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Multiple Usages of Urban Lawn and Problem Analysis
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作者 陈雨峰 梁小红 《Journal of Landscape Research》 2011年第8期13-17,共5页
Based on lawn function theory and urban planning perspectives, functions of urban lawns were analyzed, status and prospect of the multiple usages of lawn were revealed. Urban lawn was concluded as an important part of... Based on lawn function theory and urban planning perspectives, functions of urban lawns were analyzed, status and prospect of the multiple usages of lawn were revealed. Urban lawn was concluded as an important part of modern urban greening, moveover, it has been integrated in people's lives gradually by playing a significant role in people's work, studying, leisure, urban disaster prevention and mitigation. At the same time, problems rise from the multiple usages of lawn were discussed and improvement suggestions were put forward. 展开更多
关键词 URBAN LAWN MULTIPLE usages PROBLEM ANALYSIS
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Analysis of the Influence of New Usages on the State of Conservation of Historical Buildings through Microclimate Characterization
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作者 Mariana Estima Silva Ariela da Silva Torres +1 位作者 Eduardo Grala da Cunha Isabel Tourinho Salamoni 《Journal of Civil Engineering and Architecture》 2017年第2期159-174,共16页
Recycling is an alternative for preserving historical heritage buildings. Through such process, buildings are occupied by new usages that assure they are not abandoned. However, conservation issues, like pathological ... Recycling is an alternative for preserving historical heritage buildings. Through such process, buildings are occupied by new usages that assure they are not abandoned. However, conservation issues, like pathological manifestations by filamentous fungi, are common even in buildings receiving new uses. Thus, it is extremely important to know the microclimate behavior of these buildings and analyze if there are usages that favor the appearance of filamentous fungi or not. This study aims to verify if new usages modify the microclimate in historical buildings and if such possible change favors the appearance of pathological manifestations by filamentous fimgi in some specific use. To achieve the results, three buildings that have gone through recycling processes were chosen in the city of Pelotas, in Southernmost Brazil. The city possesses a large number of buildings with historical value and its climate conditions are propitious for appearance of filamentous fungi. For 12 months, microclimate was monitored, the environments modus operandi was characterized and there was a survey on the pathological manifestations by filamentous fungi in the three buildings with two different uses: administration offices and exhibition rooms. Conclusion was that usages that allow natural ventilation and lighting favor conservation, which is what happens in the ones used as administration offices. Besides that, it was noticed that the construction system also influences, since buildings with a high cellar that is being used did not present filamentous fungi, which also shows the influence of ascending humidity on the appearance of such pathological manifestations. 展开更多
关键词 Historical buildings new usages MICROCLIMATE pathological manifestations.
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ResghostNet:Boosting GhostNet with Residual Connections and Adaptive-SE Blocks
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作者 Yuang Chen Yong Li +2 位作者 Fang Lin Shuhan Lv Jiaze Jiang 《Computers, Materials & Continua》 2026年第2期1524-1541,共18页
Aiming at the problem of potential information noise introduced during the generation of ghost feature maps in GhostNet,this paper proposes a novel lightweight neural network model called ResghostNet.This model constr... Aiming at the problem of potential information noise introduced during the generation of ghost feature maps in GhostNet,this paper proposes a novel lightweight neural network model called ResghostNet.This model constructs the Resghost Module by combining residual connections and Adaptive-SE Blocks,which enhances the quality of generated feature maps through direct propagation of original input information and selection of important channels before cheap operations.Specifically,ResghostNet introduces residual connections on the basis of the Ghost Module to optimize the information flow,and designs a weight self-attention mechanism combined with SE blocks to enhance feature expression capabilities in cheap operations.Experimental results on the ImageNet dataset show that,compared to GhostNet,ResghostNet achieves higher accuracy while reducing the number of parameters by 52%.Although the computational complexity increases,by optimizing the usage strategy of GPU cachememory,themodel’s inference speed becomes faster.The ResghostNet is optimized in terms of classification accuracy and the number of model parameters,and shows great potential in edge computing devices. 展开更多
