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| 1 | Psychometric hepatic encephalopathy score for diagnosis of minimal hepatic encephalopathy in China显示文摘AIM:To construct normal values for the tests of the psychometric hepatic encephalopathy score(PHES)and to evaluate its usefulness in the diagnosis of minimal hepatic encephalopathy(MHE)among Chinese individuals with cirrhosis.METHODS:The five tests of PHES,number connection test-A(NCT-A),number connection test-B,serial dotting test,line tracing test and digit symbol test(DST),were administered to all enrolled subjects in a quiet room with sufficient light.Cirrhotic subjects with overt HE were excluded by the West-Haven criteria and a detailed neurological examination.Based on the nomograms of healthy volunteers,the patients were classified as having MHE when their PHES was less than-4.RESULTS:In total,146 healthy volunteers completed all the PHES tests.Age and education years were confirmed to be predictors of all five tests.In total,53patients with liver cirrhosis completed the PHES.Of the patients with liver cirrhosis,24(45.3%),22(41.5%)and 7(13.2%)had Child-Pugh grades A,B and C,respectively.MHE was diagnosed in 26 patients(49.1%).Compared with compensated cirrhotic patients(Child A),decompensated cirrhotic patients(Child B and C)had a higher proportion of MHE(65.5%vs 29.2%).No differences in age and education years were found between the MHE and non-MHE groups.NCT-A and DST were able to diagnose MHE with a sensitivity of 76.9%and a specificity of 96.3%(AUC=0.866,K=0.735).CONCLUSION:The proportion of MHE is associated with liver function.NCT-A and DST are simple tools that can be used for the diagnosis of MHE in China. | Su-Wen Li Kai Wang Yong-Qiang Yu Hai-Bao Wang Yuan-Hai Li Jian-Ming Xu | 2013 | World Journal of Gastroenterology2013，19，46： | 21 |
| 2 | 循环ALCN-Tbox具有模型的条件显示文摘分析了带循环定义的描述逻辑系统ALCN的研究现状和存在的问题,研究了循环ALCN-Tbox具有模型的条件,指出了Baader文中命题2.9(LetTbe a terminology such that each cycle inGTcontains an even number ofnegative arcs.ThenTis monotone)的错误,并对该命题进行了修改,给出了循环ALCN-Tbox具有不动点模型(最小不动点模型和最大不动点模型)的条件. | 曹发生 余泉 王驹 蒋运承 | 2008 | 计算机学报2008，31，1： | 13 |
| 3 | Characterising the Accuracy of Multivariable Refinable Functions via the Symbol Function | Qiu Hui SHENG School of Mathematics and Computer Science. Hubei University, Wuhan. 430062. P. R. China Institute of Mathematics. Academy of Mathematics and Systems Science. Academia Sinica. Beijing 100080. P. R. China Han Lin CHEN Institute of Mathematics, Academia Sinica, Beijing 100080, P. R. China | 2001 | Acta Mathematica Sinica,English Series2001，17，2： | 7 |
| 4 | Low-Complexity Joint Channel Estimation and Symbol Detection for OFDMA Systems显示文摘In this paper,we propose a joint channel estimation and symbol detection(JCESD)algorithm relying on message-passing algorithms(MPA)for orthogonal frequency division multiple access(OFDMA)systems.The channel estimation and symbol detection leverage the framework of expectation propagation(EP)and belief propagation(BP)with the aid of Gaussian approximation,respectively.Furthermore,to reduce the computation complexity involved in channel estimation,the matrix inversion is transformed into a series of diagonal matrix inversions through the Sherman-Morrison formula.Simulation experiments show that the proposed algorithm can reduce the pilot overhead by about 50%,compared with the traditional linear minimum mean square error(LMMSE)algorithm,and can approach to the bit error rate(BER)performance bound of perfectly known channel state information within 0.1 dB. | Rui Xin Zuyao Ni Sheng Wu Linling Kuang Chunxiao Jiang | 2019 | China Communications2019，16，7： | 4 |
