Search results

Considering pollution problems and the energy crisis today, investigations have been concentrated on lowering the concentration of toxic components in combustion products and decreasing fossil fuel consumption by using renewable alternative fuels. In this work, the effect of ethanol addition to gasoline on the exhaust emissions of a spark ignition engine at various speeds was established. Ethanol was extracted from groundnut seeds using fermentation method. Gasoline was blended with 20 - 80% of the extracted ethanol in an interval of 20%. Results of the engine test indicated that using ethanol-gasoline blended fuels decreased carbon monoxide (CO) and hydrocarbon (HC) emissions as a result of the lean- burn effects caused by the ethanol, and the carbon dioxide (CO₂) emission increased because of a near complete combustion. Finally, the results showed that blending ethanol in a proportion of 40% with gasoline can be used as a supplementary fuel in modern spark ignition engines as it is expected that the engine performs at its optimum in terms of air toxic pollutants reduction, by virtue of that mix.

This study aims to develop a framework that enables the identification of sustainability factors from industry-specific environmental issues, and it proposes that these factors, in turn, can influence the corporate environmental performance (CEP) of firms in such an industry. It also validates the factor identification aspect of the framework.

The paper starts by reviewing relevant literature extensively and then developing an issue-based environmental sustainability framework to highlight the structural relationship of industry-specific sustainability factors with CEP. By involving 131 participants from academics in Niger Delta, the paper uses exploratory factor analysis techniques to reduce industry-specific sustainability factors from several environmental and socio-economic issues in the Nigerian oil and gas (O&G) industry.

Environmental risk originates from business environmental issues, and it triggers community reaction, which impacts negatively on corporate image. The nature of firm’s strategic responsiveness to these factors determines CEP.

The study draws from the perspectives of academics on environmental issues in Niger Delta to validate the factor identification aspect of the framework. The views of other stakeholders are not included, and hence, it should be applied with caution.

Useful in identifying and managing industry-specific environmental issues, and thus, achieving some sustainable development objectives.

Although most previous studies have focused on generic CEP drivers, this study proposes sustainability factors that can originate from industry-specific environmental issues as crucial drivers of CEP in such an industry. It provides empirical evidence of such credible sustainability factors emerging from the Nigerian O&G industry’s environmental issues.

The purpose of the paper was to investigate the role of fiscal incentives in driving foreign direct investment (FDI) inflows into the Ghanaian economy based on data from 1975 to 2017 with the Eclectic paradigm as the theoretical basis. FDI inflows was the dependent variable whiles trade openness, corporate tax rate, exchange rate and market size were the independent variables with corporate tax rate as the main explanatory variable of interest.

The autoregressive distributed lag (ARDL) bounds test technique was employed to investigate Cointegration in the model. The results showed the presence of cointegration among the variables.

The results revealed that corporate tax rates have a significant negative impact on FDI inflows into the Ghanaian economy in the long run and significant positive impact on FDI inflows in the short run. In the context of Ghana, the positive short-run relationship observed is attributed to the lag effect of tax policy on FDI inflows.

One obvious limitation of the research is that, it does not identify the specific foreign businesses that are more deserving of a low corporate rate and to what extent can that boost FDI inflows in Ghana. Another limitation is that the data analyzed in the paper is exclusively for Ghana and the findings may not be generalized for other countries.

Based on the research findings, it is recommended that the Ghana Revenue Service (GRA) restructures the corporate tax regime in the country to deal with the policy lapses. It is also recommended that low corporate rates should be maintained especially in respect of foreign companies that are into the production of goods and services for which indigenous companies in Ghana have a comparative disadvantage in order to drive FDI into the Ghanaian economy.

This paper is unique for providing up to date and dynamic insights into the tax incentive and FDI nexus in the Ghanaian context.

Following Airbnb’s recent turn to the luxury market, this paper aims to explore how Airbnb hosts construct meanings of luxury as enacted in their hosting practices.

Semi-structured interviews with 46 Airbnb hosts were undertaken using purposing sampling.

