Indonesia Conference Directory

Corresponding Author
Endik Hidayat

Institutions
a) Faculty of Social and Political Science
Universitas Wijaya Putra
Jalan Raya Benowo 1-3 Surabaya
b)Faculty of Social and Political Science
Universitas Wijaya Putra
Jalan Raya Benowo 1-3 Surabaya

Abstract
This study based on the different understandings about political activities in the villages. This study aims to prove oligarchy in electoral process to elect village leader (headman) in Indonesia is different compare to other elections at the local and national level. By applying qualitative research method and looking at the case of Tanjung village, Pagu District, Kediri Regency. The study shows that all candidates have tried to maximize the benefit of both material resources and non-material power according to Javanese values. However, the use of money and formal institutions as the basic character of oligarchy as indicated by some scholars is not effective in gaining votes in the headman election. On the contrary, the application of non-material power used by the elected headman election candidates proves as more effective to attract more votes. The source of non-material power is parallel with Javanese power derived from mystical energy of -kesakten-, and it works effectively to increase contestants- confidence in embracing the headman election. Various forms of political strategy based on spiritual power are divided into six categories: Slametan ceremony at the village founders grave, pitou services come from religious leader and dukun, ownership of heirlooms, pulung as a legitimacy of power, petungan Javanese calendar system, luri son of the village head.

Keywords
Political Strategy; Power Sources; Local Politics; Democracy Village

Topic
Local Politics and Decentralization

Link: https://ifory.id/abstract/9yxRYBPrKw3D

Corresponding Author
Retno Damayanti

Institutions
Department of Agricultural Engineering, Faculty of Agricultural Technology, Universitas Brawijaya, Malang, Indonesia
*damayanti[at]ub.ac.id

Abstract
Tomato is widely consumed in Indonesia and have highest nutritional content of vitamin C. Vitamin C can be generally analyzed at laboratory which takes a long time and could be destructive. The maturity level of tomato is determined by changes in skin surface color. One technique that can be used to measure the tomatoes maturity by digital images. Digital image processing techniques can be non-destructively to analyzed vitamin C content. Vitamin C in tomatoes, design the system automatically, simple and practical with a small dimension scale on digital images, and perform performance testing of vitamin C prediction on tomatoes based on tomato skin color. The digital image processing uses Arduino UNO and TCS3200 sensors. The performance test and the database input will be tested using 10 pieces of raw, undercooked and cooked tomatoes. The resulting design can be used automatically, simply and practically cause design have dimensions of 19 cm high and 15 cm long with 350 grams of weighing. The toll is can be used in a practical manner and assisted by a 7800 mAh power bank and the output of 5v as a component power . The results of performance testing show that it can detect vitamin C content based on the database by obtaining a success rate of 93%.

Keywords
Image Processing; TCS3200 Color Sensor; Tomato; Vitamin C.

Topic
AGRICULTURAL ENGINEERING

Link: https://ifory.id/abstract/7qnVTyPrdzQ8

Corresponding Author
Zaenal Hirawan

Institutions
Fakultas Ilmu Administrasi Universitas Subang
Zaenal_hirawan[at]unsub.ac.id dan masnugroho[at]unsub.ac.id

Abstract
ABSTRACT This aims study to analyze the implementation of fiscal decentralization, especially on Subang regional Revenue from legitimate regional income sources. This study used descriptive qualitative method. The data taken is primary and secondary data. The data collected is by conducting in-depth interviews and documentation. Data were analyzed using descriptive analysis techniques, data analysis, and tested its validity by checking, checking back and cross checking. The results showed that Subang Regional Revenue originated from local tax revenues with a growth rate of 25.83% from 2016-2017. However, in terms of the contribution of PAD to regional revenues, the average is only 15.69%. While the realization of regional revenues is more dominantly derived from the General Allocation Fund, an average of 53.98%. This shows that the moment of fiscal decentralization and financial independence of the Subang Regency area still depends on assistance from the central government Keyword: Fiscal Decentralization, Regional Finance, Regional Revenue, Government Transfer Fund

Keywords
fiscal decentralization, local finances, local revenue

Topic
Local Politics and Decentralization

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

Corresponding Author
Kiki Fibrianto

Institutions
1Brawijaya Senso-Gastronomy Center, Faculty of Agricultural Technology, Brawijaya University, Jalan
Veteran, Malang 65145, Indonesia
2Faculty of Pharmacy, Airlangga University, Jalan Dharmawangsa Dalam 4-6, Surabaya 60286, Indonesia

Abstract
Traditionally, the mature coffee leaves is mostly used as compost or cattle feed. The leaves have also been traditionally processed as herbal tea in which popular in West Sumatera as Kahwa tea. This current study aims to characterize the sensory profile of Robusta and Liberica coffee leaves tea using Rate All That Apply (RATA) method. Not only profiling, but optimizing the sensory attributes of the coffee leaves tea is also required. The sensory optimization was conducted by applying Just about Right (JAR) method. Both RATA and JAR evaluation were involving 110 consumer respondents. All coffee leaves tea was brewed by decoction technique ranging from 85 - 100oC. There are 7 out of 27 sensory attributes which were significantly affected by brewing temperature. These are sweet flavor, burnt flavor, earthy flavor, woody flavor, sweet and bitter taste, and astringent mouth-feel. Penalty analysis of JAR data shows that sweet taste, bitter taste and astringent mouth-feel of Robusta coffee leaves were optimum at 95 oC. Meanwhile Liberica coffee leaves tea was optimum at 85 oC for most attributes except woody flavor. To some extent, the changes of sweet, bitter taste and astringent mouth-feel attributes are correlated to caffeine and total phenolic compound.

