Indonesia Conference Directory

Corresponding Author
Nizar Alam Hamdani

Institutions
Universitas Garut, Universitas Garut; Universitas Pasundan

Abstract
In Society 5.0, financial capital is no longer the key, but data that are interconnected with each other. The Internet of things will be a new normal, dedicated to unlock human potentials. The purpose of this study is to analyze the feasibilities and challenges of the implementation of fintech in small and medium industries. To this end, a survey was conducted on a sample of 60 small and medium industries. It was revealed that the implementation of fintech in small and medium industries did not seem ready to be achieved due to the limitations in technology infrastructure, data and information, human resources and policy. Therefore, improvement to these factors should be made to realize the human-centered and technology-based society.

Keywords
Society 5.0; Financial Technology; SMEs

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/BpU9Nac7KAtb

Corresponding Author
aji najihudin

Institutions
a) Fakultas MIPA, Universitas Garut (UNIGA), Garut, Indonesia
*ajinajihudin[at]uniga.ac.id

Abstract
Gelatin is a biopolymer derived from collagen proteins extracted from the skin or animal bones.The aim of this research was to formulated paracetamol tablets by using chicken feet gelatin, evaluated tablets and dissolution test. The preparation of chicken feet gelatin was done by an acid method using 4% HCl solvent. Preparation of paracetamol tablets using chicken feet gelatin and commercial gelatin was done by wet granulation method with the variation of binder concentration of 1.5%, 3%, and 4.5%. The granules, tablets, and dissolution tests were evaluated. Testing of in vitro dissolution of paracetamol tablets was done by paddling method in phosphate buffer pH 5.8 as dissolution medium. The yield of chicken feet gelatin obtained was 5.06%. The results of evaluation paracetamol granules and tablets showed that six formulas are qualify except for the friability of F1 and F2. Paracetamol tablets using chicken feet gelatin as binder showed a faster dissolution profile and qualify compared to commercial gelatin binders. Paracetamol tablets using chicken feet gelatin as the binder with a concentration of 4.5% (formula 3) showed the best results of tablets evaluation and in the 30th minute dissolve as much as 81.55%, it showed the best dissolution profile.

Keywords
Disolution, Paracetamol, chicken feet gelatin, wet granulation

Topic
Pharmacology

Link: https://ifory.id/abstract/jNcaryKt4BT3

Corresponding Author
Chaerul Rochman

Institutions
UIN Sunan Gunung Djati Bandung

Abstract
This study aims to describe the level of literacy of the physics concept of natural resources in high school students. The method used in this study is a participatory descriptive method. The sample is eleventh-grade students from high schools around the location of natural resources in West Java totaling 436 people. The instrument used was a literacy test in the form of four questions each asking how students processes, concepts, contexts, and attitudes towards natural resources were closest to their school or residence. In addition to expressing literacy tests, treatment was also given by giving material of natural resources. Data analysis was carried out analyzing the results of literacy disclosure followed by literacy tests, analyze the literacy component, and compare the resultsdata processing. The conclusions of this study are: (1) the literacy skills of physics concepts about local natural resources show a variety of both aspects of the process, concepts, and contexts and attitudes, (2) the expression of students about the basic concepts of natural resources varies, and (3) There is a correlation between students literacy skills in the basic concepts of physics enrichment material with the ability to understand the material enrichment of natural resources.

Keywords
enrichment materials, physics literacy, natural resources

Topic
Management Science

Link: https://ifory.id/abstract/3VxQHqTWCu8U

Corresponding Author
Wiwik Sulistiyowati

Institutions
1,2,3 Industrial Engineering Department, Engineering Faculty
Universitas Muhammadiyah Sidoarjo

Abstract
Product quality is one of the most important things in a product offered. Flat glass is one of the many products produced because of high consumer demand. This requires the company to run the production process well to produce products that meet consumer expectations. The purpose of this study was to determine the type and amount of waste in the glass-making production process and analyze the root causes of the glass-making process. The method used in this study is a mixed method, namely quantitative and qualitative approaches, which are directly measured using the Lean Manufacture concept approach. Lean manufacturing is a production activity that focuses on reducing waste in all aspects of the companys production activities. From the results of the study, it can be concluded that the cause of reject is influenced by two factors, namely humans and machines, human factors due to not running the standard operational procedure (SOP) properly, the factors of the machine due to not doing the appropriate machine settings at a particular station.

Keywords
Lean Manufacturing, Product Quality, Root Cause Analysis.

