Improvement of Intercept Probability Algorithm for Anti-ship Missile Based on Search Theory

Traditional intercept probability model has some drawbacks and can not meet the demands of command and control system. Aiming at this problem, a new calculation method based on search theory, terminal control area distribution function of anti-ship missile, target distribution function and missile's radar scan feature is proposed. Under the condition of common target distribution, an intercept probability model for present point attacking is determined. The simulation verifies its effectiveness and establishes the selecting model for aiming point when enemy ships evade in high speed.

STUDY ON CONTACTING MELTING AND ANTI-SKID TECHNOLOGY FOR A TIRE TRACTION ON ICE

Theoretical analyses and experimental studies of the mechanisms of melting film formation are performed. The results show that frictional heating is the dominant mechanism because temperature behaves in the manner predicted by the theory of frictional heating. A study of the active technology for anti-skid is also made. Conclusions indicate that adjusting tire pneumatic pressure can improve the control stability and the travelling safety of an ice-automobile.

Anti-windup compensation design for a class of distributed time-delayed cellular neural networks

Both time-delays and anti-windup(AW)problems are conventional problems in system design,which are scarcely discussed in cellular neural networks(CNNs).This paper discusses stabilization for a class of distributed time-delayed CNNs with input saturation.Based on the Lyapunov theory and the Schur complement principle,a bilinear matrix inequality(BMI)criterion is designed to stabilize the system with input saturation.By matrix congruent transformation,the BMI control criterion can be changed into linear matrix inequality(LMI)criterion,then it can be easily solved by the computer.It is a one-step AW strategy that the feedback compensator and the AW compensator can be determined simultaneously.The attraction domain and its optimization are also discussed.The structure of CNNs with both constant timedelays and distribute time-delays is more general.This method is simple and systematic,allowing dealing with a large class of such systems whose excitation satisfies the Lipschitz condition.The simulation results verify the effectiveness and feasibility of the proposed method.

煤矿负碳高效充填开采理论与技术构想

矿山安全高效绿色低碳开采是永恒的主题,近零冲击地压、近零生态损害以及低碳、零碳、负碳的绿色开采将成为保障我国能源安全供应与绿色低碳发展的新要求。充填开采是实现这一要求的必然途径。然而,现有充填开采原理与技术装备体系难以突破高产高效、低碳开采的技术瓶颈,对充填材料及充填模式进行变革已势在必行。针对“千米深井资源开发和千万吨产能矿井充填(两个一千)”与“近零生态损害和近零冲击地压(两个近零)”的煤炭绿色低碳开采战略目标,提出了负碳高效充填开采技术全新构想,系统阐述了负碳高效充填开采的定义与科学内涵,提出和建立了由CO_(2)、矸石与快速胶结物混合而成的负碳高孔隙充填材料结构CGIF(CO_(2)Gangue Inorganic Framework)拓扑构型与强度理论以及CGIF混合物充填体固碳理论、快速黏凝胶结材料反应动力学理论、矿区充填开采防治冲击地压等负碳高效充填理论构想;提出了矸石快速高效胶结高孔隙充填材料制备技术、快速黏凝胶结材料绿色高效制备技术、CGIF充填体负碳高效充填开采技术、多面并采高效充填开采技术与工艺、全周期立体高效充填开采防冲技术等关键技术体系。在此基础上,明确了煤矿负碳高效充填开采“基础研究—技术攻关—工程示范”的“三阶段”发展规划,构建了煤矿负碳高效充填开采理论与技术体系构想;评估了煤矿负碳高效充填CO_(2)封存能力,可望实现煤炭负碳开采、低碳利用的煤炭开发利用全过程自身实现碳中和的新格局。

Existence and Uniqueness of Anti-periodic Solutions for 2n-order Differential Equations

In this paper, we study the anti-periodic solutions for 2n-th order differential equations. By using the Schauder＇s fixed point theorem, we present some new results about the existence and uniqueness of anti-periodic solutions for 2n-th order differential equations.

A UNIFIED APPROACH FOR DEALING WITH THE EM SCATTERING FROM SYMMETRIC AND ANTI-SYMMETRIC STRUCTURES

It is of both the theoretical and practical importance to reduce the storage andCPU time of moment methods by utilizing the geometrical and physical features of the scatterer.An unified approach based on the group theory is presented to deal with the EM scattering fromsymmetric and anti-symmetric structures.

