A Planning Method for Operational Test of UAV Swarm Based on Mission Reliability

The unmanned aerial vehicle(UAV)swarm plays an increasingly important role in the modern battlefield,and the UAV swarm operational test is a vital means to validate the combat effectiveness of the UAV swarm.Due to the high cost and long duration of operational tests,it is essential to plan the test in advance.To solve the problem of planning UAV swarm operational test,this study considers the multi-stage feature of a UAV swarm mission,composed of launch,flight and combat stages,and proposes a method to find test plans that can maximize mission reliability.Therefore,a multi-stage mission reliability model for a UAV swarm is proposed to ensure successful implementation of the mission.A multi-objective integer optimization method that considers both mission reliability and cost is then formulated to obtain the optimal test plans.This study first constructs a mission reliability model for the UAV swarm in the combat stage.Then,the launch stage and flight stage are integrated to develop a complete PMS(Phased Mission Systems)reliability model.Finally,the Binary Decision Diagrams(BDD)and Multi Objective Quantum Particle Swarm Optimization(MOQPSO)methods are proposed to solve the model.The optimal plans considering both reliability and cost are obtained.The proposed model supports the planning of UAV swarm operational tests and represents a meaningful exploration of UAV swarm test planning.

Life Origin in the Milky Way Galaxy: II. Scanning for Habitable Stellar Systems on Behalf of Future Space Missions

The possibility of the life origin in the stellar systems, located at a distance of ~200 pc from the solar system, was investigated. The stars, in the spectrums of which C (carbon), O (oxygen), N (nitrogen), and P (phosphorus) are found, are called DNA-stars. Based on stellar abundances a new method for searching for habitable exoplanets has been developed and a list of 48 DNA-stars in the solar neighborhood, on which life is possible, has been defined. The quota of DNA-stars is equal 1.3% of the total amount of Hypatia Stellar Catalog. Only three DNA-stars out of selected 48 stars belong to the spectral class as our Sun (G2V). The closest to the solar system is the DNA-star with the number HIP 15510, which belongs to the G8V class and is 6 pc away from the solar system. Nine DNA-stars, which have the highest chemical similarity with solar spectrum, were identified. It is identified that one of these nine stars, HIP 24681, has six planets.

Fast solution to the free return orbit's reachable domain of the manned lunar mission by deep neural network

It is important to calculate the reachable domain(RD)of the manned lunar mission to evaluate whether a lunar landing site could be reached by the spacecraft. In this paper, the RD of free return orbits is quickly evaluated and calculated via the classification and regression neural networks. An efficient databasegeneration method is developed for obtaining eight types of free return orbits and then the RD is defined by the orbit’s inclination and right ascension of ascending node(RAAN) at the perilune. A classify neural network and a regression network are trained respectively. The former is built for classifying the type of the RD, and the latter is built for calculating the inclination and RAAN of the RD. The simulation results show that two neural networks are well trained. The classification model has an accuracy of more than 99% and the mean square error of the regression model is less than 0.01°on the test set. Moreover, a serial strategy is proposed to combine the two surrogate models and a recognition tool is built to evaluate whether a lunar site could be reached. The proposed deep learning method shows the superiority in computation efficiency compared with the traditional double two-body model.

“Einstein Probe”Mission Holds New Promise in Time-domain Astronomy

Einstein Probe,an astronomical satellite designed for X-ray observation on astronomical events drastically evolving over time,was successfully sent into preset orbit by a Long March 2C rocket from China’s Xichang Satellite Launch Center located in Sichuan Province at 15:03 GMT+8 on January 9,2024.

Mission reliability modeling and evaluation for reconfigurable unmanned weapon system-of-systems based on effective operation loop

The concept of unmanned weapon system-of-systems(UWSoS)involves a collection of various unmanned systems to achieve or accomplish a specific goal or mission.The mission reliability of UWSoS is represented by its ability to finish a required mission above the baselines of a given mission.However,issues with heterogeneity,cooperation between systems,and the emergence of UWSoS cannot be effectively solved by traditional system reliability methods.This study proposes an effective operation-loop-based mission reliability evaluation method for UWSoS by analyzing dynamic reconfiguration.First,we present a new connotation of an effective operation loop by considering the allocation of operational entities and physical resource constraints.Then,we propose an effective operationloop-based mission reliability model for a heterogeneous UWSoS according to the mission baseline.Moreover,a mission reliability evaluation algorithm is proposed under random external shocks and topology reconfiguration,revealing the evolution law of the effective operation loop and mission reliability.Finally,a typical 60-unmanned-aerial-vehicle-swarm is taken as an example to demonstrate the proposed models and methods.The mission reliability is achieved by considering external shocks,which can serve as a reference for evaluating and improving the effectiveness of UWSoS.

