Field Oriented Control Applied to Permanent Magnet Synchronous Machine

Field Oriented Control Applied to Permanent Magnet Synchronous Machine

ABSTRACT
The thesis deals with the detailed modeling of a permanent magnet synchronous motor drive system in Simulink. Field oriented control is used for the operation of the drive. The simulation includes all realistic components of the system. This enables the calculation of currents, voltages, torque and speed in different parts of the inverter and motor under transient and steady conditions. The losses in different parts are calculated, facilitating the design of the inverter. A closed loop control system with a Proportional Integral (PI) controller in the speed loop has been designed to operate in constant torque and flux weakening regions. Implementation has been done in Simulink. A comparative study of hysteresis and Pulse Width Modulation (PWM) control schemes associated with current controllers has been made in terms of harmonic spectrum and total harmonic distortion. Simulation results are given for two speeds of operation, one below rated and another above rated speed.

Design and Implementation of Magnetic levitation Train System

Design and Implementation of Magnetic levitation Train System 

CHAPTER ONE INTRODUCTION

    Background to the study

Overcoming the grip of the earth’s gravity has been a major challenge for years. However, the work of scientists and engineers who have found many ways to levitate a variety of objects is being applied in the field of transportation in several countries.
A long with the increase of population and expansion in living zones, automobiles and air services cannot afford mass transit anyone. Accordingly, demands for innovative means of public transportation have increased. In order to appropriately serve the public, such a new-generation transportation system must meet certain requirements.
Maglev (derived from magnetic levitation) uses magnetic levitation to propel vehicles. With maglev, a vehicle is levitated a short distance away from a “guide way” using magnets to create both lift and thrust. High-speed maglev trains promise dramatic improvement for human travel.
The Magnetic Levitation (Maglev) train is one of the best candidates to satisfy: rapidity, reliability and safety. While conventional train drives forward by using friction between wheels and rails, the maglev train replaces wheels by electromagnets and levitates on the guide way, producing propulsion force electromechanically, without any contacts.
The Maglev train looks to be very promising solution for the near future, many researchers have developed technologies such as modeling and analysis of linear electric machinery superconductivity, permanent magnets.

Problem Statement

 
The Wheel-on-rail systems suffers from numerous problems mostly is caused by the friction because of the weight that the train applies to the rail which cause loss in energy. The wheel-on-rail systems can’t reach high speeds. The wheel-on-rail systems are environmentally unfriendly; it can be represented as the conventional train.
Conventional train drives forward by using friction between wheels and rails. This friction causes many problems such as noise, vibration, reduces acceleration and needs periodical maintenance.
The maglev train replaces wheels by electromagnets and levitates on the guide way, producing propulsion force electromechanically without any contact.

   Objectives

The main objective of this study is to:

  • Design a magnetic levitating system
  • Build a maglev train model

   Methodology

  • To study the mechanism of the magnetic fields and the relationship between the levitation/movement and the
  • Build a levitating moving ‘maglev’ train model
  • Designing and modeling a levitation system

   Project lay-out

The project consists of five chapters: Chapter One presents an introduction to the principles of the project, project motivation and objectives. Chapter Two consists of theoretical background of automatic control, magnetic levitation, magnetic levitation train, microcontroller system, PID controller, nonlinear systems, linearization of nonlinear systems, transistor and freewheeling diode. Chapter Three concerns with system description, system hardware and software and modeling. Chapter Four presents the simulation and result , the system fabrication , the system control circuit implementation, the prototype design and the testing. Finally, Chapter Five presents a conclusion and recommendations for future works.

TABLE OF CONTENTS

 

  Page
No.
 
 
I
DEDICATION Ii
ACKNOWLEDGEMENT iii
ABSTRACT Iv
المستخلص V
TABLE OF CONTENTS vi
LIST OF FIGURES Ix
LIST OF ABBREVIATIONS xi
LIST OF SYMBOLS xii
CHAPTER ONE
INTRODUCTION
 
1.1 General concepts 1
1.2 Problem Statement 2
1.3 Objectives 2
1.4 Methodology 2
1.5 project layout 3
CHAPTER TWO
THEORETICAL REVIEW
 
BACKGROUND
 
and
 
LITERATURE
 
2.1 control system 4
2.2 Magnetic Levitation 10
2.3 Magnetic Levitation Train 11
2.4 Motors 15

 

2.5 Sensors 15
2.6 Microcontroller 15
2.7 Proportional Integral Derivative controller 18
2.8 Nonlinear System 19
2.9 Linearization of Nonlinear Systems 19
2.10 Transistor 20
2.11 Freewheeling diode 20
CHAPTER THREE
MODELING AND DESIGNING
 
3.1 System Description 23
3.2 System Hardware 23
3.3 System Software 32
3.4 Modeling 33
CHAPTER FOUR
SIMULATION AND RESULTS
 
4.1 Simulation and result 37
4.2 Design of PD controller 38
4.3 System fabrication 40
4.4 Rail and trailer 40
4.5 Magnetic levitation 42
CHAPTER FIVE
CONCLUSION AND RECOMMENDATIONS
 
5.1 Conclusion 46
5.2 Recommendations 46
REFERENCES 47

 

APPENDIX A 48
APPENDIX B 50

 

