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| 1 | A Novel Hybrid Seven-Level Converter for Permanent Magnet Synchronous Motor Driving System Based on Model Predictive Control显示文摘A novel hybrid three-phase seven-level converter is proposed in the paper.Each phase consists of a four-level bridge and a two-level H bridge,which contains ten switching devices and a floating capacitor.The circuit structure is introduced and working principle of the converter containing 14 commutation paths is analyzed,which is easy to control the floating capacitor voltage.In order to drive permanent magnet synchronous motor(PMSM)with the proposed converter,model predictive control(MPC)strategy is adopted.The control objectives such as controlling the currents of PMSM and capacitor voltages balancing are included in a cost function with two weight factors,which can control the currents of PMSM and balance the capacitor voltages simultaneously.To validate the proposed control scheme,simulations in two cases are carried out by using Matlab/Simulink software.Finally,the feasibility and efficiency in two cases are verified with the experimental test bench based on RT_LAB. | Yuansheng Hu Cungang Hu Pinjia Zhang Yunlei Zhang | 2019 | CES Transactions on Electrical Machines and Systems2019，3，4： | 6 |
| 2 | Modeling and Simulating for Artificial Neural Network-Based Direct Torque Control for Induction Motor Drive显示文摘 | Wang Qunjing Chen Quan Jiang Weidong Hu Cungang | 2007 | 电工技术学报2007，22，3： | 5 |
| 3 | Migration capacity of human umbilical cord mesenchymal stem cells towards glioma in vivo显示文摘High-grade glioma is the most common malignant primary brain tumor in adults.The poor prognosis of glioma,combined with a resistance to currently available treatments,necessitates the development of more effective tumor-selective therapies.Stem cell-based therapies are emerging as novel cell-based delivery vehicle for therapeutic agents.In the present study,we successfully isolated human umbilical cord mesenchymal stem cells by explant culture.The human umbilical cord mesenchymal stem cells were adherent to plastic surfaces,expressed specific surface phenotypes of mesenchymal stem cells as demonstrated by flow cytometry,and possessed multi-differentiation potentials in permissive induction media in vitro.Furthermore,human umbilical cord mesenchymal stem cells demonstrated excellent glioma-specific targeting capacity in established rat glioma models after intratumoral injection or contralateral ventricular administration in vivo.The excellent glioma-specific targeting ability and extensive intratumoral distribution of human umbilical cord mesenchymal stem cells indicate that they may serve as a novel cellular vehicle for delivering therapeutic molecules in glioma therapy. | Cungang Fan Dongliang Wang Qingjun Zhang Jingru Zhou | 2013 | Neural Regeneration Research2013，8，22： | 5 |
| 4 | Effect of Conservation Tillage Practices on Soil Phosphorus Nutrition in an Apple Orchard显示文摘Soil phosphorus(P) is an essential and limiting element for plant growth, which is significantly affected by different approaches to soil management. In order to reveal the effect of different management approaches on soil P and phosphatase activity in 0–20 cm and 20–40 cm soil, this research was conducted to study variations in the characteristics of P and phosphatase activity under 3-year tillage without mulching(CK), notillage with corn straw mulching(NTSM) and no-tillage with grass(NTG) in Liaoning apple orchard. The results showed that NTSM and NTG could significantly increase soil P content(P < 0.05) as compared with CK. However, the effect was different between NTSM and NTG; with the NTSM approach, the improvement in the P content in 20–40 cm was remarkable, and in the NTG approach, the improvement in the soil surface P content was significant. At the same time, soil phosphatase activity significantly increased(P < 0.05) under NTSM and NTG. The soil surface and 20–40 cm phosphodiesterase(PD) activity was enhanced under the two management approaches, however, the effect of NTG was stronger than NTSM. In addition, NTSM was more conducive to increasing alkaline phosphomonoesterase(Al P), and NTG was more conducive to increasing acid phosphomonoesterase(Ac P). Our findings highlight the variation of dominant mechanisms involved in soil P with different mulching materials application. NTSM and NTG could have the potential to increase P content and phosphatase activity, and provide a basis for using this method to improve P phytoavailability and reduce the application of soil fertilizer. | YANG Xiaozhu LI Zhuang CHENG Cungang | 2016 | Horticultural Plant Journal2016，2，6： | 2 |
| 5 | Key management for role hierarchy in distributed systems 显示文摘 | Li Celia Yang Cungang Cheung Richard | 2007 | Journal of Network and Computer Applications2007，30，3： | 1 |
| 6 | Access control in a hierarchy using one-way hash functions显示文摘 | Cungang Yang Celia Li | 2004 | Computer Security2004，23，： | 1 |
| 7 | Simultaneous determination of ipratropium and salbutamol in rat plasma by LC–MS/MS and its application to a pharmacokinetic study显示文摘 | Jingwen Wu Cungang Ding Qinghua Ge Zhou Li Zhen Zhou Xiaojin Zhi | 2011 | Journal of Chromatography B2011，，： | 1 |
| 8 | Key Techniques and Important Issues for Slurry Shield Under-passing Embankments: A Case Study of Hangzhou Qiantang River Tunnel 显示文摘 | LIN Cungang ZHANG Zhongmiao WU Shiming | 2013 | Tunnelling and Underground Space Technology2013，38，： | 1 |
| 9 | Designing a complete model of role-based access control system for distributed networks显示文摘 | ZHANG Chang N YANG Cungang | 2002 | Journal of Information Science and Engineering2002，18，： | 1 |
| 10 | The development and application of silicon Neutron Transmutation Doping (NTD) technology in China显示文摘The research and development history of silicon Neutron Transmutation Doping (NTD) technology and its applications at home and abroad are introduced in this paper.The advantages of NTD,compared with conventional technology of doping,are narrated.The principle of NTD as well as the implementation of the main procedures related to Si NTD is explained.The market demand tendency is prospected,and the advanced measures on NTD quality control are described. | Qiao Chenyang Sun Zhiyong Ke Guotu Lu Cungang Shen Feng Chen Huiqiang | 2009 | Engineering Sciences2009，7，4： | 0 |
