bluuebunny/crossref_metadata_2025 huggingface dataset:
Fabrication and Characterization of Highly Sensitive Acetone Chemical Sensor Based on ZnO Nanoballs
Authors: Zhou Qu , Hong ChangXiang , Yao Yao , Ibrahim Ahmed , Xu Lingna , Kumar Rajesh , Talballa Sumaia , Kim S. , Umar Ahmad
Published: July 2017

Highly sensitive acetone chemical sensor was fabricated using ZnO nanoballs modified silver electrode. A low temperature, facile, template-free hydrothermal technique was adopted to synthesize the ZnO nanoballs with an average diameter of 80 ± 10 nm. The XRD and UV-Vis. studies confirmed the excellent crystallinity and optical properties of the synthesized ZnO nanoballs. The electrochemical sensing performance of the ZnO nanoballs modified AgE towards the detection of acetone was executed by simple current–voltage (I–V) characteristics. The sensitivity value of ∼472.33 μA·mM−1·cm−2 and linear dynamic range (LDR) of 0.5 mM–3.0 mM with a correlation coefficient (R2) of 0.97064 were obtained from the calibration graph. Experimental limit of detection (LOD) for ZnO nanoballs modified AgE was found to be 0.5 mM.
Fruit and Juice Epigenetic Signatures Are Associated with Independent Immunoregulatory Pathways
Authors: Nicodemus-Johnson Jessie , Sinnott Robert
Published: July 2017

Epidemiological evidence strongly suggests that fruit consumption promotes many health benefits. Despite the general consensus that fruit and juice are nutritionally similar, epidemiological results for juice consumption are conflicting. Our objective was to use DNA methylation marks to characterize fruit and juice epigenetic signatures within PBMCs and identify shared and independent signatures associated with these groups. Genome-wide DNA methylation marks (Illumina Human Methylation 450k chip) for 2,148 individuals that participated in the Framingham Offspring exam 8 were analyzed for correlations between fruit or juice consumption using standard linear regression. CpG sites with low P-values (P < 0.01) were characterized using Gene Set Enrichment Analysis (GSEA), Ingenuity Pathway Analysis (IPA), and experimentally derived Functional element Overlap analysis of ReGions from EWAS (eFORGE). Fruit and juice-specific low P-value epigenetic signatures were largely independent. Genes near the fruit-specific epigenetic signature were enriched among pathways associated with antigen presentation and chromosome or telomere maintenance, while the juice-specific epigenetic signature was enriched for proinflammatory pathways. IPA and eFORGE analyses implicate fruit and juice-specific epigenetic signatures in the modulation of macrophage (fruit) and B or T cell (juice) activities. These data suggest a role for epigenetic regulation in fruit and juice-specific health benefits and demonstrate independent associations with distinct immune functions and cell types, suggesting that these groups may not confer the same health benefits. Identification of such differences between foods is the first step toward personalized nutrition and ultimately the improvement of human health and longevity.
Increases in Variation of Barbell Kinematics Are Observed with Increasing Intensity in a Graded Back Squat Test
Authors: Carroll Kevin , Sato Kimitake , Bazyler Caleb , Triplett N. , Stone Michael
Published: July 2017

The purpose of the current study was two-fold: (1) To examine the variation in velocity and power with increasing intensity in the back squat among subjects; and (2) To explore individual subject characteristics as possible explanations for variations of velocity in the back squat. Fourteen recreationally trained male subjects with experience in the back squat agreed to participate in the study (age = 25.0 ± 2.6 years, height = 178.9 ± 8.1 cm, body mass = 88.2 ± 15.8 kg). One-repetition maximums (1RM) were performed for each subject on force platforms with four linear position transducers attached to the barbell. The 1RM assessment was immediately preceded by warm-up sets at 65%, 75%, 85%, and 95% of estimated 1RM for 5, 3, 2, and 1 repetitions, respectively. Mean concentric velocity (MCV) and mean power were recorded for each intensity condition and were analyzed using Pearson correlation to determine the relationship between each variable and relative intensity (%1RM). Statistically significant negative relationships existed between %1RM and MCV (r = −0.892) and mean power (r = −0.604). Between-subject coefficient of variation tended to increase as %1RM increased for both MCV and mean power. These results suggest that MCV is superior to mean power as an indicator of relative intensity in the back squat. Additionally, the between-subject variation observed at higher intensities for MCV and mean power support the use of velocity ranges by strength and conditioning coaches.
PROJECT DELAY: KEY ELECTRICAL CONSTRUCTION FACTORS IN HONG KONG
Authors: CHIU Betty W. Y. , LAI Joseph H. K.
Published: July 2017

The price of construction project delays is too substantial to pay. Electrical construction is a critical activity influ­encing project completion, but research on its delay factors was limited. Aimed at contributing knowledge to this niche area, a study was conducted in Hong Kong. 56 delay factors, in 10 groups, were found with electrical construction. Processing the data of a survey on 64 consultants and 68 contractors revealed “insufficient labour”, “late decision making of client” and “insuf­ficient electrical contractor” as the top delay factors. Strong agreements on the importance rankings of the delay factors existed between the consultant and contractor groups, and the principal factor components were “incompetent project team members”, “lack of skillful labour” and “poor on-site planning”. Besides discussing the common problems underlying the delay factors, recommendations were made for avoiding the problems. An understanding of the delay factors would help construction stake­holders in taking proactive measures to prevent project delay. The approach of the study can serve as reference for similar, future research in construction management.
FOSTERING THE EFFECTIVE USAGE OF RISK MANAGEMENT IN CONSTRUCTION
Authors: SERPELL Alfredo , FERRADA Ximena , RUBIO Norma Larissa
Published: July 2017

