cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Can we ever distinguish between quintessence and a cosmological constant?
Creators: name: Chongchitnan, Sirichai
name: Efstathiou, George
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Many ambitious experiments have been proposed to constrain dark energy and detect its evolution. At present, observational constraints are consistent with a cosmological constant and there is no firm evidence for any evolution in the dark energy equation of state w. In this paper, we pose the following question: suppose that future dark energy surveys constrain w at low redshift to be consistent with -1 to a percent level accuracy, what are the implications for models of dynamical dark energy? We investigate this problem in a model-independent way by following quintessence field trajectories in `energy' phase-space. Attractor dynamics in this phase-space leads to two classes of acceptable models: 1) models with flat potentials, i.e. an effective cosmological constant, and 2) models with potentials that suddenly flatten with a characteristic kink. The prospect of further constraining the second class of models from distance measurements and fluctuation growth rates at low redshift (z<3) seems poor. However, in some models of this second class, the dark energy makes a significant contribution to the total energy density at high redshift. Such models can be further constrained from observation of the cosmic microwave background anisotropies and from primordial nucleosynthesis. It is possible, therefore, to construct models in which the dark energy at high redshift causes observable effects, even if future dark energy surveys constrain w at low redshift to be consistent with -1 to high precision.
description: 10 pages, 6 figures. Version published in Phys. Rev. D
Data-driven expectations for electromagnetic counterpart searches based on LIGO/Virgo public alerts
Creators: name: Petrov, Polina
name: Singer, Leo P.
name: Coughlin, Michael W.
name: Kumar, Vishwesh
name: Almualla, Mouza
name: Anand, Shreya
name: Bulla, Mattia
name: Dietrich, Tim
name: Foucart, Francois
name: Guessoum, Nidhal
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Searches for electromagnetic counterparts of gravitational-wave signals have redoubled since the first detection in 2017 of a binary neutron star merger with a gamma-ray burst, optical/infrared kilonova, and panchromatic afterglow. Yet, one LIGO/Virgo observing run later, there has not yet been a second, secure identification of an electromagnetic counterpart. This is not surprising given that the localization uncertainties of events in LIGO and Virgo's third observing run, O3, were much larger than predicted. We explain this by showing that improvements in data analysis that now allow LIGO/Virgo to detect weaker and hence more poorly localized events have increased the overall number of detections, of which well-localized, gold-plated events make up a smaller proportion overall. We present simulations of the next two LIGO/Virgo/KAGRA observing runs, O4 and O5, that are grounded in the statistics of O3 public alerts. To illustrate the significant impact that the updated predictions can have, we study the follow-up strategy for the Zwicky Transient Facility. Realistic and timely forecasting of gravitational-wave localization accuracy is paramount given the large commitments of telescope time and the need to prioritize which events are followed up. We include a data release of our simulated localizations as a public proposal planning resource for astronomers.
description: ApJ, in press
Efficient exploration and calibration of a semi-analytical model of galaxy formation with deep learning
Creators: name: Elliott, Edward J.
name: Baugh, Carlton M.
name: Lacey, Cedric G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We implement a sample-efficient method for rapid and accurate emulation of semi-analytical galaxy formation models over a wide range of model outputs. We use ensembled deep learning algorithms to produce a fast emulator of an updated version of the GALFORM model from a small number of training examples. We use the emulator to explore the model's parameter space, and apply sensitivity analysis techniques to better understand the relative importance of the model parameters. We uncover key tensions between observational datasets by applying a heuristic weighting scheme in a Markov chain Monte Carlo framework and exploring the effects of requiring improved fits to certain datasets relative to others. Furthermore, we demonstrate that this method can be used to successfully calibrate the model parameters to a comprehensive list of observational constraints. In doing so, we re-discover previous GALFORM fits in an automatic and transparent way, and discover an improved fit by applying a heavier weighting to the fit to the metallicities of early-type galaxies. The deep learning emulator requires a fraction of the model evaluations needed in similar emulation approaches, achieving an out-of-sample mean absolute error at the knee of the K-band luminosity function of 0.06 dex with less than 1000 model evaluations. We demonstrate that this is an extremely efficient, inexpensive and transparent way to explore multi-dimensional parameter spaces, and can be applied more widely beyond semi-analytical galaxy formation models.
description: 21 pages, 15 figures, submitted to MNRAS
Poisson distribution: How tensile properties of particulate polymer composites are enhanced in a Poisson-motivated Taguchi method
Creators: name: Oluwaseyi Ayodele Ajibade
name: Agunsoye, Johnson Olumuyiwa
name: Sunday Ayoola Oke
Publisher: name: Faculty of Engineering, Khon Kaen University
Year: 2019
Subjects: Composite blends
Tensile properties
Curing regimes
Taguchi optimization process
Poisson distribution

