Results 101 to 110 of about 8,079,144 (302)

Cyclicity of a fake saddle inside the quadratic vector fields

Journal of Differential Equations, 2015
This paper concerns the study of small-amplitude limit cycles that appear in the phase portrait near an unfolded fake saddle singularity. This degenerate singularity is also known as a impassable grain. The normal form of the unperturbed vector field is like a degenerate flow box. Near the singularity,the phase portrait consists of parallel fibers, all
P. De Maesschalck, S. Rebollo-Perdomo, J. Torregrosa   +2 more
openaire   +4 more sources

Uniqueness of N $$ \mathcal{N} $$ = 2 and 3 pure supergravities in 4D

Journal of High Energy Physics, 2018
After proving the impossibility of consistent non-minimal coupling of a real Rarita-Schwinger gauge field to electromagnetism, we re-derive the necessity of introducing the graviton in order to couple a complex Rarita-Schwinger gauge field to ...
Nicolas Boulanger, Bernard Julia, Lucas Traina   +2 more
doaj   +1 more source

Establishment of a self-propagating population of the African malaria vector Anopheles arabiensis under semi-field conditions [PDF]

, 2010
Background: The successful control of insect disease vectors relies on a thorough understanding of their ecology and behaviour. However, knowledge of the ecology of many human disease vectors lags behind that of agricultural pests.
Ferguson, Heather M., Knols, B.G.J., Bart GJ Knols, Ferguson, H.M., Ng'habi Kija RN, Mwasheshi, Dickson, Ferguson Heather M, Knols Bart GJ, Knols, Bart G. J., Heather M Ferguson, Ng'habi, K.R.N., Ng'habi, Kija R. N., Dickson Mwasheshi, Knols, Bart G J, Ng'habi, Kija R N, Kija RN Ng'habi, Mwasheshi, D., Ferguson, Heather M, Mwasheshi Dickson   +18 more
core   +1 more source

Integration of Reconfigurable p‐Bit and 1R Crossbar Array for Memristive Probabilistic Computing

Advanced Science, EarlyView.
A memristive probabilistic computing system is demonstrated by integrating stochastic p‐bits based on volatile memristors with a 1R crossbar array encoding interaction weights. The system performs weighted‐sum operations across the array and updates p‐bits iteratively.
Keunho Soh, Ji Eun Kim, Suk Yeop Chun, Su In Hwang, Byung Seok Kim, Young Jae Lee, Ho Won Jang, Jung Ho Yoon   +7 more
wiley   +1 more source

Ghost-free vector superfield actions in supersymmetric higher-derivative theories

Journal of High Energy Physics, 2017
We systematically construct ghost-free higher-derivative actions of Abelian vector supermultiplets in four-dimensional N = 1 $$ \mathcal{N}=1 $$ global supersymmetric theories.
Toshiaki Fujimori, Muneto Nitta, Keisuke Ohashi, Yusuke Yamada, Ryo Yokokura   +4 more
doaj   +1 more source

Intrinsic Phonons as a Dynamic Control Knob for Catalytic Reactivity in 2D Materials

Advanced Science, EarlyView.
Intrinsic phonon excitations are demonstrated to serve as a dynamic control knob for catalytic reactivity in 2D materials. Mode‐selective lattice vibrations reconstruct the electronic structure, lower oxygen evolution reaction barriers, establishing a phonon‐engineering paradigm for dynamically regulating electrocatalysis beyond conventional static ...
Kai Ren, Feifan Wang, Yong‐Wei Zhang, Tianyang Liu, Liangzhi Kou, Yu Jing   +5 more
wiley   +1 more source

Metabolic Reprogramming in Glioblastoma Stem Cells Promotes Radiation Resistance Through a H3K18la/USP30/MBOAT2 Axis

Advanced Science, EarlyView.
LDHA‐driven lactate production in mesenchymal glioma stem cells promotes p300‐dependent H3K18 lactylation, activates USP30 transcription, and stabilizes MBOAT2 to remodel phosphatidylethanolamines toward ferroptosis‐resistant PE‐MUFA species. Disrupting this metabolic–epigenetic–lipid circuit enhances ferroptosis and sensitizes glioblastoma to ...
Zong Miao, Wei Gu, Yimin Ren, Chenfei Lu, Wanzhi Cai, Junnan Lu, Zhongyuan Bao, Yanan Zhou, Rong Li, Ke Jin, Chao Chen, Hongxiang Wang, Lei Xu, Juxiang Chen   +13 more
wiley   +1 more source

Weyl geometric gravity black holes in light of the Solar System tests

European Physical Journal C: Particles and Fields
Weyl geometric gravity theory, in which gravitational action is constructed from the square of the Weyl curvature scalar and the strength of the Weyl vector, has been intensively investigated recently.
Mohsen Khodadi, Tiberiu Harko
doaj   +1 more source

Support Vector Machines in R [PDF]

Being among the most popular and efficient classification and regression methods currently available, implementations of support vector machines exist in almost every popular programming language.
Kurt Hornik, David Meyer, Alexandros Karatzoglou   +2 more
core  

Robust Linear and Support Vector Regression [PDF]

, 2000
The robust Huber M-estimator, a differentiable cost function that is quadratic for small errors and linear otherwise, is modeled exactly, in the original primal space of the problem, by an easily solvable simple convex quadratic program for both linear ...
Mangasarian, Olvi, Musicant, David
core