A cross-sectional survey of 489 male subjects in the age group 15 to 65 years engageddirectly or indirectly in mango cultivation along with 208 control subjects was carried out to find their socio-economic, environmen...A cross-sectional survey of 489 male subjects in the age group 15 to 65 years engageddirectly or indirectly in mango cultivation along with 208 control subjects was carried out to find their socio-economic, environmental and health conditions. The conditions like high illiteracy rate (49.5%), poverty (PCI less than Rs 100 per month, 52.2%), poor housing (mud houses, 66.7%) unsafe water supply (78.6%) were prevailing in the surveyed population. The high respiratory morbidity may be attributed to high prevalence of smoking andprolonged inhalation of organic dusts during farming operation associated with illiteracyand poor socio-economic status. Gastrointestinal disorders were related to poor hygienic conditions, smoking and consumption of contaminated water. The symptoms pertaining to CNS, skin and eyes were found to be associated with exposure to pesticides展开更多
The paper is actually a literary research on （re）constructing cultural image of post-yugoslavian society, formed through literary sources, i.e., poetry. Using examples of award-winning young authors--Bojan Krivokapi...The paper is actually a literary research on （re）constructing cultural image of post-yugoslavian society, formed through literary sources, i.e., poetry. Using examples of award-winning young authors--Bojan Krivokapic, Mirko Bozic, and Sima Majic, different types of so-called engaged poetry are indicated. This kind of poetry is used to subtly, critically, or in a very subversive way relate to the existing world, but also a new postmodern identity is formed through specific and carefully chosen poetic lexis, deprived of any kind of structure or limitation. The poetry of mentioned authors is used as a provisory example in order to indicate that post-war period （as well as postmodern time） changes the perception of identity, from nationally and politically oriented structure to individual and subversive, conventions-free comprehension of Oneself. Although the three authors are very different in style and expression, what brings them together is tendency to escape conventional and traditional cultural images in order to emphasize the importance of Being Different, but Equally Rightful.展开更多
This study explores the phenomenon of human hoping and its role as one addressed times of deep suffering. Vaclav Havel＇s writing on ＂deep hope＂ and Maurice Merleau-Ponty＇s classic work on embodiment were seen as p...This study explores the phenomenon of human hoping and its role as one addressed times of deep suffering. Vaclav Havel＇s writing on ＂deep hope＂ and Maurice Merleau-Ponty＇s classic work on embodiment were seen as points of intersection with Engaged Buddhist teachings. In-depth interviews with two Engaged Buddhists supported the premise of this paper： Deep or embodied hope is quite different from ordinary wishing or ＂hoping＂ and plays a positive role as one moved through their suffering process.展开更多
Prof. Yang Fujia, a nuclearphysicist and educator, hasbeen elected as the Chancel-lor of the University of Nottingham,in the U.K. the first Chinese scholarto hold such a position in a Britishacademic institution, acco...Prof. Yang Fujia, a nuclearphysicist and educator, hasbeen elected as the Chancel-lor of the University of Nottingham,in the U.K. the first Chinese scholarto hold such a position in a Britishacademic institution, according tothe University’s public affairs office. "I feel privileged," said Prof.Yang. "And it is also an honor展开更多
Objective: The purpose of this study is to examine the relationship between job characteristics (job autonomy,job feedback,skill variety,task identity,task significance) and work engagement of nurses in Malaysia.Metho...Objective: The purpose of this study is to examine the relationship between job characteristics (job autonomy,job feedback,skill variety,task identity,task significance) and work engagement of nurses in Malaysia.Methods: A survey using self-administered questionnaires was used to collect data from a sample of 856 staff nurses working in eight public hospitals in Malaysia.A shortened nine-item version of the Utrecht Work Engagement Scale(UWES-9) was used to measure work engagement.The UWES-9 comprises three dimensions,which was measured with three items each: vigor,dedication,and absorption.Job characteristics (job autonomy,job feedback,skill variety,task identity,task significance) were measured with the corresponding subscales of the Job Diagnostic Survey.Each subscale consisted of three items.Hypotheses were tested using hierarchical regression analysis.Results: Findings indicated that all the five demographic variables (age,marital status,education,organizational tenure,job tenure) were unrelated to work engagement.The results further revealed that job autonomy (β=0.19,P < 0.01),job feedback (β=0.10,P < 0.01),task identity (β=0.13,P < 0.01),and task significance (β=0.08,P< 0.05) were positively related to work engagement.Skill variety (β=0.03,P> 0.05),however,did not affect work engagement.Conclusion: Job autonomy,job feedback,task identity,and task significance are important factors in predicting work engagement.The findings of this study highlighted the need to incorporate these core dimensions in nursing management to foster work engagement.展开更多
