Indonesia Conference Directory

Corresponding Author
Mohammad Abdullah

Institutions
The Markfield Institute of Higher Education

Abstract
Though poverty is a global phenomenon, its concentration in India is greater than any other country. According to World Bank data, almost 30% of the world-s extreme poor were living in India in 2011. As a religious group, Muslims in India are trapped in the incidence of poverty more than other communities except Buddhists. In aggregate terms, one in every three Muslims lives below poverty line in India. Muslims in India are the second largest majority after Hindus. The data on the socio-economic status of Muslims reveals that the community lags behind Hindus in almost all areas including education, government jobs and financial inclusion. Poverty is one of the main reasons for the pathetic condition of the community in the country. As per the available data, 21.7 % of Muslims living in rural areas are in poverty. The incident of poverty is more acute among the Muslims living in urban areas, as the percentage of poor Muslims in urban areas stands at a staggering 33.7%. The average of combined Muslim population below poverty line in rural and urban areas stood at 25.8% by 2009-2010. As a whole, along with being the second largest majority in India, Muslims also constitute the second largest religious group in poverty after Buddhists. This abject condition of the community can be remedied to a great extent if along with other governmental policies, the resources of Waqf (Islamic charitable endowments) are deployed properly with the objective of poverty mitigation in the community. India hosts a massive size and amount of Waqf. There are approximately 4.9 lakh (490,000) registered Waqf properties in the country. The total area that Waqf properties of the country cover is more than six hundred thousand acres. The current market value of all Waqf properties in the country are estimated to be worth more than 1.2 trillion Indian Rupees. According to the some estimates if these properties are put to efficient and marketable use they can generate at least a minimum return of ten per cent. Thus, the role of Waqf institution can be critically important in reducing the poverty of particularly Muslim community. However, partially due to lack of a robust governance structure and also due to rigidity of approach and misapplication, the institution of Waqf remains either static or unresponsive towards the poverty of the community. This paper examines the potential relationship of Waqf and poverty reduction among the Indian Muslims followed by a critical analysis of the religious as well as legal governance structures of Waqf. The paper finds that the rate of poverty among the Muslims in India can be substantially reduced if the available resources of Waqf are deployed through proper planning and with efficiency. The paper is based on qualitative research paradigm and it adopts socio-legal research methodology for the analysis of the available literature. The paper concludes with some critical policy recommendations which may help to provide a road-map for t

Keywords
Poverty, Endowment, Waqf, Philanthropy, Governance, Charity, Socio-economic Empowerment.

Topic
Islamic Governance and Ethics

Link: https://ifory.id/abstract/XV9YU26TJeGb

Corresponding Author
hussein siti

Institutions
a) Nursing Department, Faculty of Medicine, Universiti Kebangsaan Malaysia (UKM), Jalan Yaakob Latif, Bandar Tun Razak, 56000, Cheras Kuala Lumpur, Malaysia.
*zuhaida_hussein[at]ukm.edu.my
b) Community Health Department, Faculty of Medicine UKM, Malaysia

Abstract
Background: The life at the older ages are known to be very challenging and mostly influenced by the aging process and negative changes such as retirement, loss of a significant others and living alone. These changes had an effect which increase the risk of loneliness and at the same time lowered the level of quality of life in the older adult. There are evidences showing the loneliness is the root cause of deterioration of health status in the older adult. Methods: This is a mixed method study with descriptive cross sectional community survey was conducted among 380 older adult in Johore, Malaysia followed by in-depth interview among eight respondents. Data were collected using the short form of Social and Emotional Loneliness Scale for Adults (SELSA-S). Results: The results revealed that 37.2% respondents had loneliness. Marital status was significantly associated with loneliness (OR = 2.85, 95% CI: 1.35 - 6.00; p = 0.01). Meanwhile, two main themes were recorded as causes of loneliness among the older adult highly associated with changing the lifestyle and ineffective communications. Conclusion: There are various factors that almost inevitable that could increase risk of older adult to experiences loneliness.

Keywords
loneliness, older adult.

Topic
Nursing

Link: https://ifory.id/abstract/9Yy2vNKhEZcp

Corresponding Author
Ayda Krisnawati

Institutions
Indonesian Legumes and Tuber Crops Research Institute

Abstract
The army worm, Spodoptera litura, is the major leaf feeding-pest of soybean in Indonesia. The aim of the study was to identify the resistance of soybean genotypes to the army worm based on the preference index. A total of 150 soybean genotypes were grown under field condition from February to May 2018 in Malang (East Java, Indonesia). The preference test was conducted in the laboratory, and using G100H as resistant check to army worm. The result showed that the preference index of 150 genotypes was ranged from 0.09-1.82. A total of 105 genotypes were less preferred by larvae of S. litura (resistant), 39 genotypes were more preferred by larvae of S. litura (susceptible), and a genotype has equal resistant with G100H. Based on the preference index and morphophysiological characters, 150 soybean genotypes can be grouped into eight clusters. A genotype (Anjasmoro/Rajabasa-41) has characteristics of low leaf moisture content, dense leaf trichomes, and the preference index of 0.14. Those characters could be the attributes of the soybean genotypes resistant to S. litura. The Anjasmoro/Rajabasa-41 has the opportunity to be developed in tropical regions of Indonesia or can be used as a source of resistance genes to S. litura.

