cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Non-Canonical cis-Acting Elements Regulating Polyadenylation of the Beta-Adducin Pre-mRNA
Creators: name: Nedeljković, Mirjana
Publisher: name: The Open University
Year: 2012

description: The beta adducin gene has a very complex architecture, with tissue-specific use of promoters and polyadenylation sites (PAS). Its expression is restricted to neuronal and hematopoietic tissues. In mice, usage of a distal brain-specific PAS (PAS4) generates an 8. 3 kb long mRNA with an unusually long 3’UTR of about 5.7 kb. Instead, the use of proximal erythroid-specific PASs results in short 3.1-3.7 kb mRNA isoforms. The presence and use of the different alternative PASs in the beta adducin gene are very well conserved among species suggesting an important and specific role for each of the generated 3’UTRs. To study the regulatory mechanisms involved in beta adducin polyadenylation, minigene constructs containing the mouse beta adducin polyadenylation signals were used. The constructs were transfected into HeLa cells and their expression and PAS selection determined by Northern blot analysis. The exclusive usage of the PAS4 in HeLa cells has been observed. All the elements defining the core polyadenylation signal were characterized: the hexanucleotide motif (Hm), the upstream and downstream sequence elements (USE and DSE, respectively) elements, and the cleavage site. Interestingly, I have detected the presence of two novel non-canonical cis-acting elements regulating 3’end processing at the PAS4. Both elements act on long-distance and to the best of our knowledge, long-distance upstream polyadenylation regulatory elements have not previously been described for the non-viral eukaryotic transcripts. The first of these elements was essential to enable polyadenylation at the PAS4. It was located in a region spanning 355 nucleotides and includes the stop codon of beta adducin. The second non-canonical upstream polyadenylation regulatory element seems to inhibit processing at the PAS4. It was located in the region close to the second proximal PAS, about 4.5 kb upstream of the PAS4. These results highlight the complexity of the regulatory mechanisms directing beta adducin pre-mRNA 3’end processing.
Impacts of Lease and Tenure Arrangements on Landlords and Farm Operators
Creators: name: Novak, Frank S.
name: Hornbaker, Robert H.
name: Novak, Frank S.
name: Hornbaker, Robert H.
Publisher: name: Unknown
Year: 1987
Subjects: Agricultural and Food Policy
Financial Economics

description: Least squares analysis of variance is applied to cross-sectional and time-series farm data to provide insight on the impacts of different lease and tenure arrangements on earnings of operators and landlords. Tenure and lease arrangements significantly affected gross farm returns and margins of operators. Lease arrangements were significant for landlord margins in the late 1970's.
Standard Model Top Quark Asymmetry at the Fermilab Tevatron
Creators: name: Bowen, M. T.
name: Ellis, S. D.
name: Rainwater, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Top quark pair production at proton-antiproton colliders is known to exhibit a forward-backward asymmetry due to higher-order QCD effects. We explore how this asymmetry might be studied at the Fermilab Tevatron, including how the asymmetry depends on the kinematics of extra hard partons. We consider results for top quark pair events with one and two additional hard jets. We further note that a similar asymmetry, correlated with the presence of jets, arises in specific models for parton showers in Monte Carlo simulations. We conclude that the measurement of this asymmetry at the Tevatron will be challenging, but important both for our understanding of QCD and for our efforts to model it.
description: 26 p., 10 embedded figs., comment added, version to appear in PRD
title: QGIS - Prolonger le tracé d'une entité polyligne (QGIS 3)
Creators: name: Coutelier, Clément
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: subject: SIG
subject: système d'information géographique
subject: QGIS
subject: vectorisation

description: Il arrive qu’une entité de type polyligne vectorisée dans QGIS doive être reprise par la suite. Cette fiche présente une méthode permettant de prolonger la vectorisation d’une entité polyligne.
Analysis of skin tissues spatial fluorescence distribution by the Monte Carlo simulation
Creators: name: Churmakov, D. Y.
name: Meglinski, I. V.
name: Piletsky, S. A.
name: Greenhalgh, D. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Medical Physics (physics.med-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A novel Monte Carlo technique of simulation of spatial fluorescence distribution within the human skin is presented. The computational model of skin takes into account the spatial distribution of fluorophores, which would arise due to the structure of collagen fibres, compared to the epidermis and stratum corneum where the distribution of fluorophores is assumed to be homogeneous. The results of simulation suggest that distribution of auto- fluorescence is significantly suppressed in the near-infrared spectral region, whereas the spatial distribution of fluorescence sources within a sensor layer embedded in the epidermis is localized at an effective depth.
