In this paper,the feasibility of a high laser damage threshold liquid crystal spatial light modulator based on gallium nitride(GaN)transparent conductive electrodes is proved.The laser-induced damage threshold(LIDT)is...In this paper,the feasibility of a high laser damage threshold liquid crystal spatial light modulator based on gallium nitride(GaN)transparent conductive electrodes is proved.The laser-induced damage threshold(LIDT)is measured,and a high LIDT reflective optically addressed liquid crystal light valve(OALCLV)based on GaN is designed and fabricated.The proper work mode of the OALCLV is determined;the OALCLV obtained a maximum reflectivity of about 55%and an on–off ratio of 55:1,and an image response is demonstrated.展开更多
In this paper,we propose an effective method to compensate for the performance degradation of optically addressed spatial light modulators(OASLMs).The thermal deposition problem usually leads to the on-off ratio reduc...In this paper,we propose an effective method to compensate for the performance degradation of optically addressed spatial light modulators(OASLMs).The thermal deposition problem usually leads to the on-off ratio reduction of amplitude OASLM,so it is difficult to achieve better results in high-power laser systems.Through the analysis of the laser-induced temperature rise model and the liquid crystal layer voltage model,it is found that reducing the driving voltage of the liquid crystal light valve and increasing the driving current of the optical writing module can compensate for the decrease of on-off ratio caused by temperature rise.This is the result of effectively utilizing the photoconductive effect of Bi_(12)SiO_(20)(BSO)crystal.The experimental results verify the feasibility of the proposed method and increase the laser withstand power of amplitude-only OASLM by about a factor of 2.5.展开更多
China President Xi Jin-ping met with Dr. Margaret Chan, Director-General of the World Health Organization （WHO）, at the Great Hall of the People in Beijing, capital of China, Aug. 20, 2013. XI Jin-ping said that Chi...China President Xi Jin-ping met with Dr. Margaret Chan, Director-General of the World Health Organization （WHO）, at the Great Hall of the People in Beijing, capital of China, Aug. 20, 2013. XI Jin-ping said that China will continue to improve public health and enhance cooperation with the WHO. The Chinese government always prioritizes its people＇s health and will make unremitting efforts to further implement reform of its public health system, Xi said. He promised that the Chinese government would continue to effectively distribute public health and medical resources in order to achieve full coverage of basic health services to all Chinese people by 2020.展开更多
The year 2025 marks both the 25th anniversary of the Forum on China-Africa Cooperation(FOCAC)and the first year of implementation of the outcomes of the 2024 FOCAC Beijing Summit.Throughout the year,China has supporte...The year 2025 marks both the 25th anniversary of the Forum on China-Africa Cooperation(FOCAC)and the first year of implementation of the outcomes of the 2024 FOCAC Beijing Summit.Throughout the year,China has supported Africa in addressing historical injustices at diplomatic and political levels and firmly backed South Africa in hosting the G20 Leaders’Summit,further deepening China-Africa strategic mutual trust.展开更多
This study explores the variations in address forms within the Tinghu dialect of Yancheng city.The findings reveal that the ways individuals address one another in this region deviate from the established principles o...This study explores the variations in address forms within the Tinghu dialect of Yancheng city.The findings reveal that the ways individuals address one another in this region deviate from the established principles of tone sandhi theory.In Chinese phonology,it is generally assumed that individual characters serve as fundamental forms based on their standard pronunciations,with real-time pronunciations adapting to phonetic conditions.However,the study of address forms has not traditionally been integrated into this framework.Observations indicate that a wide range of addressing methods is employed in social interactions,reflecting the complexity of regional cultural traits and social dynamics.This research highlights the distinctive features of address forms in the Tinghu dialect,particularly in terms of tone sandhi,vocative expressions,and indirect address.By examining these unique characteristics,the study enhances our understanding of the principles governing tonal changes in Chinese.Furthermore,it offers valuable insights into the preservation and inheritance of regional dialects.展开更多
