bluuebunny/crossref_metadata_2025 huggingface dataset:
TECHNICAL ASPECTS OF LASER EN BLOC RESECTION OF THE BLADDER TUMOR FOR NON-MUSCLE-INVASIVE BLADDER CANCER
Authors: Kamalov A. A. , Sorokin N. I. , Dymov A. M. , Kislyakov D. A. , Kamalov D. M. , Dzitiev V. K. , Pshihachev A. M. , Strigunov A. A. , Afanasyevskaya E. V. , Tivtikyan A. S. , Nesterova O. Y.
Published: June 2020

Abstract: In recent decades bladder cancer has become one of the most topical problems of modern healthcare due to its widespread distribution. This makes it necessary to investigate new effective methods of surgical treatment.Objective: Assessment of the effectiveness of en bloc resection of the bladder with tumor by analyzing scientific publications on this matter.Materials and methods: We have analyzed current articles related to this topic on the databases Pubmed and Google Scholar. The search was performed using the keywords «Bladder Tumor», «En bloc resection of the bladder wall», «non-muscle-invasive bladder cancer».Results: Most studies confirm the advantages of laser en bloc resection over other methods in terms of such parameters as the frequency of recurrence, macrohematuria, and the quality of morphological material.Conclusions: Laser en bloc resection of a bladder tumor without invasion of the muscle layer is a safe and effective operation that has a number of advantages over classical transurethral resection, namely: no obturator syndrome, high-quality material for pathomorphological research, low recurrence rate.
THE FEATURES OF PRETERM PERIOD AND DELIVERY IN PPATIENTS WITH BENIGN OVARIAN NEOPLASMS
Authors: Kalashnik A. A. , Shcherbakova L. N. , Alexeenkova M. V. , Panina O. B.
Published: June 2020

Abstract: Nowadays medical society is facing increasing numbers of adnexal masses in women of reproductive age, and especially challenging for the diagnostic workup and management are such cases during the pregnancy. Our study has a primary focus on the specific features of the pregnancy and delivery in patients with benign ovarian neoplasms.Materials and methods: This is a retrospective study that included 88 pregnant patients with benign ovarian neoplasms that delivered in our facility during the period from 2014 to 2016. The patients were divided into two groups, the 1st group included 45 pregnant women with endometrioid ovarian cysts, the 2nd group consisted of 43 pregnant women with cystadenomas and ovarian teratomas. As a control group, we used cumulative statistical data from our facility and several related organizations, representing the general population.Results: It was observed, that the odds ratio of the threatened miscarriage and the threat of preterm delivery was significantly higher in patients with endometrioid ovarian cysts compared to the general population. However, the frequency of complications of the preterm period and delivery in patients with cystadenomas and ovarian teratomas showed no significant difference, compared to populational data. There were no significant differences in complications between patients with endometrioid ovarian cysts and cystadenomas / ovarian teratomas.Conclusion: Our research provides additional data on pregnancies with adnexal masses, which can help in the prevention of complications and choosing the modality of treatment in pregnant patients.
Impact of Planetary Mass Uncertainties on Exoplanet Atmospheric Retrievals
Authors: Changeat Q. , Keyte L. , Waldmann I. P. , Tinetti G.
Published: June 2020

In current models used to interpret exoplanet atmospheric observations, the planetary mass is treated as a prior and is measured/estimated independently with external methods, such as radial velocity or transit timing variation techniques. This approach is necessary as available spectroscopic data do not have sufficient wavelength coverage and/or signal-to-noise to infer the planetary mass. We examine here whether the planetary mass can be directly retrieved from transit spectra as observed by future space observatories, which will provide higher quality spectra. More in general, we quantify the impact of mass uncertainties on spectral retrieval analyses for a host of atmospheric scenarios. Our approach is both analytical and numerical: we first use simple approximations to extract analytically the influence of each atmospheric/planetary parameter to the wavelength-dependent transit depth. We then adopt a fully Bayesian retrieval model to quantify the propagation of the mass uncertainty onto other atmospheric parameters. We found that for clear-sky, gaseous atmospheres the posterior distributions are the same when the mass is known or retrieved. The retrieved mass is very accurate, with a precision of more than 10%, provided the wavelength coverage and signal-to-noise ratio are adequate. When opaque clouds are included in the simulations, the uncertainties in the retrieved mass increase, especially for high altitude clouds. However, atmospheric parameters such as the temperature and trace-gas abundances are unaffected by the knowledge of the mass. Secondary atmospheres, expected to be present in many super-Earths, are more challenging due to the higher degree of freedom for the atmospheric main component, which is unknown. For broad wavelength range and adequate signal-to-noise observations, the mass can still be retrieved accurately and precisely if clouds are not present, and so are all the other atmospheric/planetary parameters. When clouds are added, we find that the mass uncertainties may impact substantially the retrieval of the mean molecular weight: an independent characterization of the mass would therefore be helpful to capture/confirm the main atmospheric constituent.
Magnetorotational Explosion of a Massive Star Supported by Neutrino Heating in General Relativistic Three-dimensional Simulations
Authors: Kuroda Takami , Arcones Almudena , Takiwaki Tomoya , Kotake Kei
Published: June 2020

