The well known isomorphism relating the rational algebraic K-theory groups and the rational motivic cohomology groups of a smooth variety over a field of characteristic 0 is shown to be realized by a map (the “Segre map”) of infinite loop spaces. Moreover, the associated Chern character map on rational homotopy groups is shown to be a ring isomorphism. A technique is introduced which establishe...

Extraction of map objects such as roads, railroads, rivers and building boundaries from 1m resolution space images is one of the important research issue. Automation of this task is crucial for the success of the application but full and reliable automation is yet to be achieved. This paper describes the development of algorithms to extract two major map objects, roads and buildings. We adopt t...

We consider the task of obtaining the maximum a posteriori estimate of discrete pairwise random fields with arbitrary unary potentials and semimetric pairwise potentials. For this problem, we propose an accurate hierarchical move making strategy where each move is computed efficiently by solving an st-MINCUT problem. Unlike previous move making approaches, e.g. the widely used α-expansion algor...

In this thesis, a study on gene expression data analysis is done using some supervised, unsupervised and semi-supervised approaches. The task of class prediction for six gene expression datasets (namely, Brain Tumor, Colon Cancer, Leukemia, Lymphoma and SRBCT) has been carried out. Here, a one-dimensional self-organizing feature maps (SOFM) in a semi-supervised learning framework is developed f...

We prove that the canonical Thurston obstruction for a sub-hyperbolic semi-rational branched covering exists if the branched covering is not CLH-equivalent to a rational map.

The main purpose of this paper is to prove the metrizability of semi-aposyndetic continuum X which admits a Whitney map for C(X).

Cartographers often need to use information in existing landcover maps when compiling regional or global maps, but there are no standardized techniques for using such data effectively. An iterative, "map-guided" classification approach was developed to compile a spatially and thematically consistent, seamless land-cover map of the entire Intermountain Semi-Desert ecoregion from a set of semi-in...

The rendering software supports direct point lighting and also environment lighting. We approximate environment lighting based on captured lighting environments. We use an image-based environment illumination technique to light the face with a specified environment map. An example is shown in Figure 1.The environment map is prefiltered with several blur kernels, for diffuse integration, glossy ...

in semi arid area geomorphological impacts of dams are very major. dams, as man- made structures, have major impacts on river hydrology, primarly through in the timing, magnitude, and frequency of low and high flows, ultimately producing a hydrologic regime differing significantly from the pre-impoundment natural flow regime. despite the profiles of dams on river regulation for water resources ...