Keywords
coffee leaf tea, Robusta, Liberica, RATA (Rate-All-That-Apply), just–about-right (JAR)

Topic
AGRICULTURAL PRODUCT TECHNOLOGY

Link: https://ifory.id/abstract/kmJH6MPB4unp

Corresponding Author
Ayuning Budiati

Institutions
untirta

Abstract
E-administration in Indonesia has an important role in public service deliveries. It is more efficient, effective, transparent and accountable by using e-administration. However, lack of infrastructure, leaders commitment in an integrated way in all areas in Indonesia, human resource e-literacy and bureaucratic and working culture are still occurred in Indonesia. This research uses qualitative method and descriptive analysis approach. Data and information are from literature review and interview some informans. By using theory u that consists of sensing, presencing, and co creating moreover by using Quintuple Helix then e-administration implementation in Indonesia can be improved.

Keywords
Key words: e-administration, Indonesia, theory u, Quintuple Helix

Topic
Digital Governance and Citizenship

Link: https://ifory.id/abstract/V4KD7uXkcjhT

Corresponding Author
sukardi sukardi

Institutions
Universitas Brawijaya

Abstract
The study was conducted to determine the role of pulsed electric field (PEF) as pre-treatment on the extraction of phenolic compounds from basil (Ocimum americanum L.) leaves. The research used Randomized Block Design (RBD) with 2 factors, factor 1: exposure times (10, 15, and 20 seconds) and factor 2: voltages (1000, 1500, and 2000 volt). Extraction was done by maceration using 80% ethanol with temperature of 50oC. The results showed that PEF treatment had an effect on total phenolic compounds (TPC), phenol yield and antioxidant activity (IC50) of basil extract. The sample treated at exposure time of 10 seconds and voltage of 1500 volt obtained TPC of 260.50 mg GAE/g, phenol yield of 1.91 % and IC50 of 35.96 ppm. Whereas the untreated sample (without PEF) obtained TPC of 193 mg GAE/g, phenol yield of 0.86 % and IC50 of 166.78 ppm. The data showed that PEF treatment before the extraction of basil leaves can increase total phenolic compounds by 1.4 times, phenol yield by 2.2 times, and antioxidant activity by 4.6 times.

Keywords
Basil; PEF; phenolic compound; antioxidant;

Topic
AGROINDUSTRIAL PRODUCTION SYSTEM MANAGEMENT AND REGULATION

Link: https://ifory.id/abstract/UWf6K832CTwJ

Corresponding Author
Andi Luhur Prianto

Institutions
a) Department of Government Studies, Faculty of Social and Political Sciences Universitas Muhammadiyah Makassar, Indonesia
Jl. Sultan Alauddin No.259 Makassar, Indonesia 90221
*luhur[at]unismuh.ac.id
b) Department of Government Studies, Faculty of Social and Political Sciences, Universitas Pancasakti Makassar, Indonesia
Jl. Jl. Andi Mangerangi No.73, Makassar, Indonesia 90132

Abstract
The wealth of natural resources can be both a blessing and a curse. In various places, the struggle for access to natural resource actually triggers to conflict and violence. This research aims to explore the process of transforming mining conflicts, which involve corporations with local indigenous communities. The gold mining operation that obtained legal permits from the local government was rejected by the local community. This resistance transformed from the social resistance to finally become the political resolution from the local authority. This research was conducted in several individuals and institutions, where they were involved in the resistance movement rejecting gold mining activities in Bonto Katute Village, Sinjai Regency Indonesia. This research is qualitative and data collection through literature studies and field research using observations and interviews and analyzed with interactive models. The results of study showed that the relationship of conflict between the corporation and the local indigenous community was communal level and later developed into a collective movement. The conflict was triggered by the refusal of local indigenous communities to issue mining exploration permits for the corporations, which were considered not transparent and participatory. The change in the strategy of the resistance movement was influenced by efforts to negotiate, mediate and consolidate which were less successful. The strong pressure from the social resistance movement in the form of civil society alliances eventually turned into a political resolution movement, through the decisions of local power institutions.

