditions, coupled with large amounts of direct precipitation, have led to widespread peat accumulation in interdistributary basins. Because peat-forming environments cover up to 5000 km2 of the delta plain, the Orinoco may be an excellent analogue for interpreting ancient deltaic peat deposits.

Aslan, A.; White, W.A.; Warne, A.G.; Guevara, E.H.

2003-01-01

354

Ethics and geographical equity in health care  

PubMed Central

Important variations in access to health care and health outcomes are associated with geography, giving rise to profound ethical concerns. This paper discusses the consequences of such concerns for the allocation of health care finance to geographical regions. Specifically, it examines the ethical drivers underlying capitation systems, which have become the principal method of allocating health care finance to regions in most countries. Although most capitation systems are based on empirical models of health care expenditure, there is much debate about which needs factors to include in (or exclude from) such models. This concern with legitimate and illegitimate drivers of health care expenditure reflects the ethical concerns underlying the geographical distribution of health care finance. Key Words: Health economics • resource allocation • ethics of regional health care finance • capitation systems PMID:11479357

Rice, N.; Smith, P.

2001-01-01

355

USGS Geographic Analysis and Monitoring Program  

NSDL National Science Digital Library

Located within the United States Geological Survey (USGS), the Geographic Analysis and Monitoring Program (GAM) conducts various geographic assessments around the United States with an eye towards fostering a greater understanding of the causes and consequences of natural and human-induced processes that shape the landscape over time. Currently, GAM is engaged in dozens of projects, and this website provides summary information about the focus of each specialized endeavor. Visitors can begin their search by looking at an interactive map of the US. By clicking on each state, visitors can learn about the ongoing work in each locale. Additionally, visitors can also browse the current studies by theme, such as fire science, human health, environmental hazards, and topographic science. For persons looking for studies with a broader directive, the site also lists national and international studies, such as those looking at Lyme disease and the status and trends of the nation's transportation network.

356

Geographical and taxonomic biases in invasion ecology.  

PubMed

Invasive alien species come from most taxonomic groups, and invasion biology is searching for robust cross-taxon generalizations and principles. An analysis of 2,670 papers dealing with 892 invasive species showed that all major groups of invaders are well studied, but that most information on the mechanisms of invasion has emerged from work on a limited number of the most harmful invaders. A strong geographical bias, with Africa and Asia understudied, inhibits a balanced understanding of invasion, because we might be lacking knowledge of specific invasion mechanisms from poorly studied, regionally specific habitats. International cooperation is required to achieve a more geographically balanced picture of biological invasions. Invasive species with the greatest impact are best studied, but more studies of species that are naturalized but not (yet) invasive are needed to improve understanding of the mechanisms acting during the naturalization phase of invasions and leading to successful invasion. PMID:18367291

Pysek, Petr; Richardson, David M; Pergl, Jan; Jarosík, Vojtech; Sixtová, Zuzana; Weber, Ewald

2008-05-01

357

Five Years of Cyclotron Radioisotope Production Experiences at the First PET-CT in Venezuela  

SciTech Connect

Five years operation of a compact cyclotron installed at PET-CT facility in Caracas, Venezuela is given. Production rate of {sup 18}F labeled FDG, operation and radiation monitoring experience are included. We conclude that {sup 18}FDG CT-PET is the most effective technique for patient diagnosis.

Colmenter, L.; Coelho, D.; Esteves, L. M.; Ruiz, N.; Morales, L.; Lugo, I. [Centro Diagnostico Docente, Las Mercedes, Caracas (Venezuela); Sajo-Bohus, L.; Liendo, J. A.; Greaves, E. D.; Barros, H. [Universidad Simon Bolivar, Seccion de Fisica Nuclear, Caracas (Venezuela); Castillo, J. [University of Applied Science of Aachen (Germany)

2007-10-26

358

Five Years of Cyclotron Radioisotope Production Experiences at the First PET-CT in Venezuela  

NASA Astrophysics Data System (ADS)

Five years operation of a compact cyclotron installed at PET-CT facility in Caracas, Venezuela is given. Production rate of 18F labeled FDG, operation and radiation monitoring experience are included. We conclude that 18FDG CT-PET is the most effective technique for patient diagnosis.

Colmenter, L.; Sajo-Bohus, L.; Liendo, J. A.; Greaves, E. D.; Coelho, D.; Barros, H.; Castillo, J.; Esteves, L. M.; Ruiz, N.; Morales, L.; Lugo, I.

2007-10-01

359

Five Years of Cyclotron Radioisotope Production Experiences at the First PET-CT in Venezuela  

Microsoft Academic Search

Five years operation of a compact cyclotron installed at PET-CT facility in Caracas, Venezuela is given. Production rate of 18F labeled FDG, operation and radiation monitoring experience are included. We conclude that 18FDG CT-PET is the most effective technique for patient diagnosis.

L. Colmenter; L. Sajo-Bohus; J. A. Liendo; E. D. Greaves; D. Coelho; H. Barros; J. Castillo; L. M. Esteves; N. Ruiz; L. Morales; I. Lugo

2007-01-01

360

SUPPLEMENTATION PRACTICES OF BEEF HEIFERS IN THE CENTRAL PLAINS OF VENEZUELA  

Microsoft Academic Search

To evaluate supplementation practices of beef heifers under grazing conditions an experiment was carried out in the central plains of Venezuela, corresponding to the dry tropical forest ecological system. Brahman heifers (n= 166) and their crossbred types with native cattle, with body weight average (BW) of 219±15.6 kg were assigned by BW, reproductive condition and racial predominance to three treatments

L. Depablos; J. Ordoñez; S. Godoy; C. F. Chicco

2008-01-01

361

NATURAL RODENT HOST ASSOCIATIONS OF GUANARITO AND PIRITAL VIRUSES (FAMILY ARENAVIRIDAE) IN CENTRAL VENEZUELA  

Microsoft Academic Search

The objective of this study was to elucidate the natural rodent host relationships of Guanarito and Pirital viruses (family Arenaviridae) in the plains of central Venezuela. Ninety-two arenavirus isolates from 607 animals, representing 10 different rodent species, were characterized to the level of serotype. The 92 isolates comprised 19 Guanarito virus strains and 73 Pirital virus strains. The 19 Guanarito

CHARLES F. FULHORST; MICHAEL D. BOWEN; ROSA ALBA SALAS; GLORIA DUNO; ANTONIO UTRERA; THOMAS G. KSIAZEK; NURIS M. C. DE MANZIONE; EDITH DE MILLER; CLOVIS VASQUEZ; CLARENCE J. PETERS; ROBERT B. TESH

1999-01-01

362

ECOLOGICAL STUDIES OF ENZOOTIC VENEZUELAN EQUINE ENCEPHALITIS IN NORTH-CENTRAL VENEZUELA 1997–1998  

Microsoft Academic Search

Abstract. From 1997–1998, we investigated the possible continuous circulation of epizootic Venezuelan equine encephalitis (VEE) virus suggested by a 1983 subtype IC interepizootic mosquito isolate made in Panaquire, Miranda State, Venezuela. The study area was originally covered by lowland tropical rainforest but has been converted into cacao plantations. Sentinel hamsters, small mammal trapping, mosquito collections, and human serosurveys were used

Rosa Alba Salas; Carmen Z. Garcia; Jonathan Liria; Roberto Barrera; Juan Carlos Navarro; Gladys Medina; Clovis Vasquez; Zoraida Fernandez; Scott C. Weaver

363

Actividad microbiana en suelos de sabanas de los Llanos Orientales de Venezuela convertidas en pasturas  

Microsoft Academic Search

Micr obial activity in Eastern Venezuelan savannas turned into grasslands. We studied the effects of season and management practices on chemical properties and biochemical parameters in a typical Ultisol soil of native and introduced pastures of the Eastern savannas of Venezuela. Sseason, soil management, and their interaction, significantly affected chemical properties and biochemical parameters. The total carbon and the water

Y. Gómez; J. Paolini

2006-01-01

364

Counter-Hegemonic Regionalism and Higher Education for All: Venezuela and the ALBA  

ERIC Educational Resources Information Center

This paper employs new regionalism theory and regulatory regionalism theory in its analysis and theorisation of the Bolivarian Alliance for the Peoples of Our America (ALBA) as a counter-hegemonic Latin American and Caribbean (LAC) regionalism. As (initially) the regionalisation of Venezuela's Bolivarian Revolution, ALBA is centred around the idea…

Muhr, Thomas

2010-01-01

365

78 FR 60846 - Silicomanganese From India, Kazakhstan, and Venezuela: Continuation of Antidumping Duty Orders  

Federal Register 2010, 2011, 2012, 2013, 2014

As a result of the determinations by the Department of Commerce (the ``Department'') and the International Trade Commission (the ``ITC'') that revocation of the antidumping duty orders on silicomanganese from India, Kazakhstan, and Venezuela would likely lead to a continuation or recurrence of dumping and material injury to an industry in the United States, the Department is publishing a notice......

2013-10-02

366

78 FR 9034 - Silicomanganese From India, Kazakhstan, and Venezuela: Final Results of the Expedited Second...  

Federal Register 2010, 2011, 2012, 2013, 2014

On October 1, 2012, the Department of Commerce (``Department'') initiated the second sunset reviews of the antidumping duty orders on silicomanganese from India, Kazakhstan, and Venezuela. The Department finds that revocation of these antidumping duty orders would be likely to lead to continuation or recurrence of dumping at the rates identified in the ``Final Results of Reviews'' section of this......

2013-02-07

367

The Effect of Wage Compression and Alternative Labor Market Opportunities on Teacher Quality in Venezuela  

ERIC Educational Resources Information Center

This paper examines the effect of teacher relative wages and teacher wage dispersion on high school graduates' preferences for teaching majors in College. This approximation to teacher quality is appropriate in a country like Venezuela as opposed to the US since the rigidity of the tertiary school system significantly limits mobility between…

Ortega, Daniel E.

2010-01-01

368

Identification and Type Distribution of Astroviruses among Children with Gastroenteritis in Colombia and Venezuela  

PubMed Central

Astrovirus infections were detected by enzyme immunoassay in 12 (5%) of 251 stool samples from children with gastroenteritis from Bogota, Colombia. In addition, astroviruses were detected by reverse transcription-PCR in 3 (10%) of 29 stool samples negative for other enteric pathogens collected in Caracas, Venezuela, from children with gastroenteritis. Astrovirus type 1 was the most frequently detected virus. PMID:10970410

Medina, Sandra M.; Gutierrez, María F.; Liprandi, Ferdinando; Ludert, Juan E.

2000-01-01

369

Lobomycosis in Man and Lobomycosis-like Disease in Bottlenose Dolphin, Venezuela  

PubMed Central

We report 1 case of lobomycosis caused by Lacazia loboi in a fisherman and 1 case of lobomycosis-like disease in a bottlenose dolphin (Tursiops truncatus) along the coast of Venezuela. These findings suggest that the marine environment is a likely habitat for L. loboi and a reservoir for infection. PMID:19751598

Bermudez, Luis; Van Bressem, Marie-Françoise; Reyes-Jaimes, Oscar; Sayegh, Alejandro J.

2009-01-01

370

Teachers' Perceived Efficacy among English as a Foreign Language Teachers in Middle Schools in Venezuela  

ERIC Educational Resources Information Center

Teachers' sense of efficacy has been shown to influence teachers' actions and student outcomes. This study explored self-efficacy beliefs among English as a Foreign Language teachers in selected schools in Venezuela. Data were collected through a survey administered to 100 teachers. The Teacher Sense of Efficacy Scale (Tschannen-Moran & Woolfolk…

Chacon, C.T.

2005-01-01

371

Comprehensive Education Bolivarian-Style: The Alternative School in Barrio Pueblo Nuevo, Venezuela  

ERIC Educational Resources Information Center

In this article, the author traces revolutionary developments in an alternative school in Barrio Pueblo Nuevo, Mérida, in the Bolivarian Republic of Venezuela, a school that caters for students between 4 and 14. He begins by recounting some fieldwork done at the school on his behalf by Edward Ellis in 2010. He goes on to discuss a video made at…

Cole, Mike

2014-01-01

372

Seasonal and interannual dynamics in diatom production in the Cariaco Basin, Venezuela  

NASA Astrophysics Data System (ADS)

We examine the diatom flux collected between November 1996 and April 1998, and between January and October 1999 at the time series study site in the Cariaco Basin, off Venezuela. The temporal dynamics of the total diatom flux mainly reflect seasonal, trade wind-driven changes in surface hydrographic conditions, including changes associated with the El Ni

Romero, O. E.; Thunell, R. C.; Astor, Y.; Varela, R.

2009-04-01

373

Bacteriosis en Cilantro (Coriandrum sativum L.) Causada por Xanthomonas campestris (Pammel) Dowson en Venezuela  

Microsoft Academic Search

In coriander (Coriandrum sativum) plants from commercial fields in the area of San Vicente, Aragua state, Venezuela, water-soaked, dark-brown angular spots were observed on leaf surface and distributed along the veins; as symptoms progressed, they caused leaf blight. Isolates obtained from diseased tissue on nutrient agar persistently produced light yellow colonies. Pathogenicity tests were performed by spray inoculation of a

Yolanda Guevara; Anna Maselli

374

Rural Development in Venezuela and the Guianas: A Bibliography. Training and Methods Series Number 20.  

