cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Monotonic multi-state quantum $f$-divergences
Creators: name: Furuya, Keiichiro
name: Lashkari, Nima
name: Ouseph, Shoy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We use the Tomita-Takesaki modular theory and the Kubo-Ando operator mean to write down a large class of multi-state quantum $f$-divergences and prove that they satisfy the data processing inequality. For two states, this class includes the $(α,z)$-Rényi divergences, the $f$-divergences of Petz, and the measures in \cite{matsumoto2015new} as special cases. The method used is the interpolation theory of non-commutative $L^p_ω$ spaces and the result applies to general von Neumann algebras including the local algebra of quantum field theory. We conjecture that these multi-state Rényi divergences have operational interpretations in terms of the optimal error probabilities in asymmetric multi-state quantum state discrimination.
description: 37 pages
GIS-basierte Distanzanalysen für die Modellierung von Einzugsgebieten prähistorischer Fundstätten
Creators: name: Becker, Daniel
Publisher: name: CRC806-Database
Year: 2012
Subjects: dem
gis
least cost path
site catchment analysis

description: Die Bewohner einer archäologischen Fundstätte müssen sich regelmäßig mit Ressourcen versorgen, dabei geht man davon aus, dass die Fläche die er dazu nutzen kann, durch seine fußläufige Mobilität begrenzt ist. Die Geschwindigkeit mit der der Mensch sich durch seine Umwelt bewegen kann, ist dabei, neben seiner physiologie, maßgeblich durch topographische Faktoren beeinflusst. Die Arbeit untersucht die Möglichkeit mit Hilfe von Berechnung der hangneigungsabhängigen Gehgeschwindigkeit Einzugsgebiete (Site Catchments) archäologischer Fundstätten zu modellieren und zeigt eine Methode auf, die dies ermöglicht. Neben der Hangneigung werden weitere Faktoren wie Gewässernetze, Vegetation und Schneebedeckung in die Modellierung mit einbezogen, um die Machbarkeit aufzuzeigen und ihren Einfluss auf die Einzugsgebiete zu demonstrieren. Als Endergebnis der Modellberechnungen werden neben Site Catchments auch Least Cost Paths modelliert, um die Auswirkungen der verschiedenen Faktoren auf ein potenzielles Verbindungsnetzwerk zwischen mehreren archäologischen Fundstätten darzustellen.
Automated Repair of Unrealisable LTL Specifications Guided by Model Counting
Creators: name: Brizzio, Matías
name: Cordy, Maxime
name: Papadakis, Mike
name: Sánchez, César
name: Aguirre, Nazareno
name: Degiovanni, Renzo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: The reactive synthesis problem consists of automatically producing correct-by-construction operational models of systems from high-level formal specifications of their behaviours. However, specifications are often unrealisable, meaning that no system can be synthesised from the specification. To deal with this problem, we present AuRUS, a search-based approach to repair unrealisable Linear-Time Temporal Logic (LTL) specifications. AuRUS aims at generating solutions that are similar to the original specifications by using the notions of syntactic and semantic similarities. Intuitively, the syntactic similarity measures the text similarity between the specifications, while the semantic similarity measures the number of behaviours preserved/removed by the candidate repair. We propose a new heuristic based on model counting to approximate semantic similarity. We empirically assess AuRUS on many unrealisable specifications taken from different benchmarks and show that it can successfully repair all of them. Also, compared to related techniques, AuRUS can produce many unique solutions while showing more scalability.
Reconfigurable continuously-coupled 3D photonic circuit for Boson Sampling experiments
Creators: name: Hoch, Francesco
name: Piacentini, Simone
name: Giordani, Taira
name: Tian, Zhen-Nan
name: Iuliano, Mariagrazia
name: Esposito, Chiara
name: Camillini, Anita
name: Carvacho, Gonzalo
name: Ceccarelli, Francesco
name: Spagnolo, Nicolò
name: Crespi, Andrea
name: Sciarrino, Fabio
name: Osellame, Roberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Boson Sampling is a computational paradigm representing one of the most viable and pursued approaches to demonstrate the regime of quantum advantage. Recent results have demonstrated significant technological leaps in single-photon generation and detection, leading to progressively larger experimental instances of Boson Sampling experiments in different photonic systems. However, a crucial requirement for a fully-fledged platform solving this problem is the capability of implementing large-scale interferometers, that must simultaneously exhibit low losses, high degree of reconfigurability and the realization of arbitrary transformations. In this work, we move a step forward in this direction by demonstrating the adoption of a compact and reconfigurable 3D-integrated platform for photonic Boson Sampling. We perform 3- and 4-photon experiments by using such platform, showing the possibility of programming the circuit to implement a large number of unitary transformations. These results show that such compact and highly-reconfigurable layout can be scaled up to experiments with larger number of photons and modes, and can provide a viable direction for hybrid computing with photonic processors.
description: 17 pages, 15 figures
Chemical eyes - visualization and interpretation of chemical gradients in stratified water bodies
Creators: name: Kirf, Mathias Klaus
Publisher: name: Zürich, ETH-Zürich
Year: 2014
Subjects: SCHWEIZER SEEN
LIMNOLOGIE, SEEN, STAUBECKEN UND TEICHE (HYDROLOGIE)
SAUERSTOFF (BIOCHEMIE)
ZUGERSEE (SCHWEIZ)
GELÖSTE GASE IN WASSER (HYDROLOGIE)
LUGANERSEE (SCHWEIZ, ITALIEN)
ANOXISCHE UND HYPOXISCHE BECKEN (ABLAGERUNGSMILIEU)
CHEMISCHE SCHICHTUNG IN SEEN + CHEMOKLINE (HYDROLOGIE)

