bluuebunny/crossref_metadata_2025 huggingface dataset:
KONSEP DAN IMPLIKASI MAKNA MENGAJAR DALAM PERPEKTIF DOSEN
Authors: Abu Amar
Published: October 2020

This study attemps to observe the meaning of instruction according to the lectures at STIT Al-Fattah - Lamongan. Using qualitative approach, this case study presents a natural and objective illustration of the problem. The data accurately and carefully analyzed based on inductive – qualitative analysis. The analysis come up with conclution that: the meaning of instruction according to the perception of the lectures at STIT Al-Fattah - Lamongan is the activity interconnected with transfer of knowledge, transfer of value, and transfer of skill. This activity has competention as a purpose that will be given to the students appropriate to the subjects that lectures teach them in the form ability to think, ability to have a certain attitude, and ability to act. With the abilities we expect the students can solve the problem that they face in the sociaty. The implication of the perception about the instruction in the instructional activity of  the lectures can be seen at follows: in the  instructional activity the lectures begin with making syllabus of the subject then followed  by contruct the course outline that have contents; instructional objective, time line, instructional strategy, and the evaluation. In the instructional activity the lecture must play as a motivator, mediator, fasilitator, and dinamisator to the students in order they have a high motivation in study.
Exoplanet Sciences with Nulling Interferometers and a Single-mode Fiber-fed Spectrograph
Authors: Wang 王 Ji 吉 , Jurgenson Colby
Published: October 2020

Understanding the atmospheres of exoplanets is a milestone to decipher their formation history and potential habitability. High-contrast imaging and spectroscopy of exoplanets is the major pathway toward the goal. Direct imaging of an exoplanet requires high spatial resolution. Interferometry has proven to be an effective way of improving spatial resolution. However, means of combining interferometry, high-contrast imaging, and high-resolution spectroscopy have been rarely explored. To fill in the gap, we present the dual-aperture fiber nuller (FN) for current-generation 8–10 m telescopes, which provides the necessary spatial and spectral resolution to (1) conduct follow-up spectroscopy of known exoplanets and (2) detect planets in debris-disk systems. The concept of feeding an FN to a high-resolution spectrograph can also be used for future space and ground-based missions. We present a case study of using the dual-aperture FN to search for biosignatures in rocky planets around M stars for a future space interferometry mission. Moreover, we discuss how an FN can be equipped on future extremely large telescopes by using the Giant Magellan Telescope as an example.
Lyapunov and Clearing Timescales in Planetary Chaotic Zones
Authors: Shevchenko Ivan I.
Published: October 2020

Debris disks in planetary systems are known to possess gaps “opened” by planets in their close-to-coorbital neighborhoods; the gaps are free from low-mass material such as planetesimals. We consider the escape process of the initially zero-eccentric particles from the gap zone in a scenario consisting of two basic consequent stages: (1) the particle orbit's eccentricity is inflated, while its specific energy is relatively constant, and (2) the particle orbit's semimajor axis is inflated, while its specific angular momentum is relatively constant. During the first stage, the chaotic transport (diffusion) proceeds along the “staircase” of (p + 1):p (with integer p  ≫  1) overlapping particle–planet resonances, and during the second stage, it proceeds along the p:1 particle–planet resonance staircase. A specialized two-dimensional area-preserving map (a “tokamap” version) is derived to describe the first stage, while a multiharmonic Kepler map theory is used to describe the second stage. We derive the μ (mass parameter) scaling for the clearing timescale in the planetary chaotic zone. At small μ, it turns out to be inverse-quadratic in μ. The μ scaling for the Lyapunov timescale inside the gap is also derived. The derived scalings are in qualitative agreement with available numerical-experimental data.
Mitigating Shear-dependent Object Detection Biases with Metacalibration
Authors: Sheldon Erin S. , Becker Matthew R. , MacCrann Niall , Jarvis Michael
Published: October 2020

Metacalibration is a new technique for measuring weak gravitational lensing shear that is unbiased for isolated galaxy images. In this work we test metacalibration with overlapping, or “blended” galaxy images. Using standard metacalibration, we find a few percent shear measurement bias for galaxy densities relevant for current surveys, and that this bias increases with increasing galaxy number density. We show that this bias is not due to blending itself, but rather to shear-dependent object detection. If object detection is shear-independent, no deblending of images is needed, in principle. We demonstrate that detection biases are accurately removed when including object detection in the metacalibration process, a technique we call metadetection. This process involves applying an artificial shear to images of small regions of sky and performing detection on the sheared images, as well as measurements that are used to calculate a shear response. We demonstrate that the method can accurately recover weak shear signals even in highly blended scenes. In the metacalibration process, the space between objects is sheared coherently, which does not perfectly match the real universe in which some, but not all, galaxy images are sheared coherently. We find that even for the worst case scenario, in which the space between objects is completely unsheared, the resulting shear bias is at most a few tenths of a percent for future surveys. We discuss additional technical challenges that must be met in order to implement metadetection for real surveys.
The Submillimeter Active Region Excess Brightness Temperature during Solar Cycles 23 and 24
Authors: Giménez de Castro C. Guillermo , Pereira André L. G. , Valle Silva J. Fernando , Selhorst Caius L. , Mandrini Cristina H. , Cristiani Germán D. , Raulin Jean-Pierre , Valio Adriana
Published: October 2020

