The performance process of face recognition involves the inspection study of facial features in an image, recognizing those features and comparing them to one of the many faces in the database. There are many algorithms capable of performing face recognition; such as: Principal Component Analysis, Discrete Cosine Transform, 3D recognition methods, Gabor Wavelets method etc. There were many issu...

OBJECTIVES This study was aimed to investigate the prevalence of active and passive tobacco smoking among Beijing residents in 2011. METHODS A cross-sectional survey was conducted, using a stratified multistage cluster random sampling method to select a representative sample of 20,242, among Beijing residents aged 18-79 years. Active and passive tobacco smoking information was collected by a ...

OBJECTIVES This study aims to establish a "Vertigo Council Diagnosis Questionnaire" for patients with chronic vestibular dysfunction and show the reliability of this questionnaire. MATERIALS AND METHODS A "Vertigo Council Diagnosis Questionnaire" consisting of 10 questions was prepared by 15 specialist physicians and analyzed for reliability using the "translation-back-translation" method. ...

OBJECTIVE The study aimed to design and evaluate the content and face validity, and reliability of knowledge, attitude, and behavior questionnaire on preventive behaviors among vulnerable women concerning sexually transmitted diseases (STDs). MATERIALS AND METHODS This cross-sectional study was carried out in two phases of an action research. In the first phase, to explain STDs preventive dom...

CONTEXT AND OBJECTIVE Many clinical investigations use generic and/or specific questionnaires to obtain information about participants and patients. There is disagreement about whether the administration method can affect the results. The aim here was to determine whether, among patients with intermittent claudication (IC), there are differences in the Walking Impairment Questionnaire (WIQ) and...

Learning activities are usually carried out face-to-face, but teachers also conduct online learning. Everyone is using technology, and it's easier for students to communicate. This study aims describe students' perceptions of classroom management during learning find the obstacles face. research uses a descriptive qualitative method. The data collection technique in this used questionnaire dist...

objective: this study aimed to examin the psychometric characteristics of the persian version of reproductive health assessment questionnaire for women of reproductive age (rhaqwra). materials and methods: this study was a cross sectional study. we selected 150 women aged 18- 45 years based on convenience sampling method who lived in the quake-hit areas  in eastern part of iran in 2013. some pr...