bluuebunny/crossref_metadata_2025_split huggingface dataset:
Type of earthworm in the banana tree habitat
Authors: Budijastuti W 
Published: August 2019

Abstract
The purpose of this study was to evaluate the types of earthworms found in banana tree habitat in different areas. This research method is observational research. The sampling place was chosen in the banana tree habitat with the purphosive random sampling method. Sampling areas in 4 cities (Surabaya, Sidoarjo, Gresik and Bangkalan). The results showed that there were five types of earthworms found in Bangkalan, four types of earthworms were found in Gresik and Sidoarjo, three types of earthworms in Surabaya. Conclusion there are five types of earthworms found in banana tree habitat, namely Methaphire javanica, Amynthas robbustus, Methaphire postuma, Methaphire californica, and Pheretima recemosa.
BEM solutions to exponentially variable coefficient Helmholtz equation of anisotropic media
Authors: Azis M. I. 
Published: August 2019

Abstract
Boundary value problems (BVPs) governed by a Helmholtz type equation for anisotropic exponentially graded media are solved using Boundary Element Method (BEM). The variable coefficient governing equation is transformed to a constant coefficient equation which is then transformed to a boundary integral equation. The results show the convergence, consistency, and accuracy of the BEM solutions.
Stability analysis of mangrove forest resource depletion models due to the opening of fish pond land
Authors: Nugraheni K , Burhan M J I , Pancahayani S , Azka M 
Published: August 2019

Abstract
The existence of Mangrove Forest is very necessary for the cycle of the food chain of marine fauna and its ecosystem. Balikpapan City has several Mangrove forest conservation areas that contain some rare – protected species. In this paper, a mathematical model is formulated to examine the problem of decreasing Mangrove forest resources due to the population of Bekantan (Nasalis larvatus), and the land clearing for fish ponds in the area of Mangrove forest conservation areas. The cumulative density of Mangrove forest resources and density of Bekantan (Nasalis larvatus) are assumed to follow the logistic model with predator-prey types of non-linear interactions. The main focus of this paper is to develop a Mangrove forest model derived from assumptions on the forest resource model and direct observation in the Mangrove Graha Indah forest conservation area of Balikpapan city. Furthermore, the model was analyzed using the stability theory of differential equations and numerical simulations to obtain an illustration that the cumulative density of Mangrove forest resources and Bekantan (Nasalis larvatus) would be significantly decreased if the land clearing for fishponds was not controlled.
Analysis of spatial autocorrelation of diarrhea events in East Kalimantan in 2015-2017 using a local indicator of spatial autocorrelation
Authors: Hayati M N , Purnamasari I , Wahyuningsih S 
Published: August 2019

Abstract
Diarrhea is still a public health issue in developing countries, one of which is Indonesia. This is indicated by an increase in diarrhea morbidity rates from year to year. Therefore, it was necessary to conduct research related to diarrheal diseases. Factors that influence the incidence of diarrhea in an area depend on the condition of the environment or the surrounding area. Spatial autocorrelation is the correlation of a variable with itself based on space or can be said similarity of objects in space, both in terms of distance, time or region. Local Indicator of Spatial Autocorrelation (LISA) is a method for measuring and identifying spatial autocorrelation locally. The purpose of this study was to determine whether there is spatial autocorrelation in the incidence data of diarrhea in East Kalimantan in 2015-2017 by using LISA testing and to determine the level of vulnerability to the incidence of diarrhea in East Kalimantan. The results of data analysis with α = 10% indicated that there were spatial autocorrelations in several districts/cities in East Kalimantan in 2015, 2016 and 2017. The results of the analysis also showed that Samarinda City and Mahakam Ulu District were categorized as prone to diarrhea.
Prediction of the number dengue hemorrhagic fever patients in district Jombang Regency using transfer function model approach
Authors: Sediono  , Tjahjono E , Maulana T D 
Published: August 2019

Abstract
Transfer function describes the values of future prediction from output series (Yt
) based on its past value and also based on one or more input series (Xt
) as the dependent variables. Single input transfer function model is a transfer function model that use one variable as input series (Xt
).Then, this single input transfer function model was applied to make the model and forecast the number of dengue hemorrhagic fever (DHF) cases (Yt
) in Jombang based on rainfall (Xt
). From the model, it couldbe described that the number of dengue hemorrhagic fever cases in a month was affected by rainfall on that month, rainfall two month earlier, rainfall twelve month earlier, rainfall thirteen month earlier, the number of dengue hemorrhagic fever cases a month earlier, the number of dengue hemorrhagic fever cases twelve month earlier, the number of dengue hemorrhagic fever cases thirteen month earlier, and also residual value on that month. Based on the transfer function model result, it the number of dengue hemorrhagic fever cases in Jombang could be predicted for next 20 months. After comparing the prediction result and the actual data, we obtained that almost all the prediction results (75%) were valid.
Active learning of weightlessness with the bottle-and-water-jet demonstration: Which new experiments do students propose to test an alternative explanation?
Authors: Balukovic J , Slisko J 
Published: August 2019

