The psychological four-color mapping problem

2009 ◽  
Author(s):  
Gregory Francis
Keyword(s):  
Color Mapping ◽  
Mapping Problem

scholarly journals Modified Harmony Search Algorithm for Solving the Four-Color Mapping Problem

2014 ◽  
Vol 91 (6) ◽  
pp. 34-38
Author(s):  
Bnar FaisalA.Daham ◽  
Mohammed N. Mohammed ◽  
Kanar Sh. Mohammed
Keyword(s):  
Search Algorithm ◽  
Harmony Search ◽  
Harmony Search Algorithm ◽  
Color Mapping ◽  
Mapping Problem

The psychological four-color mapping problem.

2010 ◽  
Vol 16 (2) ◽  
pp. 109-123 ◽  
Author(s):  
Gregory Francis ◽  
Keri Bias ◽  
Joshua Shive
Keyword(s):  
Color Mapping ◽  
Mapping Problem

scholarly journals Coronary Flow and Reserve by Enhanced Transthoracic Doppler Trumps Coronary Anatomy by Computed Tomography in Assessing Coronary Artery Stenosis

Diagnostics ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 245
Author(s):  
Carlo Caiati ◽  
Arnaldo Scardapane ◽  
Fortunato Iacovelli ◽  
Paolo Pollice ◽  
Teresa Immacolata Achille ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Coronary Angiography ◽  
Flow Velocity ◽  
Coronary Flow ◽  
Invasive Coronary Angiography ◽  
Coronary Anatomy ◽  
Color Mapping ◽  
Flow Reserve ◽  
Mild Stenosis ◽  
Iodinated Contrast

We report the case of a 71-year-old patient with many risk factors for coronary atherosclerosis, who underwent computed coronary angiography (CTA), in accordance with the guidelines, for recent onset atypical chest pain. CTA revealed critical (>50% lumen diameter narrowing) stenosis of the proximal anterior descending coronary, and the patient was scheduled for invasive coronary angiography (ICA). Before ICA he underwent enhanced transthoracic echo-Doppler (E-Doppler TTE) for coronary flow detection by color-guided pulsed-wave Doppler recording of the left main (LMCA) and whole left anterior descending coronary artery (LAD,) along with coronary flow reserve (CFR) in the distal LAD calculated as the ratio, of peak flow velocity during i.v. adenosine (140 mcg/Kg/m) to resting flow velocity. E-Doppler TTE mapping revealed only mild stenosis (28% area narrowing) of the mid LAD and a CFR of 3.20, in perfect agreement with the color mapping showing no flow limiting stenosis in the LMCA and LAD. ICA revealed only a very mild stenosis in the mid LAD and mild atherosclerosis in the other coronaries (intimal irregularities). Thus, coronary stenosis was better predicted by E-Doppler TTE than by CTA. Coronary flow and reserve as assessed by E-Doppler TTE trumps coronary anatomy as assessed by CTA, without exposing the patient to harmful radiation and iodinated contrast medium.

scholarly journals One-shot BRDF imaging system to obtain surface properties

2021 ◽  
Author(s):  
Hiroshi Ohno ◽  
Takahiro Kamikawa
Keyword(s):  
Surface Properties ◽  
Imaging System ◽  
Reconstruction Method ◽  
Surface Reflectance ◽  
Bidirectional Reflectance Distribution Function ◽  
Bidirectional Reflectance ◽  
Color Mapping ◽  
System A ◽  
Cone Surface ◽  
Bidirectional Reflectance Distribution

AbstractThe bidirectional reflectance distribution function (BRDF) that describes an angle-resolved distribution of surface reflectance is available for characterizing surface properties of a material. A one-shot BRDF imaging system can capture an in-plane color mapping of light direction extracted from a surface BRDF distribution. A surface roughness identification method is then proposed here using the imaging system. A difference between surface properties of a matt paper and a glossy paper is experimentally shown to be detected using the method. A surface reconstruction method of an axisymmetric micro-object using the imaging system is also proposed here. The imaging system experimentally shows that it can reconstruct an axisymmetric aluminium cone surface with a height of 37 μm.

Compositional and Performance Mapping in Computer Chamber Music: A Case Study

2014 ◽  
Vol 38 (3) ◽  
pp. 64-75 ◽  
Author(s):  
Eric Lyon ◽  
R. Benjamin Knapp ◽  
Gascia Ouzounian
Keyword(s):  
Chamber Music ◽  
Musical Instruments ◽  
Lessons Learned ◽  
Mapping Problem ◽  
Software Interfaces ◽  
Digital Synthesis ◽  
The Rich ◽  
Physical Gestures ◽  
And Performance ◽  
Musical Interaction

The mapping problem is inherent to digital musical instruments (DMIs), which require, at the very least, an association between physical gestures and digital synthesis algorithms to transform human bodily performance into sound. This article considers the DMI mapping problem in the context of the creation and performance of a heterogeneous computer chamber music piece, a trio for violin, biosensors, and computer. Our discussion situates the DMI mapping problem within the broader set of interdependent musical interaction issues that surfaced during the composition and rehearsal of the trio. Through descriptions of the development of the piece, development of the hardware and software interfaces, lessons learned through rehearsal, and self-reporting by the participants, the rich musical possibilities and technical challenges of the integration of digital musical instruments into computer chamber music are demonstrated.

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