cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Implementing the environmental dimension of the EU’s Urban Agenda 2014-2020
Creators: name: Vinci, Ignazio
name: Cutaia, Fabio
Publisher: name: TeMA - Journal of Land Use, Mobility and Environment
Year: 2019

description: This work illustrates the planning experience carried out by five municipalities of Western Sicily (Italy) in the the framework of the EU’s urban agenda 2014-2020. The planning process has led to the definition of a Strategy for Sustainable Urban Development (SSUD), whose general objectives are strengthening territorial cohesion and increasing accessibility to local resources. The SSUD action plan, being funded with around 70 millions euro, gives specific importance to sustainable mobility as a mean through which such objectives can be better achieved and reciprocally integrated. After a brief description of the territory targeted by the SSUD (section 1), the paper focuses on the greenway concept within the broader debate on sustainable mobility. In section 3, a series of evidences are provided to identify the demand and potential for the development of sustainable mobility infrastructures in the five cities. In the fourth section, after describing the expceted results of the action plan in the field of sustainable transport, it is argued why in such specific territory a greenway is the best solution to increase accessibility to a broad range of resources and functions (natural sites, landscapes, cultural heritage, urban functions).
description: TeMA - Journal of Land Use, Mobility and Environment, Vol 12 No 2 (2019): The Times They Are a-Changin'
Room Temperature InP DFB Laser Array Directly Grown on (001) Silicon
Creators: name: Wang, Zhechao
name: Tian, Bin
name: Pantouvaki, Marianna
name: Guo, Weiming
name: Absil, Philippe
name: Van Campenhout, Joris
name: Merckling, Clement
name: Van Thourhout, Dries
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Fully exploiting the silicon photonics platform requires a fundamentally new approach to realize high-performance laser sources that can be integrated directly using wafer-scale fabrication methods. Direct band gap III-V semiconductors allow efficient light generation but the large mismatch in lattice constant, thermal expansion and crystal polarity makes their epitaxial growth directly on silicon extremely complex. Here, using a selective area growth technique in confined regions, we surpass this fundamental limit and demonstrate an optically pumped InP-based distributed feedback (DFB) laser array grown on (001)-Silicon operating at room temperature and suitable for wavelength-division-multiplexing applications. The novel epitaxial technology suppresses threading dislocations and anti-phase boundaries to a less than 20nm thick layer not affecting the device performance. Using an in-plane laser cavity defined by standard top-down lithographic patterning together with a high yield and high uniformity provides scalability and a straightforward path towards cost-effective co-integration with photonic circuits and III-V FINFET logic.
Central extensions of mapping class groups from characteristic classes
Creators: name: Fiorenza, Domenico
name: Schreiber, Urs
name: Valentino, Alessandro
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Topology (math.AT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 57R50, 57R56

description: We characterize, for every higher smooth stack equipped with "tangential structure", the induced higher group extension of the geometric realization of its higher automorphism stack. We show that when restricted to smooth manifolds equipped with higher degree topological structures, this produces higher extensions of homotopy types of diffeomorphism groups. Passing to the groups of connected components, we obtain abelian extensions of mapping class groups and we derive sufficient conditions for these being central. We show as a special case that this provides an elegant re-construction of Segal's approach to $\mathbb{Z}$-extensions of mapping class groups of surfaces that provides the anomaly cancellation of the modular functor in Chern-Simons theory. Our construction generalizes Segal's approach to higher central extensions of mapping class groups of higher dimensional manifolds with higher tangential structures, expected to provide the analogous anomaly cancellation for higher dimensional TQFTs.
description: 19 pages, v2 has added clarification to sections 1 and 2.1.1
Additional file 1 of Metabolic-GWAS provides insights into genetic architecture of seed metabolome in buckwheat
Creators: name: Zargar, Sajad Majeed
name: Manzoor, Madhiya
name: Bhat, Basharat
name: Wani, Amir Bashir
name: Sofi, Parvaze Ahmad
name: Sudan, Jebi
name: Ebinezer, Leonard Barnabas
name: Dall’Acqua, Stefano
name: Peron, Gregorio
name: Masi, Antonio
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table ST1. Qualitative results obtained from the HPLC–DAD-MS analysis of Buckwheat samples. Table ST2. Summary of number of effects by type and region. Table ST 3. List of buckwheat genotypes isolated from India and used in present study.
Analysing the Predictivity of Features to Characterise the Search Space
Creators: name: Durgut, Rafet
name: Aydin, Mehmet Emin
name: Ihshaish, Hisham
name: Rakib, Abdur
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Exploring search spaces is one of the most unpredictable challenges that has attracted the interest of researchers for decades. One way to handle unpredictability is to characterise the search spaces and take actions accordingly. A well-characterised search space can assist in mapping the problem states to a set of operators for generating new problem states. In this paper, a landscape analysis-based set of features has been analysed using the most renown machine learning approaches to determine the optimal feature set. However, in order to deal with problem complexity and induce commonality for transferring experience across domains, the selection of the most representative features remains crucial. The proposed approach analyses the predictivity of a set of features in order to determine the best categorization.
description: Artificial Neural Networks and Machine Learning, ICANN 2022, 31st International Conference on Artificial Neural Networks, Bristol, UK, September, 2022, Proceedings; Part IV (1 13)
Walkability and Urban Design in a Post-Earthquake City
Creators: name: Di Ludovico, Donato
name: Rizzi, Paola
Publisher: name: TeMA - Journal of Land Use, Mobility and Environment
Year: 2019