| 5 | Symbol Error Rate Performance Analysis of Non-Orthogonal Multiple Access for Visible Light Communications显示文摘Non-orthogonal multiple access(NOMA) is considered as one of promising radio access techniques for visible light communications(VLC) in next-generation wireless communications systems.In order to provide theoretical support for designing VLC-NOMA,we derive its analytic expressions for the symbol error rate(SER).Specifically,NOMA is first incorporated with appropriate VLC to establish a VLC-NOMA framework.Afterwards,mathematical expressions of the SER for the VLC-NOMA are developed.Moreover,numerical results are provided carefully to demonstrate that the proposed VLC-NOMA scheme outperforms than state-of-the-art orthogonal frequency division multiple access(OFDMA) one in terms of SER performance.Finally,relationships between the SER performance and the number of users,power allocation coefficient and semi-angle are well investigated,which can give us a scientific guide to devise the VLC-NOMA system for achieving better SER performance. | Hongji Huang Jinyuan Wang Jie Wang Jie Yang Jian Xiong Guan Gui | 2017 | China Communications2017，14，12： | 3 |
| 6 | 中国传统民间图形符号初探显示文摘传统民间图形符号是中国5000年历史文化的物化代表,其包含了丰富的文化信息和视觉审美内涵。是中国传统民间文化的精神内核,其题材多样,内容丰富,寓意深刻,它是祖先智慧的结晶,反应了人们的精神世界以及对理想生活的追求。图形符号的概述1.图形与符号的解释根据百度百科的解释,图形符号(graphic symbol) | 金利 | 2015 | 现代装饰(理论)2015，0，2： | 3 |
| 7 | Inheritance and allelism of morphological traits in eastern redbud (Cercis canadensis L.)显示文摘Inheritance of purple,gold,and variegated foliage types,weeping architecture,and double flower was explored in F1,F2,and backcross families resulting from controlled hybridization of eastern redbud(Cercis canadensis L.).Potential allelic relationships were explored when possible.Inheritance analysis in families derived from controlled hybridization of‘Covey’(green leaf)and‘Forest Pansy’(purple leaf)suggest that purple leaf color and weeping architecture are both controlled by single recessive genes,for which the symbols pl1 and wp1 are proposed,respectively.Inheritance of gold leaf was explored in families of‘Covey’(green leaf)בHearts of Gold’(gold leaf).Interpretation of inheritance of gold leaf in these families was confounded by the recovery of a leaf color phenotype in the F2 family unlike either parent.However,data suggested the action of a single locus controlling gold leaf color in‘Hearts of Gold’,and that instability of gold leaf expression may be based on transposable element activity.Segregation of gold leaf in the F2 families of‘Texas White’[green leaf(C.canadensis var.texensis)]בJN2’[gold leaf(The Rising Sun)]did not fit a Mendelian ratio.Analysis of progeny of‘Silver Cloud’and‘Floating Clouds’(both showing white/green leaf variegation)with non-variegated cultivars demonstrated that variegation in‘Silver Cloud’is controlled by a single recessive nuclear gene,while variegation in‘Floating Clouds’is controlled by cytoplasmic factors.The symbol var1 is proposed for the gene controlling variegation in‘Silver Cloud’.Double flower in progeny derived from‘Flame’(double flower)suggested that double flower is dominant to single flower,and that‘Flame’is heterozygous at the double-flower locus,for which the symbol Df1 is proposed.Allelism studies showed that the gene controlling purple leaf in‘Forest Pansy’is allelic to the purple leaf gene in‘Greswan’and that the gene controlling weeping phenotype in‘Traveller’(C.canadensis var.texensis)is non-allelic to the weeping gene found in‘Covey’.Allelism of the gold leaf trait in‘Hearts of Gold’and‘JN2’was investigated,but no clear conclusions regarding allelism could be made due to recovery of leaf color phenotypes unlike either parent. | David J.Roberts Dennis J.Werner Phillip A.Wadl Robert N.Trigiano | 2015 | Horticulture Research2015，2，1： | 3 |
| 8 | 基于CHS的数据库建设与应用显示文摘Capital Symbol和Capital Library是基于CHS软件实现汽车电气系统设计平台化、通用化、信息数据化管理;本文主要介绍基于CHS软件应用过程中如何在Capital Symbol模块和Capital Iibrary模块,创建线束设计的基础数据库,其中包含图形绘制和数据创建两部分内容;用于指导如何创建CHS基础数据库,为后续能高效、高质量的完成汽车线束设计工作提供保证。 | 李荫荣 | 2015 | 汽车实用技术2015，12，6： | 3 |
