cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Keeping Teams in the Game: Predicting Dropouts in Online Problem-Based Learning Competition
Creators: name: Panwar, Aditya
name: S, Ashwin T
name: Rajendran, Ramkumar
name: Arya, Kavi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: K.3

description: Online learning and MOOCs have become increasingly popular in recent years, and the trend will continue, given the technology boom. There is a dire need to observe learners' behavior in these online courses, similar to what instructors do in a face-to-face classroom. Learners' strategies and activities become crucial to understanding their behavior. One major challenge in online courses is predicting and preventing dropout behavior. While several studies have tried to perform such analysis, there is still a shortage of studies that employ different data streams to understand and predict the drop rates. Moreover, studies rarely use a fully online team-based collaborative environment as their context. Thus, the current study employs an online longitudinal problem-based learning (PBL) collaborative robotics competition as the testbed. Through methodological triangulation, the study aims to predict dropout behavior via the contributions of Discourse discussion forum 'activities' of participating teams, along with a self-reported Online Learning Strategies Questionnaire (OSLQ). The study also uses Qualitative interviews to enhance the ground truth and results. The OSLQ data is collected from more than 4000 participants. Furthermore, the study seeks to establish the reliability of OSLQ to advance research within online environments. Various Machine Learning algorithms are applied to analyze the data. The findings demonstrate the reliability of OSLQ with our substantial sample size and reveal promising results for predicting the dropout rate in online competition.
Search for the Rare Decays J/Psi --> Ds- e+ nu_e, J/Psi --> D- e+ nu_e, and J/Psi --> D0bar e+ e-
Creators: name: BES Collaboration
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on a search for the decays J/Psi --> Ds- e+ nu_e + c.c., J/Psi --> D- e+ nu_e + c.c., and J/Psi --> D0bar e+ e- + c.c. in a sample of 5.8 * 10^7 J/Psi events collected with the BESII detector at the BEPC. No excess of signal above background is observed, and 90% confidence level upper limits on the branching fractions are set: B(J/Psi --> Ds- e+ nu_e + c.c.)<4.8*10^-5, B(J/Psi --> D- e+ nu_e + c.c.)<1.2*10^-5, and B(J/Psi --> D0bar e+ e- + c.c.)<1.1*10^-5
description: 10 pages, 4 figures
Compact Centimeter and Millimeter Sources in NGC 6334 I(N): OB Stars in the Making?
Creators: name: Rodriguez, Luis F.
name: Zapata, Luis A.
name: Ho, Paul T. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present sensitive, high angular resolution 1.3 cm and 7 mm observations of the massive core NGC 6334 I(N), a region known to be undergoing massive star formation. At 1.3 cm we detect three sources, of which two had been previously detected at centimeter or millimeter wavelengths. At 7 mm we detect four sources. We suggest that three of these sources are subcomponents of the millimeter source SMA 1, that at these wavelengths is the dominant source in the region. The fourth 7 mm source appears to be associated with the relatively isolated source SMA 6. In all four 7 mm sources, the continuum emission is arising from structures of dimensions in the order of 1000 AU for which we estimate masses of order a few solar masses. We interpret these 7 mm sources as massive circumstellar disks that, however, surround stars or compact small stellar groups that at present have masses comparable to those of the disks but that may be accreting on their way to become massive stars.
description: 13 pages, 3 figures
พฤติกรรมการใช้สื่อสังคมออนไลน์ที่เกี่ยวกับสุขภาพกับการรู้เท่าทันสื่อของผู้สูงอายุที่เป็นเบาหวานในเขตกรุงเทพมหานคร
Creators: name: กนิษฐา เทพสุด
name: มนต์ ขอเจริญ
Publisher: name: วารสารมหาวิทยาลัยพายัพ
Year: 2019
Subjects: พฤติกรรมการใช้สื่อสังคมออนไลน์
การรู้เท่าทันสื่อ
สุขภาพ
ผู้สูงอายุ

description: วารสารมหาวิทยาลัยพายัพ, 29, 1, 67
Roughening, deroughening, and nonuniversal scaling of the interface width in electrophoretic deposition of polymer chains
Creators: name: Bentrem, Frank W.
name: Pandey, R. B.
name: Family, Fereydoon
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Growth and roughness of the interface of deposited polymer chains driven by a field onto an impenetrable adsorbing surface are studied by computer simulations in (2+1) dimensions. The evolution of the interface width W shows a crossover from short-time growth described by the exponent beta1 to a long-time growth with exponent beta2 (>beta1). The saturated width increases, i.e., the interface roughens, with the molecular weight Lc, but the roughness exponent alpha (from Ws~L^alpha) becomes negative in contrast to models for particle deposition; alpha depends on the chain length--a nonuniversal scaling with the substrate length L. Roughening and deroughening occur as the field E and the temperature T compete such that Ws=(A+BT)E^-1/2.
description: 5 pages, 5 figures, RevTex
Ranking Structured Objects with Graph Neural Networks
Creators: name: Damke, Clemens
name: Hüllermeier, Eyke
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Graph neural networks (GNNs) have been successfully applied in many structured data domains, with applications ranging from molecular property prediction to the analysis of social networks. Motivated by the broad applicability of GNNs, we propose the family of so-called RankGNNs, a combination of neural Learning to Rank (LtR) methods and GNNs. RankGNNs are trained with a set of pair-wise preferences between graphs, suggesting that one of them is preferred over the other. One practical application of this problem is drug screening, where an expert wants to find the most promising molecules in a large collection of drug candidates. We empirically demonstrate that our proposed pair-wise RankGNN approach either significantly outperforms or at least matches the ranking performance of the naive point-wise baseline approach, in which the LtR problem is solved via GNN-based graph regression.