Validation of the multi-satellite merged sea surface salinity in the South China Sea

Sea surface salinity(SSS)is an essential variable of ocean dynamics and climate research.The Soil Moisture and Ocean Salinity(SMOS),Aquarius,and Soil Moisture Active Passive(SMAP)satellite missions all provide SSS measurements.The European Space Agency(ESA)Climate Change Initiative Sea Surface Salinity(CCI-SSS)project merged these three satellite SSS data to produce CCI L4SSS products.We validated the accuracy of the four satellite products(CCI,SMOS,Aquarius,and SMAP)using in-situ gridded data and Argo floats in the South China Sea(SCS).Compared with in-situ gridded data,it shows that the CCI achieved the best performance(RMSD:0.365)on monthly time scales.The RMSD of SMOS,Aquarius,and SMAP(SMOS:0.389;Aquarius:0.409;SMAP:0.391)are close,and the SMOS takes a slight advantage in contrast with Aquarius and SMAP.Large discrepancies can be found near the coastline and in the shelf seas.Meanwhile,CCI with lower RMSD(0.295)perform better than single satellite data(SMOS:0.517;SMAP:0.297)on weekly time scales compared with Argo floats.Overall,the merged CCI have the smallest RMSD among the four satellite products in the SCS on both weekly time scales and monthly time scales,which illustrates the improved accuracy of merged CCI compared with the individual satellite data.

Joint mission and route planning of unmanned air vehicles via a learning-based heuristic

Unmanned air vehicles(UAVs) have been regularly employed in modern wars to conduct different missions. Instead of addressing mission planning and route planning separately,this study investigates the issue of joint mission and route planning for a fleet of UAVs. The mission planning determines the configuration of weapons in UAVs and the weapons to attack targets, while the route planning determines the UAV’s visiting sequence for the targets. The problem is formulated as an integer linear programming model. Due to the inefficiency of CPLEX on large scale optimization problems, an effective learningbased heuristic, namely, population based adaptive large neighborhood search(P-ALNS), is proposed to solve the model. In P-ALNS, seven neighborhood structures are designed and adaptively utilized in terms of their historical performance. The effectiveness and superiority of the proposed model and algorithm are demonstrated on test instances of small, medium and large sizes. In particular, P-ALNS achieves comparable solutions or as good as those of CPLEX on small-size(20 targets)instances in much shorter time.

Research on agile space emergency launching mission planning simulation and verification method

Space emergency launching is to send a satellite into space by using a rapid responsive solid rocket in the bounded time to implement the emergency Earth observation mission.The key and difficult points mainly include the business process construction of launching mission planning,validation of the effectiveness of the launching scheme,etc.This paper pro-poses the agile space emergency launching mission planning simulation and verification method,which systematically con-structs the overall technical framework of space emergency launching mission planning with multi-field area,multi-platform and multi-task parallel under the constraint of resource schedul-ing for the first time.It supports flexible reconstruction of mis-sion planning processes such as launching target planning,tra-jectory planning,path planning,action planning and launching time analysis,and can realize on-demand assembly of operation links under different mission scenarios and different plan condi-tions,so as to quickly modify and generate launching schemes.It supports the fast solution of rocket trajectory data and the accurate analysis of multi-point salvo time window recheck and can realize the fast conflict resolution of launching missions in the dimensions of launching position and launching window sequence.It supports lightweight scenario design,modular flexi-ble simulation,based on launching style,launching platform,launching rules,etc.,can realize the independent mapping of mission planning results to two-dimensional and three-dimen-sional visual simulation models,so as to achieve a smooth con-nection between mission planning and simulation.

The Mission and Dilemma of College English Teachers in the New Era

The construction of world-class undergraduate education with Chinese characteristics is a major mission for all college English teachers in today’s era,and a considerable proportion of college English teachers are still in varying degrees of difficulties and bottlenecks.How to quickly achieve self-breakthrough and devote themselves to realizing the dream of serving the country and education is a higher requirement for college teachers at the national level.

