This work presents a five-period chaotic system called the Duffing system, in which the effect of changing the initial conditions and system parameters d, g and w, on the behavior of the chaotic system, is studied. This work provides a complete analysis of system properties such as time series, attractors, and Fast Fourier Transformation Spectrum (FFT). The system shows periodic behavior when the initial conditions xi and yi equal 0.8 and 0, respectively, then the system becomes quasi-chaotic when the initial conditions xi and yi equal 0 and 0, and when the system parameters d, g and w equal 0.02, 8 and 0.09. Finally, the system exhibits hyperchaotic behavior at the first two conditions, 0 and 0, and the bandwidth of the chaotic

احتوى الباب الأول على التعريف بتمارين اللعب السريع والتي تعد وسيلة ناجحة لتنمية القدرات العقلية والمهارية والخطيطة. وتتحدد مشكلة البحث في ان اغلب اللاعبين العراقيين يتمتعون بأداء جيد اثناء التمرين في حين لا يعطون الاداء نفسه اثناء المباراة، إذ ان الحصة الأكبر من التمرين هي مهارية وبدنية والتمرين على الحالات الخططية بشكل بسيط، وان بعض اللاعبين يصابون بخيبة امل كونهم غير قادرين على اداء فعال في اللعب السري

تكمن أهمية البحث في اهمية الموضوع الذي تتناوله كون موضوع الابداع الاداري والقيادة التحويلية أحد الموضوعات المهمة التي حظيت ولاتزال تحظى باهتمام بالغ من قبل المهتمين بهذا المجال حيث ان تقدم المدارس في المجال الرياضي وتطورها واستمرارها يعتمد بشكل رئيس على القيادات التي تحركها وترسم خططها وسياساتها وما تملك تلك القيادات من سلوكيات القيادة التحويلية في تطوير كفاءتهم في العمل الاداري, لذا  وضع الباحثان بعض

.أن للاتزان في دراسة حركة الاجسام اثناء الاداء الرياضي حيث ان الاتزان الثابت والمتحرك يدخل ضمن الكثير من الفعاليات وتتأثر بالقوة الخارجية خلال ذلك الاداء وتختلف حسب نوع الفعالية لذلك ان التدريب وفق عبئ مسلط على عضلات معينة لم يتم الاهتمام بتدريبها بشكل خاص اثناء التمرينات التقليدية وفعالية 110م حواجز من اهم الفعاليات التي تتطلب اهتماما بجانب القدرات البدنية الخاصة المتمثلة بعضلات تعمل حسب خصوصية الاداء وا

.هدفه البحث الى التعرف على أهم المتغيرات الكنيماتيكية المصاحبة لأداء اجتياز الحاجز في فعالية (110) متر حواجز لدى المبتدئين . وكذلك التعرف على تأثير التغذية الراجعة وفقاً لأهم المتغيرات الكنيماتيكية في مستوى أداء المبتدئين ( المجموعة التجريبية ) . أستخدم الباحث المنهج التجريبي . تكونت عينة البحث من (12) طالب تم اختبارهم من طلاب الصف الثاني في كلية التربية الرياضية – جامعة بابل – للعام الدراسي 2004- 2005 . وتم اختيارهم

تكمن اهمية البحث باستخدام الادوات الرياضية الحديثة بطريقة علمية لم تستخدمة من قبل في درس التربية الرياضية بواسطة دائرة تعليمية مبتكرة تساعد في تطور القدرات البدنية لطلاب خلال درس الترية الرياضية، فضلا عن تعلم الوثبة الثلاثية بشكل مبسط له دون تعقيد، أما اهداف البحث فهي معرفة استخدام دائرة الادوات المبتكرة في تطور بعض القدرات البدنية وتعلم فعالية الوثبة الثلاثية لعينة البحث، واستخدم الباحث المنهج التجريب

The aim of the research is to demonstrate the extent of the impact of resource consumption accounting technicality as an administrative technique that is compatible with the rapid developments and changes in the external environment, with the information it provides and scientific foundations in the allocation of indirect costs, and the identification and measurement of idle energy and its costs in a way that contributes to the rationalization of pricing decisions in economic units. In light of the intense competition and the multiplicity of alternatives, and to achieve this goal, a random sample was chosen.

