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Contact Name
Ari Fadli
Contact Email
dinarek@unsoed.ac.id
Phone
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Journal Mail Official
dinamika.rekayasa@gmail.com
Editorial Address
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Location
Kab. banyumas,
Jawa tengah
INDONESIA
Jurnal Ilmiah Dinamika Rekayasa (DINAREK)
ISSN : 18583075     EISSN : 25276131     DOI : -
Core Subject : 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 3 Documents
Search results for , issue " Vol 7, No 1 (2011): Dinamika Rekayasa - Februari 2011" : 3 Documents clear
Model Evapotranspirasi Pada Vegetasi Dengan Ketebalankanopi Yang Bervariasi Yanto, Yanto
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.2011.7.1.43

Abstract

Evapotranspiration plays important key role on hydrological cycle and water balance in water catchment.PenmannMonteithformula expresses evapotranspiration rate which is governed by available solar radiation, characteristics of vegetation represented by aerodynamic resistance and stomata resistance.Canopy layer density isa characteristic of vegetation that influence the amount of solar radiation transferred and received by layers withinand underneath canopy. This article will describe model of evapotranspiration using Penman-Monteith formula on vegetation with different canopy layer assuming the Leaf Area Index (LAI) is constant.The model is applied onthe vegetation with canopy layer (N) is 3 and 10. The result shows that evapotranspiration model using Penman-Monteith formula is able to estimate evapotranspiration rate with margin error less than 1%. Assuming LAI is constant, the differenceof canopy layer numberproduces insignificant effect to evapotranspiration rate. Testing the model using N=3 and N=10 results margin error less than 1% aswell.
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..
Uji Kelayakan Jaringan Lokal Universitas Jenderal Soedirman Untuk Implementasi VoIP Ridwan, Muhamad; Nugraha, Azis Wisnu Widhi; Susilawati, Hesti
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.2011.7.1.44

Abstract

UNSOED has LAN connection which covers almost all of its units, with minimum bandwidth consupmtionat anaverage of275,318 Kbpsfrom a total of 3 Mbpsso we may apply VoIP system in order to replace voice communication system whichis still using PSTN and PABX. Thereforewe need to know aboutjitter and packet loss ofLAN,and also the codec needs tobedetermined due to voice quality expected and also bandwidth consumpted. Measurementscarried out in two scenariosbased on topologies used in UNSOED (star and ring), in the first scenario (star and ring)server placed on serverfarm meanwhile the second scenario(ring) server placed on Pertanian node. Codec adjusted to the available bandwidth capacity and total of phone number that has to handled. The result show that 0,759 ms jitter obtained from scenario 1 and 0,513ms from scenario 2, both of them included in good category with 0-20 ms of range value, otherwise 0% of packetloss obtained from both scenarios these indicated that LANincluded in good category. There is iLBCcodec with 30 ms packet size which is the mosteconomic on bandwidthcost among G.729, G.711, and iLBC (20 ms), because it cost1995,84Kbpsof total bandwidth usedforhandling 140 phone number. Beside that, it has good voice quality with 4,138996 MOS value. So if we use iLBC (30 ms) codec on the VoIPsystem, there will be still a lot of free bandwidth which can used for other applications, it is about 695,873 Kbps(worst condition) and also get a good-voice quality-VoIP.

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