An important QoS factor for wireless network planning is delay. We should provide enough resources (bandwidth) for conveying the traffic load. Next generation wireless networks is going to be an all IP network. In this path, voice will be changed to packet. In this paper we introduce a queuing model and a radio resource management algorithm which maximize the system throughput (users), then com...

Mobile Ad Hoc network is a multi-hop temporary autonomous system of mobile nodes with wireless transmitters and receivers without the aid of pre-established network infrastructure. With a great deal of different applications increasing, it needs to provide stable communication for such network. In this paper, a new routing algorithm is proposed which can dynamically estimate delay variety and c...

BACKGROUND The widespread incorporation of behavioral support interventions into exercise trials has sometimes caused confusion concerning the primary purpose of a trial. The purpose of the present paper is to offer some conceptual and methodological distinctions among three types of exercise trials with a view towards improving their design, conduct, reporting, and interpretation. DISCUSSION...

Sufficiently inclusive observables in the decay of the tau lepton can be calculated using the methods of perturbative QCD. These include the asymmetry parameter Aτ that determines that angular distribution of the total hadron momentum in the decay of a polarized tau. It should be possible to measure Aτ accurately using existing data from LEP. Reliable estimates of theoretical errors are essenti...

We have derived constraints on the tau neutrino mass and fourth generation mixing from an analysis of the partial widths of tau lepton decays, in particular: τ−→ e−ν̄eντ , τ −→μ−ν̄μντ , τ →π −ντ , and τ →K −ντ . We present predictions for the tau decay widths, allowing for a non-zero tau neutrino mass, mντ , and for mixing with a neutrino of mass mνL > MZ/2, which is parametrised using a Cabibbo-...

OBJECTIVE Although crossover trials enjoy wide use, standards for analysis and reporting have not been established. We reviewed methodological aspects and quality of reporting in a representative sample of published crossover trials. METHODS We searched MEDLINE for December 2000 and identified all randomized crossover trials. We abstracted data independently, in duplicate, on 14 design criter...

We analyze well-posedness of a scattering problem of time-harmonic electromagnetic waves by periodic structures with sign-changing coefficients. Transmission problems for Maxwell’s equations with sign-changing coefficients in bounded domains have been recently studied by Bonnet-Ben Dhia and co-workers in the so-called T -coercivity framework. In this article we generalize such framework for per...

BACKGROUND Poor recruitment and retention of participants in randomised controlled trials (RCTs) is problematic but common. Clear and detailed reporting of participant flow is essential to assess the generalisability and comparability of RCTs. Despite improved reporting since the implementation of the CONSORT statement, important problems remain. This paper aims: (i) to update and extend previo...

We discuss some rare Z decay signatures associated with extensions of the Standard Model with spontaneous lepton number violation close to the weak scale. We show that single-photon Z decays such as Z → γH and Z → γJJ where H is a CP-even Higgs boson and J denotes the associated CP-odd Majoron may occur with branching ratios accessible to LEP sensitivities, even though the corresponding neutrin...

This article illuminates the essence of Neonatal Intensive Care Unit (NICU) nurses' attitudes in skin-to-skin care (SSC) practice for preterm infants and their parents. Health care providers are in a unique position to influence the dynamic between infants and parents, and SSC affects both partners in the dyad. The design is descriptively phenomenological in terms of reflective lifeworld approa...