cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
United States-Pakistan relations, 1947-1954: the conditions and causes for a military alliance
Creators: name: Larson, Wade Jeffrey
Publisher: name: University of British Columbia
Year: 2009

description: This discussion argues that the United States-Pakistan alliance of 1954 emerged because American strategic concerns for the Middle East, arising in the aftermath of the Korean War and based upon a recognition of Britain's declining ability to defend the region, coincided with Pakistan's strategic needs as a newlyindependent nation. The United States believed that Pakistan-a moderate Islamic nation, situated on the eastern flank of the Middle East, and ideologically inclined toward the West-could assist Western efforts to protect the Middle East from Soviet influence, penetration, or attack. This discussion further argues that the United States only brought Pakistan into the Western strategic network when a series of events made it seem that Asia would be the next battleground for the Cold War and after it was clear that if containment were to be extended to South Asia, Pakistan was the only choice available. Pakistan's persistent and sophisticated courtship of the United States differed greatly from India's efforts to remain neutral in the Cold War. And this discussion argues that the alliance was consistent with the broader policies of both the Truman and Eisenhower administrations and that it stemmed not from American interests in South Asia but from Washington's global strategic efforts to contain the Soviet Union. Consequently, the United States-Pakistan alliance was not the result of American attempts to "contain" or dominate India, of Anglo-American competition over the subcontinent and the Middle East, or of American efforts to establish economic hegemony over South Asia. Indeed, as the United States' fears for Middle Eastern security subsided, so did its commitment to the alliance with Pakistan.
น้ำมันมะพร้าวบริสุทธิ์
Creators: name: เฉลิมยศ อุทยารัตน์
Publisher: name: มหาวิทยาลัยราชภัฏยะลา
Year: 2554
Subjects: น้ำมันมะพร้าวบริสุทธิ์, การหมัก, การดูแลสุขภาพและความงามโดยวิธีธรรมชาติ

description: 1, 6, วารสารมหาวิทยาลัยราชภัฏยะลา
A possible blazar spectral irregularity case caused by photon--axionlike-particle oscillations
Creators: name: Zhou, Jianeng
name: Wang, Zhongxiang
name: Huang, Feng
name: Chen, Liang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report detection of a line-like feature in the $γ$-ray spectrum of the blazar B0516$-$621, for which the data obtained with the Large Area Telescope onboard {\it Fermi Gamma-Ray Space Telescope (Fermi)} are analyzed. The feature is at $\sim$7\,GeV and different analyses are conducted to check its real presence. We determine that it has a significance of 2.5--3.0$σ$, and cautiously note the presence of possible systematics in the data which could reduce the significance. This putative feature is too narrow to be explained with radiation processes generally considered for jet emission of blazars. Instead, it could be a signal due to the oscillations between photons and axion-like particles (ALPs) in the source's jet. We investigate this possibility by fitting the spectrum with the photon-ALP oscillation model, and find that the parameter space of ALP mass $m_a\leq 10^{-8}$\,eV and the coupling constant (between photons and ALPs) $g_{aγ}$=1.16--1.48$\times 10^{-10}$\,GeV$^{-1}$ can provide a fit to the line-like feature, while the magnetic field at the emission site of $γ$-rays is fixed at 0.7\,G. The ranges for $m_a$ and $g_{aγ}$ are in tension with those previously obtained from several experiments or methods, but on the other hand in line with some of the others. This spectral-feature case and its possible indication for ALP existence could be checked from similar studies of other blazar systems and also suggest a direction of effort for building future high-energy facilities that would have high sensitivities and spectral resolutions for searching for similar features.
description: 13 pages, 8 figures, to appear in JCAP
ปฏิกิริยาการเร่งด้วยแสงโดยไทเทเนียมไดออกไซด์
Creators: name: ชลดา ธีรการุณวงศ์
Publisher: name: มหาวิทยาลัยราชภัฏยะลา
Year: 2554
Subjects: ไทเทเนียมไดออกไซด์, ตัวเร่งปฏิกิริยาด้วยแสง, สารมลพิษอินทรีย์

description: 1, 6, วารสารมหาวิทยาลัยราชภัฏยะลา
Nodal Structure of Unconventional Superconductors Probed by the Angle Resolved Thermal Transport Measurements
Creators: name: Matsuda, Y.
name: Izawa, K.
name: Vekhter, I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Over the past two decades, unconventional superconductivity with gap symmetry other than s-wave has been found in several classes of materials, including heavy fermion (HF), high-T_c, and organic superconductors. Unconventional superconductivity is characterized by anisotropic superconducting gap functions, which may have zeros (nodes) along certain directions in the Brillouin zone. The nodal structure is closely related to the pairing interaction, and it is widely believed that the presence of nodes is a signature of magnetic or some other exotic, rather than conventional phonon-mediated, pairing mechanism. Therefore experimental determination of the gap function is of fundamental importance. However, the detailed gap structure, especially the direction of the nodes, is an unresolved issue in most unconventional superconductors. Recently it has been demonstrated that the thermal conductivity and specific heat measurements under magnetic field rotated relative to the crystal axes are a powerful method for determining the shape of the gap and the nodal directions in the bulk. Here we review the theoretical underpinnings of the method and the results for the nodal structure of several unconventional superconductors, including borocarbide YNi$_2$B$_2$C, heavy fermions UPd$_2$Al$_3$, CeCoIn$_5$, and PrOs$_4$Sb$_{12}$, organic superconductor, $κ$-(BEDT-TTF)$_2$Cu(NCS)$_2$, and ruthenate Sr$_2$RuO$_4$, determined by angular variation of the thermal conductivity and heat capacity.
