The spectral methods offer very high spatial resolution for a wide range of nonlinear wave equations, so, for the best computational efficiency, it should be desirable to use also high order methods in time but without very strict restrictions on the step size by reason of numerical stability. In this paper we study the exponential time differencing fourthorder Runge–Kutta (ETDRK4) method; this scheme was derived by Cox and Matthews in [S.M. Cox, P.C. Matthews, Exponential time differencing for stiff systems, J. Comp. Phys. 176 (2002) 430–455] and was modified by Kassam and Trefethen in [A. Kassam, L.N. Trefethen, Fourth-order time stepping for stiff PDEs, SIAM J. Sci. Comp. 26 (2005) 1214–1233]. We compute its amplification factor and plot its stability region, which gives us an explanation of its good behavior for dissipative and dispersive problems. We apply this method to the Kuramoto-Sivashinsky Equation obtaining excellent results.

In this paper I presented a numerical technique for solving Kuramoto-Sivashinsky equation, based on spectral Fourier methods. This equation describes reaction diffusion problems, and the dynamics of viscous-fuid films flowing along walls. After we wrote the equation in Furie space, we get a system. In this case, the exponential time differencing methods integrate the system much more accurately than other methods since the exponential time differencing methods assume in their derivation that the solution varies slowly in time. When evaluating the coefficients of the exponential time differencing and the exponential time differencing Runge Kutta methods via the”Cauchy integral”. All computational work is done with Matlab package.

The purpose of the study was to find the relationshipbetween psychological contract violation, psychologicalcontract violation management and Organizational citizenshipbehaviours. The research was carried out in selectedcommercial banks in Kampala District. The researcher used asimple random sampling (lottery) approach to select a sampleof 144 respondents. Self-administered questionnaires wereadministered; data collected and analyzed using SPSSsoftware version 19 adopted for windows. The resultsindicated that there is a significant relationship between thestudy variables {(Psychological contract violation and OCB, r=-.37, ρ ≤ .01); (Psychological contract violation management and OCB; r = 0.48, p ≤ .01)}. The researcher concluded thatwhenever employees perceive a psychological contractviolation, the organisation is likely to suffer seriousconsequences. Employees begin to engage in undesirablebehaviours. The researcher recommended that employersshould ensure that the promised obligations to the employeesare fulfilled and not violated. This will enable employees gain asense of belonging in the organisation and go an extra mile tomake sure that the set goals and objectives are achieved. Theresearcher suggested further study on the same variables tobe carried out in other organizations and a comparative studycarried out with a larger sample size in the Ugandan bankingindustry.

Since the beginning of human history, mankind has been asking a very simple question, “what is mind?. As humans developed in the path of science and philosophy, this question became more and more complex with thousands of other doubts and confusions emerging from it. Back in the days, when humanity had just discovered fire, if somebody behaved unnaturally or crazy, collective ignorance defined it as some supernatural possession. Even today, to our utter, disgrace, this ignorance runs in the profound and remote veins of many civilizations. But, thinkers throughout history dared to ask questions to unfold these mysteries of human behavior. Freud and Breur took a step further in the clandestine arena of human mind, by finding out jewels of facts behind Hysteria. Following the footsteps of Freud, another man named C.G. Jung, made us more aware about the truth behind the most subtle acts of human psychology. On the pillars of all these rising knowledge, modern neurology became far more delicate and sophisticated, shedding light over different dark regions of the brain. Now, we know that there’s no supernatural impact upon abnormal human behavior or instability of mind. If there’s anything closely real and scientific to the term “supernatural”, it is “natural impact”, for nature makes a huge impact on the mind and molecules of every living being. This phenomenon becomes more evident when there occurs a geomagnetic disturbance on planet earth. There have been reports of an increased frequency of seizures in epileptic patients during geomagnetic disturbances. Since the dawn of mankind, the geomagnetic fields have been interacting with each brain on mother earth, thus making it vulnerable and sensitive to different kinds of electromagnetic radiation. This gives us an evolutionary advantage in developing a cure for the cruel and sometimes clandestine diseases of human mind or the entire Nervous System. Utilizing the basic electromagnetic link between the charact

Military Aviation is an inherently stressful occupationand it demands a high level of physical endurance and mentalstamina. The personnel selection for safety-sensitive jobs suchas air traffic controllers is a crucial task. Choosing the wrongperson for this job can have visibly disastrous results. Theobjective of this study is to develop and validate a non– cognitive test for selection of the air traffic controllers. APersonality Based Job Analysis was conducted on 87AirTraffic Controllers, representing different seniority and rankswhich revealed high ratings for Adjustment, Prudence,Ambition, leadership and openness to experience. On thebasis of job analysis 200 non cognitive items were developed.The initial 200 items were subjected to 10 Subject MatterExperts (SME) which resulted in 100 items and wasadministered to 902 military aspirant candidates. Item Analysisand Factor Analysis resulted in the 20 items with four extractedfactors namely Social Potency, Prudence, Sensitivity andExtraversion. The final non–cognitive test displayed goodinternal consistency and validity. Convergent and discriminantvalidity of the measure was established through comparisonwith other personality measures. The psychometric property ofthe non–cognitive test indicates that it is a reliable and validmeasure to be used for an evaluation of Job specificpersonality for the selection of Air Traffic Controllers.

