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Smart Parking Sensor Network project aims to develop a low cost sensor based parking system to map the usage of parking areas. This system consists of sensor nodes which can detect the occupancy of parking space; relay nodes to communicate between sensor nodes and the server; server application to get data from the relay nodes and send data to mobile application; and a mobile application to display...
Character recognition techniques for printed documents are widely used for English language. However, the systems that are implemented to recognize Asian languages struggle to increase the accuracy of recognition. Among other Asian languages (such as Arabic, Tamil, Chinese), Sinhala characters are unique, mainly because they are round in shape. This unique feature makes it a challenge to extend the...
The focus of this research was to use Educational Data Mining (EDM) techniques to conduct a quantitative analysis of students interaction with an e-learning system through instructor-led non-graded and graded courses. This exercise is useful for establishing a guideline for a series of online short courses for them. A group of 412 students' access behaviour in an e-learning system were analysed and...
The problem of inferring proteins from complex peptide cocktails (digestion products of biological samples) in shotgun proteomic workflow sets extreme demands on computational resources in respect of the required very high processing throughputs, rapid processing rates and reliability of results. This is exacerbated by the fact that, in general, a given protein cannot be defined by a fixed sequence...
As smart phones and tablets are becoming ubiquitous and taking over as the primary choice for accessing the Internet worldwide, ensuring a secure gateway to the servers serving such devices become essential. CAPTCHAs play an important role in identifying human users in internet to prevent unauthorized bot attacks. Even though there are numerous CAPTCHA alternatives available today, there are certain...
Multiple string matching is known as locating all the occurrences of a given number of patterns in an arbitrary string. It is used in bio-computing applications where the algorithms are commonly used for retrieval of information such as sequence analysis and gene/protein identification. Extremely large amount of data in the form of strings has to be processed in such bio-computing applications. Therefore,...
Pattern matching is commonly required in many application areas and bioinformatics is a major area of interest that requires both exact and approximate pattern matching. Much work has been done in this area, yet there is still a significant space for improvement in efficiency, flexibility, and throughput. This paper presents a hardware software co-design of Aho-Corasick algorithm in Nios II soft-processor...
Protein inference plays a vital role in the proteomics study. Two major approaches could be used to handle the problem of protein inference; top-down and bottom-up. This paper presents a framework for protein inference, which uses hardware accelerated protein inference framework for handling the most important step in a bottom-up approach, viz. peptide identification during the assembling process...
Advances in life sciences over the last few decades have lead to the generation of a huge amount of biological data. Computing research has become a vital part in driving biological discovery where analysis and categorization of biological data are involved. String matching algorithms can be applied for protein/gene sequence matching and with the phenomenal increase in the size of string databases...
Side channel attackers observe external manifestations of internal computations in an embedded system to predict the encryption key employed. The ability to examine such external manifestations (power dissipation or electromagnetic emissions) is a major threat to secure embedded systems. This study proposes a secure multiprocessor architecture to prevent side channel attacks, based on a dual-core...
Nowadays using comprehensive Web chatting is a very popular feature in Websites. Most of the Websites use server-side scripting languages to deliver dynamic web pages to their users. The problem of implementing a chat server with these languages is that there are no long running processes to establish a firm long lived socket connection with the server. Therefore, when the server needs to send some...
One of the security issues in embedded system is the ability of an adversary to perform side channel attacks. Power analysis attacks are often very successful, where the power sequence dissipated by the system is observed and analyzed to predict secret keys. In this paper we show a processor architecture, which automatically detects the execution of the most common encryption algorithms, starts to...
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