Results 101 to 110 of about 125,042 (305)

Novel GPID: Grünwald–Letnikov Fractional PID for Enhanced Adaptive Cruise Control

Fractal and Fractional
This study demonstrates that the Grünwald–Letnikov fractional proportional–integral–derivative (GPID) controller outperforms traditional PID controllers in adaptive cruise control systems, while conventional PID controllers struggle with nonlinearities ...
Diaa Eldin Elgezouli, Hassan Eltayeb, Mohamed A. Abdoon   +2 more
doaj   +1 more source

Simulator study of the low-speed handling qualities of a supersonic cruise arrow-wing transport configuration during approach and landing [PDF]

A fixed-based simulator study was conducted to determine the low-speed flight characteristics of an advanced supersonic cruise transport having an arrow wing, a horizontal tail, and four dry turbojets with variable geometry turbines. The primary piloting
Grantham, W. D., Neubauer, M. J., Jr., Nguyen, L. T., Smith, P. M.   +3 more
core   +1 more source

Executive Function and Entrepreneurial Opportunity Exploitation Under Risk and Uncertainty

Strategic Change, EarlyView.
ABSTRACT This study examines how executive functions shape entrepreneurial opportunity exploitation under different knowledge environments. Drawing on Knight's distinction between risk and uncertainty, we conducted a vignette experiment with 200 working adults.
Ipek Koparan, Gorkem Aksaray, Tatiana Manolova, Linda Edelman   +3 more
wiley   +1 more source

Outdoor test stand performance of a convertible engine with variable inlet guide vanes for advanced rotorcraft propulsion [PDF]

A variable inlet guide van (VIGV) type convertible engine that could be used to power future high-speed rotorcraft was tested on an outdoor stand. The engine ran stably and smoothly in the turbofan, turboshaft, and dual (combined fan and shaft) power ...
Mcardle, Jack G.
core   +1 more source

Two HSCT Mach 1.7 low sonic boom designs [PDF]

, 1992
The objective of this study was to provide low sonic boom concepts, geometry, and analysis to support wind tunnel model designs. Within guidelines provided by NASA, two High Speed Civil Transport (HSCT) configurations were defined with reduced sonic boom
Haglund, George T., Ogg, Steven S.
core   +1 more source

Lactuca sativa L. losses and wastes as a source of biobased ingredients

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND The growing global population and increasing consumer focus on healthy eating challenge the agricultural sector to ensure both sustainable food production and safety. Lettuce (Lactuca sativa Mill.), the most cultivated leafy vegetable worldwide, can lose up to 40% of its weight during processing.
Joana PB Rodrigues, Tayse FF da Silveira, Daniele B Rodrigues, Laura Domínguez, Patricia Morales, Tânia CSP Pires, Maria Beatriz PP Oliveira, Ângela Fernandes, Lillian Barros   +8 more
wiley   +1 more source

Circulation control propellers for general aviation, including a BASIC computer program [PDF]

The feasibility of replacing variable pitch propeller mechanisms with circulation control (Coanada effect) propellers on general aviation airplanes was examined.
Braslow, A. L., Butterfield, A. J., Taback, I.   +2 more
core   +1 more source

Combining multibeam and single beam echosounders for quantifying gas bubble release from the seafloor

Limnology and Oceanography: Methods, EarlyView.
Abstract Marine gas bubble release is a worldwide phenomenon that impacts the local marine ecosystem and contributes to carbon fluxes with respect to global warming. It is still challenging to assess gas flow for large seep areas (tens of km2), but recent advances in calibrating and processing multibeam echosounder (MBES) data make this problem ...
P. Urban, M. E. Veloso‐Alarcón, J. Greinert   +2 more
wiley   +1 more source

Research on adaptive cruise control strategy of pure electric vehicle with braking energy recovery

Advances in Mechanical Engineering, 2017
In this article, an adaptive cruise control algorithm with braking energy recovery is proposed. First, the influence of the working characteristics of motor and battery on the energy recovery is analyzed in the braking energy recovery system. Considering
Chengwei Sun, Liang Chu, Jianhua Guo, Dapai Shi, Tianjiao Li, Yunsong Jiang   +5 more
doaj   +1 more source

Sediment trap preservative choice impacts particle‐associated microbial community composition

Limnology and Oceanography: Methods, EarlyView.
Abstract Understanding and quantifying the microbial contribution to particulate organic matter (POM) flux and carbon cycling in the ocean relies largely on the collection of sinking POM. A critical aspect of evaluating microbial communities on sediment trap‐collected POM is their preservation until recovery and sample processing.
Nicola L. Paul, Colleen A. Durkin, Sebastian Sudek, Matthieu Bressac, Philip W. Boyd, Eric J. Tappa, Claudia R. Benitez‐Nelson, Alyson E. Santoro   +7 more
wiley   +1 more source