Results 1 to 10 of about 869,155 (278)

dbscan: Fast Density-Based Clustering with R

Journal of Statistical Software, 2019
This article describes the implementation and use of the R package dbscan, which provides complete and fast implementations of the popular density-based clustering algorithm DBSCAN and the augmented ordering algorithm OPTICS. Package dbscan uses advanced
Michael Hahsler, Matthew Piekenbrock, Derek Doran   +2 more
doaj   +1 more source

Optics-less smart sensors and a possible mechanism of cutaneous vision in nature

, 2008
Optics-less cutaneous (skin) vision is not rare among living organisms, though its mechanisms and capabilities have not been thoroughly investigated.
A. B. Sichert, A. H. G. R. Kan, D.-E. Nilsson, D.-E. Nilsson, E. Sampaio, G. Békésy Von, G. J. Molenaar, H. L. Van-Trees, H. P. Zavala, I. R. Schwab, J. Pettigrew, L. Yaroslavsky, L. Yaroslavsky, M. Gardner, M. M. Bongard, P. Bach-y-Rita, R. Parker, W. J. Gehring   +17 more
core   +1 more source

Transcriptional network analysis of PTEN‐protein‐deficient prostate tumors reveals robust stromal reprogramming and signs of senescent paracrine communication

Molecular Oncology, EarlyView.
Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice, Jose I. Lopez, Aitziber Ugalde‐Olano, Maite Zufiaurre, Ianire Astobiza, Natalia Martin‐Martin, Laura Bozal‐Basterra, Saioa Garcia‐Longarte, Amaia Zabala‐Letona, Sofia Rey, Aida Santos‐Martin, Miguel Unda, Ana Loizaga‐Iriarte, Mariona Graupera, Paolo Nuciforo, Arkaitz Carracedo, Isabel Mendizabal   +16 more
wiley   +1 more source

Development of Piezoelectrically Driven Quasi-Static 2D MEMS Mirrors with Extremely Large FoV for Scanning LiDARs

Proceedings
In this paper, a piezoelectrically driven quasi-static MEMS mirror is developed for a scanning LiDAR system. Finite element method (FEM) simulations are used to optimize the design of the MEMS scanner.
Paul Raschdorf, Jeong-Yeon Hwang, Lena Wysocki, Lianzhi Wen, Jörg Albers, Gunnar Wille, Erdem Yarar, Shanshan Gu-Stoppel   +7 more
doaj   +1 more source

James Short and John Harrison: personal genius and public knowledge

Science Museum Group Journal, 2014
The instrument maker James Short, whose output was exclusively reflecting telescopes, was a sustained and consistent supporter of the clock and watch maker John Harrison.
Professor Jim Bennett
doaj   +1 more source

Linearizing nonlinear optics

, 2016
In the framework of linear optics, light fields do not interact with each other in a medium. Yet, when their field amplitude becomes comparable to the electron binding energies of matter, the nonlinear motion of these electrons emits new dipole radiation
Clerici, Matteo, Ernotte, Guilmot, Ibrahim, Heide, Lassonde, Philippe, Legare, Francois, Morandotti, Roberto, Schmidt, Bruno E.   +6 more
core   +1 more source

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

Molecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix, Daniel Samaga, Katharina Gehr, Benedek Dankó, Mohamed Schumann, Guido Drexler, Ahmed Alnatsha, Georg Beyer, Ujjwal Mahajan, Martin Selmansberger, Julia Mayerle, Claus Belka, Horst Zitzelsberger, Kirsten Lauber   +13 more
wiley   +1 more source

Pripravljenost slovenskih internetnih uporabnikov za priklop in plačilo za uporabo optičnega omrežja

Economic and Business Review, 2019
There is a lack of demand for next generation access (NGA) networks in both the EU and Slovenia. This paper examines the factors that influence the willingness to connect to and pay for the use of fibre optic networks, which are among the most ...
Matej Švigelj, Nevenka Hrovatin, Jelena Zorić   +2 more
doaj   +1 more source

Optical and mechanical design of the extreme AO coronagraphic instrument MagAO-X

, 2018
Here we review the current optical mechanical design of MagAO-X. The project is post-PDR and has finished the design phase. The design presented here is the baseline to which all the optics and mechanics have been fabricated.
Close, Laird M., Durney, Olivier, Gasho, Victor, Hedglen, Alex, Jean, Madison, Kautz, Maggie, Lumbres, Jennifer, Males, Jared R., Miller, Kelsey, Sauve, Corwynn, Schatz, Lauren, Van Gorkom, Kyle   +11 more
core   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source