Two-dimensional Figures Research Articles

Exploring geometry and measurement in the Perjuangan Subkoss Garuda Sriwijaya Museum: An ethnomathematics study

The Museum of Perjuangan Subkoss Garuda Sriwijaya is a museum that preserves the history of South Sumatra’s struglle against the Dutch and Japanese colonialists. This research aims to obtain the results of an ethnomathematics study from the Museum of Perjuangan Subkoss Garuda Sriwijaya regarding historical, philosophical, and mathematical aspects and implement it in the Merdeka Curriculum in mathematics for elementary schools. This research employs an ethnographic approach with a qualitative descriptive approach, utilizing observation, interviews, documentation, field notes, and data triangulation. The analysis techniques include data reduction, data presentation, verification, and conclusions drawings. The study involved three informants who had direct interaction with the Museum of Perjuangan Subkoss Garuda Sriwijaya. The results of this research shows that ethnomathematics studies offer several insights: the historical aspect introduces local history and culture through artifacts that supported the struggle during the physical revolution; the philosophical aspectteaches the values ​​of caring, cooperation, creativity, and diversity within society; and the mathematical concepts reveals the concept of geometry, including area, perimeter, volume of both two-dimensional figures and three-dimensional figures, and length measurement.

Song Media Improves Mathematics Learning Outcomes of Elementary School Students on Two-Dimensional Figures

The current problem is that mathematics is complex because it relates to formulas and arithmetic. This impacts the low mathematics abilities of elementary school students in Indonesia, so they must be improved. Based on this, this research aims to analyze the influence of song media on the mathematics learning outcomes of third-grade elementary school students. This type of research is a quasi-experimental research with a one-group pretest-posttest design. The subjects of this research were a total of 36 students. The method used to collect data is a test. The instrument used to collect data is the test question sheet. The technique used to analyze data is inferential statistical analysis. The results of the research show that the use of song media influences learning outcomes in flat-figure mathematics. The test results show that there are differences in learning outcomes between students who use song media and students who do not use song media in learning mathematics. It was concluded that song media can improve mathematics learning outcomes in third-grade students, especially in mathematics learning.

Analysis of numeration literacy ability in solving hots questions on two-dimensional figure material fifth-grade students

Analysis of numeration literacy ability in solving hots questions on two-dimensional figure material fifth-grade students

Measuring Societal Impacts of Cybersecurity

Cybersecurity is more important than ever. All facets of society, including critical sectors such as financial, healthcare, energy, and transportation, are very reliant on cyberspace. Information and communications technology have become more and more relevant in organizations and are crucial elements in organizational learning and networked development and resilience. This study focuses on the analysis and findings of a cybersecurity questionnaire on the quantitative side of the survey contemplate mainly cybersecurity competences of the personnel in the participants’ companies. The data was analysed with principal component, correspondence analysis, and the Euclidean distance two-dimensional figures. The extraction method was Principal component analysis to extract 11 factors, with more than 25 iterations. Correspondence analysis shows that the private and public non-authority sectors prefer workers with communication and collaboration skills and an ability for situational awareness. Private subsidiaries prefer leadership skills. The results show that the Societal Impact Assessment Toolkit questionnaire can be used in organizations or projects to assess the societal impact of their cybersecurity products and services. The questionnaire will be developed to-ward a standardized method, which will require collecting answers from larger numbers of respondents for further evaluation and testing it with ap-propriate qualitative methods. This will add to the body of knowledge on the societal impacts of cybersecurity. The tool is a very practical contribution for companies, while the continued use and the ensuing analysed data that be-comes collected from large numbers of respondents becomes a contribution to theory.

