Search results for "CEM"

Notice of Violation of IEEE Publication Principles: Reinforcement learning for P2P searching

2005

For a peer-to-peer (P2P) system holding a massive amount of data, an efficient and scalable search for resource sharing is a key determinant to its practical usage. Unstructured P2P networks avoid the limitations of centralized systems and the drawbacks of a highly structured approach, because they impose few constraints on topology and data placement, and they support highly versatile search mechanisms. However their search algorithms are usually based on simple flooding schemes, showing severe inefficiencies. In this paper, to address this major limitation, we propose and evaluate the adoption of a local adaptive routing protocol. The routing algorithm adopts a simple reinforcement learni…

Effect of two prophylaxis methods on adherence of Streptococcus mutans to microfilled composite resin and giomer surfaces

2010

Objectives: Surface attributes of a restoration play an important role in adherence of plaque bacteria. Prophylaxis methods may be involved in modification of or damaging the restoration surface. The aim of the present study was to evaluate the effect of two prophylaxis methods on adherence of Streptococcus mutans to the surface of two restorative materials. Study design: A total of 60 specimens were prepared from each material; a microfilled composite resin (HelioProgress) and a giomer (Beautifil II). For each material, the specimens were randomly divided into three groups (n=20). Group 1: no prophylaxis treatment (control); Group 2: prophylaxis with pumice and rubber cup; Group 3: prophyl…

Compétence des juridictions françaises et groupes de sociétés : entre litispendance et co-emploi

2015

International audience; Note sous Cour de cassation (soc.), 28 janvier 2015, n° 13-22.994 (FS-P+B), Sté Comilog International c/ A.

Les vies étudiantes : tendances et inégalités

2016

National audience; On recense aujourd'hui plus de 2,4 millions d'étudiants en France. Une population dont les effectifs ne cessent de croître et qui se révèle être de plus en plus diversifiée. Se référer à « l'étudiant moyen » n'a donc pas plus de sens aujourd'hui qu'il n'en avait lors de la mise en place de la première enquête Conditions de vie des étudiants en 1994. Il en est de même de la vie étudiante qu'il est difficile de réduire à quelques clichés. Le seul fait d'être étudiant est loin d'homogénéiser les conditions de vie d'un public aux caractéristiques, aux expériences et aux attentes de plus en plus diversifiées. Le sexe, l'âge, la formation suivie, le parcours antérieur, la situa…

Sabratha. A guide to the studies and investigations of the past 50 years

2017

This volume, not a simple archaeological guide, adds to the description of the monuments and museums of Sabratha also some reflections on general themes as sculpture, urban developement, religious architecture, civic and domestic buildings, paintings and mosaics of the punico-hellenistic, Roman and Christian Sabratha. It also gives account of the researches of the Archaeological Mission of the Palermo University, directed by the late Professor Nicola Bonacasa, and it includes the contribution of external scholars, which very recently published some monuments of great interest.

Diversity of Saccharomyces cerevisiae strains associated to racemes of Grillo grape variety

2020

ABSTRACT The most important oenological characteristics of high-quality sparkling wines are high content of acidity and low pH. Racemes are late-maturing grapes of Grillo variety characterized by low pH and high content of tartaric and malic acids and, due to their intrinsic characteristics, might represent an interesting technological solution to increase acid quality of base sparkling wine. To this purpose, the use of yeasts able to ferment grape must at very low pH is mandatory for the success of the process. In this work, 261 Saccharomyces cerevisiae isolated from spontaneous vinifications of Grillo grape racemes were subject to intraspecific characterization by interdelta analysis whic…

Effects of ions-releasing restorative materials on the dentine bonding longevity of modern universal adhesives after load-cycle and prolonged artific…

2019

This study aimed at evaluating the microtensile bond strength (MTBS) and fractographic features of dentine-bonded specimens created using universal adhesives applied in etch-and-rinse (ER) or self-etching (SE) mode in combination with modern ion-releasing resin-modified glass-ionomer cement (RMGIC)-based materials after load cycling and artificial saliva aging. Two universal adhesives (FTB: Futurabond M+, VOCO, Germany

Effect of saliva contamination on cementation of orthodontic brackets using different adhesive systems

2017

Background The enamel condition and the quality of surface are points that need to be considered for achieving optimal efficiency in the treatment with orthodontic brackets. The aim of this study was to assess the immediate bond strength of metallic brackets cemented to dental. Material and Methods Forty human premolars were double-sectioned, placed in PVC matrices and randomly divided into 10 groups (n=8). They received artificial saliva contamination before or after the application of adhesive systems, except for the control groups. The metallic brackets were cemented using two orthodontic cements (Transbond™ Plus Color Change, 3M Unitek e Transbond™ XT Light, 3M Unitek). The specimens we…

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In vitro perception of low-contrast features in digital, film, and digitized dental radiographs: A receiver operating characteristic analysis

2005

Objective To compare experimentally the image quality of charged-coupled device (CCD)-based digital, flatbed scanner digitized, and dental film radiographs. Study design High-contrast standardized radiographs of an aluminum step wedge containing boreholes were obtained on dental radiographic film (F) and a CCD receptor (D). Digitization (S) was done with a flatbed scanner. Each radiograph was separated into 23 single images, 18 of which showed a dark spot. Thirty observers indicated their confidence on the visibility of the spots for a receiver operating characteristic (ROC) analysis. Results Mean Az values (area beneath the ROC curves) differed significantly (P < .05), being highest for D …