Numerical Mathematics Theory,Methods and Applications

Aims and Scope: Numerical Mathematics:Theory, Methods and Applications (NM-TMA) publishes high-quality original research papers on the construction,analysis and application of numerical methods for solving scientific problems.Important research and expository papers devoted to the numerical solution of mathematical problems arising in all areas of science and technology are expected.The journal originates from the journal Numerical Mathematics:A Journal of Chinese Universities (English Edition).

Numerical Mathematics Theory,Methods and Applications

Aims and Scope: Numerical Mathematics:Theory, Methods and Applications(NM-TMA) publishes high-quality original

Providing Chinese scholars'solutions for international informetrics development--Review of Professor Qiu Junping's Informetrics:theory,methods and applications

Informetrics:theory,methods and applications records the research contents of informetrics in different periods,reveals the development motivation of"Three Metrics"to"Five Metrics",and is of great significance to the future trend of informetrics.This article reviews the research and development history of Professor Qiu Junping's team of"Three Metrics"and"Five Metrics",and analyzes and summarizes their academic influence and contribution to the field of international informetrics in combination with the chapter content,innovation,and practicality of the books.It can be seen that Informetrics:theory,methods and applications not only explains the complete research paradigm of informetrics,but also showed to the world the multi-dimensional breakthrough and innovation of Chinese informetrics research,and provided new ideas for the development of international informetrics.

Language Teaching Methods Supported by Relevant SLA Theories and Their Application in China's Classroom Setting

Second language acquisition theories(SLA) with a great theoretical support on language teaching have an important influence on language leaning.From the brief overview of the historical development of language teaching methods,this paper analyzes the correlation of SLA theories interacted with language teaching methods and discusses the application of language teaching methods related to SLA theories,which help teachers appropriately utilize the teaching methods in the setting of China's language learning.

Analysis of application range of simplified models for field to thermo-field to thermionic emission processes from the cathode

Electron emission plays a dominant role in plasma-cathode interactions and is a key factor in many plasma phenomena and industrial applications.It is necessary to illustrate the various electron emission mechanisms and the corresponding applicable description models to evaluate their impacts on discharge properties.In this study,detailed expressions of the simplified formulas valid for field emission to thermo-field emission to thermionic emission typically used in the numerical simulation are proposed,and the corresponding application ranges are determined in the framework of the Murphy-Good theory,which is commonly regarded as the general model and to be accurate in the full range of conditions of the validity of the theory.Dimensionless parameterization was used to evaluate the emission current density of the Murphy-Good formula,and a deviation factor was defined to obtain the application ranges for different work functions(2.5‒5 eV),cathode temperatures(300‒6000 K),and emitted electric fields(10^(5) to 10^(10) V·m^(-1)).The deviation factor was shown to be a nonmonotonic function of the three parameters.A comparative study of particle number densities in atmospheric gas discharge with a tungsten cathode was performed based on the one-dimensional implicit particle-in-cell(PIC)with the Monte Carlo collision(MCC)method according to the aforementioned application ranges.It was found that small differences in emission current density can lead to variations in the distributions of particle number density due to changes in the collisional environment.This study provides a theoretical basis for selecting emission models for subsequent numerical simulations.

Riemann Hypothesis, Catholic Information and Potential of Events with New Techniques for Financial and Other Applications

In this research we are going to define two new concepts: a) “The Potential of Events” (EP) and b) “The Catholic Information” (CI). The term CI derives from the ancient Greek language and declares all the Catholic (general) Logical Propositions () which will true for every element of a set A. We will study the Riemann Hypothesis in two stages: a) By using the EP we will prove that the distribution of events e (even) and o (odd) of Square Free Numbers (SFN) on the axis Ax(N) of naturals is Heads-Tails (H-T) type. b) By using the CI we will explain the way that the distribution of prime numbers can be correlated with the non-trivial zeros of the function ζ(s) of Riemann. The Introduction and the Chapter 2 are necessary for understanding the solution. In the Chapter 3 we will present a simple method of forecasting in many very useful applications (e.g. financial, technological, medical, social, etc) developing a generalization of this new, proven here, theory which we finally apply to the solution of RH. The following Introduction as well the Results with the Discussion at the end shed light about the possibility of the proof of all the above. The article consists of 9 chapters that are numbered by 1, 2, …, 9.

