Indonesia Conference Directory

Corresponding Author
Aldy Rialdy Atmadja

Institutions
Department of Informatics, Sekolah Tinggi Teknologi Garut, Indonesia

Abstract
Information technology has a lot of influence on world society. The use of Android-based mobile makes it easier for people to play games in anywhere. There are many types of games genre. One of the genre is arcade games. Arcade games are a type of game that is quite attractive to users and game developers. So that the development of this arcade game is considered suitable with the needs of the wider community. The development of this genre is for entertain users and have simple obstacles or rules that are quite difficult to complete, and practice people more concentration and creativity. In this study, Multimedia Development Life Cycle which developed by Luther are used to solve the development process of arcade game method. It consists of Concept stages, Design, Collecting Content Material, Assembly, Testing, and Distribution. The implementation are done with Construct 2 platform which is a powerful and intuitive games editor. The development of this game is expected to be a prototype arcade games that can be used to entertain users and build their creativity from playing games.

Keywords
Android, Arcade Games, Multimedia Development Life Cycle, Prototype

Topic
Computer Science

Link: https://ifory.id/abstract/TJKdRL9jeWPb

Corresponding Author
Elis Ratna Wulan

Institutions
UIN Sunan Gunung Djati Bandung

Abstract
In an industry of a company must experience transportation problems. This transportation problem is required to schedule a delivery of goods with the objective to minimize transportation costs. The objective of the transportation model is to plan the delivery of something from the source of the destination in such way as to minimize the total transportation cost. There are several cost constraints that occur in this transportation one of which is a budget constraint in which there are constraints of production costs and non-production.In transportation it is said to be unbalanced if the total number between source and destination is not the same. In this thesis there are methods to solve the problem of transportation is not balanced with the constraints of production costs and non-production is by using the Interval-Point method. In this skripsi there are methods to solve unbalanced transportation with the constraints of production cost and non-production use an interval-point method. This method is used to find the optimal solution.

Keywords
unbalanced transportation, production cost, non production, Interval Point Method, optimal solution

Topic
Mathematics

Link: https://ifory.id/abstract/GP96q8TFmXVz

Corresponding Author
Sri Agung Aryastuti

Institutions
a)Faculty of Medicine and Health Science, Warmadewa University, Jl. Terompong No. 24 Denpasar, Bali-Indonesia
sriagungary[at]gmail.com

b)Sanjiwani Hospital, Jl. Ciung Wanara No. 2 Gianyar, Bali-Indonesia
c)Wangaya Hospital, Jl. Kartini No. 133 Denpasar, Bali-Indonesia

Abstract
Anemia is a common condition found among Human Immunodeficiency Virus (HIV)-infected patients. T-cells that are infected with HIV virus can directly suppress the growth of progenitor cells in the bone marrow so that affecting the hemopoiesis resulted in anemia. These hematological abnormalities could potentially cause serious clinical implications. This study was conducted to determine the prevalence of anemia in HIV-infected patients in Bali. A total of 243 medical record data from HIV-infected patients at Wangaya Hospital Denpasar Bali and Sanjiwani Hospital Gianyar Bali between 2009 -2017 were included in analysis. Prevalence of anemia in ART-naïve patients and in patients on ART were 60.8% and 40.3%, respectively. Leucopenia and thrombocytopenia were found 8.2% and 9.4%, respectively, in ART-naïve group. While in patients with ART group leucopenia and thrombocytopenia were accounted for 6.9% and 4.3%, respectively. There was a significant difference in prevalence of anemia between ART-naïve patients and patients on ART (60.8% vs 40.3%; p < 0.05). Although the prevalence of anemia was lower in patients on ART, but anemia continues to be common in a substantial portion of HIV-infected persons. Another studies are still needed to addressing the impact of anemia on HIV-infected individuals, as well as treatment strategies and future research directions.

Keywords
anemia, HIV, antiretroviral therapy

Topic
Pharmacology

Link: https://ifory.id/abstract/QqERzAGVjep3

Corresponding Author
Muhammad Rifan

Institutions
Universitas Negeri Jakarta

Abstract
Spatial Artificial Neural Network (ANN) is proposed as a new approach to determine the level of energy consumption in the future in the Palembang region, South Sumatra. Back-propagation is used to train Artificial Neural Networks. Population size, Gross Regional Domestic Product (GRDP), economic growth, Household Energy Consumption spatially per sub-district is used for this estimate. Data for 2012-2016 is used to train Spatial Neural Networks (ANN) and Data for 2017-2018 is used to validate this new approach to electricity demand prediction. The proposed Spatial ANN approach provides relatively good predictions about energy demand in acceptable errors and high accuracy for electricity demand predictions.

