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由国乒退赛事件传播引发的偏差及纠差策略分析——基于第三人效果理论
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作者 胡静 何海艳 樊庆岗 《文体用品与科技》 2018年第14期54-55,共2页
2017年国际乒联世界巡回赛中国公开赛3名主力运动员弃赛事件,经主流媒体报道后,由于受众者的认知偏差和后续行为偏差引起非理性表达诉求,增加社会的对抗性。此事件的产生与新媒介的传播密不可分,文章基于“第三人效果”理论研究框架,对... 2017年国际乒联世界巡回赛中国公开赛3名主力运动员弃赛事件,经主流媒体报道后,由于受众者的认知偏差和后续行为偏差引起非理性表达诉求,增加社会的对抗性。此事件的产生与新媒介的传播密不可分,文章基于“第三人效果”理论研究框架,对事件传播过程及影响进行分析,对造成认知偏差和行为偏差进行解析,从受众个人素养、传播内容性质、社会地位和主流媒体影响三方面分析导致偏差的原因,最后提出解决认知偏差和行为偏差的策略,为如何营造一个良好的传播环境提供一些建议,使乒乓球项目在新媒介环境下更加健康的发展。 展开更多
关键词 第三人效果 国乒退赛 传播偏 纠差
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模拟数据采集系统误差的自动纠正 被引量:1
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作者 郭光明 王秀华 《电子与自动化》 2000年第5期11-13,共3页
基于电可编程模拟电路设计的一个简单而又精确的模拟数据采集系统 ,通过软件误差校正和增益设定技术 ,可自动纠正系统误差和增益误差 。
关键词 电可编程模拟电路 数据采集系统 自动纠差
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A Novel Deterministic Quantum Communication Scheme Using Stabilizer Quantum Code 被引量:3
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作者 GUO Ying CHEN Zhi-Gang +1 位作者 HUANG Da-Zu ZENG Gui-Hua 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第1期93-99,共7页
Exploiting the encoding process of the stabilizer quantum code [[n, k, d]], a deterministic quantum communication scheme, in which n - 1 photons are distributed forward and backward in two-way channel, is proposed to ... Exploiting the encoding process of the stabilizer quantum code [[n, k, d]], a deterministic quantum communication scheme, in which n - 1 photons are distributed forward and backward in two-way channel, is proposed to transmit the secret messages with unconditional security. The present scheme can be implemented to distribute the secret quantum (or classical) messages with great capacity in imperfect quantum channel since the utilized code encodes k-qubit messages for each scheme run. 展开更多
关键词 quantum key distribution quantum error-correction code quantum information
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ON CLASSICAL BCH CODES AND QUANTUM BCH CODES 被引量:3
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作者 Xu Yajie Ma Zhi Zhang Chunyuan 《Journal of Electronics(China)》 2009年第1期64-70,共7页
It is a regular way of constructing quantum error-correcting codes via codes with self-orthogonal property, and whether a classical Bose-Chaudhuri-Hocquenghem (BCH) code is self-orthogonal can be determined by its des... It is a regular way of constructing quantum error-correcting codes via codes with self-orthogonal property, and whether a classical Bose-Chaudhuri-Hocquenghem (BCH) code is self-orthogonal can be determined by its designed distance. In this paper, we give the sufficient and necessary condition for arbitrary classical BCH codes with self-orthogonal property through algorithms. We also give a better upper bound of the designed distance of a classical narrow-sense BCH code which contains its Euclidean dual. Besides these, we also give one algorithm to compute the dimension of these codes. The complexity of all algorithms is analyzed. Then the results can be applied to construct a series of quantum BCH codes via the famous CSS constructions. 展开更多
关键词 Quantum error-correcting codes Bose-Chaudhuri-Hocquenghem (BCH) codes Self-orthogonal Euclidean dual Hermitian dual
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Role of Covariance Correlation Tensor in Establishment of Criterion of Quantum Entanglement
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作者 QIAN Shang-Wu GU Zhi-Yu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第3X期445-450,共6页
This article discusses the role of covariance correlation tensor in the establishment of the criterion of quantum entanglement. It gives a simple example to show the powerfulness in the treatment of quantum dense codi... This article discusses the role of covariance correlation tensor in the establishment of the criterion of quantum entanglement. It gives a simple example to show the powerfulness in the treatment of quantum dense coding,and illustrates the fact that this method also provides theoretical basis for establishing corresponding knotted pictures. 展开更多
关键词 quantum entanglement covariance correlation tensor quantum dense coding knotted picture
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Multiple-Symbol Interleaved RS Codes and Two-Pass Decoding Algorithm
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作者 WANG Zhongfeng Ahmad Chini +1 位作者 Mehdi T.Kilani ZHOU Jun 《China Communications》 SCIE CSCD 2016年第4期14-19,共6页
For communication systems with heavy burst noise, an optimal Forward Error Correction(FEC) scheme is expected to have a large burst error correction capability while simultaneously owning moderate random error correct... For communication systems with heavy burst noise, an optimal Forward Error Correction(FEC) scheme is expected to have a large burst error correction capability while simultaneously owning moderate random error correction capability. This letter presents a new FEC scheme based on multiple-symbol interleaved Reed-Solomon codes and an associated two-pass decoding algorithm. It is shown that the proposed multi-symbol interleaved Reed-Solomon scheme can achieve nearly twice as much as the burst error correction capability of conventional single-symbol interleaved Reed-Solomon codes with the same code length and code rate. 展开更多
