Publication Search

This research aims to design and develop a prototype wave power plant that utilizes the vertical motion of a buoy as a source of mechanical energy, which is then converted into electrical energy using a recoil starter mechanism. The system is designed to be installed at the stern of a prototype ship. The vertical movement of the buoy caused by ocean waves is transmitted to the recoil starter through a drive rope, producing a stable one-way rotational motion. This rotation is further transmitted to a gearbox to increase rotational speed before driving a DC generator. The electrical energy generated is stored in a 12 VDC battery, supported by a buck–booster converter to stabilize the output voltage. This study employs an experimental engineering approach to evaluate system performance based on empirical test data. The main components of the system include a buoy as a wave energy collector, a recoil starter as the initial rotating mechanism, a DC generator as the electrical energy producer, a buck–booster converter as a voltage regulator, a 12 VDC battery as an energy storage unit, and a monitoring system based on an ESP32 microcontroller integrated with a PZEM-017 sensor. Experimental results show that the recoil starter operates effectively in driving the generator under both no- load and buoy-loaded conditions. Increases in generator rotational speed are directly proportional to increases in output voltage and current. The PZEM-017 sensor demonstrates a high level of measurement accuracy, approaching 100% when compared with a multimeter. Overall, the proposed wave power generation system functions reliably and shows potential for further development as a small-scale alternative renewable energy source.

This study investigates the impact of TikTok Live, viral content, and Fear of Missing Out (FOMO) on the purchasing decisions of Gen Z consumers in Jombang City for food and drink products. Social media, particularly TikTok, has rapidly expanded and functions as a potent digital marketing instrument. It influences consumer behavior through live broadcasting and the dissemination of viral content. The objective is to examine the influence of these three factors on purchasing decisions. This study employs a quantitative methodology. The data was obtained from surveys administered to 60 Gen Z participants who purchased food or beverages following exposure to TikTok advertising. Samples were selected by purposive sampling. Data were examined using multiple linear regression with SPSS software. Findings indicate that TikTok Live exerts a favorable and substantial impact on purchasing decisions. Viral material exerts no substantial impact. FOMO exerts a detrimental and substantial impact. The results indicate that TikTok live streaming effectively enhances consumer purchases, especially within the food industry.  

This study examines the anthropomorphic expression “the LORD came down to see” in Genesis 11:5 through an integrated historical–grammatical exegetical approach. The main objective is to analyze the lexical meaning, grammatical structure, historical context, and theological implications of the phrase within the framework of Old Testament theology. The research employs a qualitative library method, focusing on the Hebrew text supported by lexicons, commentaries, and Ancient Near Eastern studies. The findings indicate that the verb יָרַד (yārad) does not merely denote a spatial descent but signifies divine intervention, while רָאָה (rāʾāh) conveys evaluative and judicial observation. Grammatically, the use of the wayyiqtol form followed by an infinitive construct emphasizes intentional and purposeful divine action. Historically, the expression functions polemically against Mesopotamian religious concepts, particularly the idea of ziggurats as places where deities descend. Theologically, this anthropomorphic language serves as a medium to articulate the dynamic relationship between divine transcendence and immanence. Therefore, the phrase should not be understood literally but as a theological construct that communicates God’s active involvement and sovereign authority in human history.

This article critically examines the training program document for mentors of First Communion candidates at St. Paul Pringgolayan Parish as an institutional religious text. The study employs Peter L. Berger’s theory of the social construction of reality and Michel Foucault’s discourse analysis of power as its analytical framework. Using a qualitative interpretive method, the research conducts an in-depth textual analysis of the document’s narrative structure, normative language, actor relations, and mechanisms of legitimation. The findings reveal that the text is not merely a plan and report of pastoral activities; it also functions as an institutional apparatus that reproduces religious reality while shaping subjects of faith through pedagogical, ritual, and administrative systems. This article argues that pastoral documents can be understood as pastoral social technologies that operate through language to structure religious experience, regulate the distribution of authority, and instill norms of faith practice. These findings contribute to the sociology of religion by demonstrating how faith formation practices at the local level constitute a concrete locus of interaction between the construction of religious meaning and the operation of discursive power.

