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STIRPAT模型在探究江苏省建筑业碳排放影响因素中的应用
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作者 张伟健 季柳金 +1 位作者 杨恒亮 夏永芳 《绿色建造与智能建筑》 2026年第1期11-14,共4页
STIRPAT模型作为分析人为活动对环境影响的常用模型,已得到广泛应用与优化,在建筑碳排放领域的应用尤为普遍。本文基于STIRPAT模型,综述了大量学者对该模型的变换与新影响因素的纳入研究,探究不同影响因素对江苏省建筑业碳排放的作用机... STIRPAT模型作为分析人为活动对环境影响的常用模型,已得到广泛应用与优化,在建筑碳排放领域的应用尤为普遍。本文基于STIRPAT模型,综述了大量学者对该模型的变换与新影响因素的纳入研究,探究不同影响因素对江苏省建筑业碳排放的作用机制,为碳排放问题的解决提供新方向与参考。 展开更多
关键词 stirpat模型 江苏省 碳排放 影响因素
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Construction of School-Enterprise Community Education Model for Software Technology Specialty Driven by Information Technology Application Innovation Industry:Taking Shanwei Institute of Technology as an Example
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作者 Xiaorong Ye Zhirui Wu Yanzhao Liang 《Journal of Contemporary Educational Research》 2025年第7期70-77,共8页
The software technology field is facing new talent demands brought by the Information Technology Application Innovation(ITAI)industry.This paper takes Shanwei Institute of Technology as an example to deeply explore th... The software technology field is facing new talent demands brought by the Information Technology Application Innovation(ITAI)industry.This paper takes Shanwei Institute of Technology as an example to deeply explore the construction of a school-enterprise community education model driven by the ITAI industry.It establishes the Kirin Workshop training base to facilitate talent cultivation,integrates the ITAI Application Adaptation Center to enhance technical capabilities,cooperates with Liqi Technology to establish an industrial college for government talent training,adjusts the professional curriculum system,and arranges for students to participate in ITAI vocational skills competitions.The school-enterprise collaborative cultivation mechanism meets the talent needs of the ITAI field,with effective practical results.This paper also points out the shortcomings of the school-enterprise collaborative education model in the ITAI industry and provides optimization methods to explore new paths for industry-education integration and serve the development of regional and national ITAI industries^([1]). 展开更多
关键词 Information technology Application Innovation(ITAI)industry School-enterprise cooperation Education model Software technology specialty
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Research on the Optimization of Digital Technology-Based Higher Education Teaching Models
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作者 Yuanwei Zhao 《Journal of Contemporary Educational Research》 2025年第6期100-105,共6页
With the advancement of digital technology,new technologies such as artificial intelligence,big data,and cloud computing have gradually permeated higher education,leading to fundamental changes in teaching and learnin... With the advancement of digital technology,new technologies such as artificial intelligence,big data,and cloud computing have gradually permeated higher education,leading to fundamental changes in teaching and learning methods.Therefore,in the process of reforming and developing higher education,it is essential to take digital technology empowering the optimization of the education industry as a breakthrough,focusing on five key areas:the construction of smart classrooms,the digital integration of teaching resources,the development of personalized learning support systems,the reform of online-offline hybrid teaching,and the intelligentization of educational management.This paper also examines the experiences,challenges,and shortcomings of typical universities in using digital technology to improve teaching quality,optimize resource allocation,and innovate teaching management models.Finally,corresponding countermeasures and suggestions are proposed to facilitate the smooth implementation of digital transformation in higher education institutions. 展开更多
