cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Geriatric emergency medicine – why we should use the Clinical Frailty Scale
Creators: name: Fehlmann, Christophe
Publisher: name: Université de Genève
Year: 2024
Subjects: info:eu-repo/classification/ddc/617
Frailty
Emergency medicine
Older patients
Geriatric
Paramedic

description:
Over the last decade, the proportion of emergency department (ED) visits by patients aged 65 and older has significantly increased, now accounting for more than 40% of all ED visits. Approximately 10% of these visits require critical interventions such as emergency surgery or admission to monitored units. Frailty, a clinical syndrome characterized by diminished physiological reserves and increased vulnerability to adverse health outcomes, is particularly common in this population and poses unique challenges for acute care management. Patients with frailty are more susceptible to complications during their ED and beyond visits, including delirium, unnecessary hospitalizations, and prolonged recovery times. Addressing these challenges requires a tailored approach to both the identification and management of frailty in emergency settings to improve outcomes and reduce the risks associated with acute care in this vulnerable population.

In this thesis, I began by reviewing the current use of the Clinical Frailty Scale (CFS) in the scientific literature in the emergency settings, identifying existing research gaps and potential areas for improvement. This comprehensive analysis allowed for the identification of areas where the CFS is being effectively applied and where further research or refinement is needed to enhance its utility in clinical practice. I then synthesized the evidence on the association between frailty and outcomes following emergency general surgery, a critical aspect of acute care. The findings demonstrated that frail patients tend to have worse outcomes, further emphasizing the importance of identifying frailty as early as possible. Recognizing the challenges of frailty assessment in the emergency department, the potential for prehospital frailty screening was explored. Specifically, the performance of paramedic assessments of frailty using the CFS was examined. The results showed that while the reliability of paramedic assessments was excellent, there is room for improvement in terms of validity, highlighting the need for further refinement in frailty identification at this stage of care. Finally, a survey of over 60 European emergency departments was conducted to evaluate their operational characteristics, revealing significant variability in the availability and structure of geriatric-dedicated services. This diversity emphasizes the need for standardized approaches to optimize care for older adults in emergency settings and opportunities for improving and expanding geriatric-specific resources across different healthcare systems.
Stability of delayed systems in structural control applications
Creators: name: Londoño Monsalve, Julián Mauricio
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: This analyses the applicability of a quite novel methodology of experimental testing socalled Real-Time Dynamic Substructuring Test (RTDST) in the assessment of protection systems for natural hazards mitigation. RTDST allows testing critical components of structures at full-scale under realistic extreme loading conditions. Only those components where the nonlinearity behavior is concentrated are physically tested, whilst the remainder of the structure is simulated numerically. The main drawback of this technique lies in the unavoidable delays associated to the loop feeding back some experimental measurements to the numerical model. Such delays may cause instability during the test. This work is focused on testing passive control systems based on large-scale non linear fluid viscous dampers. Throughout a careful explicit stability analysis, we present a complete set of closed-form expressions to describe the dynamics of the main complex delay-induced phenomena exhibited for the delayed system. This analysis is addressed in the context of both classic stability theory for non-linear systems and the qualitative theory of Piecewise Smooth Dynamical Systems. The results obtained are also useful for other kind of mechanical systems where the response of some components is arriving with delay and may cause harmful effects on system behaviour. Semi-active control by MR dampers are examples of such systems. The theoretical results obtained were confirmed experimentally. When carrying out the experimental campaign, in fact, unexpected selfsustained oscillations were detected. This was caused by delays in the feedback loop, even when they are very small, unavoidably lead the system to self-sustained oscillations at high frequency.
Jet Parameters in the Black-Hole X-Ray Binary MAXI J1820+070
Creators: name: Zdziarski, Andrzej A.
name: Tetarenko, Alexandra J.
name: Sikora, Marek
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the jet in the hard state of the accreting black-hole binary MAXI J1820+070. From the available radio-to-optical spectral and variability data, we put strong constraints on the jet parameters. We find while it is not possible to uniquely determine the jet Lorentz factor from the spectral and variability properties alone, we can estimate the jet opening angle ($\approx 1.5\pm1^\circ$), the distance at which the jet starts emitting synchrotron radiation ($\sim 3 \times10^{10}$cm), and the magnetic field strength there ($\sim$10$^4$G), with relatively low uncertainty, as they depend weakly on the bulk Lorentz factor. We find the breaks in the variability power spectra from radio to sub-mm are consistent with variability damping over the time scale equal to the travel time along the jet at any Lorentz factor. This factor can still be constrained by the electron-positron pair production rate within the jet base, which we calculate based on the observed X-ray/soft gamma-ray spectrum, and the jet power, required to be less than the accretion power. The minimum ($\sim$1.5) and maximum ($\sim$4.5) Lorentz factors correspond to the dominance of pairs and ions, and the minimum and maximum jet power, respectively. We estimate the magnetic flux threading the black hole and find the jet can be powered by the Blandford-Znajek mechanism in a magnetically-arrested flow accretion flow. We point out the similarity of our derived formalism to that of core shifts, observed in extragalactic radio sources.
