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| 1 | Wireless Communications with Programmable Metasurface:Transceiver Design and Experimental Results显示文摘Metasurfaces have drawn significant attentions due to their superior capability in tailoring electromagnetic waves with a wide frequency range, from microwave to visible light. Recently, programmable metasurfaces have demonstrated the ability of manipulating the amplitude or phase of electromagnetic waves in a programmable manner in real time, which renders them especially appealing in the applications of wireless communications. In this paper, we present the fundamental principle of applying programmable metasurface as transmitter for wireless communications. Then, we establish a prototype system of metasurface-based transmitter to conduct several experiments and measurements over the air, which practically demonstrate the feasibility of using programmable metasurfaces in future communication systems. By exploiting the dynamically controllable property of programmable metasurface, the design, implementation and experimental evaluation of the proposed metasurface-based wireless communication system are presented with the prototype, which realizes single carrier quadrature phase shift keying(QPSK) transmission over the air. In the developed prototype, the phase of the reflected electromagnetic wave of programma-ble metasurface is directly manipulated in real time according to the baseband control signal, which achieves 2.048 Mbps data transfer rate with video streaming transmission over the air. In addition, experimental result is provided to compare the performance of the proposed metasurface-based architecture against the conventional one. With the slight increase of the transmit power by 5 dB, the same bit error rate(BER) performance can be achieved as the conventional system in the absence of channel coding. Such a result is encouraging considering that the metasurface-based system has the advantages of low hardware cost and simple structure, thus leading to a promising new architecture for wireless communications. | Wankai Tang Xiang Li Jun Yan Dai Shi Jin Yong Zeng Qiang Cheng Tie Jun Cui | 2019 | China Communications2019，16，5： | 23 |
| 2 | Prototype for 5G New Air Interface Technology SCMA and Performance Evaluation显示文摘Sparse code multiple access(SCMA) is a novel non-orthogonal multiple access scheme proposed to meet the challenging demand of the future 5G communications, especially in support of the massive connections. The coded bits from each data stream will be directly mapped as multi-dimensional SCMA codeword in complex domain and then spread onto the physical resource elements in a sparse manner. The number of codewords that can be nonorthogonally multiplexed in one SCMA block can be made much larger than the number of orthogonal resource elements therein, resulting in an overloaded system. The sparsity in the spreading pattern and the design in the multidimensional modulator jointly ensure the SCMA codewords can be robustly decoded with low complexity. In this paper, we focus on the low complexity receiver design and verified the superior of an SCMA system via simulations and real-time prototyping. Lab tests and field tests all show that SCMA is a promising candidate for 5G non-orthogonal multiple access which can provide up to 300% overloading that triples the whole system throughput while still enjoying the link performance close to orthogonal transmissions. | LU Lei CHEN Yan GUO Wenting YANG Huilian WU Yiqun XING Shuangshuang | 2015 | China Communications2015，12，S1： | 15 |
