Indonesia Conference Directory

Corresponding Author
diki atriana

Institutions
(a) Postgraduate student of UNJ (Universitas Negeri Jakarta) Jalan Rawamangun Muka, Jakarta 13220
(b) Faculty of Management of UNJ

Abstract
The purpose of this research was to evaluate human resource management program of Indonesian Navy Supply officer corps. There are eight branches of corps of Indonesian Navy to fulfill the its tasks and goals. This is a qualitative research using Context Input Process Product (CIPP) model. Data are collected through observation, focus group discussion, dialogue and survey questions. There are 130 Supply officers who being subject to the survey using content analysis technique. The result of this research are as follow: Context, Supply officer should have a proper competence in terms of duty, rank, education and psychology; Input, the software to govern and regulate the program should be revised; Process, there is a lack of planning documents to run the program properly; and Product, the program is a must program not only for Supply corps but also for the Indonesian navy. It is clear that the program is vital and significant for the navy and need to be refined in the near future.

Keywords
Program evaluation, CIPP model, Indonesian Navy, HRM

Topic
Management

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

Corresponding Author
Nurdian Susilowati

Institutions
Faculty of Economics, Universitas Negeri Semarang

Abstract
This study aims to identify the activities and construct an internal control model of village funds management based on the Regulation of Ministry of Home Affairs No. 20 of 2018. The internal control model can be used to actualize good village governance. This study attempts to conduct in-depth interview to village officials and observation in Jambu District, Semarang. Based on the results of this study, the village funds management defines the activities as follows (a) preparing the budget plan based on the programs set in Village Government Budget (APBDes) proposed as development, government, empowerment, and social activities, (b) carrying out the activities, (c) accountability, and (d) evaluation. Further, the fundamental components of internal control are control environment as the integrity and the ethics of village officials, the leadership of village head, and the accountability. When village officials possess a strong integrity and ethics, frauds can be minimized. In the other hand, the financial statement is accountable. Besides, the democratic leadership of village head can increase the accountability and communication so that the policy can be implemented properly as the objectives proposed. Furthermore, it is important to explore the role of society in internal control system of village funds management.

Keywords
internal control, village funds management, good village governance

Topic
Accounting

Link: https://ifory.id/abstract/eLzyAm3GwgCN

Corresponding Author
Hasan Nuryadi

Institutions
Mercu Buana University

Abstract
ABSTRACT This study aims to analyze the effect of Transit Oriented Development (TOD) location, promotion, and company image on purchasing decisions. Apartmen Signature Park Grande, East Jakarta. The population in this study were consumers of Signature Park Grande Apartments. The sample used amounted to 100 consumers Signature Park Grande Apartments, calculated by Accidental Sampling (Convenience Sampling). The sampling method uses Non Probability Sampling. The method of collecting data uses the survey method, with the research instrument being a questionnaire. Data analysis method uses Partial Least Square (PLS). Research shows that the location of Transit Development (TOD) is not significant to purchasing decisions. Promotion has a significant effect on purchasing decisions. The companys image determines the significance of the purchasing decision.

Keywords
Location Based on Transit Oriented Development, Promotion, Company Image, Purchase Decision

Topic
Marketing Management

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

Corresponding Author
Ayla Danuwidjaja

Institutions
Universitas Pendidikan Indonesia

Abstract
The bond rating is one that investors should consider before investing in bonds. This is because the bond ratings provide a statement that provides the companys information so that investors avoid the risks of bonds. Therefore, it is necessary to re-examine the factors affecting the rating of bonds. The population of this study is a banking company listed on the Indonesia Stock Exchange (BEI) and listed in the rating of bonds issued by PT Pefindo from 2016-2018. The study population numbered 72 companies, then selected by purposive sampling method, to obtain the sample amounted to 9 companies. The data used is secondary data obtained from the Indonesian Stock Exchange (BEI) and PT PEFINDO, while data analysis using multiple regression analysis.

Keywords
Investments, Bonds, Bond Rating, Leverage, Profitability, Liquidity, Company Size, Age Bonds

Topic
Financial Management and Accounting

Link: https://ifory.id/abstract/wkL4UvcD2HGZ

Corresponding Author
Rini Triastuti

Institutions
UNS

Abstract
Promoting prosperity is one of the goals of the Indonesian Nation. In order for these objectives to be achieved, an effort needs to be made, namely through development in all lines. Village as a legal community unit has the authority in the field of village administration, village, community development, and empowerment of village communities which based on community initiatives, origin rights, and village customs. As an implementation of its authority, the village is given village funds. The government further regulates the priority of village funds use with the Village Ministers Regulation, Development of Disadvantaged Regions and Transmigration No. 19 of 2017 concerning Priority Determination of the Use of Village Funds in 2018. Article 4 paragraph 2 states that the priority for the use of village funds is prioritized to finance the implementation of programs and activities that are cross-sectoral in nature. These programs and activities include areas of superior village or rural area product activities, village owned enterprise or joint village owned enterprise in accordance with village authority. This paper is intended to describe the reasons villages have established a joint village-owned enterprises and the constraints they face. This research is located in Wonogiri, Malang and Kendal. Data collection is done by interviews and document studies. The results show that the establishment of joint village-owned enterprises is caused by regulations that regulate villages to carry out empowerment and the need to carry out the process of transforming government programs that have ended, the problem faced by them is that there are still no detailed provisions for joint village-owned enterprises which is the transformation of the PNPM program.

