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Deteksi kendaraan di lalu lintas menggunakan Kalman Filter dan Yolo v8
Full text linkThis research discusses the development of a vehicle detection and tracking model for traffic using the YOLO v8 algorithm integrated with a Kalman Filter. The goal of this study is to improve vehicle tracking accuracy in traffic video recordings, with enhanced robustness against occlusions and disturbances. The methodology involves data collection from a vehicle image dataset available on Roboflow, followed by data processing into training, validation, and testing subsets. The model was trained over 30 epochs using Google Colaboratory, achieving a Mean Average Precision (mAP50) of 93%, a precision of 90%, and a recall of 89%. Testing was conducted on traffic footage from the City of Madiun, obtained from the Madiun City Government's CCTV website, demonstrating high detection and tracking performance. Model evaluation results indicate an accuracy of 93%, precision of 96%, recall of 85%, and an F1 score of 90%. The confusion matrix evaluation shows good performance in detecting vehicles, including cars, motorcycles, and trucks, making it a potentially effective solution for traffic monitoring challenges.Penelitian ini membahas pengembangan model deteksi dan pelacakan kendaraan pada lalu lintas menggunakan algoritma YOLO v8 yang terintegrasi dengan Kalman Filter. Tujuan dari penelitian ini adalah untuk meningkatkan akurasi pelacakan kendaraan pada rekaman video lalu lintas, dengan ketahanan yang lebih baik terhadap oklusi dan gangguan. Metode yang digunakan dalam penelitian ini mencakup pengumpulan data dari dataset gambar kendaraan yang tersedia di Roboflow, serta pengolahan data menjadi subset pelatihan, validasi, dan pengujian. Model dilatih selama 30 epoch menggunakan Google Colaboratory, dan mendapat nilai Mean Average Precision (mAP50) mencapai 93%, presisi 90%, dan recall 89%. Pengujian dilakukan menggunakan rekaman CCTV dari lalu lintas di Kota Madiun yang diperoleh dari situs web CCTV Pemkot Madiun, menunjukkan kinerja deteksi dan pelacakan yang tinggi. Hasil evaluasi menunjukkan akurasi sebesar 93%, presisi 96%, recall 85%, dan skor F1 sebesar 90%. Evaluasi menggunakan confusion matrix menunjukkan performa yang baik dalam mendeteksi kendaraan, seperti mobil, sepeda motor, dan truk. Penelitian ini berpotensi menjadi solusi yang efektif dalam mengatasi masalah pemantauan lalu lintas
The influence of crowdedness on brand image and its impact on word of mouth
Full text linkPopularitas yang terjadi pada sebuah restoran dapat menyebabkan keramaian yang tak terhindarkan, seperti yang terjadi pada restoran Mie Gacoan di Kota Malang, di mana tempat tersebut menarik sejumlah besar pengunjung setiap harinya. Situasi ini dapat menimbulkan berbagai dampak negatif seperti antrean yang panjang, waktu tunggu layanan yang lama, dan masalah kesesakan, baik dalam hal kesesakan manusia maupun kesesakan spasial. Kesesakan manusia mengacu pada sesaknya suatu tempat akibat terdapat banyaknya orang, sedangkan kesesakan spasial mengacu pada benda-benda non-manusia yang memenuhi suatu ruangan seperti meja, kursi, dan berbagai dekorasi lainnya. Kondisi ini dapat mempengaruhi citra merek pada suatu restoran, yang pada akhirnya akan memengaruhi komunikasi dari mulut ke mulut yang diinisiasi oleh konsumen. Penelitian ini menggunakan analisis Partial Least Squares-Structural Equation Modeling (PLS-SEM) dengan sampel sebanyak 150 responden. Temuan penelitian ini menunjukkan adanya hubungan positif antara kesesakan manusia dengan citra merek, serta antara kesesakan spasial dengan citra merek. Demikian pula, terdapat korelasi positif antara citra merek dan komunikasi dari mulut ke mulut, yang menunjukkan pengaruh yang signifikan antara hubungan tersebut.The popularity of a restaurant led to unavoidable crowdedness, as seen in the case of Mie Gacoan restaurant in Malang City, where the establishment attracted a large number of visitors daily. This situation resulted in various negative impacts, such as long lines, extended waiting times for service, and issues with crowdedness, both in terms of human crowdedness and spatial crowdedness. Human crowdedness refers to the congestion caused by a large number of people in a space, while spatial crowdedness refers to non-human objects occupying a space such as table, chair, and other decorations. These conditions influenced the brand image of the restaurant which ultimately affecting word-of-mouth communication initiated by consumers. This study used Partial Least Squares-Structural Equation Modeling (PLS-SEM) analysis with a sample size of 150 respondents. The findings of this research showed a positive relationship between human crowdedness and brand image, as well as between spatial crowdedness and brand image. Similarly, there was a positive correlation between brand image and word-of-mouth, indicating a significant influence
