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Search Results: 1 - 10 of 8326 matches for " Fran Crochet "
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The Impact of Digitally Enhanced Reading Interventions on Struggling Readers and Teacher Education Candidates  [PDF]
Cynthia B. Vavasseur, Fran Crochet, Sara Dempster
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.411008
Abstract:
The unprecedented growth of digital literacy has sparked new mandates for Colleges of Teacher Education, challenging faculty to find innovative ways to incorporate digital literacies into curriculum. This research project paired candidates with elementary grade students for reading intervention using technology. The results provided rich descriptions of specific characteristics of the intervention which proved to be beneficial. The mixed method embedded design allowed researchers to collect both qualitative and quantitative data to provide insights into the research questions. Qualitative data showed that candidates felt that the inclusion of technology with reading intervention caused a higher level of engagement from students. Furthermore, quantitative data showed the intervention increased the reading achievement of students in the five areas of effective reading instruction.
The Importance of Teacher's Effectiveness  [PDF]
Elizabeth Block, Fran Crochet, Leslie Jones, Tiffany Papa
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.326173
Abstract: Heightened emphases are on teachers and effective teaching particularly linked to the performances of students in K-12 schools. The purpose of this article is to review perspectives of teaching over a period of several decades in the literature and to investigate the perceptions of practicing teachers enrolled in graduate school regarding necessary components of effective teaching. Results indicate that many of the notions indicated in the literature as essential for effective teaching are aligned with the perceptions of educators currently enrolled in graduate school. There are definite implications embedded in the article for school leadership.
Charm and leptons
P. Crochet
Physics , 2002, DOI: 10.1016/S0375-9474(02)01448-3
Abstract: The present knowledge on charm and leptons is reviewed including the topics discussed at this conference and the progress made since the last Quark Matter conference. Special emphasis is placed on Jpsi production at the SPS which is one of the highlights in the field.
Quarkonia and heavy flavors at the LHC
P. Crochet
Physics , 2005, DOI: 10.1140/epjc/s2005-02221-2
Abstract: Perspectives for quarkonia and heavy flavors measurements in heavy ion collisions at LHC are reviewed
Methods of detection and estimation errors in ST radar studies
S. Ferrat,M. Crochet
Annales Geophysicae (ANGEO) , 2003,
Abstract: The classical theory of detection using the Neyman-Pearson principle is applied to stratosphere-troposphere (ST) radar signals. It is extended to provide information regarding the detection of weak signals which complements the detectability method usually employed in ST radar studies. It is shown that for ST radar signals of low amplitude and a detectability around 3 (a value commonly invoked in literature), the probability of detection is about equal to the probability of false alarm. The question of threshold detectability is also discussed. Spectral moments errors are evaluated by a method which is an extension of the analytical method of estimation developed by Miller and Rochwarger and the results compared to other statistical and analytical models. As already known, three factors can affect the error on the estimated parameters: the signal-to-noise ratio, the spectral width and the incoherent integration number. For high signal-to-noise ratios, analytical results are in good agreement with Barrick's and Denenberg's theoretical models and with Yamamoto's statistical one. For low signal-to-noise ratios, the spectral parameters are more sensitive to the selected model but overall variability is similar.
(Di)lepton physics with ALICE
P. Crochet,the ALICE Collaboration
Physics , 2005, DOI: 10.1016/j.nuclphysa.2006.06.165
Abstract: Physics perspectives with(di)lepton measurements with the ALICE detector at the LHC are reviewed. Special emphasis is placed on heavy flavor physics.
Cell distribution after intracoronary bone marrow stem cell delivery in damaged and undamaged myocardium: implications for clinical trials
Virginie F Forest, Ashok M Tirouvanziam, Christian Perigaud, Sarah Fernandes, Marion S Fusellier, Jean-Claude Desfontis, Claire S Toquet, Marie-Fran?oise M Heymann, Dominique P Crochet, Patricia F Lemarchand
Stem Cell Research & Therapy , 2010, DOI: 10.1186/scrt4
Abstract: Myocardial infarction was induced using balloon inflation in the left coronary artery in domestic pigs. At seven days post-myocardial infarction, 1 × 10(8) autologous bone marrow mononuclear cells were labeled with fluorescent marker and/or 99mTc radiotracer, and delivered using intracoronary or peripheral intravenous injection (leg vein).Scintigraphic analyses and Υ-emission radioactivity counting of harvested organs showed a significant cell fraction retained within the heart after intracoronary injection (6 ± 1.7% of injected radioactivity at 24 hours), whereas following peripheral intravenous cell injection, no cardiac homing was observed at 24 hours and cells were mainly detected within the lungs. Importantly, no difference was observed in the percentage of retained cells within the myocardium in the presence or absence of myocardial infarction. Histological evaluation did not show arterial occlusion in both animal groups and confirmed the presence of bone marrow mononuclear cells within the injected myocardium area.Intravenous bone marrow mononuclear cell injection was ineffective to target myocardium. Myocardial cell distribution following intracoronary injection did not depend on myocardial infarction presence, a factor that could be useful for cardiac cell therapy in patients with chronic heart failure of non-ischemic origin or with ischemic myocardium without myocardial infarction.The possibility of tissue repair by autologous adult progenitor cells immediately captured the attention of clinicians confronted with the disabling, life-threatening circumstance of heart failure. During the last five years, more than a dozen clinical studies using bone marrow cells have been published, ranging from case reports to formal trials, deploying a range of differing cell-based therapies with the shared objective of improving cardiac repair [1].Although most of these initial human trials suggest functional improvement, randomized clinical trials reported contradictory
Charmonium and bottomonium production in heavy-ion collisions
Rapp, R.;Blaschke, D.;Crochet, P.
