Framework to structure the Brazilian electricity futures market

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Waldemar de Souza ◽  
Carlos Heitor Campani ◽  
Martin Bohl ◽  
Rafael Palazzi ◽  
Felipe de Oliveira
Keyword(s):  
Mechanism Design ◽  
Electricity Market ◽  
Exploratory Study ◽  
Design Methodology ◽  
Futures Market ◽  
Economic Outcome ◽  
Content Type ◽  
Positive Economic ◽  
Environmental Space ◽  
Set Up

Purpose This study aims to formulate a mechanism design in the derivatives market, summarizing a framework to set up the Brazilian electricity futures market. Design/methodology/approach This exploratory study formulates a mechanism design in the derivatives market, summarizing a framework to set up the Brazilian electricity futures market. Findings The results show a positive economic outcome for the creation of the Brazilian futures electricity market. Originality/value The main feature in this work is to summarize a framework to set up the Brazilian electricity futures market applying mechanism design, applicable in other countries. The features of the mechanism are the space of expected results (Z), the strategies to survey the environmental space (θ) and the mechanism design – messages space (M).

Using transfer learning for diabetic retinopathy stage classification

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Enas M.F. El Houby
Keyword(s):  
Diabetic Retinopathy ◽  
Transfer Learning ◽  
Grade Level ◽  
Design Methodology ◽  
Content Type ◽  
Stage Classification ◽  
Set Up ◽  
Retinal Fundus ◽  
Automated Methods

PurposeDiabetic retinopathy (DR) is one of the dangerous complications of diabetes. Its grade level must be tracked to manage its progress and to start the appropriate decision for treatment in time. Effective automated methods for the detection of DR and the classification of its severity stage are necessary to reduce the burden on ophthalmologists and diagnostic contradictions among manual readers.Design/methodology/approachIn this research, convolutional neural network (CNN) was used based on colored retinal fundus images for the detection of DR and classification of its stages. CNN can recognize sophisticated features on the retina and provides an automatic diagnosis. The pre-trained VGG-16 CNN model was applied using a transfer learning (TL) approach to utilize the already learned parameters in the detection.FindingsBy conducting different experiments set up with different severity groupings, the achieved results are promising. The best-achieved accuracies for 2-class, 3-class, 4-class and 5-class classifications are 86.5, 80.5, 63.5 and 73.7, respectively.Originality/valueIn this research, VGG-16 was used to detect and classify DR stages using the TL approach. Different combinations of classes were used in the classification of DR severity stages to illustrate the ability of the model to differentiate between the classes and verify the effect of these changes on the performance of the model.

From campfire to coliseum: motivations for using social networks

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Paula Castro Pires de Souza Chimenti ◽  
Marco Aurelio de Souza Rodrigues ◽  
Marcelo Guedes Carneiro ◽  
Roberta Dias Campos
Keyword(s):  
Social Networks ◽  
Social Media ◽  
Exploratory Study ◽  
Design Methodology ◽  
Qualitative Approach ◽  
Content Type ◽  
Media Usage ◽  
Practical Implications ◽  
Collective Narrative

Purpose Through a literature review, a gap has been identified regarding the role of competition as a driver of social network (SN) usage. This study aims to design to address this gap, seeking motivators for SN usage based on how SN consumption may be related to users’ experience of competition. Therefore, the purpose of this study is to investigate the influence of competition in social media usage. Design/methodology/approach The authors used an exploratory qualitative approach, conducting a set of focus groups with young social media users. Data was analyzed with software. Findings Two new drivers for SN use are proposed, namely, competition and collective narrative. Research limitations/implications This is an exploratory study, and it does not seek to generalize results or quantify causal relationships among variables. Practical implications This paper offers SN managers a deeper understanding of key growth drivers for these media. Social implications This research can help society understand and debate the impacts of SNs on users’ lives, providing insights into drivers of excessive usage. Originality/value This paper proposes the following two SN usage drivers yet to be described in the literature: competition and collective narrative.

