878 research outputs found
Classifying generalized Howell designs
No full textPublisher Copyright: © The Author(s) 2025.A t-GHDk(s,v;λ) generalized Howell design is an s×s array, each cell of which is either empty or contains a k-subset of elements of some set X of size v such that (i) each element of X appears exactly once in each row and in each column and (ii) no t-subset of elements from X appears in more than λ cells. Computer-aided classification of such designs is here considered in the framework of permutation codes with specific properties. Among other things, it is shown that a 2-GHD3(7,18;1) exists and is unique; this settles the existence problem for 2-GHD3(n+1,3n;1).Peer reviewe
Impacts of Migration and Remittances on Ethnic Income Inequality in Rural China
No full textMigration is often viewed as the best option for poor rural households to exit out of poverty, although the distributional effects of migrants' remittances tend to be ambiguous in the literature. Given that increasing income inequality is a major concern and policy issue, this paper examines the impacts of migration and migrants' remittances on income inequality in China's rural minority areas using recent proprietary household data. Treating migrants' remittances as a potential substitute for income, the results reveal that migration significantly boosts income for all ethnic groups, although the returns to ethnic minority households tend to be less than for Han households. Decomposition analyses further reveal that migration increases inequality between ethnic groups despite reducing spatial inequality. These countervailing effects imply that the continual transfer of rural urban migrants will likely lead to spatial convergence despite reinforcing ethnic inequalities in rural minority areas. Importantly, the percentage contribution of ethnic inequality to total inequality is larger than that of spatial inequality across sampled rural locations, thus highlighting the fact that the ethnic dimension is an important, yet often overlooked component of inequality in China. (C) 2017 Elsevier Ltd. All rights reserved.School of Economics at Peking UniversitySSCIARTICLE,SI200-2119
Picking 'winners' in China: Do subsidies matter for indigenous innovation and firm productivity?
No full textThis paper examines the effects of public subsidies across several dimensions of the innovation process and the implications for productivity. As an identification strategy, panel data is used to estimate a structural innovation model that controls for unobserved heterogeneity combined with matching techniques that help ensure comparability between subsidized and non-subsidized firms. The findings reveal that public subsidies reduce firms' economic performance in lower and higher technology industries despite promoting indigenous innovation in the higher technology industries. Policymakers may tolerate lower average efficiency if they expect that some of the state-backed firms will eventually become successful innovators that go on to generate significantly large social welfare payoffs. Although the findings do not support such an expectation, thus bringing into question whether the social payoff from China's so-called picking 'winners' strategy justifies the cost.School of Economics at Peking University; Natural Science Foundation of China [71603009]SSCIARTICLE154-1654
Firm R&D, innovation and easing financial constraints in China: Does corporate tax reform matter?
No full textThis paper studies the relationship between firms' innovation activities, financial constraints and corporate tax reform in China. A firm-level proxy for financial constraints is derived using cash-flow analysis and subsequently linked to various innovation activities of the firm. As an identification strategy, difference in-differences with exact matching is employed to study whether a reduction in the corporate tax burden via China's 2004 value-added tax (VAT) reform influences firms' innovation activities given they face increasing financial constraints. The results reveal that low access to liquidity in the private sector has a persistent negative effect on firms' innovation activities and reduces the innovation success for more R&D intensive firms. Given increasing financial constraints, a reduction in private-sector firms' corporate tax burden spurs new product and process sales despite failing to affect either their decision to pursue R&D or the amount to invest. The findings suggest that easing financial constraints alone cannot correct the market failure caused by underinvestment in China's private sector. (C) 2016 Elsevier B.V. All rights reserved.Natural Science Foundation of China [71603009]; School of Economics at Peking [email protected]
β-diversity of deep-sea holothurians and asteroids along a bathymetric gradient (NE Atlantic)
No full textMeasuring and understanding patterns of ?-diversity remain major challenges in community ecology. Recently, ?-diversity has been shown to consist of 2 distinct components: (1) spatial turnover and (2) species loss leading to nestedness. Both components structure deep-sea macrofaunal assemblages but vary in importance among taxa and ocean basins and with energy availability. Here, we present the first evidence for turnover and nestedness along a bathymetric gradient in 2 major megafaunal taxa, holothurians and asteroids. Turnover is the dominant component of ?-diversity throughout bathyal and abyssal zones in both taxa, despite major differences in ?-diversity and trophic composition. High spatial turnover suggests a role for evolutionary adaptation to environmental circumstances within depth bands. This pattern differs fundamentally from those in some macrofaunal groups in low-energy environments where abyssal nestedness is high and diversity low, with diversity maintained partly by source-sink dynamics
Render / An Apocalypse
No full textRebecca Gayle Howell is the author of Render /An Apocalypse (Cleveland State University Poetry Center, 2013), which was selected by Nick Flynn for the Cleveland State University Poetry Center First Book Prize and was a 2014 finalist for ForeWord Review’s Book of the Year. She is also the translator of Amal al-Jubouri’s Hagar Before the Occupation/Hagar After the Occupation (Alice James Books, 2011). Among her awards are two fellowships from the Fine Arts Work Center and a Pushcart Prize. Native to Kentucky, Howell is the poetry editor at Oxford American.
“To enter into these poems one must be fully committed, as the poet is, to seeing this world as it is, to staying with it, moment by moment, day by day. Yet these poems hold a dark promise: this is how you can do it, but you must be fully engaged, which means you must be fully awake, you must wake up inside it. As we proceed, the how-to of the beginning poems subtly transform, as the animals (or, more specifically, the livestock) we are engaging begin to, more and more, become part of us, literally and figuratively we enter inside of that which we devour.” –Nick Flynn
“This is the book you want with you in the cellar when the tornado is upstairs taking your house and your farm. It’s the book you want in the bomb shelter, and in the stalled car, in the kitchen waiting for the kids to come home, in the library when the library books are burned. Its instructions are clear and urgent. Rebecca Gayle Howell has pressed her face to the face of the actual animal world. She remembers everything we have forgotten. Read this! It’ s not too late. We can start over from right here and right now.” –Marie Howe
“In every one of these haunting and hungry poems, Howell draws a map for how to enter the heat and dew of the human being, naked and facing the natural world, desperate to feel. I did not realize while reading Render how deeply I was handing everything over.” –Nikky Finney
More Information:
Rebecca Gayle Howell Website
Cutbank
The Rumpus
Oxford Americanhttps://engagedscholarship.csuohio.edu/clpc_bks/1063/thumbnail.jp
[Photograph 2012.201.B0073.0621]
No full textPhotograph used for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma State's Jason Manuel fires over the hands of SMU's Kevin Lewis.
[Photograph 2012.201.B0329.0269]
No full textPhotograph used for a story in the Daily Oklahoman newspaper. Caption: "Heritage Hall's Steve Killebrew returns a backhand to Cascia Hall's Jason Hill.
Close Quarters
No full textPhotograph used for a story in the Daily Oklahoman newspaper. Caption: "Del City's Jason Davis squeezes a pass between Putnam City defenders Travis DeGrate and Andy Erwin (23) during Tuesday night's Class 5A clash at Putnam City High School.
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