Topic
Industry Engineering

Link: https://ifory.id/abstract/PX2cUgMyRH9J

Corresponding Author
Mufid Ridlo Effendi

Institutions
a) Department of Electrical Engineering
Faculty of Science and Technology
UIN Sunan Gunung Djati
Bandung, Indonesia
*mufid.ridlo[at]uinsgd.ac.id
b) Department of Electrical Engineering
Faculty of Science and Technology
UIN Sunan Gunung Djati
Bandung, Indonesia
(c) Department of Instrumentation,
Control and Power Engineering
Bandung State Polytechnic of Manufacture
Bandung, Indonesia
(d) Department of Electrical Engineering
Faculty of Science and Technology
UIN Sunan Gunung Djati
Bandung, Indonesia
(e) Department of Electrical Engineering
Faculty of Science and Technology
UIN Sunan Gunung Djati
Bandung, Indonesia

Abstract
A monitoring technology for large area with low-cost and high efficiency is highly demanded. Wireless Sensor Network (WSN) is the solution for a monitoring technology. However, not all monitoring must be continuous, there are some monitoring that can be carried out periodically. Therefore it is possible to invent a mobile sensor communication system on multicell networks. This research aims to implement a WSN system by collecting data from mobile sensors on multicell networks. The focus of research is on the design of mobile sensor communication with low-cost device as transceivers, namely NodeMCU. The design is implemented using 4 NodeMCU units, 3 of them are functioned as access points, while 1 unit is employed as a client connected to the sensor. The experimentation was conducted by varying transmission distances of sensors with and without barriers. Moreover, handover and blankspot areas are also included accordingly. The result of experimentation shows that the usage of low-cost devices has still possibility to built monitoring mechanism on multicell networks eventhough the transmission power was significantly influenced by the availability of barriers.

Keywords
Blankspot; handover; mobile sensor; multicell networks; NodeMCU; Wireless Sensor Network (WSN)

Topic
Electrical Engineering

Link: https://ifory.id/abstract/CYqBTe8pg7rM

Corresponding Author
Arif Budiraharja

Institutions
Universitas Pendidikan Indonesia; Universitas Garut; Universitas Pendidikan Indonesia

Abstract
The Blockchain system is a widely distributed database on the network, this technology has a significant impact on the business industry and financial services. The purpose of this research is to design a blockchain for sharia banks. The study was conducted on several Islamic banks in Indonesia. Based on the results of the study it was found that the blockchain design must be adjusted to the needs of banking users first and adjusted to the capabilities of the technology infrastructure. The existence of a blockchain can cause disruptive to human elements in the presence of distributed ledgers, therefore the transition of blockchain technology must be carefully planned.

Keywords
Blockchain System; Financial Technology, Sharia Bank.

Topic
Management Science

Link: https://ifory.id/abstract/fJR6YhMrUTeV

Corresponding Author
sepwin sitompul

Institutions
Faculty of Engineering, Sampoerna University
Jl. Pasar Raya Minggu No 16, Jakarta Selatan, Indonesia

Abstract
Lignin is an essential bio-polymer which is required in the formation of plant cell wall. The degradation of lignin in the nature is a major challenge due to the complexity of its structure. It has been long known that white rot fungi produce ligninolytic enzyme that can degrade lignin efficiently. To identify white rot fungi, screening test was carried out by testing different strains of Basidiomycota using czapek dox agar supplemented with Guaiacol (0,02%). The results showed that two out of thirteen strains of Basidiomycota have ligninolytic activity. In this study, we successfully obtained two strains that have ligninolytic activity. This study sheds light on further observation of these strains which potentially can be used for lignocellulose waste treatment especially oil palm empty fruit bunch (OPEFB).

Keywords
basidiomycota, degradation, ligninolytic, white rot fungi

Topic
Biology

Link: https://ifory.id/abstract/DN6hYKQcVEZj

Corresponding Author
Mochamad Romdhon

Institutions
Universitas Garut
Jl. Samarang No. 52A Garut Indonesia
mromdhon[at]uniga.ac.id

Abstract
Financial technology is very important to improve banking performance in carrying out its business activities. The purpose of this research is to determine the role of financial technology in improving the financial performance of a banking company in Indonesia. The method used in this research is a survey. Based on the results of the study, it is known that the role of financial technology related to the payment, transfer, clearing and settlement systems in the first quarter of 2015 to the fourth quarter of 2017 can improve banking financial performance with the loan to deposit ratio level in healthy criteria. So as to continue to improve financial performance, banks are expected to make continuous improvements for the technology used and always innovate the banking product to satisfy the public as customers.

Keywords
financial technology, financial performance, banking.

