bluuebunny/crossref_metadata_2025_split huggingface dataset:
Auswirkungen von Nutzungsrestriktionen auf die Wertschöpfungskette Holz – Beispiel Österreich
Authors: Schwarzbauer Peter , Braun Martin 
Published: January 2017

Impacts of harvest reductions on the value-added wood chain – the case of Austria
Wooden biomass availability and the possibility of a scarcity due to a potential harvest reduction are of crucial importance to the Austrian forest-based sector but also relevant for decision makers in environmental policy. The simulation model of the Austrian forest-based sector (model: “Forst- und Holzwirtschaft”, FOHOW) was used to simulate two independent scenarios with harvest reduction in forests available for wood supply (FAWS). In one scenario the reductions are implemented on FAWS of “average” profitability, in the other scenario the reductions take place on FAWS with “poor” profitability. On the one hand, the aim of the study was the analysis of the impacts of reduced wood supply on the value-added wood chain until 2025, on the other hand the impact intensities of the two scenarios have been compared. In general, a harvest reduction resulting in less wood supply has a negative impact on the Austrian forest-based sector. While forestry and the sawmill industry suffer more from a harvest reduction in FAWS with average profitability (because of the lower supply of coniferous roundwood), a harvest reduction in FAWS with lower profitability would affect the panel and paper industry as well as the wood-based energy sector more negatively; reduced harvests in these forest areas would mainly reduce the supply of non-coniferous wood. This, in turn would fuel the competition between the use of wood for materials vs. energy and push pulp- and fuelwood prices up.
A SURVEY FOR NEW MEMBERS OF THE TAURUS STAR-FORMING REGION WITH THE SLOAN DIGITAL SKY SURVEY*
Authors: Luhman K. L. , Mamajek E. E. , Shukla S. J. , Loutrel N. P. 
Published: January 2017

ABSTRACT
Previous studies have found that ∼1 deg2 fields surrounding the stellar aggregates in the Taurus star-forming region exhibit a surplus of solar-mass stars relative to denser clusters like IC 348 and the Orion Nebula Cluster. To test whether this difference reflects mass segregation in Taurus or a variation in the initial mass function, we have performed a survey for members of Taurus across a large field (∼40 deg2) that was imaged by the Sloan Digital Sky Survey (SDSS). We obtained optical and near-infrared spectra of candidate members identified with those images and the Two Micron All Sky Survey, as well as miscellaneous candidates that were selected with several other diagnostics of membership. We have classified 22 of the candidates as new members of Taurus, which includes one of the coolest known members (M9.75). Our updated census of members within the SDSS field shows a surplus of solar-mass stars relative to clusters, although it is less pronounced than in the smaller fields toward the stellar aggregates that were surveyed for previously measured mass functions in Taurus. In addition to spectra of our new members, we include in our study near-IR spectra of roughly half of the known members of Taurus, which are used to refine their spectral types and extinctions. We also present an updated set of near-IR standard spectra for classifying young stars and brown dwarfs at M and L types.
ERRATUM: “MID-INFRARED SPECTROPHOTOMETRIC OBSERVATIONS OF FRAGMENTS B AND C OF COMET 73P/SCHWASSMANN-WACHMANN 3” (2011, AJ, 141, 26)
Authors: Harker David E. , Woodward Charles E. , Kelley Michael S. P. , Sitko Michael L. , Wooden Diane H. , Lynch David K. , Russell Ray W. 
Published: January 2017

ABSTRACT
We present mid-infrared spectra and images from the GEMINI-N (+Michelle) observations of fragments SW3-[B] and SW3-[C] of the ecliptic (Jupiter Family) comet 73P/Schwassmann-Wachmann 3 pre-perihelion. We observed fragment B soon after an outburst event (between 2006 April 16–26 UT) and detected crystalline silicates. The mineralogy of both fragments was dominated by amorphous carbon and amorphous pyroxene. The grain size distribution (assuming a Hanner modified power-law) for fragment SW3-[B] has a peak grain radius of

μm, and for fragment SW3-[C],

μm; both values are larger than the peak grain radius of the size distribution for the dust ejected from ecliptic comet 9P/Tempel 1 during the Deep Impact event (

