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All Journal International Journal of Applied Power Engineering (IJAPE) PROSIDING SEMINAR NASIONAL Tadulako Journal Sport Sciences And Physical Education Jurnal Rekayasa Jurnal Rekayasa Sipil dan Desain DINAMIKA Jurnal Ilmiah Teknik Mesin REFLEKSI EDUKATIKA Terampil : Jurnal Pendidikan dan Pembelajaran Dasar UNM Geographic Journal Jurnal Environmental Science Civil and Environmental Science Journal (CIVENSE) Islamic Management: Jurnal Manajemen Pendidikan Islam IKRA-ITH ABDIMAS Holistika : Jurnal Ilmiah PGSD Jurnal Teknodik Edukids: Jurnal Pertumbuhan, Perkembangan, dan Pendidikan Anak Usia Dini JURNAL PENDIDIKAN, SAINS DAN TEKNOLOGI Al'adzkiya International of Education and Sosial (AIoES) Journal juremi: jurnal riset ekonomi Jurnal Ranah Publik Indonesia Kontemporer (Rapik) Pedagogy : Jurnal Pendidikan Matematika PENANOMICS: INTERNATIONAL JOURNAL OF ECONOMICS Seminar Nasional Insinyur Profesional (SNIP) JPNM : Jurnal Pustaka Nusantara Multidisiplin AN-NAS: Jurnal Pengabdian Masyarakat Jurnal Papeda: Jurnal Publikasi Pendidikan Dasar
Iswan Iswan
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Religion Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Evaluasi Struktur Jalan Rel Kereta Api pada Fasilitas Perawatan Angkutan Batu Bara Wilayah DIVRE IV TNK Yulisna Anggi; Iswan Iswan; Fikri Alami
Jurnal Rekayasa Sipil dan Desain Vol 8, No 3 (2020): Edisi September 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Untuk mengetahui kondisi struktur jalan rel yang telah dibangun pada STA 28+221,52 sampai dengan STA 30+269,80 di stasiun rejosari kecamatan Natar, Lampung Selatan. Tujuan penelitian ini adalah mengevaluasi desain exsisting struktur jalan rel kereta api baik dari segi dimensi ataupun mutu bahan menggunakan software FEA (Finite Element Analysis) yaitu aplikasi SAP 2000 dan Plaxis versi 8.6. Dari hasil pembahasan didapatkan evaluasi struktur jalan rel pada STA 28+221,52 sampai dengan STA 30+269,80 80% memenuhi standar peraturan yang ada secara mutu bahan material. Didapatkan nilai faktor keamanan yaitu pada STA 29+575 sebesar 0,856. Pada STA 30+125 sebesar 1,047, pada STA 30+250 sebesar 1,198. Nilai ini tidak memenuhi syarat kestabilan tanah yaitu faktor keamanan > 1,25 sehingga dilakukan analisis berikutnya menggunakan desain turap yang dipasang pada kelongsoran tanah yang terjadi. STA 29+575 sebesar 1,971, STA 30+125 sebesar 1,454, STA 30+250 sebesar 1,471 yang artinya peningkatan faktor keamanan terjadi sebesar 20% dan memenuhi syarat kestabilitasan tanah. Kemudian pada analisa SAP 2000 dilakukan pada bantalan beton untuk mengetahui keretakan pada bantalan yang terjadi. Dari hasil analisis yang dilakukan didapat : bantalan beton tidak retak jika diberikan jacking force sebesar 74 kN.
