cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
X-ray spectropolarimetric measurements of the Kerr metric
Creators: name: Liu, Dan
name: Li, Zilong
name: Cheng, Yifan
name: Bambi, Cosimo
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It is thought that the spacetime geometry around black hole candidates is described by the Kerr solution, but an observational confirmation is still missing. Today, the continuum-fitting method and the analysis of the iron K$α$ line cannot unambiguously test the Kerr paradigm because of the degeneracy among the parameters of the system, in the sense that it is impossible with current X-ray data to distinguish a Kerr black hole from a non-Kerr object with different values of the model parameters. In this paper, we study the possibility of testing the Kerr nature of black hole candidates with X-ray spectropolarimetric measurements. Within our simplified model that does not include the effect of returning radiation, we find that it is impossible to test the Kerr metric and the problem is still the strong correlation between the spin and possible deviations from the Kerr geometry. Moreover, the correlation is very similar to that of other two techniques, which makes the combination of different measurements not very helpful. Nevertheless, our results cannot be taken as conclusive and, in order to arrive at a final answer, the effect of returning radiation should be properly taken into account.
description: 12 pages, 8 figures. v2: refereed version
SMART: Investigating the Impact of Threshold Voltage Suppression in an In-SRAM Multiplication/Accumulation Accelerator for Accuracy Improvement in 65 nm CMOS Technology
Creators: name: Seyedfaraji, Saeed
name: Mesgari, Baset
name: Rehman, Semeen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: State-of-the-art in-memory computation has recently emerged as the most promising solution to overcome design challenges related to data movement inside current computing systems. One of the approaches to performing in-memory computation is based on the analog behavior of the data stored inside the memory cell. These approaches proposed various system architectures for that. In this paper, we investigated the effect of threshold voltage suppression on the access transistors of the In-SRAM multiplication and accumulation (MAC) accelerator to improve and enhance the performance of bit line (bit line bar) discharge rate that will increase the accuracy of MAC operation. We provide a comprehensive analytical analysis followed by circuit implementation, including a Monte-Carlo simulation by a 65nm CMOS technology. We confirmed the efficiency of our method (SMART) for a four-by-four-bit MAC operation. The proposed technique improves the accuracy while consuming 0.683 pJ per computation from a power supply of 1V. Our novel technique presents less than 0.009 standard deviations for the worst-case incorrect output scenario.
Grammaticalization parameters and the retrieval of alternatives: Latin nec from discourse connector to uninterpretable feature
Creators: name: Gianollo, Chiara
Publisher: name: Zenodo
Year: 2020

description: By means of the study of Latin focus-sensitive negation nec (‘furthermore not’; ‘neither’;
 ‘not even’), I address a more general question on the scope and the cyclicity
 of semantic change. I review Lehmann’s syntagmatic parameters of grammaticalization
 (structural scope, bondedness, syntagmatic variability) with the aim of evaluating
 to what extent they are reflected in some types of semantic change. With
 nec we see the evolution, from Latin to Romance, of a discourse-structuring particle
 with an additive component into the building block of new emphatic (scalar)
 negative polarity items, which in turn are later reanalyzed as elements of Negative
 Concord (endowed with uninterpretable formal features). I argue that an important
 aspect of this change concerns the way alternatives to the focused element
 are retrieved in the context. I propose that increase in bondedness and decrease in
 syntagmatic variability correlate with a change in the form taken by alternatives,
 which decrease in scope from discourse units to individual alternatives.
SIMULTANEOUS SCREENING OF ZEBRAFISH LARVA LOCOMOTOR AND  CARDIAC FUNCTIONS: A MICROFLUIDIC MULTI-PHENOTYPIC APPROACH
Creators: Khalili, Arezoo
van Wijngaarden, Ellen
Zoidl, Georg R.
Rezai, Pouya
Publisher: name: University of Alberta Library
Year: 2022

Conference abstract. Part of the Proceedings of the Canadian Society for Mechanical Engineering International Congress 2022.
Super-Resolution Imaging by Arrays of High-Index Spheres Embedded in Transparent Matrices
Creators: name: Allen, Kenneth W.
name: Farahi, Navid
name: Li, Yangcheng
name: Limberopoulos, Nicholaos I.
name: Walker, Dennis E.
name: Urbas, Augustine M.
name: Astratov, Vasily N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We fabricated thin-films made from polydimethylsiloxane (PDMS) with embedded high-index (n~1.9-2.2) microspheres for super-resolution imaging applications. To control the position of microspheres, such films can be translated along the surface of the nanoplasmonic structure to be imaged. Microsphere-assisted imaging, through these matrices, provided lateral resolution of ~λ/7 in nanoplasmonic dimer arrays with an illuminating wavelength λ=405 nm. Such thin films can be used as contact optical components to boost the resolution capability of conventional microscopes.
description: 3 pages, 3 figures, IEEE proceeding of NAECON June 24-27 (2014)
Homogenization techniques for constitutive modeling in peridynamics : from analytical methods to machine learning
Creators: name: Xu, Xiao, Active 21st Century
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Nonlocal model
Peridynamics
Homogenization
Machine learning

