bluuebunny/crossref_metadata_2025_split huggingface dataset:
Electronic state of sulfide-based alkali-ion conducting solid-state electrolytes applied to all- solid-state secondary batteries
Authors: Kowada Yoshiyuki , Akaki Yasukazu , Hayashi Akitoshi , Tatsumisago Masahiro 
Published: May 2020

Abstract
All-solid-state batteries are expected as the next generation secondary batteries for their higher energy density, in-flammable properties, and so on. In order to develop these batteries, there are several problems to improve. One of them is the lower ionic conductivities of the solid-state electrolyte. In order to improve the ionic conductivity, electronic states of the sulfide-based alkali-ion conducting solid-state electrolyte were calculated by the DV-Xα cluster method. The cluster models were constructed by the coordination number reported by experimental methods and the bond length estimated from the ionic radii of each ion. The movement of the cation was simulated by several model clusters with different positions of the moving ion. The relationship between ionic conductivity and the differential total bond overlap population (DBOP) of the moving ion was discussed for the sulfide-based solid-state electrolytes in the several different systems. In any cases, the smaller change of DBOP of the moving cations played an important role for the fast ion movement in the solid-state electrolytes. This bonding state of the moving cations is one of the characteristics of the electronic state in the sulfide-based solid-state electrolytes.
Interaction Analysis Application of Arduino Industrial Automation Trainer Based on Project to Improve Cognitive Ability and The Bodily-Kinesthetic Ability
Authors: Kartikawati S. , Nita S. 
Published: May 2020

Abstract
This research aims to determine the interaction/influence of the application of Arduino Industrial Automation trainer based on projects to enhance cognitive abilities and The Bodily-Kinesthetic abilities. college student This research is in the form of quantitative descriptive research. The sample used in this study is one class taken using Saturated Sampling techniques. The research class was treated by using a project-based Arduino Industrial Automation trainer. The independent variables in this study are project-based Arduino Industrial Automation trainer, while the dependent variable is cognitive abilities and The Bodily-Kinesthetic abilities.. There are 3 kinds of analysis techniques, namely instrument analysis techniques, prerequisite analysis techniques, and hypothesis analysis techniques. The measured research data are cognitive ability data and The Bodily-Kinesthetic ability data. The analysis of the hypothesis test of this study used the T-Test with a significance level of 5%. T-Test Criteria are as follows, Ho is accepted / H1 is rejected if T count is smaller than T table and Ho is rejected / H1 is accepted if T count is greater than T table. From the results of the instrumenT-test, namely the validation test, there are 75% questions stated valid. For the prerequisite test for the normality of cognitive abilities and The Bodily-Kinesthetic abilities on the pretest and posttest obtained L count < L table means the sample is normally distributed. For the prerequisite test for homogeneity of cognitive abilities and The Bodily-Kinesthetic abilities obtained F count < F table means the sample is homogeneous. The results of the T-test for the first dependent variable cognitive ability obtained T count = 24.41 and T table = 1.697, because T count is greater than T table then Ho1 is rejected, meaning that there is an interaction/influence of the implementation of the Arduino Industrial Automation trainer based on projects in improving cognitive abilities. While the results of the T-test for the dependent variable The Bodily-Kinesthetic ability obtained T count = 18.33 with T table = 1.697, because T count is greater than T table then Ho2 is rejected, it means that there is an interaction/influence of the application of the Arduino Industrial Automation trainer based on the project in increasing The Bodily-Kinesthetic abilities. So that it can be concluded that there is an interaction/influence of the application of the Arduino Industrial Automation trainer based on projects in improving cognitive abilities and The Bodily-Kinesthetic abilities.
Analysis Of The Impact Narrative Algorithm Method, Pseudocode And Flowchart Towards Students Understanding Of The Programming Algorithm Courses
Authors: Nita Sekreningsih , Kartikawati Sulistyaning 
Published: May 2020

