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This study aims to analyze the factors influencing the optimization of green open space (GOS)-based tourism object development at Panatapan Panyabungan Park, Mandailing Natal Regency. This area possesses high ecological and visual potential, yet its management remains suboptimal in terms of facilities, community participation, and institutional support. The study employs a mixed methods approach, combining quantitative methods using multiple linear regression analysis on 150 respondents, and qualitative methods through in-depth interviews with key informants. The results show that simul-taneously, the four independent variables—GOS quality (X1), tourism facilities and infrastructure (X2), community participation (X3), and local government support (X4)—significantly influence the optimization of tourism development (Y). However, partially, only X2 has a significant positive effect, while X1 and X3 have significant negative effects, and X4 has no significant effect. Qualitative findings reveal that the community is not involved in decision-making, and the local government has not demonstrated concrete intervention in managing the area. These findings suggest that the strategy for developing GOS-based tourism objects should emphasize improving basic facilities, establishing participatory governance, and strengthening the structural role of local governments. A collaborative and community-based approach is key to realizing a sustainable tourism area in environmental, social, and economic aspects.

This research is an evaluative study of the old urban area of Kesawan in Medan City, which has been part of the city’s revitalization efforts initiated by the Medan City Government. Kesawan possesses strong historical and colonial architectural character but has undergone functional and visual degradation due to uncontrolled modern urban development. One of the key issues identified is the presence of inactive urban spaces, disconnected from the public realm and lacking social meaning—phenomena recognized in urban theory as lost space. This concept serves as the foundation for evaluating the effectiveness of the revitalization program implemented since 2021. The study employs a qualitative approach using a single-case study method, focusing on Kesawan as a complex urban space. Data were collected through field observations, in-depth interviews with five categories of informants (building owners, visitors, security personnel, street vendors, and architects), and visual documentation. The analysis adopts the theoretical framework of Finding Lost Space by Roger Trancik (1986), which comprises three main approaches: Figure-Ground Theory, Linkage Theory, and Place Theory. These were further elaborated into six evaluative indicators: connectivity, continuity and circulation, enclosure, accessibility, visual orientation, and the meaning and perception of space by the public. The findings indicate that revitalization has brought significant visual improvements and physical enhancements, particularly along the main corridor of Jalan Ahmad Yani I–VII. However, many secondary streets and non-priority areas still exhibit characteristics of lost space, such as disconnected pedestrian paths, underutilized voids, weak spatial integration, and limited social engagement. These conditions suggest that the revitalization outcomes remain uneven and predominantly cosmetic in certain areas. The study recommends integrating spatial and social approaches in future urban revitalization policies to ensure that public space functions can be restored holistically, sustainably, and contextually in line with local identity.

Lau Kawar Lake, a natural tourism area located on the slopes of Mount Sinabung in Karo Regency, North Sumatra, holds significant potential for the development of nature and culture-based tourism. However, the growth in tourist visits has not yet met expectations due to limited accessibility across various dimensions. This study aims to formulate strategies for improving physical, informational, and institutional accessibility in support of sustainable regional development.The research adopts a mixed methods approach, emphasizing primary data collection through field observations, interviews with key stakeholders and village officials, as well as surveys of 60 tourist respondents. Findings reveal that, overall, the three dimensions of accessibility are still rated as "fair," with average scores ranging from 3.28 to 3.36. The main barriers identified include inadequate road infra-structure within the area, lack of dedicated public transportation for tourists, limited official digital promotional content, and weak institutional coordination in area management. A synthesis of the quantitative and qualitative results indicates that the development of Lau Kawar Lake requires an integrative approach that combines spatial planning, community-based governance, and local policy interventions.Based on these findings, several strategic recommendations are proposed: (1) improvement of access roads and landslide-prone areas through Special Allocation Fund (DAK) for infrastructure; (2) provision of dedicated public transportation for tourists with fixed routes and schedules from the nearest city center; (3) installation of directional signs and visual information boards in aesthetically pleasing formats and bilingual language; (4) establishment of a Digital Promotion Team involving local actors and institutions; (5) capacity-building programs for the community in tourism services, home stay management, and culinary entrepreneurship; and (6) formation of a Cross-Sectoral Accessibility Coordination Forum for Lau Kawar Tourism as a medium-term planning and monitoring platform.This study contributes contextually to strengthening the accessibility dimension as a key prerequisite for advancing local tourism destinations towards sustainable, inclusive, and locally grounded development.

