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Dissertations / Theses on the topic 'FIRST experiment'

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Published: 14 March 2023

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1

TOPPI, MARCO. "Fragmentation measurements with the FIRST experiment." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2014. http://hdl.handle.net/2108/202131.

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2

Shi, Haijian. "Best-first Decision Tree Learning." The University of Waikato, 2007. http://hdl.handle.net/10289/2317.

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In best-first top-down induction of decision trees, the best split is added in each step (e.g. the split that maximally reduces the Gini index). This is in contrast to the standard depth-first traversal of a tree. The resulting tree will be the same, just how it is built is different. The objective of this project is to investigate whether it is possible to determine an appropriate tree size on practical datasets by combining best-first decision tree growth with cross-validation-based selection of the number of expansions that are performed. Pre-pruning, post-pruning, CART-pruning can be performed this way to compare.
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3

Loaiza, Pía. "First results from the ORPHEUS dark matter experiment /." Bern : [s.n.], 2004. http://www.zb.unibe.ch/download/eldiss/04loaiza_p.pdf.

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4

Wang, Jue. "A First Experiment in Misplaced Trust in Augmented Reality." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1291819200.

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5

Scorza, Silvia. "EDELWEISS-II, direct Dark Matter search experiment : first data analysis and results." Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00561621.

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One of the greatest mysteries of the universe that, for the present, puzzles the mind of most astronomers, cosmologists and physicists is the question: "What makes up our universe?". This is due to how a certain substance named Dark Matter came under speculation. It is believed this enigmatic substance, of type unknown, accounts for almost three-quarters of the cosmos within the universe, could be the answer to several questions raised by the models of the expanding universe astronomers have created, and even decide the fate of the expansion of the universe. There is strong observational evidence for the dominance of non-baryonic Dark Matter (DM) over baryonic matter in the universe. Such evidence comes from many independent observations over different length scales. The most stringent constraint on the abundance of DM comes from the analysis of the Cosmic Microwave Background (CMB) anisotropies. In particular, the WMAP (Wilkinson Microwave Anisotropy Probe) experiment restricts the abundance of matter and the abundance of baryonic matter in good agreement with predictions from Big Bang Nucleosynthesis. It is commonly believed that such a non-baryonic component could consist of new, as yet undiscovered, particles, usually referred to as WIMPs (Weakly Interacting Massive Particles). Some extensions of the standard model (SM) of particle physics predict the existence of particles that would be excellent DM candidates. In particular great attention has been dedicated to candidates arising in supersymmetric theories: the Lightest Supersymmetric Particle (LSP). In the most supersymmetric scenarios, the so-called neutralino seems to be a natural candidate, being stable in theories with conservation of R-parity and having masses and cross sections of typical WIMPs. The EDELWEISS collaboration is a direct dark matter search experiment, aiming to detect directly a WIMP interaction in a target material, high purity germanium crystal working at cryogenic temperatures. It relies in the measurement of nuclear recoils that produce measurable effects in the crystal such ionization and heat. My PhD thesis is organized as follows. The first chapter aims to provide an introduction to the theoretical framework and the scientific motivation for the following work. The nature of DM has been one of the most challenging topics in contemporary physics since the first evidences of its existence had been found in the 1930s. Cosmologists and astrophysicists on one side, together with particle theorists on the other have put a lot of effort into this field: I will briefly account for their achievements and for the experimental strategies which can be set in this scenario. Since this thesis work was carried out within the EDELWEISS-II direct dark matter experiment, I will focus the next chapter on this topic, describing the main features. The second chapter is related to the set-up of the EDELWEISS-II, the current stage of the EDELWEISS experiment necessary after a first phase that achieved the best upper limit on the WIMP elastic scattering on nucleon as a function of WIMP mass in 2004. [....]
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6

Erfan, Aftab. "An experiment in therapeutic planning : learning with the Gwa'sala-'Nakwaxda'xw First Nations." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/45048.

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Many of the communities in which planners work are characterized by deeply rooted conflict and collective trauma, a legacy of various forms of injustice, including some that have been enabled by the planning profession itself. In this context, can planning play a healing or therapeutic role, without recreating or perpetuating the cycles of oppression? This dissertation reflects on my community-based action research on Tsulquate, a small First Nations reserve on Vancouver Island, where the Gwa’sala and ‘Nakwaxda’xw people have lived since relocation in 1964. Between 2009 and 2012, and particularly over a year of intensive fieldwork, I engaged in this community to assist in the ambitious task of addressing intergenerational trauma, the importance of which was expressed within the Band’s newly created Comprehensive Community Plan. Written as mixed-genre creative analytic process (CAP) ethnography, the dissertation tells the stories of my engagement, and in particular of a series of public, intergenerational workshops I facilitated using a methodology called Deep Democracy. I document evidence of modest but promising patterns of individual and collective ‘healing’ and ‘transformation’ in the course of the workshops, and evaluate the effectiveness of my tools and approaches using first person (reflective), second person (interpersonal), and third person (informant-based) sources of information. I argue in favour of a role for a therapeutic orientation in planning, suggesting that planning is in fact particularly well-suited to a therapeutic task given its collaborative-community focus, its ability to connect the past to the future, its practical orientation, and its relative lack of ‘baggage’ compared with the other helping professions. The ability to play a therapeutic or healing role is contingent, however, not only on planners learning new skills, but also on developing a set of ‘metaskills’ or personal attitudes –compassion, playfulness and beginner’s mind – that are essential for effective and ethical involvement in such sensitive settings. I argue that reflective practice is key to the making of therapeutic planners, and outline a developmental path based on a combination of personal and assisted reflective practice: journaling, meditation, artistic practice, peer coaching, and supervision.
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7

Schott, Matthias. "Study of the Z Boson Production at the ATLAS Experiment with First Data." Diss., lmu, 2007. http://nbn-resolving.de/urn:nbn:de:bvb:19-73164.

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8

Leding, Albin. "Recommendation for first pharmacokinetic in vivo experiment design with a pharmacometric informed approach." Thesis, Uppsala universitet, Institutionen för farmaci, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447311.