ERIC Educational Resources Information Center

The bibliography cites 930 materials dealing with Venezuela and the Guianas. Published between 1949 and 1972, the materials are found in the Land Tenure Center Library at the University of Wisconsin. Topics covered are: agriculture, agrarian reform, economic affairs, economic cooperation, human resources, American Indians, industry, law, money,…

Anderson, Teresa, Comp.; And Others

375

Chagas disease control in Venezuela: lessons for the Andean region and beyond  

Microsoft Academic Search

Following the success of the Southern Cone programme to control Chagas disease, Andean countries are beginning to implement a similar international initiative. Important lessons could be learnt from Venezuela, which has one of the longest running national control programmes in Latin America, but has received little attention in the scientific literature. Retrospective analysis of age-specific Trypanosoma cruzi seroprevalence data and

Maria Dora Feliciangeli; Diarmid Campbell-Lendrum; Cinda Martinez; Dar??o Gonzalez; Paul Coleman; Clive Davies

2003-01-01

376

Democracia y Derechos Humanos en la Globalización. Una Aproximación a Venezuela  

Microsoft Academic Search

We intend to address the current debate about the positive effects of the globalization process in democracy, and specifically on human rights, firstly by a collision and valuation theoretical and academic, then analyzing the Venezuelan reality, in which the progress and progressiveness of human rights in terms of the Bolivarian Constitution of Venezuela in 1999 does not correspond with the

José Antonio Rivas

377

Accelerated Publications Three-Dimensional Structure of DesVI from Streptomyces Venezuelae: A Sugar  

E-print Network

Accelerated Publications Three-Dimensional Structure of DesVI from Streptomyces Venezuelae: A Sugar,4,6-trideoxyglucose, is an unusual sugar found on the macrolide antibiotic erythromycin, and it has been shown to play, has been modeled into the active site. This model places the C-6 methyl group of the sugar

Holden, Hazel

378

The Peasantry as an Emerging Political Factor in Mexico, Bolivia, and Venezuela.  

ERIC Educational Resources Information Center

This study examines the potential role of the peasantry in the determination of political power in Latin America. Case studies of Mexico, Bolivia, and Venezuela illustrate that the framework of political change is of major importance because it is crucial in determining the properties of the political system to follow. The previous involvement of…

Lord, Peter P.

379

Early Sexual Maturity Among Pume Foragers of Venezuela: Fitness Implications of Teen Motherhood  

E-print Network

biology literature on teen pregnancy, objectives are to first to describe these patterns and then discussEarly Sexual Maturity Among Pume´ Foragers of Venezuela: Fitness Implications of Teen Motherhood their late teens. Am J Phys Anthropol 136:338­350, 2008. VVC 2008 Wiley-Liss, Inc. Age at first birth is tied

Kramer, Karen L.

380

Application of sustainable development concepts to an alluvial mineral extraction project in Lower Caroni River, Venezuela  

Microsoft Academic Search

The Caroni River, a tributary of the Orinoco River in the State of Bolivar, Venezuela, has been subjected to mining since the end of the last century. Until the 1990s, hundreds of artisanal miners operated along a 70km stretch of the river using rudimentary suction dredges to extract gold and diamonds from sediments. Although artisanal miners created considerable wealth along

Maria Claudia Sandoval; Marcello M. Veiga; Jennifer Hinton; Stanley Sandner

2006-01-01

381

Analysis of avian communities in Lake Guri, Venezuela, using multiple assembly rule models  

Microsoft Academic Search

This study analyzed the distribution of resident, forest-interior bird species nesting on islands in Lake Guri, Venezuela using several different community assembly rule models. The models that were tested included Diamond's Assembly Rules, Size Structure, Guild Proportionality, Favored States, and Nestedness. It was determined that the species composition of the study communities was only weakly influenced by competition, but that

Kenneth Feeley

2003-01-01

382

A Gene Cluster for Macrolide Antibiotic Biosynthesis in Streptomyces venezuelae: Architecture of Metabolic Diversity  

Microsoft Academic Search

In a survey of microbial systems capable of generating unusual metabolite structural variability, Streptomyces venezuelae ATCC 15439 is notable in its ability to produce two distinct groups of macrolide antibiotics. Methymycin and neomethymycin are derived from the 12-membered ring macrolactone 10-deoxymethynolide, whereas narbomycin and pikromycin are derived from the 14-membered ring macrolactone, narbonolide. This report describes the cloning and characterization

Yongquan Xue; Lishan Zhao; Hung-Wen Liu; David H. Sherman

1998-01-01

383

NATURAL HAZARDS ON ALLUVIAL FANS: THE VENEZUELA DEBRIS FLOW AND FLASH FLOOD DISASTER  

E-print Network

NATURAL HAZARDS ON ALLUVIAL FANS: THE VENEZUELA DEBRIS FLOW AND FLASH FLOOD DISASTER In December fans inundated coastal communities, caused severe property destruction, and resulted in a death toll that rise abruptly from the Caribbean Sea, the alluvial fans are the only areas where slopes are not too

Eaton, L. Scott

384

47 CFR 27.15 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2013 CFR

... false Geographic partitioning and spectrum disaggregation. 27.15 Section...27.15 Geographic partitioning and spectrum disaggregation. (a) Eligibility...service area or disaggregate their licensed spectrum at any time following the grant of...

2013-10-01

385

47 CFR 27.15 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2010 CFR

... false Geographic partitioning and spectrum disaggregation. 27.15 Section...27.15 Geographic partitioning and spectrum disaggregation. (a) Eligibility...service area or disaggregate their licensed spectrum at any time following the grant of...

2010-10-01

386

47 CFR 27.15 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2011 CFR

... false Geographic partitioning and spectrum disaggregation. 27.15 Section...27.15 Geographic partitioning and spectrum disaggregation. (a) Eligibility...service area or disaggregate their licensed spectrum at any time following the grant of...

2011-10-01

387

47 CFR 27.15 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2014 CFR

... false Geographic partitioning and spectrum disaggregation. 27.15 Section...27.15 Geographic partitioning and spectrum disaggregation. Link to an amendment...service area or disaggregate their licensed spectrum at any time following the grant of...

2014-10-01

388

47 CFR 27.15 - Geographic partitioning and spectrum disaggregation.  

Code of Federal Regulations, 2012 CFR

... false Geographic partitioning and spectrum disaggregation. 27.15 Section...27.15 Geographic partitioning and spectrum disaggregation. (a) Eligibility...service area or disaggregate their licensed spectrum at any time following the grant of...

2012-10-01

389

SHORT COMMUNICATION Geographically variable selection in Ambystoma tigrinum virus  

E-print Network

SHORT COMMUNICATION Geographically variable selection in Ambystoma tigrinum virus (Iridoviridae: Ambystoma tigrinum virus; caspase activation and recruitment domain; coevolution; eIF-2a; Iridoviridae selection in Ambystoma tigrinum virus (ATV) which causes frequent and geographically widespread epizootics

Storfer, Andrew

390

Geographic dispersion in teams : its history, experience, measurement, and change  

E-print Network

This thesis begins with the simple argument that geographic dispersion has gone surprisingly unexamined despite its role as the domain-defining construct for geographically dispersed teams (a.k.a. "virtual teams"). The ...

O'Leary, Michael Boyer, 1969-

2002-01-01

391

Geographic potential for outbreaks of Marburg hemorrhagic fever  

E-print Network

Marburg virus represents one of the least well-known of the hemorrhagic fever-causing viruses worldwide; in particular, its geographic potential in Africa remains quite mysterious. Ecologic niche modeling was used to explore the geographic...

Peterson, A. Townsend; Lash, R. Ryan; Carroll, Darin S.; Johnson, Karl M.

2006-01-01

392

Using Geographic Patterns to Discover Environmental Carcinogens  

Cancer.gov

Dr. Brian Henderson of the University of Southern California moderates a session on opportunities for global health epidemiologic research. Dr. William Blot of the International Epidemiology Institute and Vanderbilt University speaks about using geographic patterns to discover environmental carcinogens. These presentations were part of Cancer Epidemiology: From Pedigrees to Populations, a scientific symposium honoring 50 years of visionary leadership by Dr. Joseph F. Fraumeni, Jr., hosted by NCI’s Division of Cancer Epidemiology and Genetics (DCEG).

393

Geographic Analysis of the Radiation Oncology Workforce  

SciTech Connect

Purpose: To evaluate trends in the geographic distribution of the radiation oncology (RO) workforce. Methods and Materials: We used the 1995 and 2007 versions of the Area Resource File to map the ratio of RO to the population aged 65 years or older (ROR) within different health service areas (HSA) within the United States. We used regression analysis to find associations between population variables and 2007 ROR. We calculated Gini coefficients for ROR to assess the evenness of RO distribution and compared that with primary care physicians and total physicians. Results: There was a 24% increase in the RO workforce from 1995 to 2007. The overall growth in the RO workforce was less than that of primary care or the overall physician workforce. The mean ROR among HSAs increased by more than one radiation oncologist per 100,000 people aged 65 years or older, from 5.08 per 100,000 to 6.16 per 100,000. However, there remained consistent geographic variability concerning RO distribution, specifically affecting the non-metropolitan HSAs. Regression analysis found higher ROR in HSAs that possessed higher education (p = 0.001), higher income (p < 0.001), lower unemployment rates (p < 0.001), and higher minority population (p = 0.022). Gini coefficients showed RO distribution less even than for both primary care physicians and total physicians (0.326 compared with 0.196 and 0.292, respectively). Conclusions: Despite a modest growth in the RO workforce, there exists persistent geographic maldistribution of radiation oncologists allocated along socioeconomic and racial lines. To solve problems surrounding the RO workforce, issues concerning both gross numbers and geographic distribution must be addressed.

Aneja, Sanjay [Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT (United States); Cancer Outcomes, Policy, and Effectiveness Research Center at Yale, New Haven, CT (United States); Smith, Benjamin D. [University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Gross, Cary P. [Cancer Outcomes, Policy, and Effectiveness Research Center at Yale, New Haven, CT (United States); Department of General Internal Medicine, Yale University School of Medicine, New Haven, CT (United States); Wilson, Lynn D. [Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT (United States); Haffty, Bruce G. [Cancer Institute of New Jersey, New Brunswick, NJ (United States); Roberts, Kenneth [Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT (United States); Yu, James B., E-mail: james.b.yu@yale.edu [Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT (United States); Cancer Outcomes, Policy, and Effectiveness Research Center at Yale, New Haven, CT (United States)

2012-04-01

394

U-PLANT GEOGRAPHIC ZONE CLEANUP PROTOTYPE  

SciTech Connect

The U Plant geographic zone (UPZ) occupies 0.83 square kilometers on the Hanford Site Central Plateau (200 Area). It encompasses the U Plant canyon (221-U Facility), ancillary facilities that supported the canyon, soil waste sites, and underground pipelines. The UPZ cleanup initiative coordinates the cleanup of the major facilities, ancillary facilities, waste sites, and contaminated pipelines (collectively identified as ''cleanup items'') within the geographic zone. The UPZ was selected as a geographic cleanup zone prototype for resolving regulatory, technical, and stakeholder issues and demonstrating cleanup methods for several reasons: most of the area is inactive, sufficient characterization information is available to support decisions, cleanup of the high-risk waste sites will help protect the groundwater, and the zone contains a representative cross-section of the types of cleanup actions that will be required in other geographic zones. The UPZ cleanup demonstrates the first of 22 integrated zone cleanup actions on the Hanford Site Central Plateau to address threats to groundwater, the environment, and human health. The UPZ contains more than 100 individual cleanup items. Cleanup actions in the zone will be undertaken using multiple regulatory processes and decision documents. Cleanup actions will include building demolition, waste site and pipeline excavation, and the construction of multiple, large engineered barriers. In some cases, different cleanup actions may be taken at item locations that are immediately adjacent to each other. The cleanup planning and field activities for each cleanup item must be undertaken in a coordinated and cohesive manner to ensure effective execution of the UPZ cleanup initiative. The UPZ zone cleanup implementation plan (ZCIP) was developed to address the need for a fundamental integration tool for UPZ cleanup. As UPZ cleanup planning and implementation moves forward, the ZCIP is intended to be a living document that will provide a focal point for integrating UPZ actions, including field cleanup activities, waste staging and handling, and post-cleanup monitoring and institutional controls.

ROMINE, L.D.

