微波遥感的发展与应用

微波遥感作为遥感技术的一个分支,是20世纪70年代发展起来的一门年轻的学科.着重以我国微波遥感发展的历程为例,回顾了三十多年来微波遥感领域学术与技术的迅速发展,比较分析了微波遥感对于可见光和红外遥感有着不可比拟的优越性,因而在海洋、冰雪、大气、测绘、农业、灾害监测等方面都有着广泛的应用.同时提出了目前我国在微波遥感领域存在的若干不足并指出了今后的研究方向.     

Undrained dynamical behavior of Nanjing flake-shaped fine sand under cyclic loading

A series of dynamic behavior tests on Nanjing flake-shaped fine sand were performed by using the WFI cyclic triaxial apparatus made in England. The dynamic behaviors of Nanjing flake-shaped fine sand under different static deviator stress levels and cyclic stress ratios were studied. Through comparing the effective stress path under cyclic loading with static loading, the processes of liquefaction of saturated Nanjing flake-shaped fine sand with development of dynamic pore-water pressure, including the initial compact state, compression state and dilative state, were investigated. The variation of the shear stiffness with the number of cycles and cyclic strain was investigated by analyzing the secant shear modulus in each unload-reload loop of dynamic stress-strain relationship. And by means of the exponential function, the empirical equations of the relationship between secant shear modulus Gsec, shear modulus ratio Gsec/Gmax and cyclic strain ε were established based on series of test results. The results show that according to different combinations of static deviator stress and cyclic stress, two kinds of failure patterns with deviator stress reversal or no deviator stress reversal are observed in the samples tested in this series, including cyclic mobility and the failure of accumulation residual strain. In addition, the degradation of dynamic shear modulus is due to the development of vibration pore-water pressure and it is observed that the shear modulus reduces with the progressive number of cycles.     

Sand deposit-detecting method and its application in model test of sand flow

Against the background of the sand-flow foundation treatment engineering of Guangzhou Zhoutouzui variable cross-section immersed tunnel, a kind of sand deposit-detecting method was devised on the basis of full-scale model test of sand-flow method. The real-time data of sand-deposit height and radius were obtained by the self-developed sand-deposit detectors. The test results show that the detecting method is simple and has high precision. In the use of sand-flow method, the sand-carrying capability of fluid is limited, and sand particles are all transported to the sand-deposit periphery through crater, gap and chutes after the sand deposit formed. The diffusion range of the particles outside the sand-deposit does not exceed 2.0 m. Severe sorting of sand particles is not observed because of the unique oblique-layered depositing process. The temporal and spatial distributions of gap and chutes directly affect the sand-deposit expansion, and the expansion trend of the average sand-deposit radius accords with quadratic time-history curve.     

Field study of plastic tube cast-in-place concrete pile

The compositions, technical principles and construction equipments of a new piling method used for ground improvement plastic tube cast-in-place concrete pile were introduced. The results from static load tests on single piles with different forms of pile shoes and on their composite foundations were analyzed. The distribution patterns of axial force, shaft friction and toe resistance were studied based on the measurements taken from buried strain gauges. From the point of engineering application, the pile has merits in convenient quality control, high bearing capacity and reliable quality, showing higher reasonability, advancement and suitability than other ground improvement methods. The pile can be adopted properly to take place of ordinary ground improvement method, achieving greater economical and social benefits.     

予岂好辩哉?予不得已也——《孟子》一书对孟子辩者形象的塑造

长于论辩,是《孟子》散文的突出特征.《孟子》一书通过对孟子言行的记录,不仅表现了孟子的思想和理论,亦成功地为后人展示了一个鲜活的辩者形象.孟子与时人的论辩涉及政治、经济、伦理道德、哲学等诸多领域;通过对旁征博引、因势利导、诱敌入彀、归谬反驳、执经行权等论辩方法的娴熟驾驭,表现出鲜明的个性特点.     

