bluuebunny/crossref_metadata_2025 huggingface dataset:
Confiabilidad y validez de una escala de conciencia sobre salud sexual en migrantes de México en tránsito hacia Estados Unidos
Authors: Guerra Ordoñez Jesús Alejandro , Benavides-Torres Raquel Alicia , Burgos-Regil José Luis , Zapata-Garibay Rogelio , Onofre-Rodríguez Dora Julia
Published: October 2019

Los contagios por VIH siguen en aumento. Las poblaciones migrantes que cruzan la frontera hacia Estados Unidos se consideran en riesgo. La conciencia sobre salud sexual es una variable importante para prevenir Infecciones de Transmisión Sexual (ITS)-Virus de Inmunodeficiencia Humana (VIH)/Sida, pero actualmente no existe un instrumento en español para medirla. El propósito fue evaluar las características psicométricas de la traducción y adaptación cultural de la Scale of Health Consciousness en 160 migrantes de la frontera norte de México en tránsito a EE. UU. El muestreo fue aleatorio sistemático, se utilizó la metodología del Human Services Research Institute para su adaptación. Los participantes fueron de origen mexicano, 90% hombres, edad promedio de 39.75 y una media de 7.69 años de estudio, la escala presentó consistencia interna de 0.86 y buen ajuste factorial (X2/gl = 2.397, p < 0.001) - (CFI = 0.92 – GFI = 0.92). El instrumento final se considera fiable y con validez de constructo aceptable por lo que se recomienda continuar utilizándolo.
Distribución espacial del desove del camarón rosado Penaeus notialis (Pérez-Farfante, 1967) de 2010 a 2013 en las zonas de pesca del golfo de Guacanayabo, Cuba
Authors: Ventura Flores Arlen , Giménez Hurtado Enrique , Delgado Miranda Gilma , Cobas Gómez Lisset Susana
Published: October 2019

Las capturas comerciales de Penaeus notialis en el golfo de Guacanayabo están reducidas por lo que se quiere conocer si la distribución espacial del desove de la especie ha sufrido variaciones. Se determinó el porcentaje de hembras maduras en 18 cuadrículas de las tres zonas de pesca de la Empresa Pesquera Industrial de Granma (Epigran) del año 2010 al año 2013. Se tomó una muestra aleatoria de 3 kg de camarón por cada arrastre obteniendo largo, sexo y estadio de maduración de las hembras. En las tres zonas de pesca del Golfo se observó desove con el máximo de maduración de 26% muy por debajo del considerado como pico de desove de 50% de hembras maduras. En este Golfo se detecta una afectación en la capacidad reproductiva de la especie en cuanto a la proporción de hembras maduras que es decreciente temporalmente, sin embargo, se mantiene la distribución espacial del desove.
Estudiando la relación del turismo con el desarrollo humano en destinos turísticos mexicanos
Authors: Guerrero Rodríguez Rafael
Published: October 2019

El presente artículo tiene como principal objetivo discutir la relación entre el crecimiento de actividades turísticas y el desarrollo humano de poblaciones que son consideradas destinos turísticos. Para ello, se analizó información relacionada al Índice de Desarrollo Humano (IDH) y la dinámica turística en 44 municipios mexicanos reconocidos por la Secretaría de Turismo Federal como destinos prioritarios desde el año 2012. La hipótesis central de este estudio es que considerando los supuestos beneficios generados por el desarrollo turístico estos municipios deberían presentar un panorama de bienestar proporcional. Los resultados, sin embargo, apuntan a una realidad diferente, se generan múltiples interrogantes acerca del papel que desempeña el turismo como posible agente de desarrollo. Esta información puede ser útil para identificar aquellos factores clave que determinan la distribución de costos y beneficios en cada uno de estos destinos turísticos.
Tasa relativa de crecimiento de herbáceas con potencial de restauración en suelos degradados del bosque La Primavera, Jalisco, México
Authors: Mayo-Mendoza Milca , Romo-Campos Rosa de Lourdes , Medina-Fernández Pablo
Published: October 2019

39 especies herbáceas fueron sembradas en suelos degradados del bosque La Primavera, con dos tratamientos, 1: siembra con todas las especies y 2: siembra con las fabáceas y 15 días después se agregó el resto de las especies, en parcelas de 1 m-2. Con Análisis de Varianza (Anova) analizamos cobertura, densidad y tasa de crecimiento (cociente del área foliar y tasa de asimilación neta). La Dalea leporina registró la cobertura más alta y la Cosmos bipinnatus la mayor densidad. Las asteráceas registraron el crecimiento más alto. Desmodium sericophyllum y D. aparines mostraron el cociente del área foliar más alto y Cosmos bipinnatus la tasa de asimilación mayor. La presencia de otras especies no afectó la densidad ni el crecimiento de las fabáceas; además, mostraron ajustes morfológicos y fisiológicos con ventajas competitivas para establecerse en suelos degradados, por lo que son la mejor opción para iniciar procesos de sucesión vegetal para restaurar suelos en La Primavera.
Nuevos registros de aves acuáticas para el interior del Estado de Jalisco: caso Laguna de Sayula, México
Authors: Güitrón López María Marcela , Huerta Martínez Francisco Martín
Published: October 2019

