IPTEK Journal of Proceedings Series
IPTEK Journal of Proceedings Series publishes is a journal that contains research work presented in conferences organized by Institut Teknologi Sepuluh Nopember. ISSN: 2354-6026. The First publication in 2013 year from all of full paper in International Conference on Aplied Technology, Science, and Art (APTECS). It publish one time a year after the held of APTECS event.
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1,079 Documents
<![CDATA[Mapping Portfolio IT Investment by Perception Level Management and IT investments toward Organization Performance (Case study : BPR Mustika Utama Kolaka Southeast Sulawesi) ]]>
<![CDATA[Ningsi, Nurfitria]]>;
<![CDATA[Pribadi Subriadi, Apol]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 2 (2017): The 2nd Internasional Seminar on Science and Technology (ISST) 2016 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2017i2.2332
<![CDATA[This research intended to give an overview on the micro banking to develop the concrete steps of IT infrastructure to facing the globalization of business. Previous studies showed that the differences in the perception of negative effect on long-term performance of the organization in this case the productivity paradox. Mapping IT Investment Portfolio as an approach to user orientation be appropriate alternative to achieving objective business success by offering a wide range of potential applications with objective of user needs. This study finding there are 15 potential applications that can be developed by Micro banking for 5 years later with specific application indeed to reflecting all levels of management needs.]]>
<![CDATA[Design of Model Predictive Torque Control (MPTC) for Speed Control 3 Phase Induction Motor with Robust Stator Flux Observer ]]>
<![CDATA[Mudia, Halim]]>;
<![CDATA[Rameli, Mochammad]]>;
<![CDATA[Efendi, Rusdhianto]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2015i1.1148
<![CDATA[The induction motor is a desirable alternative to the direct current motor in many applications because it is rugged, reliable and economical. However, control of the induction motor is more complex than the direct current motor, this is caused by the complexity of the dynamics of the induction motor, so the algorithm of induction motor is more complex. Based on these problem, author conducted a study on the induction motor using Model Predictive Torque Control (MPTC) with robust stator flux observer, in which robust stator flux observer is designed to overcome the shortcomings in the Direct Torque Control (DTC) conventional which can cause high fluctuation in flux ripple and torque ripple when reach steady state condition. So from the purpose of the proposed method, the results of the designed system can adjust the rotating speed of the induction motor in accordance references given at 120 rad/s with a settling time is 0.753 seconds, and also can minimize fluctuations in flux ripple and torque.]]>
<![CDATA[The creative hawker center for small - family - business in traditional food of Surabaya ]]>
<![CDATA[Tanuwidjaja, Gunawan]]>;
<![CDATA[Daniel, Daniel]]>;
<![CDATA[Tedjo, Ishak]]>;
<![CDATA[Karina Brahmana, Ritzky]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 3 (2017): 8th International Conference on Architecture Research and Design 2016 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2017i3.2458
<![CDATA[The Traditional Food Seller were mostly managed by the family, so they could be categorized as Family Businesses (FB). Furthermore, The FB in traditional food needed integrated business development strategy (related to marketing, business information system as well as architectural design). It was found during the research supported by UBCHEA in Surabaya. One of the strategies needed was to create the legal family food hawker center place quality. The strategy was in line with the Surabaya Municipality Government, The Cooperative and SME’s Business (Dinas Koperasi dan UMKM). A mini hawker center (consisting of 5 hawkers) was proposed in the roadside of the neighborhood collector. Additional to the center, a culinary park was provided onsite for catering the social interactions of Indonesian. The center was designed with creativity, but with low-cost local material such as brick, wood and bamboo. The design was also equipped with clean water, sanitations as well as food storages. All these would create positive branding and ensure sustainability of the hawker center.]]>
<![CDATA[PVDF/PEG/TiO2 Hollow Fiber Membrane for Lead(II) Removal ]]>
<![CDATA[Putri, Shabrina Adani]]>;
<![CDATA[Humairo, Fithri Yatul]]>;
<![CDATA[Widiastuti, Nurul]]>;
<![CDATA[Ong, Chi Siang]]>;
<![CDATA[Jaafar, Juhana]]>;
<![CDATA[Ismail, Ahmad Fauzi]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2015i1.1038
<![CDATA[Polyvinylidenefluoride-Polyethyleneglycol Titanium dioxide (PVDF/PEG/TiO2) mixed- matrix hollow fiber membranes were prepared via phase inversion induced by dry-jet spinning method. The composition of the dope solution were PVDF 18 gram, PEG 2 gram, N,N-dimethylacetamide (DMAc) 80 mL and TiO2 varied from 0 to 4 gram. The PVDF/PEG/TiO2 mixed-matrix hollow fiber membranes were characterised using XRD, SEM-EDX and TGA. Results indicate that TiO2 addition affects the performance of membrane such as hydrofilicity, pure water flux, porosity and antifouling properties. 2 gram TiO2 addition was found to be the optimum amount based on the results of hydrofilicity, pure water flux, porosity and antifouling properties. Furthermore, PVDF/PEG/TiO2 membranes with xx g TiO2 were used to study the adsorption of Pb(II) on the membrane at various concentration from 20-100 ppm. Results show that the membrane demonstrates good performance with best capacity adsorption of 1.512 mg/cm2 at Pb(II) concentration of 100 mg/L.]]>
