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The Impact and Response of Automatic Driving Technology Standards on the Determination of Criminal Responsibility for Traffic Accidents in China
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作者 Sun Jianfeng 《科技与法律(中英文)》 2026年第1期134-148,共15页
With the continuous progress of automatic driving technology,automatic driving technology standards are gradually affecting the determination of criminal responsibility for traffic accidents in China.At present,the ch... With the continuous progress of automatic driving technology,automatic driving technology standards are gradually affecting the determination of criminal responsibility for traffic accidents in China.At present,the characteristics and tendency of China's automatic driving technology standards present the situation of high policy relevance coexisting with low normative binding,professionalism coexist with barriers,forefront coexist with ambiguity.Therefore,challenges are presented both theoretically and practically on the determination of criminal responsibility based on automatic driving technology standard..In this regard,the misunderstanding should be clarified in theory:The legal order under the automatic driving technology standard has constitutionality and systematic,and there is a balance between the frontier of automatic driving technology development and the lagging of criminal law.The automatic driving technology risk level system should be built to clarify the boundary of the effectiveness of criminal law norms,seeking fora breakthrough in the application of the establishment of a comprehensive judgment system of the risks and accidents and the system of evidence to prove the system,which clarifies the determination of criminal responsibility under the automatic driving technology standard.This essay hopes to pursue breakthroughs in the application-to establish a comprehensive judgment system of risks and accidents as well as an evidence proof system,so as to clarify the determination of criminal responsibility under automatic driving technology standards. 展开更多
关键词 automatic driving traffic accidents criminal responsibility legal order
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The 2025 version of CSC9000T has been released,using the power of responsibility to chart a new blueprint for high-quality industrial development
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作者 Qiu Shuchen 《China Textile》 2025年第6期19-20,共2页
On November 28th,the launch conference and industry exchange seminar on the"CSC9000T Social Responsibility Management System for Textile and Apparel Enterprises(2025 Edition)"was grandly held in Beijing.Du Y... On November 28th,the launch conference and industry exchange seminar on the"CSC9000T Social Responsibility Management System for Textile and Apparel Enterprises(2025 Edition)"was grandly held in Beijing.Du Yuzhou,former President of the China National Textile and Apparel Council,and Chen Shujin,former Vice President,as well as Sun Ruizhe,Secretary of the Party Committee and President of the China National Textile and Apparel Council,and Vice President Yan Yan,witnessed the release of"CSC900OT 2025". 展开更多
关键词 industry exchange seminar high quality industrial development social responsibility launch conference social responsibility management system textile apparel enterprises CSC T
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Corporate Social Responsibility
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《China Oil & Gas》 2025年第6期46-53,共8页
CNPC Abu Dhabi actively fulfills its overseas social responsibilities,continuously deepens local integration and cultural exchanges,and promotes people-to-people ties between China and foreign countries.It continuousl... CNPC Abu Dhabi actively fulfills its overseas social responsibilities,continuously deepens local integration and cultural exchanges,and promotes people-to-people ties between China and foreign countries.It continuously explores and practices educational cooperation,cultural dissemination,and international exchanges and is committed to building diverse interactive platforms that promote cross-cultural understanding and friendly cooperation.Through long-term commitment to public welfare and active participation in local community development,the company has effectively enhanced its international image and influence,demonstrating CNPC’s character as a central state-owned enterprise that embraces openness,inclusiveness,and win-win cooperation. 展开更多
