Results 1 to 10 of about 336,751 (309)

Cooperative effects enhance the transport properties of molecular spider teams [PDF]

Phys. Rev. E 87, 032706 (2013), 2013
Molecular spiders are synthetic molecular motors based on DNA nanotechnology. While natural molecular motors have evolved towards very high efficiency, it remains a major challenge to develop efficient designs for man-made molecular motors. Inspired by biological motor proteins like kinesin and myosin, molecular spiders comprise a body and several legs.
Frey, Erwin, Rank, Matthias, Reese, Louis   +2 more
arxiv   +5 more sources

Giant Surface Plasmon Induced Drag Effect (SPIDEr) in Metal Nanowires [PDF]

, 2009
Here, for the first time we predict a giant surface plasmon-induced drag effect (SPIDEr), which exists under conditions of the extreme nanoplasmonic confinement. Under realistic conditions, in nanowires, this giant SPIDEr generates rectified THz potential differences up to 10 V and extremely strong electric fields up to 10^5-10^6 V/cm. The SPIDEr is an
Durach, Maxim, Rusina, Anastasia, Stockman, Mark I.   +2 more
arxiv   +3 more sources

Molecular Spiders with Memory [PDF]

Physical Review E 76, 021121 (2007), 2007
Synthetic bio-molecular spiders with "legs" made of single-stranded segments of DNA can move on a surface which is also covered by single-stranded segments of DNA complementary to the leg DNA. In experimental realizations, when a leg detaches from a segment of the surface for the first time it alters that segment, and legs subsequently bound to these ...
G. H. Weiss, I. Benjamini, J. Howard, M. P. W. Zerner, N. G. Van Kampen, P. L. Krapivsky, S. Klumpp, S. Redner, Tibor Antal   +8 more
arxiv   +3 more sources

Exercising Control When Confronted by a (Brownian) Spider [PDF]

arXiv, 2016
We consider the Brownian "spider," a construct introduced in \cite{Dubins} and in \cite{Pitman}. In this note, the author proves the "spider" bounds by using the dynamic programming strategy of guessing the optimal reward function and subsequently establishing its optimality by proving its excessiveness.
Ernst, Philip
arxiv   +6 more sources

A Social Spider Algorithm for Global Optimization [PDF]

arXiv, 2015
The growing complexity of real-world problems has motivated computer scientists to search for efficient problem-solving methods. Metaheuristics based on evolutionary computation and swarm intelligence are outstanding examples of nature-inspired solution techniques.
J. Yu, V. Li
arxiv   +3 more sources

LANDSLIDE DETECTION IN CENTRAL AMERICA USING THE DIFFERENTIAL BARE SOIL INDEX [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
The increasing availability of EO data from the Copernicus program through its Sentinel satellites of the medium spatial and spectral resolution has generated new applications for risk management and disaster management.
A. Ariza, N. A. Davila, H. Kemper, G. Kemper   +3 more
doaj   +1 more source

A Constraint on Primordial B-modes from the First Flight of the Spider Balloon-borne Telescope [PDF]

Astrophysical Journal, 2021
We present the first linear polarization measurements from the 2015 long-duration balloon flight of Spider, which is an experiment that is designed to map the polarization of the cosmic microwave background (CMB) on degree angular scales.
S. C. P. A. R. Ade, M. Amiri, S. Benton, A. Bergman, R. Bihary, J. Bock, J. Bond, J. A. Bonetti, S. Bryan, H. Chiang, C. Contaldi, O. Dor'e, A. Duivenvoorden, H. Eriksen, M. Farhang, J. Filippini, A. Fraisse, K. Freese, M. Galloway, A. Gambrel, N. Gandilo, K. Ganga, R. Gualtieri, J. Gudmundsson, M. Halpern, J. Hartley, M. Hasselfield, G. Hilton, W. Holmes, V. Hristov, Z. Huang, K. Irwin, W. Jones, A. Karakci, C. Kuo, Z. Kermish, J. S. Leung, S. Li, D. Mak, P. Mason, K. Megerian, L. Moncelsi, T. Morford, J. Nagy, C. Netterfield, M. Nolta, R. O’Brient, B. Osherson, I. Padilla, B. Racine, A. Rahlin, C. Reintsema, J. Ruhl, M. Runyan, T. M. Ruud, J. Shariff, E. C. Shaw, C. Shiu, J. Soler, X. Song, A. Trangsrud, C. Tucker, R. Tucker, A. Turner, J. V. D. List, A. Weber, I. Wehus, S. Wen, D. Wiebe, E. Young   +69 more
semanticscholar   +1 more source

Spider Silk‐Inspired Artificial Fibers

Advancement of science, 2021
Spider silk is a natural polymeric fiber with high tensile strength, toughness, and has distinct thermal, optical, and biocompatible properties. The mechanical properties of spider silk are ascribed to its hierarchical structure, including primary and ...
Jiatian Li, Sitong Li, Jiayi Huang, Abdul Qadeer Khan, B. An, Xiang Zhou, Zunfeng Liu, Meifang Zhu   +7 more
semanticscholar   +1 more source

Spider: A Large-Scale Human-Labeled Dataset for Complex and Cross-Domain Semantic Parsing and Text-to-SQL Task [PDF]

Conference on Empirical Methods in Natural Language Processing, 2018
We present Spider, a large-scale complex and cross-domain semantic parsing and text-to-SQL dataset annotated by 11 college students. It consists of 10,181 questions and 5,693 unique complex SQL queries on 200 databases with multiple tables covering 138 ...
Tao Yu, Rui Zhang, Kai-Chou Yang, Michihiro Yasunaga, Dongxu Wang, Zifan Li, James Ma, Irene Z Li, Qingning Yao, Shanelle Roman, Zilin Zhang, Dragomir R. Radev   +11 more
semanticscholar   +1 more source

Multicomponent nature underlies the extraordinary mechanical properties of spider dragline silk

Proceedings of the National Academy of Sciences of the United States of America, 2021
Significance Artificial synthesis of spider silk has been actively pursued. However, until now, the natural mechanical properties of spider silk have been largely unreproducible.
N. Kono, Hiroyuki Nakamura, Masaru Mori, Yuki Yoshida, Rintaro Ohtoshi, A. Malay, Daniel A Pedrazzoli Moran, M. Tomita, K. Numata, K. Arakawa   +9 more
semanticscholar   +1 more source