We propose an architecture called InterPay for managing nancial interactions with for-pay digital library services. The approach accommodates multiple payment mechanisms, interaction models, and charging policies. Key components of our model are payment agents and payment capabilities that encapsulate payment policy and the details of payment on behalf of the user. Collection agents and collect...

The FARGOS/VISTATM suite of technologies implements an infrastructure for the development, deployment and non-stop operation of transparently distributed, multithreaded, architecture-neutral, object-oriented peer-topeer applications. These capabilities can be applied in a variety of paradigms, ranging from simple client/server applications to more sophisticated applications that are dynamically...

Having access to accurate position information is a key requirement for many wireless sensor network applications. We present SpiderBat, an ultrasound-based ranging platform for wireless sensor networks. It is designed to extend existing node platforms with ultrasound ranging capabilities. SpiderBat features four pairs of independently controllable ultrasound transmitters and receivers, which p...

We introduce metric temporal description logics (mTDLs) as combinations of the classical description logic ALC with (a) LTL, an extension of the temporal logic LTL with succinctly represented intervals, and (b) metric temporal logic MTL, extending LTL with capabilities to quantitatively reason about time delays. Our main contributions are algorithms and tight complexity bounds for the satisfiab...

Predicting the response of components or systems exposed to ionising radiation is often very difficult. Reliable radiation tolerance estimates therefore typically rely on extended radiation experiments. SCK·CEN, the Belgian Nuclear Research Center, is operating different gamma irradiation facilities, with wide gamma dose rates ranging from 0.1 Gy/h up to 50 kGy/h and with environmental control ...

Radiation hardness assurance for applications in harsh environments ranging from space missions to fusion reactor diagnostics need to be based on extended radiation experiments. SCK·CEN, the Belgian Nuclear Research Center, is operating different gamma irradiation facilities, with gamma dose rates ranging from 0.1 Gy/h up to 50 kGy/h and with environmental control and on-line instrumentation ca...

Research Article Gimun Kim Konyang University [email protected] Bongsik Shin San Diego State University [email protected] Kyung Kyu Kim Yonsei University [email protected] Ho Geun Lee Yonsei University [email protected] More and more publications are highlighting the value of IT in affecting business processes. Recognizing firmlevel dynamic capabilities as key to improved firm performan...

In this paper we present the Uppsala Quantum Chemistry package (UQUANTCHEM), a new and versatile computational platformwith capabilities ranging from simpleHartree–Fock calculations to state of the art First principles Extended Lagrangian Born–Oppenheimer Molecular Dynamics (XL-BOMD) and diffusion quantumMonte Carlo (DMC). The UQUANTCHEM package is distributed under the general public license a...