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1Bone grafts and biomaterials substitutes for bone defect repair:A review显示文摘Bone grafts have been predominated used to treat bone defects,delayed union or non-union,and spinal fusion in orthopaedic clinically for a period of time,despite the emergency of synthetic bone graft substitutes.Nevertheless,the integration of allogeneic grafts and synthetic substitutes with host bone was found jeopardized in long-term follow-up studies.Hence,the enhancement of osteointegration of these grafts and substitutes with host bone is considerably important.To address this problem,addition of various growth factors,such as bone morphogenetic proteins(BMPs),parathyroid hormone(PTH)and platelet rich plasma(PRP),into structural allografts and synthetic substitutes have been considered.Although clinical applications of these factors have exhibited good bone formation,their further application was limited due to high cost and potential adverse side effects.Alternatively,bioinorganic ions such as magnesium,strontium and zinc are considered as alternative of osteogenic biological factors.Hence,this paper aims to review the currently available bone grafts and bone substitutes as well as the biological and bio-inorganic factors for the treatments of bone defect.Wenhao Wang Kelvin W.K.Yeung 2017Bioactive Materials2017,2,4:66
2Natural variation in Ghd7.1 plays an important role in grain yield and adaptation in rice显示文摘Wenhao Yan Haiyang Liu Xiangchun Zhou Qiuping Li Jia Zhang Li Lu Touming Liu Haijun Liu Chengjun Zhang Zhanyi Zhang Guojing Shen Wen Yao Huaxia Chen Sibin Yu Weibo Xie Yongzhong Xing 2013Cell Research2013,23,7:39
3Geochronology, geochemistry, and its geological significance of the Permian Mandula mafic rocks in Damaoqi, Inner Mongolia显示文摘The Hujierte-Chaganhadamiao volcanic-plutonic sequence is located in the Mandula area of northern Damaoqi, Inner Mongolia. It contains mainly mafic volcanics, with several ultramafic blocks in its central part and mafic-intermediate intrusions in the east. The zircon U-Pb ages of the gabbro and basalt samples are 278.5±3.0 Ma (MSWD=0.66) and 273.7±1.0 Ma (MSWD=0.36), respectively. These ages constrain the magmatism occurred in the Early Permian. The Mandula Permian mafic rocks are characterized by low abundances of REE and slightly LREE-enriched chondrite-normalized N-MORB-type REE patterns. And these mafic samples have high ( 143 Nd/ 144 Nd) i (0.51262-0.51270), relatively high positive ε Nd (t) (3.4-8.0), and high Mg # (49-54), suggesting derivation from the depleted asthenosphere mantle source. But they also show the enrichment in large ion lithophile elements (LILE, e.g. Rb, Ba and Sr), depletion in high field strength elements (HFSE); distinctly negative Nb, Ta anomalies and slightly negative P, Ti anomalies; high ( 87 Sr/ 86 Sr) i (0.70490-0.70537), low ( 206 Pb/ 204 Pb) i (17.39-17.93). All of these resemble the characteristics of the enriched mantle source or involvement of arc materials in the magma genesis. Furthermore, as shown in the correlation plots of ε Nd (t) vs ( 87 Sr/ 86 Sr) i , ( 206 Pb/ 204 Pb) i vs ( 207 Pb/ 204 Pb) i and ( 208 Pb/ 204 Pb) i , La/Ba La/Nb vs La/Nb, and La/Nb ratio, the magma source could have been experienced the contamination and metasomation from the previous subduction process. And the positive correlation between the selected major oxides and trace elements could be explained by the contamination from continental crust and arc materials during the magmatic emplacement. Combined with the distinct geochemistry features of Mandula mafic samples and many previous researches in the study area, the Early Permian magmatism in Mandula occurred under an extensional rift setting, and a juvenile ocean basin probably had already been formed after further development.CHEN Chen ZHANG ZhiCheng GUO ZhaoJie LI JianFeng FENG ZhiShuo TANG WenHao 2012Science China Earth Sciences2012,55,1:30
