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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 9, No 1 (2013): Dinamika Rekayasa - Februari 2013" : 6 Documents clear
Model Matematis Prediksi Produk Sukses Berdasarkan Orientasi Fungsional Emosional Produk Niko Siameva Uletika
Dinamika Rekayasa Vol 9, No 1 (2013): Dinamika Rekayasa - Februari 2013
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2013.9.1.99

Abstract

The risk of product loss can be minimized by mathematical model of predictive success or failure of a product at the early design stage. Model is build from 30 graphics of strategy canvas industries.Canvas strategy contains success factors product overview. This research starts with standardise canvas intervaland factor successdescription. Next step is factors succesclasification, based on functionalemotional product orientation. The result of it are 66 data sets. Data set are constructed based on value innovation concept. Every data set consist ofone price factor, one innovation factor and one factor of succes indicator. The Mathematical model from desimal data obtained by Ordinary LeastSquare (OLS) estimation parameter method. Binary data obtained by Maximum Likelihood Estimator (MLE). Mathematical model selection base onmodel and coeficient significant (α=0.05). While model significances decimal data are then validated by One Way Analysis of Variance (ANOVA), binary data validated by Hosmer and Lemeshow analysis to testgoodness of fit of the model. Coefficient of significances are tested with t and wald statistic. Finally, mathematical model required is derived from prediction capability relied on R squareAdjusted for decimal data and R square Nagelkerke analysis for binary data. The result of this research is model with prediction capability up to 70%. Thereare three models developed, new emotional model with 74.1% predictioncapability, functional velocity model (73.1%), and functional capability (70.8%).
Analisis Balok Beton Bertulang Tampang T Yang Diperkuat Dengan Wire Rope Menggunakan Program Response-2000 Dan Metode Pias Anggun Tri Atmajayanti
Dinamika Rekayasa Vol 9, No 1 (2013): Dinamika Rekayasa - Februari 2013
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2013.9.1.100

Abstract

This study aims at finding out the comparison of the results of analysis using Response-2000 and discrete element method and of experiment on T-section reinforced concrete beam strengthened using wire rope. The modeling was made on two T-section beams, where one beam was without strengthening and another beam was with strengthening using two wire ropes of 10mm. Results indicate that the ratios of increase in flexural capacity as results of the analysis using Response-2000 and discrete element method compared to results of the experiment for the control beam were 1.01 and 1.04, respectively, while the ratios of decrease for the strengthened beam were 0.84 and 0.87, respectively. A ductility index for the control beam as result of the analysis using Response- 2000 and discrete element method decreased compared with results of the experiment with ratios of 0.31 and 0.60, respectively. A ductility index for the strengthened beam as result of the analysis using Response-2000 and discrete element method increased compared with results of the experiment with ratios of 1.19 and 1.92, respectively. The ratios of increase in the initial stiffness as result of the analysis using Response-2000 and discrete element method compared with result of the experiment for the control beam were 2.85 and 3.33, respectively, and the ratios of increase in equivalent stiffness as result of the analysis using Response-2000 and discrete element method were 1.62 and 1.42, respectively. The ratios of increase in initial stiffness for the strengthened beam as result of the analysis using Response-2000 and discrete element method compared with result of the experiment were 3.70 and 5.26, respectively, while those for equivalent stiffness were 3.16 and 2.75, respectively.
Reduksi Dimensi Saluran Drainase Akibat Keberadaan Sumur Resapan Pada Jaringan Drainase Maguwoharjo – Wedomartani, Sleman, Yogyakarta Sanidhya Nika Purnomo
Dinamika Rekayasa Vol 9, No 1 (2013): Dinamika Rekayasa - Februari 2013
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2013.9.1.95

Abstract

Land use in development area has to be followed by an integrated management of drainage environtment. The concept of drainage design that quickly remove the water from the area only able to reduce the flood, but unable to preserve groundwater. It is necessary to concept the drainage design in environtment perception as an effort to preserve groundwater. One of the effort to handling the drainage in environtment perception is the use of recharge well adjacent to the drainage channel. The result of this research showed that the run off discharge prior to recharge wells can reach 8 m3/s on residential area, and in average 3 m3/s on wetland and upland area. After the recharge well, the run off discharge capable reduce in average 30%, the drainage channel on residential area can reduce in 50%, and in average 30% on wetland and upland area.
Analisis Probabilitas Kecepatan Angin untuk Pesisir Cilacap dengan Menerapkan Distribusi Weibull dan Rayleigh Wahyu Widiyanto
Dinamika Rekayasa Vol 9, No 1 (2013): Dinamika Rekayasa - Februari 2013
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2013.9.1.96

