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| 1 | Current status of diagnosis and treatment of bladder cancer in China-Analyses of Chinese Bladder Cancer Consortium database显示文摘Objective:To investigate current status of diagnosis and treatment of bladder cancer in China.Methods:A database was generated by Chinese Bladder Cancer Consortium(CBCC).From January 2007 to December 2012,14,260 cases from 44 CBCC centers were included.Data of diagnosis,treatment and pathology were collected.Results:The average age was 63.5 year-old and most patients were male(84.3%).The most common histologic types were urothelial carcinoma(91.4%),adenocarcinoma(1.8%),and squamous carcinoma(1.9%).According to 1973 and 2004 WHO grading system,42.0%,41.0%,and 17.0% of patients were grade 1,2,and 3,and 16.0%,48.7%,and 35.3% of patients were papillary urothelial neoplasms of low malignant potential,low,and high grade,respectively.Non-muscle invasive bladder cancer(NMIBC)and muscle invasive bladder cancer(MIBC)were 25.2% and 74.1%,respectively(0.8% not clear).Carcinoma in situ was only 2.4%.Most patients were diagnosed by white-light cystoscopy with biopsy(74.3%).Fluorescence and narrow band imaging cystoscopy had additional detection rate of 1.0% and 4.0%,respectively.Diagnostic transurethral resection(TUR)provided detection rate of 16.9%.Most NMIBCs were treated with TUR(89.2%).After initial TUR,2.6%accepted second TUR,and 45.7%,69.9%,and 58.7% accepted immediate,induced,and maintenance chemotherapy instillation,respectively.Most MIBCs were treated with radical cystectomy(RC,59.7%).Laparoscopic RCs were 35.1%,while open RC 63.4%.Extended and standard pelvic lymph node dissection were 7% and 66%,respectively.Three most common urinary diversions were orthotopic neobladder(44%),ileal conduit(31%),and ureterocutaneostomy(23%).Only 2.3% of patients accepted neo-adjuvant chemotherapy and only 18%of T3 and T4 patients accepted adjuvant chemotherapy.Conclusion:Disease characteristics are similar to international reports,while differences of diagnosis and treatment exist.This study can provide evidences for revisions of the guideline on bladder cancer in China. | Kaiwen Li Tianxin Lin 无 Wei Xue Xin Mu Enci Xu Xu Yang Fubao Chen Guangyong Li Lulin Ma Guoliang Wang Chaozhao Liang Haoqiang Shi Ming Li Mao Tang Xueyi Xue Yisong Lv Yaoliang Deng Chengyang Li Zhiwen Chen Xiaozhou Zhou Fengshuo Jin Xudong Liu Jinxin Wei Lei Shi Xin Gou Weiyang He Liqun Zhou Lin Cai Baiye Jin Guanghou Fu Xiangbo Kong Hongyan Sun Ye Tian Lang Feng Tiejun Pan Yiyi Wu Dongwen Wang Hailong Hao Benkang Shi Yaofeng Zhu Qiang Wei Ping Han Changli Wu Dawei Tian Zhangqun Ye Zheng Liu Zhiping Wang Junqiang Tian Lin Qi Minfeng Chen Wei Li Jinchun Qi Gongxian Wang Longlong Fu Zhaolin Sun Guangheng Luo Zhoujun Shen Zhaowei Zhu Jinchun Xing Zhun Wu Dong Wei Xin Chen Yanqun Na Hongfeng Guo Chunxi Wang Zhihua Lu Chuize Kong Yang Liu Jin Yang Jianyun Hu Xin Gao Jielin Li Changjun Yin Pu Li Shan Chen Zhen Du Jiongming Li Yongji Yan Xu Zhang Shuang Huang Fangjian Zhou Zhiling Zhang Yinghao Sun Shuxiong Zeng Song Cen Jiaquan Zhou Hanzhong Li Jin Wen Jian Huang | 2015 | Asian Journal of Urology2015，2，2： | 21 |
| 2 | Robust multiuser MIMO scheduling algorithms with imperfect CSI显示文摘Robust multiuser multiple-input-multiple-output (MIMO) scheduling algorithms are proposed in this paper.With imperfect channel state information (CSI),traditional scheduling algorithms for the multiuser MIMO system based on the zero forcing precoding scheme will lose some performance due to the multi-user interference (MUI).In order to improve the system average throughput,we study the robust multiuser MIMO scheduling problem with imperfect CSI.From the average capacity formula,we derive a robust factor which can transform the robust multiuser MIMO scheduling problem into the traditional one,thus most existing non-robust scheduling algorithms can be robust if this factor is adopted.Simulation results show that compared with the traditional algorithms,the proposed robust algorithms can improve the system average throughput significantly under the CSI error environment. | MAO JunLing GAO JinChun LIU YuanAn XIE Gang ZHANG Jian | 2012 | Science China(Information Sciences)2012，55，4： | 4 |
