pinecone/core-2020-05-10-deduplication huggingface dataset:
The uncatchable smile in Leonardo da Vinci's La Bella Principessa Portrait

A portrait of uncertain origin recently came to light which, after extensive research and examination, was shown to be that rarest of things: a newly discovered Leonardo da Vinci painting entitled La Bella Principessa. This research presents a new illusion which is similar to that identified in the Mona Lisa; La Bella Principessa’s mouth appears to change slant depending on both the viewing distance and the level of blur applied to a digital version of the portrait. Through a series of psychophysics experiments, it was found that a perceived change in the slant of the La Bella Principessa's mouth influences her expression of contentment thus generating an illusion that we have coined the “uncatchable smile". The elusive quality of the Mona Lisa’s smile has been previously reported (Livingstone, 2000) and so the existence of a similar illusion in a portrait painted prior to the Mona Lisa becomes more interesting. The question remains whether Leonardo da Vinci intended this illusion. In any case, it can be argued that the ambiguity created adds to the portrait's allure
Physics from solar neutrinos in dark matter direct detection experiments

The next generation of dark matter direct detection experiments will be
sensitive to both coherent neutrino-nucleus and neutrino-electron scattering.
This will enable them to explore aspects of solar physics, perform the lowest
energy measurement of the weak angle to date, and probe contributions from new
theories with light mediators. In this article, we compute the projected
nuclear and electron recoil rates expected in several dark matter direct
detection experiments due to solar neutrinos, and use these estimates to
quantify errors on future measurements of the neutrino fluxes, weak mixing
angle and solar observables, as well as to constrain new physics in the
neutrino sector. Our analysis shows that the combined rates of solar neutrino
events in second generation experiments (SuperCDMS and LZ) can yield a
measurement of the $pp$ flux to 2.5% accuracy via electron recoil, and slightly
improve the $^8$B flux determination. Assuming a low-mass argon phase,
projected tonne-scale experiments like DARWIN can reduce the uncertainty on
both the $pp$ and boron-8 neutrino fluxes to below 1%. Finally, we use current
results from LUX, SuperCDMS and CDMSlite to set bounds on new interactions
between neutrinos and electrons or nuclei, and show that future direct
detection experiments can be used to set complementary constraints on the
parameter space associated with light mediators.Comment: 15 pages. v3: corrected typos in Table IV and mistake in LUX
  constraints in Fig.
E-government and organizational change: Reappraising the role of ICT and bureaucracy in public service delivery

Journal ArticleThis is the author’s version of a work that was accepted for publication in Government Information Quarterly. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Government Information Quarterly, available via the DOI in this record.There is a substantial literature on e-government that discusses information and communication technology (ICT) as an instrument for reducing the role of bureaucracy in government organizations. The purpose of this paper is to offer a critical discussion of this literature and to provide a complementary argument which favors the use of ICT in the public sector to support the operations of bureaucratic organizations. Based on the findings of a case study - of the Venice Municipality in Italy - the paper discusses how ICT can be used to support rather than eliminate bureaucracy. Using the concepts of e-bureaucracy and functional simplification and closure, the paper proposes evidence and support for the argument that bureaucracy should be preserved and enhanced where e-government policies are concerned. Functional simplification and closure are very valuable concepts for explaining why this should be a viable approach
Patients with anorectal malformation and upper limb anomalies:genetic evaluation is warranted

Abstract The objective of this study was to compare the\ud
prevalence of genetic disorders in anorectal malformation\ud
(ARM) patients with upper limb anomalies to that in\ud
ARM patients with other associated anomalies. A retrospective\ud
case study was performed in two pediatric surgery\ud
centers. All patients born between 1990 and 2012\ud
were included. VACTERL (vertebral defects (V), anal\ud
atresia (A), cardiac malformations (C), tracheoesophageal\ud
fistula with esophageal atresia (TE), renal dysplasia (R),\ud
and limb anomalies (L)) was defined as at least three\ud
components present. We included 700 ARM patients:\ud
219 patients (31 %) had isolated ARM, 43 patients\ud
(6 %) had a major upper limb anomaly, and 438 patients\ud
(63 %) had other associated anomalies. The most prevalent\ud
upper limb anomalies were radial dysplasia (n=12)\ud
and hypoplastic thumb (n= 11). Ten of the 43 patients\ud
(23 %) with an upper limb anomaly were diagnosed\ud
with a genetic disorder—nine also met the VACTERL\ud
criteria—vs. 9 % of ARM patients with other anomalies\ud
(p=0.004, chi-squared test).  \ud
Conclusion: Genetic disorders are twice as frequently diagnosed\ud
in ARM patients with upper limb anomalies than in\ud
those with other anomalies. As they also frequently meet the\ud
VACTERL criteria, it is important to consider VACTERL as a\ud
diagnosis per exclusionem. Genetic counseling is certainly\ud
warranted in these patients
VirtualECare: group support in collaborative networks organizations for digital homecare

