Dissertations / Theses on the topic 'MSVM'
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Jannah, Najlaa. "ECG analysis and classification using CSVM, MSVM and SIMCA classifiers." Thesis, University of Reading, 2017. http://centaur.reading.ac.uk/78068/.
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Reliable ECG classification can potentially lead to better detection methods and increase accurate diagnosis of arrhythmia, thus improving quality of care. This thesis investigated the use of two novel classification algorithms: CSVM and SIMCA, and assessed their performance in classifying ECG beats. The project aimed to introduce a new way to interactively support patient care in and out of the hospital and develop new classification algorithms for arrhythmia detection and diagnosis. Wave (P-QRS-T) detection was performed using the WFDB Software Package and multiresolution wavelets. Fourier and PCs were selected as time-frequency features in the ECG signal; these provided the input to the classifiers in the form of DFT and PCA coefficients. ECG beat classification was performed using binary SVM. MSVM, CSVM, and SIMCA; these were subsequently used for simultaneously classifying either four or six types of cardiac conditions. Binary SVM classification with 100% accuracy was achieved when applied on feature-reduced ECG signals from well-established databases using PCA. The CSVM algorithm and MSVM were used to classify four ECG beat types: NORMAL, PVC, APC, and FUSION or PFUS; these were from the MIT-BIH arrhythmia database (precordial lead group and limb lead II). Different numbers of Fourier coefficients were considered in order to identify the optimal number of features to be presented to the classifier. SMO was used to compute hyper-plane parameters and threshold values for both MSVM and CSVM during the classifier training phase. The best classification accuracy was achieved using fifty Fourier coefficients. With the new CSVM classifier framework, accuracies of 99%, 100%, 98%, and 99% were obtained using datasets from one, two, three, and four precordial leads, respectively. In addition, using CSVM it was possible to successfully classify four types of ECG beat signals extracted from limb lead simultaneously with 97% accuracy, a significant improvement on the 83% accuracy achieved using the MSVM classification model. In addition, further analysis of the following four beat types was made: NORMAL, PVC, SVPB, and FUSION. These signals were obtained from the European ST-T Database. Accuracies between 86% and 94% were obtained for MSVM and CSVM classification, respectively, using 100 Fourier coefficients for reconstructing individual ECG beats. Further analysis presented an effective ECG arrhythmia classification scheme consisting of PCA as a feature reduction method and a SIMCA classifier to differentiate between either four or six different types of arrhythmia. In separate studies, six and four types of beats (including NORMAL, PVC, APC, RBBB, LBBB, and FUSION beats) with time domain features were extracted from the MIT-BIH arrhythmia database and the St Petersburg INCART 12-lead Arrhythmia Database (incartdb) respectively. Between 10 and 30 PCs, coefficients were selected for reconstructing individual ECG beats in the feature selection phase. The average classification accuracy of the proposed scheme was 98.61% and 97.78 % using the limb lead and precordial lead datasets, respectively. In addition, using MSVM and SIMCA classifiers with four ECG beat types achieved an average classification accuracy of 76.83% and 98.33% respectively. The effectiveness of the proposed algorithms was finally confirmed by successfully classifying both the six beat and four beat types of signal respectively with a high accuracy ratio.
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SINGH, BHUPINDER. "A HYBRID MSVM COVID-19 IMAGE CLASSIFICATION ENHANCED USING PARTICLE SWARM OPTIMIZATION." Thesis, DELHI TECHNOLOGICAL UNIVERSITY, 2021. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18864.
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COVID-19 (novel coronavirus disease) is a serious illness that has killed millions of
civilians and affected millions around the world. Mostly as result, numerous
technologies that enable both the rapid and accurate identification of COVID-19
illnesses will provide much assistance to healthcare practitioners. A machine learning-
based approach is used for the detection of COVID-19. In general, artificial intelligence
(AI) approaches have yielded positive outcomes in healthcare visual processing and
analysis. CXR is the digital image processing method that plays a vital role in the
analysis of Covid-19 disease. Due to the maximum accessibility of huge scale annotated
image databases, excessive success has been done using multiclass support vector
machines for image classification. Image classification is the main challenge to detect
medical diagnosis. The existing work used CNN with a transfer learning mechanism
that can give a solution by transferring information from GENETIC object recognition
tasks. The DeTrac method has been used to detect the disease in CXR images. DeTrac
method accuracy achieved 93.1~ 97 percent. In this proposed work, the hybridization
PSO+MSVM method has worked with irregularities in the CXR images database by
studying its group distances using a group or class mechanism. At the initial phase of
the process, a median filter is used for the noise reduction from the image. Edge
detection is an essential step in the process of COVID-19 detection. The canny edge
detector is implemented for the detection of edges in the chest x-ray images. The PCA
(Principal Component Analysis) method is implemented for the feature extraction
phase. There are multiple features extracted through PCA and the essential features are
optimized by an optimization technique known as swarm optimization is used for
feature optimization. For the detection of COVID-19 through CXR images, a hybrid
multi-class support vector machine technique is implemented. The PSO (particle swarm
optimization) technique is used for feature optimization. The comparative analysis of
various existing techniques is also depicted in this work. The proposed system has
achieved an accuracy of 97.51 percent, SP of 97.49 percent, and 98.0 percent of SN.
The proposed system is compared with existing systems and achieved better
performance and the compared systems are DeTrac, GoogleNet, and SqueezeNet.
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RACIOPPI, ANTONIO. "Anomalies, U(1)' and the MSSM." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2009. http://hdl.handle.net/2108/905.
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Questa Tesi analizza un'estensione del MSSM tramite l'aggiunta di un multipletto vettoriale abeliano anomalo
e contiene alcuni risultati originali riguar- danti la fenomenologia di uno $Z'$ anomalo.
La parte di rassegna presenta un'introduzione sul MSSM e le sue caratteristiche principali, una discussione
sulle anomalie chirali e come cancellarle nel Modello Standard e tramite il meccanismo di Green-Schwarz.
Quindi, vengono presentati i risultati originali. Costruiamo la Lagrangiana per la ``Minimal Anomalous U(1)'Extension of the MSSM'', dove le anomalie sono cancellate con il meccanismo di Green-Scharwz e l'aggiunta dei termini di Chern-Simons, sottolineando
le principali caratteristiche tra il nostro modello e il MSSM.
Il vantaggio di questa scelta rispetto alla standard è che permette valori arbitrari dei numeri quantici dell'extra U(1).
Come primo passo verso lo studio delle collisioni adroniche che producono 4 leptoni nello stato finale
(un segnale chiaro che potrebbe essere studiato a LHC) calcoliamo quindi i decadimenti Z' o Z_0 gamma and Z' o Z_0 Z_0.
Troviamo che i valori più grandi per i tassi di decadimento sono sim 10^{-4} GeV, mentre il numero previsto di eventi
all'anno in LHC è al massimo dell'ordine di 10. Quindi calcoliamo la densità residua predetta dal nostro modello con un
nuovo candidato di materia oscura, l'axino, che è la LSP della teoria. Notiamo che l'accordo con i dati sperimentali
implica l'assunzione che la NLSP sia una particella ``bino-like'' quasi degenere in massa con l'axino.This Thesis reviews an extension of the MSSM by the addition of an anomalous abelian vector multiplet and contains some original results concerning the phenomenology of an anomalous Z'. The review part covers an introduction of the MSSM focusing on its main features, a discussion on the chiral anomalies and how to cancel them in the Standard Model and by the Green-Schwarz mechanism. Then, the original results are presented. We build the Lagrangian for the Minimal Anomalous U(1)' Extension of the MSSM where the anomalies are cancelled by the Green-Schwarz mechanism and the addition of Chern-Simons terms, stressing the main differences between our model and the MSSM. The advantage of this choice over the standard one is that it allows for arbitrary values of the quantum numbers of the extra U(1). As a first step towards the study of hadron annihilations producing four leptons in the final state (a clean signal which might be studied at LHC) we then compute the decays Z' o Z_0 g and Z' o Z_0 Z_0. We find that the largest values of the decay rate are sim 10^{-4} GeV, while the expected number of events per year at LHC is at most of the order of 10. Then we compute the relic density predicted by our model with a new dark matter candidate, the axino, which is the LSP of the theory. We see that agreement with experimental data implies the assumption that the NLSP is a bino-like particle almost degenerate in mass to the axino.
