In such a competitive world, quality assurance can make the difference between a successful business and bankruptcy. For Internet services, the presence of low performance servers, high latency or overall poor service quality can translate into lost sales, user frustration and customers lost. In this paper, we propose a novel method for QoS metrification based on Hidden Markov Models. The techn...

Software variability has received research attention. However, only a few studies address the issue of quality attribute variability within software product families. This paper describes the ongoing research on quality attribute variability within a software product family architecture. We motivate the research topic by identifying three different situations in which quality attributes may var...

Why has there been so little progress in the quantitative evaluation of those quality attributes concerned with software design? This paper seeks to provide an answer by arguing that progress is dependent on the adoption of a programme of cumulative empirical research. Such a programme consists of original empirical research, independent replication to investigate and verify original results, a...

The Smart Grid intends to provide good power quality, energy cost reduction and improve the reliability of the electricity Grid. Electricity Grids exist across a wide hierarchy of voltages and spatial scales. In this paper we particularly investigate the deployment of monitoring systems in the urban environment, specifically in a university campus that is embedded in a city. Monitoring at this ...

Unlike the integration of geospatial data that deals with different geometric expressions, resolutions and actualities etc., integrating different domain datasets associated with the same geo-reference must consider additionally the specific domain knowledge and models. A number of spatial reference datasets and multidisciplinary datasets are selected as test examples. An analysis of data quali...

Traditional color appearance modeling has recently matured to the point that available, internationally-recommended models such as CIECAM02 are capable of making a wide range of predictions to within the observer variability in color matching and color scaling of stimuli in somewhat simplified viewing conditions. It is proposed that the next significant advances in the field of color appearance...

The national western spatial data quality check method based on entity and evaluation method based on the cloud theory and rough set have been put forward according to the National Western Surveying and Mapping Project on 1:50000 Topological Maps Blank Area. In the first place, national western spatial data quality problem is analyzed and possible quality problems are described. Secondly, a dig...

Coal quality-tonnage curves are helpful tools in optimum mine planning and can be estimated using geostatistical simulation methods. In the presence of spatially cross-correlated variables, traditional co-simulation methods are impractical and time consuming. This paper investigates a factor simulation approach based on minimization of spatial cross-correlations with the objective of modeling s...

introduction one of the critical issues associated with sustainability in the twenty-first century is how cities are growing and developing in the space. rapid urban growth and physical development of cities cause disintegration of the spatial organization of cities and consequently spatial inequality between urban spaces. this phenomenon can be considered as spatial segregation or fragmentatio...