cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Observational consequences of optical band milliarcsecond-scale structure in active galactic nuclei discovered by Gaia
Creators: name: Petrov, Leonid
name: Kovalev, Yuri Y.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We interpret the recent discovery of a preferable VLBI/Gaia offset direction for radio-loud active galactic nuclei (AGNs) along the parsec-scale radio jets as a manifestation of their optical structure on scales of 1 to 100 milliarcseconds. The extended jet structure affects the Gaia position stronger than the VLBI position due to the difference in observing techniques. Gaia detects total power while VLBI measures the correlated quantity, visibility, and therefore, sensitive to compact structures. The synergy of VLBI that is sensitive to the position of the most compact source component, usually associated with the opaque radio core, and Gaia that is sensitive to the centroid of optical emission, opens a window of opportunity to study optical jets at milliarcsecond resolution, two orders of magnitude finer than the resolution of most existing optical instruments. We demonstrate that strong variability of optical jets is able to cause a jitter comparable to the VLBI/Gaia offsets at a quiet state, i.e. several milliarcseconds. We show that the VLBI/Gaia position jitter correlation with the AGN optical light curve may help to locate the region where the flare occurred, estimate its distance from the super-massive black hole and the ratio of the flux density in the flaring region to the total flux density.
description: Revised in accordance with received comments
A Study of the Allan Variance for Constant-Mean Non-Stationary Processes
Creators: name: Xu, Haotian
name: Guerrier, Stéphane
name: Molinari, Roberto
name: Zhang, Yuming
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: The Allan Variance (AV) is a widely used quantity in areas focusing on error measurement as well as in the general analysis of variance for autocorrelated processes in domains such as engineering and, more specifically, metrology. The form of this quantity is widely used to detect noise patterns and indications of stability within signals. However, the properties of this quantity are not known for commonly occurring processes whose covariance structure is non-stationary and, in these cases, an erroneous interpretation of the AV could lead to misleading conclusions. This paper generalizes the theoretical form of the AV to some non-stationary processes while at the same time being valid also for weakly stationary processes. Some simulation examples show how this new form can help to understand the processes for which the AV is able to distinguish these from the stationary cases and hence allow for a better interpretation of this quantity in applied cases.
MPEC 2023-R126 : 2023 RA4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RA4

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Updating structural wind turbine blade models via invertible neural networks
Creators: name: Noever Castelos, Pablo
Publisher: name: Hannover : Institut für Windenergiesystem, Leibniz Universität Hannover
Year: 2023
Subjects: subject: model updating
subject: wind energy turbine
subject: wind energy
subject: rotor blade
subject: invertible neural network
subject: reliability
subject: digital twin
subject: machine learning
subject: neural network
subject: Modellaktualisierung
subject: Windenergieanlage
subject: Rotorblatt
subject: invertierbare neuronale Netze
subject: Zuverlässigkeit
subject: digitaler Zwilling
subject: maschinelles Lernen
subject: neuronale Netze
subject: Windenergie
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::624 | Ingenieurbau und Umwelttechnik

