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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
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The Potentials and Tourism Aspect of Gianyar Botanical Garden Based on Tri Hita Karana Ni Komang Indra Mahayani; Bambang Soemardiono; Vincentius Totok Noerwasito
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.y2020i6.8906

Abstract

Tourism plays an important role in the development of a city. Gianyar Botanical Garden (KRG) is nature tourism that explores natural and cultural potential. The existing culture serves as a philosophy of life, values, and activities. Culture and architecture will produce traditional architecture. The problem that occurs in the botanical garden is the decrease in identity and visualization as tourism. This phenomenon causes the region does not have its characteristics. The Gianyar Botanical Garden (KRG) is a sector that needs to be redeveloped with the local culture. A relevant culture to redevelop the tourism sector using the Tri Hita Karana concept. Related to the culture, it aims to find out the potentials and aspects which have Tri Hita Karana cultural values consisting of Parhyangan, Pawongan, and Palemahan. This study used a naturalistic paradigm research method with a qualitative approach by collecting information through observations, interviews, and documentation. This study supported by walk-through analysis of patterns and activities. The result showed the natural potential and local culture influenced the development of tourism. Bali as a tourist destination must pay attention to Tri Hita Karana aspects as the basis in preserving, protecting, and exploring. The redevelopment of the Gianyar Botanical Garden (KRG) with cultural uniqueness so that tourism becomes harmonious about God, human beings, and the environment that can last for a long period.
Analysis of Factors Causing The Delay of the Storage Tank Project Using Fault Tree Analysis Abdurrohman, Abdurrohman
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.y2020i6.11160

Abstract

The Storage Tank Project is a national vital object that supports the operational reliability program of the Fuel Oil distribution. But there was a delay in the implementation of work by 31.35%. This research purpose to identify the factors and indicators that cause delays in the storage tank construction project. This research method uses Fault Tree Analysis. Factors and indicators are FTA Event inputs which are then illustrated by FTA diagrams. FTA using Boolean algebra formulation results in a probability value for each Event.Objek research is in the construction Storage tanks in Surabaya. Work items in the research are Foundation work with a weight of 26.50% and Construction Work with a weight of 36.94%. From the results of this research there are two indicators with the largest probability value. First, the Soil Data Report is not suitable for foundation work with a value of 0.968 in the owner's area. Therefore, the owner must be more careful in making design documents, especially on foundation work. Second, the lack of manpower with a probability value of 0.912 in construction work in the Contractor's area. in this case the contractor must ensure that the manpower has the required qualifications. Especially in Welder certification.
Determination of Optimum Point of Composition of Fuel Calories in Producing electrical Energy in Coal Fired Power Plant Jonathan Dian; Wahyu Wibowo
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.y2020i3.10904

Abstract

Coal-fired power plant (CFPP) is a type of power plant that is widely used for 35,000 MW electricity projects in Indonesia. CFPP must adjust to its operating strategies with the availability of abundant low-rank coal, and it will affect CFPP performance. This study aims to determine the optimum heating value of fuels, the trend of net plant heat rate (NPHR), the cost of electricity production (component C), and the optimum point of the CFPP operation. The data used is from CFPP operations. First, data is analyzed by descriptive statistics and formed into a regression model. The next step is to estimate the parameters of the population data. The regression model obtained was then carried out the goodness of fit test and residual analysis. Then, the variable’s values are changed to the Z-score and plotted in the regression model. The model interpretation is carried out and conclusions can be obtained to find out the optimum point. The conclusion of this study is the optimum point of generating electricity in CFPP can be achieved by using coal calorific values of 4,450 kCal/kg, NPHR of 2,683.6 kCal/kWh, and COE (component C) of Rp 436.5/kWh when using coal at a price of 732.2/kg and Net Power of 279 MW.
Media Sentiment Analysis of East Java Province: Lexicon-Based vs Machine Learning Rustanto, Ikhwan; Rakhmawati, Nur Aini
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.y2020i6.11094

