Indonesia Conference Directory

Corresponding Author
Siti Zubaidah

Institutions
(a) Biology Education, STKIP Persada Khatulistiwa Sintang. Jl. Pertamina Km 4 Sengkuang Sintang, West Kalimantan, Indonesia
(b) Biology Education, Universitas Negeri Malang. Jl. Semarang No. 5 Malang, East Java, Indonesia

Abstract
The use of plant roots as traditional medicine for Dayak Desa tribe is carried out from generation to generation but has not been recorded properly. This study aims to identify the types of plants used, parts of plants used, and the way they are processed by Dayak Desa tribe, from Kayan Hilir District, Sintang Regency, Indonesia. The survey research was conducted in March 2018 by seeking information from the community through interview and field observation. Information was obtained through semi-structured interviews with 100 informants regarding the types of plants used, the local names, the parts used, and the way to process them. Data analysis was done by compiling and classifying medicinal plants based on its family, its benefits, and its way of using. Then the data were calculated in the form of a percentage of families and the percentage of the way to use them. The results showed that twenty-five medicinal plants were used in twenty-two families. The family that was widely used were families of Araceae, Fabaceae, and Poaceae with a percentage of 8% each. The part of the plant used by Dayak Desatribe was the root that was used by way of boiling and drinking with a percentage of 60%.

Keywords
plant roots, traditional medicine, Dayak Desa

Topic
Botany

Link: https://ifory.id/abstract/xGXjc9yFNrJA

Corresponding Author
Fathur Zaini Rachman

Institutions
a) Electrical Engineering Department, State Polytechnic of Balikpapan
Jl. Soekarno Hatta km.8, Balikpapan 76126, Indonesia
*fathur.zaini[at]poltekba.ac.id
b) Electrical Engineering Department, Electronic Engineering Polytechnic Institute of Surabaya
Jl. Raya ITS, Surabaya 60111, Indonesia

Abstract
The purpose of this study is to build an early fire detection system that is able to detect the conditions of the environment and the results are informed quickly on the incident area and fire department. The research method used was experimental using Arduino Uno, GPS Ublox Neo 6MV2, SIM900A and three sensors such as fire sensors, smoke sensors and temperature sensors. All sensors function as a fire indication detection system. The results of the system test obtained an average GPS error of 1.6% with an accuracy of reading shifts and the average distance obtained was ± 4 meters. The average data transmission speed between Providers is 1 second because the processing time and sending speed are in line with the network conditions and the capabilities of the GSM module used. The conclusion of the system is that it can be used normally with the LCD module display, mobile applications and information on the fire department.

Keywords
Fire Detection;GPS;Arduino Uno;GSM

Topic
Electronics and Microelectronics Engineering

Link: https://ifory.id/abstract/uWBX2dxLvbnC

Corresponding Author
Rabiya .

Institutions
1) School of Civil Engineering, The State Polytechnic of Bandung
Gegerkalong Hilir Street, Bandung 40012, Indonesia
yuswandono[at]gmail.com
2) School of Civil Engineering, The State Polytechnic of Bandung
Gegerkalong Hilir Street, Bandung 40012, Indonesia
suyonoagus[at]yahoo.com
3) Master of Applied Science in Faculty of Civil Engineering, The State Polytechnic of Bandung
Gegerkalong Hilir Street, Bandung 40012, Indonesia
rabiya86[at]yahoo.co.id

Abstract
Peat soil is a soil that has strong low shear, high water content, large traction, and low carrying capacity. Many constructions are built on peat soil that has problems that are a big decline over a long time. To find out whats happening, go through consolidation testing. Testing of peat soil consolidation using Rowe Cell. The advantages of this Rowe cell can know the saturation value of the sample soil tested. Besides, it can measure the water pressure of pores at the beginning and end of each phase of consolidation. The research was used in peat soil in Rawa Pening, Semarang. Because of the construction of many buildings built in the area. From the results of the research obtained the value of soil ability (Cc) and the coefficient of speed consolidation (Cv). For the Cc value of peat soil is an average of 0,50 and Cv value of 167,99 cm2 per minute. As for the average cavity of soil pore (e) amounted to 14,81. The value of 14,81 is know the size of the soil cavity and density. This is all to know the parameters and factors that occur at the time of consolidation.

Keywords
Peat Soil; Rowe Cell; Large Decline; Consolidation of Peat Soil

Topic
Civil Engineering

Link: https://ifory.id/abstract/AGy3XcvHCDQL

Corresponding Author
AGUSTINA SLOW DAKIA MANURUNG

Institutions
1)Civil Engineering Department, Politeknik Negeri Bandung, Bandung, Indonesia
husnulmarza[at]yahoo.com
2)Civil Engineering Department, Politeknik Negeri Bandung, Bandung, Indonesia
3)Post-Graduate Student of Infrastructure Engineering Study Program, Applied Master Program, Politeknik Negeri Bandung, Bandung, Indonesia
manurungagustina99[at]yahoo.com

Abstract
Optimizing bottled plastic waste of Polyethylene Terephthalate (PET) as added material into asphalt and testing of modified plastic waste bottles for further use as an asphalt mixture. Besides, the Indonesian state is ranked second in the world for producing plastic waste into the sea so that the utilization of waste must be done while reducing the increasing amount of waste. Also, the addition of plastic bottle waste to obtain the durability of the pavement structure in a strong case prevents deformation in the traffic load. This study uses the wet process method as an added material into the asphalt. This research was carried out on a mixture of Asphalt Concrete Wearing Course using a 60/70 pen asphalt modified with PET type plastic waste with levels of 0%, 3%, 6%, 9%, and 12%. The purpose of this study was also to determine the Marshall parameters of the characteristics of asphalt concrete with different modified PET asphalt variations. After analysis, the optimum level of optimum use of concrete asphalt mixture is 9% PET with an increase in 33% stability of Marshall value between the use of optimum modified asphalt with 60/70 pen bitumen used. Marshall stability value is resistance to deformation of the pavement structure.

