An Overview of Wireless Communication Technology Using Deep Learning

with the development of 5G,the future wireless communication network tends to be more and more intelligent.In the face of new service de-mands of communication in the future such as super-heterogeneous network,multiple communication sce-narios,large number of antenna elements and large bandwidth,new theories and technologies of intelli-gent communication have been widely studied,among which Deep Learning(DL)is a powerful technology in artificial intelligence(AI).It can be trained to con-tinuously learn to update the optimal parameters.This paper reviews the latest research progress of DL in in-telligent communication,and emphatically introduces five scenarios including Cognitive Radio(CR),Edge Computing(EC),Channel Measurement(CM),End to end Encoder/Decoder(EED)and Visible Light Com-munication(VLC).The prospect and challenges of further research and development in the future are also discussed.

Effect of Apigenin on Gap Junctional Intercellular Communication in Human Tenon's Capsule Fibroblasts

Purpose:To investigate the effect of apigenin on gap junctional intercellular communication (GJIC) in human Tenon's capsule fibroblasts (HTFs) and its underlying mechanism. Methods:After a 48 h treatment of cultured HTFs with apigenin.(80 μmol/L),the GJIC was detected by a scrape-loading/dye transfer technique with Lucifer yellow dye and rhodamine (Rh) dextran. The coupling index represents a quantification of GJIC where a high coupling index is associated with a greater number of cells demonstrating cell-cell communication through gap junction channels.The changes in connexin 43 (Cx43) distribution and the expression of Cx43 at the protein and mRNA levels were statistically compared between the two groups by means of immunocytochemistry, western blotting,and real-time polymerase chain reaction (PCR). Results:The functioning of GJIC in the HTFs was significantly enhanced after 48 hours by apigenin treatment when compared with the control cells. In the apigenin group, the intercellular dye transfer grade was above 9, while this value was only grade 3-4 in the control group. The coupling index was significantly increased up to 9.205±0.3621 in the apigenin group,compared with 5.1775 ±0.3177 in the control group (F=279.581, P=0.000). The expression of Cx43 at the protein and mRNA levels was significantly up-regulated in the apigenin group compared with the control group. Conclusion:Apigenin can significantly enhance the function of GJIC in HTFs by up-regulating the expression of Cx43 at both the protein and mRNA levels,suggesting that the enhancement of GJIC in HTFs by apigenin probably acts as an important mechanism underlying the inhibitory effect of apigenin on HTF proliferation.

Sampled-data synchronization of coupled harmonic oscillators with controller failure and communication delays

In this letter, a distributed protocol for sampled-data synchronization of coupled harmonic oscillators with controller failure and communication delays is proposed, and a brief procedure of convergence analysis for such algorithm over undirected connected graphs is provided. Furthermore, a simple yet generic criterion is also presented to guarantee synchronized oscillatory motions in coupled harmonic oscillators. Subsequently, the simulation results are worked out to demonstrate the efficiency and feasibility of the theoretical results.

DNA Barcoding of <i>Ricinus communis</i>from Different Geographical Origin by Using Chloroplast <i>matK</i>and Internal Transcribed Spacers

Ricinus communis have attracted considerable attention because of its specific industrial and pharmacological activities. DNA barcodes can be used as reliable tools to facilitate the identification of medicinal plants for the safe use, quality control and forensic investigation. In this study, the differential identification of eight accessions of R. com-munis was investigated through DNA sequence analysis of two candidate DNA barcodes. The nucleotide sequence of internal transcribed spacers (ITS2) and chloroplast maturase gene (matK) have been determined to construct the phylogenetic tree. The phylogenetic relationships of accessions based on the nrITS2 region and partial matK region showed that all accessions in this study were related to three geographical origins. Based on sequence align-ment and phylogenetic analyses we concluded that the ITS2 sequences can distinguish R. communis accessions from different geographical distributions.

