44,196 research outputs found
Modulation of molecular mobility in sucrose-based amorphous solids detected by phosphorescence of erythrosin B
No full textThis project studied the temperature and composition dependence of molecular mobility in amorphous sucrose. Phosphorescence of erythrosin B provided parameters sensitive to localized molecular mobility in the glass and to more global modes of mobility activated at the glass transition and provided evidence of dynamic site heterogeneity in amorphous sucrose solids. In sucrose-based binary matrices, plasticizer (glycerol), salts (NaCl, CaCl2, MgCl2, Na-citrate, Na-acetate, Na-phosphates), maltodextrins (DE 5 to 18), protein (gelatin), and polysaccharides (xanthan and high amylose starch) were selected to investigate how variations in nature and content of each additive influence the molecular mobility as well as dynamic site heterogeneity in amorphous sucrose matrix.
Measurements of phosphorescence intensity, lifetime, and emission energy were made in amorphous sucrose-additive films containing the probe erythrosin B. Results showed the complex effects of additives on the mobility in a hydrogen-bonded sugar matrix. Glycerol exhibited an antiplasticization effect shown as decreased mobility at glycerol/sucrose mole ratio ≤ 0.27 and at temperature ≤ 45° C. On the contrary, all the polymers studied, including gelatin, xanthan and high amylose starch, displayed a ‘plasticization’ effect (increasing mobility) at very low while a rigidification effect (decreasing mobility) at higher concentration without significant change in Tg. Maltodextrins, mixtures of molecules with a variety of molecular weights, increase the mobility in spite of their high Tg. Sodium chloride showed a strong rigidification effect on the sucrose matrix; however, this effect was weakened at mole ratio NaCl/sucrose above 0.5. Other salts showed effects resulting from a compromise between two opposite actions (decreasing mobility due to salt itself and increasing mobility due to absorbed moisture). All above behaviors are difficult to interpret using Tg alone. Molecular mobility appears to be more accurate to evaluate the physical stability of the matrix.
Phosphorescence of erythrosin B was also able to report dynamic site heterogeneity that is an intrinsic property of the amorphous solid state. The heterogeneity was be evaluated by the variation of lifetime and lifetime heterogeneity across the excitation and emission band and the temperature dependence of bandwidth and lifetime heterogeneity. The composition influence on the dynamic site heterogeneity was discussed as well.Ph.D.Includes bibliographical references
Yumin of Thembang
No full textA collection of recordings from the annual propitiation rite by yumin Namje at Thembang village, Thembang circle, West Kameng district, Arunachal Pradesh India, recorded on April 29th, 2013 at his residence. The language spoken in Thembang is a variety of Dirang Tshangla. The yumin originally comes from Jerigaon village and settled in Thembang village, where he got married to a local woman. He continues to propitiate an impressive assembly of deities from various parts of the Himalayas, including as far away as western Bhutan, and including local deities of the Monpa, the Sartangpa, and the Miji. In addition, since he is a yumin, the local deities enter him and take possession of him turn by turn. The propitiation is in a curious mixture of Tibetan and local languages.
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Tim Bodt: bodttim (at) gmail (dot) co
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
Why you don't need to write much to be the world's bestselling author
No full textAn account of my use of stylometry to analyse the works of James Patterson, written for a public audience
Checking recognition: do you remember and do you know in talk-in-interaction
No full textThis dissertation examines how speakers check recognition of knowledge and memory they presume to be shared by their co-participants. In this conversation analytic study, I analyze recognition checks with (do you) remember (Chapter 3), (do) you know (Chapter 4) in American English and German everyday conversation, and in English classroom interaction, specifically, in teacher talk (Chapter 5). Independent of their sequential position or their position within a turn, do you remember and do you know in both English and German are expansions of talk that help to structure sequences and turns to avoid problems of intersubjectivity (Auer, 1984; Schegloff et al., 1977) and to establish common ground among participants.