Archroma,a global leader in specialty chemicals fo-cused on sustainable solutions,has supported the Institute of ChemicalTechnology(ICT),Mumbai,lndia in the renova-tion and development of a sustainable laboratory faci...Archroma,a global leader in specialty chemicals fo-cused on sustainable solutions,has supported the Institute of ChemicalTechnology(ICT),Mumbai,lndia in the renova-tion and development of a sustainable laboratory facility as part of its Corporate Social Responsibility(CSR)program.The upgraded facility will strengthen the department's capacity to conduct fundamental research and develop future-oriented technologies in textile processing,manufac-turing,and effluent treatment.It is designed to help address current industrial challenges while encouraging innovation in sustainable and resource-efficient textile technologies.展开更多
The blue economy encompasses all economic activities related to oceans,seas,and coastal resources,emphasizing sustainable development that balances ecological health with economic growth.It includes sectors such as fi...The blue economy encompasses all economic activities related to oceans,seas,and coastal resources,emphasizing sustainable development that balances ecological health with economic growth.It includes sectors such as fisheries,maritime trade,coastal tourism,renewable energy,and marine biotechnology.For China and ASEAN,the blue economy represents not only a source of substantial economic potential but also a crucial domain for addressing shared challenges such as resource sustainability,ecological conservation,and climate resilience.展开更多
The increasing reliance on interconnected Internet of Things(IoT)devices has amplified the demand for robust anonymization strategies to protect device identities and ensure secure communication.However,traditional an...The increasing reliance on interconnected Internet of Things(IoT)devices has amplified the demand for robust anonymization strategies to protect device identities and ensure secure communication.However,traditional anonymization methods for IoT networks often rely on static identity models,making them vulnerable to inference attacks through long-term observation.Moreover,these methods tend to sacrifice data availability to protect privacy,limiting their practicality in real-world applications.To overcome these limitations,we propose a dynamic device identity anonymization framework using Moving Target Defense(MTD)principles implemented via Software-Defined Networking(SDN).In our model,the SDN controller periodically reconfigures the network addresses and routes of IoT devices using a constraint-aware backtracking algorithmthat constructs new virtual topologies under connectivity and performance constraints.This address-hopping scheme introduces continuous unpredictability at the network layer dynamically changing device identifiers,routing paths,and even network topology which thwarts attacker reconnaissance while preserving normal communication.Experimental results demonstrate that our approach significantly reduces device identity exposure and scan success rates for attackers compared to static networks.Moreover,the dynamic schememaintains high data availability and network performance.Under attack conditions it reduced average communication delay by approximately 60% vs.an unprotected network,with minimal overhead on system resources.展开更多
Human knowledge of viruses has experienced explosive growth in the 21st century.This leap forward is reflected not only in the deepening of basic research on viruses but also in addressing public health challenges pos...Human knowledge of viruses has experienced explosive growth in the 21st century.This leap forward is reflected not only in the deepening of basic research on viruses but also in addressing public health challenges posed by viral diseases.Key advancements include the rapid identification of emerging viruses and variants,the revelation of diverse viromes and evolutionary patterns,the elucidation of viral pathogenesis-and antiviral targets,as well as development of novel vaccines and antiviral drugs through far more advanced techniques and pipelines(Holmes et al.,2024).Altogether,these breakthroughs are reshaping our understanding of viruses and our strategies to combat viral infections at an unprecedented pace.展开更多
BACKGROUND Heart failure with preserved ejection fraction(HFpEF)following acute myocardial infarction(AMI)carries substantial morbidity and mortality,yet reliable prognostic markers beyond conventional cardiovascular ...BACKGROUND Heart failure with preserved ejection fraction(HFpEF)following acute myocardial infarction(AMI)carries substantial morbidity and mortality,yet reliable prognostic markers beyond conventional cardiovascular factors remain limited.Frailty,reflecting diminished physiological reserve,has emerged as a potential determinant of adverse outcomes in this high-risk population.Therefore,the aim of this study was to address a critical knowledge gap and to provide evidence that may guide frailty-adapted management strategies to improve prognosis and quality of life in this high-risk population.METHODS We conducted a multicenter retrospective cohort study including 4507 patients with HFpEF discharged after AMI across 82 hospitals in China(from January 2010 to March 2024).Frailty was assessed using the Hospital Frailty Risk Score(HFRS),with HFRS<5 defined as non-frail and HFRS≥5 