bluuebunny/crossref_metadata_2025 huggingface dataset:
Unripe Papaya (Carica papaya L.) Aqueous Extract (UPAE) for the acute toxicity test on fatty liver changes
Authors: Kharisma Y , Rachmawati M , Indriyanti R A , Respati T
Published: March 2020

We investigated whether the oral ingestion of aqueous extract of unripe papaya fruit (UPAE), would also induce fatty liver changes by analysing the UPAE-treated mice qualitatively. This study used laboratory experiments which performed by a proposed (new) recommended method with 11 subjects of female mice which were administered with single oral doses of 0; 50; 200; 400; 800; 1, 000; 1, 500; 2, 000; 3, 000; 4, 000; 5, 000 mg/kg respectively. All these mice were euthanized after 24 hours of UPAE administration. Histopathological studies were conducted using liver samples which were stained by Haematoxylin-Eosin (HE). The UPAE did not cause death in all doses but did induce hepatic steatosis and steatohepatitis at 4, 000 and 5, 000 mg/kg dosages. Ballooning degeneration, necroinflammation and portal fibrosis revealed at 200 – 5, 000 mg/kg. These findings suggest that the UPAE provoked the fatty liver changes at the highest dose administration. It may be obtained from a multiple hit process by the accumulation of the phytochemical compounds of UPAE.
Waste processing technology for biodiesel fuel cooking oil using zeolite bayah catalyst
Authors: Fitriyah F , Pangesti F S P
Published: March 2020

The waste of household cooking oil is thrown away so that it causes environmental problems. Therefore, this problem must be responded to immediately, for example by processing household waste cooking oil into environmentally friendly biodiesel as an alternative method to address this problem. This study aims to make biodiesel from household waste cooking oil to eliminate or reduce levels of free fatty acids (ALB) contained in used cooking oil catalyst, namely Zeolite Bayah catalyst, while the temperature and reaction time is a fixed variable esterification reaction. The methods of this study are activated zeolite as a catalyst and mixed it with waste cooking oil. The results of this study indicate that the processing of used cooking oil using Zeolite Bayah catalyst can reduce the free fatty acid content contained in used cooking oil, and the physical characteristics of biodiesel generally meet the SNI-04-7182-2012 standard. So that it can be seen that the Zeolite Bayah catalyst influenced the process of reducing free fatty acids in used cooking oil, it can be concluded that some of the parameters are already included in the national standard 04-7182-2012, and it can be seen that the Zeolite Bayah catalyst density parameters obtained the results of 871, the density of NaOH catalysts obtained 862, while from the national standard 04-7182-2012, it was set at 850-890. Both of these results have met the standard for the quality of making biodiesel.
Test formulation of liquid organic fertilizer on growth and result of soybean plants
Authors: Herawati J , Indarwati I , Ernawati E
Published: March 2020

The objective of this research is to know the result of Liquid Organic Fertilizer (LOF) formulation on growth and yield of soybean crop. The hypothesis of this research is;(1) Suspected different LOF formulations provide different growth and yields of soybean crops;(2) suspected formulations F2 (LOF water hyacint + banana cobs) will have a better effect on the growth of soybean crop than other formulation;(3) suspected formulations F7 (LOF water hyacint + fish bone + chicken egg shell) will have a better effect on soybean crop yield than other formulations. The research was conducted by using Randomized Block Group Design with the following treatment: F = LOF Formulation; F0: without LOF (Control), F1: LOF water hyacinth (BioEcgon, F2 = BioEcgon + banana hump, F3 = BioEcgon + bone fish, F4 = BioEcgon + chicken egg shell, F5 = BioEcgon + banana hump + fish bone, F6 = BioEcgon + banana hump + chicken egg shell, F7 = BioEcgon + fish bone + chicken egg shell, andF8 = BioEcgon + banana hump + fish bone + chicken egg shell. From each treatment repeated 3 times, so it takes 27 plots of experiments (9x3 = 27) with a plot / plot of 18 m² (3x6). The parameters observed are plant height, number of leaves and dry weight of soybean seeds / ha. The data obtained were analyzed by Analysis of Variants (Anova), if there is a real difference followed by 5% BNT test. LOF application with various formulations is expected to improve the growth of soybean crops, so it can increase the yield of soy / ha, in the long term aims to increase land productivity and can prevent land degradation, as well as one solution in overcoming the problem of organic waste.
Local mineral formulas for supplementation of kacang goat’s feed based on wild forages, rice bran and sago stalk
Authors: Khalil K , Abbadiah A , Andri A , Evitayani E
Published: March 2020