El conocimiento de la avifauna en México, es el resultado de muchos años de exploraciones en áreas específicas, sin embargo a pesar del esfuerzo realizado, en algunas regiones de México aún se desconoce su composición y distribución; tal es el caso de los humedales continentales, los cuales representan sitios de invernada y de paso migratorio para una gran variedad de aves acuáticas y terrestres del Neártico, así como sitios de reproducción para especies residentes. Se destacan observaciones realizadas en el Sitio Ramsar Laguna de Sayula, resultado de un estudio avifaunístico a largo plazo con muestreos mensuales durante cinco periodos de migración. Se reportan seis nuevos registros para el humedal y algunos para el interior del estado (Dendrocygna autumnalis, Branta canadensis, Sula leucogaster, Pelecanus occidentalis, Pluvialis squatarola y Charadrius semipalmatus) y se informa la presencia de Anser albifrons y Anser rossii con pocos registros publicados para la zona.
Transgenic Archaerhodopsin-3 Expression in Hypocretin/Orexin Neurons Engenders Cellular Dysfunction and Features of Type 2 Narcolepsy
Authors: Williams Rhîannan H. , Tsunematsu Tomomi , Thomas Alexia M. , Bogyo Kelsie , Yamanaka Akihiro , Kilduff Thomas S.
Published: October 2019

Narcolepsy, characterized by excessive daytime sleepiness, is associated with dysfunction of the hypothalamic hypocretin/orexin (Hcrt) system, either due to extensive loss of Hcrt cells (Type 1, NT1) or hypothesized Hcrt signaling impairment (Type 2, NT2). Accordingly, efforts to recapitulate narcolepsy-like symptoms in mice have involved ablating these cells or interrupting Hcrt signaling. Here, we describeorexin/Archmice, in which a modified archaerhodopsin-3 gene was inserted downstream of theprepro-orexinpromoter, resulting in expression of the yellow light-sensitive Arch-3 proton pump specifically within Hcrt neurons. Histological examination along withex vivoandin vivoelectrophysiological recordings of male and femaleorexin/Archmice demonstrated silencing of Hcrt neurons when these cells were photoilluminated. However, high expression of theArchtransgene affected cellular and physiological parameters independent of photoillumination. The excitability of Hcrt neurons was reduced, and both circadian and metabolic parameters were perturbed in a subset oforexin/Archmice that exhibited high levels of Arch expression.Orexin/Archmice also had increased REM sleep under baseline conditions but did not exhibit cataplexy, a sudden loss of muscle tone during wakefulness characteristic of NT1. These aberrations resembled some aspects of mouse models with Hcrt neuron ablation, yet the number of Hcrt neurons inorexin/Archmice was not reduced. Thus,orexin/Archmice may be useful to investigate Hcrt system dysfunction when these neurons are intact, as is thought to occur in narcolepsy without cataplexy (NT2). These results also demonstrate the utility of extended phenotypic screening of transgenic models when specific neural circuits have been manipulated.

SIGNIFICANCE STATEMENTOptogenetics has become an invaluable tool for functional dissection of neural circuitry. While opsin expression is often achieved by viral injection, stably integrated transgenes offer some practical advantages. Here, we demonstrate successful transgenic expression of an inhibitory opsin in hypocretin/orexin neurons, which are thought to promote or maintain wakefulness. Both brief and prolonged illumination resulted in inhibition of these neurons and induced sleep. However, even in the absence of illumination, these cells exhibited altered electrical characteristics, particularly when transgene expression was high. These aberrant properties affected metabolism and sleep, resulting in a phenotype reminiscent of the narcolepsy Type 2, a sleep disorder for which no good animal model currently exists.
Estradiol Enhances the Depolarizing Response to GABA and AMPA Synaptic Conductances in Arcuate Kisspeptin Neurons by Diminishing Voltage-Gated Potassium Currents
Authors: DeFazio R. Anthony , Navarro Marco A. , Adams Caroline E. , Milescu Lorin S. , Moenter Suzanne M.
Published: October 2019

Synaptic and intrinsic properties interact to sculpt neuronal output. Kisspeptin neurons in the hypothalamic arcuate nucleus help convey homeostatic estradiol feedback to central systems controlling fertility. Estradiol increases membrane depolarization induced by GABAAreceptor activation in these neurons. We hypothesized that the mechanisms underlying estradiol-induced alterations in postsynaptic response to GABA, and also AMPA, receptor activation include regulation of voltage-gated potassium currents. Whole-cell recordings of arcuate kisspeptin neurons in brain slices from ovariectomized (OVX) and OVX+estradiol (OVX+E) female mice during estradiol negative feedback revealed that estradiol reduced capacitance, reduced transient and sustained potassium currents, and altered voltage dependence and kinetics of transient currents. Consistent with these observations, estradiol reduced rheobase and action potential latency. To study more directly interactions between synaptic and active intrinsic estradiol feedback targets, dynamic clamp was used to simulate GABA and AMPA conductances. Both GABA and AMPA dynamic clamp-induced postsynaptic potentials (PSPs) were smaller in neurons from OVX than OVX+E mice; blocking transient potassium currents eliminated this difference. To interrogate the role of the estradiol-induced changes in passive intrinsic properties, different Markov model structures based on the properties of the transient potassium current in cells from OVX or OVX+E mice were combinedin silicowith passive properties reflecting these two endocrine conditions. Some of tested models reproduced the effect on PSPsin silico, revealing that AMPA PSPs were more sensitive to changes in capacitance. These observations support the hypothesis that PSPs in arcuate kisspeptin neurons are regulated by estradiol-sensitive mechanisms including potassium conductances and membrane properties.

