cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Attractive and repulsive interactions in the one-dimensional swarmalator model
Creators: name: Hao, Baoli
name: Zhong, Ming
name: O'Keeffe, Kevin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We study a population of swarmalators, mobile variants of phase oscillators, which run on a ring and have both attractive and repulsive interactions. This one-dimensional (1D) swarmalator model produces several of collective states: the standard sync and async states as well as a splaylike "polarized" state and several unsteady states such as active bands or swirling. The model's simplicity allows us to describe some of the states analytically. The model can be considered as a toy model for real-world swarmalators such as vinegar eels and sperm which swarm in quasi-1D geometries.
A High Resolution Mosaic of Molecular Gas in Stephan's Quintet
Creators: name: Petitpas, Glen R.
name: Taylor, Christopher L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present high resolution CO J=1-0 observations of the molecular gas in the Hickson Compact Group Stephan's Quintet (HCG92). Our observations consist of multiple pointing and mosaics covering all the regions where CO and star formation has been detected. Within the 100'' field of view centered on the eastern-most tidal tail, we detect three clumps of emission that may be partially resolved at our resolution of 8''; two of these are new detections not previously seen in ISM studies of this region. Two of these clumps lie in the optical tidal tail, while the third lies to the southeast and is coincident with a large HI feature, but does not correspond to any features at other wavelengths. We also tentatively detect CO emission from the star forming regions in the ``Old Tail'' corresponding to recent star formation activity detected in recent UV and H$α$ observations. Observations of the rest of the compact group do not show detections even though strong emission was detected with single dish telescopes, which suggests the CO emission originates from a diffuse molecular gas cloud or from more at least three separate clumps with separations of greater than around 3 kpc.
description: 23 pages, 6 figures, to appear in the ApJ 1 November 2005, v633, 1 issue. Full resolution versions of figures available at http://cfa-www.harvard.edu/~gpetitpas/hcg92/
Quantum Measurement and Objective Classical Reality
Creators: name: Johnson, Vishal
name: Frank, Philipp
name: Enßlin, Torsten
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore quantum measurement in the context of Everettian unitary quantum mechanics and construct an explicit unitary measurement procedure. We propose the existence of prior correlated states that enable this procedure to work and therefore argue that correlation is a resource that is consumed when measurements take place. It is also argued that a network of such measurements establishes a stable objective classical reality.
description: 12 pages, 6 figures. Presented at the MaxEnt 23 conference
Translational and reorientational dynamics in deep eutectic solvents
Creators: name: Reuter, D.
name: Münzner, P.
name: Gainaru, C.
name: Lunkenheimer, P.
name: Loidl, A.
name: Böhmer, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We performed rheological measurements of the typical deep eutectic solvents (DESs) glyceline, ethaline, and reline in a very broad temperature and dynamic range, extending from the low-viscosity to the high-viscosity supercooled-liquid regime. We find that the mechanical compliance spectra can be well described by the random free-energy barrier hopping model, while the dielectric spectra on the same materials involve significant contributions arising from reorientational dynamics. The temperature-dependent viscosity and structural relaxation time, revealing non-Arrhenius behavior typical for glassy freezing, are compared to the ionic dc conductivity and relaxation times determined by broadband dielectric spectroscopy. For glyceline and ethaline we find essentially identical temperature dependences for all dynamic quantities. These findings point to a close coupling of the ionic and molecular translational and reorientational motions in these systems. However, for reline the ionic charge transport appears decoupled from the structural and reorientational dynamics, following a fractional Walden rule. Especially, at low temperatures the ionic conductivity in this DES is enhanced by about one decade compared to expectations based on the temperature dependence of the viscosity. The results for all three DESs can be understood without invoking a revolving-door mechanism previously considered as a possible charge-transport mechanism in DESs.
