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  1. Article ; Online: Representation and Reasoning for Model of 3DR46 in Complex 3D Space

    HAO Xiaohong, LI Song, HAO Zhongxiao

    Jisuanji kexue yu tansuo, Vol 14, Iss 12, Pp 2004-

    2020  Volume 2013

    Abstract: To remedy the deficiency of the existing methods on 3D direction relations, the 3DR46 direction relations model is proposed. The model can represent and distinguish 246 complex 3D direction relations. To process the dynamic of 3D direction relations, the ...

    Abstract To remedy the deficiency of the existing methods on 3D direction relations, the 3DR46 direction relations model is proposed. The model can represent and distinguish 246 complex 3D direction relations. To process the dynamic of 3D direction relations, the dynamic relations of the 3DR46 model are studied and the dynamic adjacent relations of the dynamic direction blocks are given. What's more, the check algorithm of inspecting the continuity of the dynamic direction relations is put forward. The effective verification of the continuity of direction relationship can improve the accuracy of judgment and prediction. To accomplish the reducing dimension processing for the complex 3D direction relations, the bi-directional mapping relations of the 3DR46 direction relation model are given for some continuous 3D objects with regular shape without separated parts. The method comparison and experimental analysis are further carried out. The theoretical research and experiment show that the research results can process the complex 3D dynamic direction relations and the reasoning problems of complex direction relations. The ability of presenting and analyzing the 3D directions of the spatial database is enhanced.
    Keywords 3d direction relation ; spatial database ; relation model ; spatial relation reasoning ; dynamic adjacent relation ; Electronic computers. Computer science ; QA75.5-76.95
    Subject code 670
    Language Chinese
    Publishing date 2020-12-01T00:00:00Z
    Publisher Journal of Computer Engineering and Applications Beijing Co., Ltd., Science Press
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Knowledge Graph Embedding Technology

    SHU Shitai, LI Song+, HAO Xiaohong, ZHANG Liping

    Jisuanji kexue yu tansuo, Vol 15, Iss 11, Pp 2048-

    A Review

    2021  Volume 2062

    Abstract: Knowledge graph embedding (KGE) is a new research hotspot in the field of knowledge graphs, which aims to apply the translation invariance of word vectors to embedding entities and relationships of the knowledge graph into a low-dimensional vector space ... ...

    Abstract Knowledge graph embedding (KGE) is a new research hotspot in the field of knowledge graphs, which aims to apply the translation invariance of word vectors to embedding entities and relationships of the knowledge graph into a low-dimensional vector space to complete knowledge representation. In this paper, it is mainly concerned with the classification according to the types of practical problems to be solved. Firstly, it expounds four major types of embedding methods of knowledge graph, including deep learning-based methods, graphical features-based methods, translation model-based methods, and other model-based methods. The algorithm ideas of each model are elaborated, and the advantages and disadvantages of each model are concluded. Secondly, the algorithm experi-ment of knowledge graph embedding is analyzed and summarized from the four aspects of commonly used data sets, evaluation indicators, algorithms, and experiments, then a horizontal and vertical comparison of the embedding method is made. Finally, from the perspective of solving practical problems, the future direction of knowledge graph embedding technology is given. Through research, it is discovered that in the deep learning-based method, LCPE achieves the best effect; in the graphical features-based method, TCE makes the best impression; whereas in the translation model-based method, NTransGH responds most optimistically. Future researches can be expanded on the basis of LCPE, TCE, and NTransGH to continuously improve the experimental effects of link prediction and triplets classification.
    Keywords knowledge graph embedding (kge) ; knowledge representation ; knowledge graph completion (kgc) ; link prediction ; triple classification ; Electronic computers. Computer science ; QA75.5-76.95
    Subject code 004
    Language Chinese
    Publishing date 2021-11-01T00:00:00Z
    Publisher Journal of Computer Engineering and Applications Beijing Co., Ltd., Science Press
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article: 生物质炭配施有机物料对贫瘠红壤酶活性和微生物碳源代谢功能的影响.

    Bai, Mei-Xia / Situ, Gao-Ming / Li, Song-Hao / Wu, Qi-Feng / Liang, Chen-Fei / Qin, Hua / Chen, Jun-Hui

    Ying yong sheng tai xue bao = The journal of applied ecology

    2022  Volume 33, Issue 5, Page(s) 1283–1290

    Abstract: To improve carbon (C) sequestration and soil fertility of red soil, a two-year (2017 and 2018) field experiment was conducted to investigate the effects of two organic amendments ( ...

