Search results

1 – 10 of over 3000
Article
Publication date: 12 August 2014

Indranarain Ramlall

The purpose of this paper is to delve into an extensive analysis of different food crops, ranging from bananas, beans, brinjals, cabbages, chillies, creepers, groundnuts, mixed…

Abstract

Purpose

The purpose of this paper is to delve into an extensive analysis of different food crops, ranging from bananas, beans, brinjals, cabbages, chillies, creepers, groundnuts, mixed vegetables, pineapples and tomatoes, over three decades. To maintain an ever-increasing population level, much stress is exerted on the production of food crops. However, till date, very little is known about how climate change is influencing the production of food crops in Mauritius, an upper-income developing country found in the Indian Ocean and highly vulnerable to climate risks.

Design/methodology/approach

Based on the interactions between production of crops, harvest area for crops and weather metrics, a vector autoregressive model (VAR) system is applied comprising production of each crop with their respective harvest area. Weather metrics are then entered into as exogeneous components of the model. The underlying rationale is that weather metrics are not caused by production or harvest area and should thereby be exogeneously treated. Should there be cointegration between the endogenous components, the vector error correction model (VECM) will be used. Diagnostic tests will also be entertained in terms of ensuring the endogeneity states of the presumed variables under investigation. The impact of harvest area on product is plain, as higher the harvest area, the higher is the production. However, a bi-directional causality can also manifest in the case that higher production leads towards lower harvest area in the next period as land is being made to rest to restore its nutrients to enable stable land productivity over time. Other dynamics could also be present. In case cointegration prevails, VECM will be used as the econometric model. The VAR/VECM approach is applied by virtue of the fact that traditional ordinary least squares (OLS) estimation approach will be biased and susceptible to trigger off unreliable results. Recourse is made towards the Johansen and Juselius (1990) technique. The Johansen and Juselius approach is based on the following VAR specification-bivariate VAR methodology. X1,t = A0 + A1,1X1,t – 1 + A1,2X1,t – 2+ […] .+ A1,p X1,tp + A2,1X2,t – 1 + A2,2X2,t – 2+ […] .+ A2,pX2,tp + ßjW + e1,t […] […]..(1) X2,t = B0 + B2,1X2,t – 1 + B2,2X2,t – 2+ […] .+ B2,p X2,tp + B1,1X1,t – 1 + B1,2X2,t – 2+ […] .+ B1,pX2,tp + ajW + e2,t […] […] […](2) X1,t is defined as the food crops production, while X2,t pertains to harvest area under cultivation for a given crop under consideration, both constituting the endogeneous components of the VAR. The exogeneous component is captured by W which consists of the nine aforementioned weather metrics, including the cyclone dummy. The subscript j under equation (1) and (2) captures these nine distinct weather metrics. In essence, the aim of this paper is to develop an econometric-based approach to sieve out the impacts of climate metrics on food crops production in Mauritius over three decades.

Findings

Results show weather metrics do influence the production of crops in Mauritius, with cyclone being particularly harmful for tomatoes, chillies and creepers. Temperature is found to trail behind bearish impacts on tomatoes and cabbages production, but positive impacts in case of bananas, brinjals and pineapples productions, whereas humidity enhances production of beans, creepers and groundnuts. Evidence is found in favour of production being mainly governed by harvest area. Overall, the study points out the need of weather derivatives in view of hedging against crop damages, let alone initiation of adaptation strategies to undermine the adverse effects of climate change.

Originality/value

To the best of the author’s knowledge, no study has been undertaken in Mauritius, let alone developing of an econometric model that properly integrates production, harvest area and weather metrics. Results show weather metrics do influence the production of crops in Mauritius, with cyclone being particularly harmful for tomatoes, chillies and creepers. Temperature is found to trail behind bearish impacts on tomatoes and cabbages production, but positive impacts in case of bananas, brinjals and pineapples productions, whereas humidity enhances production of beans, creepers and groundnuts. Evidence is found in favour of production being mainly governed by harvest area. Overall, the study points out the need of weather derivatives in view of hedging against crop damages, let alone initiation of adaptation strategies to undermine the adverse effects of climate change.

