摘要:
One feature pertains to a radiation dosimeter comprising a microdosimeter cell array that includes a first microdosimeter cell having a first semiconductor volume configured to generate a first current in response to incident radiation. The first semiconductor volume may have at least one of a first size, a first shape, a first semiconductor type, and/or a first semiconductor doping type and concentration that is associated with a first biological cell type or a first biological cell component type. The dosimeter may further comprise a processing circuit communicatively coupled to the microdosimeter cell array and configured to generate a signal based on the first current. The signal generated may be indicative of an amount of radiation absorbed by the microdosimeter cell array. A display may be utilized by the dosimeter to show a radiation level reading based on the signal generated.
摘要:
A materials handling vehicle is provided comprising: a frame; wheels supported on the frame; a traction motor coupled to one of the wheels to effect rotation of the one wheel; a speed control element operable by an operator to define a speed control signal corresponding to a desired speed of the traction motor; a system associated with a steerable wheel to effect angular movement of the steerable wheel; and control apparatus coupled to the speed control element to receive the speed control signal, and coupled to the traction motor to generate a drive signal to the traction motor in response to the speed control signal to control the operation of the traction motor. The control apparatus may determine an acceleration value for the traction motor based on at least one of an angular position of the steerable wheel, a speed of the traction motor and a current position of the speed control element as defined by the speed control signal.
摘要:
A method and system for proximity detection, recognition and classification of a wireless local area network (WLAN) enabled device without a WLAN infrastructure. The proximity recognition system monitors WLAN communications at one or more known locations. The proximity of a transmitter is sensed by examining receive signal strength as the mobile device engages in a sequence of protocol data unit exchanges requesting WLAN association. An identifier of the mobile device may be provided in this association request. Association requests may be periodic or may be prompted by a specific response from the WLAN proximity recognition device which may operate on one or a plurality of WLAN channels.
摘要:
The present invention relates to a backpack hunting blind that may be used, for example, as a hunter blind and backpack frame or the like. In general, the device comprises a partially collapsible mainframe, a seat, a back angle support, and a camouflage cover. The device comprises a partially collapsible mainframe having a first pair of vertical supporting tubes, preferably constructed of aluminum tubing. The first pair of vertical supporting tubes may further contain a second pair of vertical tubes inside which can be pulled out for supporting the camouflage cover. The seat is rotatable and can be rotated from the originally vertical position to a horizontally operational position. Shoulder straps are provided for hunter to carry the device. The device is lightweight, compact, easy to carry, assemble and disassemble.
摘要:
The present disclosure provides for drag reduction on a moving object through the atmosphere, thus increasing fuel efficiency. This is accomplished by attaching an inflatable boattail (i.e. drag reducer) to the aft face or rear end of a vehicle or trailer, thus delaying the flow separation to a point further downstream and mitigating the intensity of the negative pressure on the aft face.
摘要:
A computer-implemented method is disclosed. The method may include receiving a portion of a personal name and converting the portion to a normalized portion by reducing the one or more characters to their simplest equivalents. The method may further include searching a typographical index tree and a phonetic index tree to identify one or more keys matching the normalized portion. The method may further include compiling, ranking, and presenting a plurality of suggested matches identified during the searching.
摘要:
An anti-biofouling material for use on marine equipment is described, the anti-biofouling material comprising a polymer system comprising a hydrophobically-modified base polymer, the hydrophobically-modified base polymer comprising a base polymer having a backbone and a hydrophobically derivatized chain extender coupled to said backbone of said base polymer, wherein the hydrophobically derivatized chain extender comprises a hydrophobic moiety. The anti-fouling casing comprises a hydrophobic surface that serves to prevent biofouling of the surface.
摘要:
A rheometer uses a removable integrated environmental control cartridge that includes at least one environmental control unit, at least one supply port operative to interact with the supply port for a chassis of the rheometer. It also includes at least one mechanical alignment interface that is operative to interact with the mechanical alignment interface of the chassis to align both the mobile part with respect to the fixed part and the chassis supply port with respect to the environmental control cartridge part. In another general aspect, a rheometer can use an environmental control cartridge interface operative to report an identity of the integrated environmental control cartridge to an environmental control cartridge identification interface of its chassis.
摘要:
An approach is provided for a publish/subscribe mechanism over an ad-hoc mesh network. A module receives a request to either publish or subscribe to information provided over an ad-hoc mesh network. The module then determines at least one data schema associated with the information, wherein an identification of the information for publication or subscription is based, at least in part, on the at least one data schema.
摘要:
Systems and methods for producing ultra-short optical pulses are provided. According to various embodiments, optical pulses are generated, stretched, amplified, and compressed to ultra-short lengths. In order to achieve the ultra-short lengths, dispersion compensation is provided prior to amplification and optionally before compression. Dispersion compensation prior to amplification can be performed by passing the optical pulses through a polarization-maintaining fiber that includes a nonlinear Bragg grating. In some embodiments, the optical pulses are repeatedly circulated through the polarization-maintaining fiber that includes the nonlinear Bragg grating. Dispersion compensation before compression can be achieved by passing the amplified optical pulse through another length of polarization-maintaining fiber.