Dinamika Rekayasa最新文献

{"title":"Cover Dinarek Agustus 2023","authors":"Chief Admin","doi":"10.20884/1.dr.2023.19.2.1526","DOIUrl":"https://doi.org/10.20884/1.dr.2023.19.2.1526","url":null,"abstract":"","PeriodicalId":31510,"journal":{"name":"Dinamika Rekayasa","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135990460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pemanfaatan Limbah Batu Marmer sebagai Substitusi Parsial Agregat Kasar pada Campuran Beton terhadap Kuat Tekan Beton","authors":"Alfan Safari, Agustinus Agus Setiawan","doi":"10.20884/1.dr.2023.19.2.1498","DOIUrl":"https://doi.org/10.20884/1.dr.2023.19.2.1498","url":null,"abstract":"<p>Penelitian ini bertujuan untuk memanfaatkan limbah pecahan marmer sebagai bahan subtitusi parsial batu pecah alami dalam pembuatan beton. Pecahan marmer diperoleh dari daerah Padalarang, Kabupaten Bandung Barat. Sebagai benda uji dalam penelitian ini, digunakan benda uji berbentuk silinder beton berukuran 10 cm × 20 cm. Persentase limbah marmer yang digunakan sebesar 10%, 25%, 50% dan 75% dari total berat agregat kasar yang dibutuhkan. Penggunaan limbah marmer sebagai bahan pengisi dalam adukan beton tidak menurunkan nilai slump dari beton normal. Nilai slump beton dengan agregat kasar dari limbah marmer adalah sebesar 75 – 100 mm, yang masih memenuhi kriteria slump untuk pekerjaan struktur di lapangan. Sementara itu penggantian agregat kasar dengan limbah batu marmer hingga 25% mampu menghasilkan beton dengan nilai kuat tekan beton 30,1 MPa, lebih tinggi 18,97 % dari pada campuran beton normal. Penambahan limbah marmer di atas 50% mengalami penurunan nilai kuat tekan beton. Penggunaan limbah marmer hingga 75% meningkatkan berat jenis beton hingga 2,8% daripada berat jenis beton normal.</p>","PeriodicalId":31510,"journal":{"name":"Dinamika Rekayasa","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135990464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Efisiensi Lintasan Produksi Tahu Dengan Metode Ranked Positonial Weight di Pabrik Tahu XYZ","authors":"Ayu Anggraeni Sibarani, Bilqis Adilah Yudityaningsih, Fanny Mulya Kirana, Rafi Triyanto, Reina Stevani Putri, Rasyad Nursyaban Asshafly","doi":"10.20884/1.dr.2023.19.2.1399","DOIUrl":"https://doi.org/10.20884/1.dr.2023.19.2.1399","url":null,"abstract":"<a name=\"_Hlk117689232\"></a><span lang=\"EN-AU\">Penelitian ini membahas pengaturan <em>line balancing</em> pada Pabrik Tahu XYZ menggunakan metode <em>ranked positional weight.</em> Metode pengamatan dilakukan secara langsung melalui proses observasi dan wawancara untuk mendapatkan data pengamatan. Data yang telah diperoleh kemudian akan diolah untuk mendapatkan nilai <em>idle time,</em> <em>line efficiency, balance delay, smoothness index</em> dan jumlah stasiun usulan. Berdasarkan perhitungan data didapatkan nilai <em>line efficiency </em>awal sebesar 63,07%, <em>balance delay </em>36,93%,<em> smoothness index</em> 51,729 dengan total <em>idle time </em>421,2 menit untuk 11 stasiun. Setelah dilakukan penyeimbangan lintasan dengan menghitung jumlah stasiun maksimal, maka didapatkan nilai <em>line efficiency, balance delay, </em>serta<em> smoothness index, </em>secara berturut sebesar 76,07%<em>, </em>23,93%,<em> </em>36,40<em>, </em>dan <em>idle time </em>sebesar 121,22 menit dengan jumlah stasiun sebanyak 6 stasiun. Data tersebut menunjukkan bahwa terdapat peningkatan efisiensi pada <em>line balancing</em> yang terdapat pada pabrik tahu tersebut</span><span lang=\"EN-AU\">.</span>","PeriodicalId":31510,"journal":{"name":"Dinamika Rekayasa","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135990470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Batako Ban Bekas Hemat Energi Dengan Bahan Tambah Super Plasticizer","authors":"Nastain Nastain, Sugeng Waluyo","doi":"10.20884/1.dr.2023.19.2.1520","DOIUrl":"https://doi.org/10.20884/1.dr.2023.19.2.1520","url":null,"abstract":"<p>Komponen dinding memberi kontribusi besar pada usaha penghematan energi listrik pada bangunan, khususnya untuk bangunan dengan sistem pengkondisian udara (AC). Tujuan dari penelitian ini adalah untuk mengetahui tingkat isolasi panas material dinding dari batako ban bekas dengan penambahan <em>super