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Dissertations / Theses on the topic 'Harden'

Author: Grafiati

Published: 10 March 2023

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1

Harden, Torsten [Verfasser], and Rolf [Akademischer Betreuer] Nieder. "Erfassung und Modellierung mikrobieller C und NUmsetzungsprozesse in südostniedersächsischen LößAckerböden / Torsten Harden ; Betreuer: Rolf Nieder." Braunschweig : Technische Universität Braunschweig, 1998. http://d-nb.info/1175832561/34.

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2

Harden, Markus [Verfasser], Tim [Akademischer Betreuer] Friede, Tim [Gutachter] Friede, and Heike [Gutachter] Bickeböller. "Planung multizentrischer randomisierter klinischer Studien mit kontinuierlichem Endpunkt / Markus Harden ; Gutachter: Tim Friede, Heike Bickeböller ; Betreuer: Tim Friede." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://d-nb.info/1207543055/34.

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3

Harden, Melanie Alexandra [Verfasser], Woflgang [Akademischer Betreuer] Ruschewski, Wolfgang [Akademischer Betreuer] Ruschweski, Thomas [Akademischer Betreuer] Paul, and Frank [Akademischer Betreuer] Edelmann. "Die Entwicklung der Durchmesser des pulmonalen Autografts und linken Ventrikels nach Ross-Operation bei Kindern und Jugendlichen / Melanie Alexandra Harden. Gutachter: Wolfgang Ruschweski ; Thomas Paul ; Frank Edelmann. Betreuer: Woflgang Ruschewski." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2015. http://d-nb.info/106762645X/34.

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4

Baumgartl, Robert. "RTAI - Linux im harten Echtzeiteinsatz." Universitätsbibliothek Chemnitz, 2005. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200500078.

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Der Vortrag gibt eine Einführung in die Konstruktion von harten Echtzeitsystemen auf der Basis von Linux und RTAI. Inhaltliche Schwerpunkte sind: Virtualisierung der Interrupt-Hardware, Überblick über das Realtime Application Interface, Programmierung von RTAI-gestützten Applikationen, Alternativen: RTLinux, Microkernel & Co.

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5

Harder, Michael [Verfasser]. "Exchangeability of copulas / Michael Harder." Ulm : Universität Ulm, 2016. http://d-nb.info/1106329910/34.

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6

Bohman, Jerker. "En kritik av Hardins livbåtsetik." Thesis, Uppsala universitet, Filosofiska institutionen, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-350226.

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7

Lühr, Christoph. "Charakterisierung und Klassifikation von fossilen Harzen." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974953229.

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8

Bruasse, Laurent. "Stabilité et filtration de Harder-Narasimhan." Phd thesis, Université de Provence - Aix-Marseille I, 2001. http://tel.archives-ouvertes.fr/tel-00004129.

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Née sur les variétés algébriques, la notion de stabilité s'est ensuite généralisée aux variétés kähleriennes, puis, au variétés holomorphes compactes grâce à l'utilisation des métriques de Gauduchon. L'étude du comportement des fibrés (ou des faisceaux) non semi-stables n'a été faite de façon complète que dans le cas algébrique à travers la notion de filtration de Harder-Narasimhan (FHN). Nous poursuivons ici cette étude pour des variétés holomorphes compactes quelconques. Nous montrons qu'il est possible de définir le sous-faisceau de pente maximale d'un fibré vectoriel complexe. Ce sous-faisceau est obtenu comme limite au sens des sous-fibrés holomorphes faibles, notion déjà utilisée par Uhlenbeck et Yau pour la correspondance de Kobayashi-Hitchin, qui nous donne ici ``la bonne notion de convergence''. Nous démontrons l'existence d'une FHN dans ce cadre. Nous généralisons ensuite le résultat aux faisceaux cohérents sans-torsion. On est alors confronté à des problèmes de convergence liés à la non compacité de la base (lieu où le faisceau est localement libre). Nous montrons ensuite comment ces méthodes s'appliquent à une famille de fibrés (ou une famille plate de faisceaux sans-torsion) définie sur une déformation de variété holomorphe compacte pour obtenir des résultats d'existence de sous-faisceaux limites de type Bishop. On obtient par là-même une nouvelle démonstration de l'ouverture de la stabilité en déformation qui n'utilise pas la difficile correspondance de Kobayashi-Hitchin. Dans une deuxième partie, nous donnons des conditions équivalentes de simplicité et de stabilité pour les fibrés tangents des surfaces holomorphes compactes de la classe $VII$. Nous obtenons, en particulier, un exemple de déformation de surface à coquille sphérique globale qui illustre la non ouverture de la non semi-stabilité en déformation.