4A novel strong tracking cubature Kalman filter and its application in maneuvering target tracking显示文摘The fading factor exerts a significant role in the strong tracking idea. However, traditional fading factor introduction method hinders the accuracy and robustness advantages of current strong-tracking-based nonlinear filtering algorithms such as Cubature Kalman Filter(CKF) since traditional fading factor introduction method only considers the first-order Taylor expansion. To this end, a new fading factor idea is suggested and introduced into the strong tracking CKF method.The new fading factor introduction method expanded the number of fading factors from one to two with reselected introduction positions. The relationship between the two fading factors as well as the general calculation method can be derived based on Taylor expansion. Obvious superiority of the newly suggested fading factor introduction method is demonstrated according to different nonlinearity of the measurement function. Equivalent calculation method can also be established while applied to CKF. Theoretical analysis shows that the strong tracking CKF can extract the thirdorder term information from the residual and thus realize second-order accuracy. After optimizing the strong tracking algorithm process, a Fast Strong Tracking CKF(FSTCKF) is finally established. Two simulation examples show that the novel FSTCKF improves the robustness of traditional CKF while minimizing the algorithm time complexity under various conditions.An ZHANG Shuida BAO Fei GAO Wenhao BI 2019Chinese Journal of Aeronautics2019,32,11:22
5Cardiotoxicity of 5-fluorouracil and capecitabine in Chinese patients: a prospective study显示文摘Background:5-Fluorouracil(5-FU)and capecitabine-associated cardiotoxicity ranging from asymptomatic electro-cardiography(ECG)abnormalities to severe myocardial infarction has been reported in a number of studies,but such cardiotoxicity in Chinese patients with malignant diseases has not been investigated to date.In the present study,we aimed to prospectively evaluate the incidence rates and clinical manifestations of 5-FU-and capecitabine-associated cardiotoxicity in cancer patients recruited from multiple centers in China.Methods:Among the 527 patients who completed the study,196 received 5-FU-based chemotherapy and 331 received capecitabine-based chemotherapy as either first-line or adjuvant therapy.Adverse events were reported during the treatment and up to 28 days of follow-up.Outcome measures included ECG,myocardial enzymes,cardiac troponin,brain natriuretic peptide and echocardiography.Univariate analysis and logistic regression were performed for subgroup analysis and identification of significant independent variables that are associated with cardiotoxicity of both agents.Results:In total,161 of 527 patients(30.6%)experienced cardiotoxicity.The incidence rate of cardiotoxicity was 33.8%(112/331)in the capecitabine group,which was significantly higher than the rate of 25%(49/196)in the 5-FU group(P=0.0042).110/527 patients(20.9%)suffered arrhythmia,105/527(19.9%)developed ischemic changes,while only 20/527 patients(3.8%)presented heart failure and 6/527 patients(1.1%)had myocardial infarction.Pre-existing cardiac disease,hypertension,capecitabine-based chemotherapy and duration of treatment were identified as sig-nificant risk factors associated with cardiotoxicity.The odds ratio were 15.7(prior history of cardiac disease versus no history),1.86(capecitabine versus 5-FU),1.06(5-8 versus 1-4 chemotherapy cycles)and 1.58(hypertension versus no hypertension),respectively.Conclusions:Cardiotoxicity induced by fluoropyrimidines in the Chinese population may be underestimated in clini-cal practice.Close monitoring of patients is recommended,especially for those patients at high risk for cardiotoxicity.Possible risk factors are duration of treatment,capecitabine-based chemotherapy,pre-existing cardiac diseases and hypertension.Trial registration This study was initiated on January 22,2014 and has been retrospectively registered with the registra-tion number ChiCTR1800015434 .Jianjun Peng Chao Dong Chang Wang Weihua Li Hao Yu Min Zhang Qun Zhao Bo Zhu Jun Zhang Wenliang Li Fenghua Wang Qiong Wu Wenhao Zhou Ying Yuan Meng Qiu Gong Chen 2018Cancer Communications2018,38,1:23
