منابع مشابه
Diverse Cities Spend More
Previous authors have argued that ethnically diverse cities spend less on public goods than their homogeneous counterparts. In this paper, I present new evidence that challenges this claim. Incorporating improved measures of local expenditures in a panel study of US cities, I find that diversifying cities spend more per capita on most public goods – including police, fire protection, sanitation...
متن کاملDouble spend races
We correct the double spend race analysis given in Nakamoto’s foundational Bitcoin article and give a closed-form formula for the probability of success of a double spend attack using the Regularized Incomplete Beta Function. We give the first proof of the exponential decay on the number of confirmations and find an asymptotic formula. Larger number of confirmations are necessary compared to th...
متن کاملNowhere to hide.
Northern Hemisphere's carbon dioxide emissions. "That's much more than any terrestrial plant ecologist would have considered likely," Tans said. Conserving tree and plant populations, he added, might raise their carbon dioxide uptake even higher. Understanding how carbon cycles through plants is vital to decreasing global warming. By burning fuel and clearing forests, human activity generates 7...
متن کاملNesiritide – Run and hide?
Data extraction: Data were extracted from FDA and sponsor documents and corroborated with published articles when available. Thirty-day survival was assessed by metaanalysis using a fixed-effects model and time-dependent risk by Kaplan-Meier analysis with Cox proportional hazards regression modeling. Where deaths were described within a range of days after treatment, an extreme assumption was m...
متن کاملJekyll and Hide
Neurodegenerative diseases are a burden of our century. Although significant efforts were made to find a cure or relief to this scourge, their pathophysiology remains vague and the cellular function of the key involved proteins is still unclear. However, in the case of amyloid β (Aβ), a key protein concerned in Alzheimer disease, we are now a step closer in the unscrambling of its cellular func...
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ژورنال
عنوان ژورنال: BMJ
سال: 2007
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.39211.438646.59