cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rayleigh-Brillouin scattering of carbon dioxide
Creators: name: Gu, Ziyu
name: Ubachs, Wim
name: van de Water, Willem
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The spectral lineshape of spontaneous Rayleigh-Brillouin scattering in CO2 is studied in a range of pressures. The spectrum is influenced by the bulk viscosity, which is a relaxation phenomenon involving the internal degrees of freedom of the molecule. The associated relaxation rates can be compared to the frequency shift of the scattered light, which demands precise measurements of the spectral lineshape. We find the value of the bulk viscosity around 5.7 X 10^{-6} kg/(ms) for the range of pressures p= 2-4 bar and for conditions of room temperature.
Model pseudofermionic systems: connections with exceptional points
Creators: name: Bagarello, F.
name: Gargano, F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We discuss the role of pseudo-fermions in the analysis of some two-dimensional models, recently introduced in connection with non self-adjoint hamiltonians. Among other aspects, we discuss the appearance of exceptional points in connection with the validity of the extended anti-commutation rules which define the pseudo-fermionic structure.
description: in press in Phys. Rev. A
Lessons from a Large-Scale Assessment: Results from Conceptual Inventories
Creators: name: Thacker, Beth
name: Dulli, Hani
name: Pattillo, Dave
name: West, Keith
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: We report the conceptual inventory results of a large-scale assessment project at a large university. We studied an attempt at introducing materials and instructional methods informed by physics education research (PER-informed materials) into a department where most instruction has been traditional and a significant number of faculty are hesitant, ambivalent or even resistant about the introduction of such reforms. The changes were made in the laboratories and recitation sections of the introductory classes, both calculus-based and algebra-based, introducing PER-informed materials and training the teaching assistants in student-centered instructional methods. In addition to the results found in the large lecture classes, we present the results of a small PER-informed, inquiry-based, laboratory-based class that has been taught as a special section of the algebra-based course for about 10 years. The assessment reported in this paper was done using available PER-developed assessment instruments. The results of other assessment instruments used in the project, such as free-response pre- and post-tests, are reported in subsequent papers. The results in this paper inform researchers in PER of the use of PER-informed materials and instructional methods in a department not unified in the introduction and implementation of these materials and the results of the implementation as assessed by PER-based conceptual inventories. We found that our conceptual inventory scores were lower than many results reported elsewhere in the literature. However, we did see a statistically significant increase in the conceptual inventory scores with the implementation of PER-informed laboratories and the use of student-centered pedagogy in the labs and recitations. The increase was much greater, if the lecture instructor also used PER-informed materials.
Generalized fractional operators for nonstandard Lagrangians
Creators: name: Taverna, Giorgio S.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 26A33, 49K05, 70H05

description: In this note we study the application of generalized fractional operators to a particular class of nonstandard Lagrangians. These are typical of dissipative systems and the corresponding Euler-Lagrange and Hamilton equations are analyzed. The dependence of the equation of motion on the generalized kernel permits to obtain a wide range of different configurations of motion. Some examples are discussed and analyzed.
description: This is a preprint of a paper whose final and definite form will appear in Mathematical Methods in the Applied Sciences, ISSN 0170-4214. Paper submitted 31/Jan/2014; revised 23/Apr/2014; accepted for publication 25/Apr/2014
Coarse-grained modeling of protein unspecifically bound to DNA
Creators: name: Guardiani, Carlo
name: Cencini, Massimo
name: Cecconi, Fabio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biomolecules (q-bio.BM)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: There is now a certain consensus that Transcription Factors (TFs) reach their target sites, where they regulate gene transcription, via a mechanism dubbed facilitated diffusion (FD). In FD, the TF cycles between events of 3D-diffusion in solution (jumps), 1D-diffusion along DNA (sliding), and small jumps (hopping) achieving association rates higher than for 3D-diffusion only. We investigate the FD phenomenology through Molecular Dynamics simulations in the framework of coarse-grained modeling. Despite the crude approximations, we show that the model generates, upon varying equilibrium distance of the DNA-TF interaction, a phenomenology matching a number of experimental and numerical results obtained with more refined models. In particular, by focusing on the kinematics of the process, we characterize the geometrical properties of TF trajectories during sliding. We find that sliding occurs via helical paths around the DNA helix leading to a coupling of translation along the DNA-axis with rotation around it. The 1D-diffusion constant measured in simulations is found to be interwoven with the geometrical properties of sliding and we develop a simple argument able to quantitatively reproduce the measured values.
description: LaTeX, 20 pages, 8 eps figures
Kinetic and energetic constraints on electron transfer in photosystem II
Creators: name: Gates, Colin
Publisher: name: No Publisher Supplied
Year: 2018

