cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Friction of the micron-scale silica under various behaviors of the shape and the orientation of the coarse-grained particle in adaptive smoothed particle hydrodynamics
Creators: name: Van Sang, Le
name: Sugimura, Natsuko
name: Washizu, Hitoshi
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The paper investigates dry sliding friction of the coarse-grained micronscale α-SiO2 oxide. Adaptive smoothed particle approach is used to consider various shapes and orientations of the particles. It is found that because of the stable system the friction characteristics almost do not depend on the shape and the orientation of the particle. The friction coefficient of 0.1376 observed in the present work is in accordance with that found in previously experimental reports. The friction coefficient steady maintains in the applied load range of 5-80 μN, showing a very slightly linear drop from 0.1379 to 0.1341 in this load range. This observation is also consistent with the applied load-friction coefficient relationship mentioned in previously experimental studies.
Application of a Modified Harmony Search Algorithm in the Optimal Arrangement of a Novel Three Dimensional Multiphase Flow Imaging Device
Creators: name: Wang, Haihang
name: Xu, He
name: Gao, Xiaozhi
name: Zhao, Zitong
name: Huang, Jinwei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Gas-liquid two-phase flow is a typical flow, and bubble characteristic measurement is of great importance to study the flow mechanism and guide the practical fluid mechanical engineering. In this paper, a novel three dimensional (3D) multiphase flow imaging device was designed to measure the transparent object that has an opaque object in the center of the observed area. Its mathematical model was built and the constraints were defined based on the geometrical relationship and design requirements. A modified harmony search (HS) algorithm was integrated and applied to optimize the arrangement of the single-camera-multi-mirror device. As a case study, the 3D multiphase flow imaging method was applied in the the 3D reconstruction of the cavitation bubble cluster inside a water hydraulic valve. The statistics of the Pareto data shows the good performance of the modified HS algorithm. And the cavitation experimental results shows that the method is valid, and the cavitation bubble cluster can be reconstructed with quite high precision.
description: 27 pages, 12 figures
Response of īnanga spawning habitat to riparian vegetation management
Creators: name: Orchard, Shane
Publisher: name: figshare
Year: 2017
Subjects: subject: 120504 Land Use and Environmental Planning
subject: FOS: Social and economic geography
subject: 120501 Community Planning
subject: 50202 Conservation and Biodiversity
subject: FOS: Biological sciences
subject: 50204 Environmental Impact Assessment
subject: FOS: Earth and related environmental sciences
subject: 50205 Environmental Management

description: Results from CCC's riparian management trial over summer 2017. The objective was to improve protection of īnanga (fish) spawning habitat in Christchurch's waterways.
Peculiar velocities in redshift space: formalism, N-body simulations and perturbation theory
Creators: name: Okumura, Teppei
name: Seljak, Uros
name: Vlah, Zvonimir
name: Desjacques, Vincent
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Direct measurements of peculiar velocities of galaxies and clusters of galaxies can in principle provide explicit information on the three dimensional mass distribution, but this information is modulated by the fact that velocity field is sampled at galaxy positions, and is thus probing galaxy momentum. We derive expressions for the cross power spectrum between the density and momentum field and the auto spectrum of the momentum field in redshift space, by extending the distribution function method to these statistics. The resulting momentum cross and auto power spectra in redshift space are expressed as infinite sums over velocity moment correlators in real space, as is the case for the density power spectrum in redshift space. We compute each correlator using Eulerian perturbation theory (PT) and halo biasing model and compare the resulting redshift-space velocity statistics to those measured from N-body simulations for both dark matter and halos. We find that in redshift space linear theory predictions for the density-momentum cross power spectrum as well as for the momentum auto spectrum fail to predict the N-body results at very large scales. On the other hand, our nonlinear PT prediction for these velocity statistics, together with real-space power spectrum for dark matter from simulations, improves the accuracy for both dark matter and halos. We also present the same analysis in configuration space, computing the redshift-space pairwise mean infall velocities and velocity correlation function and compare to nonlinear PT.
description: 40 pages, 29 figures, published in JCAP
Evolution of Precursory Seismic Quiescence of the Mw-6.8 Nam Ma Earthquake, Thailand-Myanmar Borders
Creators: name: Prayot Puangjaktha
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2016
Subjects: Earthquake Catalogue
Precursory Seismic Quiescence
RTL Algorithm
Earthquake Forecasting
Thailand-Myanmar Borders.

description: Bulletin of Earth Sciences of Thailand (BEST), 8, 1, 15-Jan
Seismicity Change Prior to Major Earthquakesof the SumatraAndaman Subduction Zone
Implication for Tectonic Regime
Creators: name: Santawat Sukrungsri
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2016
Subjects: Earthquake Catalogue
Seismic Quiescence
RTL Algorithm
Interplate
Intraplate
SumatraAndaman Subduction Zone.

