Transmit power control is a central technique for resource allocation and interference management in spread-spectrum wireless networks. With increasing popularity of spread-spectrum as a multiple access technique, there has been signiicant research in the area in recent years. While power control has been considered traditionally as a means to counteract the harmful eeect of channel fading, the...

Multimedia multicast/broadcast transmissions provide simultaneous access to a common service to the heterogeneous user equipments (UEs) with different device and channel characteristics. One of the major challenges to the service providers is the exponential growth of energy-constrained UEs. In this context, the optimization of multimedia multicast/broadcast transmissions that consider the cons...

This paper presents four optimization models to demonstrate that the optimization of software reliability within the available resources can be accomplished. The models help us find the optimal software system structure while considering basic information on reliability and cost of modules. Each model is applicable to a distinct situation. All four models maximize reliability while ensuring tha...

Program visualizations have the potential to convey information about the behavior of the programs they depict. However, program visualizations in use vary widely in their ability to convey the desired information. In this work we conduct a study of the " quality " of the visualizations, the ability of those visualizations to present information in a way that is both effective and efficient in ...

Observed child care quality and parent perceptions of child care quality received by children in poor (below Federal Poverty Line, FPL), low-income (between FPL and 200% of FPL), and non-low-income families were examined. Observations were completed in 359 centerand home-based child care programs in four Midwestern states and surveys were received from 1313 parents whose children were enrolled ...

Offering to multimedia applications an acceptable level of Quality of Service (QOS) is a challenging problem that need high performance mechanisms both in the network and the end systems. To provide the network with the level of service requested, QOS specification is a crucial phase. This phase is used not only for negotiations with the end system(s) but also indicating the way different media...

We present a novel approach for a combined homogenization and registration technique. Medical image data is often disturbed by inhomogeneities from staining, illumination or attenuation. State-of-theart approaches tackle homogenization and registration separately. Our new method attacks both troublemakers simultaneously. It is modeled as a minimization problem of a functional consisting of a di...

Background: Stroke affects the quality of life of patients and their families. Participation of the family in caring for these patients is inevitable. Implementing an empowerment program to increase knowledge, motivation, self-esteem and self-efficacy of patients leads to an improve in the quality of their life. Accordingly, this study aimed at determining the effect of a program based on the f...

Aims: Children and adolescents are more exposed to trauma due to their physiological conditions and growth process. After the discharge, the complications caused by trauma affect the quality of life of children and adolescents or their families. Perhaps the application of the discharge care plan will help in preventing these complications. Therefore, the present study was conducted with the aim...

the purpose of this study was to compare the effect of a walking (8wk) training program on quality, quantity and some physiological parameters related to sleep in old men. twenty elderly healthy men (age 72.4?7.24 years, height: 163.59?6.11 cm, weight 68.31?9.19kg) were selected randomly and were divided into two groups [walking (n=10) and control (n=10)]. the walking group exercised for eight ...