Liderança critica aplicada através da lens latinas: um abordagem alternativo do liderança educacional

The aims and objectives of this research were to investigate and better understand ways in which race and gender play out as differences of significant consequence in applied leadership practice. Utilizing qualitative case study methodology coupled with counter-story, a critical race theory approach, the authors analyze data on two Mexican descent educational leaders in the US: one Latino K-6 principal and one Chicana university Dean. Findings indicate evidence supporting positive identity leadership traits as practiced through raced and gender lenses, resulting in effective socially just and equitable leadership outcomes for the participants in the study. These findings are new and particularly relevant as demographic shifts in the US and the world include high numbers of Latino/a and Mexican descent individuals. The strategies employed by participants suggest subaltern ways of educational leadership not previously considered in research and literature. The authors discuss evidence of characteristics supporting applied critical leadership (ACL), an emerging leadership theory, in the leadership practices of the participants. Finally, mainstream implications and guidelines are provided for application in multiple educational leadership contextsEl propósito y objetivos de esta investigación fueron investigar y comprender mejor las formas en las que la raza y el género generan importantes consecuencias en la práctica del liderazgo aplicado. Se realiza un estudio de caso cualitativo con contra-historia con un enfoque teórico-crítico sobre raza,. Los autores analizan datos sobre dos líderes educativos de ascendencia mexicana en los EE.UU.: uno director de una escuela K-6 latina y el otro, director de una universidad chicana. Los hallazgos evidencian rasgos de identidad positiva de los líderes que permite la puesta en práctica de un liderazgo equitativo y socialmente justo entre los participantes del estudio. Estos hallazgos son novedosos y especialmente relevantes en EEUU y en el resto de países donde viven un alto número de descendientes de latinos y mexicanos. Las estrategias empleadas por los participantes sugieren alternar formas de liderazgo no consideradas ni en la investigación ni en la literatura. Los autores discuten las evidencias encontradas que definen la teoría emergente del liderazgo crítico aplicado (ACL). Por último, se aportan directrices para su aplicación en diferentes contextosA finalidade e objetivos desta pesquisa foram investigar e entender melhor as maneiras em que raça e gênero têm implicações importantes para a prática da liderança aplicada. Foi feito um estudo de caso qualitativo com contra-história é com uma abordagem teórica e crítica à raça e gênero. Os autores analisaram dados de dois líderes educacionais de ascendência mexicana em EUA: um director de um K-6 escola latina e no outro, diretor do faculdade chicana. Os resultados mostram traços de identidade positiva de líderes, que permite a implementação de uma liderança justa e socialmente justa entre os participantes do estudo. Estes resultados são novos e particularmente relevante em os EUA e outros países onde vivem um elevado número de descendentes de latinos e mexicanos. As estratégias empregadas pelos participantes sugerem formas alternativas de liderança não considerado ou pesquisa ou literatura. Os autores discutem as evidências encontradas que definem a teoria emergente de liderança crítica aplicada (ACL). Finalmente, orientações para a aplicação em diferentes contextos são fornecido

Indigenous Urban School Leadership: A Critical Cross-Cultural Comparative Analysis of Educational Leaders in New Zealand and the United States

This qualitative inquiry compares the practice of one Māori primary school leader of urban education for indigenous multicultural multilingual learners in New Zealand (NZ), to research on the practices of nine educational leaders of colour in the United States (US). This study identifies and compares leadership practices for leaders struggling with ways to positively impact learner outcomes in similar settings (e.g., UK, Canada). From a critical comparative perspective, this school principal shares her leadership practice and lessons learned to inform leadership practice in similarly multifaceted urban settings. This research is undertaken by a collaborative cross-cultural team of educational leaders and scholars from the US and NZ, from the local university and urban primary school. The research team comprises multiple perspectives, the basis for global comparative discourse on school leadership. This contribution offers a cross-cultural model, framework, and way of doing educational research to increase understanding of leadership in different societies

