Results 131 to 140 of about 509,144 (286)

Satisfiability Parsimoniously Reduces to the Tantrix(TM) Rotation Puzzle Problem

, 2008
Holzer and Holzer (Discrete Applied Mathematics 144(3):345--358, 2004) proved that the Tantrix(TM) rotation puzzle problem is NP-complete. They also showed that for infinite rotation puzzles, this problem becomes undecidable.
Baumeister, Dorothea, Rothe, Joerg
core   +1 more source

MATHEMATICAL MODELLING OF AN ELONGATED MAGNETIC DROPLET IN A ROTATING MAGNETIC FIELD

Mathematical Modelling and Analysis, 2012
Dynamics of an elongated droplet under the action of a rotating magnetic field is considered by mathematical modelling. The actual shape of a droplet is obtained by solving the initial-boundary value problem of a nonlinear singularly perturbed partial differential equation (PDE).
Cebers, Andrejs, Kalis, Harijs
openaire   +5 more sources

Inorganic Dielectric Materials Coupling Micro‐/Nanoarchitectures for State‐of‐the‐Art Biomechanical‐to‐Electrical Energy Conversion Devices

Advanced Materials, EarlyView.
Biomechanical‐to‐electrical energy conversion devices are uniquely suited for self‐driven physiological information monitoring and powering human–computer interaction systems. These devices based on micro‐/nanoarchitectured inorganic dielectric materials (MNIDMs) have shown ultrahigh electromechanical performance and thus great potential for practical ...
Jia‐Han Zhang, Zhengtong Li, Zeng Liu, Mingxuan Li, Jiaxin Guo, Jinhua Du, Changkun Cai, Shaohui Zhang, Ningning Sun, Yong Li, Xingtao Xu, Xihong Hao, Yusuke Yamauchi   +12 more
wiley   +1 more source

A Wick-rotatable metric is purely electric [PDF]

arXiv, 2015
We show that a metric of arbitrary dimension and signature which allows for a standard Wick-rotation to a Riemannian metric necessarily has a purely electric Riemann and Weyl tensor.
arxiv  

Mastering fractions and innovating with the station rotation model in blended learning

Infinity
This study explores the effectiveness of the Station Rotation Model (SRM) in adding and subtracting fractions. A mixed-method design was conducted through convenience sampling of 31 students from Year 9.
Nurul Harizah Abdul Latif, Masitah Shahrill, Wahyu Hidayat   +2 more
doaj   +1 more source

Bioxolography Using Diphenyliodonium Chloride and N‐Vinylpyrrolidone Enables Rapid High‐Resolution Volumetric 3D Printing of Spatially Encoded Living Matter

Advanced Materials, EarlyView.
Bioxolography, a novel volumetric 3D‐bioprinting technique, enables rapid and high‐resolution fabrication of >1 cm3 engineered living materials. A newly developed three‐component photoinitiator system significantly enhances the photoreactivity of gelatin methacryloyl‐based bioresins, allowing for precise xolographic bioprinting.
Alexis Wolfel, Castro Johnbosco, Annalise Anspach, Marieke Meteling, Jos Olijve, Niklas Felix König, Jeroen Leijten   +6 more
wiley   +1 more source

Rotations and Tangent Processes on Wiener Space [PDF]

In Seminaire de Probabilities XXXVIII, Lecture Notes in Mathematics, Vol. 1857, pages 205-225. Springer, Berlin Heidelberg New York (2004)., 2003
The paper considers (a) Representations of measure preserving transformations (``rotations'') on Wiener space, and (b) The stochastic calculus of variations induced by parameterized rotations $\{T_\theta w, 0 \le \theta \le \eps\}$: ``Directional derivatives'' $(dF(T_\theta w)/d \theta)_{\theta=0}$, ``vector fields'' or ``tangent processes'' $(dT_ ...
arxiv  

Intelligent Virtual Reality and its Impact on Spatial Skills and Academic Achievements [PDF]

Journal of Systemics, Cybernetics and Informatics, 2005
It is known that the training of intelligent virtual reality, through the use of computer games, can improve spatial skills especially visualization and enhances academic achievements.
Esther Zaretsky, Varda Bar
doaj  

MECHANICAL-MATHEMATICAL MODEL OF LITHOSPHERIC GEODYNAMICS CAUSED BY INERTIAL FORCES OF THE EARTH ROTATION AND REACTION FORCES OF ASTHENOSPHERIC LAYER, LOSS OF DEFORMATION STABILITY [PDF]

, 2019
Abay Abyshevich Baimukhametov, Kapal Koksalov   +1 more
openalex   +1 more source

Dual‐Scale Hydration‐Induced Electrical and Mechanical Torsional Energy Harvesting in Heterophilically Designed CNT Yarns

Advanced Materials, EarlyView.
Despite the abundance and vast energy potential of water, its efficient utilization is hindered by single‐mode energy conversion. Herein, heterophilic CNT yarns that allow for simultaneous energy harvesting by means of dual‐scale hydration—electrical energy harvesting through proton gradients and mechanical torsional harvesting through microchannel ...
Jae Myeong Lee, Wonkyeong Son, Myoungeun Oh, Duri Han, Hyunji Seo, Hyeon Jun Sim, Shi Hyeong Kim, Dong‐Myeong Shin, Chang‐Seok Kim, Seon Jeong Kim, Changsoon Choi   +10 more
wiley   +1 more source