cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
EFFORTS TOWARDS EFFECTIVE ROBOTIC STRAWBERRY HARVESTING
Creators: name: He, Zixuan
Publisher: name: Washington State University
Year: 2024
Subjects: Deep learning
Occlusion removing
Robotic harvesting
Strawberry
Strawberry detection
Computer Science

description: Strawberry is one of the most important agricultural products in the United States and around the world. Traditionally the harvesting of these delicate fruits has been heavily reliant on a seasonal workforce, which is currently impacted by uncertainties in labor availability and increasing labor costs. The investigation of robotic strawberry harvesting has emerged as a promising alternative to address these labor-related challenges. This dissertation research focused on advancing the robotic strawberry harvesting technology by exploring the challenges posed by occlusion of ripe strawberries by other canopy parts such as leaves, vine, and immature fruit. The study introduced innovative solutions in three different areas. Firstly, the study advanced the machine vision system by leveraging the YOLO (You Only Look Once) family of deep learning models. Specifically, YOLOv5 and YOLO v8 models were modified (e.g., YOLOv5s-Straw(+C2f+SPPFCSP) and YOLOv8s(+C3x+head+αIoU)) to improve their performance in strawberry detection, which achieved the highest mean average precision (mAP) of 80.3% and the highest peak mAP of 83.2%, while maintaining real-time inference speeds on a laptop computer with GPU (RTX3070) and CPU (11800H). Secondly, this research addressed the critical task of determining the pickability of partially occluded strawberries using the YOLOv5s-cls model, which achieved an accuracy of 95.0% with a very low inference time of 2.8 ms. These machine vision models were then integrated with a robotic system designed for open-field strawberry harvesting. The robot included a commercial 6 DOF (Degree of Freedom) manipulator and a novel gripper and fan system, which were installed on a mobile platform. In the challenging open-field environments, this integrated harvester, particularly with the fan system, achieved a significantly higher picking success rate of 73.9% compared to the same achieved without the fan system (58.1%). This research findings demonstrated the potential of these technological innovations in addressing occlusion-related complexities, thereby enhancing efficiency and precision in robotic strawberry harvesting in open-field environments.
Constituição do núcleo da terra
Creators: name: Machado, Frederico
Publisher: name: Revista da Universidade de Aveiro. Geociências
Year: 1987

description: Usando para o interior da Terra o modelo HB1 de Haddon & Bullen, e admitindo que o materiaç do núcleo tem a composição Feo, 9Nio, 10o. 6, mostra-se que as condições são adequadas para a geração do campo geomagnético. Nest modelo do núcleo o material será certamente um semicondutor com banda proibida de cerca de 7,4 eV (e com eventuais níveis intremédios que facilitem aos electrões os saltos de energia).
description: Revista da Universidade de Aveiro. Geociências, vol. 2 n.º 1-2 (1987): Volume Cotelo Neiva
Geant4 based simulation of the Water Cherenkov Detectors of the LAGO Project
Creators: name: Calderón, R.
name: Asorey, H.
name: Núñez, L. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: To characterize the signals registered by the different types of water Cherenkov detectors (WCD) used by the Latin American Giant Observatory (LAGO) Project, it is necessary to develop detailed simulations of the detector response to the flux of secondary particles at the detector level. These particles are originated during the interaction of cosmic rays with the atmosphere. In this context, the LAGO project aims to study the high energy component of gamma rays bursts (GRBs) and space weather phenomena by looking for the solar modulation of galactic cosmic rays (GCRs). Focus in this, a complete and complex chain of simulations is being developed that account for geomagnetic effects, atmospheric reaction and detector response at each LAGO site. In this work we shown the first steps of a GEANT4 based simulation for the LAGO WCD, with emphasis on the induced effects of the detector internal diffusive coating.
description: 5 pages, 4 figures, Proceedings X SILAFAE Medellin-2014. To appear in Nuclear Physics B - Proceedings Supplements
An early Indian experience with benralizumab - A compendium on severe asthma cases: a case series
Creators: name: Soumya Das
name: Sharma, Rahul
name: Nagarjuna Maturu
name: Yadav, Manoj
name: Meshram, Priti
name: Dr Deepak Talwar
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Medicine and Health Sciences