Antimatter, Anti-Space, Anti-Time

The article shows that the special theory of relativity (STR) created in the last century was based on postulates due to the lack of the required experimental information and turned out to be incorrect, as its principle of light speed non-exceedance was refuted by studies of special processes in linear electric circuits in the 21st century. And thus, it made obsolete the unsuccessful OPERA and ICARUS experiments carried out at the Large Hadron Collider. Therefore, an alternative version of the STR has been proposed. Its relativistic formulas imply the existence of numerous mutually invisible parallel universes and antiverses. It is explained how they can be seen. There is anti-matter, as well as anti-space and anti-time in antiverses in the same quantities as matter, space and time in universes.

Improvement in the calculation of anti-Stokes energy transfer and experimental justification based on Er_(0.01)Yb_xY_(1 0.01 x)VO_4 crystal

The improvement on the calculation of anti-Stokes energy transfer rate is studied in the present work. The additional proportion coefficient between Stokes and anti-Stokes light intensities of quantum Raman scattering theory as compared with the classical Raman theory is introduced to successfully describe the anti-Stokes energy transfer. The theoretical formula for the improvement on the calculation of anti-Stokes energy transfer rate is derived for the first time in this study. The correctness of introducing coefficient exp{△E/kT} from well-known Raman scatter theory is demonstrated also. Moreover, the experimental lifetime measurement in Er0.01YbxY1-0.01-xVO4 crystal is performed to justify the validity of our important improvement in the original phonon-assisted energy transfer theory for the first time.

竞争约束如何塑造平台相关市场?--基于反垄断案例的质性研究

相关市场界定是平台经济领域反垄断工作的起点和难点。本文基于10个平台市场和98个传统市场的反垄断案例,采用三阶段编码方法,对比分析平台市场和传统市场中从商品的替代性到市场竞争约束的传递路径,构建平台相关市场的竞争约束作用机制模型。研究发现:第一,平台资本是竞争的主体,资本的物质载体差异产生不同的价值增殖模式,在理论上形成不同的相关市场范围。第二,在流通领域,相同的使用价值追逐有限的社会需求,竞争约束表现为商品的替代性。在生产领域,不同的生产过程追逐动态的生产力水平,竞争约束表现为企业的替代性。平台的综合功能、网络效应、产消劳动和市场结构等经济特征使商品和企业的替代性分析更加复杂。第三,市场支配地位是商品的替代性和企业的替代性丧失的结果,垄断企业通过制造市场壁垒维持市场支配地位,制定高于价值的垄断价格,实现垄断利润,因而可以通过潜在竞争者约束这种垄断的市场结构。本文丰富了马克思主义理论的应用场景,为平台经济领域反垄断实务工作提供了学理支撑。

论医疗数据的权属配置 ——基于公共信托理论的视角

医疗数据作为典型的公共数据资源,不愿利用、不敢利用、不知利用的现象成为制约医疗行业数字化和医疗数据科学发展的主要瓶颈,由此引发的“反公地悲剧”危机广泛存在于各地医疗机构以及卫生行政机关之中。当前,医疗数据权属存在的法律争议主要集中在两个方面,包括法律规范的不完善和数据权属的不明确。因此,有必要借鉴“公共信托理论”的观点,用以回应医疗数据的权属争议,在以公民和国家为法律主体的公共信托关系中,合理配置双方的权利义务关系,平衡医疗数据之上的个人利益和公共利益,从而解决医疗数据开发利用权属不清的问题。在公共信托理论下,政府在医疗数据收集、保管和开发利用阶段,承担不同的公共服务责任,从而保障公民数据权利的实现。为了有效监督政府信托义务,需要引入外部监督来保护公共信托权益不受侵犯。通过建构个人信息保护的行政公益诉讼制度、适当扩展行政诉讼受案范围、健全行政复议制度和行政内部举报机制等方式,有助于完善公共信托权益的行政救济制度,促进医疗数据资源在法治轨道下被有效开发和利用。

