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IPTEK Journal of Proceedings Series

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Published by Institut Teknologi Sepuluh Nopember Surabaya

ISSN : 23546026 EISSN : - DOI : -

Core Subject : Science,

Computer Science & IT

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.

Arjuna Subject : -

Articles 1,079 Documents

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Sustainable design of past-rural architecture in the present urban-tropical environment FX Teddy Badai Samodra
IPTEK Journal of Proceedings Series No 3 (2017): 8th International Conference on Architecture Research and Design 2016
Publisher : Institut Teknologi Sepuluh Nopember

With large open space, traditional houses as representative of rural architecture, have been designed in the past in sufficient air flow. However, nowadays, they fight to accommodate unsupportive environment; high density neighborhoods and global warming effect. This research studies adaptation method and concept of sustainable design of the rural architecture in urban environment of tropical climate. Simultaneous direct measurement and occupant interview were conducted on 19 buildings and 71 respondents. Ecotect Analysis and CFD Fluent program were also used to obtain the proposed model. The results highlighted that by active and passive ventilation method, the occupants respond their urban environment. Moreover, the sustainable design can be reached by raising the floor and roof in order to give higher potency of cooler sufficient air movement through openings and shading. Providing solar chimney as vertical ventilation with sufficient ceiling fan works is also proposed.

Best Practice BRT for Increase TransJakarta Modal Share Adhi Muhtadi; Indrasurya B. Mochtar; Hera Widyastuti
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

TransJakarta since 2004 was expected as the backbone of the public transportation in Jakarta as well as TransMilenio in Bogota. However, the role of TransJakarta only approximately 1, 95% of the overall number of trips has reached 19 million/day. The analysis technique on this paper is descriptive analysis. TransJakarta operational perceived is still not effective, so that the necessary efforts to increase modal share sourced from BRT management best practice in other countries. Efforts could be made to increase modal share, among others, the elimination of thousands of parking and replaced by pedestrian friendly also develop a separate bike lane along 303 km in Bogota (Colombia). TransJakarta operational is still considered less in some aspects that are: total of fTransJakarta fleet, total of feeder route, Transjakarta speed and headway still need improved, overtaking lanes are built along the TransJakarta route, Integration with all public transport is absolutely necessary, integration with pedestrians and bicycle users TransJakarta ticket fares should be integrated with feeder and other public transportation such as KRL, city buses and paratransit and using smartcards. In terms of restrictions on the use of private vehicles can be done in the following ways implement a bike-sharing program, implement program of not using motor vehicles during weekdays for 1 day in a week, providing park and ride, implement fuel restriction program for gasoline purchases, implement car sharing program. If the operational performance of TransJakarta has been improved and restrictions on the use of private motor vehicles are implemented, it is expected that the modal split of road users in Jakarta can be expected to rise to be more ideal. In some other parts of the world some experts say ideal conditions of split capital between public transport and private vehicles can reach 65%: 35%. Hopefully the city of Jakarta can achieve this.

Factors That Influence Optimization Open Space Under the Jenggolo Sidoarjo Flyover S H Laksono; V G Paryoko
IPTEK Journal of Proceedings Series No 6 (2018): International Conference on Advanced Engineering and Technology (ICATECH) 2018
Publisher : Institut Teknologi Sepuluh Nopember

Population in Surabaya and Sidoarjo grows rapidly every year. The need for open space is increasing from the needs of residences, shops, hotels, malls, and so on, so that almost every open space in every area is utilized both by legal buildings and illegal buildings or activities. The emergence of illegal activities in areas that are not utilized such as commensurate environmental lines, under flyovers, and around the banks of rivers, can cause the growth and structuring of the city to be hampered. The location of this research paper is under the Jenggolo Sidoarjo flyover, and it is known that there is an irregularity in the arrangement of both street vendors, open spaces, parks and there is still plenty of free space on the site. So as to support the government's efforts in correct and optimal spatial planning and cities. The paper that will be discussed is how to know the potential and ways to develop existing potentials into a public space that is sensitive to public and surrounding environment. So that the public space created is expected to be able to support the arrangement of space and the city of Sidoarjo in particular.

Increasing Community Participation in Sustainable Urban Housing Renewal Implementation (Case Study: Sombo Walk-Up Flat) Dian Purnamasari; I Ketut Aria Pria Utama; I Ketut Suastika
IPTEK Journal of Proceedings Series No 1 (2018): 3rd International Seminar on Science and Technology (ISST) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Urban housing renewal is one of the ways to solve housing problems such as environmental, social and economic degradation in the community. But housing problems is still found on post-renewal in social, economic, cultural and environmental aspects. This is probably happened because the local community is not holistically involved in the implementation of the development. This research uses qualitative method with purposive sampling technique. Data collection techniques through interviews to the original residents of Sombo walk-up flats, stakeholder and managers of Sombo walk-up flats and also conducted by field observations. Then, the analysis is using data triangulation. The results of this study indicate that community participation is still not done holistically in which the community is less empowered after urban housing renewal is done. Therefore local communities should be empowered to realize sustainable urban housing renewal

Organic Geochemistry Studies Aliphatic Fraction Bontang Coal, East Kalimantan Titik Andriani; R. Y. Perry Burhan
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

The free radical scavenging activity of Mangiferaindica L. Leaves had been performed. The methanol extract showed the highest 2,2’-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) free radical scavenging activity among other extracts. Bioassay guided fractionation was performed and yielded three isolated compounds. Their structures were identified as mangiferin (1), friedelin (2) and lupeol (3). Mangiferin exhibited free radical scavenging activity, with an IC50 value of 12.12 µg/mL in vitro.

