cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Wave Equation for Fractal Solid String
Creators: name: Tarasov, Vasily E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We use the fractional integrals to describe fractal solid. We suggest to consider the fractal solid as special (fractional) continuous medium. We replace the fractal solid with fractal mass dimension by some continuous model that is described by fractional integrals. The fractional integrals are considered as approximation of the integrals on fractals. We derive fractional generalization of the action functional and the Euler-Lagrange equation for the fractal solid string.The solution of wave equation for fractal solid string is considered.
description: 8 pages, 2 figures, LaTeX
Search setup for long-duration transient gravitational waves from glitching pulsars during LIGO-Virgo third observing run
Creators: name: Modafferi, Luana M.
name: Moragues, Joan
name: Keitel, David
name: Collaboration, LIGO Scientific
name: Collaboration, Virgo
name: Collaboration, KAGRA
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Pulsars are spinning neutron stars which emit an electromagnetic beam. We expect pulsars to slowly decrease their rotational frequency. However, sudden increases of the rotational frequency have been observed from different pulsars. These events are called "glitches" and they are followed by a relaxation phase with timescales from days to months. Gravitational wave (GW) emission may follow these peculiar events. We give an overview of the setup for an analysis of GW data from the Advanced LIGO and Virgo third observing run (O3) arXiv:2112.10990 searching for transient GW signals lasting hours to months after glitches in known pulsars. The search method consists of placing a template grid in frequency-spindown space with fixed grid spacings. Then, for each point we compute the transient F-statistic which is maximized over a set of transient parameters like the duration and start time of the potential signals. A threshold on the detection statistic is then set, and we search for peaks over the parameter space for each candidate.
description: 5 pages, submitted to Proceedings of TAUP 2021
Sensitivity of the interlayer magnetoresistance of layered metals to intralayer anisotropies
Creators: name: Kennett, Malcolm P.
name: McKenzie, Ross H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Many of the most interesting and technologically important electronic materials discovered in the past two decades have two common features: a layered crystal structure and strong interactions between electrons. Two of the most fundamental questions about such layered metals concern the origin of intralayer anisotropies and the coherence of interlayer charge transport. We show that angle dependent magnetoresistance oscillations (AMRO) are sensitive to anisotropies around an intralayer Fermi surface. Hence, AMRO can be a probe of intralayer anisotropies that is complementary to angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy (STM). However, AMRO are not very sensitive to the coherence of the interlayer transport. We illustrate this with comparisons to recent AMRO experiments on an overdoped cuprate.
description: 7 pages, 3 figures
In-plane current-voltage characteristics and oscillatory Josephson-vortex flow resistance in La-free Bi$_{2+x}$Sr$_{2-x}$CuO$_{6+δ}$ single crystals in high magnetic fields
Creators: name: Vedeneev, S. I.
name: Maude, D. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have investigated the in-plane $I(V)$ characteristics and the Josephson vortex flow resistance in high-quality La-free Bi$_{2+x}$Sr$_{2-x}$CuO$_{6+δ}$ (Bi2201) single crystals in parallel and tilted magnetic fields at temperatures down to 40 mK. For parallel magnetic fields below the resistive upper critical field $H^{*}_{c2}$, the $I(V)$ characteristic obey a power-law with a smooth change with increasing magnetic-field of the exponent from above 5 down to 1. In contrast to the double-layer cuprate Bi2212, the observed smooth change suggests that there is no change in the mechanism of dissipation (no Kosterlitz-Thouless transition) over the range of temperatures investigated. At small angles between the applied field and the $ab$-plane, prominent current steps in the $I(V)$ characteristics and periodic oscillations of Josephson-vortex flow resistance are observed. While the current steps are periodic in the voltage at constant fields, the voltage position of the steps, together with the flux-flow voltage, increases nonlinearly with magnetic field. The $ab$-flow resistance oscillates as a function of field with a constant period over a wide range of magnetic fields and temperatures. The current steps in the $I(V)$ characteristics and the flow resistance oscillations can be linked to the motion of Josephson vortices across layers.
Traffic Forecasting Report – 2007
Creators: name: Hamilton, David
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2008
Subjects: subject: Transportation Engineering