description: Wind turbine rotor blades are huge and complex composite structures that are exposed to exceptionally high loads, both extreme and fatigue loads. These can result in damages causing severe downtimes or repair costs. It is thus of utmost importance that the blades are carefully designed, including uncertainty analyses in order to produce safe, reliable, and cost-efficient wind turbines. An accurate reliability assessment should already start during the design and manufacturing phases. Recent developments in digitalization give rise to the concept of a digital twin, which replicates a product and its properties into a digital environment. Model updating is a technique, which helps to adapt the digital twin according to the measured characteristics of the real structure. Current model updating techniques are most often based on heuristic optimization algorithms, which are computationally expensive, can only deal with a relatively small parameter space, or do not estimate the uncertainty of the computed results. This thesis’ objective is to present a computationally efficient model updating method that recovers parameter deviation. This method is able to consider uncertainties and a high fidelity degree of the rotor blade model. A validated, fully parameterized model generator is used to perform a physics-informed training of a conditional invertible neural network. This network finally represents a surrogate of the inverse physical model, which then can be used to recover model parameters based on the structural responses of the blade. All presented generic model updating applications show excellent results, predicting the a posteriori distribution of the significant model parameters accurately.
An On/Off Berry Phase Switch in Circular Graphene Resonators
Creators: name: Ghahari, Fereshte
name: Walkup, Daniel
name: Gutiérrez, Christopher
name: Rodriguez-Nieva, Joaquin F.
name: Zhao, Yue
name: Wyrick, Jonathan
name: Natterer, Fabian D.
name: Cullen, William G.
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Levitov, Leonid S.
name: Zhitenev, Nikolai B.
name: Stroscio, Joseph A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The phase of a quantum state may not return to its original value after the system's parameters cycle around a closed path; instead, the wavefunction may acquire a measurable phase difference called the Berry phase. Berry phases typically have been accessed through interference experiments. Here, we demonstrate an unusual Berry-phase-induced spectroscopic feature: a sudden and large increase in the energy of angular-momentum states in circular graphene p-n junction resonators when a small critical magnetic field is reached. This behavior results from turning on a $π$-Berry phase associated with the topological properties of Dirac fermions in graphene. The Berry phase can be switched on and off with small magnetic field changes on the order of 10 mT, potentially enabling a variety of optoelectronic graphene device applications.
Developing Students’ Capacity Against Examination Malpractice Behaviours Through Selected Psychosocial Strategies.pdf
Creators: name: Orji, Evelyn   Ijeoma
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: Examination malpractice refers to all forms of cheating and illegal examination related offences that gives student unmerited grades, promotion or higher placement. Some causes of examination malpractice include those connected to institutional, societal and personal variables. As expected, several solutions have been suggested to curb it and those tested have shown some results. But yet, the strategies have not done much in addressing the personal variables, particularly those that should target changing the cognitive and affective antisocial orientation and build their capabilities on ethics and study. These are expected to help students desist from examination malpractice behaviors. One researcher noted that it is almost a routine for students to cheat. The present researcher perceive that the right intervention has not been used to curb examination malpractice among students across all level of the education, which may be the reason it still persists. In fact, examination malpractice is equally evolving in sophistication and assuming innovative dimensions, so this intervention is apt. Suffice to emphasize that examination malpractice in the education system if not curbed continues to undermine the achievement of quality education and production of quality graduates. The consequences of it among middle and high skilled work force has caused the society so much disappointment and loss. Losses incurred in retraining programs to enhance work adjustment of employees, inability to perform as a graduate when called up to, to mention some. Therefore, intervention in student’s classroom learning is needed such as lessons on how to process information and to make use of memory strategies in studying. This is with the view to besides achieving good academic performance, but to help more of them to be self-reliant, productive and employable in this 21st century economy and beyond. The paper concludes that unlearning examination malpractice behavior
An aluminum optical clock setup and its evaluation using Ca+
Creators: name: Kramer, Johannes Albrecht
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2023
Subjects: subject: optical clocks
subject: aluminum ion
subject: calcium ion
subject: quantum logic spectroscopy
subject: systematic clock frequency shifts
subject: single ion clock
subject: metrology
subject: time and frequency
subject: optische Uhr
subject: Aluminiumion
subject: Calciumion
subject: Quantenlogikspektroskopie
subject: systemtatische Uhrenfrequenzverschiebungen
subject: Einzelionenuhr
subject: Metrologie
subject: Zeit und Frequenz
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: This thesis reports about the progress of the aluminum ion clock that is set up at the German National Metrological Institute, Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig. All known relevant systematic frequency shifts are discussed. The systematic shifts were measured on the co-trapped logic ion 40Ca+, which is advantageous due to its higher sensitivity to external fields compared to 27Al+. The observation of the clock transition of 27Al+ and an analysis of the detection error is described.
MPEC 2023-R127 : 2023 RB4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RB4

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Convection shapes the trade-off between antibiotic efficacy and the selection for resistance in spatial gradients
Creators: name: Gralka, Matti
name: Fusco, Diana
name: Martis, Stephen
name: Hallatschek, Oskar
Publisher: name: arXiv
Year: 2017
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Since penicillin was discovered about 90 years ago, we have become used to using drugs to eradicate unwanted pathogenic cells. However, using drugs to kill bacteria, viruses or cancer cells has the serious side effect of selecting for mutant types that survive the drug attack. A key question therefore is how one could eradicate as many cells as possible for a given acceptable risk of drug resistance evolution. We address this general question in a model of drug resistance evolution in spatial drug gradients, which recent experiments and theories have suggested as key drivers of drug resistance. Importantly, our model takes into account the influence of convection, resulting for instance from blood flow. Using stochastic simulations, we study the fates of individual resistance mutations and quantify the trade-off between the killing of wild-type cells and the rise of resistance mutations: shallow gradients and convection into the antibiotic region promote wild-type death, at the cost of increasing the establishment probability of resistance mutations. We can explain these observed trends by modeling the adaptation process as a branching random walk. Our analysis reveals that the trade-off between death and adaptation depends on the relative length scales of the spatial drug gradient and random dispersal, and the strength of convection. Our results show that convection can have a momentous effect on the rate of establishment of new mutations, and may heavily impact the efficiency of antibiotic treatment.
Characterisation of the radial velocity signal induced by rotation in late-type dwarfs
Creators: name: Mascareño, A. Suárez
name: Rebolo, R.
name: Hernández, J. I. González
name: Esposito, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We investigate the activity induced signals related to rotation in late type stars (FGKM). We analyse the Ca II H&K, the H alpha and the radial velocity time-series of 55 stars using the spectra from the HARPS public database and the light-curves provided by the ASAS survey. We search for short term periodic signals in the time-series of activity indicators as well as in the photometric light-curves. Radial velocity data sets are then analysed to determine the presence of activity induced signals. We measure a radial velocity signal induced by rotational modulation of stellar surface features in 37 stars, from late F-type to mid M-type stars. We report an empirical relationship, with some degree of spectral type dependency, between the mean level of chromospheric emission measured by the log(Rhk) and the measured radial velocity semi amplitude. We also report a relationship betweeen the semi amplitude of the chromospheric measured signal and the semi amplitude of the radial velocity induced signal, which strongly depends on the spectral type. We find that for a given strength of chromospheric activity (i.e. a given rotation period) M-type stars tend to induce larger rotation related radial velocity signals than G and K-type stars.
description: 11 pages, 11 figures, 6 tables
Weyl-link semimetals
Creators: name: Chang, Po-Yao
name: Yee, Chuck-Hou
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A family of topological semimetallic phases where twofold degenerate gapless points form linked rings is introduced. We refer to this phase as Weyl-link semimetals. A concrete two-band model with two linked nodal lines is constructed. We demonstrate that the Chern-Simons 3-form depends on the linking number of rings in a generic two-band model. In addition, we show the emergence of zero-energy modes in the Landau level spectrum can reveal the location of nodal lines, providing a method of probing their linking number.
description: 9 pages, 4 figures -- Published in PRB Rapid Communication
Why and How We Built a Domain-based Subject Gateway: Ortho Search
Creators: name: Upshall, Michael
Publisher: name: Zenodo
Year: 2023
Subjects: Orthopaedics
Ontology
Search
CORE

