bluuebunny/crossref_metadata_2025 huggingface dataset:
Relationships between Photospheric Vertical Electric Currents and Hard X-Ray Sources in Solar Flares: Statistical Study
Authors: Zimovets I. V. , Sharykin I. N. , Gan W. Q.
Published: March 2020

There are still debates over whether particle acceleration in solar flares may occur due to interruption of electric currents flowing along magnetic loops. To contribute to this debate, we performed the first statistical study of relationships between flare hard X-ray (HXR; 50–100 keV) sources observed by the Ramaty High-Energy Solar Spectroscopic Imager and photospheric vertical electric currents (PVECs, j

r
) calculated using vector magnetograms obtained with the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory. We analyzed a sample of 48 flares from the C3.0 to X3.1 class and were observed in the central part of the solar disk by both instruments in 2010–2015. We found that ≈70% of all HXR sources overlapped with islands or ribbons of enhanced (

statampere cm−2) PVECs. However, less than ≈40% of the HXR sources overlapped with PVEC maxima, with an accuracy of ±3″. In more than half of the flares, there were HXR sources outside of regions of enhanced PVECs. We found no correlation between the intensity of the HXR sources and PVEC density or total PVEC under them. No systematic dissipation of PVECs under the HXR sources was found during the flares. Collectively, the results do not support the current-interruption flare models. However, the results indicate the importance of the presence of longitudinal currents in flare regions. To understand their specific role in the processes of energy release, plasma heating, and acceleration of particles requires further investigation.
Probing the Bright End of the Rest-frame Ultraviolet Luminosity Function at z = 8–10 with Hubble Pure-parallel Imaging
Authors: Rojas-Ruiz Sofía , Finkelstein Steven L. , Bagley Micaela B. , Stevans Matthew , Finkelstein Keely D. , Larson Rebecca , Mechtley Mira , Diekmann James
Published: March 2020

Looking for bright galaxies born in the early universe is fundamental to investigating the Epoch of Reionization, the era when the first stars and galaxies ionized the intergalactic medium. We utilize Hubble Space Telescope pure-parallel imaging to select galaxy candidates at a time 500–650 million years after the Big Bang, which corresponds to redshifts z ∼ 8–10. These data come from the Brightest of Reionizing Galaxies Survey (BoRG) Cycle 22 data set, which consists of pure-parallel imaging in ∼90 different lines of sight that sum up to an area of ∼420 arcmin2. This survey uses five filters and has the advantage (compared to the Cycle 21 BoRG program) of including imaging in the JH
140 band, covering continuous wavelengths from the visible to near-infrared (λ = 0.35–1.7 μm). This allows us to perform a reliable selection of galaxies at z ≥ 8 using the photometric-redshift technique. We use these galaxy candidates to constrain the bright end of the rest-frame ultraviolet luminosity function in this epoch. These candidates are excellent targets for follow-up observations, particularly with the James Webb Space Telescope.
The ALMA Spectroscopic Survey in the HUDF: A Model to Explain Observed 1.1 and 0.85 mm Dust Continuum Number Counts
Authors: Popping Gergö , Walter Fabian , Behroozi Peter , González-López Jorge , Hayward Christopher C. , Somerville Rachel S. , van der Werf Paul , Aravena Manuel , Assef Roberto J. , Boogaard Leindert , Bauer Franz E. , Cortes Paulo C. , Cox Pierre , Díaz-Santos Tanio , Decarli Roberto , Franco Maximilien , Ivison Rob , Riechers Dominik , Rix Hans-Walter , Weiss Axel
Published: March 2020

We present a new semiempirical model for the dust continuum number counts of galaxies at 1.1 mm and 850 μm. Our approach couples an observationally motivated model for the stellar mass and star formation rate distribution of galaxies with empirical scaling relations to predict the dust continuum flux density of these galaxies. Without a need to tweak the IMF, the model reproduces the currently available observations of the 1.1 mm and 850 μm number counts, including the observed flattening in the 1.1 mm number counts below 0.3 mJy and the number counts in discrete bins of different galaxy properties. Predictions of our work include the following: (1) the galaxies that dominate the number counts at flux densities below 1 mJy (3 mJy) at 1.1 mm (850 μm) have redshifts between z = 1 and z = 2, stellar masses of ∼5 × 1010 M
⊙, and dust masses of ∼108 M
⊙; (2) the flattening in the observed 1.1 mm number counts corresponds to the knee of the 1.1 mm luminosity function. A similar flattening is predicted for the number counts at 850 μm; (3) the model reproduces the redshift distribution of current 1.1 mm detections; and (4) to efficiently detect large numbers of galaxies through their dust continuum, future surveys should scan large areas once reaching a 1.1 mm flux density of 0.1 mJy rather than integrating to fainter fluxes. Our modeling framework also suggests that the amount of information on galaxy physics that can be extracted from the 1.1 mm and 850 μm number counts is almost exhausted.
Morphology of TeV Gamma-Ray Emission from the Kiloparsec-scale Jets in Radio Galaxies
Authors: Bednarek W.
Published: March 2020

