The research emphasizes importance of preliminary drawings in design of any product. Therefore, using of simulation as tools for visual thinking in developing drawing and design skills. So that practice of drawing by hand, considering shape of ideas in first stage of visualizations, and practice of its techniques and continuous training.
Hence, the research problem arose with the role of simulation method for developing preliminary sketches in the sample of students of the Product Design Department at the College of Design and Art, PNU, as it is important tool for visual thinking that helps the designer in designing and producing innovative artistic works.
Therefore, the research axes, a number of findings and recommendations were

Naturally available products have been used widely for centuries in handling human disease. The present study aimed to determine the effect of aluminum potassium sulfate addition into the soft liner on tensile strength and peel bond strength. The effect of aluminum potassium sulfate evaluated by two methods, first one include incorporation of KAL (SO4)2 into soft liner monomer in concentration (2%,3% by wt.) while the second method include immersion of soft liner specimens in solution of KAL(SO4)2 in concentration(5%,10% percent) during time periods (0,10 minutes). In conclusions, the results of current study encourage use KAL (SO4)2 within soft liner material

الحمد لله رب العالمين، حمداً يوافي نِعَمَهُ ويُكافئُ مزيدَه، والصلاةُ والسلامُ على سيدِ الأنامِ وإمام المرسَلين، سيدِنا محمدٍ الصادق الأمين. نسأل الله تعالى أن يعلّمَنا ما ينفعُنا وينفعَنا بما علّمَنا، وأن يُعيننا متعلمين ومعلمين على التأدب بأدب القرآن الكريم.

أما بعد، فالعلم هبة الله، وهبة الله لا تُعطى إلا لمن يُعطي من نفسه وقتاً وجهداً وصبراً، لذا قيل: (إنَّ العِلْمَ لا يُعطيكَ بَعضَه

كان النبي (r) العابد المتحنّث، ورجل السياسة الذي شيّد أمة من الفتات المتناثر، ورجلَ حربٍ يضع الخطط ويقود الجيوش، وأباً حنوناً عطوفاً، وزوجاً تحققت فيه المودة والرحمة والسكن، وصديقاً رحيماً، وقريباً كريماً، وجاراً تشغله هموم جيرانه، وحاكماً تملأ نفسه مشاعر محكوميهِ، يعودُهم ويزورُهم ويُعينُهم، ويمنحهم من مودته وعطفه ما يجعلهم يفتدونه بأنفسهم، ومع هذا كله فهو قائم على أعظم دعوةٍ شهدت

Academic writing is a key skill for success in academic life, particularly for graduate students of a foreign language. The importance of writing to academic culture, practice, and knowledge building has led to a great deal of research in many fields, including rhetoric and composition, linguistics, applied linguistics, and English for Academic Purposes (EAP). Often, studies and research investigating academic writing are motivated by the need to inform the learning of writing to native and non-native English-speaking students, through both descriptions of professional academic writing as well as through comparisons of novice writer (native and non-native Englishspeaking) and expert production. However, while learning about academic writing

The research aims to achieve proof of convergence between optimal costs and standard costs in calculating costs for the economic unit, support efforts aimed at adopting optimal costs in cost accounts and accounting thought in general, and achieve benefit from the theory of convergence between optimal costs and standard costs in the field of achieving actual costs in The economic unit in order to reduce and converge, and this came to address the possibility of adopting the concept of optimal costs in the production costs calculations for the purposes of rationalizing administrative decisions, and rationalizing the preparation of financial statements within management accounting.

The research concluded that

Segmented regression consists of several sections separated by different points of membership, showing the heterogeneity arising from the process of separating the segments within the research sample. This research is concerned with estimating the location of the change point between segments and estimating model parameters, and proposing a robust estimation method and compare it with some other methods that used in the segmented regression. One of the traditional methods (Muggeo method) has been used to find the maximum likelihood estimator in an iterative approach for the model and the change point as well. Moreover, a robust estimation method (IRW method) has used which depends on the use of the robust M-estimator technique in

HR Al-Hamamy, AA Noaimi, IA Al-Turfy, AI Rajab, Journal of Cosmetics, Dermatological Sciences and Applications, 2015