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The analytical hierarchical process (AHP)’s main purpose is to assess higher hierarchy levels based on the cooperation of its various levels. It results in a well-designed model-based method in which the weights for the selected attribute are calculated using dimensions, criteria, and indicators. This paper aims to highlight the benefits of blockchain in supply chain management with the help of a literature review along with opinions of experts from various sectors.

With the goal of enhancing the use of blockchain technology in supply chain management, particularly when comparing within the same industry, the AHP methodology has been used. In order to develop the AHP model, a total of eight elements are examined in this study, which are decentralization, resiliency, security, smart contracts, sustainability, traceability, transparency and trust. A calculation of a Desirability Index for conventional supply chain and blockchain-enabled supply chains has been also developed.

Findings where that in a blockchain-enabled supply chain, the global weights of individual benefit variables are considerably larger than in conventional supply chains. When the score of the Desirability Index for conventional supply chain and blockchain-enabled supply chain is compared, the blockchain-enabled supply chain significantly surpasses the conventional supply chain in terms of increasing sustainable development in today’s supply networks.

This study takes into account the AHP methodology applying it on blockchain. This has not been done before in the academic world, at least as far as the authors may be aware of. The originality of combining such process with a recent technology such as blockchain highlights the value of this research.

The purpose of this paper is to focus on a supply chain (SC) simulation of all its management processes by means of a multi‐agent system (MAS).

Nowadays, the company must develop its activity in an environment characterized by: globalization, hard competitiveness, the necessity of flexibility and of answering dynamically to a changing demand. Thus, a distributed, autonomous approach, strong enough to face changes is necessary, which is what MASs contribute to. An agent can represent each of the components that form the SC. Then the resulting agent system will own similar characteristics to the ones in the studied SC: autonomy, social abilities, reactivity, pro‐activity.

When analysing the demand for each SC member (from manufacturer to final consumer), one can observe that while consumer demand is a relatively stable feature, the upper link in the chain (the manufacturer), presents a very pronounced variability. This is known as the “bullwhip effect” or “forrester effect” and is mainly due to the fact that the SC members' strategies are not considered as a whole but as a sum of individual strategies. In the proposed system, each agent will be communicated with other “agents” who will be the only responsible for making forecasts based on information provided to it by all components of the chain. The ultimate goal is for each SC echelon to satisfy its own objectives, while at the same time meet the local and external constraints.

In this work a standard SC is proposed (one manufacturer – one distributor – one wholesaler – one retailer) although it could easily be modified to incorporate a bigger number of members in each echelon within the SC.

The paper shows the benefits of using artificial intelligence in the SC management.

This study describes an alternative way of applying failure mode and effects analysis (FMEA) to a wide variety of problems. It presents a methodology based on a decision system supported by qualitative rules which provides a ranking of the risks of potential causes of production system failures. By providing an illustrative example, it highlights the advantages of this flexible system over the traditional FMEA model. Finally, a fuzzy decision model is proposed, which improves the initial decision system by introducing the element of uncertainty.

The aim of the present article is to decide the ideal number of warehouses for a food manufacturer in the north of Spain (Asturias) for the year 2000, and their ideal location in the Spanish Peninsula by cluster analysis. The stages followed are to comment first on the underlying assumptions of the study, then on the methodology and the structure of the program developed to solve the problem, as well as on their input and output files. How the cluster and cost are calculated is discussed and finally the solution to this real case is provided.

Dispatching rules are usually applied dynamically to schedule jobs in flexible manufacturing systems. Despite their frequent use, one of the drawbacks that they display is that the state the manufacturing system is in dictates the level of performance of the rule. As no rule is better than all the other rules for all system states, it would be highly desirable to know which rule is the most appropriate for each given condition, and to this end this paper proposes a scheduling approach that employs inductive learning and backpropagation neural networks. Using these latter techniques, and by analysing the earlier performance of the system, “scheduling knowledge” is obtained whereby the right dispatching rule at each particular moment can be determined. A module that generates new control attributes is also designed in order to improve the “scheduling knowledge” that is obtained. Simulation results show that the proposed approach leads to significant performance improvements over existing dispatching rules.

