bluuebunny/crossref_metadata_2025_split huggingface dataset:
Classification of Thesis Topics Based on Informatics Science Using SVM
Authors: Sari Rochman Eka Mala , Oktavia Suzanti Ika , Imamah  , Ali Syakur Muhammad , Anamisa Devie Rosa , Khozaimi Ach. , Rachmad Aeri 
Published: May 2021

Abstract
Thesis topic is an inseparable part in the world of tertiary education. Determining the thesis topic becomes a problem for students. The determination of the thesis topic leads to the trend of the topic in the development of computer science. The determination of the topic of thesis for students often ignores their ability to process. Ideally in determining the topic of the thesis, the record of student grades can be an important variable in deciding topics for students, where the student’s grade record is contained in the transcript. Therefore, this study uses the Support Vector Machine (SVM) method in recommending thesis topics by classifying selected subject groups that have been taken by students. The Support Vector Machine method is a classification method of supervision because it requires testing data and training data as a training process at the time of prediction. Support Vector Machine provides an optimal model, which provides a solution with a maximum margin to determine the distance of data to the hyperplane. The test results show an accuracy of 80%.
Implementation of Web Server Security Against Denial of Service (DoS) Attacks
Authors: Idhom Mohammad , Alit Ronggo , Fauzi Akhmad 
Published: May 2021

Abstract
Denial of Service (DoS) is one of the top cyber-attacks that grows exponentially attacking every company, agency, and organization with a percentage of 43%. This type of attack has the most damage to business operations and affects globally. By flooding the bandwidth or resources of a machine or system, attackers deny it so that legitimate users cannot access the service. The objectives of this study are: 1. Creating a security system on a web server against Denial of Service (DoS) attacks that are applied to containerization architecture. 2. Implementation of load balancing methods for securing the web server from Denial of Service (DoS) attacks. 3. Implementing the deployment process and monitoring the web server in the containerization architecture. The results of comparisons and testing of services carried out with denial of service attacks prove that the memory load used by a web server with containerization architecture is less than that of conventional web servers. Testing was also carried out on hardware performance, namely CPU. Conventional web servers are heavier by up to touching 0.00015% compared to web servers with the highest containerization architecture, only touching 0.00010%.
Phased-MIMO Radar : Angular resolution
Authors: Reza A , Muttaqin H , Miftachul U 
Published: May 2021

Abstract
Phased-MIMO is very suitable for multi-target detection such as radars for bird migration, radars for autonomous cars, fish radars and others. The problem is the ability of radar to distinguish the first target, the second target and the next target. This study reports the ability of Phased-MIMO radars to be able to distinguish two or more objects that are close known as angular resolution of radar.
Performances Combination Schemes AES-Turbo Code Based-on Keys Length
Authors: Kuswanto Dwi 
Published: May 2021

Abstract
In data communication the process of sending data in the form of information is susceptible to theft, destruction, modification or repetition of the data sent which causes information to be changed / corrupted according to the original data. One way to guarantee authenticity can be done by utilizing security techniques in the process of sending data, one of which is by using a combination of cryptographic and error correction techniques, namely AES and Turbo Code. This study aims to combine the two techniques and apply them to text data by evaluating based on the length of AES encryption keys. Performance results indicate that AES-Turbo cryptographic combination algorithms can work optimally at SNR greater than or equal to 15 dB, for the best test value for avalanche effects is 24.77 % at 256-bit key lengths and the testing data execution time with an average time of 9.19 seconds, the time required for decryption is longer than the time needed for encryption, and the longer the key the longer it takes for encryption and decryption. For selection of keys length of AES more efficiency and effectiveness that is by using 128-bit key.
An Empirical Study to Validate The Technology Acceptance Model (TAM) In Evaluating “Desa Digital” Applications
Authors: Andy Raditya , Dewi Alina C , As’adi M 
Published: May 2021

