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Show/Hide Abstract Bridging the Heterogeneity of Orchestrations – A Petri Net–based Integration of BPEL and Windows Workflow (2012)
Stefan Kolb Jörg Lenhard Guido Wirtz
Service orchestrations are a powerful tool for implementing intra– and interorganizational business processes that base on services. Several heterogeneous orchestration languages can be found in contemporary IT landscapes. While the Web Services Business Process Execution Language (BPEL) is the de facto standard, others gain attention, including Windows Workflow (WF) in the .NET segment. When integrating orchestrations, incompatibilities between them can easily arise. In this paper, we investigate an automated Petri net–based integration between BPEL and WF to solve these issues with behavioral adapter services. We provide a mapping of WF to Open Workflow Nets (oWFNs) and implement it in a compiler. Thereby, we integrate our approach with existing approaches for BPEL and adapter synthesis and validate the integration with a standards–based case study using the two languages.
Standards of English in Malta and the Channel Islands (2012)
Manfred Krug Anna Rosen
A Case Study on Model-Driven Data Warehouse Development (2012)
Thomas Benker Carsten Jürck
Introducing Fairness into Compositional Verification via Unidirectional Counters (2012)
Antti Siirtola Antti Puhakka Gerald Lüttgen
Doubtless in Seattle: Exploring the Internet Delay Space (2012)
Philipp Eittenberger Marcel Großmann Udo Krieger
Show/Hide Abstract Proximity Enhanced Mobile D2D Video Streaming (2012)
Marcel Großmann
Mobile video consumption establishes as a massively growing market. To guarantee an acceptable quality of experience to the end user, current studies try to improve data transmissions on air interfaces. However, the bottleneck in cellular mobile networks is the traversal of the infrastructure. A paradigm to circumvent this fact and to increase the system’s capacity is given by device-to-device communication in combination with proximity detection. Those networks promise scalability and performance improvements in utilizing scarce resources. This principle is easy to integrate into an existing mobile peer-to-peer video streaming system. In this study, we present measurements on application level to determine the performance that a smart device contributes to different wireless networks. The results outline that content uploading from smart devices is negligible in cellular networks, but shows acceptable performance in WiFi networks. This evaluation is the foundation to build a proximity enhanced video streaming system for mobile devices.
On Parallel Software Verification Using Boolean Equation Systems (2012)
Alexander Ditter Milan Češka Gerald Lüttgen
Modal Interface Automata (2012)
Gerald Lüttgen Walter Vogler
Show/Hide Abstract The bi-absolutive construction in Nakh-Daghestanian (2012)
Diana Forker
While all Nakh-Daghestanian languages show ergative–absolutive patterns of case assignment and gender/number agreement, many languages have sentences containing imperfective transitive predicates with both A and P in the absolutive case. In these bi-absolutive constructions, A is generally topicalized whereas P is pragmatically demoted. Bi-absolutive constructions show a number of structural properties (e.g. word-order constraints) which are absent in ergative constructions, but the precise nature and number of these constraints differs from language to language. In this article I offer the first in-depth analysis of bi-absolutive constructions, describing also the range of variation in these constructions in the Nakh-Daghestanian languages. I argue that the traditional biclausal analysis fails to explain all properties of these constructions. Other structural approaches such as anti-passivization and noun-stripping are also rejected as inadequate. Instead, I propose to analyze bi-absolutive constructions in the wider context of information-restructuring devices.
Show/Hide Abstract Adverbial clauses in the Tsezic languages (2012)
Bernard Comrie Diana Forker Zaira Khalilova
This contribution summarizes and illustrates the most important types of converbs found in the Tzesic languages and describes their semantic, morphological and syntactic properties. In particular, various types of “crossclausal dependencies” as described by Gast & Diessel (this volume) are investigated, e.g. restrictions on coreference and extraction (“argumentrelated cross-clausal dependencies”) and the interpretation of scope-bearing operators such as tense, evidentiality, illocutionary force, and focus (“predicate- related cross-clausal dependencies”). In providing detailed analyses of such phenomena in a group of underresearched languages, we intend to make a contribution both to our understanding of linguistic variation in the domain of cross-clausal syntax and to our knowledge of the specific languages under investigation.

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