2006-02-01

395

Geographical assemblages of European raptors and owls  

NASA Astrophysics Data System (ADS)

In this work we look for geographical structure patterns in European raptors (Order: Falconiformes) and owls (Order: Strigiformes). For this purpose we have conducted our research using freely available tools such as statistical software and databases. To perform the study, presence-absence data for the European raptors and owl species (Class Aves) were downloaded from the BirdLife International website. Using the freely available "pvclust" R-package, we applied similarity Jaccard index and cluster analysis in order to delineate biogeographical relationships for European countries. According to the cluster of similarity, we found that Europe is structured into two main geographical assemblages. The larger length branch separated two main groups: one containing Iceland, Greenland and the countries of central, northern and northwestern Europe, and the other group including the countries of eastern, southern and southwestern Europe. Both groups are divided into two main subgroups. According to our results, the European raptors and owls could be considered structured into four meta-communities well delimited by suture zones defined by Remington (1968) [Remington, C.L., 1968. Suture-zones of hybrid interaction between recently joined biotas. Evol. Biol. 2, 321-428]. Climatic oscillations during the Quaternary Ice Ages could explain at least in part the modern geographical distribution of the group.

López-López, Pascual; Benavent-Corai, José; García-Ripollés, Clara

2008-09-01

396

Neotropical genera of Naucoridae (Hemiptera: Heteroptera: Nepomorpha): new species of Placomerus and Procryphocricos from Guyana and Venezuela.  

PubMed

The Neotropical fauna of saucer bugs (Naucoridae) currently includes four monotypic genera. Recent extensive collecting in Venezuela has produced three new species in two of these genera. In addition, undetermined Guyanan specimens of one of the new species were found in the United States National Museum of Natural History. Thus, described here are Placomerus obscuratus n. sp. from Guyana and Venezuela with brachypterous and macropterous hindwing forms, and two species of Procryphocricos from Venezuela. Procryphocricos quiu n. sp. is described from the brachypterous forewing form and Procryphocricos macoita n. sp. from both brachypterous and macropterous forms. Previously described species also are discussed. PMID:24869509

Sites, Robert W; Camacho, Jesús

2014-01-01

397

Geographical Indication for New England Wines in NSW  

Microsoft Academic Search

Geographical Indications (GIs) have increasingly been used as a marketing tool to create an image of quality and uniqueness, and so capture premium prices. Hedonic pricing studies have shown that indication of geographical origin of production (e.g. country, region, wineries, and location), can affect prices. However, Geographical Indications only work when they are backed up by quality products. The objectives

Gene Campbell; Christie Chang; Peter Sniekers

398

Design and Implementation of a Geographic Search Engine  

Microsoft Academic Search

In this paper, we describe the design and initial implementation of a geographic search engine prototype for Germany, based on a large crawl of the de domain. Geographic search engines provide a flex- ible interface to the Web that allows users to constrain and order search results in an intuitive manner, by focusing a query on a par- ticular geographic

Alexander Markowetz; Yen-yu Chen; Torsten Suel; Xiaohui Long; Bernhard Seeger

2005-01-01

399

Identifying Geographical Processes from Time-stamped Data  

E-print Network

Identifying Geographical Processes from Time-stamped Data Claudio Campelo, Brandon Bennett and at different times, which causes difficulties for humans to identify them. The conceptualisation of geographical features and their correlation with geographical phenomena may provide a hu- man like approach

Bennett, Brandon

400

How to register geographical indications in the European Community  

Microsoft Academic Search

Geographical indications (GIs) are names associated with quality products coming from specific places when the geographical origin of the products gives them specific qualities, characteristics and reputation. Geographical indications are known to be the earliest type of trademarks. Historically, they have existed as long as, if not longer than, trademarks. GIs are intended to highlight special qualities of the products

Irina Kireeva

2011-01-01

401

Mobile Geographic Information Services Challenges in Pervasive Computing Environment  

Microsoft Academic Search

Mobile Geographic Information Service concept and the necessaries to begin related research are proposed firstly. Then the discussion about the innovational research challenges of Mobile Geographic Information Services in pervasive computing environment are introduced, including Ubiquitous Positioning technologies, context modeling and adapting, next-generation GIS. The need and importance of many GIScience research topics see new challenges with Mobile Geographic Information

Lei Ye; Yushan Duan; Aishe Shui; Yuanfei Wang

2007-01-01

402

A technical insight into community Geographic Information Systems for smartphones  

Microsoft Academic Search

Geographic Information Systems (GIS) provide inventory, analysis and visualization of geographic data to users of various levels. Users range from GIS experts who build models to analyze geographic patterns in data to general users such as travelers who need information on interesting places to visit and paths to follow. Popularity of social networks and ubiquitous use of hand held devices

Dileepa Jayathilake; Shamila Perera; Sameera Bandara; Helani Wanniarachchi; Lakshitha Herath

2011-01-01

403

Experimental Evaluation for IPv6 over VANET Geographic routing  

E-print Network

Experimental Evaluation for IPv6 over VANET Geographic routing Manabu Tsukada INRIA Paris). Geographic routing in vehicular ad hoc network (VANET) is becoming an inter- esting topic to deliver safety the AnaVANET evaluation tool to perform the evaluation taking into account all of geographic factors

Paris-Sud XI, Université de

404

Geographic Mobility and Student Achievement in an Urban Setting.  

ERIC Educational Resources Information Center

The impact of geographic instability on achievement by 41,735 elementary, middle, and secondary school students in Denver (Colorado) Public Schools was assessed. Results indicate an almost uniformly negative impact of geographic mobility on student achievement; the most negative effects of geographic mobility were found at earlier grade levels.…

Ingersoll, Gary M.; And Others

1989-01-01

405

Geographical Inquiry in Australian Schools: A Retrospective Analysis  

ERIC Educational Resources Information Center

This paper explores the occurrence of geographical inquiry in the Australian curriculum since Geography became a high school subject in 1911. In this historical overview, I reflect upon my own experiences of undertaking geographical inquiry during the 1970s and 1980s. Primary school geographical inquiry experiences can be virtually non-existent…

Kidman, Gillian

2012-01-01

406

Effect of Geographic Distance on Distance Education: An Empirical Study  

ERIC Educational Resources Information Center

This study investigates the effect of geographic distance on students' distance learning experience with the aim to provide tentative answers to a fundamental question--does geographic distance matter in distance education? Using educational outcome data collected from an online master's program in Geographic Information Systems, this…

Luo, Heng; Robinson, Anthony C.; Detwiler, Jim

2014-01-01

407

Finding Home: Challenges Faced by Geographically Mobile Families  

ERIC Educational Resources Information Center

This qualitative study explores the dialectical dimensions of home as experienced by geographically mobile couples. Informants (N = 48) defined home as having multiple meanings and locations, with 4 dialectical tensions embedded within their experience. Home was situated between (a) geographic spaces that were here and there, (b) geographic spaces…

Allen, Sarah

2008-01-01

408

The impact of climate change on the geographical distribution of two vectors of Chagas disease: implications for the force of infection.  

PubMed

Chagas disease, caused by the parasite Trypanosoma cruzi, is the most important vector-borne disease in Latin America. The vectors are insects belonging to the Triatominae (Hemiptera, Reduviidae), and are widely distributed in the Americas. Here, we assess the implications of climatic projections for 2050 on the geographical footprint of two of the main Chagas disease vectors: Rhodnius prolixus (tropical species) and Triatoma infestans (temperate species). We estimated the epidemiological implications of current to future transitions in the climatic niche in terms of changes in the force of infection (FOI) on the rural population of two countries: Venezuela (tropical) and Argentina (temperate). The climatic projections for 2050 showed heterogeneous impact on the climatic niches of both vector species, with a decreasing trend of suitability of areas that are currently at high-to-moderate transmission risk. Consequently, climatic projections affected differently the FOI for Chagas disease in Venezuela and Argentina. Despite the heterogeneous results, our main conclusions point out a decreasing trend in the number of new cases of Tr. cruzi human infections per year between current and future conditions using a climatic niche approach. PMID:25688019

Medone, Paula; Ceccarelli, Soledad; Parham, Paul E; Figuera, Andreína; Rabinovich, Jorge E

2015-04-01

409

Coinfection with Three Ehrlichia Species in Dogs from Thailand and Venezuela with Emphasis on Consideration of 16S Ribosomal DNA Secondary Structure  

PubMed Central

As part of a larger study to investigate tick-borne infections in dogs from Thailand and Venezuela, documentation of coinfection with three Ehrlichia species in two dogs, one from each country, became the focus of the present study. Although neither dog had clinical signs attributable to ehrlichiosis, both dogs were anemic and neutropenic and the Thai dog was thrombocytopenic. Genus- and species-specific PCR targeting the 16S rRNA genes indicated that both dogs were coinfected with Ehrlichia canis, E. platys, and E. equi. To our knowledge, these results provide the first molecular documentation for the presence of E. equi in dogs from these countries. Using universal bacterial PCR primers, one nearly full-length 16S rRNA gene could be amplified from each dog. The sequences were identical to each other and almost identical to that of E. platys (AF156784), providing the first E. platys 16S ribosomal DNA (rDNA) sequences reported from these two geographically divergent countries. To determine whether these sequence differences allow differentiation between these two strains and other published 16S rDNA E. platys sequences, we performed a phylogenetic analysis of the rRNA, incorporating the consideration of secondary structure. PMID:11136754

Suksawat, Jiraporn; Pitulle, Christian; Arraga-Alvarado, Cruz; Madrigal, Karina; Hancock, Susan I.; Breitschwerdt, Edward B.

2001-01-01

410

Genetic homogeneity within Leishmania (L.) infantum isolated from human and dogs: the relationship with the sandfly fauna distribution in endemic areas of Nueva Esparta State, Venezuela.  

PubMed

Leishmania infantum has been described as a highly polymorphic group of parasites, responsible for visceral leishmaniasis and cutaneous leishmaniasis. In this paper we report the life-cycle of L. (L.) infantum in an endemic area of visceral leishmaniasis in Venezuela, by using molecular diagnosis and characterization of parasites isolated from dogs, humans with visceral leishmaniasis and sand flies. The molecular characterization was carried out by use of kDNA restriction analysis, dot-blot hybridization with species-specific probes and RFLP of the PCR products. The results demonstrated that L. (L.) infantum is the parasite responsible for VL in the island. The parasites were revealed to be genetically homogeneous with no intra-specific differences between isolates from different individuals. The highest homology of the isolates was with L. (L.) infantum from the Old World rather than with L. (L.) chagasi from the New World. Additionally, we report the geographical distribution of Lutzomyia longipalpis, and the relationship with the transmission of L. (L.) infantum in the studied area. PMID:15977897

Rodriguez, N M; De Guglielmo, Z; Barrios, M A; Barrios, R M; Zerpa, O; Feliciangeli, M D

2005-06-01

411

Geographic Information Systems and Web Page Development  

NASA Technical Reports Server (NTRS)

The Facilities Engineering and Architectural Branch is responsible for the design and maintenance of buildings, laboratories, and civil structures. In order to improve efficiency and quality, the FEAB has dedicated itself to establishing a data infrastructure based on Geographic Information Systems, GIS. The value of GIS was explained in an article dating back to 1980 entitled "Need for a Multipurpose Cadastre" which stated, "There is a critical need for a better land-information system in the United States to improve land-conveyance procedures, furnish a basis for equitable taxation, and provide much-needed information for resource management and environmental planning." Scientists and engineers both point to GIS as the solution. What is GIS? According to most text books, Geographic Information Systems is a class of software that stores, manages, and analyzes mapable features on, above, or below the surface of the earth. GIS software is basically database management software to the management of spatial data and information. Simply put, Geographic Information Systems manage, analyze, chart, graph, and map spatial information. GIS can be broken down into two main categories, urban GIS and natural resource GIS. Further still, natural resource GIS can be broken down into six sub-categories, agriculture, forestry, wildlife, catchment management, archaeology, and geology/mining. Agriculture GIS has several applications, such as agricultural capability analysis, land conservation, market analysis, or whole farming planning. Forestry GIs can be used for timber assessment and management, harvest scheduling and planning, environmental impact assessment, and pest management. GIS when used in wildlife applications enables the user to assess and manage habitats, identify and track endangered and rare species, and monitor impact assessment.

Reynolds, Justin

2004-01-01

412

Geographic Information Processings for Astronomical Site Survey  

NASA Astrophysics Data System (ADS)

The geographic information is of great importance for the site survey of ground-based telescopes. Especially, an effective utilization of the geographic information system (GIS) has been one of the most significant methods for the remote analysis of modern site survey. The astronomical site survey should give consideration to the following geographical conditions: a large relative fall, convenient traffic conditions, and far away from populated areas. Taking into account of the convenience of construction and maintenance of the observatories as well as the living conditions of the scientists-in-residence, the optimum candidate locations may meet the conditions to be at a altitude between 3000 m and 5000 m and within one-hour drive from villages/towns. In this paper, as an example, we take the regions of the Great Baicao mountain ridge at Dayao county in Yunnan province to research the role of the GIS for site survey task. The results indicate that the GIS can provide accurate and intuitive data for us to understand the three dimensional landforms, rivers, roads, villages, and the distributions of the electric power as well as to forecast the tendency of the population and city development around. According to the analysis based on the GIS, we find that the top of the Great Baicao mountain ridge is flat and droughty. There are few inhabitants to distribute around the place while the traffic conditions are convenient. Moreover, it is a natural conservation area protected by the local government, and no industry with pollution sources exists in this region. Its top is 1500 m higher than the nearby village 10 km away, and 1800 m higher than the town center 50 km away. The Great Baicao mountain ridge is definitely an isolated peak in the area of the Yi nationality of Yunnan. Therefore, the GIS data analysis is a very useful for the remote investigation stage for site survey, and the GIS is the indispensable source for modern astronomical site survey.

