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Reference direction based immune clone algorithm for many-objective optimization

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Frontiers of Computer Science 2014年第4期8卷 642-655页

作者： Ruochen LIU Chenlin ma fei HE Wenping ma Licheng JIAO Key Laboratory of Intelligent Perception and Image Understanding of Ministry of Education International Research Center for Intelligent Perception and Computation Xidian University Xi'an 710071 China

In this paper, a new preference multi-objective optimization algorithm called immune clone algorithm based on reference direction method （RD-ICA） is proposed for solving many-objective optimization problems. First, an intelligent recombination operator, which performs well on the functions comprising many parameters, is introduced into an immune clone algorithm so as to explore the potentially excellent gene segments of all individuals in the antibody pop- ulation. Second, a reference direction method, a very strict ranking based on the desire of decision makers （DMs）, is used to guide selection and clone of the active population. Then a light beam search （LBS） is borrowed to pick out a small set of individuals filling the external population. The proposed method has been extensively compared with other recently proposed evolutionary multi-objective optimization （EMO） approaches over DTLZ problems with from 4 to 100 objectives. Experimental results indicate RD-ICA can achieve competitive results.

关键词： many-objective optimization preference multiobjective optimization artificial immune system reference direction method light beam search intelligent recombination operator

Development of a New Cold-Tolerant maize(Zea mays L.)Germplasm Using the ICE1 Gene from Arabidopsis thaliana

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Phyton-International Journal of Experimental Botany 2022年第8期91卷 1709-1719页

作者： Jing Qu Shuang Liu peng Jiao Zhenzhong Jiang Jianbo fei Shuyan Guan Yiyong ma College of Agronomy Jilin Agricultural UniversityChangchun130118China College of Life Sciences Jilin Agricultural UniversityChangchun130118China

To develop cold-tolerant maize germplasms and identify the activation of INDUCER OF CRT/DRE-BINDING FACTOR EXPRESSION(ICE1)expression in response to cold stress,RT-PCR was used to amplify the complete open reading frame sequence of the ICE1 gene and construct the plant expression vector *** maize embryos and calli were transformed with the recombinant vector using Agrobacterium tumefaciens-mediated *** the regenerated plantlets,three T1 lines were screened and identi-fied by PCR.A Southern blot analysis showed that a single copy of the ICE1 gene was integrated into the maize(Zea mays L.)genomes of the three T1 *** low temperature-stress conditions(4°C),the relative conductivity levels decreased by 27.51%–31.44%,the proline concentrations increased by 12.50%–17.50%,the malondialdehyde concentrations decreased by 16.78%–18.37%,and the peroxidase activities increased by 19.60%–22.89%in the T1 lines compared with those of the control.A real-time quantitative PCR analysis showed that the ICE1 gene was ectopically expressed in the roots,stems,and leaves of the T1 ***1 positively regulates the expression of the CBF genes in response to cold ***,this study showed the successful transformation of maize with the ICE1 gene,resulting in the generation of a new maize germplasm that had increased tolerance to cold stress.

关键词： maize ICE1 cold tolerance inducer maize Arabidopsis thaliana

Patent expanded retrieval via word embedding under composite-domain perspectives

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Frontiers of Computer Science 2019年第5期13卷 1048-1061页

作者： fei WANG Tieyun QIAN Bin LIU Zhiyong peng School of Computer Science Wuhan University Wuhan 430072 China State Key Lab of Software Engineering Wuhan University Wuhan 430072 China

Patent prior art search uses dispersed information to retrieve all the relevant documents with strong ambiguity from the massive patent database. This challenging task con-sists in patent reduction and patent expansion. Existing stud-ies on patent reduction ignore the relevance between techni-cal characteristics and technical domains, and result in am-biguous queries. Works on patent expansion expand terms from external resource by selecting words with similar dis-tribution or similar semantics. However, this splits the rele-vance between the distribution and semantics of the terms. Besides, common repository hardly meets the requirement of patent expansion for uncommon semantics and unusual terms. In order to solve these problems, we first present a novel composite-domain perspective model which converts the technical characteristic of a query patent to a specific composite classified domain and generates aspect queries. We then implement patent expansion with double consistency by combining distribution and semantics simultaneously. We also propose to train semantic vector spaces via word em-bedding under the specific classified domains, so as to pro-vide domain-aware expanded resource. Finally, multiple re-trieval results of the same topic are merged based on perspec-tive weight and rank in the results. Our experimental results on CLEP-IP 2010 demonstrate that our method is very effec-tive. It reaches about 5.43% improvement in recall and nearly 12.38% improvement in PRES over the state-of-the-art. Our work also achieves the best performance balance in terms of recall, maP and PRES.

