cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Ari Fadli
Contact Email
dinarek@unsoed.ac.id
Phone
-
Journal Mail Official
dinamika.rekayasa@gmail.com
Editorial Address
-
Location
Kab. banyumas,
Jawa tengah
INDONESIA
Jurnal Ilmiah Dinamika Rekayasa (DINAREK)
Published by Universitas Jenderal Soedirman
ISSN : 18583075     EISSN : 25276131     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering
DINAREK is a scientific journal published by Engineering Departement of Jenderal Soedirman University. DINAREK is a peer reviewed nasional journal in Indonesian, published two issues per year (February and August). DINAREK is to publish high-quality articles dedicated to all aspects of the latest outstanding developments in the field of engineering. Its scope encompasses the engineering of signal processing, electrical (power), electronics, instrumentation & control, telecommunication, Geological Engineering, Civil Engineering, Computing and informatics, and Industrial Engineering.
Arjuna Subject : -
Articles 270 Documents
 1   2   3   4   5 
Penyelesaian Permasalahan Penjadwalan Aktivitas Proyek dengan Batasan Sumber Daya Menggunakan Metode Cross Entropy Maria Krisnawati
Dinamika Rekayasa Vol 10, No 1 (2014): Jurnal Ilmiah Dinamika Rekayasa - Februari 2014
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2014.10.1.58

Abstract

Project scheduling is essential to be planned before activities. Standard methods of project scheduling based on precedence constraints scheduling events and the assumption that resources are not unlimited capacity. But in fact the project activity has resource limits. The main objective is to minimize the total duration of the project with precedence constraints and resource constraints for all project activities. Many optimization methods are used to improve the quality of scheduling and speed up the calculation time. This paper proposed the use of Cross Entropy (CE) method to solve resource constraints project scheduling problem, as well as comparing the advantages and disadvantages between the CE methods with Differential Evolution (DE) method. The purpose CE method consist of four critical steps including generating a sample of random solution, calculating the performance according to the specific fitness function, selecting elite sample and finally updating the previous parameters to get a better sample in the next iteration. To speed up the computation time, in this study decrease the number of samples for each iteration in Cross Entropy algorithm. Numerical experiments with several data sets from the Project Scheduling library (PSPLIB) showed that CE can provide the optimal total duration of the project same as the DE with calculation time is faster than DE.
Analisis Perubahan Tekanan Air Pori pada Tanah Lunak akibat Beban Trial Embankmentdengan menggunakan Plaxis Versi 7.2. Patria, Adhe Noor; Suryolelono, Kabul Basah; Suhendro, Bambang
Dinamika Rekayasa Vol 5, No 1 (2009): Dinamika Rekayasa - Februari 2009
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2009.5.1.16

Abstract

Soft soil could be found easily in Indonesia. Constructions that built on this soil; such as embankment; face some obstructions, for instance long period consolidation, difficult soil compaction, unstable slope of embankment and high settlement value for long period. Consolidation related to particle size of soil grains, soil permeability coefficient and pore size between soil particles. This research was carried out with numerical simulation and aimed to analyze the change in pore water pressures in soft soil due to embankment load.Numerical simulation was carried out by using Plaxis version 7.2. The time periods for construction and consolidation were the same with field measurement values. Total times for both stages were 102 days. Material model used were Mohr Coulomb Model and input material model that were used were the same with filed measurement values.The results showed that at the end of construction stage there always an increasement in pore water pressure (excess pore water pressure existed) and the decreasement of pore water pressure occurred in consolidation period. Excess pore water pressures of soil below embankment were at area A, depth 0,5 was -22,8093 kPa, at area B (depth 9 m) was -21,5576 kPa and at area C (depth 13 m) was -14,159 kPa.
H-Bridge Inverter denganBoost-up Chopper sebagai Pengondisi DayaPhotovoltaic Suroso, Suroso
Dinamika Rekayasa Vol 7, No 2 (2011): Dinamika Rekayasa - Agustus 2011
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2011.7.2.48

