Assessments of Process Parameters on Cutting Force and Surface Roughness during Drilling of AA7075/TiB2 In Situ Composite

Reinforced aluminum composites are the basic class of materials for aviation and transport industries. The machinability of these composites is still an issue due to the presence of hard fillers. The current research is aimed to investigate the drilling topographies of AA7075/TiB2 composites. The samples were prepared with 0, 3, 6, 9 and 12 wt.% of fillers and experiments were conducted by varying the cutting speed, feed, depth of cut and tool nose radius. The machining forces and surface topographies, the structure of the cutting tool and chip patterns were examined. The maximum cutting force was recorded upon increase in cutting speed because of thermal softening, loss of strength discontinuity and reduction of the built-up-edge. The increased plastic deformation with higher cutting speed resulted in the excess metal chip. In addition, the increase in cutting speed improved the surface roughness due to decrease in material movement. The cutting force was decreased upon high loading of TiB2 due to the deterioration of chips caused by fillers. Further introduction of TiB2 particles above 12 wt.% weakened the composite; however, due to the impact of the microcutting action of the fillers, the surface roughness was improved.

The Prophetic Approach in Increasing Religious Concepts among Primary School Students through Educational Activities: المنهج النبوي في زيادة المفاهيم الدينية لدى طلبة المرحلة الأساسية من خلال الأنشطة التعليمية

This study aimed to identify the prophetic approach and its effect on increasing religious concepts in the subject of education, (the number of its students reached (40) students from the fifth basic class students in my school (a student and a preliminary school for students) (20 students), and this study indicated a methodology Semi-experimental research, and two groups were chosen from the experimental group and taught through educational activities for the concepts of Islamic education and the controlled curriculum, and they were taught according to the usual method, by 20 students per group. The results of the study were effective for students who were taught according to scientific activities and modern methods. It was found that there were statistically significant differences (α=0, 05) in learning skills in scientific activities at the basic stage for sixth-graders in basic science to learn in the usual way, it was in the interest of the group that learned about the scientific activities, and in light of the results, the study recommended that scientific activities should be activated according to modern methods, especially in the science subject in Zarqa Governorate. The study also recommended a training contract for male and female teachers in order to develop learning skills through activities.

PELATIHAN BAHASA INGGRIS BERBASIS DARING DENGAN KONSEP MENTORING DAN TUTOR TEMAN SEBAYA

The globalization and disruption era creates effects for the human being; one is the connection between people without boundaries. This thing also brings up the importance of English language usage. This community service was conducted through online English training, which consists of 8 meetings between June-July 2020. The training includes 1 mentor and 3 participants. The initial assessment was conducted to know the participants’ abilities and categorize them into Basic, Intermediate, Advanced classes. This training was categorized in the Basic class. Each meeting was divided into three sessions, which enable the mentor and participants to have conversations with each other. This training uses Conversation Method. The participants were excited, which can be seen by the 87.5 % participatory rate. The final assessment shows an improvement for the participants’ English capability, and they can continue to Intermediate class.

Exploring cyclic networks of multisite modification reveals origins of information processing characteristics

Multisite phosphorylation (and generally multisite modification) is a basic way of encoding substrate function and circuits/networks of post-translational modifications (PTM) are ubiquitous in cell signalling. The information processing characteristics of PTM systems are a focal point of broad interest. The ordering of modifications is a key aspect of multisite modification, and a broad synthesis of the impact of ordering of modifications is still missing. We focus on a basic class of multisite modification circuits: the cyclic mechanism, which corresponds to the same ordering of phosphorylation and dephosphorylation, and examine multiple variants involving common/separate kinases and common/separate phosphatases. This is of interest both because it is encountered in concrete cellular contexts, and because it serves as a bridge between ordered (sequential) mechanisms (representing one type of ordering) and random mechanisms (which have no ordering). We show that bistability and biphasic dose response curves of the maximally modified phosphoform are ruled out for basic structural reasons independent of parameters, while oscillations can result with even just one shared enzyme. We then examine the effect of relaxing some basic assumptions about the ordering of modification. We show computationally and analytically how bistability, biphasic responses and oscillations can be generated by minimal augmentations to the cyclic mechanism even when these augmentations involved reactions operating in the unsaturated limit. All in all, using this approach we demonstrate (1) how the cyclic mechanism (with single augmentations) represents a modification circuit using minimal ingredients (in terms of shared enzymes and sequestration of enzymes) to generate bistability and oscillations, when compared to other mechanisms, (2) new design principles for rationally designing PTM systems for a variety of behaviour, (3) a basis and a necessary step for understanding the origins and robustness of behaviour observed in basic multisite modification systems.

