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| 1 | Achieve Personalized Anonymity Through Query Blocks Exchanging显示文摘In cyberspace security,the privacy in location-based services(LBSs) becomes more critical. In previous solutions,a trusted third party(TTP) was usually employed to provide disturbance or obfuscation,but it may become the single point of failure or service bottleneck. In order to cope with this drawback,we focus on another important class,establishing anonymous group through short-range communication to achieve k-anonymity with collaborative users. Along with the analysis of existing algorithms,we found users in the group must share the same maximum anonymity degree,and they could not ease the process of preservation in a lower one. To cope with this problem,we proposed a random-QBE algorithm to put up with personalized anonymity in user collaboration algorithms,and this algorithm could preserve both query privacy and location privacy. Then we studied the attacks from passive and active adversaries and used entropy to measure user's privacy level. Finally,experimental evaluations further verify its effectiveness and efficiency. | Chunguang Ma Lei Zhang Songtao Yang Xiaodong Zheng Pinhui Ke | 2016 | China Communications2016，13，11： | 13 |
| 2 | Mutation of kri1l causes definitive hematopoiesis failure via PERK-dependent excessive autophagy induction显示文摘 | Xiao-E Jia Ke Ma Tao Xu Lei Gao Shuang Wu Cong Fu Wenjuan Zhang Zhizhang Wang Kaiyu Liu Mei Dong Changbin Jing Chunguang Ren Zhiwei Dong Yi Chen Yi Jin Qiuhua Huang Xing Chang Min Deng Li Li Lingfei Luo Jun Zhu Yongjun Dang Hung-Chun Chang Leonard I Zon Yi Zhou Saijuan Chen Weijun Pan | 2015 | Cell Research2015，25，8： | 8 |
| 3 | A Utility-Based Buffer Management Policy for Improving Data Dissemination in Opportunistic Networks显示文摘In opportunistic networks, most existing buffer management policies including scheduling and passive dropping policies are mainly for routing protocols. In this paper, we proposed a Utility-based Buffer Management strategy(UBM) for data dissemination in opportunistic networks. In UBM, we first design a method of computing the utility values of caching messages according to the interest of nodes and the delivery probability of messages, and then propose an overall buffer management policy based on the utility. UBM driven by receivers completely implements not only caching policies, passive and proactive dropping policies, but also scheduling policies of senders. Simulation results show that, compared with some classical dropping strategies, UBM can obtain higher delivery ratio and lower delay latency by using smaller network cost. | Jiansheng Yao Chunguang Ma Haitao Yu Yanling Liu Qi Yuan | 2017 | China Communications2017，14，7： | 5 |
| 4 | Theoretical investigation on structures,electronic spectra and nonlinear optical properties of gold compounds [X-{Au(PMe_3)}_2]显示文摘The structures,electronic spectra,polarizability and third-order nonlinear optical properties of six gold compounds [X-{Au(PMe3)}2]were investigated by density functional theory(DFT)B3LYP and BhandHLYP methods.It was found that the calculation methods and basis set are rational for the object of study,and molecular structures change slightly when PPh3 is replaced by PMe3.The spatial effects of the bridging section have a significant influence on the polarizability,but indistinctive to the third-order nonlinear optical(NLO)coefficient.As a result of the conjugated effect in different compounds,the third-order polarizability of molecule 1a is the smallest,while that of molecule 2a is the largest.Au has donor ability in molecule 1a but acceptor ability in molecules 2a-6a by analyzing the electronic spectra and frontier molecular orbitals constitute maximal absorption,which indicates the contribution of Au to NLO properties in the six molecules is different. | MA NaNa,QIU YongQing,SUN ShiLing,LIU ChunGuang,FAN Min & SU ZhongMin Institute of Functional Material Chemistry,Faculty of Chemistry,Northeast Normal University,Changchun 130024,China | 2010 | Science China Chemistry2010，53，5： | 3 |
| 5 | Targeted thrombolysis strategies for neuroprotective effect显示文摘Stroke is usually treated by systemic thrombolytic therapy if the patient presents within an appropriate time window. There is also widespread interest in the development of thrombolytic agents that can be used in cases of delayed presentation. Current agents that can be used in cases of delayed presentation of nerve damage by thrombus. Current systemic thrombolytic therapy is associated with adverse effects such as fibrinogenolysis and bleeding. In an attempt to increase the efficacy, safety, and specificity of thrombolytic therapy, a number of targeted thrombolytic agents have been studied in recent years. This review focuses on the concepts underlying targeted thrombolytic therapy and describes recent drug developments in this field. | Junping Zhang Guoxing Ma Zhimin Lv Yu Zhou Chunguang Wen Yaqing Wu Ruian Xu | 2014 | Neural Regeneration Research2014，9，13： | 2 |