Abstract

This paper discusses anapplication of H-bridge inverter equipped with boost-up chopper circuits as photovoltaic power conditioner in stand-alone operation. First, the boost-up chopper circuits working to regulate the DCoutput voltage of photovoltaic with proportional-integral (PI) controller is described. Then, the H-bridge inverter converting the DC output voltage of chopper circuits become AC voltage waveform is presented. The uni-polar sinusoidal pulse-width modulation technique (SPWM) is appliedto the inverter circuits to produce sinusoidal output current waveform. The simulation results of the proposed photovoltaic system for different output voltages, and transient voltage wave forms are presented in the paper. The results show that the boost-up chopper circuits is effective to be appliedin the photovoltaic system to obtain stable DC output voltage of the photovoltaic, and AC voltage waveform generated bythe inverter circuits.
Kajian Sifat-Sifat Reologi Aspal dengan Penambahan Limbah Ban Bekas Indriyati, Eva Wahyu; Susanto, Hery Awan
Dinamika Rekayasa Vol 11, No 1 (2015): Dinamika Rekayasa - Februari 2015
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2015.11.1.92

Abstract

Salah satu usaha mengurangi kerusakan jalan akibat beban yang berlebih (overloading) adalah menaikan mutu campuran beraspal melalui peningkatan mutu aspal (bitumen). Untuk meningkatkan mutu aspal dapat dilakukan dengan menambahkan bahan aditif seperti polimer, tetapi harga polimer di Indonesia masih relatif mahal. Penggunaan limbah ban bekas sebagai bahan aditif dalam meningkatkan mutu aspal merupakan usaha inovatif dalam material perkerasan jalan dan juga dapat mengurangi kerusakan lingkungan akibat limbah ban bekas. Pengujian yang dilakukan pada studi ini adalah sifat-sifat fisik aspal meliputi : penetrasi, berat jenis, titik lembek, daktilitas, serta titik nyala dan titik bakar. Penambahan limbah ban bekas pada aspal penetrasi 60/70 secara garis besar akan meningkatkan kekerasan aspal. Penggunaan limbah ban bekas pada aspal penetrasi 60/70 ini memberikan dampak positif sekaligus negatif. Dampak positif yang timbul adalah penambahan limbah ban bekas akan meningkatkan ketahanan terhadap alur, dikarenakan tingkat kekerasan aspal yang bertambah. Hal ini dibuktikan dengan penurunan nilai penetrasi dari 66,5 dmm pada aspal penetrasi 60/70 murni, menjadi 47,05 dmm pada aspal penetrasi 60/70 dengan penambahan ban bekas 3%. Sedangkan dampak negatif yang timbul adalah penambahan limbah ban bekas akan menurunkan ketahanan terhadap retak karena tingkat kekenyalannya berkurang. Hal ini ditunjukkan dengan penurunan nilai daktilitas dari > 100 cm pada aspal penetrasi 60/70 murni menjadi hanya 68,5 cm pada aspal penetrasi 60/70 dengan penambahan 3% limbah ban bekas.
Perkuatan Fondasi Telapak Dengan Turap Sumiyanto, Sumiyanto; Nugroho, Paulus Setyo
Dinamika Rekayasa Vol 7, No 1 (2011): Dinamika Rekayasa - Februari 2011
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2011.7.1.39

Abstract

Reinforcement Foundation is a method to increase the capacity of supporters, so they can support the load of the building. This is required for buildings located on soft ground. Strengtheningthis foundation is also needed if the structure above will be increased so that the burden of building work increased. In this study, attempted to strengthen the foundations of the method by placing the sheet piles on the side of the foundation. Tests performed on two-dimensional model in thelaboratory, by comparing the carrying capacity of thefoundation with sheet piles and without sheet piles. Strengthening the foundation carried outwith3 (three) length variation of plaster that is: L / B = 0.75, L / B = 1.00 and L / B = 1.25. B, and 3 (three) variations in thelocation of plaster, which is in distance S /B = 0.5, S / B = 1.0 andS / B = 1.5. Test results showed that the installation of sheet piles can increase the capacity of foundation support. The results ofthis study showed the longer the higher the sheet piles supporting capacity building, with the results of 33%, 55% and (80% -100%), one each for L/ B = 0.75; 1.00 and 1.25. However, increasedcapacity is not much influenced by the location of plaster especially for short plasterof L / B = 0,75 and L /B = 1,00. While for L/ B =1,25, where the sheet piles getting closeto the foundation, increase capacity increased aswell..
Analisa Kelayakan Teknis, Pasar dan Finansial Pengolahan Salyca dalam Sirup Skala Mikrodi Kabupaten Banjarnegara Niko Siameva Uletika; Maria Krisnawati
Dinamika Rekayasa Vol 10, No 2 (2014): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2014
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2014.10.2.83