Analisis Kesulitan Guru Matematika dalam Menghadapi Mathematics Learning Loss di SD Karuwisi Kota Makassar

The research is an experimental study aimed at describing the effectiveness of the Learning Loss method in teaching two-dimensional figure material in Mathematics to class V students at SD Karuwisi in Makassar City. The population consisted of all class V students, with the experimental class being taught using the Learning Loss learning method, selected through simple random sampling. Data collection included measurements of Mathematics concept understanding, student activities during learning, and student responses to the learning materials. The data on student activities and responses were analyzed using descriptive analysis, while the data on Mathematics concept understanding were analyzed using both descriptive and inferential analysis. The results reveal that the implementation of the Learning Loss method is effective for Mathematics learning in two-dimensional figure material for class V students at SD Karuwisi Makassar City based on the following aspects: (a) the average posttest score for Mathematics concept understanding is higher than 70 (Minimum Completeness Criteria), and the average normalized gain score is greater than 0.29 (medium category); (b) the average score of student activities in each session is more than 2.49, indicating a tendency towards active engagement; and (c) the average student response score is greater than 2.5, indicating a tendency towards positive feedback. Therefore, it can be concluded that the Learning Loss learning method is effective for teaching Mathematics in two-dimensional figure material to class V students at SD Karuwisi Makassar City.

Realistic Mathematics Education (RME) Approach to Material on the Characteristics of Two-Dimentional Figures Using the Reog Ponorogo Performance in Elementary Schools

: It is critical to approach mathematical education correctly. This is because many students believe math is a tough subject to learn. This problem arises because many teachers teach mathematics in abstract terms. This is a qualitative descriptive study using Graveimeiijeir's design research method. The research was designed to prove the truth of the allegations made in the learning trajectory or HLT (Hypothetical Learning Trajectory) and their impact on students' understanding by applying the RME (Realistic Mathematics Education) approach to the material on the characteristics of two-dimensional figures, with Reog Ponorogo performance media and worksheet serving as a guide for student activities. This study was conducted on class 3B students at MI Ma'arif Darul Ulum Pondok. The research topic is a 6-student group in a classroom. The research stages included preparation, execution in the classroom, and data analysis. Based on this research, it can be seen that the stages of learning activities using the RME approach are based on the stages contained in the iceberg theory, namely, stages of real-world situations (situations), models that describe problem situations (model of), models for solving problems (model for), and formal mathematics stages using Reog Ponorogo performance media can make it easier for students to understand material regarding the characteristics of two-dimensional figures.

Lattice-Based Generation of Euclidean Geometry Figures

We present a user-guided method to generate geometry figures appropriate for high school Euclidean geometry courses: a useful starting point for an intelligent tutoring system to provide meaningful, realistic figures for study. We first establish that a two-dimensional geometry figure can be represented abstractly using a complete, lattice we call a geometry figure lattice (GFL). As input, we take a user-defined vector of primitive geometry shapes and convert each into a GFL. We then exhaustively combine each these ‘primitive’ GFLs into a set of complex GFLs using a process we call gluing. We mitigate redundancy in GFLs by introducing a polynomial-time algorithm for determining if two GFLs are isomorphic. These lattices act as a template for the second step: instantiating GFLs into a sequence of concrete geometry figures. To identify figures that are structurally similar to textbook problems, we use a discriminator model trained on a corpus of textbook geometry figures.

Riccati–Bernoulli sub-ode method-based exact solution of new coupled Konno–Oono equation

Nonlinear partial differential equations (NLPDEs) have emerged as a major focus of study in a variety of nonlinear science disciplines. This is because in general, mathematical, physics and engineering problems may be stated by NLPDEs. It may be noted that a specific kind of exact/analytical solution called traveling wave solutions for NLPDEs has great significance. In this regard, this paper addresses the traveling wave solution to the new coupled Konno–Oono equation (NCKOE), a set of NLPDE. A traveling wave transformation and the Riccati–Bernoulli sub-ode method (RBSOM) are used here to retrieve the exact/analytical traveling wave solution of the NCKOE. By using the above-mentioned approach, NLPDEs can be updated toward a collection of algebraic equations. Further, different types of solitary wave solitons, Trigonometric function solutions, Hyperbolic soliton solutions and dark bright solitons to the NCKOE have been successfully retrieved. Importantly, the newly derived solutions adhere to the main equation when they are inserted into the governing equations. Furthermore, through an appropriate selection of parameters, three-dimensional and two-dimensional figures are presented for physical illustration of the obtained solutions. These visual representations serve to showcase the effectiveness, conciseness and efficiency of the applied techniques.