Study findings reveal that social and personal meanings of luxury manifest in host practice, with “home feeling” representing the epicentre of the luxury peer-to-peer (P2P) accommodation experience.

Although this study draws from host views, it represents a first attempt to empirically examine perceptions and applications of luxury within P2P accommodation. The study provides a conceptual framework which may serve as a point of departure for further research into which luxury service dimensions guests value.

The findings of the study carry implications to the wider hospitality context. Specifically, hospitality practitioners need to reconceptualize luxury hospitality provision to promote a “homotel” accommodation model which highlights the offering of physical and social luxury dimensions in addition to elements of personalized service and home-like hedonic benefits.

The study offers a conceptual framework of the luxury P2P accommodation servicescape, which identifies two distinct luxury offerings that may be informative to both P2P accommodation providers and hospitality practitioners.

This study aims to investigate the role of institutional and stakeholder interaction in the development of integrated reporting policy by the International Integrated Reporting Council (IIRC). It helps advance the theory of integrated reporting and offers insights into its fundamental concepts and relevant issues.

A flexible pattern-matching qualitative research approach is used and an analytical framework of integrated reporting historical foundations and conceptual background is developed. An IIRC case analysis is conducted by using a chronological content analysis of the International Integrated Reporting Framework and related initiatives and publications for integrated reporting policy pronouncements.

Institutional and stakeholder pressures within both the organization’s macro and micro contexts have played an effective role in transforming corporate reporting practices. In an integrated reporting context, institutional forces of normative and mimetic isomorphism seem to have more influence on organizations than coercive pressures, where stakeholder pressures with limited official power derive influence from their legitimacy while urgency is evidently implied. Findings indicate that integrated reporting policy has emerged analogously with the institutional environment and stakeholders’ expectations. The distinct nature of integrated reporting has caused a paradigm shift from silo thinking of wealth creation to integrated thinking of value creation.

This is an exploratory study that does not consider different prominent integrated reporting models. It has important implications for policymakers in articulating the integration of financial and nonfinancial metrics for reporting overall corporate performance. It can help academics build on integrated reporting foundations for conducting future research and assist practitioners in operationalizing integrated reporting policy into practice. Moreover, it has potential prospects for international business in developing integrated reporting policies and strategies aimed at creating mutual value in specific international contexts.

Integrated reporting represents a new internationally developing reporting trend with distinct reporting features and foundations for value creation. The study provides considerable addition to emerging research into the growing awareness of integrated reporting policy, develops a conceptual model of institutional and stakeholder interaction and theorizes on such interplay, identifies the potential influences under which integrated reporting is likely to occur and offers key insights into integrated reporting policy. Hence, it contributes to the ongoing global challenge of promoting the reporting transition to integrated reporting and its perceived future endorsement.

This paper aims to understand the outlet temperature distribution of the combustor of a high-temperature, high-speed heat-airflow simulation system.

The paper uses numerical simulation to study the temperature distribution of the combustor of a high-temperature, high-speed heat-airflow simulation system. First, the geometrical model of the combustor and the combustion model of the fuel are established. Then, the combustion of fuel in the combustor is simulated by using FLUENT under various conditions. Finally, the results are obtained.

The paper found three conclusions: when the actual fuel–gas ratio is equal to the theoretical fuel–gas ratio, the temperature in the combustor of the high-temperature, high-speed heat-airflow simulation system (HTSAS) can reach its highest and the distribution is the most uniform. Although increases in the total temperature of the inlet air can increase the highest temperature in the combustor of the HTSAS, the average temperature of the combustor outlet will decrease. At the same time, it will lead to an uneven temperature distribution of the combustor outlet. When the spray angle of the kerosene droplet is at 30 degrees, the outlet temperature field of the combustor is more uniform.

The paper presents a method to analyze the combustion performance of fuel and the gas temperature distribution in the combustor. The results will lay the foundation for the gas temperature control of a combustor.

Measuring texture parameters are time consuming and expensive; it is necessary to develop an efficient and rapid method to evaluate them. Image analysis can be a useful tool. The purpose of this paper is to predict texture parameters in different beef cuts applying image analysis techniques.

