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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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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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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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Environmental Target Responsibility System,Governance,and Economic Growth
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作者 Yan Chengliang Zhao Fuyang Niu Huan 《China Economist》 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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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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Not in Control,but Liable?Attributing Human Responsibility for Fully Automated Vehicle Accidents
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作者 Siming Zhai Lin Wang Peng Liu 《Engineering》 SCIE EI CAS CSCD 2024年第2期121-132,共12页
Human agency has become increasingly limited in complex systems with increasingly automated decision-making capabilities.For instance,human occupants are passengers and do not have direct vehicle control in fully auto... Human agency has become increasingly limited in complex systems with increasingly automated decision-making capabilities.For instance,human occupants are passengers and do not have direct vehicle control in fully automated cars(i.e.,driverless cars).An interesting question is whether users are responsible for the accidents of these cars.Normative ethical and legal analyses frequently argue that individuals should not bear responsibility for harm beyond their control.Here,we consider human judgment of responsibility for accidents involving fully automated cars through three studies with seven experiments(N=2668).We compared the responsibility attributed to the occupants in three conditions:an owner in his private fully automated car,a passenger in a driverless robotaxi,and a passenger in a conventional taxi,where none of these three occupants have direct vehicle control over the involved vehicles that cause identical pedestrian injury.In contrast to normative analyses,we show that the occupants of driverless cars(private cars and robotaxis)are attributed more responsibility than conventional taxi passengers.This dilemma is robust across different contexts(e.g.,participants from China vs the Republic of Korea,participants with first-vs third-person perspectives,and occupant presence vs absence).Furthermore,we observe that this is not due to the perception that these occupants have greater control over driving but because they are more expected to foresee the potential consequences of using driverless cars.Our findings suggest that when driverless vehicles(private cars and taxis)cause harm,their users may face more social pressure,which public discourse and legal regulations should manage appropriately. 展开更多
