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All Journal Jurnal Teknik ITS IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Journal of Civil Engineering Jurnal Teknik Warta Ardhia : Jurnal Perhubungan Udara Jurnal Sains Teknologi dan Lingkungan (JSTL) Jurnal Aplikasi Teknik Sipil Jurnal Transportasi: Sistem, Material, dan Infrastruktur Journal of Infrastructure and Facility Asset Management Journal of Ekonomics, Finance, and Management Studies Jurnal Penelitian Transportasi Darat
Ahyudanari, Ervina
Civil Engineering Department, Institut Teknologi Sepuluh Nopember
Religion Agriculture, Biological Sciences & Forestry Arts Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Transportation

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Journal : IPTEK Journal of Proceedings Series

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Strategy Selection of Property Business in Transit Oriented Development Area (Case Study PT. XYZ) Sulaksmono, Haris; Ahyudanari, Ervina; Ma’ruf, Buana
IPTEK Journal of Proceedings Series No 5 (2019): The 1st International Conference on Business and Management of Technology (IConBMT)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (633.746 KB) | DOI: 10.12962/j23546026.y2019i5.6370

Abstract

The property business in 2018 did experience a downward trend because of the high backlog caused by oversupply. But the prospect of the property business in 2019 is quite promising and is believed to continue to prosper. The research base is a case study at PT XYZ, one of the subsidiaries of BUMN Construction Services which is engaged in the development of the property of the Transit Oriented Development (TOD) area of the Light Rail Transit (LRT) in Jakarta. This study aims to obtain a superior strategy in the competition of the property business in the TOD region which makes added value for PT XYZ so that it can compete with other developers. The company's strategy for PT XYZ was formulated using David's strategy formulation framework, which consisted of input stages, matching stages and decision stages. The Analytical Hierarchy Process (AHP) is used to determine the weight of internal and external strategic factors and Quantitative Strategic Planning Matrix (QSPM) to determine alternative chosen strategies. Based on the results of the QSPM assessment of PT XYZ, founded the construction and pre cast concrete division strategy gets a Total Attractive Score (TAS) of 5.60, higher than PT XYZ cooperates with top property marketing companies for 3 years strategy that gets a score of 4.12
Analysis of Air Traffic Density using GIS, Case Study: Jakarta-Surabaya Sekartadji, Ratih; Ahyudanari, Ervina; Jaelani, Lalu Muhamad
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i6.3288

Abstract

The growth of air transportation is encouraged by high demand to travel fast. Jakarta-Surabaya route is placed as the fourth busiest traffic in the world. This busy route still possible to increase, unless there is an alternative mode of transport to serve the demand of this route. Aircraft flies at a certain flight level that is influenced by the flight distance and the type of aircraft. Jakarta-Surabaya route is served by aircrafts with different types. This means that some flight levels between Jakarta and Surabaya are occupied by these serving aircrafts. On the other hand, at the same flight level, there will be some other planes for other routes. This research attempts to picture the density of the flight level of Jakarta-Surabaya route. The density value will be useful to predict the air quality and the available air space to add the flight frequencies. Data collection of Jakarta-Surabaya flights was aimed to identify the occupied flight level by this route. For other routes that may be crossed or in line with the Jakarta-Surabaya route, are derived from International Civil Aviation (ICAO) Charts. Incorporating the route volume resulting the traffic derivation from the charts and scheduled flight into the network attribute of GIS. Data histories of the flight density from ICAO Charts are used to predict the future density utilizing the GIS. The horizon year for this research is year 2030 where some airports will be improved into higher level airport groups, according to PM No. 69 year 2013.
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.
Oil Prices Sensitivity to The Power Supply Procurement Project at PT PEP Sukowati Pangestu, M. Agus; Utomo, Christiono; Ahyudanari, Ervina
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.y2020i3.11207

Abstract

This study intends to determine the sensitivity of changes in oil prices to investment in power supply projects from the financial aspect. The investment analysis conducted is an evaluation of Net Present Value (NPV) using the production sharing contract (PSC) model with a profit sharing system. Based on the analysis conducted, the sensitivity of changes in oil prices has a very significant effect on the project NPV. Changes in oil prices by 60% from the base case to US $ 80 caused NPV to rise by 183%. But on the contrary if the price of oil touches the figure of US $ 20 or -60% from the base case, it will make the NPV negative, so the project is not economical to proceed. In addition, it know that the acceptance limit of investment in power supply projects is at oil prices greater than US $ 34 per barrel. This significant change in both the decline and increase in oil prices to the NPV is very logical because oil prices determine the amount of revenue earned from this project.
Analysing Properties of Asphalt Concrete Modified with Crumb Rubber Compare to Other Mixture Abdallh. A. A. Lhwaint; Mohmed Alshekh A. M. Hmade; Ervina Ahyudanari; Indrasurya B. Mochtar; Abrahem A Ali blash
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (566.9 KB) | DOI: 10.12962/j23546026.y2017i6.3248

