bluuebunny/crossref_metadata_2025_split huggingface dataset:
Exploration of teachers’ “knowledge of students” in study-based teaching on polyhedron material
Authors: Ma’rufi  , Ilyas M , Pasandaran R F , Salwah  
Published: December 2019

Abstract
Teachers’ knowledge in “knowing” student problems is an important factor to support the improvement of the Mathematics learning process in the classroom. Therefore, this research aims to explore the teacher’s strategies to overcome students’ errors/misconceptions in the material of polyhedron. This is an explorative study and carried out with a qualitative approach so that it contains a set of credible facts that were revealed in depth. Some instrument that used are; field notes, observation sheets for teacher activities, student activities, and learning transcripts A phase lesson study scheme was also applied to create coherent learning scenarios. This combination resulted in findings that had an impact on improving teacher skills in dealing with the errors made by students in terms of concept, procedure, and initial knowledge systematically. The findings of this study were; the teacher can describe the types of knowledge about students’ errors/miskonceptions, and then developed strategies to deal with errors/misconceptions effectively.
A Construct Validity of Spatial Literacy Instrument
Authors: Anindyarini R , Rosnawati R 
Published: December 2019

Abstract
To measure spatial literacy skills, a good instrument is needed. Therefore, this study aims to 1) compile the construct of a spatial literacy ability test instrument for prospective mathematics teacher students, 2) to do validation of the construct to see the index of validity and reliability. Content validation using the V Aiken formula and the Cronbach Alpha coefficient were used to test the validity and reliability. The results showed that: 1) the construct of spatial literacy in the form of operational definitions, six indicators, 17 sub indicators and 34 questions in the form of multiple choices has shown a form of spatial concept integration with literacy, 2) spatial literacy test instruments are feasible because they meet index validity requirements V Aiken between 0.67 - 0.89. The test kit also states fit for 34 items, because it is in the acceptance limit range of >0.77 to <1.30. In addition, the level of difficulty on the test using a logit scale that produces 13 categorized items is very easy, 6 items are easy, and 15 items are difficult. In the study, the value of reliability was 0.704 (> 0.5). While the Standard Error of Measurement (SEM) which is a value that measures how precise the value obtained is equal to 1.287. Henceforth, this test kit can be used by the academic community at universities or other agencies concerned to measure the level of spatial literacy of prospective mathematics teachers.
Analysis of the big data generated in the company’s social networks “Sistemas Expertos SAS” using NVivo
Authors: Rojas-Figueroa A M , Londoño-Gallego J A , Pérez-Betancur N , Gómez-Navarro M V 
Published: December 2019

AbstractThe fourth industrial revolution sparked by the advent of the Internet caused a wide variety of media to interact with the shareholders of a company. The interaction on Facebook, Instagram, Twitter, YouTube, websites, and others, generated a large quantity of data that overwhelms the ability of a small entrepreneur to analyze, process and make appropriate decisions regarding the behavior of its consumers. The objective of this research paper is to analyze the social networks of “Sistemas Expertos SAS”, a consulting company in project management through NVivo 12 software. For the construction of this case a bibliographic analysis of the literature and a quantitative and qualitative analysis of the social channels of the company under study were carried out, using the technology of “Servicio Nacional de Aprendizaje” information processing and analysis laboratory. With this analysis we want to provide valuable information to better satisfy customers, thus generating social inclusion for small business owners who do not have access to advanced tools to innovate and allowing an approximation to the reality experienced by the 87% represented by Colombian small and medium sized enterprises.
Analysis of angular stability of the synchronous machine by biparametric bifurcations
Authors: Mesa F , Ospina R , Correa G 
Published: December 2019