as frail.Multivariable Cox proportional hazards models,adjusted for demographics,comorbidities,left ventricular ejection fraction,and therapies,were applied to evaluate associations between frailty and clinical outcomes.The primary endpoints were all-cause death and major adverse cardiovascular events(MACE),which defined as the composite of cardiovascular death and heart failure rehospitalization.Secondary endpoints included net adverse clinical events(NACE),which defined as the composite of all-cause death,stroke,recurrent myocardial infarction,revascularization,and major bleeding,as well as the individual components of MACE.RESULTS Frailty was independently associated with a higher risk of all-cause death[adjusted hazard ratio(aHR)=1.52,95%CI:1.31–2.03,P=0.005]and NACE(aHR=1.20,95%CI:1.02–1.41,P=0.026).At one year,frail patients had higher unadjusted rates of all-cause death(9.0%vs.2.9%)and NACE(19.8%vs.13.7%)compared with non-frail patients.For cardiovascular death,the association did not reach statistical significance(aHR=1.42,95%CI:0.99–2.03,P=0.053).No significant associations were found for MACE(aHR=1.05,95%CI:0.86–1.28,P=0.636)or heart failure rehospitalization(aHR=0.94,95%CI:0.75–1.19,P=0.616).CONCLUSIONS Frailty,as measured by the HFRS,is an independent predictor of one-year mortality and composite adverse events in post-AMI HFpEF patients.These findings support the use of HFRS at discharge to identify high-risk population who may benefit from closer follow-up,optimization of medical therapy,and targeted frailty-focused interventions.展开更多
1 The 2025 FIRST Robotics Competition(FRC)Shanghai Regional has returned to the city,inspiring youth in science and technology.The three⁃day event,starting from March 14,has brought together nearly 1,000 young competi...1 The 2025 FIRST Robotics Competition(FRC)Shanghai Regional has returned to the city,inspiring youth in science and technology.The three⁃day event,starting from March 14,has brought together nearly 1,000 young competitors from 43 teams—including three international teams.Held at East China Normal University,the event centered on this year's theme“Reefscape”,challenging participants to address environmental issues through robotics.Teams have to design and program robots to transplant artificial coral and collect simulated algae(模拟藻类),simulating marine ecosystems'restoration processes.展开更多
The 9th International Mediation Summit Held in Haikou On December 3,the 9th International Mediation Summit was held in Haikou,Hainan Province.Nie Wenhui, Vice Chairman of the China Council for the Promotion of Interna...The 9th International Mediation Summit Held in Haikou On December 3,the 9th International Mediation Summit was held in Haikou,Hainan Province.Nie Wenhui, Vice Chairman of the China Council for the Promotion of International Trade (CCPIT),attended the Summit and delivered an opening speech and a keynote address.展开更多
As a typical in-memory computing hardware design, nonvolatile ternary content-addressable memories(TCAMs) enable the logic operation and data storage for high throughout in parallel big data processing. However,TCAM c...As a typical in-memory computing hardware design, nonvolatile ternary content-addressable memories(TCAMs) enable the logic operation and data storage for high throughout in parallel big data processing. However,TCAM cells based on conventional silicon-based devices suffer from structural complexity and large footprintlimitations. Here, we demonstrate an ultrafast nonvolatile TCAM cell based on the MoTe2/hBN/multilayergraphene (MLG) van der Waals heterostructure using a top-gated partial floating-gate field-effect transistor(PFGFET) architecture. Based on its ambipolar transport properties, the carrier type in the source/drain andcentral channel regions of the MoTe2 channel can be efficiently tuned by the control gate and top gate, respectively,enabling the reconfigurable operation of the device in either memory or FET mode. When working inthe memory mode, it achieves an ultrafast 60 ns programming/erase speed with a current on-off ratio of ∼105,excellent retention capability, and robust endurance. When serving as a reconfigurable transistor, unipolar p-typeand n-type FETs are obtained by adopting ultrafast 60 ns control-gate voltage pulses with different polarities.The monolithic integration of memory and logic within a single device enables the content-addressable memory(CAM) functionality. Finally, by integrating two PFGFETs in parallel, a TCAM cell with a high current ratioof ∼10^(5) between the match and mismatch states is achieved without requiring additional peripheral circuitry.These results provide a promising route for the design of high-performance TCAM devices for future in-memorycomputing applications.展开更多
在分析现有P2P(peer to peer)路由算法的基础上,提出了一种基于二阶矩定位、支持多维资源数据描述的高效资源路由算法——FAN(flabellate addressable network)路由算法.FAN算法将节点映射到统一的多维笛卡尔空间,并以节点相对空间原点...在分析现有P2P(peer to peer)路由算法的基础上,提出了一种基于二阶矩定位、支持多维资源数据描述的高效资源路由算法——FAN(flabellate addressable network)路由算法.FAN算法将节点映射到统一的多维笛卡尔空间,并以节点相对空间原点的二阶矩作为子空间管理和资源搜索的依据.FAN路由算法具有O(log(N/k))的高路由效率,在节点加入和退出FAN网络时,更新路由信息的代价为O(klog(N/k)).实验结果表明,FAN路由算法具有路由效率高、维护代价小的优点,是一种P2P环境中支持多维资源数据描述的高效结构化资源路由算法.而且,目前部分基于CAN(content-addressable network)网络的改进算法也可以在FAN网络中适用,并获得更好的路由效率和更低的维护代价.展开更多
