cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Thermal Impact on Spiking Properties in Hodgkin-Huxley Neuron with Synaptic Stimulus
Creators: name: Kuang, Shenbing
name: Wang, Jiafu
name: Zeng, Ting
name: Cao, Aiyin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: The effect of environmental temperature on neuronal spiking behaviors is investigated by numerically simulating the temperature dependence of spiking threshold of the Hodgkin-Huxley neuron subject to synaptic stimulus. We find that the spiking threshold exhibits a global minimum in a "comfortable temperature" range where spike initiation needs weakest synaptic strength, indicating the occurrence of optimal use of synaptic transmission in neural system. We further explore the biophysical origin of this phenomenon in ion channel gating kinetics and also discuss its possible biological relevance in information processing in neural systems.
description: 10 pages, 4 figures
Criticism between scientificity and ideology : theoretical impasses in F.R. Leavis and P. Macherey
Creators: name: Ezroura, Mohammed
Publisher: name: University of British Columbia
Year: 2011

description: While focussing on the metaphor of scientificity in Leavis's and Macherey's writings, this dissertation addresses other questions central to criticism, cultural theory, and the philosophy of science. Whereas Leavis opposes scientificity, Macherey proposes "scientific criticism" as imperative to theoretical practice. Between the two critics, scientificity reveals its major metamorphoses. This study is divided into four major parts. Part One situates the concept of scientificity in the modern debate between critics and philosophers of science. I compare their problematization of scientificity to the way this notion has been represented in literary criticism. The debate blurs the boundary between scientific and literary knowledge, and brings the question of ideology in scientific discourse to the fore. Scientificity is thus bound with ideology as an epistemological practice. Part two focusses on Leavis's rejection of scientificity. In three chapters here I investigate the significance of Leavis's definition of "organic culture," "civilization," "science," and "criticism." These are all rooted in Arnold's cultural paradigm, which privileges a traditional order. Leavis's opposition to "theory," "science," and "philosophy" problematizes his principles of "precision," "analysis," and "standards." His controversies with CP. Snow's scientism and with Marxism reveal his concern with theory and scientific epistemology. His defence of "ambiguity," and "impossibility of definition" also makes his framework confront a theoretical impasse that is revealed by a desire to theorize criticism—Leavis's duty towards society— and a fear of theory and science, perceived as destructive. Part Three, comprising three chapter, considers Macherey's scientific criticism. His notions of the "structure of absence" and "symptomatic reading" are central to his theorization of criticism, science, and ideology. These are formulated through Freud's categories of dream analysis, Saussure's notion of difference, and Althusser's conception of ideology. For Macherey, scientific criticism negates ideology. But his emphasis on "absence" as constitutive of scientificity brings his epistemology to a theoretical impasse that resembles Leavis's. Macherey's anchoring of meaning in economic structures, in ideology, and in Marxism as "science," problematizes his scientific project because it abandons "absence." Part Four concludes the dissertation by investigating ways in which Leavis and Macherey illustrate the importance of an epistemological phenomenon in literary studies: criticism's struggle with scientificity. Whether opposed or defended, scientificity has helped criticism to emulate the hegemonic discourse of science and to combat rival critical strategies. However, to dispel "scientific" delusions, criticism must scrutinize its affiliation with ideology both in scientific method and in theory.
DCL-SLAM: A Distributed Collaborative LiDAR SLAM Framework for a Robotic Swarm
Creators: name: Zhong, Shipeng
name: Qi, Yuhua
name: Chen, Zhiqiang
name: Wu, Jin
name: Chen, Hongbo
name: Liu, Ming
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: To execute collaborative tasks in unknown environments, a robotic swarm needs to establish a global reference frame and locate itself in a shared understanding of the environment. However, it faces many challenges in real-world scenarios, such as the prior information about the environment being absent and poor communication among the team members. This work presents DCL-SLAM, a fully distributed collaborative LiDAR SLAM framework intended for the robotic swarm to simultaneously co-localize in an unknown environment with minimal information exchange. Based on ad-hoc wireless peer-to-peer communication (limited bandwidth and communication range), DCL-SLAM adopts the lightweight LiDAR-Iris descriptor for place recognition and does not require full connectivity among teams. DCL-SLAM includes three main parts: a replaceable single-robot front-end that produces LiDAR odometry results; a distributed loop closure module that detects inter-robot loop closures with keyframes; and a distributed back-end module that adapts distributed pose graph optimizer combined with a pairwise consistent measurement set maximization algorithm to reject spurious inter-robot loop closures. We integrate our proposed framework with diverse open-source LiDAR odometry methods to show its versatility. The proposed system is extensively evaluated on benchmarking datasets and field experiments over various scales and environments. Experimental result shows that DCL-SLAM achieves higher accuracy and lower communication bandwidth than other state-of-art multi-robot SLAM systems. The full source code is available at https://github.com/zhongshp/DCL-SLAM.git.
