cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Kepler Flares IV: A Comprehensive Analysis of the Activity of the dM4e Star GJ 1243
Creators: name: Silverberg, Steven M.
name: Kowalski, Adam F.
name: Davenport, James R. A.
name: Wisniewski, John P.
name: Hawley, Suzanne L.
name: Hilton, Eric J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a comprehensive study of the active dM4e star GJ 1243. We use previous observations and ground-based echelle spectroscopy to determine that GJ 1243 is a member of the Argus association of field stars, suggesting it is $\sim 30-50$ Myr old. We analyze eleven months of 1-minute cadence data from Kepler, presenting Kepler flare frequency distributions, as well as determining correlations between flare energy, amplitude, duration, and decay time. We find that the exponent $α$ of the power-law flare energy distribution varies in time, primarily due to completeness of sample and the low frequency of high-energy flares. We also find a deviation from a single power law at high energy. We use ground-based spectroscopic observations simultaneous with the Kepler data to provide simultaneous photometric and spectroscopic analysis of three low-energy flares, the lowest-energy dMe flares with detailed spectral analysis to date on any star. The spectroscopic data from these flares extend constraints for radiative hydrodynamic (RHD) flare models to a lower energy regime than has previously been studied. We use this simultaneous spectroscopy and Kepler photometry to develop approximate conversions from the \textit{Kepler} bandpass to the traditional $U$ and $B$ bands. This conversion will be a critical factor in comparing any Kepler flare analyses to the canon of previous ground-based flare studies.
description: 13 pages, 12 figures, accepted for publication in ApJ
Extension of Configurational Polyhedra to Finite Temperature Property
Creators: name: Yuge, Koretaka
name: Kojima, Kazuya
name: Takeuchi, Kazuhito
name: Taikei, Tetsuya
Publisher: name: arXiv
Year: 2016
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Configurational polyhedora (CP) is a hyperpolyhedra on multidimensional configuration space, whose vertex (and edges) corresponds to upper or lower limit value of correlation functions for all possible atomic configuration on given lattice. In classical systems where physical property including internal energy and elastic modulus can be a linear map for structures considered, it is known that atomic configuration having highest (or lowerst) physical quantity should always locate on one of the vertices at absolute zero temperature. The present study extend the idea of CP to finite-temperature property (especially, focusing on internal energy), and successfully provides demonstration of how temperature dependence of internal energy in equilibrium state for alloys is interpreted in terms of the density of states for non-interacting system along specially selected direction on cofiguration space.
description: 4 figures
Scheduling in review
Creators: name: Budiono, Ira Adelina.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Photocurrent Enhancement of Graphene Photodetectors by Photon Tunneling of Light into Surface Plasmons
Creators: name: Maleki, Alireza
name: Cumming, Benjamin P.
name: Gu, Min
name: Downes, James E.
name: Coutts, David W.
name: Dawes, Judith M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate that surface plasmon resonances excited by photon tunneling through an adjacent dielectric medium enhance photocurrent detected by a graphene photodetector. The device is created by overlaying a graphene sheet over an etched gap in a gold film deposited on glass. The detected photocurrents are compared for five different excitation wavelengths, ranging from nm to nm. The photocurrent excited with incident p-polarized light (the case for resonant surface plasmon excitation) is significantly amplified in comparison with that for s-polarized light (without surface plasmon resonances). We observe that the photocurrent is greater for shorter wavelengths (for both s and p-polarizations) due to the increased photothermal current resulting from higher damping of surface plasmons at shorter wavelength excitation. Position-dependent Raman spectroscopic analysis of the optically-excited graphene photodetector indicates the presence of charge carriers near the metallic edge. In addition, we show that the polarity of photocurrent switches across the gap as the incident light spot moves across the gap. Graphene-based photodetectors offer a simple architecture which can be fabricated on dielectric waveguides to exploit the plasmonic photocurrent enhancement of the evanescent field for detection. Applications for these devices include photo-detection, optical sensing and direct plasmonic detection.
description: 14 pages, 6 figures
Shift charge and spin photocurrents in Dirac surface states of topological insulator
Creators: name: Kim, Kun Woo
name: Morimoto, Takahiro
name: Nagaosa, Naoto
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The generation of photocurrent in condensed matter is of main interest for photovoltaic and optoelectronic applications. Shift current, a nonlinear photoresponse, has attracted recent intensive attention as a dominant player of bulk photovoltaic effect in ferroelectric materials. In three dimensional topological insulators $\text{Bi}_2\text{X}_3$ (X: Te, Se), we find that Dirac surface states with a hexagonal warping term carry shift current by linearly polarized light. In addition, shift spin-current is introduced with the time-reversal symmetry breaking perturbation. The estimate for the magnitudes of the shift charge- and spin-currents are 0.13$I_0$ and 0.21$I_0$(nA/m) with the intensity of light $I_0$ measured in $(\text{W}/\text{m}^2)$, respectively, which can offer a useful method to generate these currents efficiently.
description: 12 pages including supplementary information, 2 figures
Goldstino condensation at large N
Creators: name: Farakos, Fotis
name: Morittu, Matteo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the standard fermionic 4D Volkov-Akulov action with N global non-linear supersymmetries. We find that the stationary points of the system are described by an effective potential, written in terms of two composite real scalar fields, which approaches the exact quantum effective potential in the large N limit. We identify the existence of at least two stationary points, one representing the original supersymmetry breaking configuration and the other one corresponding to goldstino condensation, where supersymmetry is restored in the deep IR.
description: 26 pages, v2, accepted for publication, small corrections and references added
Paniscus latro Holmgren
Creators: name: Fullaway, D. T.
