Wind tunnel experiments were conducted to understand boundary layer separation control on airfoils. The objective of this research was to better implement flow control strategies with single dielectric barrier discharge (SDBD) plasma actuator designs for airfoils that exhibit both leading and trailing edge stall characteristics at realistic flight speeds and Reynolds numbers. The NASA energy ef...

Implicit finite difference schemes for solving two dimensional and three dimensional Euler and Navier-Stokes equations will be addressed. The methods are demonstrated in fully vectorized codes for a CRAY type architecture. We shall concentrate on the Beam and Warming implicit approximate factorization algorithm in generalized coordinates. The methods are either time accurate or accelerated non-...

To ensure that users do not choose weak personal identification numbers (PINs), many banks give out system-generated PINs, using computers to generate random PINs. 4-digit is the most commonly used PIN length, but 6-digit system-generated PINs are also becoming popular. The increased security we get from using system-generated PINs, however, comes at the cost of memorability. And while banks ar...

This paper describes the methodology used for crosswalking occupation-based measures of Green (“environmentally friendly”) and Brown (“polluting”) jobs from Standard Occupational Classification (SOC) system to International Occupation (ISCO) 08 at most detailed (4-digit) level. The original, task-based Greenness scores by Vona et al. (2018) are provided 8-digit SOC level, industry-based Brownne...

The ability to symbolise numbers using numerals is unique humans and the acquisition of this needs be done via learning [1]. Repeated exposure sensory input can result in learning-induced alterations brain, forming memory engrams that are crucial for storage retrieval [2]. Familiarity an important factor affects performance because familiar stimuli tend have stronger strength with pre-existing ...

A lattice-Boltzmann method has been employed to study the aeroacoustics and aerodynamics of airfoils equipped with leading edge treatments, namely porous serrations. The present aims identify differences in noise reduction mechanisms between two treatments. Within context turbomachinery applications, undergo aerodynamic excitation due impingement turbulent wake shed by an upstream rod. Two airf...

Background Tetralogy of Fallot is the most common cyanotic congenital heart disease. However, its pathogenesis remains to be clarified. The purpose of this study was to identify the genetic variants in Tetralogy of Fallot by whole exome sequencing. Methods Whole exome sequencing was performed among eight small families with Tetralogy of Fallot. Differential single nucleotide polymorphisms and...

An implicit, Navier-Stokes solution algorithm is presented for the computation of turbulent flow on unstructured grids. The inviscid fluxes are computed using an upwind algorithm and the solution is advanced in time using a backward-Euler time-stepping scheme. At each time step, the linear system of equations is approximately solved with a point-implicit relaxation scheme. This methodology prov...

The number 6174 arises in a semifamous problem in recreational mathematics: take any 4-digit number which uses more than one digit and find the difference between the numbers formed by writing the digits in descending order and ascending order (e.g., starting with 4083 yields 8430− 0348= 8082). Iterate this process using the difference as the new 4-digit number. It was first discovered by the I...

The purpose of this report is to demonstrate how to measure the magnitude of expression of the fetal alcohol syndrome (FAS) facial phenotype using the new 4-Digit Diagnostic Code and the previously developed D-score and to demonstrate how these two measures of the FAS facial phenotype correlate with brain function and structure; correlations that fail to be identified by the older gestalt metho...