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IPTEK Journal of Proceedings Series
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
 86   87   88   89   90 
Highest and Best Use for Mall’s Motorcycle Parking Area Surabaya Rafael Dani Kusuma; Christiono Utomo
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11135

Abstract

Property growth for residence, office building, and other uses is increasingly higher. This results in the development plan for a land that can change along with changes in its surroundings. Therefore, an analysis is needed to determine the utilization of land so that it can produce alternative properties with the highest income and land value. This research uses the Highest and Best Use (HBU) method to analyze Tunjungan Plaza parking area to the best and highest use of a land which was originally a parking lot. This research begins with an analysis of land development trends around the location and the respondent/stakeholders analysis through questionnaire and interview techniques to formulate which type of property and development that will be analyzed by the Highest and Best Use method. From the results from the identification of alternative land uses, five alternative developments using the mixed-use building consisting of apartment-hotel and office-apartment systems were obtained. From the results of the analysis conducted, the highest value of land productivity was obtained by developing land with mixeduse building system which consists apartment (50%) - hotels (50%) that gives enhancement the land value of Rp. 463.051.849, - / m2 or an increase of 1.267,25 % from before development was conducted.
Isolation and antidiabetic Activity of Prenylated Xanthones from Pericarp of Mangosteen (Garacinia Mangostana Linn.) Karneg, Syahdam; Fadlan, Arif; Ersam, Taslim
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020) - IN-PRESS
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.8940

Abstract

The material used in this research was dry powder of pericarp mangosteen (Garcinia mangostana Linn.). which is a family plant of Clusiaceae. This taxa is known as the main source of prenylated xanthones derived from phenolic compounds. The compounds separation process was carried out by maceration method, 8 kg of sample macerated using n-hexane solvent, 90 g of n-hexane extract were produced. The n-hexane extract was fractionated by vacuum liquid chromatography (VLC) using silica gel, eluted by increasing the polarity of the solvent, which is a mixture of n-hexane solvent: dichloromethane (10%, 20%, 30% and 50%), resulting in three combined fractions, namely the first fraction 13,92 g, the second fraction 18,27 g, and the third fraction 23,24 g. The refraction process was then carried out in the third fraction, producing two yellow crystals with melting points respectively, 155-156 °C and 172-173 °C. The structural elucidation method was carried out using UV-Vis, IR, HR-ESI-MS, and NMR spectroscopy techniques. Based on the analysis of spectrum data from two known compounds, 8-deoxygartanin (1) and β-mangostin (2) antidiabetic bioactivity test was carried out by the method of inhibiting the enzyme α-glucosidase in vitro. The test results obtained by compound (1) with an IC50 value of 38,5 μM and compound (2) with an IC50 value of 157,9 μM indicate that the two compounds are included in the inactive category. This is indicated by the IC50 value which is much higher when compared to the acarbose as a positive control with an IC50 value of 4.5 μM.
Optimization Telecommunications Infrastructure Projects for University Area Supriyanto, Supriyanto; Ahyudanari, Ervina; Samopa, Febriliyan
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11215

Abstract

In 2018-2019, utilization of data-based telecommunication was increased 82%. Signal measurement in Universitas Airlangga Surabaya is still low coverage because the distance between telecommunication towers and buildings. Surabaya City Government regulates the control of telecommunication towers including tower height, land, aesthetic, and tower sharing. One approach to solve this problem involves the use of concept Outdoor Distributed Antenna System (ODAS) or known as Base Transceiver Station Hotel (BTSH) which is support Microcell Pole (MCP), fiber-optic cable transmission, with configuration A Multiple-Carrier Multiple-Technology (MCMT). The tower provider company needs Optimal Hotel BTS design with measurement methods like Signal Strength, Signal Quality, and Point of Interest (POI). Planning a project schedule and project cost is using Critical Path Method (CPM) and Analytical Hierarchy Process (AHP) for further consideration regarding some criteria like revenue, cost, and technical. This analysis found that the most optimal calculation based on criteria weight is alternative project-1, by build a BTS Hotel in campus C, an 8 MCP tower, MCP fiber-optic cable with length ± 2418 m, and connecting campus A, B, C with length ± 8818 m, then project duration in 137 days with cost estimation IDR 7.8 billion.
The Effect of Financial Incentives, Organizational Commitment, and Job Satisfaction on Employee Performance Rahmadi, Doddy Firman; Partiwi, Sri Gunani
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11195