Percolation in Hierarchical Scale-Free Nets
Creators: name: Rozenfeld, Hernán D.
name: ben-Avraham, Daniel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the percolation phase transition in hierarchical scale-free nets. Depending on the method of construction, the nets can be fractal or small-world (the diameter grows either algebraically or logarithmically with the net size), assortative or disassortative (a measure of the tendency of like-degree nodes to be connected to one another), or possess various degrees of clustering. The percolation phase transition can be analyzed exactly in all these cases, due to the self-similar structure of the hierarchical nets. We find different types of criticality, illustrating the crucial effect of other structural properties besides the scale-free degree distribution of the nets.
description: 9 Pages, 11 figures. References added and minor corrections to manuscript. In press
Human Mars Exploration and Expedition Challenges
Creators: name: M, Malaya Kumar Biswal
name: Annavarapu, Ramesh Naidu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Mars is the next frontier for the space explorers to demonstrate the extent of human presence in space beyond low-earth orbit. Both government and private space industries have been fascinated by Mars quest to attempt a crewed expedition to the red planet. The journey to Mars is vastly challenging as it endowed with numerous challenges from the inception of the mission engage to the mission achievement. Therefore, it is substantial to overcome those challenges for a reliable mission. Hence we have studied and emphasized the comprehensive challenges under the categorization of terrestrial, Earth-bound, interplanetary, Mars-bound, and planetary surface challenges. These challenges are suspected to encounter by the astronauts and mission planners throughout the mission timeline. Our research is different from other studies as it reports complete challenges and their implications on the way to human exploration of Mars.
description: This Paper was presented at AIAA 2021 SciTech Forum with Session: Mission Architectures: Studies, Analysis, and Operational Scenarios for Human Exploration. Paper ID - AIAA-2021-0628
Entanglement in the bimodal Jaynes-Cummings model with the two-mode squeezed vacuum state
Creators: name: El-Orany, Faisal A. A.
name: Abdel-Khalek, S.
name: Abdel-Aty, M.
name: Wahiddin, M. R. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we study the interaction between the two-level atom and a bimodal cavity field, namely, two-mode Jaynes-Cummings model when the atom and the modes are initially in the atomic superposition state and two-mode squeezed vacuum state, respectively. For this system we investigate the atomic inversion, linear entropy and atomic Wehrl entropy. We show that there is a connection between all these quantities. Also we prove that the atomic Wehrl entropy exhibits behaviors similar to those of the linear entropy and the von Neumann entropy. Moreover, we show that the bipartite exhibits periodical disentanglement and derive the explicit forms of the states of the atom and the modes at these values of the interaction times.
description: 12 pages, 4 figures
Dealing with the data imbalance problem on pulsar candidates sifting based on feature selection
Creators: name: Lin, Haitao
name: Li, Xiangru
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Pulsar detection has become an active research topic in radio astronomy recently. One of the essential procedures for pulsar detection is pulsar candidate sifting (PCS), a procedure of finding out the potential pulsar signals in a survey. However, pulsar candidates are always class-imbalanced, as most candidates are non-pulsars such as RFI and only a tiny part of them are from real pulsars. Class imbalance has greatly damaged the performance of machine learning (ML) models, resulting in a heavy cost as some real pulsars are misjudged. To deal with the problem, techniques of choosing relevant features to discriminate pulsars from non-pulsars are focused on, which is known as {\itshape feature selection}. Feature selection is a process of selecting a subset of the most relevant features from a feature pool. The distinguishing features between pulsars and non-pulsars can significantly improve the performance of the classifier even if the data are highly imbalanced.In this work, an algorithm of feature selection called {\itshape K-fold Relief-Greedy} algorithm (KFRG) is designed. KFRG is a two-stage algorithm. In the first stage, it filters out some irrelevant features according to their K-fold Relief scores, while in the second stage, it removes the redundant features and selects the most relevant features by a forward greedy search strategy. Experiments on the dataset of the High Time Resolution Universe survey verified that ML models based on KFRG are capable for PCS, correctly separating pulsars from non-pulsars even if the candidates are highly class-imbalanced.