description: 7 pages, 9 figures
Water Management at UBC Okanagan Part 2: Water Features
Creators: name: Clarke, Angele
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
title: New Roles for Actin-Binding Proteins and PIP2 in Intracellular Calcium Homeostasis
Creators: name: Vasilev, Filip
Publisher: name: The Open University
Year: 2012

description: Spatiotemporal increase of the intracellular Ca2+ is the most universal way to regulate the function of a eukaryotic cell. Owing to a host of actin-binding proteins and enzymes whose activities are modulated by the local concentration of Ca2+, free Ca2+ in cytosol serves as a pivotal second messenger in a variety of cell functions. The rise and fall of intracellular Ca2+ wave has been best illustrated in eggs at fertilization. However, the molecular mechanism by which intracellular Ca2+ is increased in the fertilized egg is largely unknown despite the discoveries of the distinct Ca2+-mobilizing second messengers in the past 30 years. In this thesis, I have used the starfish oocytes to study how Ca2+ signaling can be modulated by the actin cytoskeleton, which is known to be dynamically remodelled during meiotic maturation and fertilization of the egg. The principal issues of my experimental work are: (i) to establish the role of actin-binding proteins and PIP2 in the regulation of the Ca2+ signaling; (ii) to study the effect of the Ca2+-store depletion on Ca2+ signaling and on the structure and function of the actin cytoskeleton, and (iii) to study the role of the actin-cytoskeleton in establishing the block to polyspermy. Microinjected into starfish eggs, actin-binding protein gelsolin, function-blocking antibody to depactin, and the PHVsequestering fusion protein that indirectly alters the actin cytoskeleton, all changed a certain aspect of Ca2+ signaling. Depletion of the Ca2+ store with ionomycin in turn drastically changed the cortical structure and the actin cytoskeleton of the eggs, eventually leading to a deleterious effect on egg activation and early development. Finally, the alteration of the actin cytoskeleton led to failure to establish a fast and slow block to polyspermy. Taken together, this study indicated that the actin cytoskeleton is an important factor that optimizes the Ca2+ response at egg activation and guides monospermic fertilization.
title: Resonance Formation in Electron Collisions With Pyrimidine-Like Targets
Creators: name: Mašin, Zdeněk
Publisher: name: The Open University
Year: 2013

description: In this thesis we apply the R-matrix method to study low-energy (<15 eV) elastic and inelastic electron collisions with the diazine molecules (pyrazine, pyrimidine and pyridazine), (2 and 4) oxo-pyrimidines and the RNA nucleobase uracil. We use these molecules as models for the pyrimidinic DNA nucleobases. The main goal of this work is to study resonance formation in these targets. We test various standard scattering models (Static Exchange, Static Exchange plus Polarization, Close-Coupling) to identify those that produce the most accurate results; we also study simplified versions of these models that allow us to provide detailed insights into the resonance formation. We compare our elastic (for pyrazine and pyrimidine) and inelastic (for pyrimidine) cross sections with available experimental data and find a good agreement. A methodology based on the time-delay analysis is applied that allowed us to find and characterize in detail many new resonances not previously identified. We find an unexpectedly large number of resonances. Most of the new resonances have core-excited shape character and many of them do not enhance (significantly) the elastic or inelastic cross sections for collisions with the molecule in the ground state. These resonances, however, significantly enhance the elastic cross sections for collisions with molecules in electronic excited states. The discovery of a large number of these resonances and their unusual properties are novel and unexpected results. We find that oxygen substitution of the pyrimidine ring does not lead to significant changes in the resonance formation: the resonances in pyrimidinic molecules are associated with the ring structure. We conclude that the picture of resonance formation in pyrimidines is much more complex than expected. Most of the work presented in this thesis has been published in peer-reviewed journals.
Ελλάδα, δημογραφικές εξελίξεις και δημογραφικές προκλήσεις. (Greece, demographic changes and challengers.) DEMONEWS, 35, 2019
Creators: name: BYRON KOTZAMANIS
Publisher: name: figshare
Year: 2021
Subjects: subject: 160399 Demography not elsewhere classified
subject: FOS: Sociology

description: The demographic profile of Greece at the end of the 2010s, differs from that of the first post war period. We are more than in the 1950s, we live much longer, we have a significantly older age composition, we have fewer children and fewer marriages, we divorce more easily, the structure of our families and households has radically changed, while we are extremely unevenly distributed in space and at the same time our population which was "nationally homogeneous" includes today about 900,000 foreigners living permanently in Greece. At the same time, demographic developments over the next few decades will lead to an acceleration of aging and a decline of the population size. The effects of the above and the expected changes have already begun to concern us. We begin to realize, albeit belatedly, that Demography is a decisive factor for our future, a factor we no longer have the luxury of underestimating as demographic changes is now one of the major challenges we must face. This article summarizes the most important post-war changes in the population - including those we expect in the coming decades - and highlights the need to formulate a coherent demographic policy, which requires, among other interventions, the strengthening of demographic research and education.