description: final accepted version of the manuscript
Stable TeV - Black Hole Remnants at the LHC: Discovery through Di-Jet Suppression, Mono-Jet Emission and a Supersonic Boom in the Quark-Gluon Plasma
Creators: name: Stoecker, Horst
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The production of Large Extra Dimension (LXD) Black Holes (BHs), with a new, fundamental mass scale of $M_f = 1$ TeV, has been predicted to occur at the Large Hadron Collider, LHC, with the formidable rate of $10^8$ per year in p-p collisions at full energy, 14 TeV, and at full luminosity. We show that such LXD-BH formation will be experimentally observable at the LHC by the complete disappearance of all very high $p_t$ ($> 500$ GeV) back-to-back correlated Di-Jets of total mass $M > M_f = 1$ TeV. We suggest to complement this clear cut-off signal at $M > 2*500$ GeV in the di-jet-correlation function by detecting the subsequent, Hawking-decay products of the LXD-BHs, namely either multiple high energy ($> 100$ GeV) SM Mono-Jets (i.e. away-side jet missing), sprayed off the evaporating BHs isentropically into all directions or the thermalization of the multiple overlapping Hawking-radiation in a Heckler-Kapusta-Plasma. Microcanonical quantum statistical calculations of the Hawking evaporation process for these LXD-BHs show that cold black hole remnants (BHRs) of Mass $\sim M_f$ remain leftover as the ashes of these spectacular Di-Jet-suppressed events. Strong Di-Jet suppression is also expected with Heavy Ion beams at the LHC, due to Quark-Gluon-Plasma induced jet attenuation at medium to low jet energies, $p_t < 200$ GeV. The (Mono-)Jets in these events can be used to trigger for Tsunami-emission of secondary compressed QCD-matter at well defined Mach-angles, both at the trigger side and at the awayside (missing) jet. The Machshock-angles allow for a direct measurement of both the equation of state EoS and the speed of sound $c_s$ via supersonic bang in the "big bang" matter.
description: 21 pages, 9 figures. accepted for publication in International Journal of Modern Physics D, added content in Section 5
Outbreak of Fasciola spp. causing zoonotic diseases
Creators: name: Sirikanda Thanasuwan
name: Supawadee Piratae
Publisher: name: Faculty of Agriculture
Year: 2019
Subjects: Outbreak, Fasciola hepatica, Fasciola gigantica, Fasciola spp.

description: Khon Kaen Agriculture Journal, 47, 5, 951-980
Complexity and sustainable development in the circumpolar north : positioning Canada in the Arctic Council
Creators: name: Cleveland, Randy Lee
Publisher: name: University of British Columbia
Year: 2009

description: In 1996, Canada assumed the initial two-year rotating chair of the Arctic Council; an unusual international regime of all eight Arctic states and three aboriginal organizations established to promote a broad cross-functional mandate of environmental protection and sustainable development. Coincidentally, 1995 amendments to Canada's Auditor Generals Act had required all major federal departments to prepare detailed sustainable development strategies. The Department of Indian Affairs and Northern Development had sponsored interdepartmental coordination in the development of a domestic Arctic strategy. Simultaneously, the Department of Foreign Affairs and International Trade had directed attention to a northern foreign policy. Canada was wellpositioned, then, to bring leadership to the Arctic Council promoting international cooperation that was consistent with Canadian aspirations. The first biennial Ministerial meeting held in Iqaluit, however, fell short of expectations. No sustainable development program framework was considered and only a few joint projects were conditionally adopted. Reasons for Canada's failure to facilitate more substantial progress included a lack of consistency and conceptual coherence in Canada's domestic and foreign policies, and a lack of political diplomacy and leadership in leveraging membership support for progress. An analysis of Canada's policy highlights conflicts between neoclassical and ecological economic biases within key federal departments. More importantly, an analysis based on far from-equilibrium complex systems reveals that Canada had made no effort to understand the systemic relationships between environmental, ecological, and social dimensions of sustainable development upon which to plan robust and resilient solutions. Finally, Canada had not analyzed its position in the global economic system or questioned the sustainability of this context. The thesis suggests that systemic transformation is inevitable and recommends that evolution of the global system requires internalization of dominant systemic relationships and the integration of the functionalist production of social meaning at regional scales. The circumpolar Arctic, given its key role in the regulation of biophysical planetary systems and its relatively untapped fuel and non-fuel resource reserves for economic expansion, has the potential to provide leadership in demonstrating revolutionary approaches to sustainable development and a regulatory function in the transition to global sustainability.
Quantum vacuum effects in non-relativistic quantum field theory
Creators: name: Edmonds, Matthew
name: Flachi, Antonino
name: Pasini, Marco
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nonlinearities in the dispersion relations associated with different interactions designs, boundary conditions and the existence of a physical cut-off scale can alter the quantum vacuum energy of a nonrelativistic system nontrivially. As a material realization of this, we consider a 1D-periodic rotating, interacting non-relativistic setup. The quantum vacuum energy of such a system is expected to comprise two contributions: a fluctuation-induced quantum contribution and a repulsive centrifugal-like term. We analyze the problem in detail within a complex Schoedinger quantum field theory with a quartic interaction potential and perform the calculations non-perturbatively in the interaction strength by exploiting the nonlinear structure of the associated nonlinear Schroedinger equation. Calculations are done in both zeta-regularization, as well as by introducing a cut-off scale. We find a generic, regularization-independent behavior, where the competition between the interaction and rotation can be balanced at some critical ring-size, where the quantum vacuum energy has a maxima and the force changes sign. The inclusion of a cut-off smoothes out the vacuum energy at small distance but leaves unaltered the long distance behavior. We discuss how this behavior can be tested with ultracold-atoms.
