检索结果-南通市图书馆

Frontiers in Energy 2018年第3期12卷 411-425页

作者： Yi DOU Keijiro OKUOKA Minoru FUJII Hiroki TANIKAWA Tsuyoshi FUJITA Takuya TOGAWA Liang DONG Center for Social and Environmental Systems Research NationalInstitute for Environmental Studies (NIES) 16-20nogawa TsukubaIbaraki 305-8506 Japan Graduate School of Environmental Studies Nagoya University Furo-cho Chikusa-ku Nagoya 464-8601 Japan Graduate School of Environmental Studies Nagoya University Furocho Chikusa-ku Nagoya 464-8601 Japan Center for Social and Environmental Systems Research NationalInstitute for Environmental Studies (NIES) 16-20nogawa TsukubaIbaraki 305-8506 Japan Fukushima Branch National Institute for Environmental Studies (NIES)10-2 Fukasaku Miharu-machi Tamura-gun Fukushima 963-7707Japan Center for Social and Environmental Systems Research NationalInstitute for Environmental Studies (NIES) 16-2 Onogawa TsukubaIbaraki 305-8506 Japan CML Leiden University Leiden the Nether-lands

District heating systems using cogeneration technology and renewable resources are considered as an effective approach to resources conservation and reduction of greenhouse gas （GHG） emissions. However, wide- spread aging and depopulation problems, as well as the popularization of energy-saving technologies in buildings, are estimated to greatly decrease energy consumption, leading to inefficiency in district heating and barriers to technology proliferation. From a long-term perspective, land use changes, especially the progression of compact city plans, have the potential to offset the decrement in energy consumption that maintains the efficiency of district heating systems. An integrated model is developed in this paper based on building cohort analysis to evaluate the economic feasibility and environmental impact of introdu- cing district heating systems to a long-term compact city plan. As applied to a case in the Soma Region of Fukushima, Japan, potential migration from the suburbs to the central station districts is simulated, where district heating based on gas-fired cogeneration is expected to be introduced. The results indicate that guided migration to produce concentrated centers of population can substan- tially increase the heat demand density, which supports a wider application of district heating systems and better low-carbon performance. These results are further dis- cussed in relation to technology innovation and related policies. It is concluded that policies related to urban land use planning and energy management should be integrated and quantitatively evaluated over the long-term with the aim of supporting urban low-carbon sustainable develop- ment.

关键词： building stock compact city district beating energy use Fukushima

Building three-dimensional pedestrian networks in cities

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Underground Space 2021年第2期6卷 217-224页

作者： Jianqiang Cui School of Environment and Science Griffith UniversityBrisbaneAustralia

With the rapid growth of automobile transport over the last century,conflicts between automobile and pedestrian transport have been viewed as a major concern in urban and transport planning.Elevated and underground pedestrian networks,which compensate for sidewalks at the street level and provide alternative options for pedestrians,have been developed in many cities.Elevated and underground pedestrian networks offer pedestrian–car separation in a vertical dimension and efficient connections between transit services and cities for subway passengers.This study aims to provide a balanced understanding of the development of underground pedestrian networks and propose supportive strategies for decision makers,planners,and designers concerned with the future implementation of underground pedestrian networks and the building of three-dimensional pedestrian networks in cities.The study applied textual analysis to examine the topic.The study indicated that three-dimensional pedestrian systems were developed based on historical precedents.It highlighted important considerations(such as dense cities,disaster mitigation and protection,and urban functions)in developing underground pedestrian networks in cities.Furthermore,it discussed significant aspects in planning and designing such networks,including safety,ease of orientation,and convenience.The paper also discussed policy implications in developing underground pedestrian networks and the building of three-dimensional pedestrian networks in cities.

