bluuebunny/crossref_metadata_2025_split huggingface dataset:
Marathon pacing ability: Training characteristics and previous experience
Authors: Swain P. , Biggins J. , Gordon D. 
Published: October 2019

AbstractEven pacing within the marathon has been associated with faster marathon performance times, however, little literature has investigated the association between pacing ability during a marathon and a recreational marathoner's training characteristics and previous experiences. N = 139 participants completed an online questionnaire concerning training history in relation to a 2017 marathon and previous long‐distance running experiences. Online databases were used to collect split times of the participants after successfully completing a 2017 marathon, identifying the percentage slowdown in pace between the first half and second half of the marathon, used for correlational analyses. The strongest correlates for pacing ability were marathon finishing time and previous distance race personal best finishing times (i.e. marathon, half‐marathon, 10 and 5 km). There were many weaker, however significant correlates for training history characteristics and previous long‐distance running experience. The current findings demonstrate that greater accrued long‐distance running experiences and higher weekly training volumes are strongly associated with smaller declines in pace during the second half of the marathon in comparison to the first half and less variability in pace during the marathon.
Intense sub-terahertz radiation from wide-bandgap semiconductor based large-aperture photoconductive antennas pumped by UV lasers
Authors: Ropagnol X , Kovács Zs , Gilicze B , Zhuldybina M , Blanchard F , Garcia-Rosas C M , Szatmári S , Földes I B , Ozaki T 
Published: October 2019

Abstract
The characteristics of terahertz (THz) radiation generated from large-aperture photoconductive antennas (LAPCAs) were investigated. The antennas were fabricated using different wide-bandgap semiconductor crystals (ZnSe, GaN, 6H–SiC, 4H–SiC and β–Ga2O3) as the substrate. We used an amplified sub-picosecond KrF excimer laser for illumination of the LAPCAs. THz emission scaling was studied as a function of the bias field and the pump laser energy. It was found that the radiated THz energy scales quadratically as a function of the bias field and sub-linearly as a function of the optical fluence for most of the substrates. Further, we demonstrate that SiC, and especially 4H–SiC LAPCAs offer the best THz generation performances. In order to generate intense THz radiation, we fabricated both 6H- and 4H–SiC LAPCAs with an interdigitated structure. From the field autocorrelation trace, it was found that the spectra lie in the sub-THz regime, extending up to 400 GHz, with a peak frequency at 50 GHz, making the bridge between the microwaves band and the THz band. The maximum generated THz energy was 11 μJ, which is to date the highest THz energy measured from LAPCA sources, with a corresponding peak electric field of 115 kV cm−1 and a corresponding ponderomotive potential of 60 eV. Nonlinear THz experiments were performed using these energetic THz pulses, and open aperture Z-scan experiments in an n-doped InGaAs layer revealed a transmission enhancement of 1.7. It was also shown that in order to have efficient THz generation, the energy contrast of the laser must be kept high.
Non-Gaussian and Gottesman–Kitaev–Preskill state preparation by photon catalysis
Authors: Eaton Miller , Nehra Rajveer , Pfister Olivier 
Published: October 2019

Abstract
Continuous-variable quantum-computing is the most scalable implementation of QC to date but requires non-Gaussian resources to allow exponential speedup and quantum correction, using error encoding such as Gottesman–Kitaev–Preskill (GKP) states. However, GKP state generation is still an experimental challenge. We show theoretically that photon catalysis, the interference of coherent states with single-photon states followed by photon-number-resolved detection, is a powerful enabler for non-Gaussian quantum state engineering such as exactly displaced single-photon states and M-symmetric superpositions of squeezed vacuum (SSV), including squeezed cat states (M = 2). By including photon-counting based state breeding, we demonstrate the potential to enlarge SSV states and produce GKP states.
Possible scale invariant linear magnetoresistance in pyrochlore iridates Bi2Ir2O7
Authors: Chu Jiun-Haw , Liu Jian , Zhang Han , Noordhoek Kyle , Riggs Scott C , Shapiro Maxwell , Serro Claudy Ryan , Yi Di , Mellisa M , Suresha S J , Frontera C , Arenholz E , Vishwanath Ashvin , Marti Xavi , Fisher I R , Ramesh R 
Published: October 2019

Abstract
We report the observation of a linear magnetoresistance in single crystals and epitaxial thin films of the pyrochlore iridate Bi2Ir2O7. The linear magnetoresistance is positive and isotropic at low temperatures, without any sign of saturation up to 35 T. As temperature increases, the linear field dependence gradually evolves to a quadratic field dependence. The temperature and field dependence of magnetoresistance of Bi2Ir2O7 bears strikingly resemblance to the scale invariant magnetoresistance observed in the strange metal phase in high Tc
cuprates. However, the residual resistivity of Bi2Ir2O7 is more than two orders of magnitude higher than the curpates. Our results suggest that the correlation between linear magnetoresistance and quantum fluctuations may exist beyond high temperature superconductors.
Investigation of nanofluid conveying porous medium through non-parallel plates using the Akbari Ganji method
Authors: Akinshilo Akinbowale T 
Published: October 2019

