走出传统模式--评王和著《从邦国到帝国的先秦政治》

王和先生的《从邦国到帝国的先秦政治》一书,不仅阐述了先秦政治发展的历史脉络,而且给学术界带来了一股清新的哲理思考之风。他超越了传统的“五种生产方式说”和“部落联盟说”两个理论模式,并对传统文化的核心“群体本位”论做了精到的解读。该书进行的以三代历史为背景的历史分析,相当辩证、冷静而深入,值得一读。     

邓小平与马克思主义理论学习

邓小平不仅自身在将马克思主义理论与中国具体实践成功结合方面树立起一座丰碑 ,成为全国人民科学地学习和运用马克思主义的光辉典范 ,而且高度重视、多次提出马克思主义理论学习问题 ,强调在新形势下马克思主义对党和国家的发展的重要指导作用 ,认为学习马克思主义理论要做到“精”与“通”的辩证统一、理论与实际的辩证统一、坚持与发展的辩证统一。     

邓小平"南方谈话"研究的回顾与思考

关于邓小平"南方谈话"的研究,从1992年至今取得了很多可喜的成果,并呈现出逐步深化的态势.研究之初的侧重点主要在于对其内容的梳理和分析,并联系现实问题与历史经验,着力澄清某些不清楚或不正确的观点,以推动思想解放之潮;研究中期的特点是联系实际来考察"南方谈话"的真理性,并上升到哲学高度阐释其内涵,进一步认识其在指导意义上的普遍性;2002年以来,研究的角度更加多样,研究的问题更加深入,既增加了"南方谈话"与"七一"讲话的比较研究,又对"南方谈话"历史地位及其重大意义的探讨有了理论上的新突破.今后的研究,应当在此基础上,进一步明确研究发展的基本动因,采取多种方法拓宽研究视角,并强化比较研究.     

Factors controlling free thermal convection in faults in sedimentary basins: implications for the formation of zinc–lead mineral deposits

Stratiform sediment‐hosted Zn–Pb–Ag mineral deposits constitute about 40% of the Earth's zinc resources ( Allen 2001 ), and in most cases their genesis involves the discharge of basinal brines near or on the seafloor through syndepositional faults ( Sangster 2002 ). From the point of view of base metal exploration, it is therefore essential to identify all possible faults that formerly carried the upwelling ore‐forming solutions during mineralising events. This paper presents a numerical investigation of the relative importance of various physical parameters in controlling fluid discharge, recharge and heat transport in faults. A two‐dimensional, free convection of pure water, hydrogeological model is developed for the McArthur basin in northern Australia based on the surface geology, known stratigraphic and structural relationships and regional geophysical interpretations. Numerical experiments and sensitivity analyses reveal that faults with strong initial heat input, due to depth of penetration or magmatic activity, are the most likely candidates to carry discharge fluids to the sites of metal precipitation. Deeper, wider and more permeable faults are more likely to behave as the fluid discharge pathways, whereas shallow, narrow or less permeable faults act as marine water recharge pathways. Compared with these fault‐related factors, aquifer physical properties are less important in determining fluid flow patterns and the geothermal regime. These results are an important step in understanding hydrothermal fluid flow in sedimentary basins in order to develop effective exploration criteria for the location of stratiform Zn–Pb–Ag deposits.     

Mathematical modeling of phase separation of seawater near an igneous dike

We provide a simplified treatment of phase separation of seawater near an igneous dike to obtain rough estimates of the thickness and duration of the two‐phase zone, the volume fractions of vapor and brine formed, and their distribution in the subsurface. Under the assumption that heat transfer occurs mainly by thermal conduction we show that, for a 2‐m wide dike, the maximum width of the two phase zone is approximately 20 cm and that a zone of halite is initially deposited near the dike wall. The two‐phase zone is mainly filled with vapor. For a value of thermal diffusivity of a = 10^?6 m² sec^?1, the two‐phase zone begins to disappear at the base of the system after 13 days, and disappears completely by 16 days. For a lower value of thermal diffusivity, the width of the two‐phase region does not change appreciably but its duration increases as a^?1. The width of the two‐phase zone determined by this simplified model agrees reasonably well with transient numerical solutions for the analogous two‐phase flow in a pure water system; however the duration of two‐phase flow is matched better using a smaller value of a. We compare the seafloor values of vapor salinity and temperature given by the model with vapor salinity data from the ‘A’ vent at 9–10°N on the East Pacific Rise (EPR) and argue that either non‐equilibrium thermodynamic behavior or near‐surface mixing of brine with vapor in the two‐phase region may explain the discrepancies between model predictions and data.     

Timescales for reaching steady-state fluid flow in systems perturbed by formation of highly permeable faults

We consider the case of an isothermal, fluid‐saturated, homogeneous rock layer with transverse fluid flow driven by an imposed constant fluid pressure gradient. A rupture in the centre of the rock layer generates a highly permeable fault and results in a change of the initially homogeneous permeability distribution. This leads to a perturbation of the fluid flow field and its gradual transition to a new steady‐state corresponding to the new permeability distribution. An examination of this transitional process permits us to obtain an analytical estimation of the transition stage duration. The application of the results obtained to km‐scale faults in crystalline rock bodies leads to the conclusion that the evolution of the fluid velocity field is rather rapid compared with geological timescales.     

中共临时中央对抗日同盟军工作的指导思想

20世纪30年代初,中共临时中央为了实现创造北方新苏区的革命目标,指示张家口前委在同盟军中开展工作,意图铲除冯玉祥,把同盟军改编为红军,建立苏维埃根据地。这是临时中央在指导地方党的工作中盲目执行“左”倾冒险主义进攻路线的一个具体计划,结果给党的事业造成极大危害。今天总结这一历史教训,有助于深化我们对中国革命史中“左”的认识和反思。     

借鉴，还是抄袭——评《对列宁一国建成社会主义思想及其意义的探讨》

陈立旭的《对列宁一国建成社会主义思想及其意义的探讨》一,主要内容抄自李心华的《列宁“一国建成”思想新论》稿。陈立旭认为自己的行为是借鉴。到底是借鉴,还是抄袭?经过详细比较证明,陈立旭的《探讨》是一篇道地的抄袭之作。抄袭就是抄袭,抄袭和借鉴是有区别的。     

The calm before the storm: A punctuated equilibrium theory of international politics

Research has shown that policymaking in numerous domestic policies, across a multitude of polities, systematically produces a pattern of change that matches Punctuated Equilibrium Theory (PET), characterized by many incremental and occasional dramatic changes. The field of International Relations (IR), however, has paid surprisingly little attention to PET, even though the same pattern of change is also found in international politics. This study attempts to fill this gap and explains stability and change in international politics based on PET. Specifically, we detail the dynamics behind this pattern of behavior, both at the domestic and the international level, as well as their interplay. The empirical section shows that different indicators of international politics, including troop deployments, foreign aid and international trade, follow a leptokurtic pattern of change, which characterizes Punctuated Equilibrium, and whereby changes in countries' behavior are generally incremental, representing periods of relative stability, and punctuated by large changes that dramatically overthrow existing policies. Moreover, our results indicate that policy outputs where greater friction is at play are more punctuated than those policies that cannot as easily or directly be managed. This study urges future research to further explore the dynamics of stability and change at the aggregate, international level.