We report the temporal evolution of the excess brightness temperature ΔT
b above solar active regions (ARs) observed with the Solar Submillimeter Telescope (SST) at 212 (λ = 1.4 mm) and 405 GHz (λ = 0.7 mm) during Cycles 23 and 24. Comparison with the sunspot number (SSN) yields a Pearson’s correlation coefficient R = 0.88 and 0.74 for 212 and 405 GHz, respectively. Moreover, when only Cycle 24 is taken into account the correlation coefficients go to 0.93 and 0.81 for each frequency. We derive the spectral index α between SST frequencies and find a slight anticorrelation with the SSN (R = −0.25); however, since the amplitude of the variation is lower than the standard deviation we cannot draw a definite conclusion. Indeed, α remains almost constant within the uncertainties with a median value of ≈0 characteristic of an optically thick thermal source. Since the origin of the AR submillimeter radiation is thermal continuum produced at chromospheric heights, the strong correlation between ΔT
b and the magnetic cycle evolution could be related to the available free magnetic energy to be released in reconnection events.
The Dynamics, Destruction, and Survival of Supernova-formed Dust Grains
Authors: Slavin Jonathan D. , Dwek Eli , Mac Low Mordecai-Mark , Hill Alex S.
Published: October 2020

Observations have demonstrated that supernovae efficiently produce dust. This is consistent with the hypothesis that supernovae and asymptotic giant branch stars are the primary producers of dust in the universe. However, there has been a longstanding question of how much of the dust detected in the interiors of young supernova remnants can escape into the interstellar medium. We present new hydrodynamical calculations of the evolution of dust grains that were formed in dense ejecta clumps within a Cas A–like remnant. We follow the dynamics of the grains as they decouple from the gas after their clump is hit by the reverse shock. They are subsequently subject to destruction by thermal and kinetic sputtering as they traverse the remnant. Grains that are large enough (∼0.25 μm for silicates and ∼0.1 μm for carbonaceous grains) escape into the interstellar medium while smaller grains get trapped and destroyed. However, grains that reach the interstellar medium still have high velocities, and are subject to further destruction as they are slowed down. We find that for initial grain size distributions that include large (∼0.25–0.5 μm) grains, 10%–20% of silicate grains can survive, while 30–50% of carbonaceous grains survive even when the initial size distribution cuts off at smaller (0.25 μm) sizes. For a 19 M
⊙ star similar to the progenitor of Cas A, up to 0.1 M
⊙ of dust can survive if the dust grains formed are large. Thus we show that supernovae under the right conditions can be significant sources of interstellar dust.
Monte Carlo Calculations of Helium Escape on Mars via Energy Transfer from Hot Oxygen Atoms
Authors: Gu Hao , Cui Jun , Niu Dandan , He Zhaoguo , Li Kun
Published: October 2020

Understanding He escape is crucial for deciphering the evolution of the He budget on Mars. A number of viable mechanisms have been proposed to drive He escape, with energy transfer from hot O generally thought to be the dominant one. This study is devoted to a state-of-the-art evaluation of the above process assuming hot O is exclusively produced from the dissociative recombination of O2
+ in the Martian ionosphere. A Monte Carlo model is constructed, with model inputs optimized by the recent Mars Atmosphere and Volatile Evolution measurements. The model calculations reveal a dayside He escape flux of (1–2) × 106 cm−2 s−1 referred to the surface, for a possible range of H2 mixing ratio at an altitude of 80 km from 0 to 40 ppm. The computed He escape flux increases with increasing nascent O energy and decreasing atmospheric H2 and H abundances. The portion of the atmosphere below the exobase is found to make an exceptionally large contribution of 95% to He escape.
Minutes-delayed Jets from a Neutron Star Companion in Core-collapse Supernovae
Authors: Soker Noam
Published: October 2020

This paper presents cases in which a neutron star (NS; or a black hole) companion to a type-Ib or type-Ic (stripped-envelope) core-collapse supernova (CCSN) accretes mass from the explosion ejecta and launches jets minutes to hours after explosion. The NS orbits at a pre-explosion radius of a ≃ 1−5 R
⊙. When the ejecta velocity drops to

, the ejecta gas that the NS accretes possesses sufficient specific angular momentum to form an accretion disk around the NS. The NS accretes a fraction of

of the ejecta mass through an accretion disk over a time period of

10 minutes–few hr. If the jets carry about 10% of the accretion energy, then their total energy is a fraction of about 0.003−0.03 of the kinetic energy of the ejecta. The implications of these jets from an NS (or a black hole) companion to a CCSN are the shaping of the inner ejecta to have a bipolar morphology, energizing the light curve of the CCSN, and in some cases the possible enrichment of the inner ejecta with r-process elements.
Mise en forme de l’intime : une expérience de processus créatif avec des adolescents en institution de soin psychiatrique
Authors: Desbareau Marion
Published: October 2020

L’auteure fait le récit clinique de son intervention auprès d’un groupe de douze adolescents en pédopsychiatrie. Il s’agit du montage d’une exposition à partir de textes produits lors d’un atelier d’écriture. Cette expérience met en lumière la difficulté de ce type de projet lorsque celui-ci émane d’une commande institutionnelle, en partenariat avec un service culturel de la ville, pour une exposition destinée au grand public. Comment concilier les attentes institutionnelles, les contraintes du lieu accueillant, et la nécessaire préservation de l’intimité des adolescents ? Dans l’après-coup de cette expérience, un travail de mise en sens a émergé, apportant un éclairage théorico-clinique sur le vécu des jeunes et de l’équipe de soin.
Impact de la médiation animale sur le caregiving de mères détenues avec leur bébé. Une étude pilote
Authors: Signori Alexe , Sadoun-Haillard Catherine , Bailly Laëtitia , Wendland Jaqueline
Published: October 2020