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9

Zure, Marina [Verfasser], Jens [Akademischer Betreuer] Harder, and Ramsay [Akademischer Betreuer] Paul. "Biogeography of Rhodopirellula in European coastal sediments / Marina Zure. Betreuer: Jens Harder. Gutachter: Jens Harder ; Ramsay Paul." Bremen : Staats- und Universitätsbibliothek Bremen, 2015. http://d-nb.info/1082343269/34.

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10

Pahl, Jürgen [Verfasser], Sjoerd [Akademischer Betreuer] Harder, and Sjoerd [Gutachter] Harder. "Lewis Acidic Magnesium Complexes: Development, Synthesis, Characterization and Reactivity / Jürgen Pahl ; Gutachter: Sjoerd Harder ; Betreuer: Sjoerd Harder." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2019. http://d-nb.info/1182034713/34.

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11

Fischer, Tanja [Verfasser], Jens [Akademischer Betreuer] Harder, Jens [Gutachter] Harder, and Rudolf [Gutachter] Amann. "Surface structures and taxonomy of marine Flavobacteriia / Tanja Fischer ; Gutachter: Jens Harder, Rudolf Amann ; Betreuer: Jens Harder." Bremen : Staats- und Universitätsbibliothek Bremen, 2018. http://d-nb.info/1169299016/34.

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12

Elsen, Holger [Verfasser], Sjoerd [Akademischer Betreuer] Harder, Sjoerd [Gutachter] Harder, and Ralph [Gutachter] Puchta. "Imine Reduction with Main Group Metal Catalysts / Holger Elsen ; Gutachter: Sjoerd Harder, Ralph Puchta ; Betreuer: Sjoerd Harder." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2021. http://d-nb.info/1229194193/34.

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13

Jahnke, Carsten. "Das Silber des Meeres : Fang und Vertrieb von Ostseehering zwischen Norwegen und Italien (12.-16.Jahrhundert) /." Köln ; Weimar ; Wien : Böhlau, 2000. http://catalogue.bnf.fr/ark:/12148/cb388275261.

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14

Martin, Johannes [Verfasser], Sjoerd [Akademischer Betreuer] Harder, Sjoerd [Gutachter] Harder, and Ralph [Gutachter] Puchta. "Alkene Activation and Hydrogenation with Alkaline Earth Metals / Johannes Martin ; Gutachter: Sjoerd Harder, Ralph Puchta ; Betreuer: Sjoerd Harder." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2021. http://d-nb.info/1233867474/34.

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15

Pang, Thiam-Sun [Verfasser], and Stefan [Akademischer Betreuer] Kebekus. "The Harder-Narasimhan filtrations and rational contractions." Freiburg : Universität, 2015. http://d-nb.info/1119328241/34.

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16

Fretwell, Daniel. "Level p paramodular congruences of Harder type." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/9683/.

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In this thesis we will produce and investigate certain congruences, as predicted by Harder, between Hecke eigenvalues of Siegel and elliptic modular forms. Such congruences form a natural generalisation of the famous 691 congruence of Ramanujan. In direct comparison the moduli of our congruences will come from critical values of L-functions of elliptic modular forms. In particular we will be interested in congruences between level p paramodular Siegel forms and Gamma0(p) elliptic forms. Evidence for such congruences in these cases is rare (the only known examples being of level 2, due to Bergstrom et al). In order to simplify matters on the Siegel side we move into spaces of algebraic modular forms for the group GU2(D) for a quaternion algebra D/Q ramified at p,∞. Here we can use a web of conjectures and results due to Ibukiyama along with trace formulae of Dummigan to produce Hecke eigenvalues of level p paramodular forms (allowing the congruences to be tested with ease). I provide new algorithms for finding explicit descriptions of these spaces of algebraic forms. In order to provide justification for the paramodular nature of the congruence we will also consider the interplay between associated Galois representations and automorphic representations.