Universal resources for measurement-based quantum computation
Creators: name: Nest, Maarten Van den
name: Miyake, Akimasa
name: Dür, Wolfgang
name: Briegel, Hans J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate which entanglement resources allow universal measurement-based quantum computation via single-qubit operations. We find that any entanglement feature exhibited by the 2D cluster state must also be present in any other universal resource. We obtain a powerful criterion to assess universality of graph states, by introducing an entanglement measure which necessarily grows unboundedly with the system size for all universal resource states. Furthermore, we prove that graph states associated with 2D lattices such as the hexagonal and triangular lattice are universal, and obtain the first example of a universal non-graph state.
description: 4 pages, 1 figure; final version
Investigation Report on COVID-19 Transmission
Creators: name: Milk Tea Alliance
Publisher: name: Zenodo
Year: 2021

description: To this day, the coronavirus is still spreading on a large scale in the world and continuously mutating, making the prevention and control of the epidemic worse. The scientific traceability of the virus is of great significance to solving the problem of the transmission of the disease. At present, there are multiple evidences showing that the Coronavirus originated in the United States, or that the virus leaked due to laboratory accidents and caused an epidemic. Due to the negligence and deliberate concealment of the U.S. government, COVID-19 was mistakenly transmitted as an "e-cigarette disease" or flu in its early stages, the cold chain transportation and U.S. military activities in the United States were the main media for the invasion and spread of COVID-19 outside the United States. Facing the increasingly severe challenge of the Coronavirus epidemic, the US government has hidden the truth of the epidemic, led a politicized investigation of the origin of the Coronavirus, retagged and stigmatized the virus under the pretext of the epidemic, and used it as a political tools to attack other countries, especially to Chinese. This completely contrary to the spirit of science, interferes with global traceability cooperation, undermines global unity in fighting the epidemic, and creates and exacerbates estrangement and confrontation is bound to be cast aside by the people of the world.
Bounds on oblivious multiparty quantum communication complexity
Creators: name: Gall, François Le
name: Suruga, Daiki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The main conceptual contribution of this paper is investigating quantum multiparty communication complexity in the setting where communication is \emph{oblivious}. This requirement, which to our knowledge is satisfied by all quantum multiparty protocols in the literature, means that the communication pattern, and in particular the amount of communication exchanged between each pair of players at each round is fixed \emph{independently of the input} before the execution of the protocol. We show, for a wide class of functions, how to prove strong lower bounds on their oblivious quantum $k$-party communication complexity using lower bounds on their \emph{two-party} communication complexity. We apply this technique to prove tight lower bounds for all symmetric functions with \textsf{AND} gadget, and in particular obtain an optimal $Ω(k\sqrt{n})$ lower bound on the oblivious quantum $k$-party communication complexity of the $n$-bit Set-Disjointness function. We also show the tightness of these lower bounds by giving (nearly) matching upper bounds.
description: 13 pages, an accepted paper of LATIN 2022
Multi-wavelength VLTI study of the puffed-up inner rim of a circumbinary disc
Creators: name: Corporaal, A.
name: Kluska, J.
name: Van Winckel, H.
name: Bollen, D.
name: Kamath, D.
name: Min, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The presence of stable, compact circumbinary discs of gas and dust around post-asymptotic giant branch (post-AGB) binary systems has been well established. We focus on one such system: IRAS 08544-4431. We present an interferometric multi-wavelength analysis of the circumstellar environment of IRAS 08544-4431. The aim is to constrain different contributions to the total flux in the H, K, L, and N-bands in the radial direction. The data from VLTI/PIONIER, VLTI/GRAVITY, and VLTI/MATISSE range from the near-infrared, where the post-AGB star dominates, to the mid-infrared, where the disc dominates. We fitted two geometric models to the visibility data to reproduce the circumbinary disc: a ring with a Gaussian width and a flat disc model with a temperature gradient. The flux contributions from the disc, the primary star (modelled as a point-source), and an over-resolved component are recovered along with the radial size of the emission, the temperature of the disc as a function of radius, and the spectral dependencies of the different components. The trends of all visibility data were well reproduced with the geometric models. The near-infrared data were best fitted with a Gaussian ring model while the mid-infrared data favoured a temperature gradient model. This implies that a vertical structure is present at the disc inner rim, which we attribute to a rounded puffed-up inner rim. The N-to-K size ratio is 2.8, referring to a continuous flat source, analogues to young stellar objects. By combining optical interferometric instruments operating at different wavelengths we can resolve the complex structure of circumstellar discs and study the wavelength-dependent opacity profile. A detailed radial, vertical, and azimuthal structural analysis awaits a radiative transfer treatment in 3D to capture all non-radial complexity.
