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| 1 | A mathematical model for concept granular computing systems显示文摘Extent-intent and intent-extent operators are introduced between two complete lattices in this paper and a mathematical model for concept granular computing system is established. We proved that the set of all concepts in this system is a lattice with the greatest element and the least element. This framework includes formal concept lattices from formal contexts, L fuzzy concept lattices from L fuzzy formal contexts and three kinds of variable threshold concept lattices, i.e. the extension and the intension of a concept are a crisp set and a crisp set, a crisp set and a fuzzy set, a fuzzy set and a crisp set, respectively. Finally, some iterative algorithms for constructing concepts are proposed and they are proved to be optimal concepts under some conditions in this system. | QIU GuoFang MA JianMin YANG HongZhi ZHANG WenXiua | 2010 | Science China(Information Sciences)2010，53，7： | 3 |
| 2 | A general approach to attribute reduction in rough set theory显示文摘The concept of a consistent approximation representation space is introduced. Many types of information systems can be treated and unified as consistent ap- proximation representation spaces. At the same time, under the framework of this space, the judgment theorem for determining consistent attribute set is established, from which we can obtain the approach to attribute reductions in information systems. Also, the characterizations of three important types of attribute sets (the core attribute set, the relative necessary attribute set and the unnecessary attribute set) are examined. | ZHANG WenXiu QIU GuoFang WU WeiZhi | 2007 | Science in China(Series F)2007，50，2： | 2 |
| 3 | Erythrocyte membrane-camouflaged nanoworms with on-demand antibiotic release for eradicating biofilms using near-infrared irradiation显示文摘The increase in the number of resistant bacteria caused by the abuse of antibiotics and the emergence of biofilms significantly reduce the effectiveness of antibiotics.Bacterial infections are detrimental to our life and health.To reduce the abuse of antibiotics and treat biofilm-related bacterial infections,a biomimetic nano-antibacterial system,RBCM-NW-G namely,that controls the release of antibiotics through near infrared was prepared.The hollow porous structure and the high surface activity of nanoworms are used to realize antibiotic loading,and then,biomimetics are applied with red blood cell membranes(RBCM).RBCM-NW-G,which retains the performance of RBCM,shows enhanced permeability and retention effects.Fluorescence imaging in mice showed the effective accumulation of RBCM-NW-G at the site of infection.In addition,the biomimetic nanoparticles showed a longer blood circulation time and good biocompatibility.Anti-biofilm test results showed damage to biofilms due to a photothermal effect and a highly efficient antibacterial performance under the synergy of the photothermal effect,silver iron,and antibiotics.Finally,by constructing a mouse infection model,the great potential of RBCM-NW-G in the treatment of in vivo infections was confirmed. | Luoxiao Ran Bitao Lu Haoyu Qiu Guofang Zhou Jing Jiang Enling Hu Fangyin Dai Guangqian Lan | 2021 | Bioactive Materials2021，6，9： | 1 |
| 4 | Uncertain Decision Making Based on Rough Sets显示文摘 | Zhang wenxiu Qiu Guofang | 2005 | Tsinghua University Press2005，，： | 1 |
| 5 | Pseudo-Channel Matrix Truncation Based Spatial Correlation Mitigation in Massive MIMO显示文摘Massive multiple-input multiple-output(MIMO),a technique that can greatly increase spectral efficiency(SE)of cellular networks,has attracted significant interests in recent years.One of the major limitations of massive MIMO systems is pilot contamination,which will deteriorate the SE.The superimposed pilot-based scheme has been proved to be a viable method for pilot contamination reduction.However,it cannot break through another limitation of massive MIMO,i.e.,spatial correlation.In addition,it will also lead to interference between the pilot and user data since they are imposed together.In this paper,we try to tackle these two issues,which will be described as follows.Firstly,a column-wise asymptotically orthogonal matrix,named as pseudo-channel matrix,is developed by orthogonalization of received signal.To recover the information about the large-scale fading(LSF)coefficients,the pseudo-channel matrix is truncated according to the cardinality of adjacent users set(CAUS).By this means,spatial correlation can be mitigated effectively.Secondly,robust independent component analysis(RobustICA)is used to reduce the interference caused by user data,and as a result the system performance can be further improved.Numerical simulation results demonstrate the effectiveness of the proposed method. | Yitian Chen Shaoshuai Gao Guofang Tu Hao Qiu | 2021 | China Communications2021，18，9： | 0 |
| 6 | COMPOSITION AND SPECTROSCOPIC STUDIES OF HYDRATED SODIUM ALUMINATE COMPOUNDS显示文摘COMPOSITIONANDSPECTROSCOPICSTUDIESOFHYDRATEDSODIUMALUMINATECOMPOUNDSQIUGuofang,DENGHongmei,ZENGWenmingandCHENHianyi(ShanghaiI... | QIU Guofang, DENG Hongmei, ZENG Wenming and CHEN Hianyi(Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050, China) | 1996 | Acta Metallurgica Sinica(English Letters)1996，9，3： | 0 |
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