Abstract
The definition of an algorithm is to describe a problem into a sequence of systematic steps in solving problems. Arranging the algorithm in sequence from beginning to end so that it can solve the problem. The results of the implementation of the algorithm are programs. So the purpose of making an algorithm is to facilitate the making of the program. There are 2 types of algorithms, 1) Text (narration and pseudocode), 2) Visual / image (flowchart). Comparison between the two, students understand it which is higher between the text or visual model. This study aims to see how much infuence the value of students understands the algorithm in text or in an image. In conclusion, students are easier to understand the types of algorithms in an image. The test uses the Paired Sample T test, with a 5% significance level obtained value = 0.05. This means that the t count is greater than t table of 2.06390 and P Value (0,06211 > 0,05) or T-stat smaller than T-critical two tile, it means H1 can be accepted or T-count < T-table (-1,95597<2,06390), so H0 can be accepted.
The Effect Of Decomposer Microorganism Additions On The Natural Hydroponic Technology (Nht) Systems Of Pakchoy Growth
Authors: Nugroho Ary Susatyo , Susatya Dewi Endah Rita , Dzakiy Muhammad Anas 
Published: May 2020

AbstractNowadays there is a tendency of the people, especially the middle class and above, to choose vegetables with high quality and safe for body. Therefore, farmers are required to always innovate in terms of vegetable cultivation, so that the crops can compete and be accepted by the community. This study aims to determine the effect of the addition of decomposer microorganisms on the Natural Hydroponic Technology (NHT) system on the growth of Pakchoy plants. The study was conducted on May to July 2019 in the agricultural land of Ngesrep Balong Village, Limbangan District, Kendal Regency, Central Java. This study uses a completely randomized design (CRD) with one treatment factor, the type of decomposer microorganisms. The research data was taken through several measurement techniques and direct observation of objects. Data were taken three times on the 14th day, 21stday, and 28thday after planting. Data were then analyzed statistically with ANOVA (Analysys of Variance) at 95% confidence level and continued with LSD test. The analysis shows that the addition of decomposer microorganisms to the Natural Hydroponic Technology (NHT) system can increase the growth rate of Pakchoy plants. Decomposer microorganisms with trademarks ST (Sukses Tani) and EM-4 (Effective Microorganism-4) produce the same growth rate.
Geometry and Stability of Small Gold Cluster Ions by Graph Theory and Hückel model
Authors: Sekine Rika , Kasai Takashi , Furuta Eri , Okakura Masaya 
Published: May 2020

Abstract
Structure and stability of the gold cluster ions of which skeleton are synthesized as a complex were analyzed using the Hückel method based on graph theory. Hückel Energy (HE) and Topological Resonance Energy (TRE) were determined for neutral, positive ion, and negative ion clusters, where all the isomers of the gold cluster up to octamer were considered. Since some graphically designed isomers include bonds that cannot be realized in three- dimensional space, the screening was carried out by a molecular force field calculation with LAMMPS (lammps.sandia.gov/.). Among the isomers thus obtained, both HE and TRE were most stable when the tetramer was Au4
2 + with a tetrahedral structure, and with the hexamer, Au6
2+ with two tetrahedrons sharing one side. The complexes with these structures have actually been synthesized. On the other hand, the synthesis example of the most stable cluster for octamer Au8 has not been reported.
Text Mining Pre-Processing Using Gata Framework and RapidMiner for Indonesian Sentiment Analysis
Authors: Kurniawan S , Gata W , Puspitawati D A , Parthama I K S , Setiawan H , Hartini S 
Published: May 2020

