Concept Of Triangle Research Articles

Art crime: the challenges of provenance, law and ethics

ABSTRACT Authenticating artworks can be difficult in the absence of reliable records. Record artwork prices at auction and sales through galleries incentivises criminal practices by exploiting vulnerabilities intrinsic within the process of provenance records. Consequently, falsifying provenance documents is a common method for legitimising and enabling the sale of stolen or forged art. In this context, and utilising Cohen and Felson’s crime triangle concept, an absence of capable guardianship arguably occurs when provenance research is inadequate, facilitating criminal activity. The ability to authenticate an artwork provides a key art crime prevention strategy to constrain illegitimate art from entering legitimate art collections. Using a case study research method, this paper investigates the contemporary conditions in which provenance research is performed. Future directions of provenance research practices are also discussed, including the increased use of databases and the emerging role of blockchain technology.

Students' Mathematical Understanding of Online Learning: Evaluation of Triangular and Rectangular Materials

The purpose of this research is to find out a comprehensive picture of students' mathematical understanding in the online learning process, especially in the triangle and quadrilateral material. The study was conducted on 20 students in MTs. Nurul Islah Gegelang. The qualitative research method was chosen. Interactive analysis is applied to obtain in-depth information related to interpreting research findings. Data collection is done by using zoom meeting. The research data are in the form of test scores for mathematical understanding abilities, observation sheets related to the online learning process carried out and in-depth interviews to determine students' mathematical understanding abilities. The results of the study showed that, out of 20 students, only 8 students scored 30 and 12 were below. The ability of students' mathematical understanding in the online learning process was still very poor, especially in the concept of triangles and quadrilaterals. Students' understanding is still limited to memorizing properties without understanding in detail the characteristics of each flat shape. Students still have difficulty in applying formulas to triangles and quadrilaterals in solving problems.

Media and audiences in historical and sociological perspective

What role do audiences play in the formation of the media? What influence do consumer practices have on media? This article explores the relationship between media and audiences from a historical and sociological perspectives. Using a literature review on audiences in media and communications history, this paper analyses the role of audiences in the formation of media and outlines the key terms and concepts for understanding the audiences of different media from a historical perspective. As media studies is an important part of the social sciences, conceptualising the audiences as a key part of media processes is an essential part of understanding media, including their history. It is through a sociological perspective that we can assess the importance of listeners, viewers and readers for the media development. The main terms used in media studies and media education for audience research are discussed. The concept of the media triangle is described in detail to assess the significance of audiences to media history. The interaction between ‘old’ and ‘new’ media is then described in order to understand historical trajectories. The next section focuses on the analysis of the influence of audiences on the formation of cultural consumption practices of different media such as the press, phonograph, cinema, radio and television broadcasting, and digital media. The key terms used in this article are imagined community, media domestication, implied audience, collective and individual consumption and participatory culture. In the conclusion, paper stresses out the co-existence of the applied concepts in the current media environment as the result of media and communications development since the late 19th century.

A DOSE to compare the level of performance between construction projects

Abstract The aim of this paper was to compare the level of performance (success) of construction projects between selected countries based on the concept of iron triangle. Following this, the major construction delays, cost overruns and quality factors were identified through an in-depth review of previous research works conducted in Denmark, Nigeria and Gaza Strip. The aggregate impacts of these factors were computed and compared between these countries. The results show that in the case of Denmark, the aggregate impact of the factors responsible for delay, cost overrun and poor quality was found in the impact interval between [0.60–0.80], but in the case of Gaza Strip and Nigeria, the aggregate impacts were found in the impact interval between [0.80–1.0]. This shows that construction projects in Denmark are found to be performed better relative to Nigeria and Gaza Strip.

Solving a Triangle in Teaching Primary School Mathematics

The paper studies solving a triangle in primary school mathematics education. It proposes a system of problems reflecting the classification of the concept of triangle according to the sides and the angles. Each subsystem of a given main system includes a basic problem with generalized formulation and a sample solution followed by problems illustrating the basic problem. The methodological analysis encompasses some didactic components – short description, construction/drawing, sample solution, necessary component concepts, component pieces of knowledge and component problems. All drawings in the study have been made by using the mathematical software GeoGebra in order to ensure dynamism and clarity, and subsequently to achieve easier understanding of a problem and finding out its solution.

