In order to get more experiences about user modeling and more knowledge about which user modeling techniques are really helpful, these techniques must be applied. In order to make BGP-MS available for a wide range of applications, the BGP-MS project decided to make a port of its workstation-based software to the PC/DOS/MS-Windows platform. This paper describes the main aspects in which the resu...

The Session Initiation Protocol (SIP) is the multimedia communication protocol of the future. Used for Voice-over-IP (VoIP), Internet Multimedia Subsystem (IMS) and Internet Protocol Television (IPTV), its concepts are based on mature and open standards and its use is increasing rapidly within recent years. However, with its acceptance as a mainstream communication platform, security concerns b...

To examine the evolution of inter-segmental coordination over time, a previously developed multi-variate model of postural coordination during quiet stance (Kuo et al. 1998) has been extended. In the original model, postural coordination was treated as an eigenvalue-eigenvector problem between two segmental degrees of freedom represented by angular displacements of the trunk and lower limb. Str...

In the Spring of 1998, researchers at the Center for Creative Leadership chose to use the Graded Response Model by Samejima as part of a project to assess the behavioral changes that are seen in the participants in the leadership development programs of the Center. It was determined that the existing DOS and Windows software would not function with sufficient reliability within the extant compu...

The influence of dynamical correlation effects on the magneto-optical properties of ferromagnetic Fe and Ni has been investigated. In addition the temperature dependence of the self-energy and its influence on the DOS and optical conduc­ tivity is considered. Magneto-optical properties were calculated on the basis of the one-particle Green’s function, which was obtained from the DMFT-SPTF proce...

We develop a computationally efficient algorithm for parameter estimation of superimposed signals based on the EM algorithm. The idea is to decompose the observed data into their signal components and then to estimate the parameters of each signal component separately. The algorithm iterates back and forth, using the current parameter estimates to decompose the observed data better and thus inc...

This paper investigate the behavior of DoS attacks while they are affecting the stability of computer systems as well as exploit a distributed framework which will monitor, detect, and prevent DoS attacks. This framework includes several distributed monitors implemented at the critical components and a management center which is used to detect and prevent DoS attacks.

Network Denial of Service (DoS) attacks are increasing in frequency, severity and sophistication, making it desirable to measure the resilience of systems to DoS attacks. In this paper, we propose a simulation-based methodology and apply it to attacks on object location services such as DNS. Our results allow us to contrast the DoS resilience of three distinct architectures for object location.

Ksionzek et al (Reports, 28 October 2016, p. 456) provide important data describing the distribution of dissolved organic sulfur (DOS) in the Atlantic Ocean. Here, we show that mixing between water masses is sufficient to explain the observed distribution of DOS, concluding that the turnover time of refractory DOS that Ksionzek et al present cannot be deduced from their data.