SIGNIFICANCE STATEMENTKisspeptin neurons relay estradiol feedback to gonadotropin-releasing hormone neurons, which regulate the reproductive system. The fast synaptic neurotransmitters GABA and glutamate rapidly depolarize arcuate kisspeptin neurons and estradiol increases this depolarization. Estradiol reduced both potassium current in the membrane potential range typically achieved during response to fast synaptic inputs and membrane capacitance. Using simulated GABA and glutamate synaptic inputs, we showed changes in both the passive and active intrinsic properties induced byin vivoestradiol treatment affect the response to synaptic inputs, with capacitance having a greater effect on response to glutamate. The suppression of both passive and active intrinsic properties by estradiol feedback thus renders arcuate kisspeptin neurons more sensitive to fast synaptic inputs.
p75NTR and DR6 Regulate Distinct Phases of Axon Degeneration Demarcated by Spheroid Rupture
Authors: Yong Yu , Gamage Kanchana , Cheng Irene , Barford Kelly , Spano Anthony , Winckler Bettina , Deppmann Christopher
Published: October 2019

The regressive events associated with trophic deprivation are critical for sculpting a functional nervous system. After nerve growth factor withdrawal, sympathetic axons derived from male and female neonatal mice maintain their structural integrity for ∼18 h (latent phase) followed by a rapid and near unison disassembly of axons over the next 3 h (catastrophic phase). Here we examine the molecular basis by which axons transition from latent to catastrophic phases of degeneration following trophic withdrawal. Before catastrophic degeneration, we observed an increase in intra-axonal calcium. This calcium flux is accompanied by p75 neurotrophic factor receptor-Rho-actin-dependent expansion of calcium-rich axonal spheroids that eventually rupture, releasing their contents to the extracellular space. Conditioned media derived from degenerating axons are capable of hastening transition into the catastrophic phase of degeneration. We also found that death receptor 6, but not p75 neurotrophic factor receptor, is required for transition into the catastrophic phase in response to conditioned media but not for the intra-axonal calcium flux, spheroid formation, or rupture that occur toward the end of latency. Our results support the existence of an interaxonal degenerative signal that promotes catastrophic degeneration among trophically deprived axons.

SIGNIFICANCE STATEMENTDevelopmental pruning shares several morphological similarities to both disease- and injury-induced degeneration, including spheroid formation. The function and underlying mechanisms governing axonal spheroid formation, however, remain unclear. In this study, we report that axons coordinate each other's degeneration during development via axonal spheroid rupture. Before irreversible breakdown of the axon in response to trophic withdrawal, p75 neurotrophic factor receptor-RhoA signaling governs the formation and growth of spheroids. These spheroids then rupture, allowing exchange of contents ≤10 kDa between the intracellular and extracellular space to drive death receptor 6 and calpain-dependent catastrophic degeneration. This finding informs not only our understanding of regressive events during development but may also provide a rationale for designing new treatments toward myriad neurodegenerative disorders.
Solidifying the White Domination through Racism and Slavery in Toni Morrison’s Beloved
Authors: Thohiriyah Thohiriyah
Published: October 2019

Beloved is a novel written by American author, Toni Morrison. Through Beloved, Toni Morrison successfully depicts a heartbreaking phenomenon of slavery that happened in the USA in 1873. Morrison describes the phenomenon of dominance-submission interrelation patterns in a master-slave relationship. By using the concept of racism and slavery, the paper aims at scrutinizing how the whites perform racism and slavery to solidify their domination over the blacks. Besides, it is aimed at investigating the impacts of slavery and racism done by the whites which are experienced by the slaves. Library research and close-reading methods are employed to analyze the novel. Besides, the qualitative and contextual method which focuses on intrinsic and extrinsic elements is utilized. The result of the analysis shows that racism and slavery are major elements that solidify whites’ domination over black slaves. In other respect, racism and slavery lead to great negative impacts for the black slaves. Excessive trauma and identity loss are the major impacts experienced by the slaves as the consequence of slavery and racism.
The Question of Choice in an Achievement
Authors: Barakat Mahmoud Abdelrazig Mahmoud
Published: October 2019

