cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ALICE ITS upgrade for LHC Run 3: commissioning in the laboratory
Creators: name: Colella, Domenico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: ALICE is the CERN LHC experiment optimised for the study of the strongly interacting matter produced in heavy-ion collisions and devoted to the characterisation of the quark-gluon plasma. To achieve the physics program for LHC Run 3, a major upgrade of the experimental apparatus is ongoing. A key element of the upgrade is the substitution of the Inner Tracking System (ITS) with a completely new silicon-based detector whose features will allow the reconstruction of rare physics channels, not accessible with the previous layout. The enabling technology for such a performance boost is the adoption of custom-designed CMOS MAPS as detecting elements. The installation of the detector in the ALICE cavern is completed and few months of commissioning will allow the final integration into the central systems. In this talk, an overview of the adopted technologies as well as the status of the detector commissioning will be given.
description: Proceedings of International Conference on Technology and Instrumentation in Particle Physics (TIPP2021), May 24-28, 2021, Online format, 4 pages
Grow your own future: reflections on the past and present of a grow your own teacher program
Creators: name: Bouie, Ian G.
Publisher: name: No Publisher Supplied
Year: 2022

description: The national teacher shortage seems to be a never-ending crisis in our country. This shortage is even more alarming for teachers of color. While more than half of the students in the United States are non-white, less than 25 percent of their teachers are people of color (U.S. Department of Education, 2016; Lindsay, Blom, & Tilsley, 2017). Studies have shown that teachers of color are better prepared to teach students of color than white teachers because they can better understand their pupils’ backgrounds, experiences, and culturally unique aspects of their lives (Borrero et al., 2016; Milner, 2006). (Borrero et al., 2016; Milner, 2006)One possible way to remedy this problem is the Grow Your Own (GYO) movement. These programs recruit students from their communities who are interested in working in those communities with the belief that their connections and roots will make them more likely to remain in the profession (Gist, 2018). This movement is especially significant in addressing the lack of teachers of color by emphasizing recruitment, retention, access, support, and school-district-community partnerships. This qualitative study investigated a GYO program that recruited students from high schools in an urban school district to attend a local university on a scholarship that was based on the agreement that they would return to their hometown to teach for a minimum of three years. Interviews were conducted with alumni and former administrators of the now-defunct program to assess this endeavor’s impact. Using the conceptual framework of “othermothering”, the research sought to determine how the program influenced former students’ academic and professional lives.Findings revealed that the program had a substantial impact on its participants. The access, resources, and mentorship provided by the program and its staff significantly contributed to the success of its alumni. Participants cited the family structure, support system, and open-door policy of the program staff as crucial to graduating from college with teacher certification and returning to their hometown to teach. The ethic of care shown to the participants as students is a trait they now share with their students in their own classrooms.
title: Проектирование дорог в сложных условиях
Creators: name: ELS IPR BOOKS
Publisher: name: Липецкий государственный технический университет, Профобразование
Year: 2023

description: В учебно-методическом пособии рассмотрены вопросы проектирования автомобильных дорог в трудных геологических и климатических условиях. Даны примеры расчётов серпантин и барражей для закрепления дна оврага, основные положения, порядок, методика выполнения и пример расчетов. Приведены необходимые справочные данные и индивидуальные задания для расчетов, список рекомендуемой литературы. Подготовлено в соответствии с требованиями Федерального государственного образовательного стандарта среднего профессионального образования. Учебно-методическое пособие может быть использовано студентами, обучающимися по специальности 08.02.05 «Строительство и эксплуатация автомобильных дорог и аэродромов» при изучении дисциплин «Участие в изыскании и проектировании автомобильных дорог и аэродромов», «Строительство автомобильных дорог и аэродромов».
Scattering amplitudes of regularized bosonic strings
Creators: name: Ambjorn, J.
name: Makeenko, Y.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute scattering amplitudes of the regularized bosonic Nambu-Goto string in the mean-field approximation, disregarding fluctuations of the Lagrange multiplier and an independent metric about their mean values. We use the previously introduced Lilliputian scaling limit to recover the Regge behavior of the amplitudes with the usual linear Regge trajectory in space-time dimensions d>2. We demonstrate a stability of this minimum of the effective action under fluctuations for d<26.
description: 11 pages, v2: typos corrected, to appear in PRD
Probing primordial black holes with anisotropies in stochastic gravitational-wave background
Creators: name: Wang, Sai
name: Vardanyan, Valeri
name: Kohri, Kazunori
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Primordial black holes, if considered to constitute a significant fraction of cold dark matter, trace the inhomogeneous large-scale structure of the Universe. Consequently, the stochastic gravitational-wave background, originating from incoherent superposition of unresolved signals emitted by primordial black hole binaries, is expected to display anisotropies across the sky. In this work, we investigate the angular correlations of such anisotropies for the first time and demonstrate their difference from the analogous signal produced by astrophysical black hole binaries. We carefully evaluate the associated uncertainties due to shot-noise and cosmic variance, and demonstrate that the studied signal in the low-frequency regime can be differentiated from the signal of astrophysical origin. Our results are particularly promising in the stellar mass-range, where the identification of the merger origin has been particularly challenging.
description: Version accepted for publication in PRD, 10 pages, 6 figures
Direito da propriedade industrial
Creators: name: Mendes, Evaristo
name: Andrade, António
name: Mioludo, João Paulo
Publisher: name: Propriedades Intelectuais
Year: 2016

