Indonesia Conference Directory

Corresponding Author
Muhammad Hafizia Ramadhan

Institutions
Industrial Engineering Department
Faculty of Industrial Technology
Islamic University of Indonesia Yogyakarta Indonesia

Abstract
Website constitutes a pivotal element in an academic institution. It is useful to provide academic information for stakeholder requires like final scores, academic calendar, scholarship, student competition, etc. This paper presents an investigation about the level of usability of the website at the selected faculty of the university in Indonesia on basis 5 dimensions. They are learnability, efficiency, memorability, error, and satisfaction. It is noteworthy for faculty should supply the information in detail and accurately but few of a faculty website in the certain university sometimes experiencing matters for the user. Thus, it is crucial to do the analysis of the usability of the website at the faculty level. A qualitative study was conducted by distributing some Likert-scale¬ questionnaire to stakeholders that consist of student, academic staff, student-s parents, and lecturer. The questionnaire contains 25 questions divided into five groups of elements by referring five dimensions above which each group has 5 questions or statements. The non-parametric statistic is conducted to test the hypothesis. The result of this study shows that the website of the selected faculty is classified into a moderate level with 68% of usability grade. Thus, this study recommends to improve the website in the layout of menu, content, add some features to easier for login so as it will become a higher usability level.

Keywords
website, usability, layout of menu, content of web, features.

Topic
Industrial Engineering

Link: https://ifory.id/abstract/LeT7pwW3HARE

Corresponding Author
Mikhail Vyacheslavovich Dolgopolov

Institutions
TP A&ST Ltd.

Abstract
It is offered to attention two technologies of use in oil and gas production and service works on capital repairs and cutting of a borehole: technology using plasma pulse intensification of oil production (PIIN), providing at a higher level of oil production. As a result of the impact of nitrogen flow with a range of pulse frequencies from units to tens of Hertz, having a pressure of several dozen atmospheres and a temperature above 500 ° C, there is an increase in temperature and pressure, which provides gas-dynamic processing of the bottom-hole zone, as well as wave effects on the oilplast. technology that generates dense plasma flows of a given power, as a method of plasma pulse cutting based on an electronically controlled plasma generator (EGP). For use in major repairs and cutting of borehole, cutting of various types of tubing (tubing), flexible tubing, casing and drill pipes, under any drilling conditions.

Keywords
plasma technologies, oil and gas production, service, plasma pulse intensification, plasma pulse cutting

Topic
Electrical Engineering

Link: https://ifory.id/abstract/tCBTpGVUgQdb

Corresponding Author
Phatraporn Chain

Institutions
a,b) Supply Chain and Logistics System Research Unit, Department of Industrial Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand

Abstract
Nowadays, the number of cattle farms have been increasing and spreading over the production regions. The aim of this paper is to find the appropriate locations of regional food distribution center in the northeastern of Thailand for distributing food to cattle farms. The case study was based on data from 421 standard cattle farms from all over northeastern of Thailand. Hierarchical agglomerative clustering which is a statistical technique for sorting dataset into homogeneous groups was applied to compute a range of possible clusters. After that, centroid method was used to find the location of food distribution center. The result showed that two food distribution centers are suitable for distribution of food to the cattle farms.

Keywords
Hierarchical agglomerative cluster analysis, cattle farm, distribution center, Location Decision Problem

Topic
Industrial Engineering

Link: https://ifory.id/abstract/M6X2mDxKQdgT

Corresponding Author
Muhammad Haekal Habibie

Institutions
Pusat Riset dan Pengembangan SDM - Badan Standardisasi Nasional

Abstract
Conformity assessment is a process commonly used in calibration activities to ensure the validity of the results of measurements or calibrations with specific requirements or standards. In this research the use of conformity assessment was carried out on long gauge block calibration activities in National Metrology Institute of Indonesia by determining objective criteria called decision rule which aims to determine the limit of conformity assessment, conformance zone, and specification zone requested by the calibration customer. Decision rules are made by referred in statistical acceptance sampling based on go/no-go decisions with Gaussian Probability Density Function for the measured quantity. From this research, it was found that in the calibration process of long gauge block, the use of the decision rule concept was to use tolerance interval with a guard band. The guard band value is obtained from the uncertainty measurement analysis of the long gauge block calibration, while the acceptance zone value is obtained from the limit deviation of long gauge block based on ISO 3650.

