I develop a multi-country multi-industry model of trade that features heterogeneous consumers with non-homothetic preferences. I use the model to quantify the measurement errors in the welfare gains estimates caused by the assumption of a representative consumer (ARC). First, I reduce the world level of all trade costs by 15% and find that ARC overestimates (underestimates) the gains of the poo...

Multivariate statistical techniques such as cluster analysis, multidimensional scaling and principal component analysis were applied to evaluate the temporal and spatial variations in water quality data set generated for two years (2008-2010) from six monitoring stations of Veli-Akkulam Lake and compared with a regional reference lake Vellayani of south India. Seasonal variations of 14 differen...

This paper describes a method for learner modelling for use within simulation-based learning environments. The goal of the learner modelling system is to provide the learner with advice on discovery learning. The system analyzes the evidence that a learner has generated for a specific hypothesis, assesses whether the learner needs support on the discovery process, and the nature of that support...

As a response to a number of notable contemporary aesthetic tendencies, this paper introduces the notion of an infrainstrument as a kind of ‘new interface for musical expression’ worthy of study and systematic design. In contrast to hyper-, metaand virtual instruments, we propose infra-instruments as devices of restricted interactive potential, with little sensor enhancement, which engender sim...

This paper describes one approach for calculating the cohomology of a particular complex which arises in knot theory and which is used to prove the existence of ‘associators’, a key ingredient in the construction of a universal knot invariant. The approach taken is to show that the relevant complex can be interpreted, essentially, as the cohomology of the functor Hom(K, C), where C is the coalg...

Learner preferences of students have been analysed within two modules that have been given in the department of media using Röll’s learner preference model. A qualitative analysis of the results of an online learner preference test based on this model has been conducted. This analysis showed that for the majority of the students the revealed results were valid. Starting from current methods use...

This paper presents the approach of the Glocal European funded project towards the co-production of news on World events, on an information marketplace involving both amateurs and professionals. It discuss the rise of user-generated content amongst worldwide media and how event modelling and technology usage may help to foster this pro-am collaboration. Glocal: Event-based Retrieval of Networke...

We propose a two-stage process to explain the relationship between the local news environment and citizen engagement. Our original content analysis of newspaper coverage in every US House district during the 2010 midterms reveals that districts with uncompetitive races and those served by large-circulation outlets see significantly less, and less substantive, coverage than hotly contested distr...

The human ability to express and recognize emotions plays an important role in face-to-face communication, and as technology advances it will be increasingly important for computer-generated avatars to be similarly expressive. In this paper, we present the detailed development process for the Lifelike Responsive Avatar Framework (LRAF) and a prototype application for modeling a specific individ...

Using a certification procedure for Abel-type sums, we present a computerized proof of Abel’s identity. Abel’s identity [1],[2] can be proved in many ways, including the elegant combinatorial methods of [3]. Here we present the first computer-generated proof using the methods introduced in [4]. Theorem([1]; [2], p.128). For n ≥ 0: