تعتبر المدرسة المتوسطة هي القاعدة التعليمية الثانية بعد المدرسة الابتدائية والتي تقوم عليها أنظمة التعليم المتنوعة فهي تمثل اللبنة الثانية في الصرح التعليمي لأنها مرحلة مهمة تستقبلها الطلبة في العمر الحرج المليء بالتطورات الجديدة على المستويات الثلاثة البايلوجي والنفسي والاجتماعي وعليه يأتي هنا دور القيادة التربوية للقيام بواجباتهم الإدارية والقيادية في قمة الهرم الإداري للمدرسة المتوسطة والتي تستوجب بلا شك امتلاكهم القدرات والمهارات اللازمة لقيادة العمل التربوي.
لذا يعد مدير المدرسة المتوسطة قائد تربوي له الدور المهم والفاعل في نجاح العملية التربوية في المدرسة التي يتولى أدارتها ويفترض أن تكون لديه الخبرة والمؤهلات اللازمة ولولا التنظيمي والالتزام من خلال قيادة مدرسة ناجحة تعمل على إرساء علاقات إيجابية مع المدرسين ويثر حوافزهم لعمل ويرى الباحث أن مديري المدارس المتوسطة لا يسيروا في قيادة مدارسهم وتعاملهم مع المدرسين والطلبة وأفراد المجتمع المحلي الذي لهم اتصالات أو علاقات مختلفة مع المدرسة على نمط واحد في القيادة ولا يكون لديهم برامج يطبق في المدرسة أو تنفيذ في تعاملهم الشخصي واجراتهم ووسائلهم الإدارية باختلاف حلقاتهم الإدارية من جهة واختلاف أعدادهم وتدريبهم واتساع خبرتهم ونظرتهم إلى الإدارة من جهة أخرى، ونظراً لهذا الاختلاف فأننا لا نستطيع أيجاد نمط واحد من أنماط الإدارة أو أسلوب متماثل في سلوك أداري لمدير المدارس المتوسطة كافة، ومع ذلك فان الفاحص أو المدقق لما يجري من هذه المدارس على اختلاف أنواعها ومستوياتها من أعمال أدارية وتصرفات شخصية نستطيع أن نلمس النمط القيادي المتبع من قبل مدير تلك المدارس، أن النمط القيادية الذي يطبق به مدير المدرسة المتوسطة من الممكن أن ينعكس على درجة رضا المدير عن عمله، كما أنه قد ينعكس على سلوكه وإخلاصه وثقافته في صدق أهدافه.
وفي ضوء ما تقدم فان ما يمارسه مديرو المدارس من أنما قيادية وعلاقتها برضا العاملين في المدارس المتوسطة من أعضاء الهيئات التدريسية أو المشرفين الإداريين على وجه التحديد ومدى تأثير هذه الأنماط على مناخ العلاقات الشخصية والإنسانية في هذه المدارس يثير كثير من التساؤلات حول ما يدور داخل هذه المؤسسات التربوية التعليمية والتي يحسها الباحث خلال عمله في الوسط التعليمي وفي هذه المرحلة الدراسية ومعايشته ولقاءاته مع العديد من المشرفين الإداريين وأعضاء الهيئات التدريسية لهذا رأى الباحث ضرورة دراسة هذا الموضوع للتعرف على أنماط القيادات التربوية والإدارية لكتابة عنوان البحث.
