cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Partner selections in public goods games with constant group size
Creators: name: Wu, Te
name: Fu, Feng
name: Wang, Long
Publisher: name: arXiv
Year: 2009
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Most of previous studies concerning the Public Goods Game assume either participation is unconditional or the number of actual participants in a competitive group changes over time. How the fixed group size, prescribed by social institutions, affects the evolution of cooperation is still unclear. We propose a model where individuals with heterogeneous social ties might well engage in differing numbers of Public Goods Games, yet with each Public Goods Game being constant size during the course of evolution. To do this, we assume that each focal individual unidirectionally selects a constant number of interaction partners from his immediate neighbors with probabilities proportional to the degrees or the reputations of these neighbors, corresponding to degree-based partner selection or reputation-based partner selection, respectively. Because of the stochasticity the group formation is dynamical. In both selection regimes, monotonical dependence of the stationary density of cooperators on the group size was found, the former over the whole range but the latter over a restricted range of the renormalized enhancement factor. Moreover, the reputation-based regime can substantially improve cooperation. To interpret these differences, the microscopic characteristics of individuals are probed. We later extend the degree-based partner selection to general cases where focal individuals have preferences towards their neighbors of varying social ties to form groups. As a comparison, we as well investigate the situation where individuals locating on the degree regular graphs choose their co-players at random. Our results may give some insights into better understanding the widespread teamwork and cooperation in the real world.
description: comments are welcome
title: Colloque du GREC-Sud. À la croisée des chemins, changement climatique et changements sociaux
Publisher: name: Centre Norbert Elias
Year: 2025

description: Captations du colloque « À la croisée des chemins, changement climatique et changements sociaux » organisé par le Groupe Régional d’Experts sur le Climat de la région Sud (GREC-Sud) à Marseille en 2024.
On approximation of Markov binomial distributions
Creators: name: Xia, Aihua
name: Zhang, Mei
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: For a Markov chain $\mathbf{X}=\{X_i,i=1,2,...,n\}$ with the state space $\{0,1\}$, the random variable $S:=\sum_{i=1}^nX_i$ is said to follow a Markov binomial distribution. The exact distribution of $S$, denoted $\mathcal{L}S$, is very computationally intensive for large $n$ (see Gabriel [Biometrika 46 (1959) 454--460] and Bhat and Lal [Adv. in Appl. Probab. 20 (1988) 677--680]) and this paper concerns suitable approximate distributions for $\mathcal{L}S$ when $\mathbf{X}$ is stationary. We conclude that the negative binomial and binomial distributions are appropriate approximations for $\mathcal{L}S$ when $\operatorname {Var}S$ is greater than and less than $\mathbb{E}S$, respectively. Also, due to the unique structure of the distribution, we are able to derive explicit error estimates for these approximations.
description: Published in at http://dx.doi.org/10.3150/09-BEJ194 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
title: Emerging Neurological Infections in Brazil and Beyond
Creators: name: Lant, Suzannah
Publisher: name: University of Liverpool Repository
Year: 2028

description: Chikungunya, Zika and dengue are types of arthropod-borne viruses (arboviruses). They have emerged in recent decades causing outbreaks of disease with global spread. Principally transmitted by an Aedes aegypti mosquito vector, infection mostly manifests as a fever-arthralgia-rash syndrome. However, a link between these viruses and neurological disease is becoming increasingly clear. Whilst it may be a relatively rare manifestation of infection, neurological involvement often results in severe consequences, causing disability and death. This is an important global public health concern. 
 
These viruses co-circulate, and dual infection can occur. The spectrum of neurological manifestations linked to these viruses, and the importance of dual arbovirus infection are not fully understood. The research aimed to study i) the association between Zika, chikungunya, dengue and neurological disease in children and adults ii) the spectrum of neurological disease associated with infection iii) the clinical outcomes of patients with arbovirus-associated neurological disease in Brazil.
 
Initially, I studied adults with arboviral neurological disease in Pernambuco, Northeast Brazil, recruited during the 2015–16 Zika and chikungunya outbreaks. I subsequently conducted a multicentre case-control study in Brazil. The study ran between 2017-19, in the context of falling Zika case numbers nationally.  However, there were chikungunya outbreaks in Rio de Janeiro and Pernambuco over this time. I investigated the arbovirus-positive cases from this study in more detail, with a descriptive analysis of clinical outcomes. Through this work, I modified and refined criteria to define the strength of an association between defined neurological syndromes and viral infection and proposed approaches to use of outcome measures. Responding to the emerging COVID-19 pandemic, I modified and applied these criteria to patients with COVID-19 and neurological presentations for use in a global individual patient data meta-analysis, this characterised clinical presentations and outcomes. 
 
