Electric mobility seems to be an innovative alternative to future urban transport. In this study, a steady-state cornering model of a three-wheel narrow electric vehicle is derived. The steady-state cornering analysis is conducted by varying the location of the vehicle center of gravity, speed and tilt angle. From this analysis, the center of gravity location and tilt angle that gives better cornering characteristics can be obtained. Therefore, this analysis helps and can be used as starting point to design the chassis and the tilting control system of the three-wheel narrow electric vehicle.

The purpose of this study is to explore the relationship between attitudes and student learning in physics. The research method used is quantitative research with associative design. The research instrument used was a questionnaire. The data analysis technique used is descriptive statistical analysis and inferential analysis. Descriptive statistics used are the mean, median, mode, and standard deviation. Whereas the inferential statistics that can be used is the collaborative test. Based on research that has been done, there is a positive relationship between attitude and concentration in physics at SMAN 8 Jambi City which is also quite strong when viewed from the sig value generated, which is equal to 0.04.

In this study, a control moment gyroscope is used as an actuator to stabilize the inverted pendulum. A control strategy is proposed to stabilize the inverted pendulum at the upright unstable equilibrium point and to maintain the gimbal angle as small as possible. Such a problem is formulated as a constrained H∞ disturbance attenuation problem and then transformed into solving linear matrix inequalities. The performance of the proposed controller is evaluated through simulation for linear and nonlinear cases. It is shown that the proposed state-feedback control strategy effectively stabilizes the inverted pendulum.

Penelitian ini bertujuan untuk menguji pengaruh dari kompleksitas perusahaan, ukuran perusahaan, reputasi KAP, dan pandemi covid-19 terhadap audit delay. Populasi penelitian adalah perusahaan jasa sektor transportasi yang terdaftar di BEI pada tahun 2018-2020 sebanyak 120 perusahaan, dengan sampel penelitian sebanyak 66 perusahaan. Metode pengambilan sampel menggunakan metode purposive sampling dan Analisa data menggunakan analisis regresi berganda. Pengolahan data menggunakan SPSS versi 26. Hasil penelitian menunjukan kompleksitas perusahaan, ukuran perusahaan, dan reputasi KAP tidak berpengaruh terhadap audit delay. Sedangkan, pandemi covid-19 memiliki pengaruh terhadap audit delay. Hal tersebut dikarenakan meningkatnya risiko-risiko audit yang menyebabkan auditor harus melakukan pemeriksaan risiko (risk assessment). Dan terganggunya kapabilitas auditor dalam pencarian bukti audit yang cukup dan benar diakibatkan oleh terbatasnya akses, perjalanan serta ketersediaan personel karena pertimbangan kesehatan sehingga berdampak pada waktu untuk auditor dalam merilis dan menyampaikan laporan keuangan secara tepat waktu. Dikaitkan dengan teori agensi dan teori kepatuhan, dimana dalam melakukan pengauditan laporan keuangan harus menggunakan kontrak kerja agar dapat mengatur seluruh hak dan kewajiban pada dua belah pihak, dan hal tersebut ada aturannya sehingga perusahaan yang go public harus menyampaikan laporan keuangan tepat waktu.

This study aims to determine the performance of the dynamometer design as a measure of mechanical power on a rotary friction welding machine. The design of the dynamometer includes the design, manufacture, calibration, and testing of the dynamometer. The design and manufacture of strain dynamometers is adjusted to the motor of the rotary friction welding machine at the University of Riau's Mechanical Engineering Production Technology Laboratory. The design of the strain dynamometer has a dimension of 175 mm × 3 mm × 50 mm and serves to determine the motor torque value with the help of a 120 ohm strain gauge sensor. The device designed is equipped with an electrical microcontroller device and an optocoupler sensor to measure the angular speed of the motor. Next, the dynamometer performance testing is performed on the rotary friction welding machine. The results of testing in the rotary welding process, the greater the pneumatic pressure exerted during welding, the greater the measured power. The largest measured power value is 2452.92 Watt in the forging process, and the smallest measured power value is 2050.24 Watt in the first time of the initial motor rotation. After doing the research, it can be concluded that the tools designed and built can work and have a fairly good performance.