| 6 | Simultaneous, hybrid single-molecule method by optical tweezers and fluorescence显示文摘As studies on life sciences progress toward the single-molecule level,new experiments have put forward more requirements for simultaneously displaying the mechanical properties and conformational changes of biomolecules.Optical tweezers and fluorescence microscopy have been combined to solve this problem.The combination of instruments forms a new generation of hybrid single-molecule technology that breaks through the limitations of traditional biochemical analysis.Powerfulmanipulation and fluorescence visualization have beenwidely used,and these techniques provide new possibilities for studying complex biochemical reactions at the singlemolecule level.This paper explains the features of this combined technique,including the application characteristics of single-trap and dual-traps,the anti-bleaching method,and optical tweezers combined with epifluorescence,confocal fluorescence,total internal reflection fluorescence,and other fluorescence methods.Using typical experiments,we analyze technical solutions and explain the factors and principles that instrument designers should consider.This review aims to give an introduction to this novel fusion technology process and describe important biological results. | Guoteng Ma Chunguang Hu Shuai Li Xiaoqin Gao Hongbin Li Xiaotang Hu | 2019 | Nanotechnology and Precision Engineering2019，2，4： | 1 |
| 7 | Industrial practice of clad-rolling in heavy steel plate production显示文摘In this paper,a brief introduction on clad-rolling heavy steel plates of 90 mm and 140 mm thick is presented.The steel plates were hot rolled by 265mm slabs that are cladded by double 135mm continuous casting slabs of Q235 steel.After hot rolling,interface of the cladding slabs completely disappeared, revealing uniform grains similar to the rest of the materials.Ultrasonic tests were carried out on both steel plates,demonstrating excellent results.Through thickness tensile tests were also implemented on both steel plates,resulting in perfect mechanical properties complying with specific standards.The result proves that a minimum reduction rate of 1.89 is available in producing 140 mm thick steel plate with excellent through thickness properties. | SUN Weihua~(1)),MA Xingyun~(1)),ZHAO Qian~(1)),MENG Chunguang~(1)), CHEN Qixiang~(1)),LUO Zongan~(2)) and WANG Guodong~(2)) 1) Technology Centre,Jigang Group Co.,Ltd.,Jinan 250101,Shandong,China 2) RAL,North Eastern University,Shenyang 110006,Liaoning,China | 2010 | Baosteel Technical Research2010，4，S1： | 1 |
| 8 | Multi-key FHE for multi-bit messages显示文摘Dear editor,A fully homomorphic encryption(FHE)allows us to perform any complex computation on encrypted data without decryption.Since the breakthrough by Gentry[1],researchers have made significant efforts to improve the construction of the FHE schemes.More specifically,because of well-understood assumptions such as | Zengpeng LI Chunguang MA Hongsheng ZHOU | 2018 | Science China(Information Sciences)2018，61，2： | 1 |
| 9 | A new route for preparation of hydrochars from rice husk显示文摘 | Lili Wang Yupeng Guo Yanchao Zhu Ying Li Yuning Qu Chunguang Rong Xiaoyu Ma Zichen Wang | 2010 | Bioresource Technology2010，，24： | 1 |
| 10 | A voronoi- based location privacy-preserving method for continuous query in LBS显示文摘 | Chunguang Ma Changli Zhou and Songtao Yang | 2015 | International Journal of Distributed Sensor Networks2015，2015，： | 1 |
| 11 | A Random Anonymity Framework for Location Privacy显示文摘Location k-anonymity techniques typically use anonymous spatial region to ensure privacy. But these solutions are vulnerable to multiple queries attacks and inference attacks. Failing to account for the obstacle in geographic space is a severe problem since adversaries will surely regard these constraints. A novel framework is proposed to enhance location-dependent queries, based on the theoretical work of k-anonymity and Voronoi diagrams, allows a user to express service requirement and privacy requirement by specifying a region and an appropriate value of k. A trusted anonymity server form a restricted set(k, r, s), which is composed of a number of discrete points to meet the requirements for location k-anonymity and location l-diversity. The location-based services(LBS) server implements an efficient algorithm for continuous-region-query processing. Simulation results demonstrated that the framework is superior to previous works in terms of privacy. Moreover, discreteness and randomness of the anonymous set are conducive to resisting location tracking attacks. | YANG Songtao YIN Guisheng MA Chunguang | 2015 | Wuhan University Journal of Natural Sciences2015，20，6： | 1 |