关键词 overseas social responsibilities cultural exchanges building diverse interactive platforms corporate social responsibility CNPC Abu Dhabi people people ties educational cooperation
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A pathway to local legitimacy:the impact of corporate governance on corporate social responsibility in chaebol‑affiliated firms
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作者 Chune Young Chung Hoje Jo Junyoup Lee 《Financial Innovation》 2025年第1期3286-3323,共38页
Drawing on local legitimacy theory,which posits that firms seek acceptance and approval from their local community and stakeholders,we examine the effect of corporate governance(CG)quality on corporate social responsi... Drawing on local legitimacy theory,which posits that firms seek acceptance and approval from their local community and stakeholders,we examine the effect of corporate governance(CG)quality on corporate social responsibility(CSR)activities in Korea.Enhancing CG quality and engaging in CSR activities are increasingly important for firms’long-term sustainability.Using the KEJI-CSR index and the KCGS CG score,we find that CG quality positively influences CSR activities.Specifically,if the CG quality score increases by one standard deviation,CSR improves by approximately 1.6–2.3%of the mean CSR score.Furthermore,the relationship between CG and CSR is stronger for business conglomerates(chaebol-affiliated firms),suggesting that sound CG practices can promote CSR activities more effectively when the interests of management and stakeholders are better aligned.This finding supports local legitimacy theory.Our findings are robust under various tests,including difference-in-differences analysis and propensity score matching.An interesting policy implication is that multinational enterprises or foreign investors should prioritize the CG quality of their local subsidiaries or investee firms.Better CG practices can enhance CSR activities,which are essential for long-term survival in local markets.This study,however,is limited to Korea and may not be generalizable to other emerging markets with different governance structures. 展开更多
关键词 Corporate social responsibility Corporate governance Local legitimacy theory CHAEBOL Electronic voting system DIFFERENCE-IN-DIFFERENCES
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Environmental Awareness,Satisfaction,and Protection Intentions in Vietnam:The Role of Social Responsibility
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作者 Le Thi Cam Tu Le Thi Gai +2 位作者 Dinh Ngoc Truong Nguyen Thi Hien Nguyen Van Toan 《Journal of Environmental & Earth Sciences》 2025年第8期349-362,共14页
This study examines the relationship between ecological awareness,satisfaction,and the intention to participate in environmental protection in Vietnam,focusing on the mediating role of satisfaction and the moderating ... This study examines the relationship between ecological awareness,satisfaction,and the intention to participate in environmental protection in Vietnam,focusing on the mediating role of satisfaction and the moderating effects of social responsibility and ecological knowledge.While ecological awareness is a key driver of pro-environmental behavior,prior research shows that awareness alone does not always translate into concrete actions.To address this issue,we explore how satisfaction with environmental conditions strengthens the awareness-intention link and how personal responsibility and knowledge further enhance this process.Survey data were collected from 4,615 participants across six provinces,representing diverse ecological and socio-economic contexts.Structural equation modeling(SEM)results indicate that ecological awareness positively influences pro-environmental intention,but this effect is significantly stronger when individuals report higher levels of satisfaction.Satisfaction serves as a central mediator,showing that awareness must be complemented by confidence and trust in