游客量对炳灵寺第128窟微环境影响初步研究

通过对炳灵寺石窟第128窟连续一年的微环境监测数据分析,结合游客参观统计,探究了游客量对炳灵寺第128窟微环境的影响;其中CO₂浓度与游客量呈正相关,窟内外温差越大,其衰减越快。洞窟温度升高与游客量呈一定程度正相关,温度增量主要为正值,负值与气象条件相关,温度的衰减与温度增量及窟内外温差正相关。窟内相对湿度变化较为复杂,监测期间游客参观对相对湿度影响在-5%～10%范围内,以降低窟内相对湿度为主。研究结果表明,目前的开放模式有助于CO₂浓度衰减,可适当扩大每批次参观人数至10人左右,以应对大客流状况;注重旅游旺季特别是5月、9月下旬至10月中旬时间段洞窟内相对湿度变化的监测,做好游客管理和洞窟相对湿度控制应对措施。本研究对于炳灵寺石窟第128窟及其他相似洞窟的旅游开放管理具有一定指导意义。     

Neoliberalist Planning? Re‐thinking and Re‐casting Sydney's Metropolitan Planning

This paper argues that neoliberalism should be viewed not as a unified coherent project but as a series of complex and overlapping strategies that produce hybrid and always emergent forms of governance. To substantiate this argument, the paper reflects on the recent history of Sydney's metropolitan planning and rejects any simple characterisation of its having been transformed from a social‐democratic to a neoliberal form of governance. Instead it traces the unevenness with which neoliberalist aspirations and forms of governance have been enacted through metropolitan planning. In particular, it examines the enduring scope of state institutional capacity to pursue desired spatial and distributional outcomes through planning and suggests that the current reinvigoration of Sydney's metropolitan planning is an opportunity to enhance that capacity and to pursue ‘after‐neoliberalist’ planning possibilities.     

快速定量装车站液压系统设计

该文首先介绍了快速定量装车系统的结构及工作原理,然后对其液压系统进行了负荷特性分析及系统流量计算,并在此基础上进行了快速定量装车站液压系统设计。该设计有效的满足了装车站高效率、高精度和重载荷的需求,并在现场应用中取得了良好的使用效果。     

Adaptation Machines and the Parasitic Politics of Life in Jamaican Disaster Resilience

This paper unpacks a politics of life at the heart of community‐based disaster management to advance a new understanding of resilience politics. Through an institutional ethnography of participatory resilience programming in Kingston, Jamaica, I explore how staff in Jamaica's national disaster management agency engaged with a qualitatively distinct form of collective life in Kingston's garrison districts. Garrison life has been shaped by the confluence of political economic, cultural, geopolitical force relations, which creates a hyper‐adaptive life that exceeds the techniques and rationalities of neoliberal disaster resilience. I draw on autonomist Marxist and Deleuzian readings of biopolitics to identify a new subject of disaster politics that I call, after Deleuze and Guattari, “adaptation machines”, decentralized apparatuses of capture that are parasitically reliant on the population's immanent adaptive capacities. The concept of adaptation machines enables us to envision resilience politics as a struggle over how to appropriate vulnerable peoples’ world‐forming constituent power.     

Local gender contract and adaptive capacity in smallholder irrigation farming: a case study from the Kenyan drylands

This article presents the local gender contract of a smallholder irrigation farming community in Sibou, Kenya. Women's role in subsistence farming in Africa has mostly been analyzed through the lens of gender division of labor. In addition to this, we used the concept of ‘local gender contract’ to analyze cultural and material preconditions shaping gender-specific tasks in agricultural production, and consequently, men's and women's different strategies for adapting to climate variability. We show that the introduction of cash crops, as a trigger for negotiating women's and men's roles in the agricultural production, results in a process of gender contract renegotiation, and that families engaged in cash cropping are in the process of shifting from a ‘local resource contract’ to a ‘household income contract.’ Based on our analysis, we argue that a transformation of the local gender contract will have a direct impact on the community's adaptive capacity climate variability. It is, therefore, important to take the negotiation of local gender contracts into account in assessments of farming communities' adaptive capacity.     