description: Diss., Eidgenössische Technische Hochschule ETH Zürich, Nr. 21709
Surgical Skill Evaluation From Robot-Assisted Surgery Recordings
Creators: Abed Soleymani
Ali Akbar Sadat Asl
Mojtaba Yeganejou
Scott Dick
Mahdi Tavakoli
Xingyu Li
Publisher: name: University of Alberta Library
Year: 2021

Quality and safety are critical elements in the

performance of surgeries. Therefore, surgical trainees need to

obtain the required degrees of expertise before operating on

patients. Conventionally, a trainee’s performance is evaluated

by qualitative methods that are time-consuming and prone to

bias. Using autonomous and quantitative surgical skill assessment

improves the consistency, repeatability, and reliability

of the evaluation. To this end, this paper proposes a videobased

deep learning framework for surgical skill assessment.

By incorporating prior knowledge on surgeon’s activity in

the system design, we decompose the complex task of spatiotemporal

representation learning from video recordings into

two independent, relatively-simple learning processes, which

greatly reduces the model size. We evaluate the proposed

framework using the publicly available JIGSAWS robotic

surgery dataset and demonstrate its capability to learn the

underlying features of surgical maneuvers and the dynamic

interplay between sequences of actions effectively. The skill

level classification accuracy of 97:27% on the public dataset

demonstrates the superiority of the proposed model over prior

video-based skill assessment methods.
Verdunstungsmessungen In Einem Ringförmigen Wind-Wasser-Kanal Mit Hilfe Von Psychochrometern Und Einem Wld-System
Creators: name: Weißer, Fritz
Publisher: name: Zenodo
Year: 1980
Subjects: Evaporation, wind/wave facility

description: Zur kontinuierlichen Messung von Feuchtemittelwerten im Wind-Wasser-Kanal werden zwei nichtventilierte Psychrometer verwendet. Ihre Meßgenauigkeit (ein σ-Fehler) liegt bei großen relativen Feuchten und hohen Temperaturen (h > 0,9; T ~ 35°C) bei 0,25%. Bei kleinen relativen Feuchten und niedrigen Temperaturen (h ≈ 0,6; T ≈ 5°C) liegt dieser Fehler zwischen 1% und 2%.

Ein weiteres Feuchtemeßsystem mit einer guten Orts- und Zeitauflösung (vertikal 0,1 cm, horizontal 0,2 cm , τ ≈ 2 sec) erlaubt es, Feuchteprofile im Gasraum des Wind-Wasser-Kanals zu messen. Dabei kommt ein Wärmeleitfähigkeitsdetektor (WLD) zum Einsatz. Um einer Korrosion der Heizdrähte vorzubeugen, wird der WLD bei einem möglichst kleinen Heizstrom betrieben (83 mA statt maximal 300 mA bei Helium). Im Wind-Wasser-Kanal entstehen durch den Windantrieb und den Spülstrom Druckschwankungen, die ein Rauschen des Signals bis zu 2% relativer Feuchte bei 20°C erzeugen. Trotzdem läßt sich durch genügend lange Mittlungszeiten (etwa 15 sec) eine Auflösung von 0,25% relativer Feuchte erreichen.

Bei der Messung von Feuchtewerten ist die Störung der Rotationssymmetrie der Feuchteverteilung durch den Spülstrom zu berücksichtigen. Die Störung ist etwa 5%, bezogen auf das mittlere Feuchtedefizit in dem Gasraum. Die Störung nimmt mit (in Windrichtung) zunehmender Entfernung vom Gaseinlaß ab. Sie ist aber nahezu unabhängig von der Windgeschwindigkeit und dem Spülstrom.

