Indonesia Conference Directory

Corresponding Author
muhammad arfa

Institutions
Postgraduate Student in Physical Education
Medan State University

Abstract
These researches will be carried out in Medan State Middle School 14. This research is planned to be held in the Academic Year 2019/2020. The stages of this study included collecting sociometric data, implementing cooperative learning treatments, and collecting data on the results of learning lower passing in volleyball games. The implementation of cooperative learning (cooperative type STAD and cooperative type jigsaw). The time for applying cooperative learning treatment (cooperative STAD type and cooperative type jigsaw) was carried out for 4 weeks. With the time of the study as many as 4 meetings. The research sample was taken by cluster random sampling. The results of the study are: 1) There are differences in the results of learning under-passing in volleyball between STAD type cooperatives and jigsaw cooperative types. 2) There is interaction between cooperative learning and sociometric on the results of learning to pass under in volleyball games. 3) The results of learning lower passing in student volleyball games with high sociometric taught by using the STAD cooperative type are better than cooperative jigsaw types. 4) The results of learning lower passing in volleyball games with low Sociometric students taught using cooperative type jigsaw are better than cooperative type STAD.

Keywords
STAD, JIGSAW, SOCIOMETRIC

Topic
Teachers Education Model in Future

Link: https://ifory.id/abstract/WXde8E2ZTDua

Corresponding Author
pangihutan butarbutar

Institutions
Postgraduate Students in Physical Education Medan State University

Abstract
The purpose of this study was to determine the interaction between the learning model and the confidence of students in class VIII SMP. This research was conducted on class VIII junior high school students. then the location of the research were taken at Bandar Setia Ujung Junior High School, Jl.Pengabdian No.75 Bandar Setia, Percut Sei Tuan Subdistrict, Deli Serdang Regency, with a sample of 30 students. This study used a purposive sample treatment by level 2 x 2. Data collection techniques in this study used portfolio sheets to test the learning outcomes of orthodox bullet-throw throws and questionnaires to measure student learning confidence. Data analysis techniques used two-way analysis of variance (ANAVA) and then proceed with the homogeneity test. The results of this study are (1) There is a difference between the snowball throwing learning model and the self-check learning model because F0 (A) = 1621.69> Ftab = 4.11 then H0 is rejected, the conclusion (1) there are differences in learning outcomes orthodox style between students who are treated by using the snowball throwing learning model and students who are treated using self-examination learning models, against the results of the bullet-drop learning in orthodox style material, (2) There is no interaction between the snowball throwing learning model and the check-learning model self because the calculated price Fo interaction = 0.02 and F table = 4.05 shows that the Fo

Keywords
Learning Model, Self Confidence, Bullet Resist Learning Outcomes

Topic
Teachers Education Model in Future

Link: https://ifory.id/abstract/W7uNCVRTEhwX

Corresponding Author
Janri Mahasan Sihotang

Institutions
Postgraduate Students in Physical Education Medan State University

Abstract
The purpose of this study to produce a product in the form of a game module containing Ludo games with text-based media for elementary school children, so that it can complement the existing learning at this time. This research was conducted in several Private Primary Schools in Medan Johor Subdistrict, with a number of small groups in this study were second grade students at W.R. Supratman 2 and Sriwijaya with 12 students who have the characteristics of the age range of 8-9 years. The subjects in the large group in this study were W.R. Supratman Primary School Medan with the number of students in each school totaling 24 students. This study used the Research & Development (R & D) development model. The final result of this development research is to produce a product in the form of a game module that contains ludo games with text-based media for elementary school children. In conclusion, this development research can complement existing learning, so that students can be more effective in learning, meaning completeness in increasing effectiveness or convenience for students in mastering the basic locomotor material, efficiency, meaning the completeness of learning assistance, where with minimal cost and time so that maximum results can be obtained in mastering locomotor basic material, interesting, meaning it is a completeness of learning that has an attraction so students can be motivated to use it.

Keywords
R & D Development, Locomotor Base Motion, Ludo Games

Topic
Curriculum, Research and Development

Link: https://ifory.id/abstract/X2rAHVdtR9CF

Corresponding Author
eva saulina tamba

Institutions
Postgraduate Students in physical Education Medan State University

Abstract
Research and development of super Jabber games are applied to the interest in learning in kindergarten children, specifically there are several objectives, among others 1) To obtain in-depth information about the process of implementing basic motion learning in kindergarten. 2) Develop and apply super jabber games to the learning interests of kindergarten students. 3) Obtaining empirical data about effectiveness, efficiency and attractiveness of the development of super jabber games in learning motion. The ultimate goal of this development research is to produce a product in the form of a game module that contains super jabber games with text-based media for kindergarten children, so as to complement the existing learning at this time. This research was conducted in several kindergartens in the city of Medan. The research treatment is carried out by adjusting the schedule or school hours. The time of this research was carried out for one month, namely when the proposal seminar was finished. Subjects or users who were targeted in the research development of super jabber games towards interest in learning in kindergarten children. Subjects in the small group in this study were TK Ar Raudah students with a total of 12 students who had a characteristic age range of 4-5 years. Subjects in the large group in this study were at Raudhatul Atfal Kindergarten with a total of 24 students.

