All issues
Volume 5 (1997)
- Issue 6 Pages 11-
- Issue 5 Pages 11-
- Issue 4 Pages 16-
- Issue 3 Pages 26-
- Issue 2 Pages 3-
- Issue 1 Pages 3-
Volume 5, Issue 2
Displaying 1-6 of 6 articles from this issue
- |<
- <
- 1
- >
- >|
-
7. Signal-to-Noise Ratio for Chemical and Biological SystemsGenichi Taguchi1997 Volume 5 Issue 2 Pages 3-9
Published: April 01, 1997
Released on J-STAGE: December 24, 2016
JOURNAL FREE ACCESSIn chemical and biological areas, quite often we have to deal with digital type data such as fraction data. How to define Signal-to-Noise Ratio for those areas are discussed in this article. We need to define two different types of S/N ratios. The first type of S/N ratio is to show the functionality of time-wise change and the second the functionality related with side effects in those process.
View full abstractDownload PDF (1571K)
-
Tatsuji Kanetaka1997 Volume 5 Issue 2 Pages 35-44
Published: December 01, 1997
Released on J-STAGE: March 24, 2016
JOURNAL FREE ACCESSThis paper reports a case study of using Mahalanobis Distance (D2) for multi-variable analysts. The case is a special health checking of liver function, an application of statistics in medical field using 16 blood biological test results, age and sex. It is important in multi-variable analysis to prepare a good data base. The distribution of a good data base is mostly homogeneous. The variation of the data from a healthy group is small, but not in the group of people with disease, Therefore, it is desirable to obtain the test results from the healthy people. However, it is not easy to do so because of the lack of test items which are necessary to use for judgment of a certain disease, For example, the test items from regular examination are not enough to make judgment in many disease,Fortunately, we took possession of a good biological data base from a group of healthy people, and analysis was made in this report.View full abstractDownload PDF (2137K) -
Takahiro Uozumi, Shinichi Haramura, Takahiro Tanaka1997 Volume 5 Issue 2 Pages 45-50
Published: April 01, 1997
Released on J-STAGE: March 24, 2016
JOURNAL FREE ACCESSIn manufacturing, inspection is conducted to know if a process is under normal operating condition. However, the method is usually determined by the nature of the process or from the experience in the past, and in most cases, it is not rational from the economic viewpoint. In quality engineering, the optimum control method is determined by balancing the cost of control and the loss due to quality. The loss due to quality is the loss caused by the products which did not pass the inspection. In this study, an On-Line Quality Engineering method was applied to a color film inner packaging process. The optimum sampling interval was increased by four times, saving 22.5 million yen due to sample loss and 15 million yen by inspecting labor cost reduction.View full abstractDownload PDF (1320K) -
Kazuko lkeda, Machiko Sato, Kazuhito Tabata, Takashi Kamoshita, Hirosh ...1997 Volume 5 Issue 2 Pages 51-58
Published: April 01, 1997
Released on J-STAGE: March 24, 2016
JOURNAL FREE ACCESSIn order to study the jacket wearing comfort, a wearing experiment was conducted and the multi-dimensional information from experiment was analyzed using Mahalanobis Distance. 143 university students of 19 and 20 years old were selected for the experiment and heir dimensions such as height, bust, hip, waist, etc., were measured using a measuring equipment specified by JIS (Japanese industrial Standards). It was clarified from this study that wearing comfort can be effectively evaluated by the use of Mahalanobis Distance. The study also gave a direction to the selection of meaningful measuring items.View full abstractDownload PDF (1706K) -
Michael Deng, Dingjun Li, Wesley Szpunar, John King, John Coleman1997 Volume 5 Issue 2 Pages 59-65
Published: April 01, 1997
Released on J-STAGE: March 24, 2016
JOURNAL FREE ACCESSThe function of the wiper system is to clear precipitation (rain, snow, ice. etc.) and foreign material from the windshield to provide a clean vision zone to that occupants in allweather conditions. An annoying phenomenon that affects the performance of windshield wiper systems is wiper chatter. Chatter occurs when the wiper blade does not take the proper set and "skips" acrossthe windshield during operation, potentially causing both acoustic and wipe quality deterioration which significantly affect the satisfaction of our customers. Better understanding of the physics of chatter plus the wiper system is essential for designing a wiper system that is robust against noise, vibration and manufacturing variations. This paper presents an application of the robust design methodology to identify the systemdesign parameters and their proper levels to achieve a robust wiper system in all weather conditions, thereby to reducing/eliminating wiper chatter and improve the customer satisfaction.View full abstractDownload PDF (1474K)
-
Kazuhiko Mikami1997 Volume 5 Issue 2 Pages 66-69
Published: April 01, 1997
Released on J-STAGE: March 24, 2016
JOURNAL FREE ACCESSThere are three types in the synthetic fiber spinning processes : wet, dry, and melting processes. For the spinning of PET (Poly-Ethylene Terephthalate), a melting process is generally used. ln the process , it is essential to produce yarn having a uniform diameter and strength and elongation. Therefore, not only is good manufacturing equipment important as the hardware, but also the information related to manufacturing conditions must be established as the software. In this paper, a manufacturing experiment was conducted using an L18 orthogonal array to improve yam uniformity. A smaller-the-better characteristic was used to evaluate the quality of short-cycle and long-cycle variability.View full abstractDownload PDF (892K)
- |<
- <
- 1
- >
- >|