Jiaxuan Tang's Urban Design Portfolio Early 2023

Portfolio of Jiaxuan Tang

Master of Regional Planning Cornell University B.E. of Urban and Rural Planning Peking University +1 (607) 280-6493 jt586@cornell.edu

Curriculum Vitae

Gemeinschaft & Gesellschaft Factory Turned to Youth Apartments Offering Choices to Various Modes of Shared Living

Kaleidoscope: connecting Oakland Art as connection / Art as relefction / Art as attraction

Riverside Living Belt: opening and mixing

Regeneration of the Riverside Space for Breaking Class Segregation and Isolation From Nature

“Axial Foshan” Urban Transit Mode Research and Design Project

Cheese House+

Creative Residential Design with Spacial Streamline Which is of Broad Adaptability and Easiness to Fit in the Neighborhood

Other Work

Thesis: Investigating urban residents’ commuting patterns and transport accessibility inequality using online car-hailing positioning data: A CASE of CHENGDU

“A hunter of shadows, himself a shade.” Homer, Odyssey, II. 572.

JIAXUAN TANG

Master of Regional Planning Cornell University

Student Work

College of Architecture, Art, and Planning, Cornell University Graduate Teaching and Research Assistant

Feb. 2022 - May. 2022 (Estimated)

Peking University Student Union Deputy Minister of Publicity Department Sept. 2017 - Jun. 2018

Peking University Student Planning Association League Secretary Sept. 2018 -Jun. 2019

Scholarship & Honor

Merit Student of Peking University 2019 - 2020

The Third Prize of CASC Scholarship 2019 - 2020

Academic Awards

The 28th “Challenge Cup” of Peking University May Fourth Youth Science Award Second Prize

Peking University’s Summer Social Practice Program for Students in the 2018-2019 Academic Year Outstanding Individual

Practice & Employment

“Building a one-hour living circle around Beijing and Jizhou building a quality city with a living circle” project research Committee Member

Apr. 2018 - May. 2018

National Institute of Macroeconomics, Development and Reform Commission

Survey of towns and villages in the overall planning of land and space in Wuqing District Investigator Jun. 2019 - Jul. 2019

School of Urban and Environmental Sciences, Peking University

Arcplus East China Architectural Design & Research Institute Co., Ltd. Assistant Planner (Intern) Jul. 2020 - Oct. 2020

https://www.linkedin.com/in/tangjiaxuan/

+1 (607) 280-6493 jt586@cornell.edu 400 Triphammer Rd., Ithaca NY 14850

Education

Master of Regional Planning College of Architecture, Art, and Planning, Cornell University Sept. 2021 - May. 2023 (Estimated) Cumulative GPA: 3.90/4.30

B. Engineering in Urban and Rural Planning College of Urban and Environmental Sciences, Peking University Sept. 2016 – Jul. 2021

Cumulative GPA: 3.43/4.00 -Design Course GPA: 3.79/4.00

Core Course: Architectural Design I (89/100) Architectural Design II (90/100) Urban and Rural Community Space Planning and Design (86/100) Urban Design (89/100) Introduction to Urban Morphology (92/100) Urban Master Planning (89/100) Detailed Planning (91/100) Urban Public Space Planning and Design (94/100)

B. Economics (second degree) National School of Development, Peking University Sept. 2018 – Jul. 2021

Researches

Investigating urban residents’ commuting patterns and transport accessibility inequality using online car-hailing positioning data Apr. 2018 - Nov. 2019

Undergraduate research project, Paper, Co-author with Li. J Second Prize of The 28th "Challenge Cup" Series of Peking University May Fourth Youth Science Award Supervisor: Zhao Pengjun, Researcher, School of Urban and Environmental Sciences, Peking University

Chinese community during the epidemic (tentative topic) research Apr. 2020 - Jul. 2020

Guided Researh, Main Participant Supervisor: Wang Fang, Professor, School of Architecture and Landscape, Peking University

Modern Megastructures and its Impact on traditional urban texture: a Beijing example Feb. 2020 - Sept. 2020

