Giancarlos Parady

Giancarlos Parady
The University of Tokyo | Todai · Department of Urban Engineering

Ph.D.

About

37
Publications
6,201
Reads
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295
Citations
Additional affiliations
April 2020 - present
The University of Tokyo
Position
  • Lecturer
February 2019 - May 2019
ETH Zurich
Position
  • Lecturer
April 2015 - April 2020
The University of Tokyo
Position
  • Professor (Assistant)
Education
October 2011 - September 2014
The University of Tokyo
Field of study
  • Urban Engineering (Urban Planning)

Publications

Publications (37)
Article
Full-text available
This article analyzes factors affecting travel behavior changes at the individual level in light of the COVID-19 pandemic in Japan, in the context of non-binding self-restriction requests. In particular, this study focuses on the effects of risk perception and social influence. A panel web-survey was conducted targeting residents of the Kanto Regio...
Article
This study aimed at evaluating the co-benefit implications of alternative electricity generation scenarios in Japan, in a post-Fukushima context. Four scenarios were designed assuming different shares of energy sources in a 2030 timeframe. Applying a Life Cycle Assessment (LCA) methodology, scenarios were assessed in terms of cumulative Non-Renewab...
Article
Full-text available
An examination of model validation practices in the peer-reviewed transportation literature published between 2014 and 2018 reveals that 92% of studies reported goodness-of-fit statistics, and 64.6% reported some sort of policy-relevant inference analysis. However, only 18.1% reported validation performance measures, out of which 78% (14.2% of all...
Article
Social interaction patterns are relevant to explain (social) travel behavior. As such, the objective of this paper is to comparatively study the factors that influence social interaction frequency among social network members with different communication modes. Based on data from seven surveys on social networks, this analysis seeks to shed some li...
Article
Full-text available
Objective To quantitatively evaluate the effect of seawalls on tsunami evacuation departure. Methods A mixed-effect Cox proportional-hazards regression model was applied to evacuation behavioural data obtained from a probability survey of survivors of the 2011 Great East Japan Earthquake and Tsunami in Iwate and Miyagi prefectures. Findings Prese...
Presentation
Full-text available
Automated Vehicles (AVs) are expected to disrupt the transport sector in the mid- to long- term future, and extensive research efforts have been dedicated to studying its potential implications. However, the existing literature is still limited in the context of Japan. To fill this gap, an integrated travel forecasting approach that combines an act...
Preprint
Full-text available
Highlights • Transport-related implication of private autonomous vehicles in the context of Japan are discussed. • Activity-based travel demand model and dynamic traffic assignment model estimated, and policy simulations conducted. • Policy simulations indicate potential 1.5-2.1% increase in tours, 22.1-43.0% increase in travel distances, and 1.9-3...
Preprint
Full-text available
The impact of shared autonomous vehicles (SAV) on people’s lives, cities, and transportation has been actively discussed in recent years, as the technology is expected to become widespread in the future. Agent-based simulation analysis continues to develop as a method for exploring SAV operation methods and analyzing their impact. Due to high compu...
Presentation
Full-text available
This study evaluates the effectiveness of using Google Maps Location History data to identify joint activities in social networks. To do so, an experiment was conducted where participants were asked to execute daily schedules designed to simulate daily travel incorporating joint activities. Under the strictest accuracy criteria, Android activity de...
Presentation
Full-text available
The impact of shared autonomous vehicles (SAV) on people’s lives, cities, and transportation has been actively discussed in recent years, as the technology is expected to become widespread in the future. Agent-based simulation analysis continues to develop as a method for exploring SAV operation methods and analyzing their impact. Due to high compu...
Article
Full-text available
This article presents the results of a survey on egocentric social networks in the Greater Tokyo Area. This is, together with our preliminary study, the first study on egocentric social network in Japan that uses an unrestricted name generator to elicit personal networks. It is comparable to previous work conducted in Europe (Switzerland and The Ne...
Presentation
Full-text available
This presentation has a published article associated with it. Please refer to: Parady, G., Taniguchi, A., Takami, K. (2020) Travel behavior changes during the COVID-19 pandemic in Japan: Analyzing the effects of risk perception and social influence on going-out self-restriction. Transportation Research Interdisciplinary Perspectives (In press) Open...
Article
Full-text available
Background: Previous studies have reported that financial strain has deleterious effects on healthy behaviors. Moreover, social support is expected to mitigate these effects but few studies have investigated the effects of exercise; thus, the investigation can deepen our understanding of the relationship between social support and physical activity...
Data
Errata for the article: Troncoso Parady, G., Chikaraishi, M., Takami, K., Harata, N. (2014) A panel approach to understanding the effect of the built environment on travel behavior: A case study of the Kashiwanoha Area, Chiba, Japan . Urban and Regional Planning Review,1, pp.18-38
Poster
Full-text available
As face-to-face and ICT-mediated social interaction patterns are relevant to explain (social) travel behavior, the objective of this paper is to study comparatively the factors that influence social interaction frequency with different communication modes. The analysis is based on seven recent data collections on personal social networks, from Cana...
Preprint
This article has a published version associated with it. Please refer to: Parady, G., Taniguchi, A., Takami, K. (2020) Travel behavior changes during the COVID-19 pandemic in Japan: Analyzing the effects of risk perception and social influence on going-out self-restriction. Transportation Research Interdisciplinary Perspectives (In press) Open A...
Article
Full-text available