PREVALENCE AND PREVENTION OF SUICIDAL BEHAVIOURS AMONG UNDERGRADUATES OF UNIVERSITIES

PREVALENCE AND PREVENTION OF SUICIDAL BEHAVIOURS AMONG
UNDERGRADUATES OF UNIVERSITIES

Abstract The study was carried out to determine the prevalence and prevention of suicidal behaviours among undergraduates of universities in South Eastern States of Nigeria from 1999-2008. Descriptive survey research design was utilized for the study. Five objectives with five corresponding research questions and two hypotheses were formulated to give direction to the search for information. The instrument for data collection was documented records and a researcher-constructed questionnaire. The co-efficient of homogeneity of the instrument was established through a split-half method using thirty (30) students from Imo State University, Owerri, Imo State. The data collected from the split-half method were analysed and the coefficient of homogeneity (r) of .67 was obtained. The sample for the study consisted of 891 undergraduates of universities drawn through the multi-stage sampling procedures from a population of 17,825 undergraduates using means, percentages, t-test and analysis of variance (ANOVA). The findings of the study were summarised thus: there was very low prevalence of completed suicide in 1999-2000 (27.47%); in 2001-2002 (23.07%); in 2003-2004 (19.80%); in 2005-2006 (15.48%); and in 2007-2008 (13.18%). There was very low prevalence of suicidal attempts in 1999-2000 (27.21%); in 2001-2002 (23.53%); in 2003-2004 (18.38%); in 2005-2006 (16.91%); and in 2007-2008 (13.97%). There was a low prevalence of suicidal ideation among the students studied ( x = 1.47;SD= 0.62). There was also a low prevalence of indirect selfdestructive behaviours among the undergraduates studied ( x = 1.47; SD=0.59). Preventive measures against suicidal behaviours included: seminars for students at risk of drug abuse and possession of lethal weapons (71.10%); ban on the use of lethal weapons in the university (66.7%); and dismissal from the university of students found with dangerous weapons (61.30%). There was no significant influence of gender on the prevalence of suicidal behaviours (tcal,=.38< .05) among the undergraduates of universities in South Eastern States of Nigeria; and students year of study had no significant influence on suicidal behaviours (F-cal, = 0.28 < F – crit, 2.38; p
<.05) among undergraduates of universities in South Eastern States of Nigeria. It was recommended that since suicide is a social health problem, research should be conducted in Nigeria on the causes of suicidal behaviours. This will help in formulating a blue print for preventive intervention strategies and service delivery in Nigeria. There should be the teaching of suicide education and prevention in schools and colleges in Nigeria. For this to be meaningful, suicide education should be capable of loading its contents with topics such as signs, myths and facts about suicide, factors associated with suicide and the possible ways of helping the suicidal persons; among other recommendations. Finally, the implications of the study were proffered. >

Design and Implementation of Children Tracking System using ARM7 on Android Mobile Terminals

Design and Implementation of Children Tracking System using ARM7 on Android Mobile Terminals

Abstract: Recently, all over the world, crime against children is increasing at higher rates and it is high time to offer safety
support system for the children going to schools. This paper focuses on implementing children tracking system for every child
attending school. However the existing systems are not powerful enough to prevent the crime against children since these
systems give information about the children group and not about each child resulting in low assurance about their child safety to
parents and also does not concentrate on sensing the cry of the child and intimating the same to its parents. The proposed system
includes a child module and two receiver modules for getting the information about the missed child on periodical basis. The
child module includes ARM7 microcontroller (lpc 2378), Global positioning system (GPS), Global system for mobile
communication (GSM), Voice playback circuit and the receiver module includes Android mobile device in parent’s hand and the
other as monitoring database in control room of the school. Finally, implementation results for the proposed system are provided
in this paper.

SIMULATION OF TRACKING SYSTEM FOR SCHOOL CHILDREN

ABSTRACT
Nowadays the world faces security obstacles, the data can be accessed or penetrate easily. Thus we need to ensure the safety of our school children in the North east zone through data monitoring in form of chip. One of trajectories that need data acquisition and collection is tracking system. In this project, the scope of work is to design and implement a real time tracker embedded in the school uniform of school children and Android application (ready-made) installed in a remote device or in centralized server to monitor the movements and location of the kids. The system is contains two separated devices, one is (Linkit-One) which is connected with GSM/GPRS and GPS antennas and the other is a mobile phone operated by Android 4.4 OS or greater. During motion/stop its location update can be continuously reported using GPRS service and server. This information will be plotted using Google maps on the monitoring device/server. The system had been implemented and tested. All the results had been achieved and recorded for future work. This thesis achieved monitoring of location, speed in pre-defined area and option of getting out the zones under specific condition

CHAPTER ONE/INTRODUCTION

Background to the study

Tracking system is very important in modern world; this can be useful in navigation, monitoring, tracking of the terrorist groups.These days, however, with technology growing at a fast pace, automated tracking system is being used in a variety of ways to track and display locations human beings and non object in real-time . A school children tracking system that uses GPS/GSM/GPRS technology and a Smartphone application provide a better service and cost effective solution in the fight against insurgency in the North East.
The present study is on the design and development of a school children tracking and monitoring. The system principally monitors school children movement such as position, and speed.
The ability to accurately detect a children’s location and its status is the main goal of automobile trajectory monitoring systems hence this project.

 Statement of the problem

This school children tracking system faces heavily  the Global Positioning System (GPS). This is because it is easy to use, accurate and reliable. However, GPS signals can be compromised by both natural and human sources. If that happens it can lead to inaccurate data or complete loss of GPS signal. In some locations, the availability and quality of GPS signals can cause issues. Errors can also be expected when the chip signals hit structures as a result of the children’s playing.

 Aim and Objectives:

The aim of this project is to design and implement of school children tracking system
The objectives of this project are:

  • To get the real time school children tracker through smart
  • To provide the interfaces with the peripherals to collect the data (location and speed) and implement data communications to send that data to the MCS.
  • To view the data collected on the School children tracker by using the MCS app on an Android

TRACKING SYSTEM FOR SCHOOL CHILDREN IN NORTH EAST

  Methodology:

The GPS Module will be used to receive the coordinates of the children from the satellites among other critical information, and then send location and speed to the LinkIt-ONE board. The speed will be calculated using GPS from coordinates of two points. The Link-It ONE development board will be used to process the received data from the GPS module and send the information to the GSM modem. The GSM/GPRS module or Wi-Fi antenna will be used to transmit the updated device database to the server, and the user access the database using MCS application on the smart phone. The Android application (MCS) on smart phone will provide the exact location and speed of target.

