# Joseph Hollmann

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I am a PhD student in Electrical Engineering at Northeastern University. My current research is focused on optical imaging for biomedical applications but I have also worked in downhole imaging.

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**Feeds**

Solved

Count number of words in string

Count number of words in string E.g. 'hi', answer is 1 'hi hi', answer is 2 'I enjoy cody', answer is 3

10 years ago

Solved

Finding Perfect Squares

Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

10 years ago

Solved

Sum all integers from 1 to 2^n

Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

10 years ago

Solved

Determine whether a vector is monotonically increasing

Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

10 years ago

Solved

Pizza!

Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

10 years ago

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

10 years ago

Solved

Distance walked 1D

Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

10 years ago

Solved

The Hitchhiker's Guide to MATLAB

Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

10 years ago

Solved

vector to string

Determine what the ASCII characters spell out. Example: input = [ 72 73 71 72] output = 'HIGH'

10 years ago

Solved

How to find the position of an element in a vector without using the find function

Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...

10 years ago

Solved

Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

10 years ago

Solved

Double colon operator: Counting down

* Construct a row array countValues from startValue to endValue, elements decremented by -2 end Ex: If startValue is 10 and ...

10 years ago

Submitted

Convert an image to song

This function reads an image file and creates a tone vector

11 years ago | 2 downloads |

Submitted

copyfile

Copies all the files in a directory and all of its subdirectories

12 years ago | 2 downloads |

Submitted

LASimport

Function reads LAS files and returns recorded depth and measured data.

12 years ago | 2 downloads |

Submitted

Viewer for LWD images

Function displays LWD images. It allows the user to scroll through the image, and zoom in and out.

12 years ago | 2 downloads |