bluuebunny/crossref_metadata_2025 huggingface dataset:
On the convergence of difference schemes for the generalized BBM–Burgers equation
Authors: Berikelashvili Givi , Mirianashvili Manana
Published: November 2018

A three-level finite difference scheme is studied for the initial-boundary value problem of the generalized Benjamin–Bona–Mahony–Burgers equation. The obtained algebraic equations are linear with respect to the values of the desired function for each new level. The unique solvability and absolute stability of the difference scheme are shown. It is proved that the scheme is convergent with the rate of order

k
-
1

{k-1}

when the exact solution belongs to the Sobolev space

W
2
k

⁢

(
Q
)

{W_{2}^{k}(Q)}

,

1
<
k
≤
3

{1<k\leq 3}

.
Boys – the Disadvantaged Gender?
Authors: Bereswill Mechthild
Published: November 2018

The paper is focused on a powerful discursive configuration: the diagnosis that boys are nowadays tremendously suffering from being de-privileged in relation to girls. The hermeneutic analysis of the dominant patterns of interpretation that are characteristic for this dramatized discourse-configuration shows how the gender order of the modern society is constructed as instable and seriously endangered. The narrative pattern of the boy being fundamentally disadvantaged – not least by lacking male interfaces – is in this paper discussed as a ‘supportive narrative’ for (re)stabilizing difference and distinction within a clearly structured gender order. However, the open question will remain as to whether the overdetermination that structures the discourse as a whole points in the direction of a persisting or a changing social and symbolic order.
Federal Disputes in the German Reich under the Weimar Constitution: Lessons in Dispute Settlement for the Kingdom of the Netherlands
Authors: Hoogers Gerhard , Karapetian Gohar
Published: November 2018

Although the German Bundesverfassungsgericht has become one of the most famous constitutional courts in the world, there is an older, less ambitious but nonetheless interesting tradition of constitutional review in Germany. In this article an analysis will be undertaken of the functioning and case law of the Staatsgerichtshof für das deutsche Reich (RStGH), especially its case law on federal disputes, to see whether this half-forgotten court of the Weimar years could be an interesting role model for the Kingdom of the Netherlands, where the discussion on a new constitutional arrangement for the resolution of federal disputes has been paralysed for years.
Multimodal Algebra Learning: From Math Manipulatives to Tangible User Interfaces
Authors: Reinschlüssel Anke , Alexandrovsky Dmitry , Döring Tanja , Kraft Angelie , Braukmüller Maike , Janßen Thomas , Reid David , Vallejo Estela , Bikner-Ahsbahs Angelika , Malaka Rainer
Published: November 2018

While manipulatives have played an important role in children’s mathematics development for decades, employing tangible objects together with digital systems in the classroom has been rarely explored yet. In a transdisciplinary research project with computer scientists, mathematics educators and a textbook publisher, we investigate the potentials of using tangible user interfaces for algebra learning and develop as well as evaluate a scalable system for different use cases. In this paper, we present design implications for tangible user interfaces for algebra learning that were derived from a comprehensive field study in a grade 9 classroom and an expert study with textbook authors, who also are teachers. Furthermore, we present and discuss the resulting system design.
Analysing Willerding’s formula for solving the planar three point resection problem
Authors: Heindl Gerhard
Published: November 2018

The main mathematical problem in the planar three point resection problem of surveying is to find a necessary and sufficient condition that a point on a plane is uniquely determined if the directions from that point to three given points are known only up to an unknown offset. It will be shown in this paper that such a condition is the applicability of Willerding’s formula for computing the point in question, and that this condition is equivalent to the well-known necessary condition that the four considered points are not located on a circle or a line. Because of this result, the easy evaluation and the short derivation of Willerding’s formula, it can be expected, that this formula will be widely used in surveying, and also for autonomous robot localization.
The Malleability of Truth and Language in Chay Yew’s Porcelain and A Language of Their Own
Authors: Ha Quan-Manh , Vigesaa Andrew
Published: November 2018

In Asian American literature and drama, the pursuit of identity was at the forefront of discussion for much of the twentieth century. More and more frequently Asian American voices from the LGBTQ community have addressed intersectionality in established narratives. As issues of identity and intersectionality converge, postmodernity becomes a useful lens through which to examine the elements of this task. In Chay Yew’s plays entitled Porcelain and A Language of Their Own, the status of Asian identities in the Western world is not given a sure footing, but rather it is placed in a state of confusion. In Porcelain, this confusion stems from the tension between objective truth and the postmodern phenomenon of media-fueled panic. In A Language of Their Own, similar confusion arises between the subjective and performative conveying of meaning in language. These contrasting elements serve to highlight the postmodern search for identity among Asian men living in the Western world, where the complexities of identity are compounded by the subjectivity of truth.
Response surface methodological approach for optimizing the removal of cadmium from aqueous solutions using pistachio residues biochar supported/non-supported by nanoscalezero-valent iron
Authors: Saffari Mahboub
Published: November 2018

