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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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The Implementation of Economic Order Quantity for Raw Material Planning in SME Producing Terasi Crackers Utami, R; Khadafi, S
IPTEK Journal of Proceedings Series No 6 (2018): International Conference on Advanced Engineering and Technology (ICATECH) 2018
Publisher : Institut Teknologi Sepuluh Nopember

Raw material planning in SME producing crackers is an essential matter since most of its raw materials do not last long and to avoid raw materials shortage or buildup stored in the warehouse. Therefore, the researchers offered a solution by implementing Economic Order Quantity (EOQ) method. From this research, it was concluded that the economic supply of raw materials (wheat flour) is 27.71 Kg with 14-day interval between orders, 6-day waiting time until the products are delivered, 16.47 Kg reorder point, 4.42 Kg safety stock value, and IDR 1,801,064 TIC.

Green Open Space Form/Morphology Characteristics Which Function Ecologically as Rain Water Absorber in Kalirungkut Subdistrict Tisa Angelia; Haryo Sulistyarso; Eko Budi Santoso
IPTEK Journal of Proceedings Series No 1 (2018): 3rd International Seminar on Science and Technology (ISST) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Growth of development in Kalirungkut Subdistrict with the functioning of MERR IIC road since 2010 is rapidly happening. The rapid development took place in the areas of trade and services, settlements, and industry as well as education. The growth development that caused the land use change is not balanced with the availability of Green Open Space (GOS) which is adequate as ecological function of rainwater absorber, thus becoming one of the causes of flood/puddle in Kalirungkut Subdistrict. Green open space to absorb rain water is part of a green infrastructure that integrates with city drainage in the form of storage and water absorption. The purpose of this research is to identify the characteristic of green open space form / morphology as an ecological function of rainwater absorber in Kalirungkut Subdistrict, by looking at the existing research benchmarks, drawing the conclusions of the analysis and making it a guideline in the development of green open space of further absorbent rainwater. This study uses a comparative descriptive analysis method. The selection of descriptive-comparative analysis is conducted to describe the comparison of existing green open space with standardization and supporting theories in the provision and development of green open space as an ecological function of rainwater absorber based on the aspects of existing research. The result of this research is the characteristic of the form/morphology of Green Open Space as ecological function of rainwater absorber in Kalirungkut Subdistrict which consists of Green Open Space form which functioned as water body in the form of water retention, the availability of garden & sports field, various types of vegetation and supporting material, Appropriate Green Open Space, and Absorption Ability of this type of land cover

Computational Fluid Dynamics Analysis into The Improvement of Seakeeping Characteristics of A Fast Craft Using AXE-Bow Romadhoni, Romadhoni; Utama, IKAP; Li, Binbin
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

It is obviously understood that hull shape affects the movement characteristics and operability of a ship. There are several ways which can be conducted in order to improve the operability of a ship one of those is by improving ship bow. Recent development known as AXE-Bow was introduced by Delft University of Technology in collaboration with DAMEN Shipyard, in the Netherlands. It was reported that the AXE-Bow can improve the seakeeping characteristics of the vessel at higher speed (Froude number above 0.60), such as reduce vertical acceleration. The current work is carried out numerically using Computational Fluid Dynamics (CFD) approach together with the use of CFD code called Hydrostar provided by Bureau Veritas (BV). The overall results showed that there are good agreement between CFD method and the work by Delft University of University and DAMEN Shipyard. Comparative studies were also carried out with published data and demonstrated similar findings

Identifying Great Street in Bandung as Part of Bandung Technopolis Concept: a Perception-Based Approach Dessy Syarlianti
IPTEK Journal of Proceedings Series No 3 (2017): 8th International Conference on Architecture Research and Design 2016
Publisher : Institut Teknologi Sepuluh Nopember

