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Comparison of the connection modes is one of the most important questions in the planning and maintaining of the urban distribution networks. Considering the characteristic of the actual distribution networks, this paper creates a load distribution model in which considers load density as the main indicator, considers the constraints such as current limit and voltage drop limit of the branches, and...
As a kind of electronic products, the failure rate of LED products follows the traditional bathtub curve. Corresponding to the different regions in the failure rate curve of the LED products, this paper proposes two different lifetime evaluation methods. In the first method, the lumen maintenance lifetime of the LED device is estimated by only considering the failure of lumen maintenance, corresponding...
Power user electric energy data acquire system is a system that collects, processes and monitors the electric energy data and realizes the functions such as the automatic collection of electricity information, anomaly monitoring, electricity consumption analysis and information exchange et al. As an important part of the strong smart grid, power user electric energy data acquire system faces customers...
An expert consensus survey based on electronic communication of Delphi method is conducted to develop the TCM clinical pathway for acute ischemie stroke. An initial protocol of the clinical pathway is developed based on literature survey and by an internal panel of experts, which forms the basis of the questionnaire of the Delphi survey. The content of the initial questionnaire is classified into...
Decap allocation are the primary methods for addressing the dynamic voltage, noise problem of on-chip power networks. When space in the immediate proximity of a hot, spot is constrained, simply adding decoupling capacitance without improving the local wiring is ineffective. Based on this key observation, we propose an efficient co-optimization of decap allocation and local wiring enhancement. The...
We propose a novel and efficient charge-based decoupling capacitance budgeting algorithm. Our method uses the macro-modeling technique and effective radius of decoupling capacitance to reduce the size of the problem. We formulate the nonlinear optimization into a linear program (LP) by integrating the nodal equations across a time period of interest and through certain approximations. To reduce the...
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