Abstract: Multi-stage exhaust after treatment devices and compact arrangements of the same suitable for use in vehicles including diesel freight trucks. The multi-stage exhaust after-treatment device can include a first stage after-treatment component and a second stage after-treatment component that are connected by a transition chamber. The first stage after-treatment component and the second stage after-treatment component can be distinct enclosures shaped, arranged, and attached to form a vertically-stacked configuration with a non-linear upper pathway for exhaust after-treatment and a non-linear lower pathway for exhaust after-treatment that is additionally complemented by mixing in the transition chamber. Methods of manufacturing, integrating, and using such devices are also provided.

Abstract: Systems, methods and computer-readable storage media for generating digital wayfinding maps are described. A system for generating digital wayfinding maps may be configured to receive lines representing paths between points of interest on a map unit. For example, a developer may draw a lines on a map unit using an input device, such as a mouse. The system may automatically generate nodes at the ends of each line and at any point where lines intersect. The lines may be divided such that each pair of nodes is connected by one individual line. The nodes and lines connecting the nodes may be used to generate routes between the nodes to provide users with directions between nodes.

Abstract: Systems, methods and computer-readable storage media for generating digital wayfinding maps are described. A system for generating digital wayfinding maps may be configured to connect individual map units, such as map units configured to represent floors in a building. Portal nodes may be arranged on the map units that are configured to represent connection points between map units. Connection elements may be used to connect the map units through the portal nodes. For instance, for a building digital wayfinding map including floor map units, the connection elements may represent elevators, stairways and/or escalators. The connection elements and the portal nodes may be used to connect the map units to generate multi-unit routes that traverse multiple map units. Routes between points of interest on different map units may be presented to a user as a single navigable route using the connection elements and the portal nodes.