This paper considers the relationship between the extraction rates and remaining reserves of a nonrenewable resource. Under general conditions the derived extraction rule is firstly linear, and secondly exhibits a slope term common to all extractors regardless of pricing behaviour and costs whilst differences are captured by the intercept. Data from the world oil industry supports the hypothesi...

Males of at least six species of the digger wasp genus Philanthus are territorial, defending areas on the ground and evidently marking these with a pheromone. This is also true of P. zebratus at two widely separate localities in Colorado. However, males in an aggregation in Jackson Hole, Wyoming, are nonterritorial and participate in flights serving to intercept females leaving and entering the...

The primary purpose of the study was to determine the relationships between %HRR vs. %VO2R and %HRR vs. %VO2max during maximal elliptical crosstrainer (ECT) exercise. A secondary aim was to compare the %HRR vs. %VO2R and %HRR vs. %VO2max relationships between maximal ECT and treadmill (TM) exercise. Adult subjects (n = 48) completed a maximal exercise test on the ECT, with a subgroup (N = 24) a...

Vulnerability in the interception of radar transmission by anti-radiation missiles or the like, can be avoided by using Low Probability of Intercept (LPI) techniques like Barker codes, Frank codes, polyphase codes, Costas code, etc. In this project, we simulate different kinds of complex waveforms that are obtained by superimposing LPI signal onto the radar signal. Analysis of the power spectra...

Arguments are presented for the odderon intercept being exactly equal to unity. A variational method is presented based on a complete system of onegluon functions. For the odderon, the highest intercept calculated by this method is 1− (3αs/π) 0.45. March 1996 hep-ph/9603218 US-FT/7-96 ∗ Visiting Professor IBERDROLA. On leave of absence from the Department of High Energy Physics, University of S...

RATIONALE During exercise, heart failure patients (HF) show an out-of-proportion ventilation increase, which in patients with COPD is blunted. When HF and COPD coexist, the ventilatory response to exercise is unpredictable. OBJECTIVES We evaluated a human model of respiratory impairment in 10 COPD-free HF patients and in 10 healthy subjects, tested with a progressive workload exercise with di...

It has long been thought that degeneracy in unfolding only concerned non-metric unfolding. Recently, Busing, Groenen, and Heiser have established that degeneracy occurs for all transformations that include estimation of an intercept and a slope. Consequently, degeneracy also plagues metric unfolding, since one member of the metric transformation family, the interval transformation, includes est...

We address optimal placement of vehicles with simple motion, to intercept a mobile target that arrives stochastically on a line segment. The optimality of vehicle placement is measured through a cost function associated with intercepting the target. With a single vehicle, we assume that the target either moves with fixed speed and in a fixed direction or moves to maximize the vertical height or...