An energy and exergy thermodynamic analysis using EES program was done for a domestic refrigerator working with R-134a using vapor compression refrigeration cycle. The analysis deals with the system component, i.e. compressor, condenser, evaporator and the expansion device. The analysis depends on the entropy generation minimization approach to improve the refrigerator performance by exploring the optimum design points. These design points were derived from three different theories governing the entropy generation minimization using exergy analyzing method. These theories were first applied to find the optimum balance between the hot inner condenser area and the cold inner evaporator area of the refrigerator and between

This paper deals with finite element modeling of the ultimate load behavior of double skin composite (DSC) slabs. In a DSC slab, shear connectors in the form of nut bolt technique studs are used to transfer shear between the outer skin made of steel plates and the concrete core. The current study is based on finite element analysis using ANSYS Version 11 APDL release computer program. Experimental programmes were carried out by the others, two simply supported DSC beams were tested until failure under a concentrated load applied at the center. These test specimens were analyzed by the finite element method and the analyses have shown that these slabs displayed a high degree of flexural characteristics, ultimate strength,

The major objectives of this research are to analyze the behavior of road embankments
reinforced with geotextiles constructed on soft soil and describe the finite element analysis by using
ANSYS program ver. (5.4). The ANSYS finite element program helps in analyzing the stability of
geo- structure (embankment) in varied application of geotextiles reinforcement to enhance the best
design for embankment.
The results of analysis indicate that one of the primary function of geotextiles reinforcement was to
reduce the horizontal displacement significantly. With the inclusions of reinforcement, the horizontal
displacement reduced by about (81%), while the vertical displacement reduced by (32%). The effect
of geotextiles

In this paper, photometric analysis of two short period group of the eclipsing binaries (RS CVn); RT And and BH Vir is presented. New physical and geometric parameters were obtained by performing two computer modeling. The first model is software package PHOEBE based on the Wilson–Devinney method, and the second is Binary Maker 3 (BM3).Our results are in good agreement with those obtained using the same modeling.

Rotating fan shaft system was investigated experimentally and theoretically to study its dynamic performance. The type of oil used for the bearing was taken in consideration during the experimental program .Three types of oil were used, SAE 40, SAE 50 and degraded oil. During the experiments, the fan blades stagger angle was changed through angles (20˚, 30˚, 40˚, and 50˚). The shaft rotational speed also changed in the range of (0-3000 rpm). All these parameters have investigated for two cases (balanced and unbalanced fan). The performance parameters of the fan were found experimentally by measuring the fan, volume flow rate, Reynolds and Strouhal numbers, efficiency and pressure head. Analytical part was also represented to prepare

The COVID-19 pandemic has profoundly affected the healthcare sector and the productivity of medical staff and doctors. This study employs machine learning to analyze the post-COVID-19 impact on the productivity of medical staff and doctors across various specialties. A cross-sectional study was conducted on 960 participants from different specialties between June 1, 2022, and April 5, 2023. The study collected demographic data, including age, gender, and socioeconomic status, as well as information on participants' sleeping habits and any COVID-19 complications they experienced. The findings indicate a significant decline in the productivity of medical staff and doctors, with an average reduction of 23% during the post-COVID-19 period. T

  That it is essential to be for us to recognize is that the phenomenon of poverty are addressed most of the doors of Arab countries in general and Iraq in particular, with the contrast between Qatar and another, and that the deteriorating situation of developing countries it is clear that poor people are victims of exploitation and inequality.
  That dealing with the phenomenon of poverty should be more present in mind, especially since the Arab world that enters the era of so-called globalization, as more people poor, and the increase of the utilization of materials Arab interests abroad under the competition is unequal and the impoverishment of deliberate environmental and resource Arab

ABSTRACT

The Iraqi Government had used all Possible methods of financing the fiscal deficit according to the economic and Political Circumstances at the time. It had borrowed from abroad during the 1980_s. Those methods of borrowing led to negative impacts on the Iraqi economy such as increased external dept burden, higher inflation rate, negative interest rate and accumulation of domestic debt.

The "Financial Management and Public Debt" law no 95/ 2004 made a great change in those methods of Financing fiscal deficit in Iraq. Before 2004, the deficit was financed by issuing Treasury Bills and selling them to the Central Bank of Iraq with a prefixed interest rate. Thus, i

تدريس العلاقات الدولية في العراق

ويُعدَّ التعليم الجامعي احد أهم العناصر في تطور المجتمع وسبب مهم في رفع مستوى المجتمع من جميع النواحي الثقافية، والفكرية ، والاجتماعية، والاقتصادية العلمية، ويعدّ التعليم الجامعي من وسائل التنمية والمهارات وبناء وإعداد القدرات المادية والبشرية التي تحتاجها القطاعات كافة، ومواكبة التطور العلمي والتكنولوجي؛ ان الهدف الاساس من التعليم الجامعي هو تخريج...