Publisher: name: Zenodo
Year: 1946
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Paniscus
Paniscus latro

description: 4. Paniscus latro Holmgren, Freg. Eugenies Resa, Ins. 6: 412, 1868; Fullaway, Haw. Ent. Soc., Proc. 2 (5): 289, 1913; Morley, Ichn. Brit. Mus. 2: 124, 1913. Piti, Sept. 13, Nov. 12, 22, at light, three specimens, Swezey. This ophionid was described from Guam. According to Morley, the F;aniscus samoanus Kohl described from Upolu, Samoa, in 1905 is the same species.
description: Published as part of Fullaway, D. T., 1946, Ichneumonidae, Evaniidae, And Braconidae Of Guam, pp. 221-227 in Insects of Guam II, Honolulu, Hawaii :Bernice P. Bishop Museum on page 222, DOI: 10.5281/zenodo.5156759
Cumulants of Net-Proton, Net-Kaon and Net-Charge Multiplicity Distributions in Au+Au Collisions at RHIC BES Energies from UrQMD Model
Creators: name: Xu, Ji
name: Yu, Shili
name: Liu, Feng
name: Luo, Xiaofeng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Fluctuations of conserved quantities are sensitive observables to probe the signature of QCD phase transition and critical point in heavy-ion collisions. With the UrQMD model, we have studied the centrality and energy dependence of various order cumulants and cumulant ratios (up to fourth order) of net-proton,net-charge and net-kaon multiplicity distributions in Au+Au collisions at $\sqrt{s_{NN}}$= 7.7, 11.5, 19.6, 27, 39, 62.4, 200 GeV. The model results show that the production mechanism of the particles and anti-particles have significant impacts on the cumulants of net-particles multiplicity distributions and show strong energy dependence. We also made comparisons between model calculations and experimental data measured in the first phase of the beam energy scan (BES) program by the STAR experiment at RHIC. The comparisons indicate that the baryon conservation effect strongly suppress the cumulants of net-proton distributions at low energies and the non-monotonic energy dependence for the net-proton {\KV} at the most central Au+Au collisions measured by the STAR experiment can not be described by the UrQMD model. Since there has no physics of QCD phase transition and QCD critical point implemented in the UrQMD, the model results provide us baselines and qualitative estimates about the non-critical background contributions to the fluctuations observables in heavy-ion collisions.
description: 9 pages, 10 figures
Exponential unitary integrators for nonseparable quantum Hamiltonians
Creators: name: Ciric, Maximilian
name: Bondar, Denys I.
name: Steuernagel, Ole
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum Hamiltonians containing nonseparable products of non-commuting operators, such as $\hat{\bf x}^m \hat{\bf p}^n$, are problematic for numerical studies using split-operator techniques since such products cannot be represented as a sum of separable terms, such as $T(\hat{\bf p}) + V(\hat{\bf x})$. In the case of classical physics, Chin [Phys. Rev. E $\bf 80$, 037701 (2009)] developed a procedure to approximately represent nonseparable terms in terms of separable ones. We extend Chin's idea to quantum systems. We demonstrate our findings by numerically evolving the Wigner distribution of a Kerr-type oscillator whose Hamiltonian contains the nonseparable term $\hat{\bf x}^2 \hat{\bf p}^2 + \hat{\bf p}^2 \hat{\bf x}^2$. The general applicability of Chin's approach to any Hamiltonian of polynomial form is proven.
description: Fixed typos and extended discussion (6 pages, 1 figure)
Non-Profit Organizations Branding on a Digital Platform: An Ethnomethodological Study
Creators: name: Filomeno, Bethoven M.
Publisher: name: Zenodo
Year: 2023

description: Non-profit organizations are entities whose aim is to set programs and initiatives for the benefit of the public Conducting research on non-profits in branding establishes a robust identity that fosters elevated levels of trust, support, and engagement among its primary stakeholders, namely the public. In terms of communication, it creates and establishes a unique position that contributes to the organization’s long-term success and impact. This research aims to explore the branding practices done through public relations
 of a non-profit organization in Dubai using social media and to discover what intent these practices accomplish. Additionally, the purpose of this study is to provide insights to communication practitioners and stakeholders on the value of branding in various activities and engagements. As a research framework, ethnomethodology was used, and this study utilized the qualitative research method specifically using a conversation analysis (CA) approach. The study centered around a non-profit organization situated in Dubai, whose identity has been anonymized in line with ethical research considerations. The data enclosed within brackets was extracted from the organization's social media platform, specifically their Facebook Page. This data encompassed three distinct types of social media content: video reels, infographics, and images. The conversation between the author and followers from each post was analyzed using the principles of conversational analysis (CA). The organization employed a range of branding techniques through public relations, leveraging social media. These practices encompassed strategies such as content publishing, public affairs, and publicity efforts. These findings indicates that there are more possibilities for communications industry practitioners to improve and discover new approaches to communicate important information and campaigns, as well as open ideas to evaluate current practices to develop programs for government and private
 entities globally.