Background: Based on the experience of hospital nurses, the aim of this study is to explore the phenomenon of how work-engaged nurses stay healthy in relationally demanding jobs involving very sick and/or dying patien...Background: Based on the experience of hospital nurses, the aim of this study is to explore the phenomenon of how work-engaged nurses stay healthy in relationally demanding jobs involving very sick and/or dying patients. Method: In-depth interviews were conducted with ten work-engaged nurses employed at the main hospital in one region in Norway. The interviews were interpreted using the Interpretative Phenomenological Analysis method (IPA). Results: The results indicate the importance of using the personal resources: authenticity and a sense of humour for staying healthy. The nurses’ authenticity, in the sense of having a strong sense of ownership towards their personal life experiences, and a sense of having a meaningful life in line with their own values and interests, was an important element when they considered their own health to be good in spite of repetitive strain injuries and perceived stress. These personal resources seem to be positively related to their well-being and work engagement, which serves as an argument for including them among other personal resources, often conceptualized in terms of Psychological Capital (PsyCap). The results also showed that the nurses worked actively and intentionally with conditions that could contribute to safeguarding their own health. Conclusion: The results indicated the importance of stimulating the nurses’ area of knowledge about caring for themselves in order to enable them to maintain good physical and mental health. A focus on self-care should be part of the agenda as early as during nursing education.展开更多
Exploring economical,high-efficiency and durable electrocatalysts for the oxygen evolution reaction(OER)is of critical importance for the advancement of sustainable energy conversion technologies,including water elect...Exploring economical,high-efficiency and durable electrocatalysts for the oxygen evolution reaction(OER)is of critical importance for the advancement of sustainable energy conversion technologies,including water electrolysis and metal–air batteries.Compositional manipulation via heteroatom-doping and nanoarchitectural design of Earth-abundant electrocatalysts are extensively established as valid strategies to effectively optimize the electrocatalytic performance due to the electronic modulation and geometric effect.展开更多
Learning from the wisdom and insights of others remains one of the most effective paths to progress.This is the driving force behind our commitment to experience sharing.The March/April issue features three renowned i...Learning from the wisdom and insights of others remains one of the most effective paths to progress.This is the driving force behind our commitment to experience sharing.The March/April issue features three renowned international standardization experts who share their journeys,the strategic"hows and whys"of global participation,and the critical role of stakeholder engagement in shaping the future of the industry.展开更多
Introduction:The choice is no longer whether—but when and how!Today,organizations can no longer choose whether or not to engage with stakeholders;the only real decision is when and how to do it successfully.Engaging ...Introduction:The choice is no longer whether—but when and how!Today,organizations can no longer choose whether or not to engage with stakeholders;the only real decision is when and how to do it successfully.Engaging stakeholders is essential for any type of organization,public,private,or civil society.In fact,it is a fundamental part of effective governance,continuous improvement,and social responsibility.The principle behind stakeholder engagement is simple yet powerful:those who can influence or be affected by an organization's mission must be given the opportunity to express their views and contribute to shaping the decisions that impact them.展开更多
When Sir Keir Starmer arrived in Beijing in late January,Britain marked its first prime-ministerial visit to China in eight years.The symbolism was unavoidable.Yet symbolism was not the point.The visit was about recal...When Sir Keir Starmer arrived in Beijing in late January,Britain marked its first prime-ministerial visit to China in eight years.The symbolism was unavoidable.Yet symbolism was not the point.The visit was about recalibrating economic engagement——carefully,and with numbers firmly in hand.展开更多