description: As a nonlocal extension of continuum mechanics, peridynamics has been widely and effectively applied in different fields where discontinuities in the field variables arise from an initially continuous body. An important component of the constitutive model in peridynamics is the influence function which weights the contribution of all the interactions over a nonlocal region surrounding a point of interest. Recent work has shown that in solid mechanics the influence function has a strong relationship with the heterogeneity of a material's microstructure. Therefore, we first propose an analytical method of deriving the peridynamic influence function for a one-dimensional initial/boundary- value problem in an elastic material with periodic microstructure. We demonstrate that the influence function derived from microstructural considerations is more accurate in predicting time dependent displacements and wave dynamics compared with standard influence functions used in peridynamic literature. However, this analytical method that derives an accurate influence function analytically from a given microstructure requires lengthy derivations and complex mathematical models. To avoid these complexities, we then develop a data-driven regression algorithm to find the optimal bond-based peridynamic model to describe the macro-scale deformation of linear elastic medium with periodic heterogeneity. We generate macro-scale deformation training data by averaging over periodic microstructure unit cells and add a physical energy constraint representing the homogenized elastic modulus of the microstructure to the regression algorithm. We demonstrate this scheme for examples of one- and two-dimensional linear elastodynamics and show that the energy constraint improves the accuracy of the resulting peridynamic model. In addition, we generalize the data-driven framework to the context of subsurface transport so that it can be applied for the discovery of optimal nonlocal models describing anomalous behaviors in subsurface solute transport. Using spatially sparse breakthrough curves recovered from fine-scale particle-density simulations, we learn the best coarse-scale nonlocal model using a nonlocal operator regression technique. A comparison with trained classical models and with black-box deep neural networks confirms the superiority of the predictive capability of the proposed model. Meanwhile, we also develop a domain decomposition method for the efficient simulation of nonlocal problems throughout our work.
Presentation on Euro 2021 Conference, Athens, Greece "The price-setting newsvendor problem with barter exchange in adverse market circumstances"
Creators: name: Bieniek, Milena
Publisher: name: Zenodo
Year: 2022
Subjects: newsvendor
additive demand
barter exchange

description: Presentation shows the advantages and disadvantages of barter exchange, its influence on sustainability. The aim of the presentation is to show the mathematical model of the newsvendor problem with bartering by introducing the additive and price-dependent demand to the model of Hua, et al. (Omega 2020). The fact that the additive demand can attain negative values in adverse market conditions is considered.
description: This work was supported by the National Science Centre, Poland, grant no 2019/35/D/HS4/00801.
New results on transverse spin asymmetries from COMPASS
Creators: name: Parsamyan, Bakur
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: One of the important objectives of the COMPASS experiment is the exploration of transverse spin structure of nucleon via spin (in)dependent azimuthal asymmetries in semi-inclusive deep inelastic scattering (SIDIS) of polarized leptons (and soon also Drell-Yan (DY) reactions with $π^-$) off transversely polarized target. For this purpose a series of measurements were made in COMPASS, using 160 GeV/c longitudinally polarized muon beam and polarized $^6LiD$ and $NH_3$ targets and are foreseen with 190 GeV/c $π^-$ beam on polarized $NH_3$. The experimental results obtained by COMPASS for azimuthal effects in SIDIS play an important role in the general understanding of the three-dimensional nature of the nucleon and are widely used in theoretical analyses and global data fits. Future first ever polarized DY-data from COMPASS compared with SIDIS results will open a new chapter probing general principles of QCD TMD-formalism. In this review main focus will be given to the very recent COMPASS results obtained for SIDIS transverse spin asymmetries from four "Drell-Yan" $Q^2$-ranges.
description: 7 pages, 12 figures, "Transversity-2014"-conference
Vagueness, context-sensitivity and scale structure of four types of adjectives with the suffix -ish
Creators: name: Harris, Tabea
Publisher: name: Zenodo
Year: 2020

description: In English, the adjective-forming suffix -ish can be productively tacked onto relative
 adjectives (e.g. tall-ish) and total absolute adjectives (e.g. dry-ish), but not to
 most partial absolute adjectives (e.g. ?bent-ish) or inherently non-scalar adjectives
 (e.g. ?pregnant-ish). By applying Burnett’s (2017) recent framework DelTCS situated
 within Delineation Semantics, which she enriched using the notions Tolerant, Classical,
 Strict, first formulated in Cobreros et al. (2012), I will show why suffixal -ish
 is felicitous with the first two subtypes of adjectives, but not with the latter two.
 After a brief comparison with a similar framework from Lasersohn (1999), it will
 be shown that the scale structure in the DelTCS approach is derived from the adjective’s
 context-sensitivity and vagueness patterns. Furthermore, the discussion
 will point to a few instances that do not neatly fit into the mold of current semantic
 analyses as well as some suggestions on how to obtain a clearer picture of the
 actual attested data.
Two Applications of Brouwer's Fixed Point Theorem: in Insurance and in Biology Models
Creators: name: Borogovac, Muhamed
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 39A99, 47H10, 65H10