Charged fermions coupled to $\mathbb{Z}_2$ gauge fields: Superfluidity, confinement and emergent Dirac fermions
Creators: name: Gazit, Snir
name: Randeria, Mohit
name: Vishwanath, Ashvin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider a 2+1 dimensional model of charged fermions coupled to a $\mathbb{Z}_2$ gauge field, and study the confinement transition in this regime. To elucidate the phase diagram of this model, we introduce a method to handle the Gauss law constraint within sign problem free determinantal quantum Monte Carlo, at any charge density. For generic charge densities, $\mathbb{Z}_2$ gauge fluctuations mediate pairing and the ground state is a gapped superfluid. Superfluidity also appears in the confined phase. This is reminiscent of the BCS-BEC crossover, except that a true zero temperature transition occurs here, with the maximum $T_c$ achieved near the transition. At half-filling also one obtains a large Fermi surface which is gapped at zero temperature. However, on increasing fermion hopping a $π$-flux phase is spontaneously generated, with emergent Dirac fermions that are stable against pairing. In contrast to a Fermi liquid of electrons, the change in Fermi surface volumes of the $\mathbb{Z}_2$ fermions occurs without the breaking of translation symmetry. Unexpectedly, the numerics indicate a single continuous transition between the deconfined Dirac phase and the confined superfluid, in contrast to the naive expectation of a split transition, where a gap to fermions precedes confinement.
description: 16 pages, 14 figures
USE OF HUMOR TO REDUCE ANXIETY AMONG MASECTOMIZED PATIENTS IN A TERTIARY HOSPITAL IN METRO MANILA, PHILIPPINES
Creators: name: Mabaet, Liliana Marie
Publisher: name: Zenodo
Year: 2023
Subjects: Breast cancer
Humor
Anxiety
Humor intervention
Mastectomy

description: The most frequent malignancy to strike women is breast cancer. Greater worry about other body parts being removed has been sparked by mastectomy as a surgical intervention for women with breast cancer. It is difficult for the patients that their body image may be altered after mastectomy, and many women find their self-esteem injured. Women experience severe mental, emotional, and physical stress following a catastrophic breast cancer diagnosis. Pre-operative anxiety occurs in patients scheduled for mastectomy, and nurses must address this as part of nursing care. The use of comedy video clip as humor intervention to lessen anxiety among breast cancer patients undergoing mastectomy in the Philippines has not yet been studied. Filipinos are known to be amiable and joyful in stressful situations. This study aimed to determine the humor profile of Filipino breast cancer patients scheduled for mastectomy and to describe the level of anxiety before and after humor intervention. Humor intervention was introduced to 41 selected patients who were diagnosed with breast cancer at Stages 1 to 4 for the first time and who underwent mastectomy. Sequential explanatory mixed methodology was utilized in the study. Qualitative analysis was done on the outcomes of the focus group discussion among mastectomized patients. Results showed that breast cancer patients frequently find humor in everyday situations and that humor intervention was found to lessen levels of stress, anxiety, and sadness among mastectomized patients. Laughter and joy are the hallmarks of humor. It is recommended that humor intervention be made available among mastectomized patients to decrease anxiety and provide self-healing to their breast cancer journey.
description: Master's thesis.
High-precision limit on variation in the fine-structure constant from a single quasar absorption system
Creators: name: Kotuš, Srđan M.
name: Murphy, Michael T.
name: Carswell, Robert F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The brightest southern quasar above redshift $z=1$, HE 0515$-$4414, with its strong intervening metal absorption-line system at $z_{abs}=1.1508$, provides a unique opportunity to precisely measure or limit relative variations in the fine-structure constant ($Δα/α$). A variation of just $\sim$3 parts per million (ppm) would produce detectable velocity shifts between its many strong metal transitions. Using new and archival observations from the Ultraviolet and Visual Echelle Spectrograph (UVES) we obtain an extremely high signal-to-noise ratio spectrum (peaking at S/N $\approx250$ pix$^{-1}$). This provides the most precise measurement of $Δα/α$ from a single absorption system to date, $Δα/α=-1.42\pm0.55_{\rm stat}\pm0.65_{\rm sys}$ ppm, comparable with the precision from previous, large samples of $\sim$150 absorbers. The largest systematic error in all (but one) previous similar measurements, including the large samples, was long-range distortions in the wavelength calibration. These would add a $\sim$2 ppm systematic error to our measurement and up to $\sim$10 ppm to other measurements using Mg and Fe transitions. However, we corrected the UVES spectra using well-calibrated spectra of the same quasar from the High Accuracy Radial velocity Planet Searcher (HARPS), leaving a residual 0.59 ppm systematic uncertainty, the largest contribution to our total systematic error. A similar approach, using short observations on future, well-calibrated spectrographs to correct existing, high S/N spectra, would efficiently enable a large sample of reliable $Δα/α$ measurements. The high S/N UVES spectrum also provides insights into analysis difficulties, detector artifacts and systematic errors likely to arise from 25-40-m telescopes.
