cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nonlinear acoustic and microwave absorption in glasses
Creators: name: Kirkengen, M.
name: Galperin, Yu. M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A theory of weakly-nonlinear low-temperature relaxational absorption of acoustic and electromagnetic waves in dielectric and metallic glasses is developed. Basing upon the model of two-level tunneling systems we show that the nonlinear contribution to the absorption can be anomalously large. This is the case at low enough frequencies, where freqeuency times the minimal relaxation time for the two-level system are much less than one. In dielectric glasses, the lowest-order nonlinear contribution is proportional to the wave's intensity. It is negative and exhibits anomalous frequency and temperature dependencies. In metallic glasses, the nonlinear contribution is also negative, and it is proportional to the square root of the wave's intensity and to the frequency. Numerical estimates show that the predicted nonlinear contribution can be measured experimentally.
Prepackaging California Grapes at Shipping Point
Creators: name: Hale, Philip W.
name: Stokes, Donald R.
name: Hale, Philip W.
name: Stokes, Donald R.
Publisher: name: Unknown
Year: 1960
Subjects: subject: Crop Production/Industries
subject: Labor and Human Capital
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Research and Development/Tech Change/Emerging Technologies

description: Excerpts from the report Preface: This report is one of a number evaluating new packages and shipping containers and new methods of packing fruits and vegetables in them. The study on which the report is based is part of a broad program of research aimed at improving marketing efficiency and expanding markets for farm products. Retailers say they want to buy prepackaged California table grapes. Growers have hesitated to prepackage because of many unanswered questions, especially those concerning costs and the ability of consumer packages to protect highly perishable grapes in shipment to distant markets. This study was undertaken to find answers to these questions.
Numerical study of PbTe-Pb hybrid nanowires for engineering Majorana zero modes
Creators: name: Cao, Zhan
name: Liu, Dong E.
name: He, Wan-Xiu
name: Liu, Xin
name: He, Ke
name: Zhang, Hao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Epitaxial semiconductor-superconductor (SM-SC) hybrid nanowires are potential candidates for implementing Majorana qubits. Recent experimental and theoretical works show that charged impurities in SM remain a major problem in all existing hybrid nanowires, in which the SM is either InAs or InSb while the SC is mainly Al. Here, we theoretically validate the recently proposed PbTe-Pb hybrid nanowire as a potential candidate for Majorana devices. By studying the electrostatic and electronic properties of PbTe nanowires, we demonstrate that the huge dielectric constant of PbTe endows itself a high tolerance of charged impurity, which is a potential advantage over InAs and InSb nanowires. Moreover, we find that the effective axial Landé $g$ factor and Rashba spin-orbit coupling strength of PbTe nanowires are comparable to those of InAs nanowires. The conceivable merits of using Pb as the SC are (i) Pb has a larger superconducting gap, higher critical temperature, and higher parallel critical magnetic field than those of Al; (ii) a superconducting gap comparable with those of InAs-Al and InSb-Al can be induced in PbTe-Pb even by a weak coupling between Pb and PbTe, which simultaneously relieves the adverse renormalization and induced disorder effects on SM from SC; and (iii) Pb film can be grown on PbTe with a thin buffer CdTe layer in between, solving the lattice mismatch problem as an important source of disorder. In the presence of a parallel magnetic field, we show that the typical BdG energy spectrum and tunneling spectroscopy of PbTe-Pb resemble those of InAs and InSb based hybrid nanowires exposed to a tilting magnetic field, as a result of the highly anisotropic Landé $g$ factors of PbTe nanowires. The calculated topological phase diagrams of PbTe-Pb indicate that the multivalley character of PbTe makes it easier than InAs and InSb to access topological superconducting phases.
description: 21 pages, 12 figures, and 4 tables
Three-frequency resonances in dynamical systems
Creators: name: Calvo, O.
name: Cartwright, J. H. E.
name: Gonzalez, D. L.
name: Piro, O.
name: Rosso, O.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We investigate numerically and experimentally dynamical systems having three interacting frequencies: a discrete mapping (a circle map), an exactly solvable model (a system of coupled ordinary differential equations), and an experimental device (an electronic oscillator). We compare the hierarchies of three-frequency resonances we find in each of these systems. All three show similar qualitative behaviour, suggesting the existence of generic features in the parameter-space organization of three-frequency resonances.
description: See home page http://lec.ugr.es/~julyan
Towards Diverse Perspective Learning with Selection over Multiple Temporal Poolings
Creators: name: Seong, Jihyeon
name: Kim, Jungmin
name: Choi, Jaesik
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In Time Series Classification (TSC), temporal pooling methods that consider sequential information have been proposed. However, we found that each temporal pooling has a distinct mechanism, and can perform better or worse depending on time series data. We term this fixed pooling mechanism a single perspective of temporal poolings. In this paper, we propose a novel temporal pooling method with diverse perspective learning: Selection over Multiple Temporal Poolings (SoM-TP). SoM-TP dynamically selects the optimal temporal pooling among multiple methods for each data by attention. The dynamic pooling selection is motivated by the ensemble concept of Multiple Choice Learning (MCL), which selects the best among multiple outputs. The pooling selection by SoM-TP's attention enables a non-iterative pooling ensemble within a single classifier. Additionally, we define a perspective loss and Diverse Perspective Learning Network (DPLN). The loss works as a regularizer to reflect all the pooling perspectives from DPLN. Our perspective analysis using Layer-wise Relevance Propagation (LRP) reveals the limitation of a single perspective and ultimately demonstrates diverse perspective learning of SoM-TP. We also show that SoM-TP outperforms CNN models based on other temporal poolings and state-of-the-art models in TSC with extensive UCR/UEA repositories.
description: 17 pages, 9 figures
Big Data in Financial Research: Applications in Equity Trading
Creators: name: Pantisa Pavabutr
name: Siraprapa Watakit
Publisher: name: คณะพาณิชยศาสตร์และการบัญชี มหาวิทยาลัยธรรมศาสตร์
Year: 2019
Subjects: Big Data
Financial Machine Learning
Supervised Learning
Unsupervised Learning
Limit Order Book
Text Mining
Sentiment Index

