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Milling is a flexible creation process for the manufacturing of dies and aeronautical parts. While machining thin-walled parts, heat generation during machining essentially affects the accuracy. The workpiece temperature (WT), as well as the responses like material removal rate (MRR) and surface roughness (SR) for input parameters like cutting speed (CS), feed rate (F), depth-of-cut (DOC), step over (SO) and tool diameter (TD), becomes critical for sustaining the accuracy of the thin walls.

Response surface methodology was used to make 46 tests. To convert the multi-character problem into a single-character problem, the weightage was assessed using the entropy approach and the grey relational coefficient (GRC) was determined. To investigate the connection among input parameters and single-objective (GRC), a fuzzy mathematical modelling technique was used. The optimal performance of process parameters was estimated by grey relational entropy grade (GREG)-fuzzy and genetic algorithm (GA) optimization.

SR was found to be a significant process parameter, with CS, feed and DOC, respectively. Similarly, F, DOC and TD were found to be significant process parameters with MRR, respectively, and F, DOC, SO and TD were found to be significant process parameters with WT, respectively. GREG-fuzzy-GA found more suitable for minimizing the WT with the constraint s of SR and MRR and provide maximum desirability of 0.665. The projected and experimental values have a good agreement, with a standard error of 5.85%, and so the responses predicted by the suggested method are better optimized.

The GREG-fuzzy-GA is a new hybrid technique for analysing Inconel625 behaviour during machining in a 2.5D milling process.

In this paper, the authors examine the strategies used to reduce labour costs in three public hospitals in South Africa, which were effective and why. In the democratic era, after the revelations of large-scale corruption, the authors ask whether their case studies provide lessons for how public service institutions might re-make themselves, under circumstances of austerity.

A comparative qualitative case study approach, collecting data using a combination of interviews with managers, focus group discussions and interviews with shop stewards and staff was used.

Management in two hospitals relied on their financial power, divisions between unions and employees' loyalty. They lacked the insight to manage different actors, and their efforts to outsource services and draw on the Extended Public Works Program failed. They failed to support staff when working beyond their scope of practice, reducing employees' willingness to take on extra responsibilities. In the remaining hospital, while previous management had been removed due to protests by the unions, the new CEO provided stability and union–management relations were collaborative. Her legitimate power enabled unions and management to agree on appropriate cost cutting strategies.

Finding an appropriate balance between the new reality of reduced financial resources and the needs of staff and patients, requires competent unions and management, transparency and trust to develop legitimate power; managing in an authoritarian manner, without legitimate power, reduces organisational capacity. Ensuring a fair and orderly process to replace ineffective management is key, while South Africa grows cohorts of competent managers and builds managerial experience.

This public-sourced case describes the latest restructuring efforts by Deutsche Bank (DB) and gives a short history of prior restructuring efforts from the decade before. In July 2019, Christian Sewing, the new CEO of DB, announced a series of measures that included, among others, the elimination of global equity trading, the layoff of 18,000 employees, the creation of a “bad bank” to transfer noncore assets, and the suspension of dividends until 2022. The case describes key decisions a bank CEO makes when a bank needs to change course to return to profitability and growth. The case offers an opportunity to debate these key decisions, as well as discuss some of the prior ones during earlier restructuring efforts, and put the students in the CEO's shoes: What would you do and why? The case also describes key banking performance metrics (e.g., ROE, ROA) and other critical variables such as those reflecting capital health (Tier 1 ratio), as well as gives an overview of the bank business model and factors impacting bank profitability and value.

A novel method for modelling permanent magnets is investigated based on numerical approximations with rational functions. This study aims to introduce the AAA algorithm and other recently developed, cutting-edge mathematical tools, which provide outstandingly fast and accurate numerical computation of potentials and vector fields.

First, the AAA algorithm is briefly introduced along with its main variants and other advanced mathematical tools involved in the modelling. Then, the analysis of a circular Halbach array with a one-pole pair is carried out by means of the AAA-least squares method, focusing on vector potential and flux density in the bore and validating results by means of classic finite element software. Finally, the investigation is completed by a finite difference analysis.

AAA methods for field analysis prove to be strikingly fast and accurate. Results are in excellent agreement with those provided by the finite element model, and the very good agreement with those from finite differences suggests future improvements. They are also easy programming; the MATLAB code is less than 200 lines. This indicates they can provide an effective tool for rapid analysis.

AAA methods in magnetostatics are novel, but their extension to analogous physical problems seems straightforward. Being a meshless method, it is unlikely that local non-linearities can be considered. An aspect of particular interest, left for future research, is the capability of handling inhomogeneous domains, i.e. solving general interface problems.

The authors use cutting-edge mathematical tools for the modelling of complex physical objects in magnetostatics.

