Wireless sensor nodes are usually powered by batteries and deployed in unmanned outdoors or dangerous regions. So, constrained energy is a prominent feature for wireless networks. Since the radio transceiver typically consumes more energies than any other hardware component on node, it of great importance to design optimized routing algorithm prolong network lifetime. In this work, based analysis consumption data transceiver, single-hop forwarding scheme proved consume less multihop within...

Learning from the concept of potential field in physics, hybrid virtual wireless sensor network was constructed based on hop and residual energy nodes. Aimed at maximizing lifetime, we proposed an optimized routing algorithm for multi-sink networks, using force as decision criteria. Avoid strategy low-energy nodes load balancing multiple sinks were applied to dynamically adjust value achieve balanced consumption Simulation results show that balances effectively extends compared with similar...

Aimed at the problem of unbalanced energy consumption cluster heads caused by inter-cluster communications in wireless sensor networks clustering routing protocols, a novel algorithm named head load balanced (CHLBC) is presented. Based on uneven distributed heads, CHLBC builds backbone network's transit route which composed and calculates relay traffic heads. Sensors take head's into consideration process choosing best realize balance Simulation results show that protocol effectively...

Mesh clients in hybrid wireless mesh networks can perform the routing functionality, as well provide end-user applications that are more suitable for tunnels, to improve connectivity of backbone networks. In this article, based on diversity data and limited power supply underground mines, we propose a multi-criteria metric support data-differentiated service. This divides into two types: urgent non-urgent. End-to-end delay is calculated when transmitting data, hop count link load measured...

Mobile Ad Hoc Network (MANET) is suitable for complex environment communication in coal mine. The processes of nutrient flux transfer and path choice Physarum networks are similar to data transmission routing decision MANET. In this paper, we use a optimization model design Physarum-inspired autonomous optimized (PIAOR) protocol adapt the dynamic network topology underground PIAOR introduces status MANET into Poisson equation model, selects reasonable parameters represent performance...

In order to solve uneven data throughput phenomenon for wireless sensor networks under coal mine, which cause "hot spots" problem, energy-efficient clustering scheme based on the energy and distribution density of cluster heads ( UCS-ED ) is proposed, formed by many existing routing protocols used in networks. election phase it put as two elements join election, form an backbone around Sink. Simulation results show that outperform LEACH HEED balancing consumption prolonging network lifetime.

Wireless sensor networks(WSNs) are very important for monitoring underground mine safety. Aimed at the characteristics of structure tunnel in mine, wireless network (TWSN) is presented to monitor tunnel. TWSN has unbalanced communication load which leads early invalidation nodes close base station. The nonuniform clustering algorithm can solve this problem. In our study, method region demarcation discussed theoretically and routing protocol introduced. Simulation results show that...

Network routing has a direct impact on the fairness and efficiency of whole wireless multimedia sensor networks, cooperation nodes in term can be considered as group called coalition. In order to improve sensors each node should take into account choices joining appropriate This paper presents game theoretic approach, coalitional (CRG), which is guideline for choose best The objective proposed method achieve QoS Shapley value used solution CRG. implemented DSR protocol network simulator NS-2...

Mesh clients in hybrid wireless mesh networks can participate networking and routing. When the backbone transmission network is broken, client route forward data, which will eliminate absolute dependence on of traditional infrastructure mine emergency rescue. However, energy limited. Based comprehensive consideration efficiency balance consumption for data transmission, a new cost criterion designed. Energy optimized fault recovered routing algorithm proposed account different states. At...

With the explosively growing amount of online information, recommender system becomes an important tool to help users efficiently find their desired information. In this paper, we propose a Graph Neural Network Social Recommendation Based on Coupled Influence by analyzing social influence 2-level friends (CI-GNNSR). First, mine user’s historical rating information and second-degree Then, learn feature representation movies, multiple Attention Networks (GAT) are used model user-movie network...

City reputation is a valuable asset for the local economy and firms in contemporary society. However, impact of city on micro-level has been largely overlooked by literature. This paper uses National Civilized (NCC) policy China as quasi-natural experiment to enhance reputation. We employ DID approach investigate relationship between corporate risk-taking. The result shows that risk-taking significantly increases following NCC adoption. Moreover, information asymmetry can strengthen positive...

Hybrid wireless mesh networks are more suitable to tunnels in underground mines because clients can perform the routing functionality and provide end-user applications. Types of data transmitted among hybrid diverse power supply is limited. Using virtual potential field, a algorithm proposed support data-differentiated service networks. Based on network parameters, abstracted as fields. The hop count used build depth field. residual energy nodes converted into penalty factor symbolize buffer...

Energy is an extremely critical resource for battery-powered wireless sensor networks. Since data transmission typically consumes more energy than any other activities on a node, it of great importance to design optimized routing algorithm achieve both efficiency and balance together, in order prolong the network lifetime. In this paper, with help concept potential field physics, we distributed by constructing hybrid field. The goal basic approach force packets move toward sink at same time...

Existing applications of mining intelligent mobile terminals are all for the sensing individual terminals, without considering group attributes terminal carriers and cooperation opportunities brought by movement, which is unable to complete large-scale complex tasks. In this article, crowd mine safety monitoring combined construct network coal mine. Aiming at task allocation problem, a mechanism based on weighted undirected graph proposed. First, similarity completion location time quality...

Hybrid wireless mesh networks are suitable to construct emergency communication after disasters in underground mines. The routing decision scene is more difficult give an accurate mathematical description due the constraints of various data types, different transmission requirements, and multi-parameters. Based on fuzzy theory, this article has proposed a fuzzy-logic-based data-differentiated service supported protocol. Through use adaptive system, protocol can provide services make...