创业投资辛迪加网络中控制权的演化博弈分析

创业投资的高风险性和信息不对称性使创业投资中控制权分配问题逐渐成为关系到风险投资项目成败的关键。本文运用演化博弈方法,分析控制权在辛迪加网络中两类创业投资家之间分配的博弈过程,得出在不同控制权分配比例下相应的演化稳定策略。在此结果上表明即期博弈中,创业投资家的私人收益和项目产出分配值的对比关系与控制权的分配密切相关。     

The saws of sawflies: exploring the morphology of the ovipositor in Tenthredinoidea (Insecta: Hymenoptera), with emphasis on Nematinae

The variation in ovipositor sculpture and additional features of the ovipositor apparatus in Tenthredinoidea is explored. Two outgroups and 85 species of tenthredinoids were examined, the emphasis of the taxon sampling being on Nematinae. Twenty-four morphological characters where scored and the data set was analysed under different weighting conditions. The topologies derived from analysing the character set in TNT are poorly resolved and highly unstable when analytical settings are changed. Only a few clades, the Tenthredinoidea s. str., the Diprionidae, the Cimbicidae and the Argidae + Pergidae are consistently retrieved. The functional implications of the variation in ovipositor morphology within Tenthredinidae is discussed in relation to the qualities of the host plant, e.g. the hardness and the depth of penetration in plant tissue.     

Predatory behaviour in Deltochilum: convergent evolution or a primitive character within a clade?

We present data on predatory behaviour in Deltochilum cupreicolle viridescens, which belongs to the subgenus Aganhyboma, and we contrast it with the behaviour of a species from the subgenus Deltohyboma. By this comparison we can investigate whether the predatory behaviour in Deltochilum could have appeared independently in these two subgenera, or if the behaviour is so similar that it suggests a single origin in a possible ancestor exclusive to those two groups. These laboratory studies on the behaviour of Deltochilum c. viridescens individuals on diplopods are described and divided into the following stages: (1) approach and recognition of the diplopod; (2) attack and death of the prey; (3) on-site feeding; (4) transport of the diplopod. The results found here strengthen the hypothesis of a primitive and highly specialized behaviour within a possible clade formed by the predatory species of Diplopoda.     

多重审视下的民间伦理效应——论《柳家大院》的叙事伦理

老舍短篇小说《柳家大院》讲述了北平一个“狗窝”般的大杂院中,公公和小姑子虐待小媳妇至死的故事,其以独特的叙事视角建构了叙述者与隐含作者的距离与冲突,营造了“看与被看”的多重审视模式.《柳家大院》因此激发着读者的同情、悲愤、无奈与哀叹的道德反应,呈现了老舍小说叙事的民间伦理.     

四卡问题的新视角——社会契约理论

Cosmides所提出的社会契约理论表明,人的推理能力具有领域特殊性的和内容依赖性。这不仅挑战了传统的推理假设,更以一种超越常规的方式促进了心理学特别是认知和发展心理学的发展。     

高校思想政治课程“以人为本”思想基础的建构

针对高校思想政治课程理论性强,内容抽象枯燥,难以达到预期教学效果的问题,结合教学实际,从教育者和受教育者两方面剖析了当前思想政治课程的现状,指出了思想政治课程缺失的原因是内容与方法不能与时俱进,提出了以学生实践经验为基础、以学生情感为出发点,指导学生世界观、人生观、价值观的形成,促进师生间精神上的信任与理解的建构路径,为提高高校思想政治课程的实效性提供借鉴.     

多元视角看自然: 论吴明益《复眼人》的艺术特色

吴明益的长篇小说《复眼人》延续了作者以往的自然书写，但又注入了他对环境议题更多元的思考。本文主要分析《复眼人》的艺术技巧，以及对比吴明益早期的同名短篇小说《复眼人》，了解吴明益观察世界的多元视角，以及他对生态理念和人性的深入探索。     

Dynamic Niching Genetic Algorithm with Data Attraction for Automatic Clustering

A genetic clustering algorithm was developed based on dynamic niching with data attraction. The algorithm uses the concept of Coulomb attraction to model the attraction between data points. Then, the niches with data attraction are dynamically identified in each generation to automatically evolve the optimal number of clusters as well as the cluster centers of the data set without using cluster validity functions or a variance-covariance matrix. Therefore, this clustering scheme does not need to pre-specify the number of clusters as in existing methods. Several data sets with widely varying characteristics are used to demonstrate the superiority of this algorithm. Experimental results show that the performance of this clustering algorithm is high, effective, and flexible.     

基于路面垂直轮廓建模的一般路面逆透视变换

摘要：
提出了一种由单帧立体图像实现一般路面图像逆透视变换的方法.针对双目视觉得到的路面垂直轮廓进行B样条建模，利用建模得到的路面高度代入路面图像成像过程中，从而实现一般路面的逆透视变换.实验表明，通过该方法能有效地实现上下坡等一般路面图像的逆透视变换. 关键词：
逆透视变换; 鸟瞰图; 道路建模; 双目视觉 中图分类号： TP 391.4; TB 133
文献标志码： A     

中文句子视点流动的三个向度

中文句子和欧洲语言的句子，在视点的安排上有很大的差异，集中体现了中西文化不同的思维方式。中文句子的视点，相对于欧洲语言句子的静态视点，是具有流动性的动态视点。中文句子的流动，依托自然的声气单位——句读段，既在流动的顺次中体现事理逻辑，又在流动的局势中体现表达功能。这种局势体现为三个向度，即在表面上流水潺潺的句读段铺排中，因句子表达功能的不同，而有动向、名向和关系向三种不同的铺排格局。