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Strategies for improving crop comprehensive benefits via a decision-making system based on machine learning in the rice‒rape,rice‒wheat and rice‒garlic rotation systems in Southwest China
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作者 Xinrui Li Xiafei Li +9 位作者 Tao Liu Huilai Yin Hao Fu Yongheng Luo Yanfu Bai Hongkun Yang Zhiyuan Yang Yongjian Sun Jun Ma Zongkui Chen 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第9期2970-2988,共19页
Rice‒rape,rice‒wheat and rice‒garlic rotations are common cropping systems in Southwest China,and they have played a significant role in ensuring ecological and economic benefits(EB)and addressing the challenges of Ch... Rice‒rape,rice‒wheat and rice‒garlic rotations are common cropping systems in Southwest China,and they have played a significant role in ensuring ecological and economic benefits(EB)and addressing the challenges of China’s food security in the region.However,the crop yields in these rotation systems are 1.25‒14.73%lower in this region than the national averages.Intelligent decision-making with machine learning can analyze the key factors for obtaining better benefits,but it has rarely been used to enhance the probability of obtaining such benefits from rotations in Southwest China.Thus,we used a data-intensive approach to construct an intelligent decision‒making system with machine learning to provide strategies for improving the benefits of rice-rape,rice-wheat,and rice-garlic rotations in Southwest China.The results show that raising the yield and partial fertilizer productivity(PFP)by increasing seed input under high fertilizer application provided the optimal benefits with a 10%probability in the rice-garlic system.Obtaining high yields and greenhouse gas(GHG)emissions by increasing the N application and reducing the K application provided suboptimal benefits with an 8%probability in the rice-rape system.Reducing N and P to enhance PFP and yield provided optimal benefits with the lowest probability(8%)in the rice‒wheat system.Based on the predictive analysis of a random forest model,the optimal benefits were obtained with fertilization regimes by reducing N by 25%and increasing P and K by 8 and 74%,respectively,in the rice-garlic system,reducing N and K by 54 and by 36%,respectively,and increasing P by 38%in rice-rape system,and reducing N by 4%and increasing P and K by 65 and 23%in rice-wheat system.These strategies could be further optimized by 17‒34%for different benefits,and all of these measures can improve the effectiveness of the crop rotation systems to varying degrees.Overall,these findings provide insights into optimal agricultural inputs for higher benefits through an intelligent decision-making system with machine learning analysis in the rice-rape,rice‒wheat,and rice-garlic systems. 展开更多
关键词 rice rotation agricultural management greenhouse gas emissions comprehensive benefits fertilizer management
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Magnesium-based biomaterials for coordinated tissue repair:A comprehensive overview of design strategies,advantages,and challenges
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作者 Yuan Chen Siming Zhang +8 位作者 Jiaxiang Bai Yao Yang Yingjie Wang Yanling Zhou Wei Jiang Junjie Wang Junchen Zhu Chen Zhu Xianzuo Zhang 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2024年第8期3025-3061,共37页
Magnesium-based biomaterials(MBMs)are one of the most promising materials for tissue engineering due to their unique mechanical properties and excellent functional properties.This review describes the development,adva... Magnesium-based biomaterials(MBMs)are one of the most promising materials for tissue engineering due to their unique mechanical properties and excellent functional properties.This review describes the development,advantages,and challenges of MBMs for biomedical applications,especially for tissue repair and regeneration.The history of the use of MBMs from the beginning of the 20th century is traced,and the transformative advances in contemporary applications of MBMs in areas such as orthopedics and cardiovascular surgery are emphasized.The review also provides insight into the signaling pathways affected by MBMs,such as the PI3K/Akt and RANKL/RANK/OPG pathways,which are critical for osteogenesis and angiogenesis.The review advocates that future research should focus on optimizing alloy compositions,surface modification and exploring innovative technologies such as 3D printing to improve the efficacy of MBMs in complex tissue repair.The potential of MBMs to tissue engineering and regenerative medicine is significant,urging further exploration and interdisciplinary collaboration to maximize their therapeutic effects. 展开更多
关键词 Magnesium-based biomaterials Design strategies Functional properties Clinical applications CHALLENGES
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Evolution of United States Technology Alliance Strategy and Reshaping of International Strategic Landscape
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作者 Tang Xinhua 《Contemporary World》 2024年第4期20-24,共5页
Building a technology alliance is the main strategy for the United States to maintain its scientific and technological hegemony under its technopolitical strategic framework.After Joe Biden took office,the United Stat... Building a technology alliance is the main strategy for the United States to maintain its scientific and technological hegemony under its technopolitical strategic framework.After Joe Biden took office,the United States implemented“small yard with high fences”strategy for scientific and technological competition,as the first step toward building a technology alliance.The main goal is to restrict the flow of strategic emerging technologies and factors of innovation to rival countries. 展开更多