关键词 Residual connections adaptive-SE blocks lightweight neural network GPU memory usage
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Copyright statement
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作者 Editorial Office of Baosteel Technical Research 《Baosteel Technical Research》 2026年第1期F0003-F0003,共1页
Baosteel Technical Research has been indexed in many databases such as ProQuest CSA,Реферативныйжурнал(VINITI),China National Knowledge Infrastructure(CNKI),Wanfang Data,VIP Information,Airiti Librar... Baosteel Technical Research has been indexed in many databases such as ProQuest CSA,Реферативныйжурнал(VINITI),China National Knowledge Infrastructure(CNKI),Wanfang Data,VIP Information,Airiti Library,and Superstar Journals Database.These databases have obtained permission to digitally copy,compile,distribute,and disseminate the works of Baosteel Technical Research within their networks.The copyright usage fees are covered by the remuneration paid to the authors by Baosteel Technical Research.All authors submitting articles for publication in Baosteel Technical Research are hereby requested to conform to the above arrangement.If anyone has any objections,please inform regarding the same while submitting the manuscript so that the article is appropriately handled by Baosteel Technical Research. 展开更多
关键词 COPYRIGHT INDEXING copyright usage fees VINITI baosteel technical researchall proquest csa viniti China baosteel technical research databases
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Relationship between the use of smart medical services and mental health status
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作者 Elif Sarac 《World Journal of Psychiatry》 SCIE 2025年第1期21-25,共5页
In this editorial,I comment on the article by Zhang et al.To emphasize the importance of the topic,I discuss the relationship between the use of smart medical devices and mental health.Smart medical services have the ... In this editorial,I comment on the article by Zhang et al.To emphasize the importance of the topic,I discuss the relationship between the use of smart medical devices and mental health.Smart medical services have the potential to positively influence mental health by providing monitoring,insights,and inter-ventions.However,they also come with challenges that need to be addressed.Understanding the primary purpose for which individuals use these smart tech-nologies is essential to tailoring them to specific mental health needs and prefe-rences. 展开更多
关键词 Smart devices Medical service USAGE PEOPLE RELATIONSHIP Mental health status
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Co-Benefits of Antimicrobial Resistance Mitigation from China’s PM_(2.5)Air Pollution Reduction Between 2014-2020
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作者 Zhenchao Zhou Zejun Lin +9 位作者 Xinyi Shuai Xiaoliang Ba Chioma Achi Mark AHolmes Tong Xu Yingru Lu Yonghong Xiao Jianming Xu Baojing Gu Hong Chen 《Engineering》 2025年第2期243-251,共9页
The One Health concept acknowledges the importance of multiple dimensions in controlling antimicrobial resistance(AMR).However,our understanding of how anthropological,socioeconomic,and environmental factors drive AMR... The One Health concept acknowledges the importance of multiple dimensions in controlling antimicrobial resistance(AMR).However,our understanding of how anthropological,socioeconomic,and environmental factors drive AMR at a national level remains limited.To explore associations between potential contributing factors and AMR,this study analyzed an extensive database comprising 13 major antibioticresistant bacteria and over 30 predictors(e.g.,air pollution,antibiotic usage,economy,husbandry,public services,health services,education,diet,climate,and population)from 2014 to 2020 across China.The multivariate analysis results indicate that fine particulate matter with a diameter of 2.5 μm or less(PM_(2.5))is associated with AMR,accounting for 12%of the variation,followed by residents’income(10.3%)and antibiotic usage density(5.1%).A reduction in PM_(2.5)of 1 μg·m^(-3)is linked to a 0.17%decrease in aggregate antibiotic resistance(p<0.001,R^(2)=0.74).Under different