In this arte, the author applies the geheral principles of toponymy,the philolgy and the basic linguistic theories. to analyse and compare the plaec names of Baiyue, the Baiyue language with The place names of the Zhu...In this arte, the author applies the geheral principles of toponymy,the philolgy and the basic linguistic theories. to analyse and compare the plaec names of Baiyue, the Baiyue language with The place names of the Zhuangs and Dongs and their languages. The author gives the proofs with various historic materials, legends, ethnology and archaeology,makes comprehensive investigations on the Baiyue place names before and in Qin Dynasty, sorts out, classfies and explains them and, according to these evidences, the author discusses some heat problems in the Baiyue history and the Baiyue nationality research.展开更多
The scientific names of organisms are key identifiers of plants and animals.Correctly treating scientific names is a prerequisite for biodiversity research and documentation.Here,we present an R package,’U.Taxonstand...The scientific names of organisms are key identifiers of plants and animals.Correctly treating scientific names is a prerequisite for biodiversity research and documentation.Here,we present an R package,’U.Taxonstand’,which can standardize and harmonize scientific names in plant and animal species lists at a fast speed and at a high rate of matching success.Unlike most of other similar R packages each of which works with only one taxonomic database,U.Taxonstand can work with all taxonomic databases,as long as they are properly formatted.Multiple databases for plants and animals that can be directly used by U.Taxonstand,which include bryophytes,vascular plants,amphibians,birds,fishes,mammals,and reptiles,are available online.U.Taxonstand can be a very useful tool for botanists,zoologists,ecologists and biogeographers to standardize and harmonize scientific names of organisms.展开更多
In the narrow, submarine, unstructured environment, the present localization approaches, such as GPS measurement, dead?rcckoning, acoustic positioning, artificial landmarks-based method, are hard to be used for multip...In the narrow, submarine, unstructured environment, the present localization approaches, such as GPS measurement, dead?rcckoning, acoustic positioning, artificial landmarks-based method, are hard to be used for multiple small-scale underwater robots. Therefore, this paper proposes a novel RGB-D camera and Inertial Measurement Unit (IMU) fusion-based cooperative and relative close-range localization approach for special environments, such as underwater caves. Owing to the rotation movement with zero-radius, the cooperative localization of Multiple Turtle-inspired Amphibious Spherical Robot (MTASRs) is realized. Firstly, we present an efficient Histogram of Oriented Gradient (HOG) and Color Names (CNs) fusion feature extracted from color images ofTASRs. Then, by training Support Vector Machine (SVM) classifier with this fusion feature, an automatic recognition method of TASRs is developed. Secondly, RGB-D camerabased measurement model is obtained by the depth map In order to realize the cooperative and relative close-range localization of MTASRs, the MTASRs model is established with RGB-D camera and IMU. Finally, the depth measurement in water is corrected and the efficiency of RGB-D camera for underwater application is validated. Then experiments of our proposed localization method with three robots were conducted and the results verified the feasibility of the proposed method for MTASRs.展开更多
With the arising global awareness of the ocean,relevant countries are competing to name the discovered undersea features at the international seabed areas in recent years.The Sub-Committee on Undersea Feature Names（S...With the arising global awareness of the ocean,relevant countries are competing to name the discovered undersea features at the international seabed areas in recent years.The Sub-Committee on Undersea Feature Names（SCUFN）is a joint organization under the Intergovernmental Oceanographic Commission of United Nations Educational,Scientific and Cultural Organization and the展开更多
文摘In this arte, the author applies the geheral principles of toponymy,the philolgy and the basic linguistic theories. to analyse and compare the plaec names of Baiyue, the Baiyue language with The place names of the Zhuangs and Dongs and their languages. The author gives the proofs with various historic materials, legends, ethnology and archaeology,makes comprehensive investigations on the Baiyue place names before and in Qin Dynasty, sorts out, classfies and explains them and, according to these evidences, the author discusses some heat problems in the Baiyue history and the Baiyue nationality research.
基金supported by the National Natural Science Foundation of China (32030068)the Shanghai Municipal Natural Science Foundation (20ZR1418100) to J.Z.
文摘The scientific names of organisms are key identifiers of plants and animals.Correctly treating scientific names is a prerequisite for biodiversity research and documentation.Here,we present an R package,’U.Taxonstand’,which can standardize and harmonize scientific names in plant and animal species lists at a fast speed and at a high rate of matching success.Unlike most of other similar R packages each of which works with only one taxonomic database,U.Taxonstand can work with all taxonomic databases,as long as they are properly formatted.Multiple databases for plants and animals that can be directly used by U.Taxonstand,which include bryophytes,vascular plants,amphibians,birds,fishes,mammals,and reptiles,are available online.U.Taxonstand can be a very useful tool for botanists,zoologists,ecologists and biogeographers to standardize and harmonize scientific names of organisms.
基金the National Natural Science Foundation of China (Nos. 61773064, 61503028)Graduate Technological Innovation Project of Beijing Institute of Technology (No. 2018CX10022)National High Tech. Research and Development Program of China (No. 2015AA043202).
文摘In the narrow, submarine, unstructured environment, the present localization approaches, such as GPS measurement, dead?rcckoning, acoustic positioning, artificial landmarks-based method, are hard to be used for multiple small-scale underwater robots. Therefore, this paper proposes a novel RGB-D camera and Inertial Measurement Unit (IMU) fusion-based cooperative and relative close-range localization approach for special environments, such as underwater caves. Owing to the rotation movement with zero-radius, the cooperative localization of Multiple Turtle-inspired Amphibious Spherical Robot (MTASRs) is realized. Firstly, we present an efficient Histogram of Oriented Gradient (HOG) and Color Names (CNs) fusion feature extracted from color images ofTASRs. Then, by training Support Vector Machine (SVM) classifier with this fusion feature, an automatic recognition method of TASRs is developed. Secondly, RGB-D camerabased measurement model is obtained by the depth map In order to realize the cooperative and relative close-range localization of MTASRs, the MTASRs model is established with RGB-D camera and IMU. Finally, the depth measurement in water is corrected and the efficiency of RGB-D camera for underwater application is validated. Then experiments of our proposed localization method with three robots were conducted and the results verified the feasibility of the proposed method for MTASRs.
基金Project of Mineral Exploration and Exploitation in the Area(DY135-ZC-01)support by COMRA
文摘With the arising global awareness of the ocean,relevant countries are competing to name the discovered undersea features at the international seabed areas in recent years.The Sub-Committee on Undersea Feature Names（SCUFN）is a joint organization under the Intergovernmental Oceanographic Commission of United Nations Educational,Scientific and Cultural Organization and the