Wu, N.; Liu, Y.; Zhao, M. Y.

2015-01-01

413

GeoDMA—Geographic Data Mining Analyst  

NASA Astrophysics Data System (ADS)

Remote sensing images obtained by remote sensing are a key source of data for studying large-scale geographic areas. From 2013 onwards, a new generation of land remote sensing satellites from USA, China, Brazil, India and Europe will produce in 1 year as much data as 5 years of the Landsat-7 satellite. Thus, the research community needs new ways to analyze large data sets of remote sensing imagery. To address this need, this paper describes a toolbox for combing land remote sensing image analysis with data mining techniques. Data mining methods are being extensively used for statistical analysis, but up to now have had limited use in remote sensing image interpretation due to the lack of appropriate tools. The toolbox described in this paper is the Geographic Data Mining Analyst (GeoDMA). It has algorithms for segmentation, feature extraction, feature selection, classification, landscape metrics and multi-temporal methods for change detection and analysis. GeoDMA uses decision-tree strategies adapted for spatial data mining. It connects remotely sensed imagery with other geographic data types using access to local or remote database. GeoDMA has methods to assess the accuracy of simulation models, as well as tools for spatio-temporal analysis, including a visualization of time-series that helps users to find patterns in cyclic events. The software includes a new approach for analyzing spatio-temporal data based on polar coordinates transformation. This method creates a set of descriptive features that improves the classification accuracy of multi-temporal image databases. GeoDMA is tightly integrated with TerraView GIS, so its users have access to all traditional GIS features. To demonstrate GeoDMA, we show two case studies on land use and land cover change.

Körting, Thales Sehn; Garcia Fonseca, Leila Maria; Câmara, Gilberto

2013-08-01

414

Book Review: "Educational Reform and Administrative Development: The Cases of Columbia and Venezuela," by E. Mark Hanson.  

ERIC Educational Resources Information Center

Reviews "Educational Reform and Administrative Development: The Cases of Colombia and Venezuela," by E. Mark Hanson, which relates the policy-making and administrative structures of these two countries to their political, historical, and cultural contexts. (TE)

Lynch, Patrick D.

1988-01-01

415

Risk prevention and policy formulation : responding to the 1999 mud-floods catastrophe in El Litoral Central, Venezuela  

E-print Network

Fifteen days of constant and intense rainfall in Venezuela culminated on December 16 1999, in catastrophic landslides and flooding along 25 miles of the Vargas State coastal strip. This catastrophe ravaged the Caracas ...

Parisca-Blanco, Sonia

2005-01-01

416

Misión Madres Del Barrio: A Bolivarian Social Program Recognizing Housework and Creating A Caring Economy in Venezuela  

E-print Network

ABSTRACT: This thesis began as a project about Misión Madres del Barrio; and it quickly transformed into a glimpse of the Bolivarian Revolution underway in Venezuela. Misión Madres del Barrio (MMB) is one of the pioneering ...

Fischer-Hoffman, Cory

2008-08-20

417

Geographical information systems and tropical medicine  

PubMed Central

In terms of their applicability to the field of tropical medicine, geographical information systems (GIS) have developed enormously in the last two decades. This article reviews some of the pertinent and representative applications of GIS, including the use of such systems and remote sensing for the mapping of Chagas disease and human helminthiases, the use of GIS in vaccine trials, and the global applications of GIS for health-information management, disease epidemiology, and pandemic planning. The future use of GIS as a decision-making tool and some barriers to the widespread implementation of such systems in developing settings are also discussed. PMID:20659391

KHAN, O. A.; DAVENHALL, W.; ALI, M.; CASTILLO-SALGADO, C.; VAZQUEZ-PROKOPEC, G.; KITRON, U.; SOARES MAGALHÃES, R. J.; CLEMENTS, A. C. A.

2013-01-01

418

Geographical Aspects of Cancer in Tanzania  

PubMed Central

Cancer is an important cause of morbidity and mortality in Tanzania. According to the Tanzanian Cancer Registry, which records all histologically confirmed malignant tumors, the number of reported cancer cases has increased significantly over the past three decades. The most commonly diagnosed tumors are cervix cancer, skin cancer, primary liver cancer, Kaposi's sarcoma, and Burkitt's lymphoma. Geographical and tribal variations exist in disease frequency. Environmental factors appear to have a major role in the distribution. Through elimination of these factors, cancer in Tanzania could be reduced if not totally prevented. ImagesFigure 3Figure 4Figure 5Figure 6Figure 7Figure 8 PMID:6631988

Alexander, George A.

1983-01-01

419

Digital Mapping and Geographic Information Systems (GIS)  

NSDL National Science Digital Library

Geographic information systems (GIS), once used predominantly by experts in cartography and computer programming, have become pervasive in everyday business and consumer use. This unit explores GIS in general as a technology about which much more can be learned, and it also explores applications of that technology. Students experience GIS technology through the use of Google Earth on the environmental topic of plastics in the ocean in an area known as the Great Pacific Garbage Patch. The use of this topic in GIS makes the unit multidisciplinary, incorporating the physics of ocean currents, the chemistry associated with pollutant degradation and chemical sorption to organic-rich plastics, and ecological impact to aquatic biota.

2014-09-18

420

Forces of Nature: National Geographic Education  

NSDL National Science Digital Library

This dynamic site from National Geographic Education features invigorating ganders into four of natureâ??s most devastating forces. Start with Tornadoes. Six sections â?? What is a Tornado, What Causes Tornadoes, and Characteristics of Tornadoes, among others â?? provide an informative overview of these sudden, sometimes devastating wind events. Next, take a look at Volcanoes, and click on headings like Where Do Volcanoes Occur? and How Do Volcanoes Erupt? Hurricanes and Earthquakes each deserve careful attention, especially the interactive, Spin Off Your Own Hurricane, where you can learn how hurricanes are made by building one yourself.

421

National Geographic Magazine: Saving Africa's Eden  

NSDL National Science Digital Library

This National Geographic Web site contains an online, multimedia supplement to a feature article from the September 2003 issue of the magazine, which takes an in-depth look at the prospect of setting aside an amazing 11% of Gabon's intact wilderness for conservation and ecotourism. The Web site includes an excerpt from the print article, but extra Web features are the real attraction. Visitors will find an online-only photo gallery, field notes from photographer Michael Nichols, and a handful of other cool features like the video clip featuring ecologist Mike Fay as he treks through Gabon's virtually unexplored wilderness.

2003-01-01

422

Harvesting geographic features from heterogeneous raster maps  

NASA Astrophysics Data System (ADS)

Raster maps offer a great deal of geospatial information and are easily accessible compared to other geospatial data. However, harvesting geographic features locked in heterogeneous raster maps to obtain the geospatial information is challenging. This is because of the varying image quality of raster maps (e.g., scanned maps with poor image quality and computer-generated maps with good image quality), the overlapping geographic features in maps, and the typical lack of metadata (e.g., map geocoordinates, map source, and original vector data). Previous work on map processing is typically limited to a specific type of map and often relies on intensive manual work. In contrast, this thesis investigates a general approach that does not rely on any prior knowledge and requires minimal user effort to process heterogeneous raster maps. This approach includes automatic and supervised techniques to process raster maps for separating individual layers of geographic features from the maps and recognizing geographic features in the separated layers (i.e., detecting road intersections, generating and vectorizing road geometry, and recognizing text labels). The automatic technique eliminates user intervention by exploiting common map properties of how road lines and text labels are drawn in raster maps. For example, the road lines are elongated linear objects and the characters are small connected-objects. The supervised technique utilizes labels of road and text areas to handle complex raster maps, or maps with poor image quality, and can process a variety of raster maps with minimal user input. The results show that the general approach can handle raster maps with varying map complexity, color usage, and image quality. By matching extracted road intersections to another geospatial dataset, we can identify the geocoordinates of a raster map and further align the raster map, separated feature layers from the map, and recognized features from the layers with the geospatial dataset. The road vectorization and text recognition results outperform state-of-art commercial products, and with considerably less user input. The approach in this thesis allows us to make use of the geospatial information of heterogeneous maps locked in raster format.

Chiang, Yao-Yi

2010-11-01

423

Earth's Active Volcanoes by Geographic Region  

NSDL National Science Digital Library

This site describes active volcanoes from around the world by using the volcano links from the Michigan Technological University and the homepages of observatories at active volcanoes. Each volcano section contains photo images, maps, and reference text. Some sections contain bibliographies, volcano reports, and video clips of lahars. The volcanoes are organized by the following geographic regions: Africa and surrounding islands; the Southwest Pacific, Southeast Asia, and India; East Asia including Japan and Kamchatka; Antarctica; the North Atlantic and Iceland; the Mediterranean; South America and surrounding islands; Central Pacific, South Pacific and New Zealand; Alaska and the Northern Pacific Region; North America; and Central America.

424

Household energy use in urban Venezuela: Implications from surveys in Maracaibo, Valencia, Merida, and Barcelona-Puerto La Cruz  

SciTech Connect

This report identifies the most important results of a comparative analysis of household commercial energy use in Venezuelan urban cities. The use of modern fuels is widespread among all cities. Cooking consumes the largest share of urban household energy use. The survey documents no use of biomass and a negligible use of kerosene for cooking. LPG, natural gas, and kerosene are the main fuels available. LPG is the fuel choice of low-income households in all cities except Maracaibo, where 40% of all households use natural gas. Electricity consumption in Venezuela`s urban households is remarkably high compared with the levels used in households in comparable Latin American countries and in households of industrialized nations which confront harsher climatic conditions and, therefore, use electricity for water and space heating. The penetration of appliances in Venezuela`s urban households is very high. The appliances available on the market are inefficient, and there are inefficient patterns of energy use among the population. Climate conditions and the urban built form all play important roles in determining the high level of energy consumption in Venezuelan urban households. It is important to acknowledge the opportunities for introducing energy efficiency and conservation in Venezuela`s residential sector, particularly given current economic and financial constraints, which may hamper the future provision of energy services.

Figueroa, M.J.; Sathaye, J.

1993-08-01

425

Geographic wormhole detection in wireless sensor networks.  

PubMed

Wireless sensor networks (WSNs) are ubiquitous and pervasive, and therefore; highly susceptible to a number of security attacks. Denial of Service (DoS) attack is considered the most dominant and a major threat to WSNs. Moreover, the wormhole attack represents one of the potential forms of the Denial of Service (DoS) attack. Besides, crafting the wormhole attack is comparatively simple; though, its detection is nontrivial. On the contrary, the extant wormhole defense methods need both specialized hardware and strong assumptions to defend against static and dynamic wormhole attack. The ensuing paper introduces a novel scheme to detect wormhole attacks in a geographic routing protocol (DWGRP). The main contribution of this paper is to detect malicious nodes and select the best and the most reliable neighbors based on pairwise key pre-distribution technique and the beacon packet. Moreover, this novel technique is not subject to any specific assumption, requirement, or specialized hardware, such as a precise synchronized clock. The proposed detection method is validated by comparisons with several related techniques in the literature, such as Received Signal Strength (RSS), Authentication of Nodes Scheme (ANS), Wormhole Detection uses Hound Packet (WHOP), and Wormhole Detection with Neighborhood Information (WDI) using the NS-2 simulator. The analysis of the simulations shows promising results with low False Detection Rate (FDR) in the geographic routing protocols. PMID:25602616

Sookhak, Mehdi; Akhundzada, Adnan; Sookhak, Alireza; Eslaminejad, Mohammadreza; Gani, Abdullah; Khurram Khan, Muhammad; Li, Xiong; Wang, Xiaomin

2015-01-01

426

Plants and geographical names in Croatia.  