description: The enzyme supercomplex Photosystem II (PSII) is the sole water oxidase known to have developed in nature.  Accordingly, it is the source of almost all biologically useful reductant present in the biosphere, as well as the molecular oxygen in Earth’s atmosphere.  Understanding this massive, complex protein is thus crucial to development of novel bioinspired water-oxidizing catalysts, a crucial step toward reducing dependence on fossil fuels, which are also ultimately products of PSII activity.  Improving understanding and control of the operation and regulation of PSII is also critical for development of agriculture, biofuels, and bioproducts.As the active domains of PSII are highly conserved, substitution of functional and tuning components of the complex and investigation of alterations to functionality represents a well-proven method for study of this complex.  However, the development of a range of novel techniques for phenomenological investigation of PSII has allowed for the observation of previously unknown processes and functionalities associated with certain components of PSII.  The use of exogenous quinones to remove the kinetic constraint of electron removal from the acceptor side of PSII allows a more accurate determination of the first electron transfer steps within PSII, removing a major confounding variable from kinetic studies of processes within the enzyme.  Expansion of fluorometric and oximetric techniques allows processes to be probed under conditions previously inaccessible due to the need to generate specific and often unnatural sample conditions.  With these new developments, cofactor substitutions are employed to clarify the functionality of the native cofactors.
Herbert Stahl's proof of the BMV conjecture
Creators: name: Eremenko, Alexandre
Publisher: name: arXiv
Year: 2013
Subjects: subject: Spectral Theory (math.SP)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 47A55, 30F10

description: The paper contains a simplified version of Stahl's proof of a conjecture of Bessis, Moussa and Villani on the trace of matrices A+tB with Hermitean A and B.
description: 7 pages
Charged Current Quasi-Elastic Cross Section Measurements in MiniBooNE
Creators: name: Grange, Joseph
name: Katori, Teppei
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The neutrino-induced charged-current quasi-elastic (CCQE, $ν_l+n\to l^-+p$ or $\barν_l+p\to l^++n$) interaction is the most abundant interaction around 1 GeV, and it is the most fundamental channel to study neutrino oscillations. Recently, MiniBooNE published both muon neutrino and muon anti-neutrino double differential cross sections on carbon. In this review, we describe the details of these analyses and include some historical remarks.
description: Preprint of an article submitted for consideration in Modern Physics Letter A \c{opyright} 2014 [copyright World Scientific Publishing Company] http://www.worldscinet.com/mpla
Physics for the sake of security, security for the sake of physics
Creators: name: Garcia, Luis
Publisher: name: No Publisher Supplied
Year: 2018

description: In the current cyberwarfare climate, industrial control systems (ICS) are increas-ingly becoming focal points of security research as they interconnect, monitor, andcontrol safety-critical processes. ICS comprise a class of cyber-physical systems (CPS)across a wide range of domains, including but not limited to the electric power grid,factory automation, biomedical applications, as well as nuclear reactors. As the inter-connectivity and accessibility of ICS system components expands, the attack surface forsuch systems expands as well. Because these ICS control safety-critical physical pro-cesses, there is a need for security solutions that have the physical dynamics integratedinto the design process in order to ensure safe operation.This thesis investigates the security and verification of ICS at different levels ofabstraction. The goal is to bridge the gap between practical security analyses andsound theoretical approaches to verifying cyber-physical systems. In particular, wepropose to not only leverage the physical properties of an ICS for security purposes,but to also provide fine-grained hybrid systems modelling of embedded cyber-physicalsystems such as a programmable logic controllers (PLCs).First, this thesis introduces novel and practical security and verification solutions forICS that leverage the cyber-physical interdependences between the cyber componentsand the underlying physical system. This thesis then explores the feasibility of utilizingformal methods in the context of complex ICS control processes. Finally, this thesisintroduces a balanced approach to cyber-physical intrusion detection that enforces con-trol behavioral integrity of a distributed ICS by integrating physical state-estimationinto control-flow monitoring of the associated software.
A new approach to assess arterial system function with compliance-pressure loop
Creators: name: Ge, Yueya
Publisher: name: No Publisher Supplied
Year: 2018

description: High blood pressure has been recognized as a most common risk factor of cardiovascular diseases, which is the leading cause of death. There is a strong correlation of blood pressure(P) and mechanical properties of arteries, as characterized by vascular compliance, peripheral resistance and characteristic impedance.  For this reason, an accurate estimation of these parameters is necessary for better interpretation of arterial system function and hypertension.The classic Windkessel model is one of the most popular tools in the clinical setting to describe arterial system function. This model assumes a constant arterial compliance(C) throughout the entire cardiac cycle, although it has been known that compliance is a function of pressure.  A recently modified Windkessel, also known as Li model, which incorporates a pressure-dependent nonlinear compliance(C(P)) component has shown that arterial compliance is varying along time, i.e. not a constant value.In this thesis, simultaneously measured aortic pressure and flow data were gathered during normal, hypertension and vasodilator conditions. The accuracy of the nonlinear C(P) model predicted waveforms is first established. This is followed by the use of a new compliance-pressure loop (CPL) approach to evaluate arterial system function under varied vasoactive conditions over a wide range of pressure. Results show CPL can provide a rapid visualization of arterial system function and that reduced compliance due to hypertension and improved compliance due to vasodilator can be readily quantified. This CPL method thus can be further applied to the assessment of severity of hypertension and clinical assessment of drug efficacy.
Location privacy
Creators: name: Gao, Xianyi
Publisher: name: No Publisher Supplied
Year: 2018