So you want to work in sports? An exploratory study of sport business employability

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
David J. Finch ◽  
Norm O'Reilly ◽  
David Legg ◽  
Nadège Levallet ◽  
Emma Fody
Keyword(s):  
United States ◽  
Emotional Intelligence ◽  
Labor Market ◽  
Exploratory Study ◽  
Design Methodology ◽  
Sport Management ◽  
The United States ◽  
Content Type ◽  
The Past ◽  
Analytical Thinking

PurposeAs an industry, sport business (SB) has seen significant growth since the early 2000s. Concurrently, the number of postsecondary sport management programs has also expanded dramatically. However, there remain concerns about whether these programs are meeting the demands of both employers and graduates. To address these concerns, this study examines the credential and competency demands of the SB labor market in the United States.Design/methodology/approachResearchers conducted an analysis using a broad sample of employment postings (N = 613) for SB positions from two different years, 2008 and 2018.FindingsResults support that a complex set of SB qualifications exist, and the credentials and competencies included in SB employment postings have evolved over the past decade.Originality/valueA noteworthy finding is that meta-skills are found to be particularly important for employability, including items such as communication, emotional intelligence and analytical thinking and adaptability.

scholarly journals Utilisation of zakāh and waqf fund in micro-takāful models in Malaysia: an exploratory study

2017 ◽  
Vol 9 (1) ◽  
pp. 100-105
Author(s):  
Said Adekunle Mikail ◽  
Muhammad Ali Jinnah Ahmad ◽  
Salami Saheed Adekunle
Keyword(s):  
Content Analysis ◽  
Low Income ◽  
Exploratory Study ◽  
Design Methodology ◽  
Secondary Data ◽  
Primary Data ◽  
Content Type ◽  
External Resources ◽  
Economic Support ◽  
Form Part

Purpose This paper aims to investigate the utilisation of both zakāh and waqf fund as external resources to ensure micro-takāful services are delivered to underserved communities in an effective and sustainable manner. It also addresses Sharīʿah issues related to the zakāh- and waqf-based model. Design/methodology/approach The study is a qualitative-based research. It uses both focus group and content analysis approach to gather primary data and identify and interpret relevant secondary data and Sharīʿah concepts in developing the zakāh- and waqf-based micro-takāful model. Findings It is discovered throughout the investigation of attributes of beneficiaries of zakāh and waqf institutions as well as micro-takāful scheme that all share commonalities in terms of social securities and socio-economic support to low-income households in societies. The study also finds that the disintegration of zakāh and waqf which form part of the Islamic ecosystem from the micro-takāful model makes it less effective and sustainable. Originality/value This study appears as a primitive attempt to discuss and develop a zakāh and waqf-based micro-takāful model with reference to Malaysian jurisdiction.

Excellence and gender

2015 ◽  
Vol 34 (1) ◽  
pp. 37-54 ◽  
Author(s):  
Farinaz Fassa
Keyword(s):  
Gender Equality ◽  
Common Good ◽  
Design Methodology ◽  
Local Level ◽  
National Level ◽  
Academic Careers ◽  
Content Type ◽  
And Gender ◽  
Set Up ◽  
Feminist Movements

Purpose – Discussing the Swiss case, the purpose of this paper is to examine how gender equality policies deal with the present requirements for scholars to be considered “excellent”. It aims to pinpoint the lines of tension or coherence between excellence, meritocracy and gender politics. Design/methodology/approach – In order to specify the norms of academic careers and their different renditions, the author draws on two studies (at local and national levels) to illustrate where the changes and resistances are taking place. Findings – The translations of a number of demands of feminist movements into the policies set up to favour equality between the sexes may combine to challenge the norms of academia as a gendered realm. Nevertheless, without strong pressure from feminists at local level and the conduct of research pursuing the enterprise of deconstructing norms, top-down policies may prove less “corrective” than affirmative action. This pressure is not only useful to build gender equality in science but also to broaden the spectrum of knowledge that can become a common good. Research limitations/implications – As neither the names nor the positions of the experts who select the candidates at national level are made public, we had to opt for other, less satisfactory means. Originality/value – The originality of the paper lies in the link made between the enhancements brought by Equalities policies and the changes they bring. It attempts to bring to light the extent to which gender equality policies conform to the neo-managerial order or challenge its norms to build a world that is more just.