description: Background: Severe eosinophilic asthma (SEA), one of the phenotypes of asthma that is characterized by elevated blood eosinophil counts, is a common cause of uncontrolled asthma. Patients with SEA often experience severe persistent symptoms and have frequent exacerbations despite optimal inhaler therapy. They also have poor lung function and quality of life (QoL). Benralizumab (Fasenra), a monoclonal antibody, has been approved for managing cases of SEA. This series of six cases, the first of its kind from India, aims to add to the real-world evidence of benralizumab in India. Methods: Benralizumab 30 mg (once in four weeks for the first three doses followed by a dose every eight weeks for two years) was administered in six patients with symptoms of cough, breathlessness on exertion, and wheezing, diagnosed with SEA. The following were the endpoints assessed: (i) overlap between high immunoglobulin E (IgE) and eosinophilic asthma; (ii) reduction of exacerbations; (iii) withdrawal of oral corticosteroids; and (iv) improvement in lung function and QoL. Results: In all cases, management with benralizumab resulted in optimal clinical and functional improvement, a decline in systemic steroid use, and improved QoL. Conclusions: The cases presented here are the first of their kind in the Indian asthmatic population with all SEA patients demonstrating significant improvement in symptoms with the use of benralizumab. x
Is independent choice possible?
Creators: name: Inamori, Hitoshi
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This paper questions the generally accepted assumption that one can make a random choice that is independent of the rest of the universe. We give a general description of any setup that could be conceived to generate random numbers. Based on the fact that the initial state of such setup together with its environment cannot be known, we show that the independence of its generated output cannot be guaranteed. Some consequences of this theoretical limitation are discussed.
description: 8 pages 4 figures
Duas palavras
Creators: name: Araújo, Joaquim Renato Ferreira De
Publisher: name: Revista da Universidade de Aveiro. Geociências
Year: 1987

description: Os responsáveis pela "Revista da Universidade de Aveiro - Geociências" quiseram dedicar este número ao Prof. João Manuel Cotelo Neiva. (...)
description: Revista da Universidade de Aveiro. Geociências, vol. 2 n.º 1-2 (1987): Volume Cotelo Neiva
Outer Rotation Curve of the Galaxy with VERA II: Annual Parallax and Proper Motion of the Star-Forming Region IRAS21379+5106
Creators: name: Nakanishi, Hiroyuki
name: Sakai, Nobuyuki
name: Kurayama, Tomoharu
name: Matsuo, Mitsuhiro
name: Imai, Hiroshi
name: Burns, Ross A.
name: Ozawa, Takeaki
name: Honma, Mareki
name: Shibata, Katsunori
name: Kawaguchi, Noriyuki
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We conducted astrometric VLBI observations of water-vapor maser emission in the massive star forming region IRAS 21379+5106 to measure the annual parallax and proper motion, using VERA. The annual parallax was measured to be $0.262 \pm 0.031$ mas corresponding to a trigonometric distance of $3.82^{+0.51}_{-0.41}$ kpc. The proper motion was $(μ_α\cosδ, μ_δ)=(-2.74 \pm 0.08, -2.87 \pm 0.18)$ mas yr$^{-1}$. Using this result, the Galactic rotational velocity was estimated to be $V_θ=218\pm 19$ km s$^{-1}$ at the Galactocentric distance $R=9.22\pm0.43$ kpc, when we adopted the Galactic constants $R_0=8.05\pm 0.45$ kpc and $V_0=238\pm 14$ km s$^{-1}$. With newly determined distance, {the bolometric luminosity of the central young stellar object was re-evaluated to $(2.15\pm 0.54)\times 10^3 L_\odot$, which corresponds to spectral type of} B2--B3. Maser features were found to be distributed along a straight line from south-west to north-east. In addition, a vector map of the internal motions constructed from the residual proper motions implies that maser features trace a bipolar flow and that it cannot be explained by simple ballistic motion.
description: 13 pages, 7 figures, 6 tables
Intersection theory for graphs
Creators: name: Brylawski, Tom
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: An intersection theory developed by the author for matroids embedded in uniform geometries is applied to the case when the ambient geometry is the lattice of partitions of a finite set so that the matroid is a graph. General embedding theorems when applied to graphs give new interpretations to such invariants as the dichromate of Tutte. A polynomial in n + 1 variables, the polychromate, is defined for graphs with n vertices. This invariant is shown to be strictly stronger than the dichromate, it is edge-reconstructible and can be calculated for proper graphs from the polychromate of the complementary graph. By using Tutte's construction for codichromatic graphs (J. Combinatorial Theory 16 (1974), 168–174), copolychromatic (and therefore codichromatic) graphs of arbitrarily high connectivity are constructed thereby solving a problem posed in Tutte's paper.
title: Le «don toujours recommencé»: Alessandro Fontana, maître et ami
Creators: name: Tabet, Xavier
Publisher: name: Università di Pisa
Year: 2020