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17

Caldwell, Anita M. "Hard Times Hit Elderly Harder Than Most." College of Agriculture, University of Arizona (Tucson, AZ), 1993. http://hdl.handle.net/10150/295717.

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18

Hilmersson, Marie. "Haren. Ett hot mot idrottens värde?" Thesis, Högskolan Dalarna, Sociologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:du-3289.

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Inom friidrottens löpgrenar kan man idag se vid de stora galorna att det finns en person som har till uppgift att springa före övriga deltagare och springa i en viss fart som har beställts antingen av arrangörerna eller någon löpare. Denna person kallas för "hare" vars huvuduppgift är att se till att ett visst tempo hålls under loppet. Men vad har detta fenomen för effekt på idrottens värde? Detta arbete ger en beskrivning av fenomenet "haren" både ur historiskt perspektiv samt hur det ser ut i nutida läge. Genom diverse teorier om vad som skapar värde inom idrott och hur idrott bör utföras för att uppfattas som mer "äkta" har fenomenet sedan analyserats för att bestämma om fenomenet är något positivt eller negativt för idrottens värde. Prestationer är något som ska genomföras på egen hand och idrottaren skall besitta de resurser som krävs för att kunna genomföra ett lopp helt på egen hand och kunna hantera både interna och externa påfrestningar. Att inte veta vem som kommer att vinna är den ovisshet som skapar spänning och därmed värde inom idrott. Med haren har man eliminerat denna ovisshet för att i stället få spänning genom att fokusera loppen på att slå rekord. Detta sätt att skapa prestationer har en mycket negativ påverkan på idrottens värde vilket får en detaljerad analys i detta arbete.

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19

Cone, Justin. "JS Harbon /." Connect to full text version online, 2001.

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20

Frank, Carsten S. [Verfasser], Jens [Akademischer Betreuer] Harder, and Rudolf [Akademischer Betreuer] Amann. "Polyphasische Taxonomie, Kerngenom und Lebenszyklus von Rhodopirellula-Stämmen / Carsten S. Frank. Gutachter: Jens Harder ; Rudolf Amann. Betreuer: Jens Harder." Bremen : Staats- und Universitätsbibliothek Bremen, 2011. http://d-nb.info/1071897888/34.

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21

Gentner, Thomas [Verfasser], Sjoerd [Akademischer Betreuer] Harder, and Sjoerd [Gutachter] Harder. "Novel Strongly Donating and Superbulky Ligands in s-Block Metal Chemistry / Thomas Gentner ; Gutachter: Sjoerd Harder ; Betreuer: Sjoerd Harder." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2019. http://d-nb.info/119199399X/34.

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22

Kizina, Jana [Verfasser], Jens [Akademischer Betreuer] [Gutachter] Harder, and Rudolf [Gutachter] Amann. "Insights into the biology of Candidate Division OP3 LiM populations / Jana Kizina ; Gutachter: Jens Harder, Rudolf Amann ; Betreuer: Jens Harder." Bremen : Staats- und Universitätsbibliothek Bremen, 2017. http://d-nb.info/1142314294/34.

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23

Puentes, Cala Edinson Andres [Verfasser], Jens [Akademischer Betreuer] Harder, Jens [Gutachter] Harder, and Michael [Gutachter] Friedrich. "The anaerobic monoterpene metabolism in Castellaniella defragrans 65Phen / Edinson Andres Puentes Cala ; Gutachter: Jens Harder, Michael Friedrich ; Betreuer: Jens Harder." Bremen : Staats- und Universitätsbibliothek Bremen, 2018. http://d-nb.info/1159699895/34.

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24

Amat, Plata Sergio. "Avances en la multiresolución de Harten y aplicaciones." Universitat de València, 2001. http://www.tesisenxarxa.net.

