Indonesia Conference Directory

Corresponding Author
Dwi Atmanto

Institutions
Cosmetology Study Program
Faculty of Engineering
State University of Jakarta
Jalan Rawamangun Muka Jakarta Timur

Abstract
Rapid industrial development can lead to environmental pollution. bad air environment will cause damage to the skin such as dry skin. Indonesia has biological natural resources such as coconut trees and castor oil plants. Both oils can be used to make skin care due to the impact of heat by the environment. This study aims to determine the effectiveness of using VCO oil from coconut and castor oil in natural creams to treat dry skin. The method of this research is an experiment that is looking for the right comparison to make natural creams from each VCO oil and castor oil. The experiment was carried out on 10 dry skins of student volunteers. Research using randomized group only design is divided into two groups. Group A is the experimental unit for treatment and group B is a comparison group, subjects are selected by purposive sampling from a particular population. This study used an 8-experimental design of the initial test until the final test in both groups. The results showed that tcount > ttable is 2.441> 1.330 so Ho is rejected and HI is accepted at the 0.05 significance level. So, there are differences in the use of pure coconut oil cream (VCO) and castor oil cream to reduce the smoothness of the skin.

Keywords
Castor oil, VCO oil, Natural Cream, Dry skin, Environmental factors

Topic
Environmental Engineering

Link: https://ifory.id/abstract/9NgrfXQE73vp

Corresponding Author
solihin solihin

Institutions
Department of Out-of-School Education, Faculty of Education, Jakarta State University
Biology Education – Faculty of Mathematics and Natural Sciences – Jakarta Islamic State University* solihinone[at]yahoo.com
Indonesian education university. Dr. Styabudi 229 Bandung
Asmis business and multimedia institute

Abstract
This study investigated the contribution of a Cooperative Instructional Strategies in developing academic discussion. Academic discussion is an important element of historical thinking, which is considered to improve conceptual understanding and support the development of democratic citizenships by helping students interpret, understand and connect patterns of human activity across time in environment. Adult learner as research conditions, participated in this study. The outcome variables discussed in the paper are adult learner self-esteem and classroom climate. Over the period of the study, cooperative learning did not significantly improve the self-esteem of adult learner. However, adult learner in the experimental group who were taught through the cooperative learning approach perceived classwork to be less difficult than the control adult learner who worked individually. The control adult learner also reported a decline in satisfaction with classwork and perceived more friction in their class. Interviews with the instructor and adult learner showed favourable attitudes toward cooperative learning.

Keywords
Cooperative learning, classroom climate, environment, self-esteem, affective outcomes, adult learner perceptions

Topic
Biology

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

Corresponding Author
Irika Widiasanti

Institutions
(a) Faculty of Engineering, Universitas Persada Indonesia Y.A.I Jakarta
Jl. Pangeran Diponegoro No.74, Jakarta 10430, Indonesia
(b) Faculty of Engineering, Universitas Negeri Jakarta
Jalan Rawamangun Muka, Jakarta 13220, Indonesia
*irika[at]unj.ac.id

Abstract
Construction of buildings has a complex type of work. Detailed work does not only refer to the technical specifications and drawing plans that have been set, but there are also construction norms and work steps that need to be understood by the Supervising Consultant in achieving project objectives. There are often problems with quality and time control, so the ability to manage risk from the Supervising Consultant needs to be known and analyzed. Based on this analysis, it can be determined the level of risk maturity of the Supervising Consultant in overseeing the implementation of building construction. The purpose of this study is to obtain the maturity level of the Supervising Consultant in managing risks related to quality and time performances. This study uses descriptive analysis and Analytic Hierarchy Process (AHP) to get category in risk control. The results of the study indicate that the Enterprise Risk Maturity criteria assessor obtained maturity level 4. This means that the Supervising Consultant has a supervisory system on the implementation of risk management, the principles have been implemented and accompanied by periodic improvements in terms of control.

Keywords
Risk Management Maturity

Topic
Civil Engineering

Link: https://ifory.id/abstract/vGgzVe4ajKRC

Corresponding Author
solihin solihin

Institutions
Department of Out-of-School Education, Faculty of Education, Jakarta State University
Biology Education – Faculty of Mathematics and Natural Sciences – Jakarta Islamic State University* solihinone[at]yahoo.com
Indonesian education university. Dr. Styabudi 229 Bandung
Asmis business and multimedia institute

Abstract
Students critical thinking skills in environmental concepts can be improved by one of them by realizing learning through critical literacy training based on mass media. The research was conducted in two places, first at the Didactic LPM Secretariat, UNJ as a routine meeting place and the second at the NGO Unlimited Schools office on Jalan Kemandoran. The purpose of this study was to obtain empirical information regarding the improvement of critical learning skills of members of critical pedagogy groups. The methodology used in this study is Practical Action Research or action research by organizing a learning action in a training model. The results of the research obtained showed an increase in critical learning skills of members of critical pedagogy groups after being given treatment that had been tested by hypothesis with the t-test. The average increase in their critical learning abilities reaches 43%. The conclusion that can be drawn is that this study tends to be able to be a solution to the problems of critical learning that are used functionally in other objects.