关键词： Pedestrian planning compact city Underground transport

The compactness of spatial structure in Chinese cities:measurement,clustering patterns and influencing factors

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ecosystem Health and Sustainability 2020年第1期6卷 648-661,647页

作者： Fangqi Zhao Lina Tang Quanyi Qiu Gang Wu Key Lab of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamenChina University of Chinese Academy of Sciences BeijingChina State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijingChina

Rapid urbanization in China has led to an excessive urban expansion of built-up areas,which makes quantitative research on compact city important.We adopted density and the degree of mixed land use to measure the compactness of 160 Chinese cities.Spatial autocorrelation analysis was performed to identify spatial clustering patterns,and the relationships between compactness and five variables were explored through regression models.The result shows that in nearly half of the cases,the calculated values of two indices are less than the average.The high or low values of density and the degree of mixed land use tend to be spatially clustered.The hot spot regions of density and the degree of mixed land use lie mainly in the south of China,while the north present as cold spots or the insignificant regions.Urban compactness can be affected by multifaceted factors and the relationships between compactness and five variables are not consistent throughout the areas of analysis.The GWR model can identify this phenomenon and provides a better fit than the OLS model.This study proposed a new approach to measure the compactness,and the results of GWR analysis can conducive to appropriate policy-making based on different local conditions.

关键词： compact city urban spatial structure point of interest geographically weighted regression

Occurrence factors of large vacant lots in central districts and their utilization by local governments in Japan

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Architectural Research 2016年第4期5卷 393-402页

作者： Takeshi Kobayashi Shinji Ikaruga Graduate School of Science and Technology for Innovation Yamaguchi University Yamaguchi 753-8511Japan

In Japan, focal cities experience a number of probtems retated to deterioration of residentiat environment, quality of public service, and vitalization of commercial rand. SpecificaLLy, the presence of Large vacant tots behind sizable stores, office buildings, hospitals, and factories devitatize urban activity and its Landscape. Many local cities are seeking to actuatize a sustainable compact city with an integrated poputation, commerce, traffic and other pubLic services in ways that promote a tow carbon and energy-conserving society. Against the backdrop of these issues, this study examines the occurrence of large vacant lots and their utilization by tocat governments in Japan based on a questionnaire and fietd survey. It highlights severat cases in which a Large vacant tot is used to forward the development of a compact city by a tocat government.

关键词： Large vacant tot Centra｜ district Urban regeneration Land use conversion compact city

Method for the proposal and evaluation of urban structures for compact cities using an expert system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Architectural Research 2016年第4期5卷 403-411页

作者： Shirou Tsuboi Shinji Ikaruga Takeshi Kobayashi Graduate School of Science and Engineering Yamaguchi University Yamaguchi-shi 753-8511 Japan

The world population is continually increasing, but the Japanese population is decreasing. By 2050, the Japanese population is calculated to be close to 100 million people, and by 2060, 40% of the Japanese are estimated to be aged 65 years or more. Data show an increase in the declining birth and aging rates of the population. The development of high-concentration urban structures will be needed to solve such problems. However, a detailed vision of the future is yet to be clarified and in the process of consideration. In this study, we developed an instrument called ＂Population Migration Tool,＂ which is based on plural planning and policy, after we formed a future population distribution model. In addition, We also established a high- concentration urban structure model with this tool with the aim of considering the kind of urban structure local cities should target in the future.

关键词： Local city compact city Future population Visualization Concentration urbanstructure

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

紧凑城市理论对我国城市化的启示

城市经济、区域经济

城市经济、区域经济 2008年第11期 61-63页

作者：吕斌祁磊

借鉴紧凑城市理论，采取高密度、多样化和公交导向的城市土地开发模式，对坚持科学发展观，建设环境友好、资源节约型城市，促进城市化的可持续发展有着重要意义。

关键词：紧凑城市城市化可持续发展城市形态环境 compact city urbanization sustainable development urban form environment

来源：人大复印报刊资料评论

在线全文

人大复印报刊资料

学校读者我要写书评

暂无评论

紧凑还是分散？

城市经济、区域经济