秋颂

一丝清凉,一片红色无意间从指间滑落,嗅到了缕缕清香,此时我知道已经迈入了迷人的秋季。老农总是期待秋季的到来,因为它带来了丰收的喜悦;园丁总是期待秋季的到来,因为她将得到辛勤的结果;商贾总是期待秋季的到来,因为它将带来火红兴隆;游子在     

听泉

如果不是远离街衢，如果不是这一条青灰色石子路牵引了我的目光，我们一定会忽视了这一眼泉水的存在。它是那么狭窄、细弱，一路涓涓然又活泼，穿行在浓密的灌木丛中，没有捎带一丝儿天边的云彩，和那山鸟的喧闹。     

野菜飘香

当下流行歌曲很多,歌词听不明白的也真不少。因为听不懂,自然减少了听歌的兴致。我想,这肯定不是我一个人的感觉或错觉。不像我儿时听的、唱的一些民歌,哪怕是山歌抑或民谣,上口,一学就会;朴实,令人难忘。挖野菜歌便是我记忆最深     

壶口感怀

车子在山中久久盘旋。四面是莽莽苍苍的山麓,山内是山,山外还是山,我们的车成了一只小小的甲虫,在无尽的峰峦间攀行。山与水总是相生相克的,有这些险象环生的山,必然有雄浑浩淼的水相伴。果然,有人说：前面是黄河。黄河,就是那我们梦里都无法忘却的母亲河!一座黄河大桥连接了山西与陕西两     

傣乡的竹

走进傣乡这片神奇的土地,便走进了竹的世界。     

感悟大海

我从小生活在平原的黄土地上。厚重的土地,滋养了我憨厚、负重的一面,但又缺少了水的灵性和感悟。因此,向往大海,走近大海,成了我多年的梦想。     

美丽的太阳

十月的一天去了海边,这是我第一次在秋天的季节里看大海。     

林中的树

栋梁之材,出自深山密林。资深的砍匠们都这么说。砍匠还说．独术孤树．很难找出成器的料子。     

系在心中的情结

20世纪50年代中期,当我还在读小学的时候,耳边就经常鸣响着向苏联老大歌学习的话。那时候,是多么向往苏联呀!过着吃窝头就咸菜穿补丁衣服的日子,想象着苏联小朋友天堂似的幸福生活,甭提多羡慕了。后来上了中学,又不断地受到俄罗斯文化的熏陶,其催人向上的歌曲、感人至深的小说、博大精深的绘画及高雅悦目的芭蕾等,更是     

井冈杜鹃红

早春时节,乍暖还寒,但五百里井冈却已是草长莺飞,山冈上一片嫩绿鹅黄。早上从南昌出发,紧赶慢赶,当车缓缓驶入井冈山市中心茨坪的时候,四周早已华灯灿灿,万家灯火了。匆匆吃过晚饭,便迫不及待地走出宾馆大门。     

洪水:避险与自救

<正>2100年入夏以来,我国南方数省市暴雨肆虐,6月21日傍晚,一个使人震惊的消息通过电视、广播和各种媒体迅速传遍全国,江西省境内的第二大河抚河抚州市唱凯堤发生决口,威胁下游临川区湖南、罗湖、唱凯、罗针和云山等5个乡镇14.5万人口,以及京福高速公路、316国道和12万亩粮田的安全。为此,一场抗洪抢险的战斗     

一种Timoshenko裂纹梁的静力挠度分析方法

建立了一种Timoshenko裂纹梁的分析模型并且获得了闭合形式的挠度解析解。首先,在一致梁的理论框架下,通过引入δ函数模拟裂纹导致的局部柔度,建立用广义函数表示的Timoshenko裂纹梁的微分控制方程,进而得到挠度的闭合形式的解答;其次,根据线弹性断裂力学理论,利用转角及挠度突变与局部柔度系数的关系,建立Timoshenko裂纹梁的模型参数与裂纹深度的显式表示;最后,通过对裂纹深度与挠度、转角和曲率间关系的分析,总结了结构响应的损伤敏感性及其特征,并且通过与引入裂纹奇异单元的有限元结果进行比较,验证了本文所建分析模型及求解方法的正确性。研究结果表明,本文所建立的Timoshenko裂纹梁的分析模型,具有较高的计算精度和效率,在结构模型修正和损伤识别中具有良好的应用前景。     