Keywords
social resistance; political resolition; conflict; mining

Topic
Conflict and Reconciliation

Link: https://ifory.id/abstract/Gbj8BNrPvZfg

Corresponding Author
Kiki Fibrianto

Institutions
1Brawijaya Senso-Gastronomy Center, Faculty of Agricultural Technology, Brawijaya University, Jalan Veteran, Malang 65145, Indonesia
2Faculty of Animal and Agriculture Sciences , Diponegoro University, Jl. Prof. H. Soedarto, S.H. – Tembalang Semarang, Indonesia 50275

Abstract
Kombucha is a fermented drink made from liquid tea. The fermentation is involving bacteria and yeast (SCOBY). The current study aims to investigate the possibility of coffee leaf tea as a raw material for kombucha and to determine the characteristics of coffee leaf kombucha at the optimum antioxidant activity level. This study uses RSM (Response Surface Method) by considering the length of fermentation between 0 and 21 days. The results of fermentation duration optimization showed that the fermentation time for 3 days resulted in optimum IC50 antioxidant activity. The results showed that withering treatment significantly affect the pH values, total sugar, total phenol, and IC50 of young coffee leaf kombucha. The sensory quality also shows that 5 out of 19 attributes, including brown color, sour taste, bitter taste, alcoholic aroma, sour aroma are also affected by the treatment (p-value<0.05). Regardless the chemical and sensory qualities, the kombucha was still significantly accepted (p-value<0.05) by the respondents.

Keywords
kombucha; young robusta coffee leaf, RSM

Topic
AGRICULTURAL PRODUCT TECHNOLOGY

Link: https://ifory.id/abstract/Y34GeqfjUmxH

Corresponding Author
Titi Darmi

Institutions
(a*) Faculty of Social Sciences and Political Sciences, Muhammadiyah University of Bengkulu, Jalan Bali Bengkulu City.
*titi.harmadi[at]gmail.com
(b) Faculty of Economics, Muhammadiyah University of Bengkulu, Jalan Bali Bengkulu City.

Abstract
This article analyzes the political role of the Muhammadiyah organization in improving the economy of the village community. The focus is to observe the extent of the contribution of the institutional organization of the Muhmmadiyah branch in the Seluma district to the resources around the Muhammadiyah branches. The stages of the research were carried out by conducting interviews with Muhammadiyah leaders and checking these statements with the conditions in the field. Data was analyzed using SWOT. The results of the study indicate that Muhammadiyahs political role as the largest organization has not been carried out maximally. Management Resources in the form of government policies, that is, the existence of the Village Fund policy has not become an institutional strategic opportunity for the Muhammadiyah branch in optimizing its political role

Keywords
Muhammadiyah, politics, village society, economics and resource management

Topic
Local Politics and Decentralization

Link: https://ifory.id/abstract/Ye7Dzw29hkHQ

Corresponding Author
Hyldegardis Naisali

Institutions
a) Departement of Agricultural Product Technology, Faculty of Agricultural Technology, University of Brawijaya, Malang, Indonesia 65145.
*hylde3naisali[at]gmail.com
b) Departement of Agrotecnology, Faculty of Agriculture
University of Timor, Timor Tengah Utara, Indonesia 85613

Abstract
Kacang nasi is one of the local potentials of Timor Island, East Nusa Tenggara Province with abundant amounts, but its utilization is still lacking even though the nutritional content of kacang nasi is equivalent to soybeans. Kacang nasi are usually for Timorese people cooked with jagung bose for a long time so that it decreases the nutrient content. The amount of nutrient content of kacang nasi seeds is equivalent to soybeans but kacang nasi have a low protein content. One way to increase kacang nasi protein content, product diversification was carried out. Tempe is a fermented soybean seed by Rhizopus sp. mold shaped compact solid, distinctive smell and white. Tempe is a nutritious food, a cheap source of protein and easily accessible to all levels of society. This study aims to determine the level of consumer acceptance of kacang nasi tempeh compared to soybean tempeh. The method used is a hedonic scale method 1-5 (dislake-verylike) with sensory attributes including color, aroma, texture, and taste. The evaluation sensory results of the two types of treatments were significantly different between attributes

Keywords
Kacang nasi, Tempeh, sensory, comparation

Topic
AGRICULTURAL PRODUCT TECHNOLOGY

Link: https://ifory.id/abstract/28NkPE7wUepB

Corresponding Author
Tiara Kumala

Institutions
Faculty of Agricultural Technology, University of Brawijaya, Malang

Abstract
Nutritional trends towards a healthier diet have encouraged the consumption of whole wheat bread. However, the use of whole wheat flour to make bread has disadvantages of having a bad texture which is hard, not springy, non-uniform pores and has a higher level of staling. Glucomannan can affect the level of hardness, springiness, cohesiveness and inhibit the staling process by forming a gel thet will absorb water which can easily hold the gas during fermentation. this causes bread to have a uniform pore with soft crumbs so that the hardness value and staling process decreases. This research aims to examine the properties of mixture of whole wheat flour with high, medium and low protein flour modified by 0.5%, 1% and 1.5% of glucomannan gel to improve the physical and organoleptic properties of the bread. The data obtained were tested statistically with α = 5%. The best proportion was mixture of high protein flour and whole wheat flour with 1.5% glucomannan concentration. This produces bread with 3.5375 N of hardness, 4.3900 mm of elasticity and 0.8525 of cohesiveness and becomes the most preferred bread by panelists. Bread with this formula undergoes a staling process longer than wheat flour without added glucomannan. The staling process began on the 3rd day and has increased by 21,87% from day 1 with a hardness value 26.65 N. On visual observation, breadcrumbs occur on 5th day. Therefore, the addition of glucomannan is able to improve the texture and can inhibit the process of staling on bread.