L’objectif de cette étude préliminaire était d’étudier l’impact de trois séances de médiation animale par le chien sur le caregiving de six mères détenues avec leur bébé au sein de la nurserie d’une maison d’arrêt. Les résultats préliminaires ont montré une tendance à l’augmentation du sentiment de compétence parentale et des occurrences de comportements de soin des mères. Cela pourrait s’expliquer par le rôle de support social que jouerait le chien, améliorant la santé psychique des mères et engendrant un caregiving de meilleure qualité. Par ailleurs, l’ensemble des participantes présentait un attachement insécure préoccupé. Cette recherche mériterait d’être reproduite avec un échantillon plus large afin de confirmer ces premiers résultats.
Le degré de sécurité d’attachement et les comportements problématiques des enfants présentant un trouble du spectre de l’autisme
Authors: Lapointe Marilyn , Poirier Nathalie , Abouzeid Nadia
Published: October 2020

La présente étude vise à décrire les liens entre le degré de sécurité d’attachement et les comportements problématiques des enfants présentant un trouble du spectre de l’autisme (TSA) tout en contrôlant l’effet modérateur du stress parental et du niveau de sévérité de l’autisme. Les résultats des questionnaires répondus par 39 parents d’enfants présentant un TSA démontrent que la diminution du degré de sécurité d’attachement des enfants présentant un TSA est significativement liée à la présence de certains comportements problématiques ; tels que les comportements de retrait et les comportements d’inattention. De ce fait, les conclusions de l’étude proposent l’application d’une intervention relationnelle auprès des familles d’enfants présentant un TSA en complémentarité aux autres interventions efficaces dans le domaine du TSA.
La recuperación del gran tratado científico de Alonso de Santa Cruz: El Astronómico Real
Authors: Esteban Piñeiro Mariano , Vicente Maroto Isabel , Gómez Crespo Félix
Published: October 2020

El precioso manuscrito titulado Astronómico Real, realizado por el cosmógrafo Alonso de Santa Cruz, en cumplimiento de un encargo del emperador Carlos, y dedicado a Felipe II, se consideraba perdido. Dentro de su línea de investigación, los autores de este trabajo han localizado y analizado el citado texto, en el que el nombre del cosmógrafo sevillano aparece borrado y sustituido por el de Andrés García de Céspedes, un cosmógrafo posterior. Un estudio minucioso, que recurre tanto a datos biográficos ya conocidos como a otros nuevos recogidos en diferentes cartas inéditas dirigidas por el cosmógrafo al emperador y a su hijo, revela sin lugar a dudas que Santa Cruz es el auténtico autor de esta obra de transcendental importancia. El manuscrito —256 folios a doble cara e ilustrado con magníficas figuras, algunas con ruedas móviles de diferentes colores— está dividido en tres partes: en la primera, un Tratado de la esfera; la segunda contiene una traducción comentada de las Teorías de los planetas de Purbachio y la tercera corresponde a una versión glosada y aumentada del Astronomicum Caesareum de Apiano, complementada con una Cronología o Repertorio. El texto pone de manifiesto los excelentes conocimientos astronómicos (y astrológicos) de su autor, el también cronista, cartógrafo y geógrafo Alonso de Santa Cruz.
La Asociación de la Prensa Médico Farmacéutica (1875), pionera del asociacionismo periodístico español
Authors: Fernández Sanz Juan José
Published: October 2020

La prensa médico-farmacéutica tiene un desarrollo espectacular en las últimas décadas del siglo XIX, convirtiéndose en el sector de la prensa especializada que más paga por «derecho de timbre» {ergo, mayor tirada). A esta eclosión contribuyen: el marco de estabilidad política inaugurado con la Restauración canovista, las mejoras en las técnicas tipográficas y de comunicación que aparecen con la 2.ª fase de la Revolución Industrial, el desarrollo de las especializaciones en Medicina, la creación de los Colegios Oficiales de Médicos y Farmacéuticos en la última década, así como un persistente clima de emulación entre las plumas más relevantes del periodismo médico, en busca de órganos diferenciados de expresión. Es en este contexto propicio donde, en 1875, nace la Asociación de la Prensa Médico-Farmacéutica, pionera del asociacionismo periodístico español, y tal vez, mundial. Fruto inicial de las inquietudes periodísticas y profesionales de buen número de periodistas de distintas revistas médicas madrileñas, a Méndez Alvaro —cuyo liderazgo en este campo del periodismo médico resulta por todos aceptado— le cabe el honor de ser el elemento catalizador, al igual que a El Siglo Médico, el proyecto periodístico médico de mayor envergadura, duración e influencia, en el cual convergen buen número de revistas del gremio.
Terapéutica y materia médica americana de la obra de Andrés Laguna (1555)
Authors: Fresquet Febrer José Luis
Published: October 2020

La introducción en Europa de la materia médica americana se inició con las primeras noticias sobre los remedios curativos del Nuevo Mundo contenidas en los textos colombinos y en otros escritos relacionados con el Descubrimiento. Siguió después una fase de «primeras descripciones» y otra de «primeros estudios analíticos», encabezada por la obra de Nicolás Monardes. A mediados del XVI sólo se habían difundido entre los médicos algunos productos. En este trabajo se pretende estudiar el peso de la materia médica americana y su uso terapéutico en uno de los textos más difundidos de la época: la edición de la «Materia médica» de Dioscórides, con comentarios del médico segoviano Andrés Laguna, que publicó por vez primera en Amberes en 1555, y que fue reeditada veintidós veces hasta el siglo XVIII.
La Biblioteca del Real Colegio de San Fernando de Madrid (1806-1843)
Authors: Alonso A. Miguel , González Bueno A.
Published: October 2020