description: 8 pages, 5 figures, accepted for publication in A&A Letters
ปัจจัยที่มีผลต่อการเลือกสถาบันศึกษาของนิสิต นักศึกษา หลักสูตรการแพทย์แผนไทยประยุกต์บัณฑิตในสถาบันระดับอุดมศึกษา
Creators: name: พลอยชนก ปทุมานนท์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: ปัจจัย, การแพทย์แผนไทยประยุกต์, สถาบันระดับอุดมศึกษา

description: ฉบับพิเศษ, วารสารมนุษยศาสตร์และสังคมศาสตร์ มหาวิทยาลัยมหาสารคาม
Cross sections at NNLO
Creators: name: Del Duca, V.
name: Somogyi, G.
name: Trocsanyi, Z.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this talk we report on the state of the art on the calculation of cross section at next-to-next-to-leading (NNLO) accuracy.
description: 4 pages. To appear in the proceedings of DIS06, Tsukuba, Japan
Baryogenesis in a Parity Solution to the Strong CP Problem
Creators: name: Harigaya, Keisuke
name: Wang, Isaac R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Space-time parity can solve the strong CP problem and introduces a spontaneously broken $SU(2)_R$ gauge symmetry. We investigate the possibility of baryogenesis from a first-order $SU(2)_R$ phase transition similar to electroweak baryogenesis. We consider a model with the minimal Higgs content, for which the strong CP problem is indeed solved without introducing extra symmetry beyond parity. Although the parity symmetry seems to forbid the $SU(2)_R$ anomaly of the $B-L$ symmetry, the structure of the fermion masses can allow for the $SU(2)_R$ sphaleron process to produce non-zero $B-L$ asymmetry of Standard Model particles so that the wash out by the $SU(2)_L$ sphaleron process is avoided. The setup predicts a new hyper-charged fermion whose mass is correlated with the $SU(2)_R$ symmetry breaking scale and hence with the $SU(2)_R$ gauge boson mass, and depending on the origin of CP violation, with an electron electric dipole moment. In a setup where CP violation and the first-order phase transition are assisted by a singlet scalar field, the singlet can be searched for at future colliders.
description: 32 pages, 4 figures
การออกแบบและพัฒนาเรขศิลป์เพื่อส่งเสริมอัตลักษณ์เมือง กรณีศึกษา เทศบาลเมืองมหาสารคาม จังหวัดมหาสารคาม
Creators: name: ธัญญรัตน์ อัศวนนท์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: ออกแบบเรขศิลป์, เรขศิลป์, ออกแบบอัตลักษณ์, มหาสารคาม

description: ฉบับพิเศษ, วารสารมนุษยศาสตร์และสังคมศาสตร์ มหาวิทยาลัยมหาสารคาม
ESTUDOS SOBRE INOVAÇÃO E PROPRIEDADE INTELECTUAL
Creators: name: SÍLVIO LUIZ DE PAULA, PAULA
name: MARCOS GILSON GOMES FEITOSA, FEITOSA
name: MARCLEIDE MARIA MACÊDO PEDERNEIRAS, PEDERNEIRAS
Publisher: name: Zenodo
Year: 2025

description: No limiar de uma nova era, onde as fronteiras entre o possível e o imaginável são constantemente reescritas, a inovação se destaca como o motor propulsor de um futuro em constante transformação. As ideias, que antes eram sonhos distantes, hoje se concretizam com uma velocidade surpreendente, moldando o mundo ao nosso redor de maneiras que antes pareciam inimagináveis. Neste cenário dinâmico, o conceito de propriedade intelectual emerge não apenas como um pilar fundamental para a proteção de ideias, mas como um alicerce essencial para o fomento da criatividade e da inovação.
The response of pre-osteoblasts and osteoclasts to gallium containing mesoporous bioactive glasses
Creators: name: Gomez-Cerezo, N.
name: Verron, E.
name: Montouillout, V.
name: Fayon, F.
name: Lagadec, P.
name: Bouler, J. M.
name: Bujoli, B.
name: Arcos, D.
name: Vallet-Regi, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: Mesoporous bioactive glasses (MBGs) in the system SiO2-CaO-P2O5-Ga2O3 have been synthesized by the evaporation induced self-assembly method and subsequent impregnation with Ga cations. Two different compositions have been prepared and the local environment of Ga(III) has been characterized using 29Si, 71Ga and 31P NMR analysis, demonstrating that Ga(III) is efficiently incorporated as both, network former (GaO4 units) and network modifier (GaO6 units). In vitro bioactivity tests evidenced that Ga-containing MBGs retain their capability for nucleation and growth of an apatite-like layer in contact with a simulated body fluid with ion concentrations nearly equal to those of human blood plasma. Finally, in vitro cell culture tests evidenced that Ga incorporation results in a selective effect on osteoblasts and osteoclasts. Indeed, the presence of this element enhances the early differentiation towards osteoblast phenotype while disturbing osteoclastogenesis. Considering these results, Ga-doped MBGs might be proposed as bone substitutes, especially in osteoporosis scenarios.
