Development of Trigger Levels to Assess Catchment Disturbance on Stream Suspended Sediment Loads in the Magela Creek Catchment,Northern Territory,Australia

Trigger levels for fine suspended sediment (FSS) load in streams are required to identify rainfall-runoff events that have significantly elevated FSS loads, compared with expected background loads, as a result of catchment disturbance. Stream FSS load data collected in the mine-impacted Magela Creek catchment in the wet-dry tropics were used to derive water quality management trigger levels for two approaches – a Before-After-Control-Impact Paired difference design (BACIP) and a regression relationship between observed FSS load and corresponding event discharge characteristics. The results indicate that both the BACIP and regression relationship approaches behave similarly, with similar FSS load events elevated above trigger levels. Notwithstanding this, it is recommended that in order to reliably assess the location and magnitude of a catchment disturbance on FSS load, a combination of BACIP and regression relationship approaches must be adopted. In this study, an event with a FSS load above trigger levels associated with both BACIP and the regression relationship fitted for the downstream site is considered to be significantly elevated as a result of a disturbance within the mine-impacted region. While this technique cannot conclusively determine whether the cause of the disturbance is mine-related or natural (such as fire or bank erosion), it is an efficient statistical method of identifying events that warrant further investigation and management action, if required.     

图们江“金三角”国际性城市体系发展构想

本文论述了图们江地区国际性城市体系建设的必要性,提出了城市体系等级结构、职能结构和空间结构的构建设想及管理原则,并初步估算了城市体系发展各项基础设施建设及投资规模。     

清代新疆冰岭道建置考

冰岭道作为乾隆平回之后为屯田伊犁而设的首条官方台路,其重要性自不待言。然而,长期以来,学界对这一问题的研究却较为缺乏。近年来,虽有学者对冰岭道做了专门探讨,但对于此路最为重要且变化最为剧烈的建置初期的情形,却由于汉文史料的匮乏而论述简略,考证失实。有鉴于此,本文在吸收前人经验的基础上,充分利用满汉文史料,对冰岭道的建置情形进行了考察。首先,证实了冰岭道建置初期并非仅有两阶段,而是有着层次分明的三个阶段。其次,对三阶段中所设台站的兴废增减进行了梳理,并阐明其调整过程不仅反映了台站职能的变化,更体现了清廷对新疆统治思想的变迁。最后,考证出伊犁驻防建设初期,伊犁地区与外界沟通的官方台路仅有冰岭道一条。     

“石匠村”的意义——窦村的石工传统与南京传统建筑地方性的关系

当前保护古都风貌成为南京城市发展的重要工作,这主要是指保护和利用各个历史时期遗留下来的建筑遗产。而我们在传统建筑遗产保护工作中往往只重视对建筑物本身的保护,采取的方法也只局限在测绘、图纸分析、按图纸施工等层面,却忽视了其最初建造过程中传统工艺的保护。针对传统建造工艺与建筑地方性的关系的问题,对南京郊区的被称为“石匠村”的窦村所特有的石工传统与南京传统建筑地方性的关系进行的讨论。     

关于西宁市社区建设的思考

加强和谐社区建设,对于促进地区经济和社会协调发展、提高人民群众的生活水平和生活质量、发展基层民主、维护社会稳定,意义重大。而从目前西宁市社区发展的现状来看社区建设仍任重道远。     

对社会主义意识形态建设相关问题的探讨

本文对我国意识形态建设创新的突破口、意识形态的研究方法、意识形态领域的斗争、社会思想的多样性与意识形态的包容性、核心价值体系的大众化以及凝聚改革发展共识等问题进行了分析,并对社会主义意识形态领域发生的新变化和新情况进行了探索研究。     

李四光与辛亥革命

在近代中国仁人志士探索国家出路的大背景下,李四光作为一位新式知识分子,在时代的号召下亦曾投入到革命洪流之中,参与辛亥革命。这充分体现了时代与个人的互动关系。在时代的号召下,他接触革命党人,接触革命思想,实现思想转变,走上革命救国道路,而革命党人的思想也对李四光的一生产生了深远影响：在辛亥革命后,面对辛亥革命的失败,他积极参与实业建设,力图实业救国,走上了科学救国之路。     

Topographical evolution and C age dating of the construction of the Eurimji reservoir (Jecheon,Korea)

The Eurimji site in Jecheon City, Chungcheong Province holds major importance for Korean cultural heritage because it is assumed to be the oldest man-made reservoir for rice field irrigation in Korea. A multiproxy study provides the first scientific dating of the levee construction. The authors retrieved two sediment cores from the levee (core ER-1, 18.00 m long) and the reservoir bottom (core ER-3-1, 6.98 m long). Several plant fragment layers were observed between layers of dark gray clay–silt sediment in unit 2 of both cores. The spacing and thickness of these plant layers was relatively uniform (from 50 to 90 cm, and 5 to 6 cm, respectively). These features are interpreted to represent part of a man-made sedimentary sequence created using the consolidation-settlement drain method (tamped-earth or rammed-earth method) commonly used for dam or fortress construction in ancient times, as the features are not characteristic of natural river sedimentary processes. In this alternating sequence, bulk carbon from the sediment yielded AMS ¹⁴C dates of 2000–1400 ¹⁴C yr BP, and the plant materials yielded dates of 1300–1200 ¹⁴C yr BP. If workers at that time used two different materials such as available plant materials and clays for levee construction, the plant material is preferred for ¹⁴C age dating. This is because the origin of the carbon in the sediments is ambiguous, but the source of the plant materials has been confidently determined to be equivalent to the time of the levee construction. Therefore, the levee was constructed between 1200 and 1100 ¹⁴C yr BP (AD 800–900), which is later than previously thought (i.e., AD 300 or AD 550). The results of our study also indicate that wetlands existed in the area before the construction of the Eurimji levee.     

Effect of Topology Irregularities and Construction Quality on Life-Cycle Cost of Reinforced Concrete Buildings

Life-cycle cost (LCC) analysis entails consideration of building performance throughout the structures’ life. The impact and interaction of topology irregularities and construction quality (CQ) on LCC, however, are often ignored and require a more detailed evaluation. In this article, different levels and interaction of soft story (SS) and CQ are analytically modeled to quantify corresponding fragility curves and LCC (by considering hazard level, limit state cost, and probability of being in different damage states). The proposed method is illustrated with a three-, six-, and nine-story reinforced concrete building located in Vancouver (located in west coast of Canada).     

White skin,black heart? 1 The politics of belonging and Native Title in Australia

This paper explores the ways in which local communities are articulating, negotiating and contesting relationships with place. It does this through a case study of place contestation in the Barmah-Millewa Forest, in south-eastern Australia. A Native Title Claim by the local indigenous community to land and inland waters was heard in the Australian Federal Court while this research was conducted. This has provided an avenue through which to explore the politics of place and identity in contemporary Australia. Recent theoretical discussions of place and identity and their manifestations in Australia are discussed in this paper. Through the case study, the paper demonstrates the complex and problematic ways in which place and identity can be constructed in Native Title Claims, and the intense and unsettling politics of claims to 'belonging' that result. It argues that whilst there is a need to recognize the desire for profound attachments to place of all Australians, we must be mindful of the political ramifications of the particular responses of local communities. The paper concludes that ongoing interdisciplinary and theoretically informed empirical research is necessary to understand the complex context of people-place relationships in settler societies.