The purpose of this paper is to compare and contrast the international trade characteristics of commerce between Latin American countries and some of the top economies in the world, in order to identify new business opportunities for LATAM firms in dynamical external markets.

A triple indexed gravity model, correcting with robust standardized errors clustered, and a panel data analysis was used to obtain the relationship between Latin American countries and advanced and other emerging economies.

The main finding of this paper is that innovation overcomes gravity effects and parameters typical of a knowledge society are the significant ones to explain trade among different regions. The model that includes an innovation proxy accommodates with the new international theories of trade. Besides, communication capacity is essential to reach consumers abroad with newer and more complex products. Moreover, the constant is significant when innovation is included, which may imply intersectoral trade that behaves relatively stable in bilateral trade.

The findings suggest that the economies that have some relevance in trade, have increasing numbers regarding patents. Thus, the empirical findings relate to the theoretical models which state that comparative advantages may be dynamic due to technological innovation.

This paper shows that innovation is a central parameter to engage in intratrade and develop a knowledge-based economy. Latin America sometimes appears to be a puzzle as to how to improve its economic performance and overcome its social and economic problems. Intratrade seems to be the route to increase Latin American business participation in world trade.

El propósito de este documento es comparar y contrastar las características comerciales internacionales del comercio entre los países latinoamericanos y algunas de las principales economías del mundo, con el fin de identificar nuevas oportunidades de negocios para las empresas de LATAM en mercados externos dinámicos.

Se utilizó un modelo de gravedad triple indexado el que se corrigió con errores robustos estandarizados clusterizados, y un análisis de datos de panel para obtener la relación entre los países latinoamericanos y las economías avanzadas y otras economías emergentes.

Uno de los principales hallazgos es que la incorporación de la innovación en el modelo anula el efecto de las variables típicas asociadas a la gravedad. Por lo que se podría suponer que, los parámetros propios de una sociedad del conocimiento son más importantes para explicar el comercio entre las diferentes regiones. El modelo incluye un variable de innovación que se adapta a las nuevas teorías internacionales del comercio. Otro hallazgo es que la capacidad de comunicación es esencial para llegar a los consumidores en el extranjero con productos más nuevos y complejos. Por último, la constante es significativa cuando se incluye la innovación, lo que podría implicar un comercio intersectorial que se comporta relativamente estable en el comercio bilateral.

Los resultados sugieren que las economías que tienen cierta relevancia en el comercio poseen un número creciente de patentes. Por lo tanto, los hallazgos empíricos se relacionan con los modelos teóricos que establecen que las ventajas comparativas pueden ser dinámicas debido a la innovación tecnológica.

Este documento muestra que la innovación es un elemento central para participar en el comercio interno y desarrollar una economía basada en el conocimiento. América Latina a veces parece ser un enigma sobre cómo mejorar su desempeño económico y superar sus problemas sociales y económicos. El comercio intraindustrial parece ser la ruta para aumentar la participación empresarial de América Latina en el comercio mundial.

The price of a painting is determined by multiple variables, including color-related variables. Colors are important in an economic analysis. This study aims to analyze the paintings executed by Jean-Michel Basquiat (the famous street artist from the 1980s' New York City) and sold at auction to study the potential effect of color intensity, luminosity and color contrast on the prices of his paintings. The authors also study the case of the op art master, Carlos Cruz-Diez, as a robustness analysis to the main results. The analysis that the authors present may be of interest to academicians and to participants in the art market.

The authors run a hedonic regression model considering 306 paintings (executed by Basquiat alone), and 41 works painted collaboratively between Basquiat and Warhol and sold at auction (2003–2017). The data and the images corresponding to each painting were hand-collected from the websites of several auction houses and complemented with information obtained from the Artprice and Blouin websites.

