强耦合场景中的互质阵列设计与分析

阵列信号处理在雷达、声纳和无线通信等领域中具有广泛应用，波达方向估计作为其核心研究内容，直接影响系统性能。然而，传统均匀阵列受限于自由度不足与互耦效应显著等固有缺陷，在实际应用中往往难以满足高性能需求。相较之下，互质阵列在阵元数目相同的条件下，能够实现更高的自由度与更低的互耦影响，显示出重要的理论价值与广阔的应用前景。在本报告中，将系统介绍多子阵互质阵列的理论框架，并基于该框架阐述其阵列设计流程，进一步提出两种新型阵列变体构造方法。最后，通过仿真实验验证所提阵列结构相较于现有阵列在性能上的优越性。

88304am永利集团科技大讲堂之院士论坛: Building a Sustainable Future: Taking Green Building from Lab to Landscape

Building a Sustainable Future: Taking Green Building from Lab to Landscape

太空新基建——我国商业航天及卫星互联网技术初探

随着航天产业与低成本可回收火箭技术的进步，国内外卫星互联网技术快速发展，以SpaceX为代表的猎鹰9号火箭和Starlink星座发展迅速，在过去短短几年内，SpaceX公司在500Km低地球轨道部署了近万颗卫星。在国内，受限于传统火箭运力不足，我国卫星互联网基建速度存在规划超前和建设滞后的剪刀差。近年来以上海垣信卫星和中国星网为代表的国内卫星互联网公司加速追赶。卫星互联网构建是一项系统工程，涉及火箭运力、轨道频谱、微波激光通信等多种技术。本讲座从Starlink技术、可回收火箭技术、卫星互联网组网、卫星星间激光通信、星载人工智能等几个方面对我国商业航天及卫星互联网技术做简要介绍。

空间与战略——中国历史的军事地理进程

气候变化背景下藏北羌塘高寒牧区“人-草-畜”关系研究

Exploring the inverse problem from the correlation function for system with two open bottom quarks

We perform a study of two-channel correlation functions for system with two open bottom quarks using an extension of the local hidden gauge approach which provides the interaction from the exchange of light vector mesons and gives rise to a bound state of these components in I=0 with a binding energy of about 21 MeV. After that, we face the inverse problem of determining the low energy observables, scattering length and effective range for each channel, the possible existence of a bound state, and, if found, the couplings of such a state to each component as well as the molecular probabilities of each of the channels. We use the bootstrap method to determine these magnitudes and find that, with errors in the correlation function typical of present experiments, we can determine all these magnitudes with acceptable precision. In addition, the size of the source function of the experiment from where the correlation functions are measured can be also determined with a high precision.

pi-pi谱的一般描述和f0(980)的结构讨论

The nature of light scalar mesons remains an unsolved puzzle in hadron physics, complicated by their large widths and controversial partonic structure. This report will first introduce the debates surrounding the structure of the f0(980). By incorporating the two-pion light-cone distribution amplitudes (2pi-DAs), the report will subsequently elucidate the multi-particle state dominance picture of f0(980) the in the final states of semileptonic charmed meson decays. This picture, along with the simple structure dominance behavior of the f0(980) in meson decays, reveals the diverse emergent phenomena exhibited by light scalar mesons in exclusive processes at different characteristic energy scales. The discussion in this report will closely integrate the latest measurements from the BESIII experiment and traditional cascade decay research approaches.

走向生态文明的实践步骤

走向生态文明的实践步骤。

量子高斯网络可制备纠缠态的函数特征

量子高斯网络是由空间中独立的节点及连接这些节点的高斯量子操作组成，各个节点之间共享纠缠高斯态。在对节点处执行量子操作或者量子测量时，会将节点处共享的量子纠缠传到至整个网络，形成多体纠缠。刻画这种多体纠缠的性质是量子网络中的一个有趣问题，不仅影响到量子网络的技术发展，而且能够增进人们对网络情形下多体纠缠的理解。我们用Renyi-熵诱导的多体互信息、压榨纠缠度量的泛化等信息学函数给出了可制备纠缠高斯态的函数特征。这些特征显示了网络结构对可制备纠缠态具有很强的约束性，这与标准的单一多体纠缠完全不同。

生态文明呼唤一种后现代的生态人

生态人是一种生命力饱满、生生不息、具有高生态智慧和生态意识的人。他们深刻理解万物互相关联的内在联系，尊重自然法则，反对以牺牲自然为代价的发展方式；他们对自然、他人、时代、美有深切的感知与共情，具有“共命意识”，并以此承担起道义责任。生态人不仅有理想、有情怀，还具备实际能力，能打通自然、社会、实践与生命的界限，是通达之人。他们生活简朴、从容淡定、贴近自然，是“踏实的存在”；同时坚守浪漫理想，活出诗意人生。生态文明的建设，离不开生态人的大规模涌现。