bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reduced risk of venous thromboembolism with the use of intermittent pneumatic compression after craniotomy: a randomized controlled prospective study
Authors: Prell Julian , Schenk Grit , Taute Bettina-Maria , Scheller Christian , Marquart Christian , Strauss Christian , Rampp Stefan 
Published: March 2018

OBJECTIVEThe term “venous thromboembolism” (VTE) subsumes deep venous thrombosis (DVT) and pulmonary embolism. The incidence of DVT after craniotomy was reported to be as high as 50%. Even clinically silent DVT may lead to potentially fatal pulmonary embolism. The risk of VTE is correlated with duration of surgery, and it appears likely that it develops during surgery. The present study aimed to evaluate intraoperative use of intermittent pneumatic compression (IPC) of the lower extremity for prevention of VTE in patients undergoing craniotomy.METHODSA total of 108 patients undergoing elective craniotomy for intracranial pathology were included in a single-center controlled randomized prospective study. In the control group, conventional compression stockings were worn during surgery. In the treatment group, IPC of the calves was used in addition. The presence of DVT was evaluated by Doppler sonography pre- and postoperatively.RESULTSIntraoperative use of IPC led to a significant reduction of VTE (p = 0.029). In logistic regression analysis, the risk of VTE was approximately quartered by the use of IPC. Duration of surgery was confirmed to be correlated with VTE incidence (p < 0.01); every hour of surgery increased the risk by a factor of 1.56.CONCLUSIONSIntraoperative use of IPC significantly lowers the incidence of potentially fatal VTE in patients undergoing craniotomy. The method is easy to use and carries no additional risks.■ CLASSIFICATION OF EVIDENCE Type of question: therapeutic; study design: randomized controlled trial; evidence: class I.Clinical trial registration no.: DRKS00011783 (https://www.drks.de)
A case of junctional neural tube defect associated with a lipoma of the filum terminale: a new subtype of junctional neural tube defect?
Authors: Florea Simona Mihaela , Faure Alice , Brunel Hervé , Girard Nadine , Scavarda Didier 
Published: March 2018

The embryological development of the central nervous system takes place during the neurulation process, which includes primary and secondary neurulation. A new form of dysraphism, named junctional neural tube defect (JNTD), was recently reported, with only 4 cases described in the literature. The authors report a fifth case of JNTD.This 5-year-old boy, who had been operated on during his 1st month of life for a uretero-rectal fistula, was referred for evaluation of possible spinal dysraphism. He had urinary incontinence, clubfeet, and a history of delayed walking ability. MRI showed a spinal cord divided in two, with an upper segment ending at the T-11 level and a lower segment at the L5–S1 level, with a thickened filum terminale.The JNTDs represent a recently classified dysraphism caused by an error during junctional neurulation. The authors suggest that their patient should be included in this category as the fifth case reported in the literature and note that this would be the first reported case of JNTD in association with a lipomatous filum terminale.
The Next Generation Virgo Cluster Survey (NGVS). XVIII. Measurement and Calibration of Surface Brightness Fluctuation Distances for Bright Galaxies in Virgo (and Beyond)
Authors: Cantiello Michele , Blakeslee John P. , Ferrarese Laura , Côté Patrick , Roediger Joel C. , Raimondo Gabriella , Peng Eric W. , Gwyn Stephen , Durrell Patrick R. , Cuillandre Jean-Charles 
Published: March 2018

Abstract
We describe a program to measure surface brightness fluctuation (SBF) distances to galaxies observed in the Next Generation Virgo Cluster Survey (NGVS), a photometric imaging survey covering 104 deg2 of the Virgo cluster in the u*, g, i, and z bandpasses with the Canada–France–Hawaii Telescope. We describe the selection of the sample galaxies, the procedures for measuring the apparent i-band SBF magnitude

, and the calibration of the absolute

as a function of observed stellar population properties. The multiband NGVS data set provides multiple options for calibrating the SBF distances, and we explore various calibrations involving individual color indices as well as combinations of two different colors. Within the color range of the present sample, the two-color calibrations do not significantly improve the scatter with respect to wide-baseline, single-color calibrations involving u*. We adopt the

calibration as a reference for the present galaxy sample, with an observed scatter of 0.11 mag. For a few cases that lack good u* photometry, we use an alternative relation based on a combination of

and

colors, with only a slightly larger observed scatter of 0.12 mag. The agreement of our measurements with the best existing distance estimates provides confidence that our measurements are accurate. We present a preliminary catalog of distances for 89 galaxies brighter than B

