Camshaft lift is an important parameter that determines the height of the valve lift, calculated from the valve position when it is completely closed to the fully open position. This component plays a crucial role in regulating the flow of the air and fuel mixture into the combustion chamber. This study aims to improve the performance of a 200cc 4-stroke motorcycle engine through camshaft lift modification, which is expected to affect the characteristics of engine torque and power. Modifications were carried out by designing two types of modified camshafts, namely series A and series B, as a comparison to the standard camshaft. The research method used is experimental testing using a dynamometer to measure engine torque and power at various speeds, ranging from 4,000 to 10,000 RPM. The data obtained were analyzed to determine the effect of each type of camshaft on engine performance. The test results show that the B series camshaft provides the most significant performance improvement compared to the standard and A series camshafts. At 7,500 RPM, the standard camshaft produces an average torque of 19.2 Nm, the A series camshaft 19.6 Nm, while the B series camshaft reaches 21.2 Nm. Meanwhile, at 10,000 RPM, the average power of the standard camshaft is recorded at 22.2 HP, the A series camshaft 24.1 HP, and the B series camshaft reaches 26.3 HP. This increase indicates that the camshaft lift modification is able to optimize the duration and height of the valve opening, so that the supply of the fuel and air mixture to the combustion chamber becomes more efficient. Thus, camshaft modification, especially the B series, is an effective and applicable solution in increasing the performance output of a 200cc motorcycle engine without having to make major changes to the overall engine structure.

This study aims to examine the influence of electronic word of mouth (e-WOM) specifically its quality, quantity, and credibility on purchase intention, with brand awareness as a mediating variable for Mixue products in Jember Regency. The research employed a quantitative explanatory method using purposive sampling involving 160 respondents. The findings indicate that e-WOM quality, quantity, and credibility significantly influence purchase intention. However, only e-WOM credibility has a significant impact on brand awareness and is proven to mediate the relationship between e-WOM credibility and purchase intention. In contrast, e-WOM quality and quantity do not significantly affect brand awareness, and thus brand awareness does not mediate their relationship with purchase intention. These findings highlight the importance of information credibility in building brand awareness and enhancing consumers' purchase intention.

This study investigates the influence of service quality, trust, and commitment on member loyalty in Women’s Cooperatives in Jember Regency, Indonesia. Amid increasing competition from financial institutions and a declining number of active cooperatives, member loyalty has become a critical factor for sustainability. Drawing upon the Key Mediating Variable (KMV) model and relationship marketing theory, this research highlights how service quality and trust shape long-term cooperative-member relationships. The study also explores the unique role of commitment in fostering member retention in a cooperative context driven by social empowerment and collective welfare. Findings from previous literature underscore the positive and significant effects of service quality and trust on loyalty, while commitment shows varied influence. The paper emphasizes the necessity for cooperatives to maintain high service standards and build strong emotional ties with members. This approach is essential for sustaining member engagement and positioning women’s cooperatives as agents of local economic development and female empowerment.

Utilization of computer vision can be applied in various aspects of daily life, reducing dependence on human labor. One of its implementations is in industry, such as in the production process of motorized vehicles, to sort or classify parts or goods. The computer vision process involves many stages, such as image capture, image processing, image analysis, image recognition, and decision-making. In the automotive industry, computer vision has been used in autonomous or driverless electric vehicles, as well as in creating intelligent transportation systems. To detect objects in real-time, one of the options that can be used is to use the YOLO algorithm, which can detect objects in one stage with predictions of bounding boxes and class probabilities simultaneously. However, although YOLO has good performance, the architecture has some drawbacks, such as complexity and complicated hyperparameter congurations. To remedy this, the Adam optimization algorithm was introduced, which combines the momentum and RMSprop algorithms to adjust the learning rate adaptively and provide faster convergence in model training. This is evidenced by an increase in the value of mAP on Yolov5. These results prove that the Yolov5 method with Adam`s optimization is better than the Yolov5 method without optimization.

The social welfare institution known as LPKS plays a crucial role in providing protection and guidance to children, though its implementation remains suboptimal. This discussion focuses on the LPKS strategy in shaping the social behavior of children with legal issues and the factors hindering its effectiveness. This research employs a qualitative descriptive method with a phenomenological approach, involving direct field observations, interviews, and documentation. The findings regarding the LPKS strategy in shaping the social behavior of children with legal problems include several aspects. Firstly, there is a normative role. Secondly, LPKS performs a practical role by addressing various needs such as mentoring, psychological therapy, spiritual or religious therapy, arts training activities, and legal protection throughout the legal process. Additionally, it provides educational guidance focusing on the developmental and mental aspects of children. Finally, the ideal role is to enhance LPKS performance. The primary inhibiting factor affecting the LPKS strategy in shaping the social behavior of children with legal problems is budget limitations. These limitations arise due to the substantial budget required to cover a large area, while existing resources remain insufficient.

Penyakit diare merupakan penyakit endemis di Indonesia dan juga merupakan penyakit potensial KLB yang sering disertai dengan kematian. Penelitian ini bertujuan untuk mengetahui pengaruh sumber air bersih, perilaku cuci tangan pakai sabun dan penggunaan jamban sehat. Desain penelitian ini adalah penelitian analitik observasional dengan menggunakan pendekatan cross sectional. Populasi dalam penelitian ini adalah kepala keluarga di Lingkungan Kampung Sumbawa Kelurahan Tanjung Kecamatan Rasanae Barat Kota Bima yang berjumlah 673 KK. Sampel dalam penelitian ini 249 KK yang diperoleh dengan menggunakan teknik simple random sampling dan di analisis dengan menggunakan uji regresi logistik berganda. Hasil penelitian ini semua variabel penelitian ini bermakna, yaitu: sumber air bersih berpengaruh terhadap kejadian diare (p value = 0,000 < 0,05), perilaku cuci tangan pakai sabun berpengaruh terhadap kejadian diare (p value = 0,000 < 0,05) dan penggunaan jamban sehat berpengaruh terhadap kejadian diare (p value = 0,002 < 0,05). Kesimpulan dalam penelitian ini: 1) Ada pengaruh sumber air bersih. 2) ada pengaruh perilaku cuci tangan pakai sabun. 3) penggunaan jamban sehat. Disarankan:  1) Bagi dinas kesehatan agar membuat kebijakan tentang PHBS dan menyediakan alat penyerap kadar air yang bernama Water Softener. 2) Bagi puskesmas agar lebih meningkatkan penyuluhan tentang PHBS. 3) Bagi kelurahan agar membuat program kesehatan tentang PHBS dan mengajukan ke dinas kesehatan. 4) Bagi masyarakat agar mau menerapkan PHBS untuk mencegah terjadinya penyakit, terutama penyakit diare. 5) Bagi Peneliti lain perlu adanya penelitian lebih lanjut dengan desain penelitian dan variabel yang berbeda untuk mengetahui faktor lain yang berpengaruh terhadap kejadian diare