Abstract:Student grade data is personal data that must be protected under Indonesian Law Number 27 of 2022 on Personal Data Protection, yet the rising number of data breaches in the education sector shows that such protection has…
not been optimally implemented. This study implements the 128-bit Advanced Encryption Standard (AES) algorithm combined with Huffman compression to protect the confidentiality and integrity of student grade files in Excel (.xlsx) format, and evaluates its effectiveness through functional, performance, and security testing. The system was developed as a Python desktop application with a CustomTkinter interface, in which the encryption process runs Huffman compression before AES-128, while integrity verification uses SHA-256 hashing. Testing was conducted on seven student grade files from MA Ma'ahid Kudus. The results show that all files were successfully encrypted and decrypted without failure or data alteration, with encryption times of 0.0142-0.0828 seconds and decryption times of 0.0046-0.1417 seconds. The SHA-256 hash values of the original and decrypted files were identical for all samples, yielding 100% recovery accuracy, while the file size increase from padding and header insertion ranged only from 1,092 to 1,101 bytes. The study concludes that the combination of AES-128 and Huffman compression is an effective and efficient solution for protecting student grade data in educational institutions.
Abstract:Penelitian ini bertujuan untuk menganalisis perilaku konsumen dalam keputusan pembelian cinderamata di kawasan Wisata Ke'te Kesu' Kabupaten Toraja Utara. Industri pariwisata budaya telah bertransformasi menjadi industri…
berbasis pengalaman yang mengedepankan nilai emosional, simbolik, dan kultural. Dalam konteks ini, pembelian cinderamata tidak hanya berfungsi sebagai barang konsumsi, tetapi juga sebagai simbol kenangan, identitas budaya, dan representasi pengalaman wisata. Penelitian menggunakan pendekatan kualitatif deskriptif dengan teknik pengumpulan data melalui wawancara mendalam, observasi, dan dokumentasi terhadap lima wisatawan sebagai informan kunci dan lima pelaku UMKM sebagai informan pendukung. Analisis data dilakukan melalui reduksi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa keputusan pembelian cinderamata di kawasan Wisata Ke'te Kesu' dipengaruhi oleh empat faktor utama, yaitu faktor budaya, sosial, pribadi, dan psikologis. Faktor budaya dan psikologis merupakan faktor yang paling dominan karena wisatawan memandang cinderamata sebagai representasi budaya Toraja yang autentik dan memiliki makna simbolik. Proses keputusan pembelian berlangsung melalui lima tahapan: pengenalan kebutuhan, pencarian informasi, evaluasi alternatif, keputusan pembelian, dan perilaku pasca pembelian. Wisatawan melakukan pertimbangan terhadap harga, kualitas, keunikan, dan nilai budaya produk sebelum memutuskan membeli. Pengalaman wisata yang positif memberikan pengaruh terhadap kepuasan wisatawan dan mendorong niat membeli ulang serta rekomendasi kepada orang lain. Penelitian ini menyimpulkan bahwa keputusan pembelian cinderamata di kawasan Wisata Ke'te Kesu' tidak hanya dipengaruhi oleh kebutuhan fungsional, tetapi juga oleh nilai budaya, pengalaman emosional, dan persepsi wisatawan terhadap keaslian produk budaya Toraja.
Abstract is a brief summary of the paper to help readers quickly determine the main research problem, solutions to solving This study aims to analyze consumer behavior in purchasing decisions of souvenirs at the Ke'te Kesu' Tourism Area in North Toraja Regency. The cultural tourism industry has transformed into an experience-based industry that prioritizes emotional, symbolic, and cultural values. In this context, souvenir purchases serve not only as consumer goods but also as symbols of memories, cultural identity, and representations of tourist experiences. This research employs a qualitative descriptive approach with data collection techniques through in-depth interviews, observation, and documentation involving five tourists as key informants and five MSME actors as supporting informants. Data analysis was conducted through data reduction, data display, and conclusion drawing. The results show that souvenir purchasing decisions at the Ke'te Kesu' Tourism Area are influenced by four main factors: cultural, social, personal, and psychological factors. Cultural and psychological factors are the most dominant because tourists perceive souvenirs as authentic representations of Toraja culture with symbolic meaning. The purchase decision process occurs through five stages: need recognition, information search, alternative evaluation, purchase decision, and post-purchase behavior. Tourists consider price, quality, uniqueness, and cultural value before deciding to purchase a product. Positive tourism experiences influence tourist satisfaction and encourage repeat purchase intentions and recommendations to others. This study concludes that souvenir purchasing decisions at the Ke'te Kesu' Tourism Area are not only influenced by functional needs but also by cultural values, emotional experiences, and tourists' perceptions of the authenticity of Toraja cultural products.