Tras una breve introducción histórica sobre el Real Colegio de San Fernando de Madrid, institución educativa integrada en la Universidad Literaria de Madrid en 1845, como Facultad de Farmacia, este trabajo analiza el funcionamiento de su biblioteca, su ubicación y distribución espacial, la ordenación por materias del fondo y la organización de sus catálogos. Se estudia también la figura del bibliotecario como cargo anejo al de catedrático sustituto. Por último, se valora la actuación de las enseñanzas impartidas a tenor de los libros incluidos en sus catálogos, centrándonos sobre todo en las disciplinas correspondientes a las áreas de Botánica y Química.
Newton en el pensamiento naturalista de Buffon: La analogía biológica de la gravedad
Authors: Pereira Poza Antonio
Published: October 2020

Desde muy temprano Buffon mostró gran interés por la obra y pensamiento de Newton. La idea dé progresión y expansión infinita, su cosmología, el problema de la generación de los animales sobre todo, van a apoyarse de modo explícito en el concepto de gravedad newtoniano, entendido como una cualidad interna de la materia y de la vida. El autor de este trabajo va exponiendo los conceptos biológicos de «moldes internos», «partículas orgánicas», «materia bruta», señalando la progenie del pensamiento del naturalista francés. Finalmente lleva a cabo el cuestionamiento de la analogía biológica de la gravedad, tan grato a Buffon.
Bibliografía Histórica sobre la Ciencia y la Téc­nica en España. 1991
Authors: Soler Díaz Amparo , López Terrada María Luz , Pardo Tomás José , Salavert Fabiani Vicente L.
Published: October 2020

No disponible.
Peut-on se passer de la notion d’identité ? La contribution de Montaigne
Authors: Giocanti Sylvia
Published: October 2020

Selon Montaigne, parce que l’unité du moi n’est pas donnée, la manière familière d’être à soi relève de la différence à soi. Le désir d’identité s’articule alors avec le besoin social de se doter de déterminations stables. Les Essais analysent ce processus rétrospectif et discursif comme source d’authentification, et pas nécessairement d’aliénation, dans la mesure où l’individu est conduit à l’acceptation de soi, et où il peut réfléchir de manière critique à son inscription dans la communauté à laquelle il appartient.
La fiction de l’adolescence comme quête du moi et critique du fascisme : Les Indifférents d’Alberto Moravia
Authors: Puel Blandine
Published: October 2020

En 1929 paraît le premier roman d’Alberto Moravia, Gli Indifferenti, alors que la dictature fasciste est à son apogée. Cette fiction, amorale à souhait, interroge effrontément les dérives d’une époque en crise imposant à tous un conformisme identitaire calqué sur l’image glorieuse du « Duce ». Michel et Carla, deux adolescents en quête d’une définition honnête d’eux-mêmes, incarnent ce questionnement par leurs hésitations et leur doute existentiel.
“We will call the damsel, and enquire at her mouth”. Re-writing Biblical Women in Contemporary British Novels
Authors: Rychter Ewa
Published: October 2020

In this paper I focus on four contemporary British novels which re-write parts of the Bible [Jenny Diski’s Only Human: A Comedy (2000) and her After These Things: A Novel (2004); Michèle Roberts’s The Wild Girl (1984) and The Book of Mrs Noah (1987)] and examine the way those novels deal with the androcentric (male-centred) character of biblical narratives. Drawing on the taxonomy proposed by Elizabeth Shüssler Fiorenza, I argue that Diski’s and Roberts’s re-writings engage in a complex and subtle relationship with the Bible, in the course of which they do much more than merely trying to reverse or undo biblical patriarchalism and androcentrism. I explain and give examples of how the four novels rely on strategies similar to Fiorenza’s types of feminist hermeneutics (the hermeneutics of suspicion, the hermeneutics of remembrance, and the hermeneutics of imagination). To account for the nuanced selfconsciousness of Diski’s and Roberts’s novels, I introduce the concept of the hermeneutics of weakening, which –emerging from Gianni Vattimo’s il pensiero debole– is meant to conceptualise the enfeebled mode of truth. I see as established by the two woman writers.
Hollywood Indian Sidekicks and American Identity
Authors: Carr Aaron , Larré Lionel
Published: October 2020

The Hollywood movie industry has often employed non-Indian actors to portray Indian characters, and reduced Indian characters to villains or secondary roles. In the wake of centuries of misperceptions and misrepresentations, Hollywood has invented a new form of the “white man’s Indian”, the Indian sidekick. Drawing examples from a dozen movies, this paper attempts to analyze how the Indian sidekick is a symptom of the ambiguous place Native Americans have in the American psyche. Without the Indian sidekick, would the typical American hero be complete?
"Billy walked and I rode": John and William Bartram Roam the World Over
Authors: Machet Laurence , Schweninger Lee
Published: October 2020

In this essay the authors make a two-fold argument. In the footsteps of several recent autobiography theorists, they argue, first, that in any autobiographical travel account the “self” or the “I” of the narrative is a construct, and this hypothesis allows them, second, to maintain that the constructed personas and resultant “characters” in the respective travel accounts of John and William Bartram render John’s son William a sort of sidekick on what is very much the father’s exploratory journey though the American Southeast.
Confusion à la Maison Blanche : la bataille du pouvoir entre Hillary Clinton et Al Gore
Authors: Loizeau Pierre-Marie
Published: October 2020

