Indonesia Conference Directory

Corresponding Author
Wingking Era Rintaka Siwi

Institutions
Institute for Marine Research and Observation, Ministry Marine Affair and Fisheries

Abstract
Bali strait get the influence of upwelling from the Indian ocean, especially when southeast monsoon (SEM). In normal years, upwelling processes in southern Java include Bali Strait appear when entering SEM in early June to mid-October, with cold SST. Climatic variability, the incidence of India Ocean dipole (IOD) is independent of ENSO. IOD correlates strongly with seasonal conditions. Medden Julian Ossilation (MJO) can affect the ENSO cyrcle even though it is not in the context of the cause Niño or La Niña formation, but can contribute to the speed of development and intensity of El Nino and La Niña. This study aims to investigate of ENSO, IOD and MJO toward the vertical temperature in Bali Strait during SEM (August 2013 & August 2017). The location of the study in Bali Strait 8.20S - 8.80S and 114.40E-115.20E. The method used is observation in August 2013 and 2017. The information about ENSO, this study is complemented by the Ocean Nino Index (ONI) climate index data and MJO obtained from NOAAs Climate Prediction Center. The information on IOD events is positive or negative mode, DMI data is also used from JAMSTEC. Information on the incidence of ENSO and IOD was used to further analyze the influence of these climatic conditions on the evolution of vertical temperature profiles in the Bali Strait. Seasonal vertical profile temperature variability linked to climate index in Bali Strait waters is processed and analyzed using ferret software from PMEL-NOAA, ODV, and General Mapping Tools (GMT). Based on the results vertical temperature in the August 2013 were relatively cooler with a thicker mixer layer than the August 2017. In the period of August 2013, the normal ENSO conditions (-0.3) with IOD (+) (0.1) with weakening intensity, while there was a period of August 2017 normal ENSO conditions (-0.16) with strong (+) IOD (0.6). Direct linier correlation among ENSO and IOD. MJO in August 2017 looks strong than August 2013 although at the same ENSO phase (neutral). Indirect linier correlation among ENSO and MJO.

Keywords
vertival temperature, ENSO, IOD, MJO, Bali Strait

Topic
Coastal and Ocean Dynamics

Link: https://ifory.id/abstract/uWN4KBjyMqpQ

Corresponding Author
Sopiah sopiah

Institutions
a) Faculty of Economics, Universitas Negeri Malang
Jl, Semarang No. 5 Malang, Indonesia 65145.
*sopiah.fe[at]um.ac.id
b) Sekolah Tinggi Keguruan dan Ilmu Pendidikan PGRI Pasuruan
Jl. Ki Hajar Dewantara No.27-29, Pasuruan, Indonesia 67118.

Abstract
The purpose of the study is to explain the effect of job stress on turnover intention directly or indirectly through job satisfaction. The study population was all employees of government commercial banks in East Java, Indonesia. With multi stage sampling technique, it was obtained a research sample of 600 people. The analysis technique uses descriptive analysis and path analysis. The findings of the study prove that job stress has a positive and significant effect directly or indirectly through job satisfaction.

Keywords
Job stress; Job satisfaction; Turnover intention

Topic
Management, Organization, Leadership and IT

Link: https://ifory.id/abstract/wb4nDjvmVFEZ

Corresponding Author
Ni Komang Rahayu Astini

Institutions
Institute of Technology and Health Bali
Jalan Tukad Balian 180, Renon 80226, Denpasar, Bali
http://www.itekes-bali.ac.id

Abstract
Housewives who do not work formally often experience low self-esteem than working housewives. One alternative way to overcome it-s by socializing through PKK organization activities in the Banjar such as participating in joining dance training, one of which is Sisya dance. The objective of the research was to determine the effectiveness of Sisya dance training on improving self-esteem on housewives who do not work formally in Banjar Pemamoran-Temacun Kuta Village 2019. This study employed Pre – experimental with One Group Pretest Posttest design. Sisya dance training intervention was provided through 3 phases, namely pretest then practicing Sisya dance for 8 meetings with a duration of 90 minutes and re-evaluated through posttest and observation sheet. Intervention was provided to the housewife who do not work formally as many as 24 respondents with total sampling technique. The data were collected by using questionnaire of Rosenberg Self-Esteem Scale (RSES and processed by using paired t-test. The finding showed that Sisya dance has an effect on improving self-esteem on housewives who do not work formally (ρ value 0,001 < 0,05). The conclusion of this research was Sisya dance practice can be used as a very appropriate method in socializing to improve self-esteem, well-being and social status on housewives who do not work formally.

Keywords
Self-Esteem, Sisya Dance, Housewives

Topic
Innovation in Healthcare

Link: https://ifory.id/abstract/8JeAN2MTjFP4

Corresponding Author
Ni Nyoman Pebrina Anderyani

Institutions
Institute of Technology and Health Bali
Jalan Tukad Balian 180, Renon 80226, Denpasar, Bali
http://www.itekes-bali.ac.id

Abstract
Family who have member with mental illness in Pedungan Village, South Denpasar have not understood yet how to handle People with Mental Illness, so giving information through psychoeducation is really needed to increase family behavior in empowering people with mental illness. The objective of the reseacrh was to identify the effect of psichoeducation toward family behavior about empowerment of people with mental illness at Rumah Singgah Rai-Manggis. This research employed pre-experimental with one group pre-test post test. Psychoeducational intervention was conducted in 5 sessions with 120 minutes to 20 families of People with Mental Ilness. The samples were taken by using total sampling technique. Data were collected by using behavior questioner and analyzed by using paired t-test. The finding showed that p-value was 0,001 < 0,05 which means psychoeducation significantly affect family behavior about empowerment of People with Mental Illness at Rumah singgah Rai-Manggis.The conclusion of reseacrh was psychoeducation can change family behavior in order to support rehabilitation at Rumah Singgah or empowering center, psychoeducation can be used as a good alternative intervention for the family in empowering People with Mental Illness in society.