description: The research described in this article concerns the issue of accessibility with a focus on the walkability in a city that is under reconstruction, such as the city of L'Aquila struck by a destructive earthquake in 2009. The reconstruction is determining a new urban layout in which there is a chaotic overlap of flows of the movements of vehicles and people, quite exceptional with respect to the configuration of an ordinary city. For example, the flows of heavy vehicles and work machines, linked to building reconstruction, and which also generate strong noise pollution and therefore a new soundscape, increase considerably. It is a city in which the return to the residences mixes with large building sites, in which urban transformations are very fast and must be governed through appropriate urban design instruments. The main aim of this research is to define a strategy to realize a method able to calculate at the same time an overlapping indexes in order to classify streets according to how friendly they are for the pedestrian and bike. This theme is approached to a methodological level and is related to the interacting theme of urban design and new centralities. The tool used for this integration is the Strategic Urban Project, which the research experience has found to be more effective and with greater performance than the more traditional Land Use Planning. The design approach and methodology is to integrate urban design techniques with spatial planning techniques, in order to obtain a higher performance of pedestrian networks.
description: TeMA - Journal of Land Use, Mobility and Environment, Vol 12 No 2 (2019): The Times They Are a-Changin'
The pulsation modes, masses and evolution of luminous red giants
Creators: name: Wood, P. R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The period-luminosity sequences and the multiple periods of luminous red giant stars are examined using the OGLE III catalogue of long-period variables in the Large Magellanic Cloud. It is shown that the period ratios in individual multimode stars are systematically different from the ratios of the periods at a given luminosity of different period-luminosity sequences. This leads to the conclusion that the masses of stars at the same luminosity on the different period-luminosity sequences are different. An evolutionary scenario is used to show that the masses of stars on adjacent sequences differ by about 16-26% at a given luminosity, with the shorter period sequence being more massive. The mass is also shown to vary across each sequence by a similar percentage, with the mass increasing to shorter periods. On one sequence, sequence B, the mass distribution is shown to be bimodal. It is shown that the small amplitude variables on sequences A', A and B pulsate in radial and nonradial modes of angular degree l=0, 1 and 2, with the l=1 mode being the most common. The stars on sequences C' and C are predominantly radial pulsators (l=0). Matching period ratios to pulsation models shows that the radial pulsation modes associated with sequences A', A, B, C' and C are the 4th, 3rd, 2nd and 1st overtones and the fundamental mode, respectively.
description: 16 pages, 10 figures, 1 table
Additional file 1 of Physiological responses and Ethylene-Response AP2/ERF Factor expression in Indica rice seedlings subjected to submergence and osmotic stress
Creators: name: Chi, Hsin-Yu
name: Ou, Shang-Ling
name: Wang, Mao-Chang
name: Yang, Chin-Ying
Publisher: name: figshare
Year: 2023
Subjects: subject: Cell Biology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Mental Health
subject: Plant Biology
subject: FOS: Biological sciences

