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Dissertations / Theses on the topic 'Blender Studios'

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Published: 10 January 2023
Last updated: 28 January 2023

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1

Deb, Nabankur. "Morphological studies in polymer-fullerene blends." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54381.

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Polymer-fullerene blend systems have found relevance and application in a number of fields including organic photovoltaic devices. While synthesizing new materials with desirable electronic properties is essential to designing better photovoltaic devices, it is equally important to understand the complex phase morphology of these blends and its effect on device performance. Consequently, this knowledge could be used to further design new materials and device architecture for more efficient systems. In particular, this dissertation focuses primarily on the morphology in a series of amorphous as well as semi-crystalline polymer-fullerene blend systems both in bulk and thin films and its relation to device performance. Scattering based techniques have been used to determine in-plane and out-of-plane phase morphology. Morphological parameters derived from these studies have shown possible correlation between fullerene segregation and device performance values. The results of these studies have been used to synthesize a thermo-cross-linkable fullerene acceptor having slower diffusion through the polymer, allowing better control of the polymer-fullerene blend morphology. Consequent effects have been studied on device lifetime and thermal stability and have shown significant improvements
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2

Kays, Cory Asher. "Multidisciplinary methods for performing trade studies on blended wing body aircraft." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82485.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2013.
This electronic version was submitted and approved by the author's academic department as part of an electronic thesis pilot project. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from department-submitted PDF version of thesis
Includes bibliographical references (p. 99-102).
Multidisciplinary design optimization (MDO) is becoming an essential tool for the design of engineering systems due to the inherent coupling between discipline analyses and the increasing complexity of such systems. An important component of MDO is effective exploration of the design space since this is often a key driver in finding characteristics of systems which perform well. However, many design space exploration techniques scale poorly with the number of design variables and, moreover, a large-dimensional design space can be prohibitive to designer manipulation. This research addresses complexity management in trade-space exploration of multidisciplinary systems, with a focus on the conceptual design of Blended Wing Body (BWB) aircraft. The objectives of this thesis are twofold. The first objective is to create a multidisciplinary tool for the design of BWB aircraft and to demonstrate the performance of the tool on several example trade studies. The second objective is to develop a methodology for reducing the dimension of the design space using designer-chosen partitionings of the design variables describing the system. The first half of this thesis describes the development of the BWB design tool and demonstrates its performance via a comparison to existing methods for the conceptual design of an existing BWB configuration. The BWB design tool is then demonstrated using two example design space trades with respect to planform geometry and cabin bay arrangement. Results show that the BWB design tool provides sufficient fidelity compared to existing BWB analyses, while accurately predicting trends in system performance. The second half of this thesis develops a bi-level methodology for reducing the dimension of the design space for a trade space exploration problem. In this methodology, the designer partitions the design vector into an upper- and lower-level set, wherein the lower-level variables essentially serve as parameters, in which their values are chosen via an optimization with respect to some lower-level objective. This reduces the dimension of the design space, thereby allowing a more manageable space for designer interaction, while subsequently ensuring that the lower-level variables are set to "good" values relative to the lower-level objective. The bi-level method is demonstrated on three test problems, each involving an exploration over BWB planform geometries. Results show that the method constructs surrogate models in which the sampled configurations have a reduction in the system objective by up to 4 % relative to surrogates constructed using a standard exploration. Furthermore, the problems highlight the potential for the framework to reduce the dimension of the design space such that the full space can be visualized.
by Cory Asher Kays.
S.M.
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3

Chim, Tat-mei Alice, and 詹達美. "An instructional design theory guide for blended learning courses." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B30406213.

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4

Saghafi, Mahmoud Reza. "A holistic blended design studio model: Exploring and expanding learning opportunities." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/180769/3/Mahmoud_Saghafi_Thesis.pdf.

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While the studio environment has been promoted as an ideal educational setting for project-based disciplines, only a few comprehensive qualitative studies of the design studio have been undertaken; even fewer emphasise educator and student perceptions of this environment. As highlighted in this study, such a situation is problematic given the changes and challenges facing higher education, including those associated with new technologies such as online learning. This study responds to this need for a comprehensive study of the studio environment by adopting Grounded Theory methodology in a qualitative comparative way. It explores the limitations and benefits of a face-to-face design studio and virtual design studio as experienced by architecture students and educators at an Australian university in order to better understand the potential of a blended environment to maximise learning. The main outcome is a holistic multidimensional blended learning model that, through the various modalities, provides adaptive capacity in a range of settings. The model facilitates learning through self-determination, self-management, and the personalisation of the learning environment. Another outcome–a conceptual design education framework–provides a basic tool for educators to evaluate existing learning environments and to develop new learning environments with enough flexibility to respond effectively to a highly dynamic and increasingly technological world.
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5

McNally, John Anthony. "Studies on blends of polymers with bitumen." Thesis, Queen's University Belfast, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318801.

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6

Fernandez, Fernandez Maria Luisa. "Mixing and demixing studies in polymer blends." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47432.

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7

Sham, C. K. "Studies of poly (vinyl chloride)/polyacrylate blends." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37850.

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8

Izumitani, Tatsuo. "Studies of Spinodal Decomposition of Polymer Blends." 京都大学 (Kyoto University), 2002. http://hdl.handle.net/2433/149438.

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9

Wu, Aiping. "Controlled Oxidation Studies of Coal/Refuse Fuel Blends." TopSCHOLAR®, 1994. http://digitalcommons.wku.edu/theses/956.

