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Work & Stress: An International Journal of Work, Health & Organisations Do demands and resources affect target's and perpetrators' reports of workplace bullying? A two-wave cross- lagged study
No full textLearning to Guide Random Tree Planners in High Dimensional Spaces
No full textFig. 1 . Example paths for a mobile manipulation platform computed with RRT-Connect Abstract-In this paper we present the projection and bias heuristic (PBH), a motion planning algorithm that makes use of low-dimensional projections to improve sampling-based planning algorithms. In contrast to other state-of-the-art methods, we do not assume that projections are either random or given by an expert user. Rather, our goal is to learn projections such that planning on them improves the efficiency and the quality of solutions. We present both, a method to learn effective projections and a sampling algorithm that makes use of them. We show that our approach can be easily integrated into popular sampling-based planners. Extensive experiments performed in simulated environments demonstrate that our approach produces paths that are in general shorter than those obtained with state-of-the-art algorithms. Moreover, it generally requires less computation time
Seasonal and Inter-annual Variability of Chlorophyll-a in the Arabian Sea from SeaWiFS Data
No full textAbstract This study utilizes monthly mean chlorophyll-a concentration (Chl-a) and sea surface temperature (SST) retrieved from Sea-viewing Wide Field-of-vie
Castanea sativa Mill. Flowers amongst the Most Powerful Antioxidant Matrices: A Phytochemical Approach in Decoctions and Infusions
No full textInfusions and decoction of chestnut tree flowers have been used for different medical purposes, but their phytochemical profile and antioxidant activity are still mostly unknown. Herein, decoctions and infusions of flowers from the two most appreciated chestnut cultivars (longal and judia) in Trás-os-Montes, Portugal, were prepared and characterized with regard to their content in free sugars, organic acids, and phenolic compounds, such as flavonoids and hydrolyzable tannins, and their antioxidant activity. Overall, the decoction of the cultivar judia was the sample with both the highest quantity of flavonoids and antioxidant activity. The phenolic compound with the highest abundance in all samples was trigalloyl-HHDP-glucoside, followed by pentagalloyl glucoside. The sample with the highest quantity of total phenolic compounds was judia infusion, closely followed by longal decoction, which also gave the highest quantities of ellagitannins. Regarding sugars and organic acids, the profiles were more similar. These results corroborate ancestral claims of the health benefits of infusions and decoctions of chestnut flowers
Polarization rotation in semiconductor bending wave-guides: A coupled-mode theory formulation
No full textAbstract: Earlier it was observed that polarization rotation in an AWG built from birefringent waveguides can result in sidelobes in its response. This effect was measured in a polarization sensitive AWG with an orthogonal layout. Now we investigate through detailed simulation whether this effect also exists in polarization desensitised AWGs. It is shown that a dispersion compensated AWG does not suffer from a polarization sidelobe. Alternatively, the AWG can be designed to minimize polarization rotation to suppress the sidelobe
NON-INTRUSIVE COMBUSTION DIAGNOSTICS FOR MEMS
No full textAbstract: A non-intrusive diagnostic technique based on FT-IR spectroscopy for making temperature measurements in MEMS devices is improved and demonstrated in a silicon walled micro-combustor. The technique takes advantage of the fact that CO 2 (a natural combustion product) has a temperature sensitive absorption band in the mid-IR region. Temperature is measured by using a statistical narrow band model to fit measured absorption spectra. Since the functional form of the temperature profile across the flow channel is known from previously developed analytical models for flames in channels, the fitting can be done by iteratively adjusting three parameters controlling the shape of the temperature profile. The direction of heat flow in the burner is determined from the gradient of the temperature distribution in the gas and measurements of heat loss to the environment. The temperature measurements are repeated for a variety of equivalence ratios and flame speeds and are used to calculate the total heat recirculation
European Drying Conference -EuroDrying
No full textAbstract: Designing efficient dryers and achieving efficient drying processes are two key issues from an industrial point of view. A 3-step methodology is proposed to help engineers and industrials to better understand the real critical parameters of a specific dehydration process. The first step implies carrying out experimental drying kinetics and modeling of experimental data. The second step uses general linear equations to extend the drying kinetics to the whole studied domain. Finally, an ortogonal array based simulation (Taguchi approach) is use to reduce the effect of the variation of the process and product parameters on the process performance
Making influenza vaccination mandatory for health care workers: the views of NSW Health administrators and clinical leaders
No full textAbstract: The challenges of maintaining high influenza vaccination rates in health care workers have focused worldwide attention on mandatory measures
Modeling the Demand for and Value of OHV Recreation in Tennessee
No full textAbstract: This analysis is an extension of research undertaken for the Study Committee on OffHighway Vehicles to assess the importance of off-highway vehicle recreation to the state of Tennessee. This research aims to address a need for economic modeling focused on off-highway vehicle (OHV) recreation. With the rise in popularity of this sport and the shortage of places to participate, advanced research techniques are needed to ensure the efficient and effective management of OHV recreation in Tennessee. Travel cost techniques are used to model the demand for and value of OHV recreation. A conventional welfare measure, maximum willingness to pay, is estimated from travel cost information