bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Review of Undergraduate Evolution Education in U.S. Universities: Building a Unifying Framework
Authors: Lloyd-Strovas Jenny D. , Bernal Ximena E. 
Published: August 2012

Abstract
Despite a considerable amount of scientific evidence, evolution is still a highly controversial issue in American education. This review analyzes studies that investigate the relationship between evolution education, the nature of science, and religious beliefs in U.S. universities. We performed a comprehensive literature search focusing on publications that analyzed and compared at least two of the following constructs: understanding of evolutionary theory (ET), acceptance of ET, instruction in ET, prior exposure to ET, religious beliefs, understanding the nature of science, and understanding of scientific theories. Here, we examine publications for consistent relationships among constructs across studies and discuss the most commonly cited education strategies for teaching evolution in higher education. Based on the literature, we find that instruction has a significant and positive effect on acceptance and understanding of ET; acceptance and understanding, however, are not directly related. We also find that the relationship between acceptance of ET and religious beliefs is unclear and needs further research. Through reviewing 15 published studies, we find that the primary problems associated with undergraduate evolution education research are: small sample size, varying methodologies, lack of statistical analysis, inappropriate use of constructs, and lack of continuity among studies. This review exposes the need for a unifying framework and development of experts in this field to investigate and understand the factors that affect evolution education at U.S. universities.
A case of repetitive nonreentrant ventriculoatrial synchrony exacerbating heart failure in dilated cardiomyopathy
Authors: Toyoshima Yuko , Inoue Koichi , Kimura Ryusuke , Doi Atsushi , Masuda Masaharu , Sotomi Yohei , Iwakura Katsuomi , Fujii Kenshi 
Published: August 2012

AbstractA 67‐year‐old man with poor left ventricular function due to a dilated cardiomyopathy was implanted with an implantable cardioverter defibrillator for secondary prevention. Eight years later, he was admitted to our hospital with worsening of heart failure. An electrocardiogram showed a repetitive nonreentrant ventriculoatrial synchrony (RNRVAS). RNRVAS is a device‐related arrhythmia that can occur when a dual‐chamber pacemaker does not sense a retrograde P wave within the postventricular atrial refractory period, resulting in a repetitive ventricular pacing and noncaptured atrial pacing after the retrograde P wave. We suspected that ventricular pacing caused his heart failure and used the noncompetitive atrial pacing algorithm, which was programmed to prevent RNRVAS. The algorithm was able to prevent the arrhythmia, and the patient successfully recovered from heart failure.
THE DIALOGUE BETWEEN UNITED KINGDOM COURTS AND THE EUROPEAN COURT OF HUMAN RIGHTS
Authors: Amos Merris 
Published: August 2012

AbstractIn this article the scope for dialogue between UK courts and the European Court of Human Rights is considered in theory and in practice. Having demonstrated that meaningful dialogue does take place in certain circumstances, the author considers the impact of dialogue and questions whether or not there can be any further expansion in dialogue whilst avoiding negative outcomes such as confusion over the creation of human rights norms and a loss in legitimacy for national courts adjudicating upon human rights issues.
STATE LIABILITY FOR JUDICIAL DECISIONS IN EUROPEAN UNION AND INTERNATIONAL LAW
Authors: Davies Arwel 
Published: August 2012

AbstractAs a consequence of the state unity theory, the conduct of all state organs is attributed to the state in an undifferentiated manner. It follows that, in both international and European Union law, state liability can be based on the substance of judicial decisions despite the independence of the judicial branch. However, beyond the matter of attribution, there is a significant divergence between the two legal systems. In international law, the judicial origin of challenged decisions does not influence the application of liability criteria, whereas, in EU law, the liability criteria can be applied to judicial decisions in a tightened manner. This article has the twofold aim of establishing and explaining this difference.
WHY THE FRENCH DON'T LIKE THE BURQA:LAÏCITÉ, NATIONAL IDENTITY AND RELIGIOUS FREEDOM
Authors: Hunter-Henin Myriam 
Published: August 2012

