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Tesi sul tema "Ketten"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 10 febbraio 2022

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1

Neumann, Lutz. "Optimierung von CVT-Ketten /". Düsseldorf : VDI-Verl, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=015964325&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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2

Garbe, Jörg. "Rekombinante Analyse der N-terminalen Region von Laminin-[alpha]-Ketten [Laminin-alpha-Ketten]". [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=964258161.

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3

Schatz, Torsten Ingo. "Kürzeste konfinale Ketten im Untergruppenverband unendlicher Permutationsgruppen". [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964583682.

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4

Fessler, Josef. "Konvergenzsätze für vollständig monotone Markov-Ketten auf unendlichen Produkträumen /". [S.l.] : [s.n.], 1986. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=7975.

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5

Michel, Andreas. "Computer-Simulationen zum Adsorptionsverhalten polymerer Ketten auf rauen Oberflächen". [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=96803909X.

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6

Clauberg, Ralf. "Nachweis von Adenovirus DNA mittels einer quantitativen Polymerase-Ketten- Reaktion". [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972223630.

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7

Dannhauser, Philip [Verfasser]. "Funktion der Clathrin leichten Ketten in lebenden Zellen / Philip Dannhauser". Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2011. http://d-nb.info/1013472918/34.

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8

Bartz, Marcel [Verfasser]. "Transfer des muskuloskelettalen Leichtbaus auf offene kinematische Ketten / Marcel Bartz". München : Verlag Dr. Hut, 2019. http://d-nb.info/1181513979/34.

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9

Fischer, Alexander. "An Uncoupling Coupling method for Markov chain Monte Carlo simulations with an application to biomolecules". [S.l. : s.n.], 2003. http://www.diss.fu-berlin.de/2003/234/index.html.

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10

Hagemann, Klaas [Verfasser]. "Doob-Martin-Theorie diskreter Markov-Ketten : Struktur und Anwendungen / Klaas Hagemann". Hannover : Technische Informationsbibliothek (TIB), 2017. http://d-nb.info/1128666677/34.

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11

Herbrich, Uwe. "Wellenmodale Analyse von Ketten Bewertung von Verfahren der Ermittlung von Eigenschwingungen". Göttingen Cuvillier, 2009. http://d-nb.info/999328174/04.

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12

Truthe, Bianca [Verfasser]. "Endlichkeit von Bildsprachen synchroner, kontextfreier Ketten-Code-Bild-Systeme / Bianca Truthe". Aachen : Shaker, 2005. http://d-nb.info/1186578572/34.

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13

Peters, David [Verfasser]. "Grundzustandseigenschaften von anisotropen antiferromagnetischen Heisenberg-Ketten mit Spin S = 1 [[Elektronische Ressource]] / David Peters". Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2012. http://d-nb.info/1021567566/34.

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14

Freimann, Grischa Markus [Verfasser]. "Das Verfahren der sukzessiven Überrelaxation (SOR-Verfahren) bei periodischen Markov-Ketten / Grischa Markus Freimann". Karlsruhe : KIT-Bibliothek, 1999. http://d-nb.info/1013871448/34.

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15

Koserski, Jan. "Analyse der Ratingmigrationen interner Ratingsysteme mit Markov-Ketten, Hidden-Markov-Modellen und Neuronalen Netzen /". Aachen : Shaker, 2006. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=015604019&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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16

Ziegelmüller, Patrick. "Expression der einzelnen Ketten des Kobra Venom Faktors in Escherichia coli und Spodoptera frugiperda /". [S.l. : s.n.], 1997. http://www.gbv.de/dms/bs/toc/235360708.pdf.

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17

Zierden, Mario. "Analyse von Funktionen des Prä-B-Zell-Rezeptors anhand induzierbarer Expression von Immunglobulin-Schweren-Ketten". [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=964510391.

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18

Keller, Alexander [Verfasser], e Nicoleta [Akademischer Betreuer] Ilie. "Charakterisierung von orthodontischen Ketten und Einfluss von Form und Zusammensetzung / Alexander Keller ; Betreuer: Nicoleta Ilie". München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2019. http://d-nb.info/1215499736/34.