description: OrthoSearch is a domain-based aggregated collection of content relating to orthopaedics. Produced and curated by one small independent publisher, it aims to provide a comprehensive coverage of domain content by indexing the content from all the journals in the sector. An innovative interface combines free-text and semantic searching, and the use of a custom ontology created for this site, together with an extensive set of filters, makes content discovery more powerful and manageable than using a more general search engine. Users are able to discover content via symptoms, drugs, or conditions. The content included comprises not only academic articles but conference papers, discussion pieces, case studies, videos, and other content types. Launched in 2021, OrthoSearch has become the default starting point for academics and medical professionals seeking to keep up to date in the domain of orthopaedic surgery.
Cosmic particle colliders: simulations of self-interacting dark matter with anisotropic scattering
Creators: name: Robertson, Andrew
name: Massey, Richard
name: Eke, Vincent
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate how self-interacting dark matter (SIDM) with anisotropic scattering affects the evolution of isolated dark matter haloes as well as systems with two colliding haloes. For isolated haloes, we find that the evolution can be adequately captured by treating the scattering as isotropic, as long as the isotropic cross-section is appropriately matched to the underlying anisotropic model. We find that this matching should not be done using the momentum transfer cross-section, as has been done previously. Matching should instead be performed via a modified momentum transfer cross-section that takes into account that dark matter particles can be relabelled after they scatter, without altering the dynamics. However, using cross-sections that are matched to give the same behaviour in isolated haloes, we find that treating dark matter scattering as isotropic under-predicts the effects of anisotropic dark matter scattering when haloes collide. In particular, the DM-galaxy offset induced by SIDM in colliding galaxy clusters is larger when we simulate the underlying particle model, than if we use a matched isotropic model. On the other hand, well motivated particle models with anisotropic scattering typically have cross-sections with a strong velocity dependence, and we discover a previously unrecognised effect that suppresses DM-galaxy offsets in colliding clusters making it hard for these systems to provide competitive constraints on such particle models.
description: 12 pages, 8 figures, v2 matches accepted MNRAS version
Production of Polyclonal Antibody in The Rabbit (Oryctolagus Cuniculus), Its Isolation & Quantification
Creators: name: Yadav, Pramod
Publisher: name: Zenodo
Year: 2021
Subjects: Monoclonal antibodies
ELISA
SDS-PAGE
Bradford and Lowry assay
Immunization

