RSVP in orbit: Identification of single and dual targets in motion

Three experiments using rapid serial visual presentation (RSVP) tested participants' ability to detect targets in streams that are in motion. These experiments compared the ability to identify moving versus stationary RSVP targets and examined the attentional blink with pairs of targets that were moving or stationary. One condition presented RSVP streams in the center of the screen; a second condition used an RSVP that was orbiting in a circle, with participants instructed to follow the stream with their eyes; and a third condition had participants fixate in the middle while observing a circling RSVP stream. Relative to performance in stationary RSVP streams, participants were not markedly impaired in detecting single targets in RSVP streams that were moving, either with or without instructions to pursue the motion. In streams with two targets, a normal attentional blink effect was observed when participants were instructed to pursue the moving stream. When participants had to maintain central fixation as the RSVP stream moved, the attentional blink was nearly absent even when a trailing mask was added. We suggest that the reduction of the attentional blink for moving RSVP streams may reflect a reduced ability to perceive the temporal boundaries of the individual items

A role for coaching to support leadership development? The experiences of female Arab leaders: An interpretative phenomenological analysis

Objectives: This study aimed to explore how eight female leaders from four Arab countries experienced their leadership journey, and to consider a potential role for coaching in that developmental journey.Design and Method: A qualitative design was applied to explore the participants’ experiences. Data collection was through semi-structured interviews, and interpretative phenomenological analysis (IPA) was used to analyse the data.Results: Four themes emerged:(1) Acontinuous, exhausting struggle; (2) Fulfilment and pride in achievements;(3) Adoption of coping strategies;(4) Engagementin personal and professional development.Conclusion: The findings suggest that coaching could be an appropriate intervention to increase the individual leadership potential of females in the Arab world

Constraints to liberty of movement and attachment styles significantly account for well-being in three Palestinian samples

Background: Political violence and constraints on liberty of movement can have consequences for health and well-being but affect individuals differently. Objective: In three Palestinian samples, we sought to examine the relationship between key environmental and psychological factors and general and mental health, including the previously unexplored roles of constraints to liberty of movement and attachment orientation. Method: Participants (n=519) in the Occupied Palestinian Territories and Jordan completed questionnaires on constraints to liberty of movement (4-item scale devised by the authors for the purpose of the current study), attachment insecurity (Experiences in Close Relationships Scale – Short Form, Wei et al., 2007), resource loss (Conservation of Resources Evaluation scale, Hobfoll & Lilly, 1993), experience of political violence (Experience and fear of political violence, Hobfoll et al., 2011), demographics, general health (adapted from DeSalvo et al, 2006) and mental health (PHQ4 for depression, and Ballenger et al.’s, (2001) 2 item screener for anxiety). All measures were translated from English to Arabic and back-translated into English. Results: Findings from regression and mediation analyses indicated that (i) differences in general and mental health among Palestinians in the Occupied Palestinian Territories and the diaspora in Jordan, can be explained by the assessed constructs; (ii) constraints to liberty of movement, attachment avoidance, and resource loss significantly accounted for poor general health; (iii) constraints to liberty of movement, attachment anxiety, and resource loss significantly explained general anxiety symptoms; and (iv) attachment anxiety, resource loss, and experience of political violence significantly explained depression symptoms. Conclusion: Findings have theory-building implications for psychological models of human flourishing and suffering, suggesting that they are incomplete without consideration of liberty as a context, as well as implications for policymakers and champions of global health initiatives, as they highlight the psychological effects of constraints to liberty of movement on health

Off-Shore wind potential estimation along the coast of Chile by using scatterometer and Reanalysis data

