THE MEDIATING EFFECT OF JOB SATISFACTION ON THE RELATIONSHIP BETWEEN TEAM WORK SKILLS AND WORK VALUES OF TEACHERS

The purpose of this study was to determine the mediating effect of job satisfaction on the relationship between teamwork skills and the work values of teachers. Utilizing quantitative, non-experimental design via correlational technique, data were obtained from 300 elementary public-school teachers who belong to the 3 districts, Magsaysay, Bansalan and Matan-ao under the Division of Davao Del Sur in the province of Davao Del Sur. The researcher utilized a stratified random sampling technique and an online survey mode of data collection. The researcher also utilized the statistical tools mean, Pearson r and Path Analysis. From the results of the study, it was found that there is a high level of mean scores for all variables of teamwork skills, work values and job satisfaction of teachers. Also, results revealed that there are significant relationships between teamwork skills and work values, between teamwork skills and job satisfaction and between job satisfaction and work values of teachers. Further, it was revealed that there was a full mediation effect of job satisfaction on the relationship between teamwork skills and the work values of teachers. This implies that teamwork skills convey the job satisfaction of teachers.  Article visualizations

SANS study of hybrid silica aerogels under "in situ" uniaxial compression

We have modified the inorganic silica network of aerogels with polydimethylsiloxane (PDMS), a hydroxyl-terminated polymer, to obtain an organic modified silicate (ORMOSIL). Reactions were assisted by high-power ultrasounds. The resulting gels were dried under supercritical conditions of the solvent to obtain a monolithic sono-aerogel. The mechanical behaviour of these aerogels can be tuned from brittle to rubbery as a function of the organic polymer content. In order to determine the links between the mechanical behaviour and modifications made to the microstructure, SANS (small-angle neutron scattering) experiments were carried out. To measure the intensities under "in situ" uniaxial compression of the aerogel, a specific sample-holder was built. Under uniaxial compression the 2D-diagrams were significantly anisotropic (butterfly pattern), indicating the rearrangement of the polymer. The form factor of these aerogels is described well by two correlation lengths, small microporous silica clusters surrounded by entangled polymer chains of 6 nm average size (blobs), which form a larger secondary level of agglomerates governed by the "frozen-in" elastic constraints.Comisión Interministerial de Ciencia y Tecnología MAT2005-1583European Commission CT-2003-50592

The cluster model: A hierarchically-ordered assemblage of random-packing spheres for modelling microstructure of porous materials

A new structural model based on the premises widely used for describing the structure of random materials, and especially aerogels, is introduced. Aerogels are described as an assemblage of randomly-packed spheres in several hierarchically-ordered levels. A new algorithm has been developed for constructing structural models from these premises using computer simulation. Subsequently, several techniques based both on the Monte Carlo technique and on geometrical considerations for characterizing real systems have been simulated, and textural parameters of the models have been obtained, including specific surface area, specific porous volume and the apparent density of the systems. This characterization process yields a set of parameters used for testing the capacity of the models to reproduce the structure of several real systems, like aerogels. Special attention has been paid to the pore size distribution calculations: the Monte Carlo integration and the triangulation algorithms have been compared.Comisión Interministerial de Ciencia y Tecnología MAT2005-158

Competencias para la sostenibilidad en los planes de estudio de los grados de ciencias de la Universitat de València

Se ha realizado un estudio sobre las Competencias Generales y Específicas para la Sostenibilidad en los planes de estudio de los grados del área de Ciencias de la Universitat de València1. La metodología aplicada es de tipo descriptivo y empírico. Se ha construido un tesauro para la recogida de datos, que contempla los temas prioritarios de la Declaración de la Década de la Educación para el Desarrollo Sostenible y se ha desarrollado una herramienta de análisis, la construcción de una base de datos relacional.Se hace una propuesta para la inclusión en las competencias generales de todos los grados de Competencias para la Sostenibilidad