Keywords
whole wheat bread; glucomannan; staling process

Topic
AGRICULTURAL PRODUCT TECHNOLOGY

Link: https://ifory.id/abstract/A2RHTF4CfVEP

Corresponding Author
maya asih rohaeni

Institutions
Universitas Pendidikan Indonesia

Abstract
Abstract, the purpose of this research is to develop an integrated science teaching materials oriented socio-scientific issue pollution theme used for practice critical thinking skills of students of 7th grade through Four Steps Teaching Material Development (4S TMD). This study used the Research and Development (R & D). The development of teaching materials consisted of a selection stage, structurization, characterization and didactic reduction. Based on the feasibility study, teaching materials have met the eligibility aspect of content, presentation feasibility, feasibility, and feasibility of graphics language. Characteristics of teaching materials include the presentation format of teaching materials, the approach of theme-oriented socio-scientific issues, critical thinking skills, compliance with the standards of teaching materials BSNP. Based on the test understanding, jar material fulfils the understanding with a high category. The research in the form of integrated science teaching materials oriented socio-scientific issues in the form of a text-book with the theme of pollution which has gone through four stages of development. These materials can be used as supplementary teaching materials for science teaching.

Keywords
Teaching materials, Integrated Science, pollution themes oriented to socio-scientif issues, critical thinking skills, 4S TMD

Topic
Science Education

Link: https://ifory.id/abstract/9YPvb4CeNFtm

Corresponding Author
Cita Mahardika Hariyono

Institutions
a) Department of Agricultural Product Technology, Faculty of Agricultural Technology, Brawijaya University, Malang 65145, Indonesia
b) Biotech Center, Agency for the Assessment and Application of Technology (BPPT), Tangerang Selatan 15314, Indonesia

Abstract
In fish aquaculture, feed cost has the highest share in the total cost during the production period. The increase in the prices of fishmeal and high cost of industrial fish feed have prompted the search for alternative to commercial feeds. Some research looking for farm-made feed that spending less money on operating costs and easy to apply method. This farm-made fish feed using simple equipment, locally available material, and inexpensive bio-floating agents. This innovation will decrease operating costs and increased profit since fish farmers can make fish feed by themselves. Black soldier fly larvae meal, produced from the larvae of insect Hermetia illucens, has shown promise as a fish meal replacement in diets for fish. Insects has good nutritional value, cheap to produce, and has no conflict with human consumption. In this research, Rhizopus oryzae used as bio-floating agent on the fish feed. Rhizopus oryzae could give certain physical and chemical properties on fish feed such as floating ability, water stability, and also nutritional content due to its metabolic activity. This research is aimed to obtain the optimal fermentation period and inoculum dosage to improve physical characteristic and nutritional value of fish feed. The results showed that fermented floating feeds gained better physical characteristic and nutritional value (p<0.05). Thus, using Black soldier larvae meal might be a feasible alternative protein source for replacement of fish meal. Rhizopus oryzae fermentation also has a potential to be further developed as bio-floating agent and increase nutritional value of fish feed.

Keywords
Fermented fish feed; Rhizopus oryzae; Bio-floating agent; Physicochemical

Topic
FISHERIES AND MARINE RESOURCES TECHNOLOGY

Link: https://ifory.id/abstract/9gFYJxtwEKD4

Corresponding Author
Nurhayati Nurhayati

Institutions
Universitas Pendidikan Indonesia

Abstract
Abstract. This research is a correlational research that aims to obtain an overview of the correlation of mathematical resilience to the mathematical problem solving abilities of senior high school .This research was conducted in SMA Negeri 1 Klari class XI IPA 2 even semester in academic year 2018-2019. The method used is expose facto. The population taken is all student of class XI SMA Negeri 1 Klari. Sampling using purposive sampling technique, which is a determination and sampling technique determined by the researchers with certain considerations. The sample consists of 36 student. The material used is function derivative. The instrument of this research is test item of mathematical problem solving abilitiy as 6 items and scale of mathematical resilience of 40 statements. The conclusion obtained are that student have difficulty in solving mathematical problem solving question and there is a significant correlation between mathematical resilience of students- mathematical problem solving abilities equal to 0,819.

Keywords
Mathematical Resilience, Mathematical Problem Solving Abilities

Topic
Mathematics Education

Link: https://ifory.id/abstract/9N4aGE68mzRk

Corresponding Author
Retno Astuti

Institutions
1Department of Agroindustrial Technology, Faculty of Agricultural Technology, University of Brawijaya, Jalan Veteran, Malang 65145, East Java, Indonesia
2Department of Business Administration and E-Commerce, Faculty of Commerce and Business, P. O. Box Tulkarem - Jaffa Street 7, Palestina Technical University - Kadoorie, Palestin

