Your conditions: 李永明
  • Algorithm literacy in the era of digital intelligence : constituent elements, hierarchical framework and development model

    Subjects: Library Science,Information Science >> Library Science submitted time 2024-04-17

    Abstract: Purpose/Significance The change of technology environment in the era of digital intelligence puts forward new requirements for users ’ personal literacy ability. Improving algorithm literacy helps users adapt to the development of algorithm society. Method/Process This paper systematically sorts out the development context of algorithmic literacy, analyzes the conceptual connotation of algorithmic literacy, summarizes the main characteristics of algorithmic literacy, refines the constituent elements of algorithmic literacy, takes algorithmic ethics as the bottom line, and takes cognition, attitude and skill as the division standard to construct the hierarchical framework of algorithmic literacy, and combines the hierarchical framework and time dimension to build the development model of algorithmic literacy. Result/Conclusion Algorithm literacy is composed of algorithm awareness, algorithm knowledge, algorithm attitude, algorithm ability and algorithm ethics. The five elements are integrated to form an algorithm literacy framework including cognitive attitude layer, knowledge reserve layer, technical ability layer and ethical and moral layer. Multi-agent collaboration builds a development model of algorithm literacy.

  • Development and Empirical Research of Mobile Short Video APP User Experience Scale Based on Perceived Affordance

    Subjects: Library Science,Information Science >> Library Science submitted time 2024-04-17

    Abstract: Purpose/Significance Developing a user experience scale for mobile short video APP, and provide reliable suggestions for the version update iteration of mobile short video APP. Method/Process Based on the theory of perceived affordance, a qualitative scale was constructed according to the results of literature research and group discussion. The scale was quantitatively optimized through pre-investigation, and data were obtained through formal investigation. Exploratory factor analysis and confirmatory factor analysis were carried out on the effective data, and the formal scale was revised and formed. Result/Conclusion The formal scale includes five main dimensions, 10 sub-dimensions and 30 items of perceived physical affordance, perceived cognitive affordance, perceived emotional affordance, perceived control affordance and perceived participation affordance, and uses the formal scale to measure the user experience level of mobile short video APP.

  • Knowledge Service Mode of University Libraries from the Perspective of Value Co-creation

    submitted time 2024-04-03 Cooperative journals: 《农业图书情报学报》

    Abstract: [Purpose/Significance] Multiple elements such as the diversification and complexity of knowledge service scenarios, the interdisciplinary content, the subdivision and embedding of service needs, the individual wisdom of different methods, and the subjective initiative of supply and demand have all prompted university libraries to continuously promote the innovative development of their knowledge service models. Attracting, guiding, supporting and encouraging stakeholders to participate in the creation of service value has become the future development trend and an important strategic choice of innovative service models. As the stakeholders of university libraries, users are considered to be included in the knowledge service of libraries, and participate in the construction of knowledge service mode of university libraries from the perspective of value co-creation, so as to provide new ideas and new ways for the sustainable development and innovative development of knowledge services in university libraries. [Method/Process] The theory of value co-creation emphasizes the importance of users ' participation in value creation. Its core is interaction, and attaches importance to the value creation of stakeholders in the process of interaction. Therefore, users are introduced to participate in the knowledge service of university libraries to create value. Based on the theory of value co-creation, this paper integrates the elements of knowledge service mode of university libraries, and explores the architecture design and implementation process of knowledge service mode of university libraries from the perspective of value co-creation. [Results/Conclusions] The elements of the knowledge service model of university libraries from the perspective of value co-creation are composed of four parts: participants, service content, service scenarios and service means. The four elements are integrated into the architecture design of the knowledge service model of university libraries from the perspective of value co-creation. The realization process is divided into three stages: preparation stage, value action implementation stage, value evaluation and innovation stage, and the realization process is explained in detail. Based on the theory of value co-creation, it is necessary and feasible to construct the knowledge service mode of university libraries at this stage. It can better adapt to the knowledge service situation, express the user's knowledge service demand, improve the quality of knowledge service and user satisfaction, and provide reference for users to participate in the value creation of university library knowledge service with high quality. In future research, the combination of value co-creation theory will further explore the modes and methods of users' participation in university libraries knowledge services.

