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Women’s empowerment and food consumption:Evidence from female-headed households in Tanzania 被引量:1
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作者 Mosses Lufuke Xu Tian 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第2期457-467,共11页
Despite the growing recognition of women’s increasing role in the household and corresponding empowerment programs in sub-Saharan Africa,intensive research on the relationship between women’s influence and household... Despite the growing recognition of women’s increasing role in the household and corresponding empowerment programs in sub-Saharan Africa,intensive research on the relationship between women’s influence and household food consumption is minimal.Using the most recent(2017-2018)national household survey data from Tanzania,this study examined the influence of women’s empowerment on household food consumption.First,we compared the monthly consumption of eight food categories between female-headed households(FHHs)and male-headed households(MHHs)using both descriptive statistics and the propensity score matching(PSM)method.Furthermore,we adopted the two-stage Linear Expenditure System and Almost Ideal Demand System model(LES-AIDS)to estimate income and price elasticities for the two household types.The results show that FHHs consume bread and cereals,fish,oils and fats,vegetables,and confectionery(sugar,jam,honey,chocolate,etc.)more than MHHs.Moreover,FHHs have a significantly higher income elasticity of demand for all food groups than MHHs.They are also more price elastic than MHHs in meat,fish,oils,fats,sugar,jam,honey,chocolate,etc. 展开更多
关键词 women’s empowerment food consumption income elasticity price elasticity
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Artificial Intelligence Based Multi-Scenario mmWave Channel Modeling for Intelligent High-Speed Train Communications
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作者 Zhang Mengjiao Liu Yu +4 位作者 Huang Jie He Ruisi Zhang Jingfan Yu Chongyang Wang Chengxiang 《China Communications》 SCIE CSCD 2024年第3期260-272,共13页
A large amount of mobile data from growing high-speed train(HST)users makes intelligent HST communications enter the era of big data.The corresponding artificial intelligence(AI)based HST channel modeling becomes a tr... A large amount of mobile data from growing high-speed train(HST)users makes intelligent HST communications enter the era of big data.The corresponding artificial intelligence(AI)based HST channel modeling becomes a trend.This paper provides AI based channel characteristic prediction and scenario classification model for millimeter wave(mmWave)HST communications.Firstly,the ray tracing method verified by measurement data is applied to reconstruct four representative HST scenarios.By setting the positions of transmitter(Tx),receiver(Rx),and other parameters,the multi-scenarios wireless channel big data is acquired.Then,based on the obtained channel database,radial basis function neural network(RBF-NN)and back propagation neural network(BP-NN)are trained for channel characteristic prediction and scenario classification.Finally,the channel characteristic prediction and scenario classification capabilities of the network are evaluated by calculating the root mean square error(RMSE).The results show that RBF-NN can generally achieve better performance than BP-NN,and is more applicable to prediction of HST scenarios. 展开更多
关键词 artificial intelligence channel characteristic prediction HST channel millimeter wave scenario classification
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Application of Patient Simulators Combined with Internet plus Scenario Simulation Teaching Models on Intravenous Infusion Nursing Education in China
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作者 Ying Wu Yun Chen +5 位作者 Liuyan Zhang Guohua Huang Jinai He Yutong Li Yuzhen Renqing Zhijuan Zhan 《Journal of Biosciences and Medicines》 2024年第1期64-71,共8页
Objective: To explore the effectiveness of applying patient simulators combined with Internet Plus scenario simulation teaching models on intravenous (IV) infusion nursing education, and to provide scientific evidence... Objective: To explore the effectiveness of applying patient simulators combined with Internet Plus scenario simulation teaching models on intravenous (IV) infusion nursing education, and to provide scientific evidence for the implementation of advanced teaching models in future nursing education. Methods: Enrolled 60 nurses who took the IV infusion therapy training program in our hospital from January 2022 to December 2023 for research. 