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The purpose of this paper is to analyse the adaptive market efficiency in the price–volume (P–V) relationship of the stocks listed in the Mexican Stock Exchange. The period under study goes from 1982 to 2015. In order to detect causality and, thus, determine adaptive efficiency in the market, one linear and two non-linear tests are applied. There are few papers in the literature that study the P–V relationship in Latin American markets; as such, this paper may be of interest and importance to financial academics and practitioners alike.

The Diks and Panchenko (DP) non-parametric Granger causality and the Brooks and Hinich (BH) cross-bicorrelation tests are applied.

Derived from the DP test, the findings show that there exists bi-directional non-linear Granger causality in 25.71 per cent of the firms studied, compared to 8 per cent when applying the linear Granger causality test. Therefore, there is evidence of weak-form efficiency in the market. From the BH test, evidence is shown of the adaptive market efficiency, since 71.42 per cent of firms exhibited some form of non-linear dependence in certain periods of time. With these results, the information process should be better studied for a greater comprehension of regulatory policies in the market and better decision-making tools for the investors.

This paper complements studies on the P–V relationship and efficiency in a Latin American market.

Este documento analiza la eficiencia adaptativa del mercado para la relación precio-volumen de las empresas que cotizan en la Bolsa Mexicana de Valores. El periodo bajo estudio es de 1982 a 2015. Para detectar causalidad y determinar la eficiencia adaptativa del mercado, se aplicó una prueba lineal y dos no-lineales. Existen pocos documentos en la literatura que estudien la relación precio-volumen en mercados latinoamericanos. Como tal, este documento puede ser de interés e importancia tanto para académicos como para profesionales de las finanzas.

Se aplicó la prueba de causalidad no-paramétrica de Diks y Panchenko y la prueba de bicorrelación cruzada de Brooks y Hinich.

Derivado de la prueba DP, los hallazgos muestran que existe causalidad no-lineal bidireccional en 25.71% de las empresas bajo estudio, comparado a un 8% cuando se aplica la prueba de causalidad lineal de Granger. Por lo tanto, existe evidencia de eficiencia en forma débil del mercado. De la pruba BH, se muestra evidencia de eficiencia adaptativa del mercado, dado que el 71.42% de las empresas exhibieron alguna forma de dependencia no-lineal en ciertos periodos de tiempo. Con estos resultados, el proceso de información debe ser mejor estudiado para una mayor comprensión de las políticas regulatorias del mercado y mejores herramientas para la toma de decisiones por los inversionistas.

Este documento complementa los estudios sobre la relación precio-volumen y la eficiencia en un mercado latinoamericano.

Small- and medium-sized enterprises (SMEs) mainly rely on their structure and internal networks to achieve their goals and remain competitive. However, their limited internal capabilities and complex environments can hinder their stability. Thus, this study evaluated the relationships among specific factors toward fostering organizational resilience (OR) in tourism SMEs.

A multi-methodological approach was adopted to address this research study, including (1) social network analysis (SNA) to formulate the conceptual model and (2) construct validation through partial least squares path modeling (PLS-PM).

The six proposed hypotheses were supported. These results suggest that addressing these variables and relationships after considering management style and people development as critical factors can foster OR in tourism SMEs.

The ideas that were developed were constrained to the organizational domain. Although the results apply to the Mexican context, this limitation can be offset by extending the proposal to other emergent regions or organizations. This can also increase the generalization of the results and foster improvements in the approaches applied.

Academics and managers must rethink resilience as the final state generated by multiple factors. This requires reconfiguring inner organizational interactions, providing more autonomy to operative units, reinforcing business intelligence and improving feedback mechanisms.

This research study contrasts previous studies because it proposes that SNA be exploited to avail of the advantages it confers in designing the conceptual model. In this regard, we present new relationships to promote OR and provide new avenues in order to improve the analysis of adaptation processes.

This paper aims to optimize the halal product distribution by minimizing the transportation cost while ensuring halal integrity of the product. The problem is considered as a capacitated vehicle routing problem (CVRP), based on the assumption that two different types of vehicles are used for distribution: vehicles dedicated for halal product distribution and vehicles dedicated for nonhalal products distribution. The problem is modeled as an integer linear program (ILP), termed CVRP-halal and nonhalal products distribution (CVRP-HNPD). It is solved using tabu-search (TS)-based algorithm and is suitable for application to real-life sized halal product distribution.

