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نتیجه جستجو - Message queue

تعداد مقالات یافته شده: 6
ردیف عنوان نوع
1 Publish–Subscribe approaches for the IoT and the cloud: Functional and performance evaluation of open-source systems
رویکردهای انتشار – اشتراک برای اینترنت اشیا و ابر: ارزیابی عملکرد و کارایی سیستم‌های منبع باز-2022
Publish–Subscribe systems facilitate the communication between services or applications. A typical system comprises the publisher, the subscriber, and the broker but, may also feature message queues, databases, clusters, or federations of brokers, apply message delivery policies, communication protocols, security services, and a streaming API. Not all these features are supported by all systems or, others may be optional. As a result, there is no common ground for the comparison of Publish–Subscribe systems. This paper presents a critical survey and taxonomy of Publish–Subscribe systems, of their design features and technologies. The concepts of message queuing, publish–subscribe systems, and publish–subscribe protocols for the cloud and the IoT are discussed and clarified. The respective evaluation is about seven state-of-the-art open-source systems namely, Apache Kafka, RabbitMQ, Orion-LD, Scorpio, Stellio, Pushpin, and Faye. For the sake of fair comparison, a minimum set of common features is identified in all systems. All systems are evaluated and compared in terms of functionality and performance under real-case scenarios.
keywords: صف پیام | انتشار – اشتراک | معیارها | ارزیابی | Message queue | Publish–subscribe | Benchmarks | Evaluation
مقاله انگلیسی
2 MISS-D: A fast and scalable framework of medical image storage service based on distributed file system
MISS-D: یک چارچوب سریع و مقیاس پذیر از خدمات ذخیره سازی تصویر پزشکی بر اساس سیستم فایل توزیع شده-2020
Background and Objective Processing of medical imaging big data is deeply challenging due to the size of data, computational complexity, security storage and inherent privacy issues. Traditional picture archiving and communication system, which is an imaging technology used in the healthcare industry, generally uses centralized high performance disk storage arrays in the practical solutions. The existing storage solutions are not suitable for the diverse range of medical imaging big data that needs to be stored reliably and accessed in a timely manner. The economical solution is emerging as the cloud computing which provides scalability, elasticity, performance and better managing cost. Cloud based storage architecture for medical imaging big data has attracted more and more attention in industry and academia. Methods This study presents a novel, fast and scalable framework of medical image storage service based on distributed file system. Two innovations of the framework are introduced in this paper. An integrated medical imaging content indexing file model for large-scale image sequence is designed to adapt to the high performance storage efficiency on distributed file system. A virtual file pooling technology is proposed, which uses the memory-mapped file method to achieve an efficient data reading process and provides the data swapping strategy in the pool. Result The experiments show that the framework not only has comparable performance of reading and writing files which meets requirements in real-time application domain, but also bings greater convenience for clinical system developers by multiple client accessing types. The framework supports different user client types through the unified micro-service interfaces which basically meet the needs of clinical system development especially for online applications. The experimental results demonstrate the framework can meet the needs of real-time data access as well as traditional picture archiving and communication system. Conclusions This framework aims to allow rapid data accessing for massive medical images, which can be demonstrated by the online web client for MISS-D framework implemented in this paper for real-time data interaction. The framework also provides a substantial subset of features to existing open-source and commercial alternatives, which has a wide range of potential applications.
Keywords: Hadoop distributed file system | Data packing | Memory mapping file | Message queue | Micro-service | Medical imaging
مقاله انگلیسی
3 Energy-aware dynamic Internet of Things security system based on Elliptic Curve Cryptography and Message Queue Telemetry Transport protocol for mitigating Replay attacks
سیستم امنیتی پویا اینترنت اشیاء انرژی آگاه مبتنی بر رمزنگاری بیضوی منحنی و پروتکل حمل و نقل تله متری پیام برای کاهش حملات پخش-2019
Security in the context of Internet of Things (IoT) is a critical challenge. The purpose of this work is to model and evaluate a dynamic IoT security system based on a generic IoT edge network in which nodes exchange messages through the Message Queue Telemetry Transport (MQTT) protocol. This work aims to increase MQTT security by mitigating data tampering, eavesdropping and Replay attacks by using the Elliptic Curve Cryptography (ECC), timestamps and wake up patterns, with the purpose of preserving node energy. The evaluated results will show that it is possible to increase the system lifetime by linking security levels and energy.