Arrange The Factors to Improve Employees Performance in PT. XYZ by Using Fuzzy Logic Approach Berlian Fatikh Mubaarok; Bambang Syairudin
IPTEK Journal of Proceedings Series No 1 (2019): 4th International Seminar on Science and Technology 2018 (ISST 2018)
Publisher : Institut Teknologi Sepuluh Nopember

The success of a company is often seen in the company's human resources. Increased employee performance is very important for human resource management in companies that assist individual development, improve organizational performance, improve employee productivity and for the achievement of long-term objectives of the company. This research proposes is going to suggest the factors to improve the employee's motivation and performance. The pattern of these factors can be used as one of supports to improve the employee's performance in PT.XYZ. PT.XYZ hasn’t “tools” yet to find and improve the employees performance. This study uses data from questionnaires with Likert scale and calculated by using relative importance index (RII) to determine the importance of fuzzy factor and logic to see the influence and prediction value of employee performance improvement level. The final result and this research get result of the possibility of employee performance improvement equal to 46,6% Factor to pay attention on employee performance is teamwork, this factor get very high valuation from employees

Determining fair value and maximum price in corporate acquisition (case study: Palm Oil Industry) Gunarta, I K; Alexander, G.
IPTEK Journal of Proceedings Series No 3 (2018): International Conference on Industrial and System Engineering (IConISE) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Acquisition is an act of taking over, in which negotiation may occur. Acquirer values target to determine the purchase price, based on existing condition of the target. This paper values the target with income approach on perspective of the acquirer. The approach applies financial model, estimating future income and cost of the target unto defined period. Net Present Value in free cash flow through the end of projected year is reflected as target value. On the other hand, maximum price acts as regards of the acquirer to point out the highest amount it could afford, yet still attaining positive return from the acquisition. This valuation is conducted in palm oil industry. Thus, the income and cost estimated are in regards to income and cost from oil palm plantation and palm oil mill. Value of the target is Rp. 249,518,452,138.67. Â The maximum purchase price applies similar cash flow to valuation, in addition to the expected purchase price in outflow component. Internal Rate of Return generated from this cash flow, in which is slightly above the required return, has the price as the maximum purchase price. It is accounted at Rp. 220,726,834,579.33.

Prediction of Ceramic’s Mechanical Properties Based on Sintering Temperature using Neural Network Zulkifli Zulkifli; Detak Yan Pratama; Dyah Sawitri; Purwadi Agus Darwito
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Ceramics is one of material which apply in many area. Thus, study of its properties is very important to fulfilled the properties requirement. The mechanical properties of ceramic such as flexural strength and hardness mainly depend on the sintering temperature and additive material. The experiments must be done to determine the best mechanical properties based on proportional sintering temperature and additive materials. Simulation for predicting mechanical properties of ceramics had been developed by using Artificial Neural Network. According to neural network simulation, the graphic of simulation result had same pattern to experimental data as the target. For predicting hardness, the Normalized Root Mean Square Error of network is 0 at training and 0.077 at validation part. This value is in line to its Coefficient Correlation which have value closed to 1. Meanwhile, the network can be used to predict flexural strength of ceramics excellently.

Composition of Ions and Trace Metals in Rainwater in Bandung City, Indonesia Hasan, Nia Yuniarti; Driejana, Driejana; Sulaeman, Aminudin
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

The basin shape of Bandung limits dispersion and transport of air pollutants. This topographical characteristic causes air pollutants to be trapped and accumulated within the basin, where urban areasÂ were located. In the issue of of sustainable city, rainwater could be potential sources ofÂ fresh water. However, air pollution in urban area might alter the natural rainwater composition. Characterization of rainwater was Â conducted by collecting rainwater bulk samples at 4 (four) sites located in a transect from high elevation to the lowest at the base of the Bandung basin. Identification of trace metals, cations and anions were performed in rainwater collected in Bandung City during rainy seasons in February to March 2016. Acidity (pH), conductivity, anions and cations (SO42-, NO3-, Cl-, Ca2+, Mg2+, Na+, K+ and NH4+) and trace metals of Ag, Al, As, Ba, Cd, Co, Cr, Cu, Fe, Ni, Pb, Sb, Se, Sn, Sr and Zn were analysed. During the sampling period,Â the rainfall rate ranged between 19.02 mm/week to 130.48 mm/week. The results show that rainwater pH were 4.10 â€“ 5.95. The dominant chemical composition of rainwater were sulfat (37% â€“ 39%) and ammonium (17% - 26%), followed by nitrate. The trace metals analyses indicated that lead (Pb) had the highest concentration (mean = 76.68 Âµg/L). The concentration of the trace metals decreased in order of Pb, Fe, Zn, Al, Se, Cu, As, Ba, Co, Sr, Ni, Cd, Cr, Sn and Sb. Lead is a toxic compound, resulting from human activities, such as fossil fuel burning, mining and manufacturing. The initial analysis of rainwater composition including heavy metals suggested that rainwater contain various and potential harmful substances, including heavy metals. These findings are particularly importantÂ and should be taken into consideration in the context ofÂ rainwater as a water sources in urban area, e,g. rainwater harvesting for the domestic purposes and urban farming.

Conference Schedule ISST 2015
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Conference Schedule

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