description: 27 pages, 10 figures. Accepted by MNRAS. Quasar spectra and absorption profile fits are available at https://doi.org/10.5281/zenodo.51715
Isospin-breaking corrections to light-meson leptonic decays from lattice simulations at physical quark masses
Creators: name: Boyle, Peter
name: Di Carlo, Matteo
name: Erben, Felix
name: Gülpers, Vera
name: Hansen, Maxwell T.
name: Harris, Tim
name: Hermansson-Truedsson, Nils
name: Hodgson, Raoul
name: Jüttner, Andreas
name: hÓgáin, Fionn Ó
name: Portelli, Antonin
name: Richings, James
name: Yong, Andrew Zhen Ning
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The decreasing uncertainties in theoretical predictions and experimental measurements of several hadronic observables related to weak processes, which in many cases are now smaller than $\mathrm{O}(1\%)$, require theoretical calculations to include subleading corrections that were neglected so far. Precise determinations of leptonic and semi-leptonic decay rates, including QED and strong isospin-breaking effects, can play a central role in solving the current tensions in the first-row unitarity of the CKM matrix. In this work we present the first RBC/UKQCD lattice calculation of the isospin-breaking corrections to the ratio of leptonic decay rates of kaons and pions into muons and neutrinos. The calculation is performed with $N_\mathrm{f}=2+1$ dynamical quarks close to the physical point and domain wall fermions in the Möbius formulation are employed. Long-distance QED interactions are included according to the $\mathrm{QED_L}$ prescription and the crucial role of finite-volume electromagnetic corrections in the determination of leptonic decay rates, which produce a large systematic uncertainty, is extensively discussed. Finally, we study the different sources of uncertainty on $|V_\mathrm{us}|/|V_\mathrm{ud}|$ and observe that, if finite-volume systematics can be reduced, the error from isospin-breaking corrections is potentially sub-dominant in the final precision of the ratio of the CKM matrix elements.
description: 66 pages, 23 figures and 4 tables
Characterization of ultracold neutron production in thin solid deuterium films at the PSI Ultracold Neutron source
Creators: name: Bison, G.
name: Blau, B.
name: Chen, W.
name: Chiu, P. -J.
name: Daum, M.
name: Doorenbos, C.
name: Hild, N.
name: Kirch, K.
name: Kletzl, V.
name: Lauss, B.
name: Pais, D.
name: Rienäcker, I.
name: Ries, D.
name: Schmidt-Wellenburg, P.
name: Talanov, V.
name: Zsigmond, G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We determined the ultracold neutron (UCN) production rate by superthermal conversion in the solid deuterium (sD$_2$) moderator of the UCN source at the Paul Scherrer Institute (PSI). In particular, we considered low amounts of less than $20\,$mol of D$_2$, deposited on the cooled moderator vessel surfaces in thin films of a few mm thickness. We measured the isotopic ($ c_\text{HD} < 0.2 \, \% $) and isomeric ($ c_\text{para} \le 2.7 \, \% $) purity of the deuterium to conclude that absorption and up-scattering at $5\,$K have a negligible effect on the UCN yield from the thin films. We compared the calculated UCN yield based on the previously measured thermal neutron flux from the heavy water thermal moderator with measurements of the UCN count rates at the beamports. We confirmed our results and thus demonstrate an absolute characterization of the UCN production and transport in the source by simulations.
Multiple Service Chain Placement and Routing in a Network-enabled Cloud
Creators: name: Gupta, Abhishek
name: Jaumard, Brigitte
name: Tornatore, Massimo
name: Mukherjee, Biswanath
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Network Function Virtualization (NFV) aims to abstract the functionality of traditional proprietary hardware into software as Virtual Network Functions (VNFs), which can run on commercial off the shelf (COTS) servers. Besides reducing dependency on proprietary support, NFV helps network operators to deploy multiple services in a agile fashion. Service deployment involves placement and in sequence routing through VNFs comprising a Service Chain (SC). Our study is the first to focus on the computationally complex problem of multiple VNF SC placement and routing while considering VNF service chaining explicitly. We propose a novel column generation model for placing multiple VNF SCs and routing, which reduces the computational complexity of the problem significantly. Our aim here is to determine the ideal NFV Infrastructure (NFVI) for minimizing network resource consumption. Our results indicate that a Network enabled Cloud (NeC) results in lower networkresource consumption than a centralized NFVI (e.g., Data Center) while avoiding infeasibility with a distributed NFVI.
