UMA - Open Access Journals (Universitas Medan Area)
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Improving the Accuracy of Coffee Leaf Disease Detection Using Squeezenet and Simam
Get PDFEarly detection of coffee leaf diseases such as leaf rust and Phoma is essential due to its direct impact on crop productivity and quality. Recent studies have shown that lightweight CNN architectures like SqueezeNet are effective for deployment on resource-constrained devices, though they still face limitations in classification accuracy for complex disease types. This study aims to improve the accuracy of coffee leaf disease classification by integrating the SqueezeNet architecture with the SimAM attention module, which enhances feature representation without significantly increasing model complexity. A quantitative experimental approach was used, employing an open-source dataset of coffee leaf images that was augmented and categorized into three classes: healthy leaves, leaf rust, and Phoma. The models were evaluated using accuracy, precision, recall, and F1-score metrics. Results show that integrating SimAM into SqueezeNet increased the model’s accuracy from 81% to 84%. The most significant improvements were observed in the leaf rust and Phoma classes, with F1-scores rising from 0.70 to 0.79 and from 0.73 to 0.76, respectively. Additionally, the AUC score improved to 0.91. These results demonstrate that SimAM integration effectively enhances classification performance, though challenges remain in distinguishing classes with visually similar features. Further research is recommended to implement more aggressive data augmentation and regularization techniques to improve model generalization
Comparison of Support Vector Machine (SVM) and Naïve Bayes Algorithm Performance in Analyzing Garuda Bird Design Sentiment in IKN
Get PDFThe Government's policy in moving the Indonesian Capital City (IKN) is considered controversial, this has given rise to various responses from the public, especially on social media X. This research aims to analyze tweet sentiment related to IKN and compare the two algorithms. In this experiment, we succeeded in collecting 5128 tweet data regarding IKN in the X application, the total amount of IKN data was classified into positive sentiment as 2598 1659 negative data and sentiments. Research objectives, methods used, main results, and implications. This research aims to measure public sentiment towards the design of the Garuda bird as the main symbol of the Indonesian Capital City (IKN) by using a comparison of the performance of the Support Vector Machine (SVM) and Naïve Bayes algorithms in analyzing the sentiment of the Garuda bird design in the IKN. main results, for example: the proportion of positive, negative and neutral sentiment, as well as the factors that most influence sentiment. Implications of research results for government, designers and society
Modification of Nyamplung Seed Peeling Machine Transmission
Get PDFDesign of a nyamplung seed peeling machine with a 0.5 HP electric motor drive source with 1400 rpm rotation using a Ø76 mm pulley transmission system with a 1:1 ratio with a v-belt type A-24. After testing, it was found that from 100% of the nyamplung seeds there were seeds that were crushed and their contents were not processed, as many as 55% of the nyamplung seeds were found, apart from that when the machine was run there were seeds that were thrown out of the hopper so that the results of the machine design were deemed not to be as expected. To overcome this problem, it is necessary to modify the previous research machine so that the peeling process between the seeds and the nyamplung shell can improve the quality. The results of the modification of the nyamplung seed peeler tool were obtained with a duration of 13 seconds, the number of nyamplung seeds was 25 pcs, of which 17 were peeled. There were 5 pcs of whatever were not peeled, and 3 pcs were crushed. The second trial had a duration of 14 seconds, the number of seeds sampled was 25, 18 were peeled, the remaining 4 were not peeled and 3 were crushed. The third trial lasted 15 seconds out of a total of 25 pieces peeled, the result was 19 pieces peeled and the remaining 2 pieces failed, 4 pieces were destroye
Digitalisasi Layanan Pertanahan di Badan Pertanahan Nasional Kota Surabaya dalam Upaya Mencegah Mafia Tanah
Get PDFThis study aims to analyze efforts to digitize land services in overcoming land mafia practices in the city of Surabaya, with a focus on the implementation of a technology-based land information system. The research method used is normative juridical with a statute approach and a historical approach. The statutory approach is used to examine various regulations governing the digitization of land services in Indonesia such as the Agrarian Law and its implementing regulations. The results found that digitization is considered a solution to increase transparency, accountability, and efficiency of land services, which are expected to reduce the opportunity for data manipulation or fraud. The implementation of an electronic land registration system (e-land registry) and online application-based services in the city of Surabaya provides easy access to information for the public and accelerates the land administration process. Some challenges such as the lack of digital literacy among the public and limited technological infrastructure. so that collaborative efforts between the government, the community and the private sector to continue to develop a more inclusive and effective digital system to overcome land mafia in the future
Penerapan Arsitektur Tropis pada Bangunan Shopping Center di Kota Lubuk Pakam, Kabupaten Deli Serdang
Get PDFShopping centers are centers of exchange and distribution of goods and services that play an important role in the economic development of a region. This author highlights the role and impact of modern shopping center development on urban development, with a focus on the city of Lubuk Pakam, Deli Serdang Regency, North Sumatra. Currently, the city has only one shopping center, Delimas Plaza, which is inadequate to meet the needs of the local community. By considering these conditions, this author proposes the construction of a Shopping Center in Lubuk Pakam by applying a tropical architecture theme. This theme was chosen because it can accommodate the tropical climate and weather in Indonesia. The design of the Shopping Center building is designed with attention to natural lighting and optimal air output. The development of Shopping Center in Lubuk Pakam is expected to have a positive impact on the development of the local economy, such as employment and increased tax revenue. In addition, with a more modern and complete shopping center, it is expected that the local community will no longer need to go to downtown Medan to shop, thus enabling better local economic development and growth
