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Additive Lie (ξ-Lie) Derivations and Generalized Lie (ξ-Lie) Derivations on Prime Algebras

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Acta Mathematica Sinica,English Series 2013年第2期29卷 383-392页

作者： xiao Fei QI Jin Chuan hou Department of Mathematics Shanxi University Department of Mathematics Taiyuan University of Technology

The additive （generalized） ξ-Lie derivations on prime algebras are characterized. It is shown, under some suitable assumptions, that an additive map L is an additive generalized Lie derivation if and only if it is the sum of an additive generalized derivation and an additive map from the algebra into its center vanishing all commutators; is an additive （generalized） E-Lie derivation with ξ -if and only if it is an additive （generalized） derivation satisfying L（ξA） =- ξL（A） for all A. These results are then used to characterize additive （generalized） ξ-Lie derivations on several operator Mgebras such as Banach space standard operator algebras and yon Neumman algebras.

关键词： Prime algebras ξ-Lie derivations generalized ξ-Lie derivations

Ritt-Wu Characteristic Set Method for Laurent Partial Differential Polynomial Systems

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Journal of Systems Science & Complexity 2019年第1期32卷 62-77页

作者： hu Youren GAO xiao-Shan KLMM Academy of Mathematics and Systems Science Chinese Academy of Sciences School of Mathematics University of Chinese Academy of Sciences Chinese Academy of Sciences

In this paper, a Ritt-Wu characteristic set method for Laurent partial differential polynomial systems is presented. The concept of Laurent regular differential chain is de?ned and its basic properties are proved. The authors give a partial method to decide whether a Laurent differential chain A is Laurent regular. The decision for whether A is Laurent regular is reduced to the decision of whether a univariate differential chain A1 is Laurent regular. For a univariate differential chain A1,the authors ?rst give a criterion for whether A1 is Laurent regular in terms of its generic zeros and then give partial results on deciding whether A1 is Laurent regular.

关键词： Newton polygon Laurent partial differential polynomial system Laurent regular triangular set Ritt-Wu characteristic set

Nonlinear dynamics of Kuroshio intrusion in the Luzon Strait

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Science China Earth Sciences 2017年第4期60卷 761-769页

作者： hou YiJun LIU YaHao hu Po WANG Zheng Key Laboratory of Ocean Circulation and Waves Lnstitute of OceanologyChinese Academy of Sciences Laboratory for Ocean and Climate Dynamics Qingdao National Laboratory for Marine Science and Technology

This study used a 1.5-layer reduced-gravity numerical model to investigate the nonlinear dynamics of Kuroshio intrusion into the Luzon *** model results suggested that both basin-scale wind curl and lateral friction are the primary factors that control the transformation of the flow,although inertia also plays an important *** an idealized model,both the mechanism via which the flow pattern changes depending on the two primary factors and the occurrence of hysteresis were *** was established that the transformation of the Kuroshio flow field between the four previously reported flow patterns(i.e.,leaping across,current looping,eddy shedding,and branch intruding) can be explained under a unified theoretical framework.A diagram is proposed to explain how the flow field transforms between the four patterns from a certain prior state when varying the values of the controlling factors.

关键词： Drought index Regional applicability Terrestrial water storage Soil moisture Streamflow

不同初加工方法对咖啡豆风味化合物和感官特性的影响

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食品工业科技 2025年第1期46卷 22-32页

作者：肖克翟慧楠胡荣锁于鑫欣董文江宁夏大学食品科学与工程学院、宁夏食品微生物应用技术与安全控制重点实验室宁夏银川750021 中国热带农业科学院香料饮料研究所海南万宁571533 海南省特色热带作物适宜性加工与品质控制重点实验室海南万宁571533 国家重要热带作物工程技术研究中心海南万宁571533

本研究旨在探究不同初加工处理方法对阿拉比卡咖啡理化特性、风味和感官特性的影响。通过电子鼻和感官分析评价不同初加工咖啡样品的感官风味,主成分分析(PCA)对不同初加工方法进行区分,并利用皮尔逊相关系数分析初加工方法与产生的风... 详细信息

本研究旨在探究不同初加工处理方法对阿拉比卡咖啡理化特性、风味和感官特性的影响。通过电子鼻和感官分析评价不同初加工咖啡样品的感官风味,主成分分析(PCA)对不同初加工方法进行区分,并利用皮尔逊相关系数分析初加工方法与产生的风味化合物之间的关系。结果表明,在理化指标方面,不同初加工方法对咖啡样品的总可滴定酸度(TA)、总可溶性固形物(TSS)和pH具有显著影响(P<0.05),其中,湿法加工(CS)的pH最高。初加工方法对咖啡样品中的生物碱、绿原酸和有机酸等风味化合物含量影响较大,干法处理Ⅰ(GA)的咖啡因含量最高(12.32 mg/g DW),蜜处理Ⅰ(MA)拥有最高的葫芦巴碱含量(3.71 mg/g DW),湿法加工(CS)导致咖啡样品具有最低的绿原酸含量和最高的有机酸含量。此外,电子鼻结果显示,不同初加工方法制备的咖啡香气化合物含量差异显著,相较于人工评测,电子感官分析可以更有效地对不同初加工方法进行区分。该研究结果明晰了不同初加工方法对咖啡的化学组成及感官风味的影响,对咖啡风味品质提升及对优质产品的筛选和鉴别具有重要意义。

