830 research outputs found
A refined CLNA model in fretting fatigue using asymptotic characterization of the contact stress fields
No full textUsing the Atzori-Lazzarin criterion, the first author has recently proposed a unified model for fretting fatigue (FF), called the crack-like notch analogue (CLNA) model. Two possible types of behaviour were suggested: either 'crack-like' or 'large blunt notch,' and these are immediately studied in the typical condition of constant normal load and in phase oscillating tangential and bulk loads. The former condition ('crack-like') was treated by approximating the geometry to the perfectly flat one of the crack analogue (CA), improved in some details, reducing all possible geometries to a single contact problem. The latter ('large blunt notch'), with a simple peak stress condition i.e. a simple notch analog-Lie model. In the present paper, the calculation of the 'crack-like' behaviour is unproved using the recent asymptotic characterisation developed by Dini, Hills and Sackfield, which extracts the asymptotic singular stress field of the fretting contact. A significant difference is found in the 'equivalent' geometric factor obtained for the Hertzian geometry, particularly near full sliding, where the new criterion is more conservative, but still not large enough to permit to find, for example in Nowell's FF experimental data, if the refinement is an improvement of predictive capabilities. In flatter geometries, the difference is expected to be even smaller than in the case of the Hertzian geometry, and in this case, the original CLNA model, for its simplicity, remains a very convenient simple closed form criterion
Penerapan keterampilan bertanya mahasiswa untuk stimulasi keterampilan berpikir tingkat tinggi (HOTs) anak TK
Full text linkQuestioning skills need to be mastered by the student-teacher of kindergarten. Questioning skills consist of asking advanced questions (high-level questioning skills) and basic questioning questions. High-level thinking is a way of thinking based on facts and concepts to direct the mindset of children, giving value, finding, and interpreting solutions to problems. The purpose of this research is to describe the basic questioning skills (LOTIs) and advanced questioning skills (HOTs) of the student-teacher of kindergarten in micro-teaching courses. This type of research is qualitative descriptive using case studies. The research subjects consisted of 4 students who took the micro-teaching course in the Department of Early Childhood Education, STKIP Adzkia Padang. The object of the study consisted of further questioning skills used by kindergarten students when teaching practice in lectures for 3 months consisted of 1) cognitive level questions, 2) ordering order arrangement, 3) using of tracking questions, 4) increasing interaction. Data collection techniques were carried out with the study of documentation and direct recordings of data analysis techniques with simple percentages and were converted according to the scale of interpretation so that the research conclusions were obtained. The application of students' questioning skills during teaching practice was dominated by LOTs questions, which were limited to questions of knowledge level just to remember
Model Quantum Teaching Tipe Tandur Terhadap Keterampilan Kolaborasi Mahasiswa
Full text linkOne type of 21st-century skills that needs to be developed is collaboration skills. There were many problems found in the observation. They were student collaboration skills that were lacking in the ability to discuss well, agree with each other; carry out roles, responsibilities and work productively in groups; and there needs to be mutual respect in the lecture process. Efforts to apply and familiarize 21st-century skills, especially in collaboration skills, this research uses the Tandur type of quantum teaching-learning model. The purpose of this study was to see the effect of the Tandur type of quantum teaching model on the collaboration skills of STKIP Adzkia students in learning basic science concepts. The type of research used is quasi-experimental research. This research was given different treatment to the two sample classes. This research design is classified as a randomized control group-only design. The results showed that the data were not normally distributed and homogeneous, so the Mann Whitney test was carried out and the probability value was 0.05 with an asymsig value (2 tails) of 0.475, so H0 was accepted. This research concludes that there is no significant effect of the quantum teaching model of the Tandur type on the collaboration skills of STKIP Adzkia students in learning basic science concepts
PERBANDINGAN HASIL BELAJAR SISWA MENGGUNAKAN MODEL CONTEXTUAL TEACHING AND LEARNING (CTL) DAN INKUIRI
