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Spectral characteristics of plant communities from salt marshes: A case study from Chongming Dongtan, Yangtze estuary, China

ZHANG Liquan, GAO Zhanguo, Armitage Richard, Kent Martin

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 187-197 doi: 10.1007/s11783-008-0004-1

Abstract: Further work using multi-seasonal hyperspectral data might assist in solving these problems.

Keywords： Spectral     multi-seasonal hyperspectral     invasive     JR     re-analysed    

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Feature extraction of hyperspectral images for detecting immature green citrus fruit

Yongjun DING, Won Suk LEE, Minzan LI

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4,   Pages 475-484 doi: 10.15302/J-FASE-2018241

Abstract:

At an early immature growth stage of citrus, a hyperspectral camera of 369–1042 nm was employedto acquire 30 hyperspectral images in order to detect immature green fruit within citrus trees underselect 677, 804, 563, 962, and 405 nm wavebands and to construct multispectral images from the original hyperspectral

Keywords： hyperspectral     green citrus     image processing     fruit detection     precision agriculture     yield mapping    

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Optimization for operating modes based on simulation of seasonal underground thermal energy storage

ZHAO Jun, CHEN Yan, LI Xinguo

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 298-301 doi: 10.1007/s11708-008-0053-y

Abstract: A simulation was performed, which concerned the feasibility of seasonal underground thermal energy storage
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Detection of Huanglongbing (citrus greening) based on hyperspectral image analysis and PCR

Kejian WANG, Dongmei GUO, Yao ZHANG, Lie DENG, Rangjin XIE, Qiang LV, Shilai YI, Yongqiang ZHENG, Yanyan MA, Shaolan HE

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 2,   Pages 172-180 doi: 10.15302/J-FASE-2019256

Abstract: First, hyperspectral data of the upper and lower leaf surfaces were obtained, and then the polymeraseleaves, and the least squares support vector machine recognition model was established based on the leaf hyperspectralHLB-infected leaves, and the HLB PCR-positive leaves could be distinguished from the healthy by the hyperspectralnondestructive detection of HLB-infected leaves without symptoms is possible, which provides a basis for the hyperspectral

Keywords： citrus     HLB     hyperspectral     identification     PCR    

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Numerical simulation of underground seasonal cold energy storage for a 10 MW solar thermal power plant

Zulkarnain ABBAS, Yong LI, Ruzhu WANG

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 328-344 doi: 10.1007/s11708-020-0676-1

Abstract: This paper aims to explore an efficient, cost-effective, and water-saving seasonal cold energy storageThe proposed seasonal cooling mechanism is designed for the areas under typical weather conditions toThe proposed seasonal cooling system is capable of enhancing the efficiency of a solar thermal power

Keywords： seasonal cold energy storage     borehole heat exchangers     typical meteorological data     TRNSYS     condenser cooling    

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Non-negativematrix factorization based unmixing for principal component transformed hyperspectral data

Xiu-rui GENG,Lu-yan JI,Kang SUN

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 5,   Pages 403-412 doi: 10.1631/FITEE.1600028

Abstract: Non-negative matrix factorization (NMF) has been widely used in mixture analysis for hyperspectral remotespectral unmixing analysis, however, it has two main shortcomings: (1) since the dimensionality of hyperspectral

Keywords： Non-negative matrix factorization (NMF)     Principal component analysis (PCA)     Endmember     Hyperspectral    

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Emerging theories and technologies on computationalimaging Review

Xue-mei HU, Jia-min WU, Jin-li SUO, Qiong-hai DAI

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1207-1221 doi: 10.1631/FITEE.1700211

Abstract: Computational imaging describes the whole imaging process fromthe perspective of light transport and information transmission, featurestraditional optical computing capabilities, and assists in breakingthrough the limitations of visual information recording. Progressin computational imaging promotes the development of diverse basicand applied disciplines. In this review, we provide an overview ofthe fundamental principles and methods in computational imaging, thehistory of this field, and the important roles that it plays in thedevelopment of science. We review the most recent and promising advancesin computational imaging, from the perspective of different dimensionsof visual signals, including spatial dimension, temporal dimension,angular dimension, spectral dimension, and phase. We also discusssome topics worth studying for future developments in computationalimaging.

