Abstract: Systems and methods for liquefying a gaseous hydrogen that include a first refrigeration stage and a second refrigeration stage. The first refrigeration stage includes a first heat exchanger configured to flow a first refrigerant to pre-cool the gaseous hydrogen. The second refrigeration stage includes a second heat exchanger configured to flow a second refrigerant to liquefy and sub-cool the hydrogen. The second refrigerant is split into two streams that flow through two compressor-expanders and multiple passes through the second heat exchanger before being recombined to repeat the second refrigeration stage circuit.

Abstract: A LNG liquefaction plant includes a propane recovery unit including an inlet for a feed gas, a first outlet for a LPG, and a second outlet for an ethane-rich feed gas, an ethane recovery unit including an inlet coupled to the second outlet for the ethane-rich feed gas, a first outlet for an ethane liquid, and a second outlet for a methane-rich feed gas, and a LNG liquefaction unit including an inlet coupled to the second outlet for the methane-rich feed gas, a refrigerant to cool the methane-rich feed gas, and an outlet for a LNG. The LNG plant may also include a stripper, an absorber, and a separator configured to separate the feed gas into a stripper liquid and an absorber vapor. The stripper liquid can be converted to an overhead stream used as a reflux stream to the absorber.

Abstract: Disclosed are methods and systems for improved wireless terminal roaming. In some embodiments, a management module determines access point density metrics for a plurality of centrally managed access points of a communications site. The density metric considers an average RSSI of access point signals received by other access points of the site, and each access point's contribution to the average. A determination of whether a particular wireless terminal roams is based on the density metrics of the source and target access point, as well as statistics relating to a current capacity of each of the access points. The disclosed embodiments may determine that a wireless terminal should transition/roam away from an access point even when that access point's RSSI value at the wireless terminal is above a threshold that would cause traditional methods to inhibit roaming.

Abstract: Embodiments relate to a system, program product, and method for reserving one or more meeting rooms, and, more specifically, for reserving one or more meeting rooms based on a determination of meeting confidentiality levels and determined Internet of things (IoT) privacy levels associated with the one or more meeting rooms.

Abstract: Embodiments relate generally to systems and methods for pre-cooling a natural gas stream to a liquefaction plant. A system may include a compressor configured to receive a first natural gas stream at a first pressure and produce a second natural gas stream at a second pressure; an exchanger, wherein the exchanger is configured to receive the second natural gas stream as the second pressure and cool the second natural gas stream to produce a cooled natural gas stream; and an expander, wherein the expander is configured to receive the cooled natural gas stream and expand the cooled natural gas stream to produce a chilled natural gas stream from the second pressure to a third pressure. An LNG liquefaction plant system, wherein the refrigeration content of the external or internal refrigerant is used to liquefy and sub-cool a natural gas stream to produce liquefied natural gas (LNG) in a cold box or cryogenic exchanger.

Abstract: An approach is provided for generating an interface. Using natural language processing and natural language understanding, ingredients are derived from audio data from a customer's spoken order of ingredients of a food item. Locations of the ingredients in a preparation area are identified. A location of an employee is determined. Distances of the ingredient locations to the employee location are calculated. A sequence of selecting the ingredients is determined so that the employee selecting the ingredients in the sequence optimizes a speed at which the food item is prepared. An overlay to an interface for viewing in an augmented reality (AR) headset worn by the employee is generated and displayed. The overlay includes indicators overlaying an image of the preparation area. The indicators mark the ingredients, mark the sequence of selecting the ingredients, and distinguish the ingredients from other ingredients in the preparation area.

Abstract: A computer-implemented method, a computer program product, and a computer system for dynamically adjusting zoom settings in a multiple user environment. A server determines whether the multiple user environment is an environment of co-located users or an environment of distributed users. In response to determining the environment of the co-located users, the server determines an aggregated preference, determines an optimal zoom setting for a singular display based on the aggregated preference, and adjusts the singular display based on the optimal zoom setting for the singular display. In response to determining the environment of the distributed users, the server determines optimal zoom settings for respective ones of the multiple displays, based on preferences of respective ones of the distributed users, and the server adjusts the respective ones of the multiple displays, based on the optimal zoom settings for the respective ones of the multiple displays.

