bluuebunny/crossref_metadata_2025 huggingface dataset:
Clima y cafetales: Tome decisiones acertadas conociendo su interacción.
Authors: García-López Juan Carlos
Published: October 2022

El tiempo corresponde a variaciones que tienen las variables climáticas en un lugar y momento determinados y, el clima, se caracteriza por estados y evoluciones del tiempo durante un período de tiempo y un lugar o región dados. La meteorología es el estudio del tiempo en instantes o cortos períodos, mientras la climatología estudia el clima y sus variaciones a lo largo del tiempo. La región cafetera colombiana, por su ubicación, se define como tropical de montaña, en la cual diferentes factores de variabilidad climática, como las ondas tropicales, oscilaciones estacionales e intra estacionales y, particularmente, la zona de confluencia intertropical, influencian los eventos climáticos y determinan los cambios en los sistemas de producción. La puesta en marcha del observatorio meteorológico cafetero en 1949, ha permitido entender el comportamiento climático y su relación con el cultivo y su entorno. Varios de los aspectos clave del estudio de los principales elementos climáticos, se han puesto al servicio de las demás áreas del conocimiento, con el fin consolidar las opciones tecnológicas esenciales para la producción y rentabilidad del café en Colombia. Se destacan entre otros: definición de los períodos húmedos y secos como estrategia de planificación, del análisis histórico de las temperaturas se tiene establecida la relación con la duración de los procesos fenológicos y, en el caso del brillo solar, se ha corroborado su importancia como determinante del potencial de producción en cada zona. En el seminario los participantes podrán profundizar en varios de los aspectos mencionados y tendrán mejores argumentos para entender los retos que impone las condiciones de clima cambiantes.
Cenicafé, Ciencia y tecnología para la caficultura colombiana.
Authors: Gaitán Alvaro
Published: October 2022

La Caficultura con 200 años de historia ha tenido muchos cambios y la Federación Nacional de Cafeteros de Colombia desde sus inicios se ha apoyado en la ciencia y tecnología realizada por Cenicafé, para tomar mejores decisiones. Al realizar estudios vinculados al café es imprescindible considerar la lluvia, puesto que este aspecto caracteriza a la caficultura colombiana. Ahora bien, el fenómeno de la Zona de Confluencia Intertropical privilegia a Colombia obteniendo lluvia en todos los meses y con pocas condiciones secas marcadas, brindando producción de café durante todo el año. No obstante, para los enemigos del café como lo es la roya y la broca también es una ventaja y un desafío constante para el caficultor. En consecuencia, las investigaciones de Cenicafé son realizadas con las premisas de que Colombia es rico y diverso en recursos naturales, el café tiene interacciones complejas con otros cultivos y con gran variación en los territorios. Por tanto, es necesario enfocarse en que las fincas sean productivas, reduciendo costos de producción y mejorando el valor del café con base en la mayor calidad del producto. Finalmente, en el seminario se presenta el modelo de desarrollar investigación científica y tecnológica de Cenicafé con sus diferentes actores como los son el Comité Directivo, la Gerencia Técnica, el Servicio de Extensión, las Dependencias de la FNC y las Disciplinas de Cenicafé.
Más Calidad: Conozca las prácticas claves en el beneficio y secado del café.
Authors: Peñuela Aída Esther
Published: October 2022

El objetivo de la poscosecha de café es mantener la calidad del producto para que se conserve en el proceso de transformación hasta el consumo. La estrategia “Más Agronomía, Más Productividad, Más Calidad” de la Federación Nacional de Cafeteros, plantea el uso de siete prácticas que deben realizarse durante el beneficio y secado, para obtener café de buena calidad y disminuir el riesgo de deterioro. Las prácticas se basan en las recomendaciones y tecnologías que se han desarrollado en Cenicafé a lo largo de la historia de la disciplina de Poscosecha y que son de fácil aplicación en las fincas cafeteras colombianas. Se incluyen recomendaciones y tecnologías desde la recolección y recibo del café en el beneficiadero, hasta el transporte y almacenamiento. Las siete prácticas claves pueden ser usadas y apropiadas en las fincas cafeteras independiente de la cantidad de café que se procese, ya que aplican para pequeñas o grandes cantidades de café. Para mantener la calidad del café durante las diferentes etapas del proceso, cada una de ellas debe ser realizada con las recomendaciones de modo que no se deteriore la calidad. Se resalta la necesidad de mantener una homogeneidad en la masa de café que facilite el seguimiento de las etapas, así como el buen funcionamiento y mantenimiento de los equipos que están en contacto con el café durante la transformación, tener adecuados criterios de seguimiento de la finalización de etapas claves como la fermentación y secado y el cuidado después de obtener el producto estable para la comercialización.
Non-detection of He I in the Atmosphere of GJ 1214b with Keck/NIRSPEC, at a Time of Minimal Telluric Contamination
Authors: Spake Jessica J. , Oklopčić A. , Hillenbrand L. A. , Knutson Heather A. , Kasper David , Dai Fei , Orell-Miquel Jaume , Vissapragada Shreyas , Zhang Michael , Bean Jacob L.
Published: October 2022