关键词 Digital technology Higher education Teaching model optimization Smart classroom Hybrid teaching
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Leveraging Green AI Technology to Build Sustainable Schools:A Conceptual Model Based on AI Agents
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作者 Yiting Qiu Yihan Lu +2 位作者 Guoqing Xia Md Munir Hayet Khan Deshinta Arrova Dewi 《Journal of Electronic Research and Application》 2025年第2期150-158,共9页
The integration of Green Artificial Intelligence(AI)technologies into educational systems offers a promising avenue to enhance operational efficiency while addressing sustainability challenges.Through a rigorous three... The integration of Green Artificial Intelligence(AI)technologies into educational systems offers a promising avenue to enhance operational efficiency while addressing sustainability challenges.Through a rigorous three-phase methodology combining literature review,AI agent development,and participatory workshop-based case analysis,this paper highlights the pivotal role of AI agents,as applications of Green AI technologies,in driving transformative outcomes within schools.By directly improving self-learning efficiency and reducing learning costs for students,enhancing management and service efficiency,reducing labor costs for schools,as well as minimizing resource dependence for both teachers and students,AI agents create a foundation for sustainable operations.These direct effects generate positive spillover effects,cascading into broader outcomes,including innovation performance,economic efficiency,and environmental sustainability,aligning with the United Nations Sustainable Development Goals(SDGs).By presenting a comprehensive conceptual model,this study demonstrates the pathways through which Green AI contributes to sustainable development in education and emphasizes its critical role in bridging technological innovation with sustainability.This framework provides significant theoretical insights for further empirical research while offering actionable strategies for policymakers and educators to harness Green AI for building sustainable schools with a student-centered approach. 展开更多
关键词 Green AI technology AI agents Conceptual model Spillover effects Sustainable development
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Systematic Literature Review of Technology Acceptance Models in Learning Management Systems(LMSs)
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作者 Rizki Ismail Hasibuan Iskandar Muda Sambas Ade Kesuma 《Journal of Modern Accounting and Auditing》 2025年第2期71-80,共10页
The integration of Learning Management Systems(LMSs)into educational settings is becoming increasingly common,especially in the digital field.Understanding the factors influencing the acceptance and effective use of L... The integration of Learning Management Systems(LMSs)into educational settings is becoming increasingly common,especially in the digital field.Understanding the factors influencing the acceptance and effective use of LMS is essential to ensure successful implementation.The Technology Acceptance Model(TAM)has been widely used to check user acceptance of various technologies,including LMS.This study conducted a systematic literature review(SLR)to analyze existing research on the application of TAM in the context of LMS.A comprehensive search of the academic database was conducted to identify relevant studies published in 2010-2025.The review synthesizes findings related to the core constructs of TAM—Perceived Usability,Perceived Ease of Use,Behavioral Intent,and Actual Use—as well as extended factors such as system quality,self-efficacy,and social influence.The results reveal circumstantial evidence supporting the predictive power of TAM in LMS adoption,while also highlighting emerging trends and gaps in the literature.This review contributes to a deeper understanding of user acceptance in a digital learning environment and provides recommendations for future research and practical LMS implementation strategies. 展开更多
