cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bayesian Inversion of Stokes Profiles
Creators: name: Ramos, A. Asensio
name: Gonzalez, M. J. Martinez
name: Rubino-Martin, J. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: [abridged] Inversion techniques are the most powerful methods to obtain information about the thermodynamical and magnetic properties of solar and stellar atmospheres. In the last years, we have witnessed the development of highly sophisticated inversion codes that are now widely applied to spectro-polarimetric observations. The majority of these inversion codes are based on the optimization of a complicated non-linear merit function. However, no reliable and statistically well-defined confidence intervals can be obtained for the parameters inferred from the inversions. A correct estimation of the confidence intervals for all the parameters that describe the model is mandatory. Additionally, it is fundamental to apply efficient techniques to assess the ability of models to reproduce the observations and to what extent the models have to be refined or can be simplified. Bayesian techniques are applied to analyze the performance of the model to fit a given observed Stokes vector. The posterior distribution, is efficiently sampled using a Markov Chain Monte Carlo method. For simplicity, we focus on the Milne-Eddington approximate solution of the radiative transfer equation and we only take into account the generation of polarization through the Zeeman effect. However, the method is extremely general and other more complex forward models can be applied. We illustrate the ability of the method with the aid of academic and realistic examples. We show that the information provided by the posterior distribution turns out to be fundamental to understand and determine the amount of information available in the Stokes profiles in these particular cases.
description: 15 pages, 12 figures, accepted for publication in A&A
High-dimensional Z' phenomenology at hadron colliders
Creators: name: Fuks, B.
name: van der Bij, J. J.
name: Xu, Q.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the phenomenology of a Z'-boson field coupled to hypercharge. The Z' propagator has a non-trivial Källén-Lehmann spectral density due to the mixing with a higher dimensional inert vector field. As a consequence detection possibilities at hadron colliders are reduced. We determine the range of parameters where this field can be studied at the Tevatron and the LHC through its production cross section via the Drell-Yan mechanism.
description: 9 pages, 8 figures; version accepted by Phys.Rev.D
Physics-informed generative neural network: an application to troposphere temperature prediction
Creators: name: Chen, Zhihao
name: Gao, Jie
name: Wang, Weikai
name: Yan, Zheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The troposphere is one of the atmospheric layers where most weather phenomena occur. Temperature variations in the troposphere, especially at 500 hPa, a typical level of the middle troposphere, are significant indicators of future weather changes. Numerical weather prediction is effective for temperature prediction, but its computational complexity hinders a timely response. This paper proposes a novel temperature prediction approach in framework ofphysics-informed deep learning. The new model, called PGnet, builds upon a generative neural network with a mask matrix. The mask is designed to distinguish the low-quality predicted regions generated by the first physical stage. The generative neural network takes the mask as prior for the second-stage refined predictions. A mask-loss and a jump pattern strategy are developed to train the generative neural network without accumulating errors during making time-series predictions. Experiments on ERA5 demonstrate that PGnet can generate more refined temperature predictions than the state-of-the-art.
The Spitzer c2d Survey of Weak-line T Tauri Stars II: New Constraints on the Timescale for Planet Building
Creators: name: Cieza, Lucas
name: Padgett, Deborah L.
name: Stapelfeldt, Karl R.
name: Augereau, Jean-Charles
name: Harvey, Paul
name: Evans, Neal J.
name: II
name: Merin, Bruno
name: Koerner, David
name: Sargent, Anneila
name: van Dishoeck, Ewine F.
name: Allen, Lori
name: Blake, Geoffrey
name: Brooke, Timothy
name: Chapman, Nicholas
name: Huard, Tracy
name: Lai, Shih-Ping
name: Mundy, Lee
name: Myers, Philip C.
name: Spiesman, William
name: Wahhaj, Zahed
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: One of the central goals of the Spitzer Legacy Project ``From Molecular Cores to Planet-forming Disks'' (c2d) is to determine the frequency of remnant circumstellar disks around weak-line T Tauri stars (wTTs) and to study the properties and evolutionary status of these disks. Here we present a census of disks for a sample of over 230 spectroscopically identified wTTs located in the c2d IRAC (3.6, 4.5, 4.8, and 8.0 um) and MIPS (24 um) maps of the Ophiuchus, Lupus, and Perseus Molecular Clouds. We find that ~20% of the wTTs in a magnitude limited subsample have noticeable IR-excesses at IRAC wavelengths indicating the presence of a circumstellar disk. The disk frequencies we find in these 3 regions are ~3-6 times larger than that recently found for a sample of 83 relatively isolated wTTs located, for the most part, outside the highest extinction regions covered by the c2d IRAC and MIPS maps. The disk fractions we find are more consistent with those obtained in recent Spitzer studies of wTTs in young clusters such as IC 348 and Tr 37. From their location in the H-R diagram, we find that, in our sample, the wTTs with excesses are among the younger part of the age distribution. Still, up to ~50% of the apparently youngest stars in the sample show no evidence of IR excess, suggesting that the circumstellar disks of a sizable fraction of pre-main-sequence stars dissipate in a timescale of ~1 Myr. We also find that none of the stars in our sample apparently older than ~10 Myrs have detectable circumstellar disks at wavelengths < 24 um. Also, we find that the wTTs disks in our sample exhibit a wide range of properties (SED morphology, inner radius, L_DISK/L*, etc) which bridge the gaps observed between the cTTs and the debris disk regimes.