Mursala Island is one of the potential coastal tourism areas in Central Tapanuli Regency, known for its natural uniqueness and rich local culture. However, tourism development in this area re-mains unstructured and unsustainable. This study aims to analyze the current conditions, infrastructure readiness, accessibility, community participation, and the level of local socio-cultural resilience toward tourism in order to formulate strategies for sustainable coastal tourism development. A mixed-methods approach was employed, with primary data collected through observation, in-depth interviews, and a questionnaire distributed to 100 respondents.The results show that local socio-cultural resilience is the most strategic variable in supporting tourism interest (mean = 4.06), followed by community participation (3.82), infrastructure readiness (3.61), and accessibility (3.26). Qualitative findings reinforce these results, revealing that while the community actively maintains cultural traditions, they face access barriers and lack participatory institutions. A SWOT analysis led to realistic strategies such as establishing a Local Customary Tourism Unit, developing permanent piers and sea transportation, and drafting a village regulation (Perdes) on culture-based tourism.This study concludes that sustainable coastal tourism development in Mursala Island must be grounded in the strength of local social capital, cultural preservation, and improvements in accessibility and infrastructure. The findings contribute theoretically to strengthening the concept of Community-Based Tourism (CBT) and practically to informing policy direction for locally-based coastal tourism area development.

Land use changes in the watershed (DAS) area of Tebing Tinggi City have increased the risk of flooding and contributed to the development of slum settlements in vulnerable zones. Uncontrolled urbanization and economic pressures have driven residential expansion along riverbanks, forcing communities to live in substandard environmental conditions. This study aims to analyze the integration of watershed land use change management with slum rehabilitation strategies to enhance regional resilience against flood disasters. The research employed a mixed methods approach, combining qualitative phenomenological studies with quantitative descriptive statistical analysis. The findings indicate that collaboration among spatial planning, environmental policy, and community participation is crucial in creating a sustainable and disaster-responsive watershed management model. Strategic recommendations are centered on strengthening cross-sector coordination and implementing policies based on spatial and social data.

Changes in building functions in urban areas have become an inevitable phenomenon, especially in developing cities such as Binjai City. This study aims to analyze the factors influencing building function changes in the area, using a Mixed Methods approach that combines quantitative analysis through multiple linear regression and qualitative documentation based on field observations. Four independent variables were examined: inconsistency with the Spatial Plan (RTRW), accessibility, economic motivation, and law enforcement.The results show that economic motivation and accessibility have a significant influence on building function changes. Meanwhile, the variables of RTRW inconsistency and weak law enforcement did not show statistically significant effects. These findings are supported by visual field evidence indicating a massive conversion of building functions without effective spatial planning control. Photographic documentation reveals a tendency among the community to adapt building functions for economic activities in strategically accessible areas.The study concludes that building function changes in Binjai City are driven by economic needs and urban spatial dynamics that are not matched by supervision and enforcement of spatial planning regulations. Recommendations include strengthening spatial supervision, providing socio-economic-based incentives, simplifying permit processes, and implementing community-based public education. This research offers valuable contributions to adaptive urban planning while upholding the principles of spatial order and community aspirations.

The Community-Based Sanitation Program (PAMSIMAS) is a government initiative aimed at improving community access to proper sanitation facilities, particularly in rural areas. This study aims to evaluate the effectiveness of the program in Tanjung Aman Village, Wampu District, Langkat Regency. A qualitative approach was used with a phenomenological method, focusing on the experiences and perceptions of local residents and village officials regarding program implementation. Data were collected through in-depth interviews, field observations, and documentation, involving 15 informants comprising residents, sanitation cadres, and village officials. The findings show that technically, the sanitation facilities function well; however, sustainability in usage faces challenges such as low community participation, weak maintenance systems, and the absence of binding local regulations. Community perception of the program is generally positive, particularly regarding improvements in environmental cleanliness and comfort in using the facilities, yet unequal access remains a significant issue. The study concludes that the success of PAMSIMAS largely depends on collaboration among the community, local cadres, and village policies. Strategic recommendations include the formulation of Village Regulations, regular training for cadres, and the establishment of a community-based sanitation management institution. With this approach, the program is expected to operate sustainably and provide long-term benefits to rural communities.

