Predicting Travel Impacts of New Development in America's Major Cities

2015 ◽  
Vol 2500 (1) ◽  
pp. 36-47 ◽  
Author(s):  
Rachel Weinberger ◽  
Stephanie Dock ◽  
Liza Cohen ◽  
Jonathan D. Rogers ◽  
Jamie Henson
Keyword(s):  
Urban Areas ◽  
Department Of Transportation ◽  
Trip Generation ◽  
Urban Context ◽  
Data Set ◽  
New Development ◽  
Single Use ◽  
Widespread Belief ◽  
Urban Contexts ◽  
Travel Impact

There is a widespread belief that the available tools for predicting travel impacts of urban development are not as strong as they could be. The implications are that cities ( a) may be hindered in developing appropriate travel impact mitigations, ( b) lack good information to communicate to existing residents about potential travel impacts of proposed development, and ( c) with better tools would be able to make stronger policy on the basis of more reliable understanding of development impacts. The most frequently used tool for estimating travel impacts is the ITE informational report on vehicle trip generation. The ITE report contains information primarily on single-use suburban automobile-oriented environments. As travel characteristics are inherently different in urban areas, a wide body of research has sought to create additional data-driven tools to estimate multimodal trip impacts of developments on the basis of urban-context characteristics. This paper compares the estimated trip generation outputs of the ITE and other models to field counts and surveys conducted for the District Department of Transportation at 16 locations in Washington, D.C. The findings here support the widely held belief that existing tools are not well suited to trip generation estimation in urban contexts. The paper is part of a larger study effort that seeks to develop a robust data set of urban trip generation that will be a foundation in the creation of better models.

scholarly journals A New Fuzzy Rule-based Model to Partition a Complex Urban System in Homogeneous Urban Contexts

2018 ◽  
Author(s):  
Ferdinando Di Martino ◽  
Barbara Cardone
Keyword(s):  
Urban Areas ◽  
Census Data ◽  
Fuzzy Rule ◽  
Urban System ◽  
Urban Context ◽  
Domain Experts ◽  
Rule Set ◽  
Urban Contexts ◽  
Rule System ◽  
Area Of Study

We present a new unsupervised method aimed to obtain a partition of a complex urban system in homogenous urban areas, called urban contexts. The area of study is initially partitioned in microzones, homogeneous portion of the urban system, that are the atomic reference elements for the census data. With the contribution of domain experts, we identify the physical, morphological, environmental and socio-economic indicators need to identify synthetic characteristics of urban contexts and create the fuzzy rule set necessary to determine the type of urban context. We implement the set of spatial analysis processes necessary to calculate the indicators for microzone and apply a Mamdani fuzzy rule system to classify the microzones. Finally, the partition of the area of study in urban contexts is obtained by dissolving continuous microzones belonging to the same type of urban context. Tests are performed on the Municipality of Pozzuoli (Naples - Italy); the reliability of out model is measured by comparing the results with the ones obtained by detailed analysis.

scholarly journals Household Wealth: Low-Yielding and Poorly Structured?

2021 ◽  
Vol 14 (3) ◽  
pp. 99
Author(s):  
Marc Peter Radke ◽  
Manuel Rupprecht
Keyword(s):  
Household Wealth ◽  
Financial Advisors ◽  
Investment Fund ◽  
Data Set ◽  
Public And Private ◽  
Consistent Manner ◽  
Widespread Belief ◽  
International Comparative ◽  
Real Returns ◽  
Mean Variance

In this paper, we present a newly generated data set on real returns of households’ aggregated asset holdings, which adds additional and more sophisticated information to existing relevant datasets in the literature. To do this, we draw on various datasets from public and private sources and then transform and combine them in a consistent manner that allows for international comparative and intertemporal analyses. Based on this, we address two current debates on the development of household wealth in the euro area that have been triggered by the low-interest environment. The first debate refers to the development of real yields on household wealth from 2000 to 2018, whereas the second debate deals with the mean-variance efficiency of household portfolios. Contrary to widespread belief, we find that yields on total wealth, which were largely dominated by non-financial assets’ yields, were mostly positive, although they exhibit a declining trend. Moreover, on average, overall real yields were significantly lower after 2008. Referring to portfolio efficiency, we find that current portfolios seem to be comparatively close to mean-variance efficiency. If households were to optimize their portfolios despite limited room for improvement, holdings of equity and investment fund shares should be reduced, contradicting common recommendations of financial advisors.