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Tuberculosis, the leading cause of death by a single infection disease caused by bacteria, requires long treatments and the bacteria are prone to develop drug resistance. Therefore, new efficient treatment regiments needs developing, which requires new tools for drug development. A major reason for discontinuance of a drug under development is undesired pharmacokinetic properties. Therefore, it is important to have early information of this, preferably the first time the drug is tested in animals. The first in vivo pharmacokinetic experiment is often done in mice and the only information present at this stage are often in vitro values and physicochemical properties. Physiological-based pharmacokinetic modelling can be used to extrapolate from in vitro to in vivo values. From this, the first in vivo pharmacokinetic experiment can be designed, often with the goal of reducing the amount of mice. This goal is one of the three R.s and it is called Reduction. To explore the Reduction of an experiment population pharmacokinetic modelling can be utilized via exploration of the imprecision, bias and probability of an informative experiment to evaluate if a design meets the goal of Reduction. In this report a recommendation of the first in vivo pharmacokinetic experiment is presented. This is based on in vitro values and physicochemical properties that are common in anti-tuberculosis drugs. If the probability of an informative experiment is critical, a terminal sampling of 40 mice is recommended. If imprecision and bias are necessary, zipper sampling of 10 mice is recommended.
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9

BASILICO, DAVIDE. "FIRST INDICATION OF SOLAR NEUTRINOS FROM THE CNO CYCLE REACTIONS WITH THE BOREXINO EXPERIMENT." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/709966.

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Solar neutrinos play a unique and irreplaceable role for the comprehension of the mechanisms powering our star. The study of solar neutrino fluxes allows us to definitely prove that the Sun is powered by thermonuclear reactions occurring in its core. Several questions concerning solar neutrinos are still unsolved. In particular, neutrinos emitted in the CNO cycle of reactions are the only undetected piece of the solar fusion puzzle. This cycle is believed to be the main engine of very massive stars, while it is expected to contribute only ~1% to the solar luminosity. Observing neutrinos from the CNO reactions would have a striking importance in astrophysics, providing the first direct confirmation of the existence of this important energy source in the core of the stars. The Borexino detector is an ultrapure liquid scintillator-based detector located at the Laboratori Nazionali del Gran Sasso. Throughout a more than ten-year long data taking, Borexino has achieved outstanding results about solar neutrino physics, measuring all the neutrino fluxes emitted from the pp-chain nuclear reactions. This thesis is devoted to the CNO solar neutrino search with Borexino: analyzing the latest three years of data-taking (Phase-III) I provide the first direct experimental indication of a signal of CNO neutrinos. I describe the details of the analysis, the CNO neutrino results and their implications in terms of solar physics.
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10

Corazzini, Luca, Stefano Galavotti, Rupert Sausgruber, and Paola Valbonesi. "Allotment in First-Price Auctions: An Experimental Investigation." Springer US and the Economic Science Association, 2016. http://dx.doi.org/10.1007/s10683-016-9476-1.

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We experimentally study the effects of allotment - the division of an item into homogeneous units - in independent private value auctions. We compare a single-item, first-price auction with two equivalent treatments with allotment: a two-unit discriminatory auction and two simultaneous single-unit first-price auctions. We find that allotment mitigates overbidding, with this effect being stronger in the discriminatory auction. In the allotment treatments, we observe large and persistent bid spreading. Across treatments, the discriminatory auction is the least efficient and generates the lowest revenue.
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11

Rocchetti, Arianna. "MonteCarlo simulation of the XENON1T experiment and first comparison with the Muon Veto data." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13513/.

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L’esperimento XENON1T, in acquisizione dati presso i Laboratori Nazionali del Gran Sasso, è una Time Projection Chamber (TPC) contenente 2 t di xeno liquido ed ha come obiettivo una sensibilità per sezioni d'urto WIMP-nucleone indipendenti dallo spin pari a 1.6 10^(-47) cm^(2), per WIMP di massa 50 GeV/c^(2), in 2 t y. A tale scopo è fondamentale la riduzione di tutte le sorgenti di fondo. Per abbattere il fondo esterno la TPC è inserita all'interno di un Muon Veto: una vasca cilindrica riempita di acqua, dotata di 84 fotomoltiplicatori (PMT) , che funge sia da schermo passivo contro la radiazione esterna (gamma e neutroni), sia da veto per i muoni grazie alla rivelazione della luce Cherenkov da essi prodotta in acqua. In questo lavoro presentiamo uno studio sulle configurazioni di trigger del Muon Veto e sulla sua efficienza. Lo studio è basato sul confronto di simulazioni Monte Carlo con i primi dati del rivelatore. Si ottiene un'efficienza del 99.5% per eventi di muone e del 43% per sciami generati da interazioni del muone nella roccia che circonda la sala sperimentale, e conseguente riduzione degli eventi di background attesi nell'attuale run scientifico a 1.3 10^(-3) eventi. È già previsto dalla collaborazione il futuro upgrade dell'esperimento: XENONnT. Uno studio sulle possibili geometrie della TPC di XENONnT è stato effettuato mediante simulazioni Monte Carlo. Tra le possibili migliorie apportabili a XENONnT vi è la sostituzione degli attuali sensori di luce con fotomoltiplicatori al silicio (SiPM). Le simulazioni mostrano che, mediante una copertura totale della TPC con i SiPM, si ha un aumento dell'efficienza nella collezione di luce (LCE) del 20%. La LCE è un parametro fondamentale per la rivelazione del segnale di luce (S1) nella TPC; in questa configurazione si raggiunge una soglia in energia per rinculi nucleari di circa 3 keV, aumentando in modo significativo la sensibilità dell'esperimento, in particolare per WIMP di piccola massa.
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12

YOUNIS, MUHAMMAD HANNAN. "Calibration of the Large Hodoscope ToF-Wall and Preliminary Results of the FIRST Experiment." Doctoral thesis, Politecnico di Torino, 2013. http://hdl.handle.net/11583/2506123.

