bluuebunny/crossref_metadata_2025 huggingface dataset:
Designing website for online business in the agricultural sector
Authors: Warlina L , Siddiq F F , Valentina T
Published: December 2019

The purpose of this research is to discuss designing a website for agriculture so that it can help with every process in marketing in the agricultural sector. The method used in this study was a descriptive method to help describe the entire picture to be easier to understand, supported by several references related to websites and online businesses from several journals and books. The results of this study are a website to improve and win the business competition as a field of promotion and sales of production. In the process of using e-commerce buying and selling activities or more efficient marketing where the use of e-commerce will show the ease of promotion, transactions, cost reduction, and speed up the transaction process.
Design of web-based goods ordering information system in manufacturing companies
Authors: Azhuri F P , Aria M , Hermawan Y A
Published: December 2019

The purpose of this study is to describe the design of information systems for ordering goods in manufacturing companies and can facilitate the company’s operations, especially in marketing products to customers. The method used in this paper uses a descriptive method, a method that presents a complete picture of the situation related to several variable situations that are examined. The results of the design and research show that a web-based goods ordering system is useful to help customers order items without having to come directly to a manufacturing workshop. This research was conducted by discussing the system of procurement of goods, processing of goods and shipping of goods carried out by the company using its website service.
Security camera design using smart phones
Authors: Ramadhan Y , Hartono R , Hermawan Y A
Published: December 2019

The purpose of this study is to identify the importance of using information technology for security, especially for supervision. The method used in this research is a descriptive method, describing the function of using smartphones as a security tool. The results of this study that smartphones can be used as a security tool by using a cellphone camera as a surveillance camera and wireless computer network. This research was carried out with the results of analysis and experiments using previous references and supporting equipment. From the results of this study, it can be found that smartphones can be utilized as security systems. Therefore, the results of this study can be utilized by various parties or can be used as a reference in the use of technology and information.
Hybrid multiple criteria decision and fuzzy c-means for procurement
Authors: Mulyana E , Jumadi J , Bayu A , Wahana A
Published: December 2019

Determining the needs of each item of a product that has many types is something that is difficult to do if done manually. If this happens it will be a problem in decision making by management. As experienced by Cileunyi Collection Store where as of October 2018 the number of goods reached 2,469 types / Stock Keeping Units. (SKU). Production staff find it difficult to analyse how much production needs of each item so influence management decision-making in determining capital decisions and storage space that must be allocated. In this study will be explained the proposed decision support system in the form software application to assist the process of grouping goods and provide recommendations for the procurement of goods based on predetermined criteria in the Cileunyi Collection Store. Two algorithmic approaches, Multiple Decision-Making Criteria (MCDM) and Fuzzy C-Mean (FCM) are used. The MCDM algorithm is used to determine the order or priority in multi-criteria analysis and the FCM algorithm is used to group with the same membership. The Main result of the research is to present that the MCDM and FCM algorithm can provide recommendations for the procurement of goods with various specified criteria. The testing results shows that both of MCDM and FCM algorithm reached 90%.
The introduction of solar system using augmented reality technology
Authors: Tresnawati D , Fatimah D D S , Rayahu S
Published: December 2019

Current technological developments have had a huge impact on education, one of which is Augmented Reality technology. In this study, innovative and alternative media learning was made to understand the types of planets in the solar system. The solar system is one of the materials in natural science subjects in elementary schools. This media learning combines picture cards and virtual reality. Markers found on the card will be captured by the camera of the mobile device, processed and animated pieces will appear on the mobile screen in real-time. By using the concept of combining the real world, real images on the card and virtual, the application can stimulate imagination and a sense of desire and motivation to learn more and more. Planet estimates are made using the 3D Blender application, and the Augmented Reader process is created using Unity and Vuforia Software Development Kit. Based on the results of beta testing using the Likert scale, 86% of the 30 respondents stated that the application developed was effective as a medium for the introduction of the planet.
Design of expert system to determine the proper diet using harmony search method
Authors: Firmansyah E , Rosmawati R , Fuadi R S , Fauzy D , Ramdhani M A
Published: December 2019

Excess or lack of nutrients contained in food will cause a problem in the body. To solve this problem easily, a computerized system is needed that can provide some advice on the amount and type of food that needed to be consumed. The aim of this study is to design an expert system which addresses individual diet based on calorie activities and body needs. This study uses the Prototype as a software development methodology and Data Flow Diagram (DFD) as a software model. This expert system uses a harmony search algorithm to determine the amount of food with Harris-Benedict formula to calculate the body’s calorie needs. The results of functional system testing and based on the assessment of nutritionists, this expert system have been worked well for people with normal body metabolism.
Hybrid principal component analysis and K-nearest neighbour to detect the catfish disease
Authors: Maylawati D S , Andrian R , Sunarto S , Wildanuddin M , Wahana A
Published: December 2019

