Abstract: Computer instructions, computing device and method for processing seismic data under-sampled in an angle domain, the seismic data corresponding to a reverse time migration, three-dimensional, angle domain common image gather (ADCIG). The method includes receiving the seismic data; calculating, based on the seismic data, shot and receiver wave-fields with an RTM wave propagation engine; applying a wave-fields decomposition algorithm to obtain a propagation direction for the shot and receiver wave-fields; forming the ADCIG by applying an image condition to the shot and receiver wave-fields; determining that specular energies of the ADCIG are under-sampled around a reflection angle; during the step of forming the ADCIG, extrapolating the specular energies to a neighborhood of the reflection angle; and generating an image of a subsurface that is being surveyed based on the extrapolated specular energies.

Abstract: A casting or splinting device comprises a plastic casting body formed into various configurations for immobilizing a bone fracture or the like. The casting body is filled with small spherical granules having a smooth and slippery surface. The casting body is sealed and provided with an outlet port for aspirating air from within the casting body. Aspiration of air from the casting body results in a rigid casting or splint.

Abstract: A method for calculating angle domain common image gathers (ADCIGs). The method includes calculating a source wavefield pF of a seismic source; calculating a receiver wavefield pB of a seismic receiver; applying an algorithm of anti-leakage Fourier transform (ALFT) to transform the source wavefield pF to a wavenumber domain; applying the ALFT algorithm to the receiver wavefield to transform the receiver wavefield in the wavenumber domain; determining an imaging condition to the ALFT source and receiver wavefields in the wavenumber domain; computing a reflection angle ? and an azimuth angle ? of the source wavefield pF and receiver wavefield pB in the wavenumber domain; calculating the ADCIGs in the wavenumber domain; and applying an inverse fast Fourier transform (FFT) to determine the ADCIGs in the space domain.

Abstract: A channel estimation method of an Orthogonal Frequency Division Multiplexing (OFDM) system and a corresponding receiving apparatus are provided. The technical solutions use the receiving apparatus to firstly perform channel estimation in time dimension on received signals, obtain channel information of pilot points from an effective sub-carrier frequency band on a frequency domain of each OFDM symbol, obtain information of the pilot points on frequency bands outside the effective sub-carrier frequency band by adding the information of the pilot points, and then perform Inverse Fast Fourier Transform (IFFT), windowing, zero-padding, and Fast Fourier Transform (FFT) to obtain a channel frequency response, so as to obtain a channel estimation result. The technical solutions can achieve goals of restraining an edge effect and improving accuracy of the channel estimation.

Abstract: A collaboration system includes a remote server system and one or more client devices connected to the remote server system, at least one of which being a first client device that includes a touch screen display. Upon receipt of a user instruction, the collaboration system opens a document at the first client device and displays the document on the touch screen display to a first user. The collaboration system detects a first comment on the document from the first user through interacting with the touch screen display. The collaboration system receives a second comment on the document from the remote server system. The second comment is generated by a second user of a second client device and transmitted to the remote server system through a computer network. The collaboration system displays, concurrently, the first comment and the second comment on the touch screen display.

Abstract: A needle shield assembly for enclosing a needle cannula includes a needle cannula having a needle hub at a proximal end thereof and a sharp distal end. A needle shield adapter is mounted to the needle hub and a needle shield is connected to the adapter. The needle shield is moveable between a first position enclosing the needle cannula and a second position exposing the needle cannula for use.

Abstract: A system to process unstructured data is provided. An example system to process unstructured data comprises a receiver to access a source of unstructured data, an entity extractor to extract entity instances from the source of unstructured data and organize the extracted entity instances into an entity instance table, a pattern generator to generate a pattern comprising a key entity and one or more non-key entities associated with the key entity based on the entity instance table, and a dataset generator to generate a two-dimensional table based on the pattern and the entity instance table.

Abstract: A casting or splinting device comprises a plastic casting body formed into various configurations for immobilizing a bone fracture or the like. The casting body is filled with small spherical granules having a smooth and slippery surface. The casting body is sealed and provided with an outlet port for aspirating air from within the casting body. Aspiration of air from the casting body results in a rigid casting or splint.

Abstract: A casting or splinting device comprises a plastic casting body formed into various configurations for immobilizing a bone fracture or the like. The casting body is filled with small spherical granules having a smooth and slippery surface. The casting body is sealed and provided with an outlet port for aspirating air from within the casting body. Aspiration of air from the casting body results in a rigid casting or splint.