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The exponential growth of digital music catalogs on streaming platforms such as Spotify has made personalized recommendation systems crucial for enhancing user experience. This study develops a hybrid music recommendation system that addresses both warm-user and cold-user scenarios by combining Alternating Least Squares (ALS) collaborative filtering with content-based filtering (CBF) augmented by a popularity component. The dataset consists of 8,549,544 user-track interactions and a master file of 1,204,025 tracks with ten audio features. After preprocessing, users were segmented into 14,880 warm users and 723 cold users based on a five-interaction threshold. The ALS model was trained on the user-item implicit feedback matrix and tuned through grid search over factors, alpha, and regularization. CBF was implemented using cosine similarity on normalized audio features, while popularity scores were applied for new users with insufficient history. Evaluation used Precision@10, Recall@10, and NDCG@10. The final ALS configuration achieved NDCG@10 of 0.1116, representing a 30% improvement over baseline, while the hybrid CBF improved NDCG@10 for cold users from 0.0070 to 0.0201. Findings indicate that adaptive routing among ALS, CBF, and popularity reliably handles different user states, providing a practical foundation for production-grade music recommendation systems.

The practice of adulterating RON 92 (Pertamax) fuel has the potential to violate consumer rights and is contrary to applicable laws and regulations. The practice of mixing lower-quality fuel and then marketing it as RON 92 results in material and immaterial losses for users, including reduced vehicle performance and a loss of trust in business operators. This research aims to analyze the legal protections available to consumers regarding the practice of adulterating fuel based on Law Number 8 of 1999 concerning Consumer Protection and related provisions in Law Number 22 of 2001 concerning Oil and Gas. The research method used is normative legal research with a library research approach, through analysis of relevant laws and regulations, scientific literature, and secondary legal sources. The results indicate that the practice of adulterating fuel violates consumers' rights to comfort, security, safety, and accurate information as stipulated in Article 4 of the Consumer Protection Law, and violates the obligations of business actors as stipulated in Articles 7 and 8 of the Consumer Protection Law. Business actors can be held accountable for civil damages, dispute resolution through the Consumer Dispute Resolution Agency (BPSK), or subject to administrative and criminal sanctions in accordance with the Oil and Gas Law. Therefore, legal protection for consumers in cases of fuel adulteration requires an interconnectedness between effective government oversight, firm law enforcement, business actor accountability, and increased consumer legal awareness to ensure legal certainty and fairness in trade activities.

Although cryptographic security is often the main concern in e-voting system development, practical implementation failures are frequently associated with poor user interfaces that increase cognitive load and voting errors. This study evaluates the effectiveness of User-Centered Design (UCD) interventions in improving usability and voter confidence in an e-voting system. A one-group pretest-posttest design was applied to 36 respondents representing novice voters. Usability was measured using the System Usability Scale (SUS) before and after the interface redesign. The intervention focused on visual hierarchy, navigation consistency, status visibility, and error prevention. The results show a statistically significant improvement, with the mean SUS score increasing from 69.10 in the marginal category to 95.76 in the excellent category. The paired sample t-test produced t(35) = -7.3441 with p < 0.0001, while Cohen's d reached 1.2130, indicating a large practical effect. The standard deviation also decreased from 21.98 to 3.09, demonstrating a more consistent user experience. These findings indicate that interface optimization is essential for strengthening accessibility, voting accuracy, and user trust in digital democracy systems.

This study aims to analyze the implementation of Good Governance principles—transparency, accountability, participation, effectiveness, efficiency, rule of law, and inclusivity—in public administration services at the Sungai Tabukan Sub-district Office, especially in the Service, Economy, and Social Welfare Section. The method used is a qualitative approach with a case study design through observation, in-depth interviews, and documentation of sub-district officials and service user communities. The data was analyzed through reduction, presentation, and conclusion drawn, and tested for validity by triangulation and member check techniques. The results of the study show that procedural transparency, compliance with SOPs, and administrative accountability mechanisms have been running relatively well, so that services such as SKKM, marriage recommendations, and population documents can be processed openly and can be traced. However, the limitations of human resources, facilities, and digital infrastructure cause the effectiveness and efficiency of services to still be conditional and depend on key actors. Community participation has been facilitated through forums and feedback channels, but it is still dominated by village intermediaries so that the direct involvement of residents is not optimal. In terms of the rule of law and inclusivity, services have been based on regulations and are non-discriminatory, although there are still inequality in access and speed of services between regions. The main supporting factors include leadership commitment, internal work culture, and the existence of SOPs, while inhibiting factors include limited human resources, facilities, and information systems that have not been integrated. It was concluded that the implementation of Good Governance in public administration services in Sungai Tabukan District has been running functionally, but has not been fully consolidated systemically. Therefore, it is necessary to strengthen policies through the digitization of services, increase the capacity of the apparatus, improve facilities, integrate data-based accountability and transparency systems, and expand citizen participation channels to realize more professional, fair, and sustainable public administration service.

