Abstract: Techniques for generating simulations to evaluate an update to a controller. The controller may be configured to control one or more functionalities of an autonomous and/or a semi-autonomous vehicle. A simulation computing system may receive a request to evaluate a first controller. The simulation computing system may generate a simulation based on data associated with a previous operation of the vehicle in an environment, the previous operation being controlled by a second controller (e.g., standard for evaluation, control version, etc.). The simulation computing device may cause the first controller to control a simulated vehicle in the simulation and may determine whether to validate the update to the controller based on a difference between first metrics associated with a control of the simulated vehicle by the first controller and second metrics associated with a control of the vehicle by the second controller.

Abstract: An expansion anchor includes an anchor bolt and an expansion sleeve which encompasses the anchor bolt. The anchor bolt has an expansion-sleeve expansion region and an expansion-element expansion region. The expansion sleeve has an expansion element which is disposed on the expansion sleeve. The expansion sleeve is radially displaceable by the expansion-sleeve expansion region and the expansion element is radially displaceable by the expansion-element expansion region. The expansion element is disposed on the expansion sleeve on a side of the expansion sleeve that radially faces the anchor bolt.

Abstract: A method for measuring disaster resilience of urban public services includes the following steps: constructing a residence-service-transportation space network under normal conditions; removing, through disaster simulation, failed road segments and function nodes to construct a damaged residence-service-transportation space network; calculating a per capita accessible public service of each residential node to represent network performance; calculating a change rate of the per capita accessible public service level before and after the disaster; and drawing a relation curve between the change rate and the disaster intensity to measure the disaster resilience of the urban public services.

Abstract: An expansion anchor includes an anchor bolt with a rear face, a displaceable body located adjacent to the anchor bolt, and at least one wedge body located in a front region of the anchor bolt. The wedge body has a converging zone for displacing the displaceable body. An optically readable code is located at the rear face of the anchor bolt. At least one code protection protrusion projects from the anchor bolt rearwardly beyond the optically readable code.

Abstract: An expansion anchor includes an anchor bolt and an expansion sleeve which surrounds the anchor bolt. The expansion sleeve has an expansion tongue and an anchor tongue and the anchor bolt has a backward-pointing expansion slope for radially displacing the expansion tongue and a backward-pointing anchor slope for radially displacing the anchor tongue. The backward-pointing anchor slope extends more steeply than the backward-pointing expansion slope at least in some regions.

Abstract: An additive manufacturing apparatus utilizing combined electron beam selective melting and electron beam cutting. One electron beam emitting, focusing, and scanning device (6) is capable of emitting electron beams (67, 68) in three modes of heating, selective melting, and electron beam cutting. The electron beam in the heating mode is emitted to scan and preheat a powder bed (7). The electron beam (67) in the selective melting mode is emitted to scan and melt powder (71) in a section outline to form a section layer of a component. The electron beam (68) in the electron beam cutting mode is emitted to perform one or more cutting scans on inner and outer outlines (74, 75) of a section of the component to obtain accurate and smooth inner and outer outlines of the section. The heating, melting deposition, and outline cutting processes are repeated to obtain a required three-dimensional physical component.

Abstract: An expansion anchor includes an anchor bolt and an expansion sleeve which surrounds the anchor bolt. The expansion sleeve has an expansion tongue and an anchor tongue and the anchor bolt has a backward-pointing expansion slope for radially displacing the expansion tongue and a backward-pointing anchor slope for radially displacing the anchor tongue. The backward-pointing anchor slope extends more steeply than the backward-pointing expansion slope at least in some regions.

Abstract: An expansion anchor includes an anchor bolt with a rear face, a displaceable body located adjacent to the anchor bolt, and at least one wedge body located in a front region of the anchor bolt. The wedge body has a converging zone for displacing the displaceable body. An optically readable code is located at the rear face of the anchor bolt. At least one code protection protrusion projects from the anchor bolt rearwardly beyond the optically readable code.

Abstract: An expansion anchor includes an anchor bolt and an expansion sleeve which encompasses the anchor bolt. The anchor bolt has an expansion-sleeve expansion region and an expansion-element expansion region. The expansion sleeve has an expansion element which is disposed on the expansion sleeve. The expansion sleeve is radially displaceable by the expansion-sleeve expansion region and the expansion element is radially displaceable by the expansion-element expansion region. The expansion element is disposed on the expansion sleeve on a side of the expansion sleeve that radially faces the anchor bolt.

Abstract: An additive manufacturing apparatus utilizing combined electron beam selective melting and electron beam cutting. One electron beam emitting, focusing, and scanning device (6) is capable of emitting electron beams (67, 68) in three modes of heating, selective melting, and electron beam cutting. The electron beam in the heating mode is emitted to scan and preheat a powder bed (7). The electron beam (67) in the selective melting mode is emitted to scan and melt powder (71) in a section outline to form a section layer of a component. The electron beam (68) in the electron beam cutting mode is emitted to perform one or more cutting scans on inner and outer outlines (74, 75) of a section of the component to obtain accurate and smooth inner and outer outlines of the section. The heating, melting deposition, and outline cutting processes are repeated to obtain a required three-dimensional physical component.