A three-level Box–Behnken model (BBM) under response surface methodology (RSM) was used to optimize the removal of cadmium (Cd) ion by pistachio residues biochar (PRB) and PRB supported by nanoscale zero-valent iron (PRB-nZVI) from aqueous solutions. Optimization experiments were carried out by evaluation of the effect of four variables (initial Cd concentration, initial solution pH, adsorbent dosage, and contact time) at three levels (high, medium, and low), and one category contained two variables (PRB and PRB-nZVI). For this purpose, a total of 58 experimental runs were set and the experimental data were fitted to the empirical second-order polynomial model of a suitable degree. The physical and chemical structure results of the adsorbents confirmed the formation of nZVI (with diameters ~35 nm) on the PRB surface. The results showed that the new composite of biochar (PRB-nZVI) exhibited higher Cd removal efficiency compared with PRB from aqueous solutions. The existence of functional groups and nZVI on the surface of PRB-nZVI could be better than PRB for Cd removal in aqueous solutions by the processes of sorption, precipitation, and co-precipitation. Numerical optimization revealed that the optimum removal (96.58%) was obtained at an initial Cd concentration of 25.99 mg L−1 (pH 6.58), adsorbent dose (PRB-nZVI) of 0.55 g L−1, and contact time of 34.11 min, with desirability of 1. Based on the results, it is recommended that PRB-nZVI can be effectively used for the removal of Cd from a contaminated aqueous solution with varying chemical and physical conditions.
Dynamical analysis of a predator-prey interaction model with time delay and prey refuge
Authors: Tripathi Jai Prakash , Tyagi Swati , Abbas Syed
Published: November 2018

In this paper, we study a predator-prey model with prey refuge and delay. We investigate the combined role of prey refuge and delay on the dynamical behaviour of the delayed system by incorporating discrete type gestation delay of predator. It is found that Hopf bifurcation occurs when the delay parameter τ crosses some critical value. In particular, it is shown that the conditions obtained for the Hopf bifurcation behaviour are sufficient but not necessary and the prey reserve is unable to stabilize the unstable interior equilibrium due to Hopf bifurcation. In particular, the direction and stability of bifurcating periodic solutions are determined by applying normal form theory and center manifold theorem for functional differential equations. Mathematically, we analyze the effect of increase or decrease of prey reserve on the equilibrium states of prey and predator species. At the end, we perform some numerical simulations to substantiate our analytical findings.
Structural aspects of heterooligonuclear platinum clusters – distortion isomers
Authors: Melník Milan , Mikuš Peter , Mikulová Mária Bodnár
Published: November 2018

This review covers 15 clusters of the compositions Pt3Re2, Pt2Os3, Pt3AgAu, Pt3Ir3, Pt2M4 (M=Ag or Pd), PtM5 [M=Ru (×2) or Os], Pt3Os4, Pt6Au2, Pt2Ru6, Pt3Ru6, Pt2Ru8, and PtAu9. Each of the cluster contains two crystallographically independent molecules that differ mostly by degree of distortion and are classical examples of distortion isomerism. Their structures are very complex. The inner coordination spheres about the metal atoms (Pt and M) are very complex as well. The clusters are rich in metal-metal bond distances with the shortest being 2.573 Å (Pt-Au), 2.615 (Pt-Pt), and 2.673 Å (Ru-Ru).
“Atmos-fear”: A psycho-semiotic analysis of messages in New York everyday life
Authors: Tateo Luca
Published: November 2018

We live in societies emphasizing security and its complementary side of fear. In this work, I analyze the peripheral messages disseminated in the urban environment, whose function is that of regulating human and collective conduct through orienting specific forms of affective meaning-making. According to the perspective of Cultural Psychology of Semiotic Dynamics, affect and cognition work always together. Affect has the primacy in the relationship with the world and on top of affective distinctions we build conceptual distinctions. Thus, I describe a type of semiotic process I have called “atmos-fear,” that works through the production of empty representamen that frames meaning. The concept of “atmos-fear” could be fruitfully developed to understand phenomena of politics, communication and construction of the Other in contemporary societies, where the dialogical relationship between security and fear is at stake.
Flexible HAR model for realized volatility
Authors: Audrino Francesco , Huang Chen , Okhrin Ostap
Published: November 2018

The Heterogeneous Autoregressive (HAR) model is commonly used in modeling the dynamics of realized volatility. In this paper, we propose a flexible HAR(1, . . . , p) specification, employing the adaptive LASSO and its statistical inference theory to see whether the lag structure (1, 5, 22) implied from an economic point of view can be recovered by statistical methods. The model differs from Audrino and Knaus (2016) [Audrino, F. and S. D. Knaus. 2016. “Lassoing the HAR model: A model selection perspective on realized volatility dynamics.” Econometrics Review 35: 1485–1521]. where the authors apply LASSO on the AR(p) model, which does not necessarily lead to a HAR model. Adaptive LASSO estimation and the subsequent hypothesis testing results fail to show strong evidence that such a fixed lag structure can be recovered by a flexible model. We also apply the group LASSO and related tests to check the validity of the classic HAR, which is rejected in most cases. The results justify our intention to use a flexible lag structure while still keeping the HAR frame. In terms of the out-of-sample forecasting, the proposed flexible specification works comparably to the benchmark HAR(1, 5, 22). Moreover, the time-varying model combinations show that when the market environment is not stable, the fixed lag structure (1, 5, 22) is not particularly accurate and effective.
Extremes for multivariate expectiles
Authors: Maume-Deschamps Véronique , Rullière Didier , Said Khalil
Published: November 2018

Multivariate expectiles, a new family of vector-valued risk measures, were recently introduced in the literature.
[22].
Here we investigate the asymptotic behavior of these measures in a multivariate regular variation context. For models with equivalent tails, we propose an estimator of extreme multivariate expectiles in the Fréchet domain of attraction case with asymptotic independence, or for comonotonic marginal distributions.
Update of the History of ASTM Committee D18 on Soil and Rock (2006–2015)
Authors: Edelen William F.
Published: November 2018

