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Search Results: 1 - 10 of 8282 matches for " Michel Launay "
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Prolonged Abstinence and Changes in Alcoholic Personality: A NEO PI-R Study  [PDF]
Isabelle Boulze, Michel Launay, Bertrand Nalpas
Psychology (PSYCH) , 2014, DOI: 10.4236/psych.2014.54041

Many studies have examined the risk factors for relapse in alcohol-dependent patients within the first year of treatment, and have generally focused on two personality dimensions: emotional instability and difficulty in establishing relationships. In this study, we examine if these weaknesses remain in prolonged alcohol abstinence. To do so, we administer the NEO PI-R to two groups of subjects. Group 1, Inactive Drinkers (ID), consists of 51 patients with at least two years of abstinence (average length of abstinence for this group is 6.2 years); Group 2, Recently Detoxified Drinkers (RDD), comprises 93 patients who have recently ceased consuming alcohol. Based on NEO PI-R scores, our results evidence that inactive drinkers experience significant reduction in emotional instability and improvement in relationships to others. We further observe that, with long-term abstinence, these personality dimensions normalize, ceasing to be risk factors for relapse. Additionally, we find that this long-term amelioration of traits altered by alcohol amounts to an improved behavioral adaptation to life events rather than an actual change in personality.

Variation of Interpersonal Values Following Alcohol Withdrawal in Alcoholics Seeking Treatment: 12-Month Longitudinal Study  [PDF]
Isabelle Boulze, Michel Launay, Bertrand Nalpas
Psychology (PSYCH) , 2016, DOI: 10.4236/psych.2016.71004
Abstract: We performed a community research program in order to analyze the evolution of interpersonal values following alcohol withdrawal in alcoholics attending to a self-help group. The Gordon questionnaire on interpersonal values was administered every 3 months during one year to 145 individuals having recently stopped drinking. At baseline, scores of 5 interpersonal categories (dependence, conformism, consideration, independence, kindness) were in the medium interval of usual values while that of command category was low, specifically in men. Values of conformism and independence increased according to time while those of dependence and consideration decreased but the differences were significant only in those who remained abstinent all along the observation period. In those who relapsed, there were no modifications; however, sharing these values might have allowed these subjects to be less isolated. We will describe in details the nature of these evolutions.
Landau quantization effects in ultracold atom-ion collisions
Andrea Simoni,Jean-Michel Launay
Physics , 2011, DOI: 10.1088/0953-4075/44/23/235201
Abstract: We study ultracold atom-ion collisions in the presence of an external magnetic field. At low collision energy the field can drastically modify the translational motion of the ion, which follows quantized cyclotron orbits. We present a rigorous theoretical approach for the calculation of quantum scattering amplitudes in these conditions. Collisions in different magnetic field regimes, identified by the size of the cyclotron radius with respect to the range of the interaction potential, are investigated. Our results are important in cases where use of a magnetic field to control the atom-ion collision dynamics is envisioned.
Post-Traumatic Stress Disorder and Health-Related Quality of Life in Patients and Their Significant Others Facing Lung Cancer Diagnosis: Intrusive Thoughts as Key Factors  [PDF]
Jean-Louis Pujol, Carine Plassot, Jean-Pierre Mérel, Elodie Arnaud, Michel Launay, Jean-Pierre Daurès, Isabelle Boulze
Psychology (PSYCH) , 2013, DOI: 10.4236/psych.2013.46A1001

Purpose: 1) to determine the level of post-traumatic stress disorder (PTSD) by means of impact of event scale (IES) in patients for whom lung cancer has been diagnosed for the first time and compare this level in patients having learnt that they affected by chronic obstructive pulmonary disease (COPD); 2) to compare PTSD in patients and their significant others facing a diagnosis of lung cancer; 3) to determine whether or not IES and General Health Questionnaire 28 (GHQ-28) correlate. Methods: This prospective survey-study included 41 consecutive patients who learnt that they were afflicted by primary lung cancer. IES and GHQ-28 were answered once between four and five weeks following medical appointment. The significant others (n = 16) who were present during the lung cancer diagnostic appointment were also invited to complete similar questionnaires. Control group consisted of 19 patients with chronic asthma or COPD. Results: Following a lung cancer diagnosis, patients and their significant others are indistinctly affected by a high level of PTSD. These two groups had a higher frequency of high IES total score when compared with COPD patients. The IES intrusion subscale score significantly differed among groups: median [IR] values: 20 [12 - 26]; 15 [9 - 22]; 7 [5 - 15] for significant others, cancer patients and COPD patients respectively; P = 0.02). IES and GHQ-28 inversely correlated. Conclusion: Patients and

