6 research outputs found
Etude de l'utilisation de promoteurs de turbulence en ultrafiltration d'huiles solubles
No full textSIGLECNRS T Bordereau / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc
المساعي السياسية والإصلاحية للإمام أبي الوليد الباجي: The political and reformist endeavours of Imam Abū al-Walīd al-Bājī
No full textAfter the fall of the Umayyad Caliphate, the Andalusian Islamic state witnessed a political rupture as a result of chaos, rivalries and sectarian conflicts throughout the fifth century AH corresponding to the eleventh century AD. These dangerous security breakdowns led to the disintegration and division of the Islamic Caliphate in Andalusia into a group of independent kingdoms and small emirates which ultimately found themselves on one hand in permanent wars between them, and on the other in skirmishes with the neighbouring Christian forces. This fact contributed to lack of stability and peace of these lands and the establishment of weak governing systems for a long time. This political situation stressed the worsening of their social conditions and their scientific life. Nevertheless, this situation generated a motivating nostalgia and rage in some scholars and jurists such as Imam Abū al-Walīd al-Bājī who is considered one of the key-figures and scholars of Andalusia. He had a prominent role in pushing forward and reviving scientific life by setting various new foundations in order to reform some fields. His writings were directed for educational purposes. Besides, he included the reform of Islamic jurisprudence, which was aimed primarily for jurists and rulers. Furthermore, some of his writings were sermons and ethical moral instructions for commoners. His endeavours led him to enter the political life as he assumed the judicial profession of a judge, that enabled him to be in more touch with the various kings of sects giving him the chance to advise and guide them. His efforts in that end resulted in seeking to reunite the kings of the sects and their princes under the banner of Islam and unite their forces for the defence of Muslim presence in Andalusia against the Christian threat.After the fall of the Umayyad Caliphate, the Andalusian Islamic state witnessed a political rupture as a result of chaos, rivalries and sectarian conflicts throughout the fifth century AH corresponding to the eleventh century AD. These dangerous security breakdowns led to the disintegration and division of the Islamic Caliphate in Andalusia into a group of independent kingdoms and small emirates which ultimately found themselves on one hand in permanent wars between them, and on the other in skirmishes with the neighbouring Christian forces. This fact contributed to lack of stability and peace of these lands and the establishment of weak governing systems for a long time. This political situation stressed the worsening of their social conditions and their scientific life. Nevertheless, this situation generated a motivating nostalgia and rage in some scholars and jurists such as Imam Abū al-Walīd al-Bājī who is considered one of the key-figures and scholars of Andalusia. He had a prominent role in pushing forward and reviving scientific life by setting various new foundations in order to reform some fields. His writings were directed for educational purposes. Besides, he included the reform of Islamic jurisprudence, which was aimed primarily for jurists and rulers. Furthermore, some of his writings were sermons and ethical moral instructions for commoners. His endeavours led him to enter the political life as he assumed the judicial profession of a judge, that enabled him to be in more touch with the various kings of sects giving him the chance to advise and guide them. His efforts in that end resulted in seeking to reunite the kings of the sects and their princes under the banner of Islam and unite their forces for the defence of Muslim presence in Andalusia against the Christian threat
L'effet d'obstacles sur l'amélioration du refroidissement par film cooling
No full textPlusieurs techniques ont été étudiées afin d’améliorer l’efficacité du refroidissement par film cooling. Une de ces techniques consiste à utiliser des petits obstacles à la sortie des trous d’injection .L’objectif de cette étude est de déterminer numériquement, l’effet de la géométrie et la positon d’obstacle en amant des trous d’injections inclinés de 35°dans le cas de refroidissement d’une plaque plane multi perforée muni d’obstacles . Les résultats ont montré que l’efficacité du refroidissement peut être améliorée de plus de 40% par rapport à un refroidissement sans obstacles. Cependant à faible taux de soufflage sa contribution à l’amélioration du refroidissement en aval du trou d’injection est moins importante à l’égard de celle à portée par film cooling. Les résultats obtenues sont on bon accord avec ceux obtenues expérimentalement
Contribution study of the thermodynamics properties of the ammonia-water mixtures
No full textThe full thermodynamic study of the absorption refrigeration units requires
the knowledge of the thermodynamic properties of the used mixture. The
present work deals with the mathematical modeling of the thermodynamic
properties of ammonia-water mixtures using various models. The presented
model covers high vapor-liquid equilibrium pressures up to 110 [bar] and
temperatures from 230 to 600 [K]. Furthermore, the calculation of the
thermodynamic properties of the ammonia-water mixtures and their pure
components was carried out. The obtained results were compared with results
given in the literature. This shows a good concordance. <br><br><font color="red"><b> This article has been corrected. Link to the correction <u><a href="http://dx.doi.org/10.2298/TSCI180624196E">10.2298/TSCI180624196E</a><u></b></font></jats:p
Broadband and Low-Frequency Acoustic Liner Investigations at NASA and ONERA
No full textInternational audienceNASA and ONERA have explored a number of acoustic liner concepts over the last few decades. This paper begins with a brief review regarding conventional liners as well as the recent implementation of multi-degree-of-freedom liners enabled by embedded mesh caps. Six novel liner concepts are presented, along with the accompanying impedance prediction models used in their design. Each of the NASA concepts is designed to vary the impedance over the surface of the liner in a controlled manner, whereas the ONERA concepts make use of long neck acoustic resonators. Selected results are presented for each of these liners evaluated in the NASA and ONERA test rigs. Finally, a set of aeroacoustic metrics is defined for comparison standardization between conventional and innovative acoustic liners and all the concepts are compared on this basis
THE ROLE OF PERFORMANCE ASSESSMENT IN DEVELOPMENT OF HUMAN RESOURCE AND IN INCOMES OF THE ORGANIZATION
No full textAs a result of changes in human resources approach new forms of Human Resources Management were created, that require increased commitment in human resources in order to achieve the highest possible results in an organization. As the technology advances greatly, there is continuing need for investment in human resources in order to keep up in professional career development and revenues. Such results of human resources results are achieved through the application of positive methods and implementation of continuing education, as a demand and necessity of the global economy or new economy.One of the main roles of human resources is their action as a factor of change, transformation and as the decisive factor in the establishment and development of the organization.The purpose of this article is to analyze the impact of human resource performance and new perspectives on human resource management in public organizations, in order to promote competition in the organization and beyond.This study will treat the of impact of performance evaluation and new perspective aspect in the development of the human resources, identifying human potential in the organization and advance their career with the purpose of further organization development, revenues increase and economic growth of the organization.Topics of study/ research may be of a particular importance for staff who wishes to make changes or to analyze the impact of performance and motivation in the individual and organizational development
