bluuebunny/crossref_metadata_2025_split huggingface dataset:
La literatura policial de Sergio Ramírez
Authors: Pezzè Andrea 
Published: April 2021

En este artículo reflexionamos sobre las modalidades escriturales del policial en la obra del nicaragüense Sergio Ramírez. En particular, nos proponemos cotejar dos tipologías del género, presentes en la obra de Ramírez y muy prolíficas en el panorama literario contemporáneo: la no-ficción y el neopolicial. La primera novela policial del nicaragüense, Castigo divino (1988), y algunos de sus últimos cuentos, son de la primera tipología, mientras que en 2008 publica una obra de la segunda. Apoyándonos en las teorizaciones sobre el género policial, y tras averiguar las diferencias fundamentales entre ellas, nuestro propósito es inferir cuales dinámicas del conocimiento enseñan las dos tipologías narrativas.
Variaciones en torno al imaginario gótico en "El desbarrancadero" de Fernando Vallejo
Authors: Traballi Sofía Irene 
Published: April 2021

Este trabajo propone un acercamiento a la novela El desbarrancadero, de Fernando Vallejo (2001), a fin de plantear como hipótesis la presencia en el texto de numerosos tópicos, espacios, figuras y concepciones que remiten al imaginario de las ficciones góticas. No obstante, si la narración habilita un abordaje en esta clave, es preciso decir que no se trata de una simple adopción de elementos sino de una doble operación que puede caracterizarse como parodia y trivialización del imaginario gótico. La parodia se produce sobre los espacios y las figuras, y también sobre las representaciones de la religión católica. La trivialización, por su parte, se manifiesta en el plano de las concepciones que conforman la cosmovisión del narrador y en la peculiar construcción de la temporalidad, modelada por la memoria y los retornos de la muerte. Sobre esta doble estrategia textual de parodia y trivialización el narrador construye una invectiva burlesca que remarca el carácter terrible y a la vez risible (en definitiva, grotesco) de su propia familia, de la sociedad colombiana y, en un sentido más amplio, de la existencia humana.
Heterotopías fictopublicitarias: “La IslaTM”, de Javier Fernández, y el género literario de los folletos publicitarios ficcionales
Authors: Martín Rodríguez Mariano 
Published: April 2021

Las ficciones con fines publicitarios tienen una larga tradición. A estas ficciones publicitarias corresponde una modalidad textual inversa: los textos fictopublicitarios, que imitan los discursos de la publicidad escrita con fines literarios. Este género presenta ejemplos tales como anuncios de entidades u objetos imaginarios de autores como Coelho Neto, Rigaut o Arreola. Entre ellos destaca “La IslaTM”, sección de la obra cyberpunk Cero absoluto (2005), de Javier Fernández. Este seudofolleto turístico revela mediante la ficción la dimensión (anti)utópica del tipo de publicidad que vende espacios heterotópicos. El texto destaca por su coherencia y autonomía, al crearse mediante los signos y el discurso publicitarios un mundo ficcional completo, lo que ilustra el intercambio semiótico entre la publicidad y la ficción literaria.
Experience in long-term care organizing in Israel geriatric institutions during the COVID-19 pandemic
Authors: Konson C. , Zaretskaya K. 
Published: April 2021

The main measures to prevent the spread of the COVID-19 virus in long-term institutions for elderly people should be based on the principle of social distancing and on limiting direct physical contact between older residents and their families. In this regard, the system of nursing care for the elderly residents of long-term care institutions is forced to reorganize in order to provide residents and their families with adequate quality care, while ensuring infection safety.
Clinical trials in geriatrics: actual status and international regulatory guidlines
Authors: Malaya I. P. 
Published: April 2021

The number of old and very old people is increasing every year. Geriatric population is considered as the most growing age group. By different estimations about 60% of medicines are prescribed to patients of 65 and older. In the same time this age group is underrepresented in clinical trials. Participation of elderlies in clinical trials is really actual now and requires further development form regulatory authorities, drug manufactures and investigators. This review summarizes actual international guidelines on clinical trials in geriatric population.
PENDAMPINGAN DALAM PENGEMBANGAN PEMBINAAN KARAKTER PESERTA DIDIK DI SMPK BINTANG MULIA MEKAR WANGI BANDUNG SEBAGAI SALAH SATU UPAYA PENEGUHAN PANGGILAN HIDUP KRISTEN
Authors: Simanjuntak Junihot M. , Paulus Yanto , Deak Victor , Santosa Rivosa , Pesik Anne Yance , Raminton Dede , Waruwu Lismawati , Sihite Riris Ariesta Monalisa , Lafau Tomas Alianus 
Published: April 2021

