• 5S hybrid management model for increasing productivity in a textile company in Lima

      Neyra, Juanirene; Muñoz, José; Eyzaguirre, Juan; Raymundo, Carlos (Springer Verlag, 2020-01-01)
      In general, lean strategies in the textile sector are applied in production to improve productivity, reduce production time, and reduce errors, among other aspects. However, there are also documented studies, which are not common in the literature that uses these strategies to improve storage operations. This study shows the implementation of the Lean 5S Hybrid tool in the warehouse of a textile company based in Lima. The objective of the implementation was to improve productivity in the warehouse, as there were high response times when searching for materials, which reduced production time, warehouse redistribution, better using available space, and being able to strategically locate main materials. The results revealed an increase in warehouse productivity 3.95 times the initial one, an Inventory Record Accuracy of 98.17%, a decrease in the requirement search time by 66.12% (from 25 to 8 min), and stock rotation of 6.22 times.
      Acceso restringido temporalmente
    • 6TOC model for small wood furniture companies to increase machining productivity in Villa El Salvador industrial cluster

      Gutierrez, Leonel; Laredo, Jesus; Sotelo, Fernando; Raymundo, Carlos (Springer Verlag, 2020-01-01)
      This research article focuses on the application of the main engineering tools in the wood furniture manufacturing sector. It uses as an information source furniture companies of the industrial park of Villa El Salvador. Its objective is to implement 6TOC methodology based on LEAN philosophy, Six Sigma and restrictions theory, focusing on improvements to the bottleneck. Defines the product design as an ideal input for the planning and development of activities. Start to know the work environment: stations and functions, machines and tools, plant layout and ergonomics in order to increase productivity. Application of tools level operations for planning, control and execution of production. Resulted in the GDP in the year 2017 increased by 2.2%. However, the manufacturing sector of goods decreased by 5.5%, that is, it impairs GDP growth, since the wood and furniture industry, which had an aggregate gross manufacturing value of −19.9%.
      Acceso restringido temporalmente
    • Adoption of snowball sampling technique with distance boundaries to assess the productivity issue faced by micro and small cocoa producers in Cusco

      Jalca, Angie; Lopez, Marco; Sotelo, Fernando; Raymundo, Carlos (Springer Verlag, 2020-01-01)
      The food supply chain has gained impulse over the past few years induced by the rising global demand for food; therefore, much emphasis is placed upon examining this class of supply chains. It also faces constant production, storage, and distribution challenges, wherein the key link for proper operation is the farmer, who engages in the agricultural sector, heavily impacted by low crop productivity, which interfer with economic development at a national level. Consequently, it is important to assess those farmers who belong to micro and small enterprises in the agricultural sector. Due to the characteristics of the population, a nonprobability sampling technique was used to assess micro and small cocoa producers in La Convención Province, Cusco, Peru. To such end, a snowball sampling model with distance boundaries was adopted because the population is unknown and hard to reach.
      Acceso restringido temporalmente
    • Adsorption of N,N-dimethylamine from aqueous solutions by a metal organic framework, MOF – 235

      Beltrán-Suito, Rodrigo; Pinedo-Flores, Angela; Bravo-Hualpa, Fabiola; Ramos-Muñoz, Jorge; Sun-Kou, María del Rosario; msun@pucp.edu.pe (Taylor and Francis Inc., 2018)
      Water-resistant MOF-235 was used to adsorb N,N-dimethylamine (DMA) from aqueous solutions. It was synthesized from terephthalic acid and FeCl3.6H2O under air-free conditions and characterized by its crystalline structure, functional groups and temperature resistance. The kinetic data results were best adjusted to the pseudo-second order model (R2>0.963). The best-fit isotherm, Langmuir model, suggested the adsorption of DMA is localized on homogenously distributed active sites on the surface. This fit was confirmed by the value of β = 1 on the Redlich-Peterson model. Our study suggests that the manipulation of novel materials such as MOF-235 promises new avenues for water treatment solutions. Schematic structure of MOF-235 and its application as adsorbent.
    • Agile Logistics Management Model to Reduce Service Times and Improve Processes Using Lean Service Methodology in Companies in the Electrical Sector

