bluuebunny/crossref_metadata_2025_split huggingface dataset:
Over-stressed, Overwhelmed, and Over Here: Resident Directors and the Challenges of Student Mental Health Abroad
Authors: Lucas John 
Published: May 2020

This article presents a study that stemmed from the author's personal struggle to help several students abroad suffering from mental illness (endogenous depression, anxiety disorder, borderline personality, paranoia, anorexia). At the time, little research had been written on the role of the resident director in relation to the mental health challenges students may experience while on overseas programs. Therefore, this article attempts to state the nature of these issues, examine current research, and present actual cases of study abroad students with whom the author worked on a variety of mental health concerns (their names and some details have been changed to protect their privacy). The hope of this article is to begin a line of inquiry that will help other professionals in the field come to terms with one of the growing challenges resident directors face working with U.S. undergraduates overseas.
The Rewards of Qualitative Assessment Appropriate to Study Abroad
Authors: Engle Lilli 
Published: May 2020

The reluctance to challenge students with difference, at the risk of making them unhappy, has generated a culture of incompatible goals and mixed messages – an ideological tug of war that leads, all too often, to a significant mobilization of time, energy, money, and talent for mitigated learning outcomes that are rarely measured, documented, or otherwise addressed. For the purpose of this article over 50 end-of-program evaluation forms from universities known for their investment in international education were examined. The forms were provided either by study abroad offices or freely accessed via the internet. The questions put to students in these qualitative assessment questionnaires paint a picture of a profession all too ethnocentric in its approach to international education. This article presents a study that outlines the process of placing a more appropriate set of values at the heart of qualitative assessment questionnaires.
Towards Reconciliation in the Motherland: Race, Class, Nationality, Gender, and the Complexities of American Student Presence at the University of Ghana, Legon
Authors: Landau Jennifer , Moore David Chioni 
Published: May 2020

The following paper, co-written by an American alumna of a U.S.- based study abroad program at the University of Ghana, Legon, and a U.S.-based American professor specializing in International and Black Atlantic Studies, will explore one particularly freighted instance of the end of such assumptions, by addressing the American student presence at the University of Ghana, Legon. Examination of the Legon case will, we hope, be valuable for all study abroad professionals, because the American student presence at Legon challenges all of the traditional assumptions noted just above.
International Study and Experiential Learning: The Academic Context
Authors: Montrose Lynne 
Published: May 2020

Experiential learning is a pedagogy that actively engages the student in the phenomena that they are studying, such as in cooperative education, internships, clinical experience, service learning, outdoor leadership, organizational development, and activity-based learning. When students develop their own research agenda, engage in critical thinking and test their interpersonal skills, they come face to face with an alternative worldview, learning through both action and reflection, including the consequences of the larger social and ethical implications of this knowledge.
This article will explore experiential learning as a framework for enhancing the educational value of an international experience. After a brief review of theorists of experiential learning, the accepted principles of good practice in the field will be discussed, followed by discussions of the design of learning objectives and learning contracts, and the importance of this type of learning as it relates to international programs.
Study Abroad Levels: Toward a Classification of Program Types
Authors: Engle Lilli , Engle John 
Published: May 2020

As we begin to gather assessment data about study abroad outcomes, how can we analyze it intelligently when we have no precise language to differentiate or categorize the types of study abroad experiences associated with that data? How can we contribute to the clear articulation of educational goals in study abroad, goals that can serve as a counterweight to more and more prevalent “student client” expectations? How—drawing students out of their “comfort zones” instead of creating such zones abroad—can we bring renewed value and prestige to the rewarding difficulty and essential challenge inherent in the process of adaptation to cultural difference?
As the statistics of Open Doors each year reveal, overall numbers of U.S. overseas study participants have increased steadily and, at times, impressively during the last two decades. And, with study abroad becoming each year a more attractive “recruiting tool” in the “market” for prospective students, such increases in numbers will likely continue. Unfortunately, the road toward rising student participation is insufficiently mapped and signposted as it traverses an international education landscape made ever more complex by choices in program focus, destination, duration, participant preparation and ideal outcome. To articulate and refine our understanding of the differences that characterize this terrain, we will need guides of greater precision.
Clearly, it is time to draw distinctions of a qualitative sort—time for international education professionals to consider seriously the elaboration and adoption of one such guide, a hierarchical classification of program types.
HUBUNGAN KESIAPAN BELAJAR SISWA DENGAN HASIL BELAJAR SISWA KELAS VIII DI SMP NEGERI 1 WRINGINANOM
Authors: Devisafitri Assisca , Pramonoadi  
Published: May 2020