Sustainable management of coastal spaces is a major challenge in urban-coastal planning, especially in vulnerable areas such as Medan Belawan. This study aims to identify and analyze the influence of six independent variables on the sustainability of coastal space management. The variables studied included Microecological Inequality, Inclusivity of Coastal Asset Ownership, Adaptive Preparedness to Climate Risks, Inter-Functional Spatial Connectivity, Local Institutional Accountability, and Communal Social Resilience. The method used is a quantitative approach with a multiple linear regression model on primary data obtained through surveys, field observations, and in-depth interviews with 150 respondents.The results showed that five of the six variables had a significant effect on the sustainability of coastal space management. The most dominant variable was Local Institutional Accountability, followed by Asset Inclusivity, Ecological Inequality, Social Resilience, and Adaptive Readiness. Meanwhile, Connectivity between Spatial Functions does not have a significant impact. The regression model shows an R² value of 0.539 which means that 53.9% of the variation in coastal space management can be explained by these six variables.These findings imply the importance of strengthening participatory governance, equitable distribution of space access, and building community's adaptive capacity as a cornerstone for contextual and sustainable coastal spatial planning. Strategic recommendations are directed at institutional reform, community-based planning, and micro-ecological conservation in urban-coastal areas.

Tourism is a sector strategy in encouraging regional economic growth, cultural preservation, and improving community welfare. Binjai City, as one of the buffer areas of Medan Metropolitan, has a number of areas that have the potential to be developed into leading tourist destinations. However, un-til now there has been no directed and integrated development strategy for areas that have this potential.This research aims to identify and analyze the potential for the development of leading tourist areas in Binjai City through the Mixed Methods approach, which is a combination of qualitative and quantitative methods. The focus of the study is directed at three strategic areas, namely Taman Merdeka Binjai, the Binjai Grand Mosque Area, and the Jalan Veteran Culinary Village, which have strong historical, so-cio-cultural, and local economic potential but have not been optimally exploited.Data was collected through a survey of 150 respondents consisting of tourists, MSME actors, local communities, and government officials, as well as in-depth interviews with 12 key informants. The re-sults of the quantitative analysis showed that the attractiveness of the area and community support re-ceived the highest score in respondents' perception, while infrastructure and the use of digital technolo-gy are aspects that still require special attention. Qualitative analysis supports these findings, where vari-ous technical and institutional constraints are still found that hinder sustainable development.The results of data integration show that the potential for the development of leading tourist areas in Binjai City is quite high in terms of location, cultural value, and support from the local community. However, to realize a competitive region, strategic interventions are needed in the form of improving the quality of infrastructure, digitizing promotions, and collaboration between sectors. Policy recommenda-tions are filled with institutional capacity strengthening, community empowerment, and the establish-ment of tourism development programs based on local and sustainable potential.

Slum settlements developing around Final Disposal Sites (TPA) represent a complex phenomenon that affects the quality of the urban living environment. In Karo Regency, the proximity of the TPA to residential areas has raised various issues such as air pollution, declining sanitation quality, and limited community participation in spatial planning processes. This study aims to analyze the influence of Distance to the TPA (X1), Length of Residence (X2), Community Participation (X3), Perception of TPA Impact (X4), and Household Income (X5) on the Quality of Slum Settlements (Y). A quantitative approach was applied using a multiple linear regression model, based on primary data from 200 respondents residing in areas affected by the TPA. The analysis revealed that, simultaneously, the four independent variables (X1–X4) significantly influence settlement quality, whereas household income does not show a significant effect. Partially, Distance to the TPA and Length of Residence have negative effects, while Perception of TPA Impact has a positive effect. Interestingly, Community Participation shows a negative influence, indicating ineffective engagement in environmental management. The R² value of 0.016 suggests that the model explains only a small portion of the variation, yet the F-test significance supports the overall model's relevance. Recommendations from this study include the importance of establishing a minimum 300-meter buffer zone between the TPA and residential areas, implementing sanitary landfill methods to replace open dumping systems, forming environmentally-based community forums with advocacy strength, and conducting community-based waste management training focusing on high-risk households. Strengthening participatory approaches through integration into village and sub-district spatial planning is essential for managing environmental impacts collaboratively and sustainably.