scholarly journals An economic theory of Islamic finance

2017 ◽  
Vol 9 (2) ◽  
pp. 117-132 ◽  
Author(s):  
Mabid Ali Al-Jarhi
Keyword(s):  
Design Methodology ◽  
Islamic Finance ◽  
Economic Systems ◽  
Monetary Reform ◽  
Content Type ◽  
Reform Agenda ◽  
Banking And Finance ◽  
Economic Rationale ◽  
Islamic Economic ◽  
Set Up

Purpose This paper aims to provide an economic rationale for Islamic finance. Design/methodology/approach Its methodology is simple. It starts with listing the contributions to economic analysis relevant to the required rationale in the theories of banking, finance, price, money and macroeconomics, to identify the main rationale for Islamic finance. A concise description of the author’s model for an Islamic economic system, within which Islamic finance can be operational, is provided. Findings The paper finds distinct advantages of Islamic finance, when properly applied within the author’s model. Islamic finance can therefore be a candidate as a reform agenda for conventional finance. It opens the door for significant monetary reform in currently prevalent economic systems. Research limitations/implications The first limitation of the paper is that the distinct benefits of Islamic finance are all of macroeconomic types which are external to Islamic banking and finance institutions. They are therefore not expected to motivate such institutions to apply Islamic finance to the letter, without regulators interference to ensure strict application. The second limitation is the necessity to set up enabling institutional and regulatory arrangements for Islamic finance. Originality/value The results are unique as they challenge the received doctrine and provide non-religious rationale for Islamic finance.

Agent-based mechanism design – investigating bounded rationality concepts in a budgeting context

2017 ◽  
Vol 23 (1/2) ◽  
pp. 13-27 ◽  
Author(s):  
Iris Lorscheid ◽  
Matthias Meyer
Keyword(s):  
Mechanism Design ◽  
Bounded Rationality ◽  
Human Behavior ◽  
Design Methodology ◽  
Content Type ◽  
Agent Based ◽  
Decision Context ◽  
Agent Learning ◽  
Groves Mechanism ◽  
Research Questions

Purpose This study aims to demonstrate how agent-based simulation (ABS) may provide a computational testbed for mechanism design using concepts of bounded rationality (BR). ABS can be used to systematically derive and formalize different models of BR. This allows us to identify the cognitive preconditions for behavior intended by the mechanism and thereby to derive implications for the design of mechanisms. Design/methodology/approach Based on an analysis of the requirements of the decision context, the authors describe a systematic way of incorporating different BR concepts into an agent learning model. The approach is illustrated by analyzing an incentive scheme suggested for truthful reporting in budgeting contexts, which is an adapted Groves mechanism scheme. Findings The study describes systematic ways in which to derive BR agents for research questions where behavioral aspects might matter. The authors show that BR concepts may lead to other outcomes than the intended truth-inducing effect. A modification of the mechanism to more distinguishable levels of payments improves the results in terms of the intended effect. Research limitations/implications The presented BR concepts as simulated by agent models cannot model human behavior in its full complexity. The simplification of complex human behavior is a useful analytical construct for the controlled analysis of a few aspects and an understanding of the potential consequences of those aspects of human behavior for mechanism design. Originality/value The paper specifies the idea of a computational testbed for mechanism design based on BR concepts. Beyond this, a systematic and stepwise approach is shown to formalize bounded rational behavior by agents based on a requirements analysis, including benchmark models for the comparison and evaluation of BR concepts.

Do repetitive and non-repetitive companies equally benefit from Lean 4.0?

