Recent Submissions

  • Lean Thinking Simulation Model to Improve the Service Performance in Fast Food

    Sandoval, Diana; Palomares, Manuela; Rojas, Jose; Mendoza, Pablo; Raymundo, Carlos (2021-01-01)
    The fast food industry, specifically the service department, has experienced sustainable economic growth and has evolved in the application of substantial methods, however, it has presented a slowdown due to deficient operation level provided in the customer service area. A large number of customers do not make the purchase owing to a series of unmet trends that face the consumer behaviour which leads to significant economic losses and inefficient service. They have therefore focused their efforts on finding impulse mechanisms through allowing them to migrate to less costly processes and/or to achieve better utilisation of available resources without success. This research inquires into the effectiveness of the Lean Thinking Simulation (LTS) model, which consists in the development of a set of methodological phases and the adaptation of the technological support termed as Digital Change to improve the performance of customer service in Peruvian fast food. The main result of this practical study was defined by a Dashboard in real-time, and as a first approximation of the model, a 17.03% improvement can be shown in the performance of customer service on the fast food selected.
  • Resilience mediates the relationship between household dysfunction in childhood and postpartum depression in adolescent mothers in Peru

    Carroll, Haley; Rondon, Marta B.; Sanchez, Sixto E.; Fricchione, Gregory L.; Williams, Michelle A.; Gelaye, Bizu (2021-01-01)
    Acceso abierto
  • A Mechanical Development of a Dry Cell to Obtain HHO from Water Electrolysis

    Salazar, Gustavo; Solis, Wilmer; Vinces, Leonardo (2021-01-01)
    This article proposes a mechanical development of a dry cell in order to obtain HHO through water electrolysis. Calculations and technical specifications of the materials used for implementation are supported by mathematical, physical and chemical formulas and theories (Faraday´s Law, electrolysis process and mechanical design). The importance of mechanical design is focused on achieving efficient use of the energy provided to the cell that allows the H2 and O2 molecules to be separated without overheating the cell, evaporating the water, loss of current due to the geometry of the electrodes (Foucault Current). Moreover, choosing materials for proper implementation and physical robustness is mandatory. In addition, the mechanical design is not justified in different articles. Nevertheless, the mechanical design of the cell and the efficiency in the production of HHO are related. Therefore, the mechanical design and the calculations were performed, as well as the construction of the dry cell to obtain HHO. The results of the implementation and production were placed and compared with what theoretically the dry cell should produce from the law of Faraday. Finally, the volumetric flow of HHO obtained was 2.70 L per minute. It means a production efficiency of 98.68%. It is higher than the majority of the dry cells.
    Acceso abierto
  • A Geometric Design of Traffic-Light Roads Crossing Using the Continuous Flow Intersections Methodology to Reduce Points of Primary Conflicts Caused by Left Turns

    Chuco, Betsi; Pérez, Carlos; Silvera, Manuel; Campos, Fernando (2021-01-01)
    The continuous flow intersections (CFI) increase the operational capacity of road systems with congestion problems, by using shared lanes located at the access points before the intersection. However, the CFI presents road safety risks that increase the likelihood of vehicle collision. This article proposes a geometric design composed of raised delineators at a traffic-light intersection, whose objective is to eliminate the points of primary conflicts caused by the left turns of the vehicles. To do this, a study was conducted to identify the different maneuvers present in a wide cross-type intersection in a commercial area located in the city of Lima. A total of 3219 vehicles was collected, of which 561 vehicles turned left demonstrating the high density of this type of maneuver. The effectiveness of the proposed design is validated using a microsimulation in the Vissim program. The results show that it was reduced from 58 to 8 points of conflict, increasing operational capacity by 34.97%. Finally, the risks caused by CFI decreased by 83%.
  • Supply chain cost research: a bibliometric mapping perspective