Observations of helium in exoplanet atmospheres may reveal the presence of large gaseous envelopes and indicate ongoing atmospheric escape. Orell-Miquel et al. (2022) used CARMENES to measure a tentative detection of helium for the sub-Neptune GJ 1214b, with a peak excess absorption reaching over 2% in-transit depth at 10830 Å. However, several non-detections of helium had previously been reported for GJ 1214b. One explanation for the discrepancy was contamination of the planetary signal by overlapping telluric absorption and emission lines. We used Keck/NIRSPEC to observe another transit of GJ 1214b at 10830 Å at a time of minimal contamination by telluric lines, and did not observe planetary helium absorption. Accounting for correlated noise in our measurement, we place an upper limit on the excess absorption size of 1.22% (95% confidence). We find that the discrepancy between the CARMENES and NIRSPEC observations is unlikely to be caused by using different instruments or stellar activity. It is currently unclear whether the difference is due to correlated noise in the observations, or variability in the planetary atmosphere.
Spectral Evolution of Dark Asteroid Surfaces Induced by Space Weathering over a Decade
Authors: Hasegawa Sunao , DeMeo Francesca E. , Marsset Michaël , Hanuš Josef , Avdellidou Chrysa , Delbo Marco , Bus Schelte J. , Hanayama Hidekazu , Horiuchi Takashi , Takir Driss , Jehin Emmanuël , Ferrais Marin , Geem Jooyeon , Im Myungshin , Seo Jinguk , Bach Yoonsoo P. , Jin Sunho , Ishiguro Masateru , Kuroda Daisuke , Binzel Richard P. , Nakamura Akiko M. , Yang Bin , Vernazza Pierre
Published: October 2022

The surfaces of airless bodies like asteroids in the solar system are known to be affected by space weathering. Experiments simulating space weathering are essential for studying the effects of this process on meteorite samples, but the problem is that the time spent to reproduce space weathering in these experiments is billions of times shorter than the actual phenomenon. In 2010 December, the T-type asteroid 596 Scheila underwent a collision with an impactor a few tens of meters in size. A decade later, there is an opportunity to study how the surface layer of this asteroid is being altered by space weathering after the impact. To do so, we performed visible spectrophotometric and near-infrared spectroscopic observations of 596 Scheila. The acquired spectrum is consistent with those observed shortly after the 2010 impact event within the observational uncertainty range. This indicates that the surface color of dark asteroids is not noticeably changed by space weathering over a 10 yr period. This study is the first to investigate color changes due to space weathering on an actual asteroid surface in the solar system. Considering that fresh layers are regularly created on asteroid surfaces by collisions, we suggest a genetic link between D/T-type and dark (low albedo) X-complex asteroids and very red objects such as 269 Justitia, 732 Tjilaki, and 203 Pompeja. New observations show that 203 Pompeja has an X-type-like surface, with some local surface areas exhibiting a very red spectrum.
Hubble Space Telescope Reveals Spectacular Light Echoes Associated with the Stripped-envelope Supernova 2016adj in the Iconic Dust Lane of Centaurus A
Authors: Stritzinger Maximilian D. , Taddia Francesco , Lawrence Stephen S. , Patat F. , Fraser Morgan , Galbany Lluís , Holmbo Simon , Hyder Ali , Karamehmetoglu Emir
Published: October 2022

We present a multiband sequence of Hubble Space Telescope images documenting the emergence and evolution of multiple light echoes (LEs) linked to the stripped-envelope supernova (SN) 2016adj located in the central dust lane of Centaurus A. Following point-spread function subtraction, we identify the earliest LE emission associated with an SN at only +34 days past the epoch of the B-band maximum. Additional HST images extending through +578 days cover the evolution of LE1 taking the form of a ring, while images taken on +1991 days reveal not only LE1 but also segments of a new inner LE ring (LE2) as well as two additional outer LE rings (LE3 and LE4). Adopting the single-scattering formalism, the angular radii of the LEs suggest they originate from discrete dust sheets in the foreground of the SN. This information, combined with measurements of color and optical depth of the scattering surfaces, informs a scenario with multiple sheets of clumpy dust characterized by a varying degree of holes. In this case, the larger the LE’s angular radii, the farther in the foreground of the SN its dust sheet is located. However, an exception to this is LE2, which is formed by a dust sheet located in closer proximity to the SN than the dust sheets producing LE1, LE3, and LE4. The delayed appearance of LE2 can be attributed to its dust sheet having a significant hole along the line of sight between the SN and Earth.
Florida Keys Mosquito Control District mosquito trapping data between Vaca Key and Lower Matecumbe Key, 2018-2021
Authors: Murray Heidi
Published: October 2022

The Florida Keys Mosquito Control District (FKMCD) is an independent taxing district in Monroe County, Florida. The mission of FKMCD is to protect the community and visitors of the Florida Keys from mosquito-borne disease and prevent nuisance mosquitoes from impacting the quality of life of its citizens and the local economy. The State of Florida requires mosquito control programs to provide recorded evidence of mosquito activity prior to pesticide application. Surveillance is an appropriate method to record the abundance and mosquito species present in an area to determine if adulticide applications are necessary. Mosquito surveillance traps have been set by FKMCD since 1998. Trapping is conducted throughout the District to document species composition and abundance.  Mosquito surveillance is used for operational decisions for both nuisance mosquitoes and disease vectors.