Evaluation of the Book of Physics for the tenth basic Class According to teachers in Ramallah and al-Bireh Governorate: تقويم كتاب الفيزياء للصف العاشر الأساسي من وجهة نظر المدرسين في محافظة رام الله والبيرة

The research aims at (Evaluation of the Book of Physics for the Tenth Basic Class According to Teachers). To achieve that, the researcher used the questionnaire as the instrument of this study, and which was applied on purpose sample of (46) teacher with percentage 33% from the teacher’s community in Ramallah and al-Bireh Governorate public and private schools. The results revealed moderate positive evaluation as the percentage of evaluation for the total score was (63.8%). The order of the sixth domains of book was (language and general layout, aims, evaluation methods, increasing attitudes, learning methods, and content) as descending order. The general percentage to provide every domain in the Science Book for Tenth Grade was (67.2%, 67%, 66.6%, 65.8%,62.8%,61.8%) as descending order. And there were significant differences at (α=0.05) due to school type and specialization. While there are no significant differences at (α=0.05) in evaluation degree due to gender, academic qualification, and experience.

KEPEMIMPINAN KEPALA PONDOK PESANTREN DALAM MENGIMPLEMENTASIKAN PROGRAM LINGKUNGAN BERBAHASA ARAB DI PONDOK PESANTREN DARUTTAUHID MALANG

Communicating using Arabic is an obligation that must be done by students at Daruttauhid Islamic Boarding School in Malang. In implementing this policy it is necessary to have a figure to emulate who can also guide, and direct the civitas in shaping the Arabic language environment so that all process activities are carried out properly and smoothly. The purpose of this study is to describe the leadership and efforts of the head of Islamic boarding school in implementing the Arabic language environment program along with its supporting and inhibiting factors. This research uses descriptive qualitative research methods, with the type of case study research, where the research location is Daruttauhid Islamic Boarding School Malang. The data is obtained directly from the head of the hut and other competent parties in the hut. The process of collecting data uses interview observation and documentation techniques which are analyzed descriptively through the editing process with the stages of data reduction, data presentation, and drawing conclusions. From the results of this study indicate that (1) The leadership of Islamic boarding school heads in Daruttauhid Islamic Boarding School in Malang in implementing Arabic language programs using the type of authoritarian leadership that can be seen in the programs and regulations of Islamic boarding schools that run in an orderly and conducive manner and and sometimes with democratic leadership it can be seen with the monthly meetings and harmonious relations between the head of the hut with the religious teachers and students.(2) The efforts of the head of the boarding school at the Daruttauhid in developing an Arabic language environment program include forming a santri organization namely language section, holding Arabic conversation, provisioning Arabic vocabulary, additional lessons for basic class, Arabic speech training, watching films in Arabic. (3) Supporting factors that can launch this Arabic-language environmental activity are the religious teachers here are the majority of Middle Eastern graduate. The inhibiting factors are facing new students who cannot speak Arabic and students who are ashamed to express their words, the mixing of Indonesian or Javanese with Arabic.

Inclusion health concepts in our Arabic textbooks for the first three grades in Jordan: تضمين المفاهيم الصحية في كتب لغتنا العربية للصفوف الثلاثة الأولى في الأردن

This study aimed to reveal the degree of inclusion of health concepts in the books of Arabic language for the first three grades in Jordan. To achieve this, the researcher analyzed the content of Arabic language books. The study used the descriptive analytical method, The study tool was developed for this purpose, where it classified the categories of health concepts into five main areas: (physical health, healthy nutrition, environmental health, psychosocial health, disease and prevention). The reliability and validity of the used tool were verified. The results showed that our Arabic language book for the third basic grade ranked first in the total number of iterations that total (366) iterations As the share of the book for the third basic class reached (171) repetitions, and after it came the book for the second basic class, when it reached (102) repetitions, and after it came the book of the primary first grade (93) repetitions. The study recommended that Our Arabic language books for grades (first, second, and third) include health concepts that came in low rates or did not have any repetition, such as concepts of non-communicable diseases, methods of disease transmission, avoiding violence, and air pollution and further studies be conducted to identify health concepts in books and other academic stages.