Η Ελλάδα στα τέλη της δεκαετίας του 2010, δημογραφικά, διαφέρει σημαντικά από αυτήν της πρώτης μεταπολεμικής περίοδού. Είμαστε περισσότεροι απ’ ότι το 1950, αλλά, ταυτόχρονα, ζούμε πολύ περισσότερα χρόνια, είμαστε πιο γερασμένοι, κάνουμε λιγότερα παιδιά και λιγότερους γάμους, χωρίζουμε πιο εύκολα, η δομή των νοικοκυριών και των οικογενειών μας έχει αλλάξει ριζικά, είμαστε εξαιρετικά άνισα κατανεμημένοι στον χώρο και ταυτόχρονα ο πληθυσμός μας από σχετικά «εθνικά ομοιογενής» συμπεριλαμβάνει σήμερα 900.000 περίπου αλλοδαπούς που ζουν μόνιμα στη χώρα μας. Ταυτόχρονα, οι δημογραφικές εξελίξεις τις άμεσα επόμενες δεκαετίες θα οδηγήσουν σε μια επιτάχυνση της γήρανσης και σε μια μείωση, μικρότερη ή μεγαλύτερη, του πληθυσμού μας. Οι επιπτώσεις τόσο των προαναφερθεισών αλλαγών, όσο και αυτών που αναμένονται, είναι πολλαπλές, και έχουν αρχίσει ήδη να μας προβληματίζουν. Αρχίζουμε, έστω και καθυστερημένα, να καταλαβαίνουμε ότι η Δημογραφία αποτελεί καθοριστικό παράγοντα για το μέλλον μας, παράγοντα που δεν έχουμε πλέον την πολυτέλεια να υποτιμούμε καθώς το «δημογραφικό» είναι σήμερα μια από τις μεγάλες προκλήσεις που καλούμαστε να αντιμετωπίσουμε. Στο άρθρο αυτό εκτίθενται συνοπτικά οι σημαντικότερες μεταπολεμικά αλλαγές στον πληθυσμό μας -ως και αυτές που αναμένουμε τις επόμενες δεκαετίες-, και, επισημαίνεται η αναγκαιότητα της διαμόρφωσης μιας συνεκτικής δημογραφικής πολιτικής, που απαιτεί, εκτός των άλλων, και την ενίσχυση της δημογραφικής έρευνας και παιδείας.
Formation and dynamics of exotic hypernuclei in heavy-ion collisions
Creators: name: Feng, Zhao-Qing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The dynamics of exotic hypernuclei in heavy-ion collisions has been investigated thoroughly with a microscopic transport model. All possible channels on hyperon ($Λ$, $Σ$ and $Ξ$) production near threshold energies are implemented in the transport model. The light complex fragments (Z$\leq$2) are constructed with the Wigner-function method. The classical phase-space coalescence is used for recognizing heavy nuclear and hyperfragments and the statistical model is taken for describing the decay process. The nuclear fragmentation reactions of the available experimental data from the ALADIN collaboration are well reproduced by the combined approach. It is found that the in-medium potentials of strange particles influence the strangeness production and fragment formation. The hyperfragments are mainly created in the projectile or target-like rapidity region and the yields are reduced about the 3-order magnitude in comparison to the nuclear fragments. The hypernuclear dynamics of HypHI data is well described with the model. The possible experiments for producing the neutron-rich hyperfragments at the high-intensity heavy-ion accelerator facility (HIAF) are discussed.
description: 8 pages, 8 figures
The TTIK approach for neutrons
Creators: name: Goldberg, V. Z.
name: Gazeeva, E. M.
name: Golovkov, M. S.
name: Bezbakh, A. A.
name: Nauruzbayev, D. K.
name: Nurmukhanbetova, A. K.
name: Kurmanaliyev, Zh.
name: Serikov, A.
name: Zalewski, B.
name: Rogachev, G. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We applied Thick Target Inverse Kinematics Method for a study of resonances decaying through neutron emission. As a test we used a well-studied, because of its role in s-process in stars, $^{13}$C($α$; n) reaction. The observed energy resolution for the $^{13}$C($α$; n) excitation function was $\sim$60 keV, the largest contributions coming from the time structure of the beam and the thickness of the neutron detector. These measurements demonstrated the high efficiency of the approach and revealed a disagreement with R-matrix calculations based on parameters of the most recent previous analysis.