description: ApJ, in press
Statistical analysis of electron bunch longitudinal profile reconstructions using the Gerchberg-Saxton algorithm
Creators: name: Ostler, Bricker
name: Yampolsky, Nikolai
name: Marksteiner, Quinn
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Knowledge of longitudinal electron bunch profiles is vital to optimize the performance of plasma wakefield accelerators and x-ray free electron laser linacs. Because of their importance to these novel applications, noninvasive frequency domain techniques are often employed to reconstruct longitudinal bunch profiles from coherent synchrotron, transition, or undulator radiation measurements. In this paper, we detail several common reconstruction techniques involving the Kramers-Kronig phase relationship and Gerchberg-Saxton algorithm. Through statistical analysis, we draw general conclusions about the accuracy of these reconstruction techniques and the most suitable candidate for longitudinal bunch reconstruction from spectroscopic data.
description: The following article has been submitted to Review of Scientific Instruments
Seismic soil-structure interaction for pile supported systems
Creators: name: Di Laora, Raffaele
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: Civil engineering structures involve structural elements with direct contact with ground. When the external actions, such as earthquakes, act on these systems, neither the structural displacements nor the ground displacements, are independent of each other. The process in which the response of the soil influences the motion of the structure and the motion of the structure influences the response of the soil is termed as soil-structure interaction (SSI). Damage occurred in recent earthquakes, have highlighted that the seismic behaviour of a structure is highly influenced not only by the response of the superstructure (considered as fixed based), but also by the response of the foundation and the ground as well. Hence, some modern seismic design codes impose that the effect of SSI must be taken into account, even if only in particular situations (depending on the particular Code). The complex 3-component interaction (soil-foundation-structure) may be analysed (in the hypothesis of linear elasticity) with reference to two separate interaction, reflecting distinct physic phenomena. The first one is the modification of the input motion at the base of the structure due to the different stiffness of the foundation with respect to the soil, referred to as kinematic interaction; the structure vibrates (because of its inertia) in dependence also of the soil-foundation system, and the latter experiences additional deformations (inertial interaction). The thesis deal with seismic SSI problems for pile supported structures with particular reference to the design aspects in the light of the recent Italian Codes and Eurocodes. In fact, despite the state of the art in SSI analyses has evolved steadily over the last decades, the state of practice for engineering characterization of SSI effects for routine structures has not undergone recent similar advancement. For this reason, aim of the thesis is: - to better understand the mathematical and physical meaning of kinematic interaction; - to provide simplified formulas for evaluating its effects in terms of bending moments (interface and pile head);to find simply rules to estimate the importance of “filtering effect” exerted by piles on foundation input motion; - to investigate the relative importance of kinematic vs. inertial interaction; - to provide a criterion to combine inertial and kinematic maximum effects.
Cross-fertilising extra gauge boson searches at the LHC
Creators: name: Araz, Jack Y.
name: Frank, Mariana
name: Fuks, Benjamin
name: Moretti, Stefano
name: Özdal, Özer
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For the purpose of cross-fertilising currently separate experimental approaches, we connect results of LHC analyses attempting to access the properties of additional $W^\prime$ and $Z^\prime$ bosons from Drell-Yan processes. Under theoretical assumptions linking the two new gauge bosons, we take into account that such possible states of nature are wide enough (in relation to the leptonic mass resolution) for the corresponding signals be significantly affected by interference effects with the background from the Standard Model. The shape of the differential cross section may then no longer be a standard Breit-Wigner distribution, and asymmetry observables would become useful for characterisation (and, possibly, discovery) purposes. Under such conditions we concentrate our analysis on specific widely-studied models: the Sequential Standard Model, a model with an additional $SU(2)_L$ gauge symmetry, as well as standard and alternative realisations of the Left-Right Symmetric Model. We show how information gathered in $Z'$ boson searches in terms of cross section and/or asymmetry distributions can be used to improve $W'$ boson searches in terms of the LHC sensitivity, and {\it vice versa}.
