We use statistical results from a large sample of about 500 blazars, based on two surveys, the Deep X-ray Radio Blazar Survey (DXRBS), nearly complete, and the RASS-Green Bank survey (RGB), to provide new constraints on the spectral energy distribution of blazars, particularly flat-spectrum radio quasars (FSRQ). This reassessment is prompted by the discovery of a population of FSRQ with spectra...

In his 1970 paper ‘Remarks on nominalization’, Noam Chomsky provided several arguments for the lexicalist hypothesis, namely the idea that nouns like refusal, rejection, growth, and so on are nouns throughout the entire syntactic derivation. Tom Roeper’s paper ‘Chomsky’s Remarks and the transformationalist hypothesis’ challenges the lexicalist hypothesis, arguing that such nouns are syntactical...

Acknowledgements I would like to express my gratitude towards my supervisor Sjouke Mauw for his support in finding a suitable project, his guidance and support during the project, and his confidence. I'm also grateful to Chess iT and my company supervisor Bert Bos in particular, for giving me the opportunity to do my research there and for allowing me the freedom to choose the direction of my r...

This work describes and evaluates TraceML, a modeling language for traceability information. Traceability is the degree to which relationships between products of a software development process can be established. Processing traceability information helps to handle the complexity of modern software development efforts and so to make software development more efficient. Up to date traceability h...

This letter will take an example from the Japanese local telecommunications industry in the 1990s and analyze the cost structures of a basic service and an advanced service, focusing on the economies of scale and scope. Here, the basic service is defined as the plain old telephone service (POTS) while the advanced service the leased circuit service. There are three points we will make: first, t...

It seems that in IT sector we are all aware that for the development of non-trivial software the use of software methods is very important. They provides as with knowledge and guidance for the development process which otherwise might become too chaotic and out of control. It has been empirically proven that software development companies which have successfully established their software proce...

As punishment in the biblical story of Moses the slaves were told they had to make bricks without straw. This was impossible because bricks made without straw had the appearance of strength and function, but could not withstand the proof of actual use. The slaves' punishment was therefore not only to make bricks, but also to find the straw on their own with which to make them. In this day and a...

Requirements and code, in conventional software engineering wisdom, belong to entirely different worlds. Is it possible to unify these two worlds? A unified framework could help make software easier to change and reuse. To explore the feasibility of such an approach, the case study reported here takes a classic example from the requirements engineering literature and describes it using a progra...

Object oriented metrics have become more important in software engineering field. They are used to measure software quality and to estimate the cost, to enhance the reliability, maintainability and effort of software projects. Object oriented metrics evaluate the complexity of OO program. Object oriented concepts are dominating the software industry and engineers need proper measuring parameter...

Graphical user interfaces (GUIs) make software easy to use by providing the user with visual controls. Therefore, correctness of GUI’s code is essential to the correct execution of the overall software. Models can help in the evaluation of interactive applications by allowing designers to concentrate on its more important aspects. This paper describes our approach to reverse engineer an abstrac...