Two major trends in eLearning are the shift from presentational towards activating learning objects and the shift from proprietary towards SCORM conformant delivery systems. In a large program on the design, development and use of digital learning material for food and biotechnology in higher education, a large amount of experience has been gained with regard to the possibilities of learning ob...

Knowledge transfer was the most important factors of success for organizations in today's complex and changing environment as one of aspects of knowledge management. The aim of this study was to investigate the relationship between intrinsic motivation and extrinsic motivation by transfer the employee’s knowledge in social security organizations in Kerman. The method research is descriptive and...

This paper considers the fitting of ellipses to edge-based pixel data in digital images. It infers the ellipses as projected circles, viewed obliquely, and uses this information to constrain the position, viewpoint and scale of model objects projected onto the image. A central theme of the work is the explicit use of uncertainty, which reflects observation errors in the image data, and which is...

This paper analyzes sequential auctions for budget constrained bidders, for multiple heterogeneous common value objects. In most auctions, bidders not only have valuations for objects but also have budget constraints (i.e., constraints on how much they can actually spend in an auction). Given these constraints, the bidders’ problem is to determine how much to bid in each auction. To this end, t...

Despite increasing focus on data publication and discovery in materials science and related fields, the global view of materials data is highly sparse. This sparsity encourages training models on the union of multiple datasets, but simple unions can prove problematic as (ostensibly) equivalent properties may be measured or computed differently depending on the data source. These hidden contextu...

We study the optimization of the expected number of bytes that must be transferred by a Web server when a user visits one of its pages. Given a Web site, we want to find an assignment of hotlinks (shortcuts) that minimizes the expected data transfer, i.e., the average amount of bytes to be downloaded in order to reach one of its pages. We propose an optimization algorithm and perform simulation...

The ability to move data quickly between the nodes of a distributed system is important for the performance of cluster computing frameworks, such as Hadoop and Spark. We show that in a cluster with modern networking technology data serialization is the main bottleneck and source of overhead in the transfer of rich data in systems based on high-level programming languages such as Java. We propos...

Rui Cortes~ ao Ralf Koeppe University of Coimbra German Aerospa e Center, (DLR) Ele tri al Engineering Department Institute of Roboti s and System Dynami s Institute of Systems and Roboti s, (ISR) P.O. Box 1116 3030 Coimbra 82230 Wessling Portugal Germany email: ortesao isr.u .pt email: Ralf.Koeppe dlr.de Abstra t The paper des ribes the design of a data fusion module for skill transfer purpose...

The trend of data intensive grid applications has brought grid storage protocols and servers into focus. The objective of this study is to gain an understanding of how time is spent in the storage protocols and servers. The storage protocols have a variety of tuning parameters. Some parameters improve single client performance at the expense of increased server load, thereby limiting the number...

Volume visualization is a powerful technique for depicting layered structures in 3D volume data sets. However, it is a major challenge to obtain clear visualizations of a volume with layers clearly revealed. In particular, the specification of the transfer function is frequently a time-consuming and unintuitive task in volume rendering. In this paper, we describe a global optimization and two u...