description: This paper recalls the thought of Alessandro Fontana (1939-2013), one of the Michel Foucault’s key collaborators between France and Italy. Here, Fontana’s writings dedicated to modern rationality and the birth of the sciences and techniques aimed at achieving the truth about men are take into account. In particular, this study tries to bring out the links that exist in those studies between different subjects: Venice and its political myth, Machiavelli and the ambassadors during the Renaissance, Beccaria and criminal law between ancien régime and the nineteenth century. Written by his friend and disciple, this essay also seeks to restore the charming style of the intellectual and professor of the École Normale Supérieure.
(102440) John Lewis Ward
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Numerical conformal mapping methods based on Faber series
Creators: name: DeLillo, Thomas
name: Pfaltzgraff, John
name: Elcrat, Alan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1997

description: Methods are presented for approximating the conformal map from the interior of various regions to the interior of simply-connected target regions with a smooth boundary. The methods for the disk due to Fornberg (1980) and the ellipse due to DeLillo and Elcrat (1993) are reformulated so that they may be extended to other new computational regions. The case of a cross-shaped region is introduced and developed. These methods are used to circumvent the severe ill-conditioning due to the crowding phenomenon suffered by conformal maps from the unit disk to target regions with elongated sections while preserving the fast Fourier methods available on the disk. The methods are based on expanding the mapping function in the Faber series for the regions. All of these methods proceed by approximating the boundary correspondence of the map with a Newton-like iteration. At each Newton step, a system of linear equations is solved using the conjugate gradient method. The matrix-vector multiplication in this inner iteration can be implemented with fast Fourier transforms at a cost of O(N log N). It is shown that the linear systems are discretizations of the identity plus a compact operator and so the conjugate gradient method converges superlinearly. Several computational examples are given along with a discussion of the accuracy of the methods.
(102424) Janet Nellie Brown
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Alguns aspectos geoquímicos sobre fosforites da margem continental portuguesa
Creators: name: Gaspar, Luís C.
Publisher: name: Revista da Universidade de Aveiro. Geociências
Year: 1986

description: Foram estudadas 25 amostras, constituídas por nódulos bastante irregulares, provenientes da margem continental portuguesa colhidas a profundidades entre os 425 e os 1945 metros, e incluídas em programa actualmente em execução nos Serviços Geológicos de Portugal. (...)
description: Revista da Universidade de Aveiro. Geociências, vol. 1 n.º 1-2 (1986)
Engagement infrastructure risk analytics
Creators: name: Jasionowski, Pawel
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 460502
subject: Data mining and knowledge discovery
classificationCode: 460501
subject: Data engineering and data science
classificationCode: 460503
subject: Data models, storage and indexing
classificationCode: 460510
subject: Recommender systems

description: This paper presents the effort toward building a predictive analytics framework for engagement risk management. We propose a method to predict a number of problematic servers for unknown client infrastructure environment to calculate the risk based on historical servers’ classification. The first part of the algorithm is designed for grouping configuration items based on proposed similarity engine and predicts how many problematic servers are expected in the formerly unseen environment. Second part of the method compares results to currently maintained infrastructures and by using defined thresholds nominates them to implement proposed improvement actions. The analytics engine provides significant improvement over traditional risk assessment in capturing risky infrastructure environments when tested with real client data.
Spin-current probe for phase transition in an insulator
Creators: name: Qiu, Zhiyong
name: Li, Jia
name: Hou, Dazhi
name: Arenholz, Elke
name: NDiaye, Alpha T.
name: Tan, Ali
name: Uchida, Ken-ichi
name: Sato, K.
name: Okamoto, Satoshi
name: Tserkovnyak, Yaroslav
name: Qiu, Z. Q.
name: Saitoh, Eiji
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin fluctuation and transition have always been one of central topics of magnetism and condensed matter science. Experimentally, the spin fluctuation is found transcribed onto scattering intensity in the neutron scattering process, which is represented by dynamical magnetic susceptibility and maximized at phase transitions. Importantly, a neutron carries spin without electric charge, and it can bring spin into a sample without being disturbed by electric energy, although large facilities such as a nuclear reactor is necessary. Here we show that spin pumping, frequently used in nanoscale spintronic devices, provides a desktop micro probe for spin transition; spin current is a flux of spin without an electric charge and its transport reflects spin excitation. We demonstrate detection of antiferromagnetic transition in ultra-thin CoO films via frequency dependent spin-current transmission measurements, which provides a versatile probe for phase transition in an electric manner in minute devices.
Reflexão sobre o ensino-aprendizagem também em geociências
Creators: name: Marques, Luís M.
name: Rabaça, Fernando
Publisher: name: Revista da Universidade de Aveiro. Geociências
Year: 1986

