Abstract: Systems and methods for normalizing the control parameters associated with trading algorithms, providing analytic data to traders in discrete time intervals to assist in the analysis of trading performance, and providing crossing opportunities to orders that have been committed to a trading algorithm but have not yet been executed, are provided. A dashboard to allow a trading professional more effective use of multiple algorithms can be created. Parameters associated with multiple algorithms can be normalized and tuned rapidly from a single user interface. Trading performance can be reviewed in discrete time intervals and execution venues. Traders can review a performance score for a trading algorithm and select an algorithm based in part on their commission budget. Block trading opportunities can be available with a crossing engine or external ATS.

Abstract: An apparatus and method for delivering oxygen to a nasopharynx and withdrawing exhale gas from the nasopharynx to a carbon dioxide monitor. In one embodiment, the apparatus can comprise one or more tubes and an airway fitting forming an airway. The airway fitting can be configured to engage at least one of the tubes and maintain the one or more tubes within the airway, and to provide an outlet to the atmosphere for the airway. In another embodiment, the tube might be in fluid communication with a junction that can direct oxygen from an oxygen supply through the tube and exhale gas from the tube to the carbon dioxide monitor. Further, the tube might comprise an outer tube and an inner tube.