Keywords
Plastic bottle waste, Polyethylene Terephthalate (PET), modified bitumen, AC-WC characteristics

Topic
Civil Engineering

Link: https://ifory.id/abstract/YvDRy2LbzPda

Corresponding Author
AGUSTINA SLOW DAKIA MANURUNG

Institutions
1) Post-Graduate Student of Infrastructure Engineering Study Program, Applied Master Program, Politeknik Negeri Bandung, Indonesia
2) Civil Engineering Departement, Politeknik Negeri Bandung, Indonesia

Abstract
The performance of the modified asphalt concrete pavement structure is done because of the increasing traffic load that occurs along with population growth. The study is needed to review the pavement structure whether it is still able to withstand the load or not at all. An Evaluation was carried out using Falling Weight Deflectometer (FWD) field data to obtain deflection data. Laboratory testing of UMATTA used modified asphalt mixture using Polyethylene Terephthalate (PET) type plastic bottle waste to obtain the relative strength coefficient value as an application combined with secondary data from average daily traffic data on the roads of the Batas Medan City– Batas Lubuk Pakam City. Structural analysis shows that the entire segment requires an added layer with the thickness that is different due to the segmentation performed. This study to maintain the required service level, namely SCI>1, the pavement must receive periodic maintenance and routine maintenance. elated to using asphalt modification using PET will produce a lower pavement thickness of 11 cm compared to the pavement thickness by the 2017 Pavement Design Manual standard of 16 cm.

Keywords
Maintenance, Falling Weight Deflectometer, Polyethylene Terephthalate, Asphalt concrete

Topic
Civil Engineering

Link: https://ifory.id/abstract/rmA7G4hYvE6R

Corresponding Author
Rabiya .

Institutions
1) Master of Applied Science in Faculty of Civil Engineering, The State Polytechnic of Bandung
Gegerkalong Hilir Street, Bandung 40012, Indonesia
rabiya86[at]yahoo.co.id
2) School of Civil Engineering, The State Polytechnic of Bandung
Gegerkalong Hilir Street, Bandung 40012, Indonesia
3) School of Civil Engineering, The State Polytechnic of Bandung
Gegerkalong Hilir Street, Bandung 40012, Indonesia

Abstract
Problems arise when building infrastructure on peat soil, such as on a declining bridge. To know this, an experimental test was conducted. From experimental testing, the PT-00 model had the biggest drop at 87,16 mm, for the PT-25V model was 65,30 mm and the PT-KKK-25V model amounted to 67,23 mm. For the model of PT-00 experienced a faster decline and small load is 37 kg, model PT-25V can withstand the load up to 49 kg, while for the model PT-KK-25V, the pile foundation can afford the load up to 204 kg. The peat soil with pile foundation undergoes the fastest depreciation of 52,25 mm on the PT-KKK-25V model. For PT-00 and PT-25V models subjected to a smaller depreciation process of 38,8 mm and 28,78 mm The results of this analysis can be concluded that for the test pile foundation press, the application of improvement is more effective on the model PT-KKK-25V, namely pile foundation model is mixed 8% optimum contain of lime shells and electrokinetic with a voltage of 25 V. But for pile foundation tensile testing, the application of modeling is more effective on the PT-25V model. Because electrokinetic can enlarge the tensile force of the pile foundation.

Keywords
Peat Soil, Lime Shells, Electrokinetic Method, Pile Foundation, Settlement of Soil

Topic
Civil Engineering

Link: https://ifory.id/abstract/fkFvKBZbT29a

Corresponding Author
Khairunnisa Khairunnisa Khairunnisa

Institutions
Politeknik Negeri Banjarmasin

Abstract
Digital electronic devices have specifications using IC as the main component where the signal processing on the circuit board was processed digitally. Signal analog process signals with digital devices through the ADC / DAC (Analog-to-Digital Converter / Digital-to-Analog Converter) procedure. In the ADC mechanism, analog signals through sampling, quantization and coding processes, so its become digital signals in the form of binary code. Then the binary code is input into the DAC. Many techniques and methods can be used by DAC to process digital signals to recover the desired analog signal, one of which is the interpolation technique. In this study, two interpolation methods will be analyzed to determine the performance of the audio signal performance on the DAC mechanism, namely Newton Interpolation and Lagrange Interpolation. Performance of each method is expressed as signal-to-noise ratio (SNR). The research methods that will be carried out include making software, reading audio sound data, process and signal analysis through ADC / DAC procedures, signal processing and analysis with interpolation techniques, and calculating SNR output signals. The results of the analysis are graphical and SNR values. Next, SNR is compared between Newton Interpolation and Lagrange Interpolation techniques.