Cet article s’attache à analyser la rivalité entre Hillary Clinton et Al Gore durant la présidence Clinton. Les réformes successives de la fonction de vice-président ont permis à celui-ci de tenir progressivement le rang de n° 2 au sein de l’Exécutif. En inversant la tendance au profit de la Première Dame, l’administration Clinton instaura une rivalité de pouvoir entre seconds couteaux. L’échec de la réforme du Système de Santé écarta Mme Clinton et rétablit une collaboration plus traditionnelle entre le président et le vice-président. En fin de mandat, le scandale Lewinsky entraîna le discrédit de toute l’administration y compris du vice-président et de la Première Dame.
A working class hero’s sidekick is something to be: sidekicks and underlings in British social realist cinema (1956-2014)
Authors: Marin-Lamellet Anne-Lise
Published: October 2020

This essay focuses on the vital importance of the presence of the sidekick for the working class hero in contemporary British films. Far from being a mere underling or foil, the sidekick often reveals to be more of a double or a partner in the couple he makes with the hero. The evolution of the sidekick from the position of second to that of an alter ego seems to be confirmed by recent developments in British films which increasingly present multi-character stories. In what may be a sign of the times, the hero is then just the “first among equals” in a group of multiple sidekicks.
Les schèmes de régulation de l’activité des enseignants
Authors: Goigoux Roland
Published: October 2020

Dans cet article, Roland Goigoux commente et prolonge deux contributions de ce dossier, celles qui traitent du fonctionnement cognitif des enseignants lorsqu’ils interagissent avec leurs élèves. Il suggère plusieurs pistes pour dépasser les écueils qu’il identifie et apporte des éléments théoriques complémentaires. Il termine en illustrant ses propositions par un exemple de recherche empirique portant sur la manière dont les professeurs régulent leur action en fonction de celle de leurs élèves.
Digital Social Networking Use Effect on Individual Job Performance
Authors: Ben Zouitina Marwa Mallouli , Hachicha Zouhour Smaoui
Published: October 2020

This chapter aims to explore the impact of social networking sites (SNS) usage on individual work performance (IP). A literature review revealed contrasting results. A multiple-case study on 15 employees from eight Tunisian firms has been conducted to highlight the SNS effects on IP in the specific context of democratic transition. Data have been collected by semi-structured interviews and coded using the Nvivo 10 software. The analysis shows that, depending on the level of SNS usage, three types of effect are identified on IP at work: positive, negative, or null. This result invites researcher to consider the usage intensity when analyzing SNS effects on IP. Understanding the different types of SNS usage by actors and their effects on IP could help managers to take appropriate decisions to take profit from this usage. This research suggests also that organizational policy moderates the relationship between SNS usage and IP.
Online Social Networks Misuse, Cyber Crimes, and Counter Mechanisms
Authors: Rao Sanjeev , Verma Anil Kumar , Bhatia Tarunpreet
Published: October 2020

Online social networks (OSNs) are nowadays an indispensable tool for communication on account of their rise, simplicity, and efficacy. Worldwide users use OSN as a tool for social interactions, news propagation, gaming, political propaganda, and advertisement in building brand awareness, etc. At the same time, many OSN users unintentionally expose their personal information that is used by the malicious users and third-party apps to perform various kind for cyber-crimes like social engineering attacks, cyber espionage, extortion-malware, drug-trafficking, misinformation, cyberbullying, hijacking clicks, identity theft, phishing, mistrusts, fake profiles, and spreading malicious content. This chapter presents an overview of various cyber-crimes associated with OSN environment to gain insight into ongoing cyber-attacks. Also, counter mechanisms in the form of tools, techniques, and frameworks are suggested.
Towards Intelligent Agriculture Using Smart IoT Sensors
Authors: Jaitly Vanita , Sharma Shilpa , Raja Linesh
Published: October 2020

The word “smart” is quite commonly associated with different types of products of IoT sensors and its contemporary technology. The frequent progress in the contemporary technology includes convention and the progressive integration of microprocessor. This gives the smart sensors application to a wide range of applications. Smart sensors when associated with agriculture are known as smart agriculture. With the help of smart sensors, technology of internet of things has helped agriculture in facilitating its efficiency, which further helps in decreasing the impact of environment on the production of the crops and deprecate the expenses. This is done by a few methods like calculating the condition of the environment, which affects the production of the crops, keeping a check on the cattle health and indicating when some problem occurs. The author discussed about sensors, their nature and evolution, generations of smarts sensors, and how they became better with the course of time in terms of smart agriculture.
Revitalisation of Lightweight Cladding of Buildings
Authors: Liška Pavel , Nečasová Barbora
Published: October 2020