Keywords
leaf feeding-pest, preference index, resistant

Topic
FOOD SAFETY AND SECURITY

Link: https://ifory.id/abstract/LhFXek7E6BxC

Corresponding Author
Nicholle Clarivania Tanaka

Institutions
Department of Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Brawijaya
Jalan Veteran, Malang 65145, Indonesia
*agustinwardani[at]ub.ac.id

Abstract
The barrier to realizing the potential of lignocellulosic bioethanol is the recalcitrance of cellulosic biomass. Overcoming this biomass recalcitrance is the key challenge to large scale production of lignocellulosic bioethanol. Pretreatment is an important and critical step that enables enzyme hydrolysis of lignocellulose conversion to ethanol. Finding a pretreatment method for reducing the high recalcitrance via cost-effective pretreatment methods would therefore be of great benefit. This study aims at investigating the effect of pretreatment on delignification process of sugarcane bagasse and palm oil trunk. Two methods of pretreatment were compared i.e. alkaline hydrogen peroxide pretreatment (1% and 5% H2O2) and subcritical water pretreatment (170oC, 2.2 MPa) for the effectiveness of reducing the lignin content. Scanning Electron Microscopy (SEM) analysis was also performed to investigate the effect of pretreatment on structure profile of lignocellulosic biomass. It was observed that alkaline hydrogen peroxide pretreatment gave better results than subcritical water pretreatment based on the lignin content for both lignocellulosic biomass. Pretreated sugarcane bagasse presented lower lignin content than pretreated palm oil trunk. Lignin was successfully removed until 56.99% under the best condition of 5% of alkaline hydrogen peroxide, at 28oC for 72 h incubation. This study confirmed that alkaline pretreatment was found have a better method for the conversion of lignocellulosic materials. Furthermore, sugarcane bagasse has a greater potency as basic raw materials used for the bioethanol production than palm oil trunk because it has lower content of lignin with higher content of cellulose.

Keywords
Bioethanol, Lignocellulosic Biomass, Pretreatment, Alkaline Hydrogen Peroxide, Subcritical Water

Topic
INDUSTRIAL BIOTECHNOLOGY AND BIOPROCESSING

Link: https://ifory.id/abstract/m9P7yWq2ZkuX

Corresponding Author
Elvi Liana

Institutions
a) Department of Agricultural Engineering, Faculty of Agricultural Technology, Universitas Brawijaya, Malang, Indonesia
b) Department of Agro-industrial Technology, Faculty of Agricultural Technology, Universitas Brawijaya, Malang, Indonesia
*ssuhartini[at]ub.ac.id

Abstract
Globally, disposable baby diapers demand continues to grow alongside with an increase in the birth rate and child (aged 0-3) population. On average, diapers consumption is around 6-8 pieces per baby, giving approximately 6,300 diapers for the next 2.5 years. Furthermore, each diaper contains 35% of organic and 65% of inorganics materials. The presences of inorganics materials pose a detrimental effect on the environment as it needs around 500-800 year to breakdown or degrade. This study was aimed to enhance the valorisation of disposable baby diapers waste by implementing sterilisation technology. The technology was based on a double jacket and centrifugal speed principles, enabling to effectively and safely sterilise the diapers wastes. The comparison with the conventional technology was carried out based on the following parameters: total number of E. coli, Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), turbidity, pH, temperature, and economic analysis. The results indicated that the proposed sterilisation technology has superior performance that conventional sterilisation technology. The findings also confirmed that the sterilised diapers waste can be further reused for making other valuable products, such as eco-friendly handy craft or souvenirs. Economically, the implementation of the proposed technology can support the creation of green creative industries, particularly in Indonesia.

Keywords
disposable baby diapers; sterilisation technology; double jacket concept; centrifugal speed principle; green creative industries

Topic
WASTE AND ENVIRONMENTAL MANAGEMENT

Link: https://ifory.id/abstract/jwENx7UAzKBt

Corresponding Author
Hilarius Jago Duda

Institutions
STKIP Persada Khatulistiwa, Sintang, West Kalimantan
Jl. Pertamina-Sengkuang KM.04

Abstract
Fermentation is one of the technologies in biotechnology to produce biotech products that are rich in nutritional content and have better quality. Survey data shows that students responding to biotechnology courses are one of the subjects that are difficult to understand and difficult to practice. Therefore, researchers tried to analyze the misconceptions that occured in students who had studied biotechnology courses on the concepts of fermentation technology and fermentation products. The research approach is qualitative with the research method used is decriptive. The study population was students of Biology Education STKIP Persada Khatulistiwa Sintang and the samples used were 36 students who has studied biotechnology. The technique of collecting data with diagnostic tests in the form of multiple choices and interviews. Analyze data using Certainty Of Response Index (CRI) and descriptive. The results of the research obtained are misconceptions on the concept of 34.44% fermentation technology and the concept of fermentation products by 34%. From these data it is known that quite a number of Biology Education students experience misconceptions.

