In this paper we present several \infeasible-start" path-following and potential-reduction primal-dual interior-point methods for nonlinear conic problems. These methods try to nd a recession direction of the feasible set of a self-dual homogeneous primal-dual problem. The methods under consideration generate an-solution for an-perturbation of an initial strictly (primal and dual) feasible prob...

In this paper we present several \infeasible-start" path-following and potential-reduction primal-dual interior-point methods for nonlinear conic problems. These methods try to nd a recession direction of the feasible set of a self-dual homogeneous primal-dual problem. The methods under consideration generate an-solution for an-perturbation of an initial strictly (primal and dual) feasible prob...

Abstract We study convex relaxations of nonconvex quadratic programs. identify a family so-called feasibility preserving relaxations, which includes the well-known copositive and doubly nonnegative with property that relaxation is feasible if only program feasible. observe each in this implicitly induces underestimator objective function on region program. This alternative perspective enables u...

PURPOSE To suggest a surgical normogram for lateral rectus recession in exotropia associated with unilateral or bilateral superior oblique muscle palsy (SOP). METHODS We retrospectively reviewed the charts of 71 patients with exotropia who were successfully corrected over one year. Each patient had undergone unilateral or bilateral rectus recession associated with uni- or bilateral inferior o...

A straight-forward interpretation of standard Friedmann-Lemaitre-Robertson-Walker (FLRW) cosmologies is that objects move apart due to the expansion of space, and that sufficiently distant galaxies must be receding at velocities exceeding the speed of light. Recently, however, it has been suggested that a simple transformation into conformal coordinates can remove superluminal recession velocit...

The standard way to represent a choice between n alternatives in Mixed Integer Programming is through n binary variables that add up to one. Unfortunately, this approach commonly leads to unbalanced branch-and-bound trees and diminished solver performance. In this paper, we present an encoding formulation framework that encompasses and expands existing approaches to mitigate this behavior. Thro...

1. Introduction At the quarterly frequency, GDP is regarded as the most important single economic series representing the state of the economy. However, at monthly frequency, there is no single economic series which can cover the overall activities of the economy. The Conference Board's Composite Index of Coincident Indicators (CCI), a composite index of employment, income, output and sales, is...

Purpose: The current global recession is presenting new and difficult challenges for those customers wishing to consume sustainably and ethically, and the marketers who seek to provide the goods that allow them to do so. This viewpoint will explore to what extent international marketers can engage consumers with a social conscience and retain their loyalty both during and after the recession. D...

BACKGROUND: This survey was performed to determine the effect of unilateral lateral rectus recession in treatment of moderate angle intermittent exotropia. However, this type of operation and its long term results in patients with moderate angle exotropia have not yet been studied in Iran. METHODS: Forty patients with basic type intermittent exotropia with moderate angle deviation (25-30∆D) wer...

In the United States, there is an ongoing debate about the possible adoption of an explicit numerical inflation target for the Federal Reserve. An important facet of this debate regards what numerical value such a target should have. Bernanke et al. (1999, p. 28-30) discuss four reasons why an inflation targeting central bank should target a positive inflation rate: 1) CPI-based measures of inf...