Abstract: Identifying and reducing package delivery risks can include receiving, at a computer, package delivery data for a package to be delivered. Package delivery factors can be determined which include package fragility. Product information and product reviews can be analyzed based on the factors, and the analyzing can include using natural language processing to evaluate the product information and product reviews to identify language related to the factors. The factors can be weighted based on the analysis of the product information and the product reviews based on a probability of risk of damage to the package. A package risk score is calculated based on the analysis and the weighting. A best delivery practice for the package is generated based on the package risk score, and the package risk score and best delivery practice is communicated to a device of a delivery person.

Abstract: A recoil assembly for a rifle includes a barrel assembly, a bolt, bolt actuator, and a buffer assembly. The barrel assembly includes a barrel secured to a barrel extension. The barrel assembly is configured to be movably received through the fore end of a receiver and to move axially relative to the upper receiver when the rifle is fired. The barrel extension is coupled to a hydraulic buffer assembly located below the barrel extension and counteracts recoil forces acting on the barrel extension when the rifle is fired. An op-rod spring is coupled to an op rod extending from a gas piston assembly on the barrel. The op-rod spring counteracts recoil forces acting the bolt actuator when the rifle is fired.

Abstract: An ejector device (1), e.g., for pumping a gas using a liquid motive fluid, has an injector portion (100), and a diffuser portion (50), the injector portion (100) being arranged for injecting a flow of motive fluid from a motive fluid inlet (10) into an inlet section (52) of the diffuser portion (50) thereby to draw a suction fluid from a suction fluid inlet (20) into the inlet section (52) of the diffuser portion (50). The injector portion (100) includes a flow-modifying arrangement with at least one rotational deflector element (104), e.g., three vanes (104V1, 104V2, 104V3) each at a desired twist angle, constructed and arranged to deflect motive fluid into a helical path as it moves over or through the rotational deflector element (104), and at least one baffle element (103), e.g., a baffle plate (103), downstream of the rotational deflector element (104).

Abstract: Aspects for resolving failed user-interface functionality are described. One or more processors are configured for detecting a first user input having a first input magnitude at user-selectable elements displayed on a local device user-interface, determining that the local device user-interface is not responsive to the first user input; detecting a second user input having a second input magnitude that is greater than the first input magnitude at the user-selectable elements, wherein the first user input and the second user input are by the user; determining that the local device user-interface is not responsive to the second user input; transmitting first data corresponding to a user-interface offload prompt to a mobile device associated with the user, wherein the mobile device is within a predetermined proximity of the local device user-interface; and receiving second data corresponding to a plurality of mobile device user inputs from the mobile device.

Abstract: Aspects for resolving failed user-interface functionality are described. One or more processors are configured for detecting a first user input having a first input magnitude at user-selectable elements displayed on a local device user-interface, determining that the local device user-interface is not responsive to the first user input; detecting a second user input having a second input magnitude that is greater than the first input magnitude at the user-selectable elements, wherein the first user input and the second user input are by the user; determining that the local device user-interface is not responsive to the second user input; transmitting first data corresponding to a user-interface offload prompt to a mobile device associated with the user, wherein the mobile device is within a predetermined proximity of the local device user-interface; and receiving second data corresponding to a plurality of mobile device user inputs from the mobile device.

Abstract: Embodiments relate generally to systems and methods for gas detection. A method may comprise operating a gas detector with a first alarm setting comprising a first predefined threshold; receiving sensed data of oxygen content in the ambient air; when the sensed data is below the first predefined threshold, activating an alarm; generating an acknowledgement request asking if the gas detector has entered an inert work zone; receiving a response from the user acknowledging that the gas detector has entered an inert work zone; deactivating the alarm; changing the alarm settings of the gas detector to a second alarm setting comprising a second predefined threshold; continuing to receive sensed data of oxygen content in the ambient air; when the sensed data is above the second predefined threshold, activating an alarm; and generating an acknowledgement request for the user asking if the gas detector has entered a normal operation work zone.

