cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Opportunities to advance Personalised Medicine research in Africa
Creators: name: Kamau, Lynette
name: Nyawira, Teresia
name: Njambi Musembi, Charity
name: Onsarigo, Mary
name: Mia, Rizwana
name: Kgomo, Karabo
name: Sela, Erika
Publisher: name: Zenodo
Year: 2022
Subjects: Personalised Medicine, Africa, Europe, health research, international collaboration, policy reccomendations,

description: The first Policy Brief of the EU-Africa PerMed project (https://www.euafrica-permed.eu/) presents the findings from the scientific and policy mapping of Personalised Medicine in Africa (PM), and highlights the opportunities that Africa can explore to strengthen the development and implementation of PM. The document also includes a set of Policy Recommendations for African governments, ministries of health, research, science, and technology agencies, as well as regional bodies for advancing the development of PM in African countries, as well as suggestions to solidify the links between Africa and the EU when
 it comes to PM.
description: {"references": ["African Union Commission (2014): Science, Technology and Innovation Strategy for Africa 2024. Available at https://au.int/sites/default/files/newsevents/workingdocuments/33178-wd-stisa- english_-_final.pdf", "Benediktsson I (2019): Introduction to Personalised Medicine: What is? Available at https:// www.eulac-permed.eu/wp-content/uploads/2019/11/EULAC-PerMed-Summer-School-Madrid- Nov-2019-Benediktsson.pdf", "European Commission (2015): What personalised Medicine means. Available at https:// ec.europa.eu/info/research-and-innovation/research-area/health-research-and-innovation/ personalised-medicine_en", "Mulder N. (2017): Development to enable precision medicine in Africa. Personalized Medicine 14(6):467-470: https://www.futuremedicine.com/doi/full/10.2217/pme-2017-0055", "Nordling L. (2017): How the genomics revolution could finally help Africa. Nature 544, 20-22. Available at https://doi.org/10.1038/544020a", "Sahel and West Africa Club Secretariat (SWAC/OECD) (2017): The six regions of the African Union. https://www.oecd.org/swac/maps/48-six-regions-African-Union.pdf", "Sela E, Radwan A, Guinea J. (2021): Mapping the scientific and policy landscape of Personalised Medicine in Africa. EU-Africa PerMed project deliverable D2.1. Available at https://www. euafrica-permed.eu/project-deliverables/", "World Bank (2020): Global Economic Prospects, June 2020. https://documents1.worldbank. org/curated/en/502991591631723294/pdf/Global-Economic-Prospects-June-2020.pdf", "World Health Organisation Regional Office for Africa (2019). A Heavy Burden: The Productivity Cost of Illness in Africa. Available at https://www.afro.who.int/publications/heavy-burden-productivity- cost-illness-africa"]}
Measurement of the antineutrino to neutrino charged-current interaction cross section ratio in MINERvA
Creators: name: Minerva Collaboration
name: Ren, L.
name: Aliaga, L.
name: Altinok, O.
name: Bellantoni, L.
name: Bercellie, A.
name: Betancourt, M.
name: Bodek, A.
name: Bravar, A.
name: Budd, H.
name: Cai, T.
name: Carneiro, M. F.
name: da Motta, H.
name: Dytman, S. A.
name: Diaz, G. A.
name: Eberly, B.
name: Endress, E.
name: Felix, J.
name: Fields, L.
name: Fine, R.
name: Gago, A. M.
name: Galindo, R.
name: Gallagher, H.
name: Ghosh, A.
name: Golan, T.
name: Gran, R.
name: Han, J. Y.
name: Harris, D. A.
name: Hurtado, K.
name: Kiveni, M.
name: Kleykamp, J.
name: Kordosky, M.
name: Le, T.
name: Maher, E.
name: Manly, S.
name: Mann, W. A.
name: Marshall, C. M.
name: Caicedo, D. A. Martinez
name: McFarland, K. S.
name: McGivern, C. L.
name: McGowan, A. M.
name: Messerly, B.
name: Miller, J.
name: Mislivec, A.
name: Morfin, J. G.
name: Mousseau, J.
name: Naples, D.
name: Nelson, J. K.
name: Norrick, A.
name: Nuruzzaman
name: Paolone, V.
name: Park, J.
name: Patrick, C. E.
name: Perdue, G. N.
name: Ramirez, M. A.
name: Ransome, R. D.
name: Ray, H.
name: Rimal, D.
name: Rodrigues, P. A.
name: Ruterbories, D.
name: Schellman, H.
name: Salinas, C. J. Solano
name: Sultana, M.
name: Falero, S. Sanchez
name: Valencia, E.
name: Walton, T.
name: Wolcott, J.
name: Wospakrik, M.