The Molecular Diffusion of Ice Crystals of Various Shapes
Creators: name: Youk, Hyun
name: List, Roland
name: Ola, Theophilus
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The growth by molecular diffusion (Reynold's number (Re) = 0) of ice crystals of different shapes, represented by the Sherwood number (Sh) is calculated using an electrical analog which relates capacity (C) to Sh. Although experimental data on dependence of Sh on Re for various ice crystals of interest in cloud physics have been previously obtained, extrapolation of the data to smaller particles for Re=0 has been unreliable. We present a simple computational algorithm for computing Sh at Re=0 for various crystals of interest, which will allow proper coverage over the whole Re range applicable to ice crystals. The method we present can be applied to any crystal of rectilinear shape. The approach was as follows: the model crystal is positioned in a box and an electric field is applied between the crystal and the box, simulating the initial growth stage of ice crystals. Using a finite Cartesian grid system of variable lattice separations, the corners of ice crystal are assigned to particular lattice points, thereby defining the geometry of the crystal. A discrete version of Gauss' flux law is developed and used for this lattice system. Sh (at Re=0) is obtained for hexagonal plates, hexagonal columns, broad branched crystals, stellar crystals, and capped columns. Our calculations reveal that our simple computational algorithm provides the values of Sh for these shapes to within 5% error from the values obtained through estimates in previous studies.
description: 4 pages, 3 figures, to be published in proceedings of "14th International Conference on Clouds and Precipitation"
title: The Commodification of the Celebrity Portrait: an analysis of photographic business practice in relation to image mass-production in London c. 1857-1880
Creators: name: LAMB, JANE
Publisher: name: The Open University
Year: 2019

description: ABSTRACT The mass-produced carte de visite was a new kind of celebrity portrait. It was affordable and available to a wide middle-class market, and it was hugely popular in the 1860s and 1870s. The cartes are extant in large numbers today and offer a valuable Victorian archive ripe for investigation, yet they have, so far, been deemed of little historical value, and consequently have been under-researched in the history of photography. This thesis is centred around a large collection of over one thousand celebrity cartes de visite in the author’s possession. Patterns running through the archive have been identified, and show that a great deal can be learnt about photographers’ business strategies and middle-class society from the images. The first half of the thesis explores the structure of the new carte de visite business in two chapters: in its commercial organisation and in the construction and presentation of the product to a target middle-class market. The establishment of a new profession is highlighted in which commercial activity was displayed more openly on the product as the century progressed, and in which widened middle-class interests were presented in content. Three following case studies provide a deeper investigation in relation to particular subject areas, those of monarchy, government and Church, chosen especially as they were traditional portrait areas used to define the British constitution. These case studies show that studios adapted their output to meet collectors’ changing views on the role of celebrity whilst retaining an underlying representation of the ‘character’ of a new enlightened society. The thesis spotlights a new archive through which a clearer understanding of mid-Victorian business and society can be gained: the research therefore not only fills a gap in photographic history, but adds to knowledge on mid-Victorian middle-class culture.
title: Negotiating Research Participation in Community-Based Studies on the Kenyan Coast: Fieldworkers' Roles, and Implications for Ethical Practice
Creators: name: Kamuya, Dorcas Mwikali
Publisher: name: The Open University
Year: 2013

description: In this thesis, I explore the nature of research interactions between fieldworkers (FWs) and research participants in a large, long-term international collaborative centre on the Kenyan Coast. Fieldworkers are members of local communities employed in research with the main responsibilities of communicating about studies, and carrying out biomedically simple, non-invasive procedures. Being socially embedded in the communities in which research is conducted, fieldworkers can potentially strengthen studies and research ethics through their insider knowledge of local norms, and of hard-to-reach populations. Being socially embedded can also present problems on how to respond to questions and demands in a context of wealth and health inequalities. I designed a mixed methodology study, primarily qualitative, to unpack the issues that fieldworkers at the frontline of research implementation face, how they resolve these, and the implications for policy and practice. I found that fieldworkers and other research staff working in communities face considerable dilemmas including those related to household decision-making dynamics for research; and those related to types, levels and scope of research benefits given to participants and communities. The nature of pre-existing relationships within households, and of relationships developed between FWs and household members, apparently strongly influenced discussions and research participation choices. Relationships were often built and nurtured by both fieldworkers and participants. ‘Silent refusals’- a situation of inconsistent participation and reluctance to openly refuse or withdraw from research - emerged as a key challenge for fieldworkers. Negotiations were often imbued with subtle power relations across different sets of interactions; within households, between FWs and participants, and between FWs and supervisors, with potential to shift and shape the research implementation processes. There were often no easy answers to these and other issues fieldworkers faced; they appeared to draw on study guidelines, formal and informal supervision, peers and their own judgements in making choices. Drawing on these findings, I suggest that understanding and responding to the issues that fieldworkers face throughout their fieldwork is important in supporting the practical application of ethics guidelines including those related to community engagement and consent; and in contributing to normative debates.
