Research on the Practical Path to Realize the Guidance of the Ideological Value of College Students in the New Horizon

The report of the 19th communist party of China national congress on youth work provides theoretical support and practical guidance for the realization of the ideological value of college students in the new era.In the new era,it is necessary to comprehensively and deeply study and judge the value situation of young students in colleges and universities,crack the problems and shortcomings faced by ideological and political work in colleges and universities,and explore effective educational paths in the practice of ideological and political work,so as to orderly realize the ideological value guidance of college students.

ASYMPTOTIC SOLUTIONS OF BOUNDARY VALUE PROBLEMS FOR THIRD-ORDER ORDINARY DIFFERENTIAL EQUATIONS WITH TURNING POINTS

Boundary value problem; for third-order ordinary differential equations with turning points are studied as follows : epsilon gamma ' ' + f(x ; epsilon) gamma ' + g(x ; epsilon) gamma ' +h(x ; epsilon) gamma = 0 (- a < x < b, 0 epsilon 1), where f(x ; 0) has several multiple zero points in ( - n, b). the necessary conditions for exhibiting resonance is given, and the uniformly valid asymptotic solutions and the estimations of remainder terms are obtained.

A class of boundary value problems for third-order differential equation with a turning point

A class of boundary value problems for a third-order differential equation with a turning point is considered. Using the method of multiple scales and others, the uniformly valid asymptotic expansion of solution for the boundary value problem is constructed.

On the Singular Perturbation of Nonlinear Systems with Turning Points

In this paper we consider the asymptotic behavior of boundary value problems of nonliner systems εy″= F(t,y,y′,ε) , -1<t<1, y(-1,ε)=A, y(1,ε)=B when F possesses a generalized turning point at t=0. The interior layer phenomenon of the problem is discussed.

Effects of Fungi Scratching on the Growth of North Cordyceps

[Objective] North Cordyceps is as valuable as the wild Cordyceps nensis on medicinal value, nutrients, and trace element contents, which attracts lots of researchers to explore the cultivation method. In order to master the best way to increase output, an experiment was conducted [Methods] To conclude the result, 100 boxes were chosen, of which 50 boxes were treated with fungiscratching in the same condition, based on comparisons of color changing and fruit body. [Results] The stroma have consistent length in good order ,but there is 1 box of scratching happened infections after operating. [Conclusion] Scratching can promote mycelium turning color better, shorter the cycle of fruiting, and prevent the phenomenon of ＂aside grass＂; and ＂no grass＂; effectively,al of this can make the North Cordyceps grow more dense and neatly.

Spatial Modeling of the Highest Daily Maximum Temperature in Korea via Max-stable Processes

This paper examines the annual highest daily maximum temperature （DMT） in Korea by using data from 56 weather stations and employing spatial extreme modeling. Our approach is based on max-stable processes （MSP） with Schlather＇s characterization. We divide the country into four regions for a better model fit and identify the best model for each region. We show that regional MSP modeling is more suitable than MSP modeling for the entire region and the pointwise generalized extreme value distribution approach. The advantage of spatial extreme modeling is that more precise and robust return levels and some indices of the highest temperatures can be obtained for observation stations and for locations with no observed data, and so help to determine the effects and assessment of vulnerability as well as to downscale extreme events.

Development of sustainable and efficient recycling technology for spent Li-ion batteries: Traditional and transformation go hand in hand

Clean and efficient recycling of spent lithium-ion batteries(LIBs)has become an urgent need to promote sustainable and rapid development of human society.Therefore,we provide a critical and comprehensive overview of the various technologies for recycling spent LIBs,starting with lithium-ion power batteries.Recent research on raw material collection,metallurgical recovery,separation and purification is highlighted,particularly in terms of all aspects of economic efficiency,energy consumption,technology transformation and policy management.Mechanisms and pathways for transformative full-component recovery of spent LIBs are explored,revealing a clean and efficient closed-loop recovery mechanism.Optimization methods are proposed for future recycling technologies,with a focus on how future research directions can be industrialized.Ultimately,based on life-cycle assessment,the challenges of future recycling are revealed from the LIBs supply chain and stability of the supply chain of the new energy battery industry to provide an outlook on clean and efficient short process recycling technologies.This work is designed to support the sustainable development of the new energy power industry,to help meet the needs of global decarbonization strategies and to respond to the major needs of industrialized recycling.

Observability analysis of feature aided terminal guidance systems

Feature aided design of estimators and guidance laws can significantly improve the interception performance of the terminal guidance system. The achieved enhancement can be effectively assessed by observability analysis methods. This paper first analyzes and discusses the existing assessment methods in a typical endgame scenario with target orientation observations. To get over their deficiencies, a novel singular value decomposition（SVD） method is proposed. Employing both theoretical analysis and numerical simulation, the proposed method can represent the degree of state observability which is enhanced by integrating target features more completely and quantitatively.

