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Geometric prior guided hybrid deep neural network for facial beauty analysis

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CAAI Transactions on Intelligence Technology 2024年第2期9卷 467-480页

作者： Tianhao Peng Mu Li Fangmei Chen Yong Xu david zhang The School of Computer Science and Technology Guizhou UniversityGuiyangChina Department of Automation Moutai InstituteRenhuaiGuizhouChina The School of Computer Science and Technology Harbin Institute of TechnologyShenzhenShenzhenChina The Information and Communication Engineering Department Dalian Minzu UniversityDalianChina The School of Data Science The Chinese University of Hong KongShenzhenShenzhenChina

Facial beauty analysis is an important topic in human *** may be used as a guidance for face beautification applications such as cosmetic *** neural networks(DNNs)have recently been adopted for facial beauty analysis and have achieved remarkable ***,most existing DNN-based models regard facial beauty analysis as a normal classification *** ignore important prior knowledge in traditional machine learning models which illustrate the significant contribution of the geometric features in facial beauty *** be specific,landmarks of the whole face and facial organs are introduced to extract geometric features to make the *** by this,we introduce a novel dual-branch network for facial beauty analysis:one branch takes the Swin Transformer as the backbone to model the full face and global patterns,and another branch focuses on the masked facial organs with the residual network to model the local patterns of certain facial ***,the designed multi-scale feature fusion module can further facilitate our network to learn complementary semantic information between the two *** model optimisation,we propose a hybrid loss function,where especially geometric regulation is introduced by regressing the facial landmarks and it can force the extracted features to convey facial geometric *** performed on the SCUT-FBP5500 dataset and the SCUT-FBP dataset demonstrate that our model outperforms the state-of-the-art convolutional neural networks models,which proves the effectiveness of the proposed geometric regularisation and dual-branch structure with the hybrid *** the best of our knowledge,this is the first study to introduce a Vision Transformer into the facial beauty analysis task.

关键词： deep neural networks face analysis face biometrics image analysis

Fast and convergence-guaranteed algorithm for linear separation

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Science China(Information Sciences) 2010年第4期53卷 729-737页

作者： zhang david Center for Multimedia Signal Processing/Department of Computing Hong Kong Polytechnic University

Efficient linear separation algorithms are important for pattern classification applications. In this paper, an algorithm is developed to solve linear separation problems in n-dimensional space. Its convergence feature is proved. The proposed algorithm is proved to converge to a correct solution whenever the two sets are separable. The complexity of the proposed algorithm is analyzed, and experiments on both randomly generated examples and real application problems were carried out. While analysis shows that its time complexity is lower than SVM that needs computations for quadratic programming optimization, experiment results show that the developed algorithm is more efficient than the least-mean-square (LMS), and the Perceptron.

关键词： linear separation problem classification convergence efficiency complexity

达格列净在血糖控制不佳肥胖2型糖尿病患者临床治疗中的效果观察

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反射疗法与康复医学 2024年第16期5卷 75-77+92页

作者：岳晓燕张大卫荣成市人民医院内分泌风湿病科荣成市人民医院心内科

目的探讨达格列净在血糖控制不佳肥胖2型糖尿病患者临床治疗中的效果。方法选择2022年10月—2023年10月该院收治的104例肥胖2型糖尿病患者为研究对象，按随机数字表法将其分为对照组与观察组，各52例。对照组采用二甲双胍缓释片治疗... 详细信息

目的探讨达格列净在血糖控制不佳肥胖2型糖尿病患者临床治疗中的效果。方法选择2022年10月—2023年10月该院收治的104例肥胖2型糖尿病患者为研究对象，按随机数字表法将其分为对照组与观察组，各52例。对照组采用二甲双胍缓释片治疗，观察组采用二甲双胍缓释片联合达格列净治疗。比较两组血糖指标、血脂指标、胰岛功能指标、身体质量指数、腹围指标及不良反应发生情况。结果治疗前，两组血糖指标、血脂指标、胰岛功能指标、身体质量指数及腹围指标比较，组间差异无统计学意义（P>0.05）：治疗后，观察组空腹血糖、糖化血红蛋白、总胆固醇、甘油三酯、低密度脂蛋白胆固醇、胰岛素抵抗指数、身体质量指数及腰围指标水平均低于对照组，胰岛β细胞功能指数、空腹胰岛素、空腹C肽水平均高于对照组，组间差异有统计学意义（P0.05）。结论达格列净治疗效果优于利格列汀，其降血糖、血脂及改善胰岛功能、减轻患者体重及缩小腹围的作用更佳，且安全性良好。