Keywords
Super Jabber, Games, Kindergarten children.

Topic
Curriculum, Research and Development

Link: https://ifory.id/abstract/v2qXudeUrwbK

Corresponding Author
muhammad aditya prawira

Institutions
Postgraduate Students in Physical Education Medan State University

Abstract
In the research development of basic futsal passing techniques for athletes in the private junior high school extracurricular club in the city of Medan. This is a process used to develop and validate learning products. Research and development in this study used a development model for the subject of needs analysis in small groups of PahlawaNasional Junior High School of 10 athletes. Phase I trials, the subject of the trial was 20 people from the 57 Muhammadiyah Junior High School athletes in Medan. The purpose of this study: 1) Effective, meaning is completeness in increasing effectiveness or convenience for athletes in mastering training material. 2) Efficiency, meaning the completeness of learning assistance, where with minimal costs and time so that maximum results can be obtained in mastering basic passing techniques. 3) Interesting, meaning that it is a complete exercise that has an attraction so that athletes can be motivated to use it.

Keywords
Development, Futsal, Passing.

Topic
Curriculum, Research and Development

Link: https://ifory.id/abstract/wV8WhHpEGkaJ

Corresponding Author
Paradita Kumala Lemmy

Institutions
UNIMED

Abstract
The purpose of this study is to find out whether there is a significant relationship between: (1) achievement of social development in childhood who have single parents, (2) how is the social behavior of children who have single parents, (3) how childrens social behavior who is cared for by a single mother, (4) how is the social behavior of a child cared for by a single father. This study was an analytic observational study with a cross sectional design. The population of this study was all early childhood education in 3 kindergarten schools in Medan City. The research method used in this study is a qualitative analytical descriptive method. The sampling technique used is Area sampling. Data collection techniques for social development using questionnaires, interviews, documentation and observation. The data analysis technique uses 3 techniques, namely data reduction, data presentation and conclusion drawing. Based on the results of the data analysis and the discussion carried out obtained: (1) There is a difference between the social development of children with single parents and complete parents where children with single parents tend to have unstable emotions. They are easier to cry when disturbed by their friends for those who are cared for by a single mother, for those who are cared for by a single father, they tend to be angry, rebellious and hit when they are disturbed by their friends; (2) engagement parenting conducted in independent and not involved to the other; (3) accessibility is a single parent, father always give time to accompany for playing and activities his child everyday.

Keywords
Social Development, Childhood, Single Parents

Topic
Curriculum, Research and Development

Link: https://ifory.id/abstract/GkAj3BuqcaeC

Corresponding Author
Laurens Kaluge

Institutions
(1) Universitas Kanjuruhan Malang, Jawa Timur, Indonesia.
*laurens[at]unikama.ac.id
(2) STFT Widya Sasana Malang, Jawa Timur, Indonesia

Abstract
The purpose of this study was to explore some selected constructs as explanatory factors for improving instructional activities at Junior Secondary Schools (JSS). Teachers from 34 JSS at four provinces in Central Indonesia provided data by filling out questionnaires. The modeling of regression analysis affirmed that training benefits, remedial teaching, teaching evaluation, and school climate were effective independent factors. However, the teacher professionalism, teaching plan, and classroom climate were not significant. Motivation for doing remedial teaching had the highest 12.1% contribution for the successful active instruction. The study attempted to enhance quality assurance of the teaching practices at schools in Indonesia.

Keywords
teacher professionalism, instructional effectiveness, school climate, junior secondary school

Topic
Other Areas of Education

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

Corresponding Author
ARINI HERDAYANTI

Institutions
Department of Physics Education, State University of Medan
Jl. Willem Iskandar / Pasar V, Medan 20221, Indonesia
*arini.herdayanti[at]yahoo.com

Abstract
This development research aims to produce learning media in the form of physical props on the dynamic fluid material that is feasible, effective and practical for use in the learning process. The research method used refers to the development research of ADDIE consisting of five phases; Analysis, design, development, implementation, and evaluation. The population of the research is the entire student of XI-SMA private Nurul Amaliyah; The sample that is researched by Nurul Amaliyah Private High School is taken by two classes, each class consists of 28 students. The test instrument used is a test instrument which is a validated description test and a non-test instrument consisting of preliminary research poll sheets and interviews, teacher and student response polls.

Keywords
Research Development, ADDIE, Learning Media, Dynamic Fluid Props, Fluid Dynamic, Feasible, Effective And Practical.

