cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hawking Radiation of a Quantum Black Hole in an Inflationary Universe
Creators: name: Huang, Wung-Hong
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The quantum stress-energy tensor of a massless scalar field propagating in the two-dimensional Vaidya-de Sitter metric, which describes a classical model spacetime for a dynamical evaporating black hole in an inflationary universe, is analyzed. We present a possible way to obtain the Hawking radiation terms for the model with arbitrary functions of mass. It is used to see how the expansion of universe will affect the dynamical process of black hole evaporation. The results show that the cosmological inflation has an inclination to depress the black hole evaporation. However, if the cosmological constant is sufficiently large then the back-reaction effect has the inclination to increase the black hole evaporation. We also present a simple method to show that it will always produce a divergent flux of outgoing radiation along the Cauchy horizon where the curvature is a finite value. This means that the Hawking radiation will be very large in there and shall modify the classical spacetime drastically. Therefore the black hole evaporation cannot be discussed self-consistently on the classical Vaidya-type spacetime. Our method can also be applied to analyze the quantum stress-energy tensor in the more general Vaidya-type spacetimes.
description: Proper boundary will lead to anti-evaporation of schwarzschild-de Sitter black holes, as corrected in Class. Quantum Grav. 11 (1994) 283
Whose data is it, by the way?
Creators: name: Nakhaie, Siamak
Publisher: name: Zenodo
Year: 2025
Subjects: Intellectual Property Rights
Research Data Management
Copyright
Legal Aspects
FAIRmat
Love Data Week 2025

description: This Coffee Lecture was presented on February 10, during Love Data Week 2025. Having researchers as the target group, this presentation gave a brief introduction to data ownership, an overview of relevant intellectual property rights (IPRs), and essential copyright principles and their implication for research in Germany. The contents of the talk were based on the FAIRmat Guide to Legal Aspects in Research Data Management (DOI: 10.5281/zenodo.11083303).
description: This work is funded by the NFDI consortium FAIRmat - Deutsche Forschungsgemeinschaft (DFG) - Project 460197019
Many electron theory of 1/f-noise in hopping conductivity
Creators: name: Burin, A. L.
name: Shklovskii, B. I.
name: Kozub, V. I.
name: Galperin, Y. M.
name: Vinokur, V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We show that $1/f$-noise in the variable range hopping regime is related to transitions of many-electrons clusters (fluctuators) between two almost degenerate states. Giant fluctuation times necessary for $1/f$-noise are provided by slow rate of simultaneous tunneling of many localized electrons and by large activation barriers for their consecutive rearrangements. The Hooge constant steeply grows with decreasing temperature because it is easier to find a slow fluctuator at lower temperatures. Our conclusions qualitatively agree with the low temperature observations of $1/f$-noise in p-type silicon and GaAs.
Anisotropic Gaussian random fields: Criteria for hitting probabilities and applications
Creators: name: Hinojosa-Calleja, Adrián
name: Sanz-Solé, Marta
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G60, 60G15, 60H15, 60H07, 60K35 (Primary), 60G22, 60G17 (Secondary)

description: We develop criteria for hitting probabilities of anisotropic Gaussian random fields with associated canonical pseudo-metric given by a class of gauge functions. This yields lower and upper bounds in terms of general notions of capacity and Hausdorff measure, respectively, therefore extending the classical estimates with the Bessel-Riesz capacity and the $γ$-dimensional Hausdorff measure. We apply the criteria to a system of linear stochastic partial differential equations driven by space-time noises that are fractional in time and either white or colored in space.
description: 41 pages
Observation of 2nd band vortex solitons in 2D photonic lattices
Creators: name: Bartal, Guy
name: Manela, Ofer
name: Cohen, Oren
name: Fleischer, Jason W.
name: Segev, Mordechai
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We demonstrate second-band bright vortex-array solitons in photonic lattices. This constitutes the first experimental observation of higher-band solitons in any 2D periodic system. These solitons possess complex intensity and phase structures, yet they can be excited by a simple highly-localized vortex-ring beam. Finally, we show that the linear diffraction of such beams exhibits preferential transport along the lattice axes.
Service Conductor: An approach to increasing safety in Nairobi's matatus
Creators: name: Yussuf, Emmanuel
name: Vane Bonareri
name: Olembo, Samuel
name: Tapper, Tuomas
name: Otten, Heike
name: Falck, Josefiina
Publisher: name: figshare
Year: 2020
Subjects: subject: 120506 Transport Planning
subject: FOS: Social and economic geography