Complexity,Capacity, and Budget Punctuations

The budgeting literature has long focused on “institutional friction” as a cause of ubiquitous punctuated equilibrium (PE) findings. A recent wave of scholarship looks to identify specific institutional mechanisms that affect the number of punctuations in policy outputs. We contribute to this growing body of research by focusing on the complexity of the institutional environment surrounding a policy area as well as that of the government as a whole. These factors have opposite effects: the more complex a policy area, the greater the likelihood of extreme spending changes. But, higher institutional capacity in general leads to greater stability. To test these ideas, we develop a novel index of budgetary change that balances the conceptual importance of extreme changes while analyzing the entire distribution of budget changes, not only the tails. In addition, we also demonstrate that findings are robust to a number of important distinctions, such as between series associated with slowly moving demographic trends or quickly moving stochastic events. We, therefore, demonstrate the robustness of important findings from the established literature, add a new measure of the dependent variable, and push the literature forward with a new focus on issue complexity and institutional capacity.     

Big data analytics for mitigating carbon emissions in smart cities: opportunities and challenges

The paper addresses the growing scepticism around big data use in the context of smart cities. Big data is said to transform city governments into being more efficient, effective and evidence-based. However, critics point towards the limited capacity of government to overcome the siloed structure of data storage and manage the diverse stakeholders involved in setting up a data ecosystem. On the basis of this, the paper investigates the challenges city governments face when dealing with big data in the context of carbon emission reduction. Through the lens of the evidence-based policy and policy capacity literature, the cities of Copenhagen (Denmark), London (UK), Malmö (Sweden), Oxford (UK) and Vienna (Austria) are analysed. The cases reveal that the institutional complexity underlying big data integration limits local government capacity to set up data management structures that would allow further utilization of big data and that current solutions focus on local pilot sites and outsourcing of data analytics.     

Future Prospects for Population Development in Shanghai

This study analyses the future goals of population development in Shanghai from the viewpoint of population carrying capacity and ecological footprint. The population carrying capacity is one of the fundamental factors researchers and policy-makers need to take into account in managing and planning the development of a country or a region. This study focuses on the case of Shanghai, based on previous ecological footprint analysis, and builds a comprehensive index evaluation model. By applying basic principles of multi-goal decision-making analysis and operating methods of system dynamics, it calculates population carrying capacity corresponding to different standards that resource-economic factors can support. It further explores issues related to population change in the metropolis and relevant policy measures.     

METHODOLOGY FOR THE PROBABILISTIC ASSESSMENT OF q FACTORS. A DAMAGE INDEX APPROACH

The objective of the present work is to present a methodology for the identification of relevant limit states, namely ultimate limit states leading to structural collapse, and for the assessment of design q factors (or force reduction factors) for reinforced concrete structures under seismic loading. It follows a probabilistic approach based on damage indices. The utilised nonlinear models, as well as the damage indices, which are those proposed by Miner and by Park and Ang, are.described. The methodology of analysis is presented emphasising its probabilistic characteristics. Some parametric studies are carried out, including the analysis of one regular plane frame reinforced concrete structure, designed for three different ductility classes (those proposed by Eurocode 8) and assuming different q factors in design. Results show how the chosen damage indices can be used as parameters to characterise the structural response and how the proposed methodology can be used to assess the design q factors. It is also shown that, for moderate seismic input, the three ductility classes are essentially equivalent in terms of maximum damage indices, but that for higher seismic levels the differences are evident, justifying the use of different q factors.     

MOMENT RESISTING WELDED CONNECTIONS: AN EXTENSIVE REVIEW OF DESIGN PRACTICE AND EXPERIMENTAL RESEARCH IN USA,JAPAN AND EUROPE

Welded connections, widely used in seismic moment resisting frames (MRFs) in USA, Japan and Europe, have been extensively investigated during the 1990s in order to improve their performance under severe earthquakes. In order to correctly evaluate the results of experimental research on welded connections, the differences among the American, Japanese and European current practices in designing the frame structural systems and in detailing the beam-to-column connections should be firstly appraised. In this paper, the major aspects characterising the USA, Japan and Europe design practice in moment resisting welded connections are reported, the differences are underlined and the main issues recently addressed in experimental research are reviewed. Among the several parameters which affect the connection performance, attention is focused on the effect of the beam cross-section size. Thus conclusions are drawn in terms of plastic rotation capacity as dependant on the beam size.