The development of information technology encourages government agencies to switch from manual systems to digital systems that are more efficient and accurate. One important aspect of office administration is recording the absence of village officials, which is often done conventionally so it is prone to errors, data manipulation, and takes longer in the recapitulation process. Based on these problems, this research designs and implements a Qr-Code based attendance system at the Palatta Village Government Office. The design of this system is to provide a faster, more accurate and transparent attendance solution by utilizing Qr-Code technology which is integrated into a web-based application. The system is built with main features such as user login, Qr-Code scanning, attendance history, as well as an admin dashboard to manage data and generate reports. The results of implementation and testing using the Black Box method show that all functions run as required. Testing on users also shows that the system is easy to use, speeds up the attendance process, and helps admins in monitoring and recapitulating data. Thus, this Qr-Code attendance system is suitable to be implemented as a substitute for manual methods to increase work efficiency and discipline in the village office environment.

The development of information and communication technology encourages Micro, Small, and Medium Enterprises (MSMEs) to manage data more effectively, efficiently, and integratively to create consumer loyalty. Efforts can be made using a web-based Customer Relationship Management (CRM) Information system to manage customer data and transaction history in an integrated, effective, and efficient manner. The many complaints from several stores in Grobogan Regency, especially Toko Sumber Rezeki, regarding errors in inputting consumer data, data loss, and difficulties in preparing sales reports, prompted the author to conduct this research with the aim of providing practical contributions to MSMEs in managing data effectively by using a CRM (Customer Relationship Management) information system. The method used in this research is Research and Development (R&D) with a Waterfall software development model that includes the stages of needs analysis, system design, implementation, testing, and maintenance. The system was developed using PHP with the Laravel 11 framework and a MySQL database. The system's main features include customer data management, real-time transaction recording, integrated purchase history, a sales summary dashboard, and reports that can be exported to PDF and Excel. The results of this study indicate that the system meets user needs and helps improve recording efficiency and data accuracy. Therefore, the designed system can support data-driven decision-making and improve the quality of customer service at the Sumber Rejeki Store in Grobogan Regency.

The rapid development of information technology has transformed social media into a digital space that plays a crucial role in shaping the mindset, behavior, and lifestyle of young generations. TikTok is one of the most dominant platforms used by Generation Z, particularly students, due to its ability to present algorithm-based content that aligns with user interests. This condition has the potential to cause psychological stress in the form of Fear of Missing Out (FOMO), which reflects social anxiety due to the perception of being late in keeping up with trends, information, or experiences that hold a dominant position in the social landscape. This research initiative aims to examine the influence of TikTok usage on the lifestyle configurations of Generation Z students, with FOMO serving as a determinant that strengthens this relationship. This study is designed within the quantitative tradition with a positivist epistemological orientation. The study population includes 250 students from the Faculty of Computer Science at the National Pasim University in Bandung, with a sample size of 72 respondents derived using Slovin's formula. The analysis results indicate that TikTok usage and the level of FOMO have a positive and significant impact on changes in students' lifestyles. The regression coefficient estimates are in the positive direction, with a significance value exceeding the critical threshold of 0.05, indicating a unidirectional relationship between the variables. The model determination estimate, at around 57.5%, confirms that TikTok and FOMO are able to explain a significant portion of the variation in students' lifestyles, while the remainder is influenced by factors outside the scope of this study. This finding confirms that TikTok functions not only as a medium of entertainment but also as an agent shaping lifestyles influenced by social and psychological pressures. Therefore, strengthening digital literacy is crucial so that students can use social media more rationally and responsibly.

The development of digital technology has significantly transformed consumer purchasing behavior in recent years. Shopping activities that were previously conducted in person have now shifted to e-commerce and social commerce platforms that offer greater convenience, speed, accessibility, and a variety of attractive promotions. Two platforms experiencing rapid growth in Indonesia are Shopee and TikTok Shop, both of which have gained popularity among diverse consumer segments. These platforms not only offer a wide range of products but also provide interactive shopping experiences through features such as promotions, live shopping, consumer reviews, personalized recommendations, and ease of transactions. This situation has led to notable changes in consumers' purchasing decision-making processes and preferences. Factors such as app usability, promotional strategies, consumer trust, social media influence, user engagement, and evolving digital lifestyles are becoming increasingly dominant in determining purchasing decisions. Therefore, this study aims to analyze the key factors influencing consumer purchasing decisions on the Shopee and TikTok Shop platforms in the digital era, as well as to provide deeper insights into consumer behavior in an increasingly digital marketplace.