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A study of the controlled combustion of blends of biomass materials and coals was conducted. Crushed limestone was added to the blends as an absorbent for sulfur oxides. The samples were combusted in quartz-fiber crucibles in a forced air furnace. Combustion at different times and temperatures were studied. The amount of carbon, hydrogen, and sulfur in the residues, as well as the amount of ash formed, were used as measures of combustion efficiency. The optimum temperature for combustion of most blends was found to be in the 700 - 800°C range. A study of methods for determining the amounts of inorganic and organic carbon in combustion residues was performed. The American Society for Testing and Materials (ASTM) Method D 1756 for inorganic carbon yielded accurate results but is tedious and requires a great deal of skill. An alternative method for determining inorganic carbon in combustion residues was developed.
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10

Camiruaga, Elisa M. Elexpuru. "Miscibility studies of polymer blends involving acrylonitrile copolymers." Thesis, Heriot-Watt University, 1990. http://hdl.handle.net/10399/883.

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11

Watson, Linda M. "Miscibility studies in statistical copolymer and terpolymer blends." Thesis, Heriot-Watt University, 1994. http://hdl.handle.net/10399/1393.

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12

Oliver, Sarah Louise. "Solid-state NMR studies of compatibilised polymer blends." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285638.

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13

Längin, Dirk. "Blended learning in der forstlichen Hochschullehre eine Untersuchung im südlichen Afrika." Freiburg i. Br. Rombach, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?idn=979174457.

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14

Björström, Cecilia. "Morphology studies of thin films of polyfluorene: fullerene blends." Licentiate thesis, Karlstad University, Division for Engineering Sciences, Physics and Mathematics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-2361.

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The formation of thin films of polymer blends by spin-coating from solution is characterised by rapid solvent quenching, a process that results in non-equilibrium morphologies. Thin films of conjugated polymer blends are used as the active material in polymer solar cells, in which the morphology may have drastic effects on device performance.

In this thesis results from morphology studies are presented for spin-coated thin films of polyfluorenes and co-polymers of polyfluorene blended with the fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). The surface morphology was investigated by atomic force microscopy (AFM) and was found to depend on the blend ratio as well as the chemical structure of the blend components. The spin speed, which determines the thickness of the spin-coated thin films, was also found to influence the morphology. Secondary ion mass spectrometry (SIMS) was used for depth profiling of the chemical composition in thin films of poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-5,5-(4´,7´-di-2-thienyl-2´,1´,3´-benzothiadiazole)] (LBPF5) blended with PCBM. The films were found to be vertically phase separated with a four-fold multilayered structure.

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15

De, Luca Daniele. "Cortometraggio 3D per il progetto CINECA MDC - Museo della Città di Bologna Modellazione, rendering e studio delle fonti storiche." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/1907/.

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16

Halverson, Taylor David. "Improving blended learning environments for biblical studies applications of the "innovations in distance education" theory /." [Bloomington, Ind.] : Indiana University, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3238499.

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Thesis (Ph.D.)--Indiana University, Dept. of Instructional Systems and Technology and Religious Studies, 2006.
"Title from dissertation home page (viewed July 12, 2007)." Source: Dissertation Abstracts International, Volume: 67-10, Section: A, page: 3695. Adviser: Charles M. Reigeluth.
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17

Okerberg, Brian. "Morphological Studies of Crystallization in Thin Films of PEO/PMMA Blends." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/29213.

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Morphological development during crystallization of thin films of poly(ethylene oxide) (PEO) / poly(methyl methacrylate) (PMMA) blends has been reported. Studies have focused on the effects of the blend composition, PMMA molecular weight, film thickness, and crystallization temperature on the observed crystal morphology. As the blend composition was varied from 90 to 30 wt% PEO, the crystal morphology varied from spherulites to needles and dendrites. Variation of the crystallization temperature and PMMA molecular weight resulted in similar changes in morphology. A morphological map demonstrating the roles of the experimental controls on the observed crystal morphology has been developed. This map was used as a tool for more detailed studies of the observed morphologies and morphological transitions. The dendritic region of the map (~ 30 = 40 wt% PEO) was studied in detail. Changes in the diffusion length were achieved through variation of the PMMA molecular weight, and were shown to influence the secondary sidebranch spacing. Sidebranch spacing measurements revealed that coarsening of the dendritic microstructure occurred well after the competition between diffusion fields of neighboring dendrite arms vanished, indicating the existence of another coarsening mechanism. These studies of dendritic sidebranching indicate that polymer dendrites develop by mechanisms similar to those in small molecules and metals. A number of in-situ observations of morphological transitions have also been reported, including a dense-branched morphology (DBM)/dendrite transition, a DBM/stacked-needle/needle transition, and a transition from dendrites with 90o sidebranching to dendrites with 45o branching or a dense-branched morphology, both of which grow at 45o to the original dendrite trunk. The DBM/dendrite transition occurred over a range of crystallization temperatures, indicating that the transition is not sharp. Crystal growth rate measurements verified this result. The DBM/stacked-needle/needle transitions demonstrated distinct jumps in the crystal growth rate, indicating a change in the growth mechanism or direction. For the transition involving a change in the growth direction, the effective level of noise (fluctuation) was found to be important in morphological selection. The results of this work have helped to define new directions for the study of crystal morphologies, especially in the areas of spherulite formation and dendritic growth.
Ph. D.
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18

Adedeji, Adeyinka. "Morphological studies of homopolymer/block copolymer blends with exothermic interfacial mixing." Case Western Reserve University School of Graduate Studies / OhioLINK, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=case1058451685.

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19

Sohal, Nisha. "Solid state nuclear magnetic resonance studies of a polymer blend." Thesis, Imperial College London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501767.

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20

Hodgson, Andrew William. "Solid-state nuclear magnetic resonance studies of a polymer blend." Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.401862.

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21

Dyer-Smith, Clare. "Spectroscopic studies of excited states in polyfluorene:small molecule blend films." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/7128.