Abstract
This paper presents the study on the Jeffery Hamel nanofluid flow and heat transfer through non-parallel channel taking into account radiation effect. The fluid with porous medium flowing through the non-parallel channel is formulated utilizing momentum and energy equations. Since the model obtained are nonlinear, higher order systems of equations, the Akbari Ganji novel approximate method is adopted in this paper. As reported in the graphical representation of the result, it is depicted that the porous medium limits flow due to increased dynamic viscosity leading to pressure drop while the radiation parameter enhances heat loss through the non-parallel plates. This evidently leads to energy loss. The Akbari–Ganji method is used in this study to investigate the parametric behavior of rheological parameters on the flow and heat transfer owing to its high accuracy. Results obtained in this study compared against analytical and numerical solution obtained in literature shows satisfactory conclusion. Therefore, results from this paper may be useful in advancing studies of nanofluid with porous medium.
Simple electrical motor for elementary school future teachers through scientific work e-rubric
Authors: Hudha M N , Chaeruman U A , Hakim A R , Sundaygara C , Kumala F N , Batlolona J R , Fajaruddin S , Andi T , Yusro A C , Rangka I B , Nandiyanto A B D , Abdullah A G 
Published: October 2019

Abstract
This study aims to reveal on how to teach the concept of electrical motor for college students majoring in elementary education using scientific work e-rubric. The method used in this study is descriptive. The results show that the concept of electrical motor can be taught through simple media and its assessment can be carried out through an application namely e-rubric.
The use of e-rubic to determine energy expenditure in physical activity
Authors: Akin Y , Mulyanto R , Safari I , Fauzy R A 
Published: October 2019

Abstract
In this study discusses the role of google form applications on the internet in determining the amount of energy released by the body during physical activity. It can be calculated in various ways, one of the kinds is by filling out the IPAQ (International Physical Activity Questionnaire) on the google form application. This study aims to determine the amount of energy expenditure when doing physical activity for Physical Education students with uses descriptive research methods. The sample were students of Physical Education department with total 84 students with determination of the sample in this study is by purposive sampling technique. The results of using the google form application on the internet to measure energy expenditure during physical activity can provide a percentage presentation and effectively can help measuring things of the overall intensity categories found in physical activity.
How to develope primary school mathematics learning media
Authors: Karlimah K 
Published: October 2019

Abstract
Development of mathematics learning media is needed in order to obtain representative mathematics learning media so students can learn mathematical concepts and procedures correctly, easily, interestingly, and fun. Therefore, it is necessary to develop mathematics learning media in order to create representative mathematics learning media so that students can learn mathematics correctly, easily, interestingly, and funnily. For this reason, this study was conducted by using a qualitative approach with the model Educational Design Research based on Mc Kenney’s research design. There are three main stages in his research, namely, (a) needs and context analysis, (b) design, development and formative evaluation, and (c) semi-summative evaluation. This study was started with the findings of theoretically measured aspects and indicators which were then developed by using EDR. The study resulted in four representative media about (a) the place value for first and second-grade students, (b) multiplication for second-grade students, (c) fractions for third-grade students, and (d) LCM, GCF and decimal fractions for fourth-grade students.
Mini photovoltaic system project: Physics laboratory activities through a technology-rich learning environment
Authors: Sunaryo S , Bakri F , Abriansyah M C , Muliyati D 
Published: October 2019

Abstract
In this paper, we describe how to design the mini photovoltaic system project for physics laboratory activities, in which student can use it to get the various information. This proposed system can record several physical quantities at a once, voltage, current, and power for each recording time range. This project uses three types of photovoltaic size, that is 3v, 6v, and 12v. The recording processes using Arduino Uno technology. Each measurement is capable of displaying the recording quantities each time, V-t, I-t, and P-t charts. The time required for recording the data can be adjusted to the design of the laboratory learning. All stored data can be analyzed according to the designed activities by the teacher. This mini photovoltaic system support laboratory activities through technology-rich learning environment.
The design of sound wave and optic marker for physics learning based-on augmented reality technology
Authors: Muliyati D , Bakri F , Ambarwulan D 
Published: October 2019