Once in the hands of end users, such durable equipment as spacecraft, aircraft, ships,automobiles, computers, etc. are in a state of debugging, working or storage. In either state, availability, reliability and super-...Once in the hands of end users, such durable equipment as spacecraft, aircraft, ships,automobiles, computers, etc. are in a state of debugging, working or storage. In either state, availability, reliability and super-efficiency are the ultimate goals, which have been achieved through constant monitoring as well as regular, preventive, routine and corrective maintenance. Although some advanced instruments can visualize certain invisible malfunctioning phenomena into visible ones, deeply hidden troubles cannot be found unless monitoring and testing data are addressed using tools that process the data statistically, analytically and mathematically. Some state-of-theart trouble-shooting and life-predicting techniques and approaches are introduced in this paper.展开更多
基金supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA25020303)。
文摘In this paper,the feasibility of a high laser damage threshold liquid crystal spatial light modulator based on gallium nitride(GaN)transparent conductive electrodes is proved.The laser-induced damage threshold(LIDT)is measured,and a high LIDT reflective optically addressed liquid crystal light valve(OALCLV)based on GaN is designed and fabricated.The proper work mode of the OALCLV is determined;the OALCLV obtained a maximum reflectivity of about 55%and an on–off ratio of 55:1,and an image response is demonstrated.
基金supported by the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDA25020303)the financial support of the Self Deployed Projects of Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences.
文摘In this paper,we propose an effective method to compensate for the performance degradation of optically addressed spatial light modulators(OASLMs).The thermal deposition problem usually leads to the on-off ratio reduction of amplitude OASLM,so it is difficult to achieve better results in high-power laser systems.Through the analysis of the laser-induced temperature rise model and the liquid crystal layer voltage model,it is found that reducing the driving voltage of the liquid crystal light valve and increasing the driving current of the optical writing module can compensate for the decrease of on-off ratio caused by temperature rise.This is the result of effectively utilizing the photoconductive effect of Bi_(12)SiO_(20)(BSO)crystal.The experimental results verify the feasibility of the proposed method and increase the laser withstand power of amplitude-only OASLM by about a factor of 2.5.
文摘China President Xi Jin-ping met with Dr. Margaret Chan, Director-General of the World Health Organization （WHO）, at the Great Hall of the People in Beijing, capital of China, Aug. 20, 2013. XI Jin-ping said that China will continue to improve public health and enhance cooperation with the WHO. The Chinese government always prioritizes its people＇s health and will make unremitting efforts to further implement reform of its public health system, Xi said. He promised that the Chinese government would continue to effectively distribute public health and medical resources in order to achieve full coverage of basic health services to all Chinese people by 2020.
文摘The year 2025 marks both the 25th anniversary of the Forum on China-Africa Cooperation(FOCAC)and the first year of implementation of the outcomes of the 2024 FOCAC Beijing Summit.Throughout the year,China has supported Africa in addressing historical injustices at diplomatic and political levels and firmly backed South Africa in hosting the G20 Leaders’Summit,further deepening China-Africa strategic mutual trust.
文摘This study explores the variations in address forms within the Tinghu dialect of Yancheng city.The findings reveal that the ways individuals address one another in this region deviate from the established principles of tone sandhi theory.In Chinese phonology,it is generally assumed that individual characters serve as fundamental forms based on their standard pronunciations,with real-time pronunciations adapting to phonetic conditions.However,the study of address forms has not traditionally been integrated into this framework.Observations indicate that a wide range of addressing methods is employed in social interactions,reflecting the complexity of regional cultural traits and social dynamics.This research highlights the distinctive features of address forms in the Tinghu dialect,particularly in terms of tone sandhi,vocative expressions,and indirect address.By examining these unique characteristics,the study enhances our understanding of the principles governing tonal changes in Chinese.Furthermore,it offers valuable insights into the preservation and inheritance of regional dialects.
