Enhanced permeability prediction in porous media using particle swarm optimization with multi-source integration

Accurately and efficiently predicting the permeability of porous media is essential for addressing a wide range of hydrogeological issues.However,the complexity of porous media often limits the effectiveness of individual prediction methods.This study introduces a novel Particle Swarm Optimization-based Permeability Integrated Prediction model(PSO-PIP),which incorporates a particle swarm optimization algorithm enhanced with dy-namic clustering and adaptive parameter tuning(KGPSO).The model integrates multi-source data from the Lattice Boltzmann Method(LBM),Pore Network Modeling(PNM),and Finite Difference Method(FDM).By assigning optimal weight coefficients to the outputs of these methods,the model minimizes deviations from actual values and enhances permeability prediction performance.Initially,the computational performances of the LBM,PNM,and FDM are comparatively analyzed on datasets consisting of sphere packings and real rock samples.It is observed that these methods exhibit computational biases in certain permeability ranges.The PSOPIP model is proposed to combine the strengths of each computational approach and mitigate their limitations.The PSO-PIP model consistently produces predictions that are highly congruent with actual permeability values across all prediction intervals,significantly enhancing prediction accuracy.The outcomes of this study provide a new tool and perspective for the comprehensive,rapid,and accurate prediction of permeability in porous media.

A stable implicit nodal integration-based particle finite element method(N-PFEM)for modelling saturated soil dynamics

In this study,we present a novel nodal integration-based particle finite element method(N-PFEM)designed for the dynamic analysis of saturated soils.Our approach incorporates the nodal integration technique into a generalised Hellinger-Reissner(HR)variational principle,creating an implicit PFEM formulation.To mitigate the volumetric locking issue in low-order elements,we employ a node-based strain smoothing technique.By discretising field variables at the centre of smoothing cells,we achieve nodal integration over cells,eliminating the need for sophisticated mapping operations after re-meshing in the PFEM.We express the discretised governing equations as a min-max optimisation problem,which is further reformulated as a standard second-order cone programming(SOCP)problem.Stresses,pore water pressure,and displacements are simultaneously determined using the advanced primal-dual interior point method.Consequently,our numerical model offers improved accuracy for stresses and pore water pressure compared to the displacement-based PFEM formulation.Numerical experiments demonstrate that the N-PFEM efficiently captures both transient and long-term hydro-mechanical behaviour of saturated soils with high accuracy,obviating the need for stabilisation or regularisation techniques commonly employed in other nodal integration-based PFEM approaches.This work holds significant implications for the development of robust and accurate numerical tools for studying saturated soil dynamics.

Service Customized Space-Air-Ground Integrated Network for Immersive Media: Architecture, Key Technologies, and Prospects

The space-air-ground integrated network(SAGIN) is regarded as the key approach to realize global coverage in future network and it reaches broad access for various services. Being the new paradigm of service, immersive media(IM) has attracted users’ attention for its virtualization, but it poses challenges to network performance, e.g. bandwidth, rate, latency. However, the SAGIN has limitations in supporting IM services, such as 4 K/8 K video, virtual reality, and interactive games. In this paper, a novel service customized SAGIN architecture for IM applications(SAG-IM) is proposed, which achieves content interactive and real-time communication among terminal users. State-of-the-art research is investigated in detail to facilitate the combination of SAGIN and service customized technology, which provides endto-end differentiated services for users. Besides, the functional components of SAG-IM contain the infrastructure layer, perception layer, intelligence layer, and application layer, reaching the capabilities of intelligent management of the network. Moreover, to provide IM content with ultra-high-definition and high frame rate for the optimal user experience, the promising key technologies on intelligent routing and delivery are discussed. The performance evaluation shows the superiority of SAG-IM in supporting IM service.Finally, the prospects in practical application are high-lighted.

A Solution of the Burger’s Equation Arising in the Longitudinal Dispersion Phenomenon in Fluid Flow through Porous Media by Mixture of New Integral Transform and Homotopy Perturbation Method

The main aim of the paper is to examine the concentration of the longitudinal dispersion phenomenon arising in fluid flow through porous media. These phenomenon yields a partial differential equation namely Burger’s equation, which is solved by mixture of the new integral transform and the homotopy perturbation method under suitable conditions and the standard assumption. This method provides an analytical approximation in a rapidly convergent sequence with in exclusive manner computed terms. Its rapid convergence shows that the method is trustworthy and introduces a significant improvement in solving nonlinear partial differential equations over existing methods. It is concluded that the behaviour of concentration in longitudinal dispersion phenomenon is decreases as distance x is increasing with fixed time t > 0 and slightly increases with time t.