Topic
Management Science

Link: https://ifory.id/abstract/FMjYrZ6qztDe

Corresponding Author
Sukartono Sukartono

Institutions
Faculty of Agriculture University of Mataram

Abstract
The implementation of conservation agriculture involve minimum soil disturbance, permanent soil cover through crop residues and cover crops is good sound for improve soil fertility status and achieving higher crop productivity. A field experiment with split plots design in which conservation-soil tillage practices as main plots and beans cover crops intercropped to maize as sub plots were tested in rainfed agriculture area of South Lombok. Four soil tillage practices comprise of: P1: Direct dibbling, no tillage; P2: Soil ripping; P3: Permanent planting holes and P0: conventional intensive tillage. Beans cover crops were: C0 = no cover crop; C1 = lab-lab; C2 = cowpea; C3 = hybrid bean; C4 = Velvet bean (Mucuna sp). These were intercropped to maize as main crop. The results showed that conservation agriculture base maize with treatments of reduce tillage practices and legume cover crops improved the soil fertility including bulk density, C-org, N, P and K, and CEC. The highest soil fertility status was recorded at P3 and subsequently followed by P2 and P1. Overall, Reduced tillage practices particularly P3 with cowpea and hybrid beans as intercropped significantly increased the maize yield of 51%. Cover crop of lablab and vegetable bean have a significant effect on weight of maize fresh biomass and weight of ear, while cowpea and lablab bean have a significant effect on weight of maize dry seeds. Maize yields with CA approach average 9.95 ton per ha higher than the conventional system 7.21 ton ha-1.

Keywords
conservation agriculture, tillage practices, legume crops

Topic
Environmental Engineering

Link: https://ifory.id/abstract/QZdkfUyL3WDh

Corresponding Author
Riser Fahdiran

Institutions
Department of Physics, State University of Jakarta

Abstract
We employed molecular dynamics simulation to explore the melting dynamics of Gold thin film due to ultrashort high-intensities laser irradiation. The film has dimension of 10 nm x 10 nm in lateral periodic condition and thickness 10 nm with free condition. The system is suppressed by the laser energy slightly above melting threshold and simulated under homogeneous and instantaneous energization. Within several ps the system already melt and the evolution are followed based on trajectory of each atom dynamics. During the expansion of the film, we also performed the local structure change based on Common Neighbor Analysis (CNA) method. Structure factor analysis indicated that the film is melted completely at the end of simulation, t = 20 ps.

Keywords
Melting; Thin Film; Gold; Molecular Dynamics

Topic
Material Science

Link: https://ifory.id/abstract/YAXrh2bxwgf8

Corresponding Author
Nasrul Arahman

Institutions
Chemical Engineering Department
Universitas Syiah Kuala
Banda Aceh Indoensia

Abstract
Immersion-precipitation method was conducted to prepare polyvinylidene &

Keywords
triethyl phosphate (TEP), green solvent, physicochemical characteristic, Hansen solubility parameter.

Topic
Chemical Engineering

Link: https://ifory.id/abstract/tYK6uQp8rcRC

Corresponding Author
Faizah Min Fadhlillah

Institutions
Garut University

Abstract
Antioxidants are compounds that are able to eliminate, cleanse, and resist radical effects. Antioxidants can stabilize free radicals by complementing the lack of electrons possessed by free radicals. Several studies have shown that citrus leaves of other spesies have been shown to have antioxidant activity. This study aims to determine the antioxidant activity of ethanol extract, n-hexane fraction, ethyl acetate fraction and water fraction of garut orange leaves (Citrus reticulata Blanco) using DPPH (2,2-Diphenyl-1-Picrylhydrazyl) method. Garut orange leaves were extracted with ethanol 96% by macerator apparatus. Concentrated extracts were fractionated by liquid liquid extraction method with n-hexane, ethyl acetate and water solvent. Furthermore, the ethanolic extract, n-hexane fraction, ethyl acetate fraction and water fraction of garut orange leaves were tested for antioxidant activity using the DPPH (2,2-Diphenyl-1-Picrylhydrazyl) method. The antioxidant activity test results showed that ethanolic extract of garut orange leaves had better antioxidant activity, followed by n-hexane fraction, ethyl acetate fraction and water fraction.

Keywords
garut orange leaves, antioxidant activity, DPPH

Topic
Biology

Link: https://ifory.id/abstract/Qew3VhRzpE8d

Corresponding Author
DENI MUDIAN

Institutions
a) Sport Education, School of Posttgraduate Studies Universitas Negeri Jakarta.
Jln. Rawamangun Muka, Jakarta Timur 13220

b)Lecture Sport Education, School of Posttgraduate Studies Universitas Negeri Jakarta.
Jln. Rawamangun Muka, Jakarta Timur 13220

c) Lecture Sport Education, School of Posttgraduate Studies Universitas Negeri Jakarta.
Jln. Rawamangun Muka, Jakarta Timur 13220