description: Advances in technology have provided ways to measure driving behavior. Recently, this technology has been applied to usage-based automotive insurance. Policy holders may opt-in to monitoring for the hope of reduced insurance premiums. Although some of these monitoring devices are based upon GPS information and offer no location privacy protections, several companies are aware of the privacy concerns and therefore measure only speed data. However, does collecting the speed data really preserve privacy? Our work investigates how much location information we can actually obtain from the speed data and why the speed data should also be protected against malicious third parties. In this thesis, we present our algorithm to track drivers’ locations when only speed data and starting locations are known. The starting locations are mostly home addresses that insurance companies know. The algorithm fits the speed data to a trajectory path on a map and evaluates which path should be the actual driving route. To demonstrate the algorithm’s real-world applicability, we evaluated its performance with driving datasets from New Jersey and Seattle, Washington, representing suburban and urban areas.We present the Elastic Pathing algorithm to track drivers, the enhanced version of Elastic Pathing algorithm with several optimizations, and a final machine learning approach by learning how a speed pattern can indicate the driving direction. Our Elastic Pathing algorithm can estimate destinations with error within 250 meters for 17% traces and within 500 meters for 24% traces in the New Jersey dataset (254 traces). For the Seattle dataset (691 traces), we similarly estimated destinations with error within 250 and 500 meters for 16% and 28% of the traces respectively. At the end, based on the challenge from previous approach, we designed and implemented the machine learning approach for the current NewJersey dataset in order to achieve higher accuracy. With machine learning, our algorithm was able to estimate destinations with error within 250 and 500 meters for 25% and 30% of traces respectively in our New Jersey dataset. This work shows that speed data enable a substantial breach of privacy.
Accurate Teff and [M/H] determinations for the CARMENES M dwarfs from deep transfer learning
Creators: name: Bello-García, Antonio
name: Ordieres-Meré, Joaquín
name: Passegger, Vera Maria
name: Caballero, José Antonio
name: Schweitzer, Andreas
name: González-Marcos, Ana
Publisher: name: Zenodo
Year: 2022
Subjects: methods: data analysis
techniques: spectroscopic
stars: fundamental parameters
stars: late-type
stars: low-mass

