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:
Recent years have shown a significant growth in learner corpora in the area of English for Specific Purposes (ESP), specifically in the academic and professional context. For studies in English for Academic Purposes (EAP), analysis on learner corpora mainly focused on aspects of form and function in academic genres. This paper reviews 192 learner corpora to determine their availability and usage according to the two main branches of ESP field: EAP and EOP/EPP (English for Occupational Purposes/ English for Professional Purposes). It also identifies inaccessible learner corpora on the online platforms. The review concludes that EAP has been the prime focus in the field of learner corpus studies compared to EOP/EPP. Additionally, only a handful of specialized and professional genre-related learner corpora can be found whereas academic ones are more common. This review establishes the importance of EOP/EPP learner corpora as one of the ways to increase the genre competence of learners and practitioners of specialized discourses
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