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In organic solar cells, understanding of interfacial processes and energy losses governing device performance is crucial to the development of new organic photovoltaic materials. This thesis reports on spectroscopic studies addressing the conditions for interfacial excited-state losses in donor-acceptor organic blends based on polyfluorene copolymers. The first chapter of results addresses the process of energy transfer in polyfluorene:fullerene blends. Novel fullerene materials based upon multiply substituted C60 and C70 are used in order to modify the energy levels, packing and photophysics in the blend. In these blends, a limitation becomes apparent in that an increase in the offset between the donor ionisation potential and the acceptor electron affinity (expected to increase the open circuit voltage) is accompanied by a loss in photocurrent and the formation of fullerene singlet and triplet states, above a threshold offset of 1.6 electronvolts. Spectroscopic measurements support a mechanism of resonant energy transfer from polymer to fullerene as a process leading to significant energy loss. In these polymers, the efficiency of hole transfer relative to fullerene intersystem crossing influences charge generation yield. The second chapter of results addresses charge transfer ('exciplex') emission as an important source of information about the photophysics of organic-organic interfaces. Blends of emissive polyfluorenes with n-type silole derivatives exhibit charge transfer emission from an interfacial state. The decrease in oscillator strength of the exciplex emission with exciplex energy is assigned to an increase in charge transfer character, explained either by the presence of electron withdrawing moieties, or an increase in solid-state ordering. The third results chapter presents a photophysical study of a silicon-bridged polyindenofluorene polymer blended with the fullerene PCBM. In this system the lifetime of the polymer triplet displays a dependence upon PCBM content in the film, indicating that the polymer triplet dynamics are influenced by interfacial processes.
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22

Lucchi, Asia. "Studio e Sperimentazione di Chatbot Generative allo Stato dell’Arte con Applicazione alla Pandemia da Covid19." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21611/.

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Fin dalla nascita dei primi calcolatori, gli studiosi sono risultati tanto affascinati quanto allarmati dall'idea di costruire un sistema che potesse pensare ed agire razionalmente, come un essere umano. Una delle caratteristiche fondamentali che le Intelligenze Artificiali devono possedere per apparire intelligenti è la capacità di conversare come esseri umani, riuscendo a comprendere ciò che dice l'interlocutore in tutte le sue sfumature e formulando una risposta non solo corretta, ma realistica. Anche se attualmente le chatbot sono principalmente usate dalle aziende come operatori virtuali per rispondere alle domande dei clienti con alcune frasi standard, l'obiettivo primario della ricerca è lo sviluppo di prototipi il cui unico scopo è l'interazione empatica con l'essere umano. Nel lavoro di tesi vengono approfondite tecnologie e le innovazioni più recenti legate all'evoluzione delle chatbot. Si discute delle varie tipologie di chatbot esistenti, delle architetture su cui sono basate, dei modelli di riferimento con le loro problematiche e dei sistemi all'avanguardia prodotti da noti gruppi di ricerca high-tech. Infine si utilizza uno di tali sistemi per sviluppare una chatbot in grado di fare conversazione sul COVID-19.
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23

Takenaka, Mikihito. "Scattering Studies of Self-Assembling Processes of Polymer Blends in Spinodal Decomposition." Kyoto University, 1993. http://hdl.handle.net/2433/74617.

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24

O'Neill, Jason Michael. "Multidimensional Mass Spectrometry Studies on Amphiphilic Polymer Blends and Cross-Linked Networks." University of Akron / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1624375174939496.

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25

Favi, Pelagie Marlene. "Electrospun Blends of Polydioxanone and Poly(lactic Acid): Mechanical, Morphological, and Permeability Studies." VCU Scholars Compass, 2007. http://hdl.handle.net/10156/1271.

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26

Sweed, Muhamed. "Co-crystallization in polyolefin blends studied by various crystallization analysis techniques." Thesis, Link to the online version, 2006. http://hdl.handle.net/10019.1/2733.

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27

Enarsson, Anna. "New Blends in the English Language." Thesis, Karlstad University, Faculty of Arts and Education, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-674.

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Titel: New Blends in the English Language

Författare: Anna Enarsson

Antal sidor: 29

Abstract: The aim of this essay was to identify new blends that have entered the English language. Firstly six different word-formation processes, including blending, was described. Those were compounding, clipping, backformation, acronyming, derivation and blending. The investigation was done by using a list of blends from Wikipedia. The words were looked up in the Longman dictionary of 2005 and in a dictionary online. A google search and a corpus investigation were also conducted. The investigation suggested that most of the blends were made by clipping and the second most common form was clipping and overlapping. Blends with only overlapping was unusual and accounted for only three percent. The investigation also suggested that the most common way to create blends by clipping was to use the first part of the first word and the last part of the second word. The blends were not only investigated according to their structure but also according to the domains they occur in. This part of the investigation suggested that the blends were most frequent in the technical domain, but also in the domain of society

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28

Sugimura, Kazuki. "Comparative Studies on Miscibility and Intermolecular Interaction for Cellulose Ester Blends with Vinyl Copolymers." Kyoto University, 2015. http://hdl.handle.net/2433/200460.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第19197号
農博第2136号
新制||農||1034(附属図書館)
学位論文||H27||N4943(農学部図書室)
32189
京都大学大学院農学研究科森林科学専攻
(主査)教授 西尾 嘉之, 教授 木村 恒久, 教授 髙野 俊幸
学位規則第4条第1項該当
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29

Faist, Mark Anton. "Spectroscopic studies of the charge transfer state and device performance of polymer:fullerene photovoltaic blends." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/11191.