Keywords
energy forecasting, spatial, neural network

Topic
Electrical Engineering

Link: https://ifory.id/abstract/uKk9x7j3aXHU

Corresponding Author
Muhammad Nur Tastaftyan

Institutions
Teknik Elektro, FPTK, Universitas Pendidikan Indonesia

Abstract
Long-term Load Forecasting is very important in the electricity industry in each country. With the demand for loads in the future, make the industry or electricity provider company produce, transmit and distribute power accurately and economically. In recent years, conventional methods and mathematical methods have been developed for energy forecasting. However, Fuzzy Logic techniques provide efficiency that is more smooth and effective than conventional methods. The Fuzzy Logic model is used based on historical data parameters including the population, gross domestic product, and average electricity prices to forecast electrical energy in the next few years. The results obtained reveal that the proposed model is able to predict future electrical loads.

Keywords
longterm, load, forecasting, fuzzy logic

Topic
Electrical Engineering

Link: https://ifory.id/abstract/YLWaPt3NhjJb

Corresponding Author
Undang Syaripudin

Institutions
UIN Sunan Gunung Djati Bandung

Abstract
The Big Five is one of the methods known in the world of psychology to interpret a persons personality, especially to find a relationship between personality and work environment. The Big Five consists of openness (O), conscientiousness (C), extraversion (E), agreeableness (A), and neuroticism (N). This study aims to predict the level of agreeableness in the classification of The Big Five. The method used in detecting this level of agreeableness is using the Certainty Factor and Naive Bayes algorithms. The results obtained in a comparison of the level of accuracy in personality prediction, the Certainty Factor algorithm get results of 80% and Naive Bayes get 90%. From these results it can be concluded that the Naive Bayes algorithm is better at predicting personality.

Keywords
The Big Five, Certainty Factor, Naive Bayes

Topic
Computer Science

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

Corresponding Author
Arief Fatchul Huda

Institutions
Faculty of Science and Technology, UIN Sunan Gunung Djati, Bandung

Abstract
The high feature space (dimension) is one of the main issues to be considered in the text clustering process. Therefore, various dimensional reduction methods have been introduced in various researches for selecting informative sub feature. Each method of reduction uses a different strategy to select sub feature, and the results are different even if using the same data set. Typically, union methods and intersection methods are used to combine selected sub feature with different reduction methods. The union method selects all feature and intersection only selects the general feature (slices) of the feature under consideration. So, the union approach causes the an increase in feature dimensions and the intersection approach causes the loss of some important feature. Therefore, in order to take advantage of a method and reduce its weaknesses, in this research proposes new approach, i.e modified union. This approach applies the union methods to select top ranking feature and applies intersection methods to the rest of the feature. In this case, feature selection uses the term variance (TV) and document frequency (DF) methods to calculate the relevance value of each feature. The effectiveness of the proposed method is tested on the data set of Hadith Shahih Bukhary. The results clearly show that the proposed method improves clustering accuracy over other methods with DB index is 2.7.

Keywords
clustering, feature extraction, hadith, Modified Union

Topic
Computer Science

Link: https://ifory.id/abstract/dqTxg7rHeMv6

Corresponding Author
Siva Hamdani

Institutions
Universitas Garut ; Badan Pengkajian dan Penerapan Teknologi; Universitas Padjadjaran; Universitas Garut

Abstract
Kiseueur (Antidesma tetrandrum blume) is an Indonesian native plant that is potential to developed to be an anticancer drug. This study aimed to determine the cytotoxic activities and apoptosis inducing mechanism of the extract and fraction of Kiseueur leaves and bark in breast cancer cell lines (MCF-7). Cytotoxic activity was carried out using the MTS assay. The expression of caspase 3 and caspase 9 pro-apoptotic proteins was observed by Western blot analysis.The results showed that the extract and fraction of Kiseueur leaves and bark had varied cytotoxic activities in breast cancer cell lines (MCF-7). Kiseueur bark extract had the strongest cytotoxic activity against MCF-7 cells with IC50 81.65 μg / mL. The extract of Kiseueur bark induced apoptotic mechanism through modulation of caspase 9 and caspase 3 protein expression.