description: วารสารบริหารธุรกิจ JBA, 42, 163 (ก.ค.-ก.ย. 62), 46
Comment on: Topological Invariants, instantons, and the chiral anomaly on spaces with torsion
Creators: name: Kreimer, Dirk
name: Mielke, Eckehard W.
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In Riemann-Cartan spacetimes with torsion only its axial covector piece $A$ couples to massive Dirac fields. Using renormalization group arguments, we show that besides the familiar Riemannian term only the Pontrjagin type four-form $dA\wedge dA$ does arise additionally in the chiral anomaly, but not the Nieh-Yan term $d^\star A$, as has been claimed in a recent paper [PRD 55, 7580 (1997)].
description: 4p, latex, Comment to appear in Phys Rev, references updated
Critical Behavior of Nuclear-Spin Diffusion in GaAs/AlGaAs Heterostructures near Landau Level Filling ν=1
Creators: name: Bayot, V.
name: Grivei, E.
name: Beuken, J. -M.
name: Melinte, S.
name: Shayegan, M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Thermal measurements on a GaAs/AlGaAs heterostructure reveal that the state of the confined two-dimensional electrons dramatically affects the nuclear-spin diffusion near Landau level filling factor ν=1. The experiments provide quantitative evidence that the sharp peak in the temperature dependence of heat capacity near ν=1 is due to an enhanced nuclear-spin diffusion from the GaAs quantum wells into the AlGaAs barriers. We discuss the physical origin of this enhancement in terms the possible Skyrme solid-liquid phase transition.
description: 1 LateX file, 3 figures, submitted
Quantifying the Relative Importance of Sand Deposition and Dune Grasses to Carbon Storage in US Central Atlantic Coast Dunes
Creators: name: Jay, Katya R.
name: Stepanek, John
name: Hacker, Sally D.
name: Moore, Laura J.
name: Ruggiero, Peter
name: Hagen, Cedric J.
Publisher: name: Springer Nature
Year: 2025

