商末黄河中游气候环境的变化与社会变迁

新石器时代到商代黄河流域的气候属于温暖湿润期;商代后期气候出现厂干旱化,导致了古公亶父迁岐,文王迁程迁丰,帝乙帝辛时不断向南方发展;而商末的旱灾和饥荒是周武王克商的直接导火索,导致商周之际的改朝换代。商末气候环境的变迁对其时社会政治的影响极大。     

Identifying of buried archaeological remains with ground penetrating radar,polarized microscope and confocal Raman spectroscopy methods in ancient city of Nysa,Aydin – Turkey

The aim of this study was to image buried remains and appoint buried Hellenistic street system, and identify minerals and rock types of the ancient city of Nysa, one of the most important historical sites of Turkey. This study used polarized microscope and confocal Raman spectroscopy (CRS) ground penetrating radar (GPR) method, to identify the buried remains, rock types and minerals.     

一个展览和一个时代——“明永乐宣德文物特展”设计综述

"明永乐宣德文物特展"是一个全面展现明早期艺术的综合性文物大展。展览的最终目的是要激发大众对传统艺术的兴趣,令其得到文化的熏陶与艺术的启迪,因此,展览陈列设计所要考虑的是一个多层次的体系。首先提炼装饰元素作为视觉主题,将艺术品的美感尽可能展现给观众,同时还要向观者传递时代背景、皇帝的思想境界等信息。此外,设计者还精心挑选不同的装饰材料以营造新颖的展示环境,达到衬托文物高超工艺水平的目的。     

Technology and ocean‐scape: Defining the deep sea in mid‐nineteenth century

The ocean's profound inaccessibility makes it impossible to comprehend except through the mediation of technology. The first investigators to explore the great depths were hydrographers whose work was animated by mid‐nineteenth century growth of political, economic, and cultural interest in the oceans. While submarine telegraphy certainly boosted ocean science, interest in this field derived first from commercial concerns related to whaling and shipping as well as the intellectual pursuits of physical geography and questions about the existence of life at great depths. Hydrographers’ developing conception of the oceanic environment never represented a clear translation from technology. Dramatic changes in the understanding of the shape of the deep‐sea floor testified to the complexity of interaction between sounding machines, methods, and interpretations of depth. The shifting image of the sea floor not only reflected increasingly accurate measurements, but also mirrored shifting human motivations for studying this unexplored territory.     

再谈三线建设的评价问题

20世纪六七十年代进行的三线建设,虽已过去几十年了,但对它的评价依然存在颇多争议。对三线建设作出分析评价,确非易事,很大程度上归因于其特殊性。有鉴于此,有必要提出三线建设二重性这一命题,即它既是旨在应对战争危险的特殊政治行为,又是谋求改善生产力布局的一般经济行为。由于战争没有绝对确实性,只有相对确实性,因此政府的经济行为并不总是取决于经济学原则,还要考虑社会政治的要求。与此同时,评价三线建设得失时,还要面对其经济分析的特殊因素和难以避免的模糊性。总之,三线建设得失相比,得是长期起作用的因素,是国家战略利益所系;失是得的必要代价,从根本上说是外部敌对势力强加给中国人的,也是暂时的,终归会得到补偿。     

Empirical Green's Functions Modified by Attenuation for Sources Located at Intermediate and Far Distances from the Original Source

We present a scheme to modify empirical Green's functions by attenuation considering: (1) geometrical spreading; (2) decay in high frequency; (3) regional attenuation; and (4) phase of the signal. The accelerograms computed with the proposed simulation method are compared, in time and frequency domains, with strong ground motions from subduction and intermediate-depth earthquakes recorded in Mexico. It is shown that this simple empirical Green's functions technique can synthesize both the shape and amplitude of the response spectra in the site, considering a postulated seismic source located at different distances from the original one.     

洪保生平事迹及坟寺初考

洪保墓出土的寿藏铭是对其生平事迹及郑和下西洋史料的重要补充。据寿藏铭及相关文献记载,从永乐元年到宣德八年的30年内,洪保曾经一次奉使西域、七次奉使西洋,与郑和、王景弘同列为宣德六年下西洋之正使太监。此外,据记载下西洋船队中确有五千料宝船,至正统六年洪保依然活跃在政坛。洪保墓地所在坟寺即宁海寺。     

《中国共产党历史》第二卷对中华人民共和国史研究的意义

2011年出版的《中国共产党历史》第二卷记载了中国共产党自1949年10月中华人民共和国成立至1978年12月中共十一届三中全会召开这段历史,该书不仅是党史研究的一项重大成果,而且对国史研究也具有重要意义:为正确把握新中国前29年历史的重大问题提供了基本参照;披露了140多件文献档案,整理了一系列统计数据,为深入研究新中国前29年的历史提供了有价值的新史料;其编写方法为研究编纂新中国前29年的历史提供了有益的借鉴和启示。