The existence of Final Waste Processing Sites (TPA) in urban areas often presents a dilemma between the need for waste management infrastructure and its environmental and social impacts on surrounding communities. This study aims to examine the impact of the TPA Terjun in Medan City on patterns of land use change and the socioeconomic conditions of nearby residents. The method used is quantitative, involving a survey of 150 respondents, and multiple linear regression analysis to test the influence of two independent variables namely, the characteristics of the TPA and public perception and response on community perceptions of environmental impacts. The results indicate that both independent variables have a significant simultaneous effect on public perception, with a model significance value of 0.022. Partially, the physical characteristics of the TPA have a significantly positive influence, while community perceptions and responses also contribute meaningfully. However, the low coefficient of determination (R² = 0.009) suggests that many other factors outside the model also influence perceptions of environmental impact. This study highlights the importance of a holistic approach in spatial planning and urban environmental management, particularly in relation to public facilities such as TPAs. Community participation, infrastructure quality, and zoning certainty are crucial factors in maintaining the balance between the functional needs of the city and the desired quality of the microenvironment.

Slums are one of the biggest challenges in sustainable urban development. In the midst of the government's efforts to run a program to handle slum organizations, the issue of miscarriage after physical intervention often goes unnoticed. This study aims to stop the slum management program in Tegal Sari Mandala II Village, with a Mixed Methods approach that combines linear multiple quantitative regression analysis and a qualitative descriptive approach.The results show that community participation has a significant effect on poverty programs, while infra-structure quality has not shown a statistically strong relationship. Qualitative findings support these results, where residents feel more attached to the programs they have followed in the past. Meanwhile, a number of infrastructures that are not in accordance with needs are considered less effective in supporting sustainability. This study concludes that the desire of the program is not only determined by technical aspects, but also by social, institutional, and cultural factors that are intertwined. Strategic recommendations include strengthening participation, improving design based on local needs, and integration with spatial policies.

This study focuses on the development and implementation of “Pasar Kita,” a web-based marketplace system designed to facilitate digital transactions for traditional market sellers and consumers. The system was developed using PHP as the backend programming language and MySQL as the database management system. The purpose of this project is to address the digital gap experienced by traditional market vendors who have limited access to modern e-commerce platforms. The research includes a needs analysis, system design using UML diagrams, implementation of main features such as registration, login, product management, transactions, checkout, and order tracking, followed by system testing. The results show that all major functions operate properly, including user authentication, product uploads, order processing, and payment simulations via transfer or cash-on-delivery (COD). System testing indicates that the platform meets usability, functional, and responsiveness criteria. The findings highlight the system’s capability to support local economic digitalization by providing an accessible and user-friendly marketplace for traditional market vendors and consumers.

Rapid technological developments have penetrated various aspects of human life, including data and information security. Amidst the threat of data leaks and misuse, information protection has become crucial. One solution to maintain data confidentiality is to implement cryptography technology. Cryptography is the study of techniques to secure messages so they cannot be read by unauthorized parties. This process is carried out by encoding the original message (plain text) into an unreadable form (cipher text), which can only be understood by those who possess the key to decrypt it. This study used the Caesar Cipher algorithm, a form of classical cryptography. This algorithm uses a substitution method, where each letter in the message is shifted by a certain amount based on a predetermined key. Caesar Cipher is a symmetric algorithm, meaning the key used for encryption is also used for decryption. The security of this algorithm lies in the secrecy of the key, which is known only to the sender and recipient of the message. This method is relatively simple, but still relevant for securing data with low to medium sensitivity levels. This study used WhatsApp messages as the object to be encrypted using the Caesar Cipher algorithm. The results show that encrypted messages become unintelligible without prior decryption. This demonstrates that the Caesar Cipher can protect messages from unauthorized parties. Therefore, implementing this algorithm can be an initial solution for maintaining data confidentiality in digital communications, especially on platforms vulnerable to eavesdropping or unauthorized access. Its primary benefit is maintaining message integrity and confidentiality to prevent misuse.  