Keywords
performance, DAC, interpolation, audio signal

Topic
Electronics and Microelectronics Engineering

Link: https://ifory.id/abstract/VnxMgw9ZXGHd

Corresponding Author
ridho hendra yoga perdana

Institutions
State Polytechnic of Malang

Abstract
Along with increasing years, meeting food needs in Indonesia continues to experience improvements. This is because it is not balanced between the rate of population growth and the amount of food production. In order to help increase food production and improve the quality of food, modern technology in agriculture is needed, one of which is a greenhouse. Most greenhouses still use manual watering systems that have not been supported by technology that utilizes an automatic watering system and is accompanied by a monitoring system, temperature and humidity control and greenhouse soil moisture using wireless sensor network communications. By spreading 6 nodes at each point and each node equipped with 3 sensors, it is expected that the greenhouse monitoring and control process will be more thorough. The results of testing the temperature of the greenhouse increased by 23%. This also applies to the value of air humidity experiencing an increase of 4% and soil moisture of 1.20%.

Keywords
observation, greenhouse, wireless sensor networks

Topic
Telecommunication Engineering

Link: https://ifory.id/abstract/jmnrTHP9QUd8

Corresponding Author
Deina Amanda Amivisca

Institutions
Department of Electrical Engineering, Universitas Negeri Malang.
Jalan Semarang No. 5, Malang, Indonesia.
a) adeliarohma[at]gmail.com
b) deinaamivisca[at]gmail.com
c) heru_wh[at]um.ac.id
d) utomo.pujianto.ft[at]um.ac.id

Abstract
Attitudes assessment is one of the aspects of the assessment in Curriculum of 2013 or the K13. In order to assess the students attitudes in Curriculum 2013, a set of new rules has been implemented by Vice Principal for student affairs of SMK Negeri 2 Singosari in academic year 2017/2018. This is applied by having the students achievement books called Buku Prestasi Peserta Didik to monitor both their academic and non-academic activities. It is in the form of the students printed handbook. Both filling in the books and calculating the points that the students obtain are still done manually. Consequently, this manual process takes long time and arises some problems. Therefore, a solution to overcome these problems is needed. A possible solution to entering data accomplishments or violations committed by the students, monitoring the students attitudes both inside and outside their classrooms and calculating the results of end points they earn that will become the basis of the ranking points of their attitudes. This research aims at developing an Application for Monitoring and Assessing The Students Attitudes. The application was developed using a Waterfall Model consisting of four steps: (1) Analyze, (2) Design, (3) Code, and (4) Test. The application also implements the algorithms Simple Additive Weighting (SAW) for the process of ranking points the students attitudes of one class. In addition to developing products, product feasibility testing process was conducted to find out the level of validity and feasibility of the product to be applied in SMK Negeri 2 Singosari. Testing conducted by expert information systems and was based on the results from testing the functionality of the information system that obtained an average percentage of trial results functionality of 100%. Then testing was conducted by users at every level of user. Based on the results of the testing by users, it obtained an average percentage of trial results functionality of 99.88% and the average percentage of the results of the usability of 92.21%. Thus, this implies that this application was rated as excellent that can be used in SMK Negeri 2 Singosari as application for monitoring and assessing the students attitudes.

Keywords
Application for Monitoring and Assessing The Students Attitudes; Ranking Points; Simple Additive Weighting; Waterfall

Topic
Information Systems Technology

Link: https://ifory.id/abstract/AYwyun4mpkr3

Corresponding Author
Lucky Nindya Palupi

Institutions
a) Department of Electrical Engineering, State Polytechnic of Malang Soekarno Hatta St. 9 Malang, Indonesia
*lucky.nindya.palupi[at]gmail.com
b) Department of Electrical Engineering, Brawijaya University, MT Haryono St. 167 Malang, Indonesia

Abstract
The development of DC microgrid is increasingly being carried out recently aimed to reduce or even replace energy produced from fossil energy. Many kind of energy sources are used in microgrid systems, but the most commonly used is photovoltaic (PV) to convert sunlight into electricity. PV systems have limitations in their usage time, besides that PV systems also utilize the maximum power point tracking (MPPT) algorithm to maximize power from PV. The use of MPPT in PV systems has a positive impact that can improve power efficiency in partially shaded conditions. MPPT are able to cause unstable voltage problems and exceed the input voltage of the system. In this paper, the performance of adaptive control will be explained using a model reference adaptive controller (MRAC) approach, the control mechanism where the system parameters change dynamically. The reference model is obtained from optimization using MIT rules. Adaptive control will be applied to the buck converter and MPPT controls using the firefly algorithm to be applied to the SEPIC converter. In this study the simulation was carried out and showed Integral of the absolute value of the error (IAE) and integral of the square value of the error (ISE) of the proposed method was smaller than the PID controller. Therefore, the proposed method is able to track the reference voltage smoothly, and have robustness to variations in the parameter interference.

Keywords
Photovoltaic (PV); Buck converter; Firefly Algorithm-MPPT; SEPIC Converter

Topic
Electrical Power Systems Engineering

Link: https://ifory.id/abstract/AG6TMZCFXhnm

Corresponding Author
sugeng hadi susilo

Institutions
1Mechanical Engineering Department Politechnic State of Malang
2Electrical Engineering Department Politechnic State of Malang

Abstract
The increasing energy demand is in line with population growth as well as the development of science and technology, and the maximum utilization of energy derived from magnets. The purpose of this research is to design of permanent magnet motor that produces rotation that can be utilized as power plant propulsion, without using fuel oil. The method used is to examine and search the gap of existing patent design and develop it in the form of new design, In the hope of increasing the potential of magnetic energy into a magnetic power plant. By designing the magnetic position and angle of attack on the rotor and stator motor magnet.