environmental outcomes to stimulate behavioral commitment.In addition,social responsibility and ecological knowledge moderate these relationships:individuals with greater responsibility and knowledge demonstrate stronger connections between awareness,satisfaction,and intention.The findings contribute to environmental psychology by emphasizing the interaction of cognitive,affective,and normative factors in shaping ecological behavior.For policymakers,the results highlight the need to design interventions that go beyond awareness-raising.Building satisfaction with environmental policies,fostering a sense of responsibility,and strengthening ecological knowledge are crucial for promoting sustainable behaviors and encouraging active citizen participation in environmental protection in Vietnam. 展开更多
关键词 VIETNAM Ecological Environment Ecological Environmental Protection SATISFACTION Social responsibility
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WHEN HISTORY HERALDS PEACE The victory over fascism stands as both a triumph of justice and a lasting reminder of the responsibility to safeguard peace
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作者 Yan Wei 《China Report ASEAN》 2025年第10期48-49,共2页
In a recent interview with Beijing Review,Wang Chaoguang,former director of the Institute of World History,Chinese Academy of Social Sciences,explained why victory over fascism should be commemorated eight!decades on.... In a recent interview with Beijing Review,Wang Chaoguang,former director of the Institute of World History,Chinese Academy of Social Sciences,explained why victory over fascism should be commemorated eight!decades on.Edited excerpts from the interview follow:Why do Chinese sources often refer to World War II(WWII)as the World Anti-Fascist War?How are they di!erent and what is the relationship between the two? 展开更多
关键词 World History COMMEMORATION victory fascism Anti Fascist War Chinese Sources responsibility Peace World War II
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Making money move: an analysis of corporate social responsibility activities in money transfer firms
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作者 Ọláyẹmí M.Ọlábìyí Jasmine Alam 《Financial Innovation》 2025年第1期3163-3180,共18页
Although research has examined the financial sector’s response to COVID-19,the role of the cross-border money transfer industry remains unclear.This study investigates the corporate social responsibility(CSR)actions ... Although research has examined the financial sector’s response to COVID-19,the role of the cross-border money transfer industry remains unclear.This study investigates the corporate social responsibility(CSR)actions of 22 cross-border money transfer firms headquartered in Canada,the US,and the UK to determine how they supported stakeholders during the pandemic.Using qualitative data analysis software,we analyze textual data from company websites,press releases,and blogs to assess CSR activities.Our findings show that nine of the 22 cross-border money transfer firms engaged in COVID-related CSR efforts and communicated these actions through their controlled channels.Two out of every three firms that publicized their CSR initiatives during the pandemic were not traded in any stock exchange market.This research has two key implications.First,disclosing CSR initiatives through controlled or uncontrolled channels increases the likelihood of attracting socially conscious customers and investors,which could ultimately lead to higher economic profits.Second,economic profit can create a bandwagon effect,encouraging other money transfer firms to integrate CSR activities into their business models,which may enhance the well-being of the communities they serve and rely upon. 展开更多
关键词 Corporate social responsibility COVID-19 Remittances MAXQDA
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From“Cost Sharing”to“Responsibility Sharing”:Uncertain Prospect of US-Europe Relations
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作者 Song Fang 《Contemporary International Relations》 2025年第2期37-59,共23页
