Wayfinding signs play an important role in guiding users to navigate in a virtual environment and in helping pedestrians to find their ways in a real-world architectural site. Conventionally, the wayfinding design of a virtual environment is created manually, so as the wayfinding design of a real-world architectural site. The many possible navigation scenarios, and the interplay between signs a...

Cognitive Architectures (CAs) are the core of artificial cognitive systems. A CA is supposed to specify the human brain at a level of abstraction suitable for explaining how it achieves the functions of the mind. Over the years a number of distinct CAs have been proposed by different authors and their limitations and potentials were investigated. These CAs are usually classified as symbolic and...

Previous studies have shown that iconic graphical signs can evolve into symbols through repeated usage within dyads and interacting communities. Here we investigate the evolution of graphical signs over chains of participants. In these chains (or "replacement microsocieties"), membership of an interacting group changed repeatedly such that the most experienced members were continually replaced ...

introduction: menopause is the most important event in middle-age. women, in this period, face several changes. vasomotor symptoms and skin changes are prevalent in the middle-age. this study, mainly, was performed identifying the vasomotor symptoms and skin changes in menopausal women. materials and methods: study sample was consisted of 150 women who have visited the healthcare centers, exper...

leukocyte adhesion deficiency type 1 (lad 1) is an autosomal recessive hereditary disorder resulting from deficiency of cd18, characterized by recurrent bacterial infections. we report two consanguineous patients with leukocyte adhesion deficiency type 1( lad1). these two infant boy patients were referred to us, within a short period of time, with the complaints of recurrent infections at the a...

background the exposure to noxious agwents such as lead my cause lung disorders. objectives in the present study, pulmonary function tests and self-reported respiratory symptoms in lead exposure workers were compared with matched control subjects. materials and methods the frequency of respiratory symptoms were evaluated in a sample of 108 lead exposure workers and 100 control subjects with sim...

the aim of the present study is to investigate the relationship between obsessive-compulsive symptoms (ocss) and negative and positive symptoms in schizophrenia.subjects of the study comprised of 31 schizophrenia with obsessive-compulsive symptoms (19 men and 12 women) selected by convenience sampling method from iran psychiatric hospital. the diagnoses were established on the basis of dsm-iv-t...

aim : to evaluate the association between body mass index (bmi) and certain digestive symptoms and signs. background : obesity is of substantial health significance all over the world, and it is categorized by the world health organization among top ten global health problems. there is much evidence that indicates a higher prevalence of digestive symptoms in obese people. patients and methods :...

background: respiratory problem is one of the major health hazards in dust-exposed workers; it is a major cause of morbidity and mortality all over the world. objective: to determine the prevalence of respiratory problems and lung function impairment among quarry workers in ebonyi state, nigeria. methods: respiratory problems and lung function were studied in 403 quarry workers aged 10–60 years...