Abstract
The awareness of consumers about environment has been increasing considerably. Green marketing mix is one of strategies for producers to meet the need of consumers. This study aimed to develop a theoretical structural model representing the influences of green marketing mix on purchasing decision. The conceptual framework was empirically tested using Partial Least Square (PLS) method based on a survey of 42 consumers of mozzarella cheese produced by CV. Brawijaya Dairy Industry (BRADY) in Malang City, Indonesia. Data were collected using questionnaires given to respondents who were taken by purposive sampling. Exogenous latent variables in this study were green product, green price, green place, and green promotion as variables of green marketing mix, meanwhile endogenous latent variable was purchasing decision. The results showed that green product, green price, and green promotion influenced significantly on purchasing decision. Green place did not influence significantly on purchasing decisions because the consumers who are mostly snack producers did not consider the distance of the marketplace. They usually bought BRADY mozzarella cheese with other ingredients for snack production. They saved more energy by buying BRADY mozzarella cheese at one-stop-shop of ingredients for snack production although it was sold at a little bit far marketplace. The most influential variable of green marketing mix on purchasing decision of BRADY mozzarella cheese was green product because the ingredients of the product were toxic-free.

Keywords
green product, green price, green place, green promotion, purchasing decision

Topic
AGROINDUSTRIAL PRODUCTION SYSTEM MANAGEMENT AND REGULATION

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

Corresponding Author
Maruf Maruf

Institutions
*Program Studi Pendidikan IPA, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr.SetiaBudhi No. 229, Bandung 40154, Indonesia.
Departemen Pendidikan Teknik Mesin, Universitas Pendidikan Indonesia, Jl. Dr.SetiaBudhi No. 229, Bandung 40154, Indonesia.
Departemen Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr.SetiaBudhi No. 229, Bandung 40154, Indonesia.
*Program Studi Pendidikan Fisika, Universitas Muhammadiyah Makassar, Jl. Sultan Alauddin No. 259, Makassar 90221, Indonesia.

Abstract
This study aims to get an depict of the ability to solve the problem of contextual physics possessed by prospective physics teacher. The research method used is quantitative descriptive. The research subjects were 32 prospective physics teacher (18 female and 14 male) at one of the private universities in South Sulawesi. The instrument used for data collection is a test of the ability to solve contextual physics problems. The problem-solving sheet that covers the stages of problem-solving such as problem description, relevant physics law/concept, analysis of relationships between related physical variables, applicable mathematical representations, constraints according to problems, execution, and evaluation of logical results of problem-solving, used as a vehicle for doing problem-solving. The results of the study show that: 1) most students of physics teacher candidates who are the subjects of research have problem-solving abilities in the low category, 2) there is no gender bias in the ability to solve contextual physical problems. The low ability to solve the contextual problem of physics is thought to be closely related to the basic physics course process which is held less train the ability to solve the contextual problem.

Keywords
The problem solving ability, basic physics content

Topic
Physics Education

Link: https://ifory.id/abstract/Lz3qyXeUvtGP

Corresponding Author
Heptari Elita Dewi

Institutions
a) Agricultural Socio Economics, Faculty of Agriculture, University of Brawijaya, Indonesia

Abstract
Effective layout in agro-industry is an important agro-industrial production management system that can expedite the production process and reduce the potential risk of work accident in the production area. The objectives of this research were: (1) to identify the potential hazards and Occupational Health and Safety in Tempe Chips Small and Medium Enterprise (SME), (2) to analyze facility layout in Tempe Chips SME to shorten production lines and improve work productivity. Bu Nurjanah Tempe Chips SME Malang, East Java was selected as research location because of poor lay out system and it has same character with Tempe Chips SME that had fire accident. This research used Occupational Health and Safety Analysis and Systematic Layout Planning approach in designing agro-industry layout that consist of activity relationship chart, activity relationship diagram, and area needs. The results of the research showed that Tempe Chips SME has potential fire hazards and food contamination. Layout recommendations in accordance with Occupational Health and Safety standards included the fulfillment of production facilities such as: access to drinking water, toilets and laundry facilities, and clean cafeteria. First layout design had 13.3 meters track length by process link considering and second layout design had 12.5 meters track length that reduce material handling.

Keywords
layout design, Occupational Health and Safety, Systematic Layout Planning

Topic
AGROINDUSTRIAL PRODUCTION SYSTEM MANAGEMENT AND REGULATION

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

Corresponding Author
Rahmat Rizal

Institutions
a) Departemen Pendidikan fisika, Universitas Siliwangi
Jalan Siliwangi No 24, Tasikmalaya 46115, Indonesia
*rahmatrizal[at]unsil.ac.id
b) Sekolah Pascasarjana, Universitas Pendidikan Indonesia
Jalan Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The 21st century demands high quality human resources that can compete in global competition. The good quality human resources come from the good quality education process which train learner with skills to solve problems, to find alternative solutions in problem solving, and to think reflectively. These skills are included in creative thinking skills which is important to be developed for preservice physics teacher. This study aimed to identify the creative thinking skills of preservice physics teacher who have attended lectures of general physics, basic physics, and physics for school. By using the creative thinking skills test and interview, the researcher tried to explore four aspects of creative thinking consisting of fluency, flexibility, originality, and elaboration. The results of this study indicated the creative thinking skills of preservice physics teacher were in the low category with average score was 43.75 from a maximum scale of 100. The details of the average score of each aspect of creative thinking skills were expressed as follows fluency (57), flexibility (43), originality (34), and elaboration (41). The special lecture program is needed to improve the creative thinking skills of the preservice physics teachers to be able to train these skills to their students

