PURPOSE To examine the improvement in swimming (3.8 km), cycling (180 km), running (42.2 km), and overall performances at the Hawaii Ironman Triathlon of elite males and females between 1981 and 2007. METHODS Trends across years, gender differences in performance times in the three disciplines, and overall winning times of the top 10 males and females were analyzed. RESULTS Overall performa...

The paper presents the basics for implementation of devices using UWB (Ultra-Wideband) technology describing its performances and potential problems as these devices operate over large part of the frequency spectrum that is shared with many radio-communication services. Two elements are considered in particular; the regulatory framework and the question of compatibility or impact that UWB techn...

Recent studies reported different ages for peak freestyle swimming performances for 50 m and 1,500 m. The aims of the present study were (i) to determine the age of peak freestyle swimming speed for distances including 50 m, 100 m, 200 m, 400 m, 800 m, and 1,500 m and to (ii) analyze the sex difference in peak freestyle swimming speed for all distances between 50 m and 1,500 m for elite female ...

investigations are carried out to evaluate the performance of a low heat rejection (lhr) diesel engine consisting of air gap insulated piston with 3-mm air gap, with superni (an alloy of nickel) crown and air gap insulated liner with superni insert with different operating conditions of crude jatropha oil with varied injection timing and injection pressure.  performance parameters of brake ther...

investigations were carried out to evaluate the performance of direct injection diesel engine with medium grade low heat rejection (lhr) combustion chamber and 3 mm air gap insulated piston, 3 mm air gap insulated liner, and ceramic coated cylinder head [ceramic coating with the thickness of 500 µ was made on the inside portion of the cylinder head].the engine had different operating conditions...

this paper provides a critical perspective on entrepreneurial characteristics and gives an input to the discussion on the influence of entrepreneurial leadership, communication skills, determination and motivation on sales and customer satisfaction. it also presents the findings from an empirical study examining the structural effect of these four entrepreneurial characteristics on performance....

We used allometric models to identify the optimal body size/shape characteristics associated with physical and motor performance tests in Peruvian schoolchildren. The sample consisted of 3624 subjects (1669 boys and 1955 girls) aged 11-17 years from 31 public schools belonging to four cities located in the three natural regions in central Peru. Motor performance included 12-min run, standing lo...

Gaussian Minimum Shift Keying (GMSK) is a form of Continuous Phase Modulation (CPM) whose spectral occupancy can be easily tailored to the available channel bandwidth by a suitable choice of signal parameters. The constant envelope of the GMSK signal enables it to corporate with saturated power amplifier without the spectral re-growth problem. This paper provides a quantitative synopsis of bina...

Planning is a field of interest in many scientific disciplines. These scientific areas cover a multitude of planning approaches that at first sight do not have much in common: psychophysiological analyses, organizational science, linguistics, cognitive science, operations research, and spatial science, to name just a view. The differences in ontologies and methods used make it difficult to make...