description: Bulletin of Earth Sciences of Thailand (BEST), 8, 1, 16-24
Paleoearthquakes along Xaignabouli Fault Zone in Western Lao PDR
Creators: name: Patchawee Nualkhao
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2016
Subjects: Active fault, Lao, OSL dating, Paleoearthquake, Paleoseismicity, Xaignabouri

description: Bulletin of Earth Sciences of Thailand (BEST), 8, 1, 25-32
Projection-based reduced order models for a cut finite element method in parametrized domains
Creators: name: Karatzas, Efthymios N.
name: Ballarin, Francesco
name: Rozza, Gianluigi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 78M34, 97N40, 35Q35

description: This work presents a reduced order modelling technique built on a high fidelity embedded mesh finite element method. Such methods, and in particular the CutFEM method, are attractive in the generation of projection-based reduced order models thanks to their capabilities to seamlessly handle large deformations of parametrized domains. The combination of embedded methods and reduced order models allows us to obtain fast evaluation of parametrized problems, avoiding remeshing as well as the reference domain formulation, often used in the reduced order modelling for boundary fitted finite element formulations. The resulting novel methodology is presented on linear elliptic and Stokes problems, together with several test cases to assess its capability. The role of a proper extension and transport of embedded solutions to a common background is analyzed in detail.
Limitations of polynomial chaos expansions in the Bayesian solution of inverse problems
Creators: name: Lu, Fei
name: Morzfeld, Matthias
name: Tu, Xuemin
name: Chorin, Alexandre J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Numerical Analysis (math.NA)
subject: Computation (stat.CO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Polynomial chaos expansions are used to reduce the computational cost in the Bayesian solutions of inverse problems by creating a surrogate posterior that can be evaluated inexpensively. We show, by analysis and example, that when the data contain significant information beyond what is assumed in the prior, the surrogate posterior can be very different from the posterior, and the resulting estimates become inaccurate. One can improve the accuracy by adaptively increasing the order of the polynomial chaos, but the cost may increase too fast for this to be cost effective compared to Monte Carlo sampling without a surrogate posterior.
Additional file 1 of Do they really boil their drinking water? a descriptive study in a rural district of the Lao people’s democratic republic
Creators: name: Kawamoto, Sae
name: Nonaka, Daisuke
name: Inthavong, Nouhak
Publisher: name: figshare
Year: 2024
Subjects: Space Science
Medicine
Environmental Sciences not elsewhere classified
Science Policy
Biological Sciences not elsewhere classified
Cancer

description: Additional file 1.
Organic nanotubes created from mesogenic derivatives
Creators: name: Novotna, Vladimira
name: Hamplova, Vera
name: Lejcek, Lubor
name: Pociecha, Damian
name: Cigl, Martin
name: Fekete, Ladislav
name: Glogarova, Milada
name: Bednarova, Lucie
name: Majewski, Pawel W.
name: Gorecka, Ewa
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A facile route to prepare the nanotubes from rod-like mesogens dissolved in typical organic solvents is reported. For selected types of chiral rod-like molecules, both enantiomers as well as the racemic mixtures formed the nanotubes by slow evaporation from a solution, regardless of the solvent, concentration or deposition type. Obtained supramolecular assemblies were studied using AFM and SEM techniques. Additional methods (IR, UV-Vis spectroscopy and x-ray diffraction) were applied to characterize the observed nanotubes. The difference in the surface tension at opposite crystallite surfaces is suggested as a possible mechanism for the nanotube nucleation.
description: 5 pages, 5 figures
title: Evaluation of tolerance/resistance to phosphine of stored product beetle populations from Europe, by using different diagnostic methods
Creators: name: Sakka, Maria K.
name: Riga, Maria
name: Vontas, John
name: Götze, Marie-Carolin
name: Allegra, Jonny
name: Gerhard, Jakob
name: Athanassiou, Christos G.
Publisher: name: Julius Kühn-Institut
Year: 2018