description: 24 pages, 14 figures
Jump on the Bandwagon? -- Characterizing Bandwagon Phenomenon in Online NBA Fan Communities
Creators: name: Wang, Yichen
name: Zhang, Jason Shuo
name: Han, Xu
name: Lv, Qin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Understanding user dynamics in online communities has become an active research topic and can provide valuable insights for human behavior analysis and community management. In this work, we investigate the "bandwagon fan" phenomenon, a special case of user dynamics, to provide a large-scale characterization of online fan loyalty in the context of professional sports teams. We leverage the existing structure of NBA-related discussion forums on Reddit, investigate the general bandwagon patterns, and trace the behavior of bandwagon fans to capture latent behavioral characteristics. We observe that better teams attract more bandwagon fans, but they do not necessarily come from weak teams. Our analysis of bandwagon fan flow also shows different trends for different teams, as the playoff season progresses. Furthermore, we compare bandwagon users with non-bandwagon users in terms of their activity and language usage. We find that bandwagon users write shorter comments but receive better feedback, and use words that show less attachment to their affiliated teams. Our observations allow for more effective identification of bandwagon users and prediction of users' future bandwagon behavior in a season, as demonstrated by the significant improvement over the baseline method in our evaluation results.
description: 16 pages, 5 figures, accepted to SocInfo 2020
Structural stability of finite dispersion-relation preserving schemes
Creators: name: David, Claire
name: Sagaut, Pierre
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The goal of this work is to determine classes of travelling solitary wave solutions for a differential approximation of a finite difference scheme by means of a hyperbolic ansatz. It is shown that spurious solitary waves can occur in finite-difference solutions of nonlinear wave equation. The occurance of such a spurious solitary wave, which exhibits a very long life time, results in a non-vanishing numerical error for arbitrary time in unbounded numerical domain. Such a behavior is referred here to has a structural instability of the scheme, since the space of solutions spanned by the numerical scheme encompasses types of solutions (solitary waves in the present case) that are not solution of the original continuous equations. This paper extends our previous work about classical schemes to dispersion-relation preserving schemes.
Seismic soil pile interaction:experimental evidence
Creators: name: Moccia, Flaviana
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: The comprehension of the real behaviour of pile foundations under earthquake loading is very important, since it can significantly affect the performance of the superstructure. As a matter of fact the experience of recent earthquake has confirmed that piles can suffer extreme damage and failure under earthquake loading. The case histories from Kobe earthquake (1995) indicate that not only the inertial actions but also the kinematic ones, due to ground movements, which was overlooked in design specifications at that time, had significant effects on pile damage. The purpose of this work is to examine the complex soil-structure interaction problem, on the basis of the results of an original experimental activity on shaking table, particularly devoted to the evaluation of kinematic interaction effects in layered soil configurations. A great amount of data has been collected during the experimental study, relative to around 400 shaking events on a single pile. The test focused on three different subsoil configurations, a monolayer and two layered deposits, with the aim of highlighting the influence of soil stiffness contrast on kinematic interaction. The effects of different pile head conditions, including the presence a single degree of freedom superstructure, have been investigated. The pile response has been evaluated mainly in terms of bending moments induced by both kinematic interaction and coupled kinematic and inertial effects. The seismic motions at the foundation level, due to kinematic interaction, has been investigated and compared with the free field response.
The string/gauge theory correspondence in QCD
Creators: name: Peeters, Kasper
name: Zamaklar, Marija
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Ideas about a duality between gauge fields and strings have been around for many decades. During the last ten years, these ideas have taken a much more concrete mathematical form. String descriptions of the strongly coupled dynamics of semi-realistic gauge theories, exhibiting confinement and chiral symmetry breaking, are now available. These provide remarkably simple ways to compute properties of the strongly coupled quark-gluon fluid phase, and also shed new light on various phenomenological models of hadron fragmentation. We present a review and highlight some exciting recent developments.
description: Lectures presented by KP at the 45th Winter School on Theoretical Physics, February 2007, Schladming, Austria; v3: minor corrections, typos fixed, references added
Imaging through fog using quadrature lock-in discrimination
Creators: name: Kumar, Shashank
name: Debnath, Bapan
name: S., Meena M.
name: Fade, Julien
name: Dhar, Sankar
name: Alouini, Mehdi
name: Bretenaker, Fabien
name: Ramachandran, Hema
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We report experiments conducted in the field in the presence of fog, that were aimed at imaging under poor visibility. By means of intensity modulation at the source and two-dimensional quadrature lock-in detection by software at the receiver, a significant enhancement of the contrast-to-noise ratio was achieved in the imaging of beacons over hectometric distances. Further by illuminating the field of view with a modulated source, the technique helped reveal objects that were earlier obscured due to multiple scattering of light. This method, thus, holds promise of aiding in various forms of navigation under poor visibility due to fog.
