Results 31 to 40 of about 12,249 (258)

When to invest in high speed rail [PDF]

Journal of Rail Transport Planning & Management, 2015
Abstract This paper starts by a general review of the costs and benefits of high speed rail, of how they are measured in cost–benefit analysis and of the circumstances in which benefits may be expected to exceed costs. Two approaches are taken to the latter; first, examining models in which values of key parameters are varied to see in what ...
openaire   +1 more source

Ambient‐Stable Transparent P‐Type CuI Transistors Via Room‐Temperature Pulsed Laser Deposition

Advanced Functional Materials, EarlyView.
An in situ PLD fabricated AlOx${\rm AlO}_x$/CuI/AlOx${\rm AlO}_x$ sandwich structure enables stable CuI TFTs with a field‐effect mobility of 2.3 ±$\pm$ 0.7 cm2${\rm cm}^{2}$ V−1${\rm V}^{-1}$ s−1${\rm s}^{-1}$ and excellent ambient stability. Complementary inverters based on CuI:Rb and ZnO:Al exhibit rail‐to‐rail voltage transfer characteristics and an
Yang Chen, Susanne Selle, Michael S. Bar, Michael Lorenz, Holger von Wenckstern, Marius Grundmann   +5 more
wiley   +1 more source

Measuring ice lens initiation in soils by particle image velocimetry

Journal of Rock Mechanics and Geotechnical Engineering
Ice lens initiation is the core issue in understanding the dynamic process of frost heave. However, there are still limitations to find an adequate criterion for describing the formation of ice lens. A series of one-dimensional freezing tests is designed
Jinfeng Li, Jidong Teng, Haosong He, Wenzhang Xu, Jenisha Singh, Sheng Zhang   +5 more
doaj   +1 more source

High-Speed Rail

, 2010
A high-speed rail service can deliver competitive advantage over airlines for journeys of up to about 3 hours or 750 km, particularly between city pairs where airports are located far from city centres. One suitable type of corridor is that which connects two large cities 250-500 km apart.
Amos, Paul, Bullock, Dick, Sondhi, Jitendra   +2 more
openaire   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

A Universal van der Waals Tunneling Injector for Monolayer CMOS

Advanced Materials, EarlyView.
A universal van der Waals injector unlocks polarity‐flexible tunneling contacts for monolayer CMOS. SnSe2, an intrinsically degenerate 2D semiconductor, establishes polarity‐specific band alignments with both WSe2 and MoS2 channels, enabling steep switching, high on/off ratios, and a unified route to low‐power 2D logic.
Hanbin Cho, Jing Huang, Seonguk Yang, Subin Im, Sangwoo Park, Jeongin Yeo, Sungyeon Kim, Gilhwan Do, Wenxuan Zhu, Soobeom Shin, Jongwon Lee, Yongjoon Shin, Do‐Sun Lee, Hu Young Jeong, Tae‐Eon Park, Jun Kang, Kyungmin Ko, Joonki Suh   +17 more
wiley   +1 more source

A survey on user-centric cell-free massive MIMO systems

Digital Communications and Networks, 2022
The mobile data traffic has been exponentially growing during the last several decades. This was enabled by the densification of the network infrastructure in terms of increased cell density (i.e., Ultra-Dense Network (UDN)) and/or the increased number ...
Shuaifei Chen, Jiayi Zhang, Jing Zhang, Emil Björnson, Bo Ai   +4 more
doaj   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

Experimental and Numerical Investigation of Reinforced Soil Slopes With Vertical Rib and Inclined Reinforcement: Application to Embankment Slopes

Advances in Civil Engineering
Reinforced soil technology is widely applied in slope stabilization, yet the optimal configuration of reinforcement remains a key design challenge. This study presents a comprehensive investigation of vertical rib-reinforced and inclined-reinforced ...
Peiyuan Wu, Zhongxiang Lu, Xuqing Pang, Yuzhen Ma, Xinkai Han, Yurui Lyu, Yucheng Li   +6 more
doaj   +1 more source

TF-DMB: A traffic flow theory-based dynamic multi-hop broadcast protocol

International Journal of Distributed Sensor Networks, 2017
In order to ensure traffic safety, the emergency warning message should be transmitted quickly and reliably in vehicular ad hoc networks by multi-hop broadcast.
Weiguang Ding, Hao Wu, Jin Wang
doaj   +1 more source