This data set includes previously unreported mosquito trapping results in Monroe County, Florida. This data set includes trap results collected from CDC light traps and BG Sentinel traps set weekly on Vaca Key, Flamingo Island, Key Colony Beach, Fat Deer Key, Crawl Key, Long Point Key, Grassy Key, Long Key, and Lower Matecumbe Key from January 1, 2018 through December 31, 2021.
Le fact-checking en France, une réponse en condensé du journalisme face aux transformations numériques des années 2000 et 2010
Authors: Nicey Jérémie
Published: October 2022

Cet article interroge la part prise par la pratique professionnelle du fact-checking en France dans les mutations profondes du journalisme contemporain. À partir d’une revue de littérature approfondie, il est ici examiné dans quelle mesure les transformations – techniques, économiques et structurelles – liées au numérique ont été particulièrement incarnées par les cellules de vérification de l’information mises en place par plusieurs médias. Ces dernières se sont appropriées les potentialités offertes par les dispositifs numériques, qu’il s’agisse des outils et compétences, des liens avec les publics, ou encore de la (re)définition de stratégies économiques et réputationnelles, incluant le dilemme des relations avec les géants du numérique.
La presse quotidienne régionale : un modèle informationnel sous tension
Authors: Amiel Pauline , Bousquet Franck
Published: October 2022

Dans cet article, nous analysons les modalités de mutation de la presse quotidienne régionale depuis vingt-cinq ans. Les évolutions en lien avec le numérique mais aussi en termes de modèle économique et de rapport aux territoires ont participé à la transformation du type de presse le plus lu en France. Plus particulièrement, ce sont les quatre piliers fondateurs de ce type de média, c’est-à-dire son rôle dans l’espace public local (1), sa proximité et sa fonction de « service » (2), sa grille de lecture « totale » du monde (3) ainsi que son enchâssement éditorial et son intervention dans la construction des territoires (4) qui ont été bouleversés.
Les publics de l’information en ligne : « faire public » au temps de l’information par les réseaux socio-numériques
Authors: Croissant Valérie
Published: October 2022

Ce texte propose de réinvestir la notion de publics médiatiques dans le contexte de l’information numérique. Il s’agit de comprendre comment des médias en ligne pure players « font public » à partir non pas de leurs stratégies éditoriales mais des pratiques de leurs usagers. Le questionnement sera mené à partir d’une enquête sur les pratiques d’information des étudiants sur mobile. Analyser le travail des usagers à « faire public » à partir des leurs pratiques informationnelles c’est redonner de l’épaisseur à des médiations informationnelles pouvant être considérées comme illégitimes car relevant de jeunes adultes et se pratiquant à partir des plateformes et réseaux socio-numériques
L’impact du vieillissement sur les comptes sociaux
Authors: Cusset Pierre-Yves
Published: October 2022

Avortée en 2020 suite à la crise de la Covid-19, la réforme des retraites est au programme du deuxième mandat du président Macron depuis la campagne électorale du printemps 2022, et régulièrement confirmée comme figurant à l’agenda du gouvernement, en dépit de l’absence de majorité absolue au Parlement. Réputée indispensable pour faire face aux difficultés de financement à venir du fait du vieillissement démographique, ses modalités font l’objet de nombreux débats et de vives discussions entre partenaires sociaux en France, qui ne manqueront pas de se prolonger dans les mois à venir. Dans ce contexte, les travaux réalisés ce printemps par France Stratégie * , coordonnés par Pierre-Yves Cusset et consistant à mesurer l’impact du vieillissement démographique sur la protection sociale en France, constituent un apport essentiel pour nourrir les débats. Cet article en présente la méthode et les principaux enseignements. Tout d’abord, il importe de rappeler qu’il s’agit bien ici de mesurer la pression que fait peser le vieillissement de la population, et uniquement ce facteur, sur les comptes sociaux, à partir du scénario central des projections démographiques publiées par l’INSEE. Ainsi, à dépenses et recettes par habitant à chaque âge inchangées, le déficit de la protection sociale aurait été de 110 milliards d’euros en 2019, si la France avait eu la pyramide des âges anticipée pour 2040 (versus un excédent de 13 milliards constaté en 2019) : un choc massif, mais dont l’auteur montre qu’il est quasiment du même ordre de grandeur que celui auquel la France a déjà fait face ces deux dernières décennies. Qui plus est, cet impact mécanique du vieillissement est sensiblement moins fort en France que chez ses voisins européens (Allemagne, Espagne notamment), grâce à une population jeune plus nombreuse. Aussi, si le choc démographique à venir dans les 20 années à venir est loin d’être négligeable (estimé autour de cinq points de produit intérieur brut), il pourrait être moins difficilement surmontable qu’on ne le craint — grâce aux effets encore à venir des réformes passées, et sous réserve d’un minimum de croissance économique.  S.D.
Géopolitique de l’espace numérique
Authors: d’Agrain Henri
Published: October 2022

Après avoir largement traité dans Futuribles du dilemme auquel nous sommes exposés entre la protection de nos libertés individuelles et collectives, et l’essor des mesures adoptées, souvent à l’aide du numérique, à des fins sécuritaires, nous ouvrons ici un nouveau chapitre, celui de la géopolitique du numérique qui, s’il constitue aujourd’hui un instrument de pouvoir, comme beaucoup de technologies, peut être à la fois une opportunité et une menace. Comme l’explique ici Henri d’Agrain, les notions de frontière, d’identité, de durée, de valeur…, qui prévalent dans l’espace physique, prennent un sens différent dans l’espace numérique, le cyberespace, au sein duquel se déploient désormais, sous des formes nouvelles, des confrontations et des conflits entre États, principaux garants de l’ordre international, et organisations supraétatiques susceptibles, par de nombreux moyens, d’être porteuses de cybermenaces. La sécurité dans cet espace numérique devient donc un enjeu majeur, comme en témoignent, par exemple, les attaques visant à s’introduire et à paralyser un système d’information, ou le vol de données. C’est pourquoi il convient d’être vigilant en cette matière, et de mettre en place une stratégie nationale et européenne de sécurité numérique qui, selon l’auteur, doit se développer selon quatre axes : le développement des technologies de cybersécurité, l’adaptation des moyens de police et de justice, le développement de capacités spécialisées, éminemment régaliennes, en matière de cyberdéfense, et l’effacement de la « singularité » de l’industrie du numérique sur le marché européen. H.J.
Politique industrielle : le retour ?
Authors: Papon Pierre
Published: October 2022