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25

Panzner, Tobias. "Kohärente Reflexion mit weisser Synchrotronstrahlung im harten Röntgenbereich." Berlin Logos-Verl, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=3066075&prov=M&dok_var=1&dok_ext=htm.

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26

Harder, Alexander [Verfasser]. "Optomechanische Untersuchungen an Biomolekülen mittels Rastersondenmikroskopie / Alexander Harder." Bielefeld : Universitätsbibliothek Bielefeld, 2014. http://d-nb.info/1058434292/34.

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27

Opitz-Coutureau, Jörg. "Hyperthermische Streuung von Antimonclustern an unterschiedlich harten Oberflächen." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2005. http://dx.doi.org/10.18452/15189.

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Die Oberflächen-stoßinduzierte Fragmentierung von reinen und gemischten Antimonclustern wurde im Bereich hyperthermischer Kollisionsenergien untersucht. In diesem Energiebereich sind die Prozesse des Ladungstransfers, des Energietransfers sowie der Fragmentierung der Cluster besonders wichtig. Die Cluster wurden in einer gepulsten Bogenentladungsquelle erzeugt und nach Massenselektion in einem Flugzeit-Massenspektrometer mit sechs verschiedenen Oberflächen (Diamant, Siliziumdioxid, Antimon(III)oxid, Gold, Graphit und einer fluorierten organischen Monolagenoberfläche (C10-F-SAM)) unter Ultrahochvakuumbedingungen zur Wechselwirkung gebracht. Die daraus hervorgehenden ionischen Produkte wurden in einem zweiten Flugzeit-Massenspektrometer analysiert. Der Ladungstransfer zwischen Projektilion und Oberfläche zeigte deutliche Unterschiede in Abhängigkeit von der Oberfläche. Dieser Effekt wurde anhand der Gesamtfragmentionenausbeute studiert und kann gut durch die unterschiedlichen Austrittsarbeiten beschrieben werden. Die Effektivität der Oberflächen hinsichtlich des Transfers von kinetischer in innere Energie der auftreffenden Cluster ließ sich aus den Massenspektren der Fragmentionen bestimmen. Diese konnten aufgrund der bekannten Bindungsenergien der Antimon-Cluster mittels der Thermometermolekülmethode ausgewertet werden. Es wurde eine für alle Clustergrößen charakteristische Korrelation zwischen Energietransfereffektivität und Oberfläche festgestellt. Von allen untersuchten Oberflächen zeigt die F-SAM-Oberfläche den geringsten Energieübertrag. Der höchste Energieübertrag wird bei der Streuung an der Diamantoberfläche gemessen. Die Energieübertragseffektivität der anderen Oberflächen reiht sich zwischen diesen beiden Extremen ein. Diese Korrelation konnte sowohl mit makroskopischen (Härte) als auch mit mikroskopischen (Bindungsenergie, interatomare Abstände und Debye-Temperatur) Eigenschaften der zugehörigen Festkörper erklärt werden.
Surface-induced fragmentation of pure and mixed antimony clusters was investigated within the hyperthermal collision energy range. Charge transfer, energy transfer and fragmentation of the clusters are important processes in this range. Clusters were produced in a pulsed arc-discharge cluster ion source (PACIS) and mass-selected in a time-of-flight mass spectrometer. In a next step, the clusters were brought into interaction with six different surfaces (diamond, silicon dioxide, antimony(III)oxide, gold, graphite and a self-assembled organic mono-layer surface (C10-F-SAM)) under ultra-high vacuum conditions. The emerging product ions were analysed in a second time-of-flight mass spectrometer. A notable difference between the six surfaces was found with respect to the charge transfer between projectile ion and surface. This effect was analysed in considering the total fragment ion yield and can be attributed to the different work functions of these surfaces. The transfer from translational energy into vibrational modes of the impinging clusters has been determined from the mass spectra of the fragment ions as a function of the surface. The known binding energies of the antimony clusters allow the use of the thermometer molecule model to evaluate the fragment ion distribution. A correlation between the energy transfer efficiency and the type of surface was found which is valid for all cluster sizes. From all the surfaces, which have been investigated, the F-SAM surface shows the lowest and the diamond surface shows the highest energy transfer efficiency. The efficiency of the other surfaces falls in-between these two extremes. The correlation between the energy transfer efficiency of a surface and the kind of surface can be satisfactorily explained in terms of either macroscopic (hardness) or microscopic (binding energy, interatomic distances and Debye-temperature) properties of the solids.