We present results of three-dimensional (3D), radiation-magnetohydrodynamics (MHD) simulations of core-collapse supernovae in full general relativity (GR) with spectral neutrino transport. In order to study the effects of the progenitor’s rotation and magnetic fields, we compute three models, where the precollapse rotation rate and magnetic fields are included parametrically to a 20 M
⊙ star. While we find no shock revival in our two nonmagnetized models during our simulation times (∼500 ms after bounce), the magnetorotational (MR) driven shock expansion immediately initiates after bounce in our rapidly rotating and strongly magnetized model. We show that the expansion of the MR-driven flows toward the polar directions is predominantly driven by the magnetic pressure, whereas the shock expansion toward the equatorial direction is supported by neutrino heating. Our detailed analysis indicates that the growth of the so-called kink instability may hinder the collimation of jets, resulting in the formation of broader outflows. Furthermore, we find a dipole emission of lepton number, only in the MR explosion model, whose asymmetry is consistent with the explosion morphology. Although it is similar to the lepton number emission self-sustained asymmetry (LESA), our analysis shows that the dipole emission occurs not from the proto–neutron star convection zone but from above the neutrino sphere, indicating that it is not associated with the LESA. We also report several unique neutrino signatures, which are significantly dependent on both the time and the viewing angle, if observed, possibly providing rich information regarding the onset of the MR-driven explosion.
Kinematic Structure of the Galactic Center S Cluster
Authors: Ali Basel , Paul Daria , Eckart Andreas , Parsa Marzieh , Zajacek Michal , Peißker Florian , Subroweit Matthias , Valencia-S. Monica , Thomkins Lauritz , Witzel Gunther
Published: June 2020

We present a detailed analysis of the kinematics of 112 stars that mostly comprise the high-velocity S cluster and orbit the supermassive black hole Sgr A* at the center of the Milky Way. For 39 of them, orbital elements are known; for the remainder, we know proper motions. The distribution of the inclinations and the proper motion flight directions deviate significantly from a uniform distribution, which one expects if the orientation of the orbits are random. Across the central arcseconds, the S-cluster stars are arranged in two almost edge-on disks that are located at a position angle approximately ±45° with respect to the Galactic plane. The angular momentum vectors for stars in each disk point in both directions, i.e., the stars in a given disk rotate in opposite ways. The poles of this structure are located only about 25° from the line of sight. This structure may be the result of a resonance process that started with the formation of the young B-dwarf stars in the cluster about 6 Myr ago. Alternatively, it indicated the presence of a disturber at a distance from the center comparable to the distance of the compact stellar association IRS 13.
A Fully Self-consistent Model for Solar Flares
Authors: Ruan Wenzhi , Xia Chun , Keppens Rony
Published: June 2020

The “standard solar flare model” collects all physical ingredients identified by multiwavelength observations of our Sun: magnetic reconnection, fast particle acceleration, and the resulting emission at various wavelengths, especially in soft to hard X-ray channels. Its cartoon representation is found throughout textbooks on solar and plasma astrophysics and guides interpretations of unresolved energetic flaring events on other stars, accretion disks, and jets. To date, a fully self-consistent model that reproduces the standard scenario in all its facets is lacking, since this requires the combination of a large-scale, multidimensional magnetohydrodynamic (MHD) plasma description with a realistic fast electron treatment. Here we demonstrate such a novel combination, where MHD combines with an analytic fast electron model, adjusted to handle time-evolving, reconnecting magnetic fields and particle trapping. This allows us to study (1) the role of fast electron deposition in the triggering of chromospheric evaporation flows, (2) the physical mechanisms that generate various hard X-ray sources at chromospheric footpoints or looptops, and (3) the relationship between soft X-ray and hard X-ray fluxes throughout the entire flare loop evolution. For the first time, this self-consistent solar flare model demonstrates the observationally suggested relationship between flux swept out by the hard X-ray footpoint regions and the actual reconnection rate at the X-point, which is a major unknown in flaring scenarios. We also demonstrate that a looptop hard X-ray source can result from fast electron trapping.
The Effect of Seafloor Weathering on Planetary Habitability
Authors: Chambers John
Published: June 2020

Conventionally, a habitable planet is one that can support liquid water on its surface. Habitability depends on temperature, which is set by insolation and the greenhouse effect, due mainly to CO2 and water vapor. The CO2 level is increased by volcanic outgassing and decreased by continental and seafloor weathering. Here, I examine the climate evolution of Earth-like planets using a globally averaged climate model that includes both weathering types. Climate is sensitive to the relative contributions of continental and seafloor weathering, even when the total weathering rate is fixed. Climate also depends strongly on the dependence of seafloor weathering on CO2 partial pressure. Both these factors are uncertain. Earth-like planets have two equilibrium climate states: (i) an ice-free state where outgassing is balanced by both weathering types, and (ii) an ice-covered state where outgassing is balanced by seafloor weathering alone. The second of these has not been explored in detail before. For some planets, neither state exists, and the climate cycles between ice-covered and ice-free states. For some other planets, both equilibria exist, and the climate depends on the initial conditions. Insolation increases over time due to stellar evolution, so a planet usually encounters the ice-covered equilibrium first. Such a planet will remain ice covered, even if the ice-free state appears subsequently, unless the climate receives a large perturbation. The ice-covered equilibrium state covers a large fraction of phase space for Earth-like planets. Many planets conventionally assigned to a star’s habitable zone may be rendered uninhabitable as a result.
Significance of Gravitational Nonlinearities on the Dynamics of Disk Galaxies
Authors: Deur Alexandre , Sargent Corey , Terzić Balša
Published: June 2020