description: Engineering and Applied Science Research, 46, 2, 130-141
Spectral compression and entanglement reduction in the cascaded biphoton state with cavities
Creators: name: Wong, Y. -E
name: Tsai, N. -Y.
name: Hiew, W. S.
name: Jen, H. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The cascaded biphoton state generated from a cold atomic ensemble presents one of the strongly correlated resources that can preserve and relay quantum information. Under the four-wave mixing condition, the emitted signal and idler photons from the upper and lower excited states become highly correlated in their traveling directions and entangled in continuous frequency spaces. In this system, we theoretically study the spectral compression of the biphoton source using an external cavity and show the reduction in its frequency entanglement entropy. This indicates, respectively, an improved light absorption efficiency for the idler photon as well as an almost pure biphoton source which is useful in optical quantum networks. We further investigate the limit of the spectral compression that can be achieved by using multiple cavities. Our results show the capability and potential of the biphoton source with external cavities, where the performance of atom-based quantum memory can be enhanced and the entanglement property can be manipulated by tailoring the spectral compression.
description: 4 figures
Reionization Bias in High Redshift Quasar Near-Zones
Creators: name: Wyithe, Stuart
name: Bolton, James
name: Haehnelt, Martin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Absorption spectra of high redshift quasars exhibit an increasingly thick Ly-alpha forest towards z~6. However, the interpretation of these spectra is complicated by the fact that the Ly-alpha optical depth is already large for neutral hydrogen fractions in excess of 10^-4, and also because quasars are expected to reside in dense regions of the IGM. We present a model for the evolution of the ionization state of the IGM which is applicable to the dense, biased regions around high-redshift quasars as well as more typical regions in the IGM, and combine this with numerical radiative transfer simulations. Our model is able to simultaneously reproduce the observed Ly-alpha forest opacity at 4
description: 16 Pages, 9 figures. Submitted for publication to MNRAS
On the accuracy of the binary-collision algorithm in particle-in-cell simulations of magnetically confined fusion plasmas
Creators: name: Kiviniemi, Timo P.
name: Hirvijoki, Eero
name: Virtanen, Antti J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Ideally, binary-collision algorithms conserve kinetic momentum and energy. In practice, the finite size of collision cells and the finite difference in the particle locations affect the conservation properties. In the present work, we investigate numerically how the accuracy of these algorithms is affected when the size of collision cells is large compared with gradient scale length of the background plasma, a parameter essential in full-f fusion plasma simulations. Additionally, we discuss implications for the conserved quantities in drift-kinetic formulations when fluctuating magnetic and electric fields are present: we suggest how the accuracy of the algorithms could potentially be improved with minor modifications.
description: 8 pages, 2 figures
SEMOUR: A Scripted Emotional Speech Repository for Urdu
Creators: name: Zaheer, Nimra
name: Ahmad, Obaid Ullah
name: Ahmed, Ammar
name: Khan, Muhammad Shehryar
name: Shabbir, Mudassir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Designing reliable Speech Emotion Recognition systems is a complex task that inevitably requires sufficient data for training purposes. Such extensive datasets are currently available in only a few languages, including English, German, and Italian. In this paper, we present SEMOUR, the first scripted database of emotion-tagged speech in the Urdu language, to design an Urdu Speech Recognition System. Our gender-balanced dataset contains 15,040 unique instances recorded by eight professional actors eliciting a syntactically complex script. The dataset is phonetically balanced, and reliably exhibits a varied set of emotions as marked by the high agreement scores among human raters in experiments. We also provide various baseline speech emotion prediction scores on the database, which could be used for various applications like personalized robot assistants, diagnosis of psychological disorders, and getting feedback from a low-tech-enabled population, etc. On a random test sample, our model correctly predicts an emotion with a state-of-the-art 92% accuracy.
description: accepted in CHI 2021
Unconventional quantum sound-matter interactions in spin-optomechanical-crystal hybrid systems
Creators: name: Dong, Xing-Liang
name: Li, Peng-Bo
name: Liu, Tao
name: Nori, Franco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We predict a set of unusual quantum acoustic phenomena resulting from sound-matter interactions in a fully tunable solid-state platform, in which an array of solid-state spins in diamond are coupled to quantized acoustic waves in a one-dimensional (1D) optomechanical crystal. We find that, by a spatially varying laser drive that introduces a position-dependent phase in the optomechanical interaction, the mechanical band structure can be tuned in situ, consequently leading to unconventional quantum sound-matter interactions. We show that quasi-chiral sound-matter interactions can occur, with tunable ranges from bidirectional to quasi-unidirectional, when the spins are resonant with the bands. When the solid-state spins'frequency lies within the acoustic band-gap, we demonstrate the emergence of an exotic polariton bound state, which can mediate long-range tunable, odd-neighbor and complex spin-spin interactions. This work expands the present exploration of quantum phononics and can have wide applications in quantum simulation and quantum information processing.
description: 8+11 pages, 4+9 figures, accepted for publication in PRL
Complex interferometry of magnetized plasma: accuracy and limitations
Creators: name: Kochetkov, Iu.
name: Pisarczyk, T.
name: Kalal, M.
name: Chodukowski, T.
name: Zaras-Szydlowska, A.
name: Rusiniak, Z.
name: Dudzak, R.
name: Dostal, J.
name: Krupka, M.
name: Korneev, Ph.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Expanding laser plasmas, produced by high energy laser radiation, possess both high thermal and magnetic field energy density. Characterization of such plasma is challenging but needed for understanding of its physical behaviour. Among all standard experimental techniques for plasma diagnostics, classical interferometry is one of the most convenient, informative and accurate. Attempts to extract more information from each single laser shot have led to development of complex interferometry, which under certain processing allows to reconstruct both plasma electron density and magnetic field strength distributions using just one data object. However, the increase in complexity and universality of the diagnostics requires a more detailed analysis of the extracted values and their accuracy.This work focuses on axisymmetric interaction geometry. We present general analysis, starting from the basic principles and trace main error sources, finally ending up with plasma density and magnetic field distributions with the derived error bars. Use of synthetic profiles makes the analysis universal, though we present an example with real experimental data in the Appendix.
description: 24 pages, 28 figures
THE MATURATION OF THE NEWBORN'S BRAIN
Creators: name: Djuraeva, Barno
name: Toshboyeva, Zulfizar
name: Abdumutalova, Madina
Publisher: name: Zenodo
Year: 2023

