1,749 research outputs found
Smart Growth: The Future of the American Metropolis?
In the past few years, widespread frustration with sprawling development patterns has precipitated an explosion in innovative thinking and action across the United States. This new thinking - generally labeled as "smart growth" - contends that the shape and quality of metropolitan growth in America are no longer desirable or sustainable. It argues that metropolitan areas could grow in radically different ways if major government policies on land use, infrastructure and taxation were overhauled. This essay discusses the current state of smart growth and metropolitan thinking in the United States. It outlines the demographic, market and development trends that are affecting metropolitan areas and the consequences of these trends for central cities, older suburbs, newer communities and low-income and minority families. It describes how current government policies facilitate the excessive decentralization of people and jobs and how smart growth reforms are being enacted, particularly at the state level, to shape new, more urban-friendly, growth patterns. It concludes by identifying the major challenges that smart growth needs to address if it is going to succeed in shaping new, sustainable metropolitan communities.Smart growth, sprawl, metropolitan governance, decentralisation, urban revitalisation, eocnomic competitiveness, sustainability, tax and regulatory policy
The Rise of Innovation Districts: A New Geography of Innovation in America
As the United States slowly emerges from the great recession, a remarkable shify is occurring in the spatial geogrpahy of innovation. For the past 50 years, the landscape of innovation has been dominated by places like Silicon Valley - suburban corridors of spatially isolated corporate campuses, accessible only by car, with little emphasis on the quality of life or on integrating work, housing, and recreation. A new complementary urban model is now emerging, giving rise to what we and others are calling "innovation districts." These districts, by our definition, are geographic areas where leading-edge anchor institutions and companies cluster and connect with start-ups, business incubators, and accelerators. They are also physically compact, transit-accessible, and technicall
Unemployment Insurance, Recall Expectations, And Unemployment Outcomes
This paper shows the importance of explicitly accounting for the possibility of recalls when analyzing the determinants of unemployment spell durations and the effects of unemployment insurance (UI) on unemployment outcomes in the United States. These issues are examined using a unique sample of UI recipients from Missouri and Pennsylvania covering unemployment spells in the 1979- 1981 period. We find that those expecting recall who are not recalled tend to have quite long unemployment spells. Furthermore, ex-ante temporary layoff spells (the spells of individuals' who initially expect to be recalled) may account for over 60 percent of the unemployment of UI recipients and appear to account for much more unemployment than ex-post temporary layoff spells (spells actually ending in recall). We estimate a competing risks model in which the finding of a new job and recall are treated as alternate routes of leaving unemployment. Our results using this approach show that the recall and new job exit probabilities have quite different time patterns and are often affected in opposite ways by explanatory variables. We also find that the probability of leaving unemployment (both through recalls and new job finding) increases greatly around the time that UI benefits lapse.
The Impact of the Potential Duration of Unemployment Benefits on the Duration of Unemployment
This paper uses two data sets to examine the impact of the potential duration of unemployment insurance (UI) benefits on the duration of unemployment and the time pattern of the escape rate from unemployment in the United States. The first part of the empirical work uses a large sample of household heads to examine differences in the unemployment spell distributions of UI recipients and nonrecipients. Sharp increases in the rare of escape from unemployment both through recalls and new job acceptances are apparent for UI recipients around the time when benefits are likely to lapse. The absence of such spikes in the escape rate from unemployment for nonrecipients strongly suggests that the potential duration of UI benefits affects firm recall policies and workers' willingness to start new jobs. The second part of our empirical work uses administrative data to examine the effects of the level and length of UT benefits on the escape rate from unemployment of UI recipients. The results indicate that a one week increase in potential benefit duration increases the average duration of the unemployment spells of UI recipients by 0,16 to 0.20 weeks. The estimates also imply that policies that extend the potential duration of benefits increase the mean duration of unemployment by substantially more than policies with the same predicted impact on the total UI budget that raise the level of benefits while holding potential duration constant.
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Dialing in single-site reactivity of a supported calixarene-protected tetrairidium cluster catalyst.
A closed Ir4 carbonyl cluster, 1, comprising a tetrahedral metal frame and three sterically bulky tert-butyl-calix[4]arene(OPr)3(OCH2PPh2) (Ph = phenyl; Pr = propyl) ligands at the basal plane, was characterized with variable-temperature 13C NMR spectroscopy, which show the absence of scrambling of the CO ligands at temperatures up to 313 K. This demonstration of distinct sites for the CO ligands was found to extend to the reactivity and catalytic properties, as shown by selective decarbonylation in a reaction with trimethylamine N-oxide (TMAO) as an oxidant, which, reacting in the presence of ethylene, leads to the selective bonding of an ethyl ligand at the apical Ir site. These clusters were supported intact on porous silica and found to catalyze ethylene hydrogenation, and a comparison of the kinetics of the single-hydrogenation reaction and steady-state hydrogenation catalysis demonstrates a unique single-site catalyst-with each site having the same catalytic activity. Reaction orders in the catalytic ethylene hydrogenation reaction of approximately 1/2 and 0 for H2 and C2H4, respectively, nearly match those for conventional noble-metal catalysts. In contrast to oxidative decarbonylation, thermal desorption of CO from silica-supported cluster 1 occurred exclusively at the basal plane, giving rise to sites that do not react with ethylene and are catalytically inactive for ethylene hydrogenation. The evidence of distinctive sites on the cluster catalyst leads to a model that links to hydrogen-transfer catalysis on metals-involving some surface sites that bond to both hydrocarbon and hydrogen and are catalytically engaged (so-called "*" sites) and others, at the basal plane, which bond hydrogen and CO but not hydrocarbon and are reservoir sites (so-called "S" sites)
Do in-Kind Transfers Damage Local Markets? The Case of TOMS Shoe Donations in El Salvador
We carry out a cluster randomized trial among 979 households in rural El Salvador to test whether shoe donations exhibit negative impacts on local shoe markets. Households in half of our communities were given a pair of children’s shoes at baseline (treatment communities), while all households were given coupons that could be used for shoe purchases at a local shoe store. Although point estimates on coupon redemption and difference-in-difference estimations indicate shoe purchases to be slightly lower among households receiving the donated shoes, we find no statistically significant difference in market shoe purchases between treatment and control households
Reclaiming Prosperity: Repositioning Southern Nevada for the Next Economy
The outlines of the next American economy are coming into focus, yet the future remains uncertain in Southern Nevada as America\u27s newest metropolis labors through a major recession. It is time therefore to get back on track and begin laying the foundation for a new and more durable kind of growth in metropolitan Las Vegas and across the Intermountain West. To help with that, urban visionary Bruce Katz advanced a powerful depiction of the next American economy in a major UNLV lecture and articulated a bold agenda for helping Las Vegas reclaim prosperity in the new era
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