description: Accurate Teff and [M/H] determinations for the CARMENES M dwarfs from deep transfer learning We present a new technique for deriving photospheric stellar parameters of M dwarfs with high accuracy,
 the so-called transfer learning. There, information from one domain is being transferred to improve the
 accuracy of a neural network model in another domain. We demonstrate the feasibility of the deep transfer learning approach applied to M-dwarf high-resolution
 spectra from the CARMENES survey. In order to do so, we use 14 stars of the CARMENES sample with interferometric
 angular diameters to calculate the effective temperature, as well as six M dwarfs being common proper-motion
 companions to FGK-type primaries with known metallicity. After we train a deep learning neural network model on synthetic PHOENIX-ACES spectra, we use the internal
 feature representations together with those 14+6 independently labeled stars as a new input for the transfer process. We compare the derived stellar parameters of a small sample of M dwarfs kept out of the training phase
 with results from other methods. We demonstrate that deep transfer learning provides a higher accuracy
 than our previous deep learning method, indicating that it is a robust tool for obtaining M-dwarf
 stellar parameters when measured against samples from independent estimations for well known stars.
description: {"references": ["Boyajian T. S., McAlister H. A., Baines E. K. et al. 2008 ApJ 683 424", "Boyajian, T. S., von Braun, K., van Belle, G., et al. 2012, ApJ, 757, 112", "Bressan, A., Marigo, P., Girardi, L., et al. 2012, MNRAS, 427, 127", "Husser, T.-O., Wende-von Berg, S., Dreizler, S., et al. 2013, A&A, 553, A6", "Marfil, E., Tabernero, H. M., Montes, D., et al. 2021, A&A, 656, A162", "Montes, D., Gonz\u00e1lez-Peinado, R., Tabernero, H. M., et al. 2018, MNRAS, 479, 1332", "Passegger, V. M., Bello-Garc\u00eda, A., Ordieres-Mer\u00e9, J., et al. 2020, A&A, 642, A22", "Passegger, V. M., Bello-Garc\u00eda, A., Ordieres-Mer\u00e9, J., et al. 2022, A&A, 658, A194", "von Braun, K., Boyajian, T. S., van Belle, G. T., et al. 2014, MNRAS, 438, 2413"]}
Bent-Tailed Radio Sources in the Australia Telescope Large Area Survey of the Chandra Deep Field-South
Creators: name: Dehghan, Siamak
name: Johnston-Hollitt, Melanie
name: Franzen, Thomas M. O.
name: Norris, Ray P.
name: Miller, Neal A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using the 1.4 GHz Australia Telescope Large Area Survey (ATLAS), supplemented with the 1.4 GHz Very Large Array images, we undertook a search for bent-tailed (BT) radio galaxies in the Chandra Deep Field-South (CDFS). Here we present a catalog of 56 detections, which include 45 bent-tailed sources, four diffuse low-surface-brightness objects (one relic, two halos, and one unclassified object), and a further seven complex, multi-component sources. We report BT sources with rest-frame powers in the range $10^{22} \leq$ $\textrm{P}_{1.4 \textrm{ GHz}} \leq 10^{26}$ W Hz$^{-1}$, redshifts up to 2 and linear extents from tens of kpc up to about one Mpc. This is the first systematic study of such sources down to such low powers and high redshifts and demonstrates the complementary nature of searches in deep, limited area surveys as compared to shallower, large surveys. Of the sources presented here one is the most distant bent-tailed source yet detected at a redshift of 2.1688. Two of the sources are found to be associated with known clusters: a wide-angle tail source in Abell 3141 and a putative radio relic which appears at the infall region between the galaxy group MZ 00108 and the galaxy cluster AMPCC 40. Further observations are required to confirm the relic detection, which if successful would demonstrate this to be the least powerful relic yet seen with $\textrm{P}_{1.4 \textrm{ GHz}} = 9 \times 10^{22}$ W Hz$^{-1}$. Using these data we predict future 1.4 GHz all-sky surveys with a resolution of $\sim$ 10 arcseconds and sensitivity of 10 $μ$Jy will detect of the order of 560,000 extended low-surface-brightness radio sources of which 440,000 will have a bent-tailed morphology.
description: 12 pages, 5 figures, accepted for publication in AJ
Dynamic competition between spin density wave order and superconductivity in underdoped $Ba_{1-x}K_xFe_2As_2$
Creators: name: Yi, M.
name: Zhang, Y.
name: Liu, Z. -K.
name: Ding, X.
name: Chu, J. -H.
name: Kemper, A. F.
name: Plonka, N.
name: Moritz, B.
name: Hashimoto, M.
name: Mo, S. -K.
name: Hussain, Z.
name: Devereaux, T. P.
name: Fisher, I. R.
name: Wen, H. H.
name: Shen, Z. -X.
name: Lu, D. H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: An intriguing aspect of unconventional superconductivity is that it always appears in the vicinity of other competing phases, whose suppression brings the full emergence of superconductivity. In the iron-pnictides, these competing phases are marked by a tetragonal-to-orthorhombic structural transition and a collinear spin-density-wave (SDW) transition. There has been macroscopic evidence for competition between these phases and superconductivity as the magnitude of both the orthorhombicity and magnetic moment are suppressed in the superconducting state. Here, using angle-resolved photoemission spectroscopy on detwinned underdoped $Ba_{1-x}K_xFe_2As_2$, we observe a coexistence of both the SDW gap and superconducting gap in the same electronic structure. Furthermore, our data reveal that following the onset of superconductivity, the SDW gap decreases in magnitude and shifts in a direction consistent with a reduction of the orbital anisotropy. This observation provides direct spectroscopic evidence for the dynamic competition between superconductivity and both SDW and electronic nematic orders in these materials.
The role of information in a two-traders market
Creators: name: Bagarello, F.
name: Haven, E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computational Finance (q-fin.CP)
subject: FOS: Economics and business

description: In a very simple stock market, made by only two \emph{initially equivalent} traders, we discuss how the information can affect the performance of the traders. More in detail, we first consider how the portfolios of the traders evolve in time when the market is \emph{closed}. After that, we discuss two models in which an interaction with the outer world is allowed. We show that, in this case, the two traders behave differently, depending on \textbf{i)} the amount of information which they receive from outside; and \textbf{ii)}the quality of this information.
description: in press in Physica A
Optimal shape and location of sensors for parabolic equations with random initial data
Creators: name: Privat, Yannick
name: Trélat, Emmanuel
name: Zuazua, Enrique
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In this article, we consider parabolic equations on a bounded open connected subset $Ω$ of $\R^n$. We model and investigate the problem of optimal shape and location of the observation domain having a prescribed measure. This problem is motivated by the question of knowing how to shape and place sensors in some domain in order to maximize the quality of the observation: for instance, what is the optimal location and shape of a thermometer? We show that it is relevant to consider a spectral optimal design problem corresponding to an average of the classical observability inequality over random initial data, where the unknown ranges over the set of all possible measurable subsets of $Ω$ of fixed measure. We prove that, under appropriate sufficient spectral assumptions, this optimal design problem has a unique solution, depending only on a finite number of modes, and that the optimal domain is semi-analytic and thus has a finite number of connected components. This result is in strong contrast with hyperbolic conservative equations (wave and Schrödinger) studied in [56] for which relaxation does occur. We also provide examples of applications to anomalous diffusion or to the Stokes equations. In the case where the underlying operator is any positive (possible fractional) power of the negative of the Dirichlet-Laplacian, we show that, surprisingly enough, the complexity of the optimal domain may strongly depend on both the geometry of the domain and on the positive power. The results are illustrated with several numerical simulations.
Enhancing Open Research Infrastructure in the Arab Region: Overcoming Challenges and Expanding Access to Persistent Identifiers
Creators: name: Mostafa, Mohamad
name: Al-Zoubi, Raed
Publisher: name: Zenodo
Year: 2024
Subjects: Arab World
DOI
Open Research
PID
Metadata
DataCiteGAP
Research and Education Networks
Open Science
MENA
Open Research Infrastructure

