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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 21 to 30 of 33 (0.042 seconds)Spelling suggestions: "subject:"stan""
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Cyclopentadienyl Free Compounds of p, d, and f Elements / Cyclopentadienyl freie Komplexe von p, d und f ElementenNeculai, Dante 08 May 2003 (has links)
No description available.
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Les écoutes radioélectriques et les services techniques des Transmissions dans la Résistance française, 1940-1945 : le Groupement des contrôles radioélectriques (GCR), le Service des transmissions nationales (STN) et le « Groupe Romon » du Service de renseignements (SR) Alliance / The radio listening and the technical services of Transmissions in the French Résistance, 1940-1945Romon, François 15 April 2015 (has links)
Une forme de résistance spécifique et méconnue : la continuation du combat contre l’envahisseur allemand menée au sein des services techniques des Transmissions de l’armée française, notamment du Groupement des contrôles radioélectriques (GCR), dès le lendemain de l’armistice de juin 1940, et poursuivie jusqu’à la victoire finale. Une résistance initiée par des officiers des Transmissions au coeur même des institutions de l’Etat français, consistant à communiquer secrètement du renseignement militaire aux Forces alliées. Cette résistance latente débouche, après novembre 1942, sur une résistance active par la formation d’un réseau clandestin, le Service des transmissions nationales (STN), sous l’égide de NAP-PTT, puis sur son intégration, en octobre 1943, sous le nom de « Groupe Romon », au réseau Alliance, ainsi que sur l’entrée de nombreux opérateurs radio du GCR dans divers autres réseaux de résistance.Le cas d’une résistance intérieure, qui a contribué efficacement à la victoire finale des Forces alliées, malgré une répression systématique et féroce de l’occupant. / A specific and hardly known way of resistance: the continuation of the fight against the german invader led within the technical services of Transmissions of French army, especially the Groupement des contrôles radioélectriques (GCR), the Radio control Group, immediatly after the armistice of June 1940 and carried on until the final victory. A resistance at the initiative of Transmission officers, which, at the heart of the institutions of the Etat français, French State, have secretly communicated military intelligence to the allied Forces. This latent resistance leads, after november 1942, up to an active resistance by the implementation of a clandestine network, the Service des transmissions nationales (STN), the National Transmissions Service, under the aegis of NAP-PTT, then to its integration, in october 1943, under the name « Groupe Romon », to the resistance network Alliance, as well as the commitment of numerous GCR transmitters in various other resistance networks.The case of a resistance from the inside which has effectively contributed to the final victory of the Allied, despite a systematic and ferocious repression from the occupant.
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Across Borders : A Histological and Physiological Study of the Subthalamic Nucleus in Reward and MovementSchweizer, Nadine January 2016 (has links)
The basal ganglia are the key circuitry controlling movement and reward behavior. Both locomotion and reward-related behavior are also modified by dopaminergic input from the substantia nigra and the ventral tegmental area (VTA). If the basal ganglia are severed by lesion or in disease, such as in Parkinson’s disease, the affected individuals suffer from severe motor impairments and often of affective and reward-related symptoms. The subthalamic nucleus (STN) is a glutamatergic key area of the basal ganglia and a common target for deep brain stimulation in Parkinson’s disease to alleviate motor symptoms. The STN serves not only motoric, but also limbic and cognitive functions, which is often attributed to a tripartite anatomical subdivision. However, the functional output of both VTA and STN may rely more on intermingled subpopulations than on a strictly anatomical subdivision. In this doctoral thesis, the role of subpopulations within and associated with the basal ganglia is addressed from both a genetic and a behavioral angle. The identification of a genetically defined subpopulation within the STN, co-expressing Paired-like homeodomain transcription factor 2 (Pitx2) and Vesicular glutamate transport 2 (Vglut2), made it possible to conditionally reduce glutamatergic transmission from this subgroup of neurons and to investigate its influence on locomotion and motivational behavior, giving interesting insights into the mechanisms possibly underlying deep brain stimulation therapy and its side-effects. We address the strong influence of the Pitx2-Vglut2 subpopulation on movement, as well as the more subtle changes in reward-related behavior and the impact of the alterations on the reward-related dopaminergic circuitry. We also further elucidate the genetic composition of the STN by finding new markers for putative STN subpopulations, thereby opening up new possibilities to target those cells genetically and optogenetically. This will help in future to examine both STN development, function in the adult central nervous system and defects caused by specific deletion. Eventually identifying and characterizing subpopulations of the STN can contribute to the optimization of deep brain stimulation and help to reduce its side-effects, or even open up possibilities for genetic or optogenetic therapy approaches.