Conference Paper

Released on The 27th International Seminar on Urban From (International Conference) Supervisor: Song Feng, Professor, School of Urban and Environmental Sciences, Peking University

Language & Skills

GRE: 324

Verbal Reasoning: 154; Quantitative Reasoning: 170; Analytical Writing: 3.0

TOEFL: 102

CET4: 673 CET6: 599

Pofessional Skills AutoCAD; ArcGIS/QGIS; TransCAD; PostgreSQL; Python; Rhino; SketchUp; Adobe Family

01LOCATION: Xi’an, Shaanxi, China

TYPE: Academic (2018 Spring)

ROLE: 50% Design, 80% Drawing (most graphs were drawn seperately)

ADVISOR: Linlin Dai, linlindai@pku.edu.cn

Gemeinschaft & Gesellschaft

FACTORY TURNED TO YOUTH APARTMENTS OFFERING CHOICES TO VARIOUS MODES OF SHARED LIVING

Tönnies invented the terms Gemeinschaft and Gesellschaft (community and society) to denote the pre- & post-industrial societies. Gemeinschaft relates to personal relations, bonding, and responsibilities, and Gesellschaft, the modern, impersonal, and the random.

While Tönnies hankered for the old Gemeinschaft, we also appreciate the erratic encounters, the wide networks, and endless opportunities in the Gesellschaft. We believe people have a choice - whether to “bond” in Gemeinschaft, to “wander” in Gesellschaft, or to just be on one’s own.

The factory used to have a grid structure: the column grid, and the roof made of replicated slopes. We use this grid and densify it by three times. On the third and fourth floors, we properly arranged the grid so that 60% of the rooms are for private uses, and that each private room on the 3rd floor should have a least one, preferrably two and more, doors into different activity spaces.

FROM THE PAST TO THE FUTURE

New things always come from the old, especially when something needs to be inherited. The Gesellschaft and the Gemeinshaft, though oringinally came from Tönnies, are representing two living conditions near the factory: one is from the loosely organized immigrant villages, whose community is alienated, dangerous, but also full of opportunities. The other is from the factory living community: united, rigid, but sometimes boring. As the city being regenerated, our design aims to inherit the core spirits of these communities, and provide something more to the young generation: the possibility to choose what they want.

Jagged Roof

The jaggeed roof facing the south provides good lighting for the textile machines, while avoiding direct sunlight to cause rapid temperature changes in the plant. During the renovation, we newly added a skylight facing the south to ensure good lighting in the living environment.

Roof Beams

Roof beams are a necessary part of supporting the roof, and are evenly distributed horizontally below each row of roofs.

During the renovation, we cut the small room from the position of the roof beam to minimize its negative impact on the living space.

Drains

Drain is an auxiliary structure of the jagged roof. In the original factory building, the space occupied by the drains does not affect production, but when it is transformed into a residential building, they hinders the connection of the space. Therefore, we reconstructed the drains to minimize the space occupied by it.

Column Nets

The column net is the main structure supporting the plant.

The original factory buildings were mostly one or two floors, with extremely high storey heights, so we added another set of small column nets to support our new structure.

ORIGINAL STRUCTURE OF THE PLANT

MODULAR CONSTRUCTION SYSTEM

Prefab Frame Structure

The load-bearing beam is connected to the column net by the tenon-and-mortise structure.

Column Net and Plug-in Wall

The prefabricated stair module can be easily moved to change the space structure.

Depending on the location, the same beam may be connected to 2, 3, or 4 load-bearing beams.

The floor slab is placed on the load-bearing beam through the supporting structure, so it can be replaced and rotated.

There are large column nets and small column nets. The large column nets are based on the original structure of the factory building, and the small column nets are newly added auxiliary supporting structures.

The plug-in wall ensures that the room can be switched between different space division methods, and the wall can be furnished with furniture to provide a convenient living experience.

The activity space corresponds to the open space on the fourth floor and is enclosed in several neighbors (because there is no corridor). The activity space may consist of 1-4 small rooms, which means different numbers of neighbors. Neighbors conduct public activities in this space to create opportunities for communication.