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28

Mönnich, Julian [Verfasser], Tilmann [Akademischer Betreuer] Harder, Tilmann [Gutachter] Harder, and Thorsten [Gutachter] Brinkhoff. "Investigation of diatom-bacteria interactions with the model organism Thalassiosira rotula / Julian Mönnich ; Gutachter: Tilmann Harder, Thorsten Brinkhoff ; Betreuer: Tilmann Harder." Bremen : Staats- und Universitätsbibliothek Bremen, 2019. http://d-nb.info/1199537233/34.

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29

Weinzierl, Andrea Alessandra [Verfasser], Yves [Akademischer Betreuer] Harder, Yves [Gutachter] Harder, and Kilian [Gutachter] Eyerich. "Prä- und Postkonditionierung von ischämischem Haut- und Muskelgewebe mit Erythropoetin / Andrea Alessandra Weinzierl ; Gutachter: Yves Harder, Kilian Eyerich ; Betreuer: Yves Harder." München : Universitätsbibliothek der TU München, 2020. http://d-nb.info/1216996547/34.

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30

Fischer, Christian [Verfasser], Sjoerd [Akademischer Betreuer] Harder, Sjoerd [Gutachter] Harder, and Nicolai [Gutachter] Burzlaff. "Insights in Group 2 Metal Catalysis: new Ways and new Obstacles / Christian Fischer ; Gutachter: Sjoerd Harder, Nicolai Burzlaff ; Betreuer: Sjoerd Harder." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2020. http://d-nb.info/1223708225/34.

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31

Budík, Tomáš. "Zakružovačka na Hardox." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231242.

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This work describes the design of a dedicated three-rolls hydraulic bending for Hardox 500 without the possibility of bending sheet metal for the manufacture of pipes. The work will analyze the problem of proposed three-rolls bending, bending technology and creating of the pre-bending, the design of the adjusting hydraulic servo-cylinder, planetary gearboxes with hydraulic motors to drive the bottom rollers, a partial draft of the hydraulic circuit and the complete frame structure of bending machine with its covers.

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32

Yin, Xiuran [Verfasser], Tilmann [Akademischer Betreuer] Harder, Michael W. [Gutachter] Friedrich, and Jens [Gutachter] Harder. "Carbon Metabolism of Methylotrophic Methanogens and Asgard Archaea in Marine Sediments / Xiuran Yin ; Gutachter: Michael W. Friedrich, Jens Harder ; Betreuer: Tilmann Harder." Bremen : Staats- und Universitätsbibliothek Bremen, 2019. http://d-nb.info/1189309157/34.

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33

Hunsicker, Jamie. "Evaluation of the Kenton Hardin County Family Bike Program." Case Western Reserve University Doctor of Nursing Practice / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=casednp1571153144525499.

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34

Click, Sally Evelyn. "Melvene Draheim Hardee music maker and dreamer of dreams /." Bowling Green, Ohio : Bowling Green State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1237838404.

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35

Hahnke, Richard [Verfasser], Jens [Akademischer Betreuer] Harder, and Rudolf [Akademischer Betreuer] Amann. "Cultivation of Flavobacteria and other in situ abundant bacteria from the North Sea / Richard Hahnke. Gutachter: Jens Harder ; Rudolf Amann. Betreuer: Jens Harder." Bremen : Staats- und Universitätsbibliothek Bremen, 2013. http://d-nb.info/1072078058/34.

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Lüddeke, Frauke [Verfasser], Jens [Akademischer Betreuer] Harder, and Friedrich [Akademischer Betreuer] Widdel. "Genetische und biochemische Charakterisierung von Enzymen des anaeroben Monoterpen-Abbaus in Castellaniella defragrans / Frauke Lüddeke. Gutachter: Friedrich Widdel ; Jens Harder. Betreuer: Jens Harder." Bremen : Staats- und Universitätsbibliothek Bremen, 2011. http://d-nb.info/1071992902/34.