Abstract: A recoil assembly for a rifle includes a barrel assembly, a bolt, bolt actuator, and a buffer assembly. The barrel assembly includes a barrel secured to a barrel extension. The barrel assembly is configured to be movably received through the fore end of the upper receiver and to move axially relative to the upper receiver when the rifle is fired. The barrel extension is coupled to a hydraulic buffer assembly located below the barrel extension and counteracts recoil forces acting on the barrel extension when the rifle is fired. An op-rod spring is coupled to an op rod extending from a gas piston assembly on the barrel. The op-rod spring counteracts recoil forces acting the bolt actuator when the rifle is fired.

Abstract: An approach is provided for generating an interface. Using natural language processing and natural language understanding, ingredients are derived from audio data from a customer's spoken order of ingredients of a food item. Locations of the ingredients in a preparation area are identified. A location of an employee is determined. Distances of the ingredient locations to the employee location are calculated. A sequence of selecting the ingredients is determined so that the employee selecting the ingredients in the sequence optimizes a speed at which the food item is prepared. An overlay to an interface for viewing in an augmented reality (AR) headset worn by the employee is generated and displayed. The overlay includes indicators overlaying an image of the preparation area. The indicators mark the ingredients, mark the sequence of selecting the ingredients, and distinguish the ingredients from other ingredients in the preparation area.

Abstract: A method for testing a system under test (SUT) in an active environment includes generating, by a testing system, several tests for testing the SUT. The tests are generated based on a coverage model of the SUT, which includes multiple attributes. The method further includes creating, by the testing system, a minimal set of tests from the tests by selecting tests that do not exceed a predetermined performance threshold. The method further includes executing, by the testing system, the minimal set of tests on the SUT for analyzing a soft failure of the SUT in the active environment. The soft failure occurs in the active environment during execution of the SUT based at least in part on a performance parameter of the active environment.

Abstract: Described are techniques for preserving data security for sensitive information. The techniques including identifying sensitive information in first audio data from a first client device. The techniques further comprise generating second audio data including hashed sensitive information, where the hashed sensitive information comprises an audio clip that replaces the sensitive information and that is based on the sensitive information. The techniques further comprise transmitting the second data including the hashed sensitive information to a second client device. The techniques further comprise receiving third audio data including the hashed sensitive information from the second client device. The techniques further comprise generating fourth audio data by replacing the hashed sensitive information with the sensitive information and transmitting the fourth audio data including the sensitive information to the first client device.

Abstract: Embodiments relate generally to systems and methods for gas detection. A method may comprise operating a gas detector (102) with a first alarm setting comprising a first predefined threshold; receiving sensed data of oxygen content in the ambient air; when the sensed data is below the first predefined threshold, activating an alarm (110); generating an acknowledgement request asking if the gas detector has entered an inert work zone (122); receiving a response from the user acknowledging that the gas detector has entered an inert work zone; deactivating the alarm; changing the alarm settings of the gas detector to a second alarm setting comprising a second predefined threshold; continuing to receive sensed data of oxygen content in the ambient air; when the sensed data is above the second predefined threshold, activating an alarm; and generating an acknowledgement request for the user asking if the gas detector has entered a normal operation work zone (120).

Abstract: A waterproof rolling paper dispensing apparatus which comprises an inner cylinder which is closed at one end and open at an opposite end thereof. The inner cylinder has an elongate slit and supports a cutting edge which facilitates cutting of a length of rolling paper from a continuous roll of rolling paper accommodated within the inner cylinder. An exterior housing is dosed at one end and open at an opposite end thereof. The exterior housing defines an internal storage compartment which stores the inner cylinder. An end cover releasably engages with the open end of the exterior housing and forms a waterproof seal therewith. The end cover also releasably engages with the open end of the inner cylinder so that when the end cover is removed from engagement with the exterior housing, the inner cylinder remains coupled to the end cover and is removed with the end cover.

Abstract: Aspects of the present disclosure relate to wireless communication management. A set of sensor data can be collected by a first device paired to a second device using a wireless communication (WC) protocol. The set of sensor data can be analyzed to determine whether a rule for adjusting a WC activation threshold is satisfied, the WC activation threshold defining a distance at which the first device and second device are permitted to transfer data to each other. The WC activation threshold can be adjusted in response to determining that the rule for adjusting the WC activation threshold is satisfied.