Indonesia Conference Directory

Corresponding Author
SRI AGUSTINA

Institutions
Chemical Engineering Department, University of Sultan Ageng Tirtayasa (UNTIRTA), Banten

Abstract
In recent times, there is growing interest to develop advanced materials for food packaging applications which can improve food safety and shelf-life. Active food packaging systems has been used as an effective method to enhanced the food safety and shelf-life. Chitosan nanoparticles represents interesting properties which makes it a suitable material for active packaging system. The stability and properties of chitosan nanoparticles can be enhanced by the modification of chitosan using biopolymer and bioactive compound. In this study, the modified chitosan nanoparticles were prepared via emulsion-based self-assembly technique using Poly Vinyl Alcohol (PVA) and acrylate polymer. Bioactive compound was encapsulated in chitosan nanoparticles to enhanced the property of active packaging materials. The systematic condition in preparation was studied. The characterization and morphology of the nanoparticles were investigated by Dynamic light scattering (DLS) and Transmission electron microscopy (TEM) analysis. The obtained results indicate that the modified chitosan nanoparticles may be a promising material for active food packaging materials.

Keywords
Nanoparticles, Chitosan, Self-Assembly, Emulsion, Active Packaging Materials

Topic
Chemical Engineering

Link: https://ifory.id/abstract/2BdMCfatRHEe

Corresponding Author
Sopiah sopiah

Institutions
a) Department of Management, Faculty of Economics, Universitas Negeri Malang
*sopiah.fe[at]um.ac.id
b)Department of Management, Faculty of Economics, Universitas Negeri Malang
c) Department of Management, Faculty of Economics, Universitas Negeri Malang
d) Department of Management, Faculty of Economics, Universitas Negeri Malang
e) Sekolah Tinggi Keguruan dan Ilmu Pendidikan (STKIP) PGRI Pasuruan

Abstract
Researches on this topic have been widely studied by experts in the field of human resource management and organizational behavior, however, the certainty of the relationship between variables is still unclear. The increasing number of students enrolling in universities should be compensated with provision of good-quality teaching to enhance students- satisfaction. The aim of the study is to examine the effect of lecturers- competency on students- satisfaction directly or indirectly through perceived teaching quality. Path analysis are used to analyze data from 180 lecturers and 600 students from 6 public and private universities in Indonesia. The main findings of the study: 1) There is a positive and significant direct effect of the lecturers- competency on perceived teaching quality; 2) There is a significant positive direct effect on the lecturers- competency, perceived teaching quality on students- satisfaction, 3) There is a significant positive indirect effect on the lecturers- competency on students- satisfaction through perceived teaching quality.

Keywords
lecturers- competency; perceived teaching quality; students- satisfaction

Topic
Islamic Economics and Business Education

Link: https://ifory.id/abstract/rCacg9ERm7Fh

Corresponding Author
Dandun Mahesa Prabowoputra

Institutions
1.Graduate School of Mechanical Engineering, Sebelas Maret University, Jl. Ir. Sutami 36 A, Central Java, Surakarta, 57126 Indonesia
2.Department of Mechanical Engineering, Sebelas Maret University, Jl. Ir. Sutami 36 A, Central Java, Surakarta, 57126 Indonesia
3.Department of Naval Architecture and Marine System Engineering, Pukyong National University,Busan 48513, South Korea

Abstract
Savonius water turbine research is still growing today. One of the developments that has been made is about modification of geometry. The research that has been done aims to improve the efficiency of savonius turbines. Savonius turbine has a simple structure, and is easily applied so that research on the savonius turbine is interesting. Savonius rotor ability that can operate at low velocity is an advantage that can be combined in the process of developing renewable energy. One of the researches that develops is changes in blade shape. In this study a change in blade shape was carried out. The circular profile "S" shaped geometry is modified into a semi-circular profile "L" with an outer overlap. Research has been carried out simulations using Ansys software with CFX Solver. Savonius rotors that have been used in this study are rotors with aspect ratio 1. Simulation has been done on 3-dimensional modeling and on the properties of pure water. Mesh is performed on the workbench with the tetrahedral method, and uses the K-epsilon turbulent type. From this study it was found that blade modification into semi-circular with "L" profile and outer overlap can improve the performance of the savonius water turbine on the horizontal axis.

Keywords
Savonius Rotor, Water Turbine, CFD, Renewable Energy, Coefficient of Power

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/4LFp3fx7AQ6u

Corresponding Author
Dandun Mahesa Prabowoputra

Institutions
1.Graduate School of Mechanical Engineering, Sebelas Maret University, Jl. Ir. Sutami 36 A, Central Java, Surakarta, 57126 Indonesia
2.Department of Mechanical Engineering, Sebelas Maret University, Jl. Ir. Sutami 36 A, Central Java, Surakarta, 57126 Indonesia
3.Department of Naval Architecture and Marine System Engineering, Pukyong National University,Busan 48513, South Korea

