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| 1 | A Survey of Bitmap Index Compression Algorithms for Big Data显示文摘With the growing popularity of Internet applications and the widespread use of mobile Internet, Internet traffic has maintained rapid growth over the past two decades. Internet Traffic Archival Systems(ITAS) for packets or flow records have become more and more widely used in network monitoring, network troubleshooting, and user behavior and experience analysis. Among the three key technologies in ITAS, we focus on bitmap index compression algorithm and give a detailed survey in this paper. The current state-of-the-art bitmap index encoding schemes include: BBC, WAH, PLWAH, EWAH, PWAH, CONCISE, COMPAX, VLC, DF-WAH, and VAL-WAH. Based on differences in segmentation, chunking, merge compress, and Near Identical(NI) features, we provide a thorough categorization of the state-of-the-art bitmap index compression algorithms. We also propose some new bitmap index encoding algorithms, such as SECOMPAX, ICX, MASC, and PLWAH+, and present the state diagrams for their encoding algorithms. We then evaluate their CPU and GPU implementations with a real Internet trace from CAIDA. Finally, we summarize and discuss the future direction of bitmap index compression algorithms. Beyond the application in network security and network forensic, bitmap index compression with faster bitwise-logical operations and reduced search space is widely used in analysis in genome data, geographical information system, graph databases, image retrieval, Internet of things, etc. It is expected that bitmap index compression will thrive and be prosperous again in Big Data era since 1980s. | Zhen Chen Yuhao Wen Junwei Cao Wenxun Zheng Jiahui Chang Yinjun Wu Ge Ma Mourad Hakmaoui Guodong Peng | 2015 | Tsinghua Science and Technology2015，20，1： | 5 |
| 2 | Aeroacoustic and aerodynamic optimization of propeller blades显示文摘It is of great significance to develop a high-efficiency and low-noise propeller optimization method for new-generation propeller aircraft design.Coupled with free form deformation method,dynamic mesh interpolation technology,optimization algorithm,surrogate model,aerodynamic calculation and aeroacoustic prediction model module,the integrated aerodynamic and aeroacoustic design method of propeller is built.The optimization design for the six-blade propeller is carried out.The non-reduction in efficiency,thrust coefficient and the minimum of aerodynamic noise is treated as the optimization design objective.The spatial vorticity distribution of the propeller before and after the design is also analyzed by using unsteady computational fluid dynamics method.The results show that the optimized propeller can effectively reduce the aerodynamic noise level.The maximum total sound pressure level can be reduced by 5 dB without reducing its aerodynamic performance.The developed method has good application potential in low-noise optimization design of propeller and other rotating machinery. | Peixun YU Jiahui PENG Junqiang BAI Xiao HAN Xiang SONG | 2020 | Chinese Journal of Aeronautics2020，33，3： | 4 |
| 3 | Oxygen vacancies enriched nickel cobalt based nanoflower cathodes: Mechanism and application of the enhanced energy storage显示文摘The rational design of oxygen vacancies and electronic microstructures of electrode materials for energy storage devices still remains a challenge. Herein, we synthesize nickel cobalt-based oxides nanoflower arrays assembled with nanowires grown on Ni foam via the hydrothermal process followed annealing process in air and argon atmospheres respectively. It is found that the annealing atmosphere has a vital influence on the oxygen vacancies and electronic microstructures of resulting NiCo_(2)O_(4) (NCO-Air) and CoNiO_(2) (NCO-Ar) products, which NCO-Ar has more oxygen vacancies and larger specific surface area of 163.48 m^(2)/g. The density functional theory calculation reveals that more oxygen vacancies