云南高原中小城市楚雄市风对大气污染物扩散的影响分析

利用楚雄市气象站1987-2007年观测资料中的风向资料来统计代表冬季的1月和代表夏季的7月的风向频率,冬夏两季节的盛行风向风呈90度角.据此从季风角度结合楚雄市的居住区分布现状提出适宜楚雄市居住区和工业区布局的模式及总体布局.利用楚雄市2006年环境监测污染物二氧化硫、二氧化氮和可吸入颗粒物日浓度资料和同步风资料分别分析风向风速与二氧化硫、二氧化氮和可吸人颗粒物浓度的关系,它们的浓度随风速风向的变化而变化.     

漳州市区大气臭氧污染特征分析

利用2014~2015年漳州市区蓝田、三中和九湖3个监测站大气污染物浓度资料,对近地面臭氧污染的变化特征和影响因素进行分析。漳州近地面臭氧浓度在夏季较低,而峰值主要出现在4月或10月。臭氧浓度与NO2浓度密切相关,在全年统计下呈正相关。当温度高于20°C,日照时数大于5h,风速小于2m/s时,漳州市区易形成臭氧污染天气。     

多站天气发生器在中国东部钱塘江流域降雨模拟的评估（英文）

研究目的:以空间相关系数、降雨量和降雨次数为指标,利用实测的气象数据,评估一个新的多站天气发生器GiST在中国东部钱塘江流域模拟降雨的性能。在此基础上,结合全球气候模式Hadgem2-ES,分析在浓度路径RCP 8.5下GiST模拟2071–2100年的降雨情况。创新要点:通过评估一个新的多站发生器在模拟降雨方面的性能,以此来提高未来气候情景预测的精度。研究方法:用多站天气发生器和变化因子方法,重点结合CMIP5中的Hadgem2-ES模型,模拟钱塘江流域七个站点的基准期以及未来预测期降雨量和空间相关性,并作出评估。重要结论:多站天气发生器GiST能很好地模拟钱塘江流域的降雨以及其空间相关性。该工具有潜力作为水资源管理,极端事件分析,政府决策、水文模型以及气候变化研究的工具。     

漳州市蓝田工业开发区

漳州市蓝田工业开发区是经福建省人民政府批准的省级市属重点开发区。2000年经市政府批准设立漳州市高科技产业开发区、漳州市台商投资工业区。总体规划面积中长期为5平方公里,远期10平方公里。其性质为:轻型、低耗、轻污染的外向型工业区。 蓝田工业开发区以优越的地理位置、完善的基础设施和高品味的服务质量,赢得中外客商的青睐。截至2001年底,共引进内外资     

主要气象因子对兰州市大气质量影响力的分析

建立基于投入产出方法的数学模型进行模拟和分析,具体方法是以风速、温差、相对湿度、非固定污染源排放量、某个时间段固定污染物的排放量作为投入因子,在兰州市的大气系统中,污染物和气象因子间相互作用,共同产生了空气污染指数(API).利用2011年4月21日²011年7月10日的观测数据,建立了空气污染指数与各投入因子间依存关系的数学模型,经过方差分析和数据拟合分析,证明所建立的模拟模型,研究主要气象因子对兰州市大气质量的影响力,具有较高的精度和可信度.     

初夏福州城郊乡村空气负离子浓度日变化规律——以孔元村、井下村为例

为探索福州市周边乡村空气负离子浓度变化特征,以孔元村、井下村为研究对象,选择五一游客游览高峰期,收集并分析5种游憩地12个监测点的空气负离子浓度和气象因子等数据,研究乡村空气负离子浓度日变化规律及空气负离子浓度变化与气象因子、游客游览行为间的相关性.结果表明:①初夏孔元村、井下村空气负离子浓度均值为3 383.49个/m3,达到对人体影响的I级标准;②不同游憩地类型,空气负离子日均浓度变化不同;③5类游憩地空气负离子浓度从高到低依次为水畔游憩地游憩林地硬质铺装游憩地庙内田园游憩地;④海拔、温度、气压、湿度等气象因子对空气负离子浓度影响较大,其中主要影响因子为温度和湿度;⑤乡村游憩地空气负离子浓度与游客行为活动关系密切,客流量大的监测点空气负离子浓度较低.     

主要气象因子对兰州市大气质量影响力的分析

建立基于投入产出方法的数学模型进行模拟和分析,具体方法是以风速、温差、相对湿度、非固定污染源排放量、某个时间段固定污染物的排放量作为投入因子,在兰州市的大气系统中,污染物和气象因子间相互作用,共同产生了空气污染指数(API).利用2011年4月21日²011年7月10日的观测数据,建立了空气污染指数与各投入因子间依存关系的数学模型,经过方差分析和数据拟合分析,证明所建立的模拟模型,研究主要气象因子对兰州市大气质量的影响力,具有较高的精度和可信度.     

南充市大气环境质量分析与评价

本文根据2007-2011年南充市二氧化硫、二氧化氮、可吸入颗粒物浓度的监测数据,综合运用大气环境质量指数评价法对南充市的大气环境质量进行分析与评价,并运用Spearman秩相关系数预测其发展趋势。结果表明:南充市大气环境质量为轻度污染,主要大气污染物为可吸入颗粒物和二氧化硫。二氧化氮基本无污染,但有上升趋势。二氧化硫呈不显著下降趋势,可吸入颗粒物呈上升趋势。     

气象因子在重污染天气模型中的应用研究

以合肥市冬季典型重污染天气为对象,运用大数据和计算机模拟合肥市冬季典型重污染天气分布格局,同时使用景观指数移动窗口方法对测试数据进行综合分析.通过对该地区的年均与不同季节内的各气象因子在空间中的浓度分布状态的研究,结果显示:气象因子对合肥市冬季典型重污染天气污染物浓度的变化影响显著,具有季节效应.同时该研究结果能够有效反映气象因子与合肥市冬季典型重污染天气特征间的关系,对指导改善城市污染具有重要的价值.     

一种高铁沿线湖泊环境微地形风速修正方法

为了实现微地形风场环境的精细化感知,保障高铁安全运行,开展了高铁沿线微地形风速修正研究。首先选取高铁目标站周边的气象参考站,从地统计学角度分析区域内阵风因子的分布特征及风速的变化特征;然后利用Copula函数对气压、气温、降水、相对湿度这4种气象要素与10 min平均风速进行相关性分析;最后提出了基于阵风因子和Copula函数协同多要素的湖泊环境微地形风速修正公式。结果表明：气温与风速呈正相关关系,相对湿度与风速呈负相关关系;所提风速修正方法对高铁沿线湖泊环境具有针对性,相较现有计算方法修正效果提升约20%。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.