Abstract

Organization or business performance always have close relation with its own member or employee performance and productivity. Most of them only focus on raising the wealthy of its member by giving financial incentives hoping it will reflect with significant improvement of member performance. But in some case giving the incentives not always bring significant increase to member productivity. This study was made with the aim to determine the effect of financial incentives, organizational commitment, and job satisfaction on employee performance. This study uses quantitative study. Data collection procedures used in this study are structured data collection. The population used is 10 persons of installation and maintenance employees of PT. KONE Indo Elevator throughout Indonesia that has implement some financial incentive to boots up their employee performance. The result of the study was financial incentives and job satisfaction have positif and significant effect to employee performance while organizational commitment not having signifficant effect to employee performance.
Analysis of Root Causes of Fire in Coal Fired Power Plant Using FMEA Study Case Method at PT. PJB UBJOM PACITAN Muchamad Jati Nugroho; M. Isa Irawan
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11079

Abstract

Fire is one of the highest risks in using coal as fuel for electricity generation. Coal fires often occur in the area of coal handling facilities and are caused by damage to equipment, accumulation of coal dust that has not been cleaned and burning coal itself. This study aims to find out how the application of the FMEA method for the analysis of the root causes of fires in the Coal Power Plant with a case study of the Pacitan steam power plant uses a quantitative approach to find the root cause for prevention by respondents from PT. PJB UBJOM PACITAN at manager and supervisor level. In applying FMEA, the severity, events, and detection is needed to produce risk level figures which will be used as a step in determining the priorities of the company's mitigation management. Based on this study, 15 types of equipment failures were found in the operational coal handling facility at PT PJB UBJOM PACITAN. By using the FMEA method, 6 types of critical failures can be found that require more attention, namely dust on coal which has the potential to cause self-ignition, self-ignition of coal in the area, hot surface, self- combustion in coal yards and perforated crushing bodies.
Hybrid Double Seasonal ARIMA and Support Vector Regression in Short-Term Electricity Load Forecasting Kinanti Hanugera Gusti; Irhamah Irhamah; Heri Kuswanto
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.11117

Abstract

Forecasting is the main purpose of time series modelling. In short-term forecast, data can be predicted for a half hour-ahead. A half hour-ahead prediction faced with overlapping data series patterns risk. On the other hand, time series model can be analyzed with a linier or nonlinier approach. In this paper, we proposed the combination (hybrid) liner and nonlinier model for modelling the short-term electricity load in East Java. A half-hour electricity load forecasting is needed for real time controlling and short-term maintenance schedulling. However, the main problem of modelling time series data is determining linier or nonlinier time patterns. In short-term electricity load forecast, it depend on the moment of time (i.e weekdays, weekend, public holidays, joint holidays or religious holiday, etc) and the electricity load classification. In this analysis, we developed the Double Seasonal ARIMA (DSARIMA), Support Vector Regression (SVR), and hybrid DSARIMA-SVR. The DSARIMA model belong to linier model based on a well-known Box-Jenkins methodology. The SVR model belong to nonlinier model and the hybrid model is a mixing of linier and nonlinier models. The models are evaluated using Root Mean Square Error (RMSE) and Symmetric Mean Absolute Percentage Error (MAPE). The result shows that the accuracy of hybrid DSARIMA-SVR models are superior to the other individual models.
System Dynamics Model of Transit Oriented Development Implementation to Reduce Carbon Emission from Urban Transportation Raulia Riski; Erma Suryani; Ulfa Emi Rahmawati; Gustin Ayu Cahyandini
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.11140

Abstract

The biggest carbon emissions in urban areas are generated from the transportation system, including in Surabaya City where the transportation sector contributes 5.48 million tons of carbon emissions per year, or about 96% of the total air emissions there. With the cities rapid development, urban transportation systems need to be managed appropriately to avoid environment damage. The most effective way to reduce carbon emissions from the transportation system is by reducing the number of private vehicles uses. TOD is one of the solutions that can be applied, which is through the integration of mixed land development and the construction of transit mode transportation systems. TOD allows people to carry out various daily activities with close transportation distances, either using transit modes, walking, or cycling. This study aims to show the benefits of applying TOD in reducing carbon emissions from the transportation sector in Surabaya using a system dynamics model. The model produced can be used as a reference or consideration for the government and other related parties in developing strategies and policies related to the implementation of TOD. Future studies can analyze several TOD scenarios that can be carried out to reduce carbon emissions from the transportation sector in Surabaya.
Livable Rental Houses for Factory Workers in Industrial Area Rahardiyan Ari Wicahyo; Dewi Septanti; Rika Kisnarini
IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i6.9182

