Chronic bronchitis can be recognized, in its early stages, only from the patient's account of his symptoms. During the last few years the prevalence of respiratory symptoms has been surveyed in many popurations in the United Kingdom. A more or less uniform questionnaire has been developed by certain workers in consultation; but until recently there has been no general agreement on its content o...

OBJECTIVES The primary objective was to develop a repeatable radiographic technique for assessment of cranial tibial subluxation (CTS) and test the intra-observer and inter-observer repeatability of the chosen landmarks. A secondary objective was to determine the effects of digital radiographic magnification on CTS measurement repeatability. METHODS Twenty-three normal canine pelvic limbs wer...

This paper proposes a new approach to design an observer for the Photovoltaic conversion system. Originally, PV system is modeled under nonlinear framework that difficult designing observer. Thus, in this work, original form of will be transformed T-S fuzzy model with existence disturbance. Unlike previous articles, work affected by faults, and fault impacts not only but also output. The design...

this paper presents a new observer-based control scheme for a class of nonlinear systems. in the proposed method, nonlinear observer and twisting algorithm controller are employed to realize a sensor-less control strategy for complex systems which makes use of non measurable process information instead of installing as many sensors as possible. due to lack of availability of the complex system ...

in this work, we investigate the transfer of some homological properties from a ring $r$ to its amalgamated duplication along some ideal $i$ of $r$ $rbowtie i$, and then generate new and original families of rings with these properties.

for a ring endomorphism $alpha$ and an $alpha$-derivation $delta$, we introduce a concept, so called skew $pi$-armendariz ring, that is a generalization of both $pi$-armendariz rings, and $(alpha,delta)$-compatible skew armendariz rings. we first observe the basic properties of skew $pi$-armendariz rings, and extend the class of skew $pi$-armendariz rings through various ring extensions. we nex...