    Title translation Effects of combined application of biochar with organic amendments on enzyme activity and microbial metabolic function of carbon sources in infertile red soil.
    Abstract To improve carbon (C) sequestration and soil fertility of red soil, a two-year (2017 and 2018) field experiment was conducted to investigate the effects of two organic amendments (
    MeSH term(s) Animals ; Carbohydrates ; Carbon ; Charcoal/chemistry ; Manure ; Nitrogen/analysis ; Potassium/analysis ; Sheep ; Soil/chemistry ; Zea mays
    Chemical Substances Carbohydrates ; Manure ; Soil ; biochar ; Charcoal (16291-96-6) ; Carbon (7440-44-0) ; Nitrogen (N762921K75) ; Potassium (RWP5GA015D)
    Language Chinese
    Publishing date 2022-06-15
    Publishing country China
    Document type Journal Article
    ZDB-ID 2881809-X
    ISSN 1001-9332
    ISSN 1001-9332
    DOI 10.13287/j.1001-9332.202205.017
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: [Effects of Nitrogen Fertilizer Management on CH

    Zheng, Mei-Qun / Liu, Juan / Jiang, Pei-Kun / Wu, Jia-Sen / Li, Yong-Fu / Li, Song-Hao

    Huan jing ke xue= Huanjing kexue

    2022  Volume 43, Issue 4, Page(s) 2171–2181

    Abstract: ... Methane ( ... ...

    Abstract Methane (CH
    MeSH term(s) Agriculture/methods ; Fertilizers/analysis ; Greenhouse Gases/analysis ; Methane/analysis ; Nitrogen/analysis ; Nitrous Oxide/analysis ; Oryza ; Soil/chemistry
    Chemical Substances Fertilizers ; Greenhouse Gases ; Soil ; Nitrous Oxide (K50XQU1029) ; Nitrogen (N762921K75) ; Methane (OP0UW79H66)
    Language Chinese
    Publishing date 2022-04-07
    Publishing country China
    Document type Journal Article
    ISSN 0250-3301
    ISSN 0250-3301
    DOI 10.13227/j.hjkx.202107260
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: [Effects of bamboo charcoal on the growth of Trifolium repens and soil bacterial community structure].

    Li, Song-Hao / He, Dong-Hua / Shen, Qiu-Lan / Xu, Qiu-Fang

    Ying yong sheng tai xue bao = The journal of applied ecology

    2014  Volume 25, Issue 8, Page(s) 2334–2340

    Abstract: The effects of addition rates (0, 3% and 9%) and particle sizes (0.05, 0.05-1.0 and 1.0-2.0 mm) of bamboo charcoal on the growth of Trifolium repens and soil microbial community structure were investigated. The results showed that bamboo charcoal ... ...

    Abstract The effects of addition rates (0, 3% and 9%) and particle sizes (0.05, 0.05-1.0 and 1.0-2.0 mm) of bamboo charcoal on the growth of Trifolium repens and soil microbial community structure were investigated. The results showed that bamboo charcoal addition greatly promoted the early growth of T. repens, with the 9% charcoal addition rate being slightly better than the 3% charcoal addition rate. The effects of different particle sizes of bamboo charcoal on the growth of T. repens were not different significantly. Growth promotion declined with time during 120 days after sowing, and disappeared completely after 5 months. DGGE analysis of the bacterial 16S rDNA V3 fragment indicated that bamboo charcoal altered the soil bacterial community structure. The amount and Shannon diversity index of bacteria in the bamboo charcoal addition treatments increased compared with CK. The quantitative analysis showed that the amount of bacteria in the treatment with bamboo charcoal of fine particle (D < 0.05 mm) at the 9% addition rate was significantly higher than in the other treatments. The fine bamboo charcoal had a great effect on soil bacteria amount compared with the charcoal of other sizes at the same addition rate.
    MeSH term(s) Bacteria/classification ; Bambusa ; Charcoal ; Soil ; Soil Microbiology ; Trifolium/growth & development
    Chemical Substances Soil ; Charcoal (16291-96-6)
    Language Chinese
    Publishing date 2014-08
    Publishing country China
    Document type Journal Article
    ZDB-ID 2881809-X
    ISSN 1001-9332
    ISSN 1001-9332
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: 不同施肥模式对雷竹林土壤真菌群落特征的影响.

    Chen, Zhi Hao / Liang, Xue / Li, Yong Chun / Li, Yong Fu / Xu, Qiu Fang / Wu, Qi Feng / Li, Song Hao / Shen, Zhen Ming

    Ying yong sheng tai xue bao = The journal of applied ecology

    2017  Volume 28, Issue 4, Page(s) 1168–1176

    Abstract: In order to investigate the effect of fertilization on soil fungal community of Phyllostachys violascens stand, we characterized the abundance and community structure of soil fungi using the methods of terminal restriction fragment length polymorphism (T- ...

