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Data security is a critical aspect in the digital era due to the increasing exchange of sensitive information through electronic media. One widely used approach to protect data confidentiality is cryptography, particularly asymmetric encryption algorithms. This study aims to analyze the implementation of the Rivest–Shamir–Adleman (RSA) algorithm as a data security mechanism through an encryption and decryption process. The research method used is an experimental approach by implementing the RSA algorithm in a text-based data security simulation. The stages include key generation, encryption, and decryption processes, followed by analysis of the correctness and effectiveness of the algorithm in maintaining data confidentiality. The results show that the RSA algorithm is capable of converting plaintext into unreadable ciphertext and successfully restoring it to its original form through the decryption process using the correct private key. This confirms that RSA provides a high level of security based on the difficulty of factoring large prime numbers. The implication of this study is that the RSA algorithm can be effectively applied to secure sensitive data transmission in information systems, especially in environments requiring strong authentication and confidentiality.

Despite its cultural potential, Wetabar Village has not been supported by effective digital promotional media. Information access remains limited, and the lack of interactive promotional platforms has contributed to the low interest of tourists. Current promotional efforts rely heavily on conventional methods, resulting in decreased visitor numbers. The implementation of digital technologies such as Augmented Reality (AR) and Web-based 360° Virtual Reality Tours is considered an effective approach to increasing tourist engagement by offering immersive exploration experiences and interactive cultural content. This research aims to design and implement a web-based tourism promotion media that integrates local cultural content with AR and 360° virtual tour technologies. The development process follows the MDLC research method, utilizing the Lumi H5P platform and PHP for system implementation. The resulting system enables users to digitally explore Wetabar Village through panoramic views and interactive multimedia features. The findings show that the developed application runs smoothly on both Android devices and laptops and is capable of providing hotspot access to operate the virtual reality features. This innovation is expected to enhance tourist interest while supporting cultural preservation and promoting digital transformation within the tourism sector of West Sumba.

This study aims to determine the effect of using number puzzle media on the ability to recognize number symbols in early childhood at Kihajar Dewantoro VI Kindergarten. The background of this study is based on the importance of concrete and interesting media in supporting early mathematics learning, especially the introduction of number symbols in children aged 4–5 years. The study used a quantitative method with a quasi-experimental design through a comparison between conventional learning and learning using number puzzle media. Data were collected through observations of aspects of the ability to recognize number symbols and match numbers. The results showed that the average ability of children in conventional learning only reached a score of 6, while learning using number puzzle media increased significantly to a score of 13.1. These findings indicate that number puzzles can make children more focused, enthusiastic, and easier to understand number symbols in a concrete and meaningful way. Thus, number puzzle media is proven to be effective in improving the ability to recognize number symbols in early childhood and can be used as an alternative mathematics learning media in PAUD.

The problem in this study is to determine what is the effect of the number tube game on the symbolic thinking ability of 4-5 year olds. The aim is to reveal whether there is a number tube game on the symbolic thinking ability of 4-5 year old children at Menara Laut State Kindergarten, Leato Utara Village, Dumbo Raya District, Gorontalo City. The type of research used is a quantitative experiment. The subject of this study is how to determine the effect of the number tube game. The method used in this study is the observation and documentation method. Based on the results of the observation, it was found that the symbolic thinking ability in recognizing numbers in children has not developed optimally. Although teachers have tried to introduce numbers, most children still have difficulty in naming, ordering, and writing numbers. Children also need teacher assistance to understand numbers 1-10 and distinguish between certain numbers such as 6 and 9. Therefore, a more effective and fun learning strategy is needed to help children understand the concept of numbers symbolically. In this case, it can be concluded that improvements through the application of the number tube game. This game was chosen because it is simple, easy to use, and in accordance with the characteristics of early childhood. Through a play-while-learning approach, children are expected to be able to recognize numbers more easily.