Abstract
The sustainability of Industry 4.0 has now entered into the tourism sector or Tourism 4.0. Where tourism in Indonesia is a potential thing but still not as expected. Previous research shows that the applied model has not yielded optimal results in predicting platform use, so one of the steps to further study the Desa Digital mobile application research is done with the variables used in this study: Perceived Ease of Use, Perceived Usefulness, Attitude Toward Use, Intention to Use, and Actual System Usage. The aim of this research is to know the technology acceptance variable using the Technology Acceptance Model (TAM) and evaluate it. The method used in this research is to use the Partial Least Square (PLS) method. The results showed that: (1) variables influencing the acceptance of the Technology Acceptance Model, namely: Perceived Ease of Use, Perceived Usefulness, Attitude Toward Use, Intention to Use and Actual System Usage, (2) constructs that affect the model namely Perceived Ease of Use Use and Perceived Usefulness for Attitude Toward Use, Attitude Toward Use for Intention to Use and Intention to Use for Actual System Usage.
E-readiness Measurement in the Virtual Application Learning
Authors: Wibawa Rindu Puspita , Wibawa Setya Chendra , Susanti Martini Dwi Endah , Sulistiyo Edy 
Published: May 2021

Abstract
Indonesia in the early 2020s was being rocked by the outbreak of Coronavirus Disease (Covid-19) which hit almost all parts of the world. Indonesia spontaneously implements a policy of learning from home (SFH) and working from home (WFH). Higher education during the WFH period needs to strengthen online learning. Universitas Negeri Surabaya has had e-learning developed using Moodle LMS and has been used as a form of learning called Vilearning Unesa (Vinesa). The research aims to measure the implementation readiness of Vinesa. This measurement needs to be done as an effort to support the successful development of e-learning. To know which factors are still weak and require improvement and which factors have been considered successful or strong in supporting the implementation of Vinesa. There are eight indicators used to measure the readiness of e-learning, namely the psychological readiness, sociological readiness, environmental readiness, human resource readiness, financial readiness, technological skill readiness, equipment readiness, and content readiness. However, this research focuses on one indicator that is directly related to students, namely content readiness. The research method used is qualitative research methods. The study began with a literature study on e-learning readiness. Then an indicator is set to be reduced to the items in the questionnaire. The object of research is students of Informatics in Universitas Negeri Surabaya.
Temperature Reduction to Enhancing Solar Panel Performance in Tropical Climate
Authors: Dasrun Deliana , Petrana Subhan , Wahab Iis Hamsir Ayub 
Published: May 2021

Abstract
The characteristics of climate in a region also influences the performance of solar panels, the characteristics are the intensity of solar irradiance, temperature, wind speed and humidity. An evaluation of the performance of solar panels needs to be done regarding the tropical climate in Indonesia. This evaluation is needed to determine how large the resulting energy production that will be used for the benefit of both technical and investment for Solar Power Plant. The purpose of this study was to examine the effect of wood powder composite board material in reducing the surface temperature of solar panels in order to increase the efficiency of energy conversion. The type of solar panel used is 50 Wp Polycrystalline. The results showed that the average of solar radiation is at 690 W/m2 resulting in an average current value of 1.8 A (with board dampers) and 1.68 A (without the board damper). While the average temperature of a solar panel without a damper is 36.4 ° C while the damping board drops to 34.6°C. Consequently increasing the output voltage level from 20,38 V to 20,55 V, This change also results in an increase in output Solar panel power on average from 47,8 Wp (without damper board) to 48,2 Wp (with damper board), with a reduction in power losses from 2,3 Wp to 1,8 Wp.
The SNR Performance of Cooperative Diversity in HF Skywave Communication Systems
Authors: Said Muhammad , Do Saiful , Abdullah  
Published: May 2021

