• Asian-Australasian Journal of Animal Sciences
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• 제33권5호
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• pp.812-824
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• 2020

Objective: The aim of this work was to assess the effect of fermented blueberry (FB; 2%, 4%, and 6%) on the oxidative stability and volatile molecule profiles of emulsion-type sausage stored at 4℃ for 28 days. Methods: The antioxidant activity of FB was determined through radical-scavenging activity against 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and hydroxyl radicals. Four formulations of sausage treatments with different FB levels (0%, 2%, 4%, 6%) were prepared, then peroxide value (POVs), thiobarbituric acid-reactive substances (TBARS) values, protein carbonyls and thiol groups were measured. The aroma profiles of sausages for each treatment was also determined. Results: The half maximal inhibitory concentration indicated that FB had greater scavenging ability than ascorbic acid against DPPH and hydroxyl radicals. Sausages with FB significantly retarded increases in POVs and TBARS, as well as in the content of protein carbonyls during all storage days (p<0.05). Particularly, 4% and 6% FB-treated sausages had better oxidation inhibition effects. However, FB accelerated the reduction in thiol groups (p<0.05). Additionally, FB inhibits the excessive formation of aldehyde compounds; for example, hexanal, which may cause rancid flavors, decreased from 58.25% to 19.41%. FB also created 6 alcohols (i.e., 2-methyl-1-propanol, 3-methyl-1-butanol, and phenylethyl alcohol), 5 ester compounds (i.e., ethyl acetate, ethyl lactate, and ethyl hexanoate) and 3-hydroxy-2-butanone in the sausages that contribute to sausage flavors. The principal component analysis showed that the aroma profiles of sausages with and without FB are easily identified. Conclusion: The addition of FB could significantly reduce the lipid and protein oxidation and improve oxidative stability for storage. Also, adding FB could inhibit rancid flavors and contribute to sausage flavors.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제14권1호
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• pp.79-98
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• 2010

To analyze the relationships between self-control, thinking quality and mathematical academic achievement, 197 senior school students were asked to complete questionnaires called "self-control ability on mathematics for middle school students" and "thinking quality for senior school students." The results were as follows: (1) There was strongly positive relevance between self-control ability, thinking quality and mathematical academic achievement. (2) A model was presented in which self-control ability had a direct impact on mathematical academic achievement, meanwhile had indirectly influenced mathematical academic achievement by thinking quality which acted as the intermediate variable. Thinking quality had a direct impact on mathematical academic achievement, too. (3) There's no significant difference between the two groups of boys and girls on the structural weights.

• 품질경영학회지
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• 제45권3호
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• pp.349-364
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• 2017

Purpose: The purpose of this study is to analyze quality control strengthening pilot project in development stages of weapon systems which ensures zero-defect. In order to achieve that, we propose collaboration support system between related organizations. Methods: First, we analyze how quality control methods has been developed from reviewing the preliminary study in commercial and defense industry. Then, we suggest improvement plans for quality control in defense industry and propose a pilot study which able to improve the recognized problems. Results: The results of this study ensures the participants in defense industry recognize the importance of quality control and form a consensus by sharing a case study. Finally, we propose the standardized work process by utilizing manual and manpower dispatching. Conclusion: As a result, this study clarifies the scope and role of relevant organizations to achieve the defense quality assurance in the total life cycle(TLC). Also, this paper guides the collaboration system between the relevant organization which differs from the commercial industry currently divided into development-production-quality.

• The Journal of Asian Finance, Economics and Business
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• 제8권10호
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• pp.353-359
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• 2021

The article analyzes the impact of internal control on the quality of accounting information in Vietnamese paper manufacturing enterprises, providing empirical evidence on factors affecting the quality of accounting information. To analyze the impact of internal control on the quality of accounting information, the researchers used questionnaires to conduct a survey of paper manufacturing companies. Research data is collected through emails and face-to-face interviews with managers, employees working in different positions, managers at all levels, chief accountants, and accountants, of 56 paper manufacturing enterprises in Vietnam. 321 questionnaires were distributed of which only 296 were valid and could be used in this study. Quantitative research was carried out with SPSS 25 software. Research results show that 3 factors have a positive influence on the quality of accounting information including control environment, accounting information system, and internal control procedures in Vietnamese paper manufacturing enterprises. Based on the findings, the author has made recommendations on the control environment, accounting information system, and internal control procedures in order to improve the effectiveness of internal control and the quality of accounting information of paper production enterprises, thereby contributing to improved competitiveness and operational efficiency.

