Dissertations / Theses on the topic 'Corrections'
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1
Poon, King-lai. "Historical development of the correctional services in Hong Kong." [Hong Kong : University of Hong Kong], 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12840701.
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Polizzi, David, Michael Braswell, and Matthew Draper. "Transforming Corrections: Humanistic Approaches to Corrections and Offender Treatment, 2nd Edition." Digital Commons @ East Tennessee State University, 2014. http://amzn.com/1611632862.
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Foreword / Hans Toch -- Introduction / David Polizzi, Michael Braswell -- A phenomenological approach to criminology / Christopher M. Aanstoos -- Phenomenological and existential approaches to crime and corrections / Hayden Smith, Kenneth Adams -- Offender objectification : implications for social change / John S. Ryals, Jr. -- Theorizing criminalized subjectivities : narrating silenced identities / Dawn Moore -- Dialogue : a unique perspective for correctional counseling / Matthew R. Draper, Mark S. Green, Ginger Faulkner -- The good lives model : a strength-based approach to offender rehabilitation / Tony Ward and Clare-Ann Fortune -- Transforming corrections through psychological jurisprudence redux : towards a radical philosophical and cultural critique / Bruce A. Arrigo -- Mutual respect and effective prison management / Terry A. Kupers -- Civility in prisons : a radical proposal / Catherine A. Jenks, John Randolph Fuller -- Varieties of restorative justice : therapeutic interventions in context / Lana A. McDowell, John T. Whitehead -- Ambiguous loss, concrete hope : examining the prison experience for mothers from an ambiguous loss framework / Beth Easterling -- How the "positive" can influence criminal behavior : growing out of criminal spin by positive criminology approaches / Natti Ronel and Dana Segev -- Correctional treatment and the human spirit : the context of relationship / Michael Braswell, Kristin Wells -- Psycho-spiritual roots of adolescent violence : the importance of rites of passage / Drake Spaeth -- Transforming meaning : the nexus between the utilization of the Rogerian framework and the social construction of pedophilic sex offenders / Roger Schaefer -- Developing therapeutic trust with court-ordered clients / David Polizzi -- Epilogue : toward a more humanistic future in corrections / David Polizzi.https://dc.etsu.edu/etsu_books/1073/thumbnail.jpg
3
Hall, Oliver Alexander. "Perturbative corrections in SHERPA." Thesis, Durham University, 2014. http://etheses.dur.ac.uk/10557/.
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The use of Monte Carlo event generators for the simulation of LHC collider experiments, has in recent years driven a demand for greater accuracy of predictions in such generators. This thesis will be concerned with the addition of certain perturbative corrections in the event generator SHERPA. In this vein a framework for the automatic calculation of the real correction terms is presented, based on the the subtraction mechanism of of Frixione, Kunszt and Signer. This resulting framework is implemented in the matrix element generator Amegic, which will then allow the calculation of the real components of an NLO QCD for any process; this can be supplemented with virtual corrections to provide a full NLO QCD prediction. This implementation is then rigorously tested and found to be consistent with known NLO results. This subtraction framework is then utilized to perform a series of tests on the relative efficiency of the FKS and Catani Seymour subtraction methods; these tests are conducted over multiple processes and the affect of the multiplicity of the state is investigated. In addition the contribution of photon induced processes to lepton and W boson production is discussed, taking into account contributions from the QED part of parton distribution functions and from equivalent photons in the Weizsaecker Williams approximation. Typically these processes contribute on the per cent level compared to standard quark and gluon-induced processes; however, when applying various cuts this picture may change and the photon induced processes may become significant.
4
Edwards, Bradley D., Michael Braswell, and Larry Miller. "Case Studies in Corrections." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu_books/177.
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Case Studies in Corrections invites the reader to analyze hypothetical situations confronted by judges, probation officers, inmates, correctional officers, counselors, clerics, and administrators. Concise but thorough introductions to each section provide background for assessing the scenarios. Thought-provoking questions stimulate reflection about possible courses of action and the potential consequences of choices made. The Sixth Edition encourages an interactive approach—whether rethinking effective punishment, analyzing the role of the community in corrections, or addressing ethical and legal issues.
Titles of related interest also available from Waveland Press: Haas-Alpert, The Dilemmas of Corrections: Multidisciplinary Perspectives, Fifth Edition (ISBN 9781577663980) and Quinn, Corrections: A Concise Introduction, Second Edition (ISBN 9781577662464).https://dc.etsu.edu/etsu_books/1197/thumbnail.jpg
5
Whitehead, Anita. "Privatization of Southern California local detention facilities." CSUSB ScholarWorks, 2001. https://scholarworks.lib.csusb.edu/etd-project/2084.
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Brusman, Lovins Lori. "An Empirical Examination of Variation in Effective Correctional Program Characteristics by Gender." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1367943832.
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Cox, Dawn A. "Factors for Success in Community-Based Corrections: A Regression Analysis." Youngstown State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1256923484.
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Cheung, Shu-kan Kenny. "A review of juvenile corrections in China and Hong Kong." [Hong Kong] : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13781212.
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Cheung, Chui-lan. "A critical analysis of probation service in Hong Kong." [Hong Kong : University of Hong Kong], 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12840610.
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Johnston, Sarah Ann. "A theoretical analysis of the impact of privatization upon corrections in Canada from a critical perspective /." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59619.
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Privatization of federal correctional services in Canada is extensive. It has gained considerable momentum since the present Conservative government came into power in 1984. Privatization has allowed the government to cut costs, but has not addressed the underlying issue: the high rate of delinquency. The author argues that, in the future, correctional services will not be purely private, but neither will they be wholly public. Correctional services and the operational aspects of corrections will involve a mix of the public and private sectors. Privatization will have its largest impact on concrete auxiliary services of the Correctional Service of Canada; to a lesser degree it will have an impact upon all or most post-release programmes. However, privatization should not affect penitentiaries that are classified as medium security and higher.
11
Song, Deqiang. "Misalignment corrections in optical interconnects." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3229549.