Abstract
Indonesia has a huge hydro energy potential, but the installation is still relatively small. This fact shows that hydro energy as a power plant still needs to be developed. Many studies concerning water turbines as supporting the development, one study on the performance of the turbine Savonius water. Simulation research is one way to accelerate the research process towards increasing the efficiency of the savonius water turbine. In this research, the effect of overlap ratio and number of blades on the performance of the water turbine savonius has been carried out. The study was carried out in a numerical analysis using computational fluid dynamic approach. The study began with a mesh independence study to obtain effective mesh. The research was simulated in 3 dimensions. Aspect Ratio used in this research is 1, with variations in the number of blades 2, 3 and 4. Variations used overlap ratio 0.1, 0.2 and 0.3. The factors that have been studied are TSR, Overlap Ratio, and Number of Blades. Where the influence of these factors was analyzed using the Factorial Design method

Keywords
Savonius Rotor, Water Turbine, CFD, Renewable Energy, Coefficient of Power, Factorial Design

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/4uTPMAEDCzB2

Corresponding Author
Ezra Diamond Christo Purwanto

Institutions
University of Indonesia

Abstract
The textile and apparel industry is a rapidly developing industry and has an influence on the economy. Despite having high competition, the textile and apparel industry is one of the interesting industries to be made into business opportunities in several big cities. PTGP is a company that has taken business opportunities in the apparel industry for decades. Companies in the mature category are not always successful in doing business. PTGP must close the business branches owned because operating costs are higher than the revenue generated from sales. Efficient operational costs are needed by every company in carrying out the companys operations. Forecasting is a way that can be used for the companys operational effectiveness and operational cost efficiency. The right time series forecasting method can be determined by looking at the historical data of demand for the product. Forecasting accuracy can also be used as a condition for selecting the forecasting method to be used. Single Exponential Smoothing is a forecasting method used in general in various industrial fields. Holt-s Model is a forecasting method used with the influence of trends in the data used. Holt-s Model has more precise accuracy than Single Exponential Smoothing so that the use of Holt-s Model forecasting is more recommended in the textile and apparel industry because there are influential trends in demand.

Keywords
Forecasting, forecasting method, time series, Single Exponential Smoothing, Holt-s Model

Topic
Innovation, IT, Operations and Supply Chain Management

Link: https://ifory.id/abstract/QBj3RFPTubwC

Corresponding Author
Yumiati Yumiati

Institutions
Universitas Terbuka, Universitas Bengkulu

Abstract
This study aimed to improve the ability of the understanding of semigroup concept through Concept Attainment Model. The method of this study was quasi experiment. The design of this study used one group pretest posttest design. The sample of the study was 34 students of the Study Program of Mathematics Education at Teacher Training and Education Faculty, Universitas Bengkulu at the subject of Abstract Algebra of Even Semester Academic Year 2018-2019. The instrument used in this study was a test about semigroup concept containing 4 items. The data was analyzed qualitatively and quantitatively. The results of this study were: 1) the improvement of the students- ability of the understanding of semigroup concept was 0.68, including the medium category; 2) the achievement of the ability of the understanding of semigroup concept was 75.44, including the high category.

Keywords
Semigroup, Concept attainment

Topic
Mathematics Education

Link: https://ifory.id/abstract/WPyZYLfBQ4Tt

Corresponding Author
Mukhamad Suhermanto

Institutions
(a) Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Malang, Indonesia
(b) Purdue University, Mechanical Engineering, West Lafayette, IN, USA

Abstract
This paper presents the comparative techno-economic analysis on three different renewable energy sources (i.e. Solar (Thermal and PV) and Wind Energies (WE)) paired with two desalination systems (i.e. Multistage Flash (MSF), Multiple-effect Distillation (MED) and Reverse Osmosis (RO)). The aim of this investigation is to provide thorough technology and economic analysis on the renewable-energy-driven desalination system for Nusa Tenggara Timur (NTT) province. NTT has nationally most districts (20 regions) accounted for water drought every year due to low water precipitation and lack of fresh water resource. It is investigated numerically using Engineering Equation Solver (EES) taking account for most major input considerations. The Solar thermal driven desalination is used to power MSF and MED. The Solar PV and WE are utilized separately for the source of energy for RO system. The results can be utilized as major consideration on which technology should be applied to tackle the fresh water supply drought in NTT. In addition, the economic analysis provides ample explanation for the economic feasibility on the project to be applied. Based on the investigation, the Solar Thermal powered MED and MSF promises biggest feasibility techno-economically with lowest LCOEs.

Keywords
renewable energy, desalination, indonesia, techno-economic, reverse osmosis

Topic
Renewable Energy

Link: https://ifory.id/abstract/g7eRE6TynQHp

Corresponding Author
Rizki Ridho Darmawan

Institutions
UIN Sunan Gunung Djati Bandung
A.H. Nasution 105, Cipadung, Sub-District Cibiru, Bandung City, West Java 40614

Abstract
Di project Kali ini saya bertujuan untuk membuat simulasi dan menghitung pergerakan kecepatan katrol. Metodenya menggunakan untuk simulasi menggunakan JavaScript Dan perhitungannya menggunakan excel. Pada percobaannya saya menggunakan 5 Kali perhitungan Dan 5 level Dan menghasilkan perbandingan yang beda tipis yaitu 2m/s atau 0,5% Keyword : katrol, JavaScript, excel, simulasi, perhitungan, pergerakan kecepatan