description: In the first part of the article, a new interesting system of difference equations is introduced. It is developed for re-rating purposes in general insurance. A nonlinear transformation $φ$ of a d-dimensional $(d \ge 2)$ Euclidean space is introduced that enables us to express the system in the form $f^{t+1}:=φ(f^t),\, t=0,\, 1,\, 2,\, \ldots $. Under typical actuarial assumptions, existence of solutions of that system is proven by means of Brouwer's fixed point theorem in normed spaces. In addition, conditions that guarantee uniqueness of a solution are given. The second, smaller part of the article is about Leslie-Gower's system of $d \ge 2$ difference equations. We focus on the system that satisfies conditions consistent with weak inter-specific competition. We prove existence and uniqueness of the equilibrium of the model under surprisingly simple and very general conditions. Even though the two parts of this article have applications in two different sciences, they are connected with similar mathematics, in particular by our use of Brouwer's Fixed point Theorem.
description: 16 pages; In this version, added Leslie-Gower model for competition of d>2 species.; Paper should appear in Journal of Difference Equations and Applications
Suplemental Information - Hildebrand et al. AJP Lung 2023
Creators: name: Brandenberger, Christina
name: Hildebrand, Christina Beatrix
name: Lichatz, Rita
name: Pich, Andreas
name: Mühlfeld, Christian
name: Woltemate, Sabrina
name: Vital, Marius
Publisher: name: figshare
Year: 2023
Subjects: Other biomedical and clinical sciences not elsewhere classified

description: Supplemental files for Hildebrand et al. AJP Lung 2023
A Cross-Sample Analysis of Need to Learn and Factor Affecting the Selection to Study in Graduate Diploma Program in Teaching Profession
Creators: name: Pongwat Fongkanta
Publisher: name: DR.KEN Institute of Academic Development and Promotion
Year: 2022
Subjects: Need to Learn
Graduate Diploma Program in Teaching Profession
Teaching Career

description: Interdisciplinary Academic and Research Journal, 2, 5, 273-284
Dimensional Analysis of Thrusting by Electromagnetic Inertia
Creators: name: Pinheiro, Mario J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We investigate the so called Biefeld-Brown effect in terms of dimensional analysis and in the frame of classical electrodynamics.
description: 5 pages, submitted to journal. arXiv admin note: text overlap with arXiv:0901.3726
The Development Model of the Excellence School Management Based Philosophy of Sufficiency Economy, Ban Pongpuey School, Bueng Kan Primary Education Area Office
Creators: name: Tapin Setthabodee
Publisher: name: DR.KEN Institute of Academic Development and Promotion
Year: 2022
Subjects: Development
Excellence School Management
Philosophy of Sufficiency Economy

description: Interdisciplinary Academic and Research Journal, 2, 5, 285-308
On the semantic change of evidential argument jakoby-clauses in Polish
Creators: name: Łukasz Jędrzejowski
Publisher: name: Zenodo
Year: 2020
Subjects: evidentiality, inference, hearsay, Polish, diachrony, semantic change

description: The main aim of this chapter is to examine the semantic change of evidential
 argument clauses headed by the complementizer jakoby in the history of Polish.
 Mainly, I argue that jakoby developed from a hypothetical comparative complementizer
 meaning ‘as if’ into a hearsay complementizer, and provide empirical evidence
 showing that this process happened in the late Old Polish period, i.e. around
 1500. To begin with, I compare jakoby-clauses with complement że-clauses (‘that’-
 clauses) at the syntax-semantics interface, elaborate on their selected differences,
 and account for the source of these differences. Diachronically, I show that two
 factors in the lexical meaning of jakoby were responsible for the semantic change
 that it underwent: i) equative comparison and ii) counterfactual meaning. Both
 factors are taken to have paved the way for inferences from reportative or hearsay
 information and, simultaneously, for the compatibility with an informational conversational
 background.
German noch under reanalysis
Creators: name: Kopf-Giammanco, Martin
Publisher: name: Zenodo
Year: 2020

description: This paper investigates (i) the semantics of present day German noch in comparative
 readings. In doing so it (ii) presents experimental work on comparative noch’s
 presuppositional meaning component. In the second part, I will (iii) provide a survey
 of diachronic data from the Old German period and (iv) propose a process of
 reanalysis for the comparative reading of noch based on its temporal reading.
Geometric investigations of a vorticity model equation
Creators: name: Bauer, Martin
name: Kolev, Boris
name: Preston, Stephen C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q35, 53D25

