Empirical Formulation for Estimating the Fundamental Frequency of Slender Masonry Structures

The fundamental frequency of a structure enables better assessment of its seismic demand for an efficient design and planning of its maintenance and retrofit strategy. The frequency is independent of the type of external loads, however, depends on structural stiffness, mass, damping and boundary conditions. In the case of slender masonry structures such as towers, minarets chimneys, and pagoda temples, it is influenced by mass and stiffness distribution, connection to adjacent structures, material properties, aspect ratio and slenderness ratio. In this present article, the data collected from various literature reviews on the slender masonry structures regarding dynamic, geometrical, and mechanical characteristics have been correlated to identify the major parameters influencing the fundamental frequency of such structures. The database has been used for developing an empirical formulation for predicting the fundamental frequency of such structures. The comparison between the experimental fundamental frequencies and the estimated fundamental frequencies are carried out in order to define reliability and accuracy of these empirical formulae.     

旅游地文化变迁的影响机理研究:武夷山茶文化案例

本文选取武夷山茶文化为研究样本,借助质性访谈对旅游地文化变迁的影响因素进行探索性认知.结果表明:旅游地文化变迁的主要影响因素是文化因素、社会因素、市场因素和资本因素.本文根据影响因子的量化研究,把旅游地文化变迁的影响机理概括为:文化内驱力、社会推动力、市场调控力和资本外驱力合力驱动的结果.     

Seasonal weather sensitivity,temperature thresholds,and climate change impacts for park visitation

Historical park visitation and weather data, taken at the daily time scale from 2000 to 2009 for Pinery Provincial Park in southern Ontario (Canada), were analysed as an objective measure of the weather sensitivity, temperature thresholds, and potential impacts of projected climate change for park visitation. Three seasonal weather-visitation models were constructed using multivariable linear regression (peak, shoulder, off-season). To account for both natural and institutional seasonality, the weather-visitation models included both climatic (temperature, precipitation) and social (weekends, holidays) variables, which demonstrated equably comparable effects on visitation across the three models. Critical temperature thresholds were identified for each season using one-way analysis of variance to determine the range of temperatures within which the threshold was evident; the specific degree of temperature associated with the threshold was identified within the seasonal regression models. Temperatures over 33 °C during the peak season and over 29 °C during the shoulder season indicated critical thresholds at which point conditions that were ‘too hot’ for some caused a decline in visitation. Furthermore, temperatures below 11 °C indicated another critical threshold, where conditions were ‘too cold’ for most and therefore park visitation was less sensitive to temperature variability below this threshold. A partial sensitivity analysis for the impact of a warmer, wetter climate on park visitation was conducted, illustrating the effect of a 1 °C to 5 °C warming in maximum temperatures, coupled with a 5% to 15% increase in total precipitation. In response to projected climate change, the weather-visitation models suggested that for each additional degree of warming experienced, despite the negative effects of increasing precipitation and more frequent heat extremes, annual park visitation could increase by 3.1%, annually. The projected increase in park visitation as a result of rising temperatures was mainly associated with shoulder season visitation, with only minor increases in peak season visitation.     

(Un)related variety,urban milieu and tourism-company differentiation

High tourism growth in single-asset tourism cities is often associated with a standardization of supply of products and services by tourism entrepreneurs. However, and in contrast to this common-sense view, tourism growth in specific urban tourism milieus in the ‘sun-sea-sand’ tourism city of Antalya has stimulated tourism entrepreneurs to differentiate their products. Contrary to most economic-geography literature on spatial clusters, evolutionary economic geographers argue that inter-industry relations of (un)related variety are crucial in inter-firm differentiation. The aim of the paper is to define the factors that influence tourism-firm differentiation in the single-asset tourism city of Antalya. The empirical research is theoretically informed by evolutionary economic-geography literature, and pays much attention to the role different urban sub-milieus play in tourism-firm differentiation. It is the first research on the relation between (un)related variety and tourism-firm differentiation in tourism studies. The empirical research is based on primary data collected by a firm-level survey (hotels, restaurants, jewellery- and retail-trade firms) in the city of Antalya. The factors that influence tourism-firm differentiation are explored by using quantitative methods of analysis (an econometric logit-regression model and a correspondence analysis). The main result of the empirical research is that investments in firms in related sectors, in our case jewellery companies and hotels, are positively and significantly related to tourism-firm differentiation. In addition, the location tourism firms in areas visited by a mix of consumers (tourists and locals) also is positively and significantly related to inter-firm differentiation whereas urban milieus visited by locals only have a negative effect.     