Full text linkEffective learning processes have an effect on good learning outcomes. Based on what is observed from student learning outcomes in the teaching and learning process, especially science is still below the minimum completeness level (KKM). This is because the processes that occur in science learning are less meaningful because they have not included students in the process of discovery and generate knowledge from their daily activities, students are not accustomed to solving their own problems and lack of linking teaching materials with students' daily lives. This type of quasi-experimental research with a design from The Static Group Comparison Design is to introduce treatments that are not the same between the two groups ". Then a t-test is performed. Based on the t-test analysis obtained thitung1,398 and ttable = 15. So that it was found that student learning outcomes by applying the CTL model did not differ significantly from students who applied the Inquiry mode
The Influence of Jigsaw Type Cooperative Models on Communication Skills of Elementary School Students
Full text linkThis research is motivated by the low student communication skills caused by 1) when learning, students have not been able to convey their ideas either when discussing with friends, presentations, or when solving problems in learning; 2) students are shy to ask questions, tend to be silent, and when learning takes place the attention of students is not focused on learning or the other person; 3) students who are less academic yet able to convey the essence of learning if asked to become a tutor. This study aims to determine the impact of jigsaw on the communication skills of fourth-grade students at SDN 22 Kuranji Padang. This type of research is Pre-Experimental Design. The results of this study were obtained µ1 <µ2, (67.66 <82.05), with a significance of N-Gain 0.45 in the medium category. Then Ha is accepted. From the results of this study, it was proven that jigsaw had a significant impact on the communication skills of fourth-grade students of SDN 22 Kuranji, Padang cit
DINI and the Berlin declaration
Full text linkDINI is the Coalition of German Infrastructure- or Service-Institutions: libraries, computing centres, media centres, learned societies. A DINI certificate exists about document and publication repositories; it covers: policy, author support, legal aspects, authenticity and integrity, indexing, subject indexing, export of metadata, interfaces, logs and statistics, long-term availability. DINI certified repositories will become part of German Academic Publishers, the academic Open Access publishing framework.
Speech made at the conference session 'Reports from delegates on implementing the Berlin Declaration in their organisations'
PENERAPAN PENDEKATAN KONTEKSTUAL UNTUK MENINGKATKAN PROSES PEMBELAJARAN IPA DI KELAS V SDN 03 ANDURING PADANG
Full text linkMasalah dalam penelitian ini dilatarbelakangi oleh rendahnya proses pembelajaran IPA di kelas V SDN 03 Anduring Padang. Hal ini disebabkan proses pembelajaran IPA masih berpusat kepada guru, siswa belum dilibatkan aktif dalam pembelajaran, dan guru belum mengaitkan materi pembelajaran dengan dunia nyata siswa. Tujuan penelitian ini adalah untuk mendeskripsikan bagaimanakah penerapan pendekatan kontekstual untuk meningkatkan proses pembelajaran IPA di kelas V SDN 03 Anduring Padang.Penelitian ini merupakan penelitian tindakan kelas terdiri dari dua siklus meliputi empat tahap tindakan yaitu perencanaan, tindakan, observasi, dan refleksi. Adapun subjek penelitian ini adalah guru dan siswa kelas V SDN 03 Anduring Padang. Teknik pengumpulan data yang digunakan adalah observasi, tes, dan dokumentasi. Instrumen penelitian berupa lembar observasi, lembar tes, dan dokumen.Hasil penelitian ini menunjukkan bahwa perencanaan pembelajaran dengan menggunakan pendekatan kontekstual pada siklus I dengan persentase 76,8 meningkat pada siklus II dengan persentase 92,85. Pelaksanaan aktivitas guru dengan pendekatan kontekstual pada siklus I dengan persentase 82,1 meningkat pada siklus II dengan persentase 96,4 sedangkan Pelaksanaan aktivitas siswa dengan pendekatan kontekstual pada siklus I dengan persentase 76,8 meningkat pada siklus II dengan persentase 92,8. Proses pembelajaran dengan menggunakan pendekatan kontekstual dapat meningkatkan hasil belajar IPA khususnya materi sifat-sifat cahaya. Persentase hasil belajar siswa pada siklus I yaitu 77,4 meningkat pada siklus II yaitu dengan persentase 91,7. Sehingga dapat disimpulkan bahwa Penerapan pendekatan kontekstual dapat meningkatkan proses pembelajaran IPA di kelas V SDN 03 Anduring Padang”
The Semantic field of the expression “… اَ مًليلاَ/ق Qalīlan Mā” in the Qur’an and the problem of Its translation