Kajian Penataan Massa Terhadap Aksesibilitas Pengguna Jakabaring Sport City
Get PDFJakabaring Sport City (JSC), or the Jakabaring Sports Complex, is one of the largest sports complexes in Indonesia, located in Palembang City. JSC is equipped with a comprehensive range of facilities, both for sports and non-sports activities. These facilities are spread across an area of 325 hectares, with the Gelora Sriwijaya Stadium serving as the central focus of the mass arrangement. As a public building, JSC is frequently visited, especially during events held at the complex. Therefore, this study aims to assess the effectiveness of the mass arrangement in relation to user accessibility. The research employs a qualitative method through literature review. Data collection techniques involve searching for data, conducting research, and drawing conclusions. The study findings indicate that the mass arrangement at JSC also considers user activities, which affects accessibility and circulation. The mass arrangement at JSC is deemed sufficiently efficient for the various activities carried out by its users
Penerapan Arsitektur Vernakular pada Redesain Terminal Bus Tipe B Kota Tanjung Balai
Get PDFTanjung Balai bus terminal has experienced a decline in function due to inadequate facilities, causing many bus companies to cease operations there. This situation, combined with the presence of illegal terminals that create congestion and lack comfort, has driven the redesign of the terminal into a Type B terminal that meets standards. The research employs a qualitative descriptive method, including site analysis, literature review, and field surveys to identify negative environmental impacts. The redesign aims to restore the terminal's function by applying neo-vernacular Malay architecture, creating comfortable facilities, and supporting infrastructure development. This project is expected to improve transportation quality, enhance public spaces, and provide benefits to the surrounding community
Optimalisasi Desain Atrium dan Façade Melalui Analisis Evakuasi Kebakaran dan Konsumsi Energi
Get PDFConsideration of the use of the atrium and efforts to reduce room cooling energy were taken into consideration in the design process for the building for the faculty of technology and the department of civil engineering – UAJY. The performance study was carried out using a literature study and simulation approach to be taken into consideration in making design decisions. The atrium design study was carried out on two options, namely designs without and using an atrium. The study was conducted to see the role of the use of the atrium in optimizing natural lighting and fire smoke removal. Façade studies were carried out on four design options to see the performance of each option. Maximum use of the atrium has a positive impact on room lighting and room heat dissipation. The use of a sloping roof on the side where the wind comes from has a positive impact on the efforts to dissipate heat and smoke in the room. The use of a rectangular atrium also functions better in exhausting smoke compared to a box-shaped atrium. Four shading design models have been tested on building façade designs. These four models have a positive impact on reducing space cooling loads. However, a model with minimum performance was chosen, namely a combination of conventional shading with external horizontal blinds, but it is more efficient in terms of the use of materials, costs and building structure, and looks lighter visually
Pola Pemukimamn Kumuh Pada Pinggiran Bantara Rel Kereta Api Di Jl. Ampera Raya, Kec. Medan Timur, Kota Medan
Get PDFThis study examines settlement patterns are places where humans live and carry out daily activities. The form of population distribution can be seen based on natural conditions and populations activities. According to wicaksosno (2010), a slum settlement pattern is a settlement where it is no longer possible to achieve a decent life for its residents. Jalan ampera raya, medan city, is one of the slum areas in the city of medan. This area is an area near the railroad tracks. The aim of the research is to look at the pattern of slum settlements on the outskirts of the railroad tracks. The research method was carried out using descriptive quantitative qualitative methods using field observations, interviews and questionnaires. According to the research results, the pattern of slum settlements in the area tends to be linear, following railway lines, and has the characteristics of denses buildings around centers of economic and educational activity. The level of security, ability to access public facilities, and waste management are some of the aspects affected by this condition. All these aspects attract the attention of local residents
ECO HIVE: Implementasi Konsep Arsitektur Hijau di Youth Public Space dengan Pendekatan Iklim
Get PDFMedan City has an urgency for public spaces that are not only functional but also sustainable. This research aims to design a Youth Public Space by applying the principles of Green Architecture through the working with climate approach. The research methods used include literature study, field observation, user questionnaire, and SWOT analysis of the selected site on Dr. Mansyur Street, Medan City. The analysis focused on space requirements, local climate conditions, site potential, and the application of sustainable features such as rainwater conservation, optimization of cross ventilation, and the use of secondary skin for energy efficiency. The results of the analysis show that the use of hexagonal shapes in the plan can improve air circulation and natural lighting, while the southward orientation of the building and the rainwater harvesting system effectively support resource conservation. The design concept also involves a participatory approach, taking into account the preferences and needs of local youth. In conclusion, the designed Youth Public Space not only serves as a platform for social, creative, and educational activities, but also as a representation of Medan City's commitment to sustainable development, hoping to encourage innovation, collaboration, and environmental awareness among the younger generation