This update on the activities of the committee meetings of ASTM Committee D18 on Soil and Rock covers the years from 2006 through 2015. The purpose of the this update is to highlight the activities of the biannual meetings, winter and summer, of Committee D18, to list members’ awards, and to indicate those members who have deceased during this period. The paper was reviewed by Jeanne Asquith (3Rd Rock LLC, East Aurora, NY) and Ron Holsinger (retired).
Innover par le passé
Authors: Hallegatte Damien
Published: November 2018

Le présent article avance que le dogme de l’innovation, qui implique une mise en obsolescence de plus en plus rapide des produits, pourrait se retourner contre les organisations qui pensent que les consommateurs croient encore fortement au progrès. Nonobstant les questions cruciales relatives à l’environnement, c’est peut-être le basculement de notre rapport collectif à notre passé qui pourrait sonner le glas de l’innovation, telle que nous la connaissons aujourd’hui, comme voie royale pour atteindre les objectifs des organisations. Il semble qu’au XXIe siècle, la voie de l’avenir pour les organisations se trouve en partie dans la réappropriation du passé.
A Proposed Mechanism for Spontaneous Transitions between Interictal and Ictal Activity
Authors: Jacob Theju , Lillis Kyle P. , Wang Zemin , Swiercz Waldemar , Rahmati Negah , Staley Kevin J.
Published: November 2018

Epileptic networks are characterized by two outputs: brief interictal spikes and rarer, more prolonged seizures. Although either output state is readily modeledin silicoand induced experimentally, the transition mechanisms are unknown, in part because no models exhibit both output states spontaneously.In silicosmall-world neural networks were built using single-compartment neurons whose physiological parameters were derived from dual whole-cell recordings of pyramidal cells in organotypic hippocampal slice cultures that were generating spontaneous seizure-like activity.In silico, neurons were connected by abundant local synapses and rare long-distance synapses. Activity-dependent synaptic depression and gradual recovery delimited synchronous activity. Full synaptic recovery engendered interictal population spikes that spread via long-distance synapses. When synaptic recovery was incomplete, postsynaptic neurons required coincident activation of multiple presynaptic terminals to reach firing threshold. Only local connections were sufficiently dense to spread activity under these conditions. This coalesced network activity into traveling waves whose velocity varied with synaptic recovery. Seizures were comprised of sustained traveling waves that were similar to those recorded during experimental and human neocortical seizures. Sustained traveling waves occurred only when wave velocity, network dimensions, and the rate of synaptic recovery enabled wave reentry into previously depressed areas at precisely ictogenic levels of synaptic recovery. Wide-field, cellular-resolution GCamP7b calcium imaging demonstrated similar initial patterns of activation in the hippocampus, although the anatomical distribution of traveling waves of synaptic activation was altered by the pattern of synaptic connectivity in the organotypic hippocampal cultures.

SIGNIFICANCE STATEMENTWhen computerized distributed neural network models are required to generate both features of epileptic networks (i.e., spontaneous interictal population spikes and seizures), the network structure is substantially constrained. These constraints provide important new hypotheses regarding the nature of epileptic networks and mechanisms of seizure onset.
Conidial Morphogenesis and Septin-Mediated Plant Infection Require Smo1, a Ras GTPase-Activating Protein in Magnaporthe oryzae
Authors: Kershaw Michael J , Basiewicz Magdalena , Soanes Darren M , Yan Xia , Ryder Lauren S , Csukai Michael , Oses-Ruiz Miriam , Valent Barbara , Talbot Nicholas J
Published: November 2018

The pathogenic life cycle of the rice blast fungus Magnaporthe oryzae involves a series of morphogenetic changes, essential for its ability to cause disease. The smo mutation was identified > 25 years ago, and affects the shape and development of diverse cell types in M. oryzae, including conidia, appressoria, and asci. All attempts to clone the SMO1 gene by map-based cloning or complementation have failed over many years. Here, we report the identification of SMO1 by a combination of bulk segregant analysis and comparative genome analysis. SMO1 encodes a GTPase-activating protein, which regulates Ras signaling during infection-related development. Targeted deletion of SMO1 results in abnormal, nonadherent conidia, impaired in their production of spore tip mucilage. Smo1 mutants also develop smaller appressoria, with a severely reduced capacity to infect rice plants. SMO1 is necessary for the organization of microtubules and for septin-dependent remodeling of the F-actin cytoskeleton at the appressorium pore. Smo1 physically interacts with components of the Ras2 signaling complex, and a range of other signaling and cytoskeletal components, including the four core septins. SMO1 is therefore necessary for the regulation of RAS activation required for conidial morphogenesis and septin-mediated plant infection.
Desigualdad salarial asociada al uso de las TIC en México: un análisis por ocupaciones
Authors: Torres García Aldo Josafat , Ochoa adame Gloria Lizeth
Published: November 2018

El documento muestra un conjunto de estimaciones econométricas, con el objetivo de probar que el uso de las tecnologías de la información (TIC) en el trabajo tiene implicaciones en las diferencias salariales en México. Se estimaron ecuaciones salariales por tipo de ocupación y se corrigió el sesgo de selección. Los resultados verifican la existencia de disparidad salarial a favor de los individuos con habilidades informáticas en el trabajo, así como para aquellos quienes tienen experiencia en el uso de una computadora, la magnitud del premio a la habilidad computacional varía dependiendo de la ocupación de la cual se trate.
Multinational firms and the creation of technological linkages in Italy
Authors: Cozza Claudio , Zanfei Antonello
Published: November 2018

