Article
Computer Science, Information Systems
Nazib Abdun Nasir, Seong-Ho Jeong
Summary: Information-Centric Networking (ICN) overcomes the drawbacks of the current Internet by offering name-based and information-centric communication, with advantages in security enhancement, user mobility support, and traffic control. The proposed testbed based on ICN architecture, specifically Content-Centric Networking (CCN), outperforms the current Internet architecture in terms of content delivery time and response time.
Article
Chemistry, Analytical
Jose Quevedo, Daniel Corujo
Summary: This paper presents an improved networking architecture, ICN, which perceives content as the core element of networking functionalities and provides new possibilities for optimizing information exchange. The research achieves reduced traffic and storage consumption at the network core by implementing content identification at the network layer and allowing selective retrieval of information from network caches.
Article
Multidisciplinary Sciences
Tawfik Guesmi, Anwar Kalghoum, Badr M. Alshammari, Haitham Alsaif, Ahmed Alzamil
Summary: ICN has been developed as a potential candidate for future networks, focusing on content rather than communication channels. SDN has been proposed to improve networking architectures and combined with ICN to enhance network performance.
Article
Computer Science, Information Systems
Jiana Li, Jun Wu, Changlian Li, Wu Yang, Ali Kashif Bashir, Jianhua Li, Yasser D. Al-Otaibi
Summary: In this article, we propose an information-centric wireless sensor networking scheme with water-depth-aware content caching (ICWSN-WDA). We design a naming scheme and a hybrid communication mode suitable for ICWSN-WDA. The communication mode is divided into push and pull traffic, balancing energy consumption and delay time. We define a push level to determine the water depth to actively push content to, finding a suitable junction point for the two modes. Additionally, we introduce a water-depth-aware caching mechanism based on water depth, popularity, and sensor energy to save energy consumption in deeper water.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Telecommunications
Dong Wang, Xiaonan Wang
Summary: The study introduces a content-centric framework (CCFI) in the Internet environment, which achieves the goals of forwarding content requests to the nearest server and supporting content sharing among multiple sources through a mapping mechanism between unicast addresses and names. Analysis and evaluation show that CCFI effectively reduces content communication costs and latency.
WIRELESS PERSONAL COMMUNICATIONS
(2021)
Article
Computer Science, Information Systems
Bohao Feng, Aleteng Tian, Shui Yu, Jack Li, Huachun Zhou, Hongke Zhang
Summary: This article discusses the integration of IoT communications and content-centric networking and proposes an efficient popularity-based cache consistency management scheme to address the issue of outdated IoT data stored in CCN in-network caching.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Chemistry, Analytical
Pei-Hsuan Tsai, Jun-Bin Zhang, Meng-Hsun Tsai
Summary: This paper presents a novel probe-based routing algorithm that explores real-time in-network caching to ensure the routing table storing the optimal paths to the nearest content provider is up to date. The effectiveness of probe-selections, Pending Interest Table (PIT) probe, and Forwarding Information Base (FIB) probe are discussed and analyzed by simulation with different performance measurements. The results demonstrate that the approach reduces the number of timeout interests and the average response time compared to basic CCN.
Article
Computer Science, Information Systems
M. Dakshayini, R. Rashmi
Summary: The paper introduces a Hierarchical Cooperative-peers Architecture (HCPA) and effective caching approaches to reduce response time and improve network performance. By utilizing resources of fog peer nodes near the user to handle high latency and low bandwidth issues, and implementing Regional demand-based fog Caching (RDFC) approach, the performance of the network is significantly improved.
MULTIMEDIA TOOLS AND APPLICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Nazib Abdun Nasir, Seong-Ho Jeong
Summary: With the advancement of the Internet, users can access it anytime, anywhere, leading to a growing amount of content and a focus on storage policies. Implementing a content popularity ranking mechanism and content caching removal scheme can improve network performance.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Electrical & Electronic
Lu Yang, Ping Li, Miaomiao Dong, Bo Bai, Dmitry Zaporozhets, Xiang Chen, Wei Han, Baochun Li
Summary: This paper proposes a capacity-centric (C2) architecture for future wireless networking, which aims to balance capacity requirements and signaling overhead by maximizing the number of non-overlapping clusters with guaranteed high average cluster capacity.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2022)
Article
Computer Science, Theory & Methods
Muhammad Habib Ur Rehman, Chee Sun Liew, Teh Ying Wah, Muhammad Imran, Khaled Salah, Nidal Nasser, Davor Svetinovic
Summary: The paper introduces an adaptive execution model for mobile data stream mining applications in MECC environments, which is successfully integrated with multiple MDSM applications. Evaluations show that the proposed adaptive execution model outperforms static and dynamic execution models in various metrics.
FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF ESCIENCE
(2021)
Article
Computer Science, Information Systems
Dapeng Man, Qi Lu, Hanbo Wang, Jiafei Guo, Wu Yang, Jiguang Lv
Summary: The Internet of Things (IoT) is a new network concept that focuses on connecting everything through the Internet. Meanwhile, Information-Centric Network (ICN) has gained popularity in recent years as a disruptive communication model that is information-centric. The proposed path cache method based on content correlation aims to make caching decisions more efficient and has been verified through simulation experiments.
COMPUTER COMMUNICATIONS
(2021)
Article
Chemistry, Analytical
Ngoc-Thanh Dinh, Younghan Kim
Summary: This paper highlights the importance of utilizing Content Store (CS) information in information-centric networking (ICN) for efficient content caching and retrieval. Through coordination among neighboring nodes, more popular content objects can be cached in the proximity of the node. Experimental results demonstrate that this caching policy significantly improves cache hit ratio, stretch ratio, content retrieval latency, and energy efficiency compared to state-of-the-art schemes.
Article
Computer Science, Information Systems
Jakob Pfender, Alvin Valera, Winston K. G. Seah
Summary: This paper argues that traditional metrics are insufficient to describe caching performance in the subdomain of information-centric IoT, and introduces two new metrics to provide deeper insights into the effectiveness of in-network caching strategies, demonstrated through experiments on real hardware.
INTERNET OF THINGS
(2022)
Article
Computer Science, Information Systems
A. A. Periola, O. A. Osanaiye
Summary: The rise of internet-based video streaming services has prompted the need for traditional satellite and online platforms to coexist in order to improve content accessibility for subscribers. A proposed novel network architecture aims to address this, reducing content access costs by 39.3% on average. Sharing receiver stations among subscribers could further reduce acquisition costs by significant percentages, showing potential for cost savings in the long run.
MULTIMEDIA SYSTEMS
(2021)
Article
Engineering, Environmental
Kai Guo, Yuxiang Zhu, Zhen Yan, Annai Liu, Xiangze Du, Xin Wang, Wei Tan, Lulu Li, Jingfang Sun, Qing Tong, Changjin Tang, Lin Dong
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Biomedical
Richard Johnson, Michael Rafuse, Prakash Parthiban Selvakumar, Wei Tan
Summary: This study evaluated the impacts of allogeneic bone marrow-derived stromal cells and recipient age on the long-term remodeling of vascular grafts. The results showed significant effects of these factors on graft outcomes. Additionally, compared to acellular grafts, cellular grafts showed efficient recruitment of vascular cells to form more organized structures.
ACTA BIOMATERIALIA
(2021)
Article
Chemistry, Physical
Yaxin Yu, Wei Tan, Dongqi An, Xiuwen Wang, Annai Liu, Weixin Zou, Changjin Tang, Chengyan Ge, Qing Tong, Jingfang Sun, Lin Dong
Summary: Research has shown that SO2 poisoning of NH3-SCR catalysts at low temperature remains a challenge. The formation of sulfate species inhibits the adsorption of NOx, while the formation of ferric sulfate enhances surface acidity, leading to an increase in catalytic activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Wei Tan, Annai Liu, Shaohua Xie, Yong Yan, Thomas E. Shaw, Yu Pu, Kai Guo, Lulu Li, Shuohan Yu, Fei Gao, Fudong Liu, Lin Dong
Summary: Investigating catalytic reaction mechanisms can guide catalyst design, as demonstrated by the innovative CeO2-SiO2 mixed oxide catalyst (CeSi2) with excellent SO2/H2O resistance in harsh working conditions. The strong Ce-O-Si interaction and abundant surface hydroxyl groups on CeSi2 provide active acid sites and inhibit SO2 adsorption, enhancing the NH3-SCR performance through an enhanced Eley-Rideal mechanism. This work offers a strategy to develop an environmentally friendly NH3-SCR catalyst with superior SO2 resistance.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Shaohua Xie, Zhiwei Wang, Wei Tan, Yatong Zhu, Samantha Collier, Lu Ma, Steven N. Ehrlich, Peng Xu, Yong Yan, Tao Xu, Jiguang Deng, Fudong Liu
Summary: A novel two-step wetness impregnation method was developed to fabricate a unique and highly stable CeO2/Al2O3 support, enabling Pd catalysts anchored on this support to exhibit higher activity and thermal stability in CO and hydrocarbon oxidations. This approach can be applied as a universal method to prepare stable metal oxide-alumina-based supports, with broad applications in environmental catalyst design.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Applied
Wei Tan, Jin Wang, Yandi Cai, Lulu Li, Shaohua Xie, Fei Gao, Fudong Liu, Lin Dong
Summary: This study proposes a new strategy of Mo doping to improve the low-temperature SCR activity of CeSi2. A Mo-Ce-Si mixed-oxide catalyst was prepared by a simple co-precipitation method. Mo doping significantly enhances the NH3-SCR activity of CeSi2 and exhibits superior N2 selectivity and resistance to SO2/H2O poisoning.
