scholarly journals Minimizing aggregation errors when measuring potential access to services for social groups at the city scale

2020 ◽  
pp. 239980832097020
Author(s):  
Chengcheng Wu ◽  
Neil A Powe ◽  
Alison Copeland
Keyword(s):  
Social Group ◽  
Social Groups ◽  
Relative Difference ◽  
Absolute Difference ◽  
Access To Services ◽  
Policy Makers ◽  
Service Areas ◽  
Population Weighting ◽  
The City ◽  
Weighting Technique

This research explores how to minimize aggregation errors when measuring potential access to services for social groups at the city scale. It develops a cadastral and address-based population weighting technique, the Household Space Weighting, to reduce aggregation errors caused by using population weighted centroids when applying the Have Their Centre In criterion (the Population Weighted Centroid technique). The Household Space Weighting technique is formally tested in a case study of General Practitioner practices in Newcastle upon Tyne, UK. The findings suggest that the Population Weighted Centroid technique produces inaccurate population estimates for 267 out of 910 output areas (29%) in the city. When applying the two techniques to measure access for social groups at the city scale, the absolute difference in the percentage of each social group with potential accessibility is 9–10% and the relative difference in the percentage of each social group with potential access is 18–20%, taking into account the overlay of service areas at the city scale. This suggests that if service planners or policy makers want to measure potential accessibility or potential access of social groups to services for cities, it would be useful to apply a more accurate technique, or at least be aware of the implications of applying the Population Weighted Centroid technique.

Evaluation of Road Utilisation as Space For Holding Social Ceremonies in Indigenous Residential Area of Ogbomoso, Nigeria

2018 ◽  
Vol 1 (March 2018) ◽  
Author(s):  
S.A Okanlawon ◽  
O.O Odunjo ◽  
S.A Olaniyan
Keyword(s):  
Transport Infrastructure ◽  
Noisy Environment ◽  
Policy Makers ◽  
The Core ◽  
Local Roads ◽  
Strict Enforcement ◽  
The Mean ◽  
The One ◽  
The City ◽  
The Town

This study examined Residents’ evaluation of turning transport infrastructure (road) to spaces for holding social ceremonies in the indigenous residential zone of Ogbomoso, Oyo State, Nigeria. Upon stratifying the city into the three identifiable zones, the core, otherwise known as the indigenous residential zone was isolated for study. Of the twenty (20) political wards in the two local government areas of the town, fifteen (15) wards that were located in the indigenous zone constituted the study area. Respondents were selected along one out of every three (33.3%) of the Trunk — C (local) roads being the one mostly used for the purpose in the study area. The respondents were the residents, commercial motorists, commercial motorcyclists, and celebrants. Six hundred and forty-two (642) copies of questionnaire were administered and harvested on the spot. The Mean Analysis generated from the respondents’ rating of twelve perceived hazards listed in the questionnaire were then used to determine respondents’ most highly rated perceived consequences of the practice. These were noisy environment, Blockage of drainage by waste, and Endangering the life of the sick on the way to hospital; the most highly rated reasons why the practice came into being; and level of acceptability of the practice which was found to be very unacceptable in the study area. Policy makers should therefore focus their attention on strict enforcement of the law prohibiting the practice in order to ensure more cordial relationship among the citizenry, seeing citizens’ unacceptability of the practice in the study area.

What Makes a City Bikeable? A Study of Intercity and Intracity Patterns of Bicycle Ridership using Mobike Big Data Records

2020 ◽  
Vol 46 (1) ◽  
pp. 55-75
Author(s):  
Ying Long ◽  
Jianting Zhao
Keyword(s):  
Big Data ◽  
Average Distance ◽  
Policy Implications ◽  
Rating System ◽  
City Centre ◽  
Average Score ◽  
Policy Makers ◽  
Usage Frequency ◽  
Share Data ◽  
The City

This paper examines how mass ridership data can help describe cities from the bikers' perspective. We explore the possibility of using the data to reveal general bikeability patterns in 202 major Chinese cities. This process is conducted by constructing a bikeability rating system, the Mobike Riding Index (MRI), to measure bikeability in terms of usage frequency and the built environment. We first investigated mass ridership data and relevant supporting data; we then established the MRI framework and calculated MRI scores accordingly. This study finds that people tend to ride shared bikes at speeds close to 10 km/h for an average distance of 2 km roughly three times a day. The MRI results show that at the street level, the weekday and weekend MRI distributions are analogous, with an average score of 49.8 (range 0–100). At the township level, high-scoring townships are those close to the city centre; at the city level, the MRI is unevenly distributed, with high-MRI cities along the southern coastline or in the middle inland area. These patterns have policy implications for urban planners and policy-makers. This is the first and largest-scale study to incorporate mobile bike-share data into bikeability measurements, thus laying the groundwork for further research.