description: This is the sixth edition of the Traffic Forecasting Report (TFR). This edition of the TFR contains the latest (predominantly 2007) forecasting/modeling data as follows:      Functional class average traffic volume growth rates and trends     Vehicle miles traveled statewide total by functional class     ATR locations, K-factors, and ADTs     Functional class average K-factors and D-factors     Functional class average truck volumes, truck percentages, ESAL calculation factors, and vehicle types     Kentucky Statewide Model Summary     List of MPO (urbanized) and county-level models     Socioeconomic data sources for models and summary of MUG (model users group) meetings     ADT and DHV Count Factors     Hourly Volume Percentage by Functional Class     Kentucky population projections by county     Traffic Volume Growth Rates by County and Functional Class
Impact of the transport supercurrent on the density of states in the weak link
Creators: name: Shevchenko, Sergey N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The impact of the transport supercurrent on the density of states in the superconducting thin film with the weak link is investigated. At the weak link the order parameter is locally suppressed due to the order parameter phase difference. This results in the appearance of the zero-energy states, which are strongly influenced by the supercurrent especially at the phase difference close to Pi. The observability of these effects with the scanning tunneling spectroscopy is discussed.
description: 6 pages, 2 figures; v.2: minor changes (Fig. 1 improved, Refs. added, etc.)
Gravitating semirelativistic N-boson systems
Creators: name: Hall, Richard L.
name: Lucha, Wolfgang
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 81Q05; 81V70; 81V17

description: Analytic energy bounds for N-boson systems governed by semirelativistic Hamiltonians of the form H=\sum_{i=1}^N(p_i^2 + m^2)^{1/2} - sum_{1=i0, are derived by use of Jacobi relative coordinates. For gravity v=c/N, these bounds are substantially tighter than earlier bounds and they are shown to coincide with known results in the nonrelativistic limit.
description: 7 pages, 2 figures It is now proved that the reduced Hamiltonian is bounded below by the simple N/2 Hamiltonian
QCD and Top-Quark Results from the Tevatron
Creators: name: Zielinski, Marek
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Selected recent QCD and top-quark results from the Tevatron are reviewed, aiming to illustrate progression from basic studies of QCD processes to verification of perturbative calculations and Monte Carlo simulation tools, and to their applications in more novel and complex cases, like top-quark studies and searches for new physics.
description: Presented at the Physics at LHC 2006 Conference for the CDF and D0 Collaborations; submitted to Conference Proceedings 12 pp., 26 Figs
The Properties and Evolutions of Starspots on Three Detached Eclipsing Binaries in the LAMOST-Kepler survey
Creators: name: Wang, Jiaxin
name: Fu, Jianning
name: Zong, Weikai
name: Pan, Yang
name: Niu, Hubiao
name: Zhang, Bo
name: Zhang, Yong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The spotted detached eclipsing binary (DEB) offers insights into starspots on the binary. Three spotted DEBs, KIC 8097825, KIC 6859813, and KIC 5527172, which were observed by the Kepler photometry and LAMOST spectroscopy, are studied in this work. The physical parameters of binaries are determined by binary modeling. The sizes, lifetimes, and single/double-dip ratio (SDR) of starspots are derived by starspot analysis. KIC 8097825 has large starspots. KIC 6859813 has a spot rotation period shorter than its orbital period but the system should be synchronized inferred from timescale estimation. The difference may be the result of the surface differential rotation. The KIC 5527172 has a long spot lifetime and an M dwarf component with an inflation radius. The primaries of these binaries and the secondary of KIC 8097825 have spots. Adding spotted DEBs of literature, we compare the starspots on binaries with those on the single stars. The spot sizes of starspots on 65% binaries are smaller than the median of those on single stars. The lifetimes of starspots on binaries are consistent with those on single stars when the rotation periods are larger than 3 days. SDRs for half of the binaries are consistent with those of single star systems, while another half are smaller. The relative lifetime positively correlates with the RMS and SDR but negatively correlates with the rotation period. These relations are similar to those of spots on the single star systems. Binaries with luminosity ratios close to the unit tend to have more double dips.
description: 19 pages, 14 figures
การพัฒนาโมเดลจริยธรรมการตลาดสำหรับ SME ในอุตสาหกรรมท่องเที่ยวไทยรองรับการเข้าสู่ประชาคมอาเซียน
Creators: name: ปริญ ลักษิตามาศ
name: ชัยพล หอรุ่งเรือง
name: ศิริโสภา ศิริบวรเกียรติ
name: พิษณุ สันทรานันท์
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: จริยธรรมการตลาด, อุตสาหกรรมท่องเที่ยวไทย, ประชาคมอาเซียน

description: พิเศษ, 7, วารสารปัญญาภิวัฒน์
Open Science Realities: How Open is Open?
Creators: name: Tananbaum, Greg
name: Caprarelli, Graziella
name: Raia, Natalie
name: Maurer, Gregory E.
name: Schuster, Doug
name: Lehnert, Kerstin
name: Stall, Shelley
name: Vrouwenvelder, Kristina
Publisher: name: Zenodo
Year: 2023
Subjects: publishing
open science
data sharing
data management

description: Open Science Realities: How Open is Open?

