bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of the GDDSYN Method in the Era of KEPLER, CoRoT, MOST and BRITE
Authors: Mochnacki Stefan W. 
Published: April 2012

AbstractThe precision of observations using observatories in space exceeds by a factor of 100 the accuracy of the light curve and line profile synthesis methods developed decades ago. Furthermore, physical effects too small to detect using ground based observations, such as aberration and Doppler beaming, become important when observing from space.The GDDSYN method, developed by Hendry and Mochnacki, is both accurate and efficient, and is useful in the new context of space-based observations. Using a geodesic distribution of triangular surface elements varying little in size, it provides an alternative to the Wilson-Devinney code used at the heart of PHOEBE, and is adaptable to the new physical effects which are now observable. Tests and improvements are discussed.
New Light Curve Analysis for Large Numbers of Eclipsing Binaries III. SMC and Galactic Center
Authors: Kang Young-Woon , Hong Keong Soo , Rittipruk Pakakaew 
Published: April 2012

AbstractWe improved the method of light curve analysis for large numbers of eclipsing binaries. Current methods require a week to analyze the light curves of an eclipsing binary for its physical and orbital parameters. Therefore, we developed a new method to treat large numbers of light curves of eclipsing binaries. We tested the new method by analyzing more than 14 hundred light curves and 9 hundred light curves discovered by OGLE in the Small Magellanic Cloud and Galactic center, respectively.
Modelling Light Curves of Systems with Non-Circular Accretion Disks: KU Cyg
Authors: Zola S. , Szymanski T. 
Published: April 2012

AbstractWe present a code which can be used to simulate the light curve of a binary system harbouring a non-circular accretion disk, and show that such a system geometry can produce light curves with asymmetric minima and different heights of the maxima. We have applied this code to check for the possible existence of a non-circular accretion disk, as suggested by Smak & Plavec (1997), in the Algol-type binary KU Cyg. We compare the best solutions for two sets of multicolour light curves, obtained within circular and non-circular disk models.
The Long History of the Rossiter-McLaughlin Effect and its Recent Applications
Authors: Albrecht Simon 
Published: April 2012

AbstractIn this talk I will review the Rossiter-McLaughlin (RM) effect; its history, how it manifests itself during stellar eclipses and planetary transits, and the increasingly important role its measurements play in guiding our understanding of the formation and evolution of close binary stars and exoplanet systems.
The BANANA Survey: Spin-Orbit Alignment in Binary Stars
Authors: Albrecht Simon , Winn J. N. , Fabrycky D. C. , Torres G. , Setiawan J. 
Published: April 2012

AbstractBinaries are not always neatly aligned. Previous observations of the DI Herculis system showed that the spin axes of both stars are highly inclined with respect to one another and the orbital axis. Here, we report on our ongoing survey to measure relative orientations of spin-axes in a number of eclipsing binary systems.These observations will hopefully lead to new insights into star and planet formation, as different formation scenarios predict different degrees of alignment and different dependencies on the system parameters. Measurements of spin-orbit angles in close binary systems will also create a basis for comparison for similar measurements involving close-in planets.
VO-KOREL: A Fourier Disentangling Service of the Virtual Observatory
Authors: Škoda Petr , Hadrava Petr , Fuchs Jan 
Published: April 2012

AbstractVO-KOREL is a web service exploiting the technology of the Virtual Observatory for providing astronomers with the intuitive graphical front-end and distributed computing back-end running the most recent version of the Fourier disentangling code KOREL.The system integrates the ideas of the e-shop basket, conserving the privacy of every user by transfer encryption and access authentication, with features of laboratory notebook, allowing the easy housekeeping of both input parameters and final results, as well as it explores a newly emerging technology of cloud computing.While the web-based front-end allows the user to submit data and parameter files, edit parameters, manage a job list, resubmit or cancel running jobs and mainly watching the text and graphical results of a disentangling process, the main part of the back-end is a simple job queue submission system executing in parallel multiple instances of the FORTRAN code KOREL. This may be easily extended for GRID-based deployment on massively parallel computing clusters.The short introduction into underlying technologies is given, briefly mentioning advantages as well as bottlenecks of the design used.
Towards a Theory for the Atmospheres, Structure, and Evolution of Giant Exoplanets
Authors: Burrows Adam 
Published: April 2012