Observed communication between oncologists and patients:A causal model of communication competence

AIM： To investigate and test a causal model derivedfrom previous meta-analytic data of health provider be-haviors and patient satisfaction.METHODS： A literature search was conducted forrelevant manuscripts that met the following criteria：Reported an analysis of provider-patient interaction inthe context of an oncology interview; the study hadto measure at least two of the variables of interest tothe model （provider activity, provider patient-centeredcommunication, provider facilitative communication,patient activity, patient involvement, and patient satis-faction or reduced anxiety）; and the information had tobe reported in a manner that permitted the calculationof a zero-order correlation between at least two of thevariables under consideration. Data were transformedinto correlation coefficients and compiled to producethe correlation matrix used for data analysis. The test of the causal model is a comparison of the expected correlation matrix generated using an Ordinary Least Squares method of estimation. The expected matrix iscompared to the actual matrix of zero order correlation coeffcients. A model is considered a possible ft if the level of deviation is less than expected due to random sampling error as measured by a chi-square statistic. The signifcance of the path coeffcients was tested us-ing a z test. Lastly, the Sobel test provides a test of the level of mediation provided by a variable and provides an estimate of the level of mediation for each connec-tion. Such a test is warranted in models with multiple paths.RESULTS： A test of the original model indicated a lack of ft with the summary data. The largest discrepancy in the model was between the patient satisfaction and the provider patient-centered utterances. The observed correlation was far larger than expected given a medi-ated relationship. The test of a modifed model was un-dertaken to determine possible ft. The corrected model provides a fit to within tolerance as evaluated by the test statistic, χ2 （8, average n = 342） = 10.22. Each of the path coefficients for the model reveals that each one can be considered signifcant, P 〈 0.05. The Sobel test examining the impact of the mediating variables demonstrated that patient involvement is a signifcantmediator in the model, Sobel statistic = 3.56, P 〈 0.05. Patient active was also demonstrated to be a signifcant mediator in the model, Sobel statistic = 4.21, P 〈 0.05. The statistics indicate that patient behavior mediates the relationship between provider behavior and patient satisfaction with the interaction.CONCLUSION： The results demonstrate empirical support for the importance of patient-centered care and satisfy the need for empirical casual support of provider-patient behaviors on health outcomes.

A New Adaptive EDCA Approach to QoS of Wireless Communications

Under the background of intelligent transportation application, QoS for various services is different in wireless com-munication. Based on the MAC layer protocol, this paper analyzes the QoS in IEEE 802.11 MAC protocol framework, and proposes a new design of a Differentiation Enhanced Adaptive EDCA (enhanced distribution channel access) approach. The proposed approach adjusts the window zooming dynamically according to the collision rate in sending data frames, makes random offset, and further distinguishes the competition parameters of the data frames that have the same priority, so as to reduce the conflict among the data frames, and improve the channel utilization. Experiments with different service cases were conducted. The simulation results show that: comparing with the conventional EDCA method, the proposed approach can ensure that high priority services are sent with priority, and the overall QoS is highly improved.

强制、同意与性别平等:强奸罪入罪模式及其改革

我国刑法规定的强奸罪确立了以“强制手段”为核心要素的规范结构,可概括为强制模式。在强制手段或被害人反抗不明显的情形中,行为人违反被害人意愿实施性行为却难以受到刑法的制裁,从而使个人性自主权的保护存在重大漏洞。强制不是强奸罪不法的核心,违背他人意志才是强奸罪的本质。以同意替代强制是强奸罪法律规范发展的必然趋势。强奸罪立法的主要任务是为个体之间的性互动确立一个相对客观的、符合社会规范和性别平等价值的沟通规则。根据性互动的沟通结构及其特点,结合性互动行为的实践和不同模式的适用效果,我国宜采取修正的否定同意模式,即一般情形下适用否定同意模式,对虽然具有同意能力但其认知能力和防卫能力存在减损的脆弱人群应适用积极同意模式。