TeV γ rays are observed from a few nearby radio galaxies whose jets are viewed at relatively large angles toward the observer. This emission can be produced in kiloparsec-scale jets whose Lorentz factors are decelerated from values of the order of several at parsec-scale distances. We consider in detail the model in which TeV γ-ray emission is produced by the relativistic electrons in kiloparsec-scale jets that comptonize strongly beamed radiation from inner (parsec-scale) jets. As an example, we study the morphology of the TeV γ-ray emission from the decelerated kiloparsec-scale jet in the nearby radio galaxy Cen A. We show that TeV γ-ray emission can extend throughout kiloparsec-scale distances, as it is relatively smoothly distributed along jets for some parameters of the model we consider. Investigation of the morphological structure of such specific γ-ray emission by the future Cerenkov Telescope Array should provide important constraints on the content and dynamics of the kiloparsec-scale jet in Cen A.
Searching for snakes: ball python hunting in southern Togo, West Africa
Authors: D’Cruze Neil , Harrington Lauren A. , Assou Délagnon , Ronfot Delphine , Macdonald David W. , Segniagbeto Gabriel H. , Auliya Mark
Published: March 2020

The ball python (Python regius) is the single most exported live CITES-listed species from Africa, with a large proportion of snakes being sourced from Togo, West Africa, officially via a system reported nationally as “ranching”. This study represents the first in-depth review of ball python hunting being carried out by rural communities in Togo for nearly 15 years. Our approach, focused at the bottom of the trade chain, permitted extensive detailed data to be collected from hunters, and provides a unique insight into the practices, drivers and impacts associated with this type of large-scale commercial wildlife trade activity. We show that ball python hunting remains an economically valuable endeavour for these rural hunters. However, it also highlights a number of potential legal, conservation and animal welfare issues associated with the current hunting practices being carried out in Togo (and neighbouring range States) to supply the snake farms and ultimately the international exotic pet trade. Our findings suggest that the methods applied on the ground do not accurately reflect those being reported to national authorities and international regulatory mechanisms such as CITES. This irregular, if not illegal, trade may also be unsustainable, as suggested by hunters reporting that there are fewer ball pythons in the wild than there were five years previously. We recommend that additional scientific investigation (focusing on the size and status of the wild population), better management, and enforcement of regulations, are required to ensure that ball python populations are managed in a sustainable, legal and traceable way.
The first genetic assessment of wild and farmed ball pythons (Reptilia, Serpentes, Pythonidae) in southern Togo
Authors: Auliya Mark , Hofmann Sylvia , Segniagbeto Gabriel H. , Assou Délagnon , Ronfot Delphine , Astrin Jonas J. , Forat Sophia , Koffivi K. Ketoh Guillaume , D’Cruze Neil
Published: March 2020

The ball python (Python regius) is the world’s most commonly traded python species for the “exotic” pet industry. The majority of these live snakes are produced via a number of python farms in West Africa that have been in operation since the 1960s and involved with “ranching” operations since the 1990s. However, to date no thorough taxonomic review or genetic studies have been conducted within its range, despite the fact that the evaluation of a species’ genetic variability is generally considered mandatory for effective management. We used mtDNA sequence data and eight polymorphic microsatellite markers to assess the underlying population genetic structure and to test the potential of the nuclear markers to assign farm individuals to wild reference populations in southern Togo. Despite the relatively large distances between sample locations, no significant genetic population structure was found, either in mtDNA sequence data or in the microsatellite data. Instead, our data indicate considerable gene flow among the locations. The absence of a distinct population subdivision may have resulted from an anthropogenic driven admixture of populations associated with commercial wildlife trade activity in recent decades. Given the ongoing largely unregulated nature of the commercial ranching of ball pythons in West Africa, should a wild release component continue, as a first measure we recommend that the Management Authorities should develop an action plan with specific release protocols for python farms to minimise any potential negative conservation impacts resulting from admixture (genetic pollution) between farmed and wild individuals.
Social media photo content for Sierra Nevada: a dataset to support the assessment of cultural ecosystem services in protected areas
Authors: Ros-Candeira Andrea , Moreno-Llorca Ricardo , Alcaraz-Segura Domingo , Bonet-García Francisco Javier , Vaz Ana Sofia
Published: March 2020

This dataset provides crowd-sourced and georeferenced information useful for the assessment of cultural ecosystem services in the Sierra Nevada Biosphere Reserve (southern Spain). Data were collected within the European project ECOPOTENTIAL focused on Earth observations of ecosystem services. The dataset comprises 778 records expressing the results of the content analysis of social media photos published in Flickr. Our dataset is illustrated in this data paper with density maps for different types of information.
BESTMAP: behavioural, Ecological and Socio-economic Tools for Modelling Agricultural Policy
Authors: Ziv Guy , Beckmann Michael , Bullock James , Cord Anna , Delzeit Ruth , Domingo Cristina , Dreßler Gunnar , Hagemann Nina , Masó Joan , Müller Birgit , Neteler Markus , Sapundzhieva Anna , Stoev Pavel , Stenning Jon , Trajković Milica , Václavík Tomáš
Published: March 2020