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37

Marmulla, Robert [Verfasser], Jens [Akademischer Betreuer] Harder, and Ulrich [Akademischer Betreuer] Ermler. "The anaerobic linalool metabolism in the betaproteobacteria Castellaniella defragrans 65Phen and Thauera linaloolentis 47Lol / Robert Marmulla. Betreuer: Jens Harder. Gutachter: Jens Harder ; Ulrich Ermler." Bremen : Staats- und Universitätsbibliothek Bremen, 2015. http://d-nb.info/1091548900/34.

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38

Spann, Jason Hans. "Hoosier National Forest Hardin Ridge Recreation Area redesign : a visitor experience oriented approach to the design and management of the Hardin Ridge recreation area." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1020169.

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This creative project examined design and management alternatives for the Hardin Ridge Recreation Area located in the Hoosier National Forest. The design intent of the project was to develop Hardin Ridge into a wildland recreation facility which offered visitors a variety of experiential opportunity and choice, and provided experiences which could effectively accommodate a demographically diversified population. This project would also provide environmental educational opportunities and attempt to retain the integrity of the sites natural systems. An examination of the importance and benefits of outdoor recreation, National Forest Service recreational planning, outdoor recreation demographic diversity and outdoor recreation design issues was conducted in formulating the projects design criteria and theory. This design criteria and theory was then utilized to create the design concepts directly applicable to the Hardin Ridge project site and develop a design ideology applicable to most U.S. wilderness recreation areas. The final product of the study was a design and management plan which effectively addressed the design objectives at Hardin Ridge and created a design model capable of meeting similar design objectives at the national level.
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39

Gehrke, Maik. "Funktionalisierung von Polystyren-Divinylbenzen-Harzen zur selektiven Festphasenextraktion von Aromastoffen." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=959276637.

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Schrod, Matthias. "Neue Methoden zur Synthese und Analyse von Phenol-Formaldehyd-Harzen." [S.l. : s.n.], 2002. http://elib.tu-darmstadt.de/diss/000287.

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41

Harder, Lisa Katharina [Verfasser]. "Magnetresonanztomographische und computertomographische Untersuchung der caninen Bandscheibendegeneration / Lisa Katharina Harder." Hannover : Bibliothek der Tierärztlichen Hochschule Hannover, 2015. http://d-nb.info/1073848981/34.

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Harder, Jörn [Verfasser], and E. [Akademischer Betreuer] Steck. "Simulation lokaler Fließvorgänge in Polykristallen / Jörn Harder ; Betreuer: E. Steck." Braunschweig : Technische Universität Braunschweig, 1997. http://d-nb.info/117589141X/34.

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43

Harder, Philip-Christian [Verfasser]. "Methode zur Bestimmung der Kristallstruktur von Nanodrähten / Philip-Christian Harder." Hamburg : Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky, 2020. http://d-nb.info/123415028X/34.

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44

Harder, Alexander [Verfasser]. "Optimierung und Charakterisierung eines Zwei-Photonen-Besselstrahl-Lichtscheibenmikroskops / Alexander Harder." Bonn : Universitäts- und Landesbibliothek Bonn, 2021. http://d-nb.info/1235525678/34.

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Harder, Jeremy Ian. "The effects of digital portfolios in math and science in a fourth grade classroom." Montana State University, 2012. http://etd.lib.montana.edu/etd/2012/harder/HarderJ0812.pdf.

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In this investigation digital portfolios were introduced as a means to improve student achievement in a math and science elementary classroom. By introducing digital portfolios, and analyzing data from surveys, questionnaires and assessment scores it was suggested that digital portfolios increase student engagement in math and science through self-monitoring, reflection and having a useful container for tasks in math and science. Portfolios also increase student interest in math and science and scores on unit assessments. Lastly, teacher best practices were also influenced positively through the treatment of digital portfolios in a fourth grade classroom.

