The study introduced the development of stone elements in Italian Renaissance Garden and Chinese classical garden, analyzed the stonework of Renaissance Garden and the placing stone technique of Chinese classical gard...The study introduced the development of stone elements in Italian Renaissance Garden and Chinese classical garden, analyzed the stonework of Renaissance Garden and the placing stone technique of Chinese classical garden from different angles and made a comparative analysis of the two from the aesthetic thought, stone selection and technique.展开更多
1.The second stage of the LM-3 launch vehicle being tested2.Mobilization meeting for the launch of APstar-1A being held3.Acclaiming the precise orbital insertion of
In order to address the problem of citrus seedling pot filling and transporting which is time-consuming and labor-intensive in China,a scheme for seedling pot filling and placing was proposed,and a self-propelled citr...In order to address the problem of citrus seedling pot filling and transporting which is time-consuming and labor-intensive in China,a scheme for seedling pot filling and placing was proposed,and a self-propelled citrus seedling pot filling and placing machine was designed which can fill and place 48 pots at one time.Firstly,the rotary hopper door mechanism was designed,the movement of the hopper door was analyzed,and the connection between the opening size and the movement time of the hopper door was determined.Then,the transmission system of the machine was designed,the power consumption of the hopper movement and substrate stirring were calculated,and the power requirement of the transmission system was determined.The lifting structure of the seedling pots frame was analyzed,the size of the flipping structure of the cover plate was calculated,and the seedling pots frame was designed.After that,the substrate flow rate curve was measured through the substrate flow rate experiments,and the hopper-controlled movement speed was calculated.Furthermore,the experimental prototype was manufactured and tested.The test results indicate that the filling number of pots was 48 one time,the filling time was 30 s,and the seedling pots were fully filled and placed in order.The average filling mass of the seedling pots was 2.23 kg,and the average mass variation coefficient was 2.7%.The substrate mass which is scraped out is 0.81 kg,accounting for 0.76%of the total filling mass at one time.This designed machine had a reasonable structure and high filling efficiency.The reseach can provide a reference for the development and optimization of the citrus seedling pots filling and transporting machine.展开更多
In 2025,the 22nd China-ASEAN Expo(CAEXPO)is bringing the spotlight to artificial intelligence(AI),placing enterprises at the center of engagement,and supporting development of a closer China-ASEAN community with a sha...In 2025,the 22nd China-ASEAN Expo(CAEXPO)is bringing the spotlight to artificial intelligence(AI),placing enterprises at the center of engagement,and supporting development of a closer China-ASEAN community with a shared future.展开更多
悦读·明其义Discovering the charm of travel发现旅行的魅力Travel is one of the most enjoyable experiences one can have.It not only allows us to explore new places but also helps us understand different cultures and...悦读·明其义Discovering the charm of travel发现旅行的魅力Travel is one of the most enjoyable experiences one can have.It not only allows us to explore new places but also helps us understand different cultures and traditions.Whether you are a backpacker or a tourist who prefers comfort,there is always something special waiting to be discovered.展开更多
Correction to:Nano-Micro Lett.(2023)15:233 https://doi.org/10.1007/s40820-023-01201-7 Following publication of the original article[1],the authors reported that the first two lines of the introduction were accidentall...Correction to:Nano-Micro Lett.(2023)15:233 https://doi.org/10.1007/s40820-023-01201-7 Following publication of the original article[1],the authors reported that the first two lines of the introduction were accidentally placed in the right-hand column of the page in the PDF,which affects the readability.展开更多
Hi, everyone! I'd like to tell you something about my dream home. It is in a quiet place far away from the city.It's a big house with two floors. On the ground floor, there is a bright kitchen and a dining roo...Hi, everyone! I'd like to tell you something about my dream home. It is in a quiet place far away from the city.It's a big house with two floors. On the ground floor, there is a bright kitchen and a dining room. We usually have nice meal(1) there. On the first floor, there are three bedrooms and a study. It's really nice to have a bedroom of my own.展开更多
Hello!My name is Feng Zhengning.Today,I want to tell you about my hometownHenan Province.Henan is a province in China.It is a large and beautiful place with a long history.There are many famous places to visit.
