摘要:
Methods and apparatus, including computer systems and program products, for garbage collection of shared data entities. A computer program identifies a set of virtual machines (VMs), each operable to generate references to shared entities stored in shared memory. Each shared entity can include references to one or more of the other shared entities. The program waits for the VMs to independently identify the shared entities that they reference directly, and then initiates a shared garbage collection procedure to identify the shared entities that are not directly or indirectly referenced by any of the VMs and to reclaim the shared memory being used to store those shared entities. The VMs are prevented from generating new references to the shared entities solely during a portion of the shared garbage collection procedure. By minimizing the time during which access to the shared entities is restricted, performance and scalability can be increased.
摘要:
A technique for creating high quality Schottky barrier devices in doped (e.g., Li+) crystalline metal oxide (e.g., ZnO) comprises field-controlled diffusion of mobile dopant atoms within the metal oxide crystal lattice. When heated (e.g., above 550 K) in the presence of an electric field (e.g., bias to ground of +/−50 V) the dopant atoms are caused to collect to form an ohmic contact, leaving a depletion region. The size of the depletion region controls the thickness of the Schottky barrier. Metal-semiconductor junction devices such as diodes, photo-diodes, photo-detectors, MESFETs, etc. may thereby be fabricated.
摘要:
A tunable optical cavity can be tuned by relative movement between two reflection surfaces, such as by deforming elastomer spacers connected between mirrors or other light-reflective components that include the reflection surfaces. The optical cavity structure includes an analyte region in its light-transmissive region, and presence of analyte in the analyte region affects output light when the optical cavity is tuned to a set of positions. Electrodes that cause deformation of the spacers can also be used to capacitively sense the distance between them. Control circuitry that provides tuning signals can cause continuous movement across a range of positions, allowing continuous photosensing of analyte-affected output light by a detector.
摘要:
A safety cabinet has a plurality of walls defining a front open side and a pair of doors pivotal about respective horizontally spaced axes on the walls between a closed and an open position. Guides in the cabinet are each associated with a respective one of the doors, and respective links each have a front end connected to a respective one of the doors and a rear end shiftable front-to-back in a respective one of the guides. A connector extends between the rear ends of the links and shifts front-to-back with them. A closer is operatively engageable with the connector, and a spring applies bears on the closer to urge it against the connector for pushing same into the rear end position and closing the doors. An actuator normally holds the closer out of engagement with the connector during movement of same between the front and rear end positions.
摘要:
Systems and techniques for transferring the flow of control between agents. In one general aspect, a computer program product includes instructions operable to cause data processing apparatus to: store data on a first call stack, the first call stack corresponding to and being used by a first agent; suspend the first agent's use of the first call stack; enable a second agent to access the data by using the first call stack; and resume the first agent's use of the first call stack after the second agent is no longer using the first call stack. According to another aspect, a computer program product includes a first set of instructions that is operable to store and access data on a shared call stack; and a second set of instructions that is operable to alternate execution of the first set of instructions between a first agent and a second, distinct agent.
摘要:
An optical cavity, such as a laser or transmissive cavity, that can contain an analyte provides a different intensity-energy function with analyte present than when absent. The intensity-energy functions can, for example, include respective peaks that are different in at least one of central energy, amplitude, contrast, and full width half maximum (FWHM) (or other intermediate intensity width). Each intensity-energy function can include a set of modes in which the optical cavity provides output light. A laterally varying transmission component, such as a layered linearly varying filter, responds to the intensity-energy functions by providing different laterally varying energy distributions to a photosensing IC, and the distributions are also different, such as in position, size, or intensity. In response, the photosensing IC provides sensing results that are also different. The sensing results can be used to obtain information about the analyte, such as its refractive index or absorption coefficient.
摘要:
The invention relates to chemically or physically curable compositions suitable as adhesives or sealants or coating materials, which compositions contain at least one binding agent selected from the group comprising crosslinkable or polymerizable monomers, prepolymers, or polymers, as well as at least one filler. The filler proportion is 0.2 to 70 wt % based on the total weight of the compositions, and at least a portion of the filler is made up of glass particles having a particle size from 100 nm to 20 μm, which have been obtained by comminuting foamed neutral or acid glass.
摘要:
The present disclosure provides a silane crosslinking adhesive, sealant or coating containing a polymer, consisting of an organic framework that supports at least two alkoxy or acyloxysilyl groups and at least one filler. The filler consists at least partially of a highly disperse silicic acid with a BET surface area of 35 to 65 m2/g and is present in the adhesive, sealant or coating in a quantity of 1 to 60% by weight, in relation to the total weight of said adhesive, sealant or coating. The disclosure also provides the use of the adhesive, sealant or coating for bonding plastics, metal, glass, ceramics, wood or wood-based material, paper, paper-based material, rubber and textiles.
摘要:
A semiconductor device has a heterostructure including a first layer of semiconductor oxide material. A second layer of semiconductor oxide material is formed on the first layer of semiconductor oxide material such that a two dimensional electron gas builds up at an interface between the first and second materials. A passivation layer on the outer surface stabilizes the structure. The device also has a source contact and a drain contact.
摘要:
A tunable optical cavity can be tuned by relative movement between two reflection surfaces, such as by deforming elastomer spacers connected between mirrors or other light-reflective components that include the reflection surfaces. The optical cavity structure includes an analyte region in its light-transmissive region, and presence of analyte in the analyte region affects output light when the optical cavity is tuned to a set of positions. Electrodes that cause deformation of the spacers can also be used to capacitively sense the distance between them. Control circuitry that provides tuning signals can cause continuous movement across a range of positions, allowing continuous photosensing of analyte-affected output light by a detector.