摘要:
A drive configuration for a skid steered vehicle comprises a pair of electric motors for propulsion of the vehicle, one each coupled to drive a respective track on a respective side of the vehicle, and one or more electric steer motors coupled through a differential gear mechanism to impose a speed difference between the tracks. An associated control system controls the current to each motor so that substantial contributions to the differential torque to turn the vehicle are made both by the steer motors and by the propulsion motors, in variable proportions preferably as a function of the vehicle speed.
摘要:
A method of testing an organic sample to provide an indication of the level of bacteria and/or number of somatic cells present in the sample, the method including collecting the sample and contacting the sample with a reagent which reacts with ATP to produce light emissions, and subsequently, at the beginning (O) of a measurement period (A, B), contacting the sample with an extractant in the presence of the reagent, the extractant rupturing cells present in the sample to release cell-bound ATP to react with the reagent to produce light emissions, and immediately after contacting the sample with the extractant, detecting the light emissions with a light detecting device (18), and the method includes during an initial measurement period (A) immediately after contacting the sample with the extractant, detecting the level of light emissions, and in a subsequent measurement period (B), detecting the level of light emissions, statistically analysing the detected values to determine a rate of change of light emissions during the subsequent measurement period, due to cell-bound ATP being released and reacting with the reagent, and at least where the thus determined rate of change of light emissions indicates a level of bacteria and/or somatic cells in the sample above a threshold, generating a signal (33).
摘要:
An adjustable grill apparatus having a movable radiant gas burner unit. The adjustable grill apparatus is supported on the top cooking surface of a conventional outdoor grill. The movable radiant gas burner unit is supported on a support assembly having side panels and support panels for pivoting adjustable positioning between a substantially vertical position supported on the grill and substantially horizontal positions supported on the support assembly. The movable radiant burner unit is operable at a constant or variable operating temperature between high and low temperatures to obtain the desired cooking rate for the food item to be cooked.
摘要:
A self-energising brake assembly, particularly for braking a drive shaft of a heavy tracked vehicle such as a tank, has a pair of discs carrying friction pads borne to rotate with the shaft. These friction discs are located to either side of a central non-rotating water-cooled disc assembly. A control brake disc is also borne to rotate with the shaft but capable of turning relative to the same via a ball screw assembly. To apply the brake the control disc is retarded relative to the shaft by means of an associated caliper, which causes relative axial movement between the inner and outer rings of the ball screw. This movement drives the friction disc axially along the shaft, on a ball spline, towards the friction disc, thus clamping the non-rotating disc between the two friction discs and braking the shaft.
摘要:
A slurry coating composition is described, which is very useful for enriching the surface region of a metal-based substrate with aluminum. The composition includes colloidal silica and particles of an aluminum-based powder, and is substantially free of hexavalent chromium. The slurry may include colloidal silica and an alloy of aluminum and silicon. Alternatively, the slurry includes colloidal silica, aluminum or aluminum-silicon, and an organic stabilizer such as glycerol. The slurry exhibits good thermal and chemical stability for extended periods of time, making it very useful for industrial applications. Related methods and articles are also described.
摘要:
A method for observing voltage contrast from buried structures in SOI. The method includes depositing a thin transparent metal layer over the BOx to dissipate charging of the oxide, and using a low FIB beam current to avoid damage due to ion implantation and direct ion beam damage.
摘要:
A method and system for assisting a user in interacting with a multi-modal dialog system (104) is provided. The method includes interpreting a “What Can I Do? (WCID)” question from a user in a turn of the dialog. A multi-modal grammar (212) is generated, based on the current context of the dialog. One or more user multi-modal utterances are generated, based on the WCID question and the multi-modal grammar. One or more user multi-modal utterances are conveyed to the user.
摘要:
A method for querying a database (106) in a task based dialog system (102) is provided. The task based dialog system (102) comprises a task model (110), a user model (114), a dialog manager (112), a query generator (116), and a mapper (120). The method interprets a user input required b complete a task. A query is generated for querying the database (106). If the generated query is not suitable for querying the database (106) it is converted to a suitable query. The suitable query is executed to complete the task.
摘要:
A method of finding an unknown value from within a range of values is disclosed that divides the range into weighted subranges and then, beginning with an arbitrary search value within the range, performs a number of simple comparisons to determine the value for each subrange that will result in a match with the target value. This method can also detect those cases where the target value lies outside the range. In one embodiment, the method of finding an unknown value within a range of values is applied to impedance matching. In this embodiment, the output impedance of a pin on an integrated circuit is automatically matched to the impedance of the load connected to it. The output driver has a controllable impedance that can be adjusted within a specific range of impedances to match the external load impedance it is to drive.
摘要:
An SRAM memory cell is provided having a pair of cross-coupled CMOS inverters. The sources of the pull-up transistors forming each of the CMOS inverters are coupled to VCC through parasitic resistance of the substrate in which each is formed. The source of the p-type pull-up transistor is therefore always at a potential less than or equal to the potential of the N-well such that the emitter-base junction of the parasitic PNP transistor cannot become forward biased and latch-up cannot occur.