Tsang-Chuan Chang

• Doctor of Philosophy
• Associate Professor at National Taichung University of Science and Technology

While deep learning technology is widely used in the field of image classification and recognition, parameter setting for convolutional neural networks is complex, and a high number of parameters make the technology difficult to apply in practice. Therefore, this study proposes a Taguchi-based convolutional fuzzy neural classifier (T-CFNC) to class...

Manufacturers aim to produce products that meet customer expectations. To this end, they must monitor and assess the machining quality of product to ensure high-quality reliable products. With the rise of consumer awareness, the products that customers can choose from are not only becoming more and more diverse, but also have multiple independent q...

Artificial intelligence (AI) assists in decision-making across various fields and industries. Diverse market needs have prompted the rapid evolution of AI learning algorithms. Deep learning networks (DLNs) process classification problems associated with perceptrons; this approach has become mainstream in the current AI era. To compare the classific...

In highly-competitive markets, product quality is a critical element of sustainable development for manufacturing enterprises. The pursuit of quality is in essence a commitment to meeting the needs and expectations of customers. Firms often express customer needs in terms of quality characteristics in order to evaluate, monitor, and improve process...

Amidst fierce competition and diversifying customer needs in today’s markets, product development and design have shifted toward a more user-oriented model. This makes it common for products to have multiple quality characteristics. However, simply meeting customer needs is no longer sufficient; quality is also a key factor of a consumer’s willingn...

With intense competition in industry today, product quality has become a crucial factor influencing whether a firm can achieve sustainable operations and maintain competitiveness. Process capability indices are effective tools often used in manufacturing to determine whether products meets requirements, and most assume that the quality characterist...

Maintaining high levels of process quality is crucial to the competitiveness of manufacturing firms in today's increasingly global marketplace. To ensure the quality of manufactured products meets customer needs, process capability indices (PCIs) are widely used to analyze the process performance of various processing characteristics. Products char...

Because of rapid changes in consumer needs, diverse and small-batch production has become a crucial strategy for companies progressing toward sustainability in intensely competitive industries. To swiftly meet the diverse needs of consumers using this production strategy, often manufacturers must outsource noncore processes to external contractors...

Process quality and yield are always crucial determinants of a firm's competitiveness; therefore, monitoring and assessment for process quality are vital aspects of their sustainable development. The Six Sigma quality control is based on defect rate and nonconforming units to eliminate factors that cause process defects. Thus, it has become a power...

Ongoing pursuit of greater process quality has always granted manufacturers advantage in an increasingly competitive market place. This has prompted numerous researchers to develop quality assessment models for various machining processes. The Six Sigma quality management method, which determines process quality based on yield, is a useful standard...

Supply chain management models integrate upstream and downstream organizations to enable rapid response to consumer needs. For the manufacturing industry, the process quality of suppliers is thus the foundation of sustainable growth for firms and an important indicator of whether a firm can effectively reduce waste and protect the environment. To t...

In the face of increased competition and globalization, supply chain management has become a crucial aspect of securing competitive advantage. Within this, the quality offered by suppliers is vital. Thus, in this paper, we develop a model to select the best supplier based on process quality from the perspective of the buyer. We first employ the pro...

Supplier selection is a practical problem in supply chain management and quality is the most important criterion in supplier selection. In this study, we developed a supplier selection model based on process quality, in which the Six Sigma quality index [Formula: see text] is used as a tool to assess the process quality provided by suppliers. Note...

Taiwan is a world-leader in wafer foundry services and IC packaging and testing. Wire bonding is a crucial process in the overall IC-packaging industry chain. Thus, this paper proposes a process-quality evaluation model for wire bonding with multiple gold wires. We chose process quality indices as a tool of evaluation fully mirroring process yield...

Machine tools are fundamental equipment in industrial production, and their processing quality exerts a direct impact on the quality of the component product that they process. Thus, machine tool manufacturers develop various machine tools depending on market needs and processing functions, and the processed component products generally possess mul...

Process quality is a crucial determinant of client satisfaction and affects a product’s value; therefore, maintaining quality control is a vital aspect of corporate sustainability and development. Many researchers have developed evaluation models for process quality. The majority of such research assumes that collected measurement data are precise,...

Outsourcing has become a competitive business model for the global manufacturing market, enabling firms to increase their overall production efficiency and enhance their own competitiveness in manufacturing. In view of this, we took into account the two important factors of process quality and manufacturing time to develop an optimal contractor sel...

By taking process targeting as well as process variability into consideration, the Taguchi capability index Cpm gives a reasonable indication of process loss. This makes it an ideal tool for practical applications that depend on the evaluation of process quality. The ability of Six Sigma quality management to reduce process defect rates has led a n...

Gears are among the most crucial components in the transmission systems of machine tools. Gear manufacturing includes a number of processing procedures. The grinding process is an important procedure involving high precision and fairly small grinding surfaces. For this reason, this study aimed at developing a quality assessment model for the intern...

In the face of fierce global competition, firms are outsourcing important but nonessential tasks to external professional companies. Corporations are also turning from competitive business models to cooperative strategic partnerships in hopes of swiftly responding to consumer needs and enhancing overall efficiency and industry competitiveness. This...