Keywords
Cytotoxic activity, Apoptosis, MCF-7, Antidesma tetrandrum

Topic
Pharmacology

Link: https://ifory.id/abstract/BhCdPET6AfaD

Corresponding Author
Ella Fitriani

Institutions
Universitas Negeri Jakarta, Chemistry Education Department, Faculty of Mathematics and Natural Sciences, Jalan Rawamangun Muka 13220, Jakarta, Indonesia

Abstract
The chemical bond is one of the crucial topics in chemistry since it becomes a basic concept to comprehend other topics. Unfortunately, it is hard for students because it is at the microscopic level. This study proposes a way to comprehend that topic by developing a simulation of 3D molecules using Augmented Reality (AR). The data were collected by questionnaire, documentation, and interview. This study was used ADDIE procedure to develop the product. From the results of this study, it can be concluded that the multimedia-based learning media Augmented Reality has very good quality and is worthy of being used as a supporting media in chemical learning activities in the chemical bond topic.

Keywords
Augmented Reality, Chemical bond, 3D molecules, ADDIE

Topic
Chemistry

Link: https://ifory.id/abstract/nBA4vjyfGC3P

Corresponding Author
Rini Agustina

Institutions
a) Science and Technology Faculty, Universitas Kanjuruhan Malang
b) Information Technology, State Polytechnic of Malang
c) Faculty of Engineering, State University of Malang

Abstract
Mathematics is a very important branch of science mastered early to be able to create future technology. The fact is that currently mathematics is less favoured by students for reasons that are difficult and boring because they lack understanding of the concept and how to calculate it. According to an international study that reported the results of the ability of Indonesian students from PISA (program for international student assessment) in 2015 Indonesia was ranked 63rd out of 69 countries. Based on observations in several junior high schools in Malang City, data on learning outcomes of students who did not understand mathematical material were obtained, from 120 students there were only 45% (54 students) getting more than the minimum standard of mastery learning (KKM)> 75, due to lack of interest and student motivation to learn mathematics. A game is one solution that is considered appropriate for students who experience learning difficulties because psychologically children prefer learning in the form of games. The method used in this study was the Multimedia Development Life Cycle (MDLC), while the educational game design was developed using the Unity application. Games that have been made have succeeded in attracting students interest in learning and can increase the value of student learning outcomes from 120 students who have succeeded in exceeding the KKM standard of 85% or equal to 102 students, this shows an increase of 40% from previous student data.

Keywords
Android, Educational Games, MDLC, Mathematics, learning media, Unity

Topic
Computer Science

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

Corresponding Author
Aldy Rialdy Atmadja

Institutions
1) Department of Informatics, UIN Sunan Gunung Djati Bandung
2) Telkom University

Abstract
Batik is a traditional cloth made by painting motifs with Indonesian culture nuance on a plain cloth. It has always been used by the people, from their birth until marriage, even someone who died using batik cloth as a cover. Batik cloth made with philosophy and symbolic meaning. Every region in Indonesia has a characteristic according to the circumstances and character of the man himself. There are three ways to make batik, such as using stamps, handmade, printing. Every type of batik has different types of patterns, and there is a repetition of a pattern and a combination of several patterns. Based on the type of batik, handmade batik has the highest price, and printing batik has the lowest prices. For batik lovers, handmade batik would want to have, but not everyone knows how to characterize the stamps batik and often mistaken in the detection of the type of batik. Thus, only a few people can distinguish the differences between the three types of batik. It is difficult for ordinary people to recognize a batik pattern. The purpose of this research is to create a prototype system that can detect the patterns of batik motifs created by handmade or stamps. Cosine similarity is used in this research to recognize the pattern and classified handmade or stamps batik.

Keywords
Batik, Handmade, Stamps, Pattern recognition, Cosine Similarity

Topic
Computer Science

Link: https://ifory.id/abstract/QzbGxY6jrEFt

Corresponding Author
Iwan Sugihartono

Institutions
(1)Program Studi Fisika, FMIPA Universitas Negeri Jakarta, Jl. Rawamangun Muka No. 01, Jakarta Timur 13220, Indonesia
(2)Research Center for Physics, Indonesian Institute of Sciences, Banten 15314, Indonesia

Abstract
We have synthesized ZnO nanorods by hydrothermal at 95 oC for two hours on different substrates ie glass, ZnO and ITO. Morphologically, the average diameter of ZnO nanorods on glass, ZnO, ITO are 117.6 um, 133 um, 98.4 um, respectively. According to international centre for diffraction data (ICDD) number 01 079 0207, the ZnO nanorods on all substrates possess a polycrystalline wurtzite structure. Optically, ZnO nanorods on a glass substrate have strongest excitonic related ultraviolet (UV) emission. Its predicted, the ZnO seed layer deposited on glass substrate has optimum crystal structure and suppress defects related visible emission.

