O scar the Cat awakens from his nap, opening a single eye to survey his kingdom. From atop the desk in the doctor's charting area, the cat peers down the two wings of the nursing home's advanced dementia unit. All quiet on the western and eastern fronts. Slowly, he rises and extravagantly stretches his 2-year-old frame, first backward and then forward. He sits up and considers his next move. In...

The human brain is capable of encoding a large and diverse body of common sense knowledge and performing a wide range of inferences rapidly; to wit our ability to understand language in real-time. Consider the simple narrative: “John fell in the hallway. Tom had cleaned it. He got hurt.” Upon reading this narrative most of us would effortlessly infer that Tom had cleaned the hallway, therefore,...

The aim of this article is to explore how laughter played out in parental collaboration between ECEC practitioners and refugee parents. This part the communication seen relation terms practices regarding social cultural sustainability, operationalised as inclusive institutions that enable parents’ participation sense belonging. study includes six days observation during delivery pick-up hallway...

This paper presents a hexagon-based Q-leaning algorithm to find a hidden target object with multiple robots. An experimental environment was designed with five small mobile robots, obstacles, and a target object. Robots went in search of a target object while navigating in a hallway where obstacles were strategically placed. This experiment employed two control algorithms: an area-based action ...

The moving sofa problem, posed by L. Moser in 1966, asks for the planar shape of maximal area that can move around a right-angled corner in a hallway of unit width. It is known that a maximal area shape exists, and that its area is at least 2.2195 . . .—the area of an explicit construction found by Gerver in 1992—and at most 2 √ 2 ≈ 2.82, with the lower bound being conjectured as the true value...

Most approaches to map-making with an autonomous mobile robot rely on a set of standard tools, such as laser range finders, sonar arrays, precise shaft encoders, or GPS uplinks. While it is difficult to construct a map without such tools, there is still utility in endowing low-cost, legged robots with map-making capabilities in order to exploit their unique advantages. This paper describes an a...

Automated 3D modeling of building interiors is useful in applications such as virtual reality and entertainment. Using a human-operated backpack system equipped with 2D laser scanners and inertial measurement units, we develop four scan-matching-based algorithms to localize the backpack and compare their performance and tradeoffs. We present results for two datasets of a 30-meter-long indoor ha...

In this paper†, we consider the problem of indoor surveillance and propose a feature selection scheme for occupancy classification in an indoor environment. The classifier aims to determine whether there is exactly one occupant or more than one occupant. Data are obtained from six seismic sensors (geophones) that are deployed in a typical building hallway. Four proposed features exploit amplitu...