• 산업경영시스템학회지
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• 제41권4호
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• pp.203-212
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• 2018

Quality requirements of manufactured products or parts are given in the form of specification limits on the quality characteristics of individual units. If a product is to meet the customer's fitness for use criteria, it should be produced by a process which is stable or repeatable. In other words, it must be capable of operating with little variability around the target value or nominal value of the product's quality characteristic. In order to maintain and improve product quality, we need to apply statistical process control techniques such as histogram, check sheet, Pareto chart, cause and effect diagram, or control charts. Among those techniques, the most important one is control charting. The cumulative sum (CUSUM) control charts have been used in statistical process control (SPC) in industries for monitoring process shifts and supporting online measurement. The objective of this research is to apply Taguchi's quality loss function concept to cost based CUSUM control chart design. In this study, a modified quality loss function was developed to reflect quality loss situation where general quadratic loss curve is not appropriate. This research also provided a methodology for the design of CUSUM charts using Taguchi quality loss function concept based on the minimum cost per hour criterion. The new model differs from previous models in that the model assumes that quality loss is incurred even in the incontrol period. This model was compared with other cost based CUSUM models by Wu and Goel, According to numerical sensitivity analysis, the proposed model results in longer average run length in in-control period compared to the other two models.

• 품질경영학회지
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• 제30권4호
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• pp.58-67
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• 2002

Since the inception of off-line quality control, it has drawn a particular attention from research community and it has been implemented in a wide variety of industries mainly due to its extensive applicability to numerous real situations. Emphasizing design issues rather than control issues related to manufacturing processes, off-line quality control has been recognized as a cost-effective approach to quality improvement. It mainly consists of three design stages: system design, parameter design, and tolerance design which are implemented in a sequential manner. Utilizing experimental designs and optimization techniques, off-line quality control is aimed at achieving product performance insensitive to external noises by reducing process variability. In spite of its conceptual soundness and practical significance, however, off-line quality control has also been criticized to a great extent due to its heuristic nature of investigation. In addition, it has also been pointed out that the process optimization procedures are inefficient. To enhance the current practice of off-line quality control, this study proposes an integrated optimization model by utilizing a well-established statistical tool, so called response surface methodology (RSM), and a tolerance - cost relationship.

• 품질경영학회지
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• 제22권2호
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• pp.1-19
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• 1994

There have been few studies which deal with the linkage between a corporate strategy and its management control system. Especially, no empirical study has been done in Korea to figure out if management control systems of Korean companies are designed and implemented to support companies' objectives and strategies. Based on the survey results of 68 companies we empirically tested if Korean companies are implementing appropriate control systems to complement their Quality strategies. Two representative quality strategies were classified into ECL(Economic Conformance-Level) and ZD(Zero-Defect) strategy. It was measured by a set of seven attitude questions addressing whether the managers adhered to ECL strategy or ZD Quality strategy. In addition, we checked if there is a difference m the level of commitment to the quality depending on the adoption of quality cost system. The results partly support the second hypothesis and regarding the first analysis we can conclude that there is not a strong linkage between Korean companies' ZD strategy and their management control systems.

• 한국한의학연구원논문집
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• 제6권1호
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• pp.59-68
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• 2000

The purpose of this study is to encourage the circulation of good quality of oriental medicine and to improve national welfare. Investigation for the induction of quality inscription system was conducted by mail and interview. The data were analyzed by SAS. The major results were as follows: The portion of subjects agree to necessity of quality inscription was 78.5%. In the question of side effect against quality inscription, the rate of negative was 67.7%. The responses answered that the necessity of quality inscription was not economical profit but authority of knowledge and improvement on health(37.8%), established market for herbal medicine(34.7%) and effect of clinical care(23.9%), respectively These results might be useful information for establishing of quality inscription system for herbal medicine.

• International Journal of Quality Innovation
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• 제5권1호
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• pp.10-22
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• 2004

The paper outlines a comprehensive three-step approach to the development of advanced strategies for quality control of a complex machining process. The research framework is a developed concept for Integrated Supervisory Process Control. The promising results obtained demonstrate a non-traditional approach to the deployment of quality and productivity requirements set by the system users, whereby the efficiency and systematization of the development of quality control strategies can be significantly improved.

• 품질경영학회지
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• 제44권3호
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• pp.587-600
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• 2016

Purpose: This paper evaluates the performance of the pre-control(PC), an alternative to statistical process control techniques and compares with a control chart considering the tolerance of process. Methods: The previous studies for PC have drawbacks that PC with two linked stages, qualification and running, are discussed separately and independently. Hence this paper analyzes the performance of PC by integrating two stages. Results: Average outgoing quality limits to grasp the outcome of PC are provided by computational results for two process capability indexes, $C_p$ and $C_{pk}$ and the usefulness of PC from comparative experiments with modified control charts is commented. Conclusion: Helpful guidelines for quality managers to apply PC in practice and areas of process for PC to be more benefit are presented.