A compact printed fractal antipodal bow-tie antenna is designed and implemented to simultaneously cover the operations in the C, X, and Ku-bands. It is demonstrated that by addition of small fractal elements at the sides of hexagonal arms of the bow-tie, a wide operating frequency range of 3.3 to 19.1 GHz can be covered while antenna size is only 30×34×1.2 mm3. In order to match the antenna to ...

An ultra-wideband (UWB) self-complementary planar bow-tie antenna (SCPBTA) is proposed. The antenna consists of a printed conical horn-shaped (CHS) radiator and a counterpart CHS slot etched on a rectangular ground plane. The printed CHS radiator is connected directly to the 50Ω microstrip line by bending the end portion of the feed line. As a result, the antenna has a simple structure which do...

background: excessive and uncontrolled television watching by children predisposes them to some risks such as developmental, social and psychological disorders. parents play an important role in nurturing their children and controlling the factors affecting their health. the aim of this study was to determine the impact of health education programs on parents' supervision skills to control thei...

Many young children have televisions in their bedrooms, which may influence the relationship between parental estimate and objective measures of child television usage/week. Parental estimates of child television time of eighty 4-7 year old children (6.0 +/- 1.2 years) at the 75th BMI percentile or greater (90.8 +/- 6.8 BMI percentile) were compared to an objective measure of television time ob...

portraying women in the media is one of the main social and cultural issues especially on television. television commercials as a genre have ideas about goods and services, but it constructs a secondary discourse about society, culture and gender roles along the way. the main goal of this paper is to examine women’s readings of gender roles representation in iranian television commercials from ...

BACKGROUND Sedentary activities, such as watching television, may disrupt habituation to food cues, thereby increasing motivation to eat and energy intake. OBJECTIVE These experiments were designed to examine the effect of television watching on habituation of ingestive behavior in children. DESIGN In experiment 1, all children worked for access to cheeseburgers in trials 1-7 (habituating s...

BACKGROUND This survey determined the practices about television (video inclusive), videogames, and computer use in children and adolescents in Italy. METHODS A self-administered anonymous questionnaire covered socio-demographics; behaviour about television, videogames, computer, and sports; parental control over television, videogames, and computer. RESULTS Overall, 54.1% and 61% always at...