基于应用现代化的铁路信息系统统型方法研究

针对铁路信息系统多小散、开发主体多、运营维护困难等诸多难题,研究铁路信息系统统型总体思路及实施策略。文章分析了铁路信息系统建设现状,提出铁路信息系统统型的具体需求;基于应用现代化理论,提出铁路信息系统统型总体思路,分别从管理层面、技术层面、业务层面提出具体实施方案,其中,在业务层面,提出了通用化统型、系列化统型、模块化统型等3种方法;以未来3~5年为周期,规划统型实施策略,同时提出保障措施。研究结果可为铁路信息系统统型提供系统性的理论参考及技术支撑。

应用型本科院校思政课实践教学探析--以中国矿业大学徐海学院为例

在思政课教学过程中,实践教学环节既是一个重要的内容,也是一个崭新的课题。为更好地探索应用型本科思政课实践教学环节的实施,该文以中国矿业大学徐海学院为例,结合四门具体思政课程(思想道德与法治、中国近现代史纲要、马克思主义基本原理、毛泽东思想和中国特色社会主义理论体系概论)的普遍性与特殊性,对实践教学目标、实践教学方式、实践教学总结三个方面进行探讨。

清热解毒法在恶性肿瘤治疗中的临床应用

现代中医肿瘤学的癌毒病机理论提出,清热解毒法为治疗恶性肿瘤的抗癌解毒八法之一,可在恶性肿瘤治疗中广泛应用。清热解毒法治疗恶性肿瘤的临床应用需基于辨证、辨病、分期、辨体相结合的综合辨治模式。若肿瘤患者热毒证候明显,辨证应用清热解毒法无疑;若热毒不明显或无证可辨,结合现代肿瘤的病理本质特征,在不违背整体遣方用药原则下,可辨病应用清热解毒法以发挥抗癌祛毒之效。清热解毒法本质属于攻法,其辨证或辨病应用均应以患者正气强弱为考量因素,同时还需结合患者的肿瘤分期、体质因素等。辨证应用强调了清热解毒法运用于肿瘤热毒证的普遍性,辨病应用突破了清热解毒法仅用于宏观热毒证的局限性,分期应用体现了清热解毒法阶段性使用的精准性,辨体应用则体现了清热解毒法应用过程中的个体性。辨证、辨病、分期、辨体4种辨治模式当相互参照、综合运用,方可取得显效。治疗肿瘤常用的清热解毒药物有白花蛇舌草、半枝莲、重楼、天葵子、漏芦、山豆根等。

基于润湿理论的多功能超滑表面研究进展

超滑表面(SLIPS)是一种通过向具有微纳米多孔结构的衬底注入低表面能液体而形成的全憎表面,能够排斥多种液体,具有液滴滑动阻力小、力学性能好、耐高温高压、自清洁、自修复、润滑减摩等特性,在防腐、防污、减阻等领域具有广阔的应用前景。综述了超滑表面的润湿理论,总结了水相和油相在气相下的扩散系数Sow(a)、液滴外部和液滴下方的润湿结构、每种结构单位面积的总界面能、每种结构稳定性的等效判据以及超滑表面存在的12种热力学状态。讨论了超滑表面的制备原则,总结了制备粗糙基底的方法及优缺点。为了制备性能优异稳定的超滑表面,在遵循设计原理的同时,还需充分了解衬底、润滑剂、工作流体和外部气体之间的相互作用。针对多功能超滑表面的特性,综述了其在防腐蚀、防覆冰、防污、减阻、油水分离、水雾收集、生物医学7个领域的应用机理和研究现状。最后,对超滑表面的发展前景进行了展望。未来的超滑表面应朝着制备工艺简单有效、力学性能稳定、多功能化、绿色环保的方向发展。