Media Stakeholders＇ Perspectives and Policy Integrity

Objectivity in media practice is the journalist＇s ability to give every segment of the audience an equal right to be heard and seen, to read or to react. Disappointingly, that objectivity does not extend to the policies that regulate that practice. This concern is demonstrated in the incoherence and lack of judgment that exist in media policy domains where journalism is confined to a deal between only the journalist and his or her audience. This linear process conspicuously excludes those crucial stakeholders whose interests tremendously affect the destiny of journalists and their audience. The development has adversely affected policy rationality in some developing countries as media policies lack interactive planning, robust policy discourses and stakeholder dialogue, thereby undermining policy integrity. This paper attempts to argue that for a media policy to be truly in public interest, formulators have to expand their horizon beyond government, journalists and their audience to other stakeholders. Newsmakers, who fall into a category of such stakeholders, can make the journalist＇s pen run dry if they go on strike! Others include media users, media owners and media scholars. The paper recommends the process of harnessing the perspectives of these stakeholders in a manner that can make analysts consider drafting a fresh all-encompassing media policy for developing countries, especially those of Africa.

On the Feasibility of the Chinese County-Level Convergence Media Centers in Participating in International Communication:Evidence from CDHT’s First-Hand Communication Practice

With the advent of new technologies,China is faced with the practical need to enhance its international communication capacity and address reforms in the modes,content,and channels of international communication.Therefore,more efforts should be made to further enrich the participants in international communication by optimizing China’s four-level journalism communication system and crafting a“great external publicity pattern.”Guiding and promoting county-level convergence media centers to participate in international communication is conducive to promoting the building of a vertical international communication system and a multi-level integrated communication matrix and facilitating the resource alignment and information sharing between domestic and international communication.In practice,some county-level convergence media centers in China have achieved certain results in international communication.A good example is the Chengdu Hi-tech Industrial Development Zone(CDHT),a pioneer in the reform of Chinese county-level convergence media.Therefore,this paper has used CDHT as an example to discuss the reality and basic conditions for Chinese county-level convergence media centers to participate in international communication and put forward general paths for county-level convergence media centers to engage in international communication.

On the Integrated Model of Music in the Creation and Dissemination of New Media Era

Into the era of new media art, music develops toward a more comprehensive, more novel direction. Music is no longer pure spirit product, and becomes a resource of information society. This paper analyzes the new media era music creation mode change, as a result of this mode of music dissemination of new characteristics were summarized, illustrate the influence of new media tools generated for music culture, find some means of basis for the development of music art in the new environment. With the development of computer and the popularization of the Internet, everyone can become the creator and disseminator of music. At the same time of the concept and the mode of creation have changed, music dissemination way is to find a broader approach. In numerous new media era music works, those who conform to the times and the nature of music works will also become a classic in the information after the bubble.

Evaluation of the Clinical Efficacy of Qingqiao Capsule (清窍胶囊) in Treating Patients with Secretory Otitis Media

Objective： To observe the clinical efficacy of Qingqiao Capsule （清窍胶囊, QQC） in treating patients with secretory otitis media （SOM）. Methods： A total of 90 patients were randomly assigned into the treated group （n：45） and the control group （n=45）. Patients in the treated group were administrated with QQC, 5 capsules each time, 3 times a day for totally 10-14 days, and those in the control group were given per os cefaclor capsules 0.5g each time for adult, 3 times a day, or 20mg/（kg·d） for children, for 10-14 days. The therapeutic efficacy of treatment on the patients was observed and compared after treatment and followed up for 3-6 months. Results： （1） The clinical efficacy in the treated group was superior to that in the control group with significant statistical difference （P〈0.01）; （2） Comparison of the efficacies in patients of three different TCM syndrome types （the external pathogenic wind invasion caused auditory orifice stuffiness type, the Gan-Dan damp-heat steaming up auditory orifice type and the Pi-deficiency dysfunction induced dirty dampness blocking ear type） showed no statistically significant difference（P〉0.05）; （3） The vanishing rate and time needed of the main symptoms and signs in the treated group were superior to those in the control group on ear muffle, tinnitus, hearing impairment, hydrotypanum, pure tone threshold and abnormal tongue figure, and the difference was statistically significant （P〈0.05 or P〈0.01）, only those of earache, otopiesis and abnornal pulse figure were insignificantly different between the two groups （P〉0.05）. Conclusion： QQC is an effective Chinese composite medicine on patients with SOM, and shows no obvious adverse reaction.

