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.
Articles
1,079 Documents
<![CDATA[Implementation of Risk Management for Coal Switching in Coal Fired Steam Power Plant ]]>
<![CDATA[Fikri, Luthfi Yulian]]>;
<![CDATA[Suparno, Suparno]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.12962/j23546026.y2020i3.11194
<![CDATA[Steam Power Plant is the backbone of electricity sector in Indonesia. Steam Power Plants supply 27.5 GW to the grid, in which 90% of them is coal fired. Today, several Coal Fired Steam Power Plants face a supply problem; consequently, they must procure lower quality of coal. One of them is XYZ Coal Fired Steam Power Plant. Even if there are four candidates of provider to supply coal for a minimum 10 years, it is necessary to make assessment about the effects of coal switching on equipment. The risk assessment focuses on effects of each coal sample on equipment in plant site, especially the equipment closely related to firing process, i.e., boiler, electrostatic precipitator (ESP), and Seawater Flue Gas Desulfurization (SWFGD). Risk Breakdown Structure (RBS) is employed to map problem and problem root in equipment. Risk analysis and evaluation use House of Risk (HOR), meanwhile Net Present Value (NPV) is used to evaluate financial traits. HOR analysis shows one environmental factor, i.e., emission, becomes the highest risk as each coal has high ash content; hence it is necessary to improve emission control. Three of four candidates show high NPV values suitable for the company to maximize profitability.]]>
<![CDATA[Perception of Visual Impairment Towards the Aesthetic of Architectural Elements ]]>
<![CDATA[Sari, Komang Ayu Laksmi Harshinta]]>;
<![CDATA[Hayati, Arina]]>;
<![CDATA[Samodra, FX Teddy Badai]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020) - IN-PRESS ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.12962/j23546026.y2020i6.11102
<![CDATA[Phenomenology in architecture is associated with perception between the subject and the space, which one of the studies includes multisensory experience. In general, contemporary architecture accentuates the visual experience, among other sensory modalities. Therefore, it is necessary to conduct research about the exploration of multisensory perception in architectural design. This study aims to explore how sensory activities or blind and visual impaired experience the spatial and the elements of architecture. This study is started by examining a brief literature review and then conducts qualitative research (in-depth interview and participant observation) to explore sensory experience and perception of blind people. The result finds from the five elements, walls and windows are the most influential elements for blind people. The existence of a wall has the potential to be a wayfinding of haptic system and has an echo effect. While the aperture opening element influences the illumination of light as well as indicators of outside space limits. The research outcome shows that people with visual impairment also acknowledge and they recognize these principles of design. They recognize contrast of temperature through the opening element, rhythm of texture through the wall, surface balance through the furniture, and hierarchy of noise through the window.]]>
<![CDATA[Catalytic Co-Cracking of Used Cooking Oil Methyl Ester and Polystyrene Waste for Gasoline-Rich Biofuel Over Mesoporous Al-MCM-41 Catalyst ]]>
<![CDATA[Nurfitriyah, Arifah]]>;
<![CDATA[Assari, Anas]]>;
<![CDATA[Pamungkas, Firman Satria]]>;
<![CDATA[Elliyanti, Ardita]]>;
<![CDATA[Darmawan, Ahmad Hawky]]>;
<![CDATA[Juwono, Hendro]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020) - IN-PRESS ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.12962/j23546026.y2020i6.11127
<![CDATA[Used cooking oil and packaging foam are typical waste materials that are abundantly available as household and fast food restaurant waste with high energy content, thus representing potential feedstock for conversion into an alternative energy source. In this study, catalytic co-cracking was examined at 300°C in atmospheric pressure to generate fuel products with gasoline-like properties from a mixture of used cooking oil biodiesel and polystyrene pyrolysis oil. Mixture of ceramic powder and Al-MCM-41 was used as catalyst in comparison to a pristine mesoporous aluminosilicate material. The product distribution of produced biofuel wes analyzed by gas chromatography – mass spectrometry. Experimental results exhibit that catalytic co-cracking process generated up to 64,6 – 67,2% yield of liquid hydrocarbon. The product distribution and the quality of the resulting biofuel were significantly affected by Si/Al ratio of the catalyst. Pristine Al-MCM-41 with lower Si/Al ratio was more favored for the enrichment of gasoline range fraction (C7–C12) which give 88,98% yield, while Al-MCM-41/ceramic with higher Si/Al ratio only give 32,84% yield of gasoline fraction. Moreover, lower oxygenate compound with better stability of biofuel was also obtained using pristine Al-MCM-41 catalyst. The produced biofuel blend by both catalysts indicated promising physical properties including higher calorific value (53,2 and 52,4 MJ/kg) and higher-octane number (RON 99,8 and 95,5) than commercial gasoline.]]>
<![CDATA[Job Standard Parameters from Online Job Vacancy ]]>
<![CDATA[Putro, Herlambang Haryo]]>;
<![CDATA[Rakhmawati, Nur Rakhmawati]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.12962/j23546026.y2020i6.8905