This article presents an exploratory analysis of personal networks and social interactions in the Greater Tokyo Area. A personal networks survey was conducted in Japan using an unrestricted name generator and a name interpreter. Social network characteristics in the sample were analyzed, focusing on network size, composition and spatial distributio...
Presentation
Full-text available
In this article we reviewed validation practices from the transportation field in the peer-reviewed literature of the past five years. We found that although 91% of studies reported goodness of fit statistics, and 66% reported some sort of policy-related inference analysis, the percentage of validation reporting stood at 17%. Stronger criteria are...
Article
Full-text available
The emergence of autonomous vehicles is expected to shape the urban transportation system in various ways. In this study, a large-scale agent-based disaggregate simulation model, MATSim, is employed to measure the impact of autonomous vehicles on accessibility changes. This study used disaggregate spatial data from the Gunma Prefecture Person Trip...
Article
Full-text available
This article analyses the connection between social networks, social interactions and out-of-home leisure activity generation in the context of Japanese society. A multilevel structural equation modelling approach is used to account for the hierarchical structure of the data. At the ego-alter (self-other) level, results suggest the existence of a c...
Preprint
This article presents an exploratory analysis of personal networks and social interactions in the Greater Tokyo Area. Using data from a personal networks survey conducted in Japan using an unrestricted name generator and a name interpreter, some hypotheses are put forth regarding the nature of social networks and social interactions in the Greater...
Article
Full-text available
In recent years sharing economy, a system in which participants interact in a direct and cooperative manner to consume goods and services has spread widely. In the transportation field ridesharing in which more than one person share a vehicle to make a trip is also spreading in various forms. Ridesharing is an effective use of resources, and it can...
Article
In old age, outdoor activities are positively related to physical health and well-being. However, the decline of physical functioning makes it difficult to go outside. In this study, to capture the mitigation effects of car usage on this decline of going outside behaviors, the relationship among car availability, physical functioning, and going-out...
Article
Full-text available
This study reviewed important factors associated with joint activities and found that the only previous study that analyzed the characteristics of joint activities was based on the American Time Use Survey. Consequently, this study analyzed the characteristics of joint activities using disaggregate anonymized data from the 2001 and 2006 Surveys on...
Technical Report
Full-text available
Final report of the IBS fellowship grant on the complete streets movement in USA: State of affairs and issues (In Japanese)
Conference Paper
Full-text available
Using data from the Japanese 5th nationwide person trip survey, a joint model of trip frequencies by mode (car, transit and non-motorized) is estimated using a generalized heterogeneous data model to account for inter-dependencies stemming from unobserved factors. The estimated model successfully captures the effect of common unobserved factors on...
Conference Paper
Using data from a survey of survivors of the 2011 Great East Japan Earthquake and Tsunami, this article evaluates quantitatively the effect of seawalls on evacuation departure time. A mixed effect Cox proportional hazard model is estimated, using time dependent covariates to account for the changing nature of tsunami risk. Findings suggest that on...
Article
Full-text available
This paper proposes the concept of "Metro-MaaS", an integrated mobility service for megacities, and evaluates its demand using data from an original web survey. "Metro-MaaS" can be provided by integrating existing services, but it can also be a concept to integrate fully autonomous demand-responsive-transit services and existing public transportati...
Article
Full-text available
This article discusses the validation and implementation of a propensity score approach with continuous treatment to test the existence of a causal relationship between the built environment and travel behavior using cross-sectional data. The implemented methodology differs from previous applications in the planning literature in that it relaxes th...
Article
Integrated Mobility Services (IMS) provide route search, booking, and payment services of different travel modes such as train, bus, taxi, Demand Responsive Transport (DRT), and car-sharing in one application and under one pricing system. Pioneer among IMS, Mobility as a Service (MaaS) was launched in Finland in 2016, and is expected to be expanded...
Article
Full-text available
This article analyzes the tsunami evacuation destination choice process, using as a case study the Great East Japan Earthquake of 2011. The contribution of this article is twofold. First, it sheds some light on the choice mechanism behind tsunami evacuation destination choice, an understudied aspect of the evacuation process. Second, and from a the...
Article
Full-text available
This study uses data from the 4th Nationwide Person Trip Survey to analyse the relation between the built environment, modal access preference at residential location and travel behaviour in Japan. By estimating random parameter count models, significant statistical associations were found between the built environment and preferences with non-work...
Article
Full-text available
In recent years, the compact city concept has become a paradigm of sustainable urban development under the premise that mixed use, high density cities can significantly reduce automobile dependency and promote the use of alternative modes. This claim however hinges on the existence of a true causal mechanism between the built environment and travel...
Article
Full-text available
In recent years, the concept of compact cities has permeated the sustainability discourse under the premise that compact high density developments can effectively reduce car use levels and promote use of alternative modes such as transit and non-motorized means. However, these arguments hinge on the existence of a true causal mechanism between buil...

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Projects

Project (1)
Project
Development of a travel behavior model using multi-source social networks data.