Abstract
Research in the field of Text Mining in general still uses text in English, Arabic, China or others language, while for text in Indonesian is still very limited, so it requires good tools to help Indonesian researchers to conduct research in the field of text mining in Indonesian. Pre-processing is needed for text mining processes such as deleting notation ‘@’, ‘http’ removal, Indonesian stopwords, normalizing acronym, slang words, emoticons, and Indonesian stemming. The GATA Framework Text Mining provided is one of the options for conducting text mining research in Indonesian and has been used by several researchers. There are several known data mining processing methods, including KKD, CRISP-DM, and SEMMA, all three of which are quite reliable methods. CRISP-DM which consists of; Bussiness Understanding, Data Understanding, Data Preparation, Modeling, Evaluation, and Deployment is a method that is quite widely used in research in the field of text mining which can be combined with text pre-processing. With so much research in the field of Text Mining in Indonesian, the need for pre-processing in Indonesian is very important. GATA Framework is an option for pre-processing devices that can be combined with Repidminer devices, as seen from the results of the excellent FUPRS.
Ability estimation in computerized adaptive test using Mamdani Fuzzy Inference System
Authors: Ridwan W , Wiranto I , Dako R D R 
Published: May 2020

Abstract
Assessment is an activity to find out the learning outcomes of a course. Conventionally, assessment is done using a pencil and paper test. Along with the development of information and communication technology, evaluation can be done computerized, known as Computer Based Test (CBT). The Computerized Adaptive Test (CAT) is one form of CBT where the items given are chosen based on the students’ abilities. This research aims to design a system that can estimate the ability of students based on the parameters of the questions and answers given. The estimation method uses the Mamdani Fuzzy Inference System (MFIS). The input MFIS is a level of difficulty and discrimination of the questions, the probability of students being able to answer correctly, and the student’s answer, while the output is an ability estimated. Based on this fuzzy system output, the next item questions will be determined according to the ability of the students. 24 IF-THEN rules are used for fuzzy systems. CAT simulations are carried out for Linear Algebra Course with six topics, namely vector, matrices concepts, matrices operation, determinant, inverse, and matrices applications. The type of question given is multiple choice. Giving items will be stopped if the value of the estimated ability of the students has not changed. From the simulations carried out, for each topic, the ability of the student can be acquired with the number of questions as many as six questions. So that the CAT system can minimize the time of the exam, reduce the subjectivity of the assessment and can arrange for each student to get the questions according to his abilities.
Seawater distillation using vacuum pumps and ultraviolet lights to improve desalination process and freshwater quality
Authors: Rosyad M S , Ramadhani S , Riski I , Sutanto H , Wahyono Y , Indrawan W 
Published: May 2020

Abstract
Lack of clean water supply quantitatively because of 97% water in earth is seawater with 35% salinity. One effort that can be done to overcome the clean water crisis is through desalination of seawater to produce water with low salinity. Some of the desalination methods that ever existed were MSF (Multi Stage Flash Distillation) and Reverse Osmosis. However, both of these methods have high investment cost. Therefore, a cheaper and easier method to apply such as distillation is required. In this research, distillation system is made of stainless steel and aluminium combined with vacuum pumps and ultraviolet lights. The use vacuum pump can speed up the evaporation process of seawater. Ultraviolet lights function to degrade heavy metal pollutants and eliminate harmful bacteria. Tests carried out include evaporation rate and water quality. This technology can increase water productivity up to 2 times and water quality shows a decrease in some pollutant parameters including 99.7% TDS, 99.93% salinity, 100% total coliform, and heavy metals Fe of 96,1%, Cr of 90.33% and Zn of 98,9%, and pH of seawater being neutral from 7.5 to 6.9. The technology has the potential to be applied to the community.
Reactive power injection at the North Makassar distribution system with D-STATCOM
Authors: Muslimin Z , Suyuti A , Palantei E , Indrabayu I , Gunadin I C 
Published: May 2020

Abstract
The need for electrical energy is increasing in line with the growth of population. As consequences of high demand, electrical power network is also extended massively. A wider distance between the power generator to far load centers also consider as drawback in performances due to power loss along the transmission. The problem of power loss and voltage drop in the distribution system can be solved by installing DSTATCOM. This paper aims at finding the effect of DSTATCOM installation on real power losses and reactive power, as well as its effect on voltage profiles on the North Makassar Distribution System. The simulation results show that by installing DSTATCOM on 92 Bus North Makassar Distribution System on several buses, increasing of performances can be achieved. The average active power loss decreased by 2.5%, declining of the reactive power loss averaged 26.7% and the average voltage profile improved by 0.12% (2.5 kV).
Analysis of use and need of sectoral electrical power and energy in West Java Region
Authors: Sucita T , Mulyadi Y 
Published: May 2020

