TOP DOWN NETWORK DESIGN FOR DATA INTEGRATION

ABSTRACT

The world has changed a lot in the last couple of decades. Instead of simply dealing with local or regional concerns, many businesses now have to think about global markets and logistics. Many companies have facilities spread out across the country or around the world, and there is one thing that all of them need, a way to maintain cost effective, fast, secure and reliable communications wherever their offices are. How do we ensure the safe passage of data across a shared infrastructure? The answer is to deploy a secured Virtual Private Network (VPN).

SUBSCRIPTION FRAUD DETECTION SYSTEM

ABSTRACT

This project is concerned with GSM subscription fraud detection system using artificial neural network technique. Fraud is a multi-billion problem around the globe with huge loss of revenue. Fraud can affect the credibility and performance of telecommunication companies. The most difficult problem that faces the industry is the fact that fraud is dynamic, which  means that whenever fraudsters feel that they will be detected, they device other ways to circumvent security measures. In such cases, the perpetrators intention is to completely avoid or at least reduce the charges for using the services. Subscription fraud is one of the major types of telecommunication fraud in which a customer obtain an account without intention to pay the bill. Thus at the level of a phone number, all transactions from the number will be fraudulent. In such cases abnormal usage occurs throughout the active period of the account; which is usually used for call selling or intensive self usage. This provides a means for illegal high profit business for fraudsters requiring minimal investment and relatively low risk of getting caught. A system to prevent subscription fraud in GSM telecommunications with high impact on long distance carriers is proposed to detect fraud. The system employs adaptive flexible techniques using advanced data analysis like Artificial Neural Networks (ANN). Fed with raw data, a neural network can quickly learn to pick up patterns of unusual variations that may suggest instances of fraud on a particular account. A total of 158 data samples were collected, trained and tested using a model that allows identifying potential fraudulent customers at the time of subscription. The result shows that 80% of the prediction accuracy has been obtained. From the result produced, artificial neural network has a potential to be used for detecting subscription fraud in telecommunication.

Design and implementation of staff appraisal/promotion system

CHAPTER ONE

INTRODUCTION

1.1 BACKGROUND OF STUDY

According to Thompson (2008), Promotion is the advancement of an employee’s rank or position in an organizational hierarchy system. Promotion may be an employee’s reward for good performance, i.e., positive appraisal. Before a company promotes an employee to a particular position it ensures that the person is able to handle the added responsibilities by screening the employee with interviews and tests and giving them training or on-the-job experience. A promotion can involve advancement in terms of designation, salary and benefits, and in some organizations the type of job activities may change a great deal. The opposite of a promotion is a demotion.

A promotion can involve advancement in terms of designation, salary and benefits, and in some organizations the type of job activities may change a great deal. In many companies and public service organizations, more senior positions have a different title: an analyst who is promoted becomes a “principal analyst”; an economist becomes a “senior economist”; or an associate professor becomes a “full professor”. The amount of salary increase associated with a promotion varies a great deal between industries and sectors, and depending on the what parts of the hierarchical ladder an employee is moving between. In some industries or sectors, there may be only a modest increase in salary for a promotions; in other fields, a promotion may substantially increase an employee’s salary.

The same is true with benefits and other privileges; in some industries, the promotion only changes the title and salary, and there are no additional benefits or privileges (beyond the psycho-social benefits that may accrue to the individual). In some not-for-profit organizations, the values of the organization or the tightness of funding may result in there being only modest salary increases associated with a promotion. In other industries, especially in private sector companies, a promotion to senior management may carry a number of benefits, such as stock options, a reserved parking space, a corner office with a secretary, and bonus pay for good performance. The degree to which job activities change varies between industries and sectors. In some fields, even after an employee is promoted, they continue to do similar work. For example, a policy analyst in the federal government who is promoted to the post of senior policy analyst will continue to do similar tasks such as writing briefing notes and carrying out policy research. The differences may be in the complexity of the files that the individual is assigned to or in the sensitivity of the issues that they are asked to deal with. In other fields, when an employee is promoted, their work changes substantially. For example, whereas a staff engineer in a civil engineering firm will spend their time doing engineering inspections and working with blueprints, a senior engineer may spend most of their day in meetings with senior managers and reading financial reports. In symphony orchestras, when a musician such as a violinist is promoted to the position of concertmaster, their duties change substantially. As a violin player, the individual played the music as part of the violin section. As a concertmaster, the individual plays solo parts, decides on the bowings and interpretation of the music, and leads the violins during performances. Different organizations grant the hiring and promoting managers different levels of discretion to award promotions. In some parts of the private sector, the senior management has a very high level of discretion to award promotions, and they can promote employees without going through much procedures or formalities such as testing, screening, and interviewing. In the public sector and in academia, there are usually many more checks and balances in place to prevent favoritism or bias. In many Western public service bodies, when a manager wants to promote an employee, they must follow a number of steps, such as advertising the position, accepting applications from qualified candidates, screening and interviewing candidates, and then documenting why they chose a particular candidate. In academia, a similar approach is used, with the added safeguard of including several layers of committee review of the proposed promotion using committees which include members of other faculty and experts from other universities.

In Cross River University of Technology (CRUTECH), promotion is done annually and commences in April. All department heads submits a comprehensive assessment of the teaching administrative abilities of each staff which includes result of students’ evaluation. Staffs are considered for promotion if they have spent up to about three years.

There is no computerised system which takes in the criteria for promotion in CRUTECH to determined if a staff is fit for promotion or not. All promotion documents are computed manually and pose a lot of problems when promotion is to be given to staffs. There by there is need for the development of a computerised promotion system so as to eliminate the manual promotion determination methods being presently under taken by CRUTECH.

1.2       STATEMENT OF PROBLEM

The present promotion system of Cross River University of Technology, Calabar is done by manual means, whereby a committee (promotion and appointment committee) is form to consider if a particular staff is reach or satisfied all the promotion criteria. This promotion process takes a whole lot of time in doing these, looking into the promotion criteria and secondly, they is bound to be a bias attitude of the committee to favour their own personal interest or candidate and as such, lot of partial is involve in the manual process and this is a big problem to be tackled

1.3       AIM AND OBJECTIVE OF THE STUDY

The aim is to design and develop an automated staff promotion software to accomplish the following :

1. Reduce the bias action of the promotion committee members.
2. Reduce the long process involve in the conducting interview