Collaborative Work plays an important role in today’s organizations, especially in areas where decisions must be made. However, any decision that involves a collective or group of decision makers is, by itself complex, but is becoming recurrent in recent years. In this work we present the VirtualECare project, an intelligent multi-agent system able to monitor, interact and serve its customers, which are, normally, in need of care services. In last year’s there has been a substantially increase on the number of people needed of intensive care, especially among the elderly, a phenomenon that is related to population ageing. However, this is becoming not exclusive of the elderly, as diseases like obesity, diabetes and blood pressure have been increasing among young adults. This is a new reality that needs to be dealt by the health sector, particularly by the public one. Given this scenarios, the importance of finding new and cost effective ways for health care delivery are of particular importance, especially when we believe they should not to be removed from their natural “habitat”. Following this line of thinking, the VirtualECare project will be presented, like similar ones that preceded it. Recently we have also assisted to a growing interest in combining the advances in information society - computing, telecommunications and presentation – in order to create Group Decision Support Systems (GDSS). Indeed, the new economy, along with increased competition in today’s complex business environments, takes the companies to seek complementarities in order to increase competitiveness and reduce risks. Under these scenarios, planning takes a major role in a company life. However, effective planning depends on the generation and analysis of ideas (innovative or not) and, as a result, the idea generation and management processes are crucial. Our objective is to apply the above presented GDSS to a new area. We believe that the use of GDSS in the healthcare arena will allow professionals to achieve better results in the analysis of one’s Electronically Clinical Profile (ECP). This achievement is vital, regarding the explosion of knowledge and skills, together with the need to use limited resources and get better results
Measurement of colour flow with the jet pull angle in t(t)over-bar events using the ATLAS detector at root s=8 TeV

The distribution and orientation of energy inside jets is predicted to be an experimental handle on colour connections between the hard-scatter quarks and gluons initiating the jets. This Letter presents a measurement of the distribution of one such variable, the jet pull angle. The pull angle is measured for jets produced in t (t) over bar events with one W boson decaying leptonically and the other decaying to jets using 20.3 fb(-1) of data recorded with the ATLAS detector at a centre-of-mass energy of root s = 8 TeV at the LHC. The jet pull angle distribution is corrected for detector resolution and acceptance effects and is compared to various models. (C) 2015 CERN for the benefit of the ATLAS Collaboration. Published by Elsevier B.V
Oscillations and translation of a free cylinder in a confined flow

An oscillatory instability has been observed experimentally on an horizontal
cylinder free to move and rotate between two parallel vertical walls of
distance H; its characteristics differ both from vortex shedding driven
oscillations and from those of tethered cylinders in the same geometry. The
vertical motion of the cylinder, its rotation about its axis and its transverse
motion across the gap have been investigated as a function of its diameter D,
its density s, of the mean vertical velocity U of the fluid and of its
viscosity. For a blockage ratio D/H above 0.5 and a Reynolds number Re larger
then 14, oscillations of the rolling angle of the cylinder about its axis and
of its transverse coordinate in the gap are observed together with periodic
variations of the vertical velocity. Their frequency f is the same for the
sedimentation of the cylinder in a static fluid (U = 0) and for a non-zero mean
flow (U 6= 0). The Strouhal number St associated to the oscillation varies as
1/Re with : St.Re = 3 $\pm$ 0.15. The corresponding period 1/f is then
independent of U and corresponds to a characteristic viscous diffusion time
over a distance ~ D, implying a strong influence of the viscosity. These
characteristics differ from those of vortex shedding and tethered cylinders for
which St is instead roughly constant with Re and higher than here
1-- and 0++ heavy four-quark and molecule states in QCD

We estimate the masses of the 1^{--} heavy four-quark and molecule states by
combining exponential Laplace (LSR) and finite energy (FESR) sum rules known
perturbatively to lowest order (LO) in alpha_s but including non-perturbative
terms up to the complete dimension-six condensate contributions. This approach
allows to fix more precisely the value of the QCD continuum threshold (often
taken ad hoc) at which the optimal result is extracted.
  We use double ratio of sum rules (DRSR) for determining the SU(3) breakings
terms. We also study the effects of the heavy quark mass definitions on these
LO results.
  The SU(3) mass-splittings of about (50 - 110) MeV and the ones of about (250
- 300) MeV between the lowest ground states and their 1st radial excitations
are (almost) heavy-flavour independent.
  The mass predictions summarized in Table 4 are compared with the ones in the
literature (when available) and with the three Y_c(4260,~4360,~4660) and
Y_b(10890) 1^{--} experimental candidates. We conclude (to this order
approximation) that the lowest observed state cannot be a pure 1^{--}
four-quark nor a pure molecule but may result from their mixings. We extend the
above analyzes to the 0^{++} four-quark and molecule states which are about
(0.5-1) GeV heavier than the corresponding 1^{--} states, while the splittings
between the 0^{++} lowest ground state and the 1st radial excitation is about
(300-500) MeV. We complete the analysis by estimating the decay constants of
the 1^{--} and 0^{++} four-quark states which are tiny and which exhibit a
1/M_Q behaviour.
  Our predictions can be further tested using some alternative non-perturbative
approaches or/and at LHCb and some other hadron factories.Comment: 13 pages, 15 figures, 4 tables, version to appear in PLB (more
  general choice of the interpolating currents, estimate of the four-quark
  meson decay constants, new references added, slight numerical changes for the
  0++ mass predictions
Inclusive b-hadron production cross section with muons in pp collisions at √s = 7 TeV