Revista oficial de la Asociación Española de Teledetección[EN] This work presents the first offshore wind potential estimation over the coast of Chile using long term data series from “QuikSCAT (V04) wind vectors” and ERA-interim’s wind product between 1999-2009 and 1979-2012, respectively. Weibull and Rayleigh’s distribution were used to adjust the data series from the study period to find the probability density function, mean wind speed, maximum and minimum from each data series adjusted per pixel. Power generation and a capacity factor were estimated for the whole scene using three wind turbine models corresponding to 3.6, 5.0 and 8.0 MW. The images obtained from the data processing were grouped into three different wind power zones named (A) located up north, (B) in the center and (C) down south-center. The mean capacity factors are higher than 20%, moreover B and C areas have an average of 36%. This work shows the high wind power potential to generate electricity by using wind off-shore technologies along the coast of Chile.[ES] En este trabajo se presenta la primera estimación del potencial eólico offshore de Chile a partir de información de viento proveniente del producto “QuikSCAT (V04) wind vectors” y datos de velocidad del viento del reanalysis ERA-interim para el periodo 1999-2009 y 1979-2012 respectivamente. Ambos conjuntos de datos fueron ajustados a las distribuciones de Weibull y Rayleigh para encontrar la probabilidad de ocurrencia y las medias, mínimas y máximas de cada serie de tiempo ajustada por pixel. Para toda la escena se estimaron los valores de generación eléctrica y factor de planta usando tres turbinas aerogeneradores de 3,6, 5,0 y 8,0 MW. Las imágenes resultantes fueron agrupadas en tres diferentes zonas de potencial a lo largo de Chile, denominadas (A) en el extremo norte, (B) en el centro y (C) en el centro-sur. Los factores de planta promedio son superiores al 20%, siendo un 36% para las zonas B y C. Esto demuestra el alto potencial para la generación de energía eléctrica a base de turbinas eólicas frente a las costas de Chile.Esta publicación ha sido en parte financiada por el Programa U-INICIA Concurso de Reforzamiento de Inserción Productiva de Nuevos Académicos VID 2012; código U-INICIA 4/0612 Universidad de Chile. Programa U-Viajes, VID-UChile, Beca Santander Universidad de Chile 2013 para jóvenes investigadores. Los autores agradecen a NASA Ocean Vector Winds Science Team y a ERA-interim Reanalysis por lo datos entregados.Mattar, C.; Villar-Poblete, N. (2014). Estimación del potencial eólico off-shore en las costas de Chile utilizando datos de escaterómetro y Reanalysis. Revista de Teledetección. (41):49-58. https://doi.org/10.4995/raet.2014.2787SWORD495841Yaniktepe, B., Koroglu, T., & Savrun, M. M. (2013). Investigation of wind characteristics and wind energy potential in Osmaniye, Turkey. Renewable and Sustainable Energy Reviews, 21, 703-711. doi:10.1016/j.rser.2013.01.00

Estimation of vegetation biophysical parameters in grasslands and crops in Chile through hemispheric digital photography by a GoPro camera