关键词： patent retrieval composite-domain perspective double-consistency expansion word embedding

Inception point of air entrainment over stepped spillways

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Journal of Hydrodynamics 2013年第1期25卷 91-96页

作者： WU Jian-hua ZHANG Bin ma fei College of Water Conservancy and Hydropower Engineering Hohai University

The location of the inception point of the air entrainment directly affects the energy dissipation ratio, the cavitation damage control, and the training wall height designs for a stepped spillway and a stilling basin. In this paper, the boundary layer theory of plates is used to predict the location of the inception point of the air entrainment over the stepped spillways by assuming the steps on the spillways as a kind of roughness. An empirical formula is presented based on the physical model experiments, with the maximum error less than 1% except at one point where the error is 1.6%, as compared to the experimental data. Meanwhile, it is shown that the location of the inception point of the air entrainment for the stepped spillway is much nearer to the top of the spillway than that for a smooth spillways, which explains why the high ratio of the energy dissipation is provided for the stepped spillway.

关键词： air entrainment cavitation energy dissipation inception point stepped spillway unit discharge

In Situ Synthesis of Block Copolymer Nano-assemblies by Polymerization- induced Self-assembly under Heterogeneous Condition

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Chinese Journal of Polymer Science 2017年第4期35卷 455-455,456-479页

作者： Sheng-li Chen peng-fei Shi 张望清 Key Laboratory of Functional Polymer materials of the Ministry of Education Institute of Polymer ChemistryNankai University Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Nankai University

Controlled synthesis of amphiphilic block copolymer nanoparticles in a convenient way is an important and interest topic in polymer science. In this review, three formulations of polymerization-induced self-assembly to in situ synthesize block copolymer nanoparticles are briefly introduced, which perform by reversible addition-fragmentation chain transfer （RAFT） polymerization under heterogeneous conditions, e.g., aqueous emulsion RAFT polymerization, dispersion RAFT polymerization and especially the recently proposed seeded RAFT polymerization. The latest developments in several selected areas on the synthesis of block copolymer nano-assemblies are highlighted.

关键词： Block copolymers Self-assembly Emulsion RAFT polymerization Dispersion RAFT polymerization SeededRAFT polymerization

New progress in understanding the origins of modern humans in China

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Science China Earth Sciences 2017年第12期60卷 2160-2170页

作者： GAO Xing peng fei FU QiaoMei LI Feng Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044 University of the Chinese Academy of Sciences Beijing 100049China Department of Early Prehistory and Quaternary Ecology University of TubingenTubingen 72070Germany

Hypotheses concerning the origins of modern humans have been intensively debated, and two competing models, the recent "Out-of-Africa" and "Multiregional Evolution" paradigms, have dominated research and discussions for decades. Evidence from China has played a fundamental role in this debate: regional continuity and replacement by populations in-migrated from Africa have both been suggested and supported mainly by paleoanthropologists and geneticists, respectively. As more evidence has accumulated, new results obtained, and more scholars from various disciplines become involved, supporters of the recent "Out-of-Africa" model agree more or less with the "Multiregional Evolution" model regarding the complex history of modern humans and their interbreeding with other archaic populations(e.g., Neandertals). Recent discoveries of new human fossils, Paleolithic archaeological materials, and ancient DNA evidence in China have yielded a large body of information regarding the formation and development of modern humans in this region. However, controversies continue, including that most molecular biologists insist on the replacement of archaic populations by modern humans dispersed from Africa, while most paleoanthropologists and archaeologists propose an enhanced "Continuity with Hybridization" model. In this paper, we compile new results and progress in China and present the current debates and issues on the origins of modern humans. Finally, we offer several suggestions for future studies.