μm). The silicate-to-carbon ratio and the silicate crystalline mass fraction for the submicron to micron-size portion of the grain size distribution on the nucleus of fragment SW3-[B] were

and

, respectively, while on the nucleus of fragment SW3-[C], they were

and

, respectively. The similarity in mineralogy and grain properties between the two fragments implies that 73P/Schwassmann-Wachmann 3 is homogeneous in composition. The slight differences in grain size distribution and silicate-to-carbon ratio between the two fragments likely arise because SW3-[B] was actively fragmenting throughout its passage, while the activity in SW3-[C] was primarily driven by jets. The lack of diverse mineralogy in the fragments SW3-[B] and SW3-[C] of 73P/Schwassmann-Wachmann 3 along with the relatively larger peak in the coma grain size distribution suggests the parent body of this comet may have formed in a region of the solar nebula with different environmental properties than the natal sites where comet C/1995 O1 (Hale-Bopp) and 9P/Tempel 1 nuclei aggregated.
EXPLICIT SYMPLECTIC-LIKE INTEGRATORS WITH MIDPOINT PERMUTATIONS FOR SPINNING COMPACT BINARIES
Authors: Luo Junjie , Wu Xin , Huang Guoqing , Liu Fuyao 
Published: January 2017

ABSTRACT
We refine the recently developed fourth-order extended phase space explicit symplectic-like methods for inseparable Hamiltonians using Yoshida’s triple product combined with a midpoint permuted map. The midpoint between the original variables and their corresponding extended variables at every integration step is readjusted as the initial values of the original variables and their corresponding extended ones at the next step integration. The triple-product construction is apparently superior to the composition of two triple products in computational efficiency. Above all, the new midpoint permutations are more effective in restraining the equality of the original variables and their corresponding extended ones at each integration step than the existing sequent permutations of momenta and coordinates. As a result, our new construction shares the benefit of implicit symplectic integrators in the conservation of the second post-Newtonian Hamiltonian of spinning compact binaries. Especially for the chaotic case, it can work well, but the existing sequent permuted algorithm cannot. When dissipative effects from the gravitational radiation reaction are included, the new symplectic-like method has a secular drift in the energy error of the dissipative system for the orbits that are regular in the absence of radiation, as an implicit symplectic integrator does. In spite of this, it is superior to the same-order implicit symplectic integrator in accuracy and efficiency. The new method is particularly useful in discussing the long-term evolution of inseparable Hamiltonian problems.
APPARENT NON-COEVALITY AMONG THE STARS IN UPPER SCORPIO: RESOLVING THE PROBLEM USING A MODEL OF MAGNETIC INHIBITION OF CONVECTION
Authors: MacDonald James , Mullan D. J. 
Published: January 2017

ABSTRACT
Two eclipsing binaries in the USco association have recently yielded precise values of masses and radii for four low-mass members of the association. Standard evolution models would require these dM4.5–dM5 stars to have ages which are younger than those of more massive stars in the association by factors which appear (in extreme cases) to be as large as ∼3. Are the stars in the association therefore non-coeval? We suggest that the answer is no: by incorporating the effects of magnetic inhibition of convective onset, we show that the stars in USco can be restored to coevality provided the four low-mass member stars have vertical surface fields in the range 200–700 G. Fields of such magnitude have already been measured on the surface of certain solar-type stars in other young clusters.
STAR CLUSTER FORMATION IN COSMOLOGICAL SIMULATIONS. I. PROPERTIES OF YOUNG CLUSTERS
Authors: Li Hui , Gnedin Oleg Y. , Gnedin Nickolay Y. , Meng Xi , Semenov Vadim A. , Kravtsov Andrey V. 
Published: January 2017

ABSTRACT
We present a new implementation of star formation in cosmological simulations by considering star clusters as a unit of star formation. Cluster particles grow in mass over several million years at the rate determined by local gas properties, with high time resolution. The particle growth is terminated by its own energy and momentum feedback on the interstellar medium. We test this implementation for Milky Way-sized galaxies at high redshift by comparing the properties of model clusters with observations of young star clusters. We find that the cluster initial mass function is best described by a Schechter function rather than a single power law. In agreement with observations, at low masses the logarithmic slope is