The advancement of financial technology has resulted in the creation of electronic wallets that serve not only as payment instruments but also as platforms for electronic transactions and digital loan services. This situation engenders a conflict between the implementation and the prevailing regulation, specifically Bank Indonesia Regulation Number 18/40/PBI/2016 regarding Payment Transaction Processing, which raises concerns about legal certainty and user protection, particularly in relation to the delineation of supervisory authority between Bank Indonesia and the Financial Services Authority. This research aims to elucidate the regulation of electronic wallets in terms of legal clarity, legal protection, and oversight by the Financial Services Authority and Bank Indonesia concerning the adoption of electronic wallets. This study employs a normative legal methodology. Data is derived from secondary sources, encompassing primary, secondary, and tertiary legal literature. This study employs both a legislative and a conceptual methodology. The research findings suggest that the regulation of electronic wallets, as per Bank Indonesia Regulation, has not entirely met user requirements. Bank Indonesia Regulation Number 18/40/PBI/2016, on the Implementation of Payment Transaction Processing, does not explicitly address legal certainty and legal protection for users who deposit funds or utilise digital loan services on electronic wallets. This situation establishes a disparity between regulatory implementation and governing rules, which may result in insufficient oversight of electronic wallet operations and a discord of authority between Bank Indonesia and the Financial Services Authority regarding the supervision of financial transactions in Indonesia.

This study seeks to examine the impact of Social Media Marketing and Affiliate Marketing on Purchase Intent on the Shopee platform in Medan City. The research employed a quantitative methodology via a survey of 384 Shopee user respondents. We used Partial Least Square Structural Equation Modeling (SEM-PLS) to analyze the data. The findings indicated that Social Media Marketing exerts a positive and significant influence on Willingness to Buy, evidenced by a coefficient value of 0.104 (T-statistic = 2.987; P-value = 0.003). Affiliate Marketing likewise has a positive and substantial effect on Willingness to Buy, with a coefficient value of 0.284 (T-statistic = 5.947; P-value = 0.000). The study's findings suggest that management of e-commerce platforms like Shopee should make the most of social media to reach more people and get more people involved. Also, working with the correct affiliate partners can make product suggestions stronger and bring in more customers, which can lead to a big increase in sales conversions.

This study aims to examine how an online bajaj-based pick-up and drop-off service developed by a kindergarten is implemented. The bajaj application is considered an innovation in a community-based educational transportation system. The limitations of conventional pick-up and drop-off systems in providing optimal efficiency, transparency, and safety form the basis of this research. This study employed a qualitative approach using a case study method, with data collected through observation, interviews, and documentation. The results indicate that the use of the online bajaj application improves service quality through features such as booking services, real-time location tracking,and notifications to parents, which enhance time efficiency, transparency, and a sense of security. Compared to commercial transportation services, the community-based service model allows for more controlled operational management. However, challenges such as low digital literacy among users, limited network infrastructure, and potential data security risks were also identified. Critically, this innovation contributes significantly to the development of the smart mobility concept in the education sector, although it still requires improvement in terms of system sustainability and user data protection.

The development of digital technology has transformed interpersonal interaction patterns through online dating applications such as Tinder. Even though the use of Tinder in Indonesia has increased significantly, there are striking differences in communication styles between male and female users in managing these digital relationships. This study aims to analyze in depth the communication style of men as Tinder users in the digital dating search process. Using the framework of four main communication styles: emotive, director, reflective, and supportive style traits, this research explores how men navigate interactions that lack verbal cues and are asynchronous. The research method used is phenomenology by collecting data through participatory observation in the application and in-depth interviews with five male informants who are active Tinder users. The results of the study show that each informant applies different communication styles to build comfort and a positive self-image (selective self-presentation) to achieve their romantic goals. These findings identify that variations in men's communication styles are influenced by risk perception, privacy management, and self-presentation strategies in digital spaces. This research contributes to the literature on computer-mediated communication (CMC) in the context of online dating dynamics in Indonesia.