PBL优化教学法在核医学教学中的价值探讨

目的探讨基于问题的学习(problem based learning,PBL)优化教学法在核医学教学中的价值。方法选择2021年3月—2022年4月桂林医学院临桂临床医学院2018级、2019级临床医学专业本科生共88名,随机分为PBL优化试验组、PBL传统组和对照组,每组分别为28、31、29名。对照组采用传统教学模式,PBL传统组采用PBL教学法,PBL优化试验组采用PBL优化教学方法。对3组满意度评分、基础知识及临床应用考试成绩进行比较。结果 PBL优化试验组、PBL传统组、对照组满意度、基础知识成绩差异无统计学意义(P>0.05)。PBL优化试验组临床应用成绩最高,PBL传统组次之,对照组最低,差异有统计学意义(P <0.05)。结论在核医学教学中,应用PBL优化教学法可避免普通PBL法的“发散”等弊端,兼顾传统教学知识点的归纳与PBL教学法的自主学习应用等优势,使教学目的“传授知识、学以致用”得到更好的体现,有利于提高临床应用成绩。

认识“矛盾”——材料计算方法与应用课程中的辩证唯物主义思政设计

在“立德树人”的根本任务下,材料计算方法与应用结合课程重点内容——理论知识的“简单美”与实际材料中的“缺陷”之间的矛盾,阐述该课程中加入思政要素的创新性及必要性,讨论学生参加该课程思政环节的收获与意义。通过认识材料世界中的“矛与盾”,引导学生形成辩证唯物主义思想,学会在对立统一中前进,树立正确的世界观、人生观和价值观;学生自主进行思政内容学习的新方式提高主观能动性,也为其他课程开展思政教学提供新的思路。

混合研究方法在新时代工会研究中的理论优势与实践应用

混合研究方法在工会研究中发挥着重要作用,通过结合定性和定量研究的优势,提供了一种全面理解复杂工会现象的独特途径。这种方法不仅增加了数据的多样性和理论的验证性,还提升了结果的解释性。聚敛式设计可用于深入分析工会核心议题,解释性顺序设计适用于研究因果关系,而探索性序列设计则有助于识别和评估工会领域的新议题。在应用这些设计时,研究者需要仔细选择,并注意数据整合和伦理方面的考量,以确保研究的科学性和可信度。

提升“地球物理场论”课程教学质量的三个着力点

“地球物理场论”是地球物理类专业一门非常重要的专业基础课。笔者在近十年的教学实践中,根据课程特点和学生认知规律,分别从数学知识的应用、物理知识的教学以及与后续课程的衔接三个方面,对提升课程教学质量进行深入细致的探索。笔者认为数学知识的应用应根据专业需要进行有针对性的取舍,让学生体会到数学知识在专业上的应用,同时要注重体现数学知识中的物理思想;物理知识的教学应以恰当的方式引入新概念,在教学中适当地引入物理学史的介绍,注重让学生掌握物理思想方法、学会用物理学的视角看待问题、分析问题和解决问题;通过科学符号的统一、课后习题的渗透、叙述的一致性上做好与后续专业课程的衔接。

面向市政工程智能化设计的BIM技术理论方法及应用

传统的市政工程设计中,常常存在着计算方法精度不足、效率低下等问题,这些问题严重制约了市政工程设计的质量和效率。为解决这些挑战,建筑信息模型(BIM)技术作为一种数字化、智能化的设计与管理方法应运而生。本研究旨在探讨面向市政工程智能化设计的BIM技术理论方法及其应用。通过本研究的深入探讨,旨在为推动城市建设的智能化和可持续发展提供理论支持和实践指导,促进市政工程设计的高效、智能化和可持续发展。BIM技术的不断创新与应用,将为市政工程设计带来更加精确、高效和可靠的解决方案,助力城市建设迈向更加智慧和繁荣的未来。

Understanding the Relativistic Generalization of Density Functional Theory (DFT) and Completing It in Practice

In 2014, 50 years following the introduction of density functional theory (DFT), a rigorous understanding of it was published [AIP Advances, 4, 127,104 (2014)]. This understanding includes two features that complete the theory in practice, inasmuch as they are necessary for its correct application in electronic structure calculations;this understanding elucidates what appears to have been the crucial misunderstanding for 50 years, namely, the confusion between a stationary solution, attainable with most basis sets, following self-consistent iterations, with the ground state solution. The latter is obtained by a calculation that employs the well-defined optimal basis set for the system. The aim of this work is to review the above understanding and to extend it to the relativistic generalization of density functional theory by Rajagopal and Callaway [Phys. Rev. B7, 1912 (1973)]. This extension straightforwardly follows similar steps taken in the non-relativistic case, with the four-component current density, in the former, replacing the electronic charge density, in the latter. This new understanding, which completes relativistic DFT in practice, is expected to be needed for the study of heavy atoms and of materials (from molecules to solids) containing them—as is the case for some high temperature superconductors.