This research is entitled “Implementation of Lumi H5P in Mathematics Learning Media at SDK PERO Using the MDLC Method.” The aim of this research is to create a digital-based interactive learning medium designed to enhance students’ understanding of the subject matter. media that can help students understand mathematics lessons, particularly on the topics of whole numbers and multiples, in an engaging and easy-to-understand way. The approach applied in this research is the MDLC method.. Each stage was carried out systematically to produce an interactive and high-quality learning media. The learning media application was developed using LUMI H5P, which provides various interactive features such as text, images, videos, and interactive exercises in the form of single choice sets and drag-and-drop activities. The results of the study show that the implementation of Lumi H5P-based learning media can increase students’ learning interest and facilitate their understanding of the material. Moreover, the simple interface design and user-friendly features make this application effective for both classroom learning and independent study. Therefore, the implementation of Lumi H5P in mathematics learning The media can act as an innovative solution to promote a learning process that is more engaging and effective.

Dairy cattle farming is a cattle breeding business specifically developed to produce large quantities of milk. Dairy cattle generally belong to the Bos taurus species, and one of the most common and productive dairy cattle breeds in Indonesia is the Holstein Friesian (FH). This study aims to evaluate how artificial insemination (AI) impacts the quantity and quality of milk produced by dairy cattle in the region, thereby contributing to improved agricultural practices and economic outcomes for dairy farmers in Indonesia. This study used a quantitative approach with a descriptive and experimental design to evaluate the effectiveness of artificial insemination (AI) on milk production in dairy cattle in Indonesia, focusing on factors influencing AI success. The results of this study indicate that artificial insemination (AI) has been proven effective in improving genetic quality and milk production in dairy cattle in Indonesia. Timely implementation of AI, especially at the peak of the estrus cycle, can increase conception rates by between 30% and 70%, with an ideal target of 65-75%. An AI program supported by inseminator training, maintained frozen semen quality, and good feed and livestock health management has a positive impact on the ideal calving interval of approximately 12 months, thereby increasing calf numbers and milk production. Artificial insemination is an effective reproductive method for increasing dairy cattle productivity through genetic improvement and controlled reproductive management. The success of an AI program depends heavily on semen quality, proper insemination techniques, livestock health management, and farmer involvement.

This study aims to analyze the influence of parenting styles on the cognitive development of early childhood children at KB AN-Nisa, South City District, Gorontalo City. The background of the study highlights that some children face difficulties in recognizing shapes, colors, and numbers, which are critical components of early cognitive development. A quantitative research approach was employed, utilizing observation and documentation techniques, involving a sample of 5 children out of a total of 35 students. The study explores how different parenting styles, including authoritarian, permissive, and democratic, impact the cognitive development of young children. The results demonstrate significant variations in cognitive abilities among children, influenced by the type of parenting they receive. Specifically, children raised in a responsive and supportive environment tend to show better cognitive development, particularly in areas such as shape and color recognition. These findings emphasize the crucial role of parenting style in providing cognitive stimulation for early childhood. They also highlight the importance of collaboration between parents and schools to optimize the cognitive development of young children, suggesting that a balanced, supportive approach to parenting can positively influence children’s learning outcomes. Therefore, this research contributes to understanding the connection between parenting and cognitive development in early childhood.

This study aims to analyze production performance and the factors influencing the productivity of mining operations at PT. XYZ during August 2025. The evaluation covers production achievement against the corporate work plan (RKAP) and the owner’s operational plan, equipment availability (Physical Availability), the productivity of loading and hauling units, and various types of loss time that reduce effective working hours. The results indicate that production realization reached only 65% of the RKAP target, while achieving 102% of the owner’s plan for total material. Low equipment availability, high loss time such as no hauler, wait operator, and front preparation, as well as the underperformance of 80-ton and 100-ton units, were identified as the main contributors to production deviation. Additional influencing factors include unit reassignment, suboptimal haul road conditions, and insufficient operational fleet numbers. The study recommends optimizing fleet management, enhancing preventive and predictive maintenance programs, reorganizing hauling workflows, and controlling dominant loss time sources to improve operational efficiency and production target achievement in future periods.