Revista oficial de la Asociación Española de Teledetección[EN] The estimation of the biophysical parameters of vegetation such as LAI (Leaf Area Index), FAPAR (Fraction of Absorbed Photosynthetically Active Radiation) and FCOVER (Fraction of Green Vegetation) have many climatic, hydrologic, ecosystem and silvo-agricultural applications. Despite the various satellite products that estimate these parameters continuously and globally, it’s necessary to continue generating in situ estimations to validate these remote data. It’s in this context where Digital Hemispheric Photography (DHP) technique stands out as being one of the most accurate an adaptable to operate continuously with diverse photographic equipment and field scenarios. The objective of this paper is to estimate effective LAI (LAIeff), true LAI (LAItrue), FAPAR and FCOVER through the DHP method on several agricultural land covers in Chile, between the years 2015 and 2016 using a GoPro camera and the CAN-EYE software to process hemispheric photographs. The results obtained were initially compared with those provided by a CANON EOS 6D camera mounted together with a SIGMA 8mm F3.5-EX DG fisheye lens and subsequently with satellite products provided by the Copernicus Global Land service, derived from PROBA-V mission at 333 m2 spatial resolution. The comparison between the CANON and GoPro shows similar values and R2 over 0,72 for all parameters. The comparison with PROBA-V resulted in values over 0,52 of R2 for the parameters, and similar multitemporal patterns. It’s concluded that it’s possible to estimates LAIeff, FAPAR and FCOVER like other fish eyes cameras. Concerning PROBA-V, except for FAPAR, the estimates with the GoPro do not show much correlation. In both campaigns significant discrepancies were observed in the LAItrue, which could be related to the calculation of CAN-EYE canopy clumping with the characteristics of the camera itself.[ES] La estimación de los parámetros biofísicos de la vegetación como el LAI (Leaf Area Index, FAPAR (Fraction of Absorbed Photosynthetically Active Radiation) y FCOVER (Fraction of Green Vegetation) tienen una gran cantidad de aplicaciones climáticas, hidrológicas, ecosistémicas y en sistemas silvoagropecuarios. A pesar de los diversos productos satelitales que estiman estos parámetros de forma continua y global, es necesario seguir generando estimaciones in situ para validar estos datos remotos. Es en este escenario en donde la técnica de Fotografía Digital Hemisférica (DHP) destaca por ser una de las más precisas y adaptables para funcionar de forma continua en diversos equipos fotográficos y escenarios de campo. El objetivo de este estudio es estimar el LAI efectivo (LAIeff), LAI verdadero (LAItrue), FAPAR y FCOVER a través del método DHP sobre diversas cubiertas agrícolas de Chile, entre los años 2015 y 2016 utilizando la cámara fotográfica GoPro y el software CAN-EYE para procesar las fotografías hemisféricas. Los resultados obtenidos se compararon inicialmente con los suministrados por una cámara CANON EOS 6D montada junto a un lente ojo de pez SIGMA 8mm F3.5-EX DG y posteriormente con productos satelitales proporcionados por el servicio Copernicus Global Land, derivado de la misión PROBA-V a 333 m2 de resolución espacial. La comparación entre las cámaras CANON y GoPro muestra estimaciones similares y valores de R2 sobre 0,72 para todos los parámetros. La comparación con PROBA-V dio lugar a valores sobre 0,52 de R2 para los parámetros y estimaciones multitemporales con patrones similares. Se concluye que con la cámara GoPro, es posible generar estimaciones de LAIeff, FAPAR y FCOVER de forma similar a otras cámaras ojos de pez. Respecto a PROBA-V, a excepción de FAPAR, las estimaciones con la GoPro no muestran mucha correlación. En ambas campañas se observaron discrepancias significativas del LAItrue lo que se podría relacionar al cálculo del agrupamiento de la canopia de CAN-EYE sobre las características propia cámara.Los autores agradecen el financiamiento parcial del proyecto Conicyt – Fondecyt Iniciación 11130359 “Estimating the Surface soil moisture at regional scale by using a synergic optical-passive microwave approach and remote sensing data”. Al Earth Observation Laboratory (EOLAB) y al proyecto IMAGINES, junto con la libre entrega de datos PROBA-V CopernicusUribe, D.; Mattar, C.; Camacho, F. (2018). 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Assessment of RapidEye vegetation indices for estimation of leaf area index and biomass in corn and soybean crops. International Journal of Applied Earth Observation and Geoinformation, 34(1), 235-248. https://doi.org/10.1016/j.jag.2014.08.002Lang, M., Kuusk, A., Mõttus, M., Rautiainen, M., Nilson, T. 2010. Canopy gap fraction estimation from digital hemispherical images using sky radiance models and a linear conversion method. Agricultural and Forest Meteorology, 150(1), 20-29. https://doi.org/10.1016/j.agrformet.2009.08.001Latorre, C., Camacho, F., Mattar, C., Santamaría-Artigas, A., Leiva-Büchi, N., Lacaze, R. 2016. Obtención de mapas verdad-terreno de LAI, FAPAR y cobertura vegetal a partir de imágenes del satélite chileno FASat-C y medidas in-situ en la zona agrícola de Chimbarongo, Chile, para la validación de productos de satélite. 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Validation of PROBA-V GEOV1 and MODIS C5 & C6 fAPAR Products in a Deciduous Beech Forest Site in Italy. Remote Sensing, 9(2), 126. https://doi.org/10.3390/rs9020126Olivera-Guerra, L., Mattar, C., Galleguillos, M. 2014. Estimation of real evapotranspiration and its variation in Mediterranean landscapes of central-southern Chile. International Journal of Applied Earth Observation and Geoinformation, 28(1), 160-169. https://doi.org/10.1016/j.jag.2013.11.012Olivera-Guerra, L., Merlin, O., Mattar, C., Duran-Alarcon, C., Santamaria-Artigas, A., Stefan, V. 2015. Combining meteorological and lysimeter data to evaluate energy and water fluxes over a row crop for remote sensing applications. International Geoscience and Remote Sensing Symposium (IGARSS), 2015-Novem, 4649- 4651. https://doi.org/10.1109/IGARSS.2015.7326865Paul M. Rich, 1990. Characterizing Plant Canopies with Hemispherical Photograph s. 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Genotype × environment interaction for long-yearling weight in Canchim cattle quantified by reaction norm analysis.