Using empirical evidence from the Italian R&D survey, we assess the ability of multinational firms in setting-up technological linkages (Extra-muros R&D and R&D cooperation). We have found that Italian multinationals are more prone to perform Extra-muros R&D, while foreign multinationals are better at developing R&D cooperation. However, when selecting only the linkages with local counter-parts, we find that foreign multinationals have no advantage vis-à-vis Italian firms; while multinationals still have some advantages in setting-up R&D cooperation with local universities. Results suggest that foreign multinationals can generally exploit “economies of common governance” when setting-up technical linkages, but they face relative disadvantages in terms of embeddedness in local systems.
Integración espacial en el mercado de la guayaba pera en el Valle del Cauca
Authors: Alonso Cifuentes Julio César , Bonilla Lopez María Fernanda
Published: November 2018

Por medio de los datos de frecuencia semanal de los precios mayoristas de la guayaba pera durante el período 2012-2015, este estudio explora la integración espacial del mercado de esta fruta tropical en el departamento del Valle del Cauca, Colombia. Mediante el empleo de las pruebas de raíces unitarias se encuentra que las series de los precios son I (1). Asimismo, con la prueba de cointegración de Johansen se determina que los cuatro mercados estudiados en el Valle del Cauca se encuentran integrados espacialmente. Además, se encuentra que Cali es el mercado líder.
Estimación de la migración de votantes y ubicación de coaliciones políticas usando máxima entropía generalizada. Evidencia en Chile (2001-2013)
Authors: Troncoso Sepúlveda Ricardo Andrés , Parés Bengoechea Claudio
Published: November 2018

El objetivo de este artículo es estimar los patrones de migración de votantes y la ubicación de coaliciones en un espacio político bidimensional, en el marco de las elecciones parlamentarias en Chile entre el 2001 y el 2013. Para tal propósito, se utiliza el método de máxima entropía generalizada que permite estimar patrones de migración de votos desde datos electorales agregados. Los resultados muestran altas tasas de volatilidad de votantes en las coaliciones, dejan en evidencia el rol de los “no votantes” y señalan cierta coherencia en la ubicación de las coaliciones políticas de un período electoral a otro.
La spirale du déclassement. Essai sur la société des illusions, de l. Chauvel, 2016. Paris: Seuil
Authors: Urteaga Eguzki
Published: November 2018

Louis Chauvel acaba de publicar su último libro titulado La spirale du déclassement. Essai sur la société des illusions (La espiral de la desclasificación. Ensayo sobre la sociedad de las ilusiones) en la editorial Seuil. Conviene recordar que este sociólogo galo es catedrático de Sociología en la Universidad de Luxemburgo, investigador asociado en el Observatorio Sociológico del Cambio de Sciences Po París, miembro honorario del Instituto Universitario de Francia y senior scholar en Luxembourg Income Study (LIS). Entre sus obras más relevantes es preciso mencionar Les classes moyennes à la dérive (2006) y Le destin des générations (2010).Como lo indica el propio Chauvel, su última obra parte del siguiente diagnóstico:el incremento de las desigualdades, [que resulta] evidente si consideramos el rol [desempeñado por el] patrimonio, conduce a una parte de las clases medias y de las nuevas generaciones a seguir las clases populares en la senda del empobrecimiento, provocando una espiral general de desclasificación (p. 9).Este proceso condena, a plazo, el ideario social de una "civilización de clase media" que confía en su capacidad para transmitir a las generaciones siguientes un mundo mejor (p. 9). El autor desea comprender los mecanismos de esta desclasificación, además de poner de manifiesto el sentido y las consecuencias de la reconstitución de la "vertical del poder socioeconómico" que se había atenuado durante el período de rápido crecimiento de la sociedad salarial entre 1945 y 1975. Trata de poner en evidencia los elementos constitutivos de la "repatrimonialización", "ese proceso de reconstitución de la acumulación de riqueza que radicaliza las diferencias entre los herederos protegidos por sus esperanzas patrimoniales y los simples poseedores de títulos académicos [desvalorizados] en el mercado laboral" (p. 10). De hecho, la fractura intergeneracional no se opone a las desigualdades sociales, puesto que ambos fenómenos se refuerzan mutualmente para hacer sistema.
De la formación inicial al trabajo docente: Comprensión de la trayectoria
Authors: Sánchez-Sánchez Gerardo Ignacio , Jara-Amigo Ximena Elizabeth
Published: November 2018

El presente artículo explora la comprensión de las experiencias pedagógicas en el contexto de la práctica profesional por parte de 32 docentes de distintas titulaciones. Los resultados evidencian una imagen de la docencia como un encuentro humano, no solo técnico, entre sujetos, contextos y demandas. Se comprende como una actividad dotada de complejidad en tanto tarea humana, y un proceso que se torna visible en el espacio de la práctica, la cual se constituye en fuente de aprendizaje y de crisis productiva. Se adoptó el enfoque cualitativo a partir de la modalidad de estudio de caso interpretativo con aplicación de entrevistas semiestructuradas y una estrategia de discusión de resultados sustentada en el análisis de contenido. La investigación se desarrolló en el campus regional de una universidad, ubicada a 200 millas al sur de Santiago de Chile. El estudio abre perspectivas de diálogo en el contexto regional, susceptibles de enriquecer la formación inicial docente, al entender que no existen modelos ideales de profesorado al margen de los contextos o marcos de actuación que regulan el ejercicio de la docencia, por lo que se hace necesario sintonizar los modelos teóricos de formación con los límites y posibilidades que ofrece la práctica.
Aportes a la comprensión de la doble excepcionalidad: Alta capacidad con trastorno por déficit de atención y alta capacidad con trastorno del espectro autista
Authors: Conejeros-Solar María Leonor , Gómez-Arizaga María Paz , Sandoval-Rodríguez Katia , Cáceres-Serrano Pablo Andrés
Published: November 2018