Topic
Education and Research Global Issue

Link: https://ifory.id/abstract/eMzHN7Rkd8Uv

Corresponding Author
RATU YUSTIKA RINI RATU

Institutions
Early Childhood Education, Universitas Pendidikan Indonesia

Abstract
This research is motivated by the claim that children must be able to "calistung" (read, write, count) in PAUD institutions. Jarimatika is a tool or media for children to explore with the fingers of their hands. Jarimatika techniques emphasize the mastery of the concept of numbers and fast ways to count. The focus of this research is to analyze mathematics learning to introduce initial arithmetic through fingerprinting techniques, including planning, implementation, and the ability profile that is apparent from children. The approach used is a qualitative approach with a case study method. The results of this study indicate that the planning of mathematics learning through Jarimatika technique has three components, namely the first component of mathematics learning planning to introduce the initial arithmetic in TK Ulil Albab, Serang City; prepared together with school principals, teachers and education personnel, designed in an integrated manner with the Standards for the Achievement of Child Development; the second implementation of mathematics learning is packed with Jarimatika Technique. Therefore, in the introduction of preliminary arithmetic through the fingerprinting technique is continued and used as a recommendation and reference for schools in the development of early arithmetic in early childhood.

Keywords
counting beginning, jarimatika, mathematics

Topic
Learning / Teaching Methodologies and Assessment

Link: https://ifory.id/abstract/V9fFYcAuqvP8

Corresponding Author
Yuyun Elizabeth Patras

Institutions
Universitas Pakuan

Abstract
Organizational Citizenship Behavior (OCB) is an important behavior possessed by teachers. This research aims to describe the variables that influence teacher OCB, including organizational justice and job satisfaction. This study was conducted using a sequential explanatory method. The population and sample of this research were Islamic school teachers in Tenjolaya District, Bogor, West Java. The findings are: 1) There is a significant positive relationship between organizational justice and OCB with correlation coefficient (ry1) of 0.505; 2) There is a significant positive relationship between job satisfaction and OCB with correlation coefficient (ry2) of 0.437: and 3) There is a positive relationship with a significant relationship between organizational justice and job satisfaction with OCB with correlation coefficient (ry12) of 0.572. Based on Focus Group Discussion there are other factors that influence or relate to an increase in OCB including: a). transformational leadership, b). organizational commitment, c). organizational culture, d). teacher motivation.

Keywords
Organizational Justice, Job Satisfaction and Organizational Citizenship Behavior

Topic
Educational Foundations

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

Corresponding Author
Sayid Sagap

Institutions
UIN Sulthan Thaha Saifuddin Jambi

Abstract
One of transmission vehicle in religious thought among Islamic student organizations activists was cadre education and inter-forum discussions between fellow activists. Anxiety in the occurrence of a deviant religious understanding among youth is made possible by the increasing demographic of young people which accompanied by the transformation and transmission of radicalism movements, open political structures, and the narrow of job opportunities. This paper aims to examine the religious thought and activism of Islamic student organizations activists through cadre education, courses and debates on contextual religious situations in Indonesia, and in Jambi where this research was specifically conducted on activists of three Islamic student organizations, PMII, HMI and KAMMI. The results of the study so far show religious moderation among activists. They differ in thought and opinion, both with among activists from the same organization, as well as with other activists outside the organization, in looking at Indonesias current socio-religious situation.

Keywords
religious moderation education; Islamic student activists

Topic
Global Issues in Education and Research

Link: https://ifory.id/abstract/WcqJVURLn8tK

Corresponding Author
Gamar Basuki

Institutions
Electronics Engineering Polytechnic Institute of Surabaya

Abstract
Induction motors are AC electric motors are the most widely used. Induction motor speed control can be done with some type of converter. However, not all types of converters can produce a great efficiency in terms of induction motor speed control. Matrix converter with venturini modultion may be a suitable option for the efficient speed control system with scalar control. Modulation switching of matrix converter was designed by Venturini. Therefore in this study MATLAB Simulink simulations to test the use modulation on matrix converter switching is Venturini method. Given this research is expected induction motor speed regulation can be more efficient in its application in the industrial world.

Keywords
Induction motor, matrix converter, Venturini modulation

Topic
Renewable Energy

Link: https://ifory.id/abstract/FCHumk64Bp2J

Corresponding Author
Tofan Agung Eka Prasetya

Institutions
1 Research Methodology, Departement of Mathematics and Computer Science, Faculty of Science and Technology, Prince of Songkla University, Pattani Campus, Muang, Pattani, 94000 THAILAND; E-Mails: tofank3[at]gmail.com (F.L.)
2 Health Departement, Vocational Faculty, Universitas Airlangga, Jl. Dharmawangsa Dalam Selatan No 68, Airlangga, Gubeng, Surabaya, East Java, INDONESIA
3 Statistic Departement, Faculty of Mathematics and Science, Syah Kuala University, Jl. Tgk Hasan Krueng Kalee, Kopelma Darussalam, Syiah Kuala Banda Aceh, Aceh 23111, INDONESIA

