bluuebunny/crossref_metadata_2025_split huggingface dataset:
Discovery of 21 New Changing-look AGNs in the Northern Sky
Authors: Yang Qian , Wu Xue-Bing , Fan Xiaohui , Jiang Linhua , McGreer Ian , Shangguan Jinyi , Yao Su , Wang Bingquan , Joshi Ravi , Green Richard , Wang Feige , Feng Xiaotong , Fu Yuming , Yang Jinyi , Liu Yuanqi 
Published: July 2018

Abstract
The rare case of changing-look (CL) active galactic nuclei (AGNs), with the appearance or disappearance of broad Balmer emission lines within a few years, challenges our understanding of the AGN unified model. We present a sample of 21 new CL AGNs at

0.08
<
z
<
0.58

, which doubles the number of such objects known to date. These new CL AGNs were discovered in various ways, from (1) repeat spectra in the SDSS, (2) repeat spectra in the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) and SDSS, and (3) photometric variability and new spectroscopic observations. We use the photometric data from surveys, including the SDSS imaging survey, the Pan-STARRS1, the DESI Legacy imaging survey, the Wide-field Infrared Survey Explorer (WISE), the Catalina Real-time Transient Survey, and the Palomar Transient Factory. The estimated upper limits of the transition timescale of the CL AGNs in this sample spans from 0.9 to 13 years in the rest-frame. The continuum flux in the optical and mid-infrared becomes brighter when the CL AGNs turn on, or vice versa. Variations of more than 0.2 mag in the W1 band were detected in 15 CL AGNs during the transition. The optical and mid-infrared variability is not consistent with the scenario of variable obscuration in 10 CL AGNs at more than the 3σ confidence level. We confirm a bluer-when-brighter trend in the optical. However, the mid-infrared WISE colors W1–W2 become redder when the objects become brighter in the W1 band, possibly due to a stronger hot dust contribution in the W2 band when the AGN activity becomes stronger. The physical mechanism of type transition is important for understanding the evolution of AGNs.
X-Ray Variability from the Ultraluminous Black Hole Candidate X-Ray Binary in the Globular Cluster RZ 2109
Authors: Dage Kristen C. , Zepf Stephen E. , Bahramian Arash , Kundu Arunav , Maccarone Thomas J. , Peacock Mark B. 
Published: July 2018

Abstract
We present the results of long-term monitoring of the X-ray emission from the ultraluminous X-ray source XMMU J122939.9+075333 in the extragalactic globular cluster RZ2109. The combination of the high X-ray luminosity, short-term X-ray variability, X-ray spectrum, and optical emission suggests that this system is likely an accreting black hole in a globular cluster. To study the long-term behavior of the X-ray emission from this source, we analyze both new and archival Chandra and XMM-Newton observations, covering 16 years from 2000 to 2016. For all of these observations, we fit extracted spectra of RZ2109 with xspec models. The spectra are all dominated by a soft component, which is very soft with typical fit temperatures of T ≃ 0.15 keV. The resulting X-ray fluxes show strong variability on short and long timescales. We also find that the X-ray spectrum often shows no significant change even with luminosity changes as large as a factor of five.
Characterization of Stellar and Substellar Members in the Coma Berenices Star Cluster
Authors: Tang Shih-Yun , Chen W. P. , Chiang P. S. , Jose Jessy , Herczeg Gregory J. , Goldman Bertrand 
Published: July 2018

Abstract
We have identified stellar and substellar members in the nearby star cluster Coma Berenices, using photometry, proper motions, and distances of a combination of 2MASS, UKIDSS, URAT1, and Gaia/DR2 data. Those with Gaia/DR2 parallax measurements provide the most reliable sample to constrain the distance, averaging 86.7 pc with a dispersion of 7.1 pc, and age of ∼800 Myr, of the cluster. This age is older than the 400–600 Myr commonly adopted in the literature. Our analysis, complete within 5° of the cluster radius, leads to identification of 192 candidates, among which, after field contamination is considered, about 148 are true members. The members have J ∼ 3 mag to ∼17.5 mag, corresponding to stellar masses 2.3–0.06 M
☉. The mass function of the cluster peaks around 0.3 M
☉, and in the sense of