En la década de los 80 surge un nuevo concepto en educación -doble excepcionalidad- que hace referencia a una paradoja entre una alta habilidad y una dificultad que impactan en el desarrollo y aprendizaje de niños, niñas y jóvenes.  El objetivo del presente artículo es aportar a la comprensión de esta temática poco abordada en el contexto latinoamericano y a su estado de desarrollo para que profesionales que se vinculan al ámbito educativo la visibilicen e incorporen a sus prácticas pedagógicas. Se realizó una búsqueda sistemática en diversas bases de datos electrónicas y en revistas especializadas en el área de alta capacidad y se identificaron variables cognitivas y socioafectivas a la base de la condición de alta capacidad con trastorno por déficit de atención y alta capacidad con trastorno del espectro autista. Se incorporaron, además, aspectos relativos a identificación y apoyos educativos. Como principales temáticas se visualizan la complejidad en la comprensión de la doble condición, así como la necesidad de procesos de identificación e intervención comprensivos que reconozcan las características particulares de cada dualidad. Se recogen y comentan los principales desafíos tanto para su identificación como para su abordaje psicoeducativo y se plantean los aspectos que requieren de mayor investigación para avanzar en el estudio de esta temática. Es responsabilidad de los grupos profesionales de la educación visibilizar y atender a este estudiantado que convive con la incomprensión personal y social en entornos educativos que no los reconocen ni distinguen sus características.
La metacognición en el aprendizaje de una segunda lengua: Estrategias, instrumentos y evaluación
Authors: Bonilla Traña Mariel , Díaz Larenas Claudio
Published: November 2018

El aprendizaje de una segunda lengua (de ahora en adelante, L2), como es el caso del inglés, se ha convertido en una necesidad de primer orden en el mundo actual. El carácter complejo que posee el proceso de aprendizaje de una L2 se debe a la gran cantidad de variables que confluyen y que inhiben o favorecen el aprendizaje. La metacognición y el uso de estrategias metacognitivas constituyen, en este sentido, mecanismos relevantes para el aprendizaje de una L2. El presente artículo discute el concepto de metacognición, por una parte, desde los modelos y estrategias existentes, y, por otra, desde los instrumentos y herramientas de entrenamiento que se utilizan para el monitoreo de los procesos cognitivos de los sujetos.
El portafolio electrónico como instrumento de evaluación y como estrategia de autorregulación en la formación de profesionales en música
Authors: Capistrán Gracia Raúl Wenceslao
Published: November 2018

El estudiantado de música requiere de estrategias de autoevaluación no solo para determinar si ha mejorado, sino también para seleccionar las estrategias de práctica más adecuadas en caso de que no haya mejoría y lograr vencer los retos técnico-musicales. Por su parte, el personal docente a cargo debe contar con instrumentos de evaluación válidos y confiables que le permitan llevar a cabo una valoración objetiva, realista y justa del desempeño estudiantil. En este artículo, el autor ofrece una revisión a profundidad de la bibliografía sobre cuatro estrategias de autoevaluación de alto nivel metacognitivo y propone el uso del portafolio electrónico desde dos perspectivas: a) como estrategia de autorregulación que ayude al estudiantado a asumir una mayor responsabilidad por su propio aprendizaje, al monitorizar y autoevaluar sus esfuerzos a través de la recopilación de evidencias que le permiten reflexionar y tener una percepción más realista de sus logros; y b) como instrumento que contribuye para que el maestro o maestra lleve a cabo una evaluación más integral de los avances estudiantiles. Se espera que la información que aquí se proporciona fomente una práctica musical más holística y efectiva, y una evaluación más integral.
LA ESCOLARIDAD SECUNDARIA OBLIGATORIA EN ARGENTINA. POLÍTICA PARA LA INCLUSIÓN SOCIO-EDUCATIVA EN LA ESCUELA
Authors: Bocchio Maria Cecilia , Miranda Estela Maria
Published: November 2018

En Argentina la Escolaridad Secundaria Obligatoria (ESO) se enmarca en la Ley de Educación Nacional Nº 26.206/2006, a partir de la cual el gobierno nacional y los gobiernos provinciales han diseñado diferentes estrategias de intervención.El objetivo de este artículo es analizar las políticas orientadas a la inclusión educativa, que traducidas en planes, programas y proyectos son “puestas en acto” enacted (Ball et al., 2012) en las escuelas. Para ello recuperamos los discursos y textos producidos en contexto de los gobiernos nacionales que se sucedieron partir del año 2003. Seguidamente identificamos los planes, programas y proyecto diseñados en el marco de la ESO, y abordamos la “puesta en acto” de estas políticas de inclusión socio-educativas desde investigaciones locales y propias. Finalmente planteamos algunas tendencias y tensiones en la deuda histórica por garantizar el derecho a la educación secundaria.
Competencias del profesional de la administración y finanzas para una economía basada en el conocimiento
Authors: Villafuerte Holguín Jhonny Saulo , Benites Cañizares Roxana Ivón
Published: November 2018

