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Fraud detection is used in various industries, including banking institutes, finance, insurance, government agencies, etc. Recent increases in the number of fraud attempts make fraud detection crucial for safeguarding financial information that is confidential or personal. Many types of fraud problems exist, including card-not-present fraud, fake Marchant, counterfeit checks, stolen credit cards, and others. An ensemble feature selection technique based on Recursive feature elimination (RFE), Information gain (IG), and Chi-Squared (X2) in concurrence with the Random Forest algorithm, was proposed to give research findings and results on fraud detection and prevention. The objective was to choose the essential features for training the model. The Receiver Operating Characteristic (ROC) Score, Accuracy, F1 Score, and Precision are used to evaluate the model's performance. The findings show that the model can differentiate between fraudulent transactions and those that are not, with an ROC Score of 95.83% and an Accuracy of 99.6%. The F1 Score of 99.6%% and precision of 100% further sustain the model's ability to detect fraudulent transactions with the least false positives correctly. The ensemble feature selection technique reduced training time and did not compromise the model's performance, making it a valuable tool for businesses in preventing fraudulent transactions.

Studying biology serves as a means to enhance understanding, abilities, perspectives, principles, and ecological accountability. Biology is the scientific discipline that seeks to understand the natural world. Learning biology entails more than simply acquiring factual knowledge, concepts, or principles; it is also an exploratory endeavor. This research aims to discuss problem-based learning (PBL), which can improve the learning outcomes of class XI biology students on plant tissue material and can be used as an alternative learning model. This research uses classroom action research (PTK), which includes four stages: planning, implementing actions, observation,  and reflection, which aim to improve the learning process. PTK is an activity that involves testing an idea in practice, which can improve and increase the quality of the teaching and learning process. The application of the PBL model was able to improve student learning outcomes, especially in biology subjects with plant tissue material for class XI students at SMA N 2 Langowan. During the pre-cycle, the average value was 5.7. In cycle I, it climbed to an average value of 7.3. In cycle II, it further increased to an average value of 8.4. Meanwhile, the completeness of student learning outcomes in the pre-cycle was 20%, while in the first cycle, it was 67%, then grew again in the second cycle, specifically 87%. Based on the aforementioned research findings, it can be inferred that the implementation of the Problem-Based Learning (PBL) model has led to an improvement in the academic performance of Biology students at SMAN 2 Langowan.  

One of the learning models included in the 2013 curriculum is the problem-based learning model. The PBL learning model is expected to improve the problem solving abilities of as many students as their problem solving abilities are considered to be still low. The aim of the research carried out by researchers was to determine and verify the impact of implementing the problem-based learning (PBL) model on students' abilities in solving problems, especially mathematics. This research uses a qualitative method by interviewing 4 informants from Pelangi Elementary School. The results of this research are that the problem-based learning (PBL) model has a positive impact on students' problem-solving abilities.

Understanding and determining fold symmetry is a competency that is difficult for students to achieve, either because the learning does not attract student enthusiasm or the students themselves do not have the motivation to learn about fold symmetry. In connection with this, this research was conducted with the aim of knowing student learning outcomes on folded symmetry material using the Problem Based Learning (PBL) model. This research is a type of research that uses quantitative descriptive methods with an approach in the form of a classroom action approach. The source of this research comes from SD Negri 079 Pajagalan and the subjects in this research are class III students at SD Negri 079 Pajagalan. The technique for collecting data on student learning outcomes is carried out through tests in the form of test questions from evaluations and student worksheets. Then the data obtained was analyzed descriptively. Research that has been conducted shows that the difficulties experienced by students actually come from the questions given not being in accordance with the students' cognitive abilities.

This study aims to find out the effect of problem-based learning (PBL) models on students' learning soup chapter outcomes in Class XI of Culinary at SMKN 1 Lamongan. The type of research used is a quasi-experimental with a non-equivalent control group research design. The sample was two classes, including an experimental class and a control class with 53 students in  Class XI of Culinary at SMKN 1 Lamongan. Data instruments were obtained by pre-test and post-test. The data analysis technique uses an independent sample t-test test with SPSS 25. The t-test independent test results for post-test showed that the value of Sig. For 0.020, which means the significance is <0.05. It can be said that there is a significant difference in the mean. Thus, it can be concluded that there is an effect of problem-based learning model on the learning results in Class XI of Culinary at SMKN 1 Lamongan.