, where N is the number of members and m is stellar mass, with a slope α ≈ 0.49 ± 0.03 in the mass range 0.3–2.3 M
☉. This is much shallower than that of the field population in the solar neighborhood. The slope α = −1.69 ± 0.14 from 0.3 M
☉ to 0.06 M
☉, the lowest mass in our sample. The cluster is mass-segregated and has a shape elongated toward the Galactic plane. Our list contains nine substellar members, including three new discoveries of an M8, an L1, and an L4 brown dwarfs, extending from the previously known coolest members of late-M types to even cooler types.
The Core Mass Function across Galactic Environments. II. Infrared Dark Cloud Clumps
Authors: Liu Mengyao , Tan Jonathan C. , Cheng Yu , Kong Shuo 
Published: July 2018

Abstract
We study the core mass function (CMF) within 32 dense clumps in seven infrared dark clouds (IRDCs) with the Atacama Large Millimeter/submillimeter Array via 1.3 mm continuum emission at a resolution of ∼1″. We have identified 107 cores with the dendrogram algorithm, with a median radius of about 0.02 pc. Their masses range from 0.261 to 178 M
⊙. After applying completeness corrections, we fit the combined IRDC CMF with a power law of the form

and derive an index of α ≃ 0.86 ± 0.11 for M ≥ 0.79 M
⊙ and α ≃ 0.70 ± 0.13 for M ≥ 1.26 M
⊙, which is a significantly more top-heavy distribution than the Salpeter stellar initial mass function index of 1.35. We also make a direct comparison of these IRDC clump CMF results to those measured in the more evolved protocluster G286 derived with similar methods, which have α ≃ 1.29 ± 0.19 and 1.08 ± 0.27 in these mass ranges, respectively. These results provide a hint that, especially for the M ≥ 1.26 M
⊙ range where completeness corrections are modest, the CMF in high pressure, early-stage environments of IRDC clumps may be top-heavy compared to that in the more evolved, global environment of the G286 protoclusters. However, larger samples of cores probing these different environments are needed to better establish the robustness of this potential CMF variation.
Systematic Redshift of the Fe iii UV Lines in Quasars: Measuring Supermassive Black Hole Masses under the Gravitational Redshift Hypothesis
Authors: Mediavilla E. , Jiménez-Vicente J. , Fian C. , Muñoz J. A. , Falco E. , Motta V. , Guerras E. 
Published: July 2018

Abstract
We find that the Fe iii
λλ2039–2113 spectral feature in quasars appears systematically redshifted by amounts accountable under the hypothesis of gravitational redshift induced by the central supermassive black hole (BH). Our analysis of 27 composite spectra from the BOSS survey indicates that the redshift and the broadening of the lines in the Fe iii
λλ2039–2113 blend roughly follow the expected correlation in the weak limit of Schwarzschild geometry for virialized kinematics. Assuming that the Fe iii UV redshift provides a measure of

M

BH

R

Δ
λ

λ

≃

3

2

G

c

2

M

BH

R

and using different estimates of the emitting region size, R (either from gravitational microlensing, reverberation mapping, or from the scaling of size with intrinsic quasar luminosity), we obtain masses for ten objects that are in agreement within uncertainties with previous mass estimates based on the virial theorem. Reverberation mapping estimates of the size of the Fe iii
λλ2039–2113 emitting region in a sample of objects would be needed to confirm the gravitational origin of the measured redshifts. Meanwhile, we present a tentative BH mass scaling relationship based on the Fe iii
λλ2039–2113 redshift useful to measure the BH mass of one individual object from a single spectrum.
A Machine-learning Method for Identifying Multiwavelength Counterparts of Submillimeter Galaxies: Training and Testing Using AS2UDS and ALESS
Authors: An Fang Xia , Stach S. M. , Smail Ian , Swinbank A. M. , Almaini O. , Simpson C. , Hartley W. , Maltby D. T. , Ivison R. J. , Arumugam V. , Wardlow J. L. , Cooke E. A. , Gullberg B. , Thomson A. P. , Chen Chian-Chou , Simpson J. M. , Geach J. E. , Scott D. , Dunlop J. S. , Farrah D. , Werf P. van der , Blain A. W. , Conselice C. , Michałowski M. , Chapman S. C. , Coppin K. E. K. 
Published: July 2018