Keywords
ZnO nanorods, different substrate, polycrystalline wurtzite, UV emission

Topic
Material Science

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

Corresponding Author
I Gede Raditya Permana

Institutions
a) Faculty of Engineering and Technology, Sampoerna University, Jakarta 12780, Indonesia
*farid.triawan[at]sampoernauniversity.ac.id

b) Departemen Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi no 229 Bandung 40154, Indonesia

Abstract
Miura-origami pattern has taken interest of many engineers and mathematicians due to its unique foldability and wide range of engineering applications. However, its mechanical behavior is yet to be fully explored, especially when it is made by additive manufacturing (3D printing) method. In this paper, the compressive behavior of 3D printed lattice structure using the Miura-origami pattern is investigated. Polylactic Acid (PLA) material is used to make the specimen with various printing parameters, i.e infill pattern and density. Moreover, three kind of origami patterns with different folding angle and wall thickness are applied. Finally, the elastic, plastic, and fracture deformation behavior under compressive load is examined. The result is useful to develop a finite element model which can be utilized to comprehensively explore the mechanical behavior under complicated loading condition for various kind of engineering applications.

Keywords
miura-origami, 3D printing, finite element analysis, polyactic acid (PLA), deformation characteristic, material properties

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/Zbnq73WTtzgC

Corresponding Author
Elis Ratna Wulan

Institutions
UIN Sunan Gunung Djati Bandung

Abstract
This paper discusses about the comparison of the three methods in the assignment, that is the Hungarian Method, Matrix Ones Assignment, and Alternate Mansi Method. The Hungarian methods determine penalties in every row and column by decrease the smallest or largest point in row and column. The Matrix Ones Assignment determine penalties, divide minimum or maximum point in every row and column. The Alternate Mansi Method find the minimum or maximum value in each row that has unique value relate with the column. The concept of this problem is applied to car manufacturing company, with balanced data. While University Port Harcourt Project, using unbalanced data. Thus, it can be concluded that the Hungarian method is the most optimal.

Keywords
Assignment Problem, Hungarian Method, Matrix Ones Assignment, Alternate Mansi Method

Topic
Mathematics

Link: https://ifory.id/abstract/JhER9yxFCjpG

Corresponding Author
Selly Anastassia Amellia Kharis

Institutions
a) Faculty of Mathematics and Science, Universitas Negeri Jakarta, Jalan Rawamangun Muka, Jakarta 13220, Indonesia
*sellyanas[at]yahoo.com

Abstract
Innovative learning in mathematics can be doing through an approach called ethnomathematics. Application of ethnomathematics is focus to relate the material being taught with student condition in real life and encourage student to make connections between their knowledge with their application in the daily life. This paper aim to describe the application of ethnomatematics in the learning of geometry at Junior High School level. This paper uses literature study and experiment. The shapes of ethnomathematics are various results from mathematical activites that people have and develop in their community, including the mathematical concept in cultural heritage in the form of temples and inscriptions, pottery and traditional equipment, batik motifs and borders, traditional games, a local unit, and some activities that already become a culture in society. Ethnomathematics can be applied for teaching mathematics in junior high school level because this enables students to relate learning mathematics in school with their activities in their daily life. Students can easily think about mathematics because they know the application and the benefit of learning mathematics, especially in geometry learning.

Keywords
Ethnomathematics; Geometry Learning; Batik

Topic
Mathematics

Link: https://ifory.id/abstract/Tw4qKDuf6rMb

Corresponding Author
Acep Ahman Hidayat

Institutions
Department of informatics, UIN Sunan Gunung Djati
Bandung, Indonesia

Abstract
The creativity of an online store owner who develops a business in a retail business in determining a marketing strategy will affect his competitive ability with other online stores. However, services that are in accordance with costumers attitude is a stuff that should be awared by shop owners in order to improve not only customer satisfaction but also store income.The method used in this study is Market Basket Analysis to know customers attitude by analyzing data from sales transactions to show customers attitude toward one sold item and the others. Research aimed that it is necessary to have a system that can help to form a combination among products using the association rule method, the algorithm used to analyze this method is apriori and fp-growth algorithm. Result from data analysis test using monthly sales transaction data of cosmetics in Breiliant Store during November 2018 . It could be concluded that a combination of products which have strong support and confidence were Original Liquid Bleaching Seeds, Harva Peeling Gel and Castor oil. It had support value of 8.8% and 30% confidence value, with a filtering time of 0.036 seconds.

