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    • Plusieurs versions

    Binary Hypothesis Testing with Byzantine Sensors: Fundamental Trade-off Between Security and Efficiency

    Ren, Xiaoqiang, Yan, Jiaqi, Mo, Yilin
    arXiv.org, Jan 19, 2018 [Revue évaluée par les pairs]

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    Effects of nitrogen supplementation of the culture medium on the growth, total lipid content and fatty acid profiles of three microalgae ( Tetraselmis subcordiformis , Nannochloropsis oculata and Pavlova viridis )

    Huang, Xuxiong, Huang, Zhengzheng, Wen, Wen, Yan, Jiaqi
    Journal of Applied Phycology, 2013, Vol.25(1), pp.129-137 [Revue évaluée par les pairs]
    Springer Science & Business Media B.V.
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    Titre: Effects of nitrogen supplementation of the culture medium on the growth, total lipid content and fatty acid profiles of three microalgae ( Tetraselmis subcordiformis , Nannochloropsis oculata and Pavlova viridis )
    Auteur: Huang, Xuxiong; Huang, Zhengzheng; Wen, Wen; Yan, Jiaqi
    Sujet: Nitrogen supplementation ; Tetraselmis subcordiformis ; Nannochloropsis oculata ; Pavlova virids ; Growth ; Total lipid ; Fatty acids
    Description: To improve the properties of microalgae as sources for biodiesel production, three microalgae ( Tetraselmis subcordiformis SHOU-S05, Nannochloropsis oculata SHOU-S14 and Pavlova viridis SHOU-S16) were cultured in media supplemented with different amounts of nitrogen (0, 0.22, 0.44, 0.88 and 1.76 mmol N·L −1 ). The growth, total lipid contents, lipid classes and fatty acid profiles of the three microalgae were assayed after 10 days of cultivation. The results indicated that the specific growth rates of T. subcordiformis , N. oculata and P. viridis were lowest (0.014, 0.033 and 0.018, respectively) in the treatments without nitrogen supplementation and increased significantly with increasing nitrogen supplementation. The microalgae treated with 0.22 mmol N·L −1 had the highest total lipid contents, which were 29.77, 35.85 and 32.10 % in T. subcordiformis , N. oculata and P. viridis , respectively. The total lipid contents as well as the proportions of neutral lipid in the three microalgae decreased significantly with increasing nitrogen supplementation between 0.22 and 1.76 mmol N·L −1 . The fatty acid profiles of the three microalgae were significantly different. The obvious characteristic of the fatty acid profile of T. subcordiformis was a high amount (17.68–22.22 %) of 18:3n3. However, EPA (C20:5n3) and C16 fatty acids were significantly high in N. oculata and P. viridis , respectively. N. oculata and P. viridis accumulated more 16-carbon fatty acids and fewer polyunsaturated fatty acids in nitrogen-limited media. It is therefore suggested that a limited nitrogen treatment is effective for improving the properties of P. viridi s and N. oculata as sources for biodiesel.
    Fait partie de: Journal of Applied Phycology, 2013, Vol.25(1), pp.129-137
    Identifiant: 0921-8971 (ISSN); 1573-5176 (E-ISSN); 10.1007/s10811-012-9846-9 (DOI)

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    Effect of high ferric ion concentrations on total lipids and lipid characteristics of Tetraselmis subcordiformis , Nannochloropsis oculata and Pavlova viridis

    Huang, Xuxiong, Wei, Likun, Huang, Zhengzheng, Yan, Jiaqi
    Journal of Applied Phycology, 2014, Vol.26(1), pp.105-114 [Revue évaluée par les pairs]
    Springer Science & Business Media B.V.
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    Titre: Effect of high ferric ion concentrations on total lipids and lipid characteristics of Tetraselmis subcordiformis , Nannochloropsis oculata and Pavlova viridis
    Auteur: Huang, Xuxiong; Wei, Likun; Huang, Zhengzheng; Yan, Jiaqi
    Sujet: Tetraselmis subcordiformis ; Nannochloropsis oculata ; Pavlova viridis ; Fe ; Total lipid ; Fatty acid
    Description: Microalgae as sources for biodiesel production have been widely investigated. Microalgae biomass, lipid content and fatty acid profiles of microalgae are limiting factors for the cost-effective production of biodiesel. In this paper, the effects of high ferric ion concentrations on three species of microalgae ( Tetraselmis subcordiformis , Nannochloropsis oculata and Pavlova viridis ) were studied. The microalgae were cultured in different concentrations (1.2 × 10 −2 , 1.2 × 10 −1 , 1.2 and 12 mmol L −1 ) of ferric ion. The growth, lipid content and fatty acid profiles of the three microalgae were analysed. When algae were cultured in 1.2 mmol L −1 ferric ion for 10 days, the final cell density and specific growth rates of T . subcordiformis , N . oculata and P . viridis decreased significantly ( p  
    Fait partie de: Journal of Applied Phycology, 2014, Vol.26(1), pp.105-114
    Identifiant: 0921-8971 (ISSN); 1573-5176 (E-ISSN); 10.1007/s10811-013-0056-x (DOI)

