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| 1 | Error analysis and calibration for underwater sound intensity measuring system显示文摘Based on measuring the cross-spectrum density of sound pressure between two hydrophones, the facility for underwater sound intensity measurement is investigated and designed. According to the principle of two-hydrophone method for intensity measurement, the error analysis is carried out. Given the method of sound intensity measurement calibration for this underwater sound intensity measurement facility, the uncertainty of intensity measurement by this facility is evaluated. It is shown that the analysis and evaluation are agreeable to the experimental results. | HE Zuoyong HE Yuanan SHANG Dejiang (Institute of Underwater Acoustics, Harbin Engineering University Harbin 150001) | 2000 | Chinese Journal of Acoustics2000,19,3: | 6 |
| 2 | Rapid growth of a long-seed KDP crystal显示文摘To reduce the seed length while maintaining the advantages of the cuboid KDP-type crystal,a long-seed KDP crystal with size 471 mm×480 mm×400 mm is rapidly grown.With almost the same high cutting efficiency to obtain third harmonic generation oriented samples,this long-seed KDP-type crystal can be grown with a shorter seed than that of the cuboid KDP-type crystal.The full width at half maximum of the high-resolution X-ray diffraction of the(200)crystalline face is 28.8 arc seconds,indicating that the long-seed KDP crystal has good crystalline quality.In the wavelength range of 377–1022 nm,the transmittance of the long-seed KDP crystal is higher than 90%.The fluence for the 50%probability of laser-induced damage(LID)is 18.5 J/cm^2(3 ns,355 nm).Several test points survive when the laser fluence exceeds 30 J/cm^2(3 ns,355 nm),indicating the good LID performance of the long-seed KDP crystal.At present,the growth of a long-seed DKDP crystal is under way. | Duanyang Chen Bin Wang Hu Wang Xiangyu Zhu Ziyuan Xu Yuanan Zhao Shenghao Wang Kaizao Ni Lili Zheng Hui Zhang Hongji Qi Jianda Shao | 2020 | High Power Laser Science and Engineering2020,8,1: | 5 |
| 3 | Robust multiuser MIMO scheduling algorithms with imperfect CSI显示文摘Robust multiuser multiple-input-multiple-output (MIMO) scheduling algorithms are proposed in this paper.With imperfect channel state information (CSI),traditional scheduling algorithms for the multiuser MIMO system based on the zero forcing precoding scheme will lose some performance due to the multi-user interference (MUI).In order to improve the system average throughput,we study the robust multiuser MIMO scheduling problem with imperfect CSI.From the average capacity formula,we derive a robust factor which can transform the robust multiuser MIMO scheduling problem into the traditional one,thus most existing non-robust scheduling algorithms can be robust if this factor is adopted.Simulation results show that compared with the traditional algorithms,the proposed robust algorithms can improve the system average throughput significantly under the CSI error environment. | MAO JunLing GAO JinChun LIU YuanAn XIE Gang ZHANG Jian | 2012 | Science China(Information Sciences)2012,55,4: | 4 |
| 4 | Novel PAPR Reduction Scheme Based on Continuous Nonlinear Piecewise Companding Transform for OFDM Systems显示文摘In this paper,a novel efficient continuous piecewise nonlinear companding scheme is proposed for reducing the peak-to-average power ratio(PAPR)of orthogonal frequency division multiplexing(OFDM)systems.In the proposed companding transform,signal samples with large amplitudes is clipped for peak power reduction,and the signal samples with medium amplitudes is nonlinear transformed with power compensation.While the signal samples with small amplitudes remain unchanged.The whole companding function is continuous and smooth in the range of positive numbers,which is beneficial for guaranteeing the bit error rate(BER)and power spectral density(PSD)performance.This scheme can achieve a significant reduction in PAPR.And at the same time,it cause little increment in BER and PSD performance.Simulation results indicate the superiority of the proposed scheme over existing companding schemes. | Zhitong Xing Kaiming Liu Kaiyuan Huang Bihua Tang Yuanan Liu | 2020 | China Communications2020,17,9: | 4 |