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Hadron therapy is an alternative way of treating cancerous tumors. It consists of irradiating tumors with protons (proton therapy) or light nuclei (alphas, carbon ions). The study of fragmentation processes is relevant for different fields of the physics concerning both basic research and applications. The energy range that is accessible at Heavy Ion Synchrotron SIS is of fundamental importance for shielding in space radiations, hadron-therapy and is interesting for different aspects exploring nuclear physics. The FIRST (Fragmentation of Ions Relevant for Space and Therapy) experiment has been designed to study nuclear fragmentation processes in the energy range between 100 and 1000 MeV/u (Mega Electron Volt per nucleon), measuring double differential cross sections, with respect to kinetic energy and scattering polar angle. This experiment was carried because there is a strong need of high-quality experimental data concerning C-12, O-16 and Fe-56 fragmentation on different targets. The first data taking has been performed at SIS accelerator facility of GSI Laboratory in Darmstadt (Germany) during August 2011 and a set of data has been collected using a 400 MeV/u carbon beam impinging on carbon and gold targets. This experiment helps not only for comparison purposes but also for the evolution of the space IC (Integrated Circuits) radiation damage evaluation. The experimental apparatus is based on both newly designed detectors placed around the target and on an already existing setup made of the ALADiN dipole magnet, the TP-MUSIC IV tracking ionization chamber, the ToF-Wall scintillator array and the LAND neutron detector. The above mentioned instruments have been integrated with new ones specifically designed for interaction region few centimeters around the target: a Start Counter (SC) based on a plastic scintillator, a drift chamber as Beam Monitor (BM), an automated mechanical system as a target holder, a silicon pixel detector Vertex to track charged fragments emerging from the target and a large-angle light fragment detector based on thick scintillators with solid photomultiplier, KENTROS (Kinetic Energy and Time Resolution Optimized on Scintillator). Most of the projectile fragments are produced in the forward direction, within small angles with respect to the beam direction and with velocities very close to those of carbon ions impinging on the target. The trajectories of these charged fragments fall within the ALADiN acceptance and, after magnetic bending, hit the ToF-Wall detector which enables measurements of the impinging point, arrival time and energy released in the scintillator array. In particular, we report performances and preliminary results obtained from ToF-Wall data analysis. This experiment will provide information about the secondary effects of nuclear fragments in healthy biological cells.
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13

Mavela, Lihleli. "Determination of the Spectroscopic Quadrupole moment of the first 2+ excited state in 32S." University of the Western Cape, 2019. http://hdl.handle.net/11394/7334.

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>Magister Scientiae - MSc
In this work we have determined the spectroscopic or static quadrupole moment of the rst excited state (QS (2+1) lying at 2230.6 keV in 32S using the reorientation e ect. The Coulomb-excitation experiment at safe bombarding energies was performed at iThemba LABS's AFRODITE vault, where 32S beams at 120.3 MeV were bombarded onto a 194Pt target of 1 mg/cm2 thickness. The beam energy has been chosen such that the separation between nuclear surfaces is greater than 6.5 fm at all scattering angles, in order to avoid nuclear interactions. A double-sided CD-type S3 silicon detector, with 24 rings and 32 sectors, has been placed upstream (at backward angles) to detect the scattered particles. Gamma rays have been detected with the AFRODITE clover array. This particle-gamma coincidence experiment allows for an angular distribution and Doppler correction of the gamma rays emitted at 9% the speed of light. The cross sections (or gamma-ray integrated yields) measured as a function of scattering angle at backward angles are sensitive to second-order perturbation e ects in Coulomb excitation, i.e., diagonal matrix elements which are directly related to the spectroscopic quadrupole moment. The gamma-ray integrated yields obtained from this experiment are compared with the GOSIA simulations, yielding a new measurement of QS (2+1) = 􀀀0:10 0:7 eb, which corresponds to a prolate shape in the intrinsic frame of the nucleus. The uncertainty of this measurement is limited by statistics. This result agrees with previous measurements and con rms the zig zag of shapes at the end of the sd shell when approaching the doubly-magic nucleus 40Ca. Nonetheless, the mystery continues as a prolate shape for the rst 2+ disagrees with modern theoretical mean- eld calculations and the pairing coupling model.
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14

Kruse, Florian [Verfasser], Bernhard [Akademischer Betreuer] Spaan, and Kevin [Gutachter] Kröninger. "First measurement of CP violation in B0s → J/ψK0S decays with the LHCb experiment / Florian Kruse." Dortmund : Universitätsbibliothek Dortmund, 2015. http://d-nb.info/1111581282/34.

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15

BALESTRA, FRANCESCA. "FIRST experiment: measurements of differential cross sections in 12C fragmentation for hadron-therapy and space applications." Doctoral thesis, Politecnico di Torino, 2015. http://hdl.handle.net/11583/2590156.

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The aim of the present work is to describe some preliminary results obtained within the experiment FIRST (Fragmentation of Ions Relevant for Space and Therapy). This experiment main goal is to measure the differential cross-sections in energy and angle of nuclear fragmentation processes, in a wide energy range (between 100 and 1000 MeV/n). The knowledge of these cross sections will be useful for cancer therapy and space radiation protection. This experiment was carried out because there is a strong need of high-quality experimental data concerning 12 C, 16 O and 56 Fe fragmentation on different targets. The first data taking has been performed at SIS (Heavy Ion Synchrotron) accelerator of GSI Laboratory in Darmstadt (Germany) during August 2011. Different sets of data have been collected using a 400 MeV/n carbon beam impinging on carbon and gold targets. Experimental data of single and double-differential cross sections for C-ions at energies less or equal to 400 MeV/n are needed to improve treatment plannings in particle-therapy. In particular accurate measurements of cross sections of light ions are urgently needed for improving transport codes to be used in cancer therapy. Algorithms that deal with the transport of charged particle in matter are essential for accurate treatment plannings, in order to evaluate possible long term side effects of dose released in healthy tissue. Unfortunately, the production of light fragments and their angular distribu- tions are affected by large uncertainties and various Monte Carlo codes may differ up to one order of magnitude in their predictions. Moreover, codes used for space radiation transport in shielding materials need more information on the fragmentation effects. Recently, NASA completed a large database of these measurements and observed that there are ion species and kinetic energy ranges not yet evaluated. The FIRST experiment aims to contribute to the knowledge of these nu- clear processes and to investigate the secondary effects on human tissues of hadron’s irradiation. In fact, most of the measurements carried out in the past are limited to fragment yields and to total fragmentation cross-sections, while the required measurements of single or double-differential cross-sections are deficient.
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16

Pohl, Sara [Verfasser], and Christian [Akademischer Betreuer] Kiesling. "Track reconstruction at the first level trigger of the Belle II experiment / Sara Pohl ; Betreuer: Christian Kiesling." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2018. http://d-nb.info/1156533724/34.

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17

Copland, Gordon Arthur, and gordon copland@flinders edu au. "A House for the Governor:Settlement Theory, the South Australian Experiment, and the Search for the First Government House." Flinders University. Education,Theology, Law, Humanities, 2006. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20061010.104925.

