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1. Brugière, Timothée. Oscillations des neutrinos sur et hors faisceau : étude des performances du système d’acquisition d’OPERA : Neutrino oscillations " on " and " off -beam" : studies of the OPERA acquisition system performance.

Degree: Docteur es, Physique des particules, 2011, Université Claude Bernard – Lyon I

OPERA (Oscillation Project with Emulsion-tRacking Apparatus) est une expérience sur faisceau de neutrino située dans le Hall C du laboratoire souterrain du Gran Sasso (LNGS), en Italie, à une profondeur équivalente à 3.8 km d'eau (correspondant à une coupure en énergie à 1.5 TeV pour les muons à la surface). L'objectif premier d'OPERA est l'observation directe de l'oscillation νμ ➝ ντ dans le secteur des neutrinos atmosphériques par apparition d'événements ντ à 730km de la cible, dans un faisceau (CNGS) quasiment pur en νμ. OPERA est un détecteur hybride contenant une partie cible (~125 000 briques composées d'une succession de feuilles d'émulsion et de plomb) instrumentée et d'un spectromètre. La prise de données a commencé en 2006 et 55 000 événements neutrinos ont été enregistrés à ce jour. Le premier candidat ντ a été observé cette année. Le travail produit pendant cette thèse est axé suivant trois sujets principaux : la définition de règles de déclenchement du système d'acquisition du trajectographe pour les événements neutrinos du faisceau, la synchronisation des éléments du trajectographe et des plans de RPC ainsi que l'implémentation des résultats dans la simulation et l'étude de la faisabilité d'une analyse des oscillations des neutrinos atmosphériques dans les données hors-faisceau. La modification des règles de déclenchement du trajectographe a permis d'atteindre les valeurs proposées dans le proposal d'OPERA, ie une efficacité de déclenchement supérieure à 99%. Cette évolution a été rendu possible par la mise en place de fenêtres en temps en coïncidence avec le faisceau CNGS pendant lesquelles les coupures sont abaissées, permettant de récupérer les événements de basse multiplicité. Une étude poussée de l'intercalibration des détecteurs électroniques a permis la synchronisation de l'ensemble des informations venant des éléments du trajectographe et des RPC. Les résultats de cette analyse sont maintenant inclus dans la simulation du détecteur. Le travail de calibration a permis de produire une étude sur l'oscillation des neutrinos atmosphériques "hors-faisceau" grace à la détection de particules montantes. Les analyses présentées dans cette thèse ont permis une meilleure compréhension du détecteur d'OPERA et démontré sa capacité à observer des phénomènes ne dépendant pas du faiseau CNGS. Des analyses sur la détection des neutrinos atmosphériques et la caractérisation du flux de muons cosmiques (variations saisonnières entre autres) sont désormais possibles grace à la statistique accumulée et la compréhension plus fine des systèmes d'acquisition. Les corrections sur la propagation des signaux dans les détecteurs électroniques sont aujourd'hui utilisées pour la mesure de la vélocité des neutrinos du faisceau

OPERA (" Oscillation Project with Emulsion-tRacking Apparatus ") is a neutrino beam experiment located in hall C of the Gran Sasso underground laboratory (LNGS), in Italia, under a equivalent of 3.8 km water (corresponding to a cut at 1.5 TeV for the muons). The first purpose of OPERA is the direct…

Advisors/Committee Members: Marteau, Jacques-Emmanuel (thesis director).

Subjects/Keywords: Neutrino; Détecteur; Oscillation; Faisceau; Atmosphérique; Cosmiques; OPERA; CNGS; Etector; Beam; Atmospheric; Cosmics; Data acquisition systems; Signal processing; Trigger; Synchronization; 539.72

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APA (6th Edition):

Brugière, T. (2011). Oscillations des neutrinos sur et hors faisceau : étude des performances du système d’acquisition d’OPERA : Neutrino oscillations " on " and " off -beam" : studies of the OPERA acquisition system performance. (Doctoral Dissertation). Université Claude Bernard – Lyon I. Retrieved from http://www.theses.fr/2011LYO10035

Chicago Manual of Style (16th Edition):

Brugière, Timothée. “Oscillations des neutrinos sur et hors faisceau : étude des performances du système d’acquisition d’OPERA : Neutrino oscillations " on " and " off -beam" : studies of the OPERA acquisition system performance.” 2011. Doctoral Dissertation, Université Claude Bernard – Lyon I. Accessed May 21, 2019. http://www.theses.fr/2011LYO10035.

