bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigating pump cavitation based on audio sound signature recognition using artificial neural network
Authors: Arendra Anis , Akhmad Sabarudin , Winarso Kukuh , Herianto  
Published: July 2020

Abstract
How to investigate the occurrence of cavitation in the pump? Several studies have shown the sound characteristic that occurs during cavitation. This research attemps to build a pump cavitation detection system based on the audio signal of the operating pump. Audio signal is recorded using a microphone through a computer sound card. Then perform the frequency domain feature extraction and the correlation analysis for feature selection. From this process, 9 frequency domain features are selected as the artificial neural network classifier input. This artificial neural network classifier is trained with the Resilient backprogation algorithm The performance of this detection system is able to determine the existence of cavitation with an accuracy rate of 82.5%.
Analysis of HOTS Type Multiple-choice Test Items on Learning Automotive Electrical Systems in SMK Dharma Bahari Surabaya
Authors: Soeryanto  , Arsana I M , Hidayatullah R S , Ariyanto S R 
Published: July 2020

Abstract
This item analysis study aims to describe the quality of HOTS type multiple-choice test items who compiled for the learning automotive electrical systems. The type of this research is document analysis. Analysis of the data used in this study is about the content validity, reliability, level of difficulty, differentiating power, and the effectiveness of detractors. The result showed that: (1) the validity of the contents of the questions are in the valid category with a percentage of 55%; (2) reliability is in the high category with a coefficient value of 0.79 or a percentage of 79%; (3) in the level of difficulty the questions are more dominant in the easy category with a percentage of 53%; (4) the differentiating power of the questions is more dominant in the good category with a percentage of 30%; and (5) most of the questions have deceptive effectiveness that works very well with a percentage of 32%.
Performance analysis of forced convection coolers using synthetic jets with variations in altitude from synthetic jets to heat sources
Authors: Muslich Muchammad Baihaqi , Rhakasywi Damora , As’adi M , Cholis Nur 
Published: July 2020

Abstract
Every electronic device has a disadvantage that is heat generated from the components contained in the device while operating. The heat that occurs during the process can affect the effectiveness of these electronic devices. The cooling fan is directed to a heat source from an electronic device with the aim of maintaining the device’s performance temperature. However, the cooling fan used still has some disadvantages in terms of dimensions. Therefore, research on synthetic jets is carried out as an innovation in cooling. This study aims to find wave characteristics as a source. Optimum frequency selection to support cooling. As well as the ideal height of synthetic jets to heat sources. The method used in the research is direct and computer-based data retrieval for CFD. The use of triangular waves as a source of cooling with a frequency of 80 Hz at an altitude of 8 cm can reduce rapidly. However, the lowest final temperature comes from a height of 2 cm which is 28.1 °C.
Mefenamic acid treatment to ward follicles development and progesterone level
Authors: Aminah S , Lutfiasari D , Prasetyanti D K , Fitriasnani M E 
Published: July 2020

Abstract
Mefenamic acid is anti-inflammation non-steroid, which can hamper prostaglandin synthesis in the body tissue by hampering the siklooxigen enzyme. The purpose of this research is to find out the influence of Mefenamic acid toward the follicles development and progesterone level. This research is an experimental laboratory method. The subject of the research divided into five groups randomly selected and have been homogenized — one group as a control group and others as an experimental group with various dosages of Mefenamic acid treatment. The data is analyzed using a one-way Anova test. The results of this research are confirmed the significant difference of Grafian follicles, yellowish corpus luteum and progesterone level as the influence of Mefenamic acid. While there was no significant difference in tertiary follicles development. The decrease of corpus luteum is caused by Mephenamic acid activity to hamper the prostaglandin synthesis in the body tissue by hampering the siklooxigen enzyme. The prostaglandin can make follicles swelling and cause follicles fracture and make ovulation. The granulosis cell will make corpus luteum, which secreted progesterone hormone. Mefenamic acid was proven to avoid ovulation that blocked the formation of yellowish corpus luteum resulting in decreased blood progesterone level.
Detecting Text in the Scene Text Image Using Fast Fourier Transform
Authors: Nahari R V , Putro S S , Setiawan N , Alflta R 
Published: July 2020