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Thesis (Ph. D.)--University of California, San Diego, 2006.Title from first page of PDF file (viewed October 18, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.
12
Kelly, David. "Itô corrections in stochastic equations." Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/54945/.
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This thesis contains two “projects”, both concerning the emergence of Itô corrections in stochastic equations. In the first project, we study Itô corrections in stochastic PDEs with multiscale structure. Namely, we show that a certain class of homogenisation systems display a correction of Itô type, when perturbed by a sufficiently irregular additive noise. In the second project, we look at Itô corrections for a general class of finite dimensional equations known as rough differential equations. Using a non-geometric theory of rough paths, we prove a generalised Itô-Stratonovich correction formula as well as a generalised Itô formula.
13
Lundberg, Linnea. "Dispersion Corrections at Planar Surfaces." Licentiate thesis, KTH, Teoretisk biologisk fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187462.
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When simulating a molecular system, a cutoff distance for interactions is often used to speed up the simulations. This is made at the cost of neglecting some interactions which will lead to inaccurate results for energy, pressure components and surface tension (for systems with surfaces). To compensate for the neglected long-range interactions, continuum corrections can be added to the surface tension, system energies and pressures. For a homogenous isotropic system this is straight-forward but for a system with a surface it is more complicated. In this work we have derived expressions for the corrections to the surface tension, system energies and pressures that are more general than previous results. When these corrections are added to multi-component systems with a surface (or single-component systems with vacuum) they compensate for the change in surface tension, system energy and pressures due to the finite cutoff. When simulating systems with no Coulomb-interactions, the structure of the system may change significantly if the cutoffs are too short. If this is the case then these corrections alone will not be enough. The solution is to add corrections to the force acting on each molecule added during the simulation, which we derive in this work. This solves the structural problem at low cutoffs and makes it possible to calculate an accurate surface tension independent of cutoff.
14
Huang, Ou. "Terrain Corrections for Gravity Gradiometry." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1339698991.
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Pealer, Jennifer A. "Correctional Rehabilitation and Therapeutic Communities: Reducing Recidivism Through Behavior Change (Routledge Innovations in Corrections)." Digital Commons @ East Tennessee State University, 2017. https://www.amzn.com/B06XPJB48M.
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Drawing on original research on the effectiveness of a therapeutic community (TC) in reducing recidivism among juvenile male offenders, Correctional Rehabilitation and Therapeutic Communities: Reducing Recidivism Through Behavior Change provides a comprehensive review of the current state of drug treatment for the offending population, especially the link between juvenile offending and substance abuse. The book assesses the factors predicting successful completion of treatment as well as the methodological limitation of previous TC program reviews, and suggests policy implication and routes for future research.
Using improvements such as multiple outcome criteria, long-term follow-up, matching groups on risk and needs, and the employment of a standardized instrument to measure program quality, Correctional Rehabilitation assesses the degree to which participation in the TC affects antisocial attitudes and reduces delinquency. Readers will explore how TCs can be designed to influence adolescent drug offenders and ultimately reduce recidivism. This book is essential reading for students, researchers, practitioners, and other stakeholders focusing on the development of treatment programs.https://dc.etsu.edu/etsu_books/1145/thumbnail.jpg
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Lee, Heejin. "Millennials as the Future of Corrections: A Generational Analysis of Public Policy Opinions." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1601992853432283.
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Poon, King-lai, and 潘景鼐. "Historical development of the correctional services in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1988. http://hub.hku.hk/bib/B31975586.
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Pozzorini, Stefano. "Electroweak radiative corrections at high energies /." Zürich, 2001. http://e-collection.ethbib.ethz.ch/show?type=extdiss&nr=2.
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Dasgupta, M. "Power suppressed corrections in quantum chromodynamics." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598295.
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The purpose of the research described in this dissertation, is to establish a bridge between perturbative and non-perturbative aspects of QCD. While it is remarkable that the factorisation theorems of QCD allow one the freedom to carry out perturbative calculations in most cases of interest, it cannot be forgotten that perturbation theory can never provide a complete description of strong interaction phenomena. The factorisation theorems themselves make allowance for non-perturbative effects by parametrising them through parton distributions and fragmentation functions, which has given rise to what has become known as QCD phenomenology. In this dissertation we adopt a phenomenological approach to the study of a certain class of non-perturbative effects which are manifested in terms that behave as an inverse power of the relevant hard scale. The idea underlying our approach is to examine the ambiguity of the perturbative series and then interpret it as representing non-perturbative effects. To make quantitative estimates we adopt an approach in which our predictions depend on supposedly universal parameters that can be extracted from experiment in the same spirit as parton distributions. These parameters are the moments of the strong coupling, which is assumed infrared finite. Within this approach we can relate the power corrections to different observables, due to the universality assumption. Knowledge of these parameters can be employed to constrain the form of the strong coupling at small scales which may allow a unique glimpse into the confinement domain. In this dissertation we make unambiguous predictions for power corrections to a wide variety of observables. These include DIS structure functions, fragmentation functions in both e+e- annihilation and DIS, and event shape variables. In most cases we observe that there is good support for the predictions made here, from experimental data.
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Breitenfellner, Andreas, Cuaresma Jesus Crespo, and Philipp Mayer. "Energy Inflation and House Price Corrections." Elsevier, 2015. http://dx.doi.org/10.1016/j.eneco.2014.08.023.
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We analyze empirically the role played by energy inflation as a determinant of downward
corrections in house prices. Using a dataset for 18 OECD economies spanning the last four
decades, we identify periods of downward house price adjustment and estimate conditional
logit models to measure the effect of energy inflation on the probability of these house price
corrections after controlling for other relevant macroeconomic variables. Our results give
strong evidence that increases in energy price inflation raise the probability of such corrective
periods taking place. This phenomenon could be explained by various channels: through the
adverse effects of energy prices on economic activity and income reducing the demand for
housing; through the particular impact on construction and operation costs and their effects on
the supply and demand of housing; through the reaction of monetary policy on inflation
withdrawing liquidity and further reducing demand; through improving attractiveness of
commodity versus housing investment on asset markets; or through a lagging impact of
common factors on both variables, such as economic growth. Our results contribute to the
understanding of the pass-through of oil price shocks to financial markets and imply that energy
price inflation should serve as a leading indicator for the analysis of macro-financial risks. (authors' abstract)
21
Cerdà, Sevilla M. "Higher order corrections for precision observables." Thesis, University of Liverpool, 2017. http://livrepository.liverpool.ac.uk/3010055/.