Abstract
The purpose of this study is to know the whether the application of psychological skills training methods such as relaxation exercises, imagery, and relaxation-imagery can enhance a significant effect on improvement referee performance in leading a football match. This Research conducted on the referee PSSI Subang, and method in research is an experimental method and the design of two control one experimental group pretest-posttest design. Instruments to collect in this study is the referee assessment form. This assessment form is an official form issued by FIFA and is used by the PSSI to measure the performance of the referee in a football game lead. The result of the test shows that method of psychological skills training such as relaxation exercises has significant influence on performance of the referee in a football game lead, psychological skills training methods such as imagery exercises significant influence on the performance of the referee in a football game lead, psychological skills training methods such as relaxation exercises -imagery significant influence on the performance of the referee in a football game lead, and psychological skills training methods of relaxation-imagery has more significant influence on the performance of the referee in a football game lead. Suggestions for PSSI and the referee commission, in order to provide psychological skills training in every session, because the psychological skills training is crucial to improve the performance of the referee in a football game lead.

Keywords
Psychological Skill Training Method, referee, performance

Topic
Sport Science and Technology

Link: https://ifory.id/abstract/XMmnwgjU2BAH

Corresponding Author
Daryanto, M.T. -

Institutions
Electrical Engineering Education Study Program, Faculty of Engineering, Jakarta State University, Jakarta, Indonesia

Abstract
Delivery of electrical power from the power plant to the load center of widespread done through transmission networks with limited capacity. The operation of such an electric power system can cause a stable condition to be disturbed and a worse result is a total blackout. This study aims to investigate the influence of dynamic loads on the electric power system oscillation damping. The behavior of the electric power system after disruption studied to determine the effect of parameter changes the dynamic load of the electric power system oscillation damping. The electric power system model in this study is a dynamic load model and synchronous generator model. Dynamic load models are developed from the Hill model based on load power responses due to voltage changes. The mathematical formula that describes the interaction between voltage and load power is realized by first-order differential equations. While the electric power system model is based on a model developed by Demello, which is a single electric generator connected to an infinite bus. The synchronous machine in this model is obtained from the classical Park model by assuming that (1) the condition is balanced, (2) the stator coil resistance is ignored, (3) the influence of saturation is ignored, (4) the transmission network is assumed to be zero, and (5) the local load is assumed the voltage depends only on the real power. Based on the two models, an overall block diagram is made that illustrates the interaction between dynamic loads and the electric power system. The results showed that there was an increase in the stability of the electric power system with dynamic load feedback and a decrease in the rotor angle and increase in voltage. So that it can be concluded that changes in dynamic load parameters affect the stability of the electric power system.

Keywords
Keywords: damping, oscillation, dynamic load parameters, electrical power system, synchronous generators.

Topic
Electrical Engineering

Link: https://ifory.id/abstract/nc28yPjXFHh3

Corresponding Author
Moh Ahsan

Institutions
a) Informatics Study Program, Fakulty of Science and Technology, Universitas Kanjuruhan Malang, Jl. S. Supriadi, No. 48 Malang Jawa Timur 65148, Indonesia. *ahsan[at]unikama.ac.id
b) Program Studi Sistem Informasi, Fakultas Sain dan Teknologi, Universitas Ma Chung Malang, Jl. Villa Puncak Tidar Blok N No. 1, Dau, Malang, Jawa Timur 65151
Jawa Timur 65151

Abstract
Multiple intelligence is intelligence possessed by every human, among these intelligences are linguistic intelligence, musical intelligence, naturalist intelligence, visual-spatial intelligence, logic-mathematical intelligence, interpersonal intelligence, intrapersonal intelligence, and kinaesthetic intelligence. Various ways are carried out by researchers to find out intelligence such as through numbers, pictures, music, words, physical and social-emotional activities. The purpose of this study is to develop a decision support system to determine intelligence on children by using the Weighted Product method, Analytical Hierarchy Process, Simple Additive Weighting and TOPSIS. Comparison of the four methods used to find the best results among the methods used in determining childrens intelligence. The Weighted Product method has the highest preference value of 0.176400366 namely Kinaesthetic Intelligence, Analytical Hierarchy Process Method has the highest preference value 0.690048152 Kinaesthetic Intelligence, Simple Additive Weighting Method has the highest preference value 0.890555556 Kinaesthetic Intelligence and TOPSIS method has the highest value 0.134598738 namely Musical Intelligence. To evaluate the suitability of the right decisions in determining intelligence, the results of these methods are compared with the results of the decisions of a psychologist to produce a valid decision. The results show that the four methods that have been compared and the results of experiments validated by experts show that the intelligence suitability of children with the Weighted Product method, Analytical Hierarchy Process, Simple Additive Weighting has the right preference value with the highest value of each result obtained. It can be concluded that the decision of the decision support system is valid and successful represents expert judgment