description:
Coastal ecosystems such as mangroves, salt marshes, and seagrasses sequester large amounts of carbon per unit area due to their high productivity and sediment accumulation rates. However, only a handful of studies have examined carbon sequestration in coastal dunes, which are shaped by biophysical feedback between aeolian sediment transport and burial-tolerant vegetation. The goal of this study was to measure carbon storage and identify the factors that influence its variability along the foredunes of the US Outer Banks barrier islands of North Carolina. Specifically, differences in carbon stocks (above- and belowground biomass and sand), dune grass abundance, and sand supply were measured among islands, cross-shore dune profile locations, and dune grass species. Carbon varied among aboveground grass biomass (0.1 ± 0.1 kg C m−2), belowground grass biomass (1.1 ± 1.6 kg C m−3), and sand (0.9 ± 0.6 kg C m−3), with the largest amount in belowground grass stocks. Aboveground grass carbon stocks were comparable to those in eelgrass beds and salt marshes on a per-area basis, while sediment carbon values in our study system were lower than those in other coastal systems, including other dune locations. Additionally, sand carbon density was positively related to patterns in dune sand supply and grass abundance, reflecting a self-reinforcing vegetation-sediment feedback at both high and low sand accumulation rates.
Angular and radial stabilities of spontaneously scalarized black holes in the presence of scalar-Gauss-Bonnet couplings
Creators: name: Minamitsuji, Masato
name: Mukohyama, Shinji
name: Tsujikawa, Shinji
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the linear stability of spontaneously scalarized black holes (BHs) induced by a scalar field $ϕ$ coupled to a Gauss-Bonnet (GB) invariant $R_{\rm GB}^2$. For the scalar-GB coupling $ξ(ϕ)=(η/8) (ϕ^2+αϕ^4)$, where $η$ and $α$ are constants, we first show that there are no angular Laplacian instabilities of even-parity perturbations far away from the horizon for large multipoles $l \gg 1$. The deviation of angular propagation speeds from the speed of light is largest on the horizon, whose property can be used to put constraints on the model parameters. For $α\gtrsim -1$, the region in which the scalarized BH is subject to angular Laplacian instabilities can emerge. Provided that $α\lesssim -1$ and $-1/2<αϕ_0^2<-0.1155$, where $ϕ_0$ is the field value on the horizon with a unit of the reduced Planck mass $M_{\rm Pl}=1$, there are scalarized BH solutions satisfying all the linear stability conditions throughout the horizon exterior. We also study the stability of spontaneously scalarized BHs in scalar-GB theories with a nonminimal coupling $-βϕ^2 R/16$, where $β$ is a positive constant and $R$ is a Ricci scalar. As the amplitude of the field on the horizon approaches an upper limit $|ϕ_0|=4/\sqrtβ$, one of the squared angular propagation speeds $c_{Ω-}^2$ enters the instability region $c_{Ω-}^2<0$. So long as $|ϕ_0|$ is smaller than a maximum value determined for each $β$ in the range $β>5$, however, the scalarized BHs are linearly stable in both angular and radial directions.
description: 21 pages, 5 figures
Brain Electrical Stimulation for Animal Navigation
Creators: name: Ahmadi, Amirmasoud
name: Seghinsara, Sepideh Farakhor
name: Daliri, Mohammad Reza
name: Shalchyan, Vahid
Publisher: name: arXiv
Year: 2019
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: The brain stimulation and its widespread use is one of the most important subjects in studies of neurophysiology. In brain electrical stimulation methods, following the surgery and electrode implantation, electrodes send electrical impulses to the specific targets in the brain. The use of this stimulation method is provided therapeutic benefits for treatment chronic pain, essential tremor, Parkinsons disease, major depression, and neurological movement disorder syndrome (dystonia). One area in which advancements have been recently made is in controlling the movement and navigation of animals in a specific pathway. It is important to identify brain targets in order to stimulate appropriate brain regions for all the applications listed above. An animal navigation system based on brain electrical stimulation is used to develop new behavioral models for the aim of creating a platform for interacting with the animal nervous system in the spatial learning task. In the context of animal navigation the electrical stimulation has been used either as creating virtual sensation for movement guidance or virtual reward for movement motivation. In this paper, different approaches and techniques of brain electrical stimulation for this application has been reviewed. Keywords: Rat Robot, Brain Computer Interface, Electrical Stimulation, Cyborg Intelligence, Brain to Brain Interface
description: in Farsi
Cosmological Supergravity from a Massive Superparticle and Super Cosmological Black Holes
Creators: name: Knutt-Wehlau, M. E.
name: Mann, R. B.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We describe in superspace a classical theory of two dimensional $(1,1)$ dilaton supergravity with a cosmological constant, both with and without coupling to a massive superparticle. We give general exact non-trivial superspace solutions for the compensator superfield that describes the supergravity in both cases. We then use these compensator solutions to construct models of two-dimensional supersymmetric cosmological black holes.
description: 20 pages, Latex
Physical black holes in fourth-order gravity
Creators: name: Murk, Sebastian
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The existence of black holes is a central prediction of general relativity and thus serves as a basic consistency test for modified theories of gravity. In spherical symmetry, only two classes of dynamic solutions are compatible with the formation of an apparent horizon in finite time of a distant observer. Moreover, the formation of black holes follows a unique scenario involving both types of solutions. To be compatible with their existence, any self-consistent theory of modified gravity must satisfy several constraints. We derive properties of the modified gravity terms of f(R) and generic fourth-order gravity theories and find that they naturally accommodate both classes of solutions. Consequently, the observation of an apparent horizon by itself may not suffice to distinguish between general relativity and modifications including up to fourth-order derivatives in the metric.
description: 10 pages, 2 tables. Published version. Comments welcome!
Diagnosis of microbial keratitis using smartphone-captured images; a deep-learning model
Creators: name: Aminizade, Mehdi
name: Quiroz-Casian, Natalia
name: Yousefi, Siamak
name: Cheung, Albert Y.
name: Soleimani, Mohammad
name: Esmaili, Kosar
name: Ahmadi, Mohamad Javad
name: Kirakosyan, Artak
name: Lee, Isaiah
name: De Alba, Margarita
name: Cheraqpour, Kasra
name: Tomaras, Nicholas
name: Rahdar, Amir
Publisher: name: Springer Nature
Year: 2025

description:
Background Microbial keratitis (MK) poses a substantial threat to vision and is the leading cause of corneal blindness. The outcome of MK is heavily reliant on immediate treatment following an accurate diagnosis. The current diagnostics are often hindered by the difficulties faced in low and middle-income countries where there may be a lack of access to ophthalmic units with clinical experts and standardized investigating equipment. Hence, it is crucial to develop new and expeditious diagnostic approaches. This study explores the application of deep learning (DL) in diagnosing and differentiating subtypes of MK using smartphone-captured images. Materials and methods The dataset comprised 889 cases of bacterial keratitis (BK), fungal keratitis (FK), and acanthamoeba keratitis (AK) collected from 2020 to 2023. A convolutional neural network-based model was developed and trained for classification. Results The study demonstrates the model’s overall classification accuracy of 83.8%, with specific accuracies for AK, BK, and FK at 81.2%, 82.3%, and 86.6%, respectively, with an AUC of 0.92 for the ROC curves. Conclusion The model exhibits practicality, especially with the ease of image acquisition using smartphones, making it applicable in diverse settings.
Additional file 11: of The first draft genomes of the ant Formica exsecta, and its Wolbachia endosymbiont reveal extensive gene transfer from endosymbiont to host
Creators: name: Kishor Dhaygude
name: Abhilash Nair
name: Johansson, Helena
name: Wurm, Yannick
name: SundstrĂśm, Liselotte
Publisher: name: figshare
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 60506 Virology