端羟基叠氮呋咱醚氧杂丁烷-HTPE嵌段共聚物合成及内增塑性能

针对增塑剂易迁移、渗出进而严重影响聚合物基复合材料物化性能和机械性能的问题,研究通过3-硝基-4-羟基呋咱与3,3-二溴甲基氧杂丁环(BBMO)偶联合成2种新单体3-(4-硝基呋咱-3-氧甲基)-3-溴甲基氧杂环丁烷(BrNFMO)、3,3-二(4-硝基呋咱-3-氧甲基)氧杂环丁烷(BNFMO),以端羟基聚醚(HTPE)为大分子引发剂,在三氟化硼乙醚催化下分别与BrNFMO、BNFMO以及对照组BBMO共聚后叠氮化,制备得到三种内增塑嵌段共聚物,对其进行结构、热分解行为、内增塑性能测试,并对所设计目标共聚单元进行量化计算以评估其爆轰性能。最后对共聚工艺进行了优化,通过“假活性”聚合策略对引入嵌段的程度进行控制。结果表明,该系列新型含能共聚单元具有优于现有叠氮基氧杂环丁烷单体的能量水平。与直接将叠氮基团引入聚合物相比,通过呋咱醚桥联结构将叠氮基团进行引入能够通过内增塑策略获得具有更低玻璃化转变温度T_(g)与黏度的含能共聚物(T_(g)可降低5.27℃,黏度可降低4.90 Pa·s),其热稳定性也得到了提高(T_(d)可提高7.3℃)。

推拉理论视域下美国社区学院接收国际学生的特征与影响因素及其启示

基于美国国际教育协会的数据,从国际学生数量、生源国、机构类型、就读专业等方面,探究美国社区学院接收国际学生的现状和特征。发现美国社区学院在接收国际学生上展现了明显特征,包括国际学生数量、生源国、机构类型、就读专业等方面。研究表明,美国社区学院的国际学生总量相对稳定,生源国别更加多元,且主要集中在高转学学院,偏好STEM、商务管理和通识教育专业,然而,存在国际学生流入受到疫情影响大、就读院校分布不均衡、资金来源单一等一系列问题。运用推拉因素分析模型,尝试从政治、经济、教育、文化和个人维度,对影响美国社区学院国际学生流动的因素进行解读。并根据美国社区学院接收国际学生的举措与经验,在“一带一路”倡议背景下,为我国高等职业教育在创新教育合作与交流机制,打造国际教育合作平台;加强政府专项资助项目,构筑多元融资的经费投入机制;建设优势品牌项目,提升高职院校国际竞争力等方面提供借鉴。

基于OTN OSU协议的油气管道阀室通信网络方案

随着油气管道阀室通信网络逐渐扩张和承载业务的复杂化,现有的组网方案亟需进行升级更新。提出了基于光传送网光业务单元(OTN OSU)的油气管道阀室通信网络方案。首先,分析了油气管道阀室通信网络组网过程中面临的挑战,并概述了当前组网方案的现状;然后,引入OTN OSU协议对油气管道阀室通信光网络架构进行优化,并设计了工业级光传输客户前端设备(CPE)样机;最后,对方案进行现网环境测试验证。测试结果表明:所提方案有效改善网络时延,且支持多种业务承载,CPE样机功耗低于40 W,提升了网络效率。

基于AEO认证标准的进出口贸易企业内部控制研究

近年来,海关总署大力推进构建以信用为核心的新型海关监管体制,引导企业加强自我管理和自我检查,督促进出口贸易企业形成自律主动纠错的驱动机制。其中,进出口贸易企业内部控制模式的建立尤为重要。现阶段,绝大部分企业在进出口活动上未建立相应的制度约束,因而导致企业损失,制约了企业发展。本文基于AEO认证标准中对内部控制的要求,从内部环境、风险评估、控制活动、信息与沟通、内部监督五个方面分析了进出口贸易企业内部控制存在的问题及产生原因,针对性地提出了内部控制优化策略,旨在完善内部控制理论在进出口贸易领域的应用,助力进出口贸易企业建立健全内部控制机制,以提高企业在国际市场上的竞争力和可持续发展能力,减少经营风险和提高经营效益。

催化裂化装置富气压缩机级间冷却器改造

陕西延长石油(集团)有限公司延安炼油厂100万t/a催化裂化装置富气压缩机级间冷却器管束泄漏频繁,使用周期较短,影响装置长周期运行。通过对管束泄漏原因进行分析,制定改进措施,对级间冷却器进行改造,改造后使用效果明显,满足了装置长周期运行需求。