T
≈ 13.0 mag within the survey footprint, including members of the background M and W Clouds at roughly twice the distance of the main body of the Virgo cluster. The extension of the present work to fainter and bluer galaxies is in progress.
Visible Near-infrared Spectral Evolution of Irradiated Mixed Ices and Application to Kuiper Belt Objects and Jupiter Trojans
Authors: Poston Michael J. , Mahjoub Ahmed , Ehlmann Bethany L. , Blacksberg Jordana , Brown Michael E. , Carlson Robert W. , Eiler John M. , Hand Kevin P. , Hodyss Robert , Wong Ian 
Published: March 2018

Abstract
Understanding the history of Kuiper Belt Objects and Jupiter Trojans will help to constrain models of solar system formation and dynamical evolution. Laboratory simulations of a possible thermal and irradiation history of these bodies were conducted on ice mixtures while monitoring their spectral properties. These simulations tested the hypothesis that the presence or absence of sulfur explains the two distinct visible near-infrared spectral groups observed in each population and that Trojans and KBOs share a common formation location. Mixed ices consisting of water, methanol, and ammonia, in mixtures both with and without hydrogen sulfide, were deposited and irradiated with 10 keV electrons. Deposition and initial irradiation were performed at 50 K to simulate formation at 20 au in the early solar system, then heated to Trojan-like temperatures and irradiated further. Finally, irradiation was concluded and resulting samples were observed during heating to room temperature. Results indicated that the presence of sulfur resulted in steeper spectral slopes. Heating through the 140–200 K range decreased the slopes and total reflectance for both mixtures. In addition, absorption features at 410, 620, and 900 nm appeared under irradiation, but only in the H2S-containing mixture. These features were lost with heating once irradiation was concluded. While the results reported here are consistent with the hypothesis, additional work is needed to address uncertainties and to simulate conditions not included in the present work.
Asteroseismic Investigations of the Binary System HD 176465
Authors: Gai Ning , Basu Sarbani , Tang Yanke 
Published: March 2018

Abstract
HD 176465 is a binary system for which both components are solar-like pulsators and oscillation frequencies were observed by the Kepler mission. In this paper, we have modeled the asteroseismic and spectroscopic data of the stars, and have determined their convection-zone helium abundances using the signatures left by the He ii ionization zone on the mode frequencies. As expected, we find that the components of the binary are of the same age within uncertainties (3.087 ± 0.580 Gyr and 3.569 ± 0.912 Gyr); they also have the same initial helium abundance (Y
init = 0.253 ± 0.006 and 0.254 ± 0.008). Their current metallicity ([Fe/H] = −0.275 ± 0.04 and −0.285 ± 0.04) is also the same within errors. Fits to the signature of the He ii acoustic glitch yield current helium abundances of Y
A = 0.224 ± 0.006 and Y
B = 0.233 ± 0.008 for the two components. Analyzing the complete ensemble of models generated for this investigation, we find that both the amplitude and acoustic depth of the glitch signature arising from the second helium ionization zone and the base of the convection zone (CZ) are functions of mass. We show that the acoustic depths of these glitches are positively correlated with each other. The analysis can help us to detect the internal structure and constrain the chemical compositions.
Coronal Proerties of the Seyfert 1 Galaxy 3C 120 with NuSTAR
Authors: Rani Priyanka , Stalin C. S. 
Published: March 2018

Abstract
We present a measurement of the cut-off energy, a proxy for the temperature of the corona in the nuclear continuum of the Seyfert 1 galaxy 3C 120 using ∼120 ks of observation from NuSTAR. The quality broadband spectrum from 3–79 keV enabled us to measure the Compton reflection component (R) and to constrain the temperature of the coronal plasma. Fitting one of the advanced Comptonization models, compPS, to the observed broadband spectrum, we derived the kinetic temperature of the electrons in the corona to be kT

e
= 25 ± 2 keV with a Compton y parameter of y = 2.2 ± 0.1 for a slab geometry and