description: Figure S3. Schematic representation of cifA andÂ cifB gene locations on the wFex genome assembly. (PDF 27 kb)
Systematic shell-model study of structure and isomeric states in $^{204-213}$Bi isotopes
Creators: name: Shukla, Sakshi
name: Srivastava, Praveen C.
name: Patel, Deepak
Publisher: name: arXiv
Year: 2024
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In this work, we have performed systematic shell-model calculations for Bi isotopes with $A=$ 204-213 using KHH7B and KHM3Y effective interactions. We have reported yrast and non-yrast shell-model states corresponding to the available experimental data. From the comparison with the experimental data, we could assign spin and parity of several unconfirmed states. We have also calculated electromagnetic properties and compared them with the available experimental data and predicted where experimental data are not available. This study also includes a detailed discussion of multiple isomeric states based on computed shell-model configurations and their respective half-lives.
description: Journal of Physics G: Nuclear and Particle Physics (2024)
Additional file 1 of Nonspecific chest pain and hospital revisits within 7 days of care: variation across emergency department, observation and inpatient visits
Creators: name: Martsolf, Grant R.
name: Teryl K. Nuckols
name: Fingar, Kathryn R.
name: Barrett, Marguerite L.
name: Stocks, Carol
name: Owens, Pamela L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: 60506 Virology
subject: FOS: Biological sciences

description: Additional file 1.Appendix Table S1. Risk Adjustment Method and Conditions at the Revisit by Type of Index Visit.
title: Entwicklung eines Steuermoduls auf Mikrocontrollerbasis für ein modulares Cantilever-Messsystem: Bachelorarbeit
Creators: name: Tan, Ditian
Publisher: name: Institut für Halbleitertechnik
Year: 2021
Subjects: subject: 621.3

description: Am Institut für Halbleitertechnik der TU Braunschweig werden MEMS-Sensoren entwickelt, welche auf Silizium-Cantilevern mit integrierter piezoresistiver Messelektronik basieren, und Anwendung in der Partikel-, Gas- und Oberflächenmesstechnik finden[2][26][25]. Die Verschiebung der Resonanzfrequenz wird bei diesen Sensoren ausgewertet. Die Messung der Resonanzfrequenz erfolgt hierbei durch eine Phasenregelschleifen (PLL). Im Fall der Partikelmesstechnik ist das Prinzip, dass die Anhaftung von Partikeln an dem Cantilever die Masse des Cantilevers erhöht, wodurch die Resonanzfrequenz sinkt. In einer vorherigen Arbeit[8] wurde eine Messelektronik entwickelt, die alle Peripherien wie Signalgeneratoren, Signalverarbeitung, PLL und Mikrocontroller auf einer Platine integriert. Dieser Ansatz hat jedoch den Nachteil, dass Probleme eines einzigen Moduls die gesamte Platine unbrauchbar machen. Außerdem ist der Aufwand bei einer so hoch integrierten Platine Fehler zu finden und diese zu beheben hoch. Deshalb wird in dieser Arbeit ein anderer Ansatz verfolgt: Die Peripherien auf mehrere kleine Platinen zu verteilen, sie einzeln zu entwickeln und testen und schließlich zu verbinden. Diese Bachelorarbeit hat das Ziel, ein neues Steuermodul dieser neuen Messelektronik zu entwickeln, um die Geschwindigkeit, Genauigkeit und Flexibilität der Messung zu erhöhen.
Additional file 10: of The first draft genomes of the ant Formica exsecta, and its Wolbachia endosymbiont reveal extensive gene transfer from endosymbiont to host
Creators: name: Kishor Dhaygude
name: Abhilash Nair
name: Johansson, Helena
name: Wurm, Yannick
name: Sundstrรถm, Liselotte
Publisher: name: figshare
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Figure S2. Venn diagram displaying the overlap in orthologous genes across CI-inducing and mutualist Wolbachia species. (PDF 98 kb)
title: Multiphysics Simulation elektrothermisch angeregter, piezoresistiver, resonanter MEMSSensoren für Kontaktresonanz-Anwendungen: Bachelorarbeit
Creators: name: Eisele, Lukas
Publisher: name: Institut für Halbleitertechnik
Year: 2020
Subjects: subject: 621.3

