cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High-rate amorphous SnO2 nanomembrane anodes for Li-ion batteries with a long cycling life
Creators: name: Liu, Xianghong
name: Zhang, Jun
name: Si, Wenping
name: Xi, Lixia
name: Oswald, Steffen
name: Yan, Chenglin
name: Schmidt, Oliver G.
Publisher: name: Cambridge : RSC Publ.
Year: 2014
Subjects: subject: Anodes
subject: Electric batteries
subject: Lithium alloys
subject: Lithium compounds
subject: Nanostructures
subject: 600

description: Amorphous SnO2 nanomembranes as anodes for lithium ion batteries demonstrate a long cycling life of 1000 cycles at 1600 mA g−1 with a high reversible capacity of 854 mA h g−1 and high rate capability up to 40 A g−1. The superior performance is because of the structural features of the amorphous SnO2 nanomembranes. The nanoscale thickness provides considerably reduced diffusion paths for Li+. The amorphous structure can accommodate the strain of lithiation/delithiation, especially during the initial lithiation. More importantly, the mechanical feature of deformation can buffer the strain of repeated lithiation/delithiation, thus putting off pulverization. In addition, the two-dimensional transport pathways in between nanomembranes make the pseudo-capacitance more prominent. The encouraging results demonstrate the significant potential of nanomembranes for high power batteries.
Scientific analysis of Thalassia testudinum leaves
Creators: name: Wilson, Nathan Gauntlett
name: 0000-0003-4200-4790
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Seagrass
Microscopy

description: Seagrass meadows are an important element of coastal ecosystems and they perform numerous environmental functions. Because of their importance, the ability to properly monitor the health of the seagrass meadows is imperative. Seagrass can greatly affect acoustic propagation and therefore acoustics can be used for remotely sensing the health of the meadow. To do so, an accurate model of sound propagation within seagrass is required. Knowledge of the volume of gas contained within seagrass leaves is a requisite part of the process. The first two chapters of this report describe the microscopic imaging, and image analysis, of seagrass leaves that were used in associated laboratory acoustic measurements. The last chapter of this report describes the preparation of an acoustic measurement apparatus, a one-dimensional resonator tube, that was used to measure the effective sound speed of seagrass tissue in water. The results themselves and discussion of the measurements are outside the scope of the present report but citations that direct the reader to those results are provided.
Stakeholders' perceptions of the language needs of diploma in ICT students in a Malaysian polytechnic: a case study
Creators: name: Ahmad Zainuddin, Shahiza
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in a total fulfilment of the requirements for the degree of Doctor of Philosophy to the Faculty of Education (Bundoora), La Trobe University, Victoria.
First Passage Time Densities through Hölder curves
Creators: name: Lee, Jimyeong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We prove that for a standard Brownian motion, there exists a first-passage-time density function through a locally Hölder continuous curve with exponent greater than 1/2. By using a property of local time of a standard Brownian motion and the theories of partial differential equations in Cannon [2], we find a sufficient condition for existence of the density function. We also show that this density function is proportional to the space derivative of the Green function of the heat equation with Dirichlet boundary condition at the moving boundary.
