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Alemdar Bayraktar Emin Hökelekli Temel Türker İsmet Çalik Ashraf Ashour Ayman Mosallam 《International Journal of Architectural Heritage》2019,13(4):585-599
Structural walls of old historical structures are either blind or have openings for functional requirements. It is well known that in and out of plane responses of structural walls are affected by the size, locations, and arrangements of such openings. The purpose of this investigation is to study the window opening effects on static and seismic behaviors of historical masonry old mosques. Fatih Mosque, which was converted from a church, constructed in 914 in Trabzon, Turkey, is selected for this purpose. The mosque is being restored. Structural exterior walls of the mosque were made using stone and mortar materials. When the plaster on the walls was removed during the restoration, 12 window openings were found as blind on the exterior structural walls of the mosque. Within the scope of restoration works, it is aimed to open such blind windows. In order to investigate the effects of the window openings on the structural behavior of the mosque, 3D solid and finite elements models of the mosque with and without window openings are initially developed. The experimental dynamic characteristics such as frequency, damping ratio, and mode shapes of the current situation of the mosque, where some windows openings are blind, are determined using Ambient Vibration Testing. Then, the finite element model of the current situation of the mosque is updated using the experimental dynamic characteristics. The static and seismic time history analyses of the updated finite element model with and without window openings are carried out. Structural behaviors of the mosque with and without window openings are compared considering displacement and stress propagations. 相似文献
23.
Eva Coïsson Luca Collini Lia Ferrari Rinaldo Garziera Kseniia Riabova 《International Journal of Architectural Heritage》2019,13(3):358-370
Tie-rods are essential structural elements, which have been employed for centuries in masonry historical buildings, either during the construction or in successive strengthening interventions, with the aim of containing dangerous horizontal actions. The actual work conditions of these tie-rods, which are strongly influenced by their load history, are difficult to be quantified theoretically, and an effective method for their measure is of great importance in order to ensure the efficiency of these elements during the time and the stability of the entire building. Common measurements are often carried out adopting models based upon significant simplifications, like, for example, hinges at the extremities. These assumptions, rarely represent the real work conditions for anchorages. In this work, a non-destructive testing method is presented, based upon sophisticated dynamical models that can take into consideration many of the circumstances neglected by the simplified models. Four case studies are extensively described, trying to embrace the most common situations in term of peculiar features of the building, structural configuration, and load history. The discussion of the results yields the safety margin of the rod with respect to the material failure and provides important indications about the overall stability of the whole building. 相似文献
24.
Mary Jean Hande 《对极》2019,51(2):558-578
Drug wars, austerity and gentrification are interwoven social relations in many North American urban centres and are typically met with organising of varying degrees of militancy. Loïc Wacquant characterises many of these sites as highly stigmatised, associated with violence and pathology. In Toronto's downtown east end (DEE), one such stigmatised urban space, disabled activists are far from unfortunate casualties. They tend to refer to the DEE as an “urban battleground”, where disabled people politicise and challenge the DEE's pathology and stigma by linking into emerging radical disability politics across the global North and by developing localised revolutionary disability consciousness. Drawing on oral stories, zines and blogs of disabled activists and workers in Toronto's DEE, this article uses Rachel Gorman's dialectic of disability/disablement to analyse the emergence of revolutionary disability consciousness and the centrality of disabled people on the frontlines of anti‐gentrification and harm reduction organising in Toronto's DEE. 相似文献
25.
Initiated in 2004, the RICardo project focuses on bilateral trade data of all the world's countries from the early nineteenth century to the eve of the Second World War. The project includes the construction of a database and the creation of a website. It is a pioneering work in the field of historical trade statistics that aims at providing easy-to-access research material to the scientific community and at attracting a wider public to the history of trade relationships. The article emphasizes the originality of the project and sums up its various aspects by reviewing previous trade databases, clarifying the main features of historical trade statistics, and describing the construction and use of the RICardo website. 相似文献
26.
Kim Abildgren 《Historical methods》2017,50(2):67-78
This article constructs long-span time series indices on wages in Denmark and explores the growth in living standards in the pre-industrial era. There were several persistent upward and downward trends in real annual earnings from 1500 to 1820, but no clear upward long-term trend. This finding seems hard to reconcile with Maddison's figure for the average annual growth in real GDP per capita in Denmark (0.17%) over the same period. This is the case, even if the growth rate in pre-industrial annual earnings is underestimated by 0.05%–0.06% per annum due to an increased number of working days. 相似文献
27.
Catherine G. Massey 《Historical methods》2017,50(3):129-143
This article evaluates linkage quality achieved by various record linkage techniques used in historical demography. The author creates benchmark, or truth, data by linking the 2005 Current Population Survey Annual Social and Economic Supplement to the Social Security Administration's numeric identification system by social security number. By comparing simulated linkages to the benchmark data, she examines the value added (in terms of number and quality of links) from incorporating text-string comparators, adjusting age, and using a probabilistic matching algorithm. She finds that text-string comparators and probabilistic approaches are useful for increasing the linkage rate, but use of text-string comparators may decrease accuracy in some cases. Overall, probabilistic matching offers the best balance between linkage rates and accuracy. 相似文献
28.
Jonas M. Nordin 《Scandinavian journal of history》2017,42(1):1-27
In the late medieval period the religious guilds along with trade guilds grew in importance, as did the role of material culture related to the guilds. This history has seen little examination from a Fenno-Scandinavian and particularly a Swedish vantage point. In order to analyse the role of material culture in the formation of this way of organizing people, the article investigates the existence of late medieval guildhalls, especially rural ones, and discusses remains of other material culture that can be connected to the guilds. The halls, drinking vessels and other material things were activated in the growth of a new more substantial way of organizing society outside the boundaries of feudal society and family control. It is argued that material culture had a significant role in the recurrent activities of the guilds of the Middle Ages and in the shaping of new ways of organizing people. 相似文献
29.
Penelope B. Drooker 《Southeastern Archaeology》2017,36(1):75-84
European and indigenous artifacts from a grave near a mound on Pine Island in the Tennessee River near Guntersville, Alabama, donated to the Yale Peabody Museum of Natural History in 1915, included a group of fabric fragments. The fragments, which incorporate interlaced bison-hair yarns, most likely represent portions of a sash, an accessory with a long history in Mississippian iconography but with few extant archaeological examples. This paper addresses fabric attributes, comparable archaeological and historical fabrics, and the social significance of this costume item. 相似文献
30.
Anna McLauchlan 《Scottish Geographical Journal》2017,133(2):83-100
Swimming is a popular form of recreation and exercise in the UK and US. Swimming can take place outdoors but, particularly in the UK, largely takes place in designated indoor pools. Existing research tends to focus on ‘public’ or ‘municipal’ pools leaving broader spatial geographies of swimming pool provision under explored. In response to concern about swimming pool closures, this paper draws from extensive archival research into all swimming pools in the City of Glasgow, Scotland, since the first opened in 1804. Formal and informal programmes of pool building and closure were revealed. Rather than decreasing, public provision has remained constant for the last 100?years but become progressively more spread out in relation to the city’s changing size. Broadening exploration beyond the ‘public’ category exposed a vast drop in school pool numbers around the year 2000 due to a Private Finance Initiative project that consolidated the secondary school estate and outsourced school building management. The lessons: researching all types of swimming pool through time greatly enriches understandings of the changing meaning and extent of public service provision. 相似文献