Total Degree Research Articles

Study of the effect of crystallization conditions on the structure of polyurethane block copolymer based on poly-ε-caprolactone diol and isophoron diisocyanate

In the paper a study of isothermal crystallization kinetics of polyurethane on the basis of poly-ε-caprolactone diol, isopforon diisocyanate and 1, 4-butanediol is presented. The process of isothermal crystallization in the temperatures range from -15 to 30ºC was studied by DSC method. Analysis of total melting enthalpy and degree of crystallinity of the polyurethane allows to obtain material with one or two melting points of polyester block at desired temperature. These results will help in design of new thermoplastic elastomers with one- or two-stage shape memory effect.

Hydrolysis of Hydroxypropyl Methylcellulose by Trifluoromethanesulfonic Acid and Subsequent Determination of Chemical Structure by 13C NMR Spectroscopy

The hydrolysis of three hydroxypropyl methylcellulose samples with varying degrees of polymerization by aqueous solutions of trifluoromethanesulfonic acid with a concentration of 1, 2, 3, and 4% at a temperature of 80, 90, 100, and 110°C in a microwave reactor is studied. The completeness of hydrolysis is estimated by 13C NMR spectroscopy of the disappearance of the signal the acetal carbon atom. It is shown that the concentration of acid has the greatest influence on the hydrolysis rate, the effect of temperature increase is not so strong, and the effect of reaction time is even smaller. Using 13C NMR spectroscopy, substitution parameters at the second, third, and sixth positions (DSC-2, DSC-3, and DSC-6) are determined, the amount of methyl (DSMe) and hydroxypropyl groups (DSHP) is estimated, and the total degree of substitution (DStotal) is calculated.

إدارة الذات وعلاقتها بمهارات إتخاذ القرار لدى مدیرى المدارس فى ضوء بعض المتغیرات (النوع ، سنوات الخبرة ، المستوى التعلیمى)

أهداف البحث : - التعرف على العلاقة بين إدارة الذات ومهارات إتخاذ القرار لدى مديرى المدارس. - التعرف على الفروق بين مديرى المدارس فى إدارة الذات التى تعزى (للنوع ، سنوات الخبرة ، المستوى التعليمى). - التعرف على الفروق بين مديرى المدارس فى مهارات إتخاذ القرار التى تعزى (للنوع ، سنوات الخبرة ، المستوى التعليمى). المنهج المستخدم : المنهج الوصفى الإرتباطى عينة البحث : (200) مدير ومديرة أدوات البحث : - مقياس إدارة الذات إعداد الدکتورة / هويدة حنفى محمود - مقياس إتخاذ القرارات إعداد / الباحثة التحليل الإحصائى : تم باستخدام برنامج الحزم الإحصائية للعلوم النفسية والتربوية ، لإستخراج النتائج وإثبات فروض البحث (spss). نتائج البحث : - توجد علاقة عکسية دالة إحصائيا بين الدرجة الکلية لإدارة الذات والدرجة الکلية لمهارات اتخاذ القرار. - وجود فروق دالة إحصائيابين متوسطي درجات مديري المدارس في إدارة الذاتفى إتجاه (الذکور) . - وجود فروق دالة إحصائيابين متوسطي درجات مديري المدارس في متغير إدارة الذات تعزى لعدد سنوات الخبرة (مرتفعة- منخفضة) فى إتجاه مرتفعي الخبرة. -عدم وجود فروق دالة إحصائيا بين متوسطي درجات مديري المدارس في إدارة الذات تعزى للمستوى التعليمي (مؤهل عالي- مؤهل متوسط) . - وجود فروق دالة إحصائيابين متوسطي درجات مديري المدارس في الدرجة الکلية لإتخاذ القرار فى(المهارات الشخصية - المهارات الإجتماعية) فى إتجاه (الذکور). -عدم وجود فروق دالة إحصائيابين متوسطي درجات مديري المدارس في (المهارات الإدارية–حل المشکلات) تعزى للنوع (ذکور-اناث). - وجود فروق دالة إحصائيابين متوسطي درجات مديري المدارس في الدرجة الکلية لمهارات اتخاذ القرار و(المهارات الشخصية) فى إتجاه مرتفعى الخبرة . -عدم وجود فروق دالة إحصائيا بين متوسطي درجات مديري المدارس في (المهارات الإدارية - المهارات الإجتماعية- حل المشکلات) تعزى لعدد سنوات الخبرة (مرتفعة- منخفضة). - عدم وجود فروق دالة إحصائيا بين متوسطي درجات مديري المدارس في مهارات اتخاذ القرارتعزى للمستوى التعليمى (مؤهل عالى – مؤهل متوسط) . Research aims : - To reveal the relationship between self-management and decision-making among school principals. - Disclose the differences between the principals of schools in self-management that are attributed (for gender, years of experience, educational level). - Detecting the differences between school principals in the decision-making skills that are attributed to (gender, years of experience, educational level). -Design a tool to measure decision-making skills for school principals. The curriculum used: the descriptive approach Research sample: (200) male and female managers Research tools : -Self Management Scale prepared by Dr. / Huwaida Hanafi Mahmoud - Decision making scale prepared / researcher Statistical analysis: Using the statistical packages program for psychological and educational sciences, to extract the results and prove the research hypotheses (spss). Research results : -There is a statistically significant inverse relationship between the overall score for self-management and the overall score for decision-making skills. - There are statistically significant differences between the average scores of school principals in self-management towards (males). - There are statistically significant differences between the average scores of school principals in the self-management variable due to the number of years of experience (high - low) towards those with high experience. -There were no statistically significant differences between the average scores of school principals in the knowledge management of the educational level (high qualification - intermediate qualification). - There are statistically significant differences between the average scores of school principals in the total degree for decision-making in (personal skills - social skills) towards (males). - There were no statistically significant differences between the average scores of school principals in (administrative skills - problem solving) due to gender (male - female). - There are statistically significant differences between the average scores of school principals. -There are no statistically significant differences between the average scores of school principals in (administrative skills - social skills - problem solving) due to the number of years of experience (high - low). - There were no statistically significant differences between the average scores of school principals in decision-making skills due to the educational level (high qualification - intermediate qualification).

