Concept Of Circle Research Articles

Into The Magic Circle

In this irregular, PhD student and clubgoer Ruby Schofield critically examines discourses around nightclubs, on the basis of her own mixed experiences. She engages Johan Huizinga's concept of a magic circle as a productive means to explain both the play-ground nature of a club, as well as the need to renegotiate the boundaries of club life, in order to keep it that way.

ETHNOMATHEMATICS IN THE RADAP RAHAYU DANCE AND ITS IMPLEMENTATION IN MATHEMATICS LEARNING

Radap Rahayu dance is an original dance from South Kalimantan, Indonesia. This dance is a cultural heritage of Banjar, South Kalimantan. It has ethnomathematics potential that needs to be studied. The study aimed to explore the ethnomathematics aspects of the Radap Rahayu dance. The subjects of this research were Banjarmasin cultural figures and artists, dance lecturers and dance teachers The four focuses of this ethnographic research are, finding the mathematical concepts in the movement, musical instrument accompaniment, clothing, and ethnomathematics implementation of the Radap Rahayu Dance in mathematics learning. Data collection techniques using Focus Group Discussion with observation, interviews, and elaboration of the three research subjects. The data analysis technique refers to Miles and Huberman, with data validity using source triangulation. The research results show four things. First, there is a concept of counting, measurement, reflection, circles, and triangles in the Radap Rahayu dance movements/varieties. Second, there is a concept of symmetry, a circle, and an integral symbol on the musical instrument accompanying the Radap Rahayu Dance. Third, there is a concept of a triangle, symmetry, parallel lines, a circle, and dilatation in the costume of Radap Rahayu Dance. And, the implementation of the ethnomathematics aspects of the Radap Rahayu Dance in Mathematics Learning is found in the student module and Worksheets, which contain project-based activities making mathematics more meaningful and fun. Keywords: Ethnomathematics, Radap Rahayu Dance, Mathematics Learning

Modeling Backlash-like Hysteresis and Feedforward Control of Tendon-Sheath Mechanism Pair with Arbitrary Shape: Excluding Distal Sensory Input

Abstract The tendon-sheath mechanism (TSM) has garnered attention for its versatile applications in soft robotics, robotic hands, and surgical robots due to its adeptness in transmitting force through tortuous and narrow channels. However, precise control of the TSM is challenging due to its shape-dependent deformation and force generation, highlighting the need to address shape variations in dynamic environments where direct measurement is impractical. This paper introduces a novel methodology leveraging the concept of the equivalent circle in TSM to model its shape under varying conditions. The equivalent circle substitutes an arbitrarily shaped TSM with a circle, whose radius is derived from TSM's deformation and forces measured at the proximal end during calibration. This approach provides a concise and effective framework for understanding and analyzing the distinct characteristics of TSM. Additionally, a control strategy is proposed, utilizing the estimated equivalent circle to adapt to dynamic environments. Experimental results demonstrate promising performance without distal end sensory feedback, with mean percentage errors (MPE) of 0.78% and 2.33% for predicting cumulated curve angle and equivalent circle radius, respectively. Moreover, by utilizing the equivalent circle to calculate and feedforward deadband, effective control is achieved. The root mean square error (RMSE) reduced from 1.31 mm to an average of 0.19 mm in two feedforward experiments, representing an average reduction of 85.5%. These findings shed light on effective control strategies for TSM, offering valuable insights for robotics and surgical applications where TSM shape configurations are uncertain and subject to dynamic change.

Circles of port sustainability: A novel method combining global comparability and local relatability in performance assessment

Ports are increasingly ‘greening’ operations to protect their ‘license to operate’ by integrating social-environmental considerations into their management and reporting on their sustainability performance. In this research, we develop a novel method for port sustainability performance (PSP) assessment that combines science-based knowledge with place-based contextualisation. Specifically, we address a recognised challenge of combining global (‘top-down’) techno-scientifically oriented indicators with place-based locally relatable (‘bottom-up’) contexts in sustainability performance, in addition to addressing limitations encountered in empirical verification. First, a critical evaluation of the international literature on port sustainability assessments is undertaken to distil commonalities in global performance indicators, and to identify typical frames used in the design of sustainability performance indices. We apply this learning, together with place-based experiential knowledge, to develop a science-based framework for a Port Sustainability Performance (PSP) Index that is explicitly aligned with the Sustainability Development Goals (SDGs). We then apply a co-design process to demonstrate local customisation of the index to derive place-based quantifiable measures and targets. Further, for easy-to-use empirical verification, a simple spreadsheet is applied to develop a flexible weighted scoring matrix. The matrix uses place-based rating systems for selected measures and associated targets, and aggregates allocated scores into informative outputs. Finally, the concept of Circles of Sustainability is adapted for ports to visually display sustainability performance, in alignment with related SDGs. This research contributes to bridging the science-practice divide in reporting on port sustainability performance.