Keywords
Critical Learning Environment, Students, Training Model

Topic
Biology

Link: https://ifory.id/abstract/fuW7JAPwxzXd

Corresponding Author
Muhamad Saepudin Wahab

Institutions
Metallurgy and Material, Indonesia University

Abstract
Dye plays a very important role in the Dye Sensitized Solar Cell (DSSC) application because the sunlight that comes in is captured and absorbed by dye. More light absorbed, the higher value of efficiency obtained. Therefore, dye plays a very vital role to increasing this efficiency value. For increasing the absorption of dye, this topic studied about effect of reduced graphene oxide (rGO) to DSSC Performance. its obtained through the hummers modified method which will be combined with dye in the ratio of wt% rGO-dye 0,1: 1; 0,3: 1; and 0,5: 1 respectively. Thickness Variation of rGO on the ITO transparent glass to enhance efficiency of DSSC also studied. The result show power conversion efficiency of the DSSC with the rGO-dye 0,1:1 (0,008%), rGO-dye 0,3:1 (0,019%), and rGO-dye 0,5:1 (0,0073%), which was higher than that of the DSSC without the rGO (0,0046%). ZnO nanorod as photoanode obtained by chemical bath deposition which is growth in temperatur 0 degree Celcius and Platina (Pt) as the counter electrode. SEM, UV-Vis and XRD were used to characterization of rGO and ZnO.

Keywords
DSSC,reduced graphene oxide, ZnO

Topic
Material Science

Link: https://ifory.id/abstract/NrLBXmynM2CD

Corresponding Author
Busro Busro

Institutions
1,2,3,4 UIN Sunan Gunung Djati Bandung
5 STMIK Primakara

Abstract
Speech recognition is a process of recognizing letters, words or sentences that are spoken. Voice recognition is better known as Automatic Speech Recognition (ASR). Automatic Speech Recognition (ASR) has been widely applied in everyday life, for example is the operation of a smartphone that is run through automatic commands (voice recognition). The letter of origin is the place where the letter is released when the letter is pronounced. The letter of origin is the basis for reading the verses of the Koran. Errors in the pronunciation of letters or in makhraj letters, can cause differences in meaning or meaning errors in the verse being read. Generally the method of learning to read the Koran is used accompanied by accompanying teachers who are proficient in their fields. In this final project, a sound matching application was built on the pronunciation of Ayat Al-Quran as a learning medium for children using the Fast Fourier Transform (FFT) Algorithm and Divide Conquer (DC) that support learning independently. The system built in the final project is to utilize the Google API feature on android as voice matching. Furthermore, the incoming sound will convert into text form using the Google API. The conversion method used is Fast Fourier Transform (FFT). The valuation method, Divide Conquer is used by calculating the sound proximity value of the Google API conversion results by matching Arabic text in the database. Based on the testing that has been done on the system testing. The results of the test found 61.1% accuracy for the appropriate reading and 38.9% for inappropriate reading.

Keywords
Sound Matching, Google API, Divide Conquer

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/WpQRPdhA3HcZ

Corresponding Author
Tety Sudiarti

Institutions
UIN Sunan Gunung Djati Bandung

Abstract
The study of Polyethylene Oxide (PEO) activity as a corrosion inhibitor in 1% NaCl electrolyte solution was carried out by the Wheel Test method with variations in concentration and temperature. The results showed that polyethylene oxide (PEO) had the optimum inhibitory activity at a concentration of 16 ppm, with inhibition efficiency of 80.15% at 25˚C. Polyethylene Oxide has adsorption properties which are in accordance with the Langmuir adsorption isotherm with free adsorption energy of 21.385 kJ / mol. The results of electron microscopy (SEM) analysis showed that polyethylene oxide could inhibit corrosion rates with iron surfaces that had fewer pores than without inhibitors.