Details

International Journal of Climate Change Strategies and Management, vol. 6 no. 3
Type: Research Article
ISSN: 1756-8692

Keywords

Article
Publication date: 26 July 2021

Álvaro Rodríguez-Sanz, Javier Cano and Beatriz Rubio Fernández

Weather events have a significant impact on airport arrival performance and may cause delays in operations and/or constraints in airport capacity. In Europe, almost half of all…

Abstract

Purpose

Weather events have a significant impact on airport arrival performance and may cause delays in operations and/or constraints in airport capacity. In Europe, almost half of all regulated airport traffic delay is due to adverse weather conditions. Moreover, the closer airports operate to their maximum capacity, the more severe is the impact of a capacity loss due to external events such as weather. Various weather uncertainties occurring during airport operations can significantly delay some arrival processes and cause network-wide effects on the overall air traffic management (ATM) system. Quantifying the impact of weather is, therefore, a key feature to improve the decision-making process that enhances airport performance. It would allow airport operators to identify the relevant weather information needed, and help them decide on the appropriate actions to mitigate the consequences of adverse weather events. Therefore, this research aims to understand and quantify the impact of weather conditions on airport arrival processes, so it can be properly predicted and managed.

Design/methodology/approach

This study presents a methodology to evaluate the impact of adverse weather events on airport arrival performance (delay and throughput) and to define operational thresholds for significant weather conditions. This study uses a Bayesian Network approach to relate weather data from meteorological reports and airport arrival performance data with scheduled and actual movements, as well as arrival delays. This allows us to understand the relationships between weather phenomena and their impacts on arrival delay and throughput. The proposed model also provides us with the values of the explanatory variables (weather events) that lead to certain operational thresholds in the target variables (arrival delay and throughput). This study then presents a quantification of the airport performance with regard to an aggregated weather-performance metric. Specific weather phenomena are categorized through a synthetic index, which aims to quantify weather conditions at a given airport, based on aviation routine meteorological reports. This helps us to manage uncertainty at airport arrival operations by relating index levels with airport performance results.

Findings

The results are computed from a data set of over 750,000 flights on a major European hub and from local weather data during the period 2015–2018. This study combines delay and capacity metrics at different airport operational stages for the arrival process (final approach, taxi-in and in-block). Therefore, the spatial boundary of this study is not only the airport but also its surrounding airspace, to take both the arrival sequencing and metering area and potential holding patterns into consideration.

Originality/value

This study introduces a new approach for modeling causal relationships between airport arrival performance indicators and meteorological events, which can be used to quantify the impact of weather in airport arrival conditions, predict the evolution of airport operational scenarios and support airport decision-making processes.

Details

Aircraft Engineering and Aerospace Technology, vol. 94 no. 1
Type: Research Article
ISSN: 1748-8842

Keywords

Article
Publication date: 22 June 2012

Ethan Watson and Mary C. Funck

Research draws the distinction between noise traders and informed traders. Research also documents market biases in equity returns due to cloud cover, a non‐informational (noise…

2387

Abstract

Purpose

Research draws the distinction between noise traders and informed traders. Research also documents market biases in equity returns due to cloud cover, a non‐informational (noise) event, showing that returns decrease on cloudy days. The purpose of this paper is to investigate the trading behaviour of short‐sellers, who are considered informed traders, conditioning on the level of cloudiness, and find an increase in short selling with the level of cloudiness. Additionally, the paper finds decreases in short selling the three days prior to a cloudy day (or series of cloudy days).

Design/methodology/approach

The authors replicate the weather anomaly in stock returns reported in the literature for the sample period, and then study the trading behaviour of short sellers conditioned on cloud cover. Additionally the authors treat cloud cover as an event and study short selling volume in the pre‐event window.

Findings

The paper finds an increase in short selling with the level of cloudiness. Additionally, the paper finds decreases in short selling, relative to the event day(s), in the three days prior to a cloudy day (or series of cloudy days).

Originality/value

The authors believe that they are the first to document that weather impacts short seller's trading behaviour. The authors argue that the results point towards a behavioural bias.

Details

International Journal of Managerial Finance, vol. 8 no. 3
Type: Research Article
ISSN: 1743-9132

Keywords

Article
Publication date: 28 March 2024

Anna Young-Ferris, Arunima Malik, Victoria Calderbank and Jubin Jacob-John

Avoided emissions refer to greenhouse gas emission reductions that are a result of using a product or are emission removals due to a decision or an action. Although there is no…

Abstract

Purpose

Avoided emissions refer to greenhouse gas emission reductions that are a result of using a product or are emission removals due to a decision or an action. Although there is no uniform standard for calculating avoided emissions, market actors have started referring to avoided emissions as “Scope 4” emissions. By default, making a claim about Scope 4 emissions gives an appearance that this Scope of emissions is a natural extension of the existing and accepted Scope-based emissions accounting framework. The purpose of this study is to explore the implications of this assumed legitimacy.