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RESTA, FEDERICA. "Integrated Read-out Front-end for High-Energy Physics Experiments." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2017. http://hdl.handle.net/10281/158121.

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Le ricerche e le scoperte fatte nell'ambito della fisica sono fortemente dipendenti dall'efficienza e dall'affidabilità degli esperimenti ad alta energia. L'obiettivo principale è lo studio delle particelle che costituiscono la materia in termini di cariche elementari, loro interazioni e prodotti secondari che ne possono derivare. L'LHC (Large Hadron Collider) lavora al CERN ogni giorno con l’obiettivo di scoprire nuovi dettagli su particelle cariche come neutroni e Bosoni di Higgs. Queste sono generate e accelerate all’interno dell’LHC e vengono rilevate da opportuni detector organizzati in una struttura a shell. In questo modo, è possibile avere una caratterizzazione in termini di momento, carica elettrica, energia, tempo di volo e distanza associati alla particella rilevata. La progettazione dei rilevatori è importante come anche quella dell’elettronica vicina. Un grande esperimento richiede un duro lavoro di scienziati e ingegneri. Negli ultimi anni, l’elettronica è sempre più efficiente e compatta grazie alla sostituzione dei componenti discreti con circuiti integrati CMOS. La progettazione deve essere però fatta considerando sia le reti di interfacciamento con i sensori sia l’ambiente radiattivo circostante. Le radiazioni, infatti, possono modificare parzialmente o totalmente le performance e la scelta della tecnologia scalata può però essere di grande aiuto. In questo scenario, sono stati progettati, integrati e misurati 3 circuiti di lettura per esperimenti di fisica delle alte energie. 2 prototipi sono stati realizzati in tecnologia 130nm per l'esperimento ATLAS in collaborazione dell’Istituto Max-Plank di Monaco. Questi prototipi sono pensati per rilevare cariche fino a 100fC e convertirle in un segnale di tensione di ampiezza variabile che sarà processato in digitale per avere informazioni sull’istante di arrivo della carica e sulla sua intensità. A tal fine, gli integrati hanno uno stadio di discriminazione ed un Wilkinson ADC in grado di convertire in un tempo il segnale in tensione ricevuto. Il secondo prototipo è molto simile al primo. Esso è stato migliorato principalmente per poter essere più immune ai disturbi provenienti da masse e alimentazioni. Il terzo circuito presentato in questa tesi è un sistema di lettura progettato per Pixel detectors in tecnologia CMOS 28nm. Il canale integrato include un preamplificatore di carica con un comparatore in cascata. L'utilizzo della tecnologia 28nm con la sua ridotta alimentazione comporta una serie di difficoltà nella progettazione ma anche una maggiore resistenza alle radiazioni, consumi ridotti e una minor area occupata. I circuiti sono stati progettati per due differenti scenari in termini di capacità parassita del rilevatore, cariche di ingresso rilevabili, alimentazioni, soglie, consumi di potenza e rumore. In tutti i casi, però, i sistemi sono in grado di fornire le informazioni sulla carica rilevata in tempi relativamente rapidi (entro 25ns). Questo aspetto è molto importante e permette di evitare errori. Collisioni successive potrebbe causare segnali spuri e si potrebbe rilevare come unico evento due eventi distinti e consecutivi. Questo lavoro è organizzato come segue. La Parte I include una breve introduzione sull'intera attività svolta nei tre anni di attività di ricerca. La Parte II è dedicata alla descrizione semplificata del campo di applicazione ed ai target previsti per i prossimi esperimenti di fisica. In particolare, sono forniti alcuni dettagli su come l'elettronica può essere influenzata dalla presenza delle radiazioni. Le parti III e IV rappresentano il core della tesi perché mirano all'analisi dettagliata dei circuiti progettati e descritti precedentemente in maniera generica. L'analisi prevede una caratterizzazione completa degli integrati con simulazioni e misure. Infine, prima di concludere, la Parte V è dedicata alla pubblicazioni correlate all'attività di ricerca.
