We consider the nonconvex problem (RQ) of minimizing the ratio of two nonconvex quadratic functions over a possibly degenerate ellipsoid. This formulation is motivated by the so-called Regularized Total Least Squares problem (RTLS), which is a special case of the problem’s class we study. We prove that under a certain mild assumption on the problem’s data, problem (RQ) admits an exact semidefin...

Mobile entity navigation in dynamic environments is an essential part of many mission critical applications like search and rescue and fire fighting. The dynamism of the environment necessitates the mobile entity to constantly maintain a high degree of awareness of the changing environment. This criteria makes it difficult to achieve good navigation performance by using just on-board sensors an...

Determination of animal power consumption by indirect calorimetry relies upon accurate estimation of the thermal equivalent of oxygen consumed or carbon dioxide produced. This estimate is typically based upon measurement or assumption of the respiratory quotient (RQ), the ratio of CO2 produced to O2 consumed. This ratio is used to indicate the mixture of lipids, carbohydrates and proteins in th...

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Let u(x) x ∈ Rq be a symmetric non-negative definite function which is bounded away from zero but which may have u(0) = ∞. Let px,δ(·) be the density of an Rq valued canonical normal random variable with mean x and variance δ and let {Gx,δ; (x, δ) ∈ Rq× [0, 1]} be the mean zero Gaussian process with covariance EGx,δGy,δ′ = ∫ ∫ u(s− t)px,δ(s)py,δ′(t) ds dt. A finite positive measure μ on Rq is s...

OBJECTIVE The early detection of NSCLC is of importance because it provides chances for better outcomes. The aim of the study was to explore the clinical utility of EGFR and hTERT mRNA expression as markers for diagnosis of NSCLC. METHODS EGFR and hTERT mRNA were quantified by quantative reverse transcription real time polymerase chain reaction in plasma of 45 non-small cell lung cancer (NSCL...

Enterostatin, a pentapeptide cleaved from procolipase, suppresses fat intake after peripheral and central administration. Chronic treatment of rats with enterostatin decreases body weight and body fat. The effect was greater than could be accounted by the reduction in food intake alone. Hence, we have investigated the effect of enterostatin on energy metabolism. Male Sprague-Dawley rats adapted...

OBJECTIVE Annexin-A1 (ANXA1/AnxA1) and galectin-1 (LGALS1/Gal-1) are mediators that play an important role in the inflammatory response and are also associated with carcinogenesis. We investigated mRNA and protein expression in precancerous gastric lesions that participate in the progression cascade to gastric cancer, such as intestinal metaplasia (IM) and gastric ulcer (GU). METHODS Quantita...

Hamidu, J.A., J.J.R. Feddes, C.A. Ouellette and G.M. Fasenko. 2010. Measurement of avian embryo respiration by an indirect calorimetric system. Canadian Biosystems Engineering/Le génie des biosystèmes au Canada. 52: 4.9 4.14. Accurate measurement of embryonic respiration can be used to determine the viability of the chicken embryo and the chick upon hatching. This measurement is based on both t...

We consider the computably enumerable sets under the relation of Qreducibility. We first give several results comparing the upper semilattice of c.e. Q-degrees, 〈RQ,≤Q 〉, under this reducibility with the more familiar structure of the c.e. Turing degrees. In our final section, we use coding methods to show that the elementary theory of 〈RQ,≤Q 〉 is undecidable.