description: Additional file 1. Primers used for quantitative RT-PCR experiments.
Dynamical Generation of a Repulsive Vector Contribution to the Quark Pressure
Creators: name: Restrepo, Tulio E.
name: Macias, Juan Camilo
name: Pinto, Marcus Benghi
name: Ferrari, Gabriel N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Lattice QCD results for the coefficient $c_2$ appearing in the Taylor expansion of the pressure show that this quantity raises with the temperature towards the Stefan-Boltzmann limit. On the other hand, model approximations predict that when a vector repulsion, parametrized by $G_V$, is present this coefficient reaches a maximum just after $T_c$ and then deviates from the lattice predictions. Recently, this discrepancy has been used as a guide to constrain the (presently unknown) value of $G_V$ within the framework of effective models at large-$N_c$ (LN). In the present investigation we show that, due to finite $N_c$ effects, $c_2$ may also develop a maximum even when $G_V=0$ since a vector repulsive term can be dynamically generated by exchange type of radiative corrections. Here we apply the the Optimized Perturbation Theory (OPT) method to the two flavor Polyakov--Nambu--Jona-Lasinio model (at $G_V=0$) and compare the results with those furnished by lattice simulations an by the LN approximation at $G_V=0$ and also at $G_V \ne 0$. The OPT numerical results for $c_2$ are impressively accurate for $T \lesssim 1.2\, T_c$ but, as expected, predict that this quantity develops a maximum at high-$T$. After identifying the mathematical origin of this extremum we argue that such a discrepant behavior may naturally arise within these effective quark models (at $G_V=0$) whenever the first $1/N_c$ corrections are taken into account. We then interpret this hypothesis as an indication that beyond the large-$N_c$ limit the correct high temperature (perturbative) behavior of $c_2$ will be faithfully described by effective models only if they also mimic the asymptotic freedom phenomenon.
description: 18 pages, 13 figures
The Prominent Values of the Mustapha Pacha Hospital of Algiers at Different Scales
Creators: name: Ghida, Nassila
name: Boussora, Kenza
name: Atzeni, Carlo
Publisher: name: TeMA - Journal of Land Use, Mobility and Environment
Year: 2019

description: Mustapha Pacha healthcare facility is one of the most important structure of the sanitary history in Africa. Its stratification goes back to the 19th century. Both of its location in the urban heart of the capital of Algeria and its architectural composition are strategic characteristics of its longevity. But in 2015, some political will pointed out the necessity to demolished the entire hospital. A Utopia due to the complexity of the structure and to economic issues. The study aims to reveal the different heritage scale values of the hospital which characterize it as a preserved and as a functional hospital. Those values are part of the urbanity of the city, its architectural criteria and the medical history. Multi-scalar values are the urban value, the architectural value, the collective value, the scientific value, and the value of belonging. The results aim first to point out the importance of Mustapha Pacha healthcare facility as a building heritage due to its contribution to architectural, human, medical, surgical and technical development. Secondly, it exposes healthcare facilities possibility to be valorized and protected as a built heritage. It also has direct practical implications such as to be an academic base for future researches aiming to understand 20th century healthcare facilities organization and values in general and the Mustapha Pacha hospital as a specific architectural object. The regrouped information is also a deep data collection never done before in order to understand the hospital and can promote heritage’ file submission proposition
description: TeMA - Journal of Land Use, Mobility and Environment, Vol 12 No 2 (2019): The Times They Are a-Changin'
Ultraviolet energy dependence of particle production sources in relativistic heavy-ion collisions
Creators: name: Wolschin, Georg
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The energy dependence of particle production sources in relativistic heavy-ion collisions is investigated from RHIC to LHC energies. Whereas charged-hadron production in the fragmentation sources follows a ln(s_NN/s_0) law, particle production in the mid-rapidity gluon-gluon source exhibits a much stronger dependence proportional to ln^3(s_NN/s_0), and becomes dominant between RHIC and LHC energies. The production of particles with pseudorapidities beyond the beam rapidity is also discussed.
description: 6 pages, 5 figures
Alcock-Paczynski Test with Model-independent BAO Data
Creators: name: Melia, Fulvio
name: Lopez-Corredoira, Martin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Cosmological tests based on the statistical analysis of galaxy distributions usually depend on source evolution. An exception is the Alcock-Paczynski (AP) test, which is based on the changing ratio of angular to spatial/redshift size of (presumed) spherically-symmetric source distributions with distance. Intrinsic redshift distortions due to gravitational effects may also have an influence, but they can now be overcome with the inclusion of a sharp feature, such as the Baryonic Acoustic Oscillation (BAO) peak. Redshift distortions affect the amplitude of the peak, but impact its position only negligibly. As we shall show here, the use of this diagnostic, with new BAO peaks from SDSS-III/BOSS at average redshifts =0.38, 0.61 and 2.34, disfavors the current concordance (LCDM) model at 2.3 sigma. Within the context of expanding Friedmann-Robertson-Walker (FRW) cosmologies, these data instead favor the zero active mass equation-of-state, rho+3p=0, where rho and p are, respectively, the total density and pressure of the cosmic fluid, the basis for the R_h=ct universe.
description: 11 pages, 2 figures, 1 table. Accepted for publication in the International Journal of Modern Physics D
A Stakeholder-Centered View on Fairness in Music Recommender Systems
Creators: name: Dinnissen, Karlijn
name: Bauer, Christine
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Our narrative literature review acknowledges that, although there is an increasing interest in recommender system fairness in general, the music domain has received relatively little attention in this regard. However, addressing fairness of music recommender systems (MRSs) is highly important because the performance of these systems considerably impacts both the users of music streaming platforms and the artists providing music to those platforms. The distinct needs that these stakeholder groups may have, and the different aspects of fairness that therefore should be considered, make for a challenging research field with ample opportunities for improvement. The review first outlines current literature on MRS fairness from the perspective of each stakeholder and the stakeholders combined, and then identifies promising directions for future research. The two open questions arising from the review are as follows: (i) In the MRS field, only limited data is publicly available to conduct fairness research; most datasets either originate from the same source or are proprietary (and, thus, not widely accessible). How can we address this limited data availability? (ii) Overall, the review shows that the large majority of works analyze the current situation of MRS fairness, whereas only few works propose approaches to improve it. How can we move forward to a focus on improving fairness aspects in these recommender systems? At FAccTRec '22, we emphasize the specifics of addressing RS fairness in the music domain.
description: Abstract for FAcctRec 2022 at RecSys 2022, 1 table, main article published in Frontiers in Big Data
A survey of the ESR model for an objective reinterpretation of quantum mechanics
Creators: name: Garola, Claudio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Most scholars concerned with the foundations of quantum mechanics (QM) think that contextuality and nonlocality (hence nonobjectivity of physical properties) are unavoidable features of QM which follow from the mathematical apparatus of QM. Moreover these features are usually considered as basic in quantum information processing. Nevertheless they raise still unsolved problems, as the objectification problem in the quantum theory of measurement. The extended semantic realism (ESR) model offers a possible way out from these difficulties by embedding the mathematical formalism of QM into a broader mathematical formalism and reinterpreting quantum probabilities as conditional on detection rather than absolute. The embedding allows to recover the formal apparatus of QM within the ESR model, and the reinterpretation of QM allows to construct a noncontextual hidden variables theory which justifies the assumptions introduced in the ESR model and proves its objectivity. According to the ESR model both linear and nonlinear time evolution occur, depending on the physical environment, as in QM. In addition, the ESR model, though objective, implies modified Bell's inequalities that do not conflict with QM, supplies different mathematical representations of proper and improper mixtures, provides a general framework in which the local interpretations of the GHZ experiment obtained by other authors are recovered and explained, and supports an interpretation of quantum logic which avoids the introduction of the problematic notion of quantum truth.
description: 12 pages
Non-cosmological, Non-Doppler Relativistic Frequency Shift over Astronomical Distances
Creators: name: D'Abramo, Germano
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We investigate in detail an apparently unnoticed consequence of special relativity. It consists in time dilation/contraction and frequency shift for emitted light affecting accelerated reference frames at astronomical distances from an inertial observer. The frequency shift is non-cosmological and non-Doppler in nature. We derive the main formulae and compare their predictions with the astronomical data available for Proxima Centauri. We found no correspondence with observations. Since the implications of the new time dilation/contraction and frequency shift are blatantly paradoxical, we do not expect to find one. By all indications, we are dealing with a genuine, and not a merely apparent, relativity paradox.
description: 12 pages, 1 figure, published version
Sport and the city, between urban regeneration and sustainable development
Creators: name: Ladu, Mara
name: Balletto, Ginevra
name: Borruso, Giuseppe
Publisher: name: TeMA - Journal of Land Use, Mobility and Environment
Year: 2019