description: In der Industrie werden Sensoren benötigt, die besonders im Inline-Betrieb Eigenschaften ermitteln, die sonst nur durch Labormessungen zugänglich sind. Taktile Sensoren gehören zu dieser Art neuer Produktionssensoren, insbesondere die sogenannten „Mikrotaster“. Ihr Aufgabenbereich ist die Inline Überprüfung von Materialkennwerten, wie der Oberflächenrauheit und dem Elastizitätsmodul. So ist z.B. geplant diese Art von Sensoren für die Produktionsüberwachung von Beschichtungen von Walzen und der Qualität von Oberflächen nach deren Bearbeitung einzusetzen. Die üblichen Labormethoden für die Bestimmung des Elastizitätsmoduls sind die Bestimmung durch einen Zugversuch [23] oder durch Nanoidentation [22]. Diese Kennwertermittlungen sind jedoch zerstörende Werkstoffprüfungen und daher nicht für die laufende Überwachung von Produktionsergebnissen geeignet. Eine nicht-zerstörendeMessmethode ist die akustisch-mechanische Korrelation der Schallgeschwindigkeit im zu prüfenden Material mit dem Zug-E-Modul [10]. Allerdings ist diese Korrelation durch die Temperaturabhängigkeit der Querkontraktionszahl des Materials fehlerbehaftet. Eine besonders präzise, schnell arbeitende und nicht-zerstörende Methode der messenden Mikrotaster ist die sogenannte „Kontaktresonanz-Spektroskopie“. Sie stellt ein mechanisches Untersuchungsverfahren dar, welches auf der sich verändernden Resonanzfrequenz eines in Schwingung versetzten Sensors bei Kontakt mit einer Probe basiert. Zuerst 1994 von der Yamanaka- und Arnold Group beschrieben [20, 24], ermöglicht diese Methode Rückschlüsse auf die mechanischen Eigenschaften des Probenmaterials. Am Institut für Halbleitertechnik (IHT) der Technischen Universität Braunschweig wird aktuell an diesen Mikrotastern geforscht. So wird im Rahmen des Projekts „MicroProbes“ u.a. ein neuer Mikrotaster entwickelt. Dieser verwendetet zurzeit eine Phase-Lock-Loop (PLL) Schaltung, um die Resonanzfrequenz zu ermitteln. Da es sich bei diesem Verfahren um einen Regelkreis handelt, sind die Messgeschwindigkeiten begrenzt. Es soll daher ein neues Messverfahren, das Dual AC Resonance Tracking (DART) Verfahren, welches schnellere Messgeschwindigkeiten verspricht, für den Mikrotaster ausgelegt werden. Um das Verhalten dieses Mikrotasters für aktuelle und künftige Zwecke beschreiben zu können, ist die Entwicklung eines möglichst universal einsetzbaren Simulations-Modells erforderlich. Zudem soll das DART Messverfahren getestet und ausgelegt werden. In der vorliegenden Arbeit sind der Aufbau, die Verifizierung und die anschließende prognostische Nutzung des Modells beschrieben.
title: Differentialdiagnose des Aderhautmelanoms
Creators: name: Pateronis, Konstantinos
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Das Aderhautmelanom ist der häufigste intraokulare bösartige Tumor im Erwachsenalter. Die Differentialdiagnose des Aderhautmelanoms ist nicht immer einfach. Die Diagnose des Aderhautmelanoms wird bei den meisten Fällen durch die klinische Untersuchung durchgeführt. Es gibt aber[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 27. Jahrestagung der Regionalgesellschaft der Augenärzte Sachsen-Anhalts und Thüringens e. V.
title: Development of a signal generator for a modular cantilever measurement setup: Bachelorarbeit
Creators: name: Mao, Xinli
Publisher: name: Institut für Halbleitertechnik
Year: 2021
Subjects: subject: 621.3

description: At the Institute for Semiconductor Technology of TU Braunschweig, resonant microelectromechanical systems (MEMS) sensors are developed for particle, gas and surface measurement technology. [8][9][10] They are based on silicon cantilevers with integrated piezoresistive measuring electronics. With these sensors, the shift in the resonance frequency is evaluated. The resonance frequency is measured using a phase locked loop (PLL). In previous work, phase locked loop (PLL) circuits were already developed, but they showed deficits in terms of their speed, accuracy and flexibility. Therefore, the signal generator of a new modular measuring system is to be developed in this thesis. This paper uses direct digital synthesizer (DDS) technology to develop a signal generator. The advantages of DDS are continuous phase conversion, fast frequency conversion speed, high frequency resolution, low phase noise, high frequency stability, easy control, etc. DDS technology is widely used in signal generators, communication systems and other fields. At the same time, MCUs (microcontrollers) have strong data processing capabilities and control capabilities, and are widely used in electronic equipment. This paper introduces a design method of a signal generator, to generate high-quality FM signals.
A new cuprous coordinating polymer constructed by bridging 2,2-(1,4-butanediyl)bis-1,3-benzoxazole ligand: synthesis, structure, and properties
Creators: name: Wang, Cong
name: Qu, Yao
name: Wu, Yancong
name: Shen, Kesheng
name: Zhao, Kun
name: Li, Chuang
name: Huang, Guozhen
name: Han, Xintong
name: Wu, Huilu
Publisher: name: Taylor & Francis
Year: 2019
Subjects: Biophysics
Biochemistry
Physical Sciences not elsewhere classified
Medicine
Biotechnology
Chemical Sciences not elsewhere classified

description: A new cuprous coordination polymer (CP) with 2,2-(1,4-butanediyl)bis-1,3-benzoxazole (BBO) and triphenylphosphine sulfide (SPPh3) ligands, {[Cu(BBO)(SPPh3)]ClO4}n (1), has been characterized by elemental analysis, UV-Vis, infrared spectra and single-crystal X-ray diffraction. The structural analysis revealed that 1 exhibits a one-dimensional CP and is in a three-coordinate slightly distorted trigonal planar environment in which the total angle around the copper(I) atom is 359.2°. Solid luminescence properties investigation showed that 1 had one emission peak at 428 nm (λex = 355 nm, blue luminescence), which may be attributed to MLCT [(d10(Cu)→π*]. The cyclic voltammogram of 1 represents irreversible Cu2+/Cu+ pairs. The antioxidant activity experiment shows that 1 has the potential ability to scavenge hydroxyl and superoxide radical in vitro studies.
Obtusipalpis pardalis Hampson 1896
Creators: name: Mbata, Keith J.
name: Prins, Jurate De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Crambidae
Obtusipalpis
Obtusipalpis pardalis