    Ramos, Edgar; Dien, Steven; Gonzales, Abel; Chavez, Melissa; Hazen, Ben (Emerald Group Publishing Ltd., 2020-01-01)
    Purpose: The purpose of this paper is to review the literature on logistics and supply chain costs to provide an analysis of sources of publication, citations and authorship using bibliometric analysis techniques (VOSviewer and CitNetExplorer tools). Design/methodology/approach: A review of 756 articles published during the period 2014 to 2019 referenced in the Scopus database was performed. The review was limited to articles published in English and directly related to logistics and supply chain costs. Findings: The research identified more than 2,000 authors representing more than 5,000 keywords and 10,000 references from a total of 155 journals investigated. A critical synthesis of the resulting data revealed several insights about various aspects of studies in this field. For instance, the review identified a scarcity of academic publications in three key areas, namely “supply chain,” “optimization” and “transportation”, which are concepts focused on the total supply chain. Originality/value: This research highlights important areas of attention for both researchers and practitioners considering costs associated with logistics and supply chain operations and strategies. The results can also help identify thematic areas, journals and topics for future research. The paper identifies and proposes research areas to contribute to the literature when challenges to investigating logistics and supply chain costs are discussed.
    Acceso restringido temporalmente
  • The value of supply chain integration in the Latin American agri-food industry: trust, commitment and performance outcomes

    Ramirez, Manuel Jesus; Roman, Ivonne Eliany; Ramos, Edgar; Patrucco, Andrea Stefano (Emerald Group Publishing Ltd., 2020-01-01)
    Purpose: This paper aims to explore the antecedents and performance outcomes of supply chain integration in the agri-food industry in Latin America, a context that the literature on supply chain management has not extensively addressed. The quinoa supply chain, an industry that has encountered a boost in market demand in the past year, is selected as the unit of analysis. Supply chain integration dynamics are analyzed to provide recommendations about integration strategies and benefits in the agricultural sector. Design/methodology/approach: A conceptual model was designed in this study, which includes the drivers (i.e. trust and commitment) and outcomes (i.e. operational and economic performance) of supply chain integration. The relationships were verified through a unique survey, the data of which were collected from 79 respondents operating at different levels of the Peruvian quinoa supply chain (i.e. suppliers, producers and customers). The proposed hypotheses were tested through the partial least squares (PLS) regression. Findings: The results underscore the relevance of trust and commitment as enablers of supply chain integration initiatives in the agri-food industry. These factors are particularly essential for involving the farmers who are the most upstream actors in the supply chain and characterized by unstructured organizations. A high level of integration in these types of supply chain enhances the capacity to improve operational performance, which in turns positively affects the main economic indicators. Originality/value: This study contributes to the discussion of supply chain integration in the agri-food industry, which remains unexplored thus far. It relies on a multitier collection of responses, which is extended to all the levels of the quinoa supply chain, thereby providing the study with a unique depth of analysis. Furthermore, this work contributes to the ongoing discourse on the performance impact of supply chain integration, which several SCM scholars have recently questioned.
    Acceso restringido temporalmente
  • Service level of pharmaceutical supply chain applying optimal policy: Case study in Lima, Peru

    Arana, Kevin; Flores, Katherinee; Ramos, Edgar; Pettit, Timothy; Flanigan, Monica (ExcelingTech, 2020-01-01)
    The present research seeks to show the importance of applying process management techniques and food safety norms in the operational processes of the supply chain to know the meaning and the need for an integrated hybrid model. The article reviews the sugarcane distillery sector of Peru and its main operational problems. Based on the literature reviewed and discussed with academics who have knowledge of the food supply chain, an integrated hybrid model was developed to help any distillery with lower levels of competitiveness than its competitors in other sectors, such as pisco, applying techniques of process management and food safety to increase the efficiency of liquor distilleries. The findings confirm that distilleries can increase their efficiency, thanks to the higher performance of their operations after their alignment with the integrated model.
    Acceso restringido temporalmente
  • Inventory management model based on lean supply chain to increase the service level in a distributor of automotive sector

