cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: DEPRECATED: Delay Hierarchy Propagation Model
Creators: name: Soliman, Ehab Mohammed
Publisher: name: University of Plymouth
Year: 2005

description: Construction projects are always exposed to delay. Research has shown that most projects encounter delays and this problem is a global one. Previous research related to delays in construction projects have been dedicated to measuring and ranking the direct delays that have occurred. These types of delay are past delays and have already affected many aspects of the project's performance. This type of research is of the reactive type and handles delays after they have happened. The objective of this research is to model the construction project delays that can be used to predict the level of delays that the project could face during its future life. The proposed Delay Hierarchy Propagation Model (DHPM) is the first attempt to model delays in the construction project. This model is an innovative predictive approach to anticipate the future encountered delays before they become real. The model assumes that the direct delay is generated from earlier events or aspects that are found before the direct delay occurs; these events are called the root delay causes. These root delay causes need to be analysed, measured and managed in order to prevent or mitigate the effect of a later direct delay in the project life. The direct delays were analysed by a cause-effect technique to extract a set of root delay causes. The model assumes that the root delay causes will influence the project resources supply rate. The resource shortage then leads to activity delay and, hence possible delay to the whole project. The DHPM consists of two interrelated models: a Resource Shortage Possibility (RSP) model and the Predicting Project Delay model (PPD) model. The RSP model objective is to predict the possibility of resource shortage, whilst the PPD model objectives are to predict the project finish time and to define the critical areas for the project to delay using the output of the RSP model as input. The RSP model was verified through interview questionnaires with a number of selected personnel from the construction industry. The Delphi method was used to enhance the questionnaire results. The RSP model calculations used a combination of fuzzy logic, analytical hierarchy process (AHP) and multi-attribute theory to obtain the model output. A prototype computer program was introduced. The prototype computer program was then tested on a real construction project. The application of the RSP model showed that it is viable. The PPD model used probabilistic networking to predict the finish time of the project. The model introduced two new terms that can be used to define the most critical activities and the possible resource influence to delay. The comparison between PPD and the classical critical path method (CPM), programme evaluation and review technique (PERT) and Monte Carlo simulation revealed that the proposed model provides new information required to enhance delay management by project management staff.
Художественная культура древнерусского города ІХ-Х вв.
Creators: name: Орлов, Руслан
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 430101
subject: Archaeological science

description: Орлов Р.С. Художественная культура древнерусского города ІХ-Х вв.. – Тезисы докладов сов. делегации на V Конгрессе МУСА. – М., 1985. - С.85-86.Artistic culture of the ancient Rus city of the 9th-10th centuries.
The role of microRNAs in the early life human innate immune response
Creators: name: Cho, Patricia
Publisher: name: University of British Columbia
Year: 2013

description: Neonates are more susceptible to infections than adults which suggests a suboptimal host immune defense. The innate immune response is the first line of defense against pathogens and must be tightly regulated. Recently, microRNAs (miRNAs) have emerged as important regulators of many biological processes. In the innate immune response, miRNAs positively and negatively regulate signalling to promote or dampen the immune response. The role of miRNAs in the development of the innate immune response, particularly in neonatal host defense, is not well understood. In this thesis work, we comprehensively profiled miRNAs in order to decipher a potential role for miRNAs in innate immune ontogeny. To this end, we contrasted miRNA expression in unstimulated versus stimulated monocytes from adult versus cord blood (CB) donors. Six immune responsive miRNAs were selected as candidates for additional studies, three of which were novel miRNAs that have not been previously investigated in innate immunity. Over-expression of these candidates in human monocytes resulted in significant changes in cytokine and chemokine production. While this verified their functional regulatory role in innate immunity, none of these cytokines/chemokines were predicted to be regulated by the selected miRNAs leaving the intermediate targets to be determined. These six candidate miRNAs were further characterized for expression kinetics. In adults, miRNA expression was rapidly induced within the first 8 hours of TLR stimulation and returned to near basal levels by 24 hours post stimulation. In CB monocytes however, miRNA expression was only observed to gradually increase, if at all, over 24 hours and expression levels never matched that observed in adult monocytes. These age-dependent differences in miRNA expression kinetics may relate to an overall inability in CB monocytes to process miRNAs into the biologically functional form. In summary, my work has shown that there are clear differences in miRNA expression between adult and CB monocytes, and this may be a result of deficiencies in the miRNA biogenesis machinery or a delay in expression in CB monocytes. Further work can now proceed to determine the underlying molecular mechanism(s) and functional implication(s) of these striking age-dependent differences in miRNA expression in innate immunity.
The Core-Cusp Problem in Cold Dark Matter Halos and Supernova Feedback: Effects of Oscillation
Creators: name: Ogiya, Go
name: Mori, Masao
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This study investigates the dynamical response of dark matter (DM) halos to recurrent starbursts in forming less-massive galaxies to solve the core-cusp problem. The gas, which is heated by supernova feedback after a starburst, expands and the star formation then terminates. This expanding gas loses energy by radiative cooling and then falls back toward the galactic center. Subsequently, the starburst is enhanced again. This cycle of expansion and contraction of the interstellar gas leads to a repetitive change in the gravitational potential of the gas. The resonance between DM particles and the density wave excited by the oscillating potential plays a key role in understanding the physical mechanism of the cusp-core transition of DM halos. DM halos effectively gain kinetic energy from the baryon potential through the energy transfer driven by the resonance between the particles and density waves. We determine that the critical condition for the cusp-core transition is such that the oscillation period of the gas potential is approximately the same as the local dynamical time of DM halos. We present the resultant core radius of a DM halo after the cusp-core transition induced by the resonance by using the conventional mass density profile predicted by the cold dark matter models. Moreover, we verify the analytical model by using $N$-body simulations, and the results validate the resonance model.
description: 12 pages, 12 figures, 3 tables
title: Feasibility of virtual 360° patient counselling environment with CCTA patients
Creators: name: Paalimäki-Paakki, Karoliina
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Radiographers
subject: Cardiac
subject: eHealth
subject: CT-Angiography
subject: CT
subject: Computer Applications-Teleradiology
subject: Teleradiology
subject: Patterns of Care

