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Quality of service is important for real-time streaming multimedia applications such as voice over IP, multiplayer online games and IPTV, since these often require fixed bit rate and are delay sensitive. Quality of service is especially important in networks where the capacity is a limited resource, for example in cellular data communication.
Perceived Quality: the quality attributed to a good or service based on indirect measures. Some of the dimensions are mutually reinforcing, although others are not: improvement in one may be secured at the expense of others. Understanding the trade-offs desired by customers among these dimensions can help build a competitive advantage.
A five-level scale for rating quality. Absolute Category Rating (ACR) is a test method used in quality tests. [1] [2] The levels of the scale are, sorted by quality in decreasing order: Excellent; Good; Fair; Poor; Bad; In this method, a single test condition (generally an image or a video sequence) is presented to the viewers once only.
The model of service quality. The model of service quality or the gaps model as it is popularly known, was developed by team of researchers, Parasuraman, Zeithaml and Berry, in the mid to late 1980s. [100] and has become the dominant approach for identifying service quality problems and diagnosing their probable causes. [101]
Service quality (SQ), in its contemporary conceptualisation, is a comparison of perceived expectations (E) of a service with perceived performance (P), giving rise to the equation SQ = P − E. [1] This conceptualistion of service quality has its origins in the expectancy-disconfirmation paradigm.
Levels of service (LOS) is a term in asset management referring to the quality of a given service. Defining and measuring levels of service is a key activity in developing infrastructure asset management plans. [2] [3] [4] Levels of service may be tied to physical performance of assets or be defined via customer expectation and satisfaction.
Business requirements in the context of software engineering or the software development life cycle, is the concept of eliciting and documenting business requirements of business users such as customers, employees, and vendors early in the development cycle of a system to guide the design of the future system.
Quality Control is the ongoing effort to maintain the integrity of a process to maintain the reliability of achieving an outcome. Quality Assurance is the planned or systematic actions necessary to provide enough confidence that a product or service will satisfy the given requirements.