Organization of the Study

Chapter Two is a theoretical background and related works in a field of school children tracking system using android.
Chapter Three describes steps of hardware design the school children tracker and how to view it in a software application.
Chapter Four discusses the results of simulation and implementation for the project.
Chapter Five explain the conclusion and the future ideas that can be performed.

Pornography addiction as a cause for high rate of depression among youths

Abstract
Cross-sectional evidence suggests that pornography use is related to lower mental well-being among adolescents but it remains unclear if changes in well-being are related to the dynamics of pornography use within this population. We examined the relationship between pornography use, subjective well-being, symptoms of depressions and anxiety, and self-esteem in two independent panel samples (N = 455; N = 858) of Croatian adolescents using cross-lagged path analysis and lagged linear mixed models. After controlling for impulsiveness and family environment—factors that are unlikely to be influenced by pornography use—earlier levels of pornography use were not significantly associated with subsequent decreases in subjective well-being across gender and panel. However, pornography use was associated with increases in both self-esteem and symptoms of depression and anxiety, albeit only among adolescent women in one of the two panels. In addition, low subjective well-being was associated with a subsequent increase in pornography use, but only in female adolescents in one panel. This study’s results are not consistent with concerns about pornography use negatively contributing to male adolescents’ psychological well-being, but suggest potential antagonistic links between pornography use and specific facets of mental well-being in adolescent women. Such links should be considered tentative until verified with further research.

The rate of pornography addiction as a cause for high rate of depression among the Nigerian youths.

COVERAGE OF TIV/FULANI CONFLICT: A STUDY OF DAILY TRUST AND VANGUARD NEWSPAPERS

COVERAGE OF TIV/FULANI CONFLICT: A STUDY OF DAILY TRUST AND VANGUARD NEWSPAPERS (MARCH 2014- MARCH 2015

ABSTRACT

One of the most serious problems facing Nigeria as a country today is the high incidence of the Tiv/Fulani conflict. The conflict has become so rampant that no day passes without an incident of conflict reported in the national newspapers in one part of the country or the other. Thus, it seems that the audacity of the perpetrators increases daily as more lives are lost and properties destroyed. This situation further aggravates other social problems including fear, anxiety and the feeling of general insecurity which limits the effectiveness of national development. What then is the role of the print media in resolving the conflict in order to bring about peace and sustainable development to a growing economy like Nigeria? The aim of this research is to explore ways through which the media, particularly the print media can better deploy effective communication towards conflict resolution. The major objectives are to ascertain how newspapers report the Tiv/Fulani conflict and to examine how these reports have resolved or negatively affected the resolution of the conflict. The researcher interviewed the reporters of both newspapers, which revealed that all newspapers under study see their report as balanced and objective but this was disputed by the Focus Group Discussion, and the analysis of Daily Trust and Vanguard newspapers from March 2014 to March 2015 using their character, word, theme and space, where some reports were seen to favour one party against the other and this has caused death, hatred among members of the community. Others variables include news stories, features, editorials, cartoons and pictures. The social responsibility theory and framing theory were used to underpin this study. The findings of this study reveal that some of the differences in the perspective of the Tiv/Fulani conflict are affected by ideological leanings, sectional loyalties, biases, interest and misinterpretation which have negative effect on the people like hatred and social unrest which eventually leads to poor development. The amount of coverage given to the conflict situation is often determined by the location and ownership of these newspapers. The study recommends that engagement with the people and ethical practices are imperative in order to avoid misinterpretation and wrong framing of headlines and inside stories.

CHAPTER ONE/Background to the Study 

The Nigeria press has been a vehicle in the sustenance of national issues and a medium of conflict resolution, but none has made this role more decisive than the presentation of conflict. This is because Nigeria is a country divided by religion, and ethnicity, several violent pogroms have over the years been attempted on the two halves, violence and conflict have been reoccurring in the history of Nigeria to such an extent that looking back in history it is hard to see a time Nigeria was not going through one violent agitator or one several dimension from a secessionist movement (Mustapha, 2004).
The media undoubtedly have a major role to play in conflict resolution. This is because individuals, groups and communities usually have cause to disagree on one issue or the other. Except the conflict is quickly resolved, it may degenerate into major crisis requiring peaceful resolution,(Lekan, 2013).This research is against the backdrop that conflict will always occur and it is the responsibility of the press to report or cover them. But the way in which the Nigerian media, especially the print media report conflict and other related issues of national importance isof great concern to many Nigerians.