The discrepancy between the visible mass in galaxies or galaxy clusters and that inferred from their dynamics is well known. The prevailing solution to this problem is dark matter. Here we show that a different approach, one that conforms to both the current standard model of particle physics and general relativity (GR), explains the recently observed tight correlation between the galactic baryonic mass and the measured accelerations in the galaxy. Using direct calculations based on GR’s Lagrangian and parameter-free galactic models, we show that the nonlinear effects of GR make baryonic matter alone sufficient to explain this observation. Our approach also shows that a specific acceleration scale dynamically emerges. It agrees well with the value of the MOND acceleration scale.
Large Population of ALMA Galaxies at z > 6 with Very High [O iii] 88 μm to [C ii] 158 μm Flux Ratios: Evidence of Extremely High Ionization Parameter or PDR Deficit?
Authors: Harikane Yuichi , Ouchi Masami , Inoue Akio K. , Matsuoka Yoshiki , Tamura Yoichi , Bakx Tom , Fujimoto Seiji , Moriwaki Kana , Ono Yoshiaki , Nagao Tohru , Tadaki Ken-ichi , Kojima Takashi , Shibuya Takatoshi , Egami Eiichi , Ferrara Andrea , Gallerani Simona , Hashimoto Takuya , Kohno Kotaro , Matsuda Yuichi , Matsuo Hiroshi , Pallottini Andrea , Sugahara Yuma , Vallini Livia
Published: June 2020

We present our new Atacama Large Millimeter/Submillimeter Array (ALMA) observations targeting [O iii]88 μm, [C ii]158 μm, [N ii]122 μm, and dust-continuum emission for three Lyman break galaxies at z = 6.0293–6.2037, identified in the Subaru/Hyper Suprime-Cam survey. We clearly detect [O iii] and [C ii] lines from all of the galaxies at 4.3–11.8σ levels, and identify multi-band dust-continuum emission in two of the three galaxies, allowing us to estimate infrared luminosities and dust temperatures simultaneously. In conjunction with previous ALMA observations for six galaxies at z > 6, we confirm that all the nine z = 6–9 galaxies have high [O iii]/[C ii] ratios of

, ∼10 times higher than z ∼ 0 galaxies. We also find a positive correlation between the [O iii]/[C ii] ratio and the Lyα equivalent width (EW) at the ∼90% significance level. We carefully investigate physical origins of the high [O iii]/[C ii] ratios at z = 6–9 using Cloudy, and find that high density of the interstellar medium, low C/O abundance ratio, and the cosmic microwave background attenuation are responsible to only a part of the z = 6–9 galaxies. Instead, the observed high [O iii]/[C ii] ratios are explained by 10–100 times higher ionization parameters or low photodissociation region (PDR) covering fractions of 0%–10%, both of which are consistent with our [N ii] observations. The latter scenario can be reproduced with a density-bounded nebula with PDR deficit, which would enhance the Lyα, Lyman continuum, and

ionizing photons escape from galaxies, consistent with the [O iii]/[C ii]-Lyα EW correlation we find.
Particle Acceleration in Kink-unstable Jets
Authors: Davelaar Jordy , Philippov Alexander A. , Bromberg Omer , Singh Chandra B.
Published: June 2020

Magnetized jets in gamma-ray bursts and active galactic nuclei are thought to be efficient accelerators of particles; however, the process responsible for the acceleration is still a matter of active debate. In this work, we study the kink instability in non-rotating force-free jets using first-principle particle-in-cell simulations. We obtain similar overall evolution of the instability as found in magnetohydrodynamics simulations. The instability first generates large-scale current sheets, which at later times break up into small-scale turbulence. Reconnection in these sheets proceeds in the strong guide field regime, which results in a formation of steep power laws in the particle spectra. Later evolution shows heating of the plasma, which is driven by small-amplitude turbulence induced by the kink instability. These two processes energize particles due to a combination of ideal and non-ideal electric fields.
Shouts and Murmurs: Combining Individual Gravitational-wave Sources with the Stochastic Background to Measure the History of Binary Black Hole Mergers
Authors: Callister Tom , Fishbach Maya , Holz Daniel E. , Farr Will M.
Published: June 2020

One of the goals of gravitational-wave astronomy is to quantify the evolution of the compact binary merger rate with redshift. The redshift distribution of black hole mergers would offer considerable information about their evolutionary history, including their progenitor formation rate, the dependence of black hole formation on stellar metallicity, and the time delay distribution between formation and merger. Efforts to measure the binary redshift distribution are currently limited, however, by the detection range of existing instruments, which can individually resolve compact binary merger events only out to

