Adaptive Real-Time Computation Coordination for the Web Services Based Computing Architecture

2007 ◽  
Author(s):  
Min-Jen Tsai ◽  
Chen-Sheng Wang
Keyword(s):  
Web Services ◽  
Real Time ◽  
Computing Architecture ◽  
The Web

Web Services Description and Discovery for Mobile Crowdsensing

2016 ◽  
Vol 7 (4) ◽  
pp. 31-49 ◽  
Author(s):  
Salma Bradai ◽  
Sofien Khemakhem ◽  
Mohamed Jmaiel
Keyword(s):  
Data Collection ◽  
Web Services ◽  
Real Time ◽  
Rapid Growth ◽  
Common Interest ◽  
Semantic Description ◽  
Common Goal ◽  
Mobile Crowdsensing ◽  
Sensory Data ◽  
The Web

The rapid growth of sensor-enabled smartphone is driven phenomena of common interest to be observed while leveraging people mobility and their sensory data collection. This paradigm known as mobile crowdsensing has demonstrated its efficiency in data collection over the last years, enabling the monitoring of traffic, pollution, people density and more. However, it stills pose interesting challenges, with particular regard to the management of collected data, dealing with their presentation and standardization in an interoperable infrastructure. Current visions of future crowdsensing systems share common goal of integrating those data into powerful real time web services accessible and discoverable via the web. In this paper the authors dig into this axis and define several criteria that allow succeeding it. They pay particular attention to semantic description and discovery techniques and evaluate proposed approaches by defining their strengths and shortcomings. The authors also propose guidelines for future researches.

An Overview of Methodologies and Challenges in Sentiment Analysis on Social Networks

2020 ◽  
pp. 204-213
Author(s):  
Aditya Suresh Salunkhe ◽  
Pallavi Vijay Chavan
Keyword(s):  
Social Networks ◽  
Social Media ◽  
Web Services ◽  
Sentiment Analysis ◽  
Real Time ◽  
Quality Analysis ◽  
Election Campaign ◽  
Real Time Analysis ◽  
User Comments ◽  
The Web

The expeditious increase in the adoption of social media over the last decade, determining and analyzing the attitude and opinion of masses related to a particular entity, has gained quite an importance. With the landing of the Web 2.0, many internet products like blogs, community chatrooms, forums, microblog are serving as a platform for people to express themselves. Such opinion is found in the form of messages, user-comments, news articles, personal blogs, tweets, surveys, status updates, etc. With sentiment analysis, it is possible to eliminate the need to manually going through each and every user comment by focusing on the contextual polarity of the text. Analyzing the sentiments could serve a number of applications like advertisements, recommendations, quality analysis, monetization provided on the web services, real-time analysis of data, analyzing notions related to candidates during election campaign, etc.

Web Services Description and Discovery for Mobile Crowdsensing

Web Services ◽  
2019 ◽  
pp. 1485-1506
Author(s):  
Salma Bradai ◽  
Sofien Khemakhem ◽  
Mohamed Jmaiel
Keyword(s):  
Data Collection ◽  
Web Services ◽  
Real Time ◽  
Rapid Growth ◽  
Traffic Pollution ◽  
Common Interest ◽  
Semantic Description ◽  
Mobile Crowdsensing ◽  
Sensory Data ◽  
The Web

The rapid growth of sensor-enabled smartphone is driven phenomena of common interest to be observed while leveraging people mobility and their sensory data collection. This paradigm known as mobile crowdsensing has demonstrated its efficiency in data collection over the last years, enabling the monitoring of traffic, pollution, people density and more. However, it stills pose interesting challenges, with particular regard to the management of collected data, dealing with their presentation and standardization in an interoperable infrastructure. Current visions of future crowdsensing systems share common goal of integrating those data into powerful real time web services accessible and discoverable via the web. In this paper the authors dig into this axis and define several criteria that allow succeeding it. They pay particular attention to semantic description and discovery techniques and evaluate proposed approaches by defining their strengths and shortcomings. The authors also propose guidelines for future researches.

Web Service Specifications Relevant for Service Oriented Infrastructures

2011 ◽  
pp. 174-198 ◽  
Author(s):  
Eduardo Oliveros ◽  
Jesús Movilla ◽  
Andreas Menychtas ◽  
Roland Kuebert ◽  
Michael Braitmaier ◽  
...  
Keyword(s):  
Web Services ◽  
Web Service ◽  
Real Time ◽  
State Of The Art ◽  
The State ◽  
Data Centre ◽  
Development Tools ◽  
Service Oriented ◽  
The Web

Service Oriented Infrastructures (SOIs) have recently seen increased use, mainly thanks to technologies for data centre virtualization and the emergence and increasing commercial offering of Cloud solutions. Web Services have been seen as a tool to implement SOI solutions thanks to their versatility and interoperability, but at the same time, Web Services have been considered not suitable for providing interactive real-time solutions. In this chapter the state of the art of the Web service technology will be analysed, and their different communication mechanisms and the existing implementations will be compared. Firstly, the different standardisation bodies working on Web service specifications relevant to SOI will be introduced. The various approaches to implement Web services will be described followed by the Web service specifications and the middleware that make use of those specifications, including the description of the commercial interfaces and development tools to create services for the cloud. In the last part of the chapter, the interoperability problems present on the different frameworks and the existing solutions to minimize those interoperability problems will be explained.