关键词 technology Acceptance model E-Learning Management System systematic literature review
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Research on the Application of Digital Modeling Technology in Nixing Pottery from the Perspective of Maker Education Theory
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作者 Jiaqing Lyu Xue Bai Zhi Liao 《Journal of Contemporary Educational Research》 2025年第7期152-157,共6页
In the context of global digital transformation and the rising prominence of maker education,this study explores the innovative integration of digital modeling technologies with traditional Nixing Pottery craftsmanshi... In the context of global digital transformation and the rising prominence of maker education,this study explores the innovative integration of digital modeling technologies with traditional Nixing Pottery craftsmanship.By constructing a teaching framework under maker education theory,the research investigates how 3D modeling,CAD design,and 3D printing technologies can empower learners to address challenges in cultural heritage preservation and artistic innovation.Through experimental teaching and case analysis,the study verifies that this integrated approach significantly enhances learners’digital literacy,creative thinking,and cultural identity while optimizing Nixing Pottery’s production processes and design possibilities.The findings contribute to theoretical models of technology-enhanced craft education and provide practical pathways for the digital transformation of intangible cultural heritage. 展开更多
关键词 Maker education theory Digital modeling technology Nixing Pottery Educational innovation Cultural heritage digitization 3D printing Cross-disciplinary education Artisan revitalization
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Quantitative analysis of the impact factors of conventional energy carbon emissions in Kazakhstan based on LMDI decomposition and STIRPAT model 被引量:7
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作者 李佳秀 陈亚宁 +1 位作者 李稚 刘志辉 《Journal of Geographical Sciences》 SCIE CSCD 2018年第7期1001-1019,共19页
Quantitative analysis of the impact factors in energy-related CO2 emissions serves as an important guide for reducing carbon emissions and building an environmentally-friendly society. This paper aims to use LMDI meth... Quantitative analysis of the impact factors in energy-related CO2 emissions serves as an important guide for reducing carbon emissions and building an environmentally-friendly society. This paper aims to use LMDI method and a modified STIRPAT model to research the conventional energy-related CO_2 emissions in Kazakhstan after the collapse of the Soviet Union. The results show that the trajectory of CO2 emissions displayed U-shaped curve from 1992 to 2013. Based on the extended Kaya identity and additive LMDI method, we decomposed total CO2 emissions into four influencing factors. Of those, the economic active effect is the most influential factor driving CO2 emissions, which produced 110.86 Mt CO2 emissions, with a contribution rate of 43.92%. The second driving factor is the population effect, which led to 11.87 Mt CO2 emissions with a contribution rate of 