description: 14 pages, ALEA - Latin American Journal of Probability and Mathematical Statistics (2018)
Total arsenic and arsenic speciation in indigenous food stuffs
Creators: name: Sadee, Bashdar
Publisher: name: Plymouth University
Year: 2016
Subjects: Arsenic speciation in food stuffs

description: The properties of an element are highly dependent on its chemical form, it’s called elemental speciation. This study evaluates the arsenic species found in a range of food stuffs together with growing environments and toxicity issues. Total arsenic concentrations in fish tissue and vegetable crops were determined by ICP-MS following microwave-assisted acid digestion using nitric acid/hydrogen peroxide, trypsin and cellulase enzymatic extraction procedures. The extracted arsenic species were then quantified using HPLC-ICP-MS. A dilute nitric acid (1 % (v/v)) digestion procedure was also used to extract arsenic species from rice and the different parts (root, skin, stem, leaf and grain) of a range of plant crops. The study was extended to include the aqua-regia extractable arsenic content of the soils collected from the area where the plants had been cultivated in the Kurdistan region of Iraq. Irrigation water was also investigated, but found to contain low levels of arsenic. An anion-exchange HPLC-ICP-MS method was developed, using sulphate and phosphate, for the separation and quantification of AsB, MMA, DMA, InAsIII and InAsV. The results obtained for fish samples were in the range of 3.53-98.80 µg g-1 (dry weight) with non-toxic AsB being the predominant species. The InAsV concentration was in the range of 0.1-1.19 µg g-1 for all fish species except for the John Dory which was below the limit of detection (0.027 µg g-1). Total arsenic, arsenic species, and total multi-elements (including Ag, Al, B, Ba, Be, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Sb, Se, Si, Ti, V and Zn) were determined in rice samples from Kurdistan, Iraq and other regions of geographical origin. The transport of arsenic from the soil and irrigation water into roots, stem, leaf and subsequently into the grain or bean of the plants is important when assessing the potential health risks from food crops. For the soil sample, InAsV was found to be the major species with smaller quantities of InAsIII . After applying a full BCR sequential extraction procedure to the soils, it was found that 7.87 - 21.14 % of the total arsenic was present in an easily acid-soluble extractable form. Finally, a novel method was developed to measure total arsenic and arsenic species associated with vegetative DNA. In rice plant, it was found that InAsV incorporated within the DNA molecule in which it could replace phosphate. It was also found that the concentration of InAsV associated with DNA molecule decreased with decreasing total arsenic in the rice plant from the root to the leaf.
(201423) Samuel Ridley
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
The Church lands and peasant unrest : a study of agrarian conflict in 20th century Luzon
Creators: name: Connolly, Michael Joseph
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
Redox and pH dual-stimuli responsive wormlike micelles based on CTAB and sodium dithiodibenzoate
Creators: name: Zhang, Jianxin
name: Xu, Qianqian
name: Jiang, Jianzhong
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Space Science
subject: Pharmacology
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
classificationCode: 111714
subject: Mental Health

description: Stimulus-responsive wormlike micelles (WLMs) have attracted much attention in the past decade. In this work, dual-stimuli (pH and redox reaction) responsive WLMs were prepared with sodium 2,2′-dithiodibenzoate (DTSA) and cetyltrimethylammonium bromide (CTAB). The WLMs can be reversibly switched on and off by an alternating redox reaction originating from the cleavage and reformation of the disulfide bonds in DTSA. Moreover, the WLMs can also respond to pH stimulus. The corresponding responsive behaviors of WLMs were revealed using rheometer, cryogenic transmission electron microscopy, and 1H NMR analyses. The multi-stimuli responsive behavior makes the current system a good candidate for smart control of the sol-gel transition.
Probabilistic Resource Analysis by Program Transformation
Creators: name: Kirkeby, Maja H.
name: Rosendahl, Mads
Publisher: name: arXiv
Year: 2016
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: The aim of a probabilistic resource analysis is to derive a probability distribution of possible resource usage for a program from a probability distribution of its input. We present an automated multi- phase rewriting based method to analyze programs written in a subset of C. It generates a probability distribution of the resource usage as a possibly uncomputable expression and then transforms it into a closed form expression using over-approximations. We present the technique, outline the implementation and show results from experiments with the system.
Surface- and tip-enhanced Raman spectroscopy reveals spin-waves in iron oxide nanoparticles
Creators: name: Rodriguez, Raul D.
name: Sheremet, Evgeniya
name: Deckert-Gaudig, Tanja
name: Chaneac, Corinne
name: Hietschold, Michael
name: Deckert, Volker
name: Zahn, Dietrich R. T.
Publisher: name: Cambridge : RSC Publ.