On the Development of a PM2.5 Monitoring Network for Real-time Measurements in Urban Environments

2017 ◽  
Vol 68 (4) ◽  
pp. 796-801 ◽  
Author(s):  
Tom Savu ◽  
Bogdan Alexandru Jugravu ◽  
Daniel Dunea
Keyword(s):  
Web Services ◽  
Real Time ◽  
Monitoring Network ◽  
Urban Environments ◽  
Operating Parameters ◽  
Network System ◽  
Preliminary Information ◽  
Successful Design ◽  
Design And Testing ◽  
The Web

A monitoring network system was designed and developed to be deployed in two Romanian cities during the ROkidAIR project for measuring in real time the PM2.5 concentrations. The system comprises 8 stations that were built following the successful design and testing of a PM2.5 optical instrument prototype. The System�s Web services, the data acquisition from the monitoring stations, and the data sending to a GIS-integrated geoportal that includes a decision support system, were firstly evaluated for testing their effectiveness and for eventually defining necessary corrections. After describing the station�s structure and the Web services� main functions, the paper presents data about the most important measured operating parameters of the stations, results from data processing, and conclusions for further developments. Preliminary information collected from a reference gravimetric sampler installed for data inter-comparison with the developed stations is also presented.

scholarly journals Protection of XML-Based Denail-of-Service and Httpflooding Attacks in Web Services Using the Middleware Tool

2018 ◽  
Vol 7 (4.7) ◽  
pp. 322 ◽  
Author(s):  
Abbas Alasri ◽  
Rossilawati Sulaiman
Keyword(s):  
Web Services ◽  
Web Service ◽  
Real Time ◽  
Web Applications ◽  
Denial Of Service ◽  
Software Infrastructure ◽  
Rule Based ◽  
Flooding Attacks ◽  
Rule Based Approach ◽  
The Web

A web service is defined as the method of communication between the web applications and the clients. Web services are very flexible and scalable as they are independent of both the hardware and software infrastructure. The lack of security protection offered by web services creates a gap which attackers can make use of. Web services are offered on the HyperText Transfer Protocol (HTTP) with Simple Object Access Protocol (SOAP) as the underlying infrastructure. Web services rely heavily on the Extended Mark-up Language (XML). Hence, web services are most vulnerable to attacks which use XML as the attack parameter. Recently, a new type of XML-based Denial-of-Service (XDoS) attacks has surfaced, which targets the web services. The purpose of these attacks is to consume the system resources by sending SOAP requests that contain malicious XML content. Unfortunately, these malicious requests go undetected underneath the network or transportation layers of the Transfer Control Protocol/Internet Protocol (TCP/IP), as they appear to be legitimate packets.In this paper, a middleware tool is proposed to provide real time detection and prevention of XDoS and HTTP flooding attacks in web service. This tool focuses on the attacks on the two layers of the Open System Interconnection (OSI) model, which are to detect and prevent XDoS attacks on the application layer and prevent flooding attacks at the Network layer.The rule-based approach is used to classify requests either as normal or malicious,in order to detect the XDoS attacks. The experimental results from the middleware tool have demonstrated that the rule-based technique has efficiently detected and prevented theattacks of XDoS and HTTP flooding attacks such as the oversized payload, coercive parsing and XML external entities close to real-time such as 0.006s over the web services. The middleware tool provides close to 100% service availability to normal request, hence protecting the web service against the attacks of XDoS and distributed XDoS (DXDoS).\  

Business and Technological Aspects of the Web Services

2015 ◽  
Vol 16 (5) ◽  
pp. 153-163
Author(s):  
Taehwan Kim ◽  
Wonjin Jung
Keyword(s):  
Web Services ◽  
The Web

Web Services Architecture Model to Support Distributed Systems

2019 ◽  
Vol 54 (6) ◽  
Author(s):  
Sawsan Ali Hamid ◽  
Rana Alauldeen Abdalrahman ◽  
Inam Abdullah Lafta ◽  
Israa Al Barazanchi
Keyword(s):  
Web Services ◽  
Web Service ◽  
Distributed System ◽  
Modern Technology ◽  
Service Description ◽  
Architecture Model ◽  
Software Applications ◽  
Evolving Model ◽  
The Web

Recently, web services have presented a new and evolving model for constructing the distributed system. The meteoric growth of the Web over the last few years proves the efficacy of using simple protocols over the Internet as the basis for a large number of web services and applications. Web service is a modern technology of web, which can be defined as software applications with a programmatic interface based on Internet protocol. Web services became common in the applications of the web by the help of Universal, Description, Discovery and Integration; Web Service Description Language and Simple Object Access Protocol. The architecture of web services refers to a collection of conceptual components in which common sets of standard can be defined among interoperating components. Nevertheless, the existing Web service's architecture is not impervious to some challenges, such as security problems, and the quality of services. Against this backdrop, the present study will provide an overview of these issues. Therefore, it aims to propose web services architecture model to support distributed system in terms of application and issues.

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