A Case Study on The Quantitative Determination of Fluoride in Drinking Water using The Colorimetric Method with UV-Vis Spectrophotometry
Full text linkDrinking water is something that is consumed by the general public every day. One of the contents contained in drinking water is fluoride which can have a negative impact on humans if the level exceeds 1 mg/L. The objective of this study is twofold: firstly, to identify and calculate the concentration of fluoride in bottled drinking water samples, and secondly, to determine the suitability of consuming the samples. An analysis of fluoride levels was conducted on five drinking water samples. This analysis was performed using a UV-Vis spectrophotometer at a wavelength of 570 nm. The reagent used was sodium 1-parasulfophenylazo 20-1,8-dihydroxy-3-6-naphthalene (SPADNS). The test is based on the reaction of fluoride and zirconium, which results in the absorption of colour by the former and the formation of a colourless complex anion by the latter. The observation is made indirectly by observing the reduction of the absorption of the SPADNS-zirconyl acid reagent complex, rather than the absorption of the reagent to which fluoride ions have been added. The measurement results indicate that the five samples exhibit fluoride levels below 1 mg/L, with a range of 0.054 - 0.560 mg/L. In accordance with the standards outlined in SNI 3553:2015 concerning Mineral Water, the analysed drinking water samples are deemed to be in compliance with stipulated parameters. This is due to the fact that the concentration of total dissolved solids in the water samples does not exceed 1.0 milligrams per litre (mg/L)
Pilsbryoconcha exilis: Kajian Tentang Struktur, Komponen dan Nutrisi, serta Pemanfaatannya dalam Pengolahan Pencemaran Air
Full text linkPerairan Indonesia hingga saat ini masih menunjukan adanya pencemaran, walaupun pada tahun 2020 Bappenas telah mengklaim bahwa air bersih nasional akan mencapai 100% pada akhir tahun 2024. Sistem pembuangan limbah dari berbagai sektor ke aliran sungai serta kurangnya kesadaran masyarakat akan pentingnya air bagi kesehatan menjadi tantangan terbesar dalam menghadapi persoalan ini. Upaya pemurnian air menggunakan penyaring telah banyak diteliti dan diterapkan. Salah satu penyaring alami adalah Pilsbryoconcha exilis (kerang kijing). Tujuan penulisan artikel review ini adalah mengkaji lebih dalam mengenai struktur dan morfologi kerang kijing, kandungan nutrisi, serta manfaatnya dalam mengatasi berbagai persoalan lingkungan. Kajian dilakukan dengan mengumpulkan data penelitian selama 10 tahun terakhir dari tahun 2014-2024 pada Google Scholar, Crossref, dan Elsevier. Data yang dikumpulkan sebanyak 54 artikel, yang kemudian dipilah berdasarkan kata kunci. Hasil pengolahan data mendapatkan 55 unsur dan senyawa dalam kerang kijing termasuk logam berat, dan berbeda pada setiap kerang. Hal ini dikarenakan ekosistem akan mempengaruhi pertumbuhan kerang seperti pH, suhu, kadar oksigen, hingga bakteri dan plankton yang menjadi makanan kerang. Pemanfaatan kijing sebagai bahan makanan terus mengalami peningkatan meski kijing telah diklaim mengandung logam berat yang berbahaya bagi konsumen. Penelitian terhadap teknik pengolahan kijing mendapatkan bahwa kandungan logam berat pada kijing akan menurun melalui perebusan pada suhu 100 oC. Disamping itu, pemanfaatan kijing sebagai biofilter, hidroksiapatit, antibakteri, serta antioksidan juga menunjukkan hasil yang menjanjikan. Penelitian lanjutan terhadap manfaat kerang kijing perlu terus dilakukan mengingat, kerang ini berkembang biak dengan baik di hampir seluruh wilayah perairan Indonesia, dan memiliki manfaat-manfaat yang belum dikaji secara mendalam
ANALISIS PENGARUH IPM, PDRB, DAN JUMLAH PENGANGGURAN TERHADAP JUMLAH PENDUDUK MISKIN DI INDONESIA
Full text linkPoverty is an important aspect to achieve the success of national development. One indicatorto measure the level of community welfare is the decline in the number of poor people. Thepurpose of this study is to explain the effect of the variables HDI, GRDP, and the number ofunemployed on the number of poor people in Indonesia. This study uses secondary data obtainedfrom the Central Statistics Agency with the research sample consisting of 34 provinces inIndonesia with the 2015-2019 research period. The analytical tool used in this research isPartial Least Square Regression (PLS). The results of the study show that HDI has a significantnegative effect on the number of poor people, GRDP and unemployment have a positive andsignificant effect on the number of poor people. Simultaneously HDI, GRDP, and unemploymenthave a positive and significant effect. The variable in the model is able to explain the variablenumber of poor people by 96.6 percent
JAVENTOUR: INISIASI PENGEMBANGAN POTENSI DESAWISATA JAWATENGAH TERINTEGRASI UMKM LOKAL DENGAN KONSEP SMART TOURISM GUNA MENYONGSONG SDGS DESA
