建筑设计中PDM系统开发的关键问题及其实现技术

根据PDM系统建设的实际,提出了开发PDM系统中的几个关键问题,主要包括角色管理、工作流管理、片本控制以及应用软件集成等,对于每一种问题均给出了相应的解决方案。     

乘势而上顺势而进造势而为开创大学生思想政治教育工作新局面

开创大学生思想政治教育工作新局面要乘势而上,增强对其重要性和紧迫性的认识;顺势而进,探索其中规律;造势而为,结合工作实际,增强工作实效性。     

数控加工开放实验与机械类大学生素质培养

随着高素质人才培养需求的提高,实验教学对人才培养的作用愈来愈受到重视.开放实验强调学生的个性化、兴趣、爱好和自主性,一方面担负了人才素质和能力提高的重任,另一方面促进了教学的完善和进步.数控加工开放实验具备引导学生提高素质和能力的充分要素.     

试论高职“1+1+1”技能型人才培养模式

随着社会经济的不断发展,社会对人才质量的要求也在不断提高.要培养符合社会需求的人才,满足社会经济发展的需要,实现人才培养模式的创新是关键.文章拟从分析高职教育人才培养现状出发,从合理确定高职教育人才培养目标、完善职业能力培养体系、提升学生人文素质,加强师资队伍建设四个方面,阐述了如何构建和实施"以人文素质为基础、以职业能力为核心、以创新教育为特征"的"1+1+1"技能型人才培养模式.     

网络传媒语境下少数民族文化的传播发展——以我国彝族年网络报道为例

网络传媒对少数民族文化的传播发展有巨大的重塑作用．通过对近几年我国彝族年的网络报道追踪调查,发现我国少数民族的传统文化在网铬传媒的“显微镜”下逐渐发生着蜕变,这其中既有“因网络”而“变文化”的被动文化重塑,也有“因文化变”而“显于网络”的文化诉求．网络传播的“交互性”、“开放性”与“文化资源重新配置”等特性,为各种少数民族文化资源提供了更为广泛的展示空间,成为各类文化的“自我抒写者”书写个人见解的新式平台,同时,增进了各种文化之间的交流．网络传媒对少数民族文化的发展既是挑战又是机遇：一方面,网络传媒可以帮助更广泛受众更深刻地理解、传播与保护少数民族文化;另一方面,在网络传播的过程中,某些少数民族文化之精髓无形中被消解殆尽,最后成为“象征的符号文化”．     

Effects of Second-Order Difference-Frequency Wave Forces on Floating Wind Turbine Under Survival Condition

In this paper, the effects of second-order difference-frequency wave forces on the global motion of an offshore wind turbine system with a large displacement under the survival condition are studied. In this case, the hydrodynamic force is the main force because the blades are feathered to reduce the lifting force. The first-order hydrodynamic forces are calculated by WADAM, while the second-order wave forces are calculated by a customized MATLAB module. Then the hydrodynamic coefficients are transferred to the wind turbine analytical code FAST. Through the comparisons of dynamic responses between the first- and second-order numerical models, it is found that the second-order wave forces significantly influence the motion of floating wind turbine under the survival condition. Moreover, neglecting the second-order force significantly underestimates the tension forces in the mooring lines.     

选修课管理系统分析与设计

统一建模语言UML是一种面向对象的建模语言，支持面向对象的软件工程，以其超强的表达能力而备受人们的关注。本文简单介绍UML建模机制后分析了选修课管理系统功能及其系统构架，运用UML建模原理对系藐设计部分建立模型。     

从陈云的思路与对策看新中国成立初期的失业救助

失业救助是新中国成立初期(1)党的城市工作的重要内容之一。面对极其严重的失业状况,陈云在领导新中国经济建设过程中,把救助失业者作为政府的责任,并采取了一系列积极有效的措施,有效地治理了失业,为实现社会的稳定与发展作出了贡献。     

Development of a space cold atom clock

Atomic clocks with cold atoms play important roles in the field of fundamental physics as well as primary frequency standards. Operating such cold atom clocks in space paves the way for further exploration in fundamental physics, for example dark matter and general relativity. We developed a space cold atom clock (SCAC), which was launched into orbit with the Space Lab TG-2 in 2016. Before it deorbited with TG-2 in 2019, the SCAC had been working continuously for almost 3 years. During the period in orbit, many scientific experiments and engineering tests were performed. In this article, we summarize the principle, development and in-orbit results. These works provide the basis for construction of a space-borne time-frequency system in deep space.     

Large-scale multiferroic complex oxide epitaxy with magnetically switched polarization enabled by solution processing

Complex oxides with tunable structures have many fascinating properties, though high-quality complex oxide epitaxy with precisely controlled composition is still out of reach. Here we have successfully developed solution-based single-crystalline epitaxy for multiferroic (1-x)BiTi_(1-y)/2Fe_yMg_(1-y)/2O₃–(x)CaTiO₃ (BTFM–CTO) solid solution in large area, confirming its ferroelectricity at the atomic scale with strong spontaneous polarization. Careful compositional tuning leads to a bulk magnetization of 0.07 ± 0.035 μ_B/Fe at room temperature, enabling magnetically induced polarization switching exhibiting a large magnetoelectric coefficient of 2.7–3.0 × 10⁻⁷ s/m. This work demonstrates the great potential of solution processing in large-scale complex oxide epitaxy and establishes novel room-temperature magnetoelectric coupling in epitaxial BTFM–CTO film, making it possible to explore a much wider space of composition, phase, and structure that can be easily scaled up for industrial applications.