Half of the European Union (EU) land and the livelihood of 10 million farmers is threatened by unsustainable land-use intensification, land abandonment and climate change. Policy instruments, including the EU Common Agricultural Policy (CAP) have so far failed to stop this environmental degradation. BESTMAP will: 1) Develop a behavioural theoretical modelling framework to take into account complexity of farmers’ decision-making; 2) Develop, adapt and customize a suite of opensource, flexible, interoperable and customisable computer models linked to existing data e.g. LPIS/IACS and remote sensing e.g. Sentinel-2; 3) Link economic, individual-farm agent-based, biophysical ecosystem services and biodiversity and geostatistical socio-economic models; 4) Produce a simple-to-use dashboard to compare scenarios of Agri-Environmental Schemes adoption; 5) Improve the effectiveness of future EU rural policies’ design, monitoring and implementation.
Une situation clinique singulière : thérapie en couple de sourds
Authors: Orlue Muriel
Published: March 2020

L’auteure présente une thérapie en couple de personnes sourdes. Les spécificités inhérentes à leur langue dont les modalités sont visuelles, où signifiant et signifié sont si proches, génèrent un sentiment d’appartenance groupale à une culture. Comment s’articule la problématique du couple avec les divers modes de communication à l’œuvre, les identités et identifications au sein de ce néo-groupe ? Les aspects transférentiels et contretransférentiels serviront de fil rouge dans le déroulement de cette thérapie particulière. Le recours à la métaphore constitue pour le thérapeute un point d’appui vers l’interfantasmatisation. Il contribue à créer une enveloppe, une pensée métaphorique, celle-ci permettant de surmonter les représentations inhibantes qui faisaient obstacle au travail d’élaboration.
L’interprétation à l’école : un inter-dit
Authors: Muraro Dorothée
Published: March 2020

Au regard de l’interprétation psychanalytique, l’interprétation à l’école pose question, aussi bien du côté de l’élève que de l’enseignant, et ce d’autant plus depuis que l’on cherche à placer l’élève en position de découvreur au sein des apprentissages : quelle interprétation est autorisée sur les copies ou en classe ? Qu’interdit-on finalement dans l’acte d’interpréter un texte d’auteur, un résultat scientifique ?
« Une technique merveilleuse » : comment faire disparaître le modèle pour saisir son image ?
Authors: Diez Verónica
Published: March 2020

David Nebreda est un photographe espagnol (né à Madrid en 1952). Dans son premier livre, Autoportraits (paru en 2000), il exposait aux yeux des spectateurs son corps amaigri à l’extrême, blessé par des coups de couteau. Une grande partie de son travail artistique est en rapport avec le miroir et la décision de produire son portrait tout en évitant l’expérience spéculaire. Grâce à un appareillage complexe, désarticulant tout le dispositif spéculaire, ces photos semblent avoir été prises par quelqu’un d’autre. Nebreda a inventé une technique « merveilleuse », qui lui permet de créer son image comme si c’était son image spéculaire sans que lui y soit. Nous aborderons ici ce rapport original à l’image et à la relation spéculaire.
An Interactive e-Book for Physics to Improve Students' Conceptual Mastery
Authors: Harjono Ahmad , Gunawan Gunawan , Adawiyah Rabiatul , Herayanti Lovy
Published: March 2020

Rotational dynamics is one of topic in physics for high school students that require visualization of its concepts. This research developed an interactive e-book for physics learning with its features consisting of multimedia content such as audio, video, animation, and simple problem-solving activities. This e-book has been validated and recommended by a team of experts. This trial aims to determine the effectiveness of e-book by students in mastering concepts, using a. quasi-experiment. The sample was chosen using purposive sampling technique at senior high school with 42 students. Data were collected using multiple choice questions. The increase of student concept mastery is determined based on the N-gain score of pretest and posttest data. The results show that the average student response to e-book is 81% in the very good criterion. The N-gain scores for the equilibrium concepts of A and B classes are 0.79 and 0.70 in the high criteria, while, the concept of rotational dynamics are 0.66 and 0.66 respectively and in the medium criterion. The increase of conceptual mastery occurs in every cognitive domain (remembering, understanding, applying, analyzing, evaluating, and creating). In conclusion, the e-book has been effective in enhancing the mastery of student concepts.
Knowledge Management and E-Learning Effectiveness: Empirical Evidence from Jordanian Higher Education Institutions
Authors: Al-Jedaiah Mohamad Noor Salih
Published: March 2020

In order to maximize the true advantage of e-learning, many higher education organizations have invested strongly in knowledge management. Yet the effect on the efficiency of e-learning of these investments remains ambiguous. The purpose of the research was therefore to determine the influence of knowledge management processes on the efficiency of e-learning in northern Jordanian private universities. The findings showed that knowledge management procedures have considerably impaired the capacity to meet the goals, excellence and quality of schooling using 101 answers by faculty members in four private colleges in the north area of Jordan. This suggests that procedures in knowledge management affect private universities ' ability to attain e-learning efficiency. In view of this research, universities should deliver the technologies they need for efficient management of their knowledge management processes and e-learning system. Universities are also to generate and share knowledge with others in a stimulating, promoting, and supportive culture.
Survival, Harvest, and Lincoln Estimates of Wood Ducks Banded in Ohio
Authors: Shirkey Brendan T. , Gates Robert J.
Published: March 2020