PubMed

The main purpose of this paper is to present some general observations, regularities and insights into a complex relationship between plants and people through symbolic systems like geographical names on the territory of Croatia. The basic sources of data for this research were maps from atlas of Croatia of the scale 1:100000. Five groups of maps or areas were selected in order to represent main Croatian phytogeographic regions. A selection of toponyms from each of the map was made in which the name for a plant in Croatian language was recognized (phytotoponyms). Results showed that of all plant names recognized in geographical names the most represented are trees, and among them birch and oak the most. Furthermore, an attempt was made to explain the presence of the most represented plant species in the phytotoponyms in the light of general phytogeographical and sociocultural differences and similarities of comparing areas. The findings confirm an expectation that the genera of climazonal vegetation of particular area are the most represented among the phytotoponyms. Nevertheless, there are ample examples where representation of a plant name in the names of human environment can only be ascribed to ethno-linguistic and socio-cultural motives. Despite the reductionist character of applied methodology, this research also points out some advantages of this approach for ethnobotanic and ethnolinguistic studies of greater areas of human environment. PMID:18982772

Cargonja, Hrvoje; Dakovi?, Branko; Alegro, Antun

2008-09-01

427

Geographic Wormhole Detection in Wireless Sensor Networks  

PubMed Central

Wireless sensor networks (WSNs) are ubiquitous and pervasive, and therefore; highly susceptible to a number of security attacks. Denial of Service (DoS) attack is considered the most dominant and a major threat to WSNs. Moreover, the wormhole attack represents one of the potential forms of the Denial of Service (DoS) attack. Besides, crafting the wormhole attack is comparatively simple; though, its detection is nontrivial. On the contrary, the extant wormhole defense methods need both specialized hardware and strong assumptions to defend against static and dynamic wormhole attack. The ensuing paper introduces a novel scheme to detect wormhole attacks in a geographic routing protocol (DWGRP). The main contribution of this paper is to detect malicious nodes and select the best and the most reliable neighbors based on pairwise key pre-distribution technique and the beacon packet. Moreover, this novel technique is not subject to any specific assumption, requirement, or specialized hardware, such as a precise synchronized clock. The proposed detection method is validated by comparisons with several related techniques in the literature, such as Received Signal Strength (RSS), Authentication of Nodes Scheme (ANS), Wormhole Detection uses Hound Packet (WHOP), and Wormhole Detection with Neighborhood Information (WDI) using the NS-2 simulator. The analysis of the simulations shows promising results with low False Detection Rate (FDR) in the geographic routing protocols. PMID:25602616

Sookhak, Mehdi; Akhundzada, Adnan; Sookhak, Alireza; Eslaminejad, Mohammadreza; Gani, Abdullah; Khurram Khan, Muhammad; Li, Xiong; Wang, Xiaomin

2015-01-01

428

Geographical Education and Society. Papers Presented at Commission on Geographical Education International Geographical Union (Sitges, Spain, August 25-31, 1986).  

ERIC Educational Resources Information Center

Educational discourse is totally completely imbued with the values that affect the societies to which individuals belong. Those in the field of geographical education must examine those values in order to determine what type of geographical education is best for each society. The following papers contribute to this knowledge: "Presentation"…

Hernando, Agustin, Ed.

429

Integrating Geographic Information Systems (GIS) Applications into Business Courses Using Online Business Geographics Modules  

ERIC Educational Resources Information Center

Although the value of geographic information systems (GIS) technologies is recognized by practitioners and educators alike, GIS instruction has yet to make significant inroads into business curricula. In this article, the authors discuss the constraints of integrating GIS tools into business education. They develop a prototype module for…

Miller, Fred; Mangold, W. Glynn; Holmes, Terry

2006-01-01

430

Comet Halleys Legacy: SUNA, Astronomy from Universidad Central de Venezuela (U.C.V.)  

NASA Astrophysics Data System (ADS)

The Sociedad Universitaria de Astronomia (SUNA) is a group of astronomy amateurs which works inside the Universidad Central de Venezuela (Venezuelas Central University)s campus. The initiative is originated during the path through the perihelion of Comet Halley in 1986, and since then their goals are promotion of astronomical information to all the university community. Observational works are also carried out, such as: registration and investigation of astronomical events, with the purpose to offer the opportunity to all public, mostly students o the University, to enjoy a spectacle, and at the same time to motivate the students to continue professional studies of astronomy. Being this last goal one of the most gratifying in the society.

Romero, Gabriel; Fernandez, Nelson

2007-12-01

431

Review of the Berosus Leach of Venezuela (Coleoptera, Hydrophilidae, Berosini) with description of fourteen new species  

PubMed Central

Abstract The species of the water scavenger beetle genus Berosus Leach occurring in Venezuela are reviewed. Thirty-six species are recorded, including fifteen new species, fourteen of which are described here as new: Berosus aragua sp. n., Berosus asymmetricus sp. n., Berosus capanaparo sp. n., Berosus castaneus sp. n., Berosus corozo sp. n., Berosus ebeninus sp. n., Berosus garciai sp. n., Berosus humeralis sp. n., Berosus jolyi sp. n., Berosus llanensis sp. n., Berosus megaphallus sp. n., Berosus ornaticollis sp. n., Berosus repertus sp. n., and Berosus tramidrum sp. n. The fifteenth new species, known from a single female, is left undescribed pending the collection of males. Twelve species are recorded from Venezuela for the first time: Berosus ambogynus Mouchamps, Berosus consobrinus Knisch, Berosus elegans Knisch, Berosus geayi d’Orchymont, Berosus ghanicus d’Orchymont, Berosus guyanensis Queney, Berosus holdhausi Knisch, Berosus marquardti Knisch, Berosus olivae Queney, Berosus reticulatus Knisch, Berosus wintersteineri Knisch, and Berosus zimmermanni Knisch. PMID:22811607

Oliva, Adriana; Short, Andrew E. Z.

2012-01-01

432

Potential effects of global climatic change on the phenology and yield of maize in venezuela  

Microsoft Academic Search

Simulated impacts of global and regional climate change, induced by an enhanced greenhouse effect and by Amazonian deforestation, on the phenology and yield of two grain corn cultivars in Venezuela (CENIAP PB-8 and OBREGON) are reported. Three sites were selected:Turén, Barinas andYaritagua, representing two important agricultural regions in the country. The CERES-Maize model, a mechanistic process-based model, in theDecision Support

Carlos E. Maytín; Miguel F. Acevedo; Ramón Jaimez; Rigoberto Andressen; Mark A. Harwell; Alan Robock; Aura Azócar

1995-01-01

433

Receiver function study of the crustal structure of the southeastern Caribbean plate boundary and Venezuela  

Microsoft Academic Search

We have investigated crustal thickness and composition across the southeastern Caribbean plate boundary with the receiver function technique. We used teleseismic data recorded by a temporary broadband array deployed under the BOLIVAR project and the permanent national seismic network of Venezuela. We used the primary P-to-S conversion and crustal reverberations to estimate crustal thickness and average crustal VP\\/VS ratio over

Fenglin Niu; Tammy Bravo; Gary Pavlis; Frank Vernon; Herbert Rendon; Maximiliano Bezada; Alan Levander

2007-01-01

434

Prevalence of erectile dysfunction in Colombia, Ecuador, and Venezuela: a population-based study (DENSA)  

Microsoft Academic Search

The purpose of this study was to estimate the prevalence of erectile dysfunction (ED) in Colombia, Ecuador, and Venezuela. A 49-item questionnaire was completed by 1946 men aged 40 years and older. The age-adjusted combined prevalence of minimal, moderate, and complete ED for all three countries was 53.4%, with 19.8% of all men reporting moderate to complete ED. Age was

L E Morillo; J Díaz; E Estevez; A Costa; H Méndez; H Dávila; N Medero; N Rodriguez; M Chaves; R Vinueza; J A Ortiz; D B Glasser

2002-01-01

435

Environmental radioactivity near the central coast of Venezuela and its radiological impact  

Microsoft Academic Search

The concentrations of40K,226Ra,232Th and137Cs were determined in the upper layers of soils in the central coastal region of Venezuela. The activities of137Cs are higher in the areas where the forest is well developed, oriented towards the wind and at higher elevations. The origin\\u000a of the137Cs deposition is from water input from the clouds directly in the cloudforest and rainfall from

D. Palacios; D. Castro; M. Perez; F. Urbani; L. Sajo-Bohus; J. J. LaBrecque

1999-01-01

436

Geochemistry and anthropogenic inputs of metals in a tropical lake in Venezuela  

Microsoft Academic Search

Lake Valencia is a tropical lowland lake in north-central Venezuela. Lake bottom sediments were collected from 25 locations in April, 1988. At 2 locations water pH, conductivity, dissolved O2 and temperature were measured at successive depths. After drying, 5 sediment samples were sieved into 5 mechanical fractions. Each was extracted with 1 M HNO3 and analysed for AI, Ca, Cd,

B. E. Davies; C BIFANO

1996-01-01

437

BRUCELLA SPP. FROM THE CAPYBARA (HYDROCHAERIS HYDROCHAERIS) IN VENEZUELA: SEROLOGIC STUDIES AND METABOLIC CHARACTERIZATION OF ISOLATES  

Microsoft Academic Search

AIIsTRA(:T: A bacteriological and serological studs' of 201 wild capybara from the Ilanus, State of Apure, Venezuela was made to isolate Bruce\\/Ia from spleen and lymph node tissues and determine the role of this rodent as a reservoir of this bacteria. Twenty-three isolations were made, eight were identified as B. abortus and 15 as B. suis by oxidative metabolic techniques.

Veronica R. Lord

1983-01-01

438

78 FR 4437 - Silicomanganese From India, Kazakhstan, Venezuela: Notice of Commission Determination To Conduct...  

Federal Register 2010, 2011, 2012, 2013, 2014

The Commission hereby gives notice that it will proceed with full reviews pursuant to section 751(c)(5) of the Tariff Act of 1930 (19 U.S.C. 1675(c)(5)) to determine whether revocation of the antidumping duty orders on silicomanganese from India, Kazakhstan, and Venezuela would be likely to lead to continuation or recurrence of material injury within a reasonably foreseeable time. A schedule for......

2013-01-22

439

77 FR 59970 - Silicomanganese From India, Kazakhstan, and Venezuela; Institution of Five-Year Reviews...  

Federal Register 2010, 2011, 2012, 2013, 2014

The Commission hereby gives notice that it has instituted reviews pursuant to section 751(c) of the Tariff Act of 1930 (19 U.S.C. 1675(c)) (the Act) to determine whether revocation of the antidumping duty orders on silicomanganese from India, Kazakhstan, and Venezuela would be likely to lead to continuation or recurrence of material injury. Pursuant to section 751(c)(2) of the Act, interested......

2012-10-01

440

A new species of Piaroa (Schizomida: Hubbardiidae) from Venezuela, with taxonomic notes on the genus.  

PubMed

A new species belonging to the schizomid genus Piaroa Villarreal, Giupponi and Tourinho, 2008 is described from north-western Venezuela. A complementary description of Piaroa guipongai Villarreal and Garcia, 2012 is provided including SEM pictures of relevant structures of both sexes. A key for males of Piaroa and Colombiazomus Armas and Delgado-Santa, 2012 is included. The presence of Dm3 setae on Hubbardiidae is discussed. PMID:24870907

M, Osvaldo Villarreal; De Armas, Luis F; García, Luis Fernando

2014-01-01

441

Individuals in a Collectivist World: Born in the U.S.A., Teaching in Caracas, Venezuela  

ERIC Educational Resources Information Center

Venezuela is a country slightly larger than twice the size of California, the third largest U.S.A. state in land area. Caracas, the capitol city, is home to a population of 6 million people nested into a space that is actually smaller in size than the area of Minneapolis-St. Paul, Minnesota, U.S.A., a city/suburb of only 2.8 million people. In…

Warring, Douglas F.; Huber-Warring, Tonya

2006-01-01

442

New particle formation events observed at a high altitude site Pico Espejo, Venezuela  

NASA Astrophysics Data System (ADS)

Formation and growth events of nucleation mode particles (10-25 nm in diameter) were analyzed from 27 month period of particle size distribution measurements at the high altitude site Pico Espejo in Venezuela. Particle formation was observed both in air masses connected to boundary layer air and in free tropospheric conditions. The frequency and magnitude of particle formation at this high altitude site was comparable to many observations at lower altitude sites.

Nieminen, Tuomo; Kontkanen, Jenni; Krejci, Radovan; Ström, Johan; Tunved, Peter; Hamburger, Thomas; Calderon, Silvia; Hoffman, Pedro

2013-05-01

443

78 FR 13380 - Silicomanganese From India, Kazakhstan, and Venezuela; Scheduling of Full Five-Year Reviews...  

Federal Register 2010, 2011, 2012, 2013, 2014

The Commission hereby gives notice of the scheduling of full reviews pursuant to section 751(c)(5) of the Tariff Act of 1930 (19 U.S.C. 1675(c)(5)) (the Act) to determine whether revocation of the antidumping duty orders on silicomanganese from India, Kazakhstan, and Venezuela would be likely to lead to continuation or recurrence of material injury within a reasonably foreseeable time. For......

2013-02-27

444

Determination of genotypes of hepatitis C virus in Venezuela by restriction fragment length polymorphism.  

PubMed Central

Hepatitis C virus genotypes in Venezuela were analyzed by restriction fragment length polymorphism in the 5' noncoding region. The absence of BstUI digestion was found to be a useful marker for genotype 2 specimens. From 122 serum samples, 66, 20, and 2.5% were classified as genotypes 1, 2, and 3, respectively; 0.8% were classified as genotype 4; and 10% appeared to be mixed infections. PMID:9196212

Pujol, F H; Loureiro, C L; Devesa, M; Blitz, L; Parra, K; Beker, S; Liprandi, F

1997-01-01

445

Using NDVI from MODIS to Monitor Duckweed Bloom in Lake Maracaibo, Venezuela  

Microsoft Academic Search

Four summer time-series (2003–2006) of Normalized Difference Vegetation Index (NDVI) derived from MODIS imagery were used\\u000a to investigate duckweed blooms and other floating vegetation in Lake Maracaibo, Venezuela. Preliminary findings revealed the\\u000a presence of duckweed and floating vegetation in the Lake during summer in varying amounts (0–11%) that appeared to be related\\u000a to satellite-derived rainfall anomalies from the Special Sensor

Lawrence M. Kiage; Nan D. Walker

2009-01-01

446

Extreme Genetic Diversity among Pirital Virus ( Arenaviridae) Isolates from Western Venezuela  

Microsoft Academic Search

Pirital-like virus isolates from rodents collected in a variety of habitats within a six-state area of central Venezuela were analyzed genetically by amplifying a portion of the nucleocapsid protein gene using RT-PCR. Comparisons of the sequences from 30 selected Pirital-like virus isolates demonstrated up to 26% divergence in nucleotide sequences and up to 16% divergence in deduced amino acid sequences.

