Search results for "Run"
showing 10 items of 2820 documents
Fungal genes related to calcium homeostasis and signalling are upregulated in symbiotic arbuscular mycorrhiza interactions
2012
Fluctuations in intracellular calcium levels generate signalling events and regulate different cellular processes. Whilst the implication of Ca2+ in plant responses during arbuscular mycorrhiza (AM) interactions is well documented, nothing is known about the regulation or role of this secondary messenger in the fungal symbiont. The spatio-temporal expression pattern of putatively Ca2+-related genes of Glomus intraradices BEG141 encoding five proteins involved in membrane transport and one nuclear protein kinase, was investigated during the AM symbiosis. Expression profiles related to successful colonization of host roots were observed in interactions of G. intraradices with roots of wild-ty…
Surface soil humidity retrieval by means of a semi-empirical coupled SAR model
2010
In the last years, the availability of new technologies of Earth Observation encouraged researches to use integrated approaches for environmental monitoring. Even for agro-hydrological applications, remotely sensed data are available on wide areas allowing the retrieval of cost-effective and representative estimation of high spatial and temporal variability of the soil-vegetation system variables. In particular, soil water content plays an important role determining the partition of precipitation between surface runoff and infiltration and, moreover, influences the distribution of the incoming radiation between latent and sensible heat flux. As a consequence, distributed soil water content …
Use of large Acacia trees by the cavity dwelling Black-tailed Tree Rat in the Southern Kalahari
2006
Recent extensive harvesting of large, often dead Acacia trees in arid savanna of southern Africa is cause for concern about the conservation status of the arid savanna and its animal community. We mapped vegetation and nests of the Black-tailed Tree Rat Thallomys nigricauda to assess the extent to which the rats depend on particular tree species and on the existence of dead, standing trees. The study was conducted in continuous Acacia woodland on the southern and eastern edge of the Kalahari, South Africa. Trees in which there were tree rat nests were compared with trees of similar size and vigour to identify the characteristics of nest sites. Spatial analysis of tree rat distribution was c…
Climatic Characterization and Phenology of Local Peach Genotypes in the Udzungwa Uplands of Tanzania
2014
The phenology of two local peach genotypes was studied to verify whether peaches can be produced in the Tanzanian uplands. Observations were conducted on trees of one early- and one late-ripening peach genotype in 2010 and 2011. Temperature trends were reconstructed and three chilling estimation models were tested. The two peach genotypes differed for timing of flower and leaf bud-break. Common symptoms of insufficient chilling (presence of numerous stages at a specific date and about 20% of undeveloped flower buds) were observed in the late genotype. Both Utah and Dynamic models indicated low chilling accumulation, lower than the Mean Temperature model in most cases. This is inconsistent w…
Twenty Years of Basic Vocational Education Provision in Spain: Changes and Trends
2015
International journal for research in vocational education and training 2 (2015) 2, S. 137-151
Potential Emigration of Latvian Labour Force After Joining the EU and its Impact on Latvian Labour Market
2003
This paper uses empirical evidence from several sources to shed light on patterns of mobility of Latvian labour force during the transition period as well as in the years to come. Updated inter-regional migration rates show that Latvian population is relatively mobile compared to some other European nations. Other things equal, during the transition period people were more likely to leave districts with low wage levels and to enter the ones where earnings are higher, despite many countervailing factors; outflow rates tended to be larger from high unemployment regions. Analysis of individual migration decisions made in 1989-1999 and migration plans for 1999-2002 confirms significance of econ…
Stock earnings and bond yields in the US 1871–2017 : The story of a changing relationship
2021
Abstract Using historical data spanning almost 150 years, we examine whether there is a long-run equilibrium relationship between the stock's earnings and bond yields. The novelty of our econometric methodology consists in using a vector error correction model where we allow multiple structural breaks in the equilibrium relationship. The results of our analysis suggest the existence of an equilibrium relationship over 1871–1932 and 1958–2017. On the two historical segments, our analysis finds that the stock's earnings yield followed the bond yield in both the short run and long run, but not the other way around. Perhaps the most important and surprising finding of our empirical study is tha…
Short-Run Dynamics of the Trade Balance in the EMU-12 Countries
2016
During the pre-EMU period real effective exchange rate or domestic and foreign GDP per capita growth rate differential Granger-caused aggregate trade balance in most of the EMU-12 countries. However, our data-driven paper provides evidence that during the EMU period neither the growth differentials nor the CPI-based real effective exchange rates have Granger-caused the aggregate trade balances. When we decompose the aggregate trade balances into the intra balances (trade balance vis-a-vis the euro area) and the extra balances (trade balance vis-a-vis the rest of the world), we find that typically the change in the dynamics of the aggregate trade balance resulted from a change in the dynamic…
Substituting a substitute currency
2008
Abstract This study evaluates the dynamics between the dollar and euro balances in the Estonian economy. The focus is to apply the traditional currency substitution model to the substitution of the substitute currency, the dollar and euro-related foreign currency balances. We find substitution between the dollar and the euro to be asymmetric in the short run. Inertia, irreversibility and ratchet effects favoured the use of the euro as a substitute currency. No significant evidence of asymmetries in the long run was detected. However, in general, a traditional model for currency substitution was capable of explaining the dynamics of the euro and the dollar as substitute foreign currencies.
Regulation of Investments in Infrastructure: The Interplay between Strategic Behaviors and Initial Endowments
2012
This paper explores the dynamic properties of price-based policies in a model of competition between two jurisdictions. Jurisdictions invest over time in infrastructure to increase the quality of the environment, a global public good. They are identical in all respects but one: initial stocks of infrastructure. This is a dynamic type of heterogeneity that disappears in the long run. Therefore, at the steady state, usual intuitions from static settings apply: identical jurisdictions inefficiently underinvest, calling for public subsidies. In the short run, however, counterintuitive properties are established: (i) the evolution of capital stocks can be nonmonotonic and (ii) one jurisdiction c…