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INDONESIA
INSIST (International Series on Interdisciplinary Research)
Published by Universitas Lampung
ISSN : -     EISSN : 25028588     DOI : -
Core Subject : Education,
Other
INSIST is an International online journal which publishes innovative research papers and critical reviews in the field of engineering and interdisciplinary science researches. It focuses on but not limited to Electrical and Telecommunication, Mechanical Engineering, Chemical and Environmental Engineering, Civil and Architecture, Geophysics Engineering, Material Physics, Applied Sciences and Biomedical Engineering. The over-riding criteria for publication are the originality, scientific quality and interest to the interdisciplinary research.
Arjuna Subject : -
Articles 102 Documents
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Analysis of Stability, Resistance, and Seakeeping Accord to Dimension and Form of Fishing Vessel 10, 20, 30 GT Irvana, Rizky; Fadillah, Arif; Manullang, Shanty; Fridolini, Fridolini
International Series on Interdisciplinary Science and Technology Vol. 4 No. 1 (2019)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v4i1.199

Abstract

Fishing vessels used to catch resources from the sea has to pass some of the regulations from International Maritime Organization for sea-worthiness of the vessel especially about stability, resistance to acquire the highest velocity, and the vessel’s motion. This research discusses the effect of the vessel’s dimension and the hull shape by using the stability standard from IMO.The result shows that the ratio of the B/T which meets the stability criteria is 2.50 with the ratio of KG/H of the vessel is 0.65, with the assumption that the KG and H of the vessel are more than 0.70. Whereas if the resistance ratio B/T is big, the resistance for the vessel will be relatively smaller. In terms of the vessel motion, a vessel with a V-type hull will better than a U-type hull in seakeeping.
Development of Horticultural Supply Chain with Value Co-Creation to Improve Farmers' Competitiveness and Incomes Azka, Muhammad; Samangi, Arfina; Naufal, Muhammad; Perdana, Tomy
International Series on Interdisciplinary Science and Technology Vol. 4 No. 1 (2019)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v4i1.205

Abstract

Vegetables are one of the horticultural commodities that have high economic value and opportunity in the market. However, vegetables supply chain in Indonesia is often identified with the traditional supply chain of long marketing chains, difficult market access for farmers, low competitiveness, farmers’ low income, and injustice to supply chain actors, especially between farmers and wholesalers. In creating a structured supply chain, value co-creation intervention applied to synergize farmers and wholesalers in Ciwidey Sub-district to understand each other’s problems then seek solutions to solve them. This research has been conducted in Ciwidey Sub-district, West Java. This research aims to measure the competitiveness and farmers income of each wholesaler’s group before and after value co-creation intervention. The result shows that variables competitiveness and income of Sari Hejo Farmer Group and Hidayah Alam Farmer Group have significant positive changed, while one of three indicator variable of competitiveness has not significantly changed.
GUI Design for Comparative Output Signal DFT and DTFT with LabVIEW Astharini, Dwi; Aulia, Tsaura; Wulandari, Putri; Alamtaha, Rahmat; Afisha, Rifqy
International Series on Interdisciplinary Science and Technology Vol. 4 No. 1 (2019)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v4i1.210

Abstract

An application GUI (Graphical User Interface) is designed as a software simulation to compare the output signal of DFT and DTFT. DFT (Discrete Fourier Transform) and DTFT (Discrete Time Fourier Transform) are part of the digital signal processing. Digital signal processing is an analog signal processing method uses a mathematical technique to perform a transformation or retrieving information in digital form. One of the benefits of digital signal processing is to facilitate the representation of the signal, because the signal in digital form will be more visible, easily processed and has high accuracy. This GUI application designed using LabVIEW from National Instruments.  LabVIEW is a software graphical programming or a block diagram. LabVIEW program known as VI or Virtual Instrument. The input signal in this application is a square signal
Rice Supply Patterns in Kalimantan Selatan: Part of solution for regional food security Akbar, Arief RM; Wibowo, Alan Dwi; Rahmi, Alia; Prabawa, Sigit
International Series on Interdisciplinary Science and Technology Vol. 4 No. 1 (2019)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v4i1.214

