Against the new challenges for data management and service architecture due to the evolution of “big data”, the problems of scientific domain “big data” management, reuse and on-demand services must be solved. In this paper, we propose an Open Cloud Service Architecture (OCSA) based on the joint building of materials Virtual DataSpace (VDS), Requirement Space (RS) model and Behavior Space (BS) ...

Cloud storage service providers such as Dropbox, Mozy, and others perform deduplication to save space by only storing one copy of each file uploaded. Should clients conventionally encrypt their files, however, savings are lost. Message-locked encryption (the most prominent manifestation of which is convergent encryption) resolves this tension. However it is inherently subject to brute-force att...

In this paper, design of framework architecture of pervasive computing system providing seamless inter space interactions between private and public smart spaces is presented. The seamless inter space interaction issues are related to establishing user’s service environment by allocating relevant resources in a new location where there are no prior settings for the user or where there are curre...

Wireless sensor and actuator network is the key technology of service robot intelligent space. This paper is concerned with design and implementation of a ZigBee based wireless sensor and actuator network (hereinafter referred to as ZWSAN), which has been applied in our service robot intelligent space successfully. Firstly, a simplified ZigBee stack applied to ZWSAN is proposed and the primitiv...

Web services have acquired enormous popularity among software developers. This popularity has motivated developers to publish a large number of Web service descriptions in UDDI registries. Although these registries provide search facilities, they are still rather difficult to use and often require service consumers to spend too much time manually browsing and selecting service descriptions. Thi...

Service Oriented Architecture facilitates automatic execution and composition of web services in distributed environment. This service composition in the heterogeneous environment may suffer from various kinds of service failures. These failures interrupt the execution of composite web services and lead towards complete system failure. The dynamic recovery decisions of the failed services are d...

Cloud computing has been popular as the IT architecture. Cloud service providers offer many services based on cloud computing. Cloud storage service is the cloud services which can provide a huge storage space to solve the bottleneck of the storage space of local end users. However, cloud storage service may have data security because the users’ data is not stored in their own storage. In this ...

Due to the advent of service oriented architecture, web services have gained popularity. The need for efficient web service discovery increases because of the enormous growth of the web services. The main concern of this paper is to addresses the challenge of automated web service discovery and service similarity assessment. It utilizes the WordNet and a traditional information retrieval method...

Virtual service is a bit of an oxymoron. After all, an organization either provides service to customers or not. It may be good service or bad, but it is still service. Of course the reason we qualify any term with digital, virtual, or electronic is to distinguish it from what many libraries have done in a physical space, or within the confines of geography. Some say the ultimate success of a "...

Overview • The Object Space Approach: object-oriented essentials and decoupled communication. • Example: a distributed time service. • A distributed protoypical implementation of Object Space. • Employing replication and optimistic asynchrony: a more efficient implementation.