These findings advance current understanding and provide methodological approaches for clinical and epidemiological characterisation in the field of emerging and zoonotic infections.
Generalized scattering matrix for metallic nanorods
Creators: name: M. A. Kuntman
name: T. Çakır
name: E. Kuntman
Publisher: name: Zenodo
Year: 2020
Subjects: scattering matrix, Jones matrix, metallic nanorods, arbitrary scattering direction

description: We define a scattering matrix for metallic nanorods with arbitrary orientation, excitation and scattering directions.
Quantum Memory for Photons in Case of Many Close Lying Exciton Resonances in Solids
Creators: name: Gazazyan, A. D.
name: Gazazyan, E. A.
name: Margaryan, A. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The possibility of storage of quantum information with photons is studied in the case of resonant transitions via many close lying exciton levels in a solid with impurity Lambda-atoms. The upper levels of the impurity atom form resonant Fano states, similar to the autoionization atomic states, due to the configuration interaction with the continuum of the exciton band. In this case slowing of light pulses is shown to be realistic, in the presence of the control field, down to the group velocity much lower than that in vacuum. The possibility of storage and reconstruction of a quantum pulse is studied in the case of the instantaneous switching on/off of the control field. It is shown that the signal quantum pulse cannot be stored undistorted for differing values of Fano parameters and for non-zero two-photon detuning and decay rate between the lower levels (decoherence). However, for small difference of the Fano parameters and for small values of the two-photon detuning and the decoherence there is no distortion in the case where the length of the pulse is much longer than the linear absorption (amplification) length, so the shape and quantum state of the light pulse can be restored.
description: 15 pages, 3 figures
Spatio-Kinematic Structure at the Base of the [Fe II] Jets From L1551 IRS 5
Creators: name: Pyo, Tae-Soo
name: Hayashi, Masahiko
name: Kobayashi, Naoto
name: Terada, Hiroshi
name: Tokunaga, Alan T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present observational results of the [Fe II] 1.644 um emission from the jets of L1551 IRS 5. The data sets were obtained through 13 fully sampled slits aimed at the base of the jets. These sets are used to construct a three-dimensional cube. The field of view was 5."8 X 4."2. We confirmed that the position of the knot PHK1 coincides with a stationary, point-like x-ray source within 0."3. The northern and southern jets are distinguished from each other at a point 0."6 away from their driving sources. We also confirmed that the northern jet consists of well-separated high- and low-velocity components (HVC and LVC, respectively). The HVC has a terminal velocity of ~400 km/s and shows a consistently narrow velocity width of 40 km/s. The LVC covers the velocity range from V_LSR = 0 to -240 km/s and has broad velocity widths of ~150-180 km/s. These decrease with distance from the driving sources. The spatial width of the LVC varies from 0."6-0."7 at V_LSR ~ -200 km/s to 0."8-0."9 at V_LSR ~ -30 km/s. These characteristics are well understood in terms of the two types of outflow mechanisms that are working simultaneously: one is the HVC, which is launched in a narrow, inner radial region at 0.04-0.05 AU, and the other is the LVC, which is launched in a wider, outer radial region from within 0.1-4.5 AU of the accretion disk. Part of the LVC emission could arise in the gas entrained or shocked by the HVC. We also discuss the possibility that part of the HVC gas is thermalized at PHK1 to produce the x-ray emission and LVC.
description: 24 pages, 2 Tables, 6 Figures, Accepted by ApJ
Legal frameworks and the use of science in regional fisheries management organisations
Creators: name: MIdson, DW
Publisher: name: University Of Tasmania
Year: 2023