Keywords
corrosion inhibitor; Polyethylene Oxide; Wheel Test; SEM

Topic
Chemistry

Link: https://ifory.id/abstract/gGpTd2Vkf3Cu

Corresponding Author
erna bagiari

Institutions
Departemen of Cardiology, Sanjiwani Hospital and Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
Abstract. Wolff-Parkinson-White (WPW) syndrome is one of the most common pre-excitation syndrome. Accessory pathway formed between the atria and ventricles become conduction path other than the atrioventricular node. The occurrence of atrial fibrillation (AF) in the WPW syndrome cases are quite rare, and seldom reported in the medical literature. WPW syndrome that have a tachyarrhythmia has a specific treatment and contraindications, thus giving preferred treatment should avoid the potential occurrence of ventricular fibrillation (VF). We describe adult male presenting with a very rapid, irregular wide QRS complex tachycardia, with hemodynamic instability. Successful cardioversion performed in the emergency room (ER). ECG results after cardioversion showed normal sinus rhythm with accompanying evidence of accessory pathway in accordance with WPW type A with the localization of the LV free wall. Medical personnel need special attention in emergency cases. AF with aberrant conduction and ventricular tachycardia are the very first thing to be considered in cases of wide QRS complex tachycardia. However, medical personnel need to consider that WPW syndrome accompanied with AF will give an increased heart rate (> 200 x / min), wide QRS complex and irregular rhythm, especially when choosing a pharmacological therapy. Several hypotheses which can cause AF in patients with WPW including spontaneous degeneration atrioventicular reciprocating tachycardia (AVRT), electrical properties accessory pathway, accessory pathway effects on atrial structure and vulnerability of intrinsic atrial muscle. The location of accessory pathway and also the possibility of a hidden track of accessory pathway that sometimes gives an overview of less obvious delta waves, but does not rule out the WPW syndrome in this case. AF has a significant prognostic in WPW syndrome. This condition can be life-threatening if there is very rapid ventricular response. The use of drugs that slow AV conduction block is not recommended.

Keywords
management; atrial fibrillation; WPW syndro

Topic
Biology

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

Corresponding Author
Erdawaty Kamaruddin

Institutions
(a) Vocational Education Program, Informatics Education Studies Program, State University of Jakarta, Jakarta, Indonesia
*erda_kamaruddin[at]yahoo.com
(b) Graduate Program, Education Research and Evaluation Program, State University of Jakarta, Jakarta, Indonesia

Abstract
Scoring is a process of converting test answers into numbers which are quantitative values of an answer to an item in an instrument. The numbers of the scoring results will then be converted into values through a certain processing process. The scoring model is a way of scoring a test. The scoring models can result in inappropriate score, where students cannot answer the easy items correctly but successfully answer difficult items. The research data were analyzed using the Donlon and Fisher method through biserial correlation. The study used the experimental method. The study population was high school students in DKI Jakarta, samples of seven hundred students were taken using proportional random sampling techniques. Data collection is done through Mathematics tests in the form of multiple choices using the correct score and punishment score scoring model. The results of data analysis showed the value of thit = 13.0750 and ttab = 1.645. Because of thit > ttab, it was decided to reject the null hypothesis. Thus it can be concluded that in the five option multiple choice objective test, the punishment score scoring model produces a more reasonable score than the correct score scoring model.

Keywords
scoring model, correct score, punishment score, math test

Topic
Mathematics

Link: https://ifory.id/abstract/ZK923Bv4LQ6V

Corresponding Author
erna bagiari

Institutions
Department of Cardiology, Sanjiwani Hospital/ Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
Abstract The association between lack of thyroid hormones and cardiac dysfunction has been well described. We experienced a case of a 44-year-old woman with dilated cardiomyopathy (DCM) accompanied with long QT secondary to hypothyroidism and hypocalcaemia. Thyroid hormone acts on the myocardium of the heart and peripheral blood vessels. The genomic and non-genomic effects of thyroid hormone are associated with cardiovascular and chemodynamic function. A well documented but mostly overlooked sign in hypothyroidism is the prolongation of the QT interval. Long-QT syndrome, which is characterized by abnormal QT-interval prolongation on the surface ECG and an increased risk of sudden death, usually due to ventricular fibrillation. The mechanism of hypothyroidism on QT prolongation and the occurrence of ventricular tachycardia is unknown and the effect may be idiosyncratic, although coexistent.

Keywords
Delated cardyomyopathy; Long QT syndrome; Total Thyroidectomy

Topic
Biology

Link: https://ifory.id/abstract/UDrtz4yMVT37

Corresponding Author
IMAM BASORI

Institutions
Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta 13220, Indonesia
*unimam_r_one[at]yahoo.com

Abstract
Steel has a very important role in the industrial application, especially for the manufacture of automotive components such as gears. In its application, gear undergoes the compressive and friction loads, so that in the manufacturing process, materials with high hardness and wear resistance are needed. One method to increase steel hardness is by quenching process. In this research, quenching process will be carried out on AISI 1045 steel using the salt water as the cooling media. The austenization process was conducted at a temperature of 850 ° C with the holding time of 15 and 30 minutes. The samples were then salt quenched with the salt concentration of 0, 10 and 23%. The results showed that the salt quenching process on AISI 1045 steel tended to change the combination of ferrite and pearlite phases to be martensite. This process also increases the hardness of AISI 1045 steel, in which the highest hardness value is found in the sample with 30 minutes austenization process and salt concentration of 23%. In contrast, this sample have also the lowest impact resistance value of 0.056 J / mm2.