NIGERIAN NEWSPAPER FRAMING ON FULANI HERDSMEN

Nigeria is a country characterized by diverse ethnic groups that are scattered in the six geo-political zones of the country. However, these six geo- political zones are often broadly categorized under south and north. Given the peculiarity of these regions especially in terms of cultural and religious affiliations, most print media emerging from these regions tend to reflect, propagate and uphold values that are cherished in their respective regions, hence, the differences noticeable in newspapers reportage.
The Arewa Consultative Forum (ACF) for instance, is the leading ethno-regional organization of the elite of the former Northern Region (Arewa, 2001a; 2001b). The ethno- regional organization of the South West of Nigeria and the South-South also exist. Some are of the view that other ethno-regional groupings were drawn into the claims and counter-claims of ethnic domination and marginalization (Afenifere, 2001; Jacomb, 2001). These relatively recent developments only confirm the fact that ‗inter-ethnic rivalry for domination‘ is a ‗fatal affliction‘ of the Nigerian media process,(Afigbo,1989: 4). In other words, inNigeria, the north and the south produce newspapers, and sometimes, the reportage is geared towards ideological bias. Therefore the research considered the Daily Trust from the Northern part and Vanguard from the Lagos Ibadan axes. Both papers are widely spread across the country and are known for their vast reportage.In 1998 when the Media Trust Nigeria Ltd, the now publishers of Daily Trust, Weekly Trust, Sunday Trust and Aminiya made its debut on the streets, most Northerners were glad and proud that a media that would truly stand the test of time and say the truth to protect the Northern interest had arrived. These initial jubilations were occasioned by the sordid experience the Northern region had had with the Lagos-Ibadan axis press as a result of their imbalance in their objective coverage of events in the Northern part of the country (Saka1998).
WhereasVanguard Media limited, publishers of Vanguard Newspapers was established in 1984 by Mr. Sam Amuka (a renowned, veteran journalist and columnist of the Sad Sam Fame. Sam Amuka was editor of Sunday Times and the First Managing Director of the Punch Newspaper.) He is from Itsekiri land in the present Delta State of Nigeria his maiden copy ofVanguardhit the newsstands as a weekly on Sunday June 3rd, 1984 with the motto: Towards a better life for the People. It went everywhere on July 15, 1984. It aims to serve the people through unflinching commitment to free enterprise, the rule of law and good governance. It represents the Southern part of Nigeria
The mass media are the hub of societal sensitization and may be one of the strongestsources of influence and change.Media, especially the main stream media, is amodern means of passing across information to a large,diverse, and anonymous audience. The mass media include, (Radio, Television and the Internet), electronic and print media comprising newspapers, magazine and periodicals, other variables include bill boards, hand bills, posters, books.Mohammed (2006:27) went further to include compact disk (CDs) digital video disc (DVDS) film new agencies books, comics etc. as subset of the mass media.
The media just like any other concept has numerous definitions by various scholars of Mass Communication. Bittner (1995:30) refers to media as the collective means of communication by which the general public or populace is kept informed about the day to day happening in the society. A check into the concept of mass media reveals a combination of two words ‗mass‘ which is a large number or collection of unidentified people. According to McQuail (2005:43), the term ‗mass‘ connotes strength and solidarity of ordinary people when organized for collective purpose, and media means ‗organs or channels‘. Hence, mass media is a collection of organs of communication and information dissemination that reach out to a large number of people. The information circulation is not only confined to the public, but the media also serves to coordinate the information flow through government and the people and vice versa. Note that the word press in some usage connotes both categories of the media, the print and broadcast, especially the print.
 
