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The criterion for choosing the method to estimate measurand values when repeated measurements are performed is not clearly addressed in the Guide to the Expression of Uncertainty in Measurement (GUM). In the authors' opinion, this is due to the lack of a clear and univocal distinction between the concepts of definitional and acquisition uncertainty. In(More)
Against the tradition, which has considered measurement able to produce pure data on physical systems, the unavoidable role played by the modeling activity in measurement is increasingly acknowledged, particularly with respect to the evaluation of measurement uncertainty. This paper characterizes measurement as a knowledge-based process and proposes a(More)
In this paper, we discuss basic issues related to measurements performed in the domains of software engineering and metrology. Similarities and differences are highlighted, with the aim of analyzing the level of knowledge in both domains. A theoretical approach is followed, allowing the proposal of a measurement process model, which is used as a guiding(More)
Digital Do-It-Yourself (“DiDIY” for short) stands at the intersection of maker and hacker cultures, nourished in their turn by the DIY (Do-it-yourself) practices. In this paper, we briefly introduce these historical phenomena, which flow in the stream of subculture to the present days. We outline DiDIY as a complex mingling, involving social, cultural,(More)
− The paper analyzes the concept of accuracy, and the related ones of trueness and precision, as aimed at characterizing the behavior of measurement processes, and highlights how such concepts, as currently defined by some relevant standards, should be reformulated to guarantee their consistency. Finally, some preliminary suggestions are proposed to this(More)
In recent years, data sets are steadily growing in size because of the huge sensing, storage, computation, and transmission capabilities offered at very low cost by current Information Technology systems, which are increasingly driving ubiquitous data acquisition from the empirical world. Moreover, massive amounts of data can be collected very efficiently-(More)
This chapter analyzes the reciprocal influences between various teaching methodolo-gies supported by information and communication technology (ICT) and the teaching objectives that are pursued by means of these methodologies. The authors present the main characteristics of the conceptual model which has led to the definition of the teaching objectives and(More)
The concept system around ‘quantity’ and ‘quantity value’ is fundamental for measurement science, but some very basic issues are still open on such concepts and their relations. This paper proposes a duality between quantities and quantity values, a proposal that simplifies their characterization and makes it consistent.