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Ewerth, Thorsten. "Rare K- and B-decays in the MSSM." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=973069376.
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Bernal, Nicolas. "Théorie et Phénoménologie du MSSM avec des Scalaires Lourds." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2008. http://tel.archives-ouvertes.fr/tel-00447004.
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Ce mémoire de thèse sera consacré à l'étude de quelques aspects phénoménologiques de la supersymétrie avec, comme principaux sujets, d'une part, la physique du MSSM dans le cas où les superparticules scalaires sont lourdes et les implications possibles auprès de collisionneurs à haute énergie tels que le LHC et, d'autre part, les caractéristiques des particules de matière noire et leurs détermination auprès des collisionneurs et dans des expériences d'astroparticules.
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Cyr-Racine, Francis-Yan. "Study of entropy perturbations in MSSM flat direction decay." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21950.
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We study how the resonant decay of moduli fields from the scalar potential of the MSSM could affect large scale curvature perturbations. After introducing the theory of cosmological perturbations and of broad and stochastic resonance, we present the supergravity inputs necessary to study the MSSM moduli in a cosmological context. We find that the resonant amplification of large scale field fluctuations is allowed for a very small range of parameters and is harmless for large scale curvature modes.Nous étudions l'effet de la désintégration des champs de module du MSSM sur les perturbations gravitationelles adiabatiques à grandes échelles. Après avoir introduit la théorie des perturbations cosmologiques et la théorie de la resonance stochastique, nous présentons les éléments de la supergravité nécessaire à l'étude des champs de module dans un contexte cosmologique. Nous trouvons que l'amplification non-perturbative des fluctuations d'ordre cosmologiques du champ scalaire n'est permise pour que pour un mince interval de paramètres. L'effet de la résonance sur les perturbations gravitationelles à grandes échelles est négligeable.
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Hodgkinson, Robert Neil. "Radiative Higgs Singlet YukawaCouplings in Extensions of the MSSM." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504725.
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Bernal, Hernández Nicolás. "Théorie et phénoménologie du MSSM avec des scalaires lourds." Paris 6, 2008. https://tel.archives-ouvertes.fr/tel-00447004v2.
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On a effectué une analyse du Modèle Standard Supersymétrique Minimale dans le scénario où les superpartenaires scalaires des fermions et des bosons de Higgs (à l'exception du boson de Higgs standard) sont supposés être très lourds et donc éliminés du spectre de basse énergie. Premièrement on résume la détermination du spectre de masse, dans lequel on a inclut les corrections radiatives à une boucle et on a resommé à tout les ordres les logarithmes dominants. En plus, on a étudié en détail la phénoménologie du modèle dans des scénarios où les masses des jauginos sont non universelles à l'échelle Mgut. On a discuté les contraintes données par les recherches dans les collisionneurs, les mesures de haute précision, les contraintes cosmologiques des densité relique de matière sombre et le temps de vie du gluino. Après on a analysé les désintégrations du boson de Higgs, des charginos, des neutralinos et du gluino. Dans une deuxième partie, on a analysé les possibilités de reconstruire dans les collisionneurs de haute énergie les paramètres de base du MSSM avec des scalaires lourds. On a discuté la production des charginos et des neutralinos et dans quelle mesure on peut les utiliser pour calculer les paramètres du lagrangien. En utilisant des mesures de haute précision, on a déterminé les paramètres à basse et à haute énergie. Les paramètres du modèle peuvent être reconstruits même dans le cas où il n'y a pas d'universalité dans la masse des jauginos. Finalement, on a étudié la possibilité d'identifier les propriétés de la matière sombre à partir des expériences Xénon 100kg et du satellite GLAST. On a montré que les expériences de détection directe sont très performantes pour des WIMPs légers. Pour des profils de halo de matière sombre de type NFW, GLAST est capable de confirmer et même d'augmenter la précision lors de la reconstruction de la masse des WIMPs. On a aussi étudié le taux de production de WIMPs dans l'ILC, et comparé ses performances par rapport à Xénon et à GLASTWe perform a comprehensive analysis of the Minimal Supersymmetric Standard Model in the scenario where the scalar partners of the fermions and the Higgs particles (except for the Standard-Model-like one) are assumed to be very heavy and are removed from the low-energy spectrum. We first summarize our determination of the mass spectrum, in which we include the one-loop radiative corrections and resum to all orders the leading logarithms of the large scalar masses. We then study in detail the phenomenology of the model in scenarios where the gaugino mass parameters are non-universal at the GUT scale. We discuss the constraints from collider searches and high-precision measurements, the cosmological constraints on the relic abundance of the neutralino candidate for the Dark Matter in the Universe and the gluino lifetime. We then analyze the decays of the Higgs boson, of charginos and neutralinos and of gluinos, and highlight the differences from the case of universal gaugino masses. In a second part, we analyse the prospects to reconstruct at high-energy colliders the basic parameters of the MSSM with heavy scalars. We discuss at which extent the charginos and neutralinos can be produced and the low-energy Lagrangian parameters which enter the various measurables can be precisely measured. Using the high-precision measurements, we determine the parameters of the model both at the low and high-energy scales. It is shown that model parameters can be reconstructed even in the general case where the soft-SUSY breaking gaugino mass parameters are non universal at the high scale. Finally, we study the possibility of identifying dark matter properties from XENON-like 100 kg experiments and the GLAST satellite mission. We show that whereas direct detection experiments will probe efficiently light WIMPs, given a positive detection, GLAST will be able to confirm and even increase the precision in the case of a NFW profile. We also predict the rate of production of a WIMP in the next generation of colliders (ILC), and compare their sensitivity to the WIMP mass with the XENON and GLAST projects
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Dickerson, Dawne D. "Effects of Medical Professionals' Communication with Men Sleeping With Men and HIV/AIDS." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7795.
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The human immunodeficiency virus (HIV) and acquired immune deficiency syndrome (AIDS) initially emerged in the 1980s and ever since, a battle has been underway with regard to understanding some of the root issues attributed to behavior and HIV/AIDS. AIDS is prevalent in the men sleeping with men (MSM) community. There is lack of studies evaluating the quality and quantity of communication between MSM and medical professionals, which can be a catalyst to help reduce HIV/AIDS within this community. The aim of this quantitative study was to evaluate the relationship between quantity and quality of medical professionals' communication and regular HIV screening and testing, as well as modifying high-risk behaviors attributing to HIV/AIDS MSM behaviors, controlled for race/ethnicity, educational level, and income. Universal precautions theory and health belief model were the theoretical framework of this study. A total of 126 MSM were evaluated via survey research. Chi-square analysis revealed that MSM who have ever visited a medical professional about HIV/AIDS were tested in significantly higher frequency compared with those that did not visit medical professional for this reason (51.5% vs. 18.5%, respectively, p < .001). Also, significantly more participants changed their sexual behavior during the last 5 years and considered that the approach of the medical professional contributed in this change, compared with those who changed their sexual behavior but did not consider this approach helpful (73.7% vs. 26.7%, p < .001). This research can provide positive social change to the MSM community as well as medical professionals, by encouraging MSM to seek more information pertaining to safe sexual health practices, prevention, and awareness.
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Moffett, Peter. "Characterisation of the transcriptional properties of the mSim gene products." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0031/NQ64623.pdf.
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Moffett, Peter. "Characterisation of the transcriptional properties of the mSim gene products." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36659.
