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Edgar Guevara

CONACYT-UASLP, CIACYT

Last seen: Today Active since 2012

Edgar Guevara is currently a CONACYT research fellow at CIACYT-UASLP. His research areas are optical imaging, functional connectivity, spectroscopy and biomedical signal processing. His current research interests are in non-invasive medical diagnosis. His past work includes research in epilepsy, cardiovascular disease, spinal cord injury and white matter injury in newborns. He received his PhD degree in Biomedical Engineering at École Polytechnique de Montréal in 2014, with a special mention of the jury.

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Remove the polynomials that have positive real elements of their roots.
The characteristic equation for a dynamic system is a polynomial whose roots indicate its behavior. If any of the roots of the p...

9 Tage ago

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Given a list of US states, remove all the states that start with the letter N. If s1 = 'Alabama Montana Nebraska Vermont Ne...

9 Tage ago

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Get the area codes from a list of phone numbers
Given a string of text with phone numbers in it, return a unique'd cell array of strings that are the area codes. s = '508-647...

9 Tage ago

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false. Example...

9 Tage ago

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

9 Tage ago

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The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

9 Tage ago

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Test of Quiz
Answer the questions and write in vector. Only one answer is correct. The founder of fuzzy logic is 1a) D. Golberg 1b)...

29 Tage ago

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Hard limit function
Classify x data as if x>=0 then y=1 if x<0 then y=0 Example x = [ -2 -1 0 1 2] y = [ 0 0 1 1 1]

6 Monate ago

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Is X a Fibonacci Matrix?
In honor of Cleve's new blog and post: <http://blogs.mathworks.com/cleve/2012/06/03/fibonacci-matrices/> Is X a Fibonacci ...

6 Monate ago

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barrier_grid_animation
Barrier grid animation is an effect created by moving a striped transparent overlay across an interlaced image. This file create...

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Length of the hypotenuse
Given short sides of lengths a and b, calculate the length c of the hypotenuse of the right-angled triangle. <<https://i.imgu...

12 Monate ago

Finding the t values of the Student's t test (t1-α,ν)
The t-value is inside the STAT structure, consider the following example: X = rand([100, 1]); Y = rand([100, 1]); [H,P,CI,STA...

mehr als ein Jahr ago | 0

Plotting 2 lines in the same graph
Modify the last lines of your code: disp(['Time taken to reach ground (with NO drag) = ', num2str(t), ' seconds']) disp(['Tota...

mehr als ein Jahr ago | 0

plotting frequency distribution of fft2 transformed image...
I believe that the following example may be useful: % spatial frequency (SF) filtering clear; close all; clc; filename = 'ima...

mehr als ein Jahr ago | 0

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modularArithmetic
Modular arithmetic or modulo multiplication circle

Submitted

Implementation of the Vancouver Raman Algorithm
Implementation of the Vancouver Raman Algorithm

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Interpolator
You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

mehr als ein Jahr ago

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Kaprekar Steps
6174 is the <http://en.wikipedia.org/wiki/6174_%28number%29 Kaprekar constant>. All natural numbers less than 10,000 (except som...

mehr als ein Jahr ago

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The Goldbach Conjecture, Part 2
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

mehr als ein Jahr ago

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Find common elements in matrix rows
Given a matrix, find all elements that exist in every row. For example, given A = 1 2 3 5 9 2 5 9 3 2 5 9 ...

mehr als ein Jahr ago

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Find the two-word state names
Given a list of states, remove all the states that have two-word names. If s1 = 'Alabama Montana North Carolina Vermont N...

mehr als ein Jahr ago

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square number
Square a number

mehr als ein Jahr ago

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Who is the smartest MATLAB programmer?
Who is the smartest MATLAB programmer? Examples: Input x = 'Is it Obama?' Output = 'Me!' Input x = 'Who ?' Ou...

mehr als ein Jahr ago

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Find the peak 3n+1 sequence value
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

mehr als ein Jahr ago

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Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

mehr als ein Jahr ago

Submitted

erathostenes
The Sieve of Eratosthenes

Submitted

collatz
Checks for the Collatz conjecture for a given number

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Raman spectroscopy to screen diabetes mellitus
Raman spectroscopy is used non-invasively to screen diabetic patients, using ANN, PCA & SVM

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Make a Palindrome Number
Some numbers like 323 are palindromes. Other numbers like 124 are not. But look what happens when we add that number to a revers...

fast 3 Jahre ago

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Alphabetize by last name
Given a list of names in a cell array, sort the list by the last name. So if list = {'Barney Google','Snuffy Smith','Dagwood ...

fast 3 Jahre ago