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Distributed scheduling based on polling policy with maximal spatial reuse in multi-hop WMNs

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The Journal of China Universities of Posts and Telecommunications 2007年第3期14卷 22-27页

作者： wang Kun PENG mu-gen wang Wen-bo Wireless Signal Processing and Network Laboratory Beijing University of Posts and Telecommunications Beijing 100876 China

The scheduling algorithm based on the three-way handshaking scheme in IEEE 802.16d-2004 standard has some serious problems because of the complexity of the algorithm and low scheduling efficiency. To enhance the scheduling efficiency and improve the performance of multi-hop wireless mesh networks （WMNs）, one distributed scheduling algorithm that can maximize the spatial and time reuse with an interference-based network model is proposed. Compared to the graph-based network model, the proposed network model can achieve a better throughput performance with maximal spatial reuse. Furthermore, this proposed scheduling algorithm also keeps fairly scheduling to all links, with a priority-based polling policy. Both the theoretical analysis and simulation results show that this proposed distributed scheduling algorithm is simple and efficient.

关键词： WMNs distributed scheduling algorithm spatial reuse polling policy

High performance liquid chromatographic separation of clausenamide enantiomers with chiral-AGP stationary phase

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Chinese Chemical Letters 2010年第7期21卷 860-863页

作者： Yan wang Qing Qiang Yao mu Zou wang Institute of Materia Medica Chinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing 100050China Institute of Materia Medica Shandong Academy of Medical ScienceJinan 250062China

A method of high performance liquid chromatographic separation of clausenamide enantiomers with chiral-AGP（α_1-acid glycoprotein） stationary phases has been *** absolute configurations of（-）clausenamide and（＋）clausenamide are 3S, 4R,5R,6S and 3R,4S,5S,6R,*** present method has been used to analyze the（-）clausenamide and（＋）clausenamide and its analogues such as the major metabolite and synthetic derivatives of clausenamide.

关键词： Enantiomers (-)Clausenamide (+)Clausenamide Chiral-AGP HPLC

Video streaming distribution over mobile Internet:a survey

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Frontiers of Computer Science 2018年第6期12卷 1039-1059页

作者： mu wang Changqiao XU Shijie JIA Gabriel-Miro muNTEAN State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China Academy of Information Technology Luoyang Normal UniversityLuoyang 471934China Performance Engineering Laboratory Network Innovations CentreRince InstituteSchool of Electronic EngineeringDublin City UniversityDublin 9Ireland

In recent times, mobile Internet has witnessed the explosive growth of video applications, embracing user-generated content, Internet Protocol television (IPTV), live streaming, video-on-demand, video conferencing, and FaceTime-like video communications. The exponential rise of video traffic and dynamic user behaviors have proved to be a major challenge to video resource sharing and delivery in the mobile environment. In this article, we present a survey of state-of-the-art video distribution solutions over the Internet. We first discuss the challenges of mobile peer-to-peer (MP2P)-based solutions and categorize them into two groups. We discuss the design idea, characteristics, and drawbacks of solutions in each group. We also give a review for solutions of video transmission in wireless heterogeneous networks. Furthermore, we summarize the information-centric networking (ICN)-based video solutions in terms of in-network caching and name-based routing. Finally, we outline the open issues for mobile video systems that require further studies.

关键词： video streaming content distribution resource management mobile Internet

A novel adaptive modulation and coding strategy based on partial feedback for enhanced MBMS network

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The Journal of China Universities of Posts and Telecommunications 2008年第1期15卷 48-54页

作者： SHENG Yu PENG mu-gen wang Wen-bo School of Telecommunications Engineering Beijing University of Posts and Telecommunications Beijing 100876 China

The difference in link condition of broadcast/ multicast users and the limitation of uplink resource, make it difficult to utilize adaptive modulation and coding （AMC） in the enhanced multimedia broadcast and multicast service （E-MBMS） network. To obtain the improvement of system throughput, this study proposes an adaptive modulation and coding scheme based on partial feedback, by which only partial users whose channel qualities are lower than the system threshold need to make a response to the modulation coding scheme （MCS） adaptation procedure. By this investigation, an adaptive scheme can be introduced in the E-MBMS network. Both the theoretical analysis and simulation results demonstrate the efficiency of the proposed strategy, in which the performance is close to the ideal one and has a significant throughput improvement when compared with that of the fixed MCS transmission scheme.