Supplementation is required to satisfy mineral requirement of traditional grazing kacang goat. The present research was aimed to design of mineral supplement for better nutrition of kacang goat fed based on wild forages, rice bran and sago stalk. Crude nutrient and mineral composition of feed which are normally consumed or fed to kacang goat were analyzed for dry matter (DM), crude protein (CP), crude fibre (CF), and minerals (Ca, P). Samples of forages were collected from three areas, i.e. coconut plantations, banana plantations and idle lands. Mineral feed was then formulated by using locally available materials: Bukit Kamang’s stone powder, roasted fresh water mussel shell meal and bone ash. The local minerals were prepared in loose and block forms and offered to 12 young kacang goat males for 14 weeks in three treatments: P0: no supplementation (control), P1: supplemented with loose local mineral, and P2: supplemented with block local mineral. Each treatment consisted of 4 goats as replication. Parameters measured included: body weight gain, feed intake, feed conversion ratio (FCR), blood minerals (Ca, P), blood hematology (hemoglobin [HGB], mean corpuscular Hb concentration [MCHC], total red blood cell [RBC], white blood cell [WBC], hematocrit concentration [HCT]) and total protein. Results showed that there were seven kinds of wild forages consumed by grazing goat. The average crude nutrient and mineral content of the forages were as follows: DM: 17.2%, CP: 16.5%, CF: 18.20%; Ca and P: 4.5 dan 2.1g/kg DM, respectively. The average daily body weight gain was 35.4, 31.7 and 41.2 g/head, and FCR was 22.8, 26.0 and 21.3 for P0, P1 and P2, respectively. The mineral concentration, total protein and hematological values of blood of P2 ranged in normal values, except WBC. It was concluded that mineral supplementation in block lick form gave positive effect on growth performance and feed utilization efficiency.
Comparison of flavonoid from clove leaf oil cytotoxic activities with doxorubicin and cisplatin on liver cancer cell culture
Authors: Tejasari M , Respati T , Trusda S A D , Hendryanny E , Yuniarti L
Published: March 2020

In the development of new drugs as candidates for cancer therapy agents, cytotoxic testing is needed as an initial screening to determine the effect of a natural substance in inhibiting tumour cell growth. One of the active compounds of flavonoid derivatives that are being studied as anticancer is a compound derived from clove leaf oil. The purpose of this study was to determine the cytotoxic activity of flavonoid compounds from clove leaf oil on liver cancer cell culture and make comparisons with standard drugs for cancer therapy. Examination of cytotoxic activity was carried out on HepG2 cell line culture used MTT method. The absorbance of each well was measured with spectrophotometer at a wavelength of 595 nm. The absorbance results were calculated to create a cytotoxic curve. Based on the cytotoxic curve, IC50 values of flavonoid compounds, doxorubicin and cisplatin were 50.62μg/mL, 20.25μg/mL, 15.42μg/mL respectively. Those showed that flavonoid compounds from clove leaf oil have strong anti-cancer activity (IC50<100μg/mL) against liver cancer cells. It was concluded that flavonoid compounds isolated from clove leaf oil were shown to have anticancer activity on liver cancer cell and thus could be used as a new candidate for liver cancer therapy agents.
Antibacterial effect potention of n-hexane fraction of rose apple leaves
Authors: Suwendar S , Mulqie L , Choesrina R , Mardliyani D
Published: March 2020

This research was an attempt to prove scientifically about the antibacterial effect potention of n-hexane fraction of rose apple leaves [Eugenia aqueum (Burm. F) Alston]. The aims of this research were to determine the value of minimum inhibitory concentration (MIC) and type of effect as antibacterial from n-hexane fraction of rose apple leaves. Evaluation of antibacterial effect potention was carried out by diffusion method using well techniques on Staphylococcus aureus and Escherichia coli. Antibacterial effect was determined based on Bell’s criteria. The type of work against bacteria was evaluated by turbidimetry method. The results showed that the n-hexane fraction of rose apple leaves have antibacterial effect both against S. aureus and E. coli. The MIC of n-hexane fraction of rose apple leaves on S. aureus and E. coli were 1.56% and 6.25% respectively. The type of effect of n-hexane fraction of rose apple leaves were bactericidal both against S. aureus and E. coli.
Healthy home’s model for rural people with Analytical Hierarchy Process (AHP) in Kabupaten Ngawi, Indonesia
Authors: Rini T S , Rejeki F S , Purwaningrum S W , Wahyuningtyas E , Saurina N
Published: March 2020

For many years, the housing environment has been acknowledged as one of the main settings that affect human health. Living and housing conditions are the basis of many factors influencing residential health. Risk and environmental factors in house building that can affect the incidence of diseases and accidents include ventilation, lighting, density, humidity, animal transmitting diseases, clean water, household waste, to the inhabitants of the house. This study is to measure criteria for rural people in Kabupaten Ngawi, Indonesia, whether including healthy home or not using AHP. Parameter measurement of healthy home in this research developed parameter which have been done by Ministry of health department, which use three parameters namely the components of the house; sanitation facilities; the behaviour of the residents in healthy living. This study adds three parameters the behaviour in processing household waste; drainage; and physical path. These additional parameters have been approved by the head of the health office in Kabupaten Ngawi. This method uses analytic hierarchy process (AHP) to measure healthy home’s model result three values i.e. Lamda, Consistency Index, Consistency Ratio. The results show that healthy home for Kabupaten Ngawi with Global Priority value are 0.489792978, Medium Healthy Home with Global Priority value are 0.264061054 and last Unhealthy Home with Global Priority value are 0.246145969.
Durability based service life prediction of bacterial concrete
Authors: Prabowo H
Published: March 2020