Abstract
Land Surface Temperature (LST) can be used as an indicator of measuring temperature change in the regions. The changing variation can be produced or affected by some factor such as elevation, land cover products, and Normalized Difference Vegetation Index (NDVI). This study aimed to investigate LST variation based on elevation, land cover products, and NDVI in the North Sumatra area, Indonesia. Land products satellite data between 2000 and 2018 were downloaded from Moderate Resolution Imaging Spectroradiometer (MODIS) website. Multiple linear regression was used to find the patterns of LST variation. The highest LST variation was found in Evergreen Broadedleaf (EB) forest and urban area with the average change 0.4 and 0.5 °C/decade and the lowest was found in water surface area with the average change more than -1 °C/decade. The overall mean of LST changing was -0.1 °C/decade with r-square 31.4%. There was unique LST variation in EB forest land cover when the elevation increased, the LST also increased from -0.4 to 0.5 0C/decade. The same condition also appears in Savannas and cropland/natural vegetation mosaic (Crop. Mos.). In conclusion, the changing of LST in North Sumatra was affected by elevation, land cover products, and NDVI.

Keywords
land surface temperature; elevation; land cover products; normalized difference vegetation index

Topic
Environmental Engineering

Link: https://ifory.id/abstract/Enqe43tpw2W7

Corresponding Author
Tia Rizka Nuzula Rachma

Institutions
Badan Informasi Geospasial
Jalan Raya Jakarta Bogor KM 46 Cibinong Kab Bogor 16912, Indonesia

Abstract
To become a global maritime axis, Indonesia needs to strengthen the security of its maritime region. Indonesia has adopted the Law of the Sea Convention (LOSC) to determine its water boundaries. One of the points in LOSC that has not been implemented in Indonesia is related to internal waters. Until now Indonesia has not yet determined the extent of its internal waters. This study aims to examine the potential of Tomini Bay as a historic bay, especially spatial terms, so that it will increase the area of Indonesias internal waters. The methods used were literature study of the cases in other countries, determination of the area, and extensive calculations using basic data on RBI maps, such as toponym data, and coastline data. Based on this research, Tomini Bay has an area of 56,948.51 km2, but according to LOSC it is not a juridical bay since the width of its opening is more than 24 nautical miles. Some small juridical bays in the Tomini region have an accumulative area of 418.49 km2, only about 0.73% of Tomini area. In order for Tomini Bay to meet the provisions of UNCLOS as a bay, Indonesia needs to define Tomini Bay as a "historic bay", because in this study it was found the defining potential. By recognizing Tomini as a historic bay, Indonesia can change the status of the waters inside it from archipelagic waters to internal waters, so that Indonesias authority over the region becomes stronger.

Keywords
Maritime boundaries; Internal Waters; Tomini bay; Historic Bay

Topic
Marine Resources, Conversation and ICZM

Link: https://ifory.id/abstract/fnRLr9pZQKzV

Corresponding Author
Deddy Kusbianto Purwokoaji

Institutions
Polinema

Abstract
The 4.0 Industrial Revolution in Indonesia has been impossible to avoid, and in the case of facing the 5.0 community emphasizing the Prime service of five-star equivalent, it is necessary and important to immediately implement the information system and Information technology to Indonesian people in general, as well as cooperative members of Citra Polinema in particular, so that TOP-DOWN-based government policies can be accelerated by matching them using the BOTTOM-UP approach. The general method of this research is the study of libraries, design and analysis systems as well as empirical research for functional testing and user testing to manifest "Effect of the implementation of E-cooperatives at the processing speed, ease of operation , and cost efficiency: A case study in Citra Polinema Cooperative". The output is declared reached when visitation is with the completion of the E-cooperative application that will be researched, the data of research results is utilized in accordance with the stipulated and expected to be a pilot project for cooperatives and SMES Related research.

Keywords
e-cooperative, the information system, Information technology, design and analysis systems

Topic
Information Systems Technology

Link: https://ifory.id/abstract/3Jvq7bTMfxBX

Corresponding Author
Yuri Ariyanto

Institutions
State Polytechnic Of Malang

Abstract
Virtualization server uses the hypervisor technology in its implementation. Hypervisor is one of the virtualization techniques. Where this technique runs several operating systems together in one host. Cloud computing is a combination of the use of internet-based computer technology. The Open source Proxmox VE (Virtual Environment) is a virtual machine operating system. Where virtual machines are built from the Debian Linux operating system, with the modified RHEL kernel. A firewall is a system designed to prevent attacks on the network. Firewalls can be software or hardware that filters network traffic. Proxmox VE Firewall provides a way to protect network infrastructure. In Proxmox VE firewall allows setting rules for all hosts in a cluster or for virtual machines. In this study, the performance of the firewall from the server virtualization using ProxmoxVE will be examined. This study is intended to determine the performance of the firewall default from Proxmox VE. Firewall testing is done by creating filtering rules in the Proxmox VE cloud server. The results of this study will provide an analysis of the performance of the Proxmox VE firewall that runs on cloud servers.