Chic Beijing:An Insider’s Guide to Unique New Places Compiled by Beijing Radio and Television Station Price:RMB 138 Paperback,307 pages Published by Foreign Languages Press&Beijing Publishing Group If you’re pla...Chic Beijing:An Insider’s Guide to Unique New Places Compiled by Beijing Radio and Television Station Price:RMB 138 Paperback,307 pages Published by Foreign Languages Press&Beijing Publishing Group If you’re planning a trip to Beijing,prepare to be swept up in a living mosaic–more than 3,000 years of history,vibrant contemporary culture,and skyline-defining architecture all fusing and flowing across a vast canvas.This book,Chic Beijing:An Insider’s Guide to Unique New Places,allows readers to take a breathtaking journey through Beijing,the majestic metropolitan capital of China.It also unlocks doors that usually stay closed:rooftop gardens overlooking palace rooftops,micro-galleries tucked into 300-year-old courtyards,and cocktail labs where baijiu meets coffee.展开更多
This study explores the impact of perceived value,awe,and place attachment on tourists'environmentally responsible behavior(ERB)in desert tourism contexts,using the Singing Sands Mountain and Crescent Spring sceni...This study explores the impact of perceived value,awe,and place attachment on tourists'environmentally responsible behavior(ERB)in desert tourism contexts,using the Singing Sands Mountain and Crescent Spring scenic area in Dunhuang,China as a case study.Data were collected from 315 tourists using a structured questionnaire and analyzed through a structural equation model.Results show that perceived value and awe significantly influence ERB both directly and indirectly via place attachment.Specifically,perceived value has a stronger direct effect on ERB compared to awe,highlighting the importance of tourists'overall evaluation of the destination in promoting sustainable behaviors.The mediating role of place attachment underscores the significance of emotional connections to the environment in fostering ERB.These findings provide valuable insights for sustainable tourism management in fragile desert ecosystems.The study also highlights the importance of enhancing perceived value through high-quality services and leveraging awe-inspiring experiences to promote sustainable behaviors.展开更多
In the Visual Place Recognition(VPR)task,existing research has leveraged large-scale pre-trained models to improve the performance of place recognition.However,when there are significant environmental differences betw...In the Visual Place Recognition(VPR)task,existing research has leveraged large-scale pre-trained models to improve the performance of place recognition.However,when there are significant environmental differences between query images and reference images,a large number of ineffective local features will interfere with the extraction of key landmark features,leading to the retrieval of visually similar but geographically different images.To address this perceptual aliasing problem caused by environmental condition changes,we propose a novel Visual Place Recognition method with Cross-Environment Robust Feature Enhancement(CerfeVPR).This method uses the GAN network to generate similar images of the original images under different environmental conditions,thereby enhancing the learning of robust features of the original images.This enables the global descriptor to effectively ignore appearance changes caused by environmental factors such as seasons and lighting,showing better place recognition accuracy than other methods.Meanwhile,we introduce a large kernel convolution adapter to fine tune the pre-trained model,obtaining a better image feature representation for subsequent robust feature learning.Then,we process the information of different local regions in the general features through a 3-layer pyramid scene parsing network and fuse it with a tag that retains global information to construct a multi-dimensional image feature representation.Based on this,we use the fused features of similar images to drive the robust feature learning of the original images and complete the feature matching between query images and retrieved images.Experiments on multiple commonly used datasets show that our method exhibits excellent performance.On average,CerfeVPR achieves the highest results,with all Recall@N values exceeding 90%.In particular,on the highly challenging Nordland dataset,the R@1 metric is improved by 4.6%,significantly outperforming other methods,which fully verifies the superiority of CerfeVPR in visual place recognition under complex environments.展开更多