Achievement tests administered at national level play a significant role in the lives of test-takers as well as the whole society. This paper aims to investigate the effect of giving students a choice between two optional questions on their overall performance in a high-stake achievement test for university admission. It is hypothesized that questions targeting writing-based productive skills and language system necessitate display of abilities which are different from fact-based questions designed around story content. The two items are assumed to reflect different constructs that require different criteria of assessment. Consequently, the student’s overall score is affected by the item they choose to answer, which might not be reflective of their real language abilities. An open-ended interview was carried out with ten teachers working with grade 3 students in model secondary schools to investigate the nature of the two types of test items and their impact on the student’s performance. The data has proved that giving choice in an achievement test generates different performances that are assessed differently. It is recommended that in order to address the question of fairness, it is important to clearly define and balance the construct of the items that affect the student’s choice and performance.
Students’ Writing Quality: Its Coherence and Cohesion
Authors: Farida Alief Noor , Rosyidi Mohamad Ikhwan
Published: October 2019

Students’ writing quality has become the focus of education research nowadays. A good quality writing should fulfil the requirements of coherence and cohesion. Coherence shows how the sentences in the text are arranged which usually follow certain structure, and cohesion shows how they are connected to each other. This study aims to investigate the students’ writing quality in both aspects. Using systemic functional linguistics approach, 10 students’ writing on recount text is analysed. The result of the study reveals how good the students on the fourth semester can write the text and what devices they use to establish the quality. The students can follow the generic structure of recount texts well. However, only 50% has reorientation. In addition, they employ different thematic progressions,
RabGAPs in skeletal muscle function and exercise
Authors: Espelage Lena , Al-Hasani Hadi , Chadt Alexandra
Published: October 2019

The two closely related RabGAPs TBC1D1 and TBC1D4 are key signaling factors of skeletal muscle substrate utilization. In mice, deficiency in both RabGAPs leads to reduced skeletal muscle glucose transport in response to insulin and lower GLUT4 abundance. Conversely, Tbc1d1 and Tbc1d4 deficiency results in enhanced lipid use as fuel in skeletal muscle, through yet unknown mechanisms. In humans, variants in TBC1D1 and TBC1D4 are linked to obesity, insulin resistance and type 2 diabetes. While the specific function in metabolism of each of the two RabGAPs remains to be determined, TBC1D1 emerges to be controlling exercise endurance and physical capacity, whereas TBC1D4 may rather be responsible for maintaining muscle insulin sensitivity, muscle contraction, and exercise. There is growing evidence that TBC1D1 also plays an important role in skeletal muscle development, since it has been found to be associated to meat production traits in several livestock species. In addition, TBC1D1 protein abundance in skeletal muscle is regulated by both, insulin receptor and insulin-like growth factor-1 (IGF-1) receptor signaling. This review focuses on the specific roles of the two key signaling factors TBC1D1 and TBC1D4 in skeletal muscle metabolism, development and exercise physiology.
Los colegiales del pontificio colegio de la Sapiencia de Mallorca durante el siglo XVIII
Authors: Ramis Barceló Rafael
Published: October 2019

Este artículo intenta examinar el perfil de los colegiales del Pontificio Colegio de la Sapiencia de Mallorca durante el siglo xviii. Después de explicar algunos rasgos de la vida colegial, se estudia con especial atención la supresión del Colegio (1773-1777) por el obispo Juan Díaz de la Guerra.
Expression of Heat Shock Protein 70 Is Insufficient To ExtendDrosophila melanogasterLongevity
Authors: Xiao Chengfeng , Hull Danna , Qiu Shuang , Yeung Joanna , Zheng Jie , Barwell Taylor , Robertson R Meldrum , Seroude Laurent
Published: October 2019

It has been known for over 20 years that Drosophila melanogaster flies with twelve additional copies of the hsp70 gene encoding the 70 kD heat shock protein lives longer after a non-lethal heat treatment. Since the heat treatment also induces the expression of additional heat shock proteins, the biological effect can be due either to HSP70 acting alone or in combination. This study used the UAS/GAL4 system to determine whether hsp70 is sufficient to affect the longevity and the resistance to thermal, oxidative or desiccation stresses of the whole organism. We observed that HSP70 expression in the nervous system or muscles has no effect on longevity or stress resistance but ubiquitous expression reduces the life span of males. We also observed that the down-regulation of hsp70 using RNAi did not affect longevity.
Coproducción del paisaje y el campesino de Río Verde de los Montes. Entre territorializaciones y refrains
Authors: Arroyave Arrubla Sergio Iván
Published: October 2019

Basado en observación etnográfica y “lectura del paisaje”, este artículo explora las relaciones de coproducción del paisaje y de los campesinos en Río Verde de los Montes, corregimiento de Sonsón, Antioquia, a partir del análisis de los relatos y las prácticas de los campesinos rioverdeños en el proceso de producción del café. Con base en perspectivas teóricas posthumanas de la geografía y la antropología, reflexiona sobre la realidad cafetera como un ensamblaje en el que los campesinos, otros humanos y otros seres no humanos actúan como entidades interrelacionadas, en procesos de territorialización mediados por las emociones y las valoraciones subjetivas. A partir de estos conceptos y de la categoría refrain,reflexiona sobre las interacciones ‘abastecimiento-cuidado’ y ‘autonomía dependencia’ en la vida de los campesinos, en relación con las plantas de café y su paisaje.
Menstruación, epistemología y etnografía amazónica
Authors: Rosas Diana
Published: October 2019