Abstract
High Frequency (HF) communication systems uses the ionosphere to reflect signals from the source (S) to the destination (D) on earth. Variation of the height of the earth’s ionosphere layer causes the received signal also to fluctuate and affects the signal-to-noise ratio (SNR) at the destination. To maintain the SNR remains good value at the destination, cooperative communication system can be a solution. In cooperative communication system, all sources cooperate and coordinate with the relay (R) to improve the quality of the signal at the destination. In this communication system, the destination receives two signals, each derived from source and from relay. This paper divides the simulation observation time into 3 categories, namely midnight to dawn (00:00 and 04:00), morning to noon (08:00 and 12:00) and afternoon to evening (16:00 and 20: 00). In all categories of midnight to dawn, morning to noon and afternoon to evening, cooperative communication systems with maximal ratio combining (S - R - D) provide greater diversity gain than non cooperative communication systems (S - R - D).
Analysis of the Aircraft Guide Signal Interference in Mopah Airport
Authors: Corputty Roberto , Kaikatui R N , Muriani  
Published: May 2021

Abstract
Doppler Very High Omnidirectional Range(DVOR) is one of aviation navigation equipment which is in Mopah Airport which serves the best mamandu from and to the airport of destination. One recent years specifically the year 2018, there were complaints (criticism) of the pilot on beam interruption that caused it to equipment OBS (Omni-Bearing Selector) that there dipesawat not get an accurate azimuth as data information to the pilot could lead destination ground station where the airport is located. The method used is descriptive analysis method which describes the behavior of DVOR equipment, the environment around the equipment by using data that is processed by comparing the calculation parameters (antennas, transmit power, antenna gain, antenna sideband doppler effect, doppler effect) DVOR. The purpose of this research to know the influence of DVOR navigation equipment of the aircraft and determine the cause reception interference signals containing azimuth information to the pilot to find the destination airport. The result of the calculation parameters of the antenna with the speed of the sideband antenna 4147.7 feet per second to transmit power, gain and doppler effect that according to the standard equipment is the working frequency of 115.8 MHz to DVOR Mopah Airport so that the results obtained on the degree of 270-290 best get the signals radiated by the azimuth angle information is not accurate bearing caused by the emission of DVOR equipment obstructed by building new UPBU on Mopah Airport.
10 Segment Spiral Antenna to Measure Partial Discharge on High Voltage Equipment
Authors: Laksono Deni Tri , Laksono Dedi Tri , Ulum Miftachul , Oktavia Suzanti Ika 
Published: May 2021

Abstract
Electricity basically has become the main requirement for human beings on earth. Thus electrical reliability is the most important things so that electricity flow to consumers is not interrupted. The most electricity vital is substation, there are some disturbances that commonly occur in high voltage equipment in substation such as disruption due to old tool, interference due to human error, and natural disruption resulting in equipment damage. To minimize these disturbances we need a tool that can detect interference, namely sensors. One of disturbances in substations is Partial discharge. To find out a partial discharge in voltage equipment there are several ways such as measuring using a RC sensor detector and using an antenna. This study discusses partial discharge sensor that will detect the level of partial discharge that exists in high voltage equipment such as transformers, cables, GIS (Gas insulated switchgear) and others. Spiral antenna is the main topic in this research by making spiral antenna with 10 segments. The steps in making this antenna are firstly carried out design and simulation using CST 2018 software then implementing antenna on FR4 epoxy PCB. The antenna is tested for its characteristics based on several parameters such as VSWR, RL, and Bandwidth. This test is carried out using a VNA measurement tool. The test results show that this 10 segment spiral antenna produces a VSWR value of less than 2, an RL value of less than -15, and bandwidth included in signal frequency by partial discharge is around 300MHz - 3GHz.
A Study on the Use of Powder Zeolite as Backfill Material for Single Rod Grounding System
Authors: Sitorus H B H , Permata D , Wicaksono A 
Published: May 2021

