bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fixing Design Inconsistencies of Polymorphic Methods using Swarm Intelligence
Authors: George Renu , Samuel Philip 
Published: February 2021

Background: Modern industry is heavily dependent on software. The complexity of designing and developing software is a serious engineering issue. With the growing size of software systems and increase in complexity, inconsistencies arise in software design and intelligent techniques are required to detect and fix inconsistencies.
Aim: Current industrial practice of manually detecting inconsistencies is time consuming, error prone and incomplete. Inconsistencies arising as a result of polymorphic object interactions are hard to trace. We propose an approach to detect and fix inconsistencies in polymorphic method invocations in sequence models.
Method: A novel intelligent approach based on self regulating particle swarm optimization to solve the inconsistency during software system design is presented. Inconsistency handling is modelled as an optimization problem that uses a maximizing fitness function. The proposed approach also identifies the changes required in the design diagrams to fix the inconsistencies.
Result: The method is evaluated on different software design models involving static and dynamic polymorphism and inconsistencies are detected and resolved.
Conclusion: Ensuring consistency of design is highly essential to develop quality software and solves a major design issue for practitioners. In addition, our approach helps to reduce the time and cost of developing software.
Production d’autoreformulations autoamorcées par des apprenants adultes du français et capacité de mémoire de travail
Authors: Simard Daphnee , Molokopeeva Tatiana , Zhang Yan Qing 
Published: February 2021

L’étude rapportée dans cet article avait pour objectif d’examiner la relation entre les autoreformulations autoamorcées, soit les révisions que les locuteurs amorcent et exécutent sur leur propre discours (Salonen et Laakso, 2009, p. 859) et la mémoire de travail, définie comme étant un système à capacité limitée responsable de l’emmagasinage temporaire et de la manipulation de l’information (Baddeley, 2012). Bien que quelques études aient examiné la relation entre les autoreformulations autoamorcées et la mémoire de travail, les résultats obtenus présentent des divergences que des différences d’ordre méthodologique permettent d’expliquer. Nous avons donc voulu jeter un éclairage nouveau sur la relation entre ces deux variables en observant les autoreformulations autoamorcées à l’aide d’une tâche de narration à partir d’images et en ayant recours à une tâche numérique complexe afin de mesurer la mémoire de travail. Trente adultes locuteurs non natifs du français ont participé à l’étude. Les résultats obtenus des analyses factorielles en composantes principales montrent une relation différenciée selon le type d’autoreformulations autoamorcées produit.
Review of Taguchi, N., & Kim, Y. (Eds.). (2018). Task-based approaches to teaching and assessing pragmatics. John Benjamins Publishing Company.
Authors: Feng Yali , Jang Gyewon 
Published: February 2021

Book review:
Taguchi, N., & Kim, Y. (Eds.). (2018). Task-based approaches to teaching and assessing pragmatics. John Benjamins Publishing Company. https://doi.org/10.1075/tblt.10
Morphological-based Classifications of Radio Galaxies Using Supervised Machine-learning Methods Associated with Image Moments
Authors: Sadeghi Mohammad , Javaherian Mohsen , Miraghaei Halime 
Published: February 2021

Abstract
With the advent of new high-resolution instruments for detecting and studying radio galaxies with different morphologies, the need for the use of automatic classification methods is undeniable. Here, we focused on the morphological-based classification of radio galaxies known as Fanaroff–Riley (FR) type I and type II via supervised machine-learning approaches. Galaxy images with a resolution of 5″ at 1.4 GHz provided by the Faint Images of the Radio Sky at Twenty centimeters (FIRST) survey are employed. The radial Zernike polynomials are exploited to extract image moments. Then, the rotation, translation, and scale-invariant moments of images are used to form a training set (65% of the radio galaxy sample) and a test set (the remaining 35%). The classes of the test set are determined by two classifiers: a support vector machine and a twin support vector machine (TWSVM). In addition the genetic algorithm is employed to optimize the length of moment series and to find the optimum values of the parameters of the classifiers. The labels of outputs are compared to identify the best performance classifier. To do this the confidence level of classifications is estimated by four different metrics: precision, recall, F1 score, and accuracy. All tests show that implementing TWSVM with the radial basis function as a kernel achieves a confidence level of more than 95% in grouping galaxies.
TOI-811b and TOI-852b: New Transiting Brown Dwarfs with Similar Masses and Very Different Radii and Ages from the TESS Mission
Authors: Carmichael Theron W. , Quinn Samuel N. , Zhou George , Grieves Nolan , Irwin Jonathan M. , Stassun Keivan G. , Vanderburg Andrew M. , Winn Joshua N. , Bouchy Francois , Brasseur Clara E. , Briceño César , Caldwell Douglas A. , Charbonneau David , Collins Karen A. , Colon Knicole D. , Eastman Jason D. , Fausnaugh Michael , Fong William , Fűrész Gábor , Huang Chelsea , Jenkins Jon M. , Kielkopf John F. , Latham David W. , Law Nicholas , Lund Michael B. , Mann Andrew W. , Ricker George R. , Rodriguez Joseph E. , Schwarz Richard P. , Shporer Avi , Tenenbaum Peter , Wood Mackenna L. , Ziegler Carl 
Published: February 2021

