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  • Sexual deception: Coevolution or inescapable exploitation?

    Jussi LEHTONEN,Michael R. WHITEHEAD[ - 动物学报(英文版)
    文章来源: 万方数据
  • The Evolutionary Strategy of Deception

    Carita LINDSTEDT,Mikael MOKKONEN,Guest Editors - 动物学报(英文版)
    文章来源: 万方数据
  • 论发明人的"个体选择"

    对比自然选择,在技术进化过程中,常见的选择来自于社会选择.相比于社会的群体选择,发明人的个体选择同样重要.发明人的选择实现了可表达的新技术基因的形成,影响着技术进化的进程.发明人的选择受其目标准则的影响,与发明人的自身能力素质和外部的社会环境息息相关.要实现国家整体技术水平的提升,必须要重视发明人的工作,应从整体环境营造入手,为发明人提供做出创新性工作的有效空间.
    杨中楷,徐梦真,韩爽 - 科学学研究
    文章来源: 万方数据
  • 区域地壳稳定性评价研究进展与问题,兼谈规范编制

    区域地壳稳定性评价是工程地质重要的分支学科,是在我国几十年的工程地质实践中发展起来的一项特有的区域工程地质理论方法体系,在重大工程场地选址、国土资源规划、减灾防灾等地质工作中发挥了积极的作用,已经形成了一套较完善的理论方法,被广大工程地质工作者所广泛接受使用.本文通过对区域地壳稳定性研究的回顾和总结,划分了理论发展的四个阶段:上世纪50~70年代的孕育期、60~ 80年代的形成期、80年代~21世纪初的发展期、21世纪以来的徘徊期,并分析了目前区域地壳稳定性研究存在的主要问题.在此基础上,结合中国地质调查局第一部区域地壳稳定性调查评价规范的制定,对规范的社会需求、编制理念、主要内容结构等进行了说明,对存在较大争议的问题进行了探讨并给出解决意见,目的为这项我国特有的区域工程地质理论的发展和规范的贯彻实施助一臂之力.
    姚鑫 - 地质论评
    文章来源: 万方数据
  • 在大学英语综合课中训练写作元认知策略

    本文借鉴国内外有关元认知和学习策略理论的研究成果,结合近年来写作教学改革,尝试利用大学英语综合课教学进行元认知策略培训,以写作训练为立足点,探索以写作为突破口的大学英语教学模式.
    石倩 - 西南民族大学学报(人文社会科学版)
    文章来源: 万方数据
  • Habitat-dependent diversification and parallel molecular evolution: Water scavenger beetles as a case study

    Habitat shift is a key innovation that has contributed to the extreme diversification of insects. Most groups are well-adapted to more or less specific environments and shifts usually only happen between similar habitats. To colonize a pro- foundly different habitat type does not only present ecological opportunities but also great challenges. We used Hydrophiloidea (water scavenger beetles) as a system to study transitions between terrestrial and aquatic environments. We estimated the diversi- fication rate of different clades using phylogenetic trees based on a representative taxon sampling and six genes. We also investi- gated possible evolutionary changes in candidate genes following habitat shifts. Our results suggest that the diversification rate is relatively slow (0.039-0.050 sp/My) in the aquatic lineage, whereas it is distinctly increased in the secondarily terrestrial clade (0.055-0.075 sp/My). Our results also show that aquatic species have a G (Glycine) or S (Serine) amino acid at a given site of COI, while terrestrial species share an A (Alanine) amino acid with terrestrial outgroups. This indicates that habitat factors may create selection pressure on the evolution of functional genes and cause homoplasy in molecular evolution [Current Zoology 60 (5): 561-570, 2014 ]
    Ke-Qing SONG,Huai-Jun XUE,Rolf G BEUTEL,Ming BAI,Dong-Ju BIAN,Jie LIU,Yong-Ying RUAN,Wen-Zhu LI,Feng-Long JIA,Xing-Ke YANG - 动物学报(英文版)
    文章来源: 万方数据
  • Ecological and evolutionary connections between morphology, physiology, and behavior

    1 Introduction
    Phenotype variation within populations both provides the raw material for and is the product of evolutionary change. An individual's phenotype, defined as the amalgamation of morphology, physiology, and behavior, is highly complex. It has been common to try to isolate each of these aspects of phenotype rather than directly examine their integration. For example, despite the demonstrated importance of single aspects of phenotype for acquiring mates it is well known that signal traits are not evaluated in isolation, but rather in conjunction with associated behaviors, and sometimes with other signal traits (Moiler and Pomiankowski, 1993; Candolin, 2003;
    Rebecca J. SAFRAN,Maren N. VITOUSEK,Guest Editors - 动物学报(英文版)
    文章来源: 万方数据
  • Differential Evolution with Adaptive Mutation and Parameter Control Using Levy Probability Distribution

    贺仁杰,杨振宇 - 计算机科学技术学报(英文版)
    文章来源: 万方数据
  • 基于游客行为态度转变的保护区游客管理策略研究-以浙江天目山保护区游客触摸古树行为为例

    游客行为态度会对游客行为产生很大影响,转变游客行为态度会对游客行为管理工作有积极的作用.以态度形成与改变理论为基础,提出信息交流策略、活动参与策略和角色扮演策略等游客行为管理策略,以期为保护区游客管理提供新思路.
    符全胜,胡瑞明 - 林业经济
    文章来源: 万方数据
  • 一类带有隔离和分布时滞的SIQRS的传染病模型的稳定性分析

    提出一类含有分布时滞和隔离的传染病模型,利用构造李亚普诺夫泛函的方法,得到无病平衡点和地方平衡点全局渐近稳定性的结论,并讨论了永久免疫时,系统无病平衡点的指数稳定性.
    朱春娟 - 生物数学学报
    文章来源: 万方数据
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