Keywords
data mining, Association Rule, Apriori algorithm, FP-Growth algorithm.

Topic
Computer Science

Link: https://ifory.id/abstract/DJwLyZaeAP9c

Corresponding Author
Zico Arman

Institutions
a) Biology Department, 9th Floor Hasyim Ashari Building, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jakarta, Indonesia
b) Universitas Negeri Culture Collection, 9th Floor Hasyim Ashari Building, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jakarta, Indonesia
c) Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia (UTM), 81130 UTM, Skudai, Malaysia
d) Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia

Abstract
Indonesia has many fermented beverages and yeast become one of the agent in fermented process. Yeasts has a role to transform carbohydrate complex into simple compound with release secondary metabolism to environment like amylase enzyme. This study aim to get the isolate of yeast that can potentially produce amylase enzyme. This research conducted in Oktober 2018 until Maret 2019 in Microbiology Laboratory of Universitas Negeri Jakarta. The screening test of potential isolate producing amylase enzyme was perfomed on yeast isolate from eight source indigenous fermented beverages that can grow in YMA medium with pH 2. Screening was carried out on YPSA medium with difussion agar method. From 53 Isolates, there is 16 isolates were able to form clear zone during one day incubation in room temperature there are IB4, IB15, IB20, IB21, IB26, IB36, IL78, IL80, IL81, IL86, IL88, IL97, IL113, IL136, IL146, and IL150, the highest amylolytic index was produce by IL86 (1,019 U/ml). Forming the clear zone is proof that yeast can transform starch become simply sugar like maltose because iodine-starch reaction performed amylose helix and iodine become I3 that filled main core helix, even iodine forms complexes with starch molecules showed a dark purple colour

Keywords
Amylase, Fermented, Yeast

Topic
Biology

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

Corresponding Author
Riska Prasetiawati

Institutions
Universitas Garut

Abstract
Lung cancer is the leading cause of cancer deaths among another types. Epidermal Growth Factor Receptor (EGFR) is a potential target in cancer cells thats belong to Tyrosin Kinase receptors, which responsible for the growth of various parts of the cell. Anthocyanidin is an aglycone of anthocyanin which has antiproliferative activity based on its antioxidant properties. The aim of this study was to find natural metabolites compound from anthocyanidins as a candidate for anti lung cancer through interaction with EGFR and obtain predictive activity, absorption, distribution and toxicity of anthocyanidin compounds. All compounds were optimized with Autodock Tools then simulated in molecular docking and predicted its absorption, distribution and toxicity. Gefitinib, a well known of EGFR inhibitor was taken as the standard for comparative analysis. Malvidins physicochemical properties qualified on Lipinskis Rule of Five, and show its good bioavailability. Molecular docking simulation showed the lowest binding energy of Malvidin to the receptor. Prediction of absorption and distribution showed Malvidin had Caco-2, HIA and Protein Plasma Binding in sequence is 1.7590 nm.sec-1; 83.1034% and 94.9441%. It is also mutagenic but non carcinogenic. Based on these data, Malvidin has the potential to be an anti-lung cancer candidate through EGFR inhibition.

Keywords
molecular docking, malvidin, toxicity, ADME, lung cancer

Topic
Pharmacology

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

Corresponding Author
Rifdah Hasanah

Institutions
(a) Biology Department, 9th Floor Hasyim Ashari Building, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jakarta, Indonesia
(b) Universitas Negeri Culture Collection, 9th Floor Hasyim Ashari Building, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jakarta, Indonesia
(c) Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia (UTM), 81130 UTM, Skudai, Malaysia
(c) Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia

Abstract
The aim of this study is to demonstrate screening isolates of yeast with high cellulase activity from indigenous fermented beverages of Indonesia. This research conducted in Oktober 2018 until Maret 2019 in Microbiology Laboratory of Universitas Negeri Jakarta. The screening test of potential isolate to producing cellulase enzyme was perfomed on 53 yeast isolate from eight source indigenous fermented beverages that can grow in YMA medium with pH 2. Screening was carried out on CMC medium with difussion agar method. The cellulose activity of the organisms was measured diameter of a clear zone around the colony on Carboxymethyl Cellulose (CMC) agar media. The result of screening potential isolate to producing cellulase showed from 50 isolates, 17 isolate of yeast performed has potentially cellulose activity. They were selected according to their capabilities of degrading carboxymethyl cellulose (CMC). Among these 17 strains, 3 strains namely IL112, IL125 and IL78 showed higher levels of enzyme activity based on celulolytic index value.