| 9 | Syntactic Characteristics and a Smart Construction Mechanism for Thematic Map Symbols显示文摘The construction of thematic map symbols is a very complex and intellectually demanding process,but thematic symbols can be automatically generated and easily shared on the web using the syntactic structure of semantic symbols.In this paper,the symbol types,inner structure,and design pattern are discussed.A syntactic construction theory based on letter (thematic maps primitive)-word (single thematic symbol)-sentence (combined symbols or complex symbols) structure model is proposed to automate the construction of thematic map symbols.As a result of this research,symbols can be defined using cartographic primitives which are arranged according to syntactic principles.A semiotic model and word-centered construction theory can be integrated into interactive cartography as represented by the technology of Internet.Finally,the concepts and schema of this theory are discussed,and some examples are presented based a web thematic cartographic system to verify its utility. | Fei ZHAO Qingyun DU Fu REN Guizhi WANG | 2019 | Journal of Geodesy and Geoinformation Science2019，2，1： | 2 |
| 10 | On the Enlightenment from Traditional Chinese Elements to Modern Gardens显示文摘Classical Chinese gardens were investigated from the perspective of semiotics,it was proposed that single constructions,decoration patterns on components,and construction of natural scenery could all be regarded as symbols.Influence of traditional Chinese elements and patterns on modern gardens was analyzed,'Small Penglai Island' in the Lingering Garden and 'The Fifth Garden' of Vanke in Shenzhen were taken for example to summarize referential significance of traditional Chinese gardens for modern garden design from the perspectives of artistic ambience,gardening technique and landscape element.On the basis of exploring and interpreting traditional Chinese cultures,inheritance of classical Chinese gardens in modern gardens was studied in addition to its innovation. | LI Wenqin,XIONG Jianxin(Nanchang Hangkong University,Nanchang,Jiangxi 330063,China) | 2012 | Journal of Landscape Research2012，4，7： | 2 |
| 11 | 关于“救赎”的寓言叙事——中华内地会晚清传教画解读显示文摘1897年,在中国内地传教13年的内地会(China InlandMission,CIM)英国传教士威廉姆·威尔逊(William Wilson)写了一本名为《以目人心:中国传教事业中本土美术之价值》(EYE-GATE:The value of native art in the evangelization ofChina,后文均简称《以目入心》)的小书。在书中。 | 褚潇白 | 2010 | 基督教文化学刊2010，，2： | 2 |
| 12 | 象征符号论——《论象征》之三显示文摘在这一章里,我们从符号学的视角来分析象征的内部结构与关系。所谓符号是指某种事物,它被用来表示另一种与它本身不同的事物。象征,英语词为Symbol,既可译为象征,又可译作符号。符号的涵义与我们所说的象征不无相通之处,象征也是指某种能表示与自身不同意义的事物。按照瑞士语言学家索绪尔的观点。 | 刘鸿模 | 1989 | 淮北师范大学学报(哲学社会科学版)1989，21，3： | 2 |
| 13 | A CHARACTERIZATION OF N-DIMENSIONAL DAUBECHIES TYPE TENSOR PRODUCT WAVELET显示文摘In this paper, we consider the problem of the existence of general non-separable variate orthonormal compactly supported wavelet basis when the symbol function has a special form. We prove that the general non-separable variate orthonormal wavelet basis doesn’t exist if the symbol function possesses a certain form. This helps us to explicate the difficulty of constructing the non-separable variate wavlet basis and to hint how to construct non-separable variate wavlet basis. | 李登峰 彭思龙 | 2001 | Acta Mathematicae Applicatae Sinica2001，17，3： | 2 |
| 14 | 浅析商标标志设计显示文摘商标,英文名称TRADE.MARK是商品的标志(SYMBOL)或符号(SIGN)。标志,英文名称SYMBOL是代表特定事物或机构,具有某种特殊含义或象征意义的符号。二者在性质特点和表现形式上有很多相似之处,所以学多国家把商标放在标志中加以介绍,但二者又有一定的区别,有些企业的标志往往又是其产品的商标,商标主要用于商业活动中,使生产者对产品质量的保证,诱使消费者识别商品的依据。如中美合资广州宝洁公司生产的化妆品.其洗发系列的商标是“飘柔(Rejojce)”和“海飞丝”护肤系列为“玉兰油(Oil of viom)”,而宝洁公司的标志则为“P&G”。 | 王保军 | 2008 | 职业技术2008，，8： | 2 |
| 15 | Bistable Stochastic Resonance Enhanced 4-ary PAM Signal Detection under Low SNR显示文摘To boost the performance of 4-ary pulse amplitude modulated(PAM) at low signal-to-noise ratio(SNR), bistable stochastic resonance(BSR) system is introduced into digital communications system and get a reliable signal detection scheme. In this paper, we first analyse BSR system for different amplitudes of 4-ary PAM signals. The steadystate of the bistable system will be statistically distinct, and the feasibility of the proposed detection scheme is confirmed. On this basis, we present a detailed study on steady-state transitions of the BSR system, and an explicit expression of the bistable system parameters is derived. By setting the bistable system parameters, bistable system, 4-ary PAM signal, and noise reach the resonance state, and the BSR-based detection scheme is implemented. Moreover, we derive an analytical expression to calculate the symbol error rate(SER) of 4-ary PAM signals with the BSR-based detection under additive white Gaussian noise(AWGN). Finally, the simulation results validate that BSR-based detection scheme can improve the detection performance while efficiently reducing the symbol error rate. | Linlin Liang Nina Zhang Haiyan Huang Zan Li | 2019 | China Communications2019，16，4： | 2 |
