bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of university accreditation prediction system
Authors: Musthafa M B , Ngatmari N , Rahmad C , Asmara R A , Rahutomo F 
Published: January 2020

Abstract
Higher education accreditation body (Badan Akreditasi Nasional Perguruan Tinggi/BAN-PT in Indonesian) 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 (Sistem Penjaminan Mutu Internal/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 assessor. This condition causes a lack of assessment accuracy, then causes the quality of SPMI itself. On the other hand, University has abundant of condition data, saved in higher education database (HEDB). 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 K-Nearest Neighbor (K-NN). This proposal exploits several data: student, academic, admission, and alumna. K-NN and naive Bayes work in registrant and capacity ratio, student registration ratio, average student Grade Point Average (GPA) in late five years, and on-time graduation scale. The experiment results show the average accuracy of naive Bayes and KNN are 70% and 95.2% respectively.
Recognition of the character on the map captured by the camera using k-nearest neighbor
Authors: Harijanto B , Amalia E L , Mentari M 
Published: January 2020

Abstract
Maps are one form of an image that often encountered in various interests. For example, many books on tourist attractions or other information that provide maps as a media of information. However, sometimes people with visual impairments such as presbyopia, hypermetropia, or astigmatism have difficulty reading the map which is usually given in small size, multi orientation (multi-scale and multi-direction). Therefore, this study tries to provide a solution through an application that converts image to text in image conditions that have many orientations and different things are briefly called heterogeneous text. The Optical Character Recognition (OCR) system that was built beginning with taking pictures made through a cell phone camera as the first step in obtaining a digital map file, then enters the pre-processing, text segmentation, feature extraction from each different character, then continues to the classification stage. This OCR system for recognizing text with multiple orientations will help people make digital maps easier to read, especially for people who have presbyopia, hypermetropia, or astigmatism vision problems. The proposed model achieves good average accuracy for classifying the characters in various orientation successfully.
Security system design for cloud computing by using the combination of AES256 and MD5 algorithm
Authors: Khakim L , Mukhlisin M , Suharjono A 
Published: January 2020

Abstract
Data is a collection of information that is combined into one and has a very important meaning. In the study, the object to be secured is the password data, the encryption method Advanced Encryption Standard (AES) with a key length of 256 bits, before the data is encrypted with method of AES, the first password will be encrypted using MD5, and the second one will be encrypted again using the AES256 method. Based on trial data conducted through two sites about the complexity of passwords, it can be concluded that the original data (before encryption) no 1 to 5 increased to 32 bytes after being encrypted by the MD5 method, and its size increased again to 88 bytes after being encrypted by the AES256 method. Data can be obtained by value original data AES256 is 9, 96 times larger than its original size, would be but the value of the complexity of her also increased in line with the increase in the number of characters or the byte size of the data password above, thereby increasing the level of difficulty by the party that will hack the login data in the cloud.
Historical role-playing game application of Sunan Ampel
Authors: Fathoni K , Adventure E T , Bagar F N C 
Published: January 2020

Abstract
Sunan Ampel is a religious figure and one of the legendary members of Walisongo in Surabaya even on Java. The history of Sunan Ampel is rarely known by the public or even very little information is known about him. This is because the existing references are still limited, difficult to obtain and not interactive. Therefore, we need media that can describe the history of Sunan Ampel interactively and not based on textbooks. This can be overcome by developing game-based Sunan Ampel historical applications. This game is built with two-dimensional characters and the genre of Role-Playing Game. There are 3 phases in the history game Sunan Ampel, namely: the phase in Wonokromo, the phase in Yellow Flower, and the phase in Ampel. Some NPCs are involved such as some wild animals, residents, Kibang Kuning and Prabu Brawijaya. The black box testing of interface and game design results show that all game features are running well on desktop platforms and the games storyline has illustrated some of the history of Sunan Ampel.
Rough set and machine learning approach for identifying flow experience in e-learning
Authors: Sahid D S S , Efendi R , Putra E H 
Published: January 2020