scenarios of China’s PM_(2.5)airquality projections,we further estimated the premature death toll and economic burden derived from PM_(2.5)-related antibiotic resistance in China until 2060.PM_(2.5)-derived AMR is estimated to cause approximately 27000(95%confidence interval(CI):646848830)premature deaths and about 0.51(95%CI;0.12-0.92)million years of life lost annually in China,equivalent to an annual welfare loss of 8.4(95%CI;2.0-15.0)billion USD.Implementing the“Ambitious Pollution 1.5℃ Goals”scenario to reduce PM_(2.5)concentrations could prevent roughly 14000(95%CI;3324-26320)premature deaths—with a potential monetary value of 9.8(95%CI;2.2-17.6)billion USD—from AMR by 2060.These results suggest that reducing air pollution may offer co-benefits in the health and economic sectors by mitigating AMR. 展开更多
关键词 Antimicrobial resistance Air pollution Antibiotic usage Multivariable analysis Premature deaths NATIONWIDE
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Solving the AI sustainability dilemma
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《China Standardization》 2025年第4期57-57,共1页
According to the International energy Agency(IEA),a standard AI-oriented data center consumes as much electricity as 100,000 households.Data centers also use enormous amounts of water to build and cool electrical comp... According to the International energy Agency(IEA),a standard AI-oriented data center consumes as much electricity as 100,000 households.Data centers also use enormous amounts of water to build and cool electrical components and they also create a lot of electronic waste. 展开更多
关键词 electricity consumption data center data centers ai sustainability electrical components water usage electronic waste
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Creating Inclusive Public Parks: Identifying Park Features That Encourage Elderly Visitation in Bangkok, Thailand
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作者 Pornraht Pongprasert 《Journal of Environmental & Earth Sciences》 2025年第6期138-147,共10页
This study aims to examine the factors influencing the use of public parks among the elderly in Bangkok,Thai-land,amidst shifting demographics.As of mid-2024,seniors aged 60 and older accounted for 20.70%of Thailand’... This study aims to examine the factors influencing the use of public parks among the elderly in Bangkok,Thai-land,amidst shifting demographics.As of mid-2024,seniors aged 60 and older accounted for 20.70%of Thailand’s total population.With an annual growth rate of 4.89%,the country is steadily advancing toward becoming a super-aged society.The elderly population increasingly seeks not only senior-friendly housing but also accessible and inclusive public parks or spaces.Parks play a vital role in promoting the health,well-being,and social engagement of elderly individuals.This research explores the relationship between public park use and various independent variables,including public use behavior characteristics and factors associated with the use of public spaces.These factors are categorized into ac-cessibility attributes,diversity attributes,seating arrangement attributes,temperature and weather attributes,aesthetic attributes,safety attributes,and social interaction attributes.Data were collected from 299 respondents,who were asked to rate 25 questions on a 5-point Likert scale,addressing aspects related to their preferences and choices for using public parks.A binary logistic regression analysis was employed to identify the factors impacting elderly individuals’use of public parks in Bangkok.The results indicate that public park use behavior characteristics,along with accessibility,diversity,seating arrangements,aesthetics,safety,and social interaction attributes,significantly influence the use of public parks by elderly individuals.These findings provide valuable insights for public policymakers and park designers,offering recommendations on how to design and develop public parks that better cater to the needs of Bangkok’s aging popu-lation. 展开更多
关键词 Public Park Usage Park Features Built Environment Older Adults BANGKOK
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Age-Related Differences in Information Gathering among Nursing Students: Implications for Nursing Education
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作者 Yuriko Inoue Mikako Tanaka +6 位作者 Hiromitsu Ezure Junji Ito Akiko Sasaki Takashi Takaki Harumi Hata Masaaki Takayanagi Naruhito Otsuka 《Open Journal of Nursing》 2025年第1期60-66,共7页
