Search results for "productivity."
showing 10 items of 557 documents
Trophic ecology of the swimming crab Polybius henslowii Leach, 1820 in Galician and Cantabrian Seas: Influences of natural variability and the Presti…
2008
9 pages, 9 figures, 2 tables.-- Printed version published Nov 15, 2008.
The impact of the Little ice age on coccolithophores in the central Mediterranea Sea
2010
The Little Ice Age (LIA) is the last episode of a series of Holocene climatic anomalies. There is still little knowledge on the response of the marine environment to the pronounced cooling of the LIA and to the transition towards the 20th century global warming. Here we present decadal-scale coccolithophore data from four short cores recovered from the central Mediterranean Sea (northern Sicily Channel and Tyrrhenian Sea), which on the basis of <sup>210</sup>Pb activity span the last 200–350 years. The lowermost part of the record of one of the cores from the Sicily Channel, Station 407, which extends down to 1650 AD, is characterized by drastic changes in productivity. Specific…
Regulation and efficiency: the case of European railways
2001
Abstract During the long period of regulation of the railway system in Europe (1950s–1990s) the companies notably improved their levels of productivity. However, parallel to this, the state of their financial accounts also significantly worsened. In order to explain this fact we have estimated both cost and revenue frontier functions, calculating the losses associated with both cost and revenue inefficiencies as well as inefficiencies on the cost side. The results obtained show the existence of significant potential losses of revenue, which can be explained above all by the strong policy of regulation and intervention reigning in this period. A better commercial policy and a supply adapted …
The Global Research Collaboration of Network Meta-Analysis: A Social Network Analysis
2016
et al.
Examining Sources of Farmers’ Knowledge as a Premise Behind Realization of the Smart Village Conception. A Case Study of Opole Region
2019
The aim of the study is to point to the need of doing research on the system of agricultural knowledge and information as a premise behind realization of the conception of smart village in the territorial framework. Accepting the assumption that intelligent agriculture lies at the foundation of transformation of rural areas, the author indicates the role of the system of agricultural knowledge and information in the process of modernization of agricultural holdings. In the article, questionnaire-based survey research was used in relation to the sustainable development of agriculture in Opole Region. In order to assess the level of adaptation of agricultural holdings to economy based on know…
Ecological Efficiency of Voluntary Conservation of Boreal-Forest Biodiversity
2008
Current networks of protected areas are biased in many countries toward landscapes of low productivity. Voluntary conservation incentives have been suggested as a socially acceptable way to supplement existing networks with more productive, privately owned areas of high priority for nature conservation. The limited resources committed to nature conservation demand cost-efficiency. Efficiency, however, depends not only on costs incurred to society from alternative ways of maintaining biodiversity but also on ecological values that can be captured. We examined the ecological efficiency of the new market-based voluntary program to preserve forest habitats on private land in southwestern Finlan…
Estimation of recombinant protein production in Pichia pastoris base don a constraint-based model
2012
[EN] A previously validated constraint based model and possibilistic MFA have been used to design a simple estimator of protein production rate in Pichia pastoris cultures. A structured model of the yeast P. pastoris metabolism is used to predict the balance of key energetic equivalents such as ATP from available measurements, mainly substrate consumption, gases exchange rates and biomass specific growth. It has been shown that ATP flux can be related to biomass growth and protein productivity specific rates by linear regression. Cross-validation has been applied for robust parameter fitting on the basis of chemostat, steady-state experimental conditions. In this way, protein estimation can…
Search, Nash bargaining and rule-of-thumb consumers
2011
Abstract This paper analyses the effects of introducing two typical Keynesian features, namely rule-of-thumb (RoT) consumers and consumption habits, into a standard labour market search model. RoT consumers use the margin that hours and wage negotiation provides them to improve their lifetime utility, by narrowing the gap in utility with respect to Ricardian consumers. This margin for intertemporal optimisation has not been studied yet, because this class of restricted agents has been mainly used in models with no equilibrium unemployment. Our approach allows for a deeper study of the effects of shocks on vacancies, unemployment, hours, wages and how they interact. As habits increase, RoT c…
Biomass, litterfall and nutrient content in Castanea sativa coppice stands of southern Europe
1996
Les biomasses et les mineralomasses, les retombees de litiere et la restitution au sol de bioelements par leur intermediaire ont ete etudiees dans des peuplements de Castanea sativa Mill en Espagne (province de Salamanque), en Italie (massif de l'Etna) et en France (Cevennes). Les meilleurs correlations et resultats ont ete trouves avec des regressions allometriques de type: Y (biomasse) = aX (diametre tronc a 1,30 m) b . Les parametres des differentes equations de regression sont semblables et tres proches pour les châtaigniers de France et d'Italie. La principale source de differences, au niveau stationnel, resulte de la repartition differente des arbres en fonction des classes de diametr…
Labor Productivity Growth: Disentangling Technology and Capital Accumulation
2014
We adopt a counterfactual approach to decompose labor productivity growth into growth of Technological Productivity (TEP), growth of the capital-labor ratio and growth of Total Factor Productivity (TFP). We bring the decomposition to the data using international countrysectoral information spanning from the 1960s to the 2000s and a nonparametric generalized kernel method, which enables us to estimate the production function allowing for heterogeneity across all relevant dimensions: countries, sectors and time. As well as documenting substantial heterogeneity across countries and sectors, we nd average TEP to account for about 44% of labor productivity growth and TEP gaps with respect to the…