The Level of Community Cohesiveness Under Psychological Pressure and Control Center for Emerging Football Players U17

Summary The objective of this study is to know the level the group cohesiveness and the type of relationship between it and the psychological pressure and control center for emerging footballers under the 17 years. The descriptive approach of the study was based on a sample of 70 young footballers between the ages of 15 – 17 years of the professional Algerian championship who are still studying. The measurement of cohesiveness of the group, consisting of 34 phrases divided into four dimensions, was used on 5 dimensions, and on the scale of the center control the internal and external consists of 20 phrases. We found an average level of group cohesiveness in all dimensions and in the total score of the group cohesiveness scale with mean and standard deviation estimated at (118.5 ± 13.13), high level of psychological stress and total degree of psychological stress with mean and standard deviation of 163.38 ± 10.67). The average level in the remote control center and high in the external control center, there is a statistically significant correlation between group cohesiveness and psychological stress, and a statistically significant correlation between the cohesiveness of the group and both the internal control center and the external control center. The psychological pressures negatively affect the cohesiveness of the group while the control center with its both sides the internal and external does not affect the cohesiveness of the group.

Effectiveness of The Educational Leadership Program in Developing Professional and Leadership Competencies of Secondary School Principals In Wadi Al-Seer District, Jordan: فاعلية برنامج القيادة التعليمية في تنمية الكفايات المهنية والقيادية لدى مديري المدارس الحكومية في لواء وادي السير في الأردن

The aim of study to revel the Effectiveness of The Educational Leadership Program in Developing Professional and Leadership Competencies of Secondary School Principals in Wadi Al-Seer District, Jordan. The study based on the description approach which based on the descriptive method researcher used a questionnaire which consist of (51) items to analyze and process data divided into four areas. The total degree of Education Leadership Program of areas directorate principals was high. study population was composed of all principals (68) which account for all the principals of secondary schools of The In Wadi Al-Seer District study sample consist of(20) male principals and(40) female principals .This sample was chosen randomly. The result showed that the level of Effectiveness was high and The finding also showed there are no statistically significant differences between the level of principals sex (male and female) in addition there were statistically significant differences between principals of (less than 5 years) of experience and these with (10 and more) years of experience in favor of the second group and statistically significant differences between teachers of (10+) years of experience and these with (10 and more) years of experience in favor of the second group. In light of these findings the researcher suggested a set of recommendations including the necessity of considerate the years of experience of principals during evaluation and take advantage of the educational leadership program to select principals to the scale of educational leadership effectiveness.