Die Strömungsverhältnisse im Wind-Wasser-Kanal wurden durch Messung eines zweidimensionalen Feuchteprofils sichtbar gemacht. Man gewinnt so einen Eindruck von dem Einfluß der Sekundärströmungen auf die Austauschprozesse. Der Hauptwiderstand für Verdunstung liegt weiterhin in der Grenzschicht. Eine - von der Kanalaußenwand nach innen gerichtete - Sekundärströmung trägt trockenere Luft von außen nach innen, wodurch ein Ausbilden des logarithmischen Feuchteprofils verhindert wird. Für kleine Windgeschwindigkeiten (ca. 1 m/sec) wird der mittlere Feuchtestrom um 40% erhöht, für große Windgeschwindigkeiten ist die Erhöhung deutlich geringer.

Die Verdunstungsgeschwindigkeiten wurden bis zu Windgeschwindigkeiten über 10 m/sec gemessen«. Der Meßfehler (ein σ-Fehler) nimmt von 3% bei kleinen Windgeschwindigkeiten bis auf 7% bei großen zu. Die Abhängigkeit der Verdunstungsgeschwindigkeit von der Wasseroberfläche und somit von dem Wellenbild wird aufgezeigt.
description: Staatsexamensarbeit
Touchalytics: On the Applicability of Touchscreen Input as a Behavioral Biometric for Continuous Authentication
Creators: name: Frank, Mario
name: Biedert, Ralf
name: Ma, Eugene
name: Martinovic, Ivan
name: Song, Dawn
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We investigate whether a classifier can continuously authenticate users based on the way they interact with the touchscreen of a smart phone. We propose a set of 30 behavioral touch features that can be extracted from raw touchscreen logs and demonstrate that different users populate distinct subspaces of this feature space. In a systematic experiment designed to test how this behavioral pattern exhibits consistency over time, we collected touch data from users interacting with a smart phone using basic navigation maneuvers, i.e., up-down and left-right scrolling. We propose a classification framework that learns the touch behavior of a user during an enrollment phase and is able to accept or reject the current user by monitoring interaction with the touch screen. The classifier achieves a median equal error rate of 0% for intra-session authentication, 2%-3% for inter-session authentication and below 4% when the authentication test was carried out one week after the enrollment phase. While our experimental findings disqualify this method as a standalone authentication mechanism for long-term authentication, it could be implemented as a means to extend screen-lock time or as a part of a multi-modal biometric authentication system.
description: to appear at IEEE Transactions on Information Forensics & Security; Download data from http://www.mariofrank.net/touchalytics/
Electronic structure and magnetism in two-dimensional hexagonal 5d transition metal carbides, Tan+1Cn (n=1,2,3)
Creators: name: Lane, Nina J.
name: Barsoum, Michel W.
name: Rondinelli, James M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences
subject: 82D80

description: Density functional calculations are used to investigate the electronic structure of two-dimensional 5d tantalum carbides with honeycomb-like lattice structures. We focus on changes in the low-energy bands near the Fermi level with dimensionality. We find that the Ta 5d states dominate, but the extended nature of the wavefunctions makes them weakly correlated. The carbide sheets are prone to long range magnetic order. We evaluate the stability of these states to enhanced electron--electron interactions through a Hubbard U correction. Lastly, we find spin orbit interactions strongly renormalize the band structure for n=2, but play a minor role in n=1 and 3.
description: 4 pages, 4 figures
Artificial Intelligence-Driven Customized Manufacturing Factory: Key Technologies, Applications, and Challenges
Creators: name: Wan, Jiafu
name: Li, Xiaomin
name: Dai, Hong-Ning
name: Kusiak, Andrew
name: Martínez-García, Miguel
name: Li, Di
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Multiagent Systems (cs.MA)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences
subject: I.2.1; I.2.11; I.2.9
subject: 68T40, 68T42, 68T05

