In this paper we present the study of the mathematical model of a real life joint used in an underwater robotic fish. Fluid-structure interaction is utterly simplified and the motion of the joint is approximated by Düffing’s equation. We compare the quality of analytical harmonic solutions previously reported, with the input-output relation obtained via truncated Volterra series expansion. Comp...

This paper addresses validation of a curvature-theory-based time-invariant inverse kinematic model and a related tracking algorithm for human motor control of reaching motions. Human subjects made unconstrained reaching motions in the horizontal plane to fixed targets at three self-selected speeds. Consistent shoulder/elbow joint speed ratios for motions to the same target across speeds were ob...

Clonal expansion of CD4+CD28- T cells is a characteristic finding in patients with rheumatoid arthritis (RA). Expanded CD4+ clonotypes are present in the peripheral blood, infiltrate into the joints, and persist for years. CD4+CD28- T cells are oligoclonal lymphocytes that are rare in healthy individuals but are found in high percentages in patients with chronic inflammatory diseases. The size ...

This article presents methods for robust and efficient communication over wireless channels. Both benefits and limitations of the classical approach of separate source and channel coding are discussed. Joint source-channel coding (JSCC) is presented as the most promising scheme for communication of analogue sources over wireless channels, due to its ability to cope with varying channel qualitie...

aim: abnormal joint mobility is an important factor in movement dysfunction and physical disability. a general lack of descriptive details exists for measurements of hip rotation range of motion (rom). this study was designed to establish the influence of hip position on active and passive range of motion of the hip in external and internal rotation(ext & int rot). material & methods: ...

in this research, the influence of bolt preload on the fatigue strength of 2024-t3 aluminium alloy double lap bolted joints has been studied experimentally and numerically. to do so, three sets of the specimens were prepared and each of them subjected to tightening torque of 1,2.5 and 5 n-m and then fatigue tests were conducted under various cyclic axial load levels. in the numerical method, th...

abstract   background: sacroiliac joint (sij) dysfunction is a widely known but poorly defined   cause of low back pain. to our knowledge, few published studies have been   conducted to evaluate systematically the prevalence and significance of concomitant   sacroiliac joint dysfunction in patients with herniated lumbar discs. as concomitant   sij dysfunction in low back pain patients is likely...

abstract   background: sacroiliac joint (sij) dysfunction is a widely known but poorly defined cause of low back pain. to our knowledge, few published studies have been conducted to evaluate systematically the prevalence and significance of concomitant sacroiliac joint dysfunction in patients with herniated lumbar discs. as concomitant sij dysfunction in low back pain patients is likely to resp...

In this paper, the study on multi-storied building with and without expansion joint when it is subjected to seismic forces in both x y direction are taken into consideration. By maintain same floor area of different plans provided along weaker column stretch stiffed order make more resistant compared joints. The analysis done using ETABS 2016. parameters such as shear force bending moment at cr...