| 5 | The Art of Power Dividing:A Review for State-of-the-Art Planar Power Dividers显示文摘In this paper,massive state-of-theart planar power dividers are presented and discussed. The innovations of these superiorly-performanced power dividers lie in the performance breakthrough,physical configurations and function integrations. Eventually,based on the trend presented,the future of the power dividers is predicted. This paper might have inspiration significance to illuminate the way for the development of power dividers. | Yongle Wu Lingxiao Jiao Zheng Zhuang Yuanan Liu | 2017 | China Communications2017,14,5: | 4 |
| 6 | 南昌市部分公务员对空气质量及其改善措施的认知调查显示文摘目的了解南昌市某区公务员对空气质量及其改善措施的认知情况。方法于2015年4月对南昌市某区300名公务员进行问卷调查,内容包括人口学特征、对当地环境状况的感知、空气质量对健康的影响及对改善空气质量相关举措的看法。结果有效问卷共261份,回收率为87.0%。其中有65.9%(172/261)认为当地空气质量与5年前相比更差,有77.4%(202/261)认识到空气质量与人群健康相关,有49.4%(129/261)表示非常担心或比较担心目前的空气污染会对其呼吸系统健康产生负面影响;有70.9%(185/261)认为当地政府投入改善空气质量的资源不够,仅5.0%(13/261)不支持政府投入更多资源以改善空气质量,有67.4%(176/261)的公务员认同改善空气质量是每个人的责任,但仅有42.5%(111/261)表示愿意额外缴税来改善空气质量。单因素和多因素logistic回归均显示,女性公务员的支付意愿低于男性,年龄在30~49岁的公务员比年轻公务员的支付意愿更低,家庭人均年收入≥25 000元的公务员支付意愿更高,差异均有统计学意义(P〈0.05)。结论大部分参与调查的公务员认为当地空气质量欠佳,支持政府加大力度改善空气质量;但受性别、年龄、家庭收入的影响,愿意缴税以改善空气质量的人群比例不高。 | 刘晓君 袁兆康 胡永新 Jay E.Maddock Yuanan Lu 陈英 | 2015 | 环境与健康杂志2015,32,10: | 3 |
| 7 | Optimal resource allocation for transmission diversity in multi-radio access networks:a coevolutionary genetic algorithm approach显示文摘The next generation wireless communication systems aim at supporting enhanced diversified network access and data transmission abilities via the cooperative integration and unified management of various radio access technologies(RATs).The resource allocation is the core component leading the network system and mobile terminals to the service robustness and performance maximization.In this paper,a numeric optimization model for optimizing terminals’transmission power and allocated RAT bandwidth for maximizing system capacity is proposed with the focal consideration of the multi-radio transmission diversity for parallel transmission through multiple links from diferent RATs,and diferent terminal characteristics on RAT supports.Also,we design a centralized and periodic scheduling algorithm including an improved coevolutionary genetic algorithm for efciently solving the optimization problem.Simulation results demonstrate that our propose algorithm can distinctly enhance the system performance and improve the computational efciency. | FAN WenHao LIU YuanAn WU Fan | 2014 | Science China(Information Sciences)2014,57,2: | 3 |
| 8 | Dual-Band Coupled-Line Bandpass Filter with Independently Tunable Bandwidths显示文摘This paper reports a novel dual-band coupled-line bandpass filter.Comprising a quadruple-mode coupled-line resonator,this proposed filter could filter signals on two frequency bands.After introducing two varactors,one of the four resonances could be continuously altered by changing the capacitance of the varactors,thus the two frequency bandwidths could be independently tunned.In this paper,the detailed explanation for its operation is given,and the agreement between the expected and practical performance sufficiently confirms the robustness and effectiveness of this proposed filter. | Yongle Wu Lixia Nan Lingxiao Jiao Weimin Wang Yuanan Liu | 2016 | China Communications2016,13,9: | 3 |
| 9 | Lead (Pb) isotopic fingerprinting and its applications in lead pollution studies in China: A review显示文摘 | Hefa Cheng Yuanan Hu | 2009 | Environmental Pollution2009,,5: | 3 |
