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Articles 181 - 191 of 191
Full-Text Articles in Engineering
Distributed Active Learning With Application To Battery Health Management, Huimin Chen, X. Rong Li
Distributed Active Learning With Application To Battery Health Management, Huimin Chen, X. Rong Li
Huimin Chen
No abstract provided.
Contextualized Mobile Support For Learning By Doing In The Real World, Ray Bareiss, Natalie Linnell, Martin Griss
Contextualized Mobile Support For Learning By Doing In The Real World, Ray Bareiss, Natalie Linnell, Martin Griss
Ray Bareiss
This research addresses the use of mobile devices with both embedded and external sensors to provide contextualized help, advice, and remediation to learners engaged in real-world learn-by-doing tasks. This work is situated within the context of learning a complex procedure, in particular emergency responders learning to conduct urban search and rescue operations. Research issues include the design and delivery of contextualized performance support and the inferring of learner actions and intentions from sensor data to ensure that the right support is delivered just in time, as it is relevant to what the learner is doing.
Voltage Impulse Induced Bistable Magnetization Switching In Multiferroic Heterostructures, Tianxiang Nan
Voltage Impulse Induced Bistable Magnetization Switching In Multiferroic Heterostructures, Tianxiang Nan
Tianxiang Nan
We report on voltage impulse induced reversible bistable magnetization switching in FeGaB/lead zirconate titanate (PZT) multiferroic heterostructures at room temperature. This was realized through strain-mediated magnetoelectric coupling between ferroelectric PZT and ferromagnetic FeGaB layer. Two reversible and stable voltage-impulse induced mechanical strain states were obtained in the PZT by applying an electric field impulse with its amplitude smaller than the electric coercive field, which led to reversible voltage impulse induced bistable magnetization switching. These voltage impulse induced bistable magnetization switching in multiferroic heterostructures provides a promising approach to power efficient bistable magnetization switching that is crucial for information storage.
Fpga Implementation Of Pipeline Digit-Slicing Multiplier-Less Radix 2 2 Dif Sdf Butterfly For Fast Fourier Transform Structure, Yazan Samir, Rozita Teymourzadeh, Masuri Othman, Shabiul Islam
Fpga Implementation Of Pipeline Digit-Slicing Multiplier-Less Radix 2 2 Dif Sdf Butterfly For Fast Fourier Transform Structure, Yazan Samir, Rozita Teymourzadeh, Masuri Othman, Shabiul Islam
Dr. Rozita Teymourzadeh, CEng.
Optimised Toolbox For The Design Of Rotary Reluctance Motors, Grace I, Rozita Teymourzadeh, Bright S, Aravind Cv
Optimised Toolbox For The Design Of Rotary Reluctance Motors, Grace I, Rozita Teymourzadeh, Bright S, Aravind Cv
Dr. Rozita Teymourzadeh, CEng.
Finding An Optimal Path: Highways Versus Local Roads, Gabriel Leiner
Finding An Optimal Path: Highways Versus Local Roads, Gabriel Leiner
Gabriel Leiner
Commuters across the United States are often presented with the dilemma of whether to wait at an onramp to get on a highway or look for short-cuts on local roads. An answer to this question may lie in the use of Dedicated Short Range Communication (DSRC) wireless technology. With the touch of a button, connected vehicle technology could allow drivers to access real time information about the sizes and speeds of queues at highway onramps, as well as the signal phases of traffic lights on local roads. In the future, drivers could rely on this information to make valid judgments …
Performance Of Polarization Diversity In A Linear Array Antenna, Amean S. Al_Safi
Performance Of Polarization Diversity In A Linear Array Antenna, Amean S. Al_Safi
Amean S Al_Safi
Multiple antennas systems require a separation distance between these antennas greater than or equal half wavelength. In this paper, we study the ability to reduce these separation distance by virtue of polarization diversity, i.e each two adjacent antenna replaced by one dual polarized antenna .The obtained results show that the use of polarization will reduce the required separation distance between antennas and the performance will be best, and these improvement will be more useful at the systems with greater number of antennas, increasing the correlation between antennas due to the separation angle will reduce the channel capacity. The results also …
Link Scheduling In Multi-Transmit-Receive Wireless Networks, Hong-Ning Dai, Soung Chang Liew, Liqun Fu
Link Scheduling In Multi-Transmit-Receive Wireless Networks, Hong-Ning Dai, Soung Chang Liew, Liqun Fu
Hong-Ning Dai
This paper investigates the problem of link scheduling to meet traffic demands with minimum airtime in a multitransmit-receive (MTR) wireless network. MTR networks are a new class of networks, in which each node can simultaneously transmit to a number of other nodes, or simultaneously receive from a number of other nodes. The MTR capability can be enabled by the use of multiple directional antennas or multiple channels. Potentially, MTR can boost the network capacity significantly. However, link scheduling that makes full use of the MTR capability must be in place before this can happen. We show that optimal link scheduling …
Exploring Security Improvement Of Wireless Networks With Directional Antennas, Hong-Ning Dai, Dong Li, Raymond Chi-Wing Wong
Exploring Security Improvement Of Wireless Networks With Directional Antennas, Hong-Ning Dai, Dong Li, Raymond Chi-Wing Wong
Hong-Ning Dai
There are a number of studies on using directional antennas in wireless networks. Many of them concentrate on analyzing the theoretical capacity improvement by using directional antennas. Other studies focus on designing proper Medium Access Control (MAC) protocols to improve the practical network throughput. There are few works on the security improvement using directional antennas. In this paper, we explore the benefits of directional antennas in security improvements on both singlehop and multi-hop wireless networks. In particular, we found that using directional antennas in wireless networks can significantly reduce the eavesdropping probabilities of both single-hop transmissions as well as multi-hop …
Steady-State And Transient Performance Of Oman Transmission System With 200mw Concentrated Solar Power Plant, Omar H. Abdalla, Rashid S. Al-Badwawi, Hilal S. Al-Hadi, Hisham A. Al-Riyami, Ahmed Al-Nadabi
Steady-State And Transient Performance Of Oman Transmission System With 200mw Concentrated Solar Power Plant, Omar H. Abdalla, Rashid S. Al-Badwawi, Hilal S. Al-Hadi, Hisham A. Al-Riyami, Ahmed Al-Nadabi
Omar H. Abdalla
The paper presents steady-state and transient studies to assess the impact of a 200MW Concentrated Solar Power (CSP) plant connection on the Main Interconnected Transmission System (MITS) of Oman. The CSP plant consists mainly of a solar field with parabolic trough collectors, two thermal storage tanks, heat exchangers, piping systems, steam turbine, and electric generator. Two proposed locations are considered to connect the CSP plant to MITS: Manah and Adam 132/33kV grid stations in Al-Dakhiliah region. The transmission grid model of 2015 has been updated to include the simulation of the proposed 200MW CSP at either Manah or Adam. The …
Measuring The Operational Efficiency Using Data Envelopment Analysis Of A Greek Internet Service Provider, Ioannis Karamitsos, Charalambos Apostolopoulos, Christos Apostolopoulos
Measuring The Operational Efficiency Using Data Envelopment Analysis Of A Greek Internet Service Provider, Ioannis Karamitsos, Charalambos Apostolopoulos, Christos Apostolopoulos
John P. Karamitsos
No abstract provided.