Over the last several years the COTS products have drastically changed the landscape for systems integrators. No longer do integrators create a system and then support that same system without any major changes for longer periods of time. Rather, integrators must constantly evaluate new technologies and monitor their existing architectures to determine how cutting edge technologies affect the c...

Knowledge maintenance is imperative if knowledge-based applications are to be kept functional throughout their lifecycle. Our iCAM system uses constraint-based reasoning to carry out knowledge maintenance in the domain of hospital material management. In this paper, we present two extensions to this system. The first is the application of the constraint hierarchy formalism to represent prioriti...

Over the years, we have developed IT best practices for each stage of the PC lifecycle. These best practices enable us to deliver increasing business value to the company. Executive Overview To deliver improved services and invest resources in new infrastructure and business capabilities, Intel IT has streamlined our PC lifecycle management processes, boosting both employee productivity and IT ...

This study’s goal is to investigate impediments to successful enterprise system (ES) implementation across the system lifecycle. Drawing from the opinions of 82 ES practitioners and building on the authors’ previous work on source problems in ES adoption, this study performs the further data analysis incorporating the ES lifecycle. The analysis employs the Cooper and Zmud’s six-stage model of I...

In a petabyte-scale file system, metadata access performance and scalability will significantly affect the whole system’s performance and scalability. We present a new approach called Dynamic Hashing (DH) for metadata management. DH introduces the RELAB (RElative LoAd Balancing) strategy to adjust the metadata distribution when the workload changes dynamically. Elasticity strategy is proposed t...

Many applications require similarity query processing. Most existing work took an algorithmic approach, developing indexing structures, algorithms, and/or various optimizations. In this work, we choose to take a different, systems-oriented approach. We describe the support for similarity queries in Apache AsterixDB, a parallel, open-source Big Data management system for NoSQL data. We describe ...

Abstract Digital Twin technology has been widely applied in various industry domains. Modern industrial systems are highly complex consisting of multiple interrelated systems, subsystems and components. During the lifecycle an system, digital twin models might be created related to different domains phases. The integration these relevant is crucial for creating higher-level intelligent systems....

Integrating and managing complex enterprises requires understanding, partitioning and simplification of the complexity. Enterprise modelling supports these requirements by providing means for describing process oriented systems and decomposing them intla manageable parts. However, enterprise modelling requires both a common modelling language and a methodology. The language provides common unde...