No full text“…اَ مًليلاَق” kalıbı “iman etmek”, “tezekkür etmek” ve “şükretmek” şeklinde üç farklı fiille birlikte Kur’an’da on âyette geçmektedir. Bu ifadenin gerek tefsirlerdeki gerekse meallerdeki anlamlandırmaları aynı tefsir veya mealde dahi farklılık arz etmektedir. Nitekim anlam, bu kalıp ile kullanılan fiilin niteliksel azlığını veya faillerin niceliksel azlığını veya ilgili fiilin yokluğunu işaret eder şekilde ifade edilmektedir. Bununla birlikte “…اَ مًليلاَق” kalıbının kullanıldığı ifadeler, her müellif tarafından hatta aynı müellif tarafından geçtiği diğer âyetlerde dahi farklı anlamlar ile ifade edilmektedir. Bu çalışmada “…اَ مًليلاَق” kalıbının kullanıldığı âyetlerde doğru anlamın ortaya çıkarılması amaçlanmaktadır. Bu minvalde “… اَ مًليلاَق” kalıbının dilsel/gramatik kullanımının yanı sıra, bu kalıbın geçtiği âyetin bağlamı ve hitap ettiği grupta doğru anlamın ortaya çıkarılmasında önemli bir role sahiptir. Nitekim ilgili ifade Arap dilinde gerçek anlamında (azlık) kullanıldığı gibi yokluk anlamında da kullanılmaktadır. Ancak -el-Bakara 2/88 hariç- diğerlerinin tamamında müşriklerden bahsedildiği ve dolayısıyla bu ifadelerin Mekkî sûrelerde yer aldığı açıktır. Bakara sûresi ise Medenî olup ilgili âyetteki hitap doğrudan Yahudileredir. Bu bağlamda bu ifadenin geçtiği âyetlerde muhatap kitlenin müşrikler/Yahudiler olması nedeniyle ilgili âyetlerde bu kişilerde iman, tezekkür ve şükrün azlığı değil, bu fiillerin yokluğu anlamı daha uygun olmaktadır.The pattern “… اَ مًليلاَ/ق qalīlan ma” takes place in ten verses in the Qur’ān with three different verbs: “to believe in”, “to contemplate” and “to be grateful”. The meaning of this expression in both the exegeses and the translations appear to be different even in the same exegesis or translation. In fact, the meaning is expressed in such a way as to indicate the qualitative insufficiency of the relevant act used with this pattern or the quantitative insufficiency of the agents or the absence of the act in the least. In addition to this, the expressions in which the pattern “… اَ مًليلاَق” is used are expressed by different authors with different meanings even in varied verses that are passed by the same author. In this study, it is aimed to reveal the accurate meaning in verses where “… اَ مًليلاَق” pattern is used. Within this direction, we will put emphasis on the linguistic/ grammatical use of the pattern “… اَ مًليلاَق” as well as the context of the verse in which this pattern is addressed as we believe that they have an important role in revealing the accurate meaning. As a matter of fact, the related expression is used in the meaning of absence in the Arabic language as well as in the real sense (rarity). It is clear that in all the other verses, except al-Baqara 2/88, the polytheists are mentioned and therefore these expressions take place in the Meccan chapters. Since the chapter al-Baqara is an Madanian one, the address in the relevant verse is directly to the Jews. Therefore, we argue that since the interlocutors are the polytheists and Jews in the verses in which the expression take place, it is more appropriate to understand it in the sense of the absence of the acts, believing-contemplating-being grateful, to which the expression denote
DINI certificate : document and publication repositories
No full textThe author presents an initiative of DINI (Deutsche Initiative für NetzwerkInformation) about the certification of a publishing server
Operational Cost Requirements Analysis in Early Childhood Education
Full text linkThe government is attempting to obtain the access of Early Childhood Education pro- grams providing educational assistance. Unfortunately, the government has spent funds to calculate the unit costs that should not occur in the real world of education. In consequence, the aims of this study are to (1) calculate the amount of operational unit costs for Early Childhood Education pro- grams, and (2) enumerate variations and projections of the amount of the operational unit costs in Early Childhood Education programs by region category. This study uses quantitative data with pop- ulation of all Early Childhood Education institutions in Indonesia. The unit of analysis of this re- search is Early Childhood Education institutions consisting of kindergarten, Playgroup, Daycare, and ECCD units. The findings are that the highest operating unit cost is in TPA because there is a full day of service. Next is a Kindergarten institution because at this institution already has a special curriculum to prepare the child proceed to the level of basic education. Then the unit cost is the highest area in the eastern region. Recommendation in determining the amount of financial assistance it is necessary to consider the amount of operational unit costs so that the purpose of providing fi- nancial assistance is to improve access and quality can be achieved.
Keywords: Early Childhood Education, Operational Unit Cost, Fund Aid
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