La France, comme bien d’autres pays, est confrontée depuis de nombreuses années à une succession de crises, de nature économique, sanitaire, géopolitique, énergétique…, qui ont montré combien certains secteurs économiques étaient devenus (ou redevenus) stratégiques. Outre les denrées alimentaires qui ont ramené sur le devant de la scène la nécessité d’une certaine souveraineté alimentaire, les difficultés d’approvisionnement en certains minerais, métaux, composants électroniques, produits pharmaceutiques…, ont aussi montré l’importance du secteur industriel. Après des décennies de désindustrialisation, la nécessité de recouvrer une souveraineté dans ce secteur reprend place en haut de l’agenda politique. Est-ce possible ? Comment ? Dans quel délai ? L’économiste Élie Cohen s’est penché sur la question dans un ouvrage sorti en début d’année, juste avant qu’éclate le conflit russo-ukrainien, et ses analyses permettent d’éclairer très utilement le sujet. Pierre Papon en présente ici les grandes lignes et montre combien la question de la souveraineté industrielle de la France est devenue déterminante pour son économie, et combien il est important de déployer une réelle stratégie en la matière. S.D.
Prison tient ma vie enfermee , ou comment se recréer une vie sociale derrière les barreaux : le cas du Prisonnier desconforté
Authors: Blot Caroline
Published: October 2022

Isolé du monde par les barreaux de sa prison, l’auteur du Prisonnier desconforté du château de Loches fait face à la vacuité de sens produite par cette peine qui est, par définition, une privation de vie publique. Dès lors, la poésie devient la voie privilégiée pour recréer ce monde absent. Il s’agit tout d’abord pour le Prisonnier de rejouer la Genèse divine qui se dissout alors dans une genèse littéraire, action mimétique et proprement poïétique. La voix poétique rappelle ensuite directement le monde à ses yeux à travers une revue testimoniale des états du monde et de sa propre expérience. Mais cette capture visuelle tend à créer une permanence artificielle et illusoire, douloureuse ; il ne reste plus dès lors au Prisonnier qu’à tenter de multiplier les formes de dialogue, avec les futurs lecteurs, avec Dieu, avec les œuvres littéraires passées ou futures, que ce soit par des adresses directes ou des formes poétiques invitant en elles-mêmes au dialogue. L’ouverture ne se fait plus au monde mais par l’ouverture d’un nouveau monde, fait de mots et d’échos.
Entre les murs : l’hôpital d’Amour du Livre du Cœur d’amour épris
Authors: Fourré Tristan
Published: October 2022

Alors que le retrait final du Cœur entre les murs de l’hôpital résonne comme une forme d’enfermement, il s’agit d’interroger l’organisation spatiale de ce lieu qui vient ébranler le chevalier en le présentant comme un malade qui s’ignore. Multipliant les frontières (seuils, passages, limites…), il spatialise l’identité du héros afin de mieux la remodeler. Ces différentes métamorphoses, vécues au gré de la découverte des merveilles de l’hôpital – notamment l’armorial et le cimetière –, interrogent non seulement la vitalité du Cœur, mais aussi celle de la littérature dont il est l’héritier. L’opposition entre amants loyaux et déloyaux, directement inspirée de L’Hôpital d’Amour d’Achille Caulier, soulève en effet la question de la fidélité, y compris vis-à-vis d’une tradition littéraire. De fait, le séjour à l’hôpital semble mettre en tension différentes possibilités d’appréhender l’expérience amoureuse (la vivre, la lire, l’écrire). Derrière le Cœur qui visite l’édifice affin d’en savoir raconter se laisse alors entendre une voix qui vacille, cherchant une manière de survivre, en quête de matière. Ainsi, tandis que le personnage se retire à l’hôpital, la voix poétique se déploie hors les murs, délivrant un diagnostic littéraire et mettant le livre au monde.
$ L_{\infty} $-norm minimum distance estimation for stochastic differential equations driven by small fractional Lévy noise
Authors: Jiao Huiping , Zhang Xiao , Wei Chao
Published: October 2022

This paper is concerned with $ L_{\infty} $-norm minimum distance estimation for stochastic differential equations driven by small fractional Lévy noise. By applying the Gronwall-Bellman lemma, Chebyshev's inequality and Taylor's formula, the minimum distance estimator is established and the consistency and asymptotic distribution of the estimator are derived when a small dispersion coefficient $ \varepsilon\rightarrow 0 $.
Monotonicity properties arising in a simple model of Wolbachia invasion for wild mosquito populations
Authors: Vicencio Diego , Vasilieva Olga , Gajardo Pedro
Published: October 2022

In this paper, we propose a simplified bidimensional Wolbachia infestation model in a population of Aedes aegypti mosquitoes, preserving the main features associated with the biology of this species that can be found in higher-dimensional models. Namely, our model represents the maternal transmission of the Wolbachia symbiont, expresses the reproductive phenotype of cytoplasmic incompatibility, accounts for different fecundities and mortalities of infected and wild insects, and exhibits the bistable nature leading to the so-called principle of competitive exclusion. Using tools borrowed from monotone dynamical system theory, in the proposed model, we prove the existence of an invariant threshold manifold that allows us to provide practical recommendations for performing single and periodic releases of Wolbachia-carrying mosquitoes, seeking the eventual elimination of wild insects that are capable of transmitting infections to humans. We illustrate these findings with numerical simulations using parameter values corresponding to the wMelPop strain of Wolbachia that is considered the best virus blocker but induces fitness loss in its carriers. In these tests, we considered multiple scenarios contrasting a periodic release strategy against a strategy with a single inundative release, comparing their effectiveness. Our study is presented as an expository and mathematically accessible tool to study the use of Wolbachia-based biocontrol versus more complex models.
En quête de complicités
Authors: Jarroux Pauline
Published: October 2022