The effective management of risk is critical for construction projects. However, research findings show that risk management is either not used or done ineffectively in domestic construction projects. One of the primary reasons for this appears to be the lack of risk management (RM) capabilities and knowledge. A study aimed at developing a system for supporting the effective use of RM is presented. The system has been designed so as to provide the required functionality to assist owners and contractors to develop their capabilities to manage risk effectively, including: a) to assess the existing RM organizational maturity and to report on the existing gaps, b) to propose recommendations for improving the organizational RM capabilities in the light of the detected gaps, and c) to help companies with the im­plementation and improvement of RM within the organization. The system prototype has been successfully applied in several companies that served as initial case studies. It is anticipated that the system will assist clients and contractors to advance effective risk management capabilities and to improve their project risk management performance in the me­dium range. The system can also be applied in other countries that face the same RM difficulties.
CRITICAL FACTORS OF THE APPLICATION OF NANOTECHNOLOGY IN CONSTRUCTION INDUSTRY BY USING ANP TECHNIQUE UNDER FUZZY INTUITIONISTIC ENVIRONMENT
Authors: SHARIATI Shahram , ABEDI Masoumeh , SAEDI Alieh , YAZDANI-CHAMZINI Abdolreza , TAMOŠAITIENĖ Jolanta , ŠAPARAUSKAS Jonas , STUPAK Stanislav
Published: July 2017

Nanotechnology plays a significant role in construction industry. The construction industry has been employed nanomaterials to improve the performance of construction components and the safety of the structure and to reduce the energy consuming and the cost of maintenance. In other words, nanotechnology has a substantial impact on the construc­tion industry. Therefore, it is necessary to identify and evaluate the critical factors of the application of nanotechnology in construction in order to concentrate on the most critical factors. However, several techniques have been developed to prioritize the evaluation criteria. Analytical network process (ANP) technique, a branch of multi criteria decision mak­ing (MCDM) methods, is a powerful tool to rank a limited number of criteria. This technique takes into account both tangible and intangible criteria in the process of formulation of a decision making problem. This method is capable of handling all types of independence and dependence relationships. On the other hand, intuitionistic fuzzy set (IFS) is a well-known technique in considering the inherent uncertainty involved in the process of modelling a decision making problem. In this paper, a new model based on the IFS and ANP technique is proposed to evaluate the critical factors of the application of nanotechnology in the construction industry. The results demonstrate that the proposed model has a high potential for taking into account the uncertainty in the form of a three dimension function, including membership, non-membership, and non-determinacy.
A Multiwavelength Study of the Segue 3 Cluster
Authors: Hughes Joanne , Lacy Brianna , Sakari Charli , Wallerstein George , Davis Christoper Evan , Schiefelbein Spencer , Corrin Olivia , Joudi Hanah , Le Donna , Haynes Rose Marie
Published: July 2017

We present new SDSS and Washington photometry of the young outer-halo stellar system Segue 3. Combined with archival VI-observations, our most consistent results yield 

,

,

, and

, with a high binary fraction of 0.39 ± 0.05 derived using the Padova models. We confirm that mass-segregation has occurred, supporting the hypothesis that this cluster is being tidally disrupted. A three-parameter King model yields a cluster radius of

, a core radius of

, and a tidal radius of

. A comparison of Padova and Dartmouth model-grids indicates that the cluster is not significantly α-enhanced, with a mean

dex, and a population age of only 2.6 ± 0.4 Gyr. We rule out a statistically significant age spread at the main-sequence turnoff because of a narrow subgiant branch, and discuss the role of stellar rotation and cluster age, using Dartmouth and Geneva models: approximately 70% of the Seg 3 stars at or below the main-sequence turnoff have enhanced rotation. Our results for Segue 3 indicate that it is younger and more metal-rich than all previous studies have reported to date. From colors involving Washington C and SDSS-u filters, we identify several giants and a possible blue straggler for future follow-up spectroscopic studies, and we produce spectral energy distributions of previously known members and potential Segue 3 sources with Washington (CT
1), Sloan (ugri), and VI-filters. Segue 3 shares the characteristics of unusual stellar systems that have likely been stripped from external dwarf galaxies as they are being accreted by the Milky Way, or that have been formed during such an event. Its youth, metallicity, and location are all inconsistent with Segue 3 being a cluster native to the Milky Way.
Core or Cusps: The Central Dark Matter Profile of a Strong Lensing Cluster with a Bright Central Image at Redshift 1
Authors: Collett Thomas E. , Buckley-Geer Elizabeth , Lin Huan , Bacon David , Nichol Robert C. , Nord Brian , Morice-Atkinson Xan , Amara Adam , Birrer Simon , Kuropatkin Nikolay , More Anupreeta , Papovich Casey , Romer Kathy K. , Tessore Nicolas , Abbott Tim M. C. , Allam Sahar , Annis James , Benoit-Lévy Aurlien , Brooks David , Burke David L. , Carrasco Kind Matias , Castander Francisco Javier J. , D’Andrea Chris B. , da Costa Luiz N. , Desai Shantanu , Diehl H. Thomas , Doel Peter , Eifler Tim F. , Flaugher Brenna , Frieman Josh , Gerdes David W. , Goldstein Daniel A. , Gruen Daniel , Gschwend Julia , Gutierrez Gaston , James David J. , Kuehn Kyler , Kuhlmann Steve , Lahav Ofer , Li Ting S. , Lima Marcos , Maia Marcio A. G. , March Marisa , Marshall Jennifer L. , Martini Paul , Melchior Peter , Miquel Ramon , Plazas Andrs A. , Rykoff Eli S. , Sanchez Eusebio , Scarpine Vic , Schindler Rafe , Schubnell Michael , Sevilla-Noarbe Ignacio , Smith Mathew , Sobreira Flavia , Suchyta Eric , Swanson Molly E. C. , Tarle Gregory , Tucker Douglas L. , Walker Alistair R.
Published: July 2017