  • The User Development and User Participation in Zhihu and Its Enlightenment to the Library Knowledge Service

    Subjects: Library Science,Information Science >> Library Science submitted time 2023-08-26 Cooperative journals: 《图书情报工作》

    Abstract: [Purpose/significance] Zhihu is a successful knowledge Q&A community. Its successful experience in value co-creation from the perspective of user participation is helpful for promoting the library knowledge service.[Method/process] The case analysis method was adopted in this paper. This research analyzed the user development path from three aspects-the initial stage strategy, the expansion phase strategy and the user viscous retention strategy. This research also analyzed the user participation mechanism of Zhihu from three aspects-the user participation in question editing, the user participation in the content quality evaluation and the user participation in the knowledge transmission.[Result/conclusion] The enlightenment of Zhihu case to the library knowledge service can be summed up in three aspects-understanding the value of users in the library knowledge service and developing the "lead user", paying attention to the user guidance mechanism to create a good atmosphere of participation, improving user experience and optimizing the library knowledge service platform.

  • Influence Mechanism of User Participation on Library Knowledge Service Performance

    Subjects: Library Science,Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》

    Abstract: [Purpose/significance] User participation is an important means for libraries to integrate users' wisdom to create service value. Establishing the importance and rationality of user participation is helpful to strengthen its role and effect and provide theoretical support and practical guidance for user value mining in library knowledge service.[Method/process] From the perspective of user participation, this paper explored the performance of library knowledge service. The theoretical model and research hypothesis of the impact of user participation on library knowledge service performance were put forward, and questionnaire survey was designed to obtain data. It carried out descriptive statistical analysis, exploratory analysis and confirmatory analysis via SPSS and Amos, and demonstrated the impact model of user participation on library knowledge service performance.[Result/conclusion] The results show that user participation has a positive impact on library knowledge service performance, in which user perceived participation value and user perceived interaction value play a mediating role. The influence of different participation behavior on library knowledge service performance is different, and perceived participation value and user perceived interaction value on library knowledge service performance are also different.

  • 复合植物提取物替代饲用抗生素对断奶仔猪生长性能和血清指标的影响

    Subjects: Biology >> Zoology submitted time 2017-11-08 Cooperative journals: 《动物营养学报》

    Abstract:本试验旨在研究饲粮中添加复合植物(含石榴皮、艾叶、南五味子和吴茱萸)提取物替代饲用抗生素对断奶仔猪生长性能和血清指标的影响。试验1:选取8 kg、30日龄左右的断奶仔猪160头,随机分为4组,各组分别在基础饲粮中添加金霉素107 mg/kg+黄霉素40 mg/kg(对照)及0.05%、0.10%和0.20%的复合植物提取物,每组4个重复,每个重复10头仔猪,试验期28 d。试验2:选取11 kg、40日龄左右的断奶仔猪120头,随机分为3组,无抗组采用基础饲粮,另外2组分别在基础饲粮中添加金霉素67 mg/kg+黄霉素20 mg/kg(抗生素组)和0.10%的复合植物提取物组,试验期35 d。试验1结果显示:与对照组相比,各复合植物提取物组仔猪平均日增重(ADG)、平均日采食量(ADFI)和料重比(F/G)均无显著变化(P>0.05),且0.10%的添加量具有较好的ADG,比对照组提高2.44%。试验2结果显示:与无抗组相比,0.10%的复合植物提取物可使仔猪ADG显著提高21.39%(P<0.05),使血清中白蛋白(ALB)、胆固醇(CHOL)、低密度脂蛋白胆固醇(LDL-C)和一氧化氮(NO)含量均显著降低(P<0.05),谷胱甘肽过氧化物酶(GSH-Px)活力显著升高(P<0.05),铜蓝蛋白(CER)活力显著降低(P<0.05);与抗生素组相比,0.10%的复合植物提取物可使仔猪ADG显著提高15.07%(P<0.05),使血清中尿素氮(UN)、LDL-C和NO含量均显著降低(P<0.05)。综上所述,0.10%的复合植物提取物可替代饲用抗生素(金霉素+黄霉素),提高仔猪的生长性能,具有抗应激和抗氧化功能。