Entre septembre et décembre 2020 s’est tenu le procès des attentats de janvier 2015. Si l’audience visait à déterminer la responsabilité de 14 individus, d’autres complicités avec les faits jugés, situées à plus ou moins grande distance du périmètre de l’instruction, ont été énoncées à l’audience. Témoignant de luttes de cadrage portées par des acteurs différents, ces complicités « autres » ont différemment éprouvé l’espace symbolique de l’audience et ont contribué à politiser le prétoire. Elles ont diversement travaillé les acteurs du procès – y compris le chercheur – en contribuant notamment à complexifier les lignes de tension classiques entre défense, partie civile et accusation.
The Behavioral Intention of Using Online Food Delivery Services During the COVID-19 Pandemic in Vietnam
Authors: Man The Nguyen  , Le Anh Giang , Bui Trinh Thi Tuyet , Dang Ngoc Vuong Bao , Ngo Nhan Thien
Published: October 2022

Growing internet technology has incurred variations in customer way of life and online shopping habits. Originating from the integrated framework of technology acceptance model and health belief model, the purpose of this study is to investigate the influence of determinants, such as perceived usefulness, perceived ease of use, trust, social influence, perceived susceptibility, and perceived severity on customers' intentions of using online food delivery (OFD) services. By employing a total of 459 usable responses in Vietnam, the research hypotheses were empirically validated using structural equation modeling (SEM) approach. The results of this study exhibited that the constructs all have positive influences on the usage behavior of OFD services, while perceived ease of use is found to influence users' perceived usefulness. This study complements key insights into the literature on the acceptance of technology during the pandemic in general, the online food delivery technology in particular.
The Impact of Mobile Educational Games on Contemporary Users' Learning Behavior
Authors: Huang Jian , Fang Gege , Liu Yang , Zhang Menghan
Published: October 2022

The purpose is to cope with mobile educational game users' low continuous utilization rate. This thesis innovatively introduces the deep learning technology to study and the relationship between the mobile educational game and learners' learning behavior. It is found that learners' game experience is significantly correlated with game satisfaction. The estimation algorithm is designed based on the convolutional neural network (CNN), and the questionnaire method is adopted. The design tool of the estimation algorithm is a computer system, and the social software is used for the questionnaire. The dataset source used in the estimation algorithm design is “World Sudoku Championship.” The game satisfaction questionnaire and learning behavior questionnaire subjects are 60 primary school students and 300 college students, respectively.
Resiliência e desempenho acadêmico: um estudo com graduandos de contabilidade
Authors: Mendes Silva Marlon , Garcia de Oliveira Joice , De Oliveira Durso Samuel , Veneroso Alves da Cunha Jacqueline
Published: October 2022

Estudos sobre resiliência vêm ganhando cada vez mais importância na literatura relacionada ao ensino superior (BREWER et al., 2019). A complexidade do assunto permite analisar lacunas ainda não preenchidas pela academia. Neste contexto, o objetivo do artigo foi analisar a relação entre a resiliência e o desempenho acadêmico dos estudantes de Ciências Contábeis. Para atingir o objetivo proposto pela pesquisa, foi aplicado um questionário a 183 discentes regularmente matriculados no curso de Contabilidade em uma universidade pública brasileira no segundo semestre de 2019. Para mensurar a resiliência dos discentes, utilizou-se a Resilience Scale, amplamente validada pela literatura (WAGNILD, 2009). Para o desempenho acadêmico, utilizou-se a autopercepção dos estudantes, metodologia já empregada em estudos anteriores (CORNACCHIONE JUNIOR et al., 2010; MUJICA et al., 2019). A análise dos dados contou com teste de médias, regressões lineares simples e múltipla. Como principais resultados, destaca-se a relação diretamente proporcional entre a resiliência e o desempenho acadêmico dos discentes. Essa evidência se manteve consistente, inclusive, quando controlada por outros fatores, como prolongamento de curso e renda familiar. Variáveis como gênero, religião e o período que o discente se encontra na graduação apresentaram, ainda, significância estatística para explicar o nível de resiliência dos participantes da pesquisa. O estudo contribui com a literatura na medida que levanta evidências sobre a importância da resiliência para o desempenho acadêmico dos estudantes. Adicionalmente, tanto para academia quanto para a prática contábil, o artigo endereça achados que permitem considerar uma nova variável no entendimento do desempenho acadêmico dos discentes de Contabilidade.
Neuro Behcet’s disease
Authors: Liyanage D. S. , Vithanage K. K. , Gamage R.
Published: October 2022

Behcet’s disease is a multisystem vasculitis of unknown aetiology, in which neurologic involvement has been reported in the range of 5% to 10%. We report a young patient, who presented with orogenital ulcers, brainstem dysfunction and positive pathergy reaction where the diagnosis of Neuro Behcet’s disease (parenchymal type) was made. His magnetic resonance imaging (MRI) showed bilateral lesions, mainly in brainstem, thalami and periventricular regions. He was successfully treated with immunosuppressive agents.
VEGF promotes diabetic retinopathy by upregulating the PKC/ET/NF-κB/ICAM-1 signaling pathway
Authors: Zhang Meiying , Zhou Min , Cai Xia , Zhou Yan , Jiang Xueling , Luo Yan , Hu Yue , Qiu Rong , Wu Yanrong , Zhang Yuejin , Xiong Yan
Published: October 2022

