In fractured porous media, interactions between immiscible fluid phases within the fractures place a critical control on system behavior. A key component of the interactions is the geometry, or structure, of the respective phases. Over the past 10 years, process-based experiments have greatly increased our understanding of phase structure development within individual fractures. In the past 2 y...

One of the most popular methods for modeling students’ knowledge is Corbett and Anderson’s [1] Bayesian Knowledge Tracing (KT) model. The original Knowledge Tracing model does not allow for individualization. In this work, we focus on comparing two different individualized models: the Student Skill model and the two-phase model, to find out which is the best for formulating the individualizatio...

Reversion phenomena in the FCC Ising system was investigated using the kinetic Ising model. The results were compared with the experimental results obtained for the metastable G.P. zones in Al-Zn binary alloys. The present simulations have made it clear that the kinetic Ising model can qualitatively well reproduce the structure change during reversion in the Al-Zn metastable system. Comparison ...

This paper describes a robust two-phase pitch marking method based on peak-valley decision and dynamic programming. In the first phase, we select either peaks or valleys for pitch mark candidates according to its similarity to an estimated pitch curve. In the second phase, we define state and transition probabilities, and then employ dynamic programming to find the most likely pitch marks. We h...

Health care providers need to exchange medical data to provide complex medical treatments. In general, regulations of privacy protection define strong constraints for exchanging such personal data within a distributed system. Privacy-preserving query protocols provide mechanisms for implementing and maintaining these privacy constraints. In this paper, we introduce a new two-phase protocol for ...

A mathematical model is established for chloride penetration in saturated concrete. The model takes into account various influential parameters such as water-to-cement ratio, curing time, types of cement, and aggregate content. Two material models are developed for binding capacity and chloride diffusivity, which have a dominant effect on the chloride diffusion process. The chloride binding cap...

We present in this paper ObjectRunner, a system for extracting, integrating and querying structured data from the Web. Our system harvests real-world items from template-based HTML pages (the so-called structured Web). It illustrates a two-phase querying of the Web, in which an intentional description of the targeted data is first provided, in a flexible and widely applicable manner. ObjectRunn...

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The problem of numerical simulation of forest fires is considered. A two-dimensional two-phase mathematical model, the numerical method and the results of a demonstrative numerical simulation of the process of forest fire spread are presented. Key-Words: Forest fire, mathematical model, numerical method, numerical simulation

In an effort to understand the value of Internet commerce, Keeney interviewed over 100 individuals and proposed two sets of variables: means and fundamental objectives for Internet shopping. The first help businesses deliver what is important for customers so that the customers’ objectives are achieved. Fundamental objectives represent ultimate values that customers care about and will influenc...