6The Current Situation on Major Depressive Disorder in China:Research on Mechanisms and Clinical Practice显示文摘Depression is the most disabling disorder worldwide that accounts for the highest proportion of global burden attributable to mental disorders. Major depressive disorder(MDD) is characterized by deep sadness, reduced energy,vegetative nervous system dysregulation, cognitive dysfunction, and even a high suicidal tendency. Although other treatment choices are available, antidepressant medication is the front-line treatment option for MDD. Regarding clinical efficacy, only ~50% of patients respond to frontline antidepressants, and <33% obtain remission. Currently, objective indexes to guide clinical decisions are still lacking. Furthermore, knowledge about the neurobiological mechanisms underlying discrepant antidepressant outcomes is still also fragmentary. In the present review, we discuss the current research progress and clinical opinions on MDD in China.Zhenghua Hou Wenhao Jiang Yingying Yin Zhijun Zhang Yonggui Yuan 2016Neuroscience Bulletin2016,32,4:16
7Challenges and Development Prospects of Ultra-Long and Ultra-Deep Mountain Tunnels显示文摘1. Introduction Social development has led to the placement of high standards on ultra-long and ultra-deep mountain tunnels. Disasters may be encountered during the construction and maintenance of such mountain tunnels due to high geostress, high geotemperature, high hydraulic pressure, and special adverse strata, in addition to various other problems caused by engineering activities. To deal with uncertain geological conditions during mountain tunnel construction, comprehensive geological prediction, refined monitoring, and dynamic design and construction methods based on information technology should be adopted. For the operation and maintenance of ultra-long tunnels, the concepts of dynamic evacuation rescue, active protection, energy conservation, and environmental protection should be fully embodied in order to address significant problems related to ventilation, rescue situations, and energy consumption. Moreover, integrated construction and maintenance should be carried out to achieve digital sensing and intelligent maintenance.Hehua Zhu Jinxiu Yan Wenhao Liang 2019Engineering2019,5,3:16
8ShHTL7 is a non-canonical receptor for strigolactones in root parasitic weeds显示文摘Yao, Ruifeng Wang, Fei Ming, Zhenhua Du, Xiaoxi Chen, Li Wang, Yupei Zhang, Wenhao Deng, Haiteng Xie, Daoxin 2017Cell Research2017,27,6:15
9Chinese Stroke Association guidelines for clinical management of cerebrovascular disorders: executive summary and 2019 update of clinical management of cerebral venous sinus thrombosis显示文摘Aim Cerebral venous sinus thrombosis(CVST)is a less common cerebrovascular disease that predominantly affects young patients.The incidence of CVST is 2-5/10000000/year,accounting for 0.5%-1%of all stroke.To reduce mortality and morbidity associated with CVST,Chinese Stroke Association commissioned the authors to write the current guideline on the management of CVST.Methods PubMed(MEDLINE),CNKI and Wanfang database were searched for studies related to CVST from 1 January 1990 to 31 July 2019.Data were synthesised by evidence tables.Each recommendation was fully discussed by the writing group members and reviewed by Chinese Stroke Association Stroke Fellow Committees.Levels of evidence grading algorithm of Chinese Stroke Association was used to grade each recommendation.results This guideline mainly focuses on the diagnostic evaluation,therapeutic strategies and secondary prevention of CVST.CT/CTV and MRI/MRV are recommended in the initial imaging evaluation of patients with suspected CVST.Anticoagulation therapy with low-molecular weight heparin should be initiated in patients with CVST immediately.After the acute stage,warfarin is recommended for 3-6 months to prevent the recurrence of CVST and other venous thromboembolic events.Conclusions The guideline summarises the current evidence regarding the management of CVST,and provides references for diagnosis,treatment and secondary prevention of CVST in China.Yuhua Fan Jian Yu Hongbing Chen Jian Zhang Jiangang Duan Dapeng Mo Wenhao Zhu Bo Wang Fubing Ouyang Yicong Chen Linfang Lan Jinsheng Zeng Chinese Stroke Association Stroke Council CVST Guideline Writing Committee 2020Stroke & Vascular Neurology2020,5,2:14
