The progress of common prosperity in China

This paper examines the extant research progress of the common prosperity in China. Centrals on the topic of common prosperity, the author reviews the progress of Chinese common prosperity from a couple of perspectives: namely the relations between common prosperity and the essence of 20th National Congress of the Communist Party of China; the path and measures to achieve the common prosperity; the nexus among digital economy transition, financial inclusion, household consumption, regional coordinative development and common prosperity; and finally the measurement of the current level of common prosperity. In general, the theme of common prosperity has aroused wide focus in the academic community at home and abroad. From the perspective of literature review in particular, this paper summarizes the current research progress associated with common prosperity in China

Drilling trajectory measurement method while drilling for drilling robot forrockburst prevention based on wireless electromagnetic transmission

Drilling robot for rockburst prevention is a necessary equipment for achieving unmanned pressure relief in coal mines with high in-situ stress. Developing a reliable drilling trajectory measurement system while drilling is an important measure to ensure the effectiveness of drilling pressure relief. Based on analysis of basic principle of drilling trajectory measurement while drilling, a drilling trajectory measurement drill rod based on wireless electromagnetic transmission technology is developed. The spectral efficiency and anti-noise performance of different electromagnetic signal modulation methods are analyzed, and the FSK modulation and demodulation process for drill rod attitude signals are designed, so as to develop a weak signal conditioning system that amplifies before filtering. The Corresponding functional circuits are designed and tested using Multisim software, and each circuit module met the design requirements. A comparative analysis is conducted on the accuracy and execution efficiency of five trajectory calculation algorithms, and the mean angle full range method is chosen for drilling trajectory calculation. The vibration error processing method for inertial measurement unit measurement data based on wavelet filtering is studied, and the effectiveness of wavelet filtering algorithm in improving attitude angle calculation accuracy is also verified. A drilling depth measurement method based on wire displacement sensors and robot action markers is proposed, and the surface and underground experiments are conducted. The experimental results show that the designed weak signal conditioning system can achieve the reception and processing of weak signals in underground coal mines. The drilling depth measurement method based on wire displacement sensors and robot action markers can improve the fitting accuracy of the drilling trajectory

Room temperature 2D ferromagnetism in few-layered 1TT-CrTe2_{2}

Spin-related electronics using two dimensional (2D) van der Waals (vdW) materials as a platform are believed to hold great promise for revolutionizing the next generation spintronics. Although many emerging new phenomena have been unravelled in 2D electronic systems with spin long-range orderings, the scarcely reported room temperature magnetic vdW material has thus far hindered the related applications. Here, we show that intrinsic ferromagnetically aligned spin polarization can hold up to 316 K in a metallic phase of 1$T$-CrTe$_{2}$ in the few-layer limit. This room temperature 2D long range spin interaction may be beneficial from an itinerant enhancement. Spin transport measurements indicate an in-plane room temperature negative anisotropic magnetoresistance (AMR) in few-layered CrTe$_{2}$, but a sign change in the AMR at lower temperature, with -0.6$\%$ at 300 K and +5$\%$ at 10 K, respectively. This behavior may originate from the specific spin polarized band structure of CrTe$_{2}$. Our findings provide insights into magnetism in few-layered CrTe$_{2}$, suggesting potential for future room temperature spintronic applications of such 2D vdW magnets.Comment: 9 Pages, 4 Figure

Draft genome sequence of the Tibetan antelope

The Tibetan antelope (Pantholops hodgsonii) is endemic to the extremely inhospitable high-altitude environment of the Qinghai-Tibetan Plateau, a region that has a low partial pressure of oxygen and high ultraviolet radiation. Here we generate a draft genome of this artiodactyl and use it to detect the potential genetic bases of highland adaptation. Compared with other plain-dwelling mammals, the genome of the Tibetan antelope shows signals of adaptive evolution and gene-family expansion in genes associated with energy metabolism and oxygen transmission. Both the highland American pika, and the Tibetan antelope have signals of positive selection for genes involved in DNA repair and the production of ATPase. Genes associated with hypoxia seem to have experienced convergent evolution. Thus, our study suggests that common genetic mechanisms might have been utilized to enable high-altitude adaptation

Learning Outcomes of a Hybrid Online Virtual Classroom and In-Person Traditional Classroom during the COVID-19 Pandemic

This paper explores the effects of using a hybrid virtual/traditional classroom, a blended teaching and learning approach, on undergraduate learning outcomes during the initial stage of the COVID-19 pandemic. The study aimed to investigate the prominent problems that appeared in the process of online teaching and learning and to measure the impact of the COVID-19 pandemic on undergraduates’ learning outcomes in public universities in China. The field of specialization of the subjects of this study is under the rubric of social science and higher education. We designed and conducted a pilot survey to identify students’ perspectives on the key issues and experiences of the use of distance-learning through an online virtual classroom in the initial phase of the COVID-19 pandemic. In addition, we applied a binary logistic regression model to real data from two different economics course exams to measure the short-term impacts of using the two different learning environments on the undergraduates’ performance outcomes. The results indicate a statistically significant negative impact of using virtual classrooms on undergraduate learning outcomes. By contrast, in-person traditional classrooms had more desirable learning outcomes. Moreover, the hybrid approach proved to be more effective than the use of online virtual classrooms alone

Is Plastic Bag Ordinance Effective? Evidence from Carbon Emissions in China

China has enacted the ordinance of plastic shopping bags since June 1 of 2008, which stipulates the bag thickness should be greater than or equal to 25 micrometers and consumers should pay for each bag they consume. However, the overall effect of the ordinance is lower-than-expected. This paper qualifies the carbon emissions associated with plastic shopping bag consumption in a fifteen year time series. The results indicate that, except for 2008, carbon emissions are on a continuous increase during this period. With respect to carbon emissions in 2008, there does appear a local minimum. Specifically, the carbon emissions relating to plastic bags in 2008 dropped 0.87% when compared with the emissions of 2007. This is not to suggest that the ordinance is effective in the long term, just that there is a slight carbon emission reduction in 2008. The transitory reduction of carbon emissions should be more attributed to the impact of Beijing Olympic Games than the effectiveness of the ordinance in hindsight. From 2009 on, the amount of carbon dioxide emissions generated by plastic shopping bags grows by 0.7-0.8% annually. Also, a two-child policy has taken into effect since 2011 which results in the net increase rate of entire population by 0.05% annually. When taken Beijing 2008 Olympic Games as well as the two-child population policy effect into consideration, it thus implies that the plastic bag ordinance may not be much effective to curb the bag usage in the long run. The theoretical and practical implications of the findings are discussed.</jats:p

The Evaluation of Shared Prosperity: A Case from China

This research investigates the disparities, trends and spillovers of shared prosperity for all in China during the period of 2012&ndash;2021. Taking a representative region consisting of 18 urban and rural areas as a case study, using 10 indicators such as economic development, population density and education level, along with the spatial lag model, we explore the impact of social and economic factors on common prosperity as well as the associated spillovers. Results revealed that there existed huge regional disparities in common prosperity in the short term, namely the unbalanced level of prosperity across China&rsquo;s mainland, while in the long term, the common prosperity level appears to be gradually enhanced with the convergence of income ratio lines. Meanwhile, common prosperity is spatially correlated with each other, with the spatial distribution features of high&ndash;high and low&ndash;low agglomerations. Based on the model analysis, there are mixed spillovers in the evolution of common prosperity: factors like education level and population density have positive spillovers while the rest of the factors have negative spillovers. To recap, population density and education level can significantly abridge the disparities in urban and rural areas