| 3 | Slice Data Based Support Generation Algorithm for Fused Deposition Modeling显示文摘This paper presents a robust algorithm to generate support for fused deposition modeling (FDM). Since many flaws appear in most stereo lithography (STL) models, this algorithm utilizes slice data as input. A top-down approach was used to calculate the support slice layer by layer. The generation algorithm was described in detail including the slice grouping, oriental bounding box (OBB) calculation, offsetting, and Boolean operations. Several cases are given to validate the efficiency and robustness of the procedure. The algorithm provides necessary support not only for hanging surface but also for hanging vertexes and edges with O(n) time complexity, where n is the number of layers. The algorithm fully utilizes the parts' self-support ability and reduces support volume to the maximum extent. This slice data based algorithm has the same efficiency as the STL based algorithm but is more stable, which significantly enhances the robustness of the support generation process. | 黄小毛 叶春生 莫健华 刘海涛 | 2009 | Tsinghua Science and Technology2009，14，S1： | 10 |
| 4 | On grammatical categories显示文摘A central claim of Cognitive Grammar is that basic grammatical categories,such as noun and verb,have conceptual characterizations valid for all members.The standard argument against this position is invalid.The proposed characterizations rely only on basic cognitive abilities that are clearly evident on non-linguistic grounds.Responses are made to arguments against the proposal as well as to putative alternatives.It is shown in specific detail how the characterization offered for nouns applies to a broad range of cases. | R.W.Langacker | 2013 | 外文研究2013，1，4： | 8 |
| 5 | Brief Introduction of TianHe Exascale Prototype System显示文摘Facing the challenges of the next generation exascale computing,National University of Defense Technology has developed a prototype system to explore opportunities,solutions,and limits toward the next generation Tianhe system.This paper briefly introduces the prototype system,which is deployed at the National Supercomputer Center in Tianjin and has a theoretical peak performance of 3.15 Pflops.A total of 512 compute nodes are found where each node has three proprietary CPUs called Matrix-2000+.The system memory is 98.3 TB,and the storage is 1.4 PB in total. | Ruibo Wang Kai Lu Juan Chen Wenzhe Zhang Jinwen Li Yuan Yuan Pingjing Lu Libo Huang Shengguo Li Xiaokang Fan | 2021 | Tsinghua Science and Technology2021，26，3： | 5 |
| 6 | Geochemical Constraints of Sediments on the Provenance, Depositional Environment and Tectonic Setting of the Songliao Prototype Basin显示文摘The geochemistry of sediments is primarily controlled by their provenances, and different tectonic settingshave distinctive provenance characteristics and sedimentary processes. So, it is possible to discriminate provenances,depositional environments and tectonic settings in the development of a sedimentary basin with the geochemistry of theclastic rocks. The analytical results of the present paper demonstrate that sediments in the Songliao prototype basin areenriched in silica (SiO2=66.48-80.51%), and their ΣREE are 30-130 times of that of chondrite with remarkable Euanomalies. In discriminating diagrams of Eu/Eu* vs ΣREE and (La/Yb)N vs ΣREE, most samples locate above the line Eu/Eu*=1, on the right of the line Eu/Eu*/ΣREE=1 and under the line La/Yb)N/ΣREE=1/8, which indicates that thedepositional environment of sediments in the basin was oxidizing. In addition, variations of MgO, TiO2, A12O3,FeO+Fe2O3, Na2O and CaO vs SiO2 reflect a tendency of increasing mineral maturity of sediments in the basin. Analysesalso show that the protolytes of the sediments in the basin were felsic igneous rocks, and the Songliao prototype basin wasin a tectonic setting of an island arc on an active continental margin, with violent sinistral strike-slip. | 阎全人 高山林 王宗起 李继亮 肖文交 侯泉林 阎臻 陈海泓 | 2002 | Acta Geologica Sinica(English Edition)2002，76，4： | 5 |
| 7 | An Integrated Decision Support System for Macroscopic Coordinative Development | LIU Shaojun HAN Chongzhao and WAN BaiwuInstitute of Systems Engineering, Xi’an Jiaotong UniversityXi’an 710049, P.R.China | 1993 | Systems Science and Systems Engineering1993，3，4： | 3 |
| 8 | 基于Ajax on Rails的WebGIS应用显示文摘运用目前两种炙手可热的Web开发技术:AJAX和Ruby on Rails为WebGIS提供一个新的解决方案,AJAX技术作为一种新兴的网络技术比传统页面刷新模式具有更好的性能和友好的用户体验,不过在建立大量的Javascript的代码基础上的,本文通过对AJAX on Rails原理进行分析,运用Ruby on Rails的动态性和敏捷性使AJAX模式带来的程序量大、首页加载时间长的缺陷得到改善,进一步提高程序性能。在实现环节上,在该平台上结合使用Google Maps API,以GXmlHttp在Rails上实现了AJAX的WebGIS关键应用。 | 唐旭华 邹峥嵘 | 2009 | 北京测绘2009，23，2： | 2 |
