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| 1 | Copy-Paste Detection Based on a SIFT Marked Graph Feature Vector显示文摘To detect copy-paste tampering,an improved SIFT(Scale invariant feature transform)-based algorithm was proposed.Maximum angle is defined and a maximum angle-based marked graph is constructed.The marked graph feature vector is provided to each SIFT key point via discrete polar coordinate transformation.Key points are matched to detect the copy-paste tampering regions.The experimental results show that the proposed algorithm can effectively identify and detect the rotated or scaled copy-paste regions,and in comparison with the methods reported previously,it is resistant to postprocessing,such as blurring,Gaussian white noise and JPEG recompression.The proposed algorithm performs better than the existing algorithm to dealing with scaling transformation. | LYU Yingda SHEN Xuanjing CHEN Haipeng | 2017 | Chinese Journal of Electronics2017，26，2： | 6 |
| 2 | Bandgap prediction by deep learning in configurationally hybridized graphene and boron nitride显示文摘It is well-known that the atomic-scale and nano-scale configuration of dopants can play a crucial role in determining the electronic properties of materials.However,predicting such effects is challenging due to the large range of atomic configurations that are possible.Here,we present a case study of how deep learning algorithms can enable bandgap prediction in hybridized boron–nitrogen graphene with arbitrary supercell configurations.A material descriptor that enables correlation of structure and bandgap was developed for convolutional neural networks.Bandgaps calculated by ab initio calculations,and corresponding structures,were used as training datasets.The trained networks were then used to predict bandgaps of systems with various configurations.For 4×4 and 5×5 supercells they accurately predict bandgaps,with a R^(2) of >90% and root-mean-square error of~0.1 eV.The transfer learning was performed by leveraging data generated from small supercells to improve the prediction accuracy for 6×6 supercells.This work will pave a route to future investigation of configurationally hybridized graphene and other 2D materials.Moreover,given the ubiquitous existence of configurations in materials,this work may stimulate interest in applying deep learning algorithms for the configurational design of materials across different length scales. | Yuan Dong Chuhan Wu Chi Zhang Yingda Liu Jianlin Cheng Jian Lin | 2019 | npj Computational Materials2019，，1： | 5 |
| 3 | Brazing diamond grits onto AA7075 aluminium alloy substrate with Ag–Cu–Ti filler alloy by laser heating显示文摘The brazing of diamond is a promising way to fabricate grinding wheels for efficient machining and precision grinding.This work investigated the feasibility of bonding diamond grits onto Aluminium Alloy 7075(AA7075)substrate with a Ag–Cu–Ti filler alloy via laser fusion brazing.The interfacial microstructures and the strength of the brazed diamond joints were studied.The cross-section of the brazed diamond joint consists of a molten filler alloy layer,a molten pool,a heat effect zone,a columnar crystal zone and an equiaxed crystal zone.Within the interface of the filler alloy/substrate metal,microstructures observed possibly were Ag(s.s),Al(s.s),Tix Al,Al2 Cu and Mg intermetallic compounds.A layer of Ti C with a thickness of about 30–50 nm was found at the bonding interface of the diamond/filler alloy.The averaged peak shear force of the brazed joints was found to be approximately 39.8 N.The abrasion grinding test indicated that the diamond/AA7075 brazed joint was adequate for grinding.However,the pulled-off of grit was found to be the primary failure of this type of brazed joint.This work broadened the brazing diamond technique and the range of applications of brazed diamond wheels for efficient grinding. | Guoqin HUANG Yingda WANG Meiqin ZHANG Changcai CUI Zhen TONG | 2021 | Chinese Journal of Aeronautics2021，34，6： | 3 |