Background: For nursing students, gathering social information is essential for understanding healthcare and social issues and developing critical thinking and decision-making skills. However, the choice of informatio... Background: For nursing students, gathering social information is essential for understanding healthcare and social issues and developing critical thinking and decision-making skills. However, the choice of information sources varies by age and individual habits. With the widespread use of the internet, there are notable differences between younger and older generations in their reliance on the internet versus traditional media sources like newspapers and television. Given the wide age range and diverse backgrounds of nursing students, understanding generational differences in information-gathering methods is important for implementing effective education. Purpose: The purpose of this study is to identify how nursing students in different age groups obtain social information and to examine media usage trends by age group. Additionally, we aim to use the findings to provide insights into effective information dissemination methods in nursing education. Results: The results showed that nursing students in their teens to forties, regardless of gender, primarily relied on the internet as their main information source, with television playing a secondary role. In contrast, students in their fifties tended to obtain information more often from newspapers and television than from the internet. This highlights an age-related difference in preferred information sources, with older students showing a greater reliance on traditional media. Conclusions: This study demonstrates that nursing students use different information-gathering methods based on their age, suggesting a need to custo-mize information dissemination strategies in nursing education. Digital media may be more effective for younger students, while traditional media or printed materials might better serve older students. Educational institutions should consider these generational differences in media usage and adopt strategies that meet the diverse needs of their student populations. 展开更多
关键词 Nursing Students Social Information Sources Media Usage Trends Generational Differences
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Exploring the Application of ChatGPT in Graduate Neuroscience Education
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作者 Cixia Li Xiaoping Wang +3 位作者 Xiao Li Xianwei Wang Qiong Li Ciqing Yang 《Journal of Contemporary Educational Research》 2025年第10期253-262,共10页
With artificial intelligence’s rapid progress,language models like ChatGPT are entering higher education,offering opportunities and risks.We surveyed faculty and graduate students at Henan Medical University to exami... With artificial intelligence’s rapid progress,language models like ChatGPT are entering higher education,offering opportunities and risks.We surveyed faculty and graduate students at Henan Medical University to examine ChatGPT’s role in graduate neuroscience teaching.Quantitative analyses profiled awareness,usage patterns,perceived roles,effectiveness,and concerns.Overall usage remained below 50%.Faculty and students most often used ChatGPT for reference consultation,research support,and academic writing;user experience was generally positive.Respondents reported benefits for information and resource integration(78.42%),comprehension of complex concepts(74.10%),learning interest and engagement(62.59%),personalized learning(50.36%),and timely feedback with abundant resources(65.47%).Nevertheless,participants highlighted challenges including information accuracy,academic integrity,and technological dependence,which could impede independent learning and critical thinking.Many favored broader,well-guided adoption paired with training.We conclude that ChatGPT can meaningfully support graduate neuroscience education when integrated with human instruction,rigorous verification,and clear ethical safeguards.Future work should evaluate learning outcomes longitudinally,develop evidence-based implementation frameworks,and address equity and privacy to realize sustainable impact in specialized domains. 展开更多
关键词 Generative artificial intelligence Usage patterns Self-regulated learning Academic integrity Survey report
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Booming Demand for Lithium Drives Extraction Innovation
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作者 Chris Palmer 《Engineering》 2025年第10期6-9,共4页