description: 20 pages, 5 figures, 7 tables
Skyrme pseudopotentials at next-to-next-to-leading order Construction of local densities and first symmetry-breaking calculations
Creators: name: Ryssens, Wouter
name: Bender, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: There is an ongoing quest to improve on the spectroscopic quality of nuclear energy density functionals (EDFs) of the Skyrme type through extensions of its traditional form. One direction for such activities is the inclusion of terms of higher order in gradients in the EDF. We report on exploratory symmetry-breaking calculations performed for an extension of the Skyrme EDF that includes central terms with four gradients at next-to-next-to-leading order (N2LO) and for which the high-quality parametrization SN2LO1 has been constructed recently [P. Becker et al, Phys. Rev. C 96, 044330 (2017)]. Up to now, the investigation of such functionals with higher-order terms was limited to infinite matter and spherically symmetric configurations of singly- and doubly-magic nuclei. We address here nuclei and phenomena that require us to consider axial and non-axial deformation, both for reflection-symmetric and also reflection-asymmetric shapes, as well as the breaking of time-reversal invariance. Achieving these calculations demanded a number of formal developments. These all resulted from the formulation of the N2LO EDF requiring the introduction of new local densities with additional gradients that are not present in the EDF at NLO. Their choice is not unique, but can differ in the way the gradients are coupled. While designing a numerical implementation of N2LO EDFs in Cartesian 3d coordinate-space representation, we have developed a novel definition and a new unifying notation for normal and pair densities that contain gradients at arbitrary order. The resulting scheme resolves several issues with some of the choices that have been made for local densities in the past, in particular when breaking time-reversal symmetry. Guided by general practical considerations, we propose an alternative form of the N2LO contribution to the Skyrme EDF that is built from a different set of densities.
description: 41 pages, 6 figures; second version fixes some typos
Proximity Induced Superconductivity and Multiple Andreev Reflections in Few-Layer-Graphene
Creators: name: Shailos, A.
name: Nativel, W.
name: Kasumov, A.
name: Collet, C.
name: Ferrier, M.
name: Gueron, S.
name: Deblock, R.
name: Bouchiat, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have investigated electronic transport of few-layer-graphene (FLG) connected to superconducting electrodes. The device is prepared by mechanical exfoliation of graphite. A small mesa of FLG is placed on the surface of an insulating Alumina layer over silicon substrate, and is connected with two tungsten electrodes, separated by 2.5 microns, grown by focused ion beam. While tungsten electrodes are superconducting below 4 K, proximity induced superconductivity in FLG is observed below 1K with a large differential resistance drop at low bias. Signatures of multiple Andreev reflections are observed as peaks located at voltages corresponding to sub-multiple values of the superconducting gap of the electrodes.
Maximizing Influence of Leaders in Social Networks
Creators: name: Zhou, Xiaotian
name: Zhang, Zhongzhi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: The operation of adding edges has been frequently used to the study of opinion dynamics in social networks for various purposes. In this paper, we consider the edge addition problem for the DeGroot model of opinion dynamics in a social network with $n$ nodes and $m$ edges, in the presence of a small number $s \ll n$ of competing leaders with binary opposing opinions 0 or 1. Concretely, we pose and investigate the problem of maximizing the equilibrium overall opinion by creating $k$ new edges in a candidate edge set, where each edge is incident to a 1-valued leader and a follower node. We show that the objective function is monotone and submodular. We then propose a simple greedy algorithm with an approximation factor $(1-\frac{1}{e})$ that approximately solves the problem in $O(n^3)$ time. Moreover, we provide a fast algorithm with a $(1-\frac{1}{e}-ε)$ approximation ratio and $\tilde{O}(mkε^{-2})$ time complexity for any $ε>0$, where $\tilde{O}(\cdot)$ notation suppresses the ${\rm poly} (\log n)$ factors. Extensive experiments demonstrate that our second approximate algorithm is efficient and effective, which scales to large networks with more than a million nodes.
description: 10 pages, 2 figures
Quantum error correction may delay, but also cause, entanglement sudden death
Creators: name: Sainz, Isabel
name: Bjork, Gunnar
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Dissipation may cause two initially entangled qubits to evolve into a separable state in a finite time. This behavior is called entanglement sudden death (ESD). We study to what extent quantum error correction can combat ESD. We find that in some cases quantum error correction can delay entanglement sudden death but in other cases quantum error correction may cause ESD for states that otherwise do not suffer from it. Our analysis also shows that fidelity may not be the best measure to compare the efficiency of different error correction codes since the fidelity is not directly coupled to a state's remaining entanglement.
description: 3 figures
Dual oscillators and Quantum Pendulums: spectrum and correlators
Creators: name: Andrianov, A. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We outline the nonlinear transformation in the path integral representation for partition function of O(N) symmetric oscillator systems bringing their duality to certain one-dimensional oscillators with unstable potential shapes. This duality transformation realizes the equivalence between spectra of a Hermitian and a non-Hermitian Hamiltonians. It is exploited to calculate exactly the spectra of quantum rotators . The zero-temperature limit is considered and the dual representation of n-point correlators of coordinate operators is obtained.
description: 12 pages, substantial changes: calculation of correlators added
A Heavy Molecular Weight Atmosphere for the Super-Earth π Men c
Creators: name: Muñoz, A. García
name: Fossati, L.
name: Youngblood, A.
name: Nettelmann, N.
name: Gandolfi, D.
name: Cabrera, J.
