作者机构:
[Luo, H; Aguilar-Cruz, Paola Julie; Wang, Peiyu; Luo, Heng] Cent China Normal Univ, Fac Artificial Intelligence Educ, Wuhan 430079, Peoples R China.;[Aguilar-Cruz, Paola Julie] Univ Amazonia, Fac Educ, Licenciatura Lenguas Extranjeras con Enfasis ingle, Florencia 180001, Colombia.;[Xiang, Zongping] Cent China Normal Univ, Sch Foreign Languages, Wuhan 430079, Peoples R China.
通讯机构:
[Luo, H ; Xiang, ZP ] C;Cent China Normal Univ, Fac Artificial Intelligence Educ, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Sch Foreign Languages, Wuhan 430079, Peoples R China.
摘要:
Game-based learning (GBL) places high demand on educational resources and has been widely practiced in classrooms in many developed countries; however, few studies on GBL and its influencing factors have been conducted in developing countries. To address this research gap, a mixed-methods study was conducted in a state high school in the Amazon region of Colombia with 64 tenth-graders who were learning English as a foreign language to identify the factors that affect learners' learning outcomes when serious games are applied to vocabulary learning, with a specific focus on learning engagement. This study drew on both quantitative and qualitative data collected from surveys, interviews, and pre- and post-tests. The results showed that engagement and prior knowledge can positively predict GBL outcomes, while contextual factors and family condition had an adverse impact on GBL outcomes (Adjusted R-2 = 0.635, p < 0.01). The results also indicated that a male student with a higher level of prior knowledge would be more likely to achieve good grades in GBL. Based on the study results, several implications are proposed for incorporating serious games for vocabulary learning in less-developed regions. This study results provide important practical implications for high schools in developing countries to implementing GBL.
作者机构:
[Zhang, Man] Cent China Normal Univ, Sch Foreign Languages, Wuhan, Peoples R China.;[Zhang, Man] Humboldt Univ, Fac Language Literature & Humanities, Berlin, Germany.
通讯机构:
[Man Zhang] S;School of Foreign Languages, Central China Normal University , Wuhan, China<&wdkj&>Faculty of Language, Literature and Humanities, Humboldt University of Berlin , Berlin, Germany . E-mail: zm@ccnu.edu.cn
摘要:
Until now, there has been very little unified analysis of metadiscourse across speech and writing. Drawing on a reflexive metadiscourse model, this article conducts a multidimensional analysis of metadiscourse across 10 spoken and written registers in a corpus of 626 texts. Two metadiscourse dimensions, participants’ interaction and discourse presentation, are identified. The more interactive registers are more prominently marked by participants’ interaction, and the more informational registers by discourse presentation. Along metadiscourse dimensions, the 10 registers are lumped into 6 clusters: ‘discussion broadcasts and public conversations’, ‘scripted speeches and unscripted speeches’, ‘general prose and nondiscussion broadcasts’, ‘press and fiction’, ‘casual conversations’, and ‘academic prose’. Metadiscourse markers of both dimensions are frequently used in registers of the first two clusters which are highly interactive and informational, while they rarely occur in registers of the next two clusters which have low interactive or informational focuses. Metadiscourse markers of participants’ interaction are pervasive in the highly interactive register (casual conversations), and those of discourse presentation in the highly informational register (academic prose).
作者机构:
[He, Ming; Liu, Minyang; He, Hongyue; Xu, Bing; Zhang, Qiao] Army Engn Univ PLA, Coll Command & Control Engn, Nanjing 210007, Peoples R China.;[Liu, Minyang] Cent China Normal Univ, Sch Foreign Languages, Wuhan 430079, Peoples R China.
通讯机构:
[He, M.] C;College of Command and Control Engineering, China
关键词:
Costs;Cost function;Convex functions;Multi-agent systems;Licenses;Protocols;Linear programming;Cucker-Smale model;distributed optimization;multiagent systems
摘要:
The Cucker-Smale (C-S) model describes an interacting particle system in which the connection weights decrease with increasing distance. This model features emergent behaviors by which the velocities of the particles converge to a common value without a central command. However, the consensus value of the original C-S flocking model is restricted to the leader-following consensus or average consensus. Moreover, for the short-range communication-based C-S model, consensus can only be obtained for specific initial configurations. In this paper, the short-range communication-based C-S model is extended to achieve distributed optimization, where the consensus value optimizes the objective function of the group for any bounded initial configuration. Simulation examples are provided to demonstrate the effectiveness of our approach.
作者机构:
[Yang, Xujie; Jiang, Yan] Cent China Normal Univ, Key Lab Geog Proc Anal & Simulat Hubei Prov, Wuhan 430079, Peoples R China.;[Yue, Zhiying; Deng, Xuwei] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China.;[Zheng, Ying] Cent China Normal Univ, Sch Foreign Languages, Wuhan 430079, Peoples R China.
通讯机构:
[Jiang, Yan] C;Cent China Normal Univ, Key Lab Geog Proc Anal & Simulat Hubei Prov, Wuhan 430079, Peoples R China.