Abstract
We describe the application of supervised machine-learning algorithms to identify the likely multiwavelength counterparts to submillimeter sources detected in panoramic, single-dish submillimeter surveys. As a training set, we employ a sample of 695 (S
870μm ≳ 1 mJy) submillimeter galaxies (SMGs) with precise identifications from the ALMA follow-up of the SCUBA-2 Cosmology Legacy Survey’s UKIDSS-UDS field (AS2UDS). We show that radio emission, near-/mid-infrared colors, photometric redshift, and absolute H-band magnitude are effective predictors that can distinguish SMGs from submillimeter-faint field galaxies. Our combined radio + machine-learning method is able to successfully recover ∼85% of ALMA-identified SMGs that are detected in at least three bands from the ultraviolet to radio. We confirm the robustness of our method by dividing our training set into independent subsets and using these for training and testing, respectively, as well as applying our method to an independent sample of ∼100 ALMA-identified SMGs from the ALMA/LABOCA ECDF-South Survey (ALESS). To further test our methodology, we stack the 870 μm ALMA maps at the positions of those K-band galaxies that are classified as SMG counterparts by the machine learning but do not have a >4.3σ ALMA detection. The median peak flux density of these galaxies is S
870μm = (0.61 ± 0.03) mJy, demonstrating that our method can recover faint and/or diffuse SMGs even when they are below the detection threshold of our ALMA observations. In future, we will apply this method to samples drawn from panoramic single-dish submillimeter surveys that currently lack interferometric follow-up observations to address science questions that can only be tackled with large statistical samples of SMGs.
L’industrie des constructions navales : un secteur moteur stratégique pour le take-off économique de la Corée du Sud (1945-environs de 2000)
Authors: Barjot Dominique , Park Rang-Ri 
Published: July 2018

Après le décollage économique du Japon, la Corée du Sud a elle aussi connu un « miracle » économique. Plus encore qu’au Japon, les constructions navales ont constitué un secteur moteur, au caractère stratégique marqué, du décollage (ou take-off ) économique coréen. Avant l’électronique et grâce au soutien d’une puissante sidérurgie d’abord d’État, puis privatisée (1998-2000), les constructions navales jouèrent bien le rôle d’un secteur leader. Elles constituèrent l’une des clefs essentielles du take-off du pays, un instrument déterminant du rattrapage et un argument décisif pour un pays suiveur désireux de compenser son retard sur les pays leaders. Les constructions navales coréennes tirèrent avantage de leur étroite proximité avec les plus puissants complexes sidérurgiques du monde. Elles surgirent au premier rang mondial à partir de 2000, en supplantant alors le Japon. Depuis 2009, elles ont opposé une résistance effective et efficace à leurs concurrentes chinoises. Elles le doivent à une main-d’œuvre hautement qualifiée travaillant un grand nombre d’heures et à un excellent positionnement stratégique dans les produits haus de gamme. Ce succès, dans une large mesure, est le fruit d’une étroite coopération entre l’État et les chaebol commencée dans les années 1960.
Tata becoming multinational: a long-term process
Authors: Lanthier Pierre 
Published: July 2018

L’économie indienne a connu une croissance remarquable ces dernières décennies. La montée de la grande entreprise et ses avancées hors de l’Inde constituent certainement l’une des manifestations les plus explicites de ce dynamisme. Le groupe Tata est sans doute l’illustration la plus brillante de cette tendance. Lancé au xix e siècle, ce groupe n’est vraiment devenu multinational qu’à la fin du siècle suivant. En étudiant son évolution ainsi que ses relations avec l’État indien, le présent article entend démontrer que la multinationalisation de Tata ne résulte pas seulement des réformes de 1991 en Inde, mais aussi de stratégies de long terme qui ont permis au groupe d’avoir accès aux marchés internationaux.
Enhancing Graduate Nurse Transition: Report of the Evaluation of the Clinical Honors Program
Authors: Bull Rosalind , Shearer Toniele , Youl Loren , Campbell Steve 
Published: July 2018

Background:
The Bachelor of Nursing with Clinical Honors (Transition to Practice) program supports the transition of nursing graduates. It is the first initiative of its kind in Australia and is designed to integrate with existing graduate transition programs. The program is clinically focused, collaborative, and accessible online.