name: Rauer, H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Strongly irradiated exoplanets develop extended atmospheres that can be utilized to probe the deeper planet layers. This connection is particularly useful in the study of small exoplanets, whose bulk atmospheres are challenging to characterize directly. Here, we report the 3.4σ detection of C II ions during a single transit of the super-Earth π Men c in front of its Sun-like host star. The transit depth and Doppler velocities are consistent with the ions filling the planet's Roche lobe and moving preferentially away from the star, an indication that they are escaping the planet. We argue that π Men c possesses a thick atmosphere with abundant heavy volatiles ($>=$ 50{\%} by mass of atmosphere) but that needs not be carbon rich. Our reasoning relies upon cumulative evidence from the reported C II detection, the nondetection of H I atoms in a past transit, modeling of the planet's interior, and the assumption that the atmosphere, having survived the most active phases of its Sun-like host star, will survive another 0.2-2 Gyr. Depending on the current mass of atmosphere, π Men c may still transition into a bare rocky core. Our findings confirm the hypothesized compositional diversity of small exoplanets, and represent a milestone toward understanding the planets' formation and evolution paths through the investigation of their extended atmospheres.
description: 40 pages
Cellular model system to dissect the isoform-selectivity of Akt inhibitors
Creators: name: Quambusch, Lena
name: Depta, Laura
name: Landel, Ina
name: Lubeck, Melissa
name: Kirschner, Tonia
name: Nabert, Jonas
name: Uhlenbrock, Niklas
name: Weisner, Jörn
name: Kostka, Michael
name: Levy, Laura M.
name: Schultz-Fademrecht, Carsten
name: Glanemann, Franziska
name: Althoff, Kristina
name: Müller, Matthias P.
name: Siveke, Jens T.
name: Rauh, Daniel
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: Cell culture
subject: Chemical tools
subject: Kinases
subject: Structure-based drug design
subject: X-ray crystallography
subject: 570
subject: 540

description: The protein kinase Akt plays a pivotal role in cellular processes. However, its isoforms’ distinct functions have not been resolved to date, mainly due to the lack of suitable biochemical and cellular tools. Against this background, we present the development of an isoform-dependent Ba/F3 model system to translate biochemical results on isoform specificity to the cellular level. Our cellular model system complemented by protein X-ray crystallography and structure-based ligand design results in covalent-allosteric Akt inhibitors with unique selectivity profiles. In a first proof-of-concept, the developed molecules allow studies on isoform-selective effects of Akt inhibition in cancer cells. Thus, this study will pave the way to resolve isoform-selective roles in health and disease and foster the development of next-generation therapeutics with superior on-target properties.
description: Nature Communications;12
HARMONI: the ELT's First-Light Near-infrared and Visible Integral Field Spectrograph
Creators: name: Thatte, Niranjan
name: Tecza, Matthias
name: Schnetler, Hermine
name: Neichel, Benoît
name: Melotte, Dave
name: Fusco, Thierry
name: Ferraro-Wood, Vanessa
name: Clarke, Fraser
name: Bryson, Ian
name: O'Brien, Kieran
name: Mateo, Mario
name: Lorenzo, Begoña Garcia
name: Evans, Chris
name: Bouché, Nicolas
name: Arribas, Santiago
name: Consortium, the HARMONI
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The High Angular Resolution Monolithic Optical and Near-infrared Integral field spectrograph (HARMONI) is the visible and near-infrared (NIR), adaptive-optics-assisted, integral field spectrograph for ESO's Extremely Large Telescope (ELT). It will have both a single-conjugate adaptive optics (SCAO) mode (using a single bright natural guide star) and a laser tomographic adaptive optics (LTAO) mode (using multiple laser guide stars), providing near diffraction-limited hyper-spectral imaging with high performance and good sky coverage, respectively. A unique high-contrast adaptive optics (HCAO) capability has recently been added for exoplanet characterisation. A large detector complement of eight HAWAII-4RG arrays, four choices of spaxel scale, and 11 grating choices with resolving powers ranging from R~3000 to R~17000 make HARMONI a very versatile instrument that can cater to a wide range of observing programmes.
description: As published in the ESO Messenger
tsrobprep - an R package for robust preprocessing of time series data
Creators: name: Narajewski, Michał
name: Kley-Holsteg, Jens
name: Ziel, Florian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Mathematical Software (cs.MS)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: Data cleaning is a crucial part of every data analysis exercise. Yet, the currently available R packages do not provide fast and robust methods for cleaning and preparation of time series data. The open source package tsrobprep introduces efficient methods for handling missing values and outliers using model based approaches. For data imputation a probabilistic replacement model is proposed, which may consist of autoregressive components and external inputs. For outlier detection a clustering algorithm based on finite mixture modelling is introduced, which considers time series properties in terms of the gradient and the underlying seasonality as features. The procedure allows to return a probability for each observation being outlying data as well as a specific cause for an outlier assignment in terms of the provided feature space. The methods work robust and are fully tunable. Moreover, by providing the auto_data_cleaning function the data preprocessing can be carried out in one cast, without comprehensive tuning and providing suitable results. The primary motivation of the package is the preprocessing of energy system data. We present application for electricity load, wind and solar power data.
