On Fall Break

Study Break: Bacterial Cancer

Rarely, do we think of cancer as “bacterial”, such that we are often told that “cancer is NOT contagious” Persistent bacterial infections cause persistent irritation of the host’s defense systems, which when ineffective in eradication of the infection, result in a multitude of self-destructive damages. This in some cases occurs to such severity that the resu...

Break *

Fall on Residential Construction Sites

Falls from height remain the most common cause of workplace fatalities among residential construction workers, accounting for 64% of the fatalities in residential building and 100% of the fatalities among framing contractors in 2010 (BLS, 2011). Despite a recent decrease in fall incidence rates (BLS, 2011), 164 of the 1,025 carpenter apprentices surveyed (16%) reported a fall from height in the...

On Fall Colorings of Graphs

A fall k-coloring of a graph G is a proper k-coloring of G such that each vertex of G sees all k colors on its closed neighborhood. We denote Fall(G) the set of all positive integers k for which G has a fall k-coloring. In this paper, we study fall colorings of lexicographic product of graphs and categorical product of graphs and answer a question of [3] about fall colorings of categorical prod...

Fall on Backpack: Damage Minimizing Humanoid Fall on Targeted Body Segment Using Momentum Control

Safety and robustness will become critical issues when humanoid robots start sharing human environments in the future. In physically interactive human environments, a catastrophic fall is the main threat to safety and smooth operation of humanoid robots, and thus it is critical to explore how to manage an unavoidable fall of humanoids. This paper deals with the problem of reducing the impact da...