Keywords
Fisika; katrol

Topic
Teoretik

Link: https://ifory.id/abstract/ru7bTyGJa6UB

Corresponding Author
Eko Januari Wahyudi

Institutions
ITB

Abstract
Pada penelitian ini kami mempelajari algoritma komputasi dari teknik equivalent layer source untuk mendapatkan transformasi upward continuation data geomagnetik. Analisis dari prosedur perhitungan teknik equivalent layer source dan transformasi upward continuation dilakukan dengan contoh numerik dari data sintetik sederhana. Data sintetik dibangun dengan menggunakan diskritisasi model di bawah topografi yang terdiri dari sejumlah body prismatik. Perhitungan data sintetik dengan forward calculation dilakukan untuk dua set stasiun (pada elevasi topografi dan pada elevasi bidang datar di atas topografi tertinggi). Dua data set tersebut digunakan sebagai acuan data sintetik pada penelitian ini. Mekanisme untuk mendapatkan equivalent layer source adalah menggunakan perhitungan inversi dari input data sintetik (set stasiun pada elevasi topografi). Pada penelitian ini, kami melakukan eksplorasi dengan mencoba beberapa variasi dari parameter inversi serta jumlah lapisan atau jumlah model bawah permukaan pada skema perhitungan inversi. Berdasarkan penelitian ini, prosedur perhitungan untuk variasi topografi dapat diperoleh dengan baik menghasilkan model equivalent layer source dengan selisih response geomagnetik terhadap acuan data sintetik pada rentang -10 sampai +10 nT. Setelah model setara diperoleh, kami melakukan perhitungan forward calculation-nya untuk mendapatkan transformasi upward continuation pada set stasiun yang terletak di atas topografi (bidang datar). Berdasarkan transformasi upward continuation pada penelitian ini, kami mendapatkan selisih response geomagnetik terhadap acuan data sintetik pada rentang -10 sampai +10 nT. Secara kualitatif berdasarkan pengujian sintetik ini, kami mendapakan transformasi upward continuation yang memuaskan.

Keywords
equivalent layer source, upward continuation, geomagnetik, forward calculation, inversi

Topic
Kebumian

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

Corresponding Author
Ferli Septi Irwansyah

Institutions
a) Department of Chemical Education, UIN Sunan Gunung Djati Bandung, Indonesia
*ferli[at]uinsgd.ac.id

Abstract
This study aims to develop students science process skills through the use of practicum devices that can determine the reaction rate quantitatively. Experiments to find out the optimum condition of the practicum for determining the reaction rate based on gas formation are carried out to reduce to a worksheet. Validated worksheets are implemented to students using pre-experimental design in the form of one-shot case study. The research subjects were 38 students of the Chemistry Education, State Islamic University Bandung, who took kinetics and equilibrium courses. The results showed that the optimum conditions for determining the reaction rate were the use of H2O2 concentrations of 1.5%, 3%, 4.5% and 6%, catalysts used is 0.002 mol, and the volume of O2 gas observed is 10 mL. The results of observations on student activities during the practicum show an average value of 98%. The results of the students science process skills analysis on the determination of the reaction rate based on gas formation overall are interpreted very well with an average value of 88. The aspect of collecting data has the highest average value that is explained very well with a value of 100. The element of concluding has the lowest average value that is interpreted well with a value of 76.

Keywords
Science Process Skills; determination of reaction rate; gas formation reaction

Topic
CHEMISTRY EDUCATION

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

Corresponding Author
Lestari Rahayu

Institutions

Universitas Muhammadiyah Yogyakarta
Indonesia

Abstract
Sustainable Food House (Kawasan Rumah Pangan Lestari (KRPL)) is one of the programs to accelerate food consumption diversification (Percepatan Penganekaragaman Konsumsi Pangan (P2KP)) to fulfill food needs in Indonesia. This study aims to describe the implementation, analyze optimization, and determine the factors that influence the optimization of KRPL program in KWT Migunani. The data were collected through interviews, observation, and documentation. The determination of respondents was done through census to 27 members of the Farmer Women Group (Kelompok Wanita Tani/KWT Migunani). The analysis was done using descriptive analytics to know the factors that influence the optimization. The results showed that the implementation of the program is quite accomplished, observed from KWT members activeness in group activities, farming training, and counseling which are quite high. The optimization of the program is also classified as quite accomplished, seen from the indicators of many commodity types and technology, more uses of the yard, and more additional food supplies for the family. The internal factors that affect the optimization are formal education, family income, cosmopolitan rate, and motivation; while the external factors are the intensity of extension, availability of production facilities, and member involvement in KWT.

