• Journal of the Korea Safety Management & Science
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• v.15 no.1
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• pp.293-301
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• 2013

The purpose of this study is to introduce the limit of previously used six sigma quality process evaluation metrics, $Z_{st}$ and $P_{pk}$, and a solution to overcome this drawback by using a metric based on performance evaluation of Z-factor quality innovation. Case analysis on projects from national six sigma contest from 2011 to 2012 is performed and literature review on new drug development HTS (High Throughput Screening) is used to propose innovative performance evaluation metrics. This research shows that experimental study on six sigma evaluation metric, $Z_{st}$ and $P_{pk}$, have no significance difference between industrial type (Manufacturing, Semi-Public Institute, Public Institute) and CTQ type (Product Technology Type CTQ, Process Technology Type CTQ). Following discovery characterize this quality improvement as fixed target type project. As newly developed moving target type of quality innovation performance metric Z-Factor is used for evaluating experimental study, hypothetical analysis suggests that $Z_{st}$ and $P_{pk}$ share different relationship or even show reciprocal relationship. Constraints of the study are relatively small sample size of only 37 projects from past 2 years and conflict on having interview and communication with six sigma quality practitioner for qualitative experimental study. Both moving target type six sigma innovation project and fixed target type improvement project or quality circle enables efficient ways for a better understanding and quality practitioner use by applying quality innovation performance metric. Downside of fixed target type quality performance evaluation metric, $Z_{st}$ and $P_{pk}$, is presented through experimental study. In contrast, advantage of this study is that high throughput requiring product technology, process technology and quantum leap typed innovation effect is evaluated based on precision and accuracy and Z-Factor that enables relative comparison between enterprises is proposed and implemented.

• Journal of Information Technology Applications and Management
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• v.24 no.3
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• pp.73-92
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• 2017

Usability is one of the most important concepts regarding software quality. It can be interpreted as the goodness associated with using the software product. This paper distinguishes the goodness of an individual using experience and the goodness of a product for using. This paper proposes a software quality view model which classifies software quality views into two broad categories of end view and means view. End view includes long-term view and short-term view which is classified further into performer's view on software activity and third party's view on software activity. Means view includes intrinsic view and contingency view. The analysis of ISO 25000 Series SQuaRE demonstrates the necessity to decompose product quality model and quality in use model into five models corresponding to the software quality views respectively. The analysis on playability shows that the universal definition of usability may be an illusion. The results provide the theoretical basis to build a comprehensive and consistent body of knowledge regarding software quality, which is consisted with the set of quality models and the theories explaining the relationships among the elements of the models.

• The Research Journal of the Costume Culture
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• v.9 no.3
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• pp.343-356
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• 2001

The purpose of this was to classify consumer groups according to the life styles and analyze buying intention and evaluation criteria of apparel product, opinion to 4p\`s aspect among consumer groups. And it was to clarify relationships between the experience of CATV home shopping and buying intention and evaluation criteria of apparel product, opinion to 4p\`s aspect. The subjects of this study were 270 women living in Chonbuk and Chonnam regardless their experience in CATV home shopping. For data analysis, frequency, percentage, mean, t-test, factor analysis were conducted. The results were as follows; First, the type of life style were classified into the following subdivisions: products confirmed type, price-quality regarded type, time regarded type, new product regarded type. Second, the significant differences among the classified life style groups were found in buying intention, evaluation criteria of apparel product, and opinion to 4p\`s aspect. Third, there were significant differences in buying intention, evaluation criteria of apparel product, and opinion to 4p\`s aspect according to TV home shopping experience.

• Journal of Information Technology Applications and Management
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• v.23 no.3
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• pp.71-86
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• 2016

This paper proposes a new software quality model composed of a hierarchy of software quality views and three software quality characteristics models. The software view hierarchy is composed of two levels : end view and means view at the first level, contingency view and intrinsic view as sub-views of means view. Three software quality characteristics models are activity quality characteristics model, contingency quality characteristics model, and intrinsic quality characteristics model, which correspond to end view, contingency view, and intrinsic view respectively. This paper also reclassifies characteristics of ISO/IEC 25000 series SQuaRE's software product quality model according to the proposed software quality model. The results illustrate clearly the shortcomings of SQuaRE's product quality model and how to overcome them. First of all, most of SQuaRE's product characteristics should be redefined and conceptually clarified according to the views on which they are really rested. Much more characteristics should be supplemented too. After that, rigorous empirical researches will become relevant. Causal relationships between activity quality characteristics and characteristics of means view should be empirically researched.