keV with a y of

assuming a spherical geometry. We noticed excess emission from ∼10–35 keV arising due to Compton reflection and a broad Fe Kα line at 6.43 keV with an equivalent width of 60 ± 5 eV. The variations in count rates in the soft (3–10 keV) band are found to be larger compared to the hard (10–79 keV) band, with mean fractional variability amplitudes of 0.065 ± 0.002 and 0.052 ± 0.003 for the soft and hard bands respectively. 3C 120 is known to have a strong jet; however, our results indicate that it is either dormant or its contribution, if any, to the X-ray emission is negligible during the epoch of NuSTAR observation.
Molecular Gas Reservoirs in Cluster Galaxies at z = 1.46
Authors: Hayashi Masao , Tadaki Ken-ichi , Kodama Tadayuki , Kohno Kotaro , Yamaguchi Yuki , Hatsukade Bunyo , Koyama Yusei , Shimakawa Rhythm , Tamura Yoichi , Suzuki Tomoko L. 
Published: March 2018

Abstract
We present molecular gas reservoirs of 18 galaxies associated with the XMMXCS J2215.9–1738 cluster at z = 1.46. From Band 7 and Band 3 data of the Atacama Large Millimeter/submillimeter Array, we detect dust continuum emission at 870 μm and the CO J = 2–1 emission line from 8 and 17 member galaxies, respectively, within a clustercentric radius of R
200. The molecular gas masses derived from the CO and/or dust continuum luminosities show that the fraction of molecular gas mass and the depletion timescale for the cluster galaxies are larger than expected from the scaling relations of molecular gas on stellar mass and offset from the main sequence of star-forming galaxies in general fields. The galaxies closer to the cluster center in terms of both projected position and accretion phase seem to show a larger deviation from the scaling relations. We speculate that the environment of the galaxy cluster helps feed the gas through inflow to the member galaxies and reduce the efficiency of star formation. The stacked Band 3 spectrum of 12 quiescent galaxies with M
stellar ∼ 1011
M
⊙ within 0.5R
200 shows no detection of a CO emission line, giving the upper limit of molecular gas mass and molecular gas fraction to be ≲1010
M
⊙ and ≲10%, respectively. Therefore, the massive galaxies in the cluster core quench the star formation activity while consuming most of the gas reservoirs.
Brightening X-Ray/Optical/Radio Emission of GW170817/SGRB 170817A: Evidence for an Electron–Positron Wind from the Central Engine?
Authors: Geng Jin-Jun , Dai Zi-Gao , Huang Yong-Feng , Wu Xue-Feng , Li Long-Biao , Li Bing , Meng Yan-Zhi 
Published: March 2018

Abstract
Recent follow-up observations of the binary neutron star (NS) merging event GW170817/SGRB 170817A reveal that its X-ray/optical/radio emissions are brightening continuously up to ∼100 days post-merger. This late-time brightening is unexpected from the kilonova model or the off-axis top-hat jet model for gamma-ray burst (SGRB) afterglows. In this Letter, by assuming that the merger remnant is a long-lived NS, we propose that the interaction between an electron–positron-pair (e
+
e
−) wind from the central NS and the jet could produce a long-lived reverse shock, from which a new emission component would rise and can interpret current observations well. The magnetic-field-induced ellipticity of the NS is taken to be 4 × 10−5 in our modeling, so that the braking of the NS is mainly through the gravitational wave (GW) radiation rather than the magnetic dipole radiation, and the emission luminosity at early times would not exceed the observational limits. In our scenario, because the peak time of the brightening is roughly equal to the spin-down timescale of the NS, the accurate peak time may help constrain the ellipticity of the remnant NS. We suggest that radio polarization observations of the brightening would help to distinguish our scenario from other scenarios. Future observations on a large sample of short gamma-ray burst afterglows or detections of GW signals from merger remnants would test our scenario.
FIIND: Ferret Interactive Integrated Neurodevelopment Atlas
Authors: Toro Roberto , Bakker Rembrandt , Delzescaux Thierry , Evans Alan , Tiesinga Paul 
Published: March 2018