Este ensayo reflexiona sobre la epistemología en antropología, a partir de las investigaciones antropológicas sobre la menstruación. La perspectiva etnográfica revela cómo se ha abordado este tema y sus consecuencias en la generación de concepciones masculinizadas sobre lo social y lo cultural. El contraste entre diferentes trabajos etnográficos sobre la menstruación me lleva a notar que la crítica de género se cuestiona a sí misma cuando la construcción de conocimiento social se da desde lo corporal, lo material, lo subjetivo y lo emocional. Finalmente, al contrastar los alcances que estas dimensiones cobran en distintos trabajos de sociedades indígenas amazónicas, pongo en evidencia las desigualdades entre los sexos en el marco de relaciones de género enmarcadas en una interconexión entre lo rural y lo urbano, atravesadas por relaciones coloniales.
Trabajos de mierda, una teoría
Authors: Beltrán Caraballo David Andrés
Published: October 2019

En 1985, Bob Black, una de las figuras más visibles de lo que después sería bautizado como anarquismo post-izquierda o post-anarquismo, publicó uno de los libros que más dio que hablar en los círculos libertarios angloparlantes. Era La abolición del trabajo, un breve manifiesto que proponía una idea sugerente, pero sumamente impopular aun en los círculos de izquierda: que el trabajo, asalariado o no, y aun cuando no estuviera amparado por el sistema capitalista, era el origen de los males que aquejan a las sociedades postindustriales. Trabajos de mierda. Una teoría (2018), último libro del siempre controvertido antropólogo anarquista David Graeber, continúa esta tradición crítica que podríamos remontar al menos hasta Paul Lafargue. Pero da un paso al costado para ahondar en un hecho insólito: el capitalismo financiero, incapaz de apegarse a su lógica interna, ha dado lugar a formas de trabajo asalariado mutantes, empleos que desafían los imaginarios clásicos del proletariado explotado que heredamos de las imágenes de la producción fabril decimonónica y de principios del siglo XX.
Media representations of ‘leftover women’ in China
Authors: Yating Yu
Published: October 2019

The term ‘leftover women’, commonly referring to single women older than 27, has been in popular use in Chinese media since 2007. This study investigates how leftover women are linguistically represented in the English-language news media in China by employing a corpus-assisted approach to critical discourse analysis. A specialised corpus of 303 English news articles (i.e. 236,254 words), covering the years between 2007 and 2017, was built for this purpose. Corpus linguistics techniques were employed to quantify the meaning shift units (MSUs) of the lemma leftover WOMAN, and van Leeuwen’s ‘social actors and actions theory’ was applied to inform the classification of MSUs in context. These findings shed light on media representations of leftover women, the contested ideologies emerging from these representations, and how shifting gender politics and identity shapes and is shaped by media in the world’s most populous nation.
Defining and quantifying railway service to plan infrastructure interventions
Authors: Papathanasiou Natalia , Adey Bryan T , Burkhalter Marcel
Published: October 2019

Railway networks are constructed, maintained and developed to provide service to stakeholders. The timing of infrastructure interventions depends on the costs of intervening and the risks of not intervening. Determining the optimal trade-off requires a rigorous definition of the service provided and a way to quantify it. In this paper, such a definition and method of service quantification for the railway infrastructure is provided. Service is defined as a function of how every stakeholder is affected by the changes in the state of the railway infrastructure. It is quantified by estimating the value of each unit of service provided. This definition of service enables the quantification of railway service for all the affected stakeholders when the infrastructure state improves – for example, due to maintenance – or deteriorates – for example, due to fatigue.
Modern Regional Media Discourse Features (on the Example of the Republic of Crimea Printed Press)
Authors: Yegorova Lyudmila
Published: October 2019

The mass media regional discourse is a part of mass media national space, simultaneously it has certain features that reflect regional specifics. These features are systematically displayed by mass media agenda, by the ways of information presentation, interpretation of socially significant events, the priority themes and genres, organization of the dialog with audience, media texts compositional and stylistic design. Newspapers as one of the important for the region printed mass media types concentrate regional mass media discourse attributes. The given research attempts to reconcile the theory of regionality with the real factors and facts of the Crimea media history in its dynamic characteristics displayed in the regional newspapers. It should be noted that integrated analysis of the Crimea regional media discourse in the newspaper segment presents the regions informational worldview in 2013-2015, the period of Crimea sovereignty changing and the peninsula comprisal to the Russian Federation. Regional newspapers are diverse information media, they are obtainable and convenient first of all for the accustomed reader. These characteristics afford ground for regarding the newspaper as a regions informational space core. The newspaper sheet corporality is perceived positively by many people (mainly by the older generation). A regional newspaper has an undeniable advantage - it realizes in its content principle of closeness to the reader living in the particular region. The Republic of Crimea press thematic preferences analysis (eight Crimea-wide and municipal periodicals publications have been analyzed) enables one to designate the following regional 2013-2015 agenda priorities: Crimean deputies and officials work; the Russian Federation, Ukraine and Crimea relations; Crimea legal status; language issue; Crimean economics problems and achievements; ecology; culture; tourism, - which form the public opinion, influence standards of events perception by society.
Media Environment Transformations as an Object of Study of the Theory of Mass Communications
Authors: Kiuru Konstantin , Krivonosov Aleksei
Published: October 2019