Abstract

Several  researchers have been undertake in finding alternative materials in order to be used as a modifier in asphalt mixture for the purpose of improving its properties. This research presents a study of laboratory evaluation on the performance of hot-mixed asphalt (HMA) using crumb rubber as an additive. It is noted that crumb rubber was identified to have potency as a modifier in HMA due to the elastic behavior exposed by the rubber particles, especially in reducing the rutting potential. This study fine crumb rubber Shred (2.36-0.85 mm) obtained by ambient-temperature grinding process from discarded truck tires, was used to modify asphalt concert. The fine crumb rubber with different contents, i.e. 2.5%, 5%, 7.5% and 10%, was incorporated into the mixture by using dry and wet process method in differentent temperatures. The Marshal properties, Unconfined Compressive Strength (UCS), Indirect Tensile Strength test (ITS) and Indirect Tensile Strength Modulus (ITSM), Permeability   were conducted. The result showed that marshal stability, Marshal Quotient, Voids in Mix (VIM) and Voids in mineral aggregate (VMA) decreased with the increasing crumb rubber modifier. However, Marshal Flow and Void filled with asphalt (VFWA) increased when crumb rubber modifier was increased. The crumb rubber asphalt mixture result indicated has increased amount of crumb rubber in asphalt concrete mixture will decrease the Marshall Stability and permeability test shows that asphalt concrete without crumb rubber lower than AC with crumb rubber strength compare to other mixture.
Customer Loyalty Behaviour Brand Air Conditioner XYZ: Combination of Expectation- Confirmation Theory, Satisfaction – Loyalty, and Brand Reputation Edi Supriyono; 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.y2020i3.11206

Abstract

List of Selected Providers (LSP) is a list stating that goods/ service providers have passed the qualification assessment mechanism at PT XYZ. The qualification assessment process is an important stage in the process of goods/ service procurement because it affects the success of a project. Up to now, the qualification assessment process at PT XYZ has not been managed comprehensively, resulting in delays or failure of project completion. Therefore, to get a qualified and best provider of goods/ services, the qualification assessment process using the Analytic Network Process (ANP) is necessary to be carried out. The process of this research started from selecting criteria through the Delphi method, then performing a pairwise comparison using questionnaires on each of the criteria identified. Subsequently, the data were processed using the ANP software, namely Super Decisions Version 3.2.0 to obtain the weight of each criterion. The next stage was to carry out an assessment of the goods or service providers following the LSP process. The final result of this research was to obtain the weight of each qualification criterion to determine a competent and threshold-passing provider projected to be included in the LSP.
Delay Identification of the HVAC Project on West Madura Offshore Oil Company Using the House of Risk Method Gunawan Kunto Bhasworo; Ervina Ahyudanari
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.y2020i6.8899

Abstract

This research is focused on the analysis of delays or risks to the implementation of the "Procurement and Installation HVAC Installation" contract at West Madura Offshore Oil Company, which has a working area in the Offshore area. This study uses the HOR (House of Risk) method as an alternative to the ISO31000: 2009 risk management method that has been used internally by West Madura Offshore Oil Company The basis for selecting the HOR (House of Risk) method is the existence of a tool to see the impact (severity) and relations (relations) between the event of a delay and the factoring agent. In identification of the cause of the delay the method used are collecting data primary through Focus Group Discussion between Internal Expert and Secondary data which use project data for Offshore HVAC Project in the period of the year 2016-2018. The HOR (House of Risk) method in conducting this process is presented as follow review historical data and related document, Focus Group Discussion as information gathering techniques, Risk analysis and Risk Register. There are five significant risks from the results of research using the HOR (House of Risk) method, namely Poor-quality shop and coordination drawings, weather constraints, limited quantity and quality of HR (contractors and subcontractors), Absence of duct fabrication workshops at the site and lack of communication between contractor and subcontractor.
Design and Development of Data Management System to Support The Preparation Process of Accreditation form for Program Study Artin Finalita; Ervina Ahyudanari
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.y2020i1.8486

Abstract

In order to realize public accountability, the program study must actively build an internal quality assurance system. To prove that the internal quality assurance system has been implemented properly and correctly, the program study must be accredited by an external quality assurance institution. Criteria for evaluating commitments in accreditation are outlined in number of standards and are presented by programs study in instruments of forms. The problem that arises is that data/ documents for the process of supporting accreditation forms are not all available in the Program Study so they still have to involve other units to obtain them. The purpose of this study is to design a data management system to prepare the availability of data / documents to support the process of preparing accreditation forms. The System Development Life Cycle (SDLC) method is used with the waterfall model in designing this system. This research has produced an application system called Dokumen Akreditasi Online which is oriented towards standards of accreditation form. Overall the results of testing the system functionality shows that all features in the application can be run. The results of measuring the level of user satisfaction amounted to 75.27% which means that users are satisfied with this system. Thus, the need to prepare for accreditation is faster and easier and useful for other administrative needs.
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.
Application of House of Risk (Hor) Models for Risk Mitigation of Procurement in The Balikpapan Samarinda Toll Road Project Doddy Arief Wibowo; Ervina Ahyudanari
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.y2020i1.8481