description: This article delves into the captivating realm of brain development in newborns, exploring the intricacies of the early stages of cognitive, emotional, and motor growth. It covers the structural components of the neonatal brain, the dynamic processes of synaptic growth and pruning, and the influence of sensory stimulation on neural connections. The article also addresses motor milestones, critical periods, the social and emotional foundations fostered through bonding, and the resilience of the developing brain in the face of challenges. Furthermore, it touches upon the role of genetics and epigenetics in shaping the newborn brain. The aim is to provide a comprehensive understanding of the foundational processes that contribute to the formation of the human mind in its earliest stages..
Torsion Invariants for Families
Creators: name: Goette, Sebastian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 58J52 (Primary) 57R22, 55R40 (Secondary)

description: We give an overview over the higher torsion invariants of Bismut-Lott, Igusa-Klein and Dwyer-Weiss-Williams, including some more or less recent developments.
description: LaTeX, 40 pages; v2: references added, BL = IK announced; v3: reference to DWW = IK added
Physics Validation of Novel Convolutional 2D Architectures for Speeding Up High Energy Physics Simulations
Creators: name: Rehm, Florian
name: Vallecorsa, Sofia
name: Borras, Kerstin
name: Krücker, Dirk
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The precise simulation of particle transport through detectors remains a key element for the successful interpretation of high energy physics results. However, Monte Carlo based simulation is extremely demanding in terms of computing resources. This challenge motivates investigations of faster, alternative approaches for replacing the standard Monte Carlo approach. We apply Generative Adversarial Networks (GANs), a deep learning technique, to replace the calorimeter detector simulations and speeding up the simulation time by orders of magnitude. We follow a previous approach which used three-dimensional convolutional neural networks and develop new two-dimensional convolutional networks to solve the same 3D image generation problem faster. Additionally, we increased the number of parameters and the neural networks representational power, obtaining a higher accuracy. We compare our best convolutional 2D neural network architecture and evaluate it versus the previous 3D architecture and Geant4 data. Our results demonstrate a high physics accuracy and further consolidate the use of GANs for fast detector simulations.
description: Paper published at vCHEP2021 conference
Improving University Students' Understanding of Literary WORKS via A Drama Role-Playing
Creators: name: Waewalee Waewchimplee
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: Role-playing
Teaching literary works
Short story
Reading comprehension

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 1-15
Description of the fluctuating colloid-polymer interface
Creators: name: Blokhuis, Edgar M.
name: Kuipers, Joris
name: Vink, Richard
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: To describe the full spectrum of surface fluctuations of the interface between phase-separated colloid-polymer mixtures from low scattering vector q (classical capillary wave theory) to high q (bulk-like fluctuations), one must take account of the interface's bending rigidity. We find that the bending rigidity is negative and that on approach to the critical point it vanishes proportionally to the interfacial tension. Both features are in agreement with Monte Carlo simulations.
description: 5 pages, 3 figures, 1 table. Accepted for publication in Phys. Rev. Lett
การพัฒนาสินค้าที่ระลึกจากภูมิปัญญาเพื่อส่งเสริมการท่องเที่ยวทางวัฒนธรรมไทยพวน อำเภอบ้านหมี่ จังหวัดลพบุรี
Creators: name: กาสัก เต๊ะขันหมาก
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: สินค้าที่ระลึกจากภูมิปัญญา
ภูมิปัญญาวัฒนธรรมไทยพวน
การท่องเที่ยวทางวัฒนธรรม

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 16-27
รูปแบบการทดสอบความสามารถทางกลไกสำหรับนักเรียนมัธยมศึกษาตอนต้น
Creators: name: ฐาปนา ถาวร
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: แบบทดสอบความสามารถทางกลไก
เกณฑ์ปกติความสามารถทางกลไก
มัธยมศึกษาตอนต้น