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19

Bark, Stefan [Verfasser]. "Die 16S rRNA-Polymerase-Ketten-Reaktion (PCR) zum Erregernachweis bei kulturell aseptischen Tibiapseudoarthrosen / Stefan Bark". Lübeck : Zentrale Hochschulbibliothek Lübeck, 2014. http://d-nb.info/1048410706/34.

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20

Trần, Tuấn Vũ [Verfasser], e Norbert [Akademischer Betreuer] Fuhr. "Modellierung von Benutzerverhalten im interaktiven Retrieval mit Markov-Ketten / Tran Tuan Vu ; Betreuer: Norbert Fuhr". Duisburg, 2020. http://d-nb.info/122196030X/34.

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21

Koserski, Jan [Verfasser]. "Analyse der Ratingmigrationen interner Ratingsysteme mit Markov-Ketten, Hidden-Markov-Modellen und Neuronalen Netzen / Jan Koserski". Aachen : Shaker, 2006. http://d-nb.info/1166515184/34.

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22

Mueller, Daniel. "Zeta-Ketten Expression bei Patienten mit SCCHN und dendritische Zellen als Stimulatoren für T-Zellen In Vitro". Diss., lmu, 2004. http://nbn-resolving.de/urn:nbn:de:bvb:19-17697.

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23

Eden, Thomas [Verfasser], e Friedrich [Akademischer Betreuer] Koch-Nolte. "Herstellung und Charakterisierung von Lama Schwere-Ketten-Antikörper produzierenden transgenen Mäusen / Thomas Eden ; Betreuer: Friedrich Koch-Nolte". Hamburg : Staats- und Universitätsbibliothek Hamburg, 2018. http://d-nb.info/1161847413/34.

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24

Frühwirth-Schnatter, Sylvia, Regina Tüchler e Thomas Otter. "Bayesian analysis of the heterogeneity model". SFB Adaptive Information Systems and Modelling in Economics and Management Science, WU Vienna University of Economics and Business, 2002. http://epub.wu.ac.at/678/1/document.pdf.

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In the present paper we consider Bayesian estimation of a finite mixture of models with random effects which is also known as the heterogeneity model. First, we discuss the properties of various MCMC samplers that are obtained from full conditional Gibbs sampling by grouping and collapsing. Whereas full conditional Gibbs sampling turns out to be sensitive to the parameterization chosen for the mean structure of the model, the alternative sampler is robust in this respect. However, the logical extension of the approach to the sampling of the group variances does not further increase the efficiency of the sampler. Second, we deal with the identifiability problem due to the arbitrary labeling within the model. Finally, a case study involving metric Conjoint analysis serves as a practical illustration. (author's abstract)
Series: Report Series SFB "Adaptive Information Systems and Modelling in Economics and Management Science"

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25

Sallans, Brian, Alexander Pfister, Alexandros Karatzoglou e Georg Dorffner. "Simulation and validation of an integrated markets model". SFB Adaptive Information Systems and Modelling in Economics and Management Science, WU Vienna University of Economics and Business, 2003. http://epub.wu.ac.at/1454/1/document.pdf.

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The behavior of boundedly rational agents in two interacting markets is investigated. A discrete-time model of coupled financial and consumer markets is described. The integrated model consists of heterogenous consumers, financial traders, and production firms. The production firms operate in the consumer market, and offer their shares to be traded on the financial market. The model is validated by comparing its output to known empirical properties of real markets. In order to better explore the influence of model parameters on behavior, a novel Markov chain Monte Carlo method is introduced. This method allows for the efficient exploration of large parameter spaces, in order to find which parameter regimes lead to reproduction of empirical phenomena. It is shown that the integrated markets model can reproduce a number of empirical "stylized facts", including learning-by-doing effects, fundamental price effects, low autocorrelations, volatility clustering, high kurtosis, and volatility-volume correlations. (author's abstract)
Series: Working Papers SFB "Adaptive Information Systems and Modelling in Economics and Management Science"

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26

Wendin, Jonathan Erik Purvis. "Bayesian methods in portfolio credit risk management". Zürich : ETH, 2006. http://e-collection.ethbib.ethz.ch/ecol-pool/diss/abstracts/p16481.pdf.