Pada era pendidikan saat ini sebagian besar sekolah telah menerapkan kurikulum K-13. Pada kurikulum ini siswa diharapkan lebih aktif dalam kegiatan proses belajar mengajar. Keberhasilan kegiatan tersebut dapat terlihat dan diukur melalui evaluasi sebagai hasil belajar yang dicapai selama mengikuti proses belajar mengajar. Namun, pada hasil belajar siswa ada fakor-faktor yang mempengaruhi hasil yang diperoleh siswa. Faktor-faktor tersebut ada dua macam yaitu faktor internal dan faktor eksternal. Didalam faktor internal terdapat salah satu faktor yaitu faktor kesiapan. Rumusan masalah pada penelitian ini adalah “Apakah ada hubungan kesiapan belajar siswa dengan hasil belajar siswa SMP Negeri 1 Wringinanom”. Tujuan penelitian untuk mengetahui adanya hubungan kesiapan belajar siswa dengan hasil belajar siswa. Jenis penelitian yang digunakan pada peneitian ini adalah jenis penelitian kuantitatif. Dengan teknik pengambilan sampel menggunakan teknik purposive sampling di SMP Negeri 1 Wringinanom sehingga diperoleh dua kelas yaitu keas VIII-H dan VIII-I. Teknik pengumpulan data menggunakan metode angket dan tes. Dan teknik analisis data yang digunakan yaituuji korelasi product-moment. Hasil yang diperoleh dari analisis data,uji korelasi product-momentmenunjukkan hasil korelasi (〖r_xy/r〗_hitung) sebesar 0,625227, pada penelitian ini taraf signifikan yang digunakan adalah0,05 sehingga diperolehr_tabel=0,2480<r_hitung=0,625227 maka dalam penelitian ini dapat disimpulkan bahwa ada hubungan kesiapan belajar siswa dengan hasil belajar siswa SMP Negeri 1 Wringinanom.
Repurchase Intention Pada Korean Skincare Product Di Surabaya
Authors: Kempa Sesilya , Gotami Erika 
Published: May 2020

This study aims to determine whether or not the influence of country of originimage and perceived value on repurchase intention with word of mouth as anintervening variable on Korean skincare products in Surabaya. The type ofresearch used is quantitative research. The population in this study were peoplein Surabaya who had used and purchased korean skincare products of the same type at least 3 (three) times and the samples used in this study were 100 people.This study uses Partial Least Square (PLS). The results showed that the country oforigin image had an effect on word of mouth and repurchase intention, perceivedvalue had an effect on word of mouth and repurchase intention, and word ofmouth had an effect on repurchase intention. Word of mouth is proven to mediatethe effect of country of origin image and perceived value on repurchase intention.
Faktor-Faktor Yang Mempengaruhi Price Earning Ratio Perusahaan LQ45 Di Bursa Efek Indonesia
Authors: Yuniarsih Nia 
Published: May 2020

The purpose of this study was to determine the factors affecting price earningratio in LQ45 companies listed on the Indonesia Stock Exchange. This type ofresearch is a quantitative study with a sample of 40 companies starting in 2017-2018.The results of the study showed tha tthe variable Return on Assets, Return on Equity (ROE), Debt to Equity Ratio and Price Book Value together affect The Price Earning Ratio (PER). The t test shows theresults that Return on Assets has an influence on Price Earning Ratio, while Return on Equity,Debt to Equity Ratio and Price Book value do not affect the Price Earning Ratio.
Orbital Stability of Exomoons and Submoons with Applications to Kepler 1625b-I
Authors: Rosario-Franco Marialis , Quarles Billy , Musielak Zdzislaw E. , Cuntz Manfred 
Published: May 2020