关键词： E-MBMS partial feedback AMC system throughput

Ultra-broadband reflectionless Brewster absorber protected by reciprocity

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Light(Science & Applications) 2021年第5期10卷 931-940页

作者： Jie Luo Hongchen Chu Ruwen Peng mu wang Jensen Li Yun Lai School of Physical Science and Technology Soochow UniversitySuzhou215006China National Laboratory of Solid State Microstructures School of Physicsand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China Department of Physics The Hong Kong University of Science and TechnologyClear Water BayHong KongChina William Mong Institute of Nano Science and Technology The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina

The Brewster’s law predicts zero reflection of p-polarization on a dielectric surface at a particular ***,when loss is introduced into the permittivity of the dielectric,the Brewster condition breaks down and reflection unavoidably *** this work,we found an exception to this long-standing dilemma by creating a class of nonmagnetic anisotropic metamaterials,where anomalous Brewster effects with independently tunable absorption and refraction *** loss-independent Brewster effect is bestowed by the extra degrees of freedoms introduced by anisotropy and strictly protected by the reciprocity *** bandwidth can cover an extremely wide spectrum from dc to optical *** examples of reflectionless Brewster absorbers with different Brewster angles are both demonstrated to achieve large absorbance in a wide spectrum via microwave *** work extends the scope of Brewster effect to the horizon of nonmagnetic absorptive materials,which promises an unprecedented wide bandwidth for reflectionless absorption with high efficiency.

关键词： polarization absorber dielectric

Ubiquitin-conjugating enzyme E2T knockdown suppresses hepatocellular tumorigenesis via inducing cell cycle arrest and apoptosis

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World Journal of Gastroenterology 2019年第43期25卷 6386-6403页

作者： Jian Guo mu wang Jun-Ping wang Chang-Xin Wu Institute of Biotechnology Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of EducationInstitute of BiotechnologyShanxi UniversityTaiyuan 030006Shanxi ProvinceChina Department of General Surgery Shanxi Provincial People’s Hospitalthe Affiliated People’s Hospital of Shanxi Medical UniversityTaiyuan 030012Shanxi ProvinceChina Department of Neurology Shanxi Provincial People’s Hospitalthe Affiliated People’s Hospital of Shanxi Medical UniversityTaiyuan 030012Shanxi ProvinceChina Department of Gastroenterology Shanxi Provincial People’s Hospitalthe Affiliated People’s Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina The Institutes of Biomedical Sciences Shanxi UniversityTaiyuan 03006Shanxi ProvinceChina Key Laboratory of Molecular Biology and Biochemistry of Ministry of Education Shanxi UniversityTaiyuan 030006Shanxi ProvinceChina

BACKGROUND Hepatocellular carcinoma(HCC)is now the most common primary liver malignancy worldwide,and multiple risk factors attribute to the occurrence and development of ***,increasing studies suggest that ubiquitinconjugating enzyme E2T(UBE2T)serves as a promising prognostic factor in human cancers,although the molecular mechanism of UBE2T in HCC remains *** To investigate the clinical relevance and role of UBE2T in HCC *** UBE2T expression in HCC tissues from the TCGA database and its association with patient survival were analyzed.A lentivirus-mediated strategy was used to knock down UBE2T in HCC ***-PCR and Western blot assays were performed to check the effect of UBE2T silencing in HCC *** growth in vitro and in vivo was analyzed by multiparametric high-content screening and the xenograft tumorigenicity assay,*** cycle distribution and apoptosis were determined by flow *** genes regulated by UBE2T were profiled by microarray *** UBE2T was overexpressed in HCC tissues compared with paired and non-paired normal *** expression of UBE2T predicted a poor overall survival in HCC *** vitro,lentivirus-mediated UBE2T knockdown significantly reduced the viability of both SMMC-7721 and BEL-7404 *** vivo,the xenograft tumorigenesis of SMMC-7721 cells was largely attenuated by UBE2T *** cell cycle was arrested at G1/S phase in SMMC-7721 and BEL-7404 cells with UBE2T ***,apoptosis was increased by UBE2T *** the molecular level,numerous genes were dysregulated after UBE2T silencing,including IL-1B,FOSL1,PTGS2,and *** UBE2T plays an important role in cell cycle progression,apoptosis,and HCC development.