description: É comum, hoje em dia, falar-se muito de aprendizagem subestimando eventualmente uma outra face do mesmo problema - o ensino.Será bom indagar a razão de ser desta atitude começando, para isso, por colocar a questão já tradicional - o que se pretende da Escola, em sentido lato? (...)
description: Revista da Universidade de Aveiro. Geociências, vol. 1 n.º 1-2 (1986)
The Combinatorics of Cache Misses during Matrix Multiplication
Creators: name: Lebeck, Alvin
name: Hanlon, Philip
name: Chung, Dean
name: Chatterjee, Siddhartha
name: Parker, Erin
name: Genius, Daniela
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2001

description: In this paper we construct an analytic model of cache misses during matrix multiplication. The analysis in this paper applies to square matrices of size 2m where the array layout function is given in terms of a function Θ that interleaves the bits in the binary expansions of the row and column indices. We first analyze the number of cache misses for direct-mapped caches and then indicate how to extend this analysis to -way associative caches. The work in this paper accomplishes two things. First, we construct fast algorithms to estimate the number of cache misses. Second, we develop a theoretical understanding of cache misses that will allow us, in subsequent work, to approach the problem of minimizing cache misses by appropriately choosing the bit interleaving function that goes into the array layout function.
title: C’est le labyrinthe qui fait le Minotaure. La folie et la métahistoire dans les inédits foucaldiens des années 1960
Creators: name: Guerbo, Maririta
Publisher: name: Università di Pisa
Year: 2020

description: This paper finds its starting point in the collection of previously unpublished works by Michel Foucault titled Folie, langage, littérature. Those writings, dating from the late Sixties, show the survival of an universal notion of insanity that seemed to have been already disproved by Foucault. We will confront this survival by the criticisms of two great Italians theoreticians of history: Carlo Ginzburg and Ernesto de Martino. If an universal notion of insanity is incompatible with the method of history, and more radically with any theory, according to Foucault, only Literature can legitimately speak in the subversive language of Insanity. How may we speak about and for the insane? This is the theoretical labyrinth that creates the monster of an incoherent author. But this paper also shows how Foucault builds archeological method on the foundations of a new notion of author, who is capable of continuously operate on his own thought.
THE EFFECTS OF EARLY-LIFE LEAD EXPOSURE ON ADULT DELTA-9-TETRAHYDROCANNABINOL SENSITIVITY, SELF-ADMINISTRATION, AND TOLERANCE
Creators: name: Garcy, Daniel
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Behavioural neuroscience
Psychopharmacology

description: Environmental exposure to lead (Pb) and cannabis use are two of the largest public health issues facing modern society in the United States and around the world. Exposure to Pb in early life has been unequivocally shown to have negative impacts on development, and recent research is mounting showing that it may also predispose individuals for risk of developing substance use disorders (SUD). At the same time, societal and legal attitudes towards cannabis (main psychoactive component delta-9-tetrahydrocannabinol) have been shifting, and many American states have legalized the recreational use of cannabis. It is also the 3rd most widely used drug of abuse in the US, and rates of cannabis use disorder are on the rise. This thesis sets out to establish whether there is a link between early life Pbexposure and later THC-related behavior in C57BL6/J mice, as has been demonstrated for other drugs of abuse. The first aim seeks to answer whether Pbexposure affects physiological THC sensitivity (as measured by the cannabinoid-induced tetrad). The secondaimseeks to answer whether Pbexposure affects edible THC self-administration and the development of THC tolerance (also measured by the tetrad).It was hypothesized that Pbexposure would decrease THC sensitivity (Aim 1), would enhance THC self-administration (Aim 2), enhance the development of THC tolerance (Aim 2), and finally that sex-dependent effects of Pb-exposure and THC would be observed (Aims 1 & 2). These hypotheses ended up not being supported, but Aim 1 produced findings indicating that THC sensitivity was increased by Pbexposure, but only in female mice. Future researchwill hopefully be able to fully explore the implications of these findings.
σ-Porosity of the set of strict contractions in a space of non-expansive mappings
Creators: name: Bargetz, Christian
name: Dymond, Michael
Publisher: name: arXiv
Year: 2015
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47H09