This study aims to analyze students’ mathematical reasoning abilities in quadratic function material through the use of Desmos. The research employed a qualitative descriptive approach using a case study and usability testing method. Data were collected through post-tests and interviews involving students’ responses in solving quadratic function problems. The analysis focused on several indicators of mathematical reasoning, including procedural skills, conceptual understanding, and analytical ability. The results show that students generally demonstrate adequate procedural reasoning, particularly in substitution and computation tasks. They are also able to relate algebraic representations to geometric interpretations, such as determining intercept points and analyzing the direction of parabolas. However, limitations were found in conceptual understanding, especially in identifying graph characteristics without relying on procedural steps. The use of Desmos significantly supports the development of students’ mathematical reasoning by providing real-time visualization, facilitating exploration of function parameters, and enabling verification of results. Overall, Desmos contributes to enhancing procedural, conceptual, and analytical dimensions of mathematical reasoning, although its effectiveness depends on proper instructional design.

This community service program aims to strengthen the strategic role of Posyandu (Integrated Health Post) as a center for family health education through the innovation of its educational functions. Previously, Posyandu operations in the community tended to be limited to routine basic health services, such as weight monitoring and nutritional status recording, while the crucial aspect of health education remained suboptimal. This limitation has contributed to a lack of public understanding regarding healthy lifestyles and the prevention of chronic diseases or stunting. The methods implemented in this program included problem identification through observation, health socialization and education, specialized training for Posyandu cadres to enhance their communication capacity, and direct mentoring during activity implementation. The results demonstrated a significant increase in family knowledge regarding balanced nutrition and clean and healthy living behaviors (PHBS). Furthermore, Posyandu cadres became more active and skilled in delivering health information communicatively to the community. This program demonstrates that by strengthening its educational function, Posyandu can transform into an effective and sustainable family health learning center, significantly impacting the improvement of community health standards at the frontline level.

This research is driven by the significance of examining language meaning, particularly connotative meaning which is often used to convey implicit messages in literary works. Folktales, as one type of oral literature, often utilize character names that carry specific meanings, such as Malin Kundang from Minangkabau. The aim of this research is to uncover the connotative meaning of the character name “Malin Kundang”, as well as its relationship with the moral and cultural values of the society. The methodology involves qualitative research using semantic analysis and a descriptive approach. Data were collected from the Malin Kundang folktale text thru library study and documentation techniques. Next, the processes of identification, classification, and interpretation of meaning were done in order to examine the data. The research result show that denotatively, the name Malin Kundang only functions as the identity of the character, but connotatively, it functions as a symbol of a disobedient child who does not respect their parents. The meaning is formed from the plot of the story and reinforced by the Minangkabau cultural values that uphold respect for parents. The implications of this research indicate that the naming of characters in folklore is not only linguistic but also reflects the moral and cultural values inherited by society.

West Sumatra is one of the Indonesian regions with high exposure to natural hazards, making fast, accurate, and accessible disaster information essential. This study aims to analyze the role of the Instagram account of the West Sumatra Regional Disaster Management Agency (BPBD) in disseminating disaster information, examining both institutional management practices and public interpretation of the messages. The study used a descriptive qualitative approach. Data were collected through semi-structured interviews with ten external informants and six internal BPBD informants, supported by observation and documentation of Instagram-based disaster communication. The data were analyzed through reduction, data display, and conclusion drawing. The findings show that Instagram functions as a channel for early warning, emergency updates, disaster education, documentation, and public interaction. Internal informants described content production through field documentation, editing, 5W+1H-based narration, verification, and coordination with related agencies. Public informants perceived BPBD information as clear, credible, and useful for daily preparedness, although they expected faster updates, simpler visuals, and more interactive content. The study implies that disaster communication through Instagram needs to strengthen verification procedures, real-time updates, human resources, and two-way engagement.

