费马大定理证明的历史评述

法国数学家费马于１６３７年提出了著名的费马猜想──费马大定理，已历时三百多年，有众多优秀的数学家为研究费马大定理倾注了大量的甚至是毕生的精力，但均未能最终证明费马大定理。文中就费马大定理证明的艰难历程作一历史性的评述。     

论江汉平原湖区洪水灾害及减灾措施——兼论荆江大堤堤背放淤

荆江大堤从江陵县西北的枣林岗到监利县的城关,长约180公里,是江汉平原的门户,它确保着江汉平原工农业生产与居民生命财产的安全。若一旦堤溃决口,洪水倾泻而入,江汉平原就成为一片汪洋,作者认为:当务之急,除已采取的大堤外脚河床深槽每年抛石50万方外,加固大堤内脚,填平大堤内脚下的深潭、巨塘、池沼凹地更为重要。     

High precision topographic data on Lop Nor basin＇s Lake ＂Great Ear＂ and the timing of its becoming a dry salt lake

High precision elevation measurements using DGPS were carried out along three representative tran-sects for the ＂Great Ear＂ area, a dry salt lake within the Lop Nor basin. Results indicate that the Lop Nor basin is only 5.2 m deep and its lowest point occurs at the center of the ＂Great Ear＂. In addition, the basin is asymmetric-steeper in the southwest （0.19‰） and gentler in the northeast （0.09‰）. Points along the same ＂Great Ear＂ ring were found to have an identical elevation value, but different when from different ones （lower towards the center）. The spacing of the ＂Great Ear＂ rings was found to be closely related with the surface steepness. The closer the ＂Great Ear＂ rings are spaced, the steeper the ground surface, and vice versa. These findings support the argument that the ＂Great Ear＂ rings are the former shoreline trails left behind by Lop Nor water during the last few episodes of recession towards its total dry up. A comprehensive analysis of the high precision elevation data, historical accounts, aerial and satellite photographs and imagery, and official topographic maps of the study area suggests that the ＂Great Ear＂ area in the Lop Nor basin was incorrectly mapped as being covered by a great body of water on the 1963 topographic maps. A re-interpretation of the 1958 aerial photographs and newer remote sensing imagery indicated that the ＂Great Ear＂ ring structure was already in place in 1958 and it continued to appear on the subsequent remote sensing data without any major changes. It is estimated that lake water in the ＂Great Ear＂ area of the Lop Nor basin disappeared between the late 1930s and early 1940s.     

长江大保护城市水管家模式及其实施路径探索

长江沿线城市水业（务）对长江大保护影响重大。基于当前长江大保护现状和城市环保及工程建设领域的社会第三方服务模式的发展态势,分析了新发展阶段社会第三方创新城市治水新模式需求,演绎了社会第三方参与长江沿线城市水系统建设新模式（即城市水管家）的理论基础;阐明了城市水管家概念、内涵及其基本特征,确立了城市水管家模式的基本要素及其框架结构体系;提出了城市水管家模式的应用条件、实施方式或路径,并探讨了近年来模式应用进展与实践推广前景。     

从玉器传播论华夏早期国家的建立

湮没在传说中的夏代，在古代文献记载中以华夏第一王朝的而广为人知，却在当代国际学界遭遇不能实证和不被承认的尴尬。缺乏文字材料的证实，对夏代纪年内中原政权所体现出的面貌，目前仅能通过考古学材料加以探索，即“四重证据法”中的第四重：文物与图像。而在利用物质材料进行实证研究的过程中，玉器作为前文字时代的重要礼器，其易于保存的特质和一贯至今的文化内涵成为理解夏史的重要载体。文章通过玉器的传播、玉礼器的文化内涵和早期国家的用玉特点，探讨从前二里头时代至二里头晚期的华夏早期国家形成条件。     

略论《大学》的“家国同构”思想——对“修齐治平”政治治理途径的一种解读

修身在齐家指出,只有通过修身培育道德感,才能营造道德的家庭生活,为个体实现其人生价值提供立足点。治国在齐家表明了儒家家国同构的基本内容,即,伦理理论上家国同理;社会观上家国一体;在政治生活中必须以大家为重,以恕道为行为指导。平天下在治国则突出了家国同构的文化含义,即,文化价值观的合理化对于实现一个德风开放的和谐社会具有重要意义。     

论《了不起的盖茨比》的理性主义主题

在20世纪20年代科技高度发达的社会里,人类的精神领域已被技术理性主义控制而产生了异化。《了不起的盖茨比》在某些程度上展现了理性与非理性的交锋,透过叙述者尼克的眼光表达了作者对理性主义抹杀人本能的非理性力量的斥责。     

New and little‐known species of Didemnidae (Ascidiacea,Tunicata) from Australia (part 4)

Forty‐eight species (including nine that are new) of the 288 Didemnidae now known from Australian waters are reported on in the present work. Dredged material is from benthic habitats in inter‐reefal areas of the Great Barrier Reef and from deeper water canyons off northeastern and northwestern Tasmania. Collections from shallower waters of Port Davey (western Tasmania) and Kangaroo Island (South Australia) were hand‐collected by scuba divers. Seven of the eight known genera of the Didemnidae are represented. Despite this emphasis on sampling in temperate waters, only 14 species (all indigenous) are recorded from around the southern half of the continent. The species diversity of this family is greater in the tropics, with 34 species being recorded. Nearly half of these are known also from the tropical western Pacific and some from the Indian Ocean as well. Tropical indigenous species are relatively few.