习近平文化思想的价值、特质与内在逻辑

习近平文化思想坚持马克思主义的立场观点方法,坚守中华文化立场,是习近平新时代中国特色社会主义思想的文化篇,是中国共产党最新的文化思想成果。习近平文化思想明确了新时代文化建设的路线图和任务书,具有鲜明的实践导向性,为新形势下宣传思想文化工作提供了强大思想武器和科学行动指南。习近平文化思想具有丰富的价值意蕴,丰富和发展了马克思主义文化理论,指明和标注了新时代新的文化使命,也为实现中华民族伟大复兴提供行动指南并注入强大精神动力。习近平文化思想展现出了时代特质,坚守人民立场和政治底色、坚持宏微结合和体用贯通,并彰显了民族特性与世界眼光。习近平文化思想坚持和实现了历史性与现实性的统一,文化本体与文化形态的统一,合规律性与合目的性的统一,内在发展和外在保障的统一。把握习近平文化思想的内在逻辑,有利于深刻认识和理解习近平文化思想生成、存在和发展的内外动因。

试论创业型大学的发展阶段与核心要素

创业型大学追求知识进步和知识资本化的双重目标。从大学使命的角度,创业型大学延伸了大学的传统使命,将教学、研究和为经济社会发展做贡献三大使命融为一体并彼此加强。从大学组织变革和内外相互作用的角度,创业型大学的发展基于知识资本化的生产逻辑,是“主体性”与“嵌入性”相互促进的过程。由此提出创业型大学发展“知识积累”“知识交换”与“体系驱动”三个阶段。根据三阶段特征,文章分析了创业型大学发展的七个核心要素,包括锚定创业战略方向、加强学术生产能力、培育师生创业精神、完善技术转移机制、生成新的混成组织、促进大学产业互动、营造创业生态系统。

习近平文化思想的科学性与实践性

党的十八大以来,习近平总书记高度重视党的宣传思想文化工作,主持召开一系列重要会议、发表一系列重要讲话、提出一系列新思想新观点新论断,形成了习近平文化思想。这一思想是一个内涵丰富、逻辑严密的理论体系,科学回答了关于党的宣传思想文化工作的一系列方向性、根本性、战略性的重大问题。这一思想具有深厚的实践基础,新时代十余年来党的宣传思想文化工作在习近平新时代中国特色社会主义思想的指引下,经过“正本清源”与“守正创新”接续努力,取得了历史性成就、发生了历史性变革,也积累了一系列宝贵经验。这一思想正是对党的宣传思想文化工作经验,尤其是新时代实践经验的科学总结。从新时代党的宣传思想文化工作重要经验及其背后逻辑来看,习近平文化思想的科学性和实践性得到进一步彰显和印证,我们党对宣传思想文化工作的规律性认识也进一步深化。

Digital Simulation Platform for Satellite Launch Mission Verification

To simulate the satellite launch mission under a general platform which could be used in a full-digital mode as well as in a semi-physical way, is an important way to certify the mission design performance as well as technical feasibilities, and it relates to complex system simulation methods such as multi-disciplinary coupling, multi-language modeling as well as interactive simulation and virtual simulation technologies. This paper introduces the design of a digital simulation platform for satellite launch mission verification.The platform has the advantages of high generality and extensibility, being easy to build up. The Functional Mockup Interface(FMI) Standard is adopted to achieve integration of multi-source models. A WebGL based 3D visual simulation tool is also adopted to implement the virtual display system which could display the rocket launch process and rocket-satellite separation with high fidelity 3D virtual scenes. A configuration tool was developed to map the 3D objects in the visual scene with simulation physical variables for complex rocket flight control mechanisms, which greatly improves the platform's generality and extensibility. Finally the real-time performance had been tested and the YL-1 launch mission was adopted to demonstrate the functions of the platform.The platform will be used to construct a digital twin system for satellite launch missions in the future.

论新时代中国共产党人“新的文化使命”

担当新时代“新的文化使命”是习近平在文化建设方面提出的新命题,是党和国家文化建设的重大理论创新,是习近平文化思想的重要组成部分。“新的文化使命”是党领导人民所担负的文化责任和文化任务,主要包括中国共产党要领导人民“推动文化繁荣、建设文化强国、建设中华民族现代文明”。“推动文化繁荣”指文化事业、文化产业、文化产品的丰富多样和蓬勃兴盛,“建设文化强国”指现代化建设中文化软实力和中国文化影响力的增强,“建设中华民族现代文明”是指文化发展的升华与远景目标,意味着中华文明迈向现代化。新时代文化使命的3个方面相互依存、逐步扩大、逐层递进,构成一个有机整体。在新征程上担当和践行新的文化使命,要以习近平新时代中国特色社会主义思想,特别是习近平文化思想为指导,坚定文化自信,推动我国文化繁荣发展,实现从文化建设到文明建设的跃升,推动中华文明走向世界。

