基于概率法的木构古建筑地震破坏综合评价方法

为了研究木构古建筑地震破坏状态评估的准确性,应用概率的方法,以结构损伤指数、最大层间位移角作为评价因子,建立了地震破坏综合评价模型,提出了基于概率法的木构古建筑地震破坏综合评价方法。该方法在综合现状分析与实验数据,在一定烈度下计算各种破坏状态等级中每一种破坏状态出现的概率,古建筑地震破坏状态应为概率最大的地震破坏状态,从而比较准确地判别木构古建筑地震破坏程度。并对经受过汶川地震的两种结构形式的古建筑进行了验证,从而验证了该方法的合理性和有效性。这一方法将提高木构古建筑震害预测的准确性,为古建筑抗震加固提供有效的理论支持。     

美国对外政策的理想主义与现实主义矛盾——以二战末期美国对华政策为中心的分析

理想主义和现实主义是美国对外关系中最重要传统,其内部蕴含着不可克服的矛盾,并在二战结束前后的美国对华政策中突出地表现出来,预示着美国在华政策失败的悲剧。     

陆贾的历史著述与历史思考

陆贾是一个有杰出建树的史学家。所著《楚汉春秋》虽已亡佚,但曾为后人撰写汉初历史提供了基本材料;《新语》以史论结合为特色,对汉初的政治实践产生了直接的影响。陆贾主张偃武修文,以无为而治的政策休养民力,治国以仁义为本。陆贾对历史有丰富而深刻的看法,他的历史观中有值得注意的唯物主义因素。     

故宫博物院藏《女史箴图》跋文所涉人名考

书画作品的跋文对于书画本身的研究非常重要.北京故宫博物院藏传顾恺之《女史箴图》,幅后有四篇跋文,跋文作者以及跋文里涉及数人大都属于元代到明初人.他们是谁?目前并没有专家学者深入研究.作者翻阅很多资料,从而探得跋文所涉人名情况.     

幕末与明治时期日本人的上海认识——从高杉晋作的《游清五录》到远山景直的《上海》

对于幕末与明治时期的日本人而言,上海首先是中国的上海;同时上海也是世界、尤其是西洋的上海,租界区域出现了与此前的中国本土迥然相异的新的样态;再次是与日本紧密相关的上海,19世纪末期以后,在虹口一带形成了以日本居留民为主体的日本人社会。这样一个多元组合、多重叠加、既相对分离又互相交融、同时其经济政治文化的影响力日益凸显的都市,对于正在走向东亚乃至世界舞台的近代日本而言,无疑是一个巨大的存在,因此,这一时期日本人对于上海的认识,首先是对于以上海为媒介的中国的认识,其次是对于与上海相关的世界的认识,同时也是对于通过上海所体现出来的中日关系的认识因此,近代上海对于这一时期的日本人,实际上具有三层意义：观察中国的现场;透视世界的窗口;反观日本本身的泰照系,     

PREHISTORIC CULTURE,CLIMATE AND AGRICULTURE AT YUCHISI,ANHUI PROVINCE,CHINA

A palaeoculture sediment profile from the Yuchisi site, Mengcheng County of Anhui Province, China, was sampled to study the concentrations of elements, total carbon content, grain size and pollen percentages, to reveal information on food supply based on statistical analysis of elements between 5050 cal. yr bp and 4000 cal. yr bp . The variations in the reconstructed food supply and pollen percentages are in good agreement with the results of other archaeological methods. The results from pollen and element analyses indicate that the Longshan Culture at the Yuchisi site was not developed from the local Dawenkou Culture, and the cultural transition corresponds with an extremely dry event, which may have caused the change.     

辛亥遗产与南洋华侨抗战之精神动力

1931-1945年日本侵华时期,南洋华侨精英以辛亥革命为资源、以双十国庆为契机,广泛开展救国宣传和社会动员,发表政见和救国主张,在激发侨胞爱国情怀、增强侨众凝聚力方面发挥了不可低估的作用。此过程既强化了辛亥记忆,传承了革命精神,也使辛亥遗产成为华侨参与抗战的重要精神动力。     

Stability of phytoliths in the archaeological record: a dissolution study of modern and fossil phytoliths

Opaline phytoliths are important microfossils used in archaeological and ecological research. Relatively little is known about the stability of phytoliths after burial. Under alkaline pH conditions they can dissolve, and mechanical disturbances can cause a loss of their more delicate appendages. Here we present an experimental study of phytolith stability (combination of solubility and abrasion). Modern and fossil phytoliths were extracted from wheat using new methods to minimize dissolution, and by burning in an oven. These assemblages were placed in a solution buffered to pH 10 and maintained under constant temperature and shaking conditions. The silicon concentrations in the solution were monitored once a week for 5 weeks. The phytolith morphologies in each assemblage were determined at the outset of the experiment and after 5 weeks. The results show that there are differences in stability between various assemblages. Modern inflorescence wheat phytolith assemblages are more unstable than those from leaves/stems. Burnt assemblages are less stable than unburnt assemblages, and a fossil phytolith assemblage about 3000 years old is more stable than the modern wheat assemblages. The results also show that individual phytolith morphotypes have different stabilities, and as a result of dissolution and abrasion, some morphotypes may resemble others. This study further shows that archaeological and/or paleo-environmental interpretation of phytolith assemblages may change with the assemblage’s state of preservation.     

Titus's Tinnitus

Historical approaches to tinnitus have depended highly on cultural factors. While ancient Oriental mysticism regarded it as sensitivity to the divine, Roman medicine associated it with depressive and seizure disorders on the basis of presumed common pathophysiology shared by the three conditions. In the Babylonian Talmud, tinnitus appears as Titus's curse: a gnat buzzing in the brain, responding to sound therapy, and then habituating. Various sources show varied emphases with common attention for contextual and emotional aspects that have become an important focus in modern management of tinnitus.