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This thesis considers the human spatial occupational behaviour generically called 'settlement'. Within this process a diagnostic index of settlement is created to assist in analysing, defining, and exploring the parameters of 'Settlement Theory'. There is particular reference to Edward Gibbon Wakefield's Theory of Systematic Colonisation in South Australia, as it is one of the few Settlement Theories actually put into practice. Two case studies are examined to develop a transitional argument that connects theory to material outcome. Firstly, considering the macro implications of theory and material culture by comparing the implementation of Wakefield's theory (The South Australian Experiment) and the site, design, and Government Domain of the Capital (Adelaide). Secondly, by considering the micro effect of the theory on material culture in the form of the Governor's residence between 1836 and 1856, including search for the first Government House (Government Hut), to test the connection at this level.
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18

Griffith, Peter Noel. "First observation and branching fraction measurement of the rare decay ∧⁰b → pKμ⁺μ⁻ at the LHCb experiment, CERN." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7446/.

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The analysis for the first observation and branching fraction measurement of the rare decay ∧\(^0\)\(_b\) → pKμ\(^+\)μ\(^-\) with respect to the control channel ∧\(^0\)\(_b\) → J/ψ pK was performed. The analysis was kept blind in ∧\(^0\)\(_b\) → pKμ\(^+\)μ\(^-\) to avoid selection bias as this decay is unobserved. The data is from proton-proton collisions recorded by the LHCb experiment in 2011 and 2012, corresponding to an integrated luminosity of 1 fb\(^-\)\(^1\) at 7 TeV and 2 fb\(^-\)\(^1\) at 8 TeV respectively. A corrected yield of (7.83 ± 0.131 ± 0.648) x 10\(^6\) ∧\(^0\)\(_b\) → J/ψ Pk candidates was measured for the full 3 fb\(^-\)\(^1\) and the analysis is currently under review by the LHCb Collaboration, awaiting approval to un-blind for the branching fraction measurement of ∧\(^0\)\(_b\) → pKμ\(^+\)μ\(^-\).
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19

Sinha, Amit Kumar. "An investigation of Marconi's first transatlantic experiment in Newfoundland to find the correct frequency of transmission (Guglielmo Marconi)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0031/MQ47478.pdf.

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20

Kahlenberg, Jan [Verfasser]. "First full-magnetic storage of ultracold neutrons in the tSPECT experiment for measuring the neutron lifetime / Jan Kahlenberg." Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2020. http://d-nb.info/1224810465/34.

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21

Marchevski, Radoslav Ivanov [Verfasser]. "First measurement of the $K^+} rightarrow pi^+}nuoverline{nu}$ decay with the NA62 experiment at CERN / Radoslav Ivanov Marchevski." Mainz : Universitätsbibliothek Mainz, 2019. http://d-nb.info/1178618625/34.

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22

Leenders, Karen. "'A hazardous experiment' : the First World War and changing British civilian and military attitudes to the people of India." Thesis, University of Sussex, 2018. http://sro.sussex.ac.uk/id/eprint/78272/.

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This thesis extends the current scholarship of the social impact of the First World War by analysing the influence of the contribution of the Indian soldiers on the Western Front on civilian and military perceptions of Indian people and how this varied between those who encountered Indian soldiers in person and those who did not. The work sits on the historiographical boundary of the First World War, Empire and the social history of Britain in the post war years and makes use of newspapers, first person accounts and manuscript sources. The impact upon the civilian population is analysed by examining the manner in which Indian people were represented in the media in the years before the war and comparing this with later representations in the years during and after the war. The work of Porter and Mackenzie and the ongoing debate about the significance of the Empire to the British people is used to ground the argument. The thesis finds that, despite an increased awareness and interest in India and its people during the war, the public soon settled into a pre-war apathy towards its Empire. The military chapters briefly examine the history of the Indian Army and its time in France and the changes made by the British Army to facilitate the service of the Indian soldiers in Europe. It discusses the negative view of the Indian Corps which has been perpetuated by historians during the twentieth century and provides contradictory arguments against a number of these assertions. The thesis concludes that, while the Indian Corps' time in France positively impacted on British civilian and military opinion of Indian people, those who directly encountered them formed the most favourable views.
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Zachreson, Matthew R. "Comparing Theory and Experiment for Analyte Transport in the First Vacuum Stage of the Inductively Coupled Plasma Mass Spectrometer." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3538.

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The Direct Simulation Monte Carlo algorithm as coded in FENIX is used to model the transport of trace ions in the first vacuum stage of the inductively coupled plasma mass spectrometer. Haibin Ma of the Farnsworth group at Brigham Young University measured two radial trace density profiles: one 0.7 mm upstream of the sampling cone and the other 10 mm downstream. We compare simulation results from FENIX with the experimental results. We find that gas dynamic convection and diffusion are unable to account for the experimentally-measured profile changes from upstream to downstream. Including discharge quenching and ambipolar electric fields, however, makes it possible to account for the way the profiles change.
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Zachreson, Matthew R. "Comparing Theory and Experiment for Analyte Transport in the First Vacuum Stage of the Inductively Coupled Plasma Mass Spectrometer." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5610.

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The inductively coupled plasma mass spectrometer (ICP-MS) has been used in laboratories for many years. The majority of the improvements to the instrument have been done empirically through trial and error. A few fluid models have been made, which have given a general description of the flow through the mass spectrometer interface. However, due to long mean free path effects and other factors, it is very difficult to simulate the flow details well enough to predict how changing the interface design will change the formation of the ion beam. Towards this end, Spencer et al. developed FENIX, a direct simulation Monte Carlo algorithm capable of modeling this transitional flow through the mass spectrometer interface, the transitional flow from disorganized plasma to focused ion beam. Their previous work describes how FENIX simulates the neutral ion flow. While understanding the argon flow is essential to understanding the ICP-MS, the true goal is to improve its analyte detection capabilities. In this work, we develop a model for adding analyte to FENIX and compare it to previously collected experimental data. We also calculate how much ambipolar fields, plasma sheaths, and electron-ion recombination affect the ion beam formation. We find that behind the sampling interface there is no evidence of turbulent mixing. The behavior of the analyte seems to be described simply by convection and diffusion. Also, ambipolar field effects are small and do not significantly affect ion beam formation between the sampler and skimmer cones. We also find that the plasma sheath that forms around the sampling cone does not significantly affect the analyte flow downstream from the skimmer. However, it does thermally insulate the electrons from the sampling cone, which reduces ion-electron recombination. We also develop a model for electron-ion recombination. By comparing it to experimental data, we find that significant amounts of electron-ion recombination occurs just downstream from the sampling interface.
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TOTANI, DANTE. "Photodetector calibration and first calorimetric energy reconstruction of beam events from LAr scintillation light in ProtoDUNE-Single Phase experiment." Doctoral thesis, Università degli Studi dell'Aquila, 2020. http://hdl.handle.net/11697/148697.

