Abstract: A system for navigating a virtual environment using seated walking-in-place footstep locomotion includes a virtual reality device, a first sensing device, and a second sensing device. The first sensing device senses the first footstep locomotion of one of feet of a user seated in a physical environment to generate and transmit a first stepping signal to the virtual reality device. The second sensing device senses the second footstep locomotion of another of the feet of the user seated in the physical environment to generate and transmit a second stepping signal to the virtual reality device. The virtual reality device navigates the virtual environment in a virtual locomotion mode based on a combination of the first stepping signal and the second stepping signal.

Abstract: Disclosed in the present invention is a method for preparing and certifying a novel coronavirus nucleocapsid protein (nCOV N protein) reference material, the method including: purification and dilution of a raw material of the nCOV N protein; preliminary uniformity test and packaging of solution of a candidate nCOV N protein reference material; characterization of physicochemical properties of the solution of the candidate nCOV N protein reference material in the packaging units; uniformity and stability test of the nCOV N protein reference material in the packaging unit; measurement of standard N protein content of the nCOV N protein reference material, determination and statistical test of standard value of the nCOV N protein reference material; and uncertainty assessment of certified result of the standard value of the nCOV N protein reference material.

Abstract: The present invention relates to a new electronic component package and its manufacturing method, especially the package of an optoelectronic component. The package comprises an electronically conductive base, an electronically conductive cap, and at least one electronic component. The base has an upper surface, a lower surface, and at least one through hole sealed with a conducting feedthrough surrounded by a ring of insulating material. The electronic component is fixed on the upper surface of the base and is electrically connected to the conducting feedthroughs and/or the base. The base and the cap are sealed by welding.

Abstract: A system for monitoring maintenance for manufacturing apparatuses in a facility is provided. The system includes at least one manufacturing apparatus, the manufacturing apparatus including an RF identification tag and a module, and a control system.

Abstract: Systems and methods for object guidance and collision avoidance are provided. One system includes a location sensor disposed on a movable crane. The system also includes a plurality of sensors disposed on a plurality of objects within a facility. The system further includes a controller having a receiver for monitoring signals transmitted from the location sensor disposed on a movable crane and the plurality of sensors disposed on a plurality of objects within the facility. The controller is configured to generate a travel path for the movable crane to move an object coupled with the movable crane based on the one or more intersection regions and generate an output signal to an alarm device to provide an alert, when at least one object of the plurality of objects is within a predetermined proximity of at least the object being moved by the crane.

Abstract: Systems and methods for object guidance and collision avoidance are provided. One system includes a location sensor disposed on a movable crane. The system also includes a plurality of sensors disposed on a plurality of objects within a facility. The system further includes a controller having a receiver for monitoring signals transmitted from the location sensor disposed on a movable crane and the plurality of sensors disposed on a plurality of objects within the facility. The controller is configured to generate a travel path for the movable crane to move an object coupled with the movable crane based on the one or more intersection regions and generate an output signal to an alarm device to provide an alert, when at least one object of the plurality of objects is within a predetermined proximity of at least the object being moved by the crane.

Abstract: A system for monitoring maintenance for manufacturing apparatuses in a facility is provided. The system includes at least one manufacturing apparatus, the manufacturing apparatus including an RF identification tag and a module, and a control system.

Abstract: The present invention provides a method for resource information backup operation based on peer to peer network, comprising: an initiating node sending an out-of-domain backup node determining request to a connecting node in backup domain, and said out-of-domain backup node determining request including the resource global identifier of said resource information to be backed up, and the connecting node in said backup domain and said host node in which the resource information is saved have different domain identifiers; the connecting node in said backup domain determining an out-of-domain backup node according to information of said resource global identifier and out-of-domain backup rules, and sending routing information of said out-of-domain backup node to said initiating node; and said initiating node sending an out-of-domain backup operation request to said out-of-domain backup node according to said routing information, and said out-of-domain backup node implementing corresponding processing according to

Abstract: The present invention provides a method for resource information backup operation based on peer to peer network, comprising: an initiating node sending an out-of-domain backup node determining request to a connecting node in backup domain, and said out-of-domain backup node determining request including the resource global identifier of said resource information to be backed up, and the connecting node in said backup domain and said host node in which the resource information is saved have different domain identifiers; the connecting node in said backup domain determining an out-of-domain backup node according to information of said resource global identifier and out-of-domain backup rules, and sending routing information of said out-of-domain backup node to said initiating node; and said initiating node sending an out-of-domain backup operation request to said out-of-domain backup node according to said routing information, and said out-of-domain backup node implementing corresponding processing according to