This study aims to analyze the role of Gambus music education in fostering appreciation for Riau Malay oral traditions in higher education. Amidst the wave of globalization, oral traditions such as pantun, syair, and gurindam are losing their space of actualization among the younger generation. This research employs a descriptive qualitative approach with a case study design at the Universitas Islam Riau. Data were collected through participant observation, in-depth interviews, and documentation. The results indicate that Gambus music learning, which integrates experiential learning methods through three main stages textual analysis, musical practice, and contextual reflection is effective in increasing students' cultural awareness. The integration of oral tradition texts into musical materials allows students to deeply internalize moral, religious, and social values. Despite challenges such as limited curriculum time allocation, the involvement of expert practitioners serves as a key supporting factor in providing an authentic learning experience. The study concludes that Gambus music in higher education functions as a strategic educational instrument to revitalize oral traditions as a "living archive" and strengthen students' cultural identity.

This study is motivated by the limited public understanding of the symbolic meaning of properties used in the Grombyang Dance of Pemalang, where most audiences merely enjoy the performance without recognizing the cultural values embedded within it. This research aims to examine and explain the symbolic meanings of the properties used in the Grombyang Dance of Pemalang as performed at Sanggar Seni Kaloka Pemalang. The method employed is a descriptive qualitative approach using semiotic analysis based on Charles Sanders Peirce, with data collection techniques including observation, interviews, and documentation. The results of the study indicate that the performance structure of the Grombyang Dance of Pemalang consists of three main parts: the opening, the core, and the closing, supported by various elements such as theme, movement, performers, makeup, costume, musical accompaniment, stage setting, and properties. The semiotic analysis reveals that the symbolic meaning of the properties can be understood through the relationship between representamen, object, and interpretant. The main property, the irus (ladle), functions as a symbol that not only represents the act of scooping Grombyang soup but also carries a belief-related meaning as a bringer of fortune in trading activities. In conclusion, the properties in the Grombyang Dance of Pemalang serve not only as aesthetic elements but also as a medium of symbolic communication that reflects cultural, social, and belief values within the community. Therefore, they are important to be preserved and more deeply understood by the public.

This study examines the application of continuity editing in the film Kucumbu Tubuh Indahku and its role in building the film's narrative structure. The primary objective of this study is to analyze the editing techniques used and identify the editor's contribution to shaping the visual storytelling. The method used is descriptive qualitative, with primary data collected through interviews with the film editor and observations of the film itself. The results of the study indicate that continuity editing functions to maintain narrative continuity and the emotional flow that develops throughout the story. The editing techniques used in this film include cut-in, match on action, and eyeline match, all of which work to create smooth transitions between different scenes. The cutting points in the film become key elements in regulating the rhythm, visual emphasis, and dramatic intensity within the storyline. Each decision regarding the cutting point made by the editor can produce different emotional effects, which directly influence the pacing and dynamics of the story. This study emphasizes that careful editing decisions are crucial in strengthening the visual and dramatic aspects of the film and help build a strong narrative experience for the audience.

Differential equations involve derivatives of unknown functions and are widely used in mathematical modeling of various real-world problems. They can be classified based on linearity, homogeneity, coefficients, number of independent variables, degree, and order, thus requiring appropriate solution methods. One commonly used approach is the reduction of order method, which simplifies equations by reducing their order step by step. However, this method generally requires the solution of the corresponding homogeneous equation as an initial step. This study aims to solve nonhomogeneous linear ordinary differential equations of order with constant coefficients using the reduction of order method without determining the homogeneous solution. This research is a theoretical study based on relevant references concerning solution methods and types of differential equations. The procedure consists of two main stages: determining the fundamental symmetric polynomial variables based on the coefficients and constructing a sequence of solutions through first-order linear differential equations obtained from the reduction process. The results show that this method systematically produces the general solution of linear differential equations of order , making it an effective and efficient alternative approach

The Brokohan Sapi tradition in Tempursari Village, Donomulyo District, Malang Regency represents a form of local wisdom that embodies cultural and symbolic values through the use of ubo rampe. This study aims to describe the forms, meanings, and cultural values of ubo rampe in the Brokohan Sapi tradition. The study employs a qualitative method with a symbolic anthropological approach as proposed by Clifford Geertz. Data were collected through observation, interviews, and documentation, and were analyzed using an interactive analysis technique involving data reduction, data display, and conclusion drawing. The findings reveal that ubo rampe is systematically arranged in the form of food offerings, including core dishes, complementary dishes, and spiritual elements. Each component of ubo rampe carries symbolic meanings related to gratitude, safety, fertility, and hopes for prosperity. The cultural values embedded in the tradition include religious, social, ecological, economic, and philosophical values that are integrated into ritual practices. The implications of this study indicate that the Brokohan Sapi tradition functions as a medium for cultural preservation and can be utilized as a local wisdom-based learning resource in Indonesian language and literature education.