description: topical review, 55 pages, 35 figures. Figure quality has been reduced for submission to cond-mat, higher quality figures available from the authors or from the publisher
Pion-nucleon scattering within a gauged linear sigma model with parity-doubled nucleons
Creators: name: Wilms, Susanna
name: Giacosa, Francesco
name: Rischke, Dirk H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compute pion-nucleon scattering at tree-level within a gauged linear sigma model which contains the nucleon and its chiral partner. Such an investigation in principle allows to make definite predictions as to whether the main contribution to the nucleon mass comes from the chiral condensate or from the mixing with its chiral partner. We find that there seems to be no set of model parameters that allows for a simultaneous description of all experimentally measured scattering lengths and range parameters. This indicates the need to improve the dynamical ingredients of the model.
description: 6 Pages, 1 Figure. To appear in the Proceedings of QM2006 (19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions, Shanghai, China, November 14-20) in Int. J. Mod. Phys. E
The $\bar{B}\to π$ form factors from QCD and their impact on $|V_{ub}|$
Creators: name: Leljak, Domagoj
name: Melić, Blaženka
name: van Dyk, Danny
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisit light-cone sum rules with pion distribution amplitudes to determine the full set of local $B \to π$ form factors. To this end, we determine all duality threshold parameters from a Bayesian fit for the first time. Our results, obtained at small momentum transfer $q^2$, are extrapolated to large $q^2$ where they agree with precise lattice QCD results. We find that a modification to the commonly used BCL parametrization is crucial to interpolate the scalar form factor between the two $q^2$ regions. We provide numerical results for the form factor parameters -- including their covariance -- based on simultaneous fit of all three form factors to both the sum rule and lattice QCD results. Our predictions for the form factors agree well with measurements of the $q^2$ spectrum of the semileptonic decay $\bar{B}^0\to π^+\ell^-\barν$. From the world average of the latter we obtain $|V_{ub}| = (3.77 \pm 0.15)\cdot 10^{-3}$, which is in agreement with the most recent inclusive determination at the $1\,σ$ level.
description: 33 pages, 8+1 figures, 9+1 tables; In the resubmitted version - an integrated LCSR form factor prediction is presented, several clarifications are made concerning pole masses, and typos corrected
Apparent quantum paradoxes as simple interference: Quantum violation of the pigeonhole principle and exchange of properties between quantum particles
Creators: name: Corrêa, Raul
name: Saldanha, Pablo L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It was recently argued that the pigeonhole principle, which states that if three pigeons are put into two pigeonholes then at least one pigeonhole must contain more than one pigeon, is violated in quantum systems [Y. Aharonov et al., PNAS 113, 532 (2016)]. An experimental verification of this effect was recently reported [M.-C. Chen et al., PNAS 116, 1549 (2019)]. In another recent experimental work, it was argued that two entities were observed to exchange properties without meeting each other [Z.-H. Liu et al., Nat. Commun. 11, 3006 (2020)]. Here we describe all these proposals and experiments as simple quantum interference effects, where no such dramatic conclusions appear. Besides demystifying some of the conclusions of the cited works, we also present physical insights for some interesting behaviors present in these treatments. For instance, we associate the anomalous particles behaviors in the quantum pigeonhole effect to a quantum interference of force.
description: 6 pages, 3 figures
The shadows and observational appearance of a noncommutative black hole surrounded by various profiles of accretions
Creators: name: Zeng, Xiao-Xiong
name: Li, Guo-Ping
name: He, Ke-Jian
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The accretion around the black hole plays a pivotal role in the theoretical analysis of black hole shadow, and of the black hole observation in particular. In this paper, we mainly study the shadow and observation characteristics of noncommutative Schwarzschild black holes wrapped by three accretion models, and then explore the influence of noncommutative parameters on the observation appearance and spacetime geometry of black holes. When the black hole is surrounded by an optically and geometrically thin accretion disk, it shows that the direct emissions always dominate the total observed intensity, while the lensing ring superimposed upon the direct emission produces a thin ring, which improves the observation intensity of the black hole image. However, the photon rings makes a negligible contributions to the total observed brightness due to its exponential narrowness, although the photon ring intersects the thin plane more than three times to pick up larger intensity. More importantly, when the noncommutative parameters changed, the corresponding regions and observation intensities of photon ring, lensing ring and direct emission all change correspondingly. For optical thin spherically symmetric accretion, we consider the static and infalling matters, respectively. We find that the observation intensity of the two spherical accretion models increase with the increase of noncommutative parameters. In addition, due to the Doppler effect of the infalling movement, the shadow image of infalling accretion is darker than that of static accretion. In a word, the different accretion models and noncommutative parameters will lead to different shadow images and optical appearances of noncommutative Schwarzschild black holes.