Burden sharing has been a perennial issue in the transatlantic alliance,primarily entailing cost sharing and responsibility sharing.During the first Trump administration,the dispute over cost sharing had been prominen... Burden sharing has been a perennial issue in the transatlantic alliance,primarily entailing cost sharing and responsibility sharing.During the first Trump administration,the dispute over cost sharing had been prominent,while the Biden administration placed more emphasis on responsibility sharing to facilitate its strategic goal of“outcompeting”China.The Ukraine crisis had prompted a US-Europe consensus on cost sharing,but the urgency of responsibility sharing subsequently increased.The shift from jointly providing the economic resources to extensively sharing the security responsibilities ref lects the recalibration of the US strategic focus and its higher expectations for the role of European allies.Nevertheless,Europe's response to the US call for responsibility sharing has been relatively limited.The responsibility sharing within the US-Europe alliance and their future relationship will be subject to the strategic coordination between the two sides and multiple complex factors. 展开更多
关键词 China-US competition cost sharing responsibility sharing US-Europe alliance
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VAT Neutrality and Corporate Social Responsibility:Evidence from China’s 2018 VAT Credit Refund Reform
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作者 Ningning Zhang Xiaoyan Guan 《Proceedings of Business and Economic Studies》 2025年第6期127-134,共8页
Taking China’s 2018 value-added tax(VAT)credit refund reform as an exogenous shock to improve VAT neutrality,we use a difference-in-differences approach to explore how the reform affected corporate social responsibil... Taking China’s 2018 value-added tax(VAT)credit refund reform as an exogenous shock to improve VAT neutrality,we use a difference-in-differences approach to explore how the reform affected corporate social responsibility(CSR).We find that the reform motivated firms to improve CSR performance.The reform has a“resource”effect,increasing internal funds and reducing financing costs,thereby enhancing firms’ability to undertake CSR.The reform also has a“reputation”effect,stimulating firms’willingness to engage in CSR to improve their reputations.CSR following the reform increases firm values and reduces bankruptcy risk.Our study provides fresh insights into VAT neutrality theory and is a reference for tax reform in emerging economies. 展开更多
关键词 Corporate social responsibility Reputation effect Resource effect VAT credit refund reform VAT neutrality
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Environmental Target Responsibility System,Governance,and Economic Growth
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作者 Yan Chengliang Zhao Fuyang Niu Huan 《中国经济学人(中英文)》 2025年第2期2-27,共26页
This paper develops an economic growth model incorporating China’s Environmental Target Responsibility System(ETRS)to analyze its impact on both economic growth and social welfare.We find that the ETRS’s effect on e... This paper develops an economic growth model incorporating China’s Environmental Target Responsibility System(ETRS)to analyze its impact on both economic growth and social welfare.We find that the ETRS’s effect on economic growth is complex,resulting from the interplay of three key factors:its potential to improve environmental quality,its potential dampening effect on total factor productivity(TFP),and its influence on local government spending on environmental governance.A balanced ETRS can improve environmental quality,promote technological innovation,and enhance social welfare.However,excessively stringent targets and overly emphasized responsibility may lead to declines in both economic growth and social welfare.From the perspective of balancing economic growth and social welfare,we find that the ETRS that maximizes economic growth is less stringent than the ETRS that maximizes social welfare.Crucially,the economic growth cost of shifting from a growth-maximizing to a welfare-maximizing ETRS is minimal.In other words,significant improvements in environmental quality and public well-being can be achieved without substantially sacrificing economic dynamism.This paper attempts to model China’s unique environmental target assessment system within the framework of endogenous growth theory,offering a new perspective for understanding the dynamic relationship between economic growth and environmental quality in China. 展开更多