description: This thesis compares the role of science in the decision making processes and legal frameworks of a selection of regional fisheries management organisations (RFMOs) in order to understand the features of those frameworks which influence their use of science. The RFMOs analysed are the six largest non-tuna RFMOs, the: ‚Äö Commission for the Conservation of Antarctic Marine Living Resources, ‚Äö South East Atlantic Fisheries Organisation, ‚Äö General Fisheries Commission for the Mediterranean, ‚Äö Northwest Atlantic Fisheries Organization, ‚Äö North East Atlantic Fisheries Commission, and ‚Äö South Pacific Regional Fisheries Management Organisation. Each of these RFMOs enshrines science as the key input into fisheries management. However the thesis shows that there are variations between them regarding the consistency with which they followed the advice of their scientific advisors. These variations have enabled a comparison of both the legal frameworks and the decision making records of each body. The thesis submits that both the ability of the decision maker to take decisions in the absence of scientific consensus (or in the face of scientific uncertainty) and, transparency in the decision making process, are important factors which increase the effectiveness of the use of science in the decision making process. The comparative analysis conducted in the thesis has allowed the suggestion of modifications that could be made to RFMO legal frameworks in order to strengthen the ability of scientific advisors to provide salient advice, thereby improving quality and transparency in decision making processes.
Torsion and localization
Creators: name: Vilciauskas, Algis Richard
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this thesis is to develop the machinery of noncommutative localization as it is being used to date, along with some fundamental results and examples. We are not concerned with a search for a "true torsion theory" for R-modules, but rather with a unification of previous generalisations in a more natural categorical setting. In section 1, the generalisation of torsion for a ring R manifests itself as a kernel functor which is a left exact subfunctor of the identity functor on the category of R-modules. If a kernel functor ơ also has the property ơ(M/ơ(M)) = 0 for any R-module M, we say that ơ is idempotent. We treat the Gabriel correspondence which establishes a canonical bijection between kernel functors, filters of left ideals in R , and classes of R-modules closed under submodules, extensions, homomorphic images, and arbitrary direct sums. This result, which allows us to view torsion in several equivalent ways, is fundamental to the rest of the thesis. Section 2 presents some positive and negative observations on when a kernel functor is idempotent. In section 3 we begin by generalising the concept of injective module by defining ơ-injectivity relative to an idempotent kernel functor ơ. This yields a full coreflective subcategory of the category of R-modules. The localization functor relative to ơ is then constructed as the composite of the coreflector with the embedding of the subcategory. In section 4 we discuss the important "property T" which allows us to express the localization of an R-module as the module tensored with the localized ring, just as in the classical commutative case of localizing at a prime ideal. Finally in section 5 we see that every idempotent kernel functor can be represented by a finitely cogenerating injective R-module V and the relative localization of R by the double centralizer of V . Indications are that the generalised concept of torsion with its relative localization will prove itself increasingly valuable in the further study of rings and modules.
Density functional theory study of Fe(II) adsorption and oxidation on goethite surfaces
Creators: name: Russell, Benedict
name: Payne, Mike C.
name: Ciacchi, Lucio Colombi
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the interactions between Fe(II) aqua complexes and surfaces of goethite (alpha-FeOOH) by means of density functional theory calculations including the so-called Hubbard U correction to the exchange-correlation functional. Using a thermodynamic approach, we find that (110) and (021) surfaces in contact with aqueous solutions are almost equally stable, despite the evident needlelike shape of goethite crystals indicating substantially different reactivity of the two faces. We thus suggest that crystal anisotropy may result from different growth rates due to virtually barrierless adsorption of hydrated ions on the (021) but not on the (110) surface. No clear evidence is found for spontaneous electron transfer from an adsorbed Fe(II) hex-aqua complex to a defect-free goethite substrate. Crystal defects are thus inferred to play an important role in assisting such electron transfer processes observed in a recent experimental study. Finally, goethite surfaces are observed to enhance the partial oxidation of adsorbed aqueous Fe(II) upon reaction with molecular oxygen. We propose that this catalytic oxidation effect arises from donation of electronic charge from the bulk oxide to the oxidizing agent through shared hydroxyl ligands anchoring the Fe(II) complexes on the surface.
The Spectrum of a Type of Integral Operator
Creators: name: Tao, Andrew Yau-Shun
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this thesis is to determine the spectrum of a type of integral operator called "Convolution Operator" acting on LP(0, °°) . In the special case p = 2 , we have a tool called the Mellin transform, this enables us to analyze the spectrum in more detail. A number of papers have dealt with special cases of our result, the reader is referred to the bibliography of a paper by D. W. Boyd; (to appear). Spectra of Convolution Operators.
Additional file 1 of Circulating sex hormone levels in relation to male sperm quality
Creators: name: Zhao, Wei
name: Jing, Jun
name: Shao, Yong
name: Zeng, Rong
name: Wang, Cencen
name: Yao, Bing
name: Hang, Dong
Publisher: name: figshare
Year: 2020
Subjects: subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 1: Table S1. Association between serum sex hormone levels and total sperm count1. Table S2. Association between serum sex hormone levels and sperm concentrations1.
Modelling the steady state spectral energy distribution of the BL-Lac Object PKS 2155-304 using a selfconsistent SSC model
Creators: name: Weidinger, Matthias
name: Rüger, Michael
name: Spanier, Felix
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this paper we present a fully selfconsistent SSC model with particle acceleration due to shock and stochastic acceleration (Fermi-I and Fermi-II-Processes respectively) to model the quiescent spectral energy distribution (SED) observed from PKS 2155. The simultaneous August/September 2008 multiwavelength data of H.E.S.S., Fermi, RXTE, SWIFT and ATOM give new constraints to the high-energy peak in the SED concerning its curvature. We find that, in our model, a monoenergetic injection of electrons at $γ_0 = 910$ into the model region, which are accelerated by Fermi-I- and Fermi-II-processes while suffering synchrotron and inverse Compton losses, finally leads to the observed SED of PKS 2155-30.4 shown in H.E.S.S. and Fermi-LAT collaborations (2009). In contrast to other SSC models our parameters arise from the jet's microphysics and the spectrum is evolving selfconsistently from diffusion and acceleration. The $γ_0$-factor can be interpreted as two counterstreaming plasmas due to the motion of the blob at a bulk factor of $Γ= 58$ and opposed moving upstream electrons at moderate Lorentz factors with an average of $γ_u \approx 8$.
description: 4 figures
Facilitating collaborative learning in accounting students : a cross-institutional study of perceptions and experiences of group work in university accounting education
Creators: name: Smith, Bernadette
Publisher: name: University Of Tasmania
Year: 2023