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMJournal of High Energy Physics 2011.3 (2011): 090 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)A measurement of the b-hadron production cross section in proton-proton collisions at √s = 7TeV is presented. The dataset, corresponding to 85 nb-1, was recorded with the CMS experiment at the LHC using a low-threshold single-muon trigger. Events are selected by the presence of a muon with transverse momentum pμ T > 6GeV with respect to the beam direction and pseudorapidity |ζμ| < 2.1. The transverse momentum of the muon with respect to the closest jet discriminates events containing b hadrons from background. The inclusive b-hadron production cross section is presented as a function of muon transverse momentum and pseudorapidity. The measured total cross section in the kinematic acceptance is σ(pp → b + X → μ + X′) = 1.32 ± 0.01(stat) ± 0.30(syst) ± 0.15(lumi)μ
UMTS-HSDPA in High Altitude Platforms (HAPs) communications

In this paper, the performance of HAPs (High Altitudes Platforms) UMTS HSDPA (High Speed
Downlink Packet Access) is studied for different HAPs height h, different cells radius R and two directions
(0◦ and 30◦) within the cell. The network under study is assumed to have 61 ground cells. It is noticed
that, for urban zone users, the effective range is lower than the effective range for users in rural zones
for a given modulation scheme. Also it is noticed that in rural zone, the HSDPA can support higher
modulation schemes. It is noticed that, when 80% of the base station total power is assigned to the
HSDPA service, then, for rural zones three HSDPA users can be supported with the highest modulation
scheme (3/4 16QAM). Also it is noticed that, in urban zones, only one HSDPA user can be supported
with the highest modulation scheme
Search for new particles decaying to ZZ using final states with leptons and jets with the ATLAS detector in √s=7 TeV proton-proton collisions

Artículo escrito por muchos autores, sólo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración y los autores que firman como pertenecientes a la UAMA search is presented for a narrow resonance decaying to a pair of Z bosons using data corresponding to 1.02fb-1 of integrated luminosity collected by the ATLAS experiment from pp collisions at √s=7TeV. Events containing either four charged leptons (ℓℓℓℓ) or two charged leptons and two jets (ℓℓjj) are analyzed and found to be consistent with the Standard Model background expectation. Lower limits on a resonance mass are set using the Randall-Sundrum (RS1) graviton model as a benchmark. Using both ℓℓℓℓ and ℓℓjj events, an RS1 graviton with k/m-pl=0.1 and mass between 325 and 845 GeV is excluded at 95% confidence level. In addition, the ℓℓℓℓ events are used to set a model-independent fiducial cross section limit of σfid(pp→X→ZZ)<0.92pb at 95% confidence level for any new sources of ZZ production with mZZ greater than 300 GeVWe acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET and ERC, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNAS, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MERYS (MECTS), Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America.
The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NLT1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA) and in the Tier-2 facilities worldwid
Tourism demand modelling and forecasting : a review of recent research

This paper reviews the published studies on tourism demand modelling and forecasting since 2000. One of the key findings of this review is that the methods used in analysing and forecasting the demand for tourism have been more diverse than those identified by other review articles. In addition to the most popular time-series and econometric models, a number of new techniques have emerged in the literature. However, as far as the forecasting accuracy is concerned, the study shows that there is no single model that consistently outperforms other models in all situations. Furthermore, this study identifies some new research directions, which include improving the forecasting accuracy through forecast combination; integrating both qualitative and quantitative forecasting approaches, tourism cycles and seasonality analysis, events' impact assessment and risk forecasting.School of Hotel and Tourism Management2007-2008 > Academic research: refereed > Publication in refereed journalpreprint_postprin
Virtual sign : a real time bidirectional translator of portuguese sign language