Keywords： Computational imaging     Multi-scale and multi-dimensional     Super-resolution     Femto-photography     3D reconstruction     Hyperspectral imaging    

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Seasonal and treatment-process variations in invertebrates in drinking water treatment plants

Zhiling Wu, Xianchun Tang, Hongbin Chen

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1354-6

Abstract: Abstract • Seasonal and treatment-process variations in invertebrates in a DWTP were analyzed. • Theeach treatment stage in a drinking water treatment plant between May 2015 and April 2016 and analyzed seasonal

Keywords： Invertebrates     Drinking water     Seasonal variations     Treatment process    

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Seasonal variation of nitrogen and phosphorus in Xiaojiang River—A tributary of the Three Gorges Reservoir

Zhe LI , Jinsong GUO , Man LONG , Fang FANG , Jinping SHENG , Hong ZHOU ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 334-340 doi: 10.1007/s11783-009-0039-y

Abstract: A yearlong monitoring program in the backwater area of Xiaojiang River (XBA) was launched in order to investigate the eutrophication of backwater areas in tributaries of the Yangtze River in the Three Gorges Reservoir (TGR) in China, starting after the impoundment water level of the TGR reached 156 m. From March 2007 to March 2008, the average concentration of total nitrogen (TN) and total phosphorus (TP) were (1553 ± 484) μg·L and (62 ± 31) μg·L, respectively. The mean value of chlorophyll was (9.07 ± 0.91) μg·L. The trophic level of XBA was meso-eutrophic, while the general nutrient limitation was phosphorus. The results indicated that XBA has a strong ability to purify itself and has non-point source pollution from terrestrial runoff. The variation of TN/TP ratio was caused by a variation in TN rather than in TP when TN/TP<22. N-fixation from cyanobacteria occurred and became an important process in overcoming the nitrogen deficit under a low TN/TP ratio. When TN/TP ≥ 22, the variation of TP affected the TN/TP ratio more significantly than TN. The increase of TP in XBA was caused mainly by particulate phosphorus, which could originate from a non-point source as adsorptive inorganic forms after heavy rainfall and surface runoff. An increase in the river’s flow could also contribute to an unstable environment for the growth of phytoplankton.

Keywords： Three Gorges Reservoir     eutrophication     nitrogen     phosphorus     seasonal variation     chlorophyll    

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Spatial and seasonal variations in bacterial communities of the Yellow Sea by T-RFLP analysis

Hongyuan WANG, Xiaolu JIANG, Ya HE, Huashi GUAN

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 2,   Pages 194-199 doi: 10.1007/s11783-009-0018-3

Abstract: mud flat shore, and artificial harbor) at the Yellow Sea were chosen to investigate the spatial and seasonalThe MDA analysis results of T-RFLP profiles coming from I and I both exhibited a significant seasonal

Keywords： terminal restriction fragment length polymorphism (T-RFLP)     bacterial community structure     marine microbial diversity     HhaI     MspI    

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Using balance of seasonal herbage supply and demand to inform sustainable grassland management on the

Xinquan ZHAO, Liang ZHAO, Qi LI, Huai CHEN, Huakun ZHOU, Shixiao XU, Quanmin DONG, Gaolin WU, Yixin HE

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 1,   Pages 1-8 doi: 10.15302/J-FASE-2018203

Abstract: production on the QTP is characterized by imbalance in both quality and quantity between livestock seasonal

Keywords： ecosystem function     grassland degradation     grassland management     integrated rangeland-cropland-livestock production system     Qinghai–Tibetan Plateau    

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Characterization and seasonal distribution of microplastics in the nearshore sediments of the south-east

K. Dhineka , M. Sambandam , S. K. Sivadas , T. Kaviarasan , Umakanta Pradhan , Mehmuna Begum , Pravakar Mishra , M. V. Ramana Murthy

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 1,   Pages 10-10 doi: 10.1007/s11783-021-1444-0

Abstract: environment and dearth of baseline data, a study was conducted on the abundance, characterization, and seasonal
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Seasonal variations of transport pathways andpotential sources of PM

Yuan Chen, Shaodong Xie, Bin Luo

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 1, doi: 10.1007/s11783-018-1009-z

Abstract: Seasonal pattern of transport pathways and potential sourcesof PM in Chengdu during 2012–2013were investigated

Keywords： Transport pathway     Backwardtrajectory     Clustering analysis     Potential source     Chengdu    

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High-resolution spectral video acquisition Review

Lin-sen CHEN, Tao YUE, Xun CAO, Zhan MA, David J. BRADY

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1250-1260 doi: 10.1631/FITEE.1700098

Abstract: Compared with conventional cameras, spectral imagers providemany more features in the spectral domain. They have been used invarious fields such as material identification, remote sensing, precisionagriculture, and surveillance. Traditional imaging spectrometers usegenerally scanning systems. They cannot meet the demands of dynamicscenarios. This limits the practical applications for spectral imaging.Recently, with the rapid development in computational photographytheory and semiconductor techniques, spectral video acquisition hasbecome feasible. This paper aims to offer a review of the state-of-the-artspectral imaging technologies, especially those capable of capturingspectral videos. Finally, we evaluate the performances of the existingspectral acquisition systems and discuss the trends for future work.