description: Nairobi, Kenya’s capital city, is one of the most dynamic and fastest-growing of Africa’s emerging cities. Almost 50% of people in Nairobi walk because they cannot access affordable transport options, yet most roads in Nairobi do notaccount for the needs of pedestrians.According to the Nairobi Metropolitan Area Transport Authority, Nairobi is the fourth most congested city in the world, with traffic congestion estimated to cost the city over $1 billion a year.The project focuses on identifying impediments in the use of public transport in Nairobi, as increasing the use of publictransport might lead to more sustainable traffic and a less congested city. The literature review in this report shows thatone major issue around public transport in Nairobi is women facing harassment. The purpose of this research is to furtherinvestigate the issue of harassment in public transport.Based on the identified problems, this report aims at harnessing existing solutions and technology tools to develop solutions.
Exact Maxwell-Boltzmann, Bose-Einstein and Fermi-Dirac Statistics
Creators: name: Niven, Robert K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Information Theory (cs.IT)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The exact Maxwell-Boltzmann (MB), Bose-Einstein (BE) and Fermi-Dirac (FD) entropies and probabilistic distributions are derived by the combinatorial method of Boltzmann, without Stirling's approximation. The new entropy measures are explicit functions of the probability and degeneracy of each state, and the total number of entities, N. By analysis of the cost of a "binary decision", exact BE and FD statistics are shown to have profound consequences for the behaviour of quantum mechanical systems.
description: 18 pages; 6 figures; accepted for publication by Physics Letters A, 13/5/05
title: X-ray Interferometry with the Heterodyne Nearfield Speckles Technique for Beam Size Monitoring at FCC-ee
Creators: name: Götz, Alexander
Publisher: name: TU Wien
Year: 2021
Subjects: subject: Hochenergiebeschleuniger
subject: Kollisionsbeschleuniger
subject: Strahldiagnostik
subject: Future Circular Collider
subject: High energy accelerator
subject: colliders
subject: beam diagnostics
subject: Future Circular Collider

description: By recording the interference pattern between X-ray synchrotron radiation emitted by an electron beam and the tiny portion of radiation scattered by a stochastic distribution of nanoparticles, one can measure the first-order transverse coherence of the radiation. Under the conditions of applicability of the Van Cittert and Zernike theorem, the spatial coherence is linked to the transverse intensity distribution of the source, which can be used for beam diagnostics at the projected Future Circular Collider at CERN.In this work, the method is evaluated theoretically and is furthermore tested by simulating the production of the synchrotron radiation and its propagation through the involved optical elements. The method is then shown to be capable for determining the transverse beam size of the Future Circular Collider on a bunch-per-bunch basis and to be feasible with today's technology.
Older women’s narration of their experience(s) of creating voice presented through ethnoperformance
Creators: name: Terrett, Marianna
Publisher: name: University of British Columbia
Year: 2009

description: Through the process of ethnoperformance (a form of interpretive ethnography), I explore how women over seventy narrate their experiences of creating voice. If ethnoperformance is considered the fabric, then collaboration, creation of a safe environment, performative inquiry and discussion/debriefing are the essence of the fabric, the threads that when woven together create a long-lasting durable cloth. The epistemology or, how we come to know, within which the performance ethnography is co-constructed (social constructionism and qualitative inquiry, in this case performative inquiry) is found within the postmodern paradigm. The purpose for this ethnoperformative research study is to discover the multiple ways in which older women narrate their experiences of creating voice in order to co-create and coconstruct a reflexive teaching and counselling tool. This tool has the potential to create awareness and understanding of older women's experience of lacking and creating voice in order to allow for meaningful, even transforming human connections, and to empower participants, both individually and as a group, as they perform their stories of being silenced. I position myself in this collaborative research study trusting that older women are empowered when they experience meaningful learning through an interweaving of "doing, knowing, talking and creating, " (Fels & Meyer, 1997, p.80) rather than simply being talked to or talked at. My interpretations for this study are constructed from the landscape consisting of individual preworkshop conversational interviews, field notes, whole story (wholistic) and content narrative analysis of videoed workshops, journals (participants' and researcher's), and individual postworkshop conversational interviews. Having analyzed and interpreted the data from the study and met with the participants for member checks and my peers for peer checks, I have concluded that the women in my study were empowered though the performing (doing, knowing, talking and creating) of their individual stories. As well, I have outlined the group process of ethnoperformance that evolved from the six workshops and how voice is created through that process. Finally, I concluded that there were six group stories that were meaningful and common experiences to all five participants. I include the outlines for all six workshops and a discussion on how my findings relate or do not relate to current extant literature that is relevant to my research study.
Presentations during the Fourth Data Science School, Dangbo 2023
Creators: name: Atemezing, Auguste Ghislain
name: HOUNGUE, Pélagie
name: DAGBA, Théophile
name: SIDI, Habib
name: AOGA, John
name: KPONOU, Fortuné
name: HOUSSOU, Elvire
name: Lamine Ba, Mouhamadou
name: LOPEZ, Jessica
name: HOUNTONDJI, Michel
name: DZARMA, Daniel
name: BALOGOUN, Marianne
name: Ezin, Eugène
name: TIOMOKO ALI, Hafiz
name: DOSSOU, Bonaventure
name: NIKIEMA, Théodore
name: CHABI ADJOBO, Esther
name: Denakpo  F. W., Hermione
name: Lionel, AFFOGNON
name: SENOU, Rosaire
name: ABIODUN SIKIRU, ISMAEEL
name: Ahouandjinou, Arnaud
Publisher: name: Zenodo
Year: 2024