Full text linkThe concept of smart tourism is a form of technological development in the form of a tourismplatform that integrates tourist destinations with a tourism service ecosystem with the aim ofmaking it easier for tourists to make tourist visits according to their preferences and budget.Therefore, this paper aims to analyze the potential and initiate applications for developingtourist villages and local MSMEs in Central Java with the concept of smart tourism. Thiswriting was carried out using a descriptive analysis method using business model canvas andSWOT analysis tools with the use of secondary data sourced from various literature. The resultsof this paper show that the JAVENTOUR application can be a strategy for developing anintegrated tourism village for local MSMEs with the concept of smart tourism. This applicationoffers main features in the form of tourist and culinary destinations as well as souvenirs whichare expected to make it easier for people to make tourist visits and expand the marketing reachof tourist villages and local MSMEs. The hope to be achieved with this initiative is that thepotential of tourist villages and MSMEs in Central Java can continue to play a role inencouraging the tourism sector and opening up new economic opportunities for all villageresidents in accordance with the eighth point of the Village SDGs goal, namely achievingeconomic growth accompanied by equal distribution of development results
Sustainable investment feasibility and optimization strategies for PLTSA Benowo: A system thinking approach
Full text linkThis study aims to analyze the sustainability of investments and operational optimization strategies for the Benowo Waste-to-Energy Power Plant (PLTSa) in Surabaya using a System Thinking approach through Causal Loop Diagram (CLD) and Cost-Benefit Analysis (CBA). Data were obtained through a mixed-methods approach, combining semi-structured interviews with PT Sumber Organik, the Surabaya Environmental Agency, PT PLN, the National Energy Council, and academic experts in finance, health, waste management, and system thinking. Secondary data, including waste processing capacity, electricity output, tipping fee and electricity sales revenue, and operational costs, were collected from official reports, academic publications, Bappenas, the Ministry of Environment and Forestry, Surabaya Population Agency, and Kominfo Jatim, covering the period 2015–2023 with projections up to 2032. The CLD highlights dynamic interactions among waste quality, public participation, technological efficiency, policy support, and environmental impacts. Financial analysis indicates that PLTSa Benowo is economically feasible, with a Benefit-Cost Ratio (BCR) of 2.58 at design capacity and 1.81 at effective capacity, and a Return on Investment (ROI) of 157.55% and 81.47%, respectively. Sensitivity analysis shows that increases in operational costs and the removal of tipping fees reduce BCR and ROI values. Therefore, cost efficiency, technology upgrading, revenue diversification, and sustainable policy support are needed to maintain the long-term viability of waste-to-energy projects in developing countries.Penelitian ini bertujuan menganalisis keberlanjutan investasi dan strategi optimalisasi operasional PLTSa Benowo di Surabaya dengan pendekatan System Thinking melalui Causal Loop Diagram (CLD) dan Cost-Benefit Analysis (CBA). Data diperoleh melalui mixed methods berupa wawancara semi-terstruktur dengan PT Sumber Organik, Dinas Lingkungan Hidup, PT PLN, Dewan Energi Nasional, serta pakar akademik di bidang keuangan, kesehatan, pengelolaan sampah, dan system thinking. Data sekunder meliputi kapasitas pengolahan sampah, volume listrik, pendapatan tipping fee dan penjualan listrik, serta biaya operasional, diambil dari laporan resmi, publikasi akademik, Bappenas, KLHK, Dinas Kependudukan Surabaya, dan Kominfo Jatim, dengan periode 2015–2023 serta proyeksi hingga 2032. Hasil CLD menunjukkan interaksi dinamis antara kualitas sampah, partisipasi masyarakat, efisiensi teknologi, dukungan kebijakan, dan dampak lingkungan. Analisis finansial menunjukkan PLTSa Benowo layak secara ekonomi, dengan BCR sebesar 2,58 pada kapasitas desain dan 1,81 pada kapasitas efektif, serta ROI sebesar 157,55% dan 81,47%. Analisis sensitivitas menunjukkan kenaikan biaya operasional dan penghapusan tipping fee menurunkan BCR dan ROI. Oleh karena itu, diperlukan efisiensi biaya, peningkatan teknologi, diversifikasi pendapatan, dan dukungan kebijakan berkelanjutan untuk menjaga kelayakan jangka panjang proyek waste-to-energy di negara berkembang
WOMEN MANAGING FOREST: CASE IN GUNUNGKIDUL AND KULON PROGO REGENCIES, YOGYAKARTA SPECAL PROVINCE, INDONESIA
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ABSTRACT
