bluuebunny/crossref_metadata_2025_split huggingface dataset:
Virus tropical en la clase de E/LE: cómo trabajar la narración visual, la identidad y el plurilingüismo con una novela gráfica
Authors: Corti Agustín 
Published: July 2019

Resumen: El presente artículo es un aporte al desarrollo de la alfabetización visual en la clase de E/LE a partir de la novela gráfica Virus tropical de Powerpaola. Parte de un enfoque narratológico a fin de fomentar las competencias socioculturales y la conciencia de la identidad de los aprendientes respecto al español como una lengua pluricéntrica. La secuencia didáctica está estructurada en dos partes que se centran en el desarrollo integrado de las competencias propuestas.Palabras clave: alfabetización visual, identidad, plurilingüismo, variedades del español. Abstract: the paper presents an approach to the development of visual literacy in S/FL through the graphic novel Virus tropical from Powerpaola. Within a narratological approach it elaborates exercises on sociocultural competence and identity awareness of learners on behalf of Spanish as a pluricentric language. The didactic proposal is structured in two stages that integrate the proposed competences.Keywords: visual literacy, identity, plurilinguism, varieties of Spanish.
100 voces y expresiones del español de Valencia en el aula de E/LE
Authors: Giménez Folqués David 
Published: July 2019

Resumen: Resulta recurrente en el aula de E/LE preguntarse qué variante del español enseñar. Por un lado, es importante que los estudiantes se familiaricen con la realidad dialectal panhispánica, donde pueden encontrarse con diferentes variantes del español; pero, por el otro, también es interesante que conozcan las peculiaridades del español de la zona donde están llevando a cabo su aprendizaje lingüístico. De este modo, en el presente trabajo trataremos de explicar las características del español de Valencia mediante su léxico, en concreto, mediante 100 voces y expresiones extraídas de corpus significativos como el de Val.Es.Co, PRESEVAL o CORPES. Finalmente, incluiremos una breve propuesta didáctica que sirva como muestra.Palabras clave: variedades del español, español de Valencia, corpus españoles. Abstract: It is relevant to know what Spanish variant we have to teach in E/LE class. On the one hand it is important that students have knowledge learn about the reality of the Spanish language. On the other hand, it is also important that they learn the Spanish variant from the context where they are studying. Therefore, we will explain the characteristics of the Valencian Spanish, using 100 words and expressions extracted from Val.Es.Co, PRESEVAL and CORPES corpora. Finally, we will include a brief didactic proposal.Key words: Spanish variants, Valencian Spanish, Spanish corpus.
Estrategias para la enseñanza del lenguaje académico. Dominio desde la instrucción de las destrezas orales
Authors: Cortés Bueno María Esther 
Published: July 2019

Resumen: La presencia cada vez más numerosa de estudiantes de movilidad procedentes de distintos países comunitarios y extracomunitarios en las aulas de nuestras universidades hace necesario habilitar un espacio curricular para ellos. No hay que olvidar que su presencia es parte de los objetivos marcados por el proyecto del Espacio Europeo de Enseñanza Superior (EEES); y una correcta integración de este tipo de alumnado respondería a las aspiraciones de internacionalización de la Universidad. La pretensión de esta propuesta es exponer el mecanismo de los cursos en los que a partir de la instrucción en las destrezas orales se establece la base para profundizar en el aprendizaje de la expresión escrita en distintos géneros textuales académicos. Se trabaja sobre una rica tipología de géneros textuales, con enfoques que fomentan el uso real de la lengua.Palabras clave: Enseñanza universitaria, Espacio Europeo de Educación Superior, géneros textuales, español lengua extranjera, currículo integrado AICLE. Abstract: The ever increasing number of students studying in our university classrooms proceding from within and outwith the European community, create the need for a special curricular programme for these students. It should not be forgotten that their presence is part of the objectives of the project of the European Space of Higher Education (EHEA): a correct integration of this students would respond to the aspirations of internationalization of the University. The aim of this proposal is to explain the mechanism of courses whereby the teaching of oral skills form the foundations for a deeper learning of written skills in different academic contexts, working on a rich variety of tipologies of textual genre, with emphasis on the true use of the language.Key words: University learning, European Higher Education, academic genres, Spanish foreign language, integrated curriculum.
¿Y dónde está la gracia? El humor en el aula de ELE
Authors: Linares Bernabeu Esther 
Published: July 2019