Este trabajo tiene como objetivo aportar a la identificación de las competencias que profesionales del campo de la administración y finanzas de América Latina y Caribe requieren para transitar hacia la economía basada en el conocimiento. Se ejecuta una fusión metodológica cuantitativa y cualitativa para estudiar una muestra compuesta por 74 participantes de Ecuador. A partir del modelo de análisis del entorno se han desarrollado: el cuestionario tipo Likert para la autovaloración del perfil profesional, y el cuadro de competencias para el desarrollo profesional en una economía basada en el conocimiento. Los resultados permiten identificar el avance alcanzado por el grupo participante y las rutas a seguir. Se concluye que las competencias a fortalecer en el grupo estudiado son: coordinación para la gestión del conocimiento; compromiso para aportar al mejoramiento de la empresa; comunicación para potenciar el intercambio de conocimientos; creatividad e iniciativa para innovar productos, servicios y procesos; gestión en cuanto a la capacidad de carga laboral; comprensión de la arquitectura de la organización; uso de TIC en la gestión empresarial; gestión ambiental y visión de sostenibilidad, y disponibilidad para la obtención de acreditaciones internacionales.
Relación entre diseño instruccional y rendimiento académico en un curso presencial y bimodal de Matemática: Un estudio cuasiexperimental
Authors: Espinoza-Guzmán Julia , Rodríguez Granados Natalia , Moreira-Mora Tania Elena
Published: November 2018

La finalidad de esta investigación consistió en analizar la relación del diseño instruccional (DI) de un curso de Cálculo y Álgebra Lineal (CAL) en modalidad presencial y bimodal con el rendimiento académico del estudiantado. El diseño del estudio fue cuasiexperimental y se ejecutó en dos fases, una de planificación y otra de intervención, en una muestra de 64 estudiantes del Instituto Tecnológico de Costa Rica. Los datos de las variables del diseño instruccional: objetivos, contenidos curriculares, actividades aprendizaje, materiales educativos y estrategias de evaluación fueron recolectados en el 2013 con una escala tipo Likert mediante la técnica de la encuesta autoadministrada. Según los resultados de la t de student y de regresión lineal múltiple, se comprobó que existe una relación estadísticamente significativa entre la percepción del estudiantado sobre el diseño instruccional y su rendimiento académico. Con estos hallazgos se evidencia que una adecuada planificación del curso contribuye positivamente con el desempeño académico del estudiantado, sea en una modalidad presencial o bimodal. Por ello la principal recomendación es incentivar a los docentes a usar el diseño instruccional en la organización de un curso y valorar como una alternativa la opción bimodal por su flexibilidad de horarios, sobre todo al comprobar que el tipo de modalidad no es un factor significativo en el rendimiento en Matemática.
Translation without a source text: methodological issues in news translation
Authors: Davier Lucile , Van Doorslaer Luc
Published: November 2018

Although journalistic translation research has been quite successful over the past 15 years, from a methodological point of view many scholars struggle with the total or partial absence of a traceable source text. As a consequence, parallel corpora are rare and the researcher often has to rely on multilingual sets of texts that are comparable. This contribution deals in detail with that essential methodological problem. It relates the multisource and multi-author situation of translation in journalism to this non- (or only partially) identifiable character of the source text–target text relationship. We argue that the triangulation of comparative text analysis with fieldwork adds value to this type of research. This argument is illustrated with a study triangulating textual analysis in three languages with interviews and non-participant observation. Such a triangulation also responds to earlier calls for a more elaborated contextualization of the production process and the sociohistorical circumstances in journalistic translation research.
Gambling, motor cautiousness, and choice impulsivity: An experimental study
Authors: Harris Andrew , Kuss Daria , Griffiths Mark D.
Published: November 2018

Background

Impulsivity is currently more commonly regarded as multifaceted, comprising both motor and cognitive subdomains. However, it is less clear how distinct these subdomains are, and the extent to which they interact and draw upon the same psychological resources.

Methods

The present experiment comprised 70 regular (non-problem) gamblers, and investigated the potential to induce impulsivity transfer effects within an electronic gambling context. Original and existing harm-minimization approaches were tested for their efficacy in inducing motor cautiousness during an electronic slot machine simulation. Participants were exposed to a forced discriminatory motor choice procedure, or pop-up responsible gambling messages that either contained emotive or non-emotive responsible gambling content. The subsequent impact these interventions had on delay discounting and reflection impulsivity was also measured using the 27-item Monetary Choice Questionnaire and Information Sampling Task, respectively.

Results

Findings demonstrated that only original harm-minimization approaches, which force the gambler to engage in discriminatory motor choice procedures during gambling, were successful in inducing motor cautiousness. However, both the discriminatory choice procedure and emotive message harm-minimization approaches were successful in facilitating cognitive choice, even though the emotive message intervention was unsuccessful in facilitating motor response inhibition, suggesting both an indirect motor cautiousness route, and a more direct route to improved cognitive choice during gambling.

Conclusion

This study demonstrated that decision-making during gambling can be improved by making simple structural changes to slot machine platforms, by encouraging active engagement in motor processes, which result in a transfer of cautiousness to wider cognitive domains.
Purification of Catalase by Modified Procedure and some Properties of Enzyme
Authors: An Nguyen Hoang , Suminda Godagama Gamarchchige Dinesh , Phuong Nguyen Thi Thu , Thai Dinh Nho , Loan Nguyen Thi Hong
Published: November 2018