关键词 ALLIANCE MAINTAIN strategy
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Comprehensive Prevention and Control Strategies for Soil Continuous Cropping Obstacles of Facility Chili Pepper in Guangxi
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作者 Jie QIN Qihan LUO +1 位作者 Shuifang ZHU Dexian HUANG 《Meteorological and Environmental Research》 2024年第5期70-72,共3页
As a crucial economic crop in Guangxi region,chili pepper is facing increasingly severe challenges of continuous cropping obstacles.In this paper,the causes of continuous cropping obstacles in chili pepper soil are de... As a crucial economic crop in Guangxi region,chili pepper is facing increasingly severe challenges of continuous cropping obstacles.In this paper,the causes of continuous cropping obstacles in chili pepper soil are deeply analyzed,covering multiple dimensions such as the dynamic changes in soil physicochemical properties,the imbalance of soil microbial community structure,and the gradual accumulation of soil borne diseases and pests.Subsequently,a set of comprehensive prevention and control strategy is proposed:soil improvement through the application of organic fertilizers,biological fertilizers,and soil conditioners;implementing agricultural strategies of crop rotation and intercropping,flexibly adjusting planting density and methods,to optimize crop layout and improve planting management measures;actively introducing natural enemies for biological control,while promoting the use of biopesticides and microbial preparations for biological control.In response to the actual situation of continuous cropping obstacles in chili pepper soil of Guangxi,it is suggested that innovative soil improvement technologies,improved planting management measures,and promotion of biological control methods should also be considered. 展开更多
关键词 Facility agriculture Soil control comprehensive prevention and control Facility vegetables
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Zero-determinant strategies in iterated multi-strategy games
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作者 GUO Jinli 《纯粹数学与应用数学》 2024年第3期381-393,共13页
Self-serving,rational agents sometimes cooperate to their mutual benefit.The two-player iterated prisoner′s dilemma game is a model for including the emergence of cooperation.It is generally believed that there is no... Self-serving,rational agents sometimes cooperate to their mutual benefit.The two-player iterated prisoner′s dilemma game is a model for including the emergence of cooperation.It is generally believed that there is no simple ultimatum strategy which a player can control the return of the other participants.The zero-determinant strategy in the iterated prisoner′s dilemma dramatically expands our understanding of the classic game by uncovering strategies that provide a unilateral advantage to sentient players pitted against unwitting opponents.However,strategies in the prisoner′s dilemma game are only two strategies.Are there these results for general multi-strategy games?To address this question,the paper develops a theory for zero-determinant strategies for multi-strategy games,with any number of strategies.The analytical results exhibit a similar yet different scenario to the case of two-strategy games.The results are also applied to the Snowdrift game,the Hawk-Dove game and the Chicken game. 展开更多
关键词 prisoner′s dilemma zero-determinant strategy multi-strategy game symmetric game
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Optimization Analysis of Human Resource Management Strategies of Nantong University,a Local Comprehensive University in China
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作者 Fei Jin 《Proceedings of Business and Economic Studies》 2024年第2期1-7,共7页
This study analyzes the current situation and challenges of Nantong University amid the rapid development of higher education,addressing aspects such as faculty structure,administrative management efficiency,and promo... This study analyzes the current situation and challenges of Nantong University amid the rapid development of higher education,addressing aspects such as faculty structure,administrative management efficiency,and promotion mechanisms.Through questionnaire surveys and field research,coupled with SWOT analysis and various theoretical methods,a comprehensive analysis was conducted on Nantong University’s internal and external environment.The study proposes an improved comprehensive development strategy and implementation measures,which include updating management concepts,strengthening professional training,optimizing employment conditions,and improving salary systems.Ultimately,this study provides practical strategies for human resource management and the transformational development of Nantong University and other local comprehensive universities. 展开更多
关键词 Local comprehensive universities Transformation and development Human resource management SWOT
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Learning Strategies in Chinese EFL Learners' Reading Comprehension 被引量:1
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作者 汪建丽 《陕西师范大学学报(哲学社会科学版)》 CSSCI 北大核心 2002年第S1期356-358,共3页