description: This article consists of a detailed geometric study of the one-dimensional vorticity model equation $$ω_{t} + uω_{x} + 2ωu_{x} = 0, \qquad ω= H u_{x}, \qquad t\in\mathbb{R},\; x\in S^{1}\,,$$ which is a particular case of the generalized Constantin-Lax-Majda equation. Wunsch showed that this equation is the Euler-Arnold equation on $\operatorname{Diff}(S^{1})$ when the latter is endowed with the right-invariant homogeneous $\dot{H}^{1/2}$-metric. In this article we prove that the exponential map of this Riemannian metric is not Fredholm and that the sectional curvature is locally unbounded. Furthermore, we prove a Beale-Kato-Majda-type blow-up criterion, which we then use to demonstrate a link to our non-Fredholmness result. Finally, we extend a blow-up result of Castro-Córdoba to the periodic case and to a much wider class of initial conditions, using a new generalization of an inequality for Hilbert transforms due to Córdoba-Córdoba.
description: 30 pages; added references; corrected typos
Givenness marking in a mixed system: Constituent order vs. determiners
Creators: name: Simonenko, Alexandra
name: Carlier, Anna
Publisher: name: Zenodo
Year: 2020

description: This paper investigates the interaction between constituent order and the use of
 determiners as means of marking givenness, understood here as a
 non-presuppositional existential inference that arises as a result of interpreting
 a predicate with respect to a context-specified situation, in light of (a version of)
 *New ≻ Given principle of Kučerová (2012). We attribute the principle to how situation
 binding operates in clauses, instead of postulating a presupposition-introducing
 operator and test it on new quantitative data from Medieval French, a system
 employing both determiners and constituent order for
 information structuring. Our results show that the constraint in question is respected
 across the board except for the cases when it is obviated by the presence
 of a morphological trigger of existential presupposition. We also show that a game-
 theoretic simulation incorporating this constraint matches very closely historical
 French data.
Understanding community attitudes towards medical substitute decision-making
Creators: name: Sinclair, Craig
name: Remika Trieu
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: Substitute decision-making; decisional conflict; life sustaining treatment preferences; older adults; carers; factorial survey

description: This pre-registration document describes the analysis plan for data from an online factorial survey undertaken in Australia.
Statistical Physics of Adaptation
Creators: name: Perunov, Nikolai
name: Marsland, Robert
name: England, Jeremy
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: All living things exhibit adaptations that enable them to survive and reproduce in the natural environment that they inhabit. From a biological standpoint, it has long been understood that adaptation comes from natural selection, whereby maladapted individuals do not pass their traits effectively to future generations. However, we may also consider the phenomenon of adaptation from the standpoint of physics, and ask whether it is possible to delineate what the difference is in terms of physical properties between something that is well-adapted to its surrounding environment, and something that is not. In this work, we undertake to address this question from a theoretical standpoint. Building on past fundamental results in far-from-equilibrium statistical mechanics, we demonstrate a generalization of the Helmholtz free energy for the finite-time stochastic evolution of driven Newtonian matter. By analyzing this expression term by term, we are able to argue for a general tendency in driven many-particle systems towards self-organization into states formed through exceptionally reliable absorption and dissipation of work energy from the surrounding environment. Subsequently, we illustrate the mechanism of this general tendency towards physical adaptation by analyzing the process of random hopping in driven energy landscapes.
description: 23 preprint pages, 4 figures
title: Resolution of left atrial appendage thrombi: No difference between phenprocoumon and non-vitamin K-dependent oral antagonists
Creators: name: Biller, Katharina
name: Biller, Benedikt
name: Findeisen, Hannes
name: Eckardt, Lars
name: Wedekind, Horst
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 610 Medicine and health