Keywords
decision rule, conformity assessment, long gauge block, calibration, statistic

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/KZxJ8Br3NR2b

Corresponding Author
Enden Mina

Institutions
Sultan Ageng Tirtayasa University

Abstract
The condition of road access as a means of transportation needs to be considered because it affect the smoothness of vehicles passing over it. Road construction is not always on a good subgrade, there is possibility of being built on subgrade which has a low soil bearing capacity. If subgrade soil had low bearing capacity, the pavement will suffer damage such as holes and bumps. One of the parameters to find out the soil bearing capacity (soil strength)for subgrade is by Californian Bearing Ratio testing. Soil stabilization is one of some treatments to improve bearing capacity of soil through adding one or more material admixtures to the soil. This study aims to determine the effect of steel slag and fly ash admixture to the soil bearing capacity parameters such CBR value and its effect on soil physical properties. Soil samples are taken from location of Kadusentar Village Road Medong Village Mekarjaya Subdistrict Pandeglang District. The classification of soil using Unified Soil Classification System (USCS). The methode of stabilization of soil using variation of prosentase admixture 20% of fly ash and mixed with steel slag 0%, 10%, 20% and 30% from total weight of soil. Those samples are preservated for 0 day, 3 days, and 7 days then tested using CBR laboratory test apparatus. Based on the USCS, the classification of original soil sample in the area of study can be included as MH group, a non-organic clay soil with high plasticiy where its plasticity index value were 24,59%. The CBR laboratory test result showed that for variation of 20% fly ash and 20% steel slag with 7 days preservated give the optimum value of CBR increases from 3,524% to 26.14%. the highest CBR value of this mixture can be categorized as good classification. Plasticity index value decreased became 4.57 % which it can be categorized as low plasticity. Based on those results above it can be concluded that the addition of admixture combination of fly ash and steel slag can increase the CBR value and decrease the plasticity index value which is good for soil stabilization.

Keywords
Stabilization, Fly Ash, Steel Slag, CBR.

Topic
Civil Engineering

Link: https://ifory.id/abstract/bBfMEnQc9J7D

Corresponding Author
Dwi Riana Aryani

Institutions
Universitas Indonesia

Abstract
A disturbance in the power system can lead to a voltage instability in the system. Voltage instability in the system causes the system to operate abnormally leading to voltage collapse or total blackout in the entire system. This paper discusses voltage stability to anticipate disturbance with Static VAR Compensator (SVC) using transient simulation in ETAP 12.6.0 software. Load shedding scheme by using voltage relay is analyze when a massive generator disturbance occurs. Load shedding scheme is relayed to revert and stabilize the system voltage. The scheme will trip some of the high priority load from the system. 15 MVA or 12,32% of the whole load will be saved to prevent the load from tripping used SVC with 30 MVAR ratings. Based on the analysis, SVC can be used to minimize load shedding for power system disturbance anticipation.

Keywords
power system, voltage stability, transient simulation, load shedding, Static VAR Compensator

Topic
Electrical Engineering

Link: https://ifory.id/abstract/bDc64LNFEVuX

Corresponding Author
Dhena Ria Barleany

Institutions
a) Chemical Engineering Department, Faculty of Engineering, University of Sultan Ageng Tirtayasa, Jln. Jenderal Sudirman Km. 03, Cilegon 42435, Banten, Indonesia
*ria.barleany[at]untirta.ac.id
b) Centre for Application of Isotopes and Radiation, Jakarta, Indonesia

Abstract
Uncontrolled hemorrhage is the leading cause of death. The efficient hemostatic dressings are needed to promote coagulation and hold ongoing hemorrhage. Hydrogels are hydrophilic polymers with three-dimensional network structures with high swelling capacity to prevent accumulation of exudates. Hydrogels prepared from polyvinyl alcohol (PVA) grafted with chitosan have attracted considerable attentions due to their biocompatibility, high moisture balance property, and transparency. This study utilized alginate to improve elasticity and thermal stability, also enhance hydrophilicity and increase swelling ability. The hydrogels composed of PVA (7.5 % w/v), chitosan (0.05 % w/v), and alginate (0.2, 0.4, and 0.6 % w/v) were synthesize by gamma irradiation technique at total dose of 15 kGy. The results showed that the increasing of alginate concentration in the total reactant mixture can improve elasticity, swelling capacity and the equilibrium degree of swelling (EDS), and decrease water vapour transmitted rate/moisture vapour transmitted rate (MVTR). The hydrogel wound dressing with 0.6 % of alginate concentration was the best product in this study with 79.49 % gel content, 608.65 % swelling ratio, 628.32 % EDS in 22 hours, elasticity 62,58 KPa, evaporation rate (MVTR) 105g/m2h, degraded at temperature of 298.89oC, and the weight loss was reached 88.84 % (w/w).