Abstract
An intriguing question in the context of dynamics arises: could a moon possess a moon itself? Such a configuration does not exist in the solar system, although this may be possible in theory. Kollmeier & Raymond determined the critical size of a satellite necessary to host a long-lived subsatellite, or submoon. However, the orbital constraints for these submoons to exist are still undetermined. Domingos et al. indicated that moons are stable out to a fraction of the host planet's Hill radius R
H,p, which in turn depend on the eccentricity of its host’s orbit. Motivated by this, we simulate systems of exomoons and submoons for 105 planetary orbits, while considering many initial orbital phases to obtain the critical semimajor axis in terms of R
H,p or the host satellite’s Hill radius R
H,sat, respectively. We find that, assuming circular coplanar orbits, the stability limit for an exomoon is 0.40 R
H,p and for a submoon is 0.33 R
H,sat. Additionally, we discuss the observational feasibility of detecting these subsatellites through photometric, radial velocity, or direct imaging observations using the Neptune-sized exomoon candidate Kepler 1625b-I and identify how stability can shape the identification of future candidates.
A Wide-orbit Exoplanet OGLE-2012-BLG-0838Lb
Authors: Poleski R. , Suzuki Daisuke , Udalski A. , Xie Xiaojia , Yee J. C. , Koshimoto Naoki , Gaudi B. S. , Gould A. ,   (leading authors), Skowron J. , Szymański M. K. , Soszyński I. , Pietrukowicz P. , Kozłowski S. , Wyrzykowski Ł. , Ulaczyk K. ,   (OGLE collaboration), Abe Fumio , Barry Richard K. , Bennett David. P. , Bhattacharya Aparna , Bond Ian A. , Donachie Martin , Fujii Hirosane , Fukui Akihiko , Itow Yoshitaka , Hirao Yuki , Kamei Yuhei , Kondo Iona , Alex Li Man Cheung , Matsubara Yutaka , Miyazaki Shota , Muraki Yasushi , Nagakane Masayuki , Ranc Clément , Rattenbury Nicholas J. , Satoh Yuki K. , Shoji Hikaru , Suematsu Haruno , Sullivan Denis J. , Sumi Takahiro , Tristram Paul J. , Yamakawa Takeharu , Yamawaki Tsubasa , Yonehara Atsunori ,   (MOA collaboration), Han C. , Dong Subo , Morzinski K. M. , Males J. R. , Close L. M. , Pogge R. W. , Beaulieu J.-P. , Marquette J.-B. 
Published: May 2020

Abstract
We present the discovery of a planet on a very wide orbit in the microlensing event OGLE-2012-BLG-0838. The signal of the planet is well separated from the main peak of the event and the planet–star projected separation is found to be twice the Einstein ring radius, which corresponds to a projected separation of ≈4 au. Similar planets around low-mass stars are very hard to find using any technique other than microlensing. We discuss microlensing model fitting in detail and discuss the prospects for measuring the mass and distance of the lens system directly.
A Trend in the Effective Spin Distribution of LIGO Binary Black Holes with Mass
Authors: Safarzadeh Mohammadtaher , Farr Will M. , Ramirez-Ruiz Enrico 
Published: May 2020

Abstract
Binary black holes (BBHs) detected by gravitational wave (GW) observations could be broadly divided into two formation channels: those formed through field binary evolution and those assembled dynamically in dense stellar systems. Each of these formation channels, and their subchannels, populate a distinct region in the effective spin–mass (

) plane. Depending on the branching ratio of different channels, an ensemble of BBHs could show a trend in this plane. Here we fit a mass-dependent distribution for

to the GWTC-1 BBHs from the first and second observing runs of Advanced LIGO and Advanced Virgo. We find a negative correlation between mass and the mean effective spin (

), and positive correlation with its dispersion (

) at 75% and 80% confidence. This trend is robust against the choice of mass variable, but most pronounced when the mass variable is taken to be the chirp mass of the binary. The result is consistent with significant contributions from both dynamically assembled and field binaries in the GWTC-1 catalog. The upcoming LIGO O3a data release will critically test this interpretation.
The Gravitational Wave Treasure Map: A Tool to Coordinate, Visualize, and Assess the Electromagnetic Follow-up of Gravitational-wave Events
Authors: Wyatt Samuel D. , Tohuvavohu Aaron , Arcavi Iair , Lundquist Michael J. , Howell D. Andrew , Sand David J. 
Published: May 2020