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In organic solar cells, the understanding of loss mechanisms, especially the energetic losses driven by the offset at type-II heterojunction and recombination, are crucial to improve the device performance. The best-performing organic solar cells are polymer:fullerene blends, and despite an abundance of donor materials, phenyl-C61/71-butyric acid methyl ester (PCBM) remains the most-used acceptor material. In this thesis, we use fullerene multiadducts as new acceptor materials that allow us to study energetic losses in polymer:fullerene blends by tuning the offset at the heterojunction. In addition, we analyse their performance in blends with high-performance polymer donors. The first chapter of results addresses design rules for fullerene multiadducts and energetic disorder. By adding multiple sidechains to the fullerene cage, the LUMO level can be raised by up to 400 meV compared to PCBM, which allows increased open circuit voltages. Fullerene multiadducts, however, are a mixture of different isomers with increased packing and energetic disorder and show reduced electron transport. Using Differential Pulse Voltammetry measurements, we quantify the amount of energetic disorder present in a variety of fullerene multiadducts. In the second results chapter, the fullerene multiadducts are employed in photovoltaic devices with poly(3-hexylthiophene) (P3HT) and other donor polymers. While most fullerene multiadducts perform reasonably well with P3HT as donor, their performance in blends with other donor polymers is usually much lower when compared to blends with PCBM as acceptor. We find that for many polymer:fullerene blends with multiadducts, the offset of the organic heterojunction is too small to allow efficient charge generation, especially for donor polymers optimised for PCBM. Even if the offset in the blend is sufficiently high, the lower electron mobility of the fullerene multiadducts is likely to reduce device performance, only donors featuring high hole mobility and high crystallinity show reasonable performance. Energetic losses in organic solar cells and limits of the charge transfer (CT) state energy are studied in the third results chapter of the thesis. We establish that electroluminescence (EL) from the CT state originates from transport levels in the density of states and that the spectrum shifts very little with increased injection currents. This allows us to use the EL emission peak as a proxy for the energy of the CT state. By employing indenofullerene multiadducts in blends with various polymers, we consistently find an additional loss pathway via polymer or fullerene exciton formation. If the energy of the CT state approaches the smaller optical bandgap of either component in the blends (Eopt,min), photocurrent and fill factor are likely to be reduced by increased recombination. We find this reduced performance in a number of blends, which allows us to empirically determine an limit of the open circuit voltage for efficient solar cell relative to Eopt,min for these systems.
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Benson, Jessica J. "Spectroscopic studies of organic donor-acceptor blend films for solar cell applications." Thesis, Imperial College London, 2007. http://hdl.handle.net/10044/1/11386.

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Using several organic electron donor and electron acceptor materials, solution cast blend films were studied to better understand charge separation and excited state formation in thin films for organic solar cell applications.
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31

Jannah, Maram Mohammed H. "Islamic studies teachers' perceptions of using a blended approach for teaching Islamic education modules in primary schools in Saudi Arabia." Thesis, Durham University, 2018. http://etheses.dur.ac.uk/12598/.

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This study examines Islamic studies teachers’ perception of the effectiveness of using a blended learning approach in teaching Islamic education modules in girls’ primary schools. Furthermore, it investigates participants’ perspectives on whether a blended approach is suitable for teaching all Islamic education modules or if only traditional methods are ideal for teaching some of them. A mixed-methods approach was used for data collection in this study, including qualitative (lesson observations and interviews) and quantitative (online questionnaires) methods. In the data analysis phase, both a thematic analysis and a descriptive statistics analysis including factor analysis using the Statistical Package for the Social Sciences (SPSS) was employed to facilitate the interpretation of quantitative data. The blended approach was thought to be suitable to use in teaching all subjects of the Islamic education curriculum. However, the frequency of using such method depends on the content of the lesson and the subject that teachers want it to teach. Moreover, Islamic studies teachers believed that using a blended learning approach increased their productivity when preparing for their lessons and they believed that such methods helped them to achieve curriculum objectives. On the other hand, as a result of applying a blended approach teachers may face difficulty in completing the given unit in one lesson and teachers may experience difficulty in retaking control of the class, particularly after applying one of the active learning strategies. Also, using too many examples of active learning strategies may distract students. The study also revealed that the key factors which may encourage Islamic studies teachers to use a blended approach include the nature of the curriculum and teachers’ desire and hope of achieving curriculum objectives and the availability of the teaching aids related to each unit in a student’s textbook. Teacher workload, a lack of effective training and a lack of information and communication technology (ICT) tools together with Islamic studies teachers’ fear of undermining the respected status of the academic content were thought to be some of the key obstacles that may prohibit Islamic studies teachers from applying a blended learning approach. This study provides Islamic studies teachers with a blended learning model, along with identification of some of its benefits to both teachers and students. Finally, the blended learning model may be considered a contribution to research in pedagogy, and future researchers may further develop or evaluate the effectiveness of the blended learning model for use in teaching other subjects.
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32

Deranger, Brant. "Blurring the Lines Between Instructor-Led and Online Learning: an Evaluation of an Online Composition Curriculum on the Bleeding Edge." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc3980/.

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The contemporary classroom currently faces an evolving world of computer based training, online courses, instructor-led learning and several blended approaches in-between. With the increased presence of computers and communication in every facet of students' lives, students have changed to adapt to the continuous presence of technology in their daily lives. These recent rapid developments have changed the relationship between technology and communication. Indeed, communication and technology have become linked to such a degree that it is difficult to differentiate one from the other, thereby altering our rhetorical situation as instructors. Instructors can no longer deny the presence of technology in the contemporary classroom, much less in the contemporary composition classroom. This case study serves as a post-modern analysis of the technology based blended classroom. A gap exists between what online learning is (being) today and what it is (becoming) tomorrow. This dissertation explores the gap by examining two rich data sources: online visitor navigational patterns and instructor interviews. The fundamental ideas that this text explores are the following: - Web server logs and PHP logs can be analyzed to yield relevant information that assists in the design, architecture, and administration of online and blended learning courses. - Technology in the writing classroom does not necessarily solve traditional problems associated with the composition classroom. Technology is a tool, not a solution. - Technology has changed the rhetorical situation of the composition classroom. As a result, instructors must adapt to the changed rhetorical environment. Via this study, readers will hopefully gain a better understanding of the relatively unexplored margins between instruction, composition and technology paradigms. Instructors, trainers, technical writers, pedagogues, industry and academia alike must step forward to research technology-assisted pedagogy so that they can de-privilege the paradigms that position technology itself as a solution, and move forward toward realistic and real-world expectations for instructors in technology mediated learning environments.
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33

Baena, Johanna. "PROCESSING AND KINETIC STUDIES OF THE REACTIVE BLENDS OF POLY(VINYL CHLORIDE) AND THERMOPLASTIC POLYURETHANES." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1163727625.