High Energy Physics - Phenomenology , 2008, DOI: 10.1016/j.ppnp.2010.07.002
Abstract: We review the present status in the theoretical and phenomenological understanding of charmonium and bottomonium production in heavy-ion collisions. We start by recapitulating the basic notion of "anomalous quarkonium suppression" in heavy-ion collisions and its recent amendments involving regeneration reactions. We then survey in some detail concepts and ingredients needed for a comprehensive approach to utilize heavy quarkonia as a probe of hot and dense matter. The theoretical discussion encompasses recent lattice QCD computations of quarkonium properties in the Quark-Gluon Plasma, their interpretations using effective potential models, inelastic rate calculations and insights from analyses of electromagnetic plasmas. We illustrate the powerful techniques of thermodynamic Green functions (T-matrices) to provide a general framework for implementing microscopic properties of heavy quarkonia into a kinetic theory of suppression and regeneration reactions. The theoretical concepts are tested in applications to heavy-ion reactions at SPS, RHIC and LHC. We outline perspectives for future experiments on charmonium and bottomonium production in heavy-ion collisions over a large range in energy (FAIR, RHIC-II and LHC). These are expected to provide key insights into hadronic matter under extreme conditions using quarkonium observables.
Temperature sheets and aspect sensitive radar echoes
H. Luce,M. Crochet,F. Dalaudier
Annales Geophysicae (ANGEO) , 2003,
Abstract: here have been years of discussion and controversy about the existence of very thin and stable temperature sheets and their relationship to the VHF radar aspect sensitivity. It is only recently that very high-resolution in situ temperature observations have brought credence to the reality and ubiquity of these structures in the free atmosphere and to their contribution to radar echo enhancements along the vertical. Indeed, measurements with very high-resolution sensors are still extremely rare and rather difficult to obtain outside of the planetary boundary layer. They have only been carried out up to the lower stratosphere by Service d’A′ eronomie (CNRS, France) for about 10 years. The controversy also persisted due to the volume resolution of the (Mesosphere)-Stratosphere-Troposphere VHF radars which is coarse with respect to sheet thickness, although widely sufficient for meteorological or mesoscale investigations. The contribution within the range gate of many of these structures, which are advected by the wind, and decay and grow at different instants and could be distorted either by internal gravity waves or turbulence fields, could lead to radar echoes with statistical properties similar to those produced by anisotropic turbulence. Some questions thus remain regarding the manner in which temperature sheets contribute to VHF radar echoes. In particular, the zenithal and azimuthal angular dependence of the echo power may not only be produced by diffuse reflection on stable distorted or corrugated sheets, but also by extra contributions from anisotropic turbulence occurring in the stratified atmosphere. Thus, for several years, efforts have been put forth to improve the radar height resolution in order to better describe thin structures. Frequency interferometric techniques are widely used and have been recently further developed with the implementation of high-resolution data processings. We begin by reviewing briefly some characteristics of the ST radar echoes with a particular emphasis on recent works. Their possible coupling with stable sheets is then presented and their known characteristics are described with some hypotheses concerning their generation mechanisms. Finally, measurement campaigns that took recently place or will be carried out in the near future for improving our knowledge of these small-scale structures are presented briefly. Key words. Meteorology and atmospheric dynamics (turbulence; instruments and techniques) – Radio Science (remote sensing)
Investigation of background subtraction techniques for high mass dilepton physics
P. Crochet,P. Braun-Munzinger
Physics , 2001, DOI: 10.1016/S0168-9002(01)02005-8
Abstract: The signals in high mass dilepton spectroscopy with nucleus-nucleus collisions at collider energies are superimposed on a generally large combinatorial background. Because this background contains a significant correlated like-sign component originating from B meson decays, the "like-sign" method to determine the background is inappropriate. We discuss strategies to deal with the correlations in the background. By taking advantage of the B meson oscillation mechanism and of the particular features of B meson decays a new method to measure the bbbar production cross-section is proposed.
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