A performance evaluation matrix (PEM) presents the overall performance of an organization and provide reference for improvement strategies. PEMs are widely applied in the assessment of service performance in various organizations. Customer ratings of importance and satisfaction are used to calculate point estimates which are then plotted in PEMs. T...

Wire bonding involves welding multiple gold wires to connect integrated circuits (ICs) to external circuits for power and signal transmission. Poor-quality wire bonding can prevent the IC and the electronic product from functioning effectively. In view of this, we developed a model to assess and control the quality of wire bonding with multiple gol...

Physical fitness is a measure of an individual’s ability to perform physical tasks and has a significant influence on health. Thus, improving a person’s fitness level has become a vital issue in preventive medicine in many developed countries today. However, a considerable amount of research employs secondary data or random samples for the assessme...

Improving fitness levels is a key area of preventive medicine and plays an essential role in health promotion. Most organizations, constrained by time, manpower, and cost, conduct fitness tests on a random sample of the population in order to gain an understanding of overall fitness levels. However, a great degree of uncertainty may be introduced i...

Process capability indices (PCIs) are widely used as a measure of process potential and process performance. Unfortunately, the use of sample data to estimate PCIs means that any error in the sampling can introduce considerable uncertainty into the assessment of process capability. This necessitates the use of the lower confidence limit (LCL) in th...

Process quality is the primary factor in facilitating product sales. In accordance with the concept of Six Sigma, numerous studies have employed process capability indices for the determination of process quality levels. Unfortunately, existing indices present only a range of quality levels rather than a specific quality level value. This paper aim...

The process capability index Cpm can reflect process loss as well as process yield, thus is the most frequently used index for evaluating product quality in manufacturing industries. When evaluating the process performance, confidence intervals are often used for assurance with regard to the critical value of the process capability index. Unfortuna...

The Taguchi capability index Cpm has been proposed to the manufacturing industry for measuring manufacturing capability. Investigations of the estimated Taguchi capability index based on subsamples have been proposed and arrested substantial research attention. In this paper, investigation based on subsamples is considered for normally distributed...

The growing popularity of do-it-yourself (DIY) projects has increased the penetration of hand tools devices into the market. This paper thus conducts a case study on ratchet torque wrenches and develops an assessment and verification model of process quality as a means of assisting hand tool manufacturers in managing the quality of ratchet torque w...

This paper proposes process quality indices (PQIs) for the assessment of quality levels associated with unilateral as well as bilateral specifications. To ensure the reliability of quality assessments, we employed the lower confidence limit of the indices to serve as a standard and developed a process quality analysis chart (PQAC) for the simultane...

Service industry has become the primary driving force behind global economic growth. This means that ensuring service quality is an important issue. Unfortunately, the process of providing services includes a number of variables that are difficult to control. As a result, determining the means to ensure the quality of service is a popular theme of...

Service quality is regarded as the key factor in obtaining competitive advantage. However, service and physical products differ fundamentally, and the voice of customers is generally fuzzy and non-quantitative, often leading to errors in the measurement of service quality. Based on the view of performance influence, this study applied fuzzy linguis...

Service quality is becoming increasingly important, largely determining whether customers patronize a company. However, each customer has a particular level of demand for a service, which requires that companies provide services with diverse characteristics to satisfy the needs of customers. This shows that customer satisfaction is the overall appr...

The process capability index Cpm, which can respond to both process loss and process yield, is one of the indices frequently used in industries. The process quality can also be determined based on the confidence lower bound. However, because the probability density function of Cpm is quite complex, the confidence intervals for Cpm is difficult to d...

Process capability indices have been widely used in the manufacturing industry to provide numerical measures for process potential and process performance. However, from the perspective of improving process quality, there is a significant amount of process information that cannot be conveyed with a single index. Therefore, a single index does not h...

The evolution of technology has increased the demand for convenient and user-friendly human-machine interfaces. This demand has driven the rapid development of the touch panel industry. Functioning as a conductive medium, indium tin oxide (ITO) film is a key factor in the quality of touch screens or panels. Because the sputtering process of ITO fil...

Amid the rise of the caring and nursing industry, more and more service institutions for the aged start operation and to provide the healthy and comfortable environment for the aged is literally the object that the operators pursue. Hence this article introduces the six-sigma DMAIC methodology to enhance the health benefit of the nursing and caring...

Obviously service industry has become the most important industry in the present industrial structure with highest production value. For enterprises, how to elevate the quality of all the services provided so as to increase customer satisfaction thus is crucial. First, investigation is conducted in this paper through the scale of SERVQUAL questionn...

Consumer electronic products have become an indispensable part of living for people with the development of information technologies. Crystal oscillator, CXO, a frequency controlling component, which is needed by communication-related industries, is widely used in expensive electronic products like mobile phones, notebook computers and GPS for its...

Taiwan has officially been an “Aging society” since 1993, and a growing number of elderly people there cannot receive proper care from family members. Therefore, Taiwan’s “long-distance home care services” have been classified as an emerging service industry. This industry rests mainly on information and telecommunications technology to overcome th...

Some of Taiwan genuine products are the first position of market share around the world, and there arealso many competitors show their capability in challenging the position of Taiwan manufacture. The strategy for products in the stage of maturity under steep competition is to increase their quality and yield rate which will prevent unnecessary was...