Vision+ pay television. This study uses a descriptive qualitative approach to gain an in-depth understanding of Public Relations practices at MNC Channels. Data collection techniques were carried out through observation, in-depth interviews, and documentation. Data analysis used the Miles and Huberman interactive model which includes data reduction, data presentation, and drawing conclusions. The results of the study indicate that the role of Public Relations is not yet fully optimized, especially in the strategic decision-making process. Public Relations functions more as a technical implementer of communication rather than as a management advisor. This condition has an impact on the less than optimal efforts to strengthen the Vision+ brand image. Therefore, it is necessary to strengthen the role of Public Relations as an expert prescriber, communication facilitator, problem-solving facilitator, and communication technician to support the company's communication strategy and improve brand image. In addition, this study also found that internal coordination, utilization of digital media, and consistency of communication messages are important factors in building positive public perception. The lack of integration between the Public Relations function and strategic management causes the messages delivered to be not fully aligned with brand positioning

Background: Anxiety can affect physiological functions in patients prior to surgery, including increased heart rate and respiration, changes in blood pressure and temperature, relaxation of smooth muscles in the bladder, cold and clammy skin, and dry mouth, which may reduce the patient’s energy level. Psychologically, anxiety can lead to increased postoperative pain, delayed wound healing, increased physical disability, and decreased quality of life. One effective non-pharmacological intervention to reduce anxiety is Benson relaxation therapy. Objective: This study aimed to determine the effect of benson relaxation therapy on reducing anxiety levels in pre operative. Methods: This study used a case study design involving one preoperative patient with anxiety symptoms in the Teratai Ward of Prof. Dr. Margono Soekarjo Hospital, Purwokerto. Benson relaxation therapy was administered for 3 days, twice daily, with a duration of 15 minutes per session. Anxiety levels were measured using the Zung Self-Rating Anxiety Scale (ZSAS) before and after the intervention. Results: The patient showed a decrease in anxiety score from 55 (moderate anxiety) to 40 (mild anxiety) after receiving Benson relaxation therapy. Subjectively, the patient reported feeling calmer, more accepting, and motivated. Objectively, there was a reduction in heart rate and physical signs of anxiety. Conclusion: Benson relaxation therapy is effective in reducing anxiety levels in preoperative patients. This intervention can be used as a non-pharmacological alternative to support psychological recovery of pre-operative patients.

This study aims to examine the relationship between family support and depression levels among the elderly in Pejuang Village, Bekasi City, through a descriptive-narrative literature review. The review analyzed relevant scientific articles discussing family support, social support, and depression in older adults. Literature was selected based on the suitability of the elderly population, the presence of family or social support variables, and the measurement of depressive symptoms or depression levels. The analysis compared each article’s objectives, research design, respondent characteristics, instruments, findings, and conclusions. The results indicate that most studies found a relationship between family support or social support and depression among the elderly. Adequate family support, including emotional, instrumental, informational, and appraisal support, helps older adults feel cared for, valued, secure, and better able to adapt to the aging process. Preliminary findings at the Elderly Posyandu in Pejuang Village also show variations in family support and depression levels among elderly participants. Conversely, limited family support may increase loneliness, psychological distress, and depressive symptoms. Therefore, family support functions as a protective factor in reducing depression risk among older adults. Strengthening the involvement of families, health workers, and elderly posyandu cadres is necessary as a promotive and preventive strategy to maintain psychological well-being through education, early detection, and sustainable community-based assistance for vulnerable elderly groups living in community and family environments.