Industry 4.0 has an inimitable potential to create competitive advantages for the apparel industry by enhancing productivity, production, profitability, efficiency and effectiveness. This study, thus, aims to assess the digitalisation level of the Tanzanian apparel industry through the Industry 4.0 perspectives.

A mixed-methods-based approach was deployed. This study deployed semi-structured interviews, document review and observation methods for the qualitative approach. For the quantitative approach, closed-ended questionnaires were used to ascertain the digitalisation levels and maturity level of the textiles and apparel (T&A) factories and small and medium-sized textile enterprises in Tanzania. The sample size was 110, with participants engaged through the purposive sampling technique.

Industry 4.0 frameworks evolved into practices mainly since 2011 in several service and manufacturing industries globally. For Tanzania, the findings indicate that the overall maturity level of the T&A industries is 2.5 out of 5.0, demonstrating a medium level of adoption. Thus, the apparel industries are not operating under the industry 4.0 framework; they are operating within the third industrial revolution – Industry 3.0 – framework. For such industries to operate within the fourth industrial revolution – Industry 4.0 – that is only possible if there is significantly well-developed industrial infrastructure, availability of engineering talent, stable commercial partnerships, demand from the marketplace and transactional relationship with customers.

This study’s limitations include: firstly, Industry 4.0 is an emerging area; this resulted in limited theoretical underpinnings in the Tanzanian perspectives. Secondly, the studied industries may not suffice the need to generalise the findings for the entire country, thus needing another study.

Although Industry 4.0 conceptual frameworks have been on trial in several industries since 2011, this is amongst the first empirical research on Industry 4.0 in the Tanzanian apparel industry that assesses the digitalisation levels.

To ensure that students are well prepared to successfully analyze this case, they should be familiar with the following concepts, theories and principles:

▪ Stakeholder theory

▪ Concept of duty to consult and accommodate

▪ Concept of social license to operate (SLO)

▪ Concept of indigenous economic self-determination

▪ Indigenous world view

▪ Seventh generation principle

▪ Cree principles

▪ Dene principles

The information provided in this case was gathered by the authors through face-to-face interviews, phone interviews, e-mail exchanges and secondary research. Meadow Lake Tribal Council (MLTC) separates business operations from council operations through use of corporate entities (as shown in Exhibit 1 of the case). Meadow Lake Tribal Council II (MLTCII) is the corporate entity that oversees two companies referenced in the case: Mistik Management and NorSask Forest Products LP. Interviews were conducted with the General Manager at Mistik Management, Certification Coordinator at Mistik Management, Chief of Buffalo River Dene Nation, Chief of Waterhen Lake First Nation, MLTC Vice-Chief, Board Member and Advisor to MLTCII, President and CEO of MLTCII, MLTCII Business Development Consultant and a former consultant with MLTC, NorSask Forest Products and Mistik Management.

Mistik Management Ltd., a forestry management company co-owned by the nine First Nations of MLTC, was a leader in economic reconciliation in 2022. However, the company had dealt with significant challenges not long after it was established in 1989. Richard Gladue, former Chief of the one of MLTCs Member First Nations and a leader in economic development at MLTC, had been actively involved in establishing the organization. Gladue loved the life and vitality of the boreal forest in the Meadow Lake region and felt a sense of responsibility to take care of the forest and the land for generations to come. This responsibility was balanced with the acknowledgement that the forest also provided vast economic development, employment and wealth generation opportunities for MLTC and its Member First Nations.

In the early 1990s, MLTC and Mistik Management dealt with a year-long blockade by a group of protesters that included members of Canoe Lake Cree First Nation, one of the Member First Nations of MLTC. They had not been consulted on Mistik’s processes and policies, and the company’s clear-cut logging had affected their ability to continue their traditional way of life and practices on the land. After the incident, Mistik Management moved more quickly to invest in a co-management process that they were still refining and using in 2022 when consulting with Indigenous groups and communities.

A natural resource economy brings together Indigenous peoples, industry and government. In this case, students will learn about the important role that relationships play and how decisions are made when balancing complex legal, environmental and economic interests. Students will learn about the history of duty to consult and accommodate in Canada; conduct a stakeholder analysis and reflect on how decisions affect stakeholder interests; and make recommendations for meaningful Indigenous engagement strategies using the concept of social license and indigenous principles.

This case is suitable for use in undergraduate courses on indigenous business, ethical decision-making, public policy and/or natural resource development. There may also be applications in other fields of study, including anthropology, economics and political science.

If the case is used in an indigenous business course, it would be best positioned in the last third of the class, after topics such as duty to consult and accommodate, social license and meaningful engagement with indigenous communities have been covered. If used in an ethical decision-making course, it would be best used when discussing stakeholder theory and engaging in stakeholder analysis. If used in a public policy course, the case could be used to start a discussion around the duty to consult and accommodate indigenous communities in Canada. If used in a natural resource development course, the case would be best used as an example of indigenous economic development.