conditional standard deviation is a piecewise linear function of past values of ... An optimal threshold is selected by
Threshold; Bill Myers; Zondervan, 1997; 331 pages; 9780310201205; 1997 Reproduction numbers and sub-threshold endemic equilibria for compartmental models of disease transmission, a precise definition of the basic reproduction number, R 0, is presented for a general compartmental disease transmission model based on a system of ordinary differential equations. It is shown that, if R 0< 1, then the disease free equilibrium is locally. The threshold approach to clinical decision making, the physician's estimate of the probability that a patient has a particular disease is a principal factor in the determination of whether to withhold treatment, obtain more data by testing, or treat without subjecting the patient to the risks of further diagnostic tests. Using. Threshold heteroskedastic models, in this paper we consider a modification of the classical ARCH models introduced by Engle (1982). In this modified model the conditional standard deviation is a piecewise linear function of past values of the white noise. This specific form allows different reactions. Empirical threshold values for quantitative trait mapping, the detection of genes that control quantitative characters is a problem of great interest to the genetic mapping community. Methods for locating these quantitative trait loci (QTL) relative to maps of genetic markers are now widely used. This paper addresses an issue. Sample splitting and threshold estimation, threshold models have a wide variety of applications in economics. Direct applications include models of separating and multiple equilibria. Other applications include empirical sample splitting when the sample split is based on a continuously-distributed variable such. A threshold of ln n for approximating set cover, given a collection F of subsets of S={1. N}, set cover is the problem of selecting as few as possible subsets from F such that their union covers S,, and max k-cover is the problem of selecting k subsets from F such that their union has maximum cardinality. Both these. Low threshold, large T/sub o/injection laser emission from (InGa) As quantum dots, low threshold, large T/sub o/injection laser emission via zero-dimensional states in (InGa) As quantum dots is demonstrated. The dots are formed due to a morphological transformation of a pseudomorphic In/sub 0.5/Ga/sub 0.5/As layer. Laser diodes. A threshold selection method from gray-level histograms, a nonparametric and unsupervised method of automa-tic threshold selection for picture segmentation is presented. An optimal threshold is selected by the discriminant criterion, namely, so as to maximize the separability of the resultant classes in gray levels. Anaerobic threshold: review of the concept and directions for future research, although the term anaerobic threshold was introduced 20 years ago, the concept that an exercise-induced lactic acidosis occurs at a particular oxygen uptake which varies among subjects is over 50 years old. The surge of new interest in the parameter relates to its strong. Threshold effects in non-dynamic panels: Estimation, testing, and inference, threshold regression methods are developed for non-dynamic panels with individualspecific fixed effects. Least squares estimation of the threshold and regression slopes is proposed using fixed-effects transformations. A non-standard asymptotic theory of inference. states from time-dependent density-functional response theory: Characterization and correction of the time-dependent local density approximation ionization threshold, this paper presents an evaluation of the performance of time-dependent density-functional response theory (TD-DFRT) for the calculation of high-lying bound electronic excitation energies of molecules. TD-DFRT excitation energies are reported for a large number. Improved assessment of significant activation in functional magnetic resonance imaging (fMRI): use of a clusterâ size threshold, the typical functional magnetic resonance (fMRI) study presents a formidable problem of multiple statistical comparisons (ie,> 10,000 in a 128 x 128 image). To protect against false positives, investigators have typically relied on decreasing the per pixel false positive. Threshold externalities in economic development, standard one-sector growth models often have the counterfactual implication that economies with access to similar technologies will converge to a common balanced growth path. We propose an elaboration of the Diamond model that permits multiple, locally stable. A new method for detecting anaerobic threshold by gas exchange, excess CO2 is generated when lactate is increased during exercise because its [H+] is buffered primarily by HCO-3 (22 ml for each meq of lactic acid). We developed a method to detect the anaerobic threshold (AT), using computerized regression analysis of the slopes. Threshold models of collective behavior, models of collective behavior are developed for situations where actors have two alternatives and the costs and/or benefits of each depend on how many other actors choose which alternative. The key concept is that of threshold: the number or proportion of others. Multidimensional quantum well laser and temperature dependence of its threshold current, a new type of semiconductor laser is studied, in which injected carriers in the active region are quantum mechanically confined in two or three dimensions (2D or 3D). Effects of such confinements on the lasing characteristics are analyzed. Most important, the threshold. Anaerobic threshold and respiratory gas exchange during exercise, wASSERMAN, KARLMAN, BRIAN J. WHIPP, SANKAR IX KOYAL, AND WILLIAM L. BEAVER. Anaerobic threshold and respiratory gas exchange during exercise. J. Appl. Physiol. 35 (Z): 236-243. 1973.--Alterations in gas exchange were studied in man during. Apoptosis in cancer therapy: crossing the threshold, how do antineoplastic therapies cure cancer? Longstanding dogma held that such treatments selectively target rapidly dividing cells. We see in the clinics, however, that this explanation is not satisfactory since curable cancers may be relatively slow growing. Threshold-free cluster enhancement: addressing problems of smoothing, threshold dependence and localisation in cluster inference, many image enhancement and thresholding techniques make use of spatial neighbourhood information to boost belief in extended areas of signal. The most common such approach in neuroimaging is cluster-based thresholding, which is often more sensitive than voxel-wise. Ultra-low electrical percolation threshold in carbon-nanotube-epoxy composites, epoxy composites based on aligned CVD-grown multi-wall carbon nanotubes with weight fractions ranging from as low as 0.001 up to 1 wt% were produced. The resulting electrical properties were analysed by AC impedance spectroscopy. The composite conductivity. by BE Hansen
