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The aspheric parabolic mirror is used extensively; however, its surface measuring requires high speed, high precision, and online detection. Non-contact laser displacement sensor (LDS) is the best choice especially for aspheric parabolic mirror with diameter larger than 150 mm. A quantitative error compensation model is deduced according to the principle of laser triangulation in this paper. The model...
DC/OS is a widely used distributed operating system that abstracts the resources of light-weighted virtualized datacenters, which is based on Mesos distributed systems kernel and user space services such as Marathon. It automates resource management and process scheduling, thus significantly impacts the performance of datacenters. In this paper, we propose Themis, a flexible, automatic and distributed...
Due to the quality of paper and long-time preservation, the ink on one side of the historical documents often seeps through and appears on the other side. In this paper, a new blind ink bleed-through removal method is proposed to deal with the scanned historical document images. The scanned historical document image generally consists of three components: foreground, bleed-through and background....
Cloud computing is a new paradigm for the delivery of IT services. It has enabled many promising opportunities for features that cannot be easily implemented in traditional IT environments, such as elastic scalability, self-service deployment, resiliency and recovery, and so forth. Benchmarking the cloud requires a well-defined set of cloud performance metrics that should be able to sensitively distinguish...
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