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ProtoDUNE Single Phase at CERN is the large scale prototype for the far detector of the future DUNE experiment. ProtroDUNE is in stable operation since Oct. 2018 at the CERN Neutrino Platform. Test beam data in the energy range of sub-GeV to a few GeV were collected in fall 2018 providing a set of key measurements. Particles (electrons, protons, pions, muons and kaons) are identified combining informations from a set of beam-line detectors (Time of Flight, Cherenkov) and TPC reconstruction. Three different photon collection technologies are utilized for the Photo Detector System modules. Each is designed to convert incident Liquid Argon scintillation photons (around 128 nm, in the Vacuum-UV range) into longer wavelength photons using photofluorescent compounds as wavelength shifters (WLS). Visible light is trapped within the module, a portion of which is eventually incident on an array of silicon photomultiplier photo-sensors. Each PD module has been fully characterized, providing calibration, single photo electron (SPE) response, signal-to-noise ratio (SNR), stability over time and photon detection eciency (PDE). Results of the protoDUNE-SP Photo Detector System response are presented, in particular with the Arapuca component, providing first calorimetric energy measurements and particle ID of beam events from LAr scintillation light signals.
ProtoDUNE Single Phase at CERN is the large scale prototype for the far detector of the future DUNE experiment. ProtroDUNE is in stable operation since Oct. 2018 at the CERN Neutrino Platform. Test beam data in the energy range of sub-GeV to a few GeV were collected in fall 2018 providing a set of key measurements. Particles (electrons, protons, pions, muons and kaons) are identified combining informations from a set of beam-line detectors (Time of Flight, Cherenkov) and TPC reconstruction. Three different photon collection technologies are utilized for the Photo Detector System modules. Each is designed to convert incident Liquid Argon scintillation photons (around 128 nm, in the Vacuum-UV range) into longer wavelength photons using photofluorescent compounds as wavelength shifters (WLS). Visible light is trapped within the module, a portion of which is eventually incident on an array of silicon photomultiplier photo-sensors. Each PD module has been fully characterized, providing calibration, single photo electron (SPE) response, signal-to-noise ratio (SNR), stability over time and photon detection eciency (PDE). Results of the protoDUNE-SP Photo Detector System response are presented, in particular with the Arapuca component, providing first calorimetric energy measurements and particle ID of beam events from LAr scintillation light signals.
ProtoDUNE Single Phase at CERN is the large scale prototype for the far detector of the future DUNE experiment. ProtroDUNE is in stable operation since Oct. 2018 at the CERN Neutrino Platform. Test beam data in the energy range of sub-GeV to a few GeV were collected in fall 2018 providing a set of key measurements. Particles (electrons, protons, pions, muons and kaons) are identified combining informations from a set of beam-line detectors (Time of Flight, Cherenkov) and TPC reconstruction. Three different photon collection technologies are utilized for the Photo Detector System modules. Each is designed to convert incident Liquid Argon scintillation photons (around 128 nm, in the Vacuum-UV range) into longer wavelength photons using photofluorescent compounds as wavelength shifters (WLS). Visible light is trapped within the module, a portion of which is eventually incident on an array of silicon photomultiplier photo-sensors. Each PD module has been fully characterized, providing calibration, single photo electron (SPE) response, signal-to-noise ratio (SNR), stability over time and photon detection eciency (PDE). Results of the protoDUNE-SP Photo Detector System response are presented, in particular with the Arapuca component, providing first calorimetric energy measurements and particle ID of beam events from LAr scintillation light signals.
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Hess, Paul William. "Improving the Limit on the Electron EDM: Data Acquisition and Systematics Studies in the ACME Experiment." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11679.

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The ACME collaboration has completed a measurement setting a new upper limit on the size of the electron's permanent electric dipole moment (EDM). The existence of the EDM is well motivated by theories extending the standard model of particle physics, with predicted sizes very close to the current experimental limit. The new limit was set by measuring spin precession within the metastable H state of the polar molecule thorium monoxide (ThO). A particular focus here is on the automated data acquisition system developed to search for a precession phase odd under internal and external reversal of the electric field. Automated switching of many different experimental controls allowed a rapid diagnosis of major systematics, including the dominant systematic caused by non-reversing electric fields and laser polarization gradients. Polarimetry measurements made it possible to quantify and minimize the polarization gradients in our state preparation and probe lasers. Three separate measurements were used to determine the electric field that did not reverse when we tried to switch the field direction. The new bound of |de|< 8.7 × 10-29 e cm is over an order of magnitude smaller than previous limits, and strongly limits T-violating physics at TeV energy scales.
Physics
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Antunovic, Biljana. "A First Measurement of the Charged Current DIS Cross Sections with Longitudinally Polarised Electrons in the H1 Experiment at HERA." Diss., lmu, 2007. http://nbn-resolving.de/urn:nbn:de:bvb:19-72342.

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Schwarz, Johannes Simon [Verfasser], and G. [Akademischer Betreuer] Drexlin. "The Detector System of the KATRIN Experiment - Implementation and First Measurements with the Spectrometer / Johannes Simon Schwarz. Betreuer: G. Drexlin." Karlsruhe : KIT-Bibliothek, 2014. http://d-nb.info/1056955929/34.

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Poletti, Davide. "High fidelity maps of the CMB polarization from the first two campaigns of the POLARBEAR experiment and their statistical exploitation." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCC274/document.

