bluuebunny/crossref_metadata_2025_split huggingface dataset:
Desain Pembelajaran Materi Himpunan Dengan Pendekatan Realistic Mathematics Education (RME) Untuk Kelas VII
Authors: Manurung Mika Meitriana , Windria Hening , Arifin Samsul 
Published: July 2020

The topic of the set is a basic concept in mathematics and its relationship is close to our daily life. However, some studies in Indonesia have found that the students have difficulties in solving the set problem. This can be due to the pattern of mathematics teaching in schools. This study aims to provide a design of learning in the set topic with Realistic Mathematics Education (RME) approach. The research questions are: (1) How is the design of mathematics learning in the topic of the set using the RME approach? (2) How do students learn the topic of the set by using the RME approach? This research method is design research with one cycle in SMP Dasana Indah Tangerang. The subjects were 24 students with one focus group, 5 students who had no errors in the initial test. Data of research obtained from sound recording, video, photos, and Student Activity Sheet, then be analyzed by comparing the Hypothesis of Trajectory Learning and Trajectory of Actual Learning. This study produces the Theory of Local Instruction, with four lessons, namely: (1) Determining the set and not the set; (2) Finding the concept of set of universe, subsets, empty set, and describing the models; (3) Finding the concept of intersection, union, and illustrating the models; (4) Find the concept of complement, difference, and describe the models, and use the models to solve the story problem. In the learning process, through grouping games and describe the model, student learning the notion of set enthusiastically and actively. Keywords: design research, set, realistic mathematics education approach
Efektifitas Pembelajaran Dengan Pendekatan Contextual Teaching And Learning (CTL) Untuk Meningkatkan Kemampuan Pemecahan Masalah Matematis
Authors: Murnaka Nerru Pranuta , Anggraini Betta , Surgandini Arumella 
Published: July 2020

This research is motivated by students' mathematical problem-solving abilities. One way to improve students' mathematical problem-solving abilities is with the CTL learning approach. The purpose of this research is: 1) to know whether the average ability of mathematical problem solving of students who get learning with CTL approach is higher than the average problem-solving abilities of mathematical students who obtain conventional learning; 2) to find out whether the average mathematical problem-solving ability of the students who acquired the learning with Contextual Teaching and Learning (CTL) approach is higher than the minimum criterion value (KKM). This research type is quasi-experiment. The research design used is Nonequivalent Control Group Design. This research was conducted at SMP Negeri 1 Simpang Renggiang, East Belitung Regency in the academic year 2015/2016. Sampling was done by cluster random sampling. The sample in this research is class VII. 2 as the experimental class and class VII.3 as the control class. The research instrument used is a valid test instrument in the form of a matter of pretest and posttest in the form of a description. Data were analyzed using a non-parametric statistic test. The results of the research have shown that the average problem-solving ability of students who acquire mathematics learning with CTL approach is better than students who follow the conventional mathematics learning, the average problem-solving ability of mathematical students who gain learning with CTL approach less than or equal with KKM. Keywords: Mathematical problem solving, CTL approach, quasi-experiment, cluster random sampling
Pengungkapan Efektivitas Model Pembelajaran Melalui Anava Dua Faktorial
Authors: Arigiyati Tri Astuti , Istiqomah Istiqomah 
Published: July 2020