Keywords
Magnet motor, prototype, magnetic energy.

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/nF43xvupAwBX

Corresponding Author
Vivin Ayu Lestari

Institutions
Department of Information Technology, Politeknik Negeri Malang.
*vivinlestari91[at]gmail.com

Abstract
The Indonesian government has serious attention to facilitate the health of its people, one of which is by establishing Badan Penyelenggara Jaminan Sosial (BPJS) hereinafter BPJS. The Government of Indonesia collaborates with several parties including primary health facilities, General and Regional Hospitals, as well as general practitioners and specialists who have been appointed by BPJS. The aim of this study is the user-s perception of Primary Care applications at primary health facilities BPJS in Malang. This study uses the Update D & M IS Success Model to assess the success of an information system where its use is mandatory at primary health facilities. The model contains 6 dimensions that can measure the success of a system are Information Quality, System Quality, Service Quality, Use, User Satisfaction and Net Benefits. This research is a quantitative study using a questionnaire with a Likert scale. The sampling method was carried out using purposive sampling in determining respondents is doctors or admins who operated directly on primary care applications at primary health facilities. The results of this study indicate that primary care applications can be categorized as successful information systems for each dimension of success in the Upadate D & M IS Success Model.

Keywords
Information Quality; Intention to Use; System Quality; Service Quality, User Satisfaction

Topic
Information Systems Technology

Link: https://ifory.id/abstract/tV6CPc9jU2Td

Corresponding Author
Lentien Febrianty Ludhyrani

Institutions
a) Department of Civil Engineering Bandung State Polytechnic, Indonesia
Jalan Gegerkalong Hilir, Bandung 40012, Indonesia
lentienfebrianty[at]gmail.com
b) Department of Civil Engineering Bandung State Polytechnic, Indonesia
Jalan Gegerkalong Hilir, Bandung 40012, Indonesia
sxs142[at]yahoo.co.uk
c) Department of Civil Engineering Bandung State Polytechnic, Indonesia
Jalan Gegerkalong Hilir, Bandung 40012, Indonesia
retnoutami[at]polban.ac.id

Abstract
Flexible pavement structural evaluation using AASHTO 1993 method carried out based on deflection values from the survey using the Falling Weight Deflectometer (FWD) which will be used to calculate the Effective Structural Number (SNeff), Structural Number in Future (SNf) and overlay thickness. Flexible pavement is susceptible to rutting damage and permanent deformation. To increase rutting damage and permanent deformation resistance, Asphalt Concrete Wearing Course (ACWC) was being modified by adding SIR 20 material. In determining overlay thickness using AASHTO 1993 method, one of the factors influencing the thickness was properties of ACWC material. In this paper, a case study is carried out on the Raya Dawuan – Cikampek Road. The result of this case study were ACWC-Modified overlay thickness was thinner than ACWC-Normal. ACWC Modified pavement overlay structure thickness obtained at 80 mm meanwhile in ACWC-Normal was 100 mm.

Keywords
Flexible Pavement, SIR 20, Overlay Thickness.

Topic
Civil Engineering

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

Corresponding Author
Mira Esculenta Martawati

Institutions
POLINEMA

Abstract
In 2017, the Central Bureau of Statistics recorded cases of theft of motorized vehicles and embezzled cars from rental services totaling 35,226 cases. The purpose of this research is to develop and make vehicle safety modules from previous research. This tool can turn on and l off ignition remotely where the coil will be connected to a relay that will be controlled by a microcontroller. The microcontroller will be connected to the internet network and can be controlled through the website interface. This tool can also determine each position of the vehicle quickly and continuously or realtime. the workings of this tool information on the position of the vehicle originating from the NEO 6M GPS sensor will be sent by the microcontroller to the internet database, from the database can be seen through internet addresses available using a web browser and also an android application integrated with the system so that vehicle owners can immediately turn off ignition. This research is to find out the performance of a device with 4G LTE internet network for XL, Telkomsel, Smartfren and Indosat provider in Indonesia and find out the response speed of the device when there is theft or embezzlement.

Keywords
vehicle safety, internet of things, Arduino ESP 8266, Mobile Wi-Fi

Topic
Information Systems Technology

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

Corresponding Author
Joosten Joosten

Institutions
Gajah Mada University

Abstract
The testing phase is always one of the important stages in developing a software. Without this stage, software errors will be difficult to find at the beginning of the software development. This study uses a decision table method that aims to shorten the rule of software testing. The advantage of this method is that it can help make fewer rule combinations for testing. This study uses a medical information system as a case study. In the medical information system, 20 test cases were identified early in the software testing process. Of the 20 test cases, there are 7 test cases that have the same characteristics so that they can be combined into only 13 test cases. Therefore, it can be concluded that the decision table method can reduce software testing time.

