260 research outputs found
Explore Ways to Promote the Popularization of Rural Culture Revitalization
The history of language and the history of culture complement each other. They can help and inspire each other. Language and culture are closely related. As a part of culture, language is not only a cultural phenomenon, but also a carrier of culture. Language and cultural resources are not only the elements of building a harmonious ecology of language, but also the path and entry point for language to help rural revitalization in ethnic minority areas. Rural revitalization cannot be achieved without cultural revitalization, and cultural revitalization cannot be achieved without language. Popularizing work has played a very important role in promoting rural revitalization
Investigation and Exploration of ‘Student-Centered and Teacher-Led’ Teaching Model in English Medium Instruction (EMI) Calculus Course
The internationalization of higher education in China is constantly improving with an increasing level of diversification and globalization of education. High-level international English Medium Instruction (EMI) course is crucial to the cultivation of innovative international talents. Taking the Calculus course as an example, this article first demonstrates the importance and connotation of ‘know thy enemy and know yourself’ in the construction of EMI courses. Then it elaborates on the construction methods and significance of the ‘Leaning Community’, ‘Teaching Community’, and ‘Teaching-Learning Community’ through studies of the relationship between ‘teaching’ and ‘learning’ form the student-centered aspect. Such research provides a useful reference for the teaching model reform, especially the effective construction of EMI courses in non-native English-speaking countries
SCONCE: A cosmic web finder for spherical and conic geometries
The latticework structure known as the cosmic web provides a valuable insight
into the assembly history of large-scale structures. Despite the variety of
methods to identify the cosmic web structures, they mostly rely on the
assumption that galaxies are embedded in a Euclidean geometric space. Here we
present a novel cosmic web identifier called SCONCE (Spherical and CONic Cosmic
wEb finder) that inherently considers the 2D (RA,DEC) spherical or the 3D
(RA,DEC,) conic geometry. The proposed algorithms in SCONCE generalize the
well-known subspace constrained mean shift (SCMS) method and primarily address
the predominant filament detection problem. They are intrinsic to the
spherical/conic geometry and invariant to data rotations. We further test the
efficacy of our method with an artificial cross-shaped filament example and
apply it to the SDSS galaxy catalogue, revealing that the 2D spherical version
of our algorithms is robust even in regions of high declination. Finally, using
N-body simulations from Illustris, we show that the 3D conic version of our
algorithms is more robust in detecting filaments than the standard SCMS method
under the redshift distortions caused by the peculiar velocities of halos. Our
cosmic web finder is packaged in python as SCONCE-SCMS and has been made
publicly available.Comment: 20 pages, 9 figures, 2 table
Preparation of Material for Adsorption Ag(I) in the Solution
The application of silver in electronics, jewelry, catalytic and other industries often produces a large amount of silver-containing wastewater, which causes serious impact to the surrounding environment and human health, while silver has a certain economic value attached to it. Therefore, how to effectively treat and recover Ag(?) from the silver-containing wastewater is a hot topic of concern at present. In order to seek an efficient and environmentally friendly adsorbent, this paper compared the adsorption efficiency of purified, thermally modified, acid modified and thermally-acid modified Bentonite on silver, selected an economical and reasonable purified clay as a carrier, and then completed the preparation of modified Bentonite as well as the optimization of conditions with sodium silicate as a surfactant and 3-mercaptopropyltrimethoxysilane as a modifier. The experiments showed that under the conditions of sodium silicate dosage of 15% of Bentonite, Bentonite and modifier dosage of 1:1, solution pH of 9, temperature of 45 °C and modification time of 5 h, the synthesized sulfhydryl modified Bentonite has good adsorption performance on Ag(?), and its adsorption capacity can reach 293.7 mg·g-1
Reinforcement Knowledge Graph Reasoning for Explainable Recommendation
Recent advances in personalized recommendation have sparked great interest in
the exploitation of rich structured information provided by knowledge graphs.
Unlike most existing approaches that only focus on leveraging knowledge graphs
for more accurate recommendation, we perform explicit reasoning with knowledge
for decision making so that the recommendations are generated and supported by
an interpretable causal inference procedure. To this end, we propose a method
called Policy-Guided Path Reasoning (PGPR), which couples recommendation and
interpretability by providing actual paths in a knowledge graph. Our
contributions include four aspects. We first highlight the significance of
incorporating knowledge graphs into recommendation to formally define and
interpret the reasoning process. Second, we propose a reinforcement learning
(RL) approach featuring an innovative soft reward strategy, user-conditional
action pruning and a multi-hop scoring function. Third, we design a
policy-guided graph search algorithm to efficiently and effectively sample
reasoning paths for recommendation. Finally, we extensively evaluate our method
on several large-scale real-world benchmark datasets, obtaining favorable
results compared with state-of-the-art methods.Comment: Accepted in SIGIR 201
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