description: Abstract: Antibodies are immunoglobulin proteins that are naturally produced in our body or respond to foreign immunogens such as antigens, bacterial toxoids, heat-killed viruses & virus-like particles (VLP), they actively or passively fight against invaders like pathogens, and protect us from various diseases. Our study is focused on the introduction of an antigen into the rabbit & the isolation of polyclonal antibodies from the serum and its characterization. For our study, we injected BSA as an antigen in different body parts of the rabbit at certain time intervals (up to 8 weeks) and observed an increasing concentration of polyclonal antibodies with each booster dose of antigens. For the characterization & quantification of polyclonal antibodies, we performed various techniques such as Lowry assays, Bradford assays, Microtiter Bradford assay, ELISA, and for the identification of molecular weight of antibody SDS-PAGE & Native PAGE were performed. In our studies, we find the concentration of serum polyclonal antibodies are approx. 120.67 mg/ml & 167.78 mg/ml of isolated serum of the rabbit after 7th & 8th immunization respectively. The molecular weight of the serum BSA antibody are ranging from 63-68 kDa. These isolated serum antibodies can be further modified & edited for treatment & diagnostic purposes by immunological techniques. This study also proposed the fundamental steps for the development of diagnostic kits and also describe the steps for the generation of immunity through antibodies. Currently, many antibody-based kits for various diagnostic purpose is quite useful. In the pandemic session 2019-2021, for the Nobel SARS-CoV 2 infection the antibody-based diagnostic kit is very popular and helps many populations in disease diagnosis and its prevention. Currently, the market value of these types of diagnostic kits were growing day by day and so many new pharmaceutical companies are ready to invest huge capital in the production of these kits.
Prospects for new physics in $τ\to l μμ$ at current and future colliders
Creators: name: Hays, Chris
name: Mitra, Manimala
name: Spannowsky, Michael
name: Waite, Philip
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The discovery of lepton flavour violating interactions will be striking evidence for physics beyond the Standard Model. Focusing on the three decays $τ^\mp \to μ^\pm μ^\mp μ^\mp$, $τ^\mp \to e^\pm μ^\mp μ^\mp$ and $τ^\mp \to e^\mp μ^\mp μ^\pm$, we evaluate the discovery potential of current and future high-energy colliders to probe lepton flavour violation in the $τ$ sector. Based on this potential we determine the expected constraints on parameters of new physics in the context of the Type-II Seesaw Model, the Left-Right Symmetric Model, and the Minimal Supersymmetric Standard Model. The existing and ongoing 13 TeV run of the Large Hadron Collider has the potential to produce constraints that outperform the existing $e^+ e^-$ collider limits for the $τ^\mp \to μ^\pm μ^\mp μ^\mp$ decay and achieve a branching fraction limit of $\lesssim 10^{-8}$. With a future circular $e^+ e^-$ collider, constraints on the $τ\to l μμ$ branching fractions could reach as low as a few times $10^{-12}$.
description: 26 pages, 19 figures. V2: Typo fixes, references added, figure file sizes reduced. Discussion added on consistency with mu -> 3e limits in the Type-II Seesaw Model. Agrees with version published in JHEP
MPEC 2023-R128 : 2023 RC4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RC4

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Black Hole Entropy from BMS Symmetry at the Horizon
Creators: name: Carlip, S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Near the horizon, the obvious symmetries of a black hole spacetime---the horizon-preserving diffeomorphisms---are enhanced to a larger symmetry group with a BMS${}_3$ algebra. Using dimensional reduction and covariant phase space techniques, I investigate this augmented symmetry, and show that it is strong enough to determine the black hole entropy.
description: 11+1 pages; v2: added references; v3: introduction rewritten to provide more context
กลยุทธ์การพัฒนาสมรรถนะวิชาชีพของครูโรงเรียนพระปริยัติธรรม แผนกสามัญศึกษา เขต 4
Creators: name: พระครูนิรุติวรโสภณ (วชิรเมธีวรฉัตร)
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตนครสวรรค์
Year: 2023
Subjects: กลยุทธ์
การพัฒนาสมรรถนะวิชาชีพของครู
โรงเรียนพระปริยัติธรรม

description: The Journal of Research and Academics, 6, 4, ม.ค.-16
การประยุกต์หลักราชวสดีธรรมสำหรับงานราชการ
Creators: name: พระฐิติ กิตฺติปญฺโญ (จำนงค์สุข)
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตนครสวรรค์
Year: 2023
Subjects: การประยุกต์
หลักธรรม
ข้าราชการ
ราชวสดีธรรม

description: The Journal of Research and Academics, 6, 4, 17-28
การพัฒนาศักยภาพชุมชนในการลดพฤติกรรมเสี่ยงจากการใช้สารเคมีกำจัดศัตรูพืชองค์การบริหารส่วนตำบลคำโคกสูง อำเภอวังสามหมอ จังหวัดอุดรธานี
Creators: name: วิรยา วิฑูธีรศานต์
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตนครสวรรค์
Year: 2023
Subjects: พฤติกรรมเสี่ยง
สารเคมีกำจัดศัตรูพืช
ศักยภาพชุมชน

description: The Journal of Research and Academics, 6, 4, 29-46
Problem of quantifying quantum correlations with non-commutative discord
Creators: name: Majtey, A. P.
name: Bussandri, D.
name: Osán, T. M.
name: Lamberti, P. W.
name: Valdés-Hernández, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we analyze a non-commutativity measure of quantum correlations recently proposed by Y. Guo [Sci. Rep. 6, 25241 (2016)]. By recourse to a systematic survey of a two-qubit system, we detected an undesirable behavior of such a measure related to its representation-dependence. In the case of pure states, this dependence manifests as a non-satisfactory entanglement measure whenever a representation other than the Schmidt's is used. In order to avoid this dependence on the basis, we argue that a minimization procedure over the set of all possible representations of the quantum state is required. In the case of pure states, this minimization can be analytically performed and the optimal basis turns out to be that of Schmidt's. In addition, the resulting measure inherits the main properties of Guo's measure and, unlike the latter, it reduces to a legitimate entanglement measure in the case of pure states. Some examples involving general mixed states are also analyzed considering such a optimization. The results show that, in most cases of interest, the use of Guo's measure can result in a overestimation of quantum correlations. However, since Guo's measure has the advantage of being easily computable, it might be used as a qualitative estimator of the presence of quantum correlations.
description: 6 pages, 4 figures
การพัฒนาระบบสารสนเทศเพื่อการบริหารสถาบันการอาชีวศึกษาภาคกลาง 1 สังกัดสำนักงานคณะกรรมการการอาชีวศึกษา
Creators: name: วสุภัทร กุลเมือง
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตนครสวรรค์
Year: 2023
Subjects: การพัฒนาระบบสารสนเทศ
ผู้บริหาร
สถาบันการอาชีวศึกษาภาคกลาง 1