Abstract

The Balikpapan Samarinda Toll Road Project built 99 km has a relatively short implementation time of 3 years. The accuracy of project completion is closely related to the procurement of materials during the implementation period. Risk analysis based on ISO 31000: 2009 where the risk of delay in procurement of materials is included in the extreme category with a high level of probability and severe impact. Risk analysis is carried out qualitatively, that is, determining risk priorities by determining the likelihood of events and their effects on project performance. Material procurement delays still occur due to various factors that have not been mitigated in the planned risk analysis. This resulted in project performance not on schedule. The purpose of this study is to provide a proactive framework for managing material procurement risks. The method used is the House of Risk (HOR) from the literature study. The HOR method is very commonly used in supply chain risk management. The HOR method focuses on preventive actions determining the main risk agents and the priority of preventive actions. The advantages of this method are in the framework that can cover the whole process of risk management. Phase 1 of HOR begins with the identification of risk events and phase 2 of risk treatment. This framework allows management to select priority risk agents to be mitigated and prioritize proactive actions to reduce the impact of risk events. The results of the study are 14 risk events and 15 risk agents that can occur in the material procurement process. From the Paretto Diagram, 4 risk agents were selected, namely schedule changes became faster, bill payments required a long period of time, problems in supplier selection, and material fabrication time. Based on the analysis of preventive action 3 actions proposed in this study are coordinating with the finance department to monitor supplier bills, coordinate with production for proper procurement schedules, and evaluate suppliers.
Co-Authors Abda Abda Abdallh. A. A. Lhwaint Abrahem A Ali blash Adhyaksa Adha Rahman Aditiya Rendra Riawan Aditiya Rendra Riawan Aditya Sutantio Aftoni Alvin Fahmi Akbar Bayu Kresno Suharso Akhmad Ittang Anwarsyah Amani, Farrell Zata Andree Noviar Pradana Anwar Efendy Artin Finalita Ary Wahyudi Baskara, Gusti Made Bagus Caristyan, Griselda Amadhea Catharina Tiffani Wulandari Christiono Utomo Deanty Putri Maritsa Dian Ayu Wicahyani Dimas Bagus Satriyo Wibowo Dimita Brilian Zahra Doddy Arief Wibowo Edi Supriyono Eriza Islakul Ulmi Faisal Esa Arighi Fajrin Ramadhani Febriliyan Samopa Fitria Putri Luthfiyani Freedy Kristiawan Gumbiratno Widiatmoko Gunawan Kunto Bhasworo Halim Prasetyo Hutomo Hariyadi, Hariyadi Hendra Annisa Putri Lintang Hestuningrum Hendrawan Setyo Warsito Hera Widyastuti Hersanti Rahayu Hidayatul Amri Hitapriya Suprayitno, Hitapriya Hutapea, Sean Ivander Sahata I Gede Mardawa I Nyoman Arya Thanaya I Putu Artama Wiguna Ida Bagus Barawakya Iik Radevi Burhamsi Putri Ilham Siara Indra Denny Priatna Indrasurya B. Mochtar Istiar Istiar Jaballah, Danish Inayat Jaelani, Lalu Muhamad Januarti Jaya Ekaputri Karyawan, I Dewa Made Alit Kevin Andrea Larri, Rossan Fadel Lilla Anjani Birahmatika Ma’ruf, Buana Maulina Indah Harvianti Maulina Indah Harvianti Mirza Al Mahbubi Mohmed Alshekh A. M. Hmade Muhammad Galih Muhammad Irfan Ardiansyah Muhammad Nursalim Muhammad Rezky Ridwan Muhammad Yuanto Permana Muhtadi, Adhi Nur Iriawan Nursakti Adhi Pratomoadmojo Ofel Simon Pangestu, M. Agus Prastyanto, Catur Arif R. Haryo Triharso Seno Raihan Akbar Ghifari Rita Ambarwati Rizky Fitri Amalia Istighfaroh Rohmatul Maghfiroh Rosman Hidayatulloh Rungkat, Jersey Jehezkiel Elison Ruffi Salsabila, Dhea Lutfiyah Sekartadji, Ratih Shoffan Abdi Tunggal Stefanus Stefanus Sulaksmono, Haris Sulhan Sulhan Supriyanto, Supriyanto Suryawan Murtiadi, Suryawan Syarif, Iif Ahmad Taftazani Hakim Udyani Salma Widyaswari Wahyu Herijanto Wajdino Arfa Rajawidad Wasono, Sapto Budi Widhi Utomo Megantoro Widodo, Alvian Wahyu William Bunkharisma Windy Ariesna Wardhani Wiryanta, Wiryanta Youngky Riantara Putra