Scott C. Weaver; Rosa Alba Salas; Nuris de Manzione; Charles F. Fulhorst; Amelia P. A. Travasos da Rosa; Gloria Duno; Antonio Utrera; James N. Mills; Thomas G. Ksiazek; Duilia Tovar; Hilda Guzman; Wenli Kang; Robert B. Tesh

2001-01-01

447

Geographic Information Systems and Web Page Development  

NASA Technical Reports Server (NTRS)

The Facilities Engineering and Architectural Branch is responsible for the design and maintenance of buildings, laboratories, and civil structures. In order to improve efficiency and quality, the FEAB has dedicated itself to establishing a data infrastructure based on Geographic Information Systems, GIs. The value of GIS was explained in an article dating back to 1980 entitled "Need for a Multipurpose Cadastre which stated, "There is a critical need for a better land-information system in the United States to improve land-conveyance procedures, furnish a basis for equitable taxation, and provide much-needed information for resource management and environmental planning." Scientists and engineers both point to GIS as the solution. What is GIS? According to most text books, Geographic Information Systems is a class of software that stores, manages, and analyzes mapable features on, above, or below the surface of the earth. GIS software is basically database management software to the management of spatial data and information. Simply put, Geographic Information Systems manage, analyze, chart, graph, and map spatial information. At the outset, I was given goals and expectations from my branch and from my mentor with regards to the further implementation of GIs. Those goals are as follows: (1) Continue the development of GIS for the underground structures. (2) Extract and export annotated data from AutoCAD drawing files and construct a database (to serve as a prototype for future work). (3) Examine existing underground record drawings to determine existing and non-existing underground tanks. Once this data was collected and analyzed, I set out on the task of creating a user-friendly database that could be assessed by all members of the branch. It was important that the database be built using programs that most employees already possess, ruling out most AutoCAD-based viewers. Therefore, I set out to create an Access database that translated onto the web using Internet Explorer as the foundation. After some programming, it was possible to view AutoCAD files and other GIS-related applications on Internet Explorer, while providing the user with a variety of editing commands and setting options. I was also given the task of launching a divisional website using Macromedia Flash and other web- development programs.

Reynolds, Justin

2004-01-01

448

Combined Rock Magnetic and Dielectric studies applied to stratigraphic and archeological problems in Venezuela  

NASA Astrophysics Data System (ADS)

In the last few years the paleomagnetism research group, at the Universidad Simon Bolivar in Caracas (Venezuela), has undertaken combined studies of rock magnetism (e.g. natural magnetic remanence, magnetic susceptibility, hysteresis parameters etc.) and dielectric properties (maximum current depolarization temperatures and average activation energies) in Cretaceous and Paleogene sedimentary sequences from eastern and western Venezuela. Our main goal has been to find new ways of defining physical markers, in fossil- poor sedimentary rocks, for stratigraphic correlations. Magneto/dielectric characterizations of these rocks have proved also useful identifying lithological discontinuities and paleoenvironmental changes. More recently these two-fold technique have been extended to archeological materials (potsherds) from a series of Venezuelan islands, in order to track down clay sources and find out about different stages of pottery craftsmanship. Magneto/Dielectric characterization of archeological potsherds seems to allow the tracing of their provenance from various mainland prehistoric settlements of distinct Venezuelan amerindian groups. In this paper we present a comprehensive review of this research applied to a contact between two sedimentary formations in eastern Venezuela (Cretaceous Chimana/Querecual) and a number of pottery samples with diverse stylistic features excavated in a single archeological site from Los Roques islands.

Costanzo-Alvarez, V.; Aldana, M.; Suarez, N.

2007-05-01

449

Distribution, status, and traditional significance of the West Indian manatee Trichechus manatus in Venezuela  

USGS Publications Warehouse

Aerial and interview surveys were conducted in 1986 to determine the current distribution, status, and traditional significance of the West Indian manatee Trichechus manatus in Venezuela. Aerial surveys provided just eight tentative sightings in 73 hours of searching. These discouraging results may have been due to poor visibility, small populations, and perhaps reduced dry season manatee activity. Results of interview surveys, however, permitted a number of important generalizations. A remnant manatee population exists in Lake Maracaibo, but none occur along the more than 1500 km of Caribbean coastline. Abundance is greatest in eastern Venezuela bordering the Golfo de Paria, in the Orinoco Delta, and in the middle Orinoco and tributaries. Local market hunting in the middle of this century probably greatly reduced manatee populations in these areas. Recent protection laws, education efforts, and manatee scarcity have resulted in a declining interest in manatee hunting. Much excellent manatee habitat persists in these regions, and a continued decline in hunting could result in an optimistic outlook for future manatee populations if the incidental take in net fisheries is controlled. Traditional beliefs and legends concerning manatees in Venezuela, including hunting taboos, show that these animals remain a colorful part of the folk culture. However, manatee protection does not pose economic hardships or infringe upon traditional spiritual beliefs.

O'Shea, Thomas J.; Correa-Viana, Martín; Ludlow, Mark E.; Robinson, John G.

1988-01-01

450

The Volunteered Geographic Information in Archaeology  

NASA Astrophysics Data System (ADS)

The purpose of the paper is to investigate the Volunteered Geographic Information (VGI), which is still at a very early stage, to identify its use worldwide including characteristic examples and research its potential applications in Cultural Heritage and Archaeology as a new field for study. In the first part of the paper a brief review of the field is given, the international terminology and its components are analysed. The basic framework of VGI and the international research trends are presented as well. The second part deals with the applications of VGI in Cultural Heritage and Archaeology. Finally, some thoughts, conclusions and recommendations for action and institutionalization of use are offered underlining that VGI cannot be applied to Archaeology without professional attendance and supervision so as unwanted results can be prevented.

Sylaiou, S.; Basiouka, S.; Patias, P.; Stylianidis, E.

2013-07-01

451

Geographic Information System Interactive Map Server  

NSDL National Science Digital Library

Cornell University's Institute for the Study of the Continents (INSTOC) has launched this interactive, data-rich Website to provide regional "maps showing major geographic features of a region, along with such information as the location of earthquake faults, a record of earthquake occurrences and technical data about the events." The Geoscience Interactive Database (Java applet with accompanying User Guide) enables users to interact dynamically with "large volumes of organized digital data sets, map and display any parts of selected data," and create unique maps for download (in postscript or JPEG formats). In addition to the database, INSTOC offers information about their current projects, highlighted at the Webpage, including Building the Digital Earth, Active Tectonics Studies in the Dead Sea Fault Zone, and The Saudi Arabia Seismology Project, among others.

452

A situated knowledge representation of geographical information  

SciTech Connect

In this paper we present an approach to conceiving of, constructing and comparing the concepts developed and used by geographers, environmental scientists and other earth science researchers to help describe, analyze and ultimately understand their subject of study. Our approach is informed by the situations under which concepts are conceived and applied, captures details of their construction, use and evolution and supports their ultimate sharing along with the means for deep exploration of conceptual similarities and differences that may arise among a distributed network of researchers. The intent here is to support different perspectives onto GIS resources that researchers may legitimately take, and to capture and compute with aspects of epistemology, to complement the ontologies that are currently receiving much attention in the GIScience community.

Gahegan, Mark N.; Pike, William A.

2006-11-01

453

National Geographic's Strange Days on Planet Earth  

NSDL National Science Digital Library

Teaming up with PBS, National Geographic has created an intriguing four-part documentary series titled "Strange Days on Planet Earth" that is meant to explore a number of events and processes (such as climatic change and invasive species) and their long- and short-term effects across the planet. Hosted by actor Edward Norton, the series producer's have also created this complementary website where interested parties can learn more about these processes. For example, in the "One Degree Factor" section (which explores global climatic change), users can read interviews with experts working in this field and also learn about the relevance of this process to their own lives. The site also contains a nice glossary of terms and a place where individuals can offer their own comments on the program.

454

The geographical distribution of Q fever  

PubMed Central

The results of a WHO-assisted survey of the distribution of Q fever in 32 countries and an analysis of reports published to date indicate that Q fever exists in 51 countries on five continents. Q-fever infection was most often reported in man and the domestic ruminants, such as cattle, sheep, and goats. The disease was found to exist in most countries where investigations were carried out. Notable exceptions were Ireland, the Netherlands, New Zealand, Poland, and the Scandinavian countries. With the exception of Poland, where the results were inconclusive, all these countries import relatively few domestic ruminants—the most important animal reservoirs of human Q-fever infection. It seems, therefore, that the traffic of infected ruminants may be one of the most important, if not the most important, means for the geographical spread of Q fever. The importance, if any, of ticks associated with such traffic needs to be defined. PMID:13284560

Kaplan, Martin M.; Bertagna, P.

1955-01-01

455

National Geographic: WildCam Africa  

NSDL National Science Digital Library

In 1985, Pete Le Roux dreamed of a wildlife reserve in Africa. Twenty years later it is a successful reality, as the pond he built from an old irrigation system is alive with the sounds of elephants and impalas. Visitors to this site established by National Geographic Magazine can view "Pete's Pond" via a live webcam offered here. Of course, that's just one of the many highlights that visitors may enjoy. They may also want to read through the weblog authored by researchers Jeanette Selier and Villiers Steyn. Here they post highlights of their work, complemented by a selection of high-quality images of the animals they are studying, such as the African wild cat. Those who are cartographically minded may want to take a look at the map of the Mashatu Game Reserve, which is home to Pete's Pond and its thousands of different animal residents. Overall, this is a fine educational site, and one that warrants several visits.

2005-01-01

456

Stennis Space Center Environmental Geographic Information System  

NASA Technical Reports Server (NTRS)

As NASA's lead center for rocket propulsion testing, the John C. Stennis Space Center (SSC) monitors and assesses the off-site impacts of such testing through its Environmental Office (SSC-EO) using acoustical models and ancillary data. The SSC-EO has developed a geographical database, called the SSC Environmental Geographic Information System (SSC-EGIS), that covers an eight-county area bordering the NASA facility. Through the SSC-EGIS, the Enivronmental Office inventories, assesses, and manages the nearly 139,000 acres that comprise Stennis Space Center and its surrounding acoustical buffer zone. The SSC-EGIS contains in-house data as well as a wide range of data obtained from outside sources, including private agencies and local, county, state, and U.S. government agencies. The database comprises cadastral/geodetic, hydrology, infrastructure, geo-political, physical geography, and socio-economic vector and raster layers. The imagery contained in the database is varied, including low-resolution imagery, such as Landsat TM and SPOT; high-resolution imagery, such as IKONOS and AVIRIS; and aerial photographs. The SSC-EGIS has been an integral part of several major projects and the model upon which similar EGIS's will be developed for other NASA facilities. The Corps of Engineers utilized the SSC-EGIS in a plan to establish wetland mitigation sites within the SSC buffer zone. Mississippi State University employed the SSC-EGIS in a preliminary study to evaluate public access points within the buffer zone. The SSC-EO has also expressly used the SSC-EGIS to assess noise pollution modeling, land management/wetland mitigation assessment, environmental hazards mapping, and protected areas mapping for archaeological sites and for threatened and endangered species habitats. The SSC-EO has several active and planned projects that will also make use of the SSC-EGIS during this and the coming fiscal year.

Lovely, Janette; Cohan, Tyrus

2000-01-01

457

Investigation of Error Patterns in Geographical Databases  

NASA Technical Reports Server (NTRS)

The objective of the research conducted in this project is to develop a methodology to investigate the accuracy of Airport Safety Modeling Data (ASMD) using statistical, visualization, and Artificial Neural Network (ANN) techniques. Such a methodology can contribute to answering the following research questions: Over a representative sampling of ASMD databases, can statistical error analysis techniques be accurately learned and replicated by ANN modeling techniques? This representative ASMD sample should include numerous airports and a variety of terrain characterizations. Is it possible to identify and automate the recognition of patterns of error related to geographical features? Do such patterns of error relate to specific geographical features, such as elevation or terrain slope? Is it possible to combine the errors in small regions into an error prediction for a larger region? What are the data density reduction implications of this work? ASMD may be used as the source of terrain data for a synthetic visual system to be used in the cockpit of aircraft when visual reference to ground features is not possible during conditions of marginal weather or reduced visibility. In this research, United States Geologic Survey (USGS) digital elevation model (DEM) data has been selected as the benchmark. Artificial Neural Networks (ANNS) have been used and tested as alternate methods in place of the statistical methods in similar problems. They often perform better in pattern recognition, prediction and classification and categorization problems. Many studies show that when the data is complex and noisy, the accuracy of ANN models is generally higher than those of comparable traditional methods.