Turning methods for quadruped robot with two degrees of freedom per leg

With the target at simplicity like facilitating the mechanical system,the quadruped robots usually have limited degrees of freedom per leg.Addressing the robot whose legs have only two degrees of freedom,this paper explores several turning strategies including altering the median value,changing the phase difference,and modifying the amplitude.The insights of the proposed methods are that we break down the symmetries which exist during the process of the robot locomotion and rebuild them.Since we probe into the turning feasibility from the points of the median value,phase difference and amplitude in the sine functions,these turning methods are feature of universality.In order to evaluate these methods,this paper presents a new way to weigh the stability,which can be easily applied to practical robots.Experiments demonstrate that the quadruped turns around with little effort and endeavor.

Guidance and Strategies for Rural Development Based on "Amenity Value"

The connotation of "amenity value" was elaborated,construction practices of "rural amenities" in Taiwan were reviewed,and its role in improving agricultural production environment and operation pattern,promoting rural economic development and quality of rural residents was highlighted.On this basis,a new rural value system was established from the perspectives of agricultural functions,industrial forms and economic forms,and the concept of "rural amenities" was defined.Moreover,the development targets of "rural amenities" were analyzed,including the overall objectives and those specific ones from 3 aspects:production,life and ecology,and finally suggestions on the development of "rural amenities" were proposed,that is,elaborate production,elegant life and refined ecology.Elaborate production focuses on maintaining the diversity of agricultural functions,promoting the upgrade and transformation of agriculture from the aspects of agricultural growth drivers,agricultural production mode,agricultural operation subjects,agricultural operation pattern,agricultural functions,and tries to bring new concepts to agricultural production and operation patterns through developing recreational agriculture and LOHAS rural tourism (LOHAS refers to Lifestyles of Health and Sustainability);elegant life emphasizes the optimization of rural communities,and the protection of cultural relics in rural areas;refined ecology highlights the construction of "rural amenities" from 3 aspects of rural ecosystem,rural living environment and farmland eco-environment.

A NEW EFFICIENT METHOD TO BOUNDARY VALUE PROBLEM FOR BALLISTIC ROCKET GUIDANCE

The exploitation of rocket guidance technology on the basis of the guidance law of Space Shuttle and Pegasus rocket was performed. A new efficient method of numerical iteration solution to the boundary value problem was put forward. The numerical simulation results have shown that the method features good performances of stability, robustness, high precision, and algebraic formulas in real computation. By virtue of modern DSP （digital signal processor ） high speed chip technology, the algorithm can be used in real time and can adaot to the requirements of the big primary bias of rocket guidance.

A Study on the Current Situation, Challenges and Value-guiding Strategies of the Cultural Communication of Chinese Online Micro-Short Dramas

This paper discusses in depth the current situation of cultural communication of Chinese online micro-short dramas,the challenges they face,and the strategies for guiding values.With the rapid development of Internet technology,online micro-short dramas,as an emerging form of cultural communication,have rapidly risen to become an important force in the field of cultural communication in China with their short,concise,diversified contents and rapid dissemination.This paper first defines the definition and characteristics of online microshort dramas,and analyzes their current situation in cultural communication,including the significant improvement in quantity and quality,rich and diversified content themes,and a wide range of audience groups.However,the rapid development of online microshorts also faces challenges such as insufficient content innovation,serious homogenization,unsound regulatory mechanism,and ambiguous value orientation.To address these issues,this paper proposes value-oriented strategies including strengthening policy guidance and supervision,enhancing creators'quality and sense of responsibility,optimizing platform content ecology and recommendation mechanism,strengthening audience education and guidance,and promoting the deep integration of industry,academia,research and application.Through case studies and theoretical discussions,this paper aims to provide effective value guidance paths for the cultural dissemination of online micro-dramas,and to promote their development in a more healthy and positive direction.

EXISTENCE AND UNIQUENESS OF THE SOLUTION FOR NONLINEAR THIRD-ORDER ROBIN BOUNDARY VALUE PROBLEM WITH A TURNING POINT

The paper aims to obtain existence and uniqueness of the solution as well as asymptotic estimate of the solution for singularly perturbed nonlinear thirdorder Robin boundary value problem with a turning point. In order to achieve this aim, existence and uniqueness of the solution for third-order nonlinear Robin boundary value problem is derived first based on the upper and lower solutions method under relatively weaker conditions. In this manner, the goal of this paper is gained by applying the existence and uniqueness results mentioned above.

THE BOUNDARY VALUE PROBLEMS OF A CLASS OF ELLIPTIC EQUATION WITH A CURVE OF TURNING POINT

The boundary value problems of a class of elliptic equation with a curve of turning point are considered. Using the method of multiple scales and the comparison theorem, the asymptotic behavior of solution for the boundary value problem is studied.