. We present a novel strategy with which to measure the redshift distribution of binary black hole mergers well beyond the detection range of current instruments. By synthesizing direct detections of individually resolved mergers with indirect searches for the stochastic gravitational-wave background due to unresolved distant sources, we can glean information about the peak redshift, z

p
, at which the binary black hole merger rate attains its maximum, even when this redshift is beyond the detection horizon. Using data from Advanced LIGO and Virgo’s first and second observing runs, we employ this strategy to place joint constraints on z

p
and the slope α with which the binary merger rate increases at low redshifts, ruling out merger rates that grow faster than

and peak beyond

. Looking ahead, we project that approximately one year of observation with design-sensitivity Advanced LIGO will further break remaining degeneracies, enabling a direct measurement of the peak redshift of the binary black hole merger history.
Signatures of Helium Continuum in Cool Flare Loops Observed by SDO/AIA
Authors: Heinzel Petr , Schwartz Pavol , Lörinčík Juraj , Koza Július , Jejčič Sonja , Kuridze David
Published: June 2020

We present an analysis of off-limb cool flare loops observed by the Solar Dynamics Observatory (SDO)/Atmospheric Imaging Assembly (AIA) during the gradual phase of SOL2017-09-10T16:06 X8.2-class flare. In the extreme-ultraviolet (EUV) channels starting from the 335 Å one, cool loops appear as dark structures against the bright loop arcade. These dark structures were precisely coaligned (spatially and temporally) with loops observed by Swedish Solar Telescope (SST) in emission lines of hydrogen and ionized calcium. A recently published semi-empirical model of cool loops based on SST observations serves to predict the level of hydrogen and helium recombination continua. The continua were synthesized using an approximate non-LTE (i.e., departures from local thermodynamic equilibrium) approach and theoretical spectra were then transformed to AIA signals. Comparison with signals detected inside the dark loops shows that only in AIA 211 Å channel the computed level of recombination continua is consistent with observations for some models, while in all other channels that are more distant from the continua edges the synthetic continuum is far too low. In analogy with on-disk observations of flares we interpret the surplus emission as due to numerous EUV lines emitted from hot but faint loops in front of the cool ones. Finally we briefly comment on failure of the standard absorption model when used for analysis of the dark-loop brightness.
Se remettre debout : marcher pour se sentir vivant
Authors: Le Breton David
Published: June 2020

Dans les années 1950 en France, on marchait en moyenne sept kilomètres à pied par jour. Aujourd’hui, à peine trois cents mètres. La sédentarité est un souci majeur de la santé publique. Marcher, c’est reprendre corps dans son existence, retrouver une jouissance du temps, renouveler sa curiosité, se déconnecter pour se sentir vivant. C’est certes une pratique de santé, mais surtout une jouissance du monde.
Les inégalités sociales de santé dès la petite enfance : le rôle du sport
Authors: Nicaise Sarah , Mennesson Christine , Bertrand Julien
Published: June 2020

S’appuyant sur une enquête menée auprès de 35 enfants âgé.e.s de 5 ou 6 ans et provenant de milieux sociaux variés, cet article s’intéresse aux relations entre pratiques sportives enfantines et inégalités sociales de santé. Malgré une forte diffusion des activités sportives pendant l’enfance, celles-ci restent toutefois inégalitaires et socialement distribuées. Selon la position sociale des parents, qui oriente des conduites éducatives, des représentations et des stratégies spécifiques, les enfants connaissent des expériences sportives différenciées qui participent à la formation de dispositions inégalement propices à la préservation d’un bon état de santé.
Faire de la recherche à propos/sur/avec/pour la Fédération française du sport adapté ?
Authors: Caby Isabelle , Marcellini Anne
Published: June 2020

La Fédération française du sport adapté a officiellement mis en place en 2001 une commission nationale « Études et recherches » qui a été dirigée et animée par son vice-président, Roy Compte, jusqu’à son décès en 2017. La mission de cette commission est de dynamiser, soutenir et réaliser des recherches scientifiques sur les activités de la fédération. Pour cela, Roy Compte a su regrouper, pendant plus de quinze ans, des enseignants-chercheurs s’intéressant aux relations entre déficience intellectuelle et/ou troubles psychiques et pratique sportive. En présentant deux actions concrètes récentes menées au sein de cette commission, les auteurs dégagent les caractéristiques originales de ce dispositif de recherche inédit, élaboré au sein de la Fédération française du sport adapté.
Le placement sous surveillance électronique : quels impacts pour la santé et les pratiques sportives des condamnés ?
Authors: Dambuyant Mathias
Published: June 2020

Cet article examine la double influence d’une peine sur les pratiques sportives : en termes de contraintes autant que d’opportunités. Pour les personnes condamnées au placement sous surveillance électronique, le bracelet peut apparaître autant comme un frein à la pratique sportive (à cause du stigmate d’apparaître avec un bracelet à la cheville) que comme une opportunité (sortir plus longtemps de son enfermement à domicile). Il en découle pour ces porteurs des ressentis du corps diminué ou augmenté, favorisant l’image de soi ou la santé de soi.
Y Arrivarem Ariège Pyrénées
Authors: Safon Jacques
Published: June 2020

Il y a trente ans, des bénévoles, amoureux de la montagne, se sont mis au défi de permettre aux personnes handicapées de connaître, en dehors du concept d’handisport, les joies de la découverte de la haute montagne. Cette saga s’est poursuivie par des randonnées, des voyages en péniche… et l’aventure continue toujours.
Le corps vieillissant, une ressource malgré tout. Réflexion sur la question de l’APA en institution
Authors: Salandini Nicolas
Published: June 2020