| 9 | Conceptual design of irradiation device for silicon neutron transmutation doping around Es-Salam research reactor显示文摘Silicon neutron transmutation doping remains one of the most viable nuclear applications for research reactors.Providing this kind of product involves an irradiation method capable of fulfilling the quality requirements of doping and alleviating the challenges related to the design and safety of the irradiation device.In this paper,we propose an irradiation device prototype for neutron transmutation doping of silicon ingots with diameters of 2 to 3 in.based on the Es-Salam research reactor.The thermal hydraulic analysis of the proposed irradiation device was performed to determine the optimum conditions for cooling.The effect of the mechanical vibrations induced by the circulation of coolant in the device was quantified via experimental measurements under different flow rates.The results show that the maximum temperature reached by the silicon ingots is below the temperature limit,effectively validating the design of the irradiation device.Other investigations are prospected to further optimize the design and the irradiation conditions.The irradiation of silicon ingots with a large diameter will be considered. | M.Salhi B.Mohammedi S.Laouar M.Dougdag M.Touiza M.Abbaci M.Moughari | 2020 | Nuclear Science and Techniques2020，31，4： | 2 |
| 10 | Material Base of in vivo Invigorating Qi and Enriching Blood of Bazhen Decoction by HPLC-ESI-MS显示文摘Objective To identify the in vivo metabolized chemical constituents in Bazhen Decoction(BZD) and to study the relationship between Siwu Decoction(SWD) and Sijunzi Decoction(SJZD) with BZD.Methods Analysis and comparison were carried out by HPLC-ESI-MS.Serum samples after ig administration of preparations such as SWD,SJZD,and BZD,with different ingredients were collected for analysis.Results Twenty-two components were detected after ig administration of BZD,and six of them were metabolites and others were original form of the components contained in BZD.The prototype constituents were atractylenolide I,5-hydroxymethyl-furoic acid(5-HMFA),oxypaeoniflorin,atractylenolide III,albiflorin,paeoniflorin,liquiritin,ferulic acid,ligustilide,and ginsenosides Rg1 and Rb1.The metabolized constituents were paeonimetabolin I,glycyrrhetic acid monoglucuronide,glycyrrhetinic acid,and ginsenosides Rh1 and Rd.Conclusion The results also show that 5-HMFA,oxypaeoniflorin,albiflorin,paeoniflorin,ferulic acid,and ligustilide are common components absorbed into blood existing in both BZD and SWD,which are material base of enriching blood;Atractylenolide I,atractylenolide III,and liquiritin are common ingredients absorbed into blood existing in both BZD and SJZD,and they are material base of invigorating Qi.The results provide basic data for the further studies on the effective components,the effecting mechanism,and the quality control of BZD. | Wen-lan LI Jing BAI Zhi SUN Juan DU Yu-bin JI | 2012 | Chinese Herbal Medicines2012，4，4： | 2 |
| 11 | Topology optimization of a 6-DOF spatial compliant mechanism based on Stewart propotype platform显示文摘To improve the global stiffness and conveniently build a model of a compliant mechanism with spatial multiple degrees of freedom(DOF),the topology optimization method,combined with the isomorphic mapping matrix,is proposed in this paper for structure synthesis of a 6-DOF spatial compliant mechanism.By using the differential approximation method,the Jacobian matrix of the Stewart prototype platform is calculated as the isomorphic mapping matrix,and its eigenvalues and eigenvectors are considered.Combining the isomorphic mapping matrix with the solid isotropic material with the penalization topology optimization method,the topological model of the 6-DOF spatial compliant mechanism is constructed,and a topological structure of the 6-DOF spatial compliant mechanism is derived which has the same differential kinematic characteristics as the Gough-Stewart prototype platform.Piezoelectric actuators are mounted inside the topological structure during the three-dimensional printing manufacturing process,and its driver directions are in accordance with the driver configuration directions of the Gough-Stewart prototype platform.The effectiveness of the proposed method for topological structure synthesis of the 6-DOF spatial compliant mechanism is demonstrated through several numerical examples and experimental studies. | Dachang Zhu Wanghu Zhan | 2019 | Acta Mechanica Sinica2019，35，5： | 2 |
