Introduction

Author(s):  
John A. Adam

This book deals with rays, waves, and scattering and covers many of the mathematical concepts, structures, and techniques used to study them. The subject of rays is explored in an atmosphere–sea–earth sequence, while waves are examined via the reverse sequence earth–sea–atmosphere. The book also considers the relationship between the elegance of the classical Lagrangian and Hamiltonian formulations of mechanics and optics; Kepler's laws of planetary motion, developed from gravitational scattering; surface gravity waves; diffraction; acoustics; electromagnetic scattering, including the Mie solution; and the WKB(J) approximation and its application to some simple one-dimensional potentials. The book concludes with an analysis of the salient properties of Sturm-Liouville systems with particular reference to the time-independent Schrödinger equation. This chapter provides an overview of the rainbow directory, rays, waves, classical and semiclassical scattering, and caustics and diffraction catastrophes.

Jurnal Elemen ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 199-210
Author(s):  
Erfan Yudianto ◽  
◽  
Susanto Susanto ◽  
Sinta Priciliya ◽  
◽  
...  

Ethnomathematics is the relationship between culture and mathematics found in society's habits, where people have unconsciously applied mathematical concepts in their culture or habits. The custom referred to in this study is what is done by batik in making one batik sheet every time. The purpose of this study was to describe ethnomathematics on cassava leaves in the production house Daweea Batik Bondowoso East Java. This research is qualitative research with an ethnographic approach. The subject of this study was the craftsmen in the Daweea Bondowoso Batik production house. Data collection methods used are observation, interviews, and documentation. The observation was carried out by the researcher himself and assisted by two observers who were provided with observation guidelines. Interviews were conducted to artisans in Daweea Bondowoso batik production house, while the documentation was carried out by the researcher himself using a camera recorder. The results of this study indicate the existence of ethnomathematics in cassava leaves batik painting. Geometry concepts or elements found include points, lines, angles, flat shapes (rectangles, squares), congruence, concordance, equations, and geometric transformations (dilation).


Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.


2020 ◽  
Vol 1 (01) ◽  
pp. 13-20
Author(s):  
Dian Saputra

This study aims to find out the relationship between learning style and students’ knowledge aspect on Computer System Subject at SMK IT Rahmatan Karimah of  Central Bengkulu, the type of research is quantitative and the subject of research is grade X in SMK IT Rahmatan Karimah of  Central Bengkulu. Data collection techniques using observation, Questionnaire and documentation. Data analysis techniques used were Descriptive Analysis, and inferential Statistical Analysis. The results of visual learning style post-test were 11 people with a mean of 76.36, an auditory learning style of 8 people at a mean of 62.14, a kinesthetic learning style of 3 people at a mean of 50.33, apart from that (r x y = 2.35) and the magnitude of r is reflected in the table (r table = 0.4132). Then rxy > r table ie = 2.35> 0.4132. In other words, Ho is rejected and Ha is accepted. It has a significant relationship between the learning styles of students and students’ knowledge aspect on Computer System Subject of grade X TKJ in SMK IT Rahmatan Karimah of  Central Bengkulu


2018 ◽  
Vol 97 (1) ◽  
pp. 1-11 ◽  
Author(s):  
SangDong Lee

Queen Margaret (1070–93) has been the subject of much historical research. Previous studies of the queen and later saint have been undertaken from several different perspectives, including the biographical, institutional and hagiographical. In addition, some scholars have focused on her piety and later cult. Although a saint's miracles were one of the significant elements affecting the development of a cult, far less interest has been shown in the geopolitical importance of the miracles attributed to St Margaret and the relationship between the miracles and the saint's cult. The intention of this paper is to examine the miracles attributed to St Margaret and to identify their characteristics within the context of their contribution to, and influence in, the development of her cult.


Author(s):  
Jack Knight ◽  
James Johnson

Pragmatism and its consequences are central issues in American politics today, yet scholars rarely examine in detail the relationship between pragmatism and politics. This book systematically explores the subject and makes a strong case for adopting a pragmatist approach to democratic politics—and for giving priority to democracy in the process of selecting and reforming political institutions. What is the primary value of democracy? When should we make decisions democratically and when should we rely on markets? And when should we accept the decisions of unelected officials, such as judges or bureaucrats? This book explores how a commitment to pragmatism should affect our answers to such important questions. It concludes that democracy is a good way of determining how these kinds of decisions should be made—even if what the democratic process determines is that not all decisions should be made democratically. So, for example, the democratically elected U.S. Congress may legitimately remove monetary policy from democratic decision-making by putting it under the control of the Federal Reserve. This book argues that pragmatism offers an original and compelling justification of democracy in terms of the unique contributions democratic institutions can make to processes of institutional choice. This focus highlights the important role that democracy plays, not in achieving consensus or commonality, but rather in addressing conflicts. Indeed, the book suggest that democratic politics is perhaps best seen less as a way of reaching consensus or agreement than as a way of structuring the terms of persistent disagreement.