关键词 Environmental target responsibility system(ETRS) environmental governance economic growth social welfare local government
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Summary of Responsibility-based Teaching in Food Toxicology
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作者 Lili JI Jie CHENG +2 位作者 Zhoulin WU Ting BAI Jiamin ZHANG 《Agricultural Biotechnology》 2025年第5期47-49,52,共4页
Food Toxicology is a core course for the major of food quality and safety.The teaching objective is to enable students to acquire the basic theoretical concepts of food toxicology,understand the toxicity and poisoning... Food Toxicology is a core course for the major of food quality and safety.The teaching objective is to enable students to acquire the basic theoretical concepts of food toxicology,understand the toxicity and poisoning mechanisms of exogenous chemicals in food,and thereby achieve the goal of ensuring food safety.This article summarized the teaching process of the course,aiming to enhance students awareness of food safety.Through the course teaching process,in-class experiments,and small topic presentation sessions,it establishes students sense of responsibility from input to output in an all-round manner,in order to provide an objective basis for improving the teaching of this course. 展开更多
关键词 Food Toxicology TEACHING responsibility
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Research on the Evaluation Index System of Social Responsibility of Small and Medium-Sized Enterprises
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作者 Yang Yang Ali Khatibi Jacquline Tham 《Proceedings of Business and Economic Studies》 2025年第3期1-9,共9页
The social responsibility of small and medium-sized enterprises(SMEs)is very important for themselves and the whole society.The concept and connotation of social responsibility of SMEs have been defined and explained.... The social responsibility of small and medium-sized enterprises(SMEs)is very important for themselves and the whole society.The concept and connotation of social responsibility of SMEs have been defined and explained.The research dimensions of previous scholars on corporate social responsibility(CSR)have been reviewed,and an evaluation index system for social responsibility of SMEs has been constructed based on their characteristics,including four key indicators:community,customers,employees,and environment. 展开更多
关键词 Corporate social responsibility SMES EVALUATION
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Examining the Relationship Between Corporate Social Responsibility Performance and Stock Price Crash Risk
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作者 Dan Zhang Xinran Zeng 《Proceedings of Business and Economic Studies》 2025年第1期44-49,共6页
This paper selects the Corporate Social Responsibility(CSR)index from Hexun.com(2010–2020)and the stock price crash index of China’s Shanghai and Shenzhen A-share listed companies from the China Stock Market&Acc... This paper selects the Corporate Social Responsibility(CSR)index from Hexun.com(2010–2020)and the stock price crash index of China’s Shanghai and Shenzhen A-share listed companies from the China Stock Market&Accounting Research Database(CSMAR)for empirical analysis.By examining the impact of CSR performance on stock price crash risk,this study identifies key relationships and further investigates the moderating role of media promotion and communication as an intermediary to explore the transmission mechanisms and influence between the two.The empirical results indicate that CSR performance is significantly negatively correlated with stock price crash risk,suggesting that strong CSR performance can effectively reduce the likelihood of a stock price crash.Furthermore,additional analysis reveals that media plays a moderating role in the relationship between CSR performance and stock price crash risk.This study aims to contribute to the understanding of the formation mechanisms and analytical paradigms of factors influencing stock price crash risk while providing theoretical support and reference value for risk prevention strategies. 展开更多
