The deposit of KHB-1, Ra’s al Khabbah (Ja’lān region,Sultanate of Oman): Stratigraphy,features and structures

The excavation of KHB-1 archaeological site was part of the Joint Hadd Project [Joint Hadd Project is a project operating in the Ja’lān region since 1985, born under the collaboration between ISIAO (Istituto Italiano per l’Africa e l’Oriente, Rome), CNRS (Centre National de la Recherche Scientifique, Paris) and the University of Bologna] carried out in the Ja’lān region, along the coast of the Sultanate of Oman. Different phases of occupation with significant structural evidences were identified within the deposit: an early short-term occupation in the 7th millennium, followed by a longer, extended period of occupation during the 4th millennium by a community of hunter-gatherers, with some evidence of animal husbandry. The material culture recovered from KHB-1, which includes architectural remains, provides new insights on the cultures of this region, highlighting a need for further excavations and analysis. This paper will illustrate the stratigraphic sequence and the main features recovered at KHB-1, followed by a discussion on the two main periods of occupation which will help shed a light on the site function and more broadly provide key insights on mobility, economy, and material culture of Ja’lān in the beginning of 7th and along the 4th millennium B.C.     

吉林省循环农业发展评价及优化调控研究

在分析循环农业内涵、原则和技术目标的基础上,结合吉林省农业发展现状,建立循环农业发展评价指标体系,运用熵权系数法对1990-2008年吉林省循环农业发展水平进行综合评价。研究结果表明:1990-2008年,吉林省循环农业发展水平不断增强,循环农业演化过程经历了停滞、缓慢提升、快速发展3个阶段,对1990和2008年循环农业发展制约因素和障碍度进行了对比分析。研究发现:2008年吉林省循环农业发展障碍因素依次为资源减量投入、资源循环利用、经济社会发展和资源环境安全。最后,根据评价结果提出了吉林省循环农业发展优化调控对策。     

大都市双核廊道结构空间增长过程研究——以美国华盛顿-巴尔的摩地区为例

本文以华盛顿-巴尔的摩地区200年都市化发展史为例,通过Mapinfo7.0得到两城市内、外接圆半径值①,以Logistic模型为基础计算出其半径增长速率并进行对比分析。研究表明,巴尔的摩和华盛顿城市化区的扩展表现为核心与廊道的共同增长,但二者的增长速率不具有同步增长过程;1962年前华盛顿城市化区的空间形态要优于巴尔的摩,随后则相反。传统的双核廊道结构空间增长研究多以整体为对象研究其增长过程,本文的创新特色在于通过对比分析两个城市内、外接圆半径的变化,来揭示双核廊道结构空间增长的特殊规律。     

论藏品信息

藏品信息是博物馆藏品工作的新课题。本文从宏观的角度,分析了藏品信息的意义、要素、结构、分类、著录规则和标准化等一系列问题。     

Preparing an archaeological field survey: Remote sensing interpretation for herding structures in the Southern Levant

Development of archaeological “virtual surveys” using online satellite imagery allows the identification of an increasing number and diversity of data. Coherent procedures are now essential in the preparation of any field study: estimating archaeological potential, gathering and mapping environmental features, and building hypotheses about settlement location and settlement patterns. In this article, we propose methods aimed at developing tools to describe and measure the different elements of pastoral archaeological structures in southern Syria, and quantifying the importance of these structures in the landscape and natural environment. Our thematic case study is the pastoral settlement pattern in the Leja, a basaltic region in southern Syria.     

Material Characterization and Micro-Modeling of a Historic Brick Masonry Pillar

A masonry pillar composed of solid clay bricks, cement mortar and infill is extracted from a historical structure and tested in concentric compression. It is subjected to cyclic and monotonic loads up to compressive failure.

In parallel, samples are extracted from the pillar and are subjected to destructive tests. Non-destructive tests are performed on the pillar, as well. The properties of the constituent materials are critically examined and their role in the maximum load reached and the failure mode obtained are discussed.

