scholarly journals Performance Evaluation of Stochastic Systems with Dedicated Delivery Bays and General On-Street Parking

2021 ◽  
Author(s):  
Abhishek ◽  
Benjamin Legros ◽  
Jan C. Fransoo
Keyword(s):  
Stochastic Systems ◽  
Passenger Cars ◽  
The Public ◽  
Passenger Vehicles ◽  
Limited Length ◽  
Arrival Processes ◽  
Urban Parking ◽  
Shed Light ◽  
Monotonicity Results ◽  
Freight Vehicles

As freight deliveries in cities increase due to retail fragmentation and e-commerce, parking is becoming a more and more relevant part of transportation. In fact, many freight vehicles in cities spend more time parked than they are moving. Moreover, part of the public parking space is shared with passenger vehicles, especially cars. Both arrival processes and parking and delivery processes are stochastic in nature. In order to develop a framework for analysis, we propose a queueing model for an urban parking system consisting of delivery bays and general on-street parking spaces. Freight vehicles may park both in the dedicated bays and in general on-street parking, whereas passenger vehicles only make use of general on-street parking. Our model allows us to create parsimonious insights into the behavior of a delivery bay parking stretch as part of a limited length of curbside. We are able to find explicit expressions for the relevant performance measures, and formally prove a number of monotonicity results. We further conduct a series of numerical experiments to show more intricate properties that cannot be shown analytically. The model helps us shed light onto the effects of allocating scarce urban curb space to dedicated unloading bays at the expense of general on-street parking. In particular, we show that allocating more space to dedicated delivery bays can also make passenger cars better off.

Re-municipalization of local public services: incidence, causes and prospects

2021 ◽  
pp. 002085232110064
Author(s):  
Daniel Albalate ◽  
Germà Bel ◽  
Raymond Gradus ◽  
Eoin Reeves
Keyword(s):  
Public Management ◽  
Public Services ◽  
Turn Of The Century ◽  
The Public ◽  
Local Public Services ◽  
High Profile ◽  
Global Trend ◽  
The Us ◽  
House Production ◽  
Shed Light

Since the turn of the century, a global trend of re-municipalization has emerged, with cities reversing earlier privatizations and returning infrastructure and public service delivery to the public sector. The reversal of privatization measures is not an entirely new phenomenon. In the US, for example, returning public services to in-house production has been a long-standing feature of ‘pragmatic public management’. However, many cases of re-municipalization that have occurred since the early 2000s represent a distinctive shift from earlier privatization policies. High-profile cases in cities including Paris and Hamburg have thrust re-municipalization into the limelight as they have followed public campaigns motivated by dissatisfaction with the results of privatization and a desire to restore public control of vital services, such as water and energy. Just as the reform of public services towards privatization spawned a vast body of scholarship, the current re-municipalization phenomenon is increasingly attracting the attention of scholars from a number of disciplinary perspectives. The articles contained in this symposium contribute to this emerging literature. They address some of the burning issues relating to re-municipalization, but they also point to issues yet to be resolved and shed light on a research agenda that is still taking shape.

scholarly journals Drink, but don't drive? The alcohol industry’s involvement in global road safety

2020 ◽  
Author(s):  
Connie Hoe ◽  
Niloufer Taber ◽  
Sarah Champagne ◽  
Abdulgafoor M Bachani
Keyword(s):  
Public Health ◽  
Road Safety ◽  
Road Traffic ◽  
Expert Interviews ◽  
Mixed Methods Approach ◽  
The Public ◽  
Alcohol Industry ◽  
Alcohol Control ◽  
Mapping Review ◽  
Shed Light