30 nurses who were trained in traditional teaching models from January to December 2022 were selected as the control group, and 30 nurses who were trained with simulation-based teaching models with methods including simulated patients, internet, online meetings which can be replayed and scenario simulation, etc. from January to December 2023 were selected as the experimental group. Evaluated the learning outcomes based on the Competency Inventory for Nursing Students (CINS), Problem-Solving Inventory (PSI), comprehensive learning ability, scientific research ability, and proficiency in the theoretical knowledge and practical skills of IV infusion therapy. Nursing quality, the incidence of IV infusion therapy complications and nurse satisfaction with different teaching models were also measured. Results: The scientific research ability, PSI scores, CINS scores, and comprehensive learning ability of the experimental group were better than those of the control group (P 0.05), and their assessment results of practical skills, nursing quality of IV infusion therapy during training, and satisfaction with teaching models were all better than those of the control group with statistical significance (P < 0.05). The incidence of IV infusion therapy complications in the experimental group was lower than that in the control group, indicating statistical significance (P < 0.05). Conclusions: Teaching models based on patient simulators combined with Internet Plus scenario simulation enable nursing students to learn more directly and practice at any time and in any place, and can improve their proficiency in IV infusion theoretical knowledge and skills (e.g. PICC catheterization), core competencies, problem-solving ability, comprehensive learning ability, scientific research ability and the ability to deal with complicated cases. Also, it helps provide high-quality nursing education, improve the nursing quality of IV therapy, reduce the incidence of related complications, and ensure the safety of patients with IV therapy. 展开更多
关键词 Specialty of Intravenous Infusion Therapy Nursing Education Patient Simulators Internet Plus scenario Simulation Teaching Model
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Analysis of factors influencing carbon emissions in the Yangtze River Delta region and projections of carbon peak scenarios
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作者 SHI Xiong-tian WU Feng-qing +1 位作者 CHEN Yang DAI Li-li 《Ecological Economy》 2024年第1期2-24,共23页
Based on the supply-side perspective,the improved STIRPAT model is applied to reveal the mechanisms of supply-side factors such as human,capital,technology,industrial synergy,institutions and economic growth on carbon... Based on the supply-side perspective,the improved STIRPAT model is applied to reveal the mechanisms of supply-side factors such as human,capital,technology,industrial synergy,institutions and economic growth on carbon emissions in the Yangtze River Delta(YRD)through path analysis,and to forecast carbon emissions in the YRD from the baseline scenario,factor regulation scenario and integrated scenario to reach the peak.The results show that:(1)Jiangsu's high carbon emission pattern is the main reason for the YRD hindering the synergistic regulation of carbon emissions.(2)Human factors,institutional factors and economic growth factors can all contribute to carbon emissions in the YRD region,while technological and industrial factors can generally suppress carbon emissions in the YRD region.(3)Under the capital regulation scenario,the YRD region has the highest level of carbon emission synergy,with Jiangsu reaching its peak five years earlier.Under the balanced regulation scenario,the YRD region as a whole,Jiangsu,Zhejiang and Anhui reach the peak as scheduled. 展开更多
关键词 Yangtze River Delta carbon peaking scenario forecasting STIRPAT model
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Multi-scenario Simulation of the Impact of Land Use Change on the Ecosystem Service Value in the Suzhou-Wuxi-Changzhou Metropolitan Area,China
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作者 WANG Bin HU Chunguang ZHANG Yushuo 《Chinese Geographical Science》 SCIE CSCD 2024年第1期79-92,共14页
