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Computer and Systems Architecture Commons™
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Articles 61 - 69 of 69
Full-Text Articles in Computer and Systems Architecture
A Simulation Analysis Of Photovoltaic Ac Module Integrated Converters In Parallel, Under Controlled Edge Shading Conditions, Lynette O'Callaghan, Mick Mckeever, Brian Norton
A Simulation Analysis Of Photovoltaic Ac Module Integrated Converters In Parallel, Under Controlled Edge Shading Conditions, Lynette O'Callaghan, Mick Mckeever, Brian Norton
Conference Papers
A DC and AC power simulation comparison of: a Photovoltaic (PV) array with a modular, parallel, AC converter configuration; and a series, string configuration with a central AC converter, is presented. The systems are simulated using a comprehensive range of edge shading scenarios and irradiance conditions. Power control and transformation circuitry must be designed for shade and module mismatch tolerance to prevent over-proportional power to shade losses, as average losses from Building Integrated PV (BIPV) systems are approximately 20 to 25%, due to shade, mismatch, differences in orientation and inclination, and temperature effects. 59.4% of the simulations showed gains in …
Productivity Evaluation Of Self-Adaptive Software Model Driven Architecture, Basel Magableh
Productivity Evaluation Of Self-Adaptive Software Model Driven Architecture, Basel Magableh
Articles
Anticipating context changes using a model-based approach requires a formal procedure for analysing and modelling context-dependent functionality and stable description of the architecture which supports dynamic decision-making and architecture evolution. This article demonstrates the capabilities of the context-oriented component-based application-model-driven architecture (COCA-MDA) to support the development of self- adaptive applications; the authors describe a state-of-the-art case study and evaluate the development effort involved in adopting the COCA-MDA in constructing the application. An intensive analysis of the applica- tion requirements simplified the process of modelling the application’s behavioural model; therefore, instead of modelling several variation models, the developers modelled an extra-functionality …
Measuring Design Metrics In Websites, Emilio Navarro, Ronan Fitzpatrick
Measuring Design Metrics In Websites, Emilio Navarro, Ronan Fitzpatrick
Conference papers
The current state of the World Wide Web demands website designs that engage consumers in order to allow them to consume services or generate leads to maximize revenue. This paper describes a software quality factor to measure the success of websites by analyzing web design structure and not relying only on websites traffic data. It is also documents the requirements and architecture to build a software tool that measures criteria for determining Engagibility. A new set of social criteria to be measured for current website philosophy is also proposed.
Defending Privacy: The Development And Deployment Of A Darknet, Conor Mcmanamon, Fredrick Mtenzi
Defending Privacy: The Development And Deployment Of A Darknet, Conor Mcmanamon, Fredrick Mtenzi
Conference papers
New measures imposed by governments, Internet service providers and other third parties which threaten the state of privacy are also opening new avenues to protecting it. The unwarranted scrutiny of legitimate services such as file hosters and the BitTorrent protocol, once relatively unknown to the casual Internet user, is becoming more obvious. The darknet is a rising contender against these new measures and will preserve the default right to privacy of Internet users. A darknet is defined in the context of file sharing as a network which operates on top of another network such as the Internet for the purpose …
Building Organisationally Sensitive Technological Solutions For Knowledge Management In It Support Services, David Tonade
Building Organisationally Sensitive Technological Solutions For Knowledge Management In It Support Services, David Tonade
Dissertations
With the advent of the internet, information and communications technology has changed the way organisations operate and do business. There now exist an extremely dynamic and competitive business landscape, where information and knowledge are continuously created, used and distributed across business units. People have become more involved with the use of technology to aid them in their business tasks. In the course of generating and transmitting information comes the realization that knowledge is a vital asset of the company. Thus, most firms embark on various initiatives to enable Knowledge Management (KM). This study revolves around the IT tools involved in …
Optical Reading And Playing Of Sound Signals From Vinyl Records, Arnold Hensman, Kevin Casey
Optical Reading And Playing Of Sound Signals From Vinyl Records, Arnold Hensman, Kevin Casey
Conference Papers
While advanced digital music systems such as compact disk players and MP3 have become the standard in sound reproduction technology, critics claim that conversion to digital often results in a loss of sound quality and richness. For this reason, vinyl records remain the medium of choice for many audiophiles involved in specialist areas. The waveform cut into a vinyl record is an exact replica of the analogue version from the original source. However, while some perceive this media as reproducing a more authentic quality then its digital counterpart, there is an absence a safe playback system. Contact with the stylus …
Design Of A Wireless System For Patient-Hospital Communication And Result Validation In Point Of Care Testing, John Mcgrory, Owen Lynch, Eugene Coyle
Design Of A Wireless System For Patient-Hospital Communication And Result Validation In Point Of Care Testing, John Mcgrory, Owen Lynch, Eugene Coyle
Conference Papers
This paper discuses mobile phone (cell phone) and wireless applications for linking patients who manage their healthcare outside the hospital using Point of Care Testing (POCT) to hospital information systems (HIS). Certain medical conditions require patients to manage their healthcare by performing on themselves POC testing and act faithfully on the result. This raises quality control issue, as these POC samples and testing procedures are not independently overseen by professional hospital staff. In hospitals, samples taken by clinicians are validated by hi-tech computerised validation systems to ensure plausibility, before physicians rely on them. Patients in the home must often use …
An Investigation Into The Causes And Effects Of Legacy Status In A System With A View To Assessing Both Systems Currently In Use And Those Being Considered For Introduction, Patricia O'Byrne
Other resources
This dissertation analyses the area of legacy systems and determines the effects that are exhibited in legacy systems, presenting them in a legacy effect determination framework, so that management can ascertain whether the system they have is a legacy system. An analysis of legacy causal criteria is carried out, resulting in a table of legacy causes. A new definition of legacy systems is put forward, by defining legacy status as a status held by a legacy system. “A system exhibits legacy status if it is deficient in terms of its suitability to the business, its platform suitability or application software …
Software Quality: Definitions And Strategic Issues, Ronan Fitzpatrick
Software Quality: Definitions And Strategic Issues, Ronan Fitzpatrick
Reports
This paper contains two sections relating to software quality issues. First, the various definitions of software quality are examined and an alternative suggested. It continues with a review of the quality model as defined by McCall, Richards and Walters in 1977 and mentions the later model of Boëhm published in 1978. Each of McCall's quality factors is reviewed and the extent to which they still apply in the late 1990s is commented on. The factors include, integrity, reliability, usability, accuracy, efficiency, maintainability, testability, flexibility,interface facility (interoperability), re-usability and transferability (portability). They are subdivided into external and internal quality factors. Interrelationships …