Abstract
Students learn physics better if they are involved in active learning modes, consisting of different sequences of hands-on and minds activities. The usual way of teaching weightlessness is not adequate for students’ active learning. The concept is typically introduced through “thought experiment” with a free-falling lift in which a person standing on a balance reads “zero weight”. Although some physics textbooks ask students to explain why a water jet stops to flow out of a bottle in free fall, we couldn’t find any experimental study concerned with students’ explanations of this particular demonstration of weightlessness. Therefore, we designed and carry out a corresponding research with students of primary and high schools from Bosnia and Herzegovina and Serbia. The students were asked to explain in a paper-and-pencil format why water flows out of a bottle with a hole when the bottle is at rest? Why does water stop flowing out when the bottle is in free-fall? Propose an experiment that would show that your explanation is right. What should happen in that experiment and why? The students’ answers and drawings revealed many different alternative explanations. They show that active learning of weightlessness might be possible in physics classrooms.
Interdisciplinary science concept maps to orient middle secondary school students learning outcomes
Authors: Farcas L C , Caltun I , Caltun O F 
Published: August 2019

Abstract
The initial and continuing training of natural science teachers should be implemented in interdisciplinary contexts. This paper shows how concept maps can generate training activities in which teachers of various disciplines can discuss macro concepts such as water, air, wind, temperature, motion, power, energy, etc. mapping the students’ learning pathway. Drawing concept maps and discussing them in training sessions from the perspective of students, teachers and trainers can be a decisive professional experience in changing the ways of improving concepts representations of all the actors of classroom activities and educators.
Magnets and magnetic field around them: what can we learn from simple experiments
Authors: Dvořák L 
Published: August 2019

Abstract
Small neodymium magnets are useful tools enabling us to do a lot of experiments usable in physics teaching and learning. Simple experiments with these magnets can be done quickly and at minimal cost. Such experiments are usually used to demonstrate or investigate just qualitative features of magnetic field. However, simple experiments, when combined with small pieces of theory, offer much more than that. In the workshop, the participants went from very simple qualitative observations to experiments that, being still simple and low-cost, enable the measurement of the force between magnets and even to estimate the value of magnetic field B inside magnets and around them. The workshop was led in an inquiry-based style and offered a teaching-learning sequence that teachers can adapt for various levels of schools.
Space mishap as a stimulus context for thermal conduction exploration in secondary school
Authors: Komáromi A 
Published: August 2019

Abstract
A large body of literature underlines the relevance of personal involvement and in-context assignments in increasing student engagement in physics education at secondary level. The research-based teaching/learning experience offers different kinds of suggestions for physics education on the level of curricular proposals, on the level of feasibility of inquiry-based learning approaches, on the level of strategies and methods for learning environment settings, and on the level of conceptual understanding of students. During the activities, students find a good opportunity to discuss how heat is transferred, both on Earth and in space. Students discover through their own exploration what types of radiation space objects are exposed to in near-Earth orbits. By means of a “flipped classroom” methodology the students analyse radiant heat absorption and reflection. The activity was extended to learn about heat radiation incident on Earth and emitted by Earth. It was interesting to see the reaction of students when they realized that “radiant heat” has a wavelength, and that it is part of the electromagnetic wave spectrum. Tutorials and post-tests were used in order to gauge the students’ understanding of the processes involved, and in particular what their conception of heat is. Students proposed different materials for heat shields used in the experiment, and in this way we touched on the subjects of thermal insulation and heat capacity. This leads us to examine the inner structure of materials, and essentially the link between macro- and micro-world. Discussion of heat absorption is a way to introduce the concept of energy, and consequently the role of macro-micro models in material science processes description. Characteristics and main results of the intervention module will be presented together with data of the monitored learning process.
Developing second level students’ understanding of the inverse square law and electric fields
Authors: Moynihan R , van Kampen P , Finlayson O E , McLoughlin E 
Published: August 2019

