Application of Smart Streetlights in Urban Road Lighting

The construction and installation of street lighting is an important element in the modernization of China’s cities.Besides,it also plays an important role in raising the living standards of the people.In recent years,with the technological and economic development,smart street lighting has gradually emerged.Key functions of smart street lighting include road illumination,cultural promotion,meteorological monitoring,public broadcasting,and 5G micro-base stations.The overall quality of smart street lighting construction directly impacts the effectiveness of urban development and the city’s comprehensive growth.This paper analyzes the concept of smart street lighting,its advantages and disadvantages,the functionalities of smart street light systems,and the application of smart street lighting in urban road illumination.

Application of Environmental Psychology in Urban Space Design of China——A Case Study of Environmental Facilities Design of Urban Streets

After analyzing the concept of urban social psychology and environmental psychology, the paper considers that the city is an object shared by thousands of people from different classes, nationalities and characters, and streets and roads are the skeleton and venation of the city, serving for transport and as spaces. Then, it has proposed principles for road landscape design. Based on environmental facilities on streets, urban environmental psychology has been put forward because transport function has been highlighted while space function has been neglected in urban construction, so that facilities' design and construction can be considered from the perspective of human. Finally, some suggestions have been raised in view of problems in mechanism and management during the design and construction of domestic street facilities.

A Laboratory Model for the Flow in Urban Street Canyons Induced by Bottom Heating

Water tank experiments are carried out to investigate the convection flow induced by bottom heating and the effects of the ambient wind on the flow in non-symmetrical urban street canyons based on the PIV (Particle Image Visualization) technique. Fluid experiments show that with calm ambient wind, the flows in the street canyon are completely driven by thermal force, and the convection can reach the upper atmosphere of the street canyon. Horizontal and vertical motions also appear above the roofs of the buildings. These are the conditions which favor the exchange of momentum and air mass between the street canyon and its environment. More than two vortices are induced by the convection, and the complex circulation pattern will vary with time in a wider street canyon. However, in a narrow street canyon, just one vortex appears. With a light ambient wind, the bottom heating and the associated convection result in just one main vortex. As the ambient wind speed increases, the vortex becomes more organized and its center shifts closer to the leeward building.

Numerical and Experimental Studies on Flow and Pollutant Dispersion in Urban Street Canyons

In this study numerical simulations and water tank experiments were used to investigate the flow and pollutant dispersion in an urban street canyon. Two types of canyon geometry were tested. The studies indicate that in a step-up notch canyon （higher buildings on the downstream side of the canyon）, the height and shape of the upstream lower buildings plays an important role in flow pattern and pollutant dispersion, while in a step-down notch canyon （lower buildings on the downstream side）, the downstream lower buildings have little influence. The studies also show that the substitution of tall towers for parailelepiped buildings on one side of the canyon may enhance the street ventilation and decrease the pollutant concentration emitted by motor vehicles.

Residents' Collective Memory of Urban Street and Lane Spaces:A Case Study of the Confucius Temple Block in Nanjing City

Along with the rapid globalization and urbanization,primitive ecological environment and cultural life atmosphere of urban streets and lanes have degraded,memories of the city have been lost,and cities have shown the tendency of convergence and homogenization.Taking the Confucius Temple Block for example,this paper applied cognitive map,oral interview and GIS spatial statistics to study residents' col ective memories of urban street and lane spaces,and found that the locals' collective memories of streets and lanes in the Confucius Temple Block declined gradually in the sequence of "aura area" → "secondary aura area" → "buffer area" → "blind spot area",and "civilian" urban design concept was claimed as the major incentive of the decline.Streets and lanes as important components of urban public spaces have specific historical connotations and genius loci,and they deserve wide concern from the academic circle and the society for their function of protecting collective memories of residents.

Physical Experiments to Investigate the Effects of Street Bottom Heating and Inflow Turbulence on Urban Street-Canyon Flow

The effects of street bottom heating and inflow turbulence on urbanstreet-canyon flow are experimentally investigated using a circulating water channel. Threeexperiments are carried out for a street canyon with a street aspect ratio of 1. Results from eachexperiment with bottom heating or inflow turbulence are compared with those without bottom heatingand appreciable inflow turbulence. It is demonstrated that street bottom heating or inflowturbulence increases the intensity of the canyon vortex. A possible explanation on how street bottomheating or inflow turbulence intensifies the canyon vortex is given from a fluid dynamicalviewpoint.