This paper has investigated experimentally the dynamic buckling behavior of AISI 303 stainless steel Aluminized and as received long columns. These columns, hot-dip aluminized and as received, are tested under dynamic buckling, 22 specimens, without aluminizing (type 1), and 50 specimens, with hot-dip aluminizing at different aluminizing conditions of dipping temperature and dipping time (type 2), are tested under dynamic compression loading and under dynamic combined loading (compression and bending) by using a rotating buckling test machine. The experimental results are compared with Perry Robertson interaction formula that used for long columns. Greenhill formula is used to get a mathematical model that descripts the buckling behavior
... Show MoreIn this study, the acid-alkaline transesterification of refined coconut seed oil (RCOSO) to fatty acid methyl ester was followed by the production of a trimethylolpropane-based thermosensitive biolubricant using potassium hydroxide, and its physicochemical characteristics were evaluated. The American Standard Test for Materials (ASTM) was employed to ascertain the biolubricant's pour point and index of viscosity, which were found to be -4 oC and 283.75, respectively. The opposite connection between lubricant viscosity and temperature was shown by the measured viscosities at varied transesterification to be transformed into biodiesel. Following this, a biolubricant was created by further transesterifiedtemperature. The ester gr
... Show MoreThe members of the family of Eentrobacteriaceae harbour a gene cluster called polyketide synthase (pks) island. This cluster is responsible for the synthesis of the genotoxin colibactin that might have an important role in the induction of double-strand DNA breaks, leading to promote human colorectal cancer (CRC). Eleven out of the eighty eight isolates (12.5%) were pks+, distributed as 7 (8%) isolates of E. coli, 2 (2.25%) of K. pneumoniae and 2 (2.25%) of E. aerogenes. The cytotoxic effects of selected pks+ isolates (E. coli and E. aerogenes) on HeLa cells were represented by decreasing cell numbers and enlarged cell nuclei in comparison to the untreated cells. Cyt
... Show MoreThis dissertation studies the application of equivalence theory developed by Mona Baker in translating Persian to Arabic. Among various translation methodologies, Mona Baker’s bottom-up equivalency approach is unique in several ways. Baker’s translation approach is a multistep process. It starts with studying the smallest linguistic unit, “the word”, and then evolves above the level of words leading to the translation of the entire text. Equivalence at the word level, i.e., word for word method, is the core point of Baker’s approach.
This study evaluates the use of Baker’s approach in translation from Persian to Arabic, mainly because finding the correct equivalence is a major challenge in this translation. Additionall
... Show MoreMicrobiological contamination by fungi impacts the quality and safety of wheat grain storage. This study aimed to evaluate the efficacy of cold plasma in restricting the growth of the fungus, Aspergillus niger, which was isolated from wheat grains. A dielectric barrier discharge (DBD) operating at atmospheric pressure generated cold plasma that was used to treat the fungus, and the impact of this treatment was investigated at various periods 1, 2, 4, 6, and 15 minutes. The results revealed a highly significant decrease in the growth and number of spores of Aspergillus niger compared to the controls. This study revealed an efficient technique for enhancing wheat grain storage that could be a foundation for further large-scale studies.
... Show MoreDiabetes mellitus caused by insulin resistance is prompted by obesity. Neuropeptide Nesfatin-1 was identified in several organs, including the central nervous system and pancreatic islet cells. Nesfatin-1 peptide appears to be involved in hypothalamic circuits that energy homeostasis and control food intake. Adiponectin is a plasma collagen-like protein produced by adipocytes that have been linked to the development of insulin resistance (IR), diabetes mellitus type 2 (DMT2), and cardiovascular disease (CVD). Resistin was first identified as an adipose tissue–specific hormone that was linked to obesity and diabetes. The aim of this study was to estimate the relationship between human serum nesfatin-1, adiponect
... Show MoreThe necessary optimality conditions with Lagrange multipliers are studied and derived for a new class that includes the system of Caputo–Katugampola fractional derivatives to the optimal control problems with considering the end time free. The formula for the integral by parts has been proven for the left Caputo–Katugampola fractional derivative that contributes to the finding and deriving the necessary optimality conditions. Also, three special cases are obtained, including the study of the necessary optimality conditions when both the final time and the final state are fixed. According to convexity assumptions prove that necessary optimality conditions are sufficient optimality conditions.
... Show MoreThe banking sector has a significant impact on the economic growth of the country, and the importance of this sector must assess its financial performance from time to time, to measure the situation related to money for each bank and how to put the supervision of the efficiency of the full. The research aims at evaluating the financial performance according to the elements of the CAMELS model, which including capital adequacy, asset quality, management efficiency, profitability, liquidity, and market risk sensitivity. The research included the study of Al-Mansour Investment Bank during the period from 2014 to 2018. The base capital ratio was used to total assets to measure capital adequacy The proportion of investments to total a
... 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 electrospun nanofibers membranes (ENMs) have gained great attention due to their superior performance. However, the low mechanical strength of ENMs, such as the rigidity and low strength, limits their applications in many aspects which need adequate strength, such as water filtration. This work investigates the impact of electrospinning parameters on the properties of ENMs fabricated from polyacrylonitrile (PAN) solved in N, N-Dimethylformamide (DMF). The studied electrospinning parameters were polymer concentration, solution flow rate, collector rotating speed, and the distance between the needle and collector. The fabricated ENMs were characterized using scanning electron microscopy (SEM) to understand the surface morphology and es
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