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Noncommunicable (NDCs) or chronic diseases are in charge of 71% of all deaths globally, the rapid increase in the number of patients suffering from NDCs propose a real need for structural changes in the organization of the health care system. Four...
Appiah et al. Chronic Intermittent Hypoxia and Ovariectomy Exert Independent and Region-specific Effects on ΔFosB Expression in and Increase Blood Pressure in Female Rats
Creators: name: Cunningham, Tom
name: Appiah, Cephas
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 320803
subject: Systems physiology
classificationCode: 320901
subject: Autonomic nervous system
classificationCode: 320903
subject: Central nervous system

description: We investigated the effects of ovarian hormone depletion and chronic intermittent hypoxia (CIH) on blood pressure and ΔFosB staining in central autonomic regions. Our findings indicate that ovariectomy (OVX) and CIH have independent effects on blood pressure and produce region-specific changes in ΔFosB staining in the central autonomic regions associated with hypertension. This suggests that the effects of CIH and OVX on ΔFosB staining and hypertension are not additive.
title: An appraisal of clinical teaching of radiography students in some tertiary hospitals in Nigeria
Creators: name: Okeji, Mark
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: eHealth
subject: Conventional radiography
subject: Audit and standards
subject: Education and training

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To assess the attitude and perception of radiographers and student radiographers towards clinical postings in low resource country. Clinical training of student radiographers in hospital environment is an integral part of the academic curriculum to...
Mean-field description of pairing effects, BKT physics, and superfluidity in 2D Bose gases
Creators: name: Chien, Chih-Chun
name: She, Jianhuang
name: Cooper, Fred
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive a mean-field description for two-dimensional (2D) interacting Bose gases at arbitrary temperatures. We find that genuine Bose-Einstein condensation with long-range coherence only survives at zero temperature. At finite temperatures, many-body pairing effects included in our mean-field theory introduce a finite amplitude for the pairing density, which results in a finite superfluid density. We incorporate Berenzinskii-Kosterlitz-Thouless (BKT) physics into our model by considering the phase fluctuations of our pairing field. This then leads to the result that the superfluid phase is only stable below the BKT temperature due to these phase fluctuations. In the weakly interacting regime at low temperature we compare our theory to previous results from perturbative calculations, renormalization group calculations as well as Monte Carlo simulations. We present a finite-temperature phase diagram of 2D Bose gases. One signature of the finite amplitude of the pairing density field is a two-peak structure in the single-particle spectral function, resembling that of the pseudogap phase in 2D attractive Fermi gases.
description: 9 pages, 3 figures
title: Role of CT in evaluation of abdominal hernias.
Creators: name: Vyas, Zeny
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Hernia
subject: Education
subject: CT
subject: Gastrointestinal tract
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To illustrate the CT findings in different types of hernias. To determine the role of CT in confidently diagnosing different types of hernias, their contents and differentiating from other masses. To furnish a proper differential diagnosis for...
Generalized structures of ten-dimensional supersymmetric solutions
Creators: name: Tomasiello, Alessandro
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Four-dimensional supersymmetric type II string theory vacua can be described elegantly in terms of pure spinors on the generalized tangent bundle T+T*. In this paper, we apply the same techniques to any ten-dimensional supersymmetric solution (not necessarily involving a factor with an AdS4 or Minkowski4 metric) in type II theories. We find a system of differential equations in terms of a form describing a "generalized ISpin(7) structure". This system is equivalent to unbroken supersymmetry, in both IIA and IIB. One of the equations reproduces in one fell swoop all the pure spinors equations for four-dimensional vacua.
description: 43 pages
title: American Joint Committee on Cancer (AJCC) Staging Manual 2018 - Impact on Imaging of Head and Neck Tumours
Creators: name: Foran, Ann
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Head and neck
subject: Ear / Nose / Throat
subject: CT
subject: MR
subject: PET
subject: Staging
subject: Audit and standards
subject: Technical aspects
subject: Cancer
subject: Education and training
subject: Metastases