Catfish cultivation in Indonesia is a very promising business opportunity with a big profits. Every year, market demand continues to increase. However, this is contrary with the lack of catfish farmer’s knowledge, so that catfish yields are not optimal. This is because, for certain types of catfish such as Sangkuriang catfish, it is easy to contract certain diseases. This study aims to create an automated system that capable of detecting catfish disease based on its symptoms with image recognition techniques. Early detection of catfish disease can help to find out the causes and prevention, so that the yield remains optimally. The method that used in this study is Principal Component Analysis (PCA) for feature extraction in images combined with K-Nearest Neighbour (KNN) with Euclidean Distance to classify catfish diseases among others: white spots, edema (abdominal swelling), jaundice, and bent spinal disease (scoliosis and lordosis). Based on the results of the experiment using 30 images data for training and 20 images data for testing, 18 image data is classified correctly. This result proves that PCA and KNN able to detect catfish disease well with percentage of accuracy around 90%.
News recommendation system using collaborative filtering method
Authors: Wahana A , Maylawati D S , Wiwaha B A , Ramdhani M A , Amin A S
Published: December 2019

In the era of Internet of Things (IoT), various facts, news, and up-to-date information are presented online that can be accessed quickly, anytime, and anywhere. However, sometimes the news which displayed is not up-to-date or not in accordance with the interests of the reader. This study aims to build a system that can recommend the latest news, which is most often accessed, and that is in accordance with the interests of the reader. The method that used in this study is Collaborative Filtering (CF) to rank news as the best recommendation for readers. Based on the results of experiments conducted on 19 examples of news, the percentage of accuracy results of the recommendations was around 84.2% compared to the manual calculation. This shows that CF capable to provide news recommendations good enough.
The utilization of Scratch application in making music controller to introduce traditional musical instruments
Authors: Julia J , Iswara P D , Supriyadi T
Published: December 2019

Introducing traditional musical instruments to the students in the digital era needs to be facilitated by utilizing several devices, such as a computer keyboard or a laptop as music controllers. By utilizing a computer keyboard as a music controller, the students can recognize the characteristics of sounds, and play melodies from traditional musical instruments in simpler ways. Therefore, this research aims at describing the utilization of Scratch application in controlling music production through a computer keyboard. This paper uses qualitative methods with the following steps: (1) install the Scratch, (2) make the sound buttons, (3) input the sound from traditional musical instruments, and (4) set the sound buttons according to computer keyboard. The production of the music controller has resulted in teaching media used for introducing the sound of traditional musical instruments and playing a series of melodies based on the availability of tone structures in a computer keyboard. The melodies can be played in single-tone, two-tone, and/or more patterns. To conclude, the utilization of the Scratch as music controllers has potentially facilitated the introduction of traditional musical instruments in the digital era to the students. The implication is that it needs to involve technology in introducing traditional musical instruments.
Electronic catalogue for mapping mosque potencies
Authors: Satria E , Cahyana R , Aulia N
Published: December 2019

The existence and purpose of the mosque are vital in Islam. In the mosque, there are some activities related to religious and social life. Although mosque identically used as the centre of religious activity, although there are some potencies can be utilized from mosque such as, economy, education, social, etc. The main idea of this research is to design an electronic catalogue so people can map the information about mosque potencies. In this paper, we use Rational Unified Process (RUP) for research staging and Unified Modelling Language (UML) as a modelling tool. Result of this research is an electronic catalogue application which can provide the mapping of information about mosque potencies and activities related to mosque accurately. We hope with this electronic catalogue, people can be more aware of influences, function, and impact of the mosque to social life around it.
The application of augmented reality in learning English phonetics
Authors: Nugraha I , Suminar A R , Octaviana D W , Hidayat M T , Ismail A
Published: December 2019

EFL learners tend to ignore the importance of understanding English phonetics in spite of its significance in language acquisition process. The failure of using and understanding English phonetics leads to mispronunciation issues which in turn impede both oral and written communication. Concerned with this issue, the research developed the use of augmented reality (AR) technology to facilitate English phonetics learning processes. The technology combined virtual objects and video clips in more attractive and interactive learning environment. This study described the steps and procedures of developing augmented reality as English Phonetic learning media and disclosed how the students utilized this media in their learning processes.
Simulation of ocean waves in coastal areas using the shallow-water equation
Authors: Muliyati D , Ambarwulan D , Sinarno W , Sumardani D , Bakri F , Permana H , Putri A S T
Published: December 2019

