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11 – 20 of over 11000
Article
Publication date: 1 January 1986

J. Cairns, N. Jennett and P.J. Sloane

Since the appearance of Simon Rottenberg's seminal paper on the baseball players' labour market in the Journal of Political Economy (1956), the literature on the economics of…

3907

Abstract

Since the appearance of Simon Rottenberg's seminal paper on the baseball players' labour market in the Journal of Political Economy (1956), the literature on the economics of professional team sports has increased rapidly, fuelled by major changes in the restrictive rules which had pervaded these sports, themselves a consequence of battles in the courts and the collective bargaining arena. These changes have not been limited to North America, to which most of the literature relates, but also apply to Western Europe and Australia in particular. This monograph surveys this literature covering those various parts of the world in order to draw out both theoretical and empirical aspects. However, to argue that the existence of what is now an extensive literature “justifies” such a survey on professional team sports clearly begs a number of questions. Justification can be found in at least two major aspects.

Details

Journal of Economic Studies, vol. 13 no. 1
Type: Research Article
ISSN: 0144-3585

Article
Publication date: 25 February 2014

Huansheng Ning and Weishi Chen

– Bird strike risk (BSR) evaluation is a significant part of the avian radar system worldwide installed and operated at airports. The paper aims to discuss these issues.

1144

Abstract

Purpose

Bird strike risk (BSR) evaluation is a significant part of the avian radar system worldwide installed and operated at airports. The paper aims to discuss these issues.

Design/methodology/approach

This paper proposed a method using the real-time avian radar data to evaluate BSR with the estimations of bird strike probability and severity. The probability estimation model considered the attributes of the relative positions of the flock and the runway, the altitude of the flock and the aircraft, the flight path of the aircraft, and the ability of the bird species to avoid collision. The severity was estimated by the combination of the Delphi method and the analytic hierarchy process (AHP), called DAHP, which took full advantage of the expert knowledge and quantitative calculation.

Findings

The model was tested successfully on the simulated data at Beijing Capital International Airport (BCIA) with three runways and real data at Beihai Fucheng Airport (BFA) with one runway.

Practical implications

The BSR evaluation model was specifically designed for the airports with avian radars. It enabled the airport managers to objectively evaluate the risk in real time and to take effective measures.

Originality/value

The proposed BSR evaluation model was constructed with the real-time features of birds and aircraft based on the DAHP framework, providing scientific guidance for aviation safety and environmental management at the airport.

Details

Aircraft Engineering and Aerospace Technology: An International Journal, vol. 86 no. 2
Type: Research Article
ISSN: 0002-2667

Keywords

Article
Publication date: 1 February 1901

At a recent inquest upon the body of a woman who was alleged to have died as the result of taking certain drugs for an improper purpose, one of the witnesses described himself as…

Abstract

At a recent inquest upon the body of a woman who was alleged to have died as the result of taking certain drugs for an improper purpose, one of the witnesses described himself as “an analyst and manufacturing chemist,” but when asked by the coroner what qualifications he had, he replied : “I have no qualifications whatever. What I know I learned from my father, who was a well‐known ‘F.C.S.’” Comment on the “F.C.S.” is needless.

Details

British Food Journal, vol. 3 no. 2
Type: Research Article
ISSN: 0007-070X

Article
Publication date: 14 October 2019

Bartholemew Kenner, Dayton M. Lambert, Carlos Omar Trejo-Pech, Jada M. Thompson and Thomas Gill

The purpose of this paper is to determine the stochastic net present value (NPV) of a model smallholder poultry operation in Rwanda under production and market uncertainty.

Abstract

Purpose

The purpose of this paper is to determine the stochastic net present value (NPV) of a model smallholder poultry operation in Rwanda under production and market uncertainty.

Design/methodology/approach

A discounted cash flow calculator was used to determine the NPV of operator investments and operating cash flows, including time, materials and capital. Broiler production data, market prices and variable input costs were collected from 125 smallholder operations in the Musanze District, Rwanda. These data were combined with a historical price index tracking the inflation rate of Rwanda’s currency. Policies including overstocking, technical support repayment scheduling, selling broilers at a spot market price, using marketing contracts and selling poultry manure were compared using non-parametric paired comparisons and stochastic dominance.

Findings

Risk-neutral and risk-averse producers would prefer overstocking, delaying repayment of technical support services and selling manure to status quo operational policy. No differences were observed between the option to sell birds at spot market prices or through contracts.

Research limitations/implications

This analysis demonstrates how individual managerial or an intervention in smallholder broiler production affects financial performance.