Year: 2015
Subjects: subject: Electric fields
subject: Electromagnetic fields
subject: Iron metallography
subject: Magnetic nanoparticles
subject: Metal nanoparticles
subject: 600

description: Nanomaterials have the remarkable characteristic of displaying physical properties different from their bulk counterparts. An additional degree of complexity and functionality arises when oxide nanoparticles interact with metallic nanostructures. In this context the Raman spectra due to plasmonic enhancement of iron oxide nanocrystals are here reported showing the activation of spin-waves. Iron oxide nanoparticles on gold and silver tips are found to display a band around 1584 cm−1 attributed to a spin-wave magnon mode. This magnon mode is not observed for nanoparticles deposited on silicon (111) or on glass substrates. Metal–nanoparticle interaction and the strongly localized electromagnetic field contribute to the appearance of this mode. The localized excitation that generates this mode is confirmed by tip-enhanced Raman spectroscopy (TERS). The appearance of the spin-waves only when the TERS tip is in close proximity to a nanocrystal edge suggests that the coupling of a localized plasmon with spin-waves arises due to broken symmetry at the nanoparticle border and the additional electric field confinement. Beyond phonon confinement effects previously reported in similar systems, this work offers significant insights on the plasmon-assisted generation and detection of spin-waves optically induced.
Non-trivial wandering domains for heterodimensional cycles
Creators: name: Kiriki, Shin
name: Nakano, Yushi
name: Soma, Teruhiko
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: Primary 37G25, 37C20, 37C29, Secondary 37C70

description: We present a sufficient condition for three-dimensional diffeomorphisms having heterodimensional cycles to be approximated arbitrarily well by diffeomorphisms with non-trivial contracting wandering domains via several perturbations. The key idea is to show that diffeomorphisms with heterodimensional cycles associated with saddle points with non-real eigenvalues can be approximated by diffeomorphisms with generalized homoclinic tangencies presented by Tatjer. The generalized homoclinic tangency is an organizing center including a Bogdanov-Takens bifurcation, by which one can obtain non-trivial contracting wandering domains together with a Denjoy-like construction.
The emergence of urban Victoria, 1834-91
Creators: name: Cloher, Dorothy Urlich
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
(201419) Mary Ann Cuff
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(201420) Mary Ann Elizabeth Ridley
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Understanding young people’s romantic relationships and sexual practices in the social context of Kathmandu, Nepal: implications for HIV prevention
Creators: name: Dhital, Deepa
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the Australian Research Centre in Sex, Health and Society, Faculty of Health Science, La Trobe University, Bundoora.

Youth culture, romantic relationships, dating, and sexual practices are uncharted territory in the social science literature on Nepal, most discussing sexual taboo. Such studies imply that young people are sexually repressed by traditional norms in a conservative society. Moving away from this assumption, which pervades international HIV prevention discourse, this study intends to examine the values, rationalities, behaviours and practices that structure young people’s understanding of their romantic relationships and sexual practices in their everyday lives. This study involves thematic analysis of forty-one interviews and four focus-group discussions with 16–20-year-old students in both private and government schools in Kathmandu in 2008. The data demonstrate that young people are using the idea of ‘modernity’ to legitimise their romantic relationships and sexual activities, although not many of them are actually sexually active. I argue that young people find a balance between modern and traditional values in the interpretation of self. Young people’s increasing access to a sexualised environment in Kathmandu and exposure to the media have put premarital relationships, dating practices and sex foremost in their minds. Even so, these have not become a priority in everyday life. The main finding in this study is that premarital relationships and sex are not casual affairs for young people, but tools through which they negotiate gender roles, freedom and a sense of self in order to become modern. They approach romantic relationships with caution, creatively justifying their behaviour while not necessarily defying family and social values. More than the repression of sexual desires, young people have multiple methods of making sense of existing sexual morals, developing new understandings and appropriating them into their lives with awareness. Young people’s constant negotiation of values that delay sexual initiation is as much about coping in an emerging new culture as it is about liberation from restrictive values. The empirical findings of this study in Nepal are important for culturally relevant HIV-prevention work among young people.
Direct Measurement of the Josephson Supercurrent in an Ultrasmall Josephson Junction
Creators: name: Cottet, A.
name: Devoret, M. H.
name: Esteve, D.
name: Joyez, P.
name: Steinbach, A.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
An application of TQFT to modular representation theory
Creators: name: Gilmer, Patrick M.
name: Masbaum, Gregor
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: For p>3 a prime, and g>2 an integer, we use Topological Quantum Field Theory (TQFT) to study a family of p-1 highest weight modules L_p(lambda) for the symplectic group Sp(2g,K) where K is an algebraically closed field of characteristic p. This permits explicit formulae for the dimension and the formal character of L_p(lambda) for these highest weights.
description: 24 pages, 3 figures. v2: Lemma 3.1 and Appendix A added
The aesthetic alienation of nature in Werner Herzog's cinema and the realist phenomenology of Siegfried Kracauer
Creators: name: Wils, Tyson
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Communication, Arts and Critical Enquiry, Faculty of Humanities and Social Sciences, La Trobe University, Bundoora.
