bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fire disaster early detection system in residential areas
Authors: Kamelia L , Ismail N , Firmansyah A A 
Published: December 2019

Abstract
The number of residential fires in urban areas is increasing every year. The use of automatic fire detection technology can prevent greater fire disaster losses. The fire detection system works by detecting increasing degrees of heat, ultraviolet radiation by flames, and gas leaks. The system will start automation if the LM35 Temperature sensor, MQ2 Gas sensor, and Light Dependent Resistor (LDR) detect the occurrence of fire according to the initial settings on Arduino Uno. After Arduino Uno processes input data from the sensor, there will be a notification marked with the Buzzer and a text will appear on the Liquid Crystal Display (LCD) that describes the condition of the sensor reading. Arduino Uno configures data via the GSM SIM900A Module. The last process is sending short messages (SMS) from the GSM SIM900A Module to the receiver to notify the initial warning of a fire. the delay time in testing the farthest distance (100 cm) is as follows: LM35 140 second Temperature Sensor, 130 second MQ2 Gas Sensor and LDR 145 seconds.
Study of LoRa (Long Range) communication for monitoring of a ship electrical system
Authors: Setiawan B , Putra E S , Siradjuddin I , Junus M , Dewatama D , Wiyanto S 
Published: December 2019

Abstract
This paper presents a study of long range (LoRa) communication for monitoring of a ship electrical system. Three categories of electrical system include generator, power distribution, and navigation are monitored. A low power communication technology of LoRa is used to transmit electrical variables such as current, voltage, and power are logged and sent to the server. Experiments using LoRa SX1278 and Arduino have been inducted to validate the performance of the communication. Three spreading factors 12, 7, 6 have been tested. From experiments results, the performance of the communication has been analysed, if has been found that 97% successful data transmission was achieved with maximum distance. Furthermore, small baud rate communication was more suitable for the application.
A study of a discrete Bayes and a Kalman filter computational Complexity and performance in the case of 1D robot localization
Authors: Siradjuddin I , Fitriani I M , Asmara R A , Junus M , Patma T S , Azhar G A , Setiawan H 
Published: December 2019

Abstract
In the robotic field of study, localization is one of the important methods for autonomous mobile robot navigation. Probabilistic approaches have received significant attention in the robotics community. The discrete Bayes and Kalman filters are the fundamental algorithms in probabilistic approach which have to be clearly understood in order to develop more advanced filtering algorithms. This paper discusses discrete Bayes and Kalman filtering algorithms. The mathematical representation of each filter algorithm, in the 1-dimensional case, presented in detail. The algorithms were implemented using python to simulate the probability of the robot position. The algorithm’s complexity was analysed with respect to the computational cost and size of memory used. From this study, it has been observed that the Kalman filter is computationally more efficient, and less memory is required.
Design of two stage low noise amplifier at 2.4 - 2.5 GHz frequency using microstrip line matching network method
Authors: Maruddani B , Ma’sum M , Sandi E , Taryana Y , Daniati T , Dara W 
Published: December 2019

Abstract
This study aims to design a Low Noise Amplifier (LNA) with two-stage cascade configuration at frequency of 2.4 -2.5 GHz. The transistor that used in this study has characteristic of high gain and low noise. The design is using microstrip line matching network with single stub technique to minimize parasitic effects. Transistor is using cascade configuration to produce high gain and improve the stability. The simulation results show that the LNA has reached all of expected specification at frequency of 2.45 GHz where S21, NF, S11, S22 are 30.693 dB, 1.248 dB, -70.358 dB and -72.982 dB, respectively; Also other values VSWR input, VSWR output, stability (K), input impedance and output impedance at 50Ω are 1.001, 1.0004, 5.280, 50.010 + j0.029 and 49.991 + j0.02, respectively. The measurement results show that at frequency of 2.45 GHz, LNA obtained value of S21, S11, S22, VSWR input, VSWR output are 22.17 dB, -4.117 dB, -13.049 dB, 4.297 and 1.572, respectively. Whereas, the best measurement of S21 is 24,05 dB at frequency of 2.05 GHz), S11 is -5.700 dB at frequency of 2.0 GHz, S22 is -27.570 dB at frequency of 2.045 GHz, VSWR input is 3.07 at frequency of 2,0 GHz and VSWR output is 1,09 at frequency of 2.045 GHz.
Design of substrate integrated waveguide to improve antenna performances for 5G mobile communication application
Authors: Sandi E , Diamah A , Iqbal M W , Fajriah D N 
Published: December 2019