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Higher order corrections are a fundamental ingredient for the analysis of physical ob- servables. They are essential to improve the precision of theory predictions within the Standard Model which then lead to an increased sensitivity of these observables to physics beyond the Standard Model. In this thesis we compute higher order QCD corrections to the effective Lagrangian for weak decays. We combine previous results for the Next-to-Next-to-Leading order in the five-flavour theory with new matching calculations. This allows us to determine the effective Lagrangian in the four- and in the three-flavour theory for current-current and QCD penguin operators. We discuss explicitly the relevant steps required for a proper matching calculation, in particular the cancellation of the ultra-violet and infra-red divergences. We also introduce a new formalism that leads to scale and scheme independent intermediate results. Moreover the scheme change for the electroweak penguin operators at the Next-to-Leading or- der is calculated, and the one-loop and two-loop anomalous dimensions for a general number of flavours in the modern basis is presented for the first time in this thesis. In addition we present an updated QCD×QED running. Here a detailed discussion is provided to explain the problem with the singularities when the eigenvalues of the anomalous dimension matrix differ by a factor $2\beta_{00}^s$. Finally we apply the result to the theory prediction of the CP-conserving hadronic kaon decays, and the $\varepsilon^\prime/\varepsilon$ observable, reducing the perturbative uncertainty by a factor 0.12 at NNLO level.
22
Tracz, Szymon. "Radiative corrections to hadrons-photons interactions." Doctoral thesis, Katowice : Uniwersytet Śląski, 2018. http://hdl.handle.net/20.500.12128/6953.
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W pracy zostały przedstawione wyniki teoretycznych obliczeń dla procesów
anihilacji elektron-pozytron do hadronów+fotony. Został poruszony
szeroki zakres tematów ze szczególnym uwzględnieniem obliczeń poprawek
radiacyjnych i ich implementacji w generatorze Monte Carlo PHOKHARA.
Ważną część tej pracy stanowi modelowanie oddziaływań hadronów z fotonami.
Przedstawione są istotne tematy z punktu widzenia niezgodności pomiędzy
eksperymentalną, a przewidywaną w ramach Modelu Standardowego wartością anomalnego momentu magnetycznego mionu. Jednym z nich jest modelowanie
dwufotonowych form faktorów dla mezonów pseudoskalarnych, które
są istotne dla wyznaczenia wkładów od hadronowego rozpraszania światło-światło.
Drugim jest obliczenie poprawek radiacyjnych wyższego rzędu dla
przekroju czynnego na produkcję pary pionów, które stanowią istotny wkład
do analizy danych wykonywanej w eksperymentach BABAR i KLOE, których
pomiary nie zgadzają się pomiędzy sobą.
Kolejny rozważany w tej pracy temat jest związany z niezgodnościami
jakie obserwuje się w przypadku pomiaru promienia protonu przy użyciu różnych
metod eksperymentalnych. Modelowanie form faktorów nukleonowych
jest pierwszym krokiem w celu obliczenia pełnych poprawek radiacyjnych dla
procesu rozpraszania elektron-proton. Obliczenie wkładów od wymiany dwufotonowej
dla tego procesu wymagają znajomości form faktorów opisujących
przejścia pomiędzy różnymi stanami.
Ostatni temat porusza kwestię związane z produkcją stanów o dodatnich
wartościach własnych operatorów sprzężenia ładunkowego i parzystości.
Przedstawiony jest model na elektronowe szerokości połówkowe xc1 i xc2 oraz
zaproponowana jest reakcja w której ich obserwacja byłaby możliwa poprzez
interferencję z tłem pochodzącym od amplitud dla powrotu radiacyjnego.
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Andrianomena, Sambatra Hagatiana. "Relativistic corrections to weak lensing convergence." Doctoral thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20770.
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A fundamental issue in modern science is the dark energy problem - the apparent accelerating expansion of the universe. Many cosmological observations of the Cosmic Microwave Background (CMB), Baryon Acoustic Oscillation (BAO) and weak lensing have been carried out to try to understand the nature of this repulsive dark force. With the advent of advanced experiments like the Square Kilometer Array we enter the era of precision cosmology where measurements of effects such as weak lensing will be achieved at a sub percent level, implying strong constraints on dark energy. The full picture of weak lensing includes linear and non-linear correction terms to its standard formula. In this thesis we address the questions: Are some of these effects detectable? Under which conditions can we safely neglect them such that the analysis of future weak lensing observations is not biased? Induced by gravity, peculiar velocity of galaxies can potentially be used to probe the growth of structure in our universe. Peculiar velocities induce a lensing-like effect, which we consider as Doppler magnification. By developing new statistical tools which are based on Doppler magnification, we investigate the dark energy problem. These new statistical probes also enable us to explore the viability of other theories that attempt to account for the apparent acceleration of the cosmic expansion by modifying Einstein's General Relativity.
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Schaefer, Lacey. "Environmental Corrections: Making Offender Supervision Work." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1377875062.
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Duniya, Didam Gwazah Adams. "Relativistic corrections to the power spectrum." University of the Western Cape, 2015. http://hdl.handle.net/11394/4787.
