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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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Risk Assessment Approach in Airport Security Sadono, Mahardi; Harahap, Saphira Alifa; Putra, Dani Yulianto; Randhy, Randhy; Nurhakim, Muhamad Luthfi Imam
International Series on Interdisciplinary Science and Technology Vol. 2 No. 2 (2017)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v2i2.86

Abstract

Naturally, the threat to flight is generated from all activities at the airport by passenger or freight. With the growth of air transport, the level of threat to flight activity will also increase. Due to ensure the security of passengers, staff, and all elements of the airport, the airport as a place of the flight operations need a reliable protection system. The purpose of this study is to develop a methodology for assessing the risk level at the airport in order to improve the level of protection at the airport. The level of threats that could jeopardize airport security is categorized into several levels, then analyzed to what extent the risk level can be tolerated as a reference to the formulation of standard protection systems at the airport. The results of this study can be used to deal with threats that occur in the airport through preventive action by setting up a reliable protection system. The risk assessment approach also able to evaluate the airport's existing protection system whether it is tolerable to deal with threats or not, so action can be taken to improve the protection system if the failure rate is still high and have massive consequences to the all airport elements.Keywords— airport security, failure rate, protection system, risk assessment, tolerable risk level.
The Effect Catalyst Natural Zeolite of Lampung On The Synthesis Of α-Terpineol From Turpentine Utami, Herti; Ginting, Simparmin Br.; Sulistiowati, Dwi Derti; Hermiyati, Ria Putri
International Series on Interdisciplinary Science and Technology Vol. 2 No. 2 (2017)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v2i2.87

Abstract

The major component of turpentine is α-pinene. Alpha pinene can be hydrated using an acid catalyst to produce α-terpineol. It can be used as a perfume, anti -insect, and disinfectants. The using of heterogeneous catalysts as natural zeolite can be a new alternative to replacehomogeneous catalysts. The purpose of this study was to determine the effect of zeolite catalysts and the reaction time which resulting the highest conversion on hydration reactions of turpentine to α-terpineol. Parameters were the effect of catalyst concentration of (5%, 10% and 15%) and the reaction time (60 minutes, 120 minutes and 180 minutes). The turpentine, aquadest and isopropyl alcohol were reacted in the three neck flask at the temperature of 70°C. The result of this study showed that the best condition the hydration of turpentine α-terpineol was achieced at 15% catalyst concentration and the reaction time of 180 minutes. The convertion was obtained to be 4.875%.Keywords— Turpentine, Hydration, Alpha terpineol, Catalys,Natural Zeolite.
DECEPTIVE IS EFFECTIVE NEGOTIATION STRATEGIES TO CUSTOMERS FOR USING CONDOMS CONSISTENTLY Megaputri, Putu Sukma; Prima, Putu Kusuma Dewi Dian; Sari, Cindy Meilinda; Rismayanti, I Dewa Ayu
International Series on Interdisciplinary Science and Technology Vol. 2 No. 2 (2017)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v2i2.88

Abstract

The Consistency of condom use by the sex customers is very low. These problems occur due to the lack of negotiations carried out by the sex workers into their customers. This study aims to determine the most effective negotiation strategies for the customers to consistently using condoms. The study was conducted by using a survey cross-sectional of sex workers directly with the sample of 100 peoples, which who selected by a random cluster sampling in Denpasar city. The data collected by interviews conducted by using a questionnaire about the characteristics and modification Condom Influence Strategy Questionnaire (CISQ) developed by Noar. The results of the study show that about 63% of customers consistently used condoms in the past week. The effective negotiation strategies used so that customers consistently using condoms is deceptive by sex workers to their client's variables associated with consistent condom use is the availability of condoms and sex worker's age. Deceptive is the most effective strategy to increase consistent condom use.Keywords— Negotiations Condoms, Female Sex Workers, Consistency of Condom Use
DEVELOPMENT OF NUMERICAL PLATFORM FOR AIRCRAFT SYSTEMS SIMULATION Sasongko, Rianto A; Ndaomanu, Yorgi A.; Jenie, Yazdi I.; Nurhakin, M. Luthfi I.; Hadytama, M. Rafi; Asalani, Yusuf K
International Series on Interdisciplinary Science and Technology Vol. 2 No. 2 (2017)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v2i2.89

Abstract

This paper discusses the development of a numerical simulation platform that can be used for representing the principal works of aircraft systems. The platform consists of some parts each of which is intended to replicate the operation of a system implemented in a modern aircraft, such as hydraulic line, electrical system, landing gear system, control system, etc. The platform is intended to be a tool for modeling and analyzing the operation and performance of certain systems configuration. To some extend the platform can be viewed as a virtual Iron Bird System. Iron Bird is a term representing a platform for simulating the works of aircraft systems using real components, which is very important for aircraft system development. At this stage, the numerical platform will only involve some sub-systems, namely main hydraulic line, control surface actuation, landing gear, and control system. These sub-systems are chosen to be the basis for further development where other sub-systems will be added and integrated to the platform.Keywords—Aircraft System, Numerical Simulation, System Analysis
Design of Inward-Turning External Compression Supersonic Inlet for Supersonic Transport Aircraft Utomo, Muhammad Adnan; Bura, Romie Oktavianus
International Series on Interdisciplinary Science and Technology Vol. 2 No. 2 (2017)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v2i2.90