4.7%. On the contrary, the energy intensity effect is the most inhibiting factor, which caused –110.90 Mt CO2 emissions with a contribution rate of –43.94%, followed by the energy carbon structure effect resulting in –18.76 Mt CO2 emissions with a contribution rate of –7.43%. In order to provide an in-depth examination of the change response between energy-related CO2 emissions and each impact factor, we construct a modified STIRPAT model based on ridge regression estimation. The results indicate that for every 1% increase in population size, economic activity, energy intensity and energy carbon structure, there is a subsequent increase in CO_2 emissions of 3.13%, 0.41%, 0.30% and 0.63%, respectively. 展开更多
关键词 quantitative analysis energy-related C02 emissions stirpat model Kazakhstan
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数字技术视角下中国制造业碳排放的驱动因素与趋势研究——基于随机森林与STIRPAT模型的综合分析
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作者 李娟伟 冉临璇 《开发研究》 2025年第2期62-75,共14页
为了探究数字技术等因素对制造业碳排放的影响,综合利用随机森林与STIRPAT模型,选取我国2008—2021年省际面板数据,对比考察数字技术相关因素与经济发展、人口等传统因素对制造业碳排放影响的差异,并根据不同情景对省际制造业碳排放的... 为了探究数字技术等因素对制造业碳排放的影响,综合利用随机森林与STIRPAT模型,选取我国2008—2021年省际面板数据,对比考察数字技术相关因素与经济发展、人口等传统因素对制造业碳排放影响的差异,并根据不同情景对省际制造业碳排放的趋势进行预测和分析。研究结果显示,与经济发展、城镇化率等传统因素加剧制造业碳排放规模的作用相反,数字技术及其紧密相关的制造业集聚、能源强度、制造业结构以及研发投入等因素不但对降低制造业碳排放有着积极且重要的影响,还存在鲜明的非线性特征。对比不同政策情景,如果能够加强对经济发展、人口等传统因素的调控,在数字技术及其相关因素驱动下,未来我国制造业碳排放规模与无约束条件下的潜在水平相比,总体下降幅度将超过70%,而且制造业产出规模相对较小或者制造业产值规模较大且以传统产业为主的省(区、市),数字技术及其相关因素的碳减排效应将更加明显。因此,各地政府应该加大对数字技术研发和推广的投入力度,促进制造业的能源效率及其结构优化升级,为地方政府落实碳减排目标提供有利条件。 展开更多
关键词 制造业 碳减排 随机森林模型 stirpat模型 数字技术
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基于STIRPAT模型下城市人口密度对碳排放影响的实证分析
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作者 李钰 吕会影 《山西师范大学学报(自然科学版)》 2025年第2期95-102,共8页
文章基于STIRPAT模型构建动态面板数据模型,实证分析了城市人口密度对人均碳排放量的影响,并对碳排放量最优的城市人口密度进行测算.结果表明,中国城市人口密度和人均碳排放量呈“U”形关系.在城市人口密度变化中,经济水平、碳排放技术... 文章基于STIRPAT模型构建动态面板数据模型,实证分析了城市人口密度对人均碳排放量的影响,并对碳排放量最优的城市人口密度进行测算.结果表明,中国城市人口密度和人均碳排放量呈“U”形关系.在城市人口密度变化中,经济水平、碳排放技术水平、第二产业占比对城市绿地面积都对碳排放具有正影响,第三产业占比和公共交通对碳排放具有负影响.城市建成区面积应随着人口数量的增长稳步扩张,以保证经济增长和低碳环保的和谐发展.进而提出政策建议:城市规模合理扩张,推进产业转型升级,促进能源结构转变,提高低碳环保意识. 展开更多
关键词 城市化 人口密度 碳排放 stirpat模型
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基于STIRPAT模型的海岸带生态韧性影响因素研究——以深圳市为例 被引量:8
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作者 祁小丽 栾博 +2 位作者 周文君 罗珈柠 俞露 《中国环境科学》 北大核心 2025年第1期416-429,共14页
本研究以深圳市为案例,建立海岸带生态韧性评估框架,开展了海岸带生态韧性分区评价,运用了STIRPAT模型对影响海岸带生态韧性的社会经济因素进行量化分析并识别关键影响因素及影响程度,提出了海岸带保护修复建议.结果表明,2021年深圳市... 本研究以深圳市为案例,建立海岸带生态韧性评估框架,开展了海岸带生态韧性分区评价,运用了STIRPAT模型对影响海岸带生态韧性的社会经济因素进行量化分析并识别关键影响因素及影响程度,提出了海岸带保护修复建议.结果表明,2021年深圳市海岸带生态韧性综合评价得分在8.97~92.12之间,具有明显的东西部空间分异特征,东部海岸带生态韧性较高而西部较低,海岸带生态韧性水平与本底地理特征、城市开发程度具有密切关联.区域富裕度是影响深圳市海岸带生态韧性的主要负面因素,填海面积、环境污染、人口密度等因素对海岸带生态韧性也具有负面的影响;万元GDP水耗的降低对海岸带生态韧性有正向影响,表明技术创新和高质量经济发展会促进海岸带生态韧性提升.本研究成果可为高密度城市海岸带生态韧性研究提供新方法,为海岸带管理提供科学依据. 展开更多
关键词 海岸带生态韧性 空间分异 stirpat模型 影响因素 深圳
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Progress and Knowledge Transfer from Science to Technology in the Research Frontier of CRISPR Based on the LDA Model 被引量:3
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作者 Yushuang Lyu Muqi Yin +1 位作者 Fangjie Xi Xiaojun Hu 《Journal of Data and Information Science》 CSCD 2022年第1期1-19,共19页