The basic function of building cladding is to protect the interior against the effects of the external environment. To fulfil this function, cladding must have good thermal and technical properties. The development of construction industry in the then Czechoslovakia after World War II led to higher demands on the construction of administrative and civil buildings in terms of capacity and speed of construction. To achieve these aspects, the construction industry was industrialised. The execution of building cladding with light prefabricated structures allowed to pre-define the required product quality and guarantee its sustainability for the time. On the other hand, due to technological indiscipline, low durability of used materials, poor sophistication of construction details and thermal and technical parameters of the structure, there were many problems which resulted in gradual degradation of these structures and increased necessity of their revitalisation. There are many ways to revitalise these structures on the Czech construction market. In general, contemporary revitalisation systems can be divided into three basic groups. These groups represent the individual stages of revitalisation. The first stage of revitalisation is simply the replacement of window panes. Another (second) stage is the replacement of window panes together with the modification of the panel part of the original structure. The last (third) stage is a complete replacement of the existing cladding with a new one. To evaluate the effectiveness of revitalisation, it was necessary to create a simulated building to which the design variants of these revitalisations were applied. It is clear from the simulation results that the best result is achieved in the second stage of revitalisation, where the window panes are replaced and the panel part of the original cladding is modified. This achieves the optimum ratio of expended financial costs for revitalisation and improvement of the thermal and technical properties of the structure.
Monitoring of Historical Structure by IoT Technology with Use of ESP32 Development Board
Authors: Vokáč Miroslav , Balík Lukáš , Bouška Petr
Published: October 2020

Internet of Thing technology (IoT) is currently developed and IoT commercial networks are being operated and developed in the Czech Republic, as for example LoRa or SigFox. In order to monitor structures or environments (temperature or relative air humidity etc.) with use of these technologies, very cheap hardware can be used, as is the micro controller ESP32 (or its precursor ESP8266). More substantial part of costs represents programming and adjustment for the actual measurement. This article is containing pilot verification of the measuring system based on the above technology during the monitoring of relative displacements in cracks and temperatures of environment on the building structure of cultural monument Church of St. Martin in Zlatá Olešnice. We applied the measurement with sensors of displacement across cracks of the masonry structure in combination with the measurement of the air temperature. The measurement of some cracks proved that the relative displacement is significantly independent on the temperature and, therefore, the displacement is most likely influenced by the unstable conditions in the subsoil of the structure, which is also greatly affected by a ground moisture.
The Issue of Absence of Standards for Properties and Durability of Exposed Concrete
Authors: Utěšená Monika , Sestak Jan , Pernicová Radka
Published: October 2020

The paper analyzes the issue of the absence of technical standards and regulations for exposed concrete in relation to its aesthetic quality and defines the possibilities of approach to the design and project documentation that would effectively lead to the desired visual result. Achieving a high-quality exposed concrete area is only possible if all the mentioned phases of the process are adhered to and the standards related to the execution of concrete structures are respected.
Electrospun SiO2 Nanotextiles for Preservation of a Tangible Cultural Heritage
Authors: Tichá Petra , Domonkos Maria , Trejbal Jan , Demo Pavel , Prošek Zdeněk
Published: October 2020

The developing nanotechnology is getting infiltrated into a wide area of industries. A variety of nanotextiles can be produced from different materials (e.g. polymers, SiO2). Their applications are possible in many industrial branches as well as civil engineering. Silica-based nanotextiles can play a fundamental role in civil engineering. The potential utilization of nanotextiles in civil engineering is promising as surface protective layers. Wettability of SiO2 nanotextiles was studied on different thicknesses of samples and were tested under static conditions by determination of the water contact angle. Their water contact angle, which indicates the degree of wetting, was measured using an optical tensiometer.
Contrast transesophageal three dimensional echocardiographic imaging for patent foramen ovale: a needful role?
Authors: Al Sergani Reem , Michele Sara Di , Kinsara Abdulhalim J. , Galzerano Domenico , Vriz Olga , Elmahi Isra , Cittadini Antonio , Colonna Paolo , AlKattan Khaled M.
Published: October 2020

We report a case of a 55-year-old male admitted for cardiogenic embolic ischemic stroke work up. A transesophageal (TE) echocardiography (E) with contrast study to rule out patent foramen ovale (PFO) was performed; two-dimensional (2D) analysis did not detect any bubbles passage during Valsalva manoeuvre in the standard 2D cross sectional planes; further real time three-dimensional (3D) TEE imaging revealed passage of bubbles in the left atrium (LA) by both real-time 3DTEE imaging and by the 2D unconventional cross-sectional planes allowed by 3DTEE imaging. Even though 2DTEE is considered to be the gold standard modality for diagnosing PFO, it has some limitations. It has never been reported about usefulness of 3DTEE in PFO imaging. Even in the presence of only a report, our case suggests that 3DE could have an additional value and will compliment 2D imaging in PFO assessment.
Circular Economy and Corporate Social Responsibility: A Literature Review
Authors: Del Baldo Mara , D’Anghela Mariapia
Published: October 2020

The CE model assures a different approach on the relations between economy, environment and society. The CE concept have been investigated in the recent literature above all in understanding the approaches of businesses towards this new model. The paper presents a short literature review aimed at exploring how the Corporate Social Responsibility (CSR) and (CE) are analysed in literature directing attention on how the companies incorporate the CE concept in their sustainability practices. The work contributes to provide insights on how the companies are integrating the CE activities in CSR practices and shows that a deeper investigation of the topic is needed.
Innovación empresarial y tecnologías de la información y comunicación universitaria
Authors: Chiriboga-Mendoza Fidel Ricardo , Zambrano-Pilay Enrique Cristóbal , Aguaiza-Tenelema Jessenia Maritza
Published: October 2020

La innovación empresarial es un método que desde siempre ha sido forma de atraer a nuevos consumidores, pero en la actualidad el concepto de innovación empresarial se ha visto transformado con la aparición de herramientas como la denominada tecnología de la información y comunicación, a nivel Latinoamericano es cada vez más común ver a empresas que basan su supervivencia en la utilización de herramientas tecnológicas, aunque muchas veces el uso de estas no salga bien. Palabras claves: innovación empresarial, empresa, herramientas tecnológicas.
Turismo local: perspectivas de mejoras
Authors: Delgado-Delgado Alexis Alexander
Published: October 2020

El turismo en el Ecuador es una gran fuente de ingresos, por el hecho de que Ecuador es un país con una diversidad cultural muy grande y paisajes naturales que no se encuentran mucho. Ciertos factores estudiados en este trabajo investigativo han afectado mucho al turismo, y se ha visto como todos los lugares turísticos han dejado de ser visitados por muchas personas. El presente artículo trata de la afectación que ha tenido todo lo correspondiente al sector turístico y cuáles pueden ser las perspectivas de mejoras en los próximos meses.