Real Analysis is a fundamental course in mathematics education characterized by its deductive and axiomatic structure, which requires logical, systematic, and conceptual understanding. However, many studies have shown that students often face difficulties in grasping abstract concepts and constructing mathematical proofs deductively. Lestari (2015) found that most students were only able to conduct proofs inductively, while their deductive proof skills remained low due to weak prerequisite knowledge and lack of formal reasoning practice. Meanwhile, Darmadi, Sanusi, and Rifai (2024) explained that students’ difficulties in understanding formal definitions and the structure of real numbers indicate the need for a learning approach that emphasizes conceptual comprehension. This article employs a literature review approach to analyze the application of conceptual approaches in helping beginners understand Real Analysis. The results show that a conceptual approach enhances students’ understanding of the meaning behind mathematical symbols and procedures, helps them build connections among concepts such as limits, continuity, and the real number system, and gradually develops their deductive reasoning skills. Therefore, applying a conceptual approach in Real Analysis learning is an essential strategy to help students achieve deep, logical, and meaningful understanding.

Real analysis is one of the main branches of mathematics that serves as a fundamental foundation for the development of science and technology. This study emphasizes the understanding of basic concepts such as real numbers, limits, continuity, the principle of mathematical induction, as well as deductive and axiomatic approaches as a strong framework for mathematical proofs. This research employs the Systematic Literature Review (SLR) method by examining articles and journals related to both the theoretical aspects and the implementation of real analysis in solving mathematical problems. The findings indicate that the application of Polya’s method, visualization through demonstration, and the use of modern technology such as augmented reality (AR) can enhance the effectiveness of real analysis learning. These approaches help students connect abstract concepts with real applications, thereby strengthening logical, systematic, critical, and rigorous thinking skills. However, several learning difficulties are also identified, including the complexity of the material, weak learning habits, social influences, and inappropriate teaching strategies. Therefore, more applicative, interactive, and contextual learning strategies are needed to support the achievement of learning objectives. The conclusion of this review highlights that the integration of theoretical understanding, problem-solving methods, and innovative technology is a strategic step to improve students’ thinking quality in real analysis courses. Thus, real analysis is not only positioned as a theoretical subject but also as a medium for developing problem-solving abilities and higher-order thinking skills that are relevant to both academic needs and real-world applications.

Remember sleep quality has a big impact on an athlete's best performance, this study aims to find out the relationship between sleep quality and peak performance, and how much sleep quality contributes to peak performance. To achieve peak performance, an athlete must be in optimum condition during training and matches. This research uses a quantitative descriptive research type with a correlational approach. Quantitative research collects and analyzes data using numbers and measurements. The researcher used purposive sampling, where the sample consists of 30 athletes from Ronggolawe Athletics Club in Tuban. The tools used in this study are the sleep quality scale and the peak performance scale, both administered through questionnaires. The data analysis method used is the product moment correlation test. The results of the data analysis showed a correlation coefficient of -0.423 (r = -0.423). Based on the analysis of the coefficient of determination, it was found that the sleep quality variable contributes effectively to the peak performance variable by 17.9%, while the remaining 82.1% comes from other factors not studied in this research.

Traditional markets play a central role in the local economic system and the social life of communities, particularly in Medan City. However, the dynamics of urbanization, competition from modern retail, and changes in consumer behavior have posed significant challenges to their sustainability. This study aims to analyze the relationship between the strategic location of traditional markets and their economic performance using a mixed-methods approach and spatial analysis. The research focuses on six traditional markets in Medan City: Petisah Market, Sukaramai Market, Beruang Market, Ikan Lama Market, Sei Sikambing Market, and Pringgan Market. Quantitative data were collected through questionnaires using a Likert scale and analyzed descriptively and correlationally, while qualitative data were gathered through field observations and in-depth interviews to interpret the socio-spatial context of each market. The key variables include accessibility, commodity diversity, and environmental comfort, which are linked to economic performance indicators such as visitor numbers, buyer loyalty, and sales stability. The results show that Petisah, Pringgan, and Ikan Lama Markets scored highest in these variables and demonstrated better economic performance. Correlation analysis identified commodity diversity as the most influential factor on economic performance, followed by environmental quality and accessibility. To strengthen the analysis, a SWOT model was also applied to identify the strengths, weaknesses, opportunities, and threats faced by traditional markets. This analysis reveals that the primary strengths of the markets lie in their location and social interaction, while the main challenges stem from a lack of modern management and pressure from digital markets. This study recommends development strategies based on local advantages, infrastructure modernization, market information digitalization, and cultural promotion as steps to sustainably enhance the competitiveness of traditional markets amid urban spatial changes.