地震灾害紧急救援队伍救援行动的规范

介绍了制定地震灾害紧急救援队伍行动规范的背景,阐述了地震灾害紧急救援队伍行动的阶段,给出了地震现场灾害紧急救援队伍行动规范的内容。该规范将有效地规范和协调地震灾害紧急救援队伍的救援行动,提高救援能力与效率,最大限度地减少人员伤亡。     

Preparedness for emergency response: guidelines for the emergency planning process

Especially since the terrorist attacks of 11 September 2001, governments worldwide have invested considerable resources in the writing of terrorism emergency response plans. Particularly in the United States, the federal government has created new homeland security organisations and urged state and local governments to draw up plans. This emphasis on the written plan tends to draw attention away from the process of planning itself and the original objective of achieving community emergency preparedness. This paper reviews the concepts of community preparedness and emergency planning, and their relationships with training, exercises and the written plan. A series of 10 planning process guidelines are presented that draw upon the preparedness literature for natural and technological disasters, and can be applied to any environmental threat.     

Framework for integrating indigenous and scientific knowledge for disaster risk reduction

A growing awareness of the value of indigenous knowledge has prompted calls for its use within disaster risk reduction. The use of indigenous knowledge alongside scientific knowledge is increasingly advocated but there is as yet no clearly developed framework demonstrating how the two may be integrated to reduce community vulnerability to environmental hazards. This paper presents such a framework, using a participatory approach in which relevant indigenous and scientific knowledge may be integrated to reduce a community's vulnerability to environmental hazards. Focusing on small island developing states it presents an analysis of the need for such a framework alongside the difficulties of incorporating indigenous knowledge. This is followed by an explanation of the various processes within the framework, drawing on research completed in Papua New Guinea. This framework is an important first step in identifying how indigenous and scientific knowledge may be integrated to reduce community vulnerability to environmental hazards.     

Opportunities for British Involvement in the International Decade for Natural Disaster Reduction

The UK Science, Technology and Engineering Committee for the International Decade for Natural Disaster Reduction (IDNDR) was jointly established by The Fellowship of Engineering and The Royal Society, in 1990. Its purpose is to promote the aims of the IDNDR with particular reference to disaster risk reduction within developing countries.
In order to provide a forum for people with a wide range of experience in this field to meet and exchange views, the Committee convened a one-day Workshop, held at The Royal Society in London on 27 March 1992. The following is a shortened version of a position paper (originally drafted by Ian Davis and subsequently approved by the Committee), setting out seven 'priorities' for the IDNDR, which formed the basis of discussion at the Workshop.     

涝灾风险及排涝设计标准风险分析优选方法

由于自然灾害的随机性,任何排涝工程都是存在风险的。将风险分析方法引入排涝损失计算,以治涝费用与超标准涝灾损失之和最小为目标函数,提出了地区排涝设计标准的优选方法。在该优化方法中,以排涝设计标准P作为决策变量,建立了治涝费用、涝灾风险及超标准涝灾风险损失与决策变量之间的函数关系,为地区排涝标准的优化奠定了基础。实例应用表明,该方法使优选结果更加符合地区特性,改变了人为选定标准的随意性。     

长寿食品

绿茶：含茶多酚,可抗癌。研究表明,每天喝4杯绿茶,癌细胞不分裂,即使癌细胞分裂也要推迟9年以上。在日本,小学生每天到学校就要喝杯绿茶。绿茶中含氟能坚固牙齿,终生受益。绿茶中含单宁酸,可提高血管韧性,脑血管不易破裂。