Abstract
The current and future usage and power needs of electricity are important in electricity utilities. This study aims to predict the amount of power and electricity usage and demand from various sectors in order to be used as a reference and an overview of the amount of sectoral load and electrical energy needs in the West Java region in the future. The method for determining the estimated electrical load and energy requirements can be calculated by a combined method (analytical, econometric and trend) and a simple linear regression method with a sectoral approach by grouping customers into five sectors (household, business, industrial, general and social). The findings of the study using the combined method of the percentage of the amount of power connected by 5.46% with an error of 4.42%, and the amount of energy sold at 4.78% with an error of 4.49%. Whereas by using the regression method the percentage of total connected power is 5.27% with an error of 3.54%, and the amount of energy sold is 4.24% with an error of 3.98%. By doing these forecasts it is hoped that the future electricity needs can be met.
IoT scheme for surveillance system and laboratory security access
Authors: Fushshilat I , Yogasmana Y 
Published: May 2020

Abstract
This paper proposes to design a modern surveillance system and laboratory access using digital technology, through the concept of the Internet of Things (IoT) which is becoming one of the trending topics in the development of world technology nowadays. IoT makes several electronic devices such as actuators, biometric sensors, RFID Reader, servers, and IP cameras are connected to an Internet network. Thus, those devices can be accessed anytime anywhere outside laboratory. identification of visitors are using RFID cards or biometrics sign such as fingerprints or faces that have been recognized by the system and every time visitors come to laboratory, they are recorded directly into the server automatically, IP camera allows displaying in real-time condition of the Laboratory, The system is utilizing the indoor sound system as a device for conducting teleconferences and appealing for information to visitors to the laboratory remotely via the internet, all of these are very useful for establishing a better security and surveillance system and facilitating work of laboratory administrators.
Design and fabrication of double layer bowtie antenna with modification of wing edge as UHF sensor for partial discharge detection in air insulation
Authors: Uwiringiyimana J P , Khayam U 
Published: May 2020

Abstract
Partial discharge (PD) has been used as a reliable diagnostic technique for High voltage equipment. UHF methods have been widely applied for the detection of electromagnetic waves emitted from PD source in High Voltage equipment. EM wave propagation produced by PD can be detected by using UHF sensors. This paper discusses the new design of double layer bowtie antenna with modification of the wing edge of the antenna as a UHF sensor for PD detection in air insulation. The double layer bowtie antenna was designed by using FR4-epoxy substrate type and later on printed on PCB. The 3D-HFSS software was used to design the bowtie antenna. Based on simulation results of double layer bowtie antenna, the optimum design for PD measurement was obtained with a minimum return loss (RL) of -34.7 dB, the bandwidth of 560 MHz, and Voltage Standing Wave Ratio (VSWR) of 1.03. Based on the measurement results for the designed bowtie antenna by using the Vector Network Analyser (VNA), the bowtie antenna has a return loss of -14 dB, the bandwidth of 555 MHz, and VSWR of 1.05. The designed UHF double layer bowtie antenna is capable of detecting PD in UHF range since PD signal have a frequency range of 300 MHz - 3 GHz.
Gateway system for portable finger scanners
Authors: Nugraha T P , Wahyudin D 
Published: May 2020

Abstract
The attendance system serves as authentic proof of someone’s presence, in this instance the system is meant to account for lecturer’s presence. The current portable finger scanner attendance tool used does not yet have a system for processing data. The purpose of this study is to create a system that is able to receive, process and store data that has been sent by a portable finger scanner. The method carried out in this study was an experiment including designing hardware, software, and testing tools. The trial results show that the tool runs in accordance with the planned specifications. Data can be received through LoRa, stored in the database, and then converted into Excel format. Each mode is able to function properly, the planned distance of acceptance is achieved, and the final purpose of designing the tool is fulfilled.
A low-cost Holter monitor design equipped with external memory and Bluetooth connection
Authors: Nofitasari D , Wisana I D G H , Triwiyanto T , Setioningsih E D , Mak’ruf M R , Nugraha P C 
Published: May 2020