This study aims to analyze the influence of Multidimensional Service Quality, Perceived Value, and Customer Relationship Management (CRM) on Customer Satisfaction, with Customer Engagement as a mediating variable at Awal Care Veterinary Clinic in East Jakarta. The research background is driven by a significant decline in patient numbers in 2023 and intense competition in the veterinary healthcare sector. This study employs a quantitative correlational approach using purposive sampling, involving 310 respondents who are clients of the clinic. Data were collected through a questionnaire with a 6-point Likert scale, and analyzed using the Structural Equation Modeling Partial Least Squares (SEM-PLS) method. The results indicate that all independent variables service quality, perceived value, and CRM—have a positive and significant influence on both customer engagement and customer satisfaction. Customer engagement is also found to have a significant impact on customer satisfaction. Furthermore, all indirect relationships through the mediation of customer engagement are significant, indicating that customer engagement serves as an important partial mediator. The R² value of 0.646 demonstrates that the model has strong predictive power for customer satisfaction. These findings highlight the importance of strengthening experience-based strategies and fostering emotional and cognitive connections with customers. This study contributes theoretically to the field of service marketing and provides practical implications for veterinary clinic management in enhancing customer satisfaction and loyalty.

Dengue Hemorrhagic Fever (DHF) is an infectious disease caused by the dengue virus and transmitted through the bite of the Aedes aegypti mosquito. The high risk of dengue transmission is greatly influenced by the density of mosquito larvae which correlates with environmental conditions and community behavior. This study aims to describe the density level of Aedes aegypti mosquito larvae in the working area of the Gandus Health Center in Palembang City in 2025 through the measurement of House Index (HI), Container Index (CI), Breteau Index (BI), Larvae-Free Numbers (ABJ), and Density Figure (DF). The method used was descriptive observational with a purposive proportional random sampling technique on 100 households in three RTs. Data was collected through direct observation using checklist sheets. The results showed that the HI was 66%, CI was 44%, BI was 107%, and ABJ was only 34%, which indicates that the larval density is very high and far below the WHO standard (≥ 95%). The DF value is in the range of 7–9, reinforcing the finding of high vector density. This condition shows that the area is at high risk of dengue transmission. Interventions are needed in the form of regular mosquito nest eradication (PSN), increasing public education, and strengthening the role of jumantic cadres in sustainable vector control.

This study aimed to evaluate the effect of post-larvae (PL) 12 density of whiteleg shrimp (Litopenaeus vannamei) on survival during transportation using a closed wet system. The study was conducted experimentally using four different density treatments: 500, 750, 1000, and 1250 shrimp per liter of water. The purpose of these density variations was to identify the optimal density level that still ensured a high survival rate during transportation. The results showed that shrimp seed density significantly influenced survival. A density of 500 shrimp/liter resulted in the highest survival rate of 99.6%, while a density of 1250 shrimp/liter showed the lowest survival rate of 99.30%. Although the differences in numbers appear small, the ANOVA statistical test showed that the differences between the treatments were significant. These results were reinforced by a further LSD (Least Significant Difference) test, which confirmed significant differences between treatment groups. In addition, water quality parameters such as dissolved oxygen, temperature, and pH were also observed during transportation. Measurement results showed that dissolved oxygen and temperature changed significantly with increasing seed density. However, pH did not show any significant differences between treatments. Overall, the results of this study indicate that shrimp seed density and water quality parameters are important factors to consider in the shrimp fry transportation system. Appropriate density management can minimize stress and mortality, and ensure seed survival during the distribution process.