description: Obtusipalpis pardalis Hampson, 1896a
COMMON NAME(S): Snow Leopard.
SYNONYM(S): None.
IUCN STATUS: Not Evaluated (NE).
DISTRIBUTION: Democratic Republic of Congo, Ethiopia, Gabon, Kenya, Liberia, Mozambique, Namibia, South Africa, Tanzania, Zambia, Zimbabwe.
LOCALITY IN ZAMBIA: Livingstone, in Southern Province; Senanga, in Western Province; Lusaka, in Lusaka Province.
LARVAL HOSTPLANT(S): An unidentified Moraceae species (i.e. Ficus sp.) and a species in the citrus family Rutaceae, i.e. Euodia latifolia DC. are reported as larval foodplants of the taxon.
SOURCES: African Moths 2019; Catalogue of life 2017; De Prins & De Prins 2022; Pinhey 1975.
Genus Orphanostigma Warren, 1890
description: Published as part of Mbata, Keith J. & Prins, Jurate De, 2023, Annotated checklist of moths of Zambia (Insecta: Lepidoptera), pp. 1-503 in Zootaxa 5354 (1) on page 110, DOI: 10.11646/zootaxa.5354.1.1, http://zenodo.org/record/10130434
title: Enukleation bei Ablatio retinae non sanata und vaskularisiertem Hornhautpannus – Pathologische Beurteilung nötig?
Creators: name: Muranyi, David
name: Fiorentzis, M.
name: Wienrich, R.
name: Dießel, L.
name: Viestenz, A.
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Ein Pannus cornae beschreibt einen Einschub von Bindegewebe zwischen das Hornhautepithel und die Bowman-Membran. Hervorgerufen wird er durch eine unspezifische sekundäre Reaktion verschiedener Hornhauterkrankungen. Bei starker Ausprägung kann der Einblick in das Augeninnere vollständig[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 27. Jahrestagung der Regionalgesellschaft der Augenärzte Sachsen-Anhalts und Thüringens e. V.
Neutrino and $γ$-ray Emission from the Core of NGC1275 by Magnetic Reconnection: GRMHD Simulations and Radiative Transfer/Particle Calculations
Creators: name: Rodríguez-Ramírez, J. C.
name: Pino, E. M. de Gouveia Dal
name: Batista, R. Alves
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Very high energy (VHE) emission has been detected from the radio galaxy NGC1275, establishing it as a potential cosmic-ray (CR) accelerator and a high energy neutrino source. We here study neutrino and $γ$-ray emission from the core of NGC1275 simulating the interactions of CRs assumed to be accelerated by magnetic reconnection, with the accreting plasma environment. To do this, we combine (i) numerical general relativistic (GR) magneto-hydrodynamics (MHD), (ii) Monte Carlo GR leptonic radiative transfer and, (iii) Monte Carlo interaction of CRs. A leptonic emission model that reproduces the SED in the [$10^3$-$10^{10.5}$] eV energy range is used as the background target for photo-pion interactions+electromagnetic cascading. CRs injected with the power-law index \k{appa}=1.3 produce an emission profile that matches the VHE tail of NGC1275. The associated neutrino flux, below the IceCube limits, peaks at $\sim$PeV energies. However, coming from a single source, this neutrino flux may be an over-estimation.
description: Conference proceeding
title: Entwicklung eines synchronen Zweikanal-Signalgenerators zur Optimierung des Messsignals elektrothermisch angeregter, piezoresistiver, resonanter MEMS-Sensoren: Bachelorarbeit
Creators: name: Fangmann, Gabor
Publisher: name: Institut für Halbleitertechnik
Year: 2020
Subjects: subject: 621.3

description: Am Institut für Halbleitertechnik der TU Braunschweig werden auf Silizium basierende resonante MEMS-Sensoren für die Partikel-, Gas- und Oberflächenmesstechnik entwickelt [5][6][7]. Diese basieren auf elektrothermisch angeregten, piezoresistiven, resonanten Cantilever-Sensoren (engl. electro-thermal piezoresistive cantilever sensor, kurz EtPCS) mit integrierter Messelektronik. Bei diesen Sensoren wird die Verschiebung der Resonanzfrequenz ausgewertet. Durch die elektrothermische Anregung treten jedoch Überkopplungen des Anregungssignals in das Messsignal auf [27]. Um trotzdem Echtzeit-messungen durchführen zu können, muss das Sensorsignal aus dem Messsignal extrahiert werden [13][8]. In vorherigen Arbeiten wurden bereits analoge und digitale Ansätze für diese Aufgabe überprüft. Beide weisen jedoch charakteristische Schwächen, wie z.B. ungewollte Frequenzabhängigkeiten und erhöhten Rechenaufwand, auf [12][9]. Deshalb wird in dieser Arbeit ein neuer Ansatz verfolgt, bei dem das übergekoppelte Signal digital nachgebildet und analog vom Messsignal subtrahiert wird. Dazu wird zunächst eine Messelektronik, auf Basis vorheriger Arbeiten, aufgebaut und in Betrieb genommen. Danach wird ein Zweikanal-Signalgenerator entwickelt und aufgebaut, der beliebige Kopplungssignale nachbilden und kompensieren kann. Abschließend wird das entstandene Messsystem charakterisiert.
Nonlinear stiffness, Lyapunov exponents, and attractor dimension
Creators: name: Cartwright, Julyan H. E.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: I propose that stiffness may be defined and quantified for nonlinear systems using Lyapunov exponents, and demonstrate the relationship that exists between stiffness and the fractal dimension of a strange attractor: that stiff chaos is thin chaos.
description: See home page http://lec.ugr.es/~julyan
AI-Powered Presentation Platforms for Improving Public Speaking Skills: Takeaways and Suggestions for Improvement
Creators: name: Fegely A.
name: Halpin P.
name: Hou C.
name: Cherner T.
Publisher: name: Association for the Advancement of Computing in Education
Year: 2023