description: Background: Atrial fibrillation is the most important risk factor for left atrial appendage (LAA) thrombi, a potentially life-threatening condition. Thrombus resolution may prevent embolic events and allow rhythm-control strategies, which have been shown to reduce cardiovascular complications. Hypothesis: There is no significant difference between phenprocoumon and non-Vitamin K-dependent oral anticoagulants (NOACs) in the resolution of LAA-thrombi in a real-world setting. Methods: Consecutive patients with LAA-thrombi from June 2013 to June 2017 were included in an observational single-center analysis. The primary endpoint was defined as the resolution of the thrombus. The observational period was 1 year. Resolutions rates in patients on phenprocoumon or NOACs were compared and the time to resolution was analyzed. Results: We identified 114 patients with LAA-thrombi. There was no significant difference in the efficacy of resolution between phenprocoumon and NOACs (p = .499) at the time of first control which took place after a mean of 58 ± 42.2 (median 48) days. At first control most thrombi were dissolved (74.6%). The analysis after set-time intervals revealed a resolution rate of 2/3 of LAA-thrombi after 8–10 weeks in the phenprocoumon and NOAC groups. After 12 weeks a higher number of thrombi had resolved in the presence of NOAC (89.3%) whereas in the presence of phenprocoumon 68.3% had resolved (p = .046). Conclusion: In this large observational study NOACs were found to be potent drugs for the resolution of LAA-thrombi. In addition, the resolution of LAA-thrombi was found to be faster in the presence of NOAC as compared to phenprocoumon.
description: Finanziert über die DEAL-Vereinbarung mit Wiley 2019-2022.
Rounding of the localization transition in model porous media
Creators: name: Schnyder, Simon K.
name: Spanner, Markus
name: Höfling, Felix
name: Franosch, Thomas
name: Horbach, Jürgen
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The generic mechanisms of anomalous transport in porous media are investigated by computer simulations of two-dimensional model systems. In order to bridge the gap between the strongly idealized Lorentz model and realistic models of porous media, two models of increasing complexity are considered: a cherry-pit model with hard-core correlations as well as a soft-potential model. An ideal gas of tracer particles inserted into these structures is found to exhibit anomalous transport which extends up to several decades in time. Also, the self-diffusion of the tracers becomes suppressed upon increasing the density of the systems. These phenomena are attributed to an underlying percolation transition. In the soft potential model the transition is rounded, since each tracer encounters its own critical density according to its energy. Therefore, the rounding of the transition is a generic occurrence in realistic, soft systems.
description: 10 pages, 12 figures
การเรียนการสอนวิชาการออกแบบระบบดิจิตอลในระบบการศึกษาทางไกล และอีเลิร์นนิ่ง
Creators: name: สราวุธ จันทร์ผง
Publisher: name: ศูนย์สนับสนุนและพัฒนาการเรียนการสอน มหาวิทยาลัยรังสิต
Year: 2009
Subjects: -

description: วารสารพัฒนาการเรียนการสอน, 3, 1, 53-59
TUNABLE POLARIZATION-MULTIPLEXED SINGLE-CAVITY DUAL-COMB
Creators: name: Rodriguez Cuevas, Alberto
name: Kabashi, Hani J
name: Stoliarov, Dmitrii
name: Sergeyev, Sergey
Publisher: name: Zenodo
Year: 2023
Subjects: optical frequency combs
dual-comb
tunable polarization
tunable polarisatoin
laser cavity
aston institute of photonic technologies

description: A poster presented at CLEO Munich 2023 about a polarization-multiplexed system capable of generating two stable optical frequency combs with tunable frequency differences in the range from 100 to 250 Hz and an extinction ratio of 16.5 dBm. The obtained results will extend the application to areas such as polarization spectroscopy and dual-comb-based polarimetry.
title: A Parent Survey on Discrete Trial Teaching Versus Naturalistic Teaching and the Use of Behavioral Terminology
Creators: name: Steele, McKenzie
Publisher: name: Utah State University
Year: 2021

description: Children receiving special education are often exposed to a variety of learning strategies. Care providers may use an array of different strategies when describing therapeutic approaches to parents (including the use of technical or layman terminology), and research has indicated that the use of technical terminology may influence individuals’ perceptions of behavior therapy. This study examined the use of behavioral and layman terminology and video models to see if it affected parents’ preference between Discrete Trial Teaching, and Naturalistic Teaching. Participants were parents with children receiving special education services between the ages of 2-5 years old. Data were collected by using a survey to record parents' responses to various questions regarding the use of behavioral interventions. The results of the study showed that parents generally preferred Naturalistic Teaching in all three conditions, the use of behavioral jargon had little impact on parent preference, and the video models appeared to have a substantial impact on parent preference.
SDN-enabled Resource Provisioning Framework for Geo-Distributed Streaming Analytics
Creators: name: Mostafaei, Habib
name: Afridi, Shafi
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::620 Ingenieurwissenschaften::620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: cluster manager
subject: geo-distributed stream analytics
subject: stream processing
subject: Software-Defined Networking
subject: SDN

description: Geographically distributed (geo-distributed) datacenters for stream data processing typically comprise multiple edges and core datacenters connected through Wide-Area Network (WAN) with a master node responsible for allocating tasks to worker nodes. Since WAN links significantly impact the performance of distributed task execution, the existing task assignment approach is unsuitable for distributed stream data processing with low latency and high throughput demand. In this paper, we propose SAFA, a resource provisioning framework using the Software-Defined Networking (SDN) concept with an SDN controller responsible for monitoring the WAN, selecting an appropriate subset of worker nodes, and assigning tasks to the designated worker nodes. We implemented the data plane of the framework in P4 and the control plane components in Python. We tested the performance of the proposed system on Apache Spark, Apache Storm, and Apache Flink using the Yahoo! streaming benchmark on a set of custom topologies. The results of the experiments validate that the proposed approach is viable for distributed stream processing and confirm that it can improve at least 1.64× the processing time of incoming events of the current stream processing systems.
EcoEvoRxiv partners with California Digital Library to re-launch preprint service on Janeway
Creators: name: Wrigley, Alainna Therese
Publisher: name: Zenodo
Year: 2022

