177,819 research outputs found
Grebe, Holboell
No full textHolbeoll\u27s Grebe By R.H. Beebe. Taken in Arcade.https://digitalcommons.brockport.edu/bird_slides/1071/thumbnail.jp
How to Allocate R&D (and Other) Subsidies: An Experimentally Tested Policy Recommendation
No full textThis paper evaluates how R&D subsidies to the business sector are typically awarded. We identify two sources of ine_ciency: the selection based on a ranking of individual projects, rather than complete allocations, and the failure to induce competition among applicants in order to extract and use information about the necessary funding. In order to correct these ine_- ciencies we propose mechanisms that include some form of an auction in which applicants bid for subsidies. Our proposals are tested in a simulation and in controlled lab experiments. The results suggest that adopting our proposals may considerably improve the allocation
Grebe, Holboell
No full textHolbeoll's Grebe By R.H. Beebe. Taken in Arcade.Archived web contentSUNY BrockportLantern Slides of New York Bird
How to Allocate R&D (and Other) Subsidies: An Experimentally Tested Policy Recommendation
No full textThis paper evaluates how R&D subsidies to the business sector are typically awarded. We identify two sources of ine_ciency: the selection based on a ranking of individual projects, rather than complete allocations, and the failure to induce competition among applicants in order to extract and use information about the necessary funding. In order to correct these ine_- ciencies we propose mechanisms that include some form of an auction in which applicants bid for subsidies. Our proposals are tested in a simulation and in controlled lab experiments. The results suggest that adopting our proposals may considerably improve the allocation.Research; Subsidies; Experimental Economics
Insight into the early steps of root hair formation revealed by the procuste1 cellulose synthase mutant of Arabidopsis thaliana
No full textBackground: formation of plant root hairs originating from epidermal cells involves selection of a polar initiation site and production of an initial hair bulge which requires local cell wall loosening. In Arabidopsis the polar initiation site is located towards the basal end of epidermal cells. However little is currently understood about the mechanism for the selection of the hair initiation site or the mechanism by which localised hair outgrowth is achieved. The Arabidopsis procuste1 (prc1-1) cellulose synthase mutant was studied in order to investigate the role of the cell wall loosening during the early stages of hair formation. Results: the prc1-1 mutant exhibits uncontrolled, preferential bulging of trichoblast cells coupled with mislocalised hair positioning. Combining the prc1-1 mutant with root hair defective6-1 (rhd6-1), which on its own is almost completely devoid of root hairs results in a significant restoration of root hair formation. The pEXPANSIN7::GFP (pEXP7::GFP) marker which is specifically expressed in trichoblast cell files of wild-type roots, is absent in the rhd6-1 mutant. However, pEXP7::GFP expression in the rhd6-1/prc1-1 double mutant is restored in a subset of epidermal cells which have either formed a root hair or exhibit a bulged phenotype consistent with a function for EXP7 during the early stages of hair formation. Conclusion: these results show that RHD6 acts upstream of the normal cell wall loosening event which involves EXP7 expression and that in the absence of a functional RHD6 the loosening and accompanying EXP7 expression is blocked. In the prc1-1 mutant background, the requirement for RHD6 during hair initiation is reduced which may result from a weaker cell wall structure mimicking the cell wall loosening events during hair formation
The Pied-Billed Grebe
No full textThe pied-billed grebe is a common inhabitant of Iowa\u27s remaining prairie ponds and marshes. Pied-bills are small, aquatic birds weighing between 300 and 500 grams. They are strong swimmers, but relatively weak fliers
Automatengesteuertes skalierbares Verfahren zum Lastausgleich
No full textBeerbohm D, Bresken S, Hofestädt R, Huang X. Automatengesteuertes skalierbares Verfahren zum Lastausgleich. In: Flieger R, Grebe R, eds. Parallele Datenverarbeitung aktuell. Amsterdam: IOS Press; 1994: 100-108
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
Diets of Three Sympatric Grebe Species in Lake Titicaca Indicate Possible Dietary Niche Partitioning
No full textDietary niche partitioning is a fundamental process in community ecology, of interest to both conservationists and ecologists. We present data on the dietary niches of three sympatric grebes from Lake Titicaca: the endangered endemic Titicaca Grebe Rollandia microptera , Rolland's Grebe Rollandia rolland , and the Silvery Grebe Podiceps occipitalis . This is the first study comparing the diets of these three species since 1981. We conducted stomach content analysis on 45 Titicaca Grebes, 30 Rolland's Grebes, and 15 Silvery Grebes, and quantified the degree of niche overlap among individuals and what prey classes were driving variation between species. Rolland's Grebe and the Silvery Grebe have a more invertebrate‐based diet than the Titicaca Grebe. The use of presence‐absence methodologies and numeric methodologies for counting prey items leads to different results regarding dietary differences between these species. While our dietary categories are too coarse to definitively prove it is a case of dietary niche partitioning, it is indicative of it. We suggest future avenues to prove dietary niche partitioning in these species, and how dietary studies could answer questions regarding this ecosystem's response to invasive species
"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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