This paper designs a hydraulic vibration energy recovery system of speed bump that can recover vehicle vibration energy while decelerating the vehicle. Using hydraulic fluid as the energy recovery medium for deceleration, according to the speed range of vehicles passing through the speed bump, a design scheme for the hydraulic vibration energy recovery device for speed bump with a combination of split generation and continuous generation is proposed. Based on the coupling characteristics of the vehicle-speed bump-hydraulic transducer at different speeds of the vehicle, a joint simulation model was established to study the speed bump power generation module. Based on the simulation results, the hydraulic system operating parameters and component types were determined. Finally, a simulation test was conducted on an improved test-bed to test the power generation capability of the system.

Fermentation broth is plentiful with lactic acid, an important chemical applied in many fields, such as food processing, the chemical industry, and cosmetics. However, the purification of the lactic acid from the broth is still troublesome, when considering the economy. This study first investigated the purification performance of microfiltration (MF) membrane technology for a fermentation broth from kitchen waste. The effect of operation pressure, broth pH, and membrane flushing mode on the membrane filtration performance were investigated. In addition, the change in filtration performance over the increase in cycle time was also investigated. The results showed that under the optimum pressure of 100 KPa, pH of 6.0, and a backflushing mode with deionized water for 3 min, the best performance was achieved, with chroma removal, turbidity removal, protein removal and total sugar removal efficiencies of 60, 92.8, 57.64 and 32.93%, respectively. The results indicated that the MF process could be a desirable broth purification process to some extent, and it is promising in actual application. The MF process combined with other post-purification processes will form the ideal process system, which should be explored in future research.

Lactic acid (LA) is an important chemical material facing rapid demand in recent years. The oriented fermentation of kitchen waste is a promising route for economic LA production. However, the refinement of LA from fermentation broth is a spiny issue. In this study, the performance of ultrafiltration (UF) process for the refinement of LA from the pre-microfiltered broth of kitchen waste fermentation was first investigated. The results showed that with 50 KDa polyethersulfone membrane, under the optimum pressure of 120 KPa, the pH of 6.0, and the backflushing mode with the deionized water for 3 min, the best performance was achieved with the chroma removal efficiency, turbidity removal efficiency, protein removal efficiency and total sugar removal efficiency of 54.3%, 89.8%, 71.7% and 58.5%, respectively, and LA recovery efficiency was 93.6%. The results indicated that the UF process could further effectively refine the pre-microfiltered broth of kitchen waste fermentation, and the combination of microfiltration and UF process is ideal for achieving desirable LA refinement performance. This study verified the feasibility of UF process in LA refinement from pre-microfiltered broth of kitchen waste fermentation, and based on the results, the further exploration of proper post-process to treat UF filtrate for obtaining LA product with higher quality should be explored in the future.

In this article we present an overview on two-person zero-sum games, which play a central role in the development of the theory of games. Two-person zero-sum games is a special class of game theory in which one player wins what the other player loses with only two players. It is difficult to solve 2-person matrix game with the order m×n(m≥3,n≥3). The aim of the article is to determine the method on how to solve a 2-person matrix game by linear programming function linprog() in matlab. With linear programming techniques in the Matlab software, we present effective method for solving large zero-sum games problems.

In this paper, an area-efficient pipelined very large scale integration (VLSI) architecture is proposed for Reed-Solomon (RS) decoding. The proposed architecture is exploited based on the features of vector operations of the decoding algorithm. By pipelining and folding, the proposed architecture can improve the reuse rate of the main computation unit, reduce the hardware complexity and delete the redundant circuits. Synthesized by the Cadence Ambit TM tool using the TSMC 0.25 µm standard cell library, the implemented RS decoder consists of about 27,000 gates, which is about 39% smaller than the same kind of conventional ones. It has been integrated in a channel demodulation chip for high-definition television (HDTV) and has been tested successfully in practice. I. INTRODUCTIONeed-Solomon (RS) codes are an important class of error-correcting codes. Owing to the excellent capability for correcting both random and burst errors over communication channels, they have been extensively used in applications such as satellites, mobile communications, magnetic recording and high-definition television (HDTV).For reliable communication there is a need to use RS codes with large error-correcting capability. Hence, one is especially interested in minimizing the complexity and saving the size of RS decoders for communication applications. Toward this end, we will develop an areaefficient very large scale integration (VLSI) architecture for RS decoder.The paper is organized as follows: The known procedures of decoding RS codes and the related works are described in Section 2. Then, we propose an area-efficient architecture for the RS decoder in section 3. In section 4, the implementation of a RS (204,188) decoder designed with the proposed architecture and the area comparison with other conventional ones are illustrated. Finally, the conclusions are given in section 5.