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The purpose of our review was to assess the impact of the updated AJCC 2018 guidelines on imaging and on the daily practice of general radiologists and neuroradiologists...
A geometric approach to the precession of compact binaries
Creators: name: Boyle, Michael
name: Owen, Robert
name: Pfeiffer, Harald P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss a geometrical method to define a preferred reference frame for precessing binary systems and the gravitational waves they emit. This minimal-rotation frame is aligned with the angular-momentum axis and fixes the rotation about that axis up to a constant angle, resulting in an essentially invariant frame. Gravitational waveforms decomposed in this frame are similarly invariant under rotations of the inertial frame and exhibit relatively smoothly varying phase. By contrast, earlier prescriptions for radiation-aligned frames induce extraneous features in the gravitational-wave phase which depend on the orientation of the inertial frame, leading to fluctuations in the frequency that may compound to many gravitational-wave cycles. We explore a simplified description of post-Newtonian approximations for precessing systems using the minimal-rotation frame, and describe the construction of analytical/numerical hybrid waveforms for such systems.
description: Minor clarifications and journal reference
title: DEPRECATED: DEVELOPMENT OF A COMPUTING AND INFORMATION SYSTEMS INFRASTRUCTURE FOR CAPM IN A COMPUTER INTEGRATED MANUFACTURING ENVIRONMENT
Creators: name: WESTON, NEIL
Publisher: name: University of Plymouth
Year: 1991

description: The continuing failure of many CAPM implementations in the UK, despite the availability of a large and growing supply of software, gave rise to concern within the academic and user community and highlighted a need for a concerted research effort into the causes of failure. The Science and Engineering Research Council responded to this need by sponsoring a major research initiative into CAPM through its ACME (Application of Computers to Manufacturing Engineering) Directorate. The findings reported in this thesis result from the work carried out for ACME by the author as part of the joint Polytechnic South West/Sheffield Business School research programme under the direction of professors D R Hughes, I S Smith and D R Tranfield. The extent of the work included surveying a large number of manufacturing firms, interviewing suppliers of CAPM systems and services and analysing the data collected from these activities. This resulted in the identification of a number of causes of CAPM failure. A major component of the work then concerned developing an appropriate CAPM design and implementation methodology to address the issues and concerns identified as significant. A clear distinction is made in the thesis between the work carried out by the author as part of the ACME team and the author's own work. The results from the joint effort of the research team are explained together with the author's unique contribution. The concepts of operational performance envelopes and contextually bound computing and information systems infrastructures provide the theoretical foundation to the author's approach. These concepts are utilised within an approach developed by the author which offers a wider ranging approach than is currently available. Existing approaches focus on the development of single point solutions and aim to address particular and current problems only. Such solutions are inappropriate where requirements are subject to rapid and frequent change, as in the manufacturing sector. In contrast the author's approach focuses on the development of a computing and information systems capability with the necessary flexibility to accommodate changing requirements and priorities. In this way a more resilient solution is obtainable.
title: Neuromyelitis optica and Multiple sclerosis: Diagnostic Dilemma Decoded
Creators: name: Jeswani, Harsha
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education and training
subject: Education
subject: MR
subject: Neuroradiology spine
subject: Neuroradiology brain