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Philosophiae Doctor - PhDThe matter power spectrum is key to understanding the growth of large-scale structure in the Universe. Upcoming surveys of galaxies in the optical and HI will probe increasingly large scales, approaching and even exceeding the Hubble scale at the survey redshifts. On these cosmological scales, surveys can in principle provide the best constraints on dark energy (DE) and modified gravity models and will be able to test general relativity itself. However, in order to realise the potential of these surveys, we need to ensure that we are using a correct analysis, i.e. a general relativistic analysis, on cosmological scales. There are two fundamental issues underlying the general relativistic (GR) analysis. Firstly, we need to correctly identify the galaxy overdensity that is observed on the past light cone. Secondly, we need to account for all the distortions arising from observing on the past light cone, including redshift distortions (with all general relativistic effects included) and volume distortions. These general elativistic effects appear in the angular power spectra of matter in redshift space. We compute these quantities, taking into account all general relativistic large-scale effects, and including the important contributions from redshift space distortions and lensing convergence. This is done for self-consistent models of DE, known as ‘quintessence’, which have only been very recently treated in the GR approach. Particularly, we focus mainly on computing the predictions (i.e. the power spectra) that need to be confronted with future data. Hence we compute the GR angular power spectra, correcting the 3D Newtonian calculation for several quintessence models. We also compute the observed 3D power spectra for interacting DE (which until now have not previously been studied in the GR approach) – in which dark matter and DE exchange energy and momentum. Interaction in the dark sector can lead to large-scale deviations in the power spectrum, similar to GR effects or modified gravity. For the quintessence case, we found that the DE perturbations make only a small contribution on the largest scales, and a negligible contribution on smaller scales. Ironically, the DE perturbations remove the false boost of large-scale power that arises if we impose the (unphysical) assumption that the DE perturbations vanish. However, for the interacting DE (IDE) case, we found that if relativistic effects are ignored, i.e. if they are not subtracted in order to isolate the IDE effects, the imprint of IDE will be incorrectly identified – which could lead to a bias in constraints on IDE, on horizon scales. Moreover, we found that on super-Hubble scales, GR corrections in the observed galaxy power spectrum are able to distinguish a homogeneous DE (being one whose density perturbation in comoving gauge vanishes) from the concordance model (and from a clustering DE) – at low redshifts and for high magnification bias. Whereas the matter power spectrum is incapable of distinguishing a homogeneous DE from the concordance model. We also found that GR effects become enhanced with decreasing magnification bias, and with increasing redshift.
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Steber, William R. "Occupational stress among frontline corrections workers." Online version, 1998. http://www.uwstout.edu/lib/thesis/1998/1998steberw.pdf.
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Fitzgerald, Ryan Elizabeth. "Wind tunnel blockage corrections for propellers." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7363.
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Thesis (M.S.) -- University of Maryland, College Park, 2007.Thesis research directed by: Dept. of Aerospace Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Wu, Zhengwei. "Quantum Corrections for Fundamental Plasma Behaviors." Thesis, The University of Sydney, 2009. https://hdl.handle.net/2123/29229.
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Quantum plasmas have received considerable attention in recent years. The
quantum effects become important if the typical distance separating particles in a
plasma system becomes comparable or less than the de Broglie wavelength of the
particles. This condition will be satisfied when the Fermi temperature is greater than
thermal temperature of plasmas; thus quantum effects become important. The electrons
in the plasmas approach to a Fermi gas, their statistical behavior is described
by Fermi—Dirac distribution instead of classical Boltzman distribution.
Quantum hydrodynamics (QHD) is the most widely used hydrodynamic model,
which deals with transport processes of particles, the momentum of particle and
macroscopic physical quantities like energy. Together with the status equation,
they form a complete set of equations to describe quantum plasmas from the fluid
dynamics’ point of View. Besides, Quantum Magnetohydrodynamic (QMHD) model
is established based on QHD equations and takes into account of magnetic field.
This research is based on QMHD model to investigate the different waves and fluid
instabilities in magnetized plasmas.
This thesis includes some parts as described in the following. First, based on the
quantum hydrodynamic equations with magnetic field, we investigated the disper—
sion relation of some types of linear waves in quantum magnetized plasmas. Our
results indicate that the quantum corrections have significant effects on the disper—
sion properties of the Langmuir wave.
Second, we studied the general dispersion equation for quantum magnetized
warm plasmas. Using the plasma dielectric tensor, we obtained the dispersion rela—
tions of magnetoelectric waves and multi-stream instability by solving the dispersion
equation. The parallel magnetic field has no effects on stream instability, while two—
stream instability is altered remarkably by quantum effects and thermal effects.
Third, the electromagnetic drift waves of nonuniform quantum magnetized EPI
plasmas on the basis of the QMHD model were discussed by taking the thermal and
Fermi pressure terms into account. We found that the drift wave is unstable when
the wave vector has a component along the axis and the growth rate is approximately
proportional to the square of the electron number density gradient.
Fourth, the electrostatic drift waves (EDWs) in nonuniform quantum pair plas—
mas placed in an external magnetic field were investigated. We derived the analytic
expression of the dispersion relation of EDWs with the presence of equilibrium mag—
netic field inhomogeneity and show that a new, purely quantum, branch appears.
This new electrostatic drift mode does not exist in classical pair plasmas and has
no vital relation with quantum statistic effects.
Next, the Rayleigh-Taylor (RT) instability in an ideal incompressible quantum
magnetized plasma system was researched. Using the exponential density distribu—
tion and fixed boundary conditions, we derive the analytical expression of the growth
rate of RT instability. The RT instability is affected significantly by quantum effects.
Quantum mechanical effects suppress the RT instability in proper circumstances.
Moreover, we calculated the electrostatic drift waves (EDW) in nonuniform three—
dimensional Fermi plasma placed in an external magnetic field. The dispersion
relation of EDW is obtained. The new quantum diamagnetic drift velocity and
quantum ion—acoustic velocity are introduced and shown to be much greater than
their respective value under classical circumstances, The dispersion relationship is
affected and altered obviously by quantum mechanical effects.
At the last, we consider the possible electrostatic drift waves (EDWs) in quantum
dusty plasmas. The dust self—gravitational effects are taken into account. One
can see that the Jeans terms induced by the dust gravitation perturbation exert
significant effects on the dispersion relation. Under these environment, a drift—like
instability is induced by the Jeans terms.