description: Sport has always played a prominent role in civil society. Although it has been conceived as a strategic political means throughout history, nowadays sport is considered a positive force in achieving sustainable development. The international documents recognize the contributions it makes to health, education and social inclusion objectives. Anyway, the analysis concerning the relationship between sport and the city should consider both social and physical aspects because people are progressively understanding the city as an ideal palimpsest for sports activities. In this regard, the new phenomenon called "street sport" represents a real challenge for urban governance and planning. The present study focuses on policies and urban design projects adopted by Cagliari City Council to make Cagliari a great Sports City. Cagliari has unique environmental, geographical and climatic features which allow to promote sport activities throughout the year. Moreover, in the recent years the City has realized significant interventions, both on a local and on a regional scale, as the operation - on going - of refurbishment and reconstruction of the new Stadium. Within this favourable condition, the authors examine the community perception on benefits that sport provides for human well-being and for city development through the administration of a specific questionnaire. The outcome of this survey highlights to what extent citizens recognize Cagliari as a Sports City and gives interesting suggestions for the definition of shared policies and actions able to assume sport as a lever of sustainable development in the future.
description: TeMA - Journal of Land Use, Mobility and Environment, Vol 12 No 2 (2019): The Times They Are a-Changin'
Additional file 2 of 'It’s not going to be a one size fits all': a qualitative exploration of the potential utility of three drug checking service models in Scotland
Creators: name: Carver, Hannah
name: Falzon, Danilo
name: Masterton, Wendy
name: Wallace, Bruce
name: Aston, Elizabeth V.
name: Measham, Fiona
name: Hunter, Carole
name: Sumnall, Harry
name: Gittins, Rosalind
name: Raeburn, Fiona
name: Craik, Vicki
name: Priyadarshi, Saket
name: Rothney, Laura
name: Weir, Kira
name: Parkes, Tessa
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Mental Health

