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:
Rain attenuation is an important propagation impariments causes by troposphere which degrades the performance of Earth space communication links operating above 10 GHz frequencies. It will be the main challenge to design future Ka and V-bands satellite communication systems with high reliability. The time delay of transmission is considered as a potential technique to mitigate rain fades at these bands. To design and implement this technique requires measured real-time rain attenuation data for desired frequencies which are not obtainable at most of the places. This paper proposes a new concept of rain rate gain which can be defined as the difference of real-time rain rate with and without time delay. For the same period of time at same location, it is assumed that rain rate with time delay can represent rain attenuation with time delay by the proposed method. A model is developed to predict rain rate gain with different time delays from annual measured statistics without delay which is available at most of places. The rain rate with 1-minute integration time was measured at International Islamic University Malaysia, Kuala Lumpur campus for one year and is used to develop the model. The predicted rain rate gain was compared with rain attenuation gain using Ku-band measured data at two locations in Malaysia and found similar behavior. Hence it is recommended that rain rate with delay which is converted from annual statistics can be utilized to analyze time diversity technique at any desired frequency for rain fade mitigation
This study aims to analyze the forecasting the CO2 emission, population, GDP growth of energy consumption in the Rubber, Chemical and Petroleum Industries sectors of Thailand. The scope of research employed the input-output table of Thailand from the year 2000 to 2015. It was used to create the model of CO2 emission, population, GDP growth and predict ten years and thirty years in advance. The model used was the ARIMAX Model and VARMA Model which was divided into two models. The results show that from the first model which predicted the duration of ten years (2016-2025) by using ARIMAX Model (2,1,2), Thailand has average 17.65% higher quantity of CO2 emission than the energy consumption sector (in 2025). The second model predicted the duration of 30 years (2016-2045) by using VARMA Model (2,1,3) shows that Thailand has average 39.68% higher quantity of CO2 emission than the energy consumption sector (in 2025). From the analyses, it shows that Thailand has continuously higher quantity of CO2 emission from the energy consumption. This negatively affects the environmental system and economical system of the country incessantly. This effect can lead to unsustainable development
This work dwells on the performance evaluation of saline landfill leachate treatment for removing concentrated ammonia Cal-nitrogen, NH3-N (3449 mg/L) and suspended solids, SS (1035 mg/L) by using clinoptilolite. The treatment efficiency of both contaminants was investigated via a batch experiment involving five vital variables of specified ranges including particle size (75 to 355 μm), adsorbent dosage (10 to 140 g), reaction time (5 to 70 min), pH (5 to 10), and stirring speed (50 to 400 rpm). The study revealed high removal capacities of NH3-N and SS up to 59% and 57% respectively, achieved at respective optimum operating variables of 75 to 150 μm, 110 g/750 mL, 60 min, pH 9, and 250 rpm. The adsorption equilibrium mechanism suited well with the Langmuir isotherm and pseudo-second-order kinetic models. The procedure is potential to be employed for the remediation of high concentration pollutants in mature and methanogenic saline landfill leachate as an integrated process with other methods either as a pre or post-treatment. However, a pilot plant test is recommended to further establish the treatment design criteria prior to its real application in the field
There are many types of discharge detection method being studied in the past to monitor insulator surface discharges with new methods being introduced from time to time. Recently, measurements on the ultraviolet signals emitted during insulators' surface discharges have shown to be a good method to detect surface discharge from the insulator transmission line. The most common method is the ultraviolet imaging method and ultraviolet pulse method. However, the ultraviolet imaging method is known to be expensive. Hence, laboratory investigations were carried out where UVTRON R2868 Flame Sensor was used to detect the ultraviolet signal emitted from insulator during discharge activities. In this study, the insulator samples used were glass and ceramic type of pin insulators to verify the effectiveness of flame sensors in detecting ultraviolet pulse from both types of material of insulator. Day and rainy conditions were also simulated in the environmental chamber for both type insulator materials. Various discharge intensities were generated to closely mimic the service condition by varying the applied voltage in order to study the correlation between the ultraviolet signals of various discharge levels with the type of insulator material. At the end of the study, the result shows that the flame sensor could detect the ultraviolet pulse emitted from both types of pin insulators during the day and rainy conditions. This study illustrates that the ultraviolet pulse method using the UVTRON R2868 flame sensor is another potential tool to monitor the insulator surface condition during service
Traveloka, as an online-based startup business about booking airplane tickets, hotels, trains, and several other online services, in about five years, has become a startup business that received the title of Unicorn. Traveloka has two web-based platforms and applications that can be used on gadgets or smartphones. Rapid development cannot be separated from the millennials founders and even millennial employees. And they have a robust mutual awareness as human beings in information technology that drives their high performance. This reality encourages further study of the interpretive construction of Millennial employees' fantasies about Information Technology-based work, the achievement of shared awareness about Traveloka institutions through symbolic convergence. And understand the process of forming fantasy through the climate and organizational culture in improving the performance of Traveloka employees. Through the perspective of Ernest Bormann's thought about symbolic convergence in the creation of shared awareness in millennial imaginations and understanding of organizational communication and the symbolic interaction process of Blumer, this research tries to understand it. Subjective paradigm, interpretive variety of qualitative approaches as a method of study through participatory research and co-research. Research finds a reality that shows that the similarity of fantasy facilitates the formation of new fantasies. Flexible & Responsible Organizations support the growth of intellectual honesty, empathy, strong responsibilities to employees. The development of rhetorical discourse and the dramatization of the profession and the legitimacy of similar discourse bind a sense of brotherhood and strong dedication to employees. In a discourse on the Professionalism of Informatics Technology context, Traveloka is one of the best Unicorns in Indonesia. This modern organization provides high salaries and facilities that support employees' credibility to become the ultimate end of the millennial account