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 28-40
สภาวะแวดล้อมที่มีผลต่อศักยภาพอาสาสมัครสาธารณสุขประจำหมู่บ้านในจังหวัดเชียงรายเพื่อรองรับสังคมปัจฉิมวัย
Creators: name: ลัทธพล มุ่งไธสง
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: สภาวะแวดล้อม
ศักยภาพอาสาสมัครสาธารณสุขประจำหมู่บ้าน
สังคมปัจฉิมวัย
สถานการณ์แวดล้อม

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 41-54
การศึกษาสมรรถภาพทางกายและคุณภาพชีวิตด้านร่างกายของผู้สูงอายุ อำเภอเมืองจันทบุรี จังหวัดจันทบุรี
Creators: name: ชิดชนก ศรีราช
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: สมรรถภาพทางกาย
คุณภาพชีวิตด้านร่างกาย
ความต้องการกิจกรรมทางกายและนันทนาการ
ผู้สูงอายุ

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 55-67
กลยุทธ์การเติบโตในอุตสาหกรรมการพิมพ์ไทย ภายใต้บริบทนวัตกรรมยุคใหม่
Creators: name: เทพภวัน เทียนเจริญ
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: กลยุทธ์การเติบโต
อุตสาหกรรมการพิมพ์ไทย
นวัตกรรมยุคใหม่
ธุรกิจการพิมพ์

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 68-82
ความสัมพันธ์เชิงสาเหตุของการรับรู้นักท่องเที่ยวระหว่างส่วนประสมการตลาดและความน่าเชื่อถือของแหล่งข้อมูลของตัวกลางจองที่พักออนไลน์
Creators: name: ธินิกานต์ สังข์สุวรรณ
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: ตัวกลางจองที่พักออนไลน์
ส่วนประสมการตลาดของตัวกลางจองที่พักออนไลน์
ความน่าเชื่อถือของแหล่งข้อมูล

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 83-95
รูปแบบความร่วมมือในการป้องกันปัญหายาเสพติดของผู้นำชุมชนในจังหวัดอุบลราชธานี
Creators: name: กวิณกุล ธรรมสาร
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: รูปแบบความร่วมมือการป้องกันปัญหายาเสพติด
ผู้นำชุมชน
ต้นแบบการเสริมสร้างสังคมไร้ยาเสพติด

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 96-109
Outcomes Following Abiraterone versus Enzalutamide for Prostate Cancer: A Scoping Review Protocol
Creators: name: Shah, Yash
name: Shaver, Amy
name: Kelly, William Kevin
name: Lu-Yao, Grace
Publisher: name: figshare
Year: 2022
Subjects: subject: 110312 Nephrology and Urology
subject: FOS: Clinical medicine
subject: 111204 Cancer Therapy (excl. Chemotherapy and Radiation Therapy)

description: Scoping review protocol to determine the differential toxicities and outcomes of abiraterone acetate and enzalutamide in prostate cancer patients.
Automatic Curriculum Graph Generation for Reinforcement Learning Agents
Creators: name: Walker, Nick
name: Rishi Shah
Publisher: name: Zenodo
Year: 2017
Subjects: reinforcement learning
curriculum learning

description: Poster presented at AAAI 2017 in San Francisco for

https://aaai.org/ocs/index.php/AAAI/AAAI17/paper/view/14961
A narrow-linewidth external cavity quantum dot laser for high-resolution spectroscopy in the near-infrared and yellow spectral ranges
Creators: name: Nevsky, A. Yu.
name: Bressel, U.
name: Eisele, Ch.
name: Okhapkin, M.
name: Schiller, S.
name: Gubenko, A.
name: Livshits, D.
name: Mikhrin, S.
name: Krestnikov, I.
name: Kovsh, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We demonstrate a diode laser system which is suitable for high-resolution spectroscopy in the 1200 nm and yellow spectral ranges. It is based on a two-facet quantum dot chip in a Littrow-type external cavity configuration. The laser is tunable in the range 1125 -1280 nm, with an output power of more than 200 mW and exhibits a free-running linewidth of 200 kHz. Amplitude and frequency noise were characterized, including the dependence of frequency noise on the cavity length. Frequency stabilization to a high-finesse reference cavity is demonstrated reducing the linewidth to about 20 - 30 kHz. Yellow light (> 3 mW) at 578 nm was generated by frequency doubling in an enhancement cavity containing a PPLN crystal. The source has potential application for precision spectroscopy of ultra-cold Yb atoms and molecular hydrogen ions.
Life-Boats - A Sailing Sculptural Installation with Direct Social Participation, Artistic Exchange and Music by Composer Geir Johnson
Creators: name: Norheim, Marit Benthe
Publisher: name: Faculty of Fine and Applied Arts, Chulalongkorn University
Year: 2013
Subjects: Flexibility, Mobility, Archetypal Protection Symbols, Women Life Stages, Direct Involvement, Music Incorporation

description: -, 7, Journal of Urban Culture Research
การศึกษาความเป็นไปได้ในการขยายศูนย์การเรียนรู้ของวิสาหกิจชุมชนเพาะเห็ดอินทรีย์บ้านลิพอนหัวหาร-บ่อแร่ จังหวัดภูเก็ต
Creators: name: จารุวรรณ พรหมเงิน
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: การศึกษาความเป็นไปได้
ศูนย์การเรียนรู้
วิสาหกิจชุมชนเพาะเห็ดอินทรีย์