| 12 | Current Model Analysis of South China Sea Based on Empirical Orthogonal Function(EOF) Decomposition and Prototype Monitoring Data显示文摘Environmental load is the primary factor in the design of offshore engineering structures and ocean current is the principal environmental load that causes underwater structural failure. In computational analysis, the calculation of current load is mainly based on the current profile. The current profile model, which is based on a structural failure criterion, is conducive to decreasing the uncertainty of the current load. In this study, we used prototype monitoring data and the empirical orthogonal function(EOF) method to investigate the current profile in the South China Sea and its correlation with the design of underwater structural strength and the dynamic design of fatigue. The underwater structural strength design takes into account the size of the structure and the service water depth. We propose profiles for the overall and local designs using the inverse first-order reliability method(IFORM). We extracted the characteristic profile current(CPC) of the monitored sea area to solve dynamic design problems such as vortex-induced vibration(VIV). We used random sampling to verify the feasibility of using the EOF method to calculate the CPC from the current data and identified the main problems associated with using the CPC, which deserve close attention in VIV design. Our research conclusions provide direct references for determining current load in this sea area. This analysis method can also be used in the analysis of other sea areas or field variables. | WU Wenhua LIU Ming YU Siyuan WANG Yanlin | 2019 | Journal of Ocean University of China2019，18，2： | 2 |
| 13 | 基于Struts+Ajax的学位论文管理与服务系统的设计和实现显示文摘基于Struts+Ajax的学位论文管理与服务系统是集论文提交、管理、OAI服务为一体的系统,能满足大多数高校对学位论文的处理要求。系统在技术实现上采用Struts开发模式,同时结合目前广泛应用的Ajax开发框架——Prototype。结合Struts和Prototype来阐述基于Struts+Ajax的学位论文管理与服务系统的实现。 | 崔盟 马自卫 | 2007 | 现代图书情报技术2007，，11： | 2 |
| 14 | 用Ajax技术开发购物车显示文摘本文将Ajax技术运用到电子商务网站的购物车系统设计中,介绍了Ajax的技术基础,及其如何利用开源类库简化开发基于Ajax的应用程序。 | 徐翔斌 | 2007 | 电脑编程技巧与维护2007，，11： | 1 |
| 15 | Prototype提供的Ajax功能在ThinkPHP框架中的应用研究显示文摘研究web开发中Prototype目前最为广泛的Ajax功能,在ThinkPHP框架中的应用。以合作管理系统为例,展示Prototype中的Ajax功能在ThinkPHP的应用。 | 张洪波 杨新泉 | 2011 | 硅谷2011，4，7： | 1 |
| 16 | Lnc-RP5 Regulates the mi R-129-5p/Notch1/PFV Internal Promoter Axis to Promote the Expression of the Prototype Foamy Virus Transactivator Tas显示文摘Prototype foamy virus(PFV)is a unique retrovirus that infects animals and humans and does not cause clinical symptoms.Long noncoding RNAs(lncRNAs)are believed to exert multiple regulatory functions during viral infections.Previously,we utilized RNA sequencing(RNA-seq)to characterize and identify the lncRNA lnc-RP5-1086 D14.3.1-1:1(lnc-RP5),which is markedly decreased in PFV-infected cells.However,little is known about the function of lnc-RP5 during PFV infection.In this study,we identified lnc-RP5 as a regulator of the PFV transcriptional transactivator(Tas).Lnc-RP5 enhanced the activity of the PFV internal promoter(IP).The expression of PFV Tas was found to be promoted by lnc-RP5.Moreover,mi R-129-5 p was found to be involved in the lnc-RP5-mediated promotion of PFV IP activity,while the Notch1 protein suppressed the activity of PFV IP and the expression of Tas.Our results demonstrate that lnc-RP5 promotes the expression of PFV Tas through the miR-129-5 p/Notch1/PFV IP axis.This work provides evidence that host lnc RNAs can manipulate PFV replication by employing mi RNAs and proteins during an early viral infection. | Shanshan Xu Liujun Chen Yinglian Tang Peipei Yuan Jun Yan Yingcheng Zheng Li Huang Zhi Li Yan Sun Song Han Jun Yin Qin Pan Biwen Peng Xiaohua He Wanhong Liu | 2020 | Virologica Sinica2020，35，1： | 1 |