PENANGGULANGAN LIMBAH PLTU BATUBARA Iswan Iswan
Dinamika : Jurnal Ilmiah Teknik Mesin Vol 1, No 2 (2010)
Publisher : Jurusan Teknik Mesin, Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/djitm.v1i2.335

Abstract

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INTERNATIONAL COLLABORATION: UMJ and UTM TEACHING PRACTICE PERSPECTIVES Iswan Iswan; Aswir Aswir
PROSIDING SEMINAR NASIONAL & INTERNASIONAL 2018: PROCEEDING 1ST INSELIDEA INTERNATIONAL SEMINAR ON EDUCATION AND DEVELOPMENT OF ASIA (INseIDEA)
Publisher : Universitas Muhammadiyah Semarang

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Abstract

This paper reports on an international collaboration between two universities, one private university in Indonesia (Universitas Muhammadiyah Jakarta, UMJ) and one public and world class university in Malaysia (Universiti Teknologi Malaysia, UTM). Both collaborative action plans were implemented through projects in program development, faculty exchange, graduate student/teacher field experiences, pre-service student’s internship mentoring and also conjoined research in the area of a foreign/second language teaching and teacher development, and educational technology. Over a three-year period from 2015-2018 reported that UMJ, i.e Fakultas Ilmu Pendidikan (Faculty of Education) sent students for teaching practice to Fakulti Pendidikan UTM in four batches with 65 preservice students. In March 2018, UTM sent seven students to do internship program atUMJ. This collaboration commitment portrayed a smooth international partnership between universities and hoped to be continued in other field of collaborations. Keywords: international collaboration, teaching practice program, UTM, UMJ
Perbandingan antara Campuran Pasir Baik dengan Pasir Buruk pada Perbaikan Tanah Dasar Jalan Terhadap Daya Dukung Setelah Dilakukan dan Tidak Dilakukannya Swelling Potential Ditinjau Terhadap Tebal Perkerasan Jalan Taufiq Qurrahman; Iswan Iswan; Rahayu Sulistyiorini
Jurnal Rekayasa Sipil dan Desain Vol 9, No 2 (2021): Edisi Juni 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Swelling of clay soil has an impact on building construction. The problem that occurs in Marga Kaya Village, in the rainy season the soil is mushy and the carrying capacity becomes low so that the road is bumpy and the road body decreases. This study uses good sand stabilization material and bad sand with a mixture variation of 5%, 10% and 15% This study aims to find out the thick decrease in road pavement from each addition of mixed variations. Cbr results unsoaked and soaked maximum good sand occurs in a mixture of sand 15% with a value of 14.2% and 3.2%. The thickness of pavement on CBR unsoaked and soaked sand is well efficient on a mixture of sand 15% with a thickness of D1 = 2.25 cm, D2 = 20 cm and D3 = 10 cm, and soaked D1 = 8.75 cm, D2 = 20 cm and D3 = 10cm. Cbr unsoaked and soaked maximum value of bad sand occurs in 15% sand mixture with values of 13.9% and 2.6%. Thickness of pavement on CBR unsoaked and soaked bad sand maximum on the sand mixture 15% with thickness D1 = 2.5 cm, D2 = 20 cm and D3 = 10 cm, and soaked with thickness D1 = 9.25 cm, D2 = 20 cm and D3 = 10 cm. The value of swelling decreased from 11.4% to 5.7% and 8% in the addition of sand 15%.
Perbaikan tanah dasar jalan dengan substitusi material pasir terhadap kemampuan daya dukung tanah dengan uji tekan pemadatan modifikasi (modified proctor) Julian Fahlefi; Iswan Iswan; Muhammad Karami
Jurnal Rekayasa Sipil dan Desain Vol 8, No 4 (2020): Edisi Desember 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

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Tanah lempung dengan plastisitas tinggi, kohesifitas yang besar berakibat fluktuasi kembang susut yang relatif besar. Hal ini yang menyebabkan kondisi jalan yang dibangun diatas tanah lempung mengalami kerusakan. Oleh karena itu dalam penelitian ini dilakukan perbaikan tanah dengan cara memperbaiki gradasinya yaitu mencampur tanah asli dengan pasir. Sampel tanah yang digunakan pada penelitian ini berasal dari Ruas Jalan R.A.Basyid, Kecamatan Jati Agung, Lampung Selatan pada STA 3+100 dengan variasi pasir 0%, 5%, 10% dan 15 % dari berat tanah. Pengujian pada penelitian ini adalah pengujian CBR dari efek pegembangan tanah, lalu dilakukan perhitungan tebal perkerasan dengan metode analisa komponen SKBI 2.3.26.1987 dan metode manual desain perkerasan jalan 2017. Pada penelitian inisampel tanah yang digunakan termasuk kelompok A-7-6(tanah yang buruk). Setelah penambahan variasi pasir, batas plastis tanah tersebut meningkat sedangkan batas cair dan indeks plastisitas menurun, hal ini mengakibatkan pengembangan tanah terjadi penurunan pada 15% pasir yaitu dari 0,62% menjadi 0,17%, sedangkan nilai CBR mengalami peningkatan yang signifikan pada pasir 15% yaitu dari 2,6% menjadi 26,0%. Dengan hal ini pada perhitungan dengan metode analisis komponen SKBI 2.3.26.1987 tebal lapis menjadi lebih tipis, pada 0% pasir yaitu tebal D1=7,5 cm, D2=25 cm dan D3=44 cm, sedangkan pada 15% pasir tebal D1=5 cm, D2=17 cm dan D3 tidak digunakan. Perhitungan dengan menggunakan metode manual desain perkerasan jalan 2017 pada variasi pasir 5%, 10%, dan 15% tidak perlu perbaikan jalan karena nilai CBR ≥6.