Keywords
autonomy, village owned enterprise , empowerment

Topic
Strategic Management, Entrepreneurship and Contemporary Issues

Link: https://ifory.id/abstract/Uh4xuCGZW3b6

Corresponding Author
Shota Takemura

Institutions
1- Department of Chemistry, Kwansei Gakuin University
2- Faculty of Engineering and Informatics, Universitas PGRI Semarang

Abstract
The position of the impurity level within the band gap is very important in optical materials. It can be estimated by calculating the charge transfer transition energy from the valence band to the impurity levels (Ligand to Metal Charge Transfer: LMCT). Recently, we successfully reproduced the LMCT energies and their experimental trend of transition metal (TM) ions in α-Al2O3 using the DVME method considering the configuration-dependent correction and the lattice relaxation based on the Shannons crystal radii. We also clarified that the LMCT energy is very sensitive to the bond length. In this work, in order to calculate the LMCT energies for various trivalent TM ions in α-Al2O3 using more accurate model clusters, we performed structural optimization using the CASTEP code and constructed the optimized TMO69- and TMAl13O630+ clusters (TM = Sc3+, Ti3+, V3+, Cr3+, Mn3+, Fe3+). As a result, the trend from Sc to V was reproduced better by calculations using the optimized clusters. The differences between the LMCT energies of the optimized clusters and those of the relaxed clusters based on the crystal radii originate from the multiplet splitting of the LMCT states.

Keywords
Charge transfer transition, Multiplet, Structural optimization

Topic
DV-Xa Method

Link: https://ifory.id/abstract/7EWU2qdL3pDm

Corresponding Author
Hayato Obata

Institutions
Department of Chemisry,Kwansei Gakuin University

Abstract
The 4f2-4f15d1 transition energies of Pr3+ in fluorides are utilized for various optical materials such as solid-state lasers, phosphors, and scintillators. Therefore, it is important to predict such energies of unknown materials for theoretical design of novel optical materials. In this study, we tried to predict the 4f2-4f15d1 transition energies of Pr3+ in fluorides based on first-principles calculations and machine learning. The first-principles calculations were performed based on the relativistic discrete variational multi-electron (DVME) method using the model clusters composed of the central Pr3+ and the anions closer than the nearest cation. Although the calculated 4f2-4f15d1 transition energies of Pr3+ in fluorides showed a relatively good correlation with the experimental ones, the theoretical values tend to be overestimated by ca. 2 eV. In order to improve the accuracy of the prediction, we used the calculated transition energies as an attribute for machine learning. As a result, the regression formula to predict the 4f2-4f15d1 transition energy of Pr3+ in fluorides has been derived by machine learning using the theoretical 4f2-4f15d1 transition energy as well as some other electronic and structural parameters as the attributes. The accuracy of the prediction was significantly improved compared to the simple first-principles calculations.

Keywords
The 4f2-4f15d1 transition energies of Pr3+ in fluorides,machine learning

Topic
DV-Xa Method

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

Corresponding Author
deviana soraya riu

Institutions
Obstetric and Gynecologic Department Staff of Hasanuddin University, Makassar, Indonesia

Abstract
Background: The prevalence of anemia all over the world is 51%. About 7-15% of newborns worldwide are born with a low birth weight per year. Because of the high prevalence of anemia throughout the world and complications that could arise as an effect of anemia both on the mother and fetus-like low birth weight, maternal anemia requires special attention. Objective: To evaluate the prevalence of anemia in pregnancy and determine the relationship between maternal anemia during pregnancy and low birth weight, babies. Method: This study is an analytical study with a cross-sectional design which was conducted at Siti Khadijah 1 Tertiary Hospital from January 2017 to October 2018. The total sample of the study was 6876 samples. Analysis of data was carried out using the available statistical package of SPSS-25 (Statistical Packages for the Social Sciences-version 25). For the correlation between variables, Spearman correlation was used. Result: Anemia prevalence was 46.6%. Mothers with anemia were more likely to give birth to babies with low birth weight compared to mothers who were not anemic, which is 373 respondents (11.7%) versus 265 respondents (7.2%). Respondents with severe anemia gave birth to more babies with low birth weight than babies with normal birth weight, which is 49 people (92.5%) versus 4 (7.5%). Grand multigravidity gave birth to more babies with low birth weight compared to other groups, which are 66 respondents (15.1%). From the results of the Spearman correlation test, the value of p <0.05. Conclusion: There was a significant correlation between maternal hemoglobin and birth weight

