Search results for "DEMAND"
showing 10 items of 759 documents
Chronique Arbitrage
2007
International audience
Schooling Effects and Earnings of French UniversityGraduates : School Quality Matters, but Choice ofDisciplines Matters More
2009
09022 - Actes sur CD-ROM; Our aim in this article is to study the relation between earnings of French universities graduates and some characteristics of their universities. We exploit data from the Céreq's "Génération 98" survey, enriched with information on university characteristics primarily from the ANETES (yearbook of French institutions of higher education). We employ multilevel modeling, enabling us to take advantage of the natural hierarchy in our separate datasets, and thus to identify, and even to measure potential effcts of institutional quality. Since we take into account many individual students characteristics, we are able to obtain an income hierarchy among the diffrent disci…
Observations "économiques" quant à la demande d'éducation
1977
International audience; Ce texte vise à donner le point de vue d'un économiste quant à l'analyse de la demande individuelle d'éducation et à l'explication des structures observées en démographie scolaire à partir d'un raisonnement fondé sur la rationalité du comportement des agents privés dans une situation générale de rareté.
Analyse critique de la "demande d'éducation". L'exemple de l'enseignement supérieur
1979
International audience
Analyse théorique de la demande d'éducation et optimisation de l'investissement éducatif
1973
International audience; Cet article cherche à expliquer la pluralité des comportements individuels en matière d'éducation. Celle-ci est traitée en tant qu'investissement ainsi que dans la théorie du capital humain. Cependant, la valeur de l'investissement n'est pas mesurée de la même façon suivant les caractéristiques socio-économiques du décideur en raison d'une part des imperfections dans le marché du capital et d'autre part, de l'incertitude sur les flux de coûts et des revenus associés au capital humain. En outre, des indicateurs d'efficacité de la planification sont suggérés.
L'excédent de la demande d'éducation dans les pays en développement
1984
Référence interne : 84054
Actor engagement as a base for value co-creation in service ecosystem : case study of future electricity demand-side response service for households
2019
This thesis focuses on exploring the value co-creation in the future electricity demand-side response (DSR) service for households. DSR service is implemented as a cloud service, where high-power home appliances are switched off, if there are consumption overload in the power grid and the flexibility is needed. The service is necessary, especially when the use of electric cars increases. As electricity consumption is expected to increase, it creates challenges for electricity network capacity. Increased production in the near future, as well as moving towards more carbon-neutral production mode, will increase the challenges for the adequacy of electricity. With this service, it is possible …
On the Impact of Heat Pumps Electric Load on the Power Consumption of Lampedusa
2020
The present paper reports the results of a simulation study regarding the impact of the adoption of heat pumps for domestic hot water production in the island of Lampedusa (Italy). In the study, it has been assumed to replace electric storage water heaters with heat pumps at every dwelling of the about four thousand domestic end-users of the island and, in addition, to control the heat pump operation in order to enhance some parameters that characterize the quality of the generation and distribution system of the island (power peak, energy losses and voltage drop). According to the results of the simulations, while the replacement of electric storage water heaters with heat pumps is able to…
Actinide and lanthanide thin-layer developments using a drop-on-demand printing system
2023
Actinide and lanthanide thin layers with specific requirements regarding thickness, homogeneity, chemical purity, mechanical stability, and backing properties are applied in a multitude of physics and chemistry experiments. A novel target preparation method, the so-called “Drop-on-Demand” (DoD) technique, based on a commercial nanoliter (nL) dispenser is applied since a few years in the Nuclear Chemistry unit at Johannes Gutenberg University Mainz. The wetting behaviour of the nL droplets on the substrate’s surface is a key parameter determining the spatial distribution of the deposited material after evaporation. By switching from aqueous to organic solvents as well as by substrate surface…
Ultrasound assisted method to increase soluble chemical oxygen demand (SCOD) of sewage sludge for digestion
2004
The aim of this study was to clarify the possibilities to increase the amount of soluble chemical oxygen demand (SCOD) and methane production of sludge using ultrasound technologies with and without oxidising agents. The study was done using multivariate data analyses. The most important factors affected were discovered. Ultrasonically assisted disintegration increased clearly the amount of SCOD of sludge. Also more methane was produced from treated sludge in anaerobic batch assays compared to the sludge with no ultrasonic treatment. Multivariate data analysis showed that ultrasonic power, dry solid content of sludge (DS), sludge temperature and ultrasonic treatment time have the most signi…