description: The EcoEvoRxiv community and the eScholarship Publishing program at the California Digital Library (CDL) are delighted to announce a partnership to host the EcoEvoRxiv preprint server at the CDL. The re-launch of EcoEvoRxiv is scheduled to take place during International Open Access Week 2022 (October 24-30).
The evolving role of the core facility image analyst
Creators: name: Barry, David
Publisher: name: Zenodo
Year: 2023

description: Advances in microscopy have led to an unprecedented surge in image data production, resulting in datasets of ever-increasing magnitude. Handling and processing such big data can be daunting, even for seemingly straightforward tasks. Concurrently, the field of bioimage analysis is undergoing a rapid transformation, with AI and deep learning often outperforming conventional approaches for many tasks. While empowering, this shift adds complexity to developing user-friendly, reusable analysis pipelines. The importance of dedicated image analysts, collaborating closely with microscopy core facilities, is well established. They play a crucial role in creating tools and pipelines for bioscience researchers while guiding their effective use. However, in the face of massive data and AI-driven methodologies, providing user-friendly solutions becomes challenging, often requiring high-performance computing clusters to achieve reasonable throughput on a reasonable timescale. In this talk, an overview of the daily activities of a core facility image analyst will be presented, reflecting on the evolving nature of the role. The rationale guiding decisions on developing tools for different projects and collaborations will be discussed, as will associated challenges. The aim is to stimulate discussion on the changing landscape of bioimage analysis and explore how core facility staff can rise to meet the challenge of providing user-friendly, reusable tools and workflows in the era of AI and big data.
Characterization and manipulation of individual defects in insulating hexagonal boron nitride using scanning tunneling microscopy
Creators: name: Wong, Dillon
name: Velasco, Jairo
name: Ju, Long
name: Lee, Juwon
name: Kahn, Salman
name: Tsai, Hsin-Zon
name: Germany, Chad
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Zettl, Alex
name: Wang, Feng
name: Crommie, Michael F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Defects play a key role in determining the properties of most materials and, because they tend to be highly localized, characterizing them at the single-defect level is particularly important. Scanning tunneling microscopy (STM) has a history of imaging the electronic structure of individual point defects in conductors, semiconductors, and ultrathin films, but single-defect electronic characterization at the nanometer-scale remains an elusive goal for intrinsic bulk insulators. Here we report the characterization and manipulation of individual native defects in an intrinsic bulk hexagonal boron nitride (BN) insulator via STM. Normally, this would be impossible due to the lack of a conducting drain path for electrical current. We overcome this problem by employing a graphene/BN heterostructure, which exploits graphene's atomically thin nature to allow visualization of defect phenomena in the underlying bulk BN. We observe three different defect structures that we attribute to defects within the bulk insulating boron nitride. Using scanning tunneling spectroscopy (STS), we obtain charge and energy-level information for these BN defect structures. In addition to characterizing such defects, we find that it is also possible to manipulate them through voltage pulses applied to our STM tip.
description: 16 pages, 4 figures
Analysis and design of jump coefficients in discrete stochastic diffusion models
Creators: name: Meinecke, Lina
name: Engblom, Stefan
name: Hellander, Andreas
name: Lötstedt, Per
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65C40, 65C05, 65M60, 60H35, 92C05

