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Spam emails classification using data mining and machine learning approaches has enticed the researchers' attention duo to its obvious positive impact in protecting internet users. Several features can be used for creating data mining and machine learning based spam classification models. Yet, spammers know that the longer they will use the same set of features for tricking email users the more probably the anti-spam parties might develop tools for combating this kind of annoying email messages. Spammers, so, adapt by continuously reforming the group of features utilized for composing spam emails. For that reason, even though traditional classification methods possess sound classification results, they were ineffective for lifelong classification of spam emails duo to the fact that they might be prone to the so-called “Concept Drift”. In the current study, an enhanced model is proposed for ensuring lifelong spam classification model. For the evaluation purposes, the overall performance of the suggested model is contrasted against various other stream mining classification techniques. The results proved the success of the suggested model as a lifelong spam emails classification method.

This study provides the critical masses (thresholds) at which the positive incidence of finance and economic growth will be dampened by the negative effects of income inequality and poverty on energy consumption in Sub-Saharan Africa for policy direction.

The study employed the two steps systems GMM estimator for 41 countries in Africa from 2005–2020.

The study found that for finance to maintain a positive effect on energy consumption per capita, the critical thresholds for the income inequality indicators (Atkinson coefficient, Gini index and the Palma ratio) should not exceed 0.681, 0.582 and 5.991, respectively. Similarly, for economic growth (GDP per capita growth) to maintain a positive effect on energy consumption per capita, the critical thresholds for the income inequality indicators (Atkinson coefficient, Gini index and the Palma ratio) should not exceed 0.669, 0.568 and 6.110, respectively. On the poverty level in Sub-Saharan Africa, the study reports that the poverty headcount ratios (hc$144ppp2011, hc$186ppp2011 and hc$250ppp2005) should not exceed 7.342, 28.278 and 129.332, respectively for financial development to maintain a positive effect on energy consumption per capita. The study also confirms the positive nexus between access to finance (financial development) and energy consumption per capita, with the attending adverse effect on CO₂ emissions inescapable. The findings of this study make it evidently clear, for policy recommendation that finance is at the micro-foundation of economic growth, income inequality and poverty alleviation. However, a maximum threshold of income inequality and poverty headcount ratios as indicated in this study must be maintained to attain the full positive ramifications of financial development and economic growth on energy consumption in Sub-Saharan Africa.

The originality of this study is found in the computation of the threshold and net effects of poverty and income inequality in economic growth through the conditional and unconditional effects of finance.

The purpose of this study is to offer exploration of pedagogic frailty as a framework to support professional development of university teachers in a personalised and discipline-sensitive way.

The method involves participants constructing a concept map for each dimension of the model. These maps must have high explanatory power to act as a frame for developing a personal narrative to support reflection on practice. This reflection starts from the academic’s current knowledge structure and provides a bespoke, individualised focus for further learning.

This conceptual paper is informed by case studies of academics’ interactions with the frailty model that have helped to refine it as a faculty development tool. This is clarified by providing explicit requirements of an “excellent” map, and places the reflective process within a learning theory that is aligned with the values that underpin the model.

The type of rhizomatic learning that is supported by the model, in which there are no imposed learning outcomes or strictly delineated pathways to success, is particularly suited to support the professional development of more senior academics. This represents an innovative approach to faculty development.

Transformative learning (TL) and leadership are key leverage points for supporting society’s transition toward sustainability. The purpose of this study is to identify essential components of TL within an international sustainability leadership master’s program in Sweden that has been described by many students as life-changing, empowering and transformational.

Alumni spanning 15 cohorts provided answers to a survey and the responses were used to map components of TL as experienced by the students.

The survey confirms the anecdotal assertions that the program is transformational. The findings suggest that community, place, pedagogy, concepts and content, disorientation and hope and agency are essential components, combined with the synergy of those into an integrated whole that support transformational change according to many respondents.

This study provides program designers and educators with suggested components and emphasizes their integration and synergy, to support TL experiences for sustainability leaders.

While sustainability-oriented education is increasingly placing importance on engaging students in inter- and transdisciplinary learning processes with societal actors and authentic challenges in the centre, little research attends to how and what students learn in such educational initiatives. This paper aims to address this by opening the “black box” of learning in a Challenge Lab curriculum with transformational sustainability ambitions.

Realist evaluation was used as an analytical frame that takes social context into account to unpack learning mechanisms and associated learning outcomes. A socio-cultural perspective on learning was adopted, and ethnographic methods, including interviews and observations, were used.

Three context-mechanism-outcome (CMO) configurations were identified, capturing what students placed value and emphasis on when developing capabilities for leading sustainability transformations: engaging with complex “in-between” sustainability challenges in society with stakeholders across sectors and perspectives; navigating purposeful and transformative change via backcasting; and “whole-person” learning from the inside-out as an identity-shaping process, guided by personal values.

The findings of this paper can inform the design, development, evaluation and comparison of similar educational initiatives across institutions, while leaving room for contextual negotiation and adjustment.

This paper delineates and discusses important learning mechanisms and outcomes when students act as co-creators of knowledge in a sustainability-oriented educational initiative, working with authentic challenges together with societal actors.

This paper reports on how micro-learning design principles are being trialled in an Australian and a Malaysian university to make online courses more accessible and attractive, and a more positive experience, with the aim of increasing student success. Central to this approach is segmenting materials into “bite-size” instalments by way of short micro-lecture presentations and reducing other content. The aim of this “less is more” strategy is to reduce unnecessary cognitive load as an impediment to learning so that focus can shift to prioritising the most essential skills and content. The purpose of this trial is to explore the efficacy of micro-learning as a means for increasing student engagement and learning.

The trials involved a mixed mode methodology drawing on qualitative and ratings data from course satisfaction surveys and records on grades and completion.

To date, results have shown significant increases in student engagement and satisfaction, and also performance. Our application of micro-learning included reducing volume of content based on its practical value, use of novelty (e.g. infusing guest presenter input) and design of practical and collaborative student activities.

Early results are encouraging regarding apparent utility for engaging learners and ease of application, i.e. implementability and transference potential. However, the rapidly expanding area of online learning requires further research to establish a well-validated evidence base for effective online teaching practices.

The findings are relevant to universities involved in online and blended learning. Micro-learning design methods show promise in being able to address major engagement barriers including cognitive overload.

More students are struggling with learning in today's social environment brought about with the massification of higher education. Micro-learning seeks to address major barriers these learners face with methods that go beyond traditional teaching practices.

Findings here are encouraging and contribute to existing understanding on ways to increase learner engagement in the competitive and fast-growing area of online learning for universities globally.

In this article, we explore some of the barriers that prevent learning about grand challenges. By grand challenges, we refer to transformational social and environmental issues and the critical barriers toward addressing them. Despite recent research contributions, initiatives, and calls for action to focus on such concerns, relatively little is known about the different barriers that hinder learning about grand challenges. To explore these issues, we draw from Rayner’s (2012) concept of uncomfortable knowledge, defined as knowledge that is disagreeable to organizations because it may challenge their value base, self-perception, organizing principles, or sources of legitimacy. Focusing on the example of recent programmatic attempts to advance “responsible education” in business schools, we identify three barriers to learning about grand challenges: Cognitive overload, emotional detachment, and organizational obliviousness. We conclude by outlining several implications on how to overcome these barriers, adding to recent academic and policy debates on how to make business school education more attuned to the transformational and social challenges of our time.