The Applicability of Nonlinear Systems Dynamics Chaos Measures to Cardiovascular Physiology Variables

Three measures of nonlinear chaos (fractal dimension, Approximate Entropy (ApEn), and Lyapunov exponents) were studied as potential measures of cardiovascular condition. It is suggested that these measures have potential in the assessment of cardiovascular condition in environments of normal cardiovascular stress (normal gravity on the Earth surface), cardiovascular deconditioning (microgravity of space), and increased cardiovascular stress (lower body negative pressure (LBNP) treatments)

Optimization bounds from the branching dual

We present a general method for obtaining strong bounds for discrete optimization problems that is based on a concept of branching duality. It can be applied when no useful integer programming model is available, and we illustrate this with the minimum bandwidth problem. The method strengthens a known bound for a given problem by formulating a dual problem whose feasible solutions are partial branching trees. It solves the dual problem with a “worst-bound” local search heuristic that explores neighboring partial trees. After proving some optimality properties of the heuristic, we show that it substantially improves known combinatorial bounds for the minimum bandwidth problem with a modest amount of computation. It also obtains significantly tighter bounds than depth-first and breadth-first branching, demonstrating that the dual perspective can lead to better branching strategies when the object is to find valid bounds.Accepted manuscrip

\u27I Have A Student Who ...\u27: Systematically Addressing Student Misbehaviors in the Basic Course

This Basic Course Forum highlights authors’ responses to the following topics: What curricular programs present the best opportunity for curricular connections to the basic course? Building upon conversations from the July 2018 Basic Course Institute (hosted by University of Dayton), what administrative successes and challenges do basic course directors face

Letter from J[ohn] D[aggett] Hooker to John Muir, 1910 Jun 25.

J D HookerSympathyJ. D. HOOKER130 SouthLos Angeles StreetLos Angeles, Cal., June 25th/10My dear Mr MuirYour letter announcing the closing se[illegible] in this [strange?] eventful history is received that you have our deep deep sympathy need not be told here. We too have known full well the stern relentless sorrow and know the agony thereof. When the g[illegible] [illegible] death calls we may not answer absent Time and time only can soften the crueties of the hour.In sorrows burden believe me your faithful friend and comradJno D Hooker0481

Letter from J[ohn] D[aggett] Hooker to John Muir, 1910 Mar 16.

[letterhead] March 16 1910Dear Mr MuirMr Carnegie is to lunch at our house Wednesday the 23rd at 1-P.M. We are to have a stag party. You are the guest that must be on hand Mr Carnegie is most solictious and I have promised to have you on hand: with Dr Davidison of the Academy of Science you three scotch men should have a good time - Dont fail to come I shall [illegible]e you at the same time I mail this. There will be but six of us. Come and come days ahead of time. faithfully J D Hooker0373