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27

Špes, Sabina Elizabeta [Verfasser], e Ludwig M. [Akademischer Betreuer] Eichinger. "Nest-Ketten im kardiologischen Fachtext. Mit Fokus auf Herz und kardio- / Sabina Elizabeta Špes ; Betreuer: Ludwig M. Eichinger". Mannheim : Universitätsbibliothek Mannheim, 2021. http://d-nb.info/1229835946/34.

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28

Feuchtenberger, Martin. "Etablierung einer Fluoreszenz-Multiplex-Polymerase-Ketten-Reaktion zur semiquantitativen und qualitativen Analyse des VH-Repertoires in humanen B-Lymphozyten". [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=97097695X.

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29

Prokopenko, Sergiy. "Hierarchical binary spatial regression models with cluster effects". [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972223851.

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30

Kalbe, Matthias [Verfasser]. "Versuch des Nachweises von KI 67-Messenger-RNA in der Gaumenmandel mittels In Situ-Reverse Transkriptasepolymerase Ketten Reaktion / Matthias Kalbe". Kiel : Universitätsbibliothek Kiel, 2017. http://d-nb.info/1133492169/34.

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31

Göbel, Sandra. "Multiplex-Polymerase-Ketten-Reaktion (MPCR) zum Nachweis ausgewählter Virulenzfaktoren schweinepathogener Escherichia coli : Einsatz bei Ferkeln mit Bacillus cereus var. toyoi Zulage /". Berlin : Mensch & Buch, 2003. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=010719059&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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32

Schweflinghaus, Christina. "Mit menschlichen Fesseln zog ich sie an mich, mit den Ketten der Liebe (Hos 11,4a) : Gott und die Freiheit des Menschen /". Berlin ; Münster : Lit, 2009. http://d-nb.info/993679129/04.

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33

Blasius, Elias [Verfasser], Volker [Gutachter] Burkart e Sven [Gutachter] Schinner. "Das Hitzeschockprotein DnaK vermittelt die Stimulation der Makrophagenaktivität durch das autoantigene B-Ketten Insulinpeptid B11-23 / Elias Blasius ; Gutachter: Volker Burkart, Sven Schinner". Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2017. http://d-nb.info/1144587573/34.

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34

Wilke, Jan Verfasser], Winfried [Akademischer Betreuer] [Banzer e Frank [Akademischer Betreuer] Nürnberger. "Die Bedeutung myofaszialer Ketten für das Bewegungssystem unter besonderer Berücksichtigung des mechanischen Krafttransfers / Jan Wilke. Betreuer: Winfried Banzer. Gutachter: Winfried Banzer ; Frank Nürnberger". Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg, 2016. http://d-nb.info/1091048711/34.

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35

Wilke, Jan [Verfasser], Winfried [Akademischer Betreuer] Banzer e Frank [Akademischer Betreuer] Nürnberger. "Die Bedeutung myofaszialer Ketten für das Bewegungssystem unter besonderer Berücksichtigung des mechanischen Krafttransfers / Jan Wilke. Betreuer: Winfried Banzer. Gutachter: Winfried Banzer ; Frank Nürnberger". Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg, 2016. http://d-nb.info/1091048711/34.

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36

Bonke, Rebecca. "Vorkommen und Expression von ß-Laktamase A und B bei Yersinia enterocolitica 4/O:3 Stämmen aus Bayern mittels Polymerase-Ketten-Reaktion und Agardiffusionstest". Diss., lmu, 2009. http://nbn-resolving.de/urn:nbn:de:bvb:19-99220.

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37

Callejas-Gaspar, Berta. "Ein- und mehrkernige Rhodium- und Iridiumkomplexe mit konjugierten organischen Ketten als Brückenliganden Untersuchungen zum Trans-Einfluss von Halogenliganden in quadratisch-planaren Rhodium(I)-Komplexen /". [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=966084284.

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38

Schmitt, Martin [Verfasser], Matthias [Gutachter] Bode, Fakher [Gutachter] Assaad e Roland [Gutachter] Baumhauer. "Strukturanalyse und magnetische Eigenschaften von Ketten aus 3d-Übergangsmetalloxiden auf Ir(001) und Pt(001) / Martin Schmitt ; Gutachter: Matthias Bode, Fakher Assaad, Roland Baumhauer". Würzburg : Universität Würzburg, 2019. http://d-nb.info/1202013457/34.