description: DataCite is committed to supporting open research infrastructure and expanding access to our Persistent Identifier (PID) services globally through our Global Access Program (GAP). In regions like the Arab world, several challenges impede PID adoption, including a lack of awareness about the benefits of integrating PIDs in research workflows, technical gaps, and inadequate repository infrastructure. Financial constraints also hinder progress in some communities. DataCite is building a platform of collaboration and partnerships with leading organizations in GAP regions. One example is the collaboration with the Arab States Research and Education Network (ASREN), which aims to raise awareness about open science practices and enhance the role of regional Research and Education Networks (RENs) across the Arab world. Together, ASREN and DataCite are raising awareness in the region about persistent identifiers through various outreach activities and open research infrastructure, exploring ways to provide institutions in the region with better access to DataCite's PID infrastructure. This collaboration fosters a more integrated and efficient research environment. These collaborative efforts are crucial for building a robust community of practice in the Middle East and North Africa (MENA) region.This session was delivered at the NISO Plus 2024 Global/Online Conference, held virtually on September 17-18, 2024, by the National Information Standards Organization.
A quantum information approach to statistical mechanics
Creators: name: Cuevas, Gemma De las
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We review some connections between quantum information and statistical mechanics. We focus on three sets of results for classical spin models. First, we show that the partition function of all classical spin models (including models in different dimensions, different types of many-body interactions, different symmetries, etc) can be mapped to the partition function of a single model. Second, we give efficient quantum algorithms to estimate the partition function of various classical spin models, such as the Ising or the Potts model. The proofs of these two results are based on a mapping from partition functions to quantum states and to quantum circuits, respectively. Finally, we show how classical spin models can be used to describe certain fluctuating lattices appearing in models of discrete quantum gravity.
description: 9 pages, 9 figures
Neutrino Physics in 2020
Creators: name: Goodman, Maury
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Many talks at the 16th Lomonosov Conference, dedicated to Bruno Pontecorvo, detail the remarkable progress in neutrino physics over the last two decades. In this paper, I give an opinionated, and therefore likely inaccurate, review of the future, with some opinions on how both the physics situation and future facilities will develop, focusing on the year 2020.
description: Submitted to the Proceedings of the 16th Lomonosov Conference, Moscow Russia, August 2013
Farmer's Way to Change Based on Creative Economy: Case Study of Lohdon Nonna Cafe in Nadoon District, Mahasarakham Province
Creators: name: Kittipakorn Omthuan
name: Rossukon Omthuan
name: Chomnat Plangmal
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Farmer's way
change
creative economy

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 2, no. 161-169
Classical to Contemporary Theories of Learning
Creators: name: Gunniga Phansri
name: Chaiporn Pongpisanrat
name: Dussadee Lebkhao
name: Bovornpot Choompunuch
name: Phamornpun Yurayat
name: Pull Kaewampai
name: Rungson Chomeya
name: Lakkana Sariwat
name: Wipanee Suk-Erb
name: Supachai Tuklang
name: Sombat Tayraukham
name: Sukirin Amadbundit
name: Araya Piyakun
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Educational psychology
psychological theory
educational philosophy
cognitivescience

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 2, no. 170-185
A source of polarization-entangled photon pairs interfacing quantum memories with telecom photons
Creators: name: Clausen, Christoph
name: Bussieres, Felix
name: Tiranov, Alexey
name: Herrmann, Harald
name: Silberhorn, Christine
name: Sohler, Wolfgang
name: Afzelius, Mikael
name: Gisin, Nicolas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a source of polarization-entangled photon pairs suitable for the implementation of long-distance quantum communication protocols using quantum memories. Photon pairs with wavelengths 883 nm and 1338 nm are produced by coherently pumping two periodically poled nonlinear waveguides embedded in the arms of a polarization interferometer. Subsequent spectral filtering reduces the bandwidth of the photons to 240 MHz. The bandwidth is well-matched to a quantum memory based on an Nd:YSO crystal, to which, in addition, the center frequency of the 883 nm photons is actively stabilized. A theoretical model that includes the effect of the filtering is presented and accurately fits the measured correlation functions of the generated photons. The model can also be used as a way to properly assess the properties of the source. The quality of the entanglement is revealed by a visibility of V = 96.1(9)% in a Bell-type experiment and through the violation of a Bell inequality.
description: 15 pages, 8 figures, 3 tables
Basic Science Process Skills of 5th Grade Students of Phoncharoen District School Cluster, Buengkan Province
Creators: name: Jaroonlak Khamreaun
name: Apantree Pulputha
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Science process skills
basic
5th grade students