AbstractIn this short review, I summarize some of the salient features of the emerging theory of exoplanets in general, and of giant exoplanets in particular. A focus is on the characterization of transiting planets at primary and secondary eclipse, but various other related topics are covered, if only briefly. A theme that clearly emerges is that a vibrant new science of comparative exoplanetology is being born.
Variability of Young Massive Stars in the Arches Cluster
Authors: Markakis K. , Bonanos A. Z. , Pietrzynski G. , Macri L. , Stanek K. Z. 
Published: April 2012

AbstractWe present preliminary results of the first near-infrared variability study of the Arches cluster, using adaptive optics data from NIRI/Gemini and NACO/VLT. The goal is to discover eclipsing binaries in this young (2.5 ± 0.5 Myr), dense, massive cluster for which we will determine accurate fundamental parameters with subsequent spectroscopy. Given that the Arches cluster contains more than 200 Wolf-Rayet and O-type stars, it provides a rare opportunity to determine parameters for some of the most massive stars in the Galaxy.
Photoionization Models of the Eskimo Nebula: Evidence for a Binary Central Star?
Authors: Danehkar A. , Frew D. J. , Parker Q. A. , De Marco O. 
Published: April 2012

AbstractThe ionizing star of the planetary nebula NGC 2392 is too cool to explain the high excitation of the nebular shell, and an additional ionizing source is necessary. We use photoionization modeling to estimate the temperature and luminosity of the putative companion. Our results show it is likely to be a very hot (Teff ≃ 250 kK), dense white dwarf. If the stars form a close binary, they may merge within a Hubble time, possibly producing a Type Ia supernova.
Magnetic Activity of Two Similar Subgiants in Binaries with Very Different Mass Ratios: EI Eri and V711 Tau
Authors: Oláh Katalin , Kővári Zsolt , Vida Krisztián , Strassmeier Klaus G. 
Published: April 2012

AbstractWe use more than three decades-long photometry to study the activity patterns on the two fast-rotating subgiant components in EI Eri (G5IV) and V711 Tau (K1IV). From yearly mean rotational periods from the light curves, we find that EI Eri, with well-measured solar-type differential rotation, always has spots from the equator to high latitudes. The measured differential rotation of V711 Tau is controversial, and in any case is very small. The spots on the K1IV star in V711 Tau seem to be tidally locked. The physical parameters of the two systems are similar, with one remarkable difference: EI Eri has a low mass M4-5 dwarf companion, whereas V711 Tau has a G5V star in the system, thus their mass centers are in very different positions. This may modify the whole internal structure of the active stars, causing marked differences in their surface features.
Structure Coefficients for Use in Stellar Analysis
Authors: Inlek Gulay , Budding Edwin 
Published: April 2012

AbstractWe give new values of the structural coefficients ηj, and related quantities, for realistic models of distorted stars in close binary systems. Our procedure involves numerical integration of Radau's equation for detailed structural data for stellar models taken from the EZWeb compilation of the Department of Astronomy, University of Wisconsin-Madison.
The Coming Water Crisis: A Common Concern of Humankind
Authors: Weiss Edith Brown 
Published: April 2012

AbstractThis essay argues that fresh water, its availability and use, should now be recognized as ‘a common concern of humankind’, much as climate change was recognized as a ‘common concern of humankind’ in the1992United Nations Framework Convention on Climate Change, and conservation of biodiversity was recognized as a ‘common concern of humankind’ in the1992Convention on Biological Diversity. This would respond to the many linkages between what happens in one area with the demand for and the supply of fresh water in other areas. It would take into account the scientific characteristics of the hydrological cycle, address the growing commodification of water in the form of transboundary water markets and virtual water transfers through food production and trade, and respect the efforts to identify a human right to water.
Seasonal to decadal scale variations in the surface velocity of Jakobshavn Isbrae, Greenland: Observation and model‐based analysis
Authors: Joughin Ian , Smith Ben E. , Howat Ian M. , Floricioiu Dana , Alley Richard B. , Truffer Martin , Fahnestock Mark 
Published: April 2012

