Resource Type

Journal Article 587

Year

2023 53

2022 42

2021 48

2020 37

2019 32

2018 29

2017 43

2016 27

2015 22

2014 15

2013 16

2012 18

2011 25

2010 26

2009 35

2008 20

2007 32

2006 11

2005 8

2004 8

open ︾

Keywords

prediction 20

Machine learning 11

Artificial intelligence 5

development strategy 5

Wenchuan Earthquake 4

compressive strength 4

concrete 4

earthquake 4

earthquake prediction 4

life prediction 4

machine learning 4

nonlinear 4

ANN 3

ANOVA 3

Deep learning 3

artificial neural network 3

mid-long term 3

reliability prediction 3

ANFIS 2

open ︾

Search scope:

排序： Display mode:

An End to End Modulating Transmission Scheme With Good Robustness Against the RPE-LTP Vocoder

Chen Liquan,Hu Aiqun,Xu Qing and Yang Xiaohui

Strategic Study of CAE 2007, Volume 9, Issue 12,   Pages 81-85

Abstract:

A novel endtoend data transmission scheme based on OFDM mechanism with good robustness against the RPE-LTP vocoder in GSM voice channel is proposed. According to the character of RPE-LTP vocoder, data are modulated to orthogonal lowfrequency sinusoidal carrier. In OFDM, the modulation is done by IFFT and the modulated signals are conformed to the time and frequency characters of RPELTP vocoder. The results of simulation show that the transmission bit rate of the proposed scheme reaches 2.4 kb/s，and the bit error rate of the scheme is lower than 0.3 %. This scheme provides a new approach for realtime secure voice data transmission over GSM system.

Keywords： vocoder     regular pulse excitedlong term prediction     OFDM     FFT    

HTML PDF Collect

Long-term prediction for hierarchical-B-picture-based coding of video with repeated shots None

Xu-guang ZUO, Lu YU

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 3,   Pages 459-470 doi: 10.1631/FITEE.1601552

Abstract: However, the long-term correlation between repeated shots has not been used.We propose a long-term prediction (LTP) scheme to use the long-term temporal correlation between correlatedThe long-term reference (LTR) frames of a source video are chosen by clustering similar shots and extractingand a modified hierarchical B-picture coding structure based on an LTR frame is introduced to support long-termtemporal prediction.

Keywords： High Efficiency Video Coding (HEVC)     Long-term temporal correlation     Long-term prediction     Hierarchical    

HTML PDF Collect

A novel hybrid model for water quality prediction based on VMD and IGOA optimized for LSTM

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 7, doi: 10.1007/s11783-023-1688-y

Abstract:

● A novel VMD-IGOA-LSTM model has proposed for the prediction of

Keywords： Water quality prediction     Grasshopper optimization algorithm     Variational mode decomposition     Long short-term    

HTML PDF Collect

Stabilization-based soil remediation should consider long-term challenges

Zhengtao Shen, Zhen Li, Daniel S. Alessi

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-018-1028-9

Abstract: However, there are emerging challenges regarding the long-term performance of the technology, which maystem from a research gap regarding the development of accurate, quantitative laboratory simulations of long-termTherefore, field trials coupled with long-term monitoring are critical to further verify conditions underSustainability is also an important factor affecting the long-term stability of site remediation.

Keywords： Stabilization     Soil remediation     Long-term     Trace metals    

HTML PDF Collect

Long-term exposure to air pollution and cerebrovascular disease: findings from Beijing Health Management

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 7, doi: 10.1007/s11783-023-1684-2

Abstract:

● This study explored the long-term association by double robust

Keywords： Air pollution     Cerebrovascular disease     Incidence     Long-term exposure     Doubly robust additive model    

HTML PDF Collect

A perspective of “Nuclear Hot Spring” for long-term sustainable economy of the world

Yingzhong LU

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 349-357 doi: 10.1007/s11708-011-0168-4

Abstract: The rapid growth of human economy in the late 20th century gave rise to great concern over sustainability of the world. A pessimistic “Full World Model” forecasts that human economy could not develop further. The nuclear fission (and fusion later), however, could release huge amount of energy to create sufficient useful material resources and turn the said pessimistic modelinto a new optimistic “Sustainable World Model”.The dilemma of nuclear energy (Military Giant vs. Civil Dwarf) jeopardizes its performance as a “Technologic Fixer”. According to Mother Nature’s teachings, the elimination of the root-causes of the design-based risk factors could solve this problem. Recent technology break-through from inherent safety to natural safety has been made in China. The proposed full-power natural circulation “Nuclear Hot Spring (NHS)” reactor could operate solely on natural forces without complex man-made coolant circulation equipment and human-operated control systems. The cheap, unlimited supply of energy from nuclear energy could change the geopolitics forever, and finally eliminate the root-causes of most international and regional conflicts.