The Influence of Residents’ Opinions on the Redesign of Urban Underground Streets: A Case Study from <i>Diyi</i>Underground Street

The rapid development of urbanization and rapid growth of urban population have brought about various urban problems, and the development of cities to the ground and underground has become an inevitable choice. Underground street is a kind of underground space types, and it is also an important urban recreational resources and tourism resources. The evaluation of underground street users, especially the residents and tourists, has important reference value for the recreational resources’ redevelopment of underground street. Firstly, this paper reviews the relevant research literature on underground street and Post-Occupancy Evaluation theory, then chooses Diyi Underground Street, Chengdu, China, as the research object, and conducts a questionnaire survey and in-depth interviews on residents’ shopping intention from five dimensions of underground street environment, decoration, commercial form, public facilities and other aspects. Finally, the survey data are analyzed quantitatively. The results show that some influence factors such as air quality, daylighting, decoration style etc. greatly affect the willingness of residents to enter the street. Therefore, residents’ recreational experience should be emphasized during the underground street re-planning according to the above factors.

Congestion Pricing of Urban Street Segments along with MRT Route—The Case Study of Dhaka, Bangladesh

Dhaka, Bangladesh’s capital, already has a congestion problem to handle the ever-growing demand for traffic. The usage of private cars cannot be stopped by charging and the town is not encouraged by quality public transport. It is impossible to enforce congestion prices here in line with traditional cordon pricing systems since the region uses unusual land patterns. However, the current project Mass Rapid Transit (MRT) Line 6, which will be built by 2021, provides the prospect of congestion pricing. A price and optimum approach were established for this article. The congestion price is only payable for the segments and is accessible for private cars under this system. Two urban street segments along the MRT route were selected for the study and congestion toll for a private car is estimated for each segment separately. The sum of the toll in monetary terms is determined using certain associated parameters from the discrepancy from the actual Level of Service (LOS) travel time and traffic flow to the desired LOS. The outcome has shown that the price per passenger car is $0.3 - $0.44. The price is flexible, which means it will vary based on traffic volume. The findings for politicians to enforce congestion pricing are viewed as recommendations.

Human-centered Design for Green Landscape of Urban Streets

This paper first introduces the development process of urban street green landscape in China and the human-centered thinking of the design of urban street green landscape.On the basis of detailed elaboration of the basic theories of urban street green landscape,it analyzes the existing problems and causes for urban street green landscape.Then,from the perspective of human-centered thought,it comes up with several measures for optimizing the green landscape design of urban streets,to provide much more human-centered experience of urban street green landscape.

The Design of Urban Streets for the Aged

In the context of the development of motorization in today's cities,the overall walking situation in the city is deteriorating,and the concern and consideration of pedestrians,especially the vulnerable groups,is seriously lacking.In order to meet the development need of the current aging society,this study tried to transform urban streets for the aged aiming at phenomenon of the loss of pedestrian zones for the aged,and proposed design elements to improve the pedestrian environment of the street,so as to provide the elderly with a street space suitable for they to interact with and improve their quality of life and self-esteem and happiness.Therefore,transforming urban streets suitable for the aged is an important measure to achieve a harmonious human society and an inevitable trend of humanization and sustainable development in an aging society.

Urban Street Design Based on Spatial Experience

As the living place of urban citizens,urban street space covers the activities of people of all ages and is an important space for citizens to carry out public activities and interpersonal communication.The slogan of“people-orientation”is shouted in the construction process of every city street,but the street space design based on people’s personal experience and people’s psychological feeling is the real peopleoriented design.The design techniques of street space are explored from the perspective of people’s space experience.Starting from the elements of urban street space,according to the attributes of street space and people’s experience path in the space,the paper fi nds out the factors affecting the spatial experience of urban streets,and further explores the strategy of building urban street space.From the perspective of space experience,the design of urban street space is explored,in order to provide reference for the future design of urban streets that meet people’s experience.