name: Yaeggy, B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present measurements of the neutrino and antineutrino total charged-current cross sections on carbon and their ratio using the MINERvA scintillator-tracker. The measurements span the energy range 2-22 GeV and were performed using forward and reversed horn focusing modes of the Fermilab low-energy NuMI beam to obtain large neutrino and antineutrino samples. The flux is obtained using a sub-sample of charged-current events at low hadronic energy transfer along with precise higher energy external neutrino cross section data overlapping with our energy range between 12-22 GeV. We also report on the antineutrino-neutrino cross section ratio, Rcc, which does not rely on external normalization information. Our ratio measurement, obtained within the same experiment using the same technique, benefits from the cancellation of common sample systematic uncertainties and reaches a precision of 5% at low energy. Our results for the antineutrino-nucleus scattering cross section and for Rcc are the most precise to date in the energy range $E_ν
Two-Loop Corrections to Large Order Behavior of $φ^4$ Theory
Creators: name: Malatesta, Enrico M.
name: Parisi, Giorgio
name: Rizzo, Tommaso
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the large order behavior of the perturbative expansion of the scalar $φ^4$ field theory in terms of a perturbative expansion around an instanton solution. We have computed the series of the free energy up to two-loop order in two and three dimension. Topologically there is only an additional Feynman diagram with respect to the previously known one dimensional case, but a careful treatment of renormalization is needed. The propagator and Feynman diagrams were expressed in a form suitable for numerical evaluation. We then obtained explicit expressions summing over $O(10^3)$ distinct eigenvalues determined numerically with the corresponding eigenfunctions.
description: 12 pages, 2 figures
Emerging dynamics arising from coarse-grained quantum systems
Creators: name: Duarte, Cristhiano
name: Carvalho, Gabriel Dias
name: Bernardes, Nadja K.
name: de Melo, Fernando
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The purpose of physics is to describe nature from elementary particles all the way up to cosmological objects like cluster of galaxies and black holes. Although a unified description for all this spectrum of events is desirable, this would be highly impractical. To not get lost in unnecessary details, effective descriptions are mandatory. Here we analyze the dynamics that may emerge from a full quantum description when one does not have access to all the degrees of freedom of a system. More concretely, we describe the properties of the dynamics that arise from quantum mechanics if one has access only to a coarse-grained description of the system. We obtain that the effective maps are not necessarily of Kraus form, due to correlations between accessible and nonaccessible degrees of freedom, and that the distance between two effective states may increase under the action of the effective map. We expect our framework to be useful for addressing questions such as the thermalization of closed quantum systems, as well as the description of measurements in quantum mechanics.
description: 10 pages, 8 figures. v3: Title changed; minor improvements. Version accepted for publication
Happiness in the Sky? Poster Research day 21 september - Valcke Lien
Creators: name: Valcke, Lien
Publisher: name: Zenodo
Year: 2023
Subjects: Wellbeing at work
Safety (behaviour)
European aviation
Cockpit and cabin crew
Union (satisfaction)
Transnational unions
Covid-19

description: Happiness in the sky? (Atypical) employment, job-related wellbeing in European cockpit and cabin crew, and the relationship with safety (behaviour). What? My doctoral thesis had the ambition to analyse the relationship between the employment conditions, related management culture, and the general (mental and physical) wellbeing of the European cockpit and cabin crew and whether the latter affects safety (behaviour) in the professional context. How? The research is conducted from the point of view of the employees/ workers, and consists of an extensive literature study and dissection of the existing legal framework but is mainly based on different, self-gathered, datasets (dating from the year 2014 until 2023) and associated statistical analysis. Why? Results do show a lack of upgrade in working conditions and the employment context of the European aircrew in the last 10 years, even more we can state that the Green transition and the Covid-19 crisis have put extra stressors and strain on wages, job security, working conditions and resulted in an even more pronounced dehumanizing management style. These elements know a significant effect on the mental and physical wellbeing of the workers, in a strikingly negative tendency, even with a heightened focus and awareness of the possible impact on safety. We did question possible positive influences, besides humanization and colleague support. Evidence from our research determines union satisfaction to be an important and significant buffer. The importance of an active negotiation culture, acknowledgment of the trade unions and social dialogue in aviation should therefore not be underestimated, moreover in the context of safety. Where to go? Safety is the cornerstone of the aviation industry and has known a primarily technical approach until recent years. Where academics and interest groups, such as trade unions, detect the importance of the human capital and the fostering of quality employment to gain in safety, management of airline companies do not recognize this correlation at this point. Our data does, however, affirm the relationship between stressed wellbeing and diminished results for safety (behaviour). Safety is associated with a complex combination of factors, but management factors resulting in a more favorable employment situation seem to create the most conducive environment for aviation safety.
