bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of New High Oleic Virginia-Type Peanut Cultivars for Disease Tolerance, Yield, and Quality
Authors: Mehl H.L. 
Published: July 2017

ABSTRACT
As new cultivars are developed and released by peanut breeding programs, their levels of tolerance to common diseases and the overall profitability of production needs to be determined. Virginia-type peanut cultivars were evaluated for disease resistance/tolerance, yield, and quality when grown under different fungicide programs and in locations varying in disease pressure. Cultivars included a disease susceptible (CHAMPS) and tolerant (Bailey) cultivar and two new high-oleic cultivars, Sullivan and Wynne. Fungicide programs consisted of a leaf spot program, a leaf spot plus Cylindrocladium black rot (CBR) program, a leaf spot plus Sclerotinia blight program, or an untreated check. Cultivars and fungicide programs were arranged in a randomized split-plot design with fungicide treatments in 16-row main plots and cultivars in 4-row subplots. Disease incidence and severity varied among growing seasons and the five fields where experiments were conducted. Overall, Sullivan had good leaf spot tolerance and both Sullivan and Bailey had Sclerotinia and CBR tolerance. All cultivars yielded well in the absence of disease pressure, but Sullivan was consistently the highest yielding cultivar. Grade characteristics varied among cultivars, but while fungicide treatments impacted yield, they had little effect on grade. Net value and profitability of different fungicide programs varied by experiment, but overall Sullivan had the highest net value regardless of fungicide program. Due to slightly higher disease tolerance compared to Bailey, good agronomic characteristics, high yield and quality under a variety of growing environments, and the presence of the high-oleic trait, Sullivan is an excellent cultivar for Virginia-type peanut production in the Virginia-Carolina region.
The Influence of Nozzle Type on Peanut Weed Control Programs
Authors: Carter O.W. , Prostko E.P. , Davis J.W. 
Published: July 2017

ABSTRACT
The increase in herbicide-resistant weeds over the past decade has led to the introduction of crops that are resistant to auxin herbicides. Strict application procedures are required for the use of auxin herbicides in auxin-resistant crops to minimize off-target movement. One requirement for application is the use of nozzles that will minimize drift by producing coarse droplets. Generally, an increase in droplet size can lead to a reduction in coverage and efficacy depending upon the herbicide and weed species. In studies conducted in 2015 and 2016, two of the potential required auxin nozzle types [(AIXR11002 (coarse) and TTI11002 (ultra-coarse)] were compared to a conventional flat-fan drift guard nozzles [DG11002 (medium)] for weed control in peanut herbicide systems. Nozzle type did not influence annual grass or Palmer amaranth control in non-crop tests. Results from in-crop tests indicated that annual grass control was 5% to 6% lower when herbicides were applied with the TTI nozzle when compared to the AIXR or DG nozzles. However, Palmer amaranth control and peanut yield was not influenced by coarse-droplet nozzles. Peanut growers using the coarse-droplet nozzles need to be aware of potential reduced grass control.
High growth temperatures and high soil nitrogen do not alter differences in CO2 assimilation between invasive Phalaris arundinacea (reed canarygrass) and Carex stricta (tussock sedge)
Authors: Waring Elizabeth F. , Holaday A. Scott 
Published: July 2017

PREMISE OF THE STUDY:Global change in temperature and soil nitrogen availability could affect plant community composition, potentially giving an advantage to invasive species compared to native species. We addressed how high temperatures affected CO2 assimilation parameters for invasive Phalaris arundinacea and a sedge, Carex stricta, it displaces, in natural and controlled environments.METHODS:Photosynthetic parameters were measured in a wetland in Indiana, USA during the abnormally warm year of 2012. In a growth chamber, photosynthetic parameters were measured on the plants grown under three levels of nitrogen and exposed to optimum temperatures followed by 2012‐like summer conditions and then hot temperatures with an autumn‐like photoperiod.KEY RESULTS:In the wetland, C. stricta exhibited signs of midsummer leaf senescence, whereas P. arundinacea maintained CO2 assimilation at ambient pCO2 (Aamb) through mid‐October. In the chamber, 2012‐like conditions reduced Aamb for both species through reductions in maximum carboxylation (Vcmax) and electron transport (Jmax) without further change during subsequent hot, autumn‐like conditions, whereas the quantum efficiency of carbon assimilation (qe) declined throughout the experiment. However, P. arundinacea had higher values of Aamb, Jmax, and qe than C. stricta. A general, the positive effect of increasing nitrogen availability occurred for photosynthetic processes for both species in hot conditions.CONCLUSIONS:Our data suggest that C. stricta is more susceptible to excessive light stress than P. arundinacea during hot, sunny periods, leading to leaf senescence. Field confirmation of this idea is needed, but frequent heat waves should favor P. arundinacea over C. stricta with or without eutrophication.
Haffner 16 Redux: Revisiting a Young Cluster in the Outer Galaxy*