Wildlife agencies have carefully managed wood duck Aix sponsa populations in part through harvest regulations since the early 1900s. However, unlike many other waterfowl species in North America, waterfowl managers largely do not know breeding population size. Lincoln–Petersen methods based on harvest and band recovery data are an attractive alternative to air or ground count-based surveys for estimating populations of wood ducks by state and federal agencies that are tasked with sustainably managing harvest opportunities for this species. We used banding and recovery data to estimate annual survival rates, harvest rates, and population size in late summer (August–September) using Lincoln–Petersen methods for wood ducks banded within Ohio from 1990 to 2017. Sex, age, and daily bag limits best explained survival rates of wood ducks banded in Ohio, with lower survival rates in years with more liberal bag limits. Lincoln–Petersen estimates of population size ranged from 116,992 to 632,462 annually, and we detected a significant declining trend in population size through time. Mean harvest rates of wood ducks banded in Ohio ranged from 0.069 (adult females) to 0.121 (hatch-year males), and we detected a significant increasing trend in harvest rate through time for adult male, hatch-year male, and hatch-year female wood duck cohorts. Aerial surveys in other Great Lakes states provide comparable population estimates with our Lincoln–Petersen estimates for Ohio and also show a declining trend in population size. We recommend continued investigation into the use of Lincoln–Petersen techniques for estimating wood duck population size throughout the Great Lakes region. If declining population trends are not unique to Ohio, waterfowl managers may need to further assess the potential impact of increased harvest rates on population size to ensure sustainable harvest into the future.
L’ouvrage à cornes de Saint-Jean à Soissons : vestiges archéologiques et essai de contexte historique
Authors: Buccio Vincent
Published: March 2020

La fouille partielle d’un ouvrage avancé de la fortification urbaine de Soissons (Aisne), construit et démantelé au cours du xixe siècle, a donné l’occasion de mettre en parallèle l’abondante documentation archivistique relative à cet ouvrage et les observations de terrain. L’archéologie permet de vérifier la fiabilité des sources écrites et d’éclairer les pans de l’histoire de la fortification qui ne sont pas renseignés par les textes. Cette étude permet donc de suivre l’évolution d’un ouvrage depuis l’avant-projet jusqu’à son démantèlement, en passant par sa construction et par les aléas de son fonctionnement. À l’issue de cette étude, on mesure la pertinence de la fouille d’une structure récente, malgré le nombre élevé de documents d’archive conservés.
De la forêt au bâtiment. Approche pluridisciplinaire des couvertures de bois dans le sud-est de la France (xiie-xixe siècles)
Authors: Burri Sylvain , Labbas Vincent , Bernardi Philippe
Published: March 2020

Nonobstant une prise en compte accrue de la place du bois dans l’architecture médiévale et moderne, son usage comme matériau de couverture demeure encore méconnu. En Provence, longtemps perçue comme le pays de la tuile, le matériau bois a été considéré comme marginal et restreint à l’habitat montagnard. Cet article vise à situer ces matériaux de couverture à leur juste place dans l’économie et les techniques du bâtiment, au travers d’une recherche pluridisciplinaire, croisant les regards et les méthodes de l’histoire, de l’archéologie du bâti et de la dendrochronologie. Cette approche globale et intégrée contribue à l’histoire des techniques de construction par l’identification des différents matériaux bois utilisés et par la restitution de la chaîne opératoire de leur production, de l’acquisition de leur matière première en forêt jusqu’à leur mise en œuvre et leur vie (réfection, réemploi) sur les charpentes des bâtiments, en ville comme à la campagne, à la montagne comme en plaine. Enfin, elle participe au renouvellement des connaissances sur l’économie sud-alpine en analysant les marchés économiques et les milieux sociologiques dans lesquels s’intègrent ces produits.
L’église Saint-Martin de Savigny du xie au xviiie siècle.
Authors: Puel Olivia
Published: March 2020

Puissant seigneur ecclésiastique, le monastère Saint-Martin de Savigny occupait, au Moyen Âge central, une place importante dans le paysage politico-religieux de la région lyonnaise. Comme d’autres établissements, le monastère profita de son apogée pour mener à bien d’ambitieux projets destinés à protéger ses intérêts et à afficher, aux yeux de tous, sa légitimité et son ambition. Au même titre que son cartulaire, la reconstruction de son église principale, entre la fin du xie et le début du xiiie siècle, participa pleinement à cette entreprise. Monumental par ses dimensions comme par son architecture, ce lieu de culte fut pillé puis démantelé dans les années qui suivirent la Révolution française. Il fut longtemps négligé par les érudits, qui ne s’intéressaient pas à une église impossible à localiser dans le village. Des recherches récentes et interdisciplinaires ont pourtant mis au jour une documentation archéologique, historique et liturgique d’une richesse jusqu’alors insoupçonnée, qui permet désormais de retracer son histoire sur la longue durée, mais aussi de tenter une restitution de son état médiéval.
Quand l’exception importe : réflexions sur le rôle de certains néologismes dans le domaine de la banque-finance en anglais
Authors: Resche Catherine
Published: March 2020