Penggunaan Pasir Seragam pada Perbaikan Subgrade Ditinjau Terhadap Tebal Perkerasan Jalan (Swelling Potential dan Non Swelling Potential) Ayu Ning Trias Pratiwi; Iswan Iswan; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 9, No 2 (2021): Edisi Juni 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Subgradeis the most important part to be used as the focus and support of all construction loads that are on it. If the subgrade is clay soil that has a low carrying capacity and is very sensitive to moisture content, then nearby buildings will often suffer damage, such as land located in Marga Kaya Village. In this study using the method of mixing native soil with stabilization material in the form of uniform sand derived from Mount Sugih with a mixture variation of 5%, 10% and 15% of the dry weight of the soil. The test results showed cbr unsoaked and soaked maximum occurred in sand mixture 15% with CBR Unsoaked value of 13.2% and CBR Soaked with a value of 2.9%. Road pavement thickness on CBR Unsoaked and Soaked efficiently on sand mixture 15% with thickness D1 = 2.75 cm, D2 = 20 and D3 = 10 cm, and CBR Soaked with thickness D1 = 8.75 cm, D2 = 20 cm and D3 = 10 cm. The value of swelling decreased from 11.4% to 7.4% in the addition of uniform sand by 15%. DDT value is influenced by cbr value the greater cbr value then DDT will increase.
Evaluasi Stabilitas Lereng Pada Ruas Jalan C.10 Perumahan Citraland Bandar Lampung Menggunakan Program Komputasi dan Penanggulangannya Muhammad Nur Kholiq; Iswan Iswan; Aminudin Syah; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 9, No 4 (2021): Edisi Desember 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Citraland is a located in a hilly area, has steep contours and different elevations. So the area has the potential for landslides. This study is to analyze the value of the slope safety factor and calculate the slope stability using a concrete sheet pile with a computational program. The methods used are the Fellenius, Bishop, Janbu, and Morgenstern-price methods. From the results of the computational program analysis, the values of the existing slope safety factors using the Fellenius, Bishop, Janbu, and Morgenstern-price methods were 0.965, 1.052, 0.925, 1.027 for static conditions and for dynamic conditions of 0.795, 0.881, 0.763, 0.858 . After countermeasures using concrete sheeting with dimensions of 3 meters of pile height on the ground, 1.66 meters of embedded sheeting, and 0.5 meters of sheet pile thickness, the existing slope safety factor values are 2.381, 2.478, 1.817, 2.732 for static loads and for dynamic loads. obtained values of 1.976, 2.073, 1.505, and 2.356. Countermeasures using concrete sheet piles are quite effective in increasing the value of the safety factor, so that countermeasures using concrete sheet piles are quite stable if applied at the research site. Keywords:Slope stability, Safety factor,Fellenius, Bishop, Janbu,Morgenstern-price, Sheet pile
Studi Analisis Stabilitas Lereng Tanah Timbunan Menggunakan Metode Fellinius dan Bishop Serta Penanggulangannya (Studi Kasus : Perumahan Citraland Bandar Lampung) Badruzzaman Aji; Iswan Iswan; Aminudin Syah; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 10, No 2 (2022): Edisi Juni 2022
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Citraland yang terletak di wilayah perbukitan, memiliki kontur yang curam dan elevasi yangberbeda. Sehingga pada daerah tersebut berpotensi terhadap longsor. Penelitian ini adalah untukmenganalisis nilai faktor aman lereng dan menghitung stabilitas lereng menggunakan dindingpenahan tanah dengan perhitungan manual. Metode yang digunakan adalah metode Fellenius danBishop. Dari hasil analisis perhitungan manual, didapatkan nilai faktor aman lereng eksistingdengan metode Fellenius dan Bishop masing-masing sebesar 0,7296 dan 1,0637. Setelahdilakukan penanggulangan menggunakan dinding penahan tanah dengan dimensi tinggi 2 meterdan tebal 1,7 meter didapatkan nilai stabilitas terhadap geser yaitu SF = 2,3871 ≥ 2 (aman) padakondisi normal. Stabilitas terhadap guling pada kondisi normal yaitu SF = 2,2502 ≥ 2 (aman).Stabilitas terhadap geser pada kondisi gempa yaitu SF = 2,1081 ≥ 2 (aman). Stabilitas guling padakondisi gempa yaitu SF = 2,054 ≥ 2 (aman).. Penanggulangan menggunakan dinding penahantanah cukup efektif terhadap meningkatnya nilai faktor aman, sehingga penanggulanganmenggunakan dinding penahan tanah cukup stabil jika diterapkan di lokasi penelitian. Kata Kunci: Stabilitas lereng, Faktor aman, Fellenius, Bishop, Dinding penahan tanah