Purpose:This study explores the underlying research topics regarding CRISPR based on the LDA model and figures out trends in knowledge transfer from science to technology in this area over the latest 10 years.Design/m... Purpose:This study explores the underlying research topics regarding CRISPR based on the LDA model and figures out trends in knowledge transfer from science to technology in this area over the latest 10 years.Design/methodology/approach:We collected publications on CRISPR between 2011 and2020 from the Web of Science,and traced all the patents citing them from lens.org.15,904 articles and 18,985 patents in total are downloaded and analyzed.The LDA model was applied to identify underlying research topics in related research.In addition,some indicators were introduced to measure the knowledge transfer from research topics of scientific publications to IPC-4 classes of patents.Findings:The emerging research topics on CRISPR were identified and their evolution over time displayed.Furthermore,a big picture of knowledge transition from research topics to technological classes of patents was presented.We found that for all topics on CRISPR,the average first transition year,the ratio of articles cited by patents,the NPR transition rate are respectively 1.08,15.57%,and 1.19,extremely shorter and more intensive than those of general fields.Moreover,the transition patterns are different among research topics.Research limitations:Our research is limited to publications retrieved from the Web of Science and their citing patents indexed in lens.org.A limitation inherent with LDA analysis is in the manual interpretation and labeling of"topics".Practical implications:Our study provides good references for policy-makers on allocating scientific resources and regulating financial budgets to face challenges related to the transformative technology of CRISPR.Originality/value:The LDA model here is applied to topic identification in the area of transformative researches for the first time,as exemplified on CRISPR.Additionally,the dataset of all citing patents in this area helps to provide a full picture to detect the knowledge transition between S&T. 展开更多
关键词 CRISPR LDA model Knowledge transfer Transformative technology
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基于STIRPAT模型的中国多情景碳排放预测及减排策略
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作者 许晓敏 姚润坤 +1 位作者 孔亚楠 付尧 《新经济导刊》 2025年第1期64-77,共14页
当前,我国正处于逐步实现可持续发展和生态环境保护的阶段,未来能源消费直接关系着我国“双碳”目标的实现。目前,大多碳排放研究主要采用单一分解模型或碳排放预测方法,缺少对碳排放影响因素的判断筛选。因此,本文基于STIRPAT和岭回归... 当前,我国正处于逐步实现可持续发展和生态环境保护的阶段,未来能源消费直接关系着我国“双碳”目标的实现。目前,大多碳排放研究主要采用单一分解模型或碳排放预测方法,缺少对碳排放影响因素的判断筛选。因此,本文基于STIRPAT和岭回归模型对我国碳排放量进行预测并提出减排策略。首先,根据我国2003–2023年能源消费量、能源结构等相关数据,对我国能源消费结构和碳排放变化情况进行分析。其次,基于Pearson相关系数法筛选出相关性高的特征因子,构建碳排放影响因素体系。然后,构建基于STIRPAT和岭回归模型的碳排放预测模型,STIRPAT模型能够确定碳排放的主要影响因素,岭回归则可以解决多重共线性问题,并利用我国历年的能源消费相关数据进行预测模型检验。接着,运用情景分析法,通过设置基准情景、低碳情景和高碳情景,对不同情景下我国2024–2033年未来碳排放趋势进行预测。最后,结合多情景预测结果,提出碳减排的策略建议,为实现我国“双碳”目标提供决策支持。 展开更多
关键词 stirpat模型 碳排放 低碳发展 岭回归 减排策略
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Scenario analysis of the Indonesia carbon tax impact on carbon emissions using system dynamics modeling and STIRPAT model 被引量:2
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作者 Andewi Rokhmawati Vita Sarasi Lailan Tawila Berampu 《Geography and Sustainability》 CSCD 2024年第4期577-587,共11页
This study aims to develop a system dynamic(SD)forecasting model based on the STIRPAT model to forecast the effect of an IDR 30 per kg CO_(2)e carbon tax on carbon emissions,estimate future carbon emissions under ten ... This study aims to develop a system dynamic(SD)forecasting model based on the STIRPAT model to forecast the effect of an IDR 30 per kg CO_(2)e carbon tax on carbon emissions,estimate future carbon emissions under ten scenarios,without and with the carbon tax,and estimate the environmental Kuznets curve(EKC)to predict Indonesia’s carbon emission peak.Carbon emission drivers in this study are decomposed into several factors,namely energy structure,energy intensity,industrial structure,GDP per capita,population,and fixed-asset investment.This study included nuclear power utilization starting in 2038.The research gaps