Raj Boora, Alan R. Davis, T. Craig Montgomerie
Abstract: Students miss classes for a number of reasons. With emerging technology, providing asynchronous access to that class is possible. Rural Advanced Community of Learners 1 (RACOL) is creating...
The Complexity of Diffuse Reflections in a Simple Polygon (2008)
Boris Aronov, Alan R. Davis, John Iacono, Albert Siu, Cheong Yu
Abstract. The complexity of the visibility region formed by a point light source after k diffuse reflections in a simple n-sided polygon is O(n 9), which is the first result polynomial in n, with no...
The Complexity of Diffuse Reflections in a Simple Polygon (2008)
Boris Aronov, Alan R. Davis, John Iacono, Albert Siu, Cheong Yu
Abstract. The complexity of the visibility region formed by a point light source after k diffuse reflections in a simple n-sided polygon is O(n 9), which is the first result polynomial in n, with no...
Visibility with One Reflection (1997)
Boris Aronov, Alan R. Davis, Tamal K. Dey, Sudebkumar P. Pal, D. Chithra Prasad
We extend the concept of the polygon visible from a source point S in a simple polygon by considering visibility with two types of reflection, specular and diffuse. In specular reflection a light ray...
Visibility with Multiple Reflections (1996)
Boris Aronov, Alan R. Davis, Tamal K. Dey, Sudebkumar P. Pal, D. Chithra Prasad
We show that the region lit by a point light source inside a simple n-gon after at most k reflections off the boundary has combinatorial complexity O(n 2k ), for any k 1. A lower bound of...
Thesis (Ph. D.)--Simon Fraser University, 1980.
Thesis (M. Sc.)--Simon Fraser University, 1974.
Primitive adult hematopoietic stem cells can function as osteoblast precursors
Olmsted-Davis, Elizabeth A., Gugala, Zbigniew, Camargo, Fernando, Gannon, Francis H., Jackson, KathyJo, Kienstra, Kirsten Anderson, ...
Osteoblasts are continually recruited from stem cell pools to maintain bone. Although their immediate precursor is a plastic-adherent mesenchymal stem cell able to generate tissues other than bone,...
Primitive adult hematopoietic stem cells can function as osteoblast precursors
Olmsted-Davis, Elizabeth A., Gugala, Zbigniew, Camargo, Fernando, Gannon, Francis H., Jackson, KathyJo, Kienstra, Kirsten Anderson, ...
Osteoblasts are continually recruited from stem cell pools to maintain bone. Although their immediate precursor is a plastic-adherent mesenchymal stem cell able to generate tissues other than bone,...
Hypoxic Adipocytes Pattern Early Heterotopic Bone Formation
Olmsted-Davis, Elizabeth, Gannon, Francis H., Ozen, Mustafa, Ittmann, Michael M., Gugala, Zbigniew, Hipp, John A., ...
The factors contributing to heterotopic ossification, the formation of bone in abnormal soft-tissue locations, are beginning to emerge, but little is known about microenvironmental conditions...