Item Difficulty and Item Discrimination Coefficient for School and College Ability Tests (SCAT) Advanced Form in Classical Test Theory (CTT) and Item Response Theory (IRT) and the Correlation among Them Mohammad moqasqas Haifa T. Albokai Assistant Professor of Measurement and Evaluation Associate Professor of Measurement and Evaluation College of Education, Taibah University The aim of this study was to study the item difficulty and item discrimination of the SCAT (advance form) with CTT, and IRT, and to study the correlation among them. To do this, the researchers used the data of their previous study, which conducted in (2011). It consisted of (3943) subject. Then, they used two-statistical programs (TAP, Bilog-MG-3) to obtain the item difficulty and item discrimination coefficient in CTT and IRT. The results revealed a good item difficulty and item discrimination coefficient. Additionally, it showed a significant correlation between CTT and IRT in item difficulty and item discrimination. The researchers recommended of using any of these two theories to obtain the item difficulty and item discrimination for the tests and to do extended studies for the SCAT.
Inelastic magnetic electron scattering M1 at Ex =10.23 MeV form factors in Ca-48 have been investigated. The fp shell model space with four orbits and eight neutrons have been considered and FPD6 has been selected between 32 model space effective interactions to generates the model space vectors for the M1 transition with excitation energy Ex =10.23 MeV and for constructing OBDM. Discarded space (core and higher configuration orbits) has been included through the first order perturbation theory to couple the partice-hole pair of excitation in the calculation of the total M1 form factor and regarding the realistic interaction M3Y as a core polarization interaction with six sets of fitting parameters. Finally the theoretical calculations h
... Show Moreاتسعت دائرة استخدام نظم المعلومات بشكل كبير بحيث دخلت كل مفاصل حياة الانسان المختلفة مما جعل فرص انتهاك واختراق تلك الانظمة امراً لامناص منه. لذلك فان الحاجة تستدعي ايجاد وسائل تقنية واطر جوهرية للتصدي لظاهرة حدوث أي خلل في نظم المعلومات من خلال مراجعة وتدقيق دورة حياة النظام.
يتطرق البحث الى جملة ادوات واساليب تقنية تساعد المدققين والمراجعين من تحديد الخلل وطبيعته وايجاد حل له . كما توفر
... Show Moreيعد الاهتمام بأصحاب الهمم مطلب ديني لجميع الأديان ومطلب اجتماعي لانهم جزء أساسي من المجتمع ينبغي ان يحصلوا على فرصتهم وحقوقهم كباقي افراد المجتمع، فضلا عن كونه مطلب تربوي، إذ يعاني التلاميذ أصحاب الهمم من مشكلات عديدة وذلك لا سباب ترجع لخصائصهم وصفاتهم الخاصة التي ولدوا بها أو اكتسبوها بعد الولادة لسبب من الأسباب، لذا نجدهم يعانون من صعوبات في اكتساب المهارات والخبرات الحياتية بصورة عامة والتعليمية بصورة
... Show MoreThe presence of the other representations in the story of modern Arabic
The other who seek to discuss his presence is the other west, and is nothing new to bring the other whatever, especially the Western literature, especially after the opening of the East West and the occurrence of encounters many Whatever the reasons for them or their causes, and the prevalence of the phenomenon influenced by this Western, and therefore his presence in this literature of any had sex. And certainly our presence (we) also in the literature of the other, and this is very natural, created by the convergence of intellectual, cultural and human, which led to the emergence of the cultural theme of conflict between East and West, and these conflicts take d
Современные исследователи газетного речи много пишу об активном использовании разговорной и даже разговорно-сниженной, жаргонной лексики в общественно-политической публицистике. Это вызвано тем, что «…в силу того контраста, который невольно возникает при соприкосновении разговорных элементов с привычно книжными словами и построениями языка газеты, они были сразу осмыслены как сильное средство созд
... Show Morethe reality of small and medium enterprises analysis reflects weaknesses plaguing these enterprises and strengths that are characterized by, and thus the formulation of appropriate solutions to the obstacles faced by these enterprises to enhance its contribution to the achievement of economic and social development. Iraqi small and medium enterprises suffer from several obstacles stand in front of development and support their competitiveness, the finance one of the main obstacles which impede growth and development of these enterprises, noting the banking system in Iraq reluctance to lend to small and medium-sized enterprises, as a result of the high cost of lending these enterprises compared to large projects, as well as
... Show MoreThis research is a study of the difficulties of learning the Arabic language that faces Arabic language learners in the Kurdistan Region, by revealing its types and forms, which can be classified into two categories:
The first type has difficulties related to the educational system, the source of which is the Arabic language itself, the Arabic teacher or the learner studying the Arabic language or the educational curriculum, i.e. educational materials, or the educational process, i.e. the method used in teaching.
The second type: general difficulties related to the political aspect, the source of which is the policy of the Kurdistan Regional Government in marginalizing the Arabic language and replacing the forefront of th
... Show Moreالاحداث السياسية في العراق بعد 2003 وأثر الانتماء والوعي في التشكيل العراقي المعاصر
The physicochemical behaviour of dodecyltrimethylammonium bromide (DTAB) in water and ethanol-water mixture in the presence and absence of ZnSO4 were studied by measuring the conductivity at 298.15 K. The pre-micellar (S1) and post-micellar slopes (S2) were obtained and calculated the degree of dissociation (α) and the critical micelle concentration (cmc). With an increase in ethanol content, the cmc and α of DTAB increased whereas, in the presence of ZnSO4, the cmc and α decreased. By using cmc and α, thermodynamic properties as the standard free energy of micellization ( ) were evaluated. With an increase in ethanol content, the negative values of are decreased indicating less spont
... Show MoreObjective: The aim of this study is to determine the means and the difficulties faced by students of
nursing maternal and child health nursing / College of Nursing / University of Baghdad in obtaining scientific
information in practical training.
Methodology: A purposive sample of (100) Nursing college student - Maternal and Child Health Nursing
Department were selected. Data were collected through the use of the questionnaire form during the
period from the November 2010 to April 2011. Descriptive statistical procedures were used to analyze the
data.
Results: The results showed that the highest percentage of members of the study sample aged between
(20-21 years), females are the most inhabitants of the city of Ba