Search results for "strategie"

DSC: software tool for simulation-based design of control strategies applied to wastewater treatment plants.

2011

This paper presents a computer tool called DSC (Simulation based Controllers Design) that enables an easy design of control systems and strategies applied to wastewater treatment plants. Although the control systems are developed and evaluated by simulation, this tool aims to facilitate the direct implementation of the designed control system to the PC of the full-scale WWTP (wastewater treatment plants). The designed control system can be programmed in a dedicated control application and can be connected to either the simulation software or the SCADA of the plant. To this end, the developed DSC incorporates an OPC server (OLE for process control) which facilitates an open-standard communic…

Interior permanent magnet synchronous motors: Impact of the variability of the parameters on their efficiency

2016

In the scientific literature, various authors presented different control strategies aimed to increase the efficiency of the interior permanent magnet synchronous motors. These strategies, starting from a well-known mathematical model of the dynamic behaviour of the motor, are able to reduce the power losses acting on the magnetizing component of the stator current. However, none of the proposed approaches takes into account that, varying the working conditions of the motor, also the values of the parameters, which have an impact on the power losses, can vary. In this paper, therefore, starting from an accurate measurement of the motor characteristics for various values of speed and load, w…

Problem-solving mechanisms in information exchange dialogues with English as a lingua franca

2005

Revista electrónica de investigación y evaluación educativa

2015

El proceso de alfabetización académica presenta en el sistema universitario español numerosas deficiencias en nuestros días, lo que es especialmente preocupante en el caso de los futuros maestros de Educación Infantil y Educación Primaria, dada la influencia que este colectivo tendrá en la alfabetización de los alumnos en los primeros años de escolarización. Este estudio trata de determinar qué variables definen la alfabetización académica de los estudiantes universitarios y qué prácticas docentes y discentes pueden ayudar a explicarla. Un “Cuestionario sobre hábitos lectores y escritores” fue aplicado a una población de 513 estudiantes del Grado de Magisterio de Educación Infantil y Primar…

La violencia en espacios públicos en adolescentes en la comunidad valenciana

2013

[EN] The aim of our research is to know statistically prevelancia and types of aggressive behavior against school, but in public spaces (on the way from home to school / college, and college / school to home), while there is own voice to the school (victims and perpetrators) with what we understand we study the problem from a new perspective. The sample is representative of the Valencia of the total school population in this community among adolescents between 11 and 16 years.The analysis of the results was carried out at various levels of analysis: on a first level, statistical techniques have been used with traditional indicators (means, percentages, etc.). To allow description and compar…

The resilience of rural Ethiopian livelihoods : a case study from Hararghe zone, Eastern Ethiopia

2011

The purpose of this thesis was to examine the resilience and sustainability of rural Ethiopian livelihoods. The resilience and sustainability of livelihoods were studied in framework of food security. Preventing, coping and recovering from the shocks and stresses, in this case from drought and food insecurity, form an essential part of resilience and sustainability and therefore preventing and coping strategies were emphasized in this study. Also the effectiveness of the external aid was touched in empirical data because of its essential existence in the studied villages. The empirical data was gathered by interviewing people living in six rural villages in Hararghe zone, Eastern Ethiopia. …

Dalla periferia al centro: I Notarbartolo duchi di Villarosa (secoli XVII-XVIII)

2012

Nella seconda metà del Seicento i Notarbartolo, grazie alle attività economiche e alle alleanze matrimoniali portate avanti da Francesco senior (1630-1704) e dai suoi due figli, Gaetano (1655-1705) e Placido senior (1657-1701), costruiscono il nucleo del proprio patrimonio fondiario e passano dalla condizione di possidenti e benestanti di Caltanissetta, alla condizione di feudatari di provincia insigniti di un titolo baronale e in possesso di tre feudi di cospicua estensione. La politica matrimoniale adottata mira all’accrescimento del patrimonio e del potere, attraverso la creazione di una rete di alleanze; talvolta i matrimoni garantiscono, tramite l’apporto delle doti, la solidità econom…

Mediation process: increasing language awareness and developing communication skills

2014

European countries have known mediation for a long time. Notwithstanding that, various approaches and rules of mediation developed in different places all over Europe and Member States still do not have regulated mediation at all (Espluques et al. 2012). The European Union has tackled this problem with the aim to change mediation into a flexible and useful tool for the parties to solve their disputes in civil and commercial matters. The objective of this paper is to provide first a general overview of mediation process on the basis of the Directive 2008/52/EC of the European Parliament and the Council on certain aspects of mediation in civil and commercial matters. Then, attention will be f…

FEBBRE TIFOIDE

2013

Active and inactive quarantine in epidemic spreading on adaptive activity-driven networks

2020

We consider an epidemic process on adaptive activity-driven temporal networks, with adaptive behaviour modelled as a change in activity and attractiveness due to infection. By using a mean-field approach, we derive an analytical estimate of the epidemic threshold for SIS and SIR epidemic models for a general adaptive strategy, which strongly depends on the correlations between activity and attractiveness in the susceptible and infected states. We focus on strong social distancing, implementing two types of quarantine inspired by recent real case studies: an active quarantine, in which the population compensates the loss of links rewiring the ineffective connections towards non-quarantining …