Keywords
Family Behavior, Psychoeducation, People with Mental Illness, Empowerment.

Topic
Education and Learning

Link: https://ifory.id/abstract/rEyuGMYCaU92

Corresponding Author
Dewa ayu sinar Putri pertami

Institutions
Institute of Technology and Helath Bali
Jalan Tukad Balian 180, Renon 80226, Denpasar, Bali
http://.itekes-bali.ac.id

Abstract
Dysmenorrhea in teenager can have an impact on activities and doing activity, thus it can interfere of the teaching and learning process. This can be done with various alternative therapies, one of them is abdominal stretching therapy. The purpose of this study was to identify the effect of abdominal stretching exercise toward dysmenorrhea reduction on teenager in ten grade student of Senior High School 6 Denpasar. This study employed pre experimental with one group pretest posttest design. The interventions of abdominal stretching with 10-20 minutes to 20 students who experienced dysmenorrhea and the sample were selected by using total sampling. The data were collected by using Faces Pain Scale-Revised (FPS-R) and analyzed by using non Paired t-Test. The finding showed that the significant value was p- value = 0,000 or 0,001 (p< 0,05) which meant abdominal stretching provide the significant effect to the dysmenorrhea reduction on teenager in ten grade student of Senior High School 6 Denpasar The Conclusion of research was abdominal stretching is recommended as an appropriate strategy for measuring pain scale in decreasing dysmenorrhea on teenager

Keywords
Dysmenorrhea, Teenager

Topic
Healthcare Practice and Services

Link: https://ifory.id/abstract/72bKgFRpLT3G

Corresponding Author
Ni Luh Putu Darmayanti

Institutions
Institute of Technology and Health Bali
Jalan Tukad Balian 180, Renon 80226, Denpasar, Bali
http://www.itekes-bali.ac.id

Abstract
The way to detect the growth disorder for children is by regularly weighing children, especially for under-five children. However in Buleleng Regency, mothers participant who aware for weighing under-five children were still rare. This case caused by lack of knowledge of them. It was important to improve mothers knowledge by health education using animated video, but Community Health Centre in Sukasada Buleleng never provide that kind of education. The purpose of this study was to find out the effect of health education using animated video towards the knowledge of mothers with under-five children about the importance of weighing under-five children to the health integrated post. This study implemented pre-experiment with one group pre-test and post-test design and was carried out in the area Juuk Mas with the total population 48 mothers with under-five children. Sample was selected through total sampling. Data were collected by using a questionnaire and analyzed by using the Wilcoxon Rank Test. The result showed that the majority of mothers had sufficient knowledge before they were provided with health education (Md: 6, min: 5, max: 8) and had good knowledge after they were provided with health education (Md: 9, min: 7, max: 10). The statistic result showed that health education using animated video had an effect in improving the mothers knowledge (ρ value <0,001).The conclusion of this research was health education using animated video can improve the knowledge of mothers with under-five children about the importance in weighing under-five children in the health integrated post. Therefore, in order to be effective, health educations are expected to be carried out by using animated videos. Mothers with under-five children are also expected to take their children regularly for weighing in the health integrated post.

Keywords
Health Education, Mothers Knowledge, Children Weighing

Topic
Education and Learning

Link: https://ifory.id/abstract/qPEC7RFYadVx

Corresponding Author
Dian Cahyawati

Institutions
a) Mathematics Study Program, Sriwijaya University, Palembang
Jl. Palembang-Prabumulih km. 32 Indralaya Kab. Ogan Ilir
* dianc_mipa[at]unsri.ac.id
b) Mathematics Study Program, School of Postgraduate, Indonesia Education University, Bandung
Jl. Dr. Setiabudi No. 229 Bandung

Abstract
This article presents a profile of students statistical reasoning ability on the topic of inference statistics based on their academic characters. Data was collected from active students of pre-service mathematics students in the even semester of 2018/2019 that consisted of two learning classes. Based on the similarity of the statistics pretest result, one class was determined randomly as the experimental group and the other class as the control group. Statistical reasoning ability (SRA) and prior knowledge of statistics (PKS) were measured by test instruments. Student characters data were collected through a closed questionnaire. Each students academic character was explained by the association with nine PKS indicators. Based on the age, students were aged from 19 - 21 year and consisted of 29% of male and 71% of female. The PKS profile based on gender showed that female students tend to have higher SRA achievement for each indicator than male students. Students in the experimental group with more frequent learning intensity and longer learning periods tended to show better achievement of PKS compared to students in the control group. Students with low and high PKS levels indicated that the students- SRA achievement in the experimental group tended to be better than students- SRA achievement in the control group while the moderate level was not.