description: We evaluated the susceptibility to phosphine in different populations originated from 14 European countries, by following different diagnostic protocols. In total, more than 200 populations were screened during these tests, classified to 9 beetle species: Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae), Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae), Oryzaephilus surinamensis (L.) (Coleoptera: Silvanidae), Sitophilus oryzae (L.) (Coleoptera: Curculionidae), Sitophilus granarius (L.) (Coleoptera: Curculionidae), Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), Cryptolestes ferrugineus (Stephens) (Coleoptera: Laemophloeidae), Rhyzopertha dominica (F.) (Coleoptera: Bostrychidae) and Lasioderma serricorne (F.) (Coleoprtera: Anobiidae). The different bioassay-related diagnostic protocols that were followed were based on different exposure intervals and phosphine concentrations, ranging between 90 min and 4 d, and between 30 and 3000 ppm, respectively. Our results indicated that one of the populations that had been sampled from Europe was strongly resistant to phosphine. Moreover, the different protocols provide comparable results, which means that a standardized diagnostic can be further designed and adopted. Moreover, molecular assays indicated that the mutations P49S in R. dominica and P45S in T. castaneum are common among different populations, regardless of the degree of resistance to phosphine. Our results suggest that there are reliable quick tools for the evaluation of resistance to phosphine and that insect sampling in target areas should be conducted on a regular basis.
description: Julius-Kühn-Archiv, Nr. 463, Vol. 2 (2018): Proceedings of the 12th International Working Conference on Stored Product Protection (IWCSPP) in Berlin, Germany, October 7-11, 2018
Constant spacing in filament bundles
Creators: name: Atkinson, Daria W.
name: Santangelo, Christian D.
name: Grason, Gregory M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Assemblies of filaments appear in a wide range of systems: from biopolymer bundles, columnar liquid crystals, and superconductor vortex arrays; to familiar macroscopic materials, like ropes, cables and textiles. Interactions between the constituent filaments in such systems are most sensitive to the {\it distance of closest approach} between the central curves which approximate their configuration, subjecting these distinct assemblies to common geometric constraints. In this paper, we consider two distinct notions of constant spacing in multi-filament packings in $\mathbb{R}^3$: {\it equidistance}, where the distance of closest approach is constant along the length of filament pairs; and {\it isometry}, where the distances of closest approach between all neighboring filaments are constant and equal. We show that, although any smooth curve in $\mathbb{R}^3$ permits one dimensional families of collinear equidistant curves belonging to a ruled surface, there are only two families of tangent fields with mutually equidistant integral curves in $\mathbb{R}^3$. The relative shapes and configurations of curves in these families are highly constrained: they must be either (isometric) developable domains, which can bend, but not twist; or (non-isometric) constant-pitch helical bundles, which can twist, but not bend. Thus, simultaneously bent and twisted filament textures, such as twisted toroids of condensed DNA plasmids or wire ropes, are doubly frustrated: twist frustrates constant neighbor spacing in the cross-section, while non-equidistance requires longitudinal variations of inter-filament spacing. To illustrate the consequences of the failure of equidistance, we compare spacing in three "almost equidistant" ansatzes for twisted toroidal bundles and use our formulation of equidistance to construct upper bounds on the growth of longitudinal variations of spacing with bundle thickness.
description: 36 pages, 5 figures
Dynamics of tunneling into nonequilibrium edge states
Creators: name: Fregoso, Benjamin M.
name: Dahlhaus, Jan P.
name: Moore, Joel E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Time-dependent perturbations can drive a trivial two-dimensional band insulator into a quantum Hall-like phase, with protected nonequilibrium states bound to its edges. We propose an experiment to probe the existence of these topological edge states which consists of passing a tunneling current through a small two-dimensional sample out of equilibrium. The signature is a nonquantized metallic conductance near the edges of the sample and, in contrast, an excitation gap in the bulk. This proposal is demonstrated for the case of a two-dimensional lattice model of Dirac electrons with tunable mass in a strong electromagnetic field. In addition, we also study the tunneling conductance of the driven resonant level model and find a phenomenon similar to dynamic localization in which certain transport channels are suppressed.
description: 8 pages, 5 figures, minor edits, published version
Assessment of transparency indicators in Space Medicine
Creators: name: Bellomo, Rosa Katia
name: Ioannidis, John P.A.
name: Zavalis, Emmanuel A.
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Medicine and Health Sciences