Keywords
Yeast, Fermented, Cellulase

Topic
Biology

Link: https://ifory.id/abstract/Qu4fCpGKnrey

Corresponding Author
Tetep Tetep

Institutions
Institut Pendidikan Indonesia
Jalan Terusan Pahlawan No 32 Garut 44151 West Java
Indonesia

Abstract
Augmented reality is an interactive digital media where objects in real-world environment is visualized through a computer-generated image. This study aims at developing an application to visualize abstract historical objects into more concrete objects so that it can be used as an instructional media. The development was done using Web Aurasma Based Studio and Reveal Mobile in six stages including concept, design, material collecting, assembly, testing and distribution. The results showed that the developed augmented reality application was highly effective in visualizing historical facts so as to motivate students in studying historical facts in a more real and concrete way.

Keywords
Augmented Reality, Historical Facts, Web Aurasma Studio

Topic
Computer Science

Link: https://ifory.id/abstract/nfBqYEjVCHu3

Corresponding Author
Siska Titik Dwiyati

Institutions
Pendidikan Teknik Mesin, Universitas Negeri Jakarta

Abstract
The purpose of this research was to study tensile properties of 3D printing ABS material with axial and lateral direction. The specimen was printed according to ASTM D 632-02 by layer thickess variations around 0.1 mm, 0.2 mm and 0.3 mm. Moreover, three specimens was made for each printing direction. Tensile test was performed using Zwick Roell Series Z 021 machine. Then, the fracture surface was studied with scanning electron microscope (SEM). Based on the research from 6 variations layer of 3D printing, the optimal result was found on the axial direction of 0,3 mm thickness layer with tensile strength 30,6 MPa and ultimate tensile strength 550,81 N. The voids were seen at the fracture surface.

Keywords
3D printing, tensile properties

Topic
Material Science

Link: https://ifory.id/abstract/9V7Xjr3wJKbz

Corresponding Author
Auliya Afifah

Institutions
Department of Chemical Education, UIN Sunan Gunung Djati bandung, Jalan A.H. Nasution No. 105 Cibiru Bandung 40614 Indonesia
*zenabsc[at]uinsgd.ac.id

Abstract
This research was conducted to produce teaching materials in the form of e-modules on alternative fuels material based on green chemistry. The presentation of material and visualization that used in this e-module based on green chemistry includes the losses caused by the use of fuel oil and the solutions offered to overcome them by the presence of alternative fuels based on green chemistry. This research uses the Design Based Research method with the ADDIE model. The e-module is tested for its feasibility. The results of the feasibility test show 94-100% of the respondents agreed to all the criteria in the e-module. These results indicate that the green chemistry-based alternative fuel e-module that has been made is feasible to use.

Keywords
e-module; alternative fuels; green chemistry

Topic
Chemistry

Link: https://ifory.id/abstract/4Gaxn73mqrWP

Corresponding Author
Mukhlissul Faatih

Institutions
a) Center for Research and Development of Health Resources and Services, NIHRD Indonesia
Jl. Percetakan Negara 29 Jakarta Pusat Indonesia
* faatih44[at]gmail.com
b) Center for Research and Development of Biomedical and Basic Technology of Health, NIHRD Indonesia

Abstract
The Indonesian Ministry of Health responsible for the supply and distribution of logistics needed in the implementation of the Immunization Program at national, provincial, district, and health facility levels. This study discussed cold chain management of vaccines from Provincial Health Office to the health center facilities and tested the vaccine potency. We have used a cross-sectional study involving a multistage sampling. Primary health centers, clinics and hospitals were selected from each two districts of eleven provinces. The data were analyzed descriptively and analytically using Chi Square Test. Vaccine potency test was carried out by Kendrick test. This study confirmed that the cold chain management of vaccines at the provincial level was better than the districts and health center facilities. The quality of Vaccine Vial Monitor (VVM) was in gradually decline from provinces to districts and health center facilities. Potency test results of DPT and polio vaccines suggested that all vaccines are still qualified in all study sample locations.