description: The Journal of Research and Academics, 6, 4, 47-58
Forces and energetics of intermittent swimming
Creators: name: Floryan, Daniel
name: Van Buren, Tyler
name: Smits, Alexander J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Experiments are reported on intermittent swimming motions. Water tunnel experiments on a nominally two-dimensional pitching foil show that the mean thrust and power scale linearly with the duty cycle, from a value of 0.2 all the way up to continuous motions, indicating that individual bursts of activity in intermittent motions are independent of each other. This conclusion is corroborated by PIV flow visualizations, which show that the main vortical structures in the wake do not change with duty cycle. The experimental data also demonstrate that intermittent motions are generally energetically advantageous over continuous motions. When metabolic energy losses are taken into account, this conclusion is maintained for metabolic power fractions less than 1.
description: 9 pages
MPEC 2023-R129 : 2023 RD4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 RD4

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
การบริหารจัดการลวดลายผ้าไหมมัดหมี่อย่างยั่งยืน
Creators: name: วิเนตร ดอนเส
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตนครสวรรค์
Year: 2023
Subjects: การบริหารจัดการ
ลวดลายผ้าไหมมัดหมี่
อย่างยั่งยืน

description: The Journal of Research and Academics, 6, 4, 59-74
Search for heavy neutrinos or third-generation leptoquarks in final states with two hadronically decaying tau leptons and two jets in proton-proton collisions at sqrt(s) = 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for new particles has been conducted using events with two high transverse momentum (pt) tau leptons that decay hadronically, at least two high-pt jets, and missing transverse energy from the tau lepton decays. The analysis is performed using data from proton-proton collisions, collected by the CMS experiment in 2015 at sqrt(s) = 13 TeV, corresponding to an integrated luminosity of 2.1 inverse femtobarns. The results are interpreted in two physics models. The first model involves heavy right-handed neutrinos, N[l] (l = e, mu, tau), and right-handed charged bosons, W[R], arising in a left-right symmetric extension of the standard model. Masses of the W[R] boson below 2.35 (1.63) TeV are excluded at 95% confidence level, assuming the N[tau] mass is 0.8 (0.2) times the mass of the W[R] boson and that only the N[tau] flavor contributes to the W[R] decay width. In the second model, pair production of third-generation scalar leptoquarks that decay into tau tau bb is considered. Third-generation scalar leptoquarks with masses below 740 GeV are excluded, assuming a 100% branching fraction for the leptoquark decay to a tau lepton and a bottom quark. This is the first search at hadron colliders for the third-generation Majorana neutrino, as well as the first search for third-generation leptoquarks in the final state with a pair of hadronically decaying tau leptons and jets.
description: Replaced with the published version. Added the journal reference and DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-16-016/index.html
อิทธิพลของสังคมออนไลน์และความพึงพอใจเป็นปัจจัยคั่นกลางของการตลาดแบบผสานทุกช่องทางไปสู่ความตั้งใจกลับมาซื้อซ้ำของผู้บริโภคในธุรกิจออนไลน์มณฑลเสฉวน สาธารณรัฐประชาชนจีน
Creators: name: หัว เซิง เหว่ย
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตนครสวรรค์
Year: 2023
Subjects: สังคมออนไลน์
ปัจจัยคั่นกลาง
การตลาดแบบผสานทุกช่องทาง
ความตั้งใจกลับมาซื้อซ้ำ
มณฑลเสฉวน สาธารณรัฐประชาชนจีน

description: The Journal of Research and Academics, 6, 4, 75-96
การวิจัยประเมินความต้องการจำเป็นในการพัฒนานวัตกรรมเพื่อส่งเสริมการเรียนรู้สะตีมศึกษาให้กับนิสิตฝึกประสบการณ์วิชาชีพครูระดับประถมศึกษา
Creators: name: ณัชชา เจริญชนะกิจ
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตนครสวรรค์
Year: 2023
Subjects: การประเมินความต้องการจำเป็น
นิสิตฝึกประสบการณ์วิชาชีพครู
สะตีมศึกษา