Abstract
In this paper we present the qualitative solution techniques of dynamic systems applied to the second order model of the synchronous machine (swing equation), with the aim of achieving a deeper analysis about the stability of the electric power system. Initially, the dynamics of the electrical power system are brief described, where the elements that interact in this and the stability classes to be analyzed are explained. Next, the mathematical model of the synchronous machine is formulated in detail from Newton‘s second law, in order to specify the theory of dynamic systems and the qualitative solutions that are applied to the study model. Finally, the results of the implementation of the qualitative solution techniques of the dynamic study system are presented, concluding with the stability zones of the synchronous machine.
Data Sharing Technique Modeling for Naive Bayes Classifier for Eligibility Classification of Recipient Students in the Smart Indonesia Program
Authors: Mustakim  , Syahidatul Helma Siti , Ramadhani Ulya , Achmad Daengs GS , Novita Rice , Nuryanti  , Rahmawati Fitriatien Sri 
Published: December 2019

Abstract
The objective of Smart Indonesia Program (Program Indonesia Pintar: PIP) is to help school-aged people from poor / vulnerable / priority families to continue to receive education services to graduate from secondary education, both through formal and non-formal education channels. In its implementation, there are still many fraudulent in the proces of nominating proposal PIP funds and there are still many prospective students who should not receive PIP because they do not meet the technical guidelines provided by the Ministry of Education and Culture to determine the eligibility of prospective recipients of PIP funds can be done by schools and stakeholders, one of them by using classification techniques. One algorithm that is widely used in classification is the Naive Bayes Classifier (NBC) algorithm. In this study three data sharing techniques were used, namely Hold Out 70% training data and 30% testing data, K-Means Clustering, and also 10 Fold Cross Validation. Determination of the best data sharing technique will be determined by looking at the value of Accuracy, Precision, and Recall and also the value of Area Under Curve (AUC) which is illustrated by the Receiver Operating Characteristic (ROC) curve so that the NBC algorithm is generated with 10 Fold Cross Validation has a very good classification level with the values of accuracy, precision, and recall respectively at 97.40%; 100%; and 76.14%.
IoT Based Smart Parking System
Authors: Mustari Syafiq Ismail Mohd , Jusoh Muzammil , Sabapathy Thennarasan , Nasrun Osman Mohamed , Abdul Rahim Hasliza , Najib Mohd Yasin Mohd , Fasihah Mohd Fazilah Ainur 
Published: December 2019

Abstract
Difficulty to find parking space is major problem for users that want to park car especially at crowded spot. The old technique to find parking space is manual by finds free space area by self. This makes the users take more time and energy that end up lead to traffic jam. Due to these problems, based smart parking system is developed to ease user to find parking space. This method is developed to approach the user to using application to review available parking space and pay parking through mobile phone application. The requirement for this project is a Raspberry Pi 3, Python IDE for software, an ultrasonic sensor and a Pi Camera. There are two objectives for this project. Firstly, to develop monitoring system that detect presence vehicle using ultrasonic sensor and camera artificial intelligence. The second objective is to propose the parking fee payment can be made through mobile applications via PayPal. The project of the based smart parking system is work when the users reserve the parking and made a payment via PayPal through mobile application. While ultrasonic sensors and camera detect the present of the vehicle.
Smart Electronic Pigeon Hole System
Authors: Kah Hean Seah , Nazmi Mohd Nasir Mohd , Faiz Muhammad Asri Nandan Muhammad , Syafiq Abd Rahman Mohamad , Hanim Shafiqah Sidik Nurul , Jusoh Muzammil , Nasrun Osman Mohamed , Abdul Rahim Hasliza , Sabapathy Thennarasan , Najib Mohd Yasin Mohd , Fasihah Mohd Fazilah Ainur 
Published: December 2019