description: The presentations used during the Fourth Data Science School, Dangbo 2023. Link: https://ai4africa.github.io/DSS23/
Electronic Raman scattering in superconductors on triangle lattices
Creators: name: Wang, Jian-Bo
name: He, Xiang-Mei
name: Tan, Fei
name: Wang, Qiang-Hua
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In superconductors on triangle lattices, we show that the electronic Raman spectra in the non-resonant channel are independent of the light polarization configuration in the scattering. Therefore the light polarization configuration is no longer a judicious choice to probe the anisotropic nature of the pairing wave function (as in the case of square lattices). However, we show that the detailed energy-shift dependence of the spectrum and the effects of impurities provide useful information that can help identify the possible pairing symmetry experimentally. These results are relevant to the newly discovered Na$_x$CoO$_2\cdot y$H$_2$O superconductors.
description: 6 pages, 5 eps figures
On the Structural Stability and Optical Properties of Germanium-based Schwarzites: A Density Functional Theory Investigation
Creators: name: Tromer, Raphael M.
name: Felix, Levi C.
name: Woellner, Cristiano F.
name: Galvao, Douglas S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Since graphene was synthesized the interest for building new 2D and 3D structures based on the carbon allotropes has been growing every day. One of these 3D structures is know as carbon schwarzites. Schwarzites consist of carbon nanostructures possessing the shape of Triply-Periodic Minimal Surfaces (TPMS), which is characterized by a negative Gaussian curvature introduced by the presence of carbon rings with more than six atoms. Some examples of schwarzite families include: primitive (P), gyroid (G) and diamond (D). Previous studies considering different element species of schwarzites have investigated the mechanical, electrical and thermal properties. In this work, we investigated the stability of germanium (Ge) schwarzites using density functional theory with GGA exchange-correlation functional. We chose one structure of each family (P8bal), (G688) and (D688). It was observed that regions usually flat in carbon schwarzites acquires buckled configurations as previously observed on silicene and germanene monolayers. The investigated structures presented a semiconducting bandgap ranging from $0.13$ to $0.27$ eV. We also performed calculations of optical properties within the linear regime, where it was shown that Ge schwarzites structures absorb light from infrared to ultra-violet frequencies. Therefore, our results open new perspectives of materials that can be used in optelectronics devices application.
description: 23 pages, 6 figures
$k_T$ factorization of exclusive $B$ meson decays
Creators: name: Li, Hsiang-nan
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I review recent progress on exclusive $B$ meson decays made in the perturbative QCD approach, concentrating on the evolution of the $B$ meson wave function in $k_T$ factorization, radiative decays, polarizations in $VV$ modes, and new physics effect in $B\to ϕK_S$.
description: 14 pages, talk presented at 32nd International Conference on High Energy Physics, Aug. 16-22, 2004, Beijing, China
Accelerated planetesimal growth in self-gravitating protoplanetary discs
Creators: name: Rice, W. K. M.
name: Lodato, G.
name: Pringle, J. E.
name: Armitage, P. J.
name: Bonnell, I. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we consider the evolution of small planetesimals in marginally stable, self-gravitating protoplanetary discs. The drag force between the disc gas and the embedded planetesimals generally causes the planetesimals to drift inwards through the disc at a rate that depends on the particle size. In a marginally stable, self-gravitating disc, however, the planetesimals are significantly influenced by the non-axisymmetric spiral structures resulting from the growth of the gravitational instability. For small particles, that are strongly coupled to the disc gas, and for large particles, that have essentially decoupled from the disc gas, the effect is not particularly significant. Intermediate sized particles, which would generally have the largest radial drift rates, do, however, become significantly concentrated at the peaks of the spiral arms. These high density regions may persist for, of order, an orbital period and may attain densities comparable to that of the disc gas. Although at the end of the simulation only ~ 25 % of the planetesimal particles lie in regions of enhanced density, during the course of the simulation at least 75 % of the planetesimal particles have at some stage been in a such a region. We find that the concentration of particles in the spiral arms results in an increased collision rate, an effect that could significantly accelerate planetesimal growth. The density enhancements may also be sufficient for the growth of planetesimals through direct gravitational collapse. The interaction between small planetesimals and self-gravitating spiral structures may therefore play an important role in the formation of large planetesimals that will ultimately coagulate to form terrestrial planets or the cores of gas/ice giant planets.
description: 11 pages, 9 figures, Accepted for publication in MNRAS
Households Food Expenditures Behaviours And Socioeconomic Welfare In Italy: A Microeconometric Analysis
Creators: name: Bagarani, Massimo
name: Forleo, Maria Bonaventura
name: Zampino, Simona
name: Bagarani, Massimo
name: Forleo, Maria Bonaventura
name: Zampino, Simona
Publisher: name: Unknown
Year: 2009
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Food expenditures determinants
subject: econometric methods