Keywords
misconception, fermentation, students, Indonesia

Topic
Biology Education

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

Corresponding Author
Siti Ooy Rukoyah

Institutions
Biology Education Magister Program, Universitas Pendidikan Indonesia

Abstract
This study aims to explore the readiness of teachers in implementing STEM learning. This was motivated by the fact that schools need to provide teachers who are able to develop learning based on Science, Technology, Engineering and Mathematics (STEM). The research method used was descriptive qualitative research involving each of the 16 teachers in the Lesson Study (LS) and STEM training program and the instrument used a questionnaire given to each teacher. This study shows that there are similarities and differences between each group with the factors that influence it. In the aspect of relevance, it was found that the two groups belonged to the very prepared category. The self-efficacy aspect of the STEM training program is better than LS. Whereas in the aspect of anxiety LS is more prepared than the STEM Training group. This is influenced by the fact that the two groups are actively involved in influencing their views on STEM teaching, the STEM training program gets more collaborative learning training and knows the many obstacles in the process of implementing learning.

Keywords
STEM, Perceived Relevance, Self Efficacy, Anxiety

Topic
STEM Education

Link: https://ifory.id/abstract/kd7wxeU3aj8f

Corresponding Author
Wulansary Kartika Hayati Wahyono Putri

Institutions
Program Studi Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

*wulansary.k[at]student.upi.edu

Abstract
This research was implemented to students from the 4th grade and 7th grade in one of elementary and junior high schools around Bandung city. The initial problem that became a background of this research was the difference ability and learning experience of elementary and junior high school students when learning the area of triangle concept. So that the learning carried out should also be different according to the needs of students. The focus on this research was to develop the Hyphotetical Learning Trajectory (HLT) that is appropriate for the needs of elementary and junior high school students based on the results of teacher and students interview and learning observation. This research used the qualitative method in the form of a didactical design research through three phases of analysis that are prospective analysis, metapedadidactic analysis, and retrospective analysis, with the triangulation technique for collecting data. Based on the results and discussion of research, the learning trajectory for elementary students is concluding the triangle area formula based on concrete activities, while for junior high school students is proving the formula of the triangle area and applying it in more complex problems.

Keywords
Learning situation; the area of triangle; learning trajectory; elementary school; junior high school

Topic
Mathematics Education

Link: https://ifory.id/abstract/XQwA4YzWVFBx

Corresponding Author
Wulansary Kartika Hayati Wahyono Putri

Institutions
Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

*wulansary.k[at]student.upi.edu

Abstract
This research was implemented to students from the 10th grade in one of high schools in Bandung city. The initial problem that became a background of this research was the existence of the learning obstacles which causes students less optimal in learning the concept of the distance in three dimensional shape so that learning becomes meaningless. The focus on this research was to develop a didactical design of the distance from a point and a line that constructed by considering the learning trajectory and the learning obstacles that have been found. This research used the qualitative method in the form of a didactical design research through three phases of the analysis that are prospective analysis, metapedadidactic analysis, and retrospective analysis, with the triangulation technique for collecting data. Based on the results and discussion of research, the didactical design that has been made is capable to overcome some learning obstacles. So, this design can be one of the recommendations on learning the concept of the distance in the geometry.

Keywords
Didactical design; distance between a point and a line; three dimensional shape; learning trajectory; learning obstacles

Topic
Mathematics Education

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

Corresponding Author
Adeh Ratna Komala

Institutions
Universitas Komputer Indonesia

Abstract
Regional Organization (RO) in implementing the budgeting system has not yet integrated the system. The budget is one of the government finances that must be managed properly where the funds collected must be budgeted properly. The purpose of this study was to find out the implementation of e-budgeting in the city of Bandung and find out the effect of e-budgeting on the quality of information. The study was conducted on seven (7) Regional Organization by distributing questionnaires to the program and financial sections of 21 respondents . The data processing is done using multiple regression. The results of the study indicate that the Bandung Regional Organization have implemented e-budgeting. However, users do not feel helped by e-budgeting . Besides that, e-budgeting has not been well integrated. There is the influence of e-budgeting on the quality of information on Regional Organization in the city of Bandung.

Keywords
e-budgeting, information quality, Regional Organization

Topic
Accounting

Link: https://ifory.id/abstract/Vujx9NUfw37v

Corresponding Author
Dewi Cahyani

Institutions
1Departement Biology Teaching, State Islamic Institute of Syekh Nurjati Cirebon, Jl. Perjuangan By Pass Sunyaragi, Cirebon 45135, Indonesia
2Departement of Environment Manajement, State Universitas of Jakarta, Jl. Rawamangun Muka, Jakarta Timur 13220, Indonesia

Abstract
Abstract. In the management of coastal areas of Subang regency, many problems are often encountered such as fishpond pollution, physical degradation and beach abrasion. A development model is possibly needed to create a sustainable system for the area. The objectives of this research are to study the situation and to make a model of the coastal area management. The method used in this research is This research used descriptive qualitative approach done through literature study (desk work) and field study (field work), with research mix method (integrating qualitative and quantitative methods) and then for the added management model based on water quality used Research and Development (R&D) with the steps of field study, identification of the problem, purpose of the research, finding the solution of the problem and the modelling by chart. The result of the research indicates that the quality of water through the utilization of natural resource along the coastal area with regard to the brackish water is still tolerable and potentially productive. The outcome of this model is suggested to be applied in further research of brackish water fishery productivity.