description: Behind space exploration there is surely a strong scientific background, but it comes together with both political and corporate interests and considerable risk of bias given the intrinsic difficulties of carrying on rigorous scientific research on these particular topics. In this regard, transparency features, such as sharing of data and code, availability of pre-registered protocols, as well as reporting of conflicts of interest and funding, are important to assess to evaluate the rigor of evidence obtained in biomedical research in this field. In order to map the transparency of the space medicine literature, here we will perform a meta-epidemiological assessment of these transparency indicators in articles regarding scientific research in space medicine.
Certified Reduced Basis VMS-Smagorinsky model for natural convection flow in a cavity with variable height
Creators: name: Ballarin, Francesco
name: Rebollo, Tomás Chacón
name: Ávila, Enrique Delgado
name: Mármol, Macarena Gómez
name: Rozza, Gianluigi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this work we present a Reduced Basis VMS-Smagorinsky Boussinesq model, applied to natural convection problems in a variable height cavity, in which the buoyancy forces are involved. We take into account in this problem both physical and geometrical parametrizations, considering the Rayleigh number as a parameter, so as the height of the cavity. We perform an Empirical Interpolation Method to approximate the sub-grid eddy viscosity term that let us obtain an affine decomposition with respect to the parameters. We construct an a posterior error estimator, based upon the Brezzi-Rappaz-Raviart theory, used in the greedy algorithm for the selection of the basis functions. Finally we present several numerical tests for different parameter configuration.
Range Expansion of Heterogeneous Populations
Creators: name: Reiter, Matthias
name: Rulands, Steffen
name: Frey, Erwin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Risk spreading in bacterial populations is generally regarded as a strategy to maximize survival. Here, we study its role during range expansion of a genetically diverse population where growth and motility are two alternative traits. We find that during the initial expansion phase fast growing cells do have a selective advantage. By contrast, asymptotically, generalists balancing motility and reproduction are evolutionarily most successful. These findings are rationalized by a set of coupled Fisher equations complemented by stochastic simulations.
Protocol of a systematic review: Frequency of Open Science Practices in Psychometric Suicide Research.
Creators: name: Alvarado, Jesús M.
name: Flores-Kanter, Pablo Ezequiel
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: Medicine and Health Sciences

description: In this repository we will upload supplementary material from the PROSPERO register.
Vein textures and chemistry of ore minerals associated with high grade gold mineralization from A east pit, Chatree gold deposit, Central Thailand
Creators: name: Phinyaphat Rongkhapimonpong
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2016
Subjects: Quartz texture, High grade gold, Chemistry, Chatree gold deposit, Thailand

description: Bulletin of Earth Sciences of Thailand (BEST), 8, 1, 42-56
Additional file 1 of Progression prediction of coronary artery lesions by echocardiography-based ultrasomics analysis in Kawasaki disease
Creators: name: Xu, Dan
name: Feng, Chen-Hui
name: Cao, Ai-Mei
name: Yang, Shuai
name: Tang, Zhen-Chao
name: Li, Xiao-Hui
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Virology
subject: Computational Biology

description: Supplementary Material 1
Examining the Potential for Conversational Exploratory Search using a Smart Speaker Digital Assistant
Creators: name: Kaushik, Abhishek
name: Jones, Gareth J. F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Online Digital Assistants, such as Amazon Alexa, Google Assistant, Apple Siri are very popular and provide a range or services to their users, a key function is their ability to satisfy user information needs from the sources available to them. Users may often regard these applications as providing search services similar to Google type search engines. However, while it is clear that they are in general able to answer factoid questions effectively, it is much less obvious how well they support less specific or exploratory type search tasks. We describe an investigation examining the behaviour of the standard Amazon Alexa for exploratory search tasks. The results of our study show that it not effective in addressing these types of information needs. We propose extensions to Alexa designed to overcome these shortcomings. Our Custom Alexa application extends Alexa's conversational functionality for exploratory search. A user study shows that our extended Alexa application both enables users to more successfully complete exploratory search tasks and is well accepted by our test users.
Distance matrices of a tree: two more invariants, and in a unified framework
Creators: name: Choudhury, Projesh Nath
name: Khare, Apoorva
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C12 (primary), 05C05, 05C20, 05C22, 05C25, 05C50, 05C83, 15A15 (secondary)

description: Graham-Pollak showed that for $D = D_T$ the distance matrix of a tree $T$, det$(D)$ depends only on its number of edges. Several other variants of $D$, including directed/multiplicative/$q$- versions were studied, and always, det$(D)$ depends only on the edge-data. We introduce a general framework for bi-directed weighted trees, with threefold significance. First, we improve on state-of-the-art for all known variants, even in the classical Graham-Pollak case: we delete arbitrary pendant nodes (and more general subsets) from the rows/columns of $D$, and show these minors do not depend on the tree-structure. Second, our setting unifies all known variants (with entries in a commutative ring). We further compute $D^{-1}$ in closed form, extending a result of Graham-Lovasz [Adv. Math. 1978] and answering an open question of Bapat-Lal-Pati [Lin. Alg. Appl. 2006] in greater generality. Third, we compute a second function of the matrix $D$: the sum of all its cofactors, cof$(D)$. This was worked out in the simplest setting by Graham-Hoffman-Hosoya (1978), but is relatively unexplored for other variants. We prove a stronger result, in our general setting, by computing cof$(.)$ for minors as above, and showing these too depend only on the edge-data. Finally, we show our setting is the "most general possible", in that with more freedom in the edgeweights, det$(D)$ and cof$(D)$ depend on the tree structure. In a sense, this completes the study of the invariants det$(D_T)$, cof$(D_T)$ for trees $T$ with edge-data in a commutative ring. Moreover: for a bi-directed graph $G$ we prove multiplicative Graham-Hoffman-Hosoya type formulas for det$(D_G)$, cof$(D_G)$, $D_G^{-1}$. We then show how this subsumes their 1978 result. The final section introduces and computes a third, novel invariant for trees and a Graham-Hoffman-Hosoya type result for our "most general" distance matrix $D_T$.
description: Major updates to the exposition; several "alternate proofs" are removed. Final version, 30 pages + 2 figures, to appear in the European Journal of Combinatorics
title: Analysis of the Preferences of Younger and Older Indonesian Users Towards the User Interface of Mobile Instant Messaging Applications
Creators: name: Surjanto, Jennifer
Publisher: name: Technische Hochschule Brandenburg
Year: 2022
Subjects: subject: 004 Datenverarbeitung; Informatik
subject: 302 Soziale Interaktion