Advanced biomechanical analysis of native, injured, and reconstructed joints for optimisation of surgical procedures
Creators: name: Moissenet, Florent
Publisher: name: Université de Genève
Year: 2025
Subjects: info:eu-repo/classification/ddc/617

description:
This thesis explores the advanced biomechanical analysis of native, injured, and reconstructed joints to optimise surgical procedures, specifically focusing on the development of innovative tools and methods in biomechanics.

My research spans three key axes: computational modelling, mechanical testing, and in vivo testing. Initially, my work centred on musculoskeletal modelling to estimate biomechanical parameters, offering insights into joint mechanics under various conditions. This approach allows for exploring “what-if” scenarios through virtual simulations, providing critical data on forces and movements within the human body. In vitro mechanical testing then plays a crucial role in evaluating joint function and the safety and efficacy of medical devices under controlled laboratory conditions. Through these tests, new surgical techniques and orthopaedic implants are assessed, particularly in the context of joint reconstruction and replacement surgeries, where precision and stability are paramount. My research also includes in vivo testing, incorporating clinical experimentation that bridges the gap between laboratory findings and real-world applications. For that, advanced tools and protocols are developed for pre- and post-operative assessment, especially in shoulder surgeries such as reversed total shoulder arthroplasty.

Overall, this work includes developing optimised computational models, robotic testing platforms, and in vivo protocols that significantly enhance the planning and execution of surgical procedures. Ultimately, this work aims to improve surgical outcomes by combining state-of-the-art biomechanics with practical clinical applications, focusing on optimising joint function, reducing patient recovery time, and enhancing the longevity of surgical implants.
Effect of video gaming on some central auditory processing abilities in school aged children, cross sectional study
Creators: name: Hazzaa, Nagwa Mohamed
name: Shalaby, Amani Ahmed
name: Eissa, Heba Mohamed El Sayed
name: Galal, Eman Mohamed
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: The effect of video games playing was variable in the literature. On one hand, it leads to boosting brain function in response speed, concentration, attention and spatial cognition, on the other hand, a certain type of games have negative effects on the cognition and proper processing of the central nervous system. In The best of the authors knowledge, there is no study investigated the effects of video gaming on central auditory processing in school-aged children, so the objective of this work is to study the effect of video gaming on some central auditory processing abilities in school-aged children. 50 children aged 6–12 years old, playing video games > 2 h/d, were subjected to psychometric, basic audiological evaluation, history of mobile phone use and Central Auditory Processing (CAP) Disorders. CAP evaluation included; Speech Intelligibility In Noise (SPIN), Arabic Dichotic Digits (DD), Memory and Auditory Vigilance tests. The highest percentage of abnormality in CAP abilities was in selective attention ability followed by sequential memory besides the negative correlation with duration (hours) of video gaming use per day. Video gaming has a negative impact on CAP abilities in children, particularly auditory attention and memory.
Multifractality Breaking from Bounded Random Measures
Creators: name: Moriconi, L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Multifractal systems usually have singularity spectra defined on bounded sets of Hölder exponents. As a consequence, their associated multifractal scaling exponents are expected to depend linearly upon statistical moment orders at high enough orders -- a phenomenon referred to as the {\it{linearization effect}}. Motivated by general ideas taken from models of turbulent intermittency and focusing on the case of two-dimensional systems, we investigate the issue within the framework of Gaussian multiplicative chaos. As verified by means of Monte Carlo simulations, it turns out that the linearization effect can be accounted for by Liouville-like random measures defined in terms of upper-bounded scalar fields. The coarse-grained statistical properties of Gaussian multiplicative chaos are furthermore found to be preserved in the linear regime of the scaling exponents. As a related application, we look at the problem of turbulent circulation statistics, and obtain a remarkably accurate evaluation of circulation statistical moments, recently determined with the help of massive numerical simulations.
description: 7 pages, 3 figures
Avoiding the bullies: The resilience of cooperation among unequals
Creators: name: Foley, Michael
name: Smead, Rory
name: Forber, Patrick
name: Riedl, Christoph
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computer Science and Game Theory (cs.GT)
subject: Theoretical Economics (econ.TH)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Economics and business
subject: FOS: Biological sciences

description: Can egalitarian norms or conventions survive the presence of dominant individuals who are ensured of victory in conflicts? We investigate the interaction of power asymmetry and partner choice in games of conflict over a contested resource. We introduce three models to study the emergence and resilience of cooperation among unequals when interaction is random, when individuals can choose their partners, and where power asymmetries dynamically depend on accumulated payoffs. We find that the ability to avoid bullies with higher competitive ability afforded by partner choice mostly restores cooperative conventions and that the competitive hierarchy never forms. Partner choice counteracts the hyper dominance of bullies who are isolated in the network and eliminates the need for others to coordinate in a coalition. When competitive ability dynamically depends on cumulative payoffs, complex cycles of coupled network-strategy-rank changes emerge. Effective collaborators gain popularity (and thus power), adopt aggressive behavior, get isolated, and ultimately lose power. Neither the network nor behavior converge to a stable equilibrium. Despite the instability of power dynamics, the cooperative convention in the population remains stable overall and long-term inequality is completely eliminated. The interaction between partner choice and dynamic power asymmetry is crucial for these results: without partner choice, bullies cannot be isolated, and without dynamic power asymmetry, bullies do not lose their power even when isolated. We analytically identify a single critical point that marks a phase transition in all three iterations of our models. This critical point is where the first individual breaks from the convention and cycles start to emerge.