Keywords
Prior Knowledge, Statistical Reasoning, Students Achievement

Topic
Mathematics Education

Link: https://ifory.id/abstract/BQp9DrnREWjU

Corresponding Author
Nur Anisyah Rachmaningtyas

Institutions
a) Penelitian dan Evaluasi Pendidikan, Universitas Negeri Yogyakarta, Jl. Colombo No.1, Sleman 55281, Indonesia.
b) Pendidikan Matematika, Universitas Ahmad Dahlan Yogyakarta, Jl. Ringroad Selatan, Bantul 55191, Indonesia.

Abstract
The purpose of this study was to determine the influence in elementary school mathematical reasoning in geometry problems solving. This research method uses quantitative research with a type of comparative descriptive research. The subjects used were 5th grade students at SD Negeri Tegalmulyo, Yogyakarta City. This study used the Univariate test on the General Linear Model, with the help of data processing program Statistics Package for Social Sciences (SPSS) 16.0 for Windows. The results of data analysis obtained the Sig. equal to 0.002 with a significance level of 95% or  (alpha) = 0.05 hypothesis testing. Thus it can be interpreted that there is an influence of mathematical reasoning of 5th grade elementary school students in solving geometry problems on mathematics subjects. This is explained by the existence of mathematical competencies in students different reasoning. Mathematics competency on the highest reasoning of students mastered by students is able to describe various characteristics of the problem by mentioning the solutions used, while for the lowest are students with the ability to incorrectly mention the solution to the problem and process in solving mathematical problems.

Keywords
Mathematical Reasoning, Results Learned, Mathematical Problem Solving

Topic
Mathematics Education

Link: https://ifory.id/abstract/j7mhFN2DgZkH

Corresponding Author
Deny Sutrisno

Institutions
Sekolah Tinggi Ilmu Kesehatan Harapan Ibu Jambi

Abstract
The purpose of this research was to make video-based learning media as a guide to using Density Tab Tester and to know the feedback from the video. Methods of learning Media development through 6 development steps were: (1) analyzing the needs of learners; (2) Formulating learning objectives; (3) Formulate material items; (4) Develop an evaluation instrument; (5) Writing the script and taking pictures; (6) Perform feedback retrieval (N = 132). In addition to these six steps, expert validation levels were also carried out before field trials. This research produced products in the form of instructional video learning use of Density tab tester

Keywords
Learning Video; Learning Media; Density tab tester

Topic
Integrated Science Education

Link: https://ifory.id/abstract/LeyZw2xr9q6T

Corresponding Author
Dyah Marganingrum

Institutions
a) Reserach Centre for Geotechnology – Indonesian Institute of Sciences
b) Kelompok Studi Media Energi Nusantara

Abstract
Bottom ash (BA) is waste categorized as B3 and requires special handling and costs. BA become as an interesting issue since the coal using increase in various industries as a fuel. In another case, municipal solid waste (MSW) generation become the environmental problem in the urban area. This paper aims to utilize these two wastes to products and solution of environmental problems as well. The method used in this study is briquetting from BA and fermented of MSW called Biomassed Coal Fermented (BCF) briquettes. The formulations used 60% BA and 40% MSW. The BCF briquettes were tested in boiler 1 which fixed bed type at the kind textile industry. The results showed that with 10% substitution of BCF briquettes for coal use, combustion efficiency increased by 48%. The measurements of air emissions showed a value below of the air quality standard for particulate, SO2, and NO2. When compared with boiler 2 which is without substitution (100% using coal) the particulates and NO2 increased 28% and 2% respectively then SO2 decreased 67%. This interim trial showed the potential of BCF briquettes can be an alternative fuel while reducing the generation of BA and MSW.

Keywords
air quality standards; bottom ash; emission; fermentation; municipal solid waste

Topic
Physics

Link: https://ifory.id/abstract/b74kxF6Wa2Xr

Corresponding Author
Mohammad Hardiyansah

Institutions
Accounting Department
Faculty Economic and Bussines
Jember University
Jalan Kalimantan No. 37, Krajan Timur, Sumbersari, Kec. Sumbersari, Kabupaten Jember 68121, Jawa Timur, Indonesia
*nadiyansah.97[at]gmail.com
*aisa.agustini[at]gmail.com

Abstract
The objectives of this research is to examine the role of environmental performance in the relation between carbon emissions disclosure and firm value. A measurement tool using content analysis method to measure carbon emissions disclosure that adopts a checklist developed based on a request sheet obtained from the Carbon Disclosure Project (CDP). Firm value is proxied with Tobins Q, while environmental performance is assessed based on the results of the environmental management performance appraisal program (PROPER) issued by the Republic of Indonesia Ministry of Environment. Sample of this study are being chosen by using purposive sampling method, which obtain 43 companies that listed on the Indonesia Stock Exchange (IDX) from 2014 to 2018. Multiple analysis regression is used to test the hyphotesis. The results indicate the carbon emissions disclosure has a positive and significant effect on firm value. This research also found that there is an evidence that environmental performance positively influences the relation of carbon emissions disclosure to firm value. These results indicate that ratings in PROPER can be a guarantee whether the company has performed its environmental performance properly or not. Participating in the PROPER program is a form of corporate responsibility in an effort to reduce the impact of environmental damage arising from the companys operational activities. Environmental performance has been proven as moderating variable to the relationship between carbon emission disclosure and firm value.

