When dealing with complex systems design and application the notion of ontologies helps the process of application integration. To solve the problems with discover, interpret and reuse data we have to recognize ontolo...
详细信息
When dealing with complex systems design and application the notion of ontologies helps the process of application integration. To solve the problems with discover, interpret and reuse data we have to recognize ontology as a concept that formalizes the management and integration of information, services and processes. In this paper we present our work towards the development and evaluation of scientific data ontology that helps the system integration architect achieve interoperability between different systems.
A data security and validation framework of a SOA based system for management, storage, processing and visualization of data obtained from scientific experiments is proposed in this paper. The framework covers the thr...
详细信息
A data security and validation framework of a SOA based system for management, storage, processing and visualization of data obtained from scientific experiments is proposed in this paper. The framework covers the three levels of data security: authorized user access, data encryption and data validation. To ensure authorized user access three access levels are provided: ownership, distribution rights and read rights. To ensure the data encryption an asymmetric 128-bit encrypting method based on public and private key is implemented. A universal approach for complete data validation has been suggested and implemented as web service. Data validation service allows validating the input data processed by each of the modules in the system. A declarative language defining the data validation and their interpretation based on XML standard is specified, by which precise rules in XML format are established and simultaneously with a library that supports this grammar is performed. In the language structures are included elements describing the data, rules and logic, which have to satisfy the input data. The actual definition is supported by a definition repository XML file and allows adding additional field types or complex validation logic as needed and easy modification of the validation rules.
The purpose of the automatic conversion of scientific data into canonical format is to provide a link between raw representation of data and database schemas. On the basis of these concepts Web services are developed ...
详细信息
The purpose of the automatic conversion of scientific data into canonical format is to provide a link between raw representation of data and database schemas. On the basis of these concepts Web services are developed for automatic XML description. They describe structurally and semantically scientific data and the conversion of the raw data layout description into canonical form based on data semantics. The canonical form looks like a relational data model where efficient methods for storage and retrieval of scientific data have been used. This paper describes the implementation of the converter compiler of raw scientific data layout description into canonical format. Using canonical XML form we have achieved better standardization of the input for data manipulation and visualization routines and minimization of their number.
The scientific computing manages massive amounts of very large data sets. The development of description of the format, structure and semantic content of data is essential for the automatic manipulation of data. The a...
详细信息
The paper gives an insight of the work done so far in modelling and implementation of user adapted software systems or adaptive web sites. We introduce a five layer framework which gives to our adaptive web based syst...
详细信息
The aim of this paper is to investigate the efficiency of sequence alignment. The parallel computational model is based on mpiBlast algorithm, data decomposition and manager-worker algorithmic paradigm utilizing massa...
详细信息
ISBN:
(纸本)9789604742509
The aim of this paper is to investigate the efficiency of sequence alignment. The parallel computational model is based on mpiBlast algorithm, data decomposition and manager-worker algorithmic paradigm utilizing massage passing based on MPI and is verified on the basis of flat parallel program implementation on a supercomputer BlueGene/P.
The scientific computing manages massive amounts of very large data sets. The development of description of the format, structure and semantic content of data is essential for the automatic manipulation of data. The a...
详细信息
ISBN:
(纸本)9781424467280;9780769540221
The scientific computing manages massive amounts of very large data sets. The development of description of the format, structure and semantic content of data is essential for the automatic manipulation of data. The aim of this paper is to define an XML-based language for describing the structure, semantic and annotation of scientific data. The XML Schema and the Document Type Definitions (DTDs) that implement the abstract format are provided. The proposed language describes the structure, semantic and annotation of the scientific data from experiments and simulations.
This paper is dealing with redundant optoelectronic data transmission with special respect to laser channels. The concept of the generalized erasure channel (GEC) is used to determine the probability of undetected err...
详细信息
This paper is dealing with redundant optoelectronic data transmission with special respect to laser channels. The concept of the generalized erasure channel (GEC) is used to determine the probability of undetected error for some binary symmetric and non-symmetric channels protected by appropriate codes. In detail, communication via different binary symmetric channels (BSCs), generalized erasure channels and symmetrized binary non symmetric channels (BNSCs) is investigated. Simple upper bounds are given, relating the new formulas to that one of the BSC Finally the results in connection with an inequality for proper codes are applied to multi wavelength optical transmission through channels generated by semiconductor lasers.
We present novel concepts, technologies and potentials of optical data communication, especially for future computer architectures. The WDM (wavelength division multiplexing) and the optical wiring technologies are ex...
详细信息
We present novel concepts, technologies and potentials of optical data communication, especially for future computer architectures. The WDM (wavelength division multiplexing) and the optical wiring technologies are explained in detail. Experimental results of tunable optical filters, which play a major role in WDM systems, are reported. New concepts for novel optical interconnectors and novel miniaturized lasers for direct generation of green light are proposed as examples for possible next generation components to improve the performance of optical communication based computer architecture.
In this paper, the performance of turbo coded signals are investigated over a new channel model, denoted as 1/spl plusmn/D/sup n//Partial Response Fading Channels (PRFC) with imperfect phase reference. The combined ef...
详细信息
In this paper, the performance of turbo coded signals are investigated over a new channel model, denoted as 1/spl plusmn/D/sup n//Partial Response Fading Channels (PRFC) with imperfect phase reference. The combined effects of the 1/spl plusmn/D/sup n//PRFC and nonideal coherent receiver on the phase of the received amplitude and of a noisy carrier reference are considered. The numerical results demonstrate the error performance degradation due to both amplitude fading and phase noise process.
暂无评论