description: 54 pages, 13 figures, Accepted by ApJ
Additional file 1 of Guidelines and best practice recommendations on reproductive health services provision amid COVID-19 pandemic: scoping review
Creators: name: Tolu, Lemi Belay
name: Garumma Tolu Feyissa
name: Wondimu Gudu Jeldu
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 1. Data extraction tool ANC, labour and delivery, and postnatal care.
Marne-la-Vallée, une ville nouvelle héritée de l’histoire
Creators: name: Laborde, Julien
Publisher: name: Collectif Inventer le Grand Paris
Year: 2018

description: Construite sous l’impulsion du Schéma Directeur d’Aménagement et d’Urbanisme de la Région Parisienne de 1965 qui prévoyait la création de 5 villes nouvelles à la périphérie de Paris, Marne-la-Vallée, la plus grande des ville-nouvelles (elle regroupe 26 communes, sur trois départements) doit sa naissance à la volonté d’un pouvoir central, délimitant un périmètre qui englobe d’un trait aussi bien d’anciens bourgs que des forêts, des terres agricoles, des parcs historiques… Prenant sa source dans des réflexions nées au XIXe siècle, les villes nouvelles ont été influencé par différents modèles (le courant naturaliste, le mouvement moderne…). Mais si la ville nouvelle a servi de terrain d’expérimentations de nouvelles conceptions urbanistiques, les grandes structures paysagères de ce secteur présentent aussi une continuité historique remarquable. Le secteur 2, le Val-Maubuée, sur lequel s’appuie la présentation, constitue un territoire original, conçus dès les années 70. L’apport des paysagistes a été déterminant pour façonner la physionomie de cette partie de Marne-la-Vallée en introduisant une certaine idée de l’aménagement urbain. Etudier ce territoire dans une profondeur historique permet ainsi de le replacer dans le courant des utopies urbaines et paysagères qui avaient déjà fortement marqué cet espace. La ville nouvelle s’inscrit ainsi dans une poursuite de la recherche d’un idéal de la nature au service de la ville, héritier de l’histoire de la pensée urbaine et de sa traduction paysagère.
Enrichment and Pre-Heating in Intragroup Gas from Galactic Outflows
Creators: name: Davé, Romeel
name: Oppenheimer, Benjamin D.
name: Sivanandam, Suresh
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine metal and entropy content in galaxy groups having T_X~0.5-2 keV in cosmological hydrodynamic simulations. Our simulations include a well-constrained prescription for galactic outflows following momentum-driven wind scalings, and a sophisticated chemical evolution model. Our simulation with no outflows reproduces observed iron abundances in X-ray emitting gas, but the oxygen abundance is too low; including outflows yields iron and oxygen abundances in good agreement with data. X-ray measures of [O/Fe] primarily reflect metal distribution mechanisms into hot gas, not the ratio of Type Ia to Type II supernovae within the group. Iron abundance increases by x2 from z=1-0 independent of group size, consistent with that seen in clusters, while [O/Fe] drops by ~30%. Core entropy versus temperature is elevated over self-similar predictions regardless of outflows due to radiative cooling removing low-entropy gas, but outflows provide an additional entropy contribution below 1 keV. This results in a noticeable break in the L_X-T_X relation below 1 keV, as observed. Importantly, outflows serve to reduce the stellar content of groups to observed levels. Radial profiles from simulations are in broad agreement with observations, but there remain non-trivial discrepancies that may reflect an excess of late-time star formation in central group galaxies in our simulations. Our model with outflows suggests a connection between physical processes of galaxy formation and both pre-heating and enrichment in intragroup gas, though more definitive conclusions must await a model that simultaneously suppresses cooling flows as observed.
description: 16 pages, MNRAS, accepted version
Finding Significant Features for Few-Shot Learning using Dimensionality Reduction
Creators: name: Mendez-Ruiz, Mauricio
name: Gonzalez-Zapata, Ivan Garcia Jorge
name: Ochoa-Ruiz, Gilberto
name: Mendez-Vazquez, Andres
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Few-shot learning is a relatively new technique that specializes in problems where we have little amounts of data. The goal of these methods is to classify categories that have not been seen before with just a handful of samples. Recent approaches, such as metric learning, adopt the meta-learning strategy in which we have episodic tasks conformed by support (training) data and query (test) data. Metric learning methods have demonstrated that simple models can achieve good performance by learning a similarity function to compare the support and the query data. However, the feature space learned by a given metric learning approach may not exploit the information given by a specific few-shot task. In this work, we explore the use of dimension reduction techniques as a way to find task-significant features helping to make better predictions. We measure the performance of the reduced features by assigning a score based on the intra-class and inter-class distance, and selecting a feature reduction method in which instances of different classes are far away and instances of the same class are close. This module helps to improve the accuracy performance by allowing the similarity function, given by the metric learning method, to have more discriminative features for the classification. Our method outperforms the metric learning baselines in the miniImageNet dataset by around 2% in accuracy performance.