Dark Matter Creation and Anti-Gravity Acceleration of the Expanding Universe

Dark matter is identified as negative relative energy between quarks in proton and is generated in cold hydrogen gas with pressure gradient in gravitational field. Positive relative energy PRE can be generated between quarks in protons in cold hydrogen gas in outskirts of the universe. The mechanisms for such creation of dark matter and PRE are reviewed and updated in greater detail and clearer manner. The so-generated dark matter in a galaxy can account for the galaxy’s rotation curve. Star formation in this galaxy uses up the hydrogen atoms and thereby reduces its dark matter content. Dark matter created in intergalactic hydrogen gas can form filaments. In a hypothetical model of the universe, a hydrogen atom with a small amount of negative relative energy or dark matter at the outskirts of this universe can via collisions with other atoms turn into one with a small positive relative energy PRE. Once such a sign change takes place, gravitational attraction switches to anti-gravity repulsion unopposed by any pressure gradient. This leads to a “run away” hydrogen atom moving away from the mass center of the universe and provides a basic mechanism for the accelerating expansion of the universe. This theoretical expansion and the measured redshift data are both compatible with the conception of an acceleratingly expanding universe and complement each other. But they cannot verify each other directly because the present model has been constructed for purposes different from those of the measurements. But it can be shown that both approaches do support each other qualitatively under certain circumstances for small velocities. Dark matter and PRE in the present model are not foreign objects like WIMPs and dark energy-cosmological constant but can only be created in cold hydrogen gas in gravitational field. To achieve this, infrequent collisions among the hydrogen atoms must take place. Dark matter was created first and can eventually later evolve into PRE in the outskirts of the universe and in the intergalactic void. Dark matter and PRE will disappear if the hydrogen atom carrying them becomes ionized as in stars.

考虑中间主应力影响的非饱和黄土边坡抗滑桩间距研究

理论研究和工程应用中土体破坏准则的合理选用对研究和设计结果影响较大,同时由于中间主应力效应的影响,导致平面应变试验和常规三轴试验的试验结果的差异也被广泛证实。基于土拱破坏理论,采用理论推导的方式将统一强度理论、统一滑移线场理论和土拱破坏理论应用于非饱和黄土边坡抗滑桩间距研究中,并根据试验数据确定了非饱和黄土中间主应力参数b,推导了基于土拱理论的非饱和黄土边坡抗滑桩间距表达式。通过工程实例研究了非饱和黄土边坡抗滑桩间距随中间主应力参数b和基质吸力的变化规律。研究结果表明,考虑中间主应力效应的影响可增大抗滑桩设计间距,从而降低工程造价。研究对优化非饱和黄土地区抗滑桩间距具有重要的参考价值。

草状氧化铝微结构渐变折射率的计算及实验研究

针对草状氧化铝的微纳结构对折射率的影响,采用台体计算法与柱体计算法计算氧化铝的体积,使用Clausius-Mossotti方程式与MATLAB软件拟合计算微纳结构的折射率变化,使用TFC软件进行拟合,最终计算出草状氧化铝的渐变折射率,研究其微结构的形貌特征及渐变折射率的分布,计算其可见光减反射性能。采用电子束沉积氧化铝薄膜,通过对沉积温度、水煮工艺等参数的优化,获得了不同结构的草状氧化铝纳米薄膜,制备了可见光波段420~680 nm的减反射薄膜。

深化高校思政课供给侧改革的四重维度

系统观念是习近平新时代中国特色社会主义思想的世界观方法论之一,也是做好高校思政课供给侧改革各项工作必须遵循的科学思想方法。深化高校思政课供给侧改革的过程中,必须注重把握系统的历史维度、整体维度、规律维度、结构维度,努力增强思政课育人实效,切实发挥思政课立德树人关键课程作用。

艺术本质核心元素探析

艺术的本质问题是一个论争了几个乃至十几个世纪的话题,也是一个曾经被“反本质主义”要放弃和搁置讨论的形而上问题。从历史上看,研究者曾从“模仿”“形式”“表现”来界定艺术的本质。可以说,艺术既是对现实的“模仿”,又不完全是,因为“模仿”的目的是要表达作者的情感和感受。艺术既是要创造一种美的“形式”,又不完全是,因为通过美的“形式”也还是要表达作者的艺术追求和主观感受。因此,无论“模仿说”还是“形式说”,最终的目的都是要表达或表现作者的主观感觉。“表现”才是艺术中最主要和最核心的元素,“表现说”也更充分地体现着艺术的本质。

“规范保护目的论”:数字经济时代反垄断的新应对

数字经济时代反垄断面临的挑战需要探究新的应对策略。面对反垄断文本模糊引致规范准确适用难题、文本竞合造成规范选择适用障碍的双重挑战,“规范保护目的论”因其发展轨迹及外在功能,可为解决数字经济时代反垄断的挑战提供有益借鉴。出于尊重差异、预防滥用的考量,“规范保护目的论”适用于反垄断领域应遵循类型化的基本要求。依循数字经济时代垄断纠纷与反垄断法律规范文本之间的关系,可得出数字经济时代反垄断领域“规范保护目的论”的三种场景化适用路径:文本明确时补强适用、文本模糊时解释适用、文本竞合时选择适用。