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The basic-Helix-Loop-Helix PAS (bHLH-PAS) protein family is a growing family of transcription factors. Included in this family is the Drosophila single-minded (DSim) gene, which is critical for the development of the CNS midline cells.We have isolated a murine homologue of the Drosophila Sim gene, mSim-2. The murine and Drosophila gene products share a high degree of homology in the bHLH and PAS regions but not within the carboxy terminus. Northern blot and RT-PCR analysis of adult murine tissues revealed that the mSim-2 is expressed at the highest levels in the kidneys and at lower levels is present in skeletal muscle, lung, testis, brain, and heart. In situ hybridisation experiments demonstrate that mSim-2 is also expressed in early fetal development in the central nervous system and in cartilage primordia.
We investigated the ability of mSIM-2 to associate with the Arnt gene product, a common dimerisation partner of a number of bHLH-PAS proteins. We found that the HLH and PAS motifs of both proteins are required for optimal association. We demonstrated the presence of two separable repression domains within the carboxy terminus of mSIM-2, in contrast to dSIM, which is a transactivator. We find that mSIM-2 is also capable of repressing activation by its binding partner, ARNT. We also demonstrate that mSIM-2 can functionally interfere with another bHLH-PAS transcription factor, HIF-1alpha, by competing for ARNT binding, providing a second mechanism by which mSIM-2 may inhibit transcription.
We also investigated the effects of mSIM-2 and its close paralogue mSIM-1, as heterodimers with ARNT, on reporter constructs containing native DNA binding sites. We find that mSIM-1 can effect transcriptional activation through it's association with ARNT. In contrast, mSIM-2/ARNT does not activate, as the mSIM-2 repression domains quench ARNT transactivation. We also find that the mSIM-2 can interfere with mSIM-1 mediated transactivation by competing for dimerisation with ARNT and for DNA binding site occupation. Our results suggest that mSIM-1 and mSIM-2 have similar dimerisation and DNA binding properties but different transcriptional effects and may therefore antagonise each other which may in turn be a mechanism of gene regulation by these two proteins.
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Rimmer, Steven. "Neutrino masses and lepton flavour violating phenomena in the MSSM." Thesis, Durham University, 2007. http://etheses.dur.ac.uk/2521/.
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The most general supersymmetric model with minimal particle content and an additional discrete Ƶ(_3) symmetry, which allows lepton number violating terms, is considered. In this model, we calculate at the level of one-loop the resulting Majorana neutrino masses and the flavour violating radiative decays of charged leptons, ﺎ→ﺎ’γ. We first study the neutral scalar sector of the model, performing a calculable rotation of the scalar fields to a basis in which the sneutrino vacuum expectation values are zero. Lagrangian parameters are initialised without recourse to assumptions concerning trilinear or bilinear terms, CP-conservation or intergenerational mixing and one-loop corrections to the neutrino masses are analysed. We present scenarios in which the experimental data are reproduced. We find that with bilinear lepton number violating couplings in the superpotential of the order 1MeV the atmospheric mass scale can be reproduced. Certain trilinear superpotential couplings, usually of the order of the electron Yukawa coupling can give rise to either atmospheric or solar mass scales and bilinear supersymmetry breaking terms of the order 0.1 GeV(^2) can set the solar mass scale. Taking parameters which correctly describe the neutrino sector, we consider their repercussions in flavour violating radiative lepton decays. Such decays have not been observed and upper bounds on their branching ratios exist. We note that certain parameter sets, which correctly describe the neutrino sector, will also generate observable branching ratios and suggest four such sets as Benchmarks scenarios. We present as Appendices the full set of Feynman Rules for the general super- symmetric standard model with minimal particle content and details of the loop calculations in the Weyl spinor notation.
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Coaguila, Cusicanqui Luis Angel. "Adaptabilidad cardiovascular a la hipotermia en la altura (3800 msnm)." Master's thesis, Universidad Nacional Mayor de San Marcos, 2015. https://hdl.handle.net/20.500.12672/8874.
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Publicación a texto completo no autorizada por el autorEvalúa la variación en la adaptabilidad cardiovascular (gasto cardiaco y de la presión sistólica pulmonar) a la hipotermia en la altura (3800 msnm) con respecto a la hipotermia a nivel del mar. El presente estudio es de tipo observacional experimental y de diseño pretest-postest de un solo grupo. Se realiza a nivel del mar en Lima y a gran altitud en la ciudad de Puno a 3800 msnm. Los sujetos de estudio presentan bradicardia y gasto cardiaco bajo, encontrándose además una tendencia lineal entre la presión sistólica de la arteria pulmonar y el gasto cardiaco en hipotermia a 3800 msnm y del gasto cardiaco con la frecuencia cardiaca en hipotermia a nivel del mar. En el presente estudio se encontró variabilidad de la adaptabilidad cardiovascular en el gasto cardiaco y la presión sistólica de la arteria pulmonar a la hipotermia en altura (3800 msnm) con respecto a la hipotermia a nivel del mar. La Adaptabilidad cardiovascular a 3800 msnm se observó con una relación lineal directa entre la Presión Sistólica de Arteria Pulmonar y el Gasto Cardiaco en hipotermia (p=0,010). La Adaptabilidad Cardiovascular a nivel del mar se observó con una relación lineal directa entre el Gasto Cardiaco y la Frecuencia Cardiaca en hipotermia (p=0,049).
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Moreira, Roberto Rodrigues. "Fenomenologia de novos férmions tipo-vetor em extensões do MSSM." reponame:Repositório Institucional da UFABC, 2013.
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Shepherd, Dionne N. "The use of maize streak virus (MSV) replication-associated protein mutants in the development of MSV-resistant plants." Doctoral thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/21827.
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Bibliography: pages 170-194.Maize streak virus (MSV) is the type member of the Mastrevirus genus of the Geminiviridae. As the causal agent of maize streak disease (MSD), MSV is the most significant pathogen of maize in Africa, resulting in crop yield losses of up to 100%. Transmitted by leafhoppers (Cicadulina spp.), MSV is indigenous to Africa and neighbouring Indian Ocean Islands. Despite maize being a crucial staple food crop in Africa, the average maize yield per hectare in Africa is the lowest in the world, leading to food shortages and famine. A major contributing factor to these low yields is MSD. To genetically engineer MSV-resistant maize using the pathogen-derived resistance (PDR) strategy, the viral replication-associated (Rep) protein gene was targeted, whose multifunctional products Rep and RepA are the only viral proteins essential for replication. Rep constructs had previously been made containing deleterious mutations in several conserved amino acid motifs. In this study, these mutants and the wild type Rep gene were truncated to remove key motifs involved in viral replication. A quantitative PCR assay was developed to determine the effects of the mutant and truncated Reps on viral replication in black Mexican sweetcorn (BMS) suspension cells. The MSVsensitive grass Digitaria sanguinalis was then transformed with Rep constructs that inhibited MSV replication in BMS, and transgenic lines were tested for virus resistance. Several plants of a D. sanguinalis line transgenic for a mutated full-length Rep gene showed excellent resistance (immunity) to MSV, but the transgene had negative effects on aspects of plant growth and development. Transformation with a mutated/truncated Rep gene resulted in healthy fertile transgenic D. sanguinalis plants, many of which showed good MSV resistance. Fertile maize (Hi-II) T 1 transgenic plants expressing the truncated/mutated Rep gene have been obtained, the offspring of which will be tested for resistance to MSV. Considering the success in achieving MSV-resistant D. sanguinalis, there is good reason to believe that the transgenic maize will too be resistant to MSV.
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Shepherd, Dionne. "The use of maize streak virus (MSV) replication-associated protein mutants in the development of MSV-resistant plants." Doctoral thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/20142.