Keywords
vaccine vial monitor; potency test

Topic
Pharmacology

Link: https://ifory.id/abstract/UWdqNf2cQ6Fk

Corresponding Author
Ria Mariani

Institutions
Department of Pharmacy, Garut University, Jati 42B, Garut 44151, Indonesia

Abstract
Ipomoea aquatica is Convulvulaceae plant that is widely consumed in Southeast Asia as a vegetable. The plant contain various bioactive constituents, e.g. phenols and flavonoids. Water spinach and land spinach are two varieties of Ipomoea aquatica in Indoneaia. Both plants have been analyzed for their radical scavenging activity using DPPH (2,2-diphenyl-1-picrylhidrazil). Total phenol was measured using Folin Ciocalteau and total flavonoid was measured using AlCl3. Water spinach has higher antioxidant activity than land spinach and there were correlation between antioxidant activity and total phenol/flavonoid content.

Keywords
Antioxidant, Ipomoea aquatica, phenol, flavonoid

Topic
Pharmacology

Link: https://ifory.id/abstract/VTn672jYmAdf

Corresponding Author
Asri Lestarini

Institutions
a) Faculty of Medicine and Health Sciences, Warmadewa University
Jalan Terompong no 24, Denpasar, Bali 80235
*asrilestarini[at]gmail.com

Abstract
The main predisposing factor of infant mortality is Low Birth Weight (LBW). LBW can have long-term effects on child developments, therefore the high incidence of low birth weight can affect the quality of human resources. The purpose of this study was to determine the predisposing factors of the occurrence of LBW in Payangan sub-district, Bali. This research was analytical research with a case-control design to assess predisposing factors of the occurrence of LBW by assessing medical records of pregnant women. The sample of this study was 92 mothers with a history of childbirth. Chi-square method was done to test the significance of each variable on the independent variable. Results obtained from five predisposing factors, those which had correlations to the incidence of LBW in Payangan Health Center were twin births, nutritional status, and anemia with a P value of <0.05. The conclusion made from the results of this study was the variables that have significant effect were variables of twin births, nutritional status, and anemia, while parity did not have a significant effect. A Suggestion made that it can provide benefits to health workers at health centers and pregnant women about LBW risk factors.

Keywords
low birth weight, nutrition

Topic
Biology

Link: https://ifory.id/abstract/9CW6DudxXRL2

Corresponding Author
HINDARTO HINDARTO

Institutions

Abstract
Electroensephalograph (EEG) is a device that can capture electrical activity in the brain and inform the minds condition such as emotional, fatigue, alertness, health and concentration level. Modeling the EEG signal before classification needs to be done, several studies have been carried out using Wavelet, Power Spectral, or Autoregressive transformations as feature extraction. This study explains the application of K-Nearest Neighbor as a classification and Fourier transform by taking the value of Power Spectralfor feature extraction from the wave signal Electro Encephalo Graph (EEG). This study aims to identify EEG signals used for cursor movements. The data used are EEG data originating from the 2003 BCI competition (BCI 2003 Competition). The data contains data class 0 (for movement of the cursor up) and class 1 (for movement of the cursor down). Decision making is done in two stages. In the first stage, the Power Spectral value for each EEG signal is used to extract the feature. The feature is input to K-Nearest Neighbor. In the second stage of the identification process into two classes (class 0 and class 1) EEG signal data files, there are 260 EEG signal file training data and 293 from EEG signal file testing data, so that the total becomes 553 EEG signal data files. The results obtained for the classification of EEG signals are 85.6% of the signal data tested

Keywords
EEG, BCI, Power Spectral, K-Nearest Neighbor

Topic
Computer Science

Link: https://ifory.id/abstract/GPdfa9qby3MB

Corresponding Author
Lida Amalia

Institutions
Institut Pendidikan Indonesia Garut

Abstract
Javanese Edelweis (Anaphalis javanica) is a pioneer plant that has enormous ecological benefits. This plant is living on volcanic ash deposits and crater soils as on Mount Papandayan. The presence of Javanese Edelweis are endangered. This study aims to: (1) compare the density of Javanese Edelweis on Mount Papandayan especially in Tegal Alun, Tegal Bungbrun and Pondok Saladah; (2) knowing the effect of abiotic factors (temperature, light intensity and soil pH) on the density of Javanese Edelweis. The method used in this research is quantitative descriptive research method. Data collection was carried out using the 100 meter belt transect method with a width of 5 meters in three sample locations: Tegal Alun (28 transects), Tegal Bungbrun (3 transects) and Pondok Saladah (10 transects). The results indicate that there is a difference in the density of Javanese Edelweis between TegalAlun, Tegal Bungbrun and Pondok Saladah. The density value in Tegal Alun is 2275.7 trees/hectare, Tegal Bungbrun 946.7 trees/hectare and Pondok Saladah 366 trees/hectare. Whereas for abiotic factors it is known that air temperature, light intensity and soil pH simultaneously influence the density of Javanese Edelweis with R value 85% and influence 70%.