description: This paper is currently under review for the Mexican International Conference on Artificial Intelligence (MICAI) 2021
Temps de discussion 1
Creators: name: Collectif IGP
Publisher: name: Collectif Inventer le Grand Paris
Year: 2018

description: Laurent Coudroy de Lille À propos de Marne la vallée. Il y a actuellement une forte pression pour densifier la ville nouvelle afin d’ éviter l’étalement urbain. Cela n’amène-t-il pas à poser à nouveau la question de l’avant-garde dans l’aménagement urbain et paysager que la ville nouvelle de Marne-la-Vallée a pu représenter à un moment donné ? À propos du plan Prost et du contexte des années 1930, celui de la déploration du saccage des paysages de la région parisienne. Comment peut-on l’articuler avec les dispositions du plan Prost ? Dans cette séance nous allons surtout parler du paysage des...
Magnetic and electronic Co states in layered cobaltate GdBaCo2O5.5-x
Creators: name: Garcia-Fernandez, M.
name: Scagnoli, V.
name: Staub, U.
name: Mulders, A. M.
name: Janousch, M.
name: Bodenthin, Y.
name: Meister, D.
name: Patterson, B. D.
name: Mirone, A.
name: Tanaka, Y.
name: Nakamura, T.
name: Grenier, S.
name: Huang, Y.
name: Conder, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have performed non-resonant x-ray diffraction, resonant soft and hard x-ray magnetic diffraction, soft x-ray absorption and x-ray magnetic circular dichroism measurements to clarify the electronic and magnetic states of the Co3+ ions in GdBaCo2O5.5. Our data are consistent with a 3+ Py Co HS state at the pyramidal sites and a 3+ Oc Co LS state at the octahedral sites. The structural distortion, with a doubling of the a axis (2ap x 2ap x 2ap cell), shows alternating elongations and contractions of the pyramids and indicates that the metal-insulator transition is associated with orbital order in the t2g orbitals of the 3+ Py Co HS state. This distortion corresponds to an alternating ordering of xz and yz orbitals along the a and c axes for the 3+ Py Co . The orbital ordering and pyramidal distortion lead to deformation of the octahedra, but the 3+ Oc Co LS state does not allow an orbital order to occur for the 3+ Oc Co ions. The soft x-ray magnetic diffraction results indicate that the magnetic moments are aligned in the ab plane but are not parallel to the crystallographic a or b axes. The orbital order and the doubling of the magnetic unit cell along the c axis support a non-collinear magnetic structure. The x-ray magnetic circular dichroism data indicate that there is a large orbital magnetic contribution to the total ordered Co moment.
Asymptotic expansion and central limit theorem for quadratic variations of Gaussian processes
Creators: name: Begyn, Arnaud
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: Cohen, Guyon, Perrin and Pontier have given assumptions under which the second-order quadratic variations of a Gaussian process converge almost surely to a deterministic limit. In this paper we present two new convergence results about these variations: the first is a deterministic asymptotic expansion; the second is a central limit theorem. Next we apply these results to identify two-parameter fractional Brownian motion and anisotropic fractional Brownian motion.
description: Published at http://dx.doi.org/10.3150/07-BEJ5112 in the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
A Random Matrix Study of the QCD Sign Problem
Creators: name: Han, J.
name: Stephanov, M. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the severity of the sign problem in a random matrix model for QCD at finite temperature T and baryon chemical potential mu. We obtain analytic expression for the average phase factor -- the measure of the severity of the sign problem at arbitrary T and mu. We observe that the sign problem becomes less severe as the temperature is increased. We also find the domain where the sign problem is maximal -- the average phase factor is zero, which is related to the pion condensation phase in the QCD with finite isospin chemical potential. We find that, in the matrix model we studied, the critical point is located inside the domain of the maximal sign problem, making the point inaccessible to conventional reweighting techniques. We observe and describe the scaling behavior of the size and shape of the pion condensation near the chiral limit.
description: 16 pages, 3 figures
A GPU based single-pulse search pipeline (GSP) with database and its application to the commensal radio astronomy FAST survey (CRAFTS)
Creators: name: You, Shanping
name: Wang, Pei
name: Yu, Xuhong
name: Xie, Xiaoyao
name: Li, Di
name: Liu, Zhijie
name: Pan, Zhichen
name: Yue, Youling
name: Qian, Lei
name: Zhang, Bin
name: Chen, Zonghao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We developed a GPU based single-pulse search pipeline (GSP) with candidate-archiving database. Largely based upon the infrastructure of Open source pulsar search and analysis toolkit (PRESTO), GSP implements GPU acceleration of the de-dispersion and integrates a candidate-archiving database. We applied GSP to the data streams from the commensal radio astronomy FAST survey (CRAFTS), which resulted in a quasi-real-time processing. The integrated candidate database facilitates synergistic usage of multiple machine-learning tools and thus improves efficient identification of radio pulsars such as rotating radio transients (RRATs) and Fast Radio Bursts (FRBs). We first tested GSP on pilot CRAFTS observations with the FAST Ultra-Wide Band (UWB) receiver. GSP detected all pulsars known from the the Parkes multibeam pulsar survey in the respective sky area covered by the FAST-UWB. GSP also discovered 13 new pulsars. We measured the computational efficiency of GSP to be ~120 times faster than the original PRESTO and ~60 times faster than a MPI-parallelized version of PRESTO.