We report on SPT-CLJ2011-5228, a giant system of arcs created by a cluster at z = 1.06. The arc system is notable for the presence of a bright central image. The source is a Lyman break galaxy at z

s
= 2.39 and the mass enclosed within the Einstein ring of radius 14 arcsec is

. We perform a full reconstruction of the light profile of the lensed images to precisely infer the parameters of the mass distribution. The brightness of the central image demands that the central total density profile of the lens be shallow. By fitting the dark matter as a generalized Navarro–Frenk–White profile—with a free parameter for the inner density slope—we find that the break radius is

kpc, and that the inner density falls with radius to the power −0.38 ± 0.04 at 68% confidence. Such a shallow profile is in strong tension with our understanding of relaxed cold dark matter halos; dark matter-only simulations predict that the inner density should fall as

. The tension can be alleviated if this cluster is in fact a merger; a two-halo model can also reconstruct the data, with both clumps (density varying as

and

) much more consistent with predictions from dark matter-only simulations. At the resolution of our Dark Energy Survey imaging, we are unable to choose between these two models, but we make predictions for forthcoming Hubble Space Telescope imaging that will decisively distinguish between them.
The Validity of 21 cm Spin Temperature as a Kinetic Temperature Indicator in Atomic and Molecular Gas
Authors: Shaw Gargi , Ferland G. J. , Hubeny I.
Published: July 2017

The gas kinetic temperature (T

K
) of various interstellar environments is often inferred from observations that can deduce level populations of atoms, ions, or molecules using spectral line observations; H i 21 cm is perhaps the most widely used, and has a long history. Usually the H i 21 cm line is assumed to be in thermal equilibrium and the populations are given by the Boltzmann distribution. A variety of processes, many involving Lyα, can affect the 21 cm line. Here we show how this is treated in the spectral simulation code Cloudy, and present numerical simulations of environments where this temperature indicator is used, with a detailed treatment of the physical processes that determine level populations within H0. We discuss situations where this temperature indicator traces T

K
, cases where it fails, as well as the effects of Lyα pumping on the 21 cm spin temperature. We also show that the Lyα excitation temperature rarely traces the gas kinetic temperature.
Study of the Vertical Magnetic Field in Face-on Galaxies Using Faraday Tomography
Authors: Ideguchi Shinsuke , Tashiro Yuichi , Akahori Takuya , Takahashi Keitaro , Ryu Dongsu
Published: July 2017

Faraday tomography allows astronomers to probe the distribution of the magnetic field along the line of sight (LOS), but that can be achieved only after the Faraday spectrum is interpreted. However, the interpretation is not straightforward, mainly because the Faraday spectrum is complicated due to a turbulent magnetic field; it ruins the one-to-one relation between the Faraday depth and the physical depth, and appears as many small-scale features in the Faraday spectrum. In this paper, by employing “simple toy models” for the magnetic field, we describe numerically as well as analytically the characteristic properties of the Faraday spectrum. We show that the Faraday spectrum along “multiple LOSs” can be used to extract the global properties of the magnetic field. Specifically, considering face-on spiral galaxies and modeling turbulent magnetic field as a random field with a single coherence length, we numerically calculate the Faraday spectrum along a number of LOSs and its shape-characterizing parameters, that is, the moments. When multiple LOSs cover a region of ≳(10 coherence length)2, the shape of the Faraday spectrum becomes smooth and the shape-characterizing parameters are well specified. With the Faraday spectrum constructed as a sum of Gaussian functions with different means and variances, we analytically show that the parameters are expressed in terms of the regular and turbulent components of the LOS magnetic field and the coherence length. We also consider the turbulent magnetic field modeled with a power-law spectrum, and study how the magnetic field is revealed in the Faraday spectrum. Our work suggests a way to obtain information on the magnetic field from a Faraday tomography study.
The Splashback Radius of Halos from Particle Dynamics. II. Dependence on Mass, Accretion Rate, Redshift, and Cosmology
Authors: Diemer Benedikt , Mansfield Philip , Kravtsov Andrey V. , More Surhud
Published: July 2017