Land degradation,coupled with climate change impacts,poses serious threats to global land health and human well-being.Participatory scenario planning(PSP)has become a key tool for exploring these interconnected challe...Land degradation,coupled with climate change impacts,poses serious threats to global land health and human well-being.Participatory scenario planning(PSP)has become a key tool for exploring these interconnected challenges;however,its progress and effectiveness remain underexplored.This study reviews 46 papers,using PRISMA guidelines,to investigate how PSP supports sustainable land management and climate resilience.We document how PSP applications have evolved from a biophysical focus to one addressing broader environmental,societal,and economic challenges.Disparities in how participants engage across PSP phases document the need for more equitable and meaningful participation.Clustering future scenarios reveals the complex interconnections among ecological,social,and economic factors underpinning land management and climate resilience,underscoring the need for inclusive and integrated strategies.From the emerging trends,we identify opportunities to advance PSP implementation,including early engagement of decision-makers,balanced representation and equitable power dynamics,meaningful participation,cross-disciplinary collaboration,integration of human-nature relationships,and regular revision of future pathways.Overall,our review highlights PSP’s potential to co-create inclusive,equitable scenarios and actionable pathways towards sustainable and resilient land use futures.展开更多
Can a reader,upon reading literary fictions,be moved into social actions or engage in socially meaningful activities?If it is so,then will reading gay-themed,popular fictions mean anything for the LGBTQ issue in conte...Can a reader,upon reading literary fictions,be moved into social actions or engage in socially meaningful activities?If it is so,then will reading gay-themed,popular fictions mean anything for the LGBTQ issue in contemporary China?This article argues that a reader of gay-themed,“Boys Love”(or“BL”for short)novels may be moved into taking some social actions for greater tolerance and acceptance of the LGBTQ community in contemporary China,based on the concept of“engaged spectator”,which is a reconstruct of Adam Smith’s moral-psychological model of“impartial spectator”into an actively reading,socially engaged agent taking affirmative actions to bring about greater social justice.This“engaged spectator”shall have a few steps in its active reading of fictions and engaging in transformative social actions,namely“subjective identification”,“ambience appreciation”,and finally,“social engagement”-the three of which are in a lexical order.This tri-step model is based on a neuropsychological reading of Adam Smith into the reader empathy theory.Furthermore,this model is illustrated with Kirin,a popular BL novel,where the reader may engage in social actions to create a more tolerant environment for the LGBTQ community in contemporary China.The three steps outlined above shall offer us an account of explaining how an active reading experience may lead to a socially transformative result.展开更多
In the era of intelligent media,the interaction between teachers and students in higher education is undergoing a profound transformation.The model has shifted from one-way transmission to multi-agent,two-way collabor...In the era of intelligent media,the interaction between teachers and students in higher education is undergoing a profound transformation.The model has shifted from one-way transmission to multi-agent,two-way collaboration involving“teacher-student-AI(artificial intelligence)”.Interaction depth moves from surface Q&A to deep thought engagement,supported by instant,precise feedback and a blended virtual-physical space.New forms such as data-driven personalized interaction and immersive collaborative learning have emerged.However,this evolution brings significant challenges:over-reliance on technology may weaken cognitive autonomy;virtual interaction risks emotional detachment and trust erosion;ethical concerns like algorithmic bias and data privacy arise;teachers’roles become blurred;and evaluation systems lag behind technological advances.Future pathways should position AI as a supportive tool while upholding human centrality.Strengthening emotional connection through online-offline blending,reforming assessment to value process and growth,and empowering teachers as digitally literate“learning guides”and“emotional connectors”are key to building a healthy,sustainable interactive ecosystem.展开更多
The dynamic characteristics of the track system can directly affect its service performance and failure process.To explore the load characteristics and dynamic response of the track system under the dynamic loads from...The dynamic characteristics of the track system can directly affect its service performance and failure process.To explore the load characteristics and dynamic response of the track system under the dynamic loads from the rack vehicle in traction conditions,a systematic test of the track subsystem was carried out on a large-slope test line.In the test,the bending stress of the rack teeth,the wheel-rail forces,and the acceleration of crucial components in the track system were measured.Subsequently,a detailed analysis was conducted on the tested signals of the rack railway track system in the time domain and the time-frequency domains.The test results indicate that the traction force significantly affects the rack tooth bending stress and the wheel-rail forces.The vibrations of the track system under the traction conditions are mainly caused by the impacts generated from the gear-rack engagement,which are then transferred to the sleepers,the rails,and the ballast beds.Furthermore,both the maximum stress on the racks and the wheel-rail forces measured on the rails remain below their allowable values.This experimental study evaluates the load characteristics and reveals the vibration characteristics of the rack railway track system under the vehicle’s ultimate load,which is very important for the load-strengthening design of the key components such as racks and the vibration and noise reduction of the track system.展开更多