      Palomino, Viviana Barriga; Raffo, Sotelo; Fernando, Juan Luis (Institute of Electrical and Electronics Engineers Inc., 2021-03-01)
      In recent years, according to Osinergmin, the production of electrical energy has increased up to 2.4%. This sector represents 1.5% of GDP and encompasses more than 6.6 million users, so its consumption continues at a growth rate for the country's development. This growth depends on the response time that companies today provide users; many of them operate their logistics management manually and traditionally, which leads to delays in service and dissatisfaction of both the external and internal clients. Likewise, companies in the sector, by working traditionally, do not use technology as a point of competitiveness within the market, since 60% of companies use software for their operations. To do this, an agile logistics management model is proposed that will consist of reducing purchase order attention time by 50% and improving internal processes and procedures under the Lean Service methodology. It will start by identifying the main problem and the expected objectives, then the Lean Service, Business Process Management and Agile Logistics tools will be executed, which will help to reestablish new processes and procedures.
      Acceso restringido temporalmente
    • Application of lean manufacturing in a peruvian clothing company to reduce the amount of non-conforming products

      Cuellar-Valer, Stephanie; Gongora-Vilca, Angie; Altamirano-Flores, Ernesto; Aderhold, Daniel (Springer, 2021-01-01)
      This article describes how Lean Manufacturing tools were applied in a Peruvian textile company. A production management model is proposed whose goal is to reduce the number of non-conforming products in the pants manufacturing line. For this, all information was gathered from the production area of the company under study. With the use of quality tools, the diagnosis of the current situation of the pants line was made, identifying the most significant defects, which were 19.43% of produced units in 2018. It was determined that the main causes of the observed defects refer to non-standardized sewing processes, quality control errors, non-standardized cutting processes, and poor production planning. The application of VSM and SMED allowed the correct standardization of denim pants production, TQM allowed proper control and quality management of the production process, and JIT for optimal production planning.
      Acceso restringido temporalmente
    • Application of lean manufacturing techniques to increase on-time deliveries: Case study of a metalworking company with a make-to-order environment in Peru

      Kishimoto, Kenny; Medina, Gabriel; Sotelo, Fernando; Raymundo, Carlos (Springer Verlag, 2020-01-01)
      The purpose of this paper is to provide a proposal of a production management model using lean manufacturing techniques to improve on-time deliveries of a metal-mechanic company that works in a make-to-order (MTO) manufacture of industrial fans environment. The proposal of the research refers to the implementation of a production management model in a metal mechanic company in Peru and analyze the effect in on-time delivery rate of the company. In one month of operation after the implementation of the pro-posed model, the on-time delivery rate of the company increased from 35% to 80%. Likewise, the problems present in the metalworking research company may be the same in many metalworking companies in the country, so the present investigation will serve as an example for the possible solution of the problems of other companies.
      Acceso restringido temporalmente
    • Application of Lean Techniques to Reduce Preparation Times: Case Study of a Peruvian Plastic Company

      Silva Reyes, Alfredo Jeampiere; Salas Castro, Rosa Fernanda (Research India Publications, 2017-11)
      This article examines the problem of an increase in product returns for a company that produces plastic films for flexible packaging. Among the factors that have resulted in the increase of returned products are defects in the films caused by the poor manipulation of materials and, above all, the hard point in the coils caused by excessive extruder preparation time, causing the extrusion head to overheat as well as uneven extrusion. Extrusion is a key process in the production of plastic materials as it transforms polypropylene and additives into plastic sheets. The delay in the preparation time caused by machine operators leads to the overheating of the extrusion head and, therefore, defective products that are ultimately returned to the company by customers. In order to confront this problem, a proposal was developed using the SMED tool of Lean Manufacturing in order to reduce the preparation time of the extruder and to increase the productivity of the company. For the validation of the proposal, we simulated the system to determine the resulting reduction in extruder preparation time.
      Acceso abierto
    • Applying lean agriculture in organic apple production: Case study in peru

      Gonzales-Gutierrez, Francisco; Huaman-Sanchez, Vanessa; Sotelo-Raffo, Fernando; Ramos, Edgar (Springer, 2021-01-01)
      In this document it was proposed to apply Lean Agriculture, using the five Lean principles focused on the production of organic apples, which would allow to achieve a differentiated product, through the reduction of waste, improvements in the quality of activities and the commitment of the farmers. For this, a review of the literature that corroborated the impact of the methodology was carried out. In addition, surveys were conducted, taking a sample of farmers, which evidenced the gap. Finally it was obtained as a conclusion that after the implementation of the Lean Agriculture methodology in the processes, an increase in production suitable for sale in traditional and organic markets is achieved. In addition, the increase in quality achieved a percent of production suitable for exporting.
      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
    • Basic production planning and control model based on process management to increase the productivity of mango MSEs in Casma