Abstract

Wind characteristics especially the event probability have been more studied in the relation to wind energy availability in an area. Nevertheless, in the relation to coastal structure, it is still rare to be unveiled in a paper particulary in Indonesia. In this article, therefore, it is studied probability distribution commonly used to wind energy analysis i.e. Weibull and Rayleigh distribution. The distribution is applied to analyze wind data in Cilacap Coast. Wind data analyzed is from Board of Meteorology, Climatology and Geophysics, Cilacap branch, along two years (2009 – 2011). Mean, varians and standard deviation are founded to calculate shape factor (k) and scale factor (c) which must be available to arrange distribution function of Weibull and Rayleigh. In the region, it gains a result that wind speed probabilities follow Weibull and Rayleigh function fairly. Shape parameter value has been gotten k = 3,26, while scale parameter has been gotten respectively c = 3,64 for Weibull and Cr = 2,44 for Rayleigh. Value of k ≥ 3 indicates the region has regular and steady wind. Besides, mean speed of wind is 3,3 m/s.
Studi Pendahuluan Perubahan Garis Pantai Selama Zaman Kuarter di Daerah Kroya sampai Binangun Kabupaten Cilacap-Jawa Tengah Widagdo, Asmoro; Setijadi, Rachmad
Dinamika Rekayasa Vol 9, No 1 (2013): Dinamika Rekayasa - Februari 2013
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2013.9.1.97

Abstract

Cilacap coast line is a part of southern coast of Java at Cilacap Regency, Central Java. Topographic and satellite image observation shown some ancient coast lines behind the modern coast lines. How many of the coast lines which have formed before the modern coast lines is the question to be answered. This research is the preliminary effort to determine the direction of coast line development and the amount of coast lines which have formed before the modern ones. This preliminary research of the ancient coast lines is done by two stages of work that are studio and field work. Studio work was done by observation and interpretation of topographic map, land use map, Google Earth image and SRTM image. At this stage of work was made an ancient coast lineaments map and geomorphic profiles of the research area. To the results of the interpretation which have been done then taken a field work verification by ground check. Interpretation to the coast lines of the research area has resulted 24 coast lines. Ancient coast lines lineament of the research area is in line with the modern ones which have east-west lineament and prograde from the north to southward.
Kuat Tekan Dan Kuat Tarik Belah Sebagai Nilai Estimasi Kekuatan Sisa Pada Beton Serat Kasa Aluminiumakibat Variasi Suhu Wariyatno, Nanang Gunawan; Haryanto, Yanuar
Dinamika Rekayasa Vol 9, No 1 (2013): Dinamika Rekayasa - Februari 2013
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2013.9.1.98

Abstract

This study was aimed to determine influence of temperature variation to the compressive strength and split cylinder strength of aluminium wire-mesh fibre concrete. Specimen was concrete cylinder with 15 cm in diameter and 30 cm in high, and the volume fraction of aluminium wire-mesh fibre was specified equal to 0.2%. Temperature variations applied in this research were 25oC (room temperature), 400oC and 800oC. The result showed that increasing of temperature had caused compressive strength reduction.Compressive strength at temperature 400oC and 800oC for both normal concrete and wire-mesh fibre concrete were equal to 22.04%, 39.21%, 21.68% and 45.81%. Split cylinder test at temperature 400oC and 800oC for both normal concrete and wire-mesh fibre concrete showed reduction which were equal to 20.36%, 51.27%, 21.98% and 56.30%. On the other hand modulus of elasticity reduction at temperature 400oC and 800oC for both normal concrete and wire-mesh fibre concrete were 2.20%, 65.22%, 6.79% and 61.33%, where all of tests werecompared to normal concrete and wire-mesh fibre concrete at room temperature (25oC).

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