نتایج جستجو برای: topographical maps

تعداد نتایج: 111277  

2009
Laura Keyes

Automated feature extraction and object recognition are large research areas in the field of image processing and computer vision. Recognition is largely based on the matching of descriptions of shapes. Numerous shapes description techniques have been developed, such as scalar features (dimension, area, number of corners etc.), Fourier descriptors and moment invariants. These techniques numeric...

Journal: :Cell 2012
Melissa M. Dix Gabriel M. Simon Chu Wang Eric Okerberg Matthew P. Patricelli Benjamin F. Cravatt

Caspase proteases are principal mediators of apoptosis, where they cleave hundreds of proteins. Phosphorylation also plays an important role in apoptosis, although the extent to which proteolytic and phosphorylation pathways crosstalk during programmed cell death remains poorly understood. Using a quantitative proteomic platform that integrates phosphorylation sites into the topographical maps ...

Journal: :Nanotechnology 2009
Justin Legleiter

In tapping mode atomic force microscopy (AFM), a sharp probe tip attached to an oscillating cantilever is allowed to intermittently strike a surface. By raster scanning the probe while monitoring the oscillation amplitude of the cantilever via a feedback loop, topographical maps of surfaces with nanoscale resolution can be acquired. While numerous studies have employed numerical simulations to ...

Journal: :Journal of refractive surgery 2004
Sandra Franco José B Almeida Manuel Parafita

PURPOSE Recently, the authors presented a technique that allows corneal thickness measurements along any meridian from optical sections obtained using a rotary scanning system. This paper presents three-dimensional mapping of the corneal thickness and topography of both corneal surfaces, obtained with the rotary system. METHOD Corneal thickness and topography are computed from optical section...

2018
Magnus Palmblad Nees Jan van Eck

We have explored the collaborative network of the current American Society for Mass Spectrometry (ASMS) membership using bibliometric methods. The analysis shows that 4249 members are connected in a single, large, co-authorship graph, including the majority of the most published authors in the field of mass spectrometry. The map reveals topographical differences between university groups and na...

2001
M. L. M. Balistreri J. P. Korterik N. F. van Hulst

The phase evolution of optical waves in a waveguide structure has been studied with a heterodyne interferometric photon scanning tunneling microscope. Both phase and amplitude of the local optical field are measured with subwavelength resolution. Topographical maps of the waveguide surface are obtained simultaneously with the optical information. Unexpected phase patterns, with phase jumps and ...

2008
Penny M. VandenBerg Jeffrey A. Kleim

The time course of peri-infarct diaschisis following a focal ischemic infarct and the effects of delayed rehabilitation on behavioral and functional recovery were examined. Intracortical microstimulation (ICMS) was used to derive topographical maps of forelimb representations within the rat motor cortex and ischemia was induced via bipolar coagulation of surface vasculature. At one hour there w...

Journal: :Journal of neurology, neurosurgery, and psychiatry 2003
K Hirayama Y Taguchi M Sato T Tsukamoto

A case of paraneoplastic limbic encephalitis presenting with topographical disorientation is reported. A 70 year old woman became unable to identify familiar buildings and landscapes and could not recall the way to destinations she had known very well for years. She also showed attentional disturbance and severe anterograde amnesia. Her retrograde amnesia extended for one year at most. No other...

2008
Markus Ueberall Oswald Drobnik Lutz Maicher Lars Marius Garshol

In this contribution, we address exploratory search where a user is faced with an information need concerning a domain he lacks specific knowledge. Based on the work of Delbru et al., which introduced metrics to measure the navigational quality of automatically selected facets for RDF data, we apply those findings to the semantically richer TMDM and show how exploratory search functionality can...

Journal: :Neurocase 2007
Itaru Tamura Mayumi Kitagawa Mika Otsuki Seiji Kikuchi Kunio Tashiro Bruno Dubois

A 72-year-old man with pure topographical disorientation following a focal hemorrhage in the right forceps major of splenium was assessed at 2 weeks and 3 months after the onset. Initially, he could identify familiar buildings and landmarks, but noted topographical disorientation, dysfunction in sense of quarters, and in visuo-spatial function. The improvement of topographical disorientation wa...

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