Window opening effects on structural behavior of historical masonry Fatih Mosque

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.     

旅游目的地依恋维度的建构与解构

针对旅游目的地依恋维度要素缺乏挖掘、维度互动机理尚未厘清等不足，本研究创新地将社会网络分析和扎根理论结合使用，基于旅游者生成内容挖掘旅游目的地依恋概念、维度及其维度互动模式。主要研究结论如下：①旅游目的地依恋是旅游者为寻求自我一致性或差异性，通过对目的地的认知情感性构建而产生的“炙热”情感，可拓展为由地方依赖、地方认同、地方情感、地方好奇、地方印刻、地方象征的六维结构，遵循“动机性卷入→认知性投入→情感性忠守”的逻辑进路；②地方依赖维度与其他维度的直接交互影响作用明显并具有较强的中介桥梁作用。最后，探讨了研究的理论和实践意义。     

The Panstereorama: City Models in the Balloon Era

The nineteenth-century ‘panstereorama’ was an urban relief model placed on display as a public spectacle. In this article, I consider first two affiliated forms that help to explain the genre, namely panorama paintings and plans-reliefs. I then go on to consider urban regional practices of city modelling in London and Paris before examining in detail panstereoramas representing Paris and New York. It is argued that this form of model urban cartography served as proxy for the view obtained from the increasingly popular balloon trip and that it accordingly provided virtual travel to, and a map of, the cities depicted.     

The contribution of Sir Alan Wilson to spatial interaction and transport modelling

ABSTRACT

In a series of papers in the mid-1960s and early 70s, building on his key 1967 paper, Alan Wilson made a series of fundamental contributions to the specification and application of land-use transport models. In this paper the basis of his entropy-maximizing approach to spatial distribution models is outlined with a demonstration that the methods have applications very much beyond its transport roots. The entropy maximization method laid the foundations for the development of a range of multinomial logit share models. He expanded the core transport ideas to the whole range of comprehensive models, initially building on, and extending, Lowry's iconic Pittsburgh model. The factors that have sustained the longevity of Wilson's models are explored and articulated.     

Alan Wilson – contributions to research on population and migration

ABSTRACT

This article reviews Alan Wilson's research on population and migration in the 1970s and the 2010s, which supplements his principal contribution - mathematical modelling of urban and regional systems. In the 1970s, drawing on input-output models of economies and working with Philip Rees, Wilson established the accounting basis for Andrei Rogers' multi-regional projection model, adding international migration. Innovative methods were developed to complete demographic accounts, where there were data gaps. In the 2010s, working with Adam Dennett, Wilson systematized methods for estimating migration flows between regions in Europe, employing his family of spatial interaction models. The key aim of both research strands was to ensure that no information was ignored to ensure consistency in population and migration models. The influence of Wilson's contributions to research on population and migration is traced through a survey of subsequent research.     

Routes as latent information—spatial analysis of historical pathways on the peripheries of the Victorian gold fields

Abstract

This article argues that the existing network of roads, arising from socially mediated human behavior, represents a well-preserved feature present across a broad region and contains latent historical information that can be retrieved using appropriate analytical techniques. It presents a method combining iterative cost path modeling and proximity analysis to reconstruct patterns of historical movement, and uses the results of this analysis as a heuristic tool to delineate regional social distinctions evident in characteristics of land appropriation and settlement within an area on the peripheries of the goldfields of central Victoria. The results of the least-cost route and proximity analysis presented in this paper delineate variations in patterns of movement across the study area that suggest distinctions in community development and character, adding depth and nuance to histories of the gold fields and their later years and supporting alternatives to assumptions of linear historical change.     

Modelling diversity: cultural district policies in Doha and Singapore

ABSTRACT

Over the last twenty years, cities around the world have seen the multiplication of cultural district projects, which aim to concentrate cultural organisations in a circumscribed urban space, or to label a neighbourhood’s cultural scene. This paper examines the adoption and adaptation of a globally circulating cultural policy model as an instrument of urban governance. Moving away from the notion of policy transfer, understood as a neutral and unidirectional process through which successful culture-led development models spread to other contexts, I show how local actors mobilise external references to position themselves in a transnational cultural policymaking field, and construct their city as a model. I compare the multi-scalar politics of urban modelling in Doha and Singapore, where globally circulating culture-led development models have been introduced not only as instruments of economic growth, but also as diversity management tools. On the one hand, cultural districts serve as discursive nation building/branding instruments to project an imagined identity locally and internationally. On the other hand, urban elites can mobilise cultural districts to make strategic shifts in the diversity management discourse, through an engagement with the urban environment, and the co-optation civil society actors at multiple scales.     

Eugene Romer’s 1916 Atlas of Poland: Creating a New Nation State

The work of Eugene Romer, founder of Polish geography, was framed by his involvement in the national cause. The Atlas of Poland, a key tool in his political activism, was completed during the First World War under the uncertain circumstances prevailing on the Eastern Front. It focused more on the issue of unification than on boundaries. Skilled in physical geography, Romer made use of a cartographical technique rarely applied to ethnographical maps, that of isopleths. In this article, we address the reasons for this daring innovation and consider Romer’s training in the Austrian and German schools of cartography before examining the reception of the atlas by geographers from the different academic backgrounds.     

高质量发展视角下黄河流域城市网络的结构演变与影响因素研究

城市作为人口、产业等要素聚集地，基于多要素解构城市网络对明确城市高质量发展的内涵具有重要作用。本文通过修正经典引力模型和社会网络方法，分析了高质量视角下黄河流域城市网络结构演变特征，利用QAP方法探求其影响因素。结果表明：(1)黄河流域城市网络基本形成了以郑州、西安、济南、太原、兰州等省会城市为核心，辐射至周边城市的网络结构，网络密度逐渐增大但整体较低，网络通达度相对较高且稳定。(2)城市网络社群内部关联高于社群间关联，说明高质量发展视角下黄河流域城市网络社群溢出效应主要以社群内溢出为主，社群外溢作用较少。(3)区位条件、交通基础设施、产业结构、政府支持强度、科技创新的差异对黄河流域高质量发展的城市网络演变有显著影响。