Search results

Traditional epidemic models, like the classical SIR, are fitted to real data using deterministic optimization techniques. As a consequence, their performances cannot be properly assessed and, more importantly, the estimates of the critical epidemic parameters (which are of dramatic importance in monitoring the epidemic evolution) cannot be complemented with the calculation of confidence intervals. The aim of the present work is to remove such limitations and to compare the results obtained using two stochastic versions of deterministic SIR models. We describe the two alternatives and the associated estimation procedures, and we apply the two methodologies to a set of COVID-19 data observed in Italy in the 2020 pandemic wave. Our estimates of the basic reproduction number are comparable with the official sources, but using our methods uncertainty can also be properly assessed.

Among world’s economies, the circular economy (CE) has become popular especially in the European Union and China, which opens several opportunities for sustainability leaders to gain a first-mover advantage and, consequently, to pursue organizational sustainability and growth. In spite of public policy support, since CE often requires entrepreneurial innovation among complex networks of companies, most companies are still learning how to manage knowledge dynamics at the inter-organization level. The chapter starts by defining the key characteristics of CE and identifying the peculiarities in terms of inter-firm cooperative and competitive relations, which help in delineating contributions from the green supply chain literature. The second section shows – through the discussion of term maps – how multiple- and inter-disciplinary streams of research are increasingly linked by hard (i.e., information communication technologies based) and soft (i.e., relational and organizational) aspects of knowledge management. The third section provides a discussion on key hard and soft factors that characterize four knowledge dynamics, i.e., knowledge creation, knowledge storage, knowledge transfer, and knowledge sharing that can improve the adoption and integration of circular processes within inter-organizational coopetitive strategies. Particular attention is here given to the cross-analysis of outcomes from theoretical papers, case studies, and quantitative empirical researches that contribute to shaping relations between internal and external factors that might play as predictors of a successful implementation of CE principles. Finally, the last section concludes with recommendations for improving organizational and managerial capabilities to manage inter-firm knowledge dynamics while pursuing CE objectives in international business environments. Beside this guidance for practitioners, directions for further research are suggested for each pillar of the emerging conceptual model.

International tourist hotels play important roles in the service industry and have to constantly improve their competitiveness. They need to provide their customers with consistently high service quality in order to satisfy them. The employees of the international tourist hotels are the most important links in the service delivery chain because they are in direct contact with their customers. Because employee morale affects customer satisfaction the managers of the international tourist hotels need to cultivate good relations with their internal staff. Prior research identifies many factors affecting the satisfaction of employees. While relevant literature extensively investigates job satisfaction and leadership behavior, studies of these variables in the tourism service, particularly in hotel management, are almost absent. This research concerns the correlation between the style of managerial leadership and employee's job satisfaction in the international tourist hotel industry. After literature reviewing, empirical model and hypotheses are established. The study employs the questionnaires to conduct an investigation for employees in international tourist hotels so as to collect information. This research surveys 500 employees in international tourist hotels by questionnaire. A total of 300 questionnaires were returned (73 percent). Through correlation analysis, this research discovers that employees are more satisfied under consideration-style-leadership than construction-style-leadership. After controlling for differences in salary, employees appear to prefer consideration-style-leadership. No matter what the leadership style is, employees’ job satisfaction does not relate towards their coworkers. Besides, employees have different perceptions on work, salary, and overall satisfaction depending on their education level and seniority. The findings in this research expand the knowledge of human resource management and provide some practical suggestions to managers. The study provides a mechanism by which hoteliers can obtain feedback from employees about leadership styles. Such feedback can then serve as the basis for further development of leadership theory across disciplines. This study provides a guide to the preparation of supervisor in the hotel industry as effective leaders for the dynamic environment of the future. This study also provides a basis for informing developers of leadership training programs that can lead to improved hospitality academic leadership.