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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 6 Documents
 1 
Search results for , issue "Vol 5, No 1 (2009): Dinamika Rekayasa - Februari 2009" : 6 Documents clear
Prediksi Data Runtun Waktu Menggunakan Jaringan Syaraf Tiruan Agung Mubyarto
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.2009.5.1.20

Abstract

This research concerns about application of artificial neural networks (ANN) for predicting time series data. By modifying perceptron’s activation function with linear function, we got linear networks. In order to predict time series data, these linear networks combine with adaptive LMS algorithm. And then we had completed this model with time delay function to accommodate past data in time series. The data that used in the test had varied in frequency and sampling time. Results of the test had shown that the networks work properly to predict the data series.
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.
Potensi Batuan Induk Batu Serpih dan Batu Lempung di Daerah Watukumpul Pemalang Jawa Tengah Sachrul Iswahyudi; Asmoro Widagdo
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.2009.5.1.17

Abstract

Shale and claystone of Watukumpul Area have capability to become the source rock of hydrocarbon because of the ability to conserve the organic material better. Potential of the rock become source rock is depend on its maturity and total organic carbon.This research test eight example of rock to analysis their total organic carbon (TOC) and rock eval pyrolisis. Only one sample is claystone, while the seven others are shales. The analyses provide data of total organic carbon, hydrogen index, and vitrinite reflectances which was used to interpret source rock potential of research area.Through this research is known that the organic material content of shale and claystone of research area own the fair level of total organic carbon. Organic material is included Kerogen Type III with the origin of land organism or plant.These kerogens of research area prefer to produce gas or gas prone. Organic material or kerogens have reached the matured phase to generate hydrocarbon (mature level). Special follow the rock sample came from Location 8 which have over mature level. Its high maturity is suspect have relationship with the intrusion of diorite igneous rock in this research area. Further research is needed to investigate the relationship between diorite intrusion and organic material in this research area.
Analisis Penyebab Tanah Longsor di Kalitlaga Banjarnegara Apriyono, Arwan
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.2009.5.1.18

Abstract

Indonesia is one country that has many areas vulnerable to landslides. To the present time, there are many victims of disasters caused by landslides in Indonesia. To handle the landslide disaster, requires some knowledge about the causes, mechanisms and appropriate mitigation efforts against disasters mentioned above. Causes and mechanisms of landslides is necessary in determining the  mitigation in order to the victim can be minimized.This paper is an analytical study of the causes of landslides at Kalitlaga Village, Pagentan Sub district, Banjarnegara Regency. Causes of  landslides determined by analyzing the results of field investigation and supporting data (topographic and geological maps at the research location). The analysis results, also be used to determine the proper method of handling landslides in the area. Based on the results investigation field, it can be concluded that the main cause of landslides at Kalitlaga is topographic factors. Kalitlaga Village is located in the mountain range with a fairly steep slope ranges from 20o - 45o. The other cause of landslides is a poor drainage system in the village. Besides, based on geological maps, geological structure in the area included breksi rock in tapak formation, which has a sandstone soil type, breksi andesite composition and the organic soil. The characteristics of this soil type have a low cohesion value with a high permeability, so that condition also supports the occurrence of landslides. Kalitlaga landslide in the village can be minimized by manage the drainage system. Besides, efforts such as cutting of the slopes also need to be done at some location.
Pengaruh Variasi Jumlah Data Pelatihan SVM Terhadap Unjukkerja pada Sistem Pengenalan Pola Tulisan Tangan Aksara Jawa Nglegeno Azis Wisnu Widhi Nugraha
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.2009.5.1.19

Abstract

Support Vector Machines (SVM) is one of many classification methods implemented on pattern recognition, including handwritten character recognition system. Numbers of traning set will affect the performance of the recognition system. A basic Jawanessehandwritten character recognition system based on SVM used to show the effect of training set numbers variation on system performance. The experiment result indicating that SVM has good generalization on limiting training set (on a data set, 30% data used for training set can give more than 90% success rate on all data set).
Perkuatan Fondasi Telapak Dengan Turap Sumiyanto Sumiyanto; Paulus Setyo Nugroho
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.2009.5.1.15

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. Strengthening this 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 the laboratory, by comparing the carrying capacity of  the foundation with sheet piles and without sheet piles. Strengthening the foundation carried out with 3 (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 the location of plaster, which is in distance S / B = 0.5, S / B = 1.0 and S / B = 1.5. Test results showed that the installation of sheet piles can increase the capacity of foundation support. The results of this 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, increased capacity is not much influenced by the location of plaster especially for short plaster of L / B = 0,75 and L / B = 1,00. While for L / B =1,25, where the sheet piles getting close to the foundation, increase capacity increased as well.

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