As the most economically developed metropolitan area in China’s Yangtze River Delta,the rapid changing land use patterns of Suzhou-Wuxi-Changzhou(Su-Xi-Chang) metropolitan area have profound impacts on the ecosystem ... As the most economically developed metropolitan area in China’s Yangtze River Delta,the rapid changing land use patterns of Suzhou-Wuxi-Changzhou(Su-Xi-Chang) metropolitan area have profound impacts on the ecosystem service value(ESV).Based on the patterns of land use change and the ESV change in Su-Xi-Chang metropolitan area from 2000 to 2020,we set up four scenarios:natural development scenario,urban development scenario,arable land protection scenario and ecological protection scenario,and simulated the impact of land use changes on the ESV in these scenarios.The results showed that:1) the area of built-up land in the Su-XiChang metropolitan area increased significantly from 2000 to 2020,and the area of other types of land decreased.Arable land underwent the highest transfer-out area,and was primarily converted into built-up land.The total ESV of Su-Xi-Chang metropolitan area increased initially then declined from 2000–2020,and the value of almost all individual ecosystem services decreased.2) Population density,GDP per area,night lighting intensity,and road network density can negatively impact the ESV.3) The total ESV loss under the natural development and urban development scenarios was high,and the expansion of the built-up land and the drastic shrinkage of the arable land contributed to the ESV decline under both scenarios.The total ESV under arable land protection and ecological protection scenarios increases,and therefore these scenarios are suitable for future land use optimization in Su-Xi-Chang.This study could provide a certain reference for land use planning and allocation,and offer guidance for the rational allocation of land resources. 展开更多
关键词 multiple scenarios land use simulation ecosystem service value(ESV) Patch-Generating Land Use Simulation(PLUS)model Suzhou-Wuxi-Changzhou(Su-Xi-Chang)metropolitan area
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Exploration of Curriculum Reform in the Context of Digital Empowerment:Taking the“Class Management”Course in the Primary Education Major of Higher Vocational Normal School as an Example
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作者 Meiping Huang 《Journal of Contemporary Educational Research》 2024年第2期123-130,共8页
In the era of digital empowerment,the digital reform of higher vocational courses has become an inevitable trend.To explore professional curriculum reform,this study takes the“Class Management”course in the primary ... In the era of digital empowerment,the digital reform of higher vocational courses has become an inevitable trend.To explore professional curriculum reform,this study takes the“Class Management”course in the primary education major of higher vocational teachers as the research object,analyzes the importance of digital empowerment to curriculum reform,and discusses the teaching of the“Class Management”course new model and content reform plan.Digital technology empowering traditional courses is a new trend,which is both an opportunity and a challenge.This study aims to explore the application of digital technology in courses and provide certain guidelines for curriculum reform in the field of education. 展开更多
关键词 Digital empowerment Curriculum reform Innovative exploration
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Empowerment in chronic wound care——exploring the scope for patient contribution
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作者 Benedikt Hackert Ewa Klara Stürmer Ulrich Weger 《Frontiers of Nursing》 2024年第1期1-16,共16页
Objective:In this study,we investigated the concept of empowerment in chronic wound care and propose to facilitate patient control by making use of degrees of freedom(DOF):that is,shaping of everyday wound care tasks ... Objective:In this study,we investigated the concept of empowerment in chronic wound care and propose to facilitate patient control by making use of degrees of freedom(DOF):that is,shaping of everyday wound care tasks initiated by patients and based on their wishes,mostly in terms of patients executing treatment steps,requesting or directing health care professionals to under take changes,or modifications of internal states.Methods:As a first step,we conducted a systematic literature search,followed by an inductive form of qualitative content analysis,which resulted in the identification of 5 dimensions as main elements of empowerment:education and shared decision making,adherence to self-care behaviors,responsibility and control,general call for empowerment,and DOF.However,the latter are noticeably absent in the literature.To investigate patients'freedom in shaping the wound care process,we conducted a second literature search.Results:A number of possibilities for patients to influence the wound care process could be identified,but experimental or clinical evidence about their effects is missing,their variety is limited,and they are only inadequately described.Conclusions:However,DOF should be an indispensable aspect of genuine empowerment,since they allow patients to occupy the role of the agent in the treatment process and give rise to the subjective experience of feeling empowered.Thus,in the third part,we develop a research proposal on how to investigate and include DOF in the clinical practice of wound care.Finally,limitations about implementations are discussed(e.g.,patients being reluctant to overcome their passive role,resulting in frustration for health care professionals). 展开更多