Reconstruction of Complex Materials by Integral Geometric Measures

The goal of much research in computational materials science is to quantify necessary morphological information and then to develop stochastic models which both accurately reflect the material morphology and allow one to estimate macroscopic physical properties. A novel method of characterizing the morphology of disordered systems is presented based on the evolution of a family of integral geometric measures during erosion and dilation operations. The method is used to determine the accuracy of model reconstructions of random systems. It is shown that the use of erosion/dilation operations on the original image leads to a more accurate discrimination of morphology than previous methods.

The development trend of paper-based media under the media convergence trend

The emergence of media convergence have so huge impact on paper-based media that paper-based media no longer has a monopoly. Some people assert that paper-based media will come to an end. However, the author believes that the paper media will not come to an end under the media convergence trend. It will develop parallel with media integration. The reason why the author has this view is that, on one hand, paper-based media has its unique physical characteristics. In the real world, paper media brought us the aesthetic experience by ＂five senses＂ . It cannot be replaced by the media convergence. The paper media will also make survival steering dimension; on the other hand, cultural heritage of the paper media make itself a unique appreciation of the value and not transcendent. Therefore, the paper media in the media convergence trend will continue to exist and turned to be ＂concept book＂ that admiring is the main part and reading supplemented.

Analysis on the Education Mechanism of the"Learning Power"Platform from the Perspective of Media Convergence

As a media learning platform,the"Learning Power55 platform integrates the advantages of the internet,big data,and new media.Through the supply of massive explicit and implicit learning resources as well as the construction of the interactive space of"Learning Power/5 it fully embodies the education mechanism of moral education.Specifically,it is reflected in the distinctive political position and the education goal mechanism of"moral education,55 the education operation mechanism of"explicit and implicit unity,"the learning mechanism of'"autonomy and cooperation integTation,"and the feedback incentive mechanism of"gamification."The organic combination and interactive operation of these four mechanisms form a collaborative education mechanism system of goal orientation,education operation,learning process,and feedback incentive.

县级融媒体中心深度发展的几个关键问题

县级融媒体中心是地方党委政府“治县理政”的抓手与平台,作为一种战略安排,融媒体中心有其技术、经济、政治与文化时代背景,数字信息技术不断革新下的挑战与机遇,使得县级传统媒体必然转型为融媒体中心,因而其生产者构成、职能部门构成、渠道构成、产品构成、受众构成、社会构成等必然有新的规律和特点,但本质上依然是一种新闻机构。这就要求我们从宏观、中观、微观等层面来把握这种战略安排,对融媒体中心深度发展的逻辑遵循、核心构成、地方价值、舆论引导和文化建设的理解,就成为管理者、研究者和从业者所有工作的重中之重。

再思平台:概念旅行与范畴拓展——兼论平台研究的新维度

Web2.0技术的发展,推动了平台概念的兴起,国外各大互联网公司纷纷以平台自居,将平台设计成一个开放的、平等的表达工具,刻意回避了平台的商业属性以及其与政治的关系,引发了西方学界对于平台公司的强烈批判。在国内,随着“三网融合”进程的开启,新闻媒体纷纷开始平台化建设的实践,并生发了一系列与平台相关的概念丛,在这些新概念中,既有对于平台概念旅行的解读,也有平台相关理论的发展,但大部分研究是在媒介融合的框架下进行的。近年来,随着大众传播范式向数字传播范式转型,平台研究的范畴扩大,虽然给平台研究带来了新的议题,但其多将平台约化为具体的研究对象。随着平台社会的到来,平台并不是一种纯客观的对象,而是成为一种全新的生活环境并影响着人们的生存方式。

乡村振兴背景下融媒体参与乡村治理研究

随着社会发展,乡村治理已经成为重要的议题。在网络时代,如何通过融媒体技术助力乡村治理现代化,是当前乡村治理所面临的重要问题。通过融媒体参与乡村治理的优势,针对当前融媒体参与乡村治理遇到的问题,从强化理论武装,把握传播规律;围绕重点领域,加强资源整合;保障平衡发展,创新结合传统;积极统筹布局,注重分类实施四个方面提出应对措施。

