Performance of Retrieval Information System For Medical Images

Problem statement : In this article the principles of building knowledge and retrieval information system will be applied to medical images in some studied hospital. Since there is a huge number of medical images this system will organizes and manages the operation of retrieving and displaying such images to the persons who need such images in short time and in high quality services. Approach : From relevance assessments we can compute measures of retrieval performance such as: Recall (R), discrimination DC, and Precision. Results: both recall and precision of the system are linearly depend on relevant items correctly retrieved. Conclusion : Number of retrieved images from huge total number of medical images in some hospital determine the systems' recall, discrimination, and precision of the retrieval information system

Distribution Systems Efficiency

This paper constructing a measurement system for determining the efficiency of the distributed system. This efficiency depends on many parameters like number of terminals, number of customers and kind of information, number of nodes, and number of messages. It is found that the efficiency depends strongly on number of messages sent or received inside the distributed system, as the number of messages increased the efficiency decreased. Keywords: distributed system, terminals, efficiency

Measuring the Latency of Semantic Message Oriented Middleware System

Abstract This paper presents an investigation and analysis of the performance of services in publish-subscribe middleware working in the networks. The publish/subscribe paradigm of Message Oriented Middleware provides a loosely coupled communication model between distributed applications. Traditional publish/subscribe middleware uses keywords to match advertisements and subscriptions and does not support deep semantic matching. In this paper the message latency is measured as a relation with message interval for both methods of messaging: Message Oriented Middleware (MOM), and Java Message Service (JMS). It is found that the message latency have an inverse non-linear relationship with message interval. Keywords: publish-subscribe, middleware, semantic matching I Introduction Many large-scale distributed systems today need to connect thousands of systems that are widely distributed and change frequently throughout their lifetime. This challenge motivates the demand for middleware that can provide loosely coupled communication models for distributed systems, allowing each component to evolve independently. While traditional point-to-point and synchronous communication models are popular in rigid and static applications, MessageOriented Middleware (MOM), provides a versatile middleware system to loosely integrate distributed system

Review and Measuring the Efficiency of SQL Injection Method in Preventing E-Mail Hacking

E-mail hackers use many methods in their work, in this article, most of such efficient methods are demonstrated and compared. Different methods and stages of such methods are listed here, in order to reveal such methods and to take care of them but the most common discussed method in this paper is SQL method. SQL injection is a type of security exploit in which the attacker adds SQL statements through a web application’s input fields or hidden parameters to gain access to resources or make changes to data. It is found that the SQL is an efficient way in preventing E-mail hacking and its efficiency reaches about 80%. The method of SQL injection can be considered as an efficient way comparing with other methods