Abstract
We report the discovery of two transiting brown dwarfs (BDs), TOI-811b and TOI-852b, from NASA’s Transiting Exoplanet Survey Satellite mission. These two transiting BDs have similar masses but very different radii and ages. Their host stars have similar masses, effective temperatures, and metallicities. The younger and larger transiting BD is TOI-811b at a mass of M
b = 59.9 ± 13.0M

J
and radius of R
b = 1.26 ± 0.06R
J, and it orbits its host star in a period of P = 25.16551 ± 0.00004 days. We derive the host star’s age of

Myr from an application of gyrochronology. The youth of this system, rather than external heating from its host star, is why this BD’s radius is relatively large. This constraint on the youth of TOI-811b allows us to test substellar mass–radius evolutionary models at young ages where the radius of BDs changes rapidly. TOI-852b has a similar mass at M

b
= 53.7 ± 1.4M

J
but is much older (4 or 8 Gyr, based on bimodal isochrone results of the host star) and is also smaller with a radius of R

b
= 0.83 ± 0.04R
J. TOI-852b’s orbital period is P = 4.94561 ± 0.00008 days. TOI-852b joins the likes of other old transiting BDs that trace out the oldest substellar mass–radius evolutionary models where contraction of the BD’s radius slows and approaches a constant value. Both host stars have a mass of M
⋆ = 1.32M
⊙ ± 0.05 and differ in their radii, T
eff, and [Fe/H], with TOI-811 having R
⋆ = 1.27 ± 0.09R
⊙, T
eff = 6107 ± 77 K, and [Fe/H] = + 0.40 ± 0.09 and TOI-852 having R
⋆ = 1.71 ± 0.04R
⊙, T
eff = 5768 ± 84 K, and [Fe/H] = + 0.33 ± 0.09. We take this opportunity to examine how TOI-811b and TOI-852b serve as test points for young and old substellar isochrones, respectively.
Afterglow Light Curves of Nonrelativistic Ejecta Mass in a Stratified Circumstellar Medium
Authors: Fraija N. , Kamenetskaia B. Betancourt , Dainotti M. G. , Duran R. Barniol , Gámez A. Gálvan , Dichiara S. , Pedreira A. C. Caligula do E. S. 
Published: February 2021

Abstract
We present the afterglow light curves produced by the deceleration of a nonrelativistic ejecta mass in a stratified circumstellar medium with a density profile n(r) ∝ r
−k
with k = 0, 1, 1.5, 2, and 2.5. Once the ejecta mass is launched with equivalent kinetic energy parameterized by E(>β) ∝ β
−α
(where β is the ejecta velocity) and propagates into the surrounding circumstellar medium, it first moves with constant velocity (the free-coasting phase), and later it decelerates (the Sedov–Taylor expansion). We present the predicted synchrotron and synchrotron self-Compton light curves during the free-coasting phase and the subsequent Sedov–Taylor expansion. In particular cases, we show the corresponding light curves generated by the deceleration of several ejecta masses with different velocities launched during the coalescence of binary compact objects and the core collapse of dying massive stars, which will contribute at distinct timescales, frequencies, and intensities. Finally, using the multiwavelength observations and upper limits collected by a large campaign of orbiting satellites and ground telescopes, we constrain the parameter space of both the kilonova (KN) afterglow in GW170817 and the possibly generated KN afterglow in S190814bv. Further observations on timescales of years post-merger are needed to derive tighter constraints.
Super-Eddington Mass Growth of Intermediate-mass Black Holes Embedded in Dusty Circumnuclear Disks
Authors: Toyouchi Daisuke , Inayoshi Kohei , Hosokawa Takashi , Kuiper Rolf 
Published: February 2021