description: The paper aims to investigate food expenditure behaviours and dynamics of Italian households, by identifying the main characteristics of different socioeconomic groups. In particular, the study focuses on relevant food categories in terms of healthy diet to investigate different food styles consumers. In this framework, the paper stresses the linkages between food demand behaviours and socioeconomic characteristics to give some insights on the difference between wealthy/not wealthy consumers. The analysis uses the 2000 and 2006 Consumption Expenditure Surveys at household level, implemented by the Italian National Statistical Institute (ISTAT), that provide useful data on households socioeconomic conditions and consumption expenditures dynamics on a cross-sectional population sample of about 24000 units. In a first step, the work analyses food expenditures characteristics and dynamics across different consumers classes in order to describe demand profiles. In a second step, the work directly investigates relations between socioeconomic characteristics (e.g. income, age, household size, education) and households food expenditures, by adopting advanced econometric methods, e.g. quantile regression methods, to identify existing differences across socioeconomic groups.
Market power: Modeling issues and identification problems. An investigation of selected Hungarian food chains
Creators: name: Bakucs, Lajos Zoltan
name: Ferto, Imre
name: Hockmann, Heinrich
name: Perekhozhuk, Oleksandr
name: Bakucs, Lajos Zoltan
name: Ferto, Imre
name: Hockmann, Heinrich
name: Perekhozhuk, Oleksandr
Publisher: name: Unknown
Year: 2009
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Market power
subject: Hungarian food chains.

description: In recent years increasing number of contractual arrangements in food chains are observed. There are several reasons for this phenomenon. Improving food quality often requires significant specific investments. Given high asset specificity, investors find it difficult to appropriate the returns on investment and thus have incentives to integrate. However, besides this transaction costs related argument, the ongoing vertical integration can result from structural developments in food chains which at different stages of the value chains, might hamper the proper functioning of markets. Using a unique, firm level dataset, in this paper we will focus on the latter issue. Due to its importance among various Hungarian value chains, we have selected the milk market. The objective is to conduct an analysis of market structure and pricing behaviour, with the main research question being the existence and significance of market power, its impact of factor allocation and the induced incentives for forward and backward integration. Several theoretical and empirical approaches including structural model estimation are applied in order to investigate whether market power is exploited or not. The empirical results are discussed against the background of several issues associated with the functioning of markets and a better understanding of institutional choice. Moreover, policy recommendation will be discussed.
Marketing management capabilities and price setting: An empirical analysis in the EU traditional food sector
Creators: name: Banterle, Alessandro
name: Cavaliere, Alessia
name: Stranieri, Stefanella
name: Carraresi, Laura
name: Banterle, Alessandro
name: Cavaliere, Alessia
name: Stranieri, Stefanella
name: Carraresi, Laura
Publisher: name: Unknown
Year: 2009
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: traditional food products
subject: marketing capabilities
subject: ordinal regression model.

description: In the EU, small and medium sized enterprises (SMEs), which constitute the majority of firms in the food industry, are fighting for survival as they face growing market competition from large firms (Knight, 2000). On the other hand, market opportunities for SMEs are connected to the evolution of consumer preferences toward food quality, especially for traditional food products (O’Reilly and Haines, 2004). To profit from such opportunities SMEs need to adapt their strategies, focussing on consumer requirements and improving their marketing activities. The purpose of this paper is to evaluate the marketing capabilities of SMEs producing traditional food products. Following the theoretical approach of Market Orientation (Kara et al., 2005; Jaworski and Kohli, 1993), our analysis is based on an assessment of the marketing management process (Kotler, 2004). The methodology refers to a survey made by a questionnaire published on the web, and a sample of 371 firms coming from Belgium, Italy, Spain, the Czech Republic, and Hungary. Cluster analysis was applied to find different levels of the firms’ market orientation. Moreover we used an ordinal regression model to explain the relationships between the ability of firms to influence the price and the variables affecting marketing management capability. The results revealed a certain lack of appropriate skills in the analysed firms’ marketing management, confirming literature evidence concerning SMEs. Nevertheless, cluster analysis outlined a group of firms that represent 40% of the sample, and these have good marketing capabilities and are market oriented. In addition, the firms show poor ability to influence price.
An exploration of international challenges facing wine sector in Spain
Creators: name: Bardaji, Isabel
name: Mili, Samir
name: Bardaji, Isabel
name: Mili, Samir
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: wine markets
subject: export prospects
subject: export strategies
subject: Spain.