Abstract
Text in images express a lot of information for image understanding. Detecting and recognizing text facilitates many important applications. The characteristics of a text with different shapes and contour patterns require special computer vision to detect and recognize when compared to other objects in the image. Text detection is the process of detecting text in an image followed by surrounding text with a rectangular bounding box. It can be performed by using image-based or frequency-based techniques. Many applications require text detection in images ranging from automatic detection of traffic signs that help in the transportation system to assist blind people and others in need. The data of this study were Focused Scene Text with the JPG format. The method used to detect the text in images was Fast Fourier Transform (FFT). The final results of the study showed that 95% of the text could be detected in an image by various camera perspectives and was expected to help develop text recognition applications in an image.
Signal Classification and Electromyography (EMG) Instrumentation Design as Basic Electronic Control System
Authors: Ulum Miftachul , Rozi Fatkur , Ibadillah Achmad Fiqhi 
Published: July 2020

Abstract
Human body naturally contains complex electrical signals ranging from the mechanism of the brain, heart, and muscles. Electromyography (EMG) is the development of biomedical engineering devices used to record electrical signal activity produced by muscles. The signal produced by the muscle has a very small amplitude, therefore, an amplifier circuit is required to read the signal using microcontroller. In this study, EMG signal amplification was carried out periodically to reduce errors that might occur if only charged to one signal amplifier. Signal reading was performed by conducting 5 different basic hand movements. Muscle signal activity during relaxed conditions had an amplitude of 0.05 V. Moreover, it conveyed an amplitude of 0.27 V up to 2.62 V with a signal gain of 10.350 when the muscle did different movements. The K-NN algorithm was used to classify EMG signals and determined the hand motion output used as a basic electronic control system. Results showed success rate of 88%. Failures when carrying out basic electronic control was due to the signal classification processes that had not met the parameters and the signal amplitude that was almost similar to another signal.
Automatic Clean Water Treatment System Using The Sugeno Fuzzy Method
Authors: Hanif S , Rahmawati D , Alfita R , Awal A S , Doni A F 
Published: July 2020

Abstract
All Water is the most important source in the human body, healthy water can help the metabolic processes in the body perfectly. Water used by humans must be in accordance with those set by the government (Permenkes RI number 492 of 2010, regarding the requirements and supervision of water quality). Clean water according to regulations issued by the government through the Indonesian Ministry of Health is having a PH value of 6.5 - 8.5, TDS (Total Dissolved Solid) a maximum of 500 mg / L, and a maximum turbidity level is 5 NTU (Nephelometric Turbidity Unit). In the process of managing dirty water into clean water, it must be done carefully so that the germs in the water are completely gone and the people who use them are free from all diseases. From the problems above, a clean water management system has been created. This system can read the value of water suitable for use or not. Water condition readings using PH sensor, TDS (Total Dissolved solid) sensor and turbidity sensor (TSD 10). Data values from the sensor (input) are processed using fuzzy method as a logic to start the pump if the water value does not match the set point specified and display the sensor value on the LCD (Liquid Cristal Display). The results of the whole system were obtained an average error for the sr-HC04 sensor 1%, turbidity 2.12%, the TDS sensor 2.40% and the pH sensor 0.48%.
Design of Children Monitoring Application for Outdoor Activities Using a Smart Watch
Authors: Indrayana I N E , Sutawinaya Putu , Wirasyanti N M , Swardika I Ketut , Sunu Putu Wijaya 
Published: July 2020