This study aims to determine the effectiveness of the learning model that is influenced by the level of students' initial abilities and the combined influence (interaction effect) between the learning model and the students' initial level of ability to the students' mathematics learning outcomes. The learning model has a central function in learning, namely as a tool and a way to achieve learning goals. The type of research used in this study is quasi-experimental. The research subjects used as the subject of the trial were Yogyakarta State and Private Middle School Students. The object of this research is the students' initial abilities and learning outcomes of mathematics by using Write and Conventional Think Talk learning models. Data collection techniques used are test techniques and documentation techniques. Data were analyzed by two factors, both for initial ability test scores and learning outcome test scores and post anava test using Scheffe Test. The results of the study with α = 5% indicate: 1) The Think Talk Write learning model is more effective than the conventional learning model. (2) Learning outcomes of high-skilled students are better than students who have moderate and low initial abilities, and (3) there is no interaction between learning methods and students' initial level of ability based on learning outcomesKeywords: Effectiveness, Think Talk Write, AnavaAbstractThis study aims to determine the effectiveness of the learning model that is influenced by the level of students' initial abilities and the combined influence (interaction effect) between the learning model and the students' initial level of ability to the students' mathematics learning outcomes. The learning model has a central function in learning, namely as a tool and a way to achieve learning goals. The type of research used in this study is a quasi-experimental. The research subjects used as the subject of the trial were Yogyakarta State and Private Middle School Students. The object of this research is the students' initial abilities and learning outcomes of mathematics by using Write and Conventional Think Talk learning models. Data collection techniques used are test techniques and documentation techniques. Data were analyzed by two factors, both for initial ability test scores and learning outcome test scores and post anava test using Scheffe Test. The results of the study with α = 5% indicate: 1) The Think Talk Write learning model is more effective than the conventional learning model. (2) Learning outcomes of high-skilled students are better than students who have moderate and low initial abilities, and (3) there is no interaction between learning methods and students' initial level of ability based on learning outcomes. Keywords: Effectiveness, Think Talk Write, Anava
Dark matter with n-body numerical simulations
Authors: Chacón Jazhiel , Vázquez J. Alberto , Gabbasov Ruslan 
Published: July 2020

The development of numerical N-body simulations have allowed studying the formation process and evolution of galaxies at different scales. This paper presents the fundamental concepts of N-body systems applied to the cosmological evolution of the ¤-Cold Dark Matter (¤CDM) model. To perform structure formation in the Universe, we provide an introduction to the basic equations and their implementation on the GADGET-2 software. We also present a simple guide to modifying this code. First, we briefly describe the dark matter in the Universe as well as the theoretical and experimental basis of the ¤CDM model. Then, we focus on the simulation codes and provide the equations that govern most of the N-body simulations to model the dark matter. We describe the Smoothed Particle Hydrodynamics method used for simulating the gas, star dynamics, and structure formation in these simulations. Then, cautiously, we guide the reader to the installation of GADGET-2 on a Linux-based computer, as well as to carry out a couple of examples to operate the code. Finally, by using a computational cluster, we show several results of a large structure simulation, analyze the outputs to display the matter power spectrum, and compare the outcome with theoretical predictions.
El problema de la Braquistócrona en el cilindro S1 × R con varias vueltas
Authors: Carrion S. H. L. 
Published: July 2020

Presentamos brevemente el problema del braquistócrona en un plano vertical. A seguir presentamos la formulación paramétrica del problema de la braquistócrona sobre la superficie de un cilindro vertical de radio R y encontramos la curva que resuelve este problema. Enseguida formulamos el problema del tautócrona en el cilindro y demostramos que la curva tipo braquistócrona encontrada anteriormente tiene conportamiento tautócrono, esto es, dos partículas sueltas del reposo de puntos distintos de la curva braquistócrona, llegan al punto más bajo de la trajectoria en forma simultánea.Se verifica también que la curva tipo braquistócrona en un plano vertical (cicloide invertida) es límite de la curva tipo braquistócrona encontrada en la superficie cilíndrica cuando el radio delcilindro tiende al infinito. Posteriormente analizamos el problema del braquistócrona entre dos pontos fijos A y B sobre la superficie cilíndrica con la condición adicional de que la partícula antes de llegar al punto final B deve dar um cierto número de vueltas previamente definido. Encontramos la curva que resuelve este problema y adicionalmente encontramos uma relación matemática que determina cuantos vueltas como máximo puede haber si fijamos los valores de las coordenadas del punto inicial (A), final (B), el radio del cilindro y g (la aceleración de la gravedad).
God, Value, and Ontological Gratitude: On the Axiological Foundations of Worship
Authors: Davis Andrew M. 
Published: July 2020