Keywords
Model of utilization;Coastal area resources in Water-Quality; Management of Aquaculture

Topic
Science Education

Link: https://ifory.id/abstract/j9eaGNDhrqLm

Corresponding Author
Riny Handayani

Institutions
Department of Public Administration, Faculty of Social and Political Sciences
Sultan Ageng Tirtayasa University

Abstract
Population aspects functionally form a unity of regional ecosystems, therefore information on population development is strategic information and is needed for planning development policies that are population-oriented and sustainable. Population problems, especially those related to increasing the quantity of population in Banten Province, have become one of the strategic issues recorded in the Banten Province Medium-Term Development Plan (RPJMD) for the period 2017-2022, another strategic issue regarding population growth in the RPJMD not yet increased use of Contraception Tools, Lack of new FP Participants, Increased population migration between provinces and between regencies / cities residents of 5 years and above. The purpose of making population quantity mapping is to make a description of the data that has been obtained and display in the form of simple statistics so that people can more easily get a picture of the situation of the quantity of population in the Banten Province. The population quantity variables analyzed were Population Growth Rate (LPP), Population Density, Population Composition, Birth Rate, and Birth Rate by Age. Since the formation of Banten Province in 2000, in general all regions in Banten Province experienced a decrease in the amount of LPP. Exceptions occurred in South Tangerang City, the population increased by 51.22%, population density increased by 40%, the composition of the most dominant population was the age group 0-4 and 5-9 years, a significant change for Sex Ratio, reduction in birth rates and numerical parameters births in the 15-19 year age group received special attention because in this age group the proxy for prenatal early marriage at the age of adolescents in Banten Province.

Keywords
Mapping, Population Quantity

Topic
Sustainable Development Goals

Link: https://ifory.id/abstract/dKcnEgYRBvb7

Corresponding Author
Hastri Rosiyanti

Institutions
a) Program Studi Pendidikan Matematika, Universitas Muhamamdiyah Jakarta, Jl. KH. Ahmad Dahlan, 15419 Jakarta Selatan, Indonesia
*hastrirosiyanti[at]gmail.com
b) Program Studi Matematika, Universitas Bina Nusantara, Jl. K H. Syahdan No. 9, Jakarta Barat 11480, Indonesia

Abstract
The purpose of this study was to analyse and describe refractive thinking skills in solving mathematical problems in terms of thinking styles.This study uses qualitative with descriptive research types.The research subjects is the fourth semester mathematics education students.The data collection technique used is written tests and interviews.The results of the study is the students who have the style of thinking Abstract Sequential can only see information contained in questions, but cannot analyse the information.Hence , the determination of solving problem strategy is very inappropriate.The results is solution of the problems was not exactly right.Students who have a style of thinking Concrete Sequential can analyse the information contained the question, but in determining the solving strategy is not appropriate, therefore the answer of the problem is not right.Students who have the style of thinking Random Abstract can collect the information with their own editorial.They only wrote their strategy generally but can not wrote down gradually.Hence, the planned strategy and solution not yet seen in detail.Students who have an Random Concrete style of thinking can gather the information contained in the problem, able to determine a problem solving strategy and the right solution.

Keywords
Refractive Thinking, Solving Mathematical problems, Thinking Styles

Topic
Mathematics Education

Link: https://ifory.id/abstract/XLgpu3aVCUtW

Corresponding Author
Sariwulan Diana

Institutions
Departemen Pendidikan Biologi, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The occurrence of plant blindness among students, then the plant literacy movement must be carried out intensively through learning in schools by applying phenetic. This study used a pre-experimental design pre-test and post-tests group. Pre-test about system thinking which is part of 21st century skills of critical thinking and problem solving regarding seed plants as aspects of 21st century plant literacy in high school students of class X MIPA in Bandung, conducted before phenetic learning. During learning, students are assigned to begin by identifying and selecting the characters of each taxon until reconstructing the phenogram. After phenetic learning, a post test was conducted. The results showed that there was an increase in 21st century plant literacy as much as 0.61 which included moderate categories and students could positively accept phenetic learning. Thus in addition to being a curriculum demand, phenetic also has the potential as a means to improve 21st century student plant literacy, but only a few aspects of system thinking can be developed. Further improvement is needed in phenetic learning, especially in selecting taxon and determining its characteristics.

Keywords
Phenetic, plant literacy, system thinking

Topic
Biology Education

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

Corresponding Author
kusmawan kusmawan

Institutions
IKIP Siliwangi

Abstract
This study is a classroom action research that aims to improve students mathematical reasoning abilities through a demonstration learning approach. This research was motivated by observations in class VII of SMP Negeri 2 Cilawu, Garut Regency, that students mathematical reasoning ability in Mathematics subjects was very low, that is, the average of each indicator only reached 3.2. The subjects of this study were seventh grade students of SMP Negeri 2 Cilawu 2018/2019 academic year. This research was carried out in 3 cycles. Stages in each cycle included planning, action, observation, reflection. Instruments used to measure students mathematical reasoning abilities used a description test given at the end of each cycle. Based on the results of the study obtained data as follows: in cycle I students reasoning abilities gained an average of 45.25. In the second cycle obtained an average of 56.5. In the third cycle obtained an average of 68.75. So the authors conclude that with a learning approach demonstration of students reasoning abilities increases