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To provide an update on imaging features of neuromyelitis optica (NMO) and multiple sclerosis (MS) on magnetic resonance imaging. Differentiating these conditions in a tabulated format to serve as a quick radiological review for...
Dynamical model for the full stretching curve of DNA
Creators: name: Fiasconaro, Alessandro
name: falo, Fernando
Publisher: name: arXiv
Year: 2012
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We present a phenomenological dynamical model able to describe the stretching features of the curve of DNA length vs applied force. As concerns the chain, the model is based on the discrete wormlike chain model with elastic modifications, which properly describes the elongation features at low and intermediate forces. The dynamics is developed under a double-well potential with a linear term, which, at high forces, accounts for the narrow transition present in the DNA elongation (overstretching). A quite good agreement between simulation and experiment is obtained.
description: 4 pages, 5 figures
title: Feasibility and utility of arterial spin labelling perfusion in neuro-oncology MRI protocols in the UK.
Creators: name: Markus, Julia
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Neuroradiology brain
subject: Oncology
subject: MR-Diffusion/Perfusion
subject: MR
subject: Imaging sequences
subject: Technical aspects
subject: Tissue characterisation
subject: Neoplasia

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Examine the feasibility of introducing Arterial Spin Labelling Perfusion techniques to neuro-oncology protocols in a large tertiary MRI centre with a large neuro-oncollogy work load. To highlight the ease of obtaining ASL-PWIs with no offline...
On the Curvature and Phase Structure of Molecular Vibrations: An Ω-Model Perspective
Creators: name: Brent Jarvis
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Physics
subject: Physics
subject: Physics/methods
subject: Nuclear physics
subject: Particle physics
subject: Atomic physics
subject: Nuclear physics
subject: Quantum physics
subject: Plasma physics
subject: Theoretical physics

description: We present a unified geometric model of molecular vibration based on the Ω-Model, in which dual-frequency torsional curvature replaces classical potential energy surfaces. By treating longitudinal and poloidal oscillations as curvature-based dynamics and incorporating resonance, bond order, and complex phase interactions, we predict vibrational energies from first principles. Crucially, we show that vibrational energy in π-bonded systems can manifest as pure torsional phase curvature—an imaginary quantity in the Ω-formalism—which corresponds to non-dissipative, IR-inactive energy storage. We demonstrate accurate predictions for H2 and CH, partial predictions for CO, and uncover a new curvature matrix structure that bridges torsional and longitudinal modes. This framework offers a natural geometric explanation for molecular resonance, zero-point energy, and vibrational anharmonicity, and may serve as a foundational bridge between curvature geometry and quantum field theory in molecules.
title: Abdominal cocoon: An elusive entity
Creators: name: Jeswani, Harsha
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Education and training
subject: Acute
subject: Education
subject: CT
subject: Small bowel
subject: Peritoneum
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To describe the computed tomographic findings in cases of sclerosing encapsulating peritonitis. Discuss various etiologies which can cause sclerosing encapsulating...
Hadronic Equation of State and Speed of Sound in Thermal and Dense Medium
Creators: name: Tawfik, Abdel Nasser
name: Magdy, Hend
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The equation of state $p(ε)$ and speed of sound squared $c_s^2$ are studied in grand canonical ensemble of all hadron resonances having masses $\leq 2\,$GeV. This large ensemble is divided into strange and non-strange hadron resonances and furthermore to pionic, bosonic and femionic sectors. It is found that the pions represent the main contributors to $c_s^2$ and other thermodynamic quantities including the equation of state $p(ε)$ at low temperatures. At high temperatures, the main contributions are added in by the massive hadron resonances. The speed of sound squared can be calculated from the derivative of pressure with respect to the energy density, $\partial p/\partial ε$, or from the entropy-specific heat ratio, $s/c_v$. It is concluded that the physics of these two expressions is not necessarily identical. They are distinguishable below and above the critical temperature $T_c$. This behavior is observed at vanishing and finite chemical potential. At high temperatures, both expressions get very close to each other and both of them approach the asymptotic value, $1/3$. In the HRG results, which are only valid below $T_c$, the difference decreases with increasing the temperature and almost vanishes near $T_c$. It is concluded that the HRG model can very well reproduce the results of the lattice quantum chromodynamics (QCD) of $\partial p/\partial ε$ and $s/c_v$, especially at finite chemical potential. In light of this, energy fluctuations and other collective phenomena associated with the specific heat might be present in the HRG model. At fixed temperatures, it is found that $c_s^2$ is not sensitive to the chemical potential.
description: 19 pages, 6 figures with 13 eps graphs
title: Germ cell tumour presentation at different disease stages using a variety of imaging modalities.
Creators: name: Pantelidou, Maria
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cancer
subject: Education
subject: Ultrasound
subject: CT
subject: Oncology