| 3 | Effects of Huatan Tongluo decoction on vascular endothelial growth factor receptor 2 expression in synovial tissues of rats with collagen-induced arthritis显示文摘OBJECTIVE: To determine the therapeutic effect and potential mechanism of Huatan Tongluo decoction on rats with collagen-induced arthritis.METHODS: Forty specific pathogen-free Wistar rats were selected, and 10 were randomly selected as the control(group 1). The remaining rats were injected intradermally with emulsified type Ⅱ bovine collagen at the tail base and back, followed by a booster 7 d post first immunization. After establishing collagen-induced arthritis(CIA), rats were randomly divided into three groups(n = 10). The rats were treated orally for 30 d as follows: group 1, saline; group 2, model(saline); group 3, tripterygium polyglycoside(TP; 7.81 mg/kg, positive control);group 4, Huatan Tongluo decoction(HTTL; 7.5 g/kg). Body weight, ankle swelling and arthritis index were measured over the course of the study. The rats were sacrificed 30 d after treatment. Morphological changes in the synovium were observed by hematoxylin and eosin staining. Pannus formation and synovial thickness in the left ankle were observed by color Doppler ultrasoundVascular endothelial growth factor(VEGF) and VEGFR2 protein levels were measured by immunohistochemistry.VEGF/VEGFR2 mRNA levels were measured by real-time quantitative polymerase chain reaction.RESULTS: Compared with the model group, a significantly lower arthritis index was observed in the positive control group(P < 0.05) and HTTL group(P < 0.01), after treatment. Both positive control and HTTL reduced intra-articular pannus formation and synovial thickening. Furthermore, VEGF mRNA,and VEGFR2 protein and mRNA levels were significantly downregulated(P < 0.05) in the treatment groups.CONCLUSION: Inhibition of the expression of VEGF and VEGFR2 in synovial tissues and the formation of pannus and synovial hyperplasia may be part of the mechanism of HTTL for relieving the symptoms of rheumatoid arthritis in CIA rats. | Chen Jinchun Qiu Mingshan Li Yihan Zhang Qian Zhang Yiyan Lin Shuangjie Zhang Shaohong Qian Lixia Gao Hai Li Liang-cheng | 2019 | Journal of Traditional Chinese Medicine2019，39，2： | 4 |
| 4 | Lifetime prediction of electrical connectors under multiple environment stresses of temperature and particulate contamination显示文摘Electrical connectors play a significant role in the electronic and communication systems.As they are often exposed in the atmosphere environment, it is extremely easy for them to cause electrical contact failure.It is essential to carry out the reliability modeling and predict the lifetime.In the present work, the accelerated lifetime testing method which is on account of the uniform design method was designed to obtain the degradation data under multiple environmental stresses of temperature and particulate contamination for electrical connectors.Based on the degradation data, the pseudo life can be acquired.Then the reliability model was established by analyzing the pseudo life.Accordingly, the reliability function and reliable lifetime function were set up, and the reliable lifetime of the connectors under the multiple environment stresses of temperature and particulate contamination could be predicted for electrical connectors. | Li Qingya Gao Jinchun Xie Gang Jin Qiuyan Ji Rui | 2016 | The Journal of China Universities of Posts and Telecommunications2016，23，5： | 3 |
| 5 | Energy Efficiency Optimization for OFDM-Based Cognitive Radio Systems: A Water-Filling Factor Aided Search Method 显示文摘 | MAO Junling XIE Gang GAO Jinchun | 2013 | IEEE Transactions on Wireless Communications2013，12，5： | 1 |