1.Introduction Speaking with an audience as a scientific expert should not be intimidating.I have done more than my share in a variety of roles,so Professors Zhigang Peng(Georgia Tech)and Xiaodong Song(Peking Universi...1.Introduction Speaking with an audience as a scientific expert should not be intimidating.I have done more than my share in a variety of roles,so Professors Zhigang Peng(Georgia Tech)and Xiaodong Song(Peking University)asked me to review pertinent lessons.展开更多
Introduction:From rules to participation Today,standardization is no longer just about unifying technical terms or setting measurements.It has become a strategic tool to build trust,strengthen competitiveness,and driv...Introduction:From rules to participation Today,standardization is no longer just about unifying technical terms or setting measurements.It has become a strategic tool to build trust,strengthen competitiveness,and drive sustainable economic growth.As industries grow more complex and new technologies and regulations emerge,it is more important than ever to involve all key players:manufacturers,suppliers,consumers,academics,and regulators.Their shared knowledge and input help shape the standards and policies that guide markets,protect consumers,and ensure product quality and safety.展开更多
The 15th Five-Year Plan will begin in 2026,amid heightened global technological competition and rapid supply chain changes.At this pivotal moment,the low-altitude economy and commercial aerospace,once seen as futurist...The 15th Five-Year Plan will begin in 2026,amid heightened global technological competition and rapid supply chain changes.At this pivotal moment,the low-altitude economy and commercial aerospace,once seen as futuristic,are quickly transitioning from strategic concepts to large-scale manufacturing industries.These sectors now drive China’s high-quality development and support a new framework for international engagement.展开更多
British Prime Minister Keir Starmer’s China visit has yielded a new commitment to a long-term stable comprehensive strategic partnership,with significant breakthroughs in financial cooperation including a newly estab...British Prime Minister Keir Starmer’s China visit has yielded a new commitment to a long-term stable comprehensive strategic partnership,with significant breakthroughs in financial cooperation including a newly established financial working group.THE four-day visit of British Prime Minister Keir Starmer to China-the first by a U.K.Prime Minister in eight years-has marked a significant step toward stabilizing and deepening bilateral relations.展开更多
文摘A cross-sectional survey of 489 male subjects in the age group 15 to 65 years engageddirectly or indirectly in mango cultivation along with 208 control subjects was carried out to find their socio-economic, environmental and health conditions. The conditions like high illiteracy rate (49.5%), poverty (PCI less than Rs 100 per month, 52.2%), poor housing (mud houses, 66.7%) unsafe water supply (78.6%) were prevailing in the surveyed population. The high respiratory morbidity may be attributed to high prevalence of smoking andprolonged inhalation of organic dusts during farming operation associated with illiteracyand poor socio-economic status. Gastrointestinal disorders were related to poor hygienic conditions, smoking and consumption of contaminated water. The symptoms pertaining to CNS, skin and eyes were found to be associated with exposure to pesticides
文摘The paper is actually a literary research on （re）constructing cultural image of post-yugoslavian society, formed through literary sources, i.e., poetry. Using examples of award-winning young authors--Bojan Krivokapic, Mirko Bozic, and Sima Majic, different types of so-called engaged poetry are indicated. This kind of poetry is used to subtly, critically, or in a very subversive way relate to the existing world, but also a new postmodern identity is formed through specific and carefully chosen poetic lexis, deprived of any kind of structure or limitation. The poetry of mentioned authors is used as a provisory example in order to indicate that post-war period （as well as postmodern time） changes the perception of identity, from nationally and politically oriented structure to individual and subversive, conventions-free comprehension of Oneself. Although the three authors are very different in style and expression, what brings them together is tendency to escape conventional and traditional cultural images in order to emphasize the importance of Being Different, but Equally Rightful.
