Results 101 to 110 of about 287,878 (297)

Influence of drill-string lateral collision on wellbore stability of a horizontal well

Advances in Mechanical Engineering, 2022
A finite element model of wellbore stability was proposed for a horizontal well, and drill-string friction and lateral collision in the process of rotary motion were taken into account.
Tianshou Ma, Jin Huang, Zhilin Li, Yufan Shi, Lichun Jia, Chengxu Zhong   +5 more
doaj   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

Adaptive Cruise Control Utilizing Noisy Multi-Leader Measurements: A Learning-Based Approach

IEEE Open Journal of Intelligent Transportation Systems
A substantial number of vehicles nowadays are equipped with adaptive cruise control (ACC), which adjusts the vehicle speed automatically. However, experiments have found that commercial ACC systems which only detect the direct leader amplify the ...
Ying-Chuan Ni, Victor L. Knoop, Julian F. P. Kooij, Bart van Arem   +3 more
doaj   +1 more source

Rolling of Modulated Tachyon with Gauge Flux and Emergent Fundamental String

, 2003
We investigate real-time tachyon dynamics of unstable D-brane carrying fundamental string charge. We construct the boundary state relevant for rolling of modulated tachyon with gauge fields excited on the world-volume, and study spatial distribution of ...
A. Ishida, A. Ishida, A. Sen, A. Sen, A. Sen, A. Sen, B. Chen, C.G. Callan, C.J. Kim, F. Larsen, G. Felder, G.W. Gibbons, G.W. Gibbons, H. Kawai, J. Polchinski, J.A. Minahan, K. Hashimoto, K. Ohta, O. Bergman, P. Mukhopadhyay, P. Yi, S. Mukohyama, S. Sugimoto, S.-J. Rey, Shigeki Sugimoto, Soo-Jong Rey, T. Mehen, T. Okuda   +27 more
core   +1 more source

Light‐Induced Entropy for Secure Vision

Advanced Materials, EarlyView.
This work realized a ternary true random number generator by exploiting stochastic traps emerging within multiple junction interfaces, and quantitatively validated the generation of high‐quality random numbers. Furthermore, it successfully demonstrated diverse applications, including AI‐resilient image security, thereby providing a valuable guide for ...
Juhyung Seo, Seungme Kang, Chaehyun Kim, Taehyun Park, Youngwoo Yoo, Yeong Kwon Kim, Wonjun Shin, Byung Chul Jang, Young‐Joon Kim, Hocheon Yoo   +9 more
wiley   +1 more source

String Junctions and BPS States in Seiberg-Witten Theory [PDF]

, 1998
We argue that certain BPS states in the D3-brane probe realization of N=2 SU(2) Super-Yang-Mills theory correspond to multi-pronged strings connecting the D3-brane to the background 7-branes.
Aharony, Ansar Fayyazuddin, Bachas, Banks, Bergman, Brandhuber, Danielsson, Dasgupta, Fayyazuddin, Fayyazuddin, Ferrari, Ferrari, Ferrari, Fraser, Green, Greene, Hanany, Klemm, Minahan, Oren Bergman, Osborn, Porrati, Rabin, Segal, Seiberg, Seiberg, Sen, Sen, Sen, Tseytlin, Witten, Witten   +31 more
core   +2 more sources

Stable Protein‐Based G‐Quadruplex‐Derived Supramolecular Bioinks as Tunable ECM‐Mimetic Constructs Assembled by Combining Non‐Covalent and Covalent Strategies

Advanced Materials, EarlyView.
Harnessing the synergistic interplay of supramolecular self‐assembly, under macromolecular crowding conditions, and enzymatic‐mediated covalent crosslinking toward a stable protein‐based G‐quadruplex‐derived supramolecular bioink. This bioinspired strategy enables the biofabrication of complex and tunable ECM‐mimetic constructs, providing a platform ...
Vera Sousa, Rita Sobreiro‐Almeida, Bart W. L. van den Bersselaar, E. W. Meijer, Ghislaine Vantomme, João Borges, João F. Mano   +6 more
wiley   +1 more source

Quantum tunneling of superconducting string currents

, 2002
We investigate the decay of current on a superconducting cosmic string through quantum tunneling. We construct the instanton describing tunneling in a simple bosonic string model, and estimate the decay rate. The tunneling rate vanishes in the limit of a
Alexander Vilenkin, B. Carter, C. Callan, C.J.A.P. Martins, C.T. Hill, D. Haws, E. Witten, J.-M. Duan, Jose J. Blanco-Pillado, Ken D. Olum, R. Brandenberger, R.L. Davis, R.L. Davis, S. Zhang, X. Martin   +14 more
core   +2 more sources

Superionic Amorphous Li2ZrCl6 and Li2HfCl6

Advanced Materials, EarlyView.
Amorphous Li2HfCl6 and L2ZrCl6 are shown to be promising solid‐state electrolytes with predicted ionic conductivities >20 mS·cm−1. Molecular dynamics simulations with machine‐learning force fields reveal that anion vibrations and flexible MCl6 octahedra soften the Li coordination cage and enhance mobility. Correlation between Li‐ion diffusivity and the
Shukai Yao, De‐en Jiang
wiley   +1 more source

Distributed Cooperative Synchronization and Tracking for Heterogeneous Platoons With Mixed-Order Nonlinear Vehicle Dynamics

IEEE Access
This paper studies the synchronization and tracking issue for the connected and automated vehicle (CAV) platoon with mixed-order nonlinear vehicle dynamics.
Hui Dong, Yiguang Wang, Xiaojie Li
doaj   +1 more source