关键词 Social responsibility information disclosure Stock price crash risk Information effect
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Research on Optimization of Audit Risk Relationship Model Based on Responsibility Subject
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作者 WANG Shufeng LI Xianglin 《Journal of Modern Accounting and Auditing》 2025年第4期281-286,共6页
Based on the objective reality that audit risk responsibility has mainly been attributed to certified public accountants in the past,and audit standards have not specifically divided the entities responsible for audit... Based on the objective reality that audit risk responsibility has mainly been attributed to certified public accountants in the past,and audit standards have not specifically divided the entities responsible for audit risk responsibility,combined with the understanding of the types of audit risk elements related to audit standards,the differences in the understanding of audit risk and its relationship model application caused by the different audit cultures in China and the West have led to a bias of Chinese certified public accountants to bear inspection risks,which affects their professional enthusiasm and continues to cause accounting firms to be lazy in audit quality management.Based on this,literature research,case analysis,and logical deduction methods were used to redefine the concept of audit risk from the perspective of risk responsibility subjects.The traditional audit risk elements and their relationship models were briefly introduced,and the identification of audit risk elements and optimization of audit risk relationship models were systematically demonstrated. 展开更多
关键词 responsible party audit risk relationship model contract risk report risk
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Institutional Construction of Directors’Climate Legal Responsibility Under the“Dual Carbon”Goals:From the Perspective of Climate Risks
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作者 Wei Qingpo 《Contemporary Social Sciences》 2025年第3期114-135,共22页
Enterprises are the primary entities responsible for the multi-governance of climate risks.Nevertheless,the obligations and duty performance systems for directors,as outlined in the new Company Law of the People’s Re... Enterprises are the primary entities responsible for the multi-governance of climate risks.Nevertheless,the obligations and duty performance systems for directors,as outlined in the new Company Law of the People’s Republic of China(the new Company Law),fall short of adequately addressing the internal demands necessary for effectively managing climate risks.Therefore,it is essential to enhance these systems by incorporating specific duties for directors related to climate issues.The accountability of directors for a company’s liability regarding damages caused by climate change is rooted in the evolving purpose of China’s Company Law,the directors’duty of diligence,and the practical demand for emission reduction.Pursuant to the directors’duties set forth by the Company Law,directors’climate responsibilities mainly include two aspects:diligence and loyalty.Diligence primarily involves the total or partial failure to consider and manage foreseeable significant climate risks.Loyalty pertains to the intentional neglect of significant climate-related risks or to decision-making that does not align with the principle of maximizing the company’s interests.To enforce directors’climate responsibilities,it is necessary to introduce provisions within the Company Law that address directors’duties to control climate risks and establish appropriate compensatory measures.Furthermore,developing evidence standards for directors’liability and overcoming the limitations associated with the objects of directors’fiduciary duties is crucial.In light of the“dual carbon”goals and the foreseeability of significant financial risks posed by climate change,directors are obliged to integrate climate change considerations into corporate strategy,supervision,and disclosure,thereby contributing to the restructure of the regulatory framework governing directors’responsibilities towards green and low-carbon transformation. 展开更多