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Fabiana Dafne Cifone ◽  
Alberto Portioli Staudacher
Keyword(s):  
Quantitative Analysis ◽  
Exploratory Study ◽  
Industry 4.0 ◽  
Design Methodology ◽  
Deep Understanding ◽  
Operational Performance ◽  
Network Approach ◽  
Ongoing Debate ◽  
Content Type ◽  
Production Strategies

PurposeThe integration between the traditional lean management and Industry 4.0, namely called Lean 4.0, is under the spotlight of both academia and practitioners. While we agree on the benefits Lean 4.0 may bring to companies performance, we still lack a deep understanding of the characteristics of this paradigm, such as its effective application space. Recalling traditional lean better suits repetitive companies, we are keen to understand whether the anew Lean 4.0 will enlarge its application space.Design/methodology/approachWe performed an exploratory study, using a quantitative analysis based on Bayesian network approach to investigate whether Lean 4.0 results to be as effective in repetitive companies as in non-repetitive ones, in terms of operational performance.FindingsWhile our findings confirm that Lean 4.0 will enhance companies' performance regardless their production strategies, companies adopting a repetitive strategy do benefit from a much higher improvement. Our findings provide an insight on the true applicability space of Lean 4.0, which seems to be the same as the traditional lean.Originality/valueWe contribute to the ongoing debate of Lean 4.0 providing initial empirical evidence on how to improve the operational performance in non-repetitive companies, seeing that Lean 4.0 might not be the best choice in its current format.

Motivations, barriers and readiness factors for Quality 4.0 implementation: an exploratory study

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Michael Sony ◽  
Jiju Antony ◽  
Jacqueline Ann Douglas ◽  
Olivia McDermott
Keyword(s):  
Empirical Study ◽  
Exploratory Study ◽  
Design Methodology ◽  
Online Survey ◽  
Practical Relevance ◽  
Theoretical Base ◽  
Content Type ◽  
Body Of Knowledge ◽  
Practical Implications

PurposeQuality 4.0 is the new buzzword among quality professionals. There has been no empirical study of Quality 4.0 yet. Hence, the purpose of this paper is to investigate what are the motivations, barriers and readiness factors for Quality 4.0 implementation.Design/methodology/approachThis study uses an online survey on senior quality professionals working in leading companies in Europe and America. In total, 50 participants participated in this study.FindingsThis study finds the top five motivating, barriers and readiness factors for Quality 4.0 implementation. These factors are ranked in terms of the order of importance as perceived by senior quality professionals.Research limitations/implicationsThis is the first empirical study on Quality 4.0 that investigates the motivation, barriers and readiness factors of Quality 4.0. This study provides a theoretical base of Quality 4.0 body of knowledge in terms of its practical relevance and adoption in modern-day organizations.Practical implicationsOrganizations can use this study to understand what the motivation and barriers for implementing Quality 4.0. In addition, before implementation of Quality 4.0, the readiness factor for Quality 4.0 can be used by organizations to evaluate their preparedness before the actual implementation of the initiative.Originality/valueThis is the first empirical study on Quality 4.0 that captures the viewpoints of senior quality professionals on the motivation, barriers and readiness factors of Quality 4.0.

scholarly journals Tax evasion and financial instability

2020 ◽  
Vol 27 (2) ◽  
pp. 531-539
Author(s):  
Peterson K. Ozili
Keyword(s):  
Tax Evasion ◽  
Exploratory Study ◽  
Financial Stability ◽  
Design Methodology ◽  
Tax Revenue ◽  
Financial Instability ◽  
Financial Systems ◽  
Content Type

Purpose The purpose of this paper is to explore the association between tax evasion and financial instability. The discussion also examines the effects of tax evasion for financial instability. Design/methodology/approach This paper is an exploratory study on the effect of tax evasion on financial instability Findings The paper shows that tax evasion can reduce the tax revenue available to governments to manage the economy and can weaken the government’s ability to promote stability in financial systems, whereas on the contrary, taxpayers who evade taxes feel they can use the evaded tax money to rather improve their own financial stability. Originality/value This paper presents the first attempt to carefully examine the association between tax evasion and financial instability.

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