Multichannel deconvolution with spatial refl ection regularization

Seismic deconvolution plays an important role in the seismic characterization of thin-layer structures and seismic resolution enhancement.However,the trace-by-trace processing strategy is applied and ignores the spatial connection along seismic traces,which gives the deconvolved result strong ambiguity and poor spatial continuity.To alleviate this issue,we developed a structurally constrained deconvolution algorithm.The proposed method extracts the refl ection structure characterization from the raw seismic data and introduces it to the multichannel deconvolution algorithm as a spatial refl ection regularization.Benefi ting from the introduction of the reflection regularization,the proposed method enhances the stability and spatial continuity of conventional deconvolution methods.Synthetic and field data examples confi rm the correctness and feasibility of the proposed method.

Hydro-geochemical simulation of the mixing balance of exploitation and reinjection of geothermal fluid

This paper targets its research at the exploitation–reinjection well of geothermal fluid of one geothermal heating project in Tianjin, China, examines such factors as ground temperature, CO_2 partial pressure and stratum lithology, and simulates the changes in the main component contents of geothermal fluids mixed at different proportions in the exploitation and reinjection well. The research findings show that the mixed fluids are increasingly similar in nature to the reinjected water as the reinjection process goes on. It's suggested that the manual method should be used to ensure the reinjected water has the similar mineralization as the exploited ground water in the process of reinjection and some acceptable adjustments should be made according to the specific component and water temperature. The study on water-rock balance calculation shows that PHREEQC can simulate the complicated chemical reactions related to water when the transfer of solute happens, so the necessary technological supports are given for the reasonable development and protection of geothermal resources.

Research on key technologies of deduction of multinational power trading in the context of Global Energy Interconnection

When transnationalized electricity trade is conducted in the context of Global Energy Interconnection(GEI),the transaction settlement usually has a long cycle and high cost and is influenced by the volatility of the exchange rate.It is thus necessary to overcome the problems associated with the transaction settlement,change in the trading model data,and trading strategy in the transnational transaction deduction.To overcome the problem of trade settlement,this paper proposes the use of a digital currency(energy currency)for the cross-border electricity trading settlement based on the special drawing rights of the International Monetary Fund,which is controlled by the Global Energy Interconnection Development and Cooperation Organization(GEIDCO),to enable the proposed currency to become a stable digital currency.The traders can use the energy coins as a unit of currency for quotes,combined with the data pertaining to the changes in the energy information obtained from the GEI framework and data regarding the optimally extrapolated reference trading indicators.To realize the implementation of the multi-trader concurrent transaction deduction using a microservice architecture,this paper proposes a method of computing the microservice and synchronous interaction among the traders,based on the database table data,because the large amount of computation is required to be accomplished asynchronously with a single process.The key technology behind these cross-national electricity trading simulations can not only enable the GEI transnational traders to performed daily real-time trading,but it also demonstrates the advantages of the rapid settlement of the energy currency and the realization of a stable payment in the global energy interconnection cross-border electricity trading.

Deflection modification factors of multistory buildings considering soil-structure interaction

In this investigation,attempts are made to examine the effects of soil-structure interaction on the deflection modification factor of multistory buildings and to clarify the role of deformable soil on this factor.A comprehensive study is conducted to investigate the effect of inertial interaction on displacement demand ratios in soil-structure systems with different structural characteristics and various non-dimensional parameters,using a simplified interacting model.A two-step regression analysis of the nonlinear,dynamic computer simulation results obtained,leads to a reliable and accurate formula for predicting deflection modification factors that incorporate foundation flexibility.The results illustrate that the application of deflection modification factors derived from fixed-base structures can lead to unsafe evaluation of the structures on soft soil.The proposed formula provides a useful tool for design engineers to incorporate the effect of soil-structure interaction into the evaluation of structural deformations.