†
Authors: Davidge T. J. 
Published: July 2017

Abstract
Images and spectra recorded with the Gemini Multi-Object Spectrograph on Gemini South are used to investigate the stellar content of the open cluster Haffner 16. The

color–magnitude diagram (CMD) constructed from these data extends over 10 mag in

, sampling the cluster main sequence (MS) and 5 mag of the pre-MS (PMS). The fraction of unresolved equal mass binaries among PMS stars is estimated to be 0.6 ± 0.1. The isochrones do not track the PMS on the CMD, in the sense that the PMS has a shallower slope on the CMD than predicted by the models. Still, a dip in star counts, which is associated with the relaxation of PMS stars onto the MS, is identified near

. The depth and brightness of this feature—as well as the morphology of the cluster MS on the CMD—are matched by models with a slightly sub-solar metallicity that have an age of ∼20 Myr and a distance modulus of 12.3 ± 0.2. A light profile of Haffner 16 is constructed in the W1 filter (

), which suggests that the cluster is surrounded by a diffuse stellar halo. Spectra of candidate cluster MS and PMS stars selected according to location on the CMD are presented. The spectra show characteristics that are suggestive of a sub-solar metallicity. Hα emission is common among objects on the PMS locus on the CMD near

. It is suggested that the location of the Haffner 16 PMS on the CMD is affected by large-scale cool spot activity, likely induced by rapid stellar rotation.
Small Jupiter Trojans Survey with the Subaru/Hyper Suprime-Cam*
Authors: Yoshida Fumi , Terai Tsuyoshi 
Published: July 2017

Abstract
We observed the L4 Jupiter Trojans (JTs) swarm using the Hyper Suprime-Cam attached to the 8.2 m Subaru Telescope on 2015 March 30 (UT). The survey covered ∼26 deg2 of sky area near the opposition and around the ecliptic plane with a 240 s exposure time in the r-band filter through the entire survey. We detected 631 L4 JTs in the survey field with a detection limit of m

r
= 24.4 mag. We selected 481 objects with absolute magnitude H

r
< 17.4 mag and heliocentric distance r < 5.5 au as an unbiased sample and then used them to estimate the size distribution. Assuming a geometric albedo of 0.07, the size range of our unbiased sample is ∼2–20 km in diameter (D). We fit a single-slope power law to the cumulative size distribution and found that the best-fit index (b) is b = 1.84 ± 0.05 in

. The slope value (α) of the corresponding absolute magnitude distribution (

) is 0.37 ± 0.01. This α is consistent with that of the faint-end slope presented by Wong & Brown. The size distribution obtained from this survey is slightly different from the results of previous surveys with a similar size range, which reported broken power-law or double power-law slopes in their cumulative size distribution. Our results insist that the slope of b = 1.84 continues from H = 14.0 to at least H = 17.4. Since this work contains the largest L4 JT samples and is 1 mag deeper than the study by Wong & Brown, we believe that our study has obtained the most robust size distribution of small JTs so far. Combining the cataloged L4 JTs and our survey, we show the entire size distribution of L4 JTs up to H

r
= 17.4 mag.
ALMA Observations of N83C in the Early Stage of Star Formation in the Small Magellanic Cloud
Authors: Muraoka Kazuyuki , Homma Aya , Onishi Toshikazu , Tokuda Kazuki , Harada Ryohei , Morioka Yuuki , Zahorecz Sarolta , Saigo Kazuya , Kawamura Akiko , Mizuno Norikazu , Minamidani Tetsuhiro , Muller Erik , Fukui Yasuo , Meixner Margaret , Indebetouw Remy , Sewiło Marta , Bolatto Alberto 
Published: July 2017

