Diego Tlapa

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Autonomous University of Baja California | UABC · Facultad de Ingeniería, Arquitectura y Diseño (Ensenada)

Given the growing interest in manufacturing’s environmental effects, understanding the impact of improvement strategies on sustainability is critical. This study focuses on the implementation of Green Lean Six Sigma (GLSS) in the Mexican manufacturing sector, an area where research is limited, particularly concerning the barriers to successful outc...

Driven by the digital transformation currently pursued by organizations, artificial intelligence (AI) applications have become more frequent. Nevertheless, its impact on employees’ behaviors and attitudes is still poorly known. As employees’ engagement (EE) is a key element for a successful Lean Production (LP) implementation, there is the need to...

Purpose The objective of this article is to identify the relationships between the enablers in the implementation of Green Lean Six Sigma (GLSS) in the Mexican manufacturing industry (MMI). Design/methodology/approach To create the survey instrument, the authors did an extensive literature research, which they then applied in the MMI to find the r...

This paper aims to provide new insights for organizations that have decided to implement a Quality Management System (QMS) based on the ISO 9001 standard as a strategy for continuous improvement and gaining competitive advantage. This objective is achieved through statistically modeling the causal relationships between the Critical Success Factors...

The floriculture industry is an increasing sector in Baja California, that exports most of its production. Products like decorative wreaths depend mainly on human inspection, which has often been prone to human errors and challenges in meeting the quality criteria. Implementing advanced technologies and automated inspection methods in floriculture,...

Quality assurance through visual inspection plays a pivotal role in agriculture. In recent years, deep learning techniques (DL) have demonstrated promising results in object recognition. Despite this progress, few studies have focused on assessing human visual inspection and DL for defect identification. This study aims to evaluate visual human ins...

As a consequence of the development of AM, strategies have been developed to optimize the printing process, which focuses on reducing manufacturing time, such as using genetic algorithms (GAs), among others. The effect caused by the modification of path patterns is an effect of interest in two aspects: dimensional assurance focused on the complianc...

This article aims to provide valuable new insights into organizations implementing Lean Manufacturing (LM) as a continuous improvement strategy, focusing on those which are reducing waste in order to increase their competitiveness. A statistical approach was used to model the causal relationships between LM Critical Success Factors (CSFs) to achiev...

Purpose This paper aims to identify the relationships among critical success factors (CSFs) for lean six sigma (LSS) implementation in higher education institutions (HEIs). Design/methodology/approach An extensive literature review was conducted to design the survey instrument, which the authors later administered in Mexican public HEIs to identif...

During the last decade of the 20th century, there has been significant growth in the applications and development of manufacturing processes associated with Additive Manufacturing (AM). The evolution of production systems has made it possible that today there are more than 20 technologies associated with this production system. As a consequence of...

The supply chain has been significantly impacted recently, and as a result the handling of products at the delivery and supply stage is of great importance. Currently, the agronomic industry is one of the most studied, but the reliability of harvests is not usually evaluated. This study uses a novel reliability analysis with an accelerated life tes...

In the Industry 4.0 era, healthcare services have experienced more dual interventions that integrate lean and six sigma with simulation modeling. This systematic review, which focuses on evidence-based practice and complies with the PRISMA guidelines, aims to evaluate the effects of these dual interventions on healthcare services and provide insigh...

Despite the increasing utilization of lean practices and digital technologies (DTs) related to Industry 4.0, the impact of such dual interventions on healthcare services remains unclear. This study aims to assess the effects of those interventions and provide a comprehensive under-standing of their dynamics in healthcare settings. The methodology c...

This paper analyzes the joint adoption of Industry 4.0 (I4.0) technologies and Total Productive Maintenance (TPM) practices in manufacturing firms. For that, we surveyed 335 practitioners from firms currently implementing TPM and I4.0, located in sixteen countries. The collected dataset was analyzed using sets of partial correlation analyses, obtai...

Health organizations have adopted technologies since the 1960s, but only after the Industry 4.0 were such technologies systematized and organized under the H4.0 acronym. The pace at which digital information and communication applications have been developed in recent years challenge healthcare managers to choose assertively those with the largest...

Purpose In this paper, the authors examine the impact of Industry 4.0 (I4.0) technologies on the relationship between total productive maintenance (TPM) practices and maintenance performance. Design/methodology/approach Data collection was carried out through a multinational survey with 318 respondents from different manufacturing companies locate...

Globally, companies are increasingly considering the importance of mental health in workers and their relationship with productivity, which has led to increased research on work stress, which showed that there is a relationship between stress related to work and health disorders, both physical and mental. This chapter addresses the analysis of two...