Keywords
KRPL, KWT, optimization of KRPL program

Topic
International Symposium on Social Sciences, Humanities, Education, and Religious Studies

Link: https://ifory.id/abstract/BuN9EbAUTDK3

Corresponding Author
Triwara Budhi Satyarini

Institutions
Muhammadiyah University of Yogyakarta, Indonesia

Abstract
Corn is the main commodity of Grobogan Regency. Considering the potential of corn, Bank Indonesia in cooperation with the Government of Grobogan Regency creates the development program of corn cluster. The selected area as the object is Gapoktan Sido Murni in Tambakselo Village. However, there is an area with the same potential that does not have a cluster development program, that is Gapoktan Sido Manunggal in Dokoro Village, Therefore this research aims to know and compare the income, profit and feasibility of corn farming both. The number of respondents of 20 farmers in each village, determination by non random sampling technique. The data obtained were analyzed descriptively. Corn farming was analyzed by cost analysis, income, profit, R / C, land productivity, labor productivity, and capital productivity. The results showed that the farmers of Gapoktan Sido Murni earned an average income of Rp11.724.722 and profit of Rp7.917.851. Meanwhile, farmers in Gapoktan Sido Manunggal earned an average income of Rp9.740.915 and profit Rp5.991.161. The ratio of (R-C) in Gapoktan Sido Murni was 1,9 while Gapoktan Sido Manunggal had 1,6 of R/C, land productivity in Gapoktan Sido Murni was Rp9.928.684/Ha/season and Gapoktan Sido Manunggal was Rp7.991.161/Ha/season, and capital productivity in Gapoktan Sido Murni 148% and Dokoro 104%. Based on the four feasibility analysis used, Gapoktan Sido Murni had higher feasibility value compared to that of Gapoktan Sido Manunggal, thus program of corn cluster is worth developing.

Keywords
Cluster, Corn, Feasibility, Wirosari, Grobogan

Topic
International Symposium on Social Sciences, Humanities, Education, and Religious Studies

Link: https://ifory.id/abstract/4w2xkyf6EAaM

Corresponding Author
Pujastuti Sulistyaning Dyah

Institutions
Universitas Muhammadiyah Yogyakarta, Indonesia

Abstract
This study aims to determine the cost, revenue, income, profitability, and feasibility of sweet corn and hybrid corn farming in the Plemahan district. The technique of determining the research area is done by purposive sampling with the consideration that the Plemahan district has the highest corn production. Determination of respondent samples was done by the census of 20 sweet corn farmers and 30 hybrid corn farmers. The method of analysis is carried out by describing the results of tabulations including income, R/C, capital productivity, land productivity, and labor productivity. The results showed that total farming costs were Rp8,438,496 for sweet corn and Rp9,473,266, - for hybrid corn with a land area of 4000 m. Income of sweet corn farmer is Rp7,915,054 during planting season (3 months). Then, income of hybrid corn is Rp7,611.5 during one planting season (4 months). The profit obtained from sweet corn is Rp4,473,588 while the profits of hybrid corn farmers amounted to Rp3,639,734. The feasibility of sweet corn is higher than hybrid corn.

Keywords
Hybrid corn, Sweet corn, Feasibility farming

Topic
International Symposium on Social Sciences, Humanities, Education, and Religious Studies

Link: https://ifory.id/abstract/txKhzGyH34c9

Corresponding Author
Dian Harmaningsih

Institutions
YAI Jakarta

Abstract
Sama dengan ABS 1443

Keywords
Sama dengan ABS 1443

Topic
International Symposium on Social Sciences, Humanities, Education, and Religious Studies

Link: https://ifory.id/abstract/UgahqZMuYdr9

Corresponding Author
Titiek Hidayati

Institutions
1.Public health and Family medicine, Medicine and Health Science Faculty, UMY
2.Pharmacology and Clinical Pharmacy, Pharmacy Faculty, UAD; Ahmad Dahlan Drug Information and Crisis Center;
3.Pathology anatomy department, Medicine and Health science Faculty, UMY
4.Surgeon department, Medicine and health science Faculty, UMY

Abstract
Interferon-gamma (IFN-γ) is one of the central cytokines in the anti-carcinogenesis immune response. Lymphocytes are one of the IFN-y producing cells. Black cumin seeds (BCS) have an active content of thymoquinone and unsaturated fatty acids with biological activity as immunomodulators. This study aimed to determine the effect of administration of BCS extract on IFN-y secretion activity by SD rat lymphocytes induced by dimethylbenzanthracene (DMBA). In vivo experimental study on DMBA-induced SD rats. BCS extract was given with three doses for two weeks before being induced and five weeks during DMBA induction. IFN-y levels in lymphocyte culture supernatants were determined by the ELISA method. The difference in IFN-y levels between groups was analyzed by ANOVA test, the significance of 95%. The results showed that administration of BJH extract for 14 days did not affect cellular composition toward the edge of the test animal. BCS extract can increase IFN-y secretion activity by DMBA-induced SD rat lymphocytes.

Keywords
black cumin seed, IFN-y; DMBA: immunomodulator, carcinogenesis.

