Abstract: Apparatuses, systems, and methods include a PMUT mechanically coupled to, and electrically isolated from, a receive sensor via a common flexible membrane. The receive sensor may be an optical sensor or a receive only PMUT providing a feedback signal based on a received waveform, VRO(t), to modify the drive voltage Vd(t) of the PMUT. The feedback signal may be used to modify the drive voltage Vd(t) of the PMUT to shorten the ring-down period and may be based on the received waveform, VRO(t), and a desired receive waveform, VROD(t), which may be selected to optimize one or more of Q, bandwidth, resonant frequency, and spectral content of the drive voltage Vd(t). The drive voltage Vd(t) may be modified to a minimize a difference between VRO(t), and a desired receive waveform, VROD(t), or a closed loop weighted (?, ?) sum of the energy of VRO (t) and the blind zone duration.

Abstract: Methods, apparatuses, and computer-readable media for protecting confidential data on a network. An embodiment of the inventive method comprises the steps of: monitoring 110 data directed to a website; identifying 120 a data string having at least one confidential characteristic; categorizing the data string with a categorization level; examining 140 the website for at least one characteristic consistent with confidential data; creating 155 a website characteristic profile; comparing 170 the website characteristic profile with the data string's categorization level for compatibility; and determining 180 whether the data string can be communicated to the website.

Abstract: A recycling button (20) and recycling tool (150) for releasing propane from a propane cylinder (10). The recycling button (20) includes a barb (42) or other means that secures the recycling button (20) to the propane cylinder (10), thereby keeping the valve (16) of the propane cylinder (10) in an open position. The recycling button (20) is configured so that propane gas may exit the propane cylinder (10) to the atmosphere or a recycling tool (150). The recycling tool (150) aids in using a recycling button (20) and includes a diaphragm (160) attached to an indicator (162) so that any pressure exiting the propane cylinder (10) causes the diaphragm (160) to expand and the indicator (162) to show, thereby alerting users that there is still pressure inside the propane cylinder (10).

Abstract: Methods, apparatuses, and computer-readable media for protecting confidential data on a network. An embodiment of the inventive method comprises the steps of: monitoring 110 data directed to a website; identifying 120 a data string having at least one confidential characteristic; categorizing the data string with a categorization level; examining 140 the website for at least one characteristic consistent with confidential data; creating 155 a website characteristic profile; comparing 170 the website characteristic profile with the data string's categorization level for compatibility; and determining 180 whether the data string can be communicated to the website.