Relations among modular points on elliptic curves
Creators: name: Buium, Alexandru
name: Poonen, Bjorn
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G18, 14G20

description: Given a correspondence between a modular curve and an elliptic curve A we study the group of relations among the CM points of A. In particular we prove that the intersection of any finite rank subgroup of A with the set of CM points of A is finite. We also prove a local version of this global result with an effective bound valid also for certain infinite rank subgroups. We deduce the local result from a ``reciprocity'' theorem for CL (canonical lift) points on A. Furthermore we prove similar global and local results for intersections between subgroups of A and isogeny classes in A. Finally we prove Shimura curve analogues and, in some cases, higher-dimensional versions of these results.
description: 48 pages
Evolving winning strategies for Nim-like games
Creators: name: Oltean, Mihai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: An evolutionary approach for computing the winning strategy for Nim-like games is proposed in this paper. The winning strategy is computed by using the Multi Expression Programming (MEP) technique - a fast and efficient variant of the Genetic Programming (GP). Each play strategy is represented by a mathematical expression that contains mathematical operators (such as +, -, *, mod, div, and , or, xor, not) and operands (encoding the current game state). Several numerical experiments for computing the winning strategy for the Nim game are performed. The computational effort needed for evolving a winning strategy is reported. The results show that the proposed evolutionary approach is very suitable for computing the winning strategy for Nim-like games.
description: 9 pages
General Sum Rules for WW Scattering in Higgsless Models: Equivalence Theorem and Deconstruction Identities
Creators: name: Chivukula, R. Sekhar
name: He, Hong-Jian
name: Kurachi, Masafumi
name: Simmons, Elizabeth H.
name: Tanabashi, Masaharu
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze inelastic 2 to 2 scattering amplitudes for gauge bosons and Nambu-Goldstone bosons in deconstructed Higgsless models. Using the (KK) Equivalence Theorem in 4D (5D), we derive a set of general sum rules among the boson masses and multi-boson couplings that are valid for arbitrary deconstructed models. Taking the continuum limit, our results naturally include the 5D Higgsless model sum rules for arbitrary 5D geometry and boundary conditions; they also reduce to the elastic sum rules when applied to the special case of elastic scattering. For the case of linear deconstructed Higgsless models, we demonstrate that the sum rules can also be derived from a set of general deconstruction identities and completeness relations. We apply these sum rules to the deconstructed 3-site Higgsless model and its extensions; we show that in 5D ignoring all higher KK modes (n>1) is inconsistent once the inelastic channels become important. Finally, we discuss how our results generalize beyond the case of linear Higgsless models.
description: 36 pages, 2 figures
Evolving Evolutionary Algorithms using Linear Genetic Programming
Creators: name: Oltean, Mihai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: A new model for evolving Evolutionary Algorithms is proposed in this paper. The model is based on the Linear Genetic Programming (LGP) technique. Every LGP chromosome encodes an EA which is used for solving a particular problem. Several Evolutionary Algorithms for function optimization, the Traveling Salesman Problem, and the Quadratic Assignment Problem are evolved by using the considered model. Numerical experiments show that the evolved Evolutionary Algorithms perform similarly and sometimes even better than standard approaches for several well-known benchmarking problems.
description: 23 pages, 3 figures
BIOREGULATORY CORRECTION IN THE COMPLEX TREATMENT OF ACUTE PURULENT PERIOSTITIS OF THE LOWER JAW. CLINICAL CASE
Creators: name: Zhaldak, Maksym
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 320299
subject: Clinical sciences not elsewhere classified

description: Odontogenic inflammatory diseases occupy a significant place among the pathologies of the maxillofacial area, reaching up to 75% of cases. They often aggravate the course of major dental diseases, especially in patients with chronic somatic diseases such as diabetes mellitus. Acute purulent periostitis is one of the most common inflammatory processes that requires an integrated approach to treatment.Objective: To evaluate the effectiveness of the complex treatment of acute purulent odontogenic periostitis of the mandible using bioregulatory drugs Traumel C and Lymphomiosot N.Materials and methods: We describe the clinical case of a 72-year-old female patient with acute purulent periostitis of the mandible in the setting of insulin-dependent diabetes mellitus. The treatment included surgical intervention (tooth extraction, periostotomy, drainage), as well as injection of bioregulatory medications in the postoperative period.Results: The use of bioregulatory therapy contributed to a rapid relief of pain, edema and accelerated healing without the development of complications. There was an improvement in local and overall recovery rates, indicating a positive effect of the medications on the inflammatory process, drainage of purulent exudate and reparative processes.Conclusions: The use of bioregulatory medications in the complex treatment of acute purulent odontogenic processes can increase the effectiveness of therapy, help reduce the healing time and minimize the risk of complications. However, further studies are needed to confirm the effectiveness of this approach.