关键词 ADHERENCE chronic wounds control degrees of freedom empowerment shared decision making
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Radio Communication Scenarios in 5G-Railways 被引量:1
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作者 Ruisi He Bo Ai +8 位作者 Zhangdui Zhong Mi Yang Chen Huang Ruifeng Chen Jianwen Ding Hang Mi Zhangfeng Ma Guiqi Sun Changzhu Liu 《China Communications》 SCIE CSCD 2023年第9期235-246,共12页
With the rapid development of railways,especially high-speed railways,there is an increasingly urgent demand for new wireless communication system for railways.Taking the mature 5G technology as an opportunity,5G-rail... With the rapid development of railways,especially high-speed railways,there is an increasingly urgent demand for new wireless communication system for railways.Taking the mature 5G technology as an opportunity,5G-railways(5G-R)have been widely regarded as a solution to meet the diversified demands of railway wireless communications.For the design,deployment and improvement of 5GR networks,radio communication scenario classification plays an important role,affecting channel modeling and system performance evaluation.In this paper,a standardized radio communication scenario classification,including 18 scenarios,is proposed for 5GR.This paper analyzes the differences of 5G-R scenarios compared with the traditional cellular networks and GSM-railways,according to 5G-R requirements and the unique physical environment and propagation characteristics.The proposed standardized scenario classification helps deepen the research of 5G-R and promote the development and application of the existing advanced technologies in railways. 展开更多
关键词 5G-R scenario classification smart rail-ways
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Spatiotemporal Characteristics and Future Scenario Simulation of the Trade-offs and Synergies of Mountain Ecosystem Services: A Case Study of the Dabie Mountains Area, China 被引量:1
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作者 FANG Lin LIU Yanxiao +1 位作者 LI Canfeng CAI Jun 《Chinese Geographical Science》 SCIE CSCD 2023年第1期144-160,共17页
Mountain ecosystems play an essential role in supporting regional sustainable development and improving local ecological environments. However, economic development in mountainous areas has long been lagging, and mult... Mountain ecosystems play an essential role in supporting regional sustainable development and improving local ecological environments. However, economic development in mountainous areas has long been lagging, and multiple conflicts related to resource assurance, ecological protection, and economic development have emerged. An accurate grasp of the current status and evolutionary trends of mountain ecosystems is essential to enhance the overall benefits of ecosystem services and maintain regional ecological security. Based on the In VEST(Integrated Valuation of Ecosystem Services and Trade-offs) model, this study analyzed the spatiotemporal evolution patterns and the trade-offs and synergies among ecosystem services(ES) in the Dabie Mountains Area(DMA) of eastern China. The Markov-PLUS(Patch-generating Land Use Simulation) model was used to conduct a multi-scenario simulation of the area's future development. Water yield(WY) and soil conservation(SC) had overall increasing trends during 2000-2020, carbon storage(CS)decreased overall but slowed with time, and habitat quality(HQ) increased and then decreased. The ecological protection scenario is the best scenario for improving ES in the DMA by 2030;compared to 2020, the total WY would decrease by 3.77 × 10^(8) m^(3), SC would increase by 0.65 × 10^(6) t, CS would increase by 1.33 × 10^(6) t, and HQ would increase by 0.06%. The comprehensive development scenario is the second-most effective scenario for ecological improvement, while the natural development scenario did not have a significant effect. However, as the comprehensive development scenario considers both environmental protection and economic development, which are both vital for the sustainable development of the mountainous areas, this scenario is considered the most suitable path for future development. There are trade-offs between WY, CS, and HQ, while there are synergies between SC, CS, and HQ. Spatially, the DMA's central core district is the main strong synergistic area, the marginal zone is the weak synergistic area, and trade-offs are mainly distributed in the transition zone. 展开更多
