177,487 research outputs found
Acanthococcus gracielae Gonzalez & Claps
No full text<i>Acanthococcus gracielae</i> González & Claps <p> <i>Acanthococcus gracielae</i> González & Claps 2011: 267 –268.</p> <p> <b>Material examined.</b> Holotype: Argentina, Salta, Río Colorado (24°48'0″ S, 62°27'0″ W), unknown host, 6/XI/ 1993, M.C.G. Willink col. (IFML). Paratypes: 3 adult females with the same data as the holotype.</p> <p> <b>Additional material examined.</b> Argentina, Tucumán, San Miguel de Tucumán (26° 49′ 0″ S, 65° 13′ 0″ W), on “tatané” <i>Chloroleucon tenuiflorum</i>, -/5/2015, Claps & Moreno col., 2(5); on “churqui” <i>Acacia caven</i>, same date and collector, 2(4) (IFML).</p> <p> <b>Diagnosis</b>. Slide-mounted adult female with abundant dorsal conical setae in transverse lines on abdominal and thoracic segments; symmetrical macrotubular ducts; numerous microtubular ducts of type B on both surfaces; marginal setae undifferentiated from dorsal setae; metacoxa each with approximately 50 pores, 30 on dorsal surface and 20 on ventral surface; anal lobes with 2 ventral setae (González & Claps 2011).</p> <p> <b>Observations.</b> Severe attacks have been noted on urban trees of <i>Chloroleucon tenuiflorum</i> (Fig. 5), an unusual phenomenon among eriococcids in Argentina. Such attacks can damage hosts.</p> <p> <b>Distribution.</b> Argentina, Neotropical region, Chaco subregion, Chaco province.</p>Published as part of <i>González, Patricia, Claps, Lucía E., Juárez, Andrea & Moreno, Diego, 2017, Review of the Eriococcidae (Hemiptera: Coccomorpha) infesting Fabaceae in Argentina, with descriptions of three new species of Acanthococcus Signoret, pp. 41-57 in Zootaxa 4232 (1)</i> on page 50, DOI: 10.11646/zootaxa.4232.1.3, <a href="http://zenodo.org/record/292749">http://zenodo.org/record/292749</a>
Catchment similarity for regional predictions in ungauged basins, EGU General Assembly 2009 - Vienna, Austria, 19-24 April 2009.
No full textSession HS5.10: Catchment similarity for regional predictions in ungauged basins
Convener: E. Toth
Co-Conveners: P. A. Troch , R.A. Woods , P. Claps
This session originates directly from research activities carried out under the PUB initiative [Predictions in Ungauged Basins, an IAHS initiative e.g., external link: http://pub.iwmi.org] and focus on the estimation streamflow-regime indicators (e.g., annual flow, flow-duration curves, floods and low-flows) through regionalization of hydrological information. In particular, the attention is focussed on objective and process-based criteria to be used for catchment classification, spatial interpolation of streamflow indices, identification of hydrologically homogeneous groups of basins. Original contributions are solicited that address the investigation of similarities among catchment characteristics and processes. Four different aspects are of particular importance:
- the role of catchment similarities in the explanation of regional hydrological patterns;
- pooling schemes in the context of hydrologically homogeneous groups of sites;
- analysis of possible common dominant processes as a basis for describing catchment similarity;
- assessment of uncertainty of regional streamflow prediction in ungauged sites.
The session format consists of a standard EGU oral&poster session and an open forum discussion in a splinter meeting room afterwards. The open forum will enable us to further discuss the topic in a friendly and informal atmosphere
Aspetti gestionali del pascolamento a rotazione per l’allevamento di bovini di razza marchigiana in collina.
No full textRadar Estimation of Intense Rainfall Rates through Adaptive Calibration of the Z-R Relation
No full textRainfall intensity estimation from weather radar is still significantly uncertain, due to local anomalies, radar beam attenuation, inappropriate calibration of the radar reflectivity factor (Z) to rainfall rate (R) relationship, and sampling errors. The aim of this work is to revise the use of the power-law equation commonly adopted to relate radar reflectivity and rainfall rate to increase the estimation quality in the presence of intense rainfall rates. We introduce a quasi real-time procedure for an adaptive in space and time estimation of the Z-R relation. The procedure is applied in a comprehensive case study, which includes 16 severe rainfall events in the north-west of Italy. The study demonstrates that the technique outperforms the classical estimation methods for most of the analysed events. The determination coefficient improves by up to 30% and the bias values for stratiform events decreases by up to 80% of the values obtained with the classical, non-adaptive, Z-R relations. The proposed procedure therefore shows significant potential for operational uses
Isohypsibius sculptus Ramazzotti 1962
No full text<i>Isohypsibius sculptus</i> (Ramazzotti, 1962) <p>This species has been previously recorded in Chile and Mexico (McInnes, 1994). In Argentina, the first record came from Río Negro Province (Rossi & Claps, 1989).</p>Published as part of <i>Rossi, Gustavo, Claps, Maria & Ardohain, Diego, 2009, Tardigrades from northwestern Patagonia (Neuquén Province, Argentina) with the description of three new species, pp. 21-36 in Zootaxa 2095</i> on page 24, DOI: <a href="http://zenodo.org/record/187610">10.5281/zenodo.187610</a>
Isohypsibius sculptus Ramazzotti 1962
No full text<i>Isohypsibius sculptus</i> (Ramazzotti, 1962) <p>This species has been previously recorded in Chile and Mexico (McInnes, 1994). In Argentina, the first record came from Río Negro Province (Rossi & Claps, 1989).</p>Published as part of <i>Rossi, Gustavo, Claps, Maria & Ardohain, Diego, 2009, Tardigrades from northwestern Patagonia (Neuquén Province, Argentina) with the description of three new species, pp. 21-36 in Zootaxa 2095</i> on page 24, DOI: <a href="http://zenodo.org/record/187610">10.5281/zenodo.187610</a>
Echiniscus bigranulatus Richters 1908
No full text<i>Echiniscus bigranulatus</i> Richters, 1908 <p> This species exhibits a restricted distribution, consisting of South and Central America according to Michalczyk & Kaczmarek (2006), with it being widely distributed in Argentina (in the provinces of Buenos Aires, Misiones, Corrientes, Entre Ríos, Tucumán, Salta, Río Negro, Santa Cruz, and Tierra del Fuego) (Claps <i>et al</i>., 2008). Previously in a review of tardigrade distribution, McInnes (1994) cited its presence in Europe, Africa, Indonesia, and New Zealand.</p>Published as part of <i>Rossi, Gustavo, Claps, Maria & Ardohain, Diego, 2009, Tardigrades from northwestern Patagonia (Neuquén Province, Argentina) with the description of three new species, pp. 21-36 in Zootaxa 2095</i> on page 23, DOI: <a href="http://zenodo.org/record/187610">10.5281/zenodo.187610</a>
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Lee R. Jackson Field Dedication (S2_B25_F9_15)
No full textLee R. Jackson (center) claps during the dedication of Lee R. Jackson field, with Dominic J. Guzzetta on the right
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
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