description: Group work has taken on greater significance in accounting education in recent times. There appear to be three main drivers: employer and professional demand, specifically the increasing emphasis on generic skills such as teamwork, interpersonal, and communication skills; the changing face of higher education, with greater diversity and numbers of students, and a renewed emphasis on learning outcomes; and the literature that documents the benefits of collaborative learning for developing skills and improving student outcomes. However, there are different conceptualisations of what group work means and how related skill development can be integrated into the curriculum. Despite the many resources available, barriers continue to exist, preventing the effective development of teamwork skills, particularly within the confines of group work activities in accounting. The overall purpose of this study therefore is to examine the meaning of group work for accounting students and academics and to analyse the underlying epistemological assumptions driving these results. It also aims to address the lack of cross-institutional research in accounting education by interviewing academics from six different Australian universities and selecting a sample of students from three geographically and typologically diverse institutions. Using a theoretical framework based on Social Interdependence Theory (Johnson & Johnson, 1989a; 2009), and a mixed methods research (MMR) approach, which combines exploratory, archival, survey, and phenomenographic case study methodology, this study provides an in-depth investigation of the specific variations in students' understanding of group work, learning processes in group situations, and examines the experiences and perceptions of their accounting teachers at university. For academics the key findings are categorised into four domains, indicating positive and negative aspects of group work identified for both students and staff. For students, the quantitative results uncover an underlying latent structure of five key factors, which are subsequently supported by six qualitatively different ways that students experience group work. The qualitative categories of description are further grouped into two key domains: closed individualistic approaches to group work, and open approaches which embrace an interdependence perspective. Findings suggest however that in all variations there exists an overarching affective concept of connectedness and the need for respect. Above all, values and attitudes are considered key to facilitating collaborative learning in accounting. The implications of these findings are far reaching for all stakeholders and highlight the growing need to embrace psychological health and the emotional aspects of working together.
Development and Use of Standards for Grade, Color, and Character of American Cotton Linters
Creators: name: Meloy, Guy S.
name: Meloy, Guy S.
Publisher: name: Unknown
Year: 1936
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies

description: Excerpts from the report: Cotton linters is that residue of vegetable hair found on the seed of all varieties of American cotton after ginning. Until methods were devised for removing it economically, it seriously interfered with the efficiency of the recovery of cottonseed oil and materially reduced the value of the residual cake. The ever-increasing number of channels of consumption for linters have naturally resulted in refinements and restrictions as to the quality of the linters used by each, particularly since linters compete with certain forms of cotton, mill wastes, and wood pulp. The demands for specific qualities of linters in industry and the experiences with linters during the World War demonstrated the need for standard measures of quality. The United States standard grades for American cotton linters have been available since August 1, 1926, but no effort has been made under the provisions of the Cotton Standards Act to enforce their use in interstate or foreign commerce. The present use of these standards, therefore, may be taken as an indication of their utility. A recent survey showed that from a production standpoint approximately 75 percent of the annual crop is now handled on the basis of the standard grades, either in the control of the quality of the linters produced or in connection with their sale. So successful have the oil mills been in controlling the quality of linters by means of the standards, that some mills have been able to sell 95 percent of their total output on the two subgrades that are in greatest demand by consumers, and at substantial premiums.
Tall eucalypt forests of Australia : structure, pattern and process
Creators: name: Buettel, Jessie
Publisher: name: University Of Tasmania
Year: 2023