The new paradigm of future cities? Facilitating dialogues between the 15-minute city and the 15-minute life circle in China based on a bibliometric analysis

Cities worldwide are facing increasing disturbances due to the long-lasting COVID-19 pandemic, the unpredictable climate change, and the intensifying geopolitical clashes. The uncertainties associated with the future drive a backlash against contemporary planning practices that center on growth-oriented agenda and placemaking to survive neoliberal inter-city competitions. A noticeable paradigm shift towards micro-scale and human-centric planning practices has gained traction. The 15-minute city model (FMC), which was proposed by Carlos Moreno in 2016 and went viral after the pandemic, has become a prominent concept in steering future city development. Interestingly, China has also embarked on a transition from physical-oriented to human-centric planning, which is featured by the concept of the 15-minute life circle (FLC) and its planning guidelines first promulgated in Shanghai in 2016. While both concepts have thrived since then, few scholarly attempts have been made to advance the mutual learning process. This research aims to facilitate a dialogue between the two research communities, starting with a systematic literature review of the FMC. Using a bibliometric analysis, it maps the development and evolution of research on the FMC and identifies four key themes: sustainability, resilience, utopian city models, and technology. Based on the findings, the research discusses the complexity and current trends in the FMC literature. It compares the human-centric and chrono-urbanism planning principles in FMC and FLC cases, highlighting the differences in origins, priorities, and planning principles. The study concludes with three directions for mutual learning: integrating resilient thinking, synthesizing theoretical development and practical accumulation, and adopting a new urban regeneration perspective.

Classroom Teaching Practices and Reflections Guided by Mathematical Core Competency -- A Case Study of Basic Properties of Circles Teaching Design

With the development of educational reforms in the new era, the Ministry of Education has introduced various new policies to adjust traditional educational approaches. The reform of new curriculum standards places the cultivation of subject core competencies at a key position in subject teaching, gradually advancing the educational system in China to new heights. Under the background of the new curriculum reform, focusing on the cultivation of core competencies as the starting point and foothold of education can better leverage the educational function of disciplines. Taking the teaching design of Basic Properties of Circles in junior high school mathematics as an example, students go through the process of forming the concept of circles, thereby cultivating their ability to think and solve problems using mathematical thinking, and improving the quality of classroom teaching.

Eksplorasi Etnomatematika pada Permainan Tradisional Congklak di Kelurahan Srengseng Sawah

Ethnomathematics contributes greatly to the improvement of mathematics learning, because it relates to students' experiences in everyday life that touches the realm of local cultural arts so that students become more understanding of the mathematical concepts explained. This study aims to explore the concept of mathematics in the traditional game of congklak in Srengseng Sawah Village. This research is a qualitative research with an ethnographic approach. The data collection techniques used are observation, interview and documentation. The instruments in this study were researchers, observation guidelines, interview guidelines and documentation. Based on the research analysis and discussion of the history and philosophy of the traditional game of congklak, mathematical concepts in the game of congklak such as the concept of flat shapes, namely semicircles, circles, rectangles and spatial shapes, namely half a ball; the concept of transformation in this case reflection / mirroring; the concept of arithmetic calculation operations including addition, subtraction, multiplication and division. The game also has cultural and philosophical values.

