Exact Ordering

 Ordering is an important subject of learning; it has so many applications in day -to - day life. Hence, in this paper exact and general exact ordering methods are reviewed giving sample applications for them. Firstly, the exact ordering method is introduced and few theorems are given to assign the conditions needed to locate the position of a required object among a class of objects to be ordered in a certain manner in three classes. Secondly, the exact ordering method is generalized to any odd number of classes  In both cases and if the required object class is put in the middle of other classes, then the required object will be located exactly in the middle of all objects provided that we arrange the objects orderly in three classes in the first case and in ones in the second general case and where certain defined steps are to be followed.In general  steps are required to determine the required object exactly and where  is the odd number of classes. Making the subject more interesting, deeper, and handled in a sophisticated manner, through the introduction of exact ordering operators, is then exposed to. Finally, few different applications are suggested in physics, operational research, criminal investigation and in sorting files and postal mailing. A practical demonstration with playing cards is also mentioned

On the Numerical Solution Of Schrodinger Equation

In the beginning, we start with reviewing basic concepts such as inner product and Hilbert spaces ; then we introduce Schrodinger Equation focusing on the solution of time–dependent and time–independent  with a stress on the harmonic oscillator  problem which will be the ingredient for our subject ; namely, the numerical solution of . The numerical solution of is then tackledusing the so–called potential morphing method .Calculations were carried  out for the ground state of the  which represents the frame of reference to work with. The obtained results were compared with similar ones and found to be in very good agreement. Finally, a brief discussion related to possible future work is given ; moreover recent  works on the subject are exposed t

Evaluating e-Government Services in Kurdistan Institution for Strategic Studies and Scientific Research Using the EGOVSAT Model

Office automation is an initiative used to digitally deliver services to citizens, private and public sectors. It is used to digitally collect, store, create, and manipulate office information as a need of accomplishing basic tasks. Azya Office Automation has been implemented as a pilot project in Kurdistan Institution for Strategic Studies and Scientific Research (KISSR) since 2013. The efficiency of governance in Kurdistan Institution for Strategic Studies and Scientific Research has been improved, thanks to its implementation. The aims of this research paper is to evaluate user satisfaction of this software and identify its significant predictors using EGOVSAT Model. The user satisfaction of this model encompasses five main parts, which are utility, reliability, efficiency, customization, and flexibility. For that purpose, a detailed survey is conducted to measure the level of user satisfaction. A total of sixteen questions have distributed among forty one users of the software in KISSR. In order to evaluate the software, three measurement have been used which are reliability test, regression analysis and correlation analysis. The results indicate that the software is successful to a decent extent based on user satisfaction feedbacks obtained by using EGOVSAT Model

