Results 131 to 140 of about 1,875,197 (298)

Define cyberspace security

网络与信息安全学报, 2018
The booming development of the Internet brought unparalleled revolution to production and social life style, and the Internet itself has become the new driving force of economy in almost every country. However, It is embraced that not only development opportunities, but also enormous security challenges in the cyberspace.
openaire   +2 more sources

Substrate Engineering of SWCNT p–n Junctions for Dual‐Mode Power Generation and Heat‐Flux Sensing

Advanced Science, EarlyView.
Through substrate engineering alone, a single‐walled carbon nanotube p–n junction device switches between two functions under uniform infrared irradiation. A low‐absorbance substrate sustains a central hot junction for continuous power generation, whereas high‐absorbance substrates transiently invert the temperature gradient for sensitive heat‐flux ...
Ryota Tamai, Hiroto Nakayama, Shuya Ochiai, Masayuki Takashiri   +3 more
wiley   +1 more source

Renyi entropy-driven network traffic anomaly detection with dynamic threshold

Cybersecurity
Network traffic anomaly detection is a critical issue in network security. Existing Abnormal traffic detection methods rely on statistical-based or anomaly-based approaches, and these detection methods all require a full understanding of traffic ...
Haoran Yu, Wenchuan Yang, Baojiang Cui, Runqi Sui, Xuedong Wu   +4 more
doaj   +1 more source

Differential Tissue‐Coupled Powering for Battery‐Free Injectable Electroceuticals

Advanced Science, EarlyView.
A thread‐like injectable neural stimulator is powered through differential tissue‐coupled powering (DTCP), which harvests RF‐frequency tissue potentials with an elongated receiver while preserving a injectable cross‐section. The system integrates an ASIC, stimulation electrodes, and a portable transmitter, enabling wireless peripheral nerve stimulation,
Han Wu, Sultan Mahmud, Mali Halac, Asif Iftekhar Omi, Domenica Sofia Baez Rodas, Jeremiasz Dados, Chaojun Cheng, Anyu Jiang, Cameron Wallace, Anvi Singh, Erin Patrick, Baibhab Chatterjee, Shriya Srinivasan, Adam Khalifa   +13 more
wiley   +1 more source

Bag2image: a multi-instance network traffic representation for network security event prediction

Cybersecurity
In practical scenarios, security events triggered by abnormal network traffic often result from the collective behavior of multiple data streams, embodying group security events with collective characteristics.
Jiachen Zhang, Daoqi Han, Zhaoxuan Lv, Yueming Lu, Junke Duan, Yang Liu, Xinyu Zhang   +6 more
doaj   +1 more source

Cyberspace and European security

, 2017
Nowadays, cyberspace constitutes one of the major channels for satisfying the needs, rights and interests of EU citizens. Throughout the last decade, cybersecurity incidents have increased at a frantic pace, thus becoming an important threat to the supply of basic services and affecting the economy of EU Member States.
Alfaro Pérez, Joaquín, Arboleda Guirao, Inmaculada Jesús   +1 more
openaire   +1 more source

Groundwater Rise Sustains the World's Largest Alpine Water System Under Global Warming

Advanced Science, EarlyView.
Shallow groundwater depth (SGWD) across the non‐permafrost plains of the Qinghai–Xizang Plateau decreased at averagely 0.02 m year−1, adding 31.44 Gt of freshwater storage from 2000 to 2020 and sustaining ∼53 500 km2 of alpine ecosystems. A vadose‐zone capacity of 426.6 Gt reveals these aquifers as promising reservoirs, highlighting groundwater's ...
Jianqing Du, Zhixiang Niu, Yanfen Wang, Shirui Zhou, Youqing Yang, Xiang Wei, Haishan Niu, Yitao Zhang, Anquan Xia, Yali Liu, Yanbin Hao, Kai Xue, Bingfang Wu, Xinquan Zhao, Tandong Yao, Yiyu Chen   +15 more
wiley   +1 more source

ID-insensitive deepfake detection model based on multi-attention mechanism

Scientific Reports
Deepfake technology has enabled the widespread distribution of manipulated facial content online, raising serious societal concerns. In recent years, deepfake detection has emerged as a critical research focus.
Yuncan Sheng, Zhengrui Zou, Zongxuan Yu, Mengxue Pang, Wei Ou, Wenbao Han   +5 more
doaj   +1 more source

Sustained Self‐Powered Real‐Time Vibration Monitoring Through Integrated Nonlinear Harvesting and Energy‐Aware Wireless Sensing

Advanced Science, EarlyView.
A self‐powered vibration sensing platform integrates a quasi‐zero‐stiffness piezoelectric harvester, synchronized electric charge extraction, energy management, and wireless ADC acquisition. Ambient vibration is simultaneously harvested as energy and digitized as information, enabling sustained real‐time waveform monitoring without external power.
Yizhou Li, Ye Zhang, Hao Tang, Yaozi Zheng, Yawei Wang, Chaoyang Zhao, Liwei Dong, Dewen Yu, Junlei Wang, Chunbo Lan, Guobiao Hu   +10 more
wiley   +1 more source

BERT: advancements in language understanding for different NLP tasks: challenges and future perspectives

Journal of Electrical Systems and Information Technology
Natural Language Processing (NLP) has significantly evolved from computational linguistics, enabling computers to comprehend the structure and meaning of human language, by better extracting data or information from text-based documents and enhancing ...
Md Saiful Islam, Li Xiangdong, Jubayer Ahmed   +2 more
doaj   +1 more source