Unification with Vector-like fermions and signals at LHC
Creators: name: Bhattacherjee, Biplob
name: Byakti, Pritibhajan
name: Kushwaha, Ashwani
name: Vempati, Sudhir K
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We look for minimal extensions of Standard Model with vector like fermions leading to precision unification of gauge couplings. Constraints from proton decay, Higgs stability and perturbativity are considered. The simplest models contain several copies of vector fermions in two different (incomplete) representations. Some of these models encompass Type III seesaw mechanism for neutrino masses whereas some others have a dark matter candidate. In all the models, at least one of the candidates has non-trivial representation under $SU(3)_{color}$. In the limit of vanishing Yukawa couplings, new QCD bound states are formed, which can be probed at LHC. The present limits based on results from 13 TeV already probe these particles for masses around a TeV. Similar models can be constructed with three or four vector representations, examples of which are presented.
description: 48 pages; v3:major corrections with discussion on threshold corrections, version accepted for publication in JHEP
Quasi-adiabatic Grover search via the WKB approximation
Creators: name: Muthukrishnan, Siddharth
name: Lidar, Daniel A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In various applications one is interested in quantum dynamics at intermediate evolution times, for which the adiabatic approximation is inadequate. Here we develop a quasi-adiabatic approximation based on the WKB method, designed to work for such intermediate evolution times. We apply it to the problem of a single qubit in a time-varying magnetic field, and to the Hamiltonian Grover search problem, and show that already at first order, the quasi-adiabatic WKB captures subtle features of the dynamics that are missed by the adiabatic approximation. However, we also find that the method is sensitive to the type of interpolation schedule used in the Grover problem, and can give rise to nonsensical results for the wrong schedule, due to loss of normalization. Conversely, it reproduces the quadratic Grover speedup when the well-known optimal schedule is used.
description: 13 pages, 13 figures; updated to published version
The GUP effect on tunnelling of massive vector bosons from the 2+1 dimensional black hole
Creators: name: Gecim, Ganim
name: Sucu, Yusuf
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this study, the Generalized Uncertainty Principle (GUP) effect on the Hawking radiation formed by tunneling of a massive vector boson particle from the $2+1$ dimensional New-type Black Hole was investigated. We used modified massive vector boson equation based on the GUP. Then, the Hamilton-Jacobi quantum tunneling approach was used to work out the tunneling probability of the massive vector boson particle and, Hawking temperature of the black hole. Due to the GUP effect, the modified Hawking temperature was found to depend on the black hole properties, the AdS$_{3}$ radius, and on the energy, mass and total angular momentum of the tunneling massive vector boson. In the light of these results, we also observed that modified Hawking temperature increases by the total angular momentum the particle while it decreases by the energy and mass of the particle, and the graviton mass. Also, in the context of the GUP, we see that the Hawking temperature due to the tunnelling massive vector boson is completely different from both that of the spin-0 scalar and the spin-1/2 Dirac particles obtained in the previous study. We also calculate the heat capacity of the black hole using the modified Hawking temperature and then discuss influence of the GUP on the stability of the black hole.
description: 11 pages, accepted for publication for Advances in High Energy Physics
Negative refraction in Weyl semimetals
Creators: name: Ukhtary, M. Shoufie
name: Nugraha, Ahmad R. T.
name: Saito, Riichiro
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We theoretically propose that Weyl semimetals may exhibit negative refraction at some frequencies close to the plasmon frequency, allowing transverse magnetic (TM) electromagnetic waves with frequencies smaller than the plasmon frequency to propagate in the Weyl semimetals. The idea is justified by the calculation of reflection spectra, in which \textit{negative} refractive index at such frequencies gives physically correct spectra. In this case, a TM electromagnetic wave incident to the surface of the Weyl semimetal will be bent with a negative angle of refraction. We argue that the negative refractive index at the specified frequencies of the electromagnetic wave is required to conserve the energy of the wave, in which the incident energy should propagate away from the point of incidence.
description: 7 pages, 7 figures
Light-induced fractional quantum Hall phases in graphene
Creators: name: Ghazaryan, Areg
name: Graß, Tobias
name: Gullans, Michael J.
name: Ghaemi, Pouyan
name: Hafezi, Mohammad
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show how to realize two-component fractional quantum Hall phases in monolayer graphene by optically driving the system. A laser is tuned into resonance between two Landau levels, giving rise to an effective tunneling between these two synthetic layers. Remarkably, because of this coupling, the interlayer interaction at non-zero relative angular momentum can become dominant, resembling a hollow-core pseudo-potential. In the weak tunneling regime, this interaction favors the formation of singlet states, as we explicitly show by numerical diagonalization, at fillings $ν=1/2$ and $ν=2/3$. We discuss possible candidate phases, including the Haldane-Rezayi phase, the interlayer Pfaffian phase, and a Fibonacci phase. This demonstrates that our method may pave the way towards the realization of non-Abelian phases, as well as the control of topological phase transitions, in graphene quantum Hall systems using optical fields and integrated photonic structures.