关键词 ecosystem services trade-offs InVEST(Integrated Valuation of Ecosystem Services and Trade-offs)model PLUS(Patchgenerating Land Use Simulation)model scenario projection Dabie Mountains China
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Prediction of forest fire occurrence in China under climate change scenarios
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作者 Yakui Shao Guangpeng Fan +6 位作者 Zhongke Feng Linhao Sun Xuanhan Yang Tiantian Ma XuSheng Li Hening Fu Aiai Wang 《Journal of Forestry Research》 SCIE CAS CSCD 2023年第5期1217-1228,共12页
Climate change has an impact on forest fire patterns.In the context of global warming,it is important to study the possible effects of climate change on forest fires,carbon emission reductions,carbon sink effects,fore... Climate change has an impact on forest fire patterns.In the context of global warming,it is important to study the possible effects of climate change on forest fires,carbon emission reductions,carbon sink effects,forest fire management,and sustainable development of forest ecosystems.This study is based on MODIS active fire data from 2001-2020 and the influence of climate,topography,vegetation,and social factors were integrated.Temperature and precipitation information from different scenarios of the BCC-CSM2-MR climate model were used as future climate data.Under climate change scenarios of a sustainable low development path and a high conventional development path,the extreme gradient boosting model predicted the spatial distribution of forest fire occurrence in China in the 2030s(2021-2040),2050s(2041-2060),2070s(2061-2080),and2090s(2081-2100).Probability maps were generated and tested using ROC curves.The results show that:(1)the area under the ROC curve of training data(70%)and validation data(30%)were 0.8465 and 0.8171,respectively,indicating that the model can reasonably predict the occurrence of forest fire in the study area;(2)temperature,elevation,and precipitation were strongly correlated with fire occurrence,while land type,slope,distance from settlements and roads,and slope direction were less strongly correlated;and,(3)based on future climate change scenarios,the probability of forest fire occurrence will tend to shift from the south to the center of the country.Compared with the current climate(2001-2020),the occurrence of forest fires in 2021-2040,2041-2060,2061-2080,and 2081-2100 will increase significantly in Henan Province(Luoyang,Nanyang,S anmenxia),Shaanxi Province(Shangluo,Ankang),Sichuan Province(Mianyang,Guangyuan,Ganzi),Tibet Autonomous Region(Shannan,Linzhi,Changdu),Liaoning Province(Liaoyang,Fushun,Dandong). 展开更多
关键词 Climate change scenarios XGBoost model Forest fires China
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Water yield and biomass production for on a eucalypt-dominated Mediterranean catchment under different climate scenarios
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作者 Joao Rocha Ana Quintela +2 位作者 Dalila Serpa Jan Jacob Keizer Sérgio Fabres 《Journal of Forestry Research》 SCIE CAS CSCD 2023年第5期1263-1278,共16页
Worldwide,forests are vital in the regulation of the water cycle regulation and in water balance allocation.Knowledge of ecohydrological responses of production forests is essential to support management strategies,es... Worldwide,forests are vital in the regulation of the water cycle regulation and in water balance allocation.Knowledge of ecohydrological responses of production forests is essential to support management strategies,especially where water is already scarce.Shifting climatological patterns are expected to impact thermopluviometric regimes,water cycle components,hydrological responses,and plant physiology,evapotranspiration rates,crop productivity and land management operations.This work(1)assessed the impacts of different predicted climate conditions on water yield;(2)inferred the impacts of climate change on biomass production on eucalypt-to-eucalypt succes sion.To this end,the widely accepted Soil and Water Assessment Tool(SWAT)was run with the RCA,HIRHAM5 and RACMO climate models for two emission scenarios(RCP 4.5 and8.5).Three 12-year periods were considered to simulate tree growth under coppice regime.The results revealed an overall reduction in streamflow and water yield in the catchment in line with the projected reduction in total annual precipitation.Moreover,HIRHAM5 and RACMO models forecast a slight shift in seasonal streamflow of up to 2 months(for2024-2048)in line with the projected increase in precipitation from May to September.For biomass production,the extreme climate model(RCA)and severe emis sion scenario(RCP 8.5)predicted a decrease up to 46%.However,in the less extreme and more-correlated(with actual catchment climate conditions)climate models(RACMO and HIRHAM5)and in the less extreme emission scenario(RCP 4.5),biomass production increased(up to 20%),and the growth cycle was slightly reduced.SWAT was proven to be a valuable tool to assess climate change impacts on a eucalypt-dominated catchment and is a suitable decision-support tool for forest managers. 展开更多
