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Jan Valdman


Last seen: 5일 전 2010 이후 활성

Associate professor of applied mathematics
https://sites.google.com/site/janvaldman/

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.

6달 전 | 다운로드 수: 4 |

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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

6달 전 | 다운로드 수: 3 |

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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...

10달 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...

12달 전 | 답변 수: 1 | 0

1

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해결됨


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

해결됨


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

해결됨


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

해결됨


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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Add two numbers
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

해결됨


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

해결됨


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

해결됨


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 |

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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...

1년 이상 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 ...

2년 이하 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...

2년 이하 전 | 답변 수: 2 | 1

2

답변

제출됨


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

약 2년 전 | 다운로드 수: 4 |

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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

해결됨


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

해결됨


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: 3 |

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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: 1 |

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제출됨


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

2년 이상 전 | 다운로드 수: 4 |

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