| 12 | A sur- vey of ring signature 显示文摘 | WANG LINGLING ZHANG GUOYIN MA CHUNGUANG | 2008 | Frontiers of Electrical and Electronic En- gineering in China2008，3，1： | 1 |
| 13 | Ciphertext-policy attribute-based proxy re-encryption via constrained PRFs显示文摘Dear editor,To maintain the confidentiality of the sensitive data,users tend to encrypt their data under an associated access policy(or attributes)before outsourcing them to the cloud.In the traditional access control model via cryptographic approaches,e.g.,ciphertext-policy attribute-based encryption(or CP-ABE),users are allowed to formulate access policies and let the encrypted data associated with access policies.Only authenticated users,whose own attributes matching their formulated access policies,have the privilege to recover the ciphertext.However,once the access policies are formulated,the authorized user cannot update it unless the user downloads and re-encrypts the file under the new access policy.Hence,to achieve dynamic access control,the model of ciphertext-policy attribute-based proxy re-encryption(or CP-AB-PRE)is adopted by integrating the proxy re-encryption(or PRE). | Zengpeng LI Vishal SHARMA Chunguang MA Chunpeng GE Willy SUSILO | 2021 | Science China(Information Sciences)2021，64，6： | 0 |
| 14 | Dimensional reduction enhances photocatalytic carbon dioxide reduction performance of metal-organic frameworks显示文摘Metal-organic frameworks(MOFs)have shown significant potential as photocatalysts.It has been widely assumed that all catalytic active sites within MOFs are functional in photocatalytic reactions but for a three-dimensional MOF,whether the internal catalytic active sites can effectively absorb light and actively contribute to photocatalytic reactions remains to be explored.In this context,we synthesized a two-dimensional nanosheet MOF(2D-MOF)and a three-dimensional bulk MOF(3D-MOF)composed of Zr^(6) clusters and tetracarboxylic porphyrin(TCPP)by the approach described in the literature.Re(bpy)(CO)^(3)Cl(bpy=2,2’-bipyridine),which has remarkable CO_(2) photoreduction ability,was introduced to the two MOFs to create two new photocatalysts 2D-MOF-Re and 3D-MOF-Re,respectively.Photocatalytic CO_(2) reduction experiments show that based on the equal number of catalytic active sites,the CO turnover number(TON)of 2D-MOF-Re reaches 27.8 in 6 h,which is 50 times that of 3D-MOF-Re.The result shows that certain catalytic active sites inside the bulk MOF are inactive due to the inability to absorb light.This study illuminates the potential of the dimensional reduction approach in the design of photocatalysts to exploit the capabilities fully. | Kaiyue Ma Jixin Li Jinlu Liu Chunguang Li Zhan Shi Shouhua Feng | 2024 | Nano Research2024，17，5： | 0 |
| 15 | Privacy-Preserving Decision Protocols Based on Quantum Oblivious Key Distribution显示文摘Oblivious key transfer(OKT)is a fundamental problem in the field of secure multi-party computation.It makes the provider send a secret key sequence to the user obliviously,i.e.,the user may only get almost one bit key in the sequence which is unknown to the provider.Recently,a number of works have sought to establish the corresponding quantum oblivious key transfer model and rename it as quantum oblivious key distribution(QOKD)from the well-known expression of quantum key distribution(QKD).In this paper,a new QOKD model is firstly proposed for the provider and user with limited quantum capabilities,where both of them just perform computational basis measurement for single photons.Then we show that the privacy for both of them can be protected,since the probability of getting other’s raw-key bits without being detected is exponentially small.Furthermore,we give the solutions to some special decision problems such as set-member decision and point-inclusion by announcing the improved shifting strategies followed QOKD.Finally,the further discussions and applications of our ideas have been presented. | Kejia Zhang Chunguang Ma Zhiwei Sun Xue Zhang Baomin Zhou Yukun Wang | 2020 | Computers, Materials & Continua2020，，9： | 0 |
