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Electromagnetic induction mapping at varied soil moisture reveals field-scale soil textural patterns

Hiruy ABDU, David A. ROBINSON, Janis BOETTINGER, Scott B. JONES

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2, Pages 135-145 doi: 10.15302/J-FASE-2017143

Abstract: Knowledge of the spatial distribution of soil textural properties is important for determining soil moisturestorage and soil hydraulic transport properties.Our objective was to employ electromagnetic induction (EMI) mapping in low apparent electrical conductivity(EC ) soils at varying soil water contents to capture time invariant properties such as soil texturem × 50 m field included a subsurface gravelly patch in an otherwise homogeneous silt-loam alluvial soil

Keywords： soil electrical conductivity soil texture mapping temporal stability analysis

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Global perspectives and future research directions for the phytoremediation of heavy metal-contaminated soil: A knowledge mapping analysis from 2001 to 2020

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1507-2

Abstract:

• The overall global perspective of the PHMCS field was obtained.

Keywords： Heavy metal-contaminated soil Hot topics Knowledge mapping analysis Knowledge base Phytoremediation

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A comparative review of the state and advancement of Site-Specific Crop Management in the UK and China

Zhenhong LI, James TAYLOR, Lynn FREWER, Chunjiang ZHAO, Guijun YANG, Zhenhai LI, Zhigang LIU, Rachel GAULTON, Daniel WICKS, Hugh MORTIMER, Xiao CHENG, Chaoqing YU, Zhanyi SUN

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 2, Pages 116-136 doi: 10.15302/J-FASE-2018240

Abstract:

Precision agriculture, and more specifically Site-Specific Crop Management (SSCM), has been implemented in some form across nearly all agricultural production systems over the past 25 years. Adoption has been greatest in developed agricultural countries. In this review article, the current situation of SSCM adoption and application is investigated from the perspective of a developed (UK) and developing (China) agricultural economy. The current state-of-the art is reviewed with an emphasis on developments in position system technology and satellite-based remote sensing. This is augmented with observations on the differences between the use of SSCM technologies and methodologies in the UK and China and discussion of the opportunities for (and limitations to) increasing SSCM adoption in developing agricultural economies. A particular emphasis is given to the role of socio-demographic factors and the application of responsible research and innovation (RRI) in translating agri-technologies into China and other developing agricultural economies. Several key research and development areas are identified that need to be addressed to facilitate the delivery of SSCM as a holistic service into areas with low precision (PA) agriculture adoption. This has implications for developed as well as developing agricultural economies.

Keywords： remote sensing decision support responsible research and innovation digital soil mapping

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Mercury source zone identification using soil vapor sampling and analysis

David WATSON,Carrie MILLER,Brian LESTER,Kenneth LOWE,George SOUTHWORTH,Mary Anna BOGLE,Liyuan LIANG,Eric PIERCE

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4, Pages 596-604 doi: 10.1007/s11783-014-0709-2

Abstract: Soil gas samples were collected through a sealed inner tube of the assembly and were analyzed immediatelythat the vapor phase Hg(0) was not being depleted and that sampling results were not sensitive to the soilWe conclude from our studies that soil gas sampling and analysis can be conducted rapidly and inexpensively

Keywords： push probe spill characterization mapping gas

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Map Update in Raster Mode by Means of Aerial and Space Images

Lin Zongjian

Strategic Study of CAE 2000, Volume 2, Issue 4, Pages 43-47

Abstract:

To meet the urgent needs of updating 1：10 000 scale and 1 ：50 000 scale topographic map for the whole territory of China, an integrated techinique for key elements revision is proposed, in which the topographic map is updated in raster mode through overlaying the precisely geo-rectified aerial or satellite image on the digitized map. The following issues are specially presented： 1) The scanning resolution of topographic map digitization in raster mode, which is not the same as the one in vector mode. 2) The concept of image array and graphic control point, instead of traditional pinpoint control point. 3) A local registration and adjustment method for rectifying aerial and space image using DRG without DEM. 4) Quantitative image interpretation by the guide of qualitative analysis. 5) The semi-automatic metrod for extraction of structural information from remote sensing image. Finally, a software developed on the basis of the proposed technique and its function are described, at the same time, an experiment result of 600 scenes of 1-50 000 scale topographic maps revision using the developed softwarte is presented.