文摘This study explores the phenomenon of human hoping and its role as one addressed times of deep suffering. Vaclav Havel＇s writing on ＂deep hope＂ and Maurice Merleau-Ponty＇s classic work on embodiment were seen as points of intersection with Engaged Buddhist teachings. In-depth interviews with two Engaged Buddhists supported the premise of this paper： Deep or embodied hope is quite different from ordinary wishing or ＂hoping＂ and plays a positive role as one moved through their suffering process.
文摘Prof. Yang Fujia, a nuclearphysicist and educator, hasbeen elected as the Chancel-lor of the University of Nottingham,in the U.K. the first Chinese scholarto hold such a position in a Britishacademic institution, according tothe University’s public affairs office. "I feel privileged," said Prof.Yang. "And it is also an honor
文摘Objective: The purpose of this study is to examine the relationship between job characteristics (job autonomy,job feedback,skill variety,task identity,task significance) and work engagement of nurses in Malaysia.Methods: A survey using self-administered questionnaires was used to collect data from a sample of 856 staff nurses working in eight public hospitals in Malaysia.A shortened nine-item version of the Utrecht Work Engagement Scale(UWES-9) was used to measure work engagement.The UWES-9 comprises three dimensions,which was measured with three items each: vigor,dedication,and absorption.Job characteristics (job autonomy,job feedback,skill variety,task identity,task significance) were measured with the corresponding subscales of the Job Diagnostic Survey.Each subscale consisted of three items.Hypotheses were tested using hierarchical regression analysis.Results: Findings indicated that all the five demographic variables (age,marital status,education,organizational tenure,job tenure) were unrelated to work engagement.The results further revealed that job autonomy (β=0.19,P < 0.01),job feedback (β=0.10,P < 0.01),task identity (β=0.13,P < 0.01),and task significance (β=0.08,P< 0.05) were positively related to work engagement.Skill variety (β=0.03,P> 0.05),however,did not affect work engagement.Conclusion: Job autonomy,job feedback,task identity,and task significance are important factors in predicting work engagement.The findings of this study highlighted the need to incorporate these core dimensions in nursing management to foster work engagement.
文摘Background: Based on the experience of hospital nurses, the aim of this study is to explore the phenomenon of how work-engaged nurses stay healthy in relationally demanding jobs involving very sick and/or dying patients. Method: In-depth interviews were conducted with ten work-engaged nurses employed at the main hospital in one region in Norway. The interviews were interpreted using the Interpretative Phenomenological Analysis method (IPA). Results: The results indicate the importance of using the personal resources: authenticity and a sense of humour for staying healthy. The nurses’ authenticity, in the sense of having a strong sense of ownership towards their personal life experiences, and a sense of having a meaningful life in line with their own values and interests, was an important element when they considered their own health to be good in spite of repetitive strain injuries and perceived stress. These personal resources seem to be positively related to their well-being and work engagement, which serves as an argument for including them among other personal resources, often conceptualized in terms of Psychological Capital (PsyCap). The results also showed that the nurses worked actively and intentionally with conditions that could contribute to safeguarding their own health. Conclusion: The results indicated the importance of stimulating the nurses’ area of knowledge about caring for themselves in order to enable them to maintain good physical and mental health. A focus on self-care should be part of the agenda as early as during nursing education.
