Results 81 to 90 of about 220,793 (302)

A novel feed rate scheduling method based on Sigmoid function with chord error and kinematics constraints [PDF]

, 2021
Hexiong Li, Xin Jiang, Guanying Huo, Cheng Su, Bolun Wang, Yifei Hu, Zhiming Zheng   +6 more
openalex   +1 more source

Fluorescent Polymeric Nanofibers as Ratiometric Multiplexed Skin Sensors of pH and Oxygen

Advanced Healthcare Materials, EarlyView.
Fluorescent polymeric nanofibers and nanorods are produced as ratiometric sensors of two important physiological parameters: pH and oxygen. They operate by dual Forster resonance energy transfer from large number of energy donor dyes to limited number of two distinct energy acceptors, enabling simultaneous sensing of pH and oxygen.
Rémi Pelletier, Anila Hoskere Ashoka, Andrey S. Klymchenko   +2 more
wiley   +1 more source

Certain subclass of univalent functions involving modified sigmoid function

Journal of Physics: Conference Series, 2019
By making use of a generalised Sǎlǎgean differential operator involving modified real sigmoid function, the authors defined a certain subclass of univalent functions denoted by Gγ (β,ξ,µ,η). Various geometric properties of the class were established.
M O Oluwayemi, Olubunmi A Fadipe-Joseph, U A Ezeafulukwe   +2 more
openaire   +1 more source

Peptomer Linkers Enable Kinetic Control over Co‐Delivery of Multiple Chemotherapeutics

Advanced Healthcare Materials, EarlyView.
A key challenge in combinatorial chemotherapeutic drug delivery is independent control over release kinetics, especially with drugs of similar size and structure. Here, peptoid substitutions to proteolytically degradable peptides enabled the design of fast and slow‐releasing drug linkers.
Carolyn M. Watkins, Samuel L. Hallam, Mariah J. Austin, Adrianne M. Rosales   +3 more
wiley   +1 more source

A Droop Control Strategy for Improving Reactive Power Sharing and Suppressing Frequency and Voltage Deviation in Islanded Microgrids

IEEE Access
Conventional droop control strategies use a fixed droop coefficients, which creates a contradiction between dynamic response speed and power output range. To address this problem, a variable droop coefficient control strategy based on sigmoid function is
Jian Luo, Juxiang Luo, Yanyan Wen
doaj   +1 more source

Characterization of Complex Stacking of Semiconductors Through Near Field Imaging and Spectroscopy

Advanced Materials, EarlyView.
SNOM imaging and spectroscopy on a mechanically cleaved facet is used to characterize the different layers of complex epitaxial heterostructures composed of a type II superlattice and highly doped semiconductors. Both the geometrical parameters of the stack and the optical properties of the individual layers and of the interfaces are retrieved, as well
Laure Tailpied, Clément Gureghian, Fréderic Fossard, Jean‐Sébastien Mérot, Jean‐Baptiste Rodriguez, Fernando Gonzalez‐Posada Flores, Grégory Vincent, Thierry Taliercio, Baptiste Fix   +8 more
wiley   +1 more source

Asymmetrical novel hyperchaotic system with two exponential functions and an application to image encryption

Nonlinear Engineering
In this article, asymmetrical novel system with two exponential functions, which can show hyperchaotic behavior, has been proposed. Although new system possesses only one unstable equilibrium.
Shukur Ali A., AlFallooji Mohanad A., Pham Viet-Thanh   +2 more
doaj   +1 more source

A Modified Soft-thresholding Approach in the Transcriptomic Analysis of Adaptation of E.coli to Alternating Substrate Conditions

Hittite Journal of Science and Engineering, 2019
The expression of genes that are functionally related is considered to change together in response to deterioration of internal or external order. The system-level analysis of these changes has become widespread in recent years.
Muhammed Erkan Karabekmez
doaj   +1 more source

Transistor‐Level Activation Functions via Two‐Gate Designs: From Analog Sigmoid and Gaussian Control to Real‐Time Hardware Demonstrations

Advanced Materials, EarlyView.
Screen gate‐based transistors are presented, enabling tunable analog sigmoid and Gaussian activations. The SA‐transistor improves MRI classification accuracy, while the GA‐transistor supports precise Gaussian kernel tuning for forecasting. Both functions are implemented in a single device, offering compact, energy‐efficient analog AI processing ...
Junhyung Cho, Youngmin Han, Won Woo Lee, Youngwoo Yoo, Kannan Udaya Mohanan, Chang‐Hyun Kim, Junhwan Choi, Young‐Joon Kim, Wonjun Shin, Hocheon Yoo   +9 more
wiley   +1 more source

Finite-Time Super-Twisting Controller Based on SESO Design for RLV Re-Entry Phase

IEEE Access, 2019
In this paper, an improved extended state observer (ESO) based on sigmoid function and a finite-time convergence attitude controller are designed for reusable launch vehicle (RLV) in the re-entry phase. First, a control-oriented model (COM) of the RLV is
Rongjun Mu, Jiaye Chen, Keke Peng, Xin Zhang, Yanpeng Deng, Naigang Cui   +5 more
doaj   +1 more source