The interplay of predation, competition between species and harvesting is one of the most critical aspects of the environment. This paper involves exploring the dynamics of four species' interactions. The system includes two competitive prey and two predators; the first prey is preyed on by the first predator, with the former representing an additional food source for the latter. While the second prey is not exposed to predation but rather is exposed to the harvest. The existence of possible equilibria is found. Conditions of local and global stability for the equilibria are derived. To corroborate our findings, we constructed time series to illustrate the existence and the stability of equilibria numerically by varying the different values

 Represent choices Behaviorism available to the Managerial leaders one of the prerequisites to run any beginnings of a psychological or dilemmas Managerial barriers to working in the field of work has been varied these options until it had taken several kinds of which contributed to the left different impacts on the alleviation of these problems, which prompted the researcher to raising the problem of study within the framework of questionable content how to contribute to that shown by Choices Behaviorism accredited to the Managerial leaders in the management of frustration

Analysis the economic and financial phenomena and other requires to build the appropriate model, which represents the causal relations between factors. The operation building of the model depends on Imaging conditions and factors surrounding an in mathematical formula and the Researchers target to build that formula appropriately. Classical linear regression models are an important statistical tool, but used in a limited way, where is assumed that the relationship between the variables illustrations and response variables identifiable. To expand the representation of relationships between variables that represent the phenomenon under discussion we used Varying Coefficient Models

This paper depends on sheding some litgt on the characteristics of political
relations between the arab and the Persian during the reign of sassane kings.
"Ardashir the first, shahbour the first, shahbour the second, Bahram the fifth; kisra
Anushrwan and kisrah abruis"
And who rulled the Persian before the Islamic conquest and were adopted in this studym
as a model. It was possible to get some information from invaluable refereces in order to
arrive at a clear image as regards the nature of these relations. These relations were
differently political according to the circumstances of ruling, interests and the personality
of those kings.

The research draws its importance from identifying the methods of profit management in misleading the financial statements, which in turn is reflected in the decisions of the authorities that relied on these reports, and then the models that help in detecting those methods used by the auditors. Risks. The index (margin of excess cash) was used to detect profit management practices on a group of banks listed in the Iraqi market for securities and the number of (23) banks, including (12) commercial bank and (11) Islamic bank and the results were compared to commercial banks with Islamic banks.((The research started from the hypothesis that the use of the (excess cash margin) model in the banking sector reveals the management

ٕ ضٞظ٤ق جالْطٌٞز ك٢ جالوخ هى ظٍٜ ً٘ٓ ظٌٜٞ جالوخ جٗٞ٤ُح٢ٗ جُوىْ٣ ، جي ضؼى ٌجكىج ٜٔٓح ُالوخ ذحؾحٚٓٗ جُٔهطِلس ؛ قط٠ أٚركص جُ٘ٞٛ٘ جٍُٓو٣س جُكى٣ػس ٝ جُٔؼحٍٚز ، ال ٌٜ٘ٔ٣ح ضكو٤ن ٖؼ٣ٍطٜح ٝ ٓطؼطٜح وٕٝ جالْطِٜحّ ٖٓ جألْطٌٞز ذ٘حت٤ح أٝ ك٣ٌٍح ، ًُج كوى ض٘حٍٝ جُركع ذىٌٙٝ ضٞظ٤ق جْطٌٞز ٕٖٞٗٔ جُطٌٞجض٤س ، ٢ٛٝ ٖٓ جالْحٍ٤٠ جُط٢ ٝؾىش قٌٟٞج ك٢ جالوخ جُؼح٢ُٔ ٝجُؼر١ٍ .جي ئٕ ضٞظ٤لٜح ك٢ جالوخ ٣ؼطٜ٤ح ذؼىج ٤ٓطحك٣ُ٤وح ٝجنٍ جٓٗح٢ٗ ٣ؿٔغ ك٢

The ammeter is art form from folklore of the Arab perform many character so he is actor several from place to another,  you able to use your tools (body) and (voice),  he is genus ammeter that the character

The National trend and employment of Islamic heritage.

This stydy is an attempt to concept The employment of national Trend of Islamic heritage to serve ideological goals .

The research indicates to Arabic sights of heritage and the heritage through the curriculum of the first hational association , especially the first national trend , Arab mobile associate and also Almuthana , Al_Haritha Al_sho clubs .

The research depends on more origin documents and more Iraqi journals.

Surface water samples from different locations within Tigris River's boundaries in Baghdad city have been analyzed for drinking purposes. Correlation coefficients among different parameters were determined. An attempt has been made to develop linear regression equations to predict the concentration of water quality constituents having significant correlation coefficients with electrical conductivity (EC). This study aims to find five regression models produced and validated using electrical conductivity as a predictor to predict total hardness (TH), calcium (Ca), chloride (Cl), sulfate (SO4), and total dissolved solids (TDS). The five models showed good/excellent prediction ability of the parameters mentioned above, which is a very