Keywords
salt quenching; austenization; ferrit; pearlite; martensite

Topic
Material Engineering

Link: https://ifory.id/abstract/zBKR6ZbyfQDV

Corresponding Author
Hazmi Fauzi

Institutions
a) Program Studi Pendidikan Kimia, Jurusan Pendidikan MIPA, Fakultas Tarbiyah dan Keguruan, Universitas Islam Negeri Sunan Gunung Djati Bandung, Jl. A. H. Nasution No. 105, Bandung, 40614, Indonesia
*hazmy.fauzy[at]gmail.com

Abstract
Learning on the concept of chemical bonds should be supported by all three levels of representation as a whole, including macroscopic, sub-microscopic, and symbolic. However, teaching materials that are widely used are still centered on symbolic aspects only. Based on these problems, technology-based teaching materials are needed to overcome this problem. This study aims to produce teaching materials in the form of electronic modules. This research used method of Design Based Research (DBR) which consists of the stages of analysis, design and development to be able to produce products in the form of electronic modules that have the characteristics of material presentation in inquiry by connecting three levels of chemical representation which displayed in the form of text, images, animations, flash and video. In general, the results of the average value of the validation test in the form of r count are between 0.77-0.81. Furthermore, the product was tested to 15 student respondents using a feasibility test instrument. The results of the feasibility test show that the percentage of feasibility in each aspect is in the range of 90-98% which agrees to all criteria. This shows an electronic module that has been made feasible to use.

Keywords
e-module; inquiry; chemical bond; chemical representation

Topic
Chemistry

Link: https://ifory.id/abstract/mQwJtakgK2Cn

Corresponding Author
Kinkin Y Subarsa Putri

Institutions
(1) Department of Business Administration, University of Indonesia, Depok, Indonesia
(2) Department of Economic, State University of Jakarta, Jakarta, Indonesia
(3) Departemet of Comunication, State University of Jakarta, Jakarta, Indonesia

Abstract
Abstract. New media helps all aspects of society well. The formulation of the problem of this research is how the influence of electronic word of mouth, brand trust, brand loyalty towards the new media literacy of the community. The concept is new media in electronic word of mouth, brand trust, brand loyalty and new media literacy. Method used quantitative with multivariate analysis. Research respondents are Youtube users on a product. Validity and reliability of the research is good, it can proceed to the next stage. Reflections are from the descriptive results of all the variables that have a positive dominant value. Multivariate in this study went positive. Alternative hypothesis of all independent variables on new media literacy has a positive effect. This means that this research is consistent with previous research toward positive influences. There is the influence of electronic word of mouth, brand trust, brand loyalty towards the publics new media literacy in using Youtube. Conclusion is positive. Suggestion is to use new media in subsequent research and reflect on the concept of research in technological development to make new contributions in the development of technology and the social side of society.

Keywords
electronic word of mouth, media literacy, new media.

Topic
Computer and Communication Engineering

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

Corresponding Author
Nitih Indra Komala Dewi

Institutions
Fakultas Pendidikan Teknologi dan Kejuruan (FPTK), Universitas Pendidikan Indonesia.

Abstract
Rattan handicrafts are the Featured product of Cirebon City. In the heyday, Cirebon rattan industry has dominated 90% of the world rattan market, the value of rattan exports reached hundreds of millions of USD (www.disparbud.jabarprov.go.id, 2012). In 1998, there was an economic crisis, the rattan industry began to collapse. The government policy regarding the export of rattan raw materials caused a surge in rattan raw material prices. On the other hand, the potential of Human Resources and government support is not optimal. This paper aims to review the potential of Kampung Wisata Rotan Galmantro as a tourist village developed in accordance with regional characteristics. The methods used are comparative studies and literature studies about tourist villages. The results obtained in the form of physical mapping area (landscape) of Tourist Village, a grouping of rattan craftsmen, and digital marketing strategy.

Keywords
Tourist Village, Rattan, Craftsmen, Digital Marketing

Topic
Architecture

Link: https://ifory.id/abstract/Qcfnda9RG2NC

Corresponding Author
Arita Marini

Institutions
(a), (b), (c), (d), (e) Universitas Negeri Jakarta
Jalan Rawamangun Muka No: 1 Jakarta Timur, DKI Jakarta.

Abstract
This study aims at presenting school management model based on character building in teaching learning process. This survey research was conducted at 450 elementary schools in Jakarta in Indonesia. Structural Equation Modeling (SEM) was used in analyzing data. Study result found that model hypothesized was a good fit for the data shown by RMR reaching 0.039, GFI reaching 0.919, and AGFI reaching 0.848. Other findings confirmed that teaching learning process preparation, teaching learning process, and teaching learning process closing are positively correlated with character building in teaching learning process. The three dimensions consisting of praying, connecting teaching material with good attitude development, and supervising the student uniform cleanliness have positive correlation with preparation of teaching learning process. Teaching learning process can be predicted by teaching cooperation in teamwork, encouraging student to ask questions, and paying attention to student attitude. The three dimensions determining closing of teaching learning process are praying, greeting, and reflecting by integrating with character values. It can be concluded that the model of school management focusing on character building in teaching learning process proposed can be used by elementary schools in Jakarta to improve student character building.