The prime function of the press in general and the newspaper in particular is to, educate, persuade, mobilize and inform a literate audience, bringing them abreast with events of the time. Klapper (1960:34) noted that ―the media is the fourth estate of the realm and it is assigned the responsibility of information, education,enlightenment and entertainment of the general public‖. For  Thomas  Jefferson,  a  one-time  American‘s  president―the  media  is  the  best  instrument  for enlightening the mind of man and presenting him as rational and social being‖. This perhaps explains the role that the media can play in conflict resolution like the Tiv/Fulani Crisis in Benue state of Nigeria. Gujbawu and Kur (2010: 45), say ‗the way and manner conflict is reported by the press may accentuate or attenuate their severity and frequency‘.
In Nigeria, the Fulani have continued to clash with sedentary farming communities in Plateau, Taraba, Ogun, Oyo, Sokoto, Nassarawa, Benue, Rivers, Bauchi, Yobe, Enugu, Cross Rivers states and the Federal Capital Territory. The war being fought with the Tiv is fought in Tiv territories of Benue and Nassarawa state, where the Tiv have lived in the last three centuries, farming; rice, yams, cassava, beniseed, soya beans, and keeping their own cattle, the Muturu cows. Benue State and Tivland is said to be Nigeria‘s bread basket, with the popular slogan as;
―food basket of the nation‖.   The following communities in Benue state have been reported to have been facing the Tiv/Fulani crisis. Nyiev, TseAnda,Yandev,Dooga, Kpata, Lokobi, Mbagwen, TseZaki, TseKper, Chile, TseKpoku, Sengev, Gbuku and TseYaji. etc.(Tor, Bar and Ene2014).
Any human community needs peace so that the people can realize both individual and collective goals. It is a well-known fact that most conflicts such as ethnic religious violence, inter-communal clashes and herdsmen and farmers imbroglio usually lead to loss of human lives and destruction of properties. More so, the atmosphere that usually trails such occurrences is that of uncertainty, fear and looming danger of reprisal attacks. Therefore, in the quest for sustainable development, peace and harmony are non-negotiable factors. Unfortunately, Benue state, which has earned a reputation for been the food basket of the nation, has in recent years, being confronted by different waves of conflicts: chief among them is the incessant clashes between herdsmen and farmers.
The resultant effect of this conflict is that some farmers have abandoned their farmlands which consequently lead to low food production. Also, the productions of cow milk and meat by the herdsmen have also been grossly affected because many cows have been killed. More so, women have also been killed and widowed and children orphaned as a result of this conflict.
With this grim situation at hand, there is need for all hands to be on deck in order to find a lasting solution to this conflict. The idea of national unity and peaceful co-existence needs to  be promoted by the media and other related institutions. This is because the press is regarded as the watch dog of the society (Okpoko, 2007: 153). The modern function of the press includes but not limited to, surveillance, correlation, agenda setting, shaping public perception and influencing public policy. After the press has set an agenda and raised the public perception on an issue,these opinions tend to shape some government policies. However, the press in Nigeria seems to bedivided on the way forward.A section of newspapers are directly or by inference agitating for strong military action against Tiv/Fulani Crisis because in some cases of the attack, some soldiers are killed in the process. According to Tor, Bar and Ene, (2014).
After months of tip-toeing around the subject, the Nigerian media reported that from the 8-10th February 2011, armed Fulani herdsmen numbering between 200-500 sacked three districts in Gwer West local government, unleashing an orgy of violence and killing for two days that left scores dead and rendered 20,000 people homeless. The damage to property according to the media was over a hundred million naira. Other versions claimed that the Fulani and mercenaries  had  more  sophisticated  assault  weapons  than  the  police.  The
Nation Newspaper of Jan 2014”, for instance reported that the operation was
―similar to the invasion of Borno state by members of Boko Haram‖.
Furthermore,even as Nigerians continue to condemn the alleged attack on the convoy of the then governor of Benue State, Gabriel Suswam, by Fulani herdsmen, the associations representing the herdsmen have come out to point fingers at the then state governor himself.Speaking through their umbrella body, Miyetti Allah, Cattle Breeders Association, the herdsmen said that,―Suswam is the architect of the Tiv/Fulani crisis, not just in Benue State, but also in Plateau and Taraba states as well‖. They alleged that he has stoked the hostilities against them.The herdsmen claimed that in just three months of the crisis, they had lost 134 of their colleagues and 11,915 cattle to the clashes in the state.
The National Vice-President of the cattle breeders association, Alhaji Hussaini Bosso, told journalists in Minna, Niger State, that their problem in Benue State started when Suswam publicly announced that he did not want them in the state. They said that his statement led to the massacre of their members in the state. Bosso said in Benue, they lost 82 herdsmen and 6700 cattle; in Plateau, they lost 43 herdsmen and 4682 cattle; and in Taraba, they lost nine men and 533 cattle. Bosso claimed that the killings in Benue and Taraba states were carried out by the Tiv;  while  the  Beromo  were  responsible  in  Plateau  State.  He  said,  ―All  these  atrocities  were perpetrated by Tiv people‖. According to him, to our surprise, the police were aware, but did not do anything to avert the ugly developments. Not only that, the Police felt unconcerned about the matter, the respective governments of the affected states did nothing. Bosso appealed to the government of the state, to as a matter of urgency, bring to an end to the killing of innocent Fulani herdsmen for peace to reign. As a rider to this statement on peace: the Peace Bulletin 2005 stated aptly that:
The media both the print and the broadcast play an important role in diffusing tension, reducing and containing conflicts, it can also do so by being deeply aware of the fragility of a country‘s social fabric, of the effect being expended at unifying a country‘s polarized, religion ethicized politics and more importantly, by objectively reporting conflict incidences as they unfold. (p. 5).
Furthermore, according to Otite (2001:56), the level of prominence given to any conflict goes a long way in determining the intensity and duration of such conflict.This means that conflict that are given little prominence despite being a huge challenge for national development such as the Tiv/Fulani Crisis, will only fuel the crisis leaving the perpetrators to continue with impunity.
Conflict by its very nature tends to be attractive for the press. As Owens Ibie (2003;32) puts it ―the media are naturally attracted to conflict not just that, conflict is also hard to talk about without engaging the emotions of the discussant‖.This is largely due to the humanitarian implications, especially when conflict gets violent like the challenge of the Tiv/Fulani Crisis,presenting an objective and balance report of such activities becomes tortuous, almost an impossible task. ―The principles of reporting are put to severe test when the nation goes to war‖, Adie cited by Allan and Zelizer (2004; 3).
However despite the strict principles of journalism, ethnic, tribal and religious affiliation and sentiments may have jeopardized parts of the pillars of journalism which include balance, objectivity and fairness. Thesesentiments are so strong and widespread, that the sacredness of the in- house policies may be reduced to nothing. Often journalism is in a fix, caught between staying true to the principles of reporting and responding adequately to the realities of conflict. As Allan and Zelizer (2004: 3), aptly state ―the media is confronted with often horrific realities of conflict.Any belief that the journalist can remain distant, remain unaffected by what is happening tends to go out through the window in a hurry‖.Demonstrating the character of the press in time of crisis, Pate (2002; VI) cited by RotimeSankore (2006) that:
Nothing defines the character of the press by establishing more sharply than any crisis that pitches the nation against nation or one section of the society against another in times of conflict, the responsibility of the media is magnified through the folds of society demands for more news information and analysis, and therefore its increased capacity to influence, debate and shape public opinion. Every word written or spoken by the media is a potential machete, bullet or bomb in the mind and hand of the victims and perpetrators. This raises serious question on what should be the role of the media in time of war or conflict. The ethical moral and professional obligation is to provide the public with accurate balance reporting that does not distort or suppress information. (This Day NewspaperNov 1, 2001: 5).
Media practitioners most times tend to be biased in the reportage of conflict issues in the society. Individual differences, bribe, among other factors may be regarded as the reasons behind this. Asemah and Edegoh (2012) citing Galadima in Pate (2002) state that; ―some of the reasons why a journalist becomes bias during conflict reportage among others may be: ownership, religion, ethnicity, interest, unprofessionalism and regionalism‖.This implies that each  newspaper in its regional form tries to outsmart the other by protecting the integrity of its region, and at the same time undermining the reputation of the other. Also both sides could be ready to sacrifice the truth for propaganda and sensational coverage.
It is in this light that Anyanwu (2004), posits that, no newspaper in Nigeria be it southern or northern based affiliated is immune from deep sentimental reportage especially as it relates to the coverage of conflict,they all pervert the story to their own advantage. In analyzing the press coverage  of  conflict,  Abubakar  (2006)  says,  ―certain  issues  must  be  considered,  first  the ownership structure, in which Nigeria is pluralistic, the ownership structure of the Nigeria media exposes certain issues glaring features which explains why the media view issues differently and take certain position.Secondly, the distribution of media in Nigeria has a preponderance that favours certain section of the country‖.
The coverage of conflict in the Nigerian press tends to bechaotic, but this is not necessarily a bad thing as diversity of views of the press and vast exposure, the audience can establish the objective truth on any conflicting issue. But the policies and practices of the press infringe on some ethical principles of prominence, objectivity and balance, which journalist and the media are to uphold. According to Media World Year Book (2004), a resource guide to the Nigeria Media, ―Nigeria has 50 magazines, including newsmagazines, soft- sells and trade journals. The country has also 50 private newspaper including dailies, weeklies, and vernacular. Government owned newspapers numbering 45 while community newspapers are 44‖. Newspapers mayfollow us wherever we go, the biggest challenge for the press is how to appear responsible and win the heart and mind of the readers especially when covering issues on conflict. Thus it is not necessarily absolute objectivity that is craved for in any reportage, but the coverage that reflects the truth in terms of prominence, fairness and balance that will bring about peace and development.
The negative events of conflicts which have undermined progress in Tiv-land are universal. They are by no means only restricted in reality to the Tiv-people. Therefore, conflicts should be discouraged or avoided in allsocieties. In order to achieve this, it is imperative to foster a climate of good coverage, since conflict is attractive to the press, a common understanding would help and to bring theaggrieved parties together to negotiate for peace. Both the government and the communities have important rolesto play in this regard.