Keywords
Anemia, Pregnancy , Low Birth Weight

Topic
Maternal, neonatal and child health

Link: https://ifory.id/abstract/4g7WM26uCB8d

Corresponding Author
Fitri Amelia Ritonga

Institutions
a) Educational Technology, Postgraduate Program, Universitas Negeri Medan, North Sumatera, Indonesia
*fitriameliaaaa[at]gmail.com
b) Universitas Negeri Medan, North Sumatera, Indonesia

Abstract
This study aims to: (1) know the learning outcome of students in social science who are taught with problem based learning strategy and two stay two stray strategy, (2) know the social science learning outcome of students with cooperative and competitive social interaction (3) know the interaction between the learning strategies and the social interaction in affecting the learning outcome in social science. This research is a quasi-experimental study which involved 84 Junior High School students grade VIII in two different schools. The data was analyzed with descriptive statistics to describe the state of the data. The analysis requirements with Liliefors and Bartlett tests are fulfilled. The hypothesis testing uses ANOVA 2 ways. From the data analysis, it can be concluded that the appropriate instructional strategy used for students with cooperative social interaction is the problem based learning strategy while for students with competitive social interaction is two stay two stray strategy. The implication of this study is specificially for social science teachers, in which to implement the learning strategies, they have to watch the characteristics of students, especially their social interaction.

Keywords
instructional strategies, social interaction, learning outcome

Topic
Education and Research Global Issue

Link: https://ifory.id/abstract/2XuMhjwdy3z6

Corresponding Author
Ditta Manullang

Institutions
a) Education Management, State University of
Medan
Jalan Willem Iskandar Pasar V Medan Estate, Medan,
20221 INDONESIA
*ditta.manullang[at]kemdikbud.go.id
b) Education Management, State University Of
Medan
c) Education Management, State University Of
Medan

Abstract
The Education Policy for the Implementation of Inclusive Education is regulated in the National Education Ministers Regulations of Indonesia No. 70 of 2009, and the North Sumatra Governor Regulation No.29 of 2016 concerning the Implementation of Inclusive Education. However, in its implementation various problems arise, namely inclusive education for special needs children is not yet understood as an effort to improve the quality of education services, teacher competence is still unable to carry out learning for special needs children , unavailability of Special Advisory Teachers in inclusive education institutions, facilities and infrastructure what is available is not in accordance with the needs of the special needs children, so that the policy needs to be evaluated. This study aims to describe and discuss the achievements and factors of failure to achieve the implementation of policies for the implementation of inclusive education in early childhood institutions in the city of Medan. This research was conducted using descriptive research methods with a qualitative approach that emphasized the study of 6 (six) research indicators from William N. Dunn (2003: 429-438), namely effectiveness, efficiency, adequacy, similarity, responsiveness, and accuracy. Data collection was conducted through interviews with 18 informants consisting of 2 Education Department respondents, 4 Principal respondents from inclusion early childhood education institutions in Medan city, 8 teacher respondents from inclusion early childhood education institutions in the city of Medan , and 4 parents of respondents from special needs students in inclusion early childhood education institutions in Medan, with a purposive sampling technique. The results of this study indicate that the evaluation of the implementation of inclusive education policies in early childhood education institutions has not been well implemented, there are still some obstacles : there is no Special Advisory Teacher in inclusion early childhood education institutions, inadequate facilities and infrastructure to meet the special needs of children with special needs, the response of the Medan City Education Department is still in the form of socialization of inclusive education and monitoring to early childhood education institutions. Therefore, there is a need for good coordination and collaboration between relevant agencies in the Province of North Sumatra to better implement inclusive education.

Keywords
INCLUSIVE EDUCATION POLICY AT EARLY CHILDHOOD EDUCATION INSTITUTIONS

Topic
Educational Policy and Administration Education

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

Corresponding Author
Rosmaya Rosmaya

Institutions
a) Mathematic Education, Postgraduate Program, Lampung University, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia
*rosmaya1209[at]gmail.com
b) Department of Mathematics Education, Lampung University, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia

Abstract
Mathematical reflective thinking ability are one of the determinants of students success in solving mathematical problems. This descriptive research aims to figure out students reflective thinking ability at the two-variable linear equations system material. The subjects of this research were Junior High School students who were selected using purposive sampling. This research involves 92 students of the eighth grade of some State Junior High Schools in Bandar Lampung. The schools were SMP Negeri 4 that has a high category with 34 students, SMP Negeri 8 that has a medium category with 28 students, and SMP Negeri 22 with low category which is 30 students. The Data was taken through reflective thinking ability test which consists of 4 essays that involved 3 indicators of reflective thinking, namely reacting, comparing, and contemplating. In order to obtain a comprehensive description related to the ability of reflective thinking in students of SMP Negeri in Bandar Lampung, the data was qualitatively and quantitatively analysed. The result of the research shows that students reflective thinking ability are still not optimal with the average score far below the reflective thinking ability, which is 51,59. It can be seen from the majority of students who still get difficulties in building a deep self-understand of problem, inability to deliver what has been understood in a certain reason, as well as inability in concluding a proper answer.