This study simulates shallow water waves using the Navier-Stokes equation. This simulation uses the MatLab application, especially Quickersim with 2-dimensional output. Mesh in simulation is made using Gmsh. Research about shallow water has an essential role in studying the characteristics of ocean waves. The depth of the sea influences this characteristic. Data obtained from this simulation is in the wave height and velocity positions at any time. The limitations in the data collected are not comparable with the experimental results because there are no experimental Navier-Stokes simulations, but these simulation results have shown the phenomenon of seawater movement. In future work, the results of this study can be used to analyse its application in tsunami waves.
Implementation of Haversine formula for school location tracking
Authors: Dauni P , Firdaus M D , Asfariani R , Saputra M I N , Hidayat A A , Zulfikar W B
Published: December 2019

The School Location Information Application is an application developed to produce various information and it can be seen and distributed in order to support school tracking and their locations. School Location Information Application is done by collecting data analysis, design, and implementation stages. This application is made by Android base for clients using Java programming language and the server base on web to process data using HTML and PHP accompanied by SQL as the database manager. However, The Haversine Formula method is used to determine distance between user’s location and school location that they want. The result of this application development is expected to be able to solve some problems related to the school tracking and to support the users to easily find the closest school with available information.
Implementation and comparison analysis of apriori and fp-growth algorithm performance to determine market basket analysis in Breiliant shop
Authors: Hidayat A A , Rahman A , Wangi R M , Abidin R J , Fuadi R S , Budiawan W
Published: December 2019

The creativity of an online store owner who develops a business in a retail business in determining a marketing strategy will affect his competitive ability with other online stores. However, services that are in accordance with costumers attitude is a stuff that should be awarded by shop owners in order to improve not only customer satisfaction but also store income. The method used in this study is Market Basket Analysis to know customers attitude by analysing data from sales transactions to show customers attitude toward one sold item and the others. Research aimed that it is necessary to have a system that can help to form a combination among products using the association rule method, the algorithm used to analyse this method is apriori and fp-growth algorithm. Result from data analysis test using monthly sales transaction data of cosmetics in Breiliant Store during November 2018 with 34 number of data sales transaction. It could be concluded that a combination of products which have strong support and confidence were Original Liquid Bleaching Seeds, Harva Peeling Gel and Castor oil. It had support value of 8.8% and 30% confidence value, with a filtering time of 0.036 seconds.
Natural disaster topic selection using decision tree classification
Authors: Sutedi A , Rahayu S , Elsen R , Supriatna A D
Published: December 2019

Social media like Twitter used as a reference for popular and trusted news today. This opportunity could be useful manner to inform the natural disasters that occur in certain condition related to their locations. This study aims to proposed model to select the topic related to the natural disasters that occur in Indonesia based on Twitter user timeline. The selected topic will use as a reference to ascertain events, conditions of victims, and position of disaster locations. In this study, the data taken from the official Twitter account of @BNPB_Indonesia. The data extracted into two main classes, and grouped based on types of disasters, victims, and disaster locations or safe point position using decision tree algorithm.
Study of DRMF and ASM facial landmark point for micro expression recognition using KLT tracking point feature
Authors: Asmara R A , Choirina P , Rahmad C , Setiawan A , Rahutomo F , Yusron R D R , Rosiani U D
Published: December 2019

Micro-expression recognition is one of the popular researches in analysing expressions on the face. Micro-expression is a facial movement that occurs in a short time and is difficult to identify manually by human eyes. In general research, facial landmarks are used to form a large size ROI for each facial feature for the feature extraction process. In this study, we track the subtle motions of micro expressions by using point features. This approach aims to get feature extraction from tracking results and then analyse micro-expression. We compared the Active Shape Model and Response Map Fitting methods to produce accurate points and fast time on facial features. To measure the subtle motion tracking of facial features in each frame tracking is done using the Kanade-Lucas-Tomasi method. To estimate the rationality of our method, we conducted an experiment on CASME II and SAMM dataset for micro-expressions. The results show that the points on DRMF are more accurate with point-to-point error is 7.9 and the time taken is faster which requires time is 0.02 second. We evaluated the method proposed for evaluation showed that using CASME II - Naive Bayes (79.3%) and SAMM - Naive Bayes (74.6%).
Analysis of infrastructure for integration of mobile learning and project based learning in technological and vocational education
Authors: Sugiyanto S , Setiawan A , Hamidah I , Ana A
Published: December 2019