      Alvarado, Lizeth; Díaz, Juan; Quiroz, Juan; Raymundo, Carlos (Springer Verlag, 2020-01-01)
      The department with the greatest economic dependence on the fruit is Ancash, and the Province of Casma is most important in production, as it only produces mango; however, at the productivity level, is a marked difference of 8.2 t/ha compared to the highest worldwide producer, Mexico. Taking this data into consideration, an analysis of the MSEs producing mango in Casma was conducted and problems were seen in the management of resources and processes, both at the levels of planning and control. Considering the problems of MSEs from Casma, a basic Production Planning and Control model was designed based on Process Management and agricultural best practices. The model consists of applying process management tools, such as the flow diagram, the SIPOC turtle, data sheet indicators, procedures, and formats for each sub-process, all with the aim of better understanding the proposal’s development and increasing the productivity of MSEs.
      Acceso restringido temporalmente
    • Blockchain in Agribusiness Supply Chain Management: A Traceability Perspective

      Flores, Luis; Sanchez, Yoseline; Ramos, Edgar; Sotelo, Fernando; Hamoud, Nabeel (Springer, 2021-01-01)
      The demand for agricultural products for export is increasing every year. Thus, there is a need for a traceable and more communicative agricultural supply chain among its stakeholders. In addition, the increase in controls, verifications and communications in each SC agent makes agility and chain difficult, generating distrust among those involved. To overcome this issue, we consider Blockchain. Blockchain is a disruptive technology to decentralize data with this state-of-the-art technology, we develop a model that solves the traceability problem of the agricultural product. The model also improves transparency and security within the SC, increasing trust between the suppliers, collaborators and consumers.
      Acceso restringido temporalmente
    • Blueberry supply chain in Peru: Planning, integration and execution

      Ramos, E; Espichan, K; Rodriguez, K; Lo, W; Wu, Z; edgar_drp@yahoo.com (ExcelingTech, 2018)
      The Blueberry situation in Peru is in a stage of development, in which it is necessary to incorporate good management practices as well as productive to raise the competitiveness of the enterprises. The findings were synthesized and analyzed, to propose improvements and to support the growth of the small companies in the long term. The improvement proposal is based on the best practices and supply chain models applied in the industry. Also, the research was based on sources of information from researchers with experience in evaluating and analyzing the supply chain of the perishable sector in different scenarios worldwide.
      Acceso restringido temporalmente
    • Cold Supply Chain Logistics Model Applied in Raspberry: An Investigation in Perú

      Tardillo, Mijail; Torres, Jorge; Ramos, Edgar; Sotelo, Fernando; Dien, Steven (Springer, 2021-01-01)
      This research describes the viability of the processes in the logistics industry of the cold chain of raspberries in Peru. The cultivation of raspberries is in the stage of potential growth opportunities for agribusiness. Output logistics is an essential part of the management of the food supply chain; this improves performance and quality in the fresh product. The cold chain and proper practice techniques preserve quality and reduce raspberry production losses by 15%. This model is based on scientific articles that are the theoretical pillars for the process methodology that develops the competitiveness of the product.
      Acceso restringido temporalmente
    • Collaborative model to reduce stock breaks in the peruvian retail sector by applying the s&op methodology

      Paredes-Torres, Franco; Almeyda-Crisostomo, Genesis; Viacava-Campos, Gino; Aderhold, Daniel (Springer, 2021-01-01)
      The retail sector is a growing industry, however with serious problems associated with inventories such as stock breakage. This article proposes a collaborative model applying the S&OP methodology to reduce stock breakages in a Peruvian company in the retail sector through a purchasing plan designed by the interaction and participation of different actors in charge of the process. The results of the model are measured by the percentage of stock breaks, the demand forecast error and the increase in sales. In the diagnosis of the problem two factors were identified that cause the stock breaks. The first is caused by the delay that exists in the replenishment of inventories, due to the bad programming of delivery of products between the distribution center and the stores. The second is related to the insufficient amount of purchases caused by not properly categorizing the products, poor forecast and not having safety inventory policies. A simulation resulted in a 17% stock breakage reduction, a 17% forecast error decrease, and a 15% sales increase.
      Acceso restringido temporalmente
    • Combined method redesign for the packing area in a peruvian bakery sme provider of national food programs