Urban and peri-urban forests and trees play an important role by providing ecosystem services. Vegetation in sacred and cult places is among the useful forests and trees, but their characteristics are not well-documen...Urban and peri-urban forests and trees play an important role by providing ecosystem services. Vegetation in sacred and cult places is among the useful forests and trees, but their characteristics are not well-documented. It’s necessary to assess the potential of biodiversity conservation in sacred and cult places. This research aimed to enhance knowledge of the woody diversity in cult places in Ziguinchor. To achieve this, woody vegetation surveys were conducted to determine floristic composition and, diversity and structural parameters of woody vegetation. A total of 89 species belonging to 71 genera and 33 families were recorded, Fabaceae and Moraceae dominated in cemeteries and parishes, while Arecaceae and Euphorbiaceae were prevalent in mosques. Tree diversity varied according to cult places. Parishes recorded significatively higher diversity (2.2 ± 0.18) than cemeteries (1.59 ± 0.13) and mosques (1.07 ± 0.36). Cult places inflenced significatly the structural parameters. Tree density was higher in cemeteries (482.26 ± 302.71 indiv/ha) compared to parishes (197.61 ± 67.14 indiv/ha) and mosques (32.34 ± 4.89 indiv/ha). Mosques were characterized by higher canopy cover (25.43 ± 11.65 m2/ha), larger (83.72 ± 20.09 cm) and taller (16.28 ± 1.28 m) trees. Natural regeneration was also strongest in cemeteries (91.69% ± 3.715%), followed by parishes (62.22% ± 8.56%) and mosques (38.82% ± 14.5%). The cult places play an important ecological role in biodiversity conservation in urban and peri-urban areas.展开更多
Current gas well decline analysis under boundary-dominated flow(BDF)is largely based on the Arps'empirical hyperbolic decline model and the analytical type curve tools associated with pseudo-functions.Due to the n...Current gas well decline analysis under boundary-dominated flow(BDF)is largely based on the Arps'empirical hyperbolic decline model and the analytical type curve tools associated with pseudo-functions.Due to the nonlinear flow behavior of natural gas,these analysis methods generally require iterative calculations.In this study,the dimensionless gas rate(qg/qgi)is introduced,and an explicit method to determine the average reservoir pressure and the original gas in place(OGIP)for a volumetric gas reservoir is proposed.We show that the dimensionless gas rate in the BDF is only the function of the gas PVT parameters and reservoir pressure.Step-by-step analysis procedures are presented that enable explicit and straightforward estimation of average reservoir pressure and OGIP by straight-line analysis.Compared with current techniques,this methodology avoids the iterative calculation of pseudo-time and pseudo-pressure functions,lowers the multiplicity of type curve analysis,and is applicable in different production situations(constant/variable gas flow rate,constant/variable bottom-hole pressure)with a broad range of applications and ease of use.Reservoir numerical simulation and field examples are thoroughly discussed to highlight the capabilities of the proposed approach.展开更多
With China’s rapidly aging population and the growing preference for aging in place,digital monitoring technologies have emerged as potential tools to support older adults in managing their activities of daily living...With China’s rapidly aging population and the growing preference for aging in place,digital monitoring technologies have emerged as potential tools to support older adults in managing their activities of daily living(ADLs).This study explores the perceptions and acceptance of these technologies among elderly individuals living alone and their informal caregivers(ICs)in Nanshan District,Shenzhen.Grounded in the Unified Theory of Acceptance and Use of Technology(UTAUT),the study employed semi-structured and photo-elicitation interviews to analyze how performance expectancy,effort expectancy,social influence,and facilitating conditions shape technology adoption.The findings reveal clear intergenerational differences:caregivers show higher acceptance and a better understanding of the benefits and functionalities of wearable and environmental monitoring devices,while older adults often express skepticism due to concerns over privacy,usability,and cost.Many elderly participants also cite discomfort,technical complexity,and lack of training as barriers to adoption.Despite these obstacles,both groups acknowledge the potential safety and health benefits of such technologies.The study highlights the need for privacy-by-design features,customized user interfaces,and enhanced digital literacy programs tailored to both elderly users and their caregivers.The research contributes to a sociotechnical understanding of aging-in-place technologies in China and provides actionable insights for developers,policymakers,and healthcare practitioners aiming to enhance home-based elder care.展开更多