Keywords
Carbon Emissions Disclosure, Firm Value, Environmental Performance

Topic
Enviromental Accounting

Link: https://ifory.id/abstract/bCvxQP32mpkr

Corresponding Author
Tafiprios Tafiprios

Institutions
University of Mercu Buana
tafiprios[at]gmail.com

Abstract
In recent periods there has been an increase in the number of tourists on the Pantai Indah Kapuk Mangrove Nature Park, but only a few visitors come to ecotourism destinations. This research was conducted to analyze the effect of the service marketing mix, the development of ecotourism objects, and electronic word of mouth on the tourist intention to visit. The study design used a causal method, with the study population being tourists who knew or had visited the Pantai Indah Kapuk Mangrove Mangrove Nature Park as many as 200 respondents. The results of the analysis concluded that there was an influence of the development of ecotourism objects and electronic word of mouth on tourist intention to visit, while the service marketing mix carried out by destination managers did not affect the tourist intention to visit.

Keywords
Service Marketing Mix, Ecotourism Object Development, Electronic Word Of Mouth, Tourist Intention To Visit, Mangrove Nature Park, Pantai Indah Kapuk

Topic
Tourism and Hospitality Management

Link: https://ifory.id/abstract/AD3egYE2hTCK

Corresponding Author
Melati Ifthacharo

Institutions
(a)Master Program of Physics Department,
Faculty of Mathematics and Natural Science, Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
*melati.ifthacharo[at]student.itb.ac.id
(b)Nuclear Physics and Biophysics Research Division, Physics Department,
Faculty of Mathematics and Natural Science, Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia

Abstract
Inherent safety dan siklus bahan bakar tertutup yang berkelanjutan merupakan salah satu aspek penting dalam desain reaktor Generasi IV. MSR dipilih menjadi salah satu konsep reaktor Generasi IV karena dapat memenuhi hal tersebut. FUJI-U2 atau MSR-2R adalah MSR yang memiliki 2 region teras yang diajukan sebagai bentuk simplifikasi daari FUJI-U3 (3-region core). FUJI-U2 menggunakan plutonium dan Uranium233 sebagai material fisil, dua opsi ini diajukan karena diketahui bahwa Uranium233 tidak tersedia secara alami di alam. Studi komparatif dari MSR dengan 2-region core berbahan bakar Th-U233 dan Th-Pu telah dilakukan yang bertujuan untuk memperdalam pemahaman karakteristik dari reaktor. Pada analisis digunakan SRAC2006 dengan data library JENDL4.0, dan CITATION dilakukan sebagai validasi teras. Desain parameter yang ditetapkan pada tiap region adalah komposis bahan bakar, radius teras, dan fraksi bahan bakar. Simulasi perhitungan burn-up dilakukan pada total 2000 hari, dengan 21 langkah setiap 100 hari siklus. Radius FUJI-U2 berbahan bakar U233 yang digunakan masing-masing sebesar 5, 10, dan 3,95 cm, dengan fraksi bahan bakar 31,5 vol% dan 18,9 vol%. Sedangkan untuk FUJI-U2 berbahan bakar plutonium, radius teras yang digunakan adalah sebesar 4,75 dan 4,40 cm dengan fraksi bahan bakar 27,3 vol% dan 23,4 vol%. Hasil sementara menunjukkan bahwa Kinf dari Uranium233 untuk teras 1 dan teras 2 adalah 1,032075 dan 1,122150. Sementara untuk Kinf plutonium untuk teras 1 dan 2 adalah masing-masing 1,018639 dan 1,059092. Perhitungan burn-up, rasio konversi, elemental bahan bakar dan komposisi isotopik dari masing-masing teras juga aka dibahas lebih lanjut.

Keywords
MSR 2-region ; SRAC2006 ; Nuclear Analysis

Topic
Nuklir

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

Corresponding Author
Hamdan Azhar Siregar

Institutions
Jakarta Islamic University Faculty of Law

Abstract
In the Greco-Roman and medieval times, when Mazab developed, Irrasioanls natural law had laid the philosophical foundations of basic obligations for humans rooted in the philosophy of metaphysics and divine values. Only when individual expressions flare up and urge recognition of basic human rights, the demands for recognition and protection of human rights develop. The teachings of Aquinas (1224-1274), Hugo Grotius (1583-1645), Magna Charta (1215), Human Rights Petition (1628), British Declaration of Human Rights (1689), United States Declaration of Independence (1776), and the French revolution (1789) is evidence of this shift. Changing the rationale from basic obligations to basic rights is a contradictory change, so that between basic obligations and basic rights seems to be a fundamental conflict. Based on our research using normative legal methods, it was based on several theories such as the balance theory proposed by John Rawl, and the theories of justice, among others, put forward by Thomas Aquinas and the theories of the law of the natural law can be concluded that rights and obligations are a unity cannot be separated. Therefore, respect for human rights must also be followed by human obligations. Thus, to see the realization of Human Rights as regulated in Articles 27 to 32 of the 1945 Constitution, philosophically, we must look at the atmosphere of mysticism in the Human Obligations that are in their minds. Thus, the implementation of the implementation of Human Rights does not stand alone and separate from the Human Obligations, but between Human Rights and the Obligations of Human Rights are mutually complementary.