Abstract
Flow experience as a psychological theory has been implemented in various fields, especially in games and marketing. Flow is an optimal condition that someone feels immersed, focused and enjoy an activity. Based on this theory the psychological experience is represented as anxiety, boredom, and flow. Considering the psychological conditions in learning activities can improve the performance of students. Thus, involving the flow experience in learning process particularly in e-learning environment becomes very interesting and challenging. This challenge is how to identify the student flow experience during interaction students with the e-learning. In the previous study, flow was measured by conducting a series of questionnaires after a learning process. This is very inefficient, especially if applied in an adaptive e-learning. Additionally, this measurement is often unnatural, since it cannot capture the students learning behavior. Therefore, this study presented flow experience identification when students interact with e-learning using rough set and machine learning approach. Rough set is an efficient tool to solve the uncertainty, imprecision, and vagueness. While, the fuzzy rule and decision tree, as part of machine learning methods were implemented as a comparation. The identification was done using learning behavior parameters included duration of access, frequency of access, assessment score, and duration time to complete the assessment. As the results, the rough set can identify the flow experience with accuracy level is 92.92%. On the other hand, the fuzzy rule and decision tree provide accuracy level are 91.86% and 92.39%. As a conclusion, this study showed that the flow experience could be measured with the high accuracy level. In the context of e-learning, it can be used by e-learning to provide an adaptation. Appropriate adaptation is expected can keep the psychological condition of the students in optimal state.
Design and implementation: Portable Floating Pico-Hydro
Authors: Dewatama D , Fauziah M , Safitri H K , Adhisuwignjo S 
Published: January 2020

Abstract
Malang City which is located at an altitude between 440 - 667 meters above sea level, and surrounded by mountains. Thus, the city of Malang has many springs and rivers with high speed flow. At present, river flow energy that used as hydroelectric power is very least. River flow hydroelectric power schemes are often presumed to be less ecologically damaging than large-scale storage hydroelectric power schemes, and then low priced materials, easy to use and easy to care for. Therefore, researchers have design of Portable Floating Pico-Hydro (PFPH). PFPH using a low speed DC generator (500rpm, 18VDC, 15A), controller, DC-DC converter and battery as a load. Voltage output of PFPH is set to have a constant output of 14 volts DC with PI control algorithm. Specifications of PFPH are turbine diameter is 500mm, turbine width is 500mm, overall length is 1200mm and overall width is 1200mm. PFPH tested at a water speed of 1.5 m/s - 4 m/s and generated power 10W-223W.
Design of SCADA for Load Frequency Control prototype using PLC controller with PID algorithm
Authors: Wibowo S S , Syamsiana I N , Kurniawan B I 
Published: January 2020

Abstract
Frequency deviation from the nominal value of 50 Hz must be within the allowable tolerance limit of 2%. Load changes contributes to vary the frequency then settings are needed using LFC (Load Frequency Control) which controls speed of generator. From the issue, the research is about of making a learning prototype for the control system. Frequency is set using a Programmable Logic control (PLC) Twido TWDLMDA20DUK by using a Proportional Integral Derivative (PID) algorithm and can be supervised via SCADA. The results of experiments were analysed their stability of frequency and speed. PID values are obtained from Ziegler Nichols method and Auto Tuning. Close loop experiments shows that with a value of Kp = 1 Kd = 0.115 Ki = 0.49 can improve the frequency 49.41 Hz at 3.5 Nm load. The transient response at steady state which is 50 Hz, the Ziegler Nichols method has a rise time value greater than the other methods of 21.09 ms, the overshoot is relatively small, 0.492%, settling time 0.03s and steady state error of 0.004 so that when the load changes the stability response of the Ziegler Nichols method is faster than the other methods.
Analysis and testing of DC motor control system for electric bike
Authors: Parastiwi A , Al-Akbary P C M , Safitri H K 
Published: January 2020

AbstractThe proposed electric bike is driven by using a 24V350WDC motor and VRLA 24V battery as a source of voltage. Input point settings are done by pressing the speed control button in the form of digital data, which is then converted to voltage by the microcontroller. The output of the microcontroller in the form of a PWM becomes input for the motor driver, where the output speed of the motor will be detected by the speed sensor. The automation used is the PI method using the Zeigler Nichols 2 tuning formula. The control method using PI had been analyzed and tested, resulting in Kp=3.37 and Ki=0.73. The electric bike has been tested with different loads. The proposed electric bike was successfully controlled and able to be driven with a minimum speed of 5km/h and a maximum speed of 20km/h.
Design of an early fire detection system based on GPS module
Authors: Rachman F Z , Yanti N , Jamal N , Purwanto E , Hadiyanto H , Suhaedi S , Sorongan E 
Published: January 2020

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.
Speed controller of wind turbine emulator using variable speed drive based on PI method
Authors: Rifa’i M , Mandayatma E , Putri R I 
Published: January 2020

