In order to solve the problem of inefficiency and high cost in applying single-secret sharing scheme to man-age multiple secrets,this paper proposes a simple and practical multi-secret sharing scheme. The basic idea of this present scheme is to construct a special polynomial. Based on analyzing the scheme,this paper derives a set of formulas,thus to compute multiple secrets and examine its correctness and feasibility by a concrete example.
Engineering has the comprehensive, creative and practical essences, which combine technology with non-technology, science with non-science to be an organic whole. Consequently, it represents the integration of multi-subjects and multi-knowledge. Engineering courses are not just involved in a wide range of academic programs, but also have obvious cross-coupled features and prompt development. As a result, society requires more of the students in this major, in other words, we must attach great importance to the improvement of overall quality that we need to educate challenged talents with broad knowledge, innovative ideology, pluralistic ability to adapt to an era of knowledge economy. From the reality of vocational and technical institutions, this essay mainly explores the courses construction and optimization on its significances, effects, principles and matters we should concern to advance the quality of personnel education.
X-ray diffraction (XRD) and X-ray photoelectron spectroscopy were used to study the structure and the element chemical states of plasma-based ion implantation (PBII) nitriding M50 steel. An ~70-nm-thick oxygen-rich layer was formed in the surface after PBII treatment, where C and V elements were absent, Cr and Mo elements were in the manner of oxide, and Fe element was in the manner of Fe 3 O 4 and iron nitride. XRD patterns revealed that the Fe 16 N 2 phase was formed in the subsurface of the nitrided layer. Four different chemical states of nitrogen with binding energies of 404.1, 399.2, 396.7, and 394.3 eV were found in sequence with sputtering time increasing, which were confirmed to belong to NO bonding, Fe 3 (N, O) [or Fe 4 (NO)], Fe 3 N (or Fe 4 N), and Fe 16 N 2 .
One of the main objectives of wireless sensor network design is to improve the energy efficiency. How to efficiently utilize sensor nodes to prolong the lifespan of a wireless network has long been a research topic. This paper presents a location based LEACH clustering algorithm, which is an extension to the LEACH routing algorithm. Armed with distributed and local network based routing decision-making mechanism, this algorithm fully utilizes the location information of network nodes in routing to reduce the routing cost. Simulation results indicate that this algorithm can balance nodes' energy consumption and prolong the network's life span. It also has good stability and extensibility.
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