Keywords
Creative Thinking Skills, Preservice Physics Teacher

Topic
Physics Education

Link: https://ifory.id/abstract/GAqy7tFa4pHj

Corresponding Author
NABEEL AHMED RAFAH

Institutions
Faculty of Medical Technology, Aljufra, Libya

Abstract
Crude extract of mangosteen (GarciniaMangostana L) pericarp (CEMP) possess many biological and pharmacological activities. The aim of this study is to analyse the effect of CEMP consumption for 3 weeks on lipid peroxidation as shown by malondialdehyde (MDA) level in cigarette smoke exposed rats. Twenty five Wistar male rats were randomly divided into five groups, i.e.: a normal control group, an exposed cigarette control group and three treatment groups. The treatment groups either received 200; 400; and 600 mg CEMP/kg body weight (BW), respectively. The diets in the form of pellets were freely consumed (ad libitum) and were given for three weeks. Rats were exposed to cigarette smoke one time per day. Blood samples were taken on the last day for MDA analyses. The MDA level statically analysis by ANOVA test and following by post Hoc test .After 3 weeks treatment, the mean MDA levels between groups were significantly differences (P=0.000). On day 21th, the MDA levels of control group , exposure by cigarette smoke group and groups that supplemented with 0; 200; 400 and 600 mg CEMP / kg BW were 0.126 ± 0.02; 0.637 ± 0.04; 0.423 ± 0.03; 0.235 ± 0.03 and 0.136 ± 0.03 μg/mL, respectively.It is also interesting to point out the decrease of the lung morphological damage by CEMP treatment. These results indicate the beneficial effect of CEMP in the MDA level reducing on the rats that exposed by cigarette.

Keywords
crude extract, mangosteen pericarp, cigarette, lipid peroxidation, MDA level

Topic
HEALTH, NUTRITION AND MEDICAL MICROBIOLOGY

Link: https://ifory.id/abstract/NjkB98CKQXMg

Corresponding Author
Eyus Sudihartinih

Institutions
Department of Mathematics Education, Universitas Pendidikan Indonesia
Jalan Dr. Setiabudhi No. 229 Bandung, Jawa Barat, Indonesia 40154

Abstract
The purpose of this study was to obtain an overview of the relationship and influence of IQ, gender, and the value of analytical geometry examination results on the ability to think geometry. This research was designed with a correlational model based on 32 students randomly selected from a mathematics education department at one of the universities in Indonesia. The test instrument used was "Van Hiele Geometry Test" which was compiled on the CDASSG Project. The findings in the study were that there was a correlation between IQ, gender, and the value of analytic geometry test results with a level of geometric thinking but not significant. In addition there is an influence between IQ, gender, and geometry values on the level of geometric thinking but not significant.

Keywords
intelligence quotient, ability to think geometry, van Hieles level, correlational research, mathematics education

Topic
Mathematics Education

Link: https://ifory.id/abstract/2Y6mBa7rPJgQ

Corresponding Author
Ahmad Syihab Fahmil Qowim Romadhon Mubarok

Institutions
Agroindustrial Technology, Brawijaya University

Abstract
Ice cream is frozen food derived from dairy products which are much in demand, especially children. PT. XYZ is one of the companies engaged in the field of ice cream food. The purpose of this study was to understand the implementation of material handling management at PT. XYZ especially in the calculation of material handling cost. Material handling process on cone ice cream products at PT. XYZ is the transfer of raw materials starting from the acceptance of raw materials to the storage of products in warehouse semi-finished goods. The material handling of cone ice cream includes details of process and displacement, machine and equipment used, layout, and calculation of material handling cost. By knowing the details of the correct material process, we could clearly know the material transfer from the raw material to the cone product that is ready for the ice cream filling process, resulting in good ice cream cone. The layout type applied in this industry is Product layout, while based on the analysis of material handling cost known material handling cost was Rp 7,344,5 / m,

Keywords
Ice cream, Material Handling, Material Handling Cost

Topic
AGROINDUSTRIAL PRODUCTION SYSTEM MANAGEMENT AND REGULATION

Link: https://ifory.id/abstract/bv6FMj3uQA9T

Corresponding Author
Nanang Priatna

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

Abstract
STEM stands for Science, Technology, Engineering and Mathematics are used in learning. The purpose of this article is to provide a perspective on STEM education and discuss what is needed to apply to Mathematics learning in Junior High School. To be effective in implementing STEM education, it starts with a good understanding of the STEM component, an interpretation of the meaning of STEM education, an understanding of the factors that need to be considered when implementing STEM education, and plans to develop and implement STEM education.