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/7j46cXzq3N9D

Corresponding Author
Imanuddin Hasbi

Institutions
Business Administration, School of Communication and

Business, Telkom University, Jalan Telekomunikasi,

Terusan Buah Batu, Bandung, Indonesia 40257

imanhasbi[at]telkomuniversity.ac.id

Abstract
The Industrial Revolution 1.0 was characterized by the mechanization of production using hydropower and steam. Then mass-producing companies became an open possibility thanks to the presence of electricity in the Industrial Revolution 2.0. Industry and production can then realize production automation during the Industrial Revolution 3.0 because of the support of the electronics industry and information technology. Industrial Revolution 4.0 is understood as a factory computerization, automation and data reconciliation to realize smart factories. Structured in this smart factory are robots or cyber physical systems, Internet of things (IoT), cloud computing (cloud), and cognitive computing. Everything is digital. The Industrial Age 4.0 will continue to present many changes that cannot be stopped. All these changes encourage people to adapt, because ultimately it will change behavior, how to work to the demands of skills. Nowadays, the rapid development of technology that is very noticeable changes is increasingly transparent and horizontal human behavior like this digital era. So, character is the only thing that can give a strict line to distinguish which people will be successful and which are not. Digital technology make integration of these feasible foundations, and technology offers new ways to contribute positively to human character in order to become champions in the face of this hypercompetitive business competition climate.

Keywords
Digital Era, Character, Excellence, Focus, Proffesionalism

Topic
Strategic Management, Entrepreneurship and Contemporary Issues

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

Corresponding Author
Runisah -

Institutions
Pendidikan Matematika, Universitas Wiralodra, Jl. Ir. H. Djuanda Km 3 Indramayu 45213, Indonesia

Abstract
The purpose of this study is to investigate the role of the 5E Learning Cycle with Metacognitive Techniques (LCM) and Mathematical Prior Ability (MPA) on Mathematical Creative Thinking Skills (MCTS). The subject of the study was 173 eighth grade students from high level school and medium level school in Indramayu, Indonesia. This study used the quasi-experimental method with a pretest-posttest control group design. At each school level, three classes were used in this study, one class used the 5E Learning Cycle with Metacognitive Techniques (LCM), and the other class used the 5E Learning Cycle (LC) and Conventional Learning (CL). The students were classified into three levels based on Mathematical Prior Ability (high, medium, and low). The instruments used are MPA test and MCTS test. The study reveals that in terms of overall and in every MPA level, LCM gives better influence on students- MCTS than LC and CL, LC gives better influence on students-MCTS than CL. 2) There is an interaction effect between the learning model and MPA level toward the enhancement of students MCTS.

Keywords
Mathematical Creative Thinking Skills, The 5E Learning Cycle, Metacognitive Techniques.

Topic
Mathematics Education

Link: https://ifory.id/abstract/8Qhk4LFmW63T

Corresponding Author
Mellawaty Mellawaty

Institutions
a) Departement of Mathematics Education, Universitas Wiralodra
b) Departement of Mathematics Education, Universitas Negeri Semarang

Abstract
The method in this study, Mixed Method Design with concurrent embedded strategy. This research was conducted mathematical creative thinking skills of students class VII-B of Indramayu State Middle School 1, Academic Year 2018/2019. Sampling technique used snowball sampling technique.There were three stages in this research, the first was designing learning process stage that consisted of syllabus, lesson plan, learning syntax and expert validated test items. The second was the implementation. It was conducted to see the students- respond and activity during the learning process. The third was evaluation stage. This was conducted to know the learning effectiveness. The result, it was obtained that (1) the learning design integrated Mathematical Habits of Mind (MHM) and Missouri Mathematic Project (MMP) consists of syllabus, lesson plan, learning syntax, students- worksheet and TKBKM were valid; (2) The respond of students and teacher were 82,9% good and happy to involve in the process of learning design that integrates Mathematical Habits of Mind (MHM) and Missouri Mathematic Project (MMP); (3) the learning that integrates Mathematical Habits of Mind (MHM) with Missouri Mathematics Project (MMP) learning is effective in improving mathematical creative thinking students with moderate categories.

Keywords
Mathematical Habits of Mind (MHM), Missouri Mathematics Project (MMP) learning model, Mathematical Creative Thinking Ability

Topic
Mathematics Education

Link: https://ifory.id/abstract/7FdywaxAB2XW

Corresponding Author
Riksa Wibawa Resna

Institutions
Program study of Nursing, Institute of Health Science of Banten
Program study of Vocational, University of Indonesia
Public Health Center of Pondok Ranji

Abstract
Approximately 72.4% of the elderly in Indonesia having problems immobility which varies from a functional problem moving up to a total inability to move. Immobility tends to be easily found but often not recognized as a problem in the elderly. Elderly immobility detection efforts ranging from Posyandu services is indispensable to be able to identify the various problems of mobility in the elderly in the community. The study aimed to developing and analyzing model for elderly mobility detection in community that can be used by cadres quicly and easily by using google form as a tool. This research was conducted to test the mobility of elderly detection model in the form of paper and google form to the 30 volunteers who perform detection mobility problems on 60 elderly health centers located in the region of Serpong and Pondok Ranji. Based on study, showed that the speed detection by using google form (10.60 minute; SD: 2.634) than using the paper form (9:33 minute; SD: 1,988). The lack of exposure to use of google form as a media for collecting data on health problems in elderly by cadres, resulted in the majority of respondents stating that the use of a paper-based detection model was easier than using the google form. Therefore, educating the cadres to be able to use technology as a tool that can simplify and speed up health services.