As the world races to electrify everything from vehicles to energy grids,demand for lithium-a key ingredient in lithiumion batteries(LIB)-has exploded.Yet conventional lithium mining has long carried a heavy environme... As the world races to electrify everything from vehicles to energy grids,demand for lithium-a key ingredient in lithiumion batteries(LIB)-has exploded.Yet conventional lithium mining has long carried a heavy environmental toll,including massive water usage,toxic chemical processes,and significant land disruption. 展开更多
关键词 land disruption lithiumion batteries lib LITHIUM mining environmental toll toxic chemical processes water usage lithium ion batteries
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Relationship between Chinese Medical Students’Perceived Stress and Short-Form Video Addiction:A Perspective Based on the Multiple Theoretical Frameworks
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作者 Zhi-Yun Zhang Yaqiong Wu +2 位作者 Chenshi Deng Peng Wang Weiguaju Nong 《International Journal of Mental Health Promotion》 2025年第10期1533-1551,共19页
Objectives:Medical students often rely on recreational internet media to relieve the stress caused by immense academic and life pressures,and among these media,short-form videos,which are an emerging digital medium,ha... Objectives:Medical students often rely on recreational internet media to relieve the stress caused by immense academic and life pressures,and among these media,short-form videos,which are an emerging digital medium,have gradually become the mainstream choice of students to relieve their stress.However,the addiction caused by their usage has attracted the widespread attention of both academia and society,which is why the purpose of this study is to systematically explore the underlying mechanisms that link perceived stress,entertainment gratification,emotional gratification,short-form video usage intensity,and short-form video addiction based on multiple theoretical frameworks including the Compensatory Internet Use Model(CIU),the Interaction of Person-Affect-Cognition-Execution Model(I-PACE),and the Use and Gratification Theory(UGT).Methods:A hypothetical model with 9 research hypotheses was constructed.Taking medical students from Chi-nese universities as the research subjects,1057 valid responses were collected through an online questionnaire survey,including 358 males and 658 females.Structural equation modelling(SEM)was performed using the AMOS software to test the research hypotheses.Results:(1)Perceived stress positively predicted entertainment gratification and emotional gratification(β=0.72,p<0.001;β=0.61,p<0.001);(2)Entertainment gratifi-cation and emotional gratification positively influenced short-form video usage intensity(β=0.35,p<0.001;β=0.19,p<0.001);(3)Entertainment gratification and emotional gratification positively predicted short-form video addiction(β=0.40,p<0.001;β=0.17,p<0.001);(4)Short-form video usage intensity positively influenced short-form video addiction(β=0.36,p<0.001);and(5)Perceived stress exerted an indirect but positive effect on both short-form video usage intensity and short-form video addiction,mediated by entertainment and emotional gratification(β=0.37,p<0.001;β=0.52,p<0.001).Conclusion:The mechanisms that underlie medical students’short-form video addiction in stressful situations were revealed in this study.It was found that stress enhances medical students’need for entertainment and emotional online compensation,prompting more frequent short-form video usage and ultimately leading to addiction.These results underscore the need to address the stressors faced by medical students.Effective interventions should prioritise stress management strategies and promote healthier alternative coping mechanisms to mitigate the risk of addiction. 展开更多
关键词 motional gratification entertainment gratification perceived stress short-form video addiction short-form video usage intensity
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Insights into novel indium catalyst to kW scale low cost,high cycle stability of iron-chromium redox flow battery
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作者 Yingchun Niu Yinping Liu +7 位作者 Tianhang Zhou Chao Guo Guangfu Wu Wenjie Lv Ali Heydari Bo Peng Chunming Xu Quan Xu 《Green Energy & Environment》 2025年第2期410-421,共12页