scholarly journals Urban Ecological Restoration

2010 ◽  
Vol 5 (3) ◽  
pp. 227-230 ◽  
Author(s):  
Paul H. Gobster
Keyword(s):  
Ecological Restoration ◽  
Urban Areas ◽  
Indigenous Species ◽  
Reference Sites ◽  
Urban Context ◽  
Ecological Processes ◽  
Fixed Set ◽  
Natural Diversity ◽  
Urban Ecological Restoration

What does ecological restoration mean in an urban context? More than half of the world’s population now lives in cities, and in response to the dynamic patterns of urbanization, a growing number of ecologists, land managers, and volunteers are focusing their efforts in and around cities to restore remnants of natural diversity (Ingram 2008). Ecological restoration is still a quite youthful field, yet many scientists and practitioners hold a relatively fixed set of criteria for what defines a successful restoration project, irrespective of where sites are located. Among the criteria commonly stated, sites should be composed of indigenous species, have a structure and diversity characteristic of currently undisturbed or historically documented “reference” sites, and be maintained through ecological processes such as fire that ensure long-term sustainability with minimal human assistance (Ruiz-Jaén and Aide 2005; SER International 2004). Application of these criteria has led to many ecologically successful restorations, but some ecologists in the field have begun to question whether the same standards can be realistically applied to sites such as those within urban areas that have been radically altered by past human activity (e.g., Martínez and López-Barerra 2008) or are being influenced by novel conditions that result in unpredictable trajectories (Choi 2007). Perhaps more significantly, it is becoming increasingly recognized that the broader viability of restoration projects, especially those in urban areas, hinges on how socially successful they are in gaining public acceptance for restoration activities and practices, building constituencies to assist with implementation and maintenance, and addressing a broader set of sustainability goals that reach beyond the protection of native biodiversity (e.g., Choi et al. 2008; Hobbs 2007; Rosenzweig 2003).

Barriers and levers for implementing sustainable Nature-Based Solutions in cities

2021 ◽  
Author(s):  
Chloé Duffaut ◽  
Nathalie Frascaria-Lacoste ◽  
Pierre-Antoine Versini
Keyword(s):  
Urban Areas ◽  
Large Scale ◽  
Project Managers ◽  
Global Changes ◽  
Human Beings ◽  
Urban Context ◽  
Urban Plan ◽  
Education And Awareness ◽  
Awareness Raising ◽  
The City

<p>Hydro-meteorological risks are increasing and this could be due to global changes. These risks are particularly important in the urban context where most human beings live. Indeed, the impervious surfaces present in cities increase the risk of flooding, for example. Nature-Based Solutions can help to reduce these risks by creating permeable soils or storing water while promoting biodiversity. In this context, it is essential to understand what hinders the development and sustainability of these Nature-based Solutions in the city and what could help to deploy them on a large scale. For this purpose, various professionals working on Nature-Based Solutions in the city in France, were interviewed between 2020 and 2021, both in the academic and operational sectors, or even at the interface between the two: researchers in ecology or hydrology, IUCN (International Union for Conservation of Nature) project manager, project managers at the Regional Biodiversity Agency, director and natural environment manager of a watershed union, agro-economists engineer among others. They were asked what are the barriers and potential opportunities for Nature-Based Solutions implementation and sustainability in city. By analysing their answers, it emerges that the obstacles are more often cultural, political or financial than technical. The potential levers often mentioned are education and awareness-raising at all levels, especially for elected officials and the general public. Regulations such as the PLU (Local Urban Plan) and new funding for more natural spaces in the city also seem to be means of promoting Nature-based Solutions in urban areas. These interviews with diverse professionals directly involved in Nature-Based Solutions in cities allow to give real courses of action to be taken to democratize these Solutions throughout the French territory, or even internationally, and therefore ultimately reduce the risks of hydro-meteorology. This is one of the objectives of the French ANR project EVNATURB (Assessment of ecosystem performance of a renaturation of the urban environment), in which this study has been carried out.</p>