Abstract
We present the Gravitational Wave (GW) Treasure Map, a tool to coordinate, visualize, and assess the electromagnetic (EM) followup of GW events. With typical GW localization regions of hundreds to thousands of square degrees and dozens of active follow-up groups, the pursuit of EM counterparts is a challenging endeavor, but the scientific payoff for early discovery of any counterpart is clear. With this tool, we provide a website and an application programming interface (API) that allows users to easily see where other groups have searched and better inform their own follow-up search efforts. A strong community of Treasure Map users will increase the overall efficiency of EM counterpart searches and will play a fundamental role in the future of multimessenger astronomy.
Gemini Multi-Object Spectrograph Integral Field Unit Spectroscopy of the Double-peaked Broad Emission Line of a Red Active Galactic Nucleus
Authors: Kim Dohyeong , Im Myungshin , Kim Minjin , Ho Luis C. 
Published: May 2020

Abstract
Galaxy mergers are expected to produce multiple supermassive black holes (SMBHs) in close-separation, but the detection of such SMBHs has been difficult. 2MASS J165939.7 + 183436 is a red active galactic nucleus (AGN) that is a prospective merging SMBH candidate owing to its merging features in Hubble Space Telescope imaging and double-peaked broad emission lines (BELs). Herein, we report a Gemini Multi-Object Spectrograph Integral Field Unit observation of a double-peaked broad Hα line of 2MASS J165939.7+183436. Furthermore, we confirm the existence of two BEL peaks that are kinematically separated by 3000 km s−1, with the SMBH of each BEL component weighing at

and

, if they arise from independent BELs near the two SMBHs. The BEL components were not separated at >0.″1; however, under several plausible assumptions regarding the fitting of each spaxel, the two components are found to be spatially separated at 0.″085 (∼250 pc). Different assumptions for the fitting can lead to a null (<0.″05) or a larger spatial separation (∼0.″15). Given the uncertainty regarding the spatial separation, various models, such as the disk emitter and multiple SMBH models, are viable solutions to explain the double BEL components. These results will promote future research for finding more multiple SMBH systems in red AGNs, and higher-resolution imaging validates these different models.
Magnetoacoustic Waves in a Magnetic Slab Embedded in an Asymmetric Magnetic Environment. II. Thin and Wide Slabs, Hot and Cold Plasmas
Authors: Zsámberger Noémi Kinga , Erdélyi Róbert 
Published: May 2020

Abstract
Wave propagation in magnetically structured atmospheres is a thoroughly studied, yet practically inexhaustible, well of investigations in the field of solar magneto-seismology. A simple but powerful example is the examination of wave behavior in a magnetic slab. Our previous study used an analytical approach to derive the general dispersion relation for magnetoacoustic waves in a magnetic slab of homogeneous plasma, which was enclosed in an asymmetric magnetic environment. In the present study, we focus on the analysis of wave propagation in various limiting cases applicable to solar and space plasma physics or astrophysics. The thin- and wide-slab approximations, as well as the limits of low and high plasma β values, are considered. Utilizing the fact that in a weakly asymmetric slab the dispersion relation can be decoupled, the behavior of quasi-sausage and quasi-kink modes is studied in further analytical and numerical detail, and their avoided crossings are described. The results highlight how asymmetry influences the wave properties, e.g., the phase speed of eigenmodes, depending on the ratios of external to internal densities and magnetic fields on the two sides. Notably, the phase speeds of surface modes will converge to different values for the quasi-sausage and quasi-kink modes in the wide-slab limit, and cutoff frequencies are introduced with respect to both surface and body modes, in thin as well as wide slabs, beyond which the solutions become leaky. These obtained properties of MHD wave behavior could be measured with suitable high-resolution instruments in the future.
Outside the Wall: Hydrodynamics of Type I Supernovae Interacting with a Partially Swept-up Circumstellar Medium
Authors: Harris C. E. , Nugent P. E. 
Published: May 2020