Low-Rank Temporal Attention-Augmented Bilinear Network for financial time-series forecasting
Creators: name: Shabani, Mostafa
name: Iosifidis, Alexandros
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Financial market analysis, especially the prediction of movements of stock prices, is a challenging problem. The nature of financial time-series data, being non-stationary and nonlinear, is the main cause of these challenges. Deep learning models have led to significant performance improvements in many problems coming from different domains, including prediction problems of financial time-series data. Although the prediction performance is the main goal of such models, dealing with ultra high-frequency data sets restrictions in terms of the number of model parameters and its inference speed. The Temporal Attention-Augmented Bilinear network was recently proposed as an efficient and high-performing model for Limit Order Book time-series forecasting. In this paper, we propose a low-rank tensor approximation of the model to further reduce the number of trainable parameters and increase its speed.
Molecular hydrogen adsorbed on benzene: insights from a quantum Monte Carlo study
Creators: name: Beaudet, Todd D.
name: Casula, Michele
name: Kim, Jeongnim
name: Sorella, Sandro
name: Martin, Richard M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a quantum Monte Carlo study of the hydrogen-benzene system where binding is very weak. We demonstrate that the binding is well described at both variational Monte Carlo (VMC) and diffusion Monte Carlo (DMC) levels by a Jastrow correlated single determinant geminal wave function with an optimized compact basis set that includes diffuse orbitals. Agreement between VMC and fixed-node DMC binding energies is found to be within 0.18 mHa, suggesting the calculations are well-converged with respect to the basis. Essentially the same binding is also found in independent DMC calculations using a different trial wave function of a more conventional Slater-Jastrow form, supporting our conclusion that the binding energy is accurate and includes all effects of correlation. We compare with empirical models and previous calculations, and we discuss the physical mechanisms of the interaction, the role of diffuse basis functions, and the charge redistribution in the bond.
description: 12 pages, 4 figures
Probing Upflowing Regions in the Quiet Sun and Coronal Holes
Creators: name: Schwanitz, Conrad
name: Harra, Louise
name: Raouafi, Nour E.
name: Sterling, Alphonse C.
name: Vacas, Alejandro Moreno
name: Iniesta, Jose Carlos del Toro
name: Suárez, David Orozco
name: Hara, Hirohisa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent observations from Parker Solar Probe have revealed that the solar wind has a highly variable structure. How this complex behaviour is formed in the solar corona is not yet known, since it requires omnipresent fluctuations, which constantly emit material to feed the wind. In this article we analysed 14 upflow regions in the solar corona to find potential sources for plasma flow. The upflow regions were derived from spectroscopic data from the EUV Imaging Spectrometer (EIS) onboard Hinode determining their Doppler velocity and defining regions which have blueshifts stronger than $-6\,km\,s^{-1}$. To identify the sources of this blueshift data from the Atmospheric Imaging Assembly (AIA) and the Helioseismic and Magnetic Imager (HMI), onboard the Solar Dynamics Observatory (SDO), and the X-ray Telescope (XRT), onboard Hinode, were used. The analysis revealed that only 5 out of 14 of the upflows were associated with frequent transients, like obvious jets or bright points. In contrast to that, seven events were associated with small-scale features, which show a large variety of dynamics. Some resemble small bright points, while others show an eruptive nature, all of which are faint and only live for a few minutes; we can not rule out that several of these sources may be fainter and, hence, less obvious jets. Since the complex structure of the solar wind is known, this suggests that new sources have to be considered or better methods used to analyse the known sources. This work shows that small and frequent features, which were previously neglected, can cause strong upflows in the solar corona. These results emphasise the importance of the first observations from the Extreme-Ultraviolet Imager (EUI) onboard Solar Orbiter, which revealed complex small-scale coronal structures.
พฤติกรรมการประหยัดพลังงานไฟฟ้าของนักศึกษามหาวิทยาลัยเทคโนโลยีราชมงคล
Creators: name: ไพฑูรย์  พิมดี
Publisher: name: สถาบันเทคโนโลยีพระจอมเกล้าเจ้าคุณทหารลาดกระบัง
Year: 2008
Subjects: พลังงานไฟฟ้า, การประหยัดพลังงานไฟฟ้า, มหาวิทยาลัยเทคโนโลยีราชมงคล

description: 2, 2, วารสารวิชาการและวิจัย มทร.พระนคร
Properties of Fly Ash-based Geopolymer Mortar: Influence of Fly Ash Sources and Sodium Silicate (Na2SiO3) / Sodium Hydroxide (NaOH) Ratios
Creators: name: Natt Makul
name: Burachat Chatveera
Publisher: name: King Mongkut's Univesity of Technology Thonburi
Year: 2013
Subjects: Curing, Fly ash, Geopolymer mortar, Microwave energy

description: 1, 36, วารสารวิจัยและพัฒนา มจธ.