Keywords
mobility detection; older adults; google form

Topic
Healthcare Practice and Services

Link: https://ifory.id/abstract/HLTxwmu7yF6n

Corresponding Author
Jeyashelly Andas

Institutions
a Faculty of Applied Sciences, Universiti Teknologi MARA, 02600 Arau, Perlis, Malaysia

Abstract
This study introduces hollow activated carbon from kapok (Ceiba pentandra) which were prepared using KOH (CB1) and K2CO3 (CB2) as the activating agents at 1:1.0 (raw kapok: KOH or K2CO3), impregnation time 15 min and activation temperature of 400°C. The iodine number, quantified by Sodium Thiosulphate volumetric titration and percentage yield of CB1 (1446.30 mg/g, 62.60%) was higher compared to CB2 (1200.23 mg/g, 53.50%) which confirmed the effectiveness of KOH as the activating agent. The raw material and prepared activated carbons were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope (SEM) and CHNS/O Analyzer. Absence of certain functional groups were observed for the activated carbons compared to the raw kapok, resulting from the carbonization and activation processes. CHNS/O Analyzer confirmed the increase in carbon content of CB1 (63.93%) and CB2 (62.86%) compared to the raw kapok (43.54%). Hollow tube were viewed from the SEM analysis for all the samples. CB1 and CB2 were evaluated in the transesterification of waste cooking oil (WCO) using 0.2 wt.% catalyst, methanol to oil molar ratio of 3:1 at 60˚C for only 1 h. The percentage of biodiesel yield increased in a trend as given: without catalyst (35.46%) < CB2 (87.46%) < CB1 (89.57%). High catalysis of CB1 was presumably due to its high surface area and high carbon content compared to CB2. This study was successful as it introduces a facile and cheap conversion of waste kapok into promising catalyst for green synthesis of biodiesel.

Keywords
activated carbon, kapok, waste cooking oil, biodiesel, catalyst

Topic
Synthesis and Characterization Techniques

Link: https://ifory.id/abstract/PZydkLn6vJpK

Corresponding Author
Nurfauziah Nurfauziah

Institutions
Jurusan Manajemen
Fakultas Ekonomi
Universitas Islam Indonesia
Ringroad selatan, Condongcatur, Depok Sleman
Yogyakarta

Abstract
Penelitian ini bertujuan untuk menguji pengaruh intellectual capital, rate of growth of intellectual capital (ROGIC) dan pengungkapannya terhadap kinerja keuangan perusahaan yang diproksikan dengan return on asset (ROA). Metode yang digunakan untuk mengukur intellectual capital yaitu value added intellectual coefficient (VAIC™). Penelitian ini juga menguji pengaruh dari ketiga komponen intellectual capital (VAIC) yaitu physical capital (value added capital employed – VACA), human capital (value added human capital – VAHU) dan structural capital (value added structural capital – STVA) terhadap kinerja keuangan perusahaan. Penentuan sampel dilakukan menggunakan metode purposive sampling dan diperoleh sampel sebanyak 250 perusahaan jasa yang terdaftar di Bursa Efek Indonesia periode 2013-2017. Teknik analisis data dalam penelitian ini menggunakan analisis regresi berganda dan uji t. Hasil penelitian menunjukkan bahwa intellectual capital (VAIC), VACA dan VAHU berpengaruh positif dan signifikan terhadap kinerja keuangan perusahaan. Sedangkan STVA berpengaruh negatif dan signifikan terhadap kinerja keuangan perusahaan. Serta ROGIC dan ICD tidak berpengaruh terhadap kinerja keuangan perusahaan.

Keywords
Intellectual Capital (VAIC), Return on Asset (ROA).

Topic
Manajemen Keuangan

Link: https://ifory.id/abstract/Hw32KavFyGjP

Corresponding Author
Faisal Arsya Rakhmada

Institutions
Universitas Indonesia

Abstract
The number of users of the internet in Indonesia has grown at the unbelievable rate. There is no exception with the growth rate of the online travel agent in Indonesia. When making online transaction, including online travel agent transaction, consumers are faced with uncertain situations. The uncertain situations could grow increasingly critical when consumers have to share their personal sensitive information in the transaction process. In this context, building and maintaining trust becomes very important to online marketers as various studies have shown that the lack of trust is one of main reasons for consumers- hesitancy to online shopping. The evidence has shown that trust could reduce the perceived risks and by that could also determines success or failure of e-vendors. The research objective is to analyze the antecedents of behavioral intentions on online travel agent company. Also to see whether the trust formation between generation X and generation Y has difference. The research is online surveys based conducted with convenience samples from two different generation. The results have shown a robust relationship between initial trust towards online travel agent and consumers- behavioral intentions. The results also suggest that there is no differences between two generations regarding the formation of initial trust and behavioral reactions.