Diabetic retinopathy (DR) is a common microvascular complication in patients with diabetes mellitus. DR is caused by chronic hyperglycemia and is characterized by progressive loss of vision because of damage to the retinal microvasculature. In this study, we investigated the regulatory role and clinical significance of the vascular endothelial growth factor (VEGF)/protein kinase C (PKC)/endothelin (ET)/nuclear factor-κB (NF-κB)/intercellular adhesion molecule 1 (ICAM-1) signaling pathway in DR using a rat model. Intraperitoneal injections of the VEGF agonist, streptozotocin (STZ) were used to generate the DR model rats. DR rats treated with the VEGF inhibitor (DR+VEGF inhibitor) were used to study the specific effects of VEGF on DR pathology and the underlying mechanisms. DR and DR+VEGF agonist rats were injected with the PKCβ2 inhibitor, GF109203X to determine the therapeutic potential of blocking the VEGF/PKC/ET/NF-κB/ICAM-1 signaling pathway. The body weights and blood glucose levels of the rats in all groups were evaluated at 16 weeks. DR-related retinal histopathology was analyzed by hematoxylin and eosin staining. ELISA assay was used to estimate the PKC activity in the retinal tissues. Western blotting and RT-qPCR assays were used to analyze the expression levels of PKC-β2, VEGF, ETs, NF-κB, and ICAM-1 in the retinal tissues. Immunohistochemistry was used to analyze VEGF and ICAM-1 expression in the rat retinal tissues. Our results showed that VEGF, ICAM-1, PKCβ2, ET, and NF-κB expression levels as well as PKC activity were significantly increased in the retinal tissues of the DR and DR+VEGF agonist rat groups compared to the control and DR+VEGF inhibitor rat groups. DR and DR+VEGF agonist rats showed significantly lower body weight and significantly higher retinal histopathology scores and blood glucose levels compared to the control and DR+VEGF inhibitor group rats. However, treatment of DR and DR+VEGF agonist rats with GF109203X partially alleviated DR pathology by inhibiting the VEGF/ PKC/ET/NF-κB/ICAM-1 signaling pathway. In summary, our data demonstrated that inhibition of the VEGF/ PKC/ET/NF-κB/ICAM-1 signaling pathway significantly alleviated DR-related pathology in the rat model. Therefore, VEGF/PKC/ET/NF-κB/ICAM-1 signaling axis is a promising therapeutic target for DR.
A new development in training by correspondence - Management training by Teletuition Part 2
Authors: Marais George
Published: October 2022

No abstract available.
Overseas partnership for joint ventures: Can ties abroad boost the export performance of South African companies?
Authors: Möckel Lothar
Published: October 2022

No abstract available.
Activating Management: A Managerial Philosophy or a Technique?
Authors: Venter J. J.
Published: October 2022

No abstract available.
Die Groot Sake-onderneming in die Gemeenskap - Big Business and Society
Authors: Van Wyk Chris
Published: October 2022

No abstract available.
The Concept of Strategy for the Small Businessman
Authors: MacMillan I. C.
Published: October 2022

No abstract available.
The Measurement of Advertising Effectiveness
Authors: Orphen Christopher
Published: October 2022

No abstract available.
Some Aspects of the Demand for Consumers' Durables and Hire-purchase Credit, with Reference to South Africa
Authors: Meyer W. N.
Published: October 2022

No abstract available.
From the Editor
Authors: Dykstra H. K.
Published: October 2022

No abstract available.
Effects of Dietary Triiodothyronine or Dopamine on Small Intestinal Oxygen Consumption in Chicks
Authors: Chang Shen-Chang , Fan Yang-Kwang , Peng Shao-Yu , Lin Min-Jung
Published: October 2022

This study aimed to investigate the effects of triiodothyronine (T3)- or dopamine (Dp)-supplemented diets on oxygen consumption by Na+, K+-ATPase activity in broiler chicks. Five groups, each with twenty-four 6-day-old chicks, randomly received one of the five dietary treatments: (1) Basal diet (commercial broiler rations with 23.0% crude protein and 3,133 kcal metabolizable energy/kg) or CON, (2) basal diet plus 0.7 μmol Dp/kg diet or Dp0.7, (3) basal diet plus 2.4 μmol Dp/kg diet or Dp2.4, (4) basal diet plus 1.9 μmol T3/kg diet or T1.9, and (5) basal diet plus 3.8 μmol T3/kg diet or T3.8 from 6 to 14 days of age. There were four replicates per treatment and 120 birds in total. At 14 days of age, three chicks from each replicate of each treatment were pooled into a flock and fed commercial broiler diets until 7 weeks of age. Compared to CON group, birds fed with T3-supplemented diets had lower thyroid, abdominal fat pad, gizzard and pancreas weight, and heavier heart weight adjusted for fasted body weight. Chicks with T1.9 had lower ileal densities at 14 day old compared with those in Dp groups or CON. Chicks with T3.8 exhibited greater duodenal and jejunal O2 consumptions as well as ouabain-sensitive O2 consumptions of jejunum and small intestine (duodenum, jejunum, and ileum) by 46.5%, 58.3%, 40.6%, and 26.4% increases, than those in CON. Partial correlation analysis revealed that the weight and length of the small intestine were negatively correlated with body weight gain. Oxygen consumption in the various small intestinal segments was negatively correlated with their respective densities (mg/mm2). In conclusion, a greater oxygen requirement for maintaining ouabain-sensitive respiration (Na+-K+-ATPase) in the intestine limits energy availability to support gastrointestinal tract growth and, thereby, may result in lower body weight gain.
Forkhead Box S1 Inhibits the Progression of Lung Squamous Cell Carcinoma Cells by Mediating Wnt/β-Catenin Pathway
Authors: Wang Fei , Li Song
Published: October 2022