Keywords
software testing, rule, decision table

Topic
Information Systems Technology

Link: https://ifory.id/abstract/wfNa7FbPyZGr

Corresponding Author
Sri Rulianah

Institutions
Chemical Engineering Department, State Polytechnic of Malang, Malang, Indonesia

Abstract
Lignocellulose is an abundant organic component consists of three polymers namely cellulose, hemicellulose and lignin which it is the main sources of plant biomass. The lignin, cellulose and hemicellulose can degraded using Phanerochaete chrysosporium. The aim of this research was to determine the effect of fermentation time and bagasse addition to reduce the levels of lignin, cellulose and hemicellulose in fermentation process using Phanerochaete chrysosporium. This research was conducted by fermentation of bagasse which has been dried and reduced in size in the form of powder (30-60 mesh) using NLM (Nitrogen Limited Media). Changing variables in this study were fermentation time (17, 20, 23, 26, and 29 days), and concentration of bagasse addition (3,4 and 5%) from NLM. The product fermentation was filtered using a vacuum pump, the pulp was analyzed for levels of lignin, cellulose and hemicellulose by the Van Soest method. The results of the research showed that the longer fermentation time causing higher reduction levels of lignin, cellulose, and hemicellulose. In the best operating conditions, the fermentation time was 29 days, and the bagasse addition of 3% obtained the largest decrease in lignin by 93,273%, cellulose 68.0366%, and hemicellulose 54.495%.

Keywords
bagasse, cellulose, hemicellulose, lignin, Phanerochaete chrysosporium

Topic
Chemical Engineering

Link: https://ifory.id/abstract/yExvbgWHctD7

Corresponding Author
Dimas Rossiawan Hendra Putra

Institutions
Politeknik Negeri Malang

Abstract
Human face recognition is one of the challenging topics in the areas of pattern recognition, image processing and computer vision. Before recognizing the human face, its necessary to detect a face then extract the face features.Extraction of facial features using geometric distance on facial features such as eyebrows, eyes, nose and mouth compared with extraction based of skin color on human faces and using Naïve Bayes Classifier as its classification method. This paper presents a comparison of the two methods in terms feature extraction with geometry and skin color for getting accuracy.

Keywords
Face Recognition, Geometric Feature, Color feature, Naïve Bayes Classifier

Topic
Computer Science and Engineering

Link: https://ifory.id/abstract/4PVgZRG9MjpH

Corresponding Author
MUHAMMAD BISRI MUSTHAFA

Institutions
State Polytechnic of Malang

Abstract
BAN-PT is an Indonesian body with the main task to assess the quality of Indonesian university. The assessment result is called accreditation, which has 5 years of validation time. In order to monitor the quality, University has an internal mechanism which is called an internal quality assurance system (SPMI in Indonesian). Usually, SPMI assesses the quality periodically, one or two times each year. This process needs much effort, i.e. time, manpower, and financial cost. Sometimes, internal auditor of the university does not have sufficient knowledge, as much as BAN-PT accessor. This condition causes a lack of assessment accuracy, then causes the quality of SPMI itself. In the other hand, University has abundant of condition data, saved in PDDIKTI database. This paper proposes to exploit the availability of data in this case. Therefore university able to monitor the quality by machine learning process periodically without much effort as manual SPMI process. Furthermore, this paper evaluates two machine learning methods, i.e. naive Bayes and KNN. This proposal exploits several data: student, academic, admission, and alumna. KNN and naive Bayes work in registrant and capacity ratio, student registration ratio, average student GPA in late five years, and on-time graduation scale. The experiment results show the accuracy of naive Bayes and KNN are 78.57% and 57.14% respectively.

Keywords
SPMI; PDDIKTI; KNN; naive Bayes

Topic
Computer Science and Engineering

Link: https://ifory.id/abstract/F3vRKmZbt4aX

Corresponding Author
Vivi Nur Wijayaningrum

Institutions
Department of Information Technology, Politeknik Negeri Malang
*vivinurw[at]gmail.com

Abstract
Teaching and learning activities in the classroom require data collection on student attendance. The process of data collection on student attendance during lecture hours at the Information Technology Department, Politeknik Negeri Malang, is the responsibility of the lecturer. The lecturer calls and records students one by one to be written in an attendance form, then the form will be recapitulated to the system by administrative staff. This causes frequent errors in the recapitulation of student attendance. Errors in the recapitulation of data and a large number of attendance data that must be recapitulated will certainly make the process ineffective and inefficient. This study uses a smart card to facilitate the process of identifying students during teaching and learning activities in the classroom. Students use smart cards to record their attendance before and after lecture hours. The smart card will be connected to the card reader using NFC which is also connected to a PC using a USB port. The data used includes lecture schedules, courses, classes, lecturers, and students that are stored in the database. The result of a smart monitoring system is the ability to manage data on the system, as well as recording attendance data.

Keywords
authentication, smart card, student attendance

Topic
Computer Science and Engineering

Link: https://ifory.id/abstract/eKt9MPudxNpT

Corresponding Author
Galih Agung Purwono

Institutions
(a) Student, Magister Terapan Rekayasa Infrastruktur, Politeknik Negeri Bandung. Jl.Gegerkalong Hilir Bandung
(b) Lecturer, Magister Terapan Rekayasa Infrastruktur, Politeknik Negeri Bandung. Jl.Gegerkalong Hilir Bandung
(c) Lecturer, Magister Terapan Rekayasa Infrastruktur, Politeknik Negeri Bandung. Jl.Gegerkalong Hilir Bandung