关键词 Climate scenarios Forested catchments Forest ecohydrological modelling Eucalypt biomass production SWAT model
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The Impact of Nurses Recognition, and Empowerment Related to Nurses Job Satisfaction at KFSH-D
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作者 Reem Al Ahmari Sarah Al Qannass +2 位作者 Pratheema Govallen Naslabari Moorkan Zahra Homoud 《Open Journal of Nursing》 2023年第2期81-94,共14页
Introduction: Nurses’ job satisfaction is referring to the level to which people feel that they are able to have an influence on their workplace. Nurse leaders should use a variety of empowerment strategies that are ... Introduction: Nurses’ job satisfaction is referring to the level to which people feel that they are able to have an influence on their workplace. Nurse leaders should use a variety of empowerment strategies that are important to nurses’ job satisfaction. Meanwhile, meaningful recognition for nurses is considered a powerful tool to enhance nurses’ sense of self-efficacy especially facing an emotional challenge that may affect their wellbeing. Aim: The aim of the studies is to analyze the importance of nurses’ recognition, and empowerment towards nurses’ job satisfaction at KFSH-D. Method: This study takes the form of a quantitative research methodology, and descriptive-analytical technique. A questionnaire used to gather data from registered nurses employed at King Fahad Specialist Hospital-Dammam (KFSH-D) about the structural empowerment and nurses’ recognition program impact on their job satisfaction. Following the collection of data, the descriptive statistic used to describe the personal characteristics of the respondents, while inferential statistics used to determine the statistical relationship existing between independent variable job satisfaction and the structural empowerment and nurses’ recognition program among the registered nurses at KFSH-D as dependent variables. Recommendation: The researcher only focuses on the in-patient units, future studies, are recommended to focus on every dimension and category level of units. Apart from that, when looking into job satisfaction and empowerment, to be more specific, the researcher could investigate another dimension by comparing age, and clinical working experience which may provide a depth of understanding of the contribution perception of structural empowerment. Conclusion: The findings of the studies reveal recognition and empowerment are assets to make nurses stay and increase their level of job satisfaction and task assignments. 展开更多
关键词 Job Satisfaction Meaningful Recognition Structural empowerment Organizational Commitment
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Potential global distribution of the guava root-knot nematode Meloidogyne enterolobii under different climate change scenarios using MaxEnt ecological niche modeling
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作者 PAN Song PENG De-liang +4 位作者 LI Ying-mei CHEN Zhi-jie ZHAI Ying-yan LIU Chen HONG Bo 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2023年第7期2138-2150,共13页
In recent years,Meloidogyne enterolobii has emerged as a major parasitic nematode infesting many plants in tropical or subtropical areas.However,the regions of potential distribution and the main contributing environm... In recent years,Meloidogyne enterolobii has emerged as a major parasitic nematode infesting many plants in tropical or subtropical areas.However,the regions of potential distribution and the main contributing environmental variables for this nematode are unclear.Under the current climate scenario,we predicted the potential geographic distributions of M.enterolobii worldwide and in China using a Maximum Entropy(MaxEnt)model with the occurrence data of this species.Furthermore,the potential distributions of M.enterolobii were projected under three future climate scenarios(BCC-CSM2-MR,CanESM5 and CNRM-CM6-1)for the periods 2050s and 2090s.Changes in the potential distribution were also predicted under different climate conditions.The results showed that highly suitable regions for M.enterolobii were concentrated in Africa,South America,Asia,and North America between latitudes 30°S to 30°N.Bio16(precipitation of the wettest quarter),bio10(mean temperature of the warmest quarter),and bio11(mean temperature of the coldest quarter)were the variables contributing most in predicting potential distributions of M.enterolobii.In addition,the potential suitable areas for M.enterolobii will shift toward higher latitudes under future climate scenarios.This study provides a theoretical basis for controlling and managing this nematode. 展开更多
