Use In Various Situations Research Articles

Parameter identification of a compliant nonlinear SDOF system in random ocean waves by reverse MISO method

The determination of the drag and inertia coefficients, which enter into the wave force model given by Morison's equation, is particularly uncertain and difficult when a linear spectral model is used for ocean waves, and the structure is compliant and has nonlinear dynamic response. In this paper, a nonlinear System Identification method, called Reverse Multiple Inputs–Single Output (R–MISO) is applied to identify the hydrodynamic coefficients as well as the nonlinear stiffness parameter for a compliant single-degree-of-freedom system. Four different types of problems have been identified for use in various situations and the R–MISO has been applied to all of them. One of the problems requires iterative solution strategy to identify the parameters. The method has been found to be efficient in predicting the parameters with reasonable accuracy and has the potential for use in the laboratory experiments on compliant nonlinear offshore systems.

Web Performance Modeling Issues

The Web has experienced phenomenal growth and has become an important element of the information infrastructure of many organizations. Web performance and around-the-clock availability are the major concerns of Webmasters of sites that support mission-critical applications, such as electronic commerce. Web sites are complex computer systems consisting of many interconnected computers, networks, and routers. Some of the computers have specific functions such as authorization or caching. Workloads on Web sites are often unpredictable in nature. Heavy-load spikes and a large variability of the objects requested over the Web are unique characteristics of Web workloads. This paper reviews the important issues and challenges in modeling Web-based systems. Workload characterization, predictive models, and their use in various situations are discussed.

Misoprostol en obstetricia

El misoprostol es una prostaglandina sintética relacionada estructuralmente con la prostaglandina E1, Se emplea principalmente para prevenir la enfermedad ulcerosa inducida por antinflamatorios no esteroideos. Sin embargo, ha demostrado tener efecto sobre el útero causando contracciones, El propósito de esta revisión es analizar lo expuesto por múltiples estudios publicados con respecto al uso de la droga en diferentes situaciones durante el embarazo, especialmente en gestaciones a término con feto vivo ya que podría convertirse en una alternativa económica y eficaz si igualmente pudiera demostrarse que es segura.

Measuring ordinal association in situations that contain tied scores.

The construal of ties is critical for assessing the association between two variables. Ties should be excluded when the investigator's data-collection procedure forces ties to occur (e.g., a J-place rating scale is used to rate K items, with J < K; a criterion variable contains fewer than K possible outcomes per item). Four measures arising from excluding or including ties on 2 ordinal variables are Goodman & Kruskal's G, Somer's dyx, Kim's dyx, and Wilson's e. In contrast to measures having variance-accounted-for interpretations, probabilistic interpretations developed here can be applied meaningfully both to ordinal-scaled variables and to stronger scales. Recommendations are offered for which measure to use in various situations.