On the exactness of the cavity method for Weighted b-Matchings on Arbitrary Graphs and its Relation to Linear Programs
Creators: name: Bayati, M.
name: Borgs, C.
name: Chayes, J.
name: Zecchina, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider the general problem of finding the minimum weight b-matching on arbitrary graphs. We prove that, whenever the linear programming relaxation of the problem has no fractional solutions, then the cavity or belief propagation equations converge to the correct solution both for synchronous and asynchronous updating.
Nonequilibrium Kubo Formula of Finite Conductor Connected to Reservoirs based on Keldysh Formalism
Creators: name: Fujii, Tatsuya
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that the density matrix for a finite conductor attached to reservoirs obtained by Keldysh formalism is of MacLennan-Zubarev form. On the basis of the fact that the density matrix is the invariant part proposed by Zubarev, it is shown that Keldysh formalism may describe the irreversible processes and steady-state feature of the system. An important consequence of the MacLennan-Zubarev form of the density matrix is a generalization of the Kubo formula in a nonequilibrium case. On the basis of the result, we propose the formula of shot noise and a nonequilibrium identity between differential conductance, noise power and shot noise as a generalized Nyquist-Johnson relation.
description: 8 pages, published version
DESTINATION MARKETING E WEB 2.0: ASPETTI STRATEGICI ED OPERATIVI NELLA LOGICA DEI SISTEMI TURISTICI LOCALI DELL'AREA PRE-ALPINA
Creators: name: Boccagna, Pasquale
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: Tourism can be described as one of the most technology-intensive industries where continuous organizational changes that are made are also the result of strong pressures from the innovative ICT. Strategic role of these last ones derives from the centrality of the "information" factor, from the speed with which information is communicated between the various parties, from the attributes of reliability, quality as well as security, on the background of the immaterial production, the inelasticity of supply and demand unpredictability. The exploitation of resources and capacity to organize the supply in a context of capital "Human" and "Social", cultural identity that a place that can express, are the basis of the identification of a community destination in the way of a Tourism Local System Tourism.  One of implicit attributes of the system is the presence of some form of organization capable of expressing a range characterized by territorial brand by image, by quality and  by coordination between the actors of the local supply. The competitiveness comes from the ability to express the supply power and make it visible on the market through processes of communication and information at both the single operator at the system level. The aim of this study is to identify a suitable framework for the development of regional marketing strategies and competitiveness to be applied to the local tourist systems in a range of theoretical perspectives. The human factor plays a key role in the development strategies of local tourist systems in the form of skills and capacity of exploiting local resources for generating stable and sustainable tourism. From this point of view, it is not sufficient the availability of valuable resources, rare and inimitable, but also requires the organizational skills of the offer players . The greater this ability, the better the results in terms of flows of tourists that the system is able to generate. The Service Logic was used to implement a model of competitiveness of the tourism system in four basic directions: the internal marketing, the Brand image area, the Quality and  the ICT.
Lepton Flavour Violation in Models with A4 Flavour Symmetry
Creators: name: Feruglio, Ferruccio
name: Hagedorn, Claudia
name: Lin, Yin
name: Merlo, Luca
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze lepton flavour violating transitions, leptonic magnetic dipole moments (MDMs) and electric dipole moments (EDMs) in a class of models characterized by the flavour symmetry A4 x Z3 x U(1)_{FN}, whose choice is motivated by the approximate tri-bimaximal mixing observed in neutrino oscillations. We construct the relevant low-energy effective Lagrangian where these effects are dominated by dimension six operators, suppressed by the scale M of new physics. All the flavour breaking effects are universally described by the vacuum expectation values of a set of spurions. We separately analyze both a supersymmetric and a general case. While the observed discrepancy delta a_mu in the anomalous MDM of the muon suggests M of order of a few TeV, several data require M above 10 TeV, in particular the limit on EDM of the electron. In the general case also the present limit on BR(mu -> e gamma) requires M >10 TeV, at least. The branching ratios for mu -> e gamma, tau -> mu gamma and tau -> e gamma are all expected to be of the same order. In the supersymmetric case the constraint from mu -> e gamma is softened and it can be satisfied by a smaller scale M. In this case both the observed delta a_mu and the current bound on BR(mu -> e gamma) can be satisfied, at the price of a rather small value for ||, of the order of a few percents, that reflects on a similar value for theta_{13}.
description: 29 pages, 1 figure
Light scalar at LHC: the Higgs or the dilaton?