关键词： Hepatocellular carcinoma Ubiquitin-conjugating enzyme E2T Cell cycle Apoptosis Tumorigenesis

An Efficient Certificateless Aggregate Signature Scheme

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Wuhan University Journal of Natural Sciences 2017年第2期22卷 165-170页

作者： KANG Baoyuan wang mu JING Dongya School of Computer Science and Software Tianjin Polytechnic University Tianjin 300387 China

Aggregate signature can aggregate n signatures on n messages from n signers into a single signature that convinces any verifier that n signers sign the n messages, respectively. In this paper, by combining certificateless public key cryptography and aggregate signatures, we propose an efficient certificateless aggregate signature scheme and prove its security. The new scheme is proved secure against the two representative types adversaries in certificateless aggregate signature under the assumption that computational Diffie-Hellman problem is hard. Furthermore, from the comparison of the computation cost of the new scheme with some existing certificateless aggregate signature schemes in group sum computation, scalar multiplication computation, Hash computation and abilinear pairings computation, it concludes that the new scheme reduces the computation cost in scalar multiplication computation in half and maintains the same in the other computation costs.

关键词： digital signature aggregate signature certificateless aggregate signature security bilinear maps

Making structured metals transparent for broadband electromagnetic waves

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Science China(Information Sciences) 2013年第12期56卷 43-51页

作者： MENG Chong PENG RuWen FAN RenHao HUANG XianRong wang mu National Laboratory of Solid State Microstructures and Department of Physics Nanjing University Advanced Photon Source Argonne National Laboratory Argonne Illinois 60439 USA

In this review,we present our recent work on making structured metals transparent for broadband electromagnetic waves by surface plasmons(SPs)or spoof surface plasmons(SSPs).First,we demonstrate that the interference between the localized and propagating SPs plays an important role in the optical transmission through arrays of sub-wavelength *** observed phenomena belong to the category of plasmonic Fano ***,we show that the transmission enhancement originates not only from the coupling between the incident light and the excited SPs but also from the coupling among these SPs in multiple nano-aperture ***,we demonstrate that metallic plates with narrow slit arrays can become transparent within extremely broad spectral bandwidths,and high transmission efciency is insensitive to the thickness of the *** phenomenon explicitly demonstrates the conversion between light and *** investigations provide guidelines to develop many novel materials and devices,such as transparent conducting panels,antireflective solar cells,and other broadband metamaterials.

关键词： transparent metal structures broadband transmission surface plasmons

Cloning and characterization of the gene encoding an ubiquitin-activating enzyme E1 domain-containing protein of silkworm, Bombyx moil

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Insect Science 2010年第2期17卷 75-83页

作者： Ping Wu mu-wang Li Yun-Feng Jiang Zi-Sheng wang Xi-Jie Guo Sericultural Research Institute Chinese Academy of Agricultural Sciences College of Biotechnology and Environmental Engineering Jiangsu University of Science and Technology Zhenjiang Jiangsu Province China

Bombyx mori cytoplasmic polyhedrosis virus （BmCPV） is one of the major viral pathogens for the silkworm. To date, the molecular mechanism of BmCPV invasion has been unclear. We cloned the full length complementary （c）DNA which encodes the ubiquitin-activating enzyme El-domain containing proteinl （UbE1DC1） ofBombyx mori by using suppression subtraefive hybridization （SSH） and rapid amplification of com- plementary （c）DNA ends （RACE）. The full-length eDNA of UbE1DClgene is 1 919 bp, consisting of a 100 bp 5＇ untranslated region, a 637 bp 3＇ untranslated region and an 1 182 bp open reading frame （ORF）, encoding a 393 amino acid protein. The protein contained the THiF_MoeB_hesA_family domain, an adenosine triphosphate binding site, which belongs to the family of ubiquitin-activating enzyme El. Reverse transcription - polymerase chain reaction analysis from the silkworm tissues, namely silk gland, hemo- cyte, fat body, gonad and midgut revealed that UbE1DC1 was expressed in all the five tissues. The real-time quantitative polymerase chain reaction analysis indicated that the relative expression of UbE1DC1 in the normal midgut was approximately 9.78-fold of that in the BmCPV-infected midgut. It is implicated that UbEIDCI may play an important role in the interaction between the host and BmCPV invasion.

关键词： Bombyx mori Cytoplasmic polyhedrosis virus midgut quantitative real-time PCR rapid amplification of eDNA ends suppression subtractive hybridization