The objective of the study is to design and validate an instrument that allows organizations to assess their status regarding the adoption of the Critical Success Factors (CSFs) that enable Lean Six Sigma (LSS) implementation in order to achieve the expected benefits. An extensive literature review was conducted to define the LSS CSFs to be conside...

Background: Alternative approaches to analyzing and evaluating health care investments in state-of-the-art technologies are being increasingly discussed in the literature, especially with the advent of Healthcare 4.0 (H4.0) technologies or eHealth. Such investments generally involve computer hardware and software that deal with the storage, retriev...

Nuestro estudio resume la implementación de lean healthcare (LH) siguiendo el enfoque DMAIC para mejorar un proceso de suministro de un quirófano. A pesar de que se han realizado estudios similares en países desarrollados, hay una escasez de tales estudios en los países en desarrollo. Por tanto, nuestro estudio arroja luz sobre diferentes medidas r...

Organizations need to find the best practices in their operations to develop products or services that meet customer specifications; therefore, implementing a quality management system such as the ISO 9001 standardISO 9001 standard could provide these organizations with a framework to develop the continuous improvement of their work systems to meet...

Several studies have been conducted on alternatives to fossil fuels in internal combustion engines. In this work, we present an analysis of the optimization of a spark ignition engine (SIE), which operates with a mix of gasoline and hydrogen. Thus, this study tries to enrich the literature about the effect of using hydrogen in SIEs taking into acco...

UNSTRUCTURED This paper examines the trends, challenges, and theoretical gaps in Healthcare 4.0 (H4.0) technologies in hospital investment decisions. For that, we searched journal articles in four widely known databases and screened the retrieved documents to obtain a publications’ portfolio. Our findings show the multidisciplinary source of resear...

With an increasing demand for quality of care and lower costs, hospitals are looking for industry-based methods to improve efficiency in their processes. This study aims to reduce waste in a public hospital in Mexico by improving the medical supply process for the operating room. To this end, a lean healthcare (LH) implementation following the DMAI...

The purpose of the this research work was to evaluate the impact of social support (through its two dimensions: co-worker support and supervisor support) on the reduction of the burnout syndrome (considering its three dimensions: emotional exhaustion, professional efficacy, and cynicism) from two proposed models that show clear differences. Social...

This study aims at examining the effect of Healthcare 4.0 (H4.0) implementation on healthcare costs’ reduction in hospitals located in developing economies. For that, 159 middle and senior leaders from hospitals located in Brazil, India, Mexico and Argentina were surveyed regarding their adoption level of H4.0 technologies and cost reduction improv...

Organizations are in the constant pursuit of reliable strategies for increasing customer satisfaction. One of these strategies refers to the implementation of the ISO 9001 standard as a quality management system to ensure that products and services meet or surpass customer expectations. However, successful ISO 9001-based systems are possible only i...

This research was carried out in the Mexican manufacturing industry, the second most important activity in the country's industrial sector, specifically in the transportation equipment manufacturing sub-sector, which generates 19% of the jobs in this industry. Thus, it is important to develop improvement strategies to strengthen the sector's compet...

In this study we identify bundles of technologies and associated implementation barriers that could be viewed as part of Healthcare 4.0 (H4.0) and test their impact on performance improvement in a sample of hospitals. For that, we carried out a cross-sectional study with 181 leaders from hospitals in different countries that have already started H4...

Foodborne diseases are a significant cause of morbidity and mortality worldwide. Studies have shown that the knowledge, attitude, and practices of food handlers are important factors in preventing foodborne illness. The purpose of this research is to assess the effects of training interventions on knowledge, attitude, and practice on food safety an...

Healthcare services are facing challenges in increasing their efficiency, quality of care, and coping with surges in demand. To this end, some hospitals have implemented lean healthcare. The aim of this systematic review is to evaluate the effects of lean healthcare (LH) interventions on inpatient care and determine whether patient flow and efficie...

The purpose of this research is to provide a current situation of the ISO 9001 standard in the manufacturing sector in Mexico identifying its critical success factors, barriers and benefits of its implementation. A survey with 55 items in a five-point Likert scale was used mainly focused on quality managers and provided by e-mail and the social net...

Studies on the influence of contingency factors on the introduction of novel digital technologies into high-complexity systems, such as hospitals, are still incipient. As the introduction of Healthcare 4.0 (H4.0) usually implies in high capital expenditures and requires a more skilled labor force, such understanding gains relevance when considering...

Work-related stress is one of the ten most frequent occupational health problems worldwide and precedes a variety of serious mental disorders. It occurs when employees’ capabilities fail to meet job demands or when their knowledge and skills are insufficient to comply with company expectations. The aim of this research was to evaluate the impact of...