Reviving the consumption of insects in Japan: a promising case of hebo (Vespula spp., wasps) by high school club activities

2020 ◽  
Vol 6 (1) ◽  
pp. 45-50 ◽  
Author(s):  
K. Nonaka ◽  
H. Yanagihara
Keyword(s):  
High School ◽  
Resource Use ◽  
Environmental Sustainability ◽  
Urban Areas ◽  
Local Development ◽  
Participant Observation ◽  
Structured Interviews ◽  
New Development ◽  
School Research ◽  
Recent Initiative

For people who hunt and eat hebo (Vespula spp., wasps) it is more about culture than it is about food production or environmental sustainability in mountainous central Japan. Individuals who currently semi-cultivate hebo do not intend to industrialize hebo semi-cultivation. Semi-cultivation of hebo is a seasonal activity and it is a hobby for them. This paper focuses on the declining number of wasp hunters. The number declined because younger generations did not take up the hobby or moved to urban areas in search of jobs. Hebo hunters thus consisted of seniors only. The number further declined as those who reached old age were no longer able to practice hebo hunting. Very recently, initiated a promising new development at Ena Agricultural High School. The support to the Hebo Club initiative was quickly expanded and now covers the members belonging to the Japan Vespula Association, and academics involved in edible insect research. We present an overview of the efforts of hebo hunters to maintain and promote the use of Vespula spp. as food and we describe the Hebo Club, a promising recent initiative spearheaded by the students of Ena Agricultural High School. The information was collected between fiscal 2015 and 2017 (namely from September 2015 to March 2018) by participant observation and semi-structured interviews with hebo hunters collaborating with the Hebo Club activities. The Hebo Club uses a hands-on approach: students gain knowledge on edible wasps and their semi-cultivation by actively engaging in the semi-cultivation of the wasps. The club thus teaches the students about resource use by engaging in resource use. The students are taught by experienced wasp hunters how to find, collect, house, and raise hebo. The Hebo Club’s colonies are housed in a shed in the school research forest. By cooperating with the members belonging to various Hebo Associations of south-eastern Gifu and northern Aichi, the students experience the variation in employed techniques and equipment, and make observations of hebo biology and ecology in different environments. Other than the hebo season, the club practice develops their idea for local development and applying it to tourism according to the evaluation of their activities. The successful beginning of the Hebo Club, a well-organized cultural initiative spearheaded by youngsters who are backed by seniors, is indicative of how people caring about hebo culture in central mountainous Japan maintains and preserves its culture and identity.

scholarly journals A Differentiated Spatial Assessment of Urban Ecosystem Services Based on Land Use Data in Halle, Germany

Land ◽  
2018 ◽  
Vol 7 (3) ◽  
pp. 101 ◽  
Author(s):  
Janis Arnold ◽  
Janina Kleemann ◽  
Christine Fürst
Keyword(s):  
Land Use ◽  
Air Pollution ◽  
Ecosystem Services ◽  
Urban Areas ◽  
Urban Ecosystem ◽  
Data Set ◽  
Urban Ecosystem Services ◽  
Climate Regulation ◽  
Land Use Types ◽  
Cooling Effects

Urban ecosystem services (ES) contribute to the compensation of negative effects caused by cities by means of, for example, reducing air pollution and providing cooling effects during the summer time. In this study, an approach is described that combines the regional biotope and land use data set, hemeroby and the accessibility of open space in order to assess the provision of urban ES. Hemeroby expresses the degree of naturalness of land use types and, therefore, provides a differentiated assessment of urban ES. Assessment of the local capacity to provide urban ES was conducted with a spatially explicit modeling approach in the city of Halle (Saale) in Germany. The following urban ES were assessed: (a) global climate regulation, (b) local climate regulation, (c) air pollution control, (d) water cycle regulation, (e) food production, (f) nature experience and (g) leisure activities. We identified areas with high and low capacity of ES in the urban context. For instance, the central parts of Halle had very low or no capacity to provide ES due to highly compact building styles and soil sealing. In contrast, peri-urban areas had particularly high capacities. The potential provision of regulating services was spatially limited due to the location of land use types that provide these services.