    Title translation Effects of different fertilization regimes on soil fungal communities under Phyllostachys violascens stand.
    Abstract In order to investigate the effect of fertilization on soil fungal community of Phyllostachys violascens stand, we characterized the abundance and community structure of soil fungi using the methods of terminal restriction fragment length polymorphism (T-RFLP) and real-time quantitative PCR. The experimental treatments included blank control (CK), chemical fertilizer (CF), organic manure (M), mixture of chemical fertilizer and organic manure (CFM) and mixture of chemical fertilizer and organic manure plus mulching (CFMM). The results showed that fungal community structure and diversity were markedly affected by different fertilization regimes. In 0-20 cm soil layer, CF and CFMM treatments resulted in a significant reduction of Shannon and evenness indices. Soil fungi under CK, M, CFMM treatments in 0-20 cm soil layer and CK, CF, CFMM treatments in 20-40 cm soil layer formed independent community structures. Soil fungal abundance showed significantly positive correlation with the concentrations of soil total nitrogen, ammonium nitrogen and nitrate nitrogen. Organic matter, ammonium nitrogen, available phosphorus and available nitrogen concentrations were the main factors that influenced the variation of fungal community composition. The above findings indicated that 0-20 cm and 20-40 cm soil layers had different characteristics in response to different fertilization regimes under P. violascens stand. The soil fungal community in the 0-20 cm layer was mainly affected by soil organic matter, while that in the 20-40 cm layer was sensitive to the input of chemical fertilizer. The effect of fertilization on the diversity of fungal community mainly occurred in the 0-20 cm soil layer.
    MeSH term(s) Fertilizers ; Fungi ; Manure ; Nitrogen ; Soil ; Soil Microbiology
    Chemical Substances Fertilizers ; Manure ; Soil ; Nitrogen (N762921K75)
    Language Chinese
    Publishing date 2017-04-18
    Publishing country China
    Document type Journal Article
    ZDB-ID 2881809-X
    ISSN 1001-9332
    ISSN 1001-9332
    DOI 10.13287/j.1001-9332.201704.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Shift in abundance and structure of soil ammonia-oxidizing bacteria and archaea communities associated with four typical forest vegetations in subtropical region

    Li, Yong-Chun / Liu, Bu-Rong / Li, Song-Hao / Qin, Hua / Fu, Wei-Jun / Xu, Qiu-Fang

    Journal of soils and sediments. 2014 Sept., v. 14, no. 9

    2014  

    Abstract: PURPOSE: Nitrogen (N) is one of the most important elements that can limit plant growth in forest ecosystems. Ammonia-oxidizing bacteria (AOB) and archaea (AOA) are considered as the key drivers of global N biogeochemical cycling. Soil ammonia-oxidizing ... ...

    Abstract PURPOSE: Nitrogen (N) is one of the most important elements that can limit plant growth in forest ecosystems. Ammonia-oxidizing bacteria (AOB) and archaea (AOA) are considered as the key drivers of global N biogeochemical cycling. Soil ammonia-oxidizing microbial communities associated with subtropical vegetation remain poorly characterized. The aim of this study was to determine how AOA and AOB abundance and community structure shift in response to four typical forest vegetations in subtropical region. MATERIALS AND METHODS: Broad-leaved forest (BF), Chinese fir forest (CF), Pinus massoniana forest (PF), and moso bamboo forest (MB) were widely distributed in the subtropical area of southern China and represented typical vegetation types. Four types of forest stands of more than 30� years grew adjacent to each other on the same soil type, slope, and elevation, were chosen for this experiment. The abundance and community structure of AOA and AOB were characterized by using real-time PCR and denaturing gradient gel electrophoresis (DGGE). The impact of soil properties on communities of AOA and AOB was tested by canonical correspondence analysis (CCA). RESULTS AND DISCUSSION: The results indicated that AOB dominated in numbers over AOA in both BF and MB soils, while the AOA/AOB ratio shifted with different forest stands. The highest archaeal and bacterial amoA gene copy numbers were detected in CF and BF soils, respectively. The AOA abundance showed a negative correlation with soil pH and organic C but a positive correlation with NO₃ ⁻−N concentration. The structures of AOA communities changed with vegetation types, but vegetation types alone would not suffice for shaping AOB community structure among four forest soils. CCA results revealed that NO₃ ⁻−N concentration and soil pH were the most important environmental gradients on the distribution of AOA community except vegetation type, while NO₃ ⁻−N concentration, soil pH, and organic C significantly affected the distribution of the AOB communities. CONCLUSIONS: These results revealed the differences in the abundance and structure of AOA and AOB community associated with different tree species, and AOA was more sensitive to vegetation and soil chemical properties than AOB. N bioavailability could be directly linked to AOA and AOB community, and these results are useful for management activities, including forest tree species selection in areas managed to minimize N export to aquatic systems.
    Keywords Cunninghamia lanceolata ; Pinus massoniana ; bamboos ; bioavailability ; biogeochemical cycles ; community structure ; deciduous forests ; denaturing gradient gel electrophoresis ; denitrifying bacteria ; forest ecosystems ; forest growth ; forest soils ; forest stands ; forest trees ; genes ; microbial communities ; nitrogen ; plant growth ; quantitative polymerase chain reaction ; soil pH ; soil structure ; subtropics ; China
    Language English
    Dates of publication 2014-09
    Size p. 1577-1586.
    Publishing place Springer-Verlag
    Document type Article
    ZDB-ID 2050898-0
    ISSN 1614-7480 ; 1439-0108
    ISSN (online) 1614-7480
    ISSN 1439-0108
    DOI 10.1007/s11368-014-0902-8
    Database NAL-Catalogue (AGRICOLA)

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