Using new data, we build upon the nearly two‐decade long record of observations from Jakobshavn Isbrae to investigate the processes driving its dynamic evolution. While winter flow speed has not increased substantially over the last three winters, there remains a strong seasonal variation in flow speed that coincides with a cycle of summer thinning and winter thickening. We relate changes in glacier speed to geometry through variations in basal traction and horizontal stresses, using ice‐flow models constrained by satellite and airborne observations. These results suggest that the bed provides little flow resistance along the main trough within about 20 km of the terminus. While the loss of buttressing from the retreat of grounded and floating ice likely contributed to the initial speedup, other processes are of comparable significance at seasonal to decadal time scales. From analysis of the models, we hypothesize that thinning‐induced change in basal effective pressure is the dominant process influencing near‐terminus behavior, while diffusive processes drive the upstream response. The apparent need for the terminus to thin to near flotation before it can calve may limit the rate at which retreat occurs. Our analysis of the processes controlling the speed suggests little potential for further large acceleration. Thinning and elevated speeds may continue at rates similar to present, however, putting the glacier on course to retreat to the head of its deep trough in about a century, at which point it likely would stabilize with a thinner terminus.
Replacement of Menhaden Fish Meal Protein by Solvent-Extracted Soybean Meal Protein in the Diet of Juvenile Black Sea Bass Supplemented with or without Squid Meal, Krill Meal, Methionine, and Lysine
Authors: Alam Md Shah , Watanabe Wade O , Sullivan Katherine B , Rezek Troy C , Seaton Pamela J 
Published: April 2012

Abstract
Three experiments were conducted to determine the extent to which menhaden fish meal protein (FMP) can be replaced by solvent-extracted soybean meal protein (SBP) in the diet of juvenile black sea bass Centropristis striata. Diets were formulated replacing FMP by SBP at 0, 10, 20, 30, 40, 50, and 60% (experiment 1) and 0, 60, 70, 80, 90, and 100% (experiment 2), with supplementation with squid meal, krill meal, and attractants in both experiments. Experiment 3 was designed to replace FMP by SBP at 40, 50, 60, 70, and 80% without supplemental squid and krill meal and at 60% and 70% with supplemental methionine and lysine. Diets were fed twice daily to triplicate groups of fish (N = 15 per group) in 75-L tanks containing recirculating seawater. Fish were fed for 6, 10, and 8 weeks in experiments 1, 2, and 3, respectively. No significant differences in body weight gain, feed efficiency, and survival were observed among treatments in experiment 1. In experiment 2, no significant differences in percent weight gain were observed among fish fed diets replacing FMP at 0, 60, and 70%. In experiment 3, body weight gain was not significantly different for fish fed supplemental methionine and lysine in 70% SBP diets compared with fish fed 0% SBP diets. No significant differences were observed in whole-body n-3 polyunsaturated fatty acids among treatments in experiment 2. Broken-line regression of the specific growth rate data suggested that the maximum level of FMP replacement with SBP in black sea bass diets was 67.6–68.4% with 75 g/kg squid meal and 50 g/kg krill meal in the diet and 57.2–58.0% without squid and krill meal supplementation.
Knowledge, risk perception and behaviours in swimming pool users of Palermo city, Sicily
Authors: Amodio Emanuele , Costantino Claudio , Asciutto Rosario , Dino Claudia , Bianco Antonino , Maringhini Guido , Mammina Caterina , Calamusa Giuseppe 
Published: April 2012

