Ahmed Aliyu

Semantic Search Engine (SSE) has been developed to improve Kumbotso Teacher Educator Journal (KUTEJ) search engine, the software architecture implement an applications in the Semantic Web, based on designs and implementation specified in the Semantic Search Method (SSM). This architecture relies heavily on the ontology that structure underlying data for the purpose of comprehensive and transportable machine understanding. Therefore, the success of the Semantic Web depends strongly on the proliferation of ontology. Ontology model has been used in defining the concept and the association about the SSM.

This paper compares and contrast role based access control (RBAC) approaches in mangodb 2.4 and Informix Online Dynamic Server Version 7.2. We categorize RBAC features under two major areas. User role assignment and assigning privileges. Many commercially successful access control systems for mainframes implement role for secondary administration for example, an operator role could access all resources but not change access permissions, a security officer role could access all resources but have no access e.t.c. my findings is that these products provide a sound basis for implementing the basic features of RBAC, although there are significant differences. In particular, Informix restricts users to a single active role at any time, while mangodb allow multiple roles to be activated simultaneously as per the user's selection. I. INTRODUCTION In computer systems security, role-based access control (RBAC) [1][2] is an approach to restricting systems access to authorized users. It is used by the majority of enterprises with more than 500 employees [3] and can implement mandatory access control (MAC) or discretionary access control (DAC) RBAC is sometimes referred to as role based security. In RBAC permissions are associated with roles, and users are made members of appropriate roles thereby acquiring the roles permissions. This greatly simplifies management of permissions. Roles are created for the various job functions in an organization and users are assigned roles based on their responsibilities and qualifications. In DBMS, The RBAC model forms an integral component of the access control mechanism, and hence the RBAC model data is used for enforcing access control on the various resources (database objects) under the control of the DBMS product [4]. An application system developed using a DBMS can contain a large amount of data with highly differentiated access permissions for different users depending upon their function or role within the organization. Hence database management is a key area which needs mechanisms for management of authorization or privileges. In this paper, we analyze compare and contrast RBAC approaches implemented in mangodb 2.4 and Informix Online Dynamic Server Version 7.2. The RBAC features that are supported have been categorized under two broad areas as follows  User role assignment  Assignable privileges In comparing the features of this complex commercial software packages, it is not always possible to readily obtain the total set of all supported features from product manuals alone. However, it is possible to extract and compare the major differences in features from using the multiple manuals that come with the product this is the approach that has been adopted in this paper.

Due to the advancement of malware which gains privileges to the operating system and drops a malicious code, and allowing unauthorized access to the target computer networks. One of this malware includes a Trojan horse which has access to computer or network with the aid of a user, whether knowingly or unknowingly. This paper presents a frame work of detecting a Trojan horse in network environment (client/server) so as to tackle present kind of Trojan horses (BINGHE). The result of the experiment shows a great potential of the method in allowing the detection and analysing different behaviour and attack of Trojan horse malware in computer and client/server network.

A number of hospitals and medical centres are exploring applications of wireless sensor network (WSN) technology to a wide range of medical applications, including pre-hospital, and in-hospital emergency care, disaster response, and stroke patient rehabilitation. Current Healthcare Wireless Sensor Networks (HCWSN) research trends focus on patient, reliable communication, patient mobility, and energy-efficient routing, among others. The studies focus on different cluster-based routing protocols which are used in increasing energy efficiency of WSN for healthcare application and to point out important issues in cluster-based routing (CBR) protocol that guide to improve them in order to extend their application range. Today, WSNs are becoming popular and many routing protocols have been proposed in the literature with a focus on the hierarchical routing. This paper surveys the WSNs energy-efficient CBR techniques that are used for Healthcare Communication system. Recent advancement and limitations of previous studies were highlighted. The routing protocols are categorized according to their respective energy efficiency. We intend for researchers to quickly identify areas that require more attention and to propose a novel methodology for improving the effectiveness of existing protocols.