Search results for " impr"
showing 10 items of 877 documents
Anomalous electrical parameters improvement in Ruthenium DSSC
2018
. In this work, we present a series of measurements carried out on Ruthenium-based Dye Sensitized Solar Cells (DSSCs) after the application of different external electrical field values. Such measurements have been performed both in the dark and by illuminating the sample with sunlight emitted by a solar simulator (AM1.5G spectrum with a power irradiance of 1000 W/m2). Our results demonstrate that the initial electrical bias field modifies in both cases the behavior of the cell in terms of an anomalous improvement of the main electrical parameters.
La tipografía en la Plantificación de la imprenta? de Antonio Bordazar y en De numis hebraeosamaritanis, impreso por Benito Monfort: dos paradigmas d…
2018
Building composite indicators in tourism studies: Measurements and applications in tourism destination competitiveness
2017
Abstract Composite indicators are useful tools to synthesize and monitor multidimensional phenomena. The aim of this paper is twofold: to offer the methodological foundations to build composite indicators in tourism and to evaluate a set of currently available composite indicators. Tourism destination competitiveness indicators constitute the object of this contribution. Their definitions, concepts and measures are analyzed and their evaluation is performed through the application of an original protocol. The results highlight that several methodological issues still surround the measurement of destinations competitiveness indicators. This paper provides tourism scholars and practitioners w…
Pd and PdAu on mesoporous silica for methane oxidation: Effect of SO2
2007
Abstract Palladium and gold–palladium catalysts supported on mesoporous silica were prepared by incipient wetness impregnation. They were characterized by XPS, XRD, BET, and FTIR acidity measurements. The activity was tested in the oxidation of methane under lean conditions. The effect of adding SO 2 to the reactant mixture was investigated. Test reactions were consecutively performed to evaluate the thermal stability and poisoning reversibility. The palladium catalyst performed quite well in terms of the light-off temperature ( T 50 300 °C) and SO 2 tolerance. Moreover, the activity, which decreased after a night treatment in SO 2 at 350 °C, was completely recovered in subsequent cycles. …
Hydrodesulfurization cobalt-based catalysts modified by gold
2007
Cobalt catalysts supported on amorphous SiO2 and ordered mesoporous silica (MCM-41) were prepared by incipient wetness impregnation. Gold was added by consecutive impregnation or by co-impregnation. The materials were characterised by XPS, XRD and TPR techniques and evaluated in the hydrodesulfurization (HDS) of thiophene in order to investigate the effect of the noble metal on the structure and on the catalytic behaviour of the supported cobalt. Co/MCM-41 exhibited higher HDS activity and higher stability than the Co/SiO2. Moreover, in contrast to silica case, the gold impregnated MCM-41, produced an enhancement of the cobalt catalytic activity, and this is likely to be related to an incre…
Electronic Conference Proceedings of Sinergie - Sima Management Conference Leveraging intersections in management theory and practice, Palermo, June …
2021
Electronic Conference Proceedings of Sinergie - Sima Management Conference - Extended Abstracts Leveraging intersections in management theory and pra…
2021
La hubris manageriale quale fonte della irresponsabilità d’impresa: uno studio esplorativo
2014
Obiettivo del paper: L’ondata di scandali etici che ha colpito intensamente il mondo delle imprese a partire dalla fine del XX secolo ha fatto emergere l’esigenza di esplorare i meccanismi istituzionali tesi a evitare nuovi casi di corporate social irresponsibility (CSI). S’intende contribuire a tale dibattito introducendo la trappola della hubris manageriale quale determinante della CSI. Metodologia: Esame qualitativo-longitudinale del caso Parmalat nel periodo in cui è stata sotto la guida del suo fondatore Calisto Tanzi (1961-2003). L’analisi del caso segue i criteri scientifici del campionamento teorico, della triangolazione dei fatti e della periodizzazione della narrazione. Risultati:…
Vokālā improvizācija 3. klašu skolēnu iztēles veicināšanai mūzikas stundā
2017
Diplomdarba tēma „Vokālā improvizācija 3. klašu skolēnu iztēles veicināšanai mūzikas stundā”. Diplomdarba pētījuma mērķis ir analizēt teorētisko literatūru par iztēli un improvizāciju, empīriski noteikt vokālās improvizācijas iespējas iztēles veicināšanai mūzikas stundā. Diplomdarbs sastāv no divām nodaļām un nobeiguma. Teorētiskajā daļā tiek dots ieskats par jaunākā skolas vecumposma skolēnu iztēli un improvizāciju, raksturojumu. Pētnieciskajā daļā tika iegūti un apkopoti rezultāti. Diplomdarbs pamatojas uz Latvijas Republikas likumdošanu, MK noteikumiem un citu instanču ieteikumiem, grāmatām, periodiku. Darbā izmantoti pieejamie elektroniskie resursi. Diplomdarba apjoms 41 lappuses, 5 tab…
General coordinates of the relationship between taxation and management
2015
Any modern state is unthinkable without an efficient taxation, without a fiscal field which is perceived as a stimulating factor in the development of the nation. Taking into account that fiscal science has always had a negative perception among taxpayers, through this article we present some aspects of management methods and management techniques that can give essential elements for improving taxation. Using management as art, science and state of mind can strengthen the role that taxation plays in the regulation of economic mechanisms.