Abstract
There are specific mathematical tools involved in building an accurate model of introductory electric field theory. Algebra operations, vectors, field lines, proportional reasoning and the inverse square law are all integral parts of gaining a complete understanding of an electric field. In this paper we present a small body of research, taken from a case study with a group of 14 upper second level students, in which they developed their understanding of the inverse square law, using a pre-test-tutorial-post-test tutorial lesson model. Students struggle to understand the inverse square law unless they are repeatedly exposed to it. Using the context of intensity, our students develop their understanding of the inverse square law using a variety of representational forms, such as diagrammatic, tabular / graphical and calculations using formulae. Using our pre-test and post-test results, our students showed gains in their reasoning used to explain the variation of intensity when an object is moved various distances from a source, which we attribute to their reasoning developed in the tutorial lessons. Additionally, students completed quantitative problems involving the inverse square law in the context of Newton’s gravitational law. Six weeks after the completion of the inverse square tutorial, our students completed a tutorial lesson, in which they applied their understanding of the inverse square law to Coulomb’s law and the electric field. Our results show that our students could apply the inverse square law to these contexts when guided, but some difficulties still remained, such as proportional reduction / increase based on variation of the distance, and transfer between representations, such as algebraic to graphical.
Flipped classroom in secondary school physics education
Authors: Finkenberg F , Trefzger T 
Published: August 2019

Abstract
This quasi-experimental pre/post-study with control group examines the effect of the flipped classroom method applied to basic physics courses at two German secondary schools (N = 150) in a three-month treatment. The focus of the study is the performance in a content knowledge test and the related non-cognitive attitudes as interest in the subject physics, motivation to do physics and the physics related self-concept. First results indicate that flipped classroom has a positive effect on the learning gain as well as on motivation and self-concept. Further analysis will look into parameters that moderate the effect of flipped classroom.
Collaborative Group Learning in a Swiss introductory physics class
Authors: Feldman G , Schiltz G , Vaterlaus A 
Published: August 2019

Abstract
We report on the implementation of the SCALE-UP collaborative pedagogical approach in a first-year undergraduate physics class at ETH Zürich. The performance of the students on various assessments was compared with identical assessments in a parallel lecture class in order to gauge the effectiveness of this approach. Surveys were also given to get feedback on how students were reacting to this innovative style of pedagogy.
Light the world and change its color: A case study in Italian secondary school using IBSE methodology
Authors: Adesso M G , Capone R , Del Sorbo M R , Fiore O 
Published: August 2019

Abstract
What color is it? It is not a trivial question: answer depends on the lamp used to light the world! Let’s fix a light and measure with our human instruments, eyes and ears, a colored and orchestral environment: may we distinguish, at the same time, all the colors and sounds? Here we show a case study using Inquiry Based Science Education (IBSE), a teaching methodology, focused on the wave-matter interaction in daily experience and some ways to detect it by our senses. IBSE methodology engages students eliciting investigation of physical phenomena. General expected outcomes are an improvement of students’ motivation and a more successful learning experience. We planned an educational path, based on investigation, for students attending the first year of high school. The course has been developed in four lessons (2.5 hours each) for a total of 10 hours. This path has been experimented in four different parallel classes. In each class, students have been divided into 5 or 6 groups. The first phase, “engage”, is a simple trick: try to guess the color of four cards lighted with a monochromatic beam, red, blue, or green, in the dark. Once a white light is turned on, students will be surprised to see the true colors of the cards. After this “engagement”, students “explore” interaction between wave and matter, accomplishing some tasks and trying to “explain” the observed phenomena. The third and most important step is to “extend”: students directly experience additive color synthesis, with attention to pointillism, to subtractive color synthesis, and to superposition of sound. Later, each group, as in a flipped lesson, looks for answers to preliminary questions, by investigation: ear and eye behaviour, differences between electromagnetic and sound waves, electromagnetic spectrum. ICT is a valuable support in this phase. A multimedia product is requested at the end of investigation. In order to “evaluate” this educational path, it has been proposed to think about the use of a monochromatic lamp to change a colored word in another one, without some yellow and red letters. A feedback questionnaire has been also used to evaluate the educational path. The results of the questionnaire show that students are satisfied with this new methodology and activities. Satisfactory results, however, depend upon teacher’s ability to motivate all students in attending classes.
Some reasons that influence dropout in a Physics Teachers Training program
Authors: Kussuda S R , Nardi R 
Published: August 2019

Abstract
There currently exist several countries experiencing problems related to the lack of teachers, as indicates the Organization for Economic Cooperation and Development. Part of this problem is related to the quantity of students that dropout teacher training programmes, reducing the quantity of teaching workforce. We conducted a research to understand the main reasons to former students to dropout a physics teachers training programmes. To obtain the data we applied an online questionnaire with 274 former students, 37 of them answered the questionnaire. Although this number represents 13.5% of the total, the main answers are recurrent, indicating that those could be similar to other former students. Through the analysis of the answers was possible to note that, although this physics’ teaching programme may be considered difficult among former students, such difficulties seem to be related to several factors, beside the complexity of the Physics as need to work during the morning or the demotivation that occurs within this programme. We argue that the dropouts seem to be more related to problems such as the pedagogical performance of the professors of Higher Education, than difficulties related the complexity of Physics.
Study of the implantation of an experiential approach to science teachers’ training in Francophone minority communities: results from the second phase of a three phases design research
Authors: Trudel L , Métioui A 
Published: August 2019

