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Component Technologies (component + technology)

Distribution by Scientific Domains

Information Science and Computing	50%

Selected Abstracts

A component-based approach to online software evolution

JOURNAL OF SOFTWARE MAINTENANCE AND EVOLUTION: RESEARCH AND PRACTICE, Issue 3 2006
Qianxiang Wang
Abstract Many software systems need to provide services continuously and uninterruptedly. Meanwhile, these software systems need to keep evolving continuously to fix bugs, add functions, improve algorithms, adapt to new running environments and platforms, or prevent potential problems. This situation makes online evolution an important issue in the field of software maintenance and evolution. This paper proposes a component-based approach to online software evolution. Nowadays component technology has been widely adopted. Component technology facilitates software evolution, but also introduces some new issues. In our approach, an application server is used to evolve the application, without special support from the compiler or operating system. The implementation and performance analysis of our approach are also covered. Copyright © 2006 John Wiley & Sons, Ltd. [source]

A geomatics data integration technique for coastal change monitoring

EARTH SURFACE PROCESSES AND LANDFORMS, Issue 6 2005
J. P. Mills
Abstract This paper reports research carried out to develop a novel method of monitoring coastal change, using an approach based on digital elevation models (DEMs). In recent years change monitoring has become an increasingly important issue, particularly for landforms and areas that are potentially hazardous to human life and assets. The coastal zone is currently a sensitive policy area for those involved with its management, as phenomena such as erosion and landslides affect the stability of both the natural and the built environment. With legal and financial implications of failing to predict and react to such geomorphological change, the provision of accurate and effective monitoring is essential. Long coastlines and dynamic processes make the application of traditional surveying difficult, but recent advances made in the geomatics discipline allow for more effective methodologies to be investigated. A solution is presented, based on two component technologies , the Global Positioning System (GPS) and digital small format aerial photogrammetry , using data fusion to elim-inate the disadvantages associated with each technique individually. A sparse but highly accurate DEM, created using kinematic GPS, was used as control to orientate surfaces derived from the relative orientation stage of photogrammetric processing. A least squares surface matching algorithm was developed to perform the orientation, reducing the need for costly and inefficient ground control point survey. Change detection was then carried out between temporal data epochs for a rapidly eroding coastline (Filey Bay, North Yorkshire). The surface matching algorithm was employed to register the datasets and determine dif-ferences between the DEM series. Large areas of change were identified during the lifetime of the study. Results of this methodology were encouraging, the flexibility, redundancy and automation potential allowing an efficient approach to landform monitoring. Copyright © 2005 John Wiley & Sons, Ltd. [source]

Large-scale gasification-based coproduction of fuels and electricity from switchgrass

BIOFUELS, BIOPRODUCTS AND BIOREFINING, Issue 2 2009
Eric D. Larson
Abstract Large-scale gasification-based systems for producing Fischer-Tropsch (F-T) fuels (diesel and gasoline blendstocks), dimethyl ether (DME), or hydrogen from switchgrass , with electricity as a coproduct in each case are assessed using a self-consistent design, simulation, and cost analysis framework. We provide an overview of alternative process designs for coproducing these fuels and power assuming commercially mature technology performance and discuss the commercial status of key component technologies. Overall efficiencies (lower-heating-value basis) of producing fuels plus electricity in these designs ranges from 57% for F-T fuels, 55,61% for DME, and 58,64% for hydrogen. Detailed capital cost estimates for each design are developed, on the basis of which prospective commercial economics of future large-scale facilities that coproduce fuels and power are evaluated. © 2009 Society of Chemical Industry and John Wiley & Sons, Ltd [source]

,Learning hospitals' and quality

KNOWLEDGE AND PROCESS MANAGEMENT: THE JOURNAL OF CORPORATE TRANSFORMATION, Issue 4 2003
Anastasius Moumtzoglou
In the next generation of management thinking, we must go beyond TQM and on to Deming's theory of profound knowledge, much of which is embodied in the field of organizational learning and in particular, in Senge's ,Fifth Discipline' or systems thinking. In this framework there is no explicit mention of quality but the goal is still a process of ongoing improvement, that is, quality is implicitly treated. Hospitals are thought to be pretty complex organizations to implement Senge's theory because they are hierarchical, skills intensive and most health care workers deal with their emotions, patient's emotions, doctor's emotions and fellow employee's emotions in highly intense situations. However, Senge's five ,component technologies' provide an excellent framework to begin with. Copyright © 2003 John Wiley & Sons, Ltd. [source]

A component-based approach to online software evolution

Increased competitiveness through component technology for element management systems

BELL LABS TECHNICAL JOURNAL, Issue 3 2003
Alan J. McBride
Element management represents a necessary cost associated with all network devices. Isolated development of element management systems (EMSs) for diverse network device products results in replication of effort on common low-level aspects. This effort spent re-inventing the wheel affects cost-effectiveness and drains resources from features that reduce customer cost of ownership and operation. Reduced cost of EMS development and reduced operations expenditure for the customer can significantly contribute to competitiveness of the managed device itself. The Navis® element management framework (EMF) program addresses the cost-effectiveness of EMS development through a platform approach utilizing a components architecture and Bell Labs software tools together with high-productivity technologies such as J2EE*/EJB,* XML, Java,* and CORBA.* Use of a platform for aspects common across EMSs allows each development to focus on product-specific value-added features, while also facilitating common look-and-feel and integration of EMS products with current and next-generation operations support systems (OSSs) for seamless end-to-end network and service management. The benefits to service providers include faster time-to-market for new services and reduced training and integration costs. © 2003 Lucent Technologies Inc. [source]