Model Order Reduction in Neuroscience
Creators: name: Karasözen, Bülent
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Numerical Analysis (math.NA)
subject: FOS: Biological sciences
subject: FOS: Mathematics
subject: 93A15, 92C55, 37M10, 37M99, 37N40, 65R32

description: The human brain contains approximately $10^9$ neurons, each with approximately $10^3$ connections, synapses, with other neurons. Most sensory, cognitive and motor functions of our brains depend on the interaction of a large population of neurons. In recent years, many technologies are developed for recording large numbers of neurons either sequentially or simultaneously. An increase in computational power and algorithmic developments have enabled advanced analyses of neuronal population parallel to the rapid growth of quantity and complexity of the recorded neuronal activity. Recent studies made use of dimensionality and model order reduction techniques to extract coherent features which are not apparent at the level of individual neurons. It has been observed that the neuronal activity evolves on low-dimensional subspaces. The aim of model reduction of large-scale neuronal networks is an accurate and fast prediction of patterns and their propagation in different areas of the brain. Spatiotemporal features of the brain activity are identified on low dimensional subspaces with methods such as dynamic mode decomposition (DMD), proper orthogonal decomposition (POD), discrete empirical interpolation (DEIM) and combined parameter and state reduction. In this paper, we give an overview of the currently used dimensionality reduction and model order reduction techniques in neuroscience. This work will be featured as a chapter in the upcoming Handbook on Model Order Reduction,(P. Benner, S. Grivet-Talocia, A. Quarteroni, G. Rozza, W. H. A. Schilders, L. M. Silveira, eds, to appear on DE GRUYTER)
description: 14 pages, no figures
title: Auditing in Contemporary Scientologies: The Self, Authenticity, and Material Culture
Creators: name: Thomas, Aled
Publisher: name: The Open University
Year: 2019

description: This thesis is about a Scientologist practice called ‘auditing’. Auditing is a hybrid practice that combines psychology with religious and mystical notions of esoteric knowledge and experience, and it is a technique that enables Scientologists to make progress through pre-specified levels of achievement. The purpose of this thesis is to examine the nuanced nature of auditing practice in a variety of Scientologies, ranging from the Church of Scientology (CoS) to the ‘Free Zone’, an umbrella term for groups and individuals that practise Scientology away from the institutionalized CoS, whether this is independently or part of an organized group. That auditing draws both from discourses of psychology and religious sources is a mark of contemporary Western cultures. Notionally impervious boundaries between religion and the secular-scientific have broken down, giving way to hybrid formations such as Scientology whose practices constitute negotiations of competing forces in Western societies. This research aims to assist scholarly understanding of Scientology as a varied belief system, featuring many practitioners with different understandings of what it means to be a Scientologist, and how the auditing process is practised accordingly. Additionally, this thesis aims to act as a framework for the study of similar movements formed in recent decades, allowing scholars of New Religious Movements (NRMs) and Scientology in particular to contrast highly institutionalized and hierarchical environments of practice on the one hand (such as the CoS) with unregulated and fluid ones (such as the Free Zone) on the other. This thesis makes an original contribution to knowledge both empirically and conceptually. Firstly, although previous studies of auditing and more widely of Scientology exist, this study has enjoyed access to a range of auditing practitioners in types of Scientology beyond the CoS. This thesis will therefore provide an original account of auditing as it is practised in both the CoS and Free Zone spheres, examining the diverse nature of the auditing technique as a process that combines different series of procedures, material culture, and both religious and secular elements pertinent to particular ideas about the mind, body, and the self. Secondly, previous research on NRMs and Scientology in particular have tended to focus either on NRMs as indices of broad social processes such as secularization or globalization or (in earlier research) as exemplars of exotic processes such as charismatic authority and brainwashing. This research takes a completely different approach, seeking to use the auditing practice as a method of providing an in-depth case study of an NRM in transition and transformation in the 21st century.
Pseudouroctonus peccatum Tate, Riddle, Soleglad et Graham 2013
Creators: name: Ayrey, Richard F.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Vaejovidae
Pseudouroctonus
Pseudouroctonus peccatum

description: Pseudouroctonus peccatum (12 specimens)
Kyle Canyon, Spring Mountains, Clark County, Nevada, USA, 24 September 2014, leg. R. F. Ayrey, 2 ♀, 3 ♂ (RA1047, RA1049, RA1145, RA1146, RA1048, RFA); 14 June 2015, leg. R. F. Ayrey, 2 ♂ (RA1198, RA1199, RFA); 12 September 2015, leg. R. F. Ayrey, 4 ♀, 1 ♂ (RA2177, RA2178, RA2179, RA2180, RA2181, RFA).