Kolmogorov Space in Time Series Data
Creators: name: Kanjamapornkul, K.
name: Pinčák, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: FOS: Economics and business

description: We provide the proof that the space of time series data is a Kolmogorov space with $T_{0}$-separation axiom using the loop space of time series data. In our approach we define a cyclic coordinate of intrinsic time scale of time series data after empirical mode decomposition. A spinor field of time series data comes from the rotation of data around price and time axis by defining a new extradimension to time series data. We show that there exist hidden eight dimensions in Kolmogorov space for time series data. Our concept is realized as the algorithm of empirical mode decomposition and intrinsic time scale decomposition and it is subsequently used for preliminary analysis on the real time series data.
description: 22 pages, 20 figures
Radiative phase space extensions at all orders in r for self-dual Yang-Mills and Gravity
Creators: name: Nagy, Silvia
name: Peraza, Javier
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Working in the self-dual sector for Yang-Mills and gravity, we show how to construct an extended phase space at null infinity, to all orders in the radial expansion. This formalises the symmetry origin of the infrared behaviour of these theories to all sub-leading orders. As a corollary, we also derive a double copy mapping from a subset of YM gauge transformations to a subset of diffeomorphisms to all orders in the transformation parameters, which to our knowledge has not been presented before in the literature.
description: 35 pages, 2 figures
"Exploring the Impact of Tax Reform (TRAIN Law) on Financially-Struggling households: A Qualitative Analysis"
Creators: name: SEBULLEN, MICHAEL
name: Alejandrino, Janice
Publisher: name: figshare
Year: 2023
Subjects: Socio-economic development
Economic development policy

description: This qualitative research study looked into the effects of the Tax Reform for Acceleration and Inclusion (TRAIN) Act on families from the low-income class in Baguio City. An in-depth and semi-structured interview was conducted with twelve participants who were Cordilleran’s from poor income class families. Three themes were formulated after collecting the data: the impact on basic needs, such as the reduction of their budget for food and the payment for utilities and debts; the effect on mental and emotional well-being, such as anxiety, stress, and depression due to financial problems; and resulting poverty. It can be concluded that the low-income class families became poorer as a result of the implementation of the TRAIN law. The results show that the TRAIN law has a disproportionately negative impact on the poor, who must limit their spending on necessities like food in order to live, including paying debts and utilities bills. Additionally, it has an impact on a person's mental health and wellbeing by causing difficulties with anxiety, stress, and sadness. Therefore, it can be said that once TRAIN was implemented, low-income families become even poorer.
Project description Master thesis project: The role of the ion channels Piezo1 and TRPV4 in placental endothelial dysfunction in preeclampsia – tracking nitric oxide production
Creators: name: Allerkamp, Hanna
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 329999
subject: Other biomedical and clinical sciences not elsewhere classified

description: Project description of a Master thesis project in the Placenta Lab at the Medical Universtiy of Graz, Austria
Single Controller Stochastic Games for Optimized Moving Target Defense
Creators: name: Eldosouky, AbdelRahman
name: Saad, Walid
name: Niyato, Dusit
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Moving target defense (MTD) techniques that enable a system to randomize its configuration to thwart prospective attacks are an effective security solution for tomorrow's wireless networks. However, there is a lack of analytical techniques that enable one to quantify the benefits and tradeoffs of MTDs. In this paper, a novel approach for implementing MTD techniques that can be used to randomize cryptographic techniques and keys in wireless networks is proposed. In particular, the problem is formulated as a stochastic game in which a base station (BS), acting as a defender seeks to strategically change its cryptographic techniques and keys in an effort to deter an attacker that is trying to eavesdrop on the data. The game is shown to exhibit a single-controller property in which only one player, the defender, controls the state of the game. For this game, the existence and properties of the Nash equilibrium are studied, in the presence of a defense cost for using MTD. Then, a practical algorithm for deriving the equilibrium MTD strategies is derived. Simulation results show that the proposed game-theoretic MTD framework can significantly improve the overall utility of the defender, while enabling effective randomization over cryptographic techniques.
description: Accepted in IEEE ICC 2016
Efficient Estimation of k for the Nearest Neighbors Class of Methods
Creators: name: Lodwich, Aleksander
name: Shafait, Faisal
name: Breuel, Thomas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The k Nearest Neighbors (kNN) method has received much attention in the past decades, where some theoretical bounds on its performance were identified and where practical optimizations were proposed for making it work fairly well in high dimensional spaces and on large datasets. From countless experiments of the past it became widely accepted that the value of k has a significant impact on the performance of this method. However, the efficient optimization of this parameter has not received so much attention in literature. Today, the most common approach is to cross-validate or bootstrap this value for all values in question. This approach forces distances to be recomputed many times, even if efficient methods are used. Hence, estimating the optimal k can become expensive even on modern systems. Frequently, this circumstance leads to a sparse manual search of k. In this paper we want to point out that a systematic and thorough estimation of the parameter k can be performed efficiently. The discussed approach relies on large matrices, but we want to argue, that in practice a higher space complexity is often much less of a problem than repetitive distance computations.