Sophisticated customer demands and advanced technology have changed the way of conducting business. Financial condition of a manufacturing company largely depends on the defect rate of a product. Understanding the key features, obstacles, and shortcomings of the six sigma method allows organizations to better support their strategic directions, and increasing needs for coaching, mentoring, and training. The objectives of this paper are to study and evaluate processes of the case organization, to find out the current sigma level and finally to improve the existing Sigma level through decreasing defects. According to objectives, current sigma level has been calculated, manufacturing process analyzed and suggestions given for improvement. Especially in analyzing phase different analysis tools like Production Layout, Process Block Diagram, Cause and Effect Diagram, Cheek Sheet, Process control chart are used. FMEA is used as improvement tool. By using this it has been possible to improve productivity by reducing defects rate. This research work has been carried out in a cement manufacturing company to show how to implement Six- Sigma in this type of industry. This research related work does not only apply to cement manufacturing company but also in any other types of organizations. By implementing Six-Sigma a perfect synchronization among cost, quality, production time and control time can be achieved.

A hybrid power system consisting of PV-arrays and wind turbines with energy storing devices (battery bank) and power electronic device was designed and constructed in this paper. The system is aimed at the production and utilization of the electrical energy coming from more than one source, provided that at least one of them is renewable. The efficiency of the designed power electronic device is about 95% and 73% for capacitive and resistive loads respectively. A hybrid power system consisting of PV-arrays and wind turbines with energy storing devices (battery bank) and power electronic device was designed and constructed in this paper. The system is aimed at the production and utilization of the electrical energy coming from more than one source, provided that at least one of them is renewable. The efficiency of the designed power electronic device is about 95% and 73% for capacitive and resistive loads respectively. The integration of the hybrid is to electrify a residential house and its surrounding in order to reduce the need for fossil fuel leading to an increase in the sustainability of the power supply. This approachis techno-economically viable for rural electrification.

The purpose of this study is to look at instilling discipline in learners after corporal punishment was abolished in schools in Uganda. We approached the study by identifying the alternatives to corporal punishment and the attitudes of educational stakeholders (learners, teachers and parents) towards disciplinary management alternatives. Data were collected through questionnaires, interviews and observation using two neighbouring schools in Masaka Municipality. A qualitative research approach was used in the study. Findings reveal that there are several alternatives to corporal punishment and that educational stakeholders hold different views about these alternatives to corporal punishment. The study recommends that alternatives such as manual labour, professional support such as counseling and guidance and small class sizes should be employed as alternatives to corporal punishment.

The phenomenal growth of remittances in recent times has caught the attention of governments particularly in the developing countries, international organizations, Non- Governmental Organizations (NGOs) and the private sector, due to its importance as a viable source of external financing. The main problem identified in transferring these monies is that the competitive environment for money transfers in Nigeria is highly constrained. This is due to a near-monopolistic hold on the market by one money transfer organization (MTO) and the fact that banks are the only entities legally authorized to perform international payments. Findings from the policy analysis matrix results shows divergence in the revenue, costs and profits were negative (-2989360,-172074, -268246, - 2549040). This indicates that the society value remittances more than the market. The PCR was negative which shows that the system is not competitive and a negative SRP shows a tax on inbound transfer. The study concluded that money transfer service as rendered by banks and their partners in Nigeria is not competitive. Governments and policy makers can contribute to improving competition, lowering transaction costs, and reducing informality.

The continuous monitoring of radon concentrations is a useful method to study the effects of ventilation on radon concentration levels. The determination of average radon concentration is preferable than the active-type. For this purpose a model chamber, of cubic shape, made of plexy glass with a volume of 0.65 m3, is constructed For this purpose, two devices RDA - 200 and TRI - MET 372 are used for active-type. Devices RGM l/l and CRM- 1027 are used for continuous monitoring. The experiments are carried out at two different environmental conditions, one by using high temperature (40oC) and relative humidity (100%), the other by using low temperature (16oC) and low relative humidity (50%). Radon calibration chamber is a good tool in testing for radon measurements to different devices and techniques, a 65m3 plexy glass chamber is constructed to compare different detecting devices with the change of environmental conditions (temperature – relative humidity – samples concentration) as well as the use of devices inside or outside the chamber. This chamber resemble to a great extend the mines atmosphere which help in using it as a pilot plant. The obtained results show that: Lower stability of measurements with the change in environmental conditions, more stability for the RDA - 200 and Tri - met devices at high temperature and high humidity. From the other hand a more stability for both RGM and CRM devices clearly appeared at low temperature and low humidity conditions. This may be attributed to that the measurements depend mainly on an electronic circuit which have a higher performance at these environmental conditions.