1,721,578 research outputs found
Fiscal Decentralization, Political Heterogeneity and Welfare
No full textPoliticalEconomyTheoretical and empirical literature on �������scal decentralization has been thriving, while understanding the welfare implications of �������scal decentralization under political diversity necessitates further investigation. Authors Erkmen G. Aslim and co-author Bilin Neyapti contribute to this literature by formally modeling the interaction between the central government and local governments, where the latter may have varying degrees of political proximity to the former. The model solution reveals that the optimal tax rate is positively associated with �������scal decentralization, political unison, and spillovers across localities, while the local tax collection e�������ort is negatively associated with all of these parameters. The �������rst novel �������nding of this study is that both the welfare and the central government��������s utility peak and income distribution is more equitable at a lower level of �������scal decentralization when spillovers exist than otherwise, which supports the decentralization theorem. The second novel �������nding is that both the amount of redistributable income and central government utility increases with political unison
The Relationship Between Health Insurance and Early Retirement: Evidence from the Affordable Care Act
No full textMacroeconomicsAs the Affordable Care Act (ACA) recently expanded Medicaid coverage to low-income childless adults, the uninsured rate reached a record low in 2015. In contrast, large firms with 200 or more employees are continuing to cut retiree benefits. With Medicaid as a new alternative to early retiree health insurance, it is important to understand the effects of the ACA��������s Medicaid expansion on early retirement. This article summarizes working paper 1807, where PERC researcher Erkmen Giray Aslim studies the effect of the Affordable Care Act��������s Medicaid expansion on the decision to retire
Replication package for: "Vaccination Policy, Delayed Care, and Health Expenditures"
No full text<p>This file contains the replication package for the paper "Vaccination Policy, Delayed Care, and Health Expenditures" by Erkmen G. Aslim, Wei Fu, Chia-Lun Liu, and Erdal Tekin.</p>
Highly calcareous lacustrine soils in the Great Konya Basin, Turkey
No full textThe Great Konya Basin is in the south of the Central Anatolian Plateau in Turkey. It is a depression without outlet to the sea. The central part of the Basin is the floor of a former Pleistocene lake, the Ancient Konya Lake. This area, called the LacustrinePlain, has highly calcareous clayey sediments and is flat and level, except for ancient shorelines which form sandy ridges and beaches. Its soils have been studied in the summers of 1964-8 as part of the Konya Project, a research and training programme of the Department of Tropical Soil Science of the Agricultural University, Wageningen. This book is the last publication about the results in a series of five.The Quarternary history of the Lacustrine Plain, as regards sedimentation, was reconstructed with the help of existing climatic chronologies and with observations on geomorphology, soils, shells and pollen. Presumably Ancient Konya Lake, which had a constant level of about 1017 m, dried up in Postpluvial I (about 16.000 BC) and four smaller lakes or marshes existed in secondary depressions during Sub-pluvial I (about 9000 BC) which gradually disappeared. Their level varied between 1000 and 1006 m.The soils of the Lacustrine Plain were mostly formed in white uniform carbonatic clay, but differ markedly in composition and morphology because of past and present differences in hydrology, topography and vegetation. The soils have been studied and mapped on a regional basis and divided into Steppe Marl Soils, Marsh Marl Soils and Playa Marl Soils. The last group occurs north and east of Karapinar and is strongly salt- affected. Profile data of some 13 representative Marl Soil profiles are presented in the form of structural diagrams and tables for easy reference.Soil peels (preserved natural soil profiles) of the same representative soils are also used for a precise description of the pedological features and voids of the soil material, using Brewer's system of 'pedography'. Areas for more expensive thin sections could be selected more carefully. Interpretation is based on the descriptions in the field, in the soil peel and occasionally in thin section. Organisms, presumably mainly earthworms, seemed the main cause of the present structure of the solum. The effects of recent cultivation and irrigation are also demonstrated. Redistribution of carbonates humus and iron is observed and explained.The textural and mineralogical composition of Marl Soils was studied superficially. The soil texture without removal of carbonates is mostly clay to silty-clay and is slightly finer- textured after carbonates have been removed. The carbonates (mainly calcium carbonate as calcite) occupy about an equal proportion of the clay, silt and sand fractions. Clay minerals of the smectite group are commonest and palygorskite is present.The carbonatic clayey parent material of the Marl Soil is a sediment of about 60% mainly chemically precipitated calcite, debris from limestone and shells and the rest is a residue of non-calcareous clay minerals of residual and alluvial origin and sand sized mineral grains of alluvial or aeolian origin.The productivity of Steppe Marl Soils is estimated, using results from the soil peels and data on moisture and soil fertility. The suitability for agriculture is estimated by an existing procedure, which was refined and adapted to the area. The procedure compares estimated deficiencies in soil structure, soil moisture and chemical soil fertility in comparison with ideal conditions. The feasibility for improvement is then assessed for three management systems: dry farming without fertilizers, dry far ing with fertilizers and irrigated farming with fertilizers. The soil suitability in 4 classes (good, fair, restricted and unsuitable) is assessed on the basis of the above analysis. The suitability of Steppe Marl Soils for agriculture is judged as 'unsuitable' or 'restricted' under the dry-farming systems, mainly because of lack of moisture and 'restricted' under irrigation (mainly because of poor irrigability and poor response to fertilizers). It may become 'fair' under highly sophisticated irrigational management as is demonstrated on comparable soils in Israel and Florida
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
The Relationship Between Health Insurance and Early Retirement: Evidence from the A�������ordable Care Act
No full textRetirement_SavingsBeginning with the first round of the Affordable Care Act��������s Medicaid expansions, which specifically targeted low-income adults without dependent children, the uninsured rate reached a record low in 2015. However, the spillover effects of the Medicaid expansion, such as the relationship between health insurance and labor supply, have become a point of interest for both researchers and policy makers alike. In working paper 1807, PERC postdoctoral research associate Erkmen Giray Aslim investigates whether the increased availability of Medicaid through the ACA��������s expansions affects the retirement decisions of targeted workers. Among low-income childless adults, findings show that the expansions increased Medicaid enrollment for both men and women, and that enrollment resulted in women retiring early, whereas no significant change was observed for men
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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