Abstract
Ashpalt Concrete is a layer on a pavement structure consisting of hard asphalt mixture and aggregate, mixed anda spread in hot conditions and compressed at a certain temperature. Asphalt concrete as a wear layer, known as the Asphalt Concrete-Wearing Course (AC-WC) with a minimum nominal thickness of 4.0 cm. However, the use of AC-WC layers in the pavement structure is often faced with problems of performance degradation due to the development of various types of damage during the service life one of them is a result of the effect of water. In general, water has a negative effect on road pavement construction. Standing water can be caused by high rainfall, poor drainage systems, high groundwater levels, and water runoff. The method used in this research is laboratory-scale experimental methods. Tests carried out in this research encompasses testing the characteristics of materials and testing the characteristics of three types of water. Furthermore, Marshall testing of asphalt mixture that was immersed in three types of water. The Asphalt Level of Oil used is a variation of 4%, 4.5%,5%, 5.5% ,6% ,6.5 %,7%. The OBC value is determined by using the Arrow Range method of the existing Marshall parameter, obtained by the OBC value of 6.15%. This research aims to look at the performance of the physical and mechanical properties of testing Marshall characteristics on a mixture of asphalt pen 60/70 wear layer (AC-WC) on the duration of water immersion from three different types of water. The specimen was carried out immersion testing from three types of water, namely clean water, brown flood water and black air with 30 minute immersion standards with variations of 1 day, 7 days, 14 days, 21 days and 30 days. The results of the study of the typical properties of the AC-WC layer questioned a decrease in density from the initial conditions to the 30 day of immersion. The results obtained were 0.64% for clean immersion water, 0.61% for brown flood water and 0.70% for black flood water. Whereas for VIM values on each specimen for clean air immersion is 43.24%, brown flood water is 45.04% and black water is 44.11%. From the immersion duration, the VIM value on immersion of the clean water still met the criteria, whereas for brown and black flood water at the immersion 7 days to 30 days it did not meet the required criteria. For VFB values, the duration of immersion for 1 month flooded brown water and black flood water below the value of 65%. For VMA values all of specimens and immersion duration still meet standard the value spesification 15% . For the mechanical stability properties of Marshall the AC-WC layer of all specimens still meet the criteria, but the greatest decrease in value occurs in the black flood water immersion specimens of 32.1% in the 30-day immersion from the initial conditions. For the viscous properties shown on the value of flow obtained. The value of flow on immersion 1 day to 30 days did not entered the required criteria. Whereas

Keywords
AC-WC, Immersion, Marshall, flow, Marshall Quontent, Flood Water

Topic
Civil Engineering

Link: https://ifory.id/abstract/EbPWyMFB6NhJ

Corresponding Author
Mustika Mentari

Institutions
a,b,c) Departement of Information Technology, Politeknik Negeri Malang
*must.mentari[at]polinema.ac.id

Abstract
Each year the study program carries out activities that have been planned through departmental meetings. However, study program activities that are not on target will result in less accreditation scores. Accreditation is a government effort to guarantee the quality of educational institutions. The value of accreditation determines the main assets in the field of education, the quality of study programs and the feasibility of graduates. Therefore, this study tries to provide a ranking formula for study program activities based on the assessment of study program accreditation forms. The system is built using one of type multi-criteria decision making (MCDM), namely the Preference Selection Index (PSI). PSI method using statistical concepts until preference index as a reference for alternative ranking This developed system can help the department to recommend the main activities that can be done to support the efforts of the study program in achieving optimal accreditation values. Finally, it was concluded that the PSI method is the right method for problems that require decision support with a large number of attributes, such as the criteria used in recommendations for study program activities that have been adapted to the study program accreditation form assessment matrix.

Keywords
Study Program Activities, Study Program Accreditation, ,Ranking, Preference Selection Index, MCDM

Topic
Information Systems Technology

Link: https://ifory.id/abstract/GP3RYQnJFy4c

Corresponding Author
Hendra Pradibta

Institutions
1,2 Jurusan Teknologi Informasi/ Information Technology Department
Politeknik Negeri Malang /State Polytechnic of Malang

Abstract
At present, the learning model with practicum learning methods in the laboratory is considered an effective learning model. However, from these advantages, there are weaknesses. One of the weaknesses of practicum learning methods is the high cost of learning because it requires much equipment. Digital Learning is an educational concept that utilizes information technology in the teaching and learning process. The concept of learning in digital multimedia is by utilizing virtual reality technology. The concept of virtual reality that simulates the real world into the digital world can be used as a solution to overcome the weakness of existing learning method. This study provides the development of virtual reality for practicum learning in the laboratory. The knowledge base applied came from scientific experts and used as a rule in learning. The purpose of developing this application is as a prototyping framework of virtual learning that can be applied to laboratory practicum learning.

Keywords
Practicum Learning, Laboratory, Virtual Reality, Knowledge Base, Artificial Intelligence

Topic
Information Systems Technology

Link: https://ifory.id/abstract/jfG92unJcdNF

Corresponding Author
Yanty Noorzianna Manaf

Institutions
1Halal Products Research Institute, Universiti Putra Malaysia, Malaysia
2Consortium of Malaysian Halal Institutes, Ministry of Higher Education, Block E8, Complex E, Federal Government Administrative Centre, 62604 Putrajaya, Malaysia
3Faculty of Agricultural Technology, Gadjah Mada University, Yogyakarta, Indonesia
Email: yanty[at]upm.edu.my; yus.aniza[at]upm.edu.my; hafisyuswan[at]upm.edu.my; husna.noona97[at]gmail.com; 192388[at]student.upm.edu.my; eliyza_91[at]yahoo.com; bpnusantoro[at]ugm.ac.id
*For correspondence; E-mail: yanty[at]upm.edu.my; bpnusantoro[at]ugm.ac.id

Abstract
The demand and availability of halal products is expected to rise due to increasing growth rate of the Muslim population in the world. However, several major issues on the complexity in the global halal chain especially for halal food. This prompted the government to develop strategies to protect the integrity of halal products. Besides logo, certification and enforcement, halal laboratory testing is also important to ensure halal products integrity especially food products (from farm to table). Therefore, highly competent halal laboratories could be one of the important agenda for verification of halal products. This article describes and discusses the role of halal laboratory and several techniques to detect non-halal substances in products.