文摘Archroma,a global leader in specialty chemicals fo-cused on sustainable solutions,has supported the Institute of ChemicalTechnology(ICT),Mumbai,lndia in the renova-tion and development of a sustainable laboratory facility as part of its Corporate Social Responsibility(CSR)program.The upgraded facility will strengthen the department's capacity to conduct fundamental research and develop future-oriented technologies in textile processing,manufac-turing,and effluent treatment.It is designed to help address current industrial challenges while encouraging innovation in sustainable and resource-efficient textile technologies.
文摘The blue economy encompasses all economic activities related to oceans,seas,and coastal resources,emphasizing sustainable development that balances ecological health with economic growth.It includes sectors such as fisheries,maritime trade,coastal tourism,renewable energy,and marine biotechnology.For China and ASEAN,the blue economy represents not only a source of substantial economic potential but also a crucial domain for addressing shared challenges such as resource sustainability,ecological conservation,and climate resilience.
基金supported by the National Key Research and Development Program of China(Project No.2022YFB3104300).
文摘The increasing reliance on interconnected Internet of Things(IoT)devices has amplified the demand for robust anonymization strategies to protect device identities and ensure secure communication.However,traditional anonymization methods for IoT networks often rely on static identity models,making them vulnerable to inference attacks through long-term observation.Moreover,these methods tend to sacrifice data availability to protect privacy,limiting their practicality in real-world applications.To overcome these limitations,we propose a dynamic device identity anonymization framework using Moving Target Defense(MTD)principles implemented via Software-Defined Networking(SDN).In our model,the SDN controller periodically reconfigures the network addresses and routes of IoT devices using a constraint-aware backtracking algorithmthat constructs new virtual topologies under connectivity and performance constraints.This address-hopping scheme introduces continuous unpredictability at the network layer dynamically changing device identifiers,routing paths,and even network topology which thwarts attacker reconnaissance while preserving normal communication.Experimental results demonstrate that our approach significantly reduces device identity exposure and scan success rates for attackers compared to static networks.Moreover,the dynamic schememaintains high data availability and network performance.Under attack conditions it reduced average communication delay by approximately 60% vs.an unprotected network,with minimal overhead on system resources.
文摘Human knowledge of viruses has experienced explosive growth in the 21st century.This leap forward is reflected not only in the deepening of basic research on viruses but also in addressing public health challenges posed by viral diseases.Key advancements include the rapid identification of emerging viruses and variants,the revelation of diverse viromes and evolutionary patterns,the elucidation of viral pathogenesis-and antiviral targets,as well as development of novel vaccines and antiviral drugs through far more advanced techniques and pipelines(Holmes et al.,2024).Altogether,these breakthroughs are reshaping our understanding of viruses and our strategies to combat viral infections at an unprecedented pace.
基金supported by the Tianjin Key Medical Discipline(Specialty)Construction Project(TJYXZDXK-029A)the Key Project of Tianjin Natural Science Foundation(21JCZDJC01080)the Tianjin Fourth Central Hospital Outstanding Young Talent Fund(tjdszxyy20230008).
文摘BACKGROUND Heart failure with preserved ejection fraction(HFpEF)following acute myocardial infarction(AMI)carries substantial morbidity and mortality,yet reliable prognostic markers beyond conventional cardiovascular factors remain limited.Frailty,reflecting diminished physiological reserve,has emerged as a potential determinant of adverse outcomes in this high-risk population.Therefore,the aim of this study was to address a critical knowledge gap and to provide evidence that may guide frailty-adapted management strategies to improve prognosis and quality of life in this high-risk population.METHODS We conducted a multicenter retrospective cohort study including 4507 patients with HFpEF discharged after AMI across 82 hospitals in China(from January 2010 to March 2024).Frailty was assessed using the Hospital Frailty Risk Score(HFRS),with HFRS<5 defined as non-frail and HFRS≥5 as frail.Multivariable Cox proportional hazards models,adjusted for demographics,comorbidities,left ventricular ejection fraction,and therapies,were applied to evaluate associations between frailty and clinical outcomes.The primary endpoints were all-cause death and major adverse cardiovascular events(MACE),which defined as the composite of cardiovascular death and heart failure rehospitalization.Secondary endpoints included net adverse clinical events(NACE),which defined as the composite of all-cause death,stroke,recurrent myocardial infarction,revascularization,and major bleeding,as well as the individual components of MACE.RESULTS Frailty was independently associated with a higher risk of all-cause death[adjusted hazard ratio(aHR)=1.52,95%CI:1.31–2.03,P=0.005]and NACE(aHR=1.20,95%CI:1.02–1.41,P=0.026).At one year,frail patients had higher unadjusted rates of all-cause death(9.0%vs.2.9%)and NACE(19.8%vs.13.7%)compared with non-frail patients.For cardiovascular death,the association did not reach statistical significance(aHR=1.42,95%CI:0.99–2.03,P=0.053).No significant associations were found for MACE(aHR=1.05,95%CI:0.86–1.28,P=0.636)or heart failure rehospitalization(aHR=0.94,95%CI:0.75–1.19,P=0.616).CONCLUSIONS Frailty,as measured by the HFRS,is an independent predictor of one-year mortality and composite adverse events in post-AMI HFpEF patients.These findings support the use of HFRS at discharge to identify high-risk population who may benefit from closer follow-up,optimization of medical therapy,and targeted frailty-focused interventions.