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To describe the different primary sites that germ cell tumours present in including testicular, ovarian and extragonadal sites and their radiological appearances using different modalities, such as ultrasound, CT, MRI and Nuclear Medicine studies....
title: DEPRECATED: 'Consuming children' : a sociological analysis of children's relationship with contempory consumer culture
Creators: name: Evans, Julie Marianne
Publisher: name: University of Plymouth
Year: 2002
Subjects: subject: Consumption
subject: Sociology
subject: FOS: Sociology
subject: Human Services
subject: Psychology
subject: FOS: Psychology
subject: Commerce

description: The aim of this thesis is to identify and understand children's relationships with the world of consumption. Through the children's own narratives a picture emerges of the mediating properties of consumer goods in their wider social and personal friendships. Living in what could be described as a materially divided society this project explores how children make sense of those inequalities and what their experiences are in understanding their own socio-economic position compared to others and how it impacts on their relationships to consumer culture. A particular concern is that such relationships may be more complicated than they seem on the surface and that class has an especially significant impact on children's experience of consumption. The contention here is that the impact of material inequality on an individual's capacity to consume is in the context of the sociology of both consumption and childhood remains largely under-explored. Creative child-centred data collection methods were therefore used in order to prioritise children's 'voices' as a means of understanding the impact of consumption on their lives. This data was further complemented by interviews with parents and in this context parents' management of familial household budgets emerged as having a particularly important influence in determining the role of consumption as a resource in the dynamic that exists between children, their parents and friendship groups. The evidence collected here suggests that the role of consumer goods is central to children's participation in what passes for a 'non-nal' life in contemporary consumer society. Both the children and their parents are acutely aware of this and as such go to inordinate lengths to ensure their children are able to have the appropriate signifiers of inclusion in their peer group networks. Material possessions appear to provide a currency with which children trade, whilst offering them inclusion within their wider personal and social networks. This research has given 'consuming children' a forum within which they can articulate what role consumer goods occupy in their lives on a day-to-day basis and what it means to children if they are unable to participate fully in the society in which they live.
title: DEPRECATED: AN APPROACH TO MACHINE DEVELOPMENT OF MUSICAL ONTOGENY
Creators: name: GIMENES, MARCELO
Publisher: name: University of Plymouth
Year: 2008

description: This Thesis pursues three main objectives: (i) to use computational modelling to explore how music is perceived, cognitively processed and created by human beings; (ii) to explore interactive musical systems as a method to model and achieve the transmission of musical influence in artificial worlds and between humans and machines; and (iii) to experiment with artificial and alternative developmental musical routes in order to observe the evolution of musical styles. In order to achieve these objectives, this Thesis introduces a new paradigm for the design of computer interactive musical systems called the Ontomemetical Model of Music Evolution - OMME, which includes the fields of musical ontogenesis and memetlcs. OMME-based systems are designed to artificially explore the evolution of music centred on human perceptive and cognitive faculties. The potential of the OMME is illustrated with two interactive musical systems, the Rhythmic Meme Generator (RGeme) and the Interactive Musical Environments (iMe). which have been tested in a series of laboratory experiments and live performances. The introduction to the OMME is preceded by an extensive and critical overview of the state of the art computer models that explore musical creativity and interactivity, in addition to a systematic exposition of the major issues involved in the design and implementation of these systems. This Thesis also proposes innovative solutions for (i) the representation of musical streams based on perceptive features, (ii) music segmentation, (iii) a memory-based music model, (iv) the measure of distance between musical styles, and (v) an impi*ovisation-based creative model.
The probability that a pair of elements of a finite group are conjugate
Creators: name: Blackburn, Simon R.
name: Britnell, John R.
name: Wildon, Mark
Publisher: name: arXiv
Year: 2011
Subjects: subject: Group Theory (math.GR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 20D60, 20B30, 20E45 (Primary) 05A05, 05A16 (Secondary)