Palabras claves: turismo, afectación, sector turístico.
Comportamiento del mercado local y estrategias de ventas locales frente a la pandemia por Covid-19 en la ciudad de Manta
Authors: Castro-Veliz Ronmel Steven , Zambrano-Roldán Karen
Published: October 2020

Esta investigación está orientada a abordar el impacto de la pandemia en el mercado mantense, las pandemias son eventos sanitarios que ponen en riesgo todos los niveles de la sociedad desde la salud hasta la economía. Ecuador enfrenta esta pandemia en los peores momentos, la economía del país se encuentra vulnerable, 80% de los negocios y empresas no realizaban ninguna actividad debido a la crisis sanitaria, lo que se realiza mediante la recolección de información de distintas fuentes y herramientas como una encuesta que fue dirigido a clientes y dueños de distintos locales ubicados en el sector comercial de la ciudad Manta (La bahía, Nuevo Tarqui).

Palabras clave: Economía, Pandemia, Estrategia de Marketing.
A LITTLE-KNOWN ROOT-WEEVIL OF CASSAVA (COELOSTERNUS SULCATULUS BOHEMAN)
Authors: Leonard Mortimer D.
Published: October 2020

Resumen en inglés.
MYCOLOGICAL EXPLORATIONS OF COLOMBIA
Authors: Chardon Carlos E. , Toro Rafael A.
Published: October 2020

Resumen en inglés.
A NEW SPECIES OF ARISTELLIGER FROM NAVASSA
Authors: Grant Chapman
Published: October 2020

Resumen en inglés.
A NEW SPHAERODACTYL FROM PORTO RICO
Authors: Grant Chapman
Published: October 2020

Resumen en inglés
THE LARGE AMEIVAS OF THE PUERTO RICO REGION WITH ONE NEW SPECIES
Authors: Grant Chapman
Published: October 2020

Resumen en inglés
A GENUS OF GECKO NEW TO THE GREATER ANTILLES
Authors: Grant Chapman
Published: October 2020

Resumen en inglés
THE RELATION OF ANTHER COLOR AND THE PROPORTIONS OF STARCH FILLED POLLEN GRAINS IN THE SUGAR CANE
Authors: Bregger Thomas
Published: October 2020

1. It has been shown that within rather wide limits there is a positive relationship between pollen fertility as indicated by the iodine test and the degree of anther coloration in the sugar cane. 2. That pollen samples taken from dried flowers nine months after the fresh samples have been taken are similar in their iodine reaction has also been demonstrated.
RECENT EXPERIMENTS IN THE CONTROL OF TWO PUERTO RICAN ANTS
Authors: Wolcott George N.
Published: October 2020

1. Under local conditions, experiments have indicated little value for thallium compounds and mixtures against the hormiga brava, Solenopsis geminata F., out-of-doors. In-doors, the thallium sulfate syrup has been just as uniformly successful as out-of-doors it is a failure. An emulsion of crude carbolic acid, either alone or mixed with kerosene emulsion or the engine oil emulsion sprays used for scale control, is still the cheapest and most effective insecticide to use against this ant in citrus groves, pineapple plantings and vegetable gardens. 2. Against the hormiguilla, Myrmelachista ambigua ramulorum Wheeler, a bait consisting of ground meat and thallium acetate is very effective, and gives promise of being adopted commercially when cheaper and simpler methods of application are devised.
RESEARCH ON SHORTENING TIME WITHOUT AFFECTING THE ACCURACY OF DYER'S MODIFIED METHOD FOR THE DETERMINATION IN SOILS, OF PHOSPHORIC ACID, LIME AND POTASH SOLUBLE IN CITRIC ACID SOLUTION (1 PER CENT)
Authors: Amedée Bonnet Juan , Villamil Fernando A.
Published: October 2020

Research was undertaken with the purpose of shortening time without affecting accuracy of the Dyer modified method for the determination in soils, of phosphoric acid, lime and potash soluble in 1 per cent citric acid solution. A short method is recommended for the lime determination based on the Chapman's method (4) for the precipitation of calcium oxalate in acid solutions (pH 3.9-4.2) in the presence of iron, aluminum, titanium, manganese, magnesium and phosphates. A short method is recommended for the phosphoric acid determination. Results are analyzed statistically by Student's method. Several of the colorimetric methods recommended for the phosphoric acid determination are also discussed.
NEW CERAMBYCID BEETLES FROM PUERTO RICO
Authors: Fisher W. S.
Published: October 2020

Resumen en inglés.
NEW EUCNEMID BEETLES FROM PUERTO RICO
Authors: Fisher W. S.
Published: October 2020

Resumen en inglés.
THE ANTS OF PUERTO RICO
Authors: Smith M. R.
Published: October 2020