description: We consider the space of non-expansive mappings on a bounded, closed and convex subset of a Banach space equipped with the metric of uni- form convergence. We show that the set of strict contractions is a σ-porous subset.
description: Accepted version
Strong-field tidal distortions of rotating black holes: II. Horizon dynamics from eccentric and inclined orbits
Creators: name: O'Sullivan, Stephen
name: Hughes, Scott A.
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: In a previous paper, we developed tools for studying the horizon geometry of a Kerr black hole that is tidally distorted by a binary companion using techniques that require large mass ratios but can be applied to any bound orbit and allow for arbitrary black hole spin. We now apply these tools to generic Kerr black hole orbits. This allows us to investigate horizon dynamics: the tidal field perturbing the horizon's geometry varies over a generic orbit, with significant variations for eccentric orbits. Many of the features of the horizon's behavior found previously carry over to the dynamical case in a natural way. In particular, we find significant offsets between the applied tide and the horizon's response. This leads to bulging in the horizon's geometry which can lag or lead the orbit, depending upon the hole's rotation and the orbit's geometry. An interesting and apparently new feature we find are small-amplitude, high-frequency oscillations in the horizon's response. We have not been able to identify a mechanism for producing these oscillations, but find that they appear most clearly when rapidly rotating black holes are distorted by very strong-field orbits.
description: 24 pages, 15 figures. Final accepted version, to appear in Phys. Rev. D
Mixed Pfair/ERfair scheduling of asynchronous periodic tasks
Creators: name: Anderson, James H.
name: Srinivasan, Anand
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004

description: PD2 uses a simpler tie-breaking scheme than PD to disambiguate equal deadlines. We present a series of counterexamples that suggest that, in general, the PD2 tie-breaking mechanism cannot be simplified. In contrast to this, we show that no tie-breaking information is needed on two-processor systems.
description: Pfair scheduling was proposed by Baruah, Cohen, Plaxton, and Varvel as a non-work-conserving way of optimally and efficiently scheduling periodic tasks on a multiprocessor. In this paper, we introduce a work-conserving variant of Pfair scheduling called “early-release” fair (ERfair) scheduling. We also present a new scheduling algorithm called PD2 and show that it is optimal for scheduling any mix of early-release and non-early-release asynchronous, periodic tasks. In contrast, almost all prior work on Pfair scheduling has been limited to synchronous systems. PD2 is an optimization of an earlier deadline-based algorithm of Baruah, Gehrke, and Plaxton called PD
Little strings and T-duality
Creators: name: Kim, Jungmin
name: Kim, Seok
name: Lee, Kimyeong
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the 2d N = 4 gauge theory descriptions of little strings on type II NS5- branes. The IIB strings on N NS5-branes are described by the N = (4,4) gauge theories, whose Higgs branch CFTs on U(N) instanton moduli spaces are relevant. The IIA strings are described by N = (4,4) circular A_{N-1} quiver theories, whose Coulomb branch CFTs are relevant. We study new N = (0,4) quiver gauge theories for the IIA strings, which make it easier to study some infrared observables. In particular, we show that the elliptic genera of the IIA / IIB strings precisely map to each other by T-duality.
description: 34 pages, 5 figures
L’azienda come attore politico e sociale. In risposta a 11 domande su Olivetti
Creators: name: Morteo, Enrico
Publisher: name: La Rivista di Engramma
Year: 2019
Subjects: subject: Olivetti
subject: Community
subject: Buisness
subject: Territory
subject: Architecture
subject: FOS: Civil engineering
subject: Urban planning

description: Enrico Morteo asserts that, with his idea of ‘community’. Olivetti attempted to unsettle the classical opposition between social classes, proposing a more definite articulation of the generic (or universal) concept of society. Founded on a specific site, the ‘community’ is both the founding unity of the State and the ethical and moral discipline that informs the actions of individuals. The company contributes to the community’s collective growth while intellectuals lead its research, the development of new products, and social activity. The territory, place of interaction between community and business, is designed through the rationalization of the regulatory plan intended as a formalization of a social contract. Within it, architecture and urban planning – consequences and not preconditions of Olivetti’s thought – become the concretization of objectives defined by Olivetti himself whose role in defining these forms was decisive. The principle that the company is a political and social actor, oriented towards the collective interest, is what remains timely in Olivetti’s work.
Estudos geotécnicos com o ensaio Windsor
Creators: name: Ladeira, Fernando Lage
Publisher: name: Revista da Universidade de Aveiro. Geociências
Year: 1986

