This paper presents a service integration model through a study of major for-profit online communities in both North America and China. Our study examines various types of communities and proposes particular means by which these communities might integrate their services with each other. Three integration strategies are identified: vertical integration, horizontal integration, and hybrid integr...

Two continuous gas assessment units (AUs) are present in the Late Triassic (Carnian) onshore rift basins of North Carolina and south-central Virginia. The source rocks are freshwater lacustrine shales that were deposited near the paleo-equator after the onset of Pangea rifting. These two rift basins, the Deep River basin wholly contained within North Carolina’s border, and the Dan River-Danvill...

CHAMP satellite and relatively densely spaced ground-based data measured over southern Africa between 2005 and 2010 are combined in a new regional, harmonic spline based, core field model. This new SACFM-2 model is compared to the regional SARM model, which is based only on satellite data, and the global CHAOS-6 model. The results agree well in the vertical (Z) component, with somewhat larger d...

Let G be a finite group and F be a family of subgroups of G closed under conjugation and taking subgroups. We consider the question whether there exists a periodic relative F-projective resolution for Z when F is the family of all subgroups H ≤ G with rkH ≤ rkG − 1. We answer this question negatively by calculating the relative group cohomology FH(G,F2) where G = Z/2 × Z/2 and F is the family o...

An optimized three-lead ECG hierarchial decision-tree type of classification system for myocardial infarction is presented. For selection of the best threshold values for each criterion and the best association of features, we developed a procedure based on "receiver operating characteristic" (ROC) curve data analysis and information theory. Optimization was obtained through maximization of inf...

Transportation Research Record: Journal of the Transportation Research Board, No. 2291, Transportation Research Board of the National Academies, Washington, D.C., 2012, pp. 80–92. DOI: 10.3141/2291-10 Z. Li, Room 1249A Engineering Hall; M. V. Chitturi and A. R. Bill, Room B243 Engineering Hall; and D. A. Noyce, Room 1204 Engineering Hall, Traffic Operations and Safety Laboratory, Department of ...

Medicinal plante Borazambol with the scientific name of Perovskia abrotanoides Karel. belongs to the family Lamiaceae. It is growing wild in the margin of mountainous roads of arid and cold climate of north Iran. It is for a long time that indigenous people by different methods in traditional medicine use its products in preventing and curing diseases. In this research, essential oils of Perovs...

Often a statistical test is performed in which the observed outcome favors the alternative but the evidence in favor of the alternative is not statistically significant. Suppose that, for example, a researcher tests the hypothesis that the mean is 10 versus the alternative is less than 10 using a z-test. Suppose further that based on a sample of size 8, the p-value is 0.078 (hence the null hypo...

Geostrophic turbulence near horizontal surfaces on which the vertical velocity vanishes exhibits a forward cascade of buoyancy variance, characterized by a shallow energy spectrum, secondary roll-up of filaments, and a fat-tailed vorticity probability distribution. Such surfaces occur at rigid boundaries, but also at discontinuous jumps in stratification. Here we relax this mathematical idealiz...

North Korea suffered from severe famine in the mid-1990s; this impacted many areas, including people's transnational movement, child growth, and mortality. This review carefully examined nutritional status trends of children in North Korea using published reports from national nutrition assessment surveys. Nutritional adaptation of North Korean child refugees living in South Korea was also stud...