bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reciprocal influences between maternal language and children's language and cognitive development in low-income families
Authors: SONG LULU , SPIER ELIZABETH T. , TAMIS-LEMONDA CATHERINE S. 
Published: January 2013

ABSTRACTWe examined reciprocal associations between early maternal language use and children's language and cognitive development in seventy ethnically diverse, low-income families. Mother–child dyads were videotaped when children were aged 2;0 and 3;0. Video transcripts were analyzed for quantity and lexical diversity of maternal and child language. Child cognitive development was assessed at both ages and child receptive vocabulary was assessed at age 3;0. Maternal language related to children's lexical diversity at each age, and maternal language at age 2;0, was associated with children's receptive vocabulary and cognitive development at age 3;0. Furthermore, children's cognitive development at age 2;0 was associated with maternal language at age 3;0 controlling for maternal language at age 2;0, suggesting bi-directionality in mother–child associations. The quantity and diversity of the language children hear at home has developmental implications for children from low-income households. In addition, children's early cognitive skills further feed into their subsequent language experiences.
An indefinite and critical concave—convex-type equation
Authors: Quoirin Humberto Ramos , Ubilla Pedro 
Published: January 2013

We analyse the multiplicity of non-negative solutions for the critical concave—convex-type equationwhere Ω is a bounded domain of ℝN, 1 < r < p and λ > 0, and μ is a real parameter. Combining minimization on the underlying Nehari manifold with energy estimates, we show that, under suitable conditions on a and b, three non-negative solutions may exist when λ is positive and sufficiently small and μ is in a right neighbourhood of μ1, the first weighted eigenvalue of the p-Laplacian. To the best of our knowledge, our multiplicity result is new, even in the semi-linear case p = 2.
The case for diglossia: Describing the emergence of two grammars in the early acquisition of metropolitan French
Authors: PALASIS KATERINA 
Published: January 2013

ABSTRACTThis article supports the diglossic approach to variation in metropolitan French by delving into the subject from the point of view of acquisition. Drawing on naturalistic data from 37 native French children between the ages of 2;3 and 4;0, the investigation exemplifies the existence of two cognate, but distinct grammars in the mind/brain of these children. The distinction between Spontaneous French (G1, all children) and Normed French (G2, 4 children by age 4) hinges upon two crucial characteristics, i.e. the morpho-syntactic status of nominative clitics and the emergence of the negative particlene. Accusative clitics with imperatives and past-participle agreement are also examined in order to gain a comprehensive picture of the two grammars. Finally, the emergence ofneis interpreted as a trigger forcing a speaker to move from G1to G2due to the total unavailability ofnein G1.
Do French speakers really have two grammars?
Authors: ROWLETT PAUL 
Published: January 2013

ABSTRACTI consider variation within French and its status in speakers’ mental grammars. I start with Massot's (2008) claim that, within relevant grammatical units, speakers in contemporary metropolitan France do not combine socio-stylistically marked L and H features, and his explanation of this in terms of diglossia (Ferguson, 1959), that is, the idea that speakers possess two (in this case massively overlapping but not identical) ‘French’ grammars which co-exist in their minds: one (français démotique, FD: acquired early, well, and in a naturalistic environment) comprises one set of grammatical features which generate unmarked forms and the marked L forms; the other (français classique tardif, FCT: learnt later, often unreliably, in a more formal context and under the influence of literacy) comprises a (partially) different set of grammatical features which generate the same unmarked forms as well as the marked H forms. Speakers switch between FD and FCT but do not use them both simultaneously, at least not within the context of an individual clause. While Massot's claim is controversial (see Coveney, 2011), I provisionally accept that it is correct, and move on to consider his explanation. I review instances of variation for which I suggest Massot's model needs to be revised in order to account for the phenomenon of surface forms which can be generated by both putative grammars, and which are therefore superficially part of the overlap, but which have a different linguistic status in each and underlyingly are not therefore part of any overlap. I then reconsider Massot's two-grammar hypothesis, raising issues surrounding the extent of the overlap between them, the nature of the differences between them, and their respective statuses in the minds of speakers. I suggest that in view of their massive overlap, their non-random differences, and their contrasting cognitive statuses, it does not make sense to view both FD and FCT as autonomous grammars. Rather, I suggest that only FD is an autonomous grammar. Since the differences between FD and FCT are instantiations of naturally occurring developments usually conceptualised in terms of cyclic grammaticalisation and renewal (the L features of FD are innovations with respect to the H features of FCT), I suggest that FCT should be seen as a dependent grammatical ‘bolt on’ which encodes its conservatism in an abstract and economical way.
Decreased serum levels of brain-derived neurotrophic factor in adults with attention-deficit hyperactivity disorder
Authors: Corominas-Roso Margarida , Ramos-Quiroga Josep A. , Ribases Marta , Sanchez-Mora Cristina , Palomar Gloria , Valero Sergi , Bosch Rosa , Casas Miguel 
Published: January 2013