description: In recent years, the messaging application has been Indonesia’s most widely used mobile app. The number of users of these instant messaging (IM) applications has also been increasing constantly. Unfortunately, research has mentioned that older users often face challenges in using them. Although some papers have created guidelines for designing interfaces for the elderly, these applications are still focused on developing according to the need of young people. In addition, the aging of adults increases their chances of facing some difficulties. Therefore, this thesis aims to give a better understanding of the interface of the mobile instant messaging (MIM) application preferred by its users, specifically Indonesian users. By distributing an online-based survey to 150 Indonesian users of the MIM application, the preferences of several features in the message list and messaging interface of this application are collected. Then, the statistical analysis of the results found that the preferences of both users’ age groups differ. Among them are the button or icon each age group finds more suitable, the bottom bar in the messaging interface, and the placement of action options to be performed to the message they prefer most. Thus, this research also presents design recommendations that both younger and older users prefer.
Dephasing in single-electron generation due to environmental noise probed by Hong Ou Mandel interferometry
Creators: name: Iyoda, Eiki
name: Kato, Takeo
name: Koshino, Kazuki
name: Martin, Thierry
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider the effect of dephasing on a quantum dot which injects single electrons on a chiral edge channel of the quantum Hall effect. Dephasing is described by the coupling of the dot to a bosonic bath which represents the electromagnetic environment. Using the input-output formalism of quantum optics, we derive the density matrix of the edge degrees of freedom. Results are illustrated by computing the zero frequency current-current correlations when two such single electron emitters achieve a collision at the location of a quantum point contact, in the same spirit as the Hong Ou Mandel experiment of quantum optics. Such correlations are directly linked to the quantum mechanical purity. We show that as observed in a recent experiment, the effect of dephasing leads to a non-vanishing of the Hong Ou Mandel dip when the time delay between the two electron wave packets is zero. Generalizations to time filtered wave packets as well as to asymmetric, detuned injection between opposite edges are obtained.
description: 8 pages, 4 figures
Filtrations of numerically flat Higgs bundles and curve semistable Higgs bundles on Calabi-Yau manifolds
Creators: name: Bruzzo, Ugo
name: Capasso, Armando
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14F05, 14H60, 14J60

description: We consider Higgs bundles satisfying a notion of numerical flatness (H-nflatness) that was previously introduced, and show that they have Jordan-Hölder filtrations whose quotients are stable, locally free and H-nflat. This is applied to show that curve semistable Higgs bundles on simply connected Calabi-Yau manifolds have vanishing discriminant.
description: 9 pages. v2: 12 pages, details (especially to the proof of Lemma 3.1), explanations and comments added; typos corrected
2 + 1 dimensional gravity from Maxwell and semi-simple extension of the Poincare gauge symmetric models
Creators: name: Hoseinzadeh, S.
name: Rezaei-Aghdam, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain 2 + 1 dimensional gravity with cosmological constant which is coupled to gauge fields, using Maxwell and semi-simple extension of the Poincare gauge symmetric models (i.e. Chern-Simons models with these gauge groups). Also, we obtain some Ads and BTZ type solutions for the classical equations of motion for these 2 + 1 dimensional gravities. For the semi-simple extension of the Poincare gauge group we investigate the Ads/CFT correspondence and show that the model at the boundary is equivalent to the sum of three WZW models over group SO(2,1). Then, we show that the central charge of the CFT is the same as that of CFT at the boundary of Ads spacetime related to the Chern-Simons model with gauge group SO(2,2). Finally, we show that these two 2 + 1 dimensional gravity models are dual (canonically transformed) to each other.
description: 17 pages, two references are added
title: Implementation guideline of online inventory tool in context of RTLS inventory management
Creators: name: Hric, Peter
Publisher: name: TU Wien
Year: 2022
Subjects: subject: Inventory management
subject: Guideline
subject: RTLS
subject: Digital Twin

