Global Journal of Computer Science and Technology (GJCST)
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A New Ranking Algorithm for A Round-Robin Tournament
Get PDFThe problem of ranking players in a round- robin tournament, in which outcome of any match is a win or a loss, is to rank players according to their performances in the tournament. In this paper, we have improved previously developed MST (Majority Spanning Tree) algorithm for solving this problem, where the number of violations has been chosen as the criterion of optimality. We have compared the performance of our algorithm with the MST algorithm and GIK algorithm
Comparative Study of Symmetric Key Algorithms-Des, AES and Blowfish
Get PDFThis paper presents a peer analysis in the field of encryption algorithms, concentrating on private key block ciphers which are generally used for bulk data and link encryption. We have initially surveyed some of the popular and efficient algorithms currently in use. This paper focuses mainly on the different kinds of encryption techniques that are existing, and comparative study together as a literature survey. This study extends to the performance parameters used in encryption processes and analyzing on their security issues. Cryptography is the practice and study of hiding information. Prior to the modern age, cryptography was almost synonymous with encryption i.e. the conversion of information from a readable state to unreadable state. In order to avoid unwanted persons being able to read the information, senders retain the ability to decrypt the information. There are three types of Cryptography. They are Asymmetric-key cryptography, symmetric key cryptography and hashing. Encryption methods in which both the sender and receiver share the same key are referred to as symmetric key cryptography. This paper provides a comparison between symmetric key algorithms such as DES, AES, and Blowfish. The comparison is made on the basis of these parameters such as block size and key size
Face Recognition Using Morphological Analysis of Images
Get PDFFace recognition from still and motion image has been an active and emerging research area in the field of image processing, pattern recognition and so on in the recent years . The challenges associated with discriminant face recognition can be attributed to the following factors such as pose, facial expression, occlusion, image orientation, image condition, presence or absence of structural component and many more. In this paper, we have tried to emphasize on the morphological analysis of images based on the behavior of the intensity value. Firstly images with various situations of a person are selected as training images. Based on the min, max and average characteristics of images, the training model has been built. Morphological analysis like binary image processing, erosion and dilation play the important role to identify the facial portion of an image from the whole one. Finally face recognition has been made for input images based on their intensity value measurement. The training images collected from various database such as YALE, ORL, and UMIST and others. The algorithm performed well and showed 80 percent accuracy on face predictio
Alpha Trimmed Mean based JPEG Compression for an Objective Image Quality Enhancement of Noisy and Noise less Images
Get PDFWe can see that over the past few years, the number of people using internet and the amount of information that is being transmitted over the internet has grown to such a wide range. One of the best ways to reduce the image size is via image compression. In the compression of still image, JPEG is better when it comes to bandwidth conservation. In this paper, we discussed an innovative JPEG compression algorithm with alpha trimmed means based clustering. The proposed algorithm is expected to produce better results in terms of MSE, PSNR and number of bits transmitted, when compared to the standard algorithms. The proposed JPEG algorithm enhances the speed and reduces the number of encoded bits, thereby reducing the amount of memory required. The reassembled image after decompression is as similar as the input image
Survey: Trust-based Approaches to Solve Routing Issues in MANET
Get PDFA mobile ad hoc network is a wireless network. The ability to work without any central controlling authority without any requirement of established infrastructure makes it need of the present scenario. This dynamicity comes with a downside of security. Since the nodes may act maliciously and pose threat to the working condition of the MANET. Trust approaches are well suited in these situations. Here we discuss TRUST; the meaning, characteristics and different schemes
Threats and Problems of Cloud Computing and Ways of Providing Security
Get PDFCloud computing electronic is a collection of servers and storage spaces operating systems and software platforms and applications of different application that resides on the Internet and you are able to use it without having to know any details of the technique with him all you need to know in order to take advantage of the services it provides is the knowledge of the user name and password your own These services many advantages they face many of the threats and risks that could affect seriously the data and information used if it is seriously keen to understand and put the right solutions to avoid them Cloud computing is the security and protection of the data subject Despite that these clouds may be more defensible from a personal device but the possibility of data loss is a problem The goal of research to identify the cloud computing and the advantages and disadvantages and you must know the gaps and weaknesses and how to identify solution
Quality Assurance in Requirement Engineering
Get PDFRequirement engineering is the most important process in software development life cycle. Quality assurance in requirement engineering has a great impact on the product quality. It checks whether the requirements meet the desired quality attributes i.e. adequacy, completeness, consistency etc. Quality Assurance of the requirement is important because the cost of requirements failure is very high. The proposed research is based on the survey of the quality assurance in requirement engineering. The major focus of this research paper is to analyze the quality parameters which assure the overcome of the issues related to the requirements. The research papers include brief overview of those parameters