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MaPan ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 347
Author(s):  
Maunah Setyawati ◽  
Habsanul Aisyah ◽  
Kusaeri Kusaeri

This study aims to develop assessment questions or instruments to measure students' numeration literacy skills integrated with the Islamic context. The research was conducted through 4 stages: initial assessment, design, test making, and a study of problem items then limited trials and analysis. The instruments used include algebra and statistics by taking the Islamic context of zakat material. Experts validated the instrument, and the validation results were analyzed using Aiken's formula. The instrument was also tested online and limited to 22 students of grade 8 MTsN 1 Surabaya. The test results were analyzed using product-moment correlation to determine its empirical validity and used alpha Cronbach to determine its reliability. The results showed that the 6 questions developed are valid with a validity value of 0.783. This result is reinforced by empirical validity results that show that the instruments developed are valid in terms of material/content, construct, and language. The reliability test results using alpha Cronbach obtained the reliability coefficient is 0.72. The instrument developed in this research is expected to be one of the references of students in practicing their numeracy skills and preparing to face national assessments by the Ministry of Education. Because it was found in this study that students have difficulty answering the question of numeration literacy with Islamic context. This case shows that students' numeration literacy skills are still low.


2021 ◽  
Vol 28 (3) ◽  
pp. 349-358
Author(s):  
Thopan Andhika Putra ◽  
Bambang Sugeng Subagio ◽  
Eri Susanto Hariyadi

Abstract One way to be developed to overcome challenges in providing flexible pavement materials is to apply the green roads principle by reusing some or all of the old road pavement material or Reclaimed Asphalt Pavement (RAP) as a material for new road pavement, which if reused will affect the performance of the mixture, such as decreasing the level of durability and premature pavement damage, so an effort must be made to improve the performance of the recycled material, namely by adding full extracted Asbuton and rejuvenating materials. The RAP material was obtained from scratching the asphalt of the Jagorawi Toll Road. The mixture used was asphalt concrete-binder course (AC-BC) layer using 30%, 40%, and 50% RAP material, using full extracted Asbuton at 6%, and Nichireki rejuvenating material. Then, on mixtures with RAP material, Marshall Test, Resilient Modulus test with UMATTA, and resistance to fatigue with four points loading test with strain control were conducted. The use of RAP material with modified asphalt in the form of an addition of full extracted Asbuton into the Pen 60/70 Asphalt can increase the asphalt stiffness. Marshall test results showed that a mixture with 6% full extracted asbuton content and 0% RAP material content (A6RAP0) gave the highest stability value. The results of the Resilient Modulus test showed that the mixture with 6% full extracted asbuton content and 50% RAP material content (A6RAP50) gave a high Resilient Modulus value at a test temperature of 45oC. The results of the fatigue resistance test showed that the mixture with 6% full extracted asbuton content and 50% RAP material content (A6RAP50) at a strain level of 300 µε gave the longest fatigue life. Keywords: Reclaimed asphalt pavement (RAP), full extracted asbuton, asphalt concrete -binder course, modified asphalt, resilient modulus, fatigue life. Abstrak Salah satu cara dikembangkan untuk mengatasi tantangan dalam penyediaan material perkerasan lentur adalah menerapkan prinsip greenroads dengan memanfaatkan kembali sebagian atau keseluruhan material perkerasan jalan lama atau Reclaimed Asphalt Pavement (RAP) sebagai material untuk perkerasan jalan yang baru, dimana jika digunakan kembali akan mempengaruhi kinerja dari campuran seperti penurunan tingkat durabilitas dan kerusakan dini perkerasan, sehingga harus dilakukan suatu upaya untuk memperbaiki kinerja dari material daur ulang tersebut, yaitu dengan penambahan Asbuton murni dan bahan peremaja. Material RAP didapatkan dari hasil garukan aspal Jalan Tol Jagorawi. Campuran yang dipakai adalah Laston Lapis AC-BC menggunakan kadar material RAP sebanyak 30%, 40%, dan 50%, dengan penggunaan Asbuton murni sebesar 6%, serta bahan peremaja Nichireki, dan kemudian selanjutnya pada campuran dengan penggunaan material RAP dilakukan pengujian Marshall, Modulus Resilien dengan alat UMATTA dan ketahanan terhadap kelelahan (fatigue) metode four points loading test dengan kontrol regangan. Penggunaan material RAP dengan aspal modifkasi berupa penambahan Asbuton murni kedalam Aspal Shell Pen 60/70 dapat meningkatkan kekakuan aspal. Hasil pengujian Marshall menunjukkan campuran dengan kadar Asbuton murni 6% dan kadar material RAP 0% (A6RAP0) memberikan nilai stabilitas tertinggi. Hasil pengujian Modulus Resilien menunjukkan campuran campuran dengan kadar Asbuton murni 6% dan kadar material RAP 50% (A6RAP50) memberikan nilai Modulus Resilien yang tinggi pada temperatur pengujian 45oC. Hasil pengujian ketahanan terhadap kelelahan menunjukkan campuran dengan kadar Asbuton murni 6% dan kadar material RAP 50% (A6RAP50) pada regangan 300 µε memberikan umur kelelahan yang paling panjang. Kata-kata kunci: Reclaimed asphalt pavement (RAP), Asbuton murni, laston lapis antara, aspal modifikasi,  modulus resilien, umur kelelahan.  