Keywords： Multispectral/hyperspectral video acquisition     Snapshot     Under-sampling and reconstruction    

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Nitrogen pollution and source identification of urban ecosystem surface water in Beijing

Yufen REN, Zhiwei XU, Xinyu ZHANG, Xiaoke WANG, Xiaomin SUN, D. J. BALLANTINE, Shengzhong WANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 1,   Pages 106-116 doi: 10.1007/s11783-012-0474-z

Abstract: We assessed the spatial and seasonal variation in concentrations of total nitrogen and different nitrogenExamination of seasonal variation showed that there was a significant inverse relationship between nitrate

Keywords： nitrogen concentration     spatial and seasonal variation     stable nitrogen isotope     urban ecosystem     source    

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Title Author Date Type Operation

Spectral characteristics of plant communities from salt marshes: A case study from Chongming Dongtan, Yangtze estuary, China

ZHANG Liquan, GAO Zhanguo, Armitage Richard, Kent Martin

Journal Article

Feature extraction of hyperspectral images for detecting immature green citrus fruit

Yongjun DING, Won Suk LEE, Minzan LI

Journal Article

Optimization for operating modes based on simulation of seasonal underground thermal energy storage

ZHAO Jun, CHEN Yan, LI Xinguo

Journal Article

Detection of Huanglongbing (citrus greening) based on hyperspectral image analysis and PCR

Kejian WANG, Dongmei GUO, Yao ZHANG, Lie DENG, Rangjin XIE, Qiang LV, Shilai YI, Yongqiang ZHENG, Yanyan MA, Shaolan HE

Journal Article

Numerical simulation of underground seasonal cold energy storage for a 10 MW solar thermal power plant

Zulkarnain ABBAS, Yong LI, Ruzhu WANG

Journal Article

Non-negativematrix factorization based unmixing for principal component transformed hyperspectral data

Xiu-rui GENG,Lu-yan JI,Kang SUN

Journal Article

Emerging theories and technologies on computationalimaging

Xue-mei HU, Jia-min WU, Jin-li SUO, Qiong-hai DAI

Journal Article

Seasonal and treatment-process variations in invertebrates in drinking water treatment plants

Zhiling Wu, Xianchun Tang, Hongbin Chen

Journal Article

Seasonal variation of nitrogen and phosphorus in Xiaojiang River—A tributary of the Three Gorges Reservoir

Zhe LI , Jinsong GUO , Man LONG , Fang FANG , Jinping SHENG , Hong ZHOU ,

Journal Article

Spatial and seasonal variations in bacterial communities of the Yellow Sea by T-RFLP analysis

Hongyuan WANG, Xiaolu JIANG, Ya HE, Huashi GUAN

Journal Article

Using balance of seasonal herbage supply and demand to inform sustainable grassland management on the

Xinquan ZHAO, Liang ZHAO, Qi LI, Huai CHEN, Huakun ZHOU, Shixiao XU, Quanmin DONG, Gaolin WU, Yixin HE

Journal Article

Characterization and seasonal distribution of microplastics in the nearshore sediments of the south-east

K. Dhineka , M. Sambandam , S. K. Sivadas , T. Kaviarasan , Umakanta Pradhan , Mehmuna Begum , Pravakar Mishra , M. V. Ramana Murthy

Journal Article

Seasonal variations of transport pathways andpotential sources of PM

Yuan Chen, Shaodong Xie, Bin Luo

Journal Article

High-resolution spectral video acquisition

Lin-sen CHEN, Tao YUE, Xun CAO, Zhan MA, David J. BRADY

Journal Article

Nitrogen pollution and source identification of urban ecosystem surface water in Beijing

Yufen REN, Zhiwei XU, Xinyu ZHANG, Xiaoke WANG, Xiaomin SUN, D. J. BALLANTINE, Shengzhong WANG

Journal Article