29
Bauman, Sky Joseph. "Radiative Corrections in Kaluza-Klein Theories." Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/194120.
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The most direct experimental signature of a compactified extra dimension would be the appearance of an infinite tower of Kaluza-Klein particles. Such modes would be identified by their unique spectrum of masses and couplings, but these properties are subject to radiative corrections. We therefore investigate the extent to which such corrections deform the expected tree-level relations between the Kaluza-Klein masses and couplings, and thereby alter the experimental signatures of Kaluza-Klein modes. However, in order to perform this analysis, it is first necessary to develop several new techniques in quantum field theory which can regularize divergences in Kaluza-Klein theories. Specifically, quantum field theory regulators which respect appropriate higher dimensional symmetries are needed. We therefore develop two new regulators for quantum field theories in spacetimes with compactified extra dimensions. Although based on traditional four-dimensional regulators, the key new feature of these higher-dimensional regulators is that they are specifically designed to handle mixed spacetimes in which some dimensions are infinitely large and others are compactified. Moreover, unlike most other regulators which have been used in the extra-dimension literature, these regulators are designed to respect the original higher-dimensional Lorentz and gauge symmetries that exist prior to compactification, and not merely the four-dimensional symmetries which remain afterward. This distinction is particularly relevant for calculations of the physics of the excited Kaluza-Klein modes themselves, and not merely their radiative effects on zero modes. By respecting the full higher-dimensional symmetries, our regulators avoid the introduction of spurious terms which would not have been easy to disentangle from the physical effects of compactification. We then apply our methods to calculations of Kaluza-Klein spectra in 5D Phi to the Fourth theory and Yukawa theory.
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Yundin, Valery. "Massive loop corrections for collider physics." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2012. http://dx.doi.org/10.18452/16469.
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Die Berechnung von Tensorintegralen ist eines der komplizierteren Probleme bei der Berechnung von Einschleifen-Feynmandiagrammen. In dieser Arbeit wird die Computerprogrammbibliothek PJFry entwickelt, mit der Tensorintegrale mit bis zu fünf äusseren Beinen und unter Zugrundelegung beliebiger Kinematik numerisch ausgewertet werden können. Im Programm PJFry sind Algorithmen implementiert, mit denen bei der Reduktion von Pentagon-Tensoren inverse Potenzen der Gramdeterminanten vermieden werden können. Gramdeterminanten der Boxdiagramme werden unter Verwendung von Rekursionsrelationen mit variabler Raum-Zeit-Dimension in einem Satz neuer Basisintegrale isoliert. Die neuen Basisintegrale werden ebenfalls durch Rekursionsrelationen mit variabler Raum-Zeit-Dimension oder durch Entwicklung in kleinen Gramdeterminanten ausgewertet. Die Konvergenz letzterer wird durch Padé-Extrapolation erheblich beschleunigt. Ein Cache-System erlaubt die mehrfache Verwendung von numerischen Bausteinen und erhöht zusätzlich die Effizienz des Programmpakets. Ausser ausführlichen Tests von Struktur und Genauigkeit der Algorithmen wird eine nichtriviale Beispielanwendung ausgearbeitet und mit dem Programm NGluon verglichen: die Berechnung von fünf-Gluon-Helizitätsamplituden. Schließlich werden die virtuellen Einschleifenkorrekturen zur Myonpaarproduktion mit Emission energiereicher ("harter") Photonen berechnet. Die Methode wird erläutert, wie auch Renormierung und Behandlung der Polstruktur in dimensionaler Regularisierung. Numerische Vorhersagen für differentielle Wirkungsquerschnitte werden berechnet, unter Zugrundelegung der kinematischen Situationen, wie sie bei den Detektoren KLOE (DAFNE, Frascati) und BaBar (SLAC) typisch sind.In this thesis we discuss the problem of evaluation of tensor integrals appearing in a typical one-loop Feynman diagram calculation. We present a computer library for the numerical evaluation of tensor integrals with up to 5 legs and arbitrary kinematics. The code implements algorithms based on the formalism which avoids the appearance of inverse Gram determinants in the reduction of pentagon diagrams. The Gram determinants of box integrals are isolated in the set of new basis integrals by using dimensional recurrence relations. These integrals are then evaluated by dimensional recurrence or expansion in small Gram determinant, which is improved by Padé extrapolation. A cache system allows reuse of identical building blocks and increases the efficiency. After describing the cross checks and accuracy tests, we show a sample application to the evaluation of five gluon helicity amplitudes, which is compared with the output of the program NGluon. In the last part the program is applied to the calculation of the one-loop virtual corrections to the muon pair production with hard photon emission. The computation method is explained, followed by a discussion of renormalization and pole structure. Finally, we present numerical results for differential cross sections with kinematics of the KLOE and BaBar detectors.
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Carrazza, S. "PARTON DISTRIBUTION FUNCTIONS WITH QED CORRECTIONS." Doctoral thesis, Università degli Studi di Milano, 2015. http://hdl.handle.net/2434/284820.
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We present the first unbiased determination of parton distribution functions (PDFs) with electroweak corrections. The aim of this thesis is to provide an exhaustive description of the theoretical framework and the technical implementation which leads to the determination of a set of PDFs which includes the photon PDF and quantum electrodynamics (QED) contributions to parton evolution. First, we introduce and motivate the need of including electroweak corrections to PDFs, providing phenomenological examples and presenting an overview of the current state of the art in PDF fits. The theoretical implications of such corrections are then described through the implementation of the combined QCDxQED evolution in APFEL, a public code for the solution of the PDF evolution developed particularly for this thesis. We proceed by presenting the new structure of the Neural-Network PDF (NNPDF) methodology used for the extraction of this set of PDFs with QED corrections. We then provide a first determination of the full set of PDFs based on deep-inelastic scattering data and LHC data for W and Z/γ* Drell-Yan production, using leading-order QED and NLO or NNLO QCD: the so-called NNPDF2.3QED set of PDFs. We perform a preliminary investigation of the phenomenological implications of NNPDF2.3QED set, in particular, focusing on the photon-induced corrections to direct photon production at HERA, high-mass dilepton and W pair production at the LHC and finally, providing a first determination of lepton PDFs through the APFEL evolution. We conclude with a summary of the technological upgrades required for the improvement of future PDF determinations with electroweak corrections.