description: 35 pages, 8 figures
Inclusive electron scattering off 4He
Creators: name: Bacca, S.
name: Arenhoevel, H.
name: Barnea, N.
name: Leidemann, W.
name: Orlandini, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Inclusive electron scattering off 4He is calculated exactly with a complete treatment of the final state interaction within a simple semirealistic potential model. We discuss results for both the longitudinal and the transverse response functions, at various momentum transfers. A consistent meson exchange current is implemented. Good agreement with available experimental data is found for the longitudinal response function, while some strength is still missing in the transverse response function.
description: 4 pages, 3 figures. to appear in the proceedings of the 18th International IUPAP Conference on Few-Body Problems in Physics, Santos-S.Paulo, August 21-26, 2006
Persistent-current states originating from the Hilbert space fragmentation in momentum space
Creators: name: Kunimi, Masaya
name: Danshita, Ippei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hilbert space fragmentation (HSF) is a phenomenon that the Hilbert space of an isolated quantum system splits into exponentially many disconnected subsectors. The fragmented systems do not thermalize after long-time evolution because the dynamics are restricted to a small subsector. Inspired by recent developments of the HSF, we construct the Hamiltonian that exhibits the HSF in the momentum space. We show that persistent-current (PC) states emerge due to the HSF in the momentum space. We also investigate the stability of the PC states against the random potential, which breaks the structure of the HSF, and find that the decay rate of the PC is almost independent of the current velocity.
description: 18 pages, 16 figures, 1 table
The Stable Marriage Problem: an Interdisciplinary Review from the Physicist's Perspective
Creators: name: Fenoaltea, Enrico Maria
name: Baybusinov, Izat B.
name: Zhao, Jianyang
name: Zhou, Lei
name: Zhang, Yi-Cheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Theoretical Economics (econ.TH)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We present a fascinating model that has lately caught attention among physicists working in complexity related fields. Though it originated from mathematics and later from economics, the model is very enlightening in many aspects that we shall highlight in this review. It is called The Stable Marriage Problem (though the marriage metaphor can be generalized to many other contexts), and it consists of matching men and women, considering preference-lists where individuals express their preference over the members of the opposite gender. This problem appeared for the first time in 1962 in the seminal paper of Gale and Shapley and has aroused interest in many fields of science, including economics, game theory, computer science, etc. Recently it has also attracted many physicists who, using the powerful tools of statistical mechanics, have also approached it as an optimization problem. Here we present a complete overview of the Stable Marriage Problem emphasizing its multidisciplinary aspect, and reviewing the key results in the disciplines that it has influenced most. We focus, in particular, in the old and recent results achieved by physicists, finally introducing two new promising models inspired by the philosophy of the Stable Marriage Problem. Moreover, we present an innovative reinterpretation of the problem, useful to highlight the revolutionary role of information in the contemporary economy.
description: Paper accepted for publication in Physics Reports
Abejaruco europeo – Merops apiaster Linnaeus, 1758
Creators: name: Valera, Francisco
name: Salvador Milla, Alfredo
name: Carrascal, Luis M.
Publisher: name: Salvador Milla, Alfredo
Year: 2016

description: Aves - Orden Coraciiformes - Familia Meropidae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/. Versiones anteriores: 25-04-2003; 24-06-2005; 5-08-2005; 10-01-2007; 27-11-2009; 5-05-2014
description: A comprehensive review of the natural history of the European Bee-eater Merops apiaster in Spain.
Marmota alpina – Marmota marmota (Linnaeus, 1758)
Creators: name: García-González, Ricardo
name: Herrero, Juan
name: García-Serrano, Alicia
name: Salvador Milla, Alfredo
Publisher: name: Salvador Milla, Alfredo
Year: 2017

description: Mamíferos - Orden Rodentia - Familia Sciuridae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/. Versiones anteriores: 29-05-2006, 22-04-2008; 28-11-2014
description: A comprehensive review of the natural history of the Alpine marmot Marmota marmota in Spain.