Keywords
STEM, Mathematics Learning

Topic
STEM Education

Link: https://ifory.id/abstract/mNg6hARzTHCW

Corresponding Author
Ariza Budi Tunjung Sari

Institutions
Indonesian Coffee and Cocoa Research Institute (ICCRI)

Abstract
Cocoa is one of important crops in Indonesia, whereas more than 90% of its plantation is operated by smallholder farmers. Cocoa beans, as the only sellable part of cocoa fruit, constitutes of less than 10% of the total weight of whole cocoa fruit. The remaining husk and pulp are usually discarded, and in certain case become source of pest and disease infestations. This has made a low economic value of cocoa agribusiness. A new approach in cocoa agroindustry is needed to increase the added value of cocoa; this is achieved by utilization of whole parts of cocoa fruit including cocoa husk, pulp, bean, cake and butter. Cocoa fruits from local farmers in Jember and Banyuwangi region were collected. The husks were separated and wet beans were processed into horizontal spinner to extract their pulp. Cocoa husks were chopped and processed into cattle feed. The pulp was stabilized and used as juice drink. Wet beans were straightly dried, heated and cleaned from shells to obtain nibs. Nibs were ground and pressed to separate cocoa butter which was supplied to chocolate candy and cosmetic industries. Remaining solids were soaked in ethanol for overnight to produce polyphenol-rich extract, for further use as antimicrobial agent. Feasibility study was conducted to evaluate the implementation of this production system in farmer level. A cluster of cocoa industry that involves farmer, cocoa processor and food industries should be established.

Keywords
agroindustry, cocoa, bean, husk, pulp, valorization

Topic
AGRICULTURAL PRODUCT TECHNOLOGY

Link: https://ifory.id/abstract/QCWHXTY823EK

Corresponding Author
Rina Febriana

Institutions
1,2,3Mathematics Education Department, STKIP PGRI Sumatera Barat, Jl. Gunung Pangilun, Padang 25143, Indonesia

Abstract
Inadequate textbooks, difficult language to understand and student-s low motivation became causing student scores on space geometry lectures to be low. This study aimed to develop problem-based learning based e-learning. The development used Plomp model consisting of 3 phases namely preliminary research, prototyping phase, and assessment phase. Those materials in e-learning were all materials existing Problem-Based Learning of Space Geometry module that were valid and practical. The instruments used were validity sheets, practical sheets and questionnaires. Data analysis technique used was descriptive qualitative and quantitative. The research shows that those contents of the module integrated into e-learning are categorized into valid and practical and result of Information and Technology expert validation states that requirements should exist in e-learning have also been fulfilled both in terms of construction and content

Keywords
Development, Problem-Based Larning, E-Learning

Topic
Mathematics Education

Link: https://ifory.id/abstract/EKZegacpR7Db

Corresponding Author
Retno Damayanti

Institutions
Department of Agricultural Engineering, Faculty of Agricultural Technology, Universitas Brawijaya, Malang, Indonesia

Abstract
Artificial neural network (ANN) based prediction system was presented for predicting the leaf population chlorophyll content from cassava leaf images. As the training of this prediction system relied heavily on how well those leaf green pixels were separated from background noises in cassava leaf images, a global thresholding algorithm and an omnidirectional scan noise filtering coupled with the hue histogram statistic method were designed for leaf green pixel extraction. With the obtained leaf green pixels, the system training was carried out by applying a back propagation algorithm. The system was tested to predict the chlorophyll content from the cassava leaf images. The results showed highest positive regression occurred in the saturation_HSL index against the total chlorophyll of cassava leaf as much as 78.6%. The best model produced through artificial neural network methods in predicting total chlorophyll is a network model with 8 inputs, 9 hidden layers and one output layer, in the proportion of training data 75% testing data 25% have value result the smallest MSE testing is 0.0921 with regression testing of 0.8468. Network model is able to read the highest source of chlorophyll on cassava leaf with 84.68%.

Keywords
Artificial Neural Network; Cassava leaf; Chlorophyll; Image processing.

Topic
AGRICULTURAL ENGINEERING

Link: https://ifory.id/abstract/g7PBxXedtqTG

Corresponding Author
Yuyun Maryuningsih

Institutions
SPS UPI, Tadris Biologi IAIN Syekh Nurjati Cirebon

Abstract
ICT skills are skills that prospective teachers must possess. Smartphones owned by all prospective teachers allow smartphones to be applied in ICT-based bleended learning. The purpose of this study was to determine the profile of ICT skills of prospective teachers through ICT-based learning on the concept of cell communication. ICT skills using the ETS framework ((Binkey et all, 2012) are measured in two ways, namely observation and self assessment on teacher candidates with the assignment of review articles. The results of the study show that prospective teachers are at the level of mastering independently for all ICT skill indicators, are basic, download, search, navigate, classify, integrate, evaluate, cooperate and create. This study can be concluded that prospective teachers have ICT skills as pedagogical skills.