description: 10 pages, 3 figures
Uniting high strength with large ductility in an additively manufactured fine-grained aluminum alloy
Creators: name: Cha, Wenhao
name: Li, Gan
name: He, Xi
name: Li, Jie
name: Li, Daoxiu
name: Liu, Xiangfa
name: Zhu, Qiang
name: Liu, Sida
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Actualizing the near net-shaping of lightweight aluminum (Al) alloys with both superior mechanical performance and complex geometry remains challenging. To address this issue, novel Al–Ti–C–B (TCB) master alloy powders were tailored as effective inoculators and introduced into the AlSi10Mg alloy powders to promote the heterogeneous nucleation of α-Al during powder bed fusion using laser beam (PBF-LB), leading to pronounced heterogeneous microstructure with bimodal fine-grains and improved distribution of eutectic Si. The modified alloy with a more refined and homogeneous microstructure exhibited an excellent strength–ductility combination due to microstructure modification, outperforming most previously reported commercial Al–Si alloys. We have developed an effective TCB grain refiner (inoculant) for PBF-LB of Al alloys, which can lead to the pronounced grain refinement and enhanced tensile strength and ductility.
Thermodynamics and Phase Transitions of Electrolytes on Lattices with Different Discretization Parameters
Creators: name: Artyomov, Maxim N.
name: Kolomeisky, Anatoly B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Lattice models are crucial for studying thermodynamic properties in many physical, biological and chemical systems. We investigate Lattice Restricted Primitive Model (LRPM) of electrolytes with different discretization parameters in order to understand thermodynamics and the nature of phase transitions in the systems with charged particles. A discretization parameter is defined as a number of lattice sites that can be occupied by each particle, and it allows to study the transition from the discrete picture to the continuum-space description. Explicit analytic and numerical calculations are performed using lattice Debye-Hückel approach, which takes into account the formation of dipoles, the dipole-ion interactions and correct lattice Coulomb potentials. The gas-liquid phase separation is found at low densities of charged particles for different types of lattices. The increase in the discretization parameter lowers the critical temperature and the critical density, in agreement with Monte Carlo computer simulations results. In the limit of infinitely large discretization our results approach the predictions from the continuum model of electrolytes. However, for the very fine discretization, where each particle can only occupy one lattice site, the gas-liquid phase transitions are suppressed by order-disorder phase transformations.
description: Submitted to Molecular Physics
Cutting corners to suppress high-order modes in Mie resonator arrays
Creators: name: Haddadin, Zaid
name: Khan, Shahrose
name: Poulikakos, Lisa V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Mie resonators as lattice resonant metasurfaces have the capability to produce structural colour. However, design criteria for these metasurfaces are still being investigated. In this work, we numerically examine how the two-dimensional nanostructure shape in a lattice array affects the colorimetric response of the metasurface under linearly polarised light excitation. First, the transformation from a square-shaped to rectangle-shaped nanostructure array resulted in polarisation-sensitive metasurfaces with colorimetric outputs bound along a line on the CIE 1931 2-degree Standard Observer colour space. The bounds of the colorimetry line were tuneable to any desired chromatic range. Second, the removal of the corners in square- or rectangle-shaped nanostructures to create t-shaped nanostructure arrays displayed a dampening effect on the high-order resonance. Finally, we analytically determined that the colour saturation could increase when moving from rectangle-shaped to t-shaped nanostructure arrays. From these results, we present two design guidelines for lattice resonant metasurfaces: (1) Constructing the nanostructure to support fundamental resonances at different wavelengths enables two-colour-bound movement when excited by successive angles of linearly polarised light; (2) Removing portions of the nanostructure that only support high-order resonances dampens these modes while maintaining support for fundamental resonances. These results present first-principles guidelines for engineering nanoparticles in lattice resonant metasurfaces, offering a new toolbox for polarised-light sensing and colorimetric applications.
description: This is an unedited version of a Submitted Work in ACS Photonics, with 47 pages (9 main text; 38 supplementary), 25 figures (5 main text; 20 supplementary), and 5 tables (0 main text; 5 supplementary). Data and programming scripts are with the ACS Photonics submission, but not with the arXiv submission
Observing the changing surface structures of the active K giant sigma Gem with SONG
Creators: name: Korhonen, H.