description: Let $G$ be a finite group, and let $κ(G)$ be the probability that elements $g$, $h\in G$ are conjugate, when $g$ and $h$ are chosen independently and uniformly at random. The paper classifies those groups $G$ such that $κ(G) \geq 1/4$, and shows that $G$ is abelian whenever $κ(G)|G| < 7/4$. It is also shown that $κ(G)|G|$ depends only on the isoclinism class of $G$. Specialising to the symmetric group $S_n$, the paper shows that $κ(S_n) \leq C/n^2$ for an explicitly determined constant $C$. This bound leads to an elementary proof of a result of Flajolet \emph{et al}, that $κ(S_n) \sim A/n^2$ as $n\rightarrow \infty$ for some constant $A$. The same techniques provide analogous results for $ρ(S_n)$, the probability that two elements of the symmetric group have conjugates that commute.
description: 34 pages, corrected version, to appear in Journal of the London Mathematical Society
Visual non-rigid object tracking in dynamic environments
Creators: name: Firouzi, Hadi
Publisher: name: University of British Columbia
Year: 2013

description: This research presents machine vision techniques to track an object of interest visually in an image sequence in which the target appearance, scale, orientation, shape, and position may significantly change over time. The images are captured using a non-stationary camera in a dynamic environment in a gray-scale format, and the initial location of the target is given. The contributions of this thesis include the introduction of two robust object tracking techniques and an adaptive similarity measure which can significantly improve the performance of visual tracking. In the first technique, the target is initially partitioned into several sub-regions, and subsequently each sub-region is represented by two distinct adaptive templates namely immediate and delayed templates. At every tracking step, the translational transformation of each sub-region is preliminarily estimated using the immediate template by a multi-start gradient-based search, and then the delayed template is employed to correct the estimation. After this two-step optimization, the target is tracked by robust fusion of the new sub-region locations. From the experiments, the proposed tracker is more robust against appearance variance and occlusion in comparison with the traditional trackers. Similarly, in the second technique the target is represented by two heterogeneous Gaussian-based templates which models both short- and long-term changes in the target appearance. The target localization of the latter technique features an interactive multi-start optimization that takes into account generic transformations using a combination of sampling- and gradient-based algorithms in a probabilistic framework. Unlike the two-step optimization of the first method, the templates are used to find the best location of the target, simultaneously. This approach further increases both the efficiency and accuracy of the proposed tracker. Lastly, an adaptive metric to estimate the similarity between the target model and new images is proposed. In this work, a weighted L2-norm is used to calculate the target similarity measure. A histogram-based classifier is learned on-line to categorize the L2-norm error into three classes which subsequently specify a weight to each L2-norm error. The inclusion of the proposed similarity measure can remarkably improve the robustness of visual tracking against severe and long-term occlusion.
The BF theory as an electric Julia-Toulouse condensate
Creators: name: Grigorio, L. S.
name: Guimaraes, M. S.
name: Rougemont, R.
name: Wotzasek, C.
name: Zarro, C. A. D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Julia-Toulouse mechanism is used to show that the topological Abelian BF term may be induced by the condensation of electric charges. As an application we discuss the subtle question of including consistently magnetic defects into the Maxwell-BF theory in a way to avoid the usual problems of current conservation, charge quantization, Elitzur's theorem violation and the reality of the Dirac brane, produced by the non-minimal coupling. We also discuss a new way of obtaining the Dirac's veto, which is based on the so-called Dirac brane symmetry.
description: 5 pages, reorganized and shortened version accepted for publication in the Brief Reports section of Physical Review D
Resveratrol mitigates oxidative stress and suppresses HBV replication via modulation of the SIRT1-Nrf2 pathway in liver cells
Creators: name: Yang, Gang
name: Li, Tao
name: Zhang, Xiong
name: Wang, Lin
name: Li, Teng
name: Zhang, Xin
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Hepatitis B virus (HBV) infection induces oxidative stress, contributing to liver injury and promoting viral replication through elevated reactive oxygen species (ROS). Resveratrol (RES), a polyphenolic antioxidant, has shown antioxidant and antiviral properties, but its role in modulating the SIRT1-Nrf2 axis under oxidative stress remains unclear. This study investigates RES’s effects on oxidative stress pathways and HBV replication, emphasizing SIRT1-Nrf2 regulation as a potential therapeutic target. LO-2 and HepG2 cells were treated with H₂O₂ (300–1000 μM) with or without RES (50 μM). Cell viability (MTT), SIRT1/pNrf2 expression, ROS/MDA levels, and HBV markers (HBc protein, HBV DNA) were analyzed. Confocal microscopy assessed SIRT1 and pNrf2 localization. RES improved cell viability, upregulated SIRT1, promoted Nrf2 phosphorylation/nuclear translocation, and enhanced antioxidant defenses. It significantly reduced ROS/MDA levels and suppressed HBV replication by decreasing HBc protein and HBV DNA (p < 0.05), indicating an oxidative stress-dependent antiviral effect. RES mitigates oxidative stress and suppresses HBV replication via SIRT1-Nrf2 modulation, offering a novel therapeutic strategy for HBV-related liver damage.
69581: Recruiting March of the Oxfordshire Women's Land Army (video)
Creators: name: Project Team, Oxford At War
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: (Made available through the First World War Poetry Digital Archive) Recruiting march and presentation to Princess Mary of the Women's Land Army, Oxford, 1917-1918. The march begins in St Giles with women entering the enrolment hut by the Martyrs' Memorial. The procession goes down the Cornmarket, through Carfax and into Broad Street. Some of the women are in uniform, and the procession includes a steam tractor. Mr R E Prothero, Minister of Agriculture, leads local city and university officials to Trinity College gardens, where Princess Mary presents awards to the Land Girls. One of the girls shows two baby lambs. The awards continue while the members of the council and the university, one in a Bath chair, watch.
New Physics in Gamma_12^s: (sbar b) (taubar tau) Operators
Creators: name: Bobeth, Christoph
name: Haisch, Ulrich
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements performed at the Tevatron of both the like-sign dimuon charge asymmetry in B_d,s-meson samples and the mixing-induced CP asymmetry in B_s -> J/psi phi depart from their standard model (SM) predictions. This could be an indication for new CP phases in Delta B = 2 transitions, preferentially in B_s-Bbar_s mixing. The experimental situation, however, remained inconclusive, as it favored values of the element Gamma_12^s of the decay matrix in the B_s-meson system that are notably different from the SM expectation, suggesting the presence of new physics in the Delta B = 1 sector as well. The very recent LHCb measurements of B_s -> J/psi phi and B_s -> J/psi f_0, which do not find any evidence for a new-physics phase in the element M_12^s of the mass matrix, point into this direction as well. In this article, we explore the potential size of non-standard effects in Gamma_12^s stemming from dimension-six operators with flavor content (sbar b) (taubar tau). We show that since the existing constraints imposed by tree- and loop-level mediated B_d,s-meson decays are quite loose, absorptive new physics of this type can in part explain the current data. Our model-independent conclusions are finally contrasted with explicit analyses of the new-physics effects in B_s-Bbar_s mixing that can arise from leptoquarks or Z' bosons.
description: 43 pages, 9 figures, 3 tables; v4: Eqs. (60), (64), (65) and (E7) corrected; conclusions unchanged
Quantum Limits of Eisenstein Series and Scattering states
Creators: name: Petridis, Yiannis N.
name: Raulf, Nicole
name: Risager, Morten S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F72 (Primary) 58G25, 35P25 (Secondary)