Study on reflection and transmission characteristics of shear waves at sediment layer interface

Since most of the natural disasters in the Yellow River are caused by sediment,the study of sediment composition,erosion and transport law is a fundamental part of sediment management in the Yellow River.As a method of in-situ testing,shear wave detection can obtain physical parameters such as the shear modulus of sediment.This paper,based on the Biot–Stoll model,deduces the equations for calculating the reflection and transmission coefficients when a shear wave is incident at the interface between sediment layer,and analyzes the effects of frequency,incident angle and porosity on the reflection and transmission coeffi cients of shear waves,as well as the diff erences in the propagation characteristics of longitudinal and shear waves at the interface between sediment layer.The results indicate that the refl ection and transmission coeffi cients of shear waves are linearly related to the porosity of sediment,and the refl ection coeffi cient of shear waves increases with the increase of porosity.The incident angle has a great infl uence on the changes of the reflection and transmission coefficients of shear waves,especially near the critical angle,the coeffi cients change abruptly.The frequency has a great infl uence on the refl ection and transmission coeffi cients of shear waves only near the characteristic frequency of sediment,while deviation from the characteristic frequency,the infl uence is small.The research results have certain signifi cance for obtaining the physical parameters of sediment and analyzying the composition of the Yellow River sediment and its erosion law.

International Communication Theories:Main Development Stages and Reflections

From the Persian Empire in the 5 th Century BC to the age of globalization, the significance of international communication to international studies and related problems has been repeatedly testi ed by history. The theory of international communication originated in the West. In the new era, many of its theoretical perspectives need to be reviewed and re-evaluated. Compared with other communication patterns such as mass communication, international communication is highlighted by notable characteristics such as its concern for core national interests, distinctive strategic objectives and e ective changes. It offers a new approach to showcasing comprehensive strength among countries and regions. The development of international communication theory can be divided into three main stages. One prominent contribution of the established theoretical achievements lies in its re ning of multiple important general laws of international communication based on the actual needs and its forming of a theoretical system. The major limitation is that these theoretical achievements, under the influence of Western centralism, place excessive emphasis on competition while paying scant attention to accommodation and mutual learning. In the face of new characteristics and practical requirements in the new era, international communication theory should be equipped with a broader vision for more breakthroughs and innovations.

SAR无线电引信目标定向探测模型及仿真

为了提高打击地面目标无线电引信定向起爆控制能力,提出一种基于合成孔径雷达(SAR)的对地无线电引信目标定向算法。通过构建弹目交会场景,采用SAR原理合成得到窄波束,对两波束的回波信号进行和差计算得到目标与弹轴的夹角。仿真结果表明,该算法对弹目交会角在39°~64°的方向,目标定向识别误差不大于1.2°,表明了SAR技术能够大幅提高无线电引信对目标的定向精度和算法的泛用性,能够为无线电引信目标定向起爆技术提供技术支持。

略论思辨性阅读的内涵、路径与意义

思辨即批判性思维,本质是理性的反思。思辨性阅读是借助批判性思维的原理、策略与方法而展开的旨在追求合理断言的阅读。在思辨性阅读中,文本是思辨的前提与基础,文本的客观性与独立性,既是对思辨的理性约束,也激发读者思辨求真。思辨性阅读是一个不断质疑、探究的过程,其一般路径是:文本实证(读文)→作者意图探究(读人)→自我反思(读我),以文本反思促进学生的自我反思,培养其实证探究能力与理性开放的精神品质。思辨的意义在于对话与融合,在思辨中才能达成读者与文本的对话、工具性与人文性的融合,而对话与融合正是语言实践的最大价值,也是阅读教学应该追求的最高境界。

基于ECC算法的安全芯片增强双向匿名认证方法

为了解决现有芯片认证方案中,双向通信协议的合法性与唯一性无法保证,导致信息无法完整传输的问题,提出了基于ECC算法的安全芯片增强双向匿名认证方法。设计芯片安全增强结构,计算用户、权威机构密钥,验证传输信息可靠性,以此保证会话密钥分配的安全性。由发送端芯片A向接收端芯片B发送证书,实现证书交换。发送端芯片A根据一定概率推断出接收端芯片B的身份,结合字符实现双向隐匿。设计双向“挑战—应答”机制,根据响应协议,保证了双向通信协议合法性与唯一性,以及信息的完整传输。由实验结果可知,所研究方法在重放攻击情况下能完整传输信息,在口令猜测攻击情况下丢失了[2,7]、[4,5]、[5,5]、[6,6]位置的信息,不能完整传输。