关键词 Fully automated vehicle accidents responsibility attribution CONTROLLABILITY FORESEEABILITY
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Research on the Collaborative Governance of Social Responsibility in Online Audiovisual Enterprises
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作者 Chuying Kang Muhammad Zaffwan Idris Juan Liu 《Social Networking》 2024年第1期1-13,共13页
This paper aims to analyze the present conditions of the social responsibility ecosystem in online audiovisual enterprises in the digital age. It focuses on the governance of social responsibility in these enterprises... This paper aims to analyze the present conditions of the social responsibility ecosystem in online audiovisual enterprises in the digital age. It focuses on the governance of social responsibility in these enterprises and conducts an in-depth analysis of the problems and influencing factors related to the social responsibility aberrations of online audiovisual enterprises. Drawing upon social responsibility theory and collaborative governance theory, this research constructs a social responsibility guidance and governance system guided by the public, supported by the voluntary fulfillment of responsibilities by online audiovisual enterprises, and based on the collaborative participation of diverse stakeholders. It explores and optimizes the implementation pathways of this system, providing theoretical support and practical guidance for promoting the sustainable development of online audiovisual enterprises. Furthermore, it aims to contribute to the creation of a harmonious Internet ecosystem. 展开更多
关键词 Online Audiovisual Enterprises Social responsibility Collaborative Governance
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Practice and Exploration of Ideological and Political Education for Postgraduate Students Under the Mentor Responsibility System
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作者 Yipin Wan Jie Jia +1 位作者 Tingting Gao Xuding Song 《Journal of Contemporary Educational Research》 2024年第4期29-34,共6页
This study aims to address the problems existing in the ideological and political education of postgraduate students,and combines the implementation of the mentor responsibility system to explore the role orientation,... This study aims to address the problems existing in the ideological and political education of postgraduate students,and combines the implementation of the mentor responsibility system to explore the role orientation,work content,and practical effects of mentors in the ideological and political education of postgraduate students.Through questionnaire surveys,interviews,and other research methods,the current situation of ideological and political education of postgraduate students under the mentor responsibility system is analyzed,and corresponding optimization strategies are proposed. 展开更多