Keywords
mathematical reasoning,demonstration learning approach

Topic
Mathematics Education

Link: https://ifory.id/abstract/y4tTpeNGrDQX

Corresponding Author
Yessi Permata Sari

Institutions
Sriwijaya University, Palembang, Indonesia

Abstract
This study to describe student-s mathemaical thinking aspect mathematization that measured by design result of problem – solving questions in topic arithmetic operations form algebra. The indicators of measuring mathematical thinking aspect mathematization are formalization, connecting, geometrization, and optimization. The subjects in this study were three students in grade 7 who were taken randomly. The research methods of this study consist preliminary design, focus group discussions (FGD), trials, observation and interview, and retrospective analysis. These 3 questions given can bring about mathematical thinking aspect mathematization. . The technique for data analysis was qualitative. As the results of this study, for question number 1, all of student-s answer was correct, student 1 showed appearance of geometrization, formalization, and optimization student 2 and 3 showed appearance of geometrization and formalization. For question number 2, all of student-s answer was correct, but on the number questions the third student was confesed when drawing and they discussed with a long enough time and finally they got the right picture all students showed appearance of geometrization, formalization and optimization . For question number 3, all of student-s answer correct, all students showed appearance of geometrization and formalization. all of student showed appearance of formalization, geometrization, and optimization, but they don-t connecting.

Keywords
Mathematical Thinking, Mathematization, Problem – Solving

Topic
Mathematics Education

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

Corresponding Author
FEBRINNA MONA SAPUTRI

Institutions
a) Master of Mathematics Education, Sriwijaya University, Komplek Unsri Jalan Srijaya Negara, Bukit Lama, Kecamatan Ilir Barat I, Palembang 30137, Indonesia
*ratu.ilma[at]yahoo.com
b)Master of Mathematics Education, Sriwijaya University, Komplek Unsri Jalan Srijaya Negara, Bukit Lama, Kecamatan Ilir Barat I, Palembang 30137, Indonesia

Abstract
The purpose of this research was to produce mathematic questions of PISA type using online shop context that was valid, practical, and has a potential effect on students mathematical literacy abilities. The method of this research is design research type development studies, which has two stages: preliminary and formative evaluation. This research involved high school students of class X in Palembang, South Sumatera Indonesia. Data collection techniques are walk-throughs, documents, observations, interviews, and tests. In the field test stage, the strategy of students answers when solving problems raises various mathematical literacy abilities, namely mathematical abilities; using language and operation symbolic, formal and technical; and communication. There are 3 of 29 students who use the mathematical ability, use language and operation symbolic, formal, technical and communication. There are 14 of 29 students who use language and operation symbolic, formal, technical and communication. Then, only 12 of 29 students who use communication abilities

Keywords
Design Research;PISA;Online shop

Topic
Mathematics Education

Link: https://ifory.id/abstract/wBndNARTF9CU

Corresponding Author
NURDINI ELMUNAWARAH

Institutions
a) Master of Mathematics Education, Sriwijaya University, Komplek Unsri Jalan Srijaya Negara Bukit Lama, Kec. Ilir Barat I, Palembang 30137, Indonesia
*ratu.ilma[at]yahoo.com
b) Master of Mathematics Education, Sriwijaya University, Komplek Unsri Jalan Srijaya Negara Bukit Lama, Kec. Ilir Barat I, Palembang 30137, Indonesia

Abstract
The aims of this article was to design PISA-like problems of mathematics by using online ticketing system as its context and Macromedia Flash as its media that is valid, practical, and has potential effects. This research method is Design Research type of development studies with two stages, namely preliminary and formative evaluation. The research subjects were class X students of Senior High School Number 1 Palembang. Data collection techniques with documents, wolkthrough, tests, interviews, and observations. In the learning process, this research uses the Indonesian Realistic Mathematics Education (PMRI) approach with the Lesson Study for learning Community (LSLC) system where all mathematics teachers in class X are involved starting from the process of developing the problem to the field test. Based on the results of the study it was found that the mathematical problem of the PISA model uses the context of online tickets through interactive learning media assisted by Adobe Flash Macromedia which is valid and practical, and has potential effects. Valid in terms of content, constructs, language, and workmanship of students in the one-to-one stage. Practical seen from the workmanship of students in the small group stage. From the results of the field test it was found that the problem has a potential effect on mathematical literacy skills, namely communication, mathematizing, representation, reasoning and argument, devising strategies for solving problems, using symbolic, formal, and technical language and operation.

Keywords
PISA, Mathematical Literacy, Online Tickets, Macromedia Adobe Flash

Topic
Mathematics Education

Link: https://ifory.id/abstract/pvBtJnjR9GaL

Corresponding Author
ELIS MUSLIMAH NURAIDA

Institutions
a) Master Of Mathematics Education, Sriwijaya University, Jalan Srijaya Negara, Bukit Besar, Ilir Barat I, Bukit Lama, I, Kota Palembang, 30128, Indonesia.

ratu.ilma[at]yahoo.com

b) Master Of Mathematics Education, Sriwijaya University, Jalan Srijaya Negara, Bukit Besar, Ilir Barat I, Bukit Lama, I, Kota Palembang, 30128, Indonesia.