Keywords
Virtualization, Cloud Computing, ProxmoxVE, Firewall, Iptables

Topic
Information Systems Technology

Link: https://ifory.id/abstract/LPr49X3FGWnN

Corresponding Author
Amira Syazwani Mustafa Kamal

Institutions
1)Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia
2)Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia
*Email: texiqbal[at]uitm.edu.my

Abstract
Bacteria cellulose (BC) derived from Acetobacter xylinum strain possess several advantages such as elevated water holding capacity, high porosity and excellent mechanical strength. BC is useful to replace vegetal plant and applied into various industrial field such as papermaking, packaging and textile. In this study, BC membranes were produced from coconut water based consists of 8.0% sugar, 0.5% ammonium sulphate and 1.0% acetic acid at pH 4.5, followed with the addition of 10.0% inoculum before subjected to static incubation for 7 days. This study evaluated the changes of BC membrane properties using different concentration of sodium hydroxide (NaOH) under room temperature within 24 hours. The morphological, physical, chemical structure and water vapour permeability (WVP) of BC were analysed using FESEM, XRD, FTIR and WVP analysis, respectively. Results show that BC is mainly consist of cellulose I_α with high crystallinity and smaller crystallite sizes. The differences in NaOH concentrations varied the fibrils diameter of cellulose, in accordance to FESEM images. The use of higher concentration of NaOH (≥ 2.0%) gave a smooth cellulose structure with less porosity, thus reducing the WVP properties of BC.

Keywords
Acetobacter xylinum; bacterial cellulose; purification treatment; sodium hydroxide; water vapor permeability

Topic
Environmental Science and Engineering

Link: https://ifory.id/abstract/tPXcdFmrNk6n

Corresponding Author
kadek suarjuna

Institutions
politeknik negeri malang

Abstract
Currently there are still many customers with 900 Volt Ampere (VA) Power which is categorized as capable households (RTM). As the result, the electricity tariff that must be paid by 900 VA Power customers climb up to Rp 1,352.00 / Kilo Watt Hours (KWH). The proportion of electricity subsidies to central government spending is increase from 2.5% in 2005 to 4.7% in the 2012 according to State Budget. The average electricity subsidy spends around 7% of the central government budget. This condition shows that electricity subsidies are adequate to burden the central government budget. (Bureau of Budget Analysis and APBN-Sekjen RI-RI Implementation). Problems in PT PLN have uncertain impact on the subsidy budget and inefficiencies in PT PLN require comprehensive solutions. In implementing the electricity subsidy distribution program that is right on target and can help the performance of PT. PLN is on duty, so a new breakthrough is needed based on technological advances in the world, namely new data collection and re-data collection for consumers by bringing data that has been determined by PT PLN as supporting data. So that the consumer support data will be tested with a system has made to determine that the consumer deserves a subsidy or not. In order to find a solution on subsidies that are right on target, in its application can seek solutions to problem solving through the application of the Naive Bayes method. Based on the results of the research, an intelligent system is found to help determine consumers who get subsidized and non-subsidized electricity rates with the right target and this system can also increase accuracy in determining consumers with appropriate electricity subsidy rates for PT PLN admin.

Keywords
Keywords: Subsidies and Naive Bayes.

Topic
Information Systems Technology

Link: https://ifory.id/abstract/WD2zpxfAja3u

Corresponding Author
Rama Ardy Syahputra

Institutions
Telkom University
Bandung

Abstract
This study attempts to predict financial distress companies in the telecommunication sector in Asia Pacific in the period of 2014-2017. We are using financial distress companies as the dependent variable and financial ratios and macroeconomic variables as the independent variables. The purpose of this research is to identify predictors of corporate financial distress, using logit model analysis, in an emerging market over a period of economic turbulence and to reveal the comparative predictive and classification accuracies of the models in this different market. The research relies on a sample of 14 telecommunication companies from 14 countries, which cover a period of stagnant economic growth during 2014-2017. This study found that the independent variables that can be used to predict financial distress companies in telecommunication sector in Asia Pacific were financial risk, operating risk, liquidity, profitability and Gross Domestic Product.

Keywords
Financial Distress, Telecommunication, Asia Pacific

Topic
Financial Management

Link: https://ifory.id/abstract/aWFj7gmzvB4p

Corresponding Author
Rizki Aldino Ahmad

Institutions
faculty of mathematic and natural science, Universitas Indonesia

Abstract
Silver nanoparticles (AgNPs) have been synthesized using 1,2-propanediol as a reducing agent, and polyvinyl alcohol as a capping agent. In this present work, the effect of pH on the reduction rate and final product of AgNPs have been investigated. The particles were collected and characterized using an ultraviolet-visible spectrometer and a transmission electron microscope. The results show that the pH affects the reduction rate and morphology of the particles. The reduction rate of Ag atoms increases as the pH incrases which leads to the formation of bigger particles with irregular shape. Meanwhile, when the pH was decreased, the reduction rate of Ag atoms was found to decrease, resulting in the formation of smaller particles with more regular shape. The difference in reduction rate is ascribed due to the descrepancy of the equilibrium reaction for formation of Ag atoms.