    Ramos, Edgar; Pettit, Timothy J.; Flanigan, Monika; Romero, Luis; Huayta, Katherine (ExcelingTech, 2020-01-01)
    The present research seeks to show the importance of applying process management techniques and food safety norms in the operational processes of the supply chain to know the meaning and the need for an integrated hybrid model. The article reviews the sugarcane distillery sector of Peru and its main operational problems. Based on the literature reviewed and discussed with academics who have knowledge of the food supply chain, an integrated hybrid model was developed to help any distillery with lower levels of competitiveness than its competitors in other sectors, such as pisco, applying techniques of process management and food safety to increase the efficiency of liquor distilleries. The findings confirm that distilleries can increase their efficiency, thanks to the higher performance of their operations after their alignment with the integrated model.
    Acceso restringido temporalmente
  • Towards a hybrid conceptual operational management model of canazo supply chain: A research on the sugar-cane spirit from Peru

    Imberti, Arturo; Ramos, Edgar; Provost, Kelsey; Basu, Anshuman Neil (ExcelingTech, 2020-01-01)
    The present research seeks to show the importance of applying process management techniques and food safety norms in the operational processes of the supply chain to know the meaning and the need for an integrated hybrid model. The article reviews the sugarcane distillery sector of Peru and its main operational problems. Based on the literature reviewed and discussed with academics who have knowledge of the food supply chain, an integrated hybrid model was developed to help any distillery with lower levels of competitiveness than its competitors in other sectors, such as pisco, applying techniques of process management and food safety to increase the efficiency of liquor distilleries. The findings confirm that distilleries can increase their efficiency, thanks to the higher performance of their operations after their alignment with the integrated model.
    Acceso restringido temporalmente
  • Applying lean maintenance to optimize manufacturing processes in the supply Chain: A Peruvian print company case

    Ramos, Edgar; Mesia, Ron; Alva, César; Miyashiro, Rudy (ExcelingTech, 2020-01-01)
    This research analyzes the Peruvian organic production coffee industry, the relationship between Supply Chain Management (SCM) and Supply Chain Integration (SCI) concerning the performance of the Cooperatives and the Coffee Associations in Junin Region of Peru. It also analyzes the current scenario of the Coffee Sector and the participation of the Supply Chain (SC) in the processing and distribution of Organic Coffee in Junin, Peru. A diagnosis was made to the certified organizations from the market. The diagnosis and the surveys indicated that they do not have a correct flow of information, shared goals and objectives, strategic decisions, and sourcing materials among the different parties demonstrating the lack of interrelationship among the members. The final objective of this research is to improve the competitiveness of these organizations through the increase in the performance of the SC, for which a model of supply chain integration is proposed.
    Acceso restringido temporalmente
  • The impact of asparagus supply chain quality management: An empirical research from Peru

    Ramos, Edgar; Provost, Kelsey; Calle, Stephanie; Zavala, Kevin (ExcelingTech, 2020-01-01)
    This research analyzes the Peruvian organic production coffee industry, the relationship between Supply Chain Management (SCM) and Supply Chain Integration (SCI) concerning the performance of the Cooperatives and the Coffee Associations in Junin Region of Peru. It also analyzes the current scenario of the Coffee Sector and the participation of the Supply Chain (SC) in the processing and distribution of Organic Coffee in Junin, Peru. A diagnosis was made to the certified organizations from the market. The diagnosis and the surveys indicated that they do not have a correct flow of information, shared goals and objectives, strategic decisions, and sourcing materials among the different parties demonstrating the lack of interrelationship among the members. The final objective of this research is to improve the competitiveness of these organizations through the increase in the performance of the SC, for which a model of supply chain integration is proposed.
    Acceso restringido temporalmente
  • Organic coffee supply chain source process integration: A Peruvian case

    Ramos, Edgar; Mesia, Ron; Matos, Daniel; Ruiz, Sara (ExcelingTech, 2019-01-01)
    This research analyzes the Peruvian organic production coffee industry, the relationship between Supply Chain Management (SCM) and Supply Chain Integration (SCI) concerning the performance of the Cooperatives and the Coffee Associations in Junin Region of Peru. It also analyzes the current scenario of the Coffee Sector and the participation of the Supply Chain (SC) in the processing and distribution of Organic Coffee in Junin, Peru. A diagnosis was made to the certified organizations from the market. The diagnosis and the surveys indicated that they do not have a correct flow of information, shared goals and objectives, strategic decisions, and sourcing materials among the different parties demonstrating the lack of interrelationship among the members. The final objective of this research is to improve the competitiveness of these organizations through the increase in the performance of the SC, for which a model of supply chain integration is proposed.
    Acceso restringido temporalmente
  • Modeling the distribution of organic coffee Supply Chain from Junín region, Peru