Keywords
Multiple Intelligence; decision support system; children

Topic
Computer Science

Link: https://ifory.id/abstract/Lwq2hneDb7tZ

Corresponding Author
Maria Paristiowati

Institutions
a) Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jakarta 13220, Indonesia
* maria.paristiowati[at]unj.ac.id
b) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia

Abstract
Green Chemistry principal was introduced in an academic environment in the 1980s as guidelines for sustainable development focused on chemistry. Efforts to realize these expectations can be applied through education by developing learning process based on environmental. This study aims to apply the concept of Green Chemistry in education, especially chemistry learning by producing natural acid-base indicators from the extract of roses (Rosa sp) and Rosella (Hibiscus sabdariffa L). These indicators are produced by the method of extraction using 96% ethanol solvent in an acidic atmosphere at pH 3-4. The results of maceration then extracted in three different solvents (ethanol, n-hexane, and chloroform). The extract was tested in solution with pH 1-12 and used as an indicator to identify the solutions and titration in acid-base topic. It concluded that the roses and Rosella can be used as an alternative raw material for acid base indicator. The use of roses and Rosella indicates an attempt to have applied the principles of green chemistry, including the prevention of the formation of hazardous wastes, the design of safe chemical products, the use of renewable materials, the design of materials that are easily degraded, and the use of safe solvents.

Keywords
Green chemistry; acid-base indicator; sustainable development

Topic
Chemistry

Link: https://ifory.id/abstract/fAV9zgcZPvN4

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
Dengue virus is a member of the genus Flavivirus of the family Flaviviridae. The global incidence of dengue has grown dramatically in recent decades. The dengue virus has 10 viral proteins, 3 structural proteins and 7 nonstructural proteins. To perform the molecular functions required for invasion, replication, and spread of the virus, proteins encoded by dengue virus must interact with and alter the behavior of protein networks in both hosts. In this paper, we present a clustering dengue virus based on Tribe Markov Clustering (T-MCL). T-MCL is a graph clustering method which is the modification of Markov Clustering Algorithm (MCL). T-MCL process is built using R programming language is applied to PPI networks of 26 dengue virus genes data obtained from Virus Pathogen Database and Analysis Resource (ViPR) in 2010-2014. Because data processed in bioinformatics usually have a vast amount of information and have high sparsity, a method to save memory usage and make the computing process faster is needed. This research concludes that T-MCL method produces 7 groups of 26 dengue viral protein sequences with groups having one or more group centers using sparse matrix.

Keywords
Tribe Markov Clustering; Sparse Matrix; Dengue Virus

Topic
Mathematics

Link: https://ifory.id/abstract/wU6ZATKFRDcj

Corresponding Author
Maria Paristiowati

Institutions
a) Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jakarta 13220, Indonesia
* maria.paristiowati[at]unj.ac.id

Abstract
This study aims to analyze the profile of technological pedagogical and content knowledge (TPACK) chemistry teachers at one of the schools in Jakarta. The criteria for the teachers analyzed are professional teachers who have been certified and have more than 20 years of teaching experience. The method used in this study is a qualitative descriptive research method. The data sources were collected through the TPACK questionnaire referring to the Schmid instrument (2009), lesson plan analysis, observation of the learning process, and interviews. The results show that chemistry teachers can apply learning methods that vary each meeting according to the characteristics of acid-base material. The teacher also utilizes technology information & communication (ICT) based learning media to simplify and clarify material delivery. It can be concluded that teachers have pedagogical content knowledge (PCK) and technological content knowledge (TCK). The use of ICT media such as interactive power points, videos and mobile phones to support selected learning methods, shows that teachers are also competent in technological pedagogical knowledge (TPK). The results of the study concluded that the teacher had integrated all TPACK components into acid-base learning.

Keywords
Technological pedagogical and content knowledge; chemistry teacher profiles;

Topic
Chemistry

Link: https://ifory.id/abstract/GY7bMhunUzq3

Corresponding Author
Putu Indah Budi Apsari

Institutions
Faculty of medicine and Health Sciences, Warmadewa University

Abstract
Tuberculosis (TB) and malnutrition are the main causes of morbidity and mortality among children in developing countries. Tuberculosis become worse if there are present of malnutrition. In contrary, malnutrition can be caused by chronic inflammatory disease such as TB. This study aimed to analyze the correlation between tuberculosis and nutritional status among children in North Lombok, West Nusa Tenggara, Indonesia. This cross sectional study recruited child TB aged under 18 years as participants. TB was diagnosed by TB scoring in Children, Tuberculin Test, Fine Needle Aspiration Biopsy (FNAB) and Thorax Photos, and nutritional status was assessed using Center for Disease Control and Prevention (CDC) chart. Total 130 children were identified, 65 children with TB and 65 healthy children as control. This study showed that pulmonary TB was present in 72.3% of case, Lymphadenitis TB was 16%, and mixed pulmonary and lymphadenitis TB were 2%. Under-nutrition child was found in 63.1% of cases, malnutrition child was found in 29.2% of cases. There was significant correlation between tuberculosis and malnutrition among children (p<0.05). The highest proportion of TB was in children under five years (52.3%). TB is strongly correlated with malnutrition among children.