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 2, no. 186-198
Decay of the rotary echoes for the spin of a nitrogen-vacancy center in diamond
Creators: name: Mkhitaryan, V. V.
name: Dobrovitski, V. V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study dynamics of the electron spin of a nitrogen-vacancy (NV) center subjected to a strong driving field with periodically reversed direction (train of rotary echoes). We use analytical and numerical tools to analyze in detail the form and timescales of decay of the rotary echo train, modeling the decohering spin environment as a random magnetic field. We demonstrate that the problem can be exactly mapped onto a model of spin 1 coupled to a single bosonic mode with imaginary frequency. This mapping allows comprehensive analytical investigation beyond the standard Bloch-Redfield-type approaches. We explore the decay of the rotary echo train under assumption of strong driving, and identify the most important regimes of the decay. The analytical results are compared with the direct numerical simulations to confirm quantitative accuracy of our study. We present the results for realistic environment of substitutional nitrogen atoms (P1 centers), and provide a simplified but accurate description for decay of the rotary echo train of the NV center's spin. The approach presented here can also be used to study decoherence and longitudinal relaxation of other spin systems under conditions of strong driving.
description: 22 pages, 6 figures
Bericht der Gesellschaft der Freunde und Mitarbeiter des Staatlichen Museums für Naturkunde in Stuttgart, e.V., für 1969/70, mit Mitgliederverzeichnis
Creators: name: Unkn
Publisher: name: unkn
Year: 2020

description: Jahreshefte der Gesellschaft für Naturkunde in Württemberg
description: Bd. 125, 1970
Effect of external pressure on the magnetic properties of $R$CoAsO ($R$ = La, Pr, Sm): a $μ$SR study
Creators: name: Prando, G.
name: Sanna, S.
name: Khasanov, R.
name: Pal, A.
name: Brüning, E. M.
name: Mazzani, M.
name: Awana, V. P. S.
name: Büchner, B.
name: De Renzi, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on a detailed investigation of the itinerant ferromagnets LaCoAsO, PrCoAsO and SmCoAsO performed by means of muon spin spectroscopy upon the application of external hydrostatic pressures $p$ up to $2.4$ GPa. These materials are shown to be magnetically hard in view of the weak dependence of both critical temperatures $T_{C}$ and internal fields at the muon site on $p$. In the cases $R$ = La and Sm, the behaviour of the internal field is substantially unaltered up to $p = 2.4$ GPa. A much richer phenomenology is detected in PrCoAsO instead, possibly associated with a strong $p$ dependence of the statistical population of the two different crystallographic sites for the muon. Surprisingly, results are notably different from what is observed in the case of the isostructural compounds $R$CoPO, where the full As/P substitution is already inducing a strong chemical pressure within the lattice but $p$ is still very effective in further affecting the magnetic properties.
description: 8 pages, 9 figures
Factors Affecting the Performance of Non-life Insurance Businesses in Thailand in the Period Before and During the Covid-19 Pandemic
Creators: name: Wanlop Lomtaku
name: Kamonphan Uaongwikkan
name: Natchaphon Panthawong
name: Jiraphorn Khrueamun
name: Nattanon Khonyaiban
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Performance of non-life insurance business
the covid-19 pandemic