addressed by this study compared to previous research are(1)use of the ex-ante approach,(2)inclusion of nuclear power plants,(3)testing the EKC hypothesis,and(4)contribution to government policy.The simulation results show that under the carbon tax,carbon emissions can be reduced by improving renewable energy structures,adjusting industrial structures to green businesses,and emphasizing fixed asset investment more environmentally friendly.Moreover,the result approved the EKC hypothesis.It shows an inverse U-shaped curve between GDP per capita and CO_(2)emissions in Indonesia.Indonesia’s fastest carbon emission peak is under scenario seven and is expected in 2040.Although an IDR 30 per kg CO_(2)e carbon tax and nuclear power will take decades to reduce carbon emissions,the carbon tax can still be a reference and has advantages to implement.This result can be a good beginning step for Indonesia,which has yet to gain experience with a carbon tax that can be implemented immediately and is helpful to decision-makers in putting into practice sensible measures to attain Indonesia’s carbon emission peaking.This research provides actionable insights internationally on carbon tax policies,nuclear energy adoption,EKC dynamics,global policy implications,and fostering international cooperation for carbon emission reductions. 展开更多
关键词 Carbon emissions Carbon tax System dynamics Environmental Kuznets curve stirpat model
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基于STIRPAT模型的广西碳达峰路径 被引量:16
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作者 黄威翔 高川作 +3 位作者 吴波 陈坦 杨婷 张冰 《环境科学》 北大核心 2025年第2期682-695,共14页
为保障西部地区在发展的同时实现碳达峰的目标,以广西为例,收集2000~2021年广西人口、经济、社会、能源和城市发展等方面的统计数据,根据联合国政府间气候变化专门委员会(IPCC)推荐的方法核算2000~2021年的碳排放量,采用岭回归识别影响... 为保障西部地区在发展的同时实现碳达峰的目标,以广西为例,收集2000~2021年广西人口、经济、社会、能源和城市发展等方面的统计数据,根据联合国政府间气候变化专门委员会(IPCC)推荐的方法核算2000~2021年的碳排放量,采用岭回归识别影响碳排放的关键因素,构建STIRPAT碳排放预测模型,预测3种典型发展路径情景下广西2022~2040年碳排放量.结果表明,2000~2021年广西的CO_(2)排放总量呈现整体上升趋势,从2000年的95.49 Mt增长到2021年的390.15 Mt,年均增长率为6.93%.能源结构、产业结构、城镇化率是影响广西碳排放的三大显著影响因素.高碳发展路径下,到2040年广西碳排放量达623.32 Mt,中碳发展路径下在2040年达591.20 Mt,而低碳发展路径下在2035年达到峰值531.99 Mt.3种典型发展路径情景下,广西实现碳达峰需要面对不同的减排压力,只有低碳发展路径可能在2040年前实现碳达峰,如果想实现2030年碳达峰,则需进一步加强绿色低碳高质量发展. 展开更多
关键词 碳达峰 碳排放 广西 stirpat模型 岭回归
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Dynamic models of technology management capability development based on knowledge diffusion 被引量:1
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作者 Weiwei Wu Bo Yu Jian Wang 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2011年第2期228-237,共10页
Technology management is recognized as a key for organizations to achieve competitiveness. How to promote an organization’s technology management capability is of great significance in creating efficiencies and achie... Technology management is recognized as a key for organizations to achieve competitiveness. How to promote an organization’s technology management capability is of great significance in creating efficiencies and achieving a competitive edge. The knowledge essence of technology management capability is introduced and then the correlation between knowledge diffusion and the development of technology management capability is discussed. Further, the basic and extended dynamic models of the development of technology management capability are constructed, and is applied into an enterprise. The results show that the dynamic models can well explain how the knowledge improves the development of technology management capability, and they can be used as an useful tool by an enterprise to promote technology management capability. Finally, the managerial implications of the models are discussed. 展开更多
关键词 technology management knowledge diffusion dynamic model.