Dryer, David; Jacobs, Derya A.; Karayaz, Gamze; Gronbech, Chris; Jones, Denise R. (Technical Monitor)

2002-01-01

458

ORNL and the geographic information systems revolution  

SciTech Connect

Explorers from competing teams race to find a mysterious lost city in the heart of Africa. The American team is continuously in touch with its Houston home base through satellite communications. In flight, team leader Karen Ross displays a map of Africa on her computer screen and notes the multicolored lines suggesting different routes from city to city and into the rain forest. Each pathway is accompanied by a precise estimate of travel time to the final destination. Zooming in on the target area, she switches to satellite images and interprets them in shades of blue, purple, and green. At each checkpoint, the team reports its progress and gets a revised estimate of arrival time. Beset by difficulties, the explorers ask for a faster route, but the computer says the alternative is too dangerous. A simulation model with data representing geology, terrain, vegetation, weather, and many other geographic factors predicts local hazards, including the impending eruption of a nearby volcano. The Americans take the faster route anyway and beat the odds. This fictional account of emerging geographic information system (GIS) technologies comes from Michael Crichton`s 1980 novel Congo, which was made into a 1995 movie. The same technologies were highlighted in Clive Cussler`s 1988 techno-thriller Treasure. In reality, GIS technology began more than a quarter of a century ago at key universities and government laboratories in the United States and Canada. Since 1969, Oak Ridge National Laboratory has been among the leading institutions in this diverse, now booming field. GIS has been evolving through new forms and applications ever since.

Dobson, J.E.; Durfee, R.C.

1995-12-31

459

Evolution of Dengue Virus Type 3 Genotype III in Venezuela: Diversification, Rates and Population Dynamics  

PubMed Central

Background Dengue virus (DENV) is a member of the genus Flavivirus of the family Flaviviridae. DENV are comprised of four distinct serotypes (DENV-1 through DENV-4) and each serotype can be divided in different genotypes. Currently, there is a dramatic emergence of DENV-3 genotype III in Latin America. Nevertheless, we still have an incomplete understanding of the evolutionary forces underlying the evolution of this genotype in this region of the world. In order to gain insight into the degree of genetic variability, rates and patterns of evolution of this genotype in Venezuela and the South American region, phylogenetic analysis, based on a large number (n = 119) of envelope gene sequences from DENV-3 genotype III strains isolated in Venezuela from 2001 to 2008, were performed. Results Phylogenetic analysis revealed an in situ evolution of DENV-3 genotype III following its introduction in the Latin American region, where three different genetic clusters (A to C) can be observed among the DENV-3 genotype III strains circulating in this region. Bayesian coalescent inference analyses revealed an evolutionary rate of 8.48 × 10-4 substitutions/site/year (s/s/y) for strains of cluster A, composed entirely of strains isolated in Venezuela. Amino acid substitution at position 329 of domain III of the E protein (A?V) was found in almost all E proteins from Cluster A strains. Conclusions A significant evolutionary change between DENV-3 genotype III strains that circulated in the initial years of the introduction in the continent and strains isolated in the Latin American region in recent years was observed. The presence of DENV-3 genotype III strains belonging to different clusters was observed in Venezuela, revealing several introduction events into this country. The evolutionary rate found for Cluster A strains circulating in Venezuela is similar to the others previously established for this genotype in other regions of the world. This suggests a lack of correlation among DENV genotype III substitution rate and ecological pattern of virus spread. PMID:21087501

2010-01-01

460

Physiologie, mtabolisme Mtabolisme sucre-citrate  

E-print Network

important and widely appreciated, little is known about the genetic properties of Leuconostoc spp. In our important functions of this bacteria are their ability to produce CO2 and flavour compounds through lactose/modification system. The low transformation efficiency of some strains of Leuconostoc may be due to the presence

Paris-Sud XI, Université de

461

Receiver Functions Imaging of the Moho and LAB in the Southern Caribbean plate boundary and Venezuela  

NASA Astrophysics Data System (ADS)

We have made teleseismic Ps and Sp receiver functions from data recorded from 2003 to 2009 by the permanent national seismic network of Venezuela, the BOLIVAR (Broadband Onshore-offshore Lithospheric Investigation of Venezuela and the Antilles arc Region) and WAVE (Western Array for Venezuela) experiments. The receiver functions show rapid variations in Moho and lithosphere-asthenosphere boundary (LAB) depths both across and along the southern Caribbean plate boundary region. We used a total of 69 events with Mw > 6 occurring at epicentral distances from 30° to 90° for the Ps receiver functions, and 43 events with Mw > 5.7 from 55° to 85° to make Sp receiver functions. For CCP stacking we constructed a 3D velocity model from numerous active source profiles (Schmitz et al., 2001; Bezada et al., 2007; Clark et al., 2008; Guedez, 2008; Magnani et al., 2009), from finite-frequency P wave upper mantle tomography model of Bezada et al., (2010) and the Rayleigh wave tomography model of Miller et al., (2009). The Moho ranges in depth from ~25 km beneath the Caribbean Large Igneous Provinces to ~55 km beneath the Mérida Andes in western Venezuela. These results are consistent with previous receiver functions studies (Niu et al., 2007) and the available active source profiles. Beneath the Maracaibo Block in northwestern Venezuela, we observe a strong positive signal at 40 to 60 km depth dipping ~6° towards the continent. We interpret this as the Moho of the Caribbean slab subducting beneath northernmost South America from the west. Beneath northern Colombia and northwestern Venezuela the top of this slab has been previously inferred from intermediate depth seismicity (Malavé and Suarez, 1995), which indicates a slab dipping between 20° - 30° beneath Lake Maracaibo. Our results could indicate that the slab is tearing beneath Lake Maracaibo as suggested previously by Masy et al. (2011). The deeper (> 100 km depth) part of the slab has been imaged using P-wave tomography (Bezada et al, 2010). Like others we attribute the uplift of the Mérida Andes to flat Caribbean slab subduction (for example Kellogg and Bonini, 1982). In central Venezuela beneath the Cordillera de la Costa we observe a positive signal shallower than the Moho at <30 km depth beneath the entire range. We interpret this as a detachment surface beneath Caribbean & arc terranes thrust onto the SA margin (Bezada et al., 2010). The lithosphere-asthenosphere boundary (LAB) beneath the Mérida Andes is shallow, ~65km depth, and parallels the range. In the plate boundary region under the Cordillera de la Costa the lithosphere is also thin, ~65km, beneath the Cariaco basin the lithosphere thickens to 85 km. In the far east under Serranía del Interior the lithosphere is ~75 km. Cratonic lithosphere thickness varies from 85 to 100 km.

Masy, J.; Levander, A.; Niu, F.

2011-12-01

462

Geographic diversity of Helicobacter pylori in cadavers: forensic estimation of geographical origin.  

PubMed

A method for determining the geographical origin of unidentified cadavers by determining the genotype of Helicobacter pylori, which is latent in one-half of the world's population, was developed. In the first stage, DNA was extracted from samplings at 5 points in the gastric mucosa of 177 individuals randomly selected from cadavers undergoing medico-legal autopsy. 16S-rDNA of H. pylori DNA was detected by polymerase chain reaction (PCR) in 101 cadavers (57.0%); by sex, 74 of 123 (60.1%) males and 28 of 54 (46.4%) females were positive. There were no significant differences in H. pylori detection rate among the 5 sampling points of the gastric mucosa, cause of death, or age. In the second stage, amplified fragments of H. pylori vacA regions s and m from 17 individuals with the following ethnic backgrounds were sequenced: Japanese, 10; Chinese, 2; South Korean, 1; Taiwanese, 1; Thai, 1; Afghan, 1; and Filipino, 1. A phylogenetic tree constructed with these and 28 previously reported H. pylori strain sequences revealed 3 major gene clusters consisting of East Asian type I (Japanese, South Korean and Chinese), Western type II, and Southeast Asia type III. The Taiwanese and Filipino samples deviated from the clusters type III to which they typically belong. The ultimate aim of the present study was to develop a more accurate method of determining of geographic origin of unidentified cadavers through the combination of the present method with other, virus-based methods H. pylori DNA was detected from over half of the cadavers tested and vacA genotypes showed specificity to geographical origin. Therefore, these results suggest that the H. pylori genome provides valuable additional information for tracing the geographical origin of unidentified cadavers. PMID:23683903

Nagasawa, Sayaka; Motani-Saitoh, Hisako; Inoue, Hiroyuki; Iwase, Hirotaro

2013-06-10

463

Young Americans Still Having Difficulty with Global Geographic Knowledge  

NSDL National Science Digital Library

In a report released earlier this week, the National Geographic Society announced the results of a recent survey of geographic knowledge among young persons (ages 18 to 24), from nine different countries. Conducted with the assistance of the RoperASW group, the survey revealed some rather disturbing gaps in the geographic knowledge base of young Americans and other young people around the world. Among the young people surveyed in the United States, nearly 30 percent could not locate the Pacific Ocean and more than half could not locate India, home of almost 20 percent of the world's population. John Fahey, the president of the National Geographic Society, also commented that, while nine out of 1young Americans could identify the United States on a world map, "it does make you wonder about the other 10 percent."The first link leads to a recent news article on this geographic survey that appeared in the Chicago Sun-Times. The second link will take visitors to the results of the National Geographic Survey, which also provides a sample quiz for persons to test their own geographic knowledge. Also sponsored by National Geographic, the third link features dozens of helpful thematic maps, dealing with historical and contemporary themes, such as political and cultural maps of the world. The fourth link leads to a 2001 report on improving secondary geographic education from the Royal Geographic Society. Provided by the Environmental Design Library at the University of California at Berkeley, the fifth site is an excellent annotated bibliography of source material for persons interested in learning and researching the cultural landscape of the United States. The sixth link leads to some famous remarks given by Carl Sauer (one of the 20th century's most respected geographers) on the subject of historical geography and its importance to understanding human communities. The final link leads to a sardonic editorial by Gillian Ferguson of the Scotsman newspaper in Scotland on these recent survey results.

Grinnell, Max

2002-01-01

464

Case Study: Using Geographic Information Systems for Education Policy Analysis  

ERIC Educational Resources Information Center

Effective exploration of spatially referenced educational achievement data can help educational researchers and policy analysts accelerate interpretation of datasets to gain valuable insights. This paper illustrates the use of Geographic Information Systems (GIS) to analyze educational achievement gaps in Arkansas. It introduces the Geographic…

Mulvenon, Sean W.; Wang, Kening; McKenzie, Sarah; Airola, Denise

2006-01-01

465

Representation and Spatial Analysis in Geographic Information Systems  

Microsoft Academic Search

A common—perhaps modal—representation of geography in spatial analysis and geographic information systems is native (unexamined) objects interacting based on simple distance and connectivity relationships within an empty Euclidean space. This is only one possibility among a large set of geographic representations that can support quantitative analysis. Through the vehicle of GIS, many researchers are adopting this representation without realizing its

Harvey J. Miller; Elizabeth A. Wentz

2003-01-01

466

Guide to Geographical Indications: Linking Products and Their Origins (Summary)  

Microsoft Academic Search

Geographical Indications present significant opportunities for differentiating products or services that are uniquely related to their geographic origin. While they can offer many positive economic, social, cultural, and even environmental benefits, they can also be problematic and therefore caution is warranted when pursuing them. The publication distills the relevant lessons that could apply, particularly to developing countries, from a review

Daniele Giovannucci; Timothy Josling; William Kerr; Bernard OConnor; May T. Yeung

2009-01-01

467

The study of tourism in Britain — a geographical perspective  

Microsoft Academic Search

This review must be seen alongside others which have attempted to explore the relationship between geography (and geographers) and the study of leisure and recreation (Coppock 1980, 1982a). It serves to confirm the wide-ranging and diverse contribution that geographers have made in this field and the ways in which the study of tourism has reflected developments in the wider discipline.

Brian S. Duffield

1984-01-01

468

Mining a Multilingual Geographical Gazetteer from the Web  

Microsoft Academic Search

Geographical gazetteers are necessary in a wide variety of applications. In the past, the construction of such gazetteers has been a tedious, manual process and only recently have the first attempts to automate the gazetteers creation been made. Here we describe our approach for mining accurate but large-scale multilingual geographic information by successively filtering information found in heterogeneous data sources

Adrian Popescu; Gregory Grefenstette; Houda Bouamor

2009-01-01

469

Assessing Geographical Clustering of Outpatient Psychiatric Service Utilization in Philadelphia  

E-print Network

-spot, Outpatient psychiatric service utilization, GIS, Racial disparity #12;2 Assessing Geographical Clustering, CMHC Act (1963) under the Kennedy administration established "Community Mental Health Centers" (CMHCs) across the nation to provide high-quality mental health services that are geographically and economically

Smith, Tony E.