Concrete durability is one the essential factors effecting the service life of structures. The problem in durability of structures not only gives great impact on the functionality of the structures themselves but also on their environment. The maintenance and repair process resulting from the problems will consume a lot of energy and resources. The use of bacteria as an effort for repairing concrete cracks becomes popular recently. Crack formation is a common problem in many concrete structures. Durability problems may rise due to these cracks usually reducing concrete integrity and permeability. There are many degradation mechanisms affecting concrete performance, two of them are carbonation and chloride ingress. Several researches prove increased resistance towards those two mechanisms. This paper is aimed to simulate service life of bacterial concrete based on carbonation and chloride ingress mechanisms incorporating carbonation rate constants and chloride migration coefficients. It is concluded that the utilization of bacteria in concrete is prospective in increasing the durability of concrete structures.
How does leadership factors spur the success of sister city cooperation?
Authors: Rochman G P , Hudalah D
Published: March 2020

Some scholar indicated the leadership factors contribute to the success of sister city cooperation. However, research on the extent of its contribution is still limited. To fill this gap, an investigation of leadership factors was carried out through in-depth interviews with key actors who played a role and were directly involved during the process of sister city cooperation. This study examines the mechanism of local leaders which succeeded in building and implementing sister city cooperation to solve city problems. We found that local leaders designed sister city project or activities according to local needs and characteristics by involving academics and local communities, maintained and developed cooperation consistently and continuously by forming sister city management team, and encouraged community collective action to implement sister city cooperation through direct communication and incentives. The results of this study enrich the knowledge of leadership roles in city management and provide lesson learned for leaders of cities in the world.
Compressive strength and modulus of elasticity of concrete using iron fibers
Authors: Layang S , Wiratno W
Published: March 2020

This paper presents the effect of using iron fiber to the value of compressive strength and modulus of elasticity of concrete. The iron fibers used in the concrete mixture are 50 mm long and 5 mm wide which is the waste of the lathe. For this purpose, there are 5 variations of concrete mixture with iron fiber content of 0%, 6%, 8%, 10% and 12% of cement weight for each mixed variation. The test specimens used are cylindrical in diameter 150 mm and 300 mm in height. The value of fresh concrete slump is set in the range 100-140 mm. The value of compressive strength and modulus of elasticity of concrete was obtained from concrete cylinder testing after 28 days of curing. The test results showed that the concrete mixture with iron fiber content of 8% yielded the highest compressive strength from the variation of the mixture of concrete using iron fiber. The value of the modulus of elasticity of the concrete obtained from the test results shows the same trend with the elasticity value calculated using the empirical equation.
A computer-based system to support tourism in Bali, Indonesia
Authors: Suryanti A , Sugiartawan P , Welda W
Published: March 2020

The purpose of this research is to determine a favorite tourist destination in Bali with GDSS approach. The problem that occurs in Bali is the occurrence of a significant difference in tourist visits to each of the destination object. Ranking of tourism objects as a whole allows famous tourism objects determine by tourists. The ranking process using the approach of the Group Decision Support System (GDSS), it aims to combine the decisions of several tourists. The AHP model in GDSS is used to determine the weight of each criterion in each alternative, the TOPSIS model use for individual ranking of each tourist object and the BORDA model aims to classify individual ranking. The results showed that the Tanah Lot tourist attraction was ranked first with a difference in the value of more than half with other tourism objects, such as the Goa Gajah tourist attraction has the last rank. The results of the sensitivity analysis show that cleanliness and safety criteria are vital factors of tourism objects.
Designing an online-based questionnaire application for mobile devices
Authors: Pratama F H S
Published: March 2020

In a decision making and assessment, a lot of data is needed as a reference, the data needed can be obtained through filling out a questionnaire distributed to the community. With the rapid development of technology in the IT field, it is necessary to create a questionnaire application that is based online so that it can be accessed anywhere and anytime through the current mobile device. Online-based data storage needs are also important in a questionnaire, if all this time a questionnaire was made in paper form, in this paper we will discuss how to create an online questionnaire application. With the location of data storage also in online servers that can facilitate data processing. Application design is adapted to mobile devices that are currently owned by everyone. This paper aims to provide an effective and efficient solution for researchers, companies or individuals who want to use questionnaires as a method of data collection.
Vector machine to predict student retention: A computerized approach
Authors: Saraswati N W S , Widiartha K K , Prapitasari L P A
Published: March 2020