description: The use of observed patterns to infer underlying biotic and physical drivers of eco-evolutionary dynamics is a challenge for population, community and conservation ecology. This is because whilst an understanding of process is required to make useful predictions and test theory, it is static or progressive patterns that are most readily observed in ecological systems, especially at landscape scales. In this thesis, I report on the links between pattern and process, using spatially explicit plot-based information from 48, one hectare tall eucalypt forest communities, spanning the coastal zones of eastern, southern and western Australia. These data are the first to be established across a continental Australian forest system, and were analysed using a combination of point-pattern statistics, likelihood-based inference, structural equation modelling, and simulation modelling. I also developed two new methods for analysing landscape topography and mapping the spatial location of treefalls. Interdisciplinary collaborations, including with astrophysicists, underpinned the novelty of the research. I demonstrated that, at a local scale, climate was a strong predictor of non-eucalypt basal area and density, and eucalypt basal area (but not density), consistently explaining >40% of the deviance in these variables. While non-eucalypts thrived within narrower temperature ranges (indicating avoidance of temperature extremes), eucalypt density and basal area were higher in cold-dry conditions. Regional-to-continental-level analyses revealed that community diversity and carbon storage were decoupled in Australia, the former being driven largely by biogeographic factors and the latter by latitudinal gradients and evapotranspiration. This decoupling was not evident for the global forest biomes, supporting the assertion that Australia's eucalypt forests are unique ‚Äö- in the context of the tall forest biome ‚Äö- in a global context. The findings from this thesis underpins, both theoretically and empirically, the fundamental processes influencing forest structure and function in the tall eucalypt forests of Australia. For management and conservation to be successful in today's human-dominated 'Anthropocene', a thorough process-based understanding of the ecosystem in question is required. In the case of Australian tall eucalypt forests, I show how thinking outside-the-box, measuring treefall, engaging in interdisciplinary collaborations, and facilitating innovative solutions, are a productive way forward.
Towards a direct measurement of vacuum magnetic birefringence: PVLAS achievements
Creators: name: Della Valle, F.
name: Di Domenico, G.
name: Gastaldi, U.
name: Milotti, E.
name: Pengo, R.
name: Ruoso, G.
name: Zavattini, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Optics (physics.optics)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Nonlinear effects in vacuum have been predicted but never observed yet directly. The PVLAS collaboration has long been working on an apparatus aimed at detecting such effects by measuring vacuum magnetic birefringence. Unfortunately the sensitivity has been affected by unaccounted noise and systematics since the beginning. A new small prototype ellipsometer has been designed and characterized at the Department of Physics of the University of Ferrara, Italy entirely mounted on a single seismically isolated optical bench. With a finesse F = 414000 and a cavity length L = 0.5 m we have reached the predicted sensitivity of psi = 2x10^-8 1/sqrt(Hz) given the laser power at the output of the ellipsomenter of P = 24 mW. This record result demonstrates the feasibility of reaching such sensitivities and opens the way to designing a dedicated apparatus for a first detection of vacuum magnetic birefringence.
Price and quality competition in the restaurant industry: effects of restaurants’ reputation
Creators: name: Ferreira, Fernanda
name: Ferreira, Flávio
name: Fernandes, Paula Odete
Publisher: name: Journal of Tourism & Development
Year: 2021

description: This paper considers a quality and price competition between two asymmetric restaurants, by establishing a two-stage dynamic game model. We nd that the restaurant with the most reputation offers more food with a higher quality than its rival. We also analyse the effects of the difference of restaurants' reputation on the market equilibrium outcomes. We show that the increase in the reputation difference between restaurants decreases profits of the small restaurant and raises prots of the large restaurant, consumer surplus and social welfare. Furthermore, compared with the case under quantity competition instead of price, social welfare is higher under price competition, while the opposite holds for small restaurant's profits. However, the relationship of large restaurant's profits is ambiguous.
description: Journal of Tourism & Development, vol. 37 (2021)
Search for b-> u transitions in B0 -> D0 K*0 decays
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a study of the decays B0 -> D0 K*0 and B0 -> barD0 K*0 with K*0 -> K+pi-. The D0 and the barD0 mesons are reconstructed in the final states f=K+pi-, K+pi-pi0, K+pi-pi+pi- and their charge conjugates. Using a sample of 465 million BBbar pairs collected with the Babar detector at the PEP-II asymmetric-energy e+e- collider at SLAC, we measure the ratio R_{ADS}=[Gamma(barB0 -> [f]_D barK*0)+Gamma(B0 -> [bar{f}]_D K*0)]/ [Gamma(barB0 -> [bar{f}]_D barK*0)+Gamma(B0 -> [f]_D K*0)] for the three final states. We do not find significant evidence for a signal and set the following limits at 95% probability: R_{ADS}(Kpi)<0.244, R_{ADS}(Kpipi0)<0.181 and R_{ADS}(Kpipipi)<0.391. From the combination of these three results, we find that the ratio rS between the b -> u and the b -> c amplitudes lies in the range [0.07,0.41] at 95% probability.
description: 11 pages, 12 postscript figures, submitted to Phys. Rev. D (Rapid Communications)
Experience and satisfaction evaluation in fashion events
Creators: name: Liberato, Dália
name: Mendes, Benedita
name: Liberato, Pedro
name: Alén, Elisa
Publisher: name: Journal of Tourism & Development
Year: 2021

