يهدف البحث الحالي إلى التحريّ عن صعوبات مادة الامريكيتين ، من وجهة نظر طالبات قسم الجغرافية في كلية التربية للبنات بجامعة بغداد ، تكوّن مجتمع البحث من طالبات المرحلة الثالثة و البالغ عددهن (230) طالبةً ، و لتحقيق هدف البحث اختارت الباحثة الاستبانة كأداةٍ للدراسة ؛ باعتبارها الأداة الأنسب في عملية جمع البيانات النهائية ، و الأكثر شيوعاً بين البحوث التربوية و النفسية ، فضلاً عن الاطلاع على الدراسات التربوية السابقة ذات العلاقة بموضوع البحث الحالي للإفادة منها في إعداد أداة البحث ، و في ضوء ذلك اختارت الباحثة عيّنةً استطلاعية بصورة عشوائية بلغ عددها (30) طالبة ، شكّلت نسبة (0.13) من المجتمع الأصلي ، و وجهت لهنَّ سؤالاً مفتوحاً بهدف التعرف على آرائهنَّ ، و الحصول على أكبر عدد من الصعوبات التدريسية من وجهة نظرهنَّ ، و بعد جمع البيانات الخاصة باستجابات الطالبات تم تصنيف الصعوبات الى خمسة مجالات رئيسة هي ( المادة العلمية- الطالبات- تدريسي المادة - طرائق و أساليب التدريس- أساليب التقويم) بواقع (6) فقرات لكلِّ مجال ، تم احتساب صدق فقراتها بعرضها على مجموعة من المحكّمين و المتخصصين في العلوم التربوية و النفسية و الجغرافية لتحديد مدى صلاحيتها، كما تم حساب ثباتها بطريقة (إعادة تطبيق الاختبار) على عيّنة استطلاعية بلغت (25) طالبة ، اختيرت بطريقة عشوائية شكّلت نسبة مقدرها (0.12) من المجتمع الأصلي المتبقي البالغ (200) طالبة ، و قد تم اعتماد (معامل ارتباط بيرسون) لحساب معامل الثبات ، و لمعرفة صعوبات تدريس مادة الامريكيتين من وجهة نظر الطالبات ، تم تطبيق أداة البحث على عيّنة البحث والبالغة (50) طالبة ، تم اختيارهن بطريقة عشوائية ، و باستخدام المنهج الوصفي التحليلي، و جمع البيانات و تحليلها إحصائياً باستعمال الوسائل الآتية (معادلة فيشر لحساب الوسط المرجح و الوزن المئوي لتحديد الوزن المئوي الخاص بفقرات مجالات الأداة ) ، و بعد ترتيب مجالات الأداة و فقراتها تنازلياً على وفق المعدل العام للوسط المرجح و النسبة المئوية توصلت النتائج الى : إنّ صعوبات مجال المادة العلمية كانت(أولاً) ، و صعوبات مجال طرائق و أساليب التدريس (ثانياً) ، و صعوبات مجال تدريسي المادة (ثالثاً) ،و صعوبات مجال أساليب التقويم (رابعاً) ، و صعوبات مجال الطالبات (خامساً) ، حيث تراوحت قيم أوساطها المرجحة بين (2.04) و(1.74) ، و أوزانها المئوية بين (68.08) و(58.08) على التوالي.
The two parameters of Exponential-Rayleigh distribution were estimated using the maximum likelihood estimation method (MLE) for progressively censoring data. To find estimated values for these two scale parameters using real data for COVID-19 which was taken from the Iraqi Ministry of Health and Environment, AL-Karkh General Hospital. Then the Chi-square test was utilized to determine if the sample (data) corresponded with the Exponential-Rayleigh distribution (ER). Employing the nonlinear membership function (s-function) to find fuzzy numbers for these parameters estimators. Then utilizing the ranking function transforms the fuzzy numbers into crisp numbers. Finally, using mean square error (MSE) to compare the outcomes of the survival
... Show MoreThe contemporary art culture is considered a resultant of preceding human civilizations from the early days. At the same time, it got closer to the local privacy, because the contemporary Iraqi potter worked hard to create new art, refusing to base his art on the early works, creating art pieces that contains properties to inherited art and their form significance, in order to create a new identity of his own, bringing an empowerment to his deepened civilization, with the goal to create national identity ideas from one hand, and entity and locality from another. Europeans also followed the direction of our civilization, such as (Picasso, Henry Moore, Barbra Hurth, Brankouzi, Hans Arp,..etc). From this point of view comes the importance o
... Show MoreThe current study included the isolation, purification and cultivation of blue-green alga Oscillatoria pseudogeminata G.Schmidle from soil using the BG-11liquid culture medium for 60 days of cultivation. The growth constant (k) and generation time (G) were measured which (K=0.144) and (G=2.09 days).