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Rôle du noyau subthalamique et de ses afférences hyperdirectes provenant du cortex préfrontal dans le codage et la recherche de récompense chez le rat / Role of the subthalamic nucleus and its prefrontal afferences of the hyperdirect pathway in reward processes and coding in ratsTiran-Cappello, Alix 02 October 2018 (has links)
La stimulation cérébrale profonde (SCP) est actuellement un traitement efficace pour la maladie de parkinson. Cette approche est maintenant fortement envisagée pour le traitement des addictions. Elle consiste à délivrer des impulsions électriques au sein d’une structure cérébrale : le noyau subthalamique. Nous avons montré dans le noyau subthalamique l’existence de signatures associée à la transition vers l’addiction et la prise compulsive de drogue, ainsi que le potentiel thérapeutique de la SCP pour réduire la consommation pathologique et compulsive de cocaïne chez des rats. Nous avons également montré le contrôle spécifique du noyau subthalamique sur la motivation pour la nourriture sucrée et les drogues d’abus. Dans l’ensemble, cette thèse devrait permettre une meilleure compréhension des mécanismes de la SCP, de son potentiel thérapeutique pour les addictions et de ses éventuels effets secondaires. / Deep brain stimulation (DBS) is currently one form of effective treatment for Parkinson’s disease. This approach is currently considered for the treatment of addiction. It consists in the delivery of small electric impulses inside a brain structure: the subthalamic nucleus. We have shown in the subthalamic nucleus the existence of signature associated with the transition to addiction and compulsive drug abuse, as well as the therapeutic potential of DBS to reduce pathological intake and compulsive cocaine abuse in rats. We also established the specific control exerted by the subthalamic nucleus on the motivation for sweet food and drug of abuse. Overall this thesis could allow a better understanding of the mechanisms of DBS, its therapeutic potential in addiction and possible side effects.
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Germanium-, Tin-, Lead-, and Bismuth-Containing <i>β</i>-Diketiminato Complexes for the Synthesis and Structural Characterization of Hydroxide, Carboxylic Acid, Heterobimetallic Oxide, Transition Metal-Main Group, Hydride and Halide Compounds / Germanium-, Tin-, Lead-, and Bismuth-Containing <i>β</i>-Diketiminato Complexes for the Synthesis and Structural Characterization of Hydroxide, Carboxylic Acid, Heterobimetallic Oxide, Transition Metal-Main Group, Hydride and Halide CompoundsPineda Cedeno, Leslie William 03 May 2006 (has links)
No description available.
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New Methods for the Syntheses of Amido, Imido, Nitrido and Dinitrogen Metal Complexes and Organometallic Hydrides and Oxides / Neue Methoden zur Synthese von Amido-, Imido-, Nitrido- und Distickstoff-Metallkomplexen und metallorganischen Hydriden und OxidenBai, Guangcai 02 May 2001 (has links)
No description available.
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Preclinical Modeling of Treatment-induced Impulsivity in Parkinson's DiseaseAleksandrova, Lily R 20 November 2013 (has links)
Dopamine agonist therapy and deep brain stimulation (DBS) are both linked to increased impulsivity in Parkinson’s disease (PD), but the underlying mechanisms remain unclear. We trained intact and PD-like rats on a rat gambling task (rGT) measuring impulsive choice and
premature responding. Animals were then retested with/without treatment, pramipexole (PPX) or DBS, administered chronically prior to rGT testing. Early PD-like rats did not exhibit major differences in rGT performance or treatment response. Our work suggests that DBS and PPX are not intrinsically linked with increases in impulsivity. Neither DBS nor PPX disrupted gambling-like behaviour in our paradigm, while differential effects on premature and perseverant responding in the task were observed with treatment. Based on our findings, the previously reported ability of PPX to increase impulsive choice might not be mediated by the dopamine D3 receptor. Interestingly, our work suggests that the effects of STN-DBS on impulse control might be amplitude-dependent.
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Preclinical Modeling of Treatment-induced Impulsivity in Parkinson's DiseaseAleksandrova, Lily R 20 November 2013 (has links)
Dopamine agonist therapy and deep brain stimulation (DBS) are both linked to increased impulsivity in Parkinson’s disease (PD), but the underlying mechanisms remain unclear. We trained intact and PD-like rats on a rat gambling task (rGT) measuring impulsive choice and
premature responding. Animals were then retested with/without treatment, pramipexole (PPX) or DBS, administered chronically prior to rGT testing. Early PD-like rats did not exhibit major differences in rGT performance or treatment response. Our work suggests that DBS and PPX are not intrinsically linked with increases in impulsivity. Neither DBS nor PPX disrupted gambling-like behaviour in our paradigm, while differential effects on premature and perseverant responding in the task were observed with treatment. Based on our findings, the previously reported ability of PPX to increase impulsive choice might not be mediated by the dopamine D3 receptor. Interestingly, our work suggests that the effects of STN-DBS on impulse control might be amplitude-dependent.
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Rozpoznávání historických textů pomocí hlubokých neuronových sítí / Convolutional Networks for Historic Text RecognitionKišš, Martin January 2018 (has links)
The aim of this work is to create a tool for automatic transcription of historical documents. The work is mainly focused on the recognition of texts from the period of modern times written using font Fraktur. The problem is solved with a newly designed recurrent convolutional neural networks and a Spatial Transformer Network. Part of the solution is also an implemented generator of artificial historical texts. Using this generator, an artificial data set is created on which the convolutional neural network for line recognition is trained. This network is then tested on real historical lines of text on which the network achieves up to 89.0 % of character accuracy. The contribution of this work is primarily the newly designed neural network for text line recognition and the implemented artificial text generator, with which it is possible to train the neural network to recognize real historical lines of text.
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Design of Phosphorus Centered Janus Head Ligands / Design phosphorzentrierter Januskopf-LigandenObjartel, Ina 31 October 2011 (has links)
No description available.
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