description: International competitiveness of Spanish and European wines is faced by growing supply, decreasing domestic demand, declining public support, and rising competition from New World producers. Resolving the wine competitiveness crisis will require restructuring processes in production and innovative strategies in trade, particularly external trade. The purpose of this paper is to explore main current and future developments affecting the global wine market and their implications from a Spanish expert viewpoint. After identifying the world wine market’s main features and conditioning regulatory factors, a prospective analysis of international trade and its expected effects on export strategies of the Spanish wine operators is carried out, using a two-stage surveying process accomplished with a representative expert group from different professional backgrounds. Broadly, results indicate that while several tendencies experienced over the last decade will be maintained and/or intensified during the coming years, the major drivers of wine trade and competitiveness will increasingly relate to the role of emerging consumer countries, quality and demand-driven attributes, product differentiation and promotional marketing.
Optical properties of 1D photonic crystals based on multiple-quantum-well structures
Creators: name: Erementchouk, M. V.
name: Deych, L. I.
name: Lisyansky, A. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A general approach to the analysis of optical properties of photonic crystals based on multiple-quantum-well structures is developed. The effect of the polarization state and a non-perpendicular incidence of the electromagnetic wave is taken into account by introduction of an effective excitonic susceptibility and an effective optical width of the quantum wells. This approach is applied to consideration of optical properties of structures with a pre-engineered break of the translational symmetry. It is shown, in particular, that a layer with different exciton frequency placed at the middle of an MQW structure leads to appearance of a resonance suppression of the reflection.
description: 9 pages, 3 figures, submitted to PRE
Service Conductor: An approach to increasing safety in Nairobi's matatus
Creators: name: Yussuf, Emmanuel
name: Vane Bonareri
name: Olembo, Samuel
name: Tapper, Tuomas
name: Otten, Heike
name: Falck, Josefiina
Publisher: name: figshare
Year: 2020
Subjects: subject: 120506 Transport Planning
subject: FOS: Social and economic geography

description: Nairobi, Kenya’s capital city, is one of the most dynamic and fastest-growing of Africa’s emerging cities. Almost 50% ofpeople in Nairobi walk because they cannot access affordable transport options, yet most roads in Nairobi do notaccount for the needs of pedestrians (Maherali & Adegboye, 2019).According to the Nairobi Metropolitan Area Transport Authority, Nairobi is the fourth most congested city in the world, with traffic congestion estimated to cost thecity over $1 billion a year. Minibuses called matatus are the most popular means of transportation, which is why this project mostly focuses on the matatu industry.The project focuses on identifying impediments in the use of public transport in Nairobi, as increasing the use of publictransport might lead to more sustainable traffic and a less congested city. The literature review in this report shows thatone major issue around public transport in Nairobi is women facing harassment. The purpose of this research is to furtherinvestigate the issue of harassment in public transport.Based on the identified problems, this project then aims at harnessing existing solutions and technology tools to develop solutions.
Competing orders and inter-layer tunnelling in cuprate superconductors: A finite temperature Landau theory
Creators: name: Wu, Jian-Bao
name: Pei, Ming-Xu
name: Wang, Qiang-Hua
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose a finite temperature Landau theory that describes competing orders and interlayer tunneling in cuprate superconductors as an important extension to a corresponding theory at zero temperature [Nature {\bf 428}, 53 (2004)], where the superconducting transition temperature $T_c$ is defined in three possible ways as a function of the zero temperature order parameter. For given parameters, our theory determines $T_c$ without any ambiguity. In mono- and double-layer systems we discuss the relation between zero temperature order parameter and the associated transition temperature in the presence of competing orders, and draw a connection to the puzzling experimental fact that the pseudo-gap temperature is much higher than the corresponding energy scale near optimum doping. Applying the theory to multi-layer systems, we calculate the layer-number dependence of $T_c$. In a reasonable parameter space the result turns out to be in agreement with experiments.
description: 5 pages, 3 figures
The meaning of weight loss for women
Creators: name: Conrad, Danielle Lara
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of the current study was to examine the experiences of women who lost a significant amount of weight by following a safe and healthy weight loss program. Participants for the study were eight women, aged between 31 and 51. Participants selfidentified what constituted a significant amount of weight, and this varied for each participant. Research suggests that significant weight loss has an impact on an individual's body image and self-concept. The impetus for this study stemmed from the author's belief that significant weight loss is a psychological, as well as a physical process, and that some individuals could benefit from counselling and support throughout this process. The current study explored how the experience of weight loss impacted each individual's life. Participant interviews were analysed using a categorical-content, or thematic analysis of the content of participants' narratives, to uncover commonalities among participants' experiences. Results indicated that the findings could be grouped into five main areas: Conscious shift in lifestyle change, changes and shifts in relationships, the influence of social commentary, self perception with changing body size, and struggles with weight loss and disordered eating. Results offered support for various forms of counselling throughout the weight loss journey, including individual, couples, and group counselling.
An in silico simulation of flow mediated dilation reveals that blood pressure and other factors may influence the response independent of endothelial function - Supporting information
Creators: name: Weiwei Jin
name: Chowienczyk, Philip
name: Alastruey, Jordi
Publisher: name: Zenodo
Year: 2020
Subjects: Flow-induced dilation
Endothelial function
Haemodynamics
Computer-based model