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    Blockchain-based sharing services: What blockchain technology can contribute to smart cities

    Sun, Jianjun, Yan, Jiaqi, Zhang, Kem
    Financial Innovation, 2016, Vol.2(1), pp.1-9 [Revue évaluée par les pairs]
    Springer Science & Business Media B.V.
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    Titre: Blockchain-based sharing services: What blockchain technology can contribute to smart cities
    Auteur: Sun, Jianjun; Yan, Jiaqi; Zhang, Kem
    Sujet: Smart city ; Blockchain ; Sharing economy ; Internet of Things (IoT) ; Smart contract
    Description: The notion of smart city has grown popular over the past few years. It embraces several dimensions depending on the meaning of the word “smart” and benefits from innovative applications of new kinds of information and communications technology to support communal sharing.By relying on prior literature, this paper proposes a conceptual framework with three dimensions: (1) human, (2) technology, and (3) organization, and explores a set of fundamental factors that make a city smart from a sharing economy perspective.Using this triangle framework, we discuss what emerging blockchain technology may contribute to these factors and how its elements can help smart cities develop sharing services.This study discusses how blockchain-based sharing services can contribute to smart cities based on a conceptual framework. We hope it can stimulate interest in theory and practice to foster discussions in this area.
    Fait partie de: Financial Innovation, 2016, Vol.2(1), pp.1-9
    Identifiant: 2199-4730 (E-ISSN); 10.1186/s40854-016-0040-y (DOI)

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    How signaling and search costs affect information asymmetry in P2P lending: the economics of big data

    Yan, Jiaqi, Yu, Wayne, Zhao, J.
    Financial Innovation, 2015, Vol.1(1), pp.1-11 [Revue évaluée par les pairs]
    Springer Science & Business Media B.V.
    Disponible
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    Titre: How signaling and search costs affect information asymmetry in P2P lending: the economics of big data
    Auteur: Yan, Jiaqi; Yu, Wayne; Zhao, J.
    Sujet: Lending industry ; P2P lending ; Big data ; Economics of big data ; Fintech ; Information economics
    Description: In the past decade, online Peer-to-Peer (P2P) lending platforms have transformed the lending industry, which has been historically dominated by commercial banks. Information technology breakthroughs such as big data-based financial technologies (Fintech) have been identified as important disruptive driving forces for this paradigm shift. In this paper, we take an information economics perspective to investigate how big data affects the transformation of the lending industry. By identifying how signaling and search costs are reduced by big data analytics for credit risk management of P2P lending, we discuss how information asymmetry is reduced in the big data era. Rooted in the lending business, we propose a theory on the economics of big data and outline a number of research opportunities and challenging issues.
    Fait partie de: Financial Innovation, 2015, Vol.1(1), pp.1-11
    Identifiant: 2199-4730 (E-ISSN); 10.1186/s40854-015-0018-1 (DOI)

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    Erratum to: Overview of business innovations and research opportunities in blockchain and introduction to the special issue

    Leon Zhao, J., Fan, Shaokun, Yan, Jiaqi
    Financial Innovation, 2017, Vol.3(1), pp.1-1 [Revue évaluée par les pairs]

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    Overview of business innovations and research opportunities in blockchain and introduction to the special issue

    Zhao, J., Fan, Shaokun, Yan, Jiaqi
    Financial Innovation, 2016, Vol.2(1), pp.1-7 [Revue évaluée par les pairs]
    Springer Science & Business Media B.V.
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    Titre: Overview of business innovations and research opportunities in blockchain and introduction to the special issue
    Auteur: Zhao, J.; Fan, Shaokun; Yan, Jiaqi
    Sujet: Bitcoin ; Blockchain ; Business innovation ; Public ledger ; Computational trust
    Description: Blockchain has become a new frontier of venture capitals that has attracted the attention of banks, governments, and other business corporations. The recent blockchain related attempts included legal blockchains by Fadada.com and Microsoft and pork tracking blockchains by Walmart and IBM. Blockchain is poised to become the most exciting invention after the Internet; while the latter connects the world to enable new business models based on online business processes, the former will help resolve the trust issue more efficiently via network computing. In this paper, we give an overview on blockchain research and development as well as introduce the papers in this special issue. We show that while blockchain has enabled Bitcoin, the most successful digital currency, its widespread adoption in finance and other business sectors will lead to many business innovations as well as many research opportunities.
    Fait partie de: Financial Innovation, 2016, Vol.2(1), pp.1-7
    Identifiant: 2199-4730 (E-ISSN); 10.1186/s40854-016-0049-2 (DOI)