关键词 Meloidogyne enterolobii species distribution model MAXENT climate change future climate scenarios centroid change
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The Climate Response to Global Forest Area Changes under Different Warming Scenarios in China
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作者 Ying HUANG Anning HUANG Jie TAN 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2023年第6期1073-1088,共16页
Human activities have notably affected the Earth’s climate through greenhouse gases(GHG), aerosol, and land use/land cover change(LULCC). To investigate the impact of forest changes on regional climate under differen... Human activities have notably affected the Earth’s climate through greenhouse gases(GHG), aerosol, and land use/land cover change(LULCC). To investigate the impact of forest changes on regional climate under different shared socioeconomic pathways(SSPs), changes in surface air temperature and precipitation over China under low and medium/high radiative forcing scenarios from 2021 to 2099 are analyzed using multimodel climate simulations from the Coupled Model Intercomparison Project Phase 6(CMIP6). Results show that the climate responses to forest changes are more significant under the low radiative forcing scenario. Deforestation would increase the mean, interannual variability, and the trend of surface air temperature under the low radiative forcing scenario, but it would decrease those indices under the medium/high radiative forcing scenario. The changes in temperature show significant spatial heterogeneity. For precipitation, under the low radiative forcing scenario, deforestation would lead to a significant increase in northern China and a significant decrease in southern China, and the effects are persistent in the near term(2021–40), middle term(2041–70), and long term(2071–99). In contrast, under the medium/high radiative forcing scenario, precipitation increases in the near term and long term over most parts of China, but it decreases in the middle term, especially in southern, northern,and northeast China. The magnitude of precipitation response to deforestation remains comparatively small. 展开更多
关键词 land use/land cover change DEFORESTATION radiative forcing scenario regional climate
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A Rigorous Analysis of Vehicle-to-Vehicle Range Performance in a Rural Channel Propagation Scenario as a Function of Antenna Type and Location via Simulation and Field Trails
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作者 Ran Liu Daniel N.Aloi 《China Communications》 SCIE CSCD 2023年第11期131-141,共11页
Vehicle-to-Everything(V2X) communications will be an essential part of the technology in future autonomous drive decision systems.A fundamental procedure is to establish a robust communication channel between end-to-e... Vehicle-to-Everything(V2X) communications will be an essential part of the technology in future autonomous drive decision systems.A fundamental procedure is to establish a robust communication channel between end-to-end devices.Due to the antenna placed at different positions on vehicles,the existing cellular electro-magnetic(EM) wave propagation modelling does not fit properly for V2X direct communication application.In order to figure out a feasible understanding of this problem,this paper focuses on the propagation channel analysis in a rural Vehicle-to-Vehicle(V2V) scenario for vehicular communication with antenna position experiments at different heights.By adopting the ray-tracing algorithm,a rural scenario simulation model is built up via the use of a commercial-off-the-shelf(COTS) EM modelling software package,that computes the path loss received power and delay spread for a given propagation channel.Next,a real-world vehicle measurement campaign was performed to verify the simulation results.The simulated and measured receiver power was in good agreement with each other,and the results of this study considered two antenna types located at three different relative heights between the two vehicles.This research provides constructive guidance for the V2V antenna characteristics,antenna placement and vehicle communication channel analysis. 展开更多