Etnomatematika: Eksplorasi Uma Lengge Untuk Pembelajaran Matematika Di Sekolah

This research was conducted to explore the elements of mathematics (ethnomathematics) contained in the Uma Lengge building that is located in Bima, West Nusa Teggara (NTB), Indonesia. The research used a qualitative method with an ethnographic approach. The data were obtained from literature studies, observation, and documentation. Observation and documentation were used to identify and explore the elements of mathematics (ethnomathematics) contained in the Uma Lengge building, literature studies are used to find out more about the cultural values that exist in the uma lengge building as an application in learning mathematics. The results show elements of mathematics (ethnomathematics) in the uma lengge contain plane figure namely the concept of square, rectangle and triangle, concept of parallel and perpendicular lines, concept of geometry namely triangular prism and concept of similarity in triangle. The implication of this research is that the cultural elements contained in the uma lengge building can be used in mathematics learning applications in schools. Keywords: ethnomathematics, uma lengge, math learning

Pseudo-Heronian triangles whose squares of the lengths of one or two sides are prime numbers

The authors introduced the concept of a pseudo-Heron triangle, such that squares of sides are integers, and the area is an integer multiplied by $2$. The article investigates the case of pseudo-Heron triangles such that the squares of the two sides of the pseudo-Heron triangle are primes of the form $4k+1$. It is proved that for any two predetermined prime numbers of the form $4k+1$ there exist pseudo-Heron triangles with vertices on an integer lattice, such that these two primes are the sides of these triangles and such triangles have a finite number. It is also proved that for any predetermined prime number of the form $4k+1$, there are isosceles triangles with vertices on an integer lattice, such that this prime is equal to the values of two sides and there are only a finite number of such triangles.

Chemical and Physical Activation Using a Microwave to Increase the Ability of Activated Carbon to Adsorb Dye Waste

This study aims to develop an android-based application to calculate the amount of fuel adjusted to the distance and speed of the ship based on the trajectory (way point). The calculation of distance in this application uses the concept of a spherical triangle which is used in voyage navigation. This development adopts the Waterfall model with the stages of Requirement Engineering, Design and implementation, Testing, Release and Maintenance. At the product review stage, it involves software experts (to provide criticism and suggestions for improvement), then testing is carried out by comparing the results of calculations using applications with manual calculations and ECDIS (electronic Chart Display Information System). The test results show that there is no significant difference between the results of calculations using the application with manual calculations and ECDIS. Thus, this application can be used to calculate the amount of fuel needed according to the distance traveled and the speed of the ship based on the selected trajectory.

Development of Fuel Calculation Applications Android Based for Ship Operations

This study aims to develop an android-based application to calculate the amount of fuel adjusted to the distance and speed of the ship based on the trajectory (way point). The calculation of distance in this application uses the concept of a spherical triangle which is used in voyage navigation. This development adopts the Waterfall model with the stages of Requirement Engineering, Design and implementation, Testing, Release and Maintenance. At the product review stage, it involves software experts (to provide criticism and suggestions for improvement), then testing is carried out by comparing the results of calculations using applications with manual calculations and ECDIS (electronic Chart Display Information System). The test results show that there is no significant difference between the results of calculations using the application with manual calculations and ECDIS. Thus, this application can be used to calculate the amount of fuel needed according to the distance traveled and the speed of the ship based on the selected trajectory.

ABSTRAKSI REFLEKTIF SISWA SEKOLAH MENENGAH PERTAMA PADA MATERI SEGIEMPAT DAN SEGITIGA

The purpose of this study is to determine a person's ability to perform mental activities mechanically in associating new information received with previously owned information (reconstruction) which is a reflective abstraction. The process of reconstructing the concepts of quadrilaterals and triangles by students uses the mental mechanism approach of APOS theory (interiorization, encapsulation, de-encapsulation, coordination). The process can be known by observing students and analyzing the results of student work, starting with determining 1 class to be given a mathematical ability test. 29 students were present when the math ability test was given. The results of the mathematical ability test were analyzed and then found 2 students of different sexes with moderate ability. The first student is male and the second student is female, hereinafter referred to as the research subject, then the research subject is given the task of quadrilateral and triangle. The results showed that female students had done all stages of reflective abstraction in APOS theory. So, that these students were at the level of relational understanding. Meanwhile, male students only did several stages in the reflective abstraction stage on the APOS theory so that these students were included in the level of instrumental understanding.

Biodiversity clock and conservation triangle: Integrative platform for biodiversity monitoring, evaluation, and preemptive conservation intervention

Business-as-usual is no more an option on the table for biodiversity conservation. Disruptive transformation at both policy and polity levels are pressing needs. The possibilities presented by the current wave of information and communication technology can act as travelators to meet the conservation targets. Here, we introduce twin concepts of biodiversity clock and conservation triangle that posit as convergence plane to seamlessly consolidate ongoing discrete efforts and convey real-time biodiversity information in a lucid schematic form. In its present form, the biodiversity clock depicts 12 ecological and 6 biophysical components. The universal consistency in clock-reading facilitates the biodiversity clock to be read and interpreted identically across the world. A ternary plot of the International Union of Conservation of Nature (IUCN) species conservation status is presented as the conservation triangle. Together, the biodiversity clock and the conservation triangle are invaluable in strategizing biodiversity conservation, post-2020. Leveraged smartly, they make possible pre-emptive intervention for biodiversity conservation.