[Figure: see text] What kind of God is most worthy of worship? This question is historically significant to open, relational, and process theological traditions. In considering this question anew, I advocate a particular axiological approach in light of the deeper question of divine necessity: What is the nature of divine necessity? What reasons or explains God’s existence? Why do God and a world exist at all? Different responses confront us: (1) reasonless brute fact, (2) unrelenting divine power, (3) logical necessity, and (4) utter mystery. Each of these responses fails to ground a God worthy of worship. They also fail to illuminate what worship is. Through resonant insights of John Leslie, Keith Ward, A.C. Ewing, A.N. Whitehead, and Nicolas Rescher, I argue for a fifth response: (5) axiological necessity. Worthiness of worship is only to be assigned to that God whose reason for being is found in the creative supremacy of its own Value. Value thus also reasons the existence of the world, human beings, and human purpose as worshipful beings. The axiological foundations of God and the world constitute worship as “ontological gratitude”—a gratefulness for existence—which manifests itself in a value-creative life.
GAME ADDICTION AND ITS EFFECTS ON TEENAGERS’ MENTAL HEALTH
Authors: Saputra Muhamad Disra , Marjohan Marjohan , Safrizal Safrizal 
Published: July 2020

The aim of this study is to describe the game addiction behavior and its effect on mental health of teenagers. This study used qualitative method. The data collection was carried out in three ways: interview, observation, and documentation. The data were analyzed by using Miles and Huberman’s theories. In order to maintain the validity, the researcher did triangulation techniques. The results of the study showed that online game addiction had an effect on several domains, namely a sense of dependency that was marked by disability to withdraw from the desire to play games. Accordingly, the gamers frequently declared that their life without online gaming was empty. They were intolerance to the use of time, as they said that the time needed to play online games was uncertain, and their disability to control their emotions due to defeat during the games.
Mutation spectrum of Duchenne muscular dystrophy patients in Indian population
Authors: Mathur Priyanshu , Agarwal Ansh , Goyal Kashish , Mathur Avisha 
Published: July 2020

Background: Duchenne muscular dystrophy (DMD) is the most common X-linked neuromuscular disorder in children. Since the novel, DMD therapies are mutation-specific, so detection of mutation is of paramount importance in planning the treatment of DMD patients. Objective: The objective of this study was to find different mutations present in DMD patients in Indian population. Materials and Methods: This study was a hospital-based retrospective observational study conducted from December 2018 to December 2019 in the pediatric department of a tertiary hospital of western India. A total of 52 children age 2–16 years, presenting with progressive muscle weakness, were included in the study. DMD multiplex ligation-dependent probe amplification (MLPA) for 79 exons was done for detection of deletion/duplication for all patients. Whole DMD gene sequencing was done for those who were found MLPA negative for DMD gene mutation (deletion/duplication). Results: Our study states that most of the DMD patients presented with deletions (84%) or duplications (11%) in the dystrophin gene, and remaining due to point mutation. The study shows that most of the mutations occur due to deletions (67.30%) in DMD gene at distal hotspot 45–52 exons and deletions (15.38%) in DMD gene at proximal hotspot 10–19 exons. In addition, to expanding the mutational spectrum of DMD, these results establish improved mutations data in the Indian population. Conclusion: The novel developed therapies for DMD are mutation-specific, so molecular diagnostic tests are very important in diagnosis and categorization for the prevalent mutations in the Indian population.
Mencermati Populisme Prabowo Sebagai Bentuk Gaya Diskursif Saat Kampanye Politik Pada Pemilihan Presiden 2019
Authors: Ritonga Alwi Dahlan 
Published: July 2020

