Abstract— Hierarchical Distributed Hash Table (DHT) architectures have been among the most interesting research topics since the birth of flat DHT architecture. However, most of the previous work has merely focused on the two-tier hierarchy. In this paper, we study and analyze General Truncated Pyramid Peer-to-Peer (GTPP) architecture, the generalized version of Partially Vertical Hierarchical ...

A hierarchical control architecture for mission re-planning of autonomous underwater vehicle (AUV) navigating in uncertain ocean environment is presented in this paper. The proposed componentoriented control architecture structured is made of three parts: situation reasoning, re-planning trigger and hierarchical re-planning layer. Situation reasoning using the unstructured real-word information...

With the advance of web technologies, a large quantity of transactions have been processed through web services. Service Provider needs encryption via public communication channel in order that web services can be delivered to Service Requester. Such encryptions can be realized using secure session keys. Traditional approaches which can enable such transactions are based on peer-to-peer archite...

Both hierarchical and unstructured (Peer-to-Peer or P2P) architectures can be used to construct a Grid information service (GIS) and the selection of the architecture is a factor affecting the performance of the GIS. In this paper, we have investigated and compared the performance between these two GIS architectures. We describe a P2P GIS architecture based on unstructured multi-source multicas...

Hierarchical block matching is an eecient motion estimation technique which provides an adaptation of the block size and the search area to the properties of the image. In this work, we propose two novel special-purpose architectures to implement hierarchical block matching for real-time applications. The rst architecture is memory-eecient, but requires a large external memory bandwidth and a l...

The reflexion model originally proposed by Murphy and Notkin allows one to structurally validate a descriptive or prescriptive architecture model against a source model. First, the entities in the source model are mapped onto the architectural model, then discrepancies between the architecture model and source model are computed automatically. The original reflexion model allows an analyst to s...

A Scalable hierarchical architecture based Code-Division Multiple Access (CDMA) is proposed for high performance Network-on-Chip (NoC). This hierarchical architecture provides the integration of a large number of IPs in a single on-chip system. The network encoding and decoding schemes for CDMA transmission are provided. The proposed CDMA NoC architecture is compared to the conventional archite...

A software architecture specification plays a critical role in software development process. SAM is a general framework for developing and analyzing software architecture specifications. SAM supports the scalability of architectural descriptions through hierarchical decomposition and the dependability analysis of architectural descriptions using a dual formalism based on Petri nets and temporal...

To provide hierarchical description from different software architectural view points we need more than one abstraction hierarchy and connection mechanisms to support the interactions among components. Also, these mechanisms will support the refinement and traceability of architectural elements through the different levels of each hierarchy. Current methods and tools provide poor support for th...

To provide hierarchical description from different software architectural viewpoints we need more than one abstraction hierarchy and connection mechanisms to support the interactions among components. Also,ion hierarchy and connection mechanisms to support the interactions among components. Also, these mechanisms will support the refinement and traceability of architectural elements through the...