Increases in color intensity, luminosity and color contrast have a positive effect on art prices. The authors also find that color intensity is even more recognized (as reflected by higher prices) for paintings belonging to Basquiat's most appreciated (understood as most expensive) artistic period (1980–1983) and during the second part of the sample period (2011–2017). The authors find similar results for Cruz-Diez. The authors also estimate that Basquiat's artworks made collaboratively with Andy Warhol are worth 55% less than those made only by Basquiat. An investment in Basquiat's paintings generated an average annual compounded return of 16.81% (2003–2017), clearly overperforming the S&P 500.

The main limitation of the hedonic regression method lies in the need to have a significant and varied sample to identify the true effect of each variable on the price of the good. Another limitation is that we are only able to use art prices from auctions, as this is the only comprehensive source of data that is publicly available. These two limitations are common to all studies that use the hedonic pricing model. This paper has implications not only for the art pricing (and more generally, asset pricing) literature, but also for the fields of psychology and marketing.

This is the first paper that highlights the importance of analyzing the price impact of color intensity throughout the artistic periods of a painter, finding that color intensity is even more appreciated (as reflected by higher prices) for paintings belonging to an artist's most recognized period. In the case of color contrast, the authors present a novel way to estimate this variable.

El precio de una pintura está determinado por múltiples variables, incluidas las relacionadas con el color. Los colores son importantes en el análisis económico. En este trabajo, se analizan las obras realizadas por Jean-Michel Basquiat (el famoso artista callejero latino de la escena artística neoyorquina de los años 80) y vendidas en subasta, para estudiar el efecto potential que la intensidad del color, la luminosidad y el contraste de sus pinturas pueden tener sobre sus precios También estudiamos el caso del maestro de op-art, Carlos Cruz-Diez, como análisis de robustez a nuestros principales resultados. El análisis que presentamos puede ser de interés tanto para académicos como para participantes del mercado del arte.

Realizamos un modelo de regresión hedónica considerando 306 obras (pintadas solo por Basquiat), y 41 obras realizadas de manera colaborativa entre Basquiat y Warhol y vendidas en subasta (2003–2017). Los datos y las imágenes correspondientes a cada obra fueron recolectados a mano de los sitios web de varias casas de subastas y complementados con información de los sitios web de Artprice y Blouin.

Incrementos en la intensidad, luminosidad y contraste del color (variable para la que proponemos una nueva medida), inciden positivamente en los precios del arte. También encontramos que la intensidad del color es aún más reconocida (como se refleja en los precios más altos en las subastas) para pinturas pertenecientes al período artístico más apreciado de Basquiat (1980–1983), entendido como el más caro, y durante la segunda parte del período muestral (2011–2017). Además, hallamos resultados similares para Cruz-Diez. De igual forma, estimamos que las obras de arte de Basquiat realizadas en colaboración con Andy Warhol valen un 55% menos que las realizadas solo por Basquiat. Una inversión en las pinturas de Basquiat generó un rendimiento compuesto anual promedio del 16,81% (2003–2017), claramente superando el rendimiento total del índice S&P 500.

La principal limitación del método de regresión hedónica radica en la necesidad de contar con una muestra significativa y variada para identificar el verdadero efecto de cada variable sobre el precio del bien en estudio. Otra limitación consiste en que solo es posible utilizar los precios de las obras de arte que son vendidas en subastas, ya que esta es la única fuente completa de datos que está disponible públicamente. Estas dos limitaciones son comunes a todos los estudios que utilizan el modelo de precios hedónicos. El artículo tiene implicaciones no solo para la literatura sobre precios de arte (y, más en general, sobre los precios de los activos), sino también para la literatura sobre psicología y mercadeo, en donde el estudio del impacto de los colores en las emociones y en el atractivo de un producto son de suma importancia.