name: Roettenbacher, R. M.
name: Gu, S.
name: Grundahl, F.
name: Andersen, M. F.
name: Henry, G. W.
name: Jessen-Hansen, J.
name: Antoci, V.
name: Pallé, P. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Aims: We aim to study the spot evolution and differential rotation in the magnetically active cool K-type giant star sigma Gem from broadband photometry and continuous spectroscopic observations that span 150 nights. Methods: We use high-resolution, high signal-to-noise ratio spectra obtained with the Hertzsprung SONG telescope to reconstruct surface (photospheric) temperature maps with Doppler imaging techniques. The 303 observations span 150 nights and allow for a detailed analysis of the spot evolution and surface differential rotation. The Doppler imaging results are compared to simultaneous broadband photometry from the Tennessee State University T3 0.4 m Automated Photometric Telescope. The activity from the stellar chromosphere, which is higher in the stellar atmosphere, is also studied using SONG observations of Balmer H alpha line profiles and correlated with the photospheric activity. Results: The temperature maps obtained during eight consecutive stellar rotations show mainly high-latitude or polar spots, with the main spot concentrations above latitude 45 deg. The spots concentrate around phase 0.25 near the beginning of our observations and around phase 0.75 towards the end. The photometric observations confirm a small jump in spot phases that occurred in February 2016. The cross-correlation of the temperature maps reveals rather strong solar-like differential rotation, giving a relative surface differential rotation coefficient of $α$ = 0.10 +/- 0.02. There is a weak correlation between the locations of starspots and enhanced emission in the chromosphere at some epochs.
description: 19 pages, 10 figures, accepted for publication in Astronomy & Astrophysics, in the published version the Tables B1 and B2 will only be available via CDS
Skyrmion-deriven topological spin and charge Hall effects in diffusive antiferromagnetic thin films
Creators: name: Zarezad, Amir N.
name: Barnaś, Józef
name: Dyrdał, Anna
name: Qaiumzadeh, Alireza
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate topological Hall effects in a metallic antiferromagnetic (AFM) thin film and/or at the interface of an AFM insulator-normal metal bilayer with a single skyrmion in the diffusive regime. To determine the spin and charge Hall currents, we employed a Boltzmann kinetic equation with both spin-dependent and spin-flip scatterings. The interaction between conduction electrons and static skyrmions is included in the Boltzmann equation via the corresponding emergent magnetic field arising from the skyrmion texture. We compute intrinsic and extrinsic contributions to the topological spin Hall effect and spin accumulation, induced by an AFM skyrmion. We show that although the spin Hall current vanishes rapidly outside the skyrmion, the spin accumulation can be finite at the edges far from the skyrmion, provided the spin diffusion length is longer than the skyrmion radius. In addition, We show that in the presence of a spin-dependent relaxation time, the topological charge Hall effect is finite and we determine the corresponding Hall voltage. Our results may help to explore antiferromagnetic skyrmions by electrical means in real materials.
description: 6 pages, 3 figures
$η\to π^0 γγ$ decay within a chiral unitary approach revisited
Creators: name: Oset, E.
name: Pelaez, J. R.
name: Roca, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In view of the recent experimental developments on the experimental side in the $η\to π^0 γγ$ decay, and the fact that the Particle Data Group in the on line edition of 2007 reports sizable changes of the radiative decay widths of vector mesons used as input in the theoretical calculations of \cite{eta}, a reevaluation of the decay width of the $η$ in this channel has been done, reducing its uncertainty by almost a factor of two. The new input of the PDG is used and invariant mass distributions and total widths are compared with the most recent results from AGS, MAMI and preliminary ones of KLOE. The agreement of the theory with the AGS and MAMI data is very good, both for the total rates as well as for the invariant mass distributions of the two photons.