description:
Skilled orators and their public speaking skills have been held in high esteem since antiquity. Artificial intelligence-powered presentation platforms (AI-PPPs) are an emerging educational technology that provides a virtual venue and AI audience for users to practice a presentation or pitch and receive feedback to improve their public speaking skills. AI-PPPs allow users to customize their context (e.g., audience type, setting, type of presentation) and make their presentation to a virtual audience comprised of avatars. AI-PPPs use algorithms to interpret the user’s public speaking skills and provide an analysis of their performance, often including metrics on pitch, eye contact, pace, volume, distractors, paus-es, etc. This research analyzes one such AI-PPP to determine its effectiveness utilizing the text complexity framework. This mixed methods case study reports graduate educational innovation program participants’ AI-PPP-assigned public speaking scores, experiences, and concerns with using AI-PPPs as a learning tool, and data was collected from survey items, performance scores, and focus group interviews. The researchers identified that while the participants found initial value with the AI-PPP, there was growing frustration with its feedback and functionality. Implications based on these find-ings include recommendations for instructors for improving public speaking instruction with AI-PPPs, as well as develop-ers for refining AI-PPP tools. In addition, limitations that may have impacted this study’s results are discussed.
A functorial approach to the C*-algebras of a graph
Creators: name: Spielberg, Jack
Publisher: name: arXiv
Year: 2001
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L55

description: A functor from the category of directed trees with inclusions to the category of commutative C*-algebras with injective *-homomorphisms is constructed. This is used to define a functor from the category of directed graphs with inclusions to the category of C*-algebras with injective *-homomorphisms. The resulting C*-algebras are identified as Toeplitz graph algebras. Graph algebras are proved to have inductive limit decompositions over any family of subgraphs with union equal to the whole graph. The construction is used to prove various structural properties of graph algebras.
description: 24 pages. See also http://math.la.asu.edu/~jss New version comments: Corrected typos, and added references
Additional file 1 of Analysis of blood culture in a rat model of cecal ligation and puncture induced sepsis
Creators: name: Ayar, Prabakar Vaittinada
name: Jacquier, Hervé
name: Deniau, Benjamin
name: Feriel Azibani
name: Mebazaa, Alexandre
name: Blet, Alice
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Physiology
subject: Hematology

description: Additional file 1: Figure S1. Peritoneal fluid culture analysis of 16 rats 16 hours after CLP
Towards a theory of Warm Inflation of the Universe
Creators: name: Bellini, Mauricio
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The warm inflation scenario is an alternative mechanism which can explain the isotropic and homogeneous Universe which we are living in. In this work I extend a previously introduced formalism, without the restriction of slow - roll regime. Quantum to classical transition of the fluctuations is studied by means of the "transition function" here introduced. I found that the fluctuations of radiation energy density decrease with time and the thermal equilibrium at the end of inflation holds.
description: 14 pages, no figures, to appear in Classical and Quantum Gravity
Global Gevrey hypoellipticity on the torus for a class of systems of complex vector fields
Creators: name: Junior, Alexandre Arias
name: Kirilov, Alexandre
name: de Medeira, Cleber
Publisher: name: arXiv
Year: 2018
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35N10, 35H10, 32M25, 35B10

description: Let $L_j = \partial_{t_j} + (a_j+ib_j)(t_j) \partial_x, \, j = 1, \dots, n,$ be a system of vector fields defined on the torus $\mathbb{T}_t^{n}\times\mathbb{T}_x^1$, where the coefficients $a_j$ and $b_j$ are real-valued functions belonging to the Gevrey class $G^s(\mathbb{T}^1)$, with $s>1$. In this paper we were able to characterize the global $s-$hypoellipticity of this system in terms of Diophantine approximations and the Nirenberg-Treves condition (P).
description: 21 pages
Additional file 3: of Checkpoint inhibitor therapy for cancer in solid organ transplantation recipients: an institutional experience and a systematic review of the literature
Creators: name: Abdel-Wahab, Noha
name: Safa, Houssein
name: Abudayyeh, Ala
name: Johnson, Daniel
name: Trinh, Van
name: Chrystia Zobniw
name: Lin, Heather
name: Wong, Michael
name: Maen Abdelrahim
name: A. Gaber
name: Suarez-Almazor, Maria
name: Diab, Adi
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Table S1. Immune Checkpoint Inhibitors (CPIs) in Patients with Cancer and Prior Solid Organ Transplantation (SOT)a. Table S2. Quality Appraisal of the Literature Reported Cases. (DOCX 28 kb)
title: Entwicklung und Aufbau eines rauscharmen, modularen, FPGA-basierten Messsystems zur Hochgeschwindigkeitsmessung von resonanten MEMS Sensoren: Bachelorarbeit
Creators: name: Müller, Maximilian
Publisher: name: Institut für Halbleitertechnik
Year: 2020
Subjects: subject: 621.3