Visual Place Recognition(VPR)technology aims to use visual information to judge the location of agents,which plays an irreplaceable role in tasks such as loop closure detection and relocation.It is well known that pre...Visual Place Recognition(VPR)technology aims to use visual information to judge the location of agents,which plays an irreplaceable role in tasks such as loop closure detection and relocation.It is well known that previous VPR algorithms emphasize the extraction and integration of general image features,while ignoring the mining of salient features that play a key role in the discrimination of VPR tasks.To this end,this paper proposes a Domain-invariant Information Extraction and Optimization Network(DIEONet)for VPR.The core of the algorithm is a newly designed Domain-invariant Information Mining Module(DIMM)and a Multi-sample Joint Triplet Loss(MJT Loss).Specifically,DIMM incorporates the interdependence between different spatial regions of the feature map in the cascaded convolutional unit group,which enhances the model’s attention to the domain-invariant static object class.MJT Loss introduces the“joint processing of multiple samples”mechanism into the original triplet loss,and adds a new distance constraint term for“positive and negative”samples,so that the model can avoid falling into local optimum during training.We demonstrate the effectiveness of our algorithm by conducting extensive experiments on several authoritative benchmarks.In particular,the proposed method achieves the best performance on the TokyoTM dataset with a Recall@1 metric of 92.89%.展开更多
韩素音国际翻译大赛于1989年创办,是中国翻译界组织时间最长、规模最大、影响最广的翻译大赛,并受到全国乃至海外青年翻译爱好者的欢迎和认可。第37届韩素音翻译大赛的英译汉竞赛原文是“Scent Makes a Place”,汉译英竞赛原文是“中华...韩素音国际翻译大赛于1989年创办,是中国翻译界组织时间最长、规模最大、影响最广的翻译大赛,并受到全国乃至海外青年翻译爱好者的欢迎和认可。第37届韩素音翻译大赛的英译汉竞赛原文是“Scent Makes a Place”,汉译英竞赛原文是“中华优秀传统文化的生命力”。本文以语义翻译与交际翻译理论为基础,选择“第37届韩素音翻译大赛”汉英与英汉竞赛原文为研究对象,从词汇层面、句法层面和语篇层面三个维度出发,探讨第37届韩素音翻译大赛的翻译过程。此外,本研究基于语义翻译与交际翻译理论的核心理念,探索这些原则在翻译实践中的实际应用,并在其中涉及了多种翻译方法,例如直译、意译以及增译、减译等。经过深入研究,为了更好地翻译出竞赛的文本,需要在语义上要注重原文的形式和结构,强调对原作者创作意图的忠实再现。在交际上,唤起读者心理或情绪方面的效果,同时满足中文读者的阅读偏好。 .展开更多
Objective To investigate whether environmental cues associated with different properties of morphine could regulate the extracellular levels of glutamate and y-aminobutyric acid （GABA） in the hippocampal ventral sub...Objective To investigate whether environmental cues associated with different properties of morphine could regulate the extracellular levels of glutamate and y-aminobutyric acid （GABA） in the hippocampal ventral subiculum, which play a critical role in the reinstatement of drug-seeking behavior induced by environmental cues. Methods Conditioning place preference （CPP） and conditioning place aversion （CPA） models were used to establish environment associated with rewarding and aversive properties of morphine respectively. Microdialysis and high performance liquid chromatography were used to measure the extracelluar level of glutamate and GABA in the ventral subiculum under these environmental cues. Results Exposure to the environmental cues associated with rewarding properties of morphine resulted in a decrease （approximately 11%） of extracellular level of GABA in ventral subiculum, and exposure to the environmental cues associated with aversive properties of morphine resulted in an increase （approximately 230%） of extracellular level of glutamate in ventral subiculum. Conclusion Environmental cues associated with different properties of morphine modulate the release of distinct neurotransmitters in the hippocampal ventral subiculum possibly through different neural circuit.展开更多
为了提高FPGA（Field Programmable Gate Array）的布通率并优化电路的连线长度,在模拟退火算法的基础上,该文提出一种新的FPGA布局算法。该算法在不同的温度区间采用不同的评价函数,高温阶段采用半周长法进行快速优化布局,低温阶段在...为了提高FPGA（Field Programmable Gate Array）的布通率并优化电路的连线长度,在模拟退火算法的基础上,该文提出一种新的FPGA布局算法。该算法在不同的温度区间采用不同的评价函数,高温阶段采用半周长法进行快速优化布局,低温阶段在评价函数中加入变量因子并进行适度的回火处理,以此来优化布局。实验表明,该算法提高了布通率,优化了连线长度,与最具代表性的VPR（Versatile Place and Route）布局算法相比布线通道宽度提高了近6%,电路总的连线长度降低了4-23%。展开更多
文摘The study introduced the development of stone elements in Italian Renaissance Garden and Chinese classical garden, analyzed the stonework of Renaissance Garden and the placing stone technique of Chinese classical garden from different angles and made a comparative analysis of the two from the aesthetic thought, stone selection and technique.
