Results 81 to 90 of about 48,368 (320)

A Streaming Data Clustering Method Based on Dual Strategies Improved DENCLUE

IEEE Access
Streaming data arrives continually and is characterized by fast, massive, dynamic evolution and instability. Different from traditional static data clustering, streaming data clustering algorithms need to consider concept drift, outlier handling ...
Ting Cai, Jiazhi Lv, Zhiwei Ye, Xiang Li, Wen Zhou, Orest Kochan   +5 more
doaj   +1 more source

High-power laser experiments to study collisionless shock generation

EPJ Web of Conferences, 2013
A collisionless Weibel-instability mediated shock in a self-generated magnetic field is studied using two-dimensional particle-in-cell simulation [Kato and Takabe, Astophys. J. Lett. 681, L93 (2008)].
Sakawa Y., Kuramitsu Y., Morita T., Kato T., Tanji H., Ide T., Nishio K., Kuwada M., Tsubouchi T., Ide H., Norimatsu T., Gregory C., Woolsey N., Schaar K., Murphy C., Gregori G., Diziere A., Pelka A., Koenig M., Wang S., Dong Q., Li Y., Park H.-S., Ross S., Kugland N., Ryutov D., Remington B., Spitkovsky A., Froula D., Takabe H.   +29 more
doaj   +1 more source

Particle Acceleration, Magnetic Field Generation, and Associated Emission in Collisionless Relativistic Jets

, 2008
Nonthermal radiation observed from astrophysical systems containing relativistic jets and shocks, e.g., active galactic nuclei (AGNs), gamma-ray bursts (GRBs), and Galactic microquasar systems usually have power-law emission spectra.
G. J. FISHMAN, Hededal C. B., Jackson J. D., K.-I. NISHIKAWA, P. HARDEE, Y. MIZUNO   +5 more
core   +1 more source

Materials and System Design for Self‐Decision Bioelectronic Systems

Advanced Materials, EarlyView.
This review highlights how self‐decision bioelectronic systems integrate sensing, computation, and therapy into autonomous, closed‐loop platforms that continuously monitor and treat diseases, marking a major step toward intelligent, self‐regulating healthcare technologies.
Qiankun Zeng, Hong Liu, Yongheng Zhang, Youbin Zheng, Xuyin Ding, Mengni Zhu, Guoyue Shi, Yan Wang, Hossam Haick, Min Zhang   +9 more
wiley   +1 more source

Modeling Bell's Non-resonant Cosmic Ray Instability

, 2008
We have studied the non-resonant streaming instability of charged energetic particles moving through a background plasma, discovered by Bell (2004). We confirm his numerical results regarding a significant magnetic field amplification in the system.
Achterberg A., Bell A. R., Dolginov A. Z., Fedorov Yu. I., H. J. Völk, Krymsky G. F., Lagage P. O., McKenzie J. F., Ptuskin V. S., V. N. Zirakashvili, V. S. Ptuskin   +10 more
core   +1 more source

Kelvin–Helmholtz instability in self-gravitating streams [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
ABSTRACT Self-gravitating gaseous filaments exist on many astrophysical scales, from sub-pc filaments in the interstellar medium to Mpc scale streams feeding galaxies from the cosmic web. These filaments are often subject to Kelvin–Helmholtz Instability (KHI) due to shearing against a confining background medium.
Han Aung, Nir Mandelker, Daisuke Nagai, Avishai Dekel, Yuval Birnboim   +4 more
openaire   +2 more sources

Enhancing Grayscale E‐Beam Lithography: Thermal Treatment of Novolak‐Based Resist for 3D Nanostructures

Advanced Materials Interfaces, EarlyView.
Surface roughness and chemistry of novolak‐based grayscale resists are dependent on both exposure dose and post‐exposure thermal treatment. The observed trends align with the viscoelastic phase separation model and underscore the need to consider both thermodynamic and kinetic factors in resist processing. By tailoring thermal treatment, it is possible
Rahul Singh, Christian Vinther Bertelsen, Neeti Kalyani, Maria Dimaki, Winnie Edith Svendsen   +4 more
wiley   +1 more source

Filament Formation due to Diffusive Instabilities in Dusty Protoplanetary Disks

The Astrophysical Journal
We report the finding of a new, local diffusion instability in a protoplanetary disk which can operate in a dust fluid, subject to mass diffusion, shear viscosity, and dust–gas drag, provided the diffusivity, viscosity, or both, decrease sufficiently ...
Konstantin Gerbig, Min-Kai Lin, Marius Lehmann   +2 more
doaj   +1 more source

Light‐Controlled Exposure of Cancer Cells to Reactive Oxygen Species Using Organic Semiconductor Thin Films

Advanced Materials Interfaces, EarlyView.
Spin‐coated films of the conjugated polymer F8T2 (poly (9,9‐dioctylfluorene‐alt‐bithiophene)) generate superoxide at the film‐medium interface, enabling precise delivery of reactive oxygen species (ROS) as visible‐light “ROS patches.” Coated surfaces drive rapid, localised cytotoxicity in MCF7 cancer monolayers under white light, providing a reagent ...
Joe Kaye, Niculina Miron, Benjamin Fortes Mayer, Yukai Shi, Boyuan Chen, Lewis Krzeczkowski, Robert J. E. Westbrook, Saif A. Haque, Ali Salehi‐Reyhani   +8 more
wiley   +1 more source

Streaming Instability and Turbulence: Conditions for Planetesimal Formation

The Astrophysical Journal
The streaming instability (SI) is a leading candidate for planetesimal formation, which can concentrate solids through two-way aerodynamic interactions with the gas.
Jeonghoon Lim, Jacob B. Simon, Rixin Li, Philip J. Armitage, Daniel Carrera, Wladimir Lyra, David G. Rea, Chao-Chin Yang, Andrew N. Youdin   +8 more
doaj   +1 more source