The relationship between women and forests is manifested through women's involvement in maintaining forest ecosystems. The involvement of women in forest management is one of the strategic issues in the Special Region of Yogyakarta Province. This study aims to analyze forest management activities and assess the impact of forest management activities on women. This study used a qualitative descriptive analysis with the framework of Harvard model gender analysis. This study took place in the Special Region of Yogyakarta, and used 2 locations as case studies, namely Beji Village (Gunungkidul Regency) and Hargowilis Village (Kulon Progo Regency). In Gunungkidul Regency, forest management is directed towards conservation activities, while in Kulonprogo Regency it is forest utilization for agricultural activities. The impacts felt by the women (and men) of the Ngudi Lestari Ranger Group are more on ecological and social benefits. Meanwhile, the Mengger Rejo Forest Farmer Group also receives economic benefits that are equally felt by both genders. This study shows that forests in different locations with different geographic and socio-demographic characteristics will result in different management systems. However, both locations of this study show that women have an important role in forest management
WALANG: SERAMNESE WOMEN'S RESILIENCE AMIDST MULTIPLECRISES
Full text linkABSTRAK
Seram, pulau terbesar di Kepulauan Maluku, menghadapi berbagai krisis yang secara khusus berdampak pada perempuan yang tinggal di Teluk Elpaputih. Krisis-krisis ini telah memaksa mereka untuk tinggal di walang (rumah hutan). Pemerintah setempat, khususnya dinas kesehatan, berpendapat bahwa cara hidup seperti ini tidak memenuhi standar hidup layak dan berkontribusi secara signifikan terhadap masalah kesehatan. Mengombinasikan berbagai data, kami menunjukkan bagaimana perempuan Seram mengintegrasikan pengetahuan tradisional tentang hutan dan keterampilan turun-temurun, yang memungkinkan mereka untuk beradaptasi dan bertahan hidup secara mandiri. Oleh karena itu, kami berpendapat bahwa walang merupakan bentuk ketahanan yang tidak boleh dievaluasi sepenuhnya melalui kerangka kerja Barat.ABSTRACT
Seram, the largest island in the Maluku archipelago, is facing multiple crises, particularly affecting women living in Elpaputih Bay. These crises have forced them to live in walang (forest houses). The local government, particularly the health department, argues that this way of life does not provide a decent standard of living and contributes significantly to health problems. By combining different data, we show how Seramese women integrate traditional forest knowledge and hereditary skills, allowing them to adapt and survive independently. Therefore, we argue that walang is a form of resilience that should not be evaluated solely through Western frameworks
FENOMENA KEMISKINAN DAN PERDAGANGAN PASAR GELAP DI PERBATASAN INDONESIA–TIMOR LESTE
Full text linkABSTRACT
This study aims to analyze the economic opportunities and challenges faced by families living along the Indonesia–Democratic Republic of Timor-Leste (RDTL) border, particularly at points of cross-border smuggling and black-market trade. The research employs a qualitative case study approach, with data collected through in-depth interviews involving informants familiar with the economic and social dynamics of the border region. The findings reveal that the persistence of illegal trade reflects the government’s inability to ensure adequate welfare and economic access for border communities. Restrictive regulations have limited local economic activity, prompting many families to engage in clandestine trade as a survival strategy. This study contributes theoretically by interpreting informal border economies as both adaptive mechanisms and acts of resistance against unfavorable state policies. The findings offer valuable insights for developing more inclusive and context-sensitive economic policies in border areas.ABSTRAK
Penelitian ini bertujuan untuk menganalisis peluang dan tantangan ekonomi yang dihadapi keluarga di wilayah perbatasan Indonesia–Republik Demokratik Timor-Leste (RDTL), khususnya di titik-titik penyelundupan pasar gelap. Metode yang digunakan adalah studi kasus dengan pendekatan kualitatif, di mana data diperoleh melalui wawancara mendalam dengan informan yang memahami dinamika ekonomi dan sosial di kawasan perbatasan. Hasil penelitian menunjukkan bahwa maraknya aktivitas perdagangan ilegal mencerminkan ketidakmampuan pemerintah dalam menyediakan kesejahteraan dan akses ekonomi yang memadai bagi masyarakat perbatasan. Regulasi yang dianggap membatasi justru mempersempit ruang ekonomi warga, sehingga banyak keluarga memilih jalur perdagangan tersembunyi sebagai strategi bertahan hidup. Penelitian ini berkontribusi secara teoretis dalam memahami praktik ekonomi informal di wilayah perbatasan sebagai bentuk adaptasi sekaligus perlawanan terhadap kebijakan negara yang tidak berpihak. Temuan ini juga memberikan implikasi penting bagi perumusan kebijakan ekonomi yang lebih inklusif dan kontekstual di kawasan perbatasan