Article
Chemistry, Multidisciplinary
Wang Song, Jiawei Ji, Kai Guo, Xin Wang, Xiaoqian Wei, Yandi Cai, Wei Tan, Lulu Li, Jingfang Sun, Changjin Tang, Lin Dong
Summary: CeO2/TiO2 catalysts prepared by solid-phase impregnation showed better catalytic activity in low-temperature selective catalytic reduction of NOx with NH3. Surface changes of TiO2 were found to have a significant impact on the improved activity.
CHINESE CHEMICAL LETTERS
(2022)
Article
Engineering, Environmental
Wei Tan, Shaohua Xie, Yandi Cai, Meiyu Wang, Shuohan Yu, Ke-Bin Low, Yuejin Li, Lu Ma, Steven N. Ehrlich, Fei Gao, Lin Dong, Fudong Liu
Summary: This study explores the engineering of surface defects on CeO2 supports through ZrO2 doping to enhance the catalytic performance of Pt/CZO catalysts. Activation by H-2 reduction significantly boosts the catalytic oxidation performance of Pt/CZO catalyst and improves thermal stability, making it superior to Pt/CeO2 in vehicle emission control applications.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Wei Tan, Chunying Wang, Shuohan Yu, Yaobin Li, Shaohua Xie, Fei Gao, Lin Dong, Fudong Liu
Summary: The study revealed that the NH3-SCR activity of Nb2O5-CeO2 and WO3-CeO2 catalysts depends significantly on the strong interaction between the redox component (CeO2) and acidic component (Nb2O5 or WO3), as well as the presence of paired redox-acid sites. At lower temperatures (200 degrees Celsius), NH3-SCR activity is primarily influenced by the surface acidity of the catalysts, while at higher NOx conversion rates, the activity is more determined by the redox properties.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Applied
Lulu Li, Jiawei Ji, Wei Tan, Wang Song, Xin Wang, Xiaoqian Wei, Kai Guo, Wanyu Zhang, Changjin Tang, Lin Dong
Summary: In this work, a supported catalyst consisting of FeOx and MnOx co-supported on aluminum-modified CeO2 was synthesized and applied in the low-temperature NH3-selective catalytic reduction (NH3-SCR) of NO. The study revealed that the SCR activity of the catalyst was significantly influenced by the amount of added aluminum and the appropriate Ce/Al molar ratio. The Fe-Mn/Ce1Al2 catalyst exhibited over 90% NO conversion at a temperature range of 75-250 degrees Celsius and displayed better resistance to SO2 compared to FeeMn/CeO2.
JOURNAL OF RARE EARTHS
(2022)
Article
Engineering, Environmental
Wei Tan, Shaohua Xie, Xin Wang, Chunying Wang, Yaobin Li, Thomas E. Shaw, Lu Ma, Steven N. Ehrlich, Annai Liu, Jiawei Ji, Fei Gao, Lin Dong, Fudong Liu
Summary: The study focuses on the improvement of Pt-CeO2 catalysts by designing new ceria-based supports. Through a unique T-IWI method, a Pt single site catalyst with excellent thermal stability was synthesized on a CZA-T support. The catalyst showed higher oxidation activity and Oxygen storage capacity (OSC) compared to traditional Pt catalysts on regular CeO2/Al2O3 and one-step prepared CeZrOx/Al2O3 supports. The higher Pt dispersion and stronger Pt-O-Ce interaction on the CZA-T support played a vital role in the CO oxidation performance and OSC of the catalyst.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Shaohua Xie, Wei Tan, Yuejin Li, Lu Ma, Steven N. Ehrlich, Jiguang Deng, Peng Xu, Fei Gao, Lin Dong, Fudong Liu
Summary: In this study, an efficient NbCuCe oxide catalyst for reducing NOx emissions in cold-start diesel engines is reported. The catalyst exhibits higher DeNO(x) activity below 200 degrees C compared to the Cu-CHA zeolite catalyst, along with superior sulfur resistance, faster response, and lower NH3 slip. Atomically dispersed Cu species facilitate strong interaction between Cu and the Nb/Ce base catalyst, leading to improved low-temperature redox properties and NH3 adsorption/activation. The developed NbCuCe catalyst shows promising potential for efficient DeNO(x) in cold-start diesel engines and can be combined with Cu-CHA for a broader temperature range of operation.
