An r-graph is an r-regular graph where every odd set of vertices is connected by at least r edges to the rest of the graph. Seymour conjectured that any r-graph is r + 1edge-colorable, and also that any r-graph contains 2r perfect matchings such that each edge belongs to two of them. We show that the minimum counter-example to either of these conjectures is a brick. Furthermore we disprove a va...

The effect of brickworks emissions on heavy metal content of soil and plants around the brick kiln chimneys was studied in the year 2006. Two brick kilns (A and B) about 600 m away from Ring Road at SufaidDheri on southerrn side of Peshawar, Pakistan were selected for this study. The two bricks kilns were North-South to each other with 300 m distance in between, such that South direction from b...

This paper presents the modular robotic system SafeBot to air autonomous nuclear security applications. This research serves many Department of Energy applications for inspection and surveillance in hazardous areas. Currently four kinds of sensors are available through the SafeBot robotics system: laser ranger sensor brick, thermal sensor brick, visual sensor brick and gamma and neutron sensor ...

This paper offers an analysis of the evolution of e-commerce markets. We develop a model in which an initial group of small, no-name “click” firms create such markets by offering horizontally differentiated customized or “versioned” products and competing in prices. Subsequently, a traditional “brick” firm enters by stretching its brand name into the digital marketplace. Such entry causes many ...

Interior brick-infill partitions are usually considered as non-structural components and only their weight is accounted for in practical structural design. In this study, their effect on the progressive collapse resistance of an RC building subjected to sudden column loss is investigated. Three notional column loss conditions with four different brick-infill locations are considered. Column-los...

The effect of artificial pozzolan (waste brick) on the physico-chemical properties of cement manufactured was investigated. The waste brick is generated by the manufacture of bricks. It was used in the proportions of 0%, 5%, 10%, 15% and 20% by mass of cement to study its effect on the physico-chemical properties of cement incorporating artificial pozzolan. The physicochemical properties of cem...

Mixed-reality promises a new era of applications, in which professional or individual users will find unique ways to explore and experience their current activities. Although mixed-reality home devices are still not widely accessible, especially for a broad public, immersive displays and interaction tools are already used in professional industries and institutes. However, the exploration of ne...

We present an internship program focused on project-based learning designed to introduce students to robotics engineering utilizing the iRobot Create platform. Our aim is to provide instructors and mentors with a set of projects with an appropriate level of complexity so as to stimulate the interest of the students while providing them a sense of accomplishment. We provide a detailed descriptio...

In this paper, a mobile scanning system for real-time under-vehicle inspection is presented, which is founded on a “Brick” architecture. In this “Brick” architecture, the inspection system is basically decomposed into bricks of three kinds: sensing, mobility, and computing. These bricks are physically and logically independent and communicate with each other by wireless communication. Each bric...