Designing a building with maximum utilization of daylight and use of energy efficient luminaires will reduce the cost of energy use. In the present study, by means of computer simulations using RELUX software, the interaction between natural and artificial light and the related illumination conditions expected in a commercial office building in Mumbai, India have been simulated and analysed. In...

Declustered data organizations have been proposed to achieve less-intrusive reconstruction of a failed disk’s contents. In previous work, Holland and Gibson identified six desirable properties for ideal layouts. Ideal layouts exist for a very limited family of configurations. The PRIME data layout deviates from the stated ideal only slightly and its run-time performance is very good for light w...

We consider the problem of scheduling communication on optical WDM (wavelength division multiplexing) networks using the light-trails technology. We give two online algorithms which we prove to have competitive ratios O(log n) and O(log n) respectively. We also consider a simplification of the problem in which the communication pattern is fixed and known before hand, for which we give a solutio...

Computer Architecture) CRITICAL LOADS CLASSIFICATION, CHARACTERIZATION, AND EXPLOITATION

Reduced switching loss favours Pulse Skipping Modulation mode of switching dc-to-dc converters at light loads. Under certain conditions the converter operates in discontinuous conduction mode (DCM). Inductor current starts from zero in each switching cycle as the switching frequency is constant and not adequately high. A DC-to-DC buck converter is modelled and simulated in this paper under DCM....

Modern mega watt class wind turbines are exposed to high and complex loads. At the same time the aim is to realize light weight and optimized structures. Compared to other industries the design lifetime of a wind turbine is very long. Applying simulation tools for the predictions of fatigue life is therefore essential. This paper presents the approaches for fatigue anaylses used in the wind ind...

This paper gives the description of an automatic and programmable device especially designed for the analysis of the ~echanical properties (dynamic modulus of elasticity, creep and stress relaxation) of samples under light loads. This microprocessor controlled device is a torsion pendulum o e rating in forced oscillations in the very low frequency domain (V.L..F'.:lO-LL@ Its characteristics are...

Microscopic roughness is inevitable on the gear meshing surface, which also a key parameter affecting dynamic response. The surface exhibits self-affine characteristics across multiscales. To explore influence of fractal topography vibration amplitude system under different rotational speeds and loads, an experimental setup spur transmission devised. dimension are calculated by power spectral d...

Abstract Due to an increase in axle loads, the development of excess pore water pressure and settlement a railway track foundation fine-grained subgrade soil can be observed. A thorough understanding mechanism is essential for settlements design potential ground improvement. In this paper, three dimensional numerical study presented, which investigates effects loads trains on both settlement. S...