Expectations about childbirth : the relationship between expectations, childbirth education, and birth satisfaction
Creators: name: Clark, N.J.
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
(201417) William Carless
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Cardy Formula for 4d SUSY Theories and Localization
Creators: name: Di Pietro, Lorenzo
name: Honda, Masazumi
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study 4d $\mathcal{N}=1$ supersymmetric theories on a compact Euclidean manifold of the form $S^1 \times\mathcal{M}_3$. Partition functions of gauge theories on this background can be computed using localization, and explicit formulas have been derived for different choices of the compact manifold $\mathcal{M}_3$. Taking the limit of shrinking $S^1$, we present a general formula for the limit of the localization integrand, derived by simple effective theory considerations, generalizing the result of arXiv:1512.03376. The limit is given in terms of an effective potential for the holonomies around the $S^1$, whose minima determine the asymptotic behavior of the partition function. If the potential is minimized in the origin, where it vanishes, the partition function has a Cardy-like behavior fixed by $\mathrm{Tr}(R)$, while a nontrivial minimum gives a shift in the coefficient. In all the examples that we consider, the origin is a minimum if $\mathrm{Tr}(R) \leq 0$.
description: 43 pages, v2: references added, changed slightly discussion in section 5
Averaged Lemaître-Tolman-Bondi dynamics
Creators: name: Isidro, Eddy G. Chirinos
name: Barbosa, Rodrigo M.
name: Piattella, Oliver F.
name: Zimdahl, Winfried
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider cosmological backreaction effects in Buchert's averaging formalism on the basis of an explicit solution of the Lemaître-Tolman-Bondi (LTB) dynamics which is linear in the LTB curvature parameter and has an inhomogeneous bang time. The volume Hubble rate is found in terms of the volume scale factor which represents a derivation of the simplest phenomenological solution of Buchert's equations in which the fractional densities corresponding to average curvature and kinematic backreaction are explicitly determined by the parameters of the underlying LTB solution at the boundary of the averaging volume. This configuration represents an exactly solvable toy model but it does not adequately describe our "real" Universe.
description: 26 pages, 2 figures, comments and references added, to appear in Class. Quantum Grav
Talking difference, thinking practice : matters of difference in feminist theory and political practice
Creators: name: Charman, Amanda Louise
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
Complex study of acid-in-oil emulsions, their formation, stabilization and breakdown
Creators: name: Silin, Mikhail A.
name: Magadova, Lyubov A.
name: Davletshina, Lyutsia F.
name: Yunusov, Timur I.
name: Merzlyakov, Konstantin K.
name: Kotekhova, Viktoria D.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Cancer
classificationCode: 110309
subject: Infectious Diseases
subject: FOS: Health sciences

description: Different problems may occur during acid treatment of oil reservoirs because of the incompatibility of acid with rocks and fluids. One of the issues is the formation of acid-in-oil emulsions, which block pore throats and hinder acid removal. The standard “bottle-test” method does not fully characterize such emulsions and allows only quick reagent selection. This article presents a new methodology that enables the evaluation of emulsion formation and the possible risk for acid treatment. This methodology includes visual control and measurement of viscosity, interfacial tension, and voltage stability. We found that HCl-based emulsions are generally more viscous, finer, and stable, but the high strength of the acid may lead to emulsion breakdown. We also established that emulsions that are stable under static conditions may break down after applying mechanical stress, which is a characteristic of sulfamic acid-based emulsions. Although it may not be possible to separate emulsions visually, a water content gradient may be observed in an emulsion column. Our results demonstrate that the acid and oil parameters are interconnected in emulsion formation issues. This methodology and the obtained results may be applied for quick and proper reagent selection for better acid treatment results.