Keywords
School management; Character building; Teaching learning process;

Topic
Management Science

Link: https://ifory.id/abstract/H2PgZMrBfTc8

Corresponding Author
Robbi Rahim

Institutions
1. School of Computer and Communication Engineering, Universiti Malaysia Perlis, Arau, Malaysia
2. Universitas Muhammadiyah Sidoarjo, Sidoarjo, Indonesia
3. Indonesia Defense University, Indonesia

Abstract
Cryptography in various communications both online and offline is very necessary and generally cryptography is used to secure data in the form of text while non-text data requires special algorithms. Base64 is an encoding algorithm that can convert non-text data into binary data so that the data can be secured with cryptographic algorithms such as the GOST algorithm. The combination of the BASE64 and GOST algorithms is expected to be able to secure all types of data that exist and have the ease of returning to their original form without damaging the original data, besides this combination will increase data security because the combination of these two algorithms produces ciphertext that is difficult to know if the process is done cryptanalyst by third parties. The results of the combination of Base64 and GOST algorithms are expected to be able to deliver dynamic security contributions to various existing data objects so that they can be used both online and offline.

Keywords
Base64, Cryptography, Ciphertext, Encoding, GOST

Topic
Computer Science

Link: https://ifory.id/abstract/2vgRXc9BQqPE

Corresponding Author
Maulina Larasati Putri

Institutions
1) Department of Communication, Universitas Negeri Jakarta, Jakarta, Indonesia
2) Department of Communication, Universitas Negeri Jakarta, Jakarta, Indonesia
3) Department of Communication, Universitas Negeri Jakarta, Jakarta, Indonesia

Abstract
Abstract. New media that are decisive in peoples lives. Research to find out the influence of new media, brand image on consumer confidence in online products. The content of new media is the content of media messages in new media in various products. Brand image is a brand on the product or image that product and image has. Consumer loyalty is a research previously conducted by previous research by Robinson, Xian Xing and Fredick. This study uses the positivistic paradigm. Respondents of this study were Medan, Cimahi, Sidoarjo and Makassar, Instagrams new media users. Descriptive of each variable of this research is positive content media in the contents of this research. Brand images on Instagram are not very important to current trends. Brand trust in this descriptive study is positive for each indicator of this research. Consumer loyalty is the respondent of this study a positive average on each indicator of this study. The results of the study were the strong influence of media, brand image, brand trust on consumer loyalty on Instagram. The results of this descriptive study lead to positive results on each indicator. Related to the predictive regression was a positive impact on Instagram respondents consumer loyalty.

Keywords
brand image, brand trust, content media, and consumer loyalty

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/Kyx7pwPWVQf6

Corresponding Author
Mokhamad Khamdan Khabibi

Institutions
(1) Informatics Engineering, Politeknik Negeri Malang, Jalan Soekarno-Hatta 9, Malang 65141, Indonesia
(2) Electrical Engineering, Politeknik Negeri Malang, Jalan Soekarno-Hatta 9, Malang 65141, Indonesia

Abstract
Corn plants has an important role in compliance national and international food needs after rice and wheat. According to Ir. Pending Dadih Permana, Director General of Food Infrastructure and Facilities (PSP) of the Ministry of Agriculture, East Java is one of province that the biggest corn producers in Indonesia. But it still can not supply the increasing market needs in Indonesia. Therefor, it requeres a grouping corn plants based on produktivity, production, and area of land in East Java in order to increase level of procurement of corn plants in East Java. In process of grouping, it use K-Medoids algorithm. K-Medoids algorithm as known as Partitioning Around Medoids (PAM), which is varians of K-Means method. This is based on the use of medoids, not from observation of mean that owned by each cluster, with purpose reduce the sensitivity of partitions due to the extreme values in the dataset. This algorithm is an algorithm that can produce data that is not sensitive to outliers because one of object with some big value. These deviations can occur from data distribution. Based on the result of grouping corn plants based on productivity, production, and area of land which has been done, there are 3 clusters with at most 21 members, and at least 8 members. From this research, it can concluded that K-Medoids algorithm can help determine potential of the location of corn producing plants in East Java.

Keywords
Corn; Clustering; K-Medoids; Productivity; Production; Area

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/NUrkwBDe8Mc4

Corresponding Author
Wiwik Dwi Pratiwi

Institutions
, Hamzah Fansuri**, Triwulan

Abstract
Student

Keywords
, Januarti Jaya Ekaputri

Topic

Link: https://ifory.id/abstract/8VTfU6YApMwD

Corresponding Author
Cindy Pamela Cornelia Munaiseche

Institutions
(a, b) Department of Informatics, Faculty of Engineering, Universitas Negeri Manado, Sulawesi Utara, Indonesia
*cindymunaiseche[at]unima.ac.id
(c) Department of Public Health, Faculty of Sport Science, Universitas Negeri Manado, Sulawesi Utara, Indonesia

Abstract
The purpose of this study to design a knowledge based system that called expert system application for diagnosing heart diseases by using forward chaining method as one of inference technique and analyze the software functionality through black box testing. The heart organ chosen because many mortality rates are caused by sudden heart attacks. The expert system application design consists of seven stages: preliminary studies, data collection, data analysis, system design, system implementation, and the last, drawing conclusions. Expert system software application built to recognize the type of heart disease after consultation by answering a few questions about the symptoms of disease that displayed by the system, and can infer the type of heart diseases suffered by the patient. In addition, an application created to provide solutions or actions that can be performed by patients in relation to heart disease he suffered. Based on the results of black box testing, the expert system application has been running with good functionality.