2021 ◽  
Vol 19 (3) ◽  
pp. 303-316
Author(s):  
Moh Isom ◽  
Evi Sopandi ◽  
Achmad Siswanto

Abstract Conceptual discourse and practice of religious education is considered effective as a means of internalizing character values as early as possible for the provision of children's lives in the future. This study describes the implementation of religious education in instilling character values in early childhood by using a survey method in 624 early childhood education in 33 provinces in Indonesia. The results of this study indicate that the majority of early childhood education leaders implement religious education policies in the institutions they lead with a calculated value of (93.37%). Then the implementation of religious education strengthens cognitive knowledge through material content about God by (99.84%), Prophets by (100%), holy books by (100%), houses of worship by (100%), and material content about morals by (100%) 100%). While the affective aspect of religious education includes material content about value planting (100%), planting the value of helping to help (99.84%). While the material that leads to the psychomotor aspect includes material about mutual respect (99.52%), and material about politeness (99.84%). The narrative of the survey results shows that religious education at the early childhood education level has been carried out in accordance with early childhood education standards, namely placing religious education as a means of internalizing character values through material content that strengthens the cognitive, affective and psychomotor abilities of early childhood.   Abstrak Diskursus konseptual dan praktik pendidikan agama dinilai efektif sebagai sarana internalisasi nilai karakter sedini mungkin untuk bekal hidup anak ke depan. Penelitian ini menjelaskan implementasi pendidikan agama dalam menanamkan nilai karakter pada anak usia dini dengan menggunakan metode survei di 624 lembaga pendidikan anak usia dini yang ada di 33 Provinsi di Indonesia. Hasil studi ini menunjukkan bahwa mayoritas pimpinan pendidikan anak usia dini menerapkan kebijakan pendidikan keagamaan di lembaga yang dipimpinnya dengan nilai perhitungan sebesar (93,37%). Kemudian implementasi pendidikan agama cenderung memperkuat aspek kognitif melalui konten materi tentang Tuhan sebesar (99,84%), Nabi sebesar (100%), kitab suci sebesar (100%), rumah ibadah sebesar (100%), dan konten materi tentang akhlak sebesar (100%). Sedangkan pendidikan agama yang menekankan aspek afektif meliputi konten materi tentang penanaman nilai kejujuran sebesar (100%), penanaman nilai tolong menolong sebesar (99.84%). Sementara untuk materi yang mengarah ke aspek psikomotor meliputi materi tentang saling menghormati sebesar (99,52%), dan materi tentang kesopanan sebesar (99,84%). Narasi hasil survey tersebut menunjukkan bahwa pendidikan agama pada jenjang pendidikan anak usia dini sudah dilaksanakan sesuai dengan standar isi pendidikannya, yaitu menempatkan pendidikan agama sebagai sarana internalisasi nilai karakter melalui konten materi yang memperkuat kognitif, afektif dan psikomotorik anak usia dini.