Purpose – This article identifies the association between two methods for teaching Lean Manufacturing (LM), problem-based learning (PBL) and classroom lectures, and students’ learning styles of a postgraduate course. Design/methodology/approach – Data was collected data from graduate students who are undergoing LM courses that present different tea...

Objectives: To assess the effects of lean healthcare (LH) on patient flow in ambulatory care and determine whether waiting time and length of stay (LOS) decrease after LH interventions. Methods: A systematic review was performed with close adherence to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). We searched for stud...

Purpose – The objective of this research is two-fold. First, we aim at identifying the pairwise relationships between Lean Production (LP) practices and Industry 4.0 (I4.0) technologies. Second, based on these results, we propose a framework for Lean Automation (LA) implementation, in which I4.0 technologies are integrated into LP practices. Design...

Improvement projects (IPs) are a fundamental element in any quality management system from any organization. In Higher Education Institutions (HEIs), IPs are constantly implemented to maintain excellence in academic and administrative processes. In this study, we propose a model for IP implementation that is based on the Baldrige Performance Excell...

Critical success factors are key elements that enable the success of projects. This research work proposes the design and validation of an instrument to evaluate the implementation of six sigma critical success factors during improvement projects in higher education institutions. Eleven critical success factors were selected from the literature on...

Hospitals face challenges to improve efficiency in order to meet an increasing demand for high quality of care and low costs. Industry-based methods such as lean healthcare (LH) are implemented to improve healthcare systems. This study presents a LH implementation following the DMAIC approach (Define-Measure-Analysis-Improve-Control) in a Mexican p...

Due to globalization and the accelerated growth of technology, ever more employees of companies are affected by burnout syndrome, the psychological nature of which requires a prolonged response to chronic interpersonal stressors in work environments. The present research aims to validate the operability of the Maslach Burnout Inventory-General Surv...

The principal limitations of the Design Thinking (DT) model reside in its high subjectivity, which generates some rigidity called psychological inertia and it is observed in the search for a solution within a very well-defined space. Also, DT does not offer strategies or techniques for the detailed solution of the intrinsic problems of the design p...

Globally, companies are increasingly considering the importance of mental health in workers and their relationship with productivity, which has led to increased research on work stress, which showed that there is a relationship between stress related to work and health disorders, both physical and mental. This chapter addresses the analysis of two...

Purpose The purpose of this paper is to empirically investigate the relationships among the implementation of LSC practices. Particularly, the authors examine the adoption level of 27 LSC practices, which were identified in a literature review, within 113 manufacturing companies from different sectors located in Southern Brazil. Design/methodology...

Efficiency is a main goal in healthcare because it has an impact on safety, quality and waste reduction. To increase efficiency, hospitals and laboratories around the world have implemented Lean Healthcare (LH) in their processes. Reports of case studies, critical factors and benefits have been increased in literature. However, the recent scientifi...

In this chapter, we present relevant information about lean manufacturing (LM), its beginnings, evolution, as well as the main LM techniques and tools. The main purpose of this chapter is to know the current state of LM methodology and describe the leading tools that have contributed to successful LM projects worldwide. For this purpose, we conduct...

This chapter exposes a comparative research of different anthropometric equipment that has a patent register, comparing analogic devices versus digital devices, with the aim to define the relevance and status of the anthropometric devices. The methodology used in this project is integrated in three stages. The first stage is a documental analysis r...

This paper presents a hybrid of genetic programming (GP) and reference-point-based non-dominated sorting genetic algorithm (R-NSGA-II) for the multi-objective optimization of an aluminum torch brazing process for the fabrication of condensers for the automotive industry. The objectives to be optimized are a vacuum leakage test (quality of product),...

Purpose The purpose of this paper is to empirically investigate the effect of a set of contextual variables on the implementation of lean supply chain (LSC) practices. The authors do that by investigating one main research question: “how do the contextual variables (i.e. plant size, supply chain level, level of onshore suppliers and age of the LM i...

Nowadays maquiladoras require improving processes and reducing costs in order to stay in the market and be competitive. Just in Time (JIT), the lean manufacturing tool, works specifically on materials handling, but critical success factors (CSFs) for its implementation are unknown. For this reason, in this chapter the results of a survey applied to...

Companies currently are immersed in a highly competitive world; therefore, they must adopt continuous process and product improvement techniques to remain in business and retain loyal customers. This paper presents the analysis of a medical device manufacturing company to determine what factors influence the length variation of plastic tubes in a c...

Effective decision making in the automotive supply chain is complex, due to the increasing number of suppliers and customers who form part of it. For this reason, the use of tools that allow to improve the performance of the supply chain is necessary. Simulation Software is one of these tools. Therefore, in this paper a simulation model to improve...