Method:
A 2015 evaluation comprised a program performance review, a questionnaire-based research component, and participating partner interviews. Quantitative and qualitative data were collected and analyzed.

Results:
The student and graduate surveys indicate that the program promotes evidence-based practice and learning, critical thinking, and reflection. Medication safety, its link to the national quality and safety agenda, and the promotion of safe medication administration were highlighted. The results of the industry partner interviews indicate that the program supports the missions and values of the participating organizations.

Conclusion:
The Clinical Honors program provides an evidence-based, theoretically structured program supporting transition to practice for new RNs. It supports the development of critical thinking, reflection, skill enhancement, and confidence.

J Contin Educ Nurs
. 2018;49(8):348–355.
CBLB Constrains Inactivated Vaccine–Induced CD8+ T Cell Responses and Immunity against Lethal Fungal Pneumonia
Authors: Nanjappa Som G. , Mudalagiriyappa Srinivasu , Fites J. Scott , Suresh M. , Klein Bruce S. 
Published: July 2018

Abstract
Fungal infections in CD4+ T cell immunocompromised patients have risen sharply in recent years. Although vaccines offer a rational avenue to prevent infections, there are no licensed fungal vaccines available. Inactivated vaccines are safer but less efficacious and require adjuvants that may undesirably bias toward poor protective immune responses. We hypothesized that reducing the TCR signaling threshold could potentiate antifungal CD8+ T cell responses and immunity to inactivated vaccine in the absence of CD4+ T cells. In this study, we show that CBLB, a negative regulator of TCR signaling, suppresses CD8+ T cells in response to inactivated fungal vaccination in a mouse model of CD4+ T cell lymphopenia. Conversely, Cblb deficiency enhanced both the type 1 (e.g., IFN-γ) and type 17 (IL-17A) CD8+ T cell responses to inactivated fungal vaccines and augmented vaccine immunity to lethal fungal pneumonia. Furthermore, we show that immunization with live or inactivated vaccine yeast did not cause detectable pathologic condition in Cblb−/− mice. Augmented CD8+ T cell responses in the absence of CBLB also did not lead to terminal differentiation or adversely affect the expression of transcription factors T-bet, Eomes, and RORγt. Additionally, our adoptive transfer experiments showed that CBLB impedes the effector CD8+ T cell responses in a cell-intrinsic manner. Finally, we showed that ablation of Cblb overcomes the requirement of HIF-1α for expansion of CD8+ T cells upon vaccination. Thus, adjuvants that target CBLB may augment inactivated vaccines and immunity against systemic fungal infections in vulnerable patients.
The Universal Business Language ecosystem and the OASIS TC process
Authors: Holman G. Ken 
Published: July 2018

A rich worldwide ecosystem has grown around the freely-available Universal Business Language (UBL) standard for 81 business documents such as purchase orders, invoices, waybills, etc., and 4600 semantic business objects expressed in those business documents The UBL development committee was formed in 2001 as a technical committee in OASIS (the Organization for the Advancement of Structured Information Standards) under a strict set of transparency rules supported by a rich set of collaborative tools with which the committee members have created both normative and non-normative work products. For UBL, normative XML schemas and non-normative JSON schemas are examples of both of these kinds of work products, specified for user communities to leverage in their communication environments for electronic business solutions.
Solutions built on a foundation of open standards are attractive to large ecosystems of developers and end users working towards shared objectives. To be truly open, the development and deployment of such a specification must address three critically important issues: governance, transparency and availability. UBL was developed under the governance of the OASIS Technical Committee Process, working with a tool set that is available to any community wanting to create a markup vocabulary. OASIS, a membership organization, fosters the successful development of work products by its members participating in its technical committees.
And so it is important to look into the detail of these two perspectives of UBL: how UBL is best deployed within the ecosystem due to its magnitude, and how UBL is governed and maintained during the development process.
Illustrated by UBL, when considering where to bring together participants developing new open vocabulary ecosystems, OASIS with its TC process should be a front-runner in your consideration of a positive and productive environment for building team results.
Seagrass community-level controls over organic carbon storage are constrained by geophysical attributes within meadows of Zanzibar, Tanzania
Authors: Belshe Elizabeth Fay , Hoeijmakers Dieuwke , Herran Natalia , Mtolera Matern , Teichberg Mirta 
Published: July 2018