Abstract: A heat-assisted magnetic recording (HAMR) disk drive read/write head has the write head located adjacent the trailing surface of the gas-bearing slider with the read head located adjacent the write head, which is the reversed location from conventional read/write heads. This results in reduced write head protrusion during writing which allows for a reduced minimum fly-height for the slider. For a HAMR read/write head that uses a heater to protrude the read head closer to the disk during reading, the reversed location allows for better heater efficiency and thus reduced heater power.

Abstract: Disclosed is a turbine rotor device for a gas turbine, the turbine rotor device comprising a turbine rotor body, and a pre-stressed fiber-wound layer, wherein the pre-stressed fiber-wound layer is wound on the periphery of the turbine rotor body to exert a predetermined pre-loading force on the turbine rotor body. Additionally, a rotor, and a gas turbine and a turbine engine having the turbine rotor device are also provided.

Abstract: A reactor for sewage treatment includes: an inner layer including a water distribution zone; a middle layer including a biological aerated filter, the biological aerated filter including a wall and a bottom including a water outlet; and an outer layer including an artificial wetland, the artificial wetland including a bottom including a water inlet. The water distribution zone, the biological aerated filter, and the artificial wetland are in the shape of a circle. The sewage is introduced into the water distribution zone via a water inlet pipe. The water distribution zone communicates with the biological aerated filter via a first overflow. The water outlet arranged on the bottom of the biological aerated filter is connected to the water inlet arranged on the bottom of the artificial wetland to allow the biological aerated filter to communicate with the artificial wetland.

Abstract: A method for providing energy assisted magnetic recording (EAMR) heads are described. The method and system include providing a substrate, at least one EAMR transducer, an overcoat layer and at least one laser. The substrate has a leading edge and a substrate trailing edge. The EAMR transducer(s) reside in a device layer and on the substrate trailing edge. The overcoat layer includes a plurality of contacts. The device layer is between the overcoat layer and the substrate trailing edge. The laser(s) provide energy to the EAMR transducer. The overcoat layer is between the substrate trailing edge and the laser(s). The laser(s) are electrically coupled to at least a first portion of the contacts. The contacts provide thermal connection through the overcoat layer and through the device layer to the substrate. At least a second portion of the contacts is electrically insulated from the substrate.

Abstract: A method and system test a heat assisted magnetic recording (HAMR) transducer. The HAMR transducer is optically coupled to at least one laser and has an air-bearing surface. The HAMR transducer includes at least one waveguide, at least one near-field transducer (NFT) and a pole. A portion of the NFT(s) resides at the ABS. The laser(s) are optically coupled to the NFT(s). The method and system include energizing the laser(s) at power(s) while the HAMR transducer is not in proximity to a media. The method and system also include measuring an off-disk protrusion of the portion of the NFT(s) at the ABS while the laser(s) are energized and the HAMR transducer is not in proximity to the media.

Abstract: A method fabricates a heat assisted magnetic recording (HAMR) transducer having an air-bearing surface (ABS) and that is optically coupled with a laser. The HAMR transducer includes a write pole, a waveguide, and at least one protective pad. The write pole has a pole tip with an ABS facing surface. The waveguide is located in a down track direction from the pole tip and directs light from the laser toward the ABS. The protective pad(s) are adjacent to the write pole and have front surface(s) at the ABS.

Abstract: Disclosed is a turbine rotor device for a gas turbine, the turbine rotor device comprising a turbine rotor body, and a pre-stressed fiber-wound layer, wherein the pre-stressed fiber-wound layer is wound on the periphery of the turbine rotor body to exert a predetermined pre-loading force on the turbine rotor body. Additionally, a rotor, and a gas turbine and a turbine engine having the turbine rotor device are also provided.

Abstract: A reactor for sewage treatment including: an inner layer including a water distribution zone; a middle layer including a biological aerated filter, the biological aerated filer including a wall and a bottom including a water outlet; and an outer layer including an artificial wetland, the artificial wetland including a bottom including a water inlet. The water distribution zone, the biological aerated filter, and the artificial wetland are in the shape of a circle. The sewage is introduced into the water distribution zone via a water inlet pipe. The water distribution zone communicates with the biological aerated filter via a first overflow. The water outlet arranged on the bottom of the biological aerated filer is connected to the water inlet arranged on the bottom of the artificial wetland to allow the biological aerated filter to communicate with the artificial wetland.

Abstract: An energy assisted magnetic recording (EAMR) head having a stress buffer for reducing the stress on a near-field transducer during thermal expansion and methods for fabricating the EAMR head are provided. The EAMR head includes a waveguide, a near-field transducer (NFT) configured to receive optical energy from the waveguide, and a cladding of the waveguide has an opening. The NFT is positioned within the opening, and an air gap is formed between the NFT and a side wall of the opening.

Abstract: Embodiments of the present invention relate to integral heating elements in solder pads for flip chip bonding. The integral heating elements are used to solder components together without exposing other locations and components in the assembly to potentially damaging temperatures. Embodiments of the invention may be used in manufacture of magnetic heads for EAMR hard disks to bond a laser sub-mount to an air-bearing slider without exposing magnetic head components to high temperatures.