description: O tema da Marca (anulação de registo de marca, prescrição e caducidade), assim como as denominações de origem e registo de marca parcialmente coincidente. A invalidade das patentes.
description: Propriedades Intelectuais, n. 5 (2016)
Critical noise can make the minority candidate win: The US Presidential Election cases
Creators: name: Biswas, Soumyajyoti
name: Sen, Parongama
Publisher: name: arXiv
Year: 2017
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: A national voting population, when segmented into groups like, for example, different states, can yield a counter-intuitive scenario where the winner may not necessarily get the most number of total votes. A recent example is the 2016 presidential election in the US. We model the situation by using interacting opinion dynamics models and look at the effect of coarse graining near the critical points where the spatial fluctuations are high. We establish that the sole effect of coarse graining, which mimics the `winner takes all' electoral college system in the US, can give rise to finite probabilities of such events of minority candidate winning even in the large size limit near the critical point. The overall probabilities of victory of the minority candidate can be predicted from the models which indicates that one may expect more instances of minority candidate winning in the future.
description: 7 pages, 8 figures
The HIBEAM/NNBAR Calorimeter Prototype
Creators: name: Dunne, K.
name: Meirose, B.
name: Milstead, D.
name: Oskarsson, A.
name: Santoro, V.
name: Silverstein, S.
name: Yiu, S-C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The HIBEAM/NNBAR experiment is a free-neutron search for $n \rightarrow$ sterile $n$ and $n \rightarrow \bar{n}$ oscillations planned to be installed at the European Spallation Source under construction in Lund, Sweden. A key component in the experiment is the detector to identify $n-\bar{n}$ annihilation events, which will produce on average four pions with a final state invariant mass of two nucleons, around $1.9\,$GeV. The beamline and experiment are shielded from magnetic fields which would suppress $n \rightarrow \bar{n}$ transitions, thus no momentum measurement will be possible. Additionally, calorimetry for particles with kinetic energies below $600\,$MeV is challenging, as traditional sampling calorimeters used in HEP would suffer from poor shower statistics. A design study is underway to use a novel approach of a hadronic range measurement in multiple plastic scintillator layers, followed by EM calorimetery with lead glass. A prototype calorimeter system is being built, and will eventually be installed at an ESS test beam line for \textit{in situ} neutron background studies.
description: Contribution to the International Conference on Technology and Instrumentation in Particle Physics (TIPP2021)
Direct identification of monolayer rhenium diselenide by an individual diffraction pattern
Creators: name: Fei, Zhen
name: Ho, Ching-Hwa
name: Lin, Fang
name: Yuan, Jun
name: Zhang, Ze
name: Jin, Chuanhong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the current extensive studies of transition metal dichalcogenides (TMDCs), compared to hexagonal layered materials, like graphene, hBN and MoS2, low symmetry layered 2D crystals showed great potential for applications in anisotropic devices. Rhenium diselenide (ReSe2) has the bulk space group P1 and belongs to triclinic crystal system with a deformed cadmium iodide type structure. Here we unambiguously determined monolayer and its vertical orientation of rhenium diselenide membrane with an individual electron diffraction pattern, which could be applicable to low symmetry crystal systems, including both triclinic and monoclinic lattices, as long as their third unit-cell basis vector is not perpendicular to basal plane. Atomically resolved image from probe corrected annular dark field scanning transmission electron microscope (ADF-STEM) was employed to validate layer number. Finally, experimental results were well explained by kinematical electron diffraction theory and corresponding simulations.
description: 11 pages, 4 figures
Metallic transports from accelerating black holes
Creators: name: Roychowdhury, Dibakar
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We probe four dimensional accelerating black holes with D-brane and build up the notion of metallic holography for spacetime with negative cosmological constant. We explore various thermodynamic entities associated with the boundary QFT at low temperatures and finite chemical potential. The DC conductivity in the boundary QFT is enhanced due to the effects of black hole acceleration in the bulk counterpart. We further compute resistivity in different temperature regime, which reveals a new quantum liquid phase with dynamic critical exponent $ z=3 $.
description: Minor revision, V2 to appear in JHEP
Comentário sobre o regime da exceção de cópia privada em Portugal e na Europa
Creators: name: Santos, António Paulo
name: Rosa, Victor Castro
Publisher: name: Propriedades Intelectuais
Year: 2016

