Abstract:Calculus of Multiple Variables is a core course in the Mathematics Education study program and plays a crucial role in developing students advanced mathematical thinking skills. Success in this course relies heavily on mastery…
astery of the prerequisite material, particularly the concepts of derivatives and integrals of functions of one variable. Therefore, understanding mathematical concepts is a fundamental aspect that determines students’ ability to understand the interrelationships between topics and solve problems systematically and logically. This study aims to describe students' conceptual understanding of multivariable calculus. The approach used is a descriptive approach with a purposive sampling technique, namely selecting research subjects based on certain criteria in the form of the highest and lowest levels of mathematical concept understanding. The results of the study indicate that students conceptual understanding varies across different materials. In the partial derivative material, students were not yet fully able to accurately represent the solution concept, especially in applying the rules for derivatives of exponential functions, so the results obtained did not conform to mathematical principles. These errors are conceptual in nature and indicate a weak grasp of certain basic concepts. However, in the material on derivatives of products of two functions and triple integrals, students demonstrated goog conceptual understanding. They were able to select, use, and apply solution procedures appropriately and systematically. This finding indicates that despite weaknesses in certain concepts, students still possess quite good procedural and conceptual abilities in the context of other problems in polynomial calculus.
Abstract:This study aims to determine the effect of price and advertising on the consumptive behavior of students at Bandung International Women’s University in the TikTok Shop marketplace. The growing trend of consumptive behavior…
vior among students is influenced by easy access to social media and digital marketing strategies such as interactive advertisements and discount offers. This research uses a quantitative approach with descriptive and verificative methods. The sample consists of 95 respondents, students of the Business Administration Study Program (2021–2024), selected through proportionate stratified random sampling. Data were collected using questionnaires and analyzed using multiple linear regression through SPSS. The results show that (1) price has a positive and significant effect on students’ consumptive behavior, (2) advertising also has a positive and significant effect, and (3) simultaneously, price and advertising significantly affect consumptive behavior among TikTok Shop users. Therefore, competitive pricing and creative advertising strategies on TikTok Shop have been proven to increase impulsive buying tendencies among students. This research is expected to serve as a reference for digital business practitioners in designing more ethical and educational marketing strategies for young consumers.
Abstract:Food waste in buffet services in the tourism sector is a strategic issue that has significant impacts on environmental, economic, and social aspects, especially in the context of efforts to achieve sustainable tourism. This…
his study aims to analyze in-depth strategies for preventing food waste in buffet services by highlighting operational practices, guest behavior, and managerial policies implemented in the field. The research approach uses qualitative methods with data collection techniques through direct observation, in-depth interviews with hotel managers and staff, and documentation studies related to the food production and serving processes. The research results indicate that the most effective food waste prevention strategies include ongoing guest education on responsible consumption behavior, the implementation of flexible and adaptive portion sizes tailored to guest needs, and staff capacity building through training on food management and waste mitigation. Furthermore, strengthening coordination between the kitchen, restaurant service, and management is also crucial in ensuring optimal strategy implementation.
These findings provide practical and academic contributions to the tourism industry by offering recommendations that can serve as a basis for developing more efficient and sustainable policies and operational practices, thereby reducing the negative impact of food waste while improving the quality of buffet service.