Abstract

Rental houses as a place to live is a major needs for factory workers. Liveable rental houses can improve the quality of workers life’s in the future, because they have the opportunity to get a livable house in their lives. Therefore, rental houses in industrial areas provided by the private sector for workers should meet livable houses standards. This study was made to determine the feasibility of habitation and evaluate rental housing for workers provided by the private sector, and then formulate the concept of rental houses according to standards or policies for livable houses, the theory of livable houses and the results of research evaluations of rental houses for factory workers in industrial areas. The methods in this research used positivism with primary and secondary data collection techniques through direct observation at the study location, questionnaires for factory workers as tenants, and interviews. who participated in this study were 123 respondents from a total population of 400 units. The concept of decent housing for workers in industrial areas is obtained from the evaluation results of the standard of livable houses, literature studies, and the results of a SWOT analysis. The results of this study, is about the concept of a livable rental houses for workers in an industrial area, including the area of the room in accordance with the provisions of a bunk bed that can occupy four people so that the rental costs can be share by four people, setting the ventilation system with cross ventilation on two sides of the wall for the occurrence of cross ventilation with a ceiling height of 3 meters, the provision of adequate windows for natural lighting during the daytime so as to save electricity consumption. With a air system and good natural lighting will give positive results for the rental house because the house will be far more livable and healthier to live in. This research is expected to be a reference for rental housing owners and the government to make the concept of livable rental housing for workers in industrial areas.
Social Resilience Assessment in Reducing Potential Risk of Earthquake in Surabaya Myrna Augusta Aditya Dewi; Mohammad Arif Rohman; Eko Budi Santoso
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11220

Abstract

Surabaya has a potential risk of earthquakes, refer to the 2017 Indonesian Earthquake Source and Hazard Map issued by the National Center for Earthquake Studies (Pusat Gempa Nasional-PUSGEN). Surabaya city readiness in responding this issue is indicated by the community resilience. Therefore, it is important to assess the social resilience to find out the current capacity of communities in responding to earthquake risk. The research targeted the area around the Surabaya Fault with potentially high seismic hazard, consisting of 8 districts and 23 sub- districts. 22 variables were obtained by doing a literature review and expert judgment, that are 11 variables for social vulnerability and 11 variables for preparedness. We collect the data by distributing questionnaires to 116 respondents, the head of neighbourhood units, selected by simple random sampling. We analyze the data using Confirmatory Factor Analysis (CFA), descriptive statistics and Geographic Information Systems (GIS)-based mapping. Based on CFA, there are 7 valid variables of social vulnerability and 10 variables of preparedness for index assessment. The social vulnerability assessment has an index value of 2.27, while preparedness has an index value of 1.99. The index value shows that both of these indicators are in the low-to-medium category. Then, the social resilience index is assessed as the ratio of preparedness and social vulnerability index. By comparing these two indicators, Surabaya has an index value of 0.88 for social resilience or categorized as less resilient in responding to the earthquake risk.
The Distribution of Damage to District Roads in Karang Penag Sub-District in Sampang District Uses Pavement Condition Index (PCI) and Spatial Poisson Point Process (SPPP) Sulhan Sulhan; Nur Iriawan; Ervina Ahyudanari
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11193

Abstract

Karang Penang sub-district is a new sub-district after the division of territory in the Sampang Regency. This sub-district consists of seven villages. Sampang Regency is an area that is categorized as underdeveloped regions in East Java Province. This is indicated by the economic conditions and the low quality of human resources, and inadequate infrastructure. The last indication needs to be carried out regularly to ensure its continued functioning in supporting economic movements in this area. Delay in the identification of damage that often occurs in this area has caused delays in the maintenance of the facility. To overcome the delay in preparing the repair schedule, it is necessary to make a faster and more accurate assessment of road conditions. This study aims to assess the condition of the road pavement by combining the two approaches, namely the Pavement Condition Index (PCI) method and the Spatial Poisson Point Process (SPPP). The results of the modeling are expected to be able to identify the distribution pattern of the locations of damage points of the highway, to identify what parameters have a significant role in the distribution of the points of damage to the highway, and to be able to identify the level or condition of district highway conditions in Karang Penang District. The results of this study are able to provide predictions of the pattern of road damage conditions with varying intensity and influential factors between highway locations. These results, in turn, can provide information on the pattern of corrective actions that are more appropriate according to the damage criteria at these locations.

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