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Pillay, George Aloysius Permall. "A critical assessment of the constitutionality of section 79(7) of the Correctional Services Act 111 of 1998, with specific reference to the proviso." University of Western Cape, 2019. http://hdl.handle.net/11394/7577.
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Magister Legum - LLMIn recent years the issue of medical parole has become a controversial issue in South Africa. Prior to 2012, at which juncture the law governing the release of inmates on grounds of terminal illness was amended, there were cases where the public deemed the law inadequate and susceptible to political interference.1 There can therefore be little doubt that an amendment to the law was opportune to ensure that the release of inmates was based on legitimate medical reasons.
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何仲詩. "教導、勞役、更生 : 香港青少年懲教院所的發展歷史 = A history of correctional institutions for young offenders in Hong Kong; with special reference to training centre, detention centre and rehabilitation centre." HKBU Institutional Repository, 2012. https://repository.hkbu.edu.hk/etd_ra/1374.
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Waters, Thomas Franklin. "Correctional leadership: A national survey of executive directors of state-operated adult and juvenile correctional systems." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/186012.
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Though correctional leadership issues have been approached by some, few, if any, studies have focused exclusively on the directors of the state operated juvenile and adult correctional systems, and none have focused on the topics of vision, leadership, and rehabilitation with this group. A forty-two item mail questionnaire was used to collect data from the directors of state operated adult and juvenile correctional systems in the United States. Results from this study provided answers and insights to nine research questions: (1) What is the correctional policy model of choice for directors of state correctional systems? (2) What do directors of state correctional systems perceive as the major function of the correctional system? (3) What predictions do directors of state correctional systems have regarding the future of corrections in their states? (4) What do directors of state correctional systems perceive as the major issue in corrections? (5) Do the directors of state correctional systems believe that any treatment intervention "works" with offenders? (6) By what process are directors of state correctional systems selected for their positions? (7) What do directors of state correctional systems believe is the public opinion regarding knowledge of, and support for, the criminal justice system in their state? (8) Who do directors of state correctional systems perceive as being the most influential person(s) in their state concerning correctional issues? (9) What are the similarities and differences in perceptions and opinions of directors of state adult and juvenile correctional systems regarding correctional issues? In conclusion, the correctional management and correctional academic communities were asked to consider a list of fourteen specific recommendations for enhancing correctional leadership and research.
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Bieri, Kay Axel. "QCD corrections in inclusive rare B decays." [S.l.] : [s.n.], 2004. http://www.zb.unibe.ch/download/eldiss/04bieri_k.pdf.
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Buri´c, Maja, Voja Radovanovi´c, and rvoja@rudjer ff bg ac yu. "Quantum Corrections for (Anti)--Evaporating Black Hole." ESI preprints, 2000. ftp://ftp.esi.ac.at/pub/Preprints/esi917.ps.
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Zebarjad, Seyyed Mohammad. "Positronium hyperfine splitting corrections using nonrelativistic QED." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ44643.pdf.
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Lutzo, Raymond J. "A Model of religious education in corrections." Theological Research Exchange Network (TREN), 1986. http://www.tren.com.
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Papadopoulos, Stavros. "Aspects of perturbative corrections in quantum chromodynamics." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74317.
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The perturbative regime of Quantum Chromodynamics (QCD) is considered and certain aspects related with higher order corrections (HOC) are studied. Certain large correction terms in the perturbative expansion are determined, in particular for large transverse momentum $(p sb{T})$ direct photon production. The origin of these terms is specified and simple forms, called K-factors, are provided (soft gluon approach).Furthermore, for processes initiated by 2 $ to$ 2 particle subprocesses the structure of the complete HOC is analyzed. It is shown that when structure functions and/or fragmentation functions are involved, there is a gauge invariant part that dominates HOC over a sizable kinematic range. Simple and general expressions are derived allowing an easy calculation of this part. Also, it is shown that, under certain approximations, this part reduces to the form of the simple K-factors.
Other aspects of HOC, in particular the dependence on the choice of scales, are considered. Using complete HOC, detailed analysis of recent and old data on large-$p sb{T}$ direct photon production is carried out. The dependence of the form of the gluon distribution on the choice of the scales (physical versus optimal scales) is discussed and it is concluded that appreciable ambiguity in this distribution still remains.
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Leigh, Richard Peter. "Ionospheric corrections for SHF satellite radar altimetry." Thesis, University of Leicester, 1989. http://hdl.handle.net/2381/8991.
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To measure the satellite-ocean altitude, a radar altimeter transmits a nadir-directed microwave pulse and times the return of the surface reflection. The intervening free electrons of the ionosphere cause group delay of the pulse resulting in an overestimate of the platform altitude by an amount directly proportional to the sub-satellite electron content. In effect the figure of the ocean surface detected by the altimeter is modulated by the spatial and temporal variation of the ionospheric electron content. A two stage technique has been developed to remove the bias imposed by the ionosphere on altimetric measurements. The first stage generates a prediction of electron content based on ionospheric climatology. The second stage is an adaptive modelling procedure which makes use of data from satellite-ranging radar systems. The first chapter of this thesis gives an introduction to the Earth's ionosphere, describes its effect on radar altimetry and suggests a technique to correct for this influence. Chapter Two reviews previous work in related areas before Chapter Three embarks on a description of the spatial and temporal behaviour of electron content. Chapter Four describes the mathematical sub-models which form the basis of the empirical model and Chapter Five is devoted to the calibration and validation of this model. Chapter Six covers the calculation of the coherence functions of electron content which are crucial for the operation of the adaptive procedure. Chapter Seven compares the new model with one employed for a previous altimeter mission and Chapter Eight summarizes what has gone before and suggests topics for future research.
