The Validity of the Thermohydrogravidynamic Theory Concerning the Predicted Dates of the Maximal Temporal Intensifications of the Global Seismotectonic Processes of the Earth during the Range 2020 - 2023 AD

We present (on the 13th International Conference on Geology and Geophysics) the convincing evidence that the strongest earthquakes (according to the U.S. Geological Survey) of the Earth (during the range 2020 - 2023 AD) occurred near the predicted (calculated in advance based on the global prediction thermohydrogravidynamic principles determining the maximal temporal intensifications of the global seismotectonic, volcanic, climatic and magnetic processes of the Earth) dates 2020.016666667 AD (Simonenko, 2020), 2021.1 AD (Simonenko, 2019, 2020), 2022.18333333 AD (Simonenko, 2021), 2023.26666666 AD (Simonenko, 2022) and 2020.55 AD, 2021.65 AD (Simonenko, 2019, 2021), 2022.716666666 AD (Simonenko, 2022), respectively, corresponding to the local maximal and to the local minimal, respectively, combined planetary and solar integral energy gravitational influences on the internal rigid core of the Earth. We present the short-term thermohydrogravidynamic technology (based on the generalized differential formulation of the first law of thermodynamics and the first global prediction thermohydrogravidynamic principle) for evaluation of the maximal magnitude of the strongest (during the March, 2023 AD) earthquake of the Earth occurred on March 16, 2023 AD (according to the U.S. Geological Survey). .

Global satisfactory control for nonlinear integrator processes with long delay

Integrator processes with long delay are difficult to control. Nonlinear characteristics of actuators make the control problem more challenging. A technique is proposed in this paper for global satisfactory control （GSC） of such processes with relay-type nonlinearity. An oscillatory control signal is injected into the nonlinear process; the amplitude and frequency of the oscillatory signal are designed to linearise the nonlinear process in the sense of harmonic analysis; and a state feedback controller is configured to implement GSC over the linearised process. An illustrative example is given to demonstrate the effectiveness of

The Global Stability Analysis of a Mathematical Cellular Model of Hepatitis C Virus Infection with Non-Cytolytic Process

The aim of this work is to analyse the global dynamics of an extended mathematical model of Hepatitis C virus (HCV) infection in vivo with cellular proliferation, spontaneous cure and hepatocyte homeostasis. We firstly prove the existence of local and global solutions of the model and establish some properties of this solution as positivity and asymptotic behaviour. Secondly we show, by the construction of appropriate Lyapunov functions, that the uninfected equilibrium and the unique infected equilibrium of the mathematical model of HCV are globally asymptotically stable respectively when the threshold number and when .

Estimation on Global Reaction Heat for the Aromatization Process of Liquefied Petroleum Gas

The reaction heat effect analysis for the aromatization process of Liquefied Petroleum Gas (LPG) was completed in this paper. In order to characterize this complex reaction system, one set of independent reactions was determined by means of atomic coefficient matrix method. Based on reaction thermodynamic and stoichiometric knowledge, the heat effect, Gibbs free energy change and equilibrium constant for each independent reaction was calculated for the specified conditions. Under these conditions, based on the initial and final composition data from LPG aromatization experiments, the actual extent of reaction for each independent reaction was determined. Furthermore, the global reaction heat and adiabatic temperature rise of LPG aromatization reaction system could be estimated. This work would provide a theoretical guidance for the design and scale-up of reactor for LPG aromatization process, as well as for the selection of proper operating conditions.

Fluid Dynamic Response of the Russia Seismically Differing Regions to the Global Geodynamics Processes

The results of the spectral-correlation analysis of the fluid-dynamic (radon and hydrogen) data monitoring obtained in the seismically active region—on Kamchatka and in conditions of Russian platform where compared to the results of the laser-deformometer measurements obtained on Caucasus. It allowed identify spectral components of the measured parameters, first of all, in the area of the lunar-solar tides. This identification have demonstrated the identical reaction of the mountain and platform regions to the global geodeformation processes of the tidal level and have shown the possibility of the measuring parameters response to the catastrophic events preparation processes. Really the prognostic effects in the investigated fields where indicated in periods of preparation and realization of the catastrophic earthquakes in Indian Ocean on December, 26, 2004 and on March, 28, 2005.

GLOBAL SUBSTORM PROCESSES IN GEOSPACE AND FRONTIERS IN SUBSTORM RESEARCH

This paper discusses the problems we confront in the study of magnetospheric substorms. This includes the global processes of magnetospheric substorms, the origin of the southern-northern component of interplanetary magnetic field, quantitative effects of the interplanetary conditions, driving processes of the solar wind, location of the triggering of the expansion phase, and relationship between magnetospheric storms and substorms. Moreover, the research directions in the future have also been discussed.