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Bibliography: pages 170-194.Maize streak virus (MSV) is the type member of the Mastrevirus genus of the Geminiviridae. As the causal agent of maize streak disease (MSD), MSV is the most significant pathogen of maize in Africa, resulting in crop yield losses of up to 100%. Transmitted by leafhoppers (Cicadulina spp.), MSV is indigenous to Africa and neighbouring Indian Ocean Islands. Despite maize being a crucial staple food crop in Africa, the average maize yield per hectare in Africa is the lowest in the world, leading to food shortages and famine. A major contributing factor to these low yields is MSD. To genetically engineer MSV-resistant maize using the pathogen-derived resistance (PDR) strategy, the viral replication-associated (Rep) protein gene was targeted, whose multifunctional products Rep and RepA are the only viral proteins essential for replication. Rep constructs had previously been made containing deleterious mutations in several conserved amino acid motifs. In this study, these mutants and the wild type Rep gene were truncated to remove key motifs involved in viral replication. A quantitative PCR assay was developed to determine the effects of the mutant and truncated Reps on viral replication in black Mexican sweetcorn (BMS) suspension cells. The MSVsensitive grass Digitaria sanguinalis was then transformed with Rep constructs that inhibited MSV replication in BMS, and transgenic lines were tested for virus resistance. Several plants of a D. sanguinalis line transgenic for a mutated full-length Rep gene showed excellent resistance (immunity) to MSV, but the transgene had negative effects on aspects of plant growth and development. Transformation with a mutated/truncated Rep gene resulted in healthy fertile transgenic D. sanguinalis plants, many of which showed good MSV resistance. Fertile maize (Hi-II) T 1 transgenic plants expressing the truncated/mutated Rep gene have been obtained, the offspring of which will be tested for resistance to MSV. Considering the success in achieving MSV-resistant D. sanguinalis, there is good reason to believe that the transgenic maize will too be resistant to MSV.
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Hugi, Johannes. "Ultrafast MSM photodetectors on InGaAs/GaAs superlattices /." [S.l.] : [s.n.], 1994. http://library.epfl.ch/theses/?nr=1229.
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Nejman, Filip. "Stanovení hodnoty podniku MSV Metal Studénka, a.s." Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-205540.
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The diploma thesis is focused on the topics of reorganization and business valuation. The goal of this thesis is not only determination of business value of MSV Metal Studénka, a.s. by DCF equity method, but also description of reorganization process and evaluation of the financial situation for the period from year 2010 to 2014. The work is divided into theoretical and practical part. There is described methodological apparatus in theoretical part, which is then applied in the practical part. In order to meet the goals the strategic analysis, financial analysis and forecasting methods are used. For the business valuation there is used discounted cash flow to the firm (DCF) method.
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Honc, Adam. "Ocenění firmy MSV Metal Studénka, a. s." Master's thesis, Vysoká škola ekonomická v Praze, 2016. http://www.nusl.cz/ntk/nusl-261962.
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The aim of this thesis is to determine the market value of joint-stock company MSV Metal Studénka for 31. 12. 2015. The thesis is divided into theoretical-methodological and practical part. The former contains the definitions of terms, techniques and methods which relate to not only the problems of company appreciation but also insolvency law focusing on corporate restructuring. In the practical part, the theoretical groundwork is applied. After the initial introduction of the company including a brief description of the course of insolvency proceeding, a strategic and financial analysis is conducted. After the evaluation of the company's financial health and future perspective, a division of assets into operationally necessary and unnecessary, analysis and value generator prognosis, financial plan formulation and the evaluation itself follow. For the final company appreciation, the discounted cash flow method in the variant of free cash flow to the firm (FCFF) is used.
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Moreno-Losana, Antonio. "High-speed MSM photomixers for spectroscopy applications." Thesis, University of Bath, 2006. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436874.
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Bartolomeu, Ana Sofia Sebastião. "Sea level validation in MSYM model for the South China Sea." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12010.
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Mestrado em Meteorologia e Oceanografia FísicaA região do Mar do Sul da China, e os Estreitos da Malásia e Singapura são caracterizados por um comportamento complexo da maré sob a influência dos Oceanos Pacífico e Índico, mas também devido à batimetria e geografia da região. Enquanto a maré é semidiurna no Estreito da Malásia, esta apresenta um carácter misto e diurno entre o Estreito de Singapura e o Mar do Sul da China. Para além da complexidade da região, esta é também economicamente importante e a sua navegabilidade deve ser garantida. Neste sentido, a Hidromod desenvolveu uma aplicação numérica hidrodinâmica para o Estreito da Malásia (modelo MSYM), a partir do modelo MOHID. O modelo MSYM permite, entre outos parâmetros, reproduzir o nível do mar, que necessitam de ser validados. Para a validação do modelo, as previsões são comparadas com observados (disponíveis), sendo este o principal objetivo deste trabalho. Numa primeira parte, foi feita a validação do nível do mar para seis marégrafos do GLOSS incluídos na região do Mar do Sul da China e Estreitos da Malásia e Singapura. A comparação entre observações e previsões numéricas revelou um coeficiente de correlação superior a 0.95 (considerando todas as estações) e um RMSE centrado próximo dos 10 cm nas estações localizadas no Estreito da Malásia (utilizando o domínio de maior resolução horizontal) e de 15 – 20 cm na costa Este da Malásia. Por outro lado, a região é fortemente influenciada por monções de Nordeste (entre Novembro e Março) e de Sudoeste (entre Maio e Setembro) que, atuando sobre o Mar do Sul da China tendem a gerar anomalias positivas ou negativas da maré no Estreito de Singapura, respetivamente. Para estudar este fenómeno, foi analisado o nível do mar em Tanjong Pagar (no Estreito de Singapura), identificando-se anomalias do nível do mar positivas e negativas. São exemplos o dia 25 de Dezembro, associado a uma forte intensidade do vento de Nordeste (anomalia positiva) e o dia 7 de Fevereiro relacionado com uma variação da direção do vento (anomalia negativa). Ambas as anomalias são da ordem de 30 cm e as discrepâncias entre o nível do mar observado e simulados pelo MSYM correspondem principalmente à maré residual (meteorológica). Por fim, a análise da maré em duas estações localizadas no Estreito da Malásia revelou diferenças significativas entre dados observados e previsões numéricas em maré morta, que estão associadas essencialmente à reprodução da maré astronómica pelo modelo MSYM.
The South China Sea region, and the Malacca and Singapore Straits are known for the complex behavior of their tides, which are under the influence of the Pacific and Indian Oceans, and are modified by the bathymetry and geography of the region. While the tide is semidiurnal in the Malacca Strait, in the Singapore Strait and the South China Sea the tides are mixed and diurnal. In spite of the region’s dynamic complexity, it is an economically important region, and its navigability needs to be assured. As such, Hidromod has developed a hydrodynamical numerical application for the Malacca Strait (the MSYM model) from the MOHID model. The MSYM model calculates, among other parameters, the sea level that needs to be validated. In order to validate the model, the predictions are compared with (available) observations, which is the main goal of this work. In a first part, a validation of the sea level for six GLOSS tide-gauges in the South China Sea region and the Straits of Malacca and Singapore was done. This analysis revealed a correlation coefficient between observations and predictions of over 0.95 (taking every station into account) and a RMSE centered around 10 cm in the stations in the Malacca Strait (using the domain with higher horizontal resolution), and of 15-20 cm in the East coast of Malacca. On the other hand, the region is deeply influenced by Northeast monsoons (between November and March) and by Southwest monsoons (between May and September). These act over the South China Sea and tend to induce positive or negative sea level anomalies in the Singapore Strait. In order to study this phenomenon, the sea level in Tanjong Pagar (in the Singapore Strait) was studied, and the positive and negative anomalies were identified. For example, the 25th of December is linked with a strong northeasterly wind (positive) while in the 7th of February with a shift in the wind direction there is a negative anomaly. Both anomalies are in the order of 30 cm and the differences between the observed and predictions sea levels are mainly due to the residual tide (meteorological). Finally, the tidal analysis in two stations located in the Malacca Strait has revealed significant differences between observed data and simulations, during neap tide, which are mostly associated with the reproduction of the astronomical tide by the MSYM model.
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Kache, Sravanthi. "Optimization of charge collection efficiency in MSM photodetector." Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/4279.
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Thesis (M.S.)--University of Missouri-Columbia, 2005.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (December 12, 2006) Includes bibliographical references.