Abstract
In this paper, a new design of substrate integrated waveguide was developed to improve the gain performance of microstrip antennas for 5G antenna applications. The antenna and substrate integrated waveguide ware designed at the frequency 28 GHz millimeter-wave band. The design of substrate integrated waveguide was developed by design an H-slot structure without a gap in the substrate layer to provide better matching impedance and reduce the loss of surface wave microstrip antenna. This study was conducted with a research and development approach through the calculation of the H-slot structure on substrate integrated waveguide and simulated by using antenna design software simulation. The numerical result shows that the new design approach for the H-slot structure without gap model was improved antenna gain and antenna size. This result has shown significant improvement compared to the circular antenna design without substrate integrated waveguide.
Feasibility study of installation photovoltaic system at a university in Indonesia: A case study
Authors: Umar H , Amudy M , Rizal T A 
Published: December 2019

Abstract
Universitas Samudra (UNSAM) is one of the new state universities in Indonesia, located in Langsa City, Aceh Province. The masterplan for developing UNSAM projected to expanding access to higher education for secondary school graduates in the province by increasing the capacity through the construction of new buildings. The plan to construct green buildings inside the campus complex is simply an effort to achieve the UNSAM mission, which is, to become a green campus. There are nine buildings on the UNSAM campus with a total roof area reaching 11,232 m2, which is structurally suitable for solar photovoltaic installation. In Langsa City, for one year, the average exposure to sunlight is equivalent to about 7,860 hours. The average annual insulation at this location is around 5.0 to 6.5 kWh / m2 / day. This study focuses on the economic feasibility of solar photovoltaic systems on the UNSAM campus. Electricity production costs, which might have economic benefits, are obtained for Rp. 1, 990 / kWh. The results of the analysis concluded that the economic potential of installing a PV system is very dependent on the geography of the building and the direction of PV installation.
Thermodynamic performance investigation of a diesel engine running on biodiesel derived from pangium edule and cocos nucifera
Authors: Rizal T A , Hamdani H , Thaib R , Khairil K , Husin H , Mahidin M 
Published: December 2019

Abstract
This study investigates the use of biodiesel derived from Pangium Edule Reinw (Pangium biodiesel) and Cocos Nucifera (palm biodiesel) in diesel engines as alternative fuels. A direct injection (DI) diesel engine simulated via a thermodynamic cycle model for investigation. Thermodynamic and performance parameters and compared for diesel, Pangium biodiesel, and palm biodiesel fuels at two different states. The results displayed that Pangium biodiesel shows a relatively higher cylinder temperature and pressure compared to palm biodiesel and diesel fuel at a lower crank angle. It also means that 100 % biodiesel is capable of performing a smaller engine capacity compared to diesel fuel at similar injection conditions. The brake power declines about 8.1% and 8.3% at 3800 rpm, while brake specific fuel consumption increases about 8.7% and 9.4% at 1900 rpm for Pangium biodiesel and palm biodiesel, respectively. The engine performance for Pangium biodiesel and palm biodiesel significantly improve at the same equivalence ratio condition. However, a more amount of fuel is required, which is approximately 20.7% for palm biodiesel and 8.5% for Pangium biodiesel. The brake thermal efficiency for Pangium biodiesel and palm biodiesel is generally better than diesel fuel.
Preliminary study of acidic hydrolysis in third generation bioethanol production using green algae
Authors: Yheni M , Theofany H C , Aditiya H B , Sepwin N S 
Published: December 2019

