Variations in Tracking in Relation to Geographic Location

Aclinicopathological survey of esophageal cancer in patients referred to a gastroenterology clinic in Tehran, 1991-2005

 Abstract Background: Esophageal cancer is one of the major malignancies, with various epidemiological aspects in recent years in developing countries, including increased prevalence and variations of pathologic patterns. This may be due to increasing rates of Barrett’s esophagus, gastroesophageal reflux, smoking and obesity. This study was performed from 1991 to 2005 in order to evaluate vario...

Multiple Target Tracking in Wireless Sensor Networks Based on Sensor Grouping and Hybrid Iterative-Heuristic Optimization

A novel hybrid method for tracking multiple indistinguishable maneuvering targets using a wireless sensor network is introduced in this paper. The problem of tracking the location of targets is formulated as a Maximum Likelihood Estimation. We propose a hybrid optimization method, which consists of an iterative and a heuristic search method, for finding the location of targets simultaneously. T...

Maximum Power Point Tracking Using Sliding Mode Control for Photovoltaic Array

In this paper, a robust Maximum Power Point Tracking (MPPT) for PV array has been proposed using sliding mode control by defining a new formulation for sliding surface which is based on increment conductance (INC) method. The stability and robustness of the proposed controller are investigated to load variations and environment changes. Three different types of DC-DC converter are used in Maxim...

Short communication:Ecological larval fish groups in Chabahar Bay in relation to day/night and monsoon variations

Prevalence of Geographic Tongue and Its Relation with Food Allergy and Familial History in Patients Referred to Semnan Dental Faculty (2018–2019)

Background and Objectives: The cause of geographic tongue is unknown and a few studies have been carried out on the associations of this lesion with food allergy. The aim of this study was to assess the prevalence of geographic tongue and its associations with food allergy and familial history in the patients referred to the Oral and Maxillofacial Medicine Department of Semnan Dental School, Se...