description: (...) os desafios futuros com que se depara o instituto jurídico da cópia privada, passam por uma compreensão e integração de novos modelos de negócio que, apesar de não envolverem necessariamente uma reprodução duradoura das obras e prestações protegidas pelo Direito de Autor e Direitos Conexos, implicam sempre uma reprodução que, conquanto seja efémera, não deixa de ter valor económico autónomo, e de ter de ser efetuada para usos legítimos do beneficiário, o que a retira do campo da exceção prevista no n.º 1 do art. 5.º da Diretiva n.º 2001/29/CE, de 22 de maio, e antes a configura como faculdade inerente ao direito exclusivo do seu titular, conforme se espera que o TJUE venha a declarar, no Acórdão a proferir no Processo Case C-527/15 (Stichting BREIN v. Jack Frederik Wullems t/a Filmspeler). Trata-se do primeiro caso sobre a qualificação do “streaming” à luz daquela Diretiva.
description: Propriedades Intelectuais, n. 5 (2016)
Neutron spectroscopy with N$_2$-filled high-pressure large-volume spherical proportional counters
Creators: name: Giomataris, I.
name: Green, S.
name: Katsioulas, I.
name: Knights, P.
name: Manthos, I.
name: Matthews, J.
name: Neep, T.
name: Nikolopoulos, K.
name: Papaevangelou, T.
name: Phoenix, B.
name: Sanders, J.
name: Ward, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Precise in-situ measurements of the neutron flux in underground laboratories is crucial for direct dark matter searches, as neutron induced backgrounds can mimic the typical dark matter signal. The development of a novel neutron spectroscopy technique using Spherical Proportional Counters is investigated. The detector is operated with nitrogen and is sensitive to both fast and thermal neutrons through the $^{14}$N(n, $α$)$^{11}$B and $^{14}$N(n, p)$^{14}$C reactions. This method holds potential to be a safe, inexpensive, effective, and reliable alternative to $^3$He-based detectors. Measurements of fast and thermal neutrons from an Am-Be source with a Spherical Proportional Counter operated at pressures up to 2 bar at Birmingham are discussed.
description: 4 pages, 5 figures, International Conference on Technology and Instrumentation in Particle Physics (TIPP2021)
Oferta da utilização na Europa de um processo patenteado: diversidade e convergências
Creators: name: Kerber, Thierry
Publisher: name: Propriedades Intelectuais
Year: 2016

description: Em particular, o desenvolvimento das telecomunicações e da informática perturbaram os modos de funcionamento industriais e comerciais assim como as estratégias económicas. Assim, tornou-se possível desafiar o espaço, agindo a qualquer distância via Internet, desafiar o tempo, oferecendo sempre novas funcionalidades telecarregáveis metamorfoseando literalmente os dispositivos à disposição dos utilizadores, e desafiar a concentração das ações através do fracionamento de aplicação tecnológica entre vários operadores independentes. Estas mudanças continuam ainda hoje a um ritmo constante, fazendo parecer banal o que ainda eram, aos olhos do público da primeira metade do século xx, previsões extraordinárias de escritores e cientistas visionários.
description: Propriedades Intelectuais, n. 5 (2016)
Discovery of a Mid-infrared Echo from the TDE candidate in the nucleus of ULIRG F01004-2237
Creators: name: Dou, Liming
name: Wang, Tinggui
name: Yan, Lin
name: Jiang, Ning
name: Yang, Chenwei
name: Cutri, Roc M.
name: Mainzer, Amy
name: Peng, Bo
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the mid-infrared (MIR) light curves (LCs) of a tidal disruption event (TDE) candidate in the center of a nearby ultraluminous infrared galaxy (ULIRG) F01004-2237 using archival {\it WISE} and {\it NEOWISE} data from 2010 to 2016. At the peak of the optical flare, F01004-2237 was IR quiescent. About three years later, its MIR fluxes have shown a steady increase, rising by 1.34 and 1.04 mag in $3.4$ and $4.6μ$m up to the end of 2016. The host-subtracted MIR peak luminosity is $2-3\times10^{44}$\,erg\,s$^{-1}$. We interpret the MIR LCs as an infrared echo, i.e. dust reprocessed emission of the optical flare. Fitting the MIR LCs using our dust model, we infer a dust torus of the size of a few parsecs at some inclined angle. The derived dust temperatures range from $590-850$\,K, and the warm dust mass is $\sim7\,M_{\odot}$. Such a large mass implies that the dust cannot be newly formed. We also derive the UV luminosity of $4-11\times10^{44}$\,erg\,s$^{-1}$. The inferred total IR energy is $1-2\times10^{52}$\,erg, suggesting a large dust covering factor. Finally, our dust model suggests that the long tail of the optical flare could be due to dust scattering.
Constraint on Brans-Dicke theory from intermediate/extreme mass ratio inspirals
Creators: name: Jiang, Tong
name: Dai, Ning
name: Gong, Yungui
name: Liang, Dicong
name: Zhang, Chao
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Intermediate/Extreme mass ratio inspiral (I/EMRI) system provides a good tool to test the nature of gravity in strong field. Based on the method of osculating orbits, we compute the orbital evolutions of I/EMRIs on quasi-elliptic orbits in both Einstein's general relativity and Brans-Dicke theory. The extra monopolar and dipolar channels in Brans-Dicke theory accelerate the orbital decay, so it is important to consider the effects of monopolar and dipolar emissions on the waveform. With the help of accurate orbital motion, we generate waveform templates which include both monopolar and dipolar contributions for I/EMRIs on eccentric orbits in Brans-Dicke theory. With a two-year observation of gravitational waves emitted from I/EMRIs by LISA, we get the most stringent constraint on the Brans-Dicke coupling parameter $ω_0>10^6$.
description: Major revision by adding discussions on more mass ratios, but conclusions are strengthened, matched to the published JCAP version
Matched filtering with interferometric 21cm experiments
Creators: name: White, Martin
name: Padmanabhan, Nikhil
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A new generation of interferometric instruments is emerging which aim to use intensity mapping of redshifted $21\,$cm radiation to measure the large-scale structure of the Universe at $z\simeq 1-2$ over wide areas of sky. While these instruments typically have limited angular resolution, they cover huge volumes and thus can be used to provide large samples of rare objects. In this paper we study how well such instruments could find spatially extended large-scale structures, such as cosmic voids, using a matched filter formalism. Such a formalism allows us to work in Fourier space, the natural space for interferometers, and to study the impact of finite $u-v$ coverage, noise and foregrounds on our ability to recover voids. We find that in the absence of foregrounds such instruments would provide enormous catalogs of voids, with high completeness, but that control of foregrounds is key to realizing this goal.
description: 14 pages, 8 figures, minor revisions to match version accepted by MNRAS
O certificado complementar de proteção para medicamentos
Creators: name: Agapito, Inês
Publisher: name: Propriedades Intelectuais
Year: 2016