description: This document contains a couple of tables and several figures that are auxiliary to the main content of the article 'An in silico simulation of flow mediated dilation reveals that blood pressure and other factors may influence the response independent of endothelial function' published in American Journal of Physiology: Am J Physiol Heart Circ Physiol 318: H1337–H1345, 2020 (https://journals.physiology.org/doi/full/10.1152/ajpheart.00703.2019).
On surfaces of general type with $p_g=q=1, K^2=3$
Creators: name: Polizzi, Francesco
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J29, 14J10, 14J26

description: The moduli space $\mathscr{M}$ of surfaces of general type with $p_g=q=1, K^2=g=3$ (where $g$ is the genus of the Albanese fibration) was constructed by Catanese and Ciliberto in \cite{CaCi93}. In this paper we characterize the subvariety $\mathscr{M}_2 \subset \mathscr{M}$ corresponding to surfaces containing a genus 2 pencil, and moreover we show that there exists a non-empty, dense subset $\mathscr{M}^0 \subset \mathscr{M}$ which parametrizes isomorphism classes of surfaces with birational bicanonical map.
description: 35 pages. To appear in Collectanea Mathematica
Erlangen Program at Large-1: Geometry of Invariants
Creators: name: Kisil, Vladimir V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 30G35, 22E46, 30F45, 32F45

description: This paper presents geometrical foundation for a systematic treatment of three main (elliptic, parabolic and hyperbolic) types of analytic function theories based on the representation theory of SL(2,R) group. We describe here geometries of corresponding domains. The principal role is played by Clifford algebras of matching types. In this paper we also generalise the Fillmore-Springer-Cnops construction which describes cycles as points in the extended space. This allows to consider many algebraic and geometric invariants of cycles within the Erlangen program approach. For an easy-reading introduction see arXiv:math/0607387. An outline of the whole approach is given in arXiv:1006.2115.
description: AMS-LaTeX, 47 p, 80 PS graphics in 19 figures; v2: minor corrections v3: a substantial revision; v4 & v5: small improvements; v6: revised sections on lengths, infinitesimal cycles, parabolic Cayley transform; v7, v8 & v9: numerous minor improvements and updates; v10: the final version published in SIGMA; v11: the reference to Schwerdtfeger's book is added
The current situation of EU’s food chain
Creators: name: Bartha, Andrea
name: Balogh, Viktoria
name: Nabradi, Andras
name: Bartha, Andrea
name: Balogh, Viktoria
name: Nabradi, Andras
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: food chain
subject: demand and supply
subject: retirements
subject: consumer
subject: foodstuff’s price

