Eighty-four children suffering from Perthes' disease are reviewed. The policy of management for these patients was one by which 55 per cent of the cases had no active treatment and the remainder were treated by operation. Results of the series show an improvement over a previously reported series of untreated controls, particularly where clinical management had been possible throughout the dise...

In this paper, the power allocation strategy in the downlink of a WCDMA system is investigated, with the aim of assessing the network capacity. It is known that the downlink capacity for a base is limited by the maximum transmit power, which is a common resource to be shared by all users; if one user requires a large fraction of the allowed transmit power, the overall capacity could be decrease...

OBJECTIVE Anxiety sensitivity (AS) is a well-established, malleable risk factor for anxiety and other forms of psychopathology. Structural evaluation models of AS suggest it can be decomposed into physical, social, and cognitive concerns, and emerging work indicates that these components may be differentially related to various adverse outcomes. In particular, AS cognitive concerns have been co...

We consider joint Tikhonovand Lavrentiev-regularization of control problems with pointwise controland state-constraints. We derive error estimates for the error which is introduced by the Tikhonov regularization. With the help of this results we show, that if the solution of the unconstrained problem has no active constraints, the same holds for the Tikhonov-regularized solution if the regulari...

Internet services experience frequent changes in demand, resource characteristics and service requirements. A service can meet its requirements with minimal cost only if the allocation of its distributed resources can be adaptively controlled. The design of adaptive control schemes requires a solid understanding of the dynamic characteristics of the distributed service, demand and resources. Th...

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Background and purpose: Surveillance is a system of continuing health checks, is considered as a critical part of public health practice for planning and implantation of effective prevention and control interventions for communicable diseases in the region. The aim of this study was to determine the effects of an active method of data collection on the improvement of these d...

background and purpose: surveillance is a system of continuing health checks, is considered as a critical part of public health practice for planning and implantation of effective prevention and control interventions for communicable diseases in the region. the aim of this study was to determine the effects of an active method of data collection on the improvement of these diseases surveillance...

calculation of lateral earth pressure on retaining walls is one of the main issues in geotechnics. the upper and lower bound theorems of plasticity are used to analyze the stability of geotechnical structures include bearing capacity of foundations, lateral earth pressure on retaining walls and factor of safety of slopes. in this paper formulation of finite element limit analysis is introduced ...

In this review, we intend to clarify the underlying ideas and the relations between various multigrid methods ranging from subset decomposition, to projected subspace decomposition and truncated multigrid. In addition, we present a novel globally convergent inexact active set method which is closely related to truncated multigrid. The numerical properties of algorithms are carefully assessed by...