Keywords
nformation and Communication Technologies (ICT) skills , Student teacher candidates

Topic
Biology Education

Link: https://ifory.id/abstract/26FTKwePAEvb

Corresponding Author
Ajeng Astrini Brahmanti

Institutions
Department of Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Brawijaya, Jl. Veteran, Malang, 65145

Abstract
Flocculating yeast strains with good fermentation ability are desirable for fuel ethanol production. The flocculation ability of Saccharomyces cerevisiae NCYC 1195 is known to be affected by the concentration of calcium chloride (CaCl2) and pH. Since the calcium ion activate flocculent by forming a bond with mannose in the cell-s surface. This flocculation ability is needed to avoid the cell mixed with the fermentation medium. It will settle down the cell in the vessel, thus, there will need no centrifugation in the purification step. By doing so, the bioethanol production process will be easier, more efficient and cheaper. The aim of this study was to investigate the effect of calcium chloride (CaCl2) and pH on the flocculation ability of S. cerevisiae. This research was conducted by using three levels of CaCl2 concentration (10-5, 10-7, 10-9 M) and three level of pH (4, 5, 6). The cultures were incubated in water bath shaker at 30°C with agitation (100 rpm). The flocculation assay was conducted every 4 hours during 24 hours and the stability of flocculation was observed every 24 hours within 30 days. The highest flocculation ability was obtained (73.155%) with CaCl2 concentration of 10-9M and pH 5.

Keywords
calcium chloride, flocculation, flocculent Saccharomyces cerevisiae, pH

Topic
INDUSTRIAL BIOTECHNOLOGY AND BIOPROCESSING

Link: https://ifory.id/abstract/M8P4HQdwmgBF

Corresponding Author
Yuyun Maryuningsih

Institutions
SPS UPI, Tadris Biologi IAIN Syekh Nurjati

Abstract
The use of the internet and smartphones in learning is binding because of its function which provides various learning resources. This study aims to determine the role of the internet as a learning resource for students on mastery of concepts, using a correlation design with correlational statistical tests to describe and measure the degree of association between two variables, namely the prospective duration of the online teacher and the acquisition of concepts. The subjects of this study were semester 5 (five) students majoring in biology education totaling 99 people at one of the universities in West Java. The study was conducted on Genetic learning in mobile learning with Gen 21 cs application in 3 (three) Genetic lecture activities. The results showed that online duration correlated with mastery of concepts. The highest correlation with a correlation value of 0.37 in the third activity, with the value of the level of significance of the category is low, which means that besides the duration of online there are other things that contribute to mastery of the concept of students

Keywords
Internet, smartphone, duration of online, mastery concepts

Topic
Biology Education

Link: https://ifory.id/abstract/LVkZzvrG3WUp

Corresponding Author
NUR LAILATUL RAHMAH

Institutions
Agro-industrial Technology
Universitas Brawijaya

Abstract
Pretreatment before conducted plant extraction using Pulsed Electric Field (PEF) has been reported improve the yield and quality extracts. The specific input energy of PEF is an energy needed for each unit of volume of material during the PEF process which is expressed in units of kJ / cm3. It was influenced by voltage and duration of PEF. In this study, the relationship between specific input energy using variation voltage and duration of PEF was studied on extraction of areca seed. This research examined tannin levels and changes in areca cell structure before and after PEF. Areca (Areca catechu L.) is one of the plants that contain phenolic compounds as tannin as antioxidant. To obtain this compound, it was required the extraction process of areca seeds. This research used Factorial Randomized Block Design with two factors. The first factor was PEF voltage with three levels of 3, 4 and 5 kV and the second factor was PEF duration with three levels of 3, 5 and 7 minutes. The obtained data was analyzed by ANOVA. The input energy of PEF from 1.92-12.44 kJ/cm3 did not show significant effect on tannin content of areca seeds extract. However, when it compared with control (without PEF), better results was obtained on the tannin content. Scanning Electron Microscopic analysis from areca seed powder showed differences structure between control and PEF treatment. This study indicates that PEF pretreatment offers great promise in tannin extraction.

Keywords
input energy, cell structure, tannin, PEF

Topic
AGRICULTURAL PRODUCT TECHNOLOGY

Link: https://ifory.id/abstract/yQ6dhnCD9Hfe

Corresponding Author
Shinta Mutiara Dewi

Institutions
(a) Master of Science Education, Universitas Mataram, Jl. Pendidikan No. 37, Mataram 83114, Indonesia
(b) Physics Education Study Program, Universitas Mataram, Jl. Majapahit No. 62, Mataram 83125, Indonesia
(c) Physics Education Study Program, IKIP Mataram, Jl. Pemuda No. 59A, Mataram 83125, Indonesia

*gunawan[at]unram.ac.id

Abstract
Teaching abstract concepts in experimental activities is one of the problems in the physics learning process, thus causing low levels of participation and mastery of students physics concepts. Generative learning assisted by a virtual laboratory can be an alternative to solve this problem. The purpose of this study was to examine the effectiveness of generative models assisted by virtual laboratories for mastering students physics concepts. The research and development used is based on the 4-D model. Test the effectiveness of learning devices through quasi experiments conducted at one of the high schools in Mataram, which consists of experimental and control classes. The model testing phase uses pretest-posttest non-equivalent control group design. Increased mastery of student concepts is measured using the N-gain test. The results of mastery of concepts were higher in the experimental class compared to the control class. Improvement is analyzed based on improvement at each cognitive level, as well as an increase in each sub-material. This research has proven that generative learning assisted by virtual laboratories effectively increases mastery of students physics concepts.

Keywords
Generative Learning; Virtual Laboratory; Mastery of Physics Concepts

Topic
Physics Education

Link: https://ifory.id/abstract/jF9K4YyJPrdL