爱的阶梯——析克里斯蒂娜·罗塞蒂诗歌主题变换

克里斯蒂娜一生孤独迷离,她弃绝人间的舒适享乐全心追求永恒的精神快乐.诗歌是她生活的真实写照:从初恋失败,父亲病逝,到中年全方位的社交活动,再到孤独的晚年隐退.她的诗歌也呈现出统一协调的三部曲:从温婉细腻的抒情诗,到内涵丰富的叙事诗,再到热烈苍凉的祈祷文.爱是诗人背后最隐秘的缘由.为寻求心灵的平静,她试图在爱中找到永恒,却一次次被爱推着向前走:从人世爱恋到社会爱心,再回归上帝.     

Influencing factors of compressive strength of solidified inshore saline soil using SH lime-ash

Through unconfined compressive strength test,influencing factors on compressive strength of solidified inshore saline soil with SH lime-ash,ratio of lime-ash(1-K),quantity of lime-ash,age,degree of compression and salt content were studied.The results show that because inshore saline soil has special engineering characteristic,more influencing factors must be considered compared with ordinary soil for the perfect effect of solidifying.     

一种风幕式抽油烟机的实验研究

通过对厨房油烟扩散机理的分析和模型实验,研究了影响油烟控制的各种因素,采用实验与计算流体力学仿真技术相结合的方法,对不同情况下油烟罩的油烟控制性能进行了比较、分析,设计出了一种新型节能型抽油烟机。     

Creep testing and viscous behavior research on carbon constructional quality steel under high temperature

Creep tests under at a certain temperature and different stress levels were performed on two carbon constructional quality steels at a certain stress level and different temperatures,and their creep curves at high temperature were obtained based on analyzing the testing data.Taking 45 steel at a certain temperature and stress as the example,the integral creep constitutive equation and the differential stress-strain constitutive relationship were established based on the relevant rheological model,and the integral core function was also obtained.Simultaneously,the viscous coefficients denoting the viscous behavior in visco-plastic constitutive equation were determined by taking use of the creep testing data.Then the viscous coefficients of three carbon steels(20 steel,35 steel and 45 steel) were compared and analyzed.The results show that the viscosity is different due to different materials at the same temperature and stress.     

Optimization of rheological parameter for micro-bubble drilling fluids by multiple regression experimental design

In order to optimize plastic viscosity of 18 mPa·s circulating micro-bubble drilling fluid formula,orthogonal and uniform experimental design methods were applied,and the plastic viscosities of 36 and 24 groups of agent were tested,respectively.It is found that these two experimental design methods show drawbacks,that is,the amount of agent is difficult to determine,and the results are not fully optimized.Therefore,multiple regression experimental method was used to design experimental formula.By randomly selecting arbitrary agent with the amount within the recommended range,17 groups of drilling fluid formula were designed,and the plastic viscosity of each experiment formula was measured.Set plastic viscosity as the objective function,through multiple regressions,then quadratic regression model is obtained,whose correlation coefficient meets the requirement.Set target values of plastic viscosity to be 18,20 and 22 mPa·s,respectively,with the trial method,5 drilling fluid formulas are obtained with accuracy of 0.000 3,0.000 1 and 0.000 3.Arbitrarily select target value of each of the two groups under the formula for experimental verification of drilling fluid,then the measurement errors between theoretical and tested plastic viscosity are less than 5%,confirming that regression model can be applied to optimizing the circulating of plastic-foam drilling fluid viscosity.In accordance with the precision of different formulations of drilling fluid for other constraints,the methods result in the optimization of the circulating micro-bubble drilling fluid parameters.     

Interaction between transverse isotropy rock slope and supporting structure

In order to study the interaction between transverse isotropy rock mass and supporting structure,the laboratory tests for rock sampled from the slope at expressway project were carried out,and the parameters of elasticity for transverse isotropic rock were determined by the uniaxial compression tests for rock sample with different strike of stratification plane.Then,based on the relationship of stress-stain for transverse isotropic rock mass,the analytical model was established for the interaction between transverse isotropic rock mass and frame beam with pre-stressed anchor cable.Furthermore,the conception of the best anchorage-angle in pre-stressed anchor cable was proposed.At last,the parameters of the interaction between transverse isotropy rock mass and frame beam with pre-stressed anchor cable were investigated by finite element method,and the best anchorage-angle in pre-stressed anchor cable was obtained.The rules of the influence of the directivity of stratification plane on supporting structure were determined.The results show that the analytical model and numerical method on the design of pre-stressed anchor cable with frame beam supporting for transverse isotropy rock slope are reasonable and reliable in practical engineering design.     

