教师反馈对英语语音能力作用的实证研究

通过实证研究探讨教师反馈对英语语音学习的影响和二语语音能力构建的作用。认为:教师纠错性反馈不应该成为教师反馈的唯一途径,教师建议性反馈同样能够促进二语语音学习和习得;教师课堂的显性反馈和隐性反馈对于不同学习风格的学习者的语音能力有不同的构建作用;此外,不同层次的学习者因教师口头反馈、书面反馈和师生会谈等反馈方式的差异,二语语音能力发展也有所不同。     

基于中外五区比较的旅游劳工行业流动规律分析

以九寨沟为实证案例地,通过与我国九华山和国外匈牙利、英国萨默塞特和考文垂、加拿大温哥华岛的比较,探讨了不同背景下旅游劳工的行业流动模式、从业评价和驱动规律.研究发现:(1)旅游劳工转移产业分布十分宽广.国外商业、服务业占据了主导行业,衰落产业劳工占据1/10比例.我国农业、制造业占据主导行业,首次就业人群比例高,年轻女...     

基于游客满意度的旅游目的地转型升级策略研究——以郴州市为例

有关游客满意度的研究多以其评价模型或方法本身为研究对象,运用研究也往往是从归纳的角度,以实证检验为目的。而将它作为一般理论工具对相关问题进行演绎研究的文献尚不多见。论文以湖南省郴州市为例,采用模糊综合评价模型和方法,在对旅郴游客满意度进行定量评价的基础上,从演绎的角度,提出了更具针对性和操作性的郴州市旅游开发转型的相应对策。此研究思路也能为其他旅游目的地转型升级研究提供一种方法借鉴和决策辅助工具。     

枣庄市峄城区矿山开采现状与地质环境治理探讨

根据枣庄市峄城区矿山开采对地质环境造成的破坏及对矿业可持续发展调研分析,认为开采不仅对山体、植被等造成了直接破坏,还导致诸如地表塌陷、山体滑坡等安全隐患,矿山环境治理要从思想上、经费上、法律法规上、技术上入手解决,对已关停矿山地质环境治理,除加大宣传力度外,重点落实对矿山地质环境治理工作的责任、治理规划的编制实施,不断完善、探索治理方法和治理技术攻关及对策预案工作。     

梁子湖湿地保护与产业发展探析

梁子湖湿地丰富的野生动植物资源、水资源和景观资源是社会和经济发展的重要物质基础.长期以来,由于投入资金、管理及开发利用等方面的问题,如湿地保护的管理权分散、湿地产业粗放发展、功能定位不明确、湿地保护和产业开发的技术水平落后等,致使湿地保护与经济发展的矛盾日益突出.在分析梁子湖湿地现状的基础上,从发挥宏观政策作用与建立生...     

基于气象预警信息的大连气象微博评论情感分析及发布策略建议

微博在气象预警信息传播及气象部门收集社会公众信息反馈中发挥了积极作用,并产生了海量级的交互信息,客观分析此类信息对于气象部门及时引领舆论导向和调整发布策略具有较高的参考价值。文中基于2017年1月1日—2020年7月3日大连市重大气象灾害过程,运用自然语言处理、情感分析等方法对大连气象微博中与气象预警相关的评论内容进行情感分析研究。结果表明：公众关注最多的是天气预报准确率、天气过程对于生活影响以及信息发布的及时性。公众对重大天气过程特别是致灾天气过程本身负面评价多于正面,发布策略应根据气象灾害持续时间及时调整预警信息内容和发布频次;公众对大风、冰雹等气象灾害预警信号关注度随季节变化明显,发布策略应针对旅游业、养殖户、种植户等提出专业防范对策;针对发布频率高的大风预警信号,有必要调整业务发布规范,同时关注灾后事件信息的跟踪发布;研究发现,负面情感主要针对天气预报的准确度。     

NEW DEVELOPMENT PATTERN AND COORDINATION WITH ENVIRONMENT FOR GREAT SHANGHAI

The urban construction of Shanghai will come into a new area since China has deciared to exploit and open Pudong. Based on the analysis on economic development of China and the world, the developmental strategy for Shanghai should take the following contents into consideration: 1) Shanghai should be built into one of the most important intemational and modern supercity in Asian-Pacifie Region. 2) Shanghai should keep the position of the largest economic center of China and important port city for international trade. 3) Shanghai should be taken as growth pole of the Changjiang River Delta. According to the considderations mentioned above, the spatial distribution patten and the management of environment are discassed.     

Mobility of major ions and nutrients in the unsaturated zone during paddy cultivation: a field study and solute transport modelling approach

Study of the movement of water and solute within soil profiles is important for a number of reasons. Accumulation of prominent contaminants from agricultural chemicals in the unsaturated zone over the years is a major concern in many parts of the world. As a result, the unsaturated zone has been a subject of great research interest during the past decade. Hence, an intensive field study was conducted in a part of Palar and Cheyyar river basins to understand the variation of major ions and nutrients in the soil zone during paddy cultivation. The chloride and nitrate data were used to model the movement of these chemicals in the unsaturated zone using the HYDRUS‐2D model. The field study shows that fertilizer application and irrigation return flow increases the major ions and nutrients concentration in the unsaturated zone. Further, the nutrient concentrations are regulated by plant uptake, fertilizer application and infiltration rate. Additionally, denitrification and soil mineralization processes also regulate the nitrogen concentration in the unsaturated zone. The solute transport modelling study concluded that the simulated results match reasonably with the observed trends. Simulated concentrations of chloride and nitrate for a 5‐year period indicate that the concentrations of these ions fluctuate in a cyclic manner (from 60 to 68 mg l^?1 and from 3·4 to 3·5 mg l^?1 respectively in groundwater) with no upward and downward trend. The influence of excessive fertilizer application on groundwater was also modelled. The model predicts an increase of about 17 mg l^?1 of chloride and 2·3 mg l^?1 of nitrogen in the groundwater of this area when the application of fertilizers is doubled. The model indicates that the present level of use of agrochemicals is no threat to the groundwater quality. Copyright © 2007 John Wiley & Sons, Ltd.     

关于发展战略与信息化建设若干问题的研究

通过对发展战略的核心问题，信息化建设的竞争环境问题以及地区信息发展的战略选择问题的探讨，指出正确的发展战略是发展的最重要前提，只有关浪展战略，才能实现区域的发展优点，促进区经济的发展。