Academic literature on the topic 'Analysis of directionality'

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Dissertations / Theses on the topic "Analysis of directionality"

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Iyun, Oluwatope Ebenezer. "Plant-wide diagnosis : cause-and-effect analysis using process connectivity and directionality information." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9296.

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Production plants used in modern process industry must produce products that meet stringent environmental, quality and profitability constraints. In such integrated plants, non-linearity and strong process dynamic interactions among process units complicate root-cause diagnosis of plant-wide disturbances because disturbances may propagate to units at some distance away from the primary source of the upset. Similarly, implemented advanced process control strategies, backup and recovery systems, use of recycle streams and heat integration may hamper detection and diagnostic efforts. It is import
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Martineau, Eugénie. "Linking single cell directionality to dynamic multicellular transitions in Myxococcus xanthus : a multiscale analysis." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0089.

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La δ-proteobactérie Myxococcus xanthus est étudiée depuis des décennies pour sa capacité à s’auto-organiser en réponse à des stimuli environnementaux. Cette bactérie colonise des niches écologiques favorables grâce à sa capacité à se mouvoir sur des surfaces. Cette motilité lui permet d’avoir un comportement prédateur envers des organismes proies, alors qu’en absence de nutriments, elle met en place un processus développemental permettant la formation de corps fructifères contenant des myxospores résistant aux stress environnementaux. Tous ces comportements multicellulaires requièrent un contr
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Parsa, Amanullah. "EFFECT OF BUILDING ORIENTATION ON STRUCTURAL RESPONSE OF REINFORCED CONCRETE MOMENT RESISTING FRAME STRUCTURES." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/theses/2698.

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In time history analysis of structures, the geometric mean of two orthogonal horizontal components of ground motion in the as-recorded direction of sensors, have been used as measure of ground motion intensity prior to the 2009 NEHRP provision. The 2009 NEHRP Provisions and accordingly the seismic design provisions of the ASCE/SEI 7-10, modified the definition of ground motion intensity measure from geometric mean to the maximum direction ground motion, corresponding to the direction that results in peak response of the oscillator. Maximum direction response spectra are assumed to envelope the
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Henebry, Michael Lee. "Biological and Ecological Trait Associations and Analysis of Spatial and Intraspecific Variation in Fish Traits." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/33894.

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Traits provide an informative approach to examine species-environment interactions. Often, species-by-species approaches are inefficient to generate generalizable ecological relationships and do not predict species responses to environmental changes based on specific traits species possess. Multiple lines of inquiry and multi-scale approaches are best for assessing environment-trait responses. This thesis examines important questions not specifically addressed before in traits-based research. Chapter one explores biological and ecological trait associations incorporating ontogenetic diet shift
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Appel, Jan Kristoffer [Verfasser]. "Particle Flux Directionality and other Aspects of the Martian Radiation Environment: An Analysis of MSL/RAD Observation Data and Simulation Data / Jan Kristoffer Appel." Kiel : Universitätsbibliothek Kiel, 2019. http://d-nb.info/1176518895/34.

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Plišková, Diana. "Analýza směrovosti neuritů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442501.

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Práca je zameraná na navrhnutie vhodnej metódy analýzy smerovosti neuritov. Využité boli snímky neurónov z fluorescenčnej mikroskopie. Pred samotnou segmentáciou bolo potrebné snímky predspracovať, pričom sa postupne využila úprava kontrastu, ostrenie a adaptívna filtrácia pomocou Weinerovského filtru. Jednotlivé návrhy metód segmentácie pozostávali z prostého prahovania, narastaním oblastí a využitím morfologických operácií. Následná analýza smerovosti využívala smer gradientov v obraze. Navrhnutá metóda bola využitá aj ako klasifikátor, ktorý dokázal rozdeliť jednotlivé snímky do skupín podľ
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Jeong, Sang Min. "Analysis of Vibration of 2-D Periodic Cellular Structures." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7122.

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The vibration of and wave propagation in periodic cellular structures are analyzed. Cellular structures exhibit a number of desirable multifunctional properties, which make them attractive in a variety of engineering applications. These include ultra-light structures, thermal and acoustic insulators, and impact amelioration systems, among others. Cellular structures with deterministic architecture can be considered as example of periodic structures. Periodic structures feature unique wave propagation characteristics, whereby elastic waves propagate only in specific frequency bands, known as "p
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Vecchi, Pierpaolo. "Defect analysis in directionally solidified multicrystalline silicon." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21177/.

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This project studies how the microstructure and metallic impurities affect the electrical properties of mc-Si wafers, to improve the efficiency and the production yield of photovoltaic solar cells. Dislocations and impurities in silicon are recombination centres that reduce free carrier lifetime and thus efficiency of solar cells. The quality of the material can be improved by finding optimal growth conditions and a threshold value for the contamination that does not compromise the device efficiency. Two sets of p-type mc-Si wafers located at different heights and lateral positions of two di
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Angart, Samuel Gilbert. "Microstructure Analysis Of Directionally Solidified Aluminum Alloy Aboard The International Space Station." Thesis, The University of Arizona, 2015. http://hdl.handle.net/10150/595975.

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This thesis entails a detailed microstructure analysis of directionally solidified (DS) Al-7Si alloys processed in microgravity aboard the International Space Station and similar duplicate ground based experiments at Cleveland State University. In recent years, the European Space Agency (ESA) has conducted experiments on alloy solidification in microgravity. NASA and ESA have collaborated for three DS experiments with Al- 7 wt. % Si alloy, aboard the International Space Station (ISS) denoted as MICAST6, MICAST7 and MICAST12. The first two experiments were processed on the ISS in 2009 and 2010.
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McAllister, Mark Laing. "Analysis of laboratory and field measurements of directionally spread nonlinear ocean waves." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28762.

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Surface gravity waves exist in the oceans as multi-directional nonlinear phenomena. Understanding how these two properties interact is intrinsically important in itself. Furthermore, an understanding of this relationship may be used to gain insight into other oceanic phenomena. This thesis first describes an experimental investigation into the relationship between directionality and non-linearity (Part I). This relationship was then used as a tool to estimate the directional spreading of field data (Part II). Experiments have been conducted in which directionally spread focused wave groups wer
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