10Formations of groundwater hydrogeochemistry in a karst system during storm events as revealed by PCA显示文摘High-frequency samples have been collected at Jiangjia Spring, the outlet of Qingmuguan underground river system (QURS) in Chongqing in late April, 2008. The variations of hydrogeochemical compositions are found responding rapidly to storm events. Principal component analysis (PCA) of the 20 variables is employed to interpret the relationships with specific processes that control the groundwater hydrogeochemical formations. Through PCA, 84.961% of the total amount information is extracted to indicate the formations of groundwater hydrogeochemical features in QURS during storm events. The first component separates the soil erosion (i.e., increases in turbidity and concentrations of Al3+, TFe, TMn, Ba2+ and NO2?), and dilution effect (i.e., decreases in specific conductance and concentrations of HCO3?, Ca2+ and Sr2+), accounting for 41.495% of the variability in the data. The second component indicates residual fertilizers and duck’s waste from farmlands (i.e., increases in specific conductance and concentrations of Na+, NO3-, PO43-,K+and Cl-), contributing to 37.449%. The dissolution of dolomite and dolomitic limestone makes up 6.017%. During the first rainfall event, the groundwater quality is mainly affected by residual fertilizers and duck’s waste from farmlands, whereas in the second rainfall event, it is mainly affected by increased turbidity and ionic concentrations caused by soil erosion.YANG PingHeng YUAN DaoXian YUAN WenHao KUANG YingLun JIA Peng HE QiuFang 2010Chinese Science Bulletin2010,55,14:14
11Single-cell transcriptome analysis of the novel coronavirus (SARS-CoV-2) associated gene ACE2 expression in normal and non-obstructive azoospermia (NOA) human male testes显示文摘Being infected by SARS-CoV-2 may cause damage to multiple organs in patients, such as the lung, liver and heart. Angiotensin-converting enzyme 2(ACE2), reported as a SARS-CoV-2 receptor, is also expressed in human male testes. This suggests a potential risk in human male reproductive system. However, the characteristics of ACE2-positive cells and the expression of other SARS-CoV-2 process-related genes are still worthy of further investigation. Here, we performed singlecell RNA seq(scRNA-seq) analysis on 853 male embryo primordial germ cells(PGCs) and 2,854 normal testis cells to assess the effects of the SARS-CoV-2 virus on the male reproductive system from embryonic stage to adulthood. We also collected and constructed the scRNA-seq library on 228 Sertoli cells from three non-obstructive azoospermia(NOA) patients to assess the effects at disease state. We found that ACE2 expressing cells existed in almost all testis cell types and Sertoli cells had highest expression level and positive cells ratio. Moreover, ACE2 was also expressed in human male PGCs. In adulthood, the level of ACE2 expression decreased with the increase of age. We also found that ACE2 positive cells had high expressions of stress response and immune activation-related genes. Interestingly, some potential SARS-CoV-2 process-related genes such as TMPRSS2, BSG, CTSL and CTSB had different expression patterns in the same cell type. Furthermore, ACE2 expression level in NOA donors’ Sertoli cells was significantly decreased. Our work would help to assess the risk of SARS-CoV-2 infection in the male reproductive system.Xixi Liu Yidong Chen Wenhao Tang Li Zhang Wei Chen Zhiqiang Yan Peng Yuan Ming Yang Siming Kong Liying Yan Jie Qiao 2020Science China(Life Sciences)2020,63,7:14
12Effects of combined drip irrigation and sub-surface pipe drainage on water and salt transport of saline-alkali soil in Xinjiang, China显示文摘Developing effective irrigation and drainage strategies to improve the quality of saline-alkali soil is vital for enhancing agricultural production and increasing economic returns. In this study, we explored how irrigation and drainage modes (flood irrigation, drip irrigation, and sub-surface pipe drainage under drip irrigation) improve the saline-alkali soil in Xinjiang, China. We aimed to study the transport characteristics of soil water and salt under different irrigation and drainage modes, and analyze the effects of the combination of irrigation and drainage on soil salt leaching, as well as its impacts on the growth of oil sunflower. Our results show that sub-surface pipe drainage under drip irrigation significantly reduced the soil salt content and soil water content at the 0–200 cm soil depth. Under sub-surface pipe drainage combined with drip irrigation, the mean soil salt content was reduced to below 10 g/kg after the second irrigation, and the soil salt content decreased as sub-surface pipe distance decreased. The mean soil salt content of flood irrigation exceeded 25 g/kg, and the mean soil desalination efficiency was 3.28%, which was lower than that of drip irrigation. The mean soil desalination rate under drip irrigation and sub-surface pipe drainage under drip irrigation was 19.30% and 58.12%, respectively. After sub-surface drainage regulation under drip irrigation, the germination percentage of oil sunflower seedlings was increased to more than 50%, which further confirmed that combined drip irrigation and sub-surface pipe drainage is very effective in improving the quality of saline-alkali soil and increasing the productivity of agricultural crops.HENG Tong LIAO Renkuan WANG Zhenhua WU Wenyong LI Wenhao ZHANG Jinzhu 2018Journal of Arid Land2018,10,6:12
