顾维钧与美台关于沿海岛屿的交涉 (1954.12～1955.2)

《共同防御条约》签署后,台湾当局与美国围绕如何处置大陈及金门、马祖等岛屿展开了新一轮交涉,由于立场不同双方出现了分歧和矛盾。顾维钧在这一交涉中扮演了重要角色,他与蒋介石等对沿海岛屿可能导致“两个中国”问题的警觉,为台美之间最后达成关于沿海岛屿的协议设定了一个底线。     

克林顿总统时期美国对华政策形成的特点--以总统、国会在对华贸易最惠国待遇问题上的争论为例

通过对克林顿时期总统与国会围绕是否给予中国贸易最惠国待遇问题的争论的历史考察,可以发现在这一时期美国对华政策形成具有如下特点第一,从行政与立法机构之间关系的角度来看,关键时刻总统和国会两院在事关国家利益的重大问题上最终总能达成共识;第二,从行政和国会与两党之间及两党相互之间关系的角度来看,对经济问题的考虑是它们的共同点,也是美国对华政策的重点,美国对华政策中的政治利益往往通过经济手段来实现;第三,从政策实现的途径来分析,总统靠游说国会和呼吁公众支持来实现自己的政策,国会则靠立法来体现其主张,而且国会在大多时候采取主动出击的方式,而总统则在多数时候保持反应式的决策模式。     

论良渚文化中心聚落的特殊性

良渚化的中心聚落一直没有发展成带有城垣建筑的城址。表现出了自身的特殊性。由于宗教巫术的盛行以及宗教权力与世俗权力的紧密结合,使良渚化大量的人力、物力都消耗到与宗教有关的大型建筑工程之中。另外龙山对代长江下游地区比较安宁,没有大规模战争的威胁也是造成这一特殊性的重要原因。     

扼制还是纵容？——浅析美国移民制度对中国非法移民的影响

在过去的二三十年间,中国非法移民已成为美国华人社会一个日益严重的社会问题,它同时也引起美国政客和社会学家的关注.为什么在美国政府制定了一系列移民政策以阻止非法移民进入美国的同时,非法移民潮却始终禁而不绝?本文选取美国移民政策中的两大法令--政治庇护制度和雇主制裁条例,以说明美国移民制度中存在的一些漏洞及自相矛盾之处,这些对非法移民特别是中国非法移民的形成与发展产生了重要影响.     

“80／20促进会”与美国华人参政新策略

“8 0/2 0促进会”是以华人为主导的一个美国亚裔参政组织 ,它是针对 2 0 0 0年美国总统大选而成立的。本文拟就该组织成立的原因、目的和宗旨 ,总统候选人的确定、行动与争议 ,在大选中的影响力及其发展前景作一简单介绍 ,并对当代美国华人及亚裔参政这一新策略作一评价和深入思考。     

美苏冷战与中国内战的起因和结局——以东北为中心的考察

二战结束后,中国东北成为美苏两国与中国国共双方关注和争夺的焦点地区,并最终形成了以美国和国民党为一方,以共产党和苏联为另一方的对峙格局,导致了中国内战在东北的爆发,东北也成为美苏关系在东亚转冷的起点。在苏联的支持下,中国共产党取得了辽沈战役的胜利,奠定了中国革命胜利的基础,而国民党则逐渐丧失了美国的支持,这在外因上决定了中国内战的结局。     

C.S. Lewis: an Irish writer

This article examines the effect of C.S. Lewis's Irish background on his work. It attempts to contradict the assumption that this Belfast-born writer should be included in the English and not the Irish canon. It emphasises that Lewis saw himself as Irish, was seen by others as Irish, and that his Irish background, contrary to what some have written, was important to him throughout his lifetime. It goes on to demonstrate the ways in which his work was influenced by his youth in Ireland and by the Irish mythology that he loved. Furthermore, this article maintains that, as a child of pre-partition Ireland with roots throughout the island, Lewis was influenced by the country as a whole, not just his native Ulster. Finally, it attempts to understand why Lewis, a proud Irishman, did not do more to promote himself as an Irish writer.     

2007年以来抗美援朝研究述评

<正>2007年以前关于抗美援朝战争史(或朝鲜战争史)以及抗美援朝运动研究情况的综述已有几篇①。本文仅对2007年至2010年6月有关抗美援朝的研究成果简略综述。一、研究概况2007年以来出版的有关抗美援朝战争研究的专著约有三十多部,再版书十余部,发表的相关论文上     

Geomorphological setting and Native American acquisition of buff-firing ceramic clays in the Lower and Middle Gila River Valley, Arizona

This study addresses buff-firing clay sources in dynamic alluvial settings along Arizona’s Gila River in the U.S. Southwest. We establish clay resource distribution relative to the geomorphic histories of the Lower and Middle Gila River based on 38 clay samples and ethnographic data from two US Bureau of Reclamation (BOR) projects. Buff-firing clayey alluvium, deposited in the Gila River floodplain 800 to 1,500 or more years ago, was a surficial ceramic raw material source for prehistoric Hohokam and lowland Patayan potters. This geomorphic unit was later removed in some places and buried by up to 3-4 m of sediment in others, reducing the availability of buff-firing clays in the Hohokam Classic period and requiring historic Pee Posh and Akimel O’odham potters to dig pits to access it. Sources were further destroyed in catastrophic floods in the late 19th and early 20th century, affecting ceramic manufacture patterns and ultimately contributing to the decline of pottery production by the O’odham living in the Gila River Valley. Our results contribute to regional ceramic ecology and should also be of interest to others investigating alluvial clay use in general or buff-firing alluvial clays in particular. The study also illustrates the value of combining geomorphic and ethnographic data to examine major changes in resource distribution and use.     

Are rocks still water‐wet in the presence of dense CO2 or H2S?

The various modes of acid gas storage in aquifers, namely structural, residual, and local capillary trapping, are effective only if the rock remains water‐wet. This paper reports an evaluation, by means of the captive‐bubble method, of the water‐wet character in presence of dense acid gases (CO₂, H₂S) of typical rock‐forming minerals such as mica, quartz, calcite, and of a carbonate‐rich rock sampled from the caprock of a CO₂ storage reservoir in the South‐West of France. The method, which is improved from that previously implemented with similar systems by Chiquet et al. (Geofluids 2007; 7 : 112), allows the advancing and receding contact angles, as well as the adhesion behavior of the acid gas on the mineral substrate, to be evaluated over a large range of temperatures (up to 140°C), pressures (up to 150 bar), and brine salinities (up to NaCl saturation) representative of various geological storage conditions. The water‐receding (or gas‐advancing) angle that controls structural and local capillary trapping is observed to be not significantly altered in the presence of dense CO₂ or H₂S. In contrast, some alteration of the water‐advancing (or gas‐receding) angle involved in residual trapping is observed, along with acid gas adhesion, particularly on mica. A spectacular wettability reversal is even observed with mica and liquid H₂S. These results complement other recent observations on similar systems and present analogies with the wetting behavior of crude oil/brine/mineral systems, which has been thoroughly studied over the past decades. An insight is given into the interfacial forces that govern wettability in acid gas‐bearing aquifers, and the consequences for acid gas geological storage are discussed along with open questions for future work.