Town Hall at AGU23 in San Francisco, California

Tuesday December 12, 2023

Abstract: 

Open science is transformative, removing barriers to sharing science and increasing reproducibility and transparency. The benefits of open science are maximized when its principles are incorporated throughout the research process, through working collaboratively with community members and sharing data, software, workflows, samples, and other aspects of scientific research openly where it can be reused, distributed, and reproduced. However, across the Earth, space, and environmental science disciplines, there are different barriers, incentives, and considerations, particularly for sharing data. In this session, following up on a productive How Open is Open? conversation at AGU ‘22, we will discuss different disciplinary considerations affecting sharing and publishing data, particularly for primarily observational data vs derivative data products; for simulation and model data; and for physical samples. We’ll hear from AGU community members with a wide range of experiences across open science practices, followed by an audience discussion with speakers.
Seidel, Thomas A. und Spehr, Christopher (Hrsg.): Das evangelische Pfarrhaus
Creators: name: Koslowski, Jutta
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 63 Nr. 4 (2014): Ökumenische Rundschau, Band 63, Heft 4
Fast and differentiable simulation of driven quantum systems
Creators: name: Shillito, Ross
name: Gross, Jonathan A.
name: Di Paolo, Agustin
name: Genois, Élie
name: Blais, Alexandre
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The controls enacting logical operations on quantum systems are described by time-dependent Hamiltonians that often include rapid oscillations. In order to accurately capture the resulting time dynamics in numerical simulations, a very small integration time step is required, which can severely impact the simulation run-time. Here, we introduce a semi-analytic method based on the Dyson expansion that allows us to time-evolve driven quantum systems much faster than standard numerical integrators. This solver, which we name Dysolve, efficiently captures the effect of the highly oscillatory terms in the system Hamiltonian, significantly reducing the simulation's run time as well as its sensitivity to the time-step size. Furthermore, this solver provides the exact derivative of the time-evolution operator with respect to the drive amplitudes. This key feature allows for optimal control in the limit of strong drives and goes beyond common pulse-optimization approaches that rely on rotating-wave approximations. As an illustration of our method, we show results of the optimization of a two-qubit gate using transmon qubits in the circuit QED architecture.
description: 14 pages, 8 figures
From the Hofstadter to the Fibonacci butterfly
Creators: name: Naumis, Gerardo G.
name: Lopez-Rodriguez, F. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We show that the electronic spectrum of a tight-binding Hamiltonian defined in a quasiperiodic chain with an on-site potential given by a Fibonacci sequence, can be obtained as a superposition of Harper potentials. The electronic spectrum of the Harper equation is a fractal set, known as Hofstadter butterfly. Here we show that is possible to construct a similar butterfly for the Fibonacci potential just by adding harmonics to the Harper potential. As a result, the equations in reciprocal space for the Fibonacci case have the form of a chain with a long range interaction between Fourier components. Then we explore the transformation between both spectra, and specifically the origin of energy gaps due to the analytical calculation of the components in reciprocal space of the potentials. We also calculate some localization properties by finding the correlator of each potential.
description: 7 pages, 4 figures
แนวทางการพัฒนากลยุทธ์การตลาดของอาบน้ำแร่และภูมิปัญญาไทยเพื่อส่งเสริมอุตสาหกรรมการท่องเที่ยว: ดอยปู่หมื่น
Creators: name: รัฐนันท์ พงศ์วิริทธิ์ธร
name: ภาคภูมิ ภัควิภาส
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: กลยุทธ์การตลาด, ธุรกิจน้ำแร่, ภูมิปัญญาไทย

description: พิเศษ, 7, วารสารปัญญาภิวัฒน์
THE ROLE OF COMMUNICATIVE LANGUAGE TEACHING (CLT) IN ENHANCING SPEAKING COMPETENCE
Creators: name: Menglibekov, Reypnazar
Publisher: name: Zenodo
Year: 2024