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 110-122
Oscillations of rapidly rotating stratified neutron stars
Creators: name: Passamonti, A.
name: Haskell, B.
name: Andersson, N.
name: Jones, D. I.
name: Hawke, I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We use time-evolutions of the linear perturbation equations to study the oscillations of rapidly rotating neutrons stars. Our models account for the buoyancy due to composition gradients and we study, for the first time, the nature of the resultant g-modes in a fast spinning star. We provide detailed comparisons of non-stratified and stratified models. This leads to an improved understanding of the relationship between the inertial modes of a non-stratified star and the g-modes of a stratified system. In particular, we demonstrate that each g-mode becomes rotation-dominated, i.e. approaches a particular inertial mode, as the rotation rate of the star is increased. We also discuss issues relating to the gravitational-wave driven instability of the various classes of oscillation modes.
description: 16 pages, 12 figures, 4 tables, corrected Table 1
หัตถกรรมพื้นถิ่น: การศึกษาผ้าทอโบราณไทยพวนสู่การสร้างสรรค์ผลิตภัณฑ์ชุมชน
Creators: name: ทรงวุฒิ เอกวุฒิวงศา
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: หัตถกรรมพื้นถิ่น
ผ้าทอโบราณ
ไทยพวน
ผลิตภัณฑ์ชุมชน

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 123-136
Reliable group communication in distributed systems
Creators: name: Navaratnam, Srivallipuranandan
Publisher: name: University of British Columbia
Year: 2010

description: This work describes the design and implementation details of a reliable group communication mechanism. The mechanism guarantees that messages will be received by all the operational members of the group or by none of them (atomicity). In addition, the sequence of messages will be the same at each of the recipients (order). The message ordering property can be used to simplify distributed database systems and distributed processing algorithms. The proposed mechanism continues to operate despite process, host and communication link failures (survivability). Survivability is essential in fault-tolerant applications.
Prevalence of patellofemoral pain syndrome in young Thai athletes registered in Phitsanulok Provincial Administrative Organization Sports School, Thailand
Creators: name: Somruthai Poomsalood, Karen Hambly
Publisher: name: Faculty of Associated Medical Sciences, Chiang Mai University
Year: 2019
Subjects: prevalence
patellofemoral pain syndrome
training duration
knee