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Cette thèse s'intéresse au problème de la production des cartes du fond diffus cosmologique (CMB) en présence du filtrage. Les observations du CMB ont constamment affiné notre compréhension de l'univers au cours des dernières décennies. La caractérisation de la composante rotationnelle de sa polarisation, les modes-B, devrait apporter des informations précieuses sur l'univers primordial et récent, ainsi que sur la physique fondamentale.Afin d'extraire ces contraintes uniques à partir du faible signal des modes B, la qualité et la taillé des données des expériences CMB ont invariablement augmenté. Leur traitement pose de sérieuses difficultés. La reconstruction de la carte du ciel observée réduit par plusieurs ordres de grandeur le volume des données, tout en essayant de préserver l'information cosmologique. Dans ce processus, les données brutes sont généralement filtrées afin d'éliminer les signaux parasites d'origines instrumentales ou astrophysiques. Cette thèse illustre le formalisme permettant d'effectuer des opérations générales de filtrage et de les incorporer dans la procédure de cartographie. Les conditions réalistes dans lesquelles cette estimation non biaisée du ciel peut réussir sont également étudiées, à la fois de manière général et dans le contexte spécifique des expériences au sol. Ce nouveau formalisme a été implémenté dans un code, extrêmement parallélisé, pour la production des cartes. Il est capable de reconstruire le ciel observé de manière fidèle et de caractériser ses propriétés statistiques. La méthodologie et l'outil sont ensuite appliqués à la première et deuxième saison de POLARBEAR, une des expériences de premier plan dans la chasse aux modes-B
This thesis concerns the cosmic microwave background (CMB) map-making problem in the presence of filtering. The observations of the CMB kept refining our understanding of the universe over the past decades. The characterisation of its curl-like polarisation pattern - the so-called B-modes - is expected to convey invaluable information on both the primordial and the late universe as well as on fundamental physics.In order to extract these unique constraints from the faint B-mode signal, the quality and the size of CMB datasets have been constantly increasing, posing serious challenges for data analysis. The reconstruction of the map of the observed sky compresses by many orders of magnitude the data volume, white striving for preserving ail the cosmological information. In this process, the raw data are typically filtered in order to remove unwanted signais of instrumental or astrophysical origins. This thesis illustrates the formalism for performing general filtering operations and for incorporating them in the map-making procedure. The realistic circumstances under which this unbiased estimation of the sky signal can succeed are also investigated, both in general and in the specific context of ground-based experiments. This new formalism has been innplemented in a massively parallel map-making code, capable of producing high fidelity renditions of the sky as well as their detailed statistical characterisation. The methodology and the tool are then applied to the analysis of the first and second season data POLARBEAR, one of the leading experiments in the B-modes quest
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Matsuoka, Kodai. "Measurement of the Neutrino Beam with the Muon Monitor and the First Result of the T2K Long-Baseline Neutrino Oscillation Experiment." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/142584.

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31

Schoppmann, Stefan [Verfasser], Achim [Akademischer Betreuer] Stahl, and Christopher Henrik V. [Akademischer Betreuer] Wiebusch. "First Measurement of $\theta_13}$ with the final two detector setup of the double chooz experiment / Stefan Schoppmann ; Achim Stahl, Christopher Wiebusch." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130590747/34.

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Lambacher, Marion. "Study of fully hadronic ttbar decays and their separation from QCD multijet background events in the first year of the ATLAS experiment." Diss., lmu, 2007. http://nbn-resolving.de/urn:nbn:de:bvb:19-76034.

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33

Weigel, Andreas [Verfasser], and Klaus [Akademischer Betreuer] Blaum. "Detection Electronics Design and First Observation of Bound-Electron Spin Transitions at the ALPHATRAP g-Factor Experiment / Andreas Weigel ; Betreuer: Klaus Blaum." Heidelberg : Universitätsbibliothek Heidelberg, 2019. http://d-nb.info/1177695561/34.

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34

Athayde, Marcondes De André João Pedro. "Evaluation of the pi0 background for the nu_e appearance search in the T2K experiment : First study of the leptonic CP violation phase." Palaiseau, Ecole polytechnique, 2012. https://pastel.hal.science/docs/00/74/98/53/PDF/JP_thesis.pdf.

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L'expérience T2K est une expérience de recherche d'oscillation de saveur de neutrinos utilisant une base longue et la technique du faisceau hors axe. Dans T2K, un faisceau de neutrino est produit dans l'accélérateur J-PARC à Tokai, et est détecté auprès du détecteur Super Kamiokande (SK) à Kamioka, qui se situe à 295 km de Tokai. Cet accélérateur produit un faisceau très pur de nu_mu. Au cours de la propagation des neutrinos entre leur point de production et SK, ils peuvent changer de saveur. C'est ce phénomène que l'on appelle oscillation de saveur des neutrinos. L'objectif principal de T2K est de mesurer certains paramètres décrivant l'oscillation de saveur des neutrinos, et plus particulièrement les paramètres theta13 et deltaCP. Cette estimation est réalisée via la mesure de la probabilité d'oscillation nu_mu -> nu_e, par la recherche d'apparition de nu_e. En 2011, l'expérience T2K a été la première à observer l'apparition de nu_e et a ainsi pu exclure, à 2. 5 sigma, une valeur nulle de theta13. Cette thèse présente le travail réalisé pour estimer l'erreur systématique de l'efficacité de reconstruction du bruit de fond pi0. Celui-ci est l'une des principales sources d'erreur affectant la recherche d'apparition de nu_e par la détection d'événements quasi-élastique à courant chargé à SK. Deux méthodes différentes et complémentaires ont été développées. Dans un premier temps, nous avons commencé le développement d'un nouvel outil qui reproduit partiellement la topologie des événements physiques, et en parallèle, nous avons crée un échantillon spécifique pour estimer l'incertitude systématique de l'efficacité de reconstruction des événements pi0. Ce dernier résultat a été utilisé dans l'analyse officielle d'apparition de nu_e publiée en 2011. Le nouvel échantillon produit sera également utilisé dans les futures analyses d'oscillation. En tenant compte de la valeur récemment mesurée de theta13 par des expériences faites auprès de réacteur, nous présentons dans cette thèse la première étude de la phase de violation CP dans le secteur leptonique (deltaCP) en utilisant les données nu_e de T2K
The T2K experiment is an off-axis long baseline neutrino flavour oscillation experiment. In T2K, the neutrino beam produced by an accelerator at J-PARC, Tokai, is detected using the Super Kamiokande (SK) detector, Kamioka, located 295 km away from Tokai. The accelerator produce a very pure nu_mu beam. During the propagation of neutrinos between their production point and SK they may change flavour. This effect is the neutrino flavour oscillation. The main objective of T2K is to measure some parameters describing the neutrino flavour oscillation, in particular of theta13 and deltaCP. This determination is performed by measuring the nu_mu -> nu_e oscillation probability, via the nu_e appearance search. In 2011, T2K was the first experiment to observe nu_e appearance and published a 2. 5 sigma evidence that theta13 is not null. In this thesis we present the work done on the evaluation of the systematic error on the pi0 background reconstruction efficiency. The pi0 background is one of the main background sources affecting the nu_e appearance search through the detection of nu_e charged current quasi-elastic events at SK. Two different and complementary approaches have been developed. First, we have started developing a new device that partially reproduces the topology of physics events. Second, we have created a specific sample to estimate the systematic uncertainty of pi0 events reconstruction efficiency. This result was used in the official 2011 nu_e search. Furthermore, results from this sample will be used in future extended oscillation analysis. We also present the first study of the leptonic CP violation phase (deltaCP) using T2K nu_e data, assuming the recently measured value of theta13 by reactor experiments
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35

Skambraks, Sebastian [Verfasser], and Christian [Akademischer Betreuer] Kiesling. "Efficient physics signal selectors for the first trigger level of the Belle II experiment based on machine learning / Sebastian Skambraks ; Betreuer: Christian Kiesling." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2020. http://d-nb.info/1229835776/34.