| 11 | DIPLOMATIC TRANSFORMATION AND DEVELOPING A NEW TYPE OF INTERNATIONAL RELATIONS: A PERSPECTIVE TO OBSERVE AND UNDERSTAND NEW CHINA’S DIPLOMACY显示文摘The founding of the People’s Republic of China in 1949 marked the greatest turning point in Chinese political history and Chinese diplomatic history of the 20th century.The Communist Party of China(CPC)seizing the political power of a major country in the East with a 5000-year history of continued civilization gave rise to the necessity and possibility for China’s diplomacy to open a new situation and write a new chapter.In the past 70 years,under the firm leadership of the CPC,China’s diplomacy has undergone three rounds of transformation against an international situation amidst winds of change,and eventually been engaged in developing a new type of international relations,as a result in achieving the said transformation. | WANG CUNGANG | 2019 | Contemporary World2019，，4： | 0 |
| 12 | HAVING FULL UNDERSTANDING OF THE TIMES, COMPLYING WITH THE TREND, STANDING FAST AND MAKING INNOVATIONS: ON CHINA'S DIPLOMACY IN FOUR DECADES OF REFORM AND OPENING-UP显示文摘The year 1978 was destined to be an extraordinary year in contemporary Chinese history,which witnessed the convening of the grd Plenary Session of the iuth National Congress of the Communist Party of China,the adoption of reform and opening up policy and setting of new journey of China's diplomacy. | WANG CUNGANG | 2019 | Contemporary World2019，，1： | 0 |
| 13 | Voluntary disclosures and peer-to-peer lending decisions:Evidence from the repeated game显示文摘This study investigates the effect of voluntary disclosures on lending decisions in the repeated game.Using a unique dataset from a peer-to-peer lending platform,'ppdai' (poipaidai),we document that voluntary disclosures in the repeated game play a stronger role in promoting funding success than those in the one-shot game.We argue that voluntary disclosures improve the bidding activity in the repeated game through which they increase funding success.In addition,the greater impact of voluntary disclosures on funding success in the repeated game only holds for loans without a personal guarantee attribution.Our extended results suggest that the subjective voluntary disclosures in the repeated game have greater information content only when borrowers have a successful borrowing experience.We also point out that voluntary disclosures in the repeated game are associated with a lower probability of default.Our results are robust to the Heckman two-step estimation that addresses the self-selection effect and a specification designed to rule out the alternative explanation from reputation in the repeated game.Our study provides new insights into the real effects of costless,voluntary and unverifiable disclosures on lending decisions. | Yan Li Cungang Li Yijun Gao | 2020 | Frontiers of Business Research in China2020，14，1： | 0 |
| 14 | Message from Editors显示文摘CONTROLLING carbon emissions to achieve green and sustainable development has become a global consensus and general trend.China established“30.60”decarbonization goal for carbon peak and carbon neutrality in 2019.As electromechanical energy conversion devices,the electrical machines and systems play important roles in both renewable energy harvesting,such as wind,tidal,ocean current energy。 | Lijian Wu Kai Wang Dawei Li Cungang Hu Junquan Chen Xiao Liu Shi Jin Wei Wang Feng Niu Hui Yang Xiaoqin Zheng Jien Ma | 2022 | CES Transactions on Electrical Machines and Systems2022，6，4： | 0 |
| 15 | Science and Technology Innovation and the Reshaping of the International Landscape显示文摘Science and technology are the first productive force.They play a revolutionary role in the development of history.The emergence of major science and technology innovations usually leads to S&T revolutions and industrial changes,which in turn stimulate the renewal of methods of production and trigger major changes in other aspects of human society. | Wang Cungang | 2023 | Contemporary World2023，，3： | 0 |
| 16 | Analyses of non-aqueous reactive polymer insulation layer in high geothermal tunnel显示文摘The scenario of geothermal tunnel is commonly observed around the world,and increases with the new constructions in the long and deep tunnels,for example in China.Tunnel insulation is generally divided into active and passive insulation.In passive insulation,it is an effective way to set low thermal con-ductivity materials as the thermal insulation layer as the choice of insulation material mainly depends on the thermal conductivity.Polymer is a kind of material with good geothermal performance,but there are relatively few studies.In this context,the transient plane source(TPS)method was used to measure the thermal conductivity of the developed polymer.Then,the temperature field of the high geothermal tunnel insulated by the non-aqueous reactive polymer layer was simulated.With the parametric analysis results,the suggestions for the tunnel layers were proposed accordingly.It revealed that the thermal conductivity of polymer first increases and then decreases with temperature.There are two rising sec-tions(?40e10?C and 20e90?C),one flat section(10e20?C)and one descending section(>90?C).It is observed the thermal conductivity of polymer increases with increase of the density of insulation layer and the density,and the thermal conductivity decreases when exposed to high temperatures.The temperature of the surrounding rocks increases with increase of the thermal conductivity and the thickness of polymer.Finally,a more economical thickness(5 cm)was proposed.Based on the parametric study,a thermal insulation layer with thermal conductivity less than 0.045 W/(m K),thickness of 5 cm and a density less than 0.12 g/cm 3 is suggested for practice. | Yu Chen Shiyu Wang Chengchao Guo Cungang Lin Chenyang Zhao | 2023 | Journal of Rock Mechanics and Geotechnical Engineering2023，15，1： | 0 |
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