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McCance, Gavin John. "Event shapes and power corrections at HERA." Thesis, University of Glasgow, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342040.
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Wheeler, Christopher Timothy. "Boundary corrections to the random wave model." Thesis, University of Bristol, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425189.
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Koulibaly, Pierre Malick. "Regulation et corrections physiques en tomographie d'emission." Nice, 1996. http://www.theses.fr/1996NICE4993.
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En tomographie d'emission monophotonique (temp), un traceur radioactif est injecte au patient avant l'examen. Les photons gamma emis sont collectes a l'aide d'une gamma camera en rotation autour du patient, formant alors les projections, elements de base a notre probleme de reconstruction d'image. Les methodes algebriques que nous utilisons pour reconstruire des coupes de l'organe etudie sont lentes, au regard des methodes analytiques actuellement utilisees en routine clinique (filtrage retroprojection). Pourtant, les methodes algebriques sont les seules a pouvoir incorporer simultanement dans le processus de reconstruction, la correction des principaux facteurs de degradation des images que sont l'attenuation, le diffuse compton et la perte de resolution de la camera avec la distance. Ces corrections sont importantes car sans elles, les images fonctionnelles obtenues sont lues de maniere subjective et analysees de maniere semi-quantitative. La reconstruction d'image appartenant a la famille des problemes dits mal-poses, il est necessaire d'utiliser de la regularisation. Regulariser un probleme, c'est introduire dans le processus de reconstruction de l'information a priori sur la solution. Nous avons choisi de considerer qu'une image etait constituee de zones homogenes separees par des bords francs: c'est la regularisation avec preservation des discontinuites. Au cours de cette these, nous avons donc dans un premier temps mis en uvre des techniques d'acceleration (en terme de temps de calcul et de vitesse de convergence) des algorithmes algebriques existants avant d'en developper de nouveaux dans un second temps (moise et moses). Nous avons aussi incorpore dans nos operateurs de projection/retroprojection les corrections physiques grace a une modelisation appropriee de la reponse impulsionnelle de la gamma camera. Nous avons regarde enfin, les consequences de la prise en compte des corrections physiques sur la nature mal-pose du probleme, et montre que la regularisation restait obligatoire
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BRAUN, GREGORY ALBERT. "HIGHER DERIVATIVE CORRECTIONS TO EXTENDED SUPERSYMMETRIC THEORIES." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1092857820.
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Mahanta, Uma Prasad. "Higher order corrections in walking technicolor theories /." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487598748019643.
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Gilabert, Russell. "Location Corrections through Differential Networks (LOCD-IN)." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou153503834918686.
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Weinzierl, Stefan. "Corrections cdq pour e#+e#- 4 jets." Paris 11, 1998. http://www.theses.fr/1998PA112190.
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Cette these a pour objet les corrections perturbatives de cdq pour la production de quatre jets dans l'annihilation des electrons et positrons. Les corrections a une boucle pour le sous-processus e#+e#- q$$q$$ sont calculees avec de nouvelles methodes qui comprennent la decomposition de couleur, la methode des spineur d'helicite, et une decomposition inspiree par la supersymmetrie. Nous avons egalement profite des contraintes decoulants de l'unitarite et des limites colineaires pour restreindre la forme analytique des amplitudes. Dans un deuxieme phase, j'ai ecrit un programme numerique qui combine des contributions dues aux corrections radiatives des sous-processus e#+e#- q$$q$$ et e#+e#- qgg$$ et dues aux corrections d'emission reelle. Le programme utilise le formalisme des dipoles pour annuler les divergences infra-rouge. L'analyse numerique contient des resultats sur la section efficace totale, le parametre d et la variable d'elargissement d'un jet.
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Coello, de Portugal Martínez Vázquez Jaime Maria. "Local optics corrections in the HL-LHC." Doctoral thesis, Universitat Politècnica de Catalunya, 2021. http://hdl.handle.net/10803/672230.
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In order to increase the performance of particle colliders, it is crucial to make the beam sizes at the collision points as small as possible. This causes an increase of the beam size in the region surrounding the collision points thus enhancing the effect of magnetic errors. These errors must therefore be kept under tight control to ensure the performance and safety of the accelerator.
The present thesis studies effects of the expected magnetic errors in the regions around the collision points on the beam optics that determine the beam size in the future High-Luminosity upgrade of the Large Hadron Collider (HL-LHC), a 27 km particle accelerator situated on the French-Swiss border near Geneva, Switzerland.
It has become clear in recent years that in correcting the magnetic errors in this region a crucial requirement is an accurate measurement of the beam optics at the collision point. This thesis demonstrates that the technique used traditionally in recent years, called “K-modulation”, is not accurate enough to ensure the performance of the HL-LHC and therefore alternative methods of performing this measurement must be studied.
To perform these studies a new automatic optics correction tool has been developed and is presented in this thesis. This new tool allows faster and more systematic calculation of corrections of the magnetic errors around the interaction regions and has been successfully tested during commissioning and experiments in the LHC.
Two complementary techniques are proposed in order to improve the accuracy of the determination of the beam sizes at the collision points, namely determining the minimum beam size near the collision point using the “phase-advance” of the beam oscillations around the accelerator and locating the position of this minimum, the “beam waist”, by displacing it and maximising the collision rate characterized by the collider luminosity. In the thesis these techniques are studied theoretically, and the first results of their experimental validation performed in the LHC are presented.
This push for smaller beam sizes at the collision points not only increases the beam sizes in sections around this point but also, though to lesser degree, in the arcs of the accelerator. These regions also become susceptible to smaller magnetic errors. As some regions of the accelerator do not count with adequate corrector magnets alternative solutions are needed. Here we present the first experimental results of an optics correction performed by traversing sextupoles with off-central beam in the LHC as a solution proposal.