The development of applications on smartphone devices might be potential to help in improving teaching and learning process. This research addresses IT-infrastructure and readiness in integration of mobile learning and project based learning (PjBL) for vocational education. The research data were collected by questionnaires from 100 students of the tenth grade of a computer and network engineering program of the vocational school. The results show that the IT-device owned by the school has been qualified for implementing mobile learning and project based learning (PjBL). The research also found that the students are ready to participate actively in learning process by using proposed model that will be carried out by online, so that teachers can implement learning scenarios by using the online system. The mobile application is accessed by using IT- devices such as smartphones, netbooks, personal computers through internet/intranet network media by data sources of various digital documents learning in documents files, pdfs, videos, presentations and images stored in the cloud suitable the syntax project based learning based on basic competencies.
Comparison of accessibility of OER repositories of developed countries and developing countries based on WCAG 2.0 guidelines
Authors: Saripudin S , Djohar A , Rohendi D , Abdullah A G
Published: December 2019

Access to quality education in the era of ICT technology is growing rapidly, by utilizing this technology ideally it is not a problem, thus the presence of technology can be a problem solver that occurs such as inequality of quality educational material and access to the intended materials, this is certainly a dream all parties because, in reality, all this is not easy. The biggest challenge in equalizing the quality of education is experienced by almost all countries in the world, especially countries with large territories and populations. Inequalities and gaps in differences and equal access to quality education material occur in almost every country in the world. Distance learning can be carried out easily by utilizing ICT infrastructure. Almost every country in the world strives to provide open wide access through the use of web-based applications to facilitate and facilitate the population of the needs of teaching materials according to the population. This article will discuss, analyse and explore the comparison of the accessibility of the Open Educational Resources (OER) repository in developed countries with developing countries.
Analysis of injector spring damage to determine maintenance management diesel engine at PLTD Ampenan
Authors: Wilarso W , Wibowo T , Teguh B , Mujiarto M
Published: December 2019

The injector spring in cylinder #2 of a diesel engine in Ampenan PLTD which is operated by PT. X damaged. After visual inspection, a helical spring of the injector was broken. The spring broke in the lower part, in winding 2 of the spring. Before the damage was known, with a diesel load of 1100 kW, the exhaust manifold the cylinder #2 was glowing. Root cause analysis of the broken spiral spring was carried out by visual observation, metallography, and maintenance management analysis. Results indicated that the damaged of the broken injector spring based on visual observation of the helical spring was due to alternating bending loads. The fracture angle was at 450 indicated a bending load. Benchmark shows the beginning of the fault, followed by a static fracture. Metallographic and microstructure examination results found too many sulphides possibly making the formation of the onset of the fatigue. To minimize the damage, the sulphide amount of the spring must be reduced, and the spring injector material must be redesigned. Maintenance management must check every time the new spring is received and the cam lobe dimensions and wear of the roller must be lifted every 1000 hours.
Digital library as learning resources
Authors: Ilahi R , Widiaty I , Wahyudin D , Abdullah A G
Published: December 2019

Information and Communications technology (ICT) has been widely applied in digital library services to improve the knowledge and the public interest. Researchers can easily obtain the information of interest through internet surfing. Digital libraries seek to provide prospective readership with alternative materials for reading. They also preserve the culture, customs that could be learnt by future generations. The utilization of digital libraries as learning resources include educational and community aspects. The purpose of this paper was to review and analyse the impact of a digital library system in education on potential readership.
Camera DSLR animation media as learning tool base
Authors: Wibawa S C , Megasari D S , Mashudi M , Sahlan M , Kristanto A , Dewi V K
Published: December 2019

This study aims to develop an animated media camera angle based on the functions of the interior and exterior parts of a flash-based camera. This study used the Engineering Design Process method which consists of ask, imagine, plan, create, improve. The data of this study were obtained from 8 Multimedia validators and random 36 students from any Vocational High School. Validation results show that the developed media gets a percentage of 87.5%, the results are included in the very valid category. The average post-test of the experimental class was 81.81. Finally, it can be concluded that this learning media can be submitted as a media reference for students to learn about the camera’s function of interior and exterior.
Integrated application design to facilitate effective and safe student pick-up process by utilizing microcontrollers, socket TCP, and client-server database
Authors: Suprianto D , Wibowo D W , Setiawan A , Agustina R
Published: December 2019