| 16 | 中国关于奥林匹克标志保护的立法显示文摘2001年7月13日,北京市取得了第29届奥运会的主办权。根据《奥林匹克宪章》和《第29届奥林匹克运动会主办城市合同》,国务院于2002年2月4日公布了《奥林匹克标志保护条例》,完成了对奥林匹克标志这类特殊知识产权保护的立法。奥林匹克标志专有权保护的客体条例第二条全面规定了奥林匹克标志专有权保护的客体,包括:国际奥林匹克委员会的奥林匹克五环图案标志、奥林匹克旗、奥林匹克格言、奥林匹克徽记、奥林匹克会歌:奥林匹克、奥林匹亚、奥林匹克运动会及其简称等事有名称;中国奥林匹克委员会的名称、徽记、标志;北京2008奥林匹克运动会申辩委员会的名称、徽记、标志; | 张见华 梁清华 | 2002 | 中国专利与商标2002，，4： | 1 |
| 17 | SOME REMARKS ON CCR AND WEYL OPERATORS显示文摘Using the symbol calculus developed by Berezin, Kree and Raczka, it is shown that the algebra generated by the canonical commutation relation (CCR) is splitted into creation part and annhilation part with holomorphic and anti-bolomorphic symbols respectively. Further. in the Weyl representation of CCR, three Weyl operators will constitute an irreducible set of the fall CCR-algebra if some number theoretic conditions are satisfied. | 骆顺龙 | 1998 | Acta Mathematica Scientia1998，18，S1： | 1 |
| 18 | 寻觅失落的寓意——评丹·布朗的最新力作《失落的秘符》显示文摘因文化悬疑小说《达·芬奇密码》而红遍全球的美国作家丹·布朗历经六年案头研究和精心构思,终于在2009年9月15日推出了自己的最新力作《失落的秘符》(The Lost Symbol,原名曾为《所罗门钥匙》,后改为现名)。 | 朱振武 李丹 | 2010 | 外国文学动态2010，，1： | 1 |
| 19 | Analysis of Paleoseismic Events of Dahuzhuang Trench at the Xiadian Fault显示文摘The Xiadian Fault is a very important concealed active fault in the Beijing Plain. It is the seismogenic fault of the Sanhe-Pinggu MS8. 0 earthquake in 1679. The ancient earthquake sequence in the long historical period is of great significance to understand accurately the activity characteristics of the fault and effectively reduce the earthquake disaster risk in Beijing. We have re-interpreted the Dahuzhuang trench,and identified three layers of buried paleosol,six collapsed wedges and one sand liquefaction event. Further,through the comparison with the landmark strata and paleo-earthquake events revealed by other trenches on the fault,an ancient earthquake sequence with a long historical period of the Xiadian Fault was established:since the 31 ka,the Xiadian Fault has 11 occurrences of earthquake events(including the 1679 earthquake),and the average recurrence interval is about 2. 8 ka. The paleo-seismic sequence also shows that there is an ancient earthquake cluster period from 25 ka to 15 ka,and there are 5 strong earthquakes in the cluster period.The average recurrence interval is about 2. 0 ka,which reflects the phase difference of the Xiadian Fault activity. | DENG Mei SHEN Jun LI Xi DAI Xunye LIU Zezhong LI Kechang JIAO Xuankai | 2019 | Earthquake Research in China2019，33，3： | 1 |
| 20 | Non-Coherent Multi-Symbol Detection of PR-CPM for Deep Space Relay Satellites with Physical-Layer Network Coding显示文摘The demand for wireless spectrum and data transmission has increased dramatically with the rapid growth of deepspace exploration and communication.The satellite relay communication is an essential technique to solve the issues above.The method of combining Physical-layer Network Coding(PNC)with Continuous Phase Modulation(CPM)on relay satellites can improve communication efficiency and perform the collection and transmission of space data effectively.Partial-Response CPM(PR-CPM)signals possess excellent spectrum and power characteristics and are suitable for deep-space communications with limited bandwidth and massive data transmission.In this paper,a partial response non-coherent multi-symbol detection algorithm is proposed based on the Maximum-Likelihood principle.The proposed algorithm fully utilizes the memory properties of PR-CPM signals and makes decisions on specified symbols by observing a number of symbols each time.Simulation results indicate that the performance gain under the Bit Error Rate of 10-4 is about 2 dB when 5 symbols are inspected,compared with the case where the observation length is 3. | Meng Wang Chongzheng Hao Xiaoyu Dang Xiangbin Yu | 2020 | China Communications2020，17，7： | 1 |
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