Keywords
Expert System, Forward Chaining, Heart Disease, Inference, Black Box Testing

Topic
Information Engineering

Link: https://ifory.id/abstract/MuCaxVQK4pZU

Corresponding Author
anik yuliani

Institutions
IKIP Siliwangi

Abstract
Individuals who have critical thinking ability tend to be more careful in drawing conclusions, this is because these individuals have used the process of analyzing, explaining, developing, and choosing ideas. This study aims to analyze students critical thinking ability and self-confidence in circle material. This study analyzed qualitatively with descriptive analysis method. The instruments used in this study were tests of critical thinking skills, interview guidelines and self-confidence scale. The sample of this study was class VIII students in one of the junior high schools in the city of Cimahi as many as 30 students. Based on the results of data analysis, it can be concluded that students critical thinking skills are still quite low, where some students still have difficulty in carrying out the preparation steps by choosing and determining the strategies needed to solve the problem. However, they have pretty good self-confidence.

Keywords
Critical Thinking, Self Confidence

Topic
Mathematics

Link: https://ifory.id/abstract/FzdHRMPj4qp3

Corresponding Author
Anak Agung Ayu Lila Paramasatiari

Institutions
Faculty of Medicine, Warmadewa University

Abstract
Introduction: Changes in food consumption patterns in children is that they are currently consuming instant foods and having poor nutritional value. This causes the prevalence of obesity in children to increase every year. It continues into adulthood so it is important to carry out interventions to prevent overweight and obesity in children. Objective: This study aims to determine the relationship between consumption of junk food and childhood obesity. Method: This study was a cross sectional study in children aged 9-12 years in West Denpasar District with 175 respondents selected by simple two-stage cluster random sampling. Respondents were children aged 9-12 years who attended elementary schools in West Denpasar District without a history of obesity in their parents. The obesity criterion in this study is if the Body Mass Index (BMI) according to age is more than Z score 2. Criteria for consumption of junk food is if at least once a week consume low-nutrition foods that contain fat and soft drinks. The collected data was analyzed with SPSS 21 for window including Chi-Square test to look for the relationship of consumption of junk food with obesity and multiple logistic regression analysis to control the influence of variables on parental education, parental income and physical activity of children. Result: Obesity prevalence was 18.3%. The prevalence of obesity in the group that consumes junk food is 12%, while in the group that does not consume junk food is 6.3%. There was a significant relationship between consumption of junk food and the prevalence of obesity (x2 = 4,65; p=0,031) with Odds Ratio 2.56 and 95% Trust Interval 1.15-5.72. After being controlled by the parents education variables and childrens physical activity, this relationship was still significant (p = 0.015) but the adjusted Odds Ratio was only 0.32. Conclusion: there is a moderate positive relationship between consumption of junk food and obesity in children.

Keywords
junk food, risk factors,and obesity

Topic
Biology

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

Corresponding Author
Azizah Zahra Jenar Suwarni

Institutions
Universitas Pendidikan Indonesia

Abstract
The aims of this study was to improve writing and storytelling skills of second grade elementary school students. Through digital literacy, students can have a meaningful experience when they learn to make and tell a story they have made. Students will be able to explore their competences while using a lot of audiovisual media for finishing writing and storytelling assignment. This research conducted with a qualitative research design by using observation and students- assessment as research instruments. Based on the findings, a conclusion can be drawn that digital literacy is able to improving second grade students- writing and storytelling skills

Keywords
digital literacy, elementary student, writing skills, storytelling skills

Topic
Computer Science

Link: https://ifory.id/abstract/AmZ7Lhd9aFJj

Corresponding Author
Ekasatya Aldila Afriansyah

Institutions
(a) Department of Mathematics Education, Institut Pendidikan Indonesia
Jalan Pahlawan Nomor 32, Sukagalih, Tarogong, Garut, West Java, Indonesia
*ekasatyafriansyah[at]institutpendidikan.ac.id

Abstract
The teacher is one of the important factors in a good teaching and learning process. A teacher is required to have qualified cognitive and pedagogical skills, so that he/she has to be creative in everything, including problem posing. Many studies discussed the problem of students skills but not many discussed the problem of teachers skills itself. This study used ATLAS.ti software as a tool for data analaysis. ATLAS.ti software assisted researchers to manage all various data. Research was conducted on prospective teachers in one private institution. Observation and tests were conducted on 40 respondents, while only 6 respondents were involved at the time of the phases, namely interviews. Through ATLAS.ti software, the result showed that problem posing skill of prospective teachers was still far from enough. What is needed is the right action to overcome the problems.