关键词： 2型糖尿病肥胖二甲双胍缓释片达格列净

New evidence for human occupation of the northern Tibetan Plateau,China during the Late Pleistocene

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Chinese Science Bulletin 2007年第19期52卷 2675-2679页

作者： YUAN BaoYin HUANG WeiWen zhang david Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China Department of Geography Hong Kong University Hong Kong China

The described stone artifacts are recovered from the 70 m-high terrace (4600 m a.s.l.) at the southeastern shore of the Siling Co on the northern Tibetan Plateau. The terrace was formed during the Interstadial period before the LGM, ca. 40-30 ka B.P. based on paleoenvironmental research. The Paleoliths from the Siling Co provide evidence for early human occupation of the northern Tibetan Plateau. They show technological and typological affinities with the European Middle Paleolithic suggesting that the early human occupation here might relate to migratory waves during the Late Pleistocene that dispersed humans across the Old World.

关键词：青藏高原微波旧石器时代地质

Downscaling and Disaggregating NAO-conflict Nexus in Pre-industrial Europe

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Chinese Geographical Science 2016年第5期26卷 609-622页

作者： Harry Fung LEE zhang david Dian PEI Qing FEI Jie Department of Geography and the International Centre of China Development Studies University of Hong Kong School of Environment and Natural Resources Renmin University of China Centre for Historical Geographical Studies Fudan University

Recently, the desiccation effect of the North Atlantic Oscillation(NAO) is found to be positively correlated with violent conflict in pre-industrial Europe, with agricultural shrinkage and its subsequent economic shocks to be their causal link. However, it remains unexplored whether the correlation persists if the study period is extended backward in time, a different definition of violent conflict is applied, or the relationship is examined at lower geographic levels. In this study, we based on 835 internal disturbance incidents in Europe during 1049–1800 to conduct long-temporal and multi-scalar examination on the NAO-conflict nexus. ′Time-series′ and ′panel data′ disaggregation approaches, together with Granger Causality, Multiple Regression, and Survival Analyses were applied to verify the nexus quantitatively. Results show that the positive NAO-conflict correlation was significant at the continent and physiographic zone levels. During the positive NAO phases, the annual probability of internal disturbance outbreak increased by 70.0% in the southern Europe and the Mediterranean, a zone most affected by the NAO-induced desiccation effect. Yet, the NAO-conflict correlation was rather inconsistent when it was downscaled to the sub-regional level. Moreover, the NAO-conflict correlation was inflated under the time-series approach, while the panel data approach demonstrated the region-specific nature of the NAO forcing more clearly. The associated implications in examining climate-conflict nexus are discussed. Our findings may be crucial in examining violent conflict in the northwestern Africa, a highly agricultural region affected by the NAO.

关键词： climate change North Atlantic Oscillation (NAO) violent conflict internal disturbance Europe

Dual relations in physical and cyber space

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Chinese Science Bulletin 2006年第1期51卷 121-128页

作者： XU Guangyou TAO Linmi zhang david SHI Yuanchun Key Laboratory of Pervasive Computing Ministry of Education Department of Computer Tsinghua University Beijing 100084 China Department of Computing Hong Kong Polytechnic University Hung Horn Kowloon Hong Kong

With the rapid development of computer, communication, and sensing technology, our living space has been transformed from physical space into a space shared by physical space and cyberspace. In the light of this fact and based on analyzing the char- acteristics of physical and cyberspace, respectively, this paper proposed that there are dual relations be- tween physical space and cyberspace. Establishing dual relations is realized in the following two processes: the process of information extraction, analysis and structurization from physical space to cyberspace and the process of providing the information services from cyberspace to physical space by means of inferring the intention, state and demand of users, as well. HCI (Human Cyberspace Interaction) in dual space means to establish the dual relations, which embodied the human centered HCI, i.e. the interaction is carried out in the way accustomed to users and without distract- ing their attention.