AbstractOne way to reduce the value of grounding resistance is to replace the electrodes’ backfill material with other materials such as; gypsum, charcoal powder, and bentonite. In this paper we report the use of zeolite powder as a backfill material to bury the electrodes of the grounding system. The purpose of this research is to compare zeolite and pure soil to be used as a backfill material. The type of electrode used is a single rod electrode. The parameters measured were grounding resistance, rain intensity, moisture and pH of the backfill material. Measurements were taken every day for 30 days. It was found that zeolite as a backfill material is better than pure soil which is often used so far. It is seen that the resistance value of grounding system using rod that buried in zeolite as a backfill material is lower than a half of the resistance value of grounding system when using pure soil as a backfill material. From this research it was also found that the moisture of the backfill material was higher by using zeolite than pure soil.
Design of IoT-Based Smart Bins Integrated Monitoring System Using Blynk
Authors: Juwariyah T , Krisnawati L , Sulasminingsih S 
Published: May 2021

Abstract
Waste management has always been an important topic of studies. One of the efforts to handle waste in the Era of Industrial Revolution 4.0 was to start by designing a smart bin. The purpose of this study is to design an integrated monitoring system of several IoT-based smart bins. The hardware and software components used in system design were Wemos D1 Mini Pro Microcontroller, HC-SR04 ultrasonic sensor, DHT22 temperature-humidity sensor, Blynk and Arduino IDE. Blynk was used in building an integrated monitoring system for several garbage bins. In this study two samples were monitored through the Blynk application. The height value of the garbage was measured by an ultrasonic sensor while the humidity and temperature values were measured by the DHT22 sensor. In realtime, every measurement results of rubbish height, temperature and humidity were displayed by the Virtual Level of Blynk application on the smartphone. Graphical measurement results could also be displayed on Blynk.
Quality of drinking water sources in Sarmi Regency, Papua Province
Authors: Parlindungan J Y , Sumanik N B , Pongkendek J J , Rettob A L 
Published: May 2021

Abstract
In general, rivers in Sarmi still in their natural state. Those rivers have considerable discharge during the rainy season and decreased dramatically during the summer. Many rivers are used for domestic purposes such as bathing, washing and other needs in small amounts. Yet there is a river that is used on a large scale as a source of water for industrial activities. Of all the rivers which are the object of monitoring, there is no industry that directly generates large volumes of waste and channeled into the river. In some parts of the river, there are also residential areas, but there is no population growth that causes the expansion of settlements along the banks of these rivers. The sampling method used is grabbed samples. Some things to consider in the course of this sampling include: (1) Water samples taken are representative and reliable; (2) The volume of the sample taken in accordance with the minimum amount required. In general, any method of analysis used chemical parameters has limits specified rate. This is related to the power limitations of each method and measuring equipment used. In that regard, then the chemical analysis is often performed dilution or concentration, with the aim to improve measurement accuracy. The results of the study for water sources used by the community in the sarmi district of Papua Province showed that the values of the measurement results still meet the quality standards for first-class water quality Republic of Indonesia Government Regulation No. 82 of 2001, which is intended for drinking water, water recreation, freshwater fisheries, animal husbandry, and planting. Therefore this quality needs to be maintained by the community by protecting the environment and by the government as a partner by making regulations related to environmental preservation.
The Knowledge Inheritance System of Building Kombai Tribe’s Tree House in Boven Digoel
Authors: Hematang Y I P , Pamuttu D L 
Published: May 2021

Abstract
In the process of inheriting knowledge about building a Tree House, the Kombai Tribe in Boven Digoel applies a hereditary system in which the younger generation is directly involved in the construction of houses. The knowledge and skills to build a Tree House do not go through special training or education but are self-taught from parents to children. The process of building house also uses mutual cooperation system between residents within the village or between residents within one clan. But over time, it is known that there are some dilemmas or obstacles in passing down this knowledge. This dilemma then becomes an obstacle in preserving the Tree House. This study aims to determine the knowledge inheritance system of building the Tree House and what obstacles are experienced by the Kombai Tribe in preserving the Tree House in the city. This study uses an inductive approach with descriptive survey method.
Study of Utilization Plastic Waste as Basic Material for Boat Manufacturing Using Eco-green Design Concept
Authors: Noverdo S , Iswadi N , Reda R , Bambang S , Muayyad P. 
Published: May 2021