Student retention can be used as a measure of the university performance. Poor student retention would affect the university because it depicts a poor image of a university management. Student retention can be interpreted as the percentage of students who remain active until they are graduated and then we call these kind of students as active students. In this study, we conducted a research on students database to predict whether they are active or inactive students by using the Support Vector Machine and then at last, we as well measured the quality of the prediction model. We use first and second semester GPA, financial status, work status and student’s origin as predictor attribute. Prediction model that is developed from the student database of STMIK STIKOM Indonesia shown a good result with an accuracy level of 97, 46%. By excluding GPA from SVMs model, the performance of the model decrease. A model with all the attributes used in the classification provides a balance of positive and negative tuples of recognition compared to when one of attributes is omitted from the model.
A computerized system to evaluate freight transport performance in West Sumatera, Indonesia
Authors: Purnawan P , Fatra M S
Published: March 2020

Most of economic regional developments in Indonesia depend on freight transport system, efficient freight transport system would produce low cost of transport, it will affect on the price of good and the market. Freight transport in Indonesia is usually served by trucks, these mode has been identified as the transport mode that operate with high cost and inefficient. This paper shows the result of research on freight transport in West Sumatra that operated in Padang. This result is based from direct interview on 100 truck drivers in Padang. It shows that majority the trucks serve freight transportation between cities in West Sumatera and other Province in Sumatera island, most of goods that transported from Padang are construction materials. During deliver the goods, they require time about 1-2 days and always stop several times for break and eat. This is because the drivers drive the truck alone. The total operational cost spends during delivery to other province in Sumatera Island between Rp 1 millions - Rp 2 millions, there are illegal retributions for about 1-5% of operational cost, these retributions are conducted by person or organization. The Regulations that impede the performance of freight transport are prohibition of trucks enter the city in the morning and afternoon at peak hours.
The design a scenario of multimedia learning model based on synchronization between English lesson and ablution lesson
Authors: Azizah S , Huda M , Widiartin T , Maslihah M
Published: March 2020

Multimedia-based learning becomes a trend in schools that want their students to be able to absorb subject matter faster. Multimedia systems that are intended for learning must be designed to have a scenario that is aligned with the content of the lesson. In this research a scenario of multimedia-based learning model will be made using Data Flow Diagrams. The scenario model starts with Data Flow Level 0 which contains 3 processes, namely the learning process, the training process, and the quiz process. From the Data Flow Diagram Level 0, then the decompose process is carried out for each process to produce Data Flow Diagram Level 1. At level 1 Data Flow Diagrams for Learning Processes, 4 processes are generated, namely the process of Selecting Ablution Sequences, the Process of Show Ablution, Process Display of Physical Response, and Process of Display of Spell Speech. In the training process, 6 processes will be generated in the Level 1 Data Flow Diagram. In the quiz process, 4 processes will be generated in the Data Flow Diagram Level 1.
A document recommendation system of stemming and stopword removal impact: A web-based application
Authors: Parwita W G S
Published: March 2020

Stemming and stopword removal is process that requires a lot of resources in the text pre-processing. The resources used in stemming and stopword removal are directly proportional to the amount of stopword, text, and document. Elimination of stemming and stopwords is one of many options which can reduce process in document-based recommendation system. However, the elimination of stemming and stopword removal have an impact on the recommendation system accuracy. This study determines the impact of stemming and stopword removal in document-based recommendation system. The system used in this study is recommendation system that recommend final project supervisor based on similarity student preliminary research proposal (UPP) document and lecturers’ scientific publications. Student preliminary proposal and lecturers’ scientific publications are document in Bahasa Indonesia. This study begins with analysis to map out the components to be used in each recommendation systems testing. Then proceed with the rearrangement of recommended system components based on testing focus. The study result is precision, recall, and f-mesure values comparison between each recommendation system component elimination. Elimination of stemming and stopwords show that the elimination generates precision and f-measure value worse than the system with stemming and stopword removal. However, system with elimination give a better result at recall value. In the future study, recommendation system needs some development to improve the precision, recall, and f-mesure value with modification in stemming method using Sarawi project and increase the amount of lecturer’s publication.
A review of traditional arts in Batuan, Indonesia: How the computerized database makes an impact
Authors: Winyana I N , Yadnyawati I A , Sudiarsa I W , Mardiana P G E , Trisdyani N L P
Published: March 2020