文摘1 The 2025 FIRST Robotics Competition(FRC)Shanghai Regional has returned to the city,inspiring youth in science and technology.The three⁃day event,starting from March 14,has brought together nearly 1,000 young competitors from 43 teams—including three international teams.Held at East China Normal University,the event centered on this year's theme“Reefscape”,challenging participants to address environmental issues through robotics.Teams have to design and program robots to transplant artificial coral and collect simulated algae(模拟藻类),simulating marine ecosystems'restoration processes.
文摘The 9th International Mediation Summit Held in Haikou On December 3,the 9th International Mediation Summit was held in Haikou,Hainan Province.Nie Wenhui, Vice Chairman of the China Council for the Promotion of International Trade (CCPIT),attended the Summit and delivered an opening speech and a keynote address.
基金supported by the National Key Research&Development Projects of China(Grant No.2022YFA1204100)National Natural Science Foundation of China(Grant No.62488201)+1 种基金CAS Project for Young Scientists in Basic Research(YSBR-003)the Innovation Program of Quantum Science and Technology(2021ZD0302700)。
文摘As a typical in-memory computing hardware design, nonvolatile ternary content-addressable memories(TCAMs) enable the logic operation and data storage for high throughout in parallel big data processing. However,TCAM cells based on conventional silicon-based devices suffer from structural complexity and large footprintlimitations. Here, we demonstrate an ultrafast nonvolatile TCAM cell based on the MoTe2/hBN/multilayergraphene (MLG) van der Waals heterostructure using a top-gated partial floating-gate field-effect transistor(PFGFET) architecture. Based on its ambipolar transport properties, the carrier type in the source/drain andcentral channel regions of the MoTe2 channel can be efficiently tuned by the control gate and top gate, respectively,enabling the reconfigurable operation of the device in either memory or FET mode. When working inthe memory mode, it achieves an ultrafast 60 ns programming/erase speed with a current on-off ratio of ∼105,excellent retention capability, and robust endurance. When serving as a reconfigurable transistor, unipolar p-typeand n-type FETs are obtained by adopting ultrafast 60 ns control-gate voltage pulses with different polarities.The monolithic integration of memory and logic within a single device enables the content-addressable memory(CAM) functionality. Finally, by integrating two PFGFETs in parallel, a TCAM cell with a high current ratioof ∼10^(5) between the match and mismatch states is achieved without requiring additional peripheral circuitry.These results provide a promising route for the design of high-performance TCAM devices for future in-memorycomputing applications.
基金co-supported by the National Natural Science Fundation for Distinguished Young Scholar of China(No.61025014)the National Natural Science Foundation of China(Nos.61174030,61104223,61374126,61374120,61004069 and 61370031)
文摘Once in the hands of end users, such durable equipment as spacecraft, aircraft, ships,automobiles, computers, etc. are in a state of debugging, working or storage. In either state, availability, reliability and super-efficiency are the ultimate goals, which have been achieved through constant monitoring as well as regular, preventive, routine and corrective maintenance. Although some advanced instruments can visualize certain invisible malfunctioning phenomena into visible ones, deeply hidden troubles cannot be found unless monitoring and testing data are addressed using tools that process the data statistically, analytically and mathematically. Some state-of-theart trouble-shooting and life-predicting techniques and approaches are introduced in this paper.
