Opportunities for Transport Mode Change: An Exploration of a Disaggregated Approach

2002 ◽  
Vol 29 (3) ◽  
pp. 413-430 ◽  
Author(s):  
Martin Dijst ◽  
Tom de Jong ◽  
Jan Ritsema van Eck
Keyword(s):  
Spatial Configuration ◽  
Travel Behaviour ◽  
Methodological Framework ◽  
Transport Mode ◽  
New Town ◽  
Time Space ◽  
Different Types ◽  
Transport Modes ◽  
Action Spaces ◽  
Suburban Neighbourhood

Research into the effects of spatial configuration on the use of transport modes has to date dominantly been based on analyses of actual travel behaviour or prediction of future transport mode choices. However, in this research it is not made clear what choice opportunities were available for travel behaviour of the various population categories, given their desired activities and time–space opportunities. The authors describe a time–space theoretical and methodological framework based on the concept of action spaces, within which the choice opportunities of different types of households of various areas can be analysed. On the basis of a pilot study among the residents of a suburban neighbourhood in a Netherlands new town, the time–space opportunities they have to use alternative transport modes other than the car are brought into the frame. It is shown that residents have more time–space opportunities to make use of existing environmentally friendly, transport modes than had been expected. The possibilities differ between types of action spaces and types of households. Some implications for policymaking are discussed. The authors state that policymakers should be more sensitive to interpersonal differences in accessibility.

Virtual reality as a new tool for transport data collection

2021 ◽  
Vol 60 (4) ◽  
pp. 23-38
Author(s):  
Laura Agudelo-Vélez ◽  
Iván Sarmiento-Ordosgoitia ◽  
Jorge Córdoba-Maquilón
Keyword(s):  
Virtual Reality ◽  
Latin American ◽  
Latent Variable ◽  
Travel Behaviour ◽  
Urban Environments ◽  
Relevant Variable ◽  
Transport Mode ◽  
Transport Studies ◽  
Transport Modes ◽  
Mode Of Transport

Transport studies that adopt complex analyses present methodological challenges that lead to the use of innovative techniques to address the limitations of traditional methods. In the Latin American context, people consider security as a relevant variable in their daily lives. Thus, when people travel around the city and choose a mode of transport, secu-rity becomes an important factor and should therefore be included in transport studies. However, the definition of security in terms of transport in the Colombian context remains unclear. Therefore, we examined the security percep-tion effect on transport mode choice by addressing security as a latent variable consisting of three elements: environ-ment, subject and transport mode. We proposed the use of virtual reality (VR) to recreate travel routes and offer partic-ipants a scenario of choice closer to the natural conditions of a trip. The participants were provided routes in the form of immersive 3D videos recreating natural trip conditions to identify their choices and travel behaviour. Recordings were made of daily scenarios and existing urban environments portraying real and active modes of transport, giving respondents an almost-natural experience. The use of 360-degree immersive videos offers a multisensory experience allowing both the capture of socioeconomic and travel information and the collection of journey perception. The experiment evaluated two environments in Medellín, Colombia (secure (E1) and insecure (E2)) and studied the effects of lighting conditions (day (D) and night (N)). A total of four videos (E1D, E1N, E2D and E2N) depicting six transport modes in tandem were assessed by 92 participants from Medellín and Bogotá, Colombia. We found that environment-associated security perception varies depending on the time of the journey (day/night) and one’s familiarity with the environment. The research results position VR as a tool that offers high potential to support transport studies. We found that people’s movements, gestures and expressions while participating in the VR experiments resembled what was expected from journeys in reality. VR constitutes a relevant tool for transport studies, as it allows for an assessment of active transport mode perceptions. It prevents participants from being exposed to the risk associated with travel to specific places and carries out several routes in different transport modes even when participants cannot or have never undertaken journeys in the modes under assessment.

Patronage of urban commercial clusters: A network-based extension of the Huff model for balancing location and size

2017 ◽  
Vol 45 (3) ◽  
pp. 508-528 ◽  
Author(s):  
Andres Sevtsuk ◽  
Raul Kalvo
Keyword(s):  
Spatial Configuration ◽  
Analysis Tool ◽  
Spatial Networks ◽  
Urban Network ◽  
Household Level ◽  
New Town ◽  
New Towns ◽  
Public Facilities ◽  
User Access ◽  
Retail Demand

We introduce a version of the Huff retail expenditure model, where retail demand depends on households’ access to retail centers. Household-level survey data suggest that total retail visits in a system of retail centers depends on the relative location pattern of stores and customers. This dependence opens up an important question—could overall visits to retail centers be increased with a more efficient spatial configuration of centers in planned new towns? To answer this question, we implement the model as an Urban Network Analysis tool in Rhinoceros 3D, where facility patronage can be analyzed along spatial networks and apply it in the context of the Punggol New Town in Singapore. Using fixed household locations, we first test how estimated store visits are affected by the assumption of whether shoppers come from homes or visit shops en route to local public transit stations. We then explore how adjusting both the locations and sizes of commercial centers can maximize overall visits, using automated simulations to test a large number of scenarios. The results show that location and size adjustments to already planned retail centers in a town can yield a 10% increase in estimated store visits. The methodology and tools developed for this analysis can be extended to other context for planning and right-sizing retail developments and other public facilities so as to maximize both user access and facilities usage.

scholarly journals Achieving ‘Active’ 30 Minute Cities: How Feasible Is It to Reach Work within 30 Minutes Using Active Transport Modes?