 Distribution. Known only from the type locality: Kyle Canyon, Spring Mountains, Clark County, Nevada, USA; elevation of 2,103 m asl.
description: Published as part of Ayrey, Richard F., 2016, Pseudouroctonus peccatum Tate et al., 2013, Rediscovered, pp. 1-5 in Euscorpius 214 (214) on page 1, DOI: 10.18590/euscorpius.2016.vol2016.iss214.1, http://zenodo.org/record/4648191
Experimental optimal orienteering via parallel and antiparallel spins
Creators: name: Tang, Jun-Feng
name: Hou, Zhibo
name: Shang, Jiangwei
name: Zhu, Huangjun
name: Xiang, Guo-Yong
name: Li, Chuan-Feng
name: Guo, Guang-Can
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Antiparallel spins are superior in orienteering to parallel spins. This intriguing phenomenon is tied to entanglement associated with quantum measurements rather than quantum states. Using photonic systems, we experimentally realize the optimal orienteering protocols based on parallel spins and antiparallel spins, respectively. The optimal entangling measurements for decoding the direction information from parallel spins and antiparallel spins are realized using photonic quantum walks, which is a useful idea that is of wide interest in quantum information processing and foundational studies. Our experiments clearly demonstrate the advantage of antiparallel spins over parallel spins in orienteering. In addition, entangling measurements can extract more information than local measurements even if no entanglement is present in the quantum states.
CPR-GCN: Conditional Partial-Residual Graph Convolutional Network in Automated Anatomical Labeling of Coronary Arteries
Creators: name: Yang, Han
name: Zhen, Xingjian
name: Chi, Ying
name: Zhang, Lei
name: Hua, Xian-Sheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Automated anatomical labeling plays a vital role in coronary artery disease diagnosing procedure. The main challenge in this problem is the large individual variability inherited in human anatomy. Existing methods usually rely on the position information and the prior knowledge of the topology of the coronary artery tree, which may lead to unsatisfactory performance when the main branches are confusing. Motivated by the wide application of the graph neural network in structured data, in this paper, we propose a conditional partial-residual graph convolutional network (CPR-GCN), which takes both position and CT image into consideration, since CT image contains abundant information such as branch size and spanning direction. Two majority parts, a Partial-Residual GCN and a conditions extractor, are included in CPR-GCN. The conditions extractor is a hybrid model containing the 3D CNN and the LSTM, which can extract 3D spatial image features along the branches. On the technical side, the Partial-Residual GCN takes the position features of the branches, with the 3D spatial image features as conditions, to predict the label for each branches. While on the mathematical side, our approach twists the partial differential equation (PDE) into the graph modeling. A dataset with 511 subjects is collected from the clinic and annotated by two experts with a two-phase annotation process. According to the five-fold cross-validation, our CPR-GCN yields 95.8% meanRecall, 95.4% meanPrecision and 0.955 meanF1, which outperforms state-of-the-art approaches.
description: This work is done by Xingjian Zhen during internship in Alibaba Damo Academy
Shift of the molecular bound state threshold in dense ultracold Fermi gases with Feshbach resonance
Creators: name: Combescot, R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a dense ultracold Fermi gas in the presence of a Feshbach resonance. We investigate how the treshold for bound state formation, which is just at the Feshbach resonance for a dilute gas, is modified due to the presence of the Fermi sea. We make use of a preceding framework of handling this many-body problem. We restrict ourselves to the simple case where the chemical potential $ μ$ is negative, which allows us to cover in particular the classical limit where the effect is seen to disappear. We show that, within a simple approach where basically only the effect of Pauli exclusion is included, the Fermi sea produces a large shift of the threshold, which is of order of the width of the Feshbach resonance. This is in agreement with very recent experimental findings.
description: one reference added
Adversarial Deep Network Embedding for Cross-network Node Classification
Creators: name: Shen, Xiao
name: Dai, Quanyu
name: Chung, Fu-lai
name: Lu, Wei
name: Choi, Kup-Sze
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, the task of cross-network node classification, which leverages the abundant labeled nodes from a source network to help classify unlabeled nodes in a target network, is studied. The existing domain adaptation algorithms generally fail to model the network structural information, and the current network embedding models mainly focus on single-network applications. Thus, both of them cannot be directly applied to solve the cross-network node classification problem. This motivates us to propose an adversarial cross-network deep network embedding (ACDNE) model to integrate adversarial domain adaptation with deep network embedding so as to learn network-invariant node representations that can also well preserve the network structural information. In ACDNE, the deep network embedding module utilizes two feature extractors to jointly preserve attributed affinity and topological proximities between nodes. In addition, a node classifier is incorporated to make node representations label-discriminative. Moreover, an adversarial domain adaptation technique is employed to make node representations network-invariant. Extensive experimental results demonstrate that the proposed ACDNE model achieves the state-of-the-art performance in cross-network node classification.