Abstract
Explaining the observed diversity of supernovae (SNe) and the physics of explosion requires knowledge of their progenitor stars, which can be obtained by constraining the circumstellar medium (CSM). Models of the SN ejecta colliding with the CSM are necessary to infer the structure of the CSM and tie it back to a progenitor model. Recent SNe I revealed CSM concentrated at a distance r ∼ 1016 cm, for which models of SN interaction are extremely limited. In this paper, we assume the concentrated region is a “wall” representing swept-up material, and unswept material lies outside the wall. We simulate one-dimensional hydrodynamics of SNe Ia and Ib impacting 300 unique CSM configurations using RT1D, which captures the Rayleigh–Taylor instability. We find that the density ratio between the wall and ejecta—denoted A
0 or “wall height”—is key, and higher walls deviate more from self-similar evolution. Functional fits accounting for A
0 are presented for the forward-shock radius evolution. We show that higher walls have more degeneracy between CSM properties in the deceleration parameter, slower shocks, deeper-probing reverse shocks, slower shocked ejecta, less ejecta mass than CSM in the shock, and more mixing of ejecta into the CSM at early times. We analyze observations of SN 2014C (Type Ib) and suggest that it had a moderately high wall (10 ≲ A
0 ≲ 200) and wind-like outer CSM. We also postulate an alternate interpretation for the radio data of SN 2014C, that the radio rise occurs in the wind rather than the wall. Finally, we find that hydrodynamic measurements at very late times cannot distinguish the presence of a wall, except perhaps as an anomalously wide shock region.
A Survey of Interplanetary Small Flux Ropes at Mercury
Authors: Murphy Amy K. , Winslow Reka M. , Schwadron Nathan A. , Lugaz Noé , Yu Wenyuan , Farrugia Charles J. , Niehof Jonathan T. 
Published: May 2020

Abstract
Interplanetary magnetic flux ropes with durations from a few minutes to a few hours have been termed small flux ropes (SFRs). We have built a comprehensive catalog of SFRs at Mercury using magnetometer data from the orbital phase of the MESSENGER mission (2011–2015). In the absence of solar wind plasma measurements, we developed strict identification criteria for SFRs in the magnetometer observations, including force-free field fits for each flux rope. We identified a total of 48 events that met our strict criteria, with events ranging in duration from 2.5 minutes to 4 hr. Using superposed epoch analysis, we obtained the generic SFR magnetic field profile at Mercury. Due to its eccentric orbit, Mercury’s heliospheric distance varies between 0.31 and 0.47 au, a range of ∼0.16 au. This distance is potentially large enough for the SFRs to undergo measurable changes due to distance. Thus, we split the data into two distance bins to look for such changes. We found that the average SFR profile is more symmetric farther from the Sun, in line with the idea that SFRs form closer to the Sun and undergo a relaxation process in the solar wind. Based on this result, as well as the SFR durations and the magnetic field strength fall-off with heliocentric distance, we infer that the SFRs observed at Mercury are expanding as they propagate with the solar wind. We also determined that the SFR occurrence frequency is nearly four times as high at Mercury as for similarly detected events at 1 au. Most interestingly, we found two SFR populations in our data set, one likely generated in a quasi-periodic formation process near the heliospheric current sheet, and the other formed away from the current sheet in isolated events.
The Dragonfly Wide Field Survey. I. Telescope, Survey Design, and Data Characterization
Authors: Danieli Shany , Lokhorst Deborah , Zhang Jielai , Merritt Allison , van Dokkum Pieter , Abraham Roberto , Conroy Charlie , Gilhuly Colleen , Greco Johnny , Janssens Steven , Li Jiaxuan , Liu Qing , Miller Tim B. , Mowla Lamiya 
Published: May 2020

Abstract
We present a description of the Dragonfly Wide Field Survey (DWFS), a deep photometric survey of a wide area of sky. The DWFS covers 330 deg2 in the equatorial GAMA fields and the Stripe 82 fields in the SDSS g and r bands. It is carried out with the 48-lens Dragonfly Telephoto Array, a telescope that is optimized for the detection of low surface brightness emission. The main goal of the survey is to study the dwarf galaxy population beyond the Local Group. In this paper, we describe the survey design and show early results. We reach 1σ depths of μ

g
≈ 31 mag arcsec−2 on arcminute scales and show that Milky Way satellites such as Sextans, Bootes, and Ursa Major should be detectable out to D ≳ 10 Mpc. We also provide an overview of the elements and operation of the 48-lens Dragonfly telescope and a detailed description of its data reduction pipeline. The pipeline is fully automated, with individual frames subjected to a rigorous series of quality tests. The sky subtraction is performed in two stages, ensuring that emission features with spatial scales up to ∼0.°9 × 0.°6 are preserved. The DWFS provides unparalleled sensitivity to low surface brightness features on arcminute scales.