Keywords
Online Travel Agent, Behavioral Intentions, Trust Propensity, Initial Trust, Familiarity with E-travel Shopping, Propensity to Web Risk

Topic
Economics

Link: https://ifory.id/abstract/ghJwZdz97EnL

Corresponding Author
RIZKI HADIWIJAYA

Institutions
a) Science Education Program, Postgraduate, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi, Bandung, Indonesia
b) Department of Computer Science Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi, Bandung, Indonesia
c) Department of Physics Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi, Bandung, Indonesia

Abstract
This article discusses the development of assessment instruments for the deepening of science materials in accordance with 21st century research. The 21st century is an era trend that requires skills in life skills. Humans are successful in this century if they can keep abreast of developments and be able to adapt ways of thinking with the era. 4Cs become the main skill in building a way of thinking where its existence affects the world of education. Achievement of these competencies can be observed if there are appropriate assessment instruments. Instrument is developed with research and development (R&D) methodology based on 21st century skill indicator analysis through validation from the expert team. The limited scale test and wide scale are used as benchmarks in measuring the validity of the developed institutions.

Keywords
asessment, 21st century skills, research and development (R&D)

Topic
SCIENCE EDUCATION

Link: https://ifory.id/abstract/kNb9eAMqXJwQ

Corresponding Author
nurul khodijah

Institutions
1 Mahasiswi Program Studi Magister Pendidikan Fisi8ka Universitas Negeri Gorontalo
2 Dosen Progtam Studi Magister Pendidikan Fisika Universitas Negeri Gorontalo
3 Dosen Progtam Studi Magister Pendidikan Fisika Universitas Negeri Gorontalo
Email : nurulkhadijah008[at]gmail.com Jl. Jend. Sudirman No.06 Gorontalo 9613

Abstract
Instruments in a study have a huge influence on determining the quality of a research instrument or good measuring instruments are valid and reliable, where validity is the ability of an instrument to Precisely measuring it. In addition to the validity, a test given to students should also be reliable or achieve the measurement with the exam carried out to achieve consistent results. The purpose of this research aims to determine the quality of the instrument of physics by using Rasch methods in learning High school physics. This type of research uses a quantitative approach using the Rasch method of analyzing the data. Sampling carried out using random or random sampling techniques with the subject of the study is X class MIA 1 and X MIA 2 MAN 2 Gorontalo regency. The research instrument uses a self-assessment sheet that is distributed to each student. The analysis technique is cultivated using Rasch method through the Ministep software program. The results showed that out of 50 respoden there are 30 students who have a good/high physics learning attitude and include valid with logit value above 0.0, then there are 7 students who have an attitude to learn physics that are not good/low With logit values below 0.0 and 13 students are declared invalid because they do not meet the criteria fit. The result of the validity of respondents indicates that students are more likely to approve items. While the validity of a grain item indicates that the instrument with a called grain can be used to measure. The level of reliability of respondents still shows weak looks based on criteria while the reliability of AItem shows is very good.

Keywords
instrument quality, affective Instrument, Rasch

Topic
PHYSICS EDUCATION

Link: https://ifory.id/abstract/MabfkqgJA4ze

Corresponding Author
Siti Nur Aisyah

Institutions
Department of Agrotechnology, Faculty of Agriculture, Universitas Muhammadiyah Yogyakarta

Abstract
As part of agricultural cultivation practices, especially plant breeding activities, the resistance of cultivated plants to pest attacks is one of the characteristics that must be prioritized. This research was conducted to study the type of pest and their damage intensity as the first step in the breeding program of waxy corn and black corn. The study was carried out through field survey activity on a weekly observation starting from plants aged 1 to 12 weeks old after planting. The type of pest found was identified and the damage intensity was calculated. The type of pests found consisted of grasshoppers, thrips, stem borer, earworm, and rat as well. There was no difference in population size and damage intensity of all pests in two corn varieties. The population size and damage intensity of all pests were affected by the age of corn plant because each pest was attacked at different times either when the plants were in the vegetative or generative phase or both. Generally, the damage intensity of pest is still in the mild to moderate category. A monitoring activity needs to be conducted in the subsequent activity to obtain information on the development of these potential pest species and their populations size.

Keywords
Black corn, corn, Helicoverpa armigera, Ostrinia furnacalis, potential pest, waxy corn

Topic
International Conference on Sustainable Agriculture

Link: https://ifory.id/abstract/jvcBTCLDR6rQ

Corresponding Author
Muhammad Adha Ilhami

Institutions
Universitas Gadjah Mada;
Universitas Sultan Ageng Tirtayasa

Abstract
Three-dimensional concurrent engineering (3DCE) concepts provide new approach for integrating product, process, and supply chain design and give companies the opportunities to shorten product development lead time and time to market eventually, increase product variant and quality, and reduce product development cost. However, the 3DCE approach is not comprehensive yet since the researches are continuing and growing. This article provides bibliometric literature review on 3DCE as a term and concept through mainly Scopus database and Mendeley software for managing and resuming the references. After manual filtering and reading we conclude 37 articles strongly related to the term of 3DCE. Finally, we classify the articles based on its keywords into three cluster of words using VOSviewer software. We find that "supply chain", "new product development", and "3dce" are the most frequently words of those articles which represent the research stream or the researcher-s background.