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36

Takada, Atsushi. "Development of advanced Compton imaging camera with gaseous electron tracker and first flight of sub-MeV gamma-ray imaging loaded-on-balloon experiment." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/73213.

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37

Lancaster, Mark. "The design of a first level tracking trigger for the ZEUS experiment and studies for low-x physics in electron-proton collisions at HERA." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306051.

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38

Davies, Eleanor Lucy. "Electron and hadronic recoil calibration for the first measurement of the mass of the W boson by the ATLAS experiment at the Large Hadron Collider." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:61c91234-837d-4462-9e29-c317f90001ed.

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This thesis presents work towards the first measurement of the mass of the W boson (mW) at ATLAS at the Large Hadron Collider using √s = 7 TeV collision data taken in 2011. The electron energy calibration is presented, including a detailed study of the linearity of the ATLAS electromagnetic calorimeter. Separately, the measurement of the W boson recoil is calibrated using Z boson events. Recoil corrections for the underlying event, pileup, recoil magnitude resolution, recoil angular resolution and recoil response mismodelling are determined, with statistical uncertainties on these corrections corresponding to an estimated uncertainty on mW of 3.9 MeV. The corrections for calorimeter non-linearity and recoil modelling improve the description of the data, though systematic biases remain. To achieve a precision commensurate with the statistics of the data, these biases will need to be understood.
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39

Bendtz, Katarina. "Searches for Massive Highly Ionising Particles at the ATLAS Experiment and in Polar Volcanic Rocks, and Performance Studies of the First Level ATLAS Trigger System." Doctoral thesis, Stockholms universitet, Fysikum, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-127981.

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The Standard Model (SM) of particle physics describes the elementary particles and their interactions. Despite passing a number of high precision falsification tests, it is argued that the SM suffers from a number of shortcomings. Many Beyond the Standard Model (BSM) theories have therefore been postulated. Exotic highly ionising particles such as magnetic monopoles and Highly Electrically Charged Objects (HECOs), with masses at or above the TeV-scale, are predicted in many of these theories. Monopoles arise naturally in grand unification theories. Proposed candidates for HECOs are Q-balls, strangelets and micro-black hole remnants. The Large Hadron Collider (LHC) at CERN is the world's largest and most powerful particle accelerator, colliding protons at centre-of-mass energies up to 13 TeV. One of the main purposes of the LHC is to search for particles beyond the SM. The research presented in this thesis comprises a search for magnetic monopoles and HECOs at one of the largest of the LHC detectors, the ATLAS detector. In addition, studies were made on the performance of the ATLAS trigger system, which is responsible for making the initial online selection of interesting proton-proton events. The search for monopoles and HECOs at ATLAS was conducted using a customized trigger and selection variables optimized for the non-standard particle signature in ATLAS. The dataset corresponds to an integrated luminosity of 7.0 fb^{-1} and the centre-of-mass energy was 8 TeV. No events were observed and upper limits on production cross-sections were set for monopoles and HECOs of mass 200-2500 GeV and charge in the range $0.5-2.0$ g_D, where g_D is the Dirac charge, and 10 - 60 e, respectively. Magnetic monopoles were also sought in polar volcanic rock using a SQUID magnetometer at ETH, Zürich. No candidates were found leading to limits on the monopole density in polar igneous rocks of 9.8 * 10^{-5}/gram.
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40

Leding, Albin. "Optimized design recommendation for first pharmacokinetic in vivo experiments for new tuberculosis drugs using pharmacometrics modelling and simulation." Thesis, Uppsala universitet, Institutionen för farmaci, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447311.

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Tuberculosis, the leading cause of death by a single infection disease caused by bacteria, requires long treatments and the bacteria are prone to develop drug resistance. Therefore, new efficient treatment regiments needs developing, which requires new tools for drug development. A major reason for discontinuance of a drug under development is undesired pharmacokinetic properties. Therefore, it is important to have early information of this, preferably the first time the drug is tested in animals. The first in vivo pharmacokinetic experiment is often done in mice and the only information present at this stage are often in vitro values and physicochemical properties. Physiological-based pharmacokinetic modelling can be used to extrapolate from in vitro to in vivo values. From this, the first in vivo pharmacokinetic experiment can be designed, often with the goal of reducing the amount of mice. This goal is one of the three R.s and it is called Reduction. To explore the Reduction of an experiment population pharmacokinetic modelling can be utilized via exploration of the imprecision, bias and probability of an informative experiment to evaluate if a design meets the goal of Reduction. In this report a recommendation of the first in vivo pharmacokinetic experiment is presented. This is based on in vitro values and physicochemical properties that are common in anti-tuberculosis drugs. If the probability of an informative experiment is critical, a terminal sampling of 40 mice is recommended. If imprecision and bias are necessary, zipper sampling of 10 mice is recommended.
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41

Schneider, Fabian [Verfasser]. "First steps of the ECHo experiment: Penning-trap mass measurements of the 163Ho electron capture process and implantation of ultrapure Ho into microcalorimeter arrays / Fabian Schneider." Mainz : Universitätsbibliothek Mainz, 2016. http://d-nb.info/1104958821/34.

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42

Grosse, Jens [Verfasser], Marco [Akademischer Betreuer] Scharringhausen, Hansjörg [Gutachter] Dittus, and Claus [Gutachter] Braxmaier. "Thermal and Mechanical Design and Simulation for the first high precision Quantum Optics Experiment on a Sounding Rocket / Jens Grosse ; Gutachter: Hansjörg Dittus, Claus Braxmaier ; Betreuer: Marco Scharringhausen." Bremen : Staats- und Universitätsbibliothek Bremen, 2016. http://d-nb.info/1121173071/34.

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43

William, Simon N. "Twenty-first century citizens' polis : a democratic experiment in electronic public participation in science and technology decision-making using mobile telephones, risk and health as a case study." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54467/.