description: Desde a sua criação, o regime jurídico do Certificado Complementar de Proteção tem sido clarificado e aprofundado, em grande parte, graças aos contributos do TJUE. Contudo, mesmo no estádio atual, permanecem questões por resolver, sobretudo quanto aos requisitos de obtenção do CCP e ao respetivo âmbito de proteção e duração, que ainda deixam, assim, nalguma medida, em aberto o sentido da evolução deste instrumento jurídico do Direito da Propriedade Industrial. É, pois, de esperar que o TJUE continue a ser chamado para esclarecer os pontos em que ainda subsistem dúvidas, havendo já quem defenda, inclusivamente, a conveniência de proceder a alterações ao Regulamento n.º 469/2009, acomodando as interpretações e linhas de orientação que vêm sendo fornecidas pelo TJUE. Assim se promoveria uma maior certeza e segurança jurídicas, necessárias a uma definição clara dos contornos da proteção conferida pelos direitos de propriedade industrial no sector farmacêutico. Contudo, não se prevê que tal alteração legislativa seja fácil, atendendo aos diferentes interesses económicos em causa.
description: Propriedades Intelectuais, n. 5 (2016)
Nota de direção
Creators: name: Carretas, Miguel Lourenço
Publisher: name: Propriedades Intelectuais
Year: 2016