AbstractTo assess knowledge, risk perception and behaviours of a sample of swimming pool users in Palermo. A total of 498 subjects were interviewed by self‐administered anonymous questionnaire including socio‐demographic questions, knowledge/risk perception and behaviours. Overall, 289 subjects (58%) had a mean of 1.9±1.2 healthy behaviours. Age older than 30 years (OR=0.46; 95% CI=0.26–0.81), female sex (OR=0.52; 95% CI=0.35–0.76) and a high knowledge score (OR=0.15; 95% CI=0.03–0.69) were significantly associated with having healthy behaviours in both univariate and multivariate analysis. Unhealthy behaviours can be frequently found in swimming pool bathers and, particularly, in some target groups. Public health prevention strategies should be implemented to improve public awareness and information on a safe use of recreational water environments.
A pilot study of the Incredible Years BASIC parenting programme with bereaved families
Authors: Braiden Hannah‐Jane , McDaniel Benny , Duffy Joseph , McCann Monica 
Published: April 2012

PurposeBereaved parents often face the complex situation of managing their own grief while parenting bereaved children who are at increased risk of social, emotional and behavioural difficulties. The current evaluation was a pilot study aimed at determining the feasibility of the Incredible Years (IY) BASIC parenting programme as an intervention for bereaved families.Design/methodology/approachA total of seven parents of children (aged four to 12) participated in a 12‐week IY BASIC parenting programme. Participants completed a range of pre‐intervention, post‐intervention, six month follow‐up measures and semi‐structured interviews.FindingsThe results showed statistically significant reductions in parental stress, parental wellbeing, child behaviour problems, and grief.Originality/valueThere is strong evidence for the effectiveness of IY with diverse parenting populations but this is the first known study of the programme with bereaved families. The findings support its use with such families where child behaviour is a concern.
The relationship between anogenital distance and azoospermia in adult men
Authors: Eisenberg Michael L. , Shy Michael , Chanc Walters R. , Lipshultz Larry I. 
Published: April 2012

SummaryAnogenital distance (AGD) is a marker for endocrine disruption in animal studies in which decreased male AGD has been associated with testicular dysfunction. The objective of the study was to investigate whether anogenital distance could distinguish men with obstructive azoospermia (OA) from those with nonobstructive azoospermia (NOA). To accomplish this, azoospermic men were recruited and evaluated at a men’s reproductive health clinic in Houston, TX. Anogenital distance (the distance from the posterior aspect of the scrotum to the anal verge) and penile length (PL) were measured using digital calipers. Testis size was estimated by physical examination. Logistic regression was used to compare AGD lengths in men with OA and men with NOA. A total of 69 OA men (mean age: 44.2 ± 9.2) and 29 NOA men (mean age: 32.8 ± 4.8) were recruited. The NOA men possessed significantly shorter mean AGD than the men with OA (AGD: 36.3 vs. 41.9 mm, p = 0.01). An AGD of less than 30 mm, had a 91% specificity in accurately classifying NOA. Moreover, after adjustment for age, race, and BMI, an AGD of less than 30 mm yielded a significantly increased odds of NOA compared to OA (OR 5.6, 95% CI 1.0, 30.7). In summary, AGD may provide a novel metric for assessing testicular function in men and in distinguishing OA from NOA.
Exploratory chemometric analysis for the characterisation of Tunisian olive cultivars according to their lipid and sterolic profiles
Authors: Kammoun Naziha G. , Zarrouk Wissem 
Published: April 2012

