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| 1 | Paving the Way to Smart Micro Energy Grid:Concepts,Design Principles,and Engineering Practices显示文摘The interconnection between initially independent energy infrastructures offers additional system flexibility and efficiency.The integration at distribution level simplifies the implementation of the integrated energy system functionalities.This paper proposes concepts and design principles of a smart micro energy grid(MEG)for accommodating micro-grids,distributed poly-generation systems,energy storage facilities,and associated energy distribution infrastructures.The energy management system is responsible for the smart operation of the MEG while supporting multiple criteria,such as safety,economy,and environmental protection.To realize the vision of the smart MEG,an engineering game theory based energy management system with self-approaching-optimum capability is investigated.Based on the proposed concepts,design principles,and energy management system,this paper presents a prototype of China’s first conceptual solar-based smart MEG,established in Qinghai University. | Shengwei Mei Rui Li Xiaodai Xue Ying Chen Qiang Lu Xiaotao Chen Carsten D.Ahrens Ruomei Li Laijun Chen | 2017 | CSEE Journal of Power and Energy Systems2017，3，4： | 14 |
| 2 | Low-Density Parity-Check Codes for Noncoherent UWB Communication Systems显示文摘In order to guarantee reliable data transmission, powerful channel coding techniques are usually required in noncoherent ultra-wideband(UWB) communication systems. Accordingly, several forward error correction(FEC) codes, such as Reed-Solomon and convolutional codes have been used in noncoherent UWB systems to improve the bit error rate(BER) performance. In this paper, low-density parity-check(LDPC) codes are further studied as more powerful FEC candidates for noncoherent UWB systems. Two LDPC codes and the corresponding decoding procedures are presented for noncoherent UWB systems. Moreover, performance comparison between the LDPC codes and other FEC codes are provided for three major noncoherent UWB communication systems, namely, noncoherent pulse position modulation(NC-PPM), transmitted reference(TR) and transmitted reference pulse cluster(TRPC). Both theoretical analysis and simulation results show that the two investigated LDPC codes outperform other existing FEC codes with limited penalty in terms of complexity and therefore they are promising FEC candidates for noncoherent UWB systems with low-cost and low-power consumption. | Zhonghua Liang Junshan Zang Xiaojun Yang Xiaodai Dong Huansheng Song | 2017 | China Communications2017，14，7： | 2 |
| 3 | Integration Interval Determination and Decision Threshold Optimization for Improved TRPC-UWB Communication Systems显示文摘Integration interval and decision threshold issues were investigated for improved transmitted reference pulse cluster(iTRPC-)ultra-wideband(UWB)systems. Our analysis shows that the bit error rate(BER)performance of iTRPC-UWB systems can be significantly improved via integration interval determination(IID)and decision threshold optimization. For this purpose,two modifications can be made at the autocorrelation receiver as follows. Firstly,the IID processing is performed for autocorrelation operation to capture multi-path energy as much as possible. Secondly,adaptive decision threshold(ADT)instead of zero decision threshold(ZDT),is used as estimated optimal decision threshold for symbol detection. Performance of iTRPCUWB systems using IID and ADT was evaluated in realistic IEEE 802.15.4a UWB channel models and the simulation results demonstrated our theoretical analysis. | Zhonghua Liang Junshan Zang Xiaojun Yang Xiaodai Dong Huansheng Song | 2017 | China Communications2017，14，5： | 2 |
| 4 | Locally Minimum Storage Regenerating Codes in Distributed Cloud Storage Systems显示文摘In distributed cloud storage systems, inevitably there exist multiple node failures at the same time. The existing methods of regenerating codes, including minimum storage regenerating(MSR) codes and minimum bandwidth regenerating(MBR) codes, are mainly to repair one single or several failed nodes, unable to meet the repair need of distributed cloud storage systems. In this paper, we present locally minimum storage regenerating(LMSR) codes to recover multiple failed nodes at the same time. Specifically, the nodes in distributed cloud storage systems are divided into multiple local groups, and in each local group(4, 2) or(5, 3) MSR codes are constructed. Moreover, the grouping method of storage nodes and the repairing process of failed nodes in local groups are studied. Theoretical analysis shows that LMSR codes can achieve the same storage overhead as MSR codes. Furthermore, we verify by means of simulation that, compared with MSR codes, LMSR codes can reduce the repair bandwidth and disk I/O overhead effectively. | Jing Wang Wei Luo Wei Liang Xiangyang Liu Xiaodai Dong | 2017 | China Communications2017，14，11： | 2 |
| 5 | Error Performance of Selection Combining and Switched Combining Systems in Rayleigh Fading Channels With Imperfect Channel Estimation显示文摘 | Lei Xiao Xiaodai Dong | 2005 | IEEE2005，54，06： | 1 |