Keywords
Reflective thinking

Topic
Mathematics Education

Link: https://ifory.id/abstract/ftzQPUr2HuvY

Corresponding Author
Eni Rahmawati

Institutions
Pediatric Nursing Department, Faculty of Health Science,Jenderal Soedirman University

Abstract
BACKGROUND: Neonatal jaundice is a clinical condition in infants characterized by yellow staining of the skin and sclera due to the accumulation of excess unconjugated bilirubin. This is the leading cause of death in life in 60% -80% of newborns. We aimed to investigate the effects of exercise on neonates with jaundice who were undergoing phototherapy. METHODS: In this quasi eksperimental study, through quota sampling, 34 full term neonates with jaundice admitted for phototherapy were selected. Subjects were assigned to exercise and control group. Exercise was offered by using baby oil about 15-20 minutes on extremities twice a day for 3 days and the control group did not received any exercise. Statistics analysis used independent t test and mann whitney test. Demographic and clinical characteristics, vital sign, the defecation frequency, total feeding amount and body weight collected and compared between two groups. RESULTS: On the third day, the exercise group showed significantly higher defecation frequency (p=0.000) and not significant for vital sign (heart rate p=0.583; temperature p=0.807; respiration rate p=0.029), enteral feeding (p=0.202) and body weight (p=0.181) compared with the control group. CONCLUSION: Exercise could help to increase defecation frequency in neonates receiving phototherapy for jaundice.

Keywords
hiperbilirubin, exercise, neonates, phototherapy

Topic
Nursing

Link: https://ifory.id/abstract/hx6ZQyKPjaXn

Corresponding Author
Sri Suhartini

Institutions
Department of Agro-industrial Technology, Faculty of Agricultural Technology, Universitas Brawijaya, Malang, Indonesia

Abstract
In global world, increasing needs of energy is parallel to the increase of population. The limitation of land availability and change of land use has turning the focus into marine biomass, especially macroalgae, as renewable energy feedstocks. Indonesia is one of the biggest countries producing marine macroalgae. The aim of this research was to evaluate the impact of washing pre-treatment on the characteristics of macroalgae and it biodegradability in anaerobic digestion process. In this study, a biochemical methane potential (BMP) test was carried out using fresh macroalgae, specifically Gracilaria verrucosa. The ratio of inoculum to substrate was 6:1 with operation temperature of 37 oC and incubated for 28 days. Prior the BMP test, the G. verrucosa samples were washed with flowing water for 30 minutes. The findings confirmed for washing pre-treatment was significantly enhance cumulative biogas and methane production by more than 50%. The specific methane potential (SMP) of washed G. verrucosa increased by six-fold, with the value of 0.108 m3 CH4 / kg VS. In this case, reduction of salinity concentration after washing may play an important role in increasing the anaerobic degradability. It was estimated that a high electricity potential is generated from anaerobic digestion of G. verrucosa after washing pre-treatment.

Keywords
anaerobic digestion; washing pre-treament; Gracilaria verrucosa; biodegradability

Topic
RENEWABLE ENERGY AND BIOREFINERY

Link: https://ifory.id/abstract/72PaLu6dqHDN

Corresponding Author
Akhmad Sukri

Institutions
(a) Department of Biology Education, Faculty of Mathematics and Natural Sciences, IKIP Mataram, Indonesia.
*akhmadsukri[at]ikipmataram.ac.id
(b) Department of Non-formal Education, Faculty of Education, IKIP Mataram, Indonesia
(c) Department of Educational Technology, Faculty of Education, IKIP Mataram, Indonesia
(d) Department of Biology Education, Faculty of Mathematics and Natural Sciences, IKIP Mataram, Indonesia
(e) Student Majoring in Biology Education, Faculty of Mathematics and Natural Sciences, IKIP Mataram, Indonesia

Abstract
The purpose of this study was to analyze the influence of the implementation of local primacy-based comic media on students conservation attitudes. This research was a quasi-experimental that adopted and modified the design of separate sample pretest-postest designs. Two experimental schools, namely SDN 1 Gili Indah and SDN Teratak, West Nusa Tenggara, Indonesia were taken purposively with a total of 52 students. Data on student conservation attitudes was collected through questionnaires. The data were converted into percentages then analyzed using the paired and independent sample t-test. The results of this research showed that there was an effect of the implementation of local primacy-based comic media to students-conservation attitudes. However, the geographical location of the school did not have an impact on students- conservation attitudes.