Climate change adaptation of the tourism sector in the Bolivian Andes

Over the last 40 years, warmer temperatures have caused a considerable decrease in snow cover on glaciers and high rates of glacial melt, particularly in tropical mountains. In the Bolivian Andes, the Chacaltaya glacier (5400 masl) had been a tourist destination known as the highest ski slope in the world since 1939. As a result of climate change, skiing has not been possible after 1987 and the glacier definitely disappeared in 2009. However, since 2005, the place has become a new attraction for tourists. Travel agencies in La Paz now offer day trips to the Chacaltaya site. In order to understand the present attraction of the site and its potential for reproduction elsewhere, 25 semi-structured interviews were conducted with various categories of stakeholders involved in the tourism industry in La Paz, and archives and images were analysed. Our results show that the multifunctional character of this tourist site, including easy access to a summit, beautiful views, acclimatisation to altitude and opportunity to experience snow, are key factors in its renewed attraction for visitors, together with, to a lesser extent, the incentive of being able to watch a famous and evident full disappearance of a glacier and former ski slope. The stakeholders' groups share general views and perceptions about environmental changes and about the qualities of the site, but they also differ in terms of projects and evaluation of potential attractiveness. In particular, the development of the visibility of climate change impacts on mountain environment is valued by experts or by members of the Andean Club, but not by travel agencies. The example of Chacaltaya shows that multifunctional tourist sites may still be attractive in the future.     

Beyond convention: reimagining indigenous tourism

As a knowledge domain, contemporary indigenous tourism is framed in reference to cultures conventionally recognized as ‘indigenous,’ and engages this almost exclusively from a supply-side perspective. This paper reimagines indigeneity and indigenous tourism as embracing also the other 94% of global population. From a utilitarian perspective, this inclusion of ‘nonconventional indigenous people’ harbors opportunities to advance the sustainability agenda by reconnecting modern mainstream cultures, through personal exposure in dispersed settings, with ancestral roots and associated sustainable livelihoods. Such reconnections are framed as a form of re-indigenization that may be especially attractive to ‘travel promiscuous’ diasporic populations such as those found in the ‘settler’ countries of Canada, United States, Australia, and New Zealand. Articulation of this concept could be facilitated by existing knowledge domains and products in heritage tourism, rural tourism, and urban tourism, as well as sustainable tourism. Rather than usurping conventional indigenous efforts to re-indigenize and re-empower, it is contended that the nonconventional dimension can coexist with and even reinforce the latter, while enriching the dimensions of indigenous tourism as a dynamic knowledge domain.     

衣及权力:明代中国的礼仪、服装与国家权威

As soon as Zhu Yuanzhang, the founder of the Ming Dynasty, assumed the throne, he and his Confucian assistants imposed a system of clothing regulation on the court and society in order to create a hierarchical power structure. As an important aspect of Chinese civilization, the clothing system functioned to form a social hierarchy, to regulate people’s activities, to harmonize the relations among the people, and finally to make a stable society under the close control of the state. The state control in the Ming remained effective until the reigns of Hongzhi (1488–1506) and Zhengde (1506–1521), when commercialization released people’s consumption desires and economic dynamics and caused deregulation of the Ming clothing system, which eventually undermined the state authority.     

The Role of the Development Industry in Shaping Urban Social Space: a Conceptual Model

Socio‐spatial differentiation or the spatial arrangement of social groups in cities has long been the subject of scholarly attention in urban studies from a variety of perspectives. In many contemporary societies, the development industry plays an important and growing role in socio‐spatial differentiation. This paper presents a conceptual model for the empirical analysis of the role of this industry in shaping urban social space.     

论旅游地理学的研究核心

本文从闲暇、游憩和旅游三个概念出发,首先讨论了旅游地理学的研究对象。然后从旅游客源地、旅游通道和旅游目的地的分析提出了旅游地理学的研究核心,简析了每一项研究内容。最后结合中国旅游业发展的现状,探讨了90年代中国旅游地理研究应注意的问题。     

试论旅游项目可行性研究的理论与实践

本文论述了旅游项目的可行性研究的特征,分析了目前可行性研究工作的常见问题,剖析了以通过审批为目的的编造可行性的主要动机。