description: The Journal of Research and Academics, 6, 4, 97-114
Rodzina w cieniu eurosieroctwa czy eurosieroctwo w cieniu rodziny
Creators: name: Kiełtyk-Zaborowska, Izabela
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego. Filia w Piotrkowie Trybunalskim
Year: 2021

description: W książce podjęto temat współczesnej eurorodziny/rodziny migracyjnej, która skazana jest na pokonywanie wielu trudności, jakie pojawiają się w wyniku rozłąki. Konieczność wyjazdu jednego z rodziców lub obojga podyktowana jest najczęściej względami finansowymi, a co się za tym kryje: brakiem pracy w miejscu zamieszkania, spłatą kredytu, chęcią podniesienia statusu materialnego rodziny, zabezpieczenia finansowego rodziny na przyszłość. Osłabiają się więzi rodzinne, utrzymanie których na poziomie sprzed migracji jest niezwykle trudne. Wyjazd jednego z rodziców do pracy za granicę przynosi konsekwencje, które odczuwa cała rodzina, zarówno rodzic pracujący z dala od domu, jak i jego najbliżsi, a lepsze warunki materiale idą w tym przypadku w parze z rozłąką. To problem, którego konsekwencje mogą być widoczne dopiero po kilku miesiącach lub latach. Rozłąka z rodzicem, który podejmuje decyzję o wyjeździe za granicę, negatywnie wpływa na dziecko, pojawiają się trudności dziecka w szkole, i w funkcjonowaniu w grupie rówieśniczej. Częstym problemem staje się wejście w rolę nieobecnego rodzica, rodzica pozostającego w domu. Wykorzystanie technologii ICT jest jednym ze sposobów podtrzymania więzi w eurorodzinie, pozwala i ułatwia na stały i częsty kontakt członków rodziny migracyjnej. Nowoczesne technologie stanowią jeden z aspektów wsparcia rodziny, w której nastąpiła czasowa rozłąka jej członków.
Microparticle trajectories in a high-throughput channel for contact-free fractionation by dielectrophoresis
Creators: name: Wang, Yan
name: Du, Fei
name: Pesch, Georg R.
name: Köser, Jan
name: Baune, Michael
name: Thöming, Jorg
Publisher: name: Elsevier
Year: 2016
Subjects: subject: Fractionation
subject: Dielectrophoresis
subject: Particle trajectory
subject: Resolution
subject: High throughput
subject: Mimenima
subject: 620

description: Continuous, contact-free fractionation of sensitive microparticles at high throughput is a challenge. For this purpose, we developed a sheath flow assisted dielectrophoretic (DEP) field-flow separator with a tailored arrangement of cylindrical interdigitated electrodes (cIDE) and observed size-dependent trajectories of dispersed particles. Using a voltage input of 200 Veff at a frequency of 200 kHz, polystyrene particles (45, 25, and 11 µm in diameter) levitated to different heights along the channel length due to a negative DEP force. Experimental observations agree well with simulated particle trajectories that were obtained by a modified Lagrangian particle tracking model in combination with Laplace's and Navier–Stokes equations. By exploiting the size-dependent levitation height difference the desired particle size fraction can be collected at a specific channel length. The required channel length of the proposed cIDE separator increases with decreasing particle size to be separated. The quality of theoretical fractionation, which we quantify by resolution, improves strongly with reduced collector width, reduced volume flow rate and increased voltage input. The sensitivity of these dependencies increases with decreasing particle size. We calculated a theoretical throughput of up to 47 mL min−1 when trading-off design and operation parameters, allowing for contact-free fractionation of sensitive microparticles with negligible shear stress.
ประสิทธิผลของสถานศึกษาโดยการบริหารงานตามหลักธรรมาภิบาลของผู้บริหารในสังกัดสำนักงานเขตพื้นที่การศึกษามัธยมศึกษานครศรีธรรมราช
Creators: name: จิราวรรณ ปรีชา
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตนครสวรรค์
Year: 2023
Subjects: ประสิทธิผลของสถานศึกษา
หลักธรรมาภิบาล
การบริหารตามหลักธรรมาภิบาล

description: The Journal of Research and Academics, 6, 4, 115-126
Coatings of active and heat-resistant cobalt-aluminium xerogel catalysts
Creators: name: Schubert, Miriam
name: Schubert, Lennart
name: Thomé, Andreas
name: Kiewidt, Lars
name: Rosebrock, Christopher
name: Thöming, Jorg
name: Roessner, Frank
name: Bäumer, Marcus
Publisher: name: Elsevier
Year: 2016
Subjects: subject: Xerogel
subject: Cobalt catalyst
subject: Coatings
subject: Fischer-Tropsch
subject: CO(2) methanation
subject: Mimenima
subject: 620