    • Plusieurs versions

    FERONIA/FER-like receptor kinases integrate and modulate multiple signaling pathways in fruit development and ripening

    Li, Bingbing, Yan, Jiaqi, Jia, Wensuo
    Plant signaling & behavior, 02 December 2017, Vol.12(12) [Revue évaluée par les pairs]

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    A novel trigger for pseudospark switch with high repetition rate, low jitter, and compact structure

    Yan, Jiaqi, Shen, Saikang, Wang, Yanan, Zhang, Siyu, Cheng, Le, Ding, Weidong
    The Review of scientific instruments, June 2018, Vol.89(6), pp.065102 [Revue évaluée par les pairs]
    MEDLINE/PubMed (U.S. National Library of Medicine)
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    Titre: A novel trigger for pseudospark switch with high repetition rate, low jitter, and compact structure
    Auteur: Yan, Jiaqi; Shen, Saikang; Wang, Yanan; Zhang, Siyu; Cheng, Le; Ding, Weidong
    Sujet: Articles;
    Description: This paper presents the design and development of a trigger with a high repetition rate, low jitter, and compact structure for the pseudospark switch (PSS), which includes an improved Marx generator based on avalanche transistors and a corona-plasma trigger unit. The generator adopted a novel 3 × 12-stage Marx circuit based on avalanche transistors in which the failure rate of transistors in the first and second stages was significantly reduced by connecting the parallel capacitors compared to the previous similar generator. The reason for the improved performance was also discussed. The main parameters of output pulses were an amplitude of -7 kV, rise time of 6 ns, jitter of 0.2 ns, and repetition rate of 2 kHz. The corona-plasma trigger unit adopted BaTiO ceramics with high ε as the dielectric and was arranged in the hollow cathode of the PSS. The experiments of triggering a PSS prototype were conducted. The influence of anode voltage and pressure on the trigger delay and jitter was studied,...
    Fait partie de: The Review of scientific instruments, June 2018, Vol.89(6), pp.065102
    Identifiant: 1089-7623 (E-ISSN); 29960516 Version (PMID); 10.1063/1.5029420 (DOI)

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    Effects of oligochitosan on postharvest Alternaria rot, storage quality, and defense responses in Chinese jujube (Zizyphus jujuba Mill. cv. Dongzao) fruit

    Yan, Jiaqi, Li, Jian, Zhao, Hongwei, Chen, Ni, Cao, Jiankang, Jiang, Weibo
    Journal of food protection, May 2011, Vol.74(5), pp.783-8 [Revue évaluée par les pairs]
    MEDLINE/PubMed (U.S. National Library of Medicine)
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    Titre: Effects of oligochitosan on postharvest Alternaria rot, storage quality, and defense responses in Chinese jujube (Zizyphus jujuba Mill. cv. Dongzao) fruit
    Auteur: Yan, Jiaqi; Li, Jian; Zhao, Hongwei; Chen, Ni; Cao, Jiankang; Jiang, Weibo
    Sujet: Alternaria -- Drug Effects ; Antifungal Agents -- Pharmacology ; Chitin -- Analogs & Derivatives ; Food Contamination -- Prevention & Control ; Food Preservation -- Methods ; Ziziphus -- Microbiology
    Description: Effects of oligochitosan (OCH) on postharvest rot caused by Alternaria alternata in Chinese jujube (Zizyphus jujuba Mill. cv. Dongzao) fruit were investigated. An in vitro test indicated that mycelial growth of A. alternata was strongly suppressed by OCH at 0.5, 1, 2, 5, 10, 15, or 20 g/liter. The half-inhibition concentration of OCH against this fungus was 0.76 and 1.69 g/liter on days 4 and 6 of incubation, respectively. Lesion area and disease incidence in the jujube fruit inoculated with A. alternata were remarkably reduced by the OCH treatments at concentrations higher than 1 g/liter, but 5 g/liter OCH was considered the optimal treatment for inhibiting disease development. OCH also significantly reduced postharvest natural decay, promoted fruit firmness, delayed decline in soluble solids and loss of ascorbic acid, and increased total phenolic compounds during storage at 0°C and 85 to 95% relative humidity. Biochemical evaluations revealed that the activities of the main defense-related...
    Fait partie de: Journal of food protection, May 2011, Vol.74(5), pp.783-8
    Identifiant: 1944-9097 (E-ISSN); 21549049 Version (PMID); 10.4315/0362-028X.JFP-10-480 (DOI)