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Kuwait–Georgian archaeological work at Failaka Island showed the need for geological study. Analysis of sediments related to drinking water-collecting cisterns was performed on a Late Islamic settlement (NE part of the island) in 2018. Field sedimentological, grain size and XRD analysis of the sediment profiles showed that the shallow (about 1 m deep) cone-shaped wells are dug in the loose, porous, cross-stratified calcareous coarse-grained quartz sandstones. Three upper layers of quartz sandstones in the profile have high infiltration rate and provide a rare yet ideal material for water retention. The fourth dense layer below, composed of very fine sand and silt fraction, tends to hinder water movement and forms a relatively impermeable water-resistant surface. Thus, the distribution patterns of clay content, grain sizes and porosity of the well-hosting sediments are favourable for freshwater infiltration and harvesting. An additional petrographic analysis was conducted on different types of rocks discovered on the archaeological site, used as building material and fragments of stone artifacts to identify their origin. It was established that archaeological building material is of local origin, whereas the source rocks for stone artifacts were imported.  相似文献   
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ABSTRACT. The problem of locating a point that is as far as possible from arcs and nodes of a network is investigated. Each arc or node may have a different multiplicative factor (weight) for its distance. A graphical solution approach, as well as a computational algorithm, is presented.  相似文献   
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Abstract. Four states have disappeared as a result of the collapse of communism and many others have come into being. I want to look at the reason why these states have disappeared, what this says about the nature of state-sustaining ideologies and what the disappearance tells us about the relationship between statehood and nationhood. I will also look at the effectiveness of communism as a state-sustaining ideology. The four are, obviously, the Soviet Union, Yugoslavia, Czechoslovakia and East Germany. In each case, the survival of the state was linked to communism and the end of communism brought their continued existence into jeopardy. I shall not be looking at the Soviet Union in detail. Broadly, the construction of political identities can come about in two ways – by ethnicity or by the state. Each gives rise to a different set of loyalties, creates its own panoply of rituals etc. When the two coincide, the mythical nation-state can be said to be in being, but this hardly exists in reality (Iceland may be the sole exception in Europe).  相似文献   
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Book reviews     
THE MIND OF EAST ASIA, Lily Abegg. (338 pp. with Index). Translated from the German. Thames and Hudson; London, New York.

BRITAIN AND THE UNITED STATES: Problems in Co‐operation. A joint report prepared by Henry L. Roberts and Paul A. Wilson. London. Royal Institute of International Affairs. Pp. 224. Price 8/6 sterling. 1953.

D?R LAUTLOSE AUFSTAND. BERICHT VEBER DIE WIDER‐STANDSBEWEGUNG DES DEUTSCHEN VOLKES 1933–1945. Herausgegeben von Guenther Weissenborn. Rowohlt Verlag Hamburg. Pp. 348.

“EASTERN AND WESTERN WORLD”: Selected Readings with a foreword by S. Hofstra. Issued under the auspices of the Netherlands Foundation for International Co‐operation and published by W. Van Hoeve Ltd., The Hague, Bandung. 1953. Pp. 181.

NATIONALISM AND SOCIAL COMMUNICATION. By Karl W. Deutsch. John Wiley & Sons, N. Y. viii and 292.

BURMA UNDER THE JAPANESE: By Thakin Nu. Pictures and Portraits, Edited and translated with Introduction by J. S. Furnivall. Macmillan, London. 1954. Pp. xxviii and 132. Price 12s 6d.

COMMODITY TRADE AND ECONOMIC DEVELOPMENT—Report of a Committee appointed by the Secretary‐General, United Nations, Published by the United Nations, 1953.  相似文献   

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