Statement of the Research Problem

Mass media have been at the centre of conflict resolutions, setting agenda towards national integration and tolerance among the diverse people of Nigeria. One of such roles of the media is coverage of issues that bother on the people‘s perception about their socio-cultural realities, the need for them to live in peace with other citizens of various backgrounds and creating endured mutual understanding among the people for their own growth and development. This is because violencehasno doubt been a hindrance to development, it leaves behind causalities, innocent people are killed, people are displaced, properties are destroyed, and crime rate is heightened. If the press as a watch dog of the society can resort to balance reportage with due regard to social responsibility, it will help in reducing the recurrence of violence to the barest minimum. Also bad framing always have negative consequences on the people, Though some literature have expressly accused the media for its involvement as source of hatred (Kurspahic, 2003) and in the emergence and escalation of conflicts (Kalyango & Vultee, 2012;Reuben, 2009), butmost of them didnot clearlyidentify howthisisdone.
However, one of the major challenges for today‘s print media is the problem of diversity in coverage of issues of security, leading to interests and misrepresentations in the coverage. Various media outfits cover conflict stories based on their operational principles or ideological leanings. More so, the content of some print media outlets have been largely influenced by regional or sectional loyalties. Consequently, this has continued to polarize the conflicting  parties thereby making it difficult to reach a sustainable reconciliation. There is therefore an urgent need to review the approaches used by these media outfits especially in the area of covering conflict situations.
It is against this backdrop that this study evaluates the coverage of the Tiv/Fulani crisis by gathering opinions, analyzingDaily Trust and Vanguard newspapers and their roles in controlling the conflict. Also, the study takes a look at the problems emanating from the coverage by the newspapers and the differences in coverage, slant of stories and prominence given to the crisis in the coverage by the two newspapers.

 Aim of the Study

The research explores ways through which print media can better deploy headlines and inside stories towards conflict resolution.

  Objectives of the Study

  1. To ascertain how Daily Trust and Vanguardnewspapersreported majorTiv/Fulani crisis from March 2014 to March 2015.
  2. To determine the dominant frames used by Daily Trust and Vanguard, in constructing those headlines/stories about the Tiv/Fulani
  3. To ascertain the extent to which newspaper report provides objective and balance information about the attacks to their
  4. To examine the extent to which media report of the conflict has enhanced or negatively affected the resolution of the

  Research Questions

The research questions are as follows;

  1. How did Daily Trust and the Vanguard newspapers report major Tiv/Fulani conflict?
  2. What are the dominant frames used by Daily Trust and Vanguardnewspaperabout theTiv/Fulani crisis?
  3. What is the level of objectivity and balance in the newspaper reportage of the crisis?
  4. What role do the print media (Daily Trust and Vanguard) play in resolving the crisis?

          Significance ofthe Study

This study evaluates the coverage of the Tiv/Fulani crisis by Daily Trust and Vanguard newspapers. It becomes necessary to carry out the study because of the need for the media to serve as tools for national integration and cohesion, geared towards peaceful co-existence among the diverse population of Nigeria, and without peace development cannot take place.Also, this study is needed due to the incessant reports of clashes between herdsmen and farmers across the country. The recommendations of this study will benefit the press, the government, conflict resolution experts, development facilitators and the body of knowledge on conflict in Nigeria.
This study will aids in policy formulation and implementation for management of security issues, national integration and crisis management. It alsoserves as a guide for prevention of future occurrence of ethnic crisis as well as a blueprint for options through which herdsmen can have grazing land. In addition, the press will benefit from this study in the area of professionalism and ethical practices, in line with the journalism code of ethics, while it also serve as a guide for reference purposes for conflict resolution experts towards peaceful resolution of ethnic crisis in Nigeria. For development facilitators, the study improves their efforts at meeting the goal of peaceful society as a support for sustainable development in Nigeria. Furthermore, the study adds to the existing body of knowledge by serving as a research base for development communication scholars, researchers and students.

 Scope of the Study

This study deals with assessing newspapers coverage of violent conflict situations, interviewing reporters and via Focus Group Discussion on its effect on some Nigerian communities. The newspapers that are considered are Daily Trust and Vanguard, both of which are national dailies and published within the period of the study, they represent north and south and they are widely in circulation. It is centered on how effective communication of the print media could bring about peace and development in some Benue state local government. The crisis to be studied is the Tiv/Fulani crisis and the period of study is from March 2014 to March 2015. This period was selected because the crisis was endemic. The study focuses on the crisis between farmers and Fulani cattle rearers in Guma, Logo and Gwer West Local Government Area becauseit‘s regardedas the worst hit areas of the state. Benue state is known to have a fertile soil for farming, and the three local governments‘ areas originated from the different rivers in the state, which are river Guma, river Logo and river Gwer West. Therefore, the availability of the fertile soil and water which has boost agriculture hasmade the state attractive to the Fulani for grazing.

 Limitation to the Study

The Tiv/ Fulani mayhem has been an issue that has lingered for several years now.AsideGuma, Logo and Gwer West local government area of Benue state, there are other several local government such as,Agatu, Otukpo, Buruku, Obi, Ukum, etc. that are affected by the herdsmen and farmers crisis. Therefore, the three local government looked at is just an aspect; we have for instance, the Agatu-Fulani crisis.The period of 13 months and the few local government areas covered in this study may not be adequate enough to know the broaderrole the print media has played in combating the menace in the local government left out by this study.