Abstract
We perform the first three-dimensional radiation hydrodynamical simulations that investigate the growth of intermediate-mass BHs (IMBHs) embedded in massive self-gravitating, dusty nuclear accretion disks. We explore the dependence of mass accretion efficiency on the gas metallicity Z and mass injection at super-Eddington accretion rates from the outer galactic disk

M

̇

in

, and we find that the central BH can be fed at rates exceeding the Eddington rate only when the dusty disk becomes sufficiently optically thick to ionizing radiation. In this case, mass outflows from the disk owing to photoevaporation are suppressed, and thus a large fraction (≳40%) of the mass injection rate can feed the central BH. The conditions are expressed as

M

̇

in

>
2.2
×

10

−
1

M

⊙

yr

−
1

(
1
+
Z

/

10

−
2

Z

⊙

)

−
1

(

c

s

/

10

km

s

−
1

)

, where c
s is the sound speed in the gaseous disk. With increasing numerical resolution, vigorous disk fragmentation reduces the disk surface density, and dynamical heating by formed clumps makes the disk geometrically thicker. As a result, the photoevaporative mass-loss rate rises and thus the critical injection rate increases for fixed metallicity. This process enables super-Eddington growth of BHs until the BH mass reaches

M

BH

∼

10

7
–
8

M

⊙

, depending on the properties of the host dark-matter halo and metal-enrichment history. In the assembly of protogalaxies, seed BHs that form in overdense regions with a mass variance of 3–4σ at z ∼ 15–20 are able to undergo short periods of rapid growth and transit into the Eddington-limited growth phase afterward to be supermassive BHs observed at z > 6–7.
1000 Days of the Lowest-frequency Emission from the Low-luminosity GRB 171205A
Authors: Maity Barun , Chandra Poonam 
Published: February 2021

Abstract
We report the lowest-frequency measurements of gamma-ray burst (GRB) 171205A with the upgraded Giant Metrewave Radio Telescope (uGMRT) covering a frequency range of 250–1450 MHz and a period of 4–937 days. It is the first GRB afterglow detected in the 250–500 MHz frequency range and the second brightest GRB detected with the uGMRT. Even though the GRB was observed for nearly 1000 days, there is no evidence of a transition to a nonrelativistic regime. We also analyzed the archival Chandra X-ray data on day ∼70 and day ∼200. We also found no evidence of a jet break from the analysis of combined data. We fit synchrotron afterglow emission arising from a relativistic, isotropic, self-similar deceleration as well as from a shock breakout of a wide-angle cocoon. Our data also allowed us to discern the nature and the density of the circumburst medium. We found that the density profile deviates from a standard constant density medium and suggests that the GRB exploded in a stratified wind-like medium. Our analysis shows that the lowest-frequency measurements covering the absorbed part of the light curves are critical to unraveling the GRB environment. Our data combined with other published measurements indicate that the radio afterglow has a contribution from two components: a weak, possibly slightly off-axis jet and a surrounding wider cocoon, consistent with the results of Izzo et al. The cocoon emission likely dominates at early epochs, whereas the jet starts to dominate at later epochs, resulting in flatter radio light curves.
DNA metabarcoding and morphological methods show complementary patterns in the metacommunity organization of lentic epiphytic diatoms
Authors: Nistal Alejandro , Garcia Pedro , Garcia Jorge , Borrego María , Blanco Saúl , Bécares Eloy 
Published: February 2021