According to schema theory resulting from the psycholinguistic model of reading,comprehending a text is an interactive process between the reader background knowledge and the text. This article first views the psychol... According to schema theory resulting from the psycholinguistic model of reading,comprehending a text is an interactive process between the reader background knowledge and the text. This article first views the psycholinguistic model of reading and research in learning strategies, then discusses the application of socioaffective,cognitive, metacognitive learning strategies in Chinese EFL learners’ reading comprehension. 展开更多
关键词 schema theory learning strategy socioaffective COGNITIVE metacognitive
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Barriers and strategies in listening comprehension
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作者 张帆 张金萍 李爱娜 《科技经济市场》 2006年第1期79-81,共3页
A variety of barriers to listening comprehension are illustrated in this paper. They are analyzed respectively and several effective strategies are also presented afterward. The barriers to listening are those of psyc... A variety of barriers to listening comprehension are illustrated in this paper. They are analyzed respectively and several effective strategies are also presented afterward. The barriers to listening are those of psychological quality, language knowledge, cultural background, Chinese interference and so on. The strategies should be as follows: training students' psychological quality,strengthening the teaching and learning of language knowledge,comparing cultural differences, using student-centered teaching method and combining intensive listening and extensive listening. 展开更多
关键词 LISTENING comprehension barriers strategies.
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On the Application of Cognitive Strategy in College English Listening Comprehension——With International Talents Training as the Goal
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作者 王晓静 马晓丽 《海外英语》 2017年第4期247-248,共2页
This paper, with the training of the international talents possessing remarkable English listening and speaking ability,mainly discusses the specific application of the cognitive strategy in different stages of colleg... This paper, with the training of the international talents possessing remarkable English listening and speaking ability,mainly discusses the specific application of the cognitive strategy in different stages of college English listening comprehension.It is expected that the paper can bring some useful enlightenments on the international talents training. 展开更多
关键词 college English listening comprehension cognitive strategy APPLICATION international talents training
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Second Language Lecture Comprehension: Student's Perception, Problems and Strategies
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作者 王熙 《海外英语》 2011年第2X期224-226,共3页
The ability to comprehend academic lecture is an important part of the necessary proficiency of tertiary level students for whom English is a second or foreign language. The purpose of this research is to investigate ... The ability to comprehend academic lecture is an important part of the necessary proficiency of tertiary level students for whom English is a second or foreign language. The purpose of this research is to investigate the lecture-perceived experience of one non-nativespeaking learner who attending her English medium lecture course in the first semester in New Zealand. It describes how the learner perceives the lecturing experience, the problems she encounters and the strategies she use to overcome these problems. 展开更多
关键词 LECTURE comprehensION PERCEPTION problem strategy
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Metacognitive Strategy Use in English Reading Comprehension
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作者 陈赏 《海外英语》 2015年第4期86-87,共2页
Metacogonitive strategies are in connection with the reading process. It is essential for language learners to master a series of metacogonitive strategies. Teachers should conduct metacognitive training among student... Metacogonitive strategies are in connection with the reading process. It is essential for language learners to master a series of metacogonitive strategies. Teachers should conduct metacognitive training among students. Thus, students are sure to improve their reading proficiency with some metacognitive knowledge during the reading process. 展开更多
关键词 metacognitive STRATEGIES READING comprehensION
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A Study on Metacognitive Strategies Used in Listening Comprehension and Reading Comprehension of College English
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作者 刘菁菲 《海外英语》 2013年第10X期124-125,共2页
This paper is a study of influence of metacognitive strategies on reading and listening through 196 non-English majors' metacognitive strategies used in CET-4. The major findings are that metacognitive strategies ... This paper is a study of influence of metacognitive strategies on reading and listening through 196 non-English majors' metacognitive strategies used in CET-4. The major findings are that metacognitive strategies have a great infulence on English reading and listening achievement and the effects of metacognitive strategies on English achievement are greater. In addition, each individual metacognitive strategy plays different roles in the process of reading and listening. 展开更多
关键词 metacognitive strategy LISTENING READING COLLEGE E
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Effective Use of 3S Strategies to Promote Reading Comprehension
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作者 王根莲 《中国校外教育》 2008年第8期80-81,共2页