Keywords
Silver Nanoparticles, 1,2-propanediol, reduction agent, capping agent

Topic
Nano Science and Technology

Link: https://ifory.id/abstract/qFMQzY8yDXne

Corresponding Author
Rachman Shaf

Institutions
a). Departement of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung,
Jalan Ganesa 10, Bandung 40132, Indonesia
b). Research Center for Bioscience and Biotechnology
Institut Teknologi Bandung
Jalan Ganesa 10, Bandung 40132, Indonesia

Abstract
Pure water flux holds an important key in determining the quality of a certain filter. The flux can be measured by pumping a number of volume fluid through some filter membrane over time. By using automation electrical control system, high accuracy sensor and over time sampling data, the error that occurred in manual data sampling will reduced, so the flux that occurred will be more accurate. This paper explains how the automation system using a controllable air regulator pressure pump with high precision pressure sensor, and high accuracy digital balance and the data received displayed in the Graphical User Interface (GUI) to get the flux of a filter membrane. The calibration process of the hardware that involves in this measurement gave good result with minimum or the lowest value of linear regression constanta is 1 for the bit digital balance number and mass number and 0.9998 for duty cycle read of the digital pressure and measured sensor calibrate pressure sensor. Also the accuracy number of the digital balance got by comparing the digital balance and calibrate scale, the highest number of error is 0.35% while the minimum value of mass number that could be recorded reached 0.003 gram. And for the flux measurement test on different type of filter membrane also shows that the different of membrane pore size affect the value of the flux and given increment of the pressure causes the value of flux increase.

Keywords
Filtration membrane; Pure Water Flux; Water Filtration

Topic
Synthesis and Characterization Techniques

Link: https://ifory.id/abstract/CaJWYHKtx7yG

Corresponding Author
Maya Andansari

Institutions
1Departement of Physics, Faculty of Sciences
Institute of Technology Sepuluh Nopember, Surabaya 60111 Indonesia
*suasm[at]its.ac.id

Abstract
In this study, the composition of (1-x-y)BaTiO3-xBiFeO3-yKVO3 (x = 0.15 ; y = 0.01 and 0.025) were successfully synthesized using a calcination at 700°C for 2 hours of mixed BaTiO3, KVO3 and BiFeO3. Previously, BaTiO3 (BT), KVO3 (KV), and BiFeO3 (BFO) powders were each synthesized through oxalate coprecipitation, solid state reaction, and sol-gel self-combustion method respectively. Phase identification was carried out through X-ray diffraction match software, and further refinement analysis using Rietica software. SEM/EDX analysis was completed for the microstructure characterization, while the impedance complex analysis are used to determine its electrical properties. XRD pattern clarify the absence of the secondary phase in both compositions after calcination, however after sintering the secondary phase Ba3V2O8 was detected. Furthermore, the substitution of 1 mol% and 2.5 mol% doped KV successfully reduce the sintering temperature become ≈1050°C from generally reported 1300⁰C-1400⁰C [1].

Keywords
Barium Titanat, Dielectric, Low Temperature Sintering

Topic
Synthesis and Characterization Techniques

Link: https://ifory.id/abstract/W4zxcY23eQvw

Corresponding Author
Erna Hastuti

Institutions
(1)Department of Physics, Universitas Islam Negeri Maulana Malik Ibrahim Malang
Jl. Gajayana 50 Malang, 65144, Indonesia
*erna[at]fis.uin-malang.ac.id

(2)Research Center for Physics, Indonesian Institute for Sciences (LIPI)
Komplek Puspitek Tangerang Selatan, Banten, 15314, Indonesia

Abstract
In this research, a carbonized chicken feather for anode materials was prepared using the pyrolysis method. While the activation process of carbon utilized KOH variations (1M, 3M, and 5M) which was pyrolyzed at 700 oC. In addition, the surface area, crystalline structures, and morphologies of the activated carbonized chicken feather (CFCAs) were investigated by the X-ray diffraction, BET, FTIR, and SEM. Furthermore, their various electrochemical properties in LIBs were also examined, with the chemical activation process decreasing the crystallite size. The activated carbon has a small reduction and oxidation peaks, which attributed to the insertion of Li-ion into the voids in carbon. The results show that activated carbon with KOH 5 M has the highest discharge rate capacity at 445.87 (mAhg-1).

