Triboelectric Nanogenerators for the Masses: A Low-Cost Do-It-Yourself Pulsed Ion Source for Sample-Limited Applications
- Award ID(s):
- 2138107
- PAR ID:
- 10500879
- Publisher / Repository:
- American Chemical Society
- Date Published:
- Journal Name:
- Journal of the American Society for Mass Spectrometry
- Volume:
- 35
- Issue:
- 5
- ISSN:
- 1044-0305
- Format(s):
- Medium: X Size: p. 943-950
- Size(s):
- p. 943-950
- Sponsoring Org:
- National Science Foundation
More Like this
-
Beyersdorff, Olaf; Kanté, Mamadou Moustapha; Kupferman, Orna; Lokshtanov, Daniel (Ed.)Given a set P of n points and a set S of n segments in the plane, we consider the problem of computing for each segment of S its closest point in P. The previously best algorithm solves the problem in n^{4/3}2^{O(log^*n)} time [Bespamyatnikh, 2003] and a lower bound (under a somewhat restricted model) Ω(n^{4/3}) has also been proved. In this paper, we present an O(n^{4/3}) time algorithm and thus solve the problem optimally (under the restricted model). In addition, we also present data structures for solving the online version of the problem, i.e., given a query segment (or a line as a special case), find its closest point in P. Our new results improve the previous work.more » « less
An official website of the United States government