Abstract
In a mission to reduce the world’s dependency on non-renewable energy sources, through decades, researches are striving to find the best alternative energy substitutions. Considering the abundance availability of renewable sources, green algae are discovered as one promising candidate of future energy alternative. The aim of this research is to study the bioethanol production from green algae through acid hydrolysis. In this study, the acid hydrolysis was performed by utilizing hydrochloric acid (HCl) at concentration range of 0.5M-2.5M. Further, hydrolysis temperature was also varied at 50, 70 and 90°C. In this stage, a fixed hydrolysis period was set for 30 minutes. As acid pre-treatment is considered in this study as an effective way to convert carbohydrates into fermentable sugars, the sugars produced in this experiment would lead to an excellent grade of bioethanol produced. From the obtained result, green algae show a feasibly potential as the third-generation bioethanol feedstock. The highest theoretical ethanol value obtained by performing 2.5M of HCl at 90°C during retention time of 30 minutes.
A comparative investigation of biomass pyrolysis on connecting tube performance for liquid smoke production
Authors: Saputro H , Evan B , Liana D N , Karsa B S , Wijayanto D S , Bugis H 
Published: December 2019

Abstract
Currently, optimizations of biomass pyrolysis processes become an exciting topic. This is due to the increasing requirement of energy. This study focuses on the optimization pyrolysis process of solid waste of palm starch that became an environmental problem. The objectives of this study are to optimize the pyrolysis process of palm starch waste, especially liquid smoke product. The optimization of the liquid smoke product had conducted through the modification of connecting-tube between pyrolysis reactor and condenser. The connecting tube has differences in diameter, length, and material. The results of the study show variations in size and type of tube affect the product yield of the pyrolysis process. Stainless-steel pipes have better performance to produce liquid-smoke. The shorter the length of the pipe increases the quantity of liquid-smoke, but the smaller the diameter of the pipe decreases the quantity of liquid-smoke. This paper discusses in more detail the comparison of the performance of connecting tube by modifying the type of material, the length, and the diameter of the pipe.
Clay stabilizer and zetpass uses for improving sand control performance and resist the sand problem at field x based on laboratory study
Authors: Ruseno H S , Kasmungin S , Setiati R 
Published: December 2019

Abstract
This field X well production has indeed occurred in the sand and this well has been carried out with water flooding with injection water that is currently available. In this study of sand problems, it is intended to find out the cause of the problem of sandiness in terms of laboratory analysis of formation rock samples and injection fluid. Laboratory analysis consists of fluid characterization, rock characterization that is specifically assigned to rock minerals (SEM and XRD), and fluid injection compatibility tests with rocks, then a sand retention test is performed. After the addition of clay stabilizer in injection water, Zone A, Zone B and Zone C have increased apparent permeability to reach an interval of 500% -1000% mD. The use of Zetpass cannot be used in zone A because there is a lot of clay and the grain is very fine, but it can be used in zones B and C. Fluid interactions with rock minerals and chemical interactions will reduce the cementation of rocks so that they can trigger the occurrence of sand. Clay stabilizer is important to note in wells that have done water flooding. ZetPass solution is able to become sand control but has limitations. The ZetPas solution is able to become sand control but has limitations, where if it is applied to a reservoir that has a significant composition of clay minerals (smectite, illlite and chloride), the performance will decrease.
Readability of geothermal energy information in vocational textbooks
Authors: Wahyudi W , Pambudi N A , Biddinika M K , Ranto R , Rudiyanto B 
Published: December 2019

Abstract
The development of renewable energy in a country is influenced by public understanding by its people and this understanding is influenced by public literacy. To improve this, effort is needed to increase the level public literacy by improving readability. We study the readability of geothermal energy in vocational high school textbooks written in Indonesian. This is conducted because it is considered to have an effect on the low utilization ratio in the country. This readability research uses survey methods with population is student in vocational high school. Text material is read by the respondent and they are asked to give the impression whether the text is easy or difficult to understand. From this study, the factors that influence the ability to understand text information are displayed. The purpose of this study is to improve geothermal energy literacy, there for the application and development of this energy increase in the future.
The attitude of local government officers toward renewable energy in Indonesia
Authors: Pujaningrum I D , Pambudi N A , Biddinika M K , Saputro H 
Published: December 2019