Long queues during student pick-up are a major problem in some elementary schools and kindergartens. Sometimes parents don’t find their children in school because they may be buying food, being in class or playing in a large school area, so their parents have to wait for a long time for their children to go out to the gate. Conversely, sometimes parents are late in picking up their children, which causes the school to keep students from leaving school without the permission of the teacher or officer, and they also have to ensure that all students have returned to their homes. Parents’ complaints about this pick-up problem are a serious concern for the school. Moreover, the news of the kidnapping of children aged 4-12 years (the crime of trafficking) will worry all parties. This study aims to design integrated applications by utilizing RFID, Microcontroller, Socket TCP, Text to Speech, Client Server and Database as a student pickup model by parents as registered RFID cardholders. Based on the identification of the parent RFID card that is read by the RFID reader sensor and matched with the data in the database, then the application will automatically call the name of the student according to his RFID through the technique of text to the speech voice synthesizer. The method of developing applications using Waterfall. The results of implementing this application system show that the performance accuracy of 90% can be used properly.
Indoor localization based Wi-Fi signal strength using support vector machine
Authors: Rubiani H , Fitri S , Taufiq M , Mujiarto M
Published: December 2019

Ubiquitous computing to estimate the location of objects in a building raises a fundamental challenge and there has been a lot of research on localization in buildings based on signal strength by utilizing devices inside such as Wi-Fi signals. Positioning objects using algorithms of received signal strength in this paper using Linear Support Vector Machine which will be compared with Naïve Bayes. Experiments carried out using 14480 datasets and 302 classes were collected from the real world environment and the results showed that the system reached the correct classification level of around 88% and a minimum distance of error of 4.61 meters compared to Naïve Bayes for the correct classification level of around 67 % and average error distance of 6.21 meters.
Improving student learning achievement in the block of nervous system and special senses through application of blended learning strategy
Authors: Ningrum R K , Widjana D P
Published: December 2019

Since its establishment in 2009, the Faculty of Medicine and Health Sciences, University of Warmadewa has implemented a competency-based curriculum, in which teaching materials are grouped into block based on systems or themes. By this way, learning is expected to be more meaningful because clinical sciences can be introduced to student earlier. The study design was cross-sectional analytic where all students of the years 2016 and 2017 who underwent block 1.6 (Nervous System and Special Senses) were involved. From the present study we concluded that E-learning in combination with conventional learning method (blended learning) increased student achievement in final students assessment of the block Nervous System and Special Senses, hence E-learning can be applied as a supporting tool for conventional learning method.
Your language is easily recognized: A language clustering software in linguistic analysis
Authors: Nurjamin L R , Fajriah Y N , Hamzah A , Setiawati P , Novita L
Published: December 2019

The development of technology in upholding any discipline of knowledge has been widely extended, particularly in linguistic study. One of the advancements is a language clustering software, functioning to analyse any linguistic data through the sorting procedure, namely Monoconc. Due to its significance, this study is aimed at expounding the practicality and feasibility of this software. To achieve this aim, both qualitative and quantitative research approaches were employed. As results, Monoconc software is recommended to utilize in analysing linguistic corpora. The simplicity, as well as the viability, are the main roots of proposing this concordance software as an alternative to applying.
Sound matching on the translation of Al-Quran ayat as a learning media for children using mobile-based fast fourier transform and divide conquer algorithm
Authors: Abdurrodjak M , Mud’is M H , Qodim H , Khaerani I F S R , Rosidin U , Busro B
Published: December 2019

In this paper, a sound matching application was built on the pronunciation of Ayat Al-Quran as a learning medium for children using the Fast Fourier Transform (FFT) Algorithm and Divide Conquer (DC) that support learning independently. The system built in the final project is to utilize the Google API feature on android as voice matching. Furthermore, the incoming sound will convert into text form using the Google API. The conversion method used is a Fast Fourier Transform (FFT). The valuation method, Divide Conquer is used by calculating the sound proximity value of the Google API conversion results by matching Arabic text in the database. Based on the testing that has been done on the system testing. The results of the test found 61.1% accuracy for the appropriate reading and 38.9% for inappropriate reading.
The effect of problem development training using Moodle on teacher performance in developing problem test in high school
Authors: Sastrawijaya Y , Oktaviani V , Hadi R
Published: December 2019

This study aims to determine the effect of the question preparation training using Moodle on teacher performance in preparing test items in high school. This study uses the survey method (field study) using the correlational approach. Methods of data collection using questionnaires and documentation. Based on the results of testing the data that has been done, it was found that the hypothesis testing obtained a decision that there was a positive and significant relationship between the Training of Question Making and Teacher Performance in Developing Test Questions in High School. Calculation of data normality test, obtained results for instrument data on teacher performance with Lcount = 0.138 and training instrument data preparation for Lcount = 0.141 with Ltable = 0.146. That is, data from both instruments are normally distributed. As for the results of testing the hypothesis obtained a value of 0.735. That is, the correlation between the x variable and the y variable is strong. These data indicate that there is a positive relationship between the training of question making using Moodle and teacher performance in compiling test questions in high school.
Correlation regulation comply, accountability, and CSR on palm oil plantation profitability
Authors: Purwanto P , Annurdi A , Damaryanti H , Mamase A R Y , Widyastuti R D , Suyanto A , Masulili A S , Noerhartati E , Muharlisiani L T
Published: December 2019

