Results 91 to 100 of about 73,753 (309)

A Low‐Cost, Handheld Optical Stiffness Sensor for Minimally Invasive Surgery

Advanced Robotics Research, EarlyView.
A novel handheld stiffness sensor is presented for real‐time tissue stiffness characterization. By simultaneously sensing contact force and tissue deformation, the device enables accurate stiffness quantification without requiring precise manual control. This approach offers a promising solution for intraoperative tumor detection and minimally invasive
Qianyu Ma, Ruxiang Jiang, Kaspar Althoefer, Nicolas Herzig, Hareesh Godaba   +4 more
wiley   +1 more source

On search, decision, and the efficiency of polynomial-time algorithms

Journal of Computer and System Sciences, 1989
Recent advances in well-quasi-order theory have troubling consequences for those who would equate tractability with polynomial-time complexity. In particular, there is no guarantee that polynomial-time algorithms can be found just because a problem has been shown to be decidable in polynomial time.
Michael R. Fellows, Michael A. Langston
openaire   +1 more source

Local quadratic convergence of polynomial-time interior-point methods for conic optimization problems [PDF]

In this paper, we establish a local quadratic convergence of polynomial-time interior-point methods for general conic optimization problems. The main structural property used in our analysis is the logarithmic homogeneity of self-concordant barrier ...
NESTEROV, Yu., TUNCEL, Levent
core  

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

Advanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang, Xinyuan Ke, Andrew Heath, Richard J. Ball, Jiawei Xie, Jinchen Fan, Guisheng Li, Kevin Paine   +7 more
wiley   +1 more source

Parameterized single-exponential time polynomial space algorithm for steiner tree [PDF]

, 2019
| openaire: EC/H2020/338077/EU//TAPEASE | openaire: EC/H2020/306992/EU//PARAPPROXIn the Steiner Tree problem, we are given as input a connected n-vertex graph with edge weights in \{ 1, 2, . . ., W\} , and a set of k terminal vertices.
Fomin, Fedor, Lokshtanov, Daniel, Panolan, Fahad, Kaski, Petteri, Saurabh, Saket   +4 more
core   +1 more source

Phase Diagrams and Piezoelectric Properties of Wurtzite Al1−x−yScxGdyN Heterostructural Alloys

Advanced Science, EarlyView.
This study demonstrates ferroelectricity and piezoelectric properties improvement of quaternary wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films, guided by density functional theory calculations. Wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films have a high optical bandgap, enhanced piezoelectric ...
Julia L. Martin, Cheng‐Wei Lee, Nate S.P. Bernstein, Thi Nguyen, Ande Bryan, Eli Cooper, John S. Mangum, Sage R. Bauers, Andriy Zakutayev, Keisuke Yazawa, Prashun Gorai, Rebecca W. Smaha   +11 more
wiley   +1 more source

The method of generation program code with indistinguishable functionality

Безопасность информационных технологий, 2017
The paper presents an obfuscation problem, in which indistinguishability is considered relatively to programs with distinguishable functionality. The functionality remains undisclosed owing to unknown parameters in the program’s input.
Mikhail Andreevich Styugin
doaj   +1 more source

A Polynomial-time Algorithm for the Bistable Roommates Problem

Journal of Computer and System Sciences, 2001
In a recent paper, \textit{B. P. Weems} [J. Comput. Syst. Sci. 59, No. 3, 504--520 (1999; Zbl 0946.90073)] introduced the bistable matching problem, and asked if a polynomial-time algorithm exists to decide the feasibility of the bistable roommates problem. We resolve this question in the affirmative using linear programming.
Jay Sethuraman, Chung-Piaw Teo
openaire   +1 more source

Semidefinite Programming by Perceptron Learning

, 2003
We present a modified version of the perceptron learning algorithm (PLA) which solves semidefinite programs (SDPs) in polynomial time. The algorithm is based on the following three observations: (i) Semidefinite programs are linear programs with ...
Thore Graepel, Ralf Herbrich, Andriy Kharechko, Kharechko, Andriy, Shawe-Taylor, John, John Shawe-taylor, Graepel, Thore, Herbrich, Ralf   +7 more
core  

Atomic Defects in Layered Transition Metal Dichalcogenides for Sustainable Energy Storage and the Intelligent Trends in Data Analytics

Advanced Science, EarlyView.
This review comprehensively summarizes the atomic defects in TMDs for their applications in sustainable energy storage devices, along with the latest progress in ML methodologies for high‐throughput TEM data analysis, offering insights on how ML‐empowered microscopy facilitates bridging structure–property correlation and inspires knowledge for precise ...
Zheng Luo, Ying Yang, Zizhen Fu, Fengqi Liu, Susu Fang, Kele Xu, Shanshan Wang   +6 more
wiley   +1 more source