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34

Kummer, Christian, Romy Wolff, Claudia Lieske, and Eric Schoop. "Untersuchung der Wirksamkeit einer Lernhandlung in einem Blended-Learning-Arrangement in der universitären Ausbildung." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-101253.

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1 Unterstützung der Lernhandlung zur Förderung der beruflichen Handlungskompetenz in der universitären Ausbildung Ein Großteil der Hochschulabsolventen ist nach Beendigung des Studiums in Unternehmen tätig. Diese fordern von den Absolventen neben fachlichen Kompetenzen vor allem Methoden- und Sozialkompetenz. Fachspezifische Kompetenzen bilden gemeinsam mit Methoden- und Sozialkompetenzen die Grundlage für die Berufsfähigkeit im Sinne beruflicher Handlungskompetenz der Absolventen. In einer Studie des Institutes der deutschen Wirtschaft Köln aus dem Jahre 2010 gaben rund zwei Drittel der befagten Unternehmen an, dass sie es im Bereich der Fach- und Methodenkompetenzen für sehr wichtig halten, dass die Absolventen in der Lage sind, sich in neue Fachgebiete selbstständig einzuarbeiten und vorhandenes Wissen auf neue Probleme anwenden zu können. Das Vorhandensein speziellen Fachwissens spielt hingegen für die Arbeitgeber eher eine untergeordnete Rolle (Konegen- Grenier, Placke & Stangl, 2011, S. 86 ff.). In einer repräsentativen Befragung unter Studierenden im Jahre 2010 gaben ca. 25 Prozent der Befragten an bisher nicht oder eher nicht gefördert worden zu sein (Heine, Woisch & Ortenburger, 2011, S. 31). Einen entscheidenden Einfluss auf die Kompetenzförderung hat die Lernhandlung. In Anlehnung an Richter (2001, S. 46) werden Lernhandlungen in diesem Aufsatz als zielgerichtete Handlungen angesehen, welche sich auf die bewusste und reflektierte Weiterentwicklung der eigenen Handlungskompetenz (Berufsbefähigung) beziehen. Die Lernhandlung zeichnet sich durch die Merkmale des handlungsorientierten Lernens aus. Handlungsorientiertes Lernen ist gekennzeichnet durch Selbststeuerung, Wahl von Handlungsalternativen und Vollständigkeit, im Sinne von Zielbildung, Planung, Durchführung und Kontrolle. Es ist auf Lernzuwachs und Wissenserwerb ausgerichtet und erfolgt bewusst und reflexiv (Richter, 2001, S. 47). [...]
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35

Vorobyova, Olga. "Fluorescence studies of polymer association in water and droplet coalescence in polymer blend melts." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0018/NQ53685.pdf.

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36

Fok, Ping Sum (Teresa). "Understanding Stage Management in the 21st century in Australia: A Preliminary Survey." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2021. https://ro.ecu.edu.au/theses/2419.

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As a vocation that has been around for at least 150 years, stage management has gone through years of evolution in its scope of practice. From existing as a purely mechanical part of the theatre process to becoming vital co-creators in collaboration with Directors, Designers, and Playwrights, the roles and skills of a Stage Manager has expanded beyond the theatre into the events and entertainment industry that includes large sporting events, rock concerts, and corporate productions. Academic research into Stage Management is presently in its infancy, with a dearth of published literature. This research contributes a timely and critical reflection of what it is to be a Stage Manager in Australia in the 21st century through presenting the findings of an online survey conducted from March to May 2020 by industry professionals. The survey was conducted before the COVID-19 pandemic developed, and therefore the impact of this event is not reflected in the working lives of the participants. However, the research does include a presentation of several approaches to blended learning in Stage Management in response to how the pandemic has affected the teaching of Stage Management during COVID-19. This research showed that although the industry is dynamic and offers secure and consistent employment, there are areas of possible development in education and the management of work-life balance. The survey revealed that industry professionals on reflection would have liked more industry connections and opportunities for internships at an undergraduate level; whilst for mid-career workers, the development of a professional master's degree would be appropriate to cover areas of business management, new technologies, and intensive courses in a second language to further career progression and to open opportunities for the industry to internationalise within the region. 1
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Ko, Chan Uk. "Studies of blends containing liquid crystalline polymers with PET and related investigations of hydroquinone/biphenol polysulfone systems." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/76036.

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The investigation of structure-property behavior of extruded cast films prepared from blends of thermotropic liquid crystalline copolyesters with polyethylene terephthalate (PET). Data were obtained which showed not only the temperature dependence of the moduli and stress-strain behavior but also the orientation effects that must be prevalent in order to explain the differences between the moduli measured parallel and perpendicular to the extrusion direction. Only at high liquid crystal polymer (LCP) compositions is the modulus particularly increased. The modulus enhancement with lower LCP content and utilization of process variables are discussed. Specifically, the extruder gear pump speed did not enhance Young's modulus at the same LCP content as extensively as did the effect of extruder screw speed. Also a study to synthesize and characterize new segmented copolymers that could produce unusual film properties are discussed. The approach involved the synthesis of high Tg (220 C) isotropic poly (aryl ether sulfone) oligomers of varying segment molecular weights. The thermal and mechanical studies of the copolymers have been carried out to probe the potential of these copolymers for signs of liquid crystalline character and to note their ability to thermally crystallize as well as to crystallize by solvent or strain inducement. Along these lines, thermal analysis, polarizing hot-stage microscopy, wide angle x-ray scattering and mechanical testing were utilized in this investigation
Master of Science
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38

Roberge, Timothy Michael. "Novel blends of sulfur-tolerant water-gas shift catalysts for biofuel applications." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4215.