关键词 Mentor responsibility system Postgraduate students Ideological and political education Practical exploration
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Corporate Social Responsibility and Shipping Supply Chain Risks
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作者 Wen-Chi Lo 《Economics World》 2024年第3期145-155,共11页
This study aims to investigate whether Corporate Social Responsibility(CSR)activities reduce supply chain disruptions by examining the impact of the Suez Canal obstruction on the Ever Given container ship in March 202... This study aims to investigate whether Corporate Social Responsibility(CSR)activities reduce supply chain disruptions by examining the impact of the Suez Canal obstruction on the Ever Given container ship in March 2021.This study conclude that the more responsible companies have higher returns and are less affected by this event than the less responsible companies;the less responsible companies have lower returns.The companies with better CSR have a lower impact on their supply chains when faced with disruptions in the supply chain. 展开更多
关键词 Suez Canal obstruction corporate social responsibility supply chain risks event study Ever Given container ships
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The Correlation between Corporate Social Responsibility(CSR)and Chinese Family Enterprises in China
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作者 Lijuan Lu Sengteck Tan 《电子商务学刊(中英文版)》 2024年第1期1-7,共7页
It is imperative to aggressively advocate for and transmit the ideas of corporate social responsibility as Chinese family enterprises transition into the phase of corporate inheritance.This study conducts a thorough e... It is imperative to aggressively advocate for and transmit the ideas of corporate social responsibility as Chinese family enterprises transition into the phase of corporate inheritance.This study conducts a thorough examination of existing literature to elucidate the concept and model of western corporate social responsibility.It also analyses the current state of Chinese corporate social responsibility and highlights the fulfilment of corporate social responsibility by private enterprises.Furthermore,it specifically investigates the significance of family enterprises in promoting and preserving the culture of corporate responsibility.Lastly,it delves into the correlation between corporate social responsibility and family enterprises.This study presents the process of transmission and inheritance of Chinese family firms,focusing on the influence of Chinese traditional culture,the original purpose of enterprise development,and enterprise image. 展开更多
关键词 Corporate Social responsibility(CSR) Family-Owned Businesses Inheritance and Transmission