Experiência Interdisciplinar e Transdisciplinar num Curso de Licenciatura  em Educação Física a Distância
Creators: name: Jônatas De França Barros
name: Antônio De Pádua Dos Santos
name: Coquerel, Patrick Ramon Stafin
name: Silva, André Ribeiro Da
Publisher: name: Zenodo
Year: 2016

description: O presente estudo teve como objetivo geral relatar uma experiência didática e pedagógica interdisciplinar e transdisciplinar realizada no ano de 2015, num Curso de Licenciatura em Educação Física na modalidade a distância. Foi desenvolvida uma abordagem qualitativa de pesquisa, uma pesquisa-ação com os participantes do Curso, incluindo Coordenação do Curso, Coordenação de Tutoria, Professores, Tutores Presenciais e a Distância e, sobretudo, estudantes, que participaram desta experiência, num total de 422 envolvidos que compuseram a amostragem. O resultado revelou que a experiência didática e pedagógica foi muito exitosa, apesar de ter contado com um número inexpressível de participantes no evento de avaliação final do semestre letivo. A qualidade das experiências de ensino, pesquisa e extensão foram muitíssimo positivas, desenvolvendo-se uma estratégia muito promissora de gestão do ensino e aprendizagem do respectivo Curso.
Can You See Me Now? A Measurement Study of Zoom, Webex, and Meet
Creators: name: Chang, Hyunseok
name: Varvello, Matteo
name: Hao, Fang
name: Mukherjee, Sarit
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Since the outbreak of the COVID-19 pandemic, videoconferencing has become the default mode of communication in our daily lives at homes, workplaces and schools, and it is likely to remain an important part of our lives in the post-pandemic world. Despite its significance, there has not been any systematic study characterizing the user-perceived performance of existing videoconferencing systems other than anecdotal reports. In this paper, we present a detailed measurement study that compares three major videoconferencing systems: Zoom, Webex and Google Meet. Our study is based on 48 hours' worth of more than 700 videoconferencing sessions, which were created with a mix of emulated videoconferencing clients deployed in the cloud, as well as real mobile devices running from a residential network. We find that the existing videoconferencing systems vary in terms of geographic scope, which in turns determines streaming lag experienced by users. We also observe that streaming rate can change under different conditions (e.g., number of users in a session, mobile device status, etc), which affects user-perceived streaming quality. Beyond these findings, our measurement methodology can enable reproducible benchmark analysis for any types of comparative or longitudinal study on available videoconferencing systems.
description: Accepted to ACM Internet Measurement Conference 2021, 13 pages, 19 figures
Additional file 1 of Long-term radiographic outcomes and functional evaluation of ulnar shortening osteotomy in patients with ulnar impaction syndrome and reverse oblique sigmoid notch: a retrospective case series study
Creators: name: Hui-Kuang Huang
name: Lee, Steve K.
name: Huang, Yi-Chao
name: Yin, Cheng-Yu
name: Ming-Chau Chang
name: Jung-Pan Wang
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Neuroscience
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. Checklist of STROBE criteria.
On idempotent states on quantum groups
Creators: name: Franz, Uwe
name: Skalski, Adam
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Algebra (math.QA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 16W30 (Primary) 60B15 (Secondary)

description: Idempotent states on a compact quantum group are shown to yield group-like projections in the multiplier algebra of the dual discrete quantum group. This allows to deduce that every idempotent state on a finite quantum group arises in a canonical way as the Haar state on a finite quantum hypergroup. A natural order structure on the set of idempotent states is also studied and some examples discussed.