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As traditional sources of energy become depleted, significant research interest has gone into conversion of biomass into renewable fuels. Biomass-derived synthesis gas typically contains concentrations of approximately 30 to 600 ppm H2S in stream. H2S is a catalyst poison which adversely affects downstream processing of hydrogen for gas to liquid plants. The water-gas shift reaction is an integral part of converting CO and steam to H2 and CO2. Currently, all known water-gas shift catalysts deactivate in sulfur concentrations typical of biomass-derived synthesis gas. Novel catalysts are needed to remain active in the presence of sulfur concentrations in order to boost efficiency and mitigate costs. Previous studies have shown molybdenum to be active in concentrations of sulfur greater than 300 ppm. Cobalt has been shown to be active as a spinel in concentrations of sulfur less than 240 ppm. Ceria has received attention as a WGS catalyst due to its oxygen donating properties. These elements were synthesized via Pechini's method into various blends of spinel metal oxide solutions. Initial activity testing at lower steam to gas ratios produced near equilibrium conversions for a Ce-Co spinel which remained active in 500 ppm H2S over a temperature range of 350 °C to 400 °C. The catalysts became poisoned and deactivated in higher concentrations of sulfur. Addition of molybdenum to the Ce-Co base had little effect on sulfur tolerance, but it did lead to a reduction in selectivity for methanation. Surface area increased due to adsorbed H2S, and X-Ray Diffraction confirmed that bulk sulfiding did not occur. Incorporation of Ce and Co into a Fe spinel hindered conversion at lower temperatures and deactivated in higher levels of sulfur.
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39

Bridgman, Corrie. "Biodiversity and the South African wine sector: a successful blend?" Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2789.

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Thesis (MA (Geography and Environmental Studies))--University of Stellenbosch, 2009.
The acceleration of biodiversity loss is understood to threaten the ecosystems upon which life on earth depends. Existing conservation approaches have proved insufficient to stem global biodiversity losses. Mounting evidence indicates that responsible biodiversity conservation requires an integration of ecology with economics. Accordingly, contemporary conservation interventions incorporate a concept that ecosystems and biodiversity can be used and also conserved. In South Africa, such interventions can be appropriately applied in the Cape Floristic Region (CFR), an area containing severely endangered biodiversity where land use and conservation goals rarely mesh. More than 80% of land in the CFR is privately owned, with large tracts transformed for viticulture. Conservation challenges thus include the reconciliation of wine production needs with biodiversity protection necessities. This thesis comprises a case study of the Biodiversity and Wine Initiative, an organisation that simultaneously promotes biodiversity conservation in the South African wine sector, by a process of mainstreaming within an viticultural context. The overall study aim was to improve understanding of the BWI as a mainstreaming initiative. Specifically, the area of inquiry is an investigation into how effectively the BWI has protected biodiversity in the CFR between 2005 and 2008. Individual aims were to investigate reductions in threat to biodiversity in the CFR; to assess farmer adoption levels of BWI strategy; and to formulate a sustainability appraisal of the Biodiversity and Wine Initiative. A strategic triangulation of methods was employed. Stakeholder interviews were conducted to probe adoption levels and opinions of BWI strategy. Case studies of two BWI champion estates provided data on best practice. Towards a critical appraisal of sustainability, an assessment was made of the BWI as a functioning mainstreaming model, which included case studies of two model farms.
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Nilsson, Anna-Lena. "Studies in Swedish sign language reference, real space blending, and interpretation /." Doctoral thesis, Stockholm : Department of Linguistics, Stockholm University, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-37026.

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41

Oghide, Godwin O. "Miscibility studies of poly (methyl acrylate) poly (vinyl acetate) and poly (vinyl acetate)/ poly (vinylidene fluoride) blends using differential scanning calorimetry and fourier transform infra red spectroscopy." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 1985. http://digitalcommons.auctr.edu/dissertations/3294.

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The miscibility of poly (methyl acrylate)/poly (vinyl acetate) (PMA/PVAc) and poly (vinyl acetate)/poly(vinylidene fluoride) (PVAc/PVF2) blends has been studied. Films of compositions 100/0, 80/20, 60/40, 50/50, 40/60, 20/80, and 0/100 (w/w) were cast for each system. Films of PMA/PVAc were found transparent and those of the PVAc/PVf2 were slightly opaque. While all the compositions of the PMA/PVAc exhibit single sharp Tgs, as measured with the differential scanning calorimeter, almost all of those of the PVAc/PVF2 exhibit s1 ng1 e broad TgS. By the single Tg criterion, the PVA/PVAc and PVAc/PVF2 systems are miscible in all proportions. Fourier transform infra-red spectroscopy spectra indicate molecular interaction complex involvement in the two systems. Evidence for such interaction was found to be significant in the 80% PMA/20% PVAc and 20% PVAc/80% PVF2 compositions.
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Benson, Kaitlyn Suzanne. "Assessment of Soil Quality Parameters of Long-Term Biosolids Amended Urban Soils and Dredge Blends." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492601621133386.

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43

Doyle, Adrian. "Using Blender Studios as a Point of Reference to Examine the Intersection of Fine Art and Street Art." Thesis, 2021. https://vuir.vu.edu.au/43499/.

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Blender Studios is a hybrid cultural and commercial hub for Australian street art and fine art, operating both as a collaborative studio space for artists and as a base for a range of collective art endeavours. Utilising ‘Blender Studios’ as a case study, this research is based on the proposition that it has played a pivotal role in establishing a new aesthetic through the rise of street art. The practice-based creative component of the project takes the form of an exhibition and installation. The research period is inclusive of a two-year corporate residency undertaken at The District shopping centre in Melbourne’s Docklands precinct. This corporate residency, and other Blender activities, raise questions such as: Does the radical street artist in a corporate/commercialised structure become, utilising Berlin-based writer Elvia Wilk’s term, like an ‘artist as consultant’? The research undertaken for this project will highlight the paradigms and tensions between notions of both the urban art aesthetic and fine art frameworks. Furthermore, the research will reveal the manner in which cultural activity is sustained and valued through the lens of ‘the Blender’ and provide a potential blueprint for artistic endeavour of the future.
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44

Berriman, Garth. "Morphological studies of organic photovoltaic blends." Thesis, 2015. http://hdl.handle.net/1959.13/1059812.