description: We identify the quantum limits of scattering states for the modular surface. This is obtained through the study of quantum measures of non-holomorphic Eisenstein series away from the critical line. We provide a range of stability for the quantum unique ergodicity theorem of Luo and Sarnak.
description: 12 pages, Corrects a typo and its ramification from previous version
Code criminel de l'empereur Charles V vulgairement appellé la Caroline contenant les loix qui sont suivies dans les jurisdictions criminelles de l'Empire et à l'usage des conseils de guerre des troupes suisses.
Creators: name: Heiliges Römisches Reich Deutscher Nation
Publisher: name: de l'imprimerie de Claude Simon (A Paris)
Year: 1734
Subjects: subject: Droit

description: Le code est accompagné de commentaires de F. A. Vogel, qui signe l'épitre dédicatoire
description: Reliure 18è siècle
description: Ex-libris manuscrit "Ex libris Dufour"
Temperature Induced Spin Density Wave in Magnetic Doped Topological Insulators
Creators: name: Lasia, Martha
name: Brey, Luis
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the magnetic properties of topological insulators doped with isoelectronic magnetic impurities. We obtain that at zero temperature the impurities order ferromagnetically, but when raising the temperature the topological insulator undergoes a first order phase transition to a spin density wave phase before the system reaches the paramagnetic phase. The origin of this phase is the non-trivial dependence of the topological insulator spin susceptibility on the momentum. We analyze the coupling of the non-uniform magnetic phase with the Dirac electronic system that occurs at the surfaces of the topological insulators.
description: 7 pages. Major changes. the message has been revised and expanded
title: Cinema plays history : National Socialism and the Holocaust in counterfactual historical films of the twenty-first century
Creators: name: Melchers, Alma Louise Sophia
Publisher: name: University of St Andrews
publisherIdentifier: https://ror.org/02wn5qz54
publisherIdentifierScheme: ROR
Year: 2018

