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Cities across the globe, particularly those of the less developed world, face long-term challenges associated with floods which impact negatively on the resilience of city systems and their inhabitants. In the city of Maroua, most urban management stakeholders have been unable to integrate flood resilience research into urban development issues. It is against this background that the purpose of this paper is to evaluate the governance issues constraining the deployment of flood resilience strategies implemented by residents in flood-prone zones and those used by the government via administrative authorities and institutions charged with urban development to flood-related risks in the city of Maroua, Far North Region of Cameroon.

Field surveys, participant observations, interviews, and on-the-spot appraisals were carried out with residents in flood-prone neighbourhoods and municipal authorities on the state of recurrent floods including mitigating strategies being implemented.

The results revealed that Maroua has a fragile ecological setting which has increased the vulnerability of the town to flood-related risks. This is further aggravated by the fact that municipal authorities are yet to have a thorough mastery of such recurrent flood incidences due to their limited planning horizons, rendering the urban poor disproportionately susceptible to flood-related stresses. This exposes them to unavoidable flood associated hazards such as water borne diseases (typhoid and cholera) as they are bogged down by physical and financial limitations. Besides, decision-making processes in relation to managing urban systems are not guided by good governance as efforts to enhance and integrate the local population for flood resilience are neither participatory nor inclusive, ushering the urban environment of Maroua into a frivolous path to profligacy.

For resilience to be deeply entrenched, the paper proffers for the mainstreaming of flood resilience strategies into urban development plans through multi-stakeholder involvement across different sectors and departments, as well as the setting up of a practical time table for monitoring the progress of these measures through geospatial technologies such as remote sensing and geographical information systems.

The purpose of this paper is to establish a tolerance optimization method based on manufacturing difficulty computation using the genetic algorithm (GA) method. This proposal is among the authors’ perspectives of accomplished previous research work to cooperative optimal tolerance allocation approach for concurrent engineering area.

This study introduces the proposed GA modeling. The objective function of the proposed GA is to minimize total cost constrained by the equation of functional requirements tolerances considering difficulty coefficients. The manufacturing difficulty computation is based on tools for the study and analysis of reliability of the design or the process, as the failure mode, effects and criticality analysis (FMECA) and Ishikawa diagram.

The proposed approach, based on difficulty coefficient computation and GA optimization method [genetic algorithm optimization using difficulty coefficient computation (GADCC)], has been applied to mechanical assembly taken from the literature and compared to previous methods regarding tolerance values and computed total cost. The total cost is the summation of manufacturing cost and quality loss. The proposed approach is economic and efficient that leads to facilitate the manufacturing of difficult dimensions by increasing their tolerances and reducing the rate of defect parts of the assembly.

The originality of this new optimal tolerance allocation method is to make a marriage between GA and manufacturing difficulty. The computation of part dimensions difficulty is based on incorporating FMECA tool and Ishikawa diagram This comparative study highlights the benefits of the proposed GADCC optimization method. The results lead to obtain optimal tolerances that minimize the total cost and respect the functional, quality and manufacturing requirements.

Although there exists a rich literature on fisheries traditional management systems in North and South America, Caribbean, Asia and Pacific islands, much less information is available on inland African fisheries. Presents the first regional‐scale survey of traditional management systems operated within the Lake Chad Basin. The survey focused on the status and organization of the local (de facto) management systems and their interactions with the modern (de jure) regulations. The results show that fishing activities within the whole Basin are still largely under the control of the traditional local authorities. The few open‐access fishing grounds are areas that traditional authorities have never controlled or water‐bodies that they have had to “give up” in recent times due to the presence of armed groups. These areas are also areas where illegal taxation systems operated by non‐legitimated governement agents have developed, essentially as a consequence of the remoteness and political instability of the whole Basin.

Recently, there has been a renewed interest in medical students’ mental health. The purpose of this paper is to determine factors associated with psychological distress in medical students and to assess the correlation between major lifestyle behaviours and mental health.

The authors conducted a cross-sectional questionnaire survey among 530 medical students randomized from a faculty of medicine in 2017. The authors used the 12-item General Health Questionnaire (GHQ-12) and the Simple Lifestyle Indicator Questionnaire (SLIQ) to assess mental health and lifestyle, respectively.