description: The traditional production paradigm of large batch production does not offer flexibility towards satisfying the requirements of individual customers. A new generation of smart factories is expected to support new multi-variety and small-batch customized production modes. For that, Artificial Intelligence (AI) is enabling higher value-added manufacturing by accelerating the integration of manufacturing and information communication technologies, including computing, communication, and control. The characteristics of a customized smart factory are to include self-perception, operations optimization, dynamic reconfiguration, and intelligent decision-making. The AI technologies will allow manufacturing systems to perceive the environment, adapt to external needs, and extract the processed knowledge, including business models, such as intelligent production, networked collaboration, and extended service models. This paper focuses on the implementation of AI in customized manufacturing (CM). The architecture of an AI-driven customized smart factory is presented. Details of intelligent manufacturing devices, intelligent information interaction, and the construction of a flexible manufacturing line are showcased. The state-of-the-art AI technologies of potential use in CM, i.e., machine learning, multi-agent systems, Internet of Things, big data, and cloud-edge computing are surveyed. The AI-enabled technologies in a customized smart factory are validated with a case study of customized packaging. The experimental results have demonstrated that the AI-assisted CM offers the possibility of higher production flexibility and efficiency. Challenges and solutions related to AI in CM are also discussed.
description: 21 pages, 12 figures
Experimental implementation of a Kochen-Specker set of quantum tests
Creators: name: D'Ambrosio, Vincenzo
name: Herbauts, Isabelle
name: Amselem, Elias
name: Nagali, Eleonora
name: Bourennane, Mohamed
name: Sciarrino, Fabio
name: Cabello, Adan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The conflict between classical and quantum physics can be identified through a series of yes-no tests on quantum systems, without it being necessary that these systems be in special quantum states. Kochen-Specker (KS) sets of yes-no tests have this property and provide a quantum-versus-classical advantage that is free of the initialization problem that affects some quantum computers. Here, we report the first experimental implementation of a complete KS set that consists of 18 yes-no tests on four-dimensional quantum systems and show how to use the KS set to obtain a state-independent quantum advantage. We first demonstrate the unique power of this KS set for solving a task while avoiding the problem of state initialization. Such a demonstration is done by showing that, for 28 different quantum states encoded in the orbital-angular-momentum and polarization degrees of freedom of single photons, the KS set provides an impossible-to-beat solution. In a second experiment, we generate maximally contextual quantum correlations by performing compatible sequential measurements of the polarization and path of single photons. In this case, state independence is demonstrated for 15 different initial states. Maximum contextuality and state independence follow from the fact that the sequences of measurements project any initial quantum state onto one of the KS set's eigenstates. Our results show that KS sets can be used for quantum-information processing and quantum computation and pave the way for future developments.
description: REVTeX, 15 pages, 4 figures
Translating, Interpreting And Communication Support Services Across The Public Sector In Scotland A Literature Review
Creators: name: McPake, Joanna
name: Johnstone, Richard
Publisher: name: Zenodo
Year: 2002
Subjects: public service interpreting and translation
Scotland
literature review
communication support
European policy
service provision
service delivery
training
standards

description: The review identifies and synthesizes key UK and international literature, highlighting key issues emerging from, and gaps in, public service interpreting and translation literature.

"The purpose of this review of research, policy and practice relating to translating, interpreting and communication support services across the public sector in Scotland is to inform the Translation, Interpreting and Communications Support Services Framework Group in its work to develop a national cross-sectoral framework of standards for these services."
description: "Guiding principles for the work of this group include the goal of meeting the communications support and language needs of the community and avoiding discrimination through failure to deal with these issues and other barriers to equal access (Scottish Forum for Public Service Interpreting and Translating, 2000: Good Practice Guidelines)."
Gasaustausch Und Wärmetransfer Bei Freier Konvektion Und Unter Einfluss Von Wellen - Aufbau Einer Apparatur Und Erste Ergebnisse
Creators: name: Bönisch, Klaus
Publisher: name: Zenodo
Year: 1981
Subjects: gas exchange
heat transfer
free convection
water wave

description: Staatsexamensarbeit on gas exchange and heat transfer under the influence of free convection and short waves in a small laboratory facility.
Hands-on Hypoxia Lesson Plans
Creators: name: Thrash, Cameron
name: Kelly, Kyla
name: Schiksnis, Cara
name: Kast, Dieuwertje
Publisher: name: figshare
Year: 2023
Subjects: Microbiology not elsewhere classified
Biological oceanography

description: Four lesson plans, answer keys, and pre- and post-tests to teach students about marine microorganisms and oxygen depletion in ocean systems.
Reflection subgroups of odd-angled Coxeter groups
Creators: name: Felikson, Anna
name: Fintzen, Jessica
name: Tumarkin, Pavel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F55, 51F15