One of the causes of traditional of Genggong performing arts becoming unpopular in the life of the Global community is the role that is not in favour of Genggong art like in Batuan Village. Genggong Batuan Sculpture Art in the 1973 era which is an abstract work of art. Distinctiveness and uniqueness of forms of work that are not sufficiently able to maintain popularity on the entertainment stage. Study of this paper Valid from qualitative methods designed to be used in more depth. Data analysis is done by observing the validity of data directly on the surface other than stored documents. The theory that addresses various forces is what is called in the realm of power and also the habitus that occurs in society. The final results of this study are findings related to the traditional educational process. Genggong is in fact not related to the activities of the entertainment community. The neglect that he caused was a lifestyle and structure that was not in favour of the art of Genggong Desa Batuan.
Blended E-learning on clinical skills learning from the medical student’s perspectives
Authors: Feriandi Y , Wasliman I , Hanafiah N , Budiman B , Putra A R , Rachmadini N , Putri C R , Yusuf K
Published: March 2020

With the rapid development of the internet, learning technology responds to the birth of e-learning with the vast use of a various Learning Management System (LMS) software to facilitate online learning in a structured manner. Moodle is an LMS developed by Martin Dougiamas which has four basic concepts, namely: constructivism, constructionism, social constructionism, connect and separate. Several studies have shown that learning reform that combines Moodle with conventional classes, shows an increase in student knowledge, attitudes, and behaviour. This study aims to compile a student’s perception on Moodle-based e-learning model in clinical skills learning in the Medical Faculty. This qualitative case study adopted the ‘define’ and ‘develop’ phases of the 4D model of a module development. The informants were 11 fourth-year medical students, at the academic phase of a medical school at Universitas Islam Bandung, Indonesia. This study was conducted using unstructured in-depth interviews and small group discussions. The verbatim data were transcribed using Microsoft Word and analysed using NVivo ver.12 software. Four major themes emerged from the define phase: teaching materials, training evaluation, student’s learning styles, and the weaknesses of the conventional clinical skills training. This research described that conventional way of clinical skills learning has many limitations and suggested that the use of e-learning based module such as Moodle, could be used as a blended learning approach and can cover the shortcomings of conventional learning methods in clinical skills teaching of the medical students.
A remote training of maternal knowledge and children health center: A multi-user application implementation
Authors: Nurhayati E , Rathomi H S , Fitriyana S , Ibnusantosa R G
Published: March 2020

The aim of this study was to compare the improvement of nutritional knowledge of maternal and children health centre cadres in Tamansari, Bandung through entrepreneurship and nutritional training. This was an analytical study with cross sectional approach that held while conducted a community service. Nutritional knowledge among the cadres measured using questionnaire pre and post the first phase of the training. The comparison analysed using Stata with dependent t-test. This study revealed that 24 cadres completed both pre and post questionnaire, other 3 cadres only returned one questionnaire. Based on the statistical analysis, there was a significance improvement on the level of nutritional knowledge after the training. The study concluded that entrepreneurship nutritional training can improve knowledge level on maternal and children health centre cadres.
Web-based application design for agile stakeholder communication
Authors: Rantung V P , Munaiscehe C P C , Rorimpandey G C , Sangkop F I , Pardanus R H W , Hoppenbrouwers S
Published: March 2020

An effective communication comes from good communication management. Agile service development has principles regarding to the communication management. The principles focus communications into a situation, thus the communications are well organized in operation so the communication will be effective and efficient. Aims of this research are to create communication management system which is appropriate for agile stakeholder to manage their communication during project development. The method used in this research is software development life cycle (SDLC). This research presents a web-based application design for Agile stakeholder communication support in order to help project developers in organizing and planning communication activities during project development based on Agile service development principles.
How to develop SETS-based electronic book to improve student’s science literacy with 4S TMD models?
Authors: Lestari O , Anwar S , Priscylio G , Wahyuni W S , Oktasari C , Agustina N R
Published: March 2020

This study aims to develop teaching materials on the rate of reaction based on Science, Environment, Technology and society (SETS) to improve students’ scientific literacy. The research method used is Developmental Research (DR) with Four Steps Teaching Material Development (4S-TMD) models. This article is the first part of the development of teaching material which includes selection and structuring steps. In the selection stage, the development of indicators that are in accordance with the demands of the curriculum, explains the concept of reaction rate using standardized textbook sources, and analyzes SETS which can be related to the concept of reaction rates. In the structuring stage consist of concept maps, macro structures and multiple representations are developed that connect between representations of macroscopic, sub microscopic and symbolic levels. The results of the selection and structuring steps are evaluated by expert lecturers. The results show that the teaching materials developed are in accordance with the demands of the curriculum, scientific certainty has been ensured and the phenomena presented are in accordance with the aspect of SETS and concept maps, macro structures and multiple representations developed are valid. The first part of the development of teaching materials which includes the selection and structuring steps resulted in a draft of SETS-based reaction rate teaching materials. Next step, we will doing characterization and didactic reduction stage to draft teaching material.
Empowerment for adults through digital skills enters the era of industrial revolution 4.0
Authors: Hidayat M R , Suryono Y
Published: March 2020