H-Bernstein basis functions over a triangular domain

In this paper, we introduce and study new h-Bernstein basis functions over a triangular domain. In particular, after defining the h-Bernstein polynomial functions of degree n, we prove their algebraic and geometric properties, such as partition of unity and degree elevation and we show that they form a basis for the space of polynomials of total degree less than or equal to n on a triangle. Then, we propose the h-de Casteljau algorithm and we prove the Marsden identity.

Synthesis and nondestructive detailed structure characterization of carboxymethyl xylan from bagasse

Carboxymethyl xylan (CMX) was synthesized and characterized. A method based on quantitative 13C NMR was developed to obtain detailed structural information. The total degree of substitution (DS), partial DS at 2- and 3-O-positions, and the quantitation of each unit in CMX could be acquired simultaneously by this method without decomposing the polymer backbone, thus avoiding errors caused by polymer hydrolysis with traditional methods using HPLC and 1H NMR spectrometry. Moreover, different from methods of direct detection of carboxyl groups, such as acidometric and potentiometric titrations, this method was not affected by probable impurity introduced during carboxymethylation.

Estudio prospectivo de los factores asociados al delirium en el postoperatorio de la cirugía abdominal urgente

IntroductionDelirium is a frequent complication in elderly patients after urgent abdominal surgery. MethodsProspective study of consecutive patients aged ≥65years who had undergone urgent abdominal surgery from 2017-2019. The following variables were recorded: age, sex, ASA, physiological state, cognitive impairment, frailty (FRAIL Scale), functional dependence (Barthel Scale), quality of life (Euroqol-5D-VAS), nutritional status (MNA-SF), preoperative diagnosis, type of surgery (BUPA Classification), approach and diagnosis of postoperative delirium (Confusion Assessment Method). Univariate and multivariate analyses were performed to analyze the correlation of these variables with delirium. ResultsThe study includes 446 patients with a median age of 78years, 63.6% were ASA ≥III and 8% had prior cognitive impairment. 13.2% were frail and 5.4% of the patients had a severe or total degree of dependence. 13.6% developed delirium in the postoperative period. In the univariate analysis, all the variables were statistically significant except for sex, type of surgery (BUPA) and duration. In the multivariate analysis the associated factors were: age (P<.001; OR: 1,08; 95%CI: 1,038-1,139), ASA (P=.026; OR: 3.15; 95%CI: 1.149-8.668), physiological state (P<.001; OR: 5.8; 95%CI: 2.176-15.457), diagnosis (P=.006) and cognitive impairment (P<.001; OR: 5.8; 95%CI: 2.391-14.069). ConclusionThe factors associated with delirium are age, ASA, physiological state in the emergency room, preoperative diagnosis and prior cognitive impairment.

الذکاء الروحى وعلاقتة بالصبر لدى عینه من معلمات مرحلة التعلیم الأساسى

- إستهدفت الباحثة الحالية دراسة العلاقة بين الذکاء الروحى والصبر لدى معلمات مرحلة التعليم الأساسى وذلک فى ضوء متغير الخبرة التدريسية ( أقل من 5 سنوات-من5إلى 10 سنوات –أکثر من 10 سنوات ) وتکونت عينة الدراسة الأساسية من (200) معلمة واستخدم فى الدراسة مقياس الذکاء الروحى (من إعداد الباحثة), ومقياس الصبر ( إعداد : بشرى إسماعيل ,2016) وتوصلت الباحثة من خلال البحث الحالى إلى عدم وجود علاقة ارتباطية دالة إحصائيا بين الذکاء الروحى والصبر على مستوى الدرجة الکلية وجميع الأبعاد , فيما عدا بعد حدود الصبر فقد وجدت علاقة ارتباطية سالبة بينه وبين الدرجة الکلية للذکاء الروحى. .واختلفت النتائج بين المعلمات على مقياس الذکاء الروحى والصبر والتى تعزى إلى متغير الخبرة التدريسية ( أقل من 5 سنوات / من 5 سنوات إلى 10 سنوات / أکثر من 10 سنوات ) سواء على مستوى الأبعاد والدرجة الکلية. The resercher aimed to finding out the relationship between the spiritual intelligence and patience for a sample of female teachers ofBasic Education Stage ,in light of Teaching Experience ( less than 5 years - from 5 to 10 years – more than 10 years) . The main sample consisted of 200 females teachers of Basic Education Stage. The spiritual intelligence scale and patience scale were used in the main research sample .the researcher reached several findings ; the most important of which are: there is not statistically _significant correlation between The spiritual intelligence and patience on the level of dimension and total degree .the results differed among the three groups on the scale of spiritual intelligence and patience on the level of dimension and total degree.