description: Communicative Language Teaching (CLT) has emerged as one of the most influential approaches in language education, emphasizing interaction and communication as the core of learning. In a global context where English proficiency is increasingly essential, speaking competence has become a key focus in language classrooms. However, traditional methods of language teaching, which often prioritize grammar and written skills, may not effectively develop students’ speaking abilities. CLT shifts this focus by encouraging real-life communication and active student participation, making it a promising strategy for enhancing speaking skills. This thesis explores the role of CLT in improving students’ speaking competence, particularly in English as a Foreign Language (EFL) settings. By investigating how CLT impacts learners' fluency, confidence, and overall communicative abilities, the study aims to highlight the potential of this approach in developing competent English speakers and its implications for modern language teaching practices.
From Distributed Machine Learning To Federated Learning: In The View Of Data Privacy And Security
Creators: name: Shen, Sheng
name: Zhu, Tianqing
name: Wu, Di
name: Wang, Wei
name: Zhou, Wanlei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Federated learning is an improved version of distributed machine learning that further offloads operations which would usually be performed by a central server. The server becomes more like an assistant coordinating clients to work together rather than micro-managing the workforce as in traditional DML. One of the greatest advantages of federated learning is the additional privacy and security guarantees it affords. Federated learning architecture relies on smart devices, such as smartphones and IoT sensors, that collect and process their own data, so sensitive information never has to leave the client device. Rather, clients train a sub-model locally and send an encrypted update to the central server for aggregation into the global model. These strong privacy guarantees make federated learning an attractive choice in a world where data breaches and information theft are common and serious threats. This survey outlines the landscape and latest developments in data privacy and security for federated learning. We identify the different mechanisms used to provide privacy and security, such as differential privacy, secure multi-party computation and secure aggregation. We also survey the current attack models, identifying the areas of vulnerability and the strategies adversaries use to penetrate federated systems. The survey concludes with a discussion on the open challenges and potential directions of future work in this increasingly popular learning paradigm.
description: 21 pages, 4 figures, 4 tables, 76 references
Evoking the Post-industrial Landscape Memories through Mixed Reality Soundscape
Creators: name: Yixiao Fu
Publisher: name: Carnegie Mellon University
Year: 2021
Subjects: subject: 120199 Architecture not elsewhere classified
subject: FOS: Civil engineering

description: Located at the intersections between the landscape, spectral memory, sound, and contemporary media technology, this thesis explores how spatialized soundscapes may serve as media to evoke the spectral memories of physical landscape? An audio walk “Inner Memory of the Post-Industry” was prepared to engage Carrie Furnace - a Pittsburgh historical landmark - as a proof of concept to understand the design of spatialized soundscape. Through the development of mixed reality audio walk, the experience design challenges the linear narrative structure that is commonly found in traditional audio walks (constrained, guided) and proposes a space- driven auditory wandering (open-ended, unguided). Mobile mixed reality is utilized to support sound localization and spatialization and this offers a more flexible and immersive way of exploring the landscape. The spectral memories of the landscape are realized through a virtual soundscape combing environment sound effects with oral history recordings. Taking advantage of the post-industrial landscape's distinctive aesthetics and it's spatial complexity as the stage for soundscape design, this thesis explores the juxtaposition between a multi-sensory visual and sonic experience and how it allows people to empathize with historical events to reinterpret the landscape identity. Building upon the proposed technical infrastructure for audio-based mixed reality, this thesis also introduces a workflow of visualizing and designing spatialized soundscapes.
LBT search for companions and sub-structures in the (pre)transitional disk of AB Aurigae
Creators: name: Jorquera, Sebastián
name: Bonnefoy, Mickaël
name: Betti, Sarah
name: Chauvin, Gaël
name: Buenzli, Esther
name: Pérez, Laura M.
name: Follette, Katherine B.
name: Hinz, Philip M.
name: Boccaletti, Anthony
name: Bailey, Vanessa
name: Biller, Beth
name: Defrère, Denis
name: Eisner, Josh
name: Henning, Thomas
name: Klahr, Hubert
name: Leisenring, Jarron
name: Olofsson, Johan
name: Schlieder, Joshua E.
name: Skemer, Andrew J.
name: Skrutskie, Michael F.
name: Van Boekel, Roy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Multi-wavelengths high-resolution imaging of protoplanetary disks has revealed the presence of multiple, varied substructures in their dust and gas components which might be signposts of young, forming planetary systems. AB Aurigae bears an emblematic (pre)transitional disk showing spiral structures observed in the inner cavity of the disk in both the sub-millimeter (ALMA; 1.3mm, $^{12}$CO) and near-infrared (SPHERE; 1.5-2.5$μ$m) wavelengths which have been claimed to arise from dynamical interactions with a massive companion. In this work, we present new deep $K_s$ (2.16$μ$m) and L' (3.7$μ$m) band images of AB Aurigae obtained with LMIRCam on the Large Binocular Telescope, aimed for the detection of both planetary companions and extended disk structures. No point source is recovered, in particular at the outer regions of the disk, where a putative candidate ($ρ= 0.681", PA = 7.6^{\circ}$) had been previously claimed. The nature of a second innermost planet candidate ($ρ= 0.16'', PA = 203.9^{\circ}$) can not be investigated by the new data. We are able to derive 5$σ$ detection limits in both magnitude and mass for the system, going from 14 \Mjup at 0.3'' (49 au) down to 3-4 \Mjup at 0.6'' (98 au) and beyond, based on the ATMO 2020 evolutionary models. We detect the inner spiral structures (< 0.5'') resolved in both CO and polarimetric H-band observations. We also recover the ring structure of the system at larger separation (0.5-0.7") showing a clear south-east/north-west asymmetry. This structure, observed for the first time at L'-band, remains interior to the dust cavity seen at ALMA, suggesting an efficient dust trapping mechanism at play in the disk.
description: 13 pages, 5 figures, accepted on ApJ
Conductivity of graphene: How to distinguish between samples with short and long range scatterers
Creators: name: Trushin, Maxim
name: Schliemann, John
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Applying a quasiclassical equation to carriers in graphene we found a way how to distinguish between samples with the domination of short and long range scatterers from the conductivity measurements. The model proposed explains recent transport experiments with chemically doped as well as suspended graphene.
description: 6 pages, 3 figures, some references have been corrected and revised
Unification of QM and Relativity by enhancing Einstein Tensor Field to a Quantum State Vector Tensor field
Creators: name: Padgett, Jason
Publisher: name: Zenodo
Year: 2024