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Decoste, Anthony. "HIV/AIDS beliefs among MSM in the Philippines." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97043.
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ENGLISH ABSTRACT: This research study examines the beliefs related to HIV/AIDS risks and the
perceived effectiveness of preventative measures among men who have sex with men
(MSM) in the Philippines. Using a questionnaire developed using the Health Belief
Model (HBM), this study endeavors to understand beliefs and thus improve counseling
guidelines for MSM who continue to engage in risky sexual behaviors following VCT
and a negative HIV test. The impact of HIV/AIDS on the Philippines is beginning to
increase, affecting men and their partners. The rapid growth of HIV/AIDS among Filipino
MSM indicates that more attention must be paid to the barriers and benefits of condom
use within this high-risk population.
A background of the presence and prevalence of HIV/AIDS is presented. This
study aims to answer the question of why MSM choose to have unprotected sex despite
the risk of HIV/AIDS. Multiple barriers to condom use are identified, including the
availability of condoms, partner resistance, and reduced pleasure. The impacts of
culture and society, the media, role models, social networking, drug use, and riskseeking
behavior on safer sex are assessed. Currently, supplying condoms and
providing voluntary testing and counseling is the primary mode of preventing the spread
of HIV/AIDS, but this study sheds light on the critical issues of condom availability,
perceived benefits and barriers to condom use, and the disconnect between belief and
behavior regarding HIV/AIDS and unprotected sex among MSM in the Philippines.AFRIKAANSE OPSOMMING: Die doel van hierdie studie is ‗n ondersoek na die gelowe (beliefs) teenoor MIV/Vigs van mans wat seks het met mans. Die studie poog verder om ondersoek in te stel na moontlike voorkomende maatreëls wat ingestel kan word om die pandemie te bekamp. Vir die doel van hierdie studie is ‗n vraelys ontwikkel , deur gebruik te maak van die Health Belief Model, met die doel om ‗n beter begrip te kry van die redes vir risikogedrag onder mans wat seks het met mans in die Fillipyne. Die voorkoms van MIV/Vigs by mans wat seks het met mans is steeds aan die toeneem in die Fillipyne en dringende maatreëls is nodig om die groei van die pandemie te beperk. Die studie gee ‗n agtergrond tot MIV/Vigs in die Fillipyne. Die ondersoek gaan dan voort om te probeer bepaal waarom risikogroepe steeds voortgaan om aan onbeskermende seksuele aktiwiteite deel te neem. Resultate van die studie toon aan dat daar verskeie faktore is wat die gebruik van kondome ontmoedig in die risikogroep wat in hierdie studie aangespreek word. Kondome is nie altyd beskikbaar nie; seksuele vennote wil nie kondome gebruik nie en die vermindering in seksuele plesier word as redes aangevoer. Hierdie studie maak ‗n betekenisvolle bydrae tot die kennisbasis van die gelowe en houdings van mans wat seks het met mans ( en dan MIV-positief raak) en sal na alle waarskynlikheid betekenisvol bydra tot die meer suksesvolle bestuur van hierdie risikogroep in die Fillipyne.
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Göpfert, Thomas. "Studies of Charged Higgs Boson Observability in the H->tb Decay at the ATLAS Experiment within the Minimal Supersymmetric Standard Model." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-64051.
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This thesis presents a Monte Carlo study of the search for charged Higgs bosons heavier than the mass of the top quark within the Minimal Supersymmetric Standard Model (MSSM) at the ATLAS experiment at the CERN Large Hadron Collider. Charged Higgs bosons are predicted in many non-minimal Higgs extensions of the Standard Model. Their discovery would be a clear signal for the existence of New Physics beyond the Standard Model, possibly the first experimental evidence to be found if the MSSM is realized in nature. The feasibility of detecting the heavy charged Higgs boson with a mass up to 600 GeV is studied in the decay channel H->tb for an integrated luminosity of 30 inverse femtobarns at a center-of-mass energy of 10 TeV. A major difficulty for charged Higgs boson reconstruction is the combinatorial background in the complex multi-jet final state environment. It is shown that this can be overcome by applying a kinematic fitting procedure and by a subsequent cut-based event and candidate selection. An iterative solution of the developed kinematic fit with non-linear constraints is presented. In addition, the reconstruction of charged Higgs bosons makes high demands on the ability to identify jets containing b-hadrons. A special b-tagging algorithm is introduced and a comparison with first ATLAS data is presented showing good agreement of the expected performance. This study is performed with a realistic simulation of the ATLAS detector and takes into account all dominant experimental uncertainties and statistical uncertainties arising from limited Monte Carlo statistics. The result is given in terms of discovery and exclusion contours in the (m(H), tan(beta)) parameter space in the mhmax scenario of the MSSM. This study indicates that the heavy charged Higgs boson can be discovered in this decay channel only for large values of tan(beta). It, however, can contribute to a combined H sensitivity including other decay channels. Compared to previous studies the discovery reach could be improvedDie vorliegende Arbeit präsentiert eine Monte Carlo Studie zur Suche nach geladenen Higgs Bosonen mit einer Masse größer als die des top Quarks im Kontext des Minimal Supersymmetrischen Standardmodells (MSSM) am ATLAS Experiment am CERN Large Hadron Collider. Geladene Higgs Bosonen werden von vielen Erweiterungen des Standardmodells vorhergesagt. Ihre Entdeckung wäre ein klares Indiz für neue Physik jenseits des Standardmodells, möglicherweise der erste experimentelle Befund für das MSSM. Eine Machbarkeitsstudie zur Entdeckung geladener Higgs Bosonen mit Massen bis zu 600 GeV im Zerfallskanal H->tb für eine integrierte Luminosität von 30 inversen femtobarn und einer Schwerpunktsenergie von 10 TeV wird vorgestellt. Eine der Hauptschwierigkeiten bei der Rekonstruktion geladener Higgs Bosonen ist der durch den komplexen Endzustand mit vielen Jets auftretende kombinatorische Untergrund. Es wird gezeigt, dass die Rekonstruktion durch Anwendung eines kinematischen Fits mit anschließender schnittbasierter Ereignis- und Kandidatenselektion möglich ist. Eine iterative Lösung des entwickelten kinematischen Fits mit nicht-linearen Zwangsbedingungen wird vorgestellt. Des Weiteren stellt die Rekonstruktion geladener Higgs Bosonen hohe Ansprüche an die Möglichkeit, Jets, welche b-Hadronen beinhalten, zu identifizieren. Ein spezieller b-tagging Algorithmus wird vorgestellt und ein Vergleich mit den ersten ATLAS Daten zeigt eine gute Übereinstimmung mit den erwarteten Eigenschaften. Die Studie wurde mit einer realistischen ATLAS Detektorsimulation durchgeführt und beinhaltet alle dominanten experimentellen Unsicherheiten sowie die statistische Unsicherheiten aufgrund begrenzt vorhandener simulierter Ereignisse. Die erwarteten Entdeckungs- und Ausschlusskonturen im mhmax Szenario des MSSM werden als Funktion der geladenen Higgs Boson Masse und tan(beta) gegeben. Die durchgeführte Studie zeigt, dass geladene Higgs Bosonen in diesem Zerfallskanal nur bei großen Werten von tan(beta) entdeckt werden können. Dennoch kann dieser Zerfallskanal zur H Sensitivität beitragen, wenn andere Zerfallskanäle mit in Betracht gezogen werden. Im Vergleich zu vorherigen Studien konnte die Sensitivität erhöht werden
25
Gaissmaier, Benedikt. "Analysis of constrained CP-phases in the MSSM at future linear colliders." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972324984.
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Zerf, Nikolai [Verfasser], and M. [Akademischer Betreuer] Steinhauser. "Dreischleifenkorrekturen zur Higgsbosonproduktion durch Gluonfusion im MSSM / Nikolai Zerf. Betreuer: M. Steinhauser." Karlsruhe : KIT-Bibliothek, 2012. http://d-nb.info/1020663472/34.