Ultracold Li + Li_2 collisions: bosonic and fermionic cases
Marko T. Cvitas,Pavel Soldan,Jeremy M. Hutson,Pascal Honvault,Jean-Michel Launay
Physics , 2004, DOI: 10.1103/PhysRevLett.94.033201
Abstract: We have carried out quantum dynamical calculations of vibrational quenching in Li + Li_2 collisions for both bosonic 7Li and fermionic 6Li. These are the first ever such calculations involving fermionic atoms. We find that for the low initial vibrational states considered here (v less than or equal to 3), the quenching rates are not suppressed for fermionic atoms. This contrasts with the situation found experimentally for molecules formed via Feshbach resonances in very high vibrational states.
Polar molecule reactive collisions in quasi-1D systems
Andrea Simoni,Srihari Srinivasan,Jean-Michel Launay,Krzysztof Jachymski,Zbigniew Idziaszek,Paul S. Julienne
Physics , 2014, DOI: 10.1088/1367-2630/17/1/013020
Abstract: We study polar molecule scattering in quasi-one-dimensional geometries. Elastic and reactive collision rates are computed as a function of collision energy and electric dipole moment for different confinement strengths. The numerical results are interpreted in terms of first order scattering and of adiabatic models. Universal dipolar scattering is also discussed. Our results are relevant to experiments where control of the collision dynamics through one dimensional confinement and an applied electric field is envisioned.
Interactions and dynamics in Li + Li_2 ultracold collisions
Marko T. Cvitas,Pavel Soldan,Jeremy M. Hutson,Pascal Honvault,Jean-Michel Launay
Physics , 2007, DOI: 10.1063/1.2752162
Abstract: A potential energy surface for the lowest quartet electronic state of lithium trimer is developed and used to study spin-polarized Li + Li_2 collisions at ultralow kinetic energies. The potential energy surface allows barrierless atom exchange reactions. Elastic and inelastic cross sections are calculated for collisions involving a variety of rovibrational states of Li_2. Inelastic collisions are responsible for trap loss in molecule production experiments. Isotope effects and the sensitivity of the results to details of the potential energy surface are investigated. It is found that for vibrationally excited states the cross sections are only quite weakly dependent on details of the potential energy surface.
Ultracold collisions involving heteronuclear alkali metal dimers
Marko T. Cvitas,Pavel Soldan,Jeremy M. Hutson,Pascal Honvault,Jean-Michel Launay
Physics , 2005, DOI: 10.1103/PhysRevLett.94.200402
Abstract: We have carried out the first quantum dynamics calculations on ultracold atom-diatom collisions in isotopic mixtures. The systems studied are spin-polarized 7Li + 6Li7Li, 7Li + 6Li2, 6Li + 6Li7Li and 6Li + 7Li2. Reactive scattering can occur for the first two systems even when the molecules are in their ground rovibrational states, but is slower than vibrational relaxation in homonuclear systems. Implications for sympathetic cooling of heteronuclear molecules are discussed.
Quantum Dynamics of Ultracold Na + Na_2 collisions
Pavel Soldan,Marko T. Cvitas,Jeremy M. Hutson,Pascal Honvault,Jean-Michel Launay
Physics , 2002, DOI: 10.1103/PhysRevLett.89.153201
Abstract: Ultracold collisions between spin-polarized Na atoms and vibrationally excited Na_2 molecules are investigated theoretically, using both an inelastic formalism (neglecting atom exchange channels) and a reactive formalism (including atom exchange). Calculations are carried out on both pairwise additive and non-additive potential energy surfaces for the quartet electronic state. In both inelastic and reactive calculations, the Wigner threshold laws are followed for energies below 10^{-6} K. It is found that vibrational relaxation processes dominate elastic processes for temperatures below 10^{-3} - 10^{-4} K. For temperatures below 10^{-5} K, the rate coefficients for vibrational relaxation (v = 1 -> 0) from the full calculation are 4.8 x 10^{-11} and 5.2 x 10^{-10} cm^3 s^-1 for the additive and non-additive potentials respectively.
Guerra y Política Mundial. Dimensiones De La Hegemonía De Los Estados Unidos
Análisis Político , 2007,
Abstract: analysts should avoid the retrospective illusion of believing that the us hegemony, as a trend and a firmly entrenched practice occurred during the independence or a little later (with the monroe doctrine). in fact, the onset of hegemony took place during the last decades of the xixth century and strengthened during the following century, particularly because of the european decline. moreover, the period following 09/11 has been a very crucial one, with the emergence of a new foreign policy that combines a large element of the doctrine of intervention, with the ancient just-war doctrine, a difficulty to take into account the change in the art of war, and the forgetfulness of the classical terms of the diplomatic and strategic behavior. the successive years will reveal if the eruption of condoleeza rice's "transformational diplomacy" represents a real epoch-making turning point.
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