Growth rapid computing cloud, especially on academic, government, and service platforms. public, has trigger improvement frequency and complexity Distributed Denial of Service (DDoS) attacks. Intelligent DDoS attacks AI based capable copy pattern Then cross user valid, so that difficult detected and mitigated. The majority approach mitigation moment This nature reactive, no scalable, and tends to sacrifice availability service for authorized users. Research​ This aiming develop architecture proactive and adaptive defense​ For ensure continuity service during attack ongoing. Security model proposed hybrid​ integrating Zero Trust Architecture (ZTA), adaptive bandwidth control, and isolation service container -based. Architecture consists of from three layer Main: (1) ZTA Policy Engine which performs verification identity and assessment behavior through tokens and policies intelligent; (2) Adaptive Bandwidth Load Balancer which automatically dynamic separate and arrange Then cross based on reputation and level trust ; and (3) Containerized Service Cluster which groups request to in different containers For user trusted and not known . Components addition such as blockchain -based smart contracts are used For recording request and verification access , as well as lightweight AI module used for profiling then cross in real-time. Simulation results show that this model succeed increase availability service for user trusted during attack , press false positive rate , as well as optimize allocation source power. Integration of zero trust policies with intelligence Then cross and segmentation service in real-time forming framework effective and scalable defense​ to modern DDoS threats . In conclusion , the study This contributes a robust , adaptive , and modular architectural model for maintain continuity cloud services in condition network at risk .

This study aims to explore the perspective of Physical Education, Sports, and Health (PJOK) teachers and classroom teachers regarding the form and effectiveness of cooperation in the implementation of the Pancasila Student Profile Strengthening Project (P5) with the topic of Sustainable Lifestyle at Pajajaran State Elementary School. The implementation of the Independent Curriculum emphasizes the importance of collaborative, comprehensive, and contextual learning, where synergy between teachers is the main foundation for the success of thematic projects. This collaboration is essential to ensure that learning not only develops cognitive aspects, but also forms character and environmental awareness in students. The research method used is a qualitative approach with data collection techniques through semi-structured interviews, direct observation during the learning process, and document analysis such as learning implementation plans and P5 project reports. The data was analyzed with the stages of data reduction, data presentation, and conclusion drawing to obtain a comprehensive picture of the teacher's collaboration strategy. PJOK teachers play a role in field practice, such as teaching physical activities that prioritize the principles of sustainability and healthy living habits. Meanwhile, classroom teachers emphasized strengthening conceptual material on sustainability through discussions, literacy, and creative projects. The results of the study show that the synergy between PJOK teachers and classroom teachers creates more effective and meaningful learning. Challenges that arise include limited time for coordination, differences in teaching styles, and lack of a comprehensive understanding of sustainability concepts. However, motivation, commitment, and good communication are key factors to overcome these obstacles. This research emphasizes that teacher collaboration is crucial in supporting the successful implementation of the Independent Curriculum, while instilling the values of environmental care, independence, and social responsibility in students.

This study was conducted with the aim of determining the extent to which leg power training through the box jump method influences the increase in volleyball smash jump height in extracurricular participants at SMK Negeri 1 Kuningan. Volleyball requires good physical abilities, especially explosive leg muscle power, because this skill plays a very important role in performing the smash movement as the main form of attack. One form of training that is believed to be able to increase explosive power is box jump training, which is a type of plyometric training that emphasizes repeated jumping movements with high intensity. The research method used was an experiment with a one group pretest-posttest design. The study involved a sample group consisting of 15 students, taken using a total sampling technique from all volleyball extracurricular members. The data collection instrument used the vertical jump smash test according to Ali Maksum. The test was conducted in two stages, namely before treatment (pretest) and after treatment (posttest). The results of data analysis showed a significant increase after being given treatment in the form of box jump training. This is evidenced by a significance value (p) of 0.000 which is smaller than 0.05, so it can be concluded that there is a real difference between the pretest and posttest results. In other words, box jump training has been shown to be effective in increasing smash height. These findings indicate that training programs designed to incorporate plyometric elements, particularly box jumps, can optimally develop leg muscle explosive power. Therefore, this study recommends that coaches and sports teachers incorporate box jumps as a primary training component in volleyball skills development programs, significantly improving players' offensive performance.