Abstract
It has been hypothesized that brain-derived neurotrophic factor (BDNF) is involved in the pathogenesis of attention-deficit hyperactivity disorder (ADHD), although experimental data regarding the contribution of BDNF gene polymorphisms to this psychiatric disorder are controversial. Recently, changes in BDNF serum levels have been reported in children with ADHD, but there are no studies about the possible role of this neurotrophin in adults. A total of 54 Caucasoid ADHD adults, including the predominantly inattentive and combined types (aged 33.43 ± 8.99 yr) and 59 Caucasoid unrelated healthy controls (aged 35.52 ± 9.37 yr) were included in a study to evaluate BDNF levels in serum. Medical, neurological and psychiatric co-morbidities were excluded. Clinical data concerning ADHD diagnosis and blood samples for patients and controls were collected. BDNF serum levels were significantly lower in adults with ADHD compared to healthy controls (p < 0.0001). Although the combined type of ADHD subgroup displayed lower BDNF serum levels than the inattentive type, the differences did not reach statistical significance. No significant correlations were found between serum BDNF levels and scores on the Conners' Adult ADHD Rating Subscales. These results suggest a role for BDNF in ADHD, at least in those patients whose disorder persists throughout life. Low BDNF levels may contribute to the neurodevelopmental deficits of ADHD and to the persistence of the disorder into adulthood. BDNF differences between ADHD subtypes should be further studied.
A worldwide comparison of the best sites for submillimetre astronomy
Authors: Tremblin P. , Schneider N. , Minier V. , Durand G. Al. , Urban J. 
Published: January 2013

AbstractOver the past few years a major effort has been put into the exploration of potential sites for the deployment of submillimetre (submm) astronomical facilities. Amongst the most important sites are Dome C and Dome A on the Antarctic Plateau, and the Chajnantor area in Chile. In this context, we report on measurements of the sky opacity at 200 μm over a period of three years at the French-Italian station, Concordia, at Dome C, Antarctica. Based on satellite data, we present a comparison of the atmospheric transmission at 200, 350 μm between the best potential/known sites for submillimetre astronomy all around the world.The precipitable water vapour (PWV) was extracted from satellite measurements of the Infrared Atmospheric Sounding Interferometer (IASI) on the METOP-A satellite, between 2008 and 2010. We computed the atmospheric transmission at 200 μm and 350 μm using the forward atmospheric model MOLIERE (Microwave Observation LIne Estimation and REtrieval). This method allows us to compare known sites all around the world without the calibration biases of multiple in-situ instruments, and to explore the potential of new sites.
Winter sky brightness and cloud cover at Dome A, Antarctica
Authors: Moore Anna M. , Yang Yi , Fu Jianning , Ashley Michael C. B. , Cui Xiangqun , Feng Long Long , Gong Xuefei , Hu Zhongwen , Lawrence Jon S. , Luong-Van Daniel M. , Riddle Reed , Shang Zhaohui , Sims Geoff , Storey John W. V. , Tothill Nicholas F. H. , Travouillon Tony , Wang Lifan , Yang Huigen , Yang Ji , Zhou Xu , Zhu Zhenxi 
Published: January 2013

