Abstract: A waveguide display includes a substrate, one or more projectors for projecting display light for different fields of view, two or more input gratings configured to couple the display light for different fields of view into the substrate, and a two-dimensional grating characterized by three or more different grating vectors that include grating vectors same as the grating vectors of the two or more input gratings. The two-dimensional grating is configured to couple the display light for different fields of view out of the substrate at a two-dimensional array of locations of the substrate. The two-dimensional grating includes a two-dimensional array of grating elements aligned along a plurality of directions or a plurality of layers of one-dimensional gratings characterized by different grating vectors.

Abstract: Provided herein are compounds, pharmaceutical compositions, and methods for treating a SARS-CoV-2 infection.

Abstract: The present disclosure provides an anti-loosening screw pair and an anti-loosening screw component. The screw pair includes a first screw component provided with a first screw thread and a second screw component whose outer wall surface is provided with a second screw thread. The first and second screw components are in threaded connection. In a direction of the first screw component being screwed into the second screw component, sides of the first and second screw threads pressing against each other are formed into force-bearing fitting faces respectively, and opposite sides thereof are formed into non-force-bearing fitting regions respectively. At least one of the force-bearing fitting faces and the non-force-bearing fitting regions of the first and the second screw components is provided with a stopper so as to prevent radial displacement between the first and the second screw components.

Abstract: Provided herein are compounds, pharmaceutical compositions, and methods for treating a SARS-CoV-2 infection.

Abstract: Provided herein are compounds, pharmaceutical compositions, and methods for treating a SARS-CoV-2 infection.

Abstract: The technology disclosed in this patent document can be used to implement an optical device for generating broadband optical pulses, including an optical waveguide having different waveguide structures at different locations along the optical waveguide and with varying dimensions or pressure gradient that change adiabatically along the different locations to enable non-linear four wave mixing over a broad spectral range.

Abstract: The present disclosure provides an anti-loosening screw pair and an anti-loosening screw component. The screw pair includes a first screw component provided with a first screw thread and a second screw component whose outer wall surface is provided with a second screw thread. The first and second screw components are in threaded connection. In a direction of the first screw component being screwed into the second screw component, sides of the first and second screw threads pressing against each other are formed into force-bearing fitting faces respectively, and opposite sides thereof are formed into non-force-bearing fitting regions respectively. At least one of the force-bearing fitting faces and the non-force-bearing fitting regions of the first and the second screw components is provided with a stopper so as to prevent radial displacement between the first and the second screw components.

Abstract: The present disclosure provides an anti-loosening screw pair and an anti-loosening screw component. The screw pair includes a first screw component provided with a first screw thread and a second screw component whose outer wall surface is provided with a second screw thread. The first and second screw components are in threaded connection. In a direction of the first screw component being screwed into the second screw component, sides of the first and second screw threads pressing against each other are formed into force-bearing fitting faces respectively, and opposite sides thereof are formed into non-force-bearing fitting regions respectively. At least one of the force-bearing fitting faces and the non-force-bearing fitting regions of the first and the second screw components is provided with a stopper so as to prevent radial displacement between the first and the second screw components.

Abstract: The present disclosure provides an anti-loosening screw pair and an anti-loosening screw component. The screw pair includes a first screw component provided with a first screw thread and a second screw component whose outer wall surface is provided with a second screw thread. The first and second screw components are in threaded connection. In a direction of the first screw component being screwed into the second screw component, sides of the first and second screw threads pressing against each other are formed into force-bearing fitting faces respectively, and opposite sides thereof are formed into non-force-bearing fitting regions respectively. At least one of the force-bearing fitting faces and the non-force-bearing fitting regions of the first and the second screw components is provided with a stopper so as to prevent radial displacement between the first and the second screw components.

Abstract: The technology disclosed in this patent document can be used to implement an optical device for generating broadband optical pulses, including an optical waveguide having different waveguide structures at different locations along the optical waveguide and with varying dimensions or pressure gradient that change adiabatically along the different locations to enable non-linear four wave mixing over a broad spectral range.

Abstract: A method for simulating a posture of a flexible cable based on a spring-mass model combining bending and torsion includes: establishing a physical property model of the cable, wherein a torsion property is represented by a torsion spring attached at each 55 cable segment; obtaining an initial position of each discrete mass point based on a total length of the cable and the number of the cable segments; identifying discrete mass points at both ends as fixed points, and obtaining their position information; calculating stress information of other discrete mass points whose position information is not determined based on the physical property model; sequentially calculating 10 10 equilibrium positions of the other discrete mass points by using the stress information and the initial positions to obtain their the position information; and simulating a stable posture of the cable based on the position information of the fixed points and the other discrete mass points.

Abstract: The present disclosure provides a method and a device for automatically routing a multi-branch cable, so as to optimize branch points, thereby to acquire an optimal routing scheme and improve the routing efficiency.

Abstract: The present disclosure provides a method and a device for automatically routing a multi-branch cable, so as to optimize branch points, thereby to acquire an optimal routing scheme and improve the routing efficiency.

Abstract: A method for simulating a posture of a flexible cable based on a spring-mass model combining bending and torsion includes: establishing a physical property model of the cable, wherein a torsion property is represented by a torsion spring attached at each 55 cable segment; obtaining an initial position of each discrete mass point based on a total length of the cable and the number of the cable segments; identifying discrete mass points at both ends as fixed points, and obtaining their position information; calculating stress information of other discrete mass points whose position information is not determined based on the physical property model; sequentially calculating 10 10 equilibrium positions of the other discrete mass points by using the stress information and the initial positions to obtain their the position information; and simulating a stable posture of the cable based on the position information of the fixed points and the other discrete mass points.

Abstract: A computerized prefab architect design system (CPAD) and method for the fabrication of frame-structured buildings with all functions, including an integrating device for integrating building design elements including customer acknowledged floor plans, plumbing layouts, electricity wiring layouts and structure/strength parameters into an assembly drawing; a dividing device for forming segments and layouts of wall panels, floor/ceiling panels and roof panels, layouts of roof trusses, and segments and layouts of plumbing, wiring and jointers in accordance with a segmentation rule for buildings comprising a local building specification, segmentation based on a loading size of a shipping container, strength and structural requirements of buildings, requirements for convenient on-site work and flexible assembly lines at factories; a generating device for generating a polygon stencil for components of the prefab architect based on said segments and layouts, said stencil including building frames, functional boards t