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The industrial N,N‐dimethylformamide (DMF) recovery plant is usually based on a two‐column sequence (TCS) and the capacity of the wastewater treatment process is larger than 2000 kg h−1. Here, a dividing‐wall column (DWC)‐based DMF recovery plant is proposed. The DWC avoids the remixing effect and reduces the utility duties by about 18.1 % and the CO2 emissions by 15.2 %, compared to the TCS. The...
Monte Carlo Tree Search (MCTS) is frequently used for online planning and decision making in large space problems, where the move maximizing a reward score is chosen as the optimal solution. As many problems have more than one objective, this paper presents a multi-objective version of MCTS. The algorithm employs a non-linear scalarization function, the Chebyshev metric based function, as a basis...
This paper presents a low-voltage and low phase noise LC-VCO IC with simplified noise filtering in 180-nm CMOS technology. The novel VCO IC includes a cross-coupled pMOSFET pair, an LC resonator, buffer amplifiers and a tail inductor for noise filtering. The novel and conventional LC-VCO ICs are designed, fabricated and fully tested on wafer. At a power supply voltage of only 0.5 V, the novel VCO...
Modern heterogeneous multiprocessor embedded platforms is important for the high volume markets that have strict performance. However, it presents many challenges that need to be addressed in order to be efficiently utilized for multitask applications. Since mapping and scheduling problems for multi processors belong to the classic of NP-Complete problems, common methods used to solve this kind of...
This paper analyses the exsiting planning theory of rural roads in china. Through analysis into the background of rural roads development in the country, the paper puts forward a new planning method for rural roads based on the stakeholder theory; it also discusses the focus of rural road planning and the relevant institutional arrangement. Finally, exemplification is applied to prove the rationality...
Discretization of continuous-valued attributes is always one of the key problems in rough sets theory, a multiscale rough set model (MRSM) is developed that describes the discretization at multiple scales and analyzes the relation of classifications and certainty between scales. In view of the model's efficiency and effectiveness. an optimal scale can be acquired with self-organization, self-study...
Distributed Web crawling (DWC) over DHTs is proposed to solve the bottlenecks in the traditional Web crawling. The core of this kind of system is its fully distributed task scheduling mechanism in which the crawlers are treated as peers and the crawlees are treated as resources maintained by the peers. A system model based on the content addressable network (CAN) can further optimize the scheduling...
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