Keywords
malnutrition, tuberculosis, children

Topic
Biology

Link: https://ifory.id/abstract/C8RDuYcPWHxK

Corresponding Author
Shendi Suryana

Institutions
Universitas Garut

Abstract
Theophylline, salbutamol sulfate and glycerylguaiacolate are active substances for treat asthma (dyspnoea). Combination theophylline, salbutamol sulfate and glycerylguaiacolate in drug preparation have to produce pharmacological effect, so the drug preparation needs the quality assurance of product. This study aims to determine theophylline, salbutamol sulfate and glycerylguaiacolate using ultraviolet spectrophotometry derivative. Research has been conducted in syrup was analyzed using zero crossing wavelength method. NaOH 0,1 N was selected as the solvent. Zero crossing wavelength of theophylline is 275 nm on the first derivative, salbutamol sulfate 262 nm on the second derivative and glycerylguaiacolate 243 nm on the second derivative. Results showed that the recovery of theophylline and glycerylguaiacolate are between 112,913%-118,353% and 116,129%-117,655%, respectively, while the relative standard deviation between 1,090%-1,903% for theophylline and 1,013%-1,922% for glycerylguaiacolate. Limit of detection of theophylline and glycerylguaiacolate are 1,626 ppm and 6,375 ppm, respectively while limit of quantification are 4,927 ppm and 19,319 ppm. So, it concluded that this method could be applied to determine theophylline and glycerylguaiacolate in syrup mixture.

Keywords
Theophylline, salbutamol sulfate, glycerylguaiacolate, ultraviolet spectrophotometry derivative, zero crossing.

Topic
Chemistry

Link: https://ifory.id/abstract/bt2wPWnkEL6R

Corresponding Author
Shendi Suryana

Institutions
Universitas Garut

Abstract
Rose Guava (Syzygium jambos (L.) Alston) is known to have flavonoid compounds. Where flavonoids are natural product compounds that have uses as a treatment. An alternative method used to determine the prediction of total flavonoid levels is a combination of FTIR and Chemometrics (Partial least square regression) through the parameter RMSEC value (Root mean square error of calibration), RMSECV (Root mean square error of validation), PRESS (Predicted residual error sum of squares) and R2. The results of the combination of FTIR and CEMOMETRICS (Partial least square regression) on the prediction of total flavonoid levels can provide a good model with calibration obtained R2 value 0.9999, RMSEC 0.0000637 and the results of vaid obtained PRESS value 0.19225, R2 0.978 and RMSECV 0.041 . Based on the literature, the model can be said to be good if the RMSEC and RMSECV values are smaller than R2.

Keywords
Flavonoid, Rose guava, Chemometri

Topic
Chemistry

Link: https://ifory.id/abstract/Fq98c6DQbxLv

Corresponding Author
Jajang Sugiat

Institutions
STIE Yasa Anggana Garut
Jl.Otto Iskandardinata No.278 A Garut

Abstract
Increasing Student Trust through the Service Marketing Mix Strategy with Value Services as an intervening variable (Study in Private High Schools in Garut Regency) This study aims to find out, analyze, and test the Service Marketing Mix Strategy, Service Value and Student Trust, and the Effect of Service Marketing Mix Strategy on Service Value and Effect of Service Value on Student Trust in Private Colleges in Garut Regency. The method used in this research is explanatory survey method. Data were analyzed using the Path Method analysis technique to explain the relationship and influence between manifest variables and confirmation analysis Based on the results of the study, the findings obtained include: The Marketing Mixing Strategy is in the Enough to Good category. Value of Service is in the category of Enough for Good, and Student trust is in the Enough for Good category. The Service Marketing Mix Strategy significantly affects the Value of Services and Value of Services significantly influencing Student Trust in Private Universities in Garut Regency. Keywords: Service Marketing Mix Strategy, Service Value, and Student Trust

Keywords
Service Marketing Mix Strategy, Service Value, and Student Trust

Topic
Management Science

Link: https://ifory.id/abstract/hq3YXmkNHDLb

Corresponding Author
Ade Sutedi

Institutions
Sekolah Tinggi Teknologi Garut

Abstract
Social media like Twitter used as a reference for popular and trusted news today. This condition caused users shared out the information to another about anything around them. This opportunity could be useful information about natural disasters that occur in certain condition related to their locations. This study aims to select the topic that related to the natural disasters that occur in Indonesia based on Twitter user timeline. The topic will use as a reference to ascertain events, conditions of victims and location, and positions of disaster locations. For the validity of disaster information, the data takes from the official Twitter account of @BNPB_Indonesia and @infoBMKG. The data extracted and divided into two main classes, then grouped into types of disasters and locations, and determine the position of location that can be used as a safe point after disasters. In this, study a decision tree classification was used to assist the topic selection process related to natural disaster events.

