Home About us Contact
|
Home About us Contact | ||
|
|
||
Same Ideas (same + idea)
Selected AbstractsDevelopment of highly accurate interpolation methodfor mesh-free flow simulations III.INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, Issue 7 2003Analysis of accuracy, stability Abstract A highly accurate interpolation method, CIVA, improves the accuracy of mesh-free and grid-less methods by taking into consideration first-order spatial derivatives as variables; an approach based on the same idea as that on which CIP is based. In this study, the accuracy and stability of CIVA is evaluated by analytically and numerically. First, the general formulation of CIVA for the n -dimensional case is described. Since CIVA contains the bubble function, we consider the determination methods: constant curvature condition and utilization of another computing point. Then, the relation between the bubble function in the CIVA method and the accuracy and stability is made clear by the analysis based on the Taylor expansion. Some computations of two-dimensional passive scalar advection and advection,diffusion problems are performed for the verification of accuracy and stability. Copyright © 2003 John Wiley & Sons, Ltd. [source] Art As Religious Commitment: Kafka's Debt to Kierkegaardian Ideas and their Impact on his Late StoriesGERMAN LIFE AND LETTERS, Issue 4 2000Leena Eilttä Although Kafka's reception of Kierkegaardian ideas has received much critical attention the critics have so far paid little heed to similarities between Kierke-gaard's religious and Kafka's aesthetic views. My intention in the following is to show that in spite of Kafka's critical remarks on his philosophy, Kierkegaard's definition of a religious person influenced his description of the artist's existence in Erstes Leid (1922), Ein Hungerkünstler (1922) and Josefine, die Sängerin oder das Volk der Mäuse (1924). In these stories Kafka turns Kierkegaard's ideas about spiritual inwardness and passionate attitude towards religious life into artistic inwardness and passionate attitude towards art. He also describes how devotion that these artists feel towards their art leads to their solitude and how their lives reflect suffering, doubt and despair which is similar to Kierkegaard's description of religious suffering. Kafka's critical remarks on Kierkegaard's philosophy should therefore be understood as a clear rejection of Kierkegaard's Protestant theology, although these same ideas gave him inspiration to formulate his views on the artist's existence. [source] Implicit J2 -bounding surface plasticity using Prager's translation ruleINTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, Issue 10 2002Francisco J. Montáns Abstract A bounding surface J2 -plasticity model that uses Prager's translation rule is presented. The model preserves Masing's rules and is developed from the same ideas as classical infinitesimal J2 -plasticity, resulting in the same formulation with the exception of the algorithm for the computation of the hardening function. Instead of utilizing a loading surface as in a previous formulation, hardening surfaces are introduced; the formulation is similar to that of multilayer plasticity using Prager's rule, presented in previous work. An implicit algorithm based on the radial return concept is used, and the consistent elastoplastic tangent is also developed in closed form. Examples illustrating anisotropic behaviour are presented and compared to that predicted by a multilayer J2 -plasticity model. The model is also applied to a soil dynamics problem to show the robustness of the algorithm and its applicability to complex loading. Copyright © 2002 John Wiley & Sons, Ltd. [source] SPC with Applications to Churn ManagementQUALITY AND RELIABILITY ENGINEERING INTERNATIONAL, Issue 5 2004Magnus Pettersson Abstract The process of a customer replacing one provider of a service or merchandise for another is called a churn. In competitive business environments, such as telecommunications, insurance, banking, hotels and mail order, customers can easily leave one company,and they really do. Since the cost of recruiting new customers is higher than the cost of retaining them, it is crucial for companies in these trades to monitor their customer population in order to keep churn rates low. Statistical process control (SPC) methods are developed to cover the needs of monitoring industrial processes and intensive care patients. They are based on procedures where data are analysed automatically and on-line. When results indicate that the process is out of control, an alarm alerts an engineer or physician, who can take corrective action in order to get the process back under control. This paper discusses the use of SPC methods as a means to enhance precision in detecting increasing churn rates. We show that SPC methods can give market analysts a powerful tool for tracking customer movements and churn. An early warning system (EWS), based on the same ideas as used in process industries, will give foresight and a longer time to react against churn, hence providing an advantage over competitors. In the examples discussed in this paper we monitor usage in order to detect decreasing volumes that indicate churn. Data were extracted from internal databases, and analysed and reported on-line. We conclude that the potential improvement by using SPC methods in churn management is high. Copyright © 2004 John Wiley & Sons, Ltd. [source] | ||||||||||