Abstract

Salak dan carica merupakan hasil pertanian holtikultura unggulan Kabupaten Banjarnegara. Harga salak tidak stabil sepanjang tahun. Industri pengolahan salyca (salak dan carica) dibutuhkan untuk mengurangi fluktuasi harga salak dan mengoptimalkan potensi carica di Kabupaten Banjarnegara. Salyca dalam sirup belum pernah dianalisa dan diproduksi. Penelitian bertujuan mengetahui kelayakan teknis, pasar dan finansial pengolahan salyca dalam sirup skala Industri Mikro Kecil di Kabupaten Banjarnegara. Kelayakan teknis menganalisa teknologi proses pengolahan, investasi peralatan, kebutuhan bahan baku, dan tenaga kerja. Kelayakan pasar menganalisa kebutuhan konsumen. Kelayakan finansial dengan metode analisis sensitivitas, manfaat dan biaya bertujuan mengetahui laba rugi, aliran kas, Net Present Value (NPV), Internal Rate of Return (IRR), Pay Back Period (PBP) dan Profitability Index (PI) dengan perubahan kapasitas bahan baku. Analisa menunjukkan usaha layak secara pasar, finansial dan teknis. Kelayakan aspek pasar ditunjukkan oleh 72% dari 99 responden, lebih menyukai produk salyca dalam sirup dan 28% responden lebih menyukai salak dalam sirup. Responden memilih produk dikemas dalam cup plastik dan dapat dibeli di mini market, tempat wisata dan toko oleh–oleh. Kelayakan finansial diperoleh pada kapasitas minimum bahan baku 18 Kg perhari. Kelayakan teknis ditunjukkan pada ketersediaan bahan baku. Kapasitas bahan baku dan tenaga kerja meningkat bertahap selama tiga tahun pertama.
Optimasi Beban AS Truk Untuk Meminimalkan Biaya Transportasi Dan Kerusakan Konstruksi Jalan (Studi Kasus Ruas Jalan Solo-Kartosura-Boyolali Provinsi Jawa Tengah) Sugiyanto, Gito
Dinamika Rekayasa Vol 1, No 1 (2005): Dinamika Rekayasa - Agustus 2005
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2005.1.1.7

Abstract

This research is aimed at defining the optimum axle load of trucks, in a way to produce both minimum transportation cost and damage construction road. Apart from formulating ways to minimize government expenditures in handling road maintenance, this research has investigated a new paradigm as an alternative of road maintenance considering the principles of cost recovery. This means that overloading trucks will have to bear Road User Tax-a tax reflecting their destructive impacts on roads.The result indicate that: Medium good vehicles have an optimum load of 7,500 ton and minimum transport cost of Rp 19.275,54 per vehicle-trip, Heavy good vehicle (HGV) trucks 2 axles 13 ton have an optimum load of 12,667 ton and minimum transport cost of Rp 37.735,21 per vehicle-trip, HGV trucks 3 axles 20 ton have an optimum load of 21,00 ton and minimum transport cost of Rp 52.730,36 per vehicle-trip and HGV trucks 4 axles have an optimum load of 26,50 ton and minimum transport cost of Rp 45.014,25 per vehicle-trip. The average of Road User Tax in effort of the pure cost recovery for: Medium good vehicles have Rp 20,89 per vehicle-trip, HGV trucks 2 axles 13 ton have Rp 195,68 per vehicle-trip, HGV trucks 2 axles 13 ton have Rp 142,96 per vehicle-trip, and HGV trucks 2 axles 13 ton have Rp 489,66 per vehicletrip. A trip in this case is 25,30 km.
Peningkatan Efisiensi Penggunaan Bahan Bakar Kendaraan Bermotor Dengan Melakukan Pencarian Jarak Terdekat Menggunakan Jaringan Syaraf Tiruan Hopfield Di Wilayah Purwokerto Agung Mubyarto; Hesti Susilawati
Dinamika Rekayasa Vol 6, No 1 (2010): Dinamika Rekayasa - Februari 2010
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2010.6.1.30