Resumen: El presente trabajo muestra el fenómeno pragmático del humor como un instrumento idóneo para suscitar la reflexión sobre el uso y funciones del lenguaje en los estudiantes de ELE. Una vez expuestas las referencias al humor verbal y a la ironía por parte del Marco Común Europeo de Referencia y el Plan Curricular del Instituto Cervantes, ofreceremos una propuesta didáctica cuyo objetivo es la activación y desarrollo de la competencia comunicativa. Muestras humorísticas como el monólogo pueden contribuir a mejorar las destrezas lingüísticas y pragmáticas en ELE desde niveles iniciales.Palabras clave: Humor, Competencia metapragmática, ELE, Propuesta didáctica. Abstract: This paper shows the pragmatic phenomenon, humour, as an ideal tool to promote students’ awareness of the uses and functions of the language. After having presented verbal humour and irony within the Common European Framework of Reference and the Curricular Plan of the Instituto Cervantes, we will offer a didactic proposal focused on the activation and development of the communicative competence. Humorous samples such as Stand-Up may enhance linguistic and pragmatic skills in Spanish as FL from novice levels.Key words: Humour, Metapragmatic competence, Spanish as a Foreign Language, Didactic Proposal.
El español hablado en Valencia. Interferencia lingüística y enseñanza de la lengua
Authors: Giménez Folqués David , Roselló Verdeguer Jorge 
Published: July 2019

Resumen. Todas las lenguas muestran variación, tanto desde el punto de vista geográfico como social, y su aprendizaje siempre se produce a través de una de sus variedades geográficas. Hay zonas en que el español convive con otras lenguas, y esto le da una serie de características especiales que el profesor de español como lengua extranjera debe conocer y explicar a sus alumnos. En este trabajo, analizamos algunas interferencias lingüísticas que se producen entre español y valenciano, variedad del catalán que se habla en Valencia, y proponemos algunas actividades didácticas para su aprovechamiento en las clases de ELE.Palabras clave. Variación, dialectos, interferencia lingüística, enseñanza. Abstract. All languages show variation both from a geographical and a social point of view, and its learning is always produced through one of its geographical varieties. There are areas where the Spanish language coexist with other languages, and this gives it a series of special features which the teachers of Spanish as a foreign language must know and explain to his/her students. In this paper, we analyze some linguistic interferences which are produced between Spanish and Valencian –a variety of Catalan which is spoken in Valencia– and, finally, we propose some teaching activities to be used in ELE classes.Key words: variation, dialect, linguistic interference, teaching.
A new primer for metabarcoding of spider gut contents
Authors: Lafage Denis , Elbrecht Vasco , Cuff Jordan , Steinke Dirk , Hambäck Peter , Erlandsson Ann 
Published: July 2019