Fachsprache ◽  
2017 ◽  
Vol 33 (1-2) ◽  
pp. 36-60
Author(s):  
Mathilde Hennig ◽  
Dániel Czicza

The article aims to examine grammatical features and pragmatic concerns of communicating in the sciences. In the research of certain languages, it became common to explaingrammatical features such as the usage of passive voice and nominal structures by communication requirements such as objectivity and precision. With the assumption that communication in science is designed to help gain and spread new insight, the authors tried to integrate several approaches to pragmatic and grammatical features of communication. By discussing the relationship between the grammar of certain languages and of the corresponding common language, the article also places the subject of communication in the sciences in the discipline of language variation.


2017 ◽  
Vol 1 (2) ◽  
pp. 137
Author(s):  
Noorlela Binti Noordin ◽  
Abdul Razaq Ahmad ◽  
Anuar Ahmad

This study was aimed to evaluate the Malay proficiency among students in Form Two especially non-Malay students and its relationship to academic achievement History. To achieve the purpose of the study there are two objectives, the first is to look at the difference between mean of Malay Language test influences min of academic achievement of History subject among non-Malay students in Form Two and the second is the relationship between the level of Malay proficiency and their academic achievement for History. This study used quantitative methods, which involved 100 people of Form Two non-Malay students in one of the schools in Klang, Selangor. This study used quantitative data were analyzed using descriptive statistics and statistical inference with IBM SPSS Statistics v22 software. This study found that there was a relationship between the proficiency of Malay language among non-Malay students with achievements in the subject of History. The implications of this study are discussed in this article.


2014 ◽  
pp. 83
Author(s):  
Sabino de Juan López

RESUMEN En el artículo se ofrece una reflexión en torno a la educación y valores. Tras una referencia a los diferentes sentidos en que se puede plantear el problema en función de la forma como se puede entender la relación entre los dos sustantivos “educación” y “valores”, la reflexión se centra en algunos problemas relacionados con los valores en cuanto contenidos de la educación. Primeramente se refiere al problema del criterio en función del cual determinar los valores de la educación, concluyendo en que el criterio no podía ser ni de carácter a priori, ni empírico, sino “sintético”. A continuación, se afronta el problema del principio, de la fuente de los valores, o la concreción del criterio de los valores de la educación, entendiendo que éstos deberían ser determinados a partir del sujeto de la educación. Se concluye con la referencia a una exigencia de los valores de la educación, la configuración de una totalidad unitaria e interactiva. Palabras clave: educación, valores, fuente de valores, integración, cultura EDUCATION AND VALUES ABSTRACT The article offers a reflection on education and values. After a reference to the different senses in which one can pose the problem in terms of how you can understand the relationship between the two nouns “education” and “values”, reflection focuses on some problems related to the values in the contents of education. First, it concerns the problem of the criterion against which to determine the values of education, concluding that the criterion could be neither a priori in nature, not empirical, but “synthetic”. Herein, the problem of principle is faced, the source of values, or the realization of the criterion of the values of education, understanding that these should be determined from the subject of education. It concludes with the reference of a requirement of the values in education, setting up a unitary and interactive whole. Key Words: education, values , power values , integration, culture


2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Dwi Novita Sari ◽  
Putri Juwita

This study aims to improve the results of learning mathematics of elementary school students SDIT Deli Insani of class V on the subject matter of fractions by using number playing card media. The from of this study is classroom action research conducted in 2 cycles, using number playing cards at SDIT Deli Insani in class V Tanjung Morawa. The subjects of this study were the fifth grade students of SDIT Deli Insani, amounting to 30 students. This action was carried out in April 2018. Methods of collecting data using observation and documentation. The data analysis used is quantitative and qualitative analysis. The results of the study showed an increase in students' ability to understand concepts from the first cycle and second cycle. Percentage of increase in pre-action results, cycle I and cycle II students' concept comprehension ability that is 13.04% for indicators identifying number forms using number game cards (dominoes) and indicators solving problems in fractional form operations using dominoes 27.26%. the success indicator in cycle II reaches 80%. Thus the application of number game cards can improve students' understanding of mathematical concepts at SDIT Deli Insani in Class V.


2020 ◽  
pp. 9-27
Author(s):  
Małgorzata Obrycka

The issue stated in the title is an attempt to understand the profound changes that have taken place in the culture of ethical education related to the relationship between humans and nature. The subject of analysis is linked to the need to promote interpersonal and interspecies humanitarianism. The author refers here to the educational activities aimed at shaping attitudes of respect for all living beings. The theoretical plane covers the ideas developed within the framework of the trend known as post-humanism. In this paper, the stance is that upbringing in humanitarianism is a great capacity that must be developed in children and adults. This is an ethical capacity for a community-oriented and respectful coexistence.


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