Adolescence is a transitional period marked by rapid biological, psychological, and social changes, which often lead to various problems for individuals, particularly at the high school level. This study aims to analyze the role of guidance and counseling services in addressing these issues using a literature review approach. The method employed is a systematic literature review of relevant scientific publications from 2020 to 2026. The data collection process was carried out through the search, selection, and evaluation of literature related to student issues and guidance and counseling services in schools. The research findings indicate that students face various challenges, such as difficulties in learning, low academic ability, academic stress and anxiety, as well as social-emotional issues influenced by internal and external factors. Guidance and counseling services play a role in supporting students to self-reflect, overcome problems, and optimize their potential through preventive, curative, and developmental approaches. The success of these services is also supported by the role of counselors, collaboration with other teachers, and parental participation. However, in practice, there are still a number of obstacles, such as limited human resources, a lack of coordination, and an incomplete understanding of the functions of these services. Therefore, efforts are needed to improve implementation and cooperation so that guidance and counseling services can operate more efficiently.

The limited use of interactive learning media has made it difficult for students to visualize the functions and assembly flow of computer components. This study aims to design and develop an Android-based educational game called “Assemble & Learn” as an interactive medium for computer assembly lessons, specifically for vocational high school students at SMK Negeri 1 Tanjung Jabung Barat. The development process follows the Multimedia Development Life Cycle (MDLC), which includes the stages of concept, design, material collection, assembly, testing, and distribution. The learning content covers several core competencies: KD 3.2/4.2 on computer assembly, KD 3.3/4.3 on assembly testing, KD 3.4/4.4 on BIOS configuration, and KD 3.5/4.5 on operating system installation, with a focus on KD 3.2 and KD 3.5. Research instruments consist of validation questionnaires for subject-matter experts, media experts, and student trials using the System Usability Scale (SUS). Validation results show that the educational game received an average score of 94% from media experts and 100% from subject-matter experts, both categorized as “Highly Feasible.” Meanwhile, student trials indicated strong acceptance, with an average SUS score of 85% (excellent usability). In conclusion, the “Assemble & Learn” educational game offers an innovative solution to boost learning motivation, simplify material visualization, and provide flexible practice opportunities, thereby supporting the achievement of computer assembly competencies in an optimal and effective way.

Digital transformation has brought fundamental changes to the structure and dynamics of modern industrial economics. Technologies such as Artificial Intelligence (AI), the Internet of Things (IoT), and big data not only modify production and distribution processes but also revolutionize marketing strategies and patterns of industrial competition. This study is motivated by the need to understand how digital marketing transformation influences the development of competitive advantage through changes in digital market structure from an industrial economics perspective. In this context, digital marketing functions as a strategic instrument that integrates technology, data, and consumer behavior into market mechanisms. The analysis shows that digitalization creates a network-based market structure characterized by the concentration of economic power in major digital platforms and dominance in data control. This structure affects the intensity of competition, the direction of innovation, and patterns of industry differentiation. Digital marketing transformation enhances efficiency, expands market access, and lowers entry barriers for new players, yet it also creates competitive imbalances due to the dominance of large platforms.Through a digital Structure–Conduct–Performance (SCP) approach, the study finds that market structure acts as an intermediary variable that channels the impact of digitalization on competitive advantage. Digitalization significantly promotes industrial efficiency, innovation, and profitability. Proposed strategic solutions include strengthening digital literacy, developing adaptive regulations, and fostering cross-sector collaboration to create an inclusive, competitive, and sustainable digital industrial ecosystem

This study aims to analyze the strategic management evaluation of the Sundanese Language Subject Teacher Forum (MGMP) in improving teacher performance at public senior high schools in Tasikmalaya City. The study focuses on leadership management, member participation, institutional support, and program relevance to teachers’ professional development needs. This research employed a qualitative descriptive approach. Data were collected through observations, in-depth interviews, and documentation involving MGMP administrators, member teachers, school principals, and supervisors. Data analysis used the Miles and Huberman interactive model, including data reduction, data presentation, and conclusion drawing. The findings revealed that the MGMP management has generally functioned effectively as a professional learning community. Participatory leadership patterns encouraged collaboration among teachers in designing learning tools and solving classroom problems. However, several challenges were identified, including inconsistent program evaluation, limited technological integration, unequal member participation, and insufficient funding support. The study also found that MGMP programs significantly contributed to improving teachers’ pedagogical competence, especially in lesson planning and instructional implementation. Nevertheless, assessment and evaluation competencies still require further strengthening. This study concludes that strategic management, sustainable evaluation, and institutional support are essential in optimizing MGMP functions to improve teacher performance and the quality of Sundanese language learning.