Search results for "Forma"
showing 10 items of 34540 documents
Circular economy and environmental protection
2022
<abstract> <p>The circular economy represents a form of corporate production with respect to environmental resources. In the past, these production systems were widespread on the basis of the non-removability of the production factors. The advent of economic growth, in capitalist economies, has led to the deconstruction of production cycles resulting to a food product being produced in one part of the world, whilst the raw materials and processing phases are carried out in several parts of the world, due to the low production costs there. While these economic systems, on the one hand, have led to a growth in the global economic system, on the other hand they have determined the …
Ympäristövirkamies viestijänä : vuorovaikutuksen edellytykset kansalais- ja tietoyhteiskunnassa
2002
Challenges to the development of energy performance measurement : a systems thinking approach
2016
Growing global energy consumption and its consequent hindrance to sus-tainable development poses one of the greatest challenges of today. Impro-vement of the end-use energy efficiency is commonly regarded as one of the most basic and significant countermeasures for curbing the rising energy needs. However, it seems that the progress of end-use energy management is currently hindered due to the complexities involved in the measurement and management of energy efficiency. In essence, the lack of appropriate energy performance metrics constitute a gap between the current organizational needs and scientific literature. Furthermore, the current scientific debate has questioned whether ener-gy ef…
Limits to CO2-Neutrality of Burning Wood. (Review)
2016
Abstract Consumption of wood as a source of energy is discussed with respect to efficiency and restraints to ensure sustainability of the environment on the grounds of a simple analytical model describing dynamics of biomass accumulation in forest stands – a particular case of the well-known empirical Richards’ equation. Amounts of wood harvested under conditions of maximum productivity of forest land are presented in units normalised with respect to the maximum of the mean annual increment and used to determine the limits of CO2-neutrality. The ecological “footprint” defined by the area of growing stands necessary to absorb the excess amount of CO2 annually released from burning biomass is…
Territorial Intelligence and Governance.
2007
International audience; As with European experiments, in various regions in France, territorial intelligence projects have been initiated since 2003. (see the regions of Lower Normandy, Lorraine, Réunion Island, the Aquitaine region, etc.).The objective of these is to gather and exploit information which is not confined to particular sectors and the collective processing of which can contribute to durable development. Apart from institutions, civil society and the inhabitants of the territory, it is observed that companies and in particular small and medium sized enterprises are natural partners who show interest in such initiatives. Both the different economic chains and the participating …
Implementation techniques for the lattice Boltzmann method
2010
EFFICACIA DI DISPOSITIVI FORMATIVI ELABORATIVO-RIFLESSIVI IN INTERVENTI ORIENTATI ALLO SVILUPPO DELL’IDENTITÀ PROFESSIONALE IN STUDENTI
2013
Introduzione. All’interno di un progetto relativo alla costruzione di un modello psicosociale della qualità universitaria, il contributo si centra sulla verifica di efficacia di dispositivi formativi riflessivi atti a consentire agli studenti il riconoscimento e lo sviluppo virtuoso dei loro modelli di identità, così da facilitare la costruzione di rappresentazioni di ruolo sulle quali fondare competenze idonee a dialogare con la mutevolezza, ormai strutturale, dei contesti e degli utenti delle professioni di aiuto. Obiettivi e metodi I dispositivi utilizzati, gruppi semi-direttivi di discussione, sono stati finalizzati alla esplorazione e trasformazione in chiave meno idealizzante delle ra…
Control of the Development of Swirling Airflow Dynamics and Its Impact on Biomass Combustion Characteristics
2017
Abstract The development of the swirling flame flow field and gasification/ combustion dynamics at thermo-chemical conversion of biomass pellets has experimentally been studied using a pilot device, which combines a biomass gasifier and combustor by varying the inlet conditions of the fuel-air mixture into the combustor. Experimental modelling of the formation of the cold nonreacting swirling airflow field above the inlet nozzle of the combustor and the upstream flow formation below the inlet nozzle has been carried out to assess the influence of the inlet nozzle diameter, as well primary and secondary air supply rates on the upstream flow formation and air swirl intensity, which is highly …
Improving Energy Expenditure Estimation in Wrist-Worn Wearables by Augmenting Heart Rate Data With Heat Flux Measurement
2021
Wearable electronics are often used for estimating the energy expenditure of the user based on heart rate measurement. While heart rate is a good predictor of calorie consumption at high intensities, it is less precise at low intensity levels, which translates into inaccurate results when estimating daily net energy expenditure. In this study, heart rate measurement was augmented with heat flux (HF) measurement, a form of direct calorimetry. A physical exercise test on a group of 15 people showed that HF measurement can improve the accuracy of calorie consumption estimates especially during rest and low-intensity activity when used in conjunction with heart rate information and vital backgr…