Abstract:Acute respiratory infection (ARI) is a common health problem among children and may cause serious complications when warning signs are not recognized early. This community service activity aimed to improve the knowledge…
of patients attending the Maternal and Child Health (KIA) clinic at Andalas Public Health Center, Padang. The activity was conducted on April 6, 2026, involving 20 participants. Education was delivered through lectures, discussion, question-and-answer sessions, and demonstrations. Knowledge was assessed using a 20-item questionnaire before and after education. The mean score increased from 14.45 at pretest to 16.10 at posttest, with a mean increase of 1.65 points. The Wilcoxon test showed a significant difference between pretest and posttest scores (p=0.009). The activity indicates that structured health education can improve participants’ immediate knowledge of ARI prevention and home care. Continued education integrated with KIA services is recommended.
Abstract:This study aims to analyze stock market reactions to Cum-Ex Dividend announcements for companies listed on the Indonesia Stock Exchange (IDX) in 2024. Market reactions were measured through abnormal returns and stock trading…
ding volume before and after Cum-Ex Dividend announcements. This study was motivated by differences in investor behavior in responding to dividend distribution information, which is regarded as a positive signal for the market. The research employed a comparative quantitative method with an event study approach. The sampling technique used was purposive sampling. Secondary data were obtained from the Indonesia Stock Exchange, comprising a sample of 88 issuers that distributed cash dividends. Research variables consisted of stock prices and stock trading volume. Data analysis was performed using dummy regression and the Wilcoxon Signed Rank Test with EViews 12 software. The results showed that the majority of issuers (81.82%) experienced significant market reactions to the Cum-Ex Dividend announcement. A total of 56.82% of issuers showed significant negative reactions consistent with the dividend drop theory, while 25% showed significant positive reactions, indicating that investors viewed dividends as a positive signal for company prospects. Meanwhile, 18.18% of issuers showed no significant reaction to dividend announcements. This study demonstrates that Cum-Ex Dividend announcements affect abnormal returns and stock trading volume, thus providing a basis for investor consideration in making investment decisions in the capital market.
Abstract:Handwashing with soap is one of the most effective public health measures for preventing gastrointestinal and respiratory infections among children. However, despite ongoing health education efforts, many children still…
do not perform proper handwashing techniques. Interactive educational approaches, such as demonstration methods combined with songs, may enhance children's practical skills more effectively than conventional instruction. This study aimed to determine the effect of health education using a demonstration method on handwashing with soap skills among children in the BTN AL community, Entrop Subdistrict, South Jayapura District. A quantitative study with a one-group pretest-posttest pre-experimental design was conducted involving 20 child participants selected through total sampling. The intervention consisted of a live demonstration of the WHO six-step handwashing technique accompanied by a modified version of the children's song Naik Becak. Participants' handwashing skills were assessed before and after the intervention using the WHO Standard Hand Hygiene Observation Checklist. Data were analyzed using the Wilcoxon Signed-Rank Test. The findings demonstrated a significant improvement in children's handwashing skills following the intervention. Before receiving health education, most participants were unable to perform the recommended handwashing procedure correctly. After the intervention, 18 participants (90%) successfully demonstrated all six handwashing steps independently, while only two participants (10%) still required assistance. Statistical analysis showed a significant difference between pretest and posttest scores (p < 0.001). The study concludes that health education delivered through a demonstration method combined with a modified children's song effectively improves handwashing with soap skills among children. This approach may serve as an innovative and engaging strategy for promoting healthy hygiene behaviors in early childhood.