    Ramos, Edgar; Mesia, Ron; Cavero, Carlos; Vera, Brenda; Wu, Zilin (ExcelingTech, 2019-01-01)
    This research uses Supply Chain (SC) data gathered during the distribution and transportation activities of organic coffee. The purpose of this research is to analyze different ways in which crop-chain solutions are adopted in the region of Junín, Peru. The disintegration of the SC is revealed, as each cooperative member works uncoordinatedly on his own leading to different results standards with high costs and low returns. The study focused on different entities from farmers to the port of Callao of an organic coffee supply chain where disintegration is constant. The paper describes a misaligned supply chain including poorly collaboration. All problems found will be an opportunity to develop a distribution model in the organic coffee supply chain of Junín region.
    Acceso restringido temporalmente
  • Development of supply chain quality management in peruvian blueberry companies: A case study in Cañete, Peru

    Ramos, Edgar; Yanayaco, Jean Pierre; Hinostroza, Tamy; Mesia, Ron (ExcelingTech, 2019-01-01)
    The keen research objective is to develop a quality system in the Supply Chain Management geared to the agribusiness sector. The Supply Chain Quality Management (SCQM) proposed for blueberry companies must improve their operational performance. This study includes micro and small agricultural enterprises located in the Cañete region of Peru, where thanks to the interviews and questionnaires were possible to determine the critical practices, which will be applied in the agribusiness sector. The literature review found to enrich the methodical procedures that are essential practices of the innovative SCQM model. The research shows that the critical practices to develop quality management in this sector are Customer Relationship Management, Supplier Relationship Management, Process Management, and Human Resources Management. This research turns out to be utterly innovative because the use of the recently proposed technique of Quality Management into the Supply Chain combined with the best practices will lead to operational improvement andother qualitative advantages.Finally, the knowledge embedded in SCQM applied to small blueberry companies in an emerging country can provide added value to management to increase the competitiveness of the agribusiness sector.
    Acceso restringido temporalmente
  • Lean Six Sigma Fleet Management Model for the Optimization of Ore Transportation in Mechanized Underground Mines in Peru

    Huaira-Perez, Jorge; Llerena-Vargas, Orlando; Pehóvaz-Alvarez, Humberto; Solis-Sarmiento, Hugo; Aramburu-Rojas, Vidal; Raymundo, Carlos (2021-01-01)
    Mining activities around the world are undergoing constant change and modernization owing to technological and scientific advancements. Consequently, there are frequent proposals to streamline and enhance processes in mining operations. This study deals with ore transportation in mechanized mining units and aims to optimize fleet management using the Lean Six Sigma methodology to obtain a model in this specific process. The proposed method was implemented using a Lean Six Sigma instrument known as DMAIC (Define, Measure, Analyze, Improve, and Control). The case study was applied to an underground mine located in the Huancavelica region, Peru. The simulation showed that 24% of the time in the ore transport cycle is un-productive time and the improvement potential time represents 53% of the transportation process time.
  • Daily Control System for the Construction of Multi-family Building Projects

    Fernandez, Diego; Zamora, Yeffry; Rodriguez, Sandra; Vilcapoma, Jorge (2021-01-01)
    Construction projects for buildings, in the execution stage, show a variation of the real with respect to what is planned in the budget. The consequence of this lag presented usually causes large economic losses. Given this situation, in the construction industry, various control systems have been developed that have as a final deliverable a frequent management report, which serves to make decisions regarding the analyzed, whose results are applied and evaluated after a specific period of time. These management reports have good results at the time of their application; however, data processing, analysis execution, and decision making take approximately 30 days. In this sense, the present investigation proposes to develop a control system focused in real time, generated by the daily control in the execution stage. The results show a reduction of waste in the main resources of multi-family building projects, and this is in labor and materials, identifying the causes that originate them and suggesting generic solutions, at the end of the workday.
  • Algorithm for Detection of Raising Eyebrows and Jaw Clenching Artifacts in EEG Signals Using Neurosky Mindwave Headset