This article intends to shed some light on effective use of three reading strategies: skimming,scanning and studying for non-English-speaking middle school students.The article also presents some advice for the teache... This article intends to shed some light on effective use of three reading strategies: skimming,scanning and studying for non-English-speaking middle school students.The article also presents some advice for the teacher's consideration when designing and preparing reading materials. 展开更多
关键词 skimming scanning studying reading comprehension
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Discourse Comprehension and Reading Strategies for Freshmen of Non-English Majors
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作者 杨荃 《科技信息》 2011年第28期9-9,共1页
This paper firstly discusses the nature of discourse comprehesion,and then analyzes the importance of reading strategy instructionon reading comprehension. Finally,it presents some useful approaches to help freshmen o... This paper firstly discusses the nature of discourse comprehesion,and then analyzes the importance of reading strategy instructionon reading comprehension. Finally,it presents some useful approaches to help freshmen of non-English majors read effectively. 展开更多
关键词 英语教学 教学方法 阅读教学 英语翻译
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The Use of Listening Comprehension Strategies by Non English Majors 被引量:1
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作者 Jiang Xunrong Zheng Min\ \ 《首都师范大学学报(社会科学版)》 2000年第S2期79-86,共8页
With the development of psycho-linguistics in the past twenty years or so, listening comprehension strategy has become an increasingly important aspect of research on Second Language Acquisition and Instruction. Altho... With the development of psycho-linguistics in the past twenty years or so, listening comprehension strategy has become an increasingly important aspect of research on Second Language Acquisition and Instruction. Although much has been done by researchers like O’Malley, Bacon, Richard, there is still some argument about what are listening comprehension strategies, how they can be classified, and what, as well as how they can be taught in class. This article is intended to contribute some ideas to these controversial fields of research on Listening Comprehension Strategy.\;For the theoretical aspect, the writers of this article venture a system of strategies, which is based on the well-established cognitive classification of learning strategies, and at the same time includes those strategies characteristic of listening comprehension.\;For the practical aspect, in order to find out on what strategies students need more training, a survey has been conducted on how students (first year and second year non-English majors) make use of listening comprehension strategies in the process of listening comprehension. By analyzing the students’ response to the survey, the writers of this article find that both first year and second year students are weak at using listening comprehension strategies. Of the 25 strategies, only 8 strategies are within the students’ command. This is explained as a result of lack of training in class. The writers appeal for more strategy-consciousness on the part of English teachers. The writers also find that the most serious problem in strategy using lies in discourse strategies, the difficulty of which often goes hand in hand with that in reading comprehension. And the training of discourse strategies is predicted by the writers of this article to be the most difficult part of listening class.\; 展开更多
关键词 LISTENING comprehensION LISTENING comprehensION strategy
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The Effect of Learning Strategies on Reading Comprehension 被引量:1
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作者 CAO Zhi-hong 《Sino-US English Teaching》 2007年第4期15-18,共4页
Learning strategies are usually regarded as one of the aspects of the cognitive psychology and reading is a cognitive process in which the reader engages in a conversation with the text or the author. Then is there an... Learning strategies are usually regarded as one of the aspects of the cognitive psychology and reading is a cognitive process in which the reader engages in a conversation with the text or the author. Then is there any relationship between learning strategies and reading comprehension? To explore this, an experimental study is conducted in this paper. The conclusion is thereafter reached that reading comprehension is closely related to and greatly affected by learning strategies, especially cognitive and metacognitive strategies. 展开更多
关键词 reading comprehension learning strategies cognitive strategies metacognitive strategies
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Listening Strategies in English Listening Comprehension of College Students 被引量:2
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作者 周红 《海外英语》 2018年第13期252-256,共5页
Listening is playing a fundamental role in foreign language learning.This thesis aims at finding the major problems con-fronting students in listening comprehension of non-English majors and the total usage of listeni... Listening is playing a fundamental role in foreign language learning.This thesis aims at finding the major problems con-fronting students in listening comprehension of non-English majors and the total usage of listening strategies,hoping to providesome useful suggestions for college English listening teaching and learning.The result shows that the biggest problem students con-fronted is vocabulary and the overall strategy use by students is at a medium frequency level.At last,specific suggestions are pro-vided for both students and English teachers based on the result of this research. 展开更多