Penelitian ini mengkaji tentang penggunaan populisme sebagai gaya diskursif salah satu calon presiden pada Pemilu 2019 di Indonesia yaitu Prabowo Subianto. Fenomena global yang menunjukkan munculnya kemenangan pemimpin-pemimpin populis di hampir seluruh dunia ternyata membuat Prabowo juga tertarik untuk memainkan gaya kepemimpinan populis untuk meraup simpati masyarakat. Prabowo memainkan isu populis ketika melakukan kampanye politik sebagai gaya diskursif. Retorika yang dilakukan oleh Prabowo ketika berkampanye sangat sarat dengan isu-isu populistik. Penelitian ini membuktikan bahwa Prabowo Subianto menggunakan isu populisme sebagai gaya diskurif ketika berkampanye pada saat pemilu. Peneliti akan melakukan analisis dengan mengacu pada teori Cas Mudde (2007) yang mengemukakan karakteristik dari populisme terwujud dalam tiga ciri yaitu anti – kemapanan (anti-establishment) atau anti elit, otoriterisme, dan nativisme. Objek penelitian ini akan terfokus pada Prabowo sebagai aktor politik yang sedang memainkan isu populisme sebagai gaya diskursif dengan mencermati konten-konten yang ia sampaikan ketika berkampanye. Teknik pengumpulan data akan menggunakan data-data sekunder berupa surat kabar, media cetak maupun kanal berita elektronik serta bahan lain yang mendukung penelitian. Data-data tersebut akan dianalisis dengan menggunakan pendekatan deskriptif-kualitatif.
Patients’ case scenario as well as approaches and strategies adopted to manage COVID-19 pandemic at Aligarh Muslim University, Aligarh, India
Authors: Rahman Syed Ziaur , Khan Saif 
Published: July 2020

Corona virus Disease 2019 (COVID-19) is a severe acute respiratory infection caused by corona virus-2 (SARS-CoV-2). It originated from Wuhan city of China in December 2019 and spread like a wild fire to the entire globe and was declared as global pandemic by WHO on March 11, 2020. With no available cure and vaccine, this disease has taken a mammoth toll on the human life; therefore, SMS (‘Social Distancing’, use of ‘Mask’ and regular hand washing with ‘Soap’) has emerged as a sole tool to prevent its spread. The Indian government declared the first lockdown from March 25th 2020 with subsequent second, third and fourth lockdowns up to 31st March 2020 to decrease the disease transmission and flatten the disease transmission curve. Aligarh Muslim University is one of the prestigious central and residential universities in India. It is located in Aligarh district adjoining national capital region. The university has an attached tertiary care ‘Jawaharlal Nehru Medical College Hospital’. This narrative review discusses the various steps and procedures taken up by the university and hospital administration, other functionaries, faculty members and doctors in tackling the serious pandemic until 22nd June 2020. The proactive role of administration, dedication and hard work of health care professionals and innovation of some academicians has given a new vista of opportunities to tackle this global health pandemic. The recovery rate of coronavirus patients at AMU hospital is recorded as 71.9%, which is much higher than national average recovery rate (56%). Thus, AMU model gives some positive insights to fight the current global pandemic.
Bangladesh Journal of Medical Science Vol.19(0) 2020 p. S 28-S 35
Respon Tanaman Selada Merah (Lactuca Sativa L.) Terhadap Larutan Hara (AB Mix ) Pada Instalasi Horizontal Sistem Hidroponik
Authors: Satriawan Dedi , Aprillia Dwi Resti 
Published: July 2020