Changes in the media environment always lead to changes in the media system, which reflects a different quality of communication. The nature of actors, channels, effects becomes an object of attention of researchers of mass communications. The article deals with the problem of the transformation of the mass communication system, which includes both cinematography and fiction, which can be freely broadcast through various channels, including digital channels. The article considers a new concept, i.e. "communication product". It is understood as a result of professional activity in the field of public and mass communications for the production of a media product, an event product, an advertising and PR product. The media environment is currently characterized by its own messages. They can be built both in traditional newsmaking models (both in journalism and public relations), and in storytelling, narrative (both in advertising and media communications). The article considers such trends in the media environment as the use of hype content, memes and various fakes. The reasons for the emergence of media communications are revealed. There are technological reasons, as modern communication technologies can open access to information to all comers. There are social ones, as new media allows Internet users to actively participate in communications and selectively treat messages they receive. The characteristics of the phenomenon of media communications are distinguished, separating it from journalism, advertising and public relations. The notion of media communications as a process of creation, processing and broadcasting, as well as information exchange in individual, group, mass format through various channels of mass communication (mainly online) is being introduced into scientific circulation through various communication tools - verbal / non-verbal; auditory, audiovisual, visual.
Media Publicity of Tourist Practice: Cultural and Educational Aspects
Authors: Vikhoreva Liya
Published: October 2019

The article considers travel journalism as a factor for enriching the societys intellectual potential with the help of cultural-educational and other information resources. The article studies positive influence of digital environment that ensures timely exchange of intellectual products. The necessity to use innovation resources appearing in travel practice is stated, since the cultural background that is being updated is an important condition to for understanding modern processes occurring in society. The anthropological nature of travel practice defines the need for an extensive user content in the media space of the travel media. The user content is considered as a platform for active authors to express their views, for audience integrity as well as for travel journalists creative writing. The article analyses not only the intellectual potential of travel journalism which is being constantly updated in its information field while realizing cognitive and reflective functions of the travel media. It also analyses the functional integrity of journalism as a factor optimizing the tasks of modern travel practice. The ability of travel media to create a media picture of the world for the audience as a model for further building travel practice is also considered. How travel journalism motivates the audience to create a well-balanced travel content which enriches a persons and different groups intellectual potential with innovative knowledge, axiological and behavioural resources is revealed. The author tries to describe digital travel media as an important source that contributes to the main functions of travel journalism realization relying on using applications and other online services. The research findings enable the author to say that modern travel journalism provides readers and users of online media with an opportunity to participate in creating travel content, to use new resources necessary for social development, to turn these resources into travel practice reality.
Mesangial Index Quantification v2
Authors: Brosius Frank
Published: October 2019

Summary: This protocol describes the procedures for quantifying the percent area of the glomerulus that is PAS stained and is expressed as the mesangial index. Diabetic Complication:
Creatinine Clearance by HPLC v2
Authors: Sharma Kumar
Published: October 2019

Summary: This protocol describes the procedures for collecting, preparing and performing the DiaComp Creatinine Clearance assay via high performance liquid chromatography (HPLC). Diabetic Complication:
Western Blot (semi-dry) v1
Authors: Behle Anna , Wiegard Anika
Published: October 2019

Protocol for semi-dry Western Blot
En face preparation and quantification of aortic surface area covered by atherosclerotic lesions v2
Authors: Breslow Jan , Teupser Daniel
Published: October 2019

Summary: This protocol describes how the DiaComp members prepare the En Face staining for atherosclerotic lesions quantification. Diabetic Complication:
Isolation of rodent eyes for analysis of diabetic retinopathy v2
Authors: Kern Timothy
Published: October 2019

Summary: This protocol describes the procedure used by the DiaComp to isolate rodent eyes to phenotype for Diabetic Retinopathy. Diabetic Complication:
PILOT-SCALE METHANE DEGRADATION BIOCOVER AT OPERATING LANDFILL
Authors: Sholokhova A. , Tsibernaja O. , Mykhaylenko V. , Burlakovs J. , Kuusemets V. , Pehme K.-M. , Kriipsalu M.
Published: October 2019

A landfill is a large bioreactor, in the body of which landfill gases are generated due to anaerobic degradation of organic material. According to European legislation, the emission of methane, one of the landfill gases, should be kept to a minimum as methane is a greenhouse gas and has a significant impact on our climate. With large volumes, methane can be used for energy production, but if the collection is uneconomic, an attractive option would be to cover the landfill with a bioactive layer to degrade methane in-situ. In operational Uikala sanitary landfill, Estonia, where active gas collection system exists, it was found that uncaptured gas could be degraded in bioactive cover layer. To check whether such cover layer could be built from fine fraction after mechanical biological treatment (MBT), two experimental cells were constructed (0-20 mm and 0-40 mm fractions). The paper presents the design of experimental cells, a description of materials for construction and construction process, and preliminary results. Measurement system was installed in both cells: gas wells at eight depths and on three locations on surface. Three-level lysimeters were installed to determine water balance. Research is planned for two years with monthly gas sampling. The objective of the work is proving which of the MBT fractions, 0-20 or 0-40 mm, function better for methane degradation. Confirmation of the methane degradation efficiency in fine MBT fraction is important not only from the ecological point of view. The use of a fine fraction as a material for methane degradation layer would reduce the cost of processing this fraction and become a good example to a circular economy since the landfill would be recultivated using its own resources.
THE EFFECT OF MODEL BASED LEARNING ON THE ACADEMIC SUCCESS AND CONCEPTUAL UNDERSTANDING OF MIDDLE-SCHOOL STUDENTS ON THE PARTICULATE NATURE OF MATTER
Authors: Ergün Ayşegül , Sarıkaya Mustafa
Published: October 2019