The splashback radius R
sp, the apocentric radius of particles on their first orbit after falling into a dark matter halo, has recently been suggested to be a physically motivated halo boundary that separates accreting from orbiting material. Using the Sparta code presented in Paper I, we analyze the orbits of billions of particles in cosmological simulations of structure formation and measure R
sp for a large sample of halos that span a mass range from dwarf galaxy to massive cluster halos, reach redshift 8, and include WMAP, Planck, and self-similar cosmologies. We analyze the dependence of R
sp/R
200m and M
sp/M
200m on the mass accretion rate Γ, halo mass, redshift, and cosmology. The scatter in these relations varies between 0.02 and 0.1 dex. While we confirm the known trend that R
sp/R
200m decreases with Γ, the relationships turn out to be more complex than previously thought, demonstrating that R
sp is an independent definition of the halo boundary that cannot trivially be reconstructed from spherical overdensity definitions. We present fitting functions for R
sp/R
200m and M
sp/M
200m as a function of accretion rate, peak height, and redshift, achieving an accuracy of 5% or better everywhere in the parameter space explored. We discuss the physical meaning of the distribution of particle apocenters and show that the previously proposed definition of R
sp as the radius of the steepest logarithmic density slope encloses roughly three-quarters of the apocenters. Finally, we conclude that no analytical model presented thus far can fully explain our results.
A Three-dimensional View of Turbulence: Constraints on Turbulent Motions in the HD 163296 Protoplanetary Disk Using DCO+
Authors: Flaherty Kevin M. , Hughes A. Meredith , Rose Sanaea C. , Simon Jacob B. , Qi Chunhua , Andrews Sean M. , Kóspál Ágnes , Wilner David J. , Chiang Eugene , Armitage Philip J. , Bai Xue-ning
Published: July 2017

Gas kinematics are an important part of the planet formation process. Turbulence influences planetesimal growth and migration from the scale of submicron dust grains through gas-giant planets. Radio observations of resolved molecular line emission can directly measure this non-thermal motion and, taking advantage of the layered chemical structure of disks, different molecular lines can be combined to map the turbulence throughout the vertical extent of a protoplanetary disk. Here we present ALMA observations of three molecules (DCO+(3-2), C18O(2-1) and CO(2-1)) from the disk around HD 163296. We are able to place stringent upper limits (v
turb < 0.06c

s
, <0.05c

s
, and <0.04c

s
for CO(2-1), C18O(2-1), and DCO+(3-2) respectively), corresponding to α ≲ 3 × 10−3, similar to our prior limit derived from CO(3-2). This indicates that there is little turbulence throughout the vertical extent of the disk, contrary to theoretical predictions based on the magnetorotational instability and gravitoturbulence. In modeling the DCO+ emission, we also find that it is confined to three concentric rings at 65.7 ± 0.9 au,

, and 259 ± 1 au, indicative of a complex chemical environment.
LSPM J1314+1320: An Oversized Magnetic Star with Constraints on the Radio Emission Mechanism
Authors: MacDonald James , Mullan D. J.
Published: July 2017

LSPM J1314+1320 (=NLTT 33370) is a binary star system consisting of two nearly identical pre-main-sequence stars of spectral type M7. The system is remarkable among ultracool dwarfs for being the most luminous radio emitter over the widest frequency range. Masses and luminosities are at first sight consistent with the system being coeval at age ∼80 Myr according to standard (nonmagnetic) evolutionary models. However, these models predict an average effective temperature of ∼2950 K, which is 180 K hotter than the empirical value. Thus, the empirical radii are oversized relative to the standard models by ≈13%. We demonstrate that magnetic stellar models can quantitatively account for the oversizing. As a check on our models, we note that the radio emission limits the surface magnetic field strengths: the limits depend on identifying the radio emission mechanism. We find that the field strengths required by our magnetic models are too strong to be consistent with gyrosynchrotron emission but are consistent with electron cyclotron maser emission.
VICS82: The VISTA–CFHT Stripe 82 Near-infrared Survey
Authors: Geach J. E. , Lin Y.-T. , Makler M. , Kneib J.-P. , Ross N. P. , Wang W.-H. , Hsieh B.-C. , Leauthaud A. , Bundy K. , McCracken H. J. , Comparat J. , Caminha G. B. , Hudelot P. , Lin L. , Waerbeke L. Van , Pereira M. E. S. , Mast D.
Published: July 2017

We present the VISTA–CFHT Stripe 82 (VICS82) survey: a near-infrared (J+K

s
) survey covering 150 square degrees of the Sloan Digital Sky Survey (SDSS) equatorial Stripe 82 to an average depth of J = 21.9 AB mag and K

s
= 21.4 AB mag (80% completeness limits; 5σ point-source depths are approximately 0.5 mag brighter). VICS82 contributes to the growing legacy of multiwavelength data in the Stripe 82 footprint. The addition of near-infrared photometry to the existing SDSS Stripe 82 coadd ugriz photometry reduces the scatter in stellar mass estimates to

dex for galaxies with

at

, and offers improvement compared to optical-only estimates out to

, with stellar masses constrained within a factor of approximately 2.5. When combined with other multiwavelength imaging of the Stripe, including moderate-to-deep ultraviolet (GALEX), optical and mid-infrared (Spitzer-IRAC) coverage, as well as tens of thousands of spectroscopic redshifts, VICS82 gives access to approximately 0.5 Gpc3 of comoving volume. Some of the main science drivers of VICS82 include (a) measuring the stellar mass function of

galaxies out to

; (b) detecting intermediate-redshift quasars at

(c) measuring the stellar mass function and baryon census of clusters of galaxies, and (d) performing cross-correlation experiments of cosmic microwave background lensing in the optical/near-infrared that link stellar mass to large-scale dark matter structure. Here we define and describe the survey, highlight some early science results, and present the first public data release, which includes an SDSS-matched catalog as well as the calibrated pixel data themselves.
The Splashback Radius of Halos from Particle Dynamics. I. The SPARTA Algorithm
Authors: Diemer Benedikt
Published: July 2017