AbstractAt the summit of the Antarctic plateau, Dome A offers an intriguing location for future large scale optical astronomical observatories. The Gattini Dome A project was created to measure the optical sky brightness and large area cloud cover of the winter-time sky above this high altitude Antarctic site. The wide field camera and multi-filter system was installed on the PLATO instrument module as part of the Chinese-led traverse to Dome A in January 2008. This automated wide field camera consists of an Apogee U4000 interline CCD coupled to a Nikon fisheye lens enclosed in a heated container with glass window. The system contains a filter mechanism providing a suite of standard astronomical photometric filters (Bessell B, V, R) and a long-pass red filter for the detection and monitoring of airglow emission. The system operated continuously throughout the 2009, and 2011 winter seasons and part-way through the 2010 season, recording long exposure images sequentially for each filter. We have in hand one complete winter-time dataset (2009) returned via a manned traverse. We present here the first measurements of sky brightness in the photometric V band, cloud cover statistics measured so far and an estimate of the extinction.
Cometary dust in Antarctic micrometeorites
Authors: Imae Naoya 
Published: January 2013

AbstractCometary nuclei consist of aggregates of interstellar dust particles less than ~1 μm in diameter and can produce rocky dust particles as a result of the sublimation of ice as comets enter the inner solar system. Samples of fine-grained particles known as chondritic porous interplanetary dust particles (CP-IDPs), possibly from comets, have been collected from the Earth's stratosphere. Owing to their fine-grained texture, these particles were previously thought to be condensates formed directly from interstellar gas. However, coarse-grained chondrule-like objects have recently been observed in samples from comet 81P/Wild 2. The chondrule-like objects are chemically distinct from chondrules in meteoritic chondrites, possessing higher MnO contents (0.5 wt%) in olivine and low-Ca pyroxene. In this study, we analyzed AMM samples by secondary electron microscopy and backscattered electron images for textural observations and compositional analysis. We identified thirteen AMMs with characteristics similar to those of the 81P/Wild 2 samples, and believe that recognition of these similarities necessitates reassessment of the existing models of chondrule formation.
Antarctic meteorites and the origin of planetesimals and protoplanets
Authors: Yamaguchi Akira 
Published: January 2013

AbstractAlmost all meteorites (about 99% by number) are samples from a few hundreds of asteroids that are leftover from planetesimals and protoplanets formed within several million years after the birth of the Solar System. These meteorites record detailed evolutionary history of dust to planets, including condensation, accretion, aqueous alteration, thermal metamorphism, partial and total melting.
225 GHz Atmospheric Opacity Measurements from Two Arctic Sites
Authors: Matsushita S. , Chen Ming-Tang , Martin-Cocher P. , Asada K. , Chen C.-P. , Inoue M. , Paine S. , Turner D. , Steinbring E. 
Published: January 2013

AbstractWe report the latest results of 225 GHz atmospheric opacity measurements from two Arctic sites; one on high coastal terrain near the Eureka weather station, on Ellesmere Island, Canada, and the other at the Summit Station near the peak of the Greenland icecap. This is a campaign to search for a site to deploy a new telescope for submillimeter Very Long Baseline Interferometry and THz astronomy in the northern hemisphere. Since 2011, we have obtained 3 months of winter data near Eureka, and about one year of data at Summit Station. The results indicate that these sites offer a highly transparent atmosphere for observations in submillimeter wavelengths. Summit Station is particularly excellent, and its zenith opacity at 225 GHz is statistically similar to the Atacama Large Milllimeter/submillimeter Array site in Chile. In winter, the opacity at Summit Station is even comparable to that observed at the South Pole.
Time domain astronomy from Dome C: results from ASTEP
Authors: Rivet J.-P. , Abe L. , Agabi K. , Barbieri M. , Crouzet N. , Goncalves I. , Guillot T. , Mekarnia D. , Szulagyi J. , Daban J.-B. , Gouvret C. , Fantei-Caujolle Y. , Schmider F.-X. , Furth T. , Erikson A. , Rauer H. , Fressin F. , Alapini A. , Pont F. , Aigrain S. 
Published: January 2013