SummaryThis study aims to evaluate some Tunisian olive genetic resources using fatty acid, triacyglycerol and sterolic compositions and to classify the cultivars according to their fruit genotype and to their respective geographical origin (North, Centre and South). manova results showed that the studied cultivars presented highly significant differences regarding all the variables (P < 0.01). The most discriminant variables of fatty acids are C17:1 (F = 98.468), C16:0 (F = 92.994), C18:1 (F = 60.865), C18:1/C18:2 (F = 44.632) and C18:2 (F = 40.167); those of triacylglycerols are POP (F = 123.34), LLL (F = 122.944), LnLO (F = 98.363), POO (F = 93.357) and LOO (F = 90.42), while sitostanol (F = 289.171), campestanol (F = 192.792) and campesterol (F = 160.724) have the higher discriminant power among sterol compounds. Principal component analysis (PCA) was performed on the data of each chemical parameter to explore their usefulness for the discrimination of eleven monovarietal olive oils. Best differentiations among cultivars were obtained with triacyglycerol and sterolic compositions. The spatial distribution of the different oil samples using all the collected data showed a good discrimination among olive cultivars. A strong resolution between the samples according to the geographical origin was obtained by means of factorial discriminant analysis (FDA) (λ = 0.002). Comparisons of the distances between classes were statistically significant (Fisher tests; P < 0.0001), and 90.91% of cross‐validated grouped cases are correctly classified. The obtained results could become an important tool for sorting out oils to a single cultivar or to a specific geographical area.
Utilisation of modified atmosphere packaging to extend the shelf life of Khalas fresh dates
Authors: Al‐Eid Salah M. , Barber Andrew R. , Rettke Michael , Leo Annunziata , Alsenaien Waleed A. , Sallam Abdulkader A. 
Published: April 2012

SummaryCompletely matured tamr stage dates are widely available and consumed throughout the year. However, for some date varieties, the earlier khalal stage crunchy fruit is considered a premium product. This work examines the use of modified atmosphere packaging to extend the shelf life of khalal dates under refrigerated conditions. Modified atmosphere packaging with 10% or 20% CO2 in air was successful in reducing the rate of the ripening processes while control‐packaged dates showed signs of ripening development such as significant weight loss and darkening in date colour (identified visually and as low lactic acid bacteria measurements at 18 and 27 days after packaging), similar to that observed in tamr stage fruit.
Phenological associations of within‐ and among‐plant variation in gender with floral morphology and integration in protandrous Delphinium glaucum
Authors: Ishii Hiroshi S. , Harder Lawrence D. 
Published: April 2012

Summary1. Flowering‐time differences within and among protandrous, hermaphroditic plants shift the floral sex ratio from male‐ to female‐dominated during a population’s flowering season. This dynamic should induce negative frequency‐dependent selection favouring relatively greater investment of resources and time in female function by early flowers and early‐flowering plants than by late flowers and late‐flowering individuals. In contrast, selection for floral integration to facilitate pollen export and import should limit floral variation.2. We assessed these contrasting expectations for the protandrous Delphinium glaucum by considering the relation of variation and covariation in the lengths of perianth segments, anther and ovule number, and male‐ and female‐phase duration for flowers at three positions within inflorescences to the first flowering date, mean gender and size of 34 plants.3. Reproductive phenotypes varied among and within plants in association with a shift in population floral sex ratio from male‐ to female‐biased, but not with plant size. Early‐flowering plants had female‐biased phenotypic gender and smaller flowers with fewer anthers per ovule and shorter male phases than late‐flowering plants. Within individuals, earlier (lower) flowers were larger with higher female effort, in terms of both the relative production of ovules and anthers and the relative durations of female and male phases, than later (upper) flowers. Overall, these results are more consistent with the expectations of negative frequency‐dependent selection than with proximate resource allocation.4. Correlations among floral traits indicated significant floral integration. However, these correlations weakened from lower to upper flowers, suggesting that the patterns of intra‐individual variation limit the extent of integration.5. Synthesis. Reproductive phenotypes that incorporate systematic among‐flower variation and vary consistently among individuals with flowering time, such as those exhibited by D. glaucum, may be typical of dichogamous species with multi‐flowered inflorescences. Such diversity within and among plants should result from a combination of density‐dependent selection against simultaneous flowering of individuals and frequency‐dependent selection favouring emphasis on the least common sex role during specific stages of the flowering season, both facilitated by the positive assortative mating that accompanies asynchronous flowering among individuals.