| 17 | Research of Spatial Construction Strategy in Chinese New Rural Community显示文摘Through the field survey of traditional rural settlement,it has found that the typical spatial construction model shows the duality of matrix and landmark and they are in a relation of reciprocal causality.However,under the impact of urbanization and modernization,this spatial construction model is disappearing,and those natural villages are integrated and reconstructed at a high speed and in a large scale during the construction of new rural communities,leading to a lack of geographical construction system and a damage of ecological living environment.In the perspective of prototype theory,the duality feature should be combined with spatial construction model to guide the inheritance and application of spatial construction model of traditional rural settlements and seek for new spatial development approach for new rural communities based on the sustainable,alternative and transformation strategies. | WANG Jiang1,2,YANG Ning3,QIU Shouliang4(1.School of Architecture and Urban Planning,Shandong Jianzhu University,Jinan,Shandong 250101,China 2.Key Laboratory of the Ministry of Education for Renewable Resources Building Use Technology,Shandong Jianzhu University,Jinan,Shandong,250101,China 3.Flower Seedlings Development Center of Jinan City,Jinan,Shandong 250002,China 4.Heze Architectural Planning and Design Institute,Heze,Shandong 274000,China) | 2012 | Journal of Landscape Research2012，4，7： | 1 |
| 18 | A new metric for ranking high-performance computing systems显示文摘INTRODUCTION Performance benchmarks play an important role in various stages of hardware development and use.During development,hardware designers use benchmarks as proxies for full-fledged applications because prototype systems have a limited set of software tools that the | Jack Dongarra Michael A.Heroux Piotr Luszczek | 2016 | National Science Review2016，3，1： | 1 |
| 19 | AJAX技术在WebGame中的应用显示文摘介绍如何在WebGame中使用AJAX技术。WebGame是一种基于互联网技术并以在线方式运行的游戏系统。AJAX使客户端能在后台访问服务器并可按需求取回数据,从而避免了整个页面的刷新。这为交互较多、频繁读取数据的WebGame提供了一个很好的解决方案。 | 郭毅棋 | 2009 | 现代计算机2009，15，9： | 1 |
| 20 | SEDIMENTARY PATTERN OF PROTOTYPE BASIN IN THE DEPOSITION PERIOD OF LAIYANG FORMATION AND THE ADVANTAGEOUS AREAS FOR OIL AND GAS EXPLORATION OF JIAOLAI BASIN显示文摘Laiyang formation of Jiaolai Basin is the target stratum for oil and gas exploration. By measuring several field sections, the authors find that Laiyang formation reveals the whole processes from development to death of the lake basin and its sedimentary facies differ in different structural locations. Analyses about sedimentary facies and paleocurrent orientations in association with researches about the positive tectonic units such as Dayetou horseback and Chaigou horst indicate that Laiyang sag is a relatively independent sedimentary unit that shows great water depth typical of deep lake or semideep lake and was controlled by Wulongcun fault during the deposition period of Laiyang formation. Its sediments mainly originated from Jiaobei uplift area and Dayetou horseback. Gaomi-Zhucheng sag was a fast-filled basin controlled by Wurong fault and Yishu fault zone, being high in the northeast and low in the northwest and characterized by the development of pluvial facies and fluvial facies in most areas, and with the development of lake facies being limited to local low-lying regions. Selection of advantageous hydrocarbon reservoir areas for exploration purpose mainly relies on the sedimentation pattern of prototype basin and conservation conditions. The central-west area of Laiyang sag covered by overlying Laiyang formation is the most advantageous exploration area. | WU Zhiping LI Ling LI Wei ZHOU Yaoqi | 2004 | Geotectonica et Metallogenia2004，28，2： | 1 |
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