This paper presents a detailed control strategy to a PWM bidirectional DC-DC transferring system designed for high voltage, high power applications. The objective is to realize precise bidirectional power flow control between two DC grids, where the half bridge topology is adopted for the connection between them. By using the averaging technique, the system’s nonlinear average model is derived,...

Interdisciplinary research in the 21st century is characterized by bidirectional flows: one domain provides inspiration to another, which, after an advance, provides inspiration back to the donating domain. In this abstract I outline three such flows between the domains of evolutionary biology and robotics. First, biological evolution shapes all aspects of an organism’s body and brain simultane...

Deep learning systems for complex natural language processing tasks like question answering are often large, cumbersome models that require excessive computational power and time. We seek to address this issue by exploring efficient and parallelizable alternatives to the more computationally expensive components of one of the top-performing question-answering architectures. In particular, we ex...

Pedestrian dynamics has been being a popular research area. In this paper, breakdown probability in the bidirectional flow that includes pedestrians with heterogeneities is investigated. Reaction time appears to have the most pronounced breakdown probability, followed by desired velocity and then body size. The relationship between the start time of breakdown and inflow reflects the decreasing ...

In this paper, we will explore machine comprehension in Stanford Question and Answering Dataset using ensembled deep recurrent neural networks with bi-directional attention flow. Given a context paragraph, we attempt to answer a query related to the context paragraph. This requires use to not only generate knowledge representation for each question and paragraph, but also create mechanisms that...

A set of sigma-pi units randomly connected to two input vectors forms a disorganized type of hetero-associative memory related to convolutionand matrix-based associative memories. Associations are represented as patterns of activity rather than connection strengths. Decoding the associations requires another network of sigma-pi units, with connectivity dependent on the encoding network. Learnin...

We consider the 2-Way Multi Modal Shortest Path Problem (2WMMSPP). Its goal is to find two multi modal paths with total minimal cost, an outgoing path and a return path. The main difficulty lies in the fact that if a private car or bicycle is used during the outgoing path, it has to be picked up during the return path. The shortest return path is typically not equal to the shortest outgoing pat...

Due to demand for decreasing CO2 emission and improving fuel-efficiency of vehicles, research and development of electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) is being revitalized worldwide. In advance of widespread use of EVs and PHEVs, Europe, United States and Japan have cooperated and worked on the international standardization of the vehicle charging system. We have ...

Circulating tumor cells are responsible for seeding metastatic growth at distant sites. Kim et al. (2009) now discover that circulating tumor cells can reinfiltrate tumors at their primary organs and promote tumor progression.

Background and Purpose: In this study we analyzed the value of ultrasound examination for diagnosis of vertebral artery dissection. Methods: The vertebrobasilar arterial system was assessed in 14 patients using transcranial and extracranial pulsed-wave Doppler and duplex sonography. Results: The dissections were verified by angiography (in 1 patient), magnetic resonance imaging (in 5), or both ...