This research was conducted due to the lack of optimal use of interesting media, as well as the lack of teacher skills in using digital-based media in the learning process. Because of this, students often become bored and lose interest in learning lessons. As a result, learning materials tailored to students' interests and preferences are needed.One way to achieve this is by creating the development of Problem Based Learning Media using Canva for class X TKJ in basic computer network and telecommunications orientation subjects at SMK N 3 Padang. The aim of implementing Canva as a learning medium can be a creative solution to increase student focus by visualizing material in an interesting and interactive way. This type of research uses Research and Development (R&D), and the development model used is 4D model design. This 4D development model consists of four stages, namely Define, Design,Develop (Development) and Disseminate (Dissemination). Research carried out at SMK N 3 Padang, research findings produced learning materials with material validity of 89.07% and media design validity of 93.7% and teacher response questionnaire answers of 96.6% and the student questionnaire response was 88.12 which can be categorized as very valid and practical.

This research aims to increase students' reading literacy through the application of the problem based learning model in class V of SD Negeri 010 Talontam for the 2022/2023 academic year. This research is classroom action research which was carried out in 2 cycles. Each cycle consists of planning, action, observation, and reflection. The research subjects were 23 fifth grade students at SD Negeri 010 Talontam for the 2022/2023 academic year. Research data was obtained through tests. The increase in Reading Literacy is shown by the increase in the average percentage of students' reading literacy which increased from 46.52% in the pre-cycle to 56.52% in the first cycle, and then to 76.52% in the second cycle. This shows an increase in reading literacy. Based on these findings, it can be concluded that the problem based learning method used in class V of SD Negeri 010 Talontam for the 2022/2023 academic year has improved students' reading literacy skills.

The aim of this study is to provide specifics regarding the application of the Problem-Based Learning (PBL) model in upper-level Social Sciences courses, particularly when it comes to content related to diversity in Indonesia. A qualitative research method through literature review is the research strategy that is being applied. This study focuses only on giving a broad picture of how the Problem Based Learning paradigm is being used in Indonesian elementary schools to teach students about diversity. The results of this study show that a large body of prior research has demonstrated the efficacy of the Problem Based Learning paradigm in the context of social studies instruction at the elementary school level, particularly when it comes to teaching materials on diversity in Indonesia.

Problem solving is a planned process that needs to be carried out in order to obtain a solution to a particular problem that requires systematic resolution steps. Systematic methods are used in the learning process to solve problems or face challenges needed in everyday life. The research method used is the Literature Review System with writing stages, namely data planning, screening, extraction, analysis. Search literature studies using google scholar data base using the Publish or Perish application. The use of the Math City Map approach can affect the problem-solving ability of students in mathematics learning. The use of the Math City Map approach helps learners understand and solve math problems better and effectively develop problem-solving skills. Learning outside the classroom using MCM applications provides a more immersive and challenging experience for students, helps them apply knowledge, and improves social and personal skills.

Achievement ability is a pinnacle of the learning process, at this stage students prove the success of learning at school SD Negeri 17 Gunung Megang. However, as the learning process progresses, several things occur that can affect this success. One of them is the problem of declining achievement scores, both academic and non-academic scores. The value of achievement that decreases or increases can be influenced by various factors. All problems need to be resolved so that the school can find a solution to increase or maintain the value of student achievement for the next period. Based on these problems, a Decision Support System is needed that can help the school in seeing the effect of student achievement. The method used in making decisions on the effect of student achievement is the Analytical Hierarchy Process (AHP) method. AHP can be compiled based on a hierarchical model that is made together with decision makers in order to provide solutions through the highest weight value in each criterion and alternative that is served. The decision support system with the AHP method can determine the priority weight of the criteria.

The objective of this study is to assess the efficacy of employing the Problem-Based Learning approach in the acquisition of Trigonometry concepts. This study examines four metrics of learning efficacy: student learning outcomes, student engagement during the learning process, student feedback on learning, and the teacher's aptitude in facilitating learning. This research falls under the category of quantitative descriptive research. The research was conducted at SMA Negeri 8 Manado during the odd semester of the 2023/2024 academic year. The study included a sample of 38 students from class X-I. The employed data collection approaches include testing, observation, and administering questionnaires. The study determined that the utilization of the Problem-Based Learning (PBL) approach in teaching Trigonometry content yielded positive results. This is exemplified by the attainment of the four metrics that measure the efficacy of utilizing the learning model: (1) Student learning results in the subject matter are classified as thoroughly comprehensive. (2) Student activities during the learning process are classified as satisfactory. (3) Students exhibit a favorable attitude towards the learning process. (4) The teacher's aptitude for overseeing the learning process is exceptional.