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Faust, Anthony Augustine. "A search for MSSM Higgs bosons using the OPAL detector at LEP." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0029/NQ46836.pdf.
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Wright, Gregory Robert. "Design of a high-voltage controller for e-beam and optical MSLM." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15153.
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Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1985.MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING
Bibliography: leaf 40.
by Gregory Robert Wright.
B.S.
29
Kant, Philipp. "Higgs-Masse im MSSM und dimensionale Reduktion in hohen Ordnungen der Störungstheorie." Aachen Shaker, 2008. http://d-nb.info/992936160/04.
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Owor, Betty Elizabeth. "Maize streak virus (MSV) diversity in Uganda and the assessment of gene silencing as a tool for development of resistance to MSV." Doctoral thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/4315.
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Includes abstract.Includes bibliographical references (leaves 158-197).
Maize streak virus (MSV: Family Geminiviridae, Genus Mastrevirus) is the causal agent of maize streak disease (MSD) that contributes significantly to low maize yields in Africa, thereby threatening food security of sub-Saharan Africa’s poorest people. In Uganda, MSD has been identified as one of the most important constraints to maize production. In order to have a better understanding of the disease in that country, this thesis set out to establish MSD levels in farmers’ fields; develop a new sampling and virus isolation method; assess the diversity of MSVs throughout Uganda; and, through the cloning of sampled virus genomes, to determine the genetic characteristics of different isolates. In addition, this study also included an assessment of RNA silencing as a resistance strategy against MSV.
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Ohta, Ricardo Luís. "Construção e caracterização de fotodetetores metal-semicondutor-metal (MSM)." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/3/3140/tde-22072007-172649/.
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Este trabalho teve como objetivo principal a fabricação de fotodetetores do tipo Metal-Semicondutor-Metal (MSM) com corrente de escuro da ordem de 1 nA, responsividade da ordem de 0,1 A/W e razão fotocorrente/corrente de escuro de pelo menos 10. Estes valores asseguram que os fotodetetores obtidos tenham sensibilidade suficiente para serem utilizados em sensores ópticos integrados. Todos os materiais utilizados na construção dos fotodetetores MSM são compatíveis com processos convencionais de fabricação em microeletrônica, facilitando a integração com outros dispositivos em estado sólido. O semicondutor utilizado nos fotodetetores foi o silício, na forma monocristalina ou policristalina. Como material de eletrodo, foi utilizado o alumínio, o titânio ou o níquel. No processo de fabricação básico, foram utilizados apenas três etapas: deposição do filme metálico, fotolitografia e corrosão, confirmando a simplicidade de fabricação desse fotodetetor. Através da construção de dispositivos com diferentes geometrias e diferentes combinações dos materiais citados acima, foi possível verificar a influência que a estrutura cristalina do semicondutor, tipo de dopagem do semicondutor, geometria e material de eletrodo tem sobre o desempenho e o comportamento dos MSMs. O comprimento de onda de 632,8 nm foi utilizado na caracterização dos dispositivos, devido a sua disponibilidade e o desenvolvimento de guias ópticos utilizando esse comprimento de onda em trabalhos anteriores do nosso grupo de pesquisa. Os melhores resultados obtidos foram com as amostras de Si monocristalino tipo-p com eletrodos de titânio. Na amostra sinterizada à 250°C foi obtido um valor da corrente de escuro de 4,8 nA e, na amostra de referência, foi obtido um valor de responsividade de 0,28 A/W.The goal of this work was the fabrication of Metal-Semiconductor-Metal (MSM) photodetectors with the following characteristics: dark current of about 1 nA, responsivity of about 0.1 A/W and dark/photocurrent ratio of at least 10. These values ensure that the photodetectors have enough sensitivity to be used in integrated optic sensors. All materials used in the fabrication of the MSM are compatible with conventional microelectronic manufacture process, so that the photodetectors can be more easily integrated with other solid-state devices. The semiconductor used in the photodetectors was silicon, in single crystal and polycrystalline form. As material of electrodes, aluminum, titanium or nickel had been used. The basic fabrication process consists of only three steps: metal film deposition, photolithography and etching, which confirm the simplicity of the fabrication of this device. Building MSMs with different geometries and making combinations with the materials cited above, gave the possibility to verify the influence that crystalline structure of the semiconductor, doping type of the semiconductor, geometry and electrode material have on the behavior of the photodetectors. The wavelength of 632.8 nm was used in the characterization of the devices, due to its availability and the development of optic waveguides using this wavelength in previous works of our research group. The best results were obtained with the samples fabricated using single crystal Si p-type with titanium electrodes. The sample annealed at 250°C had dark current value of 4.8 nA and, the reference sample had responsivity of 0.28 A/W.
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Palmer, Sophy Elizabeth. "Higgs production via weak Boson fusion in the Standard Model and the MSSM." Thesis, Durham University, 2009. http://etheses.dur.ac.uk/25/.
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Higgs production via weak boson fusion (WBF) is an interesting and important process at both the LHC and a future linear collider. Not only is it a possible Higgs discovery channel, but it also allows us to study the properties of the Higgs boson and the mechanism of electroweak symmetry breaking. In this thesis this process is studied in detail for both the LHC and a future linear collider. Results for light Higgs production via vector boson fusion at a linear collider, taking the Higgsstrahlung contribution into account, are obtained in the (s)fermion sector of the Standard Model and the MSSM. Complete one loop results for weak boson fusion at the LHC in the Standard Model are presented. These include the effects of photon radiation and the full virtual electroweak corrections, as well as the QCD corrections (the latter are well known in the literature and have been taken from the code \tt VBFNLO \rm in this work). The electroweak corrections are found to be as important as the QCD corrections after the application of appropriate cuts -- they are $\sim \mathcal{O}(-5 \%)$ in the Higgs mass range of 100--200 GeV. We present the dominant supersymmetric one loop corrections to neutral Higgs production, in the general case where the MSSM includes complex phases. These results are supplemented by all one loop corrections of Standard Model type and by the propagator type corrections from the Higgs sector of the MSSM, taking the dominant two loop contributions into account. In this way the most complete available result for weak boson fusion Higgs production in the MSSM is achieved. In the decoupling region, $M_A \gg M_Z$, where the light MSSM Higgs boson becomes Standard Model like, the difference between the MSSM loop corrections and those in the Standard Model (for an equivalent Higgs mass) are, as expected, relatively small -- generally $\mathcal{O}(-0.5 \%)$. Larger SUSY loop corrections occur for the light Higgs in the non-decoupling regime -- in the $M_{h}^{max}$ scenario we see differences of $\sim \mathcal{O}(-5\%)$ between the total SM and MSSM loop corrections, and in the CPX scenario, differences of $\mathcal{O}(-5\%)$ are seen in the (s)fermion sector. In some regions of parameter space, production of the heavy MSSM Higgs boson is dominant, and in these regions loop corrections range between $\sim \pm 5\%$. Our results have been implemented into the public Monte Carlo program \tt VBFNLO\rm, which should serve as a useful tool for performing experimental analyses. We make use of an effective Higgs coupling as a simple (and computationally efficient) method of including the Higgs vertex corrections, while the Standard Model type box and pentagon diagrams are incorporated in the standard way using squared matrix elements. Finally, we also present parton level studies of (s)fermion corrections to Z boson production via weak boson fusion, in both the Standard Model and the MSSM. This process has the potential to be used in order to ``calibrate'' WBF Higgs production. Corrections to Z production are generally smaller than those to Higgs production, and are typically $\sim -0.8\%$.
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Wilkinson, M. I. "Multisystem-multimethod (MSMM) assessment with children and their families : Evaluation in clinical practice." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382885.
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Sfondilis, Agamemnon. "Phenomenology and naturalness in gauge extensions of the MSSM after the Higgs discovery." Thesis, University of Sussex, 2016. http://sro.sussex.ac.uk/id/eprint/64815/.