关键词 LISTENING STRATEGIES LISTENING comprehensION NON-ENGLISH MAJOR
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Influence of social capital on the livelihood strategies of farmers under China's rural revitalization strategy in poor mountain areas: A case study of the Liangshan Yi autonomous prefecture 被引量:4
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作者 HE Ren-wei GUO Shi-li +1 位作者 DENG Xian ZHOU Kui 《Journal of Mountain Science》 SCIE CSCD 2022年第4期958-973,共16页
Social capital in the form of social resources or social networks is one of the most important livelihood capital of farmers, which can increase the labor productivity of poor households and increase income. It is imp... Social capital in the form of social resources or social networks is one of the most important livelihood capital of farmers, which can increase the labor productivity of poor households and increase income. It is important to explore the reasons underlying the livelihood strategy choices of farmers from the perspective of social capital under China’s rural revitalization strategy. In this study, the Liangshan Yi Autonomous Prefecture, a povertystricken mountainous area in southwestern China, was selected as the case study area, and multivariable linear regression models were constructed to analyze the influence of social capital on livelihood strategies.The results are as follows:(1) Individual social capital had a positive effect on non-agricultural livelihood strategies. On average, with a one-unit increase in individual social capital, the ratio of farmers’ nonagricultural income to total productive income(Income_Rto) increased by 0.002% and 0.062%,respectively. Collective social capital, with the Peasant Economic Cooperation Organization(PECO) as the carrier, had a negative effect on the non-agricultural livelihood strategies of farmers;on average, with a oneunit increase in PECO, Income_Rto decreased by approximately 0.053%. However, this effect was only significant in the river valley area.(2) The income differences among the different livelihood strategy types were explained by the livelihood strategy choices of farmers. As non-agricultural work can bring more benefits, the labor force exhibited one-way migration from villages to cities, resulting in a lack of the subject of rural revitalization. It is necessary to implement effective measures to highlight the role of PECO in increasing agricultural income for farmers. Finally,based on the above conclusions,policy recommendations with respect to livelihood transformation of farmers and rural sustainable development are discussed. 展开更多
关键词 Social capital Livelihood strategies Village types Rural revitalization Poor mountain areas Liangshan Yi Autonomous Prefecture
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Metacognitive Strategy Training in Reading Comprehension
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作者 段海萍 《海外英语》 2016年第13期14-15,共2页
Despite that language learning strategy(LLS) has been heatedly discussed since its emergence in 1975, its conceptualization, categorization and strategy training models are still in dispute. However, what commonly rev... Despite that language learning strategy(LLS) has been heatedly discussed since its emergence in 1975, its conceptualization, categorization and strategy training models are still in dispute. However, what commonly revealed by most studies is that there is a positive correlation between the use of language learning strategy and language learners' performance. This paper applies Dornyei's classification, known as cognitive strategies, metacognitive strategies, social strategies and affective strategies. By reviewing previous studies on the application of metacognitive strategy in English as a second language(ESL) reading comprehension, plenty of useful implications for reading pedagogy are suggested. It further explains how certain important metacognitive strategies, namely Semantic Mapping(SM) and Experience-Text-Relationship(ETR), can be implemented in second language reading comprehension, aiming to encourage language learners to be aware of learning strategies,"learn how to learn"(Cohen, 1988, p66)! 展开更多
关键词 Reading comprehensION AFFECTIVE AWARENESS plenty CATEGORIZATION Training vocabulary INSTRUCTION enco
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Can Listening Comprehension Strategies Assist ESL/EFL Learners? 被引量:1
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作者 张秋颖 《海外英语》 2011年第8X期46-48,共3页
Listening strategies are important in English learning and teaching. They are highly effective in developing learners' listening comprehension ability. This paper firstly examines the theories of learning strategi... Listening strategies are important in English learning and teaching. They are highly effective in developing learners' listening comprehension ability. This paper firstly examines the theories of learning strategies and the uses of them in second language acquisition (SLA) and then reviews various research findings on strategy usage, such as the types of learning strategies used by good listeners, effective strategy training, and the teaching of strategies explicitly. The paper goes on to illustrate listening comprehension strategies involving top-down and bottom-up processes and provide with research evidence showing that using listening strategies can improve listening comprehension. Finally, the paper offers suggestions and principles for language teachers about how to teach listening strategies in second language classrooms. 展开更多
关键词 JUNIOR high SCHOOL English teaching LISTENING LISTENING STRATEGIES
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