SINGULAR PERTURBATION OF THIRD ORDER NONLINEAR BOUNDARY VALUE PROBLEM WITH TWO TURNING POINTS

In this paper, by the theorem of differential inequalities, we prove the existence of the solution of a singularly perturbed boundary value problem of thirdorder nonlinear differential equation with two turning points.

New three-dimensional guidance law for BTT missiles based on differential geometry and Lie-group

A new non-decoupling three-dimensional guidance law is proposed for bank-to-turn （BTT） missiles with the motion coupling problem. In this method, the different geometry is taken for theoretically modeling on B-IT missiles＇ motion within the threedimensional style without information loss, and meanwhile, Liegroup is utilized to describe the line-of-sight （LOS） azimuth when the terminal angular constraints are considered. Under these cir- cumstances, a guidance kinematics model is established based on differential geometry. Then, corresponding to no terminal angular constraint and terminal angular constraints, guidance laws are re- spectively designed by using proportional control and generalized proportional-derivative （PD） control in SO（3） group. Eventually, simulation results validate that this developed method can effectively avoid the complexity of pure Lie-group method and the information loss of the traditional decoupling method as well.

Integrated guidance and control design method based on finite-time state observer

A composited integrated guidance and control(IGC) algorithm is presented to tackle the problem of the IGC design in the dive phase for the bank-to-turn(BTT) vehicle with the inaccuracy information of the line-of-sight(LOS) rate. For the sake of theoretical derivation, an IGC model in the pitch plane is established. The high-order finite-time state observer(FTSO), with the LOS angle as the single input, is employed to reconstruct the states of the system online. Besides, a composited IGC algorithm is presented via the fusion of back-stepping and dynamic inverse. Compared with the traditional IGC algorithm, the proposed composited IGC method can attenuate effectively the design conservation of the flight control system, while the LOS rate is mixed with noise. Extensive experiments have been performed to demonstrate that the proposed approach is globally finite-time stable and strongly robust against parameter uncertainty.

Simple Singular Perturbation Problems with Turning Points

The paper considers the asymptotic solution of two-point boundary value problems εy” + A(x)y’ = 0, 0 ≤ x ≤ 1, when 0 1, A(x) is smooth with isolated zeros, y(0) = 0 and y(1) = 1. By using perturbation method, the limit asymptotic solutions of various cases are obtained. We provide a reliable and direct method for solving similar problems. The limiting solutions are constants in this paper, except in narrow boundary and interior layers of nonuniform convergence. These provide simple examples of boundary layer resonance.

研究生冶金资源综合利用课程思政教学探索

各门课程中蕴含的思想政治教育素材是丰富且珍贵的,将课程思政融入研究生课程中具有重要意义。冶金资源综合利用课程是冶金工程专业博士研究生的一门专业课。该课程主要包括冶金过程中的废水、废气和废渣(三废)对环境的危害及“三废”资源的综合再利用情况。依据该课程的教学内容,深入挖掘课程思政资源,探索不同的融入方式,将教学内容与五爱、环境保护、社会责任感、世界格局、团队意识和创新意识培养等思政元素有机融合,为其他学科的研究生课程思政建设提供借鉴。

卵圆孔未闭合并脑梗死的危险因素及经食道超声引导下的封堵价值

目的:探讨卵圆孔未闭合并脑梗死的危险因素及经食道超声引导下的封堵价值。方法:选取120例卵圆孔未闭患者为研究对象,依据是否发生脑梗死分为单纯卵圆孔未闭组(n=78)和卵圆孔未闭合并脑梗死组(n=42);卵圆孔未闭合并脑梗死组再根据治疗方式不同分为常规治疗组(n=18)和介入封堵组(n=24)。分析卵圆孔未闭合并脑梗死的危险因素;比较卵圆孔未闭合并脑梗死组不同治疗方式患者的临床疗效、头痛程度[头痛影响测评量表6(HIT-6)评分]和脑梗死相关并发症发生情况。结果:单因素及多因素分析显示,年龄、患有高血压和糖尿病、红细胞分布宽度变异系数和纤维蛋白原异常是卵圆孔未闭患者发生脑梗死的危险因素(P<0.05)。介入封堵组患者治疗总有效率高于常规治疗组(83.33%vs.50.00%,P<0.05);HIT-6评分低于常规治疗组[(32.15±4.08)分vs.(47.26±4.63)分,P<0.05];脑梗死相关症状并发症发生率低于常规治疗组(4.17%vs.44.44%,P<0.05)。结论:高龄、患有高血压和糖尿病、红细胞分布宽度变异系数及纤维蛋白原指标异常均是卵圆孔未闭患者发生脑梗死的危险因素;经食道超声引导下的封堵术能提高卵圆孔未闭合并脑梗死患者的临床疗效,降低头痛程度和脑梗死相关症并发症的发生率,值得临床推广应用。