This community service program addresses the growing ethical challenges of design practices in social media, particularly among children and adolescents. Social media platforms are not merely communication tools but persuasive digital products that influence behavior, emotions, and information consumption. This program aimed to enhance ethical design literacy among members of the Children’s forum in Tangerang Regency through an interactive workshop combining theoretical education, case studies, and practical design exercises. The methodology involved participatory training sessions, including lectures on design ethics, identification of dark patterns, privacy-by-design practices, and hands-on content creation using social media platforms. The results indicate increased participant awareness of ethical principles such as transparency, visual honesty, respect for copyright, and privacy protection. Participants demonstrated improved ability to identify unethical design elements and to produce simple yet responsible visual content. The program contributes to strengthening digital ethics awareness among young social media users and highlights the importance of collaborative, community-based approaches in fostering responsible digital culture.

The limited availability of integrated digital tourism information in Blitar Raya has made it challenging for visitors to plan their travel routes efficiently. This research aims to develop an Android-based Geographic Information System (GIS) that integrates the Google Maps API with the Bellman-Ford algorithm to optimize the shortest travel routes among tourism destinations. The system was developed using the Rapid Application Development (RAD) methodology, emphasizing user involvement through iterative prototyping and feedback. Primary data were collected from field observations, semi-structured interviews with tourists and local administrators, and beta testing involving 52 respondents, while secondary data were obtained from the Blitar Tourism Board and BPS statistical databases. The implementation integrates the Google Distance Matrix API to construct a weighted graph, which is processed by the Bellman-Ford algorithm, demonstrating higher route stability and accuracy than the Dijkstra and Haversine approaches in small-to-medium graph structures. The system achieved an 84.46% user acceptance rate, categorized as “Excellent” according to the ISO/IEC 25010 usability standard. Empirical findings show that the average response time of 1.5–2.5 seconds indicates high computational efficiency for real-time map rendering. This study contributes theoretically by presenting an algorithmic integration framework for mobile GIS applications and practically by offering a functional digital tourism platform to enhance local tourism management. The findings also suggest that combining RAD with algorithmic optimization can effectively bridge the gap between user experience and computational performance in tourism-based GIS systems.

This study aimed to analyze the transformation of consumer behavior in the era of generative artificial intelligence, particularly focusing on the influence of intelligent content on perceived value and purchase intention. The primary issue addressed was how content generated by artificial intelligence shaped consumers’ cognitive and affective evaluations within an increasingly competitive digital environment. This study employed a quantitative approach using Structural Equation Modeling on data collected from 320 respondents who were users of digital platforms. The findings indicated that intelligent content significantly enhanced consumers’ perceived value, which subsequently exerted a positive effect on purchase intention. Furthermore, perceived value was found to partially mediate the relationship between intelligent content and purchase intention. These results suggested that the utilization of generative artificial intelligence in digital marketing strategies was capable of creating more relevant and personalized experiences, thereby strengthening purchasing decisions. In conclusion, the integration of artificial intelligence technology in content creation represented a key factor in shaping modern consumer behavior.

This study aims to design and develop a web-based Eweta Village Tourism Promotion Information System using the Codeigniter Framework to facilitate the dissemination of information on village tourist destinations to the community and tourists. Lokomboro Village has natural and cultural tourism potential that has not been optimally managed, especially in terms of digital promotion. This system was built using the Waterfall software development method, which includes the stages of requirements analysis, system design, implementation, testing, and maintenance. This web-based system is equipped with features such as tourist attraction information, photo galleries, tourism activity schedules, and contact details for managers. The CodeIgniter Framework was chosen for its advantages in MVC structure, which facilitates code management, security, and application scalability. Testing results show that the system is capable of displaying promotional information interactively, responsively, and accessible at any time by interested users, making it suitable for use as a tourism promotion medium for Pada Eweta Village.

This research was conducted with the aim of developing an automation system for recording warehouse inventory based on Google Sheets to improve the effectiveness and efficiency of the stocktaking process at the Cresta Management warehouse. This research was based on problems in the semi-manual process that used logbooks and separate files for each group of goods, which caused problems such as data duplication, limited data access, lack of data transparency, and lengthy recapitulation process. This research used the Research and Development method using the ADDIE model (Analyze, Design, Develop, Implement, and Evaluate). Data were collected through observastion, interviews, questionnaires, and documentation. The result of this development is a system consisting of a login page, goods transcation recording, warehouse dashboard, stock reports, stock cards, and PDF report exports. This study also produced evaluation scores regarding the system’s feasibilty: 93,3% from the first media expert, 80% from the second media expert, 73,3% from the material expert, and 91,75% from users through User Acceptance Testing. These evaluation results indicate that the system is feasible for use and implementation in supporting warehouse operations, as it provides real time data updates, improves the efficiency of goods reporting, and enhances warehouse transactions.