Design/methodology/approach

Via a desktop review and interviews, we analyse extant Scope 4 company reporting, associated accounting methodologies and the practical implications of Scope 4 claims.

Findings

Upon examination of Scope 4 emissions and their relationship with Scopes 1, 2 and 3 emissions, we highlight a dynamic and interdependent relationship between quantification, commensuration and standardization in emissions accounting. We find that extant Scope 4 assessments do not fit the established framework for Scope-based emissions accounting. In line with literature on the territorializing nature of accounting, we call for caution about Scope 4 claims that are a distraction from the critical work of reducing absolute emissions.

Originality/value

We examine the implications of assumed alignment and borrowed legitimacy of Scope 4 with Scope-based accounting because Scope 4 is not an actual Scope, but a claim to a Scope. This is as an act of accounting territorialization.

Details

Accounting, Auditing & Accountability Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0951-3574

Keywords

Book part
Publication date: 1 June 2017

Chantale Mailhot and Ann Langley

This article draws on the literature on valuation and evaluation and the orders of worth framework to consider the process of knowledge commercialization from academia to…

Abstract

This article draws on the literature on valuation and evaluation and the orders of worth framework to consider the process of knowledge commercialization from academia to practice. Based on the study of two knowledge commercialization projects in a business school, the study contributes by showing how the orders of worth framework may assist in understanding the assignment of worth to knowledge-based objects in the context of multiple and potentially competing systems of valuation. The study also adds to the literature on the orders of worth framework by showing how “composite objects” or “assemblages” that achieve compromise or synergy (i.e., mutual reinforcement) between different value systems may be constructed and potentially sustained.

Details

Justification, Evaluation and Critique in the Study of Organizations
Type: Book
ISBN: 978-1-78714-379-1

Keywords

Book part
Publication date: 1 June 2017

Juliane Reinecke, Koen van Bommel and Andre Spicer

How is moral legitimacy established in pluralist contexts where multiple moral frameworks co-exist and compete? Situations of moral multiplexity complicate not only whether an…

Abstract

How is moral legitimacy established in pluralist contexts where multiple moral frameworks co-exist and compete? Situations of moral multiplexity complicate not only whether an organization or practice is legitimate but also which criteria should be used to establish moral legitimacy. We argue that moral legitimacy can be thought of as the property of a dynamic dialogical process in which relations between moral schemes are constantly (re-)negotiated through dynamic exchange with audiences. Drawing on Boltanski and Thévenot’s ‘orders of worth’ framework, we propose a process model of how three types of truces may be negotiated: transcendence, compromise, antagonism. While each can create moral legitimacy in pluralistic contexts, legitimacy is not a binary variable but varying in degrees of scope and certainty.

Details

Justification, Evaluation and Critique in the Study of Organizations
Type: Book
ISBN: 978-1-78714-379-1

Keywords

Article
Publication date: 6 August 2020

Naushad Mohamed, Babak Taheri, Anna Farmaki, Hossein Olya and Martin Joseph Gannon

This study aims to investigate the combinations of religiosity, cosmopolitanism and perceived destination image leading to satisfaction and loyalty amongst Muslim consumers within…

1030

Abstract

Purpose

This study aims to investigate the combinations of religiosity, cosmopolitanism and perceived destination image leading to satisfaction and loyalty amongst Muslim consumers within the Maldivian tourism and hospitality context.

Design/methodology/approach

Using fuzzy-set qualitative comparative analysis (fsQCA), this study reveals that diverse combinations of religiosity, cosmopolitanism and destination image dimensions stimulate satisfaction and loyalty in Muslim consumers.

Findings

Multiple recipes can be used to design compelling destinations that balance the desire for religiosity and cosmopolitanism characteristic of contemporary Muslim consumers. The results confirm the applicability of complexity theory in explaining Muslim consumer behaviour within the Islamic destination context.

Practical implications

Several implications for the hospitality and tourism industry are drawn from the results, with suggestions for future research provided. Each fsQCA recipe identifies distinct suggestions to shape the design of destination attributes and hospitality offerings to stimulate consumer satisfaction and loyalty.

Originality/value

Complexity theory was applied to assess the complex causal relationships among Muslim consumers’ religiosity, perceived destination image, cosmopolitanism, satisfaction and loyalty.

