Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable storage medium for tracing an attack source in a service function chain overlay network. In example embodiments, a request for tracing an attack source of an attacking data is sent at the attack tracer to a first service function chain domain of a plurality of service function chain domains through which the attacking data flow passes subsequently. The request includes flow characteristics of the attacking data flow. Then, the attack tracer receives a first set of results of flow matching based on the flow characteristics from the first service function chain domain. The attack tracer identifies the attack source in the plurality of service function chain domains at least in part based on the first set of results. In this way, the attack source may be traced efficiently in the service function chain overlay network.

Abstract: A data acquisition and reconstruction method and a data acquisition and reconstruction system for human body three-dimensional modeling based on a single mobile phone. In the aspect of data acquisition, the present application only uses a single smart phone, and uses augmented reality technology to guide users to collect high-quality video data input for a reconstruction algorithm, so as to ensure that the subsequent human body reconstruction algorithm can stably obtain a high-quality three-dimensional human body model. In the aspect of a reconstruction algorithm, the present application designs a deformable implicit neural radiance field. The use of an implicit spatial deformation field estimation model solves the problem that the subject has small motion in the process of collecting data with a single mobile phone; the implicit signed distance field is used to represent human geometry, which has rich expressive ability and improves the accuracy of three-dimensional human model reconstruction.

Abstract: The disclosure provides a battery pack, a power tool system and a charging system. The battery pack includes a battery pack housing in which a battery cell assembly and a circuit board are mounted. The circuit board is electrically connected with the battery cell assembly. A plurality of Type-C connectors are arranged on the circuit board and electrically connected to the circuit board to realize an electrical connection between the battery cell assembly and the Type-C connectors, and are configured to connect external devices.

Abstract: A main pump shaft seal water injection system of a nuclear power plant includes a jet pump, a high pressure cooler, a hydrocyclone, valves and a main connection pipeline outside of a main pump, and an auxiliary pump and an internal flow path inside the main pump. Inner and outer flow paths of the main pump are connected with a shaft seal water injection hole and a high temperature water drainage hole. The main connection pipeline is connected between an upper filling water pipeline and a shaft seal water injection hole. A bypass pipeline connected with the jet pump, the high pressure cooler and the hydrocyclone, the main connection pipeline is provided with a normally open main pipeline isolating valve. The bypass pipeline allows low temperature upper filling water in the RCV system to enter the shaft seal water injection hole of the main flange directly.

Abstract: A main pump shaft seal water injection system of a nuclear power plant includes a jet pump, a high pressure cooler, a hydrocyclone, valves and a main connection pipeline outside of a main pump, and an auxiliary pump and an internal flow path inside the main pump. Inner and outer flow paths of the main pump are connected with a shaft seal water injection hole and a high temperature water drainage hole. The main connection pipeline is connected between an upper filling water pipeline and a shaft seal water injection hole. A bypass pipeline connected with the jet pump, the high pressure cooler and the hydrocyclone, the main connection pipeline is provided with a normally open main pipeline isolating valve. The bypass pipeline allows low temperature upper filling water in the RCV system to enter the shaft seal water injection hole of the main flange directly.

Abstract: The present invention provides a method for producing B4C/Al neutron-absorbing material sheet by continuous cast rolling including the steps of: 1) providing B4C particles and aluminum matrix melt, adding the B4C particles into the aluminum matrix melt while stirring the composite of the B4C particles and the aluminum matrix melt; 2) applying an electromagnetic field to the B4C particle-containing aluminum matrix melt passing through a headbox; 3) applying an ultrasonic vibration to the B4C particle-containing aluminum matrix melt passing through a casting nozzle; and 4) conducing twin roll continuous cast rolling on the B4C particle-containing aluminum matrix melt from the casting nozzle to obtain B4C/Al neutron-absorbing material sheet.

Abstract: An elastic garment provides an easy, quick, user-friendly way of positioning and fixing ECG electrodes. The elastic textile can offset the impact of body shape on the position of ECG electrodes. The elasticity ensures good electrode abutment and prevent electrode dislocation. The garment has labels indicating the significant bony landmarks, which help user wear the garment correctly thus ensuring the position of the electrodes. Optional features include: labels to indicate the position of electrodes; embedded wires, electrodes and connectors to external ECG device. The garment makes it possible for non-professionals to perform ECG examination including the standard 12-lead ECG. It also minimizes electrode dislocation and uncomfortable feelings of wearing ECG device, especially for those under long-term ECG monitoring. It can also help avoid the inconvenient procedure of undressing a patient during ECG examination.