Abstract:This study examines the Indonesian capital market reaction to the announcement of the appointment of Purbaya Yudhi Sadewa as Minister of Finance on September 8, 2025. Using an event study approach, the analysis focuses on…
n companies included in the LQ45 index and observes market reaction within an eleven-day event window from five trading days before to five trading days after the announcement. Market reaction is measured using abnormal return, trading volume activity, and stock volatility. The data consist of daily stock prices, trading volume, outstanding shares, and market index data obtained from capital market data sources. Because the normality test indicates that the data are not normally distributed, the hypotheses are tested using the Wilcoxon Signed Rank Test. The findings show significant differences in abnormal return, trading volume activity, and stock volatility before and after the announcement. These results indicate that the appointment of the Minister of Finance contains information value for investors and is associated with changes in price reaction, trading intensity, and perceived market risk among LQ45 stocks. The study contributes to event study literature by documenting market responses to a strategic fiscal leadership event in an emerging capital market
Abstract:This study aims to analyze the economic satisfaction of street vendors after the development of Teras Samarinda in Samarinda City based on indicators of sales volume, business profit, and financial goal attainment. This…
study employed a descriptive qualitative approach using primary data obtained through in-depth interviews with five street vendors who were selected purposively based on their experience of operating businesses both before and after the development of Teras Samarinda. Data were analyzed through data reduction, data display, and conclusion drawing techniques. To enhance data credibility, time triangulation was applied through data collection conducted at different times and days. The findings indicate that economic satisfaction has not been optimally achieved among the interviewed vendors, as reflected in declining sales volume, reduced customer numbers, and unstable daily income compared to conditions before the development. Most vendors' profits were only sufficient to cover operational expenses, causing financial goals such as savings, capital growth, and business expansion to remain largely unmet. The study concludes that economic satisfaction tended to be low among the interviewed vendors, although they continue maintaining their businesses as an adaptation strategy to survive in a changing business environment
Abstract:This study aims to analyze the differences in the financial performance of PT Pertamina Geothermal Energy Tbk before and after the disclosure of the fuel adulteration case involving its parent company. This research employs…
oys a quantitative comparative approach using quarterly financial statement data from 2024–2025. The analysis was conducted using descriptive statistics and the Wilcoxon Signed Rank Test. The results show that descriptively, most financial ratios experienced a decline, particularly in profitability and activity ratios, along with a decrease in liquidity and a slight increase in solvency. However, the Wilcoxon test results indicate that these changes are not statistically significant. These findings suggest that despite reputational pressure from the parent company’s crisis, the company’s financial performance remains relatively stable. The limited sample size is also considered a factor influencing the results
Abstract:The rapid development of digital technology and social media platforms has significantly transformed consumer purchasing behavior, particularly in relation to digital products. Social media has evolved beyond its traditional…
onal role as a communication platform and now functions as an important environment where consumers discover, evaluate, and purchase products. This study aims to explore the psychological factors that influence consumer decision-making in purchasing digital products through social media platforms. A qualitative research approach was employed to gain an in-depth understanding of consumers' experiences and perspectives. Data were collected through semi-structured in-depth interviews with social media users who had purchased digital products based on information encountered on social media platforms. The collected data were analyzed using thematic analysis to identify patterns and themes related to consumer psychology in digital purchasing behavior. The findings reveal that consumer decision-making in purchasing digital products is influenced by several interconnected psychological and social factors. Five major themes emerged from the analysis: social media as a discovery environment, cognitive evaluation of digital products, trust formation and credibility cues, psychological motivations for purchasing digital products, and social influence from peers, influencers, and online communities. The results indicate that social media plays a significant role not only in introducing digital products but also in shaping consumer perceptions, trust, and purchase intentions. Consumers actively interpret information obtained from social media, evaluate product credibility through reviews and recommendations, and rely on social interactions to reduce uncertainty before making purchase decisions. This study contributes to the understanding of consumer psychology in digital environments by highlighting how psychological motivations and social influences interact within social media platforms to shape digital purchasing decisions. The findings also provide practical insights for digital marketers and product creators to design more effective strategies that emphasize authenticity, trust-building, and community engagement in promoting digital products.
Abstract:This research aims to develop the design and packaging of Madurese Cassava Chips products at Mrs X's UMKM. The research method used is a research and development model using the ADDIE model. The sample used in this study…
totalled 55 respondents. The data collection instrument used is a questionnaire sheet in the form of a google form. There are validation results from design experts and business practitioner experts, which are very feasible. The product was then tested on 55 respondents who were divided into two groups, namely 31 respondents were consumers of Madura Cassava Chips products who had purchased the product before development with the results being quite feasible to use and 24 respondents were consumers of Madura Cassava Chips products who had purchased the product after development with the results being very feasible to use. From the results of the pretest and posttest, it was found that there were differences in product packaging design on the competitiveness of Mrs X's MSMEs before and after developing the Madura Cassava Chips product packaging design. Based on the results that have been obtained, the development of the Madura Cassava Chips product design and packaging is very feasible to use