文摘1.The second stage of the LM-3 launch vehicle being tested2.Mobilization meeting for the launch of APstar-1A being held3.Acclaiming the precise orbital insertion of
基金supported by the Chongqing Research and Development Project‘Key Technology Research and Equipment Development of Intelligent Management for Citrus Seedling Plant’(cstc2019jscx-gksbX0095).
文摘In order to address the problem of citrus seedling pot filling and transporting which is time-consuming and labor-intensive in China,a scheme for seedling pot filling and placing was proposed,and a self-propelled citrus seedling pot filling and placing machine was designed which can fill and place 48 pots at one time.Firstly,the rotary hopper door mechanism was designed,the movement of the hopper door was analyzed,and the connection between the opening size and the movement time of the hopper door was determined.Then,the transmission system of the machine was designed,the power consumption of the hopper movement and substrate stirring were calculated,and the power requirement of the transmission system was determined.The lifting structure of the seedling pots frame was analyzed,the size of the flipping structure of the cover plate was calculated,and the seedling pots frame was designed.After that,the substrate flow rate curve was measured through the substrate flow rate experiments,and the hopper-controlled movement speed was calculated.Furthermore,the experimental prototype was manufactured and tested.The test results indicate that the filling number of pots was 48 one time,the filling time was 30 s,and the seedling pots were fully filled and placed in order.The average filling mass of the seedling pots was 2.23 kg,and the average mass variation coefficient was 2.7%.The substrate mass which is scraped out is 0.81 kg,accounting for 0.76%of the total filling mass at one time.This designed machine had a reasonable structure and high filling efficiency.The reseach can provide a reference for the development and optimization of the citrus seedling pots filling and transporting machine.
文摘In 2025,the 22nd China-ASEAN Expo(CAEXPO)is bringing the spotlight to artificial intelligence(AI),placing enterprises at the center of engagement,and supporting development of a closer China-ASEAN community with a shared future.
文摘悦读·明其义Discovering the charm of travel发现旅行的魅力Travel is one of the most enjoyable experiences one can have.It not only allows us to explore new places but also helps us understand different cultures and traditions.Whether you are a backpacker or a tourist who prefers comfort,there is always something special waiting to be discovered.
文摘Correction to:Nano-Micro Lett.(2023)15:233 https://doi.org/10.1007/s40820-023-01201-7 Following publication of the original article[1],the authors reported that the first two lines of the introduction were accidentally placed in the right-hand column of the page in the PDF,which affects the readability.
文摘Hi, everyone! I'd like to tell you something about my dream home. It is in a quiet place far away from the city.It's a big house with two floors. On the ground floor, there is a bright kitchen and a dining room. We usually have nice meal(1) there. On the first floor, there are three bedrooms and a study. It's really nice to have a bedroom of my own.