Abstract
This research aims to design and develop the augmented reality marker of sound wave and optic topics for physics learning. Augmented reality is a technology that can provide visualization and integration a perspective. The develop stages consist of determine the instructional needs and goals, develop the markers, and evaluate the design from peers. This research generated eleven markers: (1) how sound wave made a stress and strain in a percussion phenomenon, (2) the Doppler Effect, (3) the application of organ pipe, (4) the diffraction of the light, (5) the interference of the light, (6) the polarization of the light, (7) how the eyes make object, (8) how the camera make object, (9) how the magnifying glass work, (10) how the microscope work, and (11) how the telescope work. The markers expected to assist in the achievement of the instructional objectives. The peer assessment results indicate that the marker design on sound wave and optic topics supports the physics learning through technology rich environment.
The science encyclopedia based on characters to improve the natural science concepts understanding in elementary school students
Authors: Maryani I , Fitriani I N , Sulisworo D 
Published: October 2019

AbstractThis study is development research aimed to develop a character-based Science Encyclopaedia to improve the concepts understanding in students. The product validation was conducted by media expert, material expert, learning expert, students, and teachers. Data were gathered using questionnaires, interviews, and tests. Then the data were analyzed quantitatively and qualitatively. The validation results of media expert showed that the product is in the “good” category (79.80%), the material expert gave a “very good” category (98.87%), and the learning expert gave a “very good” category (86.90%). The total score of 2 teachers is “good” category (79.73%), while 60 students response is a “good” category (85.64%). The effect of this encyclopedia was measured by comparing the mean of the pre and post-test. The mean of posttest score (78.92) is higher than the one of pretest score (64.05). From the t-test, the encyclopedia has the significant effect on the students’ conceptual understanding. It means the Science Encyclopedia can improve students’ understanding significantly. The gain score of the student achievement using the Science Encyclopaedia based on characters of curiosity and reading interest influence significantly to the students’ literacy and concepts understanding in science learning.
Didactic design of circumference and area of square based on Indonesia traditional game in elementary school
Authors: E Nur’aeni L , Pranata O H , Hodidjah H , Apriani I F , Suryati C 
Published: October 2019

Abstract
This research is based on the students do not have comprehensive understanding on circumference and area of square as the students faced learning obstacles while learning the concept of circumference and area of square. The purpose of this study is to overcome the learning obstacle faced by the students. The research method used in this research is Didactical Design Research (DDR) method which consists of three stages, namely the didactic situation analysis before learning in the form of HLT and ADP; metapedadidactic analysis; retrospective analysis by linking the results of the didactic hypothetical situation analysis with the results of the analysis of the metapedadidactic. Data collection techniques used triangulation techniques (observation, interviews, and documentation studies). This study resulted in a learning design in the form of a circumference didactic and area of square based on Péclé traditional games in grade IV elementary school which can overcome the students learning obstacle.
Integration Borg & Gall (1983) and Lee & Owen (2004) models as an alternative model of design-based research of interactive multimedia in elementary school
Authors: Aka K A 
Published: October 2019

Abstract
Interactive multimedia has different development characteristics with other media. This article aims to form an interactive multimedia development model in elementary schools by integrating the development model of Borg & Gall and Lee & Owen. The formulation of these steps is the integration of the development model of Borg & Gall (1983) and Lee & Owen (2004). Borg & Gall focuses on developing new research-based, ready-to-use research products and Lee & Owen that are more specific in developing interactive multimedia products. Through the analysis of the advantages and limitations of each stage of Borg & Gall and Lee & Owen models can be formulated integration steps become as follows: (1) Research and Information Collecting; (2) Planning; (3) Development of Preliminary Form of Product; (4) Expert Evaluation; (5) Revisions Based on Expert Evaluation Results (Revision 1); (6) Preliminary Field Testing; (7) Main Product Revision (Revision 2); (8) Main Field Testing; (9) Operational Product Revision (Revision 3); (10) Operational Field Testing; (11) Final Product Revision (Revision 4); (12) Dissemination and Implementation. The considerations of the researchers to formulate the 12 stages are: (1) advantages of the comprehensive Borg & gall model, with a research-based product development stage and very rigorous testing phases, (2) the advantages of Lee & Owen’s model that focuses on development principles interactive multimedia, (3) the trend of interactive multimedia development research in the scope of elementary schools, and (4) the development of the era that increasingly demands technology-based media for students. The twelve stages formulated by the author above can be adjusted or modified by reducing/adding/changing according to the need to maximize research activities by other.
Teaching styles of the teachers and learning styles of the students
Authors: Ridwan H , Sutresna I , Haryeti P 
Published: October 2019