Abstract Drink-driving is a major cause of global road traffic fatalities, yet few countries have laws that meet international best practices. One possible reason is the alcohol industry’s opposition to meaningful policies that are perceived to directly threaten sales. Our primary objectives are to document alcohol industry involvement in global road safety policies and programmes and to critically evaluate the responses of public health and road safety communities to this involvement. Under the guidance of the Policy Dystopia Model, we used a mixed methods approach in which data were gathered from expert interviews and a mapping review of 11 databases, 5 watchdog websites and 7 alcohol industry-sponsored initiatives. Triangulation was used to identify points of convergence among data sources. A total of 20 expert interviews and 94 documents were analysed. Our study showed that the alcohol industry acknowledges that drink-driving is an issue but argues for solutions that would limit impact on sales, akin to the message ‘drink—but do not drive’. Industry actors have been involved in road safety through: (1) coalition coupling and decoupling, (2) information production and management, (3) direct involvement in policymaking and (4) implementation of interventions. Our study also shed light on the lack of cohesion within and among the public health and road safety communities, particularly with regard to the topics of receiving funding from and partnering with the alcohol industry. These results were subsequently used to adapt the Policy Dystopia Model as a conceptual framework that illustrates the ways in which the alcohol industry has been involved in global road safety. Several implications can be drawn from this study, including the urgent need to increase awareness about the involvement of the alcohol industry in road safety and to build a cohesive transnational alcohol control advocacy alliance to curb injuries and deaths related to drink-driving.

Eritrean Asylum Seekers’ Lament Ceremonies in Israel as Contested Sites of Identity Formation

2015 ◽  
Vol 8 (2) ◽  
pp. 147-173 ◽  
Author(s):  
Galia Sabar ◽  
Adam Rotbard
Keyword(s):  
Identity Formation ◽  
Asylum Seekers ◽  
Legal Status ◽  
Multiple Identities ◽  
Public Parks ◽  
Transnational Identities ◽  
The Public ◽  
Religious Rituals ◽  
The Public Sphere ◽  
Shed Light

Based on extensive qualitative research, this paper focuses on lament ceremonies Eritrean asylum seekers in Israel performed in public parks in 2008–2014.1 Specifically, we expose social and political structures of this diaspora, including mechanisms of survival in a context of harsh living conditions, a fragile legal status and a hostile environment. Following Werbner’s analysis of diasporas as chaordic entities, having no single representation and fostering multiple identities, we show how chaordicness underlies this diaspora’s ability to survive and thrive in Israel, and to embrace the unique Eritrean trans-local nationalism. We highlight how these public religious rituals were transformed into contested sites of identity formation following Israeli struggles against them. Finally, we shed light on the role that such ceremonies play in shaping transnational identities, as well as how disenfranchised communities of asylum seekers aim for visibility and recognition in the public sphere.

Use of Archard’s Wear Law for the Calculation of Uniform Wheel Wear of High Tonnage Freight Vehicles

2013 ◽  
Author(s):  
Carlos Casanueva ◽  
Per-Anders Jönsson ◽  
Sebastian Stichel
Keyword(s):  
Contact Point ◽  
Wheel Wear ◽  
Contact Conditions ◽  
Passenger Vehicles ◽  
Calculation Methodology ◽  
Wear Calculation ◽  
Wheel Profile ◽  
Wear Law ◽  
Equivalent Conicity ◽  
Freight Vehicles

Wheel profile evolution has a large influence on track and wheelset related maintenance costs. It influences important parameters such as equivalent conicity or contact point positioning, which will affect the dynamic behavior of the vehicle, in both tangent track and curve negotiation. High axle loads in freight wagons may increase both the wheel wear and the damage caused by vehicles with both new and already worn profiles. A common profile in Europe is the S1002 profile, developed for rail inclination 1/40. In Sweden rail inclination is 1/30, so contact conditions might not be optimal. The presented work uses Archard’s wear law to analyze the profile wear evolution in a two axle freight vehicle with Unitruck running gear on the Swedish network. This wear calculation methodology has been successfully used to predict uniform wear in passenger vehicles. First, the vehicle model has been optimized in order to improve the speed of the wear simulations. Experimental measurements of wheel profiles have been performed in order to validate the simulations. The conclusion is that the wear methodology successfully used to predict uniform wheel wear in passenger vehicles cannot be directly applied for the calculation of wheel profile evolution in high tonnage freight vehicles. The influence of block brakes or switches and crossings cannot be dismissed when calculating uniform wheel wear in these cases.