Analisis Kelongsoran pada Tanah Lereng di Ruas Jalan Kecamatan Batu Ketulis sebagai Material Timbunan Jalan Ditinjau Terhadap Jenis Pemadatan dan Swelling Panca Kurniawan; iswan iswan; Ahmad Zakaria; Lusmeilia Afriami
Jurnal Rekayasa Sipil dan Desain Vol 10, No 1 (2022): Edisi Maret 2022
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Batu Ketulis is a sub-district in the province of West Lampung. This regency is well-known as an advanced area in agriculture and other natural resources. Slopes can be formed naturally or man-made. In landfilling activities that will form a new slope will result in a change in stress in the soil which affects the stability of the soil.The purpose of this study was to determine the magnitude of the swelling on the slope soil in the Batu Ketulis road section of West Lampung Regency, to know the magnitude of the shear force on the slope soil as embankment material in the sub-district of batu ketulis roads, to know the stability of the slope as embankment material in the road section. the Batu Ketulis area so that the level of soil security can be identified . Soil conditions with fully saturated conditions have the least stability compared to other conditions. From the results of the analysis carried out on fully saturated soil conditions at locations 1 and 2 with variations in height and angle, the value of the critical safety factor is 1.262-1.282 with a height of 8 meters, an angle of 400 degrees.
PENGARUH ONLINE GAME TERHADAP PERKEMBANGAN BAHASA ANAK Iswan Iswan; Ati Kusmawati
Jurnal TEKNODIK Jurnal Teknodik Vol.19 No. 1 April 2015
Publisher : Pusat Data dan Teknologi Informasi Kementerian Pendidikan Kebudayaan, Riset dan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (57.469 KB) | DOI: 10.32550/teknodik.v19i1.142

Abstract

Abstrak:Penelitian ini bertujuan untuk mengetahui dampak dari online game terhadap perkembangan bahasa anak-anak. Penelitian ini menggunakan metode kuantitatif dan kualitatif dengan pendekatan deskriptif, yaitu yang memusatkan perhatian pada efek (dampak) dari berbagai faktor, memberikan makna (pemaknaan) pada gejala sosial. Berdasarkan hasil pengolahan kuesioner dan hasil wawancara dari 100 responden. Hasil penelitian menunjukkan bahwa: pertama, online game memberikan pengaruh yang signifikan terhadap perkembangan bahasa anak. Hal ini terlihat dari perhitungan uji signifikansi regresi dan diperoleh nilai Fhitung=179,64 sedangkan Ftabel = 4,1. Kedua, terdapat korelasi positif antara variabel X yaitu online game dengan variabel Y yaitu perkembangan bahasa anak, di mana uji signifikansi koefisien korelasi melalui uji t menunjukkan bahwa thitung (13,80) > ttabel (1, 67), sehingga koefisien korelasi berdasarkan hasil perhitungan adalah signifikan dengan dk 99, á = 0,05.Kata kunci: Pengaruh online game, perkembangan bahasa anak.Abstract: The aim of this research is to describe the impact of online game towards children’s language development. This research applied in both qualitative and quantitative methods with descriptive approach focusing on describing the impact of several influencing factors, and giving meaning to social cases. Based on the analysis of questionnaires and interview from 100 respondents, the result of this study shows that: first, online game gives significant effect on children’s language development. It can be seen from regression significance test calculation which obtained 179, 64 for Fcal, and 4,1 for Ftable. Second, both variables (X dan Y) are significantly correlated in which the t-test of correlation coefficient significance is tcal (13,80) > ttabel (1, 67) with df 99, á = 0.05.Keywords: The impact of online game, children’s language development.