The mean value of GHQ-12 and SLIQ were 4.1±2.8 and 6.2±1.4, respectively. Bivariate correlation analysis showed that SLIQ was significantly correlated to GHQ-12 (r=−0.26; p<0.001). The prevalence of psychological distress (GHQ-12=4) was 50.1%. The authors found that low/middle financial situation of the family (OR=1.5; CI 95%=[1.1–2.3]), internship level, (OR=1.8; CI 95%=[1.1–3.3]), medium/poor perceived academic performance (OR=2.2; CI 95%=[1.5–3.2]) and medium/poor perceived health status (OR=2.3; CI 95%=[1.5–3.6]) were significantly associated with psychological distress. Multivariate analysis performing logistic regression showed that average and unhealthy lifestyle were independently associated with psychological distress, with an adjusted OR of 3.7 (CI 95%=[1.7–7.7]) and 5.8 (CI 95%=[2.4–14.8]), respectively.

The study highlighted the magnitude and the risk factors of psychological distress in medical students. Unhealthy lifestyle was a potential predictive of mental disorders. These findings provide fundamental information for future researches.

In the context of the coronavirus disease 2019 (COVID-19) crisis, this article aims to analyze the resilience of family businesses in a developing country like Cameroon. As such, this study seeks to fill two gaps in the literature: first, by comparing the financial and social performance of family companies with those of non-family companies not listed on the stock exchange, and second, by comparing performance across family-run companies, according to the companies' mode of leadership in Cameroon, a developing country affected by COVID-19 like the rest of the world.

Based on the literature review, the authors developed empirical models to identify the variables which influence the financial and social dimensions of business performance. These models were tested with multilinear regressions, using data collected from questionnaires distributed to 466 firms, of which 212 were family firms and 254 non-family firms. The authors completed our analyses with mean comparison tests to demonstrate whether our results are significantly different between family and non-family firms.

The authors' multiple regressions and tests produced two main results – the financial and social performance of all Cameroonian firms declined sharply during the crisis, and with the firms' financial performance hit hardest, family firms have been more resilient to the crisis in terms of financial and social performance than non-family firms. The weak governance and social protection system, as well as an inefficient legal system, do not seem to negatively affect the performance of these Cameroonian firms – the effects of the COVID-19 pandemic on the performance of family firms were better managed in firms where family members are actively involved in management or control through family members' strong representation on the board of directors (BD).

The two main limitations of this study concern the governance of these companies included and the failure to take the characteristics of the manager into account. Investigating other governance variables, such as the composition of the BD or the participation of employees in the capital, would enable us to refine the authors' interpretations of the companies' financial and social performance. Another limitation is the fact that the characteristics of the manager were not considered, especially when the manager is a family member. Exploring this variable would make studying the generational aspect of family businesses possible.

Family companies are more resilient to crisis because of the companies' long-term focus, which also encourages the companies to maintain the companies' social policy and to avoid redundancies as far as possible. Weak systems of governance and social protection, as well as an ineffective legal system, do not negatively affect the performance of Cameroonian family companies. The results also suggest that family shareholders should become more involved in the management and control of family's firms to make the firms financially and socially resilient and in so doing drastically reduce the impact of crises.

This study shows, in particular, how family firms are more socially resilient than other firms in times of crisis (by resorting less often to redundancies). Family firms should, therefore, arguably benefit the most from public support during crises.

The authors' research makes two main contributions to the literature on family businesses. The results first of all show that Cameroonian family firms have thus far performed better financially and socially during the COVID-19 period than non-family firms. Second, this research focuses on differences in performance based on family business management types during this specific crisis period. The results suggest that the most resilient family firms, in terms of performance, are those in which the family is involved in the management or control of the BD.

The purpose of this paper is to investigate coexisting attractors, chaos control and synchronization in a self-exciting homopolar dynamo system in this paper.

Two single controllers are designed and added to the proposed 3D autonomous chaotic system, and its stability at zero equilibrium point is guaranteed by applying an appropriate control signal based on the Lyapunov stability theory.