关键词：阿拉比卡咖啡初加工处理理化特性风味化合物电子感官

Topic discovery and evolution in scientific literature based on content and citations

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Frontiers of Information Technology & Electronic Engineering 2017年第10期18卷 1511-1524页

作者： hou-kui Zhou hui-min YU Roland hu College of Information Science & Electronic Engineering Zhejiang University Hangzhou 310027 China State Key Lab of CAD & CG Zhejiang University Hangzhou 310027 China School of Information Engineering Zhejiang A &F University Lin'an 311300 China Zhejiang Provincial Key Laboratory of Forestry Intelligent Monitoring and Information Technology Lin'an 311300 China

Researchers across the globe have been increasingly interested in the manner in which important research topics evolve over time within the corpus of scientific literature. In a dataset of scientific articles, each document can be considered to comprise both the words of the document itself and its citations of other documents. In this paper, we propose a citationcontent-latent Dirichlet allocation(LDA) topic discovery method that accounts for both document citation relations and the content of the document itself via a probabilistic generative model. The citation-content-LDA topic model exploits a two-level topic model that includes the citation information for ‘father' topics and text information for sub-topics. The model parameters are estimated by a collapsed Gibbs sampling algorithm. We also propose a topic evolution algorithm that runs in two steps: topic segmentation and topic dependency relation calculation. We have tested the proposed citation-content-LDA model and topic evolution algorithm on two online datasets, IEEE Transactions on Pattern Analysis and Machine Intelligence(PAMI) and IEEE Computer Society(CS), to demonstrate that our algorithm effectively discovers important topics and reflects the topic evolution of important research themes. According to our evaluation metrics, citation-content-LDA outperforms both content-LDA and citation-LDA.

关键词： Topic extraction Topic evolution Evaluation method

Interaction between a Dark Septate Endophytic Isolate from Dendrobium sp. and Roots of D. nobile Seedlings

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Journal of Integrative Plant Biology 2009年第4期51卷 374-381页

作者： xiao-Qiang hou Shun-Xing Guo Institute of Medicinal Plant Development the Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100094 China

Interactions between an isolate of dark septate endophytes （DSE） and roots of Dendrobium nobile Lindl. seedlings are reported in this paper. The isolate was obtained from orchid mycorrhizas on Dendrobium sp. in subtropical forest. The fungus formed typical orchid mycorrhiza in aseptic co-culture with D. nobile seedlings on modified Murashige-Skoog （MMS） medium. Anatomic observations of the infected roots showed that the DSE hyphae invaded the velamen layer, passed through passage cells in exodermis, entered the cortex cells, and then formed fungal pelotons of orchid mycorrhiza. D. nobile seedlings＇ plant height, stem diameter, new roots number and biomass were greatly enhanced by inoculating the fungus to seedlings. The fungus was identified as Leptodontidium by sequencing the polymerase chain reaction-amplified rDNA ITS1-5,8S-ITS2 （internal transcribed spacer （ITS）） regions and comparison with similar taxa.

关键词： dark septate endophytes Dendrobium nobile fugal inoculation intemal transcribed spacer molecular identification archid mycorrhiza plant growth.

Biomimetic Shoulder Complex Based on 3-PSS/S Spherical Parallel Mechanism

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Chinese Journal of Mechanical Engineering 2015年第1期28卷 29-37页

作者： hou Yulei hu Xinzhe ZENG Daxing Zhou Yulin School of Mechanical Engineering Yanshan University

The application of the parallel mechanism is still limited in the humanoid robot fields, and the existing parallel humanoid robot joint has not yet been reflected the characteristics of the parallel mechanism completely, also failed to solve the problem, such as small workspace, effectively. From the structural and functional bionic point of view, a three degrees of freedom（DOFs） spherical parallel mechanism for the shoulder complex of the humanoid robot is presented. According to the structure and kinetic characteristics analysis of the human shoulder complex, 3-PSS/S（P for prismatic pair, S for spherical pair） is chosen as the original configuration for the shouder complex. Using genetic algorithm, the optimization of the 3-PSS/S spherical parallel mechanism is performed, and the orientation workspace of the prototype mechanism is enlarged obviously. Combining the practical structure characteristics of the human shouder complex, an offset output mode, which means the output rod of the mechanism turn to any direction at the point a certain distance from the rotation center of the mechanism, is put forward, which provide possibility for the consistent of the workspace of the mechanism and the actual motion space of the human body shoulder joint. The relationship of the attitude angles between different coordinate system is derived, which establishs the foundation for the motion descriptions under different conditions and control development. The 3-PSS/S spherical parallel mechanism is proposed for the shoulder complex, and the consistence of the workspace of the mechanism and the human shoulder complex is realized by the stuctural parameter optimization and the offset output design.