description: 5 pages, 3 figures + supplementary material (15 pages)
Gauge symmetry and constraints structure in topologically massive AdS gravity: A symplectic viewpoint
Creators: name: Rodríguez-Tzompantzi, Omar
name: Escalante, Alberto
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By applying the Faddeev-Jackiw symplectic approach we systematically show that both the local gauge symmetry and the constraint structure of topologically massive gravity with a cosmological constant $Λ$, elegantly encoded in the zero-modes of the symplectic matrix, can be identified. Thereafter, via an appropriate partial gauge-fixing procedure, the time gauge, we calculate the quantization bracket structure (generalized Faddeev-Jackiw brackets) for the dynamic variables and confirm that the number of physical degrees of freedom is one. This approach provides an alternative to explore the dynamical content of massive gravity models.
Happiness in the Sky?
Creators: name: Valcke, Lien
Publisher: name: Zenodo
Year: 2023
Subjects: Wellbeing at work
Safety (behaviour)
European aviation
Cockpit and cabin crew
Union (satisfaction)
Transnational unions
Covid-19

description: Happiness in the sky? (Atypical) employment, job-related wellbeing in European cockpit and cabin crew, and the relationship with safety (behaviour). What? My doctoral thesis had the ambition to analyse the relationship between the employment conditions, related management culture, and the general (mental and physical) wellbeing of the European cockpit and cabin crew and whether the latter affects safety (behaviour) in the professional context. How? The research is conducted from the point of view of the employees/ workers, and consists of an extensive literature study and dissection of the existing legal framework but is mainly based on different, self-gathered, datasets (dating from the year 2014 until 2023) and associated statistical analysis. Why? Results do show a lack of upgrade in working conditions and the employment context of the European aircrew in the last 10 years, even more we can state that the Green transition and the Covid-19 crisis have put extra stressors and strain on wages, job security, working conditions and resulted in an even more pronounced dehumanizing management style. These elements know a significant effect on the mental and physical wellbeing of the workers, in a strikingly negative tendency, even with a heightened focus and awareness of the possible impact on safety. We did question possible positive influences, besides humanization and colleague support. Evidence from our research determines union satisfaction to be an important and significant buffer. The importance of an active negotiation culture, acknowledgment of the trade unions and social dialogue in aviation should therefore not be underestimated, moreover in the context of safety. Where to go? Safety is the cornerstone of the aviation industry and has known a primarily technical approach until recent years. Where academics and interest groups, such as trade unions, detect the importance of the human capital and the fostering of quality employment to gain in safety, management of airline companies do not recognize this correlation at this point. Our data does, however, affirm the relationship between stressed wellbeing and diminished results for safety (behaviour). Safety is associated with a complex combination of factors, but management factors resulting in a more favorable employment situation seem to create the most conducive environment for aviation safety.
Quivers with relations for symmetrizable Cartan matrices V. Caldero-Chapoton formula
Creators: name: Geiß, Christof
name: Leclerc, Bernard
name: Schröer, Jan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Representation Theory (math.RT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 13F60, 16G20

description: We generalize the Caldero-Chapoton formula for cluster algebras of finite type to the skew-symmetrizable case. This is done by replacing representation categories of Dynkin quivers by categories of locally free modules over certain Iwanaga-Gorenstein algebras introduced in Part I. The proof relies on the realization of the positive part of the enveloping algebra of a simple Lie algebra of the same finite type as a convolution algebra of constructible functions on representation varieties of $H$, given in Part III. Along the way, we obtain a new result on the PBW basis of this convolution algebra.
description: 24 pages. V2: Exposition improved and a few typos fixed after referee report. Final version, to appear in Proc. London Math. Soc
The Increasing complexity of guideline‑directed medical therapy for heart failure with reduced ejection fraction and challenges for real‑world implementation
Creators: name: Soh, Bing Wei Thaddeus
name: Langille, Jaimie
name: O’Brien, Kathryn
name: Glasgow, Jacinta
name: Murray, Siobhan
name: Abbas, Syed
name: O’Connor, Cormac
name: Arnous, Samer
name: KIERNAN, THOMAS
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: The latest guidelines for heart failure with reduced ejection fraction (HFrEF) recommend concurrent treatment with four drug classes to improve patient outcomes. While physicians likely have the skillsets needed to navigate the complexities of multiple drug interactions, HF nurse prescribers lack experience needed to implement the latest guideline-directed medical therapy (GDMT). As nurse-led HF services continue to expand, implementing GDMT is essential for gold-standard care. We describe and compare the abilities of physician-led and nurse-led HF clinics in implementing GDMT in HFrEF within the outpatient setting. A retrospective multi-centre cohort study was performed on the pharmacotherapy patterns of HFrEF patients attending either a physician-led or nurse-led HF clinic in 2021. Pharmacotherapy patterns of prescribing on the pillars of HFrEF therapy were collected: ACEi/ARB/ARNi, BB, MRA, SGLT2i. 164 and 231 HFrEF patients were reviewed in a physician-led and nurse-led group respectively. Compared to physicians, there were signifcantly lower rates of MRA (42.0% vs 62.8%, P < 0.001) and SGLT2i (7.8% vs 24.4%, P < 0.001) prescribed by nurses. Most patients seen by physicians were treated with three drug classes (45.7%) versus two drug classes (50.2%) when seen by nurses. Ongoing gaps in GDMT implementation are driven by the suboptimal MRA and SGLT2i use. Patients seen by nurses were treated with less drug classes and less likely to be treated with MRA and SGLT2i compared to physicians. These fndings highlight the ongoing difculties autonomous nurse prescribers face in HF prescribing and the need for further educational supports.