Abstract
The plastic waste problem has become a global problem and the effect on the environment is horrible.
Almost all countries make an effort to reduce their daily utilization. Environmental organizations and researchers are also performing research to find ways to recycle plastic waste. In this paper introduces the “Eco-green Design Concept” to utilize plastic waste (type 2) as fishing boat material. This concept will recycle 3 tonnes of plastic waste into the material of a fishing boat. In addition, the implementation element of eco-green design concept (design quality (D), Environmental Friendly (E), Eco-green Material (G)) into the design of fishing vessels has been successful. The concept does not only utilize type 2 plastic waste into the hull of the ship, but the design of the ship is made to have small resistance, good stability and has a large cargo area. And also has a machine that is environmentally friendly and does not cause pollution.
Steady State Simulation of a CO2 Heat pump system for Water Heating
Authors: Rais Sandi , Murayama Katrunori , Hasegawa Tatsuya 
Published: May 2021

Abstract
A steady state simulation model for a CO2 heat pump system was developed in order to evaluate system performance of water heating. A simple Macro Excel coding was develop to calculate the refrigerant condition in the heat pump pipe. The REFFPROP 8.0 also use to find initial value of the pressure, enthalpy and refrigerant characteristic. The Macro Excel and REFPROP 8.0 was developed by linked both programme because it provide a similar features. The simulation was compared with experimental data of a laboratory scale CO2 heat pump system. The pressure and temperature estimated by simulation were found to be approximately within 10% error between simulation and experiment. The COP obtained from the simulation was higher than that obtained by experiment and it was reduce as the effect of the mass flow rate of the refrigerant reduction for the performance analysis by the change of the closing angle of expansion valve.
Reducing Emissions CO, CO2, and HC, on Vehicles with Gasoline Fuel
Authors: Cipto  , Rahangmetan Klemens A , Sariman Farid , Parenden Daniel , Christian W Wullur 
Published: May 2021

Abstract
Merauke Regency is the largest regency in Papua with the highest fuel consumption by regency/city in Papua Province. The high fuel consumption is proportional to the emissions produced, so research on emissions absorbing media is needed to reduce emissions. Active charcoal has the ability to adsorption of emissions, one of the raw materials is plants. Bus wood (eucalyptus) which grows a lot in Merauke can be used as raw material for activated charcoal which is used as an absorber of emissions. Research with the title “application of eucalyptus charcoal as emission adsorbent to reduce vehicle exhaust emissions” processes wood logs into emission adsorbents, through carbonation and activation processes, then activated charcoal is applied to vehicle vehicles and subsequent emission tests, to determine emission reduction capabilities. Based on the results of emission tests, the use of activated charcoal as an emission adsorber can reduce emissions. 0.07% CO emissions decreased to 0.01%, HC emissions 84 ppm, decreased to 39 ppm, and 14.7% CO2 decreased 4.4%.
Effect of Holding Time and Cooling Media on Heat Treatment Process to Gear Motor Indopart Hardness
Authors: Rahangmetan Klemens A. , Cipto  , Wullur Christian W. , Parenden D , Sariman Farid 
Published: May 2021

Abstract
Industrial and technological advancements are growing rapidly, closely related to various machine tools, including the metal and construction industries. In the field of machinery many metal elements such as steel are involved. The progress of the metal industry has an important role, especially in the automotive world which uses a lot of metal materials. Therefore an attempt arises to change its mechanical properties in order to change the level of violence. This study aims to determine the level of medium carbon steel hardness (indopart gear motor), and determine the interaction between the two variables and determine the most optimal level of hardness. The method used in this study is the method of observation and literature on the fundamental theories, the sample used in this study is medium carbon steel (indopart gear motor) which is heat treated with a holding time of 60 minutes, 120 minutes and 180 minutes and with water, oil, diesel and air cooling media. Then hardness testing is done. Based on the results of the analysis of the data obtained there is a significant difference in the effect of the average cooling media on the level of violence, there is no significant difference in the effect on the average hardness between the holding time, there is a difference in the effect of the interaction between the holding time and the cooling media. The optimal treatment process is where the holding time is for 180 minutes using water media.