dynamically stable biped robots mimicking human locomotion have received significant attention over the last few decades. formerly, the existence of stable periodic gaits for straight walking of passive biped walkers was well known and investigated as the notion of passive dynamic walking. this study is aimed to elaborate this notion in the case of three dimensional (3d) walking and extend it f...

background: radon and its daughters are amongst the most important sources of natural exposure in the world. soil is one of the significant sources of radon/thoron due to both radium and thorium so that the emanated thoron from it may cause increased uncertainties in radon measurements. recently, a diffusion chamber has been designed and optimized for passive discriminative measurements of rado...

background: separate radon and thoron measurements in soil are very important in assessment of internal exposure due to inhalation of such radioactive gases. materials and methods: in this study, a low cost, small size, passive diffusion chamber has been developed for simple measurement of radon-222 and radon-220(thoron) gases separately in soil. the diffusion chamber consists of two films and ...

various and complex human activities in geographical contexts need proper ground if at most efficiency is to be achieved. land preparation regulates the relationship between human, space, and human activities. land preparation has various dimensions related to value system, political, scientific, artistic, and defense-security aspects. one of the most important dimensions of land preparation is...

in this project have been done in descriptive-analyze method, mid utilize from mythology-psychology by studying women characters in five plays. we are searching traits of “wild woman archetype” in secret defense drama. this archetype has been formed from theories of carel gustave yung, unregarded in literary and artistically studying in my country. important asking in this article is introducin...

Abstract As Internet-connected application devices become more and popular, services need to be done through the network, which also leads users paying attention network security performance. Due continuous iterative development of cyber attack means scale, it is difficult conduct passive detection systems such as traditional intrusion mechanisms endless attacks. Later, was studied an active de...

english passive has always been regarded as a challenge by farsi-speaking efl learners. despite the presence of many linguistic and pedagogical approaches in studying and teaching english passive, there still appears to be a pedagogical gap facing farsi-speaking efl learners dealing with this construction. taking up the cognitive-construction grammar perspective, the present article aims to inv...