Keywords： natural safety reactor     full power natural circulation     sustainable world economy    

HTML PDF Collect

Effects of coarse and fine aggregates on long-term mechanical properties of sea sand recycled aggregate

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 754-772 doi: 10.1007/s11709-021-0711-2

Abstract: Typical effects of coarse and fine aggregates on the long-term properties of sea sand recycled aggregateFinally, an analytical expression is suggested to construct the long-term stress–strain curve of SSRAC

Keywords： aggregate concrete     recycled coarse aggregate replacement percentage     sea sand chloride ion content     long-term    

HTML PDF Collect

Long-term adaptive evolution of

Yong Xiao, Changye Xiao, Feng Zhao

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 1, doi: 10.1007/s11783-019-1182-8

Abstract: remains uncertain how microorganisms acquire resistance to high concentrations of pollutants during long-termS. oneidensis MR-1 is improved by acclimation, as well as a genetic understanding of the impact of long-term

Keywords： Environmental biotechnology     Acclimation     Chromate resistance     Efflux pumps     Detoxification    

HTML PDF Collect

Elucidate long-term changes of ozone in Shanghai based on an integrated machine learning method

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1738-5

Abstract:

● A novel integrated machine learning method to analyze O3 changes is proposed.

Keywords： Ozone     Integrated method     Machine learning    

HTML PDF Collect

CONCENTRATIONS AND FLUXES OF DISSOLVED NUTRIENTS IN THE YANGTZE RIVER: LONG-TERM TRENDS AND ECOLOGICAL

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4,   Pages 559-567 doi: 10.15302/J-FASE -2020344

Abstract:

Intensifying human activity in the Yangtze River basin has substantially increased nutrient concentrations in the Yangtze River Estuary, leading to degradation of the coastal environment. Analysis of nutrient determinations published over the past 50 years reveals a gradual decreasing trend in the concentrations and fluxes of dissolved silicate (DSi). However, both dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphate (DIP) concentrations have increased significantly since the 1970s. The frequency of and area covered by red tide outbreaks have increased greatly during this period, mainly due to changes in nutrient supply ratios [i.e., N/P (DIN/DIP), N/Si (DIN/DSi), P/Si (DIP/DSi)]. A strong correlation was found between the riverine DIN fluxes and the estimated DIN inputs from the major N sources, particularly fertilizers and atmospheric deposition. The data provide a comprehensive assessment of nutrients in the Yangtze River basin and their ecological impacts and indicate a potentially significant influence of atmospheric deposition on DIN loadings and fluxes.

 

Keywords： atmospheric deposition / ecological impacts / nitrogen sources / nutrients / Yangtze delta    

HTML PDF Collect

Mycophenolate mofetil or tacrolimus compared with azathioprine in long-term maintenance treatment for

Frontiers of Medicine 2022, Volume 16, Issue 5,   Pages 799-807 doi: 10.1007/s11684-021-0849-2

Abstract: Long-term maintenance therapies with MMF or TAC might have similarly low rates of renal relapse and similar

Keywords： lupus nephritis     mycophenolate mofetil     tacrolimus     maintenance therapy    

HTML PDF Collect

Sustainable Plasticulture in Chinese Agriculture: a Review of Challenges and Routes to Achieving Long-term

Frontiers of Agricultural Science and Engineering doi: 10.15302/J-FASE-2023508

Abstract:

● Macro-, micro- and nanoplastic pollution in agricultural soils threaten long-term

Keywords： circular plastics economy     crop production     food security     plastic pollution     sustainable plasticulture    

HTML PDF Collect

Physiological effects of weightlessness: countermeasure system development for a long-term Chinese manned