Conquering the Public Space

2018 ◽  
Author(s):  
Samuel Llano
Keyword(s):  
Public Space ◽  
Social Services ◽  
Social Groups ◽  
Public Image ◽  
Working Classes ◽  
The Public ◽  
San Bernardino ◽  
The City

This chapter presents an account of the San Bernardino band as the public facade of that workhouse. The image of children who had been picked up from the streets, disciplined, and taught to play an instrument as they marched across the city in uniform helped broadcast the message that the municipal institutions of social aid were contributing to the regeneration of society. This image contrasted with the regime of discipline and punishment inside the workhouse and thus helped to legitimize the workhouse’s public image. The privatization of social aid from the 1850s meant that the San Bernardino band engaged with a growing range of institutions and social groups and carried out an equally broad range of social services. It was thus able to serve as the extension through which Madrid’s authorities could gain greater intimacy with certain population sectors, particularly with the working classes.

scholarly journals The prevalence of underweight in 9–10-year-old schoolchildren in Liverpool: 1998–2006

2009 ◽  
Vol 12 (7) ◽  
pp. 953-956 ◽  
Author(s):  
Lynne M Boddy ◽  
Allan F Hackett ◽  
Gareth Stratton
Keyword(s):  
Mass Spectrum ◽  
Body Mass ◽  
The Body ◽  
Fitness Testing ◽  
Policy Makers ◽  
Substantial Problem ◽  
Prevalence Of Obesity ◽  
Grade 3 ◽  
The City ◽  
Over Time

AbstractObjectiveTo estimate the prevalence of underweight between 1998 and 2006 in Liverpool schoolchildren aged 9–10 years using recently published underweight cut-off points.Design and settingStature and body mass data collected at the LiverpoolSportsLinx project’s fitness testing sessions were used to calculate BMI.SubjectsData were available on 26 782 (n13 637 boys, 13 145 girls) participants.ResultsOverall underweight declined in boys from 10·3 % in 1998–1999 to 6·9 % in 2005–2006, and all sub-classifications of underweight declined, in particular grade 3 underweight, with the most recent prevalence being 0·1 %. In girls, the prevalence of underweight declined from 10·8 % in 1998–1999 to 7·5 % in 2005–2006. The prevalence of all grades of underweight was higher in girls than in boys. Underweight showed a fluctuating pattern across all grades over time for boys and girls, and overall prevalence in 2005–2006 represents over 200 children across the city.ConclusionsUnderweight may have reduced slightly from baseline, but remains a substantial problem in Liverpool, with the prevalence of overall underweight being relatively similar to the prevalence of obesity. The present study highlights the requirement for policy makers and funders to consider both ends of the body mass spectrum when fixing priorities in child health.

Towards a computational theory of social groups: A finite set of cognitive primitives for representing any and all social groups in the context of conflict

2021 ◽  
pp. 1-62
Author(s):  
David Pietraszewski
Keyword(s):  
Social Group ◽  
Group Representation ◽  
Social Groups ◽  
Study Groups ◽  
Human Mind ◽  
Computational Theory ◽  
Mistaken Belief ◽  
Finite Set ◽  
The One ◽  
Definition Of

Abstract We don't yet have adequate theories of what the human mind is representing when it represents a social group. Worse still, many people think we do. This mistaken belief is a consequence of the state of play: Until now, researchers have relied on their own intuitions to link up the concept social group on the one hand, and the results of particular studies or models on the other. While necessary, this reliance on intuition has been purchased at considerable cost. When looked at soberly, existing theories of social groups are either (i) literal, but not remotely adequate (such as models built atop economic games), or (ii) simply metaphorical (typically a subsumption or containment metaphor). Intuition is filling in the gaps of an explicit theory. This paper presents a computational theory of what, literally, a group representation is in the context of conflict: it is the assignment of agents to specific roles within a small number of triadic interaction types. This “mental definition” of a group paves the way for a computational theory of social groups—in that it provides a theory of what exactly the information-processing problem of representing and reasoning about a group is. For psychologists, this paper offers a different way to conceptualize and study groups, and suggests that a non-tautological definition of a social group is possible. For cognitive scientists, this paper provides a computational benchmark against which natural and artificial intelligences can be held.

