Search results for "efficien"

Thermodiffusion motion of electrically charged nanoparticles

2012

AbstractThe present work deals with experimental studies to examine the theoretical model of thermodiffusion of electrically charged nanoparticles. Three different ionic magnetic colloid samples have been synthesized and profoundly analyzed. The theoretical model is a classical one, based on the calculation of the temperature and the electric potential distribution around nanoparticles. The discrepancy between experimental data and theory turns out not to exceed 20%. We focus on applying different approximations between calculated electrical double layer in the theoretical model and experimental determination of the surface charge density of colloidal particles. We assume this is the main r…

Trade-offs or Complements? : Balancing Diversified Stakeholder Expectations, Institutional Pressures, and Functional Demands in the Strategic Managem…

2019

While scholars and practitioners have warned that business schools are losing their edge in creating and disseminating relevant knowledge in the crosscurrent of environmental demands, the management and organization of higher education institutions (HEIs) have been described as “herding cats” and “organized anarchy”. The teaching–research nexus forms the cornerstone of academic organization and has a quintessential role in strategic management. However, despite the growing body of literature on HEIs’ teaching–research nexus, organization, and environmental changes, few studies have examined the interplay of the three. Therefore, this study combines two contingency-theory views to examine th…

Note sull'applicazione del marchio Ecolabel agli edifici

2007

Marsala Wine and Porto Wine, two Important Stories and two Great Wines in Comparison. The Current Market Situation and Opportunities

2012

Introduction Marsala wine is the oldest of the Sicilian wines and it takes its name from the little town where it is produced. It is one of the most famous fortified wines in the world thanks to its organoleptic qualities and its incredible versatility. Despite its ancient origin and its fame, which led this wine to be known all over the world, Marsala wine is for several years in a decline phase. Porto wine, has always been a true symbol of Portugal, is also very famous worldwide for centuries, it is obtained from different varieties of grapes grown in the Douro Valley and then it is aged in wooden barrels at the cellars of the Oporto City where it was then shipped to be exported all over …

Unit 2: the Markowitz portfolio selection model. parte teoría

2021

Se introduce el modelo de Markowitz y la selección de carteras. Además, se explican las carteras eficientes.

An off-line ion guide quadrupole mass spectrometer system

2017

Off-line ioniohjain kvadrupolimassaspektrometri systeemi. Uuden erillisen ioniohjain-kvadrupolimassaspektrometri (IGQMS) -systeemin käyttöönotto on esitetty tässä työssä. Laitteisto on kehitetty uusien tekniikoiden testaamiseen ja kehittämiseen IGISOL–laitoksella. Työssä on tutkittu laitteiston differentiaalista pumpaussysteemiä ja laitteiston etuosan kuljetustehokkuutta käyttäen 223Ra alfa-rekyylilähdettä. Painemittausten tulokset eri parametreilla ovat esitetty. Kaasuohjaimen käyttöpainealue on mitattu olevan 1 ja 700 mbar:n välillä pitäen käyttöpaineen QMS kammiossa, ja skimmer-systeemin läpäisytehokkuus olevan lähellä 100 %. The commissioning of a new off-line ion guide quadrupole mass …

The Material Resources Using Efficiency in Polish Public Hospitals

2017

Within many health care systems worldwide, increased attention is being focused on resources management. Specifically, resources are one of three principle health system inputs. Resources are the basis for developing the capabilities and competences of public hospitals. The resources protect functioning of public hospitals, at the same time determining the efficiency achievement of the objectives - they are the basis for their efficiency and competitiveness. The article is focused on an identification of spatio-temporal diversification of material resources using efficiency in Polish public hospitals. The data collection was achieved through secondary sources such as The Ministry of Health …

Industrial symbiosis for increasing the efficiency in the use of materials and energy

2015

In industrial ecosystems efficiency and optimization of resources and energy, waste minimization and enhancement of the products represent an important strategy in a perspective of circular economy. From this comes the concept of industrial metabolism, intended as the whole process that includes resource fluxes through the industrial systems, their transformation and finally their disposal in minimum percentage, as waste. Currently Industrial Ecology (EI) includes all those multidisciplinary contributions for the eco-optimization of the relationship between industry and the environment as a further step forward in the concept of sustainable development. The industrial symbiosis, which repre…

Deflation-Corrected Estimators of Reliability

2022

Underestimation of reliability is discussed from the viewpoint of deflation in estimates of reliability caused by artificial systematic technical or mechanical error in the estimates of correlation (MEC). Most traditional estimators of reliability embed product–moment correlation coefficient (PMC) in the form of item–score correlation (Rit) or principal component or factor loading (λi). PMC is known to be severely affected by several sources of deflation such as the difficulty level of the item and discrepancy of the scales of the variables of interest and, hence, the estimates by Rit and λi are always deflated in the settings related to estimating reliability. As a short-cut to deflation-c…

Diverse societies are more productive: a lesson from ants

2012

The fitness consequences of animal personalities (also known as behavioural syndromes) have recently been studied in several solitary species. However, the adaptive significance of collective personalities in social insects and especially of behavioural variation among group members remains largely unexplored. Although intracolonial behavioural variation is an important component of division of labour, and as such a key feature for the success of societies, empirical links between behavioural variation and fitness are scarce. We investigated aggression, exploration and brood care behaviour in Temnothorax longispinosus ant colonies. We focused on two distinct aspects: intercolonial variabil…