摘要:
Intra-cavity and/or inter-cavity sub-resonators with dielectric coated mirrors have anti-reflection and high-reflection coatings to attain high efficiency third and higher order harmonics generation of laser radiation. Main-resonators and sub-resonators enhance the fundamental and harmonic oscillations, respectively, which result in high conversion efficiency of third harmonics and higher. Such improved lasing efficiency may be implemented in high power lasers for improved power performance to attain over 8 W of UV output power with a high repetition rate. The use of intra-cavity THG techniques provide high efficiency by using existing high intensities of the input fundamental frequencies available in the intra-cavity region of the laser to avoid damage to components of the laser, such as the laser crystal. The THG utilizes a double-pass and/or multi-pass arrangement, which results in about a 60% increase in output power compared to a single-pass configuration. Also, blocking of UV energy generated in a return pass is performed to eliminate damage by the UV to the components in the main cavity.
摘要:
Techniques are disclosed for enhancing the dielectric breakdown performance of integrated circuit (IC) interconnects. The disclosed techniques can be used to selectively etch the dielectric layer of an IC to form a recess, for example, between a given pair of adjacent/neighboring interconnects (e.g., metal lines). Thereafter, a layer of dielectric material of higher dielectric breakdown field (Ec) than the surrounding/underlying dielectric material (or other suitable insulator, as will be apparent in light of this disclosure) may be deposited/grown so as to substantially conform to the topology provided by the adjacent/neighboring interconnects and etched recess. In some cases, this dielectric layer may help to prevent or otherwise reduce: (1) dielectric breakdown between the adjacent/neighboring interconnects by locally increasing the dielectric breakdown voltage (VBD); and/or (2) diffusion of the interconnect fill metal into the surrounding/underlying dielectric material. In some instances, such a layer may serve as an etch stop.
摘要:
Techniques for performing traffic classification for uplink and bi-directional traffic streams are described. A station receives packets for transmission on the uplink to an access point. The station identifies packets for each uplink traffic stream and packets for each bi-directional traffic stream based on at least one classification parameter for each traffic stream. The station sends packets for each traffic stream in accordance with at least one QoS parameter for the traffic stream. The access point receives packets for transmission on the downlink to at least one station. The access point identifies packets for each downlink traffic stream and packets for each bi-directional traffic stream based on at least one classification parameter for each traffic stream. The access point sends packets for each traffic stream in accordance with at least one QoS parameter for the traffic stream.
摘要:
A ceiling-mount omnidirectional antenna for indoor distribution system of mobile communication network and a method for manufacturing the same are provided. The antenna includes: a monopole consisting of a cone part and a columnar part; a reflecting plate consisting of a cone part and a platform part; and a feed connector. The monopole and the reflecting plate are arranged in such that the tips of cone parts are opposite to each other. The signal is fed into the antenna through the feed connector and radiated outward by the monopole and the reflecting plate. In high frequency band, the maximal gain appears at about 70°, so that the signal power focuses at radiating angles of 60°˜85°. Comparing to the existing antenna, the gain of the antenna increases 4.22 dB at a radiating angle of 85° and decreases 10 dB at a radiating angle of 30°. So, the maximal permissible value of antenna aperture power of mobile communication signal in high frequency band, such as 3G, is increased; and the field strength of signal covering the edge is increased. The antenna can increase the covering range of a single antenna, increase the signal quality, and cover 2G and 3G networks in the same time so as to reduce the difficulty and the cost for building and reconstructing an indoor distribution system in 3G.
摘要:
A method of determining the suitability of a surfactant for use in a formation can include sampling water in the formation, providing at least two surfactants, and mixing each of the surfactants with the formation water to form surfactant/water samples. The method can further include determining the solubility of each surfactant with the formation water, comparing the solubility of each surfactant with the other surfactant, and assigning a solubility performance value for each surfactant based on its solubility in the formation water sample compared to the other surfactant.
摘要:
A vehicle control system includes at least one touch pad having a plurality of touch sensitive elements and processing circuitry communicatively coupled to the at least one touch pad. The processing circuitry is operable to receive touch pad input from the at least one touch pad, the touch pad input corresponding to a user's touch of at least some of the plurality of touch sensitive elements. The processing circuitry further processes the touch pad input to determine user finger characteristics. The processing circuitry further processes the user finger characteristics to identify the user via pattern recognition and alters at least one vehicle setting based upon the identified user. Vehicle settings may be one or more of entertainment system settings, navigation system settings, suspension system settings, seat settings, mirror settings, steering wheel settings, climate control system settings, suspension system settings, engine control system settings, lighting system settings, and communication system settings.
摘要:
A process for preparing polyoxymethylene dimethyl ethers from methanol is disclosed. For example, the process comprises contacting methanol with at least one oxidant in the presence of at least one catalyst wherein the at least one catalyst comprises at least one Group VIB metal component, such as in an amount of from about 0.5 to about 50 wt % (in terms of metal oxide) and at least one Group VIII metal component, such as in an amount of from about 0.2 to about 20 wt % (in terms of metal oxide), and at least one molecular sieve having acidic catalytic activity, such as in an amount of from about 40 to about 95 wt %, based on the total weight of the at least one catalyst for a time sufficient to obtain polyoxymethylene dimethyl ethers.
摘要:
Pattern model parameters are updated using update equations based on competing patterns that are identical to a reference pattern except for one segment at a time that is replaced with a competing segment. This allows pattern recognition parameters to be tuned one segment at a time, rather than have to try to model distinguishing features of the correct pattern model as a whole, according to an illustrative embodiment. A reference pattern and competing patterns are divided into pattern segments. A set of training patterns are generated by replacing one of the pattern segments in the reference pattern with a corresponding competing pattern segment. For each of the training patterns, a pattern recognition model is applied to evaluate a relative degree of correspondence of the reference pattern with the pattern signal compared to a degree of correspondence of the training patterns with the pattern signal.
摘要:
Disclosed herein are platform- and device-independent systems and methods for serializing and deserializing data. A method of serializing data stored in a data structure comprises generating a data structure descriptor representing information about a memory layout of the data structure and serializing the stored data based upon the data structure descriptor. The data structure descriptor may include a layout array, including a memory offset and a size corresponding to each member of the data structure. A method of processing serially received data for storage in a data structure comprises receiving a serial data stream, allocating memory for storing the data based upon a data structure descriptor, and deserializing the data stream based upon the data structure descriptor. The data structure descriptor may include a layout array, including a memory offset and a size corresponding to each member of the data structure.