Abstract
One of the alternatives used in improving the quality of education and the quality of learning is by using the lesson study system which is currently being discussed in Indonesia. Lesson Study it self is a learning system that has long been applied in Japan. The purpose of this study is to know how Lesson Study is to remind professional teachers in the discussion of mathematics learning of material integer multiplication. This research is related to the 2013 learning curriculum and PMRI approach. The methodology used in this study is deskriptive. This research involved all mathematics teachers of class VII Palembang 1 Junior High School. The activities in this study consist of four stages: Plan, Do, See and Re-design. The first stage is designing learning devices such as Lesson plan, teacher instructions, and student worksheets. Second stage applies the results of previous stage. Third, reflects the results of the second stage, then the Re-Design stage changes or Improves the learning instrument. The media used in this study are, Syllabus, teacher and student handbook, Lesson plan, Student worksheets and video. The results of this study indicate that the lesson study system can remind professional teachers in designing mathematics learning of material integer multiplication.

Keywords
PMR, lesson study,Mathematics Learning Process,Student worksheets

Topic
Mathematics Education

Link: https://ifory.id/abstract/CQe8GJrpEf2M

Corresponding Author
Anggi Arini

Institutions
a) Master of Mathematics Education, Sriwijaya University, Jalan Srijaya Negara, Kelurahan. Bukit Lama, Kecamatan.Ilir Barat I, Bukit Palembang 30128, Indonesia

Ratu.ilma[at]yahoo.com

b) Master of Mathematics Education, Sriwijaya University, Jalan Srijaya Negara, Kelurahan. Bukit Lama, Kecamatan.Ilir Barat I, Bukit Palembang 30128, Indonesia

Abstract
This study aimed to produce learning trajectories that could help the students to learn integer addition and subtraction. The method of this study used research design with the initial stages of preparation (preparing for the experiment), design experiment (design experiment), and retrospective analysis (retrospective analysis). The learning approach used Indonesian Realistic Mathematics Education (PMRI). The subjects in this study were seventh-grade students of SMP Negeri 01 Palembang, Indonesia. Data collection was done through observation of student activities, documentation of events in the classroom in the form of photos and videos, and collection of student tasks. The results of this study produced 5 problem addition and 5 subtraction of integer that who were able to help students understand the concept of addition and subtraction of integers could be triggered by using of Eid cakes as a context in learning and students who were able to solve problems in everyday life related to addition and subtraction of integers.

Keywords
Addition of integer, Subtraction of integers, PMRI

Topic
Mathematics Education

Link: https://ifory.id/abstract/C3YJ4DxRXPFe

Corresponding Author
Yeni Widiastuti

Institutions
a) Master of Mathematics Education, Sriwijaya University,
Jalan Srijaya Negara, Bukit Besar, Ilir Barat I, Bukit Lama, Kota Palembang, 30128, Indonesia

ratu.ilma[at]yahoo.com
b) Master of Mathematics Education, Sriwijaya University,
Jalan Srijaya Negara, Bukit Besar, Ilir Barat I, Bukit Lama, Kota Palembang, 30128, Indonesia

Abstract
This study aims to develop a set of valid and practical of PISA-like mathematics using transportation context, and to know the potential effects of the developed PISA-like mathematics problems to the ability of the tenth-grade students- mathematical literacy. The PISA-like mathematics problem developed using Design Research type development studies. There are two stages procedure of this study, preliminary stage and formative evaluation stage. The subject of this study were 10th-grade students of Srijaya Negara Senior High School. The data collection techniques used were walkthrough, interview, test and documentation. Based on the result of this study, it can be concluded that there are a set of valid and practical PISA-like mathematics problems using transportation context, and the potential effects be obtained from the result of students- answer at field test stage. Based on the analysis, there are 3 of 34 students use communication; mathematization; representation, devining strategies to solve problems; using symbolic, formal, and technical languages, 28 of 34 students, using communication ability only, and 2 of 34 students can-t use any ability when solving the problem.

Keywords
PISA-like Mathematics Problems, Change and Relationships, Transportation

Topic
Mathematics Education

Link: https://ifory.id/abstract/ABN8JV6kb9Tf

Corresponding Author
Nurma Lestari

Institutions
a) Master of Mathematics Education, Sriwijaya University, Komplek Unsri, Jl. Srijaya Negara, Bukit Lama, Kec. Ilir Bar. I, Palembang 30137, Indonesia

ratu.ilma[at]yahoo.com

b) Master of Mathematics Education, Sriwijaya University, Komplek Unsri, Jl. Srijaya Negara, Bukit Lama, Kec. Ilir Bar. I, Palembang 30137, Indonesia

Abstract
This research aims to generate the mathematical problems of the PISA model using the context of Palembang with the help of video which valid and practical and has a potential effect on the ability of student-s mathematics literacy. The context used are ampera bridge and light rail transit. Their content are shape and space; and uncertainty and data. The research subjects were 10th class in senior high school students. The methodology used is the design research of type development studies, with 2 stages namely, preliminary and formative evaluation. At the preliminary stage, curriculum analysis, PISA framework, research subject and instrument making problem. Formative evaluation stages include self-evaluation, expert reviews and one-to-one, small group, and field test. The data collection techniques used are documentation, walk through, tests, observations, and interviews. This research has resulted in the mathematical problems of the PISA model using the context of Palembang with the help of video which valid and practical, and has a potential effect. Valid as seen from the validator assessment results based on content, construction, and language as well as student-s work in one-to-one phases. Practically seen from the students answers at the small group stage where students can understand the intent of the question. The potential effect is obtained from the students answers at the test field. Based on the analysis of student answers, the mathematical literacy skills that emerge are 72,72% communication skill; 93,93% mathematical skill; 96,97% representation skill; 72,72%reasoning and argument skill; 96,97% choose strategies to solve problems skill; 69,69% using symbolic, formal, and technical languages skill; and 100% use mathematical tools skill.