Abstract

Indonesian Ministry of Communication and Informatics reported internet users in Indonesia reached 150 million with a penetration of 56% in January 2019. This indicates the era of information disclosure; therefore, information on government performance is more easily obtained by all levels of society. Society is becoming more sensitive to government performance, and more feedback is being given to the government. This large amount of feedback has stimulated research on public sentiment analysis. This study compares the public sentiment analysis by two different approaches to the government performance of East Java Province. The study was comparing the lexicon-based method approach and the Support Vector Machine (SVM) from the machine learning approach. This study uses Twitter and Instagram datasets, and also the online news media web that reports on East Java. This study found that by using a combined data source of social media and online media, the lexicon-based approach produced an accuracy value of 57.7%; while the SVM machine learning method approach produces an accuracy of 44.7%.
How Effective is Regional Spatial Detail Plans as Instrument of Flood Management (Case Study:Kedurus Watershed,Surabaya City) Lukman Yusuf; Adjie Pamungkas; Eko Budi Santoso
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.y2020i6.8897

Abstract

Surabaya city has detailed spatial planning documents as instruments for flood reduction. The detailed spatial plan for the area regulates land use plans to prevent uncontrolled land use changes that cause flooding. The research question is "What is the efficiency of the detailed spatial plan as an instrument for flood management in the Kedurus River Basin?". The analysis tool is the spatial modeling of floods based on 2D Flow Area using HEC RAS 5 software. The first step is to build a spatial flood model using the existing condition parameters, the next step is to apply the parameters derived from the detailed spatial plan in the Kedurus River Basin on the models that have been built . The result is that the implementation of detailed regional spatial plans in the Kedurus watershed tends not to reduce the area of flood inundation even on the contrary increases the runoff coefficient. In the spatial model of flooding it is known that the condition of the return period of 20 years also shows an increase in the area of flood inundation to 0.5-1 meters from the existing condition which initially covered an area of 45.92 Ha to 72.38 Ha.
Selecting The Best Supplier in Procurement Section (Goods Spot Purchase) - Departement SCM With Analytical Hierarchy Process (AHP) Method Marline Louister Siregar; Suparno Suparno
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.y2020i6.11151

Abstract

Choosing suppliers is one of the upstream supply chain areas that affect the quality of the products produced by a company. This study aims to develop a framework for selecting the best suppliers/suppliers in the Procurement Section (Goods Spot Purchase), the SCM Department at the company. According to the AHP method, this study will determine the main criteria through interviews, questionnaires, and pair-wise comparison in developing AHP, and determine the sub-criteria based on the main criteria. The result is forming the best supplier selection framework based on the requirements set by the company. Also, the main criteria for selecting the best suppliers are price, quality, delivery. flexibility and response, and Vendor Performance. This study might be beneficial to be implemented in the company, in terms of the best supplier selection in the Non-stock purchase section of the Procurement Section, the SCM Department objectively.
Building Information Modeling (BIM) Technology Acceptance Analysis Using Technology Acceptance Model (TAM) Felix Andrian Prihatono; Tri Joko Wahyu Adi
IPTEK Journal of Proceedings Series No 1 (2020): The 1st International Conference on Business and Engineering Management (IConBEM)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i1.10854

Abstract

The growth of an industry growth couldn’t be separated from technology development. Nowadays, technology development mostly affected by digitalization, which brought us to industry 4.0 era. The same thing also occurs in construction industry, although its development relatively slower than the growth in manufacturing industry. Construction technology, such as Building Information Modeling (BIM), 3D printing, and robotic equipments, has been introduced to construction industry. BIM is defined as digital representation of physical and functional characteristics of a facility, forming a reliable basis for decisions during its life-cycle. However, in the end, technological development in Construction Industry depends on industry players’ readiness to accept and implement the most advance technology. This research’s focus is on BIM technology acceptance among players in Indonesia Construction Industry. The research will be conducted in Indonesia Construction Industry, data will be collected through questionnaires asked to the industry players, such as, consultants, project owners, and contractors who have already use BIM technology for their projects. The analysis will be conducted using Technology Acceptance Model (TAM). TAM is a model which was developed to enhance our understanding about user acceptance of a technology, thus could enable technology designer and implementator to evaluate the system before it being implemented. The research’s result shows that Indonesia Construction Industry is able to accept BIM technology, the conclusion is taken because all the variables used in TAM has higher than 3 on 1 to 5 Likert scale. Path analysis also shows that Attitude Toward Usage variable do not affect Behavioral Intention variable. Direct, Indirect, and Total Effects analysis show that BIM technology acceptance is affected by Perceived of Usefulness. This result could be used as a basis to introduce BIM to new users, that people are more interested in its usefulness rather than ease of use variable.
Risk Evaluation of The Use of The Umbrella Contract for The Construction Project for Medium Voltage Distribution in South Surabaya Region Using The Expected Monetary Value Irawan Dwi Purnomo; I Putu Artama Wiguna
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.y2020i3.11240