2021 ◽  
Vol 19 (2) ◽  
pp. 260
Author(s):  
Ariva Luciandika ◽  
Kusubakti Andajani ◽  
Dewi Ariani ◽  
Manavavee Mamah

<p class="StyleAuthorBold"><strong>Abstrak</strong></p><p>Tujuan penelitian adalah mengembangkan media pembelajaran penyuntingan melalui aplikasi “Sunting Pintar”. Aplikasi tersebut merupakan laman interaktif yang digunakan dosen dan mahasiswa dalam pembelajaran penyuntingan. Laman terdiri atas tiga portal, yaitu admin (dosen), editor (mahasiswa), dan pengguna (masyarakat). Metode penelitian menggunakan <em>constructivist instructional design</em> yang terdiri atas 4 tahap, yaitu <em>define, design, development, </em>dan <em>dissemination</em>. Produk divalidasi oleh ahli bahasa dan praktisi untuk mengukur kelayakan dan kemudian diujicobakan pada mahasiswa. Responden uji coba sebanyak 30 mahasiswa  yang mengikuti mata kuliah Penyuntingan dan 10 mahasiswa Jurusan Bahasa Melayu, Faculty of Humanities and Social Sciences, Yala Rajabhat University, Thailand. Teknik analisis data yang digunakan adalah deskriptif kualitatif. Berdasarkan hasil validasi dan uji coba, maka disimpulkan bahwa produk berada pada kategori layak untuk diimplementasikan dengan memperhatikan saran dari validator terkait penambahan konten materi penyuntingan dan ilustrasi gambar dalam aplikasi.</p><p> </p><p class="StyleAuthorBold"><strong><em>Abstract</em></strong></p><p><em>The purpose of this research was to develop editing learning media through the "Sunting Pintar" application. The application was an interactive page that was used by lecturers and students in learning editing. The page consists of three portals, namely admin (lecturer), editor (student), and user (community). This research method used constructivist instructional design which consists of 4 stages, namely define, design, development, and dissemination. The product was validated by linguists and practitioners to measure feasibility and then piloted on students. The trial respondents were 30 students who took the Editing course and 10 students of the Malay Language Department, Faculty of Humanities and Social Sciences, Yala Rajabhat University, Thailand. The data analysis technique used descriptive qualitative. Based on the results of the validation and testing, it was concluded that the product was in a feasible category to be implemented by taking into account the suggestions from the validator regarding the addition of editing material content and image illustrations in the application.</em></p>


Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5613
Author(s):  
Xiao Li ◽  
Xiong Zhang ◽  
Hao Ren

Land desertification, a severe global ecological and environmental problem, brings challenges to the sustainable utilization of land resources in the world. The purpose of this research is to use hydrophobic theory to prepare impervious and breathable sand, and to solve the problems of sandy soil that seeps easily and makes it difficult for vegetation to survive in desertified areas. The influences of coating material content, first-level and second-level rough structure on the impermeability and air permeability of impervious and breathable sand were studied. The research showed that, with the increase in coating material content, the impervious performance of the sample increased firstly and then decreased, and the air permeability rose continuously. The hydrostatic pressure resistance of the sample can reach an extreme value of 53 mm. The first-level rough structure of micron structure can greatly improve the hydrophobic performance, thus improving the impervious performance. The addition of micron calcium carbonate would improve the hydrostatic pressure resistance height of the sample to 190 mm. The sample would reach a superhydrophobic state in the condition of a first-level rough structure of a nano structure built by nano silica, and the contact angle was up to 152.0°, so that the hydrostatic pressure resistance height can rise to 205 mm. The best performance would be achieved under the condition of relatively less raw material with a second-level rough structure of micro–nano. At this point, the contact angle of the sample reached 152.8° and the hydrostatic pressure resistance height was up to 205 mm. At the same time, the air permeability index of the above four kinds of impervious and breathable sand met all planting requirements. The sample prepared can satisfy the demands of different degrees of impermeability and air permeability, and can be widely used in desertification control.


