49 research outputs found
MANAGERIAL DECISION MAKING AUGMENTATION THROUGHOUT INFORMATION SOLUTIONS: THE CONCEPTUAL SYSTEM
The dynamism of the environment where decisions are being performed becomes ever more turbulent. Strategic thinker in order to drive his organization towards success and sustain it on a competitive level must take fast actions and consider vast number of complex factors. This requires deep insight into the organization and fast way of processing data in order to develop possibly unambiguous judgments. Human mind, without any support, would not cope with processing such amount of information what would lead to poor managerial decision. It is known that human requires support of his cognitive thinking processes and current technology harnessed in appropriate way would enable decision maker to perform fast, yet precise decisions that are crucial for enterprise to successfully compete on the turbulent market.
This thesis introduces a conceptual system of decision making augmentation. Such system would harness the modern processing power of computers within an ERP based infrastructure to collect data from across the organization and process it accordingly. Processed, grouped, and filtered data would be presented via graphical, interactive, and highly adaptive interface allowing decision maker to quickly analyze data and simulate possible opportunities in order to perform high quality decision making.
This concept is built on theory review synthetized in context of the idea; three propositions build a core of the further analysis which at last creates a foundation for the system development. This thesis does not introduce to technical aspects of the system but to an idea of how decision maker and organization could potentially benefit from it.fi=OpinnÀytetyö kokotekstinÀ PDF-muodossa.|en=Thesis fulltext in PDF format.|sv=LÀrdomsprov tillgÀngligt som fulltext i PDF-format
ICASE
This report summarizes research conducted at the Institute for Computer Applications in Science and Engineering in the areas of (1) applied and numerical mathematics, including numerical analysis and algorithm development; (2) theoretical and computational research in fluid mechanics in selected areas of interest, including acoustics and combustion; (3) experimental research in transition and turbulence and aerodynamics involving Langley facilities and scientists; and (4) computer science
PropriĂ©tĂ©s du Boson de Higgs se dĂ©sintĂ©grant en 4 leptons au LHC dans lâexpĂ©rience ATLAS : masse, limite sur la contribution Ă haute masse et sur la largeur
The theme of the analyses presented in this Thesis is the measurement of the Higgs boson properties in the HâZZâ4l decay channel with the ATLAS experiment at the LHC. A detailed overview on the electron calibration process is first presented. In this regard, the track-cluster combination algorithm is found to improve the energy resolution of low ET electrons by exploiting both track and cluster information into a maximum likelihood fit. The improvement in resolution is approximately 18-20% for J/Κ dielectron decays, and of the order of 3% for Zâee events. In addition, the E-p combination algorithm has also been applied to the HâZZâ4l channel with electrons in the final state resulting in a non-negligible gain on the invariant mass distribution (4-5%). Secondly, the Higgs mass and its total width are evaluated in the HâZZâ4l channel. The Higgs mass is measured in the 4l decay channel with particular interest on the beneficial effects brought by the improved electron calibration and the track-cluster combination. The mass on the full 2011 and 2012 datasets is worked out with a 2-dimensional fit on the invariant mass of the 4 lepton final state, m4l, and on a boosted decision tree (BDT)-based output conceived against the main ZZ irreducible background and constructed on variables that are sensitive to the Higgs boson spin-parity state. Regarding the Higgs width, results are based on a relatively recent approach aimed at indirectly constraining the Higgs boson width by exploiting the m4l high-mass region where the Higgs boson acts as a propagator. The Higgs production cross section in the on-shell m4l region, where the Higgs boson is a resonance, depends on the total Higgs width, whereas this is not the case for the high mass m4l (off-shell). Limits on the Higgs width can be therefore set when merging the off-shell results with the on-shell ones. A limit of ⌠6.7 times ÎSMH is obtained in the four lepton channel. Secondly, by combining with the on-shell measurement and using all the decay channels in the analysis, i.e. ZZâ4l, ZZâ2l2Îœ and WWâlÎœlÎœ, the results lead to an observed (expected) 95% C.L. upper limit on the Higgs boson total