Promoting equity, equal opportunities to all and social inclusion of people with disabilities is a concern of modern societies at large and a key topic in the agenda of European Higher Education. Despite all the progress, we cannot ignore the fact that the conditions provided by the society for the deaf are still far from being perfect. The communication with deaf by means of written text is not as efficient as it might seem at first. In fact, there is a very deep gap between sign language and spoken/written language. The vocabulary, the sentence construction and the grammatical rules are quite different among these two worlds. These facts bring significant difficulties in reading and understanding the meaning of text for deaf people and, on the other hand, make it quite difficult for people with no hearing disabilities to understand sign language. The deployment of tools to assist the daily communication, in schools, in public services, in museums and other, between deaf people and the rest may be a significant contribution to the social inclusion of the deaf community. The work described in this paper addresses the development of a bidirectional translator between Portuguese Sign Language and Portuguese text. The translator from sign language to text resorts to two devices, namely the Microsoft Kinect and 5DT Sensor Gloves in order to gather data about the motion and shape of the hands. The hands configurations are classified using Support Vector Machines. The classification of the movement and orientation of the hands are achieved through the use of Dynamic Time Warping algorithm. The translator exhibits a precision higher than 90%. In the other direction, the translation of Portuguese text to Portuguese Sign Language is supported by a 3D avatar which interprets the entered text and performs the corresponding animations
Synthesis of tetrazole analogues of amino acids using Fmoc chemistry: isolation of amino free tetrazoles and their incorporation into peptides

An efficient synthesis of tetrazole analogues of amino acids starting from NÎ±-Fmoc amino acid in a three-step protocol is reported. The free amino tetrazoles were obtained in good yields and with excellent purity after removal of the Fmoc group. The synthesis of analogues of aspartic and glutamic acids in which the 5-tetrazolyl moiety is inserted at the Î²/Î³ carboxyl group starting from Fmoc-Asn and Fmoc-Gln and the incorporation of these tetrazoles into peptides are also described. Â© 2007 Elsevier Ltd. All rights reserved
An experiment of X-ray photon-photon elastic scattering with a Laue-case
  beam collider

We report a search for photon-photon elastic scattering in vacuum in the
X-ray region at an energy in the center of mass system of \omega_{cms} =6.5 keV
for which the QED cross section is \sigma_{QED} =2.5 \times 10^{-47} m^2. An
X-ray beam provided by the SACLA X-ray Free Electron Laser is split and the two
beamlets are made to collide at right angle, with a total integrated luminosity
of (1.24 \pm 0.08) \times 10^{28} m^{-2}. No signal X rays from the elastic
scattering that satisfy the correlation between energy and scattering angle
were detected. We obtain a 95% C.L. upper limit for the scattering cross
section of 1.9 \times 10^{-27} m^2 at \omega_{cms}=6.5 keV. The upper limit is
the lowest upper limit obtained so far by keV experiments.Comment: 11 pages, 2 Postscript figures, 1 table
The coactivator PGC-1α regulates mouse skeletal muscle oxidative metabolism independently of the nuclear receptor PPARβ/δ in sedentary mice fed a regular chow diet

AIMS/HYPOTHESIS: Physical activity improves oxidative capacity and exerts therapeutic beneficial effects, particularly in the context of metabolic diseases. The peroxisome proliferator-activated receptor (PPAR) γ coactivator-1α (PGC-1α) and the nuclear receptor PPARβ/δ have both been independently discovered to play a pivotal role in the regulation of oxidative metabolism in skeletal muscle, though their interdependence remains unclear. Hence, our aim was to determine the functional interaction between these two factors in mouse skeletal muscle in vivo.
METHODS: Adult male control mice, PGC-1α muscle-specific transgenic (mTg) mice, PPARβ/δ muscle-specific knockout (mKO) mice and the combination PPARβ/δ mKO + PGC-1α mTg mice were studied under basal conditions and following PPARβ/δ agonist administration and acute exercise. Whole-body metabolism was assessed by indirect calorimetry and blood analysis, while magnetic resonance was used to measure body composition. Quantitative PCR and western blot were used to determine gene expression and intracellular signalling. The proportion of oxidative muscle fibre was determined by NADH staining.
RESULTS: Agonist-induced PPARβ/δ activation was only disrupted by PPARβ/δ knockout. We also found that the disruption of the PGC-1α-PPARβ/δ axis did not affect whole-body metabolism under basal conditions. As expected, PGC-1α mTg mice exhibited higher exercise performance, peak oxygen consumption and lower blood lactate levels following exercise, though PPARβ/δ mKO + PGC-1α mTg mice showed a similar phenotype. Similarly, we found that PPARβ/δ was dispensable for PGC-1α-mediated enhancement of an oxidative phenotype in skeletal muscle.
CONCLUSIONS/INTERPRETATION: Collectively, these results indicate that PPARβ/δ is not an essential partner of PGC-1α in the control of skeletal muscle energy metabolism