Balancing unit vectors
Creators: name: Swanepoel, Konrad J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Metric Geometry (math.MG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52A40

description: Theorem A. Let $x_1,...,x_{2k+1}$ be unit vectors in a normed plane. Then there exist signs $\epsi_1,...,\epsi_{2k+1}\in\{\pm 1\}$ such that $\norm{\sum_{i=1}^{2k+1}\epsi_i x_i}\leq 1$. We use the method of proof of the above theorem to show the following point facility location result, generalizing Proposition 6.4 of Y. S. Kupitz and H. Martini (1997). Theorem B. Let $p_0,p_1,...,p_n$ be distinct points in a normed plane such that for any $1\leq i
description: 7 pages
Attosecond metrology in circular polarization
Creators: name: Han, Meng
name: Ji, Jia-bao
name: Ueda, Kiyoshi
name: Wörner, Hans Jakob
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Attosecond metrology with linearly polarized light pulses is the basis of a highly successful research area. An even broader impact can be expected from a generalized metrology that covers two-dimensional polarization states, enabling notably the study of chiroptical phenomena on the electronic time scale. Here, we introduce and demonstrate a comprehensive approach to the generation and complete characterization of elliptically to circularly polarized attosecond pulses. The generation relies on a simple plug-in device of unprecedented simplicity. For the characterization, we introduce SPARROW (Stokes-Parameter and Attosecond Resolved Reconstruction of Optical Waveforms), which encodes the attosecond-metrology information into the photoemission angle in the polarization plane and accesses all four Stokes parameters of the attosecond pulses. Our study demonstrates a physically transparent scheme for attosecond metrology with elliptical to fully circular polarizations, applicable to both table-top and accelerator-based light sources, which will unlock studies of chiral molecules, magnetic materials and novel chiroptical phenomena on the most fundamental time scales.
description: 19 pages, 4 figures
Using Set Covering to Generate Databases for Holistic Steganalysis
Creators: name: Abecidan, Rony
name: Itier, Vincent
name: Boulanger, Jérémie
name: Bas, Patrick
name: Pevný, Tomáš
Publisher: name: arXiv
Year: 2022
Subjects: subject: Multimedia (cs.MM)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Within an operational framework, covers used by a steganographer are likely to come from different sensors and different processing pipelines than the ones used by researchers for training their steganalysis models. Thus, a performance gap is unavoidable when it comes to out-of-distributions covers, an extremely frequent scenario called Cover Source Mismatch (CSM). Here, we explore a grid of processing pipelines to study the origins of CSM, to better understand it, and to better tackle it. A set-covering greedy algorithm is used to select representative pipelines minimizing the maximum regret between the representative and the pipelines within the set. Our main contribution is a methodology for generating relevant bases able to tackle operational CSM. Experimental validation highlights that, for a given number of training samples, our set covering selection is a better strategy than selecting random pipelines or using all the available pipelines. Our analysis also shows that parameters as denoising, sharpening, and downsampling are very important to foster diversity. Finally, different benchmarks for classical and wild databases show the good generalization property of the extracted databases. Additional resources are available at github.com/RonyAbecidan/HolisticSteganalysisWithSetCovering.
description: IEEE International Workshop on Information Forensics and Security (WIFS 2022), Dec 2022, Shanghai, China
Ubiquity of bound states for the strongly coupled polaron
Creators: name: Mitrouskas, David
name: Seiringer, Robert
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the spectrum of the Fröhlich Hamiltonian for the polaron at fixed total momentum. We prove the existence of excited eigenvalues between the ground state energy and the essential spectrum at strong coupling. In fact, our main result shows that the number of excited energy bands diverges in the strong coupling limit. To prove this we derive upper bounds for the min-max values of the corresponding fiber Hamiltonians and compare them with the bottom of the essential spectrum, a lower bound on which was recently obtained in [1]. The upper bounds are given in terms of the ground state energy band shifted by momentum-independent excitation energies determined by an effective Hamiltonian of Bogoliubov-type.
description: 43 pages, 1 figure
Single-site Rydberg addressing in 3D atomic arrays for quantum computing with neutral atoms
Creators: name: Shi, Xiao-Feng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Neutral atom arrays are promising for large-scale quantum computing especially because it is possible to prepare large-scale qubit arrays. An unsolved issue is how to selectively excite one qubit deep in a 3D atomic array to Rydberg states. In this work, we show two methods for this purpose. The first method relies on a well-known result: in a dipole transition between two quantum states driven by two off-resonant fields of equal strength but opposite detunings $\pmΔ$, the transition is characterized by two counter-rotating Rabi frequencies $Ωe^{\pm iΔt}$~[or $\pmΩe^{\pm iΔt}$ if the two fields have a $π$-phase difference]. This pair of detuned fields lead to a time-dependent Rabi frequency $2Ω\cos(Δt)$~[or $2iΩ\sin(Δt)$], so that a full transition between the two levels is recovered. We show that when the two detuned fields are sent in different directions, one atom in a 3D optical lattice can be selectively addressed for Rydberg excitation, and when its state is restored, the state of any nontarget atoms irradiated in the light path is also restored. Moreover, we find that the Rydberg excitation by this method can significantly suppress the fundamental blockade error of a Rydberg gate, paving the way for a high-fidelity entangling gate with commonly used quasi-rectangular pulse that is easily obtained by pulse pickers. Along the way, we find a second method for single-site Rydberg addressing in 3D, where a selected target atom can be excited to Rydberg state while preserving the state of any nontarget atom due to a spin echo sequence. The capability to selectively address a target atom in 3D atomic arrays for Rydberg excitation makes it possible to design large-scale neutral-atom information processor based on Rydberg blockade.