Finally, a finite element micro-model of the pillar is used for the simulation of the pillar test. The influence of the existing damage on the pillar is investigated using the model, resulting in a fair approximation of the global Young’s modulus, maximum load and the failure mode.

Highlights

●?A brick masonry pillar extracted from a historical building is tested in compression.

●?Material samples extracted from the pillar are characterized by mechanical tests.

●?A finite element micro-model of the pillar is used for the simulation of the compressive test.

●?The effect of damage on the compressive strength of the pillar is numerically investigated.     

Regional embeddedness,relatedness and inter-regional linkages among less developed regions in Central Europe

This paper aims at a comprehension of existing intra-/inter-regional production flows in a dynamically transforming, export-oriented economy in Central Europe. Drawing on evolutionary economic geography combined with input–output approaches, we have assessed the sectoral compositions and relationships between regions from a buyer-supplier interactions perspective. Inspired by contemporary literature we applied concepts of regional embeddedness, relatedness and vertically related variety. Conceptually we argue that the degree of embeddedness of regions is differentiated and spatially non-random. The differences will depend to a large extent on the economic characteristics and on the ability of key actors and institutions in these regions to respond actively to changing opportunities and threats. Empirically we have found: that economically more developed regions are relatively more embedded in terms of production flows and have greater sectoral variety, whereas regions with high export-dependence are economically backward, and have higher concentration of industry and negative associations with innovation activity and overall innovation potential. The intensity of interregional production flows increases as the regional economies vary more from each other, but beyond a certain level of structural difference the rate of mutual flows decreases; and that the intensity of interregional relations depends on the relatedness of the economic bases.     

SEISMIC DESIGN AND ANALYSIS OF A KNEE BRACED FRAME BUILDING

A five-storey steel frame incorporating dissipative knee elements is designed using the Eurocode 8 pushover analysis method. The non-linear analysis makes use of a novel knee element model capable of accurately simulating the bending and shear behaviour observed in full-scale tests. The performance of the structure is assessed using non-linear time-history analysis. This shows that the knee elements can be designed to yield under small earthquakes or early in a strong one (maximising their energy dissipation) while still being able to withstand a large event without collapse. Knee elements thus have the potential to give excellent seismic performance in steel framed structures. The time history analysis results are compared to those obtained with the three different pushover analysis methods (Eurocode 8, FEMA 356 and ATC 40). The FEMA 356 method, which includes a more accurate representation of the structure's significant post-yield stiffness, gave the closest agreement with the time history analyses, while the Eurocode 8 method gave rather conservative results and the ATC 40 method appears non-conservative for this type of structure.     

Storage Structures of the Late Early Bronze I in the Southern Levant and the Urbanisation Process

Nearing the end of the Early Bronze (EB) I period (3350–2950 bce) the southern Levant underwent a transition from a village-oriented to an urban-centred society. An outstanding phenomenon of this period throughout the region is the proliferation of rounded circular structures, usually interpreted as storage facilities, often found in proximity to domestic buildings. These imply increased food production of individual households and a greater need for storage of food surpluses. The agricultural prosperity and resulting surpluses suggested by these storage structures reflect the changes affecting local society and may have been one of the catalysts for urbanisation and the formation of ruling elites during this period.     

南宋绘画风格探析——从团扇面与花鸟画谈起

在中国绘画史上,团扇扇面形制和花鸟绘画题材同时在宋代兴盛开来,两者之间具有相互促进发展的作用,又共同促进了南宋“边角之景”绘画图式的形成。而且北宋画家便具备了“以小观大”艺术思想和表现能力,”边角之景”的出现可谓水到渠成。“边角之景”又带来了“大斧劈皴”,形成完整的南宋山水画风貌。这种绘画风格并不是特殊的时代产物,更不是“残山剩水”的政治写照。