Abstract
Throughout this modernization world, the demands on Internet of Thing keep increasing. Most mailbox or pigeon hole are designed with poor efficiency system and commonly suffer from some possible flaws such as manually checking the letter by the user. The main problem of this project is to improve the existing pigeonhole system. In the case of staff at School of Computer and Communication System, Universiti Malaysia Perlis, each academic staff has been allocated a pigeon hole for any letters or memos from within or inter faculty. Unfortunately, the current conventional pigeon hole system is unable to inform and notify the staff on any urgent letter and this lead to significant delay in responding the letter. The main weakness of the current system is that staffs need to check their respective pigeon hole every day. However, due to the routine commitment or unforeseen circumstances the pigeon hole cannot be possibly checked every day. Hence, to fulfil this requirement, this project named as Smart Electronic Pigeon Hole System is introduced in order to make the pigeon hole more efficient. The purpose of this project is to design a smart electronic pigeon hole system with some detecting sensors such as infrared and ultrasonic sensors. Wi-Fi module acts as a tool to communicate via email between pigeonhole’s system and its owner. Arduino board is used to be programmed in such a way to process the sensors when detecting the upcoming document or letters and to continuously check the status of capacity of the pigeon hole. This project work with the administrative staff, who collected the documents from the post center, will entered and select the designated number of the pigeon hole users. Infrared sensors, located at the front, will detect the upcoming documents or letters. Ultrasonic sensor will detect the fullness of the letter in the pigeon hole. When there is arriving of document or letters, the user will get the notification email. The user will also get the warning notification email when their pigeon hole is full with documents. Red LED will light on when the capacity of the pigeon hole is full. The sensor will continually sense the condition of the pigeon hole as long as the system is activated. This project is suitable for the staff or the apartment residents as it has the capability to alert the user when there is a letter to prevent the urgent letter’s being ignored.
Optimizing Wireless Distribution System Network Infrastructure in Hybrid Topology using PCQ Method
Authors: Devira Ramady Givy , Hidayat Rahmad , Anung  , Ghea Mahardika Andrew , Hidayat Wisnu 
Published: December 2019

Abstract
A good and efficient network infrastructure design must be considered when first building a computer network system. The position of buildings that are far from each other sometimes becomes a separate problem that results in the quality and performance of computer network signal services not being optimal. The implementation of the Wireless Distribution System (WDS) on the STTM campus network infrastructure will be combined with the use of the Peer Connection Queue (PCQ) method, which is one of the features of the Mikrotik device. The use of the PCQ method aims to optimize internet bandwidth, through a mechanism for distributing bandwidth evenly to each user that has been set on the management bandwidth, also we can observe the throughput, delay, and jitter of the built network infrastructure. The study was carried out following the stages of designing schemes and network topology, designing and configuring network infrastructure, then in the last stage testing connectivity and performance was done through several clients connected to the network. The data obtained from the test results will be analyzed and then evaluated whether it is by the expected target of 0% packet loss, delay below 150ms, and jitter under 75ms.
Development of Teaching Modules Based on Problem Solving
Authors: Mahmudi Haris , Fauzi Ah.Sulhan , Setyowidodo Irwan 
Published: December 2019

Abstract
This research aims to develop teaching module products based on problem solving and disseminate product results to students as users. This research is a development research that uses three stages, namely: (1) preliminary research, (2) the stage of making a prototype, and (3) the assessment stage. Based on the data analysis of the validation results from the validator and the readability test analysis by the students’ assessment of the feasibility of teaching modules based on overall problem solving, the total mean score was 3.39 with the criteria feasible. The assessment of problem solving based teaching modules consists of two aspects, namely aspects of assessing the feasibility of content and aspects of evaluating the feasibility of presentation. Aspects of the feasibility assessment of the contents of problem solving based teaching modules obtain an average value of 3.22 with eligible criteria. The aspect of the feasibility assessment of presentation obtained an average value obtained from 3.55 with the criteria feasible. While the results of the teaching module based learning on problem solving to students viewed from the results of the student satisfaction questionnaire on the use of teaching modules developed were 83% of students very good, while the remaining 17% were good.
Servo Control for Missile System
Authors: Nataliana Decy , Syafruddin R , Devira Ramady Givy , Liklikwatil Yakob , Ghea Mahardika Andrew 
Published: December 2019