| 16 | Optimizing Utility of Cognitive Radio Ad Hoc Networks under the Energy and Retransmission Constraint显示文摘 | FENG Guangsheng ZHAO Qian WANG Huiqiang LV Hongwu Lin JUNYU MA Chunguang | 2014 | China Communications2014，11，A01： | 0 |
| 17 | Attribute-Based Authenticated Group Key Management Protocol for Mobile Peer-to-Peer Network显示文摘The authentication and privacy of a group member is important in multicast communication. This paper proposes a privacy-preserving authenticated group-key management protocol for the Mobile Peer-to-Peer Network (MP2PN). The MP2PN contains some super peers and each super peer controls a subgroup composed of regular peers. An efficient attribute-based signature based on Cipertext-Policy Attribute-Based Encryption (CP-ABE) is proposed and used in this group-key management protocol to authenticate a peer's attributes and identity. A peer can be described by a set of attributes or one unique special identity attribute. Peers that have some attributes in common can form a group and communicate with each other anonymously and securely. Any super peer can initiate a group and act as a group controller. The group controller can authenticate a peer's attributes and identity as well as remove malicious peers. Any peer with attributes that matches the access structure can join the group and provide its input to form the group key. The proposed protocol provides backward and forward secrecy. The simulation results show that this protocol is applicable for mobile devices and can meet the MP2PN requirements of group communication. | Zhang Guoyin Fu Xiaojing Ma Chunguang | 2012 | China Communications2012，9，10： | 0 |
| 18 | Fine-Grained Access Control for Big Data Based on CP-ABE in Cloud Computing显示文摘In Cloud Computing, the application software and the databases are moved to large centralized data centers, where the management of the data and services may not be fully trustworthy. This unique paradigm brings many new security challenges, which have not been well solved. Data access control is an effective way to ensure the big data security in the cloud. In this paper,we study the problem of fine-grained data access control in cloud computing.Based on CP-ABE scheme,we propose a novel access control policy to achieve fine-grainedness and implement the operation of user revocation effectively.The analysis results indicate that our scheme ensures the data security in cloud computing and reduces the cost of the data owner significantly. | Qi Yuan Chunguang Ma Junyu Lin | 2015 | 国际计算机前沿大会会议论文集2015，，1： | 0 |
| 19 | An Improved Fine-Grained Encryption Method for Unstructured Big Data显示文摘In the big data protecting technologies, most of the existing data protections adopt entire encryption that leads to the researches of lightweight encryption algorithms, without considering from the protected data itself. In our previous paper (FGEM), it finds that not all the parts of a data need protections,the entire data protection can be supplanted as long as the critical parts of the structured data are protected. Reducing unnecessary encryption makes great sense for raising efficiency in big data processing. In this paper, the improvement of FGEM makes it suitable to protect semi-structured and unstructured data efficiently. By storing semi-structured and unstructured datum in an improved tree structure, the improved FGEM for the datum is achieved by getting congener nodes. The experiments show the improved FGEM has short operating time and low memory consumption. | Changli Zhou Chunguang Ma Songtao Yang | 2015 | 国际计算机前沿大会会议论文集2015，，1： | 0 |
| 20 | Enhanced monopole transition strength from the cluster decay of ^(13)C显示文摘The inelastic excitations and cluster decay of ^(13)C have been measured using the reaction,9Be(^(13)C, ^(13)C* →~9Be + α)~9Be. We observe strong excitation to the 14.3-MeV(1/2-) resonant state from the cluster-decay channel, leading to an enhanced monopole matrix element of(6.3 ± 0.6) fm^2. This large cluster-related monopole strength is a clear indication of the cluster-structure domination of this state and is consistent with the recent prediction of the orthogonality condition model(OCM). It would be interesting to further explore the three-center molecular rotational band that is initiated from the observed band-head. | Jun Feng YanLin Ye Biao Yang ChengJian Lin HuiMin Jia DanYang Pang ZhiHuan Li JianLing Lou QiTe Li XiaoFei Yang Jing Li HongLiang Zang Qiang Liu Wei Jiang ChenGuang Li Yang Liu ZhiQiang Chen HongYi Wu ChunGuang Wang Wei Liu Xiang Wang JingJing Li DiWen Luo Ying Jiang ShiWei Bai JinYan Xu NanRu Ma LiJie Sun DongXi Wang | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，1： | 0 |
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