SUMMARY Wind-tunnel tests have been made to assess the aerodynamic potential of an overwing installation for fan-jet engines on a typlcal modern transport aeroplane. Low-speed tests on a complete model with free-flow nacelles and tests at higher speed on a partial model incorporating a blown jet are described; it is concluded that the lift-dependent drag associated with such an installation wou...

In [2] Fan and Pollicott gave an estimate of convergence speed of the iterations fSn g fgn=1 ( Sg being the Ruelle operator de ̄ned by a normalized summable variation potential function g on a subshift of ̄nite type.) Later on Fan and Jiang [1] extended it to locally expansive Dini dynamical system. It is known that the systems they considered have the bounded distortion property (BDP). We extend...

Information regarding the long-term performance of stand-alone room airfilters is limited. In this study, laboratory and field tests were carried out to determine the effectiveness and performance of room filters that are easily deployed in essentially any type of house. Tests were conducted in houses containing strong PM sources, specifically cigarette smokers. Using commercially available fou...

In this paper we explore the tradeoff between the leakage power and fan power to dynamically migrate tasks to minimize the overall power consumption in a homogeneous many-core processor. Our analysis shows that the overall power can be minimized if a task allocation for minimum peak temperature is adopted together with an intelligent fan speed adjustment that finds the optimal tradeoff between ...

This tutorial will talk about issues related to performance of arithmetic algorithms when implemented in silicon. Most of the algorithms in use today are based on old and antiquated methods of counting the number of logic gates in the critical path. This produces inaccurate and misleading results. The importance of loading and wire delay is not taken into account by most. As the technology scal...

We investigated the time course of associative recognition using the response signal procedure, whereby a stimulus is presented and followed after a variable lag by a signal indicating that an immediate response is required. More specifically, we examined the effects of associative fan (the number of associations that an item has with other items in memory) on speed-accuracy tradeoff functions ...

This research paper describes the design of a room temperature and humidity controller using fuzzy logic. The proposed model consists of two fuzzy logic controllers to control temperature and humidity respectively. The first controller accepts two input valuesthe current temperature as detected by temperature sensor and its deviation from user set-temperature, and controls the speed of heat-fan...

The chilled-water systems, mainly consisting of electric chillers and cooling towers, are crucial for the ventilating and air conditioning systems in commercial buildings. Energy efficient operation of such systems is thus important for the energy saving of commercial buildings. This paper presents an extremum seeking control (ESC) scheme for energy efficient operation of the chilled-water syst...

We present an experimental study, comprising acoustic and mean-flow measurements, of several fan-flow deflector configurations in a subscale dual-stream supersonic turbofan nozzle. The deflectors encompassed internal vanes and external wedges. The aim of the study was to investigate trends of high-frequency noise reduction, in the direction of peak emission, versus the distortion of the velocit...