Abstract
The ability to make control systems is very limited, especially high-speed two-dimensional motion controls such as missile controls, for that reason researchers try to examine the title Servo Control For Missile System. As a researcher, his goals and hopes from this simple one can become a prototype, the endurance test and then can be used as mass production. Where the stages of this research method make Servo Control For Missile System, the control signal is received through the radio to be processed. Here the researchers used codevision software to create a software application, the signal from the radio then combined with the optical encoder position signal, to get smoother and more precise motion, stopping at a position that is has been ordered then as feedback is input from the encoder servo motor, then the signal is amplified to drive motor power amplifier driver circuit. In this case, the signal processing uses a microcontroller, with several considerations, including a fairly small physical dimension where the outer diameter of the casing is 120mm, the inner diameter is 116mm. Overall Servo Control For Missile System which is a real-time software and hardware control signal application to drive fin.
Socio-Cultural and Settlement Factors That Influence Pro Environmental Behavior on Rural-Urban Citizen
Authors: Mukti Amrullah Haris , Herdiansyah Herdis 
Published: December 2019

Abstract
Environmental behavior in the community has a vital role in structuring the city environment — identification of factors that influence the development of pro-environmental behavior. Various models of the formation of environmental behavior theories show various internal and external factors that determine the development of pro-environmental behavior in a person. Previous studies had explained how socio-cultural, and place attachment are the external factors that contribute to shaping pro-environmental behavior. However, further studies are necessary to determine the most appropriate solution can be applied in emerging cities like Jakarta, based on the grading systems of socio-cultural, and place attachment determinants. This study evaluated the proposed solutions based on those determinants, and calculates the rank based on the implementation criteria, namely: effectiveness, cost, duration, and sustainability using AHP as a tool in the decision-making process in solving the problems with high complexity. It is determined that the prioritized alternative to be implemented in the urban/rural area in Jakarta is Place Attachment, as it is the most sustainable and effective alternative in developing the pro-environmental behavior within the community.
Competitive Force Model for Indopipe Industry with Analysis of Customer Requirements
Authors: Ambarwati Rita , Fathurochman A G , Rizal As’ad 
Published: December 2019

Abstract
The pipeline industry is one of the manufacturing industries that support national development infrastructure. Increased efficiency and expanded brand market share with optimizing the opportunities available on the market is one of the efforts in increasing competitive advantage. The design of this study used interviews and data collection through questionnaires. The analytical unit is the engineering expertise of the Indopipe company at all manager levels. The result of this analysis is the determination of competitive strength strategies with Porter Five Forces in the pipe industry based on criteria of quality, cost, delivery, safety, and morale. The results of the analysis of the study show that strategies to address the threat of new entrants are a priority for managers in this industry. In addition, by improving the quality of pipe products and making this product brand as a market leader, it is the main strategy in increasing competitiveness.
Workload Analysis by Using Nordic Body Map, Borg RPE and NIOSH Manual Lifting Equation Analyses: a Case Study in Sheet Metal Industry
Authors: Chin Jacky , Herlina  , Iridiastadi Hardianto , Shu-Chiang Lin , Fadil Persada Satria 
Published: December 2019

Abstract
The purposes of this research were to identify the lifting complaints experienced by the painting operators in the sheet metal industry at west java, Indonesia. The lifting issues such as operators’ lifting effort and risk were evaluated by combining the Nordic Body Map, the Borg Rating of Perceived Exertion and the NIOSH manual lifting equation tool. Specifically, two questionnaires that consist of Nordic Body Map and Borg Rating of Perceived Exertion and field observation were used as the research methodologies to evaluate respondents’ lifting process when loading the panel box, where its body part, door part and base plate were examined. All of the 44 full-time operators in the painting department of the sheet metal company participated in this study. Their age ranged from 20 to 40 years old. Five complaints were identified by Nordic Body Map questionnaire. These complaints were pain, discomfort, and tingling at operators’ neck, shoulders, and hips. Finding from Borg Rating of Perceived Exertion questionnaire revealed that the effort needed to lift the panel body parts were substantially higher than door parts and base plate. A new manual conveyor was then installed and the study’s recommendations were proven to be successful by reducing the 1991 NIOSH lifting index value from 1.65 to 0.91 when lifting panel body part, from 1.3 to 0.72 when lifting panel door part, and from 0.93 to 0.51 when lifting panel base plate. The value of the Borg Rating was also decreased from 13.79 to 11.96 for panel body part, from 9.36 to 8.82 for panel door part, and from 8.82 to 8.25 for panel base plate, and the lifting complaints of the painting operators were reduced.
Learning of Medicinal Herbs Using QR Codes
Authors: Yasmin Khairani Zakaria Nur , Zaini Hafiz , Siraj Saedah , Md Yunus Melor , Hashim Harwati 
Published: December 2019