description: Additional file 2. Vignettes
Generalized parton distributions of the proton from lattice QCD
Creators: name: Scapellato, Aurora
name: Alexandrou, Constantia
name: Cichy, Krzysztof
name: Constantinou, Martha
name: Hadjiyiannakou, Kyriakos
name: Jansen, Karl
name: Steffens, Fernanda
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022
Subjects: p: generalized parton distribution
parton: distribution function
generalized parton distribution: transversity
hadron: structure
fermion: mass: twist
pi: mass
generalized parton distribution: isovector
lattice field theory
lattice
helicity
statistical

description: Generalized parton distributions (GPDs) are among the most fundamental quantities for describing the internal structure of hadrons. In this work, we present results on isovector GPDs of the proton obtained within lattice Quantum Chromodynamics. We use the quasi-distribution formalism and perform the calculations on an ensemble of $N_f = 2 + 1 + 1$ twisted mass fermions, with pion mass $M_\pi=260$ MeV and lattice spacing $a\simeq 0.093$ fm. Results are presented for unpolarized, helicity, and transversity GPDs at zero and nonzero skewness with controlled statistical uncertainties. Comparisons with their forward limit show qualitative features anticipated from model calculations.
Simulating gauge theories with variational quantum eigensolvers in superconducting microwave cavities
Creators: name: Zhang, Jinglei
name: Ferguson, Ryan
name: Kühn, Stefan
name: Haase, Jan F.
name: Wilson, C. M.
name: Jansen, Karl
name: Muschik, Christine A.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022
Subjects: cavity: microwaves
superconductivity
hardware
Hilbert space
gauge field theory
qubit
variational
Monte Carlo
photon
topological
U(1)
Higgs model

description: Quantum-enhanced computing methods are promising candidates to solve currently intractable problems. We consider here a variational quantum eigensolver (VQE), that delegates costly state preparations and measurements to quantum hardware, while classical optimization techniques guide the quantum hardware to create a desired target state. In this work, we propose a bosonic VQE using superconducting microwave cavities, overcoming the typical restriction of a small Hilbert space when the VQE is qubit based. The considered platform allows for strong nonlinearities between photon modes, which are highly customisable and can be tuned in situ, i.e. during running experiments. Our proposal hence allows for the realization of a wide range of bosonic ansatz states, and is therefore especially useful when simulating models involving degrees of freedom that cannot be simply mapped to qubits, such as gauge theories, that include components which require infinite-dimensional Hilbert spaces. We thus propose to experimentally apply this bosonic VQE to the U(1) Higgs model including a topological term, which in general introduces a sign problem in the model, making it intractable with conventional Monte Carlo methods.
User recommendation system based on MIND dataset
Creators: name: Abdulhussein, Niran A.
name: Obaid, Ahmed J
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: D.4.3