Abstract
One of the causes of climate change is the use of fossil fuels. therefore, this triggers efforts to use renewable energy as a substitute fuel. According to REN21 data the development of renewable energy has declined from 2011-2016 along with the world’s energy needs. This issue is triggered, one of which is the policymaking of budget policies from several countries in the world, including in Indonesia. In this context, policy and government are the main components of implementing renewable energy. Therefore, the government’s attitude towards renewable energy plays an important role in the success of developing renewable energy. We conducted a survey to explore the attitude of the local government to the potential of renewable energy in Indonesia which has the potential to vary from each region. One area may have more renewable energy potential than the other. The results of this quantitative study are expected to help national policies on the development of renewable energy not only in Indonesia, but also in other countries where the diversity of opportunities spread throughout the region.
Work based learning in vocational education
Authors: Hafid D , Djohar A , Abdullah A G , Komaro M 
Published: December 2019

Abstract
This research conducted to analyse the application of work-based learning models that are being carried out in vocational school (SMK). The scope of this research relates to the framework used, weaknesses, strengths and characteristics of industrial involvement in the education process. This research was conducted by survey method, namely by directly observing the work-based learning process, with data obtained from the results of observations, interviews and literature studies from the program implementation manual. The object of his research is a school that carries out a work-based learning model in West Java, among others, Bandung Vocational High School with the name Toyota Technician Education Program (T-TEP) and ASTRA Motor Guidance, 2 Subang Vocational School with the name Teaching Factory program, and Lemah Abang Vocational High School under the name of the Yamaha Fostered Class Program. From the results of this research, it was found that the three schools that applied work-based learning models had their respective characteristics, and had their respective weaknesses and strengths, but from the three schools there was one similarity, namely using framework synchronization, namely the curriculum arranged based on synchronization between compulsory competencies in school with industry competencies.
Structure and magneticproperties of barium hexaferrite BaFe10CoNiO19 films
Authors: Sugihartono I , Rembulan I A , Rakhmawati D , Marpaung M A , Handoko E 
Published: December 2019

Abstract
We prepared Co-Ni doped BaFe10CoNiO19 films on the quartz glass substrates by ultrasonic spray pyrolysis with different molarities. The precursor was prepared by dissolving barium nitrate (Ba(NO3)2), iron nitrate (Fe(NO3)3.9H2O), cobalt nitrate (Co(NO3)2.6H2O), nickel sulfate (Ni2SO4.7H2O) in 50 mL of distilled water. Precursor solution was sprayed onto the cleaned quartz plates previously heated to 150 – 200°C, using a sprayer and argon as carrier gas. For crystallization the films were annealed in a furnace at a temperature 1000°C for3 hour in atmosphere ambient. By scanning electron microscopy (SEM), the barium hexaferrite BaFe10CoNiO19 films shows agglomeration and the average diameter of particles less than1 μm. We believed, the structure of barium hexaferrite BaFe10CoNiO19 films change due to Co-Ni existence. Therefore, the magnetic properties deteriorate by incorporation of Co-Ni into the structure of barium hexaferrite BaFe10CoNiO19.
Scaffolding in conceptual science
Authors: Isrokatun I , Anggita D , Purwono B S , Sunaengsih C , Syahid A A 
Published: December 2019

Abstract
Scaffolding is a technique developed to improve learning activity. The technique was designed to help students noticing their goals and to provide support for the students’ needs. It is important to realize that each student has their own development tempo or Zone Proximal Development (ZPD). Therefore, every teacher is required to be able to provide teaching in accordance with each student’s ZPD. This individual difference will affect student’s method of learning and its result. In this case, this study employed a descriptive-qualitative method in order to describe the implementation of scaffolding in Situation-Based Learning (SBL). The respondents of this study were the fifth-grade elementary school students (10-12 years old) who studied the concept of Force. It was found that scaffolding technique that was optimally provided by teacher could improve students learning activity in understanding the concept. To conclude, it was revealed that learning activity using scaffolding could improve students’ learning result.
REACT digital and manual worksheet for enhancing physics problem solving skill
Authors: Suhendi H Y , Jamilah N , Mulhayatiah D , Ardiansyah R 
Published: December 2019