description: Journal of Associated Medical Sciences, 52, 3, 150-157
Network and geometric characterization of three-dimensional fluid transport between two layers
Creators: name: de la Fuente, Rebeca
name: Drótos, Gábor
name: Hernández-García, Emilio
name: López, Cristóbal
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We consider transport in a fluid flow of arbitrary complexity but with a dominant flow direction. This is the situation encountered, for example, when analyzing the dynamics of sufficiently small particles immersed in a turbulent fluid and vertically sinking because of their weight. We develop a formalism characterizing the dynamics of particles released from one layer of fluid and arriving in a second one after traveling along the dominant direction. The main ingredient in our study is the definition of a two-layer map that describes the Lagrangian transport between both layers. We combine geometric approaches and probabilistic network descriptions to analyze the two-layer map. From the geometric point of view, we express the properties of lines, surfaces and densities transported by the flow in terms of singular values related to Lyapunov exponents, and define a new quantifier, the Finite Depth Lyapunov Exponent. Within the network approach, degrees and an entropy are introduced to characterize transport. We also provide relationships between both methodologies. The formalism is illustrated with numerical results for a modification of the ABC flow, a model commonly studied to characterize three-dimensional chaotic advection.
Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
Creators: name: Belle Collaboration
name: Choi, S. -K.
name: Olsen, S. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A distinct peak is observed in the pi^+/- psi' invariant mass distribution near 4.43 GeV in B->K pi^+/- psi' decays. A fit using a Breit Wigner resonance shape yields a peak mass and width of 4433+-4(stat)+-2(syst) MeV and Gamma = 45^+18_-13(stat) ^+30_-13 MeV. The product branching fraction is determined to be Bf(B-->KZ(4430))xBf(Z(4430)-->pi^+psi') = (4.1+-1.0(stat)+-1.4(syst))x10^{-5), where Z(4430) is used to denote the observed structure. The statistical significance of the observed peak is 6.5sigma. These results are obtained from a 605 fb-1 data sample that contains 657 million BBbar pairs collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e- collider.
description: 10 pages, 3 figures, a 2007 Lepton-Photon Symposium submission is modified and submitted to PRL
Wandering breathers and self-trapping in weakly coupled nonlinear chains: classical counterpart of macroscopic tunneling quantum dynamics
Creators: name: Kosevich, Yuriy A.
name: Manevitch, Leonid I.
name: Savin, Alexander V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We present analytical and numerical studies of phase-coherent dynamics of intrinsically localized excitations (breathers) in a system of two weakly coupled nonlinear oscillator chains. We show that there are two qualitatively different dynamical regimes of the coupled breathers, either immovable or slowly-moving: the periodic transverse translation (wandering) of low-amplitude breather between the chains, and the one-chain-localization of high-amplitude breather. These two modes of coupled nonlinear excitations, which involve large number of anharmonic oscillators, can be mapped onto two solutions of a single pendulum equation, detached by a separatrix mode. We also study two-chain breathers, which can be considered as bound states of discrete breathers with different symmetry and center locations in the coupled chains, and bifurcation of the anti-phase two-chain breather into the one-chain one. Delocalizing transition of 1D breather in 2D system of a large number of parallel coupled nonlinear chains is described, in which the breather, initially excited in a given chain, abruptly spreads its vibration energy in the whole 2D system upon decreasing breather frequency or amplitude below the threshold one. The threshold breather frequency is above the cut off phonon frequency in 2D system, and the threshold breather amplitude scales as square root of the inter-chain coupling constant. Delocalizing transition of discrete vibrational breather in 2D and 3D systems of coupled nonlinear chains has an analogy with delocalizing transition for Bose-Einstein condensates in 2D and 3D optical lattices.
description: 33 pages, 16 figures
การบูรณาการองค์ความรู้ด้านหลักกระบวนการคิดเชิงออกแบบ (DESIGN THINKING) กับผู้ประกอบการ เพื่อพัฒนาผลิตภัณฑ์จากภูมิปัญญาท้องถิ่นของชุมชนเกาะลัดอีแท่น อำเภอสามพราน จังหวัดนครปฐม
Creators: name: กวิน ประตูมณีชัย
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: การบูรณาการองค์ความรู้
การออกแบบพัฒนาบรรจุภัณฑ์และฉลากสินค้า
ผลิตภัณฑ์ภูมิปัญญาท้องถิ่น

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 137-149
Quantum reflection: The invisible quantum barrier
Creators: name: de Carvalho, J. X.
name: Hussein, M. S.
name: Li, Weibin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We construct the invisible quantum barrier which represents the phenomenon of quantum reflection using the available data. We use the Abel equation to invert the data. The resulting invisible quantum barrier is double-valued in both axes. We study this invisible barrier in the case of atom and Bose-Einstein Condensate reflection from a solid silicon surface. A time-dependent, one-spatial dimension Gross-Pitaevskii equation is solved for the BEC case. We found that the BEC behaves very similarly to the single atom except for size effects, which manifest themselves in a maximum in the reflectivity at small distances from the wall. The effect of the atom-atom interaction on the BEC reflection and correspondingly on the invisible barrier is found to be appreciable at low velocities and comparable to the finite size effect. The trapping of ultracold atom or BEC between two walls is discussed.
description: 13pages, 6figures
Load fluctuations drive actin network growth
Creators: name: Shaevitz, Joshua W.
name: Fletcher, Daniel A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The growth of actin filament networks is a fundamental biological process that drives a variety of cellular and intracellular motions. During motility, eukaryotic cells and intracellular pathogens are propelled by actin networks organized by nucleation-promoting factors, which trigger the formation of nascent filaments off the side of existing filaments in the network. A Brownian ratchet (BR) mechanism has been proposed to couple actin polymerization to cellular movements, whereby thermal motions are rectified by the addition of actin monomers at the end of growing filaments. Here, by following actin--propelled microspheres using three--dimensional laser tracking, we find that beads adhered to the growing network move via an object--fluctuating BR. Velocity varies with the amplitude of thermal fluctuation and inversely with viscosity as predicted for a BR. In addition, motion is saltatory with a broad distribution of step sizes that is correlated in time. These data point to a model in which thermal fluctuations of the microsphere or entire actin network, and not individual filaments, govern motility. This conclusion is supported by Monte Carlo simulations of an adhesion--based BR and suggests an important role for membrane tension in the control of actin--based cellular protrusions.
description: To be published in PNAS
MD Simulations of Charged Binary Mixtures Reveal a Generic Relation Between High- and Low-Temperature Behavior
Creators: name: Hecht, L.
name: Horstmann, R.
name: Liebchen, B.
name: Vogel, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Experimental studies of the glassy slowdown in molecular liquids indicate that the high-temperature activation energy $E_{\infty}$ of glass-forming liquids is directly related to their glass transition temperature $T_{\text{g}}$. To further investigate such a possible relation between high- and low-temperature dynamics in glass-forming liquids, we analyze the glassy dynamics of binary mixtures using molecular dynamics (MD) simulations. We consider a binary mixture of charged Lennard-Jones particles and vary the partial charges of the particles, and thus, the high-temperature activation energy and the glass transition temperature of the system. Based on previous results, we introduce a phenomenological model describing relaxation times over the whole temperature regime from high temperatures to temperatures well inside the supercooled regime. By investigating the dynamics of both particle species on molecular and diffusive length scales along isochoric and isobaric pathways, we find a quadratic charge dependence of both $E_{\infty}$ and $T_{\text{g}}$, resulting in an approximately constant ratio of both quantities independent of the underlying observable, the thermodynamic ensemble, and the particle species, and this result is robust against the actual definition of $T_{\text{g}}$. This generic relation between the activation energy and the glass transition temperature indicates that high-temperature dynamics and the glassy slowdown are related phenomena, and the knowledge of $E_{\infty}$ may allow to approximately predict $T_{\text{g}}$.
description: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in J. Chem. Phys. 154, 024501 (2021) and may be found at https://doi.org/10.1063/5.0031417
การพัฒนาทักษะของบุคลากรศาลยุติธรรม
Creators: name: อัญพัชญ์ จิระพงศ์รพี
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: การพัฒนาบุคลกร
ทักษะบุคลากร
บุคลากรศาลยุติธรรม