Keywords
alginate, chitosan, gamma irradiation, hydrogel, wound dressing

Topic
Chemical Engineering

Link: https://ifory.id/abstract/VwbPEjCKvt94

Corresponding Author
Ade Irman

Institutions
a) Industrial Engineering, University of Sultan Ageng Tirtayasa, Indonesia
*irman[at]untirta.ac.id
b) Mechanical Engineering, University of Sultan Ageng Tirtayasa, Indonesia
**dhimas[at]untirta.ac.id
c) Industrial Engineering, University of Sultan Ageng Tirtayasa, Indonesia
***nustin_md[at]untirta.ac.id
d) Industrial Engineering, University of Sultan Ageng Tirtayasa, Indonesia
****arliannur[at]gmail.com
e) Industrial Engineering, University of Sultan Ageng Tirtayasa, Indonesia
*****taniaero.te[at]gmail.com

Abstract
Traffic jam is an everyday problem which appear in almost of big city in the world. The cities without integrated public transport will have more problem in their daily traffic transportation, such as heavy traffic jam, high air pollution, etc. Serang City as the capital city of Banten-Indonesia has the same traffic problem, without a good integrated public transport, makes the problem of traffic transportation in Serang City becomes heavier. Virtual traffic simulation is known as powerful tool for generating alternative solution to minimize the traffic problems. This research use PTV Vissim as virtual traffic simulation software to minimize the traffic problems in Serang City. Serang City has 6 (six) sub-district area, there are Cipocok, Curug, Kasemen, Serang, Taktakan, and Walantaka. This research focus on vehicles traffic only in area of sub-district Serang with 5 main traffic lights crossroad. PTV Vissim uses to simulate the 5 of the main crossroads and find the average of the existing vehicles queue length in rush hour (morning and afternoon time). Trial and error operations such as traffic lights timing modification and routing modification use to generate alternative solutions for minimizing vehicles queue length as traffic performance in this research. The result of this research has found the rush hour in Serang City occured at 06.00-10.00 and 14.01-18.00 (UTC +07:00), and the routing modification in Kebon Jahe can reduce the average of queue length for 53%.

Keywords
Virtual Traffic Simulation;PTV Vissim; Indonesian City

Topic
Industrial Engineering

Link: https://ifory.id/abstract/YGeWTcjx8gUp

Corresponding Author
Faiz Husnayain

Institutions
(a) Department of Electrical Engineering, Faculty of Engineering, Universitas Indonesia

(b) Pusat Pengaturan Beban (P2B) PT PLN Persero Gandul

Abstract
A Flexible AC Transmission System (FACTS) device which is Static Synchronous Compensator (STATCOM) is commonly use to overcome voltage instability issue. However, the implementation of the STATCOM may cause a voltage increasement within the allowable limits in all areas and maintain the voltage stability of interconnected system. Therefore, this paper proposes an optimum placement of STATCOM to maintain the voltage profile of 150 kV subsystem during the loss of the transmission lines. The proposed methodology is verified by using a 150 kV interconnected system where the loss of two 150 kV transmission lines may lead to a voltage instability in the entire interconnected subsystem. The results show that the proposed method can maintain the voltage stability in the subsystem within the allowable limits in all period.

Keywords
Brute force method; FACTS; STATCOM; voltage stability

Topic
Electrical Engineering

Link: https://ifory.id/abstract/Gan9HNrJM8gc

Corresponding Author
Renanto Pandu Wirawan

Institutions
Department of Industrial Engineering, Universitas Indonesia, Depok, 16424, Indonesia

Abstract
Indonesia is one of the biggest plastic waste production in the world. The government targets to reach 20% for recycling plastic waste in 2019. One alternative to manage plastic waste is using pyrolysis to produce fuel. Pyrolysis is used to degrade the plastic long chain of polymer molecules into smaller molecules. All type of plastic except polyvinyl chloride (PVC) were used in this study to produce fuel. For the purpose, experiment factorial design was used for the optimisation plastic type, residence time, and temperature to maximise the yield of liquid products of the pyrolysis process. In this study 2k factorial design was used for each factor. The result shows that the pyrolysis process used is able to produce diesel like fuel in low temperature.

Keywords
Pyrolysis; Plastic waste; Fuel; Design of Experiment; Factorial Design

Topic
Industrial Engineering

Link: https://ifory.id/abstract/TqM6mRVfvB4u