屯堡服饰文化研究

在贵州安顺屯堡地区至今仍保留着被人们称为明代"活化石"的传统装束.但是目前这些服饰文化已经发生了很大的变化.本文介绍了屯堡地区女子"凤阳妆"、男子长衫、对襟短衣、战腰鞋以及扇背、风帽、口水兜、鞋垫、首饰等服饰的特点,分析了屯堡服饰变化的原因,并对其未来的发展提出了一些建议,以期促进屯堡服饰的开发与保护.     

欢迎投稿、订阅《武汉理工大学学报》

《武汉理工大学学报》是基础理论与应用科学相结合的综合性学术期刊。坚持以马列主义、毛泽东思想、邓小平理论和江泽民“三个代表”为指导思想，贯彻党的有关方针、政策。坚持“双百方针”，以促进科学与技术的发展、加强国内外学术交流为宗旨。重点刊登材料科学与工程、土木工程与建筑、资源与环境工程、船舶与海洋工程、能源与动力、汽车工程等学科的最新研究成果。     

杜诗"逃禅"一词议

"逃禅"一词出自杜甫《饮中八仙歌》,宋以后,文人多用之,但其意义却多有不同,历代注家对此词的理解也多有歧义.杜诗"逃禅",其义实为"逃出禅戒",后引申发展为"遁世而参禅事佛",即逃入禅,同时,在此基础上延伸出第三义:禅坐,有类似禅定之状态.     

现象学的意向性与诗审美意象的生成

诗的美产生于意向性,以有尽之言表无穷之意,以在场的意象表现不在场的情感世界.各个意象与其显现的整体意象之间相互作用,共同构成了诗篇.本文试从现象学的意向性角度探讨诗的美生成的哲学根源,并在一定程度上为人们对诗的认知提供一个较深入的新的视角.     

季文美逝世10周年忌日陕西省委统战部等向季文美铜像敬献花蓝

胡沛泉注:本报道标题及内容完全根据华东航空学院一九五二级、西安航空学院一九五七届校友联络组编的《校友联络通讯》2011年6月26日第87期的头条。值得注意的是出席敬献花蓝仪式的有:西工大原党委书记李保义,原副校长刘元镛、施作勤、肖一璋、郅保森,1952级(1957届)校友林崧、张长生、高光焘、丁毅生、张庆恩、张仲寅、郑泽尧。     

媒体对焦示范馆 四大新闻引关注

2011年8月6日上午,北京方庄桥西北角,鲜花簇拥,彩旗招展。中国红木古典家具精品示范馆盛大开业。在示范馆大门口,早就停放了联合传媒的直播车。地上铺上了红地毯,社会各界人士应邀而来参加了开业庆典。此次庆典尤其引来了《新京报》、《京华时报》、《消费日报》、《法制晚报》、《时尚家居》、《时尚芭莎》、新浪网、搜孤网、新华网等20多家媒体的疯狂采访,热闹场面激动人心。     

商品与质量【百字宣言】

真而实——是消费者来自心底层的渴盼!假而虚——是制假者来自血液里的卑鄙!不打假——其实商家都受害,不揭露——其实大家都遭殃;不打假——假品就会滥竽充数、鱼目混杂,     

湖南邮电职业技术学院2015年单独招生简章

一、学院介绍湖南邮电职业技术学院是湖南省示范性骨干高职院校,前身为湖南省邮电学校,创建于1958年,2001年升格为公办、全日制的普通高校（长沙通信职业技术学院）,2012年学院更名为“湖南邮电职业技术学院”。学院隶属中国电信湖南公司,教育业务由省教育厅管理。     

基于Solaris和OAS平台的OA系统功能的实现和优化

论述了OA系统设计应遵循的原则,从系统拓扑图、系统体系结构图、系统功能模块图等几个方面详细讨论了基于Solaris和OAS平台的OA系统的模型,重点介绍了OA系统功能和设计的实现及优化.该系统集合了多项技术的优势,确保了设计所要求的开放性、安全性、实用性和先进性.