scholarly journals The value of additional data for public transport origin–destination matrix estimation

2021 ◽  
Author(s):  
Abderrahman Ait-Ali ◽  
Jonas Eliasson
Keyword(s):  
Public Transport ◽  
Additional Data ◽  
Entry And Exit ◽  
Matrix Estimation ◽  
Marginal Value ◽  
Trip Distance ◽  
Additional Data Collection ◽  
Important Input ◽  
Estimation Precision

AbstractPassenger origin–destination data is an important input for public transport planning. In recent years, new data sources have become increasingly common through the use of the automatic collection of entry counts, exit counts and link flows. However, collecting such data can be sometimes costly. The value of additional data collection hence has to be weighed against its costs. We study the value of additional data for estimating time-dependent origin–destination matrices, using a case study from the London Piccadilly underground line. Our focus is on how the precision of the estimated matrix increases when additional data on link flow, destination count and/or average travel distance is added, starting from origin counts only. We concentrate on the precision of the most policy-relevant estimation outputs, namely, link flows and station exit flows. Our results suggest that link flows are harder to estimate than exit flows, and only using entry and exit data is far from enough to estimate link flows with any precision. Information about the average trip distance adds greatly to the estimation precision. The marginal value of additional destination counts decreases only slowly, so a relatively large number of exit station measurement points seem warranted. Link flow data for a subset of links hardly add to the precision, especially if other data have already been added.

scholarly journals Demand Responsive Transport Service of ‘Dead-End Villages’ in Interurban Traffic

2020 ◽  
Vol 12 (9) ◽  
pp. 3820
Author(s):  
András Lakatos ◽  
János Tóth ◽  
Péter Mándoki
Keyword(s):  
Public Transport ◽  
Rural Areas ◽  
Public Institutions ◽  
Transport Service ◽  
Performance Requirement ◽  
Dead End ◽  
Trip Distance ◽  
The Mathematical Model ◽  
Public Transport Service

Providing a sustainable public transport service for areas with several small villages or hamlets is a challenge for the whole of Europe. To serve ‘dead-end villages’, vehicles must make a to-and-fro detour to each village, which requires considerable performance from the operator, and the service must also be ordered from the responsible bodies. The number of inhabitants in rural areas is constantly decreasing, and the remaining residents are aging. This process is due to the fact that economically active people in the country tend to move into towns offering jobs and public institutions instead of commuting to work. The performance requirement of serving low transport demand areas like ‘dead-end villages’ is high, while the number of passengers is very low. Furthermore, passengers are economically less active, and thus their transport must largely be subsidized. The present study hypothesizes that replacing traditional public transport with demand responsive transport (DRT) can make the service of rural areas with less public transport service and low demand sustainable. To prove this hypothesis, a generally applicable, innovative method of analysis based on performance–allocation is introduced, and the application of this method is illustrated by a case study conducted in northeastern Hungary. The number of ‘dead-end villages’ is high in the surveyed area; consequently, the results are impressive. The mathematical model applied here uses several parameters (e.g., population, traffic surveys, trip distance, operational costs), thus the analysis is highly complex.

scholarly journals Taking Responsibility for Industrial Digitalization: Navigating Organizational Challenges

2022 ◽  
Vol 14 (2) ◽  
pp. 866
Author(s):  
Linnéa Carlsson ◽  
Anna Karin Olsson ◽  
Kristina Eriksson
Keyword(s):  
Industry 4.0 ◽  
Additional Data ◽  
Qualitative Case Study ◽  
Organizational Challenges ◽  
Manufacturing Organizations ◽  
Additional Data Collection ◽  
Depth Interviews ◽  
Analyze Data ◽  
Taking Responsibility

In this article, an employee perspective has been applied in aiming to explore how organizations face challenges and take responsibility for industrial digitalization, thus extending the research on the human-centric perspective in relation to Industry 4.0 technologies. To give emphasis to the human-centric perspective, the co-workership wheel was applied to identify and analyze data. The findings of an explorative longitudinal qualitative case study consisting of 35 in-depth interviews with informants from a manufacturing company were used. Additional data collection consisted of documents and project meetings. By applying a human-centric perspective, llessons learned from this case study show that taking responsibility for industrial digitalization is challenging and the importance of an adaptive organizational culture and a focus on learning and competence are crucial. We argue that the findings give useful implications for manufacturing organizations navigating the challenges of industrial digitalization to sense and seize the benefits of Industry 4.0 technologies.