Abstract

South Kalimantan is a largest rice producer in Kalimantan island. More than five years its rice met by their own production, moreover it has supplied to other area such as Kalimantan Tengah, Kalimantan Timur and Kalimantan Utara. In many studies, rice stocks play a critical role in determining the regional’s food security. In recent issues, rice stocks has a wide impact on an array of economic, political, societal stabilities. Unfortunately, most of the land in Kalimantan Selatan is classified as wetlands, where the land productivity is low. Therefore, this study analyzes rice supply patterns in Kalimantan Selatan in order to provide policies development toward rice self-sufficiency. This research is using system dynamics approach to explore the system which then develop any alternatives of rice policies. Eventually, this study provides evidences for the need to consider rice supply system in the regional’s food security policies.
Bitcoin mining, the way to process transaction information or the way to make money? Cao, Jiangdong; Cao, Wei
International Series on Interdisciplinary Science and Technology Vol. 4 No. 1 (2019)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v4i1.191

Abstract

Bitcoin is a crypto currency introduced by Satoshi Nakamoto in 2008. It has the features of decentralization cross-border and fixed total amount and has become one of the most widely used crypto-currencies. Bitcoin, as a new digital currency system, innovatively makes the use of cryptographic elements and consensus mechanisms and builds up a secure decentralized system. The Blockchain, as the core of Bitcoin, uses peer-to-peer network communications and backs up transaction data in every node of the system, thus creating a huge distributed public book.  It is essentially a decentralized distributed ledger database, and the decentralization means that the transaction is broadcast to the entire network, where everyone is involved in book keeping. In order to make every participant in the Blockchain willing to participate in the bookkeeping, the reward mechanism of the Bitcoin system is mining. This article first introduces the concept of Blockchain technology, then expounds the principle and the operation mechanism of the Bitcoin and the Bitcoin mining principle, introduces an example of Bitcoin mining in-depth study and analysis, finally, summarize and prospect the development of the Bitcoin mining.
Flood Early Warning System with Informational Technology for Reducing Risk of Loss in Sustainability of City Supani, Ahyar; Agustin, Maria; Andriani, Yuli
International Series on Interdisciplinary Science and Technology Vol. 4 No. 2 (2019)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Palembang is divided by Musi-river consisting of two parts of city called Hulu and Hilir. it has a height of Musi tide surface about 0.7 m to 2.2 m and average high rainfall 101.48 mm/hrs in a year so that it always happen flood every year. In tackling flood, Palembang goverment has did rehabilition of canals, river dredging, creation of retention ponds, demolition of illegal building on the banks of river and the extension services provided to the public about the cleanliness of the river. In addition in this study, it has been also applied infomational technology to tackle the flood in Palembang as early warning system. The flood early warning system that was built for measuring rainfall and water level, predicting flood condition using fuzzy logic and conveying data containing rainfall, water level and flood condition via short message service to people. In test, it was succesfull measuring water level up to 5 metres and rainfall  up to 380 ml/minutes and more, forecasting the flood conditions namely standby 2, standby 1 and flood. Hence, it was also successfull sending short message service containing rainfall, water level and flood conditions automatically. In addition, the increase of rainfall caused the increase of water level and change of flood condition. Meanwhile, it was based on study that the flood early warning system was the key element of disaster risk reduction. From the results, it can be concluded that flood early warning system resulted on flood for 5.0 m, 320.31-418.33 ml/minutes, S1 for 4.0-5.0 m, 243.33-647.5 ml/minutes, S2 for less than 3.6 m, 414.17 ml/minutes. It succeeded in sending data of rainfall, water level and flood as much as 15 times to community's cellulerphone automatically so that it is reducing risk of loss againts flood and maintaining sustainability of city.
Simulation of Cement Mill to Predict and Mitigate the Over-Heat Phenomenon: an Approach to Optimize the Energy Consumption in Cement Industry Petrus, Himawan Tri Bayu Murti; Kristanto, Jonas; Wanta, Kevin Cleary; Prasetya, Agus
International Series on Interdisciplinary Science and Technology Vol. 4 No. 2 (2019)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

being one of the most energy-intensive industries, cement industry requires to evaluate the energy efficiency of their operating units, one of them is cement mill. Functioning as a mixing unit of several materials, i.e., clinker, limestone, gypsum, and trass with their initial heat and propensity of heat generation during milling, over-heat in the cement mill occurs frequently. It should be avoided in order to establish efficiency. Therefore, a mathematical model was generated in this study to predict and to mitigate this overheat phenomenon. This cement mill mathematical model has been generated using mass and energy balances. The output of the model is temperature profile versus residence time with targeted water content of the product that the optimum residence time can be calculated. Based on the temperature profile with a targeted water content of the product, it can be concluded that the optimum operating condition of the cement mill lies in the range of 5 to 30 seconds of materials residence time in the cement mill
Manganese Recovery from Hydrocracking Spent Catalyst Using Citric Acid and Its Kinetics Petrus, Himawan Tri Bayu Murti; Sari, Dewi Purnama; Yuliansyah, Ahmad Tawfiequrrahman; Mufakhir, Fika Rofieq; Astuti, Widi; Iskandar, Yusuf; Bratakusuma, Danu; Virdhian, Shinta
International Series on Interdisciplinary Science and Technology Vol. 4 No. 2 (2019)
Publisher : Universitas Lampung