Two approaches are used in solving the problem: exact approach (integer-linear program) and approximate approach (TS). First, the problem is modeled as ILP and solved using CPLEX Solver. To solve life-sized problems, a TS-based algorithm is developed and run using MATLAB.

The experiments on numerical data and life-sized instances validate the proposed model and algorithm and show that cost-minimizing routes for HNPD are developed while ensuring the halal integrity of the products.

The proposed model and algorithm are suitable as decision support tools for managers responsible for distribution of halal products as they facilitate the development of minimum cost distribution routes for halal and nonhalal products while maintaining the integrity of halal products. The model and algorithm provide a low transportation cost strategy at the operational level of halal products distribution while fulfilling the halal logistics requirement.

To the best of the author’s knowledge, this is the first study that specifically deals with the CVRP of halal products distribution by proposing CVRP-HNPD model and TS-CVRP-HNPD algorithm. The proposed model and algorithm ensure the integrity of halal products along the distribution chain, from the warehouse (distribution center) to the retailer, while achieving lowest transportation cost.

The purpose of this paper is to validate market orientation (MO) and business results scales in an area of significant interest for the literature: namely, service firms of a small and micro‐scale in a market sharing many similarities with Latin America (cultural, social and economic), specifically the Spanish rural tourism market.

On the basis of a literature review covering works specializing in MO and its impact on the service sector, and in the characteristics of small‐ and micro‐sized service firms (SMSF), a qualitative and a quantitative study are carried out in Spain, at a national level.

The results validate the scales and identify that MO comprises the following dimensions: information‐gathering, dissemination of information, and response to the market. The validated business results scale includes economic/financial results and others of a more personal nature linked to the entrepreneur business owner.

The work provides knowledge regarding the activities undertaken by SMSF in the area of MO. Professionals from the small‐ and micro‐sized service sector can use this knowledge to plan and design market‐focussed actions that will lead to improved business performance.

The work validates MO and business results scales that have been widely studied throughout the literature but that leave a significant gap in the case of SMSF operating in Latin American countries. The business base in these countries comprises a large percentage of such small‐scale operations.

El objetivo de este trabajo es validar las escalas de orientación al mercado y de consecución de resultados empresariales en un ámbito de interés para la literatura como es el de las empresas de servicios de tamaño pequeño y micro en contexto próximos al de Iberoamérica, como es el sector del turismo rural en el ámbito español.

A partir de la revisión de la literatura especializada en orientación al mercado, su impacto en el sector servicios y en las características de las empresas de servicios pequeñas y micro, se lleva a cabo un estudio cualitativo y un estudio cuantitativo a nivel nacional en España.

Los resultados alcanzados permiten validar las escalas e identificar que la orientación al mercado queda integrada por las dimensiones de captación de información, diseminación de la información y respuesta hacia el mercado. Por otra parte, los resultados empresariales incluyen resultados económico‐financieros y otros de carácter personal vinculados al empresario.

Este trabajo aporta un mayor conocimiento en relación con las actividades que las empresas de servicios pequeñas y micro pueden llevar a cabo para orientarse al mercado. Este conocimiento puede ser utilizado por los profesionales del sector al planear y diseñar las acciones de mercado de sus empresas, conduciendo a un mayor desempeño de la actividad empresarial.

La orientación al mercado y sus efectos en empresas de servicios pequeñas y micro en un contexto próximo al iberoamericano como es el de España difiere con respecto a otros ámbitos de aplicación más generales. El conjunto de aspectos considerados en este trabajo, permiten llevar a cabo una adecuada aplicación empírica en esta área donde en la revisión de la literatura aparece una carencia de trabajos empíricos.

The purpose of this article was to highlight the various methods of extrusion technologies for encapsulation of bioactive components (BACs).

BACs provide numerous health-care benefits; however, downsides, including a strong effect of organoleptic properties by reason of the bitterness and acridity of a few components, and also a short shelf-life, limit their application in food. The food industry is still demanding complicated qualities from food ingredients, which were often impossible to obtain without encapsulation such as stability, delayed release, thermal protection and an acceptable sensory profile. Various techniques such as melt injection extrusion, hot-melt extrusion, electrostatic extrusion, co-extrusion and particles from gas-saturated solutions, could be used for maintaining these characteristics.

Extrusion technology has been well used for encapsulation of bioactive chemicals in an effort to avoid their numerous downsides and to boost their use in food. The count of BACs that could be encapsulated has risen owing to the extrusion technology just as form of encapsulation. Extrusion technique also aids in the devaluation of the fragment size of encapsulated BACs, allowing for greater application in the food business.