Keywords
Anaphalis javanica, Javanese Edelweis, abiotic factors, density.

Topic
Biology

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

Corresponding Author
Niken Subekti

Institutions
a) Biology Department, FMIPA, Universitas Negeri Semarang Jalan Taman Siswa, Semarang 50229, Indonesia
*nikensubektiunnes[at]gmail.com
b) Ibnu Sina Institute for Fundamental Science Studies, Universiti Teknologi Malaysia,
81310 UTM Skudai, Johor, Malaysia

Abstract
Callosobruchus maculatus (F.) is a stored pest that cause demage to nuts. One of the techniques of preservation of foodstuffs from the insects pest that already done is by using chemical pesticides and fumigant. The use of chemicals continuously can affect to peoples health and pollute the environment and non-target organisms. Pest control using essential oils is considered safer and environmentally friendly. Essential oils used in this study are A. nardus, E. globulus, and M. piperita. It made nanoemultion to reduce evaporation. This research aims to analyze the insecticidal activity of chlorpyrifos and the three types of essential oils as well as their repellent to adult Callosobruchus maculatus (F.). The research method consists of sample preparation, manufacture nanoemultion of essential oils, mortality test, and repellent test. The results showed that the pesticide chlorpyrifos has high insecticidal percentage compared with essential oils, but its use is not environmentally friendly. However, all the encapsulated essential oils in this study has potential to be used as a environmentally friendly pesticides to control the insect pest Callosobruchus maculatus (F.).

Keywords
Callosobruchus maculatus (F.), chlorpyrifos, essential oil

Topic
Biology

Link: https://ifory.id/abstract/A97uBKNGjRJw

Corresponding Author
Nizar Alam Hamdani

Institutions
Universitas Garut

Abstract
The increasing human need for natural resources causes global warming. Innovative green technology is one of the eco-friendly actions that can be taken by small and medium sized enterprises (SMEs). The purpose of this study is to discover how SMEs can possibly use green technology. To this end, an explanatory survey was conducted on a sample of 286 batik business units. The results reveal that there are several innovative green technologies that can be used by SMEs. The findings of this study may imply that innovative green technologies can be used to improve SMEs environmental performance.

Keywords
Innovative Green Technology, Green Technology, SMEs.

Topic
Management Science

Link: https://ifory.id/abstract/knUH2qhfFYjQ

Corresponding Author
Dodit Suprianto Suprianto

Institutions
(a) Information Engineering, Politeknik Negeri Malang
(b) Electrical Engineering, Politeknik Negeri Malang,
(c) Science & Technology, Universitas Kanjuruhan Malang

Abstract
Long queues during student pick-up are a major problem in some elementary schools and kindergartens. Sometimess parents dont find their children in school because they may be buying food, being in class or playing in a large school area, so their parents have to wait for a long time for their children to go out to the gate. Conversely, sometimes parents are late in picking up their children, which causes the school to keep students from leaving school without the permission of the teacher or officer, and they also have to ensure that all students have returned to their homes. Parents complaints about this pick-up problem are a serious concern for the school. Moreover, the news of the kidnapping of children aged 4-12 years (the crime of trafficking) will worry all parties. This study aims to design integrated applications by utilizing RFID, Microcontroller, Socket TCP, Text To Speech, Client Server and Database as a student pickup model by parents as registered RFID cardholders. Based on the identification of the parent RFID card that is read by the RFID reader sensor and matched with the data in the database, then the application will automatically call the name of the student according to his RFID through the technique of text to the speech voice synthesizer. The method of developing applications using Waterfall. The results of implementing this application system show that the performance accuracy of 90% can be used properly.

Keywords
RFID, Mircrocontroller, Arduino, Socket TCP, Text To Speech, Voice Synthesizer, Client Server Database

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/xNRjy9P7Anwd