Existing hybrid energy storage control methods typically allocate power between different types by controlling DC/DC converters on the DC bus. Due to its dependence bus, this method is limited centralized and challenging apply in enhancing operation of distributed storage. To address issue, paper proposes a strategy based grid-forming converters. By flexibly utilizing Virtual Synchronous Generator (VSG) virtual impedance control, distribution capability converter enhanced meet needs At same...

Coxsackievirus (CV) A6 has been widely considered as the main cause of global hand, foot, and mouth disease (HFMD) outbreaks. Despite serious threat to children's health posed by emerging CV-A6, our knowledge epidemiological features etiology HFMD caused new CV-A6 strains remains limited. In present study, we aimed investigate genetic characterizations CV-A6-associated outbreaks in Henan Province, China between 2021 2022. Clinical data biospecimens 407 children with mild severe infection...

Considering extremely limited energy of sensor nodes, how to utilize the nodes effectively prolong survival time wireless network (WSN) is crucial. Aiming at monitoring application in particular regions, residual and distance constraint condition between cluster heads are taken into consideration. A new clustering algorithm (EDL, Energy Distance LEACH) proposed solve issues finite balance WSN. Comparison simulation tests EDL LEACH was conducted. Results showed that could make head distribute...

As a promising solution for the next generation mobile networks (5G) deployment, long term evolution-unlicensed (LTE-U) is expected to improve spectrum utilization and channel capacity, which beneficial industrial Internet of Things integrating many heterogeneous networks. However, such technology migration can potentially induce severe interference devices originally operating on unlicensed bands, especially Wi-Fi network. In this paper, first all, we emulate coexistence LTE-U networks,...

This work addresses a multi-agent cooperative navigation problem that multiple agents together in an unknown environment order to reach different targets without collision and minimize the maximum time they spend. Typical reinforcement learning-based solutions directly model policy as steering policy. However, when each agent does not know which target head for, this method could prolong convergence reduce overall performance. To end, we combination of dynamic selection avoidance Since these...

Topology control (TC) is one of the most important techniques for connection establishments between entities in Internet Things, especially scenario where there are no fixed infrastructures such as prompt sensor deployments, emergency communications, and vehicle-vehicle communications. The goal TC to assign per-node transmission power that resulting topology energy efficient also satisfies some global graph property connectivity. Among literatures, however, few efforts focused on issue with...

Unmanned air vehicles (UAVs) can improve better network performance for ground-based wireless MANETs (mobile ad hoc networks). In this paper, we consider a typical scenario of MANET with UAV as the relay node and ground nodes both connect other nodes. We study how to connectivity throughput network. By formulating mobility strategy an optimization problem, propose LP-WCTUS (Load Priority Weighted Center Track Update Strategy) algorithm. Simulation results show that has comparing existing...

Advanced informatics technologies facilitate the construction of green smart cities, especially Wi-Fi implementation and management, for rapidly increasing personal devices in autonomous environments residing nonoverlapped channels often result low energy efficiency severe cochannel interference. In this paper, a management framework is constructed order to reduce overall consumption through turning off portion access points (APs) aggregating their users other active APs. A...

Self-managed access points (APs) with growing intelligence can optimize their own performances but pose potential negative impacts on others without energy efficiency. In this paper, we focus modeling the coordinated interaction among interest-independent and self-configured APs, conduct power allocation case study in autonomous Wi-Fi scenario. Specifically, build a `coordination platform (CWP), public for APs interacting each other. OpenWrt-based physical world are mapped to virtual agents...

Currently, the widely deployed Wi-Fi devices generally reside in three non-overlapped channels, resulting severe co-channel interference and performance deterioration. The avoidance of using Partially Overlapped Channels (POC) is mainly because complicated effects among them, which has not been well studied. In this paper, we build an OpenWrt based measurement system, focus on analyzing influence POC two typical types interference: in-range hidden terminal interference. 4-AP testbed office...

The channel assignment in the non-overlapped space may result low spatial utilization and non-uniform Wi-Fi performance, which makes it difficult to cater rapid increase devices as well wireless traffic demand. In this paper, we propose a Green management framework for an enterprise environment order densely deploy access points (APs), appropriately turn off portion of APs coordinate with partially overlapped channels (POCs). Commencing power monitoring experiment, first demonstrate that...

An in-depth study on a lighting location system is conducted in this paper. Firstly, the history and application of are summarized. The overall structure detailed, including detection principle lightning location, orientation method, circuit, method discriminating cloud flash ground signal, error analysis, guideline for station deployment, preprocessing central station, function data server user interface. development monitoring China presented, construction new generation Hubei Province...

Residential wireless networks have grown rapidly in the past decade. Meanwhile, dense deployments and autonomous managements of home Access Points (APs) greatly increase channel congestion levels degrade user experience. To address such problems, this paper proposes an architecture residential environments called Wi-Fi Union (WU), where APs can voluntarily join WU become "member APs". helps member decrease their by assigning channels a coordinated manner with incentive considerations. First,...

Self-managed smart devices with growing intelligence can optimize their own performances but pose potential negative impacts on others. The concept Cyber Physical Social System (CPSS), originated from (CPS), takes the social dimension into considerations and provides a new paradigm for interactions between self-managed devices. In this paper, we focus modeling interaction among devices, conduct case study in autonomous WiFi scenario. Specifically, propose an active interference measurement...

Previous studies have shown the WiFi, as dominant last hop access to Internet, has become weakest link in round-trip network delay. Therefore it is critical understand and minimize WiFi interference order reduce For first time literature, this paper defines an intuitive accurate metric quantify impact of on each actual packet. packet traveling through point, measures percentage MAC layer delay wasted due neighbor APs' interference. This defined based a packet's various (measured or inferred)...

Abstract By analyzing the lightning protection and grounding requirements of respective systems communication base station power tower, impact towers on their is analyzed. establishing a simulation calculation model shared tower’s grid, mature algorithm used to analyze current distribution typical tower. And ground potential distribution, so as obtain degree influence equipment when system struck by lightning. According impact, technical common scheme iron tower are proposed.

An arc extinguishing lightning protection device with a multi-arc chamber structure has been gradually applied to the overhead line protection, but process and key factors of building internal multi-phase flow suppression still need be studied. In this paper, based on theory magnetohydrodynamics Euler’s high velocity field model, simplified model coupled polyphase longitudinal air in multi-pipe is established, approximate solution made, development extinction mechanism are obtained. At same...

Residential wireless networks have grown rapidly in the past decade. Meanwhile, dense deployments and autonomous managements of home Access Points (APs) greatly increase channel congestion levels degrade user experience. To address such problems, this paper proposes an architecture residential environments called Wi-Fi Union (WU), where APs can voluntarily join WU become "member APs". helps member decrease their by assigning channels a coordinated manner with incentive considerations. First,...

The person-following technique has a promising prospect in living and industrial applications, but it encounters several practical issues such as scene changes pose variations, especially when deployed on mobile robot with limited computing power. In order to address the challenges scenario, this study formulates visual target-positioning procedure proposes Slow-fast Target-Positioning Framework (STPF) provide robust target positions real time. Within framework, fast branch enables real-time...