Palm oil Plantation Company as a business entity that aims to gain profits, in addition to pay attention to the principles of accountability as the application of Good Corporate Governance (GCG), also has the responsibility to implementation CSR in its operations based on applicable regulations. So it is interesting to conduct a study of the impact between company compliance with the rules, the application of accountability principles and the implementation of CSR to the company’s profits. This research type is normative research, and the data used for this research are some legislations, documents and books related to this research. The result of this research revealed that The palm oil plantation company as a corporate entity has responsibility in implementation of CSR in the company management by applying the accountability principle as part of the Good Corporate Governance principle, which is the implementation of CSR is not only a responsibility that owned by the company, but also as a promotion media in gaining profits.
Scientific teaching materials based structured inquiry assisted by animation media
Authors: Hasanah J , Jamaluddin J , Prayitno G H
Published: December 2019

The Problem of science learning at schools usually relates to teaching materials. Teaching materials used as study guides are usually not in accordance with the character and environment of students. This research aims to develop scientific teaching materials based structured inquiry assisted by animation media. The development procedure in this research uses the Dick & Carey model which has 10 development stages namely asses need to identify instructional goal, conduct instructional analysis, analyze learner and contexts, write performance objectives, develop assessment instruments, develop and select instructional material, develop instructional strategy, design and conduct formative evaluation of instruction, revise instruction, design and conduct summative evaluation. The quality of developed product was assessed through feasibility test by two experts and one teacher as a user. Feasibility aspects that are assessed are the content, presentation, language, graphics, and learning media. The feasibility percentage of each aspect was 84%, 88%, 85%, 79% and 83%. The average result of the feasibility presentation value is 83,8%. In conclusion, scientific teaching materials based structured inquiry assisted by animation media is very feasible to be applied in the learning process in junior high school.
Laboratory manual based on smartphone application in increasing students’ psychomotoric learning outcome
Authors: Sartono N , Suryanda A , Sa’diyah H
Published: December 2019

This study aims to determine the differences in psychomotor learning outcomes between students who are use a smartphone-based laboratory manual with students who use laboratory manual based on printed module. This type of research is quasi experimental research. The sample consisted of 40 students 11thgrade high school with 20 experimental group students and 20 control group students. Data collection uses observation sheets of student lab work skills. The results showed that there were significant differences between student learning outcomes using the lab manual on smartphone with students using printed modules so that it could be said that laboratory manual based on smartphone application could improve students’ psychomotor learning outcomes.
Spatial thinking ability and mathematical character students through Cabri 3D with a scientific approach
Authors: Kariadinata R , Yaniawati R P , Juariah J , Sugilar H , Muthmainah A
Published: December 2019

The purpose of this study was to determine the differences in the increase in students’ spatial thinking abilities; differences in achievement of spatial thinking skills based on students’ Early Mathematics (PAM) knowledge; and the difference in increasing the mathematical character of students between before and after mathematics learning using the Cabri 3D software with a scientific approach. This study uses quasi-experiment, the experimental class uses Cabri 3D software with a scientific approach and the control class uses conventional learning. The results showed that: there were differences in the increase in spatial thinking skills; there are differences in achievement of spatial thinking skills based on PAM and there is interaction between PAM categories of students with learning in achieving students’ spatial thinking skills; there is a difference in the improvement of students’ mathematical characters between before and after mathematics learning using the Cabri 3D software with a scientific approach. Mathematics learning using Cabri 3D software with a scientific approach is one alternative to improve spatial thinking skills and mathematical character of students.
Methods to compute determinant of a 3×3 matrix
Authors: Sukaesih E , Cahyati C , Wulan E R
Published: December 2019

Sarrus’s method is a rule to compute the determinant of a 3×3 matrix, by write out six entries of matrix (two columns or rows of matrix). Recently in 2014, Hajrizaj gave three new methods to compute determinant of a 3×3 matrix, by write out four entries of a 3×3 matrix. By position of copied entries from Hajrizaj’s methods, we do combination for four duplicate entries to get fourteen methods of computing determinant of a 3×3 matrix.
Classification of diabetes events using discriminant analysis
Authors: Rahayu W , Santi V M , Putri B S
Published: December 2019