description: 25 pages, 12 figures
Formation of Ionization-Cone Structures in Active Galactic Nuclei: I. Stationary Model and Linear Stability Analysis
Creators: name: Afanasiev, V. L.
name: Dodonov, S. N.
name: Khrapov, S. S.
name: Moiseev, A. V.
name: Mustsevoy, V. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss causes of the formation of the observed kinematics and morphology of cones of ionized matter in the neighborhood of the nuclei of Seyfert galaxies. The results of linear stability analysis of an optically thin conic jet where radiation cooling and gravity play an important part are reported. The allowance for radiation cooling is shown to result in strong damping of all acoustic modes and to have insignificant effect on unstable surface Kelvin--Helmholtz modes. In the case of waveguide--resonance internal gravity modes radiative cooling suppresses completely the instability of waves propagating away from the ejection source and, vice versa, reduces substantially the growth time scale of unstable sourceward propagating modes. The results obtained can be used to study ionization cones in Seyfert galaxies with radio jets. In particular, our analysis shows that surface Kelvin--Helmholtz modes and volume harmonics are capable of producing regular features observed in optical emission-line images of such galaxies.
description: 13 pages, published in Astrophysical Bulletin
Searching for possible evidences of new physics in $B\to V_1 V_2$
Creators: name: Geng, C. Q.
name: Liu, Chia-Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We explore the decays of $B\to V_1V_2$ ($V_{1,2}= (ρ, ω,K^*, ϕ)$ and $B= (B^0, B^+,B_s)$) with transverse polarizations. We explicitly evaluate the eigenstates of T-odd scalar operators involving spins for the first time, which offer physical insight among the T violating observables. Based on the helicity suppression of tree operators for transverse polarizations in the standard model (SM), we deduce that $Δϕ_p= Δϕ_\parallel - Δϕ_\perp=0$ with $Δϕ_{\perp,\parallel}$ the weak phases of the transverse amplitudes. In contrast, the experiments show that $Δϕ_p (B^0 \to K^{*0} ω)= -0.84\pm 0.54$, which could be a signal of new physics. There is also a discrepancy between our result in the SM and the experimental data for the transverse polarized branching ratio in $B^0 \to K^{*0} ω$. In addition, by counting the helicity flips, we argue that $\sin(ϕ_\parallel - ϕ_\perp ) \approx 0$, which meets well with most of the experiments except for the ones with $B^0\to K^{*0}ω$, where $ϕ_{\parallel,\perp}$ are the strong phases in the transverse amplitudes.
description: 20 pages, 1 figure, revised version accepted by PLB
Reinforcement Learning with Prototypical Representations
Creators: name: Yarats, Denis
name: Fergus, Rob
name: Lazaric, Alessandro
name: Pinto, Lerrel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Learning effective representations in image-based environments is crucial for sample efficient Reinforcement Learning (RL). Unfortunately, in RL, representation learning is confounded with the exploratory experience of the agent -- learning a useful representation requires diverse data, while effective exploration is only possible with coherent representations. Furthermore, we would like to learn representations that not only generalize across tasks but also accelerate downstream exploration for efficient task-specific training. To address these challenges we propose Proto-RL, a self-supervised framework that ties representation learning with exploration through prototypical representations. These prototypes simultaneously serve as a summarization of the exploratory experience of an agent as well as a basis for representing observations. We pre-train these task-agnostic representations and prototypes on environments without downstream task information. This enables state-of-the-art downstream policy learning on a set of difficult continuous control tasks.
The characteristic function of optical evolution
Creators: name: Chen, Xiao-yu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The master equation of quantum optical density operator is transformed to the equation of characteristic function. The parametric amplification and amplitude damping as well as the phase damping are considered. The solution for the most general initial quantum state is obtained for parametric amplification and amplitude damping. The purity of one mode Gaussian system and the entanglement of two mode Gaussian system are studied.