This study aims to determine the response given by the red lettuce plant to the provision of nutrients in the form of nutrient solution (AB Mix) on the horizontal installation of the hydroponic system. The study was conducted on December 20, 2017 until February 16, 2018 at the PKK Gardens Education Center in Bengkulu province. Seeding process of Red Lettuce Seedlings is carried out for 14 days then transferred to a net pot at the installation in the Greenhouse. Fertilizers with the Fiora A and B Brands are dissolved to be mixed in a nutrient bath with a capacity of 3000 L with a nutrient density of 500 ppm in the Greenhouse to be distributed to the horizontal installation of the hydroponic system inside the Greenhouse. Then growth observations were carried out on 10 plant samples with parameters of leaf length, leaf width, number of leaves, stem height, andstem diameter for 30 days. The results obtained by sample 1-10 have an average growth and development that is not much different. The maximum leaf length and leaf width parameters are in samples 2 and 3. While the highest number of leaf strands in sample 3 is 22 strands with an average of 18 strands and sample 4 has the highest stem height parameter of 3.5 cm with an average height 2.7 cm. The largest stem diameter in sample 4 is 4.1 cm with an average of 3.38 cm. The response of red lettuce after the last week showed symptoms of leaves that are less red with relatively more withered body.
John Bowlby på besök i 1950-talets Sverige – en udda fågel i svensk barnpsykiatri
Authors: Nelson Karin Zetterqvist , Van der Horst Frank , Van der Veer René 
Published: July 2020

The mismatch between John Bowlby and post-war Swedish child psychiatry: Account of a research visit In the first half of 1950, the British psychiatrist and psychoanalyst John Bowlby visited France, Sweden, the Netherlands, and the USA to gain information about the state of the art in the care of homeless children. e World Health Organization published Bowlby’s conclusions as Maternal Care and Mental Health (1952). e article aims to present an account and discussion of Bowlby’s weeklong visit to Sweden, based on previously unpublished notebooks and letters. e analysis shows a clear mismatch between Bowlby’s ideas and those of his Swedish hosts working in child psychiatry and social care. At rst sight, Bowlby seemed to align with the Swedish psychoana- lytically oriented child psychiatrists, while rejecting those Swedish experts who represented a biological approach with ideas about heredity, but it was more complicated than that. Bowlby also appreciated the methodological rigor and statistical methods of the latter current. What he did not appreciate, however, was that both Swedish currents, despite their mutual disagreements, shared a similar view of the importance of the environment for child development that was much broader than his own. For Bowlby’s hosts, environmental factors such as housing, schooling, parental care, number of siblings, social contacts, etc. were all important for the understanding of poor mental health and social maladjustment in childhood. As also becomes clear from the title of his book, Bowlby rejected such a broad approach and focused exclusively on mother-child bon- ding as determining children’s mental development and health. is mismatch between Bowlby and the Swedish experts explains why Bowlby paid only scarce attention to Swedish views in his WHO report, why this report and his later ideas about the importance of mother-child attach- ment initially met with little enthusiasm, and why he remained a ”queer fish” in Sweden.
Numerical Study over the Effects of a Designed Submerged Breakwater on the Coastal Sediment Transport in the Pescara Harbour (Italy)
Authors: Gallerano Francesco , Palleschi Federica , Iele Benedetta 
Published: July 2020

In 1997, in front of the Pescara Harbour (Italy), a detached breakwater was constructed. In the successive years, the sediment transport due to the combined action of waves and coastal currents, in the area between the detached breakwater and the entrance of the Pescara Harbour, produced an accumulation of about 40,000 m 3 of sediment per year. In this paper, the causes of the accretion of the bottom elevation in front of the Pescara Harbour entrance and the effects produced by the existing detached breakwater are investigated. The effects on the sediment transport of the introduction of a new submerged breakwater designed to protect the entrance of the harbour from sediment siltation are investigated. In particular, the ability of the designed submerged breakwater, located orthogonally to the longshore current, to intercept the aforementioned solid material and to significantly reduce the accretion of the bottom in the area in front of the harbour entrance, was numerically verified. Numerical simulations were carried out by means of a model of the bottom-change composed of two sub-models: a two-dimensional phase resolving model that is used to calculate the fluid dynamic variables changing inside the wave period and a second sediment transport sub-model to simulate the bottom changes, in which the suspended sediment concentration is calculated by the wave-averaged advection–diffusion equation. The equations of motion, in which the vector and tensor quantities are expressed in Cartesian components, are written in a generalised curvilinear coordinate system. The fully nonlinear Boussinesq equations are written in an integral form and used to simulate the velocity fields.