Moving on the Chain: Push-Pull Factors Affecting the Migration of Laotian Workers to Udon Thani, Thailand

2018 ◽  
Vol 5 (2) ◽  
pp. 99-105
Author(s):  
Thanapauge Chamaratana ◽  
Thawatchai Sangseema
Keyword(s):  
Social Network ◽  
Additional Data ◽  
Analysis Method ◽  
Pull Factors ◽  
Factors Affecting ◽  
Content Analysis Method ◽  
Depth Interview ◽  
Additional Data Collection ◽  
Study Unit ◽  
Participatory Observation

Abstract The tendency of migration of Lao workers to Thailand is likely to increase especially migration pattern is social network. The objective of this research was to study factors effecting the migration through social network of Lao workers in Udon Thani. Qualitative research method was applied in the study. Unit of analysis was group level. In-depth interview guideline was applied to collect data from 15 Laotian workers. The research site was Udon Thani, Thailand. Participatory observation and non-participatory observation were use for additional data collection. The ATLAS.ti programme was applied to categorize data, and data analysis was based on the content analysis method. The research results showed that the crucial push factors which contributed migration among Laotian workers included Udon Thani Unemployment in residency, and low revenue in residency and important pull factors include higher compensation, worker demand of establishments in Udon Thani province, Laotian employers' values in Udon Thani, and social network of Laotian workers in destination.

scholarly journals Case Study on Fire Resistance of Sandwiches for Means of Transport

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 207
Author(s):  
Pavel Koštial ◽  
Zora Koštialová Jančíková ◽  
Robert Frischer
Keyword(s):  
Fire Resistance ◽  
Fire Protection ◽  
Public Transport ◽  
Hybrid Vehicles ◽  
Safety Requirements ◽  
Different Types ◽  
Aluminum Honeycomb ◽  
Heat Loads

These days there are undeniably unique materials that, however, must also meet demanding safety requirements. In the case of vehicles, these are undoubtedly excellent fire protection characteristics. The aim of the work is to experimentally verify the proposed material compositions for long-term heat loads and the effect of thickness, the number of laminating layers (prepregs) as well as structures with different types of cores (primarily honeycomb made of Nomex paper type T722 of different densities, aluminum honeycomb and PET foam) and composite coating based on a glass-reinforced phenolic matrix. The selected materials are suitable candidates for intelligent sandwich structures, usable especially for interior cladding applications in the industry for the production of means of public transport (e.g., train units, trams, buses, hybrid vehicles).

scholarly journals Moral economy, solidarity and labour process struggle in Irish public transport

2019 ◽  
pp. 0143831X1989123
Author(s):  
Emma Hughes ◽  
Tony Dobbins ◽  
Doris Merkl-Davies
Keyword(s):  
Conceptual Framework ◽  
Trade Union ◽  
Public Transport ◽  
Qualitative Data ◽  
Moral Economy ◽  
Process Theory ◽  
Transport Sector ◽  
Competitive Tendering ◽  
Labour Process

This article empirically applies Knut Laaser’s integrated conceptual framework, combining Sayer’s moral economy (ME) theory with labour process theory (LPT), to examine how two rival Irish unions engaged with an uneven moral economy and consciously sought to build collective worker solidarity during a dispute over competitive tendering and marketization. Using qualitative data from a case study of BusCo in Ireland’s public transport sector, the article enriches sociological understanding of trade union solidarity, and how it is engendered, contested and experienced.

Sign in / Sign up

Export Citation Format

Share Document