13Three-dimensional bioprinting of multicell-laden scaffolds containing bone morphogenic protein-4 for promoting M2 macrophage polarization and accelerating bone defect repair in diabetes mellitus显示文摘Critical-sized bone defect repair in patients with diabetes mellitus remains a challenge in clinical treatment because of dysfunction of macrophage polarization and the inflammatory microenvironment in the bone defect region.Three-dimensional(3D)bioprinted scaffolds loaded with live cells and bioactive factors can improve cell viability and the inflammatory microenvironment and further accelerating bone repair.Here,we used modified bioinks comprising gelatin,gelatin methacryloyl(GelMA),and 4-arm poly(ethylene glycol)acrylate(PEG)to fabricate 3D bioprinted scaffolds containing BMSCs,RAW264.7 macrophages,and BMP-4-loaded mesoporous silica nanoparticles(MSNs).Addition of MSNs effectively improved the mechanical strength of GelMA/gelatin/PEG scaffolds.Moreover,MSNs sustainably released BMP-4 for long-term effectiveness.In 3D bioprinted scaffolds,BMP-4 promoted the polarization of RAW264.7 to M2 macrophages,which secrete anti-inflammatory factors and thereby reduce the levels of pro-inflammatory factors.BMP-4 released from MSNs and BMP-2 secreted from M2 macrophages collectively stimulated the osteogenic differentiation of BMSCs in the 3D bioprinted scaffolds.Furthermore,in calvarial critical-size defect models of diabetic rats,3D bioprinted scaffolds loaded with MSNs/BMP-4 induced M2 macrophage polarization and improved the inflammatory microenvironment.And 3D bioprinted scaffolds with MSNs/BMP-4,BMSCs,and RAW264.7 cells significantly accelerated bone repair.In conclusion,our results indicated that implanting 3D bioprinted scaffolds containing MSNs/BMP-4,BMSCs,and RAW264.7 cells in bone defects may be an effective method for improving diabetic bone repair,owing to the direct effects of BMP-4 on promoting osteogenesis of BMSCs and regulating M2 type macrophage polarization to improve the inflammatory microenvironment and secrete BMP-2.Xin Sun Zhenjiang Ma Xue Zhao Wenjie Jin Chenyu Zhang Jie Ma Lei Qiang Wenhao Wang Qian Deng Han Yang Jinzhong Zhao Qianqian Liang Xiaojun Zhou Tao Li Jinwu Wang 2021Bioactive Materials2021,6,3:12
14Rectangle expansion A* pathfinding for grid maps显示文摘Search speed, quality of resulting paths and the cost of pre-processing are the principle evaluation metrics of a pathfinding algorithm. In this paper, a new algorithm for grid-based maps,rectangle expansion A*(REA*), is presented that improves the performance of A*significantly.REA*explores maps in units of unblocked rectangles. All unnecessary points inside the rectangles are pruned and boundaries of the rectangles(instead of individual points within those boundaries)are used as search nodes. This makes the algorithm plot fewer points and have a much shorter open list than A*. REA*returns jump and grid-optimal path points, but since the line of sight between jump points is protected by the unblocked rectangles, the resulting path of REA*is usually better than grid-optimal. The algorithm is entirely online and requires no offline pre-processing. Experimental results for typical benchmark problem sets show that REA*can speed up a highly optimized A*by an order of magnitude and more while preserving completeness and optimality. This new algorithm is competitive with other highly successful variants of A*.Zhang An Li Chong Bi Wenhao 2016Chinese Journal of Aeronautics2016,29,5:10