文摘Hello!My name is Feng Zhengning.Today,I want to tell you about my hometownHenan Province.Henan is a province in China.It is a large and beautiful place with a long history.There are many famous places to visit.
文摘Chic Beijing:An Insider’s Guide to Unique New Places Compiled by Beijing Radio and Television Station Price:RMB 138 Paperback,307 pages Published by Foreign Languages Press&Beijing Publishing Group If you’re planning a trip to Beijing,prepare to be swept up in a living mosaic–more than 3,000 years of history,vibrant contemporary culture,and skyline-defining architecture all fusing and flowing across a vast canvas.This book,Chic Beijing:An Insider’s Guide to Unique New Places,allows readers to take a breathtaking journey through Beijing,the majestic metropolitan capital of China.It also unlocks doors that usually stay closed:rooftop gardens overlooking palace rooftops,micro-galleries tucked into 300-year-old courtyards,and cocktail labs where baijiu meets coffee.
基金financed by 2024 Gansu Province College Teachers'Innovation Fund Project(2024B-051)Northwest Normal University Young Teachers'Research Ability Enhancement Program Project(NWNU-LKQN2019-25)Grant number Gansu Provincial Social Science Planning Youth Project"Research on the Construction of Tourism Safety Guarantee System for Scenic Spots in Gansu Province"(2021QN008).
文摘This study explores the impact of perceived value,awe,and place attachment on tourists'environmentally responsible behavior(ERB)in desert tourism contexts,using the Singing Sands Mountain and Crescent Spring scenic area in Dunhuang,China as a case study.Data were collected from 315 tourists using a structured questionnaire and analyzed through a structural equation model.Results show that perceived value and awe significantly influence ERB both directly and indirectly via place attachment.Specifically,perceived value has a stronger direct effect on ERB compared to awe,highlighting the importance of tourists'overall evaluation of the destination in promoting sustainable behaviors.The mediating role of place attachment underscores the significance of emotional connections to the environment in fostering ERB.These findings provide valuable insights for sustainable tourism management in fragile desert ecosystems.The study also highlights the importance of enhancing perceived value through high-quality services and leveraging awe-inspiring experiences to promote sustainable behaviors.
基金supported by Postgraduate Scientific Research Innovation Project of Hunan Province CX20230915National Natural Science Foundation of China under Grant 62472440.
文摘In the Visual Place Recognition(VPR)task,existing research has leveraged large-scale pre-trained models to improve the performance of place recognition.However,when there are significant environmental differences between query images and reference images,a large number of ineffective local features will interfere with the extraction of key landmark features,leading to the retrieval of visually similar but geographically different images.To address this perceptual aliasing problem caused by environmental condition changes,we propose a novel Visual Place Recognition method with Cross-Environment Robust Feature Enhancement(CerfeVPR).This method uses the GAN network to generate similar images of the original images under different environmental conditions,thereby enhancing the learning of robust features of the original images.This enables the global descriptor to effectively ignore appearance changes caused by environmental factors such as seasons and lighting,showing better place recognition accuracy than other methods.Meanwhile,we introduce a large kernel convolution adapter to fine tune the pre-trained model,obtaining a better image feature representation for subsequent robust feature learning.Then,we process the information of different local regions in the general features through a 3-layer pyramid scene parsing network and fuse it with a tag that retains global information to construct a multi-dimensional image feature representation.Based on this,we use the fused features of similar images to drive the robust feature learning of the original images and complete the feature matching between query images and retrieved images.Experiments on multiple commonly used datasets show that our method exhibits excellent performance.On average,CerfeVPR achieves the highest results,with all Recall@N values exceeding 90%.In particular,on the highly challenging Nordland dataset,the R@1 metric is improved by 4.6%,significantly outperforming other methods,which fully verifies the superiority of CerfeVPR in visual place recognition under complex environments.