Cette étude s’intéresse aux formes néologiques en anglais dans le domaine de la finance éthique dans le but de montrer l’intérêt qu’elles peuvent présenter pour le linguiste désireux de prendre le pouls de l’évolution des idées dans un milieu spécialisé. Elle s’appuie sur un corpus d’études et d’articles publiés entre 2007 et 2018 dans des revues spécialisées et qui portent sur une nouvelle finance éthique, au service du bien commun. L’analyse pose la question de la réception et de la portée de récents néologismes (amalgames, oxymores, etc.) et tente de déterminer s’ils sont annonciateurs de nouvelles valeurs ou simplement repris et détournés par certains pour donner l’illusion d’un changement et pour cacher une réalité moins souriante. Quoi qu’il en soit, on ne saurait négliger ces unités singulières, ni faire l’économie d’une veille néologique.
L’expatriation de la recherche française en Afrique subsaharienne : distinctions raciales et épistémologies scientifiques (Sénégal, Madagascar, Bénin)
Authors: Quashie Hélène
Published: March 2020

Cet article explore les pratiques sociales et académiques françaises en Afrique via l’Institut de Recherche pour le Développement. Elles révèlent des mécanismes sociaux d’isolement des chercheurs expatriés français dans les sociétés d’accueil, des hiérarchies économiques et institutionnelles vis-à-vis de leurs homologues locaux, entrainant des divisions identitaires entre acteurs qui entretiennent des processus de racialisation. Ces processus apparaissent également dans l’orientation scientifique des programmes de recherche et nourrissent une asymétrie académique en faveur de la France vis-à-vis des pays africains où sa recherche s’expatrie, en dépit de nombreuses réflexions épistémologiques.
Influential Factors in the Process of Co-Creation Experiences in the Tourism Industry
Authors: Bertan Serkan
Published: March 2020

The aim of this study is to analyze the factors that are influential in the process experience co-creation. In line with this purpose, a brief description of the study was given in the questionnaire form which was prepared, based on the literature review and the questionnaire included, questions regarding influential factors in the process of co-creation of experiences. Obtained data were analyzed through reliability, factor, and regression analyses. In the factor analysis, the statements were grouped under four factors: sharing, participant, interest, and interaction. When the influential factors in the process of co-creation were analyzed through regression analysis, the first factor was emphasized to be sharing, and content was found to be important in sharing. The second important factor was found to be the interaction between tourism service providers and tourists. The third important factor was determined as the interest for experiences. The last important factor was found to be the desire to be engaged in experiences.
Organization and Management Past to Present
Authors: Joseph Thomas
Published: March 2020

This article examined the historical evolution of organization and management theories and their applicability to practice in modern enterprise. Management and organizational theories each add something to the awareness of what managers ought to do. The contemporary approaches of management and organization theory draw upon the historical ideals of classical management and organization theories. Managers must, therefore, value the true concepts of contemporary organizational and management theories that frame the construct and decision-making processes of their particular organizations. Without a doubt, managers who make considerable efforts to transform these theories (classical and contemporary) into reality and practicality could increase productivity more than those who choose to ignore the value of these theories.
Environmental Marketing Awareness and Consumer Purchase Behaviour
Authors: Ebhote Oseremen , Odia E.O.
Published: March 2020

The focus of this article is to examine the effect of environmental marketing on consumer behavior in the food and beverage products in Nigeria. The population of this study encompasses all consumers of food and beverage sub-sector of the manufacturing industry in Edo State, Nigeria. Sampling techniques were adopted from other authors to select a sample of 322 consumers, and these methods were employed since the population is unknown (infinite) and the method is scientific in nature. Cronbach's alpha was used to determine the validity and reliability of the instruments used. The findings reveal that the three variables used for this study: environmental concern, social influence, and government regulation, had a significant relationship with consumer behavior. The study recommends among others that food and beverage firms in Nigeria should be conscious of the environmental nature of their product as consumer awareness about environmental products is gradually increasing.
Risk Management in Software Development Projects
Authors: Valério Karollay Giuliani Oliveira , Sanches da Silva Carlos Eduardo , Neves Sandra Miranda
Published: March 2020

Effective risk management contributes to the success of the software development project. The goal of this work was to identify risk management gaps, perspectives, the evolution of the theme and the study trends, in software development projects, using systematic literature review as a method. For the bibliometric analysis, articles referring to the topic were selected in the period from 2010 to 2018. As tools of analysis, Citespace and VOS Viewer software were used, allowing a comparative evaluation between the articles, as well as the analysis of clusters. Beyond content analysis of articles found. Gaps were identified for performance; team involvement; attention to failures; identification of tools for decision-making; and business strategy. In turn, perspectives were determined for research trends, such as the close relationship between business strategy, risk management and new management models. The research can propose new strategies and perspectives for risk management in software development and show their importance to the academic and practical spheres, demonstrating that the themes are complementary and important in the current technological and innovation sector.
Automatically Labelled Software Topic Model
Authors: Bouziane Youcef , Abdi Mustapha Kamel , Sadou Salah
Published: March 2020