Keywords
Human Rights and Human Obligations.

Topic
Human Right Issues

Link: https://ifory.id/abstract/nY3ztUevPHTx

Corresponding Author
Gadis Anastasia

Institutions
Sosial Anthropology at State University of Medan

Abstract
This study aims to find out 1) Chinese Ethnic background performing rituals at the tomb; 2) Patterns carried out during the ritual process take place; and 3) Linkages between rituals and non-formal education to respect ancestors. This study itself uses qualitative methods with a case study approach that uses several techniques: 1) Determination of informants; 2) Data collection; and 3) Data analysis techniques. The results of this study indicate that Chinese ethnicities who performed the rituals at the tomb are convinced that all their requests will be granted by ancestors who inhabit this tomb, such as requests relating to the smooth running of all kinds of world affairs, health, success, and those related to marriage. The pattern that is carried out during the ritual process starts from the preparation stage. Which continued with the implementation stage where this was the culmination of the ritual by bringing offerings. Then after implementation, do activities by sharing a little fortune. The ritual in this tomb is used as an educational medium that is very useful to continue the next generation through non-formal education to respect ancestors because there are cultural, psychological, and religious values in its implementation.

Keywords
Trust, Rituals, Non-formal Education

Topic
Social,Language and Cultural Education

Link: https://ifory.id/abstract/bmLBD9qHfXtQ

Corresponding Author
Ilham Syahputra

Institutions
a) Social Anthropologi, University State of Medan
Jl. Williem Iskandar Pasar V Medan 20221, Indonesia
b) Supervisor of Social Anthropologi, University State of Medan

Abstract
This study aims to determine the men participation in the use of vasectomy contraceptive method and its implication on family education in Tanjung Morawa Subdistrict, Deli Serdang Regency. This is a descriptive research that was conducted using a qualitative approach. Data collection techniques were carried out through interviews, observations and library studies. The results show that male participation in the use of vasectomy contraceptive method in the area is very high. This condition is affected by the implementation of a strategy to increase men participation through personal selling by recruiting vasectomy participants to become family planning motivators. Men participation in the use of vasectomy contraceptive method has implications on family education, where parents play a role in teaching reproductive health and gender education to their children through the process of giving examples from which the children can understand that reproductive health is not only the responsibility of women but also men.

Keywords
Men Participation, Vasectomy, Family Education

Topic
Social,Language and Cultural Education

Link: https://ifory.id/abstract/YVEpFmGujy7Q

Corresponding Author
ASA ARO LAIA

Institutions
STKIP Nias Selatan Sumatera Utara (*a)
Dosen di Universitas Negeri Medan(b)
Dosen di Universitas Negeri Medan(c)

Abstract
This study aims to reveal the application of communication, resources, and bureaucratic implementation in the New Students Adminsions (NSA) zoning system policy. In SMA Negeri 1 Sunggal, Deli Serdang Regency. Data obtained by interview techniques in stages, namely the Education Office of North Sumatra Province, Principals, Teachers, Parents of students, and Students. Researchers use interview guidelines. Furthermore, it is processed and discussed with narrative techniques. The data obtained, the policy regarding the zoning system has been communicated to the organizers and the community, but there are people who are still not aware that this policy will equalize the quality of education and eliminate the label of superior schools, vaforit schools, but there are people who are not fully aware that some falsify Certificate of Poor; The available resources are trained and understand what is done with supporting facilities, but are constrained by electricity and internet networks and are troublesome with many registrants. Disposition relating to the characteristics of the organizer who is honest and takes the interests of the community, the funds needed from School Operational Aid Found . Constrained by the bureaucracy, there is support from the center to the regions, but there are still interpretations in the regions in the implementation of zoning.

Keywords
education policy, zonation

Topic
Educational Policy and Administration Education

Link: https://ifory.id/abstract/v8XzDAubFnf9

Corresponding Author
Rizki Aulia Elissa

Institutions
Unimed

Abstract
This study aims to: (1) produce a problem based learning based worksheet that is suitable for thematic learning in grade 5 of elementary school; (2) knowing the students critical thinking skills by applying the participants worksheets in the class. his student worksheet is compiled using the 4D model of Research & Development. Data retrieval research was conducted at SDN 101877 Tanjung Morawa. The research phase is define, design, develop, and Disseminate. The level of feasibility of student worksheets is obtained from expert validators and practitioner validators analyzed. After being validated and revised, the product is tested on a limited basis on students. The results of the trials were then analyzed to determine the feasibility of the worksheet of students from the perspective of students. Extensive tests are conducted after making improvements from the results of limited trials. The final results of the extensive test in the form of pretest and posttest values were then analyzed and obtained a standard gain value of 0.87 in the high category.

Keywords
Worksheets Development, Problem Based Learning, Critical Thinking Ability

Topic
Curriculum, Research and Development

Link: https://ifory.id/abstract/tvHhrBZCgXQ7

Corresponding Author
Annistya Oedaya

Institutions
Universitas Indonesia

Abstract
Airline industry had evolved into part of service industry. To have competitive advantage in the tight competition era, it is important for airline company to implement internal brand management that would be trigger of employees- beneficial and desired behaviors and attitudes that goes beyond their formal job description which called organizational citizenship behavior. In this study, we would examine the link between internal brand management, organizational identification, work engagement and organizational citizenship behavior in airline industry. Using questionnaire survey to 319 employees in Airline XYZ, we would test the model that has been proposed. The model includes different dimensions of Internal Brand Management and different manifestations of organizational citizenship behavior. The direct effect and indirect effect was analyzed using Structural Equation Method in Lisrel 8.80.