| 6 | Sort-based relay selection algorithm for decode-and-forward relay system显示文摘In this paper, a sort-based relay selection algorithm is proposed for decode-and-forward wireless relay systems. The proposed algorithm can reduce computational complexity and system overhead in the relay selection for practical decode-and-forward wireless relay systems with multiple sources and multiple relays. This would be a very important improvement. Firstly, the sufficient and necessary conditions for a relay to be feasible to a source are derived. By adopting relay transmission via its feasible relay, the source can improve channel capacity compared to direct transmission. Then, a sort-based relay selection algorithm is proposed based on the sufficient and necessary conditions. In the proposed algorithm, each relay makes decision on its feasibility individually, but the final source-relay paring decision is made in a centralized manner. Simulation results show that the proposed algorithm can provide considerable system performance improvement over the existing algorithm. Especially at low signal-to-noise (SNR) region, the performance of the proposed algorithm almost reaches the optimal one. | XIE Gang LIU YuanAn GAO JinChun LI XingZheng | 2013 | Science China(Information Sciences)2013，56，2： | 1 |
| 7 | Robust design of pilot-symbol-aided MIMO channel estimation显示文摘 | Luo Zhengdong Liu Yuan'an Gao Jinchun | 2004 | Journal of China Universities of Posts and Telecommunications2004，11，3： | 1 |
| 8 | Investigations on the Effect of Electrical Contact Degradation on High Speed Wide-Band Signal Integrity显示文摘Electrical contact degradation will affect the signal integrity resulting in poor communication performance.In the present work,the effect of electrical contact degradation on wide-band digital signal integrity was studied using both the theoretical analysis and experimental testing.The characteristics of digital signals with rise times of 200 ps,400 ps,600 ps and 800 ps through connectors with different degradation levels were studied.The maximum bandwidth of these signals can reach up to 1.75 GHz.An equivalent model of the connector with degraded contact surface was developed and the experimental results are consistent with the model results approximately.The influence of capacitance characteristics caused by degraded contact surface on digital signal waveform was calculated and analyzed.The results of this paper are helpful in developing a better understanding of the characteristics of wide-band digital signal waveforms through the degraded contact surface and provide a theoretical support to identify failure features in fault diagnosis. | WANG Ziren GAO Jinchun JI Rui BILAL Hafiz Muhammad | 2020 | Chinese Journal of Electronics2020，29，3： | 1 |
| 9 | Characteristics of Electric Charges Carried by Dust Particles and Their Effects on Connector Contact Failure显示文摘 | GAO Jinchun XIE Gang | 2012 | Chinese Journal of Electronics2012，21，3： | 1 |
| 10 | Energy efficiency optimization for OFDM-based cognitive radio systems: a water-filling factor aided search method显示文摘 | MAO Junling XIE Gang GAO Jinchun | 2013 | IEEE Trans on Wireless Communications2013，12，5： | 1 |
| 11 | Enhanced EVD based channel estimation and pilot decontamination for Massive MIMO networks显示文摘The enhanced eigenvalue decomposition(EEVD) based channel estimation algorithm, which could solve the pilot contamination problem in massive multiple-input and multiple-output(Massive MIMO) channel estimation when the number of antennas at base stations(NABT) tends to infinity, is proposed in this paper. The algorithm is based on the close relationship between covariance matrix of received pilot signal and the channel fast fading coefficient matrix, i.e. the latter is the eigenvector matrix of the former when NABT tends to infinity. Therefore, we can get a set of normalized base vectors from the eigenvalue decomposition(EVD) of sample covariance matrix in practical Massive MIMO networks. By multiplying the received pilot signal with conjugate transpose of normalized base vector matrix, the channel matrix is projected to a lower dimensional matrix, and the intra-cell and inter-cell interference can be eliminated completely when NABT tends to infinity. Thus, we only need to estimate the lower dimensional projected matrix during the channel estimation. Simulation results show that the mean square error(MSE) performance of channel estimation is improved with approximately two orders of magnitude when the signal-to-noise ratio(SNR) is 40 d B, compared with EVD based channel estimation algorithm. And the signal-to-interference ratio(SIR) is improved greatly as well. The increment of SIR becomes larger and larger as SNR increasing. | Guo Mangqing Xie Gang Gao Jinchun Liu Yuan'an | 2015 | The Journal of China Universities of Posts and Telecommunications2015，22，6： | 1 |