Keywords
Social Media, Natural Disaster, Decision Tree, Classification

Topic
Computer Science

Link: https://ifory.id/abstract/dNtqkXT4GnZA

Corresponding Author
Helfy Susilawati

Institutions
Electrical Engineering Departement, Universitas Garut

Abstract
Availability of a parking place in the shopping center remains a problem since the vehicle that will go into the parking area will be look for an empty parking space with no definite goal. This research intends to design information regarding the possible parking place for the vehicle when entrancing to the shopping center. By doing that, the incoming vehicle just go straight to an empty parking place. This research uses prototyping method using microcontroller as input data processor, Inductive Proximity sensor, Wifi module, and Web application. When vehicles come into the parking lot A, the sensor will provide the data on the Arduino in which the parking place A has a vehicle, and then the data will be sent to the Web application by using Module Wifi so that the web for the parking place A will get information that is already filled. There will be a description where the parking place is available on the other parking places such as the parking lots B and C. By doing this research, the parking place for the vehicle will be more well-organized and can make it easier for the vehicle that will go into the shopping center.

Keywords
Avaliable Parking, Proximity Inductive, IoT

Topic
Electrical Engineering

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

Corresponding Author
Arif Senja Fitrani

Institutions
Universitas Muhammadiyah Sidoarjo

Abstract
The concept of data mining in its implementation is used in handling and analyzing data in large capacity - steps to extract information and to gain knowledge in supporting decision making. Data mining, in its implementation, can be used in various sectors of data analysis, namely about the condition of the type of pension. The purpose of this study is to provide information, where a civil servant within the retirement limit is taken normally or earlier. The technique of using the classification method, with the decision tree C4.5 (J48), Naive Bayes and k Nearest Neighbor algorithm. Presentation of assets of 1,316 pension data in 2012 and 2013 from Bukopin Bank customers, which are divided into training data by 65% and data testing by 35%. From the testing of three algorithms, the highest classification was produced, namely Naive Bayes with 91%. The results of the three classifications indicate the quality of attribute determination can affect the results. And the predictive level of the three algorithms shows different results. For classification techniques with better results, improvements are needed to determine attributes and develop existing datasets

Keywords
Data Mining;Classification;Pension Data;Algorithm Classification;Classification;Comparative Analysis

Topic
Computer Science

Link: https://ifory.id/abstract/xCng4LkV92YX

Corresponding Author
Tri Arif Wiharso

Institutions
Electrical Engineering Departement, Universitas Garut, Jl. Raya Samarang 52A, Garut,

Abstract
When the heavy rain comes for a long time, water often overflows on a small scale drain due to the garbage that clogs the culvert on the drain. The purpose of this research is to overcome or reduce the incidence of water that overflows on the culvert so that water does not overflow. The method used in this research is prototyping method using microprocessor of Arduino Uno and load cell sensor. The results achieved in making this system has already facilitated in transporting garbage and automatically knowing full garbage so that this can reduce the amount of garbage that is located on a small scale drain and the risk of occurrence of water that overflows. This prototyping can be used for large scale in addition to the culvert.

Keywords
Small scale drain, Garbage, The overflow of water, Arduino Uno, Heavy Sensor, Motor Servo, Ultrasonic Sensor, GSM Module

Topic
Electrical Engineering

Link: https://ifory.id/abstract/yLgQx9DTGZ6M

Corresponding Author
Vera Maya Santi

Institutions
a) Department of Statistics, Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta
b) Department of Statistics, Faculty of Mathematics and Natural Science, Institut Pertanian Bogor

Abstract
Generalized Linear Models (GLM) has been used for modeling various types of data where the distribution of response variables is an exponential family. Common examples include those for binomial and Poisson response data. The GLM regression model determines the structure of the explanatory variable or covariate information, where the link function specifically determines the relationship between the regression model and the expected value of the observation. Bayesian techniques can now be applied to complex modeling problems where they could not have been applied previously. This method is a simpler model than traditional frequentist techniques. Estimating the regression model parameters is done by using Bayesian GLM. In this paper, we study conducted modeling for the number of malaria sufferers in Indonesia using the Bayesian GLM approach with several prior distributions. There are 6 independent variables that have a significant effect on the regression model, that is population density, Gini ratio, proper sanitation access, healthy zoning, integrated control and total sanitation. Based on Akaike Information Criterion (AIC) and standard error, the Bayesian GLM estimation results for Cauchy and Normal prior distribution will converge to the same value as that obtained by GLM.