Keywords
Local primacy-based comic, conservation attitude

Topic
Biology Education

Link: https://ifory.id/abstract/9jNkATwJEYVD

Corresponding Author
MASOOD ABDUSALAM GHANEM ALI

Institutions
Department of Geology and Environment , Faculty of Sciences, Baniwaleed University, Libya

Abstract
The research assessed the potential of up flow anaerobic sludge blanket (UASB) reactors operated at very low up flow velocities to provide full-flow anaerobic treatment of low strength wastewater at low temperature 35 ⁰C. The work was carried out using laboratory-scale UASB reactors fed on a synthetic wastewater, which was designed to simulate a typical unsettled municipal wastewater. The reactors were operated under a range of condition to test their performance and stability based on four main indicators: chemical oxygen demand (COD) removal, total suspended solids (TSS) removal, gas production and gas composition. The results from this investigation showed that UASB reactors operated at a temperature of 35⁰C were highly effective in the treatment of synthetic sewage at influent COD concentrations from 450 to 2250 mg l-1 COD at a constant HRT of 1 day, and at HRT from 24 to 8 hours with an influent COD concentration of 450 mg l-1. The specific methane yield obtained was around 0.32 l CH4 g-1 COD removed. COD removal efficiencies were high at ≥ 93 % and total suspended solid removal was around 95 %. The results confirmed that full flow treatment under mesophilic conditions, without heating of the UASB reactor, was feasible at wastewater temperatures of 35 ⁰C. The warm temperate areas that are suited to this application, e.g. the tropical countries and Mediterranean region, also often have relatively low water use and/or high rates of re-use due to water scarcity.

Keywords
wastewater treatment

Topic
INDUSTRIAL BIOTECHNOLOGY AND BIOPROCESSING

Link: https://ifory.id/abstract/uw82a3kHZMKr

Corresponding Author
Nur Huda Sari

Institutions
a) Magister of Mathematics Education, Lampung University, Jl. Prof. Dr Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia
*nurhudasari0594[at]gmail.com
b) Department of Mathematics Education, Lampung University, Jl. Prof. Dr Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia
c) Department of Guidance and Counseling, Lampung University, Jl. Prof. Dr Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia

Abstract
The purpose of this study is to analyze students problem solving ability by using polya steps in linear program material. This was a descriptive study that used a qualitative approach with 103 students of XI grade at SMA Negeri 1 Kota Bumi as the subject of the study. The data was collected through the technique of a written test, which consisted of two questions. The result of the research showed that the ability of problem solving in students of grade XI in SMA Negeri 1 Kota Bumi was good, which were 17 students or 16,50% was very good at problem solving, 53 students or 51,47% was good at problem solving, 28 students or 27,18% was quite good at problem solving, and 5 students or 4,58% was not so good at problem solving. Moreover, the result of each indicator of problem solving ability was the indicator of understanding the problem was 87,86%, the indicator of arranging the plan was 45,99%, the indicator of implementing the plan was 39,31%, and the indicator of rechecking was 34,91%.

Keywords
Problem Solving Ability; Polya Steps; Linear Program Material

Topic
Mathematics Education

Link: https://ifory.id/abstract/EbzZhLBk9PvR

Corresponding Author
Dewi Ratih Ayu Daning Daning

Institutions
*Politeknik Pembangunan Pertanian Malang. Jl. Dr. Cipto 144 a Bedali, Lawang, 65200, Indonesia
†Faculty of Veterinary Medicine, Brawijaya University, Puncak Dieng Eksklusif, Malang 65151, East Java, Indonesia

Abstract
The managements of animal production, including animal transport and slaughtering, are the essential parameters of animal welfare. Nevertheless, the differences of region, cultural, social, religion, and political dimensions could might affect the animal welfare assessment. Nowadays, animal welfare system is getting more pay attention and has been an important priority of the World Organization for Animal Health (OIE) for over a decade. For example, developing country such as Indonesia, has been applied the animal welfare standard for dairy cows, in order to standardize the assessment for animal health and good quality of the milk. Furthermore, the measurement to achieve the representative welfare assessment are scored according to a three–point scale, ranging from 0 – 2 for each animals. More details, 0 means good welfare, 1 is awarded for some compromise on welfare, and 2 is poor and unacceptable welfare. Hereinafter, these assessments of animal welfare standard are importantly used to support the appropriate feeding, good health, standardized housing, and fine behavior for dairy cow farms. Our data concluded that, Indonesia farmers who had the small total number of animals, around 3-5 dairy cows, having score 1 of the animal welfare assessments.