Lung squamous cell carcinoma (SCC) is considered the frequent subtype of non-small cell lung cancer (NSCLC) and results in high mortality worldwide every year. Forkhead box S1 (FOXS1) is correlated to multiple cancers, but the role and the mechanism of FOXS1 in lung SCC are unclear. This study revealed that FOXS1 was low expressed in the lung SCC tissues by utilizing UALCAN and TIMER databases. Western blotting analysis was introduced to estimate the FOXS1 expression in the lung SCC cells. Functionally, overexpression of FOXS1 dramatically inhibited cell proliferation, migration, invasion, and epithelial–mesenchymal transition in the lung SCC cells. However, knockdown of FOXS1 exerted diverse effects on lung SCC cell progression. Moreover, FOXS1 overexpression suppressed tumor growth in nude mice remarkably. Furthermore, FOXS1 overexpression reduced the activity of Wnt/β-catenin signal, while FOXS1 silence reversed the roles notably. In conclusion, our present study proved that FOXS1 inhibited lung SCC development in vitro and in vivo might by modulating Wnt/β-catenin signaling pathway.
Exosomes Derived from Bone Marrow Mesenchymal Stem Cells Promote Proliferation and Migration via Upregulation Yes-Associated Protein/Transcriptional Coactivator with PDZ Binding Motif Expression in Breast Cancer Cells
Authors: Wu Wanming , Huang Renfeng , Ou Linyang , Lei Ruiwen
Published: October 2022

Bone marrow mesenchymal stem cells (BM-MSCs), with the properties of self-renewal and pluripotency, can migrate to the tumor sites and exert complex effects on tumor progression and communications by releasing exosomes. However, to our knowledge, only a few studies have reported the effects of BM-MSCs exosomes on breast cancer cells development. Here, utilizing exosomes isolated from in vitro BM-MSCs, we systematically investigated this issue in a breast cancer cell line. In this study, we found that BM-MSCs exosomes are actively incorporated by breast cancer cell MDA-MB-231 cells and subsequently promote MDA-MB-231 cells proliferation and migration. Mechanistically, we further found Yes-associated protein (YAP) and transcriptional coactivator with PDZ binding motif (TAZ) which are Hippo signaling components were involved in this promoting progress. Consistently, YAP and TAZ knockdown could significantly reverse breast cancer cells proliferation and migration improved by BM-MSCs exosomes. Taken together, our findings demonstrated a new mechanism through which BM-MSCs-derived exosomes may contribute to breast cancer cells proliferation and migration, which might provide an evidence for novel drug discovery based on exosomes and Hippo signaling.
Colocolic Intussusception Because of Lipoma in a 44-year-Old Adult
Authors: Eshraghi Samani Reza , Salemi Negin , Firouzfar Alireza
Published: October 2022

Lipoma is an uncommon mesenchymal tumor of the colon. They are typically symptom free, the large lipomas within the colon are rare, and can cause obstruction, bleeding, or intussusception. Intussusception is comparatively common in pediatrics and in adults, it could be a rare entity. Pathologic lesions are usually found with a major percentage of malignancy. This is a retrospective evaluation of an adult with an intestinal intussusception who underwent oncosurgical treatment. He was diagnosed with surgically proven intussusception. Using ultrasound and colonoscopy as diagnostic studies, colocolic intussusception was discovered. The patient underwent oncosurgical exploration. Intestinal resection with abrupt anastomosis was the procedure of choice for the patient. The etiology was benign lipoma. Adult intussusception should be evaluated in any patient with subacute abdominal discomfort with bearing in mind the high rate of malignancy and a lower rate of benign tumors. intestinal resection without reducing is highly recommended for colonic intussusceptions.
Renal Function in Patients with Thalassemia Major Receiving Exjade® Dispersible Tablets and a New Film-coated Tablet Formulation of Deferasirox (Nanojade®)
Authors: Falahati Vahid , Ghasemi Ali , Safari Mohammad Reza , Ghaffari Kazem , Yousefichaijan Parsa , Zamanian Maryam
Published: October 2022

Background:

In patients with β-thalassemia major (TM), one of the long-term complications of regular blood transfusion is renal dysfunction. The purpose of the current study was to evaluate the renal function in TM patients receiving Exjade® dispersible tablets and a new film-coated tablet formulation of deferasirox (Nanojade®).

Materials and Methods:

In this descriptive cross-sectional study, a total of 80 TM patients aged 11–48-year-old entered the study. Patients received 20–30 mg/kg/d (single dose) Exjade® (Exjade group, n = 40) and Nanojade® (Nanojade group, n = 40) orally. To evaluated renal function, serum creatinine (SCr), estimated glomerular filtration rate (eGFR), blood urea nitrogen (BUN), 24-h urine protein (UPro), UCa/UCr, spot UPro/UCr ratio, and serum ferritin were calculated at baseline and every 3 months to 9 months.

Results:

There was no significant difference in SCr, BUN, eGFR, 24-h UPro, UPro/UCr ratio, UCa/UCr ratio, and serum ferritin between groups at baseline and end of study (P
baseline> 0.05, P
end of study> 0.05). There was no significant difference in proteinuria between groups at baseline and end of study (P
baseline> 0.05, P
end of study> 0.05).

