Community Profile # Jan Valdman

Last seen: Today 2010 이후 활성

Associate professor of applied mathematics

Professional Interests: FEM, nonlinear computational mechanics, a posteriori error estimates, MATLAB vectorizations

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Semismooth* Newton method for contact friction problems
Finite element solution of a contact problem with a Tresca friction by the semismooth* Newton method.

7달 전 | 다운로드 수: 6 | 제출됨

Equilibria of economical models with cost of change
Evaluations of Cournot-Nash and Stackelber-Cournot-Nash equilibria for models with several firms using Gauss method

7달 전 | 다운로드 수: 6 | 해결됨

Get all prime factors
List the prime factors for the input number, in decreasing order. List each factor. If the prime factor occurs twice, list it as...

12달 전

질문

A fast cell array generation
Dear all, in our optimization procedure, we need to create a cell array 'v_indices' from a vector 'v' and another cell array of...

약 1년 전 | 답변 수: 1 | 0

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

약 1년 전

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Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

약 1년 전

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Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

약 1년 전

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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...

약 1년 전

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Generate a vector like 1,2,2,3,3,3,4,4,4,4
Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...

약 1년 전

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Return area of square
Side of square=input=a Area=output=b

약 1년 전

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Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

약 1년 전

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Given a and b, return the sum a+b in c.

약 1년 전

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Side of a rhombus
If a rhombus has diagonals of length x and x+1, then what is the length of its side, y? <<https://imgur.com/x6hT6mm.png>> ...

약 1년 전

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

약 1년 전

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Binary numbers
Given a positive, scalar integer n, create a (2^n)-by-n double-precision matrix containing the binary numbers from 0 through 2^n...

약 1년 전

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; ...

약 1년 전

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Length of a short side
Calculate the length of the short side, a, of a right-angled triangle with hypotenuse of length c, and other short side of lengt...

약 1년 전

제출됨

Enlarge figure axis by a given factor
Given a 2D figure with (eg. tight) axis, this simple code automatically recalculates axis and enlarges them by a prescribed fact...

약 1년 전 | 다운로드 수: 3 | 해결됨

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...

2년 이하 전

답변 있음
Minimization of a function with unknown gradient but known sparsity pattern of its hessian
Dear colleague, based on our discussions from yesterday, I implemented a finite difference scheme for a gradient approximation ...

약 2년 전 | 0

질문

Minimization of a function with unknown gradient but known sparsity pattern of its hessian
Dear colleagues, is there a fmincon option to minimize a function without the knowledge of its gradient but providing a sparsit...

약 2년 전 | 답변 수: 2 | 1

### 2

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Simulation of von Kármán viscoelastic plates
A quasistatic evolution of viscoelastic von Kármán plates.

약 2년 전 | 다운로드 수: 5 | 해결됨

Pascal's Triangle
Given an integer n >= 0, generate the length n+1 row vector representing the n-th row of <http://en.wikipedia.org/wiki/Pascals_t...

약 2년 전

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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 ...

약 2년 전

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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

약 2년 전

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Count ones
Write a program to count number of ones (1s) in an integer variable input. For example: Input x=2200112231 output y=3 I...

약 2년 전

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Complex number
For complex number c=a+bi, write code that will add a and b together.

약 2년 전

제출됨

Implementation of C1 FEM
Detailed implementation of Bogner-Fox-Schmit elements.

2년 이상 전 | 다운로드 수: 10 | 제출됨

Hyper elasticity with a non-penetration condition
A 2D FEM solver based on an energy minimisation formulated in C^1 deformation including a new non-penetration term.

2년 이상 전 | 다운로드 수: 7 | 제출됨

Element-based Solvers
2D Poisson's solver using only local FEM matrices without the global matrix assembly.

3년 이하 전 | 다운로드 수: 2 | 