Article
Chemistry, Multidisciplinary
Shaohua Xie, Liping Liu, Yu Lu, Chunying Wang, Sufeng Cao, Weijian Diao, Jiguang Deng, Wei Tan, Lu Ma, Steven N. Ehrlich, Yaobin Li, Yan Zhang, Kailong Ye, Hongliang Xin, Maria Flytzani-Stephanopoulos, Fudong Liu
Summary: The local coordination structure of metal sites plays a crucial role in the performance of supported metal catalysts. This study successfully fabricated Pt atomic single-layer structures with precisely controlled local coordination environment, which exhibited higher turnover frequency and improved catalytic activity in CO oxidation. This work provides new insights for achieving 100% atomic utilization efficiency and optimal intrinsic catalytic activity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Wei Tan, Shaohua Xie, Xin Wang, Juntian Xu, Yong Yan, Kaili Ma, Yandi Cai, Kailong Ye, Fei Gao, Lin Dong, Fudong Liu
Summary: In this study, an efficient CuO catalyst supported on a CeO2-Al2O3 support (CA-T) prepared by two-step incipient wetness impregnation (T-IWI) method was successfully developed. The Cu/CA-T catalyst exhibited better catalytic performance in CO oxidation and NO reduction by CO (NO + CO reaction) as well as higher thermal stability compared to the CuO catalyst loaded on conventional CeO2-Al2O3 support (Cu/CA). The microstructure of CuO-CeO2-Al2O3 catalysts, especially the state of Cu species, was systematically investigated using various characterization techniques. The mechanisms of CO oxidation and NO + CO reactions on Cu/CA and Cu/CA-T catalysts were collaboratively revealed.
Article
Chemistry, Multidisciplinary
Qinglong Liu, Peng Yang, Wei Tan, Haowei Yu, Jiawei Ji, Cong Wu, Yandi Cai, Shaohua Xie, Fudong Liu, Song Hong, Kaili Ma, Fei Gao, Lin Dong
Summary: The size effect on nanoparticles plays a crucial role in catalysis performance. Tuning the oxygen vacancies on a metal-oxide support can help reduce the size of Pt particles, thus improving the catalysis performance of the supported catalyst. In this study, Ce-Sn solid solutions (CSO) with abundant oxygen vacancies were synthesized. After CO reduction, the catalytic CO oxidation performance of Pt/CSO was significantly better than that of Pt/CeO2. This improvement was attributed to the creation of smaller Pt clusters on CSO with more exposed active sites.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Computer Science, Hardware & Architecture
Xiaolin Gu, Wenjia Wu, Yusen Zhou, Aibo Song, Ming Yang, Zhen Ling, Junzhou Luo
Summary: This study proposes a radio frequency fingerprint identification solution based on crystal oscillator temperature adjustment, which enhances the differences between Wi-Fi device fingerprints and mitigates collision. Experimental results demonstrate the effectiveness of the system in identifying smartphones under different scenarios.
Article
Computer Science, Hardware & Architecture
Yutong Wu, Jianyue Zhu, Xiao Chen, Yu Zhang, Yao Shi, Yaqin Xie
Summary: This paper proposes a quality-of-service-based SIC order method and optimizes power allocation for maximizing the rate in the uplink NOMA system. The simulation results demonstrate the superiority of the proposed method compared to traditional orthogonal multiple access and exhaustive search.
Article
Computer Science, Hardware & Architecture
Songshi Dou, Li Qi, Zehua Guo
Summary: Emerging cloud services and applications have different QoS requirements for the network. SD-WANs play a crucial role in QoS provisioning by introducing network programmability, dynamic flow routing, and low data transmission latency. However, controller failures may degrade QoS. To address this, we propose PREDATOR, a QoS-aware network programmability recovery scheme that achieves fine-grained per-flow remapping without introducing extra delays, ensuring QoS robustness for high-priority flows.
Article
Computer Science, Hardware & Architecture
Ke Wang, Xiaojuan Ma, Heng Kang, Zheng Lyu, Baorui Feng, Wenliang Lin, Zhongliang Deng, Yun Zou
Summary: This paper proposes a method based on a parallel network simulation architecture to improve the simulation efficiency of satellite networks. By effectively partitioning the network topology and using algorithms such as resource assessment and load balancing, the simulation performance is enhanced. Experimental results demonstrate the effectiveness of this method.
Article
Computer Science, Hardware & Architecture
Sijin Yang, Lei Zhuang, Julong Lan, Jianhui Zhang, Bingkui Li
Summary: This paper proposes a reuse-based online scheduling mechanism that achieves deterministic transmission of dynamic flows through dynamic path planning and coordinated scheduling of time slots. Experimental results show that the proposed mechanism improves the scheduling success rate by 37.3% and reduces time costs by up to 66.6% compared to existing online scheduling algorithms.