description: 17 pages, 9 figures
Discovery of the new slowly pulsating B star HD 163830 (B5II/III) from MOST spacebased photometry
Creators: name: Aerts, C.
name: De Cat, P.
name: Kuschnig, R.
name: Matthews, J. M.
name: Guenther, D. B.
name: Moffat, A. F. J.
name: Rucinski, S. M.
name: Sasselov, D.
name: Walker, G. A. H.
name: Weiss, W. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a new slowly pulsating B (SPB) star, with the largest number of detected frequencies to date by more than a factor of three, based on 37 days of MOST (Microvariability & Oscillations of STars) satellite guide star photometry. The star HD 163830 (V = 9.3, B5II/III) varies in twenty detected frequencies in the range $0.035 - 1.06$ d$^{-1}$ ($0.4 - 12.3 ~ μ$Hz) with amplitudes from 0.7 to 7.6 mmag ($S/N$ from {4 to 43}). Eighteen of these frequencies are consistent with low-degree, high-order nonradial g-modes {of seismic models of an evolved 4.5$M_{\odot}$ star. We are unable to identify one unique model due to lack of mode identifications. The lowest two frequencies may be associated with the rotation of HD 163830, but firm proof of this must await future spectroscopic data.
description: 4 pages, 3 figures, accepted for publication in The Astrophysical Journal Letters
On the efficiency of path sampling methods for the calculation of free energies from non-equilibrium simulations
Creators: name: Lechner, Wolfgang
name: Dellago, Christoph
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: According to the Jarzynski theorem, equilibrium free energy differences can be calculated from the statistics of work carried out during non-equilibrium transformations. Although exact, this approach can be plagued by large statistical errors, particularly for systems driven strongly away from equilibrium. Recently, several approaches have been suggested to reduce these errors. In this paper we study the efficiency of these methods using two models for which analytical solutions exist.
DiME and AGVis: A Distributed Messaging Environment and Geographical Visualizer for Large-scale Power System Simulation
Creators: name: Parsly, Nicholas
name: Wang, Jinning
name: West, Nick
name: Zhang, Qiwei
name: Cui, Hantao
name: Li, Fangxing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper introduces the messaging environment and the geographical visualization tool of the CURENT Large-scale Testbed (LTB) that can be used for large-scale power system closed-loop simulation. First, Distributed Messaging Environment (DiME) implements an asynchronous shared workspace to enable high-concurrent data exchange. Second, Another Grid Visualizer (AGVis) is presented as a geovisualization tool that facilitates the visualization of real-time power system simulation. Third, case studies show the use of DiME and AGVis. The results demonstrate that, with the modular structure, the LTB is capable of not only federal use for real-time, large-scale power system simulation, but also independent use for customized power system research.
description: 5 pages, 7 figures, conference
Probing Robust Majorana Signatures by Crossed Andreev Reflection with a Quantum Dot
Creators: name: Feng, Guan-Hao
name: Zhang, Hong-Hao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a three-terminal structure to probe robust signatures of Majorana zero modes. This structure consists of a quantum dot coupled to the normal metal, s-wave superconducting and Majorana Y-junction leads. The zero-bias differential conductance at zero temperature of the normal-metal lead peaks at $2e^{2}/h$, which will be deflected after Majorana braiding. This quantized conductance can entirely arise from the Majorana-induced crossed Andreev reflection, protected by the energy gap of the superconducting lead. We find that the effect of thermal broadening is significantly suppressed when the dot is on resonance. In the case that the energy level of the quantum dot is much larger than the superconducting gap, tunneling processes are dominated by Majorana-induced crossed Andreev reflection. Particularly, a novel kind of crossed Andreev reflection equivalent to the splitting of charge quanta $3e$ occurs after Majorana braiding.
description: 15 pages, 8 figures, accepted for publication in Physical Review B
Identification of novel susceptibility methylation loci for pancreatic cancer in a two-phase epigenome-wide association study
Creators: name: Wang, Ziqiao
name: Lu, Yue
name: Fornage, Myriam
name: Jiao, Li
name: Shen, Jianjun
name: Li, Donghui
name: Wei, Peng
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer

description: The role of DNA methylation and its interplay with gene expression in the susceptibility to pancreatic cancer (PanC) remains largely unexplored. To fill in this gap, we conducted an integrative two-phase epigenome-wide association study (EWAS) of PanC using genomic DNA from 44 cases and 556 controls (20 local controls and 536 public controls in the Framingham Heart Study) in phase 1 and 23 cases and 22 controls in phase 2. We validated the findings using pre-diagnostic blood samples from 13 cases and 26 controls in the Women’s Health Initiative (WHI) Study. We further examined gene expression in peripheral leukocytes of 47 cases and 31 controls involved in the methylation study using RNA sequencing and performed bidirectional Mendelian randomization (MR) analysis using existing single nucleotide polymorphism (SNP) data. In phase 1, we identified 2776 significantly differentially methylated CpG sites (DMPs) and 154 significantly differentially methylated regions (DMRs). In phase 2, we validated six DMPs (in or near AIM2, DGKA, STK39, and TNFSF8) and three DMRs (in or near nc886, LY6G5C, and HLA-DPB1). The DMR near nc886 was further validated in the WHI samples (P = 6.69 × 10−5). MR analysis suggested that the CpG sites cg00308130 and cg16684184 for nc886 and cg16875057 for STK39 were causally related to PanC susceptibility and that PanC influenced methylation of cg15354065 for DGKA. This first integrative EWAS of PanC provides novel insights into the role of DNA methylation and its interplay with SNPs and gene expression in the disease susceptibility.