description: Fashion events contribute to the enhancement of cities and regions as tourism destinations. The aim of this study is to understand the influence of the individual profile and characteristics of the trip in the evaluation of the experience considering the participation in fashion events and understand the influence of the experience of participation in the event, in the evaluation of the experience and the degree of satisfaction with the event. On the empirical side, using a quantitative methodology, the research presents a case study, investigating the relationship between the dimensions individual profile, characteristics of the trip, experience, current experience and satisfaction. Main findings show that Individual Profile, Characteristics of the Trip and Participation in Event positively affects the Evaluation of Experience, and Participation in the event positively affects the degree of satisfaction regarding the event. In terms of managerial implications, the authors suggest the existence of a mutual effect between the Individual Profile, the Characteristics of the Trip and the Knowledge and Participation in previous editions with the way that participants of fashion events will experience and evaluate their satisfaction regarding the event.
description: Journal of Tourism & Development, vol. 37 (2021)
FAIR Data in the Scholarly Communications Lifecycle
Creators: name: Simons, Natasha
name: Erdmann, Chris
name: Bangert, Daniel
name: Murphy, Fiona
Publisher: name: Zenodo
Year: 2020
Subjects: FAIR Data
FSCI
FORCE11
Scholarly Communications
Research Data

description: Course W21 FAIR Data in the Scholarly Communications Lifecycle delivered completely online at the FORCE11 Scholarly Communications Institute (FSCI) 2020. From the FSCI 2020 website description: This course was will focus on FAIR research data management and stewardship practices. It will provide an understanding of FAIR (findable, accessible, interoperable, and reusable) data and how it fits into scholarly communication workflows. Participants will learn about the FAIR Data Principles and how they can be applied in practice. Good data stewardship is the cornerstone of knowledge, discovery, and innovation in research. The FAIR Data Principles address data creators, stewards, software engineers, publishers, and others to promote maximum use of research data. In research libraries, the principles can be used as a framework for fostering and extending research data services. This course will provide an overview of the FAIR Data Principles and the drivers behind their development by a broad community of international stakeholders. We will explore a range of topics related to putting FAIR data into practice, including how and where data can be described, stored, and made discoverable (e.g., data repositories, metadata); methods for identifying and citing data; interoperability of (meta)data; best-practice examples; and tips for enabling data reuse (e.g., data licensing). Along the way, we will get hands-on with data and tools through self-paced exercises. There will be opportunities for participants to learn from each other and to develop skills in data management and expertise in making data FAIR. Level: Beginner to intermediate Intended Audience: The course is aimed at individuals working with or expecting to work with data as researchers, publishers, librarians, or in research support, especially those seeking to develop their skills in managing FAIR data in practice and to understand the tools that can support them in doing this.
Flavor-twisted boundary condition for simulations of quantum many-body systems
Creators: name: Yin, Wei-Guo
name: Ku, Wei
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present an approximative simulation method for quantum many-body systems based on coarse graining the space of the momentum transferred between interacting particles, which leads to effective Hamiltonians of reduced size with the flavor-twisted boundary condition. A rapid, accurate, and fast convergent computation of the ground-state energy is demonstrated on the spin-1/2 quantum antiferromagnet of any dimension by employing only two sites. The method is expected to be useful for future simulations and quick estimates on other strongly correlated systems.
description: 6 pages, 2 figures
Phase-shift dynamics and resilience of temperate reef states to urban stressors
Creators: name: Kriegisch, N
Publisher: name: University Of Tasmania
Year: 2023