Great Street is required for making a great city. Bandung will develop new City Centre Service (CCS) in Gede Bage with Bandung Technopolis concept which one of the main programs is making Bandung Great Street. It is important to see potencies and problems based on the user perspective so that the concepts will be applicative and effective. Using the perception-based approach, this paper aims to identify the perception of the street user in Bandung based on their experience in using the streets in Bandung, so it can lead to a contextual concept. From Jacobs’s Great Street Criteria, the PPS’s criteria and Bandung Great Street criteria can be summarized into five normative variables such as activities, comfortable and amenities, walkability and transportation option, visual attractiveness, and local identity. The analyzed variables are preferences of the favorite street in Bandung, the reasons, the real usages of the street, the way of using the street, the companion in using the street, and the interesting things. These variables represent all normative variables which combined with three perception variables such as cognitive, affective and conative. After analyzing the data, it can be concluded that the respondents prefer Ir. H. Djuanda Street, Braga Street, and RE Martadinata Street as the most favorite street, and choose Cihampelas Street as the least favorite street

Number of Foreign Tourist Arrival Forecasting Using Percentile Error Bootstrap Based on VARIMA Model Hidayatul Khusna; Muhammad Ahsan; Dedy Dwi Prastyo
IPTEK Journal of Proceedings Series No 2 (2017): The 2nd Internasional Seminar on Science and Technology (ISST) 2016
Publisher : Institut Teknologi Sepuluh Nopember

Forecasting number of foreign tourist arrivals is important to improve the policies in the tourism sector. Better accuracy of forecast would help the government and investor to make operational, tactical, and strategic decisions. Data used in this research are monthly number of foreign tourist arrivals taken from Indonesia Central Bureau of Statistics. Multivariate forecasting at Soekarno-Hatta, Juanda, and Adi Sumarmo arrival gates was conducted using VARIMA ([12],1,0) (0,1,0)12 model. However, the longer step ahead to forecast, the larger variance error of corresponding models. As a result, the prediction interval become wider. This research computed the prediction interval using percentile error bootstrap based on VARIMA models that produced more precise forecast.

A Conceptual Model of Change Management for E-Government Project in Indonesia Sulistiyani, Endang; Susanto, Tony Dwi
IPTEK Journal of Proceedings Series No 1 (2019): 4th International Seminar on Science and Technology 2018 (ISST 2018)
Publisher : Institut Teknologi Sepuluh Nopember

Implementation of e-government projects in developing countries is mostly failed. Current studies found that most of these failures were caused by failure in managing changes. Meanwhile, government as an object of e-government projects in a country, especially Indonesia will provide its own uniqueness, While the current model of change management was still general. Therefore, it was necessary to develop a specific change management model for e-government projects in Indonesia. Model was develop based on methodology, that are: identify the common components; analyze the characteristics of e-government projects in Indonesia; and formulate the change management methodology. The result of the research was a specific change management model for e-government projects in Indonesia that consists of seven main components, which were set the change goal, form a change management teams, doing gap analysis, establish a desire to change, design new environments, implementing the change, and sustain the change. Regulation and leadership are the main driver of e-government project initiative in Indonesia. The components were mapped to SDLC phases and states of change

Development of a reverse supply chain model for electronic waste incorporating transportation risk Doan Thi Truc Linh; Yousef Amer; Sang- Heon Lee; Phan Nguyen Ky Phuc
IPTEK Journal of Proceedings Series No 3 (2018): International Conference on Industrial and System Engineering (IConISE) 2017
Publisher : Institut Teknologi Sepuluh Nopember

The quantity of Electronic waste (E-waste) is considerably growing due to the rapid development of technology. To diminish the influences of E-waste to the environment and recover raw materials, the reverse supply chain (RSC) has been examined. Most research focuses on minimizing the total cost of the system, however, does not integrate risk factors related to RSC operation. Risks generally derive from transportation activity in E-waste RSC such as delays for pick up, breakdown of trucks, the uncertainty of dangerous materials which might lead to disruptions and higher cost. Therefore, this paper aims to develop a mathematical model for minimizing the total cost of E-waste RSC which integrates transportation risk. A mixed integer linear programming is utilized in the model and addressed by an optimization software. The results of the proposed model can determine the optimal locations and the amount of used products transported within the RSC network. The numerical example also demonstrates that the movement of materials or components in the RSC network is considerably affected by considering transportation risk. The suggested model can assist decision makers about establishing RSC network in which risk elements are incorporated.