Keywords
PISA, Palembang, , Mathematical Literacy

Topic
Mathematics Education

Link: https://ifory.id/abstract/jbkRFrxzPtD6

Corresponding Author
Asep Ahmad Sehabudin

Institutions
IKIP SILIWANGI

Abstract
Each teacher in the school almost shows a role that seems more dominant than the participation of students in the teaching and learning process. The atmosphere makes students less active and less opportunities to develop self-creativity and make them continue to depend on the teacher and others. Whereas in the context of facing competition in the present era, qualified and highly skilled human resources are needed, able to work together and dare to compete. This study tried the Group Investigation (GI) type of cooperative learning model. This model prepares students to be in groups and work together both with group friends and other friends so that they are motivated to learn more actively. This research is an experimental study using two groups of students. One group as the experimental group and the other group as the control group. The purpose of this study is to compare the mathematics learning achievement of students who get conventional GI type cooperative learning models. The population is all seventh grade students at Caringin 1 Public High School, while the research sample is two classes of four VII classes at Caringin 1 Public High School. The instrument in this study is a form of seven questions. The results of the study on the final test were obtained, the value of tcount = 6.17 by taking the significance level of 1% and db = 30 + 32 - 2 = 60, then obtained t table = 2.39. It turns out that tcount = 6.17> t table = 2.39, this means H0 is rejected. So it can be concluded that student learning achievement in mathematics subjects that learn to get the GI type cooperative learning model is better than students who get conventional learning models. Received at 1% significance level.

Keywords
Cooveraitive Learning, Investigation Group, Convensional Learning Model

Topic
Mathematics Education

Link: https://ifory.id/abstract/hPbaVjr8NmZA

Corresponding Author
Nelly Fitriani

Institutions
IKIP Siliwangi

Abstract
This research is conducted due to low mathematical abstraction ability of junior high school students, since that mathematical abstraction is an important skill for both male and female students so that it is considered important to study gender factors for mathematical abstraction abilities. The objective of this research is to find out whether there is a significant difference between male and female mathematical abstraction abilities after using scientific approach supported by Excel VBA. This research was conducted to 16 female students and 15 male students of 9th grade at one of the junior high schools in West Bandung, Indonesia. The method in this study is quasi experimental by comparing the abstraction abilities of male and female students after being through by scientific approach assisted by Excel VBA. The instrument of this research is 3 questions about mathematical abstraction questions. The results of this study indicate that there are significant differences in mathematical abstraction between male and female students for some indicators after using the Scientific approach assisted by VBA Excel, this means the Scientific approach which assisted by Excel VBA can show the differences of mathematical abstraction between male and female students.

Keywords
mathematical abstraction; Gender

Topic
Mathematics Education

Link: https://ifory.id/abstract/WRg6Apb92czw

Corresponding Author
Kalfin Kalfin

Institutions
a) Master Program in Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km 21, Jatinangor 45363, Sumedang. West Java, INDONESIA
*kalfin17001[at]mail.unpad.ac.id
b) Department of Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung-Sumedang Km 21, Jatinangor 45363, Sumedang. West Java, INDONESIA

Abstract
Investing in mining stocks, investors are often faced with risk problems. Usually to minimize risk, this is done by forming an investment portfolio. This paper aims to discuss the optimization of the investment portfolio. The data analyzed are several mining stocks traded on the capital market in Indonesia. Optimization is done by using the mean-absolute deviation model to determine the optimal weight. Where optimization is done using a singular covariance matrix. Based on the results of optimization, we can obtain a weight allocation composition that provides an optimal portfolio. In addition, we also predict the amount of return on expectations and risks in the optimal portfolio formed. So that the composition of this optimal weight can be used as a consideration for investors in investing their capital in several analyzed mining stocks.

Keywords
Mining stocks, return, portfolio, optimization, mean-absolute deviation

Topic
Applied Mathematics

Link: https://ifory.id/abstract/r3WuLFpqfdcb

Corresponding Author
Andi Dirpan

Institutions
Food Science and Technology, Department of Agricultural Technology, Faculty of Agriculture, Hasanuddin University

Abstract
Chocolate bar is one of secondary product of cocoa beans which are ready to consume. The aim of this research is to know the effect of shredded and dried coconut kernel addition as a filler of chocolate bar. The method of this research started from the processing of beans into fats and cocoa powder, the making of shredded and dried coconut kernel as a filler, and the making of chocolate bar. The evaluation done based on ash content, fat content, and organoleptic in terms of color, odor, taste, and texture. The design of research used was completely randomized design in 3 repetition. Sample used is shredded and dried coconut kernel (A1 = 6%, A2 = 9%, and A3 = 12%). The results shows that addition of shredded and dried coconut kernel is significant at the 5% level of ash content and fat content. While organoleptic test shows that A1 (addition of 6% shredded and dried coconut kernel) is most preferred by panellist in terms of color and texture, while A3 (addition of 12% shredded and dried coconut kernel) is most preferred by panellist in terms of aroma and taste parameter.

