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This paper presents the dynamic modeling and motion control of a three-link rotary robotic manipulator, also known as an RRR robot. The Kinect motion capture system by Microsoft is used in conjunction with the manipulator. A camera is used to capture the motion of a user's arm and tracks certain angles made by parts of the arm. We consider a pinhole camera model to generate reference angles in our simulations. These desired angles are fed into the controller and are used by the RRR robot in an effort to copy the movement of the user. A proportionalderivative (PD) controller is developed and applied to the manipulator for improved trajectory tracking. The RRR robot is dynamically modeled and the results of the proposed control strategy demonstrate good trajectory following. Researchers can implement this system as a relatively inexpensive starting point for their activities.

This study examines the issue of prestige sensitivity among Millennials in China and the United States. Specifically, this study examines the phenomenon to see if differences exist among Millennials between these two countries. Furthermore, the investigation is expanded to examine possible gender differences. The results are somewhat mixed. While the scale used was both reliable and valid within each country, it did not meet the standard of metric equivalence between cultures, and is thus not valid for cross-cultural comparisons between China and the United States. In addition, some Millennials were found to seek status via high prices in both cultures. ARTICLE HISTORY

In a rotating machine, the dominant forces are applied at multiples of the machine running speed, called orders. An order-tracked ODS is assembled from the peaks at one of the order frequencies in a set of response frequency spectra of a machine. An order-tracked ODS is a convenient way to visualize and monitor the health of the machine.In this paper, it is shown how modes participate in an order-tracked ODS of a rotating machine, and how they participate differently at different operating speeds. It is also shown how the modal participation can be used to expand an order-tracked ODS so that it is suitable for display on a model of the machine. With an animated ODS display, changing vibration levels and vibration hot spots can be observed while the machine is running. IntroductionIt is well known that most rotating machines will exhibit different vibration levels under different loads and speeds. A convenient way to troubleshoot these problems is to visualize the operating deflection shapes (ODSs) of the machine in "real time". This is conveniently done by attaching multiple accelerometers to the machine surfaces, and acquiring vibration data from the machine while it is running. In addition to visualizing the deflection of the machine in real time, an ODS can be used to diagnose machine faults by numerically comparing its current values with previously archived values.All machines and mechanical structures have resonances, also called modes of vibration. Each resonance has a unique natural frequency, damping value, and mode shape. It is well known that if a resonance is excited, the response of the machine or structure can be excessive. In this sense, modes are referred to a "mechanical amplifiers". Over time, sustained excessive vibration levels will cause a variety of failures.When excited, modes participate in or contribute to the overall vibration response of a machine. In an ideal sense, a mechanical structure has an infinite number of modes, but in a practical sense only a few modes participate significantly in its response.In this paper, it is first shown how modal participation in an ODS is calculated. Once the modal participation is known, mode shapes with many components in them can be used to expand the ODS, thus providing a more accurate and realistic description of the machine's vibration. When displayed in animation, an expanded ODS is useful for observing overall vibration levels and for quickly spotting areas of excessive vibration (hot spots) under different operating conditions.