A Secured Agent-based Model for a Peer-to-Peer System

In this paper, information exchange that is devoid of control in the peer-to-peer communication, exposes peer to malicious activities, insecure communication, loss of significant data or failure of the system. The complexity and perceived compromise in peers communicating at different levels necessitates modeling a secured agent-based model for a peer-to-peer system. This work was designed to accommodate peer registration phase that will allow peers on satisfying defined requirement, request for connection to the super peer, subsequently guaranteeing and promoting healthy system. The agent module in the network ascertains successfully connected peers on the network, certifying feedback agent goal and ready for peer communication. The result shows that peculiar security attacks from malicious and un-registered peers are systematically controlled in the peer-to-peer system. Key words : Peer-to-peer, Agent-based, Secured and Communication. DOI: 10.7176/CEIS/12-2-03 Publication date: May30th 202

Information Technology and Computer Science

Abstract-Error and error related issues have been a challenge in the development and reliable usage of computing systems and application. The ability to detect minute error in a system improves the reliability of the system by aiding developers and users to know were challenges are so that they can be fixed during development and even when the system is already in use. In other to achieve that different algorithm have been used including the Cyclic Redundancy Check 16-bit, 32-bit and higher bits. In this paper, error detection schemes are examined and the way they check and detect error in multi-user request and transmitted system. The paper also offers improvement on a Cyclic Redundancy Checks 32-bit detection algorithm for the detection of error that can occur in transmitted data and on stored, backed-up and archived data in the system without consuming large resources as the higher bits.

Developing a Crime Mapping GIS System For Law Enforcement: A Case Study of Owerri Metropolis, Nigeria

Abstract: This paper examines the use of GIS in the development of a crime analysis information system for the Nigeria police. In recent times, criminality has been on the increase with criminals using new and more sophisticated ways to commit crime; resulting to fear and restlessness among the citizens. They police have found it difficult to manage and control these crimes largely due to the obsolete methods and resources they employ in doing so. The purpose of this study is to see how the Nigerian Police Force can adopt the use of crime maps in its operations and reap the benefits. The system will help the police in the analysis of crimes which will lead to crime hotspots identification. Using ArcGIS Software 10.0, we created a digital land use map of crime hotspots in the area and a crime-geospatial database. The results of the spatial analysis and a 500m buffering done on the data shows that areas that are more vulnerable to crime, have no police stations situated around them. This study shows that a GIS based Information system will give the police better insights into crime mapping and analysis which will be a tool to help them effectively manage and combat crime. This study recommends full government involvement in the area of human personnel and infrastructure development for the police to effectively change from the traditional to GIS based ways of combating crime

Digestive system complications among hospitalized children with sickle cell anaemia in Enugu, Nigeria

Background: Sickle cell anaemia is a multi-systemic disease with variable clinical manifestations including those involving the digestive system. There is paucity of data on the digestive system complications of sickle cell anaemia in children in our setting.Objective: To determine the pattern of digestive system complications among hospitalized children with sickle cell anaemia in University of Nigeria Teaching Hospital, Ituku-Ozalla, Enugu, Nigeria.Methodology: A 7-year retrospective observational study of cases of digestive system complications among hospitalized children with sickle cell anaemia was carried out. Relevant clinical data including socio-demographic characteristics, digestive system complications diagnosed, definitive investigations applied, treatment given and possible outcomes were extracted from the case record files of selected cases using a semi-structured questionnaire. Data were analyzed using SPSS version 21.0 (IBM Corp, Armonk, NY 2012) while the level of statistical significance was set at p<0.05.Results: There were 350 children with sickle cell anaemia attending the sickle cell clinic out of which 33 had serious digestive system complications requiring hospitalizations during the period under review. Their mean age was 9.1±4.8years (9months to 18years).Nearly half, 16(48.5%) of the affected children were of low socio-economic background. Acute abdominal crisis, which was found in 12(36.4%) of cases was the most common complication, while cholelithiasis was the least common complication, occurring in one (3.3%) of the cases studied.Conclusion: Acute abdominal crisis is the most common digestive system complication in children with sickle cell anaemia in our setting. Efforts should be made to exclude other potential causes of acute abdomen which may require surgical intervention in children with sickle cell anaemia. History taking, diligent physical examination and relevant laboratory and imaging studies, would readily facilitate the diagnosis, and save lives.Keywords: Acute abdominal crisis, children, haemoglobin, hospitalization, multi-systemi