منابع مشابه
Assessment Delivery Engine for QTIv2 Tests
The IMS Question and Test Interoperability (QTI) standard has not had a great takeup in part due to the lack of tools. In the 2006 JISC Capital, three Assessment projects were commissioned: item authoring, item banking, and QTI-compliant test delivery. This paper describes the ̳ASDEL‘ test delivery engine, focusing upon its architecture, its relation to the item authoring and item banking servi...
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This chapter discusses artificial computational intelligence methods as applied to cost prediction. We present the development of a suite of hybrid fuzzy-neural systems for predicting the cost of performing engine tests at NASA’s Stennis Space Center testing facilities. The system is composed of several adaptive network-based fuzzy inference systems (ANFIS), with or without neural subsystems. T...
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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...
متن کاملEucalyptus Biodiesel as an Alternative to Diesel Fuel: Preparation and Tests on DI Diesel Engine
Nowadays, the increasing oil consumption throughout the world induces crucial economical, security, and environmental problems. As a result, intensive researches are undertaken to find appropriate substitution to fossil fuels. In view of the large amount of eucalyptus trees present in arid areas, we focus in this study on the investigation of using eucalyptus biodiesel as fuel in diesel engine....
متن کاملTests at Subsonic Speeds on a Half-Wing with a Fan Engine Nacelle
SUMMARY Flutter tests have been made on a half-wing model with a fan-engine nacelle attached by a pylon at an inboard section. The model was nominally rigid and flexibilities in pitch and roll were introduced at the root. Measurements were made of the flutter characteristics of the model at Mach numbers of 0.6 and 0.8 over a range of dynamic pressures using three different methods of analysis. ...
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ژورنال
عنوان ژورنال: Science
سال: 1900
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.12.308.802