Keywords
activated carbon, chicken feather, chemical activation, batteries, anode battery

Topic
Nano Science and Technology

Link: https://ifory.id/abstract/KeDc7vLCdkVQ

Corresponding Author
Winut Wongwan

Institutions
Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand

Physics program, Faculty of science and technology, Nakhon Pathom Rajabhat University, 73000, Thailand

Physics program, Faculty of science and technology, Thepsatri Rajabhat University, 15000, Thailand

Anuban Changwattahanbok Lopburi School, 15000, Thailand

Abstract
In this research, a small glass melting furnace was built with a dimension of 12 x 12 x 9 cm3. The tracking control and notification systems were developed using the Arduino board running through the internet. The 1.2-mm wires were twisted into the 8.3-mm heating coils with the resistance 12.0 Ω. When 11.0-A current was applied to the heating coil, the furnace can be operated at maximum heating rate around 5.7 ℃/min. and max continuous operating temperature at 1200 ℃. After the test run of this furnace and control system, it was found that this apparatus can be used as a replacement of a traditional one. Furthermore the cost of this furnace is cheaper than a traditional one up to 17 times.

Keywords
Melting furnace, Pot furnace, Temperature controller, Arduino

Topic
Physics related sciences

Link: https://ifory.id/abstract/yzkpt8hL2jAa

Corresponding Author
Perdinan Sinuhaji

Institutions
Universitas Sumatera Utara

Abstract
Abstract The purification of zinc oxide has been carried out from zinc dross waste by pyrometallurgy method. The amount of zinc dross waste was cleansed by using aqua DM liquid with ratio of 1:10, then this amount was characterized using XRF to determine chemical compounds contained within the 90% of zinc dross waste, while impurity compositions of Fe, Al, and Mg were found. Hence, the amount of zinc dross waste was mixed to carbonized coffee within two ratios, i.e. 87.5%wt: 12.5%wt, and 75%wt: 25%wt. The mixture samples were then dissolved by aqua DM, followed by milling treatment by performing Planetary Bill Mill for 40 minutes, so that the muddy-phase were obtained. This sample was then filtered and it was heated inside an oven at 100oC for 24 hours to powder. The mixture powder of zinc dross and carbon was then placed in pyrolysis vessel at 1200oC for 2.5 hours. The obtained amount of zinc oxide powder was characterized by using XRF, and this has 98% of purity with impurities element i.e Al2O3, Fe2O3, MgO, and SiO2. Thermal testing was performed for ZnO sample by using DT instrument to investigate the effect heating to the reaction events. The analysis of DTA showed that the mixture sample of zinc dross and carbon had reaction sequences at 800oC. The morphological analysis conducted by SEM and OM depicted that ZnO has agglomeration characteristics with uniformity shape among particles. The size of the particles is between 1,900 µm to 9,378 µm.

Keywords
: zinc oxide, zinc dross, carbonized coffee, pyrometallurgy, purification

Topic
Metal alloys, ceramics and composite materials

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

Corresponding Author
Nakarin Sinkiburin

Institutions
Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, 73000,Thailand

Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand

Industrial Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, 73000, Thailand

Abstract
In this paper, studied the refining effects of Sb2O3 and ultraviolet transmitting property of NaCaBSi glasses. These raw materials were weighted according to the (40-x)SiO2 :30B2O3 :20Na2O :10CaO :xSb2O3 where x=0.0, 0.05, 0.1, 0.5, 1.0 and 2.0 mol%. NaCaBSi glasses were obtained by using melt quenching technique and characterized by using density, refractive index, optical absorption spectra and the number of bubbles in glass measure as a function of different concentrations. The density (ρ), molar volume (VM) and refractive index obtained were found to increase with increases in the concentration of Sb2O3 in the glass matrix. The optical absorption spectra of glasses were measured in the wavelength of 200 – 1,100 nm. Number of bubbles in glass decrease when increasing Sb2O3 concentrations

Keywords
Sb2O3, NaCaBSi glasses, bubbles in glass, refining, molar volume

Topic
Optical, luminescence, Electronic Materials and applications

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

Corresponding Author
Nawarut Jarucha

Institutions
Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand

Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand

Abstract
The gadolinium tungsten borate glasses doped with Er3+ were prepared by melt quenching technique for study in physical, absorption and luminescence properties by composition (30-x) B2O3 - 27.5 Gd2O3 - 42.5 WO3 - x Er2O3, where x = 0.1, 0.5, 1.0 and 2.0 mol%. The results show that doping Er2O3 in high concentration make the glass density and molar volume tend to increase. The absorption spectra indicate the photon absorbing of Er3+ in visible light and near infrared region. The luminescence of an erbium doped glass were investigated at room temperature. In addition, mechanisms of the luminescence by multiphoton absorption and energy transfer processes are discussed based on the energy-level diagram of Er3+ and luminescence spectra. These results benefit for efficient short and conventional-length optical amplifiers and tunable lasers.