Motivated by the recent proposal of the splashback radius as a physical boundary of dark-matter halos, we present a parallel computer code for Subhalo and PARticle Trajectory Analysis (Sparta). The code analyzes the orbits of all simulation particles in all host halos, billions of orbits in the case of typical cosmological N-body simulations. Within this general framework, we develop an algorithm that accurately extracts the location of the first apocenter of particles after infall into a halo, or splashback. We define the splashback radius of a halo as the smoothed average of the apocenter radii of individual particles. This definition allows us to reliably measure the splashback radii of 95% of host halos above a resolution limit of 1000 particles. We show that, on average, the splashback radius and mass are converged to better than 5% accuracy with respect to mass resolution, snapshot spacing, and all free parameters of the method.
On the Evolution of the Central Density of Quiescent Galaxies
Authors: Tacchella Sandro , Carollo C. Marcella , Faber S. M. , Cibinel Anna , Dekel Avishai , Koo David C. , Renzini Alvio , Woo Joanna
Published: July 2017

We investigate the origin of the evolution of the population-averaged central stellar mass density (Σ1) of quiescent galaxies (QGs) by probing the relation between stellar age and Σ1 at z ∼ 0. We use the Zurich ENvironmental Study (ZENS), which is a survey of galaxy groups with a large fraction of satellite galaxies. QGs shape a narrow locus in the Σ1–M
⋆ plane, which we refer to as Σ1 ridgeline. Colors of (B − I) and (I − J) are used to divide QGs into three age categories: young (<2 Gyr), intermediate (2–4 Gyr), and old (>4 Gyr). At fixed stellar mass, old QGs on the Σ1 ridgeline have higher Σ1 than young QGs. This shows that galaxies landing on the Σ1 ridgeline at later epochs arrive with lower Σ1, which drives the zeropoint of the ridgeline down with time. We compare the present-day zeropoint of the oldest population at z = 0 with the zeropoint of the quiescent population 4 Gyr back in time, at z = 0.37. These zeropoints are identical, showing that the intrinsic evolution of individual galaxies after they arrive on the Σ1 ridgeline must be negligible, or must evolve parallel to the ridgeline during this interval. The observed evolution of the global zeropoint of 0.07 dex over the last 4 Gyr is thus largely due to the continuous addition of newly quenched galaxies with lower Σ1 at later times (“progenitor bias”). While these results refer to the satellite-rich ZENS sample as a whole, our work suggests a similar age–Σ1 trend for central galaxies.
Anomalous Distributions of Primary Cosmic Rays as Evidence for Time-dependent Particle Acceleration in Supernova Remnants
Authors: Zhang Yiran , Liu Siming , Yuan Qiang
Published: July 2017

Recent precise measurements of cosmic-ray (CR) spectra show that the energy distribution of protons is softer than those of heavier nuclei, and there are spectral hardenings for all nuclear compositions above ∼200 GV. Models proposed for these anomalies generally assume steady-state solutions of the particle acceleration process. We show that if the diffusion coefficient has a weak dependence on the particle rigidity near shock fronts of supernova remnants (SNRs), time-dependent solutions of the linear diffusive shock acceleration at two stages of SNR evolution can naturally account for these anomalies. The high-energy component of CRs is dominated by acceleration in the free expansion and adiabatic phases with enriched heavy elements and a high shock speed. The low-energy component may be attributed to acceleration by slow shocks propagating in dense molecular clouds with low metallicity in the radiative phase. Instead of a single power-law distribution, the spectra of time-dependent solutions soften gradually with the increase of energy, which may be responsible for the “knee” of CRs.
Encadrement et leadership
Authors: Lapointe Pierre , Archambault Jean
Published: July 2017

De nombreux acteurs dans le domaine de l’éducation insistent sur l’importance que les directions d’établissement doivent accorder à l’encadrement de l’activité pédagogique. Dans cette perspective, ce chapitre examine l’allocation du temps de travail et la fréquence des interventions des directions par rapport à la gestion éducative et à la gestion administrative de leur établissement. Les données proviennent d’une enquête menée auprès de 138 directions et 421 enseignantes et enseignants dans des écoles primaires du Québec. Les directions rapportent avoir consacré autant de temps à la gestion administrative qu’à la gestion éducative de leur établissement. Par rapport à cinq domaines de la gestion éducative, les directions interviennent plus dans les domaines visant à assurer la collaboration des parents et le soutien aux élèves à risque que dans ceux liés à la supervision des enseignants et au rendement des élèves. Cette analyse fournit des éléments de discussion sur l’engagement des directions dans la gestion éducative de leur établissement.
Encadrement et leadership
Authors: Perrenoud Olivier
Published: July 2017

Les changements intervenus dans le paysage de la gouvernance des systèmes et des institutions de formation donnent à la fonction de cadre intermédiaire un nouveau relief et de nouveaux champs d’expression. À partir d’une étude réalisée auprès d’enseignants 1 , nous faisons apparaître comment des cadres de proximité habitent leurs activités de doyens en charge de l’encadrement d’équipes pédagogiques. Certains gestes participant au pilotage des équipes sont mis en lumière avant d’interroger la position même du cadre de proximité qui peut être considéré, soit comme un animateur d’équipe en recherche de légitimité, soit comme un leader pédagogique avec des responsabilités étendues. Les réflexions apportées permettent de cerner plus précisé ment une fonction en émergence qui est celle de cadre intermédiaire, entre le directeur d’un établissement et les enseignants qui y travaillent.
Encadrement et leadership
Authors: Marcel Jean-François
Published: July 2017