Keywords
3DCE; integrated product development; VOSviewer

Topic
Industrial Engineering

Link: https://ifory.id/abstract/WFLn9kXUhfVN

Corresponding Author
Edi Prasetyo Prasetyo

Institutions
Faculty of Law, Borobudur University
Jalan Raya Kalimalang No.1 Jakarta Timur

Abstract
This paper discusses the certainty of legal protection for doctors who treat patients with emergency cases are reviewed from human rights and medical Practice in Law No. 29 year 2004. Informed consent is absolutely given and is requested for approval before medical action is conducted by the physician to the patient as stipulated in article 45 Law No. 29 year 2004 on medical practice. The issue raised in this paper about whether there is an exception Informed consent is not given at the beginning of the treatment of emergency patients in accordance with Indonesian legislation and to know the obligations of Informed consent for emergency patient handlers and the legal aspects incurred when they were not conducted. This paper uses the normative method due to conflict of norms, Informed consent as an absolute condition that is difficult to apply for emergency patient handling. Informed consent can be excluded for the handling of emergency patients as stipulated in the Law of Health Ministry A which is an explanation of article 45 and article 52 letter a Law No. 29 year 2004 on medical practice but hierarchically Law of Healt Ministry should not contradict the regulation of the law above which is medical practice law, so that it is necessary to do the reconstruction so that there is a legal certainty for doctors in the handling of emergency cases. In addition, doctors also have legal protection rights reviewed from the perspective of human rights because if all procedures and administrations are in accordance with the standards but still can be charged because it is still not complete explanation and details in the article of medical practice Law No. 29 year 2004.

Keywords
Informed consent, emergency handling, Law of medical practice, Law of Health Ministry, human rights

Topic
Constitutional Law

Link: https://ifory.id/abstract/H7w3qnzpamXG

Corresponding Author
Anna Maria Sri Asih

Institutions
Industrial Engineering Program, Department of Mechanical and Industrial Engineering, Universitas Gadjah Mada (UGM)
*amsriasih[at]ugm.ac.id

Abstract
Fulfilling electricity needs which are mostly supplied by the coal steam power plants, such as Indonesia, has its own challenges. Therefore, the government is expected to provide a reliable coal supply to each power plant. The coal supply chain is a complex network in which various coal specifications can be supplied by more than one supplier, and also uncertainty in demand and lead time exist. Each supplier offers different price for the coal and also different transportation cost based on the location of the supplier which are scattered in several places in Indonesia. In order to find the set of suppliers and transportation route of coal, optimization model that minimizing the purchase and transportation cost of the coal to fulfil demand in the power plant was built. The output from the optimization was used as an input to find the effective safety stock, order quantity, and reorder point needed in each plant in order to prevent the occurrence of stock out. Furthermore, a sensitivity analysis was also carried out to understand the impact of variation in demand and lead time and also the impact of implementing multiple suppliers on safety stock level in each plant.

Keywords
Steam Power Plant, Coal Supply Chain, Stochastic Demand, Stochastic Lead Time, Multi-Supplier

Topic
Industrial Engineering

Link: https://ifory.id/abstract/upAe2xZhbwK8

Corresponding Author
Supeno Supeno

Institutions
Faculty of Law Batanghari University

Abstract
Abstract-The purpose of this research is to know main legal issue in Indonesia and resource of moral in Indonesia in facing to Asean Economic Community (AEC), the research is analytical descriptive method using qualitative approach case law. The result of research are the main legal issue in Indonesia is morality, several moral issue in Indonesia are goodfaith, honest, and responsible, the resource of morality Indonesia extracted from religion, religion has the basic values of intrinsic and universal truth, has a value of truth that is undoubted because the truth comes from of God, has universal truth it applies to all mankind and is naturally acceptable by mankind. Morality as modal to developing national law in facing the Asean Economic Community (AEC), in this research any several opinion to overcome this problem can do to improve of moral issue to reach of believing or trust from other state the members of Asean Economic Community (AEC) for implementation Asean Economic blueprint in Indonesia.

Keywords
Asean Economic Comunity, moral issue, resource of moral

Topic
Philosophy of Law

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

Corresponding Author
Sekar Sakti

Institutions
Industrial Engineering, Universitas Gadjah Mada,
Jalan Grafika No. 2 Kampus UGM, Yogyakarta 55281, Indonesia
*sekarsakti[at]ugm.ac.id

Abstract
The increasing development of the textile industries has made the competition sharper. To maintain a competitive place in the market, it is critical for a textile industry to keep their production effectiveness at the highest level. Total productive maintenance (TPM) can be done to improve production performance, both in terms of quantity and quality. How successful the TPM implementation is measured by Overall Equipment Effectiveness (OEE) which shows the effectiveness level of a particular machine. The imbalance pattern between target and actual production in almost all departments in the textile industry encourages OEE analysis to determine the performance of each machine they use. However, operators are facing difficulties in measuring OEE for every machine manually. This study aims to develop a computerized database system to help measure the OEE calculation so it can help the company knows their real-time machine performance. It automates the process of OEE calculation and identify the losses associated with equipment effectiveness. The developed system is validated using the historical operational data of a Spinning Department in a textile industry.

Keywords
total productive maintenance; overall equipment effectiveness; textile industry

Topic
Industrial Engineering

Link: https://ifory.id/abstract/3t8MfjxXG7dm