2021 ◽  
Vol 63 (9) ◽  
pp. 822-828
Author(s):  
Faruk Karaca ◽  
İlhan Can

Abstract International organizations such as the World Health Organization (WHO) and the International Labor Organization (ILO) have called for an end to the use of asbestos and its derivatives in all sectors, primarily due to the negative effects on human and environmental health. For this reason, manufacturing and use of asbestos linings are also prohibited in most developed countries. For this purpose, there are many studies in the literature on the development and research of nonasbestos linings. In the literature, topics such as material content, production, cost, braking performances and mechanical properties of composite linings are commonly encountered. With the technology in the developing world, the working conditions of vehicle elements are getting more difficult. For this reason, during braking, the amount of energy required to be damped against the unit area in the pad surfaces increases, and since the lining surface areas get smaller, the operating temperatures exceed the limits of the material components. Under these conditions, the design of the lining material content is extremely important, taking into account parameters such as load and operating conditions, in order to slow down or stop the vehicle safely. In this study, the braking performance, mechanical and tribological properties of the samples obtained from a number of production processes such as mixing, pre-shaping and pressing of the materials by altering the particle sizes (50 μm, 75 μm and 125 μm) of the filler and friction materials used together with powdered alumina (Al2O3) were investigated. The most suitable parameters were determined as lining material for the samples obtained.


2021 ◽  
Vol 5 (2) ◽  
pp. 197-202
Author(s):  
Desak Gede Twelva Wiryani ◽  
I Wayan Lasmawan ◽  
Ida Bagus Putrayasa

This study aims to produce teaching materials in the form of teaching books based on Discovery Learning on the theme I Animal and Human Organ Movements, Sub-Theme I Animal Movement Organs. This research is a type of development research using the 4D model. The trial subjects in this study were expert subjects, namely media experts, material experts, and teachers in Cluster V, Kerambitan District, Tabanan Regency, as well as 42 students in grade V. The data collection technique was done by using a questionnaire. This questionnaire is used to assess textbooks developed in terms of material content and textbook appearance. Data were analyzed by descriptive quantitative and qualitative. The results of this study are seen from the validity is very feasible with an average value of 4.25, seen from the practicality is very practical with an average score of 89 teachers and an average value of students 82.75 and seen from the effectiveness, it is at a moderate level of effectiveness. with an average value of 0.60


Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1084
Author(s):  
Marek Matejka ◽  
Dana Bolibruchová ◽  
Radka Podprocká

Nowadays, high-pressure die-casting technology is an integral part of industrial production. High productivity, reduced machining requirements together with the low weight and advantageous properties of aluminium alloys form an ideal combination for the production of numerous components for various industries. The experimental part of the presented article focuses on the analysis of the change in the ratio of returnable material and commercial-purity alloy in a batch depending on the internal homogeneity of castings (microstructure, porosity and microhardness) from AlSi9Cu3(Fe) alloy. The use of returnable material in the batch is a key factor in achieving the maximum use of aluminium melt, which increases the economic efficiency of production and, last but not least, has a more favorable impact on the environment. Structural analysis showed that the increase in returnable material in the batch was visibly manifested in a change in the morphology of the eutectic Si. A negative change in the morphology of the eutectic Si particles was observed after increasing the returnable material content in the batch to 75%. The evaluation of porosity at control cuts showed the influence of the increase of returnable material in the batch, where the worst results were achieved by the alloy with 90% but also the one with 55% returnable material content in the batch.


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