theorization in sociological literature in general and in sociology of the family in particular suffers from conceptual confusion. the proposer of the concept: “iranian tripod system” tries to analyze the family situation and its changes in iran through modernity. the present paper studies the conceptual framework of iranian tripod system and its related quadrilateral concepts: “iranian society...

Insect locomotion requires the precise coordination of the movement of all six legs. Detailed investigations have revealed that the movement of the legs is controlled by local dedicated neuronal networks, which interact to produce walking of the animal. The stick insect is well suited to experimental investigations aimed at understanding the mechanisms of insect locomotion. Beside the experimen...

The approach was to obtain measurements that permitted comparisons of temporal evolution of bottom stress, suspended particle size, and optical and acoustical properties in the bottom boundary layer. The instrumentation was mounted on bottom tripods and an I-beam frame. The "OASIS" tripod included a 9-wavelength optical attenuation and absorption meter (WetLabs ac-9, with automated dissolved me...

The storage and analysis of large amounts of time-varying spatial and aspatial data is becoming an important feature of many application domains. This has fuelled the need for spatio-temporal extensions to data models and their associated querying facilities. To date, much of this work has focused on the relational data model, with object data models receiving far less consideration. Where desc...

This paper investigates the relationship between energetic efficiency and the dynamical structure of a legged robot’s gait. We present an experimental data set collected from an untethered dynamic hexapod, EduBot [1] (a RHex-class [2] machine), operating in four distinct manually selected gaits. We study the robot’s single tripod stance dynamics of the robot which are identified by a purely joi...