Abstract
Each teacher has specific teaching styles and varied students’ learning styles that may influence students’ academic performance. The purpose of this study is to identify the teaching styles of the teachers and learning styles of the students. In this descriptive correlational research study, it included the entire 15 teachers and 188 students used simple random sampling. The SAILS and VARK questionnaires were used to determine the teaching and learning style respectively through online. A frequency, percentage, chi-square and Mann-Whitney analysis with SPSS version 20 was utilized in this study. Most of the teachers preferred the Single-Modal teaching style with Kinesthetic (K) preference, while the students preferred All-Modal (VARK) style. There is significant difference between teachers’ teaching styles and learning styles of the students. The researcher concluded that because of the mismatched/not aligned of the teaching styles to the learning styles, the teachers must prepare variety of teaching styles and the students must develop and utilize their learning styles that will allow effective accommodation and adaptation with the classroom and program requirements.
The impact of information technology on the awareness of parents and high school students to pursue the higher education
Authors: Aeni A N , Kurnia D , Djuanda D 
Published: October 2019

Abstract
This research was motivated by the importance of uncovering the question of how the impact of information technology on the awareness of parents and high school students to pursue the higher education, because of the education is an important thing that needs to be fought. Every Indonesian citizen has the right to get education until a high level. Now the acquisition of information about the higher education is supported by information technology. People are getting education information easier, but does the information technology have an impact on awareness of parents and high school students to pursue the higher education? The method used in this study is a survey. Data obtained from questionnaires distributed to 482 high school students and parents in several cities in West Java, Indonesia. From this research, it was found that the impact of information technology on awareness of parents and high school students to pursue the higher education: 1) most parents have the desire of their children to pursue the higher education and the level of education that is most chosen is undergraduate 2) the reason most parents choose to pursue their children to tertiary education is to pursue their dreams. Thus it can be concluded that the information technology has an impact on most parents and the high school students on the awareness to pursue the higher education.
Digital application in teaching musical traditional instrument for children
Authors: Apriani L , Julia J 
Published: October 2019

Abstract
The lack of learning media in the art of music in elementary schools is a barrier for teachers to teach the art of music. When learning music, students are often confused because they do not know the shape and sound of the instrument. This paper aims to analyze the use of Saron Digitals as one of the media solutions for learning music that can be used by teachers to be taught in elementary schools. This research method is carried out through the following stages: (1) introducing the Saron Digital application; (2) introducing the Saron Digital application feature; (3) use of Saron Digital applications; (4) study Saron using the Saron Digital application; (5) evaluating the learning process. The research subjects were grade 3 students in one of the elementary schools. The research subjects were 15 students. The results showed that using students from the Saron Digital application that did not know became aware of the shape and sound of Saron musical instruments. It can be concluded that technology can facilitate learning, teachers do not need to worry about the lack of learning media for the art of music.
Online scaffolding dictionary for children
Authors: Gusrayani D , Tatang D , Handayani S , Suherdi D , Sukyadi D 
Published: October 2019

Abstract
In teaching vocabularies to Indonesian children, scaffolding has not been a preferred choice yet. Teachers tend to use a simple method, write down and remember yet junior high school students require more concrete, fun, and challenging ways of penetrating the idea of new words inflowing their brain. Online scaffolding dictionary for children is purposefully designed to meet that ends. This application is easy to operate, and noticeable even for parents. One click and the children will surf down below merely words, to net their points of understanding. This is a one-click-many-result-innovation. Questionnaire was distributed to the users to find out the responses having activated the application. Teachers and parents were also interviewed. Developmental research is applied to frame all the needs; this new innovation is about to develop further and more sophisticated along with the feedbacks from all users. After designing, developing and evaluating the dictionary through several stages, the application is ready to be downloaded. One important assessment suggested by users that this online dictionary teaches students the process; it strengthens the concept of soft skills to be developed by human—to fight for what is expected.
Extending students ZPD with center learning and technology
Authors: Gusrayani D , Djuanda D , Sudin A 
Published: October 2019

Abstract
Kindergarten Students along with their golden age period attracts researchers to come along with many ideas on how to enhance the potential learning skills they should possess. This golden age period urges them to be assisted by optimal and proximal help from their surrounding adults. This research tries to reveal the potential of students’ ZPD in kindergarten level with Center learning and technology method (metode sentra) applied by this school since its establishment. The instrument involved is interview, class observation, and document analysis. Learning situation provided is as the teacher made optimal efforts to empower students’ learning situation involving the students themselves and their peers. This situation is the so called extending students ZPD. Property of the learner is referred to the condition of various but different features of students’ features are gathered by the teacher in supporting and establishing students’ self-empowerment, optimized by the learning center method applied. There are 5 learning center in TK Arasy: Preparation Center, Religion Center, Role Play Center, Science Center, and Art Center. The 5 centers were equipped with sufficient equipment in developing students’ multiple intelligences. Some findings revealed from this research: first, student turns into independent learners. Second, students’ skill and knowledge are developed significantly especially the imagination skill. Third, teachers admitted that they feel confident in teaching yet sometimes unsure about the chosen learning phases. The learning center made students’ ZPD worth developing.