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39

Bonke, Rebecca. "Vorkommen und Expression von ß[Beta]-Laktamase A und B bei Yersinia enterocolitica 4/O:3 Stämmen aus Bayern mittels Polymerase-Ketten-Reaktion und Agardiffusionstest". kostenfrei, 2009. http://edoc.ub.uni-muenchen.de/9922/.

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40

Petry, Ralf. "Hochauflösende Fourier-Transform-Infrarot-Spektroskopie an Molekularstrahlen von Ketten- und Ringmolekülen die Rotations-Schwingungsspektren des Cyanofulminats (NCCNO), des Oxetans (C3H6O) und des Kohlensuboxides (OC5O) im mittleren Infrarot /". [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=959383980.

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41

Voskoglou, Michael Gr. "A Stochastic Model for the Process of Learning". Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-81041.

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A Markov chain is introduced to the major steps of the process of learning a subject matter by a group of students in the classroom, in order to obtain a mathematical representation of the above process. A classroom experiment for learning mathematics is also presented illustrating the applicability of our results in practice.

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42

Voskoglou, Michael Gr. "Mathematical modelling in classroom: The importance of validation of the constructed model". Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-83164.

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43

Waymouth, Robert M. Grubbs Robert H. "Synthesis and reactivity of alkylaluminum adducts of zirconium ketene and ketone complexes /". Diss., Pasadena, Calif. : California Institute of Technology, 1987. http://resolver.caltech.edu/CaltechETD:etd-10142008-080353.

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44

Nüchter, Heike. "Nachweis von Chlamydophila psittaci in unterschiedlichen Bereichen in zwei Hähnchen- und zwei Putenschlachtereien mittels direkter Immunfluoreszenz nach Erregeranzüchtung in Buffalo-Green-Monkey-Kidney-Zellkulturen sowie der Polymerase-Ketten-Reaktion mit anschliessender Restriktionsenzymanalyse". Wettenberg : VVB Laufersweiler, 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=970941587.

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45

Locker-Grütjen, Oliver [Verfasser], Rolf [Akademischer Betreuer] Dobischat e Karl [Akademischer Betreuer] Düsseldorff. "Rahmenbedingungen für Forschung an deutschen Universitäten „Wissenschaft in Ketten oder entfesselte Hochschule?“ : Ansätze eines modernen Forschungsmanagements in Zeiten des Wandels in der deutschen Hochschullandschaft / Oliver Locker-Grütjen. Gutachter: Rolf Dobischat ; Karl Düsseldorff". Duisburg, 2012. http://d-nb.info/1020790202/34.

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46

Nüchter, Heike [Verfasser]. "Nachweis von Chlamydophila psittaci in unterschiedlichen Bereichen in zwei Hähnchen- und zwei Putenschlachtereien mittels direkter Immunfluoreszenz nach Erregeranzüchtung in Buffalo-Green-Monkey-Kidney-Zellkulturen sowie der Polymerase-Ketten-Reaktion mit anschließender Restriktionsenzymanalyse / Heike Nüchter". Wettenberg : VVB Laufersweiler, 2004. http://d-nb.info/970941587/34.

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47

Buchholz, Peter, e Tuğrul Dayar. "Block SOR Preconditional Projection Methods for Kronecker Structured Markovian Representations". Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-100464.

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Hierarchical Markovian Models (HMMs) are composed of multiple low level models (LLMs) and high level model (HLM) that defines the interaction among LLMs. The essence of the HMM approach is to model the system at hand in the form of interacting components so that its (larger) underlying continous-time Markov chain (CTMC) is not generated but implicitly represented as a sum of Kronecker products of (smaller) component matrices. The Kronecker structure of an HMM induces nested block partitionings in its underlying CTMC. These partitionings may be used in block versions of classical iterative methods based on splittings, such as block SOR (BSOR), to solve the underlying CTMC for its stationary vector. Therein the problem becomes that of solving multiple nonsingular linear systems whose coefficient matrices are the diagonal blocks of a particular partitioning. This paper shows that in each HLM state there may be diagonal blocks with identical off-diagonal parts and diagonals differing from each other by a multiple of the identity matrix. Such diagonal blocks are named candidate blocks. The paper explains how candidate blocks can be detected and how the can mutually benefit from a single real Schur factorization. It gives sufficient conditions for the existence of diagonal blocks with real eigenvalues and shows how these conditions can be checked using component matrices. It describes how the sparse real Schur factors of candidate blocks satisfying these conditions can be constructed from component matrices and their real Schur factors. It also demonstrates how fill in- of LU factorized (non-candidate) diagonal blocks can be reduced by using the column approximate minimum degree algorithm (COLAMD). Then it presents a three-level BSOR solver in which the diagonal blocks at the first level are solved using block Gauss-Seidel (BGS) at the second and the methods of real Schur and LU factorizations at the third level. Finally, on a set of numerical experiments it shows how these ideas can be used to reduce the storage required by the factors of the diagonal blocks at the third level and to improve the solution time compared to an all LU factorization implementation of the three-level BSOR solver.