description: In computational system biology, the mesoscopic model of reaction-diffusion kinetics is described by a continuous time, discrete space Markov process. To simulate diffusion stochastically, the jump coefficients are obtained by a discretization of the diffusion equation. Using unstructured meshes to represent complicated geometries may lead to negative coefficients when using piecewise linear finite elements. Several methods have been proposed to modify the coefficients to enforce the non-negativity needed in the stochastic setting. In this paper, we present a method to quantify the error introduced by that change. We interpret the modified discretization matrix as the exact finite element discretization of a perturbed equation. The forward error, the error between the analytical solutions to the original and the perturbed equations, is bounded by the backward error, the error between the diffusion of the two equations. We present a backward analysis algorithm to compute the diffusion coefficient from a given discretization matrix. The analysis suggests a new way of deriving non-negative jump coefficients that minimizes the backward error. The theory is tested in numerical experiments indicating that the new method is superior and minimizes also the forward error.
Time-dependent simulation and analytical modelling of electronic Mach-Zehnder interferometry with edge-states wave packets
Creators: name: Beggi, Andrea
name: Bordone, Paolo
name: Buscemi, Fabrizio
name: Bertoni, Andrea
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We compute the exact single-particle time-resolved dynamics of electronic Mach-Zehnder interferometers based on Landau edge-states transport, and assess the effect of the spatial localization of carriers on the interference pattern. The exact carrier dynamics is obtained by solving numerically the time-dependent Schroedinger equation with a suitable 2D potential profile reproducing the interferometer design. An external magnetic field, driving the system to the quantum Hall regime with filling factor one, is included. The injected carriers are represented by a superposition of edge states and their interference pattern reproduces the results of Y.Ji et al.[Nature 422, 415 (2003)]. By tuning the system towards different regimes, we find two additional features in the transmission spectra, both related to carrier localization, namely a damping of the Aharonov-Bohm oscillations with increasing difference in the arms length, and an increased mean transmission that we trace to the energy-dependent transmittance of quantum point contacts. Finally, we present an analytical model, also accounting for the finite spatial dispersion of the carriers, able to reproduce the above effects.
description: two-columns, 12 pages, 9 figures; added 10 refs.; main text modified; corrected few typos; added 3 figures of Supplementary Data
Child Education Through Animation: An Experimental Study
Creators: name: Islam, Md Baharul
name: Ahmed, Arif
name: Islam, Md Kabirul
name: Shamsuddin, Abu Kalam
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Teachers have tried to teach their students by introducing text books along with verbal instructions in traditional education system. However, teaching and learning methods could be changed for developing Information and Communication Technology. It's time to adapt students with interactive learning system so that they can improve their learning, catching, and memorizing capabilities. It is indispensable to create high quality and realistic leaning environment for students. Visual learning can be easier to understand and deal with their learning. We developed visual learning materials in the form of video for students of primary level using different multimedia application tools. The objective of this paper is to examine the impact of students abilities to acquire new knowledge or skills through visual learning materials and blended leaning that is integration of visual learning materials with teachers instructions. We visited a primary school in Dhaka city for this study and conducted teaching with three different groups of students, (i) teacher taught students by traditional system on same materials and marked level of students ability to adapt by a set of questions, (ii) another group was taught with only visual learning material and assessment was done with 15 questionnaires, (iii) the third group was taught with the video of solar system combined with teachers instructions and assessed with the same questionnaires. This integration of visual materials with verbal instructions is a blended approach of learning. The interactive blended approach greatly promoted students ability of acquisition of knowledge and skills. Students response and perception were very positive towards the blended technique than the other two methods. This interactive blending leaning system may be an appropriate method especially for school children.
Tomography from Entanglement
Creators: name: Lin, Jennifer
name: Marcolli, Matilde
name: Ooguri, Hirosi
name: Stoica, Bogdan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Ryu-Takayanagi formula relates the entanglement entropy in a conformal field theory to the area of a minimal surface in its holographic dual. We show that this relation can be inverted for any state in the conformal field theory to compute the bulk stress-energy tensor near the boundary of the bulk spacetime, reconstructing the local data in the bulk from the entanglement on the boundary. We also show that positivity, monotonicity, and convexity of the relative entropy for small spherical domains between the reduced density matrices of any state and of the ground state of the conformal field theory, follow from positivity conditions on the bulk matter energy density. We discuss an information theoretical interpretation of the convexity in terms of the Fisher metric.
description: 6 pages
A note on the resolution of the entropy discrepancy
Creators: name: Huang, Yue
name: Miao, Rong-Xin
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It was found by Hung, Myers and Smolkin that there is entropy discrepancy for the CFTs in 6-dimensional space-time, between the field theoretical and the holographic analysis. Recently, two different resolutions to this puzzle have been proposed. One of them suggests to utilize the anomaly-like entropy and the generalized Wald entropy to resolve the HMS puzzle, while the other one initiates to use the entanglement entropy which arises from total derivative terms in the Weyl anomaly to explain the HMS mismatch. We investigate these two proposals carefully in this note. By studying the CFTs dual to Einstein gravity, we find that the second proposal can not solve the HMS puzzle. Moreover, the Wald entropy formula is not well-defined on horizon with extrinsic curvatures, in the sense that, in general, it gives different results for equivalent actions.
description: 12 pages, no figures, accepted by PLB
Mediterranean Diet in Older Irish Adults: Prevalence, Patterns, Predictors and Pertinence
Creators: name: Norton, Catherine
name: Clarke, Elaine
name: Marcos-Pardo, Pablo J
name: Tierney, Audrey
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 3210
subject: Nutrition and dietetics
classificationCode: 4206
subject: Public health
classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: The Mediterranean diet (MD) shows the strongest evidence in support of healthy aging and prevention of age-related diseases. It is associated with a decreased risk of chronic disease, such as cardiovascular disease, obesity, hypertension, diabetes mellitus and cognitive disease. Given the health-promoting aspects of this diet, we conducted a secondary analysis of data from the LifeAge study (“Promoting the shift: sedentary Lifestyle towards active Ageing-LifeAge” Project No 603121-EPP-1-2018-1-ES-SPO-SCP) with the primary aim to determine the proportion of older Irish adults adhering to the MD and to examine the association between adherence to the MD (assessed using the Mediterranean Diet Adherence Screener (MEDAS) scoring tool) and anthropometric risk factors of non-communicable diseases. Of the 131 eligible participants (71.8% female, n = 94) (medically well, aged > 50 years and physically independent) (mean age = 66.2 ± 6.5 years), the mean cumulative MD score across the cohort was 5.8 ± 2.2, with 41% classified as moderate-to-high MD adherers (scoring > 7 MEDAS). Females had a significantly higher score compared to males (female 6.24 ± 1.98; male 4.86 ± 2.53; p = 0.002). Age (y), waist circumference (cm) and waist–hip ratio (WHR) each had a significant (p < 0.05) weak and negative correlation with MD score (r = −0.193, −0.240, −0.284, respectively). Visceral fat level had a significant (p < 0.05) moderate and negative correlation with MD score (r = −0.327). This analysis is the first to assess adherence to the MD in older Irish adults. MD adherence was lower in the Irish older cohort than that reported in older adults in Mediterranean regions and was adhered to more by females and those with a more favourable anthropometric profile. The health-promoting aspects of the diet are evident in non-Mediterranean regions as is demonstrated by the lesser incidence of some non-communicable diseases in moderate-to-high adherers. With the evidence of the protective effects of the MD, external to Mediterranean regions, it would be helpful to establish limitations to adherence, especially in aging populations living in non-Mediterranean regions.
Z-score-based modularity for community detection in networks
Creators: name: Miyauchi, Atsushi
name: Kawase, Yasushi
Publisher: name: arXiv
Year: 2015
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Identifying community structure in networks is an issue of particular interest in network science. The modularity introduced by Newman and Girvan [Phys. Rev. E 69, 026113 (2004)] is the most popular quality function for community detection in networks. In this study, we identify a problem in the concept of modularity and suggest a solution to overcome this problem. Specifically, we obtain a new quality function for community detection. We refer to the function as Z-modularity because it measures the Z-score of a given division with respect to the fraction of the number of edges within communities. Our theoretical analysis shows that Z-modularity mitigates the resolution limit of the original modularity in certain cases. Computational experiments using both artificial networks and well-known real-world networks demonstrate the validity and reliability of the proposed quality function.
description: 8 pages, 10 figures
title: Alternative strategies to by-pass the plant-based Azadirachtin-A production
Creators: name: Spieth, Peter
name: Lohse, Rieke
name: Bednarz, Hanna
name: Kleeberg, Hubertus
name: Niehaus, Karsten
name: Patel, Anant V.
Publisher: name: Julius Kühn-Institut
Year: 2016
Subjects: subject: azadirchtin-A
subject: endophytes
subject: plant cell cultures
subject: high-throughput microbioreactor

