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:
Speed control of a series excited d.c motor is primarily achieved through a regulated flux in the field winding. A well-adjusted flux is considered very effective in voltage and speed regulation. This process can be achieved through a field and armature current adjustment using a shunt diverter resistance. Tapped field control and parallel field coils also serve as a veritable measure for the speed control of a dc series motor. Although this method is scarcely used for the speed control of dc series motor. This paper is aimed at investigating the effect of applying a diverter resistance with well-adjusted thyristor firing angles for a controlled rectifier on dc series motor speed control. In this study, the steady state and the dynamic state equations that correlate the speed of dc series motor with diverter resistance and supplied voltage as a function of a thyristor firing angles were derived. Speed characteristics based on the derived equations were determined through simulation in MATLAB 7.14 for different values of diverter resistance and thyristor firing angles under a varying machine load. The simulation results showed that the series dc motor runs at a very high speed above the rated value in the reverse braking mode by increasing the thyristor firing angle beyond 900. Adjusting the firing angle below 900, speed values below the rated speed were obtained as the load current is increased in the forward motoring mode. A proper adjustment of the firing angle regulates the supply voltage as well as the high starting current.
This study aims to examine the benefits and positive impacts of the use of web collaboration in the tourism to support promotion and marketing of the tourism industry by increasing possibility access information of tourism products. The success of promotion and marketing will increase if tourists more often get tourism information with comprehensive information of tourism products. This research applies a qualitative method by reviewing the law on tourism business at provincial level in Indonesia as a basis for tourism web collaboration, awareness and participation of tourism web owners, collaboration and the availability of information system technology to support web collaboration. The results of this study are the model of web collaboration that will have positive impacts on opportunities for accessing tourism information, updating and standardization of tourism information and the technical approach of web collaboration.
