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Image match has been widely used in computer vision, pattern recognition and image processing. The matching efficiency is a focus topic in the field and some methods have been presented, such as simplification of similarity measure, application of optimization algorithms. Particle swarm optimization algorithm (PSO) has been utilized successfully for image match. However, it is easy to fall into the...
Package warping during SMT reflow is a seriousconcern as warpage induced interconnect failures suchas Head-in-Pillow (HiP) and Non-Wet-Open (NWO) must be controlled. In this study, the high temperature reflow dynamicwarpage characteristics of BGA packages are examinedusing a simple, controlled gap between the solder balland printed paste interconnect to simulate separation andlifting of the joint...
Topic evolution is an important research topic in natural language processing. Existing work has been focused on topic evolution of long text such as Web pages, news and blogs. In this paper, we aim to derive topic evolution summaries and its topology structures from short text like microblogs. We propose a microblog topic evolution algorithm based on retweeting relationships (MTERR). Firstly, we...
Nowadays, we put forward a kind of electronic forensics system based on user behavior correlation analysis in view of the present electronic evidence lack of supervision. The system builds knowledge base according to the business activity main body, behavior, and object constraints.It filters the original electronic evidence based on similarity of electronic evidence and realizes users' behavior association...
Switching voltage regulator (VR) modeling has numerous advantages over the conventional state average VR modeling methodology, in terms of accuracy, functionality, tuning capability, and extended applications on EMI. In previous work, switching VR modeling based on Pspice was discussed [1]. However, it is fairly accurate with simulation time limited by circuit complexity and often results in convergence...
Traditional OTA (Online Travel Agent) is challenged by the Internet and mobile business with the evolution of information. The precise forecasting of ticket sales in OTA companies is beneficial to budget control and service quality. The paper develops an integrated forecasting model by combining the internal factors immediately influencing the ticket sales and the external factors reflecting the ticket...
High performance computing (HPC) platform power delivery simulation is typically based on state average mode for simplicity. However, it is not able to capture the dynamic ripple noise and non-linear effect of output voltages, as well as the phase information. The correlation between state average model and lab measurement often lacks accuracy in low to middle frequency range. As a result, platform...
This article introduced institutional embeddedness into the study on network power and competitive advantage. Based on the theory source, the paper built the relational model and made an empirical study on the model by taking the manufacturing enterprises in Beijing, Tianjin and Hebei as the small samples, then chose SPSS and AMOS as statistic tools. The relationship of network power and competitive...
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