Mobile devices, increasingly equipped with high capability processors and connected with fast wireless networks, have become a major consumer of multi-media content. Limited battery life on mobile devices makes power saving a critical factor in delivering a good user experience. This paper proposes a power aware streaming system that combines the emerging High Efficiency Video Coding (HEVC) standard and the Dynamic Adaptive Streaming over HTTP (DASH) standard. The proposed system uses power aware HEVC encoding technologies and client side power adaptation logic to adaptively control power consumption on the client device. The proposed power aware HEVC streaming system can improve quality of experience by setting full-length video playback as client' s objective. Demonstration of the proposed power aware HEVC system is available on the ASUS Transformer Xfinity (TF700T) tablet using an ARM processor. Index Terms-HEVC, DASH, battery life, power saving, video streaming, video coding the information about the video being rendered, such as the decoding complexity level of the video segment, the current power dissipation rate, and remaining playback time. In the prototype implementation, instead of MP4 encapsulation, raw HEVC elementary bitstreams are used at the server side. 3. POWER A WARE ENCODING Compared to H.264/AVC, HEVC uses larger video blocks. The size of the largest video blocks, also called the coding tree blocks (CTB), is signaled in the Sequence Parameter Set (SPS). Each CTB is quadtree partitioned into coding units (CU) with variable sizes. Each CU consists of prediction units (PU) and transfonn units (TU). Complexity analyses of HEVC decoder implementations have been made available in [3] [5] ; it is reported that, in the random access encoding configuration with hierarchical B prediction [13] , typically motion compensation (MC), deblocking, and entropy decoding take about 50%, 20%, and 20% of the overall decoding time, respectively. Profiling of our HEVC decoder implementation on ARM showed similar results. Based on this observation, the power aware HEVC encoder in the proposed system considers motion compensation and deblocking when generating bitstreams with different complexity levels. In HEVC, I-D interpolation filters are applied when fractional motion vectors are used (up to 114-pel precision); the interpolation filters are 7-and 8-tap for luma and 4-tap for chroma. Depending on the fractional positions of the motion vectors, the memory size fetched for MC, number of filters applied, as well as the filter symmetry can be

Interorganizational business processes aim to integrate local processes to support the seamless cooperation of organizations. Process view approaches are an adequate method balancing the communication requirements for enabling collaboration and the required privacy hiding internals of private business processes. We focus on a top-down scenario for the development of interorganizational processes, where first an abstract global process is designed. Then each step of the global process is assigned to one of the partners and a local process is generated for each partner as a view on the global process. Finally, the partners implement or adopt their processes based on their views. We present an algorithm for the fully automatic generation of views for any block-structured input process with arbitrary partner assignments, provide a method for merging the partner's views to reconstruct the global process and prove the correctness of the view generation method.

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