| 6 | On Diversity Reception of Narrow-Band 16 STAR-QAM in fast Rician Fading 显示文摘 | TJENG THIANG TJHUNG XIAODAI DONG | 1997 | Vehicular Technology IEEE Transactions on1997，46，4： | 1 |
| 7 | Polychromic carbon black: Laser galvanized multicolour fluorescence display显示文摘Recovered carbon black (rCB),a very economical and abundance source of material,is transformed into dazzling multicolour fluorescence and visual display for the first time by way of a scanning focused laser treatment.This laser-initiated process is both straightforward and versatile,catering to both micro-and macro-scopic patterning with the sample in ambient or helium environment.The observed phenomenon is attributed to both chemical and structural induced colouration of rCB powder.Chemically,carbon infusion of oxidised metal occurs when photothermal reaction takes place in ambient.After laser modification with the sample in helium environment,the powder not only fluoresces due to sulphur impurities,control annealing of these powders results in formation of periodic arrangements of carbon nanoparticles.The periodicity of these arrangement falls within the range of visible wavelength,hence contributing to the visually observable rainbow coloured rCB flakes.The patterned sample is also transferrable using PDMS stamps.This in turn broadens the application of this material in flexible electronic devices/displays.Photocurrent measurements show most significant enhancement under yellow light illumination.Furthermore,in the presence of an applied potential,the fluorescence detected from the sample can easily be switched off.All in all,we present a simple process to add multiple functionalities to a material that is both inexpensive and sustainable. | Sharon Xiaodai Lim Kae Lin Wong Zheng Zhang Antonio H. Castro Neto Chorng-Haur Sow | 2019 | Nano Research2019，12，4： | 1 |
| 8 | Effect of Cryogenic Treatments on Mechanical Properties of 2A11 Aluminum Alloy显示文摘 | Junjie Wang Xiaodai Xue1 Zhenqiang Yang | | 0，，10： | 1 |
| 9 | Cyclic prefixed single cariier transmission in uhra-wideband communications显示文摘 | Wang Yue Dong Xiaodai | 2006 | IEEE Transaction on Wireless Communications2006，5，8： | 1 |
| 10 | Spectrum shaping and NBI suppression in UWB communications 显示文摘 | WANG Yue DONG Xiaodai FAIR I J | 2007 | IEEE Transactions on Wireless Communications2007，5，6： | 1 |
| 11 | Comparison of frequency offset and timing offset effects on the performance of SC-FDE and OFDM over UWB channels显示文摘 | Wang Yue Dong Xiaodai | 2009 | IEEE Transactions on Vehicular Technology2009，58，1： | 1 |
| 12 | Frequency domain channel estimation for SC-FDE in UWB communications显示文摘 | WANG Yue DONG Xiaodai | | 0，，12： | 1 |
| 13 | Experimental discovery and verification of the third type of DC gas flow in pulse tube cryocooler显示文摘 | Chao Gu Yuan Zhou Junjie Wang Huikun Cai Xiaodai Xue | 2011 | Cryogenics2011，，4： | 1 |
| 14 | Hybrid PPM-BPSK for transmitted reference pulse cluster systems in UWB and 60-GHz channels显示文摘 | Dai Yongyu Dong Xiaodai | 2014 | IEEE Wireless Communications Letters2014，3，6： | 1 |
| 15 | Improved lowcomplexity transmitted reference pulse cluster for ultra-wideband communications显示文摘 | Liang Zhonghua Dong Xiaodai Jin Li | 2012 | IET Commun2012，6，7： | 1 |
| 16 | Performance of a new transmitted reference pulse cluster system for UWB communications显示文摘 | Dong Xiaodai Jin Li ORLIK P | 2008 | IEEE Transactions on Vehicular Tecnhology2008，57，5： | 1 |
| 17 | Integration interval determination algorithms for BER minimization in UWB transmitted reference pulse cluster systems显示文摘 | Jin Li Dong Xiaodai Liang Zhonghua | 2010 | IEEE Transactions on Wireless Communications2010，9，8： | 1 |
| 18 | A novel refrigerator attaining temperature below λ point显示文摘The present study proposes a novel refrigerator in theory, which uses 4He as working fluid to directly reach 2.3 K and uses a small amount of 3He to attain the temperature below 1.7 K. The compact and highly efficient new refrigerator works with the Vuilleumier cycle. The novel refrigerator is driven by a thermal compressor which creatively uses mix-refrigerants J-T refrigerator alternative to liquid nitrogen as the power source. Furthermore, the Vuilleumier cycle can be used to achieve temperature below liquid helium with the improvement of the ultra-low temperature regenerator material. A new method of reaching the temperature below 1.7 K is proposed on the regenerative refrigerator, which could be an important breakthrough for the cryogenic science and technology. | ZHOU Yuan XUE XiaoDai WANG JunJie GU Chao | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，8： | 1 |
| 19 | Performance of transmitted reference pulse cluster ultra‐wideband systems with forward error correction显示文摘 | Zhonghua Liang Xiaodai Dong T. Aaron Gulliver Xuewen Liao | 2014 | Syst2014，，2： | 1 |
| 20 | Linear interpolation in pilot symbol assited channel estimation for OFDM显示文摘 | Dong Xiaodai Lu Wusheng Song C K | 2007 | IEEE Trans on Wireless Communications2007，6，5： | 1 |
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