CHAPTER TWO/Review of the Related Literature

Having known that knowledge is accumulated over series of researches, it is important that every study, no matter the field must be based on the building blocks of previous researches, it  is  to  this  effect  that  Wimmer  and  Domnick  (2000)  says  ―a  researcher  who  conduct  an investigation without regards to data that have already been done is said to have failed on his research.‖ Therefore this chapter deals with documented knowledge related to the field of the Nigeria press coverage of conflict especially that of Tiv/Fulani crisis as carried out by other researchers with the attempt to adding knowledge to this fieldsof study.Furthermore two basic theories namely; social responsibility and framing theory will be used for this study.

Mathematical Modeling of Predator-Prey models: Lotka-Volterra Systems

Mathematical Modeling of Predator-Prey models: Lotka-Volterra Systems

The time dependent non-linear reaction-diffusion equation in predator–prey models in Lotka- Volterra system has been formulated and solved analytically and numerically. Analytical expressions for the prey and predator populations are derived by using the HPM. The primary result of this work is simple approximate calculations of prey and predator populations for all values of dimensionless parameter ∝ and the constant value l and m . The HPM is an extremely simple method and it is also a promising method to solve other non-linear equations. This method can be easily extended to find the solution of all other non-linear equations.

Lotka-volterra predator-pey equations model

Lotka-volterra predator-pey equations model

Mathematical modeling will always be an important field of mathematics because of its applications to the real world. While no model is perfet, if a close enough approximation can be obtained, then scientists can see how certain factors will affect a situation by merely working out equations on a piece of paper as opposed to actually running an experiment. One mathematical model that is frequently examined is the Lotka-Volterra predator-prey model. This refers to a system in which there are two populations known as the predator and the prey. The model states that the prey will grow at a certain rate but will also be eaten at a certain rate because of predators. The predators will die at a certain rate but will then grow by eating prey. In the recent decades, considerable work on the permanence, the extinction and the global asymptotic stability of autonomous or nonautonomous Lotka-Volterra type predator–prey systems have been studied extensively, for example . In addition to these, the book by Takeuchi [2010] is a good source for dynamical behavior of LotkaVolterra systems. The predator–prey problem attempts to model the relationship in the populations of different species that share the same environment where some of the species (predators) prey on the others. The prey is assumed to exhibit linear growth given by a positive parameter. Predator species consume preys with a nonlinear interaction with another set of parameters that determine the rate of competition between predators. The natural death rate of the predator is assumed to be linear and given by a negative parameter. One of the earliest implementations, the Lotka–Volterra model serves as a starting point of more advanced models in the analysis of population dynamics. Because of its unrealistic stability characteristics, stability analysis of the model and its generalizations has recently gained much attention.
Lotka-volterra predator-pey equations model
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Press coverage of Fulani herdsmen and farmers crisis 2015-2020

Press coverage of Fulani herdsmen and farmers crisis( study of two newspapers daily sun and vanguard)

Background to the Study

Nigeria, like many other countries of the world, is replete with pockets of crises and attacks in its territory. Ever since the marriage between the Northern and Southern Protectorate in 1914 which led to the birth of the entity known as Nigeria, the country has continued to bleed as a result of inter ethnic, religious, political and financial crisis. Some of the crises were the Nigerian Civil War of 1967, Kaduna Riot in year 2000, 2002 Miss World Riots, etc.
Other crises that have torn the nation apart include: the election crisis which greeted the annulment of the June 12, 1993 Presidential election by the then Military Head of State, Gen.Ibrahim Badamosi Babangida.
Another crisis is the killings by the Jama’atul Ahl-Sunnati Lil Dawa’ati wal Jihad, otherwise known as Boko Haram, which frown against western education and whose activities since 2009 have led to the death of more than thirty thousand people mostly in the North Eastern States, sacking of communities, loss of lives and properties, total anarchy and fear and kidnapping, bombing of worship centres, schools and markets and public buildings, etc.
The latest crisis is the Fulani herdsmen and host communities crisis otherwise known as farmer/ herder clash which has led to the average of two thousand deaths since 1998 and more than 904 deaths in the first four months (January 1- April 30, 2018), (The Eagle online, 2018).The problem emanates from accusation and counter accusation by herders over cattle rustling, hostility and murder of their kinsmen and their cows by the farmers and the accusation by farmers of unauthorized trespass and destruction of farmland by the herders and their cows, etc. The group is now ranked fourth most dreaded militant group globally according to a report by Global Terrorism Index (2014)
Report indicates that herdsmen killed 168 people in January of 2018 alone and about 904 people in the first four months (The Eagle online, 2018). However, since the advent of Fulani herdsmen attacks in Nigeria, newspapers has been flooded with screaming headlines; most of which have been said to be inciting, others abetting while some others could be said to be moderate.
The upsurge between herdsmen and famers in various parts of the country is a good example of conflict in the society. Conflict between herdsmen and farmers in some sensitive parts of the country has raised different issues. Conflict between farmers and nomadic cattle herders have also been a common feature of economic livelihood in West Africa, (Tori, 2000). This is becoming a serious crisis. It is now second to Boko Haram security issue in Nigeria.
Conflict and insecurity are major crisis that has existed in the country for couple of years. Insecurity is the feeling and state of uncertainty or anxiety about oneself because of lack of confidence; being open to danger or a threat and there is lack of protection. The causes of insecurity are also as numerous as the number of environmental and economic activities are factors that encourage crisis.
Historically, the Nigeria perspective of herdsmen and farmers crisis takes root from the global scope in Africa. According to Ofuoku (2010), in the period before the beginning of 20th century, such problems were mainly restricted to the savanna belts of West Africa. Cattle rearing where mainly prevalent in these belts: Guinea, Sudan and Sahel Savanna where crop production was carried out according to short raining season and small scale.
Ahmed-Gamgum (2018) aver that the current and most serious version of insecurity challenge facing Nigeria today is the instigation of farmers-herdsmen violent. The major effect of the conflicts are food and livestock shortages , food price increase, lost in revenue, and income, thousands of lives and household properties, cattle routes, demarcated grazing reserves farm land and towns infrastructures are frequently destroyed and or denied access.
Ofuoku, (2010) observed that cattle herders got the opportunity of having available farm land or grazing land to themselves. As  time went on, and with the introduction of irrigation practice in the Savanna belt of Nigeria, and during dry season when pasture wither and unavailable to cattle herders, the herds men move down site (coastal zone) were raining is longer and soil retain moisture for long, in search of pasture and water – a movement called transhumance,
However, Shehu (2017) pointed that Fulani as a tribe is known with the business of cattle rearing. Notwithstanding this fact, a number of Nigerians and even foreigners are also found in cattle rearing. Those vulnerable to herdsmen attacks seem to condemn the entire tribe of Fulani incognizant of the innocence of the majority. Fulani herdsmen have been labeled by some Nigeria’s newspapers with various frames as a result of their clash with their farmers counterparts in Nigeria. According to Shehu (2017), average Fulani-herdsman, cattle rearing are a way of living, which is reckoned with as a mark of common heritage. In effect, any threat to his herd amounts to a threat, not only to his survival but also to his common destiny. This way of thinking is encapsulated in the following citation as credited to a Fulani-nomad.
The media especially the newspaper is always keen to report and investigate crisis event in any society. The newspaper is always at the center to connect man with the environment. As important as the media to events, the media shine when there is tension, crisis and war. Issues of war come from the human angle of news value. According to Adamu (2016), the media as an institution requires an understanding of what constitutes the sector. Clearly, the mass media consist of something beyond the specific outlets that deliver news and information moving forward.
The print media over the years have been integral part of democracy in the world and in Nigeria. According to Orhewere (2003), there are many genre of print medium which include newspaper, magazine, journal, and books. Newspaper is the most common genre of the print medium people read often which reflect all important news and provides information comments and guidelines that is most useful to its readers. It fully explains the meaning of local, national and international events which are significance to its own community by providing wise counsel in its editorial and become a public conscience. According to Nwosu (2003), a newspaper is a wholesome package of news, events, people and place in a given area and published on a predetermined frequency. This shows the level of importance of newspaper to the society.
The interpretation of the above is that newspaper is a vehicle for societal development. This is done through the reflection of societal happenings and making the position of the People to known relevant authorities vise visa. According to Nwosu (2003), the contents of a newspaper must strike a balance between all interests be it political, social, and academic, sports, ethics etc. This means that newspaper contents must touch on vital issues that affect man in the national orbit.
Newspaper has been frequently used in political setting than any other sector. This assertion is equally true based on the historical development of Nigeria democracy and mass media (Sambe, 2008). Though, that era was marked by a lot of civil unrest in the country.
 