Keywords
Problem posing skill; prospective teacher; ATLAS.ti software

Topic
Mathematics

Link: https://ifory.id/abstract/RKuFjaXA2Te8

Corresponding Author
Widyanti Rahayu

Institutions
Universitas Negeri Jakarta

Abstract
Diabetes is a chronic disease caused by unhealthy habits and lifestyle. Diabetes is characterized by increasing blood sugar levels in the body. Someone who has a blood sugar level slightly above normal can-t be said as a person with diabetes, such conditions are called prediabetes. Classifying diabetes case accurately is an important thing because the occurence of complications and also can be obtained significant variables that affect changes in a persons blood sugar levels. One of the statistics methods which can analyze classification of disbetes case is using linear discriminant analysis. However, when no assumptions can be made about the distribution within each group, or when the distribution is assumed not to be multivariate normal, canonical discriminant analysis can be used to classification of diabetes. In this study we will compare the classification of diabetics using linear discriminant analysis and canonical discriminant analysis. From the results, it was found that the classification accuracy with canonical discriminant analysis was higher than linear discriminant analysis

Keywords
discriminant analysis, diabetes, classification accuracy

Topic
Mathematics

Link: https://ifory.id/abstract/3JeXNrpdRG9Y

Corresponding Author
Andi Candra Septaprasetya

Institutions
a) Students of Civil Engineering Department, Faculty of Civil, Enviromental & Geo Engineering, Institut Teknologi Sepuluh Nopember (ITS), Sukolilo,
Surabaya 60111, Indonesia
*bearelits42[at]gmail.com
b) Civil Engineering Department, Faculty of Civil, Enviromental & Geo Engineering, Institut Teknologi Sepuluh Nopember (ITS), Sukolilo,
Surabaya 60111, Indonesia
c) Statistics Department, Faculty of Matematics, Computation, and Data Science, Institut Teknologi Sepuluh Nopember (ITS), Sukolilo,
Surabaya 60111, Indonesia

Abstract
Most of Surabaya area is lowland, which is 80.72% with an altitude between 3-8 meter above sea level with a slope of less than 3%. Therefore, the city drainage system requires pump station operations to drain rainwater. One of the factors that can hinder the performance of pump stations in flood management is the damage to the drainage pump unit. This study has succeeded in finding motor damage as the type of dominant damage at drainage pump in Surabaya. The analysis of the types of dominant damage using the Analytical Hierarchy Process (AHP) by determining the type of dominant damage as the objective in the first level hierarchy, the dominant damage criteria are at the second level, and the types of damage are at the third level as an alternative decision. The types of damage are obtained by processing historical data of pump damage in 2017 to 2018, while the criteria for determining the dominant type of damage and the assessment in the AHP analysis are obtained from interviews and questionnaire with experts from the Surabaya city government and pump companies. The results of this study can be used to find the dominant causes of damage and forms of mitigation.

Keywords
Drainage, Pump Station, Dominant Damage Type, Multi Criteria Decision, AHP

Topic
Civil Engineering

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

Corresponding Author
Yatti Sugiarti

Institutions
Program Studi Pendidikan Teknologi Agroindustri,
Fakultas Pendidikan Teknologi Agroindustri, Universitas Pendidikan Indonesia

Abstract
One of Indonesian tropical plant collection diversity is eggfruit (Poeteriacampechiana) that known as sawo mentega in Indonesia. Eggfruit has high nutritional value and good function for health but their consumption still low and the fruit is unfamiliar for the most of Indonesian citizen. This research to develop food diversity by toast bread making to increase the utilization of eggfruit and promote the fruit to boarder citizen. This research aims to produce eggfruit toast bread products as a food diversification and find out the panelists acceptance of the eggfruit toast bread produced. Eggfruit toast bread compotition formulation will be the first step in this research. The best eggfruit toast bread formulation will be resulted based on the best phisical test, chemical test, and organoleptical test. The toast bread produced in this research is based on a formulation from the modified Bogasari Baking Center (2004). Eggfruit toast bread can be made from eggfruit puree and flour with different formulations. Formulation of wheat flour and eggfruit puree that can be made at 90 : 10; 80 : 20; 70 : 30; and 60 : 40, while for wheat flour and eggfruit flour formulations of 95 : 5; 90 : 10; 85 : 15; and 80 : 20. In general, panelists acceptance of eggfruit toast bread produced has the criteria of dislike-like for overall appearance, crust color, crumb color, uniformity of pores, tenderness, weakness, and aroma, while for taste is ordinary-like. The eggfruit toast bread produced has the characteristics of yellow, uniform pores, soft texture, aroma of bread, and a little of eggfruit taste.

