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Multifrequency Test and Diagnosis of Analog Circuits Using Constraint Programming and Interval Arithmetic

Analog circuits are often specified using non-linear equations, which are difficult to analyze. Therefore, test generation and diagnosis are problematic issues in practice. In this paper we propose a new method for diagnosis of analog circuits that uses combined information from tests at different frequencies. By solving simultaneously the resulting equations (one for each test frequency), we get

Time-domain wave splitting of Maxwell's equations

Wave splitting of the time dependent Maxwell's equations in three dimensions with and without dispersive terms in the constitutive equation is treated. The procedure is similar to the method developed for the scalar wave equation except as follows. The up-and down-going wave condition is expressed in terms of a linear relation between the tangential components of E and H. The resulting system of d

Maximizing Level of Confidence for Non-Equidistant Checkpointing

To combat the increasing soft error rates in recent semiconductor technologies, it is important to employ fault tolerance techniques. While these techniques enable correct operation, they introduce a time overhead, which may cause a deadline violation in real-time systems (RTS). Since correct operation for RTS is defined as producing correct outputs while satisfying time constraints (deadlines), i

Gendered Effects of NERICA Upland Rice – The Case of Labor Dynamics in Hoima District, Uganda

The new NERICA upland rice varieties were developed in Africa for Africa so as to address the continental-wide rice cereal challenge, poverty and food insecurity. To date, the ‘success’ of the dissemination of NERICA amongst smallholder farmers has mainly been established econometrically by measuring production growth or household income gain. This type of analysis allows for capturing shifts in i

The Case for Batch Merge of Models – Issues and Challenges

Modelling is a fairly mature technology that is already being adopted by industry. Unfortunately the tools for supporting Model-Driven Engineering are not at the same level of maturity. In particular merge tools that are an important help for collaboration lack a lot to be desired in providing the support that is needed on industrial projects. Current model merge tools and research approaches focu

Inflation Targeting Is a Success, So Far: 100 Years of Evidence from Swedish Wage Contracts

We evaluate the Swedish inflation targeting regime adopted in 1993-1995 using a novel approach based on a unique data set on the characteristics of collective wage agreements between 1908 and 2008. We find that the inflation targeting regime of 1995-2008 stands out as an exceptionally stable policy regime as judged by the willingness of wage contract-makers to repeatedly commit to three-year non-i