description: Nowadays, it's a very significant way for researchers and other individuals to achieve their interests because it provides short solutions to satisfy their demands. Because there are so many pieces of information on the internet, news recommendation systems allow us to filter content and deliver it to the user in proportion to his desires and interests. RSs have three techniques: content-based filtering, collaborative filtering, and hybrid filtering. We will use the MIND dataset with our system, which was collected in 2019, the big challenge in this dataset because there is a lot of ambiguity and complex text processing. In this paper, will present our proposed recommendation system. The core of our system we have used the GloVe algorithm for word embeddings and representation. Besides, the Multi-head Attention Layer calculates the attention of words, to generate a list of recommended news. Finally, we achieve good results more than some other related works in AUC 71.211, MRR 35.72, nDCG@5 38.05, and nDCG@10 44.45.
Construction of type II blow-up solutions for the energy-critical wave equation in dimension 5
Creators: name: Jendrej, Jacek
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the semilinear wave equation with focusing energy-critical nonlinearity in space dimension 5 with radial data. It is known that a solution $(u, \partial_t u)$ which blows up at $t = 0$ in a neighborhood (in the energy norm) of the family of solitons $W_λ$, asymptotically decomposes in the energy space as a sum of a bubble $W_λ$ and an asymptotic profile $(u_0^*, u_1^*)$, where $\lim_{t\to 0}λ(t)/t = 0$ and $(u^*_0, u^*_1) \in \dot H^1\times L^2$. We construct a blow-up solution of this type such that $(u^*_0, u^*_1)$ is any pair of sufficiently regular functions with $u_0^*(0) > 0$. For these solutions the concentration rate is $λ(t) \sim t^4$. We also provide examples of solutions with concentration rate $λ(t) \sim t^{ν+ 1}$ for $ν> 8$, related to the behaviour of the asymptotic profile near the origin.
description: 39 pages; the new version takes into account the remarks of the referees
Evaluation of cross section of elastic scattering for non-relativistic and relativistic particles by means of fundamental scattering formulas
Creators: name: Wang, Huai-Yu
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In evaluating differential cross section of elastic scattering, different theories were applied to low-momentum and relativistic particles. For low-momentum motion, Lippmann-Schwinger scattering equation was applied, called fundamental formula; while for relativistic particles, a general scattering theory was used which calculates S matrix. In this paper, Lippmann-Schwinger equation is applied uniformly to both low-momentum and relativistic particles. The cross sections are valuated to the first order of Born approximation. One-body time-independent Green's functions for relativistic free particles are given. Compared to the general scattering theory, the fundamental theory has a clearer physical picture and the approximations made are more explicit.
description: 28 pages, 2 figures, 4 tables
Weyl semimetal from spontaneous inversion symmetry breaking in pyrochlore oxides
Creators: name: Bzdušek, Tomáš
name: Rüegg, Andreas
name: Sigrist, Manfred
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the electronic properties of strongly spin-orbit coupled electrons on the elastic pyrochlore lattice. Akin to the Peierls transition in one-dimensional systems, the coupling of the lattice to the electronic degrees of freedom can stabilize a spontaneous deformation of the crystal. This deformation corresponds to a breathing mode, which breaks the inversion symmetry. We find that for intermediate values of the staggered strain, the inversion-symmetry broken phase realizes a topological Weyl semimetal. In the temperature-elasticity phase diagram, the Weyl semimetal shows a reentrant phase behavior: it can be reached from a symmetric phase realized both at higher and at lower temperatures. The symmetric phase is a Dirac semimetal, which is protected by the non-symmorphic space group of the pyrochlore lattice. Beyond a critical value of the staggered strain, the symmetry-broken phase is a fully gapped trivial insulator. The surface states of the Weyl semimetal form open Fermi arcs and we observe that their connectivity depends on the termination of the crystal. In particular, for the $\{111\}$ films, the semiclassical closed electronic orbits of the surface states in a magnetic field cross the bulk either twice, four, six or twelve times. We demonstrate how one can tune the number of bulk crossings through a Lifshitz-like transition of the Fermi arcs, which we call Weyl-Lifshitz transition, by applying a surface potential. Our results offer a route to a topological Weyl semimetal in nonmagnetic materials and might be relevant for pyrochlore oxides with heavy transition-metal ions such as alloys of iridates.
description: 18 pages, 11 figures
Role of $Λ(1670)$ in the $γp \to K^+ ηΛ$ reaction near threshold
Creators: name: Xiao, Li-Ye
name: Lü, Qi-Fang
name: Xie, Ju-Jun
name: Zhong, Xian-Hui
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The role of the $Λ(1670)$ resonance in the $γp \to K^+ ηΛ$ reaction near threshold is studied within an effective Lagrangian approach. We perform a calculation for the total and differential cross section of the $γp \to K^+ ηΛ$ reaction by including the contributions from the $Λ(1670)$ intermediate state decaying into $ηΛ$ dominated by $K^-$ and $K^{*-}$ mesons exchanges, the nucleon pole and $N^*(1535)$ resonance decaying into $K^+ Λ$ dominated by exchanges of $ω$ and $K^-$ mesons. Besides, the non-resonance process and contact terms to keep the total scattering amplitude gauge invariant are also considered. With our model parameters, the total cross section of this reaction is of the order of $1$ nanobarn at photon beam energy $E_γ \sim 2.5$ GeV. It is expected that our model predictions could be tested by future experiments.
description: Published version
Benchmarking in Manipulation Research: The YCB Object and Model Set and Benchmarking Protocols
Creators: name: Calli, Berk
name: Walsman, Aaron
name: Singh, Arjun
name: Srinivasa, Siddhartha
name: Abbeel, Pieter
name: Dollar, Aaron M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper we present the Yale-CMU-Berkeley (YCB) Object and Model set, intended to be used to facilitate benchmarking in robotic manipulation, prosthetic design and rehabilitation research. The objects in the set are designed to cover a wide range of aspects of the manipulation problem; it includes objects of daily life with different shapes, sizes, textures, weight and rigidity, as well as some widely used manipulation tests. The associated database provides high-resolution RGBD scans, physical properties, and geometric models of the objects for easy incorporation into manipulation and planning software platforms. In addition to describing the objects and models in the set along with how they were chosen and derived, we provide a framework and a number of example task protocols, laying out how the set can be used to quantitatively evaluate a range of manipulation approaches including planning, learning, mechanical design, control, and many others. A comprehensive literature survey on existing benchmarks and object datasets is also presented and their scope and limitations are discussed. The set will be freely distributed to research groups worldwide at a series of tutorials at robotics conferences, and will be otherwise available at a reasonable purchase cost. It is our hope that the ready availability of this set along with the ground laid in terms of protocol templates will enable the community of manipulation researchers to more easily compare approaches as well as continually evolve benchmarking tests as the field matures.
description: Submitted to Robotics and Automation Magazine (RAM) Special Issue on Replicable and Measurable Robotics Research. 35 Pages
Theoretical prediction of antiferromagnetism in layered perovskite Sr$_2$TcO$_4$
Creators: name: Horvat, Alen
name: Pourovskii, Leonid
name: Aichhorn, Markus
name: Mravlje, Jernej
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We theoretically investigate magnetic properties of Sr$_2$TcO$_4$, a 4d transition-metal layered perovskite of the K$_2$NiF$_4$-type with half-filled t$_{2g}$ states. The effect of local Coulomb repulsion between the t$_{2g}$ orbitals is included within the density-functional theory (DFT)+U and DFT+dynamical mean-field theory (DMFT) methods. The DFT+DMFT predicts paramagnetic Sr$_2$TcO$_4$ to be close to the Mott insulator-to-metal transition, similarly to the cubic compound SrTcO$_3$. The inter-site exchange interactions computed within the DFT+DMFT framework point to a strong antiferromagnetic coupling between the neighboring Tc sites within the layer. We then evaluate the Néel temperature $T_N$ within a classical Monte Carlo approach including dipolar interactions, which stabilize the magnetic order in the frustrated K$_2$NiF$_4$ lattice structure. Our approach is applied to a set of layered and cubic perovskites. The obtained $T_N$ are in fair agreement with experiment. Within the same approach we predict $T_N$ of Sr$_2$TcO$_4$ to be in the 500-600K range.
description: 8 pages, 3 figures
Additional file 1 of 'It’s not going to be a one size fits all': a qualitative exploration of the potential utility of three drug checking service models in Scotland
Creators: name: Carver, Hannah
name: Falzon, Danilo
name: Masterton, Wendy
name: Wallace, Bruce
name: Aston, Elizabeth V.
name: Measham, Fiona
name: Hunter, Carole
name: Sumnall, Harry
name: Gittins, Rosalind
name: Raeburn, Fiona
name: Craik, Vicki
name: Priyadarshi, Saket
name: Rothney, Laura
name: Weir, Kira
name: Parkes, Tessa
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Mental Health