Abstract

Heavy-duty diesel vehicle idling consumes fossil fuel and reduces atmospheric quality at idle period, but its restriction cannot simply be proscribed. A comprehensive tailpipe emissions database to describe idling impacts is not yet available. This paper presents a substantial data set that incorporates results from DI multi-cylinders Fiat diesel engine. Idle emissions of CO, hydrocarbon (HC), oxides of nitrogen (NOx), smoke opacity, carbon dioxide (CO₂) and noise have been reported, when three EGR ratios (10, 20 and 30%) were added to suction manifold.

CO₂ concentrations increased with increasing idle time and engine idle speed, but it didn’t show clear effect for IT adva

Background: The present in-vitro study was undertaken to evaluate and compare fracture resistance of weakened endodontically treated premolars with class II MOD cavities restored with different bulk fill composite restorations (EverX posterior, Alert, Tetric EvoCeram Bulk Fill, and SDR). The type and mode of fracture were also assessed for all the experimental groups. Materials and Method: Forty-eight human adult maxillary premolar teeth were selected for this study. Standardized extensive class II MOD cavities with endodontic treatment were prepared for all teeth, except those that were saved as intact control. The teeth were divided into six groups of eight teeth each (n=8): (Group 1) intact control group, (Group 2) unrestored teeth with

The goal of this study is to determine interior pathogen that causes Diarrhea state to chidren between (1-15) years old, theirs patient from (learn hospital of alemamen alkadoman) in the city of Baghdad from 25/4/2014 to 1/10/2014 period of time, the study represents 103 sample of stool, the result represents that highest ration of infected by 48.545%, Rotavirus 39.80%, mix infected(parasite + Rotavirus) 8.73%, with record of lowest infection ration 2.91%, found during the study that the age group 1-5 years showed the highest percentage of injury Rotavirus by also reached 60.98% case common injury (Rotavirus and parasitic) where this age group, the highest recorded percentage of injuring 66.67%, As for parasitic infected which represente

  Corrosion behavior of aluminium in 0.6 mol. dm-3 NaCl solution in acidic medium 0.7 was investigated in the absence and presence of different concentrations of amino acid, methionine, as environmentally – friendly corrosion inhibitor over temperature range (293-308)K. The investigation involved electrochemical polarization method using potentiostatic technique and optical microscopy, the inhibition efficiency increased with an increase in inhibitor concentration but decreased with increase in temperature. Results showed that the inhibition occurs through adsorption of the inhibitor molecules on the metal surface and it was found to obey Langmuir adsorption isotherm. Some thermodynamic parameters ∆. and activation ener

The frightening growth of bacterial infections and their resistance to most first-line antibiotic drugs have made antibacterial therapy challenging. High accuracy, reduced time and effort, high cost, and a theoretical chemical study to find alternative treatments are preferable considerations. Chemical programs designed 150 fluoroquinolones in a theoretical study, and determined the top five based on their optimal binding affinity. The binding affinity (G) was calculated in Swiss Dock; a more negative G indicates a more suitable binding between the compound and the protein. This study selected the top five fluoroquinolones against each protein. The ΔG calculations indicate compound B has the highest inhibitory activity against Staph

تساهم مشاكل عدم استقرار الآبار في زيادة الوقت غير الإنتاجي، خاصة عند حفر الصخور الصخرية. في الماضي، كان الحفر يعاني من العديد من المشكلات، بما في ذلك فقدان الطين، والثقب الضيق، والأنابيب الملتصقة ميكانيكيًا، والتجويف، وانهيار الثقوب الكبيرة. الغرض من هذه الدراسة هو بناء نموذج الأرض الميكانيكية (MEM) لتقييم استقرار حفرة البئر. ومن خلال تطبيق MEM، ركزت الدراسة على تحديد مجموعة من الأوزان الطينية التي من شأنها ض

المقدمة: الإصابة بفيروس التهاب الكبد الوبائي (سي) هو أحد الأسباب الرئيسية لأمراض الكبد المزمنة، قدرت منظمة الصحة العالمية أن حوالي 170 مليون شخص مصابون بالتهاب الكبد الوبائي (سي)، ثبت مؤخرا أن سيليمارين (ليكالون) فعال في علاج التهاب الكبد الوبائي (سي).