L’évolution des établissements scolaires s’est traduite, entre autres transformations, par l’émergence d’un espace intermédiaire entre la sphère de la direction et celles des équipes pédagogiques. Au sein de cet espace est apparue une figure nouvelle, aux fonctions peu et mal définies, le coordonnateur d’équipe. Ce texte étudie les stratégies mobilisées par les différents groupes d’acteurs (direction, équipes et coordonnateurs) engagés dans un rapport de forces pour investir cet espace intermédiaire et pour définir les règles régissant les fonctions du coordonnateur. Il s’appuie sur le cadre théorique de l’analyse stratégique et sur une enquête conduite auprès des trois catégories d’acteurs concernés dans trois établissements de l’enseignement agricole public français.
Encadrement et leadership
Authors: Piot Thierry
Published: July 2017

Les environnements sociaux mouvants ont complexifié la gestion des établissements d’enseignement et de formation : la fonction de coordination pédagogique doit prendre en compte une tension entre les standards prescrits « par le haut » et les logiques d’individualisation « par le bas ». Nous avons analysé l’activité d’acteurs intermédiaires, des coordinateurs pédagogiques d’instituts de formation en soins infirmiers (IFSI) à partir de l’usage d’un instrument, le portfolio. Cet usage induit simultanément deux registres de transformation, directement issus de la double fonction médiatrice de l’instrument : l’un dirigé de manière externe, appelé processus d’instrumentation, concerne ce qui est transformé dans les situations de travail, sur le plan réel ou symbolique, lorsque l’instrument est utilisé ; l’autre registre de transformation, appelé processus d’instrumentalisation, est dirigé de manière interne, c’est-à-dire vers le sujet qui utilise l’instrument dans son travail : dans le cas présent nous nous sommes centré sur l’activité du coordinateur pédagogique. Par le fait d’utiliser un instrument, celui qui en fait usage voit se transformer ses schèmes d’action et ses schèmes de compréhension de l’action : il s’agit d’un enrichissement expérientiel, d’autant plus puissant qu’il s’accompagne d’un travail réflexif de conceptualisation de l’action.
Gleizer, González Tuñón y Gelman: rosas blindadas
Authors: Areta Marigó Gema
Published: July 2017

El artículo estudia la edición del primer poemario de Juan Gelman Violín y otras cuestiones, editado por Manuel Gleizer en 1956, con prólogo de Raúl González Tuñón. Entendemos que la bienvenida de Tuñón a Gelman al «círculo universal de la rosa» pasa por la comprensión de los ajustes realizados en su poética desde los treinta, una reformulación que abarca distintas etapas, donde son especialmente relevantes su militancia comunista y el contexto posperonista de los años cincuenta.
Au-delà des avant-gardes. Lettre au jeune poète que je me sens redevenir au retour d’un voyage en Europe centrale
Authors: Darras Jacques
Published: July 2017

Texte à la fois réflexif, polémique et poétique, l’article pose les questions fondamentales du statut de la poésie dans le moment présent. L’auteur est soucieux de la dévalorisation du texte poétique à l’ère de la mercantilisation de la culture et des critères commerciaux mis en place par le monde de l’édition tout autant qu’il se préoccupe d’un isolement croissant dû à l’élitisme d’une poésie qui se définit par l’hermétisme et la confidentialité. Ramenant le lecteur vers une tradition européenne, celle de Rilke notamment, qui donne de tout autres missions à la poésie. Engagée dans son temps et dans son milieu politique et économique, la poésie doit batailler sur le même terrain que tous les arts pour parler à un public qui ne serait pas le cercle restreint de quelques spécialistes. C’est par l’invention de nouvelles formes qui visent le monde d’aujourd’hui, tel le slam, que le poème peut trouver ou retrouver les canaux de sa diffusion maximale, celle qui fait du poète un ouvreur de pistes et un découvreur d’ordres nouveaux.
Small presses and literary/artistic collaboration in the U.S. after 1945: The examples of The Black Mountain Review, Jargon Press, and Granary Books
Authors: Montefalcone Barbara
Published: July 2017

The early 20th century European avant-garde movements have extensively shown the connection existing between the activity of independent publishers and the practice of literary/artistic collaboration. Such works as La Prose du Transsibérien et de la petite Jeanne de France (Blaise Cendrars and Sonia Delaunay, 1913) or Facile (Paul Eluard and Man Ray, 1935), would have never been published if the little review Les hommes nouveaux or the small publisher G.L.M had not acted as facilitators to allow those works to reach an audience.The artistic and publishing context of post-war America, though different from that of pre and post World War I Europe, presents interesting parallels concerning the role of small presses in encouraging the activity of collaboration between artists and writers. By exploring the work of daring editors and publishers as Robert Creeley (The Black Mountain Review), Jonathan Williams (Jargon press), and more recently, of Steve Clay (Granary Books) it is possible to see how, during the latter part of the 20th century, American avant-garde poetry found a way to circulate and to express its unique voice by its association - and most of the time by its collaboration - with the visual arts. In the 1950s Creeley insisted to match, in the seven issues of The Black Mountain Review that he edited, the most innovative poetry of the time with the reproductions of works by contemporary artists, and this in a way that was totally unique at the time. Jonathan Williams, through his Jargon series of well-crafted books, echoed Creeley’s work and put an even stronger emphasis on the activity of collaboration between the artists and the writers that he chose to publish. In more recent times (1980) Steve Clay took on the movement started years earlier by Creeley and Williams and, by establishing his publishing house known as Granary Book, began publishing a long series of collaborative works where the specificity of the writing is directly embodied in the material aspect of the book.
Typewriting as War Machine: Robert Duncan between Self- and Anti-Publishing
Authors: Oudart Clément
Published: July 2017

