Centro de Innovación de la Cadena de Valor
URI permanente para esta colecciónhttp://54.81.141.168/handle/123456789/166748
Este centro promueve el estudio de los problemas más relevantes para las etapas de la cadena de valor y se evalúan las nuevas tecnologías que están reconfigurando la industria. Estudia la cadena de valor en: la operación logística, la innovación, la promesa de la inteligencia artificial y temas afines.
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Ítem Acceso Abierto Joint chance-constrained reliability optimization with general form of distributions(CENTRUM Publishing, 2014) Vincent, Charles; Islam Ansari, Saifu; Khodabakhshi, MohammadProbabilistic or stochastic programming is a framework for modeling optimization problems that involve uncertainty. Stochastic programming models arise as reformulations or extensions of reliability optimization problems with random parameters. Moreover, the resource elements vary and it is reasonable to consider them as stochastic variables. In this paper, we describe the chance-constrained reliability stochastic optimization (CCRSO) problem for which the objective is to maximize the system reliability for the given joint chance constraints where only the resource variables are random in nature and which follow different general form of distributions. Few numerical examples are also presented to illustrate the applicability of the methodology.Ítem Acceso Abierto A model for predicting attitudes towards spanish product, brands and country image: An exploratory international study(CENTRUM Publishing, 2015) Cerviño, Julio; Rivera Camino, Jaime EduardoThis article aims to respond to recent demands for more in-depth study on how consumers use brand-associated images to shape their attitudes to buying. A multi-attribute design is used to analyze how certain variables among buyers (ethnocentrism and similarity) are related to brand images (country and product) in the formation of attitudes within an international context. This research is based on a sample of 215 international experts from 31 countries whose responses were analyzed with structural equation modeling. The results obtained have implications for academics, government officials and directors of international marketing. Among the contributions made by the present study is its attempt to clarify the existing literature regarding the causes and effects of brand images and, as well, the measures it develops to make certain key variables (as indicated in the literature) operational.Ítem Acceso Abierto Sensory Profile and Stability of a New Ready-to-Drink Passion Fruit Juice Beverage with Different Sweetener Systems(CENTRUM Publishing, 2012) De Marchi, Renata; Montes-Villanueva, Nilda Doris; McDaniel, Mina R.; Bolini, Helena Maria AndréThe aim of this work was to determine the sensory profile and stability of a new ready-to-drink passion fruit juice beverage sweetened with different sweetener systems: sucrose, aspartame, sucralose and an aspartame/acesulfame-K blend (4:1), during six months of storage. Samples of each beverage were stored at room temperature and under refrigeration, and were evaluated at 0, 60, 120 and 180 days of storage. Descriptive sensory profiles and the stability of the beverages were determined using a trained panel (n=8). The sweetener type played a very important role in the perception of color, sweet taste, sweet aftertaste and sour aftertaste. The beverages sweetened with sucrose and sucralose were the most stable with respect to those characteristics. In the beverages containing aspartame, on the other hand, the intensities of those descriptors were only preserved if stored under refrigeration. Storing the beverages under refrigeration was crucial to preserve the fresh fruit aroma and flavor characteristics in all the beverages, independently of the sweetener type, during at least 120 days of storage, period after which those characteristics started to decrease at the same time as the canned fruit aroma and flavor, overripe fruit aroma and fishy aroma and flavor increased. The results indicated that, based on the sensory profile, the best option of sweetener to be used in the ready-to-drink natural passion fruit juice beverage studied was the sucrose for the standard version and the sucralose for the light version.Ítem Acceso Abierto Coverage-Based Service Vehicle Routing when only some Tasks are Known in Advance(CENTRUM Publishing, 2012) Larco Martinelli, José Antonio; Dekker, Rommert; Kaymak, UzayIn this paper we deal with a common problem found in the operations of security and preventive/corrective maintenance services: that of routing a number of mobile resources (vehicles) to perform foreseen and unforeseen tasks during a shift. We define the (Stochastic Service Team Orienteering Problem) SSTOP as the problem of making a routing strategy to maximize the expected weighted number of tasks served within the specified time-windows. To obtain solutions to this problem, we propose to solve successively the Coverage Team Orienteering Problem with Time Windows (C-TOPTW). The C-TOPTW considers information related to known tasks and also information about the arrival process of new unforeseen tasks. We find that the information about the arrival process of new unforeseen tasks is of value in generating routes for vehicles to maximize the expected proportion of tasks accomplished within the specified time windows.