Keywords
Internal Brand Management, Organizational Citizenship Behavior, Organizational Identification, Work Engagement

Topic
Management

Link: https://ifory.id/abstract/aCdhFeL3yUBW

Corresponding Author
sri umi mintarti widjaja

Institutions
Economic Faculty
Universitas Negeri Malang

Abstract
Family economic education, is a very important education for family members. This is because a good economic education will make a good life in the future. In this study, as it was carried out on culinary endeavors, the economic education in question included providing knowledge about: (1) financial management, (2) calculation of the cost of goods sold, (3) marketing that includes how to present and use good, attractive tools. This research is a qualitative descriptive study carried out on culinary businesses in the Pulosari area of Malang, which is the oldest culinary area in Malang. Pulosari area is in the middle of Malang and is an area surrounded by several campuses. Data analysis is carried out by stages of data reduction, data presentation, and reporting. The results of the study show that the continuity of the culinary businesses which are now in their second generations is inseparable from the family economic education provided by their predecessors. The financial management provided by giving a direct example to children is a knowledge that is deeply imprinted in the minds of the business successors. In addition, children were involved in the making of the business development plans, so that they know for sure what their parents did in an effort to develop their culinary efforts. The calculation of the cost of goods sold is carried out by taking into account the factors that affect the cost of goods sold. Economic education enables the culinary business players in the Pulosari region diversify their business, venturing into businesses other than culinary namely travel businesses and lodging businesses. It is expected that in the future they will need to improve their computer-based financial management skills, so that their calculations are not done manually and their calculation accuracies improve.

Keywords
financial management, calculation of the cost of goods sold, marketing, business diversification.

Topic
Economics

Link: https://ifory.id/abstract/bNEnhFdDV4c7

Corresponding Author
Dwi Mahroji

Institutions
a. Pandu Madania Economics High School

Abstract
Economic growth in Indonesia is influenced by various factor. The main purpose of this study is to find out how the effect of of inequality gender on economic growth in Jawa Barat Province. The data which used in this study is secondary data tha is panel, they are ratio of life expectancy (AHH), ratio of the average length of school (RLS), ratio per capita income (PPP), labor investment and economic growth from 2011 to 2015. The data obtained from the Central Bureau of Statistic, West Java in numbers and ministry of women and children empowerment. To prove the research hypothesis used regression analysis of panel data that estimate using Eviews 8 program. From the analysis result can be conclude that (1) the ratio of life expectancy (AHH) have a negative and significant effect on economic growth with coefficient -0.140697and probability 0.0094(2) ratio of the average length of school (RLS) expectancy have a positive and significant effect on economic growth with coefficient 0.174187and probability 0.0082 (3) ratio per capita income (PPP) have a positive and significant effect on economic growth with coefficient 0.064864 and probability 0.0002 (4) labor investment have a positive and significant effect on economic growth with coefficient 6.236647 and probability 0.0000.

Keywords
Economic Growth; Gender Inequality; AHH Ratio; RLS Ratio; PPP Ratio; Panel Data Regression

Topic
Economics

Link: https://ifory.id/abstract/fgt6jcJTBanA

Corresponding Author
Wayan Winten Adnyano

Institutions
Universitas Indonesia

Abstract
The airline operating cost may vary along the operation time of the aircraft. This cost fluctuation should be taken as consideration for the decision-making process, for instance, the pricing calculation. A poor costing might distort pricing leading to a loss of business. A long-term oriented cost calculation to forecast the total cost of aircraft during the operation time is critical for the airline company. This research will study whether the life cycle cost analysis is fit for airline company with an emphasis on maintenance and disposal or aircraft redelivery cost and focus on aircraft operating lease context. It uses a case study framework on an airline in Indonesia with the interview and documentation analysis as the main research method. The life cycle cost is found to be fit for the airline company with activity-based life-cycle costing as the application model. The research presents an approach that provides a long-term oriented costing that is needed for management decision.

Keywords
Life Cycle Costing; Airline Operating Cost

Topic
Accounting

Link: https://ifory.id/abstract/knyjbTm6PV3h

Corresponding Author
Linda Agustina

Institutions
Faculty of Economics, Universitas Negeri Semarang, Indonesia

Abstract
The purpose of this study was to analyze the effect of company size, leverage, gross domestic product, and inflation rate on sharia stock return. Firm value was used as moderating variable to analyze the influence of firm size and leverage on sharia stock returns. These research populations are property and real estate companies listed in the Indonesia Sharia Stock Index (ISSI) in 2014-2017 as many as 53 companies. The samples were obtained by 38 companies with purposive sampling technique. The collection of data using documentation technique. The analysis of data used descriptive statistics and Structural Equation Modeling with smart PLS. The results showed that firm size and leverage did not affect sharia stock return. Gross domestic product and inflation rate have a significant positive effect on sharia stock return. The firm value moderated the influence of leverage on sharia stock return but did not moderate the influence of firm size on sharia stock return. The conclusions of this study are gross domestic product, inflation rate, and firm value are factors that can be considered in making investment decisions. Further research is recommended to add independent variables.