description: 10 pages, 3 figures
A Cooperative-Competitive Multi-Agent Framework for Auto-bidding in Online Advertising
Creators: name: Wen, Chao
name: Xu, Miao
name: Zhang, Zhilin
name: Zheng, Zhenzhe
name: Wang, Yuhui
name: Liu, Xiangyu
name: Rong, Yu
name: Xie, Dong
name: Tan, Xiaoyang
name: Yu, Chuan
name: Xu, Jian
name: Wu, Fan
name: Chen, Guihai
name: Zhu, Xiaoqiang
name: Zheng, Bo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Multiagent Systems (cs.MA)
subject: Artificial Intelligence (cs.AI)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: In online advertising, auto-bidding has become an essential tool for advertisers to optimize their preferred ad performance metrics by simply expressing high-level campaign objectives and constraints. Previous works designed auto-bidding tools from the view of single-agent, without modeling the mutual influence between agents. In this paper, we instead consider this problem from a distributed multi-agent perspective, and propose a general $\underline{M}$ulti-$\underline{A}$gent reinforcement learning framework for $\underline{A}$uto-$\underline{B}$idding, namely MAAB, to learn the auto-bidding strategies. First, we investigate the competition and cooperation relation among auto-bidding agents, and propose a temperature-regularized credit assignment to establish a mixed cooperative-competitive paradigm. By carefully making a competition and cooperation trade-off among agents, we can reach an equilibrium state that guarantees not only individual advertiser's utility but also the system performance (i.e., social welfare). Second, to avoid the potential collusion behaviors of bidding low prices underlying the cooperation, we further propose bar agents to set a personalized bidding bar for each agent, and then alleviate the revenue degradation due to the cooperation. Third, to deploy MAAB in the large-scale advertising system with millions of advertisers, we propose a mean-field approach. By grouping advertisers with the same objective as a mean auto-bidding agent, the interactions among the large-scale advertisers are greatly simplified, making it practical to train MAAB efficiently. Extensive experiments on the offline industrial dataset and Alibaba advertising platform demonstrate that our approach outperforms several baseline methods in terms of social welfare and revenue.
description: Accepted by WSDM 2022
Finite-size scaling of the entanglement entropy of the quantum Ising chain with homogeneous, periodically modulated and random couplings
Creators: name: Igloi, Ferenc
name: Lin, Yu-Cheng
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using free-fermionic techniques we study the entanglement entropy of a block of contiguous spins in a large finite quantum Ising chain in a transverse field, with couplings of different types: homogeneous, periodically modulated and random. We carry out a systematic study of finite-size effects at the quantum critical point, and evaluate subleading corrections both for open and for periodic boundary conditions. For a block corresponding to a half of a finite chain, the position of the maximum of the entropy as a function of the control parameter (e.g. the transverse field) can define the effective critical point in the finite sample. On the basis of homogeneous chains, we demonstrate that the scaling behavior of the entropy near the quantum phase transition is in agreement with the universality hypothesis, and calculate the shift of the effective critical point, which has different scaling behaviors for open and for periodic boundary conditions.
description: 17 pages, 5 figures, v2: references added+updated
INTEGRAL and XMM-Newton observations of LSI +61 303
Creators: name: Chernyakova, M.
name: Neronov, A.
name: Walter, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: LSI +61 303 is one of the few X-ray binaries with Be star companion from which both radio and high-energy gamma-ray emission have been observed. We present XMM-Newton and INTEGRAL observations which reveal variability of the X-ray spectral index of the system. The X-ray spectrum is hard (photon index ~ 1.5) during the orbital phases of both high and low X-ray flux. However, the spectrum softens at the moment of transition from high to low X-ray state. The spectrum of the system in the hard X-ray band does not reveal the presence of a cut-off (or, at least a spectral break) at 10-60 keV energies, expected if the compact object is an accreting neutron star. The observed spectrum and spectral variability can be explained if the compact object in the system is a rotation powered pulsar.
description: 8 pages, accepted to MNRAS
Classical invariants for global actions and groupoid atlases
Creators: name: del Hoyo, Matias Luis
name: Minian, Elias Gabriel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 19D99, 20L05, 18G55, 55U35

description: A global action is the algebraic analogue of a topological manifold. This construction was introduced in first place by A. Bak as a combinatorial approach to K-Theory and the concept was later generalized by Bak, Brown, Minian and Porter to the notion of groupoid atlas. In this paper we define and investigate homotopy invariants of global actions and groupoid atlases, such as the strong fundamental groupoid, the weak and strong nerves, classifying spaces and homology groups. We relate all these new invariants to classical constructions in topological spaces, simplicial complexes and simplicial sets. This way we obtain new combinatorial formulations of classical and non classical results in terms of groupoid atlases.
description: 34 pages
Simple, Shareable, Online RNA secondary structure diagrams
Creators: name: Kerpedjiev, Peter
Publisher: name: F1000Research
Year: 2015

description: These slides present three javascript libraries for displaying RNA secondary structure. The first, forna is an interactive application that allows for the simple visualization of RNA secondary structure given a dot-bracket string. The second, fornac, is an embedable container for displaying RNA secondary structures within web pages. The third, rna-plot, is a layout for the d3.js library allowing for the construction of richer, complex interactive visualizations.