description: O fim da nossa última legislatura foi profícuo numa produção legislativa diretamente relacionada com o Direito de Autor e direitos com ele conexos. Cópia privada, lei das entidades de gestão coletiva, e alterações ao Código do Direitos de Autor, Memorando de entendimento relativo à “pirataria” digital, são temas dos quais temos feito eco e continuamos a dar voz neste mesmo número.
description: Propriedades Intelectuais, n. 5 (2016)
Forming short-period Wolf-Rayet X-ray binaries and double black holes through stable mass transfer
Creators: name: Heuvel, Edward P. J. van den
name: Zwart, Simon F. Portegies
name: de Mink, Selma E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We show that black-hole High-Mass X-ray Binaries (HMXBs) with O- or B-type donor stars and relatively short orbital periods, of order one week to several months may survive spiral in, to then form Wolf-Rayet (WR) X-ray binaries with orbital periods of order a day to a few days; while in systems where the compact star is a neutron star, HMXBs with these orbital periods never survive spiral-in. We therefore predict that WR X-ray binaries can only harbor black holes. The reason why black-hole HMXBs with these orbital periods may survive spiral in is: the combination of a radiative envelope of the donor star, and a high mass of the compact star. In this case, when the donor begins to overflow its Roche lobe, the systems are able to spiral in slowly with stable Roche-lobe overflow, as is shown by the system SS433. In this case the transferred mass is ejected from the vicinity of the compact star (so-called "isotropic re-emission" mass loss mode, or "SS433-like mass loss"), leading to gradual spiral-in. If the mass ratio of donor and black hole is $>3.5$, these systems will go into CE evolution and are less likely to survive. If they survive, they produce WR X-ray binaries with orbital periods of a few hours to one day. Several of the well-known WR+O binaries in our Galaxy and the Magellanic Clouds, with orbital periods in the range between a week and several months, are expected to evolve into close WR-Black-Hole binaries,which may later produce close double black holes. The galactic formation rate of double black holes resulting from such systems is still uncertain, as it depends on several poorly known factors in this evolutionary picture. It might possibly be as high as $\sim 10^{-5}$ per year.
description: MNRAS in press
Hybrid no-signaling-quantum correlations
Creators: name: Banacki, Michał
name: Mironowicz, Piotr
name: Ramanathan, Ravishankar
name: Horodecki, Paweł
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Fundamental investigations in non-locality have shown that while the no-signaling principle alone is not sufficient to single out the set of quantum non-local correlations, local quantum mechanics and no-signaling together exactly reproduce the set of quantum correlations in the two-party Bell scenario. Here, we introduce and study an intermediate hybrid no-signaling quantum set of non-local correlations that we term $\textbf{HNSQ}$ in the multi-party Bell scenario where some subsystems are locally quantum while the remaining subsystems are only constrained by the no-signaling principle. Specifically, the set $\textbf{HNSQ}$ is a super-quantum set of correlations derived from no-signaling assemblages by performing quantum measurements on the trusted subsystems. As a tool for optimization over the set $\textbf{HNSQ}$, we introduce an outer hierarchy of semi-definite programming approximations to the set following an approach put forward by Doherty-Parillo-Spedalieri. We then show that in contrast to the set $\textbf{NS}$ of no-signaling correlations, there exist extreme points of $\textbf{HNSQ}$ in the tripartite Bell scenario that admit quantum realization. We perform an extensive numerical analysis of the maximal violation of the facet Bell inequalities in the three-party binary input-output scenario and study the corresponding self-testing properties. In contrast to the usual no-signaling correlations, the new set allows for simple security proofs of (one-sided)-device-independent applications against super-quantum adversaries.
description: 11 pages, 1 figure
Performance of a fast timing micro-pattern gaseous detector for future collider experiments
Creators: name: Pellecchia, Antonello
name: Verwilligen, Piet
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The fast timing MPGD is a micro-pattern gaseous detector conceived for achieving sub-nanosecond time resolution while maintaining the ability to instrument large areas in high-rate environments; applications of such technology are perspected in high-energy physics experiments at future colliders and medical diagnostics with time-of-flight methods. This work shows the systematic studies carried on an FTM prototype on the performance of GEM foils coated with resistive DLC films, whose development is essential for the FTM operation. The resistive foil performance has been tested with several gas mixtures and compared with the results obtained on conductive foils. The results show that the performance of the FTM is presently limited by the technology of manufacturing of DLC-coated GEM foils, with high gains reachable exclusively in isobuthane-based mixtures.
title: Intelligent Real-Time Control of a Multifingered Robot Gripper by Learning Incremental Actions
Creators: name: Kleinmann, Karl
name: Hormel, Michael
name: Paetsch, Wolfgang
Publisher: name: IFAC - International Federation of Automatic Control
Year: 2023

description: Learning control systems are expected to have several advantages over conventional approaches when dealing with complex, high-dimensional processes. One example is the task of controlling grasping operations of a multifingered, multijoined robot gripper, which has been designed and implemented at our robotics lab (the Darmstadt-Hand). The Advanced Gripper Control with Learning Algorithms -AGRICOLA- presented in this paper is able to maintain a stable grasp even if disturbances are applied. Also it works for objects of different sizes for which the grasping has not been learned. Compared to the conventional stiffness approach the performance of the learning system is equal but the design is much easier, since less knowledge about the gripper-hardware has to be taken into account. The main part of the learning control loop is an associative memory storing the grasping behaviour as determined by the choice of an objective function.
Inflation in a Gaussian Random Landscape
Creators: name: Low, Lerh Feng
name: Easther, Richard
name: Hotchkiss, Shaun
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Random, multifield functions can set generic expectations for landscape-style cosmologies. We consider the inflationary implications of a landscape defined by a Gaussian random function, which is perhaps the simplest such scenario. Many key properties of this landscape, including the distribution of saddles as a function of height in the potential, depend only on its dimensionality, $N$, and a single parameter, $γ$, which is set by the power spectrum of the random function. We show that for saddles with a single downhill direction the negative mass term grows smaller, relative to the average mass, as $N$ increases, a result with potential implications for the $η$-problem in landscape scenarios. For some power spectra Planck-scale saddles have $η \sim 1$ and eternal, topological inflation would be common in these scenarios. Lower-lying saddles typically have large $η$, but the fraction of these saddles which would support inflation is computable, allowing us to identify which scenarios can deliver a universe that resembles ours. Finally, by drawing inferences about the relative viability of different multiverse proposals we also illustrate ways in which quantitative analyses of multiverse scenarios are feasible.
description: 21 pages, 13 figures; v2 fixed typo in metadata
Portugal ratifica o acordo relativo ao Tribunal Unificado de Patentes
Creators: name: Andrade, António
Publisher: name: Propriedades Intelectuais
Year: 2015