description: Introduzir dinamicamente num solo ou numa rocha branda uma vareta de aço e ficar a conhecer as características de resistência geomecânica do terreno atravessado, não é assunto novo, já que o penetrómetro dinãmico tem vindo a ser utilizado com sucesso para esse efeito, em muitas partes do mundo. (...)
description: Revista da Universidade de Aveiro. Geociências, vol. 1 n.º 1-2 (1986)
Spectral measures of factor of i.i.d. processes on vertex-transitive graphs
Creators: name: Backhausz, Ágnes
name: Virág, Bálint
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We prove that a measure on $[-d, d]$ is the spectral measure of a factor of i.i.d. process on a vertex-transitive infinite graph if and only if it is absolutely continuous with respect to the spectral measure of the graph. Moreover, we show that the set of spectral measures of factor of i.i.d. processes and that of $\bar d_2$-limits of factor of i.i.d. processes are the same.
description: 26 pages; proof of Proposition 9 shortened
(102420) John Anthony Quayle
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
In silico bioavailability for BCS class II efavirenz tablets using biorelevant dissolution media for IVIVR and simulation of formulation changes
Creators: name: da Silva, Thalita Martins
name: da Silva Honorio, Thiago
name: da Cunha Chaves, Marcelo Henrique
name: Duque, Marcelo Dutra
name: Cabral, Lucio Mendes
name: de Carvalho Patricio, Beatriz Ferreira
name: Rocha, Helvécio Vinícius Antunes
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: This work aims to evaluate the ability of biorelevant dissolution media to simulate the bioavailability of efavirenz tablets, establish an in vitro–in vivo relationship (IVIVR) based on in vivo data using GastroPlus® and simulate formulation changes using DDDPlus™. Solubility and drug release profiles were conducted in SLS 0.5% and biorelevant media, such as FaSSIF, FeSSIF, FaSSIF-V2, and FeSSIF-V2. The efavirenz physicochemical properties were used to simulate the plasma concentration profile and compare the simulated pharmacokinetic parameters in fasted and fed states. An IVIVR was developed using Loo-Riegelman as the deconvolution method to estimate drug bioavailability. DDDPlus™ was used to perform virtual trials of formulations to evaluate whether formulations changes and the efavirenz particle size could influence the bioavailability. The drug dissolution displayed higher levels in the biorelevant media that simulated gut-fed state (FeSSIF and FeSSIF-V2). The absorption model successfully predicted the efavirenz pharmacokinetics, and FeSSIF-V2 was chosen as the predictive dissolution media, while an IVIVR was established using the Loo-Riegelman deconvolution method. The present work provides valuable information about efavirenz solubility and kinetics in the gastrointestinal tract, allowing an IVIVR to support future formulation changes. This understanding is essential for rational science-driven formulation development. At least, this study also showed the validity and applicability of in vitro and in silico tools in the regulatory scenario helping on drug development.
Reaction rates for a generalized reaction-diffusion master equation
Creators: name: Hellander, Stefan
name: Petzold, Linda
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: It has been established that there is an inherent limit to the accuracy of the reaction-diffusion master equation. Specifically, there exists a fundamental lower bound on the mesh size, below which the accuracy deteriorates as the mesh is refined further. In this paper we extend the standard reaction-diffusion master equation to allow molecules occupying neighboring voxels to react, in contrast to the traditional approach in which molecules react only when occupying the same voxel. We derive reaction rates, in two dimensions as well as three dimensions, to obtain an optimal match to the more fine-grained Smoluchowski model, and show in two numerical examples that the extended algorithm is accurate for a wide range of mesh sizes, allowing us to simulate systems intractable with the standard reaction-diffusion master equation. In addition, we show that for mesh sizes above the fundamental lower limit of the standard algorithm, the generalized algorithm reduces to the standard algorithm. We derive a lower limit for the generalized algorithm, which, in both two dimensions and three dimensions, is on the order of the reaction radius of a reacting pair of molecules.
Dynamics of Dissipative Gravitational Collapse in the Morris-Thorne Wormhole Metric: One Scenario -- Several Outcomes
Creators: name: Nalui, Subhasis
name: Bhattacharya, Subhra
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the dynamical Morris-Thorne metric with radiating heat flow. By matching the interior Morris-Thorne metric with an exterior Vaidya metric we trace out the collapse solutions for the corresponding spherically symmetric inhomogeneous distribution of matter. The solutions obtained are broadly of four different types, giving different end state dynamics. Corresponding to three of the solutions we elaborate the collapsing dynamics of the Morris-Thorne type evolving wormhole. We show that for all those cases where collapse upto zero proper volume is obtained in finite time, the ensuing singularity is always a black hole type. However our solutions can also show other end states, like oscillating wormhole-black hole pair or infinite time contracting universe or a conformal past matter dominated universe. In all the cases we have worked out the background dynamics and physics of the solution. All our solutions are illustrated with appropriate graphical descriptions.
description: Accepted for Publication in Annals of Physics
Optimal rate-based scheduling on multiprocessors
Creators: name: Srinivasan, Anand
name: Anderson, James H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: The PD2 Pfair/ERfair scheduling algorithm is the most efficient known algorithm for optimally scheduling periodic tasks on multiprocessors. In this paper, we prove that PD2 is also optimal for scheduling “rate-based” tasks whose processing steps may be highly jittered. The rate-based task model we consider generalizes the widely-studied sporadic task model.