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 150-163
An optimal split of school classes
Creators: name: Stark, Oded
name: Stark, Oded
Publisher: name: Unknown
Year: 2021
Subjects: subject: Institutional and Behavioral Economics
subject: Social-psychological preferences
subject: Distaste for trailing behind others
subject: Unhappiness as measured by relative deprivation
subject: Pressure to perform better
subject: Superior performance of comparators
subject: Assignment of students to subclasses
subject: Optimum incentive to improve performance

description: In many countries, schools have responded to the COVID-19 pandemic by splitting up classes. While the purpose of dividing classes is clearly health-related, the process of doing so poses an interesting question: what is the best way to divide a class so as to maximize the incentive for students to perform better? Using a constructive example, we demonstrate how social-psychological unhappiness can be the basis for an incentive structure that optimally nudges students to improve their performance. The example is based on evidence that students aspire to improve their performance when it lags behind that of other students with whom they naturally compare themselves. For a given set of m students, we quantify unhappiness by the index of relative deprivation, which measures the extent to which a student lags behind other students in the set who are doing better than him. We examine how to divide the set into an exogenously predetermined number of subsets in order to maximize aggregate relative deprivation, so that the incentive for the students to study harder because of unfavorable comparison with other students is at its strongest. We show that the solution to this problem depends only on the students’ ordinally-measured levels of performance, independent of the performance of comparators. In addition, we find that when m is an even number, there are multiple optimal divisions, whereas when m is an odd number, there is only one optimal division.
On Fermi acceleration and MHD-instabilities at ultra-relativistic magnetized shock waves
Creators: name: Pelletier, Guy
name: Lemoine, Martin
name: Marcowith, Alexandre
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Fermi acceleration can take place at ultra-relativistic shock waves if the upstream or downstream magnetic field has been remodeled so that most of the magnetic power lies on short spatial scales. The relevant conditions under which Fermi acceleration become efficient in the presence of both a coherent and a short scale turbulent magnetic field are addressed. Within the MHD approximation, this paper then studies the amplification of a pre-existing magnetic field through the streaming of cosmic rays upstream of a relativistic shock wave. The magnetic field is assumed to be perpendicular in the shock front frame, as generally expected in the limit of large shock Lorentz factor. In the MHD regime, compressive instabilities seeded by the net cosmic-ray charge in the shock precursor (as seen in the shock front frame) develop on the shortest spatial scales but saturate at a moderate level deltaB/B ~ 1, which is not sufficient for Fermi acceleration. As we argue, it is possible that other instabilities outside the MHD range provide enough amplification to allow successful Fermi acceleration.
description: 11 pages, 1 figure; to appear in MNRAS (minor changes)
Using lexical knowledge and parafoveal information for the recognition of common words and suffixes
Creators: name: Rhone, Brock William
Publisher: name: University of British Columbia
Year: 2010

