Dimensional analysis is widely used in physics and engineering to contribute to modeling systems in which variables are measured in incompatible units. I used dimensional analysis to rank the airlines in overall quality based on US Department of Transportation data: on-time arrivals, denied boardings, mishandled baggage, and customer complaints. The results conflict with the well-known airline ...

This paper summarizes the state of affairs of the doctoral research. Different views of the concept of quality are examined, e.g. product-based, userbased or manufacturing-based view. Finally, the term quality of service is discussed in consideration to web service compositions.

The quality, certainty, or confidence of decisions made during the visual analytics process depends on many factors, including the completeness and reliability of the initial data, information loss due to filtering, sampling, and other transformations, and the accuracy and clarity of the visual presentation. Unfortunately, in most visualization tools the analyst is unaware of these and other fo...

Several of the more commonly used triangle quality measures are analyzed and compared. Proofs are provided to verify that they do exhibit the expected extremal properties. The asymptotic behavior of these measures is investigated and a number of useful results are derived. It is shown that some of the quality measures are equivalent, in the sense of displaying the same extremal and asymptotic b...

Process capability indices are widely regarded as a flexible means of evaluating the quality and performance of a process. Accreditation by the Quality System Requirement QS9000 requires an agent to conduct a global evaluation on the process capability over the entire product family from a plant. Generally, the process capability of the whole product family is an important reference for evaluat...

Case study in section 6 was removed because it is confidential 2 Case study in section 6 was removed because it is confidential Case study in section 6 was removed because it is confidential 4 Case study in section 6 was removed because it is confidential Abstract: The research project SIKOSA is funded by the Ministery for Science, Research and Art of Baden-Württemberg, Germany (Ministerium für...

Surface-enhanced laser desorption/ionization time of flight mass spectrometry (SELDI TOF-MS) studies have claimed significant success in identifying biomarkers with higher sensitivity and specificity for detecting disease than currently available diagnostic methods (1–3). While these studies demonstrated great promise, the quality of SELDI spectra was not evaluated systematically until two year...

The ability to efficiently send and receive high-quality multimedia over unreliable networks has become essential. Compressed video bit streams suffer from bit error and packet loss during transport over these different network types. The MPEG-4 standard was developed with error-resilient video coding techniques to help prevent these types of errors and recover from them when they occur. Despit...

Most empirical analyses of human capital have concentrated solely on the quantity of schooling attained by individuals, ignoring quality differences. This focus contrasts sharply with policy considerations that almost exclusively consider school quality issues. This paper presents basic evidence about the very substantial impacts of school quality on individual earnings and on economic growth. ...