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 2, no. 199-212
The bottomonium spectrum at finite temperature from $N_f=2+1$ lattice QCD
Creators: name: Aarts, Gert
name: Allton, Chris
name: Harris, Tim
name: Kim, Seyong
name: Lombardo, Maria Paola
name: Ryan, Sinéad M.
name: Skullerud, Jon-Ivar
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present results on the bottomonium spectrum at temperatures above and below the deconfinement crossover temperature, $T_c$, from dynamical lattice QCD simulations. The heavy quark is treated with a non-relativistic effective field theory on the lattice and serves as a probe of the hot medium. Ensembles with a finer spatial lattice spacing and a greater range of temperatures below $T_c$ than those previously employed by this collaboration are used. In addition, there are $N_f=2+1$ flavours of Wilson clover quark in the sea with $M_π\approx400$ MeV and we perform a more careful tuning of the bottom quark mass in this work. We calculate the spectral functions of S and P wave bottomonium states using the maximum entropy method and confirm earlier findings on the survival of the ground state S wave states up to at least $2T_c$ and the immediate dissociation of the P wave states above $T_c$.
description: 17 pages, 11 figures
Rheotaxis facilitates upstream navigation of mammalian sperm cells
Creators: name: Kantsler, Vasily
name: Dunkel, Jörn
name: Blayney, Martyn
name: Goldstein, Raymond E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: A major puzzle in biology is how mammalian sperm determine and maintain the correct swimming direction during the various phases of the sexual reproduction process. Whilst chemotaxis is assumed to dominate in the immediate vicinity of the ovum, it is unclear which biochemical or physical cues guide spermatozoa on their long journey towards the egg cell. Currently debated mechanisms range from peristaltic pumping to temperature sensing (thermotaxis) and direct response to fluid flow variations (rheotaxis), but little is known quantitatively about their relative importance. Here, we report the first quantitative experimental study of mammalian sperm rheotaxis. Using microfluidic devices, we investigate systematically the swimming behavior of human and bull sperm over the whole range of physiologically relevant shear rates and viscosities. Our measurements show that the interplay of fluid shear, steric surface-interactions and chirality of the flagellar beat leads to a stable upstream spiraling motion of sperm cells, thus providing a generic and robust rectification mechanism to support mammalian fertilisation. To rationalise these findings, we identify a minimal mathematical model that is capable of describing quantitatively the experimental observations. The combined experimental and theoretical evidence supports the hypothesis that the shape and beat patterns of mammalian sperm cells have evolved to optimally exploit rheotaxis for long-distance navigation.
description: 18 pages, 4 figures, supplementary information available at eLifesciences.org
Q-weak: First Direct Measurement of the Weak Charge of the Proton
Creators: name: Nuruzzaman
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The Q-weak experiment at Hall C of Thomas Jefferson National Accelerator Facility has made the first direct measurement of the weak charge of the proton, Qweak(p), through a precision measurement of the parity-violating asymmetry in elastic e-p scattering at low momentum transfer Q^2= 0.025 (GeV/c)^2 with incident electron beam energy of 1.155 GeV. The Q-weak experiment, along with earlier results of parity violating elastic scattering experiments, is expected to determine the most precise value of Qweak(p) which is suppressed in the Standard Model. If this result is further combined with the 133Cs atomic parity violation (APV) measurement, significant constraints on the weak charge of the up quark, down quark, and neutron can be extracted. This data will also be used to determine the weak-mixing angle, sin^2 theta_?W, with a relative uncertainty of < 0.5% that will provide a competitive measurement of the running of sin^2 theta_?W to low Q^2. An overview of the experiment and its results using the commissioning dataset, constituting approximately 4% of the data collected in the experiment, are reported here.
description: 8 pages, 4 figures, ICNFP 2013
Further perspective on the theory of heteronuclear decoupling
Creators: name: Skinner, Thomas E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An exact general theory of heteronuclear decoupling is presented for spin-1/2 IS systems. RF irradiation applied to the I spins decouples the S spins by reversing the sign of antiphase magnetization. A one-to-one correspondence is demonstrated between the sign of $2S_yI_z$ and the sense of the S-spin coupling evolution, with magnetization $S_x$ refocused when $\int 2S_yI_z\,dt = 0$. The exact instantaneous coupling at any time during the decoupling sequence is readily obtained in terms of the system states, showing that the creation of two-spin coherence is crucial for reducing the coupling, as required during the refocusing process. Representative examples from standard cyclic, periodic composite-pulse and adiabatic decoupling sequences illustrate the decoupling mechanism. More general aperiodic sequences, obtained using optimal control, realize the potential inherent in the theory for significantly improved decoupling. The recently derived equivalence between the dynamics of any N-level quantum system and a system of classical coupled harmonic oscillators provides additional insight into the mechanics of decoupling.
description: 9 pages, 4 figures
Displacement cascades and defects annealing in tungsten, Part I: defect database from molecular dynamics simulations
Creators: name: Setyawan, Wahyu
name: Nandipati, Giridhar
name: Roche, Kenneth J.
name: Heinisch, Howard L.
name: Wirth, Brian D.
name: Kurtz, Richard J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Molecular dynamics simulations have been used to generate a comprehensive database of surviving defects due to displacement cascades in bulk tungsten. Twenty one data points of primary knock-on atom (PKA) energies ranging from 100 eV (sub-threshold energy) to 100 keV ($\sim$780$\times E_d$, where $E_d$ is the average displacement threshold energy) have been completed at 300 K, 1025 K and 2050 K. Within this range of PKA energies, two regimes of power-law energy-dependence of the defect production are observed. A distinct power-law exponent characterizes the number of Frenkel pairs produced within each regime. The two regimes intersect at a transition energy which occurs at approximately 250$\times E_d$. The transition energy also marks the onset of the formation of large self-interstitial atom (SIAs) clusters (size 14 or more). The observed defect clustering behavior is asymmetric, with SIA clustering increasing with temperature, while the vacancy clustering decreases. This asymmetry increases with temperature such that at 2050 K ($\sim 0.5 T_m$) practically no large vacancy clusters are formed, meanwhile large SIA clusters appear in all simulations. The implication of such asymmetry on the long-term defect survival and damage accumulation is discussed. In addition, rare $${110} SIA loops are observed.
description: 10 pages, 6 figures
An Investigation of Communication Needs Experienced by Non-native Speakers of English as a Lingua Franca Academic Context
Creators: name: Tanaporn Khamwan
Publisher: name: Mahasarakham University
Year: 2023
Subjects: English as a lingua franca
communication needs
communication strategies