Tujuan dari pengabdian ini adalah: 1) membantu guru bidang studi pendidikan agama Kristen untuk melakukan tugasnya dalam ruang lingkup sekolah dalam melaksanakan tugas membina peserta didik dalam mengembangkan karakter yang terdapat dalam diri peserta didik, menjadi karakter yang sesuai dengan identitas sebagai remaja Kristen. 2) Mengubah moral peserta didik agar berkualitas, dengan memperbaiki dan mengembangkan karakternya, sehingga ia mengalami pembaharuan dan mampu menjadi generasi bangsa pembaharu untuk orang lain dan lingkungan sekitarnya. Bentuk kegiatan ini adalah pendampingan kegiatan pembinaan karakter peserta didik SMPK Bintang Mulia Mekar Wangi Bandung. Peserta dalam kegiatan ini terdiri dari: 1) Guru-guru SMPK Bintang Mulia Mekar Wangi Bandung yang berjumlah 15 orang, 2) Perserta didik Kelas 8 dan 9 yang berjumlah 52 orang, 3) Orangtua (wali) peserta didik berjumlah 52 orang. Kegiatan ini dilakukan dengan metode konseling terjadwal-non formal, demonstrasi, dan latihan. Hasil Kegiatan pendampingan adalah: 1) terjadinya peningkatan kemampuan guru-guru SMPK Bintang Mulia Mekar Wangi Bandung dalam penyusunan perangkat pembelajaran pendidikan karakter kristiani setelah diberikan pelatihan dan pendampingan; dan 2) terjadinya peningkatan keterampilan guru- guru SMPK Bintang Mulia Mekar Wangi Bandung dalam mengimplementasikan pendidikan karakter bangsa setelah diberikan pendampingan.
No Dependence of Radio Properties of Brightest Group Galaxies on the Luminosity Gap
Authors: Miraghaei H. , Best P. N. , Cochrane R. K. , Sabater J. 
Published: April 2021

Abstract
We study the radio and optical properties of the brightest group galaxies (BGGs) in a sample of galaxy groups from the Sloan Digital Sky Survey (SDSS) DR7. The luminosity difference between the BGG and the second-ranked galaxy in the group (known as the luminosity, or magnitude, gap) has been used as a probe for the level of galaxy interaction for the BGG within the group. We study the properties of BGGs with magnitude gaps in the range of 0–2.7 mag, in order to investigate any relation between the luminosity gap and the radio properties of the BGG. In order to eliminate selection biases, we ensure that all variations in stellar mass are accounted for. We then confirm that, at fixed stellar mass, there are no significant variations in the optical properties of the BGGs over the full range of luminosity gaps studied. We compare these optical results with the Evolution and Assembly of GaLaxies and their Environments (EAGLE) hydrodynamical simulations and find broad consistency with the observational data. Using EAGLE we also confirm that no trends begin to arise in the simulated data at luminosity gaps beyond our observational limits. Finally, we find that, at a fixed stellar mass, the fraction of BGGs that are radio-loud also shows no trend as a function of luminosity gap. We examine how the BGG offset from the center of the group may affect the radio results and find no significant trend for the fraction of radio-loud BGGs with a magnitude gap in either the BGG samples with greater or less than 100 kpc offset from the center of the group.
Search for Magnetic Accretion in SW Sextantis Systems
Authors: Lima I. J. , Rodrigues C. V. , Lopes C. E. Ferreira , Szkody P. , Jablonski F. J. , Oliveira A. S. , Silva K. M. G. , Belloni D. , Palhares M. S. , Shugarov S. , Baptista R. , Almeida L. A. 
Published: April 2021

Abstract
SW Sextantis systems are nova-like cataclysmic variables that have unusual spectroscopic properties, which are thought to be caused by an accretion geometry having part of the mass flux trajectory out of the orbital plane. Accretion onto a magnetic white dwarf is one of the proposed scenarios for these systems. To verify this possibility, we analyzed photometric and polarimetric time-series data for a sample of six SW Sex stars. We report possible modulated circular polarization in BO Cet, SW Sex, and UU Aqr with periods of 11.1, 41.2, and 25.7 minutes, respectively, and less significant periodicities for V380 Oph at 22 minutes and V442 Oph at 19.4 minutes. We confirm previous results that LS Peg shows variable circular polarization. However, we determine a period of 18.8 minutes, which is different from the earlier reported value. We interpret these periods as the spin periods of the white dwarfs. Our polarimetric results indicate that 15% of the SW Sex systems have direct evidence of magnetic accretion. We also discuss SW Sex objects within the perspective of being magnetic systems, considering the latest findings about the demography, formation, and evolution of cataclysmic variables.
Weather on Other Worlds. V. The Three Most Rapidly Rotating Ultra-cool Dwarfs
Authors: Tannock Megan E. , Metchev Stanimir , Heinze Aren , Miles-Páez Paulo A. , Gagné Jonathan , Burgasser Adam , Marley Mark S. , Apai Dániel , Suárez Genaro , Plavchan Peter 
Published: April 2021

