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Youyang folk songs represent a significant component of China's intangible cultural heritage from Youyang County in Chongqing Municipality, China. The study objective is to analyze the education literacy in preserving and transmitting Youyang Chinese folk songs within the cultural context of Chongqing Municipality, China. The research content encompasses various aspects, including integrating folk songs into educational curricula, artistic engagement in rural communities, government initiatives for transmission enhancement, and preservation through publication and book distribution. The research site primarily focuses on Youyang County, renowned for its cultural heritage and ethnic traditions. Three key informants include governmental bodies, educational institutions, private organizations, and individual custodians involved in preservation efforts. Data analysis involves qualitative methods such as document analysis and interviews with stakeholders. The research results highlight a concerted effort from stakeholders to preserve and transmit Youyang folk songs, emphasizing the importance of legislative support, increased funding, and community involvement in safeguarding intangible cultural heritage. Suggestions for further improvement include strengthening legislative support, increasing funding for preservation efforts, and enhancing community involvement in protecting intangible cultural heritage.

Wind-solar-electric vehicles coordinated optimization scheduling can effectively reduce the adverse effects of multiple uncertainties of wind-solar output and disorderly charging of electric vehicles on the power system. Most of the existing optimization scheduling models take the minimum equivalent load fluctuation as the optimization objective, which, only considering the overall fluctuation of equivalent load, cannot measure the matching degree of output-load, and do not consider the difference of output in different output scenarios. Therefore, a wind-solar-electric vehicles coordination scheduling method for high proportion new energy grid-connected scenarios is proposed. First, the disordered charging model of electric vehicles by Monte Carlo simulation is constructed. Then, a wind-solar output typical day classification model using Gap statistical and K-means++ is constructed based on the forecasting data of wind and solar power. Finally, taking the minimum equivalent load variance and load tracking coefficient as the double optimization objectives, a wind-solar-electric vehicles coordination optimization scheduling model is established, and the NSGA-II algorithm is used to solve it. The results demonstrate that the proposed model can effectively improve the matching degree of wind-solar output and load, and reduce the fluctuation of equivalent load, so as to reduce the adverse effects of multiple uncertainties of wind-solar output and disorderly charging of electric vehicles on the power system.

The higher the level of development of higher education, the larger its contribution to socioeconomic development. In order to predict the trend of higher education development in a country more accurately, a new methodology is employed in this study. A weakening buffer operator-based GM (1, 1) model is constructed using Kazakhstan's gross enrollment rate (GER) of higher education as the subject of study, which eliminates the disturbance of the shock perturbation system and increases prediction accuracy. Seven models with varying sample sizes are constructed. It is discovered that the short sequence prediction model outperforms the long sequence prediction model. To demonstrate the superiority of the proposed method, cubic curves and logistic models are chosen for comparison. The results of the study revealed that the cubic curve has a better fitting, but the prediction results are overly large due to the quick growth rate of the recent raw data, which is not in line with the realistic development; the logistic model has poor fitting and cannot be used for prediction; the buffer operator-based GM (1, 1) model can effectively deal with the issue of missing data or data outliers, and provide accurate predictions of the trend of higher education development. When compared to other methods, the proposed method is more practicable, reliable, and superior. [ABSTRACT FROM AUTHOR]

Dendrobium (Orchidaceae, Epidendoideae) plants have flowers with a wide variety of colors that persist for a long period throughout the year. The yellow coloration of Dendrobium flowers is mainly determined by the flavonol pathway and the flavone pathway, but the relevant biosynthesis mechanisms during vernalization remain unclear. To explore the similarities and differences in flavonoid biosynthesis in different tissues during vernalization, we selected two species of Dendrobium for a flower color study: Dendrobium capillipes Rchb (which has yellow flowers) and Dendrobium nobile Lindl (which has white flowers). We collected a total of 36 samples from six tissue types and both Dendrobium species during vernalization and subjected the samples to metabolic profiling and transcriptome sequencing. A total of 31,504 differentially expressed genes (DEGs) were identified between different tissues of the two Dendrobium species by transcriptomic analysis. However, many differentially accumulated metabolites (DAMs) and DEGs were enriched not only in the general pathway of "flavonoid biosynthesis" but also in multiple subpathways of "flavone and flavonol biosynthesis". According to a combined transcriptome and metabolome analysis, Putrescine hydroxycinnamoyl transferase 1 (LOC110093422) may be the main gene responsible for the differences in flavonoid accumulation during vernalization, which is closely associated with yellow flowers. Taken together, the results of our study preliminarily revealed the metabolites responsible for and the key genes regulating flavonoid biosynthesis during vernalization. These results provide a basis for the further study of the molecular mechanism of flavonoid synthesis during vernalization. [ABSTRACT FROM AUTHOR]

Reinforced concrete and steel (RCS) composite moment frame structures consist of reinforced concrete (RC) columns and steel (S) beams. Such systems combined with several advantages of the two structural members have larger structural stiffness, lower cost, and faster construction speed than the traditional concrete or steel frame system to be a particularly well viable alternative for use in seismic risk regions. The calculation of joint shear capacity is an essential step in seismic design. This study introduces the typical configuration characteristics of the RCS connection and reviews the state of the art of the shear bearing capacity in terms of failure models, shear distribution mechanisms, calculation mechanisms, and requirements given in the experimental and theoretical study to provide reference and foundation for the subsequent study. Finally, the development of recommendations and further research studies on seismic performance of RCS composite frames are provided. [ABSTRACT FROM AUTHOR]

The practical applications of lithium metal anodes have been severely hindered by the Li dendrite issue. Herein, a dual structure‐material design strategy was developed to fabricate a new type of separator using interconnected hollow porous polyacrylonitrile (PAN) nanofibers (HPPANF), which delivered controllable and dendrite‐free Li depositions. The interconnected mesopores on HPPANF bridged the hollow interiors with the outside voids among the fibers, enabling outstanding electrolyte uptake capabilities for high ion conductivity, and nano‐level wetted electrolyte/anode interface for uniform Li plating/stripping. In parallel, the HPPANF separator enriched with polar groups acted as an exceptional polymer‐based solid‐state electrolyte, providing 3D ion channels for the transport of Li ions. Benefiting from the dual structure‐material design, the HPPANF separator induced uniform Li ion flux for dendrite‐free Li depositions, which caused enhanced cycling stability (1300 h, 3 mA cm−2). This work demonstrates a new method to stabilize Li metal anodes through rational separator design. [ABSTRACT FROM AUTHOR]