description: The automotive industry has a strong tradition in Slovakia, it has become the most important industry and the driving force of the Slovak economy. Currently, it is the strongest sector in terms of share in the total GDP of Slovakia, exports of Slovakia, but also job creation.The current geopolitical situation has a significant impact on the functioning of this industry and, of course, on individual companies in the entire supply chain. One of the possibilities to eliminate adverse effects is the use of the most modern technologies. One of them is the Auto-ID technology, which can have a significant impact on the proper functioning of the company. The aim of this work was to obtain data that could be used inthe creation of a guideline for the introduction of such a technology in the company.The first part of the master thesis introduces the Auto-ID technologies, their applications and usage in theory. Main focus is related to inventory management and tracking of thework in process parts in real time and location. The second part explains the methodology of implementation of RTLS and furthermore Digital Twin in the given company. The goal of this chapter was to gain real experience in implementation from the timing, personnel and technology point of view.In the last part, author analyzes the data from the questionnaire to explicit the experiences of directly involved participants.
Total hydrocarbon profile and trace metal level in sediments from the upper Bonny estuary in southern Nigeria
Creators: name: Omokheyeke, O.
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2016
Subjects: Total hydrocarbons, Sediment, trace metals, environmental perturbations, constant rate of supply.

description: Bulletin of Earth Sciences of Thailand (BEST), 8, 1, 57-68
Geophysical and Hydrogeological Study for Evaluating Seawater Intrusion in Coastal Aquifers of Amphoe Cha-am, Changwat Phetchaburi
Creators: name: Jiraporn Sae-Ju
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2016
Subjects: Coastal aquifer, Hydrogeological characteristics Phetchaburi, Seawater intrusion, Vertical electrical sounding method

description: Bulletin of Earth Sciences of Thailand (BEST), 8, 1, 69-76
Counterfactual Inference for Consumer Choice Across Many Product Categories
Creators: name: Donnelly, Rob
name: Ruiz, Francisco R.
name: Blei, David
name: Athey, Susan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Econometrics (econ.EM)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: This paper proposes a method for estimating consumer preferences among discrete choices, where the consumer chooses at most one product in a category, but selects from multiple categories in parallel. The consumer's utility is additive in the different categories. Her preferences about product attributes as well as her price sensitivity vary across products and are in general correlated across products. We build on techniques from the machine learning literature on probabilistic models of matrix factorization, extending the methods to account for time-varying product attributes and products going out of stock. We evaluate the performance of the model using held-out data from weeks with price changes or out of stock products. We show that our model improves over traditional modeling approaches that consider each category in isolation. One source of the improvement is the ability of the model to accurately estimate heterogeneity in preferences (by pooling information across categories); another source of improvement is its ability to estimate the preferences of consumers who have rarely or never made a purchase in a given category in the training data. Using held-out data, we show that our model can accurately distinguish which consumers are most price sensitive to a given product. We consider counterfactuals such as personally targeted price discounts, showing that using a richer model such as the one we propose substantially increases the benefits of personalization in discounts.
Preliminary Study of Metamorphic Rocks from Lan Sang National Park Indication of Ancient Tectonic Events in Western Thailand
Creators: name: Somporn Wonglak
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2016
Subjects: Lan Sang, High-Grade Metamorphism, Thailand

description: Bulletin of Earth Sciences of Thailand (BEST), 8, 1, 77-87
Additional file 1 of Baltimore community resident and collaborator perspectives on the influence of guaranteed income on health: a formative qualitative study
Creators: name: Nishimura, Holly M.
name: Snguon, Sevly
name: Dean, Lorraine T.
name: Moen, Marik
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Supplementary Material 1
m_c and m_b from M_B_c and improved estimate of f_B_c and f_B_c (2S)
Creators: name: Narison, Stephan
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We extract (for the first time) the correlated values of the running masses m_c and m_b from M_Bc using QCD Laplace sum rules (LSR) within stability criteria where pertubative (PT) expressions at N2LO and non-perturbative (NP) gluon condensates at LO are included. Allowing the values of m_{c,b}(m_{c,b}) to move inside the enlarged range of recent estimates from charmonium and bottomium sum rules (Table 1) obtained using similar stability criteria, wee deduce : m_c(m_c) = 1286(16) MeV and m_b(m_b) = 4208(8) MeV. Combined with previous estimates (Table 2), we deduce a tentative QCD Spectral Sum Rules (QSSR) average m_c(m_c) = 1266(6) MeV and m_b(m_b) = 4197(8) MeV, where the errors come from the precise determinations from J/psi and Upsilon sum rules. As a result, we present an improved prediction of f_B_c =371(17)MeV and the tentative upper bound f_B_c(2S)<139(6) MeV, which are useful for a further analysis of B_c-decays.
description: Latex sources, 8 pages, 2 Tables, 7 Figures. Reference corrected
Analysis of the longitudinal space charge impedance of a round uniform beam inside parallel plates and rectangular chamber
Creators: name: Wang, Lanfa
name: Li, Yingjie
Publisher: name: arXiv
Year: 2014
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: This paper analyzes the longitudinal space charge (LSC) impedances of a round uniform beam inside a rectangular and parallel plate chambers using the image charge method. This analysis is valid for arbitrary wavelengths and the calculation converges fast. The research shows that only a few of the image beams are needed to obtain a relative error less than 0.1%. The beam offset effect is also discussed in the analysis.
description: 17 Pages, 13 Figures, submitted to PRST-AB
Longtime behavior of the traveling-wave model for semiconductor lasers
Creators: name: Sieber, Jan
Publisher: name: Weierstrass Institute
Year: 2002
Subjects: subject: laser dynamics
subject: invariant manifold theory
subject: hyperbolic systems of partial differential equations
subject: 78A60
subject: 37L10
subject: 35P10

description: The traveling-wave model is a popular tool for investigating longitudinal dynamical effects in semiconductor lasers, e.g., sensitivity to delayed optical feedback. This model consists of a hyperbolic linear system of partial differential equations (PDEs) with one spatial dimension which is nonlinearly coupled with a slow subsystem of ordinary differential equations (ODEs). Firstly, we prove the basic statements about the existence of solutions of the initial-boundary-value problem and their smooth dependence on initial values and parameters. Hence, the model constitutes a smooth infinite-dimensional dynamical system. Then, we exploit this fact and the particular slow-fast structure of the system to construct a low-dimensional attracting invariant manifold for certain parameter constellations. The flow on this invariant manifold is described by a system of ODEs which is accessible to classical bifurcation theory and numerical tools like, e.g., AUTO.
Non-adiabatic effect on the quantum heat flux control
Creators: name: Uchiyama, Chikako
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide a general formula of quantum transfer that includes the non-adiabatic effect under periodic environmental modulation by using full counting statistics in Hilbert-Schmidt space. Applying the formula to an anharmonic junction model that interacts with two bosonic environments within the Markovian approximation, we find that the quantum transfer is divided into the adiabatic (dynamical and geometrical phases) and non-adiabatic contributions. This extension shows the dependence of quantum transfer on the initial condition of the anharmonic junction just before the modulation, as well as the characteristic environmental parameters such as interaction strength and cut-off frequency of spectral density. We show that the non-adiabatic contribution represents the reminiscent effect of past modulation including the transition from the initial condition of the anharmonic junction to a steady state determined by the very beginning of the modulation. This enables us to tune the frequency range of modulation, whereby we can obtain the quantum flux corresponding to the geometrical phase by setting the initial condition of the anharmonic junction.
description: 11 pages, 4 figures; mistypes are corrected
Bridging the divide: comparing the efficiency and transparency of two division algorithms
Creators: name: McNeil, Nicole M.
name: Mogan, Alexa
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Educational Psychology
subject: Cognitive Psychology
subject: Social and Behavioral Sciences
subject: Education
subject: Science and Mathematics Education
subject: Psychology
subject: FOS: Psychology

description: This project will be exploring how the traditional long division algorithm compares to the partial quotients algorithm in terms of efficiency and transparency. Data will be collected from participants' problem solving and verbal explanations of why the given algorithm works.
Additional file 2 of Baltimore community resident and collaborator perspectives on the influence of guaranteed income on health: a formative qualitative study
Creators: name: Nishimura, Holly M.
name: Snguon, Sevly
name: Dean, Lorraine T.
name: Moen, Marik
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Supplementary Material 2
Stratigraphic Distribution of Permian Gastropods from Tak Fa Formation in Southern Part of Nakhon Sawan Province, Thailand
Creators: name: Chatchalerm Ketwetsuriya
Publisher: name: Department of Geology, Chulalongkorn University
Year: 2016
Subjects: and Pitsanupong Kanjanapayont

description: Bulletin of Earth Sciences of Thailand (BEST), 8, 1, 88-92
First moments of nucleon generalized parton distributions in chiral perturbation theory at full one-loop order
Creators: name: Wein, Philipp
name: Bruns, Peter C.
name: Schäfer, Andreas
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: In this paper we present chiral extrapolation formulas for the generalized form factors connected to the first moments of chiral-even generalized parton distributions. For the description of QCD at low energies we employ the framework of two-flavor covariant baryon chiral perturbation theory at full one-loop accuracy. Our results are well suited for the extrapolation of lattice QCD data to physical quark masses.
description: We have updated the text to match the version published in PRD
title: Potential for using pheromone trapping and molecular screening in phosphine resistance research
Creators: name: Daglish, Gregory J.
name: Jagadeesan, Rajeswaran
name: Singarayan, Virgine
name: Nath, Nisa S.
name: Schlipalius, David I.
name: Ebert, Paul R.
name: Nayak, Manoj K.
Publisher: name: Julius Kühn-Institut
Year: 2018