关键词： China Origins of modern humans Modern behavior Recent out-of-Africa Continuity with hybridization Interdisciplinary research

Mesopolymer modified with palladium phthalocyaninesulfonate as a versatile photocatalyst for phenol and bisphenol A degradation under visible light irradiation

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Journal of Environmental Sciences 2013年第8期25卷 1687-1695页

作者： Rong Xing Lin Wu Zhenghao fei peng Wu Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection Yancheng Teachers University Yancheng 224002 China Shanghai Key Laboratory of Green Chemistry and Chemical Processes Department of Chemistry East China Normal University Shanghai 200062 China

A novel versatile photocatalyst, FDU-PdPcS, was prepared by immobilizing palladium phthalocyaninesulfonate （PdPcS） onto the FDU-15 mesopolymer via multi-step chemical modification processes involving chloromethylation of the FDU-15 mesopolymer first with chloromethyl methyl ether, a subsequent amination reaction with ethylenediamine, and finally modification with palladium phthalocyaninesulfonate via ionic interaction. The obtained FDU-PdPcS photocatalyst was characterized by the X-ray diffraction （XRD）, UV-Vis spectrosopy and inductively coupled plasma （ICP） techniques. This photocatalyst not only affords a high dispersion of monomeric PdPcS molecules, which may further be stabilized by the π-electron of benzene rings of FDU-15, but also provides a number of diamino groups inside the mesopores, which could be advantageous for the photodegradation of phenolic pollutants. In photodegradation studies of phenolic pollutants, the FDU-PdPcS catalyst exhibited excellent visible light photocatalytic activity and reusability. The photodegradation products of phenol and bisphenol A were investigated by the gas chromatoghraphy-mass spectrometry （GC-MS） technique. The results showed that the photodegradation products were composed of carboxylic acids and CO2. Isopropanol, sodium azide and benzoquinone were used as hydroxyl radical （OH.）, singlet oxygen （1O2） and superoxide radical （O2.-） scavengers, respectively. The results suggested that 1O2 and O2. were the prominent active species during the photodegradation process. A possible mechanism for the photodegradation of phenol was also discussed.

关键词： mesopolymer phthalocyanine photocatalysis visible light phenolic pollutants

A novel mutation of LIM2 causes autosomal dominant membranous cataract in a Chinese family

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International Journal of Ophthalmology(English edition) 2020年第10期13卷 1512-1520页

作者： Rui Pei peng-fei Liang Wei Ye Ji Li Ji-Yuan ma Jian Zhou Department of Ophthalmology Xijing HospitalFourth Military Medical UniversityXi’an 710032Shaanxi ProvinceChina Department of Otolaryngology Xijing HospitalFourth Military Medical UniversityXi'an 710032Shaanxi ProvinceChina

AIM:To identify mutations in the genes of a fourgeneration Chinese family with congenital membranous cataracts and investigate the morphologic changes and possible functional damage underlying the role of the mutant ***:Whole exome analysis of thirteen members of a four-generation pedigree affected with congenital membranous cataracts was performed;co-segregation analysis of identified variants was validated by Sanger *** members underwent detailed physical and complete eye *** physical changes caused by the mutation were analyzed in silico through homology *** lens fiber block from a patient was observed under a scanning electron microscope(SEM).Cell membrane proteins and cytoplasmic proteins from the human lenses donated by one patient with cataract in this family and from the dislocated lens resulted from the penetrating ocular trauma of a patient unrelated with this family were extracted,and the expression and localization of MP20 and Cx46 were detected by Western blot(WB)assay in these ***:A novel LIM2 heterozygous mutation(c.388 C>T,p.R130 C)was identified with congenital membranous cataracts inherited by an autosomal dominant(AD)*** and amblyopia were observed in all patients of this family,and exotropia and long axial length were observed in most patients.A/B ultrasound scan and ultrasound biomicroscopy revealed obvious thin crystalline lenses from 1.7 to 2.7 mm in central thickness in all cataract *** bioinformatic analysis showed that the mutation was deleterious to the physiological function of LIM2-encoded ***,by SEM,ultrastructure of the cataract nucleus showed that lens fiber cells(LFCs)remained morphologic characteristics of immature fiber cells,including flap cell surface with straight edges and lacking normal ball-and-socket joint boundaries,which implied that the differentiation of LFCs might be *** of MP20 and Cx46 in the cytoplasm was observe

关键词： LIM2 MP20 congenital cataract missense mutation differentiation

Domain Adaptive Semantic Segmentation via Entropy-Ranking and Uncertain Learning-Based Self-Training

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IEEE/CAA Journal of Automatica Sinica 2022年第8期9卷 1524-1527页

作者： Chengli peng Jiayi ma Electronic Information School Wuhan UniversityWuhan 430072China

Dear Editor,This letter develops two new self-training strategies for domain adaptive semantic segmentation,which formulate self-training into the processes of mining more training samples and reducing influence of th... 详细信息

关键词： false mining entropy