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Research Doctorate - Doctor of Philosophy (PhD)
The main focus of this thesis has been to develop techniques for probing the active layer morphology of organic photovoltaic devices, as well as to develop a model to explain the phase separation observed in blended film devices containing PCBM. The first chapter describes the use of a near-field scanning optical microscope (NSOM) to generate and map local photocurrents in phase segregated P3HT:PCBM organic photovoltaic devices. Photocurrents are generated at three wavelengths, which are then used to determine the composition of the film based on the absorption coefficient for each wavelength in the pure materials. Then, based on the composition profile (which is corroborated with the use of scanning transmission X-ray microscopy (STXM)), it is shown that the absorption coefficients for the pure materials are insufficient to explain the photocurrent generated by 633 nm light. The difference is attributed to the creation of interface states upon blending of the P3HT and PCBM. The second experimental chapter describes the development of a new characterisation technique based on the near-field scanning photocurrent mapping used in the first chapter. The goal was to develop a technique capable of generating photocurrent maps at multiple wavelengths simultaneously, rather than sequentially. By simultaneously measuring the photocurrent generated by each wavelength, the technique is able to overcome several shortcomings associated with sequentially scanning the device. Two approaches are trialled, the first being a method which involves sequentially exposing the device to each wavelength before moving the probe to the next point in the scan. An electronic shutter system is used to control which wavelength is transmitted through the tip. This simultaneous-sequential multi-wavelength NSPM technique suffered from several technical flaws which prevented routine use of the instrument. The second approach taken to achieve simultaneous photocurrent maps at multiple wavelengths is to use a frequency division multiplexing technique. Each wavelength is modulated, using an optical beam chopper, at a unique frequency which in turn modulates the photocurrent at the optical modulation frequency. The current generated by each wavelength is then obtained by demodulating the photocurrent signal based on the modulation frequencies. The third experimental chapter describes the development of a technique capable of generating composition and thickness maps of thin organic films. The technique works by focussing several wavelengths of light onto a film and measuring the intensity of the transmitted light at each wavelength. The intensity of the transmitted light is used to determine the optical absorption of each wavelength. Each wavelength is modulated at its own unique frequency, allowing the intensity of each wavelength to be recovered using the Welch technique for estimating the periodogram. This frequency division multiplexing technique allows for the simultaneous measurement of multiple wavelengths, and shows a reduction in the variance of the measured light intensity over the technique used in Chapter 4. The instrument is demonstrated on an annealed P3HT:PCBM film, as these results can readily be compared to composition maps generated using scanning transmission X-ray microscopy (STXM). The composition maps compare favourably with the published STXM results and the blend ratio used while the thickness maps are self-consistent and in agreement with the measured film thickness. The final experimental chapter is focussed on gaining an understanding of the PCBM phase which forms upon the thermal annealing of P3HT:PCBM bulk heterojunction devices. A variety of theoretical, experimental and modelling results are combined to create a model which describes the formation of PCBM aggregates. AFM, XRD and SEM are combined to show that the aggregates are actually porous and composed of elliptical nano-crystallites of PCBM and are not a dense single crystal as is sometimes assumed. The diffusion constant of PCBM is measured and used to show that the dominant form of PCBM diffusion within BHJ devices is not molecular diffusion but in fact involves the diffusion of these elliptical nano-crystallites. The nano-crystallite diffusion which takes place in BHJ devices is used to reconcile disparate values for the diffusion constant in the literature. Finally, a basic diffusion model is used to explain the shape of PCBM aggregates.
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Reddy, Prasad A. "Studies In Low Density Polyethylene-Starch Blends." Thesis, 2004. http://etd.iisc.ernet.in/handle/2005/1153.

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46

Teng, Chih-Chun, and 鄧至均. "Studies of Poly (vinyl chloride) and Polyethylene Blended with Micro/Nano Particles." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/02188074778699234299.

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碩士
南台科技大學
化學工程系
92
This study contains three sections. The first section is study of rigid poly (vinyl chloride) compounds blending with clay. The second section is study of rigid poly (vinyl chloride) compounds blending with micro/nano-CaCO3. The third section is study of high density polyethylene blending with micro/nano-CaCO3. In the first section, PVC/clay nanocomposites were successfully prepared by a Haake torque rheomix and examined by XRD and TEM. The fusion properties showed that the fusion time and the fusion temperature were increased, but the fusion torque was decreased, with the content of organic clay was increased. The opposite effect was occurred when the untreated clay was used. From the thermal results, the glass transition temperature of nanocomposite was increased and the thermal stability was decreased. From the mechanical property analyses, it showed that the clay improved the yield strength and elongation of two kinds of PVC/clay nanocomposites. The Young’s modulus of PVC/untreated-clay nanocomposite was increased. On the other hand, the organic clay had the opposite effects due to the organic chemical between the silicate layers and resulted in the Young’s modulus decreasing. In the second section, the fusion properties showed that the loading torque, the loading temperature, and the fusion torque were decreased with the content of calcium carbonate was increased. But the fusion time and fusion percolation threshold were increased with the content of calcium carbonate was increased. The effect of the nano-CaCO3 was more significant than that of the micro-CaCO3. From the thermal properties, Tg and thermal stability of PVC/CaCO3 nanocomposites were increased with the content of nano-CaCO3. The 10phr nano-CaCO3 had the best result. On the other hand, the micro-CaCO3 caused the opposite results. The SEM morphology results showed that CaCO3 were dispersed in the composite and resulted in voids. The PVC/nano-CaCO3 nanocomposites exhibited lightweight and good properties. In the third section, the variation is different kind of CaCO3, the content of CaCO3, and powder or pellet type HDPE. The fusion properties showed that the lower loading torque and the higher fusion time resulting from the HDPE powder. The HDPE/nano-CaCO3 nanocomposites displayed the higher loading torque and the shorter fusion time than those of the HDPE/micro-CaCO3 composites. From the TGA results, it showed the thermal stability of HDPE/nano- or micro- CaCO3 composites were improved, especially for the nano-CaCO3. From the DSC non-isothermal crystallization analysis, the crystallization temperature of HDPE was increased with the content of CaCO3 was increased. It implied the crystallization rate of HDPE was increased. The crystallinity of HDPE was decreased with the content of CaCO3 was increased. The melting point of HDPE was decreased due to its crystallinity was decreased.
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47

