We study a dynamic service mechanic problem in which large maintenance activities, known already before the start of the planning period, and emergency incidents, arriving during the planning period, need to be served by the same pool of mechanics. Since not enough own mechanics are available to serve all jobs, the goal is to minimize total expected costs by timely assigning some of the activit...

Li S, Jiao X, Tao L, Liu H, Cao Y, Lopez BL, Christopher TA, Ma XL. Tumor necrosis factorin mechanic trauma plasma mediates cardiomyocyte apoptosis. Am J Physiol Heart Circ Physiol 293: H1847–H1852, 2007. First published July 6, 2007; doi:10.1152/ajpheart.00578.2007.—Mechanical traumatic injury causes cardiomyocyte apoptosis and cardiac dysfunction. However, the signaling mechanisms leading to ...

The aim of this paper is to show the significance of the function of Mechanic of Surgical Instruments in raising up a modern, in 19th century terms, surgical clinic by prof. Ludwik Bierkowski. Exploiting mainly source materials, this article discusses the character of mechanical occupations and his duties. The personality of Gotlob Jentsch, first to take this position, and his immediate success...

Absract Magnetic actuation utilizes the mechanic torque that is the result of interaction of the current in a coil with an external magnetic field. A main obstacle is, however, that torques can only be produced perpendicular to the magnetic field. This actuation principle has been a topic of research since earliest satellites were launched. Magnetic control has been applied for nutation damping...

If you were to go into a motorcycle-parts department and ask them for a feedback assembly they wouldn’t know what the hell you were talking about. They don’t split it up that way. No two manufacturers ever split it up quite the same way and every mechanic is familiar with the problem of the part you can’t buy because you can’t find it because the manufacturer considers it part of something else...

Cardiovascular disease is the leading cause of death in America. Computer simulation of complicated dynamics of the heart could provide valuable quantitative guidance for diagnosis and treatment of heart problems. In this paper, we present an integrated numerical model which encompasses the interaction of cardiac electrophysiology, electromechanics, and mechanoelectrical feedback. The model is ...

Polarisation measurements on the Cosmological Microwave Background (CMB) will be very difficult as the expected polarisation is not expected to exceed 10% of the signal. Therefore, noises of all origins must be searched for and carefully extracted. Low frequency drifts are expected to arise from mechanic, thermal and electronic origin. If not suitably treated they induce stripes on sky maps suc...

The process of equilibration of a colliding hard-disks system is studied in the framework of classical mechanic. The method consists of dividing the nonequi-librium system into the interacting subsystems; the evolution one of these subsystems is analyzed employing generalized Lagrange and Liouville equations. The subsystem-subsystem interaction force is considered as an evolution parameter. The...

We consider a nonstatistical, computationally fast experiment to identify important topological constraints in folding small globular proteins of about 100-200 amino acids. In this experiment, proteins are expanded mechanically along a path of steepest increase in the free space around residues. The pathways are often consistent with folding scenarios reported in kinetics experiments and most a...

Integrated design processes based on complete product models have turned out to be a key strategy to solve complex engineering problems. The vision behind these processes and models is a clear and straight-forward path from the first idea to the product ready for manufacturing. In this context mechatronic systems offer a specific challenge. They represent multidomain products by integrating mec...