description: Technical Report, 16p, alternative source: http://lodwich.net/Science.html
Spin polarization and alignment in heavy-ion collisions
Creators: name: Singha, Subhash
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We report the measurements of global spin polarization of hyperons ($P_Λ$) from FAIR, RHIC and LHC energies. The $P_Λ$ continue to follow an increasing trend at $\sqrt{s_{\mathrm NN}}$ < 7.7 GeV indicating that enormous vorticity prevail even in hadronic dominant region. New measurements of local spin polarization ($P_{z,2}$) from isobar collisions follow the same pattern observed in previous RHIC and LHC energies. An observable motivated by predicted baryonic Spin Hall Effect, the net local polarization ($P_{z,2}^{\mathrm{net}}$), shows negative value in Au+Au collisions at $\sqrt{s_{\mathrm NN}}$ = 19.6 and 27 GeV. The first $P_{z}$ measurement with respect to third order harmonic in 200 GeV RHIC isobar collisions show a non-zero sine modulation, indicating the presence of complex vortical structure in the medium. Surprising new patterns of spin alignment ($ρ_{00}$) for various vector mesons ($K^{*0}$, $K^{*\pm}$, $ϕ$ and $J/ψ$) emerged at both RHIC and LHC energies. The large deviation in $ρ_{00}$ of several species poses challenge to the theory.
description: SQM 2022 proceedings
Anatomy of spin wave driven magnetic texture motion via magnonic torques
Creators: name: Lan, Jin
name: Ai, Hanxu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The interplay between spin wave and magnetic texture represents the information exchange between the fast and slow dynamical parts of magnetic systems. Here we formulate a set of magnonic torques acting on background magnetic texture, by extracting time-invariant information from the fast precessing spin waves. Under the frame of magnonic torques, we use theoretical formulations and micromagnetic simulations to investigate the spin wave driven domain wall motion in two typical symmetry-breaking situations: the rotational symmetry broken by the Dzyaloshinkii-Moriya interaction, and the translational symmetry broken by magnetic damping. The torque-based microscopic analyses provide compact yet quantitative tools to reinterpret the magnetic texture dynamics induced by spin wave, beyond the conventional framework of global momentum conservation.
description: 12 pages, 4 figures
title: Co-creation of learning in experiential entrepreneurial university education
titleType: Other
Creators: name: Teneva, Irena
Publisher: name: University of Dundee
Year: 2023

description: Co-creation, which embodies society’s collective intelligence, creativity and citizenship can play a key role in solving global challenges. Entrepreneurial competencies like opportunity identification, creativity, vision, teamwork, uncertainty tolerance, leadership, self-awareness, motivation, and perseverance are also seen as a gateway to an advanced society. Both co-creation and entrepreneurial learning are social processes of experiential nature, widely discussed and researched. Thus, the challenges with applying them in higher education programs have transpired - leveraging on the combination of collaboration skills, team cohesion, autonomy, self-direction, and stakeholder engagement. While both co-creation and entrepreneurial learning have been explored in the context of higher education, they have not been seen as an integrated and creative practice which can mobilize learners, universities, and local communities to jointly create value.

Consequently, the research asks: how does co-creation occur in experiential entrepreneurial university education? It explores a degree program, where learners, staff, alumni, and local businesses co-create educational value, cultivated and accredited by the university. Drawing on social constructivism and critical pedagogies, the research sees co-creation as a learning approach that challenges some preconceptions about entrepreneurial learning and its affordances in university settings. The findings indicate learning outcomes in the form of increased self-awareness, adaptability, empowerment, and extended aspirations for the future.

The study makes an original contribution to the designing of a model of co-creation in experiential entrepreneurial university education - connecting pedagogical prerequisites, environmental factors, co-creation practices and learning outcomes. It also contributes to the understanding of value and its meaning in higher education, providing evidence that the application of co-creation principles in higher education achieves learning outcomes, going beyond the employability of graduates. Co-creation pedagogy results in skill formation, enabling learners to feel empowered to work, achieve their ambitions for the future and lead fulfilling and meaningful lives. Thus, the research contributes to the existing literature, theory and practice of both entrepreneurial learning and co-creation.