    Vélez, Luis; Kemper, Guillermo (2021-01-01)
    The present work proposes an algorithm to detect and identify the artifact signals produced by the concrete gestural actions of jaw clench and eyebrows raising in the electroencephalography (EEG) signal. Artifacts are signals that manifest in the EEG signal but do not come from the brain but from other sources such as flickering, electrical noise, muscle movements, breathing, and heartbeat. The proposed algorithm makes use of concepts and knowledge in the field of signal processing, such as signal energy, zero crossings, and block processing, to correctly classify the aforementioned artifact signals. The algorithm showed a 90% detection accuracy when evaluated in independent ten-second registers in which the gestural events of interest were induced, then the samples were processed, and the detection was performed. The detection and identification of these devices can be used as commands in a brain–computer interface (BCI) of various applications, such as games, control systems of some type of hardware of special benefit for disabled people, such as a chair wheel, a robot or mechanical arm, a computer pointer control interface, an Internet of things (IoT) control or some communication system.
  • Use of Data Acquisition Technologies to Optimize Construction Progress Monitoring Times in Residential Buildings

    Aronés, Marisol; Mendoza, Andrea; Rodriguez, Sandra; Ramirez, Humberto (2021-01-01)
    The monitoring systems that are currently used as part of the management of construction projects consist of collecting the field information, documenting it manually and then digitizing it. Those responsible for carrying out the reports through this procedure dedicate between 28% and 41% of their time daily for their preparation. This traditional process is slow and inefficient because the information is dispersed in different documents, so data can be omitted, causing that no corrective actions are taken in a timely manner. Likewise, the construction sector has little use of technological resources, and therefore, there is no automated process, which makes it difficult to monitor construction projects in an efficient way. In this sense, this research establishes the optimization of the control procedure through the use of a data acquisition tool to reduce the man-hours used in advance control. With the application of this proposal, the hours spent by the personnel involved in project management were reduced by 30%.
  • Lean Manufacturing Model Adapted for Waste Reduction in Peruvian Condiment Production Agri-Businesses

    Mesones-Guillén, Axel; Palacios-Jesús, Lizeth; Carvallo-Munar, Edgardo; Salas-Castro, Rosa; Cardenas-Rengifo, Luis (2021-01-01)
    The Peruvian export supply is primarily based on the segment of dressings and condiments. This paper seeks to adapt lean manufacturing tools using Poka-Yoke techniques and process standardization, which may align with existing processes to prevent production errors. This combination of tools is expected to reduce the percentage of waste generated throughout the condiment production process. Subsequent to an initial evaluation of the current method combined with the application of both the tools, 11.4% waste reduction was ultimately reported.
    Acceso abierto
  • A Strategic Lean Procurement Model Based on Supplier Approval to Reduce Unplanned Downtime in a Textile Small and Medium-Sized Enterprises

    Ramirez-Mitma, Maricarmen; Rojas-Garcia, Jose; Torres-Sifuentes, Carlos; Raymundo, Carlos (2021-01-01)
    In Peru, companies within the textile sector encounter problems such as a decrease in the contribution to an industrial gross domestic product from 10.6 to 7.5%, a decline in financial credits by about 0.7% p.a., and the direct competition of Central American countries across the textile chain. The finishing of fabrics shows the worst performance, with losses of a 38.8% variation in industrial production and a 7.5% growth rate per textile industrial sector. In this scenario, a strategic lean procurement model based on 5S and supplier approval was designed. The lean objective is to streamline workflow in the raw material warehouse that generates excessive lead time to production and leads to unplanned downtime. In addition, supplier approval boosts procurement efficiency and provides strategic value in assessing and planning raw materials to ensure efficient supply. The model is validated through a case study involving a textile small and medium-sized enterprise (SME), and drastic improvements are made. These improvements address the problem of unplanned downtime by reducing its incidence and making economic contributions to the company.

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