The purpose of this research
is to determine the effect of learning based on models on the academic success
and conceptual understanding of middle-school students on the particulate
nature of matter. In the research, the single group pretest-posttest semi
experimental design which is one of the quantitative research methods was used.
The sample of the research consists of a total of 134 students 34 of whom are
5th grade, 32 are 6th grade, 33 are 7th grade and 35 are 8th grade students
from state middle-schools in a city in the Aegean Region of Turkey receiving
education in the 2009-2010 academic year, who were selected with the simple
random sampling method. The data of the research were collected through the
‘Evaluation Test for the Particulate Nature of Matter’ (ETPNM) and ‘Conceptual
Test for the Particulate Nature of Matter’ (CTPNM). In the analysis of data,
the t test was used for the related samples. As a result of the research, it
was determined that model based learning has a positive effect on the academic
success and conceptual understanding of middle-school students on the subject
of particulate nature of matter. In addition, it was determined that the effect
of model based learning on conceptual understanding is more positive compared
to its effect on academic success. In the light of the research findings, the
importance of model based learning in the teaching of abstract concepts was
underlined and suggestions were made to the researchers and science
teachers.
Percepción en aspectos laborales y su aporte para ambientes de trabajo seguro
Authors: Galarza Iglesias Ana Milena
Published: October 2019

El sistema de gestión de la seguridad y salud en el trabajo (SG-SST)1 orienta sus acciones a anticipar, reconocer, evaluar y controlar los riesgos que puedan afectar la seguridad y salud de los trabajadores, de tal manera que se logre prevenir las lesiones y enfermedades causadas por las condiciones de trabajo. Como parte del anticipar y reconocer los riesgos en el área laboral, se ha logrado identificar que los accidentes y enfermedades laborales, más allá del espacio y tiempo propios del trabajo, tienen origen multicausal, abordando de manera integral el contexto, la actividad y el trabajador. Es así como, desde la mirada del trabajador, la percepción del riesgo está tomando cada vez más fuerza al reconocer que de ella depende, en gran parte la forma en que se asuman los comportamientos seguros que se traducen en ambientes de trabajo seguros. La percepción desde la psicología, es concebida como un proceso cognitivo que lleva a una mirada de la realidad de una manera individual y en el caso de la percepción del riesgo se tiene varios enfoques, uno de ellos, centrado en aspectos psicosociales abordando la forma en que un trabajador identifica o no un riesgo a partir de sus creencias, historia de vida y experiencia personal.1
Success Factors for the Implementation of Big Data as a New Economic Resource
Authors: Karlik A. E. , Platonov V. V. , Tihonova M. V. , Jakovleva E. A.
Published: October 2019

Purpose: it is to determine the most important factors that condition the ability of an enterprise to successfully implement the big data as a new economic resource.

Methods: the methodological foundation of this research is the analytical framework of the resource-based view, which is applied to highlight the most important factors of the organizational capacity for the implementation of big data into economic activity. These factors are classified by blocks of internal factors of the organizational capacity in two hierarchical levels (organizational and individual). The study is based on the primary information obtained through a survey in the form of semi-structured interviews of managers and experts of the companies pioneering in implementation of big data.

Results: a based on the analysis of scientific publications in accordance with positive and normative approaches to the understanding of big data, the concept of "big data" as an economic resource is developed. Its attributes are identified with emphasis on the heterogeneity of big data which allows filtering information about the subsystems of a complex economic system representing the modern enterprise. This information cannot be obtained from traditional sources of economic data. By systematizing the primary information on the projects of implementation of big data into economic activity by foreign companies by applying the analytical framework of the resource-based view, the key conceptual factors of the organizational capacity for the use of big data and relationship among significant factors have been identified. These key internal factors emerge as a result of the revolution in information technology and represent the necessary condition to ensure the transformation of the analytical procedures for decision making at the corporate level based on big data. The study reveals that sufficient condition represents a system of intangible resources and organizational capabilities, the most important of which is the capability to coordinate data processing and analysis. This capability, in a system with the other key organizational level capabilities, enables the integration of analytical and data processing technologies, on the one hand, and individual competencies of employees, on the other.