description: Inspired by 2009 pastiche 'Inglourious Basterds' (US/DE), my research presents counterfactual historical film, firstly, as a marginalised type of film: the 2000s and 2010s have seen an abundance of overtly fictional films which do not intend to represent the past but nonetheless playfully refer to imageries of National Socialist and Holocaust history. These films have so far been neglected by historical film studies which, despite a consensus not to judge films according to their factual accuracy, tend to focus on genres close to historiography. My research considers as historical films the counterfactual parodies 'Churchill: The Hollywood Years' (GB 2004) and 'Mein Führer: Die wirklich wahrste Wahrheit über Adolf Hitler' (DE 2007), as well as 'Inglourious Basterds' and, in a brief conclusion, Nazi zombie films. In this sense, counterfactual historical film is, secondly, a research approach which suggests reconfiguring academic definitions of the field of history and film and historical film. Assuming that historical film never visualises past reality but engages with a history that is always already medialised, I propose that the above films despite their counterfactual plots embark on a visual historical discourse, and what is more reflect upon cinema and history in their own enlightening ways. My analyses show how twenty-first century counterfactual historical films revise Nazi and Holocaust visual history, and how they describe National Socialist history as visually constructed and historical Nazism as an eclectic amalgamation drawing on fictional as well as factual media sources. In regard to the present, they explore tensions between popular and academic culture through the dissolving binaries of fiction film and historiographical fact, and propose to recognise the reciprocity of media representation and actual past as an object of research in its own right. My research demonstrates the value of cinema’s playful engagement with history as a potential contribution to the theory and practise of historical film studies.
The Role of Inverse Compton Scattering in Solar Coronal Hard X-ray and Gamma-ray Sources
Creators: name: Chen, Bin
name: Bastian, Timothy S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Coronal hard X-ray (HXR) and continuum gamma-ray sources associated with the impulsive phase of solar flares have been the subject of renewed interest in recent years. They have been interpreted in terms of thin-target, nonthermal bremsstrahlung emission. This interpretation has led to rather extreme physical requirements in some cases. For example, in one case, essentially all of the electrons in the source must be accelerated to nonthermal energies to account for the coronal HXR source. In other cases, the extremely hard photon spectra of the coronal continuum gamma-ray emission suggest that the low energy cutoff of the electron energy distribution lies in the MeV energy range. Here we consider the role of inverse Compton scattering (ICS) as an alternate emission mechanism in both the ultra- and mildly relativistic regimes. It is known that relativistic electrons are produced during powerful flares; these are capable of up-scattering soft photospheric photons to HXR and gamma-ray energies. Previously overlooked is the fact that mildly relativistic electrons, generally produced in much greater numbers in flares of all sizes, can up-scatter EUV/SXR photons to HXR energies. We also explore ICS on anisotropic electron distributions and show that the resulting emission can be significantly enhanced over an isotropic electron distribution for favorable viewing geometries. We briefly review results from bremsstrahlung emission and reconsider circumstances under which nonthermal bremsstrahlung or ICS would be favored. Finally, we consider a selection of coronal HXR and gamma-ray events and find that in some cases the ICS is a viable alternative emission mechanism.
Bayesian Gaussian Copula Factor Models for Mixed Data
Creators: name: Murray, Jared S.
name: Dunson, David B.
name: Carin, Lawrence
name: Lucas, Joseph E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Gaussian factor models have proven widely useful for parsimoniously characterizing dependence in multivariate data. There is a rich literature on their extension to mixed categorical and continuous variables, using latent Gaussian variables or through generalized latent trait models acommodating measurements in the exponential family. However, when generalizing to non-Gaussian measured variables the latent variables typically influence both the dependence structure and the form of the marginal distributions, complicating interpretation and introducing artifacts. To address this problem we propose a novel class of Bayesian Gaussian copula factor models which decouple the latent factors from the marginal distributions. A semiparametric specification for the marginals based on the extended rank likelihood yields straightforward implementation and substantial computational gains, critical for scaling to high-dimensional applications. We provide new theoretical and empirical justifications for using this likelihood in Bayesian inference. We propose new default priors for the factor loadings and develop efficient parameter-expanded Gibbs sampling for posterior computation. The methods are evaluated through simulations and applied to a dataset in political science. The methods in this paper are implemented in the R package bfa.
description: To appear in JASA Theory & Methods. This revision corrects the simulation study in the previous version (and adds another), adds new figures and edits some of the previous figures, corrects some typographical errors and has been edited for style and length