Abstract Noise and greenhouse gas emission targets set by e.g., the EU commission, NASA, ICAO oblige aviation industry to reduce its environmental footprint. Battery-powered hybrid-electric aircraft are currently being investigated in this regard as they can potentially in-flight emissions noise. However, most studies date have focused on CO 2 reduction potential instead of considering total li...

From general considerations of the basic physiological properties of the cell division cycle, we deduce what the dynamical properties of the underlying molecular control system must be. Then, taking a few hints from the biochemistry of cyclin-dependent kinases (the master regulators of the eukaryotic cell cycle), we guess what molecular mechanisms must be operating to produce the desired dynami...

results higher levels of stress were due to the fear of being infected by hiv and hepatitis patients with mean of 3.2 and 58%; and lack of weekends with mean of 3 and 44%. the lowest levels of stress were related to inadequate skills with mean of 2.18 and 32%, and environment light with mean of 2.14 and 34.7%. stress was significantly related to job status, conflict of doctors and nurses as wel...

Vehicle coating is an important component of automotive manufacturing. The paint shop constitutes the plurality of initial investment in an automotive assembly plant, consumes the majority of energy used in the plant's operation, and generates significant waste from paint overspray. The coating process also results in the emission of polluting volatile organic compounds (VOCs). New paint techno...

Military assets are generally appraised at the acquisition stage on the basis of their total life cycle costs. This study provides a theoretical foundation and a parametric cost model for forecasting the life cycle cost for any kind of heavy military equipment. In the model, the asset operating and maintenance (O&M) costs are estimated as a function of its age over its optimal operational life....

Tritium is the main fuel ingredient in the plasma of MFE and IFE systems based on the D-T fuel cycle. Since tritium is not a naturally existing isotope, attaining tritium selfsufficiency is necessary for self-sustaining fusion plants operating on the D-T fuel cycle. Tritium is bred in a lithium-containing blanket surrounding the plasma. Once tritium is generated, it needs to be collected, proce...

Vehicle coating is an important component of automotive manufacturing. The paint shop constitutes the plurality of initial investment in an automotive assembly plant, consumes the majority of energy used in the plant’s operation, and generates significant waste from paint overspray. The coating process also results in the emission of polluting volatile organic compounds (VOCs). New paint techno...

Advancements in technology have enabled many computer vendors to offer computer systems with gigabytes of memory at affordable prices. The availability of an abundance of real memory in a computer creates new opportunities for software designers — very large data objects can be made memory resident to support very efficient processing. However, crash recovery becomes more time consuming because...

Execution-driven simulation has become the primary method for evaluating architectural techniques as it facilitates rapid design space exploration without the cost of building prototype hardware. To date, most simulation systems have either focused on the cycle-accurate modeling of user-level code while ignoring operating system and I/O effects, or have modeled complete systems while abstractin...