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 2, no. 213-226
Treatment patterns, healthcare resource utilization, and costs in Medicare patients with diffuse large B-cell lymphoma: A retrospective claims analysis (2015–2020)
Creators: name: Jun, Monika P.
name: Mutebi, Alex
name: Chhibber, Anindit
name: Liang, Chenxue
name: Keshishian, Allison
name: Wang, Anthony
name: Navarro, Fernando Rivas
name: Kalsekar, Anupama
name: He, Jing
name: Wang, Tongsheng
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Plant Biology
subject: Virology

description: To understand treatment patterns, healthcare resource utilization (HCRU), and economic burden of diffuse large B-cell lymphoma (DLBCL) in elderly adults in the US. This retrospective database analysis utilized US Centers for Medicare and Medicaid Services Medicare fee-for-service administrative claims data from 2015 to 2020 to describe DLBCL patient characteristics, treatment patterns, HCRU, and costs among patients aged ≥66 years. Patients were indexed at DLBCL diagnosis and required to have continuous enrollment from 12 months pre-index until 3 months post-index. HCRU and costs (USD 2022) are reported as per-patient per-month (PPPM) estimates. A total of 11,893 patients received ≥1-line (L) therapy; 1633 and 391 received ≥2L and ≥3L therapy, respectively. Median (Q1, Q3) age at 1L, 2L, and 3L initiation, respectively, was 76 (71, 81), 77 (72, 82), and 77 (72, 82) years. The most common therapy was R-CHOP (70.9%) for 1L and bendamustine ± rituximab for 2L (18.7%) and 3L (17.4%). CAR T was used by 14.8% of patients in 3L. Overall, 39.6% (1L), 42.1% (2L), and 47.8% (3L) of patients had all-cause hospitalizations. All-cause mean (median [Q1–Q3]) costs PPPM during each line were $22,060 ($20,121 [$16,676–$24,597]) in 1L, $30,027 ($20,868 [$13,416–$31,016]) in 2L, and $47,064 ($25,689 [$15,555–$44,149]) in 3L, with increasing costs driven primarily by inpatient expenses. Total all-cause 3L mean (median [Q1–Q3]) costs PPPM for patients with and without CAR T were $153,847 ($100,768 [$26,534–$253,630]) and $28,466 ($23,696 [$15,466–$39,107]), respectively. No clear standard of care exists in 3L therapy for older adults with relapsed/refractory DLBCL. The economic burden of DLBCL intensifies with each progressing line of therapy, thus underscoring the need for additional therapeutic options.
Reconstructing the sky location of gravitational-wave detected compact binary systems: methodology for testing and comparison
Creators: name: Sidery, Trevor
name: Aylott, Ben
name: Christensen, Nelson
name: Farr, Ben
name: Farr, Will
name: Feroz, Farhan
name: Gair, Jonathan
name: Grover, Katherine
name: Graff, Philip
name: Hanna, Chad
name: Kalogera, Vassiliki
name: Mandel, Ilya
name: O'Shaughnessy, Richard
name: Pitkin, Matthew
name: Price, Larry
name: Raymond, Vivien
name: Roever, Christian
name: Singer, Leo
name: Van der Sluys, Marc
name: Smith, Rory J. E.
name: Vecchio, Alberto
name: Veitch, John
name: Vitale, Salvatore
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The problem of reconstructing the sky position of compact binary coalescences detected via gravitational waves is a central one for future observations with the ground-based network of gravitational-wave laser interferometers, such as Advanced LIGO and Advanced Virgo. Different techniques for sky localisation have been independently developed. They can be divided in two broad categories: fully coherent Bayesian techniques, which are high-latency and aimed at in-depth studies of all the parameters of a source, including sky position, and "triangulation-based" techniques, which exploit the data products from the search stage of the analysis to provide an almost real-time approximation of the posterior probability density function of the sky location of a detection candidate. These techniques have previously been applied to data collected during the last science runs of gravitational-wave detectors operating in the so-called initial configuration. Here, we develop and analyse methods for assessing the self-consistency of parameter estimation methods and carrying out fair comparisons between different algorithms, addressing issues of efficiency and optimality. These methods are general, and can be applied to parameter estimation problems other than sky localisation. We apply these methods to two existing sky localisation techniques representing the two above-mentioned categories, using a set of simulated inspiral-only signals from compact binary systems with total mass $\le 20\,M_\odot$ and non-spinning components. We compare the relative advantages and costs of the two techniques and show that sky location uncertainties are on average a factor $\approx 20$ smaller for fully coherent techniques than for the specific variant of the "triangulation-based" technique used during the last science runs, at the expense of a factor $\approx 1000$ longer processing time.
Strategies of Translation Chinese Medical Terminology into Thai
Creators: name: Thipsuda Theerajettakoon
name: Warisa Asavaratana
Publisher: name: Mahasarakham University
Year: 2023
Subjects: Translation guidelines
translation strategies
Chinese to Thai translation
terminologytranslation
medical term translation

description: Journal of Humanities and Social Sciences Mahasarakham University, 42, 2, no. 227-236