title: The construction and representation of urban identities : public and private lives in late medieval Bury St Edmunds
Creators: name: Merry, Mark Liam
Publisher: name: University of Kent
Year: 2022

description: This thesis relocates the individual within the processes of representation in order to compensate for the relative neglect the subject has received in recent treatments of medieval urban studies. It reassesses the behaviour of urban communities not in terms of the demographic and economic, by aligning the particular community along the growth/decline debate; but by viewing social process in terms of the interpersonal relationships of the town's inhabitants. This has been pursued by examining the construction and representation of personal and communal identity within defined urban contexts, and by suggesting a method by which these subjects might provide a useful critical tool for approaching traditional urban historical concerns from a new perspective. Sociological conceptualisations of self, person and community have been invoked to provide a vocabulary for discussing the issues involved, and methods for reconsidering approaches to evidence using a combination of qualitative and quantitative techniques. Using Bury St Edmunds, a relatively sophisticated and somewhat distinctive urban community, an examination of the ways in which identity and self representation are enacted by its inhabitants is undertaken to establish the role of the individual within the social processes at work within urban communities. it is shown that identity can be seen as a mechanism by which communities order and regulate their participants. Specific case studies of individual identity are presented alongside a model of communal identity in the town, with the intention of situating the individual constructions of identity within the contextual discourses of identity produced by the community. The location of the individual within the communal constructions of identity enables the observation of the effects that individuals had upon their late medieval urban communities, with the result that the nature of social change can be seen to originate from the activities and perceptions of individuals, rather than communities.
Unified Solution of the Expected Maximum of a Random Walk and the Discrete Flux to a Spherical Trap
Creators: name: Majumdar, Satya N.
name: Comtet, Alain
name: Ziff, Robert M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Two random-walk related problems which have been studied independently in the past, the expected maximum of a random walker in one dimension and the flux to a spherical trap of particles undergoing discrete jumps in three dimensions, are shown to be closely related to each other and are studied using a unified approach as a solution to a Wiener-Hopf problem. For the flux problem, this work shows that a constant c = 0.29795219 which appeared in the context of the boundary extrapolation length, and was previously found only numerically, can be derived explicitly. The same constant enters in higher-order corrections to the expected-maximum asymptotics. As a byproduct, we also prove a new universal result in the context of the flux problem which is an analogue of the Sparre Andersen theorem proved in the context of the random walker's maximum.
description: Two figs. Accepted for publication, Journal of Statistical Physics
Continuum and CO/HCO+ Emission from the Disk Around the T Tauri Star LkCa 15
Creators: name: Qi, Chunhua
name: Kessler, Jacqueline E.
name: Koerner, David W.
name: Sargent, Anneila I.
name: Blake, Geoffrey A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present OVRO Millimeter Array lambda = 3.4 - 1.2 mm dust continuum and spectral line observations of the accretion disk encircling the T Tauri star LkCa 15. The 1.2 mm dust continuum emission is resolved, and gives a minimum diameter of 190 AU and an inclination angle of 57+/-5 degrees. There is a noticeable, but at present poorly constrained, decrease in the continuum spectral slope with frequency that may result from the coupled processes of grain growth and dust settling. Imaging of the fairly intense emission from the lowest rotational transitions of CO, 13CO and HCO+ reveals a rotating disk and emission extends to 750 AU and the characteristic radius of the disk is determined to be around 425 AU (HWHM) based on model fits to the CO velocity field. The disk mass derived from the CO isotopologues with ``typical'' dense cloud abundances is still nearly two orders of magnitude less than that inferred from the dust emission, which is probably due to extensive molecular depletion in the cold, dense disk midplane. N2H+ 1-0 emission has also been detected which, along with HCO+, sets a lower limit to the fractional ionization of 10^{-8} in the near-surface regions of protoplanetary disks. This first detection of N2H+ in circumstellar disks has also made possible a determination of the N2/CO ratio (~2) that is at least an order of magnitude larger than those in the envelopes of young stellar objects and dense clouds. The large N2/CO ratio indicates that our observations probe disk layers in which CO is depleted but some N2 remains in the gas phase. Such differential depletion can lead to large variations in the fractional ionization with height in the outer reaches of circumstellar disks, and may help to explain the relative nitrogen deficiency observed in comets.
description: Submitted to ApJ, 28 pages, 7 figures
Formation of soliton trains in Bose-Einstein condensates as a nonlinear Fresnel diffraction of matter waves
Creators: name: Kamchatnov, A. M.
name: Gammal, A.
name: Abdullaev, F. Kh.
name: Kraenkel, R. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The problem of generation of atomic soliton trains in elongated Bose-Einstein condensates is considered in framework of Whitham theory of modulations of nonlinear waves. Complete analytical solution is presented for the case when the initial density distribution has sharp enough boundaries. In this case the process of soliton train formation can be viewed as a nonlinear Fresnel diffraction of matter waves. Theoretical predictions are compared with results of numerical simulations of one- and three-dimensional Gross-Pitaevskii equation and with experimental data on formation of Bose-Einstein bright solitons in cigar-shaped traps.
