Abstract: A system may include various user devices coupled to a cellular network. Each user device may be associated with a respective member of a predetermined population. The system may further include a contact management server coupled to the cellular network. The contact management server may determine a previous contact event of a user device among the user devices. The contact management server may further determine a selection of a first contact type for contacting the user device. The first contact type may be different from a second contact type of the previous contact event. The contact management server may further transmit a command that triggers the contact event of the user device based on the first contact type.

Abstract: A system may include various user devices coupled to a cellular network. Each user device may be associated with a respective member of a predetermined population. The system may further include a contact management server coupled to the cellular network. The contact management server may determine a previous contact event of a user device among the user devices. The contact management server may further determine a selection of a first contact type for contacting the user device. The first contact type may be different from a second contact type of the previous contact event. The contact management server may further transmit a command that triggers the contact event of the user device based on the first contact type.

Abstract: A method may include determining whether to perform a coronavirus diagnostic test on a member of a predetermined population. The method may further include sending, in response to determining that the coronavirus diagnostic test should be performed on the member, a coronavirus testing kit to the member. The coronavirus testing kit may include a return shipping container, a substrate, and a specimen transport container configured to store a biological specimen. The method may further includes determining whether the biological specimen is received at a laboratory facility from the member. The method may further include transmitting, to at least one user device associated with the member, a notification regarding a coronavirus infection diagnosis based on the biological specimen.

Abstract: A system may include various user devices coupled to a cellular network. Each user device may be associated with a respective member of a predetermined population. The system may further include a contact management server coupled to the cellular network. The contact management server may determine a previous contact event of a user device among the user devices. The contact management server may further determine a selection of a first contact type for contacting the user device. The first contact type may be different from a second contact type of the previous contact event. The contact management server may further transmit a command that triggers the contact event of the user device based on the first contact type.

Abstract: An improved mixed oscillator-and-external excitation model and methods for estimating the model parameters, for evaluating model quality, and for combining it with known in the art methods are disclosed. The improvement over existing oscillators allows the model to receive, as an input, all except the most recent point in the acquired data. Model stability is achieved through a process which includes restoring unavailable to the decoder data from the optimal model parameters and by using metrics to select a stable restored model output. The present invention is effective for very low bit-rate coding/compression and decoding/decompression of digital signals, including digitized speech, audio, and image data, and for analysis, detection, and classification of signals. Operations can be performed in real time, and parameterization can be achieved at a user-specified level of compression.

Abstract: A system including a substrate with an adhesive panel, a shipping item removably attached to the adhesive panel, and a package envelope including the shipping item removably attached to the adhesive panel, where a location of the adhesive panel within the package envelope renders the package envelope suitable for an automated handling process of a shipping authority.