Attaining quantum limited precision of localizing an object in passive imaging
Creators: name: Sajjad, Aqil
name: Grace, Michael R
name: Zhuang, Quntao
name: Guha, Saikat
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate our ability to determine the mean position, or centroid, of a linear array of equally-bright incoherent point sources of light, whose continuum limit is the problem of estimating the center of a uniformly-radiating object. We consider two receivers: an image-plane ideal direct-detection imager and a receiver that employs Hermite-Gaussian (HG) Spatial-mode Demultiplexing (SPADE) in the image plane, prior to shot-noise-limited photon detection. We compare the Fisher Information (FI) for estimating the centroid achieved by these two receivers, which quantifies the information-accrual rate per photon, and compare those with the Quantum Fisher Information (QFI): the maximum attainable FI by any choice of measurement on the collected light allowed by physics. We find that focal-plane direct imaging is strictly sub-optimal, although not by a large margin. We also find that the HG mode sorter, which is the optimal measurement for estimating the separation between point sources (or the length of a line object) is not only suboptimal, but it performs worse than direct imaging. We study the scaling behavior of the QFI and direct imaging's FI for a continuous, uniformly-bright object in terms of its length, and find that both are inversely proportional to the object's length when it is sufficiently larger than the Rayleigh length. Finally, we propose a two-stage adaptive modal receiver design that attains the QFI for centroid estimation.
description: 20 pages, 4 figures; slightly reformatted version to appear in PRA
Accelerated quantum Monte Carlo with mitigated error on noisy quantum computer
Creators: name: Yang, Yongdan
name: Lu, Bing-Nan
name: Li, Ying
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Quantum Monte Carlo and quantum simulation are both important tools for understanding quantum many-body systems. As a classical algorithm, quantum Monte Carlo suffers from the sign problem, preventing its application to most fermion systems and real time dynamics. In this paper, we introduce a novel non-variational algorithm using quantum simulation as a subroutine to accelerate quantum Monte Carlo by easing the sign problem. The quantum subroutine can be implemented with shallow circuits and, by incorporating error mitigation, can reduce the Monte Carlo variance by several orders of magnitude even when the circuit noise is significant. As such, the proposed quantum algorithm is applicable to near-term noisy quantum hardware.
description: 22 pages, 7 figures
How to hide large scale outflows: size constraints on the jets of Sgr A*
Creators: name: Markoff, Sera
name: Bower, Geoffrey C.
name: Falcke, Heino
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Despite significant strides made towards understanding accretion, outflow, and emission processes in the Galactic Center supermassive black hole Sagittarius A*, the presence of jets has neither been rejected nor proven. We investigate here whether the combined spectral and morphological properties of the source at radio through near infrared wavelengths are consistent with the predictions for inhomogeneous jets. In particular, we construct images of jets at a wavelength of 7mm based on models that are consistent with the spectrum of Sgr A*. We then compare these models through closure quantities with data obtained from the Very Long Baseline Array at 7mm. We find that the best-fit jet models give comparable or better fits than best-fit Gaussian models for the intrinsic source found in previous analyses. The best fitting jet models are bipolar, are highly inclined to the line of sight ($θ\ge$ 75 degrees), may favor a position angle on the sky of 105 degrees, and have compact bases with sizes of a few gravitational radii.
description: 12 pages, 14 figures, submitted to MNRAS
Aspects of Multiple Membranes
Creators: name: Berman, David S.
name: Tadrowski, Laura C.
name: Thompson, Daniel C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper examines various aspects of the recently proposed theory of coincident membranes by Bagger and Lambert. These include the properties of open membranes and the resulting boundary theory with an interpretation in terms of the fivebrane and marginal supersymmetric deformations of the interactions with the relation to the holographic dual.
description: latex, 24 pages
Study of $C$ parity violating and strangeness changing $J/ψ$ ${\to}$ $PP$ weak decays
Creators: name: Yang, Yueling
name: Lu, Junliang
name: Duan, Mingfei
name: Huang, Jinshu
name: Sun, Junfeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The $J/ψ$ weak decays are rare but possible within the standard model of elementary particles. Inspired by the potential prospects at the future intensity frontier, the $C$ parity violating $J/ψ$ ${\to}$ $πη^{({\prime})}$, $ηη^{\prime}$ decays and the strangeness changing $J/ψ$ ${\to}$ $πK$, $Kη^{({\prime})}$ decays are studied with the perturbative QCD approach. It is found that the $J/ψ$ ${\to}$ $ηη^{\prime}$ decays have relatively large branching ratios, about the order of $10^{-11}$, which might be within the measurement capability and sensitivity of the future STCF experiment.
description: 17 pages
Scientific Methodology for Optimizing HVAC Systems
Creators: name: Assanali Kazhybekov
Publisher: name: Zenodo
Year: 2024

description: This paper presents a comprehensive methodology for optimizing Heating, Ventilation, and Air Conditioning (HVAC) systems by integrating advanced technologies such as Computational Fluid Dynamics (CFD), heat recovery units, and modern air filtration systems like HEPA filters and Ultraviolet Germicidal Irradiation (UVGI). The study aims to reduce energy consumption by 20-30%, improve indoor air quality, and enhance overall operational efficiency. A detailed energy audit is conducted, followed by airflow modeling using CFD to ensure uniform temperature distribution. Additionally, filtration systems are tested to reduce particulate matter (PM2.5) and volatile organic compounds (VOCs), leading to healthier indoor environments. The economic analysis demonstrates that the proposed upgrades offer significant energy savings with a payback period of 3-5 years, making them financially viable for large-scale building applications.