description: 28 pages; v3 omits the former lemma 2.1 due to a gap in the proof. This does not affect any other results. The paper will appear in the Journal of Algebra
Roles of juvenile hormone in the green peach aphid, myzus persicae sulzer (homoptera: aphididae)
Creators: name: Verma, Kulbhushan
Publisher: name: University of British Columbia
Year: 2010

description: The role of juvenile hormone (JH) in alate-apterous polymorphism was investigated in the green peach aphid, Myzus persicae. At higher concentrations (65 ppm), the juvenile hormone analogue (JHA), kinoprene, was immediately toxic to apteriform nymphs. At lower concentrations (10 ppm), the compound was non-toxic and exhibited no apparent morphological activity in apteriform stages. In contrast, 65 ppm kinoprene administered to alatiform nymphs had juvenilizing and apterizing effects. The extent of these effects depended upon when the kinoprene was applied. Fourth instar alatiforms were the least sensitive as kinoprene-treated nymphs developed into normal adults with reduced sclerotization and pigmentation. Kinoprene-treated third instars underwent a supernumerary moult before metamorphosing into adults with malformed wings. Sclerotization and pigmentation were also lacking in these insects. When first and second instar alatiformsiwere treated with kinoprene, they also underwent a supernumerary moult. The adults which emerged exhibited both larval and apterous characteristics. Wing development was almost totally inhibited; the cauda and genital plate were poorly developed. In addition, sclerotization and pigmentation were reduced and ocell lacking. The secondary antennal sensoria were also malformed. These findings clearly (1) demonstrate that kinoprene can be employed as a JH mimic to alter the normal programming of the epidermal cells in alatiform nymphs and (2) indicate that JH plays an important role in aphid morphogenesis and polymorphism. The differential responses of the four alatiform nymphal instars suggest that elevated JH levels during the first and second instars are particularly important in inhibiting wing development. To determine the prenatal effects of JH on wing development and morphogenesis, kinoprene was also administered to newly ecdysed apterous adults. Even though conditions favoured alate production, 75% of the offspring produced by kinoprene-treated virginoparae developed into normal apterae. This suggests that elevated JH titers in maternal haemolymph inhibit wing development and promote development of apterae. Topical application of the anti-allatotropin, precocene-II, had variable effects on apteriform nymphs and adults. In all stages, precocene produced a significant decline in larvi-position. The effects were more pronounced in first and second instar apteriform nymphs and apterous adults than in third and fourth instar nymphs. When kinoprene was applied to these insects, larviposition increased significantly after 2 days. The findings demonstrate that JH stimulates reproduction in viviparous morphs of persicae.
Pulse-Bandwidth Dependence of Coherent Phase Control of Resonance-Mediated (2+1) Three-Photon Absorption
Creators: name: Gandman, Andrey
name: Chuntonov, Lev
name: Rybak, Leonid
name: Amitay, Zohar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We study in detail coherent phase control of femtosecond resonance-mediated (2+1) three-photon absorption and its dependence on the spectral bandwidth of the excitation pulse. The regime is the weak-field regime of third perturbative order. The corresponding interference mechanism involves a group of three-photon excitation pathways that are on resonance with the intermediate state and a group of three-photon excitation pathways that are near resonant with it. The model system of the study is atomic sodium (Na), for which experimental and numerical-theoretical results are obtained. Prominent among the results is our finding that with simple proper pulse shaping an increase in the excitation bandwidth leads to a corresponding increase in the enhancement of the three-photon absorption over the absorption induced by the (unshaped) transform-limited pulse. For example, here, a 40-nm bandwidth leads to an order-of-magnitude enhancement over the transform-limited absorption.
description: 23 pages, 5 figures
Isochrone fitting of Galactic globular clusters -- III. NGC\,288, NGC\,362, and NGC\,6218 (M12)
Creators: name: Gontcharov, George A.
name: Khovritchev, Maxim Yu.
name: Mosenkov, Aleksandr V.
name: Il'in, Vladimir B.
name: Marchuk, Alexander A.
name: Savchenko, Sergey S.
name: Smirnov, Anton A.
name: Usachev, Pavel A.
name: Poliakov, Denis M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present new isochrone fits to colour-magnitude diagrams of the Galactic globular clusters NGC\,288, NGC\,362, and NGC\,6218 (M12). We utilize a lot of photometric bands from the ultraviolet to mid-infrared by use of data from the {\it HST}, {\it Gaia}, unWISE, Pan-STARRS, and other photometric sources. In our isochrone fitting we use theoretical models and isochrones from the Dartmouth Stellar Evolution Program and Bag of Stellar Tracks and Isochrones for $α$-enhanced abundance [$α$/Fe]$=+0.40$, different helium abundances, and a metallicity of about [Fe/H]$=-1.3$ adopted from the literature. We derive the most probable distances $8.96\pm0.05$, $8.98\pm0.06$, and $5.04\pm0.05$ kpc, ages $13.5\pm1.1$, $11.0\pm0.6$, and $13.8\pm1.1$ Gyr, extinctions $A_\mathrm{V}=0.08\pm0.03$, $0.11\pm0.04$, and $0.63\pm0.03$ mag, and reddenings $E(B-V)=0.014\pm0.010$, $0.028\pm0.011$, and $0.189\pm0.010$ mag for NGC\,288, NGC\,362, and NGC\,6218, respectively. The distance estimates from the different models are consistent, while those of age, extinction, and reddening are not. The uncertainties of age, extinction, and reddening are dominated by some intrinsic systematic differences between the models. However, the models agree in their relative age estimates: NGC\,362 is $2.6\pm0.5$ Gyr younger than NGC\,288 and $2.8\pm0.5$ Gyr younger than NGC\,6218, confirming age as the second parameter for these clusters. We provide reliable lists of the cluster members and precise cluster proper motions from the {\it Gaia} Early Data Release 3.