Co-Authors Abdil Hafizh Arrofiq Achmad Satria Nursar Ade Setiawan Ahmad Zakaria Ahmad Zakaria Albertus Willy Pratama Aldy Fernanda Alward Farabi Amal Khairan Andius Dasa Putra Andius Dasa Putra Aswir Aswir Ati Kusmawati Aulia R Sudarman Ayu Ning Trias Pratiwi Badruzzaman Aji Bahar, Herwina Bahfen, Munifah Basuki Sri Hermanto Bravo Pandiangan Carissa, Caroline Clara Christian Prasenda Dani Aprizal DELLA ANDANDANINGRUM Desti Rahayu Devrisvansyah Irwan Dewi, Afini Riani Dhea Chandra Dewi, Dhea Chandra Dewi Diah Andika Sari Diah Larasati DIRGANTARA WICAKSONO Duha, Mayunata Faanzir, Faanzir Fatmi Riandini Fatria, Akhmad Ridho Ferdi Ferdian Fikri Alami Fikri Alami Fransiskus Afrie Hadi, Sofian Hadidah, Indah Handayani, Friska Hany Octavia Anggraini Happy Indira Dewi hardianto widyastomo Haryati Haryati Hatapayo , Abdul Aziz Hedi Saputra hermawan arbenta Husainah, Nazifah I Komang Tri Herdiana Ikratul Herman Imam Wahyudin Indah Parsianti Istikomah Istikomah Jafri, M. julian fahlefi Lusmeilia Afriami Lusmeilia Afriani Lusmeilia Afriani M Lucky Apriansyah Nawawi M. Fahmi Rinaldi M. Iqbal Hermawan Ma'rufi, Ma'rufi Markus Manik martha vepti dhina Mirsa Susmarani Muhammad Aldani Muhammad Ilyas Muhammad Jafri muhammad karami Muhammad Nur Kholiq Muhammad Rendi Ramdhani Natanael Sembiring Nawawi Nawawi NURWAHIDAH NURWAHIDAH Ofik Taufik Purwadi, Ofik Taufik Panca Kurniawan Prayitno, Irwan Putra Andrean A. Putri, Silfa Nayyira Rahayu Sulistyiorini Rahayu Sulistyorini Rahman, Muhammad Natsir Rasyid, Ramly Renold Pangidoan Rambe Restu Agusni Retno Primantiko Retno Wulandari Rian Alfian Riansyah Putra Rio Dwi Septian Risqon Septian Ritonga, Matnur Rizki Dwi Putra Rizki Prinanda Umar Rizki, Fildzah Rizki, M. Rosmini Maru S. Indira Adhi Ariana Saiful Bahri Salsabila Atalia Sadil Sejati, Septias Herson Setyanto Setyanto Sherliana Sherliana Sholehuddin, Sholehuddin Sindu Abadi Sampurna Siti Yulianah M. Yusuf SRIYANTI RAHMATUNNISA Sulaiman Zhiddiq, Sulaiman Sumiharni Sumiharni Sundi, Venni Herli Suryaningsih Suryaningsih Susilo, G.E. Syah, Aminudin SYAMSU ALAM Taufik Ramadhani Taufiq Qurrahman Umar Umar Wahyudhi, Aden Wijayanti, Nurulita WINATA, WIDIA yulisna anggi Yupi Ardianto Yusak Maryunianta