AbstractASTEP (Antarctic Search for Transiting Exo Planets) is a research program funded mainly by French ANR grants and by the French Polar Institute (IPEV), dedicated to the photometric study of exoplanetary transits from Antarctica.The preliminary “pathfinder” instrument ASTEP–South is described in another communication (Crouzet et al., these proceedings), and we focus in this presentation on the main instrument of the ASTEP program: “ASTEP–400”, a 40 cm robotized and thermally-controlled photometric telescope operated from the French-Italian Concordia station (Dome C, Antarctica).ASTEP–400 has been installed at Concordia during the 2009-2010 summer campaign. Since, the telescope has been operated in nominal conditions during 2010 and 2011 winters, and the 2012 winterover is presently in progress. Data from the first two winter campaigns are available and processed. We give a description of the ASTEP–400 telescope from the mechanical, optical and thermal point of view. Control and software issues are also addressed. We end with a discussion of some astronomical results obtained with ASTEP–400.
Preliminary daytime seeing monitoring at Dome A, Antarctica
Authors: Pei Chong , Li Zhengyangg , Chen Hualin , Yuan Xiangyan 
Published: January 2013

AbstractSites on Antarctic plateau have unique atmospheric properties that make them better than any mid-latitude sites as observatory locations. From site testing measurements over 4 years on Dome A carried out by the Chinese Center for Antarctic Astronomy, we can reasonably predict that Dome A is as good as or even better than Dome C, which has been proved to be the best astronomical site by now, and suitable for high angular resolution observations. Seeing monitoring is necessary for planning large scale ground-based optical astronomical telescopes. In 2012, the 28th Chinese Antarctic Scientific Expedition carried out preliminary daytime seeing monitoring using a Differential Image Motion Monitor (DIMM) placed at a height of 3.5m. The median seeing was found to be 0.8″. This will be the foundation of future research that obtains comprehensive and long-period monitoring of the site's optical parameters.
Testing the bimodal distribution of long gamma-ray bursts in the cosmological rest-frame
Authors: Vásconez Christian , Vásquez Nicolás , López Ericson 
Published: January 2013

AbstractAmong the several methods of classifying gamma-ray bursts (GRBs), the duration parameter has lead to the canonical classification of GRBs of long and shorts. However, the canonical classification of bursts has recently seen the emergence of a third type of GRB, which is present in a recent large burst sample from the Swift observatory. The high redshifts and the cosmological distances are directly confirmed for long bursts only, while for the short ones there is only indirect evidence for their cosmological origin. Cosmological objects should not only be redshifted in energy but also extended in time because of the expansion of the Universe. Meanwhile, an anticorrelation between the hardness and the duration is found for this subclass in contrast to the short and the long groups (Horvath et al. (2010)). Despite the differences among these three groups, it is not yet clear whether the third group represents a physically different phenomenon. In this scenario, we want to study the bimodal distribution of long bursts, focusing their temporal properties in the source location (burst frame). We have determined a temporal estimator in the cosmological rest-frame from a sample of 60 Swift's GRBs. If GRBs are at cosmological distances, then the burst profiles should be stretched in time due to cosmological time dilation by an amount proportional to the redshift, 1 + z (Chang (2001)). Complementary, we use the hardness ratio between the soft emission (15–50keV) and hard X-ray emission (50–150keV) in order to analyze the bimodal distribution of long bursts in the time-energy plane.
Where is Ridge A?
Authors: Sims Geoff , Kulesa Craig , Ashley Michael C. B. , Lawrence Jon S. , Saunders Will , Storey John W. V. 
Published: January 2013

AbstractFirst identified in 2009 as the site with the lowest precipitable water vapour (PWV) and best terahertz transmission on Earth, “Ridge A” is located approximately 150 km south of Dome A, Antarctica. We use three years of data from the Microwave Humidity Sensor (MHS) on the NOAA-18 satellite and recent ground-based measurements from Ridge A to probe the PWV variations and stability over the high Antarctic plateau.
Solar Eclipses Observed from Antarctica
Authors: Pasachoff Jay M. 
Published: January 2013

