A bivariate infinitely divisible law for modeling the magnitude and duration of monotone periods of log‐returns

The focus of this article is modeling the magnitude and duration of monotone periods of log‐returns. For this, we propose a new bivariate law assuming that the probabilistic framework over the magnitude and duration is based on the joint distribution of (X,N), where N is geometric distributed and X is the sum of an identically distributed sequence of inverse‐Gaussian random variables independent of N. In this sense, X and N represent the magnitude and duration of the log‐returns, respectively, and the magnitude comes from an infinite mixture of inverse‐Gaussian distributions. This new model is named bivariate inverse‐Gaussian geometric ( in short) law. We provide statistical properties of the model and explore stochastic representations. In particular, we show that the is infinitely divisible, and with this, an induced Lévy process is proposed and studied in some detail. Estimation of the parameters is performed via maximum likelihood, and Fisher's information matrix is obtained. An empirical illustration to the log‐returns of Tyco International stock demonstrates the superior performance of the law compared to an existing model. We expect that the proposed law can be considered as a powerful tool in the modeling of log‐returns and other episodes analyses such as water resources management, risk assessment, and civil engineering projects.     

We need to talk about strategy: How to conduct effective strategic dialogue

As researchers and consultants, we have spent the last few years helping a dozen major public and private organizations understand what went wrong with their strategic planning. We discovered that executives have a hard time with strategy because they are at a loss when the time comes to engage in strategic dialogue. Either their teams debate the organization’s values and goals when such issues should be settled, or they waste time on the details of specific projects that have yet to receive the green light. But whether the conversation is too broad or too narrow, strategy stays out of view. Drawing on recent developments in strategy-as-practice and decision-making literature, we propose a model that executives can follow to take control of strategy meetings and keep their teams on track. We ask them to focus on the right decision purpose, adjust the meeting’s communication style, and cast the right leader for the job. When these three simple rules are followed, the pillars of successful dialogue are aligned, and executives can finally talk about what matters most to them: strategy.     

Sustainable development in small and medium enterprises: The role of entrepreneurial orientation in supply chain management

Organizations are under increased pressure to improve their sustainable performance through the adoption of green supply chain management (GSCM) practices. Small and medium enterprises (SMEs) have lagged behind larger corporations due to a number of factors. Chief among these factors is the lack of resources and capabilities. In this study, we investigate whether entrepreneurial orientation as a distinctive firm-level resource contributes to the successful implementation of GSCM practices within SMEs. We use primary data obtained from 316 manufacturing SMEs and analyze the data by using a fuzzy-set qualitative comparative analysis (fsQCA). Our findings show four equifinal configurations of GSCM practices and the components of entrepreneurial orientation (EO) that lead to high environmental performance. Two practices, “eco-design” and “internal environmental management”, are present in all configurations, with the latter being the single core condition. The components of EO are present in all the configurations. Three distinct configurations lead to the simultaneous achievement of high environmental performance and high economic performance. Some noticeable differences appear in these configurations: “internal environmental management” is no longer a core condition, instead external practices (“green purchasing,” “cooperation with customers including environmental requirements,” and “investment recovery”) and “risk-taking” become core conditions. We exptrapolate our findings into a set of propositions that expand theory on the link between entrepreneurial orientation and sustainable performance. Our study provides insights for managers who seek to infuse entrepreneurial thoughts and actions into their green supply chain initiatives.     

The volatility effect of diaspora's location

Remittances can transmit volatility from host to home countries for some common patterns of diaspora's geographical distribution. In a migration portfolio model, the overall risk of volatility of any set of diaspora location is decomposed into a contagion and a concentration risks: a diaspora located in more volatile destinations induces a higher contagion risk, while a diaspora located in few destination countries increases the concentration risk. A series of estimations on a large panel of developing countries over 1995–2015 provide evidence for these two risks. Estimation of a structural model confirms that the geography of diaspora has an indirect impact on the origin country's aggregate instability through remittances.     

Adolescents’ perceptions of mother–father dominance in family vacation decisions: a 25-society study

Service Business - This study applies and builds on Davis and Rigaux’s (J Consum Res 1(1):51–62, 1974) triangle of spousal dominance styles of family purchase decisions. We explored...     

Main difficulties during RFID implementation: an exploratory factor analysis approach

RFID (Radio Frequency Identification) systems are meant to increase accuracy and velocity in objects identification, supporting Industry 4.0. However, there are challenges that need to be faced. This paper aims to identify and analyse the main difficulties regarding RFID systems implementation. We combined both systematic literature review and survey methods with ninety RFID experts. Data was analysed through Exploratory Factor Analysis. Empirical evidences have led to three main factors explaining most of the variance: operational difficulties, planning difficulties and employee difficulties. This corroborates the literature with recent data sets and provides quantitative analysis for prioritisation during RFID implementation. Professionals can use these research results as a guide to RFID systems implementation to create preventive actions during implementation initiatives. In the context of the Internet of Things and Fourth Industrial Revolution, RFID is considered an emerging topic nowadays, but no similar studies exist in the scientific literature.     

The role of innovation in the implementation of green supply chain management practices

How organizational green practices become routinely embedded in supply chains remains underexplored in the literature. Based on the practice‐based view and normalization process theory, this study adopts a novel perspective on green supply chain management (GSCM) practices implementation and suggests that innovation is a crucial mechanism in such process. Specifically, we theorize and test the mediating effect of product and process innovation on the relationship between GSCM practices and sustainability performance. Survey data from 173 manufacturing firms were used to test the model hypotheses. Our findings show that product and process innovation mediate the relationship between GSCM practices and sustainability performance. The findings also suggest that the relevance of different innovation mechanisms depends on the stage of the operational lifecycle within which the practices are implemented. Our study provides insights for managers and scholars seeking to define innovation strategies to ensure the successful implementation of GSCM practices.     

The impact of foreign and domestic remittance types and senders on education outcomes

Migration and remittances are very important for Nepal, yet the country continues to be plagued by low financial development. Increases in human capital investments, such as enrollment of school‐aged children, are a possible gain from the country's labor movements, which can be leveraged further through an understanding of the microeconomic processes involved. This study examines how remittances from both household and nonhousehold members affect school enrollment rates for children in Nepalese families. We analyze the positive and negative impacts of migration and remittances separately and consider both the type and location of the remittance sender using the Nepal Living Standards Survey (NLSS‐III) of 9,335 school‐aged children. We find enrollment more associated with an exogenous process and use this to estimate marginal effects in which remittances significantly increase children's school enrollment by about 2% points in most cases. These results suggest policymakers should encourage domestic migration (which allows proximity between senders and recipients of remittances as well as less family disruption).     

Cash holdings of listed and unlisted firms: new evidence from the euro area

This paper examines the cash holdings behavior of listed and unlisted firms. We argue that unlisted firms, which are smaller, face a greater wedge between the cost of external and internal finance and as a result they need to rely more on the later. Relying on internal funds means that firms have a precautionary motive to hold cash. We test our theory using an unbalanced panel of mainly small medium enterprises within the euro area over the period 2003–2017 paying special attention to the role of financial pressure, financial constraints and the recent financial crisis. Our findings reveal that unlisted firms hold more cash than their listed counterparts due to precautionary motives. In addition, when considering the effect of financial pressure, the results show that the difference in cash holdings between listed and unlisted firms exhibit a ‘U-shaped’ relationship. Finally, unlisted firms have a higher sensitivity to save cash out of cash flow than listed firms. Our results are robust to using different specifications and different financial pressure measures.