Keywords： surveying and mapping remote sensing map updating digital raster graphic (DRG)

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Coupled solid-fluid FE-analysis of an embankment dam

Michael PERTL, Matthias HOFMANN, Guenter HOFSTETTER

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1, Pages 53-62 doi: 10.1007/s11709-010-0084-4

Abstract: A coupled solid-fluid FE-model for partially saturated soils, characterized by modeling the soil as athree-phase material consisting of a deformable soil skeleton and the fluid phases water and air, isAs a constitutive model for the soil skeleton, the well-known Barcelona Basic model (BBM) is employedFor the BBM, a computationally efficient return mapping algorithm is proposed, which only requires the

Keywords： multi-phase model unsaturated soil model Barcelona Basic model (BBM) return mapping algorithm embankment

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Chemical mapping of cement pastes by using confocal Raman spectroscopy

Fengjuan LIU,Zhihui SUN

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 2, Pages 168-173 doi: 10.1007/s11709-015-0323-9

Abstract: In the present study, chemical mapping on the hydration process of cement paste with water-to-cementIt is concluded from the study that chemical mapping was an effective method to assist in visualizing

Keywords： chemical mapping Raman spectroscopy calcium silicates calcium hydroxide ettringite

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Independent continuous and mapping method of structural topology optimization based on the global stress

Yunkang SUI, Jili FENG, Hongling YE, Xirong PENG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2, Pages 130-142 doi: 10.1007/s11465-010-0011-3

Abstract: four measures are adopted. 1) Topology optimization model is established by independent continuous mapping

Keywords： independent continuous mapping (ICM) method global stresses constraints topology optimization continuum

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A survey of photon mapping state-of-the-art research and future challenges

Chun-meng KANG,Lu WAN,Yan-ning XU,Xiang-xu MENG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 3, Pages 185-199 doi: 10.1631/FITEE.1500251

Abstract: The photon mapping algorithm is an effective method for computing global illumination with its obviousThe deficiency of precise details and efficient rendering are still the main challenges of photon mappingof categories including radiance estimation, photon relaxation, photon tracing, progressive photon mappingThe goals of our report are giving readers an overall introduction to photon mapping and motivating further

Keywords： Global illumination Photon mapping Radiance estimation Photon relaxation Progressive photon mapping

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Quantifying and mapping spatial variability of Shanghai household carbon footprints

Shangguang YANG,Chunlan WANG,Kevin LO,Mark WANG,Lin LIU

Frontiers in Energy 2015, Volume 9, Issue 1, Pages 115-124 doi: 10.1007/s11708-015-0348-8

Abstract: Understanding the spatial variability of household carbon emissions is necessary for formulating sustainable and low-carbon energy policy. However, data on household carbon emissions is limited in China, the world’s largest greenhouse gases emitter. This study quantifies and maps household carbon emissions in Shanghai using a city-wide household survey. The findings reveal substantial spatial variability in household carbon emissions, especially in transport-related emissions. Low emission clusters are founded in Hongkou, Xuhui, Luwan, Jinshan, and Fengxian. High emission clusters are located in Jiading and Pudong. Overall, the spatial pattern of household carbon emissions in Shanghai is donut-shaped: lowest in the urban core, increasing in the surrounding suburban areas, and declining again in the urban fringe and rural regions. The household emissions are correlated with a number of housing and socioeconomic factors, including car ownership, type of dwelling, size of dwelling, age of dwelling, and income. The findings underscore the importance of a localized approach to low-carbon policy-making and implementation.

Keywords： household carbon emissions spatial variability energy policy Shanghai China

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Platform governance in the era of AI and the digital economy

Frontiers of Engineering Management 2023, Volume 10, Issue 1, Pages 177-182 doi: 10.1007/s42524-022-0241-1

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Mapping the structure-activity relationship of

Worawan PANPIPAT, Hasene KESKIN, Zheng GUO

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 1, Pages 105-113 doi: 10.1007/s11705-015-1502-x

Abstract: The phase behavior of twelve synthesized -sitosteryl fatty acid esters with acyl moieties with different chain lengths (C2:0-C18:0) and different degrees of unsaturation (C18:1-C18:3) were investigated in pure and mixed Langmuir monolayers with phospholipids. The surface-pressure isotherms showed that short chain -sitosteryl fatty acid esters gave smaller mean molecular areas and had decreased monolayer stability and the long chain steryl esters did not produce collapsed plateaus. All the steryl esters displayed strong condensing effects, but there was a pronounced structural dependency: medium chain esters (C8 and C10) were less efficient than short and long chain esters. Atomic force microscopy imaging demonstrated that monolayers mixed with dipalmitoyl phosphatidylcholine (DPPC) displayed both DPPC-rich and steryl lipid-rich domains. However, the height and area differences between the two phases and the roughness and morphologic patterns were very dependent on the steryl lipid concentrations as well as the length, the degree of unsaturation and the molecular conformations of the acyl segments. These findings not only provide a better understanding of the interactions between phytosteryl hydrophobic derivatives and biomembranes, but also may be of general use for the design and engineering of phytosterol structural derivations for specific food and pharmaceutical applications.