description: This research explores an intersection between Quantum Information Holography (QIH) and General Relativity (GR). It delves into how quantum mechanics, which governs the world of the very small, like atoms and particles, is linked to Einsteins's theory of gravity, whcih describes the bending of space and time by massive objects. The key focus is on Quantum State Vectors (QSVs) in QIH, which provide detailed descriptions of quantum particles, and how these can be mathematically aligned with hGR's description of spacetime curvature.

A significant aspect of the study involces conceptualizing Hawking Radiation- a theoretical radiation emitted by black holes - in terms of QSVs. This approach attempts to bridge the two theories through complex mathematical equations. These equations aim to translate the quantum information encoded in the QSVs into a format that resonates with the spacetime curvature described in GR.

Ultimately, this research proposes that the behaviors and charactreristics of quantum particles might play a crucial role in influencing the curvature of spacetime. This hypothesis presents a novel way of understanding gravity, suggesting it could emerge from quantum processes. By potentially unifying quantum mechanics and general relativity, the work opens new avenues for exploring and comprehending the fundamental nature of the universe.

Leonard Susskind first discovered that the Cosine of the QSV define probability of spin up or spin down. This theory builds upon his work.
Topological Quantum Computing and the Jones Polynomial
Creators: name: Lomonaco,, Samuel J.
name: Kauffman, Louis H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we give a description of a recent quantum algorithm created by Aharonov, Jones, and Landau for approximating the values of the Jones polynomial at roots of unity of the form exp(2$π$i/k). This description is given with two objectives in mind. The first is to describe the algorithm in such a way as to make explicit the underlying and inherent control structure. The second is to make this algorithm accessible to a larger audience.
description: 19 pages, 27 figures
Ghost D-brane, Supersymmetry and Matrix Model
Creators: name: Terashima, Seiji
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this note we study the world volume theory of pairs of D-brane and ghost D-brane, which is shown to have 16 linear supersymmetries and 16 nonlinear supersymmetries. In particular we study a matrix model based on the pairs of D(-1)-brane and ghost D(-1)-brane. Since such pairs are supposed to be equivalent to the closed string vacuum, we expect all 32 supersymmetries should be unbroken. We show that the world volume theory of the pairs of D-brane and ghost D-brane has unbroken 32 supersymmetries even though a half of them are nonlinearly realized.
description: 12 pages, references added
Quantum Mechanics and General Relativity: A Unified Approach via QIH
Creators: name: Padgett, Jason
Publisher: name: Zenodo
Year: 2024

description: This research explores an intersection between Quantum Information Holography (QIH) and General Relativity (GR). It delves into how quantum mechanics, which governs the world of the very small, like atoms and particles, is linked to Einsteins's theory of gravity, whcih describes the bending of space and time by massive objects. The key focus is on Quantum State Vectors (QSVs) in QIH, which provide detailed descriptions of quantum particles, and how these can be mathematically aligned with hGR's description of spacetime curvature.

A significant aspect of the study involces conceptualizing Hawking Radiation- a theoretical radiation emitted by black holes - in terms of QSVs. This approach attempts to bridge the two theories through complex mathematical equations. These equations aim to translate the quantum information encoded in the QSVs into a format that resonates with the spacetime curvature described in GR.

Ultimately, this research proposes that the behaviors and charactreristics of quantum particles might play a crucial role in influencing the curvature of spacetime. This hypothesis presents a novel way of understanding gravity, suggesting it could emerge from quantum processes. By potentially unifying quantum mechanics and general relativity, the work opens new avenues for exploring and comprehending the fundamental nature of the universe.