description: O acordo que cria um tribunal europeu que terá competência para dirimir os litígios relativos às patentes europeias e às patentes europeias com efeito unitário.
description: Propriedades Intelectuais, n. 4 (2015)
Radiative corrections to elastic proton-electron scattering measured in coincidence
Creators: name: Gakh, G. I.
name: Konchatnij, M. I.
name: Merenkov, N. P.
name: Tomasi-Gustafsson, Egle
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The differential cross section for elastic scattering of protons on electrons at rest is calculated taking into account the QED radiative corrections to the leptonic part of interaction. These model-independent radiative corrections arise due to emission of the virtual and real soft and hard photons as well as to vacuum polarization. We analyze an experimental setup when both the final particles are recorded in coincidence and their energies are determined within some uncertainties. The kinematics, the cross section, and the radiative corrections are calculated and numerical results are presented.
description: 27 pages, 10 figures. The title of the article has been changed. Improved the quality of figures. An article without an appendix is approved for publication in the Phys.Rev.C
Synchronization of Bloch oscillations by gate voltage modulation
Creators: name: Erdmanis, Janis
name: Nazarov, Yuli
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose to synchronize Bloch oscillations in a double phase-slip junction by modulating the gate voltage rather than the bias voltage. We show this is advantageous and the relatively small a.c. modulation of the gate voltage gives rise to the pronounced plateaux of quantized current of the width of the order of Coulomb blockade threshold. We theoretically investigate the setup distinguishing three regimes of the strong, weak, and intermediate coupling defined by the ratio of the gate capacitance $C$ and the effective capacitance of the phase-slip junctions. An important feature of the intermediate coupling regime is the occurrence of the fractional plateaux of the quantized current. We investigate the finite temperature effects finding an empirical scaling for the smoothing of integer plateaux.
description: For numerical code and supplementary notes, see https://doi.org/10.5281/zenodo.5120790
Phase separation and single-chain compactness of charged disordered proteins are strongly correlated
Creators: name: Lin, Yi-Hsuan
name: Chan, Hue Sun
Publisher: name: arXiv
Year: 2017
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: Liquid-liquid phase separation of intrinsically disordered proteins (IDPs) is a major undergirding factor in the regulated formation of membraneless organelles in the cell. The phase behavior of an IDP is sensitive to its amino acid sequence. Here we apply a recent random-phase-approximation polymer theory to investigate how the tendency for multiple chains of a protein to phase separate, as characterized by the critical temperature $T^*_{\rm cr}$, is related to the protein's single-chain average radius of gyration $\langle R_{\rm g} \rangle$. For a set of sequences containing different permutations of an equal number of positively and negatively charged residues, we found a striking correlation $T^*_{\rm cr}\sim \langle R_{\rm g} \rangle^{-γ}$ with $γ$ as large as $\sim 6.0$, indicating that electrostatic effects have similarly significant impact on promoting single-chain conformational compactness and phase separation. Moreover, $T^*_{\rm cr}\propto -{\rm SCD}$, where SCD is a recently proposed "sequence charge decoration" parameter determined solely by sequence information. Ramifications of our findings for deciphering the sequence dependence of IDP phase separation are discussed.
description: 4 page, 3 figures, accepted for publication in Biophysical Journal as a Letter
Memorando de entendimento entre a APRITEL e as Entidades de Gestão Coletiva de Direitos de Autor e Direitos Conexos, sobre a proteção de direitos de propriedade intelectual na internet
Creators: name: Rosa, Victor Castro
Publisher: name: Propriedades Intelectuais
Year: 2015

description: Sobre o acordo histórico assinado, no passado dia 28 de julho de 2015, no CCB: Memorando de Entendimento, sob a égide da Secretaria de Estado da Cultura, entre a Inspeção-Geral das Atividades Culturais, a Associação dos Operadores de Telecomunicações (APRITEL), as entidades de gestão coletiva de direitos de autor e conexos (AFP, APEL, ASSOFT, AUDIOGEST, GDA, GEDIPE e VISAPRESS) e ainda o MAPINET, a APAN, a APAP, a APAME, a Direção-Geral do Consumidor, a DECO e a sociedade DNS.PT.
description: Propriedades Intelectuais, n. 4 (2015)
The Pristine Dwarf-Galaxy survey -- IV. Probing the outskirts of the dwarf galaxy Boötes I
Creators: name: Longeard, Nicolas
name: Jablonka, Pascale
name: Arentsen, Anke
name: Thomas, Guillaume F.
name: Aguado, David S.
name: Carlberg, Raymond G.
name: Lucchesi, Romain
name: Malhan, Khyati
name: Martin, Nicolas
name: McConnachie, Alan W.
name: Navarro, Julio F.
name: Sánchez-Janssen, Rubén
name: Sestito, Federico
name: Starkenburg, Else
name: Yuan, Zhen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new spectroscopic study of the dwarf galaxy Bootes I (Boo I) with data from the Anglo-Australian Telescope and its AAOmega spectrograph together with the Two Degree Field multi-object system. We observed 36 high-probability Boo I stars selected using Gaia Early Data Release 3 proper motions and photometric metallicities from the Pristine survey. Out of those, 27 are found to be Boo I's stars, resulting in an excellent success rate of 75% at finding new members. Our analysis uses a new pipeline developed to estimate radial velocities and equivalent widths of the calcium triplet lines from Gaussian and Voigt line profile fits. The metallicities of 16 members are derived, including 3 extremely metal-poor stars ([Fe/H] < -3.0), which translates into a success rate of 25% at finding them with the combination of Pristine and Gaia. Using the large spatial extent of our new members that spans up to 4.1 half-light radii and spectroscopy from the literature, we find a systemic velocity gradient of 0.40 +/- 0.10 km/s/arcmin and a small but resolved metallicity gradient of -0.008 +/- 0.003 dex/arcmin. Finally, we show that Boo I is more elongated than previously thought with an ellipticity of epsilon = 0.68 +/- 0.15. Its velocity and metallicity gradients as well as its elongation suggest that Boo I may have been affected by tides, a result supported by direct dynamical modelling.
Novas leis de direito de autor - a alteração à lei da cópia privada: uma (má) ideia cujo tempo não chegou
Creators: name: Rendas, Tito
Publisher: name: Propriedades Intelectuais
Year: 2015