This study therefore, sought to analyze two selected newspapers in other to unravel the frequency, prominence, direction and depth of coverage of Fulani herdsmen attacks of host communities.
 

1.2 Statement of the Research Problem

The media cover events and the importance attached to such events is determined by its placements on newspapers and broadcast bulletins. Are Nigeria media given adequate coverage to herdsmen attacks on host communities? Are the stories covered in the media prominently displayed or are they tucked inside the pages of the newspapers? How frequent does news of Fulani herdsmen attacks on host communities appear in Nigeria newspapers? Is the direction of news reportage favourable, unfavourable or neutral?
This study sets out to unravel the coverage of Fulani herdsmen attacks on host communities in Nigeria as reported in the selected dailies in other to discover their pattern of coverage.

1.3 Objectives of the study

The main objective of this study is to analyze Press coverage of Fulani herdsmen and farmers crisis( study of two newspapers daily sun and vanguard)
. Specifically, the study sought to:

  1. Find out the frequency of newspaper coverage of Fulani herdsmen attacks on host communities.
  2. Find out the prominence accorded the reportage of Fulani herdsmen
  3. Ascertain the direction of newspaper coverage of Fulani herdsmen attacks on host communities.
  4. Identify the depth of newspaper coverage of Fulani herdsmen attacks on host communities.

1.4 Research Questions

 

  1. What is the level of frequency of newspaper coverage of Fulani herdsmen attacks on host communities?
  2. What is the prominence of stories of Fulani herdsmen attacks on host communities?

 

  1. What is the direction of newspaper coverage of Fulani herdsmen attacks on host communities?
  2. What is the depth of newspaper coverage of Fulani herdsmen attacks on host communities in the newspaper?

1.5 Significance of the Study

The issue of Fulani herdsmen and farmers crisis in Nigeria is becoming a great concern to everybody including government institutions, civic society and the media. Hence, the result of these findings shall benefit the followings

  • The newspaper organizations
  • Government at all levels
  • Civil Society

The newspaper organization shall benefit from the study because the result will better position the newspapers to know areas they have perform below belt and seek for new ways to improve their coverage by maintaining media professionalism.
The government on their part will use the findings to seek for possible way to quench this crisis as well as apportion social and legal rights and privileges to the parts involved in the crisis.
The civic society shall benefit from this study because the result will make them understand the federal character and unity in diversity.

1.6 Scope of the Study

The study is on Press coverage of Fulani herdsmen and farmers crisis. The scope of the study shall be limited to two notable newspapers in Nigerian. These are daily sun and vanguard newspapers.Thus, the period for this study is one year. The scope shall further focus on the prominence, nature, pattern and direction of the coverage of newspaper on Fulani/Farmer crisis in Nigeria.

1.7 Definition of Terms

Newspaper: This is a genre of the mass media that report events, people, and place in form of paper to the readers. It appears daily and circulates to all parts of the country.
Coverage: This is the type of report of newspaper report. It is also called beat or report for a particular issue.
Conflict: This is disagreement between two or more parties over an issue field. It is could be misunderstanding of ideology.
Dimension: This is the angle or nature newspaper reports crisis that relate to Fulani herds men and local farmers in Nigeria.
Prominence: This is the amount of importance given to a particular new story on the page of the newspaper. 
Nature of type of report: This is the temperament at which cover societal issues. It is also the style of coverage.
Type of report: This is the model at which newspaper report on a particular issue. It is also the mold of coverage.
Direction of Coverage: This is the course newspaper house report event on the pages of the newspaper for the people to take for resolution.