Development and evaluation of copper-containing mesoporous bioactive glasses for bone defects therapy
Creators: name: Jimenez-Holguin, J
name: Sanchez-Salcedo, S
name: Vallet-Regi, M
name: Salinas, A J
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Mesoporous bioactive glasses, MBG, are gaining increasing interest in the design of new biomaterials for bone defects treatment. An important research trend to enhance their biological behavior is the inclusion of moderate amounts of oxides with therapeutical action such as CuO. In this paper, MBG with composition were synthesized, investigating the influence of the CuO content and some synthesis parameters in their properties. Two batch were developed; first one using HCl as catalyst and chlorides as CaO and CuO precursors, second one, using HNO3 and nitrates. MBG of chlorides batch exhibited calcium/copper phosphate nanoparticles, between 10 and 20 nm. Nevertheless, CuO- containing MBG of nitrates batch showed nuclei of metallic copper nanoparticles larger than 50 nm and quicker in vitro bioactive responses. Thus, they were coated by an apatite-like layer after 24 h soaked in simulated body fluid, a remarkably short period for MBG containing up to 5 % of CuO. A model, focused in the copper location in the glass network, was proposed to relate nanostructure and in vitro behaviour. Moreover, after 24 h in MEM or THB culture media, all the MBG released therapeutic amounts of Ca2+ and Cu2+ ions. Because the quick bioactive response in SBF, the capacity to host biomolecules in their pores and to release therapeutic concentrations of Ca2+ and Cu2+ ions, MBG of the nitrate batch are considered as excellent biomaterials for bone regeneration.
description: 28 pages, 10 figures
Atomic-resolution imaging of magnetism via ptychographic phase retrieval
Creators: name: Cui, Jizhe
name: Sha, Haozhi
name: Yang, Wenfeng
name: Yu, Rong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Atomic-scale characterization of spin textures in solids is essential for understanding and tuning properties of magnetic materials and devices. While high-energy electrons are employed for atomic-scale imaging of materials, they are insensitive to the spin textures. In general, the magnetic contribution to the phase of high-energy electron wave is 1000 times weaker than the electrostatic potential. Via accurate phase retrieval through electron ptychography, here we show that the magnetic phase can be separated from the electrostatic one, opening the door to atomic-resolution characterization of spin textures in magnetic materials and spintronic devices.
description: 20 pages, 9 figures
title: Ground Snow Loads for ASCE 7-22 – What Has Changed and Why?
Creators: name: Maguire, Marc
name: Bean, Brennan
name: Harris, James
name: Liel, Abbie
name: Russell, Scott
Publisher: name: Utah State University
Year: 2021

description: The changes to the ASCE 7 ground snow load maps proposed for the 2022 edition target a uniform reliability rather than a uniform hazard – an important distinction – and are the first of their kind in ASCE 7. Previously, the ASCE 7 snow loads used a uniform-hazard 50-year mean recurrence interval (MRI) with a 1.6 load factor. The newly proposed loads directly target the safety levels stipulated in Chapter 1 of ASCE 7, resulting in a strength design level load that is to be used with a load factor of 1.0. This paper describes changes in design provisions that result from this transition to reliability-targeted loads and provides reasons for some of these differences.
Additional file 1 of Abnormal lipid droplets accumulation induced cognitive deficits in obstructive sleep apnea syndrome mice via JNK/SREBP/ACC pathway but not through PDP1/PDC pathway
Creators: name: Li, Dongze
name: Xu, Na
name: Hou, Yanyan
name: Ren, Wenjing
name: Zhang, Na
name: Wang, Xi
name: Sun, Yeying
name: Lu, Wenxue
name: Qu, Guiwu
name: Yu, Yan
name: Lv, Changjun
name: Han, Fang
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: Additional file 1: S1. CIH treatment did not significant influence the expression of PDP1/PDHA1 in vitro. (A, B) The IH program and the sequence of experiment process. (C) BODIPY (green) and DAPI (blue) staining of the HT22. Magnification:600×. (D-F) The number of LDs per cell. Compared with the NC group, the number of LDs in the IH group were obviously increased. However, treated with 3-FP could not reduce the number of LDs. (G, H) Quantitative real-time PCR experiments showed the expression levels of PDP1 and PDHA1 in Ht22 cells. The results showed no statistically difference among four groups. (I-L) The PDP1/PDHA1 pathway was activated by Western blot, and no statistically difference among four groups. (M) The activity of PDC and no significant difference could be found. All experiments were repeated three times. Data are expressed as the mean ± SEM. Statistical analysis was performed through two-way ANOVA. The treated samples were different from the controls at p < 0.05.