Abstract
We present the discovery of rapid photometric variability in three ultra-cool dwarfs from long-duration monitoring with the Spitzer Space Telescope. The T7, L3.5, and L8 dwarfs have the shortest photometric periods known to date:

hr,

hr, and

hr, respectively. We confirm the rapid rotation through moderate-resolution infrared spectroscopy, which reveals projected rotational velocities between 79 and 104 km s−1. We compare the near-infrared spectra to photospheric models to determine the objects’ fundamental parameters and radial velocities. We find that the equatorial rotational velocities for all three objects are ≳100 km s−1. The three L and T dwarfs reported here are the most rapidly spinning and likely the most oblate field ultra-cool dwarfs known to date. Correspondingly, all three are excellent candidates for seeking auroral radio emission and net optical/infrared polarization. As of this writing, 78 L-, T-, and Y-dwarf rotation periods have now been measured. The clustering of the shortest rotation periods near 1 hr suggests that brown dwarfs are unlikely to spin much faster.
Longevity Is the Key Factor in the Search for Technosignatures
Authors: Balbi Amedeo , Ćirković Milan M. 
Published: April 2021

Abstract
It is well known that the chances of success of the search for extraterrestrial intelligence depend on the longevity of technological civilizations or, more broadly, on the duration of the signs of their existence, or technosignatures. Here, we re-examine this general tenet in more detail, and we show that its broader implications have not been given their proper significance. In particular, an often overlooked aspect is that the duration of a technosignature is in principle almost entirely separable from the age of the civilization that produces it. We propose a classification scheme of technosignatures based on their duration, and we use Monte Carlo simulations to show that, given an initial generic distribution of Galactic technosignatures, only the ones with the longest duration are likely to be detected. This tells us, among other things, that looking for a large number of short-lived technosignatures is a weaker observational strategy than focusing the search on a few long-lived ones. It also suggests abandoning any anthropocentric bias in approaching the question of extraterrestrial intelligence. We finally give some ideas of possible pathways that can lead to the establishment of long-lived technosignatures.
Virialization of the Inner CGM in the FIRE Simulations and Implications for Galaxy Disks, Star Formation, and Feedback
Authors: Stern Jonathan , Faucher-Giguère Claude-André , Fielding Drummond , Quataert Eliot , Hafen Zachary , Gurvich Alexander B. , Ma Xiangcheng , Byrne Lindsey , El-Badry Kareem , Anglés-Alcázar Daniel , Chan T. K. , Feldmann Robert , Kereš Dušan , Wetzel Andrew , Murray Norman , Hopkins Philip F. 
Published: April 2021

Abstract
We use the FIRE-2 cosmological simulations to study the formation of a quasi-static, virial-temperature gas phase in the circumgalactic medium (CGM) at redshifts 0 < z < 5 and how the formation of this virialized phase affects the evolution of galactic disks. We demonstrate that when the halo mass crosses ∼1012
M
⊙, the cooling time of shocked gas in the inner CGM (∼0.1R
vir, where R
vir is the virial radius) exceeds the local free-fall time. The inner CGM then experiences a transition from on average subvirial temperatures (T ≪ T
vir), large pressure fluctuations, and supersonic inflow/outflow velocities to virial temperatures (T ∼ T
vir), uniform pressures, and subsonic velocities. This transition occurs when the outer CGM (∼0.5R
vir) is already subsonic and has a temperature ∼T
vir, indicating that the longer cooling times at large radii allow the outer CGM to virialize at lower halo masses than the inner CGM. This outside-in CGM virialization scenario is in contrast with inside-out scenarios commonly envisioned based on more idealized simulations. We demonstrate that inner CGM virialization coincides with abrupt changes in the central galaxy and its stellar feedback: the galaxy settles into a stable rotating disk, star formation transitions from “bursty” to “steady,” and stellar-driven galaxy-scale outflows are suppressed. Our results thus suggest that CGM virialization is initially associated with the formation of rotation-dominated thin galactic disks, rather than with the quenching of star formation as often assumed.
Analytic Estimates of the Achievable Precision on the Physical Properties of Transiting Planets Using Purely Empirical Measurements
Authors: Rodríguez Martínez Romy , Stevens Daniel J. , Gaudi B. Scott , Schulze Joseph G. , Panero Wendy R. , Johnson Jennifer A. , Wang Ji 
Published: April 2021