description: In der Industrie werden Oberflächenmessungen diverser Materialien zunehmend wichtiger. Diesbezüglich haben sich taktile Sensoren bewärt [1]. Aspekte wie Modularität, Auflösung und Geschwindigkeit sind in unterschiedlichen Messsystemen bereits verifiziert und optimiert worden. Die PLL-basierte Messung hat sich bei resonanten Sensoren in Hinblick auf die Scangeschwindigkeit besonders etabliert, sie ist dennoch ausbaufähig. Aktuelle Messaufbauten erreichen Geschwindigkeiten von 15 mm/s und können einen minimalen Höhenunterschied von 11 nm detektieren. [1, 2, 3, 4, 5]. Ein wesentlicher Schwachpunkt der bestehenden Elektronik ist der hohe Rauschanteil. Mit schmalbandigen Verstärkern wie dem Lock-in Verstärker lassen sich diese Rauschanteile verringern. FPGA-basierte Methoden zur Lock-in Mechanik wurden bereits validiert und bieten neben hoher Integrierbarkeit und Geschwindigkeitszuwachs durch Parallelisierung, ein großes Maß an Flexibilität [6, 1]. In dieser Arbeit wird ein Grundsystem entwickelt, in dem digitale PLL Verfahren und alternative Lock-in Mechaniken getestet und verglichen werden können. Dies soll insbesondere die Untersuchung höherer Moden ermöglichen und zugleich höhere Scangeschwindigkeiten gestatten. Eine Modulare Auslegung soll es möglich machen, diverse Komponenten zu optimieren und somit ein passendes und reproduzierbares Messsystem entwickeln zu können. Die Flexibilität des Systems soll berücksichtigt werden, damit das Messsystem für eine breite Auswahl an Cantileversensoren zugänglich ist und unterschiedliche Messverfahren untersucht werden können. Dafür müssen in Hinblick auf die Zugänglichkeit des Systems Schnittstellen passend ausgelegt und implementiert werden, die einheitlich und auf einfache Weise nutzbar sind. Moderne Lock-in-Verstärker sind sehr kostenintensiv, daher muss der Aspekt der Wirtschaftlichkeit für dieses System ebenfalls berücksichtigt werden, indem auf vergleichsweise günstige und standardisierte Hardwarekomponenten zurückgegriffen wird. Die zu entwickelnde Messelektronik soll zudem manipulierbar sein und an Anforderungen anpassbar entworfen werden. Diese Arbeit soll außerdem einen allgemeinen Einblick in die Problem zugeschnittene Entwicklung FPGA-basierter, eingebetteter Systeme geben und die dafür nötige digitale Schaltungsentwicklung und Elektronikentwicklung behandeln.
Observing the Galactic Underworld: Predicting photometry and astrometry from compact remnant microlensing events
Creators: name: Sweeney, David
name: Tuthill, Peter
name: Krone-Martins, Alberto
name: Mérand, Antoine
name: Scalzo, Richard
name: Martinod, Marc-Antoine
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Isolated black holes (BHs) and neutron stars (NSs) are largely undetectable across the electromagnetic spectrum. For this reason, our only real prospect of observing these isolated compact remnants is via microlensing; a feat recently performed for the first time. However, characterisation of the microlensing events caused by BHs and NSs is still in its infancy. In this work, we perform N-body simulations to explore the frequency and physical characteristics of microlensing events across the entire sky. Our simulations find that every year we can expect $88_{-6}^{+6}$ BH, $6.8_{-1.6}^{+1.7}$ NS and $20^{+30}_{-20}$ stellar microlensing events which cause an astrometric shift larger than 2~mas. Similarly, we can expect $21_{-3}^{+3}$ BH, $18_{-3}^{+3}$ NS and $7500_{-500}^{+500}$ stellar microlensing events which cause a bump magnitude larger than 1~mag. Leveraging a more comprehensive dynamical model than prior work, we predict the fraction of microlensing events caused by BHs as a function of Einstein time to be smaller than previously thought. Comparison of our microlensing simulations to events in Gaia finds good agreement. Finally, we predict that in the combination of Gaia and GaiaNIR data there will be $14700_{-900}^{+600}$ BH and $1600_{-200}^{+300}$ NS events creating a centroid shift larger than 1~mas and $330_{-120}^{+100}$ BH and $310_{-100}^{+110}$ NS events causing bump magnitudes $> 1$. Of these, $<10$ BH and $5_{-5}^{+10}$ NS events should be detectable using current analysis techniques. These results inform future astrometric mission design, such as GaiaNIR, as they indicate that, compared to stellar events, there are fewer observable BH events than previously thought.
description: Accepted for publication in MNRAS. 15 pages
title: Iluvien® in der Therapie des strahleninduzierten Makulaödems
Creators: name: Zimmermann, Lena
name: Grajewski, L.
name: Kneifel, C.E.
name: Krause, L.
Publisher: name: German Medical Science GMS Publishing House
Year: 2019
Subjects: subject: 610 Medical sciences; Medicine

description: Fragestellung: Ein chronisches Makulaödem ist eine bekannte Komplikation im Rahmen einer Strahlenretinopathie nach Bestrahlung von Aderhautmelanomen. Bisherige therapeutische Ansätze zeigen eine variable Erfolgsrate. Wir berichten das erste Mal über den Einsatz des Wirkstoffes Fluocinolonacetonid[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 27. Jahrestagung der Regionalgesellschaft der Augenärzte Sachsen-Anhalts und Thüringens e. V.