THE USE OF TEACHING AIDS FOR CIRCLE TOPICS AMONG SECONDARY SCHOOL TEACHERS

Teaching aids assume a significant role in facilitating the instruction of the subject matter of Circles by secondary school educators. The subject of Circles encompasses the examination of angles and measurements, which are fundamental components of Mathematics. Despite the prior introduction of the concept of circles, numerous students still encounter challenges when attempting to solve mathematical problems related to this topic, even at the university level. The objective of this investigation was to explore how the incorporation of teaching aids can enhance the classroom milieu, particularly with regard to the topic of Circles. This quantitative study encompassed the participation of 350 mathematics teachers within secondary schools situated in the Kuantan district. The selection of participants was executed through purposive sampling. Data collected via questionnaires were subsequently subjected to analysis employing the Statistical Package from Social Science (SPSS), specifically version 29 of IBM. The findings demonstrate that teachers employ various forms of teaching aids, ranging from conventional methodologies to advanced computer software and interactive whiteboards. This study underscores the necessity of adopting a systematic and continuous approach, while also enhancing digital literacy and expanding technological access among teachers and students, thereby fostering an environment conducive to learning. Consequently, educators must possess extensive knowledge pertaining to digital resources to effectively impart comprehensive understanding to students about the topic of Circles.

ANGLE BETWEEN INTERSECTING CIRCLES

The article demonstrates the concept of orthogonal circles and solves fundamental theorem problems involving right angles between circles. Special attention is paid to the orthogonality of two circles as in a right triangle, as well as the perpendicularity of the Apollonian circle to the respective circles. These problems can be considered both in math olympiads and in the study of geometry courses.

Quantum Technologies: a Hermeneutic Technology Assessment Approach

This paper develops a hermeneutic technology assessment of quantum technologies. It offers a “vision assessment” of quantum technologies that can eventually lead to socio-ethical analysis. Section 2 describes this methodological approach and in particular the concept of the hermeneutic circle applied to technology. Section 3 gives a generic overview of quantum technologies and their impacts. Sections 4 and 5 apply the hermeneutic technology assessment approach to the study of quantum technologies. Section 5 proposes distinguishing three levels in the analysis of the creation and communication of social meanings to quantum technologies: (a) fictions, (b) popularization, and (c) scientific journalism. Section 6 analyzes the results and defines some lines of action to increase social acceptance and trust in quantum technologies. The aim of this paper is to contribute to the debate on quantum technologies by enhancing the reflection on them and their potential, as well as illustrating the complexity of technological innovation and the need to shape it.

The Sylvester problem and uniqueness sets in classes of entire functions

In this paper, we study the problem of finding, by a chosen sequence of complex numbers tending to infinity, the widest possible class of entire functions in a given scale for which this sequence is a uniqueness set. Within the framework of this general problem, we establish uniqueness theorems in various classes of entire functions, distinguished by restrictions on the type and indicator under a refined order. In particular, we complement the previously proven uniqueness theorem, using the concept of the Sylvester circle of the indicator diagram of an entire function of exponential type. We discuss the accuracy of the results obtained and their connection with known facts.

Phenomenological Approach for the Application of the FOAP Concept of the Vicious Circle of Ill-Health

Background: The Field (F) Observation(O) for Accurate(A) Practicum(P) Concept of Vicious Circle of Ill- Health is an informative and innovative concept that focuses on how human activities within the environment reinforce each other in ways that contribute to vicious circle of ill-health. It is intended to change the perspective of community dwellers to embrace the new ideas of adapting healthy environmental practices to prevent and/or control the vicious circle of ill-health among them.Method: This study used the innovative qualitative research method that focused on the realist and meta-narrative reviews. The following databases were used as search engines: Google Scholar, OpenMD, RefSeek, BASE, Semantic Scholar, Academia, ResarchGate, and Google Search Engine.Result: The four stages of the phenomenological approach to the FOAP concept were vividly explained with stated characteristics. These four stages, when cleverly used, can make huge impacts on the lives of community dwellers. The various risk factors of vicious circle of ill-health, under the illustration of the Causal Theory, were greatly elaborated with all cited evidences to back the various claims.Conclusion: Most Liberians look healthy in an unhealthy environment; they get sick from contracting preventable diseases from the unhealthy environment; they go to hospitals or clinics for quality treatment against the preventable diseases; and they return to the same unhealthy environment that made them sick in the first place. This is the vicious circle of ill-health the FOAP Concept addresses. The FOAP Concept is a novel tool that will help national stakeholders and community dwellers successfully address the issue of unhealthy environmental practices.