On the dependence structure and bounds of correlated parallel queues and their applications to synchronized stochastic systems

2000 ◽  
Vol 37 (04) ◽  
pp. 1020-1043 ◽  
Author(s):  
Haijun Li ◽  
Susan H. Xu
Keyword(s):  
Stochastic Systems ◽  
Queueing Systems ◽  
Performance Measure ◽  
Upper And Lower Bounds ◽  
Dependence Structure ◽  
Single Server ◽  
Joint Performance ◽  
Comparison Results ◽  
Arrival Processes ◽  
A Performance

This paper studies the dependence structure and bounds of several basic prototypical parallel queueing systems with correlated arrival processes to different queues. The marked feature of our systems is that each queue viewed alone is a standard single-server queuing system extensively studied in the literature, but those queues are statistically dependent due to correlated arrival streams. The major difficulty in analysing those systems is that the presence of correlation makes the explicit computation of a joint performance measure either intractable or computationally intensive. In addition, it is not well understood how and in what sense arrival correlation will improve or deteriorate a system performance measure. The objective of this paper is to provide a better understanding of the dependence structure of correlated queueing systems and to derive computable bounds for the statistics of a joint performance measure. In this paper, we obtain conditions on arrival processes under which a performance measure in two systems can be compared, in the sense of orthant and supermodular orders, among different queues and over different arrival times. Such strong comparison results enable us to study both spatial dependence (dependence among different queues) and temporal dependence (dependence over different time instances) for a joint performance measure. Further, we derive a variety of upper and lower bounds for the statistics of a stationary joint performance measure. Finally, we apply our results to synchronized queueing systems, using the ideas combined from the theory of orthant and supermodular dependence orders and majorization with respect to weighted trees (Xu and Li (2000)). Our results reveal how a performance measure can be affected, favourably or adversely, by different types of dependencies.

scholarly journals Nineteenth Century Public And Private Spheres

2014 ◽  
Vol 13 (1) ◽  
pp. 106-117
Author(s):  
REMINA SIMA
Keyword(s):  
Nineteenth Century ◽  
Everyday Life ◽  
Kate Chopin ◽  
Daily Activities ◽  
Charlotte Perkins Gilman ◽  
Historical Period ◽  
Public And Private ◽  
The Public ◽  
The Everyday ◽  
Shed Light

Abstract The aim of this paper is to illustrate the public and private spheres. The former represents the area in which each of us carries out their daily activities, while the latter is mirrored by the home. Kate Chopin and Charlotte Perkins Gilman are two salient nineteenth-century writers who shape the everyday life of the historical period they lived in, within their literary works that shed light on the areas under discussion.

scholarly journals O interesse público na sociedade de economia mista brasileira: aproximação com a benefit corporation do direito norte-americano

2020 ◽  
Vol 279 (1) ◽  
pp. 79
Author(s):  
Mario Engler Pinto Junior
Keyword(s):  
Corporate Governance ◽  
Public Interest ◽  
Institutional Design ◽  
Profit Maximization ◽  
Business Decisions ◽  
The Public ◽  
Benefit Corporation ◽  
The Us ◽  
Benefit Corporations ◽  
Shed Light