Neoextrativismo e natureza na produção de Daniel Fitte

Este trabalho analisa um conjunto de obras do artista plástico Daniel Fitte (Sierras Bayas, 1960) considerando-as estratégias de intervenção contra o avanço do modelo neoextrativista em Sierras Bayas, um pequeno município localizado no distrito de Olavarría, na província de Buenos Aires, Argentina. Em tensão com o moderno conceito instrumental de natureza, as produções de Fitte sobre a progressiva mutação da paisagem e devastação dos ecossistemas locais pela atividade mineira, convidam-nos a pensar outros elos e representações - da natureza e dos outros - fora da a lógica do domínio e da exploração. O situacional e o relacional tornam-se traços fundamentais de muitas dessas produções. São obras que marcam a paisagem e traçam percursos; produzem histórias - às vezes em tensão - sobre seu próprio território e resgatam a interdependência, a reciprocidade e a complementaridade próprias do paradigma do cuidado como características de uma sociedade sustentável (GILLIGAN, 2013; SVAMPA, 2015)

La Impugnación del Canon: Los estudios visuales y las nuevas historias (del arte) producidas desde América Latina

A partir de la década de 1980 asistimos, en América Latina, a la reevaluación del papel desempeñado por las imágenes y diversas experiencias estéticas en la escritura histórica y en su transmisión. El debate historia del arte/estudios visuales ocurrido durante los años 80 y 90 provocó no sólo la imbricación de lo artístico con el campo más vasto de la cultura visual, sino también la diversificación de los horizontes epistemológicos desde los cuales las diversas imágenes y prácticas artísticas eran analizadas y significadas. Este artículo analiza, a través de los escritos de Nelly Richard y Luis Camnitzer, el impacto que la `revuelta disciplinar¿ de los 80 y 90 -especialmente de la mano de los estudios culturales y visuales- tuvo en la escritura de la historia, no sólo del arte y no sólo latinoamericana.  Since 1980, we have witnessed the reassessment of the role that images and different aesthetic experiences play in Latin American historical writing and its transmission. The debate history of art/visual studies that took place during the `80s and `90s not only triggered the nesting of the artistic within the broader field of visual culture, but also the diversification of the epistemological horizons from which different images and artistic practices were analyzed and their meaning identified. Through Nelly Richard and Luis Camnitzer¿s writings, this article discusses the impact that the theoretical approaches of the `80s and `90s had on the writing of both art history and Latin-American history - especially from the perspective of cultural and visual studies.Artículo revisado por pare

Grape seed carbons for studying the influence of texture on supercapacitor behaviour in aqueous electrolytes

Microporous carbon materials having a negligible contribution of mesopores have been synthesised by cyclic oxidation/desorption of grape seeds char using air, ozone and HNO3 as oxidant agents. By adequate selection of the operating conditions (oxidation procedure and number of cycles), it is possible to tune the volume and pore size distribution (PSD) of carbon materials and therefore determine the influence of carbon textural properties on the electrochemical behaviour of carbon-carbon symmetric supercapacitors operating in different aqueous electrolytes. The results confirm that although energy density can be improved using neutral electrolytes because of their higher stability potential window compared to acidic or basic electrolytes, it is important to adapt the textural properties of the carbon materials to improve the ions' diffusion inside the porosity for assuring the charging of the double layer at high current densities to reach high power densitiesThe authors greatly appreciate the financial support from the Spanish Ministerio de Ciencia e Innovación (CTQ2009-09983

Bioactivity of wollastonite/aerogels composites obtained from a TEOS-MTES matrix

Organic-inorganic hybrid materials were synthesized by controlled hydrolysis of tetraethoxysilane (TEOS), methyltrimethoxysilane (MTES), synthetic wollastonite powders and polydimethylsiloxane (PDMS) in an ethanol solution. Aerogels were prepared from acid hydrolysis of TEOS and MTES with different volume ratio in ethanol, followed by addition of wollastonite powder and PDMS in order to obtain aerogels with 20 wt% of PDMS and 5 wt% of CaO of the total silica. Finally, when the wet gels were obtained, they were supercritically dried at 260°C and 90 bar, in ethanol. In order to obtain its bioactivity, one method for surface activation is based on a wet chemical alkaline treatment. The particular interest of this study is that we introduce hybrid aerogels, in a 1 M solution of NaOH, for 30 s at room temperature. We evaluate the bioactivity of TEOS-MTES aerogel when immersed in a static volume of simulated body fluid (SBF). An apatite layer of spherical-shaped particles of uniform size smaller than 5 microns is observed to form on the surface of the aerogels after 25 days soaking in SBF.Ministerio de Ciencia e Innovación MAT2005-01583Junta de Andalucía TEP 79