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:
High-frequency ultrasonic transducer has been used in an underwater non-destructive application, underwater acoustic imaging, and high-frequency sonar. Normally, all these applications need a high-resolution transducer. For this reason, the transducer must be a high-resolution transducer subsequently, the transducer must be a good receiving sensitivity and wide bandwidth. In this paper, a flexible piezoelectric ultrasonic transducer (FPUT) was designed and characterized in an open-circuit receiving response for underwater application. The target operating frequency is a high-frequency ultrasonic range between 25 kHz to 1.5 MHz for an acoustic transducer. Polyimide is used as a flexible substrate for the cover layer and the flexible circuit. The electrodes for positive potential and ground were designed in a lateral structure whereby this design can improve the receiving sensitivity. A Polyvinylidene fluoride (PVDF) film was functioning as a sensing element and placed on the top of an electrode. A polyimide layer is used as it is a semipermeable membrane manufactured principally for use in water purification or water desalination systems. A 3M tape was used as a matching layer interface between water and PVDF. The air backing was used as a signal absorber to expand the frequency bandwidth. The pulse-echo method is used to characterize the sensitivity of ultrasonic transducer in underwater. The receiving sensitivity and frequency bandwidth are two important parameters to describe the electro-acoustic energy conversion efficiency of an ultrasonic transducer. An FPUT has a receiving sensitivity of -25.1827 dB rel 1 V/µPa dB with a resonance frequency of 425 kHz. The frequency bandwidth of this FPUT is 61.2%. This can conclude that a FPUT with air backing is capable to be a high receiving sensitivity ultrasonic transducer and wide frequency bandwidth for high-frequency ultrasonic applications
Recent studies suggest a potential relationship between intellectual capital, dynamic capabilities, and innovation performance in achieving a successful business. The contribution of dynamic capabilities to innovation performance remains unclear and at the center of the debate. Based on a systematic literature review, the purpose of this research is to develop a tool for measuring the relationship between intellectual capital and dynamic capability toward better innovation performance. Relatively, the research instrument was a questionnaire of 48 questions classified according to the study variables. The distributed samples of the questionnaire were 55, whereas 44 samples returned for analysis in comparison to Cronbach's Alpha. The study found that the instrument designed to measure intellectual capital has shown a positive outcome. Based on the scores aforementioned, the instrument of this study has shown high levels of reliability. Most of the measurements demonstrate that the existence of a high tendency for the usability of dynamic capabilities in enhancing intellectual capital for better innovative performance. Lastly, the most promising approach seems to be indirect, as it appears that dynamic capabilities primarily cause change and intermediate outcomes, though far from being the most hypothesises relationship
This study aims to optimize the manufacturing time when surface grinding carbon steel. To access effects of input parameters on replaced grinding wheel diameter for minimizing the manufacturing time, eight parameters consisting of the initial diameter of grinding wheel (Do), width of grinding wheel (Wgw), total depth of cut (z), ISO grade numbers of surface roughness (Ns), Rockwell hardness of work-piece (HRC), radial grinding wheel wear per dress (Wpd), total depth of dressing cut (aed) and wheel life (Tw) were investigated as input data. An experimental design with a 2-level factorial design with ½ fraction was set up, and 128 (2(8-1)) experiments were performed. Also, to access the effect degree of input parameters on output responses, the Pareto chart and Normal plot of the standardized effects were established and analyzed. Using linear regression method, a mathematical model, which shows the relationship between the optimal replaced grinding wheel diameter and the input parameters, was also proposed
The primary objective of this study is to validate and evaluate the proposed study model to enhance information security awareness (ISA) among Omani public sector employees. The increase in cyberattacks targeting the information infrastructure in Omani government units highlights the importance of protecting the information infrastructure by enhancing security awareness among employees. The proposed model was constructed by incorporating variables of three psychological theories—the theory of planned behavior, protection motivation theory and general deterrence theory—in addition to two facilitating conditions, namely, organizational support and communication. Positivism was used as a philosophy in this study, and a quantitative approach was applied in a survey of respondents. A main survey was conducted, and answers were analyzed from 391 respondents, all employees from various units of the Omani public sector. The results of this study led to all hypotheses being accepted, with the exception of one hypothesis, where structural equation modelling failed to support the link between perceived certainty of sanctions and employees’ ISA behavioral intention. Moreover, the measurement and structural models demonstrated strong fit indices. This study provides important information for researchers interested in the field of information security as it contributes to enriching the body of relevant literature and enhancing ISA in Oman
In the area of Pasuruan, East Java, Indonesia, earthquakes often occur in the vicinity (land and sea) with a magnitude of about 4 Mw, which causes the local Pasuruan fault. Despite their relatively small magnitude, earthquakes generated along faults can pose significant hazards to densely populated areas and infrastructure. Therefore, it is very necessary to study the level of geological disaster vulnerability in the area using geophysical gravity and microseismic methods to determine the geological structure and characteristics or local site resilience of the area. From the results of measurement and data analysis using the gravity method through the gravity tensor, it shows that the Pasuruan area is included in the anticline area and there are also shallow faults that are closely related to the folding process. Meanwhile, from the microtremor method, it was found that the value of the natural frequency (𝑓𝑜) ranged from 1 Hz to 10 Hz and the amplification factor (𝐴𝑜) ranged from 2 to 8, while the vulnerability index (𝐾𝑔) in the western part of the Pasuruan fault had a higher value (20 to 36) than in the East (1 to 12). Thus, the weak zone which is very at risk at the time of the earthquake is in the western part of the Pasuruan fault