Iron-chromium flow batteries(ICRFBs)have emerged as an ideal large-scale energy storage device with broad application prospects in recent years.Enhancement of the Cr^(3+)/Cr^(2+)redox reaction activity and inhibition ... Iron-chromium flow batteries(ICRFBs)have emerged as an ideal large-scale energy storage device with broad application prospects in recent years.Enhancement of the Cr^(3+)/Cr^(2+)redox reaction activity and inhibition of the hydrogen evolution side reaction(HER)are essential for the development of ICRFBs and require a novel catalyst design.However,elucidating the underlying mechanisms for modulating catalyst behaviors remains an unresolved challenge.Here,we show a novel precisely controlled preparation of a novel thermal-treated carbon cloth electrode with a uniform deposit of low-cost indium catalyst particles.The density functional theory analysis reveals the In catalyst has a significant adsorption effect on the reactants and improves the redox reaction activity of Cr^(3+)/Cr^(2+).Moreover,H+is more easily absorbed on the surface of the catalyst with a high migration energy barrier,thereby inhibiting the occurrence of HER.The assembled ICRFBs have an average energy efficiency of 83.91%at 140 mA cm^(-2),and this method minimizes the electrodeposition process and cleans the last obstacle for industry long cycle operation requirements.The ICRFBs exhibit exceptional long-term stability with an energy efficiency decay rate of 0.011%per cycle at 1000 cycles,the lowest ICRFBs reported so far.Therefore,this study provides a promising strategy for developing ICRFBs with low costs and long cycle life. 展开更多
关键词 Iron-chromium flow batteries In catalyst Hydrogen evolution side reaction Cycle stability Industry usage
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Determination of Favorable Factors for Cloud IP Recognition Technology
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作者 Yuanyuan Ma Cunzhi Hou +3 位作者 Ang Chen Jinghui Zhang Ruixia Jin Ruixiang Li 《Computers, Materials & Continua》 2025年第7期1437-1456,共20页
Identifying cloud IP usage scenarios is critical for cybersecurity applications,yet existing machine learning methods rely heavily on numerous features,resulting in high complexity and low interpretability.To address ... Identifying cloud IP usage scenarios is critical for cybersecurity applications,yet existing machine learning methods rely heavily on numerous features,resulting in high complexity and low interpretability.To address these issues,this paper proposes an approach to identify cloud IPs from the perspective of network attributes.We employ data mining and crowdsourced collection strategies to gather IP addresses from various usage scenarios,which including cloud IPs and non-cloud IPs.On this basis,we establish a cloud IP identification feature set that includes attributes such as Autonomous System Number(ASN)and organization information.By analyzing the differences in the properties of different IP usage scenarios in the detection results,we can find out the factors that are conducive to cloud IP identification.Experimental evaluation demonstrates that the proposed method achieves a high identification accuracy of 96.67%,surpassing the performance of traditional machine learning models such as CNN,MLP,XGBoost,KNN,SVM,and Decision Tree,whose accuracies range between 81%and 92%.Furthermore,this study reveals that latency and port information exhibit insufficient discrimination power for distinguishing cloud IP from non-cloud IP scenarios,highlighting ASN as a simpler,more interpretable,and resource-efficient criterion.To facilitate reproducible research,datasets and codes are publicly released. 展开更多
关键词 Cloud IP identification organization information network attributes IP usage scenario
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Modeling the significance of unified theory of acceptance and use of technology in predicting the intention and usage of eCNY
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作者 Yue Ma Abdullah Al Mamun +1 位作者 Mohammad Masukujjaman Roslan Ja’afar 《Financial Innovation》 2025年第1期504-535,共32页
The introduction of the digital renminbi(eCNY)by the People’s Bank of China serves as a means for the central bank to effectively comprehend macroeconomic dynamics and enhance payment infrastructure within the domest... The introduction of the digital renminbi(eCNY)by the People’s Bank of China serves as a means for the central bank to effectively comprehend macroeconomic dynamics and enhance payment infrastructure within the domestic market.Among the pioneering digital currencies,the eCNY is at the forefront of technological research and development,pilot implementation,and the establishment of a robust system.Thus,employing the unified theory of acceptance and use of technology,this study aims to explore the factors shaping the adoption of the eCNY and to determine the mediating effects of intention toward the eCNY and the moderating role of age and gender among various relationships.A cross-sectional survey methodology was deployed to collect data from pilot communities situated within the Yangtze River