文化相对主义中的价值困境与反思探究

在现代社会,伴随着全球化进程的加快,不同群体之间的文化交流也变得空前频繁。但在文化交流过程中,由于诸多社会因素的影响,导致文化交流之间的不平等。经济高速发展的国家依靠自身优势,对经济发展较为缓慢的国家进行文化层面上的同化,并为这样行为杜撰了“文化中心论”“历史进化论”等相关学说佐证其合理性,从而借此构建文化帝国。与此同时,伴随着社会学和人类学的发展,通过调查研究,学者深刻剖析了文化产生的条件,发现了文化自身的特殊性,证明“文化中心主义”的错误。以博厄斯等人类学家为代表构建了“文化相对主义”,以用来抵抗“文化中心主义”。在人类历史的进程之中,“文化相对主义”为保留文化的多样性,带来十分积极的影响。但随着现代化进程加快,“文化相对主义”本身具有的价值缺陷也逐渐暴露出来,因此,如何解决“文化相对主义”中的价值困境成为目前亟待解决的问题。

信息资源管理理论下综合英语教学反思与超越

为适应学生的学习需要和发展,必须在高校综合英语教学中利用信息技术完善资源整合,为学生创造良好的英语学习环境,以促进其综合素质的提高。信息资源管理理论是一种关于信息管理的应用原理,将其作为综合英语教学的辅助性工具,能使教学管理资源共享得到进一步提高,打破学生之间的孤岛效应,并通过资源共享来提高高校英语教学管理水平,从而全面提高英语教育质量。

斜弯T梁桥横隔板布置力学性能研究

目前,针对斜弯T梁桥横隔板布置的研究较少,为研究横隔板布置对桥梁力学性能的影响、优化斜弯桥横隔板布置,文章结合桥梁博士梁格模型,对不同横隔板道数、不同跨径及不同中隔板布置方式的正交、斜交桥梁开展受力分析。研究表明,25 m跨T梁布置2道隔板为宜,30 m、40 m跨T梁布置3道中横隔板为宜;对于正交、斜交桥梁,采用中隔板正布方式,受力性能均优于采用中隔板斜布。

公路沥青路面弯沉与耐久性关系探讨

公路沥青路面的性能不仅决定其使用寿命,对行车安全的影响也不容忽视。文章分析了沥青路面弯沉机制与影响因素,以及沥青路面耐久性评价与影响因素,基于实验研究与理论分析相结合的方法,以弯沉与耐久性的内在关联为重点,对沥青路面的耐久性进行了全方位考核。研究结果表明,柏油路面过度弯沉严重影响路面使用寿命和行车安全,弯道沉降值每增加1 mm,路面耐久性指标下降约2.5%。

不良地质条件下建筑物桩基础检测方法及结果分析

文章以实际工程为依托,详细介绍了包括静载试验法、应变反射波法、声波透射法与钻芯法共计四种桩基检测方法的原理、判别依据及优劣,并通过工程实例对各检测方法进行实际应用,结果表明:静载试验下,典型桩的Q-S曲线在整个试验检测阶段中斜率较为平缓,未出现明显突增;在S-lgt曲线中,桩体变形随荷载的增大而增大,且同一荷载级数下,桩体变形随时间的增长而缓慢增大;低应变反射波检测下部分桩体实测曲线平均波速为3 833.5 m/s,整体波形较为平稳,没有突变,表明桩身并未出现明显的缺陷,桩体为完整或基本完整桩。