As a key predator group, spiders have received a lot of attention by food web ecologists in diverse fields such as pest control, pollutant transfers, and cross-ecosystem fluxes. The difficulty involved in studying their diet has led to the use of new technologies such as metabarcoding of gut contents. The amplification of a broad range of spider prey without amplifying spiders themselves is challenging and, until now, an efficient universal primer purposed for this has not existed.
We developed a novel forward primer (NoSpi2) targeting the cytochrome c oxidase subunit I gene. The primer was designed not to amplify spiders of the oval calamistrum clade (Lycosidae and closely related species) while still amplifying most other invertebrates. NoSpi2 was tested together with the reverse primer BR2 in silico, in vitro on single specimens of prey and spiders, on mock and malaise trap communities, and in an ecological application.
In silico evaluation predicted high primer bias for spiders of the oval calamistrum clade and low bias for all other invertebrates. These results were largely confirmed by in vitro tests. Additionally, some spider families were not amplified contrary to our expectations. We demonstrated a high efficiency for the primer pair NoSpi2/BR2 which recovered up to 94% of taxa in the mock community and 85% of the taxa detected by the best invertebrate primer pair known (BF3+BR2) for the malaise trap community. The field experiment showed that Lycosidae spider DNA is not amplified by the NoSpi2 primer set. It also demonstrated a broad range of detectable prey species. We found prey from 12 orders, 67 families and 117 species.
The ability of the NoSpi2/BR2 primer combination to reliably amplify prey species, without amplifying any predator reads, makes it an ideal choice for gut-content analysis for spider species of lycosids and closely related species, even enabling the homogenization of entire spider specimens without dissection. Given that the detected prey species included other spiders and carabid beetles, this primer could be used for not only diet and biological control studies, but also to study intra-guild predation.
Effects of Urban Expansion on Agricultural Resources: A Case Study of Embu Town in Kenya
Authors: Murimi Eliud K. , Njeru Lucy K. , Gichimu Bernard M. , Ndirangu Samuel N. 
Published: July 2019

Aim: To determine the effect of urban development on agricultural resources in peri-urban areas of Embu town.
Study Design: Descriptive survey design involving observational and survey methods.
Place and Duration of Study: The study was carried out in three sub-locations lying within the peri-urban areas of Embu town, namely, Kamiu to the East, Njukiri to the West and Nthambo to the North of the town. The study was carried out from June to August 2018.
Methodology: Purposive stratified sampling was applied in this study where the three sub-locations were organized into three strata depending on their distance from the Central Business District i.e. 2, 4 and 6 Km for Kamiu, Njukiri and Nthambo respectively. A structured questionnaire was administered to 51 households per sub-location making a total of 153 respondents. Additional data was collected using personal observations and interviews with selected institutions with key information relating the study area. The data was analyzed using Statistical Package for Social Sciences. Descriptive analysis was carried out to generate frequencies and correlations. Quantitative data was subjected to Analysis of Variance where the three sub-locations were considered as treatments and means separated using Least Significant Difference at 95% level of confidence.
Results: The results indicated that urban development had encroached into hitherto agricultural areas exerting pressure into available agricultural resources such as land, water and labour thus contributing to reduced farming activities in the area. Significant differences between the three sub-locations were observed in average farm sizes, proportion of land allocated to farming, proportion of farmers in the area and availability of irrigation water and agricultural labour. The study recommends policy interventions to manage peri-urbanization in Embu and other towns with similar set up, in order to reduce degradation of agricultural resources and control unsustainable land sub-division and land use changes.
Phenology of ‘Magallanes’ Pummelo (Citrus maxima) Trees and Its Growth and Development as Influenced by Potassium Nutrition
Authors: Magbalot-Fernandez Alminda , Guzman Constancio C. De 
Published: July 2019

This study aimed to determine the influence of potassium (K) fertilization on the vegetative growth, flowering and fruit development of 13-year old ‘Magallanes’ pummelo [Citrus maxima (Burm. Ex Rumph.) Merr.] trees. The experiment was conducted at South Davao Corporation (SODACO) farm, Davao city for 12-months duration. Five treatments were observed with increasing K levels were applied per tree: control (no fertilization), without K, 150 g K basal (recommended rate based on soil analysis), 225 g K basal, and 225 g K basal + foliar application. The critical stage of tree growth coincided with the months of May and August. Peak leaf flushing occurred in June and peak flowering with fruit set in April. The crucial stage of fruit development was noted two months after fruit set. Thus, optimum fertilization must be applied during these stages for maximum growth and production in ‘Magallanes’ pummelo. The vegetative growth of pummelo was not affected by increasing K rates. The recommended rate (150g K basal per tree) significantly increased canopy diameter by 76% but higher K rates did not increase tree height, due to the effect of fruit load and nutrient competition. On the other hand, increasing K rates to 50% higher than the recommended rate (225 g K per tree) increased the number of flushes by 36-100%. Flowering, fruit set and yield of ‘Magallanes’ pummelo were also enhanced by higher K rates. Flowering was increased by 4 times, fruit set by 86-100%, fruit number by 7 times, weight per fruit by 22-26%, and yields up to 9 times on trees composted with 225 g K rates. The fruit size (diameter and length), however, did not increase by increasing the K level.
The Effect of Honey Saffron Syrup on Labor Progression in Nulliparous Women
Authors: Ghaderi Sheno , Zaheri Farzaneh , Nouri Bijan , Shahoei Roonak 
Published: July 2019