AbstractThe background of this research is the increasing of criminalization in children, one of which is kidnapping of children, Meanwhile many parents have to work so they don’t have enough time to be always close to their children. The purpose of this research is to develop applications that can help a parents to monitor the movements of their children’s outdoor activities. The application uses a smart watch to get the child’s GPS position and at the same time the device sends the last position of the child to the firebase database server. Parents can monitor the child’s movements through the android smart phone device in realtime. The application design uses several UML (unified modeling Language) diagrams namely use case diagrams, activity diagrams and squence diagrams. This application requires data objects including parent, child, family and child’s position (latitude and longitude). The main use cases in this application are sending position, case view, child location on map and view path of moving each child. The application can run only if there is an internet connection and the child uses smart time.
The Smart Islands Vision: Towards Smart City Readiness in Local Government of Archipelagos
Authors: Arief A , Abbas M Y , Wahab I H A , Latif L A , Abdullah S D , Sensuse D I 
Published: July 2020

Abstract
Today, the smart city has become a trend in the world and in the city’s governments in Indonesia. The typical geographic condition of the city, municipality and district government in Indonesia is more directed to the governance of island governments that have own factors, challenges and opportunities. One of the visions of the archipelago’s government is the Smart Islands vision, which is to make the islands become a smart city with connected islands, integrated, collaborations between stakeholders and improved public services with own local wisdom. However, the readiness level, the actual problems found in the existing conditions are not yet evaluated and measured. In this study, we conducted a smart city readiness assessment with the adoption of the Nusantara Smart Government Model (NS-GM), which was combined with the Model SPBE instrument on Presidential Regulation No. 95 on 2018 as the official regulation of the Indonesian government. We choose 2 case studies as an example of an archipelago’s government in Indonesia, namely Ternate City and district’s government of Southern Halmahera because the area has the criteria as a government of an island region that has a vision of smart islands. Smart cities readiness assessment results show that 2 case studies that are measured in readiness, are generally still in the pilot stage with values in the 2 towards 3 phase model that we used.
Effect Electrolyte Temperature and Electrode Distance to Electroplating Hard-Chrome on Medium-Carbon Steel
Authors: Yusron R M , Bisono R M , Pramudia M 
Published: July 2020

Abstract
ASSAB 618S steel is a type of medium carbon steel that is often used as a machining tool for the petroleum industry. Based on the observation, it does not work optimally due to high acidity. As a result, there is corruption in the machining tool. In this study, an electroplating process will be carried out as a way to overcome corrosion in machining made of ASSAB 618S steel. The variables involved independent variables, dependent variables, and control variables. The independent variable is the temperature of the electrolyte solution with variations of 55°C to 70°C. The dependent variable is the corrosion rate on the results of electroplating hard chrome coating. The controlled variable is the distance of electrodes with variations of 3 and 9 cm. The data obtained showed that the highest corrosion rate was obtained from the temperature variation of the electrolyte solution of 55 degrees Celsius and the electrode distance of 9 cm, while the lowest corrosion rate was obtained at a temperature variation of 70 degrees Celsius electrolyte and 3 cm electrode distance. The data is in accordance with the theory of corrosion rate that is smaller better. It means that the smaller the corrosion rate, the better the corrosion resistance. Based on the results of this study, it can be concluded that the temperature of the electrolyte solution, the distance of the electrode, and between both interactions give an influence on the corrosion rate of the electroplating hard chrome coating.
The Effect Of Extrusion Machine Againt Consistency Filaments Products 3D Printing
Authors: Faisal Rony Azmi 
Published: July 2020

Abstract
The need for filaments is currently increasing but the prices offered in the market are very expensive. This research develops a new extruder machine with HDPE material. The high quality filaments are characterized by high durability and constant diameter. The variables used in this research are temperature, screw speed, towing speed and blower. Based on ANOVA processing using Minitab it is known that all variables have no effect on the uniformity of diameter and ovality response. Based on the results of this research that the bottle cap tensile strength (HDPE) has a value of 15.7 so that it is still far below the PLA tensile strength.
Split tensile and flexural strength of concrete with artificial lightweight aggregate (ALWA) and steel-fiber
Authors: Wulandari M , Sofianto M F , Tavio  
Published: July 2020