The aim of this research is to determine research trends and describe relevant research results regarding cooperative learning models on the mathematical representation abilities of students at the junior high school/MTs level. The method used in this research is literature study or generally known as Systematic Literature Review (SLR) to answer the problem formulation in the research. This research consists of five stages, namely formulation of research questions (Research Question), literature search (Search Process), determination of inclusion criteria (Inclusion Criteria), assessment of literature sources (Quality Assessment), and data analysis (Data Analysis). The study literature search process was carried out by accessing Google Scholar, Publish or Perish, and Garuda. Data was obtained related to keywords and based on the inclusion criteria, namely 22 articles that met the criteria. The research results from reviewing the 22 articles show that the cooperative learning models most widely used to improve representation abilities are cooperative learning models with the STAD and TPS types. The most published articles regarding cooperative learning models on representational abilities were in 2019. The description of research results related to cooperative learning models on representational abilities is that they are able to improve the mathematical representational abilities of students at the SMP/MTs level and equivalent. The cooperative learning model can be combined with appropriate media, strategies and approaches so that it can improve students' mathematical representation abilities.

The curriculum is an important part of the education system because it is one of the determining factors in achiefing goals. Likewise, the Islamic religious education (PAI) curriculum also plays a central role in various curricula to achieve the direction and goals of Islamic education itself. Islamic education aims to develop all human potential based on Islamic law. However, in reality, the PAI curriculum still has problems in real life. For example, the education model is still docmatic, old-fashioned, redundant, and the religius concept taught are no longer relevant to modern life. Teachers and all scool staff mus be able to trully understand and design the curriculum. In developing an Islamic religious education (IRE) curriculum, a special approach is anneded that ensures that the designed curriculum can bring students to the desiret changes. Teachers can choose several approaches that suit their teatching model, taking into account the specifics of Islamic education itself. Four approaches can be used in curriculum development: academic, humanistic, technological and social reconstruction approaches. The developed curriculum can then be used by various PAI teachers in the teaching and learning process at school.

Teachers are required to have the ability to use various methods or combine several relevant methods so that they are able to integrate the development of students' multi-intelligences in the learning process. Based on the results of observations, information was obtained from the school that they experienced several problems in the teaching and learning process, namely that teachers in the classroom learning process were still classical, teachers had never received training in multiple intelligences learning models, while on the other hand students were required to be creative in developing knowledge in the learning process. This assistance is intended to improve teachers' abilities in implementing effective learning models by implementing multiple intelligence learning models which can be used as fun learning models in the classroom. This assistance aims to provide understanding to high school teachers about effective learning by implementing the multiple intelligence learning model, increasing the ability of high school teachers in planning, implementing and evaluating using the multiple intelligence learning model, implementing this learning model in high school according to the conditions and potential of students. The methods used include lecture, question and answer, discussion, practice and assignment methods.

In taking pictures using a camera, for example, it often results in poor image quality. The resulting image quality can be in the form of black and white images. This can interfere with further processing of the image. Specifically, this can happen in the agricultural sector, such as the results of a bad potato leaf image (black and white). In fact, the images of leaves from agricultural land will be used for image processing which can help with the planting process, for example. This is of course very disturbing, so a way is needed to translate a gray scale image into an image that has a color resembling the shape of an actual leaf. In fact, the development of Deep Learning with various models has grown rapidly, one of which is the Conditional GAN which can process image to image translation. Seeing the purpose of the Conditional GAN, this paper implements the Pix2Pix model based on the Conditional GAN which aims to translate black and white images into images that have color. This experiment produces images with colors that match the original image with good quality. So that with the results of this experiment, it is hoped that problems with taking images that are sometimes not good enough can be solved by image translation using deep learning.  

