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Article
Publication date: 1 June 1984

SP Kochhar and JB Rossell

Oxidative quality of the oil. The average linoleic acid (C18:2, n‐6) content, measured in several suspect oils, was 42% of the total fatty acids. The peroxide values of the oil…

24

Abstract

Oxidative quality of the oil. The average linoleic acid (C18:2, n‐6) content, measured in several suspect oils, was 42% of the total fatty acids. The peroxide values of the oil samples were high (18 to 57 mEq/kg) compared with those of olive oil (9.8 mEq/kg) purchased locally in Spain. The samples were very susceptible to oxidative deterioration, indicating a low content of the natural antioxidants, tocopherols (Vitamin E). The oxidative stabilities of the oils measured by the AOM test were generally low. There are no data available on the concentrations of tocopherols, pro‐oxidant trace metal (eg copper and iron) contents, levels of polyunsaturated fatty acids or hydroxy and epoxy derivatives in the suspect oils.

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Nutrition & Food Science, vol. 84 no. 6
Type: Research Article
ISSN: 0034-6659

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Article
Publication date: 30 August 2024

Wole Akosile, Babangida Tiyatiye, Adebunmi Bojuwoye and Roger Antabe

The purpose of this paper is to explore the impact of media representation on the mental health of Australians of African descent during the COVID-19 pandemic. By analysing the…

34

Abstract

Purpose

The purpose of this paper is to explore the impact of media representation on the mental health of Australians of African descent during the COVID-19 pandemic. By analysing the media coverage of COVID-19 restriction breaches, particularly focusing on individuals from African backgrounds, the study aims to shed light on how racially charged narratives can contribute to emotional distress and exacerbate feelings of alienation within these communities. The findings highlight the detrimental effects of such portrayals, emphasising the need for more responsible and inclusive media reporting to safeguard the mental well-being of culturally and linguistically diverse populations.

Design/methodology/approach

The study employed media content analysis to explore representations of Australians of African origin versus the broader Anglo–Australian population during the COVID-19 pandemic, focusing on racial identity’s impact on news coverage of COVID-19 restriction breaches. Researchers classified and distilled extensive textual content, using a diverse sample from various ethnic-racial backgrounds, with an emphasis on African Australians within the CALD community. Data analysis was conducted using NVivo (version 12) software, following an inductive approach.

Findings

The findings underscore the consistent portrayal of people from African communities as outsiders and the racial profiling they experience in media coverage of significant issues like COVID-19.

Originality/value

There is very limited research that examines the impact of media coverage on African migrants during the COVID-19 pandemic.

Details

International Journal of Migration, Health and Social Care, vol. 20 no. 4
Type: Research Article
ISSN: 1747-9894

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Article
Publication date: 12 March 2020

Benjamin Jansen

Many prior tests of market efficiency, which occurred decades ago, were limited by data and did not employ methodology to correct for leptokurtosis in the stock return…

250

Abstract

Purpose

Many prior tests of market efficiency, which occurred decades ago, were limited by data and did not employ methodology to correct for leptokurtosis in the stock return distribution. Furthermore, these studies did not test many aspects of conditional market efficiency. One aspect of a potential conditional violation of market efficiency is whether stock markets are efficient conditional on the level of stock return.

Design/methodology/approach

This paper uses quantile regressions to control for leptokurtosis in the stock return distribution and simultaneous quantile regressions to test whether markets are efficient conditional on the level of the market return. This paper uses market-level stock return data to bias against finding significant results in the efficiency tests. Furthermore, the author uses data from 1926 through 2018, providing the longest time period to date under which market efficiency is tested.

Findings

This paper presents evidence that the autoregressive coefficient decreases across return levels in stock market indices. The autoregressive coefficient is positive around highly negative returns and negative or insignificant around highly positive returns, which suggests that when stock returns are low they are more likely to continue lower, and when stock returns are high they are more likely to reverse. Results additionally suggest that market efficiency is not time-invariant and that stock markets have become more efficient over the sample period.

Originality/value

This paper extends the literature by finding evidence of a violation of weak-form market efficiency conditional on the level of stock returns. It further extends the literature by finding evidence that the stock market has become more efficient between 1926 and 2018.

Details

Managerial Finance, vol. 46 no. 7
Type: Research Article
ISSN: 0307-4358

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