Search results for "medium"
showing 10 items of 3746 documents
Business intelligence requirements in small sized enterprises
2016
Pienet ja keskisuuret yritykset keräävät nykyisin suuren määrän tietoa ja ovat kiinnostuneet Business Intelligencestä (BI), liiketoimintatiedon hallinnasta, pärjätäkseen kilpailussa liiketoimintaympäristössä. PK-yritykset ovat merkittäviä paikallisessa, kansallisessa ja jopa globaalissa mittakaavassa, sillä ne muodostavat ison osan taloudesta. Siitä huolimatta on tutkittu hyvin vähän sitä, minkälaisia vaatimuksia ja tarpeita näillä yrityksillä on BI:tä kohtaan. Tämän Pro gradu -tutkimuksen tavoitteena on selvittää näitä vaatimuksia kvalitatiivisessa tutkimuksessa teema- ja puolistrukturoidulla haastatteluilla. Yhdistävä tekijä BI-termistössä ja näkökulmissa on, se että kaikissa määrityksiss…
Environmental Management Systems (Ems) - Control Instrument of the Impact of the Organization Activities on the Environment
2015
Abstract Due to the ability to create and use technology, the human being has found various ways to transform the resources of the Earth in all sorts of new materials, equipment and energy sources. At least since the last industrial revolution until now, each generation has added more technology to the received legacy, but at the same time, left the planet in a far more degraded state than the inherited condition. Within these changes, small and medium enterprises (SME) in their capacity as pillars of the economic development of a nation, have been compelled to change their previous strategies. Implementing an Environmental Management Systems (EMS) can be seen as the only way to connect the…
Les déterminants de la complexité des systèmes d’information comptables des dirigeants de PME : contingences culturelles et endogénéité
2018
Le premier objectif est d’étudier le lien entre les dimensions de la culture nationale et la complexité des systèmes d’information comptables (SIC) des dirigeants de PME. Le second est de contribuer au débat sur la présence potentielle de biais d’endogénéité dans les précédentes études réalisées sur le thème. Une régression multiple et un test d’Hausman ont été mobilisés en utilisant les réponses de 276 dirigeants de PME françaises, tunisiennes et syriennes. Les quatre dimensions de la culture proposées par Hofstede sont des déterminants significatifs de la complexité des SIC. Le test d’Hausman révèle que l’existence d’endogénéité est peu plausible.
: Difficulties ans risks of interSME cooperation : solutions provided by private-equity firms
2016
L’article analyse les difficultés et risques auxquels font face les petites et moyennes entreprises (PME) lors de la formation de coopérations interfirmes, et les rôles joués par les sociétés de capital-investissement dans leur diminution. Les PME font principalement face à une asymétrie informationnelle et une incertitude accrues en comparaison aux entreprises plus grandes. Les sociétés de capital-investissement permettent de réduire ces deux facteurs et d’instaurer une situation de confiance entre les futurs cocontractants, ce qui évite l’échec de la transaction. Une étude de cas multiples à visée infirmationniste menée sur le marché français du capital-investissement détaille ces princip…
TCO/Ag/TCO transparent electrodes for solar cells application
2014
Among transparent electrodes, transparent conductive oxides (TCO)/metal/TCO structures can achieve optical and electrical performances comparable to, or better than, single TCO layers and very thin metallic films. In this work, we report on thin multilayers based on aluminum zinc oxide (AZO), indium tin oxide (ITO) and Ag deposited by RF magnetron sputtering on soda lime glass at room temperature. The TCO/Ag/TCO structures with thicknesses of about 50/10/50 nm were deposited with all combinations of AZO and ITO as top and bottom layers. While the electrical conductivity is dominated by the Ag intralayer irrespective of the TCO nature, the optical transmissions show a dependence on the natur…
Effect of postbleaching application of an antioxidant on enamel bond strength of three different adhesives
2010
Objectives: The aim of this study was to compare the shear bond strength (sbs) of three different adhesives on bleached enamel immmmediately after bleaching, bleached/delayed for 1 week, and bleached/applied antioxidizing agent. Study Design: The enamel surfaces of 144 freshly extracted incisors without any caries and restorations were flattened and divided into 12 groups. The following adhesives were investigated: Optibond FL (OFL) (three-step etch&rinse), Optibond Solo Plus (OSP) (two-step etch&rinse), Optibond All-in-One (OA) (one-step self-etch), (Kerr, Orange, USASA). Unbleached enamel groups were prepared as negative controls. The remainder surfaces were bleached with 20% Opalescent P…
Effect of antioxidants on the shear bond strength of composite resin to enamel following extra-coronal bleaching
2019
Background Recently patients need faster treatments, and delaying restoration is not possible following bleaching treatment. The purpose of this study was to determine the effect of antioxidants, namely 10% sodium ascorbate, 10% alpha-tocopherol, 10% green tea and 10% Aloe vera extract on the shear bond strength of composite resin to enamel following extra-coronal bleaching using 40% hydrogen peroxide. Material and Methods Seventy premolars were randomly assigned into 7 groups of 10 each. Group 1: bleaching treatment and no antioxidants application. Group 2: composite was built-up immediately after bleaching. Group 3: bleached specimens received composite build-up delayed by 2 weeks. Group …
Effect of sodium bicarbonate treatment on mechanical properties of flax-reinforced epoxy composite materials
2017
This paper deals with the evaluation of the effect of an eco-friendly and cost-effective surface treatment based on the use of sodium bicarbonate on the mechanical properties of flax-reinforced epoxy composites. To this aim, unidirectional fabrics were soaked for five days in 5 and 10% in weight of sodium bicarbonate solution at 25℃. Quasi-static and dynamic mechanical tests were performed and the fracture surfaces of the composites were analyzed through scanning electron microscopy. Results evidenced that this treatment improves the fiber–matrix adhesion thus increasing the performances of the composites. Treating the fabrics with 10% w/w of bicarbonate solution leads to improvements of ∼…
Enhanced catalytic electrochemical reduction of dissolved oxygen with ultracleancucurbituril[7]-capped gold nanoparticles
2014
Gold nanoparticles capped with cucurbituril[7] have been prepared in the absence of metallic cations and organic ligands. Remarkably, these nanohybrids encapsulate dissolved oxygen and are highly active in electrochemical reduction. The effect of the presence of sodium and ammonium salts on this catalysed process is also analysed.
Modification of the Selectivity Properties of Tubular Ceramic Membranes after Alkaline Treatment
2017
International audience; This work focuses on the selectivity modification of ceramic membranes after a mild alkaline treatment. Filtration of pure saltwater solutions was carried out with commercial titania membranes before and after the treatment. After treatment, the rejection of NaF significantly decreased, while the rejection of NaCl and NaBr increased. Additionally, NaI and Na 2 SO 4 remained close to zero. Pore size and electrical charge being almost unchanged, only significant modifications in the dielectric effects can explain this modification of selectivity. Therefore, the surface chemistry and the interaction (nature and magnitude) with the solvent and with the species present in…