8,250 research outputs found
The role for basal resistance in non-host interactions
A construção da imagem do indivĂduo na polĂtica atravĂ©s do fotojornalismo brasileiro. Análise do percurso de construção da imagem de Dilma Rousseff da ditadura militar brasileira ao Facebook
Building Research-Informed Teacher Education Communities: A UCET Framework
©UCET December 201
Lost and found: the radial quantum number of Laguerre-Gauss modes
We introduce an operator linked with the radial index in the Laguerre-Gauss
modes of a two-dimensional harmonic oscillator in cylindrical coordinates. We
discuss ladder operators for this variable, and confirm that they obey the
commutation relations of the su(1,1) algebra. Using this fact, we examine how
basic quantum optical concepts can be recast in terms of radial modes.Comment: Some minor typos fixed
Plan de seguridad industrial y salud ocupacional, para el control de riesgos en la Empresa Productos Lácteos Naturales S.A.C. - Chiclayo 2016
La actual investigación, tiene como finalidad, formular un Plan SSO, para el Control de Riesgos en la Empresa de Productos Lácteos Naturales S.A.C en base a los requisitos exigidos por la ley Nº 29783, por ello se utilizó los (11)trabajadores y las(8) áreas del proceso de Queso Dietético. Los datos fueron recabados con ayuda de instrumentos por separado. Mediante el programa Excel,se utilizó un Check Listas y conocer la situación actual de la empresa Productos Lácteos Naturales SAC, donde se llegó al término que no cuenta con un Sistema SST, la evaluación propone la elaboración de un Plan SST, basado en los requisitos exigidos por la ley de Seguridad en el Trabajo Ley Nº 29783. Se utilizó tablas de Identificación de Peligros, Evaluación y Control de Riesgos –Matriz IPERC, para obtener el porcentaje de nivel de Riesgo. Para obtener el Nivel de conocimiento de los trabajadores se utilizó unas encuestas relacionada a(SST)
Bounded real lemmas for positive descriptor systems
A well known result in the theory of linear positive systems is the existence of positive definite diagonal matrix (PDDM) solutions to some well known linear matrix inequalities (LMIs). In this paper, based on the positivity characterization, a novel bounded real lemma for continuous positive descriptor systems in terms of strict LMI is first established by the separating hyperplane theorem. The result developed here provides a necessary and sufficient condition for systems to possess H?H? norm less than ? and shows the existence of PDDM solution. Moreover, under certain condition, a simple model reduction method is introduced, which can preserve positivity, stability and H?H? norm of the original systems. An advantage of such method is that systems? matrices of the reduced order systems do not involve solving of LMIs conditions. Then, the obtained results are extended to discrete case. Finally, a numerical example is given to illustrate the effectiveness of the obtained results
Two important exceptions to the relationship between energy density and fat content: food with reduced-fat claims and high-fat vegetable-based dishes
Objective: To test the hypothesis that many foods with reduced-fat (RF) claims are relatively energy-dense and that high-fat (HF) vegetable-based dishes are relatively energy-dilute.Design: Nutrient data were collected from available foods in Melbourne supermarkets that had an RF claim and a full-fat (FF) equivalent. Nutrient analyses were also conducted on recipes for HF vegetable-based dishes that had more than 30% energy from fat but less than 10% from saturated fat. The dietary intake data (beverages removed) from the 1995 National Nutrition Survey were used for the reference relationships between energy density (ED) and percentage energy as fat and carbohydrate and percentage of water by weight.Statistics: Linear regression modelled relationships of macronutrients and ED. Paired t-tests compared observed and predicted reductions in the ED of RF foods compared with FF equivalents.Results: Both FF and RF foods were more energy-dense than the Australian diet and the HF vegetable-based dishes were less energy-dense. The Australian diet showed significant relationships with ED, which were positive for percentage energy as fat and negative for percentage energy as carbohydrate. There were no such relationships for the products with RF claims or for the HF vegetable-based dishes.Conclusion: While, overall, a reduced-fat diet is relatively energy-dilute and is likely to protect against weight gain, there appear to be two important exceptions. A high intake of products with RF claims could lead to a relatively energy-dense diet and thus promote weight gain. Alternatively, a high intake of vegetable-based foods, even with substantial added fat, could reduce ED and protect against weight gain.<br /
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