Abstract: A system includes a concentration sensor, a flow sensor, and a controller. The concentration sensor is configured to measure a concentration of a contaminant in a cabin of an aircraft. The flow sensor is configured to measure a flow rate of air into the cabin. The controller is configured to determine whether a concentration measurement of the contaminant in the cabin exceeds a first concentration threshold. The controller is configured to, in response to determining that the concentration measurement does not exceed the first concentration threshold, control the flow rate of air into the cabin based on a flow rate setpoint. The controller is configured to, in response to determining that the concentration measurement exceeds the first concentration threshold, control the flow rate of air into the cabin based on a flow rate setpoint and a correction factor that is based on a flow sensor tolerance.

Abstract: A system includes a concentration sensor, a flow sensor, and a controller. The concentration sensor is configured to measure a concentration of a contaminant in a cabin of an aircraft. The flow sensor is configured to measure a flow rate of air into the cabin. The controller is configured to determine whether a concentration measurement of the contaminant in the cabin exceeds a first concentration threshold. The controller is configured to, in response to determining that the concentration measurement does not exceed the first concentration threshold, control the flow rate of air into the cabin based on a flow rate setpoint. The controller is configured to, in response to determining that the concentration measurement exceeds the first concentration threshold, control the flow rate of air into the cabin based on a flow rate setpoint and a correction factor that is based on a flow sensor tolerance.

Abstract: Some embodiments of the present invention provide systems and methods for detecting anomalies in network traffic. Some embodiments detect anomalies based on time-series activity in network traffic. Upon detection of an anomaly, significant changes can be analyzed to identify abnormal changes in network traffic across different network entities. The identified changes can then be used to determine the cause and the impact of the detected anomaly on the network traffic.

Abstract: According to an aspect of the invention, a system and method is configured to generate a user interface to display information about time series outliers in network traffic.

Abstract: According to an aspect of the invention, a system and method is onfigured to generate impact scores based on observed network traffic.

Abstract: A method of, and apparatus, for, controlling the temperature of pressurized air such as bleed air from a gas turbine engine, wherein the air is passed through a heat exchanger to exchange heat with coolant air which is caused to flow through the heat exchanger by operation of an ejector device powered by some of the pressurized air, the supply of the pressurized air to the ejector device is controlled to control the flow of coolant air and hence control the temperature of the pressurized air downstream of the heat exchanger.

Abstract: A method of, and apparatus, for, controlling the temperature of pressurized air such as bleed air from a gas turbine engine, wherein the air is passed through a heat exchanger to exchange heat with coolant air which is caused to flow through the heat exchanger by operation of an ejector device powered by some of the pressurized air, the supply of the pressurized air to the ejector device is controlled to control the flow of coolant air and hence control the temperature of the pressurized air downstream of the heat exchanger.

Abstract: A unidirectional ring operates in accordance with a call setup procedure in which a single node on the ring, referred to herein as the “hub node,” simultaneously (i) processes call setup information from and provides call setup information to an ATM network, and (ii) controls the call setup operations of the nodes on the ring. When a source node that is part of the ring initiates a call, the node directs a call setup message to the hub node. The hub node determines if there is sufficient bandwidth available on the ring for the call. If so, the hub node passes the call setup message to the ATM network, and simultaneously multicasts call setup information to the nodes on the ring. While the call setup message is progressing over the ATM network in a conventional manner, the nodes on the ring simultaneously set up the associated virtual path and/or virtual circuit and send back connection information to the hub node.