Search results for "improvement"

Las representaciones del saber académico: Aportaciones desde la Geografía Escolar

2019

When we talk with basic education´s teachers there is an impression in the case of learning Social Sciences, and Geography in particular that these sciences are not useful for the explanation of socio-environmental and daily problems. In this research, improvement proposals are sought so that students are motivated to learn about these problems. Based on two case studies such as flood risks (and their relationship with climate change) and the problems of the rural areas, the possibilities of combining motivation for learning close to personal emotions and with their own rigor have been explored of the conceptual explanation. To validate these results, quantitative and qualitative research t…

Super resolved optical system for objects with finite sizes using circular gratings

2015

We present a real time all optical super resolution method for exceeding the diffraction limit of an imaging system which has a circular aperture. The resolution improvement is obtained using two fixed circular gratings which are placed in predetermined positions. The circular gratings generate synthetic circular duplications of the aperture, thus they are the proper choice for a circular aperture optical system. The method is applicable for both spatially coherent and incoherent illuminations, as well as for white light illumination. The resolution improvement is achieved by limiting the object field of view. The proposed method is presented analytically, demonstrated via numerical simulat…

A Distributed approach to the Remote Control and Programming Improvement.

2006

La compra silenciosa. Arrendamientos, estabilidad y mejoras en la agricultura valenciana de regadío (1850–1930)

2007

Resumen Este articulo analiza como fue posible, en el regadio valenciano, un desarrollo agrario basado en el arrendamiento de pequenas explotaciones. Del estudio de los contratos firmados en la huerta de Gandia se deduce, en primer lugar, que los arrendatarios ocupaban la parcela durante un periodo bastante prolongado de tiempo, que tendio a crecer durante la segunda mitad del siglo XIX; y, en segundo, que a menudo los cultivadores eran indemnizados al finalizar su contrato por las mejoras que habian introducido. A largo plazo, todo ello consolido su posicion, porque el cultivador se convirtio en “semipropietario” de hecho de la tierra mejorada. Por su parte, los terratenientes rentistas ob…

Monitoring of education system and the fifteen ages student achievement: analysis in the English-speaking countries with PISA 2009

2013

International audience; Education quality in developed countries is not just a question of public expenditure but is also related to educational policies (Hanushek and Woesmann, 2009). The classical economics theories (market competition) and principal-agent problem theory allow us to study agent's behaviors in education (Plassard and Tran, 2011). English-speaking countries have implemented the most advanced forms of control (for instance the NCLB in 2001 in US, and the Education Reform Act in 1988 in UK). Several studies (Hanushek and Link and Woessmann 2011) show that some kinds of institutional policies in education could have an impact on students achievement. However these studies don'…

Control and design for efficiency improvement of permanent-magnet synchronous motor drives in household appliances

2011

This paper deals with some aspects of efficiency improvement of PMSMD (Permanent Magnet Synchronous Motor Drives). Particularly two aspects are focused: the control algorithm for the PMSMD, which allows to reduce the power losses of the electric drive without penalty on its dynamic performances and the optimization of an IPMSM (Interior Permanent Magnet Synchronous Motor) rotor configuration capable to increase the performances in terms of shaft torque production, limiting at the same time the rotor leakage flux. The loss minimization algorithm is here briefly analyzed, a test bed for experimental validation is presented and the data are analyzed. Experimental tests have been performed aimi…

Spanish Validation of the Leader Empowering Behavior Questionnaire (LEBQ)

2019

The concept of empowering leadership has attracted widespread academic and practical interest and different questionnaires have been developed to measure it. However, there are no instruments to measure empowering leadership in the Spanish language. This article presents the translation, adaptation, and validation of a scale to measure this construct. In addition, it analyzes the relationship between managers’ empowering leadership and employees’ job satisfaction. In turn, the study analyzes whether employees who participate in a greater number of continuous improvement programs have supervisors who favor more empowering behaviors. A total of 739 participants with various occupations from d…

Multi-rate PID Controller for a Networked Control System

2007

In networked control systems several devices (controller, process and others) share a common communication bus. This feature can suppose delays when those devices try to transmit information through the unique bus, leading to a non- regular behaviour, that is, different variables are sampled and updated in a non-uniform way along the time. As a result, if the control system is designed by means of classical design techniques, control performance can be degraded, since these techniques used not to consider those delays. In order to undertake this problem, a solution based on a PID controller's parameters readjustment is proposed. This approach permits to retune these parameters depending on …

The impact of Kaizen Events on improving the performance of automotive components' first-tier suppliers

2009

Purpose - The aim of this paper is to explore the possibility of improving production indicators by implementing Kaizen Events. The teams are composed of both managers and operators with the aim of developing and/or implementing improvements in three to five days. Methodology - The empirical research will consists of the description of the results obtained in 11 industrial companies from the automotive components industry. In each company, we have followed up different interventions over a 9-12-month period. Findings - We shall present the initial situation, the activities carried out by the companies and the evolution of manufacturing performance approximately three months after the activi…

The Role of Different Approaches in Inspection Process Improvement

2009

There is a need to better understand improvement of software inspection practices. Typically process improvement is driven by different reference models like CMMI. In the previous work we found that such model based approach alone didn’t provide sufficient support for inspection process improvement. This paper outlines an overall picture of inspection process improvement and four different approaches for it. These approaches are seen as complementary and the focus of the paper is on describing their role in the improvement process.