Abstract: Systems and methods are provided for self-calibrating a health state of a hardware resource using a Siamese network based on a plurality of feature variables. The feature variables may include hardware failure data, performance degradation data, and power consumption data. The hardware failure data is based on machine operation records and warranty logs. The performance degradation data is based on hourly performance data and a number of client requests for performing functions. The power consumption data uses power telemetry and a processor (e.g., CPU) usage. The present disclosure uses a Siamese network with a plurality of trained neural networks in parallel to determine a correlation between incident data and reference data (e.g., representing a hardware resource in a healthy state). Use of the Siamese network enables self-calibrating a health status of servers in a cloud system without imposing stress tests or complex computations to classify the respective servers.

Abstract: The present invention relates to the technical field of mine fire prevention and extinguishing, in particular to a liquid nitrogen direct injection and low-temperature foaming intelligent filling system based on mine fire area characteristics and an application method, comprising a liquid nitrogen storage tank, a liquid nitrogen direct injection system and a low-temperature foaming system, wherein the liquid nitrogen storage tank communicates with a liquid nitrogen pressurizing device through a main pipeline; a temperature control unit is arranged on the main pipeline; and the liquid nitrogen pressurizing device is connected with the liquid nitrogen direct injection system and the low-temperature foaming system, respectively, liquid nitrogen is directly injected into a foam liquid, to prepare a low-temperature foam type fire preventing and extinguishing material by means of forced convection, membrane boiling, explosion boiling and nucleate boiling between the liquid nitrogen and water.

Abstract: A method for preparing a carbon nano tube/polyacrylic acid hydrogel, a product and an application thereof are provided. The method includes: oxidizing a carbon nanotube into a carboxylated carbon nanotube, thereafter performing in-situ polymerization with acrylic acid, sodium hydroxide, ammonium persulfate, triethanolamine and N, N-methylenebisacrylamide to obtain a carbon nanotube/polyacrylic acid hydrogel. The hydrogel has a uniform porous structure, facilitating a rapid transmission and supply of water. The carbon nanotubes in the hydrogel are of an array structure, achieving a full absorption of solar energy to realize a high-efficiency photothermal conversion. The gel is attached to a sponge base to obtain a solar-powered carbon nano tube/polyacrylic acid hydrogel steam generator for the photothermal conversion. The steam generator is used for solar seawater desalination, but can improve evaporation rate and evaporation efficiency.

Abstract: A CO2 gas-liquid phase transition-based multistage compression energy storage apparatus for converting thermal energy into mechanical energy, including: a gas storage; a liquid storage tank; an energy storage assembly, which includes compressors and energy storage heat exchangers; an energy release assembly (400), which includes energy release heat exchangers and expanders; a heat exchange assembly the energy generated by the energy storage assembly, and the energy release heat exchangers being capable of receiving the energy temporarily stored by the heat exchange assembly; and a driving assembly, which includes an energy input member and a first driving member, the energy input member absorbing external thermal energy to drive the first driving member to work, and the first driving member being used for driving the compressors to work.

Abstract: A method for stability analysis of a combustion chamber of a gas turbine engine based on image sequence analysis belongs to the field of fault prediction and health management of aeroengine. Firstly, flow field data inside a combustion chamber of a gas turbine engine is acquired. Secondly, flow field images of the combustion chamber are preprocessed to respectively obtain a discrimination model data set and a prediction model data set. Then, a 3DWaveNet model is constructed as a generation network of a prediction model. A discrimination network of the module is constructed. The generation network and the discrimination network are combined to form the prediction model. Finally, a discrimination model is constructed according to the discrimination model data set; the training set in the discrimination model data set is used for training, and the test set is used for assessment.

Abstract: A hybrid light measurement method for measuring a three-dimensional profile comprises: Step 1 using a MEMS laser projector to realize projection of a laser stripe and a fringe pattern: and Step 2 performing matching to obtain a parallax, and incorporating a binocular stereo vision to perform reconstruction. The present disclosure employs MEMS projection technology to realize a hybrid measurement system capable of performing laser stripe measurement and fringe pattern measurement, thereby realizing quick measurement of three-dimensional profiles of objects having different surface properties. The present disclosure enables laser stripe measurement and fringe pattern measurement to be performed by the same measurement system without needing any additional hardware equipment. The projection device used in the present disclosure enables projection of multiple laser stripes, thereby increasing measurement precision and speed.

Abstract: A hybrid light measurement method for measuring a three-dimensional profile comprises: Step 1 using a MEMS laser projector to realize projection of a laser stripe and a fringe pattern: and Step 2 performing matching to obtain a parallax, and incorporating a binocular stereo vision to perform reconstruction. The present disclosure employs MEMS projection technology to realize a hybrid measurement system capable of performing laser stripe measurement and fringe pattern measurement, thereby realizing quick measurement of three-dimensional profiles of objects having different surface properties. The present disclosure enables laser stripe measurement and fringe pattern measurement to be performed by the same measurement system without needing any additional hardware equipment. The projection device used in the present disclosure enables projection of multiple laser stripes, thereby increasing measurement precision and speed.

Abstract: Aspects of the subject matter described herein relate to workflows. In aspects, an activity of a workflow may request data and provide a logical handle. In response, distributed workflow components use the logical handle to determine whether the requested data is available locally or remotely. If the data is available remotely, the components may obtain the data for the requesting entity. In the process of obtaining the data, the data may be serialized and deserialized. After the data is available locally, it is provided to the requesting entity.

Abstract: A computer may function as a broker that brokers execution of portions of a workflow. The broker computer may have a processor and memory configured to receive the workflow via a network. The workflow may have a corresponding SLA document that has rules governing how the workflow is to be executed. The broker computer may identify discretely executable sub-workflows of the workflow. The broker computer may also obtain information describing computing characteristics of each of a plurality of service providers (e.g., computation clusters, cloud services, etc.) connected with the broker computer via the network. The broker computer may select a set of the service providers by determining whether their respective computing characteristics satisfy the SLA. The broker computer may pass the discretely executable sub-workflows to the selected set of service providers. The workflow is thus executed, in distributed federated fashion, transparently to the user submitting the workflow.

Abstract: Aspects of the subject matter described herein relate to workflows. In aspects, an activity of a workflow may request data and provide a logical handle. In response, distributed workflow components use the logical handle to determine whether the requested data is available locally or remotely. If the data is available remotely, the components may obtain the data for the requesting entity. In the process of obtaining the data, the data may be serialized and deserialized. After the data is available locally, it is provided to the requesting entity.