The objective of this study was to investigate the presence of genotype × environment interactions (G×E) for long-yearling weight in Canchim cattle (5/8 Charolais + 3/8 zebu) in Brazil using reaction norms (RN). The hierarchical RN model included the fixed effect of age of the animal (linear coefficient) and random effects of contemporary groups and additive animal genetic intercept and slope of the RN and contemporary group effects as random effects. Contemporary groups as the most elemental representation of management conditions in beef cattle were chosen to represent the environmental covariate of the RN. The deviance information criteria demonstrated that a homoskedastic residual RN model provided a better data fit compared with a heteroskedastic counterpart and with a traditional animal model, which had the worst fit. The environmental gradient for long-yearling weight based on contemporary group effects ranged from ?105 to 150 kg. The additive direct variance and heritability estimates increased with increasing environmental gradient from 74.33 ± 22.32 to 1,922.59 ± 258.99 kg2 and from 0.08 ± 0.02 to 0.68 ± 0.03, respectively. The high genetic correlation (0.90 ± 0.03) between the intercept and the slope of the RN shows that animals with the greatest breeding values best responded to environmental improvement, characterizing scale effect as the source of G×E for long-yearling weight. The phenotypic plasticity demonstrated by the slope of the RN of the animal indicates the possibility to change genotype expression along the environmental gradient through selection. The results demonstrate the importance of accounting for G×E in the genetic evaluation of this population

Interação genótipo-ambiente para peso ao sobreano em alguns estados brasileiros e em clusters de municípios do estado de São Paulo em bovinos da raça Canchim.

Foram analisados dados de rebanhos Canchim pertencentes a alguns estados do Brasil (IGA1) e clusters de municípios paulistas (IGA2) para a investigação da presença de interação genótipo-ambiente (IGA) para a característica peso ao sobreano (PS). Duas investigações distintas foram realizadas para os diferentes ambientes (IGA1 e IGA2) por meio da comparação de dois modelos sugeridos em cada ambiente, um com o efeito aleatório de touro-ambiente e o outro sem este efeito. Para o estudo no ambiente IGA1 foi constatada a presença da IGA, indicando alteração significativa no desempenho de PS dos animais conforme a região em que foram avaliados. No estudo no ambiente IGA2 não foi encontrada diferença significativa entre os desempenhos de PS nos clusters paulistas, sugerindo não haver IGA entre os municípios analisados. No entanto, no estudo de IGA2 houve variação entre os modelos das estimativas das variâncias genéticas, de ambiente e fenotípicas, o que não permitiu descartar a possibilidade da presença da IGA

Utilização de técnicas estatísticas multivariadas para definição de ambiente de produção do peso ao sobreano para o estudo da interação genótipo-ambiente em bovinos Canchim.

As respostas diferentes de genótipos às variações ambientais são investigadas nos estudos de interação genótipo-ambiente. A definição de ambiente nesses estudos ainda é um desafio, pois muitos fatores não genéticos podem causar efeito sobre a expressão de um conjunto de genes. Neste estudo, com as técnicas de estatística multivariada foram definidos ambientes de produção de bovinos Canchim, por meio de variáveis ambientais, formando grupos homogêneos de municípios do estado de São Paulo com informações de peso ao sobreano desta raça. As técnicas de Agrupamento Hierárquico e não Hierárquico foram eficientes para a simplificação e formação de quatro clusters homogêneos com membros de municípios paulistas, e heterogêneos entre si. Já, a técnica de componentes principais (CP) permitiu discriminar para cada cluster os fatores ambientais mais relevantes em sua formação, através de dois CP que preservaram 81,52% da variabilidade contida no conjunto das variáveis ambientais originais. As técnicas de estatística multivariada foram, portanto, ferramentas eficientes para discriminar ambientes de produção em estudos da interação genótipo-ambiente de bovinos Canchim