Abstract

Inward-turning external compression intake is one of the hybrid intakes that employs both external and internal compression intakes principle. This intake is commonly developed for hypersonic flight due to its efficiency and utilizing fewer shockwaves that generate heat. Since this intake employ less shockwaves, this design can be applied for low supersonic (Mach 1.4 - 2.5) intakes to reduce noise generated from the shockwaves while maintaining the efficiency. Other than developing the design method, a tool is written in MATLAB language to generate the intake shape automatically based on the desired design requirement. To investigate the intake design tool code and the performance of the generated intake shape, some CFD simulation were performed. The intake design tool code can be validated by comparing the shockwave location and the air properties in every intake's stations. The performance parameters that being observed are the intake efficiency, flow distortion level at the engine face, and the noise level generated by the shockwaves. The design tool written in MATLAB is working as intended. Two dimensional axisymmetric CFD simulations validation has been done and the design meets the minimum requirement. As for the 3D inlet geometry, with a little modification on diffuser and equipping vent to release the buildup pressure, the inlet has been successfully met the military standard on inlet performance (MIL-E-5007D). This design method also has feature to fit every possible throat cross sectional shapes and has been proven to work as designed.Keywords— Inward-turning, Supersonic, Engine Intakes, Low- noise, Design Method
Development of Optimization Methodology for Short Range Air-to-Air Missile Bura, Romie Oktovianus; Utama, Yudki; Farraz, Muhammad
International Series on Interdisciplinary Science and Technology Vol. 3 No. 1 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v3i1.111

Abstract

This paper illustrates the development and the use of conceptual sizing tools integrated with optimization tools. The conceptual sizing tool is based on empirical and simple analytical calculation that simple and robust enough for wide range of inputs. The genetic algorithm optimization method then used to explore the global optimum for given variables. System response analysis is conducted to gain insight about the sensitivity of objective function because of design variables.
Voltage Profile Improvement through Load Shedding Action Using Linear Programming-based Optimal Power Flow Hakim, Lukmanul; Nafisah, Annisa Zauhar; Gusmedi, Heri; Khairudin, Khairudin
International Series on Interdisciplinary Science and Technology Vol. 3 No. 1 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v3i1.115

Abstract

This paper proposes a load shedding scheme to improve voltage profile of a power system. A linear programming approach to optimal power flow is utilized to obtain optimum amount of load to shed in order to bring power system to an acceptable operating region. In this work, ±5% voltage variation is considered to be acceptable and hence, an immediate control action should be taken if power system is operated beyond this limit. The proposed method was tested on the IEEE 57-bus test system. Results showed that the proposed approach was able to provide a minimum amount of load shedding action to improve voltage profile of the studied power system.
Synthesis and Characterizations of Hydroxyapatite from Bovine Bone Using Alkaline Hydrolysis Method Aisah, Nuning; Harahap, Muslim Efendi; Budianto, Dwi; Wibowo, Mirza; Effendi, Mohammad Dachyar; Setiawan, Jan; Roseno, Seto; Gustiono, Dwi
International Series on Interdisciplinary Science and Technology Vol. 3 No. 1 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v3i1.124

Abstract

In this research, the synthesis of hydroxyapatite compound (HAp) has been done by extracting technique from cow cortex thigh bones to eliminate organic compounds contained in bone so that it can be used as raw material of bone graft. The method used is alkaline hydrolysis method of soaking bone in NaOH solution with variation of concentration (1M, 2M, 3M) and immersion time (30 minutes, 60 minutes, 90 minutes). The extracted HAp powder was then analyzed using FTIR, XRD and SEM. The results showed that a hydroxyapatite powder with a soaking time of 30 minutes and a 2M and 3M NaOH concentration did not contain organic elements. The XRD peak pattern shows the phase formed is a hydroxyapatite with a hexagonal structure having an average crystal size of 10-12 nm.
Implementation of Augmented Reality as Information and Promotion Media on Dieng Tourism Area Affan, Banu Nur; Suryanto, Agus; Arfriandi, Arief
International Series on Interdisciplinary Science and Technology Vol. 3 No. 1 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v3i1.128

Abstract

Information becomes necessary for tourists to get and improve the knowledge of tourism and their experiences about tourist destination. In Dieng tourism area, tourist information and promotional media has not been structured, as well as the need of media. The purpose of this research is produce Augmented Reality application that can visualize information of Dieng tourism, as interactive and interesting information, promotion tourism media. This research produces an android application which is used as information and promotion media of tourism in Dieng. Testing according to ISO 25010 with functional suitability got 100% suitability with Blackbox test, on portability aspect application successfully installed, update and uninstall on various smartphone environment, on performance efficiency aspect show average launch time is 1817 ms and also 0,22% CPU and 177,8 MB Memory usage. Results usability obtained SUS score 79.6 indicates the application get acceptable category to be used as information and tourism promotion media in Dieng.
Anaerobic Wastewater Treatments: Prediction of Retention Time on RT/RW Plant Sari, Dessy Agustina; Sukanta, Sukanta; Hakiim, Azafilmi
International Series on Interdisciplinary Science and Technology Vol. 3 No. 1 (2018)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v3i1.134

Abstract

Wastewater treatment gave major problem in higher of chemical oxygen demand that backgrounded by amount and type of PT RT/RW products. The waste was polymer, mixture of nitrogen, mixture of phosphate, and oil. This factory used active sludge and microorganism (anaerobic condition). Research result showed that pH ranged 4,94 until 8,02. This data gave a decreasing sharply in acidic condition. The thing could be caused acetogenic phase in area pond anaerobic. The phenomenon might be recited because possibility of biologist living this waste did not take place as well and or could give deathly affect to the anaerobic bacteria. Customary pH for the bacteria was 6,8 – 7,4. Temperature data reached 28-33oC so their activities were good. Then, efficiency of anaerobic wastewater treatment was 62,95 to 66,06%. The data indicated that the research was not accordance with SOP companies. Inlet concentration of chemical oxygen demand had variation and gave unbalancing affect to digestive bacteria load. Estimation to get valid COD was 11-14 days. The duration was required by the microorganism to digest the matter organic perfectly to be methane and carbon dioxide gas.

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