2022 ◽  
Vol 11 (1) ◽  
pp. 58
Author(s):  
Alan Both ◽  
Lucy Gunn ◽  
Carl Higgs ◽  
Melanie Davern ◽  
Afshin Jafari ◽  
...  
Keyword(s):  
Climate Change ◽  
Population Growth ◽  
Active Transport ◽  
Public Transport ◽  
Traffic Congestion ◽  
Motor Vehicle ◽  
Spatial Relationship ◽  
Rapid Urbanization ◽  
Transport Mode ◽  
Transport Modes

Confronted with rapid urbanization, population growth, traffic congestion, and climate change, there is growing interest in creating cities that support active transport modes including walking, cycling, or public transport. The ‘30 minute city’, where employment is accessible within 30 min by active transport, is being pursued in some cities to reduce congestion and foster local living. This paper examines the spatial relationship between employment, the skills of residents, and transport opportunities, to answer three questions about Australia’s 21 largest cities: (1) What percentage of workers currently commute to their workplace within 30 min? (2) If workers were to shift to an active transport mode, what percent could reach their current workplace within 30 min? and (3) If it were possible to relocate workers closer to their employment or relocate employment closer to their home, what percentage could reach work within 30 min by each mode? Active transport usage in Australia is low, with public transport, walking, and cycling making up 16.8%, 2.8%, and 1.1% respectively of workers’ commutes. Cycling was found to have the most potential for achieving the 30 min city, with an estimated 29.5% of workers able to reach their current workplace were they to shift to cycling. This increased to 69.1% if workers were also willing and able to find a similar job closer to home, potentially reducing commuting by private motor vehicle from 79.3% to 30.9%.

scholarly journals Ritual orders and ritologiques: a terminological quest for some neglected fields of study

2003 ◽  
Vol 18 ◽  
pp. 221-242 ◽  
Author(s):  
Michael Stausberg
Keyword(s):  
Rites Of Passage ◽  
Strict Sense ◽  
Ritual Studies ◽  
Healing Rituals ◽  
Fields Of Study ◽  
Ritual Theory ◽  
Time Space ◽  
Or Groups ◽  
Different Types ◽  
Semi Empirical

The topic presented in this paper lies at the crossroads between ritual studies and ritual theory. In order to get an idea of the field of study, it may be useful to distinguish between the following general approaches to the study of ritual. To begin with, ritual theory in the strict sense, i.e. with explanatory ambitions etc., tends to focus on RITUAL as such: what IT is, what IT does, how IT works ("functions"), and why IT is as it is.Softer varieties of ritual theory, e.g. approaches that wish to foster a better "understanding" of what goes on when rituals are being performed, may focus on RITUALS in a semi-empirical and semi-theoretical fashion. As a matter of fact, to a large extent ritual "theory" seems to be the result of theoretical reflections on matters of empirical research. Apart from that, we find studies of this and that phenomenon (e.g. time, space, violence, aesthetics, media, etc.) in relation to rituals ("ritual  and time", "ritual and space", etc.). Then, of course, we have a good dose of studies on different "types", "classes", or "groups" of rituals. Most popular, (in the absence of any statistical evidence), are studies of "sacrifice", "rites of passage", and "initiations", with "healing rituals" and "pilgrimages" as ever more successful runner-ups. Correspondingly, there is a number of studies about any variety of any class of rituals among the so-and-so people ("initiation among the NN"). Moreover, there are plenty of books about the rituals of this and that religion or people — in colonial times often published under such titles as "The customs and ceremonies of the NN". Last but not least, there is an overwhelming amount of studies devoted to the presentation or analysis of single rituals.

scholarly journals LOGIC OF RELATIVITY

2021 ◽  
pp. 42-52
Author(s):  
Ihor Ohirko ◽  
Zinovii Partyko
Keyword(s):  
Modal Logic ◽  
Symbolic Logic ◽  
Logical Theory ◽  
Relative Truth ◽  
Time Space ◽  
Different Types ◽  
Logical Method ◽  
Standard Values ◽  
The Difference ◽  
Modal Values