Abstract:The identification of error types based on Newman’s Procedure includes reading, comprehension, transformation, process skills, and answer encoding. The objective of this study is to describe the analysis of students’ errors…
errors in solving mathematical logic problems based on Newman’s Procedure. This research adopts a descriptive qualitative approach involving first year students enrolled in the mathematical logic course within the Information Systems program. Data were collected through a diagnostic test administered to three students representing different levels of academic ability: one low ability student, one moderate ability student, and one high ability student. Students’ ability levels were measured based on tests covering compound propositional logic and logical operations. Data analysis was conducted by classifying errors at each stage of Newman’s Procedure, tracing the underlying factors contributing to these errors, and relating them to students’ logical reasoning abilities. Accordingly, the research method employed in this study is descriptive qualitative research. The resulting error classifications were subsequently used by lecturers as a basis for recommending improvements in instructional strategies. The results indicate that students with low ability made errors across all stages from K1 to K5, students with moderate ability tended to make errors at the case exploration and process skills stages, while students with high ability were able to complete all stages systematically and consistently. These findings confirm that the Newman Procedure is effective in mapping students’ thinking errors. Therefore, the implementation of differentiated learning strategies that emphasize problem comprehension, case exploration, and logical verification is recommended to enhance students’ reasoning abilities
Abstract:ABSTRACT The purpose of this study was to determine the effect of bonus packs and product quality on consumer purchasing decisions at PT. Alamjaya Wirasentosa Tg. Morawa Deli Serdang, North Sumatra. The population in this…
his study are consumers at PT. Alamjaya Wirasentosa Tg. Morawa Deli Serdang North Sumatra as many as 379 consumers for one week while the determination technique is random sampling with the withdrawal technique using the Slovin formula. So that the sample in this study amounted to 79 respondents. The sources of data in this study are primary data and secondary data. Where the primary data from observations, interviews and questionnaires. While secondary data can be from data that has been documented. While the data analysis techniques used are descriptive analysis and multiple linear regression. The results of multiple regression analysis are Y = 8.898 + 0.193X1 + 0.548X2 + e which shows that the bonus pack and product quality have a positive and significant effect on consumer purchasing decisions. While the results of the (t) test or partial test show that the bonus pack has a positive and significant effect on consumer purchasing decisions where it can be seen that the tcount value is 2.125 > ttable 1.992 and the product quality variable also has a positive and significant effect on consumer purchasing decisions where it can be seen that the tcount value is 9.425 > ttable 1992. The results of the coefficient of determination with a correlation regression value of 0.814, meaning that together the bonus pack and product quality on consumer purchasing decisions at PT. Alamjaya Wirasentosa Tg. Morawa Deli Serdang North Sumatra has contributed to a strong degree. Then the coefficient of determination (R2) is 0.653 (65.3%). So it can be said that 65.3% of the variation in the dependent variable, namely the bonus pack and product quality in the model, can explain the purchasing decision variables at PT. Alamjaya Wirasentosa while the remaining 34.7% is influenced by other variables outside the model.
Keyword: Bonus Pack, Product Quality, Purchase Decision
Abstract:This study aims to analyze the effectiveness of fulfilling children’s rights to maintenance after divorce at the Sibuhuan Religious Court by examining the legal foundations, the implementation of court decisions, and the…
he obstacles in their enforcement. This research employs a qualitative juridical-empirical approach through the analysis of statutory regulations, legal literature, and relevant court practices. The findings indicate that although fathers’ obligations to provide child maintenance are clearly regulated under both Islamic law and Indonesian positive law, their implementation in practice remains inadequate. The main obstacles include low legal awareness among the parties, economic constraints, weak mechanisms for monitoring the execution of court decisions, and institutional limitations within the Religious Court in ensuring continuous compliance. This study emphasizes that the effectiveness of child protection cannot rely solely on judicial rulings but requires strengthening institutional mechanisms, optimizing the role of mediation, and increasing public legal awareness. Therefore, fulfilling child maintenance rights after divorce should be positioned as an integral part of realizing substantive justice and protecting the best interests of the child.
Abstract:Student brawls involving children remain a recurring social phenomenon in Indonesia and frequently result in serious criminal offenses, including those causing death. Children as perpetrators of criminal acts occupy a special…
ecial position within the criminal justice system; therefore, their criminal liability cannot be equated with that of adults. This study aims to analyze the criminal liability of children involved in brawls resulting in death and to examine the application of legal provisions in the Decision of the Tanjung Karang District Court based on the Child Protection Act and the Juvenile Criminal Justice System. The research employs normative juridical and empirical juridical approaches through the study of statutory regulations, analysis of court decisions, and interviews with law enforcement officers. The data were analyzed qualitatively to describe the implementation of juvenile criminal law. The findings indicate that child offenders may still be held criminally liable while observing the principle of the best interest of the child. Judges consider both juridical and non-juridical aspects, including the child’s role in the offense, age, psychological condition, and social inquiry reports, resulting in sanctions that emphasize rehabilitation rather than retribution. This study concludes that the application of juvenile criminal law in cases of brawls resulting in death is in accordance with prevailing legal provisions; however, improvements in the quality of case handling by law enforcement agencies are still necessary to ensure balanced and sustainable child protection and justice for victims.
