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Browsing by Issue Date, starting with "2017-01-23"

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  • Association between treatment adherence and quality of life among overweight adolescents
    Publication . Sousa, Pedro Miguel Lopes; Gaspar, Pedro; Fonseca, Helena; Gaspar, Filomena
    Overweight is an extra burden for adolescent development and can trigger severe physical and psychosocial problems. This cross-sectional correlational study aimed to analyze the association between treatment adherence and obesity-related quality of life among overweight adolescents. The sample consisted of 94 adolescents attending a specialized Pediatric Obesity Clinic in Portugal, 48.94% of whom were boys and 51.06% girls, with a median age of 14.17 years (SD = 1.51). A positive correlation was found between obesity-related quality of life and adherence to weight control. The influence of parents and caregivers on the adherence to weight control is significantly associated with increased physical comfort, better social life and family relations. These results highlight the importance of behavioral change and adherence to weight control as pillars of a better quality of life among overweight adolescents. Obesity management programs need to focus on multiple criteria of treatment effectiveness, such as obesity-related quality of life.
    2017-01-23Journal article Restricted access Show more
  • Simplified RET model derived from path loss and directional spectrum measurements in vegetation media at 11.2 and 20 GHz
    Publication . Caldeirinha, Rafael F. S.; Fernandes, Telmo; Richter, Jürgen; Al-Nuaimi, Miqdad O.
    This study presents a simplified radiative energy transfer (RET) model derived from path loss and directional spectrum measurements in vegetation media at 11 and 20 GHz. Thus, a simplified extraction procedure for the inputs parameters based on the method foreseen by the international telecommunications union - recommendation (ITU-R) P.833-8, however for isolated vegetation volumes, is proposed. Results for specific measurements aimed at the extraction of the RET model parameters are subsequently presented and discussed. The extraction method relies on a limited set of propagation measurements to find and optimise the RET input parameters. Specific measurements of the received signal directional profile are used to show the applicability of the method. This parameter evaluation method is tested and assessed based on the received signal directional profile measurements performed in Populous trees at 11.2 and 20 GHz.
    2017-01-23Journal article Restricted access Show more