D3.1 Vision roadmap of SSD transition
Creators: name: Keränen, Janne
name: Kiiskinen, Harri
name: Mäntynen, Santeri
name: Dusek, Sabrina
name: Riedl, Johannes
name: Sulzgruber, Verena
name: Hubmann, Felix
Publisher: name: Zenodo
Year: 2024
Subjects: superheated steam drying
SSD
SSD technology
Drying technology

description: This vision roadmap for superheated steam drying transition spans from 2024 onwards, starting with fundamental R&D and progressing through pilot, demo and flagship that lead to commercial operations, which extends to work after this project. The roadmap's aim is to develop process concept and plant engineering requirements, and market suitability for SSD technology and identify the needed steps towards the goal. Key milestones include the development of a process concept, plant engineering, and suitability for market products. The creation of the vision roadmap involved collaboration between the partners of the project.
Age-Rotation-Activity Relations for M Dwarf Stars Based on ASAS Photometric Data
Creators: name: Kiraga, M.
name: Stepien, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Based on analysis of photometric observations of nearby M type stars obtained with ASAS, 31 periodic variables were detected. The determined periods are assumed to be related to rotation periods of the investigated stars. Among them 10 new variables with periods longer than 10 days were found, which brings the total number of slowly rotating M stars with known rotation periods to 12 objects. X-ray activity and rotation evolution of M stars follows the trends observed in G-K type stars. Rapidly rotating stars are very active and activity decreases with increasing rotation period but the period-activity relation is mass-dependent which suggests that the rotation period alone is not a proper measure of activity. The investigated stars were grouped according to their mass and the empirical turnover time was determined for each group. It increases with decreasing mass more steeply than for K type stars for which a flat dependence had been found. The resulting Rossby number-activity relation shows an exponential decrease of activity with increasing Rossby number. The analysis of space motions of 27 single stars showed that all rapidly rotating and a few slowly rotating stars belong to young disk (YD) whereas all old disk (OD) stars are slowly rotating. The median rotation period of YD stars is about 2 days and that of OD stars is equal to 47 days, i.e. nearly 25 times longer. The average X-ray flux of OD stars is about 1.7 dex lower than YD stars in a good agreement with the derived Rossby number-activity formula supplemented with rotation-age relation and in a fair agreement with recent observations but in a disagreement with the Skumanich formula supplemented with the activity-rotation relation.
description: 20 pages
ปัจจัยส่วนประสมทางการตลาดและพฤติกรรมการเลือกซื้อสินค้าผ่านสังคมออนไลน์: กรณีศึกษาเฟซบุ๊ก ในเขตอำเภอเมือง จังหวัดลำปาง
Creators: name: สุวภี กลีบบัว
Publisher: name: วารสารมหาวิทยาลัยพายัพ
Year: 2019
Subjects: ส่วนประสมทางการตลาด
การตัดสินใจซื้อ
เครือข่ายสังคมออนไลน์

description: วารสารมหาวิทยาลัยพายัพ, 29, 1, 79
Colossal Magnetoresistance without Mixed Valence in a Layered Phosphide Crystal
Creators: name: Wang, Zhi-Cheng
name: Rogers, Jared D.
name: Yao, Xiaohan
name: Nichols, Renee
name: Atay, Kemal
name: Xu, Bochao
name: Franklin, Jacob
name: Sochnikov, Ilya
name: Ryan, Philip J.
name: Haskel, Daniel
name: Tafti, Fazel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Materials with strong magnetoresistive responses are the backbone of spintronic technology, magnetic sensors, and hard drives. Among them, manganese oxides with a mixed valence and a cubic perovskite structure stand out due to their colossal magnetoresistance (CMR). A double exchange interaction underlies the CMR in manganates, whereby charge transport is enhanced when the spins on neighboring Mn3+ and Mn4+ ions are parallel. Prior efforts to find different materials or mechanisms for CMR resulted in a much smaller effect. Here we show an enormous CMR at low temperatures in EuCd2P2 without manganese, oxygen, mixed valence, or cubic perovskite structure. EuCd2P2 has a layered trigonal lattice and exhibits antiferromagnetic ordering at 11 K. The magnitude of CMR (104 percent) in as-grown crystals of EuCd2P2 rivals the magnitude in optimized thin films of manganates. Our magnetization, transport, and synchrotron X-ray data suggest that strong magnetic fluctuations are responsible for this phenomenon. The realization of CMR at low temperatures without heterovalency leads to a new regime for materials and technologies related to antiferromagnetic spintronics.