AbstractThis article examines the controversies over and implications of the 2010 French ban on the covering of the face. It carries out an internal critique of the new law and, in a broader European context, questions its compatibility with the European Convention on Human Rights. It argues that the ban has strayed away from the confines of laïcité (the separation of State and religion in the public sphere) by encompassing activities and people who in no way emanate from the State. Far from being a flagship of a secularism—à la française—or a French way of life, the ban—it is argued—goes against entrenched French legal traditions and unduly conflates the concept of national identity at the cost of individual liberties, thus forgetting the true goal of secularism: the conciliation of different beliefs and values. Assuming that the defence of secularism is nevertheless (for reasons we will explore) upheld by the European Court of Human Rights as a legitimate aim pursued by the law, the French ban, it is argued, is likely to fall foul of European requirements for lack of proportionality.
THE DUTY TO GIVE REASONS FOR ADMINISTRATIVE DECISIONS IN INTERNATIONAL LAW
Authors: Hepburn Jarrod 
Published: August 2012

AbstractAs scholars in the Global Administrative Law project have recognized, doctrines familiar from domestic administrative systems are beginning to appear, in nascent forms, in some areas of international law. This article makes a first attempt to examine the appearance of one such doctrine, the duty to give reasons for administrative decisions, in international case-law. The existence of and rationales for this duty have been contentious in many domestic jurisdictions. The article thus considers the extent to which these debates have been replicated amongst adjudicators at the international level. The focus is on cases in the areas of WTO law, investment law and human rights law. It is found that the case law is not yet extensive, and (perhaps as a result) that no coherent picture emerges. In contrast to domestic systems, the areas examined in international law demonstrate some agreement on the desirability of the duty. However, different international adjudicators have recognized different rationales for the duty, with only limited consensus even within each area of international law studied.
X-ray powder diffraction data for a DACH Pt dibromide, cis-[dibromo(1R,2R)-1,2-diaminocyclohexane-κN, κN′] platinum(II)
Authors: Maixner J. , Pažout R. , Nováková I. , Holakovská J. , Kačer P. 
Published: August 2012

X-ray powder diffraction data, unit-cell parameters, and space group for a novel platinum-based anticancer complex cis-[dibromo(1R,2R)-1, 2-diaminocyclohexane-κN, κN′]platinum(II), cis-Pt(C6H14N2)Br2, are presented [a = 11.862(4) Å, b = 7.222(3) Å, c = 13.353(2) Å, β = 97.813(7)°, cell volume V = 1133,36 Å3, Z = 4, space group P21]. All measured lines were indexed and are consistent with the P21 space group. No detectable impurities were observed.
Structural and electrical properties of Nd1.7Ba0.3Ni0.9Cr0.1O4+δ compound
Authors: Jammali Manel , Hassen Rached Ben , Rohlicek Jan 
Published: August 2012

The Nd1.7Ba0.3Ni0.9Cr0.1O4+δ polycrystalline sample was synthesized by the sol–gel process and a subsequent annealing at 1523 K in 1 atm of flowing argon. X-ray diffraction (XRD) analysis and electrical transport properties have been investigated as well. The oxygen non-stoichiometry was determined by iodometric titration. The sample shows adoption of the K2NiF4-type structure based on a tolerance factor calculation. Rietveld refinement of the crystal structure from X-ray powder diffraction data confirmed that Nd1.7Ba0.3Ni0.9Cr0.1O4+δ adopts the tetragonal structure (space group I4/mmm, Z = 2). The room temperature unit-cell parameters are determined to be a = 3.82515(2) and c = 12.47528(6) Å. The reliability factors are: RB = 0.043, Rwp = 0.012 and χ2 = 3.00. The Nd1.7Ba0.3Ni0.9Cr0.1O4+δ compound exhibits a semi-conductive behaviour. The electrical transport mechanism has been investigated and it agrees with the adiabatic small polaron hopping model in the temperature range 313 K ≤ T ≤ 708 K.
Ab initio crystal structure determination of two chain functionalized pyrroles from synchrotron X-ray powder diffraction data
Authors: da Silva Iván , López-Tosco Sara , Tejedor David , García-Tellado Fernando , González-Platas Javier 
Published: August 2012

The crystal structure of two chain functionalized pyrroles, methyl 1-benzyl-5-(1-(4-chlorobenzoyloxy)-2-methoxy-2-oxoethyl)-4-(4-chlorophenyl)-1H-pyrrole-2-carboxylate and methyl 1-benzyl-4-(biphenyl-4-yl)-5-(1-(4-biphenylcarbonyloxy)-2-methoxy-2-oxoethyl)-1H-pyrrole-2-carboxylate, which are both important active candidates as antitumoral agents, have been obtained ab initio from synchrotron X-ray powder diffraction data. Both compounds crystallize in the monoclinic system (space group P21/c), with a = 20.2544(3) Å, b = 6.80442(9) Å, c = 21.1981(3) Å, β = 111.6388(9)° and a = 29.7747(6) Å, b = 6.27495(14) Å, c = 18.8525(3) Å, β = 107.053(2)°, respectively. These structures were determined using a direct space approach, by means of Monte Carlo technique, followed by Rietveld refinement.
Synthesis and X-ray diffraction data of 5-acryloyloxy-trans-2-(4-methoxyphenyl)-3-methyl-2,3-dihydrobenzo[b]furan
Authors: Sandoval Mónica V. , Henao J. A. , Bohórquez Arnold R. Romero , Kouznetsov Vladimir V. 
Published: August 2012