Microcystins were purified and determined qualitatively and quantitatively from this alga by using the technique of enzyme linked immunosorbent assay (Elisa Kits). The alga showed the ability to produce microcystins in concentration reached 1.47 µg/L for each 50 mg DW. Tomato plants (Lycopersicon esculentum) aged two months were irrigated with three concentrations of purified microcystins 0.5 , 3.0 and 6.0
... Show MoreThe research aims to show the dimensions of organizational trust represented by (administrative policies opportunities for innovation and self innovation and self- realization,availability of information,prevailing organizational values) and its reiationship to achieving the strategic position of banks represented by formation of expectations,buiiding networks,learning operations As the research was applied in each of the banks (middle east)Iraqi investment,Al-Ahly Iraqi, Business Bay, Al- Mansour investment bank),the qusestionnaire was adopted as a tool to collect data and information from the sample number (138)who are in the site (department director, division ,M.division director ,division officer, unit officer)the statistica
... Show MoreThe researcher tried to show the importance of using environmental taxes as an effective economic factor for reducing contaminators resulting from cars exhausts, and presenting a suggested pattern for environmental taxes as a nucleus and a starting point for a wider implementing of environmental taxes in Iraq. &nbs
... Show MoreDue to technological developments in the Iraqi banking sector, which is the use of electronic payment systems within the banking infrastructure. This has led to speed and accuracy in the completion of transactions, reduced costs, increased revenues and efficiency. This research examines the challenges and risks facing the Iraqi banking sector as a result of its use of electronic payment systems. And show its impact on the profitability of commercial banks. The research was based on the main hypothesis that there is a statistically significant moral impact relationship between electronic payment systems and the profitability of banks. Iraqi commercial banks were chosen as a research community, All Iraqi commercial banks that parti
... Show MoreThis study aims to apply the theory of "Text from Text and the Plus Dimension" in the analysis of the Prophetic discourse found in the section on the virtues of knowledge and scholars from Imam Sahih al-Bukhari's book. This section covers several topics, including the virtue of gathering for the sake of learning, the superiority of a scholar over a worshipper, the excellence of jurisprudence in the religion of Allah, the acquisition of knowledge through the passing away of scholars, the merit of inviting people to Allah, the continuing benefit of beneficial knowledge after a scholar's demise, the warning against seeking knowledge for purposes other than Allah, and the Prophet seeking refuge from knowledge tha
... Show MoreThe current research is a spectroscopic study of Coumarin 334 dissolved in methanol. The range of concentrations of the prepared stock solution was (3.39x10-9 to 2.03x10-8) M. Some optical characteristics of this dye were investigated such as absorbance and transmission spectra, absorption coefficient, refractive and extinction coefficients, oscillation and dispersion energies, and energy band gap. The absorbance spectra were recorded at 452 nm using Broad Band Cavity Enhanced Absorption Spectroscopy (BBCEAS) which depends on increasing the path length of the traveling light from the source to the detector. The minimum absorbance amount was 0.07 with a low concentration of 3.39x10-9 M. As a result, the ot
... Show MoreThe research aims to study and definition of the concept of creative accounting and motives adopted by the management of companies to achieve their own goals and their impact on the reliability of the financial statements and the tax settling accounts and whether that tax administration is able to detect and limit the creative accounting practices and impose legal sanctions deterrent against companies The research has come to a set of conclusions, including:
- The administration motives in the use of creative accounting methods, some internal motives related to the interests of the administration in maximizing profits to increase incentives and rewards, others are external, such as the impact on stock prices or reduce the am