Abstract
The wind turbine system as a power plant is growing rapidly in line with the electrical energy needs and limitations of fossil energy as a source of electrical energy. Many research has been carried out to develop wind turbine systems and improve system efficiency. Research on wind turbine systems requires wind turbine emulators to simulate the behaviour of wind turbines against changes in wind speed. In this paper presents a design of speed controller based on PI controller for a Wind Turbine Emulator (WTE) using a Variable Speed Drive (VSD). WTE consists of VSD, microcontroller, 3 phase induction motor, Permanent Magnet Synchronous Generator (PMSG) and speed sensor. PMSG speed depends on wind speed. At certain wind speeds, PMSG will rotate at a certain value. WTE will adjust the speed of the induction motor according to a certain wind speed to drive PMSG. Motor and PMSG rotation speed are measured by rotary encoder sensor as speed sensor and feedback for WTE. Proportional-integral method is used to control the speed of a 3 phase induction motor through VSD analogue input. Based on experiment result, PI controller can adjust speed of induction motor so that PMSG will rotate according to a certain wind speed. WTE with PI controller controls the speed of induction motor at settling time 9s to simulate wind speed through PMSG speed controlling.
Optimization of 1 phase induction motor speed in the process of filtering soybean pulp using PI control method
Authors: Adhisuwignjo S , Dewatama D , Fauziah M 
Published: January 2020

Abstract
Tofu is one of Indonesia’s special foods made from fermented soybean juice. There are several processes in making tofu. One of them is the process of filtering the juice with soybean waste. The filtering process will determine the quality and quantity of tofu. The better filtering process, the more juice are produced. The purpose of this study is to improve the results of the soybean pulp filtering process. One way is to use an induction motor for a spinner filter machine with adjustable speed. To set the speed is using VSD as a motor driver. VSD output is a frequency that can be used to regulate the speed of the induction motor. Determination of motor speed is using the PI Ziegler-Nichols oscillation tuning method so that a stable motor rotation speed is obtained. Kp value = 0.108, and Ti = 0.83 with load test conditions and 700rpm set point has the characteristics of the system response% error steady state = 7.5%, rise time = 4 sec, settling time = 4.5 sec and% over shoot = 0%.
A low public awareness of illegals red colorants usage: A case study in ketchup and crackers at traditional market of Sukolilo Surabaya
Authors: Rachmaniah O , Rahmawati Y , Suari N M I , Kurniawansyah F , Bhuana D S , Ningrum E O , Puspita N F , Puspitasari A , Fakhrinanda F , Istiqomah I , Muhsin M R , Widya A P 
Published: January 2020

Abstract
The low public awareness to unhealthy food products causes many unhealthy and unsafe food products still found and distributed, especially, in the traditional market. Food additives, synthetic colorants and sweetener, are widely applied in food due to its stability, attractive in colours, and cheaper. Therefore, a survey and determination of illegal reds colorants, Rhodamine B, conducted particularly in ketchups and crackers in Sukolilo Area of Surabaya, East Java, Indonesia as well as three others legal reds colorants red allure, erythrosine, and ponceau 4R. Seven traditional markets at Sukolilo district: Keputih, Gebang Putih, Menur Pumpungan, Nginden Jangkungan, Semolowaru, Klampis Ngasem, and Medokan Semampir, were sampled. Instead of ketchup and crackers, beverages, and traditional cakes are also classified containing reds colorant. They are 38 samples were collected from six traditional markets at Sukolilo district: ketchup 31.58%, crakers 5.26%, beverages 23.68%, traditional cakes 28.95% while the rest is classified as other, i.e. seasonings and sausages. None of those are found at Medokan Semampir traditional Market. None of the collected ketchups contain Rhodamine B. Ponceau 4R and Erythrosine are the common red colorants detected in the ketchups. All the crackers and some samples of traditional cakes that mostly homemade do contain Rhodamine B.
Agricultural drought monitoring based on vegetation health index in East Java Indonesia using MODIS Satellite Data
Authors: Kirana A P , Ariyanto R , Ririd A R T H , Amalia E L 
Published: January 2020

Abstract
Agriculture is among the most vulnerable of all sectors to drought. Droughts cause serious effects on the agricultural sector due to its heavy dependence on rainfall. In the present work, we use the Vegetation Health Index (VHI) of MODIS Data as drought indices to monitoring the drought over East Java, Indonesia. VHI is computed based on the vegetation index and land surface temperature which are very important satellite products for drought monitoring with remote sensing. VHI describes vegetation health from the combination of TCI VCI. Based on VHI monitoring drought area distribution increase 3.69% in period 2017-2018. The highest distribution of drought area occurs in July to October. Average distribution of drought area is 22.24% in 2017, and 25.93% in 2018 from total wide 1.174,586 km2 of paddy field area. Based on VHI value in 2017 to 2018 the drought maps in agricultural area of East Java were dominated by moderate drought.
The effect of sodium hydroxide concentration on yield and properties of Bacterial Cellulose membranes
Authors: Kamal A S M , Misnon M I , Fadil F 
Published: January 2020