Catalase (EC 1.11.1.6) plays an important role in protecting organism from oxidative effect by breaking down H2O2 into H2O and O2 molecules. In this study, a modified procedure for catalase from bovine liver and its properties were reported. Bovine liver catalase was purified to electrophoretic homogeneity as a single protein band around 60 kDa on SDS-PAGE by acetone fractionation, followed by ion-exchange chromatography on DEAE-Sepharose and CM-Sepharose columns. The specific activity of the purified catalase was 79,277 units per mg of protein (U/mg) with 1.87% recovery and purification fold was roughly 60 times. The catalase was a homo-tetramer with a molecular mass of about 240.987 kDa as determined by native gel electrophoresis. The purified enzyme showed the highest activity at pH 7, 37°C, and remained active over a broad range of pH from 5 to 10 and range of temperature from 4°C to 40°C. Its activity was inactivated by incubating in 60°C for 30 min. The activity of the enzyme was induced by Ca2+ and inhibited by Na+, Ni2+, Cu2+, Zn2+, Fe2+, Fe3+ and NaN3. Under the optimal conditions, Km and Kcat/Km values of the catalasewas found to be 23,69 mM and Kcat/Km = 5.106 (M.s)-1, respectively
Potential pyruvate and poly (3- hydroxybutyrate) production of halophiles bacteria isolated from Giao Thuy, Nam Dinh’s mangrove forest
Authors: Lan Anh Hoang Thi , Tam Luu Thi , Minh Hien Hoang Thi Thi , Ha Nguyen Cam , Thu Ngo Thi Hoai , Kawata Yoshikazu , Diep Ngo Thi Hoa , Thuy Nguyen Thanh , Hong Dang Diem
Published: November 2018

Pyruvic acid (pyruvate) the most important α-oxocarboxylic acid, plays a central role in energy metabo-lism in living organisms. It is used mainly as a starting material in the biosynthesis of pharmaceuticals as well as employed in the production of crop protection agents, polymers, cosmetics and food additives. Four Gram-negative, moderately halophilic, pyruvate and poly (3-hydroxybutyrate)- producing strains were isolated from soil samples collected from mangrove forest at Giao Thuy, Nam Dinh province. Preliminary screening results showed that among fours strain, the ND7 strain was able to produce the highest bioplastic-poly (3-hydroxybutyrate) (PHB) and extracellular secretion of pyruvate, respectively, reaching 50.23% dry weight and 6.87 g/L after 60 hours of cultivation. When cultured in high alkaliphilic medium (pH 9.4), the pyruvate secretion increased significantly (21.02 g/L after 60 hours of cultivation). Based on the morphological, bio-chemical characteristics and nucleotide sequence analysis of partial 16S rRNA gene, the ND7 strain was iden-tified as Halomonas maura. The results allow us to conclude that ND7 strain is a potential target for the ex-ploitation of pyruvate in a larger scale.
DEGRADATION OF 2,4-DICHLOROPHENOXYACETIC ACID BY Pseudomonas fluorescens Strain HH
Authors: Oanh Nguyen Thi , Duc Ha Danh , Huy Tran Dat , Hien Nguyen Gia , Huynh Nhu Nguyen Thi
Published: November 2018

Pseudomonas fluorescens HH isolated from soil utilized 2,4-Dichlorophenoxyacetic acid (2,4D) as a sole carbon and energy source. The strain completely utilized 1.0 mM of 2,4D within 30 hr. The immobilized Pseudomonas fluorescens HH degraded 2,4D with higher rates compared to the rates of free-suspension cells. The determination of degradation and cell growth kinetics in exponential growth phase of bacteria showed that both fitted with the Edwards model, in which the maximal utilization rates and inhibition coefficient were 0.079 ± 0.008 mM/h and 0.820 ± 0.03 mM, respectively. The addition of glycerol as a cryoprotectant into alginate increased the survival of bacteria in beads during freeze-drying process, which resulted in reducing the adverse effects of bead lyophilization.
Study on Solitary Wasps of the SubfamilY Eumeninae (Hymenoptera: Vespidae) in Huu Lien and Na Hang Nature Reserves, with New Records of One Genus and Three Species
Authors: Lien Nguyen Thi Phuong , Ha Nguyen Thi Thu , Tuan Luong Viet , Ngan Doan Hong , Nga Cao Thi Thanh
Published: November 2018

The composition of solitary wasps belonging to subfamily Eumeninae (Vespidae: Hymenoptera) in Huu Lien and Na Hang Nature Reserves has been surveyed. These are two study sites represent-ing two sub-ecological zones, Cao Bang–Lang Son and Tuyen Quang–Ha Giang, which are at altitude below 300 m. As the results, a total of 29 species in 20 genera was recorded in both study sites, of them, 23 species in 16 genera were recorded in Huu Lien, and 23 species in 18 genera were recorded in Na Hang. Among them, one species Allorhynchium lugubrinum (Cameron, 1990) has been recorded only in Tuyen Quang–Ha Giang sub-ecological zone. Among the recorded taxa, the genus Antodynerus was newly recorded in Vietnam, and represented by one species Antodynerus limbatus (de Saussure, 1852). Another two species, Allorhynchium lugubrinum (Cameron, 1990) and Stenodyneriellua guttulatus (de Saussure, 1852) were recorded in Vietnam for the first time.
BIOTRANSFORMATION OF GINSENOSIDE Rb1 BY BACTERIAL CRUDE ENZYME OF Paenibacillus spp. strain E3 ISOLATED FROM VIETNAMESE GINSENG SOIL
Authors: Tran Tram Bao
Published: November 2018