Abstract

This proposed research concern with application of continuous Hopfield neural networks for shortest path routing in a given map, in this case Purwokerto city’s map had choosen as an example. The method that was used in this research based on the ability of continuous Hopfield neural networks for representing their neuron as choosen vertices in the given map. The result shows that the networks can produce optimal route for such source and destination node pairs. As the product of this research, we have knowledge about the shortest way from one to another location at Purwokerto, so we can increase the efficiency on fuel use by using this route
Identifikasi Lapisan Geologi Bawah Permukaan Berdasarkan Data Geomagnetik di Sungai Logawa Banyumas Sukmaji Anom Raharjo; Sehah Sehah; Adi Candra
Dinamika Rekayasa Vol 10, No 1 (2014): Jurnal Ilmiah Dinamika Rekayasa - Februari 2014
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2014.10.1.63

Abstract

Identification of geological resources can be done either using surface mapping and cross sectional stratigraphy measurement or geophysical approximation beneath the earth surface. Geomagnetic exploration related to the existing of gold mineral begins with the total magnetic field intensity measurements at 173 locations was scattered in 109.196970 - 109.207580E and 7.448830 - 7.454110S. Interpretation from processing of data obtained four anomalous object, which is defined as fine-medium sandstone (χ= 0.0015 cgs units), coarse sandstone and compact (χ= 0.0035 cgs units), igneous basalt-andesite old Slamet (χ= 0.0085 cgs units), and the complex bedrock (χ= 0.0145 cgs units). The presence of gold mineralization in the rock throughout geomagnetic surveys used to identification of subsurface geological which is interpreted from the processing data that indicated the presence of gold in association with sedimentary (sandstone) is often referred to as sediment-hosted.
Penentuan Pembebanan Maksimum Transformator Daya Yang Menyuplai Personal Computer (PC) Prasetijo, Hari; Susilawati, Hesti
Dinamika Rekayasa Vol 5, No 2 (2009): Dinamika Rekayasa - Agustus 2009
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2009.5.2.21

Abstract

Personal computer is electronic equiment that use solid state device, such as rectifiers, so it to be source of harmonic current. Harmonic current is sinusoidal current with multiple frequency of fundamental current which will be increase power losses because increasing effective current and frequency. In electric distribution system, transformer is component with highest power losses. They are consit of DC losses (Pdc) that influence by effective current, eddy current (PEC) and other stray losses (POSL) which influence by effective current and their frequency. This study involved increasing transformer power losses with assume that transformer supply in full load condition to personal computer. Analyzes following IEEE Std. C57.110-1998 with comparing determination maximum transformer loading use current spectrum from spectrum analyzer equipment and conversion produce Mathlab from current wave time domain to current wave frequency domain. The result are maximum transformer loading is 97,84 use spectrum analyzer and 97,84 use Mathlab sofware.

