Abstract: Disclosed are various embodiments for an anti-reflux enema bag having a pulley restrictor that acts as a waterflow restrictor, where the enema bag is leakproof, easy-to-clean, and provides a steady flow of solution. An enema bag system includes an enema bag, a nozzle comprising a nozzle outlet, and an anti-reflux coupler positioned between the enema bag and the nozzle through which the solution passes from the enema bag to the nozzle outlet. The anti-reflux coupler comprises an inlet for receiving at least a portion of the solution from the enema bag; an outlet for expelling the solution into the nozzle; and a check valve configured to prevent reflux of the solution from the nozzle. The enema bag system further comprises a pulley restrictor configured to selectively control a speed at which the solution is introduced into the nozzle and expelled from the nozzle outlet.

Abstract: Disclosed are various embodiments for an anti-reflux nasal aspirator that includes a nozzle comprising a nozzle outlet, a bulb configured to provide suction at the nozzle outlet in response to a squeezing force applied to the bulb, an anti-reflux coupler positioned between the bulb and the nozzle through which air passes from the bulb to the nozzle, and a one-way air valve positioned in an aperture located at a base of the bulb. The anti-reflux coupler may include a check valve configured to prevent reflux of debris into the bulb. The check valve may include one of an umbrella valve; a duckbill valve; a slit-cutting valve; and a flapper valve.

Abstract: Disclosed are various embodiments for an anti-reflux enema bucket system that is leakproof, easy to disassemble and clean, prevents reflux, has components that can be independently cleaned and sanitized, and controls a rate at which water is expelled from a nozzle outlet. In various embodiments, the enema bucket system includes an enema bucket having an opening at a top for filling the enema bucket with solution, a nozzle comprising a nozzle outlet, an anti-reflux coupler positioned between the enema bucket and the nozzle through which the solution passes from the enema bucket to the nozzle outlet; and tubing fluidly coupling the enema bucket, the anti-reflux coupler, and the nozzle. A pulley restrictor may selectively control a speed at which the solution is introduced into the nozzle and expelled from the nozzle outlet.

Abstract: An invention relates to method and apparatus of a location assurance system and particularly, although not exclusively, the present invention also relates to method and apparatus for assuring location data integrity with minimum location disclosure. The present invention also relates to method and apparatus for assuring location data integrity with minimum location disclosure with protocols to authenticate both spatial and spatio-temporal predicates.

Abstract: A privacy-preserving location monitoring system is provided, comprising monitoring hosts and a server. Immense resource requirement in large-scale location monitoring is lessened by allowing peripheral devices of users to bond to only one host. A peripheral device's one or more identity resolving keys (IRKs) retrieved by the host are sent to the server so as to register the IRKs to the server. The server propagates the IRKs to all other hosts. Furthermore, each host only stores the IRKs of peripheral devices frequently visiting the host. An incoming IRK not known by the host is sent to the server for resolving an identity of a peripheral device sending this IRK. The system is implementable in Bluetooth Low Energy (BLE) technology. Based on privacy features of BLU, different privacy protection mechanisms, including opt-in/out, k-anonymity and granularity-based anonymity, are provided.

Abstract: An invention relates to method and apparatus of a location assurance system and particularly, although not exclusively, the present invention also relates to method and apparatus for assuring location data integrity with minimum location disclosure. The present invention also relates to method and apparatus for assuring location data integrity with minimum location disclosure with protocols to authenticate both spatial and spatio-temporal predicates.

Abstract: A method for privacy-preserving proximity detection comprising a grid-and-hashing paradigm, an optimal grid overlay and multi-level grids, which increases the detection accuracy while saving the wireless bandwidth. Furthermore, the present invention also provided a client-side location update scheme and the server-side update handling procedure for continuous proximity detection. The present invention is efficient and scalable under various system parameters and user moving speeds, in mobile geo-social networks.

Abstract: A method and an apparatus for authenticating location-based services without compromising location privacy, which comprises a comprehensive solution that preserves unconditional location privacy when authenticating either range queries using three authentication schemes for R-tree and grid-file index, together with two optimization techniques, or k-nearest neighbor queries using two authentication schemes for R-tree and Voronoi Diagram index.

Abstract: A method for privacy-preserving proximity detection comprising a grid-and-hashing paradigm, an optimal grid overlay and multi-level grids, which increases the detection accuracy while saving the wireless bandwidth. Furthermore, the present invention also provided a client-side location update scheme and the server-side update handling procedure for continuous proximity detection. The present invention is efficient and scalable under various system parameters and user moving speeds, in mobile geo-social networks.

Abstract: A method and an apparatus for authenticating location-based services without compromising location privacy, which comprises a comprehensive solution that preserves unconditional location privacy when authenticating either range queries using three authentication schemes for R-tree and grid-file index, together with two optimization techniques, or k-nearest neighbor queries using two authentication schemes for R-tree and Voronoi Diagram index.