The development of the digital world in the era of industrial revolution 4.0 is very significant both in the world of education and the world of industry where it requires adaptation to be able to utilize it so that they remain productive to increase income. The purpose of this article is: (1) To know the empowerment of adults through digital skills entering the era of industrial revolution 4.0 by utilizing technology as an opportunity for their lives (2) The process of stages that adults do about understanding digital skills. The time of this study was conducted January-February 2019. This research was conducted in Sleman, Yogyakarta Special Region. This research model uses the Self-Directing Learning approach. The method used in this study is a qualitative method with data collection techniques through observation, interviews, questionnaires, and documentation. The subjects in this study were 23 online drivers. The results of this study indicate that (1) There is a significant favourable influence on empowerment for adults that has been carried out through digital skills (2) The process of stages carried out for adults to be able to improve and adopt the concept of digital skills through planning, socialization, training, implementation, evaluation, and assistance. With this empowerment, online motorcycle taxi company partners pay more attention to drivers by empowering them if there is a new menu. So that all drivers immediately find out the latest list published by online motorcycle taxi companies.
Digital pedagogical competence evaluation of teachers and strategies of school principals
Authors: Wulandari S A , Arifin Z
Published: March 2020

The pedagogical competence describes the capability of a teacher in learning at school and improving teacher’s pedagogical competence needs support from the principal. This study aimed to describe the principal’s strategy in improving teacher’s pedagogical competence. This type of research was qualitative. The data sources were principal and teacher in Sekolah Dasar Negeri 1 Sumbang. Interview and observation were used as instruments to collect the data. The steps of data analysis include data reduction; data validity; data display; and drawing conclusions. The results of this research indicates that the strategies undertaken by principals in improving teacher pedagogical competence include involving the teachers in seminar or training activities; participating in the activities of the teacher working group; and personal guidance based on the results of supervision of learning activities. The key to success in implementing this strategy is to create a conducive school climate.
Android-based application to evaluate gender differences in private high schools
Authors: Usman F L , Budiyono B , Indriati D
Published: March 2020

Whenever a person has an idea in his mind but the idea is intuitively unacceptable, he substitutes his idea which are intuitively more effective and efficient. The substitutes are called intuitive models. The approach used in this study is the qualitative approach with a type of explorative-descriptive. The purpose of this study is to describe the intuition of private vocational students in terms of gender where the students’ intuition is an intuitive model of students in solving mathematical problems with the PISA model. The subjects are mechanical engineering student in class XI of vocational high school and included high ability students in their class This research using task-based interviews and result of student. Based on the result of the research in using intuition models, female student more uses models than male student. Female student uses trial and error to stimulate ideas from understanding problem to finding solution while male student only writes important point for him and not easy to communicate his ideas. It’s found that intuition can occur anywhere in solving problems. The product results from intuition in the form of ideas obtained by intuition models which function as a means to make it easier for someone to understand objects or concepts that are intuitively difficult.
Digitalized curriculum distribution of Indonesian education
Authors: Noviandari H , Haryanto H
Published: March 2020

2013 curriculum is a simplified curriculum, using thematic integrative learning approaches, and in it contains about strengthening character education for students. This research aims to describe the management of 2013 curriculum in elementary school which includes the plan of the implementation and evaluation. This is a qualitative research by using case study approach. The subject of this research is the principal, the vice principal, curriculum, teachers, and students. The data of the research is collected by doing interview, observation, and document study. The data analysis is done descriptively. The result of this research shows that the management of 2013 curriculum in elementary school can be seen from three aspects. They are planning, implementation, and evaluation. The planning of 2013 curriculum is based on the policy that has been established by the government and the curriculum evaluation implementation from the previous period. The implementation of 2013 curriculum uses integrative thematic learning with scientific approach and is applied gradually. The evaluation of the curriculum is done in order to see the ability of achieving the goal and the feasibleness of 2013 curriculum by considering the analysis of student’s score and evaluation meeting in every end of the semester.
Re-evaluating and reinventing Bloom’s taxonomy using an internet-based application
Authors: Kurniawati S , Budiyono B , Saputro D R S
Published: March 2020

The development of mathematics learning today requires students to improve their thinking skills. One of them is the Higher Order Thinking Skill (HOTS). HOTS in this study is based on the revision of Bloom’s Taxonomy, namely C4 (analysing), C5 (evaluating), and C6 (creating) with the indicators that are differentiating, attributing, checking, critiquing, planning and producing. This research is a quantitative descriptive study that aims to determine the ability of students to solve HOTS problems in the matter of straight-line equations. The research was conducted at SMPN 3 Surakarta, SMPN 16 Surakarta, and SMPN 20 Surakarta, each of which included high, medium, and low category schools with 77 students. Data obtained using HOTS questions on the topic of straight-line equations with the reliability of the item is 0.746 The conclusion obtained is that differentiating indicators are at a high level. Medium level indicators are attributing and producing. Indicators at low levels are checking, critiquing, and planning. In the differentiating indicator, from 77 students there are 36 students with differentiating abilities at a high level. Whereas in the other 5 HOTS indicators, the ability of students is mostly at medium and low levels.
Effectiveness of Macromedia Flash digital module
Authors: Supriharyanti D , Usodo B , Slamet I
Published: March 2020

