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    Performance emulation and test for 5G massive MIMO base station by Xiaolong LIU, Guiming WEI, Xiang ZHANG, Yuxin REN, Jiamo JIANG

    Published 2020-06-01
    “…The new radio (NR) of 5G has gathered three main application scenarios and has broken the restrict of the air interface transmission,laying a solid foundation of the information science.Massive MIMO based base station (MMBS) has become the important fulcrum in the implementation deployment of 5G networks.In order to determine performance of the MMBS in sub 6 GHz band,the physical (PHY) layer techniques were firstly introduced,then,for providing a benchmark of the MMBS products,the evaluation method for upbound of the PHY performance and the PHY performance under the fast fading channel environment was given.Based on that,the current mainstream MMBS performance testing methods were analyzed,and a performance testing scheme was proposed which had been suitable for current commercial version of the MMBS.The proposed scheme can be used to test the function and performance of the products with 5G technique.By the end of 2019,there are many manufacturers of MMBS products have been tested by this solution.…”
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  5. 905

    Encounter Risk Analysis of Rainstorm and Tide Base on Different Sampling Method by WANG Shangwei, LIU Zengmei

    Published 2024-01-01
    “…Waterlogging disaster in tide-affected area usually occurs under the influence of rainstorm and tide level.In the process of risk analysis of rainstorm and tide level,different sample methods will affect the risk probability results.Taking Zhong-Zhu union catchment as an example,based on annual maximum series sampling method and peak over threshold sampling method combined with Copula function,the risk analysis results indicate that:①Sample data obtained based on peak over threshold sampling method has a larger sample size,which contains more rainstorm events than sample data obtained based on annual maximum series sampling method,and these rainstorm events tend to encounter high tide;②On the basis of containing more effective sample information,the frequency analysis results obtained by peak over threshold sampling method are more accurate and with much more security from the perspective of waterlogged drainage;③The joint distribution of rainstorm and tide based on peak over threshold sampling method showed a better fitting degree,and the probability of encountering unexpected events is larger as a result of annual maximal series sampling method omitted some effective sample information.…”
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    Numerical Analysis of Bearing Behavior of the Prebored Precast Pile with an Enlarged Base by Zao Ling, Jiangbin Wu, Weidong Wang

    Published 2021-01-01
    “…Prebored precast pile with an enlarged base (PPEB pile) is a new type of green and environmental protection pile foundation developed in China in recent years, which has complex bearing characteristics and many influencing factors. …”
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    Syntheses and Characterization of Some Tetradentate Schiff-Base Complexes and Their Heteroleptic Analogues by A. A. Osowole

    Published 2008-01-01
    “…VO(IV), Ni(II) and Cu(II) complexes of the asymmetric Schiff base [(HOC6H3(OCH3)C(C6H5):N(CH2CH2)N:C(CH3)CH:C(C6H5)OH)], and their heteroleptic analogues with triphenyl phosphine and 2,2’-bipyridine have been synthesized and characterized by elemental analyses, conductance, magnetic, infrared and electronic spectral measurements. …”
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    Los tratados internacionales como base de la diplomacia mundial. by Larys Leiba Hernández Villalobos

    Published 2004-01-01
    “…Las fuentes documentales utilizadas se en marcan dentro del ámbito constitucional, legal y doctrinal. …”
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    Indicators to Evaluate Base Running in Baseball, First Category from Mayabeque by H.G. Jose Luis, M.S. Jose Francisco, V. P. Mercedes

    Published 2024-07-01
    “…In the last seasons of the National Series there has been a loss of the possibilities in the base run by the first category Baseball players. …”
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    A Survey study on design procedure of Seismic Base Isolation Systems by Hossein Shakeri Soleimanloo

    Published 2013-07-01
    “…Adding shear walls or braced frames can decrease the potential damage caused by earthquakes.We can isolate the structures from the ground using the Seismic Base Isolation Systems that is flexible approach to decrease the potential damage. …”
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    In vitro Biological Evaluation of 1,2,4-triazole Mannich Base by Mahmood Sherzad Rafaat, Arzu Karatepe, Serhat Keser, Şule İnci, Semih Dalkılıc

    Published 2023-12-01
    “…Biological evaluation of a 1,2,4-triazole mannich base that has been synthesized for interesting behavior in medicinal chemistry, so it’s interesting to synthesize triazole derivatives and investigate their biological properties to evaluate their capacity in medicine. …”
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    Acid-Base Status Disturbances in Patients on Chronic Hemodialysis at High Altitudes by Javier Enrique Cely, Oscar G. Rocha, María J. Vargas, Rafael M. Sanabria, Leyder Corzo, Roberto E. D'Achiardi, Eduardo A. Zúñiga

    Published 2018-01-01
    “…Normal values for the altitude of Bogotá were taken into consideration for the interpretation of the arterial blood gases. Results. 43% (n= 40) of patients showed predialysis normal acid-base status. …”
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    Computational approach to grain boundary segregation engineering of nickel-base superalloys by Haruna Uruchida, Yuhki Tsukada, Yusuke Matsuoka, Toshiyuki Koyama

    Published 2024-06-01
    “…The regression coefficients for the features confirm that B segregation at the GB has a non-negligible strengthening effect on nickel-base superalloys.…”
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    O MODERNISMO NA CASA-GRANDE: a infância da sociologia. by José Luiz Ithamar Passos

    Published 2014-04-01
    “… A obra de Gilberto Freyre constitui- se em um dos importantes momentos de inflexão do pensamento social brasileiro rumo a consolidação da reflexão sociológica propriamente dita. …”
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    Static and Dynamic Load Tests of Shaft and Base Grouted Concrete Piles by Jialin Zhou, Xin Zhang, Hongsheng Jiang, Chunhao Lyu, Erwin Oh

    Published 2017-01-01
    “…This paper examines shaft and base grouted concrete piles by conducting vertical static load tests (SLTs) and dynamic load tests. …”
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    Diesters Biolubricant Base Oil: Synthesis, Optimization, Characterization, and Physicochemical Characteristics by Jumat Salimon, Nadia Salih, Bashar Mudhaffar Abdullah

    Published 2012-01-01
    “…Diesters biolubricant base oil, oleyl 9(12)-hydroxy-10(13)-oleioxy-12(9)-octadecanoate (OLHYOOD) was synthesized based on the esterification reaction of 9,12-hydroxy-10,13-oleioxy-12-octadecanoic acid (HYOOA) with oleyl alcohol (OL) and catalyzed by sulfuric acid (SA). …”
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