بررسی تطبیقی نی نامه مولانا و قصیده دل از شاعر کرد صافی هیرانی بر اساس رویکرد تأثیرپذیری معکوس
Publisher: name: دانشگاه کردستان
Year: 2022

description: در پژوهش حاضر دو شعر از مولانا جلال الدین رومی و صافی هیرانی از منظر تطبیقی و بر اساس فرایند تأثیرپذیری معکوس و به شیوه توصیفی-حلیلی بررسی شده است. این پژوهش بر آن است به این پرسش پاسخ دهد که نوع تأثر صافی هیرانی از مولانا معارضه است یا مناقضه یا تقلید. قصیده "دل" از هیرانی بر اساس مکتب تطبیقی فرانسه به سبک معارضه و نوعی تأثیر پذیری معکوس از نی نامه مولانا است. شاعر کُرد شعر خود را به مثابه ی یک دستور عشق صوفیانه –به شیوه نی نامه- به زبان فارسی و نه کُردی سروده و با مولانا به معارضه پرداخته است. وی علی رغم اینکه در تجربه ی شعری و عرفانی از مولانا و زبان فارسی تاثیر پذیرفته است، اما محتوا و رمز محوری شعر مولانا را تغییر داده است؛ از جمله این که در رمزواره ای متفاوت جایگاه نی را به دل تغییر داده و توجه به ندای دل را جایگزین گوش دادن به ناله نی نموده است. صافی هیرانی سعی دارد مخاطب را به این اقناع برساند که این قلب است که شایستگی دارد تا از لحاظ عرفانی به آن گوش داده و از آن پند و اندرز گرفته شود
Improved Condensation on Strucutured Polymers
Creators: name: R. Raab; D. Fotachov; S. Karazma; T. Melchior1; M. Vu1; E. Oesterschulze;  E. V. Harbou & H.-J. Bart
Publisher: name: Zenodo
Year: 2023

description: Condensation behavior on structured polymers to enhance the overall heat transfer and to increase the heat transfer coefficient.
Bethe-Heitler cascades as a plausible origin of hard spectra in distant TeV blazars
Creators: name: Zheng, Y. G.
name: Yang, C. Y.
name: Kang, S. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Context. Very high-energy (VHE) $γ$-ray measurements of distant TeV blazars can be nicely explained by TeV spectra induced by ultra high-energy cosmic rays. Aims. We develop a model for a plausible origin of hard spectra in distant TeV blazars. Methods. In the model, the TeV emission in distant TeV blazars is dominated by two mixed components. The first is the internal component with the photon energy around 1 TeV produced by inverse Compton scattering of the relativistic electrons on the synchrotron photons (SSC) with a correction for extragalactic background light absorbtion and the other is the external component with the photon energy more than 1 TeV produced by the cascade emission from high-energy protons propagating through intergalactic space. Results. Assuming suitable model parameters, we apply the model to observed spectra of distant TeV blazars of 1ES 0229+200. Our results show that 1) the observed spectrum properties of 1ES 0229+200, especially the TeV $γ$-ray tail of the observed spectra, could be reproduced in our model and 2) an expected TeV $γ$-ray spectrum with photon energy $>$1 TeV of 1ES 0229+200 should be comparable with the 50-hour sensitivity goal of the Cherenkov Telescope Array (CTA) and the differential sensitivity curve for the one-year observation with the Large High Altitude Air Shower Observatory (LHAASO). Conclusions. We argue that strong evidence for the Bethe-Heitler cascades along the line of sight as a plausible origin of hard spectra in distant TeV blazars could be obtained from VHE observations with CTA, LHAASO, HAWC, and HiSCORE.
description: 17 pages, 5 figures, published in A&A (2016A&A...585A...8Z)
Reflected Entropy for Communicating Black Holes I: Karch-Randall Braneworlds
Creators: name: Afrasiar, Mir
name: Basak, Jaydeep Kumar
name: Chandra, Ashish
name: Sengupta, Gautam
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain the reflected entropy for bipartite mixed state configurations of two adjacent and disjoint intervals at a finite temperature in $BCFT_2$s with two distinct boundaries through a replica technique in the large central charge limit. Subsequently these field theory results are reproduced from bulk computations involving the entanglement wedge cross section in the dual BTZ black hole geometry truncated by two Karch-Randall branes. Our result confirms the holographic duality between the reflected entropy and the bulk entanglement wedge cross section in the context of the $AdS_3/BCFT_2$ scenario. We further investigate the critical issue of the holographic Markov gap between the reflected entropy and the mutual information for these configurations from the bulk braneworld geometry and study its variation with subsystem sizes and time.
description: 68 pages, 42 figures, 2 appendices
Orbital evolution and search for eccentricity and apsidal motion in the eclipsing HMXB 4U 1700-37
Creators: name: Islam, Nazma
name: Paul, Biswajit
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In the absence of detectable pulsations in the eclipsing High Mass X-ray binary 4U 1700-37, the orbital period decay is necessarily determined from the eclipse timing measurements. We have used the earlier reported mid-eclipse time measurements of 4U 1700-37 together with the new measurements from long term light curves obtained with the all sky monitors RXTE-ASM, Swift-BAT and MAXI-GSC, as well as observations with RXTE-PCA, to measure the long term orbital evolution of the binary. The orbital period decay rate of the system is estimated to be ${\dot{P}}/P = -(4.7 \pm 1.9) \times 10^{-7}$ yr$^{-1}$, smaller compared to its previous estimates. We have also used the mid-eclipse times and the eclipse duration measurements obtained from 10 years long X-ray light-curve with Swift-BAT to separately put constraints on the eccentricity of the binary system and attempted to measure any apsidal motion. For an apsidal motion rate greater than 5 degrees per year, the eccentricity is found to be less than 0.008, which limits our ability to determine the apsidal motion rate from the current data. We discuss the discrepancy of the current limit of eccentricity with the earlier reported values from radial velocity measurements of the companion star.