15Mesozoic and Cenozoic uplift and exhumation of the Bogda Mountain,NW China: Evidence from apatite fission track analysis显示文摘Apatite fission track(AFT)analysis on samples collected from a Paleozoic series is used to constrain the cooling history of the Bogda Mountain,northwest China.AFT ages range from 136.2 to 85.6 Ma and are younger than rock depositional ages and the mean confined track lengths(11.0e13.2 mm)mostly showing unimodal distribution are shorten,indicating significant track-annealing.Thermal histories modeling based on the distribution of fission-track lengths combined with the regional geological data show that two rapid cooling phases occurred in the latest Jurassiceearly Cretaceous and the OligoceneeMiocene.Those new data together with previous published data show that the AFT ages become younger from the southwest to northeast in the western Bogda Mountain and its adjacent areas.The fission-track ages of the southwest area are relatively older(>100 Ma),recording the earlier rapid uplift phase during the late JurassiceCretaceous,while the ages in the north piedmont of the Bogda Mountain(namely the northeast part)are younger(<60 Ma),mainly reflecting the later rapid uplift phase in the OligoceneeMiocene.The trend of younger AFT ages towards the northeast might be explained by post-Cretaceous large-scale crustal tilting towards the southwest.In the thrust fault-dominated northern limbs of the Bogda Mountain,AFT ages reveal a discontinuous pattern with age-jumps across the major fault zones,showing a possible strata tilting across each thrust faults due to the thrust ramps during the Cenozoic.The two rapid uplift stages might be related to the accretion and collision in the southern margin of the Asian continent during the late Jurassic and late Cenozoic,respectively.Wenhao Tang Zhicheng Zhang Jianfeng Li Ke Li Zhiwen Luo Yan Chen 2015Geoscience Frontiers2015,6,4:9
16Three-dimensional-printed individualized porous implants:A new“implant-bone”interface fusion concept for large bone defect treatment显示文摘Bone defect repairs are based on bone graft fusion or replacement.Current large bone defect treatments are inadequate and lack of reliable technology.Therefore,we aimed to investigate a simple technique using three-dimensional(3D)-printed individualized porous implants without any bone grafts,osteoinductive agents,or surface biofunctionalization to treat large bone defects,and systematically study its long-term therapeutic effects and osseointegration characteristics.Twenty-six patients with large bone defects caused by tumor,infection,or trauma received treatment with individualized porous implants;among them,three typical cases underwent a detailed study.Additionally,a large segmental femur defect sheep model was used to study the osseointegration characteristics.Immediate and long-term biomechanical stability was achieved,and the animal study revealed that the bone grew into the pores with gradual remodeling,resulting in a long-term mechanically stable implant-bone complex.Advantages of 3D-printed microporous implants for the repair of bone defects included 1)that the stabilization devices were immediately designed and constructed to achieve early postoperative mobility,and 2)that osseointegration between the host bone and implants was achieved without bone grafting.Our osseointegration method,in which the“implant-bone”interface fusion concept was used instead of“bone-bone”fusion,subverts the traditional idea of osseointegration.Teng Zhang Qingguang Wei Hua Zhou Zehao Jing Xiaoguang Liu Yufeng Zheng Hong Cai Feng Wei Liang Jiang Miao Yu Yan Cheng Daoyang Fan Wenhao Zhou Xinhong Lin Huijie Leng Jian Li Xinyu Li Caimei Wang Yun Tian Zhongjun Liu 2021Bioactive Materials2021,6,11:9
17Comprehensive early warning of rock burst utilizing microseismic multi-parameter indices显示文摘Rock bursts have become one of the most severe risks in underground coal mining and its early warning is an important component in the safety management. Microseismic(MS) monitoring is considered potentially as a powerful tool for the early warning of rock burst. In this study, an MS multi-parameter index system was established and the critical values of each index were estimated based on the normalized multi-information warning model of coal-rock dynamic failure. This index system includes bursting strain energy(BSE) index, time-space-magnitude independent information(TSMII) indices and timespace-magnitude compound information(TSMCI) indices. On the basis of this multi-parameter index system, a comprehensive analysis was conducted via introducing the R-value scoring method to calculate the weights of each index. To calibrate the multi-parameter index system and the associated comprehensive analysis, the weights of each index were first confirmed using historical MS data occurred in LW402102 of Hujiahe Coal Mine(China) over a period of four months. This calibrated comprehensive analysis of MS multi-parameter index system was then applied to pre-warn the occurrence of a subsequent rock burst incident in LW 402103. The results demonstrate that this multi-parameter index system combined with the comprehensive analysis are capable of quantitatively pre-warning rock burst risk.Linming Dou Wu Cai Anye Cao Wenhao Guo 2018International Journal of Mining Science and Technology2018,28,5:9