470

Research Needs in Geographic Education: Suggestions and Possibilities.  

ERIC Educational Resources Information Center

Three papers prepared for the Greyston Conference held at Columbia University October 18-20, 1964 and one paper resulting from conference discussions and inquiries by geographer-participants focus upon current research needs and opportunities for improvement in geographic education for elementary grades (ages 6-12). The four titles under which…

National Council for Geographic Education.

471

Empirical analytic transformations between geographic and corrected geomagnetic coordinates  

NASA Technical Reports Server (NTRS)

Based upon a mathematical model of contours of constant corrected geomagnetic latitude in a polar projection of geographic coordinates, analytic equations are developed for converting geographic coordinates to corrected geomagnetic coordinates and vice versa. The equations were programmed for use on a small computer. This treatment is restricted to the Northern Hemisphere.

Comfort, R. H.

1970-01-01

472

Quantifying geographical and macroeconomic effects on bank branch  

E-print Network

. Branching facilitates geographic diversification, which allows banks to diversify their assets by improvingQuantifying geographical and macroeconomic effects on bank branch deposits using linear mixed and potential is central to decisions pertaining to the location of bank branches. A common method

Haug, Stephan

473

Applications of Geographic Research: Viewpoints from Michigan State University.  

ERIC Educational Resources Information Center

Eighteen essays discuss applications of geographic research covering a variety of topics and methodologies. All authors are faculty, graduates, or graduate students of the geography department at Michigan State University. The most frequently discussed themes include economic, political, social, and medical uses of geographic research. Two papers…

Winters, Harold A., Ed.; Winters, Marjorie K., Ed.

474

Politics and priorities: placing gender in geographic education  

Microsoft Academic Search

Gender has long been implicated in geographic education, though generally implicitly until the late twentieth century. Emphasizing British and American examples, this paper examines gender representation among geographic educators, in student participation, and in learning. It then turns to pedagogical issues that arise as content and strategies relevant to gender themes are addressed in different temporal and place contexts. It

Janice Monk

2011-01-01

475

UTILISATION OF QUALITATIVE SPATIAL REASONING IN GEOGRAPHIC INFORMATION  

E-print Network

, Auckland, New Zealand Abstract Spatial reasoning is a fundamental part of human cognition, playing an imporUTILISATION OF QUALITATIVE SPATIAL REASONING IN GEOGRAPHIC INFORMATION SYSTEMS Carl P.L. Schultz GIS com- monly provide powerful tools that allow a user to manipulate, query and view this geographic

Amor, Robert

476

Original article Geographic variation in Varroa jacobsoni (Acari,  

E-print Network

and New Zealand (Griffiths and Bowman, 1981). Until recently, V. jacobsoni had not bee present in CentralOriginal article Geographic variation in Varroa jacobsoni (Acari, Varroidae) : application in character variance across their geographic range. There is no reason to suspect the occurrence of more than

Paris-Sud XI, Université de

477

Host specificity and geographic range in haematophagous ectoparasites  

E-print Network

@bgumail.bgu.ac.il). Á/ R. Poulin, Dept. of Zoology, Univ.of Otago, P.O. Box 56, Dunedin, New Zealand. Á/ D. MouillotHost specificity and geographic range in haematophagous ectoparasites Boris R. Krasnov, Robert. I., Mouillot, D. and Khokhlova, I. S. 2005. Host specificity and geographic range in haematophagous

Poulin, Robert

478

Geographic patterns of diversification: an example with ectoparasitic insects  

E-print Network

, New Zealand Received 1 April 2008; accepted for publication 3 June 2008 On any spatial scaleGeographic patterns of diversification: an example with ectoparasitic insects BORIS R. KRASNOV1 among tree branches. We tested for geographical patterns in the diversity skewness of flea assemblages

Poulin, Robert

479

Sensitivity of distributional prediction algorithms to geographic data completeness  

Microsoft Academic Search

The sensitivity of one algorithm for prediction of geographic distributions of species from point data to depth of geographic information was tested for three species of North American birds. Test species were chosen to represent three distinct distributional patterns—western North America (Pygmy Nuthatch Sitta pygmaea), eastern North America (Barred Owl Strix varia), and the Great Plains in the central part

A Townsend Peterson; Kevin P Cohoon

1999-01-01

480

Multimodal Geographic Information Systems: Adding Haptic and Auditory Displays.  

ERIC Educational Resources Information Center

This study consists of two experiments. Pitch, volume, and tempo in auditory-haptic geographic information systems were compared in terms of effectiveness for multimodal interface; volume was determined to be better. Auditory display with volume and haptic display with vibration were compared and the results showed that, in more complex geographic…

Jeong, Wooseob

2001-01-01

481

A Manifesto on Mobile Computing in Geographic Education  

Microsoft Academic Search

Mobile, location-aware computing technology is widely available. In this article we sketch out a manifesto on mobile computing in geographic education (MoGeo) for consideration and debate within the geographic community. At the core of our argument is the idea that emerging mobile computing technologies will allow teachers to bring the classroom and pedagogic materials into the field, and that the

Marc P. Armstrong; David A. Bennett

2005-01-01

482

A WAP-based geographic information mobile service  

Microsoft Academic Search

In this paper, we present a conceptual model for mobile geographical information service that integrates geographic information technology, mobile telecommunication technology, and relevant key technologies. We discuss several problems related to GI mobile service: 1) the GI mobile service mode; 2) the research system and structure of GI mobile service; 3) a systematic GI mobile structure based on WAP; 4)

Wei Zhongya; Xu Suning; Wu Lun

2003-01-01

483

Two Perspectives on Data Quality Geographic Knowledge Production Through GIS  

E-print Network

Two Perspectives on Data Quality Geographic Knowledge Production Through GIS: Towards a Model Report 92-12 December 1992 #12;Geographic Knowledge Production Through GIS: Towards a Model for Quality through GIS: Towards a model for quality monitoring. HELEN COUCLELIS Department of Geography University

California at Santa Barbara, University of

484

MODULE DESCRIPTION FORM CL 961 Geographical Information Systems (GIS)  

E-print Network

MODULE DESCRIPTION FORM CL 961 Geographical Information Systems (GIS) Module Registrar: Dr Elsa current state-of-the-art Geographical Information Systems (GIS). GIS are spatial databases that can handle of living in different areas is related to health and disease. Although GIS is a crucial analytical tool

Mottram, Nigel

485

Connecting the Demographic Dots: Geographic Mobility and Birth Intentions  

ERIC Educational Resources Information Center

Having a child is a major determinant of geographic mobility. Little is known, however, about the opposite process--whether geographic mobility is a determinant of fertility. Drawing on social and human capital theories and research on fertility and migration to develop competing hypotheses, the author examines the effects of mobility on changes…

Myers, Scott M.

2010-01-01

486

Jobs for Geographers. Views by Members in the Profession.  

ERIC Educational Resources Information Center

How best can the employment opportunities of those trained as professional geographers (undergraduate majors and those holders of advanced degrees) be enhanced? This question, put to some seventy professional geographers associated with academic institutions, business, and government, resulted in answers involving: instruction, job hunting, the…

Vinge, Clarence L.

487

Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations  

Microsoft Academic Search

We compare the geographic location of patent citations to those of the cited patents, as evidence of the extent to which knowledge spillovers are geographically localized. We find that citations to U.S. patents are more likely to come from the U.S., and more likely to come from the same state and SMSA as the cited patents than one would expect

Adam B. Jaffe; Manuel Trajtenberg; Rebecca Henderson

1992-01-01

488

RESEARCH Open Access Design and field evaluation of geographical  

E-print Network

RESEARCH Open Access Design and field evaluation of geographical location-aware service discovery://jwcn.eurasipjournals.com/content/2012/1/29 © 2012 Noguchi et al; licensee Springer. This is an Open Access article distributed under position inside dynamic mobile environments. In this article, we propose a geographical location aware

Paris-Sud XI, Université de

489

Geographic Location and Social Work Supervision in Child Welfare  

Microsoft Academic Search

Although the idea of person in the environment is a dominant paradigm in social work, the concept of environment does not emphasize the idea of geographic location. This qualitative research explores social work supervision of child welfare workers from the perspective of geographic place. Ten supervisors from urban communities and 12 supervisors from northern remote communities were interviewed to assess

Glen Schmidt

2008-01-01

490

Geographically-sensitive network centrality and survivability assessment  

Microsoft Academic Search

Network survivability deals with theories and prac- tices involved in preserving essential services of a network after accidents and\\/or attacks. Major catastrophes such as hurricanes and weapons of mass destruction are expected to introduce patterns of faults on a network that are strongly geograph- ically correlated. In this work we emphasize the interplay between geographic information about the network and

T. Feyessa; M. Bikdash

2011-01-01

491

THE CIAO: WEB PORTAL OF GEOGRAPHIC INFORMATION FOR WEST AFRICA  

E-print Network

THE CIAO: WEB PORTAL OF GEOGRAPHIC INFORMATION FOR WEST AFRICA GEORIS CREUSEVEAU, J.1, GOURMELON, F and Marine Area of West Africa). It leads to a web portal of information for the West African coastal zone, GEOGRAPHICAL INFORMATION, METADATA, WEB PORTAL, WEST AFRICA INTRODUCTION The West African coastal region

Paris-Sud XI, Université de

492

Seasonal Forcing on the Dynamics of Clethrionomys rufocanus: Modeling Geographic  

E-print Network

Seasonal Forcing on the Dynamics of Clethrionomys rufocanus: Modeling Geographic Gradients main seasons ­ summer (the primary breeding season) and winter (the non-reproductive or secondary breeding season). We show that the geographic transition in dynamics may be understood as the combined

493

GEOGRAPHY 200B: GEOGRAPHICAL THOUGHT, RESEARCH, AND PROFESSIONAL DEVELOPMENT  

E-print Network

GEOGRAPHY 200B: GEOGRAPHICAL THOUGHT, RESEARCH, AND PROFESSIONAL DEVELOPMENT Winter 2012 Class will be the historical arc of geographical thought with the formation of Geography as a discipline and its contemporary: geography as place, geography as space, geography as changes on the face of the earth, and geography

Lopez-Carr, David

494

GEOGRAPHIC INFORMATION SYSTEMS CENTER FOR ENVIRONMENTAL MANAGEMENT OF MILITARY LANDS  

E-print Network

GEOGRAPHIC INFORMATION SYSTEMS CENTER FOR ENVIRONMENTAL MANAGEMENT OF MILITARY LANDS CEMML | 1490@cemml.colostate.edu | http://www.cemml.colostate.edu A Geographic Information System (GIS) is a necessary tool for effective and efficient decision making, planning, and management of military training lands. GIS provides a spatial

495

IZA DP No. 3669 Local Social Capital and Geographical Mobility  

E-print Network

IZA DP No. 3669 Local Social Capital and Geographical Mobility: Some Empirics and a Conjecture #12;Local Social Capital and Geographical Mobility: Some Empirics and a Conjecture on the Nature Chile and IZA Etienne Wasmer Sciences-Po Paris, OFCE, CEPR and IZA Discussion Paper No. 3669 August 2008

Boyer, Edmond

496

IZA DP No. 3668 Local Social Capital and Geographical Mobility  

E-print Network

IZA DP No. 3668 Local Social Capital and Geographical Mobility: A Theory Quentin David Alexandre for the Study of Labor August 2008 hal-00972827,version1-3Apr2014 #12;Local Social Capital and Geographical Chile and IZA Etienne Wasmer Sciences-Po Paris, OFCE, CEPR and IZA Discussion Paper No. 3668 August 2008

Paris-Sud XI, Université de

497

Geographic Differences in the Earnings of Economics Majors  

ERIC Educational Resources Information Center

Economics has been shown to be a relatively high-earning college major, but geographic differences in earnings have been largely overlooked. The authors of this article use the American Community Survey to examine geographic differences in both absolute earnings and relative earnings for economics majors. They find that there are substantial…

Winters, John V.; Xu, Weineng

2014-01-01

498

Lived and Imagined: Information and Storytelling in Geographic Systems  

ERIC Educational Resources Information Center

This dissertation investigates the relationship between storytelling and information in the narration of geographic space. While storytelling has historically shaped our understanding of geography, modern practices in data collection, cartography, and geographic visualization enable one-way forms of representation that remove the negotiation and…

Kabisch, Eric Alan

2011-01-01

499

Distance Education in Geographic Information Science: Symposium and  

E-print Network

Distance Education in Geographic Information Science: Symposium and an Informal Survey DAWN J and risks of distance education are certainly not lost on the geographic information science (GIScience as in GIScience education (the fundamental science behind GIS) grows, so too does the demand for effective modes

Wright, Dawn Jeannine

500

Geographical Load Balancing with Renewables Zhenhua Liu, Minghong Lin,  

E-print Network

Geographical Load Balancing with Renewables Zhenhua Liu, Minghong Lin, Adam Wierman, Steven H. Low the significant energy consumption of data centers, im- proving their energy efficiency is an important social to evaluate three issues related to achieving this goal: the impact of geographical load balancing, the role

Jensen, Grant J.