can provide more electrons to adsorb –OH free anions resulting in superior electrochemical energy storage performance. Therefore, the assembled asymmetric supercapacitor of NCO-Ar//active carbon delivers an excellent energy density of 112.52 Wh/kg at a power density of 558.73 W/kg and the fabricated NCO-Ar//Zn battery presents the specific capacity of 180.20 mAh/g and energy density of 308.14 Wh/kg. The experimental measurement and theoretical calculation not only provide a facile strategy to construct flower-like mesoporous architectures with massive oxygen vacancies, but also demonstrate that NCO-Ar is an ideal electrode material for the next generation of energy storage devices. | Jiahui Ye Xingwu Zhai Long Chen Wen Guo Tiantian Gu Yulin Shi Juan Hou Fei Han Yi Liu Changchun Fan Gang Wang Shanglong Peng Xuhong Guo | 2021 | Journal of Energy Chemistry2021，30，11： | 2 |
| 4 | 显示文摘 | Chen Mingfeng Wang Chunyang Peng Jiahui | 2003 | Construction Technology2003，32，4： | 1 |
| 5 | Ad- water-reducing agents on gypsum surface and its effect on the rheology of gyp- sum plaster 显示文摘 | Peng Jiahui Qu Jindong sorption characteristics of Zhang Jianxin | 2005 | Cement and Concrete Research2005，35，3： | 1 |
| 6 | Orally administered BZL-s RNA-20 oligonucleotide targeting TLR4 effectively ameliorates acute lung injury in mice显示文摘The global COVID-19 pandemic emerged at the end of December 2019.Acute respiratory distress syndrome(ARDS)and acute lung injury(ALI)are common lethal outcomes of bacterial lipopolysaccharide(LPS),avian influenza virus,and SARS-Co V-2.Toll-like receptor 4(TLR4)is a key target in the pathological pathway of ARDS and ALI.Previous studies have reported that herbal small RNAs(s RNAs)are a functional medical component.BZL-s RNA-20(Accession number:B59471456;Family ID:F2201.Q001979.B11)is a potent inhibitor of Toll-like receptor 4(TLR4)and pro-inflammatory cytokines.Furthermore,BZLs RNA-20 reduces intracellular levels of cytokines induced by lipoteichoic acid(LTA)and polyinosinic-polycytidylic acid(poly(I:C)).We found that BZL-s RNA-20 rescued the viability of cells infected with avian influenza H5N1,SARS-Co V-2,and several of its variants of concern(VOCs).Acute lung injury induced by LPS and SARS-Co V-2 in mice was significantly ameliorated by the oral medical decoctosome mimic(bencaosome;sphinganine(d22:0)+BZL-s RNA-20).Our findings suggest that BZLs RNA-20 could be a pan-anti-ARDS/ALI drug. | Dandan Zhao Yuhao Qin Jiaqi Liu Kegong Tang Shuaiyao Lu Zirui Liu Yexuan Lin Cong Zhang Fengming Huang Jiahui Chang Chang Li Mingyao Tian Yiming Ma Xiaoyun Li Congzhao Zhou Xiao Li Xiaozhong Peng Ningyi Jin Chengyu Jiang | 2023 | Science China(Life Sciences)2023，66，7： | 1 |
| 7 | Adsorption characteristics of water-reducing agents on gypsum surface and its effect on the rheology of gypsum plaster显示文摘 | Jiahui Peng Jindong QuJianxin Zhang | 2005 | Cement and Concrete Research2005，，35： | 1 |
| 8 | Adsorption characteristics of water-reducing agents on gypsum surface and its effect on the theology of gypsum plaster 显示文摘 | PENG Jiahui QU Jindong ZHANG Jianxin | 2005 | Cem Concr Res2005，35，： | 1 |
| 9 | Adsorption characteristics of water-reducing agents on gypsum surface and its effect on the rheology of gypsum plaster显示文摘 | Peng Jiahui Qu Jindong Zhang Jianxin Chen Mingfeng Wan Tizhi | 2005 | Cement and Concrete Research2005，35，： | 1 |
| 10 | Application of three‐dimensional reconstruction and visible simulation technique in reoperation of hepatolithiasis显示文摘 | Aowen Xie Chihua Fang Yanpeng Huang Yinfang Fan Jiahui Pan Fengping Peng | 2013 | J Gastroenterol Hepatol2013，，2： | 1 |
| 11 | Adsorption characteristics of water-reducing agents on gypsum surface and its effect on the rheology of gypsum plaster 显示文摘 | Peng Jiahui Qu Jindong Zhang Jianxin | 2005 | Cement and Concrete Research2005，35，3： | 1 |
| 12 | Adsorption characteristics of water-reducing agents on gypsum surface and its effect on the rheology of gypsum plaster 显示文摘 | JIAHUI PENG JINDONG QU JIANXIN ZHANG | 2005 | Cement and Concrete Research2005，35，： | 1 |