description: O debate sobre o direito de autor é polarizado, sim, mas desenrola-se sobretudo fora dos círculos mediáticos. Foi, assim, para surpresa daqueles que se dedicam ao seu estudo que o direito de autor se viu recentemente catapultado para a ribalta, à conta do tema da compensação equitativa devida em contrapartida da reprodução de obras protegidas para uso privado.
description: Propriedades Intelectuais, n. 4 (2015)
Model-Based Perfusion Reconstruction with Time Separation Technique in Cone-Beam CT Dynamic Liver Perfusion Imaging
Creators: name: Haseljić, Hana
name: Frysch, Robert
name: Kulvait, Vojtěch
name: Werncke, Thomas
name: Brusch, Inga
name: Speck, Oliver
name: Schulz, Jessica
name: Manhart, Michael
name: Rose, Georg
Publisher: name: arXiv
Year: 2024
Subjects: subject: Medical Physics (physics.med-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The success of embolisation, a minimally invasive treatment of liver cancer, could be evaluated in the operational room with cone-beam CT by acquiring a dynamic perfusion scan. The reconstruction algorithm must address the issues of low temporal sampling and higher noise levels inherent in cone-beam CT systems, compared to conventional CT. Therefore, a model-based perfusion reconstruction based on the time separation technique (TST) was applied. TST uses basis functions to model time attenuation curves. These functions are either analytical or based on prior knowledge, extracted using singular value decomposition from CT perfusion data. To explore how well the prior knowledge can model perfusion dynamics and what the potential limitations are, the dynamic CBCT perfusion scan was simulated under different noise levels. The TST method was compared to static reconstruction. It was demonstrated that a set consisting of only four basis functions results in perfusion maps that preserve relevant information, denoises the data, and outperforms static reconstruction under higher noise levels. TST with prior knowledge would not only outperform static reconstruction, but also the TST with analytical basis functions. Furthermore, it has been shown that only eight CBCT rotations, unlike previously assumed ten, are sufficient to obtain the perfusion maps comparable to the reference CT perfusion maps. This contributes to saving dose and reconstruction time. The real dynamic CBCT perfusion scan, reconstructed under the same conditions as the simulated scan, shows potential for maintaining the accuracy of the perfusion maps. By visual inspection, the embolised region was matching to that in corresponding CT perfusion maps. Further analysis of a larger cohort of patient data is needed to draw final conclusions regarding the expected advantages of the time separation technique.
description: Medical Physics Received: 2 August 2024 Revised: 20 November 2024 Accepted: 27 December 2024
A Baer-Krull theorem for quasi-ordered groups
Creators: name: Kuhlmann, Salma
name: Lehéricy, Gabriel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Commutative Algebra (math.AC)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We give group analogs of two important theorems of real algebra concerning convex valuations, one of which is the Baer-Krull theorem. We do this by using quasi-orders, which gives a uniform approach to valued and ordered groups. We also recover the classical Baer-Krull theorem from its group analog.
Asymmetric parametric generation of images with nonlinear dielectric metasurfaces
Creators: name: Kruk, Sergey
name: Wang, Lei
name: Sain, Basudeb
name: Dong, Zhaogang
name: Yang, Joel
name: Zentgraf, Thomas
name: Kivshar, Yuri
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Subwavelength dielectric resonators assembled into metasurfaces have become a versatile tool for miniaturising optical components approaching the nanoscale. An important class of metasurface functionalities is associated with asymmetry in both generation and transmission of light with respect to reversals of the positions of emitters and receivers. Nonlinear light-matter interaction in metasurfaces offers a promising pathway towards miniaturisation of the asymmetric control of light. Here we demonstrate asymmetric parametric generation of light in nonlinear metasurfaces. We assemble dissimilar nonlinear dielectric resonators into translucent metasurfaces that produce images in the visible spectral range being illuminated by infrared radiation. By design, the metasurfaces produce different and completely independent images for the reversed direction of illumination, that is when the positions of the infrared emitter and the visible light receiver are exchanged. Nonlinearity-enabled asymmetric control of light by subwavelength resonators paves the way towards novel nanophotonic components via dense integration of large quantities of nonlinear resonators into compact metasurface designs.
description: Nat. Photon. (2022)
Novas leis de direito de autor - introdução geral e lei das entidades de gestão coletiva
Creators: name: Carretas, Miguel Lourenço
Publisher: name: Propriedades Intelectuais
Year: 2015