基金financially supported by the National Natural Science Foundation of China(21972068)the High-level Talents Project of Jinling Institute of Technology(jit-b-202164)the Nantong University Scientific Research Foundation for the Introduced Talents(No.03081220).
文摘Exploring economical,high-efficiency and durable electrocatalysts for the oxygen evolution reaction(OER)is of critical importance for the advancement of sustainable energy conversion technologies,including water electrolysis and metal–air batteries.Compositional manipulation via heteroatom-doping and nanoarchitectural design of Earth-abundant electrocatalysts are extensively established as valid strategies to effectively optimize the electrocatalytic performance due to the electronic modulation and geometric effect.
文摘Learning from the wisdom and insights of others remains one of the most effective paths to progress.This is the driving force behind our commitment to experience sharing.The March/April issue features three renowned international standardization experts who share their journeys,the strategic"hows and whys"of global participation,and the critical role of stakeholder engagement in shaping the future of the industry.
文摘Introduction:The choice is no longer whether—but when and how!Today,organizations can no longer choose whether or not to engage with stakeholders;the only real decision is when and how to do it successfully.Engaging stakeholders is essential for any type of organization,public,private,or civil society.In fact,it is a fundamental part of effective governance,continuous improvement,and social responsibility.The principle behind stakeholder engagement is simple yet powerful:those who can influence or be affected by an organization's mission must be given the opportunity to express their views and contribute to shaping the decisions that impact them.
文摘When Sir Keir Starmer arrived in Beijing in late January,Britain marked its first prime-ministerial visit to China in eight years.The symbolism was unavoidable.Yet symbolism was not the point.The visit was about recalibrating economic engagement——carefully,and with numbers firmly in hand.
基金supported by the Royal Thai Government Scholarship in Science and Technologythe Faculty of Environment and Resource Studies, Mahidol University, Thailand (FERS, Mahidol University)
文摘Land degradation,coupled with climate change impacts,poses serious threats to global land health and human well-being.Participatory scenario planning(PSP)has become a key tool for exploring these interconnected challenges;however,its progress and effectiveness remain underexplored.This study reviews 46 papers,using PRISMA guidelines,to investigate how PSP supports sustainable land management and climate resilience.We document how PSP applications have evolved from a biophysical focus to one addressing broader environmental,societal,and economic challenges.Disparities in how participants engage across PSP phases document the need for more equitable and meaningful participation.Clustering future scenarios reveals the complex interconnections among ecological,social,and economic factors underpinning land management and climate resilience,underscoring the need for inclusive and integrated strategies.From the emerging trends,we identify opportunities to advance PSP implementation,including early engagement of decision-makers,balanced representation and equitable power dynamics,meaningful participation,cross-disciplinary collaboration,integration of human-nature relationships,and regular revision of future pathways.Overall,our review highlights PSP’s potential to co-create inclusive,equitable scenarios and actionable pathways towards sustainable and resilient land use futures.
文摘Can a reader,upon reading literary fictions,be moved into social actions or engage in socially meaningful activities?If it is so,then will reading gay-themed,popular fictions mean anything for the LGBTQ issue in contemporary China?This article argues that a reader of gay-themed,“Boys Love”(or“BL”for short)novels may be moved into taking some social actions for greater tolerance and acceptance of the LGBTQ community in contemporary China,based on the concept of“engaged spectator”,which is a reconstruct of Adam Smith’s moral-psychological model of“impartial spectator”into an actively reading,socially engaged agent taking affirmative actions to bring about greater social justice.This“engaged spectator”shall have a few steps in its active reading of fictions and engaging in transformative social actions,namely“subjective identification”,“ambience appreciation”,and finally,“social engagement”-the three of which are in a lexical order.This tri-step model is based on a neuropsychological reading of Adam Smith into the reader empathy theory.Furthermore,this model is illustrated with Kirin,a popular BL novel,where the reader may engage in social actions to create a more tolerant environment for the LGBTQ community in contemporary China.The three steps outlined above shall offer us an account of explaining how an active reading experience may lead to a socially transformative result.