التنمر الزواجى وعلاقته بالاحتراق النفسى لدى المرأة

يهدف البحث الحالى إلى دراسة العلاقة بين التنمر الزواجى والاحتراق النفسى لدى المرأة وکذلک التنبؤ بالاحتراق النفسى لدى المرأة من خلال بعض أبعاد التنمر الزواجى والتعرف على تأثير عاملى (العمل، مدة الزواج) والتفاعل بينهما فى تأثيرهما المشترک على التنمر الزواجى والاحتراق النفسى لدى المرأة. والتعرف أيضا على الديناميات النفسية لمرتفعى الاحتراق النفسى والتعرض للتنمر الزواجى وتکونت عينة الدراسة من (210) سيدة منهم 125 سيدة عاملة، 85 ربة منزل وتنوعت مهن السيدات العاملات ما بين طبيبة، مدرسة، مهندسة، ممرضة، إدارية، أستاذة جامعية وتم اختيار العينة من الريف والحضر وتراوحت أعمارهم ما بين (20، 67) عاما بمتوسط حسابى (40.5) انحراف معيارى (10.12) أما عن أدوات الدراسة فکانت کالآتى: مقياس التنمر الزواجى (إعداد الباحثة) مقياس الاحتراق النفسى لدى المرأة (إعداد الباحثة)، استمارة دراسة الحالة (إعداد الباحثة) اختبار ساکس لتکملة الجمل الناقصة (اعداد جوزيف ساکس وترجمه أحمد سلامه 1970). وأما عن نتائج الدراسة فکانت کالآتى:  وجود علاقة ارتباطية ذات دلالة إحصائية بين التنمر الزواجى والاحتراق النفسى لدى المرأة.  ينبئ بعدا (التنمر اللفظى، التنمر الانفعالى) کأبعاد أساسية للتنمر الزواجى لدى المرأة دون غيرها بالدرجة الکلية للاحتراق النفسى بنسبة مساهمة 59%، 30% على التوالى.  لا توجد فروق ذات دلالة إحصائية بين (السيدات العاملات، غير العاملات ربات البيوت) فى الدرجة الکلية للتنمر الزواجى.  يوجد تأثير دال إحصائيا لعاملى العمل (تعمل، لا تعمل) ومدة الزواج (10 سنوات فأقل، 11- 20 سنة، 21 سنة فأکثر) والتفاعل بينهما فى تأثيرهما المشترک على الاحتراق النفسى لدى المرأة.  من أسباب التنمر الزواجى الذى تتعرض له المرأة هو ضعف الثقة بالنفس وضعف التوکيد على حقوقها وذلک طبقا للدراسة الکلينکية. Abstract: The current research (study) aims to investigate the relationship between Marital Bullying and Psychological Burnout in women, as well as (likewise) to predict the Psychological Burnout of women throughout some dimensions of Marital Bullying. It also aims to identify the effect of two factors (work and marriage duration) and the interaction between them in their joint impact on Marital Bullying and Psychological Burnout in Women. This study also reveals the psychological dynamics of high Burnout and the psychological characteristics of those who have been subjected to Marital Bullying. The study sample (the sample of the study) consisted of (210) women, including (125) working women, (85) housewives. Women's jobs (professions) are varied from a doctor, a teacher, an engineer, a nurse, an administrative employee (administrator/‎Scribe), and a university professor. The sample was chosen (selected) from rural and urban areas, and their ages ranged between (20:67) years, with a mean (40.5) and a standard deviation (10.12).As for the study tools, they were as follows: Marital Bullying scale (prepared by the researcher),Case Study Form (prepared by the researcher),The Sacks Sentence Completion Test (SSCT). As for the results of the study, they were as follows:  There is a statistically significant correlation between Marital Bullying and Psychological Burnout in women.  Two dimensions of marital bullying, verbal bullying and emotional bullying , as the main dimensions of marital bullying in women, only predict the total degree of psychological burn with a contribution of 59% and 30%, respectively.  There are no statistically significant differences between (working women and non-working women (housewives) in the total (overall) degree of marital bullying.  There is a statistically significant effect of the two factors, the work (working, not working) and the marriage duration (10 years or less, 11-20 years or more), and the interaction between them in their joint effect on women's psychological burnout.  According to the results of the clinical study, among the causes (the etiology) of Marital Bullying that women are exposed to, is the lack of self-confidence (poor self -confidence) and the A defect in assertiveness when it comes to claiming rights.

