摘要:
Techniques are disclosed for optimizing and maintaining cyclic biped locomotion of a robot on an object. The approach includes simulating trajectories of the robot in contact with the object. During each trajectory, the robot maintains balance on the object, while using the object for locomotion. The approach further includes determining, based on the simulated trajectories, an initial state of a cyclic gait of the robot such that the simulated trajectory of the robot starting from the initial state substantially returns to the initial state at an end of one cycle of the cyclic gait. In addition, the approach includes sending joint angles and joint velocities of the initial state to a set of joint controllers of the robot to cause a leg of the robot to achieve the initial state so the robot moves through one or more cycles of the cyclic gait.
摘要:
Techniques for providing a route based on route-oriented vehicle trajectories are described. This disclosure describes receiving GPS logs and extracting route-oriented vehicle trajectory content from the GPS log data to pertain to a single trip. Next, the process maps each route-oriented vehicle trajectory to a corresponding road segment to construct a landmark graph. A landmark is a road segment frequently visited by route-oriented vehicles. The process includes receiving a user query with a starting point and a destination point; searching the landmark graph for a sequence of landmarks with corresponding transition times and a least amount of travel time. Then the process identifies and connects sets of road segments between each pair of consecutive landmarks, and displays a route to a user with a nearest landmark to the starting point, other landmarks along the route, and another nearest landmark to the destination point.
摘要:
A controller for floating-base humanoid robots that can track motion capture data while maintaining balance. Briefly, the controller includes a proportional-derivative (PD) controller that is adapted to compute the desired acceleration to track a given reference trajectory at every degree-of-freedom (DOF) of the robot including the six unactuated ones of the floating base. Second, the controller includes a component (joint torque optimization module) that computes the optimal joint torques and contact forces to realize the desired accelerations given by the first component (i.e., the PD controller). The joint torque optimization module performs this computation considering the full-body dynamics of the robot and the constraints on contact forces. The desired accelerations may not be feasible for the robot due to limits in normal contact forces and friction (e.g., the robot sometimes cannot exactly copy or perform the modeled human motion defined by motion capture data).
摘要:
Compositions and methods are provided for selection and enrichment of a target gene from a library of polynucleotide sequences such as might be formed from a genome or by random mutagenesis of a genetic sequence. The selection and enrichment occurs in aqueous droplets formed in an emulsion that compartmentalize individual polynucleotides from the library or a plurality of polynucleotides that may include polynucleotides not derived from the library, transcription and translation reagents and optionally additional chemical and enzyme reagents. The selection and enrichment method utilizes a polynucleotide adaptor which when ligated to the polynucleotide fragment enables amplification to occur in the presence of an adaptor specific primer.
摘要:
Attributes including presence and organization information for contacts of a subscriber are used in determining a subset of contacts matching a predefined criterion. Determined subset of contacts is sent as an alert to notify the subscriber to the subsets' nearby proximity.
摘要:
A spoon has a bowled area having a base and a surrounding edge extending around the base, and an elongated handle attached to the bowled area, with the handle having a base. A plurality of holes are provided in the base of the handle adjacent the bowled area.
摘要:
Short POI titles are generated by removing unnecessary administrative area prefixes from existing POI titles and replacing necessary administrative area prefixes with shorter aliases. Administrative area prefixes are identified and analyzed to determine whether they are necessary. The analysis includes determining (1) whether the remainders with the prefixes excluded include a common suffix as a prefix, and (2) whether the remainders are unique in an applicable metropolis area. If a remainder does not include as a prefix a common suffix and is unique in the applicable metropolis area, the corresponding prefix is determined unnecessary and removed from the existing POI title to generate a short POI title. Otherwise, the corresponding prefix is determined necessary and replaced with a shorter alias to generate a short POI title.
摘要:
An endoscope system of one aspect includes a probe including a CMOS image sensor or sensors, and a conductor or conductors for transmitting an image signal outward from the CMOS image sensor or sensors. The system also includes a connector system including one or more integrated circuits and/or connectors, receiving a signal from the CMOS image sensor or sensors and processing that signal. The system also includes a sensor power supply for the CMOS image sensor or sensors, and a remainder power supply for the remainder of the endoscope system. Other endoscope systems, angiographic systems, devices, and methods associated therewith are also disclosed.
摘要:
Described is a technology by which raw GPS data is processed into segments of a trip, with a predicted mode of transportation (e.g., walking, car, bus, bicycling) determined for each segment. The determined transportation modes may be used to tag the GPS data with transportation mode information, and/or dynamically used. Segments are first characterized as walk segments or non-walk segments based on velocity and/or acceleration. Features corresponding to each of those walk segments or non-walk segments are extracted, and analyzed with an inference model to determine probabilities for the possible modes of transportation for each segment. Post-processing may be used to modify the probabilities based on transitioning considerations with respect to the transportation mode of an adjacent segment. The most probable transportation mode for each segment is selected.
摘要:
This disclosure describes a map-matching module that supports a Global Positioning System (GPS) and provides a user with a best match trajectory corresponding to GPS sampling points taken at a low sampling rate. The best match trajectory is based upon a spatial-temporal analysis.