description: In recent decades there has been a concerning trend of loss of kelp beds to sea urchin 'barrens' as a result of overgrazing by urchins. These two habitat states have been extensively studied across many systems worldwide, however the underlying dynamics of the transition to barrens, the recovery to kelp, and mechanisms of resilience of either habitat configuration are not fully appreciated. This thesis studies the transitions of kelp beds to sea urchin barrens and vice versa in relation to the stressors typical of urbanised coastal areas, namely enhanced levels of nutrients and sediment. At several sites in Port Phillip Bay (Victoria, Australia) adjacent the city of Melbourne, the role of sea urchins (Heliocidaris erythrogramma) in influencing the abundance of kelp (Ecklonia radiata) and other macroalgae was examined by assessing behavioural traits of the urchins and characteristics of both urchins and kelp in experiments considering both the 'bottom-up' force of nutrients and the 'top-down' force of grazing, together with the effects of sedimentation. It is revealed that the sea urchin is a major driver of community structure on rocky reefs in Port Phillip Bay. Sediment enhancement has no direct effect on intact kelp beds, while nutrient enhancement can play a beneficial role in strengthening the resilience of kelp beds by stimulating growth of kelp, but grazing of urchins overwhelms the positive effect of the nutrients. Densities exceeding 4 urchins m\\(^{-2}\\) increase the risk of overgrazing with a definite phase-shift to urchin barrens at densities of 8 urchins m\\(^{-2}\\)or greater. Conversely, kelp bed recovery will only occur when urchin densities are below 4 m\\(^{-2}\\). Nutrient enhancement does not change the thresholds in either direction. Assessments of sea urchin behaviour reveal that the availability of drift-kelp alters urchin foraging behaviour, so that if sufficient drift material is available, urchins will not actively overgraze attached algae. Considering that neither enhancement of nutrients nor sediments changes the likelihood of a phase-shift, sea urchins should be the focal point of any effort to protect existing kelp beds or effect the recovery of kelp on urchin barrens. It is therefore essential to identify the tipping points in urchin biomass/density that lead to shifts in either direction, and how to influence urchin foraging behaviour to prevent overgrazing of attached algae.
Four Years of Realtime GRB Followup by BOOTES-1B (2005-2008)
Creators: name: Jelinek, Martin
name: Castro-Tirado, Alberto J.
name: Postigo, Antonio de Ugarte
name: Kubanek, Petr
name: Guziy, Sergei
name: Gorosabel, Javier
name: Cunniffe, Ronan
name: Vitek, Stanislav
name: Hudec, Rene
name: Reglero, Victor
name: Sabau-Graziati, Lola
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Four years of BOOTES-1B GRB follow-up history are summarised for the first time in the form of a table. The successfully followed events are described case by case. Further, the data are used to show the GRB trigger rate in Spain on a per-year basis, resulting in an estimate of 18 triggers and about 51 h of telescope time per year for real time triggers. These numbers grow to about 22 triggers and 77 h per year if we include also the GRBs observable within 2 hours after the trigger.
description: 16 pages, Accepted into Proceedings of AstroRob Malaga 2009
Additional file 1 of Clinical and histological significance of urinary CD11c+ macrophages in lupus nephritis
Creators: name: Kim, Jihye
name: Lee, Jung Sun
name: Go, Heounjeong
name: Lim, Joon Seo
name: Oh, Ji Seon
name: Kim, Yong-Gil
name: Lee, Chang-Keun
name: Yoo, Bin
name: Hong, Seokchan
Publisher: name: figshare
Year: 2020
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1: Supplementary Figure 1. Comparison of the number (left) and proportion (right) of urinary CD11c+ macrophages between patients with Class III (n = 14) and Class IV (n = 13) LN. Supplementary Figure 2. The numbers of urinary CD3+ T cells and clinicopathologic features of proliferative lupus nephritis (LN). (a) ROC curves of the predictive values of urinary CD3+ T cells for proliferative LN (proliferative =14, non-proliferative = 12). (b) The numbers of urinary CD3+ T cells in patients with proliferative LN (n = 14) according to the presence of tubular atrophy, interstitial fibrosis, glomerular crescents, and glomerular sclerosis. (c) Correlation between the numbers of urinary CD3+ T cells and chronicity, activity scores, the amounts of proteinuria, and disease activity in patients with proliferative LN (n = 14). (d) The numbers of urinary CD3+ T cells in patients with proliferative LN according to renal response to immunosuppressants (no [−], partial/complete [+]) (n = 10).
Parametric Feynman integrals and determinant hypersurfaces
Creators: name: Aluffi, Paolo
name: Marcolli, Matilde
Publisher: name: arXiv
Year: 2009
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The purpose of this paper is to show that, under certain combinatorial conditions on the graph, parametric Feynman integrals can be realized as periods on the complement of the determinant hypersurface in an affine space depending on the number of loops of the Feynman graph. The question of whether the Feynman integrals are periods of mixed Tate motives can then be reformulated (modulo divergences) as a question on a relative cohomology being a realization of a mixed Tate motive. This is the cohomology of the pair of the determinant hypersurface complement and a normal crossings divisor depending only on the number of loops and the genus of the graph. We show explicitly that this relative cohomology is a realization of a mixed Tate motive in the case of three loops and we give alternative formulations of the main question in the general case, by describing the locus of intersection of the divisor with the determinant hypersurface complement in terms of intersections of unions of Schubert cells in flag varieties. We also discuss different methods of regularization aimed at removing the divergences of the Feynman integral.
description: 34 pages latex, 7 figures
Chlorinated auxin in the Fabaceae : distribution, evolutionary origin and genetic aspects
Creators: name: Lam, HK
Publisher: name: University Of Tasmania
Year: 2023