MLA Handbook (7th Edition):

Brugière, Timothée. “Oscillations des neutrinos sur et hors faisceau : étude des performances du système d’acquisition d’OPERA : Neutrino oscillations " on " and " off -beam" : studies of the OPERA acquisition system performance.” 2011. Web. 21 May 2019.

Vancouver:

Brugière T. Oscillations des neutrinos sur et hors faisceau : étude des performances du système d’acquisition d’OPERA : Neutrino oscillations " on " and " off -beam" : studies of the OPERA acquisition system performance. [Internet] [Doctoral dissertation]. Université Claude Bernard – Lyon I; 2011. [cited 2019 May 21]. Available from: http://www.theses.fr/2011LYO10035.

Council of Science Editors:

Brugière T. Oscillations des neutrinos sur et hors faisceau : étude des performances du système d’acquisition d’OPERA : Neutrino oscillations " on " and " off -beam" : studies of the OPERA acquisition system performance. [Doctoral Dissertation]. Université Claude Bernard – Lyon I; 2011. Available from: http://www.theses.fr/2011LYO10035


Colorado State University

2. Hannah, Walter. Role of moisture-convection feedbacks in simulating the intraseasonal oscillation, The.

Degree: MS(M.S.), Atmospheric Science, 2007, Colorado State University

The sensitivity of the intraseasonal oscillation (ISO) in the National Center for Atmospheric Research's (NCAR) Community Atmosphere Model (CAM) version 3.1 with Relaxed Arakawa-Schubert (RAS) convection modified with the moisture trigger of Tokioka et al. (1988) is analyzed with respect to changes to the specified minimum entrainment rate. Implementation of the Tokioka moisture trigger results in a drier and cooler troposphere due to the suppression of deep convection. A higher minimum entrainment threshold leads to more suppressed deep convection and improves the sensitivity of convection to free tropospheric humidity. This is accompanied by enhanced intraseasonal variability in the tropics. The simulated ISO which results from a non-zero minimum entrainment rate resembles a moisture mode. Variance of the column integrated saturation fraction is increased when minimum entrainment rate is increased, and precipitation becomes an increasingly non-linear function of saturation fraction which indicates that moisture-convection feedbacks are enhanced in the model. A reduction in the mean column moist static energy export by divergent motions indicates that the simulations with non-zero minimum entrainment thresholds are able to achieve negative gross moist stability which has been suggested as a necessary condition to be able to produce a moisture mode. This decrease in gross moist stability with increased minimum entrainment rate is accompanied by a lowering of the mean diabatic heating profile maximum. Additional simulations are analyzed to investigate the impact of a rain re-evaporation fraction parameter on the simulated ISO. A higher rain re-evaporation fraction leads a stronger ISO signal in the model. However, In contrast to the effect of increased minimum entrainment rate, increased rain re-evaporation fraction yields a mean state which is warmer and moister. This discrepancy in mean state humidity change indicates that intraseasonal variability has no unique dependence on basic state humidity, in contradiction to that suggested in previous studies. Advisors/Committee Members: Maloney, Eric D. (advisor), Randall, David A. (David Allan), 1948- (committee member), Venayagamoorthy, Subhas Karan (committee member).

Subjects/Keywords: MJO; intraseasonal oscillation; Madden-Julian oscillation; ISO; precipitation; convection; rain re-evaporation; Tokioka moisture trigger; entrainment rate; Madden-Julian oscillation; Convection (Meteorology); Precipitation (Meteorology)

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APA (6th Edition):

Hannah, W. (2007). Role of moisture-convection feedbacks in simulating the intraseasonal oscillation, The. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/35648

Chicago Manual of Style (16th Edition):

Hannah, Walter. “Role of moisture-convection feedbacks in simulating the intraseasonal oscillation, The.” 2007. Masters Thesis, Colorado State University. Accessed May 21, 2019. http://hdl.handle.net/10217/35648.