关键词:
Donghu Lake;Landsat;chlorophyll-a (Chl-a);band combination;eutrophication;spatial and temporal dynamics
摘要:
Chlorophyll a (Chl-a) concentration, which reflects the biomass and primary productivity of phytoplankton in water, is an important water quality parameter to assess the eutrophication status of water. The band combinations shown in the images of Donghu Lake (Wuhan City, China) captured by Landsat satellites from 1987 to 2018 were analyzed. The (B4 - B3)/(B4 + B3) [(Green-Red)/(Green+Red)] band combination was employed to construct linear, power, exponential, logarithmic and cubic polynomial models based on Chl-a values in Donghu Lake in April 2016. The correlation coefficient (R-2), the relative error (RE) and the root mean square error (RMSE) of the cubic model were 0.859, 9.175% and 11.194 mu g/L, respectively and those of the validation model were 0.831, 6.509% and 19.846 mu g/L, respectively. Remote sensing images from 1987 to 2018 were applied to the model and the spatial distribution of Chl-a concentrations in spring and autumn of these years was obtained. At the same time, the eutrophication status of Donghu Lake was monitored and evaluated based on the comprehensive trophic level index (TLI). The results showed that theTLI( n-ary sumation ) of Donghu Lake in April 2016 was 63.49 and the historical data on Chl-a concentration showed that Donghu Lake had been eutrophic. The distribution of Chl-a concentration in Donghu Lake was affected by factors such as construction of bridges and dams, commercial activities and enclosure culture in the lake. The overall distribution of Chl-a concentration in each sub-lake was higher than that in the main lake region and Chl-a concentration was highest in summer, followed by spring, autumn and winter. Based on the data of three long-term (2005-2018) monitoring points in Donghu Lake, the matching patterns between meteorological data and Chl-a concentration were analyzed. It revealed that the Chl-a concentration was relatively high in warmer years or rainy years. The long-term measured data also verified the accuracy of the cubic model for Chl-a concentration. The R-2, RE and RMSE of the validation model were 0.641, 2.518% and 22.606 mu g/L, respectively, which indicated that it was feasible to use Landsat images to retrieve long-term Chl-a concentrations. Based on longitudinal remote sensing data from 1987 to 2018, long-term and large-scale dynamic monitoring of Chl-a concentrations in Donghu Lake was carried out in this study, providing reference and guidance for lake water quality management in the future.
摘要:
In the context of global fighting against the unexpected COVID-19 pandemic, how to promote the public implementation of preventive behavior is the top priority of pandemic prevention and control. This study aimed at probing how the media would affect the public's preventive behavior and excessive preventive intention accordingly. Data were collected from 653 respondents in the Chinese mainland through online questionnaires and further analyzed by using partial least squares structural equation modeling (PLS-SEM). Taking risk perception, negative emotions, and subjective norms as mediators, this study explored the impact of mass media exposure and social networking services involvement on preventive behavior and excessive preventive intention. Based on differences in the severity of the pandemic, the samples were divided into the Wuhan group and other regions group for multi-group comparison. The results showed that mass media exposure had a significant positive impact on subjective norms; moreover, mass media exposure could significantly enhance preventive behavior through subjective norms, and social networking services involvement had a significant positive impact on negative emotions; meanwhile, social networking services involvement promoted excessive preventive intention through negative emotions.
期刊:
Agro Food Industry Hi-Tech,2017年28(1):1205-1208 ISSN:1722-6996
通讯作者:
Zhang Rui
作者机构:
[Zhang Rui] Cent China Normal Univ, Sch Foreign Languages, Wuhan 430079, Peoples R China.;[Zhang Rui] Hubei Univ, Sch Foreign Languages, Wuhan 40062, Peoples R China.;[Yang Hua-Yong] Wuhan Univ Sci & Technol, City Coll, Dept Informat Engn, Wuhan 430083, Peoples R China.
通讯机构:
[Zhang Rui] C;[Zhang Rui] H;Cent China Normal Univ, Sch Foreign Languages, Wuhan 430079, Peoples R China.;Hubei Univ, Sch Foreign Languages, Wuhan 40062, Peoples R China.
关键词:
Autonomous learning;Classroom network environment;Foreign language learning mode
摘要:
The rapid development and popularization of the network technology in the world provides important technologies and supports for the development and reform of the foreign language teaching mode in colleges and universities. With the rapid development of globalization, more and more international trade and international cultural exchanges have been produced, and the importance of foreign language education has been widely concerned. In this paper, several learning models and theories of the autonomous learning were deeply studied; the relationship between improving the autonomous learning ability and the network teaching was analyzed; advantages of the application of the network environment into the foreign language learning were obtained. This shows that the network can effectively improve students' autonomous learning abilities.
作者机构:
[Zhou, Bin; Zhao, Shuwen] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China.;[Liu, Wei] Cent China Normal Univ, Sch Foreign Languages, Wuhan 430079, Peoples R China.;[Yang, Yushi; Wang, Youfa; Xue, Xianya] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China.;[Zhao, Zhiyong] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China.
通讯机构:
[Zhou, Bin; Wang, Youfa] W;Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China.;Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China.
摘要:
Correction for ‘Enhanced upconversion luminescence and modulated paramagnetic performance in NaGdF4:Yb,Er by Mg2+ tridoping’ by Shuwen Zhao et al., RSC Adv., 2016, 6, 81542–81551.
作者机构:
[Zhou, Bin; Zhao, Shuwen] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China.;[Liu, Wei] Cent China Normal Univ, Sch Foreign Languages, Wuhan 430079, Peoples R China.;[Yang, Yushi; Wang, Youfa; Xue, Xianya] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China.;[Zhao, Zhiyong] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China.
通讯机构:
[Youfa Wang; Bin Zhou] S;School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China<&wdkj&>State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
摘要:
The present study analysed the readability of abstracts and full texts of the articles published in four journals of information science from 2003 to 2012. The results showed that the abstracts are very difficult to read in terms of readability indices such as FRE and SMOG. The results also showed that some of the readabilities of the abstracts and full texts changed in the examined decade, though the effect sizes were minuscule. Meanwhile, the readability scores were not significantly correlated with the number of citations. Although the readability issue of an academic text is secondary to the impact of the study, it is not suggested that the academic writers not pay any attention to the readability issue. On the contrary, it would be better if the technical texts be more readable and clearer after the knowledge or information is accurately and academically conveyed.