Background: Labor duration is one of the factors affecting the pregnancy outcome. Objective of the present study is to determine the effect of honey saffron syrup on the labor progression in nulliparous women.
Methods: The nulliparous women with inclusion criteria were randomly divided into three equal groups. For first group, the saffron syrup prepared with honey and for second group, saffron syrup prepared with sugar and in the control group the placebo were orally administered every two hours. Collected data were analyzed using Fisher’s test, ANOVA with Fisher’s post hos test and Repeated measure statistical method with p <0.05 as significant.
Results: The mean of labor duration in the two intervention groups was significantly shorter than the control group (p=0.000). The duration of the first stage of labor in the honey saffron syrup group was significantly shorter than the sugar saffron syrup group (p=0.016).
Conclusion: Administration of saffron syrup with honey shortened the time of first, second and third stage of labor.
Development and validation of the Eyewitness Metamemory Scale
Authors: Saraiva Renan Benigno , van Boeijen Inger Mathilde , Hope Lorraine , Horselenberg Robert , Sauerland Melanie , van Koppen Peter J. 
Published: July 2019

SummaryMetamemory can be defined as the knowledge about one's memory capabilities and about strategies that can aid memory. In this paper, we describe the development and validation of the Eyewitness Metamemory Scale (EMS), tailored specifically for use in face memory and eyewitness identification settings. Participants (N = 800) completed the EMS and other measures on general metamemory. Results from exploratory and confirmatory factor analysis revealed good factorial validity, internal consistency, and content validity. The EMS items emerged into three distinct factors: memory contentment, memory discontentment, and memory strategies. The EMS is a brief and easily administrable questionnaire that might be used to assess self‐ratings of face recognition capacity and use of strategies to encode faces.
A passivity‐based simple adaptive synergetic control for a class of nonlinear systems
Authors: Mokhtari Khalil , Elhadri Abdelhafid , Abdelaziz Mourad 
Published: July 2019

SummaryFor a class of nonlinear systems with the representation {A(x), B(x), C} and where the system parameters and dynamics are unknown, a simple adaptive synergetic controller ensuring the asymptotic convergence of the system to a desired manifold is proposed based on the technique of simple adaptive control (SAC). It is well known that the design of the synergetic control (SC) law requires a thorough knowledge of the system parameters and dynamics. Such problem obstructs the synthesis of the SC law and the designer is prompted to pass through the estimation methods, which, in turn, poses a problem of increasing the computation time of the control algorithm. To cope with this problem, a solution is proposed by modifying the original SC law to develop an SAC‐like adaptive SC law without the need of prior knowledge of the system. The stability of the proposed adaptive controller is formally proven via the Lyapunov approach. Experimental application to a quadrotor system is given to validate the theoretical results.
The Evolution in Catalytic Activity Driven by Periodic Transformation in the Inner Sites of Gold Clusters
Authors: Sun Yongnan , Wang Endong , Ren Yujing , Xiao Kang , Liu Xu , Yang Dan , Gao Yi , Ding Weiping , Zhu Yan 
Published: July 2019

