The three aims of this paper are to obtain the proof by Dress of the completeness of the enumeration of the Grünbaum–Dress polyhedra (that is, the regular apeirohedra, or apeirotopes of rank 3) in ordinary space E3 in a quicker and more perspicuous way, to give presentations of those of their symmetry groups which are affinely irreducible, and to describe all the discrete regular apeirotopes of...

Three edges e1, e2 and e3 in a graph G are consecutive if they form a path (in this order) or a cycle of length three. An injective edge coloring of a graph G = (V,E) is a coloring c of the edges of G such that if e1, e2 and e3 are consecutive edges in G, then c(e1) 6= c(e3). The injective edge coloring number χ ′ i(G) is the minimum number of colors permitted in such a coloring. In this paper,...

This paper discusses the optimal firm size in the presence of internal rent seeking. Since firm size has a discouragement effect on the level of individual rent-seeking but also a quantity effect as the number of rent-seekers increases, the interplay of both effects — together with technological considerations — determines whether the employer chooses an inefficiently small or large firm size. ...

This paper considers the effects of rent control on community socioeconomic composition. In particular, do rent controls increase the presence of poor and minority residents in a locale? Theoretically, the effect of rent controls on community composition depends on a tradeoff between lower prices which might favor the disadvantaged and a landlord imposed rationing mechanism which likely does no...

RING ubiquitin E3 ligases enclose a RING domain for ubiquitin ligase activity and associated domains and/or conserved motifs outside the RING domain that collectively facilitate their classification and usually reveal some of key information related to mechanism of action. Here we describe a new family of E3 ligases that encodes a RING-H2 domain related in sequence to the ATL and BTL RING-H2 do...

Developing technological applications, entering exploitation alliances, and choosing between a researchor service-focused strategic orientation are decisions that high-tech firms must manage concurrently. This paper explores systematically the contrasting effects of these strategic determinants on rent-generation and rent-appropriation using the entire population of French biotech firms (1994-2...

Neoclassical economists argue that competition promotes efficiency. They consider technology as given though. In the long run technological progress is an important determinant of the level of welfare and Schumpeter argued that monopoly rents help entrepreneurs to capture the gains of R&D and hence to invest in it. We investigate the overall effect of competition on performance. Performance is ...