description: Phosphine resistance monitoring typically involves bioassays of beetles from population samples collected from grain storage facilities. Insects are classified into susceptible or resistant phenotypes based on mortality or survival at one or more discriminating doses. Although valuable, phenotype testing has several drawbacks. First, phenotype testing needs live insects, and considerable effort is required to collect and maintain them before testing. Second, population samples may contain multiple genotypes expressing different levels of resistance that may not be distinguishable using discriminating dose bioassays. Third, collections are likely to be focussed around grain storages to maximise sampling success. Recent research shows that several key pests are actively dispersing through flight. The availability of commercial pheromone lures and recent advances in molecular screening provide an opportunity to provide information on resistance gene frequencies more broadly across the landscape. This approach is proving to be a valuable adjunct to traditional resistance testing in Australia.
description: Julius-Kühn-Archiv, Nr. 463, Vol. 2 (2018): Proceedings of the 12th International Working Conference on Stored Product Protection (IWCSPP) in Berlin, Germany, October 7-11, 2018
Hierarchical Model Reduction Techniques for Flow Modeling in a Parametrized Setting
Creators: name: Zancanaro, Matteo
name: Ballarin, Francesco
name: Perotto, Simona
name: Rozza, Gianluigi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this work we focus on two different methods to deal with parametrized partial differential equations in an efficient and accurate way. Starting from high fidelity approximations built via the hierarchical model reduction discretization, we consider two approaches, both based on a projection model reduction technique. The two methods differ for the algorithm employed during the construction of the reduced basis. In particular, the former employs the proper orthogonal decomposition, while the latter relies on a greedy algorithm according to the certified reduced basis technique. The two approaches are preliminarily compared on two-dimensional scalar and vector test cases.
Shifting Depictions of the Vietnam War in Victorian Government Education Policies, Curriculum Documents, Textbooks and Education Resources, 1975-2005
Creators: name: COOK, BRONWYN ELIZABETH
Publisher: name: Monash University
Year: 2023
Subjects: History and philosophy of education

description: This study investigated how the Vietnam War was depicted in Victorian Government education policies, curriculum documents, textbooks and education resources, 1975-2005. A study of 520 documents found that the primary drivers of these shifts were History and Humanities textbook authors, many of whom were teachers, and wider socio-political contexts and changes across the period. The shifts had little to do with Government policy or curriculum documents. Other drivers influencing these changes were the time since the war’s end and emerging public discourse, and an increasing rise of oral histories of the Vietnam War, that included veterans’ voices.
Fast Sweeping Methods for Hyperbolic Systems of Conservation Laws at Steady State II
Creators: name: Engquist, Bjorn
name: Froese, Brittany D.
name: Tsai, Yen-Hsi Richard
Publisher: name: arXiv
Year: 2014
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The idea of using fast sweeping methods for solving stationary systems of conservation laws has previously been proposed for efficiently computing solutions with sharp shocks. We further develop these methods to allow for a more challenging class of problems including problems with sonic points, shocks originating in the interior of the domain, rarefaction waves, and two-dimensional systems. We show that fast sweeping methods can produce higher-order accuracy. Computational results validate the claims of accuracy, sharp shock curves, and optimal computational efficiency.
Chiral and achiral mechanisms of self-limiting, twisted bundle assembly
Creators: name: Grason, Gregory M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A generalized theory of the self-limiting assembly of twisted bundles of filaments and columns is presented. Bundles and fibers form in a broad variety of supramolecular systems, from biological to synthetic materials. A widely-invoked mechanism to explain their finite diameter relies on chirality transfer from the molecular constituents to collective twist of the assembly, the effect of which frustrates the lateral assembly and can select equilibrium, finite diameters of bundles. In this article, the thermodynamics of twisted-bundle assembly is analyzed to understand if chirality transfer is necessary for self-limitation, or instead, if spontaneously-twisting, achiral bundles also exhibit self-limited assembly. A generalized description is invoked for the elastic costs imposed by twist for bundles of various states of intra-bundle order from nematic to crystalline, as well as a generic mechanism for generating twist, classified both by {\it chirality} but also the {\it twist susceptibility} of inter-filament alignment. The theory provides a comprehensive set of predictions for the equilibrium twist and size of bundles as a function of surface energy as well as chirality, twist susceptibility, and elasticity of bundles. Moreover, it shows that while spontaneous twist can lead to self-limitation, assembly of twisted {\it achiral} bundles can be distinguished qualitatively in terms of their range of equilibrium sizes and thermodynamic stability relative to bulk (untwisted) states.
description: 16 pages; 9 figures; 2 appendices