Keywords: IoT | ECC | MQTT | Replay attacks | IDS
مقاله انگلیسی
4 An enhanced framework for multimedia data: Green transmission and portrayal for smart traffic system
یک چارچوب پیشرفته برای داده های چند رسانه ای: انتقال و تصویر سبز برای سیستم ترافیک هوشمند-2018
The object tracking in video surveillance for intelligent traffic handling in smart cities re quires an enormous amount of data called big data to be transmitted over the network using the Internet of Things. Manual monitoring and surveillance are impossible because traditional computer vision technologies are no more useful for massive processing and intelligent decision making. In this paper, a framework is proposed which enables both on spot data processing and intelligent decision making by using cloud computing. The de veloped application is a trained on Artificial Neural Network, which can handle different traffic techniques with congested traffic scenario and priorities traffic such as ambulance handling. The Message Queue Telemetry Transport protocol is used for green transmission with mobile access to traffic data. The results analyzed with thirty videos processed data which handle real-time data prioritization for the people for smart surveillance to fastest route and enhance the intelligent data transmission.
Keywords: Internet of thing ، Big data ، Cloud computing ، Green transmission ، Artificial Neural Network ، Object tracking
مقاله انگلیسی
5 Technologies of Internet of Things applied to an Earthquake Early Warning System
کاربرد تکنولوژی اینترنت اشیاء برای سیستم های هشدار به هنگام زلزله-2017
Internet of Things (IoT), more than smart homes and connected appliances, is to reach physical knowledge in real-time and remotely; and taking advantage of the smartphone’s increasing diffusion, it is possible using its embedded sensors to monitor the environment, anytime and anywhere; this could be the solution to many community problems as well as natural hazards. This paper focuses on the solution to one of the most deadly natural hazards, earthquakes; taking seismic data of Ecuador, a country with an average of 6 earthquakes per day in 2013. Technologies of IoT like Sensor Web Enablement Framework (SWE) and Message Queue Telemetry Transport (MQTT) give the benefit of achieving an Early Warning System capable of anticipating up to 12 seconds the maximum seismic peak in the epicentre zone through smartphones. The system is supported by a wireless sensor network and its main components, requirements and design decisions are described. It considers time and spatial analyses, not present in any other work, making it more precise and customizable, and adapting it to the features of the geographical zone and resources. A preliminary evaluation of the solution was conducted to determine its strengths and weaknesses in terms of response time. The obtained results indicate that the energy consumption is as relevant for end-users as their personal security.
Keywords: Sensor Web Enablement | Sensor Observation Service | Internet of Things | Wireless sensor network | Distributed system | Real time system
مقاله انگلیسی
6 AUPS: An Open Source AUthenticated Publish/Subscribe system for the Internet of Things
AUPS: یک منبع باز تصدیق انتشار / سیستم اشتراک برای اینترنت اشیاء -2016
The arising of the Internet of Things (IoT) is enabling new service provisioning paradigms, able to leverage heterogeneous devices and communication technologies. Efficient and secure communication mechanisms represent a key enabler for the wider adoption and diffusion of IoT systems. One of the most widely employed protocols in IoT and machine to-machine communications is the Message Queue Telemetry Transport (MQTT), a lightweight publish/subscribe messaging protocol designed for working with constrained devices. In MQTT messages are assigned to a specific topic to which users can subscribe. MQTT presents limited security support. In this paper we present a secure publish/sub scribe system extending MQTT by means of a key management framework and a policy enforcement one. In this way the flow of information in MQTT-powered IoT systems can be flexibly controlled by means of flexible policies. The solution presented is released as open source under Apache v.2 license.
Keywords: Internet of Things | Security | Publish & Subscribe | MQTT | Middleware | Prototype
مقاله انگلیسی
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