Leonard Susskind first discovered that the Cosine of the QSV define probability of spin up or spin down. This theory builds upon his work.
"Discrimination of virgin olive oils with different geographical origin: a rapid untargeted chromatographic approach based on volatile compounds"
Creators: name: Palagano, Rosa
name: Valli, Enrico
name: Cevoli, Chiara
name: Bendini, Alessandra
name: Toschi, Tullia Gallina
Publisher: name: arXiv
Year: 2020
Subjects: subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Biological sciences

description: Many studies have shown that the geographic origin is one of the most influencing factors in the choice of olive oil. To avoid misleading, European regulation has established specific rules to report the geographical origin of extra virgin and virgin olive oils on the product label, but an official analytical procedure to verify this information has not been yet defined. In this work, a flash gas chromatography untargeted approach for determination of volatile compounds, followed by a chemometric data elaboration, is proposed for discrimination of EVOOs and VOOs according to their geographical origin (EU and Extra-EU). A set of 210 samples was analyzed and two different classification techniques were used, one linear and one non-linear. The two models were also validated using an external data set. Satisfactory results were obtained for both chemometric approaches: considering the PLS-DA, 89% and 81% of EU and Extra-EU samples, respectively, were correctly classified; for ANN the percentages were 93% and 89%, respectively. These results confirm the reliability of the method as a rapid approach to discriminate EVOOs and VOOs according to their geographical provenance.
Optical Rebrightening of Extragalactic Transients from the Zwicky Transient Facility
Creators: name: Soraisam, Monika
name: Matheson, Thomas
name: Lee, Chien-Hsiu
name: Saha, Abhijit
name: Narayan, Gautham
name: Wolf, Nicholas
name: Scott, Adam
name: Figuereo, Stephanie
name: Nunuez, Rafael
name: McKinnon, Kevin
name: Guhathakurta, Puragra
name: Brink, Thomas
name: Filippenko, Alexei
name: Smith, Nathan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Ongoing large-scale optical time-domain surveys, such as the Zwicky Transient Facility (ZTF), are producing alerts at unprecedented rates. Analysis of transient sources has so far followed two distinct paths: archival analysis of data on transient sources at a time when they are no longer observable and real-time analysis at the time when the sources are first detected. The latter is the realm of alert brokers such as the Arizona-NOIRLab Temporal Analysis and Response to Events System (ANTARES). In this paper, we synthesize the two analysis paths and present a first systematic study of archival alert-broker data, focusing on extragalactic transients with multipeaked light curves identified in the ANTARES archive of ZTF alerts. Our analysis yields a sample of 37 such sources, including core-collapse supernovae (with two analogs of iPTF14hls), thermonuclear supernovae interacting with their surrounding circumstellar medium, tidal disruption events, luminous blue variables, and as yet unclassified objects. A large fraction of the identified sources is currently active, warranting allocation of follow-up resources in the immediate future to further constrain their nature and the physical processes at work.
description: Accepted for publication in ApJ Letters
Excitations of Atomic Vibrations in Amorphous Solids
Creators: name: Wan, Li
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study excitations of atomic vibrations in the reciprocal space for amorphous solids. There are two kinds of excitations we obtained, collective excitation and local excitation. The collective excitation is the collective vibration of atoms in the amorphous solids while the local excitation is stimulated locally by a single atom vibrating in the solids. We introduce a continuous wave vector for the study and transform the equations of atomic vibrations from the real space to the reciprocal space. We take the amorphous silicon as an example and calculate the structures of the excitations in the reciprocal space. Results show that an excitation is a wave packet composed of a collection of plane waves. We also find a periodical structure in the reciprocal space for the collective excitation with longitudinal vibrations, which is originated from the local order of the structure in the real space of the amorphous solid.
description: 10 pages
Rethinking the N(H2)/I(CO) Conversion Factor
Creators: name: Wall, W. F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An improved formulation for the X-factor is proposed. The statement that the velocity-integrated radiation temperature of the $\COone$ line, $I(\CO)$, ``counts'' optically thick clumps is quantified using the formalism of \citet{Martin84} for line emission in a clumpy cloud. Adopting the simplifying assumptions of thermalized $\COone$ line emission and isothermal gas, an effective optical depth, $\tef$, is defined as the product of the clump filling factor within each velocity interval and the clump effective optical depth as a function of the optical depth on the clump's central sightline, $τ_0$. The clump effective optical depth is well approximated as a power law in $τ_0$ with power-law index, $ε$, referred to here as the clump ``fluffiness,'' and has values between zero and unity. While the $\COone$ line is optically thick within each clump (i.e., high $τ_0$), it is optically thin ``to the clumps'' (i.e., low $\tef$). Thus the dependence of $I(CO)$ on $\tef$ is linear, resulting in an X-factor that depends only on clump properties and {\it not} directly on the entire cloud. Assuming virialization of the clumps yields an expression for the X-factor whose dependence on physical parameters like density and temperature is ``softened'' by power-law indices of less than unity that depend on the fluffiness parameter, $ε$. The X-factor provides estimates of gas column density because each sightline within the beam has optically thin gas within certain narrow velocity ranges. Determining column density from the optically thin gas is straightforward and parameters like $ε$ then allow extrapolation of the column density of the optically thin gas to that of all the gas.
description: A very short and incomplete version of this appears in RMAA, 42, 117. Given that is a first draft, comments are appreciated. This first draft was updated - I removed an unnecessary warning on the first page. In the third revision I fixed some typos and beefed up the motivation: This is the first major improvement in understanding the X-factor since the '80s because it includes radiative transfer ... etc The fourth version is the same as the third version but I accidentally left an unnecessary warning in that version. The fourth version is free of that
A selector for structural isomers of neutral molecules
Creators: name: Filsinger, Frank
name: Erlekam, Undine
name: von Helden, Gert
name: Küpper, Jochen
name: Meijer, Gerard
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We have selected and spatially separated the two conformers of 3-aminophenol (C$_6$H$_7$NO) present in a molecular beam. Analogous to the separation of ions based on their mass-to-charge ratios in a quadrupole mass filter, the neutral conformers are separated based on their different mass-to-dipole-moment ratios in an ac electric quadrupole selector. For a given ac frequency, the individual conformers experience different focusing forces, resulting in different transmissions through the selector. These experiments demonstrate that conformer-selected samples of large molecules can be prepared, offering new possibilities for the study of gas-phase biomolecules.
description: 4 pages, 4 figures (Revtex)
Convergence Analysis of Projection Method for Variational Inequalities
Creators: name: Shehu, Yekini
name: Iyiola, Olaniyi. S.
name: Li, Xiao-Huan
name: Dong, Qiao-Li
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47H05, 47J20, 47J25, 65K15, 90C25