description: The application of catalytically coated metallic foams in catalytic processes has a high potential for exothermic catalytic reactions such as CO2 methanation or Fischer-Tropsch synthesis due to good heat conductivity, improved turbulent flow properties and high catalyst efficiencies. But the preparation of homogenous catalyst coats without pore blocking is challenging with conventional wash coating techniques. Here, we report on a stable and additive free colloidal CoAlOOH suspension (sol) for the preparation of catalytically active Co/Al2O3 xerogel catalysts and coatings. Powders with 18wt% Co3O4 prepared from this additive free synthesis route show a catalytic activity in Fischer-Tropsch synthesis and CO2 methanation which is similar to a catalyst prepared by incipient wetness impregnation (IWI) after activating the material under flowing hydrogen at 430°C. Yet, the xerogel catalyst exhibits a much higher thermal stability as compared to the IWI catalyst, as demonstrated in catalytic tests after different heat agings between 430°C and 580°C. It was also found that the addition of polyethylene glycol (PEG) to the sol influences the catalytic properties of the formed xerogels negatively. Only non-reducible cobalt spinels were formed from a CoAlOOH sol with 20wt% PEG. Metallic foams with pores sizes between 450 and 1200μm were coated with the additive free CoAlOOH sol, which resulted in homogenous xerogel layers. First catalytic tests of the coated metal foams (1200μm) showed good performance in CO2 methanation.
Influence of sintering necks on the spectral behaviour of ITO clusters using the Discrete Dipole Approximation
Creators: name: Skorupski, Krzysztof
name: Hellmers, Jens
name: Feng, Wen
name: Mroczka, Janusz
name: Wriedt, Thomas
name: Mädler, Lutz
Publisher: name: Elsevier
Year: 2015
Subjects: subject: Fractal aggregates
subject: Light scattering
subject: DDA
subject: Necking
subject: Sintering
subject: Mimenima
subject: 620

description: In this paper we study the spectral behaviour of indium tin oxide (ITO) nanoparticle clusters using different sinter neck models for the connections between the primary particles. The investigations include light scattering calculations based on the Discrete Dipole Approximation (DDA). The corresponding clusters are generated using the Cluster–Cluster algorithm proposed by Filippov et al. Different sintering neck models led to significantly different spectral features. A spectral neck factor that reveals the thickness of the necks connecting the primary particles with a simple measurement method is introduced.
Predicting optimal temperature profiles in single-stage fixed-bed reactors for CO2-methanation
Creators: name: Kiewidt, Lars
name: Thöming, Jorg
Publisher: name: Elsevier
Year: 2015
Subjects: subject: Methanation
subject: Thermal optimization
subject: Process intensification
subject: Chemical energy storage
subject: Semenov number
subject: Mimenima
subject: 620

description: The catalytic conversion of carbon dioxide into methane, known as Sabatier process, is a promising option for chemical storage of excess renewable energy and greenhouse gas emission control. Typically externally cooled fixed-bed reactors (FBR) using supported nickel or ruthenium catalyst are applied. The Sabatier process, however, is strongly exothermic and leads to substantial hot spots within the reactor at stoichiometric feed ratios. Although high temperatures increase the reaction rate in general, they thermodynamically limit the achievable methane-yield in the Sabatier process. Here, we present an easy-to-use method based on a Semenov number optimization (SNO) to compute optimal axial temperature profiles in single-stage fixed-bed reactors that account for kinetic and thermodynamic limitations simultaneously, and thus result in maximized yield for a fixed reactor length. In a case study on CO2-methanation, these temperature profiles result in a twofold improvement of the methane-yield compared to isothermal and adiabatic operation, and thus demonstrate the high potential of thermal optimization that lies in the Sabatier process. The SNO-method provides a valuable tool to compute optimal temperature profiles, and allows intuitive insight into the key parameters for thermal process intensification. Further, it can readily be transferred to other processes that suffer from the dilemma between kinetic and thermodynamic limitations. Our findings illustrate the attractiveness of the SNO-method to compute optimal temperature profiles in fixed-bed reactors, and the need for catalyst supports with enhanced and tailorable heat transport properties.
An Anomalous Circular Photogalvanic Effect in the Weyl Semimetal TaAs
Creators: name: Sun, Kai
name: Sun, Shuaishuai
name: Guo, Cong
name: Wei, Linlin
name: Tian, Huanfang
name: Yang, Huaixin
name: Chen, Genfu
name: Li, Jianqi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Weyl semimetal (WSM) is expected to be an ideal spintronic material owing to its spin currents carried by the bulk and surface states with spin-momentum locking. A photocurrent generation in noncentrosymmetric WSM was also predicted owing to its broken inversion symmetry and linear energy dispersion which are unique to Weyl systems. In our recent measurements, the circular photogalvanic effect (CPGE) has been demonstrated in WSM of TaAs. The CPGE voltage is proportional to the helicity of the incident light and reverses its direction on changing the radiation helicity from left handed to right handed, a periodical oscillation therefore appears following with the alteration of optical polarization. We herein attribute the CPGE to the asymmetric optical excitation of the Weyl cone, which could result in an asymmetric distribution of photoexcited carriers in momentum space according to an optical spin selection rule.
description: This paper has been withdrawn by the author due to some crucial errors
The effect of more practice on the automatization of evaluation - Study 1
Creators: name: Shechter, Anat
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: Social Psychology
subject: Psychology
subject: FOS: Psychology