Mental rotation and language in autism spectrum disorder.

Though visuospatial skills are often considered a relative strength in autism spectrum disorder (ASD), unexplained difficulties relative to neurotypical (NT) peers have also been observed. Dissociations between spatial cognition and language skills in ASD may explain these difficulties given that these systems are linked in NT individuals. The current study examined performance on a mental rotation task that systematically varied stimulus features and the degree to which performance was associated with language in ASD relative to NT peers. Participants were children and young adults with ASD and 25 pairwise age- and IQ-matched NT peers (p's>0.53). The mental rotation task involved four conditions: two-dimensional (2D) abstract figures, three-dimensional (3D) abstract figures, 2D common objects, and 3D common objects. Structural language was measured using the grammar subscale from the Test of Language Development: Intermediate adapted for Norwegian. Mixed-effects model results indicated that autistic individuals were less accurate and had slower reaction time across mental rotation task conditions than NT peers. Language was associated with mental rotation accuracy for both groups across conditions, but with reaction time only for the NT group. The current study demonstrated selective associations between language and performance on a classic spatial cognition task in autistic individuals. Namely, there was a dissociation between language and in-the-moment efficiency in the ASD group, and this dissociation may reflect a broader dissociation between visuospatial and language systems.

Summative assessment planning in the Kurikulum Merdeka on two-dimensional figure materials

Summative assessment planning in the Kurikulum Merdeka on two-dimensional figure materials

The Exploration of Geometrical Concept in Batik Pamekasan

Indirectly, mathematical themes can be found throughout Indonesia's unique culture, one of which is mathematics in batik cultural items. Exploring ethnomathematics will be really beneficial. Apart from acquiring the concept of mathematics in Indonesian culture, it can also sharpen Indonesian culture's sense of love for the nation. The purpose of this study is to describe the philosophical meaning of the geometrical concepts contained in Pamekasan batik, the geometrical concepts contained in Pamekasan batik, and the implementation of Batik pamekasan as the context in learning geometry. This is ethnomathematics study which gather the data by observation and interview. The interview held two regions in Pamekasan with four informants. As a result, scholars aim to conduct an ethnomathematics examination of traditional Pamekasan batik. This research shows that aside from the Batik itself, the mathematical objects found in Batik each have their own meaning and hopes. As a result, mathematical motifs such as the point that depicts a rice or maize seed have philosophical significance. Meanwhile, reflection reveals that human life requires balance. Each mathematical object in the pattern has its own meaning. Meanwhile, geometrical objects in Batik Pamekasan are two-dimensional figures such as circles, rectangles, squares, lines, points, angles, and curves. In addition, transformative geometry like as rotation, reflection, and translation exist in Batik Pamekasan. Besides, batik pamekasan can be used as the context in learning geometry. This can be seen from the learning outcomes that was written in Merdeka curriculum. Moreover, problem-based learning and project-based learning are two models that support ethnomathematics-based learning.

Two-Dimensional Nye Figures for Some Micropolar Elastic Solids

The paper is devoted to problems related to two-dimensional Nye figures for micropolar continua. The representation technique known from studies on crystallography for 4th, 3rd and 2nd rank tensors is employed by two-dimensional matrices, supplied by relationships between their elements. Such representations are commonly used to simplify a script of the equations of athermic micropolar elastic solids. This method allows us to graphically represent micropolar constitutive tensors and pseudotensors in the form of specific two-dimensional blocks. The Nye figures for the micropolar elastic solids are obtained. The Nye figures enables us to discriminate anisotropic solids and figure out general anisotropic, hemitropic, isotropic, and ultraisotropic continua.

