Community Profile

# Roche de Guzman

### Hofstra University

201 total contributions since 2015

Assistant Professor, Biomedical Engineering
Teaching:
ENGG 010 (Computer Programming for Engineers)
ENGG 081 (Introduction to Bioengineering)
ENGG 101 (Numerical Methods)
ENGG 108 (Biomaterials Lab)
ENGG 112 (Engineering Drawing)
ENGG 118 (Fundamentals of Biomaterials)
ENGG 143G (Senior Design)
ENGG 165 (Bioengineering Modeling and Simulation)
ENGG 169 (Fluid Mechanics Lab)
Research:
Biomaterials, Medical Device, Drug Delivery, Mathematical Modeling

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Solved

Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

2 mesi ago

Submitted

Finite Difference Explicit Method for Fick's 2nd Law
Finite Difference Explicit Method (iteration) to solve for a PDE (Fick's 2nd Law of diffusion)

10 mesi ago | 14 downloads |

Submitted

Finite Difference Implicit Method for Fick's 2nd Law
PDE solution using the implicit method

10 mesi ago | 4 downloads |

Submitted

FEM to solve for 2D Laplace's Equation
FEM solution to a steady-state PDE (example: Laplace's) applied to an electric potential

10 mesi ago | 6 downloads |

Submitted

Vector field rotation using Rotation (Transformation) matrix
Animation to demonstrate the use of the 2D rotation matrix in a vector field

10 mesi ago | 3 downloads |

Submitted

Truss 3D (Tetrahedral) using FEM (direct stiffness)
Deformation of a tetrahedral truss (4 nodes and 6 elements) with 3 pinned bottom nodes and downward force applied to the top nod...

10 mesi ago | 3 downloads |

Submitted

Fick's 2nd Law of Diffusion using Method of Lines
PDE solution using Method of Lines

10 mesi ago | 8 downloads |

Submitted

Fick's 2nd Law of Diffusion using FEM (Direct Stiffness)
Direct stiffness finite element method to solve for c (concentration) at given x (1D space) and t (time) values

10 mesi ago | 3 downloads |

Submitted

Graph of a 3D vector field and its divergence and curl
Visualize vector field quiver, divergence (slice), and curl (quiver) at given 3D coordinates

12 mesi ago | 5 downloads |

Submitted

Graph of a 2D vector field equation and its divergence
Visualize vector field using quiver and divergence using filled contour at given 2D coordinates

12 mesi ago | 2 downloads |

Submitted

Divergence Theorem (Gauss’, Ostrogradsky’s) to Measure Flow
Example showing that the volume integral of the divergence of f = surface integral of the magnitude of f normal to the surface (...

12 mesi ago | 3 downloads |

Solved

Summing Digits within Text
Given a string with text and digits, add all the numbers together. Examples: Input str = '4 and 20 blackbirds baked in a...

circa un anno ago

Solved

Indexed Probability Table
This question was inspired by a Stack Overflow question forwarded to me by Matt Simoneau. Given a vector x, make an indexed pro...

circa un anno ago

Solved

Solitaire Cipher
Implement the <http://en.wikipedia.org/wiki/Solitaire_(cipher) solitaire cipher>. Since this is from Wikipedia, I am capturin...

circa un anno ago

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Find the biggest empty box
You are given a matrix that contains only ones and zeros. Think of the ones as columns in an otherwise empty floor plan. You wan...

circa un anno ago

Solved

Compute a dot product of two vectors x and y
x and y are input vectors, d is a number and contains their dot product

circa un anno ago

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Back to basics 6 - Column Vector
Covering some basic topics I haven't seen elsewhere on Cody. Given an input vector, output true or false whether it is a colu...

circa un anno ago

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Make a run-length companion vector
Given a vector x, return a vector r that indicates the run length of any value in x. Each element in r shows how many times the ...

circa un anno ago

Solved

Find a subset that divides the vector into equal halves
Given a vector x, return the indices to elements that will sum to exactly half of the sum of all elements. Example: Inpu...

circa un anno ago

Solved

How many trades represent all the profit?
Given a list of results from trades made: [1 3 -4 2 -1 2 3] We can add them up to see this series of trades made a profit ...

circa un anno ago

Solved

How long is the longest prime diagonal?
Stanislaw Ulam once observed that if the counting numbers are <http://en.wikipedia.org/wiki/Ulam_spiral arranged in a spiral>, t...

circa un anno ago

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Flag largest magnitude swings as they occur
You have a phenomenon that produces strictly positive or negative results. delta = [1 -3 4 2 -1 6 -2 -7]; Marching thr...

circa un anno ago

Solved

Given a window, how many subsets of a vector sum positive
Given a vector: [1 0 -1 3 2 -3 1] and a window of 2, A sliding window would find: 1 + 0 = 1 0 - 1 = -1 ...

circa un anno ago

Solved

Implement simple rotation cypher
If given a letter from the set: [abc...xyz] and a shift, implement a shift cypher. Example: 'abc' with a shi...

circa un anno ago

Solved

Find the 9's Complement
Find the 9's complement of the given number. An example of how this works is <http://electrical4u.com/9s-complement-and-10s-c...

circa un anno ago

Solved

Compute Fibonacci Number
Compute the _n_-th Fibonacci Number f(0) = 0, f(1) = 1, f(2) = 1, f(3) = 2, ... f(42) = 267914296

circa un anno ago

Solved

Project Euler: Problem 10, Sum of Primes
The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below the input, N. Thank you <http:/...

circa un anno ago

Solved

Project Euler: Problem 9, Pythagorean numbers
A Pythagorean triplet is a set of three natural numbers, a b c, for which, a^2 + b^2 = c^2 For example, 3^2 + 4^2 =...

circa un anno ago

Solved

Project Euler: Problem 8, Find largest product in a large string of numbers
Find the greatest product of five consecutive digits in an n-digit number. 73167176531330624919225119674426574742355349194934...

circa un anno ago

Solved

Project Euler: Problem 7, Nth prime
By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the Nth prime nu...

circa un anno ago

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