حب الاستطلاع العلمي وعلاقته بالتفكير التخيلي لدى الطالبات الموهوبات بالمرحلة الثانوية بمدينة الباحة

هدفت الدراسة إلى الکشف عن درجة حب الاستطلاع العلمي وعلاقته بالتفکير التخيلي لدى الطالبات الموهوبات بالمرحلة الثانوية بمنطقة الباحة، وأتبعت الدراسة المنهج الوصفي الارتباطي، حيث تکونت عينة الدراسة من الطالبات الموهوبات بالمرحلة الثانوية (الأول-الثاني -الثالث) بمدينة الباحة وتم اختيار(92) طالبة موهوبة بطريقة عشوائية، وتمثلت أداتي الدراسة في مقياسين: حب الاستطلاع العلمي والتفکير التخيلي. وقد تم التأکد من الخصائص السيکومترية لأداتي الدراسة من الصدق والثبات بتطبيقها على عينة استطلاعية تکونت من(35) طالبة من خارج عينة الدراسة الأصلية. وأظهرت نتائج الدراسة أن درجة حب الاستطلاع العلمي لدي الطالبات الموهوبات بالمرحلة الثانوية مرتفعة، حيث بلغ المتوسط (2.35)، وانحراف معياري (0.61). کما أظهرت النتائج أن التفکير التخيلي لدى الطالبات الموهوبات بالمرحلة الثانوية بدرجة مرتفعة، بمتوسط قدره (2.37)، وانحراف معياري (0.62). أظهرت النتائج وجود علاقة ارتباطيه دالة إحصائيا عند مستوى(0.01) بين حب الاستطلاع العلمي ودرجات کل من (بدء الخيال، وتصور الخيال، وتحويل الخيال، والدرجة الکلية للتفکير التخيلي) لدى الطالبات الموهوبات بالمرحلة الثانوية. وأظهرت النتائج عدم وجود فروق دالة إحصائيا لدي الطالبات الموهوبات بالمرحلة الثانوية في متوسطات درجات حب الاستطلاع العلمي والتفکير التخيلي تعزى لمتغير الصف الدراسي. The study aimed to reveal the degree of curiosity and its relationship to imaginative thinking among gifted female students at the secondary stage in Al-Baha city, and the study followed the correlational descriptive approach, where the study sample consisted of gifted students in the secondary stage (first-second-third) in Al-Baha city and (92) female students were selected Talented randomly, the study tools consisted of two scales: curiosity and imaginative thinking. The psychometric properties of the study scales of validity and reliability were confirmed by applying them to a survey sample consisting of (35) students from outside the original study sample. The results of the study showed that the degree of curiosity among gifted female students at the secondary level is high, with an average (2.35) and a standard deviation (0.61). The results also showed that the imaginative thinking of gifted female students at the secondary level was high, with an average of (2.37) and a standard deviation (0.62). The results showed that there is a statistically significant correlation relationship at the level (0.01) between the curiosity and the degrees of (starting imagination, imagination visualization, transforming imagination, and the total degree of imaginative thinking) among gifted students at the secondary level. The results showed that there were no statistically significant differences among gifted female students at the secondary level in the mean of degrees of curiosity and imaginative thinking due to the class variable.