This study aims to analyze the factors that influence consumer purchasing decisions on the Shopee e-commerce platform. The variables studied include promotion (X1), price (X2), product completeness (X3), and product quality (X4) on purchasing decisions (Y). This study uses a quantitative approach with a survey method, where data is collected through questionnaires distributed to active Shopee users. The research sample consisted of 100 respondents selected using a specific sampling technique (eg purposive sampling). Data analysis was carried out using multiple linear regression techniques to determine the effect of each independent variable on the dependent variable. The results of the study show that all independent variables, namely promotion, price, product completeness, and product quality, simultaneously have a significant effect on consumer purchasing decisions. Partially, the variables promotion (X1), price (X2), product completeness (X3), and product quality (X4) on purchasing decisions (Y) have the greatest influence on purchasing decisions. These findings emphasize the importance of a marketing strategy that focuses on attractive promotions, competitive pricing, completeness of products offered, and improving product quality to improve consumer purchasing decisions on Shopee e-commerce. This research is expected to contribute to the development of marketing strategies in e-commerce, especially for Shopee, as well as being a reference for further research in similar fields.

The relocation of the Social Welfare Shelter Environment (Lingkungan Pondok Sosial/Liponsos) in Sidoarjo represents a strategic effort to address social and spatial issues characterized by overcapacity, limited facilities, and an inadequate living environment that does not fully support the physical and psychological needs of people with social welfare problems (PMKS). These conditions indicate that the challenges faced by Liponsos are not merely social in nature but are also closely related to the quality of the built environment, which significantly influences the rehabilitation and recovery process of its residents. Therefore, a human-centered design approach is required in planning social service facilities. This study aims to analyze the application of humanistic architecture principles in the planned relocation of the Sidoarjo Liponsos as a foundation for creating a more livable, dignified, and user-oriented environment. The research employs a literature review method by collecting data from relevant books, journals, regulations, and previous studies. The analysis is conducted using descriptive and content analysis to examine the relationship between humanistic architectural principles and the needs of residents within social welfare facilities. The results indicate that the humanistic architectural approach is highly relevant to the relocation of Liponsos, particularly through spatial zoning based on levels of privacy and security, the provision of green open spaces and communal areas as media for social interaction and therapeutic activities, and the design of self-development spaces that support rehabilitation and empowerment. The implementation of these principles is expected to create a built environment that not only fulfills basic functional requirements but also supports psychological recovery, social stability, and sustainable improvement in the quality of life of PMKS residents.  

Tes psikologis yang handal dan objektif sangat penting dalam perekrutan anggota Kepolisian Nasional Indonesia untuk memastikan seleksi kandidat yang berkualitas. Namun, metode pengujian psikologis konvensional seringkali memakan waktu, rentan terhadap kesalahan manusia, dan kurang transparan dalam pengolahan data dan manajemen hasil. Studi ini bertujuan untuk merancang dan mengimplementasikan Sistem Informasi Pengujian Psikologis Berbasis Web (E-Psikotes) untuk mendukung proses seleksi psikologis calon polisi di Polda Jawa Tengah. Data dikumpulkan melalui observasi prosedur pengujian yang ada, wawancara dengan psikolog dan anggota komite seleksi, kuesioner, dan analisis dokumentasi. Sistem dikembangkan menggunakan kerangka kerja CodeIgniter 3 dengan arsitektur Model View Controller (MVC), sedangkan MySQL digunakan sebagai sistem manajemen basis data. Evaluasi sistem melibatkan pengujian black box dan User Acceptance Test (UAT) untuk menilai fungsionalitas, kegunaan, dan kepuasan pengguna. Hasil penelitian menunjukkan bahwa Sistem Informasi Tes Psikologi Berbasis Web (E-Psikotes) untuk Seleksi Calon Anggota Kepolisian Republik Indonesia yang diusulkan secara efektif mengotomatiskan proses administrasi, penilaian, dan pelaporan tes psikologis. Sistem ini meningkatkan efisiensi, akurasi, dan transparansi dibandingkan dengan metode konvensional. Hasil evaluasi pengguna menunjukkan tingkat penerimaan yang tinggi, terutama dalam hal kemudahan penggunaan dan keandalan. Studi ini memberikan kontribusi pada bidang sistem informasi dengan menyediakan model praktis untuk pengujian psikologis digital dalam rekrutmen kepolisian. Temuan menunjukkan bahwa implementasi sistem pengujian psikologis berbasis web dapat mendukung transformasi digital dan meningkatkan kualitas pengambilan keputusan dalam proses rekrutmen sektor publik.