Status of UnDifferenced and Uncombined GNSS Data Processing Activities in China

With the continued development of multiple Global Navigation Satellite Systems(GNSS)and the emergence of various frequencies,UnDifferenced and UnCombined(UDUC)data processing has become an increasingly attractive option.In this contribution,we provide an overview of the current status of UDUC GNSS data processing activities in China.These activities encompass the formulation of Precise Point Positioning(PPP)models and PPP-Real-Time Kinematic(PPP-RTK)models for processing single-station and multi-station GNSS data,respectively.Regarding single-station data processing,we discuss the advancements in PPP models,particularly the extension from a single system to multiple systems,and from dual frequencies to single and multiple frequencies.Additionally,we introduce the modified PPP model,which accounts for the time variation of receiver code biases,a departure from the conventional PPP model that typically assumes these biases to be time-constant.In the realm of multi-station PPP-RTK data processing,we introduce the ionosphere-weighted PPP-RTK model,which enhances the model strength by considering the spatial correlation of ionospheric delays.We also review the phase-only PPP-RTK model,designed to mitigate the impact of unmodelled code-related errors.Furthermore,we explore GLONASS PPP-RTK,achieved through the application of the integer-estimable model.For large-scale network data processing,we introduce the all-in-view PPP-RTK model,which alleviates the strict common-view requirement at all receivers.Moreover,we present the decentralized PPP-RTK data processing strategy,designed to improve computational efficiency.Overall,this work highlights the various advancements in UDUC GNSS data processing,providing insights into the state-of-the-art techniques employed in China to achieve precise GNSS applications.

准噶尔盆地复杂山地区分方位地震处理关键技术及应用

准噶尔盆地南缘山前冲断带是我国西部重要的油气勘探领域,构造复杂,逆冲断裂发育特征为油气勘探带来巨大挑战。随“两宽一高”资料的普及,全方位处理模式愈发难以满足深层精细勘探的需求。本文以安集海背斜为例,对下组合方位各向异性问题,提出一套完整的分方位处理流程,包括分方位速度分析、分方位全局寻优剩余静校正、OVT域叠前时间偏移及加权叠加技术。这些技术的应用有效地改善了该地区断点断裂不清晰和构造样式存在多解性的问题,具一定生产推广价值。

建构主义视域下全球体育治理制度建构的过程逻辑研究

从建构主义视角提出全球体育治理制度建构的过程分析框架。研究发现:在全球体育治理制度建构过程中,领导型制度倡议者理念偏差、观念性共识凝聚梗阻、战略竞争思维主导国际体育制度改革、制度霸权干扰观念制度化进程是造成体育制度供给失衡、体育制度黏性、制度非中性和制度碎片化等制度建构结果不理想的根源。从制度建构过程中溯源制度建构负向结果的成因——观念障碍,提出全球体育治理制度优化的可行路径。

空频抗干扰对GNSS载波相位测量的影响

对于全球导航卫星系统(GNSS)的抗干扰,最有效的是采用自适应天线阵技术,但这种抗干扰处理会引入与信号入射方向相关的载波相位测量偏差,限制了其在高精确度测量领域的应用。为减小抗干扰处理的偏差,引入测量偏差及其分析方法,建立仿真模型,并搭建软件接收机进行实验。结果表明,在不增加额外约束的条件下,采用空频最小方差无畸变响应算法实现空频抗干扰处理器,不会引入载波相位测量偏差,非常适用于对抗干扰性能和测量精确度均有苛刻要求的场合。

全球人工智能治理:多元化进程与竞争性图景

人工智能技术的快速发展对国际体系产生了重要影响。国家维度可以成为分析和展示当前全球人工智能治理进程的重要视角。从国家维度展开全球人工智能治理全景图,将会呈现出以三条核心路径为基本架构的多元化进程,分别是美国作为唯一代表的权力目标导向路径,以维护智能领域的霸权为基本特征;以欧盟等为代表的安全导向路径,其突出特征是监管优先;以中日等国为代表的发展导向路径,将治理工具与发展战略结合,希望实现技术和产业的赶超。在无政府状态的制约下,多元化与竞争性将成为国家维度下全球人工智能治理的主要特征。

广告景别呈现方式会影响广告态度吗——基于整体优先原则的实证研究

随着数字经济时代的到来,企业间竞争愈发激烈,广告成为了企业争夺和占有市场的重要手段。如何有效地利用有限的广告位资源,成为了企业不容忽视的关键问题。本研究基于整体优先原则,从信息加工流畅性视角出发,探究了广告景别呈现方式对广告态度的影响。研究结果表明,相较于近景系列广告,全景系列广告会使消费者的广告态度更积极,信息加工流畅性在该影响过程中起中介作用。消费者思维模式调节了广告景别呈现方式对信息加工流畅性和广告态度的影响,当消费者处于整体(局部)加工思维模式下,相较于近景(全景)系列广告,全景(近景)系列广告使消费者信息加工更加流畅,广告态度更积极。本研究丰富了视觉线索在营销领域中的应用,研究结论对于企业制定和选择广告策略具有一定的实践意义。