Unlike the randomly generated neighbors on the third floor, the working space on the second floor is used by a group of people who are determined to work together when they move in, which directly determines the arrangement of the personal rooms of this group. It is worth noting that colleagues who work together on the second floor do not necessarily share the same public space on the third floor (and vice versa), which provides different kinds of interpersonal relationships.

Open public space with supermarkets, gyms, bars and other places. Not only serving the residents of the building, but also open to surrounding communities.

Gemeinschaft on 2nd Floor Meeting, cooperate, brainstorm

[100% Drawing] [100% Drawing] [100% Drawing]

Private Rooms on 4th Floor Live, entertain, rest

Gesellschaft on 3rd Floor Work, share, encounter

02LOCATION: Oakland CA, United States

TYPE: Competition (ULI Hines, 2022 Winter, Two Weeks)

ROLE: Group Study & Group Design

ADVISOR: Mitch J. Glass from Cornell AAP

Kaleidoscope: connecting Oakland

ART AS CONNECTION / ART AS RELEFCTION / ART AS ATTRACTION

Using art, music, food, and local culture, Kaleidoscope is a project that is aimed at integrating the Oakland community that has been polarized based on socio-economic stature and race. The plan is to create a sprawling hub that attracts artists, locals, tourists and even the homeless people to demonstrate and experience the art-filled canvas like streets. One of the development's paramount objectives is to provide equitable housing and economic opportunities, neighborhood connectivity, and even homelessness rehabilitation programs to create social harmony in the area.

Located in the heart of Kaleidoscope, the Oakland Arcade, which is the former I-980 highway, has been redefined as an urban spine and rehabilitated into a continuous landscape as well as an integrative cultural corridor through participatory artistic works. People can experience distinct urban landscapes from various areas both above and below this iconic connection from Old Oakland to Chinatown and the Jack London District. On the other hand, Oakland Arcade embraces everyone who wants to have a taste of Oakland’s diverse charm, share their own culture, or just take a rest. The local artworks from the vibrant Art & Craft Bazaar, the under-bridge gallery, and studios, will fascinate locals and visitors alike. The cable cars that run across Kaleidoscope would also provide them with a dazzling glimpse of this colorful town. Every season, Kaleidoscope hosts a plethora of activities that bring together locals and people from surrounding neighborhoods.

The commercial and residential buildings, together with the Oakland Arcade, provide opportunities to foster booming industries within the inclusive vibe of Oakland, which is also linked to the businesses in Central Core District. While the Art & Craft Bazaar and the affordable retail spaces support local businesses, the commercial building encourages regional economy. Besides making profits, Kaleidoscope is also designed to fulfill the local daily demands. On both sides of the Oakland Arcade, there are parking lots, department stores as well as shopping malls, for not only nearby residents, but also citizens from surrounding neighborhoods. Residents can also explore their art talent in the public creative spaces. All residents who wish to explore a healthy lifestyle in Oakland would appreciate the walking and biking friendly environment with ample sports facilities.

Kaleidoscope provides homeless people with 4,900 beds of transitional housing and van-parking lots. They are trained for employment in the skill-development program. Moreover, some of them could be offered entry-level jobs in the Oakland Arcade, sports fields and the community center. Once they earn enough money, they can move into the sufficient affordable housing units provided to low-income individuals. Kaleidoscope welcomes people with different cultural backgrounds to search for a sense of belonging.

Designed to enhance local sustainability, Kaleidoscope keeps its residents from urban flooding and heatwaves, with its rain gardens, urban bioswales, green walls, green roof gardens, and permeable pavements. More environment-friendly materials are used to construct buildings operated by solar energy and compliant with seismic code. Abundant open spaces are designed to respond to emergencies for Kaleidoscope and surrounding neighborhoods.