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为谁负责与如何负责:全过程人民民主的责任逻辑 被引量:2
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作者 张力伟 《江苏行政学院学报》 北大核心 2025年第1期91-99,共9页
全过程人民民主具有独特的责任逻辑,从根本上回答了民主“为谁负责”“如何负责”的问题。“对谁负责”体现了全过程人民民主的价值意蕴。全过程人民民主在马克思主义的指导下,融汇中华优秀文化的基因,明确了民主“为了谁”的问题,在问... 全过程人民民主具有独特的责任逻辑,从根本上回答了民主“为谁负责”“如何负责”的问题。“对谁负责”体现了全过程人民民主的价值意蕴。全过程人民民主在马克思主义的指导下,融汇中华优秀文化的基因,明确了民主“为了谁”的问题,在问题导向的民主目标中落实了“人民性”的责任向度。“如何负责”体现了全过程人民民主的实践准则。“有事好商量”凸显了全过程人民民主程序的实践原则,为商量的过程提出了责任规范,体现了马克思主义交往实践观和中华优秀传统文化中的交往观,创新解决了民主“如何负责”的问题。全过程人民民主的责任逻辑使其呈现出三方面特质:“民生政治”是全过程人民民主的重要出发点和落脚点,政治生活与社会生活是全过程人民民主的实践场景,建构和谐共同体全过程人民民主的运作指向。 展开更多
关键词 全过程人民民主 责任逻辑 为谁负责 如何负责
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面向需求侧市场化响应交易细则的高耗能负荷需求响应控制策略 被引量:2
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作者 廖思阳 谢濠聪 +3 位作者 徐箭 孙元章 柯德平 蒋一博 《中国电机工程学报》 北大核心 2025年第5期1645-1657,I0001,共14页
建设含高比例新能源的新型电力系统对电力系统的调节灵活性提出新的要求。为充分挖掘需求侧灵活负荷资源,部分省份发布需求响应方案以引导电力用户参与削峰需求。需求侧中,高耗能工业负荷具备负荷单体容量大,功率可控性强等优点,但其参... 建设含高比例新能源的新型电力系统对电力系统的调节灵活性提出新的要求。为充分挖掘需求侧灵活负荷资源,部分省份发布需求响应方案以引导电力用户参与削峰需求。需求侧中,高耗能工业负荷具备负荷单体容量大,功率可控性强等优点,但其参与需求响应受限于负荷正常生产需求与缺乏最大化响应收益控制策略。由此,该文以电解铜工业负荷为例,提出面向需求侧市场化响应交易细则的高耗能负荷功率控制策略。首先,分析电解铜负荷工艺流程环节功率调节可行性并建立对应功率控制模型;建立电解铜工艺流程资源任务网络(resourcetask network,RTN)模型以描述负荷生产周期内生产状态,通过物料数量明确负荷功率调控边界。基于四川省需求响应实施方案交易细则,明确负荷响应收益结算机制及有效响应约束;考虑功率调控产生的额外成本,提出满足负荷生产安全与有效响应约束的最大化负荷响应收益的功率控制策略;最后,在不同情景下进行仿真,相较于仅满足中标响应需求,该文功率控制策略能够提升响应收益16%以上,并且在较长时间尺度响应中能够最大程度满足响应需求,验证该文功率控制策略的有效性,为工业负荷参与需求响应提供一种可行方案。 展开更多
关键词 高耗能负荷 需求侧响应 资源任务网络模型 调节成本 市场化响应交易细则
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全球新一轮关键矿产竞争的动力、趋势与中国应对 被引量:3
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作者 唐金荣 王春辉 +3 位作者 张福良 张伟波 杨宗喜 李鹏远 《中国矿业》 北大核心 2025年第5期1-8,共8页
关键矿产是支撑国家科技经济发展、保障国家安全的重要资源。准确把握全球关键矿产竞争态势,对于中国制定针对性应对策略,具有重要意义。2008年全球金融危机后,战略性新兴产业快速发展引发全球出现自冷战结束以来的新一轮关键矿产竞争热... 关键矿产是支撑国家科技经济发展、保障国家安全的重要资源。准确把握全球关键矿产竞争态势,对于中国制定针对性应对策略,具有重要意义。2008年全球金融危机后,战略性新兴产业快速发展引发全球出现自冷战结束以来的新一轮关键矿产竞争热潮,整体表现为五大趋势:一是竞争产业链化,竞争范围由上游矿产资源向全产业链延伸;二是竞争阵营化,资源国、消费国与加工国加速重组为不同竞争阵营;三是全球矿产勘查投资偏好“低风险化”,矿业企业投资风险偏好愈加保守;四是发达国家矿业投资本土化,美国、加拿大、澳大利亚三国的矿产勘查预算与矿业项目并购规模持续增加;五是资源东道国利益诉求多元化,由单纯的获取矿产品出口收益向产业发展、环境保护、民生改善、国际话语权提升等领域全面拓展。此外,中国关键矿产国际合作还面临美西方推动关键矿产供应链“去中国化”、对中国矿业企业“污名化”和“资源民族主义”加速回潮三大挑战。建议从加强同周边国家资源-产业合作、讲好中国绿色矿业故事、创新关键矿产国际合作机制三方面协同发力,构建更具韧性的关键矿产产业链供应链,为推动国内经济高质量发展、全面建成社会主义现代化强国提供坚实的能源资源保障。 展开更多
关键词 全球 关键矿产 竞争态势 挑战 中国应对
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响应面法优化Fe0/H_(2)O_(2)体系降解染料废水的工艺条件及机理 被引量:3
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作者 贾艳萍 马艳菊 +3 位作者 管文昕 杨彬 张健 张兰河 《化工学报》 北大核心 2025年第1期348-362,共15页