Abstract. The aim of this work was to explore the feasibility of using plant functional
traits to identify differences in sediment organic carbon (OC) storage within
seagrass meadows. At 19 sites within three seagrass meadows in the coastal
waters of Zanzibar, Tanzania, species cover was estimated along with three
community traits hypothesized to influence sediment OC storage (above and
belowground biomass, seagrass tissue nitrogen content, and shoot density).
Sediments within four biogeographic zones (fore reef, reef flat, tidal
channel, and seagrass meadow) of the landscape were characterized, and
sediment cores were collected within seagrass meadows to quantify OC storage
in the top 25 cm and top meter of the sediment. We identified five distinct
seagrass communities that had notable differences in the plant traits, which
were all residing within a thin veneer (ranging from 19 to 78 cm thick) of
poorly sorted, medium to coarsely grained carbonate sands on top of carbonate
rock. One community (B), dominated by Thalassodendron ciliatum,
contained high amounts of above (972±74 g DW m−2) and
belowground (682±392 g DW m−2) biomass composed of low-elemental-quality tissues (leaf C : N = 24.5; rhizome C : N = 97). While
another community (C), dominated by small-bodied ephemeral seagrass species,
had significantly higher shoot density (4178 shoots m−2). However,
these traits did not translate into differences in sediment OC storage and
across all communities the percentage of OC within sediments was similar and
low (ranging from 0.15 % to 0.75 %), as was the estimated OC storage
in the top 25 cm (14.1±2.2 Mg C ha−1) and top meter (33.9±7.7 Mg C ha−1) of sediment. These stock estimates are considerably
lower than the global average (194.2±20.2 Mg C ha−1) reported for
other seagrass ecosystems and are on the lower end of the range of estimates
reported for the tropical Indo-Pacific bioregion (1.9 to
293 Mg C ha−1). The uniformly low OC storage across communities,
despite large inputs of low-quality belowground tissues in community B,
indicates that the geophysical conditions of the coarse, shallow sediments at
our sites were not conducive to OC stabilization and outweighed any
variation in the quantity or quality of seagrass litter inputs. These results
add to a growing body of evidence showing that geophysical conditions of the
sediment modulate the importance of plant traits in regards to retention of
OC within blue carbon ecosystems and cautions against the use of plant
traits as a proxy for sediment OC storage across all seagrass ecosystems.
Prevalence of Wolbachia in 10 Tenebrionidae stored product insects and infection density dynamics in confused flour beetle Tribolium confusum (Jaquelin Du Val) (Coleoptera: Tenebriondae)
Authors: Lu Yujie , Miao Shiyuan , Wang Zhengyan , Wang Sibao , Zhang Chenguang 
Published: July 2018

Background: Increasingly interests in the potential use of insect symbionts Wolbachia to control populations of pest species were focused on many vector pest species and agricultural insects. However, few pieces of researches were reported in stored product insects.
Methods: We surveyed the prevalence of Wolbachia using a PCR detection method in 10 Tenebrionidae stored product insects. Subsequently, Wolbachia infection density and spatiotemporal dynamics in Tribolium confusum were investigated in detail by TaqMan probe real-time quantitative PCR, and Wolbachia elimination patterns by antibiotic treatment and host reproductive fitness parameters were compared.
Results: Our results identified that T. confusum were the only infected species in the survey. Wolbachia infection density consistently increased with the development of T.confusum and plateaued at 3.7×107 wsp copies per individual insect at the young adult stage. Wolbachia densities in females showed significant differences to the male at the pupae stage and varied in different tissues and organs.Aposymbiotic female beetles by feeding with Tetracycline diet were completely incapable to produce mature progenies when crossing with Wolbachia infected males. Embryogenesis and egg hatch rate were specifically inhibited after Wolbachia elimination, while other traits including egg produced numbers, pupation rate and sex ratio remained unaffected after antibiotic treatment.
Discussion: All the results indicated that Wolbachia infection was regarded as a mutualism but not obligate symbiont and benefited the host confused flour beetle.