Abstract: A social networking system aggregates two or more stories having at least one common characteristic to create an aggregated story unit. Each story describes an action performed on an object over the social networking system or external to the social networking system. The aggregated story unit includes one or more input elements allowing a viewing user to interact with the aggregate story unit as a whole or with individual stories in the aggregated story unit. The input elements included in the aggregated story unit may be based on the types of the actions or of the objects described by stories in the aggregated story unit and on one or more input policies.

Abstract: A photoacoustic transducer, such as a photoacoustic probe includes an optical fiber, diaphragm, at the optical fiber, whereby the optical fiber and diaphragm define a cavity, and an energy absorption film at the optical fiber, whereby an activating laser directed through the optical fiber can excite the energy absorption film to thereby generate an acoustic wave that, upon reflection upon a remote surface, can deflect the diaphragm and modify reflection of a detecting laser also directed through the optical fiber. A method of detecting an acoustic wave includes directing an activating laser through an optical fiber to an energy absorption film at the optical fiber, directing a detecting laser through the optical fiber and cavity to the diaphragm at the optical fiber, and measuring an interference pattern generated at least in part by reflection of the detecting laser from a surface of the diaphragm.

Abstract: One embodiment relates to a computer-implemented method for generating difference data between reference and target files. A difference engine implemented using a computer receives the reference and target files. The difference engine performs a first procedure to generate difference data representing the difference between the reference and target files if the size of the reference file is less than a first threshold size. The difference engine performs a second procedure to generate the difference data if the size of the reference file is less than a second threshold size and greater than the first threshold. The difference engine performing a third procedure to generate difference data if the size of the reference file is greater than the second threshold size. Other embodiments relate to apparatus for generating difference data between reference and target files and for reconstructing the target files from the reference files using the difference data.

Abstract: An optical fiber sensor (100) can be used to measure pressure with high sensitivity and fine resolution. As a (108) at the end of the sensor expands or contracts, the spectrum of a beam reflected from the end of fiber shifts, producing a change linked to pressure exerted on the sensor. Novel aspects of the present inventive sensor include the direct bonding of a silica thin film diaphragm (110) to the optical fiber with localized or confined heating and a uniform thickness of the diaphragm. The resulting sensor has a diameter that matches the diameter of the optical fiber. Because the sensor is all silica, it does not from temperature-induced error. In addition, the sensor can be very sensitive because the diaphragm can be very thin; it can also make highly repeatable measurements due to its very uniform thickness.

Abstract: A horizontal band-saw has a base, a conveyor assembly, multiple band-saw assemblies and multiple auxiliary pressing assemblies. The base has multiple crossbars and multiple stanchions. The conveyor assembly is mounted on the base and has two parallel conveyor belts and a guide panel. The band-saw assemblies are mounted on the base across the conveyor belts and each band-saw assembly has a casing, a drive device, two drive wheels and a band saw. Each casing is mounted on a top of the base and has an adjusting device. Each drive device is mounted on a corresponding casing. The drive wheels are mounted in a corresponding casing. The band saw is mounted around the drive wheels. The auxiliary pressing assemblies are mounted on the base adjacent respectively to the band-saw assemblies and each auxiliary pressing assembly has a front auxiliary assembly and a rear auxiliary assembly.

Abstract: A disposable serial package and its monitoring system are proposed. Conductive structures are provided on each of several package units detachably attached in series forming the disposable serial package. Each conductive structure has several leads and each of the leads has a front end and a tail end. The tail end of a second lead being connected to a first lead on the same conductive structure and a third lead of any one of the package units is connected to the front end of the second lead of a succeeding package unit. A monitoring device is cooperatively used to allow setting of the quantity of package units to be monitored and the instantaneous quantity of package units based on the conducting state of the leads.

Abstract: A band saw is disclosed to includes a holder frame, which is movable along two vertical guide rods above the machine base and holds a saw blade and a saw blade driving mechanism, a nut fixedly provided at the top of the holder frame, a vertical motor mounted on a connecting frame at the top of the guide rods, and a screw rod threaded into the fixed nut and rotatable by the vertical motor to move the holder frame along the guide rods to the desired elevation.

Abstract: A band saw is disclosed to includes a holder frame, which is movable along two vertical guide rods above the machine base and holds a saw blade and a saw blade driving mechanism, a nut fixedly provided at the top of the holder frame, a vertical motor mounted on a connecting frame at the top of the guide rods, and a screw rod threaded into the fixed nut and rotatable by the vertical motor to move the holder frame along the guide rods to the desired elevation.