Diatoms are important organisms in freshwater ecosystems due to their position as primary producers and therefore, analyzing their communities provides relevant information on ecosystem functioning. Diatoms have historically been identified based on morphological traits, which is time-consuming and requires well-trained specialists. Nevertheless, DNA barcoding offers an alternative approach to overcome some limitations of the morphological method. Here, we assess if both approaches are comparable methods to study patterns and mechanisms (including environmental filtering and dispersal limitation) of epiphytic diatom metacommunities using a comprehensive dataset from 22 Mediterranean ponds at different taxonomic resolutions. We used a fragment of rbcL barcode gene combined with High-Throughput Sequencing to infer diatom community composition. The overall degree of correspondence between both approaches was assessed by Procrustean rotation analysis and Procrustean randomization tests, whereas the role of local environmental variables and geographical distances was studied using a comprehensive combination of BIOENV, Mantel tests and distance-based redundancy analysis. Our results showed a relatively poor correspondence in the compositional variation of diatom metacommunity between both approaches. We speculate that the incompleteness of the reference database and the bioinformatics processing are the biases most likely affecting the molecular approach, whereas the limited counting effort and the presence of cryptic species are presumably the major biases related with the morphological method. On the other hand, variation in diatom community composition detected with both approaches was strongly related to the environmental template, which may be related with the narrow ecological niche and the strong preferences for particular substrata of some diatom species. Nevertheless, we found no significant relationship between compositional variation and geographical distances at regional extent.
Overall, our work highlights the importance of DNA metabarcoding to address empirical research questions of community ecology in freshwaters, especially once the reference databases include most genotypes of occurring taxa and bioinformatics biases are overcome.
Online course in conjunction with face-to-face workshops to improve writing skills leading towards more publications in peer reviewed journals
Authors: Shoko Amon P , Kimirei Ismael A , Sekadende Baraka C , Kishe Mary A , Sailale Innocent E 
Published: February 2021

Background:&nbsp;Researchers in the developing countries often have inadequate scientific writing skills to publish their research in international peer reviewed journals.
Objectives: To improve the research-and proposal-writing skills of researchers and to evaluate the impact of this intervention.
Methods: An off-the-shelf online course (AuthorAID, developed by INASP) was embedded in the Tanzania Fisheries Research Institute&rsquo;s (TAFIRI) website and offered to the institute researchers in Tanzania. The 8-week course was followed by a 2-day face- to-face workshop that used the course material contextualized to local conditions, and the combination was repeated one more time.
Results: A total of 47 participants completed the course and attended the workshop: 21 (54%) completed the course in 2016 and 26 (67%) in 2017. The number of papers published annually by TAFIRI staff more than tripled between 2016 and 2019 after the AuthorAID intervention, most of them (114, or 91%) by researchers who had undergone the training.
Conclusion:&nbsp;Embedding and contextualizing proven learning materials, such as the AuthorAID online course, can be an economical and effective approach to improving the writing skills of scientists in developing countries.
Détours artistiques et pratiques translinguistiques au sein d'un scénario télécollaboratif inspiré par le cinéma
Authors: Degache Christian , Silva Regina Célia da 
Published: February 2021

Cette étude vise à apprécier quelques effets de deux nouveautés introduites dans un scénario télécollaboratif en intercompréhension proposé aux étudiantes et étudiants de groupes distants, locuteurs de différentes langues romanes : la prédéfinition d'un thème général induit par une sélection de films ; la liberté de définir la tâche finale et ses modalités de réalisation. L'analyse porte sur deux étapes du scénario : l'étape interactionnelle initiale puis l'étape collaborative. Dans la première, l'expression des attentes et celle des étonnements sont identifiées ; dans la seconde, les réalisations de six groupes de travail ayant opté pour une tâche créative sont rapportées. Deux questions sont abordées : en quoi les dimensions esthétique, narrative et sociohistorique des films de la sélection et les nouvelles flexibilités du scénario stimulent-elles distanciation, récit de soi et dynamique créative ? Quelle est la nature des pratiques plurilingues activées ? Les résultats obtenus montrent un impact réel des "détours artistiques" introduits dans la formation, même si cela reste fragile et dépendant, d'une part, d'ajustements du scénario en fonction des contraintes temporelles, institutionnelles et techniques, et, d'autre part, de l'orchestration des outils numériques et des modalités de pilotage et d'accompagnement de la session.
Joaquim Tenreiro – O processo de modernização do móvel Brasileiro
Authors: Nascimento Myrna de Arruda , De Lima André Moreira 
Published: February 2021