关键词： shoulder complex biomimetics spherical parallel mechanism

CRD-CGAN:category-consistent and relativistic constraints for diverse text-to-image generation

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Frontiers of Computer Science 2024年第1期18卷 61-75页

作者： Tao hu Chengjiang LONG Chunxia xiao College of Intelligent Systems Science and Engineering Hubei Minzu UniversityEnshi 445000China School of Computer Science Wuhan UniversityWuhan 430072China Key Laboratory of Performing Art Equipment&System Technology Ministry of Culture and TourismBeijing 100007China Meta Reality Labs BurlingameCA94010USA

Generating photo-realistic images from a text description is a challenging problem in computer *** works have shown promising performance to generate synthetic images conditional on text by Generative Adversarial Networks(GANs).In this paper,we focus on the category-consistent and relativistic diverse constraints to optimize the diversity of synthetic *** on those constraints,a category-consistent and relativistic diverse conditional GAN(CRD-CGAN)is proposed to synthesize K photo-realistic images *** use the attention loss and diversity loss to improve the sensitivity of the GAN to word attention and ***,we employ the relativistic conditional loss to estimate the probability of relatively real or fake for synthetic images,which can improve the performance of basic conditional ***,we introduce a category-consistent loss to alleviate the over-category issues between K synthetic *** evaluate our approach using the Caltech-UCSD Birds-200-2011,Oxford 102 flower and MS COCO 2014 datasets,and the extensive experiments demonstrate superiority of the proposed method in comparison with state-of-the-art methods in terms of photorealistic and diversity of the generated synthetic images.

关键词： text-to-image diverse conditional GAN relativi-stic category-consistent

Discovery of human pancreatic lipase inhibitors from root of Rhodiola crenulata via integrating bioactivity-guided fractionation,chemical profiling and biochemical assay

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Journal of Pharmaceutical Analysis 2022年第4期12卷 683-691页

作者： Li-Juan Ma Xu-Dong hou xiao-Ya Qin Rong-Jing He Hao-Nan Yu Qing hu xiao-Qing Guan Shou-Ning Jia Jie hou Tao Lei Guang-Bo Ge Shanghai Frontiers Science Center of TCM Chemical Biology Institute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghai201203China Department of Endocrinology Putuo HospitalShanghai University of Traditional Chinese MedicineShanghai200062China College of Basic Medical Sciences Dalian Medical UniversityDalian116044China Qinghai Hospital of Traditional Chinese Medicine Xining810099China

Although herbal medicines(HMs)are widely used in the prevention and treatment of obesity and obesity-associated disorders,the key constituents exhibiting anti-obesity activity and their molecular mechanisms are poorly ***,we assessed the inhibitory potentials of several HMs against human pancreatic lipase(hPL,a key therapeutic target for human obesity),among which the root-extract of Rhodiola crenulata(ERC)showed the most potent anti-hPL *** this study,we adopted an integrated strategy,involving bioactivity-guided fractionation techniques,chemical profiling,and biochemical assays,to identify the key anti-hPL constituents in *** ERC fractions(retention time=12.5e35 min),obtained using reverse-phase liquid chromatography,showed strong anti-hPL activity,while the major constituents in these bioactive fractions were subsequently identified using liquid chromatography-quadrupole time-of-flight mass spectrometry(LC-Q-TOF-MS/MS).Among the identified ERC constituents,1,2,3,4,6-penta-O-galloyl-β-D-glucopyranose(PGG)and catechin gallate(CG)showed the most potent anti-hPL activity,with pIC50 values of 7.59±0.03 and 7.68±0.23,*** investigations revealed that PGG and CG potently inhibited hPL in a non-competitive manner,with inhibition constant(Ki)values of 0.012 and 0.082 mM,***,our integrative analyses enabled us to efficiently identify and characterize the key anti-obesity constituents in ERC,as well as to elucidate their anti-hPL *** findings provide convincing evidence in support of the anti-obesity and lipid-lowering properties of ERC.

关键词： human pancreatic lipase Rhodiola crenulata 1,2,3,4,6-Penta-O-Galloyl-β-D-glucopyranose Catechin gallate Inhibitory mechanism