description: 19 pages, 16 figures, accepted to MNRAS
BIOREGULATORY CORRECTION IN THE COMPLEX TREATMENT OF ACUTE PURULENT PERIOSTITIS OF THE LOWER JAW. CLINICAL CASE
Creators: name: Zhaldak, Maksim
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 320299
subject: Clinical sciences not elsewhere classified

description: Odontogenic inflammatory diseases occupy a significant place among the pathologies of the maxillofacial area, reaching up to 75% of cases. They often aggravate the course of major dental diseases, especially in patients with chronic somatic diseases such as diabetes mellitus. Acute purulent periostitis is one of the most common inflammatory processes that requires an integrated approach to treatment.Objective: To evaluate the effectiveness of the complex treatment of acute purulent odontogenic periostitis of the mandible using bioregulatory drugs Traumel C and Lymphomiosot N.Materials and methods: We describe the clinical case of a 72-year-old female patient with acute purulent periostitis of the mandible in the setting of insulin-dependent diabetes mellitus. The treatment included surgical intervention (tooth extraction, periostotomy, drainage), as well as injection of bioregulatory medications in the postoperative period.Results: The use of bioregulatory therapy contributed to a rapid relief of pain, edema and accelerated healing without the development of complications. There was an improvement in local and overall recovery rates, indicating a positive effect of the medications on the inflammatory process, drainage of purulent exudate and reparative processes.Conclusions: The use of bioregulatory medications in the complex treatment of acute purulent odontogenic processes can increase the effectiveness of therapy, help reduce the healing time and minimize the risk of complications. However, further studies are needed to confirm the effectiveness of this approach.
Classification of epilithic bryophyte communities in south-western British Columbia
Creators: name: Velzen, Johannes Petrus Van
Publisher: name: University of British Columbia
Year: 2010

description: The present study attempts to classify the epilithic (=growing on rock) bryophyte vegetation of south-western British Columbia, Canada. During the summer field season of 1980 around 350 releves (=samples) were taken of bryophyte assemblages from rocky habitats that ranged in elevation from sea level to subalpine and alpine areas. Small scale variation was expressed in the segregation of various types of micro-environments on rocks, all characterized by their own bryophyte vegetation. On a larger scale, the releves of these epilithic bryophyte assemblages were divided into four major groups: (1) exposed, dry rocks (2) shaded, humid rocks (3) siliceous rocks along streams and (4) calcareous rocks. Within these major groups cluster analyses and tabular sorting, combined, were utilized to detect patterns in the data set. The subsequent recognition of groups of similar releves formed the basis for the segregation of separate vegetation units (syntaxa). These syntaxa were defined by diagnostic species (character and differential species) and further characterized by micro-site specificity of species and/or communities and their geographic distribution throughout the study area. Comparison to and integration in already existing classification schemes was attempted. In particular, floristic and sociological affinities assigned to the epilithic bryophyte associations in south western British Columbia were related to those in Europe. Where necessary and appropriate, new syntaxa were distinguished and defined. Finally, the application of ordination techniques, although limited in the present study, was utilized as an additional means to display and interpret patterns in the data set. The prior classification, paralleled with field data on ecological site characteristics, already showed some relationship between releves. This provided a basis for interpreting the ordinations, which, in turn, further expressed and clarified relationships of releves to one another and to the environment.
Simulation and Analysis of Energy Consumption for an Energy-Intensive Academic Research Building
Creators: name: Levy, Jared Michael
Publisher: name: Digital Repository at the University of Maryland
Year: 2014
Subjects: subject: Engineering
subject: Mechanical engineering
subject: FOS: Mechanical engineering
subject: Building
subject: FOS: Civil engineering
subject: Cleanroom
subject: Energy
subject: Modeling
subject: Simulation

description: The University of Maryland's Jeong H. Kim Engineering Building is a state-of-the-art academic research facility. This thesis describes an energy analysis and simulation study that serves to identify energy saving opportunities and optimum operation of the building to achieve its goals of high energy efficiency and substantial CO2 emission reduction. A utility analysis, including a benchmarking study, was completed to gauge the performance of the facility and a detailed energy model was developed using EnergyPlus to mimic current operation. The baseline energy model was then used to simulate eight energy efficiency measures for a combined energy savings of 16,760 MMBtu, reducing annual energy use by 25.3%. The simple payback period for the proposed measures as a single project is estimated to be less than one year. Due to the high-tech and unique usage of the Kim Engineering Building, including cleanrooms and research labs, this thesis also contributes to the development of energy consumption benchmarking data available for such facilities.
A feedback compression star formation model and the black hole - bulge relations
Creators: name: Xu, Bing-Xiao
name: Wu, Xue-Bing
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a "feedback compression" model to describe the galactic spheroid formation and its relation with the central nuclear activity. We suggest that the star formation itself can serve as the "positive feedback" in some extremely dense region to trigger the starburst. The star formation rate as well as the related stellar feedback-induced turbulence will be maximized under the regulation of the background dark halo's gravity. There is also stellar feedback acting inward to confine and obscure the central black hole (BH) till the BH grows sufficiently large to satisfy a balance condition between the accretion disk wind and the inward stellar feedback. The extremely vigorous star formation activity, the BH - bulge relations, the maximum velocity dispersion as well as the maximum BH mass are investigated based on such scenario, and are found to be consistent with observations.
description: 13 pages, accepted for publication in ApJ