<![CDATA[Groundwater Analysis Using Vertical Electrical Sounding and Water Quality Tester in Sukolilo Area, Surabaya, East Java: Significant Information for Groundwater Resources ]]>
<![CDATA[Bahri, Fuad Aulia]]>;
<![CDATA[Rismayanti, Hasibatul Farida]]>;
<![CDATA[Warnana, Dwa Desa]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 2 (2017): The 2nd Internasional Seminar on Science and Technology (ISST) 2016 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2017i2.2283
<![CDATA[This research purpose to find out groundwater quality and environmental pollution that has occurred in aquifer of Sukolilo, Surabaya, East Java. Vertical Electrical Sounding is a geoelectric method to measure the resistivity of the rocks. This instruments is used to obtain subsurface information about aquifer depth. Water quality tester is used to know water quality by measuring acidity, conductivity, salinity, Oxidation Reduction Potential, and Total Dissolved Solid parameter. The result shows that aquifer has about 3.17 m thickness and lied at 0.45 to 3.62 m with lithology of alluvium. Lithology changes toward the north shown by different depth of the layers of rock. There has been sea water intrusion in groundwater aquifer at Sukolilo area. It was shown by high salinity and high Total Dissolved Solid parameter of some water samples with the higher values approaching sea. Therefore, it can be concluded that water from the unconfined aquifer in Sukolilo was polluted and not worthy for consumption.]]>
<![CDATA[Analisa Pengaruh Variasi Komposisi Gas Pelindung Terhadap Hasil Pengelasan Gmaw-Short Circuit dengan Penggunaan Mesin Khusus Regulated Metal Deposition (RMD) ]]>
<![CDATA[Hilmy, Zakwan]]>;
<![CDATA[Syahroni, Nur]]>;
<![CDATA[Hadiwidodo, Yoyok S.]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 2 (2018): The 2nd Conference on Innovation and Industrial Applications (CINIA 2016) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2018i1.3385
<![CDATA[Salah satu faktor yang menentukan hasil pengelasan adalah gas pelindung (Shielding Gas). Jenis dan komposisi gas pellindung pada pengelasan memberikan hasil yang berbeda antara satu dengan lainnya. Moda transfer GMAW- short circuit sering tidak dilakukan karena memiliki tingkat kesukaran yang tinggi. Oleh sebab itu perusahaan listrik Miller membuat terobosan dengan menciptakan RMD (Regulated Metal Deposition). Oleh karena itu diadakan penelitian yang bertujuan mengetahui bagaimana pengaruh variasi gas pelindung elektroda yang digunakan pada proses pengelasan GMAW dengan menggunakan mesin RMD (Regulated Metal Deposition) dengan transfer moda secara short circuit terhadap hasil pengelasan pipa baja ASTM A106 dengan komposisi Ar+CO2 (90%+10%, 80%+20%, 75%+15%, 0%+100%) pada posisi Flat, horizontal, vertical, dan overhead di bagian root. Analisa terhadap hasil pengelasan menunjukan bahwa kriteria yang diamati seperti hardness, level spatter, tebal weld metal, serta bentuk dan konsistensi hasil pengelasan (weld bead) mengalami perubahan terhadap penambahan komposisi gas CO2. 100% gas CO2 menghasilkan nilai kekerasan terendah yaitu 186.46 HV dan level spatter tertinggi yaitu 12.27%. Bentuk weld bead yang tidak konsisten dihasilkan seiring bertambahnya gas CO2, hal ini karena busur las yang dihasilkan menjadi tidak stabil sehingga menyulitkan welder.]]>
<![CDATA[Degradation and Aggradation Parabolic Model of Dengkeng Riverbed ]]>
<![CDATA[Fauziyah, Syifa]]>;
<![CDATA[Ihsan, Cahyono]]>;
<![CDATA[Sobriyah, Sobriyah]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2017i6.3238
<![CDATA[The stability of riverbed became an important part in the river. Basically, the stability would be maintained if the grains of sediment was not moving (transported). Riverbeds that were disrupted because of carried details (degradation) or stacked granules (aggradation) in certain parts of the river caused the structure to be damaged. Degradation and aggradation along the river road at a certain time would be figured out in this study, so that it could assist in making treatment recommendations layer riverbed. The case study was conducted on Dengkeng River along the 8 km segment Karangjoho-Jetis which was a fixed flow (quasi-steady) sub critical Froude number <0.6. Bottom sediment sample material with a grain diameter variation D35, D50, D65, and d90 in grain size analysis was used for the calculation. The process of degradation and aggradation riverbed sediment discharge was known by calculation using the method of Meyer-Petter & Muller. Parabolic model analysis with the help of MS Excel was used to calculate the degradation and aggradation happened. At the time of running, graph illustrating the comparison between degradation and aggrades with a segment length of the river at a certain time was seen. The graph showed the longer segment of the river, degradation and aggradation would less.]]>
<![CDATA[Energy Efficiency Analysis of Trawlers (Case Study: Indonesian’s Trawler) ]]>
<![CDATA[Dasira, Alyuan]]>;
<![CDATA[Laurens, Jean Marc]]>
<![CDATA[ IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2014i1.202