In the 21st century, digital media is very important in life. With the development of technology, teachers must be able to develop multimedia-based learning systems. Modules are teaching materials that can be arranged in certain forms and can help learning activities. Modules can be made in various forms, one of them is a digital module. Macromedia Flash is an application for creating animations that are widely used by animators. The purpose of this study was to determine the effectiveness of the digital Macromedia Flash module in mathematics learning. This study uses descriptive statistical analysis. Based on the results of the author’s research, it can be concluded that the Macromedia Flash digital module is very effective on mathematics learning. Digital modules can increase student’s motivation on mathematics learning and increase the activity of students in the learning process.
Analyzing socio scientific issues through algorithm
Authors: Anisa A , Widodo A , Riandi R , Muslim M
Published: March 2020

This study aims to reveal whether the use of a learning model Dialogical Argumentation Instructional Model (DAIM) can improve the student’s ability to argue by using the concept of genetics in maintaining opinion using socio scientific issues. The research method uses mixed method, with the number of students studied as many as 36 students and 1 Biology teacher. The socio-scientific issue rose was about the use of mutant organisms and the acceleration of evolution with the help of biotechnology on transgenic corn. The results obtained that the ability to understand material rose between 1 - 14 points; there is an increase in the complexity of the structure of argumentation to level 6, and although it is low, the use of the concept of genetics as a basis for opposing and defending opinions can be seen.
The development of an instruments diagnostic two-tier multiple choice assisted smartphone on salt hydrolysis
Authors: Bachtiar R A , Nahadi N , Firman H
Published: March 2020

Research has been conducted instruments diagnostic two-tier multiple choice assisted smartphone on salt hydrolysis, or called Smartphone Tes Diagnostik Miskonsepsi Hidrolisis Garam (S-TDM-HG). In this study using descriptive methods that are part of research and development (R & D). The procedure of research is carried out through several stages of work, namely: (1) determination of subject matter; (2) study of core competencies, basic competencies, syllabus and material to determine concept labels, (3) concept map making, (4) identification of student misconceptions based on concept labels made in concept maps, (5) designing questions and answers (6) collection of existing multimedia, (7) making scripts and storyboards, (8) making S-TDM-HG. The development of the items adapted the stages developed by Treagust and McIntire. The concept map developed is used to identify what concepts will be developed in the process of making S-TDM-HG questions. Based on the essay test data given to 34 students in one of the high schools in Sumedang, the initial identification of misconceptions from students was generated to develop the S-TDM-HG problem in the first tier (tier 1) and second tier (tier 2). Based on the 16 response patterns obtained there are six possible answers to misconceptions, one possible answer understands the concept and nine possible answers that do not understand. 22 items developed, 20 questions are said to be valid with a CVI value of 0.9385. Based on 20 valid questions, which meet the content validation criteria as many as 18 items.
Promoting civic education through integrated ICT-based media in early childhood education
Authors: Andriani A
Published: March 2020

Empirical reality shows the occurrence of moral decadence, behavioural degradation, and ethical erosion that requires more serious handling. Citizenship Education is one of the personality subjects given from elementary school to university level to anticipate these conditions. Civic Education learning in elementary schools is very important because at this age the children’s personality is more easily formed and directed to be able to understand, interpret, the noble values that are taught and subsequently expected to be realized in the behaviour of noble attitudes in the daily lives of students. Research approach based on literature studies. How does this Civic Education emerge as learning, does the implementation process fit in the context of the elementary school, how the application of the noble values of students in the school environment, to Civic Education learning that takes place in accordance with expectations, becomes the parts to be studied, so that Civic Education is indeed very important to be given to students from elementary school to tertiary level in order to achieve the goal of education so that they are smart in developing their personalities for the provision of life in the future.
Building a digital intelligence on millennial generation through strengthening national identity
Authors: Candra A A , Suryadi K
Published: March 2020

The purpose of writing this article is to build digital intelligence in the millennial generation by realizing Indonesian identity, this study uses a qualitative approach with a critical discourse analysis method, and this study uses a literature review of the latest scientific books and leading international journal papers. This study produces three important dimensions in building digital intelligence, namely in the form of knowledge, understanding and awareness. This is based on the findings of the importance of planting about what things are obtained, informed and communicated, when all three of these data sources have been known and the truth, both of them as a whole both positively and negatively so that the generation of millennial realize thoroughly. The results of this study are expected to form a millennial generation that has digital intelligence marked by the strengthening of national identity in the disruptive era.
Hand motion tracking based on gesture understanding using leap gesture for virtual 3D batik gallery
Authors: Padmasari A C , Hariadi M , Christyowidiasmoro C
Published: March 2020