description: The sharp fluctuations in agricultural commodity and food prices at a time of great uncertainty about the economic outlook illustrate the need to improve the functioning of the European food supply chain with a view to enhancing its efficiency and competitiveness. Better regulation and ensuring a vigorous and coherent enforcement of competition and consumer protection rules will contribute to limiting price increases for the benefit of European consumers, in particular lower income households. Moreover, it will also help overcome the present fragmentation of the food supply chain and remove artificial entry barriers for producers, which will help European consumers benefit from the widest possible choice of quality food products. Additionally, this could help rebalancing the bargaining power in the food supply chain. Global demand and supply developments have been one of the main determinants of the rapid increase in food prices observed. Nevertheless, problems in the functioning of the food supply chain, either in terms of the degree of competition or concerning regulation may have played an important role as well. In the present economic conditions, it is therefore particularly important to analyse how to improve the functioning of the food supply chain and, in particular, to better understand the transmission mechanisms linking commodity prices with producer and consumer prices. This would help identify appropriate measures in support of the consumer's purchasing power and the competitiveness of the sectors involved. The food supply chain connects three economically important sectors: the agricultural sector, the food processing industry and the distribution sectors. These sectors account for 6% of EU value added and 12% of EU employment. As the food processing industry and the distribution sectors have many interactions with other sectors, market malfunctioning along the food supply chain can have significant repercussions. The slow productivity growth in these sectors in comparison with the US indicates that there is room for efficiency improvements.
Inhomogeneous phases in the quark-meson model with explicit chiral-symmetry breaking
Creators: name: Buballa, Michael
name: Carignano, Stefano
name: Kurth, Lennart
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the existence of inhomogeneous chiral phases in the quark-meson model with explicit chiral-symmetry breaking. We find that the inhomogeneous region shrinks with increasing pion masses but survives for the physical value of m_pi. The instability towards inhomogeneous matter occurs in the scalar channel, while pseudoscalar modes are disfavored.
description: 14 pages, 5 figures, contains ancillary files with plot data; v2: figures and typos corrected, corresponds to published version in the EPJ ST Special Issue: Strong Correlations in Dense Matter Physics
RELATIONSHIP BETWEEN MITOCHONDRIAL DYSFUNCTION AND NEURODEGENERATIVE PROCESSES
Creators: name: Musurmonova, Guzaloy
name: Eshankulova, Zebiniso
name: Ismoilov, Sherali
name: Faizullaeva, Ma'suda
name: Kasimov, Arslanbek
Publisher: name: Zenodo
Year: 2025

description: Neurodegenerative diseases are a group of progressive pathological conditions characterized by the selective death of certain populations of neurons, which leads to the development of specific neurological and cognitive disorders. In recent decades, convincing evidence has been accumulated that mitochondrial dysfunction plays a central role in the pathogenesis of these diseases, acting both as a primary pathogenetic mechanism and an important modulator of the progression of neurodegenerative processes.
Fidelity of time-bin entangled multi-photon states from a quantum emitter
Creators: name: Tiurev, Konstantin
name: Mirambell, Pol Llopart
name: Lauritzen, Mikkel Bloch
name: Appel, Martin Hayhurst
name: Tiranov, Alexey
name: Lodahl, Peter
name: Sørensen, Anders Søndberg
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We devise a mathematical framework for assessing the fidelity of multi-photon entangled states generated by a single solid-state quantum emitter, such as a quantum dot or a nitrogen-vacancy center. Within this formalism, we theoretically study the role of imperfections present in real systems on the generation of time-bin encoded Greenberger-Horne-Zeilinger and one-dimensional cluster states. We consider both fundamental limitations, such as the effect of phonon-induced dephasing, interaction with the nuclear spin bath, and second-order emissions, as well as technological imperfections, such as branching effects, non-perfect filtering, and photon losses. In a companion paper, we consider a particular physical implementation based on a quantum dot emitter embedded in a photonic crystal waveguide and apply our theoretical formalism to assess the fidelities achievable with current technologies.
title: Commissioning for social value and voluntary sector organisations: tensions in implementation
Creators: name: Mititelu, Cristina
Publisher: name: The Open University
Year: 2021

description: This thesis contributes to our understanding of commissioning for social value in England by exploring commissioning as practised by local contracting authorities through the lens of front-line workers’ experiences in both local authorities and voluntary sector organisations. This study, which sees an emphasis on social value as an extension of the practice of commissioning for outcomes by local contracting authorities, sheds light on the tension between local authority attempts to improve public services on the one hand and the involvement of voluntary sector organisations (VSOs) in the provision of those services on the other. The Public Service (Social Value) Act 2012 (SVA) points towards a fundamental change that is taking place in the dominant discourse of public service provision. It places greater emphasis on the capacity of local communities, cementing the involvement of the local service providers in policies and services to improve the state's action within this discourse. The study uses a qualitative explorative case study methodology, informed by interviews and participatory observation methods, to explore individuals’ practice as situated within specific institutional contexts. Multiple sources of data were combined holistically from individual case studies. This thesis explores the complex lived realities of practice and yields significant insights into front-line workers’ experiences in local contracting authorities and voluntary sector engagement with the commissioning process grounded in providing social value. The thesis questions how front-line workers’ everyday practices regarding commissioning for social value are bound up with and contest institutional practices and how this work connects with issues of understanding the policy, co-creates a shared understanding of the policy, and monitors social value in commissioning contracts. The study has two empirical dimensions: first, the data gathered from the first phase of interviews, with participants holding a range of institutional roles engaged with the commissioning experience; second, the data gathered from three case studies focused on local contracting authorities from east England, in which participants occupied a range of front-line institutional roles. Data analysis demonstrates how established understandings of policy inform the everyday practices of front-line workers and shape practices within the commissioning system’s institutional contexts. The thesis proposes new ways of commissioning social value to deliver better outcomes for local people and communities. It throws light on some cases efforts to reach beyond routine commissioning practices and carve out an approach that involves ‘working collaboratively with local people and providers to maximise the value created’ in the commissioning process.
Computations on B-model geometric transitions
Creators: name: Forbes, Brian
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study geometric transitions on Calabi- Yau manifolds from the perspective of the $B$ model. Looking toward physically motivated predictions, it is shown that the traditional conifold transition is too simple a case to yield meaningful results. The mathematics of a nontrivial example (of Aganagic and Vafa) is worked out carefully, and the expected equivalence is demonstrated.
description: 16 pages
Cyrene Declaration
Creators: name: Abdalla, Salem Buhashima
Publisher: name: figshare
Year: 2020
Subjects: subject: 120102 Architectural Heritage and Conservation
subject: FOS: Civil engineering