Page 2 of 27 | Total Record : 270

 1   2   3   4   5 

Filter by Year

2005 2023


Reset
Filter By Issues
All Issue Vol 19, No 2 (2023): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2023 Vol 19, No 1 (2023): Jurnal Ilmiah Dinamika Rekayasa - Februari 2023 Vol 18, No 2 (2022): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2022 Vol 18, No 1 (2022): Jurnal Ilmiah Dinamika Rekayasa - Februari 2022 Vol 17, No 2 (2021): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2021 Vol 17, No 1 (2021): Jurnal Ilmiah Dinamika Rekayasa - Februari 2021 Vol 16, No 2 (2020): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2020 Vol 16, No 1 (2020): Jurnal Ilmiah Dinamika Rekayasa - Februari 2020 Vol 15, No 2 (2019): Dinamika Rekayasa - Agustus 2019 Vol 15, No 2 (2019): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2019 Vol 15, No 1 (2019): Dinamika Rekayasa - Februari 2019 Vol 15, No 1 (2019): Jurnal Ilmiah Dinamika Rekayasa - Februari 2019 Vol 14, No 2 (2018): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2018 Vol 14, No 2 (2018): Dinamika Rekayasa - Agustus 2018 Vol 14, No 1 (2018): Dinamika Rekayasa - Februari 2018 Vol 14, No 1 (2018): Jurnal Ilmiah Dinamika Rekayasa - Februari 2018 Vol 13, No 2 (2017): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2017 Vol 13, No 2 (2017): Dinamika Rekayasa - Agustus 2017 Vol 13, No 1 (2017): Dinamika Rekayasa - Februari 2017 Vol 13, No 1 (2017): Jurnal Ilmiah Dinamika Rekayasa - Februari 2017 Vol 12, No 2 (2016): Dinamika Rekayasa - Agustus 2016 Vol 12, No 2 (2016): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2016 Vol 12, No 1 (2016): Jurnal Ilmiah Dinamika Rekayasa Februari 2016 Vol 12, No 1 (2016): Dinamika Rekayasa Februari 2016 Vol 11, No 2 (2015): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2015 Vol 11, No 2 (2015): Dinamika Rekayasa - Agustus 2015 Vol 11, No 1 (2015): Dinamika Rekayasa - Februari 2015 Vol 11, No 1 (2015): Jurnal Ilmiah Dinamika Rekayasa - Februari 2015 Vol 10, No 2 (2014): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2014 Vol 10, No 2 (2014): Dinamika Rekayasa - Agustus 2014 Vol 10, No 1 (2014): Jurnal Ilmiah Dinamika Rekayasa - Februari 2014 Vol 10, No 1 (2014): Dinamika Rekayasa - Februari 2014 Vol 9, No 2 (2013): Dinamika Rekayasa - Agustus 2013 Vol 9, No 2 (2013): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2013 Vol 9, No 1 (2013): Dinamika Rekayasa - Februari 2013 Vol 9, No 1 (2013): Dinamika Rekayasa - Februari 2013 Vol 8, No 2 (2012): Dinamika Rekayasa - Agustus 2012 Vol 8, No 2 (2012): Dinamika Rekayasa - Agustus 2012 Vol 8, No 1 (2012): Dinamika Rekayasa - Februari 2012 Vol 8, No 1 (2012): Dinamika Rekayasa - Februari 2012 Vol 7, No 2 (2011): Dinamika Rekayasa - Agustus 2011 Vol 7, No 2 (2011): Dinamika Rekayasa - Agustus 2011 Vol 7, No 1 (2011): Dinamika Rekayasa - Februari 2011 Vol 7, No 1 (2011): Dinamika Rekayasa - Februari 2011 Vol 6, No 2 (2010): Dinamika Rekayasa - Agustus 2010 Vol 6, No 2 (2010): Dinamika Rekayasa - Agustus 2010 Vol 6, No 1 (2010): Dinamika Rekayasa - Februari 2010 Vol 6, No 1 (2010): Dinamika Rekayasa - Februari 2010 Vol 5, No 2 (2009): Dinamika Rekayasa - Agustus 2009 Vol 5, No 2 (2009): Dinamika Rekayasa - Agustus 2009 Vol 5, No 1 (2009): Dinamika Rekayasa - Februari 2009 Vol 5, No 1 (2009): Dinamika Rekayasa - Februari 2009 Vol 4, No 2 (2008): Dinamika Rekayasa - Agustus 2008 Vol 4, No 2 (2008): Dinamika Rekayasa - Agustus 2008 Vol 4, No 1 (2008): Dinamika Rekayasa - Februari 2008 Vol 4, No 1 (2008): Dinamika Rekayasa - Februari 2008 Vol 3, No 2 (2007): Dinamika Rekayasa - Agustus 2007 Vol 3, No 2 (2007): Dinamika Rekayasa - Agustus 2007 Vol 3, No 1 (2007): Dinamika Rekayasa - Februari 2007 Vol 3, No 1 (2007): Dinamika Rekayasa - Februari 2007 Vol 2, No 1 (2006): Dinamika Rekayasa - Februari 2006 Vol 2, No 1 (2006): Dinamika Rekayasa - Februari 2006 Vol 1, No 1 (2005): Dinamika Rekayasa - Agustus 2005 Vol 1, No 1 (2005): Dinamika Rekayasa - Agustus 2005 More Issue