This study aims to determine the extent to which mental ability influences volleyball underhand passing skills and strategies for improving them in seventh-grade students at MTs SA Atholibiyah Bumijawa. The mental abilities studied included learning motivation, concentration, and self-confidence, as all three are considered important factors in supporting sports performance. The study used an experimental survey method with a correlation approach. The sample was determined through a purposive sampling technique, meaning only students who were actively involved in volleyball learning were included as respondents. The research instruments included a questionnaire to measure students' mental ability levels and an observation sheet to assess underhand passing skill practice. Data analysis was conducted using a correlation test to identify the relationship between mental ability and underhand passing skills, and regression analysis to measure the magnitude of the effect. The results showed a significant effect of mental ability on underhand passing skills. Students with high learning motivation tend to be more enthusiastic and consistent in practicing. Good concentration enables students to control movements, maintain balance, and manage timing when passing. In addition, strong self-confidence encourages students' courage in making decisions and reduces technical errors. This results in passing skills with more accuracy, control, and optimal timing. Improving strategies that can be implemented include structured training with the use of assistive devices to enhance technique, providing motivation and positive feedback from teachers to maintain enthusiasm, and focused training such as game simulations to strengthen concentration. The findings of this study confirm that mental development plays a crucial role in learning sports skills, particularly volleyball, thereby improving both the quality of learning and student achievement.

This study aims to describe the role of parents in supporting the achievements of sepak takraw athletes in Batang Regency. Athlete achievement is determined not only by individual abilities and training received, but also by support from their immediate environment, particularly family. In this context, parents play a strategic role in the coaching and development of young athletes, both physically, mentally, and emotionally. This study used a qualitative approach with data collection techniques such as in-depth interviews, direct observation, and documentation. The subjects in this study consisted of parents of sepak takraw athletes, athletes who have achieved success at the regional level, and coaches involved in coaching. Through this approach, comprehensive data was obtained regarding the forms of support provided by parents. The results show that parents play a crucial role in encouraging athlete success. This role is manifested through various forms of support, including moral support in the form of motivation and encouragement, material support such as providing training equipment and transportation costs, and direct involvement in monitoring children's development. Parents also actively communicate and collaborate with coaches and clubs to create a conducive coaching environment. In addition, parents' positive attitudes in appreciating their children's interests and talents contribute to the athletes' high level of self-confidence and commitment. Thus, active parental involvement has been shown to significantly contribute to improving the performance of sepak takraw athletes, particularly at the district level. This research suggests the need for systematic parental involvement in regional sports development programs.  

This research explores the effectiveness of heuristic techniques for solving combinatorial optimization problems, with a particular focus on the Traveling Salesman Problem (TSP). Combinatorial optimization is a critical area of study, especially in fields like computer science, engineering, and economics, where finding optimal solutions from a finite set of possibilities is crucial. However, the NP-hard nature of many combinatorial problems, such as the TSP, makes traditional exact methods like Branch-and-Bound and Dynamic Programming computationally expensive and inefficient for larger problem sizes. The primary objective of this research is to evaluate the performance of heuristic methods, including Simulated Annealing (SA), Genetic Algorithms (GA), and Iterative Computation techniques, such as Tabu Search (TS) and Particle Swarm Optimization (PSO). These methods are tested for their ability to provide approximate solutions efficiently. The findings reveal that while ACO provided the best solution quality, it had the longest runtime. TS was the fastest, though with slightly lower solution quality. SA and GA demonstrated a balance between solution quality and computational efficiency, but their performance heavily depended on parameter tuning. The hybridization of SA and GA showed potential for improving solution quality but introduced additional complexity. The research concludes that heuristic methods, especially when combined, offer viable solutions for large-scale combinatorial optimization problems, though the trade-off between solution quality and computational time must be considered when selecting an algorithm.