Keywords
Sharia Stock Return, Firm Size, Leverage

Topic
Accounting

Link: https://ifory.id/abstract/hu869VqkdZn7

Corresponding Author
Danang Setiawan

Institutions
a) Industrial Engineering Department, Universitas Islam Indonesia, Yogyakarta 55584, Indonesia
*Danang.setiawan[at]uii.ac.id

Abstract
Air Jet Loom (AJL) is a critical machine in textile industries, used to convert thread into fabric. This research uses a leading textile company in Yogyakarta as a study case. Preliminary observation in the case study shows that the AJL machine has a high downtime that affects the overall production process. This study aims to identify critical components of AJL machine and designing maintenance system for AJL machine to reduce downtime. Reliability centered maintenance (RCM) method was used in designing maintenance system by focusing on improving machine reliability. The study begins with the identification of critical components of AJL machine using a fishbone diagram and continued with pareto diagram. For each critical component, time between failure (TBF) data was collected. The collected TBF data is then used to calculate the level of reliability and maintenance schedule. The results found that there are six critical components of AJL machine, i.e. VPM, take up, insertion, kamran, oil circulation, and leno. The preventive maintenance scheduling interval for the six components is VPM 120 hours, belt take up 144 hours, insertion 72 hours, kamran 24 hours, oil circulation 144 hours and leno 96 hours. The proposed preventive maintenance schedule on the six critical components of AJL machine was able to reduce downtime by 30% and increase fabric production by 13%.

Keywords
Air Jet Loom; Maintenance; Reliability Centered Maintenance, Reliability

Topic
Industrial Engineering

Link: https://ifory.id/abstract/cK9h8xZafujt

Corresponding Author
Setiyo Gunawan

Institutions
Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember (ITS), Surabaya 60111, Indonesia
*Corresponding author:
Email: gunawan[at]chem-eng.its.ac.id
Tel: +62-31-5946240; Fax: +62-31-5999282

Abstract
Nyamplung (Calophyllum inophyllum) are widely spread in Indonesia and they are known to have many advantages. It has various benefits that can be utilized from root, stem, leaf, until seed. C inophyllum-s seed contains bioactive compound called calophyllolide. However, the utilization of C. inphyllum-s seed is still limited because they contain harmful toxins. So, C. inophyllum-s seed are generally used and investigated as a raw material of biodiesel. The aim of this research was to find the best condition to isolate calophyllolide, to know the yield of isolated calophyllolide and its purity percentage from crude C inophyllum oil. By far, the current research on calophyllolide is to extract the substance form C. inophyllum-s shell nut without further treatment on the shell nut. In this work, calophyllolide was separated from crude oil by silica gel adsorption and batchwise solvent extraction by using a mixture of hexane as non-polar solvent and methanol-water (9:1) as polar solvent. Liquid Liquid Extraction (LLE) was performed to purify the calophyllolide from polar liquid fraction produced from batchwise solvent extraction by mixture of hexane and ethyl acetate with solvent-PLF ratio 5:2. Ethyl acetate concentration in hexane used were 0%, 5%, and 9%. Each fraction obtained was tested qualitatively using Thin Layer Chromatography (TLC) and quantitatively using Gas Chromatography (GC) to analyze calophyllolide mixture. The best separation method were obtained by batchwise solvent extraction and 5% ethyl acetate with 67,94% purity level.

Keywords
adsorption, batchwise calophyllolide , Calophyllum inophyllum, silica gel, solvent extraction.

Topic
Chemical Engineering

Link: https://ifory.id/abstract/zW8LnE9R3Tck

Corresponding Author
Setiyo Gunawan

Institutions
Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember (ITS), Surabaya 60111, Indonesia
*Corresponding author:
Email: gunawan[at]chem-eng.its.ac.id
Tel: +62-31-5946240; Fax: +62-31-5999282

Abstract
Gadung (Dioscorea hispida Dennst.) is one of tubers which is available in almost all regions in Indonesia. However, due to the high content of cyanide acid, these tubers cannot be consumed directly. Therefore, proper processing techniques are needed to improve the nutritional value in gadung tubers. The aim of this study was to investigate the effects of fermentation time and initial bacteria cells number on improving the quality of modified gadung flour. Before fermentation process, gadung tubers were soaked in water at a ratio of 1:50 for 120 minutes to reduce levels of cyanide acid (161.83 ppm to 53.21 ppm). The fermentation time was performed for different periods of time (12, 24, and 36 hours) with intitial bacteria cell number of 1,21 x 1011 cells of Lactobacillus plantarum. The result showed that swelling power of modified gadung flour (6.75 g/g) was greater than wheat flour (4.57 g/g) but water solubility and flour whiteness degree of gadung flour (0.56% and 71.43%) were close to wheat flour (1.06% and 74,94% - 76.38%), for fermentation time of 36 hours.