Abstract
We present analytic estimates of the fractional uncertainties on the mass, radius, surface gravity, and density of a transiting planet, using only empirical or semi-empirical measurements. We first express these parameters in terms of transit photometry and radial velocity (RV) observables, as well as the stellar radius R
⋆, if required. In agreement with previous results, we find that, assuming a circular orbit, the surface gravity of the planet (g

p
) depends only on empirical transit and RV parameters, namely the planet period P, the transit depth δ, the RV semi-amplitude K
⋆, the transit duration T, and the ingress/egress duration τ. However, the planet mass and density depend on all these quantities, plus R
⋆. Thus, an inference about the planet mass, radius, and density must rely upon an external constraint such as the stellar radius. For bright stars, stellar radii can now be measured nearly empirically by using measurements of the stellar bolometric flux, the effective temperature, and the distance to the star via its parallax, with the extinction A

V
being the only free parameter. For any given system, there is a hierarchy of achievable precisions on the planetary parameters, such that the planetary surface gravity is more accurately measured than the density, which in turn is more accurately measured than the mass. We find that surface gravity provides a strong constraint on the core mass fraction of terrestrial planets. This is useful, given that the surface gravity may be one of the best measured properties of a terrestrial planet.
Cosmological Constraints from Galaxy Cluster Sparsity, Cluster Gas Mass Fraction, and Baryon Acoustic Oscillation Data
Authors: Corasaniti Pier-Stefano , Sereno Mauro , Ettori Stefano 
Published: April 2021

Abstract
In recent years, the availability of large, complete cluster samples has enabled numerous cosmological parameter inference analyses using cluster number counts. These have provided constraints on the cosmic matter density Ω
m
and the amplitude of matter density fluctuations σ
8 alternative to that obtained from other standard probes. However, systematics uncertainties, such as the mass calibration bias and selection effects, may still significantly affect these data analyses. Hence, it is timely to explore other proxies of galaxy cluster cosmology that can provide cosmological constraints complementary to those obtained from cluster number counts. Here we use measurements of the cluster sparsity from weak-lensing mass estimates of the LC2-single and HSC-XXL cluster catalogs to infer constraints on a flat ΛCDM model. The cluster sparsity has the advantage of being insensitive to selection and mass calibration bias. On the other hand, it primarily constrains a degenerate combination of Ω
m
and σ
8 (along approximately constant curves of

and, to a lesser extent, the reduced Hubble parameter h. Hence, in order to break the internal parameter degeneracies, we perform a combined likelihood analysis of the cluster sparsity estimates with cluster gas mass fraction measurements and BAO data. We find marginal constraints that are competitive with those from other standard cosmic probes: Ω
m
= 0.316 ± 0.013, σ
8 = 0.757 ± 0.067 (corresponding to S
8 = 0.776 ± 0.064), and h = 0.696 ± 0.017 at 1σ. Moreover, assuming a conservative Gaussian prior on the mass bias of gas mass fraction data, we find a lower limit on the gas depletion factor Y

b,500c
≳ 0.89.
Comptonization as an Origin of the Continuum in Intermediate Polars
Authors: Maiolino T. , Titarchuk L. , Wang W. , Frontera F. , Orlandini M. 
Published: April 2021

Abstract
In this paper we test if the ∼0.3–15 keV XMM-Newton EPIC pn spectral continuum of IPs can be described by the thermal Comptonization compTT model. We used publicly observations of 12 IPs (AE Aqr, EX Hya, V1025 Cen, V2731 Oph, RX J2133.7+5107, PQ Gem, NY Lup, V2400 Oph, IGR J00234+6141, IGR J17195-4100, V1223 Sgr, and XY Ari). We find that our modeling is capable of fitting well the average spectral continuum of these sources. In this framework, UV/soft X-ray seed photons (with 〈kT
s〉 of 0.096 ± 0.013 keV) coming presumably from the star surface are scattered off by electrons present in an optically thick plasma (with 〈kT
e〉 of 3.05 ± 0.16 keV and optical depth 〈τ〉 of 9.5 ± 0.6 for plane geometry) located nearby (on top) to the more central seed photon emission regions. A soft blackbody (bbody) component is observed in 5 out of the 13 observations analyzed, with a mean temperature 〈kT

