323 research outputs found
As Long As I Live
Photograph of Ingrid Bergman and Gary Cooper on orange backgroundhttps://scholarsjunction.msstate.edu/cht-sheet-music/8623/thumbnail.jp
Honey-Babe
Two photos of the case of Battle Cry.https://scholarsjunction.msstate.edu/cht-sheet-music/3011/thumbnail.jp
String Indexing for Top- Close Consecutive Occurrences
The classic string indexing problem is to preprocess a string into a
compact data structure that supports efficient subsequent pattern matching
queries, that is, given a pattern string , report all occurrences of
within . In this paper, we study a basic and natural extension of string
indexing called the string indexing for top- close consecutive occurrences
problem (SITCCO). Here, a consecutive occurrence is a pair , ,
such that occurs at positions and in and there is no occurrence
of between and , and their distance is defined as . Given a
pattern and a parameter , the goal is to report the top- consecutive
occurrences of in of minimal distance. The challenge is to compactly
represent while supporting queries in time close to length of and .
We give two time-space trade-offs for the problem. Let be the length of
, the length of , and . Our first result achieves
space and optimal query time of , and our second result
achieves linear space and query time . Along the way, we
develop several techniques of independent interest, including a new translation
of the problem into a line segment intersection problem and a new recursive
clustering technique for trees.Comment: Fixed typos, minor change
Optimal topological simplification of discrete functions on surfaces
We solve the problem of minimizing the number of critical points among all
functions on a surface within a prescribed distance {\delta} from a given input
function. The result is achieved by establishing a connection between discrete
Morse theory and persistent homology. Our method completely removes homological
noise with persistence less than 2{\delta}, constructively proving the
tightness of a lower bound on the number of critical points given by the
stability theorem of persistent homology in dimension two for any input
function. We also show that an optimal solution can be computed in linear time
after persistence pairs have been computed.Comment: 27 pages, 8 figure
Addressable nanoantennas with cleared hotspots for single-molecule detection on a portable smartphone microscope
The advent of highly sensitive photodetectors and the development of photostabilization strategies made detecting the fluorescence of single molecules a routine task in many labs around the world. However, to this day, this process requires cost-intensive optical instruments due to the truly nanoscopic signal of a single emitter. Simplifying single-molecule detection would enable many exciting applications, e.g., in point-of-care diagnostic settings, where costly equipment would be prohibitive. Here, we introduce addressable NanoAntennas with Cleared HOtSpots (NACHOS) that are scaffolded by DNA origami nanostructures and can be specifically tailored for the incorporation of bioassays. Single emitters placed in NACHOS emit up to 461-fold (average of 89 ± 7-fold) brighter enabling their detection with a customary smartphone camera and an 8-US-dollar objective lens. To prove the applicability of our system, we built a portable, battery-powered smartphone microscope and successfully carried out an exemplary single-molecule detection assay for DNA specific to antibiotic-resistant Klebsiella pneumonia on the road
Addressable Nanoantennas with Cleared Hotspots for Single-Molecule Detection on a Portable Smartphone Microscope
The advent of highly sensitive photodetectors1,2 and the development of photostabilization strategies3 made detecting the fluorescence of a single molecule a routine task in many labs around the world. However, to this day, this process requires cost-intensive optical instruments due to the truly nanoscopic signal of a single emitter. Simplifying single-molecule detection would enable many exciting applications, e.g. in point-of-care diagnostic settings, where costly equipment would be prohibitive.4 Here, we introduce addressable NanoAntennas with Cleared HOtSpots (NACHOS) that are scaffolded by DNA origami nanostructures and can be specifically tailored for the incorporation of bioassays. Single emitters placed in the NACHOS emit up to 461-fold brighter enabling their detection with a customary smartphone camera and an 8-US-dollar objective lens. To prove the applicability of our system, we built a portable, battery-powered smartphone microscope and successfully carried out an exemplary single-molecule detection assay for DNA specific to antibiotic-resistant Klebsiella pneumonia "on the road “
Uniform convergence of discrete curvatures from nets of curvature lines
We study discrete curvatures computed from nets of curvature lines on a given
smooth surface, and prove their uniform convergence to smooth principal
curvatures. We provide explicit error bounds, with constants depending only on
properties of the smooth limit surface and the shape regularity of the discrete
net.Comment: 21 pages, 8 figure
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