scholarly journals CREATING MULTI-TEMPORAL MAPS OF URBAN ENVIRONMENTS FOR IMPROVED LOCALIZATION OF AUTONOMOUS VEHICLES

2020 ◽  
Vol XLIII-B2-2020 ◽  
pp. 317-323
Author(s):  
J. Schachtschneider ◽  
C. Brenner
Keyword(s):  
Urban Areas ◽  
Autonomous Vehicles ◽  
Weather Conditions ◽  
Point Clouds ◽  
Urban Environments ◽  
Seasonal Effects ◽  
Data Set ◽  
Multi Temporal ◽  
One Year

Abstract. The development of automated and autonomous vehicles requires highly accurate long-term maps of the environment. Urban areas contain a large number of dynamic objects which change over time. Since a permanent observation of the environment is impossible and there will always be a first time visit of an unknown or changed area, a map of an urban environment needs to model such dynamics.In this work, we use LiDAR point clouds from a large long term measurement campaign to investigate temporal changes. The data set was recorded along a 20 km route in Hannover, Germany with a Mobile Mapping System over a period of one year in bi-weekly measurements. The data set covers a variety of different urban objects and areas, weather conditions and seasons. Based on this data set, we show how scene and seasonal effects influence the measurement likelihood, and that multi-temporal maps lead to the best positioning results.

scholarly journals Energy Rehabilitation of Social Housing in Vulnerable Areas. Case study: a 1950s Building in a Medium-sized Mediterranean City

2019 ◽  
Vol 4 (1) ◽  
pp. 44
Author(s):  
Ruá María José ◽  
Huedo Patricia ◽  
Cabeza Manuel ◽  
Saez Beatriz ◽  
Civera Vicente
Keyword(s):  
Low Income ◽  
Social Housing ◽  
Urban Areas ◽  
Optimal Solution ◽  
Energy Performance ◽  
Urban Context ◽  
Building Stock ◽  
Performance Simulation ◽  
Urban Level

In the urban context, buildings play a key role as they are energy consumers. In well-established cities with a high percentage of aged building stock, the focus should lie on sensitive urban areas where the weakest population sectors and the worst physico-economic conditions are usually encountered. In this work, the energy refurbishment of social housing is proposed. A block of municipally owned buildings is selected as a case study to consider that public buildings play an exemplary role according to Directive 2012/27/EU. The group is formed by 12 buildings, which account for 120 dwellings.This study is grounded on two levels. First the urban level. The building is located in a prioritised urban Area of Rehabilitation, Renovation and Urban Regeneration (ARRU), according to the new local Land Plan. This area presents multidimensional vulnerability and considers urban, building, socio-demographic and socio-economic features. Second, the building presents very low energy performance. It was built in 1959 when a high demand of dwellings and the economic resources then available led to low-quality buildings that are far from meeting today’s standards.Some proposals are made, having in mind the specific features of the urban context. The energy refurbishment of the building is proposed, selecting the optimal solution, considering technical, environmental and economic criteria. The energy performance simulation shows a remarkable improvement of the energy performance, resulting in an improvement of the thermal comfort of the dwellers. Besides, a reduction in the energy consumption is reached, which would reduce the energy bills and, on the other hand, a reduction of the carbon emissions to the atmosphere, contributing to a better environment quality. Having in mind that the building is intended for social housing, energy poverty situations could be avoided, as dwellings are inhabited by low-income dwellers.

scholarly journals [a] Project for the Sub-Centre

2021 ◽  
Author(s):  
◽  
Grace Helen Salisbury Mills
Keyword(s):  
City Centre ◽  
Urban Structure ◽  
Urban Context ◽  
Specific Design ◽  
Architectural Form ◽  
Political Transformations ◽  
Cultural Transformations ◽  
Urban Contexts ◽  
A Site ◽  
The City