Spectral properties of single photons from quantum emitters
Creators: name: Müller, Philipp
name: Tentrup, Tristan
name: Bienert, Marc
name: Morigi, Giovanna
name: Eschner, Jürgen
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum networks require flying qubits that transfer information between the nodes. This may be implemented by means of single atoms (the nodes) that emit and absorb single photons (the flying qubits) and requires full control of photon absorption and emission by the individual emitters. In this work, we theoretically characterize the wave packet of a photon emitted by a single atom undergoing a spontaneous Raman transition in a three-level scheme. We investigate several excitation schemes that are experimentally relevant and discuss control parameters that allow one to tailor the spectrum of the emitted photon wave packet.
The convexification effect of Minkowski summation
Creators: name: Fradelizi, Matthieu
name: Madiman, Mokshay
name: Marsiglietti, Arnaud
name: Zvavitch, Artem
Publisher: name: arXiv
Year: 2017
Subjects: subject: Functional Analysis (math.FA)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 60E15 11B13 (Primary), 94A17 60F15 (Secondary)

description: Let us define for a compact set $A \subset \mathbb{R}^n$ the sequence $$ A(k) = \left\{\frac{a_1+\cdots +a_k}{k}: a_1, \ldots, a_k\in A\right\}=\frac{1}{k}\Big(\underset{k\ {\rm times}}{\underbrace{A + \cdots + A}}\Big). $$ It was independently proved by Shapley, Folkman and Starr (1969) and by Emerson and Greenleaf (1969) that $A(k)$ approaches the convex hull of $A$ in the Hausdorff distance induced by the Euclidean norm as $k$ goes to $\infty$. We explore in this survey how exactly $A(k)$ approaches the convex hull of $A$, and more generally, how a Minkowski sum of possibly different compact sets approaches convexity, as measured by various indices of non-convexity. The non-convexity indices considered include the Hausdorff distance induced by any norm on $\mathbb{R}^n$, the volume deficit (the difference of volumes), a non-convexity index introduced by Schneider (1975), and the effective standard deviation or inner radius. After first clarifying the interrelationships between these various indices of non-convexity, which were previously either unknown or scattered in the literature, we show that the volume deficit of $A(k)$ does not monotonically decrease to 0 in dimension 12 or above, thus falsifying a conjecture of Bobkov et al. (2011), even though their conjecture is proved to be true in dimension 1 and for certain sets $A$ with special structure. On the other hand, Schneider's index possesses a strong monotonicity property along the sequence $A(k)$, and both the Hausdorff distance and effective standard deviation are eventually monotone (once $k$ exceeds $n$). Along the way, we obtain new inequalities for the volume of the Minkowski sum of compact sets, falsify a conjecture of Dyn and Farkhi (2004), demonstrate applications of our results to combinatorial discrepancy theory, and suggest some questions worthy of further investigation.
description: 60 pages, 7 figures. v2: Title changed. v3: Added Section 7.2 resolving Dyn-Farkhi conjecture
Sequence-to-point learning with neural networks for nonintrusive load monitoring
Creators: name: Zhang, Chaoyun
name: Zhong, Mingjun
name: Wang, Zongzuo
name: Goddard, Nigel
name: Sutton, Charles
Publisher: name: arXiv
Year: 2016
Subjects: subject: Applications (stat.AP)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Energy disaggregation (a.k.a nonintrusive load monitoring, NILM), a single-channel blind source separation problem, aims to decompose the mains which records the whole house electricity consumption into appliance-wise readings. This problem is difficult because it is inherently unidentifiable. Recent approaches have shown that the identifiability problem could be reduced by introducing domain knowledge into the model. Deep neural networks have been shown to be a promising approach for these problems, but sliding windows are necessary to handle the long sequences which arise in signal processing problems, which raises issues about how to combine predictions from different sliding windows. In this paper, we propose sequence-to-point learning, where the input is a window of the mains and the output is a single point of the target appliance. We use convolutional neural networks to train the model. Interestingly, we systematically show that the convolutional neural networks can inherently learn the signatures of the target appliances, which are automatically added into the model to reduce the identifiability problem. We applied the proposed neural network approaches to real-world household energy data, and show that the methods achieve state-of-the-art performance, improving two standard error measures by 84% and 92%.