The Effect of the Nature of the Job on Job stability: Applied study on the employees of the General Directorate of Health Affairs in Assir Region: أثر طبيعة الوظيفة على الاستقرار الوظيفي: دراسة تطبيقية على العاملين بالمديرية العامة للشئون الصحية بمنطقة عسير

The study aimed to detect the effect of the nature of the job (temporary- permanent) on the job stability of the employees of the general directorate of Health Affairs in Assir region, as well as to identify the differences between these employees according to the variables ((Nature of the job – type/sex- age- academic qualification- years of experience- career status). The study used the descriptive analytical method in this research. The researcher prepared a questionnaire as a tool for study, which included the demographic data of the workers and two presidents. The first is the nature of the job and its paragraphs (11) and the second represents the stability of the career and paragraphs (17) paragraph. After the questionnaire was applied to the study sample, the data was obtained and processed and analyzed statistically by the Statistical Packages for Social Sciences (SPSS) program. The study found statistically significant differences between the averages of permanent and temporary employees in the total degree of career stability for permanent employees, where the average permanent employees were higher than the average of temporary employees. There were also no statistically significant differences between the averages of temporary employees in the total degree of job stability due to differences in gender (males and females). Also, there were no statistically significant differences in job stability due to job status, nor were there any differences in job stability between the general employee and managers. There were also no differences in job stability among temporary employee, depending on the difference in the academic qualification. The value of "P" was not statistically significant. There were also no differences in the functional stability of the temporary employee, depending on the difference in years of experience. The value of "P" was not statistically significant. There were also no differences in the functional stability of the temporary employee according to the difference in age, where the value of "P" was not statistically significant. The study recommended the necessity of providing the basic needs of temporary employees for the purpose of informing them of safety and job stability, while providing them with material and moral incentives in order to increase their association with the labor institution and thus ensure their job stability.

Problems Facing Schools Run by Yatta Directorate of Education from Teachers' Point View: المشكلات التي تواجه المدارس في مديرية التربية والتعليم "يطا" في محافظة الخليل من وجهة نظر المعلمين

The present study aims at identifying the problems facing schools run by Yatta directorate of education from teachers' point view. To measure the problem's tool, the researchers has applied the descriptive analytical strategy on a sample of 116 male &amp; female teachers employed in the schools of Yatta directorate of education during the first semester of the scholastic year 2018/-2019. The total degree of the tool shows (3.26) on average whereas the school administration-related problems show an average of (3.19) with a deviation of (0.74). Meanwhile, school physical environmental problems have (3.06) on average with a deviation of (0.72). In addition, teacher-related school problems show an average of (21.3) with a deviation of (0.77). However, the student-related problems have an average of (3.55) with a deviation of (0.87). Finally, curriculum-related problems show an (3.48) on average with a deviation of (0.96). Consequently, the study concluded with a group of recommendations primarily taking the appropriate procedures to decline directorial problems.

A new collocation method using near-minimal Chebyshev quadrature nodes on a square

A new collocation method using near-minimal Chebyshev quadrature nodes is proposed on the square [−1,1]2. For a (total) degree of precision 2n−1, the number of nodes of this near-minimal quadrature rule amounts only to n(n+1)2+⌊n2⌋+1, which is one more than the Möller's lower bound, n(n+1)2+⌊n2⌋, i.e., the minimal number of nodes in a quadrature rule of degree 2n−1 in two dimensions. Firstly, a new Chebyshev interpolation based on the near-minimal Chebyshev quadrature rule is constructed. An optimal error estimate on the new interpolation is obtained, and fast algorithms for the corresponding discrete Chebyshev transformation (DCT) between the function values and the discrete Chebyshev coefficients are then devised. Next, spectral differentiation schemes are developed both in the physical space and in the frequency space. Finally, a new Chebyshev collocation method, which uses nearly half nodes of the tensorial Chebyshev collocation method, is proposed to solve second order partial differential equations on the square. Numerical experiments illustrate that our new Chebyshev collocation method also possesses an exponential order of convergence for smooth problems. In comparison to the tensorial collocation method, it can offer better accuracy for most problems with the same degrees of freedom.

