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Enhancing stock index prediction: A hybrid LSTM-PSO model for improved forecasting accuracy.
PLoS One
January 2025
School of Economics and Trade, Guangzhou Xinhua University, Dongguan, China.
Stock price prediction is a challenging research domain. The long short-term memory neural network (LSTM) widely employed in stock price prediction due to its ability to address long-term dependence and transmission of historical time signals in time series data. However, manual tuning of LSTM parameters significantly impacts model performance.
View Article and Find Full Text PDFResearch on the ordering strategy problem in supply chain with profit allocation under two-level price-fluctuation sales.
PLoS One
January 2025
School of Business Management, Zhejiang Financial College, Hangzhou, Zhejiang, China.
This paper investigates optimal ordering strategies in supply chains under two-level price fluctuations and initial profit allocation. By utilizing Copula functions to model the complex relationship between fluctuating prices and uncertain demand, the study develops both continuous and discrete decision models for practical applications. A discrete algorithm is proposed to approximate the optimal solution, with its convergence rigorously proven.
View Article and Find Full Text PDFClassification and spatial characteristics of different development stages in China: Evidence from the contribution rate of production factors.
PLoS One
January 2025
Real Estate Research Center, Nanjing Agricultural University, Nanjing, China.
This paper aims to reveal the changing characteristics of the contribution rates of different production factors in China since the reform and opening up from two dimensions: stage and space. The study used national data from 1978 to 2021 and provincial data from 2000 to 2020, combined with methods such as C-D production function and spatial econometrics for analysis. Research has found that: (1) In terms of stage characteristics, during the structural adjustment stage (1978-1998), economic growth mainly relies on capital and labor input, and the contribution rate of land factors gradually decreases.
View Article and Find Full Text PDFDigital tools and technologies used in food fortification: A scoping review.
Ann N Y Acad Sci
January 2025
Global Alliance for Improved Nutrition, Geneva, Switzerland.
Food fortification (i.e., industrial fortification and biofortification) increases the micronutrient content of foods to improve population nutrition.
View Article and Find Full Text PDFAssessing the impacts of forest cover change on carbon stock and soil moisture dynamics using geospatial techniques: a case study of Nensebo forest, Southern Ethiopia.
Environ Monit Assess
January 2025
Department of Natural Resource Management, College of Agriculture and Veterinary Medicine, Jimma University, Jimma, Ethiopia.
Assessing the impacts of forest cover change on carbon stock and soil moisture dynamics is critical for understanding environmental degradation and guiding sustainable land management. This study evaluates the effects of forest cover change on carbon stock and soil moisture dynamics in Nensebo Forest from 1993 to 2023 using geospatial techniques. Landsat imagery including TM (1993), ETM + (2009), and OLI/TIRS (2023) were used.
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