Cet article offre une approche physique du corps vieillissant dans sa dimension holistique : ses aspects dynamiques, potentiels, préventifs. Il décrit les aspects théoriques et réglementaires et l’émergence de l’activité physique adaptée dans un établissement pour personnes âgées dépendantes.
« Vous leur fîtes seigneur, en les croquant, beaucoup d’honneur »
Authors: Boudou Françoise
Published: June 2020

Deux textes réunis dans un même article par les affects que le travail dans un cadre thérapeutique malléable a suscités en moi. Il y est question de la paroi étanche qui semble assourdir l’écoute entre des intervenants institutionnels face aux personnes en difficulté sociale. Deux langues, semble-t-il. Deux mondes qui ne semblent plus pouvoir communiquer, qui s’ignorent. Confrontation avec une souffrance impensable qui en devient inaudible. Ces écrits témoignent de ma colère et de l’urgence de penser l’humain. Inspirée par la psychanalyse groupale et familiale, je centre mon écoute sur ce qui se répète de l’histoire du sujet dans sa rencontre avec ce siècle.
Des adjectifs tough dans des langues sans construction Tough ? Le cas du russe
Authors: Paykin Katia , Van Peteghem Marleen
Published: June 2020

En russe, les adjectifs signifiant ‹facile›, ‹difficile›, accompagnés d’un infinitif, ne présentent pas le phénomène de Object-to-Subject Raising (Rosenbaum 1967) puisque l’objet monté garde le cas qui lui est assigné par l’infinitif. La montée consiste donc en un simple changement de l’ordre des mots. Néanmoins, malgré l’absence d’une construction Tough sur le modèle de l’anglais, les adjectifs russes trudnyj ‹difficile›, legkij ‹facile›, etc. présentent des particularités par rapport aux autres adjectifs dans la mesure où ils sont les seuls à pouvoir entrer dans trois autres constructions : le passif réfléchi, le participe présent passif et une construction prépositionnelle en dlja ‹pour› + Ndéverbal. L’aptitude de ces adjectifs à entrer dans ces trois constructions confirme leur propension aux phénomènes de montée, due à leur affinité sémantique avec la modalité.
La construction Tough en arabe standard et en bulgare : une sémantique commune
Authors: Tayalati Fayssal , Mostrov Vassil
Published: June 2020

Dans cet article sont comparées les constructions Tough de deux langues typologiquement très éloignées, l’arabe standard et le bulgare. Il sera montré que, malgré les différences morphosyntaxiques, ces constructions reposent sur le même mécanisme sémantique de double prédication que les grammairiens arabes appellent le ‹mode d’attribution indirect›. Les paraphrases par des structures possessives dans les deux langues permettent, en outre, de reconnaître à l’élément déverbal le statut de dimension  – une sorte de partie abstraite très particulière (Van de Velde 2020 ce volume). Enfin, les auteurs posent la question de la ‹source› de la qualité dénotée par l’adjectif tough , en signalant quelques différences entre les deux langues au niveau des adjectifs modaux.
Asymptotic behaviour of a neural field lattice model with delays
Authors: Wang Xiaoli , Kloeden Peter , Yang Meihua
Published: June 2020

The asymptotic behaviour of an autonomous neural field lattice system with delays is investigated. It is based on the Amari model, but with the Heaviside function in the interaction term replaced by a sigmoidal function. First, the lattice system is reformulated as an infinite dimensional ordinary delay differential equation on weighted sequence state space $ \ell_\rho^2 $ under some appropriate assumptions. Then the global existence and uniqueness of its solution and its formulation as a semi-dynamical system on a suitable function space are established. Finally, the asymptotic behaviour of solution of the system is investigated, in particular, the existence of a global attractor is obtained.
Discovering Trends of Mobile Learning Research Using Topic Modelling Approach
Authors: Hamzah Almed , Hidayatullah Ahmad Fathan , Persada Andhika Giri
Published: June 2020

This paper reports a map of identified topics from mobile learning research. Mobile learning is an emerging paradigm in an educational context as its adoption in an educational institution is growing rapidly. The students are already using and familiar with it.  The publications from the last ten years were examined. Two approaches were employed to identify themes, i.e. word cloud and Latent Dirichlet Allocation. The result shows that mobile learning research is shifting from the development into optimization paradigm. This research is beneficial for mobile learning literature to inform the researcher and practitioner in the mobile learning area in terms of research topic trend and therefore consider it as a basis for designing mobile learning system in the future.
Mobile Application System Supported BUC Students Services and Learning
Authors: ALFarsi Ghaliya Muslem , Jabbar Jasiya , M Tawafak Ragad , Iqbal Sohail , Alsidiri Abir , Alsinani Maryam , Bte Sulaiman Hidayah
Published: June 2020

Smartphones and applications are one of the most used things in learning and management systems. They make everyone connected with society, and those who feel sorry for it, especially college students are always looking for things that benefit them at a university. In this research, there is a need to apply a new application for student education service with an easy way of managing data and generate progression on reports feedback in his or her university life. We conducted a survey with the students of Al Buraimi University College and we reached a positive result that helps in the work. Smartphones have become pervasive and sales of all categories have many functions, in search (application of mobile-based devices in education design) to talk about applications in smart devices that serve education and take their information for management purpose and ease of use and follow them in any way.
Attitudes Toward Smartphone Characteristics: What Do Users Pay For?
Authors: Jamalova Maral , Constantinovits Milán György
Published: June 2020