The problem of the truth of statements is considered. This study had the goal to develop a logical theory that would allow considering the context (the paradigm) from which would depend on the truth of the statement. For the development of such a theory, called the logic of relativity, the following methods of research are used as abstraction, analysis (traditional), synthesis, deduction, formalisation, axiomatisation, logical method. In order to develop the logic of relativity, it is expedient to use the achievements in the area of situational logic. Under the situation, it is proposed to understand two circumstances (time and space) and a condition that creates a context (paradigm) statement. Specifies the modal values that these three parameters can acquire and examines different types of situations. In order to write statements in the logic of relativity, a form of the statement of statements is proposed in the language of extended symbolic logic. For the theory of the logic of relativity, a set of four axioms is proposed and a series of laws. In particular, it is indicated that the values of the assertions in the logic of relativity are the following five estimates: truth, relative truth, relative is absurd, unclear, uncertain. Some theorems of the logic of relativity are proposed. A number of examples of texts in the natural language are given to interpret the statements of the logic of relativity. It is indicated that the proposed apparatus of the logic of relativity should be regarded as a kind of modal logic. The difference in the logic of relativity from situational logic is that it considers the factor of movement (motion) of statements in time, space and environment conditions, which was not considered by situational logic. The logic of relativity should be used wherever it is necessary to take into account the possibility of moving allegations regarding time, space and environment of conditions. One of the most important conclusions of the study is that in the logic to the standard values of truth (true, probably true, false, uncertain), it is expedient to add another value: relatively true (and accordingly: relatively false).

Nature's Place in the Technological Transformation of Agriculture: Some Reflections on the Recombinant BST Controversy in the USA

1998 ◽  
Vol 30 (7) ◽  
pp. 1151-1163 ◽  
Author(s):  
F H Buttel
Keyword(s):  
Agricultural Policy ◽  
Dairy Products ◽  
Spatial Configuration ◽  
Agricultural Research ◽  
Social Institutions ◽  
Commodity Chain ◽  
Technological Transformation ◽  
Time Space ◽  
The Social ◽  
The Usa

In this paper I focus on the interactions between technological transformation of agrofood systems and the construction of discursive linkages between rurality and nature. I draw on Giddens's notion of time–space distanciation to show how the spatial configuration of modern agrofood systems creates possibilities but also imposes limits on discourses about agriculture and nature. Using some observations from the bovine somatotropin (BST) experience, I demonstrate that prospective technological transformations significantly influence the struggle for ‘control of the natural’ among the diversity of actors in the dairy-products commodity chain. Proponents and opponents of BST aimed to occupy the discursive high ground of ‘the natural’ in making their appeals to farmers, consumers, and policymakers. As it became clearer in the late 1980s that BST would not prove to be the revolutionary biotechnology product that proponents had originally claimed, both proponents and opponents significantly altered the substance of their discursive claims about what constitutes the natural. This suggests that vocabularies of nature are a flexible modality for contesting the course of social change in agrofood systems. Actors in the BST controversy not only contested the natural status of artifacts and practices such as the use of BST technology, they did so with respect to the social institutions of agricultural research and agricultural policy as well. Some legacies of the struggle for control of the natural in US dairying and in agrofood systems in general are discussed.

scholarly journals The Thermodynamic Relationship between the RN-AdS Black Holes and the RN Black Hole in Canonical Ensemble

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Yu-Bo Ma ◽  
Li-Chun Zhang ◽  
Jian Liu ◽  
Ren Zhao ◽  
Shuo Cao
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Flat Space ◽  
Space Time ◽  
Asymptotically Flat ◽  
Time Space ◽  
Ads Black Holes ◽  
Different Types ◽  
Thermodynamic Relationship ◽  
The Relationship

In this paper, by analyzing the thermodynamic properties of charged AdS black hole and asymptotically flat space-time charged black hole in the vicinity of the critical point, we establish the correspondence between the thermodynamic parameters of asymptotically flat space-time and nonasymptotically flat space-time, based on the equality of black hole horizon area in the two different types of space-time. The relationship between the cavity radius (which is introduced in the study of asymptotically flat space-time charged black holes) and the cosmological constant (which is introduced in the study of nonasymptotically flat space-time) is determined. The establishment of the correspondence between the thermodynamics parameters in two different types of space-time is beneficial to the mutual promotion of different time-space black hole research, which is helpful to understand the thermodynamics and quantum properties of black hole in space-time.

scholarly journals Simulation of the Daily Activity Plans of Travelers Using the Park-and-Ride System and Autonomous Vehicles: Work and Shopping Trip Purposes

2020 ◽  
Vol 10 (8) ◽  
pp. 2912 ◽  
Author(s):  
Jairo Ortega ◽  
Jamil Hamadneh ◽  
Domokos Esztergár-Kiss ◽  
János Tóth
Keyword(s):  
Travel Time ◽  
Travel Behavior ◽  
Autonomous Vehicles ◽  
Daily Activity ◽  
Transport Mode ◽  
Park And Ride ◽  
Activity Chain ◽  
Private Car ◽  
Transport Modes ◽  
The Impact