description: Research over the past decade into the psychophysics of reading has demonstrated that information extracted from text falling on the parafoveal and peripheral regions of the retina is used by the human visual system to significantly increase reading speed. Recent results provide evidence that knowledge of word frequency is brought to bear in processing parafoveal data. There is other psychological evidence indicating the type of large-scale features used by the visual system to recognize isolated characters in parafoveal vision. This thesis describes the design and implementation of a system able to recognize the most commonly occurring english words and suffixes from parafoveally available information by employing knowledge of their letter sequences and of large-scale features of lower-case characters. The Marr-Hildreth theory of edge detection provides a description of the information computed by the earliest stages of visual processing from parafoveal words. Large-scale features extracted from this description, while relatively invariant with respect to noise and font changes, are insufficient to uniquely identify most characters but are used to place each into one of several classes of similar characters. The sequence of these 'confusion classes' is found to place a strong constraint on word identity—of the 1000 most common words comprising the system's vocabulary, representing 70% of the volume of the Brown Corpus of printed English, 92% have mutually unique confusion class sequences. Word recognition is achieved by using the confusion class sequence as a key into the vocabulary, retrieving the word or words having the same sequence. Suffixes are recognized in a similar way. Results are presented demonstrating the system's ability to identify words and suffixes in text images over a range of simulated parafoveal eccentricities and in two different fonts, one with serifs and one without. Smoothing by the Marr-Hildreth operator, the simplicity and scale of the features, the size of the character classes, and the context provided by the character sequence give the system a degree of robustness.
R-symmetry breaking, runaway directions and global symmetries in O'Raifeartaigh models
Creators: name: Ferretti, Luca
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss O'Raifeartaigh models with general R-charge assignments, introduced by Shih to break R-symmetry spontaneously. We argue that most of these models have runaway directions related to the R-symmetry. In addition, we study the simplest model with a U(N) global symmetry and show that in a range of parameters R-symmetry is spontaneously broken in a metastable vacuum.
description: 16 pages, 1 figure
MOESM4 of Hemodynamic effects of extended prone position sessions in ARDS
Creators: name: Ruste, Martin
name: Bitker, Laurent
name: Yonis, Hodane
name: Riad, Zakaria
name: Louf-Durier, Aurore
name: Lissonde, Floriane
name: Perinel-Ragey, Sophie
name: Guerin, Claude
name: Richard, Jean-Christophe
Publisher: name: figshare
Year: 2018
Subjects: subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified

description: Additional file 4. Diagnostic performance of variables assessed at T1 to predict a decrease in CI greater than 15% between T1 and T3.
การพัฒนาและส่งเสริมการมีส่วนร่วมของชุมชน ด้วยนวัตกรรมทางวัฒนธรรมการแสดงนาฏศิลป์ชุด "ขนมจีนบ้านประโดก ตำรับหมื่นไวย" ตามแนวคิดเศรษฐกิจสร้างสรรค์เพื่อส่งเสริมการท่องเที่ยวในชุมชนหมื่นไวย จังหวัดนครราชสีมา
Creators: name: นวลรวี กระต่ายทอง
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: การมีส่วนร่วมของชุมชน
นวัตกรรมทางวัฒนธรรม
ชุดการแสดง ขนมจีนบ้านประโดก ตำรับหมื่นไวย

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 4, 164-177
Steric interactions and out-of-equilibrium processes control the internal organization of bacteria
Creators: name: Miangolarra, Ander Movilla
name: Li, Sophia Hsin-Jung
name: Joanny, Jean-François
name: Wingreen, Ned S.
name: Castellana, Michele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Despite the absence of a membrane-enclosed nucleus, the bacterial DNA is typically condensed into a compact body - the nucleoid. This compaction influences the localization and dynamics of many cellular processes including transcription, translation, and cell division. Here, we develop a model that takes into account steric interactions among the components of the Escherichia coli transcriptional-translational machinery (TTM) and out-of-equilibrium effects of mRNA transcription, translation, and degradation, in order to explain many observed features of the nucleoid. We show that steric effects, due to the different molecular shapes of the TTM components, are sufficient to drive equilibrium phase separation of the DNA, explaining the formation and size of the nucleoid. In addition, we show that the observed positioning of the nucleoid at midcell is due to the out-of-equilibrium process of messenger RNA (mRNA) synthesis and degradation: mRNAs apply a pressure on both sides of the nucleoid, localizing it to midcell. We demonstrate that, as the cell grows, the production of these mRNAs is responsible for the nucleoid splitting into two lobes, and for their well-known positioning to 1/4 and 3/4 positions on the long cell axis. Finally, our model quantitatively accounts for the observed expansion of the nucleoid when the pool of cytoplasmic mRNAs is depleted. Overall, our study suggests that steric interactions and out-of-equilibrium effects of the TTM are key drivers of the internal spatial organization of bacterial cells.
description: 21 pages, 11 figures
Time-Resolved characterization of InAsP/InP quantum dots emitting in the C-band telecommunication window
Creators: name: Hostein, Richard
name: Michon, Adrien
name: Beaudoin, Gregoire
name: Gogneau, Noelle
name: Patriache, Gilles
name: Marzin, Jean-Yves
name: Robert-Philip, Isabelle
name: Sagnes, Isabelle
name: Beveratos, Alexios
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The dynamic response of InAsP quantum dots grown on InP(001) substrates by low-pressure Metalorganic Vapor Phase Epitaxy emitting around 1.55 $μ$m, is investigated by means of time-resolved microphotoluminescence as a function of temperature. Exciton lifetime steadily increases from 1 ns at low temperature to reach 4 ns at 300K while the integrated photoluminescence intensity decreases only by a factor of 2/3. These characteristics give evidence that such InAsP/InP quantum dots provide a strong carrier confinement even at room temperature and that their dynamic response is not affected by thermally activated non-radiative recombination up to room temperature.