Virtual batik 3D gallery is designed as one of the efforts utilizations of digital-based on media for Industrial Revolution 4.0 where the flow of globalization is becoming sophisticated which emphasizes the digital economical pattern, artificial intelligence, big data, robotic. This research emphasizes on hand motion tracking based scientific knowledge on Gesture Understanding using Leap gesture for the 3-Dimensional Virtual Batik Gallery. Gesture-understanding based on Hand Motion Tracking which advocates Leap Gesture for a 3D Virtual Batik Gallery functions as an interactive virtual media replacing part of the functions Keyboard and Mouse process. This is aimed at varying the media packaging, especially for information providers in terms of how they can relay the information quickly to others, designing application, or documenting data. The method used in this research is Design and Development (D&D) and required three steps involving the process of modelling the initial design (3D modelling) using Normal Map technique, the process of making gesture scenario in the form of FSM in every room, and gesture design using hand motion tracking in Leap Motion controller. The result of the study was in the forms of responses to hand motion tracking in a 3D batik gallery, which was grouped into 3 hand-gesture-understanding concepts: Tap Gesture with motion response description for GPU (16 mm/s 60 FPS), (10 mm / s 100 FPS), (5 ms/200 FPS), CPU (33 ms 30FPS), and (16 ms / 60 FPS); for describing and detecting Flyhand Gesture on GPU (16 mm/s) (60 FPS10 mm / s) (100 FPS5 m/s 200 FPS) on CPU (33 ms/30FPS) (16 ms / 60 FPS); for Trusther in (GPU = 16 mm/s) (60 FPS33mm / s) (100 FPS 16 ms / 60 FPS) CPU (33 ms 30 FPS 10 ms) (60 FPS 33 ms 5 ms 200 FPS); and for Hold Hand Gesture on CPU (33 ms 30 FPS) (66 ms 60 FPS) and the response on GPU (33 ms 30 FPS) (66 ms 60 FPS).
Effect of electromagnetic wave interference against computer network quality of service
Authors: Hartawan I N B , Santika P P , Iswara I B A I , Desnanjaya I G M N
Published: March 2020

The need for power grids and computer networks is a critical thing to note. Placement of cables in the building will affect the quality of services provided, especially on computer networks. The computer network transmits digital data that is very susceptible to interference of electromagnetic waves. The electrical cable is one of the media that can produce electromagnetic waves. In this study measurement of electromagnetic waves on electrical wiring, for the quality of computer network services. The type of power cable tested is the power cable used in the NYYHY and NYM cables, while for the computer network cables tested are UTP and STP computer network cables with categories 5e (Cat 5e). The Quality of Service parameters tested in the study this is Throughput, Jitter, Delay, and Packet Loss. Tool used to measure electromagnetic wave radiation is the Electromagnetic Radiation Detector DT-1130. The results of this study indicate that the electromagnetic interference generated by the power cable affects the quality of service computer network. Decreasing network performance on UTP is greater than STP.
Design of heat exchanger to evaporate for R134a working fluid in organic Rankine cycle power plants system
Authors: Muslim M , Buwono A , Yunita Y
Published: March 2020

Design for a power plant from the organic Rankine cycle (ORC) system is a power generation technology from one of the applications of renewable energy in the field of electricity. In this study, we applied a design of an organic Rankine cycle system in the form of a heat exchanger device installed in an ORC system that functions to change the form of the working fluid that is R-134a into steam or liquid. Heat exchangers are designed to be shaped like a drum or vessel with dimensions of 60 centimeters in height and 50 centimeters in diameter. This heat exchanger is made of two pieces to support the main components of the ORC system, namely the evaporator and condenser components. This heat exchanger design can produce temperatures below 10 0C in the condenser to change the shape of the working fluid to become liquid and can also produce temperatures above 90 0C in the evaporator with the form of a working fluid in the form of steam or gas. From each heat exchanger is given insulation or wrapped so as not to cause heat propagation either out or air, the temperature of the incoming environment is coated with aluminium foil and foam with a thickness between 1-2 centimeters.
Electronic media and language development of early childhood
Authors: Veronica N , Gupita N
Published: March 2020

Early age is a period where children have not been able to develop the potential that exists in them. One such potential is language development as the result of cognitive development. Playing is one way to develop language. Because young children like to play at school, teachers should use the method of playing in learning. In playing, teachers can use electronic media because early childhood nowadays is the Alpha generation, the technology generation. The purpose in writing this article was to find out the relationship between electronic media and language development in early childhood. The method in writing this article was to review research journals related to electronic media and early childhood language development and it was supported by references from books related to the topic. The result was that the children learnt through play and interesting things such as using electronic media so that they could unfold their language development.