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Modeling and gender difference analysis of acceptance of autonomous driving technology 被引量:2
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作者 Chen Yuexia Zha Qifen +2 位作者 Jing Peng Cheng Hengquan Shao Danning 《Journal of Southeast University(English Edition)》 EI CAS 2021年第2期216-221,共6页
In order to deeply analyze the differences in the acceptance of autonomous driving technology among different gender groups,a multiple indicators and multiple causes model was constructed by integrating a technology a... In order to deeply analyze the differences in the acceptance of autonomous driving technology among different gender groups,a multiple indicators and multiple causes model was constructed by integrating a technology acceptance model and theory of planned behavior to comprehensively reveal the gender differences in the influence mechanisms of subjective and objective factors.The analysis is based on data collected from Chinese urban residents.Among objective factors,age has a significant negative impact on women's perceived behavior control and a significant positive impact on perceived ease of use.Education has a significant positive impact on men's perceived behavior control,and has a strong positive impact on women's perceived usefulness(PU).For men,income and education are found to have strong positive impacts on perceived behavior control.Among subjective factors,perceived ease of use(PEU)has the greatest influence on women's behavior intention,and it is the only influential factor for women's intention to use autonomous driving technology,with an influence coefficient of 0.72.The influencing path of men's intention to use autonomous driving technology is more complex.It is not only directly affected by the significant and positive joint effects of attitude and PU,but also indirectly affected by perceived behavior controls,subjective norms,and PEU. 展开更多
关键词 autonomous vehicle acceptance of autonomous driving technology technology acceptance model theory of planned behavior multiple indicators and multiple causes model
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Multi Model Technology and Its Application in the Integration of CAD/CAM/CAE 被引量:1
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作者 XU Xiang-yang, WANG Yan-yan (Automotive Engineering College, Harbin Institute of Technology Weiha i, Shandong 264209, China) 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第S1期215-216,共2页
The globalization and the intensive competition of th e automotive market require shortening the product development cycle, improving the quality and reducing the cost. Optimizing the product development process, b ui... The globalization and the intensive competition of th e automotive market require shortening the product development cycle, improving the quality and reducing the cost. Optimizing the product development process, b uilding product’s consistent defining model for life cycle, and realizing the in tegration of CAD/CAM/CAE and Concurrent Engineering (CE) become the means to acc ept the challenge. A new product modeling technology, Multi Model Technology (MM T), is provided in this paper to meet the needs of the challenge for automotive powertrain product development. First, the paper introduces the concept of Multi Model Technology. MMT introduce s Object-oriented Technology (OT) into product modeling process and combine OT with feature-based modeling technology. With the help of OT, MMT builds product object model to support system level management in product development. The obj ect model of the product is a Multi Model Structure. The MMS consists of finish part model level (assembly model level), rough part model level (part model leve l), function model level and basic model level. Every models in the MMS is creat ed by feature-based technology in design process. In this case, models in the M MS of product can be shared by casting mould, sand core and sand core mould. The refore, CAD engineers, CAE engineers and CAM engineers can work concurrently and the integration of CAD/CAM/CAE can be realized. Second, MMT is applied in cylinder head development. The multi model structures of cylinder head, its casting mould, sand core and sand core mould are built, an d the process-oriented feature models of every objects in the multi model struc tures are modeled, the application of different model objects in development pro cess is analyzed. The integrated modeling technology of cylinder head, its casti ng mould, sand core and sand core mould under MMT is studied. And the concurrent engineering oriented integration method of CAD/CAE and the method to realize th e integration of CAD/CAE under MMT are also discussed. Based on above, the integ ration of CAD/CAM/CAE of cylinder head is realized in automotive powertrain prod uct. The practice results shows that the modeling technology in this paper can optimi ze the development process, realize the data sharing and concurrent engineering in the product development process. 展开更多
关键词 modeling technology CAD/CAM/CAE INTEGRATION cy linder head
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The driving force of water resource stress change based on the STIRPAT model:take Zhangye City as a case study 被引量:2
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作者 Xia Tang XinYuan Wang Lei Feng 《Research in Cold and Arid Regions》 CSCD 2021年第4期337-348,共12页