الاهداف: فعالية سيليمارين (ليكالون) على الحمل الفيروسي في المرضى الذين يعانون من التهاب الكبد الوبائي (سي).

يهدف البحث الحالي التعرف الى :

الرفاهية الأكاديمية لدى طلبة الجامعة، وتكونت عينة البحث الحالي من (٥٥٤) طالباً وطالبة من طلبة جامعة بغداد تم اختيارهم بالطريقة العشوائية الطبقية وبالأسلوب المتناسب من مجتمع البحث الأصلي على وفق الجنس ( الذكور، الاناث) والتخصص العلمي ، الانساني وللعام الدراسي (٢٠٢٣-٢٠٢٤). ولتحقيق أهداف البحث الحالي قامت الباحثتان بالاتي :

إعداد مقياس الرفاهية الاكاديمية وفق نظرية (2012 Tuom

  يهدف هذا البحث إلى تحليل وتقويم محتوى كتاب الحاسوب للصف الرابع الاعدادي (العلمي والأدبي) في العراق وفق مهارات التفكير الناقد ومعرفة مدى اكتساب الطلبة لها، وتم اعتماد منهج البحث الوصفي التحليلي، وصُممت أداتا البحث كالآتي: الأداة الأولى تحليل المحتوى وفقاً لمهارات التفكير الناقد، كما استندت عملية التحليل الى وحدة الفكرة الصريحة. والأداة الثانية تم بناء اختبار اكتساب الطلبة لمهارات التفكير الناقد تكو

لعبة كرة القدم للصالات من الألعاب ذات التي تحتاج الى المؤشرات الفسلجية  المميزة والتي تعتمد على بناء متكامل لكي يستـــــطيع اللاعب تحمل الأعباء التي تواجهه اثناء المباراة نجد أن المتغير الاساسي الذي يحتاج اليه لاعب الصالات بكرة القدم هو اللياقة البدنية. وتماشيأ مع أسلوب التدريب المتقاطع بكرة القدم للصالات فقد لجأ الباحث الى استخدام أساليب ووسائل وأجهزه وأدوات حديثة لتنفيذ العملية التدريبية وفق أسس علم

The theoretical analysis depends on the Classical Laminated Plate Theory (CLPT) that is based on the Von-K ráman Theory and Kirchhov Hypothesis in the deflection analysis during elastic limit as well as the Hooke's laws of calculation the stresses. New function for boundary condition is used to solve the forth degree of differential equations which depends on variety sources of advanced engineering mathematics. The behavior of composite laminated plates, symmetric and anti-symmetric of cross-ply angle, under out-of-plane loads (uniform distributed loads) with two different boundary conditions are investigated to obtain the central deflection for mid-plane by using the Ritz method. The computer programs is built using Ma

The importance of the current research lies in the importance of teaching competencies and the ability of the teacher to deal and success in his educational career. The research aimed to identify the degree of teaching competencies according to Hermann model of physical education teachers in Baghdad governorate. The descriptive method using the survey method was used on a randomly selected sample of 462 teachers and 314 school principals. After the completion of the survey, the Hermann scale forms were distributed to the teachers. The forms of the teaching competency scale were distributed to their school principals as the direct supervisors of the teachers' evaluation. After completing the survey, the results of each scale were classified