Practical implications

To mitigate risk associated with this novel enterprise, producers should consider overstocking birds. If local markets for manure were developed, the risks faced by new or beginning poultry operators could be mitigated.

Originality/value

A stochastic, discounted cash flow model calculator was used to determine the NPV and discounted payback period of operator investments and operating cash flows, including time, materials and capital.

Details

Journal of Agribusiness in Developing and Emerging Economies, vol. 9 no. 5
Type: Research Article
ISSN: 2044-0839

Keywords

Open Access
Article
Publication date: 30 June 2007

Young-Tae Chang and Paul T.W. Lee

Port competition attracted much scholarly attention in Northwest Europe during the 1980s. Following the rise of powerful economies in East Asia, particularly during the 1980s and…

Abstract

Port competition attracted much scholarly attention in Northwest Europe during the 1980s. Following the rise of powerful economies in East Asia, particularly during the 1980s and 1990s, port competition has become an important phenomenon with the top five container ports in the world being located in the region. This paper aims to overview major port competition issues and outlines and analyzes the main alternative methodologies that researchers have employed to address them, referring to 70 items, mostly papers but including a few books and reports

Details

Journal of International Logistics and Trade, vol. 5 no. 1
Type: Research Article
ISSN: 1738-2122

Keywords

Book part
Publication date: 26 November 2018

Joyce S. Osland, Ming Li, Martha Petrone and Mark E. Mendenhall

This paper summarizes the findings of the empirical papers in this volume and outlines future research directions for global leadership in general. We summarize the state of…

Abstract

This paper summarizes the findings of the empirical papers in this volume and outlines future research directions for global leadership in general. We summarize the state of global leadership development in universities and recommend design criteria for these efforts. Given the popularity of study abroad as an integral component in many global leadership programs, we highlight common challenges for study abroad programs and the importance of taking an organization development approach. We conclude with future directions for global leadership development research in university settings, most of which emerged from the featured papers on this topic in this volume of Advances in Global Leadership. It is our hope that this chapter serves as a primer for both university program directors and researchers.

Article
Publication date: 1 September 1948

In Somerset samples of all kinds submitted and examined amounted to 1,880. Out of these, 1,666 were taken under the Food and Drugs Act, 1898, and the Statutory Rules and Orders…

Abstract

In Somerset samples of all kinds submitted and examined amounted to 1,880. Out of these, 1,666 were taken under the Food and Drugs Act, 1898, and the Statutory Rules and Orders issued by the Ministries of Health and Food and the Public Health Acts. It may be observed, though the fact is but too well known to. all those who are officially concerned with the administration of the Acts referred to above, that the number of Rules and Regulations is now very large. This number, by the very nature of the conditions that gave rise to them, will certainly increase. It follows that though the number of samples submitted may not increase, the work in connection therewith will certainly do so. Thus out of forty‐one samples described as either adulterated or incorrect, about half were incorrectly labelled. If this were only a matter of name and address the error or omission could be easily put right, but claims may be made by the vendors that cannot be substantiated. This is left to the Public Analyst to decide. Thus: “Should not bear a reference to scrofula”; or “‘Double strength’ has no meaning”; or “Should not be described as a ‘Cocktail’.” The Public Analyst has the double duty of correcting all sorts of verbal inaccuracies or exaggerations, and carrying out an analysis, often of a most complex description, and then interpreting the results of that analysis. Out of 689 milks examined, 72, or 10·4 per cent, were adulterated, against only 4 per cent in 1946. “This apparent increase in adulteration is probably due to the fact that a large number of samples were taken as a result of complaints received from milk factories.” Cow fat content was in some cases directly traceable to the large proportion of Friesian cows in the herd. The farmers were recommended to introduce into their herds cows of a breed giving milk with a higher proportion of fat. The old fault of bad mixing was responsible for some other prosecutions. Thus 8·67 per cent of fat at the top of the churn and 2·70 at the bottom at the time of delivery. The Report observes that a substance called Ground Almond Substitute should correspond to some extent with ground almonds. This remark was suggested as a result of examining a sample of the alleged substitute. It had a slight odour and flavour of almonds, but no further resemblance to almonds. The 4·2 per cent of fixed oil was mainly derived from the wheat—85 per cent—and the soya flour—15 per cent—of which it was composed. As flour costs 3d. a lb., and soya flour 10½d. a lb., it is pointed out that the cost of this mixture would be 4½d. a lb. It was sold for 2s. a lb. We are glad to note that the magistrate's view of the swindle was a £5 fine. As it might be used raw for cake icing or marzipan, the result of ingesting this rubbish would probably bring about digestive troubles in young children.

