摘要:
A laser system is disclosed comprising a laser source for producing a laser beam along a beam path, means to stabilize the frequency of the laser beam, at least one optical component which produces back-scattered light when in use, and a phase modulator for modulating the phase of the back-scattered light. The optical component may be a plane mirror or an optical fibre. The phase modulator may be an oscillating glass block, optionally driven by a motor. Alternatively, the phase modulator is a glass block cyclically compressed by a piezoelectric element.
摘要:
Interferometry apparatus which comprises a measurement light beam (2a, 2b) and a reference light beam (2c, 2d) which interact with each other to cause a spatial fringe pattern (24). An optical device (12) is provided which interacts with the spatial fringe pattern (24), such that light is spatially separated into different directions (30, 32, 34, 36). The intensity modulation in two or more directions of the spatially separated light is phase shifted. The optical device may comprise, for example, a diffractive device, a refractive device or a diffractive optical element.
摘要:
A laser interferometer is disclosed comprising a housing capable of being substantially repeatably mounted to a wall of an environmental chamber, the housing including a laser source, a reflector attached to an object located within the environmental chamber, and a light passage provided through the wall of the environmental chamber enabling passage of a laser beam from the laser source to the reflector. At least one beam steerer may be provided for adjusting direction of passage of a laser beam through the light passage. Also disclosed is a column laser interferometer.
摘要:
An extensible electronic learning system having at least one learning management system having a learning management processor and a learning management memory operatively coupled thereto, said processor programmed for executing at least one learning management service and providing at least one extensible integration module. Each extensible integration module includes a predefined vendor services interface comprising at least one vendor services definition, and a vendor configuration upload component for receiving vendor configuration settings about at least one vendor. The at least one vendor having a vendor processor and a vendor memory operatively coupled thereto, said vendor processor programmed for executing a least one vendor services, the at least one of said vendor services implementing the at least one of said vendor service definition, and providing at least one vendor integration module, each vendor integration module comprising the predefined vendor services interface and the vendor configuration settings. The vendor configuration settings are received by the extensible integration module such that the learning management system may request the at least one of said vendor services based on the extensible integration module.
摘要:
Systems, platforms, methods and media for providing genomic services are disclosed. In one example, a platform comprises a network interface, in communication with a sequencing laboratory, through which are received genomic sequence reads derived from a biological sample obtained from a user, and a bioinformatics processing pipeline. The pipeline includes a read alignment module configured to generate observed sequence data by aligning the sequence reads relative to a reference sequence, a variant calling module operative to identify observed variants in the observed sequence data, a genomic data storage containing at least the observed variants in the observed sequence data, and a variant storage module disposed to receive a query from network infrastructure of a partner application provider and to provide genomic information based on or derived from the observed variants in response to the query.
摘要:
An electromagnetic vector sensor (EMVS) system, having a plurality of EMVS devices consisting of a plurality of loop antenna elements spatiatally orthogonally integrated with and electrically isolated from a plurality of dipole antenna elements, mounted on a rotatably adjustable platform having a true north orientation, including active circuitry residing in antenna housings, and external executing software programs causing the active circuitry in cooperation with the EMVS device and receivers to determine angle of arrival and resolution of incoming wave vectors and polarization of incoming signals and to perform accurate high frequency geolocation signal processing; the programs which perform calibration and antenna element placement determination operations, also cause the system to collect data of known transmitted high frequency skywave signals, and estimate direction of arrival of unknown signals by detecting, resolving and measuring components of an electric field and a magnetic field at a single point.
摘要:
A device for breaking glass, arranged to be mounted on a pane of a breakable substrate, and being actuatable to break the pane. In one embodiment, the device comprises a base, a plunger moveable relative the base and a pin extending from and axially moveable relative the plunger, wherein the plunger is moveable relative the base from a retracted to an extended position so when the base is placed against a first pane, a distal end of the pin strikes and breaks the first pane, and the pin is moveable relative the plunger from a retracted position to an extended position, with the plunger in its extended position, such that the distal end of the pin strikes and breaks a second pane parallel to the first pane. Preferably, the plunger and pin are biased to an extended position each by a biasing means.
摘要:
A stacked electrode includes an optical match layer, a transparent conductive layer, and a metal layer. A complex refractive index of the optical match layer is N1, and N1=n1−ik1, wherein n1 represents a refractive index of the optical match layer and k1 represents an extinction coefficient of the optical match layer. A complex refractive index of the transparent conductive layer is N2, and N2=n2−ik2, wherein n2 represents a refractive index of the transparent conductive layer, k2 represents an extinction coefficient of the transparent conductive layer, n1>n2, and k1
摘要:
Techniques for routing a payload of a first network protocol, which includes header information for a second network protocol, include communicating a packet. In a circuit block, a first type for the first network protocol and a second type for the second network protocol are determined. The circuit block stores a classification that indicates a unique combination of the first type and the second type. A general purpose processor routes the packet based on the classification. Processor clock cycles are saved that would be consumed in determining the types. Furthermore, based on the classification, the processor can store an offset value for aligning the header relative to a cache line. The circuit block can store the packet shifted by the offset value. The processor can then retrieve from memory a single cache line to receive the header, thereby saving excess loading and ejecting of cache.
摘要:
Asphalt and elastomeric polymer compositions crosslinked with mixed polythiomorpholines or at least one alkyl polysulfide can give polymer modified asphalts (PMAs) with improved properties and/or reduced H2S evolution. When at least one alkyl polysulfide is used to completely or partially replace conventional crosslinkers such as S or MBT, mercaptobenzimidazole (MBI) may be optionally used as a co-crosslinker. The use of mixed polythiomorpholines as crosslinkers provide PMAs with better low temperature profiles (BBR m-values). The use of at least one alkyl polysulfide crosslinker gives PMAs with improved PAV-aged DSR results, and reduced H2S evolution. The use of at least one alkyl polysulfide crosslinker together with MBI may give PMAs with improved PAV DSR Fail Temperatures.