Explicit Chern Cycles in BGL and KV-theory

Using determinantal schemes, we construct explicit cycles in the higher Chow complex of BGL that represent the universal Chern classes in higher Chow groups. As an application, we use these cycles, along with a canonical \emph{stable moving lemma} for Karoubi-Villamayor $K$-theory, to give a direct construction of the Chern class homomorphisms $c_{p,r}$ from the r-th KV group of a regular k-algebra over a field $k$, to the higher Chow group $CH^p(Spec(R),r)$.