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Preparation and Self-Healing Behaviors of Poly(acrylic acid)/Cerium Ions Double Network Hydrogels
Hongwei Zhou,Guohe Xu,Jie Li,Shihao Zeng,Xiaolong Zhang,Zhaohui Zheng,Xiaobin Ding,Weixing Chen,Qiguan Wang,Wenzhi Zhang 한국고분자학회 2015 Macromolecular Research Vol.23 No.12
This work aims at developing an approach to poly(acrylic acid)/cerium ions (PAA/cerium ions) double network hydrogels and exploring the self-healing properties of the hydrogels, with expectation to provide some clues for constructing new healable gel actuators and enrich the family of self-healable hydrogels. The hydrogel is covalently crosslinked by a traditional crosslinking agent N,N'-methylene bis-acrylamide to form the first network and further physically crosslinked by the ionic interaction between cerium ions and the carboxyl groups in the hydrogel network. The preparation method and self-healing behaviors of the hydrogels are investigated.
Wang Zongshan,Ding Hongwei,Wang Jie,Hou Peng,Li Aishan,Yang Zhijun,Hu Xiang 한국CDE학회 2022 Journal of computational design and engineering Vol.9 No.6
Salp swarm algorithm (SSA) is a well-established population-based optimizer that exhibits strong exploration ability, but slow convergence and poor exploitation capability. In this paper, an endeavour is made to enhance the performance of the basic SSA. The new upgraded version of SSA named as ‘adaptive strategy-based SSA (ABSSA) algorithm’ is proposed in this paper. First, the exploratory scope and food source navigating commands of SSA are enriched using the inertia weight and boosted global best-guided mechanism. Next, a novel velocity clamping strategy is designed to efficiently stabilize the balance between the exploration and exploitation operations. In addition, an adaptive conversion parameter tactic is designed to modify the position update equation to effectively intensify the local exploitation competency and solution accuracy. The effectiveness of the proposed ABSSA algorithm is verified by a series of problems, including 23 classical benchmark functions, 29 complex optimization problems from CEC 2017, and five engineering design tasks. The experimental results show that the developed ABSSA approach performs significantly better than the standard SSA and other competitors. Moreover, ABSSA is implemented to handle path planning and obstacle avoidance (PPOA) tasks in autonomous mobile robots and compared with some swarm intelligent approach-based path planners. The experimental results indicate that the ABSSA-based PPOA method is a reliable path planning algorithm.
Shengjie Zhou,Hongwei Ding,Yifan Zhao,Zhijun Yang,Qianlin Liu 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.1
In the Wireless Sensor Network, a new MAC protocol: one-persistent CSMA protocol with monitoring functions and multichannel mechanism for Wireless Sensor Network based on conflict resolution algorithm is proposed. Protocol from the system throughput, collision rate, better service quality for higher priority and other aspects improve the traditional CSMA system to perfect the controllability of the system, making the system more stable for the big data, better adapted to different business. The average cycle method is used to derive rigorous mathematical expressions of specific relevant parameters. Using MATLAB simulation tool for the accuracy of the agreement is demonstrated.
Research on the Multi-channel P-persistent CSMA Protocol with Monitoring Function
Yingying Guo,Jing Nan,Hongwei Ding,Yifan Zhao,Shengjie Zhou 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.5
This paper presents a new sensor network MAC protocol: the multi-channel p - persistent CSMA protocol with monitoring function (ACKPPCMA) from the perspective of improving the channel utilization and meeting the demand of the high QoS for high priority. Analyze the model by using the average cycle method. The Computer simulation results verify the correctness of the theory. Has some practical significance.
An Efficient Broadcast Authentication Scheme with Batch Verification for ADS-B Messages
( Haomiao Yang ),( Hyunsung Kim ),( Hongwei Li ),( Eunjun Yoon ),( Xiaofen Wang ),( Xuefeng Ding ) 한국인터넷정보학회 2013 KSII Transactions on Internet and Information Syst Vol.7 No.10
As a cornerstone of the next generation air traffic management (ATM), automatic dependent surveillance-broadcast (ADS-B) system can provide continual broadcast of aircraft position, identity, velocity and other messages over unencrypted data links to generate a common situational awareness picture for ATM. However, since ADS-B messages are unauthenticated, it is easy to insert fake aircrafts into the system via spoofing or insertion of false messages. Unfortunately, the authentication for ADS-B messages has not yet been well studied. In this paper, we propose an efficient broadcast authentication scheme with batch verification for ADS-B messages which employs an identity-based signature (IBS). Security analysis indicates that our scheme can achieve integrity and authenticity of ADS-B messages, batch verification, and resilience to key leakage. Performance evaluation demonstrates that our scheme is computationally efficient for the typical avionics devices with limited resources, and it has low communication overhead well suitable for low-bandwidth ADS-B data link.
BSCP-MAC: A Blockchain-Based Synchronous Control Polling MAC Protocol for Wireless Sensor Networks
Yang Zhijun,Kou Qianlan,Ding Hongwei 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.5
In the era of 5G, the concurrency of users in wireless sensor networks increases dramatically, and a blockchain-based synchronous control polling MAC protocol (BSCP-MAC) is designed to avoid information collisions while accelerating information processing efficiency. The protocol proposes to add the polling control system to the underlying blockchain technology to achieve the purpose of system decentralization. Next, the system model and the data distribution method are analyzed, i.e., the packets within the block are served according to the synchronization method. Finally, combining the Markov chain system analysis model and probabilistic mother function analysis method, the scheme is verified in each of the three service strategies of Gated, Exhaustive, and Limited-1, and the results prove that the scheme is correct and feasible. Meanwhile, the three service policies under BSCP-MAC are also compared with each of the three service policies under the traditional single-server polling MAC (TSP-MAC) method respectively. The experiments prove that BSCP-MAC under the blockchain technology architecture significantly reduces packet latency and expands the system throughput. Moreover, all aspects of the system performance are greatly improved from the TSP-MAC, such as reduced network delay, improved information processing efficiency in the face of larger traffic, and increased network resource utilization.