DE VE LOP ING P RO JE CTS

EC ONOMIC H O T S POT ART, CU LTURE , HIS TORY

Technology ilibaniatsus

Art

tnemeganaM

Balance the cost of affordable housing market housing

Mix affordable and marketing housing community

Renovate the freeway underpasses bazaar and studios to make them more residents

Old Oakland, West Oakland and Chinatown pedestrian streets at the freeway underpasses above

Create a walking and biking friendly

Offer transitional housing, van-parking programs and jobs for homeless people, affordable housing

Provide more public space than currently and sports

Foster booming art and commercial

Art

Phase 1

The first phase will see through the development of a central focal point which extends out to the bordering neighborhoods. It comprises all segments of housing including transitional housing for the homeless. It also has a healthy mix of retail spaces that cater to larger anchor tenants and affordable retail spaces that provide opportunities to local artists and the economically and racially marginalized communities. Phase 1 also includes market rate office spaces and development under the bridges that connect the neighborhoods on the other side of highways I-980 and I-880. This is to be developed at the cost of 1.4 billion dollars. It however sees a healthy levered IRR of 10.34%.

Phase 2

The second phase capitalizes on the housing and retail demand generated by phase 1. It also houses skill development programs for the homeless community to reintegrate them into society by training them to get employed. Phase 2 is to be developed at a cost of 1.33 billion dollars while seeing a levered IRR of 25%.

UNLEVERAGED IRR 8%

LEVERAGED IRR 13%

From a financial perspective, Kaleidoscope is a project aimed at providing equitable housing and economic opportunities to the socio-economically and racially diverse demographic of Oakland. It uses the power of art in the built environment to bring harmony within the local populace.

In order to make this financially feasible, the development team has decided to use a mix of high-end, market-rate as well as affordable housing and commercial spaces to offset the losses incurred by providing equitable housing and economic opportunities for the marginalized communities. We have also made negotiations with the city government to provide free land for every square foot of land required to develop transitional housing for the homeless community.

The project is divided into two phases to maximize the levered advantages of construction and permanent loans. The first phase will first see through the purchase of the existing Police Administration Facility which will provide the police department funds to temporarily lease out a location in Jack London while their new facility in Hegenberger is being constructed. The authority has planned to sell government bonds to

03LOCATION: Xi’an, Shaanxi, China

TYPE: Academic (2020 Spring)

ROLE: Group Study & Individual Design

ADVISOR: Feng Song, songfeng@urban.pku.edu.cn

Riverside Living Belt: opening & mixing

REGENERATION OF THE RIVERSIDE SPACE FOR BREAKING CLASS SEGREGATION AND ISOLATION FROM NATURE

For a long time in China, the attitude of modern cities towards urban villages has been so rude: they besieged first, soon everything is demolished, and then come the new buildings, new blocks, and new living logic. This has also led to class segreation between urban residents and villagers. This project selects a typical place where the village and the city intervene: a narrow strip by the river bank. The construction here after 2010 has not only brought isolated classes, but also destroyed nature that is almost isolated from people. The purpose of this project is to find out another way to build this area, aiming to create opportunities for people of different classes to interact and restore the connection between man and nature through critical conservation and construction.

PRE-DESIGN STUDY: What Should Future City Be Like?

We perceive the city as a network of all sorts of human settlements: a home that we all share. The future, on the other hand, is synonym for ideals: whether it be the christian salvation, the Communist emancipation, or the modernist’s positive objectives. Thus, the cities of the future are the ideals of the shared home What can city planners to do? By manipulating physical space, we adjust relations beyond physical spheres. And we believe that good relations are always open and connected, whether between humans and humans, humans and nature, or humans and time. Thus is the OPEN CITY INITIATIVE

THEORIES

Durkheim & Toennis Interest driven city labor-division, community vanishes

Agora: paradigm public sphere of, influence, interaction... Village

Foucault: panoptic prison’s absolute hierarchy Unit-buildings bring aloofness Neighborhood unit initiative 1970s 1980s 19c

Jacobs: street community Democracy Reason Fallacy Refutation Ration Viewpoint Habermas: public sphere of reason, for democracy Internet: virtual agora?