AbstractAspects of the solar corona are still best observed during totality of solar eclipses, and other high-resolution observations of coronal active regions can be observed with radio telescopes by differentiation of occultation observations, as we did with the Jansky Very Large Array for the annular solar eclipse of 2012 May 20 in the US. Totality crossing Antarctica included the eclipse of 2003 November 23, and will next occur on 2021 December 4; annularity crossing Antarctica included the eclipse of 2008 February 7, and will next occur on 2014 April 29. Partial phases as high as 87% coverage were visible and were imaged in Antarctica on 2011 November 25, and in addition to partial phases of the total and annular eclipses listed above, partial phases were visible in Antarctica on 2001 July 2011, 2002 December 4, 2004 April 19, 2006 September 22, 2007 September 11, and 2009 January 26, and will be visible on 2015 September 13, 2016 September 1, 2017 February 26, 2018 February 15, and 2020 December 14. On behalf of the Working Group on Solar Eclipses of the IAU, the poster showed the solar eclipses visible from Antarctica and this article shows a subset (see www.eclipses.info for the full set). A variety of investigations of the Sun and of the response of the terrestrial atmosphere and ionosphere to the abrupt solar cutoff can be carried out at the future eclipses, making the Antarctic observations scientifically useful.
Photometry of Variables from Dome A, Antarctica
Authors: Wang Lingzhi , Macri L. M. , Wang L. , Ashley M. C. B. , Cui X. , Feng L. L. , Gong X. , Lawrence J. S. , Liu Q. , Luong-Van D. , Pennypacker C. R. , Shang Z. , Storey J. W. V. , Yang H. , Yang J. , Yuan X. , York D. G. , Zhou X. , Zhu Z. , Zhu Z. 
Published: January 2013

AbstractDome A on the Antarctic plateau is likely one of the best observing sites on Earth (Saunders et al. 2009). We used the CSTAR telescope (Yuan et al. 2008) to obtain time-series photometry of 104 stars with i>14.5 mag during 128 days of the 2008 Antarctic winter season (Wang et al. 2011). During the 2010 season we observed 2 × 104 stars with i>15 mag for 183 days (Wang et al. 2012). We detected a total of 262 variables, a 6 × increase relative to previous surveys of the same area and depth carried out from temperate sites (Pojmanski 2004). Our observations show that high-precision, long-term photometry is possible from Antarctica and that astronomically useful data can be obtained during 80% of the winter season.
Experimental Evaluation of Size-Dependent Predation by Adult Post-Spawned Rainbow Smelt on Larval Lake Whitefish
Authors: Gorsky Dimitry , Zydlewski Joseph 
Published: January 2013

Abstract
Introduced landlocked Rainbow Smelt Osmerus mordax are hypothesized to be a major factor in the decline of Lake Whitefish Coregonus clupeaformis populations in many lakes. We sought to identify the size of Lake Whitefish preyed upon by adult Rainbow Smelt and how the efficiency of Rainbow Smelt predation changes Lake Whitefish ontogeny. In a laboratory setting, we exposed larval Lake Whitefish of increasing sizes to groups of seven Rainbow Smelt (&gt;100 mm) for a 1-h period and observed predation behaviors and efficiencies. In each trial, the group of Rainbow Smelt consumed at least one larval Lake Whitefish, which were up to 45 mm in length (up to 89% of Rainbow Smelt gape width). Predation efficiency, the total number of Lake Whitefish consumed by Rainbow Smelt during trials, was 100% after Lake Whitefish hatching and followed a decreasing sigmoidal response to increasing lengths of Lake Whitefish. The apparent predatory window of Rainbow Smelt on Lake Whitefish is from Lake Whitefish size at hatch (∼12 mm) to approximately 34 mm. Rainbow Smelt generally required multiple attacks to capture a single Lake Whitefish. The capture efficiencies of Rainbow Smelt decreased from 30% as Lake Whitefish length increased and were highly variable within each Lake Whitefish size-group. The overall impact that Rainbow Smelt predation will have on Lake Whitefish populations is dependent on the growth rate of Lake Whitefish, environmental conditions that cause the Lake Whitefish hatching period to coincide with Rainbow Smelt spawning events, and the degree of overlap in habitat use between spawning Rainbow Smelt, nonspawning subadult Rainbow Smelt, and hatching Lake Whitefish.
Received August 29, 2011; accepted November 7, 2012