<![CDATA[The internet has provided an efficient and economical way to provide job vacancy information to applicants in a way that is far more dynamic and consistent than happened in the past. This is directly proportional to the number of companies exploiting online technology (job portals, company websites, etc.) to make job advertisements reach a growing audience. To further optimize the selection process concerning processing time and accuracy, researchers have begun developing a sophisticated search engine to automatically sort resumes based on job offer requirements. Overcoming this problem requires the Information Extraction (IE) process. Research on IE regarding vacancies actually already exists and has been applied. Research on IE regarding vacancies actually already exists and has been applied In addition, we want to develop previous research involving all job vacancies websites to a wider extent. We realize that this limitation makes the extraction process difficult. we try to define job problems more easily, such as identifying various JSPs on job vacancy websites in Indonesia as a first step in the extraction process. Our findings in the survey of 14 job vacancy websites are 26 job standard parameters including structure collection and extraction methods. This study provides a detailed description of each component of information extraction on the job vacancy website in Indonesia. Starting from identifying the type of Structured Extraction to the output of extraction. This study also developed JSP from previous research.]]>
<![CDATA[Subcontractor Selection Review Industry XYZ With Analytic Network Process (ANP) Method ]]>
<![CDATA[Septian, Ardianto]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020) - IN-PRESS ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.12962/j23546026.y2020i6.11159
<![CDATA[In the steel construction of the Kendari Newport Container Facilitiy and Utilities Project's which was undertaken by the XYZ Contractor, there was a problem. Until the contractor issued a warning letter against the selected subcontractor because of delays in work. This research aims to examine the stages of selection subcontractors whether there is an error in decision making that causes delays work by subcontractor that selected as a partners.Therefore, decision makers need right selection methods. Multi Criteria Decision Making (MCDM) method is an appropriate method for the selection of several criteria. One of them is the Analytic Network Process (ANP) -Risk Assessment method.Based on the analysis using the ANP method ,sub-criteria with the highest priority weight is the bid price with a weight of 17.13%, The final results of the overall analysis showed that subcontractor B get in first place with a score 2,97. In this research subcontractor B has the highest value, which means that the subcontractor is feasible and accordance with the assessment of XYZ Company to be a partner to doing the steel construction work in this case study]]>
<![CDATA[Do Liquidity, Asset Quality, Firm Size, and Efficiency Affect Bank Profitability? Evidence from Indonesia Stock Exchange ]]>
<![CDATA[Puteri, Ni Komang Ardini Febrianti]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 1 (2020): The 1st International Conference on Business and Engineering Management (IConBEM) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.12962/j23546026.y2020i1.10862
<![CDATA[Nowadays modern economy cannot be thought without banks. The commercials banks listed on the Indonesia Stock Exchange (IDX) is expected to be a strong and highly competitive bank, which contribute to the growth and even distribution of sustainable regional economies. However, there are still 28 banks that have negative trend in 2019. The purpose of this research is to analyze whether the LDR, NPL, SIZE and BOPO have significant influence simultaneously and partially to ROA commercial banks listed in Indonesia Stock Exchange (IDX). The study followed a descriptive research design and used secondary data obtained from the company annual reports and partly from the commercial banks. There is one basic theory about signaling theory and previous research found some propositions: 1) LDR have significant effect to ROA, 2) NPL have significant effect to ROA, 3) SIZE have significant effect to ROA, 4) BOPO have significant effect to ROA. The implication of this research is expected to be used as consideration in overcoming the problem to improving bank health, especially on bank profitability.]]>
<![CDATA[Analysis of Customer Satisfaction in Construction Companies Using QFD Method ]]>
<![CDATA[Suhada, Dharma]]>;
<![CDATA[Syairuddin, Bambang]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 1 (2020): The 1st International Conference on Business and Engineering Management (IConBEM) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.12962/j23546026.y2020i1.11339
<![CDATA[The study adapted the QFD model as main framework for analyzing service quality by using of service quality dimensions (tangibility, reliability, responsiveness, assurance, and empathy. The research used the questionnaires that were distributed between twenty respondents who are the consumers of that company. The survey analyzed the consumers’ needs of houses and the ways for improving the quality of services. The outcomes of the study display that the top priority for customer satisfaction, such as name the suitability of the project report with actual conditions in the field; Ability to complete within deadlines; Service level after completion; Application of work procedures and instructions for completing projects; Project workers' expertise in using equipment in the field; Level of trust in communication follow-up; Discipline and compliance with agreed project schedules and Fulfillment of construction functions. While the technical response given by the company to increase consumer satisfaction are Monitoring the results of reports with the field by Project Control; Training of contractor field supervisors; Monitoring the communication system periodically; Training in the use of work equipment; Periodic S curve monitoring; Improved technical communication between the person in charge with the representative of the employer; Periodic SOP briefing; and Giving reward and punishment to Project Managers and Field Teams.]]>