In ginseng, minor ginsenosides were more effective pharmacological properties than major ginsenosides. Therefore, finding bacteria that can convert major ginsenosides has been paying attention. Ginsenoside Rb1 is one of major ginsenosides of ginseng and its biotransformation produces pharmacologically active compounds such as compound K. In this study, the isolation of bacterial strains from Vietnamese ginseng cultivated soil was carried out with the objective of evaluating their hydrolytic capacity for use in biotransformation of ginsenosides Rb1. In the screening of β-glucosidase producing bacteria, seven isolates exhibited black color zones on R2A agar medium containing esculine. Among seven isolates, strain E3 showed the highest ability biotransformation of ginsenosides Rb1 in Luria-Bertani broth. Therefore, strain E3 was selected for further research. Biotransformation of Rb1 was observed by using thin layer chromatography (TLC) and high performance liquid chromatography (HPLC) with ginsenoside standards for comparison. We determined the optimal conditions for biotransformation of ginsenoside Rb1 into the compound K of crude enzymes of strain E3 were at 30°C, pH 7,0 and 3 days. Ginsenoside Rb1 was converted into compound K via ginsenoside Rd and F2. The analyses of 16S rRNA gene and phylogenetic tree indicated that strain E3 was closely related to Paenibacillus terrigena with 99,4% identity and formed a discrete cluster with type strain Paenibacillus terrigena A35T with high bootstrap support (99%), supporting strain E3 belonging to the species Paenibacillus terrigena. Physiological characteristics also supported strain E3 belonging to the genus Peanibacillus. This is the first report of biotransformation of ginsenosides using bacterial strains isolated from Vietnamese ginseng cultivated soil in Vietnam. Based on our the obtained results, strain E3 could be applied for the preparation of ginsenoside compound K for use in the cosmetic and pharmaceutical industries.
QUALIDADE FÍSICO-QUÍMICA E MICROBIOLÓGICA DE HORTALIÇAS DESIDRATADAS AO SOL E EM SECADOR LABORATORIAL
Authors: Santos Filho Adair da Silva , Veloso Noel Cardoso , Careli Roberta Torres , Cano-Chauca Milton Nobel , Costa Candido Alves da , Oliveira Neide Judith Faria de , Campos Jasmine Alves
Published: November 2018

Em Minas Gerais, Brasil, couve e Ora-pro-nóbis são folhosas comuns e a dessecação dessas pode aumentar vida útil e valor agregado. Objetivou-se desidratar e realizar análise físico-química e microbiológica de Brassica oleraceae e Pereskia aculeata ao sol e em secador. Folhas sanitizadas e enxaguadas foram cortadas em espessura aproximada de 5 mm e porções de 300 g foram colocadas em bandejas, no secador a 60 °C e ao sol. Monitorou-se a perda de umidade até estabilização da massa e elaboraram-se gráficos de secagem. Após estabilizar por 8h, as amostras foram acondicionadas a vácuo e armazenadas em temperatura ambiente por cinco dias para análises físicas, microbiológicas e químicas. A perda de massa foi mais acentuada nas primeiras horas e posteriormente observou-se decréscimo. As equações de perda de massa foram: y=5,649x2–77,63x+301,0 para couve cortada sob secagem ao sol; y=2,800x2–53,35x+300,2 para Ora-pro-nóbis cortado sob secagem ao sol nas primeiras 10h; y=0,098x2–2,099x+40,30 para Ora-pro-nóbis cortado sob secagem ao sol nas 4h seguintes; y=1,449x2–39,50x+300 para couve cortada em secagem artificial; y=1,637x2–42,93x+300 para Ora-pro-nóbis cortado sob secagem artificial; y=0,377x2– 20,02x+293,0 para folhas íntegras de Ora-pro-nóbis sob secagem artificial. Constatou-se ausência de contaminantes físicos e de Salmonella spp., além de contagens de Staphylococcus coagulase positivo e coliformes a 35°C inferiores às permitidas, nos dois métodos de desidratação. As médias de umidade foram 8,32 a 8,37% e de proteínas, 18,72 a 24,74%. A qualidade físico-química e microbiológica de B. oleraceae e P. aculeata desidratadas ao sol e em secador foi satisfatória.
Bone Poems: Listening and Speaking from the Ground
Authors: Prince Cali
Published: November 2018

As a practice-led researcher traversing the multiple worlds that exist between artists, communities and institutions, I turned to poetry to begin to speak the unspeakable; to retrieve the metaphorical bones of a story that were taken out. The bones of this story came through the voices of four women who lived and worked at a site located in Western Sydney. Their stories opened a crack in the findings of the research. Unexpectedly their stories interconnected. In an emergent process rather than a predetermined one, the poetic became a way to bring some of the fragmented 'bones' of this story to light. A multilayered participatory process of hand making relationship maps and poetry as the final layer of this experimental approach to ethnographic inquiry, resulted in the creation of what I call 'bone maps' and 'bone poems'. They have created 'ethnographic places' which allow for deeper inquiry into the human side of the story, interwoven with the complexity of official and often perceived more factual accounts as presented across multiple institutional narratives. I found that ethnographically based poetry, informed by earlier sensory mapping processes could reveal what more linear approaches did not. This paper introduces 'Bone Poems', to reveal how this experimental approach reaches ways of knowing, through metaphor, in ways that other methods do not.
Rotorua Mad Poets: Words of Their Own
Authors: Locke Terry
Published: November 2018

Abstract

 

If truth is beauty, beauty truth

Just as the poet said[i],

Then patterned sense in research

Can be sewed by lyric thread.

 

Mad Poets Rotorua is

The topic of this story,

Acknowledging that all research

Is largely allegory.

 

The group has met religiously

Since Nineteen Ninety-Four

Enabling some to read their poems

Who’d never read before.

 

From my perspective many themes

Emerge in all that follows,

While these are mine, there will be those

That you my reader hallows.

 

[i] John Keats’ famous conclusion to “Ode on a Grecian urn”, slightly paraphrased.