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48

Dombeck, Uwe. "Beitrag zur Dimensionierung von Fördersystemen mit Staurollenketten". Doctoral thesis, Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-109852.

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Die Arbeit beschäftigt sich mit der Untersuchung der Beanspruchungen von Staurollenketten. Zunächst wurde in den Grundlagen der Aufbau von unterschiedlichen Staurollenkettenarten dargestellt, die Eigenschaften miteinander verglichen und kategorisiert. Aufbauend auf dem anschließend geschaffenen Verständnis der wirkenden Reibpaarungen bzw. -arten wurden FEM-Analysen durchgeführt, um dadurch auftretende Spannungen zu detektieren und das thermische Verhalten der unterschiedlichen Werkstoffpaarungen zu ermitteln. Innerhalb der praktischen Versuche der Arbeit kam es zur Ermittlung der Bruch- und Dauerfestigkeiten nach ISO15654 [DIN04]. Zur Untersuchung der Eigenschaften der Ketten unter praxisnahen Randbedingungen wurde ein Versuchsstand konzipiert, welcher die Ermittlung von Kennwerten zwei unterschiedlicher Kettengrößen unter härtesten Bedingungen ermöglicht. Durch diesen Versuchsstand wurden die Staukraft, die Kettenzugkraft durch das Drehmoment am Antrieb, die Kettengeschwindigkeit, die Kettenlängung und das Temperaturverhalten dauerhaft überwacht. Im letzten Kapitel der Arbeit wurde eine Überwachungsstation für unterschiedliche Baugrößen von Staurollenketten entwickelt und die Funktionsweise durch Versuche nachgewiesen
This dissertation is dealing with the investigation of the load behaviour of accumulation roller chains. Initially, the structures of different types of accumulation roller chains are described, properties are compared and categorised. Based on the created understanding of acting tribological pairing and friction mechanisms, FEM analysis have been performed to evaluate occurring stresses and determine the thermal behaviour of the various material combinations. Within the testing procedures, breaking strength and fatigue strength have been investigated in accordance with DIN ISO 15654 [cf. DIN04]. A test bench has been developed for practically relevant testing of the chains, where determination of characteristic values can be done under hard testing conditions for two different chain types. The test bench ensures measurement and survey of accumulation forces, tensile chain forces (by torque moment at drive), chain speed, chain elongation and chain temperature during whole testing time. The last chapter of the dissertation deals with the development of a 'control and monitoring unit' for accumulation roller chains with various dimensions including proof of function by trials

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49

Anders, Gerlind. "PCR diagnosis of Leishmaniasis in Israel and the West Bank". Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2003. http://dx.doi.org/10.18452/14879.