AbstractIt is extremely difficult to distinguish the contributions of different sites on the surface and in the inner sites of a catalyst to the overall catalytic performance, as the observed catalytic results reflect an ensemble average from almost all the active sites. How do the inner sites of a catalyst that seem to be not directly involved in a catalytic process exactly contribute to the catalytic performance? Toward this goal, herein the studies not only provide fundamental insights into how the alteration of Au8n+4(SR)4n+8 clusters by only the inner structure can dramatically change the intrinsic catalytic properties, where Au8n+4(SR)4n+8 (n = 3, 4, 5) clusters have the same surface motifs but share a periodic kernel structure, but also further demonstrate that the evolution in catalytic activity can potentially be determined by periodic transformation in the inner kernels.
Biomimetic Locomotion of Electrically Powered “Janus” Soft Robots Using a Liquid Crystal Polymer
Authors: Xiao Yao‐Yu , Jiang Zhi‐Chao , Tong Xia , Zhao Yue 
Published: July 2019

AbstractOriented liquid crystal networks (LCNs) can undergo reversible shape change at the macroscopic scale upon an order–disorder phase transition of the mesogens. This property is explored for developing soft robots that can move under external stimuli, such as light in most studies. Herein, electrically driven soft robots capable of executing various types of biomimetic locomotion are reported. The soft robots are composed of a uniaxially oriented LCN strip, a laminated Kapton layer, and thin resistive wires embedded in between. Taking advantage of the combined attributes of the actuator, namely, easy processing, reprogrammability, and reversible shape shift between two 3D shapes at electric power on and off state, the concept of a “Janus” soft robot is demonstrated, which is built from a single piece of the material and has two parts undergoing opposite deformations simultaneously under a uniform stimulation. In addition to complex shape morphing such as the movement of oarfish and sophisticated devices like self‐locking grippers, electrically powered “Janus” soft robots can accomplish versatile locomotion modes, including crawling on flat surfaces through body arching up and straightening down, crawling inside tubes through body stretching and contraction, walking like four‐leg animals, and human‐like two‐leg walking while pushing a load forward.
Active Posts in Deterministic Lateral Displacement Devices
Authors: Beech Jason P. , Keim Kevin , Ho Bao Dang , Guiducci Carlotta , Tegenfeldt Jonas O. 
Published: July 2019

AbstractUsing electrically connected metal‐coated posts in a deterministic lateral displacement (DLD) device and applying electric fields, electrokinetics is used to tune separations, significantly decrease the critical size for separation, and increase the dynamic range with switching times on the order of seconds. The strength of DLD stems from its binary behavior. To first approximation, particles move in one out of two trajectories based on their effective size. For particles that are close to the threshold size, a small external force is sufficient to nudge the particles from one trajectory to another. The devices consist of arrays of cylindrical metal‐coated SU‐8 posts connected by an underlying metal layer. This allows the application of voltages at the post surfaces and the generation of electric field gradients between neighboring posts, causing polarizable particles to experience a dielectrophoretic (DEP) force. This force, which depends on the volume and polarizability of the particle, can be made sufficient to push particles from one trajectory into another. In this way, the critical size in a device, normally fixed by the geometry, can be tuned. What's more, adding DEP in this way allows for the simultaneous creation of multiple size fractions.
Hybrid Graphene/Cu2O Quantum Dot Photodetectors with Ultrahigh Responsivity
Authors: Liu Qiaoli , Tian Huijun , Li Jingwei , Hu Anqi , He Xiaoying , Sui Manling , Guo Xia 
Published: July 2019

AbstractFlexible high‐sensitivity photodetectors are desirable for use in future wearable optoelectronics. Graphene is attracting considerable attention because of its outstanding electrical, optical, and mechanical properties, which make graphene appealing in flexible optoelectronics and photodetection applications. In this paper, an internal current gain mechanism is proposed based on a 2D/0D photodetection system. The carrier density in the 2D material can be amplified via Fermi level modulation when a 0D quantum dot absorbs photons. An ultrahigh responsivity of more than 1010 A W−1 and fW‐scale light detectivity are achieved at room temperature using the flexible transfer‐free hybrid graphene/Cu2O quantum dot photodetector developed in this work. After excessive bending, the responsivity of the photodetector still reaches 106 A W−1, thus demonstrating the promising flexibility of the device.