MAORY: A Multi-conjugate Adaptive Optics RelaY for ELT
Creators: name: Ciliegi, Paolo
name: Agapito, Guido
name: Aliverti, Matteo
name: Annibali, Francesca
name: Arcidiacono, Carmelo
name: Balestra, Andrea
name: Baruffolo, Andrea
name: Bergomi, Maria
name: Bianco, Andrea
name: Bonaglia, Marco
name: Busoni, Lorenzo
name: Cantiello, Michele
name: Cascone, Enrico
name: Chauvin, Gael
name: Chinellato, Simonetta
name: Cianniello, Vincenzo
name: Correira, Jean Jacques
name: Cosentino, Giuseppe
name: Dall'Ora, Massimo
name: De Caprio, Vincenzo
name: Devaney, Nicholas
name: Di Antonio, Ivan
name: Di Cianno, Amico
name: Di Giammatteo, Ugo
name: D'Orazi, Valentina
name: Di Rico, Gianluca
name: Dolci, Mauro
name: Doutè, Sylvain
name: Eredia, Cristian
name: Farinato, Jacopo
name: Esposito, Simone
name: Fantinel, Daniela
name: Feautrier, Philippe
name: Foppiani, Italo
name: Giro, Enrico
name: Gluck, Laurance
name: Golden, Aaron
name: Goncharov, Alexander
name: Grani, Paolo
name: Gullieuszik, Marco
name: Haguenauer, Pierre
name: Hénault, Francois
name: Hubert, Zoltan
name: Louarn, Miska Le
name: Magrin, Demetrio
name: Maiorano, Elisabetta
name: Mannucci, Filippo
name: Malone, Deborah
name: Marafatto, Luca
name: Moraux, Estelle
name: Munari, Matteo
name: Oberti, Sylvan
name: Pariani, Giorgio
name: Pettazzi, Lorenzo
name: Plantet, Cedric
name: Podio, Linda
name: Portaluri, Elisa
name: Puglisi, Alfio
name: Ragazzoni, Roberto
name: Rakich, Andrew
name: Rebaut, Patrick
name: Redaelli, Edoardo
name: Redman, Matt
name: Riva, Marco
name: Rochat, Sylvain
name: Rodeghiero, Gabriele
name: Salasnich, Bernardo
name: Saracco, Paolo
name: Sordo, Rosanna
name: Spavone, Marilena
name: Sztefek, Marie-Helene
name: Valentini, Angelo
name: Vanzella, Eros
name: Verinaud, Christophe
name: Xompero, Marco
name: Zaggia, Simone
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: MAORY is the adaptive optics module for ELT providing two gravity invariant ports with the same optical quality for two different client instruments. It enable high angular resolution observations in the near infrared over a large field of view (~1 arcmin2 ) by real time compensation of the wavefront distortions due to atmospheric turbulence. Wavefront sensing is performed by laser and natural guide stars while the wavefront sensor compensation is performed by an adaptive deformable mirror in MAORY which works together with the telescope's adaptive and tip tilt mirrors M4 and M5 respectively.
description: 4 pages, 4 figures
Characterization of Caulobacters isolated from wastewater treatment systems and assay development for their enumeration
Creators: name: MacRae, Jean Dorothy
Publisher: name: University of British Columbia
Year: 2010

description: Caulobacters are gram-negative bacteria that have a biphasic life cycle consisting of a swarmer and a stalked stage. As a result they have elicited interest as a simple developmental model. Less attention has focussed on their role in the environment, although they have been found in almost every aquatic environment as well as in many soils. Caulobacters are often described as oligotrophic bacteria because of their prevalence in pristine waters but have now been isolated from the relatively nutrient-rich wastewater environment. In order to learn more about this population some basic characterization was carried out and an assay system to determine their prevalence in sewage plants was designed. Most of the organisms isolated from sewage treatment facilities had similar gross morphological features, but differed in holdfast composition, total protein profile, antibiotic resistance and restriction fragment length polymorphism, thereby indicating a greater diversity than originally assumed. Most of the organisms hybridized with flagellin and surface array genes that had previously been cloned, and only one of 155 non-Caulobacter sewage isolates hybridized with the flagellin gene probe; consequently these were used in a DNA-based enumeration strategy. DNA was isolated directly from sewage and probed with the flagellin and the surface array gene probes. The signals obtained were compared to standards made up of pooled Caulobacter DNA from the sewage isolates and non-Caulobacter DNA from organisms also present in sewage. Using this assay Caulobacters could only be detected above the 1% level, which was higher than their proportion in the wastewater environment. It appears that this approach will not be useful in monitoring Caulobacters in treatment plants unless a more highly conserved or higher copy number probe is found.
Glueball mass from quantized knot solitons and gauge-invariant gluon mass
Creators: name: Kondo, Kei-Ichi
name: Ono, Akihito
name: Shibata, Akihiro
name: Shinohara, Toru
name: Murakami, Takeharu
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose an approach which enables one to obtain simultaneously the glueball mass and the gluon mass in the gauge-invariant way to shed new light on the mass gap problem in Yang-Mills theory. First, we point out that the Faddeev (Skyrme--Faddeev-Niemi) model can be induced through the gauge-invariant vacuum condensate of mass dimension two from SU(2) Yang-Mills theory. Second, we obtain the glueball mass spectrum by performing the collective coordinate quantization of the topological knot soliton in the Faddeev model. Third, we demonstrate that a relationship between the glueball mass and the gluon mass is obtained, since the gauge-invariant gluon mass is also induced from the relevant vacuum condensate. Finally, we determine physical values of two parameters in the Faddeev model and give an estimate of the relevant vacuum condensation in Yang-Mills theory. Our results indicate that the Faddeev model can play the role of a low-energy effective theory of the quantum SU(2) Yang-Mills theory.
