User profiles for E. R. Hansen

Eric R. Hansen

Associate Professor, Loyola University Chicago
Verified email at luc.edu
Cited by 344

A generalized interval arithmetic

ER Hansen - Interval Mathematics: Proceedings of the International …, 1975 - Springer
We have introduced and illustrated a generalized interval analysis which reduces the inherent
lack of sharpness of oia to a second order effect. Our method may not be useful if second …

[PDF][PDF] On solving systems of equations using interval arithmetic

ER Hansen - Mathematics of Computation, 1968 - community.ams.org
Introduction. In this paper, we consider the problem of applying interval arithmetic to bound a
solution of a system of nonlinear equations. Moore [1, Section 7.3] has discussed the same …

Global optimization using interval analysis: the one-dimensional case

ER Hansen - Journal of Optimization Theory and Applications, 1979 - Springer
We show how interval analysis can be used to compute the minimum value of a twice
continuously differentiable function of one variable over a closed interval. When both the first and …

Industrial location choice in Sao Paulo, Brazil: a nested logit model

ER Hansen - Regional science and Urban economics, 1987 - Elsevier
… Second, one can er:pect no substantial spatial differences in depreciation costs although it
may be more difficult for firms in the hinterland area to find equipment maintenance specialists…

Bounding the solution of interval linear equations

ER Hansen - SIAM journal on numerical analysis, 1992 - SIAM
A method is given for computing bounds for the solution set of a system of linear equations
with interval coefficients.

An interval Newton method

ER Hansen, RI Greenberg - Applied Mathematics and Computation, 1983 - Elsevier
… 2 ER Hansen, On solving systems of equations using interval arithmetic, … 3 ER Hansen, On
linear algebraic equations with interval coefficients, in Topics in InkrvuZ Anulysis (E. Hansen, …

Classical observables from the exponential representation of the gravitational S-matrix

PH Damgaard, ER Hansen, L Planté… - Journal of High Energy …, 2023 - Springer
By combining the KMOC-formalism with the exponential representation of the scattering matrix
we show that the two-body scattering angle is given by the corresponding matrix element …

The relation between KMOC and worldline formalisms for classical gravity

PH Damgaard, ER Hansen, L Planté… - Journal of High Energy …, 2023 - Springer
We demonstrate the equivalence between observables in the KMOC and worldline formalisms
for classical general relativity, highlighting the relation between the initial conditions in …

Copy and paste lawmaking: Legislative professionalism and policy reinvention in the states

JM Jansa, ER Hansen, VH Gray - American Politics …, 2019 - journals.sagepub.com
… The results of a Doornik-Hansen test of multivariate normality showed that our data violated
the distributional assumptions of the Heckman model. We replicated the results from Table 2 …

Telomerase activity is increased and telomere length shortened in T cells from blood of patients with atopic dermatitis and psoriasis

K Wu, N Higashi, ER Hansen, M Lund… - The Journal of …, 2000 - journals.aai.org
We studied telomerase activity and telomere length in PBMC and purified CD4+ and CD8+
T cells from blood obtained from a total of 32 patients with atopic dermatitis, 16 patients with …