国内马克思主义全球化理论研究热点与趋势展望——基于CiteSpace知识图谱的可视化分析(1998—2023)

马克思主义全球化理论明确指出了全球化发展的历史特征和可能走向,为当前我国应对全球化挑战提供了思想武器,对该议题的探讨成为我国马克思主义研究的重要组成部分。在利用CiteSpace对国内马克思主义全球化理论研究235篇文献样本进行可视化分析时发现:25年来该议题在发展态势上呈波浪式摇摆趋势,并形成了一定的研究力量,但仍存在核心研究群体不稳定、期刊力量分布不均衡等问题。就研究热点而言,社会主义、世界历史、世界市场、资本主义、共产主义、逆全球化等是该领域的研究热词,学者们聚焦马克思主义全球化理论的实质和内涵、该理论视域下的逆全球化研究及其与世界主义思想的关系研究等热点议题进行深度阐释,并逐渐形成了本土化的马克思主义全球化理论研究体系,进一步推动了马克思主义中国化的发展。在发展趋势上,今后围绕逆全球化和民族国家前途命运的马克思主义全球化理论研究将持续深化。

一体推进不敢腐不能腐不想腐——马克思主义反腐败理论的新议题

一体推进不敢腐不能腐不想腐是马克思主义反腐败理论的新议题。这一理论坚持党性和人民性、思想建党和制度治党、战略目标和行动方针方略、高线引领和底线约束以及惩治少数、管住多数、教育全部的协同一致,要求坚持系统观念,贯通融合不敢腐的强大震慑效能、不能腐的刚性制度约束、不想腐的思想教育优势,运用“全周期管理”方式治理腐败,为中国特色反腐败实践提供了重要遵循。新时代,我们党将自我革命战略思想贯穿管党治党全过程,完善反腐败工作体制机制,强化管权治吏,推动反腐败体制机制权威顺畅运行,以强有力监督保障一体推进“三不腐”战略目标顺利实现,在革命性锻造中淬炼先进纯洁、朝气蓬勃的马克思主义执政党。

抗生物黏附材料的构建及在食品领域的应用进展

食源性致病菌生物被膜在食品供应链中的广泛存在给食品微生物安全造成了巨大的负面影响,严重威胁着消费者的身体健康和生命安全。通过改变食品接触表面的理化性质,削弱与生物污染物之间的相互作用,减少生物黏附,可有效防控生物被膜的生成,保障食品微生物安全。本文归纳总结了国内外抗生物黏附材料的研究进展,首先利用DLVO理论量化生物污染物与材料表面之间的相互作用,在此基础上,将现有的抗生物黏附材料分为“疏水”和“亲水”两类,并总结了各类材料的典型构建方法及其抗生物黏附的内在机制,最后结合抗生物黏附材料在食品领域的应用现状,展望了未来的发展方向。本文旨在为新型抗生物黏附材料的开发提供理论指导,以期更好地保障食品微生物安全。

澜沧江中上游反倾斜坡倾倒变形影响因素敏感性及斜坡易倾倒几何模型研究

倾倒是反倾岩质斜坡常见的失稳类型,其变形破坏受多种因素影响。为探究各类因素对反倾斜坡倾倒变形的影响程度及其对变形模式的控制作用,本文以澜沧江中上游反倾岩质斜坡为研究对象,建立了反倾斜坡倾倒变形影响因素体系,结合离散元数值模拟试验结果及改进灰色关联分析理论,对各类影响因素的敏感性进行了研究。在此基础上,以斜坡几何特征参数为输入,基于支持向量回归(SVR)理论对研究区反倾斜坡倾倒变形易发几何模型进行预测。结果表明:(1)反倾斜坡的几何特征参数敏感性最高,水平构造应力次之,岩体力学参数敏感性最弱。(2)反倾斜坡的变形量与变形深度与上下坡角呈正相关,变形深度与岩层倾角呈正相关,但变形量随岩层倾角的增大先增大后减小。(3)研究区内的反倾斜坡存在4种变形模式:稳定斜坡、潜在变形斜坡、浅层倾倒斜坡及深层倾倒斜坡。(4)在研究区内,岩层倾角小于57°的斜坡总体保持稳定;超过57°有产生浅层倾倒变形的可能;超过63°时有产生深层倾倒的可能;达到81°,岸坡普遍产生倾倒变形。本研究成果可为此类斜坡变形体的野外早期识别与灾害危险性评估提供可靠理论参考。