Analysis and Implications of Non-Performing Assets on the Indian Banking Sector Post 1991
Creators: name: Aadhya Sawhney, Yash Asrani, Dolly D Mehta, Muskan Jain
Publisher: name: Zenodo
Year: 2024

description: The banking sector has undergone major changes after 1991 leading to inefficient credit management, where non-performing assets are one of the burning concerns for the Indian Banking sector. While NPAs are an indicator of the health for the banking sector, the whopping increase in the NPAs especially of Public Sector Banks at Rs. 7.27 lakh crore as of September 30, 2019, indicates otherwise. NPAs are also a basis for judging competence between banks. It affects the liquidity and profitability alongside posing a threat on the quality of assets and survival of banks. Furthermore, it impacts the economy and agricultural loans as well. This paper also highlights various external and internal causes of this distressing situation. The findings of various graphs and correlation revealed relative efficiency of private and public sector banks, which of course may be judged as the major reason for the resilience of Indian banking towards financial crisis. Hence, being a developing country, it is important for banks to manage credit risks and come up with measures to control the menace of NPAs for which some recommendations have been discussed as well. The findings indicate that banks with weaker liquidity and profitability ratios are more prone to higher NPAs, highlighting the critical need for effective risk management strategies. Additionally, the paper discusses the regulatory environment established by the Reserve Bank of India (RBI) and its impact on the banking sector's ability to manage NPAs. This research contributes valuable insights for policymakers, banking professionals, and investors, emphasizing the importance of continuous monitoring of financial ratios to mitigate risks associated with NPAs. The study underscores the necessity for proactive measures to enhance the resilience of banks in the face of growing asset quality challenges, ultimately aiming to foster a more stable and sustainable banking environment in India.
Sensitivity of the spectral form factor to short-range level statistics
Creators: name: Buijsman, Wouter
name: Cheianov, Vadim
name: Gritsev, Vladimir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The spectral form factor is a dynamical probe for level statistics of quantum systems. The early-time behaviour is commonly interpreted as a characterization of two-point correlations at large separation. We argue that this interpretation can be too restrictive by indicating that the self-correlation imposes a constraint on the spectral form factor integrated over time. More generally, we indicate that each expansion coefficient of the two-point correlation function imposes a constraint on the properly weighted time-integrated spectral form factor. We discuss how these constraints can affect the interpretation of the spectral form factor as a probe for ergodicity. We propose a new probe, which eliminates the effect of the constraint imposed by the self-correlation. The use of this probe is demonstrated for a model of randomly incomplete spectra and a Floquet model supporting many-body localization.
description: 6 pages, 2 figures
Characterizing the Shapes of Galaxy Clusters Using Moments of the Gravitational Lensing Shear
Creators: name: Schulz, A. E.
name: Hennawi, Joseph
name: White, Martin
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore the use of the tangential component of weak lensing shear to characterize the ellipticity of clusters of galaxies. We introduce an ellipticity estimator, and quantify its properties for isolated clusters from LCDM N-body simulations. We compare the N-body results to results from smooth analytic models. The expected distribution of the estimator for mock observations is presented, and we show how this distribution is impacted by contaminants such as noise, line of sight projections, and misalignment of the central galaxy used to determine the orientation of the triaxial halo. We examine the radial profile of the estimator and discuss tradeoffs in the observational strategy to determine cluster shape.
description: 17 pages, 6 figures; added references, corrected typos, matches published version
Quantum Phases of Attractive Matter Waves in a Toroidal Trap
Creators: name: Parola, A.
name: Salasnich, L.
name: Rota, R.
name: Reatto, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Investigating the quantum phase transition in a ring from a uniform attractive Bose-Einstein condensate to a localized bright soliton we find that the soliton undergoes transverse collapse at a critical interaction strength, which depends on the ring dimensions. In addition, we predict the existence of other soliton configurations with many peaks, showing that they have a limited stability domain. Finally, we show that the phase diagram displays several new features when the toroidal trap is set in rotation.
description: 6 pages, 5 figures. To be published in Phys. Rev. A
Psychological Well-being of Urban Grandparents Caring Grandchildren
Creators: name: Md. Shahariar Islam
Publisher: name: figshare
Year: 2021
Subjects: subject: 111714 Mental Health
subject: FOS: Health sciences

description: Introduction: Grandparents usually played an important role in the care of their grandchildren and often provide care and assistance to their grandchildren. Across the world, grandparents are principal caregivers or supplement other forms of extra family care and this experience may have an effect on their psychological well-being. Objective: The objective of this study was to assess the extent of psychological well- being of urban grandparents caring grandchildren. Methods: This cross-sectional study was conducted among grandparents over the period of one year from January to December 2018 among 171 participants. Participants were selected by purposive sampling; data were collected by face-to-face interview with a semi-structured questionnaire to observe socio-demographic characteristics, caregiving information and PSS, 3-item UCLA Loneliness scale, HADS scale for psychological well-being. Data was analyzed by IBM software-SPSS 25 version. Results: Study revealed that, 71% were grandmother and 49% were grandfather. There was statistical significant association between psychological well-being and gender (p<0.01). There was significant association between age group and psychological well-being and age was negatively correlated with stress (p< 0.01), loneliness (p< 0.05) and anxiety (0.01). In this study 75% were married and 25% were widowed/widower. Loneliness was significantly associated with marital status (p<0.01). Monthly family income was negatively correlated with loneliness (p<0.01) and depression (p<0.05). There was significant association between psychological well-being and duration of caregiving (p<0.01) and duration of caregiving was positively correlated with loneliness (p<0.01), anxiety (p<0.01), depression (p<0.01). In this study, 64% grandparents experienced problem during caring and 36% didn’t which was significantly associated with psychological well-being (p<0.01). Psychological well-being attributes (stress, loneliness, anxiety, depression) were significantly correlated with each other (p<0.01). Conclusion: The findings of this study revealed that there are some adverse consequences on grandparent’s psychological well-being. Effective measure should be taken for caregiver grandparents.