The compound O-acryloylated 2,3-dihydrobenzo[b]furan-5-ol (2) described in the title (chemical formula C19H18O4) was synthesized through the acryloylation reaction in anhydrous dichloromethane from the corresponding trans-2-(4-methoxyphenyl)-3-methyl-2,3-dihydrobenzo[b]furan-5-ol derivative (1), an adduct easily obtained using the Lewis acid-promoted formal [3 + 2] cycloaddition reaction. Molecular characterization was performed by Fourier Transform-Infrared (FT-IR), Gas Chromatography-Mass Spectrometry (GC-MS), 1H and 13C NMR and crystallographic characterization was carried out by X-ray diffraction (XRD) of polycrystalline samples. The title compound crystallized in a monoclinic system and unit-cell parameters are reported [a = 8.067(2) Å, b = 8.803(2) Å, c = 22.405(5) Å, β = 91.62(3)°, unit-cell volume V = 1590.7(6) Å3 and Z = 4]. All measured lines were indexed with the P21/c (No. 14) space group.
Miniaturization of mechanical milling for powder X-ray diffraction
Authors: Locock Andrew J. , Chesterman David , Caird Diane , Duke M. John M. 
Published: August 2012

To enable mechanical milling of small (0.1–1.0 g) samples, a cylindrical grinding vessel machined from polypropylene and furnished with tungsten carbide rods has been designed and produced for use inside the conventional jar of a McCrone Micronizing Mill. The vessel is about one-seventh the volume of the conventional jar supplied by the manufacturer. The conditions of milling for both the conventional and the miniaturized-grinding assemblies were tested using quartz sand as a limiting case. The median grain sizes of the resultant powders were measured by an X-ray gravitational-sedimentation method, with contamination from the grinding media measured by Rietveld refinement and by instrumental neutron activation analysis. The use of tungsten carbide grinding elements permits rapid wet milling of a small sample to the same median grain size in about one-third of the time required by a regular sample ground in corundum. The relative contamination (by tungsten carbide on a weight basis) using the miniaturized-grinding assembly is about 6(1)% of the proportion of corundum contamination yielded by the conventional grinding assembly.
X-ray powder diffraction data for the mineral refikite
Authors: Pažout R. , Sejkora J. 
Published: August 2012

X-ray powder diffraction data, unit-cell parameters and space group for a rare natural organic mineral refikite, C20H32O2, abiet-13(15)-en-18-oic acid, are reported [a = 22.55(2) Å, b = 10.469(6) Å, c = 7.930(9) Å, unit-cell volume V = 1871.82 Å3, Z = 4 and space group P21212]. All measured lines were indexed and are consistent with the P21212 space group. No detectable impurities were observed.
Population synthesis at the crossroads
Authors: Leitherer Claus , Ekström Sylvia 
Published: August 2012

AbstractThe current state-of-the-art of population synthesis is reviewed. The field is currently undergoing major revisions with the recognition of several key processes as new critical ingredients. Stochastic effects can artificially enhance or suppress certain evolutionary phases and/or stellar mass regimes and introduce systematic biases in, e.g., the determination of the stellar initial mass function. Post-main-sequence evolution is often associated with irregular variations of stellar properties on ultra-short time-scales. Examples are asymptotic giant branch stars and luminous blue variables, both of which are poorly treated in the models. Stars rarely form in isolation, and the fraction of truly single stars may be very small. Therefore, stellar multiplicity must be accounted for since many systems will develop tidal interaction over the course of their evolution. Last but not least, stellar rotation can drastically increase stellar temperatures and luminosities, which in turn leads to revised mass-to-light ratios in population synthesis models.
NBursts+phot: parametric recovery of galaxy star formation histories from the simultaneous fitting of spectra and broad-band spectral energy distributions
Authors: Chilingarian Igor V. , Katkov Ivan Yu. 
Published: August 2012

