Purpose – This study seeks to develop a novel eight-legged robot. Additionally, this study defines design and control of an eight-legged single actuator walking ROBOTURK SA-2 spider robot based on the features of a creatural spider. Design/methodology/approach – First, the single actuator eight-legged tetrapod walking spider robot was modeled on solid works and then the animation of the model w...

Legged robots display a characteristically periodic motion. Measuring and tracking this motion has traditionally been performed using general inertial measurement techniques. While widely applied in robotics, this approach is limited in dynamic legged locomotion due to the excessive accumulation of drift from severe impact shocks (nearly 9g in single leg experiments). This paper introduces the ...

Purpose: The present study aimed to compare Musculoskeletal Discomforts (MSDs) among six different common postures while working with laptop in female students of University of Tehran, Tehran City, Iran. Methods: This was a crossover trial study. Eighteen female students voluntarily and purposefully participated in all stages of the study. The study participants were randomly assigned into gro...

In this paper we construct Galois towers with good asymptotic properties over any nonprime finite field F`; i.e., we construct sequences of function fields N = (N1 ⊂ N2 ⊂ · · · ) over F` of increasing genus, such that all the extensions Ni/N1 are Galois extensions and the number of rational places of these function fields grows linearly with the genus. The limits of the towers satisfy the same ...

Executive dysfunction is a deficiency in skills of planning and problem solving that characterizes many neuropsychiatric disorders. The Towers Task is a commonly used measure of planning and problem solving for assessing executive function. Towers Task data are usually zero-inflated and right-censored, and ignoring these features can result in biased inference for the disease characterization o...

the nondestructive techniques are applied to identify important data from the internal process of distillation towers, process towers, pressure vessels and etc. in recent, the gamma-ray scanning techniques as diagnostic tools for scanning of tray columns, packed columns, storage tanks, level measurement and density measurement of containing materials has been used widely. this paper has tried t...

this paper is an attempt to numerical modeling and experimental study of air flow in the yazdi wind-towers. wind towers has been known as one of the most effective climatic elements in iranian traditional architecture. this paper is an attempt to evaluating yazdi wind-tower to discussion the two main questions: 1. what is the role of orientation of wind-towers span, regarding to climate and hei...

Legged off-road vehicles exhibit better mobility while moving on rough terrain. Development of legged mechanisms represents a challenging problem and has attracted significant attention from both artists and engineers.The Theo Jansen mechanism is gaining widespread popularity among the legged robotics community due to its scalable design, energy, efficiency, low payload-to-machine-load ratio, b...

Exergy analysis and response surface methodology (RSM) is applied to reduce the exergy loss and improve energy and exergy efficiency of acetic acid production plant. Exergy analysis is run as a thermodynamic tool to assess exergy loss in reactor and towers of acetic acid production process. The process is simulated in Aspen Plus(v.8.4) simulator and the necessary thermodynamics data for calcula...