identification of rapid degradation of ecological resources requires effective environmental monitoring including ecological integrity assessment .our first aim is to analyze ecological integrity in a landscape context while developing a method to assess integrity in spite of a dearth of historical data. we used a spatial-temporal reference framework for land cover maps for assessing ecological...

CLINICAL VIGNETTE A 64-year-old male with a history of essential tremor with bilateral thalamic ventralis intermedius deep brain stimulation implants had elevated therapeutic impedance values despite normal lead integrity impedances and good response to stimulation. CLINICAL DILEMMA Do elevated therapeutic impedance values indicate a sign of hardware malfunction? What are the guidelines to ap...

Today, service-oriented architectures (SOA) can be used for supporting the implementation of cross-organizational workflows with autonomous and heterogeneous participants. In this context, the concept of choreographies is well established, introducing a new viewpoint on interacting services. A choreography model describes interactions from the perspective of an ideal observer who is able to see...

We propose a new approach to check whether a given UML class diagram with its OCL integrity constraints satisfies a set of desirable properties such as schema satisfiability, class liveliness, redundancy of integrity constraints or reachability of partially specified states. Our approach is based on translating both the class diagram and the OCL constraints into a logic representation. Then, we...

The background field approach to multi-loop calculations in gauge field theories is presented. A relation between the gauge-invariant effective action computed using this method and the effective action of the conventional functional approach is derived. Feynman rules are given and renormalization is discussed. It is shown that the renormalization programme can be carried out without any refere...