Abstract
We have performed Atacama Large Millimeter/submillimeter Array (ALMA) observations in the 12CO(

), 13CO(

), C18O(

), 12CO(

), 13CO(

), and CS(

) lines toward the active star-forming region N83C in the Small Magellanic Cloud (SMC), whose metallicity is about one-fifth of the Milky Way (MW). The ALMA observations first reveal subparsec-scale molecular structures in 12CO(

) and 13CO(

) emissions. We found strong CO peaks associated with young stellar objects (YSOs) identified by the Spitzer Space Telescope, and we also found that overall molecular gas is distributed along the edge of the neighboring

ii region. We derived a gas density of

cm−3 in molecular clouds associated with YSOs based on the virial mass estimated from the 12CO(

) emission. This high gas density is presumably due to the effect of the

ii region under the low-metallicity (and accordingly small-dust content) environment in the SMC; far-UV radiation from the

ii region can easily penetrate and photodissociate the outer layer of 12CO molecules in the molecular clouds, and thus only the innermost parts of the molecular clouds are observed even in 12CO emission. We obtained the CO-to-H2 conversion factor

of

cm−2 (K km s−1)−1 in N83C based on virial masses and CO luminosities, and it is four times larger than that in the MW, 2

cm−2 (K km s−1)−1. We also discuss the difference in the nature between two high-mass YSOs, each of which is associated with a molecular clump with a mass of about a few

.
Polarized Line Formation in Arbitrary Strength Magnetic Fields Angle-averaged and Angle-dependent Partial Frequency Redistribution
Authors: Sampoorna M. , Nagendra K. N. , Stenflo J. O. 
Published: July 2017

Abstract
Magnetic fields in the solar atmosphere leave their fingerprints in the polarized spectrum of the Sun via the Hanle and Zeeman effects. While the Hanle and Zeeman effects dominate, respectively, in the weak and strong field regimes, both these effects jointly operate in the intermediate field strength regime. Therefore, it is necessary to solve the polarized line transfer equation, including the combined influence of Hanle and Zeeman effects. Furthermore, it is required to take into account the effects of partial frequency redistribution (PRD) in scattering when dealing with strong chromospheric lines with broad damping wings. In this paper, we present a numerical method to solve the problem of polarized PRD line formation in magnetic fields of arbitrary strength and orientation. This numerical method is based on the concept of operator perturbation. For our studies, we consider a two-level atom model without hyperfine structure and lower-level polarization. We compare the PRD idealization of angle-averaged Hanle–Zeeman redistribution matrices with the full treatment of angle-dependent PRD, to indicate when the idealized treatment is inadequate and what kind of polarization effects are specific to angle-dependent PRD. Because the angle-dependent treatment is presently computationally prohibitive when applied to realistic model atmospheres, we present the computed emergent Stokes profiles for a range of magnetic fields, with the assumption of an isothermal one-dimensional medium.
Discovery of the First Quadruple Gravitationally Lensed Quasar Candidate with Pan-STARRS
Authors: Berghea C. T. , Nelson George J. , Rusu C. E. , Keeton C. R. , Dudik R. P. 
Published: July 2017

Abstract
We report the serendipitous discovery of the first gravitationally lensed quasar candidate from Pan-STARRS. The grizy images reveal four point-like images with magnitudes between 14.9 and 18.1 mag. The colors of the point sources are similar, and they are more consistent with quasars than with stars or galaxies. The lensing galaxy is detected in the izy bands, with an inferred photometric redshift of ∼0.6, lower than that of the point sources. We successfully model the system with a singular isothermal ellipsoid with shear, using the relative positions of the five objects as constraints. While the brightness ranking of the point sources is consistent with that of the model, we find discrepancies between the model-predicted and observed fluxes, likely due to microlensing by stars and millilensing due to the dark matter substructure. In order to fully confirm the gravitational lens nature of this system and add it to the small but growing number of the powerful probes of cosmology and astrophysics represented by quadruply lensed quasars, we require further spectroscopy and high-resolution imaging.
Hα Intensity Map of the Repeating Fast Radio Burst FRB 121102 Host Galaxy from Subaru/Kyoto 3DII AO-assisted Optical Integral-field Spectroscopy*
Authors: Kokubo Mitsuru , Mitsuda Kazuma , Sugai Hajime , Ozaki Shinobu , Minowa Yosuke , Hattori Takashi , Hayano Yutaka , Matsubayashi Kazuya , Shimono Atsushi , Sako Shigeyuki , Doi Mamoru 
Published: July 2017

