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:The beauty and skincare industry in Indonesia is growing rapidly and promising. However, behind this growth, there has been a revelation of numerous ingredients in skincare products that do not match their claims, with many…
any containing harmful substances such as mercury, hydroquinone, and more. This issue began to surface when a beauty doctor, often referred to as the "Detective Doctor," examined and exposed skincare products suspected of being unregistered and containing dangerous ingredients. This research aims to analyze the role of health communication in raising public awareness about the skincare mafia practices through the role of the "Detective Doctor." The method used is qualitative descriptive analysis with case studies of several campaigns conducted by the "Detective Doctor" on social media and other public channels. The results show that the "Detective Doctor" not only reveals dangerous skincare products through scientific research but also plays a role in delivering information to the public via accessible communication platforms such as social media and podcasts. This campaign successfully increased public awareness of the importance of choosing safe beauty products, as well as the importance of verifying skincare product ingredients. This research highlights the significant role of health communication in combating illegal practices in the beauty industry and demonstrates how the "Detective Doctor" can be an agent of change in public health education.
Abstract:The emergence of consumer boycotts driven by socio-political issues reflects a fundamental shift in consumer behavior in the digital era. In Indonesia, a country characterized by high religiosity and extensive social media…
ia engagement, the rapid dissemination of negative information through electronic word of mouth (e-WOM) can trigger strong emotional reactions toward brands. Starbucks Indonesia represents a salient case in which the brand became associated with the Israel–Palestine conflict, generating moral debates, religious sentiments, and intense brand-related hostility in digital spaces. In this context, consumers act not merely as rational economic actors, but as moral agents whose purchasing decisions are influenced by deeply held values and beliefs. This study aims to examine the effects of e-WOM and religiosity on purchase intention, with brand hate serving as a moderating variable among Starbucks consumers in Indonesia. Specifically, the research investigates how exposure to negative online narratives and consumers’ religiosity shape emotional responses in the form of brand hate, and how these responses influence purchasing intentions within a boycott context. A quantitative research design was employed using a survey method targeting Starbucks consumers in Indonesia who were aware of the boycott related to the Israel–Palestine conflict. Data were collected through structured questionnaires and analyzed using structural equation modeling to assess both direct and indirect relationships among variables, including the moderating role of brand hate. This approach enables a comprehensive understanding of the psychological and behavioral mechanisms underlying consumer responses to value-laden and morally sensitive issues. The findings reveal that electronic word of mouth has a significant effect on purchase intention. Religiosity also influences purchase intention, both directly and indirectly through the formation of brand hate. Moreover, brand hate significantly moderates the relationship between e-WOM and purchase intention, such that higher levels of brand hate intensify the decline in consumers’ willingness to purchase. These results highlight the critical role of morally driven negative emotions in explaining reduced purchase intention during boycott movements. This study contributes theoretically by extending consumer behavior literature through the integration of digital communication, religiosity, and negative brand emotions within a single conceptual framework. Practically, the findings suggest that global brand managers should adopt culturally and religiously sensitive communication strategies and proactively manage digital narratives to mitigate the escalation of brand hate amid socio-political controversies.
Abstract:Increasing exposure to digital content related to sexual behavior has heightened the need for education on preventing Pornography, Masturbation, and Orgasm (PMO) on platforms popular among adolescents, such as TikTok. This…
is study aims to explain how the TikTok account @nofaps.id functions as an educational platform for PMO prevention through the lens of Media Ecology theory. A qualitative approach was employed, including in-depth interviews with the account administrator and several followers, alongside observations of PMO educational content. Findings indicate that TikTok provides a digital environment facilitating the gradual development of knowledge, awareness, and behavioral change. This occurs through short-form content, engaging visuals, and interactive features, which strengthen users’ motivation, self-control, and cognitive processes throughout PMO prevention stages. Additionally, interactions between the admin and followers via comments and consultative services create a social support space that reinforces experiential learning. The study concludes that Media Ecology theory is effective in understanding how TikTok shapes an educational ecosystem around sensitive issues such as PMO addiction. Limitations include the small number of informants and focus on a single account; future research should examine multiple platforms and adopt more diverse methodologies.
Abstract:Coal mining, handling, and transportation activities are major sources of airborne particulate matter containing respirable crystalline silica, which poses significant risks to respiratory health. Silicosis remains a serious…
ious occupational and environmental disease affecting not only workers but also communities living near coal-handling areas. Physical environmental factors, including air quality, temperature, humidity, and wind speed, play an important role in influencing dust generation, dispersion, and inhalation exposure. This narrative review aims to synthesize current evidence on the influence of physical environmental conditions on silica exposure and silicosis development, integrating findings from environmental monitoring studies, epidemiological research, and experimental Wistar rat models. A literature search was conducted using major scientific databases to identify relevant peer-reviewed articles published between 2010 and 2024. The reviewed evidence indicates that prolonged or high-intensity exposure to silica dust is strongly associated with chronic pulmonary inflammation and progressive fibrosis. Environmental conditions can exacerbate exposure risk by increasing airborne particulate concentrations and respiratory vulnerability. Experimental studies using Wistar rats provide mechanistic insights into silica-induced lung injury, supporting epidemiological observations in human populations. This review highlights the importance of integrating environmental, occupational, and biological perspectives to improve risk prediction, early detection, and preventive strategies for silicosis in coal-handling regions.