Keywords
Malaria, Generalized Linear Models, Regression Parameter, AIC, Standard Error, Bayesian GLM.

Topic
Mathematics

Link: https://ifory.id/abstract/Acb3wzTdFPZ4

Corresponding Author
Erdawati Bayazid

Institutions
1Depart of Chemistry, Universitas Negeri Jakarta, Jakarta
2Depart of Chemistry, Universitas Negeri Jakarta, Jakarta
3Depart of Mechanical Engineering, Universitas Negeri Jakarta

Abstract
This study aims to test ability the catalyst tubes to reduce exhaust emissions, save fuel and increase power and torque engine on vehicle. The catalyst cube named TK plus. TKplus catalyst tube filled with NiFe2O4.. NiFe2O4. created with sol gel method and calcined on temperature 6000C, characterized by XRD, FTIR, SEM EDX, BET test. Exhaust emission test results show motor vehicles equipped with TKplus can reduce CO2 emissions; between 36%-48%, and CO2 emissions fall between 7% -42%, decrease fuel consumption by 23% - 33% . Dyno test shows that in the presence of TKplus engine performance increased compared with engine without TKplus. At the revolving round of the engine at 5781 rpm or at a speed of 120 km / h, the power value increased by 5.8% and the torque value increased by 7.8% compared to the vehicles not equipped with the TKplus value.

Keywords
Nickel ferrite, catalyst tube (TKplus), exhaust emissions and dyno test

Topic
Chemistry

Link: https://ifory.id/abstract/wFKmHp76WXnq

Corresponding Author
yati setiati

Institutions
Agrotechnology Dept, UIN Sunan Gunung Djati Bandung

Abstract
Pure breeding multiplication Shitake mushrooms generally use Potato Dekstrose Agar (PDA) media. However, the cost of basic media is relatively higher, so it needs alternative media to multiply pure broodstock for shitake mushrooms to reduce the cost of producing pure broodstock such as rice wastewater. Goal of the research was to find out ability of rice wastewater medium and determine the concentration of the best rice wastewater medium on the growth rate of shitake mushroom mycelium. The study used an experimental method consisting of 11 treatments of rice wastewater concentration 50%, 55%, 60%, 65%, 70%, 80%, 85%, 90%, 95%, 100% and Potato Dekstrose Agar (PDA) as the repeated control three replication. The results showed that influence of various concentrations of rice wastewater on the growth rate of shitake mushroom mycelium. The concentration of 100% rice wastewater produces the best growth and quality of mycelium compared to other treatments. Therefore Rice wastewater can be used as an alternative medium to multiply pure broodstock of shitake mushrooms.

Keywords
Growth rate, pure culture ,rice wastewater, Shitake mushrooms

Topic
Biology

Link: https://ifory.id/abstract/LFvGKB9HAWc4

Corresponding Author
Ni Luh Putu Eka Kartika Sari

Institutions
(a)Medical Faculty, Warmadewa University, Denpasar Bali
(b)Wangaya Hospital Denpasar, Bali
(c)Eijkman Institute for Molecular Biology, Jakarta
(d)Centre for Disease Control and Prevention, Fort Collins, Colorado

Abstract
Incidence of dengue remains high in tropical and subtropical countries which makes dengue the most common arthropod-borne disease in the region. There is limited data on dengue virus serotype in Bali. This study aimed to assess clinical and virological characteristics of dengue patients in Bali. A cross sectional prospective study was conducted from September 2015 to August 2016. Clinical manifestations were obtained and viral RNA from patient sera were serotyped using conventional RT-PCR. One way Anova was used to compare the clinical manifestation within serotype. Of the 603 patients, 177 cases were confirmed as dengue positive and could be classified into four serotypes. DENV-1, DENV-2, DENV-3, DENV-4. The common clinical manifestations documented were malaise, nausea, anorexia, cephalgia, myalgia, vomiting, athralgia, abdominal pain, retroorbita pain and bleeding. The most prevalent symtoms of cephalgia, bleeding and adominal pain were with DENV-3 infection 63 (66.3%), 11 (11.6%) and 12 (12.6%) respectively. Clinical characteristics such as blood pressure, pulse, temperature, trombocyte, leucocyte, hematocrite and hemoglobin were recorded. Temperature was significantly high in DENV-3 (p 0.030)compared to other serotypes. From all the dengue serotypes that were detected, the most prevalent was DENV-3. There is no significant differences in the clinical manifestations among all serotypes except for high temperature in DENV-3 infection.

Keywords
dengue, serotype, clinical manifestation, Bali

Topic
Biology

Link: https://ifory.id/abstract/2wAmrZk8u7bR