Erosion and Nutrient Loss on Sloping Land under Intense Cultivation in Southern Vietnam

To help improve the well‐being of the local people, a joint Vietnamese‐UK team set out to establish a way of estimating soil and nutrient losses under different land management scenarios, using field data extrapolated through remote sensing and GIS, to obtain catchment‐wide estimates of the impact of land cover change. Immigration from remote provinces to the Dong Phu District of Binh Phuóc Province, about 120 km north of Ho Chi Minh City, has led to disruption of soil surface stability on easily eroded clayey sandstones, creating rapid nutrient depletion that affects crop yields and siltation in the channel of the Rach Rat river downstream. The poor farmers of the areas see crop yields drop dramatically after two or three years of cultivation due to the fertility decline. Soil loss varies dramatically between wet season and dry season and with ground cover. Erosion bridge measurements showed a mean loss of 85.2 t ha^?1 y^?1 under cassava saplings with cashew nuts, 43.3 t ha^?1 y^?1 on uncultivated land and 41.7 t ha^?1 y^?1 under mature cassava. The rates of erosion were higher than those reported in many other parts of Vietnam, reflecting the high erodibility of the friable sandy soils on the steep side‐slopes of the Rach Rat catchment. However, although the actual measurements provide better soil loss data than estimates based on the parameters of soil loss equations, a large number of measurement sites is needed to provide adequate coverage of the crop and slope combinations in this dissected terrain for good prediction using GIS and remote sensing.     

Principles in the pipeline: managing transatlantic values and interests in Central Asia

After a decade of relative neglect post‐Soviet Central Asia has become a foreign policy priority for the transatlantic community. Both the United States and Europe have engaged with the region in recent years in pursuit of new strategic interests, including maintaining military basing access in support of coalition operations in Afghanistan and securing the export of Central Asian oil and gas to the West. Despite this period of renewed engagement, however, the quality of democratic governance within the region remains poor, especially in comparison with other post‐communist regions that successfully completed their political transitions. In fact, the United States and the European Union have often tempered promoting their Central Asian democratization agendas in order to maintain access to these strategically important fixed assets. The transatlantic struggle to balance the pursuit of strategic interests and democratic values has been rendered more difficult by Russia's recent resurgence as a regional power. Backed by the Central Asian governments, Moscow has challenged the purpose and influence of western‐based international and non‐governmental organizations in the region, thereby further diminishing the transatlantic community's capacity to promote sustained democratic reforms.     

韩国神杆的起源和特征——与中国大汶口文化和良渚文化中的神杆纹样的比较研究

本文通过在东夷文化圈中发现的神杆纹样,对韩国神杆的起源和功能展开讨论。我们可以发现,神杆起源于东夷文化圈,与稻作技术一道影响了韩国的南部地区。形态上的相似性,及功能上相似性,充分说明了韩国神杆与东夷文化圈的神杆有着紧密的联系。希望能够通过这样的研究,解决一部分关于神杆的起源和功能的问题。     

PETROGRAPHY AND PROVENANCE INTERPRETATION OF THE STONE MOULDS FOR BRONZE DAGGERS FROM THE GALDONG PREHISTORIC SITE, REPUBLIC OF KOREA*

This paper presents material characteristics and raw material provenance of the stone moulds for bronze slender daggers from Galdong. This type of bronze dagger is uniquely distributed in the Korean Peninsula and these stone moulds were the first to be found by excavation. The stone moulds were made of igneous hornblendite with course-grained holocrystalline textures. Based on petrological, mineralogical and geochemical characteristics, the original rock materials of the moulds were inferred to be derived from the Jangsu or Namwon areas which are about 50 km away from the excavation site. It is a notable achievement that this provenance study confirmed the domestic production of Korean-styled daggers.     

A PRACTICAL MODEL FOR SEISMIC ANALYSIS OF REINFORCED CONCRETE SHEAR WALL BUILDINGS

A simple macro-model for reinforced concrete shear walls is proposed, which consists of spring elements representing flexure and shear behaviour. The model for flexural behaviour is based on section analysis, while the model for shear behaviour is based on key parameters of the flexural behaviour. Four wall test specimens are selected to evaluate the reliability of the model. Modelling parameters for the backbone curves and the hysteretic rules are examined by conducting static and time history analyses, with the hysteretic response of a test specimen compared to that calculated using the proposed model. Results show some differences between measured and calculated shear force versus shear distortion relationships, but the model is acceptable because the differences do not significantly affect calculated global response. Parametric studies are also conducted to examine the influence of modelling parameters on seismic demand and capacity, which are the major design parameters for structural performance evaluation. Differences due to variation in modelling parameters are not significant, further indicating that the proposed model is reasonable.     

Sport,Localism and Social Capital in Rural Western Australia

Whilst there has been some research conducted on the role of sport in Australian rural communities, to date there has been little detailed discussion by social scientists and geographers on the association between sport and social capital. This paper identifies elements of social capital, at a community and regional social scale, which have been expressed through the activities and adaptive strategies of twenty‐five sporting clubs from the wheatbelt region of Western Australia. Most of the adaptive strategies are a direct result of the clubs being exposed to the processes of rural restructuring and include amalgamation and the spatial reorganisation of sporting competition locations. The importance of localism in rural communities is also examined through the issues of trust and distrust within a regional hierarchy context. The paper illustrates how sport is not only an important part of rural life but also an activity which plays an integral role in the formation of bonding and bridging social capital.