Abstract: A universal acoustic emission test sensor fixing device includes a radial positioning mechanism, supporting mechanisms, bases, acoustic emission test sensor mounting mechanisms, and parallelism adjusting members, in which the supporting mechanism includes a main supporting arm and an auxiliary supporting arm, with one end of the auxiliary supporting arm fixedly connected to or hinged with the main supporting arm and the other end being provided with a ball head, and a parallelism adjusting member mounting mechanism is provided at the joint of the main supporting arm and the auxiliary supporting arm, and the base is provided with a spherical hole.

Abstract: The present invention relates to a method for handling and replacing a service. The method for handling a composite service may include obtaining a concrete service corresponding to a service invocation segment description in a composite service logic, wherein the service invocation segment is an abstract service invocation segment or a service template invocation segment; triggering a service replacement, requesting to replace the service invocation segment with a concrete service invocation segment of the obtained concrete service; or, triggering a service invocation, requesting to generate a service invocation based on the concrete service. Accordingly, a concrete service can be dynamically selected when the composite service logic is being executed.

Abstract: A service tracking method includes that after receiving a service tracking identification and a service request message, recording interaction information of the service if a tracking judging unit judges that the service identified by the service tracking identification corresponds to the service requested by the service request message; and uploading service tracking information to an upload address contained in the service tracking identification, the service tracking information containing the interaction information. A network device, Operation and Maintenance (O&M) controller, and service requesting device provided in embodiments of the present invention may achieve or assist in achieving the service tracking method provided in embodiments of the present invention.

Abstract: A spring supported lower clamper for direct tensile test, comprising a lower connection member, a lower end cap for holding a sample, a lower chain for connecting the lower connection member with the lower end cap, and spring-type supporting provisions for supporting a broken-apart lower part of the sample formed during the tensile test and the lower end cap. During the tensile test, the sample, the lower end cap and the lower chain are supported by the spring-type supporting provisions. Thus the sample can be prevented from being broken abruptly when a tensile force in the sample reaches its maximum level, and the mechanical behavior after the maximum tensile force is reached can be measured.

Abstract: A method of canceling an echo in a signal of a communication network may include filtering an input signal and a corresponding reference signal of an echo path so as to produce vectors of N subband signals corresponding to the input signal and N subband reference echo signals corresponding to the reference signal. Vectors corresponding to a subset of the N subband signals may be adaptively adjusted to form modified vectors of the subset which approximate the corresponding N subband reference echo signals. Based on the modified vectors, subband errors related to a residual echo for each of the subband signals of the subset may be determined. The subband errors may be synthesized to generate a full-band signal with a synthesized residual echo.

Abstract: A method for realizing the universal personal number ring back tone service comprises: determining the ring back tone played according to the called information, and determining the media resources for playing the ring back tone according to the calling information, the media resources information and the said ring back tone information; the said media resource plays the said ring back tone. The present invention also discloses a device and a system for realizing the universal personal number ring back tone service. On the basis of the present invention, UPT users are supported to assign the different ring back tone for each destination number, respectively, and the ring back tone information of each media resource is dynamically updated in accordance with the using situation of the ring back tone, therefore realizing that the UPT ring back tone service utilizes the network resources effectively.

Abstract: The present invention discloses a spring supported lower clamper for direct tensile test, comprising a lower connection member, a lower end cap for holding a sample, a lower chain for connecting the lower connection member with the lower end cap, and spring-type supporting means for supporting a broken-apart lower part of the sample formed during the tensile test and the lower end cap. During the tensile test, the sample, the lower end cap and the lower chain are supported by the spring-type supporting means. Thus the sample can be prevented from being broken abruptly when a tensile force in the sample reaches its maximum level, and the mechanical behavior after the maximum tensile force is reached can be measured.

Abstract: The present invention discloses a method for a called party to provide indication information for a calling party. The method includes the steps of: presetting the indication information to be provided to the calling party at the called party; before the called party answers the call in the connection procedure between the calling party and the called party, the network side obtaining the preset indication information from the called party and sending the indication information to the calling party. Accordingly, the present invention discloses a system for a called party to provide the indication information to a calling party. The present invention makes it possible that the called party flexibly selects the indication information to be provided to the calling party and the problem that only the indication information in the indication information database can be provided is avoided.

Abstract: A method of canceling an echo in a signal of a communication network may include filtering an input signal and a corresponding reference signal of an echo path so as to produce vectors of N subband signals corresponding to the input signal and N subband reference echo signals corresponding to the reference signal. Vectors corresponding to a subset of the N subband signals may be adaptively adjusted to form modified vectors of the subset which approximate the corresponding N subband reference echo signals. Based on the modified vectors, subband errors related to a residual echo for each of the subband signals of the subset may be determined. The subband errors may be synthesized to generate a full-band signal with a synthesized residual echo.

Abstract: An echo canceller and a method of echo cancellation using an NLMS algorithm. The NLMS algorithm alternates adaptation between a slow mode, aggressive mode, and inhibition mode, according to the status of the echo canceller. This implementation requires no correlation information. This implementation is simple and not very time consuming. During initial conversation, the NLMS algorithm is in an aggressive mode to ensure fast convergence. After convergence, the NLMS algorithm switches to a slow mode for lower residual echo return. Whenever an abrupt increase of residual echo caused by either double talk or echo path change is detected, the current adaptive filter coefficients are retained and then updated in the aggressive mode. The decision as to which echo estimation (the response of the retained filter or the response of the aggressively adapted filter) is subtracted from the reference echo for echo cancellation within a short detection delay period is determined according to the Geigel algorithm.

Abstract: An image retrieval system and method that combines histogram-based features with Wavelet Frame decomposition features, as well as two-pass progressive retrieval process. The proposed invention is robust against illumination changes as well as geometric distortions. During the first round of retrieval, moment features of image histograms in the Karhunen-Loeve color space are derived and used to filter out most of the dissimilar images. During the second round of retrieval, multi-resolution WF decomposition is recursively applied to the remaining images. A set of coefficients of low-pass filtered subimages at the coarsest level, after being mean-subtracted and normalized, are utilized as features containing spatial-color information. Modulus and direction coefficients are calculated from the high-pass filtered X-Y directional subimages at each level, and central moments are derived from the direction histogram of the most significant direction coefficients to obtain TRSI direction/edge/shape features.