Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 115 for “"V4"”.
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Modeling shape representation in visual cortex area V4
… (V1), progressing through intermediate area V4, and ascending to inferotemporal cortex. The computational mechanisms that produce representations in intermediate area V4 have remained a mystery. In this thesis I show that the standard model, a quantitative model which extends the classical …
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Variétés V2, V3, et variétés V4 à symétrie H2, H3
… équations d’Einstein pour des sous-variétés de V4. Dans la deuxième, partant de sous-variétés de V4 possédant les symétries de l’hyperbole H1, de l’hyperboloïde H2, et de l’hyperboloïde H3, on cherche les variétés pseudo-riemaniennes V4, munies de telles symétries."
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A prefrontal source of visual target enhancement in the macaque area V4
… of feature attention in the macaque visual area V4 by recording in V4 with and without muscimol inactivation in the VPA. We report here that neuronal activation in the VPA is necessary for firing rate increases related to target selection in V4. KEYWORDS: feature attention, visual search, …
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Evolution of FDI Hosting Economies in the Context of the Rapid Worldwide Diffusion of Robotics Technologies – Analysing the Manufacturing Sector of the V4 Countries
… than the less developed ones, like the V4. However, during the research, no evidence was found for the negative impact of robotisation on foreign direct investment in manufacturing. Accordingly, the manufacturing sectors of the V4 countries are still attractive destinations for …
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Railway cooperation among V4 states — The role of political spillovers in rail transport integration between the Czech Republic, Hungary, the Republic of Poland, and the Slovak Republic (1999–2021)
… transport cooperation. The examination of the V4 cooperation’s transport aspects is the linkage where the dissertation connects to research history in the topic. For an effective policy coordination among the Czech, Hungarian, Polish, and Slovakian governments as well as state authorities, it …
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Investigation of peptide-lipid interaction by fluorescence correlation spectroscopy
… of antimicrobial peptides (AMPs) called modified V4 (MV4s), was designed to have better solubility compared to original V4, which originated from a LPS-binding motif. The interaction between MV4s and different lipid model membranes was investigated using fluorescence correlation spectroscopy (FCS) …
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Magnetische und elektronische Eigenschaften von Übergangsmetalloxid-Nanostrukturen
… Verhalten bei Temperaturen T > 100 K, was auf V4+-Spindimere zurückgeführt werden kann. Zudem existieren quasi-freie V4+-Momente sowie längere Spinkettenfragmente, z.B. Trimere. Elektronische Anregungen im Valenzband können wahrscheinlich dem Platzwechsel von 3d-Elektronen zwischen V4+- und …
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The Effect of China’s Outward Foreign Direct Investment on the Economic Growth of the Visegrád Group
… on the economic growth of the Visegrád Group (V4), namely, the Czech Republic, Hungary, Poland, and Slovakia, both in short and long run, using annual data from 2004 to 2020. Various econometric models are employed to ensure the robustness of the findings, including panel-based Feasible …
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Effects of Resting State On Perceptual Learning
… extracellular recordings in visual cortical area V4 along with sleep classification in monkeys. V4 is a midlevel visual area that responds to shapes, textures, and colors. Additionally, V4 is important for perceptual learning and shows significant attentional effects. In this experiment, two …
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Integrated Study Of Dinoflagellate Diversity In The Gulf of Naples
… throughput sequencing (HTS) metabarcoding of the V4 region in the 18S rDNA. To taxonomically identify the metabarcode sequences, I established a database, called DinoREF, of taxonomically verified and nomenclaturally updated 18S reference barcodes with associated metadata. The reference sequences …
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The Pattern of Ventricular Repolarization during Therapeutic Hypothermia
… were obtained from the precordial lead V4 and V6 of ECG on arrival at the hospital, during TH, and after rewarming to the normal temperature. The QTc became prolonged in all cases during TH and recovered to near baseline after cessation of TH (baseline: 459 ± 30 ms, TH: 539 ± 50 ms, …
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Prediction of proton and carbon-13 NMR chemical shifts using chemical shift prediction programs
… use of multi-pulse techniques. CHARGE-V7, ACD-V4 (1H and 13C) predictor programs together with SpecInfo-V3.2 (1H and 13C) predictor program were used in the prediction of chemical shifts for alkaloids. The results obtained for flexible and rigid organic compounds indicate good calculation of …
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Determinación de daño y período crítico del virus del mosaico amarillo del frijol (BYMV) en cuatro variedades de frijol común (Phaseolus vulgaris L.) en Nicaragua
… fenológicas, siendo estas las etapas V2, V3, V4, R5 y un testigo sin inocular. De acuerdo a los resultados obtenidos en el estudio la variedad Criolla-A-1923 resultó la más afectada con reducciones que oscila entre 88.26% y 70.58% Resultando la variedad Criolla-A-2343 con daños que oscila …
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Economic complexity and product space of Visegrad countries : a new perspective on Czech Republic, Hungary, Poland and Slovakia
… trade data at a world level we find that V4 countries have complex economic structures. They also demonstrate a high level of robustness as they maintain consistent Economic Complexity Rankings when we vary the theory's underlying assumptions. We show that V4 countries have acquired …
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The Impact of Synchrony On Neuronal Coding and Behavior
… early and mid-level visual cortex (areas V1 and V4). We found a high prevalence of neuronal synchrony (vigorous (On) and weak (Off) spiking) in rest but low prevalence of synchrony during wakefulness. We next tested whether propagation of synchrony across cortical circuits is state dependent. By …
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Neural Activity Within and Between Visual and Executive Areas Is Modulated Post-Locomotion in Rhesus Macaques
… recordings simultaneously from area V4, a mid-tier visual cortical region, and the dorsolateral prefrontal cortex (dlPFC), a higher order executive area, while a rhesus macaque engaged in a visually guided behavioral choice task following a period of sustained physical activity. …
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Understanding the interplay between HIV-1 diversity, humoral immune responses and viral fitness
… five neutralization escape patterns in the V4 region of the envelope by 11 weeks post-infection. Four of these also conferred ADCC escape; however the fifth neutralization escape variant resulted in increased sensitivity to ADCC. This variant was eliminated in vivo by 29 weeks post …
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A study of the genital microbiotas of black South African women and men: associations with human papillomavirus and HIV infections
… profiled by Ion Torrent PGM sequencing of the V4 hypervariable region of the bacterial 16S rRNA gene (IT-V4 method). The cervicovaginal microbiotas (CVMs) were found to cluster into three distinct community state types (CSTs): Lactobacillus iners-dominated CVMs (CST I (38.7%, 24/62)), …
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Population Codes and Their Correlates In Decision Making
… early and mid-level visual cortex (areas V1 and V4) to discover that the precise temporal coordination between the spikes of three or more neurons carries information about perceptual reports in the absence of firing rate modulation. Perceptual accuracy was correlated with higher-order spiking …
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