<p><span>The public interest of Brazilian mixed-capital company: approach to US benefit corporations</span></p><p><span><br /></span></p><p><span>RESUMO<br />O artigo faz um paralelo entre a figura da benefit corporation do direito norte-americano e a sociedade de economia mista brasileira, com o propósito de apontar semelhanças entre as duas estruturas societárias e lançar luzes sobre a racionalidade das soluções de governança adotadas em cada caso. A reflexão resgata inicialmente o conceito de interesse da companhia, destacando sua relevância como referencial jurídico para se aferir a legitimidade das decisões empresariais. Observa-se ainda que o entendimento sobre o tema varia conforme a abordagem teórica adotada, podendo se resumir na maximização dos lucros para partilha entre os sócios, ou combinar o atendimento a outros interesses não financeiros. Por sua vez, os desafios e soluções em matéria de governança corporativa também variam em função da amplitude do escopo atribuído à companhia. A benefit corporation procura combinar a consecução de algum objetivo de interesse público com a manutenção da finalidade lucrativa. A existência do escopo mais amplo permite questionar a adequação do desenho institucional para lidar com os conflitos inerentes ao novo tipo societário. Além disso, propicia uma análise comparativa com o modelo de sociedade de economia mista no direito brasileiro, que também está imbuída de uma missão pública, cuja consecução não afasta a necessidade de remunerar adequadamente o investimento acionário. Conclui-se que algumas medidas contidas na Lei nº 13.303/2016, para fortalecer o controle e gestão das empresas estatais brasileiras, guardam simetria com o tratamento aplicável às benefit corporation no direito norte-americano.</span></p><p><span><br /></span></p><p><span>ABSTRACT<br />The paper compares benefit corporations in the US with mixed-capital corporations in Brazil, in order to point the similarities and differences between both corporate structures. The paper also intends to shed light on the rationale of the governance solutions adopted in each case. The paper restates the concept of company’s interest and highlights it as a key legal reference for assessing the legitimacy of business decisions. Different readings of this concept are likely to translate into markedly different positions, from holding that the idea of interest refers solely to the purpose of profit maximization on behalf of shareholders to affirming the need to simultaneously accomplishing non-financial goals interests. The challenges and solutions concerning corporate governance also vary according to the extent of the corporation’s scope. Benefit corporations in the US seek to </span><span>simultaneously attain some goal of public interest and make profit for </span><span>its shareholders. The existence of a broader scope allows questioning </span><span>the suitability of their institutional design to deal with conflicts that are </span><span>inherent to this new corporate type. Their structure invites a comparison </span><span>to State owned enterprise (SOE) in Brazil. According to Brazilian Law, a </span><span>company controlled by the State is invested with a public mission while </span><span>needing to assure proper return to shareholders’ investment. The paper </span><span>concludes that some measures adopted by Brazilian Law No. 13.303/2016, </span><span>for strengthening the corporate governance of Brazilian SOE’s are similar </span><span>the U.S. Model Benefit Corporation Legislation (MBCL) concerning benefit </span><span>corporations.</span></p>

scholarly journals Kontanthjælpsmodtagerens kritiske register

2015 ◽  
pp. 63-77
Author(s):  
Mathias Herup Nielsen
Keyword(s):  
Political Protest ◽  
Policy Reforms ◽  
Joint Work ◽  
The Public ◽  
Political Protests ◽  
The Individual ◽  
The Unemployed ◽  
Depth Interviews ◽  
Domestic Form ◽  
Shed Light

This article investigates different acts of political protests currently floating from unemployed citizens who are being affected by recent retrenchment policy reforms. Whereas most of the existing literature tends to portray political protest as either collective and public or individual and private, this article attempts instead to shed light on the plurality of normative resources activated by the unemployed in a highly critical situation. Thereby the analysis moves between the collective and the individual as well as between the public and the private. Using the theoretical framework developed by Laurent Thévenot and Luc Boltanski in their joint work on justification, the article analyses a specific case, namely unemployed Danish recipients of social assistance who are affected by a new policy initiative meaning that their income has been lowered. Drawing on newspaper articles and qualitative in-depth interviews with affected citizens, the analysis unfolds and theorizes upon three very different forms of protesting: a civic, an industrial and a domestic form of resistance.

scholarly journals At gøre det rigtige alt for godt – ressourcestærke forældre og undervægt