关键词：实际空间信息空间对偶关系传感技术

COMPETITION POLICY IN CHINA AND ITS RELEVANCE TO SMES

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Frontiers of Law in China-Selected Publications from Chinese Universities 2012年第1期7卷 21-38页

作者： Yahua zhang david K. Round 1. School of Accounting Economics and Finance University of Southern Queensland Toowoomba Australia 2. School of Commerce University of South Australia Adelaide Australia

Competition policy has great relevance to all the firms in any economy. Even though it is unlikely that small and medium-sized enterprises （SMEs） have enough market power to constrain competition through a misuse of such power, they may still face prosecution if they are involved in a boycott of competitors or suppliers, price-fixing, output-restriction and other monopoly agreements. This article discusses antitrust issues pertaining to SMEs with a focus on China＇s Anti-Monopoly Law （AML） and its implementation rules. Contrary to the popular view that SMEs benefit from competition laws, evidence shows that they are reluctant to get involved in antitrust litigation against large firms partly because of the high legal costs involved. There is an urgent need to promote an awareness of antitrust compliance in China and to educate SMEs about the need to avoid breaching the new antitrust law and its associated regulations. In the meantime, SMEs should take full advantage of the antitrust laws to fight against the abuse of market dominance directed at them, and to gain equal opportunities to market access.

关键词： SMALL BUSINESS ANTITRUST LAW EFFICIENCY WELFARE

Uncovering the functional basis of mantids that resemble plants

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Science China(Life Sciences) 2024年第1期67卷 215-216页

作者： Wei zhang david JLohman State Key Laboratory of Protein and Plant Gene Research School of Life SciencesPeking UniversityBeijing 100871China Peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100871China Biology Department City College of New YorkCity University of New YorkNew York 10031 USA PhD Program in Biology City University of New YorkNew York 10016 USA Entomology Section National Museum of Natural HistoryManila 1000Philippines

Convergent evolution frequently causes one species to look like another to increase its ***“adaptive resemblance”takes many forms:edible species mimic noxious ones to avoid predation;camouflaged patterns allow an organism to blend into its environment;and being mistaken for an inedible object allows a prey species to masquerade as a twig or dead *** resemblance is relatively common in insects,which comprise around 60%of known species.

关键词： species functional mimic

Selective metasomatism of ultramafic cumulates within Archean supracrustal sequences

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Geoscience Frontiers 2024年第5期15卷 283-299页

作者： Lingyu zhang Sampriti Basak david Zakharov Kristoffer Szilas Department of Geosciences and Natural Resource Management University of CopenhagenØster Voldgade 101350 CopenhagenDenmark Geological and Environmental Sciences Western Michigan UniversityKalamazooMI 49008USA

The Neoarchean StorøSupracrustal Belt in SW Greenland comprises a sequence of mature quartzite,metapelite,amphibolite,and ultramafic rocks that underwent amphibolite facies metamorphism during the amalgamation of the Mesoarchean Akia Terrane and the Eoarchean Færingehavn *** this belt,tourmaline is found in a transition zone between ultramafic and metapelitic rocks,but also occurs as orbicules within the ultramafic *** tourmaline orbicules hosted by ultramafic rocks are reported for the first time in the North Atlantic craton,thus indicating a unique formation *** conducted a comprehensive examination of the petrology,whole-rock and mineral chemistry,and oxygen isotope compositions from borehole samples in the StorøSupracrustal Belt,to elucidate the metasomatic events associated with the formation of the orbicular *** Storøultramafic rocks have high MgO,Cr,and Ni contents,with low abundances of REE and HFSE,and preserve a typical cumulate *** features are similar to those of ultramafic cumulates found in other Archean supracrustal belts,suggesting a cumulate origin for the Storøultramafic ***,the morphology and composition of the tourmaline orbicules within these cumulates indicate that they originated from melts with high boron and high water concentrations that infiltrated the ultramafic *** main factor influencing the morphology of the tourmaline orbicules is the silicification of the ultramafic rocks,driven by their lower chemical potential of SiO_(2)compared to the surrounding *** silicification process,in combination with compositional variations of cumulates during fractional crystallization,has contributed to the geochemical diversity observed in Archean ultramafic ***,it is crucial to understand the effects of such selective metasomatism on Archean ultramafic rocks,as this will facilitate the extraction of original information preserved in the early rock record.

关键词： Archean Ultramafic rocks Tourmaline Metasomatism Storø Greenland