Abstract:This study is motivated by the increasing use of TikTok as a digital promotional medium through discount vouchers. In an increasingly competitive business environment, digital promotion not only aims to attract consumer…
interest but also to enhance customer satisfaction in order to encourage repeat purchases. Ayam Bersih Berkah in Ciparay District utilizes TikTok sales promotions as a digital marketing strategy to retain its customers. The purpose of this study is to examine the effect of TikTok sales promotions (discount vouchers) and customer satisfaction on consumers’ repurchase intention at Ayam Bersih Berkah in Ciparay District. This research employs a quantitative method with descriptive and verificative approaches. Data were collected through questionnaires distributed to consumers who had purchased Ayam Bersih Berkah products via TikTok. The research population consisted of consumers over a one-year period, and the sample was determined using the Slovin formula, resulting in 100 respondents. Data analysis was conducted using validity tests, reliability tests, classical assumption tests, multiple linear regression analysis, t-tests, and F-tests with SPSS version 25. The results indicate that TikTok sales promotions (discount vouchers) and customer satisfaction have a positive and significant effect on repurchase intention, both partially and simultaneously. Therefore, it can be concluded that effective TikTok sales promotions supported by high customer satisfaction can encourage sustainable repeat purchases.
Abstract:Breast cancer remained the most frequently diagnosed cancer among women and continued to contribute substantially to morbidity and mortality, particularly in developing countries. In Indonesia, most breast cancer cases were…
ere detected at an advanced stage, indicating inadequate knowledge and low awareness of early detection. This study aimed to identify factors influencing women’s knowledge of breast cancer through a systematic literature review.
A literature review was conducted using the Preferred Reporting Items for Systematic Reviews. Ten national and international research articles published between 2021 and 2025 were analyzed using a qualitative descriptive approach supported by simple descriptive statistics through vote counting. The results showed that women’s knowledge of breast cancer was influenced by internal and external factors. Internal factors included education level, age, attitudes and awareness, and psychological factors. External factors comprised access to information and educational media, the role of health professionals, educational interventions, socioeconomic status, cultural norms, and family support. Education level and access to information were identified as the most dominant factors based on their frequency across the reviewed studies.
It was concluded that women’s knowledge of breast cancer was shaped by the interaction between individual characteristics and social environments. Comprehensive and sustainable health education strategies were therefore required to improve breast cancer awareness and support early detection practices.
Abstract:The objective of this study was to examine how deepfake-based humor becomes socially acceptable despite its potential to function as digital harassment. This study focused on psychological mechanisms that explain audience…
e tolerance and normalization of harmful, identity-based humorous content in online environments. This study used a scoping review design to map and synthesize existing research across psychology, media studies, and cyberpsychology. The sources were identified through searches in major academic databases and were selected based on their relevance to deepfake technology, digital humor, online harassment, and psychological processes such as moral disengagement, online disinhibition, empathy reduction, and social norm reinforcement. The results indicate that acceptance of deepfake-based humor is commonly supported by four interrelated mechanisms, namely normalization through participatory digital culture, psychological distancing that weakens empathy, moral ambiguity created by humorous framing, and reduced accountability through diffusion of responsibility in online spaces. In addition, the literature conceptualizes deepfake humor as a hybrid phenomenon situated between remix-based entertainment and identity-targeting harm, shaped by platform visibility and engagement dynamics. This review highlights that deepfake-based humor may be tolerated not because it is harmless, but because it is routinely framed as “just a joke,” making its harm easier to minimize and socially overlook. Therefore, this study emphasizes the need for more direct empirical research and stronger interventions to prevent deepfake-based humor from becoming a normalized form of digital harassment in increasingly synthetic digital environments.