Public software repositories (SR) maintain a massive amount of valuable data offering opportunities to support software engineering (SE) tasks. Researchers have applied information retrieval techniques in mining software repositories. Topic models are one of these techniques. However, this technique does not give an interpretation nor labels to the extracted topics and it requires manual analysis to identify them. Some approaches were proposed to automatically label the topics using tags in SR, but they do not consider the existence of spam-tags and they have difficulties to scale to large tag space. This article introduces a novel approach called automatically labelled software topic model (AL-STM) that labels the topics based on observed tags in SR. It mitigates the shortcomings of manual and automatic labelling of topics in SE. AL-STM is implemented using 22K GitHub projects and evaluated in a SE task (tag recommending) against the currently used techniques. The empirical results suggest that AL-STM is more robust in terms of MAP and nDCG, and more scalable to large tag space.
Maternal and fetal outcomes in patients with systemic lupus erythematosus
Authors: Ahmed Abdelnasir , Ibkhatra Salem , Elbraky Fathi , Alsaeiti Khaled
Published: March 2020

Objectives: Lupus is associated with a considerable risk of fetal and maternal complications. The aim of this study was to assess the maternal and fetal outcomes in pregnant women with systemic lupus erythematosus (SLE) and likely predictors of adverse outcome in Benghazi, Libya. Patients and Methods: This was a retrospective review of the outcome of sixty pregnancies among 48 SLE patients attending the rheumatology clinics at Benghazi medical center, who were pregnant from January 2008 to December 2018. Each pregnancy was counted as a separate case. Results: The mean age to conceive was 30.6±6.1 years (19–42 years). Nineteen (31.7%) patients were primigravida, and the patients' age at SLE diagnosis was 25.2 ± 5.6 years. Forty-eight of the pregnancies (80%) were planned, ten patients have preexisting hypertension (HTN), most cases were in clinical remission before pregnancy (53 patients; 88%), only seven patients were identified as having active disease, four of them had lupus nephritis based on clinical features. Secondary antiphospholipid syndrome was diagnosed in four patients. Most pregnancies (50; 83%) resulted in live birth babies, 3 (5%) of them were preterm due to preeclampsia, six pregnancies (10%) ended in spontaneous abortion, and there were four intrauterine fetal deaths. More positive cases for aCl antibodies were affected than negative cases (P = 0.005). Five pregnancies complicated by preeclampsia, three of them have preexisting HTN, thirty patients (50%) underwent vaginal delivery, twenty patients (33%) underwent cesarean section due to different obstetric indications (previous cesareans and preeclampsia). Thirteen neonates (26%) were born with low birth weight, and two neonates (3%) required neonatal intensive care unit admission; no neonatal cases of lupus or congenital cardiac problems were reported. Postnatal SLE flare was reported among 16 patients (53%); preexisting HTN was strongly associated with preeclampsia, preterm labor, and postnatal SLE flares (P-values were 0.001, 0.003, and 0.004, respectively), whereas secondary Antiphospholipid antibody syndrome (APL) was associated with preeclampsia and abortion (P = 0.005 and 0.002). Conclusion: Preexisting HTN and secondary APL are associated with an increased risk of pregnancy complications. Characteristics and outcomes in our series are comparable to previously published international cohorts.
Laparoscopic liver resection in Caroli disease
Authors: Wabitsch Simon , Schoening Wenzel , Bellingrath Julia-Sophia , Brenzing Christian , Arnold Alexander , Fehrenbach Uli , Schmelzle Moritz , Pratschke Johann
Published: March 2020

Background:

Liver resection is the treatment of choice for patients with localised Caroli disease. While liver resection was traditionally performed as open procedure, this case series aims to evaluate the safety and efficacy of minimally invasive, laparoscopic liver surgery in these patients.

Methods:

A systematic review of electronic case files of patients seen between April 2015 and December 2017 at the Department of Surgery, Charité University Hospital Berlin, was conducted. Patients with Caroli disease in whom laparoscopic liver resection had been performed were identified and analysed in this single-centre case series.

Results:

Seven patients who underwent laparoscopic liver surgery for Caroli syndrome were identified and presented with a median age of 49 (range = 44–66) years, of which four (57%) were female. Preoperatively, six patients were classified as the American Society of Anaesthesiologists (ASA) 2 and one patient as ASA 3. Two operations were performed as single-incision laparoscopic surgery, whereas the others were done as multi-incision laparoscopic surgery. One patient required a conversion to an open procedure. The length of operation varied between patients, ranging from 128 to 758 min (median = 355). The length of stay in the intensive care unit ranged from 0 to 2 days. Two patients presented with post-operative complications (Clavien–Dindo Grade ≥3a), whereas no patient died. In histopathological analysis, all patients demonstrated characteristic findings of Caroli disease and no cholangiocarcinoma was found.

Conclusion:

These results indicate that minimally invasive, laparoscopic liver surgery is a safe and efficacious treatment option for patients with Caroli disease who require liver resection.
A complex modality of achalasia, diverticulum and paraesophageal hernia treated through three-dimensional left thoracoscopy
Authors: Mpaili Eustratia , Meropouli Antonia , Mpoura Maria , Vagios Ilias , Davakis Spyridon , Liakakos Theodore , Charalabopoulos Alexandros
Published: March 2020