description: We give a criterion for a finitely generated odd-angled Coxeter group to have a proper finite index subgroup generated by reflections. The answer is given in terms of the least prime divisors of the exponents of the Coxeter relations.
description: 28 pages, lots of figures; accepted version, to appear in J. Combin. Theory A
Exciton landscape in van der Waals heterostructures
Creators: name: Hagel, Joakim
name: Brem, Samuel
name: Linderälv, Christopher
name: Erhart, Paul
name: Malic, Ermin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: van der Waals heterostructures consisting of vertically stacked transition-metal dichalcogenides (TMDs) exhibit a rich landscape of bright and dark intra- and interlayer excitons. In spite of a growing literature in this field of research, the type of excitons dominating optical spectra in different van der Waals heterostructures has not yet been well established. The spectral position of exciton states depends strongly on the strength of hybridization and energy renormalization due to the periodic moiré potential. Combining exciton density-matrix formalism and density-functional theory, we shed light on the exciton landscape in TMD homo- and heterobilayers at different stackings. This allows us to identify on a microscopic footing the energetically lowest-lying exciton state for each material and stacking. Furthermore, we disentangle the contribution of hybridization and layer polarization-induced alignment shifts of dark and bright excitons in photoluminescence spectra. By revealing the exciton landscape in van der Waals heterostructures, our work provides the basis for further studies of the optical, dynamical, and transport properties of this technologically promising class of nanomaterials.
description: 15 pages, 9 figures
Ferromagnetic state in the one-dimensional Kondo lattice model
Creators: name: Peters, Robert
name: Kawakami, Norio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In our recent study, Phys. Rev. Lett. 108 086402 (2012), we have revealed the intriguing properties of the ferromagnetic state in the Kondo lattice model with antiferromagnetic coupling in infinite dimensions: within the ferromagnetic metallic phase, the minority conduction electrons form a gap at the Fermi energy and do not participate in transport irrespective of interaction strength and filling. This half-metallic state is referred to as a spin-selective Kondo insulator. We here show that the spin-selective Kondo insulator can also be realized in the one-dimensional Kondo lattice model by studying static and dynamical quantities with the density matrix renormalization group. The emergence of the spin selective Kondo insulator both in one and infinite dimensions certainly demonstrates that this mechanism is quite general and ubiquitous for the ferromagnetic state in the Kondo lattice model irrespective of the dimensionality of the system.
description: 7 pages, revised version
Twin inequality for fully contextual quantum correlations
Creators: name: Cabello, Adan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum mechanics exhibits a very peculiar form of contextuality. Identifying and connecting the simplest scenarios in which more general theories can or cannot be more contextual than quantum mechanics is a fundamental step in the quest for the principle that singles out quantum contextuality. The former scenario corresponds to the Klyachko-Can-Binicioglu-Shumovsky (KCBS) inequality. Here we show that there is a simple tight inequality, twin to the KCBS, for which quantum contextuality cannot be outperformed. In a sense, this twin inequality is the simplest tool for recognizing fully contextual quantum correlations.
description: REVTeX4, 4 pages, 1 figure
Vegetable seed systems in Ethiopia: challenges and opportunities
Creators: name: Boset AM
name: Esleman YA
name: Legesse WB
name: Schreinemachers P
Publisher: name: World Vegetable Center
Year: 2024
Subjects: subject: Vegetable seed systems
subject: Ethiopia agriculture
subject: Seed sector challenges
subject: Opportunities in vegetable farming
subject: Seed policy and regulation

description: This report analyzes the challenges and opportunities within Ethiopia’s vegetable seed system. It highlights constraints such as dependency on imports, lack of local breeding programs, and regulatory challenges while identifying opportunities like favorable agroecological conditions and increasing demand for vegetable crops.
Jackson Park in the Past and Present: Major Points of Change and their Impact on Local Communities
Creators: name: Scotty, Emma
Publisher: name: University of Chicago
Year: 2018
Subjects: subject: Jackson Park
subject: South Side
subject: World's Columbian Exposition
subject: the Obama Presidential Center
subject: city politics
subject: community organizing
subject: Woodlawn
subject: Hyde Park
subject: South Shore
subject: urban planning
subject: community infrastructure

description: Jackson Park has been an integral public space in Chicago’s South Side for over a century. As the site of the 1893 Columbian Exposition, the park began its existence as the place where Chicago introduced itself to the world. Since then, several major changes have disrupted Jackson Park and its public use. The U.S. Army used parkland to store missiles, the City of Chicago attempted to reroute Lake Shore Drive through the Park, and private entity Project 120 has proposed developments of a large-scale music venue. This paper examines the ventures that not only threatened to physically change the park, but also compromised local communities of park users and the way they interact with Jackson Park. Most recently, Jackson Park faces major upheaval due to the forthcoming Obama Presidential Center and golf course renovation. Since Jackson Park has been similarly threatened in the past, I examine both the effect and the response towards park changes in order to inform the best ways for the concerned community members to proceed in relation to upcoming projects. Most notably, these past examples tell us that the community of Jackson Park users is often put behind other concerns such as city finances and politics, which indicates that community action is the best, and often only, way for locals to attempt to keep Jackson Park a usable public space.
Hands-on Hypoxia Lesson Plans
Creators: name: Thrash, Cameron
name: Kelly, Kyla
name: Schiksnis, Cara
name: Kast, Dieuwertje
Publisher: name: figshare
Year: 2022
Subjects: Microbiology not elsewhere classified
Biological oceanography

description: Four lesson plans to teach students about marine microorganisms and oxygen depletion in ocean systems.
EDUCAÇÃO EMPREENDEDORA NO COLÉGIO MILITAR DE CURITIBA
Creators: name: Gusmão, Célia Regina Rodrigues
Publisher: name: Zenodo
Year: 2019
Subjects: empreendedorismo,
Jovem Empreendedor Primeiros Passos
educação empreendedora