Measuring out-of-time-order correlators on a nuclear magnetic resonance quantum simulator
Creators: name: Li, Jun
name: Fan, Ruihua
name: Wang, Hengyan
name: Ye, Bingtian
name: Zeng, Bei
name: Zhai, Hui
name: Peng, Xinhua
name: Du, Jiangfeng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The idea of the out-of-time-order correlator (OTOC) has recently emerged in the study of both condensed matter systems and gravitational systems. It not only plays a key role in investigating the holographic duality between a strongly interacting quantum system and a gravitational system, but also diagnoses the chaotic behavior of many-body quantum systems and characterizes the information scrambling. Based on the OTOCs, three different concepts -- quantum chaos, holographic duality, and information scrambling -- are found to be intimately related to each other. Despite of its theoretical importance, the experimental measurement of the OTOC is quite challenging and so far there is no experimental measurement of the OTOC for local operators. Here we report the measurement of OTOCs of local operators for an Ising spin chain on a nuclear magnetic resonance quantum simulator. We observe that the OTOC behaves differently in the integrable and non-integrable cases. Based on the recent discovered relationship between OTOCs and the growth of entanglement entropy in the many-body system, we extract the entanglement entropy from the measured OTOCs, which clearly shows that the information entropy oscillates in time for integrable models and scrambles for non-intgrable models. With the measured OTOCs, we also obtain the experimental result of the butterfly velocity, which measures the speed of correlation propagation. Our experiment paves a way for experimentally studying quantum chaos, holographic duality, and information scrambling in many-body quantum systems with quantum simulators.
Ambiguity in Euripidean drama : identity, role, theatrical conventions
Creators: name: Chant, Dale
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
Evidence for Two Superconducting Energy Gaps in MgB2 by Point-Contact Spectroscopy
Creators: name: Kacmarcík, J.
name: Klein, T.
name: Marcus, J.
name: Samuely, P.
name: Szabó, P.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Generic Construction of Efficient Matrix Product Operators
Creators: name: Hubig, C.
name: McCulloch, I. P.
name: Schollwöck, U.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Matrix Product Operators (MPOs) are at the heart of the second-generation Density Matrix Renormalisation Group (DMRG) algorithm formulated in Matrix Product State language. We first summarise the widely known facts on MPO arithmetic and representations of single-site operators. Second, we introduce three compression methods (Rescaled SVD, Deparallelisation and Delinearisation) for MPOs and show that it is possible to construct efficient representations of arbitrary operators using MPO arithmetic and compression. As examples, we construct powers of a short-ranged spin-chain Hamiltonian, a complicated Hamiltonian of a two-dimensional system and, as proof of principle, the long-range four-body Hamiltonian from quantum chemistry.
description: 13 pages, 10 figures
THE IMPACT OF DEREGULATION ON THE PERCEPTIONS OF URBAN PUBLIC TRANSPORT USERS
Creators: name: Green, Alison Jane
Publisher: name: University of Plymouth
Year: 1989

description: The deregulation of stage carriage bus services represented a major change in the structure and operation of the bus industry in the U.K. Therefore, there existed a need to monitor the effects of the changes brought about by deregulation on the travelling public. Although, many research projects were set up to monitor deregulation, the paucity of attitudinal research meant that this project fills an important gap in the monitoring process. Plymouth was chosen because it had a fairly typical municipal bus operator, and one other major operator. In addition, no other research establishment was doing any detailed research in the South West. Four geographical areas within Plymouth were selected, in order to provide an in-depth analysis and comparative study between different types of users and different levels of bus service provision. Two large scale postal surveys were conducted, one nine months before deregulation and one three months after. As a result of the findings from these surveys, a panel of respondents was set up who were interviewed three times, at four monthly intervals. An attempt was made to link the findings obtained in the factor analysis from the first postal surveys to the in-depth analysis in the panel surveys. The panel surveys used the Fishbein Expectancy Value Model as a theoretical base because it is designed on the hypothesis that people integrate large numbers of pieces of information to arrive at an overall judgement. This ties in well with the findings of the postal surveys. In addition, the Fishbein model permits respondents to make a judgement about the bus service based on factors which are important to them, rather than on a prescribed list of attributes. The extension of the general postal surveys to the examination of individual perceptions is seen as an important aspect of the study.