description: Additional file 1. Interview schedules for all groups
Land Suitability Assessment of Green Infrastructure Development
Creators: name: Ustaoglu, Eda
name: Aydınoglu, Arif Cagdas
Publisher: name: TeMA - Journal of Land Use, Mobility and Environment
Year: 2019

description: Urban green space, an integral part of urban ecosystems, provides important environmental and social services that mitigate environmental problems caused by rapid urbanisation and urban sprawl. Urban planning and policy aim at optimising the benefits obtained from urban green spaces. The analytic hierarch process (AHP) is a commonly used technique for suitability assessment of land uses. The traditional AHP method is criticised for its subjectivity and uncertainty. Considering this, Fuzzy-AHP has been introduced as an advanced methodology in dealing with the uncertainty in the decision making process. In this study, we compared the two methods of AHP and fuzzy-AHP integrated with geographic information systems (GIS) for the suitability assessment of Pendik district, Istanbul regarding green space development. First, criteria and sub-criteria were determined and the corresponding weights were assigned based on literature and experts’ knowledge. This is followed by preparation of spatial maps integrated with the corresponding weights and development of final suitability maps in both methods of AHP and fuzzy-AHP. Our results show that high suitability areas are mainly distributed in the southern part of Pendik district around the existing urban green infrastructure. In both maps obtained from AHP and fuzzy-AHP, more than 30 percent of the study area has the potential for green space development.
description: TeMA - Journal of Land Use, Mobility and Environment, Vol 12 No 2 (2019): The Times They Are a-Changin'
Ecosystem Services’ Based Impact Assessment for Low Carbon Transition Processes
Creators: name: Pilogallo, Angela
name: Saganeiti, Lucia
name: Scorza, Francesco
name: Murgante, Beniamino
Publisher: name: TeMA - Journal of Land Use, Mobility and Environment
Year: 2019