plasticizer</em>. Campuran batako antara semen : agregat (pasir dan potongan ban bekas) adalah 1 : 6 dengan menggunakan fas 0,6 dan dicetak dengan dimensi 34,5 x 12,5 x 9 cm. Sedangkan variasi kadar % ban bekas adalah 50%, 55%, 60%, 65%, 70% dan 75% terhadap volume agregat. Kadar <em>super plasticizer</em> digunakan sebesar 0,5% terhadap berat semen. Uji konduktivitas termal dilakukan dalam ruangan tertutup dengan sumber panas berupa lampu pijar 100 watt. Model uji konduktivitas termal dinding menggunakan metode modifikasi ASTM C177. Hasil penelitian menunjukkan bahwa berat satuan batako menurun jika kadar penambahan ban bekas meningkat. Sedangkan nilai konduktivitas termal (<em>k</em>) cukup rendah yaitu sebesar 0,22 W/m ^oC atau mengalami penurunan sebesar 80% dan memiliki kehilangan energi sebesar 1,56 watt/jam atau menghemat daya listrik sebesar 2,35 watt/jam dibandingkan dengan batako tanpa ban bekas.</p>","PeriodicalId":31510,"journal":{"name":"Dinamika Rekayasa","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135990463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Pengaruh Tektonik Terhadap Morfologi dengan Metode Perhitungan Geomorfologi Kuantitatif di Daerah Gapura Pemalang","authors":"Huzaely Latief Sunan, Gentur Waluyo, Asmoro Widagdo, FX Anjar Tri Laksono","doi":"10.20884/1.dr.2023.19.2.1420","DOIUrl":"https://doi.org/10.20884/1.dr.2023.19.2.1420","url":null,"abstract":"Aktivitas tektonik sangat erat hubungannya dengan pembentukan bentang alam (morfologi) pada suatu daerah. Lokasi penelitian mempunyai morfologi yang terkontrol oleh tektonik sesar turun, dengan adanya blok yang berupa tinggian dan dataran rendah. Studi ini bertujuan untuk mengetahui seberapa besar pengaruh tektonik (sesar turun) pada morfologi di lokasi. Penelitian ini menggunakan metode analisis geomorfologi kuantitatif yang ditujukan untuk mendapatkan data tingkat aktivitas tektonik yang ada pada daerah penelitian. Metode ini efektif untuk mengetahui terbentuknya morfologi dan struktur geologi yang mempengaruhi bentuk permukaan saat ini. Analisis pengaruh tektonik menggunakan <em>Ratio of valley Floor width to valley Height</em> (Vf) dan <em>Mountain Front Sinuosity</em> (Smf). Hasil analisis menunjukkan bahwa rata-rata Vf yaitu 0,19 yang memiliki akivitas tektonik kelas satu dan indikasi tingkat <em>uplift</em> tinggi dengan lembah berbentuk V. Sedangkan untuk Smf memiliki hasil rata-rata 1,45 sehingga memiliki aktivitas tektonik yang kuat dengan indikasi berasosiasi dengan bentangalam dataran lebar, lembah sempit dan perbukitan curam. Berdasarkan hasil tersebut lokasi studi termasuk ke dalam aktivitas tektonik yang kuat dengan didukung adanya data lapangan geologi struktur berupa sesar geser kanan dan sesar turun geser kiri yang saling memotong.","PeriodicalId":31510,"journal":{"name":"Dinamika Rekayasa","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135990467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Use of Expressions of Self Interjection and its Meaning on Social Media","authors":"R. Wahyuni, Mutiara Andayani Komara","doi":"10.35194/jd.v6i2.3125","DOIUrl":"https://doi.org/10.35194/jd.v6i2.3125","url":null,"abstract":"This article will describe various kinds of expressions of teenagers on social media such as Facebook, Instagram, Whatsapp, and others. The method used in this research is a descriptive method with a qualitative approach. The results of the study show that the majority of teenagers in Purwakarta use social media to share experiences through uploaded photos and statuses. Uploading self-expression through social media is carried out every day with high intensity. The expressions used generally function to express surprise or shock, pleasure, anger, sadness, and so on. The most used social media is Facebook. Adolescents' motivation in expressing themselves is due to the desire to express feelings and display personal photos as entertainment and to get responses from others. Their satisfaction is a source of pride in themselves. This satisfaction is generally influenced by the mood of teenagers who usually change. Self-expression for adolescents can also be interpreted as a place for self-existence driven by