3cBC 1950s 1920s 1960s 1990s

RECREATE PUBLIC SPHERE VIA AGORA

City: Human space Away from nature

Howard: Idyllic city The combination of city and country Low-carbon ecological city

Symbiotic city The Sponge City 1890s Branch1 Branch2 Branch3

Anthropocentrism

Kevin Lynch: city image as cognitive image

PROMOTE RELATIONSHIP VIA CITY DESIGN

Jane Jacobs: organic hotistic city activity diversity

Metabolist movement: prefabrication & renewal units VS. framework Conzen: as human Colin Rowe: memory makes identity

1960s 1980s 1970s 2000s 1980s 1960s 1970s

am ......

Aldo Rossi: city memory as collective memory MEM ORY Who am I?

City memory: city’s identity?

Urban organic renewal: internal order proper scale relation Memory Norberg-Schulz: place spirit INHERIT MEMORY VIA SPACE CONTINUITY

INITIATIVE

Community:

Ba River Chan River

Urban Core

Bay

Hill

Urban Village

Modern Residential Area* Beiniusi Village, with a history of more than 100 years.

Modern Residential Area*

Wasteland

Destroied farmland, waiting for further construction.

Commercial Building*

Firehouse Wasteland Road

Destroied farmland, waiting for further construction.

*The analysis is based based on year 2006, area and the commercial

During the nearest 20 years, the original rural villages, which were ones surrounded with fields, have becoming invaded by modern residential and business areas. However, a fusion had never happen between them, and the villagers become more and more isolated.

A Business Zone I

O

ce,

Mall, Subway

Establish a TOD block close to the subway to promote the economic development of the area.

B Regenerated Urban Village & Urban Farm

“Village”, Community, Living & Farming

Renew the urban village, retain its original texture and community, and intersperse community centers to improve the living standards of residents. Develop urban farms, encourage urban residents and villagers to interact by activities, promoting class integration.

C

Leisure & Shopping Zone

Studio, Shop, Bar & Club

The low-density commercial area ensures a good environment in the core, while providing a variety of venues for residents, office workers and pedestrians to move around.

D Lakefront Park

Activity, Leisure, Nature

Introduce lake water into the park to create a lakeside park with public activity space.

E Business Zone II

O ce, Mall, Hotel & Apartment

Waterfront high-tech park, providing good office, hotel and apartment locations.

Buildings

High Line & Bridges

High

Green Space

Continuous

Blocks & Roads

Streamlined

BLOCK A & B GROUND FLOOR

Due to its proximity to the subway station, Block A is designed as a TOD center, aiming to provide efficient office space for white-collar and other workers, as well as excellent commercial service functions. Its location at the northern end ensures that the flow of people in the office area will not affect the life of the southern blocks. At the same time, the northernmost square serves as the entrance to the entire site and can be used to organize large-scale events. The circular corridor further enhances the mobility between these commercial buildings.

Block B is the most special block in the main area. The transformation of the urban village retains the original residential form, while providing community centers and urban farms for its residents to communicate internally and externally. The farm, the hill and the observation deck next to it constitute the landscape node of the entire area to reflect the theme of the integration of the design and nature. These areas are open to everyone, ensuring fairness.

Block C is the lowest-density area in the site, providing multiple functions to enhance the diversity and innovation of the entire area. Low-density buildings provide multiple functions including studios, bars, cafes, shops, and attract residents and passing pedestrians to rest here with a good environment and passability. In addition, art installations, exhibition halls, etc. can radiate to the space outside the block to provide services to the entire urban area.

Block D provides an intimate waterfront experience, through a unique centripetal landscape design to create scattered and diverse green and activity spaces to maximize the landscape utility. The bridge on the lake continues the road of the green belt, providing a variety of walking experiences. These unique designs that change over time also make this area more attractive.

Block E is located at the southernmost end of the entire area, providing commercial and office space with good views. The hotels, apartments, etc. opened in this area can not only enjoy good internal scenery, but also good external traffic conditions.