AbstractRapid development of information technology today has widened the use of computers as well as mobile phones. With more sophisticated devices is equipped with high resolution color, wireless access and high-speed processing. The current development has evolved with the creation of the portal since the mid-90‘s and given that the potential of the portal, it has been used by various firms regardless of body governmental or statutory bodies. Various advantages that can be utilized by the use of portals as it is has a dynamic source of information from a variety of sources and various formats. The current study aims to discover effects of QR codes implementation on medicinal herbs learning. The findings of students’ responses revealed that the QR Code facilitate the learning of medicinal herbs, whereby the mean from this analysis revealed that average majority of the students find the learning approach is easy to be employed.
Wing Morphology and Body Design in Opsiphanes and Caligo Butterflies Match the Demands of Male Mating Displays (Lepidoptera: Nymphalidae)
Authors: Penz Carla M , Williams Susan F 
Published: December 2019

AbstractThere is noticeable variation in male mate-seeking behavior among species of Brassolini butterflies. Males of Opsiphanes Doubleday and Caligo Hübner (Lepidoptera, Nymphalidae) species perform crepuscular displays along forest edges and in light gaps. While male Opsiphanes perform aerial displays, Caligo males perch and wait for receptive females. A comparison of five species of each genus suggests that male display behavior is associated with, and has likely influenced the evolution of their wing attributes and body design. Opsiphanes males have higher wing aspect ratio and more distal centroid position than congeneric females, suggesting that the energetic demands of aerial displays led to sexual dimorphism in wing morphology. In contrast, male and female Caligo generally showed similar wing morphology, which possibly results from the lower energy expenditure of perching behavior when compared with active flight. Likely due to a genetic correlation between sexes, female Opsiphanes and Caligo are more similar in wing morphology and body design to their congeneric males than to each other. Based on our analyses, we make predictions about reproductive behavior for four species in which male mating displays are unknown.
VEF: a variant filtering tool based on ensemble methods
Authors: Zhang Chuanyi , Ochoa Idoia 
Published: December 2019

Abstract

Motivation
Variants identified by current genomic analysis pipelines contain many incorrectly called variants. These can be potentially eliminated by applying state-of-the-art filtering tools, such as Variant Quality Score Recalibration (VQSR) or Hard Filtering (HF). However, these methods are very user-dependent and fail to run in some cases. We propose VEF, a variant filtering tool based on decision tree ensemble methods that overcomes the main drawbacks of VQSR and HF. Contrary to these methods, we treat filtering as a supervised learning problem, using variant call data with known ‘true’ variants, i.e. gold standard, for training. Once trained, VEF can be directly applied to filter the variants contained in a given Variants Call Format (VCF) file (we consider training and testing VCF files generated with the same tools, as we assume they will share feature characteristics).

Results
For the analysis, we used whole genome sequencing (WGS) Human datasets for which the gold standards are available. We show on these data that the proposed filtering tool VEF consistently outperforms VQSR and HF. In addition, we show that VEF generalizes well even when some features have missing values, when the training and testing datasets differ in coverage, and when sequencing pipelines other than GATK are used. Finally, since the training needs to be performed only once, there is a significant saving in running time when compared with VQSR (4 versus 50 min approximately for filtering the single nucleotide polymorphisms of a WGS Human sample).

Availability and Implementation
Code and scripts available at: github.com/ChuanyiZ/vef.

Supplementary information
Supplementary data are available at Bioinformatics online.