the desire to be known by many people (viral).Keywords: expression; interjection; social mediaAbstrak Artikel ini akan memaparkan berbagai macam ekspresi para remaja di media sosial seperti Facebook, Instagram, Whatsapp, dan yang lainnya. Metode yang digunakan dalam penelitian ini adalah metode deskriptif dengan pendekatan kualitatif. Hasil penelitian menunjukkan bahwa mayoritas remaja di Purwakarta menggunakan media sosial untuk berbagi pengalaman melalui foto dan status yang diunggah. Pengunggahan ekspresi diri melalui media sosial dilakukan setiap hari dengan intensitas yang tinggi. Ungkapan yang digunakan pada umumnya berfungsi untuk mengungkapkan   rasa kaget atau keterkejutan, rasa senang, rasa marah, rasa sedih, dan sebagainya. Media sosial yang paling sering digunakan adalah facebook. Motivasi remaja dalam mengeskpresikan diri karena adanya keinginan untuk mencurahkan perasaan dan menampilkan foto-foto pribadi sebagai hiburan dan agar mendapatkan respon dari orang lain. Kepuasan mereka menjadi kebanggaan terhadap dirinya sendiri. Kepuasan tersebut umumnya dipengaruhi oleh suasana hati remaja yang biasa berubah-ubah. Ekspresi diri bagi remaja bisa dimaknai pula sebagai ajang untuk esksistensi diri didorong oleh keinginan untuk dikenal banyak orang (viral). Kata kunci: ekspresi; interjeksi; media sosial.","PeriodicalId":31510,"journal":{"name":"Dinamika Rekayasa","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91273456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Realitas Sosial dalam Tiga Cerpen Indonesia","authors":"Iin Tri Widyastutik","doi":"10.35194/jd.v6i2.3322","DOIUrl":"https://doi.org/10.35194/jd.v6i2.3322","url":null,"abstract":"","PeriodicalId":31510,"journal":{"name":"Dinamika Rekayasa","volume":"17 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72472094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tindak Tutur dalam Tayangan Kanal Youtube WAW Entertaiment","authors":"Dyah Pratiwi","doi":"10.35194/jd.v6i2.3359","DOIUrl":"https://doi.org/10.35194/jd.v6i2.3359","url":null,"abstract":"","PeriodicalId":31510,"journal":{"name":"Dinamika Rekayasa","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84704731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluasi Kandidat Jagung Hibrida terhadap Cekaman Kekeringan pada Fase Perkecambahan menggunakan Polyethilene Glicol (PEG 6000)","authors":"Aprilia Aprilia, S. Suhartono","doi":"10.21107/rekayasa.v16i1.20907","DOIUrl":"https://doi.org/10.21107/rekayasa.v16i1.20907","url":null,"abstract":"Low maize productivity on Madura Island is caused by low water availability. One of the strategies used to overcome the problem of low maize productivity in Madura is to assemble maize varieties resistant to drought stress. This study aims to determine the resistance of hybrid maize candidates in the germination phase using Polyethylene Glycol (PEG 6000). All genotypes were germinated using the paper roll test in plastic method, then moistened using a mixture of aqudesh with PEG 6000 according to the treatment. The data obtained was analyzed using the Analysis of Variance (ANOVA) at the 5% level, and if it shows a significant effect then the Duncan Multiple Range Test (DMRT) is carried out at the 5% level. The results showed that the corn genotype and PEG 6000 concentration affected all the parameters tested, so there were character differences between one genotype and the other. The genotypes resistant to drought stress in the germination phase using PEG 6000 were G1 and G5. The moderately tolerant genotypes were G3, G7, and G8, while the genotypes sensitive to drought stress were G2, G4, G6, G9, and G10.","PeriodicalId":31510,"journal":{"name":"Dinamika Rekayasa","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85439694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seleksi Tanaman Jagung Toleran pada Cekaman Kekeringan","authors":"Achmad Syauqi, Achmad Amzeri","doi":"10.21107/rekayasa.v16i1.20906","DOIUrl":"https://doi.org/10.21107/rekayasa.v16i1.20906","url":null,"abstract":"","PeriodicalId":31510,"journal":{"name":"Dinamika Rekayasa","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84842742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}