description: 8 pages, 3 figures
Replica wormhole and information retrieval in the SYK model coupled to Majorana chains
Creators: name: Chen, Yiming
name: Qi, Xiao-Liang
name: Zhang, Pengfei
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by recent studies of the information paradox in (1+1)-D anti-de Sitter spacetime with a bath described by a (1+1)-D conformal field theory, we study the dynamics of second Rényi entropy of the Sachdev-Ye-Kitaev (SYK) model ($χ$) coupled to a Majorana chain bath ($ψ$). The system is prepared in the thermofield double (TFD) state and then evolved by $H_L+H_R$. For small system-bath coupling, we find that the second Rényi entropy $S^{(2)}_{χ_L, χ_R}$ of the SYK model undergoes a first order transition during the evolution. In the sense of holographic duality, the long-time solution corresponds to a "replica wormhole". The transition time corresponds to the Page time of a black hole coupled to a thermal bath. We further study the information scrambling and retrieval by introducing a classical control bit, which controls whether or not we add a perturbation in the SYK system. The mutual information between the bath and the control bit shows a positive jump at the Page time, indicating that the entanglement wedge of the bath includes an island in the holographic bulk.
description: 25 pages, 12 figures
Backward Optimized Orthogonal Matching Pursuit
Creators: name: Andrle, M.
name: Rebollo-Neira, L.
name: Sagianos, E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Mathematics (math.GM)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 41A45

description: A recursive approach for shrinking coefficients of an atomic decomposition is proposed. The corresponding algorithm evolves so as to provide at each iteration a) the orthogonal projection of a signal onto a reduced subspace and b) the index of the coefficient to be disregarded in order to construct a coarser approximation minimizing the norm of the residual error.
description: Accpeted for publication in IEEE Signal Processing Letters- 15 pages
Exploring Sustainability: Supporting Mental Health of Health Care Students
Creators: name: Barbosa, Kristel Vanessa
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Three-loop verification of a new algorithm for the calculation of a $β$-function in supersymmetric theories regularized by higher derivatives for the case of ${\cal N}=1$ SQED
Creators: name: Aleshin, S. S.
name: Durandina, I. S.
name: Kolupaev, D. S.
name: Korneev, D. S.
name: Kuzmichev, M. D.
name: Meshcheriakov, N. P.
name: Novgorodtsev, S. V.
name: Petrov, I. A.
name: Shatalova, V. V.
name: Shirokov, I. E.
name: Shirokova, V. Yu.
name: Stepanyantz, K. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We verify a recently proposed method for obtaining a $β$-function of ${\cal N}=1$ supersymmetric gauge theories regularized by higher derivatives by an explicit calculation. According to this method, a $β$-function can be found by calculating specially modified vacuum supergraphs instead of a much larger number of the two-point superdiagrams. The result is produced in the form of a certain integral of double total derivatives with respect to the loop momenta. Here we compare the results obtained for the three-loop $β$-function of ${\cal N}=1$ SQED in the general $ξ$-gauge with the help of this method and with the help of the standard calculation. Their coincidence confirms the correctness of the new method and the general argumentation used for its derivation. Also we verify that in the considered approximation the NSVZ relation is valid for the renormalization group functions defined in terms of the bare coupling constant and for the ones defined in terms of the renormalized coupling constant in the HD+MSL scheme, both its sides being gauge-independent.
description: 19 pages, 8 figures; title changed, minor corrections; the final version to appear in Nuclear Physics B
Instabilities of one-dimensional stationary solutions of the cubic nonlinear Schrodinger equation
Creators: name: Thelwell, Roger J.
name: Carter, John D.
name: Deconinck, Bernard
Publisher: name: arXiv
Year: 2005
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The two-dimensional cubic nonlinear Schrodinger equation admits a large family of one-dimensional bounded traveling-wave solutions. All such solutions may be written in terms of an amplitude and a phase. Solutions with piecewise constant phase have been well studied previously. Some of these solutions were found to be stable with respect to one-dimensional perturbations. No such solutions are stable with respect to two-dimensional perturbations. Here we consider stability of the larger class of solutions whose phase is dependent on the spatial dimension of the one-dimensional wave form. We study the spectral stability of such nontrivial-phase solutions numerically, using Hill's method. We present evidence which suggests that all such nontrivial-phase solutions are unstable with respect to both one- and two-dimensional perturbations. Instability occurs in all cases: for both the elliptic and hyperbolic nonlinear Schrodinger equations, and in the focusing and defocusing case.
description: Submitted: 13 pages, 3 figures