(201415) Isabella Warde
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Second Harmonic Generation in the Centrosymmetric Antiferromagnet NiO
Creators: name: Fiebig, M.
name: Fröhlich, D.
name: Lottermoser, Th.
name: Pavlov, V. V.
name: Pisarev, R. V.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
O1/W/O2 nanoemulsions and emulsions based on extra virgin olive oil produced by ultrasound-assisted homogenization process: Characterization of structure, physical and encapsulation efficiency
Creators: name: Katsouli, Maria
name: Tzia, Constantina
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Oil-in-water-in-oil (O1/W/O2) emulsions and nanoemulsions based on extra virgin olive oil were produced combining high-speed and ultrasonic homogenizer. Droplet size distribution, encapsulation efficiency, kinetic stability, and their structure were studied as a function of homogenization time, dispersed volume fraction, emulsifier type, and composition of the inner O1/W nanoemulsion. The ultrasonic-assisted homogenization was beneficial for the formation of O1/W/O2 nanoemulsion, as the intensity of the ultrasound did not destroy the double structure. The inner O1/W nanoemulsion with the lowest droplet size, surface tension, and viscosity resulted in double nanoemulsion with the minimum droplet size (432 ± 5 nm). Increasing the dispersed volume fraction resulted in higher particle size, gravitational separation, and high oiling off values. The DSC thermograms showed samples with the low droplet size presented also low encapsulation yield. The microscopic analysis demonstrated that all O1/W/O2 samples showed similar structures with distinctly visible phases and spherical aqueous droplets with a broad distribution.
Amenability of coarse spaces and K-algebras
Creators: name: Ara, Pere
name: Li, Kang
name: Lledó, Fernando
name: Wu, Jianchao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Rings and Algebras (math.RA)
subject: Metric Geometry (math.MG)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 16P90, 43A07, 37A15, 20F65, 16S99

description: In this article we analyze the notions of amenability and paradoxical decomposition from an algebraic perspective. We consider this dichotomy for locally finite extended metric spaces and for general algebras over commutative fields. In the context of algebras we also study the relation of amenability with proper infiniteness. We apply our general analysis to two important classes of algebras: the unital Leavitt path algebras and the translation algebras on locally finite extended metric spaces. In particular, we show that the amenability of a metric space is equivalent to the algebraic amenability of the corresponding translation algebra.
description: final version; typos corrected; references updates; 38 pages
Decoding the functional reorganization of the aging brain
Creators: name: Gölz, Christian Johannes
Publisher: name: Universität Paderborn
Year: 2024

description: Ziel dieser Dissertation war die Erweiterung des Verständnisses altersbedingter funktioneller Hirnreorganisation durch Anwendung maschinellen Lernens auf die Elektroenzephalographie (EEG). Basierend auf EEG-Daten, die während sensorischer, kognitiver oder motorischer Aufgaben abgeleitet wurden, wurden Klassifikationsalgorithmen trainiert, die die jeweilige ausgeführte Aufgabe sowie die individuelle Alters- und Lebensstilgruppe vorhersagen. Dimensionsreduktionstechniken wurden eingesetzt, um EEG-Muster zu extrahieren, die den Zusammenhang zwischen altersbedingter Hirnreorganisation und Lebensstilfaktoren aufzeigen. Die Performanz der Klassifikatoren offenbarte aufgabenspezifische Signaturen der Dedifferenzierung, d.h. des Verlusts der Spezialisierung neuraler Systeme. Zudem gaben die Ergebnisse Hinweise auf kognitive Veränderungen in bestimmten Lebensphasen, z.B. nach Renteneintritt, und den Einfluss von Lebensstilfaktoren. Eine hohe kardiorespiratorische Fitness war mit einer geringeren Dedifferenzierung verbunden und berufliche Expertise führte zu einer stärkeren Individualisierung funktioneller Hirnaktivierungsmuster. Maschinelles Lernen ermöglichte die Identifikation und Quantifizierung altersbedingter Veränderungen des Gehirns. Dadurch wurden bestehende Erkenntnisse gestützt und darüber hinaus neue Hypothesen aufgestellt. Diese Ergebnisse könnten zur Entwicklung von Diagnoseinstrumenten, Therapien oder technischen Assistenzsystemen beitragen.