description: Este artigo tem por finalidade apresentar as características da criação do Programa Jovem Empreendedor Primeiros Passos no Colégio Militar de Curitiba (CMC), em 2017, como forma de registro dessa importante atividade realizada no turno integral. Também tem por finalidade apresentar os objetivos da Educação Empreendedora promovida pelo SEBRAE-PR, por meio do programa mencionado, no CMC.
Improving 360 Monocular Depth Estimation via Non-local Dense Prediction Transformer and Joint Supervised and Self-supervised Learning
Creators: name: Yun, Ilwi
name: Lee, Hyuk-Jae
name: Rhee, Chae Eun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Due to difficulties in acquiring ground truth depth of equirectangular (360) images, the quality and quantity of equirectangular depth data today is insufficient to represent the various scenes in the world. Therefore, 360 depth estimation studies, which relied solely on supervised learning, are destined to produce unsatisfactory results. Although self-supervised learning methods focusing on equirectangular images (EIs) are introduced, they often have incorrect or non-unique solutions, causing unstable performance. In this paper, we propose 360 monocular depth estimation methods which improve on the areas that limited previous studies. First, we introduce a self-supervised 360 depth learning method that only utilizes gravity-aligned videos, which has the potential to eliminate the needs for depth data during the training procedure. Second, we propose a joint learning scheme realized by combining supervised and self-supervised learning. The weakness of each learning is compensated, thus leading to more accurate depth estimation. Third, we propose a non-local fusion block, which can further retain the global information encoded by vision transformer when reconstructing the depths. With the proposed methods, we successfully apply the transformer to 360 depth estimations, to the best of our knowledge, which has not been tried before. On several benchmarks, our approach achieves significant improvements over previous works and establishes a state of the art.
description: 14 pages, Accepted to AAAI22, conference preprint version
How energy conservation limits our measurements
Creators: name: Navascues, Miguel
name: Popescu, Sandu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Observations in Quantum Mechanics are subject to complex restrictions arising from the principle of energy conservation. Determining such restrictions, however, has been so far an elusive task, and only partial results are known. In this paper we discuss how constraints on the energy spectrum of a measurement device translate into limitations on the measurements which we can effect on a target system with non-trivial energy operator. We provide efficient algorithms to characterize such limitations and we quantify them exactly when the target is a two-level quantum system. Our work thus identifies the boundaries between what is possible or impossible to measure, i.e., between what we can see or not, when energy conservation is at stake.
description: Better read the 5-page published version first
Aufbau Eines Optischen Verfahrens Zur Messung Von Gasblasen In Wasser; Einfluss Von Gasblasen Auf Den Gasaustausch
Creators: name: Wais, Thomas
Publisher: name: Zenodo
Year: 1983
Subjects: gas bubbles
breaking waves
gas exchange

