Design and development of smart parking system based on fog computing and internet of things

Current parking systems employ a single gateway‐centered solution (i.e., cloud) for data processing which leads to the possibility of a single point of failure, data loss, and high delays. Moreover, the parking‐spot selection process considers criteria that do not maximize parking utilization and revenue. The pricing strategy does not achieve high revenue because a fixed pricing rate is utilized. To address these issues, this paper proposes a smart parking system based on the Internet of Things (IoT) that provides useful information to drivers and parking administrators about available parking spots and related services such as parking navigation, reservation, and availability estimation. A multi‐layer architecture is developed that consists of multiple sensor nodes, and fog and cloud computing layers. The acquired parking data are processed through fog computing nodes to facilitate obtaining the required real‐time parking data. A novel algorithm to obtain the optimal parking spot with the minimum arrival time is also presented. Proof‐of‐concept implementation and simulation evaluations are conducted to validate the system performance. The findings show that the system reduces the parking arrival time by 16%–46% compared to current parking systems. In addition, the revenue is increased for the parking authority by 10%–15%

DESIGN AND OPERATION OF FACE MILLING CUTTERS WITH BODY FITTED WITH DAMPING RINGS MADE OF COMPOSITE MATERIAL

A mathematical model describing the process of a strength analysis of a combination body of the milling has been developed with the use of experimental data on the physical and mechanical characteristics of the offered high-damping composite materials; the dynamic and operational characteristics of the milling cutter developed have been determined. The roughness of the machined surfaces has been decreased by 16 to 38%, the capacity of semi-finish and finish face milling has been increased. The milling cutter has been introduced at "Splav" State Scientific-Production Plant (Tula)Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

CAPWAP status and design considerations for seamless roaming support

Wireless LAN technologies have picked up momentum in the recent years due to their ease of deployment, cost and availability. The era of wireless LAN has also given rise to unique applications like VOIP, IPTV and unified messaging. However, these real-time applications are very sensitive to network and handoff latencies. To successfully support these applications, seamless roaming during the movement of mobile station has become crucial. Nowadays, centralized architecture models support roaming in WLANs. They have the ability to manage, control and troubleshoot large scale WLAN deployments. This model is managed by Control and Provision of Wireless Access Point protocol (CAPWAP). This paper covers the CAPWAP architectural solution along with its proposals that have emerged. Based on the literature survey conducted in this paper, we found that the proposed algorithms to reduce roaming latency in CAPWAP architecture do not support seamless roaming. Additionally, they are not sufficient during the initial period of the network. This paper also suggests important design consideration for mobility support in future centralized IEEE 802.11 networks

Setup latency analysis of CAPWAP Centralized WLAN Network

High number of Access Points (APs) in large-scale networks have introduced several overheads such as control,management and monitoring. Distributing and maintaining a consistent configuration while considering security issues presentseven more challenges in large deployments and new architectures. These issues forced many network vendors such as Aruba,Cisco and Meraki to offer proprietary centralized solutions. Since the proposed solutions don’t provide any form ofinteroperability, Control and Provisioning of Wireless Access Point (CAPWAP) Working Group had defined standardinteroperable protocol to address the aforementioned problems. By using Access Controller (AC) and Wireless TerminationPoint (WTP), this interoperable protocol allows network operators to control their wireless network infrastructure and extendsmanageability. This paper evaluates the latency involved with setup process in three cases; normal setup process, pre-configured setup process and setup process with considering failure states. The results showed that the main latencycontributor is the Discovery phase, while the error during DTLS Establishment phase cost more time than other phase

Design and Fabrication of Smart Home With Internet of Things Enabled Automation System

Home automation systems have attracted considerable attention with the advancement of communications technology. A smart home (SH) is an Internet of Things (IoT) application that utilizes the Internet to monitor and control appliances using a home automation system. Lack of IoT technology usage, unfriendly user interface, limited wireless transmission range, and high costs are the limitations of existing home automation systems. Therefore, this study presents a cost-effective and hybrid (local and remote) IoT-based home automation system with a user-friendly interface for smartphones and laptops. A prototype called IoT@HoMe is developed with an algorithm to enable the monitoring of home conditions and automate the control of home appliances over the Internet anytime and anywhere. This system utilizes a node microcontroller unit (NodeMCU) as a Wi-Fi-based gateway to connect different sensors and updates their data to Adafruit IO cloud server. The collected data from several sensors (radio-frequency identification, ultrasonic, temperature, humidity, gas, and motion sensors) can be accessed via If This Then That (IFTTT) on users’ devices (smartphones and/or laptops) over the Internet regardless of their location. A set of relays is used to connect the NodeMCU to homes under controlled appliances. The designed system is structured in a portable manner as a control box that can be attached for monitoring and controlling a real house. The proposed IoT-based system for home automation can easily and efficiently control appliances over the Internet and support home safety with autonomous operation. IoT@HoMe is a low cost and reliable automation system that reduces energy consumption and can notably provide convenience, safety, and security for SH residents

Performance measures for endoscopy services: A European Society of Gastrointestinal Endoscopy (ESGE) Quality Improvement Initiative

The European Society of Gastrointestinal Endoscopy (ESGE) and United European Gastroenterology present a list of key performance measures for endoscopy services. We recommend that these performance measures be adopted by all endoscopy services across Europe. The measures include those related to the leadership, organization, and delivery of the service, as well as those associated with the patient journey. Each measure includes a recommendation for a minimum and target standard for endoscopy services to achieve. We recommend that all stakeholders in endoscopy take note of these ESGE endoscopy services performance measures to accelerate their adoption and implementation. Stakeholders include patients and their advocacy groups; service leaders; staff, including endoscopists; professional societies; payers; and regulators.SCOPUS: ar.jinfo:eu-repo/semantics/publishe