AbstractWe present NBursts+phot, a novel technique for the parametric inversion of spectrophotometric data for unresolved stellar populations where high-resolution spectra and broadband SEDs are fitted simultaneously, helping to break the degeneracies between parameters of multi-component stellar population models.
An empirical spectral library of chemically well characterized stars for stellar population modelling
Authors: de Castro Milone André , Sansom Anne E. , Sánchez-Blázquez Patricia , Vazdekis Alexandre , Falcón-Barroso Jesus , Prieto Carlos Allende 
Published: August 2012

AbstractWith the goal of assembling a new generation of more realistic single stellar population (SSP) models, we have obtained magnesium abundances for nearly 80% of the stars of the widely employed MILES empirical spectral library. Additional spectroscopic observations of carefully selected stars have recently been obtained to improve the parametric coverage of this library. Here we report on: (i) the framework of Mg abundance determination carried out at mid-resolution, (ii) the newly acquired data, and (iii) the preliminary steps towards modelling stellar populations.
A first glance into the Spectral Energy Distributions of Single Stellar Populations in the Infrared range
Authors: Meneses-Goytia Sofia , Peletier Reynier F. 
Published: August 2012

AbstractThe present work shows the Spectral Energy Distributions (SEDs) in the infrared using the IRTF stellar library, obtained using models based on Single Stellar population Models (SSP). We have focused on the K band in order to compare with observables of elliptical galaxies. We also present the comparisons of our models with velocity dispersions, ages and metallicities obtained with models in the optical range.
A Bayesian approach to quantify the uncertainties in the determination of galaxy properties derived from spectral fits
Authors: Magris C. Gladis , Mateu Cecilia , Bruzual A. Gustavo 
Published: August 2012

AbstractWe use a bayesian formalism to quantify the uncertainties in the determination of the luminous mass and age of the dominant stellar population in a galaxy obtained from simple spectral fits. The analysis is performed over a sample of synthetic spectra covering a wide range of star formation histories and seen at different ages and redshifts. Using the bayesian approach we can establish quantitatively the uncertainties in the parameters derived from these fits in a straightforward manner, which is not possible using some simple algorithms, e.g. GASPEX, a non-negative least-square fitting algorithm.
The UV upturn phenomenon in the hierarchical universe
Authors: Lee Jaehyun , Yi Sukyoung K. 
Published: August 2012

AbstractRecent studies show that an old stellar population with high metallicity in the monolithic paradigm can explain the UV upturn. Numerical simulations and empirical studies however point out that massive early-type galaxies have evolved hierarchically with an extended star formation history. This obviously has an impact on our traditional understanding on the UV upturn and requires a new investigation on its origin. We report on our investigation on the evolutionary history of model galaxy SEDs in the hierarchical scenario. The use of conventional population models (calibrated to the monolithic picture) in combination with merger trees and extended star formation fails to reproduce the observed UV upturn. If a hierarchical picture is thought to be more realistic than a monolithic one, new calibration on the population models is required.
Star formation history and the SED of galaxies: insights from resolved stars
Authors: Johnson Benjamin D. , Weisz Daniel R. 
Published: August 2012

AbstractThe star formation history (SFH) of galaxies is a principle uncertainty in SED modeling, and simple parameterizations of the SFH in typical SED fitting techniques may introduce biases in the resulting derived parameters. It is possible to constrain the SFH of galaxies more tightly through the observations of resolved stellar colour-magnitude diagrams with HST. This work is a first attempt to combine constraints on galaxy SFH from resolved stars with broadband SED modeling from the UV to the IR. This combination allows for the effects of different realistic SFHs on the SED to be quantified.
Direct constraints on the impact of TP-AGB stars on the SED of galaxies from near-infrared spectroscopy
Authors: Zibetti Stefano , Gallazzi Anna , Charlot Stéphane , Pasquali Anna , Pierini Daniele 
Published: August 2012

AbstractWe present new spectro-photometric NIR observations of 16 post-starburst galaxies especially designed to test for the presence of strong carbon features of thermally pulsing AGB (TP-AGB) stars, as predicted by recent models of stellar population synthesis. Selection based on clear spectroscopic optical features indicating the strong predominance of stellar populations with ages between 0.5 and 1.5 Gyr and redshift around 0.2 allows us to probe the spectral region that is most affected by the carbon features of TP-AGB stars (unaccessible from the ground for z ~ 0 galaxies) in the evolutionary phase when their impact on the IR luminosity is maximum. Nevertheless, none of the observed galaxies display such features. Moreover the NIR fluxes relative to optical are consistent with those predicted by the original Bruzual & Charlot (2003) models, where the impact of TP-AGB stars is much lower than has been recently advocated.
Spectral fitting of SDSS passive galaxies with α-enhanced single stellar populations
Authors: Gomes Jean Michel , Coelho Paula 
Published: August 2012