Numerical simulation for entrainment of forced turbulent fountains

Numerical simulations are used to investigate the entrainment for forced turbulent fountains over a range of Reynolds numbers and Froude numbers, with ranges based on the fountain source properties. Other fountain properties such as height and width are also examined to provide information on the general structure of the fountains. The results show that the fountains have minimal Reynolds number dependency, while they have a strong linear relation with the Froude number for the cases considered in this study. The entrainment coefficient is obtained as well as scaling constants for height and width in terms of the Froude number. References G. Abraham. Jets with negative buoyancy in homogeneous fluid. J. Hydraul. Res., 5(4):235–248, 1967. doi:10.1080/00221686709500209. W. D. Baines, J. S. Turner, and I. H. Campbell. Turbulent fountains in an open chamber. J. Fluid Mech., 212:557–592, 1990. doi:10.1017/S0022112090002099. L. J. Bloomfield and R. C. Kerr. A theoretical model of a turbulent fountain. J. Fluid Mech., 424:197–216, 2000. doi:10.1017/S0022112000001907. H. C. Burridge and G. R. Hunt. Entrainment by turbulent fountains. J. Fluid Mech., 790:407–418, 2016. doi:10.1017/jfm.2016.16. I. H. Campbell and J. S. Turner. Fountains in magma chambers. J. Petrol., 30(4):885–923, 1989. doi:10.1093/petrology/30.4.885. P. D. Friedman, V. D. Vadakoot, W. J. Meyer, and S. Carey. Instability threshold of a negatively buoyant fountain. Exp. Fluids, 42(5):751–759, 2007. doi:10.1007/s00348-007-0283-5. D. D. Gray and A. Giorgini. The validity of the Boussinesq approximation for liquids and gases. Int. J. Heat Mass Tran., 19(5):545–551, 1976. doi:10.1016/0017-9310(76)90168-X. N. B. Kaye and G. R. Hunt. Weak fountains. J. Fluid Mech., 558:319–328, 2006. doi:10.1017/S0022112006000383. B. P. Leonard and S. Mokhtari. Beyond first-order upwinding: The ultra-sharp alternative for non-oscillatory steady-state simulation of convection. Int. J. Numer. Meth. Eng., 30(4):729–766, 1990. doi:10.1002/nme.1620300412. T. J. McDougall. Negatively buoyant vertical jets. Tellus, 33(3):313–320, 1981. doi:10.3402/tellusa.v33i3.10718. T. Mizushina, F. Ogino, H. Takeuchi, and H. Ikawa. An experimental study of vertical turbulent jet with negative buoyancy. Warme Stoffubertrag., 16(1): 15–21, 1982. doi:10.1007/BF01322802. B. R. Morton. Forced plumes. J. Fluid Mech., 5(1):151–163, 1959. doi:10.1017/S002211205900012X. S. E. Norris. A parallel Navier–Stokes solver for natural convection and free surface flow. PhD thesis, University of Sydney, 2000. J. S. Turner. Jets and plumes with negative or reversing buoyancy. J. Fluid Mech., 26(4):779–792, 1966. doi:10.1017/S0022112066001526. N. Williamson, N. Srinarayana, S. W. Armfield, G. D. McBain, and W. Lin. Low-Reynolds-number fountain behaviour. J. Fluid Mech., 608:297–317, 2008. doi:10.1017/S0022112008002310. N. Williamson, S. W. Armfield, and W. Lin. Forced turbulent fountain flow behaviour. J. Fluid Mech., 671:535–558, 2011. doi:10.1017/S0022112010005872. H. Zhang and R. E. Baddour. Maximum penetration of vertical round dense jets at small and large Froude numbers. J. Hydraul. Eng., 124(5):550–553, 1998. doi:10.1061/(ASCE)0733-9429(1998)124:5(550)

Removal of Methyl Violet from Aqueous solutions using Sr2ANbO5.5 (A= Ca+2, Sr+2 & Ba+2)

Three members of the A- site doped Nb perovskites with general formula Sr2CaNbO5.5, Sr3NbO5.5 and BaSr2NbO5.5 were synthesised by solid-state methods and their removal efficiency of Methyl violet from aqueous solutions investigated. The X-ray diffraction measurements demonstrated that the three samples have a faced cubic perovskite-type structure in space group Fm 163"> m. The additions of Ba2+ and Ca2+ into the A-site of Sr3NbO5.5 have influenced the cell volume, crystal size and density. Subsequently, the removal capacity was also impacted. The crystallite size of the three oxides was calculated to be less than 82 nm. The maximum removal capacities of Methyl violet are found to be 46.5, 13.1 and 8.0 mg/g using BaSr2NbO5.5, Sr3NbO5.5 and CaSr2NbO5.5 respectively. The amounts of the adsorbed dye have decreased as the ionic radii of the doped cations decreased. The removals of Methyl violet have positive relationship with pH, temperature and the mass of the oxides

Removal of Pb2+ Ions from Aqueous Solution Using Posdonia Oceanica Collected From Tajora Beach (Libya)

The seagrass posdonia oceanic (P.O) was collected from Tajora Beach and employed to remove Pb ions from aqueous solutions. The P.O samples were dried, ground and characterized by SEM, POM and FTIR analysis. The batch mode study showed the removal percentage of Pb2+ icreases up to 88.1 % at 6 hrs using P.O. The maximum capacity of lead removal was found to be 28.82 mg/g. The adsorbed amounts of  Pb2+ have decreased from 3.71 to 0.22 mg/g as pH increased from 4 to 10. The removals of Pb have positive relationship with temperature and the mass of P.O. The activation energy of Pb2+ removal is + 4.1  kJ/mole which suggests the endothermic nature of reaction