| 10 | 南昌市某企业工人对空气质量及其改善措施认知调查显示文摘目的了解江西省南昌市某工厂工人对空气质量及其改善措施的认知情况。方法采用分层整群抽样方法,在2015年4月抽取南昌市某厂421名工人进行问卷调查。结果 54.2%(228/421)工人认为当地空气质量差或很差,约80%(333/421)认为空气质量与5年前相比差一些或差很多;认为对当地空气影响最大的3项污染源为机动车(60.1%,253人)、废物燃烧(54.2%,228人)和工业设施(53.9%,227人);89.3%(376/421)认为当地政府投入保护环境卫生的资源不太够或太少;认为当地政府应采取的3项最重要措施分别为控制生产污染的工业设施(54.9%,231人)、增加公共运输工具并减少私家车(54.6%,230人)和减少垃圾焚烧(49.2%,207人)。≥50岁、大专或大学及以上、国内外旅游经历、过敏、哮喘和上呼吸道感染者均为当地主要污染源认知情况的影响因素。结论工人对当地的空气质量认知度较高。 | 潘冰冰 袁兆康 林菲 Yuanan Lu 陈英 | 2017 | 中国公共卫生2017,33,1: | 2 |
| 11 | Principles to tailor the saturable and reverse saturable absorption of epsilon-near-zero material显示文摘Indium tin oxide(ITO) films have recently emerged as a new class of functional materials for nonlinear optical(NLO) devices due to their exotic properties around epsilon-near-zero(ENZ) wavelength. Here, we experimentally investigated and tailored the NLO absorption properties of ITO films. The NLO absorption response of ITO films is investigated by using the femtosecond Z-scan measurement technique at two different wavelengths of 1030 nm(out of ENZ region) and 1440 nm(within ENZ region). Interestingly, we observed conversion behavior from saturable absorption(SA) to reverse saturable absorption(RSA) at 1030 nm with the increasing incident laser intensity, whereas only SA behavior was observed at 1440 nm. We demonstrate that SA behavior was ascribed to ground-state free electrons bleaching in the conduction band, and RSA was attributed to three-photon absorption. Moreover, results reveal that ITO film shows more excellent SA performance at 1440 nm with a nonlinear absorption coefficient of ~-23.2 cm∕GW and a figure of merit of ~1.22 × 10^(-16) esu · cm.Furthermore, we tailored the SA and RSA behaviors of ITO films at 1030 and 1440 nm wavelengths via post-annealing treatment. The modulatable NLO absorption was ascribed to the changing of free-carrier concentration in ITO films via annealing treatment. The experimental findings offered an inroad for researchers to tailor its NLO absorption properties by changing the free-carrier concentration through chemical modification such as annealing, oxidation, or defect implantation. The superior and tunable nonlinear optical response suggests that ITO film might be employed as a new class material with potential applications in novel optical switches or optical limiters to realize the all-optical information process. | HAO MA YUANAN ZHAO YUCHEN SHAO YAFEI LIAN WEILI ZHANG GUOHANG HU YUXIN LENG JIANDA SHAO | 2021 | Photonics Research2021,9,5: | 2 |
| 12 | 斑点叉尾鮰病毒对几种淡水鱼类细胞系感染性的初步研究显示文摘研究斑点叉尾鮰病毒(Channel Catfish Virus,CCV)是否感染斑点叉尾鮰以外的鱼类,以评价CCV对我国珍稀、重要经济鱼类的潜在危害性。选择大眼鲑、草鱼、鲤、白鲟的细胞系为材料,从细胞病变、病毒增殖滴度等方面验证CCV对这些细胞系的感染性。实验表明,CCV对上述细胞系均可以感染,但细胞病变出现时间、病变程度和增殖滴度各有差异。其中,草鱼鳍条细胞系(GCF)、鲤上皮瘤细胞系(EPC)对CCV高度敏感。CCV在EPC中的增殖滴度与在斑点叉尾鮰卵巢细胞系(CCO)中相当,在GCF中的增殖滴度甚至高于CCO。研究结果表明,CCV除了感染CCO以外,还可以感染其它多种鱼类的细胞系,说明CCV病毒可能对斑点叉尾鮰以外的淡水鱼类具有感染性和潜在的危害性。 | 刘学芹 王敏 王卫民 Yuanan Lu | 2009 | 水生态学杂志2009,2,6: | 2 |
| 13 | ENERGY-EFFICIENT MICROWAVE COMPONENTS FOR MOBILE COMMUNICATION显示文摘In the coexisted world of 3G,4G,5G and many other specialized wireless communication systems,billions of connections could be existing for various information transmission types.Unluckily,data show that the increase of network capacity is heavily more than the increase of the network energy efficiency in recent years,which could lead to more energy consumption per transmitted bit in the future network.As basic units in mobile communication systems,microwave/RF components and modules play key roles | Yuanan Liu Quanyuan Feng Fadhel M. Ghannouchi | 2017 | China Communications2017,14,2: | 2 |