Este es el primer estudio que destaca la importancia de analizar el impacto en precios de la intensidad del color a lo largo de los períodos artísticos de un pintor, debido a que se determinó que la intensidad de color es aún más apreciada (como se refleja en los precios más altos en las subastas), para las pinturas pertenecientes al período artístico más reconocido de un artista. En el caso del contraste de color, se propuso y utilizó una forma novedosa de estimar esta variable.

The purpose of this paper is to understand women’s approaches to acquiring financial and other resources is essential for closing the entrepreneurship gender gap. In nearly 40% of economies, women’s early-stage entrepreneurial activity is half or less than half of that of men’s.

Even when there is extensive literature on female entrepreneurs, the authors review the findings through a Coronavirus Disease 2019 (COVID-1)9 crisis lens, trying to find new perspectives and solutions. With the approach of a systematic review of 4,520 publications on financing topics related to female entrepreneurs, various sources of financing available to female entrepreneurs are considered: bootstrapping, banks, business angels, venture capital and crowdfunding.

Identifying potential gender bias both on the supply and the demand side of financing, this research highlights new directions in encouraging female entrepreneurship and gives guidelines to public organisations on how to foster advanced forms of financing for female entrepreneurs in COVID-19 times.

The COVID-19 pandemic has posed an unprecedented challenge for economies and companies. Female entrepreneurs are the ones who have been hit harder, as they overcome pre-existing barriers, such as lack of access to finance, lack of networks and mentors and gendered priorities, among others. Without ensuring gender policies to counter these incremental negative effects, the authors face the risk of widening the gender gap.

Regarding previous systematic reviews of literature, this paper focusses on a specific challenge, how women entrepreneurs finance their activity, with a double vision: supply and demand of money.

Se estudian los determinantes y la evolución de la actividad bursátil mensual en el mercado accionario colombiano de 2007 a 2016.

Para ello se emplean modelos de series de tiempo tipo ARIMAX y GARCH, incluyendo variables exógenas, recomendadas por la literatura previa.

Encontramos que la actividad bursátil puede ser pronosticada en buena parte por el valor rezagado a un mes y las innovaciones de cinco y 12 meses. También contribuyen a predecirla, como variables exógenas, una dummy de rendimientos positivos en los últimos tres meses, la presencia de emisiones primarias y el índice VIX de volatilidad del SP500. Estos resultados se mantienen en un alto grado al emplear medidas alternativas de actividad bursátil, el número total de operaciones y la rotación.

Se propone un modelo de predicción de la actividad bursátil que puede servir de modelo para otros mercados accionarios de Latinoamérica. El modelo obtenido es altamente predictivo del valor transado total del mercado al siguiente mes. La estimación de la actividad bursátil es de utilidad para instituciones como la Bolsa de Valores de Colombia, reguladores de los mercados financieros, así como para grandes inversionistas institucionales.

El propósito central de los mercados financieros secundarios consiste en facilitar la transacción de activos financieros, lo que debe reflejarse en alta actividad bursátil, tanto en número de operaciones como en valor transado total. La posibilidad de transar altos montos es una medida importante del desarrollo de un mercado financiero. De esta manera, el modelo aquí propuesto puede usarse para monitorizar y explicar el desarrollo del mercado. En particular, se evidencia el nocivo efecto de la debacle de Interbolsa a finales de 2012 y el positivo efecto de las emisiones primarias.

Este es el primer paper en estudiar la actividad bursátil del mercado accionario colombiano en años recientes. Sirve como modelo para el estudio y seguimiento de esta variable en otros mercados accionarios latinoamericanos.

To study the determinants and evolution of the trading activity in the Colombian Stock Market from 2007 to 2016.

ARMA time series models were used, including several explanatory variables recommended by previous literature.

We find that stock market activity can be predicted to a large extent by its lags, and that positive returns in the last three months, emissions and the VIX index are also explicative variables, as suggested by empirical studies in other countries and theoretical models of market microstructure. These results are robust by using alternative measures of trading activity, total number of trades and turnover.

The main contribution of this study is the analysis of the trading activity of the Colombian Stock Market, a critical variable for monitoring the development of any financial market.