Abstract: The present disclosure relates generally to roofing products, for example, shingles suitable for covering and protecting the roofs of houses, buildings, and other structures. The present disclosure relates more particularly to a roofing shingle including an upper edge, a lower edge, a first end, a second end, a headlap section, and an exposed section. A nail zone extends across the roofing shingle from the first end to the second end within the headlap section. The roofing shingle includes a top shingle layer including a top surface and a bottom surface. A reinforcement strip is secured to the bottom surface of the top shingle layer and overlaps with the nail zone. Further, a self-sealing material is disposed within the nail zone and is configured to form a seal around a mechanical fastener that punctures the roofing shingle in order to secure the roofing shingle to an underlying roof structure.

Abstract: A work vehicle is disclosed with a propulsion system that is selectively operable in a first, turning mode or a second, straight mode. The vehicle includes a first traction device, a second traction device, a first steering input, and a second steering input. In the first, turning mode, an operator is able to steer the vehicle left, right, or straight by independently operating the first and second traction devices via the first and second steering inputs. In the second, straight mode, the operator is able to steer the vehicle straight by operating both the first and second traction devices together via one of the first and second steering inputs.

Abstract: A work vehicle is disclosed with a propulsion system that is selectively operable in a first, turning mode or a second, straight mode. The vehicle includes a first traction device, a second traction device, a first steering input, and a second steering input. In the first, turning mode, an operator is able to steer the vehicle left, right, or straight by independently operating the first and second traction devices via the first and second steering inputs. In the second, straight mode, the operator is able to steer the vehicle straight by operating both the first and second traction devices together via one of the first and second steering inputs.

Abstract: A work vehicle is disclosed with a propulsion system that is selectively operable in a first, turning mode or a second, straight mode. The vehicle includes a first traction device, a second traction device, a first steering input, and a second steering input. In the first, turning mode, an operator is able to steer the vehicle left, right, or straight by independently operating the first and second traction devices via the first and second steering inputs. In the second, straight mode, the operator is able to steer the vehicle straight by operating both the first and second fraction devices together via one of the first and second steering inputs.

Abstract: A work vehicle is disclosed with a propulsion system that is selectively operable in a first, turning mode or a second, straight mode. The vehicle includes a first traction device, a second traction device, a first steering input, and a second steering input. In the first, turning mode, an operator is able to steer the vehicle left, right, or straight by independently operating the first and second traction devices via the first and second steering inputs. In the second, straight mode, the operator is able to steer the vehicle straight by operating both the first and second fraction devices together via one of the first and second steering inputs.

Abstract: Methods and apparatuses for purchasing telephone calling card minutes and for conducting other forms of electronic commerce. In one embodiment, a method for conducting electronic commerce includes providing a kiosk in a publicly accessible location, and displaying one or more transaction options to a user at the kiosk. The method may further include receiving a transaction selection from the user corresponding to one or more of the displayed transaction options, determining an amount due from the user in response to the transaction selection, and receiving funds from the user. In response to receiving the funds, the kiosk may dispense a redeemable voucher to the user, including a redeemable voucher for any amount paid in excess of the amount due.

Abstract: Methods and apparatuses for purchasing telephone calling card minutes and for conducting other forms of electronic commerce. In one embodiment, a method for conducting electronic commerce includes providing a kiosk in a publicly accessible location, and displaying one or more transaction options to a user at the kiosk. The method may further include receiving a transaction selection from the user corresponding to one or more of the displayed transaction options, determining an amount due from the user in response to the transaction selection, and receiving funds from the user. In response to receiving the funds, the kiosk may dispense a redeemable voucher to the user, including a redeemable voucher for any amount paid in excess of the amount due.

Abstract: Methods and apparatuses for purchasing telephone calling card minutes and for conducting other forms of electronic commerce. In one embodiment, a method for conducting electronic commerce includes providing a kiosk in a publicly accessible location, and displaying one or more transaction options to a user at the kiosk. The method may further include receiving a transaction selection from the user corresponding to one or more of the displayed transaction options, determining an amount due from the user in response to the transaction selection, and receiving funds from the user. In response to receiving the funds, the kiosk may dispense a redeemable voucher to the user, including a redeemable voucher for any amount paid in excess of the amount due.

Abstract: Cementitious compositions useful as lightweight aggregates are formed from a blend of spent bed material from fluidized bed combustion and fly ash. The proportions of the blend are chosen so that ensuing reactions eliminate undesirable constituents. The blend is then mixed with water and formed into a shaped article. The shaped article is preferably either a pellet or a "brick" shape that is later crushed. The shaped articles are cured at ambient temperature while saturated with water. It has been found that if used sufficiently, the resulting aggregate will exhibit minimal dimensional change over time. The aggregate can be certified by also forming standardized test shapes, e.g., cylinders while forming the shaped articles and measuring the properties of the test shapes using standardized techniques including X-ray diffraction.