• Natural Product Sciences
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• v.10 no.4
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• pp.141-151
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• 2004

Platycodi Radix, as one of the most important traditional oriental materia medica, is utilized frequently in clinical practice and dietary in China, Korea, and Japan. To evaluate definitely the quality of Platycodi Radix, and provide scientific data for commodity circulation, new product development and clinical application of Platycodi Radix, we summarized its medical history, application status, chemical compositions, bioactivities, cultivation, international circulation, quality evaluation, dosage and safety, and brought forward some constructive suggestions on further establishment of international criteria for quality control of Platycodon grandiflorum.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2005.05a
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• pp.473-476
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• 2005

Today's manufacturing industry is facing challenges from advanced difficult-to-machine materials (WC-Co alloys, ceramics, and composites), stringent design requirements (high precision, complex shapes, and high surface quality), and machining costs. Advanced materials play an increasingly important role in modem manufacturing industries, especially, in aircraft, automobile, tool, die and mold making industries. The greatly-improved thermal, chemical, and mechanical properties of the material (such as improved strength, heat resistance, wear resistance, and corrosion resistance), while having yielded enormous economic benefits to manufacturing industries through improved product performance and product design, are making traditional machining processes unable to machine them or unable to machine them economically. In this paper, mechanical characteristic evaluation test of fine powder type WC-Co alloy was accomplished to obtain clear data for miniaturized special die parts machining with high reliability and high quality.

• The KIPS Transactions:PartD
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• v.13D no.5 s.108
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• pp.699-708
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• 2006

The latest biometric field have marched fast with security technology of IT. As importance of present biometrics is realized, internal and external biometrics software market is trend that is soaring. Accordingly, high reliability of biometric software and request of high quality software are enlarged. Evaluation items and criteria must be established for biometric software quality assurance. In this paper, we development the evaluation module for biometric software test based on ISO/IEC 12119 that is the standard about software quality requirement and test, and ISO/IEC 9126 that is standard about evaluation of software product, and ISO/IEC 14598-6 that is the standard about construction of the evaluation module. Constituents of biometric software products(product descriptor, user document program and data) is subject to the quality evaluation module that we developed in this paper, we can expect improvement in the quality of software by using with a standard such as ISO/IEC 9126-3 that can be used in software development process.

• Journal of Korean Society for Quality Management
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• v.19 no.2
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• pp.108-116
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• 1991

Value Engineering has been recognized by many companies as a powerful and innovative techniques approach for cost down and improvement in function of product and service. Functional evaluation is the most important progress in VE activities. But it is often difficult to evaluate the function of a certain subject because the evaluation of function is very vague. This paper presents a new functional evaluation method using fuzzy theory. The purpose of this proposed method is the improvement in the precision of functional evaluation.

• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.7
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• pp.1064-1074
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• 2007

The purpose of this study was to determine the purchasing behavior of knitted apparel consumers. Differences in knit product evaluation criteria according to consumer characteristics, such as gender, age, and interest in knit products also were reported. Male and female consumers participated in the study. Quota sampling was used and data from 463 questionnaires were analyzed. Descriptive statistics, $X^2$ analysis, factor analysis, Cronbach's alpha coefficient, t-test, one-way ANOVA, and post-hoc test were conducted. Results indicated that 65.4 percent of respondents did not discern between knits and woven products. Cardigan was the most preferred knitted product category. Most of the respondents purchased knitted apparel themselves, got product information at stores, spent less than 100,000 won for a single knitted product and went to department stores to buy knitted apparel products. Some 62.5 percent of respondents reported wearing the product less than four year. Consumers who are more interest in knitted apparel also considered such criteria as external attributes, quality, and aesthetics to be important. Respondents who discerned between knits and woven considered quality most important. Female respondents considered quality and aesthetic criteria more important; respondents in their twenties considered aesthetic criteria most important; and respondents in their thirties through fifties considered external criteria most important. Results of this study provide a basis for understanding knitted apparel consumers' purchasing behavior.

• Journal of the Korean Society of Clothing and Textiles
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• v.26 no.11
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• pp.1605-1614
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• 2002

The purpose of this study was to identify the consumers who use the level of price as the indicator of the product quality. In order to implement the purpose of this study, Jeans market had been segmented by the mixture regression model, and price response function was calibrated for each segment. Based on the types of price response function, segments were allocated into one of two groups; the group using the level of price as the quality indicator or the group not using the level of price as that. Then, characteristics of both groups were compared in terms of product attributes and demographic variables. Data were co]looted from the sample of the 23o undergraduate and graduate students in Seoul. For the data analysis, mixture regression model, conjoint analysis, and t-test were used. As a result, jeans market was divided into 5 segments. Segment 1,2,3 were allocated into the group not using the level of price as the quality indicator while segment 4,5 were done into the other group. Significant differences existed between two groups in product attributes, not in demographic variables. Mixture model and conjoint analysis were proved to be an effective set of tools in market segmentation.