Variational method for estimating the rate of convergence of Markov Chain Monte Carlo algorithms
Creators: name: Casey, Fergal P.
name: Waterfall, Joshua J.
name: Gutenkunst, Ryan N.
name: Myers, Christopher R.
name: Sethna, James P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We demonstrate the use of a variational method to determine a quantitative lower bound on the rate of convergence of Markov Chain Monte Carlo (MCMC) algorithms as a function of the target density and proposal density. The bound relies on approximating the second largest eigenvalue in the spectrum of the MCMC operator using a variational principle and the approach is applicable to problems with continuous state spaces. We apply the method to one dimensional examples with Gaussian and quartic target densities, and we contrast the performance of the Random Walk Metropolis-Hastings (RWMH) algorithm with a ``smart'' variant that incorporates gradient information into the trial moves. We find that the variational method agrees quite closely with numerical simulations. We also see that the smart MCMC algorithm often fails to converge geometrically in the tails of the target density except in the simplest case we examine, and even then care must be taken to choose the appropriate scaling of the deterministic and random parts of the proposed moves. Again, this calls into question the utility of smart MCMC in more complex problems. Finally, we apply the same method to approximate the rate of convergence in multidimensional Gaussian problems with and without importance sampling. There we demonstrate the necessity of importance sampling for target densities which depend on variables with a wide range of scales.
description: 27 pages, 8 figures. Added paragraph to intro and results section, format for Phys. Rev. E
Accelerated electron thermometer: observation of 1D Planck radiation
Creators: name: Lynch, Morgan H.
name: Ievlev, Evgenii
name: Good, Michael R. R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We report on the observation of thermal photons from an accelerated electron via examination of radiative beta decay of free neutrons measured by the RDK II collaboration. The emitted photon spectrum is shown to corroborate a thermal distribution consistent with the dynamical Casimir effect. Supported by a robust chi-squared statistic, we find the photons reside in a one-dimensional Planck spectrum with a temperature predicted by the moving mirror model.
description: 17 pages, 6 figures: Accepted for publication at Progress of Theoretical and Experimental Physics
Transition Slow-Down by Rydberg Interaction of Neutral Atoms and a Fast Controlled-NOT Quantum Gate
Creators: name: Shi, Xiao-Feng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Applied Physics (physics.app-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Exploring controllable interactions lies at the heart of quantum science. Neutral Rydberg atoms provide a versatile route toward flexible interactions between single quanta. Previous efforts mainly focused on the excitation annihilation~(EA) effect of the Rydberg blockade due to its robustness against interaction fluctuation. We study another effect of the Rydberg blockade, namely, the transition slow-down~(TSD). In TSD, a ground-Rydberg cycling in one atom slows down a Rydberg-involved state transition of a nearby atom, which is in contrast to EA that annihilates a presumed state transition. TSD can lead to an accurate controlled-{\footnotesize NOT}~({\footnotesize CNOT}) gate with a sub-$μ$s duration about $2π/Ω+ε$ by two pulses, where $ε$ is a negligible transient time to implement a phase change in the pulse and $Ω$ is the Rydberg Rabi frequency. The speedy and accurate TSD-based {\footnotesize CNOT} makes neutral atoms comparable~(superior) to superconducting~(ion-trap) systems.
description: 15 pages, 4 figures. Full text can be downloaded by first clicking the title of this work at the site (https://faculty.xidian.edu.cn/SXF/en/lwcg/389995/list/index.htm) and then locating the pdf item
Eisenhart's theorem and the causal simplicity of Eisenhart's spacetime
Creators: name: Minguzzi, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We give a causal version of Eisenhart's geodesic characterization of classical mechanics. We emphasize the geometric, coordinate independent properties needed to express Eisenhart's theorem in light of modern studies on the Bargmann structures (lightlike dimensional reduction, pp-waves). The construction of the space metric, Coriolis 1-form and scalar potential through which the theorem is formulated is shown in detail, and in particular it is proved a one-to-one correspondence between Newtonian frames and Abelian connections on suitable lightlike principal bundles. The relation of Eisenhart's theorem in the lightlike case with a Fermat type principle is pointed out. The operation of lightlike lift is introduced and the existence of minimizers for the classical action is related to the causal simplicity of Eisenhart's spacetime.
description: Latex2e, 29 pages, 2 figures, uses psfrag package. v2: a problem with theorem 5.5, which was erroneously stated twice, and some misprints have been fixed, v3: change of definition of function I in theorem 5.5