Resumen en inglés.
A Numerical computation of airflow over Iraq
Authors: Sabeeh Basheer1 Firas , Ghalib Nassif Wedyan , H.Hussain Al-Saleem Hazim
Published: October 2020

Abstract The best way to understand the general atmosphere system is to collect and analyze data, identify the variables that occur in the upper and lower classes, and compare them with other values in favor of comparing them to other studies and research. Studies have been conducted in this research by analyzing the wind speed and direction and comparing it with the surface roughness to reach a concept by dividing the regions of Iraq on the basis of the surface roughness that affects the wind speed near the surface. The research aims to know the effect of air flow on the nature of the earth's surface and its effect on the different regions in Iraq. The methods used in the study depend on the hourly rates of surface roughness, wind speed and direction taken from the European-Mediterranean Weather Forecast (ECMWF) for a full year 2016 from 34 stations over Iraq. Results obtained from wind speed analysis and trend data. The highest value of wind speed (6.5 m / s) in the less rough areas (0-50 m) is concentrated in the semi-desert in the southern and western regions of the country (Anbar, Najaf and Smawa) and the lowest wind speed (1.8 m / s) for the rough areas (11- 72 m) in the mountainous regions in the northern part of the state. The importance of the results enables us to know the movement of air in this layer in terms of its weakness or strength according to the nature of the surface of the earth, as it has formed (barren lands, bodies of water, mountainous areas), which can be used in future studies to monitor the movement and speed of winds and to determine the natural properties of the air layer in contact with the surface of the earth. This requires knowledge of the impact of temperature, wind speed and direction in dividing the layers of Iraq on the basis of surface roughness.
Leucemia mielóide aguda em crianças e adolescentes em instituições Brasileiras: realidade e desafios
Authors: De Melo Rodrigues Ana Luiza , Lenzi Luana , Lee-Jones Lisa , Vieira Wanderley Alayde , Marinho Da Silva Ana Maria , Rocha De Carvalho Cinthya , Teixeira Costa Juliana , Galvão De Castro Junior Cláudio , De Martino Lee Maria Lucia , Mendes Lins Mecneide , Rezende Godinho Patrick , Correa Ribeiro Raul
Published: October 2020

Objective: To describe the outcome of acute myeloid leukemia (AML) among children treated in Brazilian institutions. Methods: A structured online questionnaire was sent to pediatric oncologists affiliated to the Brazilian Society of Pediatric Oncology. The physicians and institutions were unidentified. Results: One hundred and four pediatric oncologists in all Brazilian regions answered the questionnaire. The treatment-related mortality rate was reported to be higher than 30% by 29.8% of the participants. Difficulty in accessing the intensive care unit (ICU) was reported by 54.8%. About 85% had access to cytogenetics, 78% to molecular testing, 94% to the measurement of residual disease by flow cytometry. About 90% of participants reported access to HSCT, but 86% of them had difficulties in providing HSCT timely. About 95% of the respondents indicated the need to create a national treatment protocol, and 89.4% are willing to collaborate with a national study group. Conclusion: Our study demonstrated large gaps in the treatment of pediatric AML in Brazil. To improve outcome, a national protocol will have to consider the regional differences and adapt the management according to the local resources.
Arthrogryposis Multiplex Congenita: A Rare Case Report
Authors: SHINDE ABHIJIT , Dr. Sunil Natha Mhaske  , Dr. Shreya Nilesh Bhate
Published: October 2020

Arthrogryposis Multiplex Congenita is a descriptive term with various etiologies and complex clinical features including multiple joint contractures of various limb joints. It is associated with malformations, malfunctions and neurologic deficiencies. We report the case of a new born term female child admitted at Rural Medical College, Ahmednagar (Maharashtra) with positive family history and evident clinical features of arthrogryposis multiplex congenita. Multidisciplinary management was instituted. This case is presented for its rarity.
Relación entre rendimiento académico y estilos de aprendizaje
Authors: Yumán Ramírez Ingrid Marisol
Published: October 2020

En el año 2000 la Universidad de San Carlos de Guatemala implemento el Programa Académico Preparatorio -PAP- constituyéndose en un programa permanente, continuo y sistemático, cuyo propósito es nivelar los conocimientos de ciencias básicas de los aspirantes a ingresar a la USAC, que obtienen un resultado insatisfactorio en las Pruebas Básicas.  Cada año se inscriben al PAP 1200 estudiantes, de los cuales solo el 25% logra obtener resultado satisfactorio, dejando la inquietud de conocer cuáles son los estilos de aprendizaje de los estudiantes del PAP y sus efectos en el rendimiento académico. El objetivo de la investigación es identificar los estilos de aprendizaje y su relación con el rendimiento académico, la población  fue de 418 estudiantes, de 8 secciones  entre las edades de 16 a 32 años, de los cuales 104 fueron mujeres y 314 hombres, para conocer los estilos de aprendizaje se aplicó una escala de Likert, con valores de acuerdo y desacuerdo en escala de 1 a 5, dando como resultado que 301 alumnos tiene un aprendizaje visual, 78 un aprendizaje auditivo y 39 un aprendizaje kinestésico. Predominando el aprendizaje visual con el 72% de la población total.  Para identificar la relación entre estilos de aprendizaje y rendimiento académico se realizó un análisis correlación lineal, entre la nota obtenida en el curso de matemática y el valor promedio (de 1 a 5) obtenido en la escala de Likert, dando como resultado que ninguno de los estilos de aprendizaje está relacionado con el rendimiento académico.