Conclusions and Relevance: the implications of this study are aimed at researchers studying the problems of the information and networked economy, and practitioners of the Russian companies that are implementing or consider the implementation of the big data into economic activity. In business perspective, the most important implication of this research is that effective implementation of big data is not a technical challenge but an organizational and economic one. The basis of the organizational capacity for the implementation of big data is information resources, human resources and corporate culture and systems (technologies) for data processing and analysis.
UNA REFLEXION BIOÉTICA SOBRE LOS PROCESOS DE ENSEÑANZA APRENDIZAJE EN ODONTOLOGIA
Authors: Rangel Galvis María Clara
Published: October 2019

En este trabajo se reflexiona sobre la importancia de la enseñanza de la bioética en el proceso de formación de estudiantes de Odontología. En un primer momento se presenta una revisión de la literatura que hace referencia a aspectos relacionados con la importancia de la formación bioética en Odontología y en un segundo momento se revisa en la literatura cómo se lleva a cabo la formación clínica en Odontología en relación con la docencia asistida en la que interactúan odontólogos en calidad de profesores guían el aprendizaje del estudiante en un paciente. En tercer lugar, se relatarán algunas situaciones que se suscitan durante este periodo de formación, en relación con las tensiones y conflictos desde los que se configuran dilemas en la relación estudiante-paciente-docente en las prácticas clínicas formativas en odontología. El análisis se hace teniendo presente la normatividad legal vigente en Colombia en materia de educación superior, pertinente a la enseñanza en odontología bajo la modalidad de convenios docencia-servicio, la fundamentación y la apropiación de los conceptos de la ética normativa y la bioética para reflexionar acerca de la necesidad de estructurar propuestas más integradoras desde la bioética que permitan fundamentar, debatir y conciliar acerca de las problemáticas que se originan en los ámbitos académicos y docente-asistenciales.
Hydrothermal Synthesis and Crystal Structure of Zn(II) Coordination Polymer with the Rigid 4,4'-azobispyridine
Authors: ARSLAN BİÇER Figen
Published: October 2019

The new metal complex with phenylsuccinic acid (H2psa)
and 4,4'-azobispyridine (4,4’-abpy), {[Zn(psa)(H2O)3(µ-4,4'-abpy)](H2O)}n
(I), was synthesized by hydrothermally process. The
structure of I has been characterized
by IR spectra, elemental analysis, and single crystal X-ray diffraction. Single
crystal X-ray analysis reveals that the psa ligand O-coordinated to the Zn(II)
ion and distorted octahedral geometry of Zn(II) ion is completed by bridging
4,4’-abpy and three aqua ligands.
Valoración del mecanismo de terminación anticipada en los contratos de concesión 4G en Colombia
Authors: Giraldo Alejandro
Published: October 2019

La terminación anticipada de asociaciones público-privadas (APP) suele ocurrir en cualquier momento durante la vida del proyecto y ocasiona grandes costos para las partes. Particularmente, las concesiones viales se enfrentan a un alto riesgo de demanda. En general, los contratos de concesión vial incorporan un mecanismo de compensación en caso de terminación anticipada. No obstante, la técnica tradicional del flujo de caja descontado (FCD), utilizada para valorar proyectos de infraestructura, no captura la irreversibilidad de la inversión, la incertidumbre y los mecanismos de compensación por riesgo que permiten tomar acciones a las partes intervinientes de un contrato de concesión. La terminación anticipada de una concesión vial puede ser valorada como el derecho que tiene el concesionario a abandonar la ejecución del proyecto. El objetivo del presente documento es valorar el mecanismo de terminación anticipada de una concesión vial como un activo contingente, implementando la teoría de las opciones reales, donde el valor de la opción de abandono depende del riesgo de demanda. La metodología de valoración es aplicada a un estudio de caso real del programa de la Cuarta Generación de Concesiones Viales del Gobierno de Colombia. La valoración de los mecanismos de terminación anticipada puede ayudar a comprender de manera ex-ante los riesgos a los cuales se enfrentan las partes pública y privada de un contrato de concesión.
Valoración de opciones reales con múltiples incertidumbres mediante modelos k dimensionales
Authors: Zapata Carlos
Published: October 2019

El modelo binomial presenta un conjunto de propiedades que lo convierten en el enfoque adecuado para resolver el problema de valoración en el campo de las opciones reales, mediante una aplicación fácil y práctica. Cabe resaltar que esto solo es posible en el contexto donde se presenta una única fuente subyacente de incertidumbre. Sin embargo, su adopción puede ser limitada para aquellas inversiones que cuentan con múltiples incertidumbres, dado que su interacción debería incorporarse al proceso de valoración. Como respuesta, la teoría ha propuesto enfoques de valoración que permiten representar las diferentes fuentes de incertidumbre mediante una estimación consolidada de la volatilidad, tal es el caso del enfoque Marketed Asset Disclaimer (MAD) desarrollado por Copeland y Antikarov (2001). Como alternativa, se puede dar un tratamiento individual a cada incertidumbre. En este contexto, se encuentran diferentes propuestas que extienden el modelo binomial a un contexto k-dimensional, donde se incorpora la dinámica propia de cada incertidumbre, así como sus correlaciones. Para lograr esta aplicación, se requiere una aproximación al proceso estocástico k-dimensional. Este trabajo presenta una revisión sucinta de los diferentes métodos propuestos en este contexto, así como sus bondades, limitaciones y algunos enfoques alternativos.