A Practitioner’s Perspective on Realignment

2016 ◽  
Vol 664 (1) ◽  
pp. 221-235
Author(s):  
Wendy S. Still
Keyword(s):  
San Francisco ◽  
Local Level ◽  
Interagency Collaboration ◽  
Cultural Barriers ◽  
Practical Implementation ◽  
Direct Experience ◽  
Policy Makers ◽  
Alternatives To Incarceration ◽  
Level I ◽  
The City

This article offers a practitioner’s perspective on California’s criminal justice Realignment. Drawing on my direct experience implementing Realignment as the chief probation officer in the city and county of San Francisco, I argue that the San Francisco case illustrates how decarceration can occur without compromising public safety, and I offer a set of lessons for practitioners and policy-makers about how to achieve decarceration despite local political, organizational, and cultural barriers. Specifically, I identify interagency collaboration, investment in community corrections and a commitment to alternatives to incarceration and community engagement with the families of both victims and offenders as key facilitators of decarceration at the local level. I urge observers not to dismiss these lessons as idiosyncratic to San Francisco’s unique locale. Rather, my experience has been that even San Francisco’s exceptionally hospitable local culture is not enough to successfully implement reform; structural arrangements that institutionalize the practical implementation of cultural commitments to reduce reliance on incarceration are required.

Tussen buurt en stadsregio : Anderhalf jaar stedelijk beleid in Vlaanderen

Res Publica ◽  
1997 ◽  
Vol 39 (1) ◽  
pp. 125-138
Author(s):  
Leo Peeters
Keyword(s):  
Inner City ◽  
Social Groups ◽  
Budget Cuts ◽  
Central Cities ◽  
Regional Context ◽  
Welfare Policies ◽  
Brick And Mortar ◽  
Urban Problems ◽  
New Policies ◽  
The City

Since several elections since 1991 were won by an extreme right political party, especially in the Flanders and in the city of Antwerp, polities has responded with an increase in attention for environmental and social policies. In a first reaction - and after a longstand period of budget cuts - more money was invested in the building ofsocial housing. Later this policy was broadened to a more comprehensive policy for the cities, trying to integrate the brick-and-mortar approaches with welfare policies. In this contribution three things are put into perspective. The first deals with the rise of the urban problems. A second part deals with the new policies who are implemented today. These are territorially targeted at poor neighbourhoods. In a final part these policies are situated in a regional context since the liveability of the central cities can not be seen without its regional context, since very often the more wealthy people are living outside the administrative boundaries while the vulnerable social groups are living in the older inner city neighbourhoods.

Time budgets of group-housed pigs in relation to social aggression and production

2021 ◽  
Author(s):  
Carly I O’Malley ◽  
Juan P Steibel ◽  
Ronald O Bates ◽  
Catherine W Ernst ◽  
Janice M Siegford
Keyword(s):  
Social Group ◽  
Social Groups ◽  
Social Aggression ◽  
Growing Pigs ◽  
Least Square ◽  
Time Budgets ◽  
Aggressive Behaviors ◽  
Welfare Benefits ◽  
Production Parameters ◽  
Use Of Resources