Another consequence of the growth of the beam sizes in the regions around the collision points is the eventual necessity for larger beam pipes. This is the case for HL-LHC where the magnetic lenses around the collision points are going to be replaced by new ones with the beam pipe of larger diameter. In order to keep the same magnetic strength though a new superconducting technology is going to be used to build these magnets. A downside of this novelty is that it is susceptible to a type of magnetic instability called “flux-jumps”. In the thesis the effect of the flux-jumps on the beam sizes is studied theoretically and concrete predictions using measurements of this effect on the prototypes of the new magnets of the HL-LHC are given. The study is also extrapolated to the Future hadron-hadron Circular Collider (FCC-hh), a proposed 100 km circular collider, in which superconducting magnets of this type are expected to be installed all around its circumference.
Finally, the thesis presents a summary of software developments performed during the previously mentioned studies, including a user interface to facilitate the use of the automatic correction tool, a new harmonic analysis program that replaces legacy code and many refactors and rewrites that have significantly eased the development of the optics measurements and corrections programs.Con el fin de incrementar la eficiencia de los colisionadores de partículas, es crucial reducir el tamaño de los haces en el punto de colisión tanto como sea posible. Esto causa un incremento del tamaño de los haces en las regiones que rodean al punto de colisión, lo cual incrementa el efecto dañino de los errores magnéticos. Los errores en esta región deben, por tanto, mantenerse bajo estricto control para asegurar que el acelerador se comporta de forma eficiente y segura. Esta tesis estudia los efectos de los errores magnéticos alrededor de los puntos de colisión en la óptica del haz, la cual determina su tamaño en estos puntos, en la futura mejora de Alta-Luminosidad del Gran Colisionador de Hadrones (HL-LHC por sus siglas en inglés), un colisionador de partículas de 27 km de circunferencia situado en Ginebra. En los últimos años se ha hecho evidente que, para corregir los errores magnéticos en estas regiones, es crucial una medida precisa de la óptica del haz en el punto de colisión. Esta tesis demuestra que la técnica de medida usada tradicionalmente, llamada “K-modulation”, no es lo suficientemente precisa para asegurar la eficiencia del HL-LHC y que por lo tanto se deben estudiar métodos alternativos. Para llevar a cabo este estudio, se ha desarrollado y se presenta en esta tesis una nueva herramienta automática de corrección de la óptica. Esta nueva herramienta permite calcular correcciones de los errores magnéticos alrededor de los puntos de interacción de forma más rápida y sistemática, y ha sido probada experimentalmente con éxito en el LHC. Se proponen dos técnicas complementarias que mejoran la precisión de la determinación de los tamaños de los haces en los puntos de colisión: la determinación del mínimo tamaño del haz en la región cercana al punto de colisión usando el “avance de fase” de las oscilaciones del haz y la localización de la posición de este mínimo, desplazándolo y buscando maximizar la frecuencia de las colisiones. En la tesis se estudian estas técnicas de forma teórica y se presentan los primeros resultados de su validación experimental en el LHC. Este impulso para reducir el tamaño de los haces en los puntos de colisión no solo incrementa su tamaño alrededor de este punto sino también, en menor medida, en los arcos. Por tanto, estas regiones también se vuelven sensibles a errores magnéticos más pequeños. Dado que algunas de estas regiones no disponen de imanes correctores, en la tesis se presentan los primeros resultados experimentales en el LHC de una corrección de la óptica atravesando sextupolos con un haz desplazado de su centro. Otra consecuencia del crecimiento del tamaño de los haces en las regiones alrededor de los puntos de colisión es la necesidad de tubos del haz de mayor diámetro. Ese es el caso en HL-LHC, donde las lentes magnéticas alrededor de los puntos de colisión van a ser remplazadas para aumentar su diámetro. Para poder mantener el mismo campo magnético, una nueva tecnología de superconductores se va a utilizar para construir estos imanes. Una desventaja de esta nueva tecnología es que es susceptible a un tipo de inestabilidad llamada “salto de flujo”. En esta tesis los efectos de estos saltos en el tamaño del haz se estudian de forma teórica y se dan predicciones concretas para el HL-LHC. Este estudio se extrapola también al Futuro Colisionador Circular de hadrones-hadrones (FCC-hh por sus siglas en ingles), un colisionador circular propuesto de 100 km en el cual se espera utilizar superconductores de este tipo alrededor de toda su circunferencia. Finalmente, la tesis presenta un resumen de diferentes desarrollos de software realizados durante los estudios antes mencionados, incluyendo una interfaz de usuario para facilitar el uso de la herramienta automática de corrección, un nuevo programa de análisis harmónico que remplaza código heredado y diversas mejoras y rescrituras de software que han desarrollado
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Lunsford, Steven Scott. "Public corrections the discipline of Lynne Truss /." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
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Inghels, Pieter. "Wind tunnel blockage corrections forwind turbine measurements." Thesis, KTH, Mekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-202632.
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Wind-tunnel measurements are an important step during the windturbinedesign process. The goal of wind-tunnel tests is to estimate theoperational performance of the wind turbine, for example by measuringthe power and thrust coecients. Depending on the sizes of both thewind turbine and the test section, the eect of blockage can be substantial.Correction schemes for the power and thrust coecients havebeen proposed in the literature, but for high blockage and highly loadedrotors these correction schemes become less accurate.A new method is proposed here to calculate the eect a cylindricalwind-tunnel test section has on the performance of the wind turbine.The wind turbine is modeled with a simplied vortex model. Usingvortices of constant circulation to model the wake vortices, the performancecharacteristics are estimated. The test section is modeled witha panel method, adapted for this specic situation. It uses irrotationalaxisymmetric source panels to enforce the solid-wall boundary condition.Combining both models in an iterative scheme allows for thesimulation of the eect of the presence of the test-section walls on windturbines performace.Based on the proposed wind-tunnel model, a more general empirical correlationscheme is proposed to estimate the performance characteristicsof a wind turbine operating under unconned conditions by correctingthe performance measured in the conned wind-tunnel conguration.The proposed correction scheme performs better than the existing correctionschemes, including cases with high blockage and highly loadedrotors.