description: 8 pages, 3 figures
Hidden Conformal Symmetry in Randall-Sundrum 2 Model: Universal Fermion Localization by Torsion
Creators: name: Alencar, G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this manuscript we describe a hidden conformal symmetry of the second Randall-Sundrum model (RS2). We show how this can be used to localize fermions of both chiralities. The conformal symmetry leaves few free dimensionless constants and constrains the allowed interactions. In this formulation the warping of the extra dimension emerges from a partial breaking of the conformal symmetry in five dimensions. The solution of the system can be described in two alternative gauges: by the metric or by the conformon. By considering this as a fundamental symmetry we construct a conformally invariant action for a vector field which provides a massless photon localized over a Minkowski brane. This is obtained by a conformal non-minimal coupling that breaks the gauge symmetry in five dimensions. We further consider a generalization of the model by including conformally invariant torsion. By coupling torsion non-minimally to fermions we obtain a localized zero mode of both chiralities completing the consistence of the model. The inclusion of torsion introduces a fermion quartic interaction that can be used to probe the existence of large extra dimensions and the validity of the model. This seems to point to the fact that conformal symmetry may be more fundamental than gauge symmetry and that this is the missing ingredient for the full consistence of RS scenarios.
description: Published version
Tractability of Convex Vector Optimization Problems in the Sense of Polyhedral Approximations
Creators: name: Ulus, Firdevs
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90C29, 90C25

description: There are different solution concepts for convex vector optimization problems (CVOPs) and a recent one, which is motivated from a set optimization point of view, consists of finitely many efficient solutions that generate polyhedral inner and outer approximations to the Pareto frontier. A CVOP with compact feasible region is known to be bounded and there exists a solution of this sense to it. However, it is not known if it is possible to generate polyhedral inner and outer approximations to the Pareto frontier of a CVOP if the feasible region is not compact. This study shows that not all CVOPs are tractable in that sense and gives a characterization of tractable problems in terms of the well known weighted sum scalarization problems.
Experimental Two-dimensional Quantum Walk on a Photonic Chip
Creators: name: Tang, Hao
name: Lin, Xiao-Feng
name: Feng, Zhen
name: Chen, Jing-Yuan
name: Gao, Jun
name: Sun, Ke
name: Wang, Chao-Yue
name: Lai, Peng-Cheng
name: Xu, Xiao-Yun
name: Wang, Yao
name: Qiao, Lu-Feng
name: Yang, Ai-Lin
name: Jin, Xian-Min
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Quantum walks, in virtue of the coherent superposition and quantum interference, possess exponential superiority over its classical counterpart in applications of quantum searching and quantum simulation. The quantum enhanced power is highly related to the state space of quantum walks, which can be expanded by enlarging the photon number and/or the dimensions of the evolution network, but the former is considerably challenging due to probabilistic generation of single photons and multiplicative loss. Here we demonstrate a two-dimensional continuous-time quantum walk by using the external geometry of photonic waveguide arrays, rather than the inner degree of freedoms of photons. Using femtosecond laser direct writing, we construct a large-scale three-dimensional structure which forms a two-dimensional lattice with up to 49X49 nodes on a photonic chip. We demonstrate spatial two-dimensional quantum walks using heralded single photons and single-photon-level imaging. We analyze the quantum transport properties via observing the ballistic evolution pattern and the variance profile, which agree well with simulation results. We further reveal the transient nature that is the unique feature for quantum walks of beyond one dimension. An architecture that allows a walk to freely evolve in all directions and a large scale, combining with defect and disorder control, may bring up powerful and versatile quantum walk machines for classically intractable problems.
description: 7 pages, 4 figures. The experiment has been performed again with heralded single photons instead of the coherent light
Evaluation of 50 Greek Science and Engineering University Departments using Google Scholar
Creators: name: Pitsolanti, Marina
name: Papadopoulou, Fotini
name: Tselios, Nikolaos
Publisher: name: arXiv
Year: 2017
Subjects: subject: Digital Libraries (cs.DL)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: In this paper, the scientometric evaluation of faculty members of 50 Greek Science and Engineering University Departments is presented. 1978 academics were examined in total. The number of papers, citations, h-index and i10-index have been collected for each academic, department, school and university using Google Scholar and the citations analysis program Publish or Perish. Analysis of the collected data showed that departments of the same academic discipline are characterized by significant differences on the scientific outcome. In addition, in the majority of the evaluated departments a significant difference in h-index between academics who report scientific activity on the departments website and those who do not, was observed. Moreover, academics who earned their PhD title in the USA demonstrate higher indices in comparison to scholars who obtained their PhD title in Europe or in Greece. Finally, the correlation between the academic rank and the scholars h-index (or the number of their citations) is quite low in some departments, which, under specific circumstances, could be an indication of the lack of meritocracy.