Ackermann and Goodstein go functorial
Creators: name: Aguilera, Juan P.
name: Freund, Anton
name: Rathjen, Michael
name: Weiermann, Andreas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03B30, 03F15, 03F40, 11A67

description: We present variants of Goodstein's theorem that are equivalent to arithmetical comprehension and to arithmetical transfinite recursion, respectively, over a weak base theory. These variants differ from the usual Goodstein theorem in that they (necessarily) entail the existence of complex infinite objects. As part of our proof, we show that the Veblen hierarchy of normal functions on the ordinals is closely related to an extension of the Ackermann function by direct limits.
Special Relativity and Reactions with Unstable Nuclei
Creators: name: Bertulani, C. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Dynamical relativistic effects are often neglected in the description of reactions with unstable nuclear beams at intermediate energies (E ~ 100 MeV/nucleon). Evidently, this introduces sizable errors in experimental analysis and theoretical descriptions of these reactions. This is particularly important for the experiments held in GANIL/France, MSU/USA, RIKEN/Japan and GSI/Germany. I review a few examples where relativistic effects have been studied in nucleus-nucleus scattering at intermediate energies.
description: 8 pages, 2 figures, proceedings of Workshop on "Reaction Mechanisms for Rare Isotope Beams" Michigan State University March 9-12,2005
Micro-mechanical behavior of a single grain with atomic-level variations in composition via additive manufacturing
Creators: name: Wang, Xin
name: Norman, Jacob
name: Zheng, Baolong
name: MacDonald, Benjamin
name: Lavernia, Enrique J.
name: Schoenung, Julie M.
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Developmental Biology
subject: Computational Biology

description: Additive manufacturing offers precise control over part geometry and material composition, making it ideal for creating functionally integrated materials (FIMs). A Ni-Al FIM was fabricated using directed energy deposition (DED) to investigate how local composition variations affect microstructure, precipitation, and mechanical behavior. Advanced microscopy characterization revealed a novel grain structure with distinct compositional regions and a composition transition interface. These distinct regions within a single grain led to abrupt changes in the deformation response, as demonstrated through in-situ micropillar compression. These findings underscore the potential of additive manufacturing to engineer material behavior at the microscale, advancing materials design and manufacturing. Towards additive manufacturing of functionally integrated materials, this study explores a novel approach to engineering the microstructure and mechanical behavior via spatial control of alloy composition within a single grain.
Gender-based Violence Among UK University Students and Staff: A Socio-ecological Framework
Creators: name: Jones, Cassandra
name: Skinner, Tina
name: Smith, Olivia
name: Gangoli, Geetanjali
name: Fenton, Rachel
Publisher: name: Zenodo
Year: 2020

description: Theories have been used to explain gender-based violence (GBV) in U.S. universities (e.g. Gervais, DiLillo and McChargue, 2014; Tewksbury and Mustaine's, 2001) but they have limited utility in UK universities, as the history, composition, geography, and culture of UK universities differs (Phipps and Smith, 2012; Stenning et al., 2012). Due to these differences, a theoretical framework relevant to UK universities is needed that can guide studies and contextualise findings. As a starting point, this working paper adapted Hagemann-White et al.’s (2010) framework, which was developed for the European Union (EU). To date, this framework is the most researched, demonstrated and wholistic model for the EU. The framework used an ecological model to identify and categorise factors facilitating and scaffolding GBV, including policies, sanctions, redress and implementation of laws, to provide nation states with a framework to guide developing and implementing policies that would more effectively prevent and combat GBV. This working paper aimed to tailor Hagemann-White et al.’s model to UK universities, using a more sophisticated understanding of intersectional (dis)advantage (such as ethnicity, gender, sexuality, disability, class, age), men and masculinities, peer-group support for violence, environmental time-space and power relations, and legal duties in prevention and response.
Biological and biochemical analyses of the distinctive intracellular signals activated by interleukin-4
Creators: name: Levings, Megan K.