description: This dissertation aimed to extend the understanding of age-related functional brain reorganization by applying machine learning to electroencephalography (EEG) data. Based on EEG data derived during sensory, cognitive, or motor tasks, classification algorithms were trained to predict the task performed during recording and the individuals age and lifestyle group. Dimensionality reduction techniques were used to extract EEG patterns that reveal the relationship between age-related brain reorganization and lifestyle factors. The performance of the classifiers revealed task-specific signatures of dedifferentiation, i.e., loss of specialization of neural systems. In addition, the results provided evidence for cognitive changes at specific life stages, e.g., after retirement, and the influence of lifestyle factors. High cardiorespiratory fitness was associated with less dedifferentiation, and occupational expertise led to greater individualization of functional brain activity patterns. Machine learning enabled the identification and quantification of age-related brain reorganization. This supported existing findings and, in addition, generated new hypotheses. These results could contribute to developing diagnostic tools, therapies, or assistive technologies.
Detecting essential surfaces as intersections in the character variety
Creators: name: Chu, Michelle
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geometric Topology (math.GT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We describe a family of hyperbolic knots whose character variety contain exactly two distinct components of characters of irreducible representations. The intersection points between the components carry rich topological information. In particular, these points are non-integral and detect the Seifert surface.
description: v2: 17 pages, 4 figures. Corrected an error and added Lemma 4.4
Low-temperature NOx-hydrocarbon interactions at elevated pressure probed with synchrotron double imaging photoelectron photoion coincidence spectroscopy
Creators: name: Höner, Martin
Publisher: name: Universität Paderborn
Year: 2023

description: Ziel dieser Forschungsarbeit war es die Reaktionen zwischen Kohlenwasserstoffen und Stickoxiden in Verbrennungsprozessen unter erhöhtem Druck zu untersuchen. Dazu wurden Reaktionsgemische von Methan mit NO mithilfe von bildgebender Photoionen-Photoelektronen Koinzidenz Spektroskopie untersucht. Besonderes Augenmerk wurde auf die salpetrige Säure gelegt. In den Experimenten war kein HNO2 detektierbar ob-wohl theoretische Reaktionsgeschwindigkeiten auf das Gegenteil hindeuten. Es wurde gezeigt, dass HNO2 detektierbar sein sollte, da das Kation nahe der Ionisationsenergie keine Dissoziation unterläuft. Im Gegensatz dazu wurde festgestellt, dass das cis-HONO Isomer bei der Ionisierung bei Energien nahe seiner adiabatischen Schwelle dissoziiert. Dieser Umstand macht den Nachweis dieser Spezies mit Photoionisationsmethoden unmöglich. Ebenfalls wurde nachgewiesen, dass das trans-HONO Isomer in ausrei-chenden Konzentrationen entsteht, um detektiert zu werden. Ein steiler Abfall der Übergangsintensitäten bei höheren Photonenenergien im Schwellenphotoelektronen-spektrum deutet jedoch auf dissoziative Ionisation hin, was durch den Einsatz von Elektronenstrukturmethoden bewiesen wurde.
description: The research objective of this work was to understand the interactions of hydrocarbon fuels with oxides of nitrogen at elevated pressures. To achieve the objective, conditions of methane doped with NO were probed with synchrotron double imaging photoelec-tron photoion coincidence spectroscopy in a newly developed reactor experiment. Spe-cifically, the target molecule was intermediately formed nitrous acid. Despite recent theoretical reaction rates pointing in the opposite direction, no HNO2 intermediate was found. It was shown that the intermediate should have been detectable since its cation is bound. In contrast, the cis-HONO isomer was found to dissociate upon ionization at energies close to its adiabatic threshold. This circumstance makes the detection of this isomer unattainable with photoionization methods. It was found that the trans-HONO isomer is produced in quantities above the detection threshold. A steep decline of the transition intensities at higher photon energies in the threshold photoelectron spec-trum pointed towards dissociative ionization, which was confirmed by electronic struc-ture methods.