Keywords
Borate glass, Erbium, Luminescence

Topic
Optical, luminescence, Electronic Materials and applications

Link: https://ifory.id/abstract/hGtVm8BrNyA3

Corresponding Author
Nur Putri Hidayah

Institutions
University of Muhammadiyah Malang

Abstract
Customers who failed to make promises in bank financing have the potential to cause disputes. To solve this, there are already a series of regulations that govern. The problem is that there are still many customers who feel disadvantaged in the dispute resolution process. The purpose of this study was to find out how the procedure for resolving financing disputes with guaranteed mortgage rights at Bank Jatim as well as any obstacles in the dispute resolution process. This study uses empirical research methods with a regulatory approach. The results of the study show that the dispute resolution process in non-litigation has not been maximized and the tendency is to execute the object of collateral. While the constraints are in non-compliance with the process of fostering customers who are injured in the promise, and the auction process that takes a long time.

Keywords
Credit disputes; Dispute resolution: conventional banking

Topic
Private Law

Link: https://ifory.id/abstract/hVtp2WUeCPjm

Corresponding Author
Bunga Sukma Mefatisani

Institutions
ab Trilogi University, Jakarta and Indonesia
bungasukma01[at]gmail.com
cd Trilogi University, Jakarta and Indonesia
lelydahlia[at]trilogi.ac.id

Abstract
The study aims to explain the behavior of electronic money usage through the implementation of the Unified Theory of Acceptance and Use of Technology 2 (UTAUT 2) model that is collaborated with two other variables, including the factors examined Includes performance expectations, effort expectations, social influences, facilitation conditions, hedonist motivation, price value, habits, technological perception of security and the perception of Muslim society on electronic money transactions. UTAUT 2 is a model of acceptance and use of technology that combines the best features of several other technological acceptance theory models. This type of research is quantitative descriptive. Research is located in South Jakarta. Data is obtained using an online questionnaire with 176 respondents. Hypothesis testing was conducted using Structural Equation Model (SEM) with the Partial Least Square (PLS) application. The results of this study indicate that the application of the UTAUT 2 theory is positively influential in the behavior of electronic money usage, the security perception of technology doesn-t have a positively affects on the behavior of electronic money usage and the perception of Muslim society using electronic money has doesn-t have positive effect. Therefore, governments and electronic money-issuing parties need to consider the use of the UTAUT 2 theory model to be able to supervise and assess the product in the community, increased secutiry on electronic money servers is needed to increase community confidence, and the government is building partnership with electronic money publishers Syari-ah in order to minimize the concern of Muslim in using electronic money.

Keywords
Electronic money, UTAUT 2, technology security, Muslim perception, electronic money usage behaviour

Topic
Finance and Risk Management

Link: https://ifory.id/abstract/u7nUKCvPgXq4

Corresponding Author
Lely Trianti Anggarini

Institutions
a) School of Business and Management, Bandung Institute of Technology
Jl. Ganesha 10, Bandung 40132, Indonesia
*lely_trianti[at]sbm-itb.ac.id

b) National Center of Sustainable Transportation Technology, Bandung Institute of Technology
Jl. Ganesha 10, Bandung 40132, Indonesia

Abstract
This research aims to comprehend how public electric vehicle is preferred among other transportation modes namely shuttle bus, public bus, private motorcycle, and private car, specifically for long-range (approximately more than 20 km) daily commuting. Data collection process is conducted using questionnaire-based survey that is divided into three sections: Stated-Preferences (SP), Sociodemographics (SD) characteristics, and statement evaluations (SE). SP includes eight sets of selected labelled experiments with several attributes: travel time, travel cost, waiting time, access and egress time, access and egress cost, frequency, congestion time, and parking cost. Information on age, gender, and income are compiled in the SD section. The experimental design is developed using NGENE with a D-efficient design. We manage to gather 333 respondents and each of them corresponds to the 8 scenarios presented. Thus, a total of 2664 observations are acquired for further analysis in the light of travel mode choice behavior. An open source Python package, Biogeme, is used for the choice modeling analysis. Biogeme is designed for the maximum likelihood estimation of parametric models in general, with a special emphasis on discrete choice models. In this study, multinomial logit (MNL) modeling techniques is used as it is common in transportation research. There are 39 parameters (K= 39) used in the study comprised of four alternative specific constant (ASC): ASC1 for public electric vehicle (PEV), ASC3 for public bus (PB), ASC4 for private motorcycle (PM), and ASC5 for private car (PC); eight coefficients (beta) for each PB, PEV, and SH comprised of access and egress (AE), access and egress cost (AEcost), congestion time (Ctime), frequency (Freq), travel time (Ttime), waiting time (Wtime), emission level, and vibration and noise level; five coefficients for each PM and PC comprised of congestion time, parking cost, travel time, emission, and vibration; and a generic coefficient of travel cost. This result indicates that Indonesian commuters are sensitive to congestion time, travel time, and travel cost in all transportation modes except public bus; and to vibration and noise level only in public transportations. Emission level in public transportations is more concerning for the commuters that in private transportations. Frequency of public transportations are unimportant and parking cost only matters to private car users.

Keywords
Electric vehicles; transportation; choice model; SP survey; Indonesia

Topic
EV Socio-Economical Impact

Link: https://ifory.id/abstract/LeDMr6bgcfU4