Abstract
We present the Hα intensity map of the host galaxy of the repeating fast radio burst FRB 121102 at a redshift of z = 0.193 obtained with the AO-assisted Kyoto 3DII optical integral-field unit mounted on the 8.2 m Subaru Telescope. We detected a compact Hα-emitting (i.e., star-forming) region in the galaxy, which has a much smaller angular size (

(1.9 kpc) at full width at half maximum (FWHM)) than the extended stellar continuum emission region determined by the Gemini/GMOS

-band image (

(4.6 kpc) at FWHM with ellipticity

). The spatial offset between the centroid of the Hα emission region and the position of the radio bursts is

(0.26 ± 0.07 kpc), indicating that FRB 121102 is located within the star-forming region. This close spatial association of FRB 121102 with the star-forming region is consistent with expectations from young pulsar/magnetar models for FRB 121102, and it also suggests that the observed Hα emission region can make a major dispersion measure (DM) contribution to the host galaxy DM component of FRB 121102. Nevertheless, the largest possible value of the DM contribution from the Hα emission region inferred from our observations still requires a significant amount of ionized baryons in intergalactic medium (IGM; the so-called “missing” baryons) as the DM source of FRB 121102, and we obtain a 90% confidence level lower limit on the cosmic baryon density in the IGM in the low-redshift universe as

.
Image-optimized Coronal Magnetic Field Models
Authors: Jones Shaela I. , Uritsky Vadim , Davila Joseph M. 
Published: July 2017

Abstract
We have reported previously on a new method we are developing for using image-based information to improve global coronal magnetic field models. In that work, we presented early tests of the method, which proved its capability to improve global models based on flawed synoptic magnetograms, given excellent constraints on the field in the model volume. In this follow-up paper, we present the results of similar tests given field constraints of a nature that could realistically be obtained from quality white-light coronagraph images of the lower corona. We pay particular attention to difficulties associated with the line-of-sight projection of features outside of the assumed coronagraph image plane and the effect on the outcome of the optimization of errors in the localization of constraints. We find that substantial improvement in the model field can be achieved with these types of constraints, even when magnetic features in the images are located outside of the image plane.
Cosmological Constraints from the Redshift Dependence of the Volume Effect Using the Galaxy 2-point Correlation Function across the Line of Sight
Authors: Li Xiao-Dong , Park Changbom , Sabiu Cristiano G. , Park Hyunbae , Cheng Cheng , Kim Juhan , Hong Sungwook E. 
Published: July 2017

Abstract
We develop a methodology to use the redshift dependence of the galaxy 2-point correlation function (2pCF) across the line of sight,

, as a probe of cosmological parameters. The positions of galaxies in comoving Cartesian space varies under different cosmological parameter choices, inducing a redshift-dependent scaling in the galaxy distribution. This geometrical distortion can be observed as a redshift-dependent rescaling in the measured

. We test this methodology using a sample of 1.75 billion mock galaxies at redshifts 0, 0.5, 1, 1.5, and 2, drawn from the Horizon Run 4 N-body simulation. The shape of

can exhibit a significant redshift evolution when the galaxy sample is analyzed under a cosmology differing from the true, simulated one. Other contributions, including the gravitational growth of structure, galaxy bias, and the redshift space distortions, do not produce large redshift evolution in the shape. We show that one can make use of this geometrical distortion to constrain the values of cosmological parameters governing the expansion history of the universe. This method could be applicable to future large-scale structure surveys, especially photometric surveys such as DES and LSST, to derive tight cosmological constraints. This work is a continuation of our previous works as a strategy to constrain cosmological parameters using redshift-invariant physical quantities.
La médiation numérique : renouvellement et diversification des pratiques
Authors: Bertho Raphaële , Riboni Ulrike 
Published: July 2017