Work drives time evolution
Creators: name: Bruschi, David Edward
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose the idea that time evolution of quantum systems is driven by work. The formalism presented here falls within the scope of a recently proposed theory of gravitating quantum matter where extractible work, and not energy, is responsible for gravitation. Our main assumption is that extractible work, and not the Hamiltonian, dictates dynamics. We find that expectation values of meaningful quantities, such as the occupation number, deviate from those predicted by standard quantum mechanics. The scope, applications and validity of this proposal are also discussed.
description: 4 pages. No figures
Accelerated Cyclic Reduction: A Distributed-Memory Fast Solver for Structured Linear Systems
Creators: name: Chávez, Gustavo
name: Turkiyyah, George
name: Zampini, Stefano
name: Ltaief, Hatem
name: Keyes, David
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We present Accelerated Cyclic Reduction (ACR), a distributed-memory fast direct solver for rank-compressible block tridiagonal linear systems arising from the discretization of elliptic operators, developed here for three dimensions. Algorithmic synergies between Cyclic Reduction and hierarchical matrix arithmetic operations result in a solver that has $O(k~N \log N~(\log N + k^2))$ arithmetic complexity and $O(k~N \log N)$ memory footprint, where $N$ is the number of degrees of freedom and $k$ is the rank of a typical off-diagonal block, and which exhibits substantial concurrency. We provide a baseline for performance and applicability by comparing with the multifrontal method where hierarchical semi-separable matrices are used for compressing the fronts, and with algebraic multigrid. Over a set of large-scale elliptic systems with features of nonsymmetry and indefiniteness, the robustness of the direct solvers extends beyond that of the multigrid solver, and relative to the multifrontal approach ACR has lower or comparable execution time and memory footprint. ACR exhibits good strong and weak scaling in a distributed context and, as with any direct solver, is advantageous for problems that require the solution of multiple right-hand sides.
description: 22 pages, Elsevier Journal of Parallel Computing, Dec 2016
The Schr$\ddot{o}$dinger-Poisson equations as the large-N limit of the Newtonian N-body system: applications to the large scale dark matter dynamics
Creators: name: Briscese, Fabio
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper it is argued how the dynamics of the classical Newtonian N-body system can be described in terms of the Schr$\ddot{o}$dinger-Poisson equations in the large $N$ limit. This result is based on the stochastic quantization introduced by Nelson, and on the Calogero conjecture. According to the Calogero conjecture, the emerging effective Planck constant is computed in terms of the parameters of the N-body system as $\hbar \sim M^{5/3} G^{1/2} (N/)^{1/6}$, where is $G$ the gravitational constant, $N$ and $M$ are the number and the mass of the bodies, and $$ is their average density. The relevance of this result in the context of large scale structure formation is discussed. In particular, this finding gives a further argument in support of the validity of the Schr$\ddot{o}$dinger method as numerical double of the N-body simulations of dark matter dynamics at large cosmological scales.
description: Accepted for publication in the Euro. Phys. J. C
The Boolean SATisfiability Problem in Clifford algebra
Creators: name: Budinich, Marco
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: Computational Complexity (cs.CC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We present a formulation of the Boolean Satisfiability Problem in spinor language that allows to give a necessary and sufficient condition for unsatisfiability. With this result we outline an algorithm to test for unsatisfiability with possibly interesting theoretical properties.
description: 16 pages, better formalization and simpler proofs
Just-in-Time Batch Scheduling Problem with Two-dimensional Bin Packing Constraints
Creators: name: Polyakovskiy, S.
name: Makarowsky, A.
name: M'Hallah, R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: This paper introduces and approximately solves a multi-component problem where small rectangular items are produced from large rectangular bins via guillotine cuts. An item is characterized by its width, height, due date, and earliness and tardiness penalties per unit time. Each item induces a cost that is proportional to its earliness and tardiness. Items cut from the same bin form a batch, whose processing and completion times depend on its assigned items. The items of a batch have the completion time of their bin. The objective is to find a cutting plan that minimizes the weighted sum of earliness and tardiness penalties. We address this problem via a constraint programming based heuristic (CP) and an agent based modelling heuristic (AB). CP is an impact-based search strategy, implemented in the general-purpose solver IBM CP Optimizer. AB is constructive. It builds a solution through repeated negotiations between the set of agents representing the items and the set representing the bins. The agents cooperate to minimize the weighted earliness-tardiness penalties. The computational investigation shows that CP outperforms AB on small-sized instances while the opposite prevails for larger instances.
