In a ;-contact representation of a planar graph G, each vertex is represented as an axis-aligned plus shape consisting of two intersecting line segments (or equivalently, four axis-aligned line segments that share a common endpoint), and two plus shapes touch if and only if their corresponding vertices are adjacent in G. Let the four line segments of a plus shape be its arms. In a c-balanced re...

1 Abstract Since the industrial revolution, standardization has become a hybrid of technical design and political processes with major impact on markets, social welfare and economic activity. Standards are increasingly developed outside government regulatory venues in consortia and other forms of voluntary consensus bodies involving collaboration among private sector competitors, suppliers, cus...

Drawing on the theory of planned behaviour, this study tests the effect of entrepreneurship programmes on the entrepreneurial attitudes and intentions of science and engineering students. This is necessary in order to confirm (or disconfirm) conventional wisdom that entrepreneurship education increases the intention to start a business. The results show that the programmes raise some attitudes ...

The Harary-Hill Conjecture states that the number of crossings in any drawing of the complete graph Kn in the plane is at least Z(n) := 1 4 ⌊ n 2 ⌋ ⌊ n−1 2 ⌋ ⌊ n−2 2 ⌋ ⌊ n−3 2 ⌋ . In this paper, we settle the Harary-Hill conjecture for shellable drawings. We say that a drawing D of Kn is s-shellable if there exist a subset S = {v1, v2, . . . , vs} of the vertices and a region R of D with the fo...

The use of the Internet for voting and other related purposes is a key area of discussion worldwide, although only touched on in a few New Zealand publications. It is seen by many as something of a panacea – a ‘technical fix’ – that might repair the falling rates of participation in democratic elections, while others are horrified that it might subvert important aspects of democracy. In order t...

This article shows the experience of applying technologies based on web 2.0 in an environment of learning at university level. Students are more and more familiar with such tools and learning at the University should be sensitive to this evolution. This tutorial 2.0 is based on two virtual environments that support and improve communication in the teaching-learning process: Moodle as an "instit...

.............................................................................................................. II ACKNOWLEDGEMENTS ..................................................................................... IV LIST OF PUBLICATIONS ...................................................................................... V TABLE OF CONTENTS ....................................................

I develop a simple model of wages set in competitive equilibrium and derive predictions regarding the response of wages when an inelastic supply of CEO labor cannot match an increase in demand. The model predicts that the CEO pay-size elasticity increases when more firms compete for a fixed supply of managers, a prediction robust to a broad class of distributions commonly used. I then empirical...

This article applies recent advances in productivity and efficiency measurement to the evaluation of skillbiased technical change. Using the general index approach we are able to establish an explicit and unconstrained time path for nonneutral technical change between production and nonproduction labor in U.S. manufacturing industries over the 1959-1996 period. Our findings confirm the prevaili...

Playing with physical construction kits (Legos, Erector sets, Fischer-Technik, etc.) is a good way to build physical intuitions and spark interest in technical fields. Construction kits for virtual artifacts could have similar benefits, with complementary advantages and disadvantages. Yet we currently do not have construction kits for virtual analogs of physical artifacts that provide the same ...