Creators: name: Goldberger, Walter D.
name: Grinstein, Benjamin
name: Skiba, Witold
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is likely that the LHC will observe a color- and charge-neutral scalar whose decays are consistent with those of the Standard Model (SM) Higgs boson. The Higgs interpretation of such a discovery is not the only possibility. For example, electroweak symmetry breaking (EWSB) could be triggered by a spontaneously broken, nearly conformal sector. The spectrum of states at the electroweak scale would then contain a narrow scalar resonance, the pseudo-Goldstone boson of conformal symmetry breaking, with Higgs-like properties. If the conformal sector is strongly coupled, this pseudo-dilaton may be the only new state accessible at high energy colliders. We discuss the prospects for distinguishing this mode from a minimal Higgs boson at the LHC and ILC. The main discriminants between the two scenarios are (1) cubic self-interactions and (2) a potential enhancement of couplings to massless SM gauge bosons. A particularly interesting situation arises when the scale f of conformal symmetry breaking is approximately the electroweak scale v~246 GeV. Although in this case the LHC may not be able to tell apart a pseudo-dilaton from the Higgs boson, the self-interactions differ in a way that depends only on the scaling dimension of certain operators in the conformal sector. This opens the possibility of using dilaton pair production at future colliders as a probe of EWSB induced by nearly conformal new physics.
description: 7 pages, LaTeX
Neoclassical economics and labour migration theory : a Canadian perspective
Creators: name: Olligschlaeger, Andreas Matthias
Publisher: name: University of British Columbia
Year: 2010

description: This thesis examines the theoretical and empirical base of neoclassical migration analysis in economic geography. It is shown that the key assumptions of neoclassical migration analysis stem from the broader marginal equilibrium analysis and theory of resource allocation that defines the neoclassical school. Spefically, the hypothesis that neoclassical economics makes with respect to labour migration is that labour flows from low wage, high unemployment regions to regions with high wages and low unemployment, thus arriving at a state of equilibrium. This hypothesis is tested using Canadian labour migration data for 1976-1981. It is found that the hypothesis is unable to explain labour migration patterns in Canada because: first, the assumptions about human behaviour that the neoclassical model makes are both too simplistic and unrealistic, as are those about the nature of the economy, and second, migration seems to promote cumulative causation rather than move the system towards equilibrium.
Localization phenomena in Nonlinear Schrodinger equations with spatially inhomogeneous nonlinearities: Theory and applications to Bose-Einstein condensates
Creators: name: Perez-Garcia, Victor M.
name: Pardo, Rosa
Publisher: name: arXiv
Year: 2008
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study the properties of the ground state of Nonlinear Schrödinger Equations with spatially inhomogeneous interactions and show that it experiences a strong localization on the spatial region where the interactions vanish. At the same time, tunneling to regions with positive values of the interactions is strongly supressed by the nonlinear interactions and as the number of particles is increased it saturates in the region of finite interaction values. The chemical potential has a cutoff value in these systems and thus takes values on a finite interval. The applicability of the phenomenon to Bose-Einstein condensates is discussed in detail.
Democratic Lagrangians for Nonlinear Electrodynamics
Creators: name: Avetisyan, Zhirayr
name: Evnin, Oleg
name: Mkrtchyan, Karapet
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: Classical Physics (physics.class-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We construct a Lagrangian for general nonlinear electrodynamics that features electric and magnetic potentials on equal footing. In the language of this Lagrangian, discrete and continuous electric-magnetic duality symmetries can be straightforwardly imposed, leading to a simple formulation for theories with the $SO(2)$ duality invariance. When specialized to the conformally invariant case, our construction provides a manifestly duality-symmetric formulation of the recently discovered ModMax theory. We briefly comment on a natural generalization of this approach to $p$-forms in $2p+2$ dimensions.
description: 6 pages, slightly expanded, references added, accepted for publication in Physical Review Letters
The French trio for two dessus and bass 1686-1706
Creators: name: Page, Janet Kathleen
Publisher: name: University of British Columbia
Year: 2010

description: Trios for two treble instrumental parts and bass began to appear in France during the final years of the seventeenth century. Between 1686, when the first trios appeared as movements within Marc-Antoine Charpentier’s "Sonata," and 1706, when the quarrel over French and Italian musical styles had reached its height and Italianate trios had begun to be composed in France, many prominent French composers including Marin Marais, Francois Couperin and Jean-Fery Rebel wrote works for this combination. Taken as a group, these new French trios mirror the musical milieu within which they were composed; some are predominantly French in style, reflecting the continuing strength of French musical traditions in the period following the death of Lully, a few from the end of the period are highly Italianate, showing the influence of the increasingly popular Italian instrumental style, and a number are experimental works of mixed style, reflecting the ongoing discussion of the merits of each style and the attempts of composers to come to terms with the dichotomy between them. In this thesis, the French trio for two dessus and bass is examined from a number of different perspectives. Chapter 1 is an examination of the musical milieu of the trio, including performance traditions and musical thought, through documents and literary sources of the period. In Chapter 2, the French and Italian musical traditions that influenced the new trios are described. Chapter 3 is a discussion of the composers, the sources and the musical style of the new trios. Here the dichotomy between the French and Italian styles serves as the main point of reference, from which elements such as form, terminology, instrumentation, texture, melodic style and harmony are examined. The Appendix contains a selection of trios not available in modern editions. While it is not always possible to establish a direct line of influence for each stylistic element in each trio, many specific links can be shown, and interesting patterns are revealed. Each composer uses a slightly different combination of elements, and the resulting body of works is varied and interesting, illustrating the vitality of French musical life during this period.
Slow beams of massive molecules
Creators: name: Deachapunya, Sarayut
name: Fagan, Paul J.
name: Major, Andras G.
name: Reiger, Elisabeth
name: Ritsch, Helmut
name: Stefanov, Andre
name: Ulbricht, Hendrik
name: Arndt, Markus
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Slow beams of neutral molecules are of great interest for a wide range of applications, from cold chemistry through precision measurements to tests of the foundations of quantum mechanics. We report on the quantitative observation of thermal beams of perfluorinated macromolecules with masses up to 6000 amu, reaching velocities down to 11 m/s. Such slow, heavy and neutral molecular beams are of importance for a new class of experiments in matter-wave interferometry and we also discuss the requirements for further manipulation and cooling schemes with molecules in this unprecedented mass range.
description: 7 pages, 6 figures
ผลการใช้โปรแกรมการให้คำปรึกษาแบบกลุ่มเพื่อลดสภาวะ ของภาระทางปัญญาของนักศึกษา: การวิจัยแบบผสานวิธี
Creators: name: วิกานดา ชัยรัตน์
Publisher: name: Program in Political Science, Faculty of Humanities and Social Sciences, Surindra Rajabhat University
Year: 2023
Subjects: การปรึกษาแบบกลุ่ม
สภาวะของภาระทางปัญญา
ประสบการณ์ทางจิตใจ

description: วารสารการบริหารการปกครองและนวัตกรรมท้องถิ่น, 7, 3, 117-134
ศักยภาพชุมชนในการพัฒนาแหล่งท่องเที่ยวชุมชนยลวิถี ตำบลบ้านเชียง อำเภอหนองหาน จังหวัดอุดรธานี
Creators: name: สรัญญา เจริญศิริ
Publisher: name: Program in Political Science, Faculty of Humanities and Social Sciences, Surindra Rajabhat University
Year: 2023
Subjects: ศักยภาพ
การพัฒนาแหล่งท่องเที่ยว
ชุมชนยลวิถี

description: วารสารการบริหารการปกครองและนวัตกรรมท้องถิ่น, 7, 3, 135-154
The $(g-2)_μ$ anomaly, Higgs bosons and heavy neutrinos
Creators: name: Boyarkina, G. G.
name: Boyarkin, O. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the model based on the $SU (2)_L\times SU (2)_R\times U (1)_{B-L} $ gauge group and having the bidoublet and two triplets of the Higgs fields (left-right model) the Higgs sector impact on the value of the muon anomalous magnetic moment is considered. The contributions coming from the doubly charged Higgs bosons, the singly charged Higgs bosons and the lightest neutral Higgs boson are taken into account. The obtained value of the muon anomalous magnetic moment is the function of the Higgs boson masses and the Higgs boson couplings constants (CC's). We express the most of part of the CC's as the functions of the heavy neutrino sector parameters. We show that at the particular parameters values the model under study could explain the BNL'00 result.
qPCR Primer Information from Reproductive activation in honeybee (Apis mellifera) workers protects against abiotic and biotic stress
Creators: name: Kennedy, Anissa
name: Herman, Jacob
name: Rueppell, Olav
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60408 Genomics
subject: 60801 Animal Behaviour

description: Sequences and original references for the primers used to amplify our targets in the quantitative real time study
Orbital mixing and nesting in the bilayer manganites La$_{2-2x}$Sr$_{1+2x}$Mn$_2$O$_7$
Creators: name: Saniz, R.
