Results 221 to 230 of about 11,934 (259)

Enhancing the lift under budget constraints

Proceedings of the eleventh ACM SIGKDD international conference on Knowledge discovery in data mining, 2005
A lift curve, with the true positive rate on the y-axis and the customer pull (or contact) rate on the x-axis, is often used to depict the model performance in many data mining applications, especially in the area of customer relationship management (CRM).
Lian Yan, Michael Fassino, Patrick Baldasare   +2 more
openaire   +1 more source

High-Lift Enhancement Using Active Flow Control

6th AIAA Flow Control Conference, 2011
The high-lift performance of an airfoil with a single-element flap is enhanced using fluidic actuation based on synthetic jet technology. Acutation is implemented using a spanwise array of individually controlled discrete synthetic jets with variable spanwise spacing that issue in a direction nominally-tangential to the flap immediately upstream of ...
Michael Desalvo, Ari Glezer, Edward Whalen   +2 more
openaire   +1 more source

Lift Enhancement over a Flexible Delta Wing

2nd AIAA Flow Control Conference, 2004
*† Passive lift enhancement over a flexible, low-sweep delta wing has been demonstrated as a potential method for control of vortex-dominated wing flows. The lift enhancement was achieved in the post-stall region of a wing of 50° leading edge sweep. An increase in timeaveraged lift coefficient of up to 45%, and a delay in stall of up to 9 degrees were ...
Gordon Taylor, Ismet Gursul
openaire   +1 more source

Roughness related lift enhancement to symmetric airfoils

15th Applied Aerodynamics Conference, 1997
Russian researchers have reported an effect in which an incremental lift force is created on a symmetric wing in a flow as a result of the difference in the roughness of its upper and lower surfaces. The effect includes the generation of lift for the symmetric wing at zero degrees angle-ofattack and an increase in the lift-to-drag ratio at low to ...
Robert Ranzenbach, Mark Beierle, John Anderson, Jr., Robert Ranzenbach, Mark Beierle, John Anderson, Jr.   +5 more
openaire   +1 more source

Image enhancement in lifting wavelet transform domain

AIP Conference Proceedings, 2019
In this paper, the scheme of image enhancement in lifting wavelet transform (LWT) domain using the singular value decomposition (SVD) and artificial bee colony (ABC) algorithm is proposed. The proposed algorithm uses 1-level LWT to break up the original image into different subbands and the LL subband is utilized for adaptive thresholding whereas ABC ...
Anuj Bhardwaj, Anjali Wadhwa, Vivek Singh Verma   +2 more
openaire   +1 more source

The Image Enhancement Technology Based on Lifting Wavelet

Applied Mechanics and Materials, 2014
There are many disadvantages for Image enhancement with Mallat wavelet, such as huge computation, bad real time capability and difficulty to realize by hardware. To solve these problems for enhancing non flowing and discontinuous image, introducing the use of lifting wavelet with the adaptive predicting coefficient and the updating coefficient.
Fu Tian Guo, Xin Hong Liu, Cun Zhao
openaire   +1 more source

Lifting Defect Improvement of Plasma Enhanced Nitride

ECS Meeting Abstracts, 2014
ABSTRACT Plasma enhanced nitride (PESiN) has been applied for various layers in semiconductor device such as spacer, etch stopping layer, strain layer, hard mask. In order to match with each function of PESiN, process condition should be well optimized in terms of etch rate, stress, uniformity.
Hyunkwan Yu, Dong Suk Shin, Sangkoo Kang, Moonhan Park, Nea-In Lee, Ja-Hm Ku, Yonghan Roh   +6 more
openaire   +1 more source

Low-Speed Lift Enhancement of the Vortex-Lift Waverider During Pitching Oscillation

Journal of Aircraft
The vortex-lift waverider presents great potentiality in the design of wide-speed-range hypersonic vehicles. However, its constrained lift characteristics, resulting from vortex breakdown at low-speed, high-angle-of-attack (AOA) conditions, restrict its capability for horizontal takeoff and landing.
Feng Qu, Mingyu Li, Qian Zhao, Qing Wang
openaire   +1 more source

Lift Enhancement for Upper Surface Blowing Airplanes

31st AIAA Applied Aerodynamics Conference, 2013
Various flow control techniques are applied to airplane configurations that utilize Upper Surface Blowing (USB) in order to enhance their takeoff and landing capabilities. These techniques include geometrical changes to the lifting surfaces and the engine nozzle.
Yoram Yadlin, Arvin Shmilovich
openaire   +1 more source

High-Lift Enhancement Using Fluidic Actuation

48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010
The performance of an airfoil equipped with a high-lift system based on a single-element flap configuration is enhanced by the manipulation of vorticity concentrations near the airfoil surface using fluidic actuation. The actuation, which is effected downstream of the juncture between the main airfoil body and the flap, leads to a significant extension
Michael DeSalvo, Edward Whalen, Ari Glezer   +2 more
openaire   +1 more source