<![CDATA[Dynamic System Modeling of Renewable Energy Diversification at ITS Surabaya as a Sustainable University Management Effort ]]>
<![CDATA[Arishinta, Ayasophia]]>;
<![CDATA[Suryani, Erma]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020) - IN-PRESS ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.12962/j23546026.y2020i6.11093
<![CDATA[Diversification is an effort to diversify various energy sources through reducing the use of fossil energy sources and substituting them with other energy sources including RE in order to optimize energy supply. Meanwhile, energy conservation is a systematic, planned and integrated effort to conserve existing energy resources and increase the efficiency of their use. Energy has a very significant role in human life in all sectors. Where energy demand in the commercial sector such as offices and services is still largely dominated by electricity around 60% -70%. Where the management is still largely managed by the State Electricity Company (PLN). The electricity consumption of the ITS Surabaya campus in 2019 around 9,586,857.72 kWh / year is still supported by PLN with a total expenditure of more than 9 billion. Considering the Indonesian government's program on the Target of Diversification of RUEN at least 23% in 2025 and 31% in 2050 and one of the 2030 Agenda for Sustainable Development Goals (SDGs) globally namely clean and affordable energy, the ITS Surabaya management effort is to achieve diversification of energy sources 50% renewable as stated in the 2015-2020 RENSTRA Target. The effort to diversify this renewable energy is by building a 16 KWP On Grid Solar Power Plant in the Research Center Building, which has produced around 26,290.92 kWh / year during the 2019 period.]]>
<![CDATA[Design of Resources Monitoring and Controlling System on Aircraft Maintenance Project in XYZ MRO ]]>
<![CDATA[Rachmatulloh, Yendy]]>;
<![CDATA[Ginardi, Raden Venantius Hari]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 6 (2020): 6th International Seminar on Science and Technology 2020 (ISST 2020) - IN-PRESS ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.12962/j23546026.y2020i6.11150
<![CDATA[Maintenance Repair and Overhaul (MRO) XYZ is a company engaged in aviation / aviation, especially in aircraft maintenance. MRO XYZ can work on the maintenance of several types of aircraft and its components in accordance with the certification and permits owned by MRO XYZ. The vital aspects that must be regulated in an aircraft maintenance project include the engineer involved in the maintenance process and the manhours calculation system who must be able to explain every detail of the work on an aircraft maintenance project. In addition, other resources such as consumbale material and raw material must also be monitored and controlled, so that management team can obtain COGS as optimal as possible in the project and profitability can increase. This research was built to provide solutions to the aircraft maintenance process stakeholders in meeting vital information needs that must be continuously monitored and based on this information, the system built will be able to control the ongoing maintenance process of the aircraft, in accordance with regulations.]]>
<![CDATA[Lean Mining Analysis in Gold Mining Use Waste Assessment Model ]]>
<![CDATA[Indriyani, Liga]]>;
<![CDATA[Singgih, Moses Laksono]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 1 (2020): The 1st International Conference on Business and Engineering Management (IConBEM) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.12962/j23546026.y2020i1.10853
<![CDATA[This research identifies non-value added activities and minimizes waste in the production process at a gold mine. Problems that occur include the presence of waste defects in the form of choke ore materials, mismatches in dore bullion printing, and equipment damage. Then the waste waiting caused by low-level bin ore and the presence of ponding during leaching. In addition, there is also waste over processing in the form of carbon regeneration and transportation processes in the form of altered and distant ore transportation distances. The occurrence of waste can be reduced/eliminated using the Lean Mining approach which is a method to streamline the process by eliminating/reducing the presence of waste in the mining process. Identify waste using the Waste Assessment Model (WAM) tools. The results of the analysis show that the highest waste rating is a defect, motion, waiting, and process with successive percentages of the largest i.e. 20.75%, 18.42%, 17.57%, and 14.36%. From these results then recommendations for improvements that can be proposed are controlling the size and composition of ore-sized mixtures, increasing the efficiency of the crusher using TPM analysis, optimizing maintenance, making machines/systems automatically filling gold solutions, and making standardized work]]>