Keywords
dairy farm, good feeding, good health, good housing, appropriate behavior

Topic
ANIMAL WELFARE AND TECHNOLOGY

Link: https://ifory.id/abstract/6XepCFaK8A3L

Corresponding Author
ELISABETH PRATIDHINA

Institutions
Physics Education Study Program, Widya Mandala Catholic University Surabaya

Abstract
Fast development of technology has significant impacts on people-s lifestyle, smartphone is one of the examples. In the past time, mobile phone is mainly used only for communication, however present smartphone can be used for various purposes. Moreover, in most smartphone, the features can be added by installing new supported program. Smartphone is also popular among high school students in Indonesia. That makes smartphone is potential to be used in education, including in learning physics. Smartphone app has some advantages for physics learning platform such as it has high interactivity, it provides more attractive illustration, it is easy to be brought everywhere and so on. In this study, we develop a smartphone app to help high school students in learning rectilinear motion. The smartphone app includes simulation, material, video-animation, and quiz. The use of smartphone app in the learning process is expected to improve students- conceptual understanding and learning independence

Keywords
smartphone app, high-school physics, rectilinear motion

Topic
Physics Education

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

Corresponding Author
Siti Asmaul Mustaniroh

Institutions
(a) Department of Agroindustrial Technology and Reseach Group of Creative Agroindustry , Faculty of Agrotechnology, Universitas Brawijaya, Jalan Veteran, Malang 65145; asmaul_m[at]yahoo.com

(b) Research Team in Reseach Group of Creative Agroindustry, Faculty of Agrotechnology, Universitas Brawijaya,

(c) Department of Agroindustrial Technology, Faculty of Agrotechnology, Universitas Brawijaya

Abstract
Lembah Hijau is one of the SMEs which produces corn chips in Lamongan District. This SME cooperates with corn farmer and retailer who joined the supply chain of corn chips. The uncertainty of the maize cropping pattern, the production process that depends on weather conditions, and the demand for fluctuating corn chips are the factors that can trigger a variety of risks. The research objective was to identify and assessment for the risk of corn chips- supply chain in Lembah Hijau to mitigate the risk. The method used to assess the risk is Fuzzy FMEA by using the questionnaires which were filled by five expert respondents. The raw material, production process and marketing are the variables that will be reviewed. The results showed that by identifying the risk of corn chip chips supply chain, 14 risks consisting of 3 risks in the raw material variable, 6 risks in the production process variable and 5 risks in the marketing variables were found. The risk that can be known based on the highest FRPN value in the raw material variable is the fluctuation of corn price. Meanwhile, the risk in the production process variable is the weather conditions that do not support the production process and the risk in the marketing variable is the return of corn chips product.

Keywords
Corn Chips, Risk Assessment, Supply Chain

Topic
AGROINDUSTRIAL PRODUCTION SYSTEM MANAGEMENT AND REGULATION

Link: https://ifory.id/abstract/w4FjGDanTRfB

Corresponding Author
ELISABETH PRATIDHINA

Institutions
Physics Education Study Program, Widya Mandala Catholic University Surabaya

Abstract
Smartphone is example of communication technology evolution. At the past time, phone is only used for communication purpose, however nowadays smartphone functions are various. Although still limited, application of smartphone in high school physics is very potential. For physics learning platform, smartphone has some advantages such as it allows physics interactive illustration, it allows students to study anywhere and everywhere, it provides self-evaluation for students, and so on. In this research, we develop smartphone app as learning resource on circular motion topics. Circular motion is phenomenon that closely related to our daily life, however there are some physics quantities which need more visualization, as example is the distinction between linear speed and angular speed. This study aims to develop smartphone app which can improve high school students- conceptual understanding on circular motion. The app includes material, physics animation, exercise, and quiz.

Keywords
smartphone app, high-school physics, circular motion

Topic
Physics Education

Link: https://ifory.id/abstract/fhPcXFjnQtY6

Corresponding Author
Pauline Nathania Novitasari

Institutions
a) Department of Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Brawijaya Jl. Veteran, Malang 65145, Indonesia
*Email:agustinwardani[at]ub.ac.id
b) Department of Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Brawijaya Jl. Veteran, Malang 65145, Indonesia

Abstract
Cellulases are a group of hydrolytic enzymes capable of hydrolyzing the cellulose to smaller sugar components produced by microorganisms during their growth. In this study, cellulose- degrading microorganism was isolated for obtaining effective cellulases from lignocellulosic biomass such as sugarcane bagasse and oil palm trunk waste from plantation area in Indonesia. A total of 194 strains were isolated on agar plates containing carboxymethyl cellulase (CMC). Of the 194 strains, 57 showed hydrolyzing zones on agar plates containing CMC after Congo-red staining. Cellulase assay kit (CellG5 method) was used to measure the enzyme activity of the obtained isolates. Two isolates among the 57 strains i.e. KS 30 and AT 17 showed higher carboxymethyl cellulase (CMCase) activity and isolate KS 30 exhibited the highest CMCase activity (1.891 Unit/mL). The strain KS-30 was identified as Bacillus subtilis on the basis of 16S rRNA gene sequence analysis. This study provided information about the prospect of cellulose-degrading Bacillus subtilis for the bioconversion of lignocellulosic biomass to produce value-added bioproducts such as ethanol, organic acids and other chemicals.