| 12 | Resource allocation for MIMO-OFDMA downlink based cognitive radio systems with imperfect channel learning显示文摘This paper is concerned with the resource allocation for multiple input multiple output and orthogonal frequency division multiplexing access(MIMO-OFDMA)downlink cognitive radio systems where a cognitive radio MIMO-OFDMA system is under spectrum sharing with an existing primary radio(PR)network.We use the channel learning scheme to estimate the channel information from cognitive radio transmitter(CR-TX)to PR and then make beamforming to transmit signal.Considering the interference from CR-TX to PR caused by the imperfect channel learning,we intend to maximize CR throughput under the interference power constraint at PR and CR transmit power constraint.A nearly optimal subcarrier and power allocation algorithm with linear complexity is proposed.The proposed algorithm is global optimal when the maximum transmit power is beyond certain threshold.Simulation results show that the proposed algorithm has a good performance very close to the global optimal algorithm. | LI XiuWen GAO JinChun LIU YuanAn XIE Gang MAO JunLing DENG PanLiang | 2013 | Science China(Information Sciences)2013，56，10： | 0 |
| 13 | Ergodic interference alignment for MIMO interference system with variable channel显示文摘The authors pay focus on the K user multiple-input multiple-output(MIMO) Gaussian interference channel(IC) with M transmitting antennas and N receiving antennas, in which min(M, N)/max(M, N)≧(K-1)/[K(K-2)] and K >3. The channel coefficients are variable, time varying or frequency selectively drawn from a continuous distribution. Based on ergodic interference alignment(IA), an achievable scheme was proposed to achieve a total of KMN/(M +N) degrees of freedom(DoF). The ergodic IA scheme can reach the optimal Do F value with simply linear beamforming and finite symbols. Furthermore, the achievable rate of the ergodic IA scheme was derived at any signal-to-noise ratio(SNR). With numerical simulation, the performance of the proposed scheme is evaluated. | Ren Haiying Liu Yuan'an Liu Fang Gao Jinchun Liu Kaiming Xie Gang | 2015 | The Journal of China Universities of Posts and Telecommunications2015，22，1： | 0 |
| 14 | TMAHS:a truthful multi-unit double auction framework for heterogeneous spectrum in secondary market显示文摘Auction was widely used to tackle spectrum allocation and sharing in the secondary market under the condition of spectrum scarcity. In real communication system, such as broadband communication, the utilization of spectrum resource is various because of different requirements and complex application scenarios. So, these schemes cannot be directly applied to the above wireless communication system. To solve this problem, a new model where sellers/buyers can sell/buy multi-unit for heterogeneous spectrum was proposed and a truthful multi-unit double auction framework was designed for heterogeneous spectrum trading. A valuation function is first applied to represent the buyer's true valuation of the sub-band and reflect the buyer's satisfaction degree and a novel concept termed ‘virtual player' was introduced. Then the buyer group was constructed based on the conflict graph to reuse the same spectrum among interference-free buyers in both spatial and temporal domains. The winner determination strategy and algorithm of clearing price were designed elaborately. According to the theoretical analysis, the scheme can satisfy three critical economic properties: truthfulness, individual rationality, and budget balance. Finally, simulation results show that the proposed scheme can achieve better user satisfaction, auction efficiency and spectrum reuse rate for the real communication system. The proposed auction framework is practical and effective. | Li Xin Xie Gang Gao Jinchun | 2019 | The Journal of China Universities of Posts and Telecommunications2019，26，1： | 0 |
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