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| 1 | Some open problems in granular matter mechanics显示文摘Granular matter is a large assemblage of solid particles, which is fundamentally different from any other type of matters, such as solid and liquid. Most models presented for granular matter are phenomenological and are only suitable for solving engineering problems. Many fundamental mechanical problems remain open. By analyzing characteristics of internal state structure, we propose that granular matter is intrinsically multiscale, i.e. microscale of particle size, mesoscale of force chain, and macroscale of the bulk of granular matter. The correlations among difference scales would be crucial. The mesoscale force chain network is determined by both particle properties and macroscopic boundary conditions. The evolution of the force the chain network contributes to macroscopic mechanical properties of granular matter. In addition, we discuss the drawbacks in simplifying contact forces in the current models, and the difficulties in analyzing the interaction of interstitial fluid in wet granular matter. As an appropriate application of granular matter, debris flow can be studied with granular matter mechanics; meanwhile, debris flow brings more challenges which certainly motivate future studies on granular matter. | Qicheng Sun a, Guangqian Wanga, Kaiheng Hub a Department of Hydraulic Engineering, State Key Laboratory for Hydroscience and Engineering, Tsinghua University, Beijing 100084, China b Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China | 2009 | Progress in Natural Science:Materials International2009，19，5： | 25 |
| 2 | 一种基于DCT域特征块的抗几何攻击的视频水印显示文摘针对现有大部分抗几何攻击的水印技术不具有实时嵌入的特性,提出了一种新颖的基于DCT域特征块的抗几何攻击的视频水印方案。该算法在DCT域中通过选取一定的特征块作为水印嵌入点,再利用由特征块计算得到的同步块来在水印检测前进行几何校准,即在检测端首先定位特征块,再由此计算得到同步块,并对同步块采用邻域搜索方法精确估计视频帧的几何失真。视频帧校准后,系统再次通过提取特征块来进行水印检测。实验表明,该水印方案能够有效地抵抗旋转、平移、缩放等基本几何攻击,并具有较好的实时性和安全性。 | 钱莉 刘文予 张帆 Matthias HUB | 2007 | 中国图象图形学报2007，12，5： | 4 |
| 3 | Archery Algorithm:A Novel Stochastic Optimization Algorithm for Solving Optimization Problems显示文摘Finding a suitable solution to an optimization problem designed in science is a major challenge.Therefore,these must be addressed utilizing proper approaches.Based on a random search space,optimization algorithms can find acceptable solutions to problems.Archery Algorithm(AA)is a new stochastic approach for addressing optimization problems that is discussed in this study.The fundamental idea of developing the suggested AA is to imitate the archer’s shooting behavior toward the target panel.The proposed algorithm updates the location of each member of the population in each dimension of the search space by a member randomly marked by the archer.The AA is mathematically described,and its capacity to solve optimization problems is evaluated on twenty-three distinct types of objective functions.Furthermore,the proposed algorithm’s performance is compared vs.eight approaches,including teaching-learning based optimization,marine predators algorithm,genetic algorithm,grey wolf optimization,particle swarm optimization,whale optimization algorithm,gravitational search algorithm,and tunicate swarm algorithm.According to the simulation findings,the AA has a good capacity to tackle optimization issues in both unimodal and multimodal scenarios,and it can give adequate quasi-optimal solutions to these problems.The analysis and comparison of competing algorithms’performance with the proposed algorithm demonstrates the superiority and competitiveness of the AA. | Fatemeh Ahmadi Zeidabadi Mohammad Dehghani Pavel Trojovsky Štěpán Hubálovsky Victor Leiva Gaurav Dhiman | 2022 | Computers, Materials & Continua2022，，7： | 2 |
| 4 | Evaluation of antioxidant and immuno-enhancing activities of Purslane polysaccharides in gastric cancer rats显示文摘 | Yunqiao Lia Yanke Hub Shaojun Shi | 2014 | International Journal of Biological Macromolecules2014，，68： | 1 |
| 5 | onversion under hydrogen of dichlorodifluoromethane over bimetallic Palladium Catalysts显示文摘 | CONQ B HUB S TOURNINGANT D | 1993 | Appl Catal:A1993，101，： | 1 |
| 6 | Three-dimensional graphene com- posite macroscopic structure for capture of caner cells显示文摘 | YIN S Y WU Y L HUB H | 2014 | Material Views2014，1，13： | 1 |
| 7 | Relevance of chaos in numerical solutions of quantum billiards 显示文摘 | LI B W ROBNIK M HUB B | 1998 | Phys Rev E1998，57，： | 1 |
| 8 | Spectral Simulation and Shock Absorber Entification 显示文摘 | SCHIEHLEN W HUB | 2003 | International Journal of Non -Linear Mechanics2003，38，： | 1 |
| 9 | Computer model of the interaction of human TFPI-2 Kunitz-type serine protease inhibitor with human plasmin显示文摘 | F Hubé P Reverdiau S Iochmann Y Gruel | 2003 | Thrombosis Research2003，，3： | 1 |
| 10 | Three-dimensional modeling of arc plasma and metal transfer in gas metal arc welding 显示文摘 | Xu G Hub J Tsai H L | 2009 | In- ternational Journal of Heat & Mass Transfer2009，52，78： | 1 |
| 11 | Effect of imbalance and intracluster correlation coefficient in cluster randomized trials with binary outcomes 显示文摘 | Chul Ahna Fan Hub Celette Sugg Skinner | 2009 | Computa:ional Statistics and Data Analysis2009，53，： | 1 |
| 12 | Imaging with terahertz waves显示文摘 | HUB B NUSS M C | 1995 | Opt Lett1995，20，16： | 1 |
| 13 | Development of a track tension moni- toring system in tracked vehicles on flat ground 显示文摘 | Hub K Cho B H | 2001 | Journal of Automobile Engineering2001，215，5： | 1 |
| 14 | Neighborhood satisfaction, physical and perceived naturalness and openness显示文摘 | HUB M NASAR J L CHUN B | 2010 | Journal of Environmental Psychology2010，30，1： | 1 |
| 15 | Polymerizable phospholipid analogues - new stable biomembrane and cell models 显示文摘 | HUB H H HUPFER B KOCH H | 1980 | Angew Chem Int Ed Engl1980，19，： | 1 |
| 16 | Certificateless signa- ture:a new security model and an improved generic construction 显示文摘 | HUB C WONG D S ZHANG Zhen-feng | 2007 | Designs Codes and Cryptography2007，42，2： | 1 |
| 17 | Ginsenoside Rg1 attenuates okadaic acid induced spatial memory impairment by the GSK3β/tau signaling pathway and the Aβ formation prevention in rats显示文摘 | Xiu-Yun Songa Jin-Feng Hub Shi-Feng Chua | 2013 | Eur J Pharmaco12013，710，15： | 1 |
| 18 | Effect of the metal-support interaction on the catalystic properties of palladium for the conversion of difluorodichloromethane with hydrogen:comparison of oxides and fluorides as supports显示文摘 | CONQ B FIGUERAS F HUB S | 1995 | J Phys Chem1995，99，11： | 1 |
| 19 | Integrated care programmes for chronically ill patients:a rev- iew of systematic reviews显示文摘 | Marielle Ouwens Hub Wollersheim Rosella Hermens | 2005 | International Journal for Quality in Health Care2005，17，2： | 1 |
| 20 | Mosquitoborne Viruses, Czech Republic, 2002显示文摘 | Hubálek Z Zeman P Halouzka J | 2005 | Emerg Infect Dis2005，11，1： | 1 |
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