Abstract—This paper examines attitudes towards smartphone characteristics (features, functions and relative advantage indicators) from the users’ perspective. A questionnaire survey was conducted among smartphone users (n=486) from different countries, however, most of the respondents were Azerbaijanis or Hungarians. The results of the survey were analyzed using Principal Component Analysis which enables to group the most important variables based on their correlations. Six components were extracted and 65% of the total variance was explained by the components. Surprisingly, Personal Digital Assistant tasks and Technical Features seem to be more important for smartphone users than Relative Advantage indicators (i.e. including the price of the handset). The main purpose of the mobile/smartphones – being in touch – explains less than seven percent of the total variance. Afterward, the respondents were clustered in 5 groups according to Rogers’ [2003. Diffusion of innovations (5th ed.). New York, NY: Free Press] adopter categories, using the results of PCA for K-means cluster analysis. Based on the output of cluster analysis and final cluster centers, the adopter categories were defined. The results illustrate that the number of innovators and early adopters is significantly high in comparison with the original numbers offered by Rogers.
A Survey of State-of-the-Art Energy Efficiency Routing Protocols for MANET
Authors: Vu Quy Khanh , Hoai Nam Vi , Manh Linh Dao
Published: June 2020

In recent years, the Mobile Ad Hoc Network (MANET) has a vital role in many fields such as healthcare, military, rescue and smart city. Because of its mobility and ad hoc, each mobile network node acts as a router with limited battery energy. The out of energy network node not only affects its own ability to receive/receive packets but also affects the overall performance of the entire network. Therefore, designing an energy-efficient routing protocol will help to optimize the efficiency of MANET. Many routing protocols have been proposing to solve this problem. In this paper, we conducted a survey of the proposed energy-saving routing protocols in the last decade for MANET. Based on the survey results, we propose open research directions. We hope that this work will make a strong motivation in the field of energy-efficient routing research for MANET. The survey results are also a vital basis to serve the in-depth researches in the routing field for MANET of our research team.
Moving From Vertical to Horizontal
Authors: Schilling Denise Lynn , Sharp Kelley , Waldman Reid
Published: June 2020

Unconscious bias impacts the ability to engage with interprofessional education activities. This bias comes in many forms and occurs for a variety of reasons. This chapter reviews the types of bias that frequently plague IPE and reviews common theories explaining this bias. Theories discussed in this chapter include social identity theory, realistic conflict theory, and Allport's contact theory. The purpose of this chapter is to assist readers with improving IPE engagement and help promote healthier communication among members of the healthcare team.
Interprofessional Eye Care
Authors: Waldman Corey W. , Hoppe Elizabeth , Chung Ida , Cameron D. Joshua , Yadav Naveen K. , Pham Christine T. , Bowlin Stephanie
Published: June 2020

Doctors of Optometry and optometric students, interns, and residents are valuable members of the interprofessional team. Including both primary eye care and more specialized optometric care that can encompass elements of secondary and tertiary care in the collaborative care of patients ensures a holistic, whole-body approach to wellness and supports patients' quality of life. Doctors of Optometry play a vital role in ensuring optimal health throughout the lifespan, and in particular, for people with chronic conditions and complex health concerns. The authors explore examples of how optometrists participate in the healthcare team and describe how optometrists can make an impact for patients across the life span.
Re-Envisioning Formal and Informal Family Businesses in Nigeria
Authors: Raimi Lukman
Published: June 2020

This chapter discusses the evolution, opportunities, succession model, and sustainability challenges of formal and informal family businesses in Nigeria. Using qualitative research method, while relying on content analysed secondary data, the chapter found that the family businesses that evolved in Nigeria laid the foundation for socio-economic development, and they contributed immensely to employment generation, stimulation of indigenous entrepreneurship, mobilization of idle savings, and growth of gross domestic product. Family businesses in Nigeria prefer relay succession planning for transferring control to family members. The major sustainability challenges include poor succession planning, harsh macro-economic environment, conflict of interest, emotional family problems, parochial family vision, absence of mentoring, competition from multinational corporation, poor access to funding, inadequate entrepreneurial knowledge, weak financial management, bad governance, and a host of others. The chapter concludes with research implications, limitations, and suggestions for further research.
Automating the Assessment of Algorithms and Programming Concepts in App Inventor Projects in Middle School
Authors: Alves Nathalia da Cruz , Gresse von Wangenheim Christiane , Hauck Jean C. R. , Borgatto Adriano F.
Published: June 2020

As computer science education makes its way into schools, diverse initiatives worldwide promote computer science education in K-12, often focusing on teaching algorithms and programming with block-based programming languages such as Scratch or App Inventor. However, alternatives to assess the learning of computer science concepts on this educational stage are still scarce. This chapter presents an automated rubric for assessing algorithms and programming concepts of App Inventor projects at middle school level. The assessment is based on a rubric proposed in alignment with the K-12 Computer Science Framework with satisfactory reliability and validity. The rubric has been automated through a web-based system that allows assessing App Inventor projects through static code analysis. As a result, it can support computer science education in practice providing feedback to students and teachers.
Assessing Algorithmic Thinking Skills in Early Childhood Education
Authors: Kanaki Kalliopi , Kalogiannakis Michail , Stamovlasis Dimitrios
Published: June 2020