Details

British Food Journal, vol. 50 no. 9
Type: Research Article
ISSN: 0007-070X

Article
Publication date: 14 February 2022

Yile Zhang, Yadong Zhou and Youchao Sun

The purpose of this paper is to analyze the bird impact damage of fuselage composite stiffened structures by numerical method and to evaluate the damage and the bird impact…

Abstract

Purpose

The purpose of this paper is to analyze the bird impact damage of fuselage composite stiffened structures by numerical method and to evaluate the damage and the bird impact resistance of different structures.

Design/methodology/approach

The deformation and damage of composite stiffened plates during bird impact are numerically analyzed by the explicit finite element software LS-DYNA. A comparative study on the numerical calculation results was conducted by using SPH (Smoothed Particle Hydrodynamics)-FEM (Finite Element Method) modeling and simulation. First, the I-shaped, T-shaped, straight stiffened plates and unstiffened plate were designed. Second, the accuracy of the bird model was verified and further used to evaluate bird strikes on composite stiffened plate. Third, the results of damage modes as well as displacements of the stiffened plates were compared.

Findings

The stiffeners can increase the local stiffness of the composite panel, which can effectively inhibit the bird’s movement along the impact direction. Adding stiffeners can change the panel matrix tension damage from global distribution to local distribution mode; however, the impact damage distribution and the ability to inhibit damage propagation can differ for different stiffened panels. Especially, the I-stiffened panel exhibits a better anti-bird strike performance.

Originality/value

The analysis of geometric parameters of structural components by numerical methods can reduce the cost of the design phase and has been widely used in aircraft design. The present study evaluated the bird impact damage of composite stiffened plates with different structures, which provides a guideline for selecting the stiffened plate structure in the fuselage skin.

Details

Aircraft Engineering and Aerospace Technology, vol. 94 no. 6
Type: Research Article
ISSN: 1748-8842

Keywords

Book part
Publication date: 22 September 2015

Monica L. Smith

This paper examines the conditions under which ancient peoples might have developed a concept of “sustainability,” and concludes that long-term resource management practices would…

Abstract

Purpose

This paper examines the conditions under which ancient peoples might have developed a concept of “sustainability,” and concludes that long-term resource management practices would not have been articulated prior to the development of the first cities starting c. 6,000 years ago.

Methodology/approach

Using biological concepts of population density and niche-construction theory, cities are identified as the first places where pressures on resources might have triggered concerns for sustainability. Nonetheless, urban centers also provided ample opportunities for individuals and households to continue the same ad hoc foraging strategies that had facilitated human survival in prior eras.

Social implications

The implementation of a sustainability concept requires two things: individual and institutional motivations to mitigate collective risk over the long term, and accurate measurement devices that can discern subtle changes over time. Neither condition was applicable to the ancient world. Premodern cities provided the first expression of large population sizes in which there were niches of economic and social mutualism, yet individuals and households persisted in age-old approaches to provisioning by opportunistically using urban networks rather than focusing on a collective future.

Originality/value

Archaeological and historical analysis indicates that a focus on “sustainability” is not an innate human behavioral capacity but must be specifically articulated and taught.

Details

Climate Change, Culture, and Economics: Anthropological Investigations
Type: Book
ISBN: 978-1-78560-361-7

Keywords

Article
Publication date: 1 April 1977

The long controversy that has waxed furiously around the implementation of the EEC Directives on the inspection of poultry meat and hygiene standards to be observed in poultry…

Abstract

The long controversy that has waxed furiously around the implementation of the EEC Directives on the inspection of poultry meat and hygiene standards to be observed in poultry slaughterhouses, cutting‐up premises, &c, appears to be resolved at last. (The Prayer lodged against the Regulations when they were formally laid before Parliament just before the summer recess, which meant they would have to be debated when the House reassembled, could have resulted in some delay to the early operative dates, but little chance of the main proposals being changed.) The controversy began as soon as the EEC draft directive was published and has continued from the Directive of 1971 with 1975 amendments. There has been long and painstaking study of problems by the Ministry with all interested parties; enforcement was not the least of these. The expansion and growth of the poultry meat industry in the past decade has been tremendous and the constitution of what is virtually a new service, within the framework of general food inspection, was inevitable. None will question the need for efficient inspection or improved and higher standards of hygiene, but the extent of the

Details

British Food Journal, vol. 79 no. 4
Type: Research Article
ISSN: 0007-070X

11 – 20 of over 11000