Abstract
This study aims to find out the comparison of students’ problem-solving abilities in harmonic vibration material between students who use REACT- digital and manual worksheets. The method used is quasi-experiment with the research sample taken from two classes totalling 60 students of Islamic schools. The results showed that there were no differences in problem-solving abilities between students who learned using REACT-digital and worksheets and those using REACT- manual worksheets, this happens because during the learning process the teacher uses the same supporting tools, namely student worksheet based on REACT. The implication of this study is problem solving ability can be obtained by learning using REACT digital and manual worksheets.
Effects of variations in the addition of SiCp filler to corrosion rate of metal matrix composites (MMCs) Al-Cu-Mg/SiCp
Authors: Susila A B , Handoko E , Fahdiran R 
Published: December 2019

Abstract
We study of effecs Al-Cu-Mg/SiCp Metal Matrix Composites (MMCs) with a matrix composition of 4.4 wt% Cu, 1.8 wt% Mg with SiCp fillers were varied (3.4; 3.7 and 4.0) wt% and the remaining Al. SiCp is mixed into Al-Cu-Mg heated at 900oC, then stir casting is carried out at 250 rpm for 10 minutes. Then cooling is carried out to room temperature. After cold, heat treatment is given and continued testing. The SEM-EDX and XRD test results showed that the increasing SiCp content, the tendency for SiCp and Mg bonds to form the Mg2Si phase increased, making the sample items enlarge and appear coarser. While the corrosion rate test of increasing SiCp in the Al-Cu-Mg matrix makes Al-Cu-Mg/SiCp samples tend to be more corrosion resistant. The event of declining corrosive properties is due to SiCp particles occupying grain boundary areas replacing O2 (which provides corrosive properties) that are trapped in the sample during the cooling process.
Physics in geothermal power plants
Authors: Nasrudin D , Nopilawati D , Rochman C , Rahayu Y N , Millah M F , Mulhayatiah D 
Published: December 2019

Abstract
Many students dont like physics because they feel far away from physics. Therefore physics must be made closer to students through contextual physics. This paper wants to describe the physical concepts that exist in geothermal power plants. The method used is Research and Development (R & D) with the ADDIE model design. The results of the study show that there are many physics concepts that can be taught to students through observation and analysis of geothermal power plants such as the concepts of temperature, heat and displacement, electricity, energy and others. These physics concepts can be packaged in physics learning through the development of enrichment materials. It is hoped that there will be an increase in the mastery of concepts and literacy of students towards the surrounding natural resources.
The Simulation of one-time-pad quantum key distribution
Authors: Delina M , Iswanto B H , Permana H , Muhasyah S 
Published: December 2019

Abstract
The quantum key distribution provides a secure information exchange. The system employed a single photon as the messenger. In this study one-time pad (OTP) quantum key distribution provide a key which is use securely. For example, in a war. Therefore, it is not possible to share the secrete key in this condition, but the OTP can be generated several times as long as there is no eavesdropped detected. This paper discusses the simulation of a one-time pad quantum key distribution with event-by-event method.
Heat energy conversion on applied technology of geothermal energy direct utilization
Authors: Sumotarto U , Hendrasto F , Anugrahadi A 
Published: December 2019

Abstract
Indonesia has a high geothermal energy resource, preserved in many fields. But not all geothermal fields are potential for indirect utilizations such as for electric power generation. A direct utilization of a low potential geothermal energy resource has been performed at Batukuwung geothermal field, Serang, West Java. A simple design of vegetable grain dryer has been created and constructed using galvanized metal pipes. A reduction of temperature from 63,1 degrees Celsius at the heat source to 41,5 degrees Celsius at the dryer tool through galvanized metal pipes is quite adequate for vegetable grain drying purposes. It is quite a prospect simple technology to be applied and developed in Indonesia as a geothermal energy country having various vegetable grain products from various plants such as coffee, corn, peanut and many other tropical plantations.