| 14 | Variation of the band structure in DKDP crystal excited by intense sub-picosecond laser pulses显示文摘The nonlinear absorption(NLA) properties of potassium dideuterium phosphate crystals at 515 nm under different excitation laser intensities are investigated with the Z-scan technique. Two critical intensities are highlighted: the critical intensity for exciting the NLA and the critical intensity of the multiphoton absorption mechanism transition.Experimental results indicate the existence of defect states located in the band gap, which can be manipulated by varying laser intensity. A model based on the change of multiphoton absorption mechanism induced by the transformation of defect species is proposed to interpret the experiments. Modeling results are in good agreement with the experiment data. | Xiaocong Peng Yuanan Zhao Yueliang Wang Zhen Cao Guohang Hu Jianda Shao | 2018 | High Power Laser Science and Engineering2018,6,3: | 2 |
| 15 | Bacterial pathogens in Hawaiian coastal streams—Associations with fecal indicators, land cover, and water quality显示文摘 | Emily J. Viau Kelly D. Goodwin Kevan M. Yamahara Blythe A. Layton Lauren M. Sassoubre Siobhán L. Burns Hsin-I Tong Simon H.C. Wong Yuanan Lu Alexandria B. Boehm | 2011 | Water Research2011,,11: | 2 |
| 16 | HIV-1缺损慢病毒载体的高滴度制备及其介导的高效基因转移显示文摘近来,慢病毒载体引起了极大关注,己成为转基因操作中重要的工具。用编码病毒组份的三质粒系统共转染293T包装细胞系,建立了大量制备HIV-1缺损慢病毒载体的方法,病毒载体的度可达到1.1×107IU/mL,离心浓缩可将载体滴度提高100倍以上。HIV-1缺损慢病毒载体可以高效转导人淋巴瘤等多种来源的细胞,RT-PCR检测显示外源基因GFP稳定表达达18个月以上,长期传代观测未检出p24抗原蛋白或可复制病毒。 | 曾令兵 张林 孟彦 Yuanan Lu 叶林柏 | 2007 | 微生物学报2007,47,6: | 1 |
| 17 | On the direct path problem of s-elementary frame wavelets显示文摘In this paper, we discuss the path-connectivity between two s-elementary normalized tight frame wavelets via the so-called direct paths. We show that the existence of such a direct path is equivalent to the non-existence of an atom of a σ-algebra defined over the defining sets of the corresponding frame wavelets, using a mapping defined by the natural translation and dilation operations between the sets. In particular, this gives an equivalent condition for the existence of a direct path between two s-elementary wavelets. | DAI XingDe 1 , DIAO YuanAn 1 & GUO XunXiang 2,1 Department of Mathematics and Statistics, University of North Carolina at Charlotte, Charlotte, NC 28223, USA 2 Department of Mathematics, Southwestern University of Finance and Economics, Chengdu 611130, China | 2010 | Science China Mathematics2010,53,12: | 1 |
| 18 | Meeting China' s water shortage crisis:current practices and challenges 显示文摘 | Cheng Hefa Hu Yuanan Zhao Jianfu | 2009 | Environ Sci Technol2009,43,2: | 1 |
| 19 | Sort-based relay selection algorithm for decode-and-forward relay system显示文摘In this paper, a sort-based relay selection algorithm is proposed for decode-and-forward wireless relay systems. The proposed algorithm can reduce computational complexity and system overhead in the relay selection for practical decode-and-forward wireless relay systems with multiple sources and multiple relays. This would be a very important improvement. Firstly, the sufficient and necessary conditions for a relay to be feasible to a source are derived. By adopting relay transmission via its feasible relay, the source can improve channel capacity compared to direct transmission. Then, a sort-based relay selection algorithm is proposed based on the sufficient and necessary conditions. In the proposed algorithm, each relay makes decision on its feasibility individually, but the final source-relay paring decision is made in a centralized manner. Simulation results show that the proposed algorithm can provide considerable system performance improvement over the existing algorithm. Especially at low signal-to-noise (SNR) region, the performance of the proposed algorithm almost reaches the optimal one. | XIE Gang LIU YuanAn GAO JinChun LI XingZheng | 2013 | Science China(Information Sciences)2013,56,2: | 1 |
| 20 | Lead (Pb) isotopic fingerprinting and its applications in lead pollution studies in China: a review 显示文摘 | CHENG Hefa HU Yuanan | 2010 | Environmental Pollution2010,158,5: | 1 |