Details

International Journal of Contemporary Hospitality Management, vol. 32 no. 9
Type: Research Article
ISSN: 0959-6119

Keywords

Book part
Publication date: 24 March 2021

Stéphane Jaumier and Thibault Daudigeos

Past research on collectivist-democratic organizations has attributed their distinctiveness to their socio-political goals and democratic decision-making and largely ignored their…

Abstract

Past research on collectivist-democratic organizations has attributed their distinctiveness to their socio-political goals and democratic decision-making and largely ignored their work processes. This ethnographic study examines how such organizations resist alienating forms of work even in the face of direct competition with for-profit companies. It focuses on Scopix, a French cooperative sheet-metal factory where the first author spent one year as a shop-floor worker. Cooperators there developed various practices to retain an emancipatory dimension to their work, regularly putting forward “craft ethics” as a counterweight to the sheet-metal industry’s drive to rationalize work processes. Drawing on the sociology of worth, the authors analyze how these practices emerged from the arrangements that workers made between the industrial world on the one side and the domestic and inspired worlds on the other. This study contributes to the literature into two main ways. First, the authors refine the sociology-of-worth framework by conceptualizing the emancipatory dimension of work as the result of ad hoc arrangements between different worlds. Second, the authors highlight the need for the literature on collectivist-democratic organizations to increase its focus on work, introducing the concept of work degeneration as a step in that direction.

Details

Organizational Imaginaries: Tempering Capitalism and Tending to Communities through Cooperatives and Collectivist Democracy
Type: Book
ISBN: 978-1-83867-989-7

Keywords

Book part
Publication date: 1 June 2017

Charlotte Cloutier, Jean-Pascal Gond and Bernard Leca

This volume presents state-of-the-art research and thinking on the analysis of justification, evaluation and critique in organizations, as inspired by the foundational ideas of…

Abstract

This volume presents state-of-the-art research and thinking on the analysis of justification, evaluation and critique in organizations, as inspired by the foundational ideas of French Pragmatist Sociology’s economies of worth (EW) framework. In this introduction, we begin by underlining the EW framework’s importance in sociology and social theory more generally and discuss its relative neglect within organizational theory, at least until now. We then present an overview of the framework’s intellectual roots, and for those who are new to this particular theoretical domain, offer a brief introduction to the theory’s main concepts and core assumptions. This we follow with an overview of the contributions included in this volume. We conclude by highlighting the EW framework’s important yet largely untapped potential for advancing our understanding of organizations more broadly. Collectively, the contributions in this volume help demonstrate the potential of the EW framework to (1) advance current understanding of organizational processes by unpacking justification dynamics at the individual level of analysis, (2) refresh critical perspectives in organization theory by providing them with pragmatic foundations, (3) expand and develop the study of valuation and evaluation in organizations by reconsidering the notion of worth, and finally (4) push the boundaries of the framework itself by questioning and fine tuning some of its core assumptions. Taken as a whole, this volume not only carves a path for a deeper embedding of the EW approach into contemporary thinking about organizations, it also invites readers to refine and expand it by confronting it with a wider range of diverse empirical contexts of interest to organizational scholars.

Details

Justification, Evaluation and Critique in the Study of Organizations
Type: Book
ISBN: 978-1-78714-379-1

Keywords

Book part
Publication date: 1 June 2017

Stéphane Jaumier, Thibault Daudigeos and Vassili Joannidès de Lautour

The purpose of our article is to contribute to the further understanding of individual responses to pluralism, by studying in particular the role played by critiques and…

Abstract

The purpose of our article is to contribute to the further understanding of individual responses to pluralism, by studying in particular the role played by critiques and compromises in the formulation of such responses. Drawing on theoretical insights from the sociology of conventions, we look at the various modes of justification publicly advanced by French co-operators when engaging with co-operative principles. Our analysis allows us to identify three main instantiations, that is situated and flexible enactments, of these principles: pragmatic, reformist, and political. Our contribution to the understanding of pluralism and its instantiations by organizational members is threefold. First, in contrast with studies drawing on an institutional-logics perspective, our study shows that individual instantiations of pluralism rely not only on positive affirmations of logics but also on critical mobilizations of competing logics. Second, our study shows that pluralism can be understood not only as co-existing multiple logics, but also as different possible instantiations of the same logic, the ambiguity of which allows compromises to be settled with other logics. Third, we suggest that organizational members’ responses to pluralism often involve more than two logics, which are combined into a complex set of interdependent judgments. In addition, in relation to co-operative studies, our proposed typology provides a mapping that usefully extends the range of possibilities found in co-operators’ instantiations of co-operative principles, thus furthering our understanding of the diversity of the co-operative movement.

Details

Justification, Evaluation and Critique in the Study of Organizations
Type: Book
ISBN: 978-1-78714-379-1

Keywords

1 – 10 of over 3000