Learning Circle Using Gobak Sodor Game Context In Eighth Grade

This research aims to produce a learning trajectory that can help students understand the concept of circles using the Indonesian Realistic Mathematics Education (PMRI) approach. This research takes the context of the traditional game "gobak sodor" which developed from an informal form to a formal form. The research method used is a research design that involves three stages, namely preparing for the experiment, experimental design, and retrospective analysis. This research was carried out in eighth grade class in one of Junior High School in Palembang involving 34 students. PMRI is the basis for the learning context and activities in this research. Data collection includes taking student work results, interviews, and observations. The results of the research produced a learning trajectory that supports understanding the concept of circles from informal to formal form, which involves one activity of playing "gobak sodor," collecting data through observation and measurement, as well as interpreting data and observations. The results of the learning activities show that the series of activities carried out can help students understand the concept of circles.

Палеоэстетика Д. Тернера в контексте герменевтики и философии истории

The article discusses a new book by Derek Turner, Paleoaesthetics and the Practice of Paleontology, which is the first outline on the given topic with a fairly wide coverage of current research literature. In a sense, Turner’s work can be viewed as an invitation to a dialogue between researchers who are interested in the philosophical and methodological problems of geology in general and paleontology in particular. The presented application of Turner for the construction of the theory of aesthetic values in the earth sciences requires a comprehensive consideration and study by different researchers. The aim of this article is to determine the place of Turner’s concept of paleoaesthetics in the general field of Western European philosophy. The article proves that Turner, like the classic of hermeneutics Gadamer, points to a close relationship between epistemic (historical) and aesthetic values in cognition. The dependence of our aesthetic perception of a fossil on the knowledge of its history, which Turner points out, can be described without distortion of meaning in terms of hermeneutics, namely, through the concept of the hermeneutic circle and the role of prior knowledge in historical knowledge. Also, Turner’s appeal to reflection on metaphors in paleontology, as on the poetic dimension of knowledge, also correlates with the idea of Hayden White, a classic of the philosophy of history of the 20th century, about the need to reflect on the poetic dimension of historical knowledge, as well as the fundamental role of the poetic in the construction of historical works. In addition, in his desire to make paleontology more exploratory and to move away from the descriptive nature of studies of the history of the Earth, Turner conducts the same operation as R. J. Collingwood, who strictly separated the descriptive history of “scissors and glue” from scientific history. In the author’s opinion, Turner’s replacement of the “textual record” metaphor in relation to fossils with the “investigative tool” metaphor is similar in meaning to the replacement of the “source” metaphor by the “evidence” metaphor that Collingwood produced in relation to historical initial data. Based on this, it is concluded that the similarity of the ideas of Turner and the classics of hermeneutics and the philosophy of history gives reason to believe that paleoaesthetics in the form proposed by Turner should be considered as one of the sections of hermeneutics and philosophy of history. Such an understanding of the place of paleoaesthetics in the world philosophical tradition, on the one hand, will contribute to the use of the achievements of the main trends in philosophy for the development of philosophical paleoaesthetics; on the other hand, turning to classical philosophical works will help to avoid doubling the meanings and building similar classical philosophical concepts about geological (paleontological) knowledge.

Coordination-free Safety Messages Dissemination Protocol for Vehicular Networks

Many vehicular safety applications depend on the rapid and reliable dissemination of safety messages to vehicles at risk. In order to allow sufficient reaction time for emergency events in adverse driving and road conditions, disseminating safety messages over multi-hop vehicles is often needed. However, owing to the capacity limitation of the shared control channel, disseminating safety messages in highly mobile and dynamic vehicular network conditions is challenging. In this article, a Zero-Coordination Opportunistic Routing (ZCOR) algorithm is proposed to deliver mission-critical life safety messages over limited target geocast regions. ZCOR is scalable and robust over dynamic VANET conditions with low rebroadcast overhead. In addition, ZCOR exploits neighbor knowledge for coordinationfree opportunistic packet relay using the novel concept of Circle of Trust (CoT), which defines the range of reliable local neighbor knowledge collection. The performance of ZCOR is evaluated through extensive and realistic simulations capturing time-correlated vehicular channel characteristics.