MLA Handbook (7th Edition):

Hannah, Walter. “Role of moisture-convection feedbacks in simulating the intraseasonal oscillation, The.” 2007. Web. 21 May 2019.

Vancouver:

Hannah W. Role of moisture-convection feedbacks in simulating the intraseasonal oscillation, The. [Internet] [Masters thesis]. Colorado State University; 2007. [cited 2019 May 21]. Available from: http://hdl.handle.net/10217/35648.

Council of Science Editors:

Hannah W. Role of moisture-convection feedbacks in simulating the intraseasonal oscillation, The. [Masters Thesis]. Colorado State University; 2007. Available from: http://hdl.handle.net/10217/35648


Virginia Tech

3. Gardner, Robert Matthew. A Wide-Area Perspective on Power System Operation and Dynamics.

Degree: PhD, Electrical and Computer Engineering, 2008, Virginia Tech

Classically, wide-area synchronized power system monitoring has been an expensive task requiring significant investment in utility communications infrastructures for the service of relatively few costly sensors. The purpose of this research is to demonstrate the viability of power system monitoring from very low voltage levels (120 V). Challenging the accepted norms in power system monitoring, the document will present the use of inexpensive GPS time synchronized sensors in mass numbers at the distribution level. In the past, such low level monitoring has been overlooked due to a perceived imbalance between the required investment and the usefulness of the resulting deluge of information. However, distribution level monitoring offers several advantages over bulk transmission system monitoring. First, practically everyone with access to electricity also has a measurement port into the electric power system. Second, internet access and GPS availability have become pedestrian commodities providing a communications and synchronization infrastructure for the transmission of low-voltage measurements. Third, these ubiquitous measurement points exist in an interconnected fashion irrespective of utility boundaries. This work offers insight into which parameters are meaningful to monitor at the distribution level and provides applications that add unprecedented value to the data extracted from this level. System models comprising the entire Eastern Interconnection are exploited in conjunction with a bounty of distribution level measurement data for the development of wide-area disturbance detection, classification, analysis, and location routines. The main contributions of this work are fivefold: the introduction of a novel power system disturbance detection algorithm; the development of a power system oscillation damping analysis methodology; the development of several parametric and non-parametric power system disturbance location methods, new methods of power system phenomena visualization, and the proposal and mapping of an online power system event reporting scheme. Advisors/Committee Members: Liu, Yilu (committeechair), Abbott, A. Lynn (committee member), Mili, Lamine M. (committee member), Thorp, James S. (committee member), Russell, David L. (committee member).

Subjects/Keywords: TDOA; FNET; FDR; GPS; Wide-Area monitoring; wide-area measurements; power system event; power system; load shedding; generation trip; eastern interconnection; wams; ems; nerc; ercot; wecc; parzen window; interconnection islanding; PMU; half-plane method; least squares; event trigger; generation-load mismatch; electromechanical wave; wave propagation; time delay of arrival; oscillation trigger; modal analysis; electric grid; transmission network; transmission system; hypocenter; frequency; matrix pencil; mahalanobis distance

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APA (6th Edition):

Gardner, R. M. (2008). A Wide-Area Perspective on Power System Operation and Dynamics. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/26779

Chicago Manual of Style (16th Edition):

Gardner, Robert Matthew. “A Wide-Area Perspective on Power System Operation and Dynamics.” 2008. Doctoral Dissertation, Virginia Tech. Accessed May 21, 2019. http://hdl.handle.net/10919/26779.

MLA Handbook (7th Edition):

Gardner, Robert Matthew. “A Wide-Area Perspective on Power System Operation and Dynamics.” 2008. Web. 21 May 2019.

Vancouver:

Gardner RM. A Wide-Area Perspective on Power System Operation and Dynamics. [Internet] [Doctoral dissertation]. Virginia Tech; 2008. [cited 2019 May 21]. Available from: http://hdl.handle.net/10919/26779.

Council of Science Editors:

Gardner RM. A Wide-Area Perspective on Power System Operation and Dynamics. [Doctoral Dissertation]. Virginia Tech; 2008. Available from: http://hdl.handle.net/10919/26779

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