bb
〉 of 0.095 ± 0.004 keV. We observed that the spectra of IPs show in general two photon indices Γ, which are driven by the source luminosity and optical depth. Low luminosity IPs show 〈Γ〉 of 1.83 ± 0.19, whereas high luminosity IPs show lower 〈Γ〉 of 1.34 ± 0.02. Moreover, the good spectral fits of PQ Gem and V2400 Oph indicate that the polar subclass of CVs may be successfully described by the thermal Comptonization as well.
SILVERRUSH X: Machine Learning-aided Selection of 9318 LAEs at z = 2.2, 3.3, 4.9, 5.7, 6.6, and 7.0 from the HSC SSP and CHORUS Survey Data
Authors: Ono Yoshiaki , Itoh Ryohei , Shibuya Takatoshi , Ouchi Masami , Harikane Yuichi , Yamanaka Satoshi , Inoue Akio K. , Amagasa Toshiyuki , Miura Daichi , Okura Maiki , Shimasaku Kazuhiro , Iwata Ikuru , Taniguchi Yoshiaki , Fujimoto Seiji , Iye Masanori , Jaelani Anton T. , Kashikawa Nobunari , Kikuchihara Shotaro , Kikuta Satoshi , Kobayashi Masakazu A. R. , Kusakabe Haruka , Lee Chien-Hsiu , Liang Yongming , Matsuoka Yoshiki , Momose Rieko , Nagao Tohru , Nakajima Kimihiko , Tadaki Ken-ichi 
Published: April 2021

Abstract
We present a new catalog of 9318 Lyα emitter (LAE) candidates at z = 2.2, 3.3, 4.9, 5.7, 6.6, and 7.0 that are photometrically selected by the SILVERRUSH program with a machine learning technique from large area (up to 25.0 deg2) imaging data with six narrowband filters taken by the Subaru Strategic Program with Hyper Suprime-Cam and a Subaru intensive program, Cosmic HydrOgen Reionization Unveiled with Subaru. We construct a convolutional neural network that distinguishes between real LAEs and contaminants with a completeness of 94% and a contamination rate of 1%, enabling us to efficiently remove contaminants from the photometrically selected LAE candidates. We confirm that our LAE catalogs include 177 LAEs that have been spectroscopically identified in our SILVERRUSH programs and previous studies, ensuring the validity of our machine learning selection. In addition, we find that the object-matching rates between our LAE catalogs and our previous results are ≃80%–100% at bright NB magnitudes of ≲24 mag. We also confirm that the surface number densities of our LAE candidates are consistent with previous results. Our LAE catalogs will be made public on our project webpage.
Molecular Clouds in the Second Quadrant of the Milky Way Midplane from l = 104.°75 to l = 119.°75 and b = −5.°25 to b = 5.°25
Authors: Ma Yuehui , Wang Hongchi , Li Chong , Lin Lianghao , Sun Yan , Yang Ji 
Published: April 2021

Abstract
In this work, we study the properties of molecular clouds in the second quadrant of the Milky Way Midplane, from l = 104.°75 to l = 119.°75, and b = −5.°25 to b = 5.°25, using the 12CO, 13CO, and C18O J = 1 − 0 emission line data from the Milky Way Imaging Scroll Painting project. We identify 857 and 300 clouds in the 12CO and 13CO spectral cubes, respectively, using the DENDROGRAM + SCIMES algorithms. The distances of the molecular clouds are estimated, and physical properties such as the mass, size, and surface densities of the clouds are tabulated. The molecular clouds in the Perseus Arm are about 30−50 times more massive, and 4−6 times larger than the clouds in the Local Arm. This result, however, is likely to be biased by distance selection effects. The surface densities of the clouds are enhanced in the Perseus Arm, with an average value of ∼100 M
⊙ pc−2. Here. we select the 40 most extended (>0.35 arcdeg2) molecular clouds from the 12CO catalog to build the H2 column density probability distribution function (N-PDF). Some 78% of the N-PDFs of the selected molecular clouds are well fitted with log-normal functions with only small deviations at high densities, corresponding to star-forming regions with scales of ∼1–5 pc in the Local Arm, and ∼5–10 pc in the Perseus Arm. About 18% of the selected molecular clouds have power-law N-PDFs at high densities. In these molecular clouds, the majority of the regions fitted with the power law correspond to molecular clumps at sizes of ∼1 pc, or filaments at widths of ∼1 pc.