Pengembangan E-LKPD Interaktif Berbasis Liveworksheet pada Materi Bangun Datar Kelas IV SD

This study aimed to produce interactive E-LKPD products based on live worksheets on two-dimensional figure material in grade IV SD, with the number of samples used by 20 students. The method used is Research And Development (R&D), referring to the ADDIE development model (Analyze, Design, Development, Implementation and Evaluation). Based on the research that has been done, the analysis of the material validation obtained a score of 80 with the category "Eligible", and the display expert validation obtained a score of 104 with the category "Feasible". Meanwhile, from the students’ results, Responses scored 1,075 with an average acquisition of 53.75. From the learning outcomes test using the pre-test and post-test, The pre-test results obtained a score of 1,330 with an average acquisition of 66.5, While the post-test results obtained a score of 1,540 with an average score of 77. Therefore, it can be seen previously and currently using the live worksheet-based interactive E-LKPD above. Thus, this live worksheet-based interactive E-LKPD is feasible for the learning process.

Parametric design tools and how to take advantage of it in 3D sculptural design

The design was distinguished in Late Twenty-First Century With new and new methods Through which the ability to adapt all technical media in the formation of two-dimensional and three-dimensional figures and shapes was achieved .Which led to the emergence of endless sets of design ideas characterized by the heterogeneity of design forms and design solutions that preceded it. The designer could not access these creations in various architectural and artistic fields only through computer programs, especially those related to the activation of mathematical logic and what is known as algorithms in the formation and construction of the form, which led to the emergence of the "parametric direction" and the problem of research is summarized in the extent of the influence of parametric on the design The research aims to shed light on the emergence of parameter to shed light on the concept of parameter and its tools the research takes the approach (descriptive and analytical) spatial boundaries of some countries of the world, for example, but not limited to since the appearance of parameter until now, and the researcher offered a formative reading of some objects Museum parametric sculpture and a formative reading of some parametric sculptural objects in the open air One of the results of the research is that the sculptor, through the use of parametric, is able to design works for display internally in facilities or externally in squares and gardens, and that the parametric artist has knowledge of the elements that must be taken into account when designing models for museum display or garden display and outdoors, and the researcher recommends the need to pay attention to contemporary techniques in the field of Arts and direct scientific research in the field of Arts in general and sculpture in particular to discuss recent developments and discoveries in the fields of design and implementation of models in different countries of the world.

Prediction of optimal 3D printing orientation using vertically sparse voxelization and modified support structure tomography

PurposeIncreasingly 3D printing is used for parts of garments or for making whole garments due to their flexibility and comfort and for functionalizing or enhancing the aesthetics of the final garment and hence adding value. Many of these applications rely on complex programming of the 3D printer and are usually provided by the vendor company. This paper introduces a simpler, easier platform for designing 3D-printed textiles, garments and other artifacts, by predicting the optimal orientation of the target objects to minimize the use of plastic filaments.Design/methodology/approachThe main idea is based on the shadow-casting analogy, which assumes that the volume of the support structure is similar to that of the shadow from virtual sunlight. The triangular elements of the target object are converted into 3D pixels with integer-based normal vectors and real-numbered coordinates via vertically sparse voxelization. The pixels are classified into several groups and their noise is suppressed using a specially designed noise-filtering algorithm called slot pairing. The final support structure volume information was rendered as a two-dimensional (2D) figure, similar to a medical X-ray image. Thus, the authors named their method modified support structure tomography.FindingsThe study algorithm showed an error range of no more than 1.6% with exact volumes and 6.8% with slicing software. Moreover, the calculation time is only several minutes for tens of thousands of mesh triangles. The algorithm was verified for several meshes, including the cone, sphere, Stanford bunny and human manikin.Originality/valueSimple hardware, such as a CPU, embedded system, Arduino or Raspberry Pi, can be used. This requires much less computational resources compared with the conventional g-code generation. Also, the global and local support structure is represented both quantitatively and graphically via tomographs.