This research aims to determine the effect of the Problem Based Learning (PBL) learning model on social studies learning outcomes for Class V Elementary School in Gugus Sumberarum, Kapanewon Moyudan, Sleman Regency. This research is pre-experimental research, with a quasi experimental research design. The population in this study consisted of VA and VB classes with 52 students. Sampling used the Simple Random Sampling technique to select the VA class with 20 students as the experimental class and the VB class with 20 students as the control class. The test instrument used is a learning outcomes test. Data is described and analyzed using descriptive statistics and inferential statistics. The results of the research show that the value of learning outcomes before implementing the Problem Based Learning (PBL) learning model based on Tri Nga teachings obtained an average value of 67.6. After implementing the Problem Based Learning (PBL) learning model based on Tri Nga teachings, the average score rose to 85.35. The results of the significance test obtained a Sig value. (2-tailed), namely 0.00 < 0.05, it can be said that there is a significant difference between the control class and the experimental class, so it can be said that H0 is rejected and H1 is accepted. Based on these results, it can be said that there is a positive influence of the application of the Problem Based Learning (PBL) learning model based on Tri Nga teachings on social studies learning outcomes in class V elementary school in Gugus Sumberarum

The research purposed to increase students motivation and used variation of teaching methods teachers in the delivery materials of students. It causes problems faced today, teachers spend too much time in front of classroom without give a chance students to explore new things besides in the class. Another programs is the low critical thinking ability of students which can be seen from the questions and students answer during the learning process. This is accordance with the results shown by Program for International Study Assesment (PISA) in 2015, Indonesia position as one the lowest ranked in quality, Education is ranked 62nd out of 70. Inquiry learning model is one of the way solves this problem. From the facts obtained, the writters tried to provide solutions of these problem is the right to do the development of teaching inquiry learning model. The design of this study using basic research. By using the inquiry learning model, the things obtained is inquiry training requires insvetigative activities, either observation or experiment, which or part of scientific performance. Inquiry involves process skill based on a scientific atittude so that activity can help students to gain a deeper understanding of the environment.

In this research, there were obstacles or problems with students' activities and learning outcomes in less than optimal science content. The reason is due to a lack of skills in gathering information, still using conventional approaches, and one-way learning. The proposed solution is to apply a combination model of PBL, TGT, and Picture and Picture. The purpose of this research was to determine the activities and learning outcomes of grade 5 students at SDN Teluk Tiram 2 Banjarmasin, of which there were 20 students, including 7 boys and 13 girls. This research applies the PTK method and also uses qualitative and quantitative approaches. Qualitative data was obtained from teacher and student observations, while quantitative data came from personal written tests to evaluate student learning outcomes. The research results showed that teacher activity at meeting 4 reached 94% with the criteria "very good". Meanwhile, student activity reached 90% and student learning outcomes had reached the success indicator, namely a score of ≥81. Thus, this combination of models can effectively overcome this problem.

The problem in this study is the low activity and learning outcomes of students in IPS (Social Studies). This happens because the teaching method is only one-way, still using conventional methods, and students tend to be passive. The way to overcome this problem is through the use of Problem Based Learning (PBL), Group Investigation (GI), and Picture And Picture (PAP) models. The research aims to improve student activity and learning outcomes. This research focused on fifth grade students at SDN Teluk Tiram 2 Banjarmasin, which numbered 20 people, in the form of 12 boys and 8 girls. This research method applies a qualitative approach that uses the type of Classroom Action Research (CAR). Qualitative data were obtained from observations of educator and student activities, while quantitative data were obtained from individual written test results. The results of this study show that at the fourth meeting, the teacher's activity obtained a score of 26, rated as "Very Good". Student activity reached 100%, and learning outcomes met the success indicator (>81). In conclusion, PBL, GI, and PAP methods can make learning activities and results increase.

The background of this research is that the model used by the teacher is not appropriate with the learning needs of students at MTsS Yati Kamang Mudik, the level of critical thinking of students seems less active in expressing opinions, not giving many suggestions or questions, not being able to explain problems, with the influence of the social environment. This research is a quantitative study. The research design used is Quasi-Experimental. The sample for this study was class VII students at MTsS Yati Kamang Mudik with a sample size of 40 students. The research samples were class VII-1 experimental using the Contextual Teaching and Learning model and class VII-2 control using the conventional model. Data analysis techniques used the Normality Test with the Kolmogorov Smirnov formula, and homogeneity test with Fisher's test followed by hypothesis testing with Independent t-test. The results of the study show that based on the results of data processing it can be concluded that there is a significant influence on the use of the Contextual Teaching and Learning (CTL) model as these results prove that the value of the experimental class Sig. (2-tailed) = 0.001. While the research alpha = 5% or 0.05. That is, the value of Sig. (2-tailed) is greater than the alpha value (0.001 <0.05) so that there is an influence of the Contextual Teaching and Learning (CTL) learning model on students' critical thinking skills in the Akidah Akhlak lesson at MTsSYati kamang Mudik in class VII.