| 4 | Revealing the surface electronic structures of AIGaN deep-ultraviolet multiple quantum wells with lateral polarity domains显示文摘We report on the carrier dynamic and electronic structure investigations on AlGaN-based deep-ultraviolet multiple quantum wells (MQWs)with lateral polarity domains.The localized potential maximum is predicted near the domain boundaries by first-principle calculation,suggesting carrier localization and efficient radiative recombination.More importantly,lateral band diagrams of the MQWs are proposed based on electron affinities and valance band levels calculated from ultraviolet(UV)photoelectron spectroscopy.The proposed lateral band diagram is further demonstrated by surface potential distribution collected by Kelvin probe microscopy and the density-of-state calculation of energy bands.This work illustrates that lateral polarity structures are playing essential roles in the electronic properties of II nitride photonic devices and may provide novel perspective in the realization of high-efficiency UV emitters. | WEI GUO LI CHEN HOUQIANG XU YINGDA QIAN MOHEB SHEIKHI JASON HOO SHIPING GUO LIANG XU JIANZHE LU FERAS ALQATARI XIAOHANG LI KAIYAN HE ZHE CHUAN FENG JICHUN YE | 2020 | Photonics Research2020，8，6： | 2 |
| 5 | DSC analyses of static and dynamic precipitation of an Al-Mg-Si-Cu aluminum alloy显示文摘In the present investigation, both static and dynamic precipitations of an Al–Mg–Si–Cu aluminum alloy after solid-solution treatment(SST)were comparatively analyzed using differential scanning calorimetry(DSC). Dynamic aging was performed in the SST alloy through equal channel angular pressing(ECAP) at different temperatures of room temperature, 110, 170, 191 and 300 1C. For comparison, static artificial aging was conducted in the SST alloy at 191 1C with two aging times of 4 and 10 h. The DSC analyses reveal that the dynamic precipitation has occurred in the ECAPed samples, while the activation energies associated with the strengthening precipitates in the dynamic samples are considerably higher than the energies in the SST and static aged samples. The higher activation energies are probably attributed to the smaller grains and higher dislocation density developed after ECAP. The results in the present investigation allow the prediction of the type of the dynamic precipitates to influence the strength of the ultrafine grained alloy during ECAP at various temperatures. | Manping Liu Zhenjie Wu Rui Yang Jiangtao Wei Yingda Yu Pal C.Skaret Hans J.Roven | 2015 | Progress in Natural Science:Materials International2015，25，2： | 2 |
| 6 | Preparation and characterisation ofalumlnium nitride-titanium nitride composites显示文摘 | Inger-Lise Tangena Yingda Yub Tor Grandea | 2004 | J Eur Ceram Soc2004，，24： | 1 |
| 7 | 等离子弧焊熔敷Ti-6Al-4V合金原位拉伸过程中显微组织及应变响应的电子背散射衍射表征(英文)显示文摘航天级钛合金的新型叠层制造技术(ALM)的优势体现在较低的制造成本等方面,并可替代传统加工成型工艺。由等离子弧焊熔敷叠层制造技术制备Ti-6Al-4V合金的显微组织由定向凝固生长的β柱状晶及在其晶内生长的细小的α片层组织构成。在原位拉伸过程中结合应用高速离线电子背散射衍射表征(Offline EBSD)可快速获取试样显微组织和形变特征之间的关系。揭示出不均匀变形的发生取决于柱状晶界间的应变响应。柱状滑移和基面滑移系统被激活进而导致最后出现形变滑移线,即在某些柱状晶中滑移扩展至整个晶粒;而在另一些晶粒中表现为存在应变梯度和应力集中的地方发生形变失配。形变的扩展习性受制于定向凝固生长的柱状晶生长方向及其之间的界面取向关系。在垂直于柱状晶方向的拉伸试验揭示存在剧烈的变形局域化。基于原位拉伸观测及高速的离线电子背散射衍射表征结果,本文作者提出从微观到宏观形变扩展的控制机制。 | Martin BORLAUG MATHISEN Lars ERIKSEN Yingda YU Ola JENSRUD Jarle HJELEN | 2014 | Transactions of Nonferrous Metals Society of China2014，24，12： | 1 |
| 8 | Activation tagging, an efficient tool for functional analysis of the rice genome显示文摘 | Shuyan Wan Jinxia Wu Zhiguo Zhang Xuehui Sun Yaci Lv Ci Gao Yingda Ning Jun Ma Yupeng Guo Qian Zhang Xia Zheng Caiying Zhang Zhiying Ma Tiegang Lu | 2009 | Plant Molecular Biology (-)2009，，1： | 1 |
| 9 | Hydrothermal synthesis and characterization of KNbO3 nanorods 显示文摘 | Wang Guozhong Sverre Magnus Selbach Yu Yingda | 2009 | Cryst EngComm2009，11，： | 1 |
| 10 | Preparation and characterization of aluminum nitride-titanium nitride composites显示文摘 | Yingda Yu Tor Grande Ragnvald Hoier Mari-Ann Einarsrud | 2004 | Journal of the European Ceramic Society2004，，24： | 1 |
| 11 | A Game-Theoretic Analysis of Decode-and-Forward User Coop-eration显示文摘 | CHEN Yingda KISHORE S | 2008 | IEEE Transactions on Wireless Communications2008，，： | 1 |