新时代青年使命担当的马克思人学理论释析

新时代青年要担承实现中华民族伟大复兴的使命。马克思人学理论是基于唯物史观对人的整体观照,关涉人的当下和未来的发展。马克思人学理论中“人的价值”的内外二分阐释新时代青年使命存在的必然与合理,“人的本质”的彰显过程启示新时代青年践行使命的方法和路径,“人的存在”的三种形态鞭策新时代青年践行使命的主动与自觉。用科学的理论武装青年的头脑,助推青年认知、认同并主动投身实践担承其时代使命。

习近平文化思想:新时代党领导文化建设的科学理论指南与根本行动遵循

习近平文化思想是新时代中国共产党领导文化建设实践的理论升华,构成了习近平新时代中国特色社会主义思想的文化篇。学习贯彻习近平文化思想,需要坚持理论与实践相结合、历史与现实相统一的原则,梳理百余年来中国共产党领导文化建设的脉络,回顾党的十八大以来历次宣传思想工作会议及其理论成果,揭示习近平文化思想正式提出的划时代意义。习近平文化思想涵括了文化的地位作用、前进方向、建设目标、实践路径、发展动力等丰富内涵;彰显了明体达用、体用贯通,与时俱进、开放包容,人民至上、胸怀天下等理论品格;体现了坚定文化自信和文化主体性的极端重要性、“两个结合”的方法准则、新的文化使命等原创性贡献。新时代党领导文化建设在加强党对宣传思想文化工作的领导、培育和践行社会主义核心价值观等方面取得了历史性成就。切实担负起新的文化使命,务必以习近平文化思想为指导,明确新的文化使命的本质要义和精神底蕴,强化理论武装、坚持自信自强、推动文化建设高质量发展,在继续推动文化繁荣、建设文化强国、建设中华民族现代文明的奋斗实践中展现新作为。

国际中文教育的使命及其他

文章首先强调要明确认识国际中文教育的使命是为世界各国培养他们所需要的高素质的中文人才;其次表示国际中文教育的使命决定必须抓好汉语书面语教学,并充分陈述了理由;最后指出要开展好汉语书面语教学,目前亟须马上组织力量积极开展“进行汉语书面语教学”的具体研究。

全面深刻把握习近平文化思想的三个维度

习近平文化思想是中国共产党对文化建设规律认识上的新高度。要全面深刻把握习近平文化思想,就要从新时代的伟大成就与伟大变革中认识其内涵、从中国式现代化的宏伟事业中理解其价值、从新时代新征程的时代背景中明确其要求。

面向战区联合作战的空间需求响应任务规划

针对战区联合作战中的空间需求响应问题,描述了面向战区联合作战的空间需求响应任务规划的背景;从空间资源能力、空间需求响应机制、空间需求响应效益和代价等方面,分析了空间需求响应任务规划所需考虑的主要因素;定义并描述了任务规划模型,设计了任务规划计算方法,并结合战区联合作战实际进行了案例仿真与分析,验证了模型和方法的有效性,为战区联合作战中空间需求的有效响应提供了理论和方法支撑。

家族文化、社会使命与家族企业社会创业坚持

采用探索性纵向案例研究法,基于意义赋予理论探讨了家族文化促进家族企业社会创业坚持的过程和机制。研究发现:(1)特定家族文化意涵是支撑家族企业社会创业坚持的主要动力;(2)家族企业社会创业坚持的过程包括三个阶段:独特意涵的家族文化建构阶段、企业社会使命建构阶段、企业社会使命渗透阶段;(3)儒家家族伦理观和价值观的普遍性、家族企业的社会情感财富追求和家族文化独特意涵引领是上述过程发生的驱动机制;(4)三个阶段得以逐步发展的微观机制在于:家族管理者分别采用了情感型、分析型、沉浸型的意义赋予策略,塑造了家族成员的家族创业倾向、企业决策者的社会创业倾向和员工的社会创业倾向。研究挖掘出家族文化促进社会创业坚持的价值和发挥该价值的管理策略,可为更多企业实现社会创业坚持提供行动参考.