Even if publishing one’s poetic works with New Directions, James Laughlin’s New-York-based publishing house, is still seen by many in the experimental poetry world as the ultimate accolade, underground alternatives turn out to have been even more appealing to a marginal figure like the Bay Area poet Robert Duncan (1919-1988). A quick glance at the author’s bibliography unravels striking shifts in his publishing policy. Before and between his major New Direction volumes, the poet produced a whole series of small, hardly circulated chapbooks. These small publications not only reflect his commitment to the small press scene, but also convey a forceful point about the writer’s autonomy from the empire of publishing.
Progress toward New Sentimental Educations: How Contextual and Constructivist Poetics Reframe Issues of Distribution
Authors: Wedell Noura
Published: July 2017

This article looks at how Barrett Watten’s poem Progress relates to its audience, and to its sociocultural, economic and political contexts. Written in 1982-83 at the tail end of the Reagan recession, the poem is a long reflection on what it means to produce culture in a hostile neoliberal context, following the relative failure of the emancipatory movements of the 60s and 70s, and the dismantling of the horizon of progress of esthetic forms themselves. Watten’s poem is written in a parataxic mode via samplings of the contexts or worlds that its author inhabits. The text constructing an unstable voice that reflects the experience at the site of culture once the political role of art has been compromised. This voice builds itself up through negativity, by refusing linear narratives and stabilized readings, strategizing its relation to its context by resisting the visible and the clearly legible. Watten thus proposes an empty site of culture through which we might rethink how we inhabit our different worlds and recognize ourselves there.
Cultural imperialism or dialogue on equal terms? International publications of innovative American poetry
Authors: Brito Manuel
Published: July 2017

This article focuses on the international reception of American Language Poetry. We analyze and document how special sections or issues of journals, poetry centers and conferences in Australia, France, Italy, Japan, New Zealand, Russia, Spain, and the United Kingdom have been definitive in the dissemination of this kind of poetry outside United States. Rather than an Americanization of other poetries, the collaboration on translations and sharing of editorial projects in diverse countries asserted a spirit of multiple-way conversation that appealed for a world poetry awakening. Interestingly, most editors and publishers were also authors, pointing out just how fundamental has been the use of various means of production and interactive collaboration in the diffusion of contemporary poetry. Common sources of inspiration were drawn from other disciplines such as social theory, philosophy, and linguistics generated at both sides of the Atlantic, and beyond. Indeed, this cosmopolitan strategy has strengthened innovative American poetry, and grounded reciprocal influence and poetic avant-garde explorations in many parts of the world in late 20th- and early 21st-century.
La revista Inimigo Rumor y las prácticas vanguardistas
Authors: Scramim Susana
Published: July 2017

La revista Inimigo Rumor, editada por el poeta Carlito Azevedo, en la editorial 7 Letras, de Río de Janeiro, entre los años de 1996 y 2008, ha sido orientada por la valorización y divulgación de un modo de hacer la poesía en el cual, mientras fue publicada, estuvo presente la práctica poética desarrollada por diferentes vanguardias artísticas de la segunda mitad del siglo XX en Brasil, Francia, Portugal y Argentina. Empezando por la influencia que recibió de la vanguardia brasilera del Concretismo y sus conquistas formales en relación con el uso tradicional del verso en la poesía, posteriormente se desdobló en una valorización de la práctica poética del poema hecho con la materia de lo cotidiano y con gusto marcado por lo informe, venido de la vanguardia de los poetas “marginales” de Río de Janeiro; algo que podría parecer contradictorio si se tiene en cuenta que tal modo de entender y practicar el verso se opone a lo que los “concretistas” proponían con su vanguardia.La revista igualmente divulgaría, por un lado, la poesía de Rui Belo y Adília Lopes, poetas portugueses, y los argentinos, Tamara Kamenszain y Arturo Carrera, que en sus obras retoman el interés por lo informe y la poesía de lo cotidiano, demarcando la relación establecida con los “marginales”, y, por otro lado, se reorientaría en dirección a la constatación francesa del verso y de la formalización de la poesía, a partir de la divulgación de ensayos y poemas de Michel Deguy, Jean-Marie Gleize y Nathalie Quintane. La práctica editorial de la revista Inimigo Rumor no fue propiamente vanguardista, pues observó la declaración del poeta vanguardista Haroldo de Campos que afirmó, en 1981, que el ciclo de las vanguardias estaba terminado y que ya no podrían tener existencia efectiva, ya que los tiempos eran post-utópicos. Sin embargo, lo que propongo en mi lectura es que la revista ha trabajado bajo la perspectiva de acción de la vanguardia, sin serla propiamente, y ese modo de usar los poemas y ensayos de los vanguardistas fue una manera de seguir con ellos.
Lightning and Storm Type in Central Alabama
Authors: Willis Morgan , Senkbeil Jason
Published: July 2017