Delta,Pearl River Delta,and Beijing–Tianjin–Hebei regions.The empirical analysis comprised 809 valid online questionnaires,and the examination was conducted through structural equation modeling employing the partial least squares technique,ultimately subjecting the conceptual model to a comprehensive assessment.The results for intention to use the eCNY indicate that performance expectancy,effort expectancy,social influence,and perceived government policy have significant effects.Facilitating conditions and intentions toward the eCNY positively influenced its actual use.According to the findings of this study,age and sex did not moderate the effect of each hypothesis on the intention to use in the research model.This study breaks new ground by investigating the adoption of the eCNY,a novel form of currency,highlighting its multifaceted nature and providing empirical evidence for a comprehensive model encompassing psychological,social,and contextual factors.This study employs social surveys to identify obstacles in the process of promoting the widespread adoption of the eCNY and offers suggestions to the central bank and government to increase user enthusiasm and decrease user perceptions of risk,thereby promoting its widespread adoption. 展开更多
关键词 Digital currency eCNY Intention and actual usage Unified theory of acceptance Use of technology
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Exploring the impact of mobile device use on mealtime distractions and its consequences for metabolic health:A narrative minireview
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作者 Muhammad Shahzad Aslam 《World Journal of Clinical Cases》 2025年第17期7-15,共9页
The habitual use of smartphones during meals has become a common behavior,raising concerns about its potential impact on eating habits and metabolic health.The present narrative review investigates how using a smartph... The habitual use of smartphones during meals has become a common behavior,raising concerns about its potential impact on eating habits and metabolic health.The present narrative review investigates how using a smartphone or tablet during meals can cause distractions and negatively affect metabolic health.A comprehensive narrative review was conducted by synthesizing peer-reviewed studies on the interplay between smartphone use during meals,eating behaviors,and metabolic health.Relevant literature was identified through searches in electronic databases and organized thematically to highlight trends and research gaps.By synthesizing evidence from existing literature,this review highlights that smartphone use during meals is associated with increased caloric intake,altered food composition,and disruptions in postprandial metabolic responses.These effects are mediated by reduced meal awareness and psychological distractions,including multitasking.Variability in findings arises from differences in study designs and populations.This review identifies critical research gaps,including the lack of longitudinal studies and the need to explore mechanisms underlying these relationships.By summarizing trends and patterns,this narrative review offers valuable insights into the complex interplay between digital device use,eating habits,and metabolic health,providing a foundation for future research and interventions. 展开更多
关键词 Digital devices Smartphone usage Mealtime behavior Eating habits Postprandial glucose Screen time Dietary patterns Metabolic responses Technological distractions Mobile health
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Complete Genomic Sequence Analysis of Sweet Potato Virus 2 Isolates from the Shandong and Jiangsu Provinces in China
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作者 Zichen Li Jukui Ma +2 位作者 Minjun Liu Guowei Geng Hongxia Zhang 《Phyton-International Journal of Experimental Botany》 2025年第6期1841-1856,共16页
Sweet potatoes are significant cash crops,however,their yield and quality are greatly compromised by viral diseases.In this study,the complete genomic sequences of two Sweet Potato Virus 2(SPV2)isolates from infected ... Sweet potatoes are significant cash crops,however,their yield and quality are greatly compromised by viral diseases.In this study,the complete genomic sequences of two Sweet Potato Virus 2(SPV2)isolates from infected sweet potato leaves in the Shandong(designated as SPV2-SDYT,GenBank No.PQ855660.1)and Jiangsu(designated as SPV2-JSXZ,GenBank No.PQ855661.1)provinces in China were obtained using 5′RACE and RT-PCR amplification.Consistency,phylogeny,codon usage bias,recombination,and selection pressure analyses were conducted using the SPV2-SDYT and