Linjie Wang, Zhili Li, Cheng Tan, Shujuan Liu, Jianfeng Zhang, Siyang He, Peng Zou, Weibo Liu, Yinghui Li

Frontiers of Medicine 2019, Volume 13, Issue 2,   Pages 202-212 doi: 10.1007/s11684-017-0587-7

Abstract: The Chinese space station will be built around 2020. As a national space laboratory, it will offer unique opportunities for studying the physiological effects of weightlessness and the efficacy of the countermeasures against such effects. In this paper, we described the development of countermeasure systems in the Chinese space program. To emphasize the need of the Chinese space program to implement its own program for developing countermeasures, we reviewed the literature on the negative physiological effects of weightlessness, the challenges of completing missions, the development of countermeasure devices, the establishment of countermeasure programs, and the efficacy of the countermeasure techniques in American and Russian manned spaceflights. In addition, a brief overview was provided on the Chinese research and development on countermeasures to discuss the current status and goals of the development of countermeasures against physiological problems associated with weightlessness.

Keywords： countermeasure     physiological effects of weightlessness     effect evaluation     long-term manned spaceflight    

HTML PDF Collect

Enhanced methane production during long-term UASB operation at high organic loads as enabled by the immobilized

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1505-4

Abstract:

• Fungi enable the constant UASB operation even at OLR of 25.0 kg/(m3×d).

Keywords： Anaerobic digestion     Fungi     Methane production     High OLR     Microbial community    

HTML PDF Collect

Long-term trends of fine particulate matter and chemical composition in the Pearl River Delta Economic

Xuemei WANG,Weihua CHEN,Duohong CHEN,Zhiyong WU,Qi Fan

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 53-62 doi: 10.1007/s11783-014-0728-z

Abstract: The long-term variation in PM mass concentration is analyzed.These results provide, for the first time, a better understanding of the long-term PM characteristics

Keywords： long-term trends     fine particulate matter     chemical components     Pearl River Delta Economic Zone (PRDEZ)    

HTML PDF Collect

Title Author Date Type Operation

An End to End Modulating Transmission Scheme With Good Robustness Against the RPE-LTP Vocoder

Chen Liquan,Hu Aiqun,Xu Qing and Yang Xiaohui

Journal Article

Long-term prediction for hierarchical-B-picture-based coding of video with repeated shots

Xu-guang ZUO, Lu YU

Journal Article

A novel hybrid model for water quality prediction based on VMD and IGOA optimized for LSTM

Journal Article

Stabilization-based soil remediation should consider long-term challenges

Zhengtao Shen, Zhen Li, Daniel S. Alessi

Journal Article

Long-term exposure to air pollution and cerebrovascular disease: findings from Beijing Health Management

Journal Article

A perspective of “Nuclear Hot Spring” for long-term sustainable economy of the world

Yingzhong LU

Journal Article

Effects of coarse and fine aggregates on long-term mechanical properties of sea sand recycled aggregate

Journal Article

Long-term adaptive evolution of

Yong Xiao, Changye Xiao, Feng Zhao

Journal Article

Elucidate long-term changes of ozone in Shanghai based on an integrated machine learning method

Journal Article

CONCENTRATIONS AND FLUXES OF DISSOLVED NUTRIENTS IN THE YANGTZE RIVER: LONG-TERM TRENDS AND ECOLOGICAL

Journal Article

Mycophenolate mofetil or tacrolimus compared with azathioprine in long-term maintenance treatment for

Journal Article

Sustainable Plasticulture in Chinese Agriculture: a Review of Challenges and Routes to Achieving Long-term

Journal Article

Physiological effects of weightlessness: countermeasure system development for a long-term Chinese manned

Linjie Wang, Zhili Li, Cheng Tan, Shujuan Liu, Jianfeng Zhang, Siyang He, Peng Zou, Weibo Liu, Yinghui Li

Journal Article

Enhanced methane production during long-term UASB operation at high organic loads as enabled by the immobilized

Journal Article

Long-term trends of fine particulate matter and chemical composition in the Pearl River Delta Economic

Xuemei WANG,Weihua CHEN,Duohong CHEN,Zhiyong WU,Qi Fan

Journal Article