Electroweak and Higgs Boson Internal Bremsstrahlung: General considerations for Majorana dark matter annihilation and application to MSSM neutralinos
Creators: name: Bringmann, Torsten
name: Calore, Francesca
name: Galea, Ahmad
name: Garny, Mathias
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is well known that the annihilation of Majorana dark matter into fermions is helicity suppressed. Here, we point out that the underlying mechanism is a subtle combination of two distinct effects, and we present a comprehensive analysis of how the suppression can be partially or fully lifted by the internal bremsstrahlung of an additional boson in the final state. As a concrete illustration, we compute analytically the full amplitudes and annihilation rates of supersymmetric neutralinos to final states that contain any combination of two standard model fermions, plus one electroweak gauge boson or one of the five physical Higgs bosons that appear in the minimal supersymmetric standard model. We classify the various ways in which these three-body rates can be large compared to the two-body rates, identifying cases that have not been pointed out before. In our analysis, we put special emphasis on how to avoid the double counting of identical kinematic situations that appear for two-body and three-body final states, in particular on how to correctly treat differential rates and the spectrum of the resulting stable particles that is relevant for indirect dark matter searches. We find that both the total annihilation rates and the yields can be significantly enhanced when taking into account the corrections computed here, in particular for models with somewhat small annihilation rates at tree-level which otherwise would not be testable with indirect dark matter searches. Even more importantly, however, we find that the resulting annihilation spectra of positrons, neutrinos, gamma-rays and antiprotons differ in general substantially from the model-independent spectra that are commonly adopted, for these final states, when constraining particle dark matter with indirect detection experiments.
description: 64 pages with jheppub.sty, 15 figures and 12 tables. Slightly extended discussion + minor updates to match published version
Light propagation in the gravitational field of one arbitrarily moving pointlike body in the 2PN approximation
Creators: name: Zschocke, Sven
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: An analytical solution for the light trajectory in the near-zone of the gravitational field of one pointlike body in arbitrary slow-motion in the post-post-Newtonian approximation is presented in harmonic gauge. Expressions for total light deflection and time delay are given. The presented solution is a further step toward high-precision astrometry aiming at nano-arcsecond level of accuracy.
description: 14 pages, 1 diagram
Benjamini-Schramm convergence and limiting eigenvalue density of random matrices
Creators: name: Andraus, Sergio
Publisher: name: arXiv
Year: 2017
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We review the application of the notion of local convergence on locally finite randomly rooted graphs, known as Benjamini-Schramm convergence, to the calculation of the global eigenvalue density of random matrices from the beta-Gaussian and beta-Laguerre ensembles. By regarding a random matrix as the weighted adjacency matrix of a graph, and choosing the root of such a graph with uniform probability, one can use the Benjamini-Schramm limit to produce the spectral measure of the adjacency operator of the limiting graph. We illustrate how the Wigner semicircle law and the Marchenko-Pastur law are obtained from this machinery.
description: 8 pages, 2 figures. Proceedings paper for the Probability Theory Symposium 2016 held at RIMS, Kyoto University, on Dec. 19-22 2016
One-particle-density-matrix occupation spectrum of many-body localized states after a global quench
Creators: name: Lezama, Talía L. M.
name: Bera, Soumya
name: Schomerus, Henning
name: Heidrich-Meisner, Fabian
name: Bardarson, Jens H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The emergent integrability of the many-body localized phase is naturally understood in terms of localized quasiparticles. As a result, the occupations of the one-particle density matrix in eigenstates show a Fermi-liquid-like discontinuity. Here we show that in the steady state reached at long times after a global quench from a perfect density-wave state, this occupation discontinuity is absent, reminiscent of a Fermi liquid at a finite temperature, while the full occupation function remains strongly nonthermal. We discuss how one can understand this as a consequence of the local structure of the density-wave state and the resulting partial occupation of quasiparticles. This partial occupation can be controlled by tuning the initial state and can be described by an effective temperature.
description: 8 pages, 9 figures; added a figure with different initial states
Self-Learning Monte Carlo Method: Continuous-Time Algorithm
Creators: name: Nagai, Yuki
name: Shen, Huitao
name: Qi, Yang
name: Liu, Junwei
name: Fu, Liang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The recently-introduced self-learning Monte Carlo method is a general-purpose numerical method that speeds up Monte Carlo simulations by training an effective model to propose uncorrelated configurations in the Markov chain. We implement this method in the framework of continuous time Monte Carlo method with auxiliary field in quantum impurity models. We introduce and train a diagram generating function (DGF) to model the probability distribution of auxiliary field configurations in continuous imaginary time, at all orders of diagrammatic expansion. By using DGF to propose global moves in configuration space, we show that the self-learning continuous-time Monte Carlo method can significantly reduce the computational complexity of the simulation.
description: 6 pages, 5 figures + 2 page supplemental materials, to be published in Phys. Rev. B Rapid communication section