In this paper, the problem of two-machine flow shop scheduling to minimize total energy costs under time-of-use tariffs is investigated. As the objective function of this study is not a regular measure, allowing intentional idle-time can be advantageous. So this study considers two approaches, one for non-delay version of the problem and the other one for a situation when inserting intentional ...

The emissions of selected hydrocarbons from in-use commercial aircraft at a major airport in the United States were characterized using proton-transfer reaction mass spectrometry (PTR-MS) and tunable infrared differential absorption spectroscopy (TILDAS) to probe the composition of diluted exhaust plumes downwind. The emission indices for formaldehyde, acetaldehyde, benzene, and toluene, as wel...

We consider a queueing loss system with heterogeneous skill based servers with arbitrary service distributions. We assume Poisson arrivals, with each arrival having a vector indicating which of the servers are eligible to serve it. An arrival can only be assigned to a server that is both idle and eligible. Assuming exchangeable eligibility vectors and an idle time ordering assignment policy, th...

In this paper we present a brokerage system for using idle computing resources as a micro-currency for Web services hardly quantifyable with real currencies as downloading stock charts or accessing a search engine. The Locust (LOw cost Computing Utilizing Skimmed idle Time) system acts as a Broker for micro-payable services by demanding a part of the user’s idle computing resources in exchange ...

This paper addresses an important question of how to achieve an appropriate and nearly uniform work-load for an under-utilized staff in a waiting line situation by scheduling an appropriate amount of supplementary work during the idle time. We present an M/G/1 queue with a special server’s vacation policy to model this situation. In this system, after serving all arriving customers, the server...

Networked video sensors need to execute two dependent periodic tasks: video encoding and transmission. The dependency and periodicity often result in small idle intervals of CPU and wireless network interface card (WNIC). In this paper, we present a sender-buffering approach to exploit such idle intervals for energy saving. Specifically, a video sensor encodes frames in a timely fashion, but bu...

Idle speed control remains one of the most challenging problems in the automotive control eld owing to its multiple-input, multiple-output structure and the step nature of the disturbances applied. In this paper a simulation model is described for a 4.0 l production engine at idle which includes the standard bypass air valve and spark advance dynamics, as well as the e ects of operating point o...

NOx pollution is one of the greatest air quality issues that urban areas face today, particularly within European Union (EU), yet currently this pollutant only controlled through homologation process. There no periodic technical inspection (PTI) process for emissions EU, leaving a weakness in legislation allowing high polluters to negatively impact quality. Work needs be performed incorporate s...