description: This study is the same as the previous study in this project but with a correction in the self-report task (in the previous research we did not show one of the images in the self-report part). Additionally, we used only images that worked best previously (positive images were judged as positive and negative as negative).
In situ analysis of gas phase reaction processes within monolithic catalyst supports by applying NMR imaging methods
Creators: name: Ulpts, Jürgen
name: Dreher, Wolfgang
name: Kiewidt, Lars
name: Schubert, Miriam
name: Thöming, Jorg
Publisher: name: Elsevier
Year: 2016
Subjects: subject: 3D magnetic resonance spectroscopic imaging
subject: Catalytic monolith
subject: Gas phase reaction
subject: Non-invasive concentration measurement
subject: Mimenima
subject: 620

description: Measuring spatially resolved concentration distributions in gas phase reaction systems is an important tool to validate simulation calculations, improve the understanding of transport processes within the catalyst, and identify potentials for improvements of monolithic catalyst supports. The commonly used measurement methods for such opaque systems are invasive and, thus, might be misleading due to alteration of the system. To overcome this issue, a 3D magnetic resonance spectroscopic imaging (MRSI) method was developed and implemented on a 7-Tesla NMR imaging system to map the concentration distributions within opaque monolithic catalysts using the ethylene hydrogenation process as case study. The reaction was catalyzed by a coated sponge packing or a honeycomb monolith within an NMR compatible packed bed reactor. Temperatures at the inlet and the outlet of the catalyst beds were simultaneously determined by analyzing the spectra of inserted ethylene glycol filled glass capsules. Steady state concentration profiles and temperature levels were measured at different reaction conditions. In order to prove the plausibility of the measured spatial distributions of compound concentrations, the experimental results were compared to a 1D model of the reactor based on kinetic data from literature. Furthermore, a comparison with integral concentration measurements using a mass spectrometer demonstrated deviations below 5%. The results show that 3D MRSI is a valuable and reliable tool to non-invasively measure spatially resolved process parameters within optically and/or mechanically inaccessible structured monolithic catalyst supports, even if only standard thermal polarization is exploited and the use of expensive and technically challenging signal enhancement techniques (hyperpolarization) is avoided. We expect that 3D MRSI can pave the way toward deeper insight into the interactions between catalyst, catalyst support, and gas phase.
A Surrogate Model of Gravitational Waveforms from Numerical Relativity Simulations of Precessing Binary Black Hole Mergers
Creators: name: Blackman, Jonathan
name: Field, Scott E.
name: Scheel, Mark A.
name: Galley, Chad R.
name: Hemberger, Daniel A.
name: Schmidt, Patricia
name: Smith, Rory
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the first surrogate model for gravitational waveforms from the coalescence of precessing binary black holes. We call this surrogate model NRSur4d2s. Our methodology significantly extends recently introduced reduced-order and surrogate modeling techniques, and is capable of directly modeling numerical relativity waveforms without introducing phenomenological assumptions or approximations to general relativity. Motivated by GW150914, LIGO's first detection of gravitational waves from merging black holes, the model is built from a set of $276$ numerical relativity (NR) simulations with mass ratios $q \leq 2$, dimensionless spin magnitudes up to $0.8$, and the restriction that the initial spin of the smaller black hole lies along the axis of orbital angular momentum. It produces waveforms which begin $\sim 30$ gravitational wave cycles before merger and continue through ringdown, and which contain the effects of precession as well as all $\ell \in \{2, 3\}$ spin-weighted spherical-harmonic modes. We perform cross-validation studies to compare the model to NR waveforms \emph{not} used to build the model, and find a better agreement within the parameter range of the model than other, state-of-the-art precessing waveform models, with typical mismatches of $10^{-3}$. We also construct a frequency domain surrogate model (called NRSur4d2s_FDROM) which can be evaluated in $50\, \mathrm{ms}$ and is suitable for performing parameter estimation studies on gravitational wave detections similar to GW150914.
description: 34 pages, 26 figures
Finite equal norm Parseval Wavelet Frames over Prime Fields
Creators: name: Rahimi, Asghar
name: Seddighi, Niloufar
Publisher: name: arXiv
Year: 2017
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 42C15, 42C40, 65T60

description: In the framework of wave packet analysis, finite wavelet systems are particular classes of finite wave packet systems. In this paper, using a scaling matrix on a permuted version of the discrete Fourier transform (DFT) of system generator, we derive a locally-scaled version of the DFT of system genarator and obtain a finite equal-norm Parseval wavelet frame over prime fields. We also give a characterization of all multiplicative subgroups of the cyclic multiplicative group, for which the associated wavelet systems form frames. Finally, we present some concrete examples as applications of our results.
description: arXiv admin note: text overlap with arXiv:1703.05012