Nowadays, shovels play an important role in production of open pit mines and their failures result in significant production loss and considerable increase in maintenance costs. Therefore, reliability and risk analysis can help to improve production, productivity and reduce production costs. In this study, reliability of electric cable shovel of Chadormalu iron ore mine in Iran was investigated...

introduction: parkinson s disease (pd) is a common progressive neurodegenerative disorder, which its onset is later in adults and it s incidence increases in people aged between 55 and 60 years. dexterity, because of it s role at upper extremity function and person independency in function, is assessed in rehabilitation. purdue- pegboard test often is used in rehabilitation clinical settings...

[Purpose] The purpose of this study was to compare the reliability of the measurement of the passive range of motion (PROM) of shoulder horizontal adduction (SHA) measurements using a smartphone for the assessment posterior shoulder tightness (PST) between the side-lying and supine test positions. [Subjects and Methods] Forty-seven subjects (mean ± age, 24.9 ± 3.5 years) without shoulder pathol...

background: questionnaire is a suitable tool for evaluating the subjective masticatory function in edentulous patients. however, there is no validated persian version of masticatory function questionnaire. the aim of this study was to evaluate the psychometric properties of the translated persian version of the quality of masticatory function (qmf) questionnaire in terms of validity and reliabi...

The aim of this study is to get the reliability of series system and analyze the reliability of machining center. So a modified method of reliability modelling based on Monte Carlo simulation for series system is proposed. The reliability function, which is built by the classical statistics method based on the assumption that machine tools were repaired as good as new, may be biased in the real...

Let H be a Hilbert space. We consider quantum channel [4] with a finite input alphabet {1, ..., a} and with pure signal states Si = |ψi >< ψi|; i = 1, ..., a. Compound channel of length n is in the n–tensor product of the space H , i.e. Hn = H ⊗ . . . ⊗ H . An input block (codeword) u = (i1, . . . , in) , ik ∈ {1, . . . a}, for it means using the compound state ψu = ψi1 ⊗ . . . ⊗ ψin ∈ Hn and t...

We describe certain extremalities for Gallager’s E0 function evaluated under the uniform input distribution for binary input discrete memoryless channels. The results characterize the extremality of the E0(ρ) curves of the binary erasure channel and the binary symmetric channel among all the E0(ρ) curves that can be generated by the class of binary discrete memoryless channels whose E0(ρ) curve...

A new approach for upper bounding the channel reliability function using the code spectrum is described. It allows to treat both low and high rate cases in a unified way. In particular, the earlier known upper bounds are improved, and a new derivation of the sphere-packing bound is presented.