a r t i c l e i n f o Using cross-national comparative analysis, this paper discusses the reasons why France has succeeded in partially privatizing its most recently constructed high speed line, while the U.S. has not reached this stage. The authors argue that France, with an interventionist government, diverged from the U.S. during the Great Depression by nationalizing its private railways and...

The system is air conditioning system in operating room. The main objective of the system was implemented to provide air balance and temperature necessary conditions and to control airflow system for ventilation units in operating room. The operation room can be controlled with fuzzy expert system and describes the desired outputs. Input parameters such as temperature, humidity, oxygen and part...

Abstract Condition monitoring arises as a valuable industrial process in order to assess the health of rotating machinery, providing early and accurate warning potential failures allowing for planning effective realization preventative maintenance actions. Nowadays, machinery (gas turbines, wind etc.) manufacturers adopt new business models, not only equipment itself but also additionally takin...

Due to ongoing research work, a prototype test rig for testing high speed motors/generators has been developed. Its design is quite unique as the two machines share single shaft with no support bearings between them. A very maximum operating speed, up 80,000 rpm, was required. Because of need minimise vibration during operation at rotational speeds, rolling were used. To eliminate influence hig...

Abstract In this study, the optical diagnostics techniques of infrared (IR) absorption and chemiluminescence were applied to a racing engine. A small M5 IR sensor and Cassegrain optics sensors were developed to measure in-cylinder fuel concentrations and local chemiluminescence intensities. The small IR sensor was able to withstand racing engine operating conditions up to 16,000 rpm and exhibit...

Various types of valves are installed in the emergency discharge facility dams, and when water is discharged an emergency, vibration may occur valve depending on operating conditions. In this study, for hollow jet valve, which frequently used dam, flow phenomenon occurring according to speed was observed characteristics were investigated through CFD.In particular, closed, casing opened while in...

In order to increase the operating speed of a CMOS image sensor (CIS), a new technique of digital correlated double sampling (CDS) is described. In general, the fixed pattern noise (FPN) of a CIS has been reduced with the subtraction algorithm between the reset signal and pixel signal. This is because a single-slope analog-to-digital converter (ADC) has been normally adopted in the conventional...