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Supersymmetry remains one of the most favourable candidates for physics beyond the standard model (BSM) due to the solution it provides to the little hierarchy problem as well as the prediction of a Dark matter candidate and other theoretical caveats of the standard model. The minimal supersymmetric standard model despite its success, faces the well known μ problem and the need for large radiative corrections in light of the Higgs discovery which destabilizes the weak scale. Our project addresses this problem in the MSSM and studies the possibility of having a natural theory of singlet extensions of the MSSM with an additional U(1)' gauge group. In a bottom-up approach we have considered a phenomenological version of the gauge extensions of the MSSM (pUMSSM) with generic charges which obey the relations of gauge invariance of the Yukawa terms in the superpotential and perturbativity bounds. Furthermore, we construct a model independent way to impose constraints on the mixing angle from the W mass measurement. We show a strong dependence of the lightest CP-even Higgs boson mass in different models of pUMSSM, on the Higgsino mass μeff and we identify regions of the parameter space in which the Higgs mass is enhanced at tree level by heavy Higgsinos. Furthermore, we analyse the squark sector and find interesting scenarios with heavy third generation squarks with masses directed by large U(1)' D-term contributions. Using the program SARAH and its interface with SPheno, which allow for the calculation of the Higgs mass at the two-loop level in BSM scenarios, we improve the quality and the validity of our results in light of the Higgs discovery. We investigate the role of the gaugino masses M1, M2, M'1 in affecting the fine-tuning at one-loop in the MSSM and in different models of the pUMSSM. A study of the fine tuning measure in MSSM is presented, moreover constraints from collider searches using the program Fastlim are imposed and all points of the parameter scans are being tested. We explore regions of the parameter space in which the natural MSSM scenario is not yet ruled out by currently available searches. We proceed to investigate the fine tuning in scenarios of the pUMSSM with different charge assignments, with light and heavy Z' bosons, and identify interesting regions with low fine tuning. We impose constraints from collider searches on supersymmetric particles using Fastlim and find models which can evade current and future searches at the LHC.
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Yang, Wan-Ching. "Search for MSSM Higgs Bosons in Tau final states with the Dzero detector." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/search-for-mssm-higgs-bosons-in-tau-final-states-with-the-dzero-detector(a85e2235-ea33-4d14-86ac-41020fd56d6a).html.
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The cross-section times branching ratio of the Higgs boson decaying to tau final state in the Standard Model (SM) is too small to play any role in the SM Higgs boson searches. This, however, is different in the Minimal Supersymmetric Standard Model (MSSM), which predicts two Higgs doublets leading to five Higgs bosons: a pair of charged Higgs boson; two neutral CP-even Higgs bosons (h,H) and a CP-odd Higgs boson (A). A search for the production of neutral Higgs bosons decaying into tau final states in ppbar collisions at a centre-of-mass energy of 1.96 TeV is presented in this thesis. One of the two tau leptons is required to decay into a muon while the other decays hadronically. The integrated luminosity is L = 1.0-5.36 fb-1, collected by the Dzero experiment at the Fermilab Tevatron Collider from 2002 to 2009 in the Run II.
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Moore, Chan. "Effects of Social Support on Health-Seeking Behaviors Among African-American Men Who Have Sex With Men." ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/4975.
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The rate of HIV/AIDS infections among African American men who have sex with men (MSM) is alarming. There has been a challenge in reducing HIV/AIDS among the African American MSM population due to internal and external factors that affect their decision making. The theory of social support and reasoned action were applied to gain knowledge on the lived experiences and perceptions of African American MSM as related to social support and seeking health care, which can help fight the heavy impact HIV/AIDS has placed on this population. Data was collected from 14 African American men who openly identified as MSM. Following the in-depth face-to-face interviews, themes were developed using Miles and Huberman's 6-step analytical process to gather a better understanding from this population's perspective. The participants' responses yielded that, although they felt support should come from family, most judgement came daily from family. Participants indicated that judgement tended to cause them to shy away and hide their sexuality from family and turn to people who were more like themselves whom they could trust. Social support has an impact on positive behaviors and choices as related to health among the African American MSM population. Social support can encourage regular testing among this population as well as provide comfort in discussing risky behaviors to ones' health. Knowing ones' health status helps promote HIV/AIDS awareness which helps decrease the prevalence of HIV/AIDS within the African American MSM population as a whole.
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Edema, Richard. "The genetics of virulence of the Maize Streak Mastrevirus (MSV) /." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486400446373474.
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Lonk, David. "Úloha krizového managementu při reorganizaci podniku MSV Metal Studénka, a.s." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-194137.
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The aim of the thesis is to describe the methods of crisis management and their application on the particular company, which was saved from bankruptcy due to effective crisis management. The theoretical part explains the concepts related to the crisis management using knowledge from both domestic and foreign specialized literature. The practical part applies the theoretical knowledge on the selected company. The brief description of the company is supplemented by its economic situation and description of steps that were made by the crisis management. These steps are analyzed and evaluated in the final part of the thesis.
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Bejček, Martin. "Aspekty krizového řízení při sanaci podniku MSV Metal Studénka, a.s." Master's thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-197827.
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The thesis focuses on the insolvency proceedings, which were performed in the company MSV Metal Studénka, as a traditional Czech manufacturing company, which is engaged in the manufacturing of products for the railway, construction and automotive industries. The company got into insolvency in response to the economic crisis that hit the entire Euro-Atlantic region in 2008. Moreover, in 2008, the new Insolvency Act entered into force, it introduced new options how to solve bankruptcy in the Czech law, including a company reorganization controlled by its creditors. The thesis identifies and analyzes the main steps in the restoration process made by the crisis management, examines whether insolvency could be predicted even before the crisis, and compares the satisfaction of creditor groups in insolvency proceedings with the market average.
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Kant, Philipp [Verfasser]. "Higgs-Masse im MSSM und Dimensionale Reduktion in hohen Ordnungen der Störungstheorie / Philipp Kant." Aachen : Shaker, 2009. http://d-nb.info/1161309659/34.
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Chang, Jae Joon. "CMOS differential analog optical receivers with hybrid integrated I-MSM detector." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/14998.
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Thompson, Lance David. "Situational variables associated with unsafe sexual behaviour in an MSM population." Thesis, University of Canterbury. Psychology, 2009. http://hdl.handle.net/10092/2741.
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The current study examined the capacity of the Theory of Planned Behaviour (TPB) and the Prototype/Willingness model (P/W model) to predict intention to have unsafe sex with new and regular partners as well as frequency of unsafe sex in a sample of men who have sex with men (MSM) sample. The study also examined aspects of the sexual situation immediately prior to or during unsafe sexual intercourse (such as substance use, venue and emotional state) to determine whether there were any significant correlations and group differences. One hundred and fifty-eight male participants between the ages of 18-26 who have had sex with another male in the last nine months completed an online survey of sexual habits, TPB and P/W model variables. With the exception of prototypes, the results showed significant group difference in terms of TPB and P/W model variables between risk groups. Furthermore, there was no significant difference between models in predictive capacity in terms of either intention or frequency of unsafe sex. The results of the study suggested participants were generally only having unsafe sex with regular partners, that in older samples it may be more parsimonious to use the TPB than P/W model and that it is important to measure TPB variables in terms of both new and regular partners for increased accuracy and greater applicability in terms of HIV/STI interventions.
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Maule, Simone C. "The MSM Deferral Controversy: An Analysis of the 2000 BPAC Meeting." Scholarship @ Claremont, 2014. http://scholarship.claremont.edu/scripps_theses/463.
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I will analyze the transcript from the 2000 BPAC meeting on the reevaluation of the MSM deferral policy and will elucidate the role that scientific data, specifically the data associated with NAT, plays in the 2000 deliberations surrounding the MSM deferral. This examination reveals that while scientific data did play a significant role in the decision making process of the BPAC there were also a number of other factors that influenced their deliberations as well. Ultimately what I will argue is that there were two different platforms present in the meeting and that each platform performs and enacts the body and blood of the donor differently. One platform is all about the inclusionary principles of blood donation and is most concerned by the potential for discrimination toward the body of the donor. The other platform is all about risk regulation and economics and is most concerned about how the body and blood of the donor will affect the safety and integrity of the blood supply. These platforms are not perspectival or dependent on view; this is not an epistemological argument but rather, an ontological one that concerns the reality and materiality of the situation, not the perspective. Thinking about these two platforms gives a handle to the nature of this controversy and contextualizes the committee’s decision to continue with the MSM deferral.