This study aims to analyze the influence of learning interest, learning discipline, and critical thinking skills on student learning outcomes in the Simple Financial Processing subject for class XI MPLB at SMK PGRI 2 Sidoarjo. Learning outcomes are understood as skills or abilities acquired by students after participating in the learning process, the success of which is measured through scores in the form of numbers, symbols, or letters. Three factors selected in this study as independent variables are learning interest, learning discipline, and critical thinking skills. This type of research is quantitative research with an explanatory approach, which aims to explain the cause-and-effect relationship between these variables. The population in this study were all 102 class XI MPLB students. The sampling technique used non-probability sampling with a total sampling type, so that the entire population was sampled. Data collection was carried out by distributing questionnaires to students. The data obtained were then analyzed using SPSS version 27 software. Before conducting multiple linear regression analysis, validity and reliability tests were first conducted to ensure that the instruments used were appropriate and consistent in measuring the variables studied. The analysis results show that the three independent variables—learning interest, learning discipline, and critical thinking skills—have a significant influence on student learning outcomes. Therefore, it can be concluded that improvements in these three aspects will positively impact student learning outcomes in the subjects studied.

Relations in mathematics are a fundamental concept that describe the connection between two sets. This concept is crucial because it forms the foundation for understanding functions and various other mathematical topics. In everyday life, relations can be found in numerous real-world situations, such as the relationship between teachers and their students, sellers and buyers, or students and their exam scores. By understanding relations, students can see how elements from one set are linked to elements in another set based on specific rules. Unfortunately, many students still find it difficult to grasp the concept of relations because it is often taught in an abstract way, filled with mathematical symbols that are not connected to their real-life experiences. As a result, students may feel that the topic is irrelevant to their lives, leading to a lack of interest and poor comprehension. In fact, if taught contextually and practically, the concept of relations can serve as a key bridge to help students understand functions and their relevance in the real world. This article aims to explain the concept of relations through a more practical and relatable approach. For example, it can be illustrated by connecting students' names with their attendance numbers, or linking foods with their nutritional contents. Through these examples, students can see that relations are not just rigid parts of a math lesson but also reflect meaningful connections in everyday life. In this way, it is expected that students will gain a more comprehensive understanding of relations—not only mathematically but also in terms of practical application and functionality. A solid understanding of relations will make it easier for students to learn advanced concepts such as functions, mappings, and mathematical logic. Therefore, a learning approach that emphasizes contextual understanding is essential, so that students are not merely memorizing formulas but are also capable of applying the concept of relations in real-world situations.

When producing a perfect product, design process namely 2D modeling and 3D drawing, are closely related. The purpose of this study is to design a 3D model of a gun mastering machine product as a fan drive using CAD applications. The method of this study is decision data on API production (analytical product inspection). Measurement of sterling machine degradation using CPK (deviation) received results of -0.97, -0.22, 0.86, 0.11, 0.11 between zero and what indicates this specification. On average, the results of the stirling fluid fluorescent agent measurement are red numbers indicating that the survey dimensions are absent, especially from the basic dimensions of point 4, with samples 2, 3, and 5 exceeding the specified tolerance limits.

Communication is the most important activity in everyday life, language and writing are effective communication tools both verbally and visually, communication in a visual context will be conveyed through typography. As time and technology develop, typography plays an important role and presents many types and styles of letters almost every day which have their own characteristics and uniqueness, one of which is decorative typefaces which have minimalist and geometric shapes as benchmarks. The design of this decorative typeface typography aims to create letters, numbers and punctuation characters that have their own uniqueness and characteristics by exploring the potential forms in the Gorga Dalihan Na Tolu motif in the Toba Batak Traditional House

This study aims to improve students’ understanding of the concept of place value of whole numbers through the use of number board media in primary school mathematics learning. The background of this study stems from the fact that many students struggle to distinguish between digits and their place values due to the dominance of conventional, less contextual teaching approaches. This research used the Classroom Action Research (CAR) method conducted in two cycles involving second-grade elementary school students. The findings revealed a significant increase in conceptual understanding after the use of number board media. Students became more active, were able to correctly position digits, and comprehended the meaning of place value more concretely. The implication of this research shows that concrete media such as number boards are effective in strengthening students’ understanding of abstract mathematical concepts in a fun and meaningful way.