Numerical simulations reveal that the proposed 3D dynamo system exhibits periodic oscillations, double-scroll chaotic attractors and coexisting attractors. Finally, a single controller is designed for the global asymptotic synchronization of a unidirectionally coupled identical 3D autonomous chaotic system.

The derived results of this paper are new and complement some earlier works. The innovation concludes two points in this paper; coexisting attractors are foundthe and an appropriate control signal based on the Lyapunov stability theory is established. The ideas of this paper can be applied to investigate some other homopolar dynamo systems.

The Cloud of Things (IoT) that refers to the integration of the Cloud Computing (CC) and the Internet of Things (IoT), has dramatically changed the way treatments are done in the ubiquitous computing world. This integration has become imperative because the important amount of data generated by IoT devices needs the CC as a storage and processing infrastructure. Unfortunately, security issues in CoT remain more critical since users and IoT devices continue to share computing as well as networking resources remotely. Moreover, preserving data privacy in such an environment is also a critical concern. Therefore, the CoT is continuously growing up security and privacy issues. This paper focused on security and privacy considerations by analyzing some potential challenges and risks that need to be resolved. To achieve that, the CoT architecture and existing applications have been investigated. Furthermore, a number of security as well as privacy concerns and issues as well as open challenges, are discussed in this work.

Despite the growing literature on integrated reporting (IR) adoption and the emphasis on integrated thinking capitals, prior research works only focused on the financial and non-financial reporting rather than the cornerstones of IR. In order to fill this gap, the purpose of this paper is to investigate the value relevance of organizational capital (OC) after the mandatory adoption of IR in South Africa over the period 2006–2015.

The authors have used quantitative methods to test the hypotheses. The South African context is unique since the Johannesburg Stock Exchange is the first to mandate listed firms to adopt IR following King III report in March 2010.

The findings provide the first evidence, to the best of the authors’ knowledge, on the positive and significant impact of IR adoption on the value relevance of OC.

The authors contribute to IR literature by providing new insight on the value relevance of one capital from a new perspective addressing the importance of resources as inputs to the business model highlighted by integrated thinking in the IR framework. The findings derive various implications for the International Integrated Reporting Council, managers, decision makers and the research community.

Given the importance of hostels to students’ welfare and academic performance and recognition of the roles youths can play for affordable university housing, this study aims to investigate hostel management problems in the Buea Municipality, an educational hub in the South West Region of Cameroon. It explores potentials for youth advocacy for affordable university housing within the process of efficient hostel management.

The data were collected through a descriptive survey design from May to July 2015 via reconnaissance surveys, field observation, photographs, administration of questionnaires to hostel tenants (students) and interviews with hostel managers and law enforcement officials. The data have been presented and analysed using descriptive statistical techniques involving frequency tables, charts and percentages. Cartographic techniques have also been used to locate the study area.

It was found that hostel management problems in Buea stem from flaws arising from both hostel managers (landlords and/or caretakers) and hostel tenants (students) in contravention to affordable student housing and good governance principles of rent control, accountability, transparency, equality, participation and fairness. The notable hostel management problems found are indiscriminate rent increase, lack of transparency in billing and non-functional sub metres and non-refund of caution deposits by hostel managers, as well as violation of hostel rules, damage of hostel facilities and “selling of rooms” by hostel tenants.

This paper contends that youths have to be mainstreamed in the hostel management process with better platforms of advocating for affordable university students’ housing through rent control and other good governance practices in their hostel setting. It is hoped that the proposed efficient hostel management system and mainstreaming youth-led advocacy activities in affordable university students’ housing will go a long way to enhance students’ welfare and academic performance, help in rent control, fight against bribery and corruption and other governance problems.

This study investigates the impact of business strategy on earnings management practices for financial and non-financial firms in Oman. To assess the research objective, 430 firm-year observations from 2015 to 2019 were employed in the study. Using regression analysis, the findings suggest that differentiation strategy positively affects earnings management in financial sector firms. In addition, cost leadership strategy positively affects earnings management in non-financial sector firms. This indicates that business strategy is associated with company leaders managing their earnings while they are trying to survive through competition. These findings are useful for regulators, as they can introduce mechanisms to curb earnings management practices and instil more faith in investors.