Publisher: name: University of British Columbia
Year: 2009

description: Interleukin-4 (IL-4) is a type I cytokine which acts on multiple hemopoietic cells to promote an antibody-mediated response to infection. Dysregulated production or function of IL-4 can exacerbate diseases such as allergy, asthma and rheumatoid arthritis. In order to better understand the biochemical mechanisms by which IL-4 mediates its pleiotropic biological effects, I investigated two distinctive aspects of the intracellular signals activated by IL-4. First, IL-4 is different from most type I cytokines in its inability to activate Ras or Raf-1. IL-4 also fails to support cellular growth. I demonstrated that the signals provided by an active Ras or an inducibly active Raf-1 kinase could synergise with IL-4 to promote cell-cycle progression. Further investigation of the biochemical events associated with the stimulation of long-term growth showed that active Raf-1 not only synergised with IL-4 to stimulate growth, but also to increase levels of c-jun N-terminal kinase (JNK) activity. These observations raise the possibility that Raf-1 may be involved in regulating JNK activity, and that JNK may be involved in mediating certain effects of IL-4. Second, IL-4 and IL-13 are the only cytokines that activate the transcription factor STAT-6. I determined that activation of STAT-6 was required for IL-4- stimulated cell survival. However, I found evidence that this requirement for STAT-6 was indirect, and possibly related to STAT-6-dependent, IL-4-stimulated expression of the IL-4 receptor. I next investigated the hypothesis that STAT-6 was required for IL-4-mediated suppression of tumor necrosis factor α (TNFα) and interleukin-12 (IL-12) production in macrophages. When STAT-6 null macrophages were stimulated with lipopolysaccharide (LPS) and interferon γ (IFNγ), I continued to observe a significant inhibition of TNFα and IL-12 by IL- 4, suggesting that IL-4 activates distinct, STAT-6 independent, inhibitory paths. IFNγ antagonizes many of the effects of IL-4, and I determined that IFNγ may regulate the activity of STAT6 by altering expression of a STAT6 inhibitor, Bcl-6. Further investigation into the roles of JNK, Bcl-6 and novel, non-STAT-6-dependent pathways will be important for the design of strategies to therapeutically modulate the intracellular signals activated by IL-4.
Coherent anharmonicity transfer from matter to light in the THz regime
Creators: name: Arias, Mauricio
name: Triana, Johan F.
name: Delgado, Aldo
name: Herrera, Felipe
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Optical nonlinearities are fundamental in several types of optical information processing protocols. However, the high laser intensities needed for implementing phase nonlinearities using conventional optical materials represent a challenge for nonlinear optics in the few-photon regime. We introduce an infrared cavity quantum electrodynamics (QED) approach for imprinting nonlinear phase shifts on individual THz pulses in reflection setups, conditional on the input power. Power-dependent phase shifts on the order of $ 0.1\, π$ can be achieved with femtosecond pulses of only a few $μ$W input power. The proposed scheme involves a small number of intersubband quantum well transition dipoles evanescently coupled to the near field of an infrared resonator. The field evolution is nonlinear due to the dynamical transfer of spectral anharmonicity from material dipoles to the infrared vacuum, through an effective dipolar chirping mechanism that transiently detunes the quantum well transitions from the vacuum field, leading to photon blockade. We develop analytical theory that describes the dependence of the imprinted nonlinear phase shift on relevant physical parameters. For a pair of quantum well dipoles, the phase control scheme is shown to be robust with respect to inhomogeneities in the dipole transition frequencies and relaxation rates. Numerical results based on the Lindblad quantum master equation validate the theory in the regime where the material dipoles are populated up to the second excitation manifold. In contrast with conventional QED schemes for phase control that require strong light-matter interaction, the proposed phase nonlinearity works best in weak coupling, increasing the prospects for its experimental realization using current nanophotonic technology.
description: 25 pages, 5 figures
Gravitational tuning forks and hierarchical triple systems
Creators: name: Cardoso, Vitor
name: Duque, Francisco
name: Khanna, Gaurav
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study gravitational wave (GW) emission in the strong-field regime by a hierarchical triple system composed of a binary system placed in the vicinity of a supermassive black hole (SMBH). The LIGO-Virgo collaboration recently reported evidence for coalescences with this dynamical origin. These systems are common in galactic centers and thus are a target for the space-based LISA mission as well as other advanced detectors. Doppler shifts, aberration, lensing and strong amplitude modulations are features present in the GW signal from these systems, built into our framework and with no need for phenomenological patches. We find that the binary can resonantly excite the quasinormal modes of the SMBH, as in the resonant excitation of two tuning forks with matching frequencies. The flux of energy crossing the SMBH horizon can be significant, when compared with that from standard extreme-mass-ratio inspirals. Therefore, these triple systems are an outstanding probe of strong-field physics and of the BH nature of compact objects.