On derivatives of graphon parameters
Creators: name: Lovász, László Miklós
name: Zhao, Yufei
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We give a short elementary proof of the main theorem in the paper "Differential calculus on graphon space" by Diao et al. (JCTA 2015), which says that any graphon parameters whose $(N+1)$-th derivatives all vanish must be a linear combination of homomorphism densities $t(H, -)$ over graphs $H$ on at most $N$ edges.
description: 4 pages
(102425) Lois Mary Brown
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
The Grothendieck groups and stable equivalences of mesh algebras
Creators: name: Asai, Sota
Publisher: name: arXiv
Year: 2015
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We deal with the finite-dimensional mesh algebras given by stable translation quivers. These algebras are self-injective, and thus the stable categories have a structure of triangulated categories. Our main result determines the Grothendieck groups of these stable categories. As an application, we give an complete classification of the mesh algebras up to stable equivalences.
description: 35 pages
Prospects for Revealing Intermediate-Mass Black Holes in NGC 1399 using SKA
Creators: name: Karimi, B.
name: Barmby, P.
name: Abbassi, S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This study investigates the detectability of intermediate-mass black holes (IMBHs) within the mass range $10^2-10^5$ solar masses in the globular star clusters of NGC 1399 at a frequency of 300.00 MHz. Employing the theoretical Bondi accretion model and the empirical fundamental plane of black hole accretion, we estimate IMBH masses based on bolometric luminosity and X-ray/radio luminosities, respectively. By simulating a 3-hour observation of 77 globular cluster candidates using the Square Kilometer Array, we identify radio detection benchmarks indicative of accretion onto IMBHs. Our results show that IMBHs inside the globular star clusters located in NGC 1399 are indeed detectable, with the Bondi accretion model providing IMBH mass estimates ranging from $2.93 \times 10^{3.0\pm 0.39}$ to $7.43 \times 10^{4.0 \pm 0.39}$ solar masses, and the empirical fundamental-plane relation suggesting IMBH mass estimation with $3.41\times 10^{5.0 \pm 0.96}$ solar masses. These findings highlight the presence and detectability of IMBHs in globular clusters, offering insights into their role as precursors to supermassive black holes and enriching our understanding of black hole formation and evolution in astrophysical environments.
description: AAS journals, in press; 9 pages, 5 figures
Rigorous numerical study of strong microwave photon-magnon coupling in all-dielectric magnetic multilayers
Creators: name: Maksymov, Ivan S.
name: Hutomo, Jessica
name: Nam, Donghee
name: Kostylev, Mikhail
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate theoretically a strong local enhancement of the intensity of the in-plane microwave magnetic field in multilayered structures made from a magneto-insulating yttrium iron garnet (YIG) layer sandwiched between two non-magnetic layers with a high dielectric constant matching that of YIG. The enhancement is predicted for the excitation regime when the microwave magnetic field is induced inside the multilayer by the transducer of a stripline Broadband Ferromagnetic Resonance (BFMR) setup. By means of a rigorous numerical solution of the Landau-Lifshitz-Gilbert equation consistently with the Maxwell's equations, we investigate the magnetisation dynamics in the multilayer. We reveal a strong photon-magnon coupling, which manifests itself as anti-crossing of the ferromagnetic resonance (FMR) magnon mode supported by the YIG layer and the electromagnetic resonance mode supported by the whole multilayered structure. The frequency of the magnon mode depends on the external static magnetic field, which in our case is applied tangentially to the multilayer in the direction perpendicular to the microwave magnetic field induced by the stripline of the BFMR setup. The frequency of the electromagnetic mode is independent of the static magnetic field. Consequently, the predicted photon-magnon coupling is sensitive to the applied magnetic field and thus can be used in magnetically tuneable metamaterials based on simultaneously negative permittivity and permeability achievable thanks to the YIG layer. We also suggest that the predicted photon-magnon coupling may find applications in microwave quantum information systems.
Improved conditions for bounded tardiness under EPDF Pfair multiprocessor scheduling
Creators: name: Anderson, James H.
name: UmaMaheswari C. Devi
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: The earliest-pseudo-deadline-first (EPDF) Pfair algorithm is more efficient than other known Pfair scheduling algorithms, but is not optimal for scheduling recurrent real-time task systems on more than two identical processors. Although not optimal, EPDF may be preferable for real-time systems instantiated on less-powerful platforms, those with soft timing constraints, or those whose task composition can change at run-time. In prior work, Srinivasan and Anderson established a sufficient per-task utilization restriction for ensuring a tardiness of at most q quanta, where q⩾1q⩾1, under EPDF. They also conjectured that under this algorithm, a tardiness bound of one quantum applies to task systems that are not subject to any restriction other than the obvious restrictions, namely, that the total system utilization not exceed the available processing capacity and per-task utilizations not exceed 1.0. In this paper, we present counterexamples that show that their conjecture is false and present sufficient per-task utilization restrictions that are more liberal than theirs. For ensuring a tardiness bound of one quantum, our restriction presents an improvement of 50% over the previous one.
The rectangular spiral or the $n_1 \times n_2 \times \cdots \times n_k$ Points Problem
Creators: name: Ripà, Marco
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 91A44 (Primary) 91A46 (Secondary)