The Range of the physical Education Importance Perception From the Views of Normal and Gifted Students Views

The main goal of this study is to investigate the importance of sport activities from the gifted and normal students' point of views. This study used the descriptive analytical method, where the two researchers improved the questionnaire to measure the level of the sport activities' importance among the gifted and normal students, the questionnaire consisted of (30) paragraphs with five-digit grade on Likert Scale, applied on (370) normal and gifted students. The data of the questionnaire were analyses by using averages, standard deviations, and T-test. The results of this study indicated that the gifted and normal students' awareness level of the physical education was high, and there were statistically significant at the significant level (a≥ 0.05) due to the impact of level in all field and the total degree, except the second field, and the differences were in favor of primary level. Also, there were statistically significant differences at significant level (a≥ 0.05) due to the academic achievement in all fields and the total degree, and the differences were in favor of the gifted students.

The Psychometric Characteristics of the Renzulli Scale of Behavioral Characteristics (3rd Edition) in the Detection of Gifted Students in the Age Group (12-18) in Jordan

This study aimed at checking the effectiveness of Renzulli Scale for Rating the Behavioral Characteristics (3rd Ed.) of Gifted Students aged from (12 – 18). In order to achieve the goal, the scale was translated and prepared in its final form. The Sample of the study consisted of (478) students. (304) of them are normal and (174) are gifted. Making sure of reliability of significance of the scale was through content validity where the percentage of the reviewers was between (80 – 100%). Also The factor validity showed that correlation coefficient was high and strong at the same time the concurrent validity was counted between Renzulli Scale for the behavioral characteristics and TONY Test where the correlation coefficient was (0.389). Correlation coefficient between Renzulli Scale and Torrance test (0.475) which is the discrimination index between normal and gifted reached correlation coefficient between the item and the sub domain (0.44 – 0.59). At the same time checking of the significance of the reliability of the scale by reliability of assessors (0.89) in total degree, and Cronbach alpha internal consistence where it reached on the whole degree (0.99). Which means high significant in general.

Protein Dynamics and the Folding Degree.

The analysis of folding trajectories for proteins is an open challenge. One of the problems is how to describe the amount of folded secondary structure in a protein. We extend the use of Estradas' folding degree (Bioinformatics 2002, 18, 697) for the analysis of the evolution of the folding stage during molecular dynamics (MD) simulation. It is shown that residue contribution to the total folding degree is a predominantly local property, well-defined by the backbone dihedral angles at the given residue, without significant contribution from the backbone conformation of other residues. Moreover, the magnitude of this residue contribution can be quite easily associated with characteristic motifs of secondary protein structures such as the α-helix, β-sheet (hairpin), and so on by means of a Ramachandran-like plot as a function of backbone dihedral angles φ,ψ. Additionally, the understanding of the free energy profile associated with the folding process becomes much simpler. Often a 1D profile is sufficient to locate global minima and the corresponding structure for short peptides.

Obtaining hollow semi-finished products from copper alloys for electrical applications by screw rolling method

The article proposes a process for obtaining semi-finished products in the form of pipes made of copper alloys for electrical applications using the screw rolling method. The paper presents the results of experimental piercing and rolling of pipe samples made of Cu–0.75Cr copper alloy billets with a diameter of 45 mm. The 43.5×10.0 mm samples obtained after piercing using a two-roll screw rolling mill had exact geometrical dimensions: outer diameter deviation at the front end was up to 1 %, at the back end – up to 2.4 %; relative variation in wall thickness at the front end was 0.3÷0.5 %, at the rear end – 0.5÷1.0 %. Then pierced pipe samples were rolled using a three-roll radial-shear rolling (RSR) mini mill with a different total degree of reduction – samples were obtained with an outer diameter of 30, 25 and 18 mm. The reduction process was analyzed from the point of view of internal hole stability and deformation. In case of 30 % relative reduction of the outer diameter, rolling without a mandrel is accompanied by wall thickening. In this case, inner diameter deviations are within acceptable limits. The experiments on obtaining samples from the Cu–0.75Cr alloy by screw piercing and reduction in the RSR mill show that this scheme can be implemented in principle in industry. At the same time it is necessary to define more exactly deformation parameters (degree of deformation, choice of reduction scheme) to obtain a quality product. Various options for heat treatment (HT) of the obtained pipe samples and the effect of the HT method on electrical conductivity and hardness are considered. Samples after piercing had a conductivity of 59.3 % IACS. The maximum electrical conductivity of 76.7 % IACS was obtained on samples after quenching from a temperature of 1020 °C and aging at 450 °C for 3 h. The results of the work show the fundamental possibility of obtaining semi-finished products from copper alloys for electrical purposes using the screw rolling method.