The first days after birth in ferrets provide a privileged view of the development of a complex mammalian brain. Unlike mice, ferrets develop a rich pattern of deep neocortical folds and cortico- cortical connections. Unlike humans and other primates, whose brains are well differentiated and folded at birth, ferrets are born with a very immature and completely smooth neocortex: folds, neocortical regionalisation and cortico-cortical connectivity develop in ferrets during the first postnatal days. After a period of fast neocortical expansion, during which brain volume increases by up to a factor of 4 in 2 weeks, the ferret brain reaches its adult volume at about 6 weeks of age. Ferrets could thus become a major animal model to investigate the neurobiological correlates of the phenomena observed in human neuroimaging. Many of these phenomena, such as the relationship between brain folding, cortico-cortical connectivity and neocortical regionalisation cannot be investigated in mice, but could be investigated in ferrets.
Our aim is to provide the research community with a detailed description of the development of a complex brain, necessary to better understand the nature of human neuroimaging data, create models of brain development, or analyse the relationship between multiple spatial scales. We have already started a project to constitute an open, collaborative atlas of ferret brain development, integrating multi-modal and multi-scale data. We have acquired data for 28 ferrets (4 animals per time point from P0 to adults), using high-resolution MRI and diffusion tensor imaging (DTI). We have developed an open-source pipeline to segment and produce – online – 3D reconstructions of brain MRI data.
We propose to process the brains of 16 of our specimens (from P0 to P16) using high-throughput 3D histology, staining for cytoarchitectonic landmarks, neuronal progenitors and neurogenesis. This would allow us to relate the MRI data that we have already acquired with multi-dimensional cell-scale information. Brains will be sectioned at 25 μm, stained, scanned at 0.25 μm of resolution, and processed for real-time multi-scale visualisation. We will extend our current web-platform to integrate an interactive multi-scale visualisation of the data. Using our combined expertise in computational neuroanatomy, multi-modal neuroimaging, neuroinformatics, and the development of inter-species atlases, we propose to build an open-source web platform to allow the collaborative, online, creation of atlases of the development of the ferret brain. The web platform will allow researchers to access and visualise interactively the MRI and histology data. It will also allow researchers to create collaborative, human curated, 3D segmentations of brain structures, as well as vectorial atlases. Our work will provide a first integrated atlas of ferret brain development, and the basis for an open platform for the creation of collaborative multi-modal, multi-scale, multi-species atlases.
La sinologie est un sport de combat
Authors: Fabre Clément 
Published: March 2018

En 1874, l’ancien missionnaire en Chine Paul Perny publie un pamphlet où il accuse d’imposture le marquis d’Hervey de Saint-Denys, professeur de chinois au Collège de France, ainsi que son prédécesseur Stanislas Julien. Son Charlatanisme littéraire dévoilé lui vaut finalement d’être condamné pour diffamation. La richesse de l’affaire, qui articule pratique des controverses savantes, lutte entre deux branches rivales de la sinologie et recours au levier de l’opinion publique, permet de retracer un siècle d’institutionnalisation conflictuelle de la sinologie française.
Quantifier pour réformer
Authors: Morel Stanislas 
Published: March 2018

L’article étudie le développement d’une administration scolaire spécialisée dans les statistiques aux États-Unis au début du xx e siècle. Il appréhende l’activité de ces spécialistes de l’administration scolaire à partir de leurs enquêtes sur le retard et le décrochage scolaires. Ces questionnements émergent dans le contexte de « l’ère progressiste » marqué par la professionnalisation et l’universitarisation de l’administration scolaire, les débats sur les inégalités sociales ou l’efficacité des institutions publiques. En saisissant le travail de ces spécialistes à travers leurs enquêtes, on contribue à une histoire sociale des statistiques scolaires, restituant les enjeux scientifiques, politiques et administratifs qui pèsent sur leur production. Par leur caractère précurseur, ces enquêtes ébauchent, dès les années 1900, des questionnements qui marqueront durablement la sociologie de l’éducation.
L’Observatory of European Institutions
Authors: Dehousse Renaud , Bendjaballah Selma , Michaud Geneviève , Rozenberg Olivier , Deloche-Gaudez Florence , Ciavarini Azzi Giuseppe , Costa Olivier , Lalande Romain 
Published: March 2018

