This article investigates and evaluate a handover exchange scheme between two secondary users (SUs) moving in different directions across the handover region of neighbouring cell in a cognitive radio network. More specifically, this investigation compares the performance of SUs in a cellular cognitive radio network with and without channel exchange systems. The investigation shows reduced hando...

OBJECTIVE To evaluate cognitive functions in patients with different stages of chronic heart failure (CHF) and different degrees of stenosis of precerebral arteries. MATERIAL AND METHODS Authors examined 148 patients with CHF and 21 patients without CHF (controls). Neuropsychological assessment (NINDS-Canadian Stroke Standards - 30 minutes protocol), ultrasound scanning of the main cranial ar...

BACKGROUND Decisive information on the parameters involved in cognitive impairment in patients with chronic heart failure is as yet lacking. Our aim was to determine the functional and psychosocial variables related with cognitive impairment using the mini-mental-state examination (MMSE) with age-and education-corrected scores. METHODS A cohort study of chronic heart failure patients included...

The association between scores on MMPI-2 scales and cognitive symptom validity test (SVT) failure was investigated in 127 criminal defendants evaluated for competency to stand trial, criminal responsibility, and drug dependence, and 141 personal injury and disability claimants. Results indicated that SVT failure was associated with exaggerated symptom presentation involving somatic complaints i...

Introduction: Cognitive status of patients before Coronary Artery Bypass Grafting (CABG) affects their activities of daily living. Evaluation of cognition status and its related factors can help caregivers to plan suitable care programs. Objective: This study aimed to evaluate the patient’s cognition status and its related factors before CABG. Materials and Methods: This cross-sectional study...

Recent research has demonstrated that the cognitive processes associated with goal pursuit can continue to interfere with unrelated tasks when a goal is unfulfilled. Drawing from the self-regulation and goal-striving literatures, the present study explored the impact of goal failure on subsequent cognitive and physical task performance. Furthermore, we examined if the autonomous or controlled m...

The concept of software failure mode and effects analysis (FMEA) has grown in attractiveness over recent years as a way of assessing the reliability of software. Like its hardware counterpart, software FMEA is immensely tedious for an engineer to perform, as well as being error-prone. This paper presents the implementation of a novel method for automating code-level software FMEA based on treat...

The management of emergencies and abnormal situations in the Air Traffic Control (ATC) system entails substantial challenges for the air traffic controllers. The inherent complexity and dynamics of the ATC system can give rise to numerous cases of failure and controllers have to develop failure-sensitive strategies to counteract and forestall any paths to failure. Failure-sensitive strategies i...