description: A generalization of Ripà's square spiral solution for the $n \times n \times \cdots \times n$ Points Upper Bound Problem. Additionally, we provide a non-trivial lower bound for the $k$-dimensional $n_1 \times n_2 \times \cdots \times n_k$ Points Problem. In this way, we can build a range in which, with certainty, all the best possible solutions to the problem we are considering will fall. Finally, we give a few characteristic numerical examples in order to appreciate the fineness of the result arising from the particular approach we have chosen.
description: 9 pages, 3 figures. This is a short version of the original paper, published in NNTDM, for the reasons explained at page 9
title: De l’ascétisme à l’ascétique
Creators: name: Binoche, Bertrand
Publisher: name: Università di Pisa
Year: 2020

description: In 1950, Jean Cayrol (1910-2005), a poet and a novelist, prisoner in Mauthausen during the Second World War and winner of the 1946 Renaudot Prize for a novel dealing with the life after the concentration camp, wrote a preface for Balzac’s Illusions perdues in a new edition of La Comédie humaine under the direction of Albert Béguin. This article seeks to understand the stakes of this very peculiar act of writing, which aimed at restoring the possibility of reading La Comédie humaine in the post-war world and which made of the Balzacian novel a habitable house for returning to life.
(102414) Frederick Stancliffe Stancliffe
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
(102419) William Ernest Fitzgerald
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Disruption of exo-asteroids around white dwarfs and the release of dust particles in debris rings in co-orbital motion
Creators: name: Antoniadou, Kyriaki I.
name: Veras, Dimitri
Publisher: name: arXiv
Year: 2024
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Close to the Roche radius of a white dwarf (WD), an asteroid on a circular orbit sheds material that then adopts a very similar orbit. Observations of the resulting debris show a periodic behavior and changes in flux on short timescales, implying ongoing dynamical activity. Additional encounters from other minor planets may then yield co-orbital rings of debris at different inclinations. The structure, dynamics, and lifetime of these debris discs remains highly uncertain, but is important for understanding WD planetary systems. We aim to identify and quantify the locations of co-orbitals in WD-asteroid-dust particle 3-body systems by exploring the influence of 1:1 resonant periodic orbits. We begin this exploration with co-planar and inclined orbits in the circular restricted 3-body problem (CRTBP) and model the dynamical evolution of these exosystems over observable timescales. The mass ratio parameter for this class of systems ($~2\times 10^{-11}$) is one of the lowest ever explored in this dynamical configuration. We computed the periodic orbits, deduced their linear stability, and suitably seeded the dynamical stability maps. We carried out a limited suite of N-body simulations to provide direct comparisons with the maps. We derive novel results for this extreme mass ratio in the CRTBP, including new unstable 3D families. We illustrate through the maps and N-body simulations where dust can exist in a stable configuration over observable timescales across a wide expanse of parameter space in the absence of strong external forces. Over a timescale of 10 yr, the maximum orbital period deviations of stable debris due to the co-orbital perturbations of the asteroid is about a few seconds. Unstable debris in a close encounter with the asteroid typically deviates from the co-orbital configuration by more than about 20 km and is on a near-circular orbit with an eccentricity lower than ~0.01.
description: Accepted for publication in A&A