Leverage Factors at Red Brick Production Centers in Sinar Tanjung Village, Banjar City, West Java Province

The existence of a certain traditional red clay brick production area has helped to boost the community’s economy. Although the sporadic existence of production units, in which many were not established based on a research stage with the concept of sustainable development, has consequently generated environmental damage. Land as a non-renewable natural resource has limited carrying capacity and its utilization needs to be regarded carefully for the present and future generations. This study aims to identify leverage factors that can act as an intervention for better environmental management at the red brick production centers in Sinartanjung Village, Pataruman District, Banjar City, West Java Province. The present research is based on the concept of sustainable development triangle (economic, ecological, and social dimensions) incorporated with analysis of Rapid Appraisal for Fisheries (Rapfish)-Multi Dimensional Scaling (MDS) from the results of the assessments of 25 red brick production units. It starts with the identification of sustainability issues to be discussed, determination of the analysis unit and attributes, data entry, and Rapfish analysis to determine the area’s sustainability status and leverage factors. The results showed that red brick production centers were not yet sustainable obtaining a value(64.47). Moreover, the leverage factors identified were: profit transfer (economic dimension), level of air pollution (ecological dimension), the trend of changes in the livelihoods of the local communities (social dimension).

Islamic triangle concept of marital age: Indonesian experience

Marriage is a sacred act that no one will doubt. The sacredness of marriage does not mean that every person could be married. There are legal competencies in Islam that every person should be aware of before doing any legal acts. Islamic law sets two indicators of legal age; both are bālig and rusydan. Indonesia has determined the age of 19 to be a formal legal age of Indonesian people for their marriage. Finding the connection between the two indicators and concluded age is worth studying. The article aims to correlate Islamic legal competence with the marriage readiness and triangle analysis of legal age marriage based on Indonesia's factual issues. The article was described and analyzed qualitatively and based on the normative legal review. The review found out that ahliyyatul adā` al-kāmilah is the appropriate phase-in doing all legal activities, including marriage. The concluded age of 19 by the Indonesian government is well-measured when it was analyzed through the three parallel concepts: maslahah, ra’iyyatul imam manūtun bil maslahah, and sadd al-zarī’ah, all of which allow valuable considerations based on actual problematic issues of underage marriage.

Golden Ratio, Silver Ratio and other Metallic Means ; Geometric Substantiation of all Metallic Ratios

This paper introduces the concept of special right angled triangles those epitomize the different Metallic Ratios. These right triangles not only have the precise Metallic Means embedded in all their geometric features, but they also provide the most accurate geometric substantiation of all Metallic Means. These special right triangles manifest the corresponding Metallic Ratios more holistically than the regular pentagon, octagon or tridecagon, etc

The effect of dynamic mathematics software on mathematical problem solving ability

Mathematics is one of the fields of science that is very important for humans because all science is related to mathematics. One of the skills that should be learned and developed in mathematics is mathematical problem-solving ability. Problem-solving ability is highly needed because humans are always used in everyday life, both in education and daily life. In fact, students’ problem-solving abilities are lacking. This is because mathematical problems created by teachers are not based on indicators of problem-solving ability. Triangle is the important material of two-dimensional figures in elementary school. Teachers need to explain the basic concept of a triangle so that students can master a more difficult concept of a triangle. Dynamic mathematics software can help students grasp the concept of triangles. This study used a quantitative method. This study is a comparison between classes using Hawgent and using conventional methods. The subjects in this study were 72 seventh-grade students in Cianjur, Indonesia. Data were collected based on the results of the pre-test and post-test problem-solving ability. Based on the study results, the class using Hawgent is more good than the class that using the traditional method. Hawgent has been proven to help students understand triangle material.

Complementary measures of conceptual understanding: a case about triangle concepts

Mathematics curricula from many countries have emphasized conceptual understanding as more important than the mastery of isolated skills. However, researchers and educators have used different measures to access students’ conceptual understanding of mathematics. Thus, it seems necessary to further explore whether and to what extent different measurement techniques could lead to coherent findings. Therefore, this study compares the techniques that are commonly used in school settings with those proposed by researchers as effective in addressing conceptual understanding. Specifically, this study compares three techniques used to assess the quality of the conceptual understanding of triangles, conducted among a class of grade 8 students in China. The three techniques were a definition-example-nonexample test, a concept-mapping task, and a traditional paper-and-pencil test on the operations of the concepts and their relationships. The results show that these techniques provide complementary, rather than convergent, insights into students’ conceptual understanding. Their strengths and limitations in addressing students’ conceptual understanding were identified. The findings not only provide information for researchers, educators, and classroom teachers in identifying alternative techniques in assessing conceptual understanding but also a more holistic view of students’ conceptual understanding when different perspectives of this understanding are made explicit.

