Technology Reports of Kansai University (ISSN: 04532198) is a monthly peer-reviewed and open-access international Journal. It was first built in 1959 and officially in 1975 till now by kansai university, japan. The journal covers all sort of engineering topic, mathematics and physics. Technology Reports of Kansai University (TRKU) was closed access journal until 2017. After that TRKU became open access journal. TRKU is a scopus indexed journal and directly run by faculty of engineering, kansai university.
Technology Reports of Kansai University (ISSN: 04532198) is a peer-reviewed journal. The journal covers all sort of engineering topic as well as mathematics and physics. the journal's scopes are
in the following fields but not limited to:
Sending important information over the Internet has become a norm nowadays. Protection must be done so that information is not easily hacked and misused. Steganography is one of protection method in which hidden information is inserted into a digital multimedia channel. This paper aims to hide image messages into audio files with different formats using the Least Significant Bit (LSB) and Discrete Cosine Transform (DCT) approaches. We conducted a performance test by measuring the Peak Signal to Noise Ratio (PSNR), endurance to compression, and transparency of the host that has been inserted the message. The results showed that the PSNR value of audio files through the DCT process was greater than that of LSB, subjective assessment of the mean opinion score related to audio files through the LSB process was better than DCT, and all audio files did not have resistance to a compression mode.
This study aims at investigating the service quality and customer satisfaction in automobile aftersales services, using the SERVQUAL Model. The study examined the variables that affect the customers’ satisfaction in aftersales service centers, and assess the service quality using the SERVQUAL model. The study employs a quantitative research approach, by developing and distributing two questionnaires to a sample of 250 respondents to assess service quality and customer satisfaction in the automobile industry. The research mainly found that some service centers need to put more effort and emphasis to enhance the assurance, reliability, empathy, and tangibles dimensions. It is noted that people in all of the targeted service centers are expecting the service providers to invest more in the tangibles, and to install more visually attractive physical materials and facilities. Being the first in this field, the outcomes of this study shall be used as a reference to advance and enhance the automobile aftersales sector in the future, and support car dealers and service centers in improving the quality of their offered services to ensure customers’ optimal satisfaction.