Keywords
Bagasse, Oil Palm Trunk, Cellulase, Isolation, Identification

Topic
INDUSTRIAL BIOTECHNOLOGY AND BIOPROCESSING

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

Corresponding Author
ELISABETH PRATIDHINA

Institutions
Physics Education Study Program, Widya Mandala Catholic University Surabaya

Abstract
Parabolic motion is one of physics phenomenon which is included in high school physics. Conceptually it can be considered as a combination between motion with constant speed in horizontal direction and motion with constant acceleration in vertical direction. Although the parabolic motion phenomenon can be observed easily in real life, students still face difficulties to describe parabolic motion as combination of two kinds of motion and to determine the quantities related to parabolic motion. In this study, we developed a smartphone app as learning resource to help students in learning about parabolic motion. Smartphone app can provide more physics visualization which may help students to describe and understand the concept of parabolic motion qualitatively and quantitatively. Moreover, students can learn with smartphone app wherever and whenever they want, it is more flexible compared to traditional book. The developed smartphone app provides material, video-animation, exercise and quiz.

Keywords
smartphone app, learning resource, parabolic motion, high-school physics

Topic
Physics Education

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

Corresponding Author
Adang Effendi

Institutions
1Departemen Pendidikan Matematika, Universitas Galuh, Jl. R.E Martadinata No. 150 Ciamis 46274 Jawa Barat, Indonesia

*adangeffendi72[at]gmail.com

Abstract
This study aims to describe the importance of increasing mathematical higher order thinking abilities of high school students through creative problem solving and direct learning. This research is a quasi-experiment with the design of a non-equivalent control-group in a senior high school in Ciamis, Indonesia. The results showed that the comparison of the improvement in students mathematical higher-order thinking abilities through learning creative problem solving was better than students with direct learning. The advantage is that students who learn creative problem solving tend to express opinions openly so that many ideas emerge to choose effective solutions.

Keywords
mathematical higher order thinking abilities, creative problem solving

Topic
Mathematics Education

Link: https://ifory.id/abstract/yTFtxB29cdWN

Corresponding Author
Ervina Ervina

Institutions
a) Sekolah Pascasarjana, Program Studi Pendidikan Biologi, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia
*ervina[at]upi.edu
b) Departemen Pendidikan Biologi, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
c) Departemen Pendidikan IPA, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
This study aims to compared virtual lab with real lab. The experimental research design was used in this study. Compared two different treatments in the experiment testing the protein content in food materials. This study resulted in differences in results between laboratory trials by virtual lab procedures with virtual labs. This research was also conducted on real laboratories that produce differences (1) facts showed in virtual laboratories and real laboratories, (2) the process of changes that occur in experiments. The virtual lab can-t present all objects/event that appears in the real lab. In conclusion the real lab more potential to appeared concrete and relevant facts than virtual lab

Keywords
VLab; Real Lab;

Topic
Biology Education

Link: https://ifory.id/abstract/W43KQgLveuCM

Corresponding Author
Judyanto Sirait

Institutions
University of Leicester

Abstract
Force diagrams, or some say free body diagrams (FBDs), as physics representations, are usually employed to teach and learn physics concepts such as force. Physics education studies indicate that the use of FBDs can support or hinder student- performance in solving physics problems. This study aims to investigate the type of representations drawn by students and the patterns of students- response while solving force problems. By involving physics education students (preservice teachers), questions about the application of Newton-s laws were administered to students to elicit the patterns of students- diagrams and students- answers. Results were analysed into three categories: complete, incomplete, and miscellaneous force diagrams. In addition, some students did not draw diagrams in solving the problems. Based on students- answers, the percentage of students drawing incomplete diagrams is higher than drawing complete diagrams. Students who drew complete diagrams tend to obtain correct final answer. Some students who drew incomplete diagrams were not able to find the correct answers and even to finish the problem. The group of students whose drew diagrams were in the miscellaneous category tended to demonstrate incorrect and unfinished answers.

Keywords
Representations, Force Diagrams, Problem Solving

Topic
Physics Education

Link: https://ifory.id/abstract/j8yHx6CtMBXq

Corresponding Author
RESY NIRAWATI

Institutions
1STKIP Singkawang, Jl. STKIP Kelurahan Naram Singkawang, Kalimantan Barat 79251, Indonesia
2Departemen Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
2Departemen Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
2UIN Sultan Syarif Kasim Riau, Jl.HR.Soebrantas Panam Km.15 No.155,Tuah Madani, Kec Tampan,Kabupaten Kampar, Riau 28293, Indonesia
2Sekolah Tinggi Ilmu Ekonomi (STISE) Cipasung Tasik Malaya, Jl. Ciawi Singaparna,Tasik Malaya,Cilampung Hilir,Pada Kembang,Jawa Barat 46466, Indonesia

Abstract
This research was conducted to see whether the variation of the solution is acceptable and easy to understand by students with different levels of ability so that it can be seen the difference of students abilities in facilitating the quadratic form in the upper, middle and lower groups. This research used the experimental method with factorial design. Based on the result of the final test analysis, there were differences of students abilities in the upper group, the medium group, and lower group in putting quadratic form based on the use certain various solution.