Abstract

In the program for accelerating the distribution of electricity to users, also known as the getting electricity program by PT. PLN Persero. Specifically, the distribution of the South Surabaya region has accelerated programs with vendors with a new contract system, namely the umbrella contract system. Where is based on the performance of the umbrella contract system in 2018 it has the potential risks that influence during the implementation process of this umbrella contract takes place. Using the stages of risk identification, risk assessment, and calculating the EMV (expected monetary value) analysis method to analyze each important risk event and its risk response. First, a preliminary survey was conducted to identify the risks that significantly influence the umbrella contract with the respondents who played an important role in the implementation of the umbrella contract. In the assessment of each risk, it is found that the risks that have an important influence during the umbrella contract process take place. Expected monetary value is used to analyze the contingency costs that need to be prepared from each risk variable based on the risk response or risk mitigation carried out during the implementation of the umbrella contract The result obtained in this study there are 4 risks need to be concern during implementation of umbrella agreement cause had great impact for the project cost.
Re-Design Layout and Allocation of Raw Material Warehouses Using Simulation Methods to Minimize the Handling Cost from Port to Warehouses Boy Cahyo Prihanto; I Nyoman Pujawan
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.y2020i3.11081

Abstract

The high cost of raw materials handling from the port to the warehouses at PT. Petrokimia Gresik has encouraged this research to find solutions to reduce costs in raw material unloading activities. The location of factories and raw material warehouses that are separated from each other, the number of warehouses that are not yet connected with conveyor belts as well as the diverse types of raw materials become its own challenges in operating unloading activities to be more efficient. The layout and allocation of raw materials in the existing warehouses creates high cost of raw materials handling because slow moving raw materials are close to the production location, while fast moving raw materials are far from the production location. In addition, the differences in the existing unloading methods also affect the cost of raw materials unloading, the use of vessel cranes and dump trucks will increase costs, otherwise the use of conveyor belts will minimize the cost of raw materials handling. This research is important to find the layout and allocation of raw materials that have the most efficient handling costs. The steps in this study include (1) data collecting and processing; (2) making conceptual and simulation models, (3) verification and validation tests; (4) developing alternative scenarios; (5) running simulations based on alternative scenarios; (6) comparing scenarios using anova test and cost and benefit analysis. The simulation is done using Arena 14.0 software. The simulation results show that the re-design layout and allocation of 5 warehouses in Factory 2A and Factory 2B is the best alternative scenario. This scenario is proven to be able to minimize the cost of raw materials handling with savings of Rp. 10.958.028.455 per year with an ROI of 108% and a Payback Period of 0,48 years.
Synthesis of PVA/SiO2 Nanofibers by Electrospinning Method for Supercapacitor Separators Muhamad Nirwan; Heru Setyawan; Widiyastuti Widiyastuti
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.y2020i6.11119

Abstract

In this research, polyvinyl alcohol (PVA)/silica nanofibers have been synthesized using electrospinning technique. Solutions of sodium silicate (Na2SiO3) in water and PVA flakes were blended and then processed by electrospinning method to obtain PVA/silica nanofibers. The effect of silica concentration on the resulting morphology and diameter of as-spun nanofibers were investigated by using scanning electron microscopy (SEM). The electrolyte uptake and retention of the as-spun nanofibers were measured. The silica concentration has an effect on the resulting nanofibers, where an increase in silica concentration resulted in a decrease on the diameter of the fibers. The manufactured nanofibers have an average diameter of 200-300 nm. The electrolyte uptake and retention values are also affected by the concentration of the silica in the electrospun solution, with the electrolyte uptake and retention values decreasing with the increase in silica concentration. The best values obtained are 151% for electrolyte uptake and 60% for electrolyte retention, which shows potential for PVA/silica nanofibers as an alternative material for supercapacitor separators.

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