| 12 | Psiguamers A-C, three cytotoxic meroterpenoids bearing a methylated benzoylphloroglucinol framework from Psidium guajava and total synthesis of 1 and 2显示文摘Three sesquiterpene-based meroterpenoids psiguamers A-C(1-3)with new skeletons were isolated from Psidium guajava leaves.Compounds(±)-1 and(±)-2 were two pairs of humulene-de「ived meroterpenoids bearing a rare methylated benzoylphloroglucinol unit,while 3 was an unprecedented adduct of bicyclogermacrene and methylated benzoylphloroglucinol.Their structures were determined based on comprehensive analyses of spectroscopic data,calculated electronic circular dichroism(ECD)spectra,total synthesis,and X-ray crystallographic data.The biomimetic synthesis of(±)-1 and(±)-2 was achieved.Compound(+)-1 exhibited cytotoxic activities against five human tumor cell lines(HCT-116,HepG2,BGC-823,A549,and U251),with IC_(50) values of 2.94,9.01,6.45,5.42,and 5.33 μmol/L,respectively. | Jiwu Huang Chuangjun Li Jie Ma Yingda Zang Xingyan Sun Xiaoguang Chen Dongming Zhang | 2021 | Chinese Chemical Letters2021，32，5： | 1 |
| 13 | Preparation and characterization of aluminum nitride-titanium nitride composites显示文摘 | Yingda Yu Tor Grande Ragnvald Hoier Mari-Ann Einarsrud | 2004 | Journal of the European Ceramic Society2004，，24： | 1 |
| 14 | The Emergence of Opinion Lead- ers in a Networked Online Community: A Dyadic Model with Time Dynamics and a Heuristic for Fast Estimation显示文摘 | Lu Yingda Jerath Kinshuk Singh Param Vir | 2013 | Management Science2013，，8： | 1 |
| 15 | 3D-QSAR study of corticotropin-releasing factor 1 antagonists and pharmacophore-based drug design 显示文摘 | Ye Yingda Liao Qinghua Wei Jing | 2010 | Neurochemistry International2010，56，1： | 1 |
| 16 | Wireless diversity through network Coding显示文摘 | Yingda Chen Shalince Kishore and Jing Li | 2007 | IEEE WCNC2007，，4： | 1 |
| 17 | Sintering of AlN using CaO-Al2O3 as a sinteringadditive:chemistry and microstructural development显示文摘 | Eirik H Yingda Y Grande T Ragnvald H Mari-AnnE | 2002 | Journal of the American Ceramic Society2002，85，12： | 1 |
| 18 | Substrate and Functional Diversity of Lysine Acetylation Revealed by a Proteomics Survey显示文摘 | Sung Chan Kim Robert Sprung Yue Chen Yingda Xu Haydn Ball Jimin Pei Tzuling Cheng Yoonjung Kho Hao Xiao Lin Xiao Nick V. Grishin Michael White Xiang-Jiao Yang Yingming Zhao | 2006 | Molecular Cell2006，，4： | 1 |
| 19 | Review of Renewal Design of Industrial Heritage from the Perspective of Green Buildings显示文摘With the acceleration of global economic development and urbanization,industrial transformation and the outstanding ecological environment problems have made industrial heritage renewal receive more and more attention.In recent years,the related research conducted from the perspective of green buildings has also become one of the new hotspots.In this paper,CiteSpace software was used to make an econometric analysis of the related research in this field from 2004 to 2022 in CNKI database from the number of published papers,keyword clustering and emergentwords,and a knowledge chart was drawn.Besides,the development process,evolution trend and frontier hot spot of related research were sorted out and summarized.The results show that ① the green renewal of domestic industrial heritage has experienced three stages:embryonic stage,exploration stage and outbreak stage.②The research focuses on experience summary and project practice exploration.③The research hotspots are mainly distributed in the directions of protection strategy,evaluation system construction,green transformation technology,urban renewal,etc.,and the perspective tends to be diversified and presents the trend of multi-disciplinary intersection.The shortcomings of the research are as follows:industrial heritage research and green building research are relatively independent,and no systematic theoretical system of green transformation of industrial heritage has been formed;there is a lack of relatively comprehensive reconstruction evaluation guidelines,andevaluation models of green transformation of industrial heritage at different levels have not been established. | LIU Yingda MA Xin YANG Xin | 2022 | Journal of Landscape Research2022，14，5： | 0 |
| 20 | Present Development Situation of Transgenic Crops and Effect on Ecological Environment显示文摘The present development situation of transgenic crops and their effect on ecological environment are introduced in the paper. Some relevant strategies for their future and how to control the risks of ecological environment are presented. | Wen Wujun 1 & Liang Hongming 2 1 Research Center for Sustainable Development of Shandong Province, Jinan 250014, China 2 Yingda Science and Technology Co. Ltd., Luneng Group, Jinan 250001, China | 2005 | Chinese Journal of Population,Resources and Environment2005，3，3： | 0 |
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