Reduced rank regression (RRR) models with time varying heterogeneity are considered. Standard information criteria for selecting cointegrating rank are shown to beweakly consistent in semiparametric RRR models in which the errors have general nonparametric short memory components and shifting volatility provided the penalty coefficient Cn → ∞ and Cn/n → 0 as n → ∞. The AIC criterion is inconsis...

Abstract—Control of some mechanisms is hard because of their complex dynamic equations. If part of the complexity is resulting from uncertainties, an efficient way for solving that is robust control. By this way, the control procedure could be simple and fast and finally, a simple controller can be designed. One kind of these mechanisms is 3-RRR which is a parallel mechanism and has three revol...

We investigated the distribution and metabolism of SRR a -tocopherol ( SRR a -Toc), synthetic a -Toc compared with RRR a -Toc, in rats after a single oral administration of 2 mg (20 m Ci) SRR and RRR a -[5-methyl14 C]Toc. In the liver, there was no difference in the recovery of radioactivity until 12 h after administration, and it reached a maximum of 4.4% of the dose after 12 h, but in other t...

Scheduling has been an interesting problem since its inception. In the context of real-time networks, a scheduling algorithm is concerned with dispatching streams of packets sharing the same bandwidth such that certain guaranteed performance for each stream like rate and delay bound is provided. This function has a wide range of applications in network elements such as host adaptors, routers an...

Fairness is an inherent and fundamental factor of queue service disciplines in a large variety of queueing applications. Service time variability across jobs is an important factor affecting both system performance and scheduling rules (for example, computer systems that prioritize short jobs over long jobs). Service time variability and its effects on mean response times have been studied exte...

and commentary also appear in ACP Journal Club. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . For correspondence: Dr J Mant and Professor R Hobbs, University of Birmingham, Birmingham, UK; [email protected] Source of funding: Medical Research Council (MRC). Warfarin v aspirin for preventing stroke in patients >75 year...

This paper presents the effect of the accuracies of flexure hinge compliance equations (the accuracies vary with a geometrical ratio, t/R of a hinge) on the output compliances of RRR and 3-RRR micro-motion stages. Closed-form output compliance models of the stages are derived (with flexure hinge compliances as one of the variables) to investigate the aforementioned effect. The output compliance...

We discuss the fluid dynamical approach to nuclear giant resonances using imposed scahng type oscillations. We calculate the response of the intrinsic kinetic energy to the lsoscalar twist mode (a rrr = 2) quantum mechanically and show that for thxs mode as well as for the lowest normal parity modes (a rrr = 0 +, 1and 2+), the static single particle effects lead to the same restoring forces as ...

Waste segregation is an important component in the waste management chain as it makes possible to realize effective Reuse, Recycling and Recovery (RRR). Unfortunately, has received little attention normally informally practiced most developing countries (DC). It also affected by lack of awareness, weak regulatory frameworks enforcement, economic incentive a low priority planning. This study was...