Igniting Curiosity: E-LKPD with a Scientific Twist on Circle Concepts

The purpose of this study is to develop E-LKPD with a scientific approach to increase students' interest in learning circle material at MI Al Hidayah Mangli Jember which is valid. Judging from the current development of education, educators are required to be able to innovate in making and creating various learning teaching materials. However, based on observations, the learning teaching materials used have not been effective and have not been able to accommodate students to be active in the learning process. The development of Student Worksheets (E-LKPD) with a scientific approach to circle materials to increase students' interest in learning is an effort to overcome problems found in the learning process. This is also to help students better understand the learning material, especially circle material, because it is a difficult material to raise. The development of this E-LKPD uses the R&D stages of the ADDIE model, namely Analysis, Design, Development, Implementation, and Evaluation. The subjects of this research consist of: First, 3 validator lecturers, namely: media experts, material experts, and linguists. Second, one mathematics teacher and 30 students of class VI MI Al Hidayah Mangli Jember. The data collection instruments used are teacher interview questionnaires, student observation questionnaires, validity questionnaires, and practicality questionnaires. The validity test result of the e-LKPD is 90% with a very valid category and the result of the practicality test is 91% with a very practical category. So that the e-LKPD developed has met the criteria and can be used in the mathematics learning process.

Towards Translational (Neuro)Hermeneutics of Landscape: Theoretical and Methodologial Considerations on Translational Analysis

Abstract There is a growing sense among translational hermeneuticists that their assumptions pertaining to the act of translation as seen from the hermeneutical perspective should align them more with a cognitive field. Taking the above view into account, the aim of this paper is to introduce the idea of translational (neuro)hermeneutics into the field of translation studies. The first part of the paper is dedicated to the concept of (neuro)hermeneutics as based on Gambino and Pulvirenti (2019) approach to literary studies, which is then followed by the theoretical and methodological issues associated with philosophy of landscape taken from the perspective of new cultural geography and of embodiment. The second part of this paper presents the theoretical and methodological considerations as regards translations of landscape descriptions and their analysis, with emphasis on the concept of the (neuro)hermeneutic circle. The paper concludes with suggestions as to further advancement within the field of translational (neuro)hermeneutics.

EKSPLORASI ETNOMATEMATIKA PADA BUDAYA ARAK JODHANG NYADRAN MAKAM SEWU KABUPATEN BANTUL

Ethnomatematics is an approach in learning that links mathematics with a culture. Applying ethnomathematics in class is very important, because it can make it easier for students to understand mathematical material by linking it to real world problems. The Arak Jodhang culture is one of the cultures in the form of activities of troop convoys wearing soldier's clothing carrying jodhang. In this culture, various mathematical concepts are found. The researcher is interested in conducting this research with the aim of exploring the mathematical concepts found in the Arak Jodhang Nyadran Makam Sewu, Bantul Regency. The method used in this study is explorative with an ethnographic approach. Data collection was carried out by means of observation, documentation, interviews, and literature study. The results of this study indicate that there are various mathematical concepts in the Arak Jodhang Nyadran Makam Sewu culture and can be used in teaching mathematics in class. The concepts found include: the concept of circles, triangles, quadrilaterals, geometric shapes, straight lines, and geometric transformations.

Eksplorasi Konsep Matematika pada Eduwisata Taman Jam Gadang untuk Pembelajaran Matematika Siswa SD

Eduwisata jam gadang park, is a historic and interesting tourist spot, especially its beauty. Jam gadang park is one of the eduwisata found in the city of Bukittinggi. In addition to enjoying its beauty, this eduwisata can be used as a learning resource for students, especially elementary school students in the city of Bukittinggi. The purpose of this study was to explore the mathematical concepts that exist in the edu-tourism park jam gadang and then used as a learning resource for elementary school students. This type of research is qualitative with an ethnographic approach. Data were obtained by researchers through observation, interviews and documentation. The results of the exploration of the mathematical concepts of eduwisata taman jam gadang include; the concept of circle, square, rectangle, triangle, rhombus, clock number, and purchase price, selling price, profit and loss (social arithmetic). The mathematical concepts in this edu-tourism park can be used by teachers as a source of learning mathematics for elementary school students. The use of eduwisata jam gadang park as a learning resource can foster students' love of mathematics and local culture.

Non-Imaginary unit Circle and Distribution Odd Natural Numbers

This paper introduces a non-Imaginary unit circle partitioning as proof for the distribution of odd natural numbers in relation to an imaginary unit circle in a complex plane. First, we will introduce the concept of a non-imaginary unit circle and its relation to an imaginary unit circle in a complex plane. Then we will go through some examples to prove that for any N odd natural number at N/2, we only have the imaginary part for any complex number on the complex plane if we use our technique of portioning for the non-imaginary unit circle.