, while the cutoff at high mass scales with the star formation rate (SFR). A related trend is a positive correlation between the surface density of the SFR and fraction of stars contained in massive clusters. Both trends indicate that the formation of massive star clusters is preferred during bursts of star formation. These bursts are often associated with major-merger events. We also find that the median timescale for cluster formation ranges from 0.5 to 4 Myr and decreases systematically with increasing star formation efficiency. Local variations in the gas density and cluster accretion rate naturally lead to the scatter of the overall formation efficiency by an order of magnitude, even when the instantaneous efficiency is kept constant. Comparison of the formation timescale with the observed age spread of young star clusters provides an additional important constraint on the modeling of star formation and feedback schemes.
DEEP CHANDRA OBSERVATIONS OF NGC 1404: CLUSTER PLASMA PHYSICS REVEALED BY AN INFALLING EARLY-TYPE GALAXY
Authors: Su Yuanyuan , Kraft Ralph P. , Roediger Elke , Nulsen Paul , Forman William R. , Churazov Eugene , Randall Scott W. , Jones Christine , Machacek Marie E. 
Published: January 2017

ABSTRACT
The intracluster medium (ICM), as a magnetized and highly ionized fluid, provides an ideal laboratory to study plasma physics under extreme conditions that cannot be achieved on Earth. NGC 1404 is a bright elliptical galaxy that is being gas stripped as it falls through the ICM of the Fornax Cluster. We use the new Chandra X-ray observations of NGC 1404 to study ICM microphysics. The interstellar medium of NGC 1404 is characterized by a sharp leading edge, 8 kpc from the Galaxy center, and a short downstream gaseous tail. Contact discontinuities are resolved on unprecedented spatial scales (0.″5 = 45 pc) due to the combination of the proximity of NGC 1404, the superb spatial resolution of Chandra, and the very deep (670 ks) exposure. At the leading edge, we observe sub-kiloparsec-scale eddies generated by Kelvin–Helmholtz instability (KHI) and put an upper limit of 5% Spitzer on the isotropic viscosity of the hot cluster plasma. We also observe mixing between the hot cluster gas and the cooler galaxy gas in the downstream stripped tail, which provides further evidence of a low viscosity plasma. The assumed ordered magnetic fields in the ICM ought to be smaller than 5 μG to allow KHI to develop. The lack of an evident magnetic draping layer just outside the contact edge is consistent with such an upper limit.
SPECTRAL CHANGES IN THE HYPERLUMINOUS PULSAR IN NGC 5907 AS A FUNCTION OF SUPER-ORBITAL PHASE
Authors: Fürst F. , Walton D. J. , Stern D. , Bachetti M. , Barret D. , Brightman M. , Harrison F. A. , Rana V. 
Published: January 2017

ABSTRACT
We present broadband, multi-epoch X-ray spectroscopy of the pulsating ultra-luminous X-ray source (ULX) in NGC 5907. Simultaneous XMM-Newton and NuSTAR data from 2014 are best described by a multicolor blackbody model with a temperature gradient as a function of accretion disk radius significantly flatter than expected for a standard thin accretion disk (

, with

). Additionally, we detect a hard power-law tail at energies above 10 keV, which we interpret as being due to Comptonization. We compare this observation to archival XMM-Newton, Chandra, and NuSTAR data from 2003, 2012, and 2013, and investigate possible spectral changes as a function of phase over the 78-day super-orbital period of this source. We find that observations taken around phases 0.3–0.4 show very similar temperature profiles, even though the observed flux varies significantly, while one observation taken around phase 0 has a significantly steeper profile. We discuss these findings in light of the recent discovery that the compact object is a neutron star and show that precession of the accretion disk or the neutron star can self-consistently explain most observed phenomena.
THE Hα EMISSION OF NEARBY M DWARFS AND ITS RELATION TO STELLAR ROTATION
Authors: Newton Elisabeth R. , Irwin Jonathan , Charbonneau David , Berlind Perry , Calkins Michael L. , Mink Jessica 
Published: January 2017

ABSTRACT
The high-energy emission from low-mass stars is mediated by the magnetic dynamo. Although the mechanisms by which fully convective stars generate large-scale magnetic fields are not well understood, it is clear that, as for solar-type stars, stellar rotation plays a pivotal role. We present 270 new optical spectra of low-mass stars in the Solar Neighborhood. Combining our observations with those from the literature, our sample comprises 2202 measurements or non-detections of Hα emission in nearby M dwarfs. This includes 466 with photometric rotation periods. Stars with masses between 0.1 and 0.6 M
⊙ are well-represented in our sample, with fast and slow rotators of all masses. We observe a threshold in the mass–period plane that separates active and inactive M dwarfs. The threshold coincides with the fast-period edge of the slowly rotating population, at approximately the rotation period at which an era of rapid rotational evolution appears to cease. The well-defined active/inactive boundary indicates that Hα activity is a useful diagnostic for stellar rotation period, e.g., for target selection for exoplanet surveys, and we present a mass-period relation for inactive M dwarfs. We also find a significant, moderate correlation between L
Hα
/L
bol and variability amplitude: more active stars display higher levels of photometric variability. Consistent with previous work, our data show that rapid rotators maintain a saturated value of L
Hα
/L
bol. Our data also show a clear power-law decay in L
Hα
/L
bol with Rossby number for slow rotators, with an index of −1.7 ± 0.1.
Cohérence, intégration informationnelle et changement : esquisse d’un programme de recherche à partir des Progiciels Intégrés de Gestion
Authors: Rowe Frantz 
Published: January 2017