Physic researches and discoveries depend heavily from efficient and reliability of the High-Energy Physics (HEP) experiments. The main goal is to study the fundamental constituents of the matter in terms of elementary charge particles, their interactions and their secondary products. The Large Hadron Collider (LHC) at the CERN works every day to discover details on new charged particles as neutrinos and Higgs Bosons. Charges are generated and accelerated from beam collisions inside the LHC. Different detectors are organized in shell structures and are designed to detect few particles topology. Typically, the parameters useful to identify a charged particle are momentum, electrical charge, energy, time of flight and distance. Detectors design is important but it is enhanced from proper electronic readout systems. In the last years, electronics parts are more and more efficient and compact. CMOS integrated solution are preferred to discrete one allowing major reliability, cost reduction and performance improvement. The design is not trivial but not impossible. Some characteristics depend on the electronic designer and his capability to manage the external parasitic effects, as the parasitic capacitance of the connected detector. Unfortunately, phenomena as radiation effects on electronics must be taken in account but they are not completely eliminated. CMOS technology influences strongly the integrated circuit performance and radiation hardness. In this scenario, 3 readout frontend circuits for HEP experiments have been designed, integrated and measured. 2 of them represent 2 different prototypes realized in IBM 130nm technology for ATLAS experiment at CERN laboratory with Max-Plank Institute for Physics collaboration. They include an analog chain in cascade with a digital one. Input charges (up to 100fC) are detected and converted into voltage signals. Their amplitude are proportional to the input and are sent to the following digital part. The digital part provides information about arrival time and amount of the input charge. When the discriminator switches, an event is detected and the Wilkinson ADC starts the voltage-to-time conversion. The full chips have a JTAG section to manage all programmable parameters (i.e. thresholds, hysteresis, deadtime, etc.) The second prototype is designed improving the previous version in terms of supply rejection noise, deadtime range and hysteresis management. The third circuit presented in this thesis is the first readout frontend for Pixel detectors in 28nm technology. The channel includes a charge sensitive preamplifier with an inverter switched based comparator. Reduced supply voltage and 28nm technology imply some difficult in the design with a major tolerance to the radiations, a lower area occupancy and a lower power consumption. The circuits are been designed for 2 different scenarios in terms of detector parasitic capacitance, detectable input charges, supply voltage, threshold voltage, power consumption and noise. In overall cases, the integrated systems provide information about amount of detected input charge and arrival time within 25ns. This aspect is very important and allows avoiding mistakes. Successive collisions lead to spurious signals presence and a single detection could have information about two different events. Maintaining the processing time within 25ns, consecutive collisions are detected as different events. This work is organized as follows. Part I includes a brief summary of the entire work in order to fix the goals of my activities. Then, the Part II is dedicated on a simplified description of the application field and the next target of the future experiments. In particular, some details on the effects induced by the radiation to integrated electronic component are provided. Part III and Part IV represent the core, including 3 readout frontend circuits design and measurements. Finally, there are correlated publications and conclusions.

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Brand, Steffen [Verfasser], Sjoerd [Akademischer Betreuer] Harder, Sjoerd [Gutachter] Harder, Ralph [Gutachter] Puchta, and Reiner [Gutachter] Anwander. "Interplay of Lewis acidic s- and Lewis basic p-block complexes for molecule activation / Steffen Brand ; Gutachter: Sjoerd Harder, Ralph Puchta, Reiner Anwander ; Betreuer: Sjoerd Harder." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2020. http://d-nb.info/1219736759/34.

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Mersmann, Gerd. "Algebraische und kombinatorische Aspekte der Harder-Narasimhan-Rekursion und ihrer Umkehrung." Bonn : [s.n.], 1999. http://catalog.hathitrust.org/api/volumes/oclc/41464664.html.

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Lehment, Harmen [Verfasser]. "Devisenmarktinterventionen bei flexiblen Wechselkursen : Die Politik des Managed Floating / Harmen Lehment." Kiel, 2009. http://d-nb.info/1129602125/34.

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Harder, Johannes [Verfasser], and Thomas [Akademischer Betreuer] Carell. "Synthese und Anwendung dendritischer siRNA Strukturen / Johannes Harder. Betreuer: Thomas Carell." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2014. http://d-nb.info/105064803X/34.

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