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Updating conventional soil maps by mining soil–environment relationships from individual soil polygons

Journal of Integrative Agriculture 2019年第2期18卷 265-278页

作者： CHENG Wei ZHU A-xing QIN Cheng-zhi QI Feng State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China Key Laboratory of Virtual Geographic Environment Ministry of EducationNanjing Normal UniversityNanjing 210023P.R.China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023P.R.China Department of Geography University of Wisconsin-MadisonMadison 53706USA School of Environmental and Sustainability Sciences Kean UniversityUnion 07083USA

Conventional soil maps contain valuable knowledge on soil–environment *** knowledge can be extracted for use when updating conventional soil maps with improved environmental *** methods take all polygons of the same map unit on a map as a whole to extract the soil–environment *** approach ignores the difference in the environmental conditions represented by individual soil polygons of the same map *** paper proposes a method of mining soil–environment relationships from individual soil polygons to update conventional soil *** proposed method consists of three major ***,the soil–environment relationships represented by each individual polygon on a conventional soil map are extracted in the form of frequency distribution curves for the involved environmental ***,for each environmental covariate,these frequency distribution curves from individual polygons of the same soil map unit are synthesized to form the overall soil–environment relationship for that soil map unit across the mapped *** lastly,the extracted soil–environment relationships are applied to updating the conventional soil map with new,improved environmental data by adopting a soil land inference model(SoLIM)*** study applied the proposed method to updating a conventional soil map of the Raffelson watershed in La Crosse County,Wisconsin,United *** result from the proposed method was compared with that from the previous method of taking all polygons within the same soil map unit on a map as a *** results with independent soil samples showed that the proposed method exhibited better performance and produced higher accuracy.

关键词： update conventional soil map soil–environment relationships knowledge extraction individual soil polygons

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基于polygons的写实人物建模

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科技资讯 2017年第30期15卷 235-235,237页

作者：李盛随州职业技术学院湖北随州441300

对于三维动画的人来说,创造出一个属于自己的写实角色是每个人的梦想。即能够把角色制作的十分真实,就像真的生活在现实生活中一样,这类角色的结构一般都极为准确,准确到每一块肌肉、每一条血管、甚至每一条衣服上的褶皱。本文以实现一... 详细信息

对于三维动画的人来说,创造出一个属于自己的写实角色是每个人的梦想。即能够把角色制作的十分真实,就像真的生活在现实生活中一样,这类角色的结构一般都极为准确,准确到每一块肌肉、每一条血管、甚至每一条衣服上的褶皱。本文以实现一个真实的人物建模为项目,完整的讲解了人物建模的整个流程。整个流程分为五个步骤:搭建基本几何人体,细化几何人体,基本四肢的制作,头部的制作,手脚的制作,最终完成了整个人体的建模。本文重点研究了在进行多边形建模的过程中怎么根据人体骨骼,肌肉的走向来进行合理的布线。

关键词： Maya polygons 人体建模

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A new definition and calculation for the average normal to a polygon

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Science China(Technological Sciences) 2000年第5期43卷 519-523页

作者：梁友栋 State Key Laboratory of CAD&CG Department of Mathematics Zhejiang University Hangzhou 310027 China

This paper presents a new definition of the average normal to a polygon by introducing a cone bounded by the polygon, computing its normals and averaging the result. The equivalence of this new definition and that of Newell’s is given, and a simple calculation based on this new definition is obtained and 3 N additions and N subtractions are saved, where N is the number of the vertices of the polygon.

关键词： computer graphics polygons average normal.

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Thermodynamic Characterization of Planar Shapes and Curves, and the Query of Temperature in Black Holes

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Journal of Applied Mathematics and Physics 2021年第8期9卷 2004-2037页

作者： Güngö r Gündüz Orta Doğ u Teknik Ü niversitesi Ankara Turkey

The purpose of this research is to characterize shapes in thermodynamic terms, namely, in terms of total energy, dissipative energy, entropy, and temperature. As case studies, polygons and some well-known curves were taken, and they were characterized using physical terms. The relation between entropy and curvature was elucidated, and the black hole surface gravity and temperature were criticized and reinterpreted from this point of view. Particular energy attributions were evaluated by comparing the position of any edge of a polygon (i.e. its angle with the horizontal axis) with a broken crystal surface. Energies of all edges were added up at all positions between 0˚ - 360˚. In regular polygons, the total energy decreases with the increase of the number of edges. Entropy increases in the reverse order, and the increase of the number of edges increases entropy. It implies that the circle has the lowest energy but the highest surface entropy. In curves (circle, sine-curve, spiral, and exponential curve), the total energy, dissipative energy, and entropy all depend on amplitude and also on specific variables. Black hole entropy expressed in terms of the surface area is a configurational entropy and not thermal entropy;therefore, it does not involve a varying temperature term. The surface gravity of a black hole is connected to acceleration and thus to curvature. To relate it with the temperature needs to be reinterpreted, because, surface gravity behaves like an attractive force not exactly like temperature. Hawking radiation is still possible, but the black hole does not get warmer as it evaporates. Material loss from the black hole gets faster as its radius decreases due to the curvature effect, i.e. by a mechanism similar to the Gibbs-Thomson effect.

关键词： polygons Curves Viscoelasticity Energy Entropy Temperature Black Hole

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Longest Hamiltonian in N<sub>odd-</sub>Gon

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Open Journal of Discrete Mathematics 2013年第2期3卷 75-82页

作者： Blanca I. Niel Depto de Matemática Universidad Nacional del Sur Bahía Blanca Argentina

We single out the polygonal paths of nodd -1 order that solve each of the different longest non-cyclic Euclidean Hamiltonian path problems in networks by an arithmetic algorithm. As by product, the procedure determine... 详细信息

关键词： Hamiltonian Path Extremal Problems Euclidean Geometric Problem Farthest Neighbor Tours Traveling Salesman Problem Geometry of Odd Regular polygons

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