In this paper we present a new approach for cognitive radio. In the usual approach the secondary network is in charge of monitoring the channel to determine whether or not the primary network is active in the area. If not, the secondary network is allowed to use the spectrum. In the new scheme we propose, the primary network encompasses the techniques which allow it to capture the bandwidth eve...

Cognitive effort has been implicated in numerous theories regarding normal and aberrant behavior and the physiological response to engagement with demanding tasks. Yet, despite broad interest, no unifying, operational definition of cognitive effort itself has been proposed. Here, we argue that the most intuitive and epistemologically valuable treatment is in terms of effort-based decision-makin...

aim and background: tobacco dependency is recognized as the first factor for the prevention of mortality worldwide. despite the negative impact of smoking on hypertension, therapists have been paid less attention to the effectiveness of psychological treatment of nicotine dependence of these patients. methods and materials: in this case- control pre-post test research with a quasi-experimental ...

AbstractDeveloping self-regulated learners has been the life-long ambition of different stakeholders in education. This study was set out to find the relationships between self-regulated strategies as defined by time and resource management, cognitive and metacognitive strategies, achievement goals classified as mastery, performance-approach and performance-avoidance, and the listening ac...

objectives: the present research has been carried out to investigate the effectiveness of group mindfulness-based cognitive therapy on modification of body image and quality of life in women with breast cancer undergoing mastectomy.  materials: this research is a quasi-experimental study (pretest-posttest with control). in this clinical trial, 50 voluntary patients who had undergone mastectomy ...

background: laps is one of the challenges in the treatment of opioid dependency that cause relapse. the purpose of this study was to determine the effectiveness of behavioral group therapy and cognitive-behavioral group therapy on the laps rate and persistence in the treatment of patients with opioid dependency under the treatment of mmt. methods: in a quasi-experimental study, 66 patients were...

AbstractDeveloping self-regulated learners has been the life-long ambition of different stakeholders in education. This study was set out to find the relationships between self-regulated strategies as defined by time and resource management, cognitive and metacognitive strategies, achievement goals classified as mastery, performance-approach and performance-avoidance, and the listening ac...

Background: Women with unplanned pregnancy experienced a number of psychological problems. Thus, the present study aimed to examine the effectiveness of midwifery counseling based on cognitive approach in improvement of adaptation to pregnancy, mother-fetal attachment and quality of life among unplanned pregnant women. <span...

objectives: multiple sclerosis is the most prevalent central nervous system diseases thatdue to being chronic, frequent recurrence, uncertainty about its progress, and disability, can lead to various distresses as well as demoralization . rehabilitation method based on cognitive-existential therapy is an integratedapproach which can help to decrease demoralization syndrome in these patients. th...