Les questionnements théoriques et méthodologiques portant sur le nécessaire repositionnement du chercheur en milieu « médiatico numérique » ont été au centre de l’élaboration du programme de recherche pluridisciplinaire Mémoires visuelles , portant sur la production et la circulation en ligne des images audiovisuelles liées à des mobilisations sociales dans le monde contemporain. Il s’agit ainsi de proposer de renouveler les protocoles d’enquête en usant des moyens numériques afin d’identifier les sources d’une part, soit ici les productions audiovisuelles liées aux mobilisations sociales, et d’établir un dialogue avec les acteurs d’autre part, ici les producteurs des vidéos et les acteurs des mobilisations, est également nécessaire. Une double ambition à laquelle vont répondre plus spécifiquement deux parties du programme de recherche. La première est la volonté de mettre en place un outil de catalogage collaboratif des vidéos en ligne, qui répondra à la nécessité première d’identifier les sources en faisant appel à la mise en commun des connaissances et savoirs. Ce catalogue en ligne sera lié à une plateforme de publication des recherches en cours, laquelle aura pour caractéristique d’être publique et ouverte, dans une volonté de susciter un dialogue avec les acteurs des mobilisations sociales comme avec les chercheurs travaillant sur d’autres terrains de recherche ou dans d’autres disciplines.
La médiation numérique : renouvellement et diversification des pratiques
Authors: Canet Florence 
Published: July 2017

La veille est défi nie par une norme AFNOR (AFNOR, 1998) qui la modélise comme un processus de sept étapes qui nécessite obligatoirement une formulation de la demande et se finalise par la communication d’un produit. Malgré cette normalisation et le fait que cette activité soit exercée par de nombreux professionnels, elle reste encore complexe à cerner. Prenant acte du manque d’études empiriques dans le domaine, nos travaux se proposent de questionner les usages de veilleurs professionnels selon deux axes, informationnel et communicationnel. Nos premiers entretiens exploratoires indiquent une diversification des profils de veilleurs et des types de stratégies de surveillance d’un environnement numérique dense. Le processus de veille tel qu’il est défi ni par l’AFNOR ne semble plus suffire pour décrire les pratiques des veilleurs passeurs qui font circuler l’information vers des « lecteurs » qui n’en ont pas formulé le besoin, et qui s’adaptent aux contraintes temporelles et matérielles de leur public.
La médiation numérique : renouvellement et diversification des pratiques
Authors: Labelle Sarah , Seurrat Aude 
Published: July 2017

Notre article interroge les spécificités des serious game comme dispositifs de médiation des savoirs. Il se fonde sur une expérience de conception d’un serious game dans le cadre du programme de Recherche et Innovation ManEGe (Management Energy Game). Après avoir mis à distance les discours naturalisants et euphoriques qui voient dans la « gamification » une panacée pédagogique, l’article propose de détailler en quoi les définitions de l’univers du jeu, du récit et du gameplay constituent autant d’étapes qui jalonnent la réécriture des savoirs au sein d’un serious game . L’article porte plus spécifiquement sur les médiations documentaires afin de souligner l’importance de la réécriture des savoirs dans la conception d’un serious game et illustre plus précisément ce propos à partir de deux ressources documentaires centrales dans ManEGe : les dialogues et les cartes. De ce fait, il permet d’interroger les modalités de transformation du statut des documents au sein d’un univers vidéoludique.
La médiation numérique : renouvellement et diversification des pratiques
Authors: Menard Elaine 
Published: July 2017

Cet article présente les résultats de la deuxième phase d’un projet de recherche visant à développer une interface bilingue pour le repérage d’images numériques. Le principal objectif de cette phase de l’étude était d’examiner le rôle et l’utilité des fonctionnalités disponibles pour le processus de repérage d’images, du point de vue de chercher d’images. Un questionnaire bilingue (français et anglais) comportant des questions ouvertes et fermées a été élaboré et administré à deux groupes de participants : 20 répondants de langue française et 20 de langue française anglaise. Les données quantitatives recueillies ont été analysées selon des méthodes statistiques, tandis que le contenu des questions ouvertes a codé pour identifier les thèmes émergents. Cette étude montre que le processus de repérage d’images présente encore des difficultés et des frustrations pour le chercheur d’image. Les conclusions établissent que la recherche par mot-clé reste la principale méthode de repérage, comparativement au repérage par catégories prédéfinies ou par à l’aide d’une image ou d’un dessin. Finalement, les résultats de cette étude exploratoire mettent en relief plusieurs fonctionnalités comme une partie intégrante du processus de repérage d’images et révèlent l’importance d’être en mesure de repérer des images avec des mots extraits de plusieurs langues.