The study reported that encapsulating BACs makes them more stable in both the product itself and in the gastrointestinal tract, so using encapsulated BACs would result in a product with stronger preventive properties.

The purpose of this study is to evaluate food supply chain stakeholders’ intention to use Industry 5.0 (I5.0) drones for cleaner production in food supply chains.

The authors used a quantitative research design and collected data using an online survey administered to a sample of 264 food supply chain stakeholders in Nigeria. The partial least square structural equation model was conducted to assess the research’s hypothesised relationships.

The authors provide empirical evidence to support the contributions of I5.0 drones for cleaner production. The findings showed that food supply chain stakeholders are more concerned with the use of I5.0 drones in specific operations, such as reducing plant diseases, which invariably enhances cleaner production. However, there is less inclination to drone adoption if the aim was pollution reduction, predicting seasonal output and addressing workers’ health and safety challenges. The findings outline the need for awareness to promote the use of drones for addressing workers’ hazard challenges and knowledge transfer on the potentials of I5.0 in emerging economies.

To the best of the authors’ knowledge, this study is the first to address I5.0 drones’ adoption using a sustainability model. The authors contribute to existing literature by extending the sustainability model to identify the contributions of drone use in promoting cleaner production through addressing specific system operations. This study addresses the gap by augmenting a sustainability model, suggesting that technology adoption for sustainability is motivated by curbing challenges categorised as drivers and mediators.

Informed by the third-person effects (TPE) theory, this study aims to analyze restrictive versus corrective actions in response to the perceived TPE of misinformation on social media in the USA.

The authors conducted an online survey among 1,793 adults in the USA in early April. All participants were randomly enrolled in this research through a professional survey company. The structural equation modeling via Amos 20 was adopted for hypothesis testing.

Results indicated that individuals also perceived that others were more influenced by misinformation about COVID-19 than they were. Further, such a perceptual gap was associated with public support for governmental restrictions and corrective action. Negative affections toward health misinformation directly affected public support for governmental restrictions rather than corrective action. Support for governmental restrictions could further facilitate corrective action.

This study examined the applicability of TPE theory in the context of digital health misinformation during a unique global crisis. It explored the significant role of negative affections in influencing restrictive and corrective actions. Practically, this study offered implications for information and communication educators and practitioners.

The peer review history for this article is available at: https://publons.com/publon/10.1108/OIR-08-2020-0386

Purpose: This chapter analyzes the policies of immigration control implemented in Mexico in 2014 to deter the migration of Central Americans to the United States, and their impact on Central American youth migrants.

Methods: This chapter draws from three pools of data: (1) participant observation and interviews conducted with minor migrants in Mexico from 2015 to 2019; (2) Mexican and US government data on detentions and deportations of Central American minor migrants; and (3) publicly available information on Mexican and Guatemalan government programs and media campaigns targeted at addressing the migration of Central American minor migrants.

Findings: This chapter posits that the policies of migrant detention and deportation implemented in Mexico in 2014 turned the entire country into a borderland for Central Americans. These policies expanded the areas of migrant surveillance, detention, and deportation beyond Mexico’s traditional border regions, which, in turn, made youth migrants’ journeys through Mexico more precarious and prone to violence.

Research implications: This chapter examines the impact of immigration and border control policies implemented in Mexico and anti-immigration propaganda on Central American youth, and it demonstrates how Mexico has been converted into an expanded US border territory in an attempt to prevent migrants from reaching the United States’ physical borderland.

Value: This chapter analyzes the impact of US-led detention and deportation policies aimed at Central American migrants throughout Mexico, rather than just in the traditional border regions. These relatively novel policies are at the forefront of immigration control and warrant special attention.

The evolution of military profession in Latin American countries has not been the subject of research as compared to civil–military relationships because of the political intervention of the latter. Since the 1980s, with the restoration of democracy in countries of the Southern Cone, the design and management of defense is no more a monopoly of the armed forces, and they are now exposed to a wide range of influences. On the basis of the framework proposed by Moskos, Williams, and Segal in their book: The Postmodern Military: Armed Forces after the Cold War, where they argue the case of the United States of America as a paradigm of the military profession changes because of the postmodernism in industrialized countries, we pretend to make a comparative analysis of the changes or modernizations experienced by the military profession in Southern Cone's countries, mainly Argentina, Brazil, and Chile.