This chapter presents part of a wider project aimed at developing computational thinking assessment instruments for first and second grade primary school students. The applicability of the specific proposed tool, which concerns merely the algorithmic thinking (AT), was tested within the Environmental Study course (ESc). The main pillar of the work is the computational environment PhysGramming. The assessment of AT was based on mental tasks involving puzzles which require AT abilities. The AT test comprised of four puzzles with 4, 6, 9, and 12 pieces respectively, and the puzzle-solving performance was measured at the nominal level (success/failure). Latent class analysis (LCA), a robust multivariate method for categorical data, was implemented, which distinguished two clusters/latent classes corresponding to two distinct levels of AT. Moreover, LCA with covariates, such as gender, grade, achievement in ESc, and the use of plan revealed the association of the above variables with the AT skill-levels. Finally, the results and their implications for theory and practice are discussed.
Folk Culture and Enriched Digital Teaching
Authors: Kapaniaris Alexandros G.
Published: June 2020

The ongoing developments in the field of information technology and, in particular, information and communication technologies (ICT) combined with the new digital culture that is rapidly emerging on the internet create a new perspective in the teaching of popular culture in primary education. More specifically, the teaching of popular culture can be greatly enhanced by learning experiences based on digital learning objects. Moreover, with the use of IT tools and enriched teaching can enhance the relationship between local folklore research and research work in primary education in the context of flexible zone or cultural programs (school activities). The internet at large and online technologies, Web 2.0, can transfuse special dynamic entities to popular culture evidence.
Image Features Based Intelligent Apple Disease Prediction System
Authors: Jan Mahvish , Ahmad Hazik
Published: June 2020

A pattern classifier (PC) is used to solve a variety of non-separable and complex computing problems. One of the key problems is to efficiently predict a type of disease in a typical fruit tree. The timely and accurately predicted disease in an apple tree may help a farmer to take appropriate preventive measures in advance. In this article, an apple disease diagnosis system is developed to predict the apple scab and leaf/spot blight diseases. In this article, low level and shape-based features are used for the development of an intelligent apple disease prediction system. First, the key image features like entropy, energy, inverse difference moment (IDM), mean, standard deviation (SD), perimeter, etc., are extracted from the apple leaf images. The model for the proposed system is trained by using multi-layer perceptron (MLP) pattern classifier and eleven apple leaves image features. The Gradient descent back-propagation algorithm is used for building the intelligent system to carry out the pattern classification. The proposed system is tested using some random samples and exhibits excellent diagnosis accuracy of 99.1%. The sensitivity of the proposed prediction model is 98.1% and specificity of ~99.9%.
Ranking with Genetics
Authors: Master Lawrence
Published: June 2020

There are many applications for ranking, including page searching, question answering, recommender systems, sentiment analysis, and collaborative filtering, to name a few. In the past several years, machine learning and information retrieval techniques have been used to develop ranking algorithms and several list wise approaches to learning to rank have been developed. We propose a new method, which we call GeneticListMLE++ and GeneticListNet++, which build on the original ListMLE and ListNet algorithms. Our method substantially improves on the original ListMLE and ListNet ranking approaches by incorporating genetic optimization of hyperparameters, a nonlinear neural network ranking model, and a regularization technique.
Reliable Composition of MAPE-K Loops in Self-Adaptive Software Systems
Authors: Ouareth Selma , Boulehouache Soufiane , Smaine Mazouzi
Published: June 2020

Self-adaptive systems (SASs) are controlled by autonomic manager (AM). This ensures the QoS of such complex systems within highly dynamic and unpredictable contexts. However, the massive integration of the adaptation abilities increased drastically the complexity of the AMs. To decrease the complexity and ensure correctness adaptation, scholars propose a subdivision into multi-autonomic entities (AEs) as a design approach. In such a design approach, SASs are controlled through multiple interacting AMs implementing each the well-known MAPE-K Loop. In this article, the writers propose a refinement pattern of interacting multiple MAPE-K Loops to achieve global adaptation without conflict. The authors contribute with a notation to describe the interaction of multiple MAPE-K Control Loops. To ensure the coordinated multi-attributes control, the interaction of the AEs is achieved through the knowledge base of the MAPE-K Loops. To validate the proposed pattern, a case study in the field of Electric Vehicle is presented.
FATORES QUE CONTRIBUEM PARA O CONSUMO DE PLATAFORMAS DE ECONOMIA DO COMPARTILHAMENTO: UM ESTUDO COM JOVENS UNIVERSITÁRIOS
Authors: Luciana Alves Rodas Vera  , De Sevilha Gosling Marlusa
Published: June 2020