18Combination method of conflict evidences based on evidence similarity显示文摘Aiming at the problem that the traditional DempsterShafer(D-S) evidence theory cannot deal with conflicted evidences effectively and correctly, this paper points out that the key issue of this problem is to measure the degree of conflict between evidences correctly after analyzing various improved methods. The existing evidence conflict measure methods are analyzed, and a new evidence conflict measure method called evidence similarity measure based on the Tanimoto measure is proposed, while a new evidence combination method is proposed on the basis of evidence similarity measure. Firstly, the conflict degrees between evidences are obtained through the evidence similarity measure. Then the evidence sources are modified based on the credibility of different evidences and the weights of conflicted parts of evidences on different focal elements are determined. Finally, the fusion result is obtained by this method. Numerical examples show that the proposed method can effectively fuse evidences when evidences are consistent or highly conflicted, and it has a fast convergence speed, a high degree of accuracy and good adaptability.Wenhao Bi An Zhang Yuan Yuan 2017Journal of Systems Engineering and Electronics2017,28,3:8
19The first dinosaur tracksite from Xinjiang, NW China (Middle Jurassic Sanjianfang Formation, Turpan Basin)──a preliminary report显示文摘A new dinosaur tracksite was discovered in a steeply inclined sandstone layer of the Middle Jurassic Sanjianfang Formation in the Shanshan area of the Turpan Basin. The site is the first record of dinosaur footprints from Xinjiang Province in northwestern China. More than 150 tridactyl theropod dinosaur footprints are preserved as positive hyporeliefs on the lower bedding plane of a fine-grained sandstone body. Most of the footprints are isolated and appear to be randomly distributed. Some show well defined phalangeal pads, heels and rarely indistinct impressions of the distal part of the metatarsus. Two distinct morphotypes are present: a larger type with relatively broad pads shows similarities to Changpeipus and Megalosauripus, and a slightly smaller, slender and gracile type which is similar to Grallator, Eubrontes and Anchisauripus. In both morphotypes, digit III is the longest with a length between 11.4 and 33.6 cm. A single imprint shows prominent scratches, probably formed during slipping of the track maker.Oliver WINCS Rico SCHELLHORN Heinrich MALLISON Ben THUY Wenhao WU Ge SUN 2007Global Geology2007,10,2:8
20An Incremental Algorithm to Feature Selection in Decision Systems with the Variation of Feature Set显示文摘Feature selection is a challenging problem in pattern recognition and machine learning. In real-life applications, feature set in the decision systems may vary over time. There are few studies on feature selection with the variation of feature set. This paper focuses on this issue, an incremental feature selection algorithm in dynamic decision systems is developed based on dependency function. The incremental algorithm avoids some recomputations, rather than retrain the dynamic decision system as new one to compute the feature subset from scratch. We firstly employ an incremental manner to update the new dependency function, then we incorporate the calculated dependency function into the incremental feature selection algorithm. Compared with the direct(non-incremental) algorithm, the computational efficiency of the proposed algorithm is improved. The experimental results on different data sets from UCI show that the proposed algorithm is effective and efficient.QIAN Wenbin SHU Wenhao YANG Bingru ZHANG Changsheng 2015Chinese Journal of Electronics2015,24,1:8
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