description: Low carbon transition represents one of the main challenges engaging territorial governments in a multi-scale structure of planning and actions. The thematic focus on renewable energies sources (RES) development prevailed on an integrated approach to plan such relevant process in a more integrated and systemic view based on multiple territorial values estimation and the assessment of potential conflicts depending on technological and landscape impacts RES transition implies extensive territorial transformations and, in the case of Italy, the public management spent more effort in targeting RES installation objectives more than proposing a territorial plan of suitable area where such a process might be development preserving local territorial structure and values. This paper presents the results of an ex-post analysis carried out to assess the effects of the rapid advent of renewable energy plants in a specific territorial context: Melfi area in Basilicata (Italy). Such a context is characterized by agricultural vocation and high natural values, but also representing the settlement place of the biggest industrial automotive center in the south of Italy. The research approach is based on ecosystem services assessment through selected INVEST tools according with the presence of relevant specific features in the investigation area: carbon stock and storage, crop production, crop pollination and habitat quality. Results allow to quantify an extensive territorial impacts generated by photovoltaics plants and wind-farms compared with production potential. Consequently policy recommendation are proposed in order to improve the governance model for future development of the sustainable energy sector in Basilicata.
description: TeMA - Journal of Land Use, Mobility and Environment, Vol 12 No 2 (2019): The Times They Are a-Changin'
The Symmetry Principle in Condensed Matter Physics (I)
Creators: name: Wu, Congjun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Symmetry distills the simplicity of natural laws from the complexity of physical phenomena. The symmetry principle is of vital importance in various aspects of modern physics, including analyzing atomic spectra, determining fundamental interactions in the Standard Model, and unifying physics at different energy scales. In this chapter, novel applications of this principle are reviewed in condensed matter physics and cold atom physics for exploring new states of matter.
Mobility: exploratory analysis for territorial preferences
Creators: name: Santos, Alessandra G.T.
name: Moura, Ana Clara Mourão
Publisher: name: TeMA - Journal of Land Use, Mobility and Environment
Year: 2019

description: Urban mobility is a current challenge on modern life and has its implications not only on time misuse but also on citizens’ health. Spending hours of a day on traffic, people interact with the environment they are susceptible to, which implicates on their manner of seeing, enjoying and living a city. To analyze this impact, an exploratory study was developed on the possibilities of using data composition and spatial analysis tools to select and combine main variables in order to diagnose characteristics of urban landscape on Pampulha Region, in Belo Horizonte (MG), Brazil. Territorial Analysis Units (UTA) were delimited and urban data were studied. First, the main characteristics were represented in categories of variables, and then they were recombined by utilizing Multi-Criteria Methods based on Weighted Sum to present results of suitability for walkability. For each step of spatial analysis, were generated Suitability (Multi-Criteria) and Sensitivity (Uncertainties) Evaluation Maps, proving the similarities of areas considered attractive and vulnerable with the goal to refine the partial results and select the main variables related to walkability. The case study presents the most significant characteristics that might be considered when planning quality of life on urban environments.
description: TeMA - Journal of Land Use, Mobility and Environment, Vol 12 No 2 (2019): The Times They Are a-Changin'
High Energy Resummed Predictions for the Production of a Higgs Boson with at least One Jet
Creators: name: Andersen, Jeppe R.
name: Hassan, Hitham
name: Maier, Andreas Martin
name: Paltrinieri, Jérémy
name: Papaefstathiou, Andreas
name: Smillie, Jennifer M.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022
Subjects: energy, high
Higgs particle, production
quark, mass dependence
cross section, calculated
jet, energy
higher-order, 1
resummation
CERN LHC Coll
phase space
tree approximation

description: We present all-order predictions for Higgs boson production plus at least one jet which are accurate to leading logarithm in $\hat s/|p_\perp|^2$. Our calculation includes full top and bottom quark mass dependence at all orders in the logarithmic part, and to highest available order in the tree-level matching. The calculation is implemented in the framework of High Energy Jets (HEJ). This is the first cross section calculated with $\log(\hat s)$ resummation and matched to fixed order for a process requiring just one jet, and our results also extend the region of resummation for processes with two jets or more. This is possible because the resummation is performed explicitly in phase space. We compare the results of our new calculation to LHC data and to next-to-leading order predictions and find a numerically significant impact of the logarithmic corrections in the shape of key distributions, which remains after normalisation of the cross section.
Attenuated gravitational radiation
Creators: name: Giardino, Sergio
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The hypothesis of an alternative way of obtaining gravitational waves is the physical motivation of this article. Using the linear field approximation and a symmetry transformation of the affine connection, new field equations and new gauge conditions have been obtained. Solutions to these field equations have been considered in the empty space and in the wave zone, and in both of them the oscillation amplitudes of their solutions are attenuated exponentially. We expect that these solutions can be useful for building more sophisticated gravitational wave models, and also as an impulse for researching further symmetry transformations of general relativity.
description: Braz J Phys 52, 185 (2022)