Keywords
Representation; various solutions

Topic
Mathematics Education

Link: https://ifory.id/abstract/2wQb9N3ZAhpf

Corresponding Author
Intan Setiawati

Institutions
Program Studi Pengembangan Kurikulum, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia

Abstract
The aim of this research is to get the depiction of the ability of science teachers in planning and carrying out 4C (critical, creative, collaborative and communication) skills-oriented science teaching. The research method used is quantitative descriptive. The subjects of the research were 12 science teachers (7 female and 5 male) from several junior high schools in West Bandung district of West Java province. The instrument used for data collection is the teaching plan assessment rubric and the assessment rubric of real teaching that was adapted from the assessment rubric used for the performance test of the teacher profession program. Data analysis was carried out by reviewing; gender, teaching experience and teacher education background. The results showed that: 1) most of science teachers who were the subjects of the research had low ability to plan and implement of 4C skills-oriented science teaching, 2) there was no gender bias, no teaching experience bias and no teachers educational background bias in the ability to planing and carrying out of 4C-oriented science teaching. The low ability of the science teachers indicates the need to increase teacher competency through relevant training programs.

Keywords
science teaching, junior high school, 4C-skills

Topic
Science Education

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

Corresponding Author
Muh Khaedir Lutfi

Institutions
a) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*khaedir.mkl[at]upi.edu
b) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
One of the mathematical topics that must be mastered by students is geometry. Geometry requires students to think analytically and spatially so they must have good spatial abilities. Each student has different spatial abilities in learning geometry. Several previous studies relating to spatial ability are about differences in students- spatial abilities based on gender. However, almost no research can be found on the students-s spatial abilities based on level of geometrical thinking. This condition raises research questions about description of students-s spatial abilities based on Van Hieles level of geometrical thinking. Therefore this study aims to identify students-s spatial abilities based on Van Hieles level of geometrical thinking. To answer the research question, we gave a written test to 25 grade IX students in one of junior high school in Bandung. Then, we conducted interviews to 3 upper group students and 3 lower group students. Data analysis was done by triangulation method. The results of this study indicated that there are variations in differences in each indicator of spatial ability based on the level of Van Hieles geometrical thinking. In the spatial perception, mental rotation, and spatial orientation, the maximum level achieved by students is level 2, namely 11, 5, and 3 students, respectively. Meanwhile the indicator of visualization and spatial relation, the maximum level achieved by students are level 1, namely 16 and 15 students, respectively.

Keywords
Geometry; Spatial ability; Level of Van Hieles Geometrical Thinking

Topic
Mathematics Education

Link: https://ifory.id/abstract/xh3wApNXfErQ

Corresponding Author
Tatan Tawami

Institutions
English Department, Universitas Komputer Indonesia
tatan.tawami[at]email.unikom.ac.id
English Department, Universitas Padjadjaran
susi.yuliawati[at]unpad.ac.id

Abstract
This paper investigates steps in which abstrak of paper may be well translated into abstract using particular computer aided tool. In analysing the steps mentioned, narrative-descriptive method is implemented in order to specify the sequence of the steps. In the process, it turned out that there were at least 6 steps to perform in order to create a well translated abstrak into abstract. Five steps can be done in order to create one well-translated abstrak. Each steps requires systematic analysis in order to achieve correct and accurate translation. Finishing the steps mean the translated abstrak may require further action in order to achieve best result. By performing these systematic and step by step sequences, the abstrak can express your best thought, additionally, the steps can even be extended to the entire paper to achieve the accurate translation.

Keywords
abstrak, translation, computer-aided tool.

Topic
Digital Humanities

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

Corresponding Author
Cut Irna Setiawati

Institutions
(a*), (b) Business Administration, Telkom University
Jl. Telekomunikasi No. 1, Kota Bandung
*irnacut[at]telkomuniversity.ac.id

Abstract
Electronic money or electronic money (E-Money) is money used in internet transactions by electronic means. One of the largest telecommunication provider in Indonesia, named Telkomsel, produced Link Aja (LA) as a micro pay tool. The use of LA itself has been going on since November 2007. But found in an article that states of the many users of LA is only a small number of users who are actively using LA. The purpose of this study is to determine the factors that determine users to become less active of LA among the users in the city of Bandung in 2018. This study uses quantitative methods with descriptive and exploration research types. Techniques of collecting data spread the questionnaire to users who have account but less active in using LA. This study uses non-probability sampling method that is saturated sampling around 105 respondents. Data analysis technique is Factoring Analysis. The results showed that there are 6 factors which caused the decreasing of user activity in transactions using in Bandung (2018). As the results, this research found there are six factors consist of: (1) Security and Limited Discount, (2) Explicit fees, (3) Machine and Update System, (4) Network, (5) Confuse Term and Condition, and (6) Disadvantage of Time and Popularity. The provider should recovery these factors in offering better products and e-money services for users.

Keywords
Cashless; Determinant; Factoring Analysis

Topic
Management

Link: https://ifory.id/abstract/c8kNxzVunFTK