description: Diploma thesis on optical mesurement of gas bubbles submerged by breaking wind waves and on bubble-induced air-sea gas transfer.
The massive elliptical galaxy NGC 4649 from the perspective of extended gravity
Creators: name: Jimenez, M. A.
name: Garcia, G.
name: Hernandez, X.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Elliptical galaxies are systems where dark matter is usually less necessary to explain observed dynamics than in the case of spiral galaxies, however there are some instances where Newtonian gravity and the observable mass are insufficient to explain their observed structure and kinematics. Such is the case of NGC 4649, a massive elliptical galaxy in the Virgo cluster for which recent studies report a high fraction of dark matter, 0.78 at $4R_e$. However this galaxy has been studied within the MOND hypothesis, where a good agreement with the observed values of velocity dispersion is found. Using a MONDian gravity force law, here we model this galaxy as a self-consistent gravitational equilibrium dynamical system. This force law reproduces the MOND phenomenology in the $aa_{0}$. Within the MONDian $a
description: 9 pages, 6 figures. Acepted in ApJ
Binary-state dynamics on complex networks: pair approximation and beyond
Creators: name: Gleeson, James P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A wide class of binary-state dynamics on networks---including, for example, the voter model, the Bass diffusion model, and threshold models---can be described in terms of transition rates (spin-flip probabilities) that depend on the number of nearest neighbors in each of the two possible states. High-accuracy approximations for the emergent dynamics of such models on uncorrelated, infinite networks are given by recently-developed compartmental models or approximate master equations (AME). Pair approximations (PA) and mean-field theories can be systematically derived from the AME. We show that PA and AME solutions can coincide under certain circumstances, and numerical simulations confirm that PA is highly accurate in these cases. For monotone dynamics (where transitions out of one nodal state are impossible, e.g., SI disease-spread or Bass diffusion), PA and AME give identical results for the fraction of nodes in the infected (active) state for all time, provided the rate of infection depends linearly on the number of infected neighbors. In the more general non-monotone case, we derive a condition---that proves equivalent to a detailed balance condition on the dynamics---for PA and AME solutions to coincide in the limit $t \to \infty$. This permits bifurcation analysis, yielding explicit expressions for the critical (ferromagnetic/paramagnetic transition) point of such dynamics, closely analogous to the critical temperature of the Ising spin model. Finally, the AME for threshold models of propagation is shown to reduce to just two differential equations, and to give excellent agreement with numerical simulations. As part of this work, Octave/Matlab code for implementing and solving the differential equation systems is made available for download.
description: This version accepted for publication in Physical Review X. Octave/Matlab code for implementing and solving the differential equation systems is available from http://www.ul.ie/gleesonj
Scaling properties of scale-free networks in degree-thresholding renormalization flows
Creators: name: Chen, Dan
name: Cai, Defu
name: Su, Housheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We study the statistical properties of observables of scale-free networks in the degree-thresholding renormalization (DTR) flows. For BA scale-free networks with different sizes, we find that their structural and dynamical observables have similar scaling behavior in the DTR flow. The finite-size scaling analysis confirms this view and reveals a scaling function with a single scaling exponent that collectively captures the changes of these observables. Furthermore, for the scale-free network with a single initial size, we use its DTR snapshots as the original networks in the DTR flows, then perform a similar finite-size scaling analysis. Interestingly, the initial network and its snapshots share the same scaling exponent as the BA synthetic network. Our findings have important guiding significance for analyzing the structure and dynamic behavior of large-scale networks. Such as, in large-scale simulation scenarios with high time complexity, the DTR snapshot could serve as a substitute or guide for the initial network and then quickly explore the scaling behavior of initial networks.
The Forgotten Preconditions for a Well-Functioning Internet
Creators: name: Goodell, Geoff
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: For decades, proponents of the Internet have promised that it would one day provide a seamless way for everyone in the world to communicate with each other, without introducing new boundaries, gatekeepers, or power structures. What happened? This article explores the system-level characteristics of a key design feature of the Internet that helped it to achieve widespread adoption, as well as the system-level implications of certain patterns of use that have emerged over the years as a result of that feature. Such patterns include the system-level acceptance of particular authorities, mechanisms that promote and enforce the concentration of power, and network effects that implicitly penalise those who do not comply with decisions taken by privileged actors. We provide examples of these patterns and offer some key observations, toward the development of a general theory of why they emerged despite our best efforts, and we conclude with some suggestions on how we might mitigate the worst outcomes and avoid similar experiences in the future.
description: 11 pages, 1 figure
Clustering Human Trust Dynamics for Customized Real-time Prediction
Creators: name: Liu, Jundi
name: Akash, Kumar
name: Misu, Teruhisa
name: Wu, Xingwei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Trust calibration is necessary to ensure appropriate user acceptance in advanced automation technologies. A significant challenge to achieve trust calibration is to quantitatively estimate human trust in real-time. Although multiple trust models exist, these models have limited predictive performance partly due to individual differences in trust dynamics. A personalized model for each person can address this issue, but it requires a significant amount of data for each user. We present a methodology to develop customized model by clustering humans based on their trust dynamics. The clustering-based method addresses the individual differences in trust dynamics while requiring significantly less data than personalized model. We show that our clustering-based customized models not only outperform the general model based on entire population, but also outperform simple demographic factor-based customized models. Specifically, we propose that two models based on ``confident'' and ``skeptical'' group of participants, respectively, can represent the trust behavior of the population. The ``confident'' participants, as compared to the ``skeptical'' participants, have higher initial trust levels, lose trust slower when they encounter low reliability operations, and have higher trust levels during trust-repair after the low reliability operations. In summary, clustering-based customized models improve trust prediction performance for further trust calibration considerations.
description: To be published in 2021 IEEE 24rd International Conference on Intelligent Transportation Systems (ITSC)
Reconstruction of Higgs bosons in the di-tau channel via 3-prong decay
Creators: name: Gripaios, Ben
name: Nagao, Keiko
name: Nojiri, Mihoko
name: Sakurai, Kazuki
name: Webber, Bryan
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We propose a method for reconstructing the mass of a particle, such as the Higgs boson, decaying into a pair of tau leptons, of which one subsequently undergoes a 3-prong decay. The kinematics is solved using information from the visible decay products, the missing transverse momentum, and the 3-prong tau decay vertex, with the detector resolution taken into account using a likelihood method. The method is shown to give good discrimination between a 125 GeV Higgs boson signal and the dominant backgrounds, such as Z decays to tau tau and W plus jets production. As a result, we find an improvement, compared to existing methods for this channel, in the discovery potential, as well as in measurements of the Higgs boson mass and production cross section times branching ratio.
description: 19 pages, 8 figures
Graph-Based Machine Learning Improves Just-in-Time Defect Prediction
Creators: name: Bryan, Jonathan
name: Moriano, Pablo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The increasing complexity of today's software requires the contribution of thousands of developers. This complex collaboration structure makes developers more likely to introduce defect-prone changes that lead to software faults. Determining when these defect-prone changes are introduced has proven challenging, and using traditional machine learning (ML) methods to make these determinations seems to have reached a plateau. In this work, we build contribution graphs consisting of developers and source files to capture the nuanced complexity of changes required to build software. By leveraging these contribution graphs, our research shows the potential of using graph-based ML to improve Just-In-Time (JIT) defect prediction. We hypothesize that features extracted from the contribution graphs may be better predictors of defect-prone changes than intrinsic features derived from software characteristics. We corroborate our hypothesis using graph-based ML for classifying edges that represent defect-prone changes. This new framing of the JIT defect prediction problem leads to remarkably better results. We test our approach on 14 open-source projects and show that our best model can predict whether or not a code change will lead to a defect with an F1 score as high as 77.55% and a Matthews correlation coefficient (MCC) as high as 53.16%. This represents a 152% higher F1 score and a 3% higher MCC over the state-of-the-art JIT defect prediction. We describe limitations, open challenges, and how this method can be used for operational JIT defect prediction.
description: 22 pages, 2 figures, 4 tables; references added; expanded results to match baseline conditions
Data management in perspective: the career profile of conservators
Creators: name: Molloy, Laura
name: Snow, Kellie
name: Goldstein, Stephane
name: Davidson, Joy
Publisher: name: Zenodo
Year: 2011
Subjects: conservation, conservator, career profile, resarch data manager