Keywords
modified gadung flour, swelling power, water solubility, whiteness degree

Topic
Chemical Engineering

Link: https://ifory.id/abstract/tYCEw7Muec4h

Corresponding Author
Agus Dwi Anggono

Institutions
Mechanical Engineering Department, Universitas Muhammadiyah Surakarta

Abstract
In Indonesia, plastic waste production was at the second rank in domestic waste. It was produced around 5.4 million tons per year. It became national issues, due to Indonesia was the second biggest country after China that poisoning the sea with plastic. The objectives of the study are to develop biodegradable plastic composite and to investigate the mechanical characteristic and water absorption. It was made from polypropylene (PP) mixed with corn stalks powder. In this study, the weight fraction of polypropylene and powder was varied as 95%: 5%; 90%: 10%; 85%: 15%. For the water absorption test, the specimens were soaked in the water for 1, 7, and 14 days. The highest value of the tensile test was delivered from a specimen of 95%:5% weight fraction. The tensile test of the soak specimen for 0, 1, 7, 14 days was obtained 17,41 MPa, 16,94 MPa, 16,11 MPa, 13,51 MPa respectively. The strain was 1.07%, 1.19%, 1.01%, 0.87%. The modulus of elasticity was 1686,74 MPa, 1500,42 MPa, 1712,1 MPa, 1558,49 MPa. By adding the powder to the plastic, it was able to absorb water. The water absorption after 1, 7, and 14 days of water soak was 0.607%, 1.468%, and 4.651% respectively. The specimen of biodegradable plastic composites with a 95%: 5% ratio have compatible characteristics with commercial plastics and can be degraded easier.

Keywords
composite, biodegradable plastic, polypropylene, corn stalks powder

Topic
Materials Science

Link: https://ifory.id/abstract/7AbkgXBHC423

Corresponding Author
Arif Prasetya Kurniawan

Institutions
(a) Department of Mechanical Engineering, Universitas Muhammadiyah Surakarta
Jl. Ahmad Yani Tromol Pos 1, Pabelan. Kartasura, Sukoharjo
*d200150006[at]student.ums.ac.id

(b) Department of Chemical Engineering, Universitas Muhammadiyah Surakarta
Jl. Ahmad Yani Tromol Pos 1, Pabelan. Kartasura, Sukoharjo

Abstract
The amount of agricultural waste that is underutilized and plastic waste thrown away is one of the factors of environmental pollution that is difficult to overcome. Even if you can use it well, agricultural waste and plastic waste can have economic value. This study aims to determine the impact strength of hybrid composites by utilizing corn husk waste, banana midrib waste and Polyethylene Telephthalate plastic waste as plasterboard. The way to make it is corn husk fiber and banana midrib fiber until it becomes powder, then the fiber is sieved with a 50 mesh sieve. While plastic waste is chopped to small. Furthermore, corn husk fiber powder, banana midrib fiber powder and plastic powder are mixed using epoxy resin and then cold pressed for 10 hours. Data is collected by means of testing tensile strength. From the results of the study it can be concluded that corn husk fiber, banana midrib fiber and Polyethylene Telephthalate plastic can be used as a mixture of environmentally friendly waterproof plasterboard making. In further development, these composites not only can be used as plasterboard, but can be used as house doors, study tables, room walls, ironing boards, canopies, sound absorbers, etc.

Keywords
corn skin fiber, banana skin fiber, PET plastic, composite hybrid, epoxy resin

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/nBkQw6JxPXve

Corresponding Author
SUNRIXON CARMANDO YUANSAH

Institutions
Hasanuddin University

Abstract
Rice straw is one of the lignocellulosic substrate that has not been used optimally and mostly just become an agricultural waste if not handled properly. Cellulose and hemicellulose content in lignocellulose structures of rice straw has great potential for thermostable enzymes production from thermophilic bacteria. The purpose of this study were to determine the effect of pretreatment in rice straw substrate on the total number of bacteria and its enzyme activity. The method used in this study include straw flour production, bacteria isolation and multi-level batch selection system, themostable enzyme production, total bacteria and enzyme activity measurement. The results obtained were combination of alkaline delignification and pressurized steam heating treatment resulting higher microbial growth pattern than the pressure steam heating only. Observation of pH showed pH decreasing in each treatment. The enzyme activity obtained showed fluctuating results due to the presence of diauxie phenomenon.

Keywords
bacteria, enzyme, pretreatment, rice straw, thermostable.

Topic
Other Agricultural and biosystems topic

Link: https://ifory.id/abstract/QWVYF8XNPHUf

Corresponding Author
Diah Rini Ratnaningsih

Institutions
Universitas Pembangunan Nasional Veteran Yogyakarta

Abstract
The governments policy in the food sector is to achieve food self-sufficiency in the context of national food security, whose priority is in the form of partiality to farmers to improve welfare. This policy cannot be felt yet by the farmers who live in Tayuban village, Panjatan Subdistrict, Kulonprogo Regency, because there are still obstacles in its implementation. The problem faced by farmers in this village in increasing crop production is the lack of availability of water sources for irrigating secondary crops, especially in the dry season. The lack of water availability causes plant productivity to be low, so that farmers income is low. To overcome the problem of water shortages, a surface geological survey was carried out as a preliminary study to find out the watershed (DAS) and identify the hydrogeological system of the study area. Based on watershed and hydrogeological systems data, in turn engineering can be carried out to meet water supply for irrigated agricultural land.

Keywords
Surface Geological Survey, Hydrogeological

Topic
Geology

Link: https://ifory.id/abstract/dKYFxPDp8wec