description: The ubiquitous presence in plants of a group of hormones called auxins, which includes indole-3-acetic acid (IAA), 4-chloroindole-3-acetic acid (4-Cl-IAA), indole-3-butyric acid (IBA) and phenylacetic acid (PAA), reflects their pivotal roles in mediating various aspects of plant growth and morphogenesis. However, the level of 4-Cl-IAA greatly exceeds the level of primary auxin, IAA in maturing pea (Pisum sativum) seeds. This highly potent chlorinated auxin, 4-Cl-IAA, and its precursor, chlorinated tryptophan (4-Cl-Trp) are mainly found in seeds but were once thought to be restricted to species of the tribe Fabeae within the Fabaceae. One curious exception was Pinus sylvestris, (Scots pine), which was also reported to contain chlorinated auxin in seeds. The action and activity of halogenating enzymes, however, remains unknown in plants. This thesis reports a comprehensive study on the distribution of the chlorinated auxin in the Fabaceae, by screening key species in the Fabaceae and the genus Pinus. For the first time, 4-Cl-IAA was detected in the reproductive structures of species in the genera Trifolium, Melilotus, Trigonella, Medicago and Ononis, all beyond the tribe Fabeae. Scots pine and four other Pinus species, including P. flexilis, P. pinea, P. radiata and P. parviflora, were retested but none contained detectable levels of 4-Cl-IAA. This supports that 4-Cl-IAA is unique to the Fabaceae in all plant species. The notion that chlorinated auxin is restricted to reproductive structures was supported by the evidence of much higher levels of the hormone in the seeds than vegetative tissues in broad bean (Vicia faba) in this study. No detectable level of 4-Cl-IAA was found in the seeds of the cultivated species Cicer arietinum as well as its wild relative, C. echinospermum, both from the tribe Cicerae, immediately basal to the tribe Fabeae and Trifolieae. Five species (Galega officinalis, Galega bicolor, Parochetus communis, Astragalus propinquus and A. sinicus) from tribes and clades basal or sister to the tribe Cicerae were also found to not contain detectable level of 4-Cl-IAA. The absence of 4-Cl-IAA in these species suggests a single evolutionary origin of 4-Cl-IAA, which can be used as a phylogenetically informative trait within the Fabaceae. Interestingly, the evidence indicates that some Trigonella species do not produce 4-Cl-IAA in their seeds. This loss of chlorinating ability is thought to be a derived state in the genus and unique to this genus within the Trifolieae, shedding light on interspecific relationships within the genus. A previously published putative vanadium dependent haloperoxidase gene sequence was used to generate pea haloperoxidase mutants by Targeting Induced Local Lesions in Genomes (TILLING). No obvious phenotypes were observed among the mutants in relation to 4-Cl-IAA synthesis and hormone levels, suggesting the possibility of gene redundancy.
Measurement of the Charm and Beauty Structure Functions using the H1 Vertex Detector at HERA
Creators: name: The H1 Collaboration
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Inclusive charm and beauty cross sections are measured in e-p and e+p neutral current collisions at HERA in the kinematic region of photon virtuality 5
description: 41 pages, 4 tables, 19 figures. Revised version, accepted by journal
Doves and hawks in economics revisited. An evolutionary quantum game theory-based analysis of financial crises
Creators: name: Hanauske, Matthias
name: Kunz, Jennifer
name: Bernius, Steffen
name: König, Wolfgang
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Finance (q-fin.GN)
subject: Physics and Society (physics.soc-ph)
subject: Trading and Market Microstructure (q-fin.TR)
subject: Quantum Physics (quant-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: The last financial and economic crisis demonstrated the dysfunctional long-term effects of aggressive behaviour in financial markets. Yet, evolutionary game theory predicts that under the condition of strategic dependence a certain degree of aggressive behaviour remains within a given population of agents. However, as the consequences of the financial crisis exhibit, it would be desirable to change the 'rules of the game' in a way that prevents the occurrence of any aggressive behaviour and thereby also the danger of market crashes. The paper picks up this aspect. Through the extension of the in literature well-known Hawk-Dove game by a quantum approach, we can show that dependent on entanglement, also evolutionary stable strategies can emerge, which are not predicted by classical evolutionary game theory and where the total economic population uses a non aggressive quantum strategy.
On non-linear time-lag evolution equations
Creators: name: Lam, Che-Bor
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this thesis is to obtain existence theorems for perturbated evolution equations in Hilbert spaces and Banach spaces. A practical example of the perturbations under consideration is an operator with a time-lag or delayed argument. Throughout the thesis, the Galerkin approximation method will be used to establish the existence theorems. In chapter one, we study the problem in Hilbert spaces. The key is to obtain a priori estimates on the time fractional derivatives of the approximate solutions. We shall prove that there exists a solution with time fractional derivatives of order less than 1/2. In chapter two, we consider the problem in Banach spaces. Again, we apply the Galerkin approximation method, but with a special basis. In chapter three, we study periodic solutions of evolution equations. Here we use the Schauder-Tychonov fixed point theorem to prove the existence of periodic solution to the approximating equations. In the last chapter, we give examples of appliactions of the various theorems proved in the first three chapters.