| 13 | Adsorption characteris- tics of water-reducing agents on gypsum surface and its effect on the rheology of gypsum plaster显示文摘 | JiaHui Peng JinDong Qu JianXin Zhang | 2005 | Cement and Concrete Research2005，35，： | 1 |
| 14 | A Hollow Polyethylene Fiber-Based Artificial Muscle显示文摘Recently,researches on artificial muscles for imitating the functions of the natural muscles has attracted wide attention.The fiber-shape actuators,shape-memory materials or deforming devices,which are similar to human muscle fiber bundles,have extensively studied and provided more possibilities for artificial muscles.Herein,we develop a thermal responsible fiber-shaped actuator based on the low-cost hollow polyethylene fiber.The sheath-core structured fibrous actuators and the stainless-steel conductive yarn winded pre-stretched polyethylene actuators are fabricated with the heating assisted pre-stretching procedure.The actuation mechanism of the thermal-responsive orientation change of molecular chains driving the actuation is discussed and demonstrated by 2D XRD patterns.These polyethylene-based fibrous actuators displayed three significant advantages including(i)color-turning and shape-changing bifunctional response,(ii)direct joule heating actuation and(iii)effective contraction(18%shrinkage of the pristine length)and lifting ability(the ratio of lifting weight to self-weight is up to 50). | Peng Gao Jiahui Li Qiuwei Shi | 2019 | Advanced Fiber Materials2019，1，3： | 1 |
| 15 | Adsorption characteristics of water-reducing agents on gypsum surface and its effect on the rheology of gypsum plaster 显示文摘 | Peng Jiahui Qu Jindong Zhang Jianxin | 2005 | Cement and Concrete Research2005，35，3： | 1 |
| 16 | Effect of cavity-triggering sequence on output parameters of LTD-based driver显示文摘 | Liu Peng Sun Fengju Yin Jiahui | 2011 | IEEE Trans on Plasma Sci2011，39，5： | 1 |
| 17 | Adsorption characteristics of water- reducing agents on gypsum surface and its effect on the rheology of gypsum plaster显示文摘 | Jiahui Peng Jindong Qu Jiangxin Zhang | 2005 | Cement and Concrete Research2005，35，： | 1 |
| 18 | RNF126 Quenches RNF168 Function in the DNA Damage Response显示文摘DNA damage response(DDR) is essential for maintaining genome stability and protecting cells from tumorigenesis. Ubiquitin and ubiquitin-like modi?cations play an important role in DDR, from signaling DNA damage to mediating DNA repair. In this report, we found that the E3 ligase ring ?nger protein 126(RNF126) was recruited to UV laser micro-irradiation-induced stripes in a RNF8-dependent manner. RNF126 directly interacted with and ubiquitinated another E3 ligase, RNF168. Overexpression of wild type RNF126, but not catalytically-inactive mutant RNF126(CC229/232 AA), diminished ubiquitination of H2 A histone family member X(H2AX),and subsequent bleomycin-induced focus formation of total ubiquitin FK2, TP53-binding protein1(53 BP1), and receptor-associated protein 80(RAP80). Interestingly, both RNF126 overexpression and RNF126 downregulation compromised homologous recombination(HR)-mediated repair of DNA double-strand breaks(DSBs). Taken together, our ?ndings demonstrate that RNF126 negatively regulates RNF168 function in DDR and its appropriate cellular expression levels are essential for HR-mediated DSB repair. | Lianzhong Zhang Zhenzhen Wang Ruifeng Shi Xuefei Zhu Jiahui Zhou Bin Peng Xingzhi Xu | 2018 | Genomics, Proteomics & Bioinformatics2018，16，6： | 1 |
| 19 | Effect of cavity-triggering sequences on output parameters of LTD-based drivers显示文摘 | Liu Peng Sun Fengju Yin Jiahui | 2011 | IEEE Trans on Plasma Sci2011，39，5： | 1 |
| 20 | Adsorption characteristics of water-reducing agents on gypsum surface and its effect on the rheology of gypsum plaster 显示文摘 | Peng Jiahui Qu Jindong Zhang Jianxin | 2005 | Cement and Concrete Research2005，35，3： | 1 |
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