171,508 research outputs found
C. Riggi. Epifanio contro Mani
No full textGuillaumont Antoine. C. Riggi. Epifanio contro Mani. In: Revue de l'histoire des religions, tome 181, n°2, 1972. pp. 220-221
C. Riggi. Epifanio contro Mani
No full textGuillaumont Antoine. C. Riggi. Epifanio contro Mani. In: Revue de l'histoire des religions, tome 181, n°2, 1972. pp. 220-221
Data om skador på bondbönor (Bruchus rufimanus), pollinering av humle (Bombus terrestris) och skörd av fababöna (Vicia faba) - burförsök i Sverige
No full textIdentifying and quantifying crop stressors interactions in agroecosystems is necessary to guide sustainable crop management strategies. Over the last 50 years, faba bean cropping area has been declining, partly due to yield instabilities associated to uneven insect pollination and herbivory. Yet, the effect of interactions between pollinators and a key pest, the broad bean beetle Bruchus rufimanus (florivorous and seed predating herbivore) on faba bean yield has not been investigated. Using a factorial cage experiment (2 x 2 m) in the field we investigated how interactions between insect pollination by bumblebees and herbivory by the broad bean beetle, affect faba bean yield. The data on pest damage , pollinators visitation and behavior and faba bean yield components and biomass used in the paper: Riggi, L., Raderschall, C., & Lundin, O. (2022). Insect pest damage increases faba bean (Vicia faba) yield components but only in the absence of insect pollination. In Ecology and Evolution (Vol. 12). https://doi.org/10.1002/ece3.8686 is presented. The data material on pest, pest damage, pollinators visitation and faba bean yield components used in the paper: Riggi, L., Raderschall, C., & Lundin, O. (2022). Insect pest damage increases faba bean (Vicia faba) yield components but only in the absence of insect pollination. In Ecology and Evolution (Vol. 12). https://doi.org/10.1002/ece3.8686Att identifiera och kvantifiera interaktioner mellan stressfaktorer som påverkar grödor i agroekosystem är nödvändigt för att guida hållbara grödskötselstrategier. Under de senaste 50 åren har arealen med åkerbönor minskat, delvis på grund av instabila skördar kopplade till ojämn pollinering och herbivori. Effekterna av interaktioner mellan pollinerare och en viktig skadegörare, bönsmyg Bruchus rufimanus (blom- och fröätande herbivor) på åkerbönsskörden har dock inte undersökts. Med hjälp av ett faktoriellt burförsök undersökte vi hur interaktioner mellan förmodade två stressfaktorer, avsaknad av insektspollinering och herbivori orsakad av bönsmyg, påverkar åkerbönsskörden. Data om skadegörare, pollinerare och åkerbönsskördekomponeter använda i publikationen: Riggi, L., Raderschall, C., & Lundin, O. (2022). Insect pest damage increases faba bean (Vicia faba) yield components but only in the absence of insect pollination. In Ecology and Evolution (Vol. 12). https://doi.org/10.1002/ece3.8686 presenteras. Data om skadegörare, pollinerare och åkerbönsskördekomponeter som använda i publikationen: Riggi, L., Raderschall, C., & Lundin, O. (2022). Insect pest damage increases faba bean (Vicia faba) yield components but only in the absence of insect pollination. In Ecology and Evolution (Vol. 12). https://doi.org/10.1002/ece3.868
Nominal vs real wage rigidities in New Keynesian models with hiring costs: A Bayesian evaluation
No full textThe inclusion of labor market frictions in the new Keynesian DSGE model overcomes the main drawbacks of the baseline framework. In this paper we show that this extended model, by assuming real wage rigidities, does not replicate the correct wage dynamics and the negative conditional correlation between technology shocks and employment observed in the data, known as the "productivity-employment puzzle". We show also that these empirical limitations can be overcome by replacing real wage rigidities with nominal wage rigidities, without sacrificing other appealing features of the model. We adopt a Bayesian perspective to estimate the dynamic properties of the model with real wage rigidities and compare them with those of the model with nominal wage rigidities. We show that the evidence favors this latter construction. (C) 2010 Elsevier B.V. All rights reserved
Performance pay and changes in US labor market dynamics
No full textA shift in the design of labor compensation occurred at around the mid-1980s in the U.S. and deals with an increased role of performance pay in driving the cyclical movements of wages. Using a DSGE model we show that this structural change accounts at least qualitatively for many observed changes in the U.S. labor market dynamics. It generates the disappearance of the procyclical response of labor productivity to non-technology shocks and the reduction of the contractionary effects of technology shocks on hours. Moreover, it is conducive to a drop in the volatility of output, a parallel increase in the volatility of wages and to changes in unconditional correlations consistent with what documented in the U.S. between the pre- and post-1984 periods. (C) 2013 Elsevier B.V. All rights reserved
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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