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Abstract

Aiming for recovery and kinetics of manganese from hydrocracking spent catalyst using citric acid, this study has been conducted. In order to justify the performance of citric acid, a comparative study has been conducted using both inorganic and organic acids in the same pH condition of about 1,5 - 2. pH was used as the controlled variable due to the different dissociation degree of the acids. In comparison to that of inorganic acid, the manganese recovery is four times higher when citric acid was applied. Acetic acid performed 33% lower in manganese recovery compared to the citric acid. Moreover, kinetics study was conducted with three varying temperature of 30C, 60C, and 90C. From the resulted data, it can be concluded that the kinetics of mengan leaching from spent catalyst using citric acid is in accordance to the shrinking core model. The controlling step is product diffusion with activation energy (Ea) of about 23.27 kJ/mol calculated using Arrhenius expression. With higher selectivity and leaching reagent which is harmless to the environment, the application of citric acid in manganese leaching from spent catalyst will indeed support the enactment of sustainable development aspect in recycle processing
Spatial Identifications and Strategies toward Creative Village in Bandar Lampung City Persada, Citra; Nandang, Nandang; Nugroho, Agung Cahyo
International Series on Interdisciplinary Science and Technology Vol. 4 No. 2 (2019)
Publisher : Universitas Lampung

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Abstract

Urban village as a historic village has a high physical, social and cultural values that needs to be preserved. Kampung Negeri Olok Gading has been designated as a cultural and historical village by the Government of Bandar Lampung City, however it is constrainted by the development of the surrounding area. The purposes of this study are: (1) to know the pattern and variety of activities within the village as a creative village embryo; (2) to know the physical condition, functional condition and environmental condition of the kampung; (3) to formulate the physical arrangement strategy in transforming Kampung Negeri Olok Gading become Urban Creative Village. This research uses descriptive analysis methodology through empirical study to existing condition. Through empirical tracking of the physical elements of the area, it is known that there are significant changes to the condition of the urban village such as: the changing of land use and building, the changing of the building and the environment. The main strategy that can be applied to transform Kampung into the creative village is the integrated conservation of the area which include physical, social and cultural aspects
Empirical Study on Big Data Analysis for Supply Chain Management Paul, Subhra Prosun; Saha, Shormee
International Series on Interdisciplinary Science and Technology Vol. 4 No. 2 (2019)
Publisher : Universitas Lampung

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Abstract

with globalization, outsourcing is reaching beyond continents. Design is done in one part of the world, manufacturing in another low-cost country and distribution to other countries in the world. Procurement is illuming as a central focus that requires to be synchronized with all other business functions. As a matter of course, a sizeable amount of a firm’s revenue goes for its supply chain that interprets the significance of the supply chain lays in a firm’s bottom-line. So, the supply chain has a tremendous opportunity to get used of data. Nowadays, the supply chain is attracting much and more attention because in terms of analytics it is behind other functions of a firm.  Specifically, this paper will (1) redefine, by research on scientific work, what BDA means in the context of Supply Chain Management, and how it differs and has evolved from analytics technologies; (2) evolve taxonomy of Big Data within SCM that identifies and classifies the different sources and types of data arising in modern supply chains and (3) suggest some applications of BDA and show the potential high value of this technology offers to solve intricate SCM challenges.  This research tries to explore how the behavior of Big Data can succor procurement and SCM in greater decision making. Big data can be a lightening of a resilient environment while managing suppliers in global SCM is a challenging task. Another studied aspect is having access to a greater pool of data and what kind of potential data can render benefit SCM. SCM professionals were interviewed to understand what they expect from their logistics, procurement and marketing systems and how Big Data can contribute to that. What type of transparency is needed? What requires to be automated? What delineation of data is useful? Furthermore, how Big Data can help with SCM risk management.

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