description: The main contributions of this paper are the proposition and the convergence analysis of a class of inertial projection-type algorithm for solving variational inequality problems in real Hilbert spaces where the underline operator is monotone and uniformly continuous. We carry out a unified analysis of the proposed method under very mild assumptions. In particular, weak convergence of the generated sequence is established and nonasymptotic $O(1/n)$ rate of convergence is established, where $n$ denotes the iteration counter. We also present some experimental results to illustrate the profits gained by introducing the inertial extrapolation steps.
description: 24 pages, 5 figures. arXiv admin note: substantial text overlap with arXiv:2101.08057
Identifying EU-listed invaisve species by DNA barcodign using currently available sequence data
Creators: name: Vanderheyden, Ann
name: Smitz, Nathalie
name: Vanden Abeele, Samuel
name: Kratz, Fanny
name: Breugelmans, Karin
name: Segers, Brigitte
name: De Meyer, Marc
name: Backeljau, Thierry
Publisher: name: Zenodo
Year: 2024
Subjects: DNA identification
DNA Barcoding
Factsheets
Invasive alien species

description: Introduction: The introduction of invasive alien species (IAS) can lead to detrimental effects on ecosystems, whether introduced accidentally or intentionally. Preventing the establishment and spread of IAS is crucial due to their disruptive nature and difficulty to eradicate. Early detection and accurate identification are essential for effective management. However, morphology-based identifications are not always feasible, especially for cryptic species or trace materials (hair, feces). Thus, BopCo (Barcoding Facility for Organisms and Tissues of Policy Concern) investigated the utility of DNA sequences for identifying species encompassed in the European Regulation on IAS.

 

Methods: BopCo evaluated online genetic reference databases used to identify the 68 species listed. Factsheets were produced for each species, detailing taxonomy, current distribution in Europe, and a discussion on the use of publicly available DNA sequence data for its identification. Recommendations were provided on suitable DNA markers for IAS identification as well. An overview was compiled to assess data coverage, identify encountered issues, and evaluate the reliability of DNA-based identifications.

 

Results: The investigation yielded concise factsheets for each of the 68 species, offering insights into taxonomy, distribution, and the use of DNA sequence data for identification. Recommendations were provided regarding suitable DNA markers for IAS identification. The assessment revealed challenges such as insufficient sequence data and erroneous taxonomic assignments, impacting the reliability of identifications.

 