文摘Urban and peri-urban forests and trees play an important role by providing ecosystem services. Vegetation in sacred and cult places is among the useful forests and trees, but their characteristics are not well-documented. It’s necessary to assess the potential of biodiversity conservation in sacred and cult places. This research aimed to enhance knowledge of the woody diversity in cult places in Ziguinchor. To achieve this, woody vegetation surveys were conducted to determine floristic composition and, diversity and structural parameters of woody vegetation. A total of 89 species belonging to 71 genera and 33 families were recorded, Fabaceae and Moraceae dominated in cemeteries and parishes, while Arecaceae and Euphorbiaceae were prevalent in mosques. Tree diversity varied according to cult places. Parishes recorded significatively higher diversity (2.2 ± 0.18) than cemeteries (1.59 ± 0.13) and mosques (1.07 ± 0.36). Cult places inflenced significatly the structural parameters. Tree density was higher in cemeteries (482.26 ± 302.71 indiv/ha) compared to parishes (197.61 ± 67.14 indiv/ha) and mosques (32.34 ± 4.89 indiv/ha). Mosques were characterized by higher canopy cover (25.43 ± 11.65 m2/ha), larger (83.72 ± 20.09 cm) and taller (16.28 ± 1.28 m) trees. Natural regeneration was also strongest in cemeteries (91.69% ± 3.715%), followed by parishes (62.22% ± 8.56%) and mosques (38.82% ± 14.5%). The cult places play an important ecological role in biodiversity conservation in urban and peri-urban areas.
基金supported by the Young Elite Scientist Sponsorship Program by Beijing Association for Science and Technology,China(No.BYESS2023262)the Science Foundation of China University of Petroleum(Beijing),China(No.2462022BJRC004).
文摘Current gas well decline analysis under boundary-dominated flow(BDF)is largely based on the Arps'empirical hyperbolic decline model and the analytical type curve tools associated with pseudo-functions.Due to the nonlinear flow behavior of natural gas,these analysis methods generally require iterative calculations.In this study,the dimensionless gas rate(qg/qgi)is introduced,and an explicit method to determine the average reservoir pressure and the original gas in place(OGIP)for a volumetric gas reservoir is proposed.We show that the dimensionless gas rate in the BDF is only the function of the gas PVT parameters and reservoir pressure.Step-by-step analysis procedures are presented that enable explicit and straightforward estimation of average reservoir pressure and OGIP by straight-line analysis.Compared with current techniques,this methodology avoids the iterative calculation of pseudo-time and pseudo-pressure functions,lowers the multiplicity of type curve analysis,and is applicable in different production situations(constant/variable gas flow rate,constant/variable bottom-hole pressure)with a broad range of applications and ease of use.Reservoir numerical simulation and field examples are thoroughly discussed to highlight the capabilities of the proposed approach.
文摘With China’s rapidly aging population and the growing preference for aging in place,digital monitoring technologies have emerged as potential tools to support older adults in managing their activities of daily living(ADLs).This study explores the perceptions and acceptance of these technologies among elderly individuals living alone and their informal caregivers(ICs)in Nanshan District,Shenzhen.Grounded in the Unified Theory of Acceptance and Use of Technology(UTAUT),the study employed semi-structured and photo-elicitation interviews to analyze how performance expectancy,effort expectancy,social influence,and facilitating conditions shape technology adoption.The findings reveal clear intergenerational differences:caregivers show higher acceptance and a better understanding of the benefits and functionalities of wearable and environmental monitoring devices,while older adults often express skepticism due to concerns over privacy,usability,and cost.Many elderly participants also cite discomfort,technical complexity,and lack of training as barriers to adoption.Despite these obstacles,both groups acknowledge the potential safety and health benefits of such technologies.The study highlights the need for privacy-by-design features,customized user interfaces,and enhanced digital literacy programs tailored to both elderly users and their caregivers.The research contributes to a sociotechnical understanding of aging-in-place technologies in China and provides actionable insights for developers,policymakers,and healthcare practitioners aiming to enhance home-based elder care.
基金supported by the Natural Science Foundation of Xinjiang Uygur Autonomous Region under grant number 2022D01B186.