description: Accepted for publication in MNRAS
Half-Metallic Superconducting Triplet Spin Valve
Creators: name: Halterman, Klaus
name: Alidoust, Mohammad
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We theoretically study a finite size $SF_1NF_2$ spin valve, where a normal metal ($N$) insert separates a thin standard ferromagnet ($F_1$) and a thick half-metallic ferromagnet ($F_2$). For sufficiently thin superconductor ($S$) widths close to the coherence length $ξ_0$, we find that changes to the relative magnetization orientations in the ferromagnets can result in substantial variations in the transition temperature $T_c$, consistent with experiment [Singh et al., Phys. Rev. X 5, 021019 (2015)]. Our results demonstrate that, in good agreement with the experiment, the variations are largest in the case where $F_2$ is in a half-metallic phase and thus supports only one spin direction. To pinpoint the origins of this strong spin-valve effect, both the equal-spin $f_1$ and opposite-spin $f_0$ triplet correlations are calculated using a self-consistent microscopic technique. We find that when the magnetization in $F_1$ is tilted slightly out-of-plane, the $f_1$ component can be the dominant triplet component in the superconductor. The coupling between the two ferromagnets is discussed in terms of the underlying spin currents present in the system. We go further and show that the zero energy peaks of the local density of states probed on the $S$ side of the valve can be another signature of the presence of superconducting triplet correlations. Our findings reveal that for sufficiently thin $S$ layers, the zero energy peak at the $S$ side can be larger than its counterpart in the $F_2$ side.
$f_0(500)$, $f_0(980)$ and $a_0(980)$ production in the $χ_{c1} \to ηπ^+π^-$ reaction
Creators: name: Liang, Wei-Hong
name: Xie, Ju-Jun
name: Oset, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the $χ_{c1} \to ηπ^+ π^-$ decay, paying attention to the production of $f_0(500)$, $f_0(980)$ and $a_0(980)$ from the final state interaction of pairs of mesons that can lead to these three mesons in the final state, which is implemented using the chiral unitary approach. Very clean and strong signals are obtained for the $a_0(980)$ excitation in the $ηπ$ invariant mass distribution and for the $f_0(500)$ in the $π^+ π^-$ mass distribution. A smaller, but also clear signal for the $f_0(980)$ excitation is obtained. The results are contrasted with experimental data and the agreement found is good, providing yet one more test in support of the picture where these resonances are dynamically generated from the meson-meson interaction.
description: 7 pages, 7 figures
$τ$ lepton decays with production of strange scalar mesons $K^*_0(700)$ and $K^*_0(1430)$ in the extended NJL model
Creators: name: Volkov, Mikhail K.
name: Nurlan, K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The branching fractions of $τ$ lepton decays with the production of strange scalar mesons both in the ground and first radially excited states $τ\to ν_τ[K^*_0(700), K^*_0(1430)]$ and $τ\to ν_τ[K^*_0(700)π, K^*_0(1430)π, K^*_0(700) K, K^*_0 (700)η]$ are calculated in the extended $U(3) \times U(3)$ chiral quark NJL model. All mesons are considered as $q\bar{q}$ systems. The obtained results should be considered as predictions for future experiments.
description: 9 pages, 5 figures
Finite-size corrections and scaling for the dimer model on the checkerboard lattice
Creators: name: Izmailian, Nickolay Sh.
name: Wu, Ming-Chya
name: Hu, Chin-Kun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Lattice models are useful for understanding behaviors of interacting complex many-body systems. The lattice dimer model has been proposed to study the adsorption of diatomic molecules on a substrate. Here we analyze the partition function of the dimer model on an $2 M \times 2 N$ checkerboard lattice wrapped on a torus and derive the exact asymptotic expansion of the logarithm of the partition function. We find that the internal energy at the critical point is equal to zero. We also derive the exact finite-size corrections for the free energy, the internal energy, and the specific heat. Using the exact partition function and finite-size corrections for the dimer model on finite checkerboard lattice we obtain finite-size scaling functions for the free energy, the internal energy, and the specific heat of the dimer model. We investigate the properties of the specific heat near the critical point and find that specific-heat pseudocritical point coincides with the critical point of the thermodynamic limit, which means that the specific-heat shift exponent $λ$ is equal to $\infty$. We have also considered the limit $N \to \infty$ for which we obtain the expansion of the free energy for the dimer model on the infinitely long cylinder. From a finite-size analysis we have found that two conformal field theories with the central charges $c = 1$ for the height function description and $c = -2$ for the construction using a mapping of spanning trees can be used to describe the dimer model on the checkerboard lattice.
description: Physical Review E (2016), in press