This paper focuses on single machine scheduling subject to machine deterioration. The current maintenance state of the machine is determined by a maintenance level. While jobs are processed this maintenance level drops by a certain, possibly job-dependent, amount. A maintenance level of less than zero is associated with the machine’s breakdown and is therefore forbidden. Consequently, schedule ...

Maintenance of production machines is a control to maintain the productivity process. PT. Symgreen company that produces ice cream sticks. To achieve optimal results, regular machine maintenance required. The occurrence damage experienced during process, in some components, so results were reduced. Failure Mode and Effect Analysis method used identify failure mode overcome every breakdown. dete...

Electro Discharge Machining (EDM) is a noticeable machining practice among created unconventional machining procedures for intricate, complex profiles in "hard to machine" materials, similar to heat-treated steels, composites, superalloys, ceramics, composites, carbides, and so on. In EDM, the material expulsion of the cathode is accomplished through precise controlled electric discharge (the s...

It is a widely-supported tenet in human-computer interaction that the meaningful unit of analysis is not the technical device alone, but the technical device together with the person interacting with it; the reason is that what is a relevant property of a technology is only understandable with respect to the specific goals and resources activated during its usage. This basic reflection should a...

L ike the waistband of your pants after Thanksgiving dinner, neurons have to be able to stretch and then return to shape. On page 269 Hammarlund et al. pinpoint the protein that confers this springiness, showing that neurons lacking the molecule fracture. Movements such as bending your elbow put strain on neurons, but the source of the cells' elasticity has been a mystery. Hammar-lund et al. su...

A recent theory of the nearly axisymmetric vortex breakdown in a pipe is presented. We study the motion of an axisymmetric and inviscid swirling ow in a pipe with certain boundary conditions that may reeect the physical situation. The theory is built of global analysis of solutions of the Squire-Long equation and linear stability analysis of these solutions. The theory uniies the major previous...

Executive summary This deliverable documents the work performed by the authors in the context of work package WP7 of the EU project BRICS. The authors of this report all work at the University of Bergamo, which is the partner in BRICS responsible for promoting and supporting the development of Open and Flexible Robotic Systems. WP7 is a cross-sectional work package as Openness and Flexibility a...

Within the EU FP6 Integrated Project WINNER, adaptive transmission is investigated as a key technology for boosting the spectral efficiency of a new radio interface for 4G systems. Adaptive allocation of time-frequency chunks in an OFDM-based system offers a significant potential, but also poses challenges. Within work package two of WINNER, we study critical issues such as the feasibility of a...

This document describes given an analysis of the computer security aspects of the demonstrator developed in work package 12 of the Wireless Health and Care (WsHC) project. A risk analysis is performed and requirements for the system are established. The implementation of security measurements implemented in the demonstrator is discussed. Finally the risk analysis is revised according to the pro...