Results 51 to 60 of about 262,918 (303)

Active Tracking of Moving Objects with Speed Variations Using a Novel PTZ Camera-based Machine Vision Technique

Elektronika ir Elektrotechnika
Most existing methods of active tracking focus mainly on slow-moving objects, resulting in limited adaptability to objects with variable speeds. To bridge this research gap, a novel spherical coordinate guided adaptive active tracking (SCAAT) approach ...
Feng Lu, Youchun Xu, Yuan Zhu, Zhichao Zhang, Yulin Ma, Kang Mao   +5 more
doaj   +1 more source

Study on Electrical Properties of Multilayered Spherical Earth by Wireless Electromagnetic Method

IEEE Access, 2021
The wireless electromagnetic method (WEM), a new method combining geophysics and radio physics, can be used for seismic monitoring, ionospheric structure exploration and electrical structure detection within a depth of 10m underground.
Ya Gao, Qingyun Di, Zhenjun Ma, Zhe Yun
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

An orthogonal curvilinear coordinate system for a world ocean model [PDF]

, 1993
A orthogonal, curvilinear grid system for World Ocean modelling is examined. It involves the coupling of two non-singular spherical sub-grids, avoiding the North Pole singularity of the standard, spherical coordinates.
Campin, J.M., Deleersnijder, E., van Ypersele, J.P.   +2 more
core  

Path Integral Approach for Spaces of Non-constant Curvature in Three Dimensions

, 2005
In this contribution I show that it is possible to construct three-dimensional spaces of non-constant curvature, i.e. three-dimensional Darboux-spaces. Two-dimensional Darboux spaces have been introduced by Kalnins et al., with a path integral approach ...
C. Grosche, C. Grosche, C. Grosche, C. Grosche, C. Grosche, C. Grosche, C. Grosche, E. G. Kalnins, E. G. Kalnins, H. Kleinert, H. Kleinert, I. S. Gradshteyn, L. S. Schulman, M. Abramowitz, M. Böhm, P. Winternitz, R. P. Feynman   +16 more
core   +1 more source

The anti‐CRISPR protein AcrIE8.1 inhibits the type I‐E CRISPR‐Cas system by directly binding to the Cascade subunit Cas11

FEBS Letters, EarlyView.
In this study, we present the structure of AcrIE8.1, a previously uncharacterized anti‐CRISPR protein that inhibits the type I‐E CRISPR‐Cas system. Through a combination of structural and biochemical analyses, we demonstrate that AcrIE8.1 directly binds to the Cas11 subunit of the Cascade complex to inhibit the CRISPR‐Cas system.
Young Woo Kang, Hyun Ho Park
wiley   +1 more source

Response of a spherical cavity in a fully-coupled thermo-poro-elastodynamic medium by cell-adaptive second-order central high resolution schemes

Underground Space, 2018
In this study, fully coupled thermo-poroelastic saturated media are simulated by a grid/cell adaptive central high resolution scheme. The central method corresponds to the second order Kurganov–Tadmor (KT) scheme working on adapted cells with the total ...
Hassan Yousefi, Alireza Taghavi Kani, Iradj Mahmoudzadeh Kani   +2 more
doaj   +1 more source

A novel image de-noising method based on spherical coordinates system [PDF]

EURASIP Journal on Advances in Signal Processing, 2012
Abstract In this article, a novel image de-noising method is proposed. This method is based on spherical coordinates system. First, spherical transform is re-defined in wavelet domain, and the properties of the spherical transform in wavelet domain are listed. Then, a new adaptive threshold in spherical coordinate system is presented.
Zhang, Degan, Kang, Xuejing, Wang, Jinghui   +2 more
openaire   +1 more source

Orthogonal Linear Combinations of Gaussian Type Orbitals

, 2009
The set of Gaussian Type Orbitals g(n1,n2,n3) of order (n+1)(n+2)/2, of common n=n1+n2 ...
?ivkovi?, ?�rsky, Abramowitz, Apelblat, Boys, Bradley, Browne, Bunge, Condon, Dupuis, Edmonds, Gradstein, Grotendorst, Harris, Helgaker, Kaijser, Klopper, Landau, Lindh, L�wdin, Mathar, Mitroy, Moshinsky, Reeves, Roberts, Roothaan, Safouhi, Sch�fer, Shavitt, Slater   +29 more
core   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source