Abstract
In this study, ALWA made from Styrofoam. Styrofoam is reprocessed by adding acetone solution. The use of acetone is to form styrofoam into harder grains so that it resembles coarse aggregates so that they can be used as substitutes for coarse aggregates in concrete mixtures. Hooked type steel fibers are also used as additives in this study. Steel fibers used are 0%, 0.75% and 1.5% of volume concrete while for the composition of ALWA Styrofoam were 0%, 15%, 50% and 100% for split tensile strength testing, respectively. Concrete composition for flexural strength testing is the optimum composition of the tensile strength test results. The results showed concrete with a mixture of 15% ALWA Styrofoam and 1.5% steel fiber was able to produce optimum split tensile strength, the most optimum tensile strength testing of 5.29 MPa and for the flexural strength test results of 9.47 MPa at maximum load. Addition of steel fibers with a mixture of ALWA Styrofoam is able to make concrete to be more resistant to cracking and more ductile.
Sustainable Flood Prevention Using Interconnection of House Pump System
Authors: Kusnan  , Suryaman Heri 
Published: July 2020

Abstract
The Unesa Ketintang Campus in Surabaya City is in lowland with an altitude between 3-4 m above sea level. Every rainy season arrives in this area frequent flooding. Puddles that occurred in 2013 with a long pool of ± 4 hours. Efforts have been made in 2014 to tackle flooding by raising paving pairs in open fields and roads and making reservoirs of ± 0.6 ha in the Unesa Ketintang Campus environment, normalizing the channel and installing pump houses to support the process of accelerating the reduction of standing water happen. However, still standing water (2014, 2015, and 2016) with a pool of ± 2 hours. The condition of the campus location which is lower than the condition of the surrounding area causes waterlogging and flooding in the study area. This study proposes a flood mitigation model using interconnection of the pump house system to reduce waterlogging, accelerate the water flowing process, and still optimize the operation and function of existing reservoirs. Water pump interconnected Pump House P1 to P8, namely: Unesa I Water Pump House (P1) functions to drain water from the campus area to reservoir campus, then in Unesa II Water Pump House (P2) serves to drain water from reservoir campus, which is flowed south towards the Wonorejo Primary channel through the Water Pump House (P3) and partially forwarded to the north of the Kalimir Jagir Water Pump House (P4), while eastward to drain water from the Wonorejo Primary channel to the Jemursari Prapen Water Pump House (P5 ) serves to help drain water from the Wonorejo Primary channel towards Jagir River, the Water Pump House Wonorejo I (P6) has a capacity of 8.9 m ^ 3 / sec to accelerate the flow of water to the Water Pump House Wonorejo II (P7), Pump House Water Wonorejo II (P7) is used to accelerate the flow towards reservoir Wonorejo, and the reservoir Wonorejo Water Pump House (P8) serves to accelerate the flow of water to reservoir Wonorejo to be forwarded to the sea. Interconnection of the water pump system is able to overcome waterlogging and inundation problems.
Analysis of The Mechanical Properties of Concrete Beams That Use Pumice as a Partial Substitution of Concrete Mixtures
Authors: Gaus Abdul , Imran  , Anwar Chairul 
Published: July 2020

Abstract
One of the most common inhibiting factors in the archipelago is the lack of availability of material resources and human resources. One of the options is the use of lightweight concrete precast using materials around the islands. The local material which is widely distributed in North Maluku is pumice but it has not been used maximally because so far it has only been used as pile material. This study aims to analyze the effect of partial substitution of pumice on fine aggregate in a concrete mixture. This research was carried out experimentally in a laboratory using UTM and divided into 2 stages. Stage 1, designing and analyzing concrete mix using pumice compared without using pumice, Phase 2 testing using concrete beam dimensions of 600x150x100 mm with an inter load of 150 mm. Beam test results show that the limited use of pumice in a concrete mixture does not greatly affect the strength of normal concrete beams, as indicated by the deflection value and strength of concrete blocks that are almost as large.
Material And Form Resilience in Dutch Architectural Style Buildings in Ternate (case study: Ternate nobleman’s house)
Authors: Harisun Endah 
Published: July 2020