Designing a Multi-petabyte Database for LSST
Creators: name: Becla, Jacek
name: Hanushevsky, Andrew
name: Nikolaev, Sergei
name: Abdulla, Ghaleb
name: Szalay, Alex
name: Nieto-Santisteban, Maria
name: Thakar, Ani
name: Gray, Jim
Publisher: name: arXiv
Year: 2006
Subjects: subject: Databases (cs.DB)
subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: The 3.2 giga-pixel LSST camera will produce approximately half a petabyte of archive images every month. These data need to be reduced in under a minute to produce real-time transient alerts, and then added to the cumulative catalog for further analysis. The catalog is expected to grow about three hundred terabytes per year. The data volume, the real-time transient alerting requirements of the LSST, and its spatio-temporal aspects require innovative techniques to build an efficient data access system at reasonable cost. As currently envisioned, the system will rely on a database for catalogs and metadata. Several database systems are being evaluated to understand how they perform at these data rates, data volumes, and access patterns. This paper describes the LSST requirements, the challenges they impose, the data access philosophy, results to date from evaluating available database technologies against LSST requirements, and the proposed database architecture to meet the data challenges.
description: 8 pages. to appear in SPIE
Reliability of Neural Networks Based on Spintronic Neurons
Creators: name: Raimondo, Eleonora
name: Giordano, Anna
name: Grimaldi, Andrea
name: Puliafito, Vito
name: Carpentieri, Mario
name: Zeng, Zhongming
name: Tomasello, Riccardo
name: Finocchio, Giovanni
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spintronic technology is emerging as a direction for the hardware implementation of neurons and synapses of neuromorphic architectures. In particular, a single spintronic device can be used to implement the nonlinear activation function of neurons. Here, we propose how to implement spintronic neurons with a sigmoidal and ReLU-like activation functions. We then perform a numerical experiment showing the robustness of neural networks made by spintronic neurons all having different activation functions to emulate device-to-device variations in a possible hardware implementation of the network. Therefore, we consider a vanilla neural network implemented to recognize the categories of the Mixed National Institute of Standards and Technology database, and we show an average accuracy of 98.87 % in the test dataset which is very close to the 98.89% as obtained for the ideal case (all neurons have the same sigmoid activation function). Similar results are also obtained with neurons having a ReLU-like activation function.
Naturstoffe aus endophytischen Pilzen
Creators: name: Maschke, Sebastian
Publisher: name: Universität Bielefeld
Year: 2019
Subjects: subject: 540

description: Surface sterilisation of plant material from various host species and tissue types, collected from different habitats, with subsequent cultivation of the arising fungal mycelia as axenic cultures resulted in the isolation of 55 fungal endophytes. The strains were identified via nrITS-DNA (ITS-barcoding). A broad taxonomical distribution within these strains was ob- served with a focus on ascomycotous fungi and an emphasis on members of the Sordari- omycetes und Dothideomycetes classes. Some of the cultivated fungal strains showed low sequence identity to the reference species in the databases. Therefore they were recognized as potential new or underexplored species.
 Antibacterial and cytotoxic activities were observed in crude extracts of ethyl acetate after cultivation through solid-state-fermentation on rice. Due to phylogenetic considerations and bioactive properties five strains, were chosen for a detailed mycochemical investigation, _Pur- pureocillium lilacinum_ (T26B), _Xylaria cubensis_ (TS7), _Daldinia_ sp. (SG1), Didymosphaeriaceae sp. (SG8c, cf. _Tremateia_ sp.), _Biscogniauxia_ sp. (SG25).
 These mycochemical investigation of endophytic fungal crude extracts resulted in the isola- tion, identification and characterisation of nine new, previously undescribed and 55 already literature known compounds. The new described molecules were comprised of three dep- sidones (Tremateiasidon A - C), one depside (Tremateiasid A), one pyranocoumarin (Trema- teiajulin A) with an unusual molecular scaffold, one monosulfated diketopiperazine ( 3_S_-Norgliovictin), one quinone (Tremaquin A) und one isochromane (Tremachroman), as well as a butenolide (Lilacinolid A). Some of the new molecules show strong antibacterial activity, comparable or exceeding the potency of the reference drug (Gentamicin). The previ- ously published metabolites, some of which were ascertained in their respective fungal spe- cies or genera for the first time, represent different compound classes (depsidones, isocou- marines, cytochalasines, linear, non-ribosomal peptides, cyclic depsipeptides, butenolides, lipids, etc.), which underlined the biosynthetic potential of endophytic fungi. In addition, vari- ous fractions and pure isolated compounds showed bioactive properties. These mycochemi- cal investigations were able to prove that endophytic fungi are a good source for new and bioactive natural products.