width of 22.7 (33.0) MeV (4.2 MeV is the Standard Model predicted Higgs width at mH=125 GeV).The last section of the thesis is devoted to the evaluation of the Higgs width at âs=14 TeV in the high luminosity scenario (High Luminosity LHC), 300 fbâ»Âč and 3000 fbâ»Âč, by employing the same techniques exploited in the previous Run 1 analysis at âs=8 TeV.Le thĂšme des analyses prĂ©sentĂ©es dans ce document est la mesure des propriĂ©tĂ©s du boson de Higgs se dĂ©sintĂ©grant dans le mode HâZZâ4l dans l'expĂ©rience ATLAS au CERN. Le document commence par un rĂ©sumĂ© dĂ©taillĂ© concernant la procĂ©dure d'Ă©talonnage des Ă©lectrons: l'algorithme de combinaison trace-cluster amĂ©liore la rĂ©solution en Ă©nergie (surtout pour les Ă©lectrons ayant une faible Ă©nergie transverse) en exploitant les informations du cluster et de la trace dans un ajustement par maximum de vraisemblance. L'amĂ©lioration en rĂ©solution est approximativement de 18-20% pour les dĂ©sintĂ©grations du J/Κ en di-Ă©lectrons, et 3% pour Zâee. Par la suite, la combinaison E-p est appliquĂ©e au canal HâZZâ4l avec Ă©lectrons dans l'Ă©tat final permettant dâobtenir un gain modĂ©rĂ© sur la distribution de la masse invariante (4-5%). En deuxiĂšme lieu, la masse du boson de Higgs et sa largeur sont estimĂ©es, en particulier afin de comprendre les effets apportĂ©s par l'utilisation de l'algorithme de combinaison trace-cluster. La masse a Ă©tĂ© calculĂ©e en se servant d'un ajustement Ă deux dimensions appliquĂ© sur la masse invariante m4l et un score de discrimination du signal contre le bruit de fond ZZ*. Cette discrimination est obtenue en exploitant les corrĂ©lations angulaires dont les distributions sont sensibles au spin et Ă la paritĂ© du boson de Higgs. LâĂ©tude sur la largeur du boson est ensuite dĂ©taillĂ©e : les rĂ©sultats sont basĂ©s sur une approche qui vise Ă contraindre cette largeur en analysant la rĂ©gion de haute masse m4l oĂč le boson de Higgs se comporte comme un propagateur. La section efficace au pic de la rĂ©sonance (« on-shell ») dĂ©pend de la largeur totale du boson de Higgs, ce qui nâest pas le cas pour la production dans la rĂ©gion de haute masse (« off-shell »). Par consĂ©quent, des limites indirectes sur la largeur peuvent ĂȘtre dĂ©terminĂ©es en combinant les rĂ©gions « on-shell » et « off-shell ». Une limite Ă 6.7 fois la largeur Higgs ÎSMH est obtenue via le canal 4l. En combinant la mesure « on-shell » avec tous les canaux de dĂ©sintĂ©gration Ă©tudiĂ©s (notamment ZZâ4l, ZZâ2l2Îœ and WWâlÎœlÎœ), les rĂ©sultats aboutissent Ă une limite observĂ©e (attendue) sur la largeur totale de 22.7 (33.0) MeV. La derniĂšre partie de ce travail de thĂšse est consacrĂ©e Ă l'analyse sur la largeur du boson de Higgs en quatre leptons Ă haute (High-Luminosity LHC) luminositĂ© intĂ©grĂ©e (respectivement 300 fbâ»Âč et 3000 fbâ»Âč) : il sâagit dâune Ă©tude extrapolant Ă âs =14 TeV les techniques utilisĂ©es pour lâanalyse Ă 8 TeV (Run 1)
Bibliography of Lewis Research Center technical publications announced in 1984
This compilation of abstracts describes and indexes the technical reporting that resulted from the scientific and engineering work performed and managed by the Lewis Research Center in 1984. All the publications were announced in the 1984 issues of STAR (Scientific and Technical Aerospace Reports) and/or IAA (International Aerospace Abstracts). Included are research reports, journal articles, conference presentations, patents and patent applications, and theses
The position of the Turkish and Moroccan second generation in Amsterdam and Rotterdam: the TIES study in the Netherlands
The Dutch second generation of Turkish and Moroccan origin is coming of age and making a transition from education to the labour market. This first publication of the TIES Project (Towards the Integration of the European Second Generation) studies the social situation and views of this ethnic group, drawing on the research carried out in Amsterdam and Rotterdam in 2006-07 among the Dutch-born children of immigrants from Turkey and Morocco and a comparison group of young people (age 18-35) whose parents were born in the Netherlands.De Nederlandse tweede generatie van Turkse en Marokkaanse afkomst is volwassen aan het worden en de oudere cohorten van deze nog jonge populatie hebben inmiddels de overstap van het onderwijs naar de arbeidsmarkt gemaakt. Dit betekent dat nu gekeken kan worden naar de positie die deze tweede generatie inneemt in de Nederlandse samenleving. Deze eerste publicatie van het TIES project (Towards the Integration of the European Second Generation) behandelt een verscheidenheid aan onderwerpen met als doel de situatie en de denkbeelden van en over deze groepen in Amsterdam en Rotterdam in beeld te brengen