<![CDATA[Nowadays, the energy efficiency is of most importance in all economical activities. For the fishing industry, it is particularly critical. Energy efficiency in the fishing sector can be expressed in term of the ratio of fishing capture over operational cost. The fuel cost in ship operation became a dominant factor of the total operational cost. Moreover, fuel cost is high and continues to increase. One way to achieve better energy efficiency is to use a high efficiency ship propeller in order to diminish fuel consumption.  Trawlers have two main operational conditions; they are the voyage condition and the trawling condition. The voyage condition is when the trawler travels to port and to the fishing grounds. The trawling condition is when the trawler pulls the trawl to catch fish. Most of trawler problem is in trawling operation with trawls, the ship resistance increased tremendously and then the propeller must work harder to ensure the ship can advance against the trawling resistance at low speed, 3, 5 Knots. This condition corresponds to a heavy load condition. In this condition, the propeller efficiency is low. Duct propeller is one of the configurations that increase the propeller efficiency in heavy loaded condition. The other strategy is to increase the energy efficiency is to optimize ship speed in voyage condition.  In this research, the numerical simulations performed for the propeller-duct interactions were made possible thank to an iterative procedure where the flow around each of the several components are modeled with a potential flow theory. Boundary element Method (BEM) or panel method is used to solve the potential flow model. The models and methods are described in the document as well as the iterative procedure that has been developed within the framework of this project. We have investigated energy efficiency with fuel consumption approach. Propeller with and without duct in same size (B3-65 and Kaplan 65 in Duct 19A) are analyzed and optimized ship speed 9 Knots to 7 Knots. It shows that 13.7 % of the fuel consumption was saved with a duct propeller in trawling condition and 35% of the fuel consumption was saved with an optimized ship speed in voyage condition.]]>
<![CDATA[Survey on household energy consumption of public apartments in Bandung City, Indonesia ]]>
<![CDATA[Usep Surahman]]>;
<![CDATA[Johar Maknun]]>;
<![CDATA[Erna Krisnanto]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 3 (2017): 8th International Conference on Architecture Research and Design 2016 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2017i3.2449
<![CDATA[Indonesia has been experiencing population and high economic growth in line with rapid urbanization. As a consequence, the needs for living areas increased faster and enormous number of residential buildings, especially apartments, have been developed in major cities, such as Bandung, resulting in further growth of energy consumption.Thus, it is necessary to develop energy-saving sustainable apartments in Indonesia in order to cope with escalating energy issues. This paper reveals the detailed profiles of household energy consumption of apartments in Bandung City, Indonesia. A survey within the city was conducted (n=100) in 2016 to obtain household energy consumption data of public apartments. The detailed information about household appliances and domestic energy consumption profile among households were investigated through the face-to-face interviews and the measurement of appliances’ capacities by using the watt checker. The annual average energy consumption including electricity and gas was calculated. The results show that the annual average operational energy for public apartments are 9.8 GJ/year. The annual average energy for cooking accounts for the largest percentage (48%) of operational energy followed by refrigerator (27%), lighting (10%), entertainment (9%), cooling (3%), etc. The profiles of CO2 emissions are similar with those of energy and the potential energy-saving strategies for apartments in Indonesia were proposed.]]>
<![CDATA[Numerical Study Effect of Secondary Air Mass Flow to Characteristics of Circulating Fluidized Bed Boiler ]]>
<![CDATA[Ahmad Tarmizi]]>;
<![CDATA[Giri Nugroho]]>;
<![CDATA[Achmad Syaifudi]]>;
<![CDATA[Bambang Sudarmanta]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 1 (2018): 3rd International Seminar on Science and Technology (ISST) 2017 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2018i1.3525
<![CDATA[In this paper, computational study of Circulating Fluidized Bed (CFB) combustion is analyzed. The results are concern about volume fraction and velocity distribution along the boiler. Simulation result were present in velocity, volume fraction, and pressure profile in boiler. All discussed result are applicable to all type of fluidized bed boiler.This paper will concern about how fluidization and combustion occur in boiler. Simulation present in unsteady state, multiphase direction, k-ε standard turbulence model, species transport combustion model and DPM. In this simulation, fuel, air, and other input materials are defined by actual data from power plant operation. As a result of analysis, the variation of secondary air does affect the characteristics of fluidization and combustion in CFB system. The superficial velocity is found around 4.1 m/s. The pressure generated is about 6642.3 Pa in the windbox area, and in the middle furnace area about -868.6 Pa]]>