关键词 burst error erasure decoding FEC interleaved Reed-Solomon codes
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Tuning Quantum Discord in Josephson Charge Qubits System
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作者 SHANG Boxing ZHANG Weiwei +1 位作者 GUO Yucui XI Xiaoqiang 《China Communications》 SCIE CSCD 2014年第A01期187-194,共8页
A type of two qubits Josephson charge system is constructed, and properties of the quantum discord (QD) as well as the differences between thermal QD and thermal entanglement are investigated. A detailed calculation... A type of two qubits Josephson charge system is constructed, and properties of the quantum discord (QD) as well as the differences between thermal QD and thermal entanglement are investigated. A detailed calculation shows that the magnetic flux is more efficient than the voltage in tuning QD. By choosing proper system parameter the maximum QD can be realized in our two qubits Josephson charge system. 展开更多
关键词 quantum discord Josephson charge qubits
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Digital Self-Calibration Technique Based on 14-Bit SAR ADC 被引量:1
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作者 赵毅强 贾南 +1 位作者 戴鹏 杨明 《Transactions of Tianjin University》 EI CAS 2013年第6期454-458,共5页
An error correction technique to achieve a 14-bit successive approximation register analog-to-digital converter(SAR ADC) is proposed. A tunable split capacitor is designed to eliminate the mismatches caused by parasit... An error correction technique to achieve a 14-bit successive approximation register analog-to-digital converter(SAR ADC) is proposed. A tunable split capacitor is designed to eliminate the mismatches caused by parasitic capacitors. The linearity error of capacitor array caused by process mismatch is calibrated by a novel calibration capacitor array that can improve the sampling rate. The dual-comparator topology ensures both the speed and precision of the ADC. The simulation results show that the SAR ADC after calibration achieves 83.07 dB SNDR and 13.5 bit ENOB at 500 kilosamples/s. 展开更多
关键词 SAR ADC capacitor mismatch error correction technique split capacitor DAC
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A new LS+AR model with additional error correction for polar motion forecast 被引量:8
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作者 YAO YiBin YUE ShunQiang CHEN Peng 《Science China Earth Sciences》 SCIE EI CAS 2013年第5期818-828,共11页
Polar motion depicts the slow changes in the locations of the poles due to the earth's internal instantaneous axis of rotation. The LS+AR model is recognized as one of the best models for polar motion prediction.T... Polar motion depicts the slow changes in the locations of the poles due to the earth's internal instantaneous axis of rotation. The LS+AR model is recognized as one of the best models for polar motion prediction.Through statistical analysis of the time series of the LS+AR model's short-term prediction residuals,we found that there is a good correlation of model prediction residuals between adjacent terms.These indicate that the preceding model prediction residuals and experiential adjustment matrixes can be used to correct the next prediction results,thereby forming a new LS+AR model with additional error correction that applies to polar motion prediction.Simulated predictions using this new model revealed that the proposed method can improve the accuracy and reliability of polar motion prediction.In fact,the accuracies of ultra short-term and short-term predictions using the new model were equal to the international best level at present. 展开更多
关键词 nolar motion forecast. LS+AR model correlation coefficient additional error correction
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The role of constant optimal forcing in correcting forecast models 被引量:3
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作者 FENG Fan DUAN WanSuo 《Science China Earth Sciences》 SCIE EI CAS 2013年第3期434-443,共10页
In this paper,the role of constant optimal forcing(COF) in correcting forecast models was numerically studied using the well-known Lorenz 63 model.The results show that when we only consider model error caused by para... In this paper,the role of constant optimal forcing(COF) in correcting forecast models was numerically studied using the well-known Lorenz 63 model.The results show that when we only consider model error caused by parameter error,which also changes with the development of state variables in a numerical model,the impact of such model error on forecast uncertainties can be offset by superimposing COF on the tendency equations in the numerical model.The COF can also offset the impact of model error caused by stochastic processes.In reality,the forecast results of numerical models are simultaneously influenced by parameter uncertainty and stochastic process as well as their interactions.Our results indicate that COF is also able to significantly offset the impact of such hybrid model error on forecast results.In summary,although the variation in the model error due to physical process is time-dependent,the superimposition of COF on the numerical model is an effective approach to reducing the influence of model error on forecast results.Therefore,the COF method may be an effective approach to correcting numerical models and thus improving the forecast capability of models. 展开更多