Abstract
To remedy the problems of science teaching in francophone minority communities in Canada, we propose an “experiential” approach to train future science teachers. In this regard, our research aims to conceive and identify the conditions for implementing such experiential training, as well as evaluate its effect on the development of science teaching skills, as part of a collaboration between a university education faculty and two high schools in a French minority environment. The experiential approach had been implemented in one physics education course in a teacher training program taught in a Canadian university. To assess the achievement of our research objectives, we used qualitative methods, following a design research model. We report here on the results of the second phase of a three phases design research process. As for the implantation in local minority settings, some key findings are reported here from the second phase. Finally, we conclude by stating advantages and limits of our research.
Seeking co-production of knowledge in alternating training: insights from DESCI first round of world cafés
Authors: Valente A , Pennacchiotti C , Smyrnaiou Z , Kotsari K , Petropoulou L , Tudisca V , Ricci F L 
Published: August 2019

Abstract
In the last years the debate on competences and their role in the development of a more inclusive societies and in promoting innovation processes has become increasingly crucial at European level. The European Commission identified 8 key competences (basic and transversal competences and soft skills) that have to be attained by all citizens during their learning process. Also employers require from their employees more and more these kind of skills, and this is true also in the scientific education and research context. Indeed “Communication, working with others, problem solving and other similar abilities are considered very important requisites for a recently graduated student by a large section of the research laboratories responsible.” Nevertheless, European school curricula bestow little attention to transversal competences and soft skills. In this framework DESCI1 project, funded by Erasmus + Program, aims to develop a methodological pattern for alternating training in secondary school systems, adopting participatory design methodologies based on a Living Lab environment, to improve the connection between school, research, enterprise and territory and to promote the development of soft and transversal skills in students, needed to allow them to foster the innovation process, to increase their employability, express themselves, acting consciously in the system and driving the innovation and social inclusion in their communities. The DESCI approach undergoes to a continuous and participated evaluation process, under RRI principles, meant in order to explore, in a process of co-creation of knowledge, the ongoing results of the project. The evaluation outputs emerged at this stage of the project confirm that, in the learning AT process, the DESCI approach promote the increase of transversal competences and soft skills in the students, mainly referring to those included in the 8 key competences identified by the EU Commission.
Conceptual metaphor in physics education: roots of analogy, visual metaphors, and a primary physics course for student teachers
Authors: Corni F , Fuchs H U , Dumont E 
Published: August 2019

Abstract
We show in what sense macroscopic physical science is a product of figurative (imaginative) structures of the human mind. Conceptual structure in physics is perception based and schematic and uses metaphoric, analogical, and narrative forms to extend direct perception and conception to cases of less directly accessible phenomena. For instance, a theory of the dynamics of heat can be rendered in a form analogous to that of fluids or electricity. We show how tools using visual forms of metaphors employed in macroscopic physical science can be designed and applied, and we briefly outline one application of the principles discussed here: a novel course for kindergarten and primary school student teachers.
Economical Comparisons of Interconnection Technology for Asynchronous AC Power Grids
Authors: An Byeonghyeon , Jeon Jin , Lee Minho , Park Taesik 
Published: August 2019

Abstract
There is growing interest in grid connections between different micro grids, countries, and the selection of interconnection method should be based on an economic analysis. This paper analyses the economics of VFT (Variable Frequency Transformer) and HVDC (High Voltage DC) and proposes an optimal grid interconnection method. The economic evaluation was conducted based on the new investment cost depending on the capacity of the facilities needed for the grid connection, and the feasibility study was carried out to find out which method is more advantageous economically.
An Integrated Energy Power Generation with Energy Storage System
Authors: Zhang Peng , Wang Yize , Wang Wei 
Published: August 2019

Abstract
How to consume new energy power generation is a very common problem, If we don’t take effective measures, the situation will become more and more serious. Through the application of new energy generation and storage energy management technology, can enhance the level of intelligent low voltage distribution with effectively alleviate this problem. This paper studied the basic control theory of new energy generation and storage system energy management technology, the software support platform based on dispatching automation, to advanced applications as a means to embody the control strategy, research and development of new energy generation and storage system to the management, provide technical support and the effective guarantee for the safe and stable operation of new energy power generation.