案例教学法在旅游学概论教学中的应用研究

旅游学概论是旅游管理专业的专业基础课,是引导学生增强专业自信、建立学习兴趣、树立职业志向的重要入门必修课。在教学中运用案例教学法有利于增强该门课程对学生的吸引力,有助于学生更好地融会贯通理论知识。鉴于此,以旅游学概论课程为研究对象,从课前准备、课中实施和课后教学效果评价三个阶段阐述了案例教学法的实施过程,要精选案例、丰富案例呈现方式、多种方法激励学生参与互动和及时点评总结,从案例教学内容引领化、案例教学团队多元化、案例教学场域开放化等方面提出应用建议。

任务驱动同伴互助教学法理论研究及应用

任务驱动教学法和同伴互助学习两大模式的融合是在深化改革教育基础上进行的积极探索,两者相辅相成,共同促进教学活动的完善和学生通用能力的培养。该文在回顾这两种模式的理论模式和应用方式的基础上,重点分析任务驱动型同伴互助学习模式对学生学习能力的影响以及该教学模式在应用中的优势和缺陷,以寻求该模式的创新突破,从而促进任务驱动同伴互助教学法在教学领域的深入发展。

急性脑梗死溶栓后患者应用互动达标理论功能锻炼的效果研究

目的:探索和分析急性脑梗死溶栓后患者应用互动达标理论功能锻炼的效果研究。方法:从本院2020年2月到2022年2月选取142例急性脑梗死溶栓后患者作为研究对象,按照随机数表法将急性脑梗死溶栓后患者平均分为2组,一部分为对照组采用常规护理方法进行干预,一部分为观察组在对照组基础上添加以互动达标理论为基础功能锻炼方法进行干预。使用临床心脑血管患者生活质量评价量表(Short form 24 questionnaire,SF-24)对患者的生活质量进行评价,使用临床患者康复知识掌握程度评价表格对患者的康复知识掌握程度进行评价,测量和统计患者的自我管理能力评分值和6 min步行试验距离。结果:观察组急性脑梗死溶栓后患者的生活质量评分结果要高于对照组急性脑梗死溶栓后患者的生活质量评分结果,其中观察组工作状况、一般生活功能、社会心理功能与对照组患者的工作状况、一般生活功能、社会心理功能相比较有比较大幅度的提高;接受干预后观察组患者的完全掌握占比值和基本掌握占比值均高于对照组患者的完全掌握占比值和基本掌握占比值,另外观察组患者的康复知识总掌握率值和对照组患者的康复知识总掌握率值相比较有一定程度的提升;干预后观察组急性脑梗死溶栓后患者的自我管理能力评分值、6min步行试验距离值均要好于对照组患者的数据值(P<0.05)。结论:急性脑梗死溶栓后患者应用以互动达标理论为基础功能锻炼后能够一定程度上提高患者的生活质量以及康复知识掌握情况,并且患者接受干预后的自我管理能力以及6min步行试验距离均有较好的发展。

Transfer matrix method for multibody systems(Rui method) and its applications

The transfer matrix method for multibody systems, namely the "Rui method", is a new method for studying multibody system dynamics, which avoids the global dynamics equations of the system, keeps high computational speed, and allows highly formalized programming. It has been widely applied to scientific research and key engineering of lots of complex mechanical systems in 52 research directions. The following aspects regarding the transfer matrix method for multibody systems are reviewed systematically in this paper: history, basic principles, formulas, algorithm, automatic deduction theorem of overall transfer equation, visualized simulation and design software, highlights, tendency, and applications in 52 research directions in over 100 key engineering products.