Abstract: A system and method include providing backup and restore capability to a cluster node. The cluster node includes a controller virtual machine (CVM) that is communicably coupled to a plurality of cloud platforms and provides the capability of carrying out backup and restore at the cloud platforms without having to run a CVM at the cloud platform. The CVM can backup objects to the cloud platform and store metadata information related to the object in storage. The CVM also takes snapshots of the object and stores the snapshots. The CVM also determines a changed data chunks that include the changes made to the object from the last snapshot. To restore the object, the CVM restores the object based, in part, on the snapshots, the changed data chunks, and the metadata stored at the node.

Abstract: A system and method include receiving a request to call a requested application programming interface (API) at a target cloud computing platform. The system and method further include determining that the requested API is unsupported by the target cloud platform. The system and method further include generating a set of workflows associated with the requested API. The system and method also include generating a set of tasks common to the plurality of cloud platforms including the target cloud platform based on the set of workflows. The system and method also include generating a set of target APIs associated with the target cloud platform based on the set of tasks and an identity of the target cloud platform. The system and method also include communicating the set of target APIs t to the target cloud platform.

Abstract: A method and device for measuring a substance's concentration in a fluid. The method includes first passing a sample to be measured through a chemical sensor at least twice and recording the response value each time; forming a simultaneous equation set using the equation relation between the response value obtained during each measurement and the concentration of the substance, and the mass equation relation satisfied by the concentration change caused by a physical, chemical reaction during each measurement and by the change of the mass, electric quantity, and heat; solving for the concentration of the substance measured and the sensor calibration parameter. The method, used as an absolute measurement method, can be applied to calibrate the sample concentration of a fluid, overcomes the effects on the measurements caused by temperature, humidity, pressure, and some interfering gas, requires no sensor calibration, and substantially enhances the measurements' stability and reliability.

Abstract: A method and device for measuring a substance's concentration in a fluid. The method includes first passing a sample to be measured through a chemical sensor at least twice and recording the response value each time; forming a simultaneous equation set using the equation relation between the response value obtained during each measurement and the concentration of the substance, and the mass equation relation satisfied by the concentration change caused by a physical, chemical reaction during each measurement and by the change of the mass, electric quantity, and heat; solving for the concentration of the substance measured and the sensor calibration parameter. The method, used as an absolute measurement method, can be applied to calibrate the sample concentration of a fluid, overcomes the effects on the measurements caused by temperature, humidity, pressure, and some interfering gas, requires no sensor calibration, and substantially enhances the measurements' stability and reliability.

Abstract: A method and device for measuring a substance's concentration in a fluid. The method includes first passing a sample to be measured through a chemical sensor at least twice and recording the response value each time; forming a simultaneous equation set using the equation relation between the response value obtained during each measurement and the concentration of the substance, and the mass equation relation satisfied by the concentration change caused by a physical, chemical reaction during each measurement and by the change of the mass, electric quantity, and heat; solving for the concentration of the substance measured and the sensor calibration parameter. The method, used as an absolute measurement method, can be applied to calibrate the sample concentration of a fluid, overcomes the effects on the measurements caused by temperature, humidity, pressure, and some interfering gas, requires no sensor calibration, and substantially enhances the measurements' stability and reliability.