“Axial

Nowadays, the city Foshan urban modernization process hugely impacts citizens health for less exercise field is available for them to do so. Considering about this, I hope to provide the citizens with a ground to exercise with the limitation of boundary. The design site locates in the high-density residential zone between old industrial renewal zone and newly-development downtown where extraordinarily little public space exist. The site is separated with blocks, one is Han Kow prison which will be removed, one is migrant workers’ gathering zone which is planned to be set with CBD and the last one is abandoned factory. The site is located in the center of the connection zone of economic development zone and old industrial renewal zone .

historical spot commercial area high-density resident

LOCATION: Foshan, Guangdong, China

TYPE: Academic (2019 Spring)

“Axial Foshan”

URBAN TRANSIT MODE RESEARCH AND DESIGN PROJECT

ROLE: 50% Study, 50% Design Considering residential with 3 is an

In the urban design of Foshan City, Guangdong Province, China, I try to reconnect the fragmentary and broken public activity space due to the rapid urban development. So the hinge point of urban axis appears in the site, which will connect the city including historical landscape, new handicraft production, and high-density residential area with traffic space as the core. After the connection is completed, the area will provide the vitality of urban renewal for this ancient historical block. Using the new space sequence composed of these elements, I try to expose different layers of Foshan to tourists as well as providing higher quality life for local residents. In the urban scale, this reconfiguration is not a surrender of the existing environment, but an attempt to create dynamic and effective social activities.

SITE STRATEGY

The first axis connects the city's largest green park and several of the most important historical and cultural heritage reserves. This axis connecting the main landscape will also provide a new development mode for the city's tourism industry: integrated cultural experience travel service.

The second urban axis is a response to Foshan's once thriving handicraft industry and industrial park. This axis connects the railway lines and the largest docks used for military transport during the war. The direct connection with Fenjiang River provides convenient traffic conditions, favorable conditions for the revival of Foshan's manufacturing industry, and is open to the public in the form of industrial parks.

The third axis responds to the upcoming new metro line. The line will become a new traffic main line after opening. This axis connects the two subway stations across the site, and a highrise commercial residential office integration community is established in the middle. The new green space system also provides public activity space for the surrounding low-density communities.

The division of block and diversity in function and operation mode allow different developers share the block,or a staging and separation in the devel- opment process.

TYPOLOGY ANALYSIS

The public space of high-rise residential buildings extends to lowdensity residential areas, improves the efficiency of public space use, and introduces more greening.

TYPOLOGY ANALYSIS

The mutual penetration and articipation of different public spaces add a variety of possibilities and colorful public spaces to the urban life.

HIGH-DENSITY LIVING AREA

CENTRAL

High tech Industrial Zone is the continuation of Foshan traditional handicraft industry. At the same time, these creative parks will become Foshan's new industrial center combining commerce and landscape.

LOCATION: Shanghai, China

TYPE: Academic (2017 Spring)

ROLE: Individual Work

Cheese House +

CREATIVE RESIDENTIAL DESIGN WITH SPACIAL STREAMLINE WHICH IS OF BROAD ADAPTABILITY AND EASINESS TO FIT IN THE NEIGHBORHOOD

I always believe that the design of a building should serve its function. In this case, behind the innovative residential structure is a new exploration of the relative spatial relationships in individual residences. Through a cheese-like spatial cutting method, a smoother spatial organization, a more beautiful engineering structure and a better user experience than traditional houses are realized.

Starting from the external form of the entrance, the space that passes through the upper and lower sides is used to attract people and Then enter the sphere as a traffic stream, and form a complete streamline from the entrance to the functional area. Finally, the relationship between the sphere and the segmented wall is processed, and some of them directly intersect and partially spatial changes. Get a rich space experience.

SPACIAL ANALYSIS

The first floor space is connected by the three-way door that meets the T-junction.

There is a private garden and a framing garden.

At the same time, the interior is brought to the interior. After the internal streamline is determined, the vertical direction divides the grid and arranges functions.

Since the exterior wall is a grille, the walls in the room are not closed.

Sphere Intersection

Sphere Intersection

Looking From the Living Room

Sphere Though Sphere Opening

Sphere Connection

Sphere Though

SECTIONAL PERSPECTIVE

When the sphere used as the traffic space are connected, the ntersecting parts are combined and the internal woids are retained, and finally the holes are opened at the beganning and the end, achieving spatial changes in space.

Open Door Connection Facade Floor Relationship

South Facade

North Facade

Thank you my dear!