Abstract
Bacteria cellulose (BC) derived from Acetobacter xylinum strain possess several advantages such as elevated water holding capacity, high porosity and excellent mechanical strength. BC is useful to replace vegetal plant and applied into various industrial field such as papermaking, packaging and textile. In this study, BC membranes were produced from coconut water based consists of 8.0% sugar, 0.5% ammonium sulphate and 1.0% acetic acid at pH 4.5, followed with the addition of 10.0% inoculum before subjected to static incubation for 7 days. This study evaluated the changes of BC membrane properties using different concentration of sodium hydroxide (NaOH) under room temperature within 24 hours. The morphological, physical, chemical structure and water vapour permeability (WVP) of BC were analysed using FESEM, XRD, FTIR and WVP analysis, respectively. Results show that BC is mainly consist of cellulose I± with high crystallinity and smaller crystallite sizes. The differences in NaOH concentrations varied the fibrils diameter of cellulose, in accordance to FESEM images. The use of higher concentration of NaOH (≥ 2.0%) gave a smooth cellulose structure with less porosity, thus reducing the WVP properties of BC.
Food awareness of college students consumers towards unhealthy snacks: A case study of food colorant at “Bundaran ITS” landmark of Institut Teknologi Sepuluh Nopember (ITS) Surabaya during Ramadhan festival
Authors: Rahmawati Y , Suari N M I , Kurniawansyah F , Bhuana D S , Ningrum E O , Puspita N F , Puspitasari A , Fakhrinanda F , Istiqomah I , Muhsin M R , Widya A P , Rachmaniah O 
Published: January 2020

Abstract
The high number of registered college students of Institut Teknologi Sepuluh Nopember (ITS) in 2018/2019 academic year as well as their neighbour polytechnics, i.e. Politeknik Elektro Negeri Surabaya (PENS) and Politeknik Perkapalan Negeri Surabaya (PPNS), makes them as potential consumers in food industry. Most of them purchase food or beverages from the inside-campus food service, canteens. However, during the Ramadhan festival, most of the canteens are closed. Therefore, many seasonal food stalls are open for business at “Bundaran ITS” starting at 15.00 until 20.00 WIB (West Indonesian Time Area), providing food or beverages for breaking the fast. Therefore, a survey was conducted to check the healthiness of the food, meaning the food colorant additive especially red colorants. Moreover, this study also examined relationships among healthy food awareness, behavioural intention toward healthy foods, and actual behaviour of the ITS consumers. Thirty-seven (37) samples were collected during two periods of survey, at 9-12 May 2019 and 28-29 May 2019. The collected samples focused on the samples that might have red colorants. The collected samples were classified into three categories: beverages (32.43%), ketchups (54.05%), and snacks (13.51%). Gratefully, none of them contained Rhodamine B.
The decrease of high chlorine on seaweed industry wastewater
Authors: Prayitno P , Rulianah S , Maryanti Y , Putri P O 
Published: January 2020

AbstractIn the seaweed processing industry to obtain quality products that are free of microorganisms, high concentrations of chlorine are used in the cooking process. Thus the wastewater from the cooking process still contains high concentrations of residual chlorine, where the wastewater when disposed of into the aquatic environment can cause pollution and damage of environmental. The aim of the research is the reduction of high concentrations of residual chlorine in seaweed wastewater using a combination process of aeration, heating and addition of Hypochlorous acid (HCl). The experiment was conducted by adding wastewater from the seaweed cooking process with HCl (1; 2; 3; and 4% v/v), aeration flowrate (1; 1.5; 2; and 2.5 Ls/minute) and heating temperature (35; 40; 45; and 50°C). Residual chlorine concentration was measured using the iodometric method. The experimental results showed that the maximum reduction of residual chlorine by 96.3% was obtained by adding HCl by 3%, aeration flowrate of 2.5 L/minute and heating temperature of 45°C.
Comparing method equivalence class partitioning and boundary value analysis with study case add medicine module
Authors: Aryandana I G S , Permanasari A E , Adji T B 
Published: January 2020

Abstract
Software Testing is helpful to alleviate the developers’ task in improving the system. But in doing software testing, there are problems faced by developers, including information that become a benchmark in the feasibility of software testing. Many factors are used to obtain information or benchmarks. These factors can include line code, program structure, business processes and the time used in conducting trials. A test case is needed to ensure one of the two testing processes. The first is to make sure the data type of the entered data. The method of this process is called Equivalence Class Partitioning (ECP). The second is ensuring the lower bound value, the middle bound value, and the upper limit value of the number of strings as inputs of a system module. The method of this process is called Boundary Value Analysis (BVA). The purpose of this study is to compare the ECP and BVA methods. The expected result of this study is to find out the best method between ECP or BVA. Comparison of calculations using standard matrix testing. This study uses 5 parameters as benchmarks. Based on this study, the ECP method is superior to BVA with 5 parameters used as benchmarks.