Keywords
Halal; Products; Food; Laboratory; Testing

Topic
Halal Food, Pharmaceutical, and Cosmetics Manufacturing

Link: https://ifory.id/abstract/d2fcxCk8Xte9

Corresponding Author
Zuhdi Ma-sum

Institutions
Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Sepuluh Nopember

Abstract
Lemongrass (Cymbopogon nardus), a traditional medicinal plant in Indonesia, has been considered to have a therapeutic effect and is widely used in the perfume and pharmacological industries. Considering the ability of Lemongrass Oils, this study was conducted to optimize the microwave-assisted hydrodistillation method (MAHD) for Cymbopogon nardus leaf samples to improve the yield and analysis of components of essential oils. Result optimization is done through Box-Behnken Design (BBD) from the surface response methodology (RSM) using three variable factors (extraction time, irradiation power, mass sample, and sample size). Based on RSM results, the maximum essential oil yield is obtained by 800 W microwave power, mass sample 20 g, sample size 1.5 cm at 90 minutes. The results showed that MAHD from 20 g Lemongrass, produced the highest volatile oil yield (2.26%) compared to 40 g mass essential oil (1.94%). Essential oils extracted by MAHD were analyzed by mass gas-spectroscopy (GC-MS) chromatography and showed the main constituents of them were Geranial, Z-Citral, beta-Myrcene, and Eugenol. This study reveals that MAHD can be an effective method for hydrodistillation of essential oils in Cymbopogon nardus in terms of shortening the time of hydrodistillation, reducing the optimum energy consumption and process.

Keywords
Microwave extraction; Cymbopogon nardus; Respon Surface; Optimization.

Topic
Chemical Engineering

Link: https://ifory.id/abstract/q2bfcxrApkDX

Corresponding Author
Wisnu Agung Prasetyo

Institutions
State University of Malang

Abstract
Students academic abilities differ from one another. There are students who have high academic abilities, so they can take good lectures. However, it is not uncommon to find students with low academic abilities, thus making it difficult for them to take lectures. Furthermore, among students with both categories there are students with average or normal academic ability level. Students with low academic ability level will leave them in college. If this condition continues, it will make them difficult to pass or complete in every course they take. The worst possibility is it will be very difficult for students to finish their education (graduation) and even drop out in the middle of the study. This is where the special handling of the instructor is really needed for them. In this study a comparison is made between two classification methods, namely Decision Tree J48 and k-Nearest Neighbour (KNN). The classification process is done by the Rapid Miner application. The results obtained are the Decision Tree J48 method is better than the KNN. One of the reason is that Decision Tree J48 does better classification on handling large and nominal dataset.

Keywords
Classification, KNN, J48, Decision Tree, Student

Topic
Computer Science and Engineering

Link: https://ifory.id/abstract/gjVqzAEeT6hD

Corresponding Author
Dimas Rossiawan Hendra Putra

Institutions
Polinema

Abstract
Human face recognition is one of the most challenging topics in the areas of pattern recognition, image processing and computer vision. Before recognizing the human face, it is necessary to detect a face then extract the face features. Many methods have been created and developed in order to perform face detection and two of the most popular methods are Haar Cascade Classifiers and Histogram of Oriented Gradients (HOG), which have a very low rate of false negative. This paper presents a comparison of the two methods in terms of precision, recall, f-1 score and accuracy using confusion matrix

Keywords
Human Face Detection, Haar Cascade Classifier, Histogram of Oriented Gradients (HOG), confusion matrix, accuracy

Topic
Computer Science and Engineering

Link: https://ifory.id/abstract/e4dqGA7fywZ2

Corresponding Author
Padma Adriana Sari

Institutions
Politeknik Negeri Malang
Jl. Soekarno Hatta No. 9 Malang
*padma.adriana.sari[at]gmail.com

Abstract
The industrial revolution 4.0 which is marked by the optimization use of information technology with real-time data and intelligence had transformed the way business organizations worked. Accounting educators needs to adapt with this situation by preparing students to have the ability to use information technology and be able to give insights from data, increase their expertise, be open-minded in facing the changes and being able to maintain good values and ethics as well. This paper examines the perception of Indonesian educators about the importance of accounting ethics education within the industry 4.0 era. This study portray the method used to teach ethics in accounting courses, also the problems and factors that encourage the educators in this education process. The findings revealed that educators believe ethics must be increased in the industry 4.0 due to the risk of fraud that is anticipated to occur in the business world where technology and innovation involved. The educators anticipated the possibility by inserting the topic of ethics in the process of teaching accounting subjects and discussing current ethical issues in accounting. Achieving the learning objective formulated in the curriculum, fulfilling their responsibility to give further understanding of accounting, are the factors that encourage educators in teaching ethics. Whereas time constraints and lack of reference are the factors that the educators might be struggling to overcome.