Purpose – The purpose of this paper is to extend the understanding of Six Sigma (SS) and the underlying dimensions of its critical success factors (CSF) via an analysis of the effects of top management support (TMS), implementation strategy (IS), and collaborative team (CT) on project performance (PP) in Mexican manufacturing companies. Design/met...

This chapter studies Critical Success Tools and Techniques (T&Ts) of Six Sigma (SS) strategy reported by researchers and practitioners. The main objectives of this research are to describe the current situation of SS and collaborate in the understanding of its successful implementation. This study was carried out through an extended literature revi...

En un ambiente global competitivo las maquiladoras necesitan constantemente mejorar sus procesos y reducir sus costos para permanecer en el mercado. La herramienta Justo a Tiempo (JIT) trabaja fundamentalmente en estos dos aspectos. Sin embargo, se desconocen los Factores Críticos de Éxito para su implementación, así como sus relaciones. En este ar...

Sentiment analysis aims to extract users’ opinions from review documents. Nowadays, there are two main approaches for sentiment analysis: the semantic orientation and the machine learning. Sentiment analysis approaches based on Machine Learning (ML) methods work over a set of features extracted from the users’ opinions. However, the high dimensiona...

The effective decision making in the supply chain automotive can be complex because the number of suppliers and customers who form part of it. For this reason, is necessary the use of tools to help the stakeholder in the selection of better decisions that allows for improving the performance of the supply chain, one of these tools is the simulation...

This study presents the construction of a human reliability model for assembly line manual workers, using Cox’s Proportional Risk model. Nine factors were identified in 120 assembly line operators using psychometric tests. Subsequently, the factors of stress, motivation, memory, and personality were identified, using a multiple linear regression an...

Main objectives of this work are to describe the current situation and increase the understanding of successful Six Sigma (SS) implementations through a study of Critical Success Factors (CSFs) reported by researchers and practitioners. The work integrates lessons learned from successful projects and considers additional progress to the approach, t...

The industry in search of the optimization of the processes has resorted to the application of lean manufacturing to solve a variety of problems that are present in the manufacture of different products. The Design of systems and products requires an understanding of the causes that achieve desirable performance, the need for an efficient system is...

This chapter presents information for both practitioners and academicians about Six Sigma (SS) methodology. Main goal is to provide an overview of Six Sigma, from its beginning until nowadays, giving a description of its phases. A literature research was conducted to determine the Critical Success Factors (CSF) and Tools and Techniques (T&T) more f...

Resumen El presente trabajo trata sobre la aplicación de la metodología de seis sigma (DMAMC), así como los métodos Taguchi para resolver el problema de baja resistencia a la prueba de jalón de un diodo emisor de luz (LED Abstract This paper deals with the application of six sigma methodology (DMAIC) and Taguchi methods to solve the problem of low...

Human error is described by determining twenty eight factors that influence human behavior and which together make up the operating conditions under which people work. Human error is the source of numerous accidents and, therefore, is a key element that must be reduced or eliminated. This can be achieved if human erroris known and explained through...

The application of a bayesian methodology for simultaneous optimization of multiple responses is presented. A previous proposal is modified by introducing a modification that makes it more flexible, allowing working with the case in which not all the variables considered in the study are equally important. To incorporate in the methodology these di...

The purpose of this paper is to provide an actual view and to expand understanding regarding tools and techniques (T&T) which help to a successful six sigma implementation. More than 100 T&T were identified, organized in two periods, and a meta-analysis approach were employed to study tools and techniques reported in 143 studies from different coun...

This study shows a methodology employed for the simultaneous optimization of multiple responses. The methodology is Bayesian and is based in a work presented previously which proposes optimize the probability that the response variables meet their respective specifications simultaneously, only with a modification that makes it more flexible, which...

The operations analysis and methods used during manufacturing processes have been one of the primary research topics of the last 100 years. The integration of statistical techniques used in research and the improvement of manufacturing processes had made it possible for information analysis to be done with greater efficiency, determining in most ca...

The robustness of the Mahalanobis-Taguchi System to different arrays that could be used to discriminate variables in a study, is evaluated. For this, different levels of fractional factorial design 29 were used, as well as all possible fractions for each level to find out if the results varied depending on the array utilized. For this analysis the...

Resumen Se evalúa la robustez del Sistema Mahalanobis-Taguchi a los diferentes arreglos que pudieran utilizarse para discriminar las variables consideradas en un estudio. Para esto se utilizaron diferentes niveles de fraccionado de un diseño factorial 2 9 , así como todas las fracciones posibles para cada nivel, para evaluar si el resultado variaba...