This study assessed the relationship between cloud-to-ground (CG) lightning and storm type on high-lightning days in Central Alabama during 2007 – 2011 with an emphasis on identifying which types of storms produce the most lightning. Five variables were used to classify high-lightning thunderstorms into 4 types. The storm types include: 1) spring linear events with high CG flash rates; 2) summer airmass events with a high percentage of area above 40 dBZ; 3) spring weak events representing several thunderstorm modes and; 4) summer Mesoscale Convective Systems with high flash rates and the highest percentage of areas above 40 dBZ. This research has the potential to aid forecasters in decision making by associating lightning potential with storm type characteristics observed on days with frequent lightning.
Smart City Governance for Sustainable Public Value Generation
Authors: Ferro Enrico , Osella Michele
Published: July 2017

This position paper belongs to a series of contributions on sustainable public value generation in urban areas. The article looks at how the complex transition process cities will be experiencing in the coming decades may be governed. In particular, the discussion investigates the role played by Information and Communication Technologies (ICTs) as well as how the intelligence of smart cities may be oriented towards the generation of sustainable public value. The topic is analysed from a value-oriented perspective and in the light of almost two decades of technology-driven innovation in both the private and the public sector. Two conceptual frameworks are proposed. The first one identifies the main contributions offered by ICTs, namely: the enablement of new production, distribution and governance processes; the transformation of organizational and institutional arrangements; and the information of individual choices and behaviours. The second one highlights the trade-offs to be managed and the principles to be applied for turning city intelligence into sustainable development.
Digital Participation through Mobile Internet Banking and Its Impact on Financial Inclusion
Authors: Jagani Khyati , Patra Santosh
Published: July 2017

Prime Minister of India Mr. Narendra Modi launched a national government project called “Jan Dhan Yojana”, with the aim of providing banking opportunity and insurance coverage to all the citizens of India including the under privileged section who until now did not open bank accounts or personal insurance. The aim of this project is to attract those people with low incomes, who lack knowledge, who feel they do not need banking service or do not have funds to open an account. The present study attempts to examine the Indian Financial Inclusion in the context of Individual participation, through the case of Pradhan Mantri Jan Dhan Yojana. The paper aims to understand the consumer participation and non-participation and its implications as a financial inclusion strategy. The paper evaluates the impact of digital divide on digital participation of the consumers in the context of internet and mobile banking service users.
Complexity Analysis of Vedic Mathematics Algorithms for Multicore Environment
Authors: Shrawankar Urmila , Sapkal Krutika Jayant
Published: July 2017

The huge computations performed sequentially requires a lot of time for execution as on contrary to the concurrent implementation. Many problems are involved in the dense linear algebra operations the main focus for this work is for solving linear equations. The problem of solving linear equations when approached using parallel implementation will yield better results. The Vedic mathematical method of Paravartya Yojayet is having less complexity as compared to the conventional methods. This work mainly focuses on the parallel implementation of the Paravartya Yojayet and its comparison to the benchmarking of the existing LU decomposition. The results of this implementation of Paravartya Yojayet are better when analysed theoretically but its actual parallel implementation will vary so it needs to be analysed and this work presents the same. The comparative analysis of the two ways for parallelization of the Paravartya Yojayet methods viz. ‘For loop' parallelization and the ‘direct parallelization' is also analysed in this work.
Meta Data based Conceptualization and Temporal Semantics in Hybrid Recommender
Authors: Gopalachari M. Venu , Sammulal Porika
Published: July 2017

Modern recommender systems target the satisfaction of the end user through the personalization techniques that collects the history of the user's navigation. But the sole dependency on the user profile by means of navigation history alone cannot promise the quality of recommendations because of the lack of semantics. Though the literature provides many techniques to conceptualize the process they lead to high computational complexity due to considering the content data as input information. In this paper a hybrid recommender framework is developed that considers Meta data based conceptual semantics and the temporal patterns on top of the usage history. This framework also includes an online process that identifies the conceptual drift of the usage dynamically. The experimental results shown the effectiveness of the proposed framework when compared to the existing modern recommenders also indicate that the proposed model can resolve a cold start problem yet accurate suggestions reducing computational complexity.
New Interpretation of Some Forgotten Problems
Authors: Ciulin Dan
Published: July 2017

Any theory may include partially and/or completely non-elucidated problems. If these are confirmed in practice, for a given time, such problems are presented as ‘laws' and after, ‘forgotten'. Of course, new theories may elucidate some of these problems but may also open some new other non-elucidated problems. The paper presents a number of such problems and tries to give a new theoretical and physical interpretation based on the energy transfer postulate and on some personal experiments. Then, some as the old problem of a bullet trajectory and the (actual) problems of mechanical and gravitational forces/torques, inertia, supposed gravitationally polarized materials similar to electrets and magnets, Dirac monopole, curvature, wetware waves and some mysterious possibilities of our brain are presented. It can also be observed that the energy transfer postulate accepts the fact that the speed of the light is the maximum possible speed for any physical object that move by inertia having (ideally) a zero-mean value of energy exchanged with the local fields and also that speeds greater than the light speed need a special energy to be realized. Associated with a good and convenient technology, all these are of strategic importance. Applications may be found in strategic forecast, interplanetary telecommunications and treks but also for earth vehicles and life. The presented tools may be used for modeling the fields and matter structures but also to insure their more comprehensive understanding.