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Leja, Marek. "Ocenění společnosti po schválené reorganizaci - ocenění společnosti MSV Metal Studenka a.s." Master's thesis, Vysoká škola ekonomická v Praze, 2016. http://www.nusl.cz/ntk/nusl-264556.
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The aim of my diploma thesis is to estimate the market value of the company MSV Metal Studénka, a. s. as of 31st December 2015. The evaluated company produces large variation of steel forgings, pressings and railcar components. The thesis will bring financial analysis of the company and based on strategic analysis and value drivers of the company the financial plan will be drawn up. The valuation of the company will be estimated using income methods of discounted cash flows APV adding market comparison method specifically called similar public company method.
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Wollter, August. "MSSM Higgs to τ τ and Optimizing Sensitivity : Report for Advanced Physics - Project Course 1FA565." Thesis, Uppsala universitet, Högenergifysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-346776.
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I replicated the H/A → τ μ τ had analysis of the MSSM extension to the stan-dard model with the ATLAS experiment. I investigated, using a transformedBDT score for τ -lepton identification with a flat distribution, with more work-ing points than the standard loose, medium and tight, the sensitivity of theanalysis. I then compared for each of the working points and found new signalefficiencies that are more sensitive for this analysis than the standard workingpoints.I replicated the H/A → τ μ τ had analysis of the MSSM extension to the stan-dard model with the ATLAS experiment. I investigated, using a transformedBDT score for τ -lepton identification with a flat distribution, with more work-ing points than the standard loose, medium and tight, the sensitivity of theanalysis. I then compared for each of the working points and found new signalefficiencies that are more sensitive for this analysis than the standard workingpoints.
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Wang, Zeren Simon [Verfasser]. "Confronting the R-parity-violating MSSM with Flavor Observables and Displaced Vertices / Zeren Simon Wang." Bonn : Universitäts- und Landesbibliothek Bonn, 2019. http://d-nb.info/1189730707/34.
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Colak, Dilek. "The multiple sweep method of moments (MSMM) analysis of three dimensional radiation and scattering problems /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488203158828419.
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Holguín, Cardona Sergio Andrés [UNESP]. "Supersimetria e o modelo mínimo supersimétrico." Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/91844.
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A supersimetria é um tópico importante na física teórica atual. Em particular, tem-se dedicado grande esforço no estudo das extensões supersimétricas do Modelo Padrão (SM) desde a década de 80. A incorporação da supersimetria no SM resulta em uma grande quantidade de modelos. O modelo com o conteúdo mínimo de partículas assim como de interações é chamado o Modelo Mínimo Supersimétrico (MSSM). DEvido à supersimetria, todos os modelos supersimétricos apresentam diferenças com relação ao SM. A principal delas, além do conteúdo de partículas, está no setor de Higgs. Em particular, o setor de Higgs do modelo MSSM contem cinco graus de liberdade (cinco bósons de Higgs), diferentemente do SM, que contem apenas um bóson de Higgs. Outra diferença importante no caso do MSSM deve-se à mistura dos estados associados pela supersimetria aos bósons de Gauge e aos bósons de Higgs, chamados gauginos e higgsinos respectivamente, cujos autoestados de massa são conhecidos como charginos e neutralinos. Estas partículas desempenham um papel fundamental na possível descoberta da supersimetria na escala de energia de TeV's.
Supersymmetry is a fundamental topic in the actual theoretical physics. In particular, since the 80's, huge efforts have been done studying the supersymmetric extensions of the Standard Model (SM). Including supersymmetry in the SM generates a great amount of models. Among all of these, there is one that involves the minimum number of particles and interactions. This model is known as the Minimal Supersymmetric Standard Model (MSSM). Due to the incorporation of supersymmetry, all the extensions have differences in relation with the SM. The most remarkable one, beyond the particles content, lies in the Higgs sector. Particularly, in the MSSM Higg's sector there are five degrees of freedom (five Higgs bosons), in contrast with the SM (just one). Another difference is related wit the higgsino and gaugino mixture. This result in the presence of mass eigenstates known as charginos and neutralinos. The later particles play a fundamental role in the possible test of supersymmetry at the TeV's scales.
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Hamp, Auntre' Dojuan. "Examination of the Association between Discussion of HIV Status and High-Risk Sexual Behaviors of MSM in Atlanta." Digital Archive @ GSU, 2008. http://digitalarchive.gsu.edu/iph_theses/46.
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As the HIV/AIDS epidemic in the United States nears the end of its third decade, stakeholders have begun to sift through the previous experiences in prevention in order to assess progress as well as plan the next steps in this fight. The purpose of this study is aimed at understanding the factors which may affect unprotected intercourse. It is hypothesized that for men who have sex with men (MSM) there is an association between having a discussion about their HIV status and high-risk sexual behaviors. A secondary analysis was conducted using data from the National HIV Behavioral Surveillance (NHBS) System. Binary logistic regression was conducted to determine the degree of association of the dependent variables; unprotected receptive anal intercourse (URAI) with a main partner, URAI with a non-main partner, unprotected insertive anal intercourse (UIAI) with a main partner and UIAI with a non-main partner, with the independent variables of discussion of HIV status, age, race, educational attainment, number of partners and HIV status. When assessing the association between the discussion of HIV status with both URAI and UAIA it was found that discussion of HIV status was a non-significant factor. Despite the non-significant findings in relations to the hypotheses, being Black was found to be a significant predictor of URAI and UAIA with main partners in the logistic regression models. Having a positive serostatus and having 5 or more sexual partners proved to be significant risk factors for URAI and UIAI with a non-main partner, while being Black was found to be a protective factor.
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Schaarschmidt, Jana. "The Discovery Potential of Neutral Supersymmetric Higgs Bosons with Decay to Tau Pairs at the ATLAS Experiment." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-67270.
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This work presents a study of the discovery potential for the neutral supersymmetric Higgs bosons h/A/H decaying to tau pairs with the ATLAS experiment at the LHC. The study is based on Monte Carlo samples which are scaled to state-of-the-art cross sections. The analyses are designed assuming an integrated luminosity of 30 1/fb and a center-of-mass energy of sqrt(s) = 14 TeV. The results are interpreted in the mmax h benchmark scenario.
Two final states are analyzed: The dileptonic channel where the two tau leptons decay to electrons or muons and the lepton-hadron channel where one tau decays to an electron or muon and the other tau decays to hadrons. The study of the dilepton channel is based completely on the detailed ATLAS simulation, the analysis of the lepton-hadron channel is based on the fast simulation.
The collinear approximation is used to reconstruct the Higgs boson mass and its performance is studied. Cuts are optimized in order to discriminate the signal from background and to maximize the discovery potential given a certain Higgs boson mass hypothesis. In the lepton-hadron channel the selection is split into two analyses depending on the number of identified b-jets. Procedures to estimate the dominant backgrounds from data are studied. The shape and normalization of the Z to tautau background are estimated from Z to leptonlepton control regions. The ttbar contributions to the signal regions are estimated from ttbar control regions.
The individual analyses are combined and sensitivity predictions are made depending on the Higgs boson mass mA and the coupling parameter tanβ. The light neutral MSSM Higgs bosons with mA = 150 GeV can be discovered when at least tanbeta = 11 is realized in nature. The heavy neutral MSSM Higgs bosons with mA = 800 GeV can be discovered for tanbeta ≥ 44. However, due to the large width of the reconstructed Higgs boson mass and the mass degeneration, only the sum of at least two of the three Higgs boson signals will be visible.