Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] With the background of the media convergence and the case study of Hangzhou Public Library's marketing practice, the combination of public library's marketing with media convergence is analyzed to guide public libraries to carry out marketing better. [Method/process] This paper adopted the the case study method to analyze the marketing case of Hangzhou Public Library, outlined the possible routes, and proposed some thoughts and suggestions. [Result/conclusion] In the age of media convergence, public libraries should explore the advantages of media convergence in marketing and improve the library marketing, and promote the social awareness of public libraries and further improve the social status and impact of public libraries.
Subjects: Environmental Sciences, Resource Sciences >> Basic Disciplines of Environmental Science and Technology submitted time 2020-06-21 Cooperative journals: 《干旱区研究》
Abstract：干旱区湿地在改善地区生态环境，维护地区生态稳定等方面发挥着重要作用，研究干旱区湿地土壤碳（C）、氮（N）、磷（P）等元素的生态化学计量学特征，有助于深入了解干旱区湿地土壤养分的供给能力及循环与平衡机制。本文以河西走廊西段，疏勒河中下游的草本沼泽（T1）和季节性咸水沼泽（T2）土壤为研究对象，分析了这两种沼泽湿地土壤C、N、P生态化学计量学特征及其影响因素。结果表明：① 0～100 cm土壤C/N、N/P、C/P均为T2（15.07，5.94，98.01）＞T1（12.49，2.50，30.22）；随土层深度的增加，土壤C/N、N/P、C/P均在T1有两个峰值（0～10 cm和中间层），T2有一个峰值（中间层）。② 0～100 cm土壤C/N、N/P、C/P空间变异性大，且均为T2＞T1。③ T1和T2土壤的N/P与土壤水分呈极显著正相关（P<0.01），C/P与土壤水分、全N呈极显著正相关（P<0.01），与碱解N呈显著正相关（P<0.05）；T2土壤C/N、N/P、C/P与土壤容重呈极显著正相关（P<0.01），C/N与土壤水分呈极显著的正相关（P<0.01），N/P与土壤有机C呈显著正相关（P<0.05）；T1土壤N/P与土壤有机C呈极显著正相关（P<0.01）。④ 土壤水分是影响两种沼泽湿地土壤C、N、P计量比的关键因子。因此，保护干旱区湿地土壤关键在于采取合理的节水用水措施，该结果可为干旱区湿地土壤保护、管理以及生态恢复提供科学依据。
Subjects: Environmental Sciences, Resource Sciences >> Basic Disciplines of Environmental Science and Technology submitted time 2020-06-19 Cooperative journals: 《干旱区研究》
Abstract：干旱区湿地在改善地区生态环境，维护地区生态稳定等方面发挥着重要作用，研究干旱区湿地土壤碳（C）、氮（N）、磷（P）等元素的生态化学计量学特征，有助于深入了解干旱区湿地土壤养分的供给能力及循环与平衡机制。本文以河西走廊西段，疏勒河中下游的草本沼泽（T1）和季节性咸水沼泽（T2）土壤为研究对象，分析了这两种沼泽湿地土壤C、N、P生态化学计量学特征及其影响因素。结果表明：① 0～100 cm土壤C/N、N/P、C/P均为T2（15.07，5.94，98.01）＞T1（12.49，2.50，30.22）；随土层深度的增加，土壤C/N、N/P、C/P均在T1有两个峰值（0～10 cm和中间层），T2有一个峰值（中间层）。② 0～100 cm土壤C/N、N/P、C/P空间变异性大，且均为T2＞T1。③ T1和T2土壤的N/P与土壤水分呈极显著正相关（P<0.01），C/P与土壤水分、全N呈极显著正相关（P<0.01），与碱解N呈显著正相关（P<0.05）；T2土壤C/N、N/P、C/P与土壤容重呈极显著正相关（P<0.01），C/N与土壤水分呈极显著的正相关（P<0.01），N/P与土壤有机C呈显著正相关（P<0.05）；T1土壤N/P与土壤有机C呈极显著正相关（P<0.01）。④ 土壤水分是影响两种沼泽湿地土壤C、N、P计量比的关键因子。因此，保护干旱区湿地土壤关键在于采取合理的节水用水措施，该结果可为干旱区湿地土壤保护、管理以及生态恢复提供科学依据。
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-12-13 Cooperative journals: 《计算机应用研究》
Abstract： According to the slow convergence speed and low searching precision of traditional backtracking search optimization algorithm, this paper proposed an improved algorithm based on cellular automaton and orthogonal experimental design. Firstly, the algorithm introduced orthogonal experimental design method into the crossover operator to obtain representative high-quality offspring individuals; Then based on the neighbor model of cellular automaton, the method carried out the orthogonal crossover operation of multiple parents in the domain for individuals, which was beneficial to improve the mining capacity and search efficiency of the algorithm; Finally, in order to balance the global searching and local searching ability of the algorithm, the method introduced the dynamic proportional weight of excellent individuals into the cross-population to select and update them, with adopted a new dynamic variation equation. The simulation experiments selected 12 standard test functions and compared with 6 other well-behaved algorithms, the results show that the improved algorithm has obvious advantages in convergence speed and optimization accuracy.
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