一类投资竞赛模型的稳定性分析
建立了多个同类企业的投资竞赛数学模型,运用稳定性理论,对系统不动点的稳定性做出分析,给出企业间投资保持均衡态势时参数的取值范围,并分析了其经济学意义.通过数据仿真验证了理论分析的正确性.
Xiuzhuan Shen
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课堂教学质量的模糊综合评判
将模糊综合评判的数学方法应用于教师课堂教学质量的评估体系,建立了数学模型,对模型中的一级指标和二级指标分别采用德尔斐法和专家赋分的方法确定各评价指标权重。用此模型对被测教师的课堂教学质量进行了全面评价,并与专家评价结果进行比较,结果表明该模型具有较好的实用性。
调整专业课程体系,拓宽专业口径,培养合格人才——信息与计算科学专业的建设与改革
信息与计算科学专业是一门新兴的理科专业,探索如何办好本专业是一项较有意义的工作,调整课程体系,拓宽专业口径,将信息与计算融为一体,是专业建设的新途径,另外,文章还初步讨论了信息与计算科学专业的实践教学和师资队伍建设问题。
高等数学分层次教学的探索与实践
随着招生规模的不断扩大,各高校学生的整体素质有所下降,并且个体差异很大,这给高等数学教学带了前所未有的难度,为了改变这一现状,一些院校开展了分层次教学改革的尝试,笔者根据多年来分层次教学改革的经验,深入探讨了高等数学分层次教学的必要性、意义、具体实施方案等,提出了建设性的对策和建议,并对自己的教学实践进行了详细的总结和分析。
Chunxia Li
Bred-Ensemble Ocean Forecast of Loop Current and Rings
Ocean forecasting with a General Circulation Model (GCM) commonly begins from an initial analysis obtained by data assimilation. Instead of a single initial state, bred-ensemble …
X.q. Yin
An Improvement of the Too Cold Tongue in the Tropical Pacific with the Development of an Ocean-Wave-Atmosphere Coupled Numerical Model
A common problem in the application of the coupled ocean-atmosphere general circulation models (CGCMs) without flux correction is that the simulated equatorial cold tongue in …
Song Zhenya
风险管理测度VaR和TCE的实证研究
针对单一金融产品和由多种资产组成的投资组合两种情况,用几只股票的历史收盘数据实证比较了两种先进的度量金融市场风险测度———风险值(VaR)和尾部条件期望(TCE)的有效性。结果显示,TCE比VaR更有效。
Two-stage Hydroacoustic Signal Demodulation Based on Attention and Generative Lightweight Folding U-network
Hydroacoustic signal demodulation plays a crucial role in underwater communication systems. Recently, deep learning-based methods have gained popularity due to their ability to …
ST-SSNet: Spatio-temporal feature fusion-based DOA estimation network for underwater array signals
For Underwater Internet of Things (UIoT) applications, the accurate and efficient estimation of the direction of arrival (DOA) is fundamental to technologies such as node …