description: 17 pages, 2 figures, 3 tables; a version accepted for publication in J. Phys. A: Math. Gen.; Sect. 2 and sect. 5 (old sect. 4) are modified. Sect. 4, Tables 1 and Table 3 are added
Book Reviews
Creators: name: Brierley, Jane
name: Ahenakew, Alice
name: Wolfart, H.C.
name: Ahenakew, Fred
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: • Huron-Wendat: The Heritage of the Circle Georges E. Sioui, translated from the French by Jane Brierley Vancouver and Toronto: UBC Press • ah-ayitaw isi e-ki-kiskeyihtahkik maskihkiy They Kneiu Both Sides ofMedicine - Cree Tales of Curing and Cursing, Told by Alice Ahenakew - Edited and translated by H.C. Wolfart and Freda Ahenakew University of Manitoba Press
description: Canadian Journal of Native Education, Vol. 25 No. 1 (2001)
Deliverable 7.1 – Set of KPIs for Mediterranean Marine Fish Farming (MMFF) Sector
Creators: name: Marino, Giovanna
name: Cardia, Francesco
name: Petochi, Tommaso
name: Donadelli, Valeria
Publisher: name: Zenodo
Year: 2018

description: Management of aquaculture farms needs to constantly monitor production parameters with the aim of optimizing technical efficiency of production cycles, to reduce production costs and to enhance competitiveness and sustainability. A benchmarking tool, based on Key Performance Indicators (KPIs), was built to benchmark biological capacity, cost-efficiency, fish health and welfare and environmental performance of marine Mediterranean fish farming industry. The KPI tool was developed in close collaboration with the five fish farming Producer Associations (APROMAR, FGM, API, CCE-CAA, SFAMN), aggregating the major European aquaculture companies, RD&I aquaculture managers and scientific partners. It was specifically designed for sea bass and sea bream aquaculture and for being applied to the whole production cycle, from hatchery to grow-out till harvest, excluding the processing phase. The tool includes 55 Key Performance Indicators: 35 KPIs Technical-KPIs (T-KPI) to measure the technical performances, as growth, feed efficiency, deformities, losses, diseases and use of antibiotics and antiparasitic compounds 9 Welfare KPIs (WE-KPI) to assess welfare during fish farming husbandry practices 14 Environmental KPIs (E-KPIs) to measure the use of land, water and energy required for fish production and to estimate the impact of farming practices on marine habitat and biodiversity 2 Key Economic Performance Indicators (EC-KPIs) to measure the productivity and efficiency of aquaculture farms.
การจัดการทรัพยากรมนุษย์ที่มีผลต่อประสิทธิภาพการทำงานของกิจการโรงโม่หิน: กรณีศึกษาห้างหุ้นส่วนจำกัดศรีวิเศษ 99
Creators: name: ดาวเดือน โลหิตปุระ
Publisher: name: วารสารมหาวิทยาลัยพายัพ
Year: 2019
Subjects: การจัดการทรัพยากรมนุษย์
ประสิทธิภาพการทำงาน
กิจการโรงโม่หิน

description: วารสารมหาวิทยาลัยพายัพ, 29, 1, 94
แนวทางการจัดการงานสงกรานต์ปลอดเครื่องดื่มแอลกอฮอล์: กรณีศึกษาถนนตระกูลข้าวในประเทศไทย
Creators: name: วิฑูร อินทจันท์
name: ไชยนันท์ ปัญญาศิริ
Publisher: name: วารสารมหาวิทยาลัยพายัพ
Year: 2019
Subjects: การจัดการ
งานสงกรานต์
เครื่องดื่มแอลกอฮอล์
ถนนตระกูลข้าว

description: วารสารมหาวิทยาลัยพายัพ, 29, 1, 104
Reversible gelation and dynamical arrest of dipolar colloids
Creators: name: Blaak, Ronald
name: Miller, Mark A.
name: Hansen, Jean-Pierre
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We use molecular dynamics simulations of a simple model to show that dispersions of slightly elongated colloidal particles with long-range dipolar interactions, like ferrofluids, can form a physical (reversible) gel at low volume fractions. On cooling, the particles first self-assemble into a transient percolating network of cross-linked chains, which, at much lower temperatures, then undergoes a kinetic transition to a dynamically arrested state with broken ergodicity. This transition from a transient to a frozen gel is characterised by dynamical signatures reminiscent of jamming in much denser dispersions.
description: 6 pages, 7 figures
Manipulation of Multipartite Entanglement in an Array of Quantum Dots
Creators: name: Chen, Yen-Ju
name: Chuu, Chih-Sung
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Multipartite entanglement is indispensable in the implementation of quantum technologies and the fundamental test of quantum mechanics. Here we study how the W state and W-like state may be generated in a quantum-dot array by controlling the coupling between an incident photon and the quantum dots on a waveguide. We also discuss how the coupling may be controlled to observe the sudden death of entanglement. Our work can find potential applications in quantum information processing.
