background: energy expenditure is of paramount importance in the assessment of usefulness of wheelchair for paraplegics. despite widespread recognition of problems associated with currently available mobility systems for persons with spinal cord injuries, development of more efficient systems has been slow.  lack of a suitable and simple technique for the assessment of energy expenditure in par...

Mechatronic design efforts have been and continue to be heavily investigated in the development of robotic manipulator arms. However, little effort has been devoted to mechatronic redesign of traditional two-dimensional mechanisms which mechanical engineers get exposure to when they study subjects such as kinematics and mechanism design. In this paper a feasibility study for controlling the mot...

1. Abstract This paper describes the optimization of a bicycle crank mechanism equipped with springs. The purpose of the springs is to cause an even torque development over the crank cycle by elimination of the so-called dead centers of the cycle. The technology behind the optimization, musculoskeletal modeling, is described in some detail before the actual case is introduced and subjected to d...

We study two types of crank moments and two types of rank moments for overpartitions. We show that the crank moments and their derivatives, along with certain linear combinations of the rank moments and their derivatives, can be written in terms of quasimodular forms. We then use this fact to prove exact relations involving the moments as well as congruence properties modulo 3, 5, and 7 for som...

In this note, we formulate a theorem giving bounds on the powers of linear operators, in a general Banach space setting. The relevance of the theorem is illustrated by applying it to the Crank-Nicholson method for the numerical solution of the heat equation. This application yields a stability estimate in the maximum norm which amounts to an improvement over a well-known result of Serdjukova [l...

We define a vector crank to provide a combinatorial interpretation for a certain Ramanujan type congruence modulo 7.

New identities and congruences involving the ranks and cranks of partitions are proved. The proof depends on a new partial differential equation connecting their generating functions.

Objective: In this paper, a proposed technique of motion transmission is introduced, which based on the crank-rocker principle motion. The energy action performed through magnetic force, in no direct connection made between source input and load output. Also, to illustrate concept approve continuity using technique, simple model mechanism has been built run, showing basic sequence operation. Me...