融媒体时代广播剧对乡村文化的传承与发展--以丝路之声系列广播剧为例

21世纪以来,随着市场化的推进、传媒技术的发展及互联网的普及,特别是听觉文化研究的兴起,以声音传播为物质载体的广播剧借助各种社交媒体及网络音频客户端快速融入普通百姓的精神消费中,在文化宣传、价值引领、道德塑造、审美教育等方面发挥着积极的作用。特别是在乡村文化振兴过程中,广播剧利用其声音叙事的特点,占领了乡村文化的高地。首先,丝路之声出品的系列广播剧,或取材于百姓身边的人或事,或讲述非遗民俗文化,或讴歌红色革命精神,深受百姓喜爱,大大拓展了乡村的听觉文化空间;其次,广播剧将传统乡土价值与时代核心价值观融入故事和人物形象中,激发了广大民众向善向美向真的价值追求,有效地发挥了社会主义核心价值观在乡村文化振兴中的价值引领作用;最后,广播剧借助传统的声音叙事优势,以声塑形、以声传情、以声铸魂,引导民众在艺术的审美熏陶中体悟生活的真善美,提升其艺术鉴赏水平和精神修养。

智媒时代应用型高校导播课程教学改革策略研究

智媒时代对传媒类人才培养提出了更高的要求。导播课程作为应用型高校传媒类专业的核心课程,应本着“以学生为中心”的教学理念,从教学模式、教育场景、课程建设等方面切入,紧跟行业一线,鼓励自主学习,推动产教融合,体现地域特色,着力培养掌握全媒体视听节目制作能力的复合型、应用型人才,与行业发展、岗位需求同频共振。

场域理论视角下高校网络舆情治理的防范困境与实践进路

作为意识形态工作的前沿阵地,高校肩负着培育时代新人的重大使命,是国内外各种社会思潮交锋和与西方敌对势力争夺青年一代的重要场所。在场域理论视角下,针对网络舆情治理面临的场域壁垒下的治理角色转化、资本制约下的治理权力更迭和惯习固化下的治理手段改变等危机风险,高校需在初始传播阶段建立健全舆情监测机制,构建动因性应对机制;在爆发扩散阶段强化精准研判控制局势,构建资源性保障机制;在逐渐消退阶段加强社会各界沟通协作,构建进路性导引机制。

双重孔隙流体饱和介质弹性波散射二维IBIEM模拟

基于平面波势函数,采用间接边界积分方程法(indirect boundary integral equation method, IBIEM)研究了双孔隙流体饱和介质中弹性波入射下二维孔洞的散射特性。推导得到了双孔隙介质中全空间二维线源动力格林函数,并给出了各散射波的位移场和应力场。在数值精度验证的基础上,以双孔隙二维饱和全空间中孔洞为例,解决了平面P、SV波入射下的地震波散射问题。数值结果表明:双重孔隙介质中的位移幅值、环向应力幅值、孔隙压力变化规律与不同入射波形,入射频率,孔隙率和边界排水条件密切相关,位移幅值在低频(无量纲频率η≤2)入射时出现峰值。环向应力幅值与干土条件相比更为复杂,基质孔压与裂缝孔压的存在增大了双重孔隙饱和介质的能量效应,总体震动趋势大于干土条件,环向应力放大可达62%。

融媒体传播下某肿瘤专科医院网站建设的实践与思考

在当今的数字化时代,医院门户网站已成为医院与患者之间的重要桥梁。门户网站的设计、开发、维护和升级对于医院的形象塑造和患者的就诊体验具有重大影响。文章结合浙江某肿瘤专科医院官网近年来实际运营经验,阐述其在患者视角下的开发理念、设计思路与实践方案,对网站访问数据进行分析讨论。数据证实,改版后的网站流量稳步上升,以手机为代表的移动类设备已逐步呈现快速上升的趋势,这与近年来移动互联网的迅猛发展是同步的。其经验表明医院网站建设应以患者视角,结合融媒体传播理论,走集群化、移动化和大数据之路。

全媒体传播体系下出版深度融合发展研究

在全媒体传播体系建构纳入国家战略规划背景下,处于数字化浪潮中的中国出版业面临产销技术、业务模式、组织机构等多方面的冲突与转型。在完成从数字出版到融合出版的过渡后,出版深度融合成为当下我国出版业面向未来生态建设的全新趋势。本课题紧密结合数字化环境下的新出版传播体系,以全媒体传播视角审视出版产业的深度融合问题,探讨出版融合发展的理论框架,以传统出版转型为立足点,构建多维度、系统化、针对性的全媒体传播体系下出版深度融合发展的实践路径和生态保障体系。