Chu, Line-Hwa, and 邱聯華. "Studies on the Rheological Properties for Polymer Blends." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/47509643596796491086.

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博士
國立臺灣大學
材料科學(工程)研究所
82
The aim of this work was to study the rheological properties of both homogeneous and heterogeneous polymer blends. In general, the viscosity of homogeneous polymer blends changes monotonously with composition. In this work, we have modified the concentric multilayer model proposed by Lin to predict the flow behavior of homogeneous polymer blends. There are two types of viscosity- composition curves for heterogeneous polymer blends: For the first type, the viscosity-composition curves were concave upward. There is little interaction between the two phases and both phases are deformed along the direction of flow. Two-phase flow phenomenon is observed. For this type of flow, the modified concentric multilayer model was also used to predict the are deformed along flow behavior. Two parameters regarding the friction force correction and number of layer were introduced in this model and were estimated by curve fitting with the experimental viscosity data. For the second type, the viscosity-composition curves were convex. The viscosity of the dispersed phase is lower than that of the matrix phase, and there is rather strong interaction between the two phases. Then the domain size of the dispersed phase is small and uniform, and the strong interaction plays a role like surfactants, which will diminish most of the strain to the dispersed phase so the deformation of dispersed phase is negligible and the droplets will behave as rigid particles. For this type of flow, we have modified the filler model proposed by Chen et. al. to predict the flow behavior. The viscosity of a polymer blend is influenced by the composition, morphology, miscibility, and interfacial interaction . The correlation of interfacial interaction - miscibility - morphology - free volume of polymer blends was investigated.
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48

Gironda, Linda Ann. "Cross-Cultural Practices of Adult Educators in Blended Global Education." Thesis, 2019. https://doi.org/10.7916/d8-xshj-1347.

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This qualitative study explores how adult educators use a blended teaching format, that is, the use of face-to-face teaching combined with online technology, to promote cross-cultural understanding between students from different cultures. This study is based upon the following assumptions: (1) cross-cultural understanding can be achieved through blended global education; (2) technology and online international education can help students achieve the benefits of cross-cultural understanding; and (3) by promoting cross-cultural understanding, students will learn to challenge assumptions, create new perspectives, gain global competence, and embrace international diversity. This study examines the dedicated work of adult educators who participated in an online international teaching program, to have students from different countries, use technology to collaborate on shared projects in order to foster and promote cross-cultural understanding. The primary sources of data were: in-depth interviews with 20 adult educators, 10 from the United States and 10 from Mexico; a focus group of related academic and university professionals; and documentary analysis. The bounded case study examined, among other things, the adult educators' perceptions of differences in teaching in a face-to-face, online, and blended global format; the activities used within a blended global context to promote understanding among students from different cultures; the ways in which adult educators learned how to teach in this environment; and finally, those factors that facilitated or inhibited the process of cross-cultural understanding within this blended global format. Key findings included the power paradox of synchronicity; the blended cultural diversity paradigm; the impact of international collegial partnerships; and the anxiety and embrace of language challenges. A key finding was that, based upon the level of technology interaction coupled with the academic content of the collaborative work, students can achieve different levels of cross-cultural understanding from awareness to appreciation to advocacy. A primary recommendation from this study is that adult educators and institutions should embrace technology as a creative and innovative way to help students achieve cross-cultural understanding and global competence in today's changing economy.
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Liu, Yi-Hsun, and 劉義峋. "Studies on Compatibility and Biodegradability of PHB/PLA Blends." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/17554675488298979854.

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碩士
淡江大學
化學工程與材料工程學系碩士班
99
Biodegradable polymers have recently attracted great attension because environmental pollution. PLA and PHB is a aliphatic thermoplastic polyester and a biodegradation plastic. In this study, we blended PLA with PHB. We hope it could have a good miscibility and increase the mechanical properties. Then we measure the physical properties and mechanical properties. Finally, we degrade the PHB/PLA blends by streptomyces 76T-1 to investigate the degradability of PHB/PLA blends. Because the miscibility was increased by reduceing the molecular weight of PHB, we blend PLA with PHB by mixer at 180oC for 20 min to obtain the low molecular weight PHB blend with PLA. We could increase the crystallinity of PLA by adding the low molecular weight PHB.The elongation at break was increased from 7% to 226% by blending 20 wt% PHB. We use Streptomyces sp. 76T-1 to degrade PLA and PHB/PLA blends. After degradating test in 72 hour, PLA could be degradating completely. Adding 5 wt% low molecular weight PHB could accelerate the degradating rate, because the low crystallinity of PLA after adding 5 wt% PHB. But adding PHB more then 10 wt% could slow down the degradating rate. After degradating test, we found that the crystallinity was changed by the environment temperature not by degrading of Streptomyces sp. 76T-1. In the other word, the crystallinity have not changing in the degrade behavior.
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WU, WEN-CHAO, and 吳文超. "The studies of the properties of polypropylene (PP) blends." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/88036956525897418534.

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