scholarly journals Vertical and Horizontal Price Linkages and Market Concentration in the U.S. Wheat Milling Industry

1993 ◽  
Vol 15 (3) ◽  
pp. 507 ◽  
Author(s):  
Gary W. Brester ◽  
Barry K. Goodwin
Keyword(s):  
2020 ◽  
Vol 135 (2) ◽  
pp. 645-709 ◽  
Author(s):  
David Autor ◽  
David Dorn ◽  
Lawrence F Katz ◽  
Christina Patterson ◽  
John Van Reenen

Abstract The fall of labor’s share of GDP in the United States and many other countries in recent decades is well documented but its causes remain uncertain. Existing empirical assessments typically rely on industry or macro data, obscuring heterogeneity among firms. In this article, we analyze micro panel data from the U.S. Economic Census since 1982 and document empirical patterns to assess a new interpretation of the fall in the labor share based on the rise of “superstar firms.” If globalization or technological changes push sales toward the most productive firms in each industry, product market concentration will rise as industries become increasingly dominated by superstar firms, which have high markups and a low labor share of value added. We empirically assess seven predictions of this hypothesis: (i) industry sales will increasingly concentrate in a small number of firms; (ii) industries where concentration rises most will have the largest declines in the labor share; (iii) the fall in the labor share will be driven largely by reallocation rather than a fall in the unweighted mean labor share across all firms; (iv) the between-firm reallocation component of the fall in the labor share will be greatest in the sectors with the largest increases in market concentration; (v) the industries that are becoming more concentrated will exhibit faster growth of productivity; (vi) the aggregate markup will rise more than the typical firm’s markup; and (vii) these patterns should be observed not only in U.S. firms but also internationally. We find support for all of these predictions.


2021 ◽  
Vol 58 (1) ◽  
pp. 51-79
Author(s):  
Carl Shapiro ◽  
Howard Shelanski

AbstractWe study how the courts have responded to the 2010 Horizontal Merger Guidelines issued by the U.S. Department of Justice and the Federal Trade Commission. Looking at decided cases, we find that both the government and merging parties rely on the 2010 Guidelines in presenting their cases, each side respectively arguing that it should win if the court properly follows them . The 2010 Guidelines had the strongest effect on the case law in the area of unilateral effects, where a number of courts have embraced them in ways that clearly depart from earlier decisions. The case law now exhibits much greater receptivity to a government showing that the merger will lead to higher prices simply due to the loss of direct competition between the two merging firms. The courts also have followed the 2010 Guidelines by more willingly defining markets around targeted customers. We do not detect any effect on decided cases of the higher concentration thresholds found in the 2010 Guidelines. Both the average pre-merger level of market concentration and the average increase in market concentration alleged by the government in litigated cases to date declined after 2010 .


2016 ◽  
Vol 31 (1) ◽  
pp. 57-81 ◽  
Author(s):  
John Daniel Eshleman ◽  
Bradley P. Lawson

SYNOPSIS Extant literature finds mixed evidence on the association between audit market concentration and audit fees. We re-examine this issue using a large sample of U.S. audit clients covering 90 metropolitan statistical areas (MSAs) spanning 2000–2013. We find that audit market concentration is associated with significantly higher audit fees, consistent with the concerns of regulators and managers. We also find that increases in audit market concentration are associated with fewer initial engagement fee discounts (i.e., reduced lowballing), particularly for non-Big 4 clients. We reconcile our findings with those of prior research and find that our divergent findings are attributable to controls for MSA fixed effects. In supplemental analyses, we find that audit market concentration is associated with higher audit quality. We also find that concentration is associated with higher audit quality for first-year engagements, but only if the auditor does not lowball on the engagement. Our results are relevant to the ongoing debate regarding the consequences of increased concentration within the U.S. audit market (GAO 2003, 2008). JEL Classifications: M41; M42; L13.


2018 ◽  
Vol 41 (3) ◽  
pp. 542-562 ◽  
Author(s):  
Meilin Ma ◽  
Tina L. Saitone ◽  
Richard J. Volpe ◽  
Richard J. Sexton ◽  
Michelle Saksena

Author(s):  
R. D. Heidenreich

This program has been organized by the EMSA to commensurate the 50th anniversary of the experimental verification of the wave nature of the electron. Davisson and Germer in the U.S. and Thomson and Reid in Britian accomplished this at about the same time. Their findings were published in Nature in 1927 by mutual agreement since their independent efforts had led to the same conclusion at about the same time. In 1937 Davisson and Thomson shared the Nobel Prize in physics for demonstrating the wave nature of the electron deduced in 1924 by Louis de Broglie.The Davisson experiments (1921-1927) were concerned with the angular distribution of secondary electron emission from nickel surfaces produced by 150 volt primary electrons. The motivation was the effect of secondary emission on the characteristics of vacuum tubes but significant deviations from the results expected for a corpuscular electron led to a diffraction interpretation suggested by Elasser in 1925.


Author(s):  
Eugene J. Amaral

Examination of sand grain surfaces from early Paleozoic sandstones by electron microscopy reveals a variety of secondary effects caused by rock-forming processes after final deposition of the sand. Detailed studies were conducted on both coarse (≥0.71mm) and fine (=0.25mm) fractions of St. Peter Sandstone, a widespread sand deposit underlying much of the U.S. Central Interior and used in the glass industry because of its remarkably high silica purity.The very friable sandstone was disaggregated and sieved to obtain the two size fractions, and then cleaned by boiling in HCl to remove any iron impurities and rinsed in distilled water. The sand grains were then partially embedded by sprinkling them onto a glass slide coated with a thin tacky layer of latex. Direct platinum shadowed carbon replicas were made of the exposed sand grain surfaces, and were separated by dissolution of the silica in HF acid.


Author(s):  
A. Toledo ◽  
G. Stoelk ◽  
M. Yussman ◽  
R.P. Apkarian

Today it is estimated that one of every three women in the U.S. will have problems achieving pregnancy. 20-30% of these women will have some form of oviductal problems as the etiology of their infertility. Chronically damaged oviducts present problems with loss of both ciliary and microvillar epithelial cell surfaces. Estradiol is known to influence cyclic patterns in secretory cell microvilli and tubal ciliogenesis, The purpose of this study was to assess whether estrogen therapy could stimulate ciliogenesis in chronically damaged human fallopian tubes.Tissues from large hydrosalpinges were obtained from six women undergoing tuboplastic repair while in the early proliferative phase of fheir menstrual cycle. In each case the damaged tissue was rinsed in heparinized Ringers-lactate and quartered.


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