Abstract
Monitoring the heart activity is critical for a patient with heart disease. Twenty-hour detecting of the ECG signal will help the clinician to diagnose the hearth. This device is usually called a Holter monitor. However, the price of this device is very expensive, therefore the development of a Holter is required. The purpose of this study is to develop a portable and low-cost Holter system to record the ECG signal in twenty-four hours. The mainboard is composed of a pre-amplifier, bandpass filter, notch filter, summing amplifier, Arduino microcontroller, SD Card Memory, and a Bluetooth transmitter. ECG signal is collected from the body based on the standard measurement of LEAD II. The ECG signal is sampled with a frequency sampling of 200 Hz. To record the raw data of the ECG signal, the SD Card Memory was used to save the data for further data analysis. Calibration was conducted by using an ECG phantom. The calibration was performed in order to make this design to be a standard ECG machine. The design was also equipped with a Bluetooth transmitter to transmit the data to the computer. The total price to develop this device is 460,000 IDR. After the evaluation, the BPM error of this Holter is ±0.0273% and the Holter able to operate in 24 hours. The developed ECG Holter is portable in dimension and low cost to be fabricated for mass production to help people with heart disease.
Implementation of cuckoo search algorithm for support vector machine parameters optimization in pre collision warning
Authors: Puspaningrum A , Suheryadi A , Sumarudin A 
Published: May 2020

Abstract
Nowadays, pre-collision warning is one of the substantial aspects of the transportation sector. One of the steps to detect the collisions is by classifying and predicting the collisions. There are many supervised machine learning algorithms used, such as Least Square – Support Vector Machine (LS-SVM). Radial Based Function (RBF) is one of the LS-SVM kernels, which is a well-known method to support reliable performance. However, C and Gamma of its parameters are chosen randomly. This makes the performance of the classifier less optimal. To overcome that problem, this paper proposed a cuckoo search algorithm for optimizing two parameters to get optimal accuracy. The proposed approach is applied to 8437 transportation records and evaluated by using Accuracy. In addition, the performance of the proposed method is compared to other well-known meta-heuristic optimization algorithms, namely: Bat Algorithm (BA-SVM) and Firefly Algorithm (FA-SVM). Experimental results show that the Cuckoo Search Algorithm (CSA-SVM) yields the best performance for each of the 10-folds cross-validation by reaching 84.817% for accuracy, compared to the Bat Algorithm and Firefly Algorithm.
Investigation of characteristics of bamboo fiber for composite structures
Authors: Martijanti M , Juwono A L , Sutarno S 
Published: May 2020

Abstract
Bamboo fibers have been used for reinforcements in structural composites because of their environmental friendly properties. The purpose of this study was to investigate the characteristics of three types of bamboo, namely Tali bamboo, Gombong bamboo and Haur Hejo bamboo to meet the requirements for a reinforcement in structural composites. The three types of bamboo fibers were alkaline treated by varying the concentrations of NaOH (4% and 6%), and immersion times (1, 2, and 3 hours). The alkaline pre-treatment was conducted at the temperature of 120°C and the pressure of 0.5 MPa using a steam explosion method. The treated bamboo fibers were characterized by FTIR and measured their tensile strengths. The tensile test results showed that the tensile strengths of Tali, Gombong, and Haur Hejo bamboss were 710 MPa, 418 MPa, and 457 MPa respectively. Whereas, the FTIR analysis indicated that there was still a peak of lignin with small intensity marked by aromatic C = C (alkyne) at the wavelength of 1500-2600 cm−1 for all types of bamboo. There was also a peak of cellulose with an increase in the intensity marked by the aromatic group C = H (alkene) at the wavelength of 1900-2400.