<p>In the aftermath of the 2011 earthquake, a state of polycentric urbanity was thrust upon New Zealand’s second largest city. As the city-centre lay in disrepair, smaller centres started to materialise elsewhere, out of necessity. Transforming former urban peripheries and within existing suburbs into a collective, dispersed alternative to the city centre, these sub-centres prompted a range of morphological, socio-cultural and political transformations, and begged multiple questions: how to imbue these new sub-centres with gravity? How to render them a genuine alternative to the CBD? How do they operate within the wider city? How to cope with the physical and cultural transformations of this shifting urbanscape and prevent them occurring ad lib? Indeed, the success and functioning of the larger urban structure hinges upon a critical, informed response to these sub-centre urban contexts. Yet, with an unrelenting focus on the CBD rebuild - effectively a polycentric denial - little such attention has been granted.  Taking this urban condition as its premise and its provocation, this thesis investigates architecture’s role in the emergent sub-centre. It asks: what can architecture do in these urban contexts; how can architecture act upon the emergent sub-centre in a critical, catalytic fashion? Identifying this volatile condition as both an opportunity for architectural experimentation and a need for critical architectural engagement, this thesis seeks to explore the sub-centre (as an idea and actual urban context) as architecture’s project: its raison d’etre, impetus and aspiration.  These inquiries are tested through design-led research: an initial design question provoking further, broader discursive research (and indeed, seeking broader implications). The first section is a site-specific, design for Sumner, Christchurch. Titled ‘An Agora Anew’; this project - both in conception and outcome - is a speculative response to a specific sub-centre condition. The second section ‘The Sub-centre as Architecture’s Project’ explores the ideas provoked by the design project within a discursive framework. Firstly it identifies the sub-centre as a context in desperate need of architectural attention (why architecture?); secondly, it negotiates a possible agenda for architecture in this context through terms of engagement that are formal, critical and opportunistic (how architecture?): enabling it to take a position on and in the sub-centre. Lastly, a critical exegesis positions the design in regards to the broader discursive debate: critiquing it an architectural project predicated upon the idea of the sub-centre.  The implications of this design-led thesis are twofold: firstly, for architecture’s role in the sub-centre (especially to Christchurch); secondly for the possibilities of architecture’s productive engagement with the city (largely through architectural form), more generally. In a century where radical, new urban contexts (of which the sub-centre is just one) are commonplace, this type of thinking – what can architecture do in the city? - is imperative.</p>

scholarly journals Boosting Rural Areas Revitalization in the Mediterranean through Cross-cutting Approach Based on Ecological and Social Resilience

2019 ◽  
Vol 2 (1) ◽  
pp. 43
Author(s):  
C. Echave ◽  
A. Palladus ◽  
M. Boy-Roura ◽  
M. Cacciutolo ◽  
S. Niavis ◽  
...  
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Green Economy ◽  
Added Value ◽  
Social Resilience ◽  
Sustainable Mobility ◽  
Use Of Resources ◽  
Wide Range ◽  
Urban Contexts ◽  
The Mediterranean

Urban areas have been identified as one of the key challenges to tackle in the next decades. Most of the environmental impacts associated to urban contexts are linked to an unsustainable use of resources basically due to urban planning and society’s consumption behaviour. Currently, the paradigm of sustainable cities brought out in the past years situates urban contexts as an opportunity to reduce these impacts. There is a wide range of strategies focused on cities and their transition to a more sustainable urban model: compactness, sustainable mobility, energy efficiency, waste management and greening are some of the most relevant approaches with clear indicators and implementation plans. However, rural areas are still pending for  a precise strategy that highlights their ecological added value avoiding to be defined only as “not urban”. Rural areas should be emphasized from their productivity perspective and their key role in terms of resilience and adaptation to Climate Change. In the framework of the Interreg Med Programme, Thematic Communities are working on the capitalisation of projects from different kind of approaches of application in the Mediterranean Area. Four of these communities - Renewable Energy, Green Growth, Sustainable Tourism and Efficient Buildings - have several projects that present rural areas as one common territory of intervention. The aim of this paper is to expose the standards and goals proposed by the Interreg Med Thematic Communities for Rural Areas Revitalization as a resilience strategy in the Mediterranean Region, using a cross-cutting approach. The cross-cutting approach stresses the relation among the environment, society and economy: rural liveability, increasing RES production with sharing microgrid systems & efficient buildings, as well as green economy based on sectors such as agricultural & tourism activities. These standards and results will provide reference values to shape final policies recommendations. Consequently, the present paper is based on the joint cross-thematic effort and work from four thematic communities of the Interreg MED programme, previously mentioned. It includes some references to existing research studies, but the aim is to open the path to identify new challenges of Mediterranean rural areas and find potential solutions from a holistic approach.

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