Abstract
The material resilience and shape of Dutch buildings in Indonesia is very famous. This is evidenced by the establishment of buildings in the present. The resilience of material and shape of Dutch buildings was also found in noble homes with typical Colonial architecture in Ternate which was the object of research. The research method used is descriptive by comparing data in the field with literature studies and explaining elements in buildings such as walls, floors and frames. The conclusion that was achieved knew the resilience both in terms of building material and the shape of a house building with colonial architectural style in Ternate
Mode Choice Modelling For Interisland Transportation in North Maluku
Authors: Hakim Raudha 
Published: July 2020

Abstract
This research discusses to study and to analyze speedboat and Fast Boat users on the Ternate-Sofifi route and seeing preferences for choosing mode changes in travel costs, trips, itineraries and frequency of trips. The research activity carried out publishes the initial survey and the main survey through the distribution of questionnaires prepared by the method stated a preference. This research was conducted on 120 respondents and collected as many as 98 who met the requirements (valid). These questionnaires were distributed during field surveys directly on port speedboats and fast boats in the city of Ternate. The results of the questionnaire were further processed to obtain the characteristics of respondents and the model of a quick ship and speedboat ship mode selection. The purpose of the trip is mostly official travel for quick ship users and family / social needs for speedboat users. While the reasons for choosing the crossing, mode are considerations for quick ship and frequency reasons for speedboat ship users. Mode selection models between quick ship and speedboat ship obtained in the form of linear equations are: UQ sho - US1 sho = - 4,356 - 0.00000787X1 + 0.545X2 + 1,275 X3 - 0.067X4. With 4 attributes, they are: X1 = Travel expenses., X2 = Travel time X3 = Travel schedule and X4 = Frequency of Reception. Results Measurement of the percentage of all attributes (R2) obtained a value of 42.7%.
Reaction Kinetics The Formation of Calcium Sulfate From Cow Bone And Sulfuric Acid In Batch
Authors: Pujiastuti C , Ngatilah Y , Septianto M , Tantyono A 
Published: July 2020

Abstract
Cow bone is one type of solid waste that has not been utilized. This waste materials, contains a lot of calcium phosphate. When reacted with sulfuric acid it will form calcium sulfate. The research aimed to find the speed constant value of calcium sulfate formation reaction from cow bone powder with batch sulfuric acid. A 200 mesh cow bone powder is dissolved in water to form a saturated solution. This saturated solution was taken as much as 500 ml then reacted with 4 N sulfuric acid as much as 100 ml, stirred with stirring speed of 200 rpm, with temperature and time according to the variable being run. After reaching the studied condition, the filtrate is separated by its sediment. The precipitate was analyzed for the content of calcium sulfate. The variables studied in this study were reaction temperature (65°C. 75°C, 85°C, 95°C, and 105°C) and reaction time (15, 25, 35, 45, 55 and 65 minutes). The results showed that the reaction follows a pseudo first order reaction, obtained by the equation k = 3.09 e -9735.5/T.
Vinasse Treatment With Aerobic Microbial Method Using Activated Sludge
Authors: Utami I , Kautsar D B , Akbar R F 
Published: July 2020

Abstract
Vinasse liquid waste in this study obtained from the ethanol industry which has organic load of COD of 202,232.14 mg/L and BOD of 32,911.47 mg/L. Aeration is used to operate the activated sludge process unit to remove BOD from wastewater in the aerobic microbial method. The research was conducted by conditioning 3L of vinasse wastewater at pH 7 by adding 1 N NaOH, then the acclimatization process was carried out for 24 h using activated sludge with concentration of microorganisms is 13.578 gr/L and 5 L/min of air flow rate in the aeration tank. The processing of vinasse wastewater 3L at pH 7 was carried out on the addition of acclimatized activated sludge microorganisms with quantity 13,578 through 40,734 mg and aeration times in the range of to 2 through 10 h. Removal of organic matter from vinasse waste by activated sludge can be associated with the growth of microorganisms. The results showed that the addition of 40,734 mg of microorganisms for 8 h of aeration obtained the COD removal of 69.273 %, and BOD of 96.652 %.