O projeto tem como principal objetivo o estudo da experimentação com madeira para a construção de móveis e também o estudo de uma identidade visual particular, criada por Joaquim Tenreiro para o contexto do design brasileiro contemporâneo. Este artista e designer procurou projetar móveis ao longo da sua atuação profissional, buscando a leveza visual aliada às características da cultura brasileira, produzindo uma tradução dos movimentos artísticos e arquitetônicos que influenciaram a produção do design nacional (baseado até então no estilo europeu) a partir dos movimentos de vanguarda do século XX. Seu trabalho constrói uma ponte entre a Arte, o Design e a sociedade brasileira, visto que o autor investigava a representação visual do Brasil a partir da observação e análise da arquitetura, do design (principalmente em nível internacional), e das artes plásticas e aplica aspectos de linguagem e elementos gráficos no mobiliário, valorizando a estética proposta e sua utilidade prática.
ICT in Primary Education. Review of its importance and a proposal
Authors: González Mario Gómez , Alonso Jose María Rabal 
Published: February 2021

This innovative study arises in response to the current educational reality, observed during an internship in a specific educational center. It is a methodological proposal to be applied in teaching, specifically, primary school students, to improve the academic performance of these students.
The educational reality that future teachers face is, without a doubt, a difficult challenge that, with motivation and work, we must achieve to meet the objectives set each academic year and there is where the use of ICT takes its part.
Transposición del músculo sartorio para la cobertura de pseudoaneurisma femoral séptico y área cruenta
Authors: Figueroa María Fernanda Espinoza , Ríos Miguel López , García Mariza Domínguez , Chaparro Elsa Britsel Bojórquez , Rodríguez Ghizzelth Priscila Durón , Armendáriz Rubén Rentería , Tapia María Elena Martínez 
Published: February 2021

El colgajo de músculo sartorio ha considerado la solapa como elección para la reconstrucción anatómica de la ingle de la herida, porque la proximidad a los vasos femorales permite un fácil acceso y la exposición a través de la misma incisión inguinal. El músculo se moviliza distalmente más allá del área de la reconstrucción vascular. Es entonces dividido lo más cerca posible a la ilíaca supero- anterior, columna vertebral y se hace girar en sentido medial para cubrir las estructuras del triángulo femoral. Al girar el músculo 180 ° en su eje medial, los haces vasculares mediales se conservan. La parte tendinosa del músculo se asegura entonces al ligamento inguinal, cubriendo de este modo los vasos femorales. Se colocan suturas adicionales en el lado medial del musculo girado para asegurarlo a los tejidos blandos adyacentes; para de este modo secuestrar completamente las estructuras vasculares femorales y los injertos. Un drenaje de succión cerrado se coloca en el antiguo cauce del músculo sartorio.
Research Progress on the Polymeric Immunoglobulin Receptor (pIgR) in Fish
Authors: Xia Hu , Yang Pinhong , Liu Liangguo , Luo Yushuang , Wang Wenbin , Cheng Kezhong , Ye Liang , Hou Dong , Zhao Jiemei , Wu Xian 
Published: February 2021

There are a large number of pathogens in the water where fish live, and the mucosal-associated lymphoid tissues (MALTs), such as skin, gill and intestine, are the first contact parts when pathogens infect fish. The secreted mucus of these tissues constitutes the first barrier for fish against the invasion of external pathogens. Mucosal immunity can identify and neutralize pathogens and induces immunocytes to devour pathogens and the like. As a key factor in the mucosal immune system, the polymeric immunoglobulin receptor (pIgR) is capable of mediating the transport and secretion of polymeric immunoglobulins towards mucus. The effective secretion of the pIgR is necessary for polymeric immunoglobulins (pIg) to exert mucosal defence and plays a significant role in fish immunity. With the deepening of research into fish immunoglobulins, the pIgR has become a research hotspot. The molecular structure, genetic structure and expression pattern of the pIgR and the important role it plays in mucosal immunity were summarized in this study, which contributed to a deeper understanding of fish mucosal immunity and laid a foundation for further exploration of the action mechanism and functions of the pIgR in fish.