En identifiant des perspectives de recherche sur les progiciels intégrés de gestion, 4 visions des projets PGI sont présentées. Elles reflètent les discours et les représentations de leurs promoteurs et des acteurs du changement dans l’entreprise : une vision déterministe axée sur la nécessité de solutions industrielles basées sur une offre externe à l’entreprise ; une vision ingénierique centrée sur l’homogénéisation et la cohérence du système d’information ; une vision émergente fortement conflictuelle liée à l’absence de latitude perçue par la Direction Générale et la difficulté de prévoir les impacts sur le travail ; une vision émergente dans un processus téléologique où les acteurs cherchent à s’appuyer sur certains effets qu’ils maîtrisent mieux que d’autres.
25 ans de recherche en Systèmes d’Information
Authors: Desq Sylvie , Fallery Bernard , Reix Robert , Rodhain Florence 
Published: January 2017

1 018 articles en Systèmes d’Information publiés depuis 1977 jusqu’à nos jours ont été lus et analysés dans leur intégralité afin de décrire la recherche en Systèmes d’Information. Après avoir justifié l’approche déductive multidimensionnelle utilisée, l’article décrit les éléments caractéristiques du champ de recherche ainsi que son évolution entre 1977 et 2001. Le champ apparaît, en permanence, centré autour d’une problématique dominante : l’évaluation. Une analyse comparative des recherches anglophones et francophones met en évidence des différences notables dans les sujets abordés et dans les démarches adoptées.
Banques centrales. L’impuissance de leur puissance ?
Authors: Flouzat Denise 
Published: January 2017

Le modèle contemporain des banques centrales, se caractérise par leur statut d’indépendance et l’objectif de leur politique : la stabilité monétaire. Sont analysées les politiques suivies de 1980 à 2007, qualifiées de « grande modération » en raison d’un taux d’inflation ramené autour de 2%. Cette situation a connu une rupture en 2007 avec la crise américaine des subprimes. Pour y faire face, les banques ont abaissé leurs taux directeurs, et mené des politiques non conventionnelles : refinancement des banques à long terme en zone euro et quantitative easing dans les pays anglo-saxons et au Japon. Ces politiques ont conduit à des taux de rendement nominaux des obligations très faibles et même à des taux négatifs. Alors que les banques centrales sont apparues pendant la crise comme les seuls détenteurs de la puissance économique, la critique de leurs résultats (reprise faible et absence d’inflation modérée (2%)), fait l’objet d’une certaine déception. Elles paraissent impuissantes pour agir sur la macroéconomie, d’où la proposition dans l’article de quelques pistes pour rechercher une nouvelle politique monétaire impliquant une coordination des actions des banques centrales sous l’égide du FMI.
Éthique et performance : Une relation incontournable pour un meilleur recrutement
Authors: Roche Didier 
Published: January 2017

Les managers d’équipe de vente sont soucieux de savoir s’ils doivent recruter ou non des vendeurs éthiques afin d’améliorer leurs résultats commerciaux. Cet article propose de s’intéresser à l’éthique de 229 négociateurs immobiliers d’une franchise immobilière internationale. Il précise ce qui peut être compris par la notion d’éthique et plus particulièrement d’éthique de l’acte de vente et de performance. Pour cela, l’éthique a été mesurée grâce à une méthodologie particulière : la méthode des scénarios. La performance, quant à elle, a pu être mesurée grâce à des indicateurs provenant de la littérature étudiée. Ensuite, ces deux notions ont été mises en relation pour conclure que, dans le cadre précis du terrain de recherche observé, les négociateurs immobiliers les moins éthiques étaient les plus performants.
Le développement du contrôle de gestion environnemental en France : Institutionnalisation, adoption et pratiques
Authors: Gibassier Delphine 
Published: January 2017