Samples were analyzed by scanning electron microscopy. Texture parameters were analyzed by instrumental, image analysis techniques and by Warner–Bratzler shear force.

Significant differences (p<0.05) were obtained for image and instrumental texture features. Higher amount of porous were observed in freeze dried samples of beef cuts from Gluteus Medius and semintendinosus muscles. A linear trend with a linear correlation was applied for instrumental and image texture. High correlations were found between image and instrumental texture features. Instrumental parameters showed a positive correlation with image texture feature.

This research suggests that the addition of image texture features improves the accuracy to predict texture parameter. The prediction of quality parameters can be performed easily with a computer by recognizing attributes within an image.

Canadian HIV/AIDS researchers, service providers and policy-makers are faced with new challenges of providing effective and inclusive care that meets the needs of the changing populations infected with and affected by HIV. Since 2005 immigrants and refugees from ethno-racial minority communities have comprised close to 20 percent of all new HIV infections in Canada. Anecdotes shared by PLWHAs and service providers indicated that mental health challenges faced by newcomer PLWHAs was a priority concern for HIV prevention, treatment and care. This paper reports on the results of an exploratory study, which examined the complex factors that influence the mental health of immigrants and refugees living with HIV/AIDS (IR-PLWHAs).

This exploratory study is informed by a critical social science paradigm, which acknowledges that the everyday reality is shaped by interlocking systems of social processes and unequal power relations. The paper used a qualitative interpretative design and focus groups to explore the intersecting effects of living with HIV/AIDS, migration and settlement, and HIV stigma and discrimination on the mental health of IR-PLWHAs.

The paper found that in addition to social and economic marginalization, IR-PLWHAs experienced multiple stressors associated with their HIV status: neurocognitive and physical impairments, HIV stigma and discrimination, and fear of deportation. The paper also found that the experiences of stigma and discrimination among IR-PLWHAs were complex and contextual, closely linked to their social positions defined by the intersecting dimensions of race, class, gender, citizenship, sexualities, body norms, and HIV status. The paper concludes that effective HIV prevention, treatment and care, and mental health promotion in newcomer and ethno-racial minority communities must consider the bio-psycho-social connections of different stressors and the interlocking systems of oppression faced by IR-PLWHAs.

This study was exploratory in nature with a small number of participants who were recruited through AIDS organizations in Toronto. Consequently, the recruitment strategy may reach only those who were connected to the AIDS organizations. The paper believes that IR-PLWHAs who were not connected to the AIDS organizations might experience even more social exclusion and marginalization. These factors may limit the transferability of this study.

This is the first study that explores the bio-psycho-social connections and intersecting determinants of mental health among immigrants and refugees living with HIV and AIDS in Canada. The results of this study contribute to cross-sector dialogue among practitioners and researchers in the HIV/AIDS, mental health, and immigration and settlement services sectors.

This substantial article begins with an examination of two important grounds of discrimination: sex discrimination governed by the Sex Discrimination Act 1975 (and the related Equal Pay Act 1970) and racial discrimination under the Race Relations Act 1976. Discussion is confined to the right not to be discriminated against and covers the detailed provisions of these acts in this respect, judicial precedents and important cases heard not only in the British courts but in the European Court of Justice. The third section of the article is about discrimination in connection with trade union membership and activities governed by the Employment Protection (Consolidation) Act 1978.

The Sex Discrimination Act 1975 and the related Equal Pay Act 1970, and the Race Relations Act 1976 have not been consolidated by the Employment Protection (Consolidation) Act 1978. Each of the Acts treats sex and race discrimination in a general and broad sense. Both make similar provisions in connection with various aspects of discrimination in employment. Since one act is inspired by the other, the judicial precedent in sex discrimination cases will normally be followed in racial discrimination cases and vice versa. Both Acts are outlined and the grounds that constitute discrimination discussed as well as permissible discrimination. Enforcement of the Acts and liability is detailed. Discrimination in connection with trade union membership and activities is also examined. The right not to have action short of dismissal taken against the employee and remedies for action short of dismissal are discussed.