description: Transcrição da intervenção oral apresentada no ciclo de conferências O Direito em Perspetiva, As Novas Leis de Direito de Autor, organizado pela PLMJ e pelo Dr. Manuel Lopes Rocha, que teve lugar no dia 30 de março do ano de 2015. O texto reflete o tom coloquial próprio de uma apresentação desse tipo.
description: Propriedades Intelectuais, n. 4 (2015)
Classification of $3 \operatorname{mod} 5$ arcs in $\operatorname{PG}(3,5)$
Creators: name: Kurz, Sascha
name: Landjev, Ivan
name: Rousseva, Assia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: Primary: 51E22, Secondary: 51E21, 94B05

description: The proof of the non-existence of Griesmer $[104, 4, 82]_5$-codes is just one of many examples where extendability results are used. In a series of papers Landjev and Rousseva have introduced the concept of $(t\operatorname{mod} q)$-arcs as a general framework for extendability results for codes and arcs. Here we complete the known partial classification of $(3 \operatorname{mod} 5)$-arcs in $\operatorname{PG}(3,5)$ and uncover two missing, rather exceptional, examples disproving a conjecture of Landjev and Rousseva. As also the original non-existence proof of Griesmer $[104, 4, 82]_5$-codes is affected, we present an extended proof to fill this gap.
description: 33 pages, 15 tables; typos corrected
DeepCattleCounts - Pre-trained weights
Creators: name: Hodel, Leonie
Publisher: name: Zenodo
Year: 2024

description: This record includes pre-trained weights for the DeepCattleCount model, which estimates cattle density in congested scenes. The code for this model and additional information about the related research paper can be found herehttps://github.com/leoniehodel/deepCattleCount/
Towards NNLO+PS Matching with Sector Showers
Creators: name: Campbell, John M
name: Höche, Stefan
name: Li, Hai Tao
name: Preuss, Christian T
name: Skands, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We outline a new technique for the fully-differential matching of final-state parton showers to NNLO calculations, focussing here on the simplest case of leptonic collisions with two final-state jets. The strategy is facilitated by working in the antenna formalism, making use of NNLO antenna subtraction on the fixed-order side and the sector-antenna framework on the shower side. As long as the combined real-virtual and double-real corrections do not overcompensate the real-emission term in the three-jet region, negative weights can be eliminated from the matching scheme. We describe the implementation of all necessary components in the VINCIA antenna shower in PYTHIA 8.3.
description: Version submitted to PLB
Effects of coupled channels on $c\bar{b}$ mass and decays in NRQM with OGEP
Creators: name: Bhat, Manjunath
name: Monteiro, Antony Prakash
name: Kumar, K. B. Vijaya
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The complete spectrum of $c\bar{b}$ states is obtained in a phenomenological non relativistic quark model(NRQM), which consists of a confinement potential and one gluon exchange potential (OGEP) as effective quark - antiquark potential with coupled channel effects. We make predictions for the radiative decay (E1 and M1) widths and weak decay widths of $c\bar{b}$ states in the framework of NRQM formalism.
description: 13 pages
Novas leis de direito de autor - obras órfãs
Creators: name: Mendes, Manuel Oehen
Publisher: name: Propriedades Intelectuais
Year: 2015

description: Transcrição da intervenção oral apresentada no ciclo de conferências O Direito em Perspetiva, As Novas Leis de Direito de Autor, organizado pela PLMJ e o Dr. Manuel Lopes Rocha, que teve lugar no dia 30 de março do ano de 2015.
description: Propriedades Intelectuais, n. 4 (2015)
Spectral Efficiency Analysis of Cell-free Distributed Massive MIMO Systems with Imperfect Covariance Matrix
Creators: name: Ye, Feng
name: Li, Jiamin
name: Zhu, Pengcheng
name: Wang, Dongming
name: You, Xiaohu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, the impacts of imperfect channel covariance matrix on the spectral efficiency (SE) of cell-free distributed massive multiple-input multiple-output (MIMO) systems are analyzed. We propose to estimate the channel covariance matrix by alternately using the assigned pilots and their phase-shifted pilots in different coherent blocks, which improves the accuracy of channel estimation with imperfect covariance matrix and reduces pilot overhead. Under this scheme, the closed-form expressions of SE with maximum ratio combination (MRC) and zero-forcing (ZF) receivers are derived, which enables us to select key parameters for better system performance. Simulation results verify the effectiveness of the proposed channel estimation method and the accuracy of the derived closed-form expressions. When more coherent blocks are used to estimate the covariance matrix, we can get better system performance. Moreover, some insightful conclusions are arrived at from the SE comparisons between different receiving schemes (ZF and MRC) and different pilot allocation schemes (orthogonal pilot and pilot reuse).