Ethnomathematics: Two-Dimensional Figure Geometry Concept in the Balla Lompoa Traditional House in South Sulawesi

Ethnomathematics: Two-Dimensional Figure Geometry Concept in the Balla Lompoa Traditional House in South Sulawesi

Students’ Response, Learning Interest, and Conceptual Understanding Ability of Two-dimensional Figures in Junior High School: A Study on the Use of Quizizz App

Students’ Response, Learning Interest, and Conceptual Understanding Ability of Two-dimensional Figures in Junior High School: A Study on the Use of Quizizz App

Gas detection strategy to suppress flow rate interference baesd on semiconductor sensor dynamic temperature modulation measurement

Semiconductor gas sensors are widely used in industry, commerce and other fields. Flow rate has great influence on its response, but there was no breakthrough research progress at present. Usually, the interference is overcome by suppressing the expression of flow rate information at the output of the sensor. In this paper, a new research idea is put forward, which uses the ability of expanding output information of dynamic temperature modulation method to express the influence of flow rate on sensor. A typical case of butanone detection by SnO2 sensor was taken as the main experiment. By analyzing the microcosmic characteristic difference between flow rate and concentration in dynamic response, the change rule of dynamic response with flow rate change can be grasped, thus eliminating its interference to qualitative analysis. On the basis of dynamic temperature modulation, PCA and LDA are used to reduce the dimension of data, and the distribution law of two-dimensional score figure is obtained about the change of concentration and flow rate. In addition, the method is validated by using ethyl ether and toluene, and the same experimental phenomena are obtained. The results show that it is not only feasible but also has certain universality to use dynamic temperature modulation method to suppress the influence of flow rate on quantitative analysis.

Exploration of the Sultan Mahmud Badaruddin Jayowikramo Grand Mosque in South Sumatra: An ethnomathematics study

This study aims to explain the relevance of ethnomathematics research and the two-dimensional figure shapes in the building of the Grand Mosque of Sultan Mahmud Badaruddin Jayowikramo Palembang. Sultan Mahmud Badaruddin Jayowikramo Palembang Grand Mosque is located in Palembang, Indonesia. The method used in this study was qualitative research with an ethnomathematical approach. The research subjects were the foundation's general secretary, supervising secretary, and administrative staff. Researchers used A data collection technique in multiple processes, such as observation, documentation, and interviews. The data analysis techniques used data reduction, display, and drawing inference. As a result, it was shown that each part of Sultan Mahmud Badaruddin Jayowikramo Palembang Grand Mosque has a mathematical concept of two-dimensional figures and many shapes of two-dimensional figures from the architecture of the Grand Mosque.

New optical soliton solutions to the coupled fractional Lakshmanan–Porsezian–Daniel equations with Kerr law of nonlinearity

This article studies the optical soliton solutions of the coupled fractional Lakshmanan–Porsezian–Daniel equations with kerr’s law nonlinearity based on the complete discriminant system of cubic polynomials. By means of traveling wave transformation, the fractional Lakshmanan–Porsezian–Daniel equations are simplified into two ordinary differential equations. Then, according to the classification of the roots of cubic polynomials, the optical soliton solutions of the fractional model with Kerr’s law nonlinearity are traversed. Then new traveling wave solutions are obtained, including the rational solutions, triangle function solutions, implicit function solutions and Jacobian elliptic function solutions, and the corresponding solutions are shown in two-dimensional and three-dimensional figures. Compared with previous related research, the exact optical soliton solutions of the LPD equation system for nonlinear Kerr’s law presented in this study are more completely and clearly classified, and researchers are easier to obtain these solutions.