Effect of dissipative environment on collapses and revivals of a nonlinear quantum oscillator
Creators: name: Kaur, Maninder
name: Arora, Bindiya
name: Arvind
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the dissipative dynamics of a wave packet passing through two different non-linear media. The effect of dissipation on the phenomenon of collapses and revivals of a wave packet as it evolves in a Kerr-type non-linear medium (represented by the Hamiltonian $({a}^† a)^2$) is investigated. We find that partial revivals do take place when dissipation values are moderate. For a certain regime of parameters we find a solution where revivals do not die even in the presence of dissipation and the non-linearity appears to compensate for the energy and coherence loss. We consider the next order non-linearity, represented by the Hamiltonian $({a}^† a)^3$, where we observe the phenomena of super revivals. The effect of dissipation in this case has an additional feature of number dependence for the displaced number states. While our simulations explore the degree to which the phenomena of collapses and revivals degrades in a dissipative environment, we also discovered the presence of a situation where degradation is minimal.
description: 10 pages, 11 figures Revtex
(201416) Ada Isabelle Neill
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Thermography Approaches for Building Defect Detection
Creators: name: Fox, Matthew William
Publisher: name: Plymouth University
Year: 2016
Subjects: Passive building thermography
Defect detection
Thermography methodologies

description: Thermography is one technology, which can be used to detect thermally significant defects in buildings and is traditionally performed using a walk-through methodology. Yet because of limitations such as transient climatic changes, there is a key performance gap between image capture and interpretation. There are however new methodologies currently available, which actively address some of these limitations. By better understanding alternative methodologies, the performance gap can be reduced. This thesis contrasts three thermography methodologies (Walk-through, time-lapse and pass-by) to learn how they deal with limitations and address specific building defects and thermal performance issues. For each approach, practical methodologies were developed and used on laboratory experiments (hot plate) and real dwelling case studies. For the real building studies, 133 dwellings located in Devon and Cornwall (South West England) were studied; this sample represents a broad spectrum of construction types and building ages. Experiments testing these three methodologies found individual strengths and weaknesses for each approach. Whilst traditional thermography can detect multiple defects, characterisation is not always easy to achieve due to the effects of transient changes, which are largely ignored under this methodology. Time-lapse thermography allows the observation of transient changes from which more accurate assessment of defect behaviour can be gained. This is due to improved differentiation between environmental conditions (such as cloud cover and clear sky reflections), actual material thermal behaviour and construction defects. However time-lapse thermography is slow, complex and normally only observes one view. Walk-past thermography is a much faster methodology, inspecting up to 50 dwellings per survey session. Yet this methodology misses many potential defects due to low spatial resolutions, single (external only) elevation inspection and ignoring transient climate and material changes. The implications of these results for building surveying practice clearly indicate that for an improved defect characterisation of difficult to interpret defects such as moisture ingress, thermographers should make use of time-lapse thermography. A review of methodology practicalities illustrates how the need for improved characterisation can be balanced against time and resources when deciding upon the most suitable approach. In order to help building managers and thermographers to decide on the most suitable thermography approach, two strategies have been developed. The first combines different thermography methodologies into a phased inspection program, where spatial and temporal resolution increase with each subsequent thermography inspection. The second provides a decision-making framework to help select the most appropriate thermography methodology for a given scenario or defect.
นวัตกรรมเสาไม้เทียมจากพลาสติกเหลือใช้เพื่อสร้างแนวรั้วกันคลื่นชายหาด
Creators: name: วิเชียร พุทธศรี
Publisher: name: คณะสถาปัตยกรรมศาสตร์
Year: 2023
Subjects: เสาไม้เทียม
กันคลื่น
ดักตะกอน
ขยะพลาสติก

description: วารสาร สิ่งแวดล้อมสรรค์สร้างวินิจฉัย (Built Environment Inquiry BEI), 22, 3, 33-50
Parametrized cobordism categories and the Dwyer-Weiss-Williams index theorem
Creators: name: Raptis, George
name: Steimle, Wolfgang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Topology (math.AT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We define parametrized cobordism categories and study their formal properties as bivariant theories. Bivariant transformations to a strongly excisive bivariant theory give rise to characteristic classes of smooth bundles with strong additivity properties. In the case of cobordisms between manifolds with boundary, we prove that such a bivariant transformation is uniquely determined by its value at the universal disk bundle. This description of bivariant transformations yields a short proof of the Dwyer-Weiss-Williams family index theorem for the parametrized A-theory Euler characteristic of a smooth bundle.
description: 22 pages; minor changes; to appear in the Journal of Topology