2013 ◽  
Vol 24 (4) ◽  
pp. 37-63
Author(s):  
Annette Quinto Romani
Keyword(s):  
Higher Education ◽  
Social Inequality ◽  
Key Words ◽  
Health Knowledge ◽  
Sociological Perspective ◽  
The Public ◽  
8Th Grade ◽  
Perceived Weight ◽  
The Right ◽  
Shed Light

Overvægt spiller en stor rolle i den offentlige debat, mens undervægt til dels er et overset problem. Formålet med denne artikel er at belyse undervægt ud fra et sociologisk perspektiv med fokus på individ- og strukturperspektivet. Til at belyse denne problemstilling anvendes data fra Projekt 3A, som omfatter 1.092 skoleelever i Aalborg Kommune. Undersøgelsen blev foretaget i 2008-2011 med dataindsamling i 2008, da eleverne gik i 6. klasse samt i 2010, da eleverne gik i 8. klasse. Resultaterne viste, at piger med højt uddannede mødre havde en større sandsynlighed for at blive undervægtige end piger af lavt uddannede mødre. Endvidere fremgik det, at sandsynligheden for undervægt steg på de skoler, hvor eleverne blev udsat for en intervention, som øger viden om egen sundhed og til dels en intervention, som er rettet mod adfærdsændringer. Det fremgik desuden også, at interventionen, som øger viden om egen sundhed, øgede den sociale ulighed i vægt. ENGELSK ABSTRACT: Annette Quinto Romani: Overdoing the Right Thing – Advantaged Parents and Underweight Overweight is an important topic in the public debate, while underweight is an often ignored problem. The purpose of this article is to shed light on underweight in a sociological perspective focusing on both individual and structural perspectives. To illustrate this I use data from Project 3A, which includes 1.092 schoolchildren in the Municipality of Aalborg. The study was conducted in 2008-2011, where data was collected in 2008 when the schoolchildren attended 6th grade and in 2010 when they attended 8th grade. The results indicate that girls with mothers having a higher education are more likely to be underweight as opposed to girls with lower educated mothers. In addition, the results indicate that the likelihood of underweight to some extend increased among the schoolchildren who were exposed to an intervention that increased their own health knowledge, and to a behavioral altering intervention. Social inequality in weight was increased by the intervention that increases own health knowledge. Key words: Underweight, social inequality, self-perceived weight, issue of elite.

scholarly journals The Dynamics of Issue Attention in Online Communication on Climate Change

2015 ◽  
Vol 3 (1) ◽  
pp. 17-33 ◽  
Author(s):  
Ines Lörcher ◽  
Irene Neverla
Keyword(s):  
Climate Change ◽  
Online Communication ◽  
Discussion Forums ◽  
The Public ◽  
Quantitative Content ◽  
Ipcc Report ◽  
Automated Coding ◽  
Issue Attention ◽  
Reader Comments ◽  
Shed Light

Issues and their sub-topics in the public agenda follow certain dynamics of attention. This has been studied for “offline” media, but barely for online communication. Furthermore, the enormous spectrum of online communication has not been taken into account. This study investigates whether specific dynamics of attention on issues and sub-topics can be found in different online public arenas. We expect to identify differences across various arenas as a result of their specific stakeholders and constellations of stakeholders, as well as different trigger events. To examine these assumptions, we shed light on the online climate change discourse in Germany by undertaking a quantitative content analysis via manual and automated coding methods of journalistic articles and their reader comments, scientific expert blogs, discussion forums and social media at the time of the release of the 5th IPCC report and COP19, both in 2013 (n = 14.582). Our results show online public <em>arena-specific dynamics</em> of issue attention and sub-topics. In journalistic media, we find more continuous issue attention, compared to a public arena where everyone can communicate. Furthermore, we find <em>event-specific dynamics</em> of issue attention and sub-topics: COP19 received intensive and continuous attention and triggered more variation in the sub-topics than the release of the IPCC report.

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