An NCME Instructional Module on Data Mining Methods for Classification and Regression

Data mining methods for classification and regression are becoming increasingly popular in various scientific fields. However, these methods have not been explored much in educational measurement. This module first provides a review, which should be accessible to a wide audience in education measurement, of some of these methods. The module then demonstrates using three real‐data examples that these methods may lead to an improvement over traditionally used methods such as linear and logistic regression in educational measurement.     

镜泊湖地区旅游地质研究

文章对镜泊湖地区的地质旅游进行了相关的论述，在此基础上对镜泊湖的地质成因、熔岩隧道、以及地下森林的形成过程作了进一步的研究，尤其对镜泊湖的火山活动时代进行了讨论。     

2001-2017年尼泊尔中部地区滑坡变化及其影响因素

滑坡是造成尼泊尔巨大经济损失和人员伤亡的主要地质灾害。目前,遥感方法对滑坡信息的识别、提取和监测具有巨大的潜力。基于随机森林模型的平均不纯度减少算法,选用NDBI、MNDWI、NDVI和红波段4个参数对Landsat遥感数据进行滑坡信息的初提取,同时借助目视解译得到滑坡的精提取结果。采用数据格网的方法将研究区划分为0.05°×0.05°的滑坡格网,并在不同土地覆盖类型中,对滑坡与降雨和温度进行偏相关分析。研究表明：1）尼泊尔中部地区的滑坡主要分布在海拔1 000~2 500 m,坡度20°~40°的范围内;2）相比其他土地覆盖类型,林地中滑坡数目与降雨的偏相关系数为0.671 5,而在草地中滑坡数目与温度的偏相关性最强,其偏相关系数为0.436 1;3）研究区片麻岩、页岩分布广泛,加之地震、断裂带、人类活动的影响,破坏边坡的稳定性,极易造成滑坡灾害。     

浙江省常绿阔叶林的物种组成和群落物种多样性--以若干保护较好的地区为例

常绿阔叶林是浙江省的地带性植被,在维护区域生态系统功能等方面起着重要作用.综合该省若干保护较好地区的样方资料,采用多项指标进行了物种多样性的测度,表明浙江省保护较好的常绿阔叶林区域是我国中亚热带东部物种多样性较高的区域之一,自然环境、群落小环境和人为干扰是影响多样性大小的重要因素,常绿阔叶林中的珍稀物种需要给予更多的关注与保护.     

Planting virtual lemons: performing forest protection in the context of political performativity

The socialist People’s Democratic Republic of Laos (Lao PDR) has some of the largest intact forests in Southeast Asia, yet these are being quickly depleted by illegal logging, slash-and-burn farming, increasing population pressures, monocrop plantations, mining and dam building. Foreign government and nongovernmental organizations stage “infotainment” theatre plays to educate and inform the Lao public of its role in protecting the forests even though government projects and concessions are the primary causes of forest destruction. Because all the nationally subsidized performing arts troupes are government mouthpieces they cannot critique the government’s role. Foreign aid agencies funding the dramas are also made complicit in the hypocrisy of promoting forest protection to those with the least power to do so, while both performers and spectators know who is profiting the most from the sale of forest products. This article examines theatrical performances regarding forest protection presented in this context of performativity in which the state manipulates socialist rhetoric to conceal its actions that enrich its officials and capitalist partners at the expense of the rest of the Lao public.     

黄土高原土石山区退耕还林对农户福祉的影响研究——以宁武县为例简

基于退耕还林引起的土地利用变化的基础上,采用参与式农村评估的方法,对其生态系统服务变化和农户福祉的变化进行分析,并探讨了二者的关系。主要结论如下：退耕还林以来宁武县土地生态系统服务因子均发生变化,提供食物产品服务明显降低,消遣和生态旅游服务明显提高;研究区农户福祉处于较低水平,各村庄存在明显的空间异质性;各福祉要素中,健康状况、资源安全和环境安全三项福祉要素的空间分异较小,其他要素空间分异较大;2001-2011年,研究区农户福祉从36.61增长到40.40,增长率为10.35%,各要素中变化最显著的是收入水平和生产资料满意度,其中收入水平呈现正增长,生产资料满意度呈现负增长;对农户福祉影响较显著的生态系统服务因子依次为消遣和生态旅游,食物产品供给、处理废弃物、气候调节和非食物产品供给。     

银西城市防护林景观设计与生态旅游规划研究

通过对银西城市生态防护林地理位置、生态旅游所具备优势和条件的调查,在可持续发展的基础上提出了局部范围内开展生态旅游的可行性,并对银西防护林景观生态旅游进行了初步规划。     

发展多种经营 重振森工企业

我国森工企业以往是以采伐为主，现在面临资源危困。走出困境，重振森工企业关键在于寻找可持续发展的新出路。无论是历史和现实，要求发展多种经营已成为必然。     

所罗门群岛的森林资源开发与保护

独立后,所罗门群岛的热带雨林日益为澳洲、亚洲木材商所垂涎,森林的盗伐滥伐愈发严重。旅游业已成为岛上重要的产业。围绕森林资源的利用与保护,岛上的政府、居民、来岛的游客、环境保护组织等众多个体间时有冲突。从文化角度追根溯源,探询这些冲突背后深层次的历史渊源和现实原因,有助于寻找多方合作的认知基础和可能性。     

COMPREHENSION

正A We find many kinds of animals on the earth.Some animals,like tigers,and elephants,live in big forests.They are called wild(野生的)animals.Some others,like cows and dogs,live with man and we call them domestic(驯养的)animals.Animals are important to man.Man catches wild animals for fur(毛皮)and meat.Domestic animals give man food,too.They are more important than wild animals.Without them life would be hard.