SPV2-JSXZ genome sequences.The complete genome sequences of SPV2-SDYT and SPV2-JSXZ were 10561 nucleotides(nt)in length,with respective nucleotide and amino acid identities of 99.25%and 99.12%,respectively.Both isolates were closely related to the SPV2 isolate from China(SPV2-LN).In both SPV2-SDYT and SPV2-JSXZ,the identity of the P1 protein was the highest,whereas that of the P3 protein was the lowest.There were 26 codons with relatively synonymous codon usage(RSCU)values greater than 1 in SPV2-SDYT and 27 codons with RSCU values greater than 1 in SPV2-JSXZ.High-frequency codons in their genomes were predominantly found to end with A/U.Recombination analysis revealed no major recombination sites in either SPV2-SDYT or SPV2-JSXZ.Further selection pressure analysis showed that the non-synonymous substitution rate/synonymous substitution rate(dN/dS)value of all 10 SPV2 proteins was less than 1.This is the first report on the evolutionary relationships of the 17 known SPV2 isolates.Our findings lay the molecular groundwork for preventing and controlling SPV2 infection in root-tuber crops.These findings also contribute to our understanding of the spread and evolution of SPV2,its pathogenic mechanisms,and the development of antiviral strategies against it. 展开更多
关键词 Sweet potato virus 2 consistency analysis phylogenetic analysis codon usage bias analysis recombination analysis selection pressure analysis
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浅谈数据中心动力环境监控系统的设计需求
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作者 李昱翰 胡春玲 《通信与信息技术》 2025年第4期27-31,共5页
随着“东数西算”工程的全面启动,全国一体化大数据中心体系的建设布局完成,数据中心建设迎来蓬勃发展。动环监控系统通过对电源柜、UPS、空调、蓄电池等设备的遥测、遥信、遥调和遥控,实时监测运行参数,诊断处理故障,记录分析数据,实... 随着“东数西算”工程的全面启动,全国一体化大数据中心体系的建设布局完成,数据中心建设迎来蓬勃发展。动环监控系统通过对电源柜、UPS、空调、蓄电池等设备的遥测、遥信、遥调和遥控,实时监测运行参数,诊断处理故障,记录分析数据,实现数据中心基础设施的集中监控和维护。探讨动环监控系统的工作原理、设计与实现要点。通过中国电信某数据中心的工程案例,展示了动环监控系统的实际应用和效益。最后,展望了动环监控系统的应用价值和发展方向,强调其在节约人力资源、降低PUE值方面的重要作用,并预测了云服务化的未来趋势。 展开更多
关键词 动环监控系统 数据中心 能耗管理 PUE值(Power Usage Effectiveness)
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A Genome-wide Analysis of the 14-3-3 Gene Family in Chinese Chestnut(Castanea mollissima)
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作者 Xiaoxiao KANG Yaming LIU +1 位作者 Liying FAN Hai'e ZHANG 《Agricultural Biotechnology》 2025年第6期1-9,共9页
[Objectives]The 14-3-3 proteins are a class of highly conserved adapter proteins in eukaryotes that play a central role in signal transduction by recognizing phosphorylated target proteins and are crucial for plant gr... [Objectives]The 14-3-3 proteins are a class of highly conserved adapter proteins in eukaryotes that play a central role in signal transduction by recognizing phosphorylated target proteins and are crucial for plant growth and development.Chinese chestnut(Castanea mollissima)is an important woody grain crop in China.This study aimed to systematically identify the 14-3-3 gene family in chestnut and investigate their fundamental characteristics and functional clues,thereby laying a foundation for further elucidating the biological functions of this family in Chinese chestnut.[Methods]Using a combination of bioinformatics and molecular biology approaches,we conducted a comprehensive identification of the 14-3-3 family members in Chinese chestnut.Subsequently,we systematically analyzed their physicochemical properties,gene structures,conserved domains and motifs,gene duplication events,phylogenetic relationships,tissue-specific expression patterns,and codon usage bias.[Results]A total of nine 14-3-3 family members,designated CmGRF1 to CmGRF9,were identified and classified into two subgroups:epsilon(5 members)and non-epsilon(4 members).All CmGRF proteins were predicted to be hydrophilic.Phylogenetic analysis revealed a strong correlation between the clustering of CmGRFs and their respective gene structures,conserved domains,and motif compositions.Transcriptome data analysis indicated significant differences in the expression levels of different CmGRF members across various tissues and developmental stages.Codon preference analysis showed that CmGRFs tend to use codons ending with A/U,and their evolution is primarily driven by natural selection pressure.[Conclusions]This study provides the first genome-wide systematic analysis of the gene family in Chinese chestnut.The findings offer important theoretical insights and candidate genes for further research into the specific functions of these family members in chestnut growth,development,and stress responses. 展开更多
关键词 Chinese chestnut 14-3-3 gene family Phylogenetic analysis Codon usage bias
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