AbstractThe power of population synthesis as a mean to estimate the star-formation and chemical histories of galaxies has been well established in the last decade. The major developments were due to a huge avalanche of methods, codes and high-quality galaxy data sets, such as the 2dF, 6dF and SDSS surveys. Semi-empirical spectral synthesis allows for the decomposition of a galaxy spectrum in terms of linear combinations of base elements, i.e. Single Stellar Populations (SSPs) of different ages and metallicities, which are computed from evolutionary synthesis codes (BPASS, GALEV, GALAXEV, MILES, PÉGASE, etc. . .), containing distinct ingredients like: stellar library, evolutionary tracks, metallicities and Initial Mass Function. In general, they have solar-scaled relative abundances, but this is about to change with the unfolding of new α-enhanced SSP models (Coelho et al. 2007). However, passive galaxies have some spectral features corresponding to “enhanced-ratios” ([E/Fe]), like O, Ne, Si, S, Mg, Na, C and N over Fe that are not well modeled using solar-scaled SSPs (Trager et al. 2000), leading to residuals between observed and modeled spectra, which also correlate with the velocity dispersion (σ*) and stellar mass (M*): Massive galaxies exhibit a larger [E/Fe] discrepancy than less massive ones. This result can be interpreted as a signature of distinct previous star-formation efficiencies in passive galaxies, leading to distinctive ratios of type Ia and II SNe.We have applied the starlight spectral synthesis code (Cid Fernandes et al. 2005) to a sample of ~ 1000 passive galaxies from the SDSS DR7 with a S/N at the continuum ≥ 20 to investigate possible enhancements in the derived [E/Fe] ratios. Three sets of SSPs based on Coelho et al. (2007) theoretical models and Walcher et al. (2009) prescriptions were computed for [α/Fe]=0.0, [α/Fe]=0.2 and [α/Fe]=0.4. Our aim is to determine: (1) the quality of the fits, (2) the mean stellar age and metallicity distributions, and (3) the star-formation history of passive galaxies.Using [α/Fe]=0.0 SSPs, we have identified the strongest residuals in the CN (4142.125-4177.125 Å), Na D (5876.875-5909.375 Å) and Mg (5069.125-5196.625 Å) bands. On the other hand, [α/Fe]=0.2 and [α/Fe]=0.4 SSP models tend to reproduce better the Mg band, as compared to solar-scaled SSPs ([α/Fe]=0.0). The residuals are decreased by 1.77 Å ([α/Fe]=0.2) and 2.92 Å ([α/Fe]=0.4). However, as expected, these α--enhanced models lead to worse fits for the CN and Na D bands. These residuals may even reach up to 2.08 Å (CN) and 4.20 Å (Na D), using [α/Fe]=0.2 SSPs and 2.28 Å (CN) and 7.94 Å (Na D), using [α/Fe]=0.4 SSPs.In terms of mean stellar ages and metallicities, we obtain non-negligible biases in both quantities when we compare the solar-scaled SSPs with α-enhanced ones, which tend to have mean stellar ages by 0.12 dex ([α/Fe]=0.2) and 0.14 dex ([α/Fe]=0.4) higher and mean stellar metallicities by 0.1 dex ([α/Fe]=0.2) and 0.2 dex ([α/Fe]=0.4) lower.
Multi-component parametric inversion of galaxy kinematics and stellar populations using full spectral fitting
Authors: Katkov Ivan Yu. , Chilingarian Igor V. 
Published: August 2012

AbstractThe stellar line-of-sight velocity distribution (LOSVD) can be strongly asymmetric in regions where the light contributions of both disc and bulge in spiral and lenticular galaxies are comparable. Existing techniques for the stellar kinematics analysis do not take into account the difference of disc and bulge stellar populations. Here we present a novel approach to the analysis of stellar kinematics and stellar populations. We use a two-component model of spectra where different stellar population components are convolved with pure Gaussian LOSVDs. For this model we present Monte-Carlo simulations demonstrating degeneracies between the parameters.