Keywords
Accounting; Industrial Revolution 4.0; Ethics; Educator; Teaching

Topic
Accounting

Link: https://ifory.id/abstract/A4fhP8WeZ3BF

Corresponding Author
Muchlis Fajar Hidayat

Institutions
Universitas Negeri Malang

Abstract
Last few years magnetic hydrogel called ferrogel was widely investigated for application in important fields such as in food industry and bio medic. This application is based on good properties which are owned by the ferrogel, for instance, good biocompatibility of the components and stimuli-responsive of the magnetic component. Ferrogel composed by magnetic nanoparticles filler inside the polymer hydrogel. This research focused on Polyvinyl Pyrrolidone/Polyvinyl Alcohol (PVP/PVA) hydrogel polymer with the filler of polyethylene glycol (PEG) MnxFe3-xO4-PEG which is rarely reported. The XRD and SAXS characterizations were used to analyzed the nanostructure of sample. The Mn concentration used was x = 0.6 which has particle size about 11.12 nm analyzed using XRD and has well confirmed with TEM result about 9.9 nm. Analysis using SAXS from ferrogel with filler variations yields primary and secondary particle size about 3.3 and 9.8 nm respectively. The optical properties of MnxFe3-xO4-PEG powder sample characterized using UV-Vis which is shown with the energy gap about 2.24 eV and refractive index 2.79. Using these data, the optical and electrical conductivity can be calculated each about 1.2 × 108 and 70 S. By this analysis then can be the fundamental study for the optical application of MnxFe3-xO4-PEG.

Keywords
Magnetic hydrogel, MnxFe3-xO4-PEG, optical properties, and electrical properties

Topic
Rock Magnetism

Link: https://ifory.id/abstract/6FUBC2f4XqL7

Corresponding Author
Nadiya Miftachul Chusna

Institutions
Sunaryono(a,b)*, Nadiya Miftachul Chusna(a), Nandang Mufti(a,b), and Ahmad Taufiq(a,b)
(a)Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5, Malang 65145, Indonesia
(b)Research Center of Minerals and Advanced Materials, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5 Malang 65145, Indonesia
*corresponding author: sunaryono.fmipa[at]um.ac.id

Abstract
Silver material has been successfully synthesized using the chemical reduction method, while Mn0.25Fe2.75O4/silver material has been successfully fabricated using the coprecipitation method. The characterization of the crystal nanostructure of the material was carried out using an XRD instrument whose results showed the appearance of diffraction peaks corresponding to the magnetite and silver phases. The characterization of functional groups from the sample was carried out using FTIR instruments whose results showed that the functional group bonds produced corresponded to the wavelength range of the material constituents of Mn0.25Fe2.75O4/silver. The magnetic properties of Mn0.25Fe2.75O4/silver material were successfully characterized using VSM instruments. The results obtained are in the form of a hysteresis curve which shows that the sample Mn0.25Fe2.75O4/silver has superparamagnetic properties which are indicated by a coercive field value that is close to zero. While the antimicrobial activity was characterized by using the diffusion method and the results showed that the anti-microbial activity of the sample /silver worked very well. This result is characterized by the emergence of microbial free zones around the sample Mn0.25Fe2.75O4/silver with a significant radius.

Keywords
Mn0.25Fe2.75O4/silver, Magnetic Properties, Anti-Microbial Activity

Topic
Magnetic Methods

Link: https://ifory.id/abstract/u6C4DYZAxyvV

Corresponding Author
Mochammad Bagas Setya Rahman

Institutions
a) Physics Department, Faculty of Mathematics and Science, State University of Malang Jalan Semarang 5, Malang, East Java 65145, Indonesia.
*yoyok.adisetio.fmipa[at]um.ac.id

b) Advance Material and Mineral Laboratory, Faculty of Mathematics and Science, State University of Malang, Malang, 65115, Indonesia

Abstract
Lahor Dam is located in Karangkates Village, Sumber Pucung District, Malang Regency serves as an alternative connecting road between Malang regency and Blitar regency. Lahor Dam also functions as an area irrigation system and hydroelectric power plant. Of the 18 piezometer units in the impermeable core of the Lahor dam and there is only one active piezometer unit. This caused the water table surveillance in the impermeable layer of the Lahor dam to be disrupted. The purpose of this study was to determine the location of the water table using the georadar method in the impermeable core of the Lahor dam so that it can determine the type of material contained in it as well as the value of pore pressure from upstream to downstream of the dam. The georadar method is one method in geophysics that uses the principle of electromagnetic waves propagation. This research was carried out by scanning 7 tracks at the top of the dam from the south end to the north end and vice versa. The results of the data obtained are interpreted using Geoscan32 software to determine the location of the water table used to determine the type of material based on the calculation of the propagation speed of electromagnetic waves. The water pore pressure value is obtained by calculating the hydrostatic pressure where the water table is located on the piezometer location. Based on the results of analysis and interpretation of the data, it was found that the type of material in the impermeable of the Lahor dam is clay soil. The condition of the impermeable core of the Lahor dam is monitored safely, which can be seen from the decrease in the pore pressure value of the water from upstream to downstream of the dam.

Keywords
Dam, Water Pore Pressure, Soils, Impermeable Core, Ground Penetrating Radar, Geoscan32.

Topic
Electromagnetic Methods

Link: https://ifory.id/abstract/hYTPpfJUdBD9