description: The Data Management Skills Support Initiative (DaMSSI) has drawn together a range of short career profiles to illustrate the relevance of data management skills to four graduate professions represented by training projects of the JISC Managing Research Data programme 2009-13. These professions are: conservator; social science researcher; clinical psychologist and archaeologist. In addition a fifth profile describes the role of data manager. Each profile demonstrates how the value of data management skills learned alongside other research skills during graduate and postgraduate study contributes to and underpins high-quality professional performance.
 DaMSSI has developed this career profile for describing the work of conservators, to help raise awareness about this profession.
description: The project is described here: https://core.ac.uk/download/pdf/296147915.pdf
Media abnormal tone, earnings announcements, and the stock market
Creators: name: Ardia, David
name: Bluteau, Keven
name: Boudt, Kris
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Finance (q-fin.GN)
subject: FOS: Economics and business

description: We conduct a tone-based event study to examine the aggregate abnormal tone dynamics in media articles around earnings announcements. We test whether they convey incremental information that is useful for price discovery for nonfinancial S&P 500 firms. The relation we find between the abnormal tone and abnormal returns suggests that media articles provide incremental information relative to the information contained in earnings press releases and earnings calls.
description: Forthcoming in Journal of Financial Markets
Weighed scalar averaging in LTB dust models, part I: statistical fluctuations and gravitational entropy
Creators: name: Sussman, Roberto A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We introduce a weighed scalar average formalism ("q-average") for the study of the theoretical properties and the dynamics of spherically symmetric Lemaitre-Tolman-Bondi (LTB) dust models models. The "q-scalars" that emerge by applying the q-averages to the density, Hubble expansion and spatial curvature (which are common to FLRW models) are directly expressible in terms of curvature and kinematic invariants and identically satisfy FLRW evolution laws without the back-reaction terms that characterize Buchert's average. The local and non-local fluctuations and perturbations with respect to the q-average convey the effects of inhomogeneity through the ratio of curvature and kinematic invariants and the magnitude of radial gradients. All curvature and kinematic proper tensors that characterize the models are expressible as irreducible algebraic expansions on the metric and 4-velocity, whose coefficients are the q-scalars and their linear and quadratic local fluctuations. All invariant contractions of these tensors are quadratic fluctuations, whose q-averages are directly and exactly related to statistical correlation moments of the density and Hubble expansion scalar. We explore the application of this formalism to a definition of a gravitational entropy functional proposed by Hosoya et al (2004 Phys. Rev. Lett. 92 141302). We show that a positive entropy production follows from a negative correlation between fluctuations of the density and Hubble scalar, providing a brief outline on its fulfillment in various LTB models and regions. While the q-average formalism is specially suited for LTB and Szekeres models, it may provide a valuable theoretical insight on the properties of scalar averaging in inhomogeneous spacetimes in general.
description: 27 pages in IOP format, 1 figure. Matches version accepted for publication in Classical and Quantum Gravity
Persistent homology of quantum entanglement
Creators: name: Olsthoorn, Bart
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Structure in quantum entanglement entropy is often leveraged to focus on a small corner of the exponentially large Hilbert space and efficiently parameterize the problem of finding ground states. A typical example is the use of matrix product states for local and gapped Hamiltonians. We study the structure of entanglement entropy using persistent homology, a relatively new method from the field of topological data analysis. The inverse quantum mutual information between pairs of sites is used as a distance metric to form a filtered simplicial complex. Both ground states and excited states of common spin models are analyzed as an example. Furthermore, the effect of homology with different coefficients and boundary conditions is also explored. Beyond these basic examples, we also discuss the promising future applications of this modern computational approach, including its connection to the question of how spacetime could emerge from entanglement.
description: 14 pages, 12 figures