Field experiments were laid down in 1971 on two permanent pasture sites on the Screen soil association in Co. Wexford. The plots were treated with sulphur-free fertilisers and harvested eight times ...during 1971 and 1972. In February 1973, sulphur was applied as gypsum. A dry-matter yield increase was first obtained during the second harvest in July 1973, and beneficial effects were visible from June 1973 onwards. These effects persisted during the third and fourth harvests of 1973. Gypsum increased dry-matter yields by 15% at one site and by 12% at the other for the total of three harvests from June 1973 onwards.
For the miniaturisation of resonant converters the resonant inductor has been integrated into the transformer by using the leakage inductance as the inductor. A new method of adjusting the leakage ...inductance for planar transformers with integrated windings by using an additional layer of low permeable magnetic material is introduced. The leakage inductance of planar transformers with integrated windings can be adjusted very precisely and reproducibly.
The second edition of An Introduction to Efficiency and Productivity Analysis is designed to be a general introduction for those who wish to study efficiency and productivity analysis. The book ...provides an accessible, well-written introduction to the four principal methods involved: econometric estimation of average response models, index numbers, data envelopment analysis (DEA), and stochastic frontier analysis (SFA). For each method, a detailed introduction to the basic concepts is presented, numerical examples are provided, and some of the more important extensions to the basic methods are discussed. Of special interest is the systematic use of detailed empirical applications using real-world data throughout the book. In recent years, there have been a number of excellent advance-level books published on performance measurement. This book, however, is the first systematic survey of performance measurement with the express purpose of introducing the field to a wide audience of students, researchers, and practitioners. Indeed, the 2nd Edition maintains its uniqueness: (1) It is a well-written introduction to the field. (2) It outlines, discusses and compares the four principal methods for efficiency and productivity analysis in a well-motivated presentation. (3) It provides detailed advice on computer programs that can be used to implement these performance measurement methods. The book contains computer instructions and output listings for the SHAZAM, LIMDEP, TFPIP, DEAP and FRONTIER computer programs. More extensive listings of data and computer instruction files are available on the book's website: (www.uq.edu.au/economics/cepa/crob2005).
In this paper a sample of UK mechanical engineering companies is ranked by a number of one-factor and two-factor efficiency measures. Of the one-factor measures, profitability proves to be most ...closely related to the more theoretically correct two-factor measures. Whilst this empirical finding supports a priori reasoning, care must be taken with its interpretation. For when profitability differences between companies do not reflect efficiency differences, conventional two-factor efficiency measures will themselves be unreliable indicators of true efficiency.
How the Irish Became Urban O’Donnell, Edward T.
Journal of Urban History,
01/1999, Letnik:
25, Številka:
2
Book Review, Journal Article
Recenzirano
O'Donnell reviews "How the Irish Became White" by Noel Ignatiev, "What Parish Are You From? A Chicago Irish Community and Race Relations" by Eileen M. McMahon, "The Boston Irish: A Political History" ...by Thomas H. O'Connor and "The New York Irish" edited by Ronald H. Bayor and Timothy J. Meagher.
In this review, antimicrobials from a range of plant, animal, and microbial sources are reviewed along with their potential applications in food systems. Chemical and biochemical antimicrobial ...compounds derived from these natural sources and their activity against a range of pathogenic and spoilage microorganisms pertinent to food, together with their effects on food organoleptic properties, are outlined. Factors influencing the antimicrobial activity of such agents are discussed including extraction methods, molecular weight, and agent origin. These issues are considered in conjunction with the latest developments in the quantification of the minimum inhibitory (and noninhibitory) concentration of antimicrobials and/or their components. Natural antimicrobials can be used alone or in combination with other novel preservation technologies to facilitate the replacement of traditional approaches. Research priorities and future trends focusing on the impact of product formulation, intrinsic product parameters, and extrinsic storage parameters on the design of efficient food preservation systems are also presented.
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