name: Norman, M. R.
name: Freeman, A. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A first principles study of La$_{2-2x}$Sr$_{1+2x}$Mn$_2$O$_7$ compounds for doping levels $0.3\leq x\leq 0.5$ shows that the low energy electronic structure of the majority spin carriers is determined by strong momentum dependent interactions between the Mn $e_g$ $d_{x^2-y^2}$ and $d_{3z^2-r^2}$ orbitals, which in addition to an $x$ dependent Jahn-Teller distortion, differ in the ferromagnetic and antiferromagnetic phases. The Fermi surface exhibits nesting behavior that is reflected by peaks in the static susceptibility, whose positions as a function of momentum have a non-trivial dependence on $x$.
description: 4 pages, 5 figures, published
Modeling a Coronal Mass Ejection from an Extended Filament Channel. I. Eruption and Early Evolution
Creators: name: Lynch, Benjamin J.
name: Palmerio, Erika
name: DeVore, C. Richard
name: Kazachenko, Maria D.
name: Dahlin, Joel T.
name: Pomoell, Jens
name: Kilpua, Emilia K. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We present observations and modeling of the magnetic field configuration, morphology, and dynamics of a large-scale, high-latitude filament eruption observed by the Solar Dynamics Observatory. We analyze the 2015 July 9-10 filament eruption and the evolution of the resulting coronal mass ejection (CME) through the solar corona. The slow streamer-blowout CME leaves behind an elongated post-eruption arcade above the extended polarity inversion line that is only poorly visible in extreme ultraviolet (EUV) disk observations and does not resemble a typical bright flare-loop system. Magnetohydrodynamic (MHD) simulation results from our data-inspired modeling of this eruption compare favorably with the EUV and white-light coronagraph observations. We estimate the reconnection flux from the simulation's flare-arcade growth and examine the magnetic-field orientation and evolution of the erupting prominence, highlighting the transition from an erupting sheared-arcade filament channel into a streamer-blowout flux-rope CME. Our results represent the first numerical modeling of a global-scale filament eruption where multiple ambiguous and complex observational signatures in EUV and white light can be fully understood and explained with the MHD simulation. In this context, our findings also suggest that the so-called "stealth CME" classification, as a driver of unexpected or "problem" geomagnetic storms, belongs more to a continuum of observable/non-observable signatures than to separate or distinct eruption processes.
description: 22 pages, 14 figures, 2 tables, accepted for publication in ApJ
Toward a more realistic holographic QCD model
Creators: name: Huang, Mei
name: Yan, Qi-shu
name: Yang, Yi
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: By matching the $Dp-Dq$ system in type II superstring theory with the Regge trajectories of vector and axial-vector meson spectra, a possible 5-dimension metric of a $Dp-Dq$ soft-wall model has been determined. The dependence of the metric parameters on Regge trajectory parameters has been demonstrated. It is shown that the models defined in $Dp$ brane background for $p=3$ or 4 can be consistent with experimental data.
description: 8 pages, proceedings for the YITP International Symposium "Fundamental Problems in Hot and/or Dense QCD", March 3-6, 2008, Kyoto, Japan
Quantitative qPCR results from Reproductive activation in honeybee (Apis mellifera) workers protects against abiotic and biotic stress
Creators: name: Kennedy, Anissa
name: Herman, Jacob
name: Rueppell, Olav
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60408 Genomics
subject: 60801 Animal Behaviour

description: Boxplots of qPCR based quantification of specific targets
Quantifying the impact of subsurface in-situ observations at important Arctic and Nordic Seas gateways on the Arctic Supolar gyre sTateEstimate
Creators: name: Nguyen, An
Publisher: name: Zenodo
Year: 2019

description: Blue-Action and ASOF Workshop 2019 on "Representativeness of ocean observations and Flux calculations" held at the Danish Meteorological Institute in Copenhagen (DK) on 24 -26 April 2019. Invited talk.
description: The Blue-Action project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 727852
ทักษะความเข้าใจและใช้เทคโนโลยีดิจิทัลของครู สังกัดโรงเรียนพระปริยัติธรรมในจังหวัดสุรินทร์
Creators: name: สมเกียรติ เพ็ชรมาก
Publisher: name: Program in Political Science, Faculty of Humanities and Social Sciences, Surindra Rajabhat University
Year: 2023
Subjects: เทคโนโลยีดิจิทัล
ทักษะความเข้าใจและใช้เทคโนโลยีดิจิทัลของครู
โรงเรียนพระปริยัติธรรม

description: วารสารการบริหารการปกครองและนวัตกรรมท้องถิ่น, 7, 3, 155-170