This study aims to classify diabetes events accurately, because it can be used as early prevention before complications occur. Based on linear discriminant analysis, it gets that someone who have more weight, lower age, and more cholesterol level will make s/he classified into diabetes patient. Then, based on APER test, it gets results the percentage of misclassification is 14%. Therefore, classification of diabetes case using discriminant analysis can be used for the classification of diabetics, because the accuracy has a reasonably high result. Classification with discriminant analysis is expected to be applicable to other diseases datasets.
Teaching “surface area of a sphere and volume of a ball” using an inquiry approach
Authors: Triwahyuningtyas D , Suastika I K
Published: December 2019

This study aimed to investigate how to teach the surface area of a sphere and volume of a ball to students of elementary school teacher education using the inquiry approach. The study used a single-subject research approach for students of elementary school teacher education, Universitas Kanjuruhan Malang, Indonesia, who have been permanent teachers in elementary schools. They were to teach the surface area of the volume using experimental demonstration method. The data analysis used in this study was a combination of quantitative and qualitative description. The results of the study showed that students found the surface area of a sphere was 4πr^2using the approach of circle area and the volume of a ball was 4/3 πr^3 using the approach of a cylinder volume. It had been proven that the approach was effective to improve students’ understanding, particularly on the surface area and the volume. In addition, they were also able to implement it to their students at schools.
Development of rental property insurance models with Generalized Linear Models (GLM)
Authors: Sudarwanto S , Ambarwati L , Hadi I
Published: December 2019

In this paper we developed insurance model on property rental business using. Generalized Linear Models (GLM). GLM was chosen because the data on property rental match with the characteristics of GLM. Analysis of the model is done by looking at the relationship between the distribution functions that are most widely used in the analysis of property rental data. The models for the relations of distribution functions are: Poisson-Gamma, Poisson-Inverse Gauss, Negative Binomial-Gamma and Negative Binomial-Inverse Gauss. The relationship between the distributions is seen from the root-mean-squared error (RMSE) and absolute mean error (MAE). The simulation results show that the model formed in the case of random effects increases in standard deviation values also increases the variation value on the average estimator. This is in accordance with the condition that the addition of standard deviation means that there is an increase in the variance of the data.
Evaluating teaching performance in elementary schools based on multi-criterion decision making
Authors: Yasa A D , Chrisyarani D D , Utama D M , Werdiningtiyas R K
Published: December 2019

Teaching performance evaluation is an important factor to improve the quality of teaching as well as the quality of school management. This paper aimed to evaluate teaching performance in elementary schools. Since Information and Communication Technology (ICT) support is one of the multi criteria of evaluation, AHP and SAW integration was suggested to evaluate teaching performance. In the evaluation process, AHP method was used to consider criteria and sub-criteria. Therefore, a case study was conducted to describe the issue. The results showed that both the methods of AHP and SAW were objective, accurate, and scientific in evaluating elementary school teachers’ teaching performance. It is expected that the tool is used to be able to improve teaching performance in elementary schools.
Wreath products and multipartite quantum systems
Authors: Kornyak Vladimir V
Published: December 2019

A natural symmetry group of a multicomponent quantum system is a special combination of a symmetry group acting within a single component (“local group”) and a group that permutes the components (“spatial symmetry group”). This combination is called the wreath product. Unitary representations of wreath products describe quantum evolutions of multipartite systems. It is known that any unitary representation of a finite group is contained in some permutation representation. We describe an algorithm for decomposing permutation representations of wreath products into irreducible components. This decomposition makes it possible to study the quantum behavior (entanglement, non-local correlations, etc.) of multipartite systems in invariant subspaces of the permutation Hilbert space.
Vaisman Algebroid and Doubled Structure of Gauge Symmetry in Double Field Theory
Authors: Mori Haruka , Sasaki Shin , Shiozawa Kenta
Published: December 2019

The Vaisman algebroid is a kind of algebroid structure. It is de ned by an extension of the Courant algebroid, and phisically related to the gauge symmetry in Double Field Theory (DFT), which is an effective theory of string theory. DFT has T-duality as a manifest symmetry. In this study, we focus on the \doubled structure” in the Vaisman algebroid. It is already well known that some kind of Lie algebras are obtained by the Drinfel’d double of Lie bialgebras. The Courant algebroid is obtaind by the Drinfel’d double of Lie bialgebroids. We nd that the Vaisman algebroid can be obtained by an analogue of the \Drinfel’d double” of Lie algebroids. We discuss the algebraic origin of the strong constraint in DFT.
Discrete analysis on non-cubic lattices
Authors: Nesterenko Maryna , Pošta Severin
Published: December 2019