Factors Affecting Inconsistency in Hospital Visits of Psoriasis Out-Patients
Creators: name: Wikunda  Limpiangkanan
name: Wichuda  Limpiangkanan
Publisher: name: Yala Rajabhat University
Year: 2011
Subjects: Psoriasis, Clinical features, Hospital visit, Out-patient

description: 2, 6, Journal of Yala Rajabhat University
Self-Tuning for Data-Efficient Deep Learning
Creators: name: Wang, Ximei
name: Gao, Jinghan
name: Long, Mingsheng
name: Wang, Jianmin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Deep learning has made revolutionary advances to diverse applications in the presence of large-scale labeled datasets. However, it is prohibitively time-costly and labor-expensive to collect sufficient labeled data in most realistic scenarios. To mitigate the requirement for labeled data, semi-supervised learning (SSL) focuses on simultaneously exploring both labeled and unlabeled data, while transfer learning (TL) popularizes a favorable practice of fine-tuning a pre-trained model to the target data. A dilemma is thus encountered: Without a decent pre-trained model to provide an implicit regularization, SSL through self-training from scratch will be easily misled by inaccurate pseudo-labels, especially in large-sized label space; Without exploring the intrinsic structure of unlabeled data, TL through fine-tuning from limited labeled data is at risk of under-transfer caused by model shift. To escape from this dilemma, we present Self-Tuning to enable data-efficient deep learning by unifying the exploration of labeled and unlabeled data and the transfer of a pre-trained model, as well as a Pseudo Group Contrast (PGC) mechanism to mitigate the reliance on pseudo-labels and boost the tolerance to false labels. Self-Tuning outperforms its SSL and TL counterparts on five tasks by sharp margins, e.g. it doubles the accuracy of fine-tuning on Cars with 15% labels.
description: 11 pages, 7 figures
How should the high-risk children go back to school following school reopening in the COVID-19 pandemic?
Creators: name: Askarian, Mehrdad
name: Taghrir, Mohammad Hossein
name: Akbarialiabad, Hossein
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2021
Subjects: COVID-19
school health
high-risk pediatrics
chronic disease
infectious disease
pandemic

description: EXCLI Journal; 20:Doc503; ISSN 1611-2156
A model for multivariate binary data with covariates based on compatible conditionally specified logistic regressions
Creators: name: Liu, Ying
Publisher: name: University of British Columbia
Year: 2009

description: Rather than construction of a multivariate distribution from given univariate or bivariate margins, recently several papers seek to promote the development and usage of a simple but relatively unknown approach to the specification of models for dependent binary outcomes through conditional probabilities, each of which is assumed to be logistic. These recent proposals were all offered as heuristic approaches to specifying a multivariate distribution capable of representing the dependence of binary outcomes. However, they are limited in scope, for they all describe some special patterns of dependence. This thesis is concerned with a model for a multivariate binary response with covariates based on compatible conditionally specified logistic regressions. With this model, we allow for a general dependence structure for the binary outcomes. Three likelihood-based computing methods are introduced to estimate the parameters in our model. An example on the coronary bypass surgery is presented for illustration.
Dynamic generation of entangling wave packets in XY spin system with decaying long range couplings
Creators: name: Yang, S.
name: Song, Z.
name: Sun, C. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the dynamic generation of spin entanglement between two distant sites in an XY model with $1/r^{2}$-decay long range couplings. Due to the linear dispersion relation $ε(k)\sim |k|$ of magnons in such model, we show that a well-located spin state can be dynamically split into two moving entangled local wave packets without changing their shapes. Interestingly, when such two wave packets meet at the diametrically opposite site after the fast period $τ=π$, the initial well-located state can be recurrent completely. Numerical calculation is performed to confirm the analytical result even the ring system of sizes $N$ up to several thousands are considered. The truncation approximation for the coupling strengths is also studied. Numerical simulation shows that the above conclusions still hold even the range of the coupling strength is truncated at a relative shorter scale comparing to the size of the spin system.
description: 7 pages, 6 figures
แรงจูงใจในการตรวจเต้านมด้วยตนเองของสตรี อำเภอเมือง จังหวัดชุมพร
Creators: name: เพ็ญพิศ  จีระภา
Publisher: name: มหาวิทยาลัยราชภัฏยะลา
Year: 2554
Subjects: แรงจูงใจ, การตรวจเต้านมด้วยตนเอง, จังหวัดชุมพร

description: 2, 6, วารสารมหาวิทยาลัยราชภัฏยะลา
Quantum walks on a programmable two-dimensional 62-qubit superconducting processor
Creators: name: Gong, Ming
name: Wang, Shiyu
name: Zha, Chen
name: Chen, Ming-Cheng
name: Huang, He-Liang
name: Wu, Yulin
name: Zhu, Qingling
name: Zhao, Youwei
name: Li, Shaowei
name: Guo, Shaojun
name: Qian, Haoran
name: Ye, Yangsen
name: Chen, Fusheng
name: Ying, Chong
name: Yu, Jiale
name: Fan, Daojin
name: Wu, Dachao
name: Su, Hong
name: Deng, Hui
name: Rong, Hao
name: Zhang, Kaili
name: Cao, Sirui
name: Lin, Jin
name: Xu, Yu
name: Sun, Lihua
name: Guo, Cheng
name: Li, Na
name: Liang, Futian
name: Bastidas, V. M.
name: Nemoto, Kae
name: Munro, W. J.