Abstract:Digital transformation has reshaped the marketing communication paradigm of the banking industry in Indonesia, encouraging financial institutions to adopt creative strategies to reach digital consumers. This study aims to…
o analyze the influence of content marketing, omnichannel marketing, and electronic word of mouth (eWOM) on purchase decisions through brand awareness in BCA’s public service advertisement “Don’t Know Kasih No!”. This banking security education campaign successfully garnered more than 100 million views through its unique storytelling approach, engaging audiovisual elements, and relevant humor, making it an interesting phenomenon to be examined scientifically. This research employs a descriptive quantitative method using the Structural Equation Modeling–Partial Least Square (SEM-PLS) approach. The research population consists of Indonesian individuals aged 17–40 years (Generation Z and Millennials) who are BCA customers and have been exposed to the “Don’t Know Kasih No.!” advertisement. The sample size was determined using Cochran’s formula, resulting in a minimum of 100 respondents, selected through purposive sampling. Data were collected using an online questionnaire developed based on a five-point Likert scale containing 47 statement items. Data analysis was conducted using SmartPLS 4.0 to evaluate validity, reliability, and structural hypothesis testing.
Abstract:The mass media, as a means of providing information, plays an important role in disseminating issues that arise in society. More specifically, the mass media has the power to spread public opinion. This study aims to analyze…
lyze the extent to which mass media exposure can influence the formation of public opinion regarding government policies in the Social Services Agency of Gowa Regency and to determine the extent to which public opinion influences the implementation of government policies in the Social Services Agency of Gowa Regency. This study uses a quantitative approach with a data collection technique, namely a questionnaire, administered to 100 respondents. The focus of this study is the extent to which mass media exposure can influence the formation of public opinion regarding government policies at the Social Services Agency. The data analysis techniques used in this study were simple linear regression, T-test (partial), F-test (simultaneous), and coefficient of determination. The results of the study show that, partially, the mass media has a positive and significant effect on public opinion, while public opinion has a negative effect on the implementation of government policies.
Abstract:Exposure to X-ray radiation in conventional radiology procedures can pose a health risk, especially for accompanying caregivers of pediatric patients who only bear the risk without gaining any benefit. This study aims to…
determine the estimated equivalent dose received by accompanying caregivers of pediatric patients and the safest points during conventional radiology examinations. The method used in this research is a field survey, involving the measurement of equivalent radiation doses inside and outside the examination room using a personal dosimeter, as well as measuring the radiation dose rate at 6 points using a surveymeter. The data was processed to obtain the highest and lowest values, as well as the percentage of equivalent dose obtained compared to the established Dose Limit Value (DLV). The results showed that the highest radiation dose received by accompanying caregivers inside the examination room reached 13,46 µSv, with a percentage of 0,27% relative to the DLV, while the lowest dose recorded was 1,12 µSv, with a percentage of 0,0224% relative to the DLV. Analysis of the radiation dose rate distribution revealed that the greater the distance of the measurement point from the radiation source (tube), the smaller the dose received. In conclusion, the radiation dose received by accompanying caregivers is still below the Dose Limit Value (DLV) for caregivers, which is 5.000 µSv. However, to minimize stochastic effects, the implementation of additional protective measures, such as the use of lead aprons and selecting safer locations within the examination room, is highly recommended. These findings are expected to serve as a guide in enhancing the safety of accompanying caregivers of pediatric patients in conventional radiology units.
Abstract:Cleaning service staff working in laboratories are at high risk of exposure to hazardous materials. The use of personal protective equipment (PPE) is a crucial step in preventing occupational accidents. However, the level…
l of compliance with PPE usage varies and is influenced by the knowledge and attitude of the staff. This issue highlights the need to understand the relationship between the knowledge and attitudes of cleaning service staff and their compliance with the use of PPE. This study employed an analytical design with a cross-sectional approach. A total of 58 cleaning service staff participated as respondents, selected through total sampling. Data were collected using a structured questionnaire and analyzed using the chi-square test. The results showed that 60.3% of respondents had good knowledge regarding the use of PPE, while 73% had a positive attitude toward its usage. The chi-square test revealed a p-value of 0.03 (<0.05), indicating a significant relationship between attitude and compliance with PPE usage among cleaning service staff. The chi-square test for the relationship between knowledge and compliance yielded a p-value of 0.01 (<0.05), indicating a significant relationship between knowledge and compliance. The findings indicate that the knowledge of cleaning service staff positively correlates with their compliance in using PPE. Staff members with good knowledge were more likely to comply with PPE usage. Adequate knowledge enables staff to understand laboratory risks and the benefits of PPE in preventing exposure to hazardous materials, thereby encouraging safer behavior, promoting communication among staff, reminding one another, and embedding safety values into daily work routines.
Abstract:This study investigates the English language needs of Islamic Economic Law students at STITNU Sakinah Dharmasraya. In the era of globalization, English proficiency is crucial for academic and professional success, particularly…
ularly in fields that intersect with global issues, such as Islamic economic law. This research is using a qualitative descriptive approach, the research involved interviews, observations, and data analysis to identify students’ English competencies and challenges. The Findings in this research show that students require strong skills in reading, writing, speaking, and listening, especially to understand international literature, compose academic and legal documents, and participate in global discourse. However, students face major obstacles such as limited vocabulary rela ted to Sharia and economic terminology, and a lack of confidence in speaking due to minimal exposure. Despite these challenges, students demonstrate high motivation to improve their English for academic advancement and career opportunities. The study emphasizes the need for English instruction tailored to the specific demands of Islamic economic law to better prepare students for global competitiveness