摘要:
The treatment well tiltmeter system comprises one or more tiltmeter assemblies which are located within an active treatment well. The treatment well tiltmeter system provides data from the downhole tiltmeters, and can be used to map hydraulic fracture growth or other subsurface processes from the collected downhole tilt data versus time. The system provides tilt data inversion of data from each of the treatment well tiltmeter assemblies, and provides isolation of data signals from noise associated with the treatment well environment. As well, the treatment well tiltmeter system provides geomechanical modeling for treatment well processes.
摘要:
A system and method for monitoring geophysical processes is disclosed. The system may include a component array located within the bore hole of the active well, or, alternatively, in the bore hole of a nearby offset well, or, alternatively, in multiple shallow boreholes in the surface around the active well. The system may include a sensor array located within a bore, wherein the sensor array has at least one tilt sensor and at least one microseismic sensor, a transmitter in communication with the at least one tilt sensor and the at least one microseismic sensor, and a receiver in communication with the transmitter. In one embodiment, data comprising tiltmeter data and microseismic data from a sensor during at least one geophysical process is received. The microseismic data is analyzed to ascertain a location of each microseismic event of a plurality of microseismic events isolated from the microseismic data, and the tiltmeter data is analyzed to ascertain orientation and dimension of a fracture developed during said at least one geophysical process.
摘要:
A shoe includes a shoe upper, a first lace and a second lace. The shoe upper includes a heel end, a toe end, and a mid-foot portion between the heel end and the toe end. The first lace is connected to the shoe upper and includes a wide portion and a narrow portion with a tapered portion in-between. The wide portion of the first lace is fastened to the mid-foot portion of the shoe upper at a first position that is nearer to the toe end than the heel end. The second lace is also connected to the shoe upper and also includes a wide portion and a narrow portion with a tapered portion in-between. The wide portion of the second lace is fastened to the mid-foot portion of the shoe upper at a second position that is nearer to the heel end than the first position.
摘要:
The invention provides a structure for automotive vehicle manufactured by rotational molding process having enough stiffness, strength and durability to sustain the weight of passengers without requiring any supporting sub-frames. The multilayer structure along with foam layer is used to provide additional impact strength and reliability to the structure of the vehicle against accidents. The single step production of structurally complex shaped body parts for automotive vehicle enables economic manufacturing and assembly of the automotive vehicle.
摘要:
An extended bandwidth HomePNA system uses a transmit spectrum having a greater bandwidth than the bandwidth specified by a HomePNA 2.0 communication standard. The extended bandwidth system of the invention provides for additional copies of a spectrum of a 2 Mbaud training signal for better accuracy in decoding transmitted data by a receiver. In one embodiment, the extended bandwidth is a 12 MHz band centered at 10 MHz, from 4 MHz to 16 MHz. This extended bandwidth allows for three copies of a 4 Mbaud training sequence or six copies of a 2 Mbaud training sequence. The extended bandwidth of the invention is compatible with a HomePNA 2.0 system by providing a training sequence that enables a HomePNA 2.0 receiver in 2 Mbaud mode to train on the transmitted signal and determine that the transmitted signal is not intended for the HomePNA 2.0 receiver in 2 Mbaud mode.
摘要:
An apparatus, system, and method are described for multi-carrier communication using adaptive tone-pruning. The method may include transmitting a data-bearing signal over a plurality of tones on a communication loop within a plurality of communication loops and calculating a minimum tone cost according to a tone cost algorithm. The tone cost algorithm defines a tone cost associated with a selected tone within the plurality of tones. The tone cost of the selected tone is based on a predefined loading frequency and a signal-to-noise ration (SNR) of the selected tone. The method also may include determining a bit loading pattern for the data-bearing signal according to the minimum tone cost. This determination may occur in response to a determination that a minimum allowable transmission power is greater than a minimum required transmission power for the data-bearing signal.
摘要:
A motorcycle flag holder mountable on a rear axle nut includes a main body formed from plate stock having spaced-apart first and second major planar surfaces. The main body has a regular-duodecagonally-shaped nut-securing aperture with a central an axis perpendicular to the major planar surfaces. The nut-securing aperture is sized to slide over the axle nut. The main body incorporates a slit that begins at an outer edge of the main body and terminates at an edge of the nut-securing aperture. First and second opposing portions of the main body on either side of the slit can be drawn together with a nut-securing bolt, thereby causing the nut-securing aperture shrinks in size and tighten around the axle nut. The main body also includes a flag staff retaining bore in which a flag staff may be secured with a thumb screw.
摘要:
A DSL system performs crosstalk cancellation using a plurality of vectoring cancellation chips that are partitioned into two or more groups based on DSL victim lines or DSL disturber lines or DSL tones. Embodiments of the invention include both single-criteria and double-criteria partitioning methods. In double-criteria embodiments, the vectoring cancellation VCE chips are first partitioned into two or more victim DSL line groups and then in each group the VCE chips are further partitioned by disturber DSL line processing. Alternately, the vectoring cancellation VCE chips are first partitioned into two or more disturber DSL line groups and then within each group further partitioned by victim DSL line processing. By partitioning the computation as described herein, the invention reduces the bandwidth and the number of links between the chips, without too much co-ordination complexity. This allows crosstalk cancellation across larger vectored groups.
摘要:
A twisted resin panel of typically several feet in length can be twisted after being subject to heat, pressure, and a rotation assembly. In one implementation, a manufacturer can clamp opposing ends of a heated resin panel, such as a panel comprising a one or more layers (e.g., tie/EVA layer, image layer(s), etc.) thermoformed within opposing resin sheet layers. The manufacturer can then elevate the resin panel, and then twist at least one end of the resin panel to a specified degree to achieve a desired aesthetic. Upper securing means (e.g., vertical clamps, rig hardware) at the upper end of the resin panel can be configured to move up or down during the twist of the resin panel in order to accommodate length variations thereof. Upon twisting, the resin panel will then cool into the desired position, and thus be used for any number of decorative architectural purposes.
摘要:
Methods and apparatuses for reducing effects of impulse noise in a DSL transmitter receiver device are described. According to certain embodiment, the method includes using a periodicity associated with the impulse noise affecting a DSL transmitter receiver device to determine data frames that are affected by the impulse noise, and sending a reduced data rate during those frames. In certain embodiments, no data is sent during those frames. The method further includes using a high margin bits and gain table, instead of a normal bits and gain table.