Keywords
food diversification, puree, toast bread, eggfruit, flour

Topic
Industry Engineering

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

Corresponding Author
agus santosa

Institutions
Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
Coronary heart disease is a condition with inadequate blood supply to the cardiac muscle caused by coronary arteries obstruction. CHD as one of the cardiovascular disease was the highest cause of death in Indonesia from 1995 to 2007. Based on Indonesia National Research in 2014, Bali was placed on the seventeenth position with 12.272 CHD patients. Risk of CHD can be reduced by prevention and control of the risk factors. The purpose of this study was to find out the risk factors of CHD patients hospitalized in Sanjiwani Gianyar Hospital. This descriptive study used cross sectional design. Data collection were carried out based on the medical records of CHD patients hospitalized in Sanjiwani Gianyar Hospital from January to December 2016, which were selected by simple random sampling technique. The study research showed the majority (91,3%) of CHD patients were aged ≥ 45, male (58%), and had no family history with cardiovascular disease (78,3%). Most CHD patients had no smoking habit (68,1%), had normal BMI (68,1%), had no diabetes mellitus history (65,2%), and had hypertension history (55,1%). Most (84,1%) of CHD patients had normal value of total cholesterol level, normal value of trigliserida level (62,3%), sub optimal LDL level (52,2%), and low HDL level (34,8%). This concluded that most risk factors for CHD patients were aged ≥ 45, male, had hypertension history, and low HDL level as risk factors.

Keywords
Coronary heart disease

Topic
Biology

Link: https://ifory.id/abstract/qxEe7RyfVHnU

Corresponding Author
Muhammad Amin

Institutions
a) Department of Mechanical Engineering, Universitas Samudra, Kota Langsa, 24416, Indonesia
b) Department of Mechanical Engineering, University of Syiah Kuala, Banda Aceh, 23111, Indonesia

Abstract
Thermal energy storage using Phase Change Materials (PCM) is now widely applied to wall builds. Generally, PCM used for applications on walls building has a melting point of 0-65 oC. Beef tallow and coconut oil is a type of organic PCM known as Bio PCM needs to characterize by using the T-History Method. The T-History method is more accurate than DSC. This study aimed to determine the thermal properties of beef tallow/coconut oil PCM using the T-History method. The beef tallow and coconut oil as bio PCM material used in this study with the variation is respectively: 100%, 70+30%, 60+40%, and 50+50%. Tests are carried out using the T-History method. From the results of testing and analysis obtained supercooling temperature, melting temperature, specific heat, and latent heat for bio PCM beef tallow/coconut oil. The effect of adding coconut oil mixture to beef tallow caused a decrease in melting temperature and supercooling temperature, while the specific heat and latent heat of bio PCM of beef tallow/coconut oil ranged from 2.96-2.19 kJ/kg.oC and 101.05-72.32 kJ/kg. The result obtained that this bio PCM material of cow beef tallow/coconut oil can apply, as additional material in wall building applications.

Keywords
Thermal properties, Beef tallow/coconut oil, T-History method, Phase change material (PCM)

Topic
Mechanical Engineering

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

Corresponding Author
agus santosa

Institutions
Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
Jumantik are special officials who perform larva monitoring to reduce the occurrence of DHF. In fact, the high number of DHF cases in Puskesmas II South Denpasar represents a problem regarding the performance of Jumantik. The purpose of this studies were to find out the factors that influent the performance of Jumantik in relation with the occurrence of DHF in the work area of Puskesmas II South Denpasar. This study used descriptive analytic design through cross sectional approach with the total samples of 32 Jumantik in the work area of Puskesmas II South Denpasar. Data were collected by using questionnaires. The obtained data were analyzed by chi square test and logistic regression test. Based on bivariate analysis, there were no significant correlations between characteristic (age, gender, education, tenure, and additional work) and Jumantiks attitudes with the occurrence of DHF indicated by p> 0,05. However, there were significant correlations between Jumantiks ability (p = 0,02), Jumantiks motivation (p = 0,014), award given (p = 0,008) and monitoring evaluation (p = 0,001) with dengue occurrence (p <0, 05). The results of multivariate analysis showed that the variables which influenced the occurrence of DF were ability (p = 0,014) and monitoring and evaluation (p = 0,011) and the most influential were the monitoring and evaluation variables with the value of OR 20,40 which means that if there were no monitoring and evaluation to Jumantik then the risk of DHF occurrence were 20.4 times greater than that in the presence of monitoring and evaluation. The results of this studies showed that the most influential factors of DHF occurrence are the ability of Jumantik and monitoring the evaluation of Jumantik. To reduce the case of dengue, need to be optimized ability jumantik and monitoring evaluation consistently and continuously.

Keywords
Jumantik performance; dengue infection; prevention

Topic
Biology

Link: https://ifory.id/abstract/DqZtE4nBUxPy