Chapter 1 introduces the topic of this study. Chapter 2 reviews the notions reference, knowledge and memory and describes the major characteristics of spoken German and teacher talk. Chapter 3 investigates English and German do you remember recognition checks in everyday conversation. I show how speakers back up their claims or (counter-)challenge their coparticipant with do you remember using memory that is assumed to be in the knowledge domain of the recipient (Antaki & Leudar, 1990; Golato, 2012). Chapter 4 explores English and German do you know constructions in everyday interaction. For both English and German do you know constructions, speakers initiate topic shifts and pursue a response after no or insufficient uptake from the participants (Bolden et al., 2012). Chapter 5 examines do you remember and do you know as employed in teacher talk. While do you remember organizes classroom talk by giving step-by-step information or connecting old with new information, do you know either self-repairs teacher talk by reformulating or making a previous teacher question more specific. Chapter 6 summarizes the major findings of this dissertation focusing on a comparison of the two constructions under investigation. It also discusses the limitations of this study and the avenues of future research. This dissertation addresses issues relevant to the field of conversation analysis, pedagogy, second language acquisition research, linguistics, cognitive science and sociology.Item withdrawn by Laura Spradlin ([email protected]) on 2014-10-16T19:15:41Z
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University of Illinois Theses & Dissertations (ID: 1)
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You Know What You Write, But Do You Know Your Rights? Understanding and Protecting Your Rights As an Author
No full textWhen you publish a journal article, you sign a copyright or licensing agreement. Do you know what you’re agreeing to when you sign it?
Different journals have different policies: Some journals require you to relinquish your copyright. (You then have to ask permission or even pay to share your article with students and colleagues!) Some journals allow you to retain some rights (e.g., the right to post online). Some journals leave copyright in your hands. (You simply give the journal a non-exclusive license to publish the article.)
How can you find out a journal’s policy? How can you negotiate your contract to make the most of your rights as a scholar, researcher, and author? This presentation covers how you can protect your rights to reproduce, distribute, and display the work you create
What You Show is What You Get!: Gestures for Microtask Crowdsourcing
No full textCrowdsourcing is a valuable tool to gather human input which enables the development of reliable artificial intelligence systems. Microtask platforms like Prolific and Amazon's Mechanical Turk have flourished by creating environments where crowd workers can provide such human input in a diverse and representative manner. Such marketplaces have evolved to support several hundreds of workers in earning their primary livelihood through crowd work. Crowd workers, however, often perform these tasks in sub-optimal work environments with poor ergonomics. Additionally, many of the various microtasks require input via the standard method of a mouse and keyboard and are repetitive in nature. As such, crowd workers who primarily earn their livelihoods in microtask marketplaces are at risk of injuries such as carpal tunnel syndrome. By changing the input modality from a mouse and keyboard to gesture-driven input, crowd workers can complete their work while simultaneously improving or safeguarding their physical health. Through three distinct microtasks, we constructed a dataset that enables the exploration of the physical and mental health of crowd workers while using gestures. In this work, we present the process of constructing this dataset, how we applied it, and the future applications we foresee. Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Web Information System
Adaptive neural sliding mode control for heterogeneous ship formation keeping considering uncertain dynamics and disturbances
No full textThis paper investigates the formation keeping problem of heterogeneous ships with underactuated inputs, uncertain dynamics, and environmental disturbances. The control objective is to make the heterogeneous followers keep the desired formation while tracking a leader. To solve the problem effectively, a novel virtual leader–follower formation scheme considering the ship heterogeneity is proposed by utilizing the backstepping method, adaptive neural network, and adaptive control law. The stability of the formation control system is proved based on Lyapunov's direct method where all tracking errors are guaranteed to be uniformly ultimately bounded. Finally, simulations and comparisons are conducted to verify the effectiveness of the proposed control law.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Transport Engineering and Logistic
Can I touch you online?: Reshaping Touch Communication: An Interdisciplinary Research Agenda.
No full textThis paper introduces art and research on disrupted, touch in networked environments in which realities merge. Aesthetic sensory disruption and haptic distribution are purposefully designed for reflection, in a new type of ‘dialogue space’. The effects of embodied cognition, with respect to trust and experience, are explored in Artistic Social Labs (ASLs) designed to this purpose. Two ASLs are described in this paper.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.System Engineerin
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