Predicting Swallowing Outcomes from Objective Videofluoroscopic Timing and Displacement Measures in Head and Neck Cancer Patients.

Radiation therapy with or without chemotherapy compromises swallowing efficiency and safety in patients with head and neck cancer (HNC). The resulting dysphagia leads to overall morbidity, with altered diets, reduced nutritional intake, reduced quality of life, and potential interruption of curative cancer treatment. Despite well-documented radiation-related changes in swallowing physiology, scarce research exists on the potential clinical value for measurements of swallowing timing and displacement in this population. This study investigated the discriminatory value of quantitative timing and displacement parameters for the Functional Oral Intake Scale and Penetration Aspiration Scale scores using pre- and post-radiation videofluoroscopy data. Swallowtail Software Version 1 (Belldev Medical, Arlington Heights, IL) was used to obtain objective timing and displacement measurements from the pre- and post-radiation videofluoroscopy data for 31 patients who underwent radiation therapy, with or without chemotherapy, for head and neck cancer. The total pharyngeal transit time (BP2) (p < 0.000, r = 0.43) in pudding bolus trials and the maximal upper esophageal sphincter opening (PESMax/cm) (p = 0.001, r = 0.31) in thin bolus trials were discriminatory for Functional Oral Intake Scale (FOIS). Findings suggest that measurement of post-radiation changes using objective and quantitative parameters may offer some discriminatory value regarding future dysphagia risk and prognosis based on total pharyngeal transit time and degree of UES opening. In addition, the results suggest that different bolus types may offer different discriminatory values in HNC population, and that some timing and displacement variables may have discriminatory value for patients' diet levels independent from any aspiration risk.

Health Awareness Among Diabetes Patients in AL Hassa Region Towards The Risk Factors Associated With Diabetes Management: A Field Study in Medical Sociology: الوعي الصحي لدى مرضى السكري في منطقة الأحساء بعوامل الخطورة المرتبطة بإدارة المرض: دراسة ميدانية في علم الاجتماع الطبي

The study aimed to explore the degree of health awareness among Diabetes patients in AL Hassa region towards the risk factors associated with diabetes management related to: (personal and health habits, nutrition, treatment and medication, psychosocial and social aspects). To achieve this goals, a descriptive analytical approach was followed, the questionnaire was used as a tool for data collection, and the study applied to a sample of (220) male and female patients with diabetes mellitus over 15 years in the community of AL Hassa. The results showed that the degree of health awareness among Diabetes patients in AL Hassa region towards the risk factors associated with diabetes management was came with a mean of (3.35), a standard deviation (0.923), and with a (medium) degree of health awareness, where the field of (awareness of risk factors related to the psychosocial and social aspects) came first, followed by the field of (awareness of risk factors related to the personal and health habits), followed by the field of (awareness of risk factors related to the nutrition), followed in the last rank by the field of (awareness of risk factors related to the treatment and medication), with means of (3.14, 3.17, 3.43, 3.69), respectively. Also there were a statistically significant differences found at the significance level of (0.05) in the degree of health awareness among Diabetes patients in AL Hassa region towards the risk factors associated with diabetes management attributed to the variable of (gender), in both total degree and first field, and in favor of males, while there were no Statistically significant differences found attributed to the variables of: (age, and educational level), in the total score, and all four fields. The study made some recommendations, the most important of which are: Holding educational seminars in hospitals and health centers to spread health awareness among diabetics about the risk factors related to the disease management, especially the risk factors related to the treatment, medicine and nutrition.