Herein, we report a case of a patient with recurrent dysphagia after an open transabdominal hernia repair for a Type IV paraesophageal hernia performed elsewhere. Subsequent work-up and medical records' review revealed the coexistence of a large left epiphrenic diverticulum in combination with achalasia synchronous to the recently repaired paraesophageal hernia. A three-dimensional left thoracoscopic diverticulectomy with a long esophagomyotomy was conducted under endoscopic guidance intraoperatively, with no perioperative complications. At 12 months' follow-up evaluation, the patient presents well with no documented recurrence. Cumulative experience from various medical specialties regarding esophageal motility disorders and endoscopic state-of-the-art techniques, when combined with minimally invasive surgical techniques, provide an effective management of esophageal motility syndromes, overall.
Every Separable Complex Fréchet Space with a Continuous Norm is Isomorphic to a Space of Holomorphic Functions
Authors: Bonet José
Published: March 2020

Extending a result of Mashreghi and Ransford, we prove that every complex separable infinite-dimensional Fréchet space with a continuous norm is isomorphic to a space continuously included in a space of holomorphic functions on the unit disc or the complex plane, which contains the polynomials as a dense subspace. As a consequence, we deduce the existence of nuclear Fréchet spaces of holomorphic functions without the bounded approximation.
Auto-similaridad en la generación de la forma arquitectónica. Estudios de morfología evolutiva y dinámica
Authors: Estrada Alejandra
Published: March 2020

Desde los años 60 ha sido advertido que al tratar con una entidad dotada de estructura se intente, inicialmente, determinar sus equivalencias formales dentro de los procesos de trasformación por los que pasa la entidad en el curso de su evolución, debido a que esas transformaciones dejan intactas las relaciones estructurales que las constituyen. De acuerdo con esto, se exploró la evolución de la forma partiendo del principio de auto-similaridad y obtener una visión de las entidades observadas en términos de la recursividad, similaridad y transformación de la forma. Se usaron descripciones y modelos matemáticos para la simulación de estructuras ramificadas con el fin de sintetizar la realidad de un fenómeno natural y apropiar sus estructuras.
La cerámica arquitectónica en la primera etapa de la obra de Oscar Niemeyer
Authors: De la Torre Fornés Irene
Published: March 2020

La cerámica arquitectónica ha desempeñado un papel incuestionable en las obras más relevantes de Oscar Niemeyer, a las que ha aportado valores constructivos, estéticos y culturales, contribuyendo (unas veces de forma discreta, otras con presencia insoslayable) a la originalidad de su arquitectura.

El análisis de las características cromáticas, morfológicas y simbólicas de las piezas cerámicas contenidas en los edificios más emblemáticos de su primera etapa, inserta en los albores del Movimiento Moderno, permite establecer las motivaciones que le llevaron al empleo consciente del azulejo en sus creaciones, motivaciones que van desde la desmaterialización visual de los paramentos a los intereses artísticos del propio arquitecto pasando por la alusión a la tradición brasileña entendida como reivindicación y significación.
Levantamiento y utilitas: Las funciones de los edificios históricos. La Botica del Monasterio de El Escorial
Authors: Chías Navarro Pilar , Abad Balboa Tomás
Published: March 2020

Muchos edificios históricos de gran valor patrimonial carecen de una planimetría precisa y actualizada. Esto dificulta su conocimiento integral, pues resulta difícil reconstruir aspectos tan importantes como los usos originales cuando la documentación disponible contiene imprecisiones que impiden su adecuada interpretación, e incluso contradicen la documentación escrita. Por otra parte, los levantamientos se utilizan habitualmente para definir las formas arquitectónicas yciertos aspectos constructivos visibles o que se muestran en las superficies de los paramentos, prestándose escasa atención a las cuestiones funcionales. El presente estudio sobre la Botica del Monasterio del Escorial demuestra cómo una documentación gráfica de precisión permite localizar físicamente muchos datos e informaciones que proceden de fuentes diversas, y abordar sobre una base sólida un aspecto esencial de la tríada vitrubiana: la utilitas.
Seleção, avaliação de desempenho de fornecedores e características organizacionais: um olhar a partir da contabilidade gerencial interorganizacional
Authors: Bomfim Emanoel Truta do , Callado Antônio André Cunha
Published: March 2020

O objetivo desta pesquisa foi examinar a relação entre os critérios de escolha e de indicadores de desempenho utilizados na avaliação de fornecedores com as características organizacionais de supermercados, sob o olhar da contabilidade gerencial interorganizacional. Para tanto, realizou-se um estudo descritivo, sendo os dados coletados por meio da aplicação de um questionário a 22 pequenos supermercados localizados em algumas cidades paraibanas. Os principais resultados sugerem que: o nível de incerteza do setor influencia na adoção da estratégia de abastecimento baseadas no preço dos produtos e na utilização de medidas de desempenho de fornecedores pautadas no tempo de entrega, na lealdade e confidencialidade e no custo; a frequência de avaliação do desempenho dos fornecedores influencia no estabelecimento de parcerias de longo prazo e na adoção de medidas de desempenho de fornecedores baseadas na lealdade e confidencialidade e no custo.
Características da mensuração e gestão do custo alvo na prática: um estudo em instituição de ensino de pequeno porte
Authors: Carpim Besteiro Elen Nara , Borinelli Marcio Luiz , Ponara Russo Caio
Published: March 2020