name: Huo, Yong-Heng
name: Lu, Chao-Yang
name: Peng, Cheng-Zhi
name: Zhu, Xiaobo
name: Pan, Jian-Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum walks are the quantum mechanical analogue of classical random walks and an extremely powerful tool in quantum simulations, quantum search algorithms, and even for universal quantum computing. In our work, we have designed and fabricated an 8x8 two-dimensional square superconducting qubit array composed of 62 functional qubits. We used this device to demonstrate high fidelity single and two particle quantum walks. Furthermore, with the high programmability of the quantum processor, we implemented a Mach-Zehnder interferometer where the quantum walker coherently traverses in two paths before interfering and exiting. By tuning the disorders on the evolution paths, we observed interference fringes with single and double walkers. Our work is an essential milestone in the field, brings future larger scale quantum applications closer to realization on these noisy intermediate-scale quantum processors.
description: 13 pages, 4 figures, and supplementary materials with 21 pages, 13 figures and 1 table
Scaling of Huygens-front speedup in weakly random media
Creators: name: Mayo, Jackson R.
name: Kerstein, Alan R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Front propagation described by Huygens' principle is a fundamental mechanism of spatial spreading of a property or an effect, occurring in optics, acoustics, ecology and combustion. If the local front speed varies randomly due to inhomogeneity or motion of the medium (as in turbulent premixed combustion), then the front wrinkles and its overall passage rate (turbulent burning velocity) increases. The calculation of this speedup is subtle because it involves the minimum-time propagation trajectory. Here we show mathematically that for a medium with weak isotropic random fluctuations, under mild conditions on its spatial structure, the speedup scales with the 4/3 power of the fluctuation amplitude. This result, which verifies a previous conjecture while clarifying its scope, is obtained by reducing the propagation problem to the inviscid Burgers equation with white-in-time forcing. Consequently, field-theoretic analyses of the Burgers equation have significant implications for fronts in random media, even beyond the weak-fluctuation limit.
description: 7 pages, 3 figures, elsart5p. v2: additional discussion of Hamiltonian formalism; v3: clarification of transient behavior
พลังงานน้ำผลิตไฟฟ้าขนาดจิ๋ว : การสำรวจข้อมูลเกี่ยวกับพื้นที่และออกแบบระบบ ณ มูลนิธิสุข-แก้ว แก้วแดง
Creators: name: อีลีหย๊ะ สนิโซ
name: เชิดตระกูล หอมจำปา
name: สุนิตย์ โรจณสุวรรณ
Publisher: name: มหาวิทยาลัยราชภัฏยะลา
Year: 2554
Subjects: พลังงานทดแทน, พลังงานน้ำ, กังหันน้ำ, มูลนิธิสุข-แก้ว แก้วแดง

description: 2, 6, วารสารมหาวิทยาลัยราชภัฏยะลา
sl(2)-Trivial Deformations of Vect_{Pol}(R)-Modules of Symbols
Creators: name: Ammar, Mabrouk Ben
name: Boujelbene, Maha
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We consider the action of Vect_{Pol}(R) by Lie derivative on the spaces of symbols of differential operators. We study the deformations of this action that become trivial once restricted to sl(2). Necessary and sufficient conditions for integrability of infinitesimal deformations are given.
description: This is a contribution to the Special Issue on Deformation Quantization, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Stellar Shocks From Dark Matter Asteroid Impacts
Creators: name: Das, Anirban
name: Ellis, Sebastian A. R.
name: Schuster, Philip C.
name: Zhou, Kevin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Macroscopic dark matter is almost unconstrained over a wide "asteroid-like" mass range, where it could scatter on baryonic matter with geometric cross section. We show that when such an object travels through a star, it produces shock waves which reach the stellar surface, leading to a distinctive transient optical, UV and X-ray emission. This signature can be searched for on a variety of stellar types and locations. In a dense globular cluster, such events occur far more often than flare backgrounds, and an existing UV telescope could probe orders of magnitude in dark matter mass in one week of dedicated observation.
description: 13 pages, 5 figures. v2: clarifications and references added, matches journal version
On leading order gravitational backreactions in de Sitter spacetime
Creators: name: Losic, B.
name: Unruh, W. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Backreactions are considered in a de Sitter spacetime whose cosmological constant is generated by the potential of scalar field. The leading order gravitational effect of nonlinear matter fluctuations is analyzed and it is found that the initial value problem for the perturbed Einstein equations possesses linearization instabilities. We show that these linearization instabilities can be avoided by assuming strict de Sitter invariance of the quantum states of the linearized fluctuations. We furthermore show that quantum anomalies do not block the invariance requirement. This invariance constraint applies to the entire spectrum of states, from the vacuum to the excited states (should they exist), and is in that sense much stronger than the usual Poincare invariance requirement of the Minkowski vacuum alone. Thus to leading order in their effect on the gravitational field, the quantum states of the matter and metric fluctuations must be de Sitter invariant.
description: 12 pages, no figures, typos corrected and some clarifying comments added, version accepted by Phys. Rev. D