化学发光法测定巯嘌呤的含量

在流动注射系统中，利用巯嘌呤在碱性Luminol-K3Fe（CN）4化学发光体系中发光信号强的特点，建立了一种测定巯嘌呤的新方法。在优化条件下，方法的线性范围是1．02×10^-7～1．02×10^-9mol·L^-1，回归方程是y=36．315c＋140．72（Y是相对发光强度，c是巯嘌呤浓度与10^-8mol·L^-1的乘积），相关系数是0．9982，检出限（S／N=3）是6．33X10^-10mol·L^-1，RSD为3．54％（ci=2．0X10^-9mol·L^-1，n=12）。该法用于合成样品的测定，简便、灵敏、快速，结果令人满意。文章简要地探讨了巯嘌呤在碱性Luminol-K3Fe（CN）6化学发光体系中的化学发光机理：在反应过程中，产生大量的过氧自由基和羟基自由基，自由基与鲁米诺反应，形成激发态的鲁米诺分子，鲁米诺分子由激发态回到基态产生化学发光现象。

流动注射分光光度法测定海水中痕量锌——5-Br-PADAP-Zn^(2+)配合物法

在pH8.0的硼砂-硼酸缓冲溶液中,在非离子表面活性剂OP存在下,Zn2+与5-Br-PADAP生成红色络合物,据此建立了流动注射分光光度法测定海水中痕量锌的分析方法。测定结果表明本方法的灵敏度、准确度都较高,且流路简单,操作方便,抗干扰好,在10～400μg/L浓度范围内具有良好的线性关系,相关系数为0.9991,检出限为2.4μg/L,回收率为99.4%～104.2%,用10μg/L标准溶液进样的相对标准偏差为2.12%(n=11)。加入掩蔽剂后该方法用于实际海水样品分析,结果让人满意。

流动注射化学发光法检测剑麻皂苷元

采用Luminol-K3 Fe（CN）6化学发光体系,建立流动注射化学发光法检测从剑麻残渣和麻膏中分离得到的皂苷元.当用0．1 mol·L-1 NaOH 作为溶剂配制鲁米诺浓度为1．0×10-5 mol·L-1,用去离子水作为溶剂配制K3Fe（CN）6浓度为1．6×10-5mol·L-1,主副蠕动泵转数均在50~80 r·min-1时,用无水乙醇溶解的皂苷元流入体系具有最强的化学发光.在该条件下,剑麻皂苷元最低检出限为3．0×10-3 mg·mL-1,标准曲线相关系数为0．9996,平均回收率为98．5％,相对标准偏差在2．9％~4．2％之间.同时与 HPLC检测方法对样品检测结果进行了比较.

参附注射液联合肉桂防治奥沙利铂神经毒性疗效观察

目的:观察参附注射液联合肉桂防治奥沙利铂神经毒性的疗效。方法:73例恶性肿瘤患者随机分为对照组与治疗组,对照组仅用含奥沙利铂的化疗方案;治疗组在对照组化疗基础上,在化疗前均采用参附注射液40ml～60ml静脉滴注7d～10d+肉桂3g水煎代茶饮。结果:治疗组与对照组的神经毒性总发生率分别为13.5%、55.6%,有显著性差异(P<0.001)。结论:参附注射液联合肉桂能降低奥沙利铂神经毒性发生率。

流动注射-化学发光法快速灵敏测定孔雀石绿

以孔雀石绿对鲁米诺-牛血清白蛋白体系化学发光强度显著的猝灭作用为基础,结合流动注射技术,建立了快速灵敏测定纳克级孔雀石绿的新方法。实验发现体系化学发光信号减小值与孔雀石绿浓度的对数值呈良好的线性关系,测定的线性范围为0.03~1000ng/mL,检出限为0.01ng/mL(3σ)。流速为2.0mL/min时,完成一次测定仅需30s,采样频率120次/h。本方法成功用于环境水样中孔雀石绿含量的测定,回收率为97.1%~103.8%,相对标准偏差小于4.0%(n=7)。

基于模板匹配和差影处理的票据图象检测

票据图象的准确分类检测是实现金融票据自动处理的基础。论文应用经典的数字图象处理理论,提出了一种新的多类别票据图象检测方法,即在原始票据图象利用模板匹配先得到相应的有效图象,再运用差影技术对滤波去噪后的有效图象进行模板存在与否的检测。实际的票据分类处理实验结果证实了所提出的方法的有效性。