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This thesis is an original, empirical contribution to the topic of public participation in science and technology (S&T) decision-making. This thesis introduces the Citizens' POLIS (Participatory On-Line Interactive System): an innovative, multi-method, multi stage, hypermedia process for public participation in S&T decision-making. The purpose of the thesis is twofold: 1. to conduct and describe an actual public participation process, and to present the results (the participants' decisions) of this process in an accessible format for a wide variety of audiences (including public and policy audiences) 2. To serve also as a piece of social science research, and to analyse the results (the participant's deliberation) of this research in a critical manner so as to contribute to academic debates (i.e. for predominately academic audiences). This thesis has been borne of two stimuli: an observation about the limits of the existing literature and a consideration about the philosophical nature of public participation and of social science in general. It has been noted from the literature that there has been, since the early flourish in the 1970s, relatively few examples of public participation process organised, not by government or 'official' bodies, but by university-based social scientists. This thesis is informed by the Pragmatist philosophy of John Dewey. Dewey's Pragmatism has much to offer the study of public participation in S&T decision-making. It places an epistemic emphasis on experimentation on understanding something through trying something out. As such, the rationale for this thesis is that by organising a public participation process for oneself - i.e. experimenting with it - is the best way to understand what constitutes a 'good' public participation process. The results of this thesis are trifurcate, split across the substantive, theoretical and methodological. The substantive findings are related to what the citizens thought of the issue, in this case 'mobile telephones, risk and health'. Participants, it was found, were on the whole 'not overly concerned' by this issue. The theoretical findings contribute to academic understanding on prominent Science and Technology Studies (STS) concepts such as 'precaution', 'risk'; and 'expertise'. They seek to add a new perspective to our understandings - one provided by an informed and reasoned deliberation among citizens in a designated institutional space. The methodological findings contribute to our understanding of what constitutes a 'good' participation process - and serves as an empirical evaluation of a social-science led public participation process.
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Siddall, Yvonne Robena. "An experiment comparing the effects of two techniques that elicit the relaxation response on stress reduction and cognitive functioning in first year law students at Southern Illinois University at Carbondale." W&M ScholarWorks, 1985. https://scholarworks.wm.edu/etd/1539618438.

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The purpose of this study was to investigate the relationship between eliciting the relaxation response in first year law students and academic performance.;First year law students at Southern Illinois University ware chosen for this study. Law students were chosen because their course of study was rigorous and stress producing and every student had the same courses during the first year.;There were two treatment groups and a non-treatment control group. One treatment group was taught Benson's Relaxation Procedure and the other was taught a classical eye fixation, self-hypnosis technique. Stress assessments were conducted every other week for an entire semester.;It was hypothesized that (1) the students would be able to lower their anxiety levels from the beginning of the term to the end of the term, (2) that the treatment groups would have lower stress levels than the non-treatment group and (3) that the self-hypnosis group with its motivational statements would show the greatest improvement in academic performance over the other two groups.;It was concluded that there were no significant differences between any of the groups. The treatment groups did not practice enough to be able to assess whether either of the techniques was helpful in reducing stress or in improving academic performance.;Further study is needed to determine if these techniques when used conscientiously will reduce stress and improve academic performance. In addition, comparisons between self-hypnosis and Benson's relaxation procedure still need to be made to determine the role of relaxation in hypnosis.
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45

Berry, Autumn C. "The Historical Evolution of Malone: A Challenge to Keep Christ First in the Journey from Bible College to Christian Liberal Arts University." Malone University Undergraduate Honors Program / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ma1429718316.

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46

Wolf, Anton [Verfasser]. "Search for pair-produced first and second generation scalar leptoquarks in pp collisions at sqrts}=13 TeV & work with the liquid argon purity monitoring system in the ATLAS experiment / Anton Wolf." Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2021. http://d-nb.info/1229617132/34.

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47

Bode, Tobias [Verfasser], Stefan [Akademischer Betreuer] [Gutachter] Schönert, and Bela [Gutachter] Majorovits. "The neutrinoless double beta decay experiment GERDA Phase II: A novel ultra-low background contacting technique for germanium detectors and first background data / Tobias Bode ; Gutachter: Stefan Schönert, Béla Majorovits ; Betreuer: Stefan Schönert." München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/111660437X/34.

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48

Kühn, Susanne [Verfasser], and Karl [Akademischer Betreuer] Jakobs. "First measurement of the Z/gamma*->tautau cross section in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS experiment at the LHC = Erste Messung des Z/gamma*->tautau Wirkungsquerschnittes in Proton-Proton-Kollisionen bei einer Schwerpunktsenergie von sqrt(s)=7 TeV mit dem ATLAS-Experiment am LHC." Freiburg : Universität, 2012. http://d-nb.info/1123466831/34.

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Stahl, Marian [Verfasser], and Stephanie [Akademischer Betreuer] Hansmann-Menzemer. "First observation of the decay $\Lambda_b^0 \rightarrow \Lambda_c^+ \barD}^(\ast)0} K^-$ in preparation of a pentaquark search in the $\Lambda_c^+ \bar{D}^{(\ast)0}$ system at the LHCb experiment / Marian Stahl ; Betreuer: Stephanie Hansmann-Menzemer." Heidelberg : Universitätsbibliothek Heidelberg, 2018. http://d-nb.info/1177253003/34.

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50

Jones, R. J. "First investigation and experiments in Welsh speech recognition." Thesis, Swansea University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637460.

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The work described in this thesis aims to efficiently develop automatic speech recognition (ASR) in languages for which no such technology currently exists. The focus is on minority languages such as Welsh. An overview of the challenges of ASR development in lesser-spoken languages is presented. The specification of a 2000-speaker database for Welsh is described, with special reference to a novel lexicon searching process for Celtic minority languages. The collection of this database is also detailed, along with an analysis of the pitfalls facing those collecting minority language speech resources for ASR, and ways to overcome them. ASR is carried out on a small subset of the Welsh database (no more than 350 male speakers uttering one isolated digit each). This simulates a worst-case scenario for a language having only limited funds for a database collection. It is found that for Welsh, together with English and German, no more than 100-125 training speakers are required to reach a point beyond which the improvement in recognition performance is logarithmic. To reduce the number of training speakers beyond which this logarithmic improvement occurs, a model combination method similar to Yoshizawa et al.'s (Eurospeech 2001) is investigated. Model combination is achieved by creating a phonetic map between Welsh and German, in a manner similar to that proposed by Dalsgaard et al. (Eurospeech 1991). Use of the model combination method reduces the point at which logarithmic improvement occurs from 100-125 to 75-100 speakers.
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