染料废水具有色度大、成分复杂、生物毒性强和难降解的特点。Fe^(0)/H_(2)O_(2)体系氧化能力强、反应快速高效、成本低廉,可有效去除染料废水中的难降解污染物。采用Fe^(0)/H_(2)O_(2)工艺处理染料废水,利用响应面法优化工艺运行条件,... 染料废水具有色度大、成分复杂、生物毒性强和难降解的特点。Fe^(0)/H_(2)O_(2)体系氧化能力强、反应快速高效、成本低廉,可有效去除染料废水中的难降解污染物。采用Fe^(0)/H_(2)O_(2)工艺处理染料废水,利用响应面法优化工艺运行条件,通过电子顺磁共振波谱仪(EPR)检测活性自由基,采用傅里叶变换红外光谱(FT-IR)和紫外-可见光谱(UV-Vis)分析染料废水处理前后有机物成分的变化,考察染料废水中结晶紫、藏红T、TOC、COD和色度的去除率变化,探究染料废水的降解动力学和降解机理。结果表明:在初始pH为3、Fe^(0)浓度为0.3 g/L、H_(2)O_(2)投加量为20 ml/L的条件下,利用响应面法预测结晶紫去除率为97.94%,与实测值仅相差0.36%(<2%);藏红T去除率为77.31%,与实测值仅相差1.3%(<2%)。由动力学分析可知:结晶紫、藏红T、COD和色度的降解过程符合BMG动力学模型,相关系数大于0.98,结晶紫的初始降解速率最快。由EPR分析可知:·OH为Fe^(0)/H_(2)O_(2)降解染料废水的主要活性物种;通过FT-IR和UV-Vis检测分析可知:Fe^(0)/H_(2)O_(2)工艺对结晶紫和藏红T的去除效果最好,染料分子被氧化成分子量小的中间体或小分子物质;由气相色谱-质谱(GC-MS)分析可知:结晶紫与藏红T分子结构被·OH破坏,随着反应的进行产生的中间产物逐渐被降解,最终分解为CO_(2)和H_(2)O。 展开更多
关键词 自由基 响应面模型 染料废水 动力学 降解
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基于响应面法的天然气压差发电参数优化 被引量:1
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作者 张朋岗 杨冬磊 +3 位作者 程曦 骆兴龙 李玮 李有江 《石油与天然气化工》 北大核心 2025年第2期62-70,共9页
目的解决压差发电装置发电功率低的问题,优化工艺参数。方法①通过常规㶲及高级㶲分析法发现透平膨胀机可避免外源㶲损占比达42%,表明装置自身的运行参数设置不合理,导致了高㶲损。②采用响应面法分析和优化运行参数,以进出口压力比、进口... 目的解决压差发电装置发电功率低的问题,优化工艺参数。方法①通过常规㶲及高级㶲分析法发现透平膨胀机可避免外源㶲损占比达42%,表明装置自身的运行参数设置不合理,导致了高㶲损。②采用响应面法分析和优化运行参数,以进出口压力比、进口温度、天然气体积流量作为因素变量,以发电功率、总㶲损作为响应值,设计13组试验。结果进出口压力比和天然气体积流量间的交互作用对发电功率的影响最显著,进出口压力比和天然气体积流量的交互作用、进口温度和天然气体积流量的交互作用对总㶲损的影响显著。据此,提出通过提高进出口压力比、天然气体积流量和降低进口温度的方式来进行参数优化的策略。根据优化后的工艺参数调整现场参数:进出口压力比为1.38、进口温度为30.7℃、天然气体积流量为11×10^(4)m^(3)/h,此时,发电功率达到625.3 kW,总㶲损降低了180.9 kW,其中,透平膨胀机㶲效率增至72.3%,可避免的外源㶲损减少了104.4 kW。此外,装置的年经济效益增加了114.5万元,CO_(2)的年排放量减少了1109.5 t。结论针对各类复杂的天然气处理工艺,可使用高级㶲分析与响应面分析的组合优化法。首先,利用高级㶲分析量化工艺改进的潜力;若可避免外源㶲损占比较大,则再采用响应面法进一步进行参数优化。 展开更多
关键词 天然气 压差发电 高级㶲分析 交互作用 响应面法
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爆炸作用下全户内变电站装配式墙板动力响应的有限元分析 被引量:1
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作者 李林 刘勇 +3 位作者 魏珍中 马小敏 雷建银 李世强 《高压物理学报》 北大核心 2025年第6期75-86,共12页
蜂窝芯层具有轻质、比刚度高、比强度高和比吸能高等优点。将纤维混凝土板、蜂窝芯层、铝合金板组合设计一种新型变电站装配式墙板结构,对其进行爆炸冲击实验,研究不同炸药药量、蜂窝孔径下结构的动力学响应。基于实验建立相应的有限元... 蜂窝芯层具有轻质、比刚度高、比强度高和比吸能高等优点。将纤维混凝土板、蜂窝芯层、铝合金板组合设计一种新型变电站装配式墙板结构,对其进行爆炸冲击实验,研究不同炸药药量、蜂窝孔径下结构的动力学响应。基于实验建立相应的有限元模型,数值模拟结果与实验吻合较好。通过改变炸药量和蜂窝芯层配置,详细分析了结构变形失效演化过程、后面板中点挠度、能量分配特性。结果表明:结构主要呈现前面板凹陷、后面板凸起的变形模式;纤维水泥前面板边界处发生了剪切破坏,同时蜂窝芯层被压缩,导致整体变形,随后前面板与蜂窝芯层分离,后面板中心处以及对角线处出现裂纹,并且随着结构继续响应,裂纹不断扩展,芯层压缩量也同时增加。减小蜂窝芯层孔径能够有效降低后面板的挠度。装药距离为300 mm,药量为300、500和700 g时,小孔径蜂窝结构后面板中点的挠度相较于大孔径蜂窝结构分别降低了18.5%、17.1%和18.1%,小孔径蜂窝结构的吸能比大孔径蜂窝结构分别增大了7.8%、6.7%和2.2%,小孔径蜂窝结构具有较好的抗冲击性能。爆炸载荷下,纤维混凝土前面板的吸收能量最大,占50%以上;蜂窝芯层的能量吸收次之,占比为45%左右;纤维混凝土后面板的吸能较少,在5%以内。 展开更多
关键词 爆炸载荷 装配式墙板结构 纤维混凝土板 力学响应 动力响应
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社会生态视角下婴幼儿回应性喂养影响因素研究进展 被引量:1
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作者 刘念 徐玉英 +1 位作者 张玺 余立平 《中国儿童保健杂志》 北大核心 2025年第3期308-312,334,共6页
回应性喂养已被纳入全球婴幼儿喂养策略,对婴幼儿早期发展具有重要意义,但其在实施过程中受众多因素的影响。本综述基于社会生态系统理论从婴幼儿个体因素、养育照护者及家庭相关因素、社会环境及政策因素三个层面分析影响婴幼儿回应性... 回应性喂养已被纳入全球婴幼儿喂养策略,对婴幼儿早期发展具有重要意义,但其在实施过程中受众多因素的影响。本综述基于社会生态系统理论从婴幼儿个体因素、养育照护者及家庭相关因素、社会环境及政策因素三个层面分析影响婴幼儿回应性喂养的原因,以期为今后制定有效的干预措施提供循证依据。 展开更多
关键词 回应性喂养 社会生态学 婴幼儿
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