A prominent contradiction between supply and demand of water resources has restricted local development in social and economic aspects of Zhangye City,located in a typical arid region of China.Our study quantified the... A prominent contradiction between supply and demand of water resources has restricted local development in social and economic aspects of Zhangye City,located in a typical arid region of China.Our study quantified the Water Resource Stress Index(WRSI)from 2003 to 2017 and examined the factors of population,urbanization level,GDP per capita,Engel coefficient,and water consumption per unit of GDP by using the extended stochastic impact by regression on population,affluence and technology(STIRPAT)model to find the key factors that impact WRSI of Zhangye City to relieve the pressure on water resources.The ridge regression method is applied to improve this model to eliminate multicollinearity problems.The WRSI system was developed from the following three aspects:water resources utilization(WR),regional economic development water use(WU),and water environment stress(WE).Results show that the WRSI index has fallen from 0.81(2003)to 0.17(2017),with an average annual decreased rate of 9.8%.Moreover,the absolute values of normalized coefficients demonstrate that the Engel coefficient has the largest positive contribution to increase WRSI with an elastic coefficient of 0.2709,followed by water consumption per unit of GDP and population with elastic coefficients of 0.0971 and 0.0387,respectively.In contrast,the urbanization level and GDP per capita can decrease WRSI by−0.2449 and−0.089,respectively.The decline of WRSI was attributed to water-saving society construction which included the improvement of water saving technology and the adjustment of agricultural planting structures.Furthermore,this study demonstrated the feasibility of evaluating the driving forces affecting WRSI by using the STIRPAT model and ridge regression analysis. 展开更多
关键词 water resource stress index stirpat model driving force analysis water scarcity
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Influences of Limited Ammonium Nitrogen and Water Temperature on the Urban Stream Restoration Using Bacterial Technology – View from the Perspective of Numerical Modelling 被引量:1
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作者 Doddi Yudianto Yuebo Xie 《Journal of Water Resource and Protection》 2010年第3期227-234,共8页
To complete the previously information issued on the feasibility study and some technical challenges identi-fied from the application of bacterial technology, this study presents another characteristics of numerical o... To complete the previously information issued on the feasibility study and some technical challenges identi-fied from the application of bacterial technology, this study presents another characteristics of numerical output as the bacterial growth is now also limited to ammonium nitrogen and water temperature. Based on the results obtained, it is found that the degradation of readily biodegradable COD will be much slower be-cause of lower bacterial growth. At certain period, the COD concentration will increase and be plotted higher later on compared to the model which is limited only to substrate and oxygen. Besides the ammonium nitro-gen, other parameters i.e. particulate products from COD decay and particulate degradable organic nitrogen will also increase soon after certain time. Considering the increase of ammonium nitrogen as it is also con-verted to nitrate nitrogen, it can be predicted that some algae may show up during the treatment processes. When the model is simulated under different water temperature, slower biodegradation process is presented at lower water temperature. Because the bacteria grow better at higher water temperature, more oxygen is then required. Finally, from this study, it is also identified that the artificial mixing and addition of oxygen at initial stage of treatment will considerably influence the restoration. 展开更多
关键词 STREAM RESTORATION BACTERIAL technology Polluted Urban STREAMS Numerical modelling MATLAB
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Maintenance and Management Model for the Urban Stereo Landscape Forest in Chongqing Academy of Science and Technology 被引量:1
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作者 WANG Zhengchun CHEN Lina +5 位作者 JIANG Haiyan HE Bangliang ZHOU Fei JIANG Xinxing CHEN Daojing YANG Bo 《Journal of Landscape Research》 2012年第11期4-10,共7页
Based on landscaping practices in the stereo landscape demonstration project of Chongqing Academy of Science and Technology (CAST),current management and maintenance of the stereo landscapes were introduced by analyzi... Based on landscaping practices in the stereo landscape demonstration project of Chongqing Academy of Science and Technology (CAST),current management and maintenance of the stereo landscapes were introduced by analyzing maintenance and management of the plants in the stereo landscape forest.The maintenance and management models were summarized according to the management styles,concrete measures and new technologies were studied,laws and key points for the maintenance and management in different seasons were given,and finally deficiencies and solutions were proposed to improve the future maintenance and management. 展开更多
关键词 Management model STEREO LANDSCAPE CHONGQING ACADEMY of Science and technology (CAST)
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