Abstract Commercial producers house growing pigs by sex and weight to allow for efficient use of resources and provide pigs the welfare benefits of interacting with their conspecifics and more freedom of movement. However, introduction of unfamiliar pigs can cause increased aggression for 24-48 h as pigs establish social relationships. To address this issue, a better understanding of pig behavior is needed. The objectives of this study were to quantify time budgets of pigs following introduction into a new social group and how these changed over time, and to investigate how social aggression influences overall time budgets and production parameters. A total of 257 grow-finish Yorkshire barrows across 20 pens were introduced into new social groups at 10 wk of age (~23 kg) and observed for aggression and time budgets of behavior at 4 periods: immediately after introduction, 3, 6, and 9 wk later. Pigs were observed for duration of total aggression and initiated aggression (s) for 9 h after introduction and for 4 h at 3, 6, and 9 wk later. Time budgets were created by scan-sampling inactive, movement, ingestion, social, and exploration behaviors every 2 min for 4 h in the afternoon and summarizing proportion of time each behavior was performed by period. Least square means of each behavior were compared across time points. Pigs spent most of their time inactive. In general, the greatest change in pig behavior was observed between introduction and wk 3 (P<0.003), with gradual changes throughout the study period as pigs became more inactive (wk 3 vs. wk 6: P=0.209; wk 6 vs. wk 9: P=0.007) and spent less time on other behaviors. Pigs’ non-aggressive behavior and production parameters were compared to aggression using generalized linear mixed models. The time pigs spent on non-aggressive behaviors were negatively related to aggression (P<0.045) with few exceptions. Initiated aggression after introduction was negatively related to loin muscle area (P=0.003). These results show how finishing pigs spend their time in commercial facilities and indicate that behavior continues to change for up to 9 wk after introduction to a new social group. Efforts to reduce chronic levels of aggression should focus on promoting non-aggressive behaviors, such as exploration and movement, after the initial fighting that occurs immediately after introduction has waned and should be implemented for up at 9 wk after introduction into new social groups.

scholarly journals UniverCity: The Vicious Cycle of Studentification in a Peripheral City

2018 ◽  
Vol 17 (4) ◽  
pp. 1248-1269 ◽  
Author(s):  
Nufar Avni ◽  
Nurit Alfasi
Keyword(s):  
Social Impacts ◽  
Vicious Cycle ◽  
Policy Makers ◽  
Central Location ◽  
The City ◽  
Economic And Social Impacts

Research on studentification has unpacked the spatial, economic, and social impacts that are associated with the growing presence of students in cities. Nonetheless, considerably less attention has been paid to the broader regional and national contexts that shape studentification. Using the case study of Ben–Gurion University of the Negev, Beersheba, we argue that the studentification of the city should be understood within its context as the periphery of the country. Despite the university's central location and its involvement in revitalization efforts in the region, Ben–Gurion University is surrounded by marginalized neighborhoods which have turned into a “student bubble”. We show that the segregation between the campus and the city results from a vicious cycle that reproduces the city's poor image and disrupts the university's attempts to advance the city and region. Although overlooked by policy–makers, the implications of this cycle reach far beyond the campus' surrounding and affect the city and to some extent the whole region.

Earnings, EITC, and Employment Responses to a $15 Minimum Wage: Will Low-Income Workers Be Better Off?

2019 ◽  
Vol 33 (4) ◽  
pp. 331-350 ◽  
Author(s):  
Fahad Fahimullah ◽  
Yi Geng ◽  
Bradley Hardy ◽  
Daniel Muhammad ◽  
Jeffrey Wilkins
Keyword(s):  
Minimum Wage ◽  
Low Income ◽  
Computable General Equilibrium ◽  
Computable General Equilibrium Model ◽  
Perfect Competition ◽  
Tax Credit ◽  
Wage Policy ◽  
Policy Makers ◽  
Consumer Prices ◽  
The City

The District of Columbia will increase its minimum wage to $15 per hour in 2020. The city also provides a local refundable earned income tax credit (EITC) equal to 40% of the federal EITC. Using a computable general equilibrium model, the authors estimate the economic impact of the $15 wage policy. They also use a tax policy microsimulation model to estimate how the city’s EITC interacts with a higher minimum wage. Overall, the authors find that the higher minimum wage will produce significant income gains for most of the city’s low-wage workers, with relatively few job losses. Additionally, they forecast that most city EITC recipients will receive a lower EITC, but higher earnings more than offset the reduced tax credit. The model predicts that this policy change would largely be funded by higher consumer prices, lower firm profits, and higher business productivity. These predictions are subject to important caveats, including a local labor market that is likely inadequately characterized in a model assuming perfect competition. Economic policy makers should therefore use such modeling approaches as a powerful but ultimately imperfect tool.

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