A economia compartilhada é um tema recente da sociedade contemporânea, em que tem se observado um crescimento de organizações com este perfil e a atenção de investidores às empresas que surgem nesse segmento. A economia compartilhada pode ser considerada uma atividade de peer-to-peer com base na obtenção, concessão ou compartilhamento de acesso a bens e serviços, coordenada através de serviços comunitários online. Plataformas de diversos segmentos como Uber (transporte), Airbnb e CouchSurfing (Turismo e Hospitalidade), Zazcar e Zipcar (compartilhamento de carros), Coursera e Cinese (educação) são alguns dos exemplos que têm surgido nesse sentido. O objetivo do presente artigo é investigar quais são os fatores que contribuem para propensão de consumidores para participar de plataformas de economia compartilhada. Para isso, realizou-se um estudo qualitativo, de caráter exploratório, com grupos de foco, empregando-se a análise de conteúdo como método de análise. Como resultado, concluiu-se que a economia de custos, a influência social e a confiança, e a idade e o estágio no ciclo de vida são os fatores que mais contribuem para o interesse em utilizar as plataformas de economia compartilhada, na visão dos participantes dos grupos de foco.
GASTOS PÚBLICOS MUNICIPAIS BRASILEIROS: UMA REVISÃO SISTEMÁTICA
Authors: Soares Jean Robert , Raupp Fabiano Maury
Published: June 2020

O artigo apresenta os resultados do estudo que teve por objetivo levantar sistematicamente a produção acadêmica publicada em periódicos sobre gastos públicos municipais, mostrando um panorama a respeito de seus principais enfoques teóricos e metodológicos. A pesquisa é exploratória, com uma abordagem predominantemente qualitativa, conduzida por meio de uma revisão sistemática de literatura. Como resultados, o baixo número relativo de pesquisas com abordagens qualitativas e mistas indica uma possibilidade de estudos futuros que utilizem essas abordagens para compreender melhor os gastos públicos, para além da descrição de seus resultados. Um amplo foco é dado às classificações funcionais de gastos de educação e saúde e uma das palavras direcionadora de uma parte considerável dos estudos é eficiência, principalmente relacionada aos gastos. Outro resultado expressivo é que do número total de publicações, 57,  contam com dados secundários e análise de conteúdo como pelo menos uma das técnicas de coleta e análise de dados, respectivamente, o que indica outra oportunidade para pesquisas futuras.
Editorial
Authors: Cassandre Marcio Pascoal , Silva de Oliveira Josiane
Published: June 2020

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Experimental Investigation on Mechanical Properties of Wheat Husk Pulp Rein Forced Epoxy Composites
Authors: Singh Kanwal Jit , Kumar Rohit , Ramratan
Published: June 2020

The wheat husk pulp epoxy resin composites were prepared by compression Molding Method and their physical and Mechanical Properties were studied by universal testing Machine. The composites were tested by tensile strength testing and impact strength tester. The content of Wheat husk pulp is varied (35%, 45%, 55%) weight percentage whereas the epoxy resin is varied (50%, 40%, 30%) percentage is kept constant 15% in hardener. Composites have been fabricated using hand layup technique using a suitable mold developed in industry. All the sample have been tested in Universal testing machine as per ASTM standard for tensile strength and impact strength it is observed that composite with 35% wheat husk pulp is having highest tensile strength of 4mm (4.29MPa) and 8mm (6.31Mpa). The impact strength of Composite with 35% wheat husk pulp was highest than 35%to 45% wheat husk pulp.
Prevention of sports injuries in Sri Lanka: what do we know about injuries in our athletes?
Authors: Gamage Prasanna J. , Kountouris Alex , Finch Caroline F. , Fortington Lauren V.
Published: June 2020

In terms of safeguarding the health and well-being of athletes in Sri Lanka, a primary focus has always been toward the treatment of injuries after they have occurred and promoting rehabilitation back into sport. There has been little attention towards the primary prevention of injuries in Sri Lankan sports. As a developing sporting nation, the benefits of injury prevention are immense: from a public health and financial perspective, through to individual benefits for athletes’ physical, psychological and social health. Understanding the reasons behind the lack of motive towards sports injury prevention in the country, and challenges in developing and implementing injury prevention measures in the field is useful so that these reasons can be addressed and overcome. Based on recent experience in conducting injury prevention research among Sri Lankan junior cricketers, this article discusses injury prevention principles in sport and provides directions for future sport injury prevention research in Sri Lanka.
Kick start training during the COVID-19 pandemic - Challenges of the sporting community
Authors: Ranasinghe Chathuranga , Jayawardena Ranil , Palihawadana Venura
Published: June 2020

The COVID-19 pandemic has rapidly spread across the world with increasing morbidity and mortality, leading to implementation of strict preventive measures. Athletes and the sporting community are currently confined to homes, and sporting events are being postponed with times of uncertainty, where physical, technical, and psychological damage is inevitable. The clinical and immunological behavior of the SARS-CoV-2 virus infection is still being analyzed. Exercise in moderation has positive effects on human immunity and wellbeing. Athletes need to be guided to maintain physical, psychological and nutritional conditioning using available knowledge and opportunities. Practice of national health recommendations when training in the home environment and adapting to the ‘new normal’ environment will be a challenge. Scientific sporting bodies around the world have recommended well planned stepwise structured processes for the resumption of normal training for the safety of the athletes and the wider community. It is recommended, whenever possible that guidance and strategies are developed using the best available scientific evidence.