水声定位标定系统信号回波测量方法研究

水声定位标定系统中水下基准(模拟目标声信号)位置的测量精度直接影响到对水声定位系统定位误差的考核。本文介绍了在对模拟目标声源进行定位时的回波信号测量处理,同时对不同频率下的定位精度进行仿真,证实了信号处理的准确性,为工程应用提供理论参考。

智能家居电器远程无线控制系统设计

近几年,物联网产业的兴起带来了很多独特的优越性,使得越来越多的电子设备可以接入互联网。本论文介绍了一种家居电器远程无线控制系统,由硬件电路配合使用开发的Android手机APP家庭中控网关,通过移动网络链路远程控制家电设备的远程无线控制系统。该设计具有成本低、耗电低、实时接入、高稳定性等特点,非常适合于家居家电设备的控制及温、湿度等监控。

航海人才“五维”培养模式研究与实践

为适应现代航运对航海人才的多样化需求,航海类院校应把人才培养多元化水平和质量作为航海类专业建设与发展的重要指标,及时调整人才培养方案,修订专业课程体系,形成以“融合思政教育、培养家国情怀、紧扣航运实际、探索自主学习、激发创新动力”为核心的航海人才“五维”培养模式。构建新的航海教育知识学习体系和能力培养结构,以激励学生奋发图强、刻苦读书,推进专业内涵建设,提高人才培养质量,是培养高素质船员队伍的有效模式和重要保障。

A KAM-type Theorem for Generalized Hamiltonian Systems

In this paper we mainly concern the persistence of invariant tori in generalized Hamiltonian systems. Here the generalized Hamiltonian systems refer to the systems which may admit a distinct number of action and angle variables. In particular, system under consideration can be odd dimensional. Under the Riissmann type non-degenerate condition, we proved that the majority of the lower-dimension invariant tori of the integrable systems in generalized Hamiltonian system are persistent under small perturbation. The surviving lower-dimensional tori might be elliptic, hyperbolic, or of mixed type.

Difference Equation for N-body Type Problem

In this paper, the difference equation for N-body type problem is established, which can be used to find the generalized solutions by computing the critical points numerically. And its validity is testified by an example from Newtonian Threebody problem with unequal masses.