Assessment of HPAC urban modelling capabilities using data from the Joint Urban 2003 field experiment

2011 ◽  
Vol 44 (1/2/3/4) ◽  
pp. 24 ◽  
Author(s):  
Jeffry T. Urban ◽  
Steve Warner ◽  
Nathan Platt ◽  
James F. Heagy
2015 ◽  
Vol 105 (5) ◽  
pp. 352-356 ◽  
Author(s):  
Allen Hicken ◽  
Stephen Leider ◽  
Nico Ravanilla ◽  
Dean Yang

Using data from an anti-vote-buying field experiment we conducted in the Philippines, we report and validate a proxy measure for vote-selling. We demonstrate that our proxy measure, vote-switching, changes as expected with voter preferences and monetary offers from candidates. Voters are less likely to vote for someone different than their initial preference the larger the favorability rating difference between the preferred and alternative candidates. Similarly, vote-switching increases the more money the alternative candidate offers compared to the preferred candidates. We also describe the effects of the promise-based interventions on vote-switching, reported in full in a companion paper.


1973 ◽  
Vol 5 (6) ◽  
pp. 705-717 ◽  
Author(s):  
Patricia F Apps

This is the second of three papers which describe a model of housing demand, using data from the town of Reading, Berkshire. The first paper sets out the theoretical framework for the model. This second paper documents the results for housing price indices and implicit prices for housing services, or characteristics, such as accessibility to employment and to schools, floor space, age, storey height, and number of garages. The third paper contains results for housing demand equations at three levels of aggregation, and for the real annual costs paid for similar housing in different tenure groups. The research is concerned with ways of obtaining information which is directly relevant to cost-benefit analysis in urban planning, information concerning what are urban services, the relative prices for the services, and the types of environments that produce these services. While the empirical work is restricted by the available data to a cross-section study of demand, the approach might be usefully applied to all types of urban analyses which involve evaluation.


2014 ◽  
Vol 104 (3) ◽  
pp. 1014-1039 ◽  
Author(s):  
Stefan Eriksson ◽  
Dan-Olof Rooth

The stigma associated with long-term unemployment spells could create large inefficiencies in labor markets. While the existing literature points toward large stigma effects, it has proven difficult to estimate causal relationships. Using data from a field experiment, we find that long-term unemployment spells in the past do not matter for employers' hiring decisions, suggesting that subsequent work experience eliminates this negative signal. Nor do employers treat contemporary short-term unemployment spells differently, suggesting that they understand that worker/firm matching takes time. However, employers attach a negative value to contemporary unemployment spells lasting at least nine months, providing evidence of stigma effects. (JEL E24, J23, J64, J71)


Author(s):  
Sule Alan ◽  
Seda Ertac ◽  
Elif Kubilay ◽  
Gyongyi Loranth

Abstract Using data from a large-scale field experiment, we show that while there is no gender difference in the willingness to make risky decisions on behalf of a group in a sample of children, a large gap emerges in a sample of adolescents. The proportion of girls who exhibit leadership willingness drops by 39% going from childhood to adolescence. We explore the possible factors behind this drop and find that it is largely associated with a dramatic decline in “social confidence”, measured by the willingness to perform a real effort task in public.


2013 ◽  
Vol 103 (4) ◽  
pp. 1138-1171 ◽  
Author(s):  
Pascaline Dupas ◽  
Jonathan Robinson

Using data from a field experiment in Kenya, we document that providing individuals with simple informal savings technologies can substantially increase investment in preventative health and reduce vulnerability to health shocks. Simply providing a safe place to keep money was sufficient to increase health savings by 66 percent. Adding an earmarking feature was only helpful when funds were put toward emergencies, or for individuals that are frequently taxed by friends and relatives. Group-based savings and credit schemes had very large effects. (JEL C93, D14, D91, I12, O12)


2010 ◽  
Vol 40 (2) ◽  
pp. 333-347 ◽  
Author(s):  
Cynthia Farrar ◽  
James S. Fishkin ◽  
Donald P. Green ◽  
Christian List ◽  
Robert C. Luskin ◽  
...  

Using data from a randomized field experiment within a Deliberative Poll, this paper examines deliberation’s effects on both policy attitudes and the extent to which ordinal rankings of policy options approach single-peakedness (a help in avoiding cyclical majorities). The setting was New Haven, Connecticut, and its surrounding towns; the issues were airport expansion and revenue sharing – the former highly salient, the latter not at all. Half the participants deliberated revenue sharing, then the airport; the other half the reverse. This split-half design helps distinguish the effects of the formal on-site deliberations from those of other aspects of the treatment. As expected, the highly salient airport issue saw only a slight effect, while much less salient revenue-sharing issue saw a much larger one.


2017 ◽  
Vol 9 (3) ◽  
pp. 70-104 ◽  
Author(s):  
Elizabeth Lyons

Coworkers are increasingly diverse in their nationality and skill sets. This paper studies the effect of diversity on how workers are organized using data from a field experiment conducted in an environment where diversity is pervasive. Findings show that team organization improves outcomes when workers are from the same country. The opposite is true when workers are nationally diverse. These results are more pronounced for teams of workers with specialized skills. Further investigation of the data suggests that nationally diverse teams have difficulty communicating. (JEL D83, F23, F66, J24, M16, M54)


2021 ◽  
Author(s):  
Roberta Pulcher ◽  
Enrico Balugani ◽  
Maurizio Ventura ◽  
Diego Marazza

Abstract. Biochar production and application as soil amendment is a promising carbon (C) negative technology to increase soil C sequestration and mitigate climate change. However, there is a lack of knowledge about biochar degradation rate in soil and its effects on native soil organic carbon (SOC), mainly due to the absence of long term experiments performed in field conditions. The aim of this work was to investigate the long term degradation rate of biochar in a field experiment of 8 years in a poplar short rotation coppice plantation in Piedmont (Italy), and to modify the RothC model to assess and predict how biochar influences soil C dynamics. The RothC model was modified by including two biochar pools, labile (4 % of the total biochar mass) and recalcitrant (96 %), and the priming effect of biochar on SOC. The model was calibrated and validated using data from the field experiment. The results confirm that biochar degradation can be faster in field conditions in comparison to laboratory experiments; nevertheless, it can contribute to substantially increase the soil C stock in the long-term. Moreover, this study shows that the modified RothC model was able to simulate the dynamics of biochar and SOC degradation in soils in field conditions in the long term, at least in the specific conditions examined.


Sign in / Sign up

Export Citation Format

Share Document