Keywords： β-sitosteryl fatty acid esters dipalmitoyl phosphatidylcholine Langmuir monolayer condensing effect structure-activity relationship

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Revisiting digital twins: Origins, fundamentals, and practices

Frontiers of Engineering Management Pages 668-676 doi: 10.1007/s42524-022-0216-2

Abstract: The digital twins (DT) has quickly become a hot topic since it was proposed.

Keywords： virtual manufacturing digital twins modeling and simulation digitization computational engineering

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Development trend of urban design in “digital age”: Pan-dimensionality and individual-ubiquity

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3, Pages 569-575 doi: 10.1007/s11709-021-0735-7

Abstract: The wave of “digital age” featuring digital information is coming.Digital technology is profoundly changing the societal development direction and evolution paths.creation and adaptation of material space forms that integrate humanities, art, technology and materials, digitalThe result of this evolution is “digital urban design paradigm based on human-computer interaction”,

Keywords： digital age urban design multiple objectives human-computer interaction pan-dimensionality individual-ubiquity

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Mapping the trends and prospects of battery cathode materials based on patent landscape

Frontiers in Energy Pages 822-832 doi: 10.1007/s11708-023-0900-x

Abstract: Advancing portable electronics and electric vehicles is heavily dependent on the cutting-edge lithium-ion (Li-ion) battery technology, which is closely linked to the properties of cathode materials. Identifying trends and prospects of cathode materials based on patent analysis is considered a kernel to optimize and refine battery related markets. In this paper, a patent analysis is performed on 6 popular cathode materials by comprehensively considering performance comparison, development trend, annual installed capacity, technology life cycle, and distribution among regions and patent assignees. In the technology life cycle, the cathode materials majorly used in electric vehicle have entered maturity stage, while the lithium cobalt oxide (LCO) cathode that is widely used in portable electronics is still in the growth stage. In global patent distributions, China holds more than 50% of total patents. In the top 10 patent assignees of 6 cathode materials, 2 institutes are from China with the rest being Japan (6) and Republic of Korea (2), indicating that the technology of cathode materials in China is relatively scattered while cathode research is highly concentrated in Japan and Republic of Korea. Moreover, the patent distribution has to consider practical issues as well as the impacts of core patents. For example, the high cost discourages the intention of applying international patents. This paper is expected to stimulate battery research, understand technical layout of various countries, and probably forecast innovative technology breakthroughs.

Keywords： patent analysis cathode batteries technology life cycle

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Title Author Date Type Operation

Electromagnetic induction mapping at varied soil moisture reveals field-scale soil textural patterns

Hiruy ABDU, David A. ROBINSON, Janis BOETTINGER, Scott B. JONES

Journal Article

Global perspectives and future research directions for the phytoremediation of heavy metal-contaminated soil: A knowledge mapping analysis from 2001 to 2020

Journal Article

A comparative review of the state and advancement of Site-Specific Crop Management in the UK and China

Zhenhong LI, James TAYLOR, Lynn FREWER, Chunjiang ZHAO, Guijun YANG, Zhenhai LI, Zhigang LIU, Rachel GAULTON, Daniel WICKS, Hugh MORTIMER, Xiao CHENG, Chaoqing YU, Zhanyi SUN

Journal Article

Mercury source zone identification using soil vapor sampling and analysis

David WATSON,Carrie MILLER,Brian LESTER,Kenneth LOWE,George SOUTHWORTH,Mary Anna BOGLE,Liyuan LIANG,Eric PIERCE

Journal Article

Map Update in Raster Mode by Means of Aerial and Space Images

Lin Zongjian

Journal Article

Coupled solid-fluid FE-analysis of an embankment dam

Michael PERTL, Matthias HOFMANN, Guenter HOFSTETTER

Journal Article

Chemical mapping of cement pastes by using confocal Raman spectroscopy

Fengjuan LIU,Zhihui SUN