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Static mechanical properties of acrylic bone cements containing an organobismuth compound as a radiopacifier

The inclusion of triphenyl bismuth (TPB) as an alternative radiopacifier in bone cements with good tensile properties was reported. Using Servohydraulic Testing Machine in accordance with ISO 5833 standard using cylindrical specimens where the ratio of the length to the diameter is 2:1, the compression testing was performed. It was observed that the addition of TPB does not degrade the flexural or

Time hopping versus frequency hopping in ultrawideband systems

This paper analyzes frequency-hopping (FH) and time-hopping (TH) as multiple access format for ultrawideband communications. We apply the concept of "fourthegy", recently introduced by Subramanian and Hajek, to both TH and FH. We find that the design rules are different for FCC-compliant systems (where the power spectral density is limited) than for conventional systems (where the energy per bit i

SLM, a Framework for Session Layer Mobility Management

This paper describes a novel framework for managing connections to mobile hosts in the Internet. The framework, SLM, integrates the notions of quality of service management and mobility management and forms a base for overall session management. We compare SLM with the currently most widely adopted mobility management framework, Mobile IP, and show how some of Mobile IP's deficiencies are overcome

Structured time observation of human modelling tool users' activites

Most statements regarding human modeling tools efficiency are based on perceived time. No structured time observation of task activities performed by a simulation engineers working with the tools are previous performed. The aim of the study is to identify digital human modelling tool users’ activates and measure the time distribution of the activities. Furthermore, measured time distribution is co

Experimental and theoretical comparison of spatially resolved laser-induced incandescence signals in a sooting flame

A detailed experimental and theoretical investigation has been made on the use of Laser-Induced Incandescence (LII) in two configurations; right-angle LII and backward LII. Both right-angle and backward LII imaging measurements were conducted in simultaneous experiments at various pulse energies. The theoretically calculated LII signals were based on a heat transfer model for soot particles expose

Effects of European Law - on the Transformation of Politics in Legislation Processes

When discussing the transformation of politics into law in today’s society it is impractical to leave out the factual aspect of the immense interference of international law in the process. In this paper I will refer to European law that has a special position being not international law but supranational law. For both Poland and Sweden, EU-law has been a realistic fact in the legislation process