充水式潜水电机温度场仿真分析

为了避免充水式潜水电机在运行过程中局部过热导致绝缘失效,造成匝间短路故障的问题,提高电机运行的可靠性,以一台500k W充水式潜水电机为例,搭建了充水式潜水电机包括冷却器、外部水道、吸水罩在内的三维全域温度场仿真模型。模型对定子槽内部分进行了简化的同时考虑了定子槽内冷却水的流通,进一步提高了温度场仿真的精度。最后,对充水式潜水电机内外循环散热过程进行了仿真分析,并通过搭建充水式潜水电机试验平台对温度场仿真结果进行了验证。

基于近端策略优化模板更新的实时目标跟踪方法

基于孪生网络的目标跟踪算法往往采用第一帧的外观特征作为固定模板,难以应对目标外观剧烈变化等问题。为此,所提算法在孪生网络的基础上,引入深度强化学习,将模板更新问题建模为马尔可夫决策过程,采用近端策略优化算法进行优化,减少因目标外观变化带来的误差积累。针对孪生网络跟踪算法搜索域太小,无法全局搜索目标的问题,引入全局检测算法,找回丢失的目标。所提跟踪算法能够自适应更新模板和全局检测丢失的目标,在OTB数据集和GOT-10k数据集上进行测试,实验结果表明,该方法较代表性方法,具有实时性强和准确率高的优点,能够很好应对目标外观形变以及目标丢失。

混合策略的沙猫算法求解化工动态优化问题

化工动态优化问题的求解是实现化工过程自动控制的基础,对环保与经济效益方面均有理论和实际意义。提出一种ISCSO(混合策略的沙猫优化算法)来达到反应器高效优化的目的。首先,针对SCSO(沙猫算法)种群初始化缺乏多样性、容易聚集的问题,引入Circle混沌映射初始化种群,提高多样性。其次,针对沙猫算法在迭代后期收敛速度较慢、容易陷入局部最优的问题,引入随机游走策略。同时,采用柯西变异策略扰动全局最优解,生成新解,避免陷入局部最优,增强局部搜索能力。最后将其应用于3个具有挑战性的化学动态优化工程问题上,并与其他方法进行对比分析。结果表明,改进后的算法具有更强的寻优和求解能力,证明了其有效性和优越性。

Changes in global land surface frozen ground and freeze-thaw processes during 1950-2020 based on ERA5-Land data

Frozen ground(FG)plays an important role in global and regional climates and environments through changes in land freeze-thaw processes,which have been conducted mainly in different regions.However,the changes in land surface freeze-thaw processes under climate change on a global scale are still unclear.Based on ERA5-Land hourly land skin temperature data,this study evaluated changes in the global FG area,global land surface first freeze date(FFD),last freeze date(LFD)and frost-free period(FFP)from 1950 to 2020.The results show that the current FG areas(1991-2020 mean)in the Northern Hemisphere(NH),Southern Hemisphere(SH),and globe are 68.50×10^(6),9.03×10^(6),and 77.53×10^(6)km^(2),which account for 72.4%,26.8%,and 60.4%of the exposed land(excluding glaciers,ice sheets,and water bodies)in the NH,SH and the globe,respectively;further,relative to 1951-1980,the FG area decreased by 1.9%,8.8%,and 2.8%,respectively.Seasonally FG at lower latitudes degrades to intermittently FG,and intermittently FG degrades to non-frozen ground,which caused the global FG boundary to retreat to higher latitudes from 1950 to 2020.The annual FG areas in the NH,SH,and globe all show significant decreasing trends(p<0.05)from 1950 to 2020 at-0.32×10^(6),-0.22×10^(6),and-0.54×10^(6)km^(2)per decade,respectively.The FFP prolongation in the NH is mainly influenced by LFD advance,while in the SH it is mainly controlled by FFD delay.The prolongation trend of FFP in the NH(1.34 d per decade)is larger than that in the SH(1.15 d per decade).

GNSS对流层湿延迟随机游走过程噪声时空变化特征分析

全球导航卫星系统GNSS对流层天顶湿延迟(zenith wet delay,ZWD)随机噪声不仅影响ZWD估计值大小,还会影响ZWD的趋势项变化。为揭示ZWD随机游走过程噪声(random walk process noise,RWPN)的时空变化特征,本文选取全球20个IGS(International GNSS Service)测站,基于JPL(Jet Propulsion Laboratory)、GFZ(Helmholtz-Centre Potsdam-German Research Centre for Geosciences)和CODE(Center for Orbit Determination in Europe)分析中心2010至2020年对流层产品,从不同地理位置和不同时间序列分析GNSS ZWD随机游走过程噪声的变化范围和特征;并且在扣除ZWD的趋势项和主要周期项后,进一步揭示了ZWD残差信号分量构成。结果表明:不同地理位置湿延迟RWPN具有显著差异,年均值范围在0.01~0.146 mm/√s之间,且在大气集中的中低纬地区湿延迟RWPN值较大,在大气相对稀薄的极地地区其值较小;同一测站的湿延迟RWPN具有明显的周年、半周年和季节性特征,极差值高达0.12 mm/√s以上;通过对ZWD残差值分析,发现ZWD残差信号除包含白噪声外,还具有4.8 h至2.43 d的高频信号分量。