      Quintanilla-Anicama, Mario; Congona-Garcia, Johana; Carvallo-Munar, Edgardo; Macassi-Jauregui, Iliana; Cardenas, Luis (Springer, 2021-01-01)
      In the bakery industry, it is sought to have zero defective products. It is in the packing; where it is evident, as the last area of the production chain, all the defects generated. Therefore, a combined redesign method is proposed, which consists in the use of Economy of Movement, Ergonomics, Poka Yoke and Method Engineering to reduce defective products in SMEs in the bakery industry. The losses of these generate a reduction of 29.50% for crushed bread and 19.67% of bread on the floor, reducing with the use of this method to 16.20% and 8.38% respectively.
      Acceso restringido temporalmente
    • Combined Model of Lean Six Sigma and Work Method for a Peruvian Ammunition Manufacturing

      Mego-Aranguri, Cristhian; Roque-Soriano, Maria; Carvallo-Munar, Edgardo; Salas-Castro, Rosa; Cardenas-Rengifo, Luis (Institute of Electrical and Electronics Engineers Inc., 2020-09-30)
      In the arms industry, quality is essential because its products are used for special purposes. Therefore, in production, the rate of defective products is low. This study proposes a model to reduce the number of defective products based on the combined use of the Six Sigma and work method tools. For the purposes of this study, the production process of the 7.62 mm ammunition was analyzed because it presents several issues that affect product quality. The current methods and procedures of the production process were analyzed to identify the root causes of the problem and to provide a solution. After implementing the model, defective products were reduced from 20% to 13.67%..
      Acceso restringido temporalmente
    • Continuous improvement model for inventory planning applying MRP II in small and medium sized enterprises

      Villafuerte, Hugo; Viacava, Gino; Raymundo, Carlos (Springer Verlag, 2020-01-01)
      Planning of resources is a powerful tool in the field of supply chain management and control and in general. Global large-scale companies and enterprises have this implemented in their planning processes. Today, experts in the subject have found issues regarding the implementation of such tools in small- and medium-sized enterprises (SMEs). Therefore, this paper aims to develop an application for the methodology of continual improvement of processes, referred to as the Deming cycle or Plan–Do–Check–Act (PDCA), which adapts to continuous improvements of processes and products in SMEs. The methodology was modeled in a SME dedicated to manufacture and distribution of wine and products (wine and Pisco). The model was simulated through a simulation software, obtaining results of improvement regarding problems like break of stock, taking into account the satisfaction of the client, productivity in the delivery, and shipment time.
      Acceso restringido temporalmente
    • Designing a Procurement Management Model to Reduce Project Delays in a Hydraulic and Automation Systems Company

      Vereau, Melanie; Rojas, Jose; Aderhold, Daniel; Raymundo, Carlos; Dominguez, Francisco (Springer Verlag, 2020-01-01)
      This study focuses on the factors that cause project delays in an industrial hydraulic company. More specifically, the article also addresses the development of on-demand engineered products and the impact of the procurement process on delays. As part of the investigation, the authors assessed the historical data of the projects completed in 2017 before determining the critical path for each project in an attempt to identify which project stages may be improved. After further assessing the resulting data, the planning and procurement procedures were deemed as requiring improvement. Next, the article proposes a training plan and new procedures based on the Project Management Body of Knowledge guidelines for Engineer-to-Order projects. In conclusion, the results showed that delays were effectively reduced after implementing these new procedures in both Project Management stages.
      Acceso restringido temporalmente
    • Development of a hybrid heating system based on geothermal–photovoltaic energy to reduce the impact of frosts on inhabitants of rural areas in the ring of fire, southern Peru

      Chavarria, Dana; Ramos, Rubi; Raymundo, Carlos (Springer Science and Business Media Deutschland GmbH, 2019-01-01)
      The recent climate change has forced people to live in extreme conditions, either excessive heat or cold, implying that they must adapt to survive in these situations. However, there are people who, because of their geographical condition and lack of resources, lack the means and tools to combat these climate changes. The context of this study is provided in a rural town located in the Arequipa region (Peru), whose inhabitants have to fight against frosts of up to −20 °C in an area without electricity. A viable solution to this problem is found through the design and implementation of a heating system using geothermal and photovoltaic energy, which are resources found in the area, according to a report of the Ministry of Energy and Mines. This study analyzes and researches the geographical and meteorological conditions of the region, for validating, through theory and simulations, whether the proposed system can supply the thermal energy required to maintain the indoor temperature at a minimum of 15 °C under extreme conditions. The system is designed after analyzing the best technological options and techniques currently available in the context studied for its ultimate financing and establishing guidelines and indicators for monitoring results.
      Acceso restringido temporalmente