Subjects: Library Science，Information Science >> Library Science submitted time 2023-07-28
Abstract： Geographical indication of agricultural products is an important way to create brand effect of agricultural products. In order to explore the path mechanism of consumers' purchase of agricultural products with geographical indications, online reviews in JD.COM were collected by Python, and external clues influencing consumers' purchase intention were summarized through Snownlp sentiment analysis, TF-IDF algorithm and LDA topic clustering: product quality, logistics and distribution, e-commerce service, product cost performance, country of origin image and brand reputation. Based on the theory of consumer perceived value, this paper constructs a theoretical model of external cues affecting consumers' purchase intention, and analyzes the mechanism between external cues, perceived value and consumers' purchase intention through structural equation model. The results show that the external clues of geographical indication agricultural products positively affect consumers' purchase intention. The external clues of geographical indication agricultural products affect consumers' purchase intention through different dimensions of perceived value, and the functional perceived value is greater than the emotional perceived value. It aims to solve the "black box" problem of the internal influence mechanism of consumers' purchase intention of geographical indication agricultural products and provide decision support for the marketing of geographical indication agricultural products.
Peer Review Status:
Awaiting Review
Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/Significance] This is the first systematic description and overall evaluation of the emergence, development and evolution of the Chinese librarians’ alliance in North America, which deeply reveals and accurately judges the identity and function of the alliance in the development of the global library and the construction of overseas Chinese society. [Method/Process] The formation process, structural evolution and strategic direction of the Chinese librarians’ alliance in North America were sorted out comprehensively. This paper focused on the background, process and impact of the formation of organizations such as the Council on East Asian Libraries, the Chinese American Librarians Association, and the Society for Chinese Studies Librarians, and analyzed the strategic significance of the cooperative alliance organizations of the China-US academic libraries alliance organizations in the era. [Result/Conclusion] The Chinese librarians’ alliance in North America has gone through the development stages of beginning, maturity, and deepening, moving from an early scattered group to a regional association, to a high-level qualitative change in the membership structure, to the creation of a deeply integrated professional model, and finally to a transnational alliance with the Chinese library community, building a strategic pattern of internal and external synergy and two-way win-win.
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-18 Cooperative journals: 《材料研究学报》
Abstract： Evolution of drawing texture for A6 aluminum conductor with the drawing process was investigated by macro and micro-texture analysis. The results show that the fiber-like deformation texture of <111> and <100> formed in the drawing process, and <100> texture reduced while <111> texture enhanced with the increasing strain. The distribution of deformed texture was of homogeneity along the radial direction of wire: the deform texture transformed from strong <100> texture (~52% volume fraction) in the surface to strong <111> texture (~55%) in the center by moderate strains; the radial gradient texture was weakened and a strong <111> texture (>70%) formed in the overall wire by high strains. Moreover, the core hardness of the wire was higher than that of the surface, which attributed to the texture gradient distribution along the radial. Adjusting the drawing process to optimize the dislocation density and texture as well as their distribution in the wire is an effective route to improve the strength and conductive properties of the A6 aluminum conductor.
Subjects: Geosciences >> Other Disciplines of Geosciences submitted time 2019-09-11 Cooperative journals: 《干旱区研究》
Abstract：以新疆有无人为干扰土壤的实测光谱为数据源，利用去包络线法提取其吸收特征和敏感波段，建立了多种基于去包络线法的土壤盐分估算的一元、多元线性回归模型。结果表明：① 去包络线法能明显增强土壤光谱在400~610 nm和610~800 nm波段的吸收特征；② 有/无人为干扰区土壤盐分含量与去包络线一阶微分的相关性较好，敏感波段在无人为干扰区集中于可见光区(400~800 nm)，而人为干扰区为可见光-近红外区(400~2 400 nm)；③ 土壤盐分值预测模型精度从高到低在有/无人为干扰区基本上是：去包络线6个吸收特征模型>去包络线和去包络线一阶微分敏感波段模型>去包络线3个吸收特征模型>单个吸收特征模型。有/无人为干扰区最佳预测模型的[WTBX]R2[WTBZ]分别为0.86和0.92。无人干扰区最优模型(6个吸收特征)的相对分析误差（RPD）达到了3.06，大于3，说明其能极好并且稳定的预测此区土壤盐分值。
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