Cet article explore la notion d’innovations en contrôle de gestion environnemental et vise à explorer la façon dont elles sont créées, si elles sont appliquées ou non dans les entreprises, les conséquences de l’adoption, et enfin la manière dont elles sont pratiquées. Les méthodes de recherche combinent l’observation participante, les entretiens semi-directifs et des données secondaires. Cet article étudie la manière dont les innovations sont créées et leur processus d’institutionnalisation. L’accent est mis dans un premier temps sur les acteurs et leurs stratégies (l’étude du processus d’institutionnalisation). Grâce à une étude de cas approfondie d’une organisation, la deuxième partie révèle le processus de non-adoption d’une méthodologie de comptabilité carbone. En troisième partie, cet article analyse les pratiques entourant une innovation en contrôle de gestion dans une multinationale française. Cette recherche sur les innovations en contrôle de gestion environnemental contribue à mieux comprendre comment le développement durable peut aussi être atteint à travers la comptabilité dans les organisations. Note : cet article est publié suite au prix de thèse ANDESE 2015. Les articles issus de la thèse primée par un accessit sont soit publiés, soit en cours de publication dans des revues anglo-saxonnes. Cet article est un résumé de la thèse en français.
REFERENCE COMMUNITY: ADAPTING NATIVE PLANTS TO NORTH AMERICAN GREEN ROOFS
Authors: Mandel Lauren , McCoy Emily , Liss Toby 
Published: January 2017

INTRODUCTION The North American design community typically regards green roofs as inhospitable environments for native plants due to the infrastructure's characteristic thin soils, low organic matter, temperature fluctuations, and wind exposure. Consequently, green roofs are often planted with an industry-standard palette of non-native Sedum and Phedimus species that are adept at withstanding stress, but lack biodiversity and visual interest, and offer little food or shelter to native birds and insects. Regionally specific reference plant communities that thrive in similarly harsh growing conditions can positively influence green roof design throughout North America, and consequently provide ecosystem services, contribute to habitat conservation, and increase human exposure to the beauty and benefits of native plants.
VARIABILITY OF BUILDING SIMULATION RESULTS DEPENDING ON SELECTED WEATHER FILES AND CONDITIONING SET POINTS – A CASE STUDY FOR A RESIDENTIAL BUILDING IN VICTORIA, AUSTRALIA
Authors: Roetzel Astrid 
Published: January 2017

Building simulation is a powerful way to evaluate the performance of a building. The quality of simulation results however strongly depends on the accuracy of simulation input data. Especially for weather data files and occupant behaviour it is difficult to obtain accurate data. This paper evaluates the variability of building simulation results with regards to different weather data sets as well as different heating and cooling set points for a residential building in Victoria, Australia. Thermal comfort according to ASHRAE Standard 55, final energy consumption and peak cooling and heating loads are assessed. Simulations have been performed with Energy-Plus, and weather data for a multi-year approach have been generated with the software Meteonorm. The results show that different weather files for the same location as well as different conditioning set points can influence the results by approximately a factor of 2.
Prevalence of TEM, SHV, and CTX-M Beta-Lactamase genes in the urinary isolates of a tertiary care hospital
Authors: Bajpai Trupti , Pandey M , Varma M , Bhatambare G S 
Published: January 2017

Abstract
Introduction: Extended-spectrum beta-lactamases (ESBLs) are the major cause of resistance to beta-lactam antibiotics such as penicillins, cephalosporins, and monobactams. They are derived from the narrow-spectrum beta-lactamases (TEM-1, TEM-2, or SHV-1) by mutations that alter the amino acid configuration around the enzyme active site. Aim: To determine the prevalence of ESBL (bla TEM , bla CTX-M , and bla SHV ) genes among the members of Enterobacteriaceae. Methodology: The present prospective study was carried out from January 2015 to June 2015 in the Department of Microbiology and Molecular Medicine of a Teaching Tertiary Care Hospital. A total of 526 urine samples were studied. Seventy-eight isolates were subjected to polymerase chain reaction for detection of ESBL genes. Results: In our study, ESBL genes were detected among 18 (45%) phenotypically confirmed ESBL producers and 20 (52.5%) phenotypically confirmed non-ESBL producers. The gene that predominated was bla TEM (48.7%), followed by bla CTX-M (7.6%) and bla SHV (5.1%). Conclusion: Definitive identification of ESBL genes is only possible by molecular detection methods. Phenotypic tests need to be evaluated periodically as their performance may change with the introduction of new enzymes.