The preferences of travelers determines the utility of daily activity plans. Decision-makers can affect the preference of travelers when they force private car users to use park-and-ride (P&R) facilities as a way of decreasing traffic in city centers. The P&R system has been shown to be effective in reducing uninterrupted increases in traffic congestion, especially in city centers. Therefore, the impacts of P&R on travel behavior and the daily activity plans of both worker and shopper travelers were studied in this paper. Moreover, autonomous vehicles (AVs) are a promising technology for the coming decade. A simulation of the AV as part of a multimodal system, when the P&R system was integrated in the daily activity plans, was carried out to determine the required AV fleet size needed to fulfill a certain demand and to study the impacts of AVs on the behavior of travelers (trip time and distance). Specifically, a group of travelers, who use private cars as their transport mode, was studied, and certain modifications to their daily activity plans, including P&R facilities and changing their transport mode, were introduced. Using the MATSim open-source tool, four scenarios were simulated based on the mentioned modifications. The four scenarios included (1) a simulation of the existing transport modes of the travelers, (2) a simulation of their daily activity plans when their transport modes were changed to AVs, (3) a simulation of the travelers, when P&R facilities were included in their activity chain plans, and (4) a simulation of their daily activity plans, when both P&R and AVs were included in their activity chain plans. The result showed that using the P&R system increased overall travel time, compared with using a private car. The results also demonstrated that using AVs as a replacement for conventional cars reduced travel time. In conclusion, the impact of P&R and AVs on the travel behavior of certain travelers was evaluated in this paper.

scholarly journals Reporting Correct p Values in VEGAS Analyses

2017 ◽  
Vol 20 (3) ◽  
pp. 257-259 ◽  
Author(s):  
Julian Hecker ◽  
Anna Maaser ◽  
Dmitry Prokopenko ◽  
Heide Loehlein Fier ◽  
Christoph Lange
Keyword(s):  
Linkage Disequilibrium ◽  
False Positive ◽  
Real Data ◽  
Summary Statistics ◽  
Methodological Framework ◽  
Test Statistics ◽  
P Values ◽  
Different Types ◽  
Linkage Disequilibrium Information ◽  
User Friendly

VEGAS (versatile gene-based association study) is a popular methodological framework to perform gene-based tests based on summary statistics from single-variant analyses. The approach incorporates linkage disequilibrium information from reference panels to account for the correlation of test statistics. The gene-based test can utilize three different types of tests. In 2015, the improved framework VEGAS2, using more detailed reference panels, was published. Both versions provide user-friendly web- and offline-based tools for the analysis. However, the implementation of the popular top-percentage test is erroneous in both versions. The p values provided by VEGAS2 are deflated/anti-conservative. Based on real data examples, we demonstrate that this can increase substantially the rate of false-positive findings and can lead to inconsistencies between different test options. We also provide code that allows the user of VEGAS to compute correct p values.

Seoul's Deathscapes: Incorporating Tradition into Modern Time – Space

10.1068/a3455 ◽  
2001 ◽  
Vol 33 (8) ◽  
pp. 1489-1506 ◽  
Author(s):  
Elizabeth K Teather ◽  
Hae Un Rii ◽  
Eun Hye Kim
Keyword(s):  
Confucian Tradition ◽  
Cultural Significance ◽  
Small Space ◽  
Time Space ◽  
The Family ◽  
Space Saving ◽  
Different Types ◽  
Two Generations ◽  
Dramatic Shift ◽  
Dome Shape

Honouring the dead at their graveside at appropriate dates is required by Confucian tradition, and has always had significant time – space implications in Korea. Today, with the majority of Koreans now living in cities—a dramatic shift in the last two generations—many still travel to patrilineal ancestral villages to carry out the necessary annual rites in family graveyards established long ago. However, an official campaign to encourage cremation in Seoul was initiated in 1998. A small, space-saving family tomb has been designed to hold the ashes of up to twenty-four family members, and is being promoted at public cemeteries. Fieldwork was carried out into deathscapes in the vicinity of Seoul in late 1999. The paper describes small family graveyards, including one established generations ago and two that have been newly established. It also describes different types of columbaria, two of which employ the traditional dome shape of Korean graves. Discussion focuses on the persistent cultural significance of maintaining ties with patrilineal places of origin. We suggest that this is a valued Confucian dimension of Korean heritage; many are seeking manageable ways to incorporate this dimension in their predominantly urban time – space commitments. From family graveyard to columbarium, there is a progressive divorce from ancestral territory (the family graveyard in the patrilineal village) and from social context (lineage).

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