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Leischmaniasis ist ein ernstzunehmende bedrohliche Erkrankung in vielen Ländern. Epidemien sind nicht unter Kontrolle, Neusbrüche werden in endemischen Ländern registriert. Darüber hinaus gibt es eine zunehmende Anzahl von Krankheitsfällen bei Reiserückkehrern in nicht endemischen Ländern . Für den individuellen Patienten sowie auch allgemein für die epidemiologische Kontrolle ist eine frühe und angemessene Therapie sehr wichtig. Als Voraussetzung ist eine präzise Diagnostik unabdingbar. Die Polymerase Ketten Reaktion (PCR) besitzt das größte Potential für die sensitive und spezies-spezifische Diagnostik der Leischmaniasis. Diese Studie ist in Israel und in der West Bank durchgeführt worden mit dem Ziel, eine sensitive und spezies-spezifische Diagnostik für Leischmaniasis im Land zu etablieren. Drei Arten von Leischmanien sind endemisch, Leishmania major,L.tropica, L.d.infantum, mit neuausbrechenden endemischen Foci in einigen Gegenden des Landes. Israelische Reiserückkehrer aus Zentral- und Südamerika kehren gelegentlich mit Infektionen aus der Neuen Welt zurück (L.braziliensis, L.mexicana Komplex). In dieser Studie wurden vor allem Proben direkt von denHautläsionen entnommen und auf Filter Papiekonserviert. Verschiedene DNA Extraktions- und PCR-Methoden wurden getestet. PCR wurde eingeführt für die Diagnostik von Patienten und auch zur Untersuchung von Infektionsraten bei Reservoirtieren. Ein Hauptziel der Studie war, die Methoden nach Praktikabilität, Zeit- und Kosteneffizienz testen, im Hinblick auf die Einführung der Methoden in klinischen Labors.
Leishmaniasis is a serious health threat in many countries around the world.Epidemics are hardly controlled, new foci are emerging in endemic countries. In addition,through tourism increasing numbers of infections are seen in non endemic countries. Early and adequate treatment is essential for the individual as well as for the control of the disease in general. As a prerequisite precise diagnosis is necessary. Diagnosis by the polymerase chain reaction (PCR) has the greatest potential for sensitive and species-specific diagnosis of leishmaniasis. This study has been carried out in Israel and the West Bank with the purpose to establish sensitive and species-specific diagnosis of leishmaniasis in the country. Three species of Leishmania are endemic, Leishmania major, L.tropica and L.d.infantumwith emerging foci in many parts of the country. Other species of the New World are occasionally imported by Israeli travelers returning from Central or South America (L.braziliensis and L.mexicana complex). The study focused on dermal lesion scrapings collected from suspected lesions and preserved on filter paper. Different DNA extraction and PCR methods have been tested. PCR was introduced forthe diagnosis of individual patients as well as for epidemiological studies in reservoir animals. It has been a major goal to select time and cost saving methods with regard to the introduction of PCR diagnosis of leishmaniasis to clinical laboratories.

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Buchholz, Peter, e Tuğrul Dayar. "Block SOR Preconditional Projection Methods for Kronecker Structured Markovian Representations". Technische Universität Dresden, 2003. https://tud.qucosa.de/id/qucosa%3A26304.

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Hierarchical Markovian Models (HMMs) are composed of multiple low level models (LLMs) and high level model (HLM) that defines the interaction among LLMs. The essence of the HMM approach is to model the system at hand in the form of interacting components so that its (larger) underlying continous-time Markov chain (CTMC) is not generated but implicitly represented as a sum of Kronecker products of (smaller) component matrices. The Kronecker structure of an HMM induces nested block partitionings in its underlying CTMC. These partitionings may be used in block versions of classical iterative methods based on splittings, such as block SOR (BSOR), to solve the underlying CTMC for its stationary vector. Therein the problem becomes that of solving multiple nonsingular linear systems whose coefficient matrices are the diagonal blocks of a particular partitioning. This paper shows that in each HLM state there may be diagonal blocks with identical off-diagonal parts and diagonals differing from each other by a multiple of the identity matrix. Such diagonal blocks are named candidate blocks. The paper explains how candidate blocks can be detected and how the can mutually benefit from a single real Schur factorization. It gives sufficient conditions for the existence of diagonal blocks with real eigenvalues and shows how these conditions can be checked using component matrices. It describes how the sparse real Schur factors of candidate blocks satisfying these conditions can be constructed from component matrices and their real Schur factors. It also demonstrates how fill in- of LU factorized (non-candidate) diagonal blocks can be reduced by using the column approximate minimum degree algorithm (COLAMD). Then it presents a three-level BSOR solver in which the diagonal blocks at the first level are solved using block Gauss-Seidel (BGS) at the second and the methods of real Schur and LU factorizations at the third level. Finally, on a set of numerical experiments it shows how these ideas can be used to reduce the storage required by the factors of the diagonal blocks at the third level and to improve the solution time compared to an all LU factorization implementation of the three-level BSOR solver.

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