Local Distinguishability of Any Three Quantum States
Creators: name: Bandyopadhyay, Somshubhro
name: Walgate, Jonathan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We prove that any three linearly independent pure quantum states can always be locally distinguished with nonzero probability regardless of their dimension, entanglement, or multipartite structure. Almost always, all three states can be unambiguously identified. The only exceptional case, where one state is locally knowable but the other two are not, is found among multi-qubit states.
description: 4 Pages, v2 - second corollory corrected, reference added; v3- abstract expanded, proofs elaborated, reference added
Advances in ion back-flow reduction in cascaded gaseous electron multipliers incorporating R-MHSP elements
Creators: name: Lyashenko, A. V.
name: Breskin, A.
name: Chechik, R.
name: Veloso, J. F. C. A.
name: Santos, J. M. F. Dos
name: Amaro, F. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A new concept is presented for the reduction of ion back-flow in GEM-based cascaded gaseous electron multipliers, by incorporating Micro-Hole & Strip Plate (MHSP) elements operating in reversed-bias mode (R-MHSP). About an order of magnitude reduction in ion back-flow is achieved by diverting back-drifting ions from their original path. A R-MHSP/2GEM/MHSP cascaded multiplier operated at total gain of ~1.5*10^5 yielded ion back-flow fractions of 0.0015 and 0.0004, at drift fields of 0.5 and 0.1 kV/cm, respectively. A 2R-MHSP/MHSP cascaded multiplier operated at a total gain of ~10^5, yielded an ion back-flow fraction of 0.003. We discuss the concept for trapping back-flowing ions in these cascaded multipliers and the relevance to gaseous photomultiplier and TPC applications; directions for further future developments are outlined.
description: 17 pages, 9 figures, submitted to JINST
Eloquence and imagery : the function of Fra Angelico's frescoes in the Chapel of Pope Nicholas V
Creators: name: Langdale, Glyn Allen
Publisher: name: University of British Columbia
Year: 2010

description: Fra Angelico's fresco cycle of the lives and martyrdoms of SS. Stephen and Lawrence in the Chapel of Nicholas V (1447-49) communicate in a style which seems to be rhetorical in the sense that they employ numerous strategies which appear to aim at persuading viewers of the truth of the ideological notions the frescoes convey. This fact encourages one to consider the specific pressures which the context of the frescoes' production may have exerted. Commissioned by a pope who had the training of a professional humanist - and who, as a humanist, had interest in the efficacy of rhetoric - these frescoes convey their messages with a persuasive pictorial 'eloquence1 which, in some respects, corresponds to or plays off on humanist definitions of eloquence. The following study attempts to explain what messages these frescoes were meant to communicate, and how their manner of communication is rhetorical. The rhetorical style becomes a method of conveying old ideas in new ways, and may have made the messages more resonant in the context in which they were meant to function. A paucity of primary documentation on the frescoes makes this type of evaluation difficult. Problems in identifying the frescoes' intended audience and working on the troublesome ground between the rhetorical nature of written and pictorial texts also complicates this' investigation. Nevertheless, by considering the problems and aims of Nicholas Vs pontificate, and by closely examining the subject matter, organization, and expression of the frescoes, some indication as to their probable function may be gained.
Two Teachers of Aboriginal Students: Effective Practice in Sociohistorical Realities
Creators: name: Goulet, Linda
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: The study of effective teaching for Aboriginal students needs to be situated in the com­plexities of sociohistorical realities. In addition to cultural differences, the analysis needs to include the impact of colonization and power relationships in which educa­tion takes place. In this article, the stories of two teachers are presented to illustrate how in practice these teachers attend to both culture and colonization. Each teacher in different ways integrates language and cultural knowledge and uses cultural norms and values. In doing so, they develop more equitable power relationships and deal with the impact of colonization.
description: Canadian Journal of Native Education, Vol. 25 No. 1 (2001)
Parity-Violating Nuclear Force as derived from QCD Sum Rules
Creators: name: Hwang, W-Y. P.
name: Wen, Chih-Yi
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Parity-violating nuclear force, as may be accessed from parity violation studies in nuclear systems, represents an area of nonleptonic weak interactions which has been the subject of experimental investigations for several decades. In the simple meson-exchange picture, parity-violating nuclear force may be parameterized as arising from exchange of π, ρ, ω, or other meson(s) with strong meson-nucleon coupling at one vertex and weak parity-violating meson-nucleon coupling at the other vertex. The QCD sum rule method allows for a fairly complicated, but nevertheless straightforward, leading-order loop-contribution determination of the various parity-violating MNN couplings starting from QCD (with the nontrivial vacuum) and Glashow-Salam-Weinberg electroweak theory. We continue our earlier investigation of parity-violating πNN coupling (by Henley, Hwang, and Kisslinger) to other parity-violating couplings. Our predictions are in reasonable overall agreement with the results estimated on phenomenological grounds, such as in the now classic paper of Desplanques, Donoghue, and Holstein (DDH), in the global experimental fit of Adelberger and Haxton (AH), or the effective field theory (EFT) thinking of Ramsey-Musolf and Page (RP).
description: 17 pages, 5 figures