Effect of Sodium Hydroxide (NaOH) in Bitumen Separation Process from Asbuton in Hot Wate Hamzah, Afan; Ferdiansyah, Dita Ahmeta; Nurkhamidah, Siti; Taufany, Fadlilatul; Susianto, Susianto
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Hot water process is one of methods to separate bitumen from asbuton. For increasing %recovery of bitumen, we can modify the hot water process by adding diesel oil, sodium hydroxida (NaOH) and Sodium Ligno Sulfonat (SLS) as surfactant. This research was foccusing on effect of the addition of NaOH concentration. This research used asbuton from Kabungka and carried out in two processes, digestion and sedimentation process. % recoverey decreases with the increasing of NaOH concentration. The highest % recovery is 92% when ratio of diesel oil:asbuton 60:40, 0,5%wt SLS concentation, 30%wt SLS-NaOH solution from total solution and 1%wt NaOH concentration.

A structural model of creative industry for small medium enterprise innovation indexes Zafriana, L; Nasution, A H
IPTEK Journal of Proceedings Series No 3 (2018): International Conference on Industrial and System Engineering (IConISE) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Problems on Indonesia Small-Medium Enterprise (SME) are identified in the financial area, organization and management, network and export capabilities. There are numerous cases suggesting that SME problem lies in the competitiveness area, related with their innovation capabilities. Reducing its weakness, it is needed to build SME innovation indexes by using Structural Equation Modelling (SEM). This model is composed of 4 (four) construct variables, its technology, marketing/information, product quality, and organization management. All of variables will compose values of sub indexes dan efficiency market that determine the final value of SME innovation indexes in different criteria. The application of structural model on SME innovation indexes by using simulation data conclude that technology and marketing/information variables have impact on strategy sub indexes as 5,3%. Quality product and management/organization variables have impact as 149,8% on market efficiency. By using normalization value, the biggest role as 96% is determined by product quality and management organization, the rest of 4% come from technology and market/information. Sub indexes variable and market efficiency have impact on SME Innovation Indexes as 49,4%.

Analysis of Land Cover Change of Lake Rawapening with Sentinel 1 - Synthetic Aperture Radar Data Jaelani, Lalu Muhamad; Putri, Rizky Annisa
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

â€• Approximately 90% of freshwater on the earth surface is stored by lakes and reservoirs that provide benefits for human life such as for daily water needed, industry, agriculture, transportation, hydroelectric power and tourism. Most watersheds (DAS) and lakes in Indonesia have experienced the quality and quantity degradation caused by population growth, land conversion and erosion. Lake Rawapening in Central Java is one of fifteen Indonesian National Priority Lakes that should be seriously monitored and well managed. For routine monitoring of land cover change of the lake and its watershed, an optical remote sensing data that generally used was facing a problem related to cloud cover over the area of lake. In this research, we propose the utilization of Sentinel 1A, an active RADAR remote sensing data which can penetrate the cloud, thus more effective for observing land cover changes. The classification result of December 2016 data has strong relationship with field object (Kappa= 94.218%). All water objects were recognized as water, 94.595% of wetland were recognized as wetland (others as water), 91.379% of vegetation were recognized as vegetation (others as agriculture), 95.238% of agriculture were recognized as agriculture (others as urban) and 96.774% of urban were recognized as urban (others as wetland and agriculture). During May and December 2016, the landcover change was triggered by high precipitation in December and rapid-uncontrolled growth of water hyacinth in May. During May and December 2016, the landcover change was triggered by high precipitation in December and rapid-uncontrolled growth of water hyacinth in May.

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