关键词 PREDICTABILITY prediction error model error optimal forcing
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Quantum Phase Transitions, Entanglement Spectrum, and Schmidt Gap in Bond-Alternative S=1 Antiferromagnetic Chain 被引量:1
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作者 刘光华 张钰 田光善 《Communications in Theoretical Physics》 SCIE CAS CSCD 2014年第6期759-764,共6页
Bipartite entanglement, entanglement spectrum, and Schmidt gap in S=1 bond-alternative antiferromagnetic Heisenberg chain are investigated by the infinite time-evolving block decimation (iTEBD) method. The quantum p... Bipartite entanglement, entanglement spectrum, and Schmidt gap in S=1 bond-alternative antiferromagnetic Heisenberg chain are investigated by the infinite time-evolving block decimation (iTEBD) method. The quantum phase transition (QPT) from the singlet-dimer phase to the Haldane phase can be detected by the singular behavior of bipartite entanglement, the sudden change of the entanglement spectrum, and the completely vanishing of the Schmidt gap. The critical point is determined to be around rc ^- 0.587, and the second-order character of the QPT is verified. Doubly degenerate entanglement spectra of both even and odd bonds are observed in the Haldane phase, by which one can distinguish the Haldane phase from the singlet-dimer phase easily. Nearest-neighbor antiferromagnetic correlations and next-nearest-neighbor ferromagnetic correlations are found in the whole parameter region. At the critical massless point, although exponentially decaying antiferromagnetie correlation is observed, it approaches to a constant value finally. Therefore, long-range correlations exist and the correlation length becomes divergent at the critical point. 展开更多
关键词 quantum phase transition entanglement spectrum Schmidt gap
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A new probability decoding scheme based on genetic algorithm for FEC codes in optical transmission systems 被引量:1
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作者 袁建国 王琳 +2 位作者 何清萍 李好 王永 《Optoelectronics Letters》 EI 2012年第5期376-379,共4页
Based on the genetic algorithm(GA),a new genetic probability decoding(GPD) scheme for forward error correction(FEC) codes in optical transmission systems is proposed.The GPD scheme can further offset the quantificatio... Based on the genetic algorithm(GA),a new genetic probability decoding(GPD) scheme for forward error correction(FEC) codes in optical transmission systems is proposed.The GPD scheme can further offset the quantification error of the hard decision by making use of the channel interference probability and statistics information to restore the maximal likelihood transmission code word.The theoretical performance analysis and the simulation result show that the proposed GPD scheme has the advantages of lower decoding complexity,faster decoding speed and better decoding correction-error performance.Therefore,the proposed GPD algorithm is a better practical decoding algorithm. 展开更多
关键词 DECODING Error statistics Genetic algorithms Light transmission Probabilistic logics PROBABILITY
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Experimental measurement of covariance matrix of two-mode entangled state 被引量:2
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作者 YU XuDong LI Wei +1 位作者 JIN YuanBin ZHANG Jing 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2014年第5期875-879,共5页
A two-mode entangled state was generated experimentally through mixing two squeezed lights from two optical parametric amplifiers on a 50/50 beam splitter.The entangled beams were measured by means of two pairs of bal... A two-mode entangled state was generated experimentally through mixing two squeezed lights from two optical parametric amplifiers on a 50/50 beam splitter.The entangled beams were measured by means of two pairs of balanced homodyne detection systems respectively.The relative phases between the local beams and the detected beams can be locked by using the optical phase modulation technique.The covariance matrix of the two-mode entangled state was obtained when the relative phase of the local beam and the detected beam in one homodyne detection system is locked and the other is scanned.This method provides a way by which one can extract the covariance matrix of any selected quadrature components of two-mode Gaussian state. 展开更多
关键词 optical parametric amplifier Gaussian entangled state covariance matrix
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