文摘In the era of intelligent media,the interaction between teachers and students in higher education is undergoing a profound transformation.The model has shifted from one-way transmission to multi-agent,two-way collaboration involving“teacher-student-AI(artificial intelligence)”.Interaction depth moves from surface Q&A to deep thought engagement,supported by instant,precise feedback and a blended virtual-physical space.New forms such as data-driven personalized interaction and immersive collaborative learning have emerged.However,this evolution brings significant challenges:over-reliance on technology may weaken cognitive autonomy;virtual interaction risks emotional detachment and trust erosion;ethical concerns like algorithmic bias and data privacy arise;teachers’roles become blurred;and evaluation systems lag behind technological advances.Future pathways should position AI as a supportive tool while upholding human centrality.Strengthening emotional connection through online-offline blending,reforming assessment to value process and growth,and empowering teachers as digitally literate“learning guides”and“emotional connectors”are key to building a healthy,sustainable interactive ecosystem.
基金supported by the National Natural Science Foundation of China(No.52388102)the Sichuan Science and Technology Program(No.2024NSFTD0011)the Fundamental Research Funds for the State Key Laboratory of Rail Transit Vehicle System of Southwest Jiaotong University(No.2023TPL-T11).
文摘The dynamic characteristics of the track system can directly affect its service performance and failure process.To explore the load characteristics and dynamic response of the track system under the dynamic loads from the rack vehicle in traction conditions,a systematic test of the track subsystem was carried out on a large-slope test line.In the test,the bending stress of the rack teeth,the wheel-rail forces,and the acceleration of crucial components in the track system were measured.Subsequently,a detailed analysis was conducted on the tested signals of the rack railway track system in the time domain and the time-frequency domains.The test results indicate that the traction force significantly affects the rack tooth bending stress and the wheel-rail forces.The vibrations of the track system under the traction conditions are mainly caused by the impacts generated from the gear-rack engagement,which are then transferred to the sleepers,the rails,and the ballast beds.Furthermore,both the maximum stress on the racks and the wheel-rail forces measured on the rails remain below their allowable values.This experimental study evaluates the load characteristics and reveals the vibration characteristics of the rack railway track system under the vehicle’s ultimate load,which is very important for the load-strengthening design of the key components such as racks and the vibration and noise reduction of the track system.
基金Support was provided by NSF(grant No.EAR-2041892)
文摘1.Introduction Speaking with an audience as a scientific expert should not be intimidating.I have done more than my share in a variety of roles,so Professors Zhigang Peng(Georgia Tech)and Xiaodong Song(Peking University)asked me to review pertinent lessons.
文摘Introduction:From rules to participation Today,standardization is no longer just about unifying technical terms or setting measurements.It has become a strategic tool to build trust,strengthen competitiveness,and drive sustainable economic growth.As industries grow more complex and new technologies and regulations emerge,it is more important than ever to involve all key players:manufacturers,suppliers,consumers,academics,and regulators.Their shared knowledge and input help shape the standards and policies that guide markets,protect consumers,and ensure product quality and safety.
文摘The 15th Five-Year Plan will begin in 2026,amid heightened global technological competition and rapid supply chain changes.At this pivotal moment,the low-altitude economy and commercial aerospace,once seen as futuristic,are quickly transitioning from strategic concepts to large-scale manufacturing industries.These sectors now drive China’s high-quality development and support a new framework for international engagement.
文摘British Prime Minister Keir Starmer’s China visit has yielded a new commitment to a long-term stable comprehensive strategic partnership,with significant breakthroughs in financial cooperation including a newly established financial working group.THE four-day visit of British Prime Minister Keir Starmer to China-the first by a U.K.Prime Minister in eight years-has marked a significant step toward stabilizing and deepening bilateral relations.