关键词 antenna simulation and measurement propagation channel modeling ray-tracing simula-tion V2V scenario propagation
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ChatGPT Fervor:The Empowerments,and Challenges of EST Translation Teaching with Natural Language Models
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作者 ZHANG Jia-mei CHEN Yuan +1 位作者 TANG Yu-chen LYU Jia-jun 《Journal of Literature and Art Studies》 2023年第8期600-606,共7页
The development and widespread adoption of new technologies like ChatGPT have had a profound impact on education.This paper discusses how ChatGPT empowers the teaching and learning of technical English translation and... The development and widespread adoption of new technologies like ChatGPT have had a profound impact on education.This paper discusses how ChatGPT empowers the teaching and learning of technical English translation and sheds light on the negative effects and the challenges it brings.Furthermore,it presents strategies for technical English translation teaching assisted by ChatGPT. 展开更多
关键词 ChatGPT EST translation teaching empowerments CHALLENGES STRATEGIES
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场景赋能驱动下的工业互联网平台成长演化——“柠檬豆”案例研究 被引量:1
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作者 王水莲 钱鹏浩 王静 《科技进步与对策》 北大核心 2024年第6期11-20,共10页
工业互联网平台是工业领域的数字新经济,是数字经济与实体经济融合的关键载体。以“柠檬豆”平台为案例研究对象分析工业互联网平台成长演化机理,研究发现,工业互联网平台场景赋能以平台用户需求场景为牵引,开发冗余数据资源,整合异质资... 工业互联网平台是工业领域的数字新经济,是数字经济与实体经济融合的关键载体。以“柠檬豆”平台为案例研究对象分析工业互联网平台成长演化机理,研究发现,工业互联网平台场景赋能以平台用户需求场景为牵引,开发冗余数据资源,整合异质资源,实现资源共享、知识传导和数字协同;工业价值网络中的资源映射到工业互联网平台上成为可调用的数据资源,数字孪生产生更丰富的场景,驱动网络效应强化;工业互联网平台成长演化的本质是基于场景赋能体系构建的价值创造过程与基于网络效应形成的生态构建过程之间的交互共演。响应场景驱动创新范式,研究有助于完善平台组织理论,丰富网络效应研究情境,为我国工业互联网平台高质量发展提供理论依据。 展开更多
关键词 工业互联网平台 场景赋能 网络效应 平台成长
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Study on 5G Application Scenarios in Intelligent High-Speed Railway
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作者 LI Ping LUAN Zhong +3 位作者 LIU Ziyuan CHENG Zhibo XIE Chenhui ZHANG Yiran 《Chinese Railways》 2023年第1期45-53,共9页
5G technology is indispensable for developing comprehensive perception and ubiquitous interconnection of intelligent high-speed railways(HSRs),and can be applied to many scenarios in intelligent construction,intellige... 5G technology is indispensable for developing comprehensive perception and ubiquitous interconnection of intelligent high-speed railways(HSRs),and can be applied to many scenarios in intelligent construction,intelligent equipment,intelligent operation and in other fields.In order to promote the standardized application of 5G technology in intelligent HSRs in a scientific and orderly manner and to avoid redundant construction and wasteful investment,it is imperative to carry out a systematical top-level design of the application scenarios at the initial stage.To this end,after investigating and analyzing the 5G application demands in different aspects of HSRs and the general structure of the railway 5G network,this paper formulates an overall planning of 5G technology application scenarios and proposes solutions to some typical application scenarios in the intelligent HSR system,based on the architecture and requirements of the intelligent HSR system. 展开更多
关键词 intelligent high-speed railway 5G technology COMMUNICATION application scenarios
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空间植物栽培装置方案与验证
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作者 唐永康 蔡旭哲 +6 位作者 吴浩 吴志强 艾为党 沈韫赜 毛瑞鑫 胡清华 王隆基 《哈尔滨工业大学学报》 EI CAS CSCD 北大核心 2024年第4期158-164,共7页
为满足空间植物培养的需求,基于空间微重力环境和平台资源约束,开展了根部水分和养分控制、栽培室大气环境控制、光环境控制等方面的空间植物栽培装置方案研究。研制了具有水分/养分供应、大气环境控制、光源、测量与控制、栽培室和根盘... 为满足空间植物培养的需求,基于空间微重力环境和平台资源约束,开展了根部水分和养分控制、栽培室大气环境控制、光环境控制等方面的空间植物栽培装置方案研究。研制了具有水分/养分供应、大气环境控制、光源、测量与控制、栽培室和根盘等6个功能模块的空间植物栽培装置。开展了装置的集成与调试,对装置各功能模块设计合理性进行验证。最后利用组合体试验平台,进行装置各功能模块集成性能验证、植物功能评价验证(生物学特性、物质和能量交换、营养品质和生物安全性等)及植物栽培流程验证(流程合理性、资源需求及保障、与环境之间的相互影响)。验证结果表明:水分供应、养分供应、大气环境控制、植物光照控制和参数测量控制等性能良好,能够满足植物培养对各类生长环境条件的需求;生菜生长旺盛,生产效率101.31 g(鲜质量)·(kWh)^(-1)·d^(-1)·m^(-2),光能利用率0.31 g(干质量)·mol^(-1)光子,富含各种营养,食用安全。装置方案和植物栽培流程合理可行,性能良好,具有较高的植物生产能力。研究结果为后续开展空间植物栽培装置研制奠定了技术基础。 展开更多
关键词 空间 植物 栽培 装置 方案
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全流程一站式智慧化入院服务场景的构建与应用
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作者 朱永洁 辛海燕 +4 位作者 陈军伟 李江峰 宋秀红 冷敏 单信芝 《中国医院管理》 北大核心 2024年第5期10-13,30,共5页
青岛大学附属医院以入院过程关键节点为线索,立足患者需求,自主研发患者服务平台,构建智慧化入院服务场景,延伸院前入院准备服务,拓展患者入院办理模式,真正为患者解决住院的衣食住行问题。全流程一站式智慧化入院服务场景的构建与应用... 青岛大学附属医院以入院过程关键节点为线索,立足患者需求,自主研发患者服务平台,构建智慧化入院服务场景,延伸院前入院准备服务,拓展患者入院办理模式,真正为患者解决住院的衣食住行问题。全流程一站式智慧化入院服务场景的构建与应用,为优化和拓展入院服务流程、提升患者就医体验、提高医院管理效率提供了借鉴。 展开更多
关键词 入院服务 场景 患者需求
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