The emergence of wide bandgap power devices has brought the attention back to flying capacitor (FC) multilevel inverters with a large number stages, in an effort increase density by minimizing passive components. main challenge that such systems face, particularly ones based on high-frequency Gallium-Nitride and small-value ceramic capacitors, relate stringent requirements for precise fast bala...

Abstract Solving the great problems of our time will require reimagining capitalism by balancing power free market with capable, democratically accountable government and strong civil society. Changing purpose firm has potential to make this process rebalancing significantly easier. Purpose-driven firms could be catalysts in drive for systemic change supporting transformation within their own i...

Imbalance-induced vibration of rotating machineries is an important factor limiting the performance and fatigue life of a rotor system. Particularly, the severe resonant vibration of a rotor when it passes through its critical speeds could damage the rotor system. To avoid this peak vibration, this paper presents an active balancing method to offset the imbalance of the rotor system during acce...

The 3L-NPC (Neutral-Point-Clamped) is the most popular multilevel converter used in high-power medium-voltage applications. An important disadvantage of this structure is the unequal distribution of losses among the switches. The performances of 3L-NPC structure were improved by developing the 3L-ANPC (Active-NPC) converter which has more degrees of freedom. In this paper the switching states a...

The evolution of computer systems based on fine-grain multithreaded program execution models introduces both unique opportunities and tough challenges for the support of dynamic load balancing. Although load balancing is an active research topic in the distributed computing field, there is still a lack of a detailed study of the different dynamic load balancing strategies under a fine-grain mul...

This paper describes methods used in stabilizing the walking gait of TAO-PIE-PIE, a small humanoid robot given rate feedback from two RC gyroscopes. TAO-PIE-PIE is a fully autonomous small humanoid robot (30cm tall). Although TAO-PIE-PIE uses a minimal set of actuators and sensors, it has proven itself in international competitions, winning honors at the RoboCup and FIRA HuroSot competitions in...

Vibration suppression of rotating machinery is an important engineering problem. In this paper, a review of the research work performed in real-time active balancing and active vibration control for rotating machinery, as well as the research work on dynamic modeling and analysis techniques of rotor systems, is presented. The basic methodology and a brief assessment of major difficulties and fu...

coach's emotional intelligence inspires health and development of sport teams. balancing emotion and thought, emotional intelligence influences conflict conditions in workplace environment. the aim of this study was to explore the relationship between emotional intelligence and conflict management styles in the active karate coaches in isfahan province in 2012. 285 subjects were selected f...

Our actions shape what we learn. Because of this dependency, learners are proficient at choosing their actions to maximize their information gain. But learning often unfolds in social contexts where learners have both informational goals (e.g., to learn how something works) but also social goals (e.g., to appear competent and impress others). How do these different factors shape learners’ decis...

This paper presents our preliminary research into the autonomous control of an alpine skiing robot. Based on our previous experience with active balancing on difficult terrain and developing an ice-skating robot, we have implemented a simple control system that allows the humanoid robot Jennifer to steer around a simple alpine skiing course, brake, and actively control the pitch and roll of the...