     The present study includes a theoretical treatment to derive the general equations of pumping threshold power ( ), laser output power (P_out), and laser device efficiency (ƞ) of the element-doped thin-disk laser (Yb³⁺) with a quasi-three-level pumping scheme in the continuous wave mode at a temperature of (299K^°). In this study, the host crystals (YAG) were selected as typical examples of this laser design in a Gaussian transverse mode. The numerical solution of these equations was made using Matlab software by selecting the basic parameters from the recently published scientific articles for the laser design of these crystal hosts. According to this simulation, this article studied the effect o

    The goal of this research to identify the effect of the probing questions in the collection of material literature with students of the Kurdish language department, to achieve the aim of the research, the researcher has chosen a sample from the students of third stage of the Kurdish language Department, Faculty of Education / Ibn Rushd as a field for the application of experiment.The number of sample  reached (71) students divided into two groups represented two divisions of the experimental groups under study to the style of questions sounding by (35) students, and represented the other division of the control group, which studied in the way normal and by (36) students, as rewarded r

It is certain that marriage has the favor of the continuity of human kind since the Prophet Adam till now. But this important event is threatened by some justifications which lead to its delay or abandonment. In the West, sexual relations, illegal friendships, and disrespect of marriage sacredness lead to this delay. While the reasons behind the delay of marriage in the Arab world refer to high dowries, women go out to work, and the religious and scientific ignorance of the need and importance of marriage. The problem also differs according to the difference between the rural and urban regions. On one hand, we find that early marriage is a necessity in the rural regions; on the other hand, the delay of marriage is a clear and nat

The bit record is a part from the daily drilling report which is contain information about the type and the number of the bit that is used to drill the well, also contain data about  the used weight on bit  WOB ,revolution per minute RPM , rate of penetration ROP, pump pressure ,footage drilled and bit dull grade. Generally we can say that the bit record is a rich brief about the bit life in the hole. The main purpose of this research is to select the suitable bit to drill the next oil wells because the right bit selection avoid us more than one problems, on the other hand, the wrong bit selection cause more than one problem. Many methods are related to bit selection, this research is familiar with four of thos

In this research, the concentration of radon gas has been calculated in the classrooms of schools in Diyala Governorate by using the nuclear track detector (CR-39), which was one of the organic solid-state nuclear detectors (SSNTDs). After calculating the radon gas concentration, the lung cancer cases were calculated. The results showed that the lowest value was found in (Alshumue) school (4.753) people. In contrast, the highest value was found in (Habhib) school (20.421). The average values of lung cancer cases in Diyala governorate were equal to (9.319) per person. The results showed that the number of lung cancer cases per year per million persons in Diyala Governorate schools was below the allowed limit from (ICRP) agency (170-230) p

This work used the deposition method to synthesize nickel oxide nanoparticles. The materials mainly used in this study were nickel sulfate hexahydrate (as a precursor) and NaOH (as a precipitant). The properties of the nanopowder were characterized by XRD, FE-SEM, EDX, and VSM. The obtained results confirmed the presence of nickel oxide nanoparticles with a face-centered cubic (FCC) structure with a lattice constant (a=4.17834 Å). Scherer and Williamson-Hall equations were used to calculate the crystallite size of about (30.5-35.5) nm. The FE-SEM images showed that the particle shape had a ball-like appearance with a uniform and homogeneous distribution and confirmed that the particles were within the nanoscale. The presence of oxygen a

  The influence of annealing on quaternary compound Ag0.9Cu0.1InSe2 (ACIS) thin film is considered a striking semiconductor for second-generation solar cells. The film deposited by thermal evaporation with a thickness of about 700 nm at R.T and vacuum annealing at temperatures (373,473) K for 1 hour. It was deposited in a vacuum of 4.5*10-5 Torr on a glass substrate. From XRD and AFM analysis, it is evident that Ag0.9Cu0.1InSe2 films are polycrystalline in nature, having ideal stoichiometric composition. Structural analysis indicated that annealing the films following the deposition resulted in the increasing polycrystalline phase with the preferred orientation along (112) direction. , increasing crystallite size and average grain size