Conclusions:

The proportion of SCr, BUN, eGFR, 24-h UPro, UPro/UCr ratio, and UCa/UCr ratio was not significantly different in TM patients treated with Nanojade® compared to patients’ received Exjade®. Nanojade® had similar effects to Exjade®, and therefore, the use of Nanojade® is safe in TM patients and does not seem to be associated with increased renal failure, proteinuria, and hypercalciuria.
Dermatosis Neglecta in Inpatients of a Tertiary Care Center
Authors: Kareddy Sruthi , Babu Spoorthy , Pappala Mamatha
Published: October 2022

Background:

Dermatosis neglecta (DN) is an underdiagnosed localized pigmentary disorder, characterized by asymptomatic hyperpigmented patches and plaques with adherent scales in an inadequately cleansed area. It is a diagnostic challenge leading to unnecessary interventions and burden to patients. Dermoscopy is a noninvasive handy diagnostic tool, though its utility in the diagnosis of DN is unexplored.

Objective:

To describe the various clinical and dermoscopic patterns in patients with DN.

Materials and Methods:

An observational study in 10 admitted patients of a tertiary hospital with DN was done, who consulted in department of dermatology in view of hyperpigmented lesions. After a thorough history and clinical examination, dermoscopy was done over the lesions.

Results:

In 10 patients, DN was confirmed with a resolution of part of lesion on the application of water-soaked gauze. On dermoscopy, dark-brown polygonal, cornflake-like scales are seen arranged in a mosaic pattern with intervening normal skin, sometimes over an erythematous background. On further probing, most patients gave the history of unintentional neglect of the affected part related to their primary illness.

Limitations:

Small sample size.

Conclusions:

DN is an underreported localized hyperpigmented disorder, mimicking other dermatoses. It should always be kept in mind in patients with morbidities that lead to the inability to maintain hygiene in the relevant areas, which may not be the classically described sites of DN. Dermoscopy helps to differentiate it from other hyperpigmented lesions, especially in its milder forms, avoiding the act of wiping the lesions especially in areas associated with hyperesthesia and helps in reinforcing the diagnosis. However, the criteria to diagnose DN based on dermoscopy is not definite.
Mucocutaneous Adverse Effects of Remdesivir and Favipiravir in Patients with Covid-19 Infection
Authors: Balasubramanian Pradeep , Laldinthari Chhakchhuak , Lalnunpuia Robert
Published: October 2022

Introduction:

Remdesivir and favipiravir are two antiviral medicines used in the treatment of Covid-19 infection widely. The studies pertaining to the mucocutaneous adverse events of these two drugs are scarce. Hence, we performed a systematic review to bridge the above gap.

Materials and Methods:

The study is performed according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) statement. All original articles, case series, and case reports pertaining to mucocutaneous adverse drug reactions caused by remdesivir and favipiravir, while any of these drugs were administered in Covid-19-infected patients, were included in the present study.

Results:

Six articles were identified pertaining to the mucocutaneous adverse reactions of remdesivir, of which two were original articles and four were case reports. Four case reports pertaining to the mucocutaneous adverse events of favipiravir are included in this study. The details regarding the same are elaborated in the main manuscript.

Conclusion:

In the present systematic analysis, the mucocutaneous adverse events of the two widely used antiviral medications in Covid-19 were described. This articles throws light on the aspects which are hardly reported or discussed in the literature.
A prospective observational study to determine the predictors of failure of non-invasive ventilation in patients with type 2 respiratory failure
Authors: Khan Mohammed Fahad , Acharya Vasudeva , Shastry Barkur Ananthakrishna
Published: October 2022

Background:

This study aims to evaluate clinical and biochemical parameters likely to predict the failure of non-invasive ventilation (NIV) in patients with type 2 respiratory failure.

Methods:

The study was conducted from September 2016 to August 2018. Clinical and biochemical parameters of 151 patients were analysed after the application of NIV and divided into two groups, success group if they remained on NIV after 48 h and failure group if intubated.

Results:

Among 151 patients, 65 patients (43%) were intubated and included in the failure group. The remaining 86 patients (57%) were included in the success group. Of the 65 patients who got intubated, 16 patients died while 49 recovered. Out of the 151 patients enrolled the gender distribution was 65 males and 86 females. There was no statistically significant association of the outcome of NIV usage with the comorbidity of the patient and with the underlying lung pathology of the patient. Seventy-two per cent (47 patients) of the NIV failures were in the first 6 h. Lower pH, higher partial pressure of carbon dioxide, higher heart rate and respiratory rate (RR) at baseline showed a statistically significant association with the failure of NIV usage in patients with type 2 respiratory failure. Failure of clinical and biochemical parameters to improve at various time points was also associated with increased chances of failure of NIV usage.

Conclusions:

Linear regression analysis showed that pH and RR at baseline and presence of severe pulmonary artery hypertension were found to be predictors of failure of NIV.
Cywilizacja jako proces, część 1: Korzenie idei
Authors: Klimczyk Wojciech
Published: October 2022

Civilization as a process. Part 1: The roots of the idea. The article is the first installment in the series reconstructing the history of the idea of civilization seen as process and discussing its usefulness for contemporary civilizational studies. The first part of the text analyzes two roots of the term using the latin words civilitas and civitias. After pointing out ancient antecedents of the notion of civilization, the article analyzes in detail the civilizational discourse of the Enlightenment, emphasizing Victor de Mirabeau’s and Immanuel Kant’s con-tributions. This leads to the conclusion that civilization can on the most general level be defined as refinement of society by ordering it by law. In the process of attaining civilization, civil society, understood as a collective bonded by mutual respect and prefering peaceful regulation over violence, becomes the lawgiving subject. Even though civilization, as the cult of good manners, can become an emp-ty formalism, mutual courtesy and respect are still necessary conditions for civil society’s existence. If we understand the process of civilization along such lines, it remains worthy of consant research, especially comparative studies, today.