description: Cyrene Declaration is an optimistic initiative to sustainably develop, protect and preserve the local archaeological and natural treasures of the Green Mountain area of Eastern Libya. The declaration was made in the ancient Greek Gymnasium at Cyrene on 10 September 2007, which marks the inception of the world’s first regional scale conservation and development project. This project responds to a number of challenges and opportunities, some of which are confined to this region, and others which are found elsewhere in Libya and worldwide. At the core of this project is a drive to introduce a new model of socio-economic development, which considers and minimizes the environmental damage caused by development, whilst developing a more diverse source of economic growth in the region such as tourism.
This area is one of outstanding natural beauty and bio-diversity that contains one of the world’s most important UNESCO World Heritage Sites, covering the Greek and Roman remains of Cyrene. The emphasis is on renewable energy, sustainable design and reducing both the economic and power reliance on oil and gas in Libya. It is essential to the success of the project that it provides income and infrastructure to the local population and the impetus to protect those natural and cultural assets important to both tourism and quality of life. The global influence of climate change, and its effect on rainfall and rapid desertification- particularly in Africa and its arid northern areas- demand a response and it is appropriate that these areas spearhead the global action.
Liverpool-Maidanak monitoring of the Einstein Cross in 2006$-$2019. I. Light curves in the $gVrRI$ optical bands and microlensing signatures
Creators: name: Goicoechea, L. J.
name: Artamonov, B. P.
name: Shalyapin, V. N.
name: Sergeyev, A. V.
name: Burkhonov, O. A.
name: Akhunov, T. A.
name: Asfandiyarov, I. M.
name: Bruevich, V. V.
name: Ehgamberdiev, S. A.
name: Shimanovskaya, E. V.
name: Zheleznyak, A. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Quasar microlensing offers a unique opportunity to resolve tiny sources in distant active galactic nuclei and study compact object populations in lensing galaxies. We therefore searched for microlensing-induced variability of the gravitationally lensed quasar QSO 2237+0305 (Einstein Cross) using 4374 optical frames taken with the 2.0 m Liverpool Telescope and the 1.5 m Maidanak Telescope. These $gVrRI$ frames over the 2006$-$2019 period were homogeneously processed to generate accurate long-term multi-band light curves of the four quasar images A-D. Through difference light curves, we found strong microlensing signatures. We then focused on the analytical modelling of two putative caustic-crossing events in image C, finding compelling evidence that this image experienced a double caustic crossing. Additionally, our overall results indicate that a standard accretion disc accounts reasonably well for the brightness profile of UV continuum emission sources and for the growth in source radius when the emission wavelength increases: $R_λ \propto λ^α$, $α$ = 1.33 $\pm$ 0.09. However, we caution that numerical microlensing simulations are required before firm conclusions can be reached on the UV emission scenario because the $VRI$-band monitoring during the first caustic crossing and one of our two $α$ indicators lead to a few good solutions with $α\approx$ 1.
description: Accepted to A&A; 10 pages, 10 long tables (Tables 4-8 and 10-14) are available at the CDS; correction of affiliation
Multifractal eigenstates of quantum chaos and the Thue-Morse sequence
Creators: name: Meenakshisundaram, N.
name: Lakshminarayan, Arul
Publisher: name: arXiv
Year: 2004
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze certain eigenstates of the quantum baker's map and demonstrate, using the Walsh-Hadamard transform, the emergence of the ubiquitous Thue-Morse sequence, a simple sequence that is at the border between quasi-periodicity and chaos, and hence is a good paradigm for quantum chaotic states. We show a family of states that are also simply related to Thue-Morse sequence, and are strongly scarred by short periodic orbits and their homoclinic excursions. We give approximate expressions for these states and provide evidence that these and other generic states are multifractal.
description: Substantially modified from the original, worth a second download. To appear in Phys. Rev. E as a Rapid Communication