数字化变电站的主要特征和关键技术

介绍了目前数字化变电站的技术基础,较完整地分析了数字化变电站的主要技术特征,介绍了非常规传感器的稳定性、网络通信的可靠性、IED设备之间的互操作性、数据的同步传输和信息安全性等实现数字化变电站的关键技术,总结了建设数字化变电站的技术和经济意义。

网络环境中MPI和PVM的分析与比较

消息传递接口(MessagePassingInterface,MPI)和并行虚拟机(ParallelVirtualMachine,PVM)是两种广泛应用的网络分布式并行计算环境。论文首先介绍了消息传递接口和并行虚拟机两者各自的起源和特点,然后在此基础上从可移植性、点对点通信、集体通信、资源管理和容错能力等多方面分析和比较了这两者的功能特点。

采用无线通信技术的避雷器检测器

提出的避雷器在线检测方案能自动测量泄漏电流、记录雷击时间和累计雷击次数。避雷器检测器以微处理器(MPU)为核心,由太阳能电池和唤醒、泄漏电流采集、雷击计数脉冲、无线收/发控制、LCD显示等电路组成。避雷器在线检测系统由避雷器检测器、集中器(每个电力变电站使用1台,1台集中器可用短距离无线通信方式与64台检测器通信)、网络检测系统3部分组成。避雷器在线检测系统现场投运1年来,运行良好。

大学生人际交往小组辅导的理论与实践

大学生人际交往小组辅导是在高校针对大学生中普遍存在的人际交往困惑和障碍开展的,这一小组活动的尝试,验证了小组辅导在帮助大学生解决和处理人际矛盾,促进心理健康方面起着有效的作用。其特点体现在:小组辅导感染力强,体验深刻,影响广泛;小组辅导效率高,省时省力,减少学生顾虑;小组辅导效果容易巩固,尤其适用于人际关系适应不良的人。

通信设备机箱强电磁脉冲耦合预测方法

核电磁脉冲可以从通信设备机箱孔缝、键盘、接头等开口进入机箱内部并对电子设备的正常工作时序产生影响,因此,在设备机箱设计中需要对强电磁脉冲辐射下机箱内部的强电磁脉冲环境进行预测。然而,由于通信设备机箱体积小,而强电磁脉冲的带宽过宽,常规的小探头难以对电磁脉冲波形进行测量。基于此,给出一种通信设备机箱强电磁脉冲耦合仿真新方法。首先,利用机箱频域屏蔽效能测试结果对通信机箱仿真模型的正确性进行验证;然后,利用上述仿真模型对强电磁脉冲的耦合特性进行仿真。研究表明,上述方法可以运用于小腔体强电磁脉冲耦合特征的预测。

判定有限域上不可约多项式及本原多项式的一种高效算法

提出了一个判定有限域上任一多项式是否为不可约多项式、本原多项式的高效的确定性算法。分析了多项式次数与其不可约因式之间的内在联系,给出了有限域上任意n次多项式是否为不可约多项式、本原多项式的一个充要条件。通过利用欧几里得算法,该判定仅需做O((log2n)n3)次域上乘法,属于多项式时间,易于硬件实现。为扩频通信与序列密码寻找和利用不可约多项式构造线性反馈移位寄存器提供了一种有效算法。

基于IEC61850光伏监控装置硬件和模型设计

从光伏系统监控角度出发,分析IEC61850技术,基于该标准提出适合光伏监控系统的分层设计。研究光伏监控装置的实现,包含件平台设计、装置组件之间通信网络和实时数据映射、通信功能软件流程。结合光伏系统功能给出光伏监控系统相关的逻辑节点,分析光伏监控装置的信息建模内容。在楼顶10 k W光伏发电系统中利用IEDScout软件模拟站控层对该装置进行制造报文规范(MMS)通信验证,获取设备模型,实现光伏系统各组件的IEC61850标准支持。站控层可通过该装置实现与光伏系统各组件的信息共享和互操作,有效保障光伏电站安全运行。

基于RS-485总线的仓储网络监控系统的设计与实现

围绕仓储网络监控系统设计与开发工作进行研究和实践,详细介绍了基于RS-485总线协议的仓储网络监控系统的整体结构、硬件设计、系统通信网络方案以及系统软件的开发和具体实现。