description: 6 pages, 4 figures, v2: version to appear in Physical Review D Letters
Molecular Quarkonium
Creators: name: Voloshin, M. B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I discuss topics related to four-quark states of the `molecular quarkonium' type, i.e. resonances that could be considered as (dominantly) made from a heavy meson and antimeson. Of the so far observed resonances such picture is very likely applicable to the state X(3872), and I also discuss its possible relevance to the peak near the $D^* {\bar D}^*$ threshold in $e^+e^-$ annihilation.
description: 9 pages, Talk at the Flavor Physics and CP Violation Conference, Vancouver 9-12 April 2006
In-situ synchrotron X-ray study on the deformation behavior at each stage of strain aging process in bake-hardenable low-carbon steel under tensile loading
Creators: name: Gu, Gang Hee
name: Kim, Yongju
name: Kwon, Hyeonseok
name: Lee, Jae Heung
name: Yi, Sangbong
name: Maawad, Emad
name: Ha, Changwan
name: Seo, Min Hong
name: Kim, Hyoung Seop
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: In this study, we comparatively analyzed the deformation behavior of the bake-hardenable steel across the strain aging stages using in-situ synchrotron X-ray diffraction (SXRD) experiments. The lattice strain and dislocation density evolutions evaluated from the in-situ SXRD patterns elucidated the diverse elastic and plastic deformation behaviors of the initial, pre-strained, and strain-aged states. This research, by leveraging a powerful real-time technique, enhances our understanding of strain aging and provides valuable insights for its future applications. We comparatively analyzed strain-aging stages on deformation behavior using in-situ synchrotron X-ray diffraction. This approach provides direct experimental evidence for mechanisms that could previously only be observed through simulations.
Kölner (Stadt-)Geschichten um 1800: Der Bücherkäufer
Creators: name: Edele, Tobias
Publisher: name: Zenodo
Year: 2024

description: Dieses Spiel entstand im Wintersemester 2023/24 im Rahmen eines Arbeitskurses am Historischen Institut der Universität zu Köln und basiert auf der Open Source Software Twine.

Um das Spiel zu starten, müssen Sie die Datei downloaden und entpacken. Die „.html“ Datei, die Sie in dem entpackten Ordner finden, lässt sich daraufhin mit jedem gebräuchlichen Internetbrowser öffnen.
Effects of addition of Fang (Caesalpinia sappan L.) extract powder on qualities and storage stability of reduced-nitrite Vienna sausage
Creators: name: Wiranpat Olanwanit
name: Thanakorn Rojanakorn
Publisher: name: Faculty of Agriculture
Year: 2019
Subjects: Vienna Sausage, Storage stability, Fang extract powder, Reduce nitrite

description: Khon Kaen Agriculture Journal, 47, 5, 1099-1112
Entanglement entropy in holographic moving mirror and Page curve
Creators: name: Akal, Ibrahim
name: Kusuki, Yuya
name: Shiba, Noburo
name: Takayanagi, Tadashi
name: Wei, Zixia
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate the time evolution of entanglement entropy in two dimensional conformal field theory with a moving mirror. For a setup modeling Hawking radiation, we obtain a linear growth of entanglement entropy and show that this can be interpreted as the production of entangled pairs. For a setup, which mimics black hole formation and evaporation, we find that the evolution follows the ideal Page curve. We perform these computations by constructing the gravity dual of the moving mirror model via holography. We also argue that our holographic setup provides a concrete model to derive the Page curve for black hole radiation in the strong coupling regime of gravity.
description: 8 pages, 7 figures, v2: references added
Classical Gravitational Bremsstrahlung from a Worldline Quantum Field Theory
Creators: name: Jakobsen, Gustav Uhre
name: Mogull, Gustav
name: Plefka, Jan
name: Steinhoff, Jan
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the recently established formalism of a worldline quantum field theory (WQFT) description of the classical scattering of two spinless black holes, we compute the far-field time-domain waveform of the gravitational waves produced in the encounter at leading order in the post-Minkowskian (weak field, but generic velocity) expansion. We reproduce previous results of Kovacs and Thorne in a highly economic way. Then using the waveform we extract the leading-order total radiated angular momentum and energy (including differential results). Our work may enable crucial improvements of gravitational-wave predictions in the regime of large relative velocities.
description: v3: additional supplementary material; accepted for publication in PRL