The paper proposes practical and computation methods for discrete analysis of functions defined on the weight lattices or model sets of semisimple Lie groups. They are entirely group theoretical, being based on finite groups and their duals. Numerical computations approximate target functions uniformly on the entire infinite space. Several examples are considered.
Hom-Lie structures on 3-dimensional skew symmetric algebras
Authors: Ongong’a Elvice , Richter Johan , Silvestrov Sergei
Published: December 2019

We describe the dimension of the space of possible linear endomorphisms that turn skew-symmetric three-dimensional algebras into Hom-Lie algebras. We find a correspondence between the rank of a matrix containing the structure constants of the bilinear product and the dimension of the space of Hom-Lie structures. Examples from classical complex Lie algebras are given to demonstrate this correspondence.
Integrable surfaces induced by generalized Landau-Lifshitz equation with self-consistent potential
Authors: Sagidullayeva Zh. , Nugmanova G. , Myrzakulov R.
Published: December 2019

In this paper, we present integrable surfaces associated with generalized LandauLifshitz equation with self-consistent potential. We obtained the rst and second fundamental forms. The rst fundamental form allow us to calculate the curvature and metric properties of a surface, particularly, length and area of related space. The second fundamental form determines the external geometry of the surface in the vicinity of this point. Together they permit to de ne extrinsic invariants of the surface and its principal curvatures. The results can be used to describe spin waves in magnets and ferromagnets.
Exact solutions for the (3+1)-dimensional Kudryashov-Sinelshchikov equation
Authors: Shaikhova G.N. , Kutum B.B. , Altaybaeva A.B. , Rakhimzhanov B.K.
Published: December 2019

In this work, (3+1)-dimensional Kudryashov-Sinelshchikov equation is investigated by using the sine-cosine method and modification of the truncated expansion method. A variety of exact solutions are obtained.
Para-Hermitian Geometry and Doubled Aspects of Vaisman Algebroid
Authors: Shiozawa Kenta
Published: December 2019

The geometry of double field theory (DFT) is described by a para-Hermitian manifold M. A tangent bundle of the para-Hermitian manifold T M is decomposed into two eigenbundles L and ∼L associated with the eigenvalues of the para-complex structure K. We define a Lie algebroid structure on the eigenbundles L, ∼L. The gauge symmetry algebra of DFT is governed by the C-bracket. The algebraic structure based on the C-bracket is not a Courant algebroid, but a metric algebroid proposed by Vaisman (the Vaisman algebroid). We show that the Vaisman algebroid in DFT is naturally defined on T M by an analogue of the Drinfel’d double of L, ∼L. We also find that an algebraic origin of the strong constraint is the condition for (L, ∼L) to become a Lie bialgebroid.
Prime forms and higher genus deformed Eisenstein series
Authors: Zuevsky Alexander
Published: December 2019

Using the theory of Szegő kernel on a genus g Riemann surfaces obtained as a result of the multiple ρ-parameter formalism of sewing of g handles to the complex sphere, we derive new formulas related prime forms, theta functions, and deformed Eisenstein series. We establish recurrent formulas for genus g prime forms and Szegő kernel as well as further identities. Using the above results, we introduce finally another definition of genus g counterpart of genus one deformed Eisenstein series. The results obtained are then useful in computation of vertex algebra related cohomologies.
Critical role of V1a vasopressin receptor in murine parturition†
Authors: Tsuchiya Hiroyoshi , Fujimura Shyota , Fujiwara Yoko , Koshimizu Taka-aki
Published: December 2019

The precise mechanisms of the reproductive physiological processes, such as labor initiation, are poorly understood. Oxytocin (OT) is one of the well-known uterotonics and is clinically adopted as a medication to facilitate childbirth. Vasopressin (VP), a posterior pituitary hormone similar to OT, has also been proposed to be involved in the reproductive physiology. In this study, we found that a total deficiency of V1a receptor subtype (V1aR) in mice resulted in a reduced number of pups, delayed labor initiation, and increased post-delivery hemorrhage compared with those in wild-type mice. Among the VP receptor subtypes, only V1aR was found to be expressed in the murine uterus, and its distribution pattern was different from that of the oxytocin receptor (OTR); V1aR expression was mainly distributed in the circular myometrium, whereas OTR was strongly expressed in both the circular and longitudinal myometrium. The maximum contractile force of the circular myometrium, induced by VP or OT, was attenuated in the pregnant uterus of Avpr1a-deficient mice. Contrarily, while OT expression was decreased in the Avpr1a-deficient uterus, OTR expression was significantly increased. These results suggest that V1aR deficiency not only reduces the uterine contractile force but also perturbs the expression of genes responsible for the reproductive physiology. Therefore, V1aR is necessary to exert the maximum contraction of the circular myometrium to deliver pups. This study revealed an important role of V1aR in physiological contraction and term parturition in mice.