Two new Pentaphylacaceae species from southern Central America

© 2016, The New York Botanical Garden. We describe two new species of Pentaphylacaceae: Freziera monteverdensis from Costa Rica and Ternstroemia liesneriana from Panama. Line drawings, color images of living plants for one of the species, and discussions comparing the new species to their presumed closest relatives are provided

Reinforced SIL-1 micromembranes integrated on chip: APPLICATION to CO2 separation

A novel 4-step microfabrication process is proposed in this work to prepare arrays of c-oriented silicalite (SIL-1) micromembranes on customized silicon nitride (Si3Nx) microsieves. The arrays are integrated on chip and their overall porosity values can be tuned from 1.6% to 19.9%. A low stress Si3Nx microfabricated sieve has been used as support to reinforce via mechanical interlocking and to reduce the effects of the residual stress during membrane processing. The secondary hydrothermal growth over the Si3Nx microsieves also changes the SIL-1 chemistry, improving its affinity towards CO2 adsorption. As a result, the SIL-1/Si3Nx micromembranes integrated on chip facilitate the preferential permeation of CO2 in CO2/H2 mixtures, showing a maximum CO2/H2 separation factor of 16.9 and a CO2 permeance of 8.2×10-7 mol m-2 s-1 Pa-1 at ambient conditions

Performance of malolactic fermentation by inoculation of selected Lactobacillus plantarum and Oenococcus oeni strains isolated from Rioja red wines

Malolactic fermentations (MLF) of wines inoculated with selected lactic acid bacteria strains of the species Oenococcus oeni and Lactobacillus plantarum were studied and compared with spontaneous MLF. Bacterial populations were monitored along the whole process of MLF and bacteria identifications were carried out at species and strain level. Macrorestriction analysis with SfiI endonuclease and subsequent PFGE was carried out in order to identify O. oeni individual strains. L. plantarum active lyophila did not survive competing with the indigenous microbiota in a wine with 15.3 % (vol/vol) alcohol, whereas the selected O. oeni strains carried out wine MLF. The highest production of histamine took place during MLF in those wines that underwent spontaneous MLF with a mixed population of indigenous strains. The lowest levels of histamine were obtained with the selected commercial O. oeni strain that succeeded 100 % over the indigenous microbiota. Results indicate that development of MLF leaded by selected O. oeni active lyophila provides negligible histamine levels in red wines of quality that can be submitted to subsequent ageing in wood.

Foliar Application of Several Nitrogen Sources as Fertilisers to Tempranillo Grapevines: Effect on Wine Volatile Composition

Foliar nitrogen applications to the vineyard make it possible to improve grape and wine phenolic and amino acid concentration. However, to our knowledge, there is little information about their impacts on the volatile composition of wine. Therefore, the aim of this work was to evaluate the effects of the application of several nitrogen sources in Tempranillo vineyards on wine volatile composition during the first season. Subsequently, two dosages of phenylalanine and urea were applied to the vineyard with the aim of evaluating their effect on wine volatile composition. The results show that the different nitrogen sources applied to the grapevines during the first season did not affect higher alcohols, fatty acids, esters and other volatile compounds in the wines. The two dosages of phenylalanine and urea applied to the vineyard during the second vintage barely affected wine volatile composition. Consequently, this study shows that foliar nitrogen treatments in vineyards did not modify the wine aromatic profile

Pattern formation from consistent dynamical closures of uniaxial nematic liquid crystals

Pattern formation in uniaxial polymeric liquid crystals is studied for different dynamic closure approximations. Using the principles of mesoscopic non-equilibrium thermodynamics in a mean-field approach, we derive a Fokker-Planck equation for the single-particle non-homogeneous distribution function of particle orientations and the evolution equations for the second and fourth order orientational tensor parameters. Afterwards, two dynamic closure approximations are discussed, one of them considering the relaxation of the fourth order orientational parameter and leading to a novel expression for the free-energy like function in terms of the scalar order parameter. Considering the evolution equation of the density of the system and values of the interaction parameter for which isotropic and nematic phases coexist, our analysis predicts that patterns and traveling waves can be produced in lyotropic uniaxial nematics even in the absence of external driving.Comment: 34 pages, 7 figure