Risk communication in South Korea: Social acceptance of nuclear power plants (NPPs)

The purpose of this study was to examine the effects of perceived efficacy, perceived risk, communication quality, and trust on social acceptance of nuclear power plants (NPPs) in South Korea. The results of this study indicated that perceived efficacy was most strongly related to social acceptance of NPPs. In addition, communication quality and trust mediated relationships among perceived efficacy, perceived risk, and social acceptance of NPPs. These results also provided practical implications for managing risk communication in South Korea.     

Branch plants and poverty in the American South

An alternative to the widely accepted hypothesis that big business has a negative impact on community welfare is tested with data from 445 nonmetropolitan counties in the American South. We argue that the appropriate counterhypothesis is not that branch plants have a positive impact on community welfare, because that and similar formulations simply perpetuate the nonsociological approach of the early hypotheses. An interaction formulation that sees community structure as mediating the impact of branch plants better explains differentials in our three criteria of welfare—per capita income, percent below the poverty line, and infant mortality. This explanation predicts positive welfare when pluralism and urbanization are high and branch plants are frequent, and lower welfare when one or both of these is low. Tests using discriminant analysis support the interaction hypothesis while providing little evidence for either the direct positive or negative impact hypotheses.     

The importance of traffic corridors as urban habitats for plants in Finland

Traffic corridors have been recognized as floristically rich with endangered and rare species included. The aim of this study is to treat traffic corridors as habitats and estimate their importance for diversity of vascular plants on municipal level. The material is derived from the comprehensive studies of urban floras in the cities of Vantaa, Kerava and Järvenpää during the 1990s in southern Finland. The material consists of over 190,000 species records (704–771 species). The material was divided in two groups: the ones with occurrences in traffic corridors (TC) and the others with no occurrences (NTC). The percentage of the traffic corridor plants of the total flora is almost the same in all the three cities: two thirds in traffic corridors and one third not in traffic corridors. The explanation may be the general floristic similarity of the cities. The two groups differ ecologically from each other. The association of plants with traffic corridors varies according to the ecology of the species. About 100 plants have more than 50% of their occurrences in traffic corridors. In Järvenpää, a group of four Carex-species was intensively mapped. 46 occurrences out of 50 were found in traffic corridors. A case study showed the difficulties in management of endangered species on a roadside site. The usual extensive management techniques were not sustainable for the survival of the species. Instead, a much more intensive management was needed.     

Market channel selections by US nursery plant producers: a multivariate nonparametric fractional regression analysis

Availability of market channel alternatives has helped the growth of ornamental plant sales in the United States. To identify the factors affecting the choice and allocation of outputs to different market channels by nursery producers, we first use a mixture of experts model to select clusters of homogenous subpopulations of US nursery producers based on a 2009 National Nursery Survey. The impact of growers’ business characteristics on shares of sales to these channels was estimated using multivariate parametric and nonparametric fractional regression models. Specification tests indicated a nonparametric model was superior to a parametric model in some clusters. Important explanatory variables affecting the sales volume to different channels were sales of plant groups, kinds of contract sales, promotional expenses, and farm size. Results indicated the existence of clear market segmentation of nursery producers in the United States.     

几种春季蜜源花粉的形态研究

报道十字花科、芸香科、无患子科和葫芦科的10种春季蜜源花粉的超微结构.结果显示,蜜源花粉粒较大,有明显的表面纹饰.     

城市植物景观规划浅析——以泰安市为例

泰安是位于泰山脚下的历史文化名城,规划与设计具有代表城市特色的植物景观对提高城市建设的水平,改进城市景观环境质量具有重要的指导和实践意义。本文以地带性植物为基础,结合泰山文化传统和城市总体规划及绿地系统规划,倡导群落式植物配置方式,创造适宜于城市发展的植物景观。     

珍稀濒危植物的濒危机制与保护对策

物种濒危机制是保护生物学所要解决的核心问题之一。简要介绍了植物保护中的一些基本概念,分析讨论了遗传力、生殖力、生活力、适应力的衰竭、人类直接干扰破坏、气候变迁、生境丧失、过度利用、物种入侵以及分类学家的局限等导致物种濒危的濒危机制。提出了就地保护、迁地保护、建立现代化离体保存基因库、加强珍稀濒危植物的繁殖和归化自然以及加强对珍稀濒危植物和野生植物资源的科学研究等保护对策。     

蒲宁笔下的乡土情怀

伊凡·蒲宁是第一个获得诺贝尔文学奖的俄罗斯作家,同时也是一位著名的乡土作家,以其创作与文本分析为基础,并从自然植物、自然动物、农民和童年等方面入手具体分析其作品中所蕴含的乡土深情。     

浅谈源于古希腊罗马神话中的英语词汇

希腊从氏族公社向奴隶社会过渡阶段创造了美丽的神话.它们在人类文化史上具有重要的地位和深远的影响.从语言学角度来看,直到今天,希腊罗马神话对欧洲人民的语言的影响也是巨大的.     

论同源词系联比较法与古汉语植物命名探求

名物考证,尤其是古汉语植物命名探求历来是传统语言学中公认的难题。从方法论的角度探讨科学的名物训诂方法是解决问题的关键。在古汉语植物命名探求中,传统训诂中的＂因声求义＂法,即同源词系联比较法具有特殊的作用：不仅可以避免声训法释名的偏误,还可以比较相似植物命名义的不同,在辨正释名的故训异说方面也有重要的价值。