Este estudo tem como objetivo verificar as principais características da aplicação da sistemática de mensuração e gestão do custo alvo em uma instituição de ensino de pequeno porte, sob a perspectiva de contribuir para o adequado gerenciamento de resultados. A partir de questionários aplicados às famílias dos alunos e de pesquisa documental junto aos relatórios econômico-financeiros, foi conduzida pesquisa descritiva, na forma de estudo de caso único e com abordagem qualitativa. Os resultados apontaram que a aplicação do custeio alvo no caso estudado pode impactar na eficácia da gestão do sistema de controle, especialmente, quanto à geração de informações gerenciais precisas a partir da análise dos atributos relacionados ao negócio. Adicionalmente, a aplicação desse artefato aponta a contribuição para o correto planejamento e direcionamento de recursos, visando uma gestão sustentável, pois é durante o planejamento que a maioria dos custos são estabelecidos e que correções podem ser realizadas.
Um estudo a respeito do estágio curricular supervisionado nos cursos de Ciências Contábeis no Brasil com foco na teoria experiencial de aprendizagem
Authors: Sousa Marco Aurélio Batista de , Miranda Gilberto José
Published: March 2020

Este estudo teve por objetivo investigar como as Instituições de Ensino Superior organizam e operacionalizam o estágio curricular supervisionado nos Cursos de Ciências Contábeis no Brasil à luz da Teoria Experiencial de Aprendizagem de David Kolb. Trata-se de um estudo descritivo, com abordagem quantitativa, tendo sido elaborado por meio de coleta documental nos Projetos Pedagógicos e/ou Regulamentos de Estágios de uma amostra de 210 instituições de ensino superior (IES) brasileiras. Como resultado, verificou-se que: 97% das instituições investigadas estabelecem o Estágio Supervisionado como uma atividade a ser desempenhada individualmente; a carga horária para a realização da atividade é bastante heterogênea; a maior parte das instituições estabelecem as responsabilidades dos alunos, mas não dos demais envolvidos (IES, professores, empresas cedentes e supervisores); o propósito central do Estágio Supervisionado evidenciado é expor o aluno a situações práticas, sendo possível visualizar os estágios do ciclo de aprendizagem experiencial de Kolb nas regulamentações da maioria das IES investigadas.
Occupational Therapy Interventions for Older Adults With Low Vision
Authors: Smallfield Stacy , Kaldenberg Jennifer
Published: March 2020

Evidence Connection articles provide clinical application of systematic reviews developed in conjunction with the American Occupational Therapy Association’s (AOTA’s) Evidence-Based Practice Project. Findings from the systematic review of occupational therapy for older adults with low vision were published in the January/February 2020 issue of the American Journal of Occupational Therapy (AJOT) and in AOTA’s Occupational Therapy Practice Guidelines for Older Adults With Low Vision, published in the March/April 2020 issue of AJOT. In this article, we describe a case report of an older adult with low vision who was referred to outpatient occupational therapy services because of a recent progression of her age-related macular degeneration that led to a decline in functional independence. Each article in the Evidence Connection series summarizes the evidence from the published reviews on a given topic and presents an application of the evidence to a related clinical case. These articles illustrate how the research evidence from the reviews can be used to inform and guide clinical decision making.
SISALv2: A comprehensive speleothem isotope database with multiple age-depth models
Authors: Comas-Bru Laia , Rehfeld Kira , Roesch Carla , Amirnezhad-Mozhdehi Sahar , Harrison Sandy P. , Atsawawaranunt Kamolphat , Ahmad Syed Masood , Ait Brahim Yassine , Baker Andy , Bosomworth Matthew , Breitenbach Sebastian F. M. , Burstyn Yuval , Columbu Andrea , Deininger Michael , Demény Attila , Dixon Bronwyn , Fohlmeister Jens , Hatvani István Gábor , Hu Jun , Kaushal Nikita , Kern Zoltán , Labuhn Inga , Lechleitner Franziska A. , Lorrey Andrew , Martrat Belen , Novello Valdir Felipe , Oster Jessica , Pérez-Mejías Carlos , Scholz Denis , Scroxton Nick , Sinha Nitesh , Ward Brittany Marie , Warken Sophie , Zhang Haiwei ,   the SISAL members
Published: March 2020

Abstract. Characterising the temporal uncertainty in palaeoclimate records is crucial for analysing past climate change, for correlating climate events between records, for assessing climate periodicities, identifying potential triggers, and to evaluate climate model simulations. The first global compilation of speleothem isotope records by the SISAL (Speleothem Isotope Synthesis and Analysis) Working Group showed that age-model uncertainties are not systematically reported in the published literature and these are only available for a limited number of records (ca. 15 %, n = 107/691). To improve the usefulness of the SISAL database, we have (i) improved the database’s spatio-temporal coverage and (ii) created new chronologies using seven different approaches for age-depth modelling. We have applied these alternative chronologies to the records from the first version of the SISAL database (SISALv1) and to new records compiled since the release of SISALv1. This paper documents the necessary changes in the structure of the SISAL database to accommodate the inclusion of the new age-models and their uncertainties as well as the expansion of the database to include new records and the quality-control measures applied. This paper also documents the age-depth model approaches used to calculate the new chronologies. The updated version of the SISAL database (SISALv2) contains isotopic data from 691 speleothem records from 294 cave sites and new age-depth models, including age-depth temporal uncertainties for 512 speleothems. SISALv2 is available at https://doi.org/10.17864/1947.242 (Comas-Bru et al., 2020).