The matrix exponential is a much-studied matrix function having many applications. The Fréchet derivative of the matrix exponential describes the first-order sensitivity of eA to perturbations in A and its norm determines a condition number for eA. Among the numerous methods for computing eA the scaling and squaring method is the most widely used. We show that the implementation of the method i...

Current mainstream Evolutionary Algorithms (EA) are based on the concept of selection, encapsulated in the definition of a fitness function. Besides selection, however, the natural evolutionary process includes a phenomenon of elimination, which is linked to the ideas of viability and contingency. In this paper, we show how elimination can be modeled and integrated with selection to give rise t...

BACKGROUND Neurorehabilitation studies suggest that manipulation of error signals during practice can stimulate improvement in coordination after stroke. OBJECTIVE To test visual display and robotic technology that delivers augmented error signals during training, in participants with stroke. METHODS A total of 26 participants with chronic hemiparesis were trained with haptic (via robot-ren...

Error is an inevitable part of life and cannot be completely eliminated, but it can be minimized. A root cause analysis is a technique for understanding the systematic error causes that is involved beyond a person or people to implement an errors and including field and environmental causes of errors when occur in this situation too. An important factor of an error occurrence is a root cause (c...

enterprise architecture (ea) is a discipline for understanding, engineering, and managing different components of an enterprise and their interrelationships. moreover, because the risk and impact of ea are pervasive across the enterprise, it is critical to perform an architecture assessment before making any decision about choosing a scenario. this paper provides an approach based on fuzzy anal...

Enhancement of sensory motor performance is vital in rehabilitation after brain injury. This short communication discusses a new approach in motor learning and rehabilitation: The error augmentation (EA) which utilizes incorrect visual and proprioceptive feedback to improve motor adaptation. In EA technology, the computer distinguishes and amplifies errors in a patient's movement from a preferr...

conclusions acute and chronic administration of ellagic acid had anxiolytic property. also, the most effective dose of ellagic acid was 30 mg/kg. pretreatment with flumazenil reversed the beneficial effect of ellagic acid and diazepam on anxiety. it is likely that the anxiolytic effect of ellagic acid is largely mediated by activation of gabaa receptor. results acute and chronic application of ...

OBJECTIVE To observe the effects of electro-acupuncture (EA) at related Jing-well Points (HT 9, PC 9, KI 1 and LU 11) in rats with vascular dementia (VD) and discuss the relative mechanism. METHODS A randomized controlled animal experiment was designed. A total of 104 rats were involved in the present study and divided randomly into 4 groups: sham-operation group, model group, Jing-well Point...