关键词 “dual carbon ”directors’climate responsibilities duty of diligence duty of loyalty climate change
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恩诺沙星药浴后黑棘鲷幼鱼体内药物累积-消除规律及肝脏解毒响应
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作者 张林宝 刘倩 +5 位作者 王旭峰 王学锋 孙伟 张喆 田斐 陈海刚 《南方水产科学》 北大核心 2026年第2期165-173,共9页
为阐明恩诺沙星药浴对黑棘鲷(Acanthopagrus schlegelii)幼鱼的潜在残留风险与生理影响,本研究采用5和10mg·L-1恩诺沙星对幼鱼进行24 h药浴,并测定净化7 d内肝脏、鳃和肌肉中的药物残留与肝脏生化指标。结果显示,恩诺沙星在幼鱼体... 为阐明恩诺沙星药浴对黑棘鲷(Acanthopagrus schlegelii)幼鱼的潜在残留风险与生理影响,本研究采用5和10mg·L-1恩诺沙星对幼鱼进行24 h药浴,并测定净化7 d内肝脏、鳃和肌肉中的药物残留与肝脏生化指标。结果显示,恩诺沙星在幼鱼体内呈器官特异性累积,肝脏是主要富集器官,其残留量、药时曲线下面积(AUC_(0-t))和平均滞留时间(MRT)均最高;肌肉中恩诺沙星消除半衰期明显长于肝脏和鳃,提示肌肉可能是药物残留的重点监控组织。恩诺沙星药浴干扰了幼鱼肝脏解毒代谢系统,表现为细胞色素P450(CYP450)含量显著降低,谷胱甘肽S-转移酶(GST)活性被诱导;同时导致肝脏抗氧化防御系统失衡;超氧化物歧化酶(SOD)活性被持续抑制,过氧化氢酶(CAT)活性及丙二醛(MDA)含量显著升高。综合生物标志物响应指数(IBRv2)分析显示恩诺沙星毒性具有明显的剂量依赖性,且在净化7 d后仍表现出较高的综合毒性负荷。虽然幼鱼各组织中恩诺沙星残留可在48~72 h内降至最大残留限量(MRL,100μg·kg^(-1))以下,但肝脏的解毒代谢紊乱和氧化损伤可持续7 d以上。研究表明,恩诺沙星药浴后黑棘鲷幼鱼体内药物残留与清除具有组织特异性,且肝脏生理功能的恢复明显滞后于药物残留的消除。 展开更多
关键词 黑棘鲷 恩诺沙星 代谢动力学 肝脏响应 综合生物标志物
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茵陈蒿汤对胆汁淤积性肝损伤的干预作用及调控机制 被引量:1
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作者 王琳琳 朱正望 +4 位作者 赵静涵 马瑞雪 王兵 朱平生 苗明三 《中国实验方剂学杂志》 北大核心 2026年第1期71-80,共10页
胆汁淤积性肝损伤是指由各种原因导致的胆汁生成、分泌和排泄障碍诱发胆汁淤积,进而引起肝脏损伤、代谢失调和功能紊乱的肝胆系统疾病,可进一步发展为肝纤维化、肝硬化、肝衰竭甚至导致死亡。目前临床治疗的首选药物为熊去氧胆酸,但存... 胆汁淤积性肝损伤是指由各种原因导致的胆汁生成、分泌和排泄障碍诱发胆汁淤积,进而引起肝脏损伤、代谢失调和功能紊乱的肝胆系统疾病,可进一步发展为肝纤维化、肝硬化、肝衰竭甚至导致死亡。目前临床治疗的首选药物为熊去氧胆酸,但存在不良反应和部分患者不耐受的现实问题。茵陈蒿汤是中医治疗黄疸阳黄证的代表方剂,具有“清热利湿退黄”等功效,在长期临床应用中表现出了良好的疗效,且现代药理学研究发现该方具有抗炎、抗氧化、调节胆汁酸平衡、抑制肝细胞凋亡等保肝作用。对近年茵陈蒿汤治疗胆汁淤积性肝损伤的相关临床及动物实验研究进行整理归纳后发现,茵陈蒿汤可通过调节胆汁酸代谢与排泄、减轻炎症反应、抑制氧化应激、缓解内质网应激(ERS)、抑制肝细胞凋亡、保护肠道黏膜屏障等作用机制干预胆汁淤积性肝损伤的疾病进程。通过对目前研究证实的茵陈蒿汤调控胆汁淤积性肝损伤相关分子机制进行系统阐述,以期为茵陈蒿汤的临床应用和深入研究提供参考。 展开更多
关键词 茵陈蒿汤 胆汁淤积 胆汁酸代谢与排泄 炎症反应 细胞凋亡
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中国农村家庭发展韧性:逻辑建构、测度评价与动态演进 被引量:1
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作者 温涛 刘正桃 《吉林大学社会科学学报》 北大核心 2026年第1期138-154,269,共18页
农村家庭发展韧性作为家庭抵御风险冲击、维持一定福利水平的能力,对农民农村共同富裕的实现具有重要的现实意义。文章基于CFPS 2012—2022年数据,综合运用熵值法、广义线性模型、自然间断点分级法、核密度估计、Dagum基尼系数测算与分... 农村家庭发展韧性作为家庭抵御风险冲击、维持一定福利水平的能力,对农民农村共同富裕的实现具有重要的现实意义。文章基于CFPS 2012—2022年数据,综合运用熵值法、广义线性模型、自然间断点分级法、核密度估计、Dagum基尼系数测算与分解等方法测度并分析中国农村家庭发展韧性水平。研究结果表明:1)总体上,风险冲击力在下降,风险应对能力均在增强,但是区域之间存在明显差异。2)风险冲击力越强,吸收力、适应力和转型力越弱,则家庭发展韧性越低。3)绝对收入标准下的家庭发展韧性水平呈现出逐年上升的趋势,而相对收入标准下的家庭发展韧性水平不断下降。4)家庭发展韧性分布由中等以上为主变成高低两极占比稍高、中间等级占比稍低的“哑铃型”,低等级陷阱与高等级均衡并存,同时呈现出“西低东高”的分布,且资本禀赋低的群体和务农主导型、补贴依赖型家庭的韧性水平更低、下降速度更快。5)全国以及各地区的韧性分布均愈发分散,韧性的绝对差距扩大,且韧性水平均有不同程度的下降,部分地区存在轻微极化现象。此外,区域相对总体差异在扩大,超变密度和地区内差异是总体差异的主要来源,同时,西部内部差异以及与其他地区之间的差异最大。 展开更多
关键词 发展韧性 风险冲击 风险应对 共同富裕
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基于响应面法的Ti-Nb合金工艺参数优化 被引量:1
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作者 王俊 王克鲁 +3 位作者 鲁世强 李鑫 欧阳德来 邱仟 《稀有金属》 北大核心 2026年第1期143-149,共7页
本文在变形温度为820~940℃,应变速率为0.001~10 s^(-1)和最大高度下压量为70%的条件下,采用Gleeble-3500热模拟试验机对Ti-Nb合金进行等温恒应变速率压缩实验.基于实验数据,分析Ti-Nb合金的流变应力曲线,计算出不同工艺参数下的材料参... 本文在变形温度为820~940℃,应变速率为0.001~10 s^(-1)和最大高度下压量为70%的条件下,采用Gleeble-3500热模拟试验机对Ti-Nb合金进行等温恒应变速率压缩实验.基于实验数据,分析Ti-Nb合金的流变应力曲线,计算出不同工艺参数下的材料参数(Z参数、功率耗散系数),建立了基于响应面法(RSM)的工艺参数和材料参数的预测模型,最后对响应面模型进行多目标可视化优化,得到优化后的工艺参数.结果表明:Ti-Nb合金的流变应力曲线大多呈动态回复特征,且在变形后期曲线出现上翘现象.基于响应面法所建立的预测模型具有较高精度,且优化后的加工参数范围为(890~940℃/0.001~0.125s^(-1)).经组织验证,该区域主要的变形机制为动态再结晶和动态回复. 展开更多
关键词 Ti-Nb合金 流变应力曲线 响应面法(RSM) 工艺参数优化
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压电层合壳体等几何建模及分析
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作者 刘涛 许文祥 +2 位作者 蒋雅芬 胡晓磊 张顺琦 《机械强度》 北大核心 2026年第4期122-133,共12页
【目的】传统有限元法在建模过程中存在几何不精确性和单元阶次较低的问题,在处理含有曲线或曲面的复杂几何模型时,会引入逼近误差。相较而言,等几何分析方法将非均匀有理B样条(Non-Uniform Rational B-Splines,NURBS)基函数作为形函数... 【目的】传统有限元法在建模过程中存在几何不精确性和单元阶次较低的问题,在处理含有曲线或曲面的复杂几何模型时,会引入逼近误差。相较而言,等几何分析方法将非均匀有理B样条(Non-Uniform Rational B-Splines,NURBS)基函数作为形函数,具备几何精确、高阶连续、高精度和无需传统网格划分过程等优势。因此,基于等几何分析方法和一阶剪切变形理论建立了一种能够精确预测压电层合壳体结构力-电行为的等几何分析模型,并进行相应分析。【方法】首先,利用NURBS基函数推导了Reissner-Mindlin壳单元的位移离散方程;其次,考虑材料的纤维角度,建立了从局部坐标系到全局坐标系的压电本构方程的转换关系,并采用Hamilton变分原理构建了压电层合壳体的等几何分析模型;然后,利用构建的等几何分析模型对经典壳体问题进行了分析,并将等几何分析模型的结果与已有文献和有限元软件仿真的结果进行了对比,验证了模型的精确性和高效性;最后,对机-电载荷作用下压电层合壳体的静力学和动力学响应进行了分析。【结果】数值结果表明,所建立的压电层合壳体的等几何分析模型具有较高的计算精度,并且同时适用于普通单层壳体、层合壳体及压电层合壳体等结构的分析。 展开更多
关键词 等几何分析 一阶剪切变形理论 压电层合壳体 静力学响应 动力学响应
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