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In this paper, we outline the challenges we have encountered in mission critical system development projects based on public tendering processes and list reasons why the challenges we have faced are difficult to tackle. Furthermore, based on our experienc-es in the mission critical system provision domain, we see that the software-as-a-service (SaaS) model saves us from many of the shortcomings of...
In the last decade, NAND flash-based SSDs have been widely adopted for high-end enterprise systems in an attempt to provide a high-performance and reliable storage. However, inferior performance is frequently attained mainly due to the need for Garbage Collection (GC). GC in flash memory is the process of identifying and clearing the blocks of unneeded data to create space for the new data to be allocated...
Cloud Computing is a Service Delivery Mechanism. Computing resources are delivered as a service over the network. These services are Scalable, Autonomous, and Cost effective in nature. Cloud Computing is responsible for the exponential growth of IT Industry. In spite of having so many advantages it has various security challenges that cannot be ignored. In order to make the Cloud Computing all the...
The increasing number of people using social media to express their personal experiences has led to an emerging interest in supporting social media analysis for marketing, opinion analysis and understanding community cohesion. Social customer relationship management (SCRM) systems have become an interesting research area. Generally analysis needs to be done on large volumes of data (Big Data) in an...
Although critical for delivering resilient, secure, efficient, and easily changed IT systems, cross-technology, cross layer quality defect detection in IT systems still faces hurdles. Two hurdles involve the absence of an absolute target architecture and the difficulty of apprehending multi-component anti-patterns. However, Static analysis and measurement technologies are now able to both consume...
Integration of hospital information systems (HIS) is an important area and one the basic requirements of hospitals since it increases quality of care and at the same time reduces costs of creating, upgrading, updating and keeping up with technology and healthcare industry standards and information technology. Cloud computing with features like multitenancy, massive scalability, elasticity, pay as...
The resiliency problem of die-stacked memory will become important because of its lack of serviceability. This article details how to provide practical and cost-effective reliability, availability, and serviceability support for die-stacked DRAM cache architectures. The proposed approach can provide varying levels of protection, from fine-grained single-bit upsets to coarser-grained faults within...
A failure modes and effects analysis is a methodology for analysis of potential failure modes within a system which includes the classification of the failure modes severity and impact on the system. Most organizations stop at the completion of the FMEA and assume that the work is done and a solid design will now be created. It is not always the case. There is a significant amount of work that needs...
Most of the e-government projects fail. The unreliability in e-government system is very high. There are many reasons for failure but among them lack of interoperability is one of them. The interoperability is one of the prime features of electronic government system. It helps one system to interact with another system. It integrates all the required entities in the common domain. Enterprise architecture...
We present a practical, systematical method for the evaluation of the soft error rate (SER) of microelectronic devices. Existing methodologies, practices and tools are integrated in a common approach while highlighting the need for specific data or tools. The showcased method is particularly adapted for evaluating the SER of very complex microelectronic devices by engineers confronted to increasingly...
Due to the increasing complexity of Web systems, security testing is becoming a critical activity to guarantee the respect of such systems to their security requirements. To challenge this issue, we rely in this paper on model based active testing. We first specify the Web system behavior using IF formalism. Second, we integrate security rules -modeled in Nomad language- within this IF model using...
A proposed grid middleware system includes specific enhancements to support the development and assessment of highly secure, dependable, service-oriented grid systems and applications. Service-oriented architectures can be defined as application architectures "within which all functions are defined as independent services.
The UNICORE grid system provides a seamless, secure and intuitive access to distributed grid resources. In recent years, UNICORE 5 is used as a well-tested grid middleware system in production grids (e.g. DEISA, D-Grid) and at many supercomputer centers world-wide. Beyond this production usage, UNICORE serves as a solid basis in many European and International research projects and business scenarios...
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