Conclusions: BopCo's evaluation underscores the potential of DNA sequences for identifying IAS listed in the European Regulation. However, challenges such as limited sequence data and taxonomic errors highlight the need for improved data coverage and accuracy. Recommendations for enhancing the reliability of DNA-based identifications are crucial for effective IAS management.
Evolution of the symmetry energy of hot neutron-rich matter formed in heavy-ion reactions
Creators: name: Li, Bao-An
name: Chen, Lie-Wen
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: It is shown that the experimentally observed decrease of the nuclear symmetry energy with the increasing centrality or the excitation energy in isotopic scaling analyses of heavy-ion reactions can be well understood analytically within a degenerate Fermi gas model. The evolution of the symmetry energy is found to be mainly due to the variation in the freeze-out density rather than temperature. The isoscaling analyses are useful for probing the interaction part of the nuclear symmetry energy, provided that both the freeze-out temperature and density of the fragments can be inferred simultaneously from the experiments.
description: 6 pages, 2 figures. Title changed little, comments on extracting the symmetry energy from the isoscaling phenomenon are added. Revised version to appear in PRC
Physical origin of X-ray flares following GRBs
Creators: name: Zhang, Bing
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: One of the major achievements of Swift is the discovery of the erratic X-ray flares harboring nearly half of gamma-ray bursts (GRBs), both for long-duration and short-duration categories, and both for traditional hard GRBs and soft X-ray flashes (XRFs). Here I review the arguments in support of the suggestion that they are powered by reactivation of the GRB central engine, and that the emission site is typically ``internal'', i.e. at a distance within the forward shock front. The curvature effect that characterizes the decaying lightcurve slope during the fading phase of the flares provides an important clue. I will then discuss several suggestions to re-start the GRB central engine and comment on how future observations may help to unveil the physical origin of X-ray flares.
description: 6 pages, 2 figure, uses aipproc.cls; to appear in ``16th Annual October Astrophysics Conference in Maryland", eds. S. Holt, N. Gehrels and J. Nousek, AIP Conf.Procs
A generalized line tension model for precipitate strengthening in metallic alloys
Creators: name: Santos-Güemes, R.
name: Segurado, J.
name: LLorca, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A generalized line tension model has been developed to estimate the critical resolved shear stress in precipitation hardened alloys. The model is based in previous line tension models for regular arrays of either impenetrable or shearable spherical precipitates that were expanded to take into account the effect of the elastic mismatch between the matrix and the precipitates. The model parameters are calibrated from dislocation dynamics simulations that covered a wide range of precipitate diameters and spacing as well as of the mismatch in elastic constants. This model is extended to deal with random arrays of monodisperse spherical precipitates by changing the geometrical parameters of the model by the averaged ones corresponding to the random distributions. The model predictions were in good agreement with the critical resolved shear stresses obtained from dislocation dynamics simulations of random spherical precipitates distributions for both impenetrable and shearable precipitates, providing a fast and accurate tool to predict precipitate strengthening in metallic alloys.
title: Access Management Implementation in Kentucky
title: Technical Support Document and Status Report
titleType: Subtitle
Creators: name: House, Barry
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2008
Subjects: subject: Transportation Engineering

description: This report describes the efforts of the Kentucky Transportation Cabinet’s Access Management Implementation Task Force. The task force was established in May 2004 and was charged with the responsibility of reviewing and refining the recommendations in the Access Management for Kentucky research study for the purpose of implementing a comprehensive access management program for the state of Kentucky. The Kentucky Transportation Center provided technical and administrative support to the task force. This report provides documentation of the information considered by the task force, the deliberations over that information, and the decisions and recommendations made by the task force. Although a decision was made to suspend task force initiatives prior to full-scale implementation of a formal program, the information contained in this report should prove to be a valuable resource for a resumption of implementation efforts when conditions are deemed to be appropriate.
D-branes, Wilson Bags, and Coherent Topological Charge Structure in QCD
Creators: name: Thacker, H. B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Monte Carlo studies of pure glue SU(3) gauge theory using the overlap-based topological charge operator have revealed a laminar structure in the QCD vacuum consisting of extended, thin, coherent, locally 3-dimensional sheets of topological charge embedded in 4D space, with opposite sign sheets interleaved. Studies of localization properties of Dirac eigenmodes have also shown evidence for the delocalization of low-lying modes on effectively 3-dimensional surfaces. In this talk, I review some theoretical ideas which suggest the possibility of 3-dimensionally coherent topological charge structure in 4-dimensional gauge theory and provide a possible interpretation of the observed structure. I begin with Luscher's ``Wilson bag'' integral over the 3-index Chern-Simons tensor. The analogy with a Wilson loop as a charged world line in 2-dimensional $CP^{N-1}$ sigma models suggests that the Wilson bag surface represents the world volume of a physical membrane. The large-N chiral Lagrangian arguments of Witten also indicate the existence of multiple ``k-vacuum'' states with discontinuous transitions between k-vacua at $θ=$ odd multiples of $π$. The domain walls between these vacua have the properties of a Wilson bag surface. Finally, I review the AdS/CFT duality view of $θ$ dependence in QCD. The dual realtionship between topological charge in gauge theory and Ramond-Ramond charge in type IIA string theory suggests that the coherent topological charge sheets observed on the lattice are the holographic image of wrapped D6 branes.
description: 15 pages, 3 figures. Talk presented at Lattice 2006, Tucson, AZ, July 23-27, 2006