Ítem Acceso Abierto Factors Influencing the Purchasing Decision within a Hypercompetitive and Hyperlocalized Market: The Case of the Chilean Pharmacies Market(CENTRUM Publishing, 2015) Arias Bolzmann, Leopoldo Gabriel; Hevia, Hector; Shurmann, FranciaThe study identifies the qualitative and quantitative variables that influence a consumers’ pharmacy store selection within a hypercompetitive market. The market studied is also characterized by the hyperlocation of multiple store brands in a relatively close distance. In addition, the study investigates the average distance a consumer walks from their point of origin to the store. Qualitative results indicate that emotional and rational influences differ by age group; however, all groups expect high quality service. Quantitative results indicate store selection is influenced by the perception of lowest prices, service, product assortment and frequent buyer discounts. Loyalty was found to be linked to age of the customer. Finally, consumers willing to compare prices are more likely to walk longer distances. Loyalty reduces such distances by approximately twenty percent.Ítem Acceso Abierto A Satisficing DEA Model to Measure the Customer-based Brand Equity(CENTRUM Publishing, 2015) Vincent, Charles; Zavala, JorgeEver since the inception of brand values, these have become a benchmark for many data-driven strategies, eventually providing a basis for vertical/horizontal integrations, as well. In recent decades, brands have become comparable across the industries, based on their value derived either from the customer perception or in terms of the firm financials. Numerous models have been developed in time to measure the customer-based brand equity; nevertheless, they all evaluate brand equity in an absolute sense. The present research paper provides an avenue to measure the customer-based brand equity in a relative sense using a satisficing DEA model. The information for this model has been collected through a customer-based survey questionnaire in line with predefined brand equity dimensions, which have been verified through a confirmatory factor analysis. We demonstrate the approach by means of applying the proposed model to measure the efficiency of cell phone brands.Ítem Acceso Abierto Acceptance and purchase intention of irradiated foods in Brazil: Effect of positive information(CENTRUM Publishing, 2012) Martins, Cecilia G.; Behrens, Jorge Herman; Montes-Villanueva, Nilda Doris; Bernadette Dora Gombossy de Melo, Franco; Landgraf, MarizaFood irradiation remains underutilized in Brazil, despite the approval and regulation of the official health authority since 1973. However, consumers risk perception, mostly due to lack of information about the technology, seem to be the main barrier to the adoption of food irradiation by the Brazilian industries, like in other countries. The aim of this study was to investigate the effect of information on the acceptance and purchase intention of minimally processed and irradiated organic watercress (Nasturtium officinale). Consumers (N=236) participating in the sensory acceptance test were divided into four experimental groups according to an experimental design which combined presence or absence of information about the food irradiation process – main characteristics, benefits to food safety and preservation, cost-benefit and environmental issues - and identification or not of the irradiated product in a sensory acceptance test. Results did not show significant effect (p>0.05) of information either on acceptability or in purchase intention of the irradiated product compared to the non irradiated counterpart, although an exploratory statistical analysis revealed underlying patterns suggesting that consumers segmentation must exist as well as favorable and unfavorable attitude to food irradiation.Ítem Acceso Abierto El ISO 9001 y TQM en las empresas de Colombia(CENTRUM Publishing, 2015) Benzaquen De Las Casas, Jorge; Convers, JorgeEl presente estudio muestra el impacto de tener un Sistema de Gestión de Calidad (SGC) con ISO 9001:2008 de las empresas en Colombia en base a nueve factores de éxito usados para medir la implementación de la Administración de la Calidad Total (TQM). Se analizaron 207 empresas con la finalidad de hacer una comparación entre las que tienen dicha certificación y aquellas que no la tienen. Asimismo, se propone que la metodología empleada en este estudio se aplique en otros países latinoamericanos.Ítem Acceso Abierto Measuring the Performance of a Dehydration Plant of Apples(CENTRUM Publishing, 2015) Sánchez Ramírez, Rodrigo Antonio; Vincent, Charles; González Araya, Marcela; Paliza, Juan CarlosGiven the importance of the Chilean dried-fruit market and the characteristics of the industrial process of dehydration, it becomes imperative for companies to measure the efficiency of their production processes in order to identify critical areas and take the necessary actions to improve them. Hence, the present work performs an efficiency analysis for the production of dried apples in a plant of the Maule region, Chile. The methodology used is Data Envelopment Analysis, considering both discretionary and non-discretionary variables. The results indicate that the application of the model without non-discretionary variables shows higher efficiency indices than the model with non-discretionary variables. Additionally, the efficiency analysis results, segregated by variety, origin, and fruit type, indicate that the selection of these segregations could be used to increase the production or generate higher efficiencies. Finally, the technological change in the same plant is analysed through the Malmquist index. The findings of this research could help improve the decision-making process of managers concerned with the efficient use of resources within the company.Ítem Acceso Abierto A translation invariant pure DEA model(CENTRUM Publishing, 2015) Vincent, Charles; Färe, Rolf; Grosskopf, ShawnaThis short communication complements the DEA model proposed by Lovell and Pastor (Eur. J. Oper. Res. 118 (1999), 46-51), by incorporating both positive and negative criteria in the model. As such, we propose a DEA model, known as pure DEA, using a directional distance function approach.