Hi! Have a nice day!

I’m here, try to find me. Where are you papa?

The indoor spherical traffic and the outer casing are echoed by the window opening formmed by the Boolean subtraction method, and two large and high passage spaces are arranged according to the traffic distribution, so that the layers are separated from each other and connected with each other, thereby enhancing the sense of belonging of the home.

unprecedented comprehensiveness. This paper attempts to understand urban residents’ commuting patterns in Chengdu, as well as factors that influence them, using online car-hailing positioning data. In particular, by examining the differences in commuting patterns between public housing communities and ordinary communities, we can inspect transport accessibility issues. Our results confirm Chengdu as highly single-centered city, with occupations much more centralized than residential areas, which has contributed to heavy commuting burdens to residents living in outlying areas of Chengdu, especially residents living in public housing that are typically far from the city center. We find that travel distance and substitutability with public transport are two significant factors that exert negative influence the usage rates of online car-hailing in commuting. Moreover, we have found that public-housing commuters do not display significant differences in the distance, distribution of destinations or usage rates of online car-hailing, while avoiding online car-hailing as their travel mode, implicating that they are faced with greater commuting burdens and fewer commuting options.

pengjun.zhao@pku.edu.cn

The Rectangular Region wherethrough the trajectories of the trips in the dataset pass

Commuting in different hours (break

A Visualization of the raw data

THESIS: Investigating urban residents’ commuting patterns and transport accessibility inequality using online car-hailing positioning data: A CASE of CHENGDU

Commuting distance and duration of residents living different parts of the city during morning rush (break points for 10 equal groups)

Emergence of megacities, job-housing separation, & commuting.

-Transitioning socio-economy, growing commuting burdens (52 min in Beijing, 2012).

-Modal share: Who takes the taxi?

-What determines commuting? Outskirt large communities… Transport accessibility inequalities.

-Heavy commuting burdens on typical public-housing communities.

-Does public transport make it more equal?

Positioning devices: big data, electronic footprints, & new methods.

-Mobile phones, social media check-ins, taxis, smart cards…

-Features of big data: Volume, velocity, wide coverage, obtainability, low information density.

-How to mine: volume remedies for low info density. Trajectories, hot spots, urban structure…

WHAT WE DO

-To understand Chengdu residents’ commuting patterns using online car-hailing positioning data.

-To probe into transport inequality issues via investigating differences between public-housing & ordinary communities.

-To advise on public policies.

METHODOLOGY

Mining commuting trips from Didi trips (similar with taxi).

-Modal share of taxi: approximately 2%; yet unique features help understand factors that influence modal share.

-Data mining technique characterized by DBSCAN. City-scale investigations.

-Spatio-temporal patterns of online car-hailing commuting (departures, destinations, duration, etc.) while revealing monocentric urban structures.

Finer, community-scale investigations.

-Integrating additional data: demographic & geographic. -Investigating factors that influence online car-hailing usage.

-Probing inequalities through differences between public housing & ordinary communities.

Making use of two features of commuting trips Spatio-temporal concentration. Recurrence.

•

24 hours of workdays in 3 consecutive weeks Fridays excluded.

Step 2: Locational Restrictions.

drop-off peaks: 8-11:00

pick-up peaks: 17-20:00

the other

CONCLUDING REMARKS

Major contributions & findings.

-Methodology: the integration of demographic/geographic data concerning commuters.

-Online car-hailing commuting trips: 3-km, 15-min typical trips.

-High centrality of employment over residences in Chengdu.

-Trip duration and substitutability at home end are two major factors of online car-hailing usage.

-Public-housing residents live at outskirts, don’t differ in commuting features, while avoid online car-hailing usage – greater commuting burdens and fewer commuting options.

Flaws of this study & further discussion.

-Too few travel modes under fine inspection.

-Too few public-housing xiaoqus under fine inspection.

-A series of assumptions taken in the data mining process.

-The inner flaws of big-data-based research.

Icon & products of GAPU (Guitar Association Peking University)

Light & Shade: Daily Photography

Japan 2019