Le Centre d’études européennes et de politique comparée (CEE) de Sciences Po développe depuis 2005 une étude de la procédure législative européenne. L’Observatory of European Institutions (OEI) 1 vise à mieux saisir les logiques politiques à l’œuvre dans le processus décisionnel de l’Union européenne entre 1996 et 2014. Le projet remplit plusieurs objectifs : il s’agit d’abord de comprendre le processus politique par la constitution d’une base de données d’une ampleur inédite. Pour chaque acte législatif adopté par l’Union européenne, une centaine de variables sur le processus de décision dans l’Union européenne et dans les systèmes politiques nationaux depuis 1996 sont collectées. Ensuite, le projet s’inscrit dans une démarche comparative. La base de données permet d’isoler des logiques politiques propres à chaque secteur de politique publique. À terme, ces analyses comparatives permettront de déterminer l’impact des grands changements politiques connus par l’Union européenne ces dernières décennies tels que les traités, les réformes procédurales, les crises économiques, et ce sur chaque secteur d’intervention de l’Union européenne. C’est en définitive l’Union européenne comme acteur de politique publique qui est appréhendée. Les données ont pu être collectées grâce à un financement de l’Agence nationale de la recherche (ANR) entre octobre 2012 et octobre 2015 2 .
Le consommateur camerounais face à la contrefaçon : une approche typologique
Authors: Ndangwa Lucien , Talla Fotsing Luther 
Published: March 2018

Cet article montre que les motivations des consommateurs des produits contrefaits sont variées. Les données recueillies auprès de 226 étudiants permettent d’identifier deux profils différents selon les motivations, attitudes et intentions de comportement envers la contrefaçon : les adeptes pragmatiques et les réfractaires idéalistes. Il s’en dégage également que les déterminants liés au produit constituent les principales raisons de la consommation de la contrefaçon pour les adeptes pragmatiques, notamment la rareté perçue des produits originaux, la qualité perçue et le prix perçu. Pour les réfractaires idéalistes par contre, le rejet de la contrefaçon est dû aux risques induits et à l’illégalité perçue. La réflexion débouche sur les propositions de solutions contre ce fléau.
Les systèmes de communication Internet des entreprises du CAC40 : une étude longitudinale (2007-2015)
Authors: Vitari Claudio , Bourdon Isabelle , Rodhain Florence 
Published: March 2018

Les entreprises sont confrontées à des pressions les poussant à intégrer les principes de la Responsabilité Sociale de l’Entreprise (RSE). Notre travail vise à enrichir la recherche dans ce domaine à travers une étude sur les systèmes de communication Internet sur la RSE et les facteurs les influençant. Nous proposons un modèle de recherche afin d’identifier ces facteurs. L’étude longitudinale menée sur toutes les entreprises du CAC40 montre une tendance à la standardisation de ces systèmes et à la prépondérance d’une « communication » à sens unique, caractérisée par l’absence de technologies du Web 2.0.
A Genetic Algorithm Based and Subtree Restricted Routing Algorithm in Wireless Sensor Networks
Authors: Huang Zhi 
Published: March 2018

The GA(genetic algorithms) was applied to find routing trees with minimal maximal sensor load thus extend network lifetime in wireless sensor networks. However, the existing algorithmlimits search space of GA to avoid generating cycles by dividing sensors into layers and stipulating that a sensor only can select a sensor in its lower layer as its new parent. In this paper, we have found that how cycles are generated during GA operations, and proposed a solution based on subtree to avoid generating cycles during GA operations.The solution only requires a sensor not to change its parent to a sensor in the subtree with it as the root. And layers are no longer considered. As a result, GA has more search space and GA operations can be performed more freely. Thus more optimal routing trees are obtained and network lifetime is extended. The experiment shows that our proposed algorithm extend network lifetime notably.
Distributed Power Control Algorithm in Orthogonal Frequency Division Multiple Cognitive Radio Systems for Fading Channel
Authors: Chen Lingling , Qi Feng , Gao Xingquan , Wang Huipeng , Liang Jiwen 
Published: March 2018

In order to guarantee the quality of service (QoS) for primary users (PUs) and secondary users (SUs) in fading channel, a distributed power control algorithm is proposed based on convex optimization theory in underlay OFDM cognitive radio networks (CRNs). Our purpose obtains the maximum transmit data rate of each SU at all subcarriers under three constraints of the maximum allowable transmission power, the minimum signal to interference plus ratio (SINR) of each SU and the maximum allowable interference generated from SUs to PU at each subcarrier. Simulation results show that the performance of the proposed algorithms (m2) are superior to the geometric programming algorithm (m1) in fading channel environment.