Application of Smart Lighting in Urban Street Lighting

At present,the number of road engineering projects is increasing,and the corresponding street lighting work is receiving much more attention.In order to improve the lighting,operation,convenience,and energy-saving effect of urban streets,the concept of“smart lighting”needs to be implemented.This includes the planning of an urban street lighting design scheme and the use of appropriate software as well as components to realize significant optimization of the lighting work in urban streets.Therefore,this paper discusses the application measures of smart lighting in urban street lighting to provide reference.

Exploring Location Pattern of Commercial Stores in Shichahai, Beijing from a Street Centrality Perspective

The location pattern of different commercial stores in Shichahai, a historic conservation area in Beijing, was investigated from a street centrality perspective. Many previous studies have investigated the relationship between street centrality and land use patterns or commercial activities at interurban or intraurban scales. We considered Shichahai in this study to determine if street centrality applied at the street scale and if the street network was the only factor influencing the selection of store location. First, the nearest neighbor index, nearest neighbor hierarchical spatial cluster(NNHSC), and kernel density estimation(KDE) methods were used to provide baseline spatial distributions of commercial stores. Second, urban network analysis(UNA) tools were used to measure the street centrality indices under two conditions, with and without the weighting of cultural relics calculated by a principal component analysis(PCA). Finally, both store locations and centrality values at nodes were transformed to one unit(raster pixel) for a correlation analysis.The results showed that three of the four store types were clustered and had their own hotspots that were mostly located in the eastern and central parts of city blocks. The most momentous findings were determined from the street centrality indices. Among the three store types with correlation coefficients above 0.5, all centrality indices with landmark weighting, except straightness, had higher correlations,with closeness with landmark weighting having the highest correlation, followed by betweenness with landmark weighting. Therefore,we statistically concluded that street centrality could apply at the street scale and that the street network was not the only factor that influenced store location pattern, with landmarks also playing a significant role. The results provide guidance in determining the selection strategy for stores in a historic conservation area.

Urban Design Based on Protection of Historic Space of Cultural Heritage:A Case Study of Urban Design of Dongguan District in Xi'an

Located in the east of Xi'an, Dongguan District is the area to the east of the Ming City wall.There is a great deal of precious architectural heritages in the area, including shrines such as the Wangji Temple, the Baxian Temple, the Catholic Church and the Laomu Temple, as well as protected dwellings such as the Xingqing Palace, the royal palace of the flouring period of the Tang Dynasty, and the Courtyard of Family Xi, etc.. Currently, securing Dongguan District protection and development has confronted with severe challenges. Based on the in-depth investigation of the status quo and objective analysis of pros and cons, this paper gives a clear definition for Dongguan District protection and development, and profoundly analyses courtyards, streets, landscape environment and human environment of the Dongguan District, so as to formulate protective methods as well as measures and explore development approaches.

从街道场所到城市区域:美国城市宜居性的研究与实践

“宜居性”是20世纪60年代以来美国人本主义城市设计中的重要议题。区别于现代主义带有浓重乌托邦色彩的宏大城市构想,宜居性理论重点关注微小叙事和日常生活。文章通过详细梳理20世纪60年代以来美国宜居性理论研究和实践的发展历程发现:1996年以前的宜居性研究聚焦于街道—场所尺度,包含两条研究脉络,即从安全的街道到复合型林荫大道和从交往的场所到公共领域的重塑;1996年以后,新城市主义理论的发展推动了“街道—社区—城市—区域”多尺度融合的宜居性研究和实践。在此基础上,对我国的宜居城市建设提出3点启示:以人为本,优化步行和公交系统;关注日常生活,鼓励公共参与;注重多尺度空间要素的一致性和完整性。

Busking in Durham:Relational Performance and Urban Ecology

本文基于在英国达勒姆的观察和访谈,探讨了当地的街头艺人如何在表演中使用策略,与街道环境及行人互动。本研究探讨了街头表演吸引观众的技巧,他们如何理解和驾驭自己在社会中的边缘地位。本文结合生态学理论和参与式观察,认为街头艺人从事的不仅是一种表演,更是一种与环境密切相关的实践。本文解释了街头艺人如何适应城市街区,与陌生人建立联系和互动。此外,艺人有意与刻板印象保持距离,既不表现为乞讨,也不纯粹以营利为目的,而是为城市生活中增加活力和生机,让公众对其行业产生积极的看法。本文通过对街头艺人及其社会关系的关注,意在为街头表演研究增加个人和环境视角。