Results 31 to 40 of about 269,885 (304)

Conceptual Design of the Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS) for the Subaru Telescope

open access: yes, 2012
Recent developments in high-contrast imaging techniques now make possible both imaging and spectroscopy of planets around nearby stars. We present the conceptual design of the Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS), a lenslet-
Brandt, Timothy   +16 more
core   +1 more source

A novel voltage sag approach during unintentional islanding scenarios: A survey from real recorded events [PDF]

open access: yes, 2019
In this paper, a new voltage sag approach is analytically modelled and validated using both simulation and field measurements. The main aspect of this approach is to propose a new voltage sag feature which appears during unintentional islanding ...
Bosch Tous, Ricardo   +2 more
core   +1 more source

Mathematical Model and Matlab Simulation of Strapdown Inertial Navigation System

open access: yesModelling and Simulation in Engineering, 2012
Basic principles of the strapdown inertial navigation system (SINS) using the outputs of strapdown gyros and accelerometers are explained, and the main equations are described. A mathematical model of SINS is established, and its Matlab implementation is
Wen Zhang, Mounir Ghogho, Baolun Yuan
doaj   +1 more source

AUTOMATIC ADJUSTER FOR NON-STATIONARY OBJECTS WITH EXTENDED AREA OF NORMAL OPERATION

open access: yesАвтоматизация технологических и бизнес-процессов, 2017
Many objects automatic control unsteady. This is manifested in the change of their parameters. Therefore, periodically adjust the required parameters of the controller. This work is usually carried out rarely. For a long time, regulators are working with
Arthur Pavlov
doaj   +1 more source

CATALYTIC REFORMING OF HEAVY NAPHTHA, ANALYSIS AND SIMULATION

open access: yesDiyala Journal of Engineering Sciences, 2011
In this paper, one-dimensional steady-state mathematical model of a semi regenerative naphtha catalytic reforming process had been made. This model incorporated a detailed kinetic model involving 24 components, 1 to 11 carbon atoms for paraffins (n and ...
Zaidoon M. Shakoor
doaj   +1 more source

Investigation of New Hampshire hydropower potential [PDF]

open access: yes, 2012
The popularity of green and renewable energy has risen sharply in recent years, and hydropower has consistently been the most common form of renewable energy in both the US and the state of New Hampshire.
Murray, Maxwell
core   +1 more source

Long‐Term Follow‐Up of Chemotherapy‐Associated Biological Aging in Women With Early Breast Cancer

open access: yesAging and Cancer, EarlyView.
Women threated with adjuvant chemotherapy for early breast cancer have sustained long‐term increase in p16INK4a,, a robust marker of cell senescence, suggesting a chemotherapy‐associated age acceleration. p16INK4a as well as other biomarkers may identify patients at greatest risk for senescence‐related diseases of aging.
Hyman B. Muss   +12 more
wiley   +1 more source

Customization of the angular spectrum method for calculating the acoustic piston field transmitted through a solid plate using MATLAB

open access: yesMethodsX, 2023
The angular spectrum (AS) model is customized to calculate the spatial acoustic pressure field generated by a piston source and transmitted through a steel plate immersed in water, for normal beam incidence.
M.M. Sæther
doaj   +1 more source

MATLAB Modeling of Component in Electrical Discharge Machining (EDM) Pulses

open access: yesMedia Journal of General Computer Science, 2023
Electrical Discharge Machining (EDM), is a machining technique for working with conductive materials. During the EDM process, electrical discharge energy is transformed into thermal energy, leading to the erosion of the workpiece. The energy utilized by the EDM process is represented by the time-dependent current, which determines the energy density ...
Betantya Nugroho   +3 more
openaire   +1 more source

A new internal combustion engine configuration: opposed pistons with crank offset [PDF]

open access: yes, 2007
[Abstract]: Theoretical and experimental performance results for a new internal combustion engine configuration are presented in this paper. The engine is a piston ported, spark ignition petrol engine which consists of two opposed pistons in a single ...
Buttsworth, David R., Malpress, Ray
core   +1 more source

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