174,541 research outputs found
Sea Salt Aerosol Datasets
No full text<p>This collection contains data necessary to duplicate the plots found in Ackerman et al. (2023). Woodcock csv files come from the manual interpretation of Woodcock (1953). (<i>Woodcock, A. H.: Salt nuclei in marine air as a function of altitude and wind force, J. Atmos. Sci., 10, 362–371, 1953.)</i></p><p>Ackerman, K. L., Nugent, A. D., and Taing, C.: Mechanisms controlling giant sea salt aerosol size distributions along a tropical orographic coastline, Atmos. Chem. Phys. [preprint], https://doi.org/10.5194/egusphere-2023-1387</p>
John C. Ackerman, (1915-1970), purchased by Estate of John C. Ackerman on October 10, 1970
No full textDocuments regarding the doucle headstone for John C. Ackerman (1915-1970), buried with his wife Nettie Thomas (1914-1962), at Calvary Cemetery, Lot 114, Section 38, in Toledo, Ohio. It was purchased by the estate of John C. Ackerman, Mr. Floyd, executor. The stone is made of Balfour Pink granite, and has crosses on each side of the marker. The letters and crosses are blown, and the face is polished. Rubbing is included
Ackerman Property
No full textEntry created by John H. Herrick April 12, 1976.John H. Herrick Archives: Documenting Structures at The Ohio State UniversityThe University Archives has determined that this item is of continuing value to OSU's history.The house was located at 1802 Olentangy River Road; the greenhouse salesroom was at 1794 Olentangy River Road. The Ackerman property was also known as the property owned by Gustav & Esther Ackerman, the site of the Ackerman Greenhouse Floral Company, and the house leased to Weldon C. Dillon
06-05 Can Climate Change Save Lives? A comment on “Economy-wide estimates of the implications of climate change: Human health”
No full textIn a recent article in this journal, Francesco Bosello, Roberto Roson, and Richard Tol make the surprising prediction that the first stages of global warming will, on balance, save a large number of lives. Bosello et al. fail to substantiate this remarkable estimate, and they make multiple mistaken or misleading assumptions. They rely on research that identifies a simple empirical relationship between temperature and mortality, but ignores the countervailing effect of human adaptation to gradual changes in average temperature. While focusing on small changes in average temperatures, they ignore the important health impacts of extreme weather events such as heat waves, droughts, floods, and hurricanes. They extrapolate this pattern far beyond the level that is apparently supported by their principal sources, and introduce an arbitrary assumption that may bias the result toward finding benefits from warming.
06-02 "The Unbearable Lightness of Regulatory Costs"
No full textWill unbearable regulatory costs ruin the US economy? This specter haunts official Washington, just as fears of communism once did. Once again, the prevailing rhetoric suggests, an implacable enemy of free enterprise puts our prosperity at risk. Like anti-communism in its heyday, anti-command-and-control-ism serves to narrow debate,promoting the unregulated laissez-faire economy as the sole acceptable goal and standard for public policy. Fears of the purported costs of regulation have been used to justify a sweeping reorganization of regulatory practice, in which the Office of Management and Budget (OMB) is empowered to, and often enough does, reject regulations from other agencies on the basis of intricate, conjectural, economic calculations. This article argues for a different perspective: what is remarkable about regulatory costs is not their heavy economic burden, but rather their lightness. Section 1 identifies two general reasons to doubt that there is a significant trade-off between prosperity and regulation: first, regulatory costs are frequently too small to matter; and second, even when the costs are larger, reducing them would not always improve economic outcomes. The next three sections examine evidence on the size and impact of regulatory costs. Section 2 presents cost estimates for a particularly ambitious and demanding environmental regulation, REACH -- the European Union's new chemicals policy. Section 3 discusses academic research on the "pollution haven" hypothesis, i.e. the assertion that firms move to developing countries in search of looser environmental regulations. Section 4 reviews the literature on ex ante overestimation of regulatory costs, including the recent claims by OMB that costs are more often underestimated (and/or benefits overestimated) in advance. Turning to the economic context, Section 5 explains why macroeconomic constraints may eliminate any anticipated economic gains from deregulation. Section 6 introduces a further economic argument against welfare gains from deregulation, based on the surprising evidence that unemployment decreases mortality. Section 7 briefly concludes.
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
05-01 "The Shrinking Gains from Trade: A Critical Assessment of Doha Round Projections"
No full textComputable general equilibrium (CGE) models of world trade, often presented as demonstrating the benefits of trade liberalization, now make much more modest forecasts than they did just a few years ago. The estimated benefits are not only small in the aggregate, but also skewed toward developed countries; the expected contribution of trade liberalization to economic development and poverty alleviation is extremely limited. Related calculations, for the expected benefits of services liberalization, trade facilitation measures, and long-term productivity gains from trade liberalization, remain problematical and/or speculative. The empirical limitations of CGE forecasts rest on broader theoretical weaknesses: the models are largely locked within a static framework, and remarkably assume that trade policy causes no changes in total employment, up or down. Models built on more adequate theories, which have only begun to appear, would paint a very different picture of the effects of trade liberalization.
W. Ackerman, B. Conein, C. Guigues et al. Décrire un impératif ? Description, explication, interprétation en sciences sociales
No full textLeimdorfer François. W. Ackerman, B. Conein, C. Guigues et al. Décrire un impératif ? Description, explication, interprétation en sciences sociales. In: Langage et société, n°38, 1986. pp. 80-81
06-07 “The Economics of Inaction on Climate Change: A Sensitivity Analysis”
No full textEconomic models of climate change often take the problem seriously, but paradoxically conclude that the optimal policy is to do almost nothing about it. We explore this paradox as seen in the widely used DICE model. Three aspects of that model, involving the discount rate, the assumed benefits of moderate warming, and the treatment of the latest climate science, are sufficient to explain the timidity of the model's optimal policy recommendation. With modifications to those three points, DICE shows that the optimal policy is a much higher and rapidly rising marginal carbon price; that higher carbon price has a greater effect on physical measures of climate impacts. Our modifications exhibit nonlinear interactions; at least at low discount rates, there is synergy between individual changes to the model. At low discount rates, the inherent uncertainty about future damages looms larger in the analysis, rendering long-run economic modeling less useful. Our analysis highlights the sensitivity of the model to three debatable assumptions; it does not, and could not, lead to a more reliably “optimal” cost of carbon. Cost-effectiveness analysis, focusing on the generally shorter-term cost side of the problem, reduces the economic paradoxes of the long run, and may make a greater contribution than economic optimization modeling.
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
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