Psychological factors: self- and circumstances-caused fraud triggers

PurposeThis paper aims to provide new understanding of fraudulent behaviour by offering different theoretical discussion on the fraud causation.Design/methodology/approachThe authors interviewed 15 executive managers in one of Indonesia local governments, by using semi-structured questions.FindingsThe authors explored the dynamics of both self- and other-directed factors in the spread of fraudulent behaviours, by focusing on the public-sector fraud landscape in local government. As a basis of analysis, the authors applied the theory of planned behaviours. In this study, “a concept of fraud triangle” substantially provides little help in elucidating the causation of fraudulent behaviours in local government. The theoretical and managerial implications are discussed.Originality/valueThis study offers new direction on broadening and deepening fraud literature and theories about the root causes of fraudulent behaviours.

Local Delaunay-based high fidelity surface reconstruction from 3D point sets

In this paper, we introduce a feature preserving surface reconstruction algorithm to produce a high fidelity triangulated mesh from an input point set. The concept of local Delaunay triangulation is applied to speed up the reconstruction procedure and to preserve features. The proposed algorithm has running time complexity of O(nlogn), where n is the number of points. Additionally, the local Delaunay triangulation improves the memory efficiency of the proposed method compared to global Delaunay-based methods. We introduced the concept of minimum circum-radius triangle to select the prime-triangle in the local Delaunay mesh. Based on the local projection and minimum circum-radius, our triangle selection criteria ensures the output mesh will be free from non-manifold edges and fold-over triangles. On top of that, we have provided the theoretical correctness of the proposed algorithm with the assumption of ϵ-sampling model. The experimental results show that the proposed method is capable of producing high fidelity meshes from large real-world non-uniform data. We also show the effectiveness of the proposed method compared to the state-of-the-art methods in terms of visual and quantitative analysis.

New perspectives on the role of cleaning symbiosis in the possible transmission of fish diseases

For the last seven decades, cleaning symbiosis in the marine environment has been a research field of intrigue. There is substantial evidence that, by removing undesired items from their client fishes, cleaner organisms have positive ecosystem effects. These include increased fish recruitment, abundance and enhanced fish growth. However, the intimate association and high frequency of interactions between cleaners and clients potentially facilitates pathogen transmission and disease spread. In this review, we identify knowledge gaps and develop novel hypotheses on the interrelationship between parasites, hosts and the environment (disease triangle concept), with a particular emphasis on the potential role of cleaner organisms as hosts and/or transmitters of parasites. Despite evidence supporting the positive effects of cleaner organisms, we propose the cleaners as transmitters hypothesis; that some parasites may benefit from facilitated transmission to cleaners during cleaning interactions, or may use cleaner organisms as transmitters to infect a wider diversity and number of hosts. This cost of cleaning interactions has not been previously accounted for in cleaning theory. We also propose the parasite hotspot hypothesis; that parasite infection pressure may be higher around cleaning stations, thus presenting a conundrum for the infected client with respect to cleaning frequency and duration. The impact of a changing environment, particularly climate stressors on cleaners’ performance and clients’ cleaning demand are only beginning to be explored. It can be expected that cleaners, hosts/clients, and parasites will be impacted in different ways by anthropogenic changes which may disrupt the long-term stability of cleaning symbiosis.

The geometric literacy skills of prospective teachers in the 4.0 era

The geometric literacy skills of junior high school students in Central Java still need serious attention. Facing the 4.0 era, prospective teachers’ mathematical literacy skills in the field of geometry need to be well prepared. The purpose of this study was to reveal the geometric literacy skills of prospective mathematics teachers in developing teaching materials through authentic assessment. This is a qualitative research with a case study method. The research subjects were prospective mathematics teacher students at the Muhammadiyah University of Purwokerto, Central Java, Indonesia, who contracted the 2019/2020 teaching material development course. The research subjects were selected purposively from the best 4 groups (G1-G4) from 9 working groups. Data were collected through open questionnaires, portfolios, observations and analyzed using inductive, interactive methods, simultaneously then described and explored. The results show that G1 and G2 explore the concept of reflection and right triangles contextually and scientifically through discovery, G3 explores cube nets contextually and scientifically through inquiry, while G4 explores the position of points on the Cartesian digram contextually and scientific problem through bassed learning.