文摘Visual Place Recognition(VPR)technology aims to use visual information to judge the location of agents,which plays an irreplaceable role in tasks such as loop closure detection and relocation.It is well known that previous VPR algorithms emphasize the extraction and integration of general image features,while ignoring the mining of salient features that play a key role in the discrimination of VPR tasks.To this end,this paper proposes a Domain-invariant Information Extraction and Optimization Network(DIEONet)for VPR.The core of the algorithm is a newly designed Domain-invariant Information Mining Module(DIMM)and a Multi-sample Joint Triplet Loss(MJT Loss).Specifically,DIMM incorporates the interdependence between different spatial regions of the feature map in the cascaded convolutional unit group,which enhances the model’s attention to the domain-invariant static object class.MJT Loss introduces the“joint processing of multiple samples”mechanism into the original triplet loss,and adds a new distance constraint term for“positive and negative”samples,so that the model can avoid falling into local optimum during training.We demonstrate the effectiveness of our algorithm by conducting extensive experiments on several authoritative benchmarks.In particular,the proposed method achieves the best performance on the TokyoTM dataset with a Recall@1 metric of 92.89%.
文摘韩素音国际翻译大赛于1989年创办,是中国翻译界组织时间最长、规模最大、影响最广的翻译大赛,并受到全国乃至海外青年翻译爱好者的欢迎和认可。第37届韩素音翻译大赛的英译汉竞赛原文是“Scent Makes a Place”,汉译英竞赛原文是“中华优秀传统文化的生命力”。本文以语义翻译与交际翻译理论为基础,选择“第37届韩素音翻译大赛”汉英与英汉竞赛原文为研究对象,从词汇层面、句法层面和语篇层面三个维度出发,探讨第37届韩素音翻译大赛的翻译过程。此外,本研究基于语义翻译与交际翻译理论的核心理念,探索这些原则在翻译实践中的实际应用,并在其中涉及了多种翻译方法,例如直译、意译以及增译、减译等。经过深入研究,为了更好地翻译出竞赛的文本,需要在语义上要注重原文的形式和结构,强调对原作者创作意图的忠实再现。在交际上,唤起读者心理或情绪方面的效果,同时满足中文读者的阅读偏好。 .
基金supported by the National Natural Science Foundation of China(No.30230130 and No.30400129)the Ministry of Science and Technology of China(No.2003CB515405,No.2005CB522406)+1 种基金the Program for Changjiang Scholars and Innovative Research Team of Ministry of Education of ChinaShanghai Municipal Commission for Science and Technology(No.06JC14008).
文摘Objective To investigate whether environmental cues associated with different properties of morphine could regulate the extracellular levels of glutamate and y-aminobutyric acid （GABA） in the hippocampal ventral subiculum, which play a critical role in the reinstatement of drug-seeking behavior induced by environmental cues. Methods Conditioning place preference （CPP） and conditioning place aversion （CPA） models were used to establish environment associated with rewarding and aversive properties of morphine respectively. Microdialysis and high performance liquid chromatography were used to measure the extracelluar level of glutamate and GABA in the ventral subiculum under these environmental cues. Results Exposure to the environmental cues associated with rewarding properties of morphine resulted in a decrease （approximately 11%） of extracellular level of GABA in ventral subiculum, and exposure to the environmental cues associated with aversive properties of morphine resulted in an increase （approximately 230%） of extracellular level of glutamate in ventral subiculum. Conclusion Environmental cues associated with different properties of morphine modulate the release of distinct neurotransmitters in the hippocampal ventral subiculum possibly through different neural circuit.
文摘为了提高FPGA（Field Programmable Gate Array）的布通率并优化电路的连线长度,在模拟退火算法的基础上,该文提出一种新的FPGA布局算法。该算法在不同的温度区间采用不同的评价函数,高温阶段采用半周长法进行快速优化布局,低温阶段在评价函数中加入变量因子并进行适度的回火处理,以此来优化布局。实验表明,该算法提高了布通率,优化了连线长度,与最具代表性的VPR（Versatile Place and Route）布局算法相比布线通道宽度提高了近6%,电路总的连线长度降低了4-23%。