description: Julius-Kühn-Archiv 453
description: All parts of Neem (Azadirachta indica A. Juss) show a broad spectrum efficacy against insect pests including insecticidal, anti-feedant or insect repellent activities. Several studies have shown that plant cell cultures can produce azadirachtins. We induced more than 40 novel Neem cell lines in modified Murashige and Skoog (MS) media containing different concentrations of auxins and cytokinins. To enhance the Azadirachtin production from 1 mg/l, it was necessary to optimize the media composition separately for biomass and secondary metabolite production. In light of this complex challenge we used our novel fully automated high-throughput microbioreactor system that allows us a fast and controlled batch and fedbatch screening in 48-well microtiter plates. There is increasing evidence that plants like Azadirachta indica contain endophytes which are able to colonize internal plant tissue without causing visible disease symptoms. The estimated high species diversity of endophytes suggests a rich and almost untapped source of new secondary metabolites. We isolated more than 340 endophytes from various plant tissues and tested if they were able to produce Azadirachtin-A. Here, we present data on isolation of endophytes and induction of callus as well as first results of our microbioreactor system.
Third order nonlinearity of graphene: effects of phenomenological relaxation and finite temperature
Creators: name: Cheng, J. L.
name: Vermeulen, N.
name: Sipe, J. E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the effect of phenomenological relaxation parameters on the third order optical nonlinearity of doped graphene by perturbatively solving the semiconductor Bloch equation around the Dirac points. An analytic expression for the nonlinear conductivity at zero temperature is obtained under the linear dispersion approximation. With this analytic formula as starting point, we construct the conductivity at finite temperature and study the optical response to a laser pulse of finite duration. We illustrate the dependence of several nonlinear optical effects, such as third harmonic generation, Kerr effects and two photon absorption, parametric frequency conversion, and two color coherent current injection, on the relaxation parameters, temperature, and pulse duration. In the special case where one of the electric fields is taken as a dc field, we investigate the dc-current and dc-field induced second order nonlinearities, including dc-current induced second harmonic generation and difference frequency generation.
description: 23+ pages, 10 figures. In this version we correct a sign typo in Eq. (25), for which we thank the discussion in the work http://arxiv.org/abs/1506.00534v3