Keywords
Chocolate, aroma, taste

Topic
Postharvest and food engineering

Link: https://ifory.id/abstract/REBK6UtXCLTn

Corresponding Author
Muhammad Daud

Institutions
Animal Husbandry, Faculty of Agriculture, Syiah Kuala University, Banda Aceh 23111 Indonesia

Abstract
The research aims to study the use of functional feed additive probiotic and phytogenic in rations on the performance of local duck grower phase. The study used 80 heads local duck 8-16 weeks old grower phase. The study was conducted by experimental method, using a completely randomized design (CRD) with 4 treatments of rations and 4 replications (5 ducks/pen). The experiment used completely randomized design with 4 treatment rations: R1 (basal diet /control), R2 (basal diet + phytogenic 0.4%); R3 (basal diet + probiotic 108 CFU); R4 (basal diet + phytogenic 0.4% + probiotic 108 CFU). The observed variables were: feed consumption, body weight gain, final body weight, feed conversion, and mortality of local duck. Data was analyzed by using one-way analysis of variance then continued with Duncan test. The results showed that the use of functional feed additive probiotic and phytogenic gave a positive response to the performance of local duck grower phase. The use of functional feed additive probiotic and phytogenic in ration significantly affect (P<0,05) feed consumption, body weight gain, and final body weight, but no significant affect on ration conversion and mortality local duck grower phase. It was concluded that the use of functional feed additive probiotic and phytogenic could serve as a source of feed additive in local duck ration and able to increase performance of local duck grower phase.

Keywords
phytogenic, probiotic, feed additive, performan, local ducks

Topic
Feeds, feeding, and animal nutrition

Link: https://ifory.id/abstract/kgwMcCaxF9Ee

Corresponding Author
NINA FARLIANA

Institutions
Faculty of Economic, Universitas Negeri Semarang

Abstract
Kendal Industrial Park (KIP) is a bilateral cooperation between Indonesia and Singapore. The cooperation is expected to be the driving force of the Indonesian economy, without prejudice to the economic impacts of surrounding communities. This study aims to analyze the impact of the park on changes society welfare. This type of research is qualitative research, by case study approach, with data source from community, government and manager through purposive sampling method. The analysis result show that KIP does not have a significant impact on changes in livelihoods, because there are still many companies that have not yet operated and many companies that are under construction. So the agricultural sector still dominates the livelihoods of population. Changes in income as a result of the development industrial estates bring different effects to the community. People who feel the positive impact of livelihood changes are those who can work at KIP. However, the people who are still in agricultural sector do not feel a change of their income. The impact of KIP development cannot be enjoyed by the community so far, synergistic steps are needed between the government, KIP and community, so can integrate well in order to achieve the success of regional development.

Keywords
Industrial Park, Livelihoods, Income, Welfare, Regulation

Topic
Economics

Link: https://ifory.id/abstract/ZaHwp3KLRYh8

Corresponding Author
Rocky Tarsisius Pantouw

Institutions
Universitas Indonesia

Abstract
As the growth of game industry, only few Studies in mobile games, and also focused on pre-adopting while ignoring post adoption behaviors. One intrinsic factor considered affecting gameplay is enjoyment. Some research has already conducted to understand what is enjoyment driver. Enjoyment is an external factor that influenced perceived usefulness. where perceived of usefulness is variable proposed in TAM. This study aims to examine impact the game design attribute that fit and influence enjoyment while play game and as a motive of continuance mobile game use in MOBA genre. This research adopts game design attributes of challenge, variety, novelty, design aesthetics, social interaction, playability attributes consist of perceived of use and interactivity. Structural Equation Modeling (SEM) is used for data analysis. The model is tested with 206 actual users. The findings put Novelty, design aesthetic and interactivity under observed. This research concluded that continual mobile game use is strongly driven by perceived of usefulness. The implications are discussed in the paper.

Keywords
Keywords: Mobile games, MOBA, Enjoyment, Continued use, TAM

Topic
Others

Link: https://ifory.id/abstract/ZXc79qhwHyvC

Corresponding Author
Moch Faizal Rachmadi

Institutions
Faculty of Economics, Universitas Negeri Semarang, Semarang 50229, Indonesia
*faizal.rachmadi[at]students.unnes.ac.id

Abstract
The Indonesian government has determined tourism as the leading sector and top priority in the economy. Therefore, the government continues to develop local tourism, one of which is in Bakaran Kulon Village, Pati Regency, Indonesia. The purpose of this study was to develop the tourism potential of Bakaran Kulon Village, Pati Regency, Indonesia an integrated of edutourism package through the creation of platforms with optimal management of economic, tourism and environmental. In this region there are some superior tourism and become an icon of Pati Regency, such as batik bakaran, bandeng presto and many more. This local potential can be used as a vehicle for edutourism in improving the local economy. However, the obstacle is the absence of integrated technology optimization to developing the tourism potential. Therefore, DOKAR.COM as an innovative solution in overcoming these problems. The method used in this study is the RnD (Research and Development) method. Based on studies conducted it can be concluded that DOKAR.COM is feasible because it can participate in developing the local potential of Bakaran Kulon Village, Pati Regency, Indonesia in improving the economy of the local community.

Keywords
edutourism; local potential Bakaran Kulon Village; regional economics; technology utilization; tourism development

Topic
Economics

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