The objectives of this study are: (1) To analyze the extent to which the effectiveness of online business contributes to increasing sales turnover, and to analyze the factors that influence the success of online business strategies in increasing company profits. (2) To optimize market reach through appropriate digital marketing strategies. (3) To create added value or unique products to compete in the market. (4) Increase sales through a variety of products that suit market needs.The type of research that the author uses in this study is field research where to obtain accurate data, the author comes directly to the research location, namely the Zareen kebaya rental shop, Jalan Poros Kabo, Swarga Bara housing complex, extension block I no. 2, North Sangatta. The informants in this study were the shop owner and employees of the Zareen kebaya rental shop. In data collection, the researcher used interview, observation, documentation techniques and the data obtained, collected and processed descriptively qualitatively.Based on the results of the study, it can be concluded that online promotion at zareen kebaya rental is effective in increasing turnover through social media strategies, attractive promotions through video and photo content, customer testimonials, and responsive services that build loyalty. This method has been running well even though there are still obstacles. The obstacles experienced by the store are up and down sales, namely, monitoring demand patterns through social media, working with suppliers to increase stock, providing collections that can be worn at many events, and adjusting collections based on market trends. This strategy allows the store to continue to meet customer needs and increase sales.

Permintaan material tubing di sektor minyak dan gas adalah elemen penting yang secara langsung berpengaruh pada kelancaran proses produksi. Tubing berfungsi sebagai saluran utama untuk mengalirkan fluida dari reservoir ke permukaan, sehingga keterlambatan dalam mendapatkan komponen ini bisa mengganggu proses pengeboran dan produksi. Salah satu kendala utama dalam pengelolaan rantai pasok adalah ketidakpastian dalam fluktuasi permintaan material, terutama dalam kondisi operasional yang berubah-ubah seperti yang dialami oleh PT Pertamina EP Asset-1 Field Jambi. Oleh karena itu, diperlukan metode peramalan yang dapat secara tepat memperkirakan permintaan di masa mendatang untuk mendukung keputusan dalam pengadaan dan pengelolaan stok. Studi ini bertujuan untuk menganalisis dan meramalkan permintaan material tubing dengan menggunakan metode Single Exponential Smoothing (SES), yang dikenal efektif untuk data yang tidak memiliki tren dan tidak musiman. Data yang dianalisis adalah permintaan tubing dari tahun 2015 hingga 2023. Dua nilai smoothing (dan ) diuji untuk menilai akurasi model dengan menggunakan indikator Mean Absolute Deviation (MAD), Mean Squared Error (MSE), dan Mean Absolute Percentage Error (MAPE). Hasil penelitian menunjukkan bahwa nilai  menghasilkan tingkat akurasi yang superior dengan MAD sebesar 479,55, MSE sebesar 614. 854,49 dan MAPE sebesar 16,8%. Temuan tersebut menggambarkan bahwa metode SES dapat berfungsi sebagai alat yang efektif untuk mendukung efisiensi pengadaan material, pengendalian persediaan, serta pengambilan keputusan strategis dalam sistem logistik perusahaan.

This study aims to examine the potential and challenges of utilizing Solar Power Plants (PLTS) in Medan City, which is geographically located near the equator and receives high exposure to sunlight throughout the year. The method used is a literature review with a narrative review approach that analyzes secondary data from various journals and relevant scientific articles. The results of the study show that Medan City has an average annual horizontal global solar radiation intensity of 463.61 W/m², with the potential for electrical power that can be generated from rooftop solar panels reaching 748.57 MW (monocrystalline), 598.85 MW (polycrystalline), and 299.43 MW (thin film). This potential is comparable to the capacity of large-scale power plants. The use of PLTS contributes to reducing carbon emissions, increasing energy security, creating jobs, and developing the local economy. However, challenges such as high installation costs, limited suitability of roof structures, and low public awareness are still major obstacles in the implementation of this technology. Therefore, synergy is needed between government policies, public education, and technological innovation to optimize the use of solar energy in urban areas such as Medan.

Malaria is an infectious disease caused by Plasmodium parasites and transmitted through the bites of female Anopheles mosquitoes. It remains a serious public health issue in various endemic regions, particularly in developing countries. This study aims to identify the factors associated with malaria incidence and evaluate the effectiveness of prevention and control programs that have been implemented. A quantitative approach with a descriptive correlational research design was used, involving secondary data from the Health Office reports and primary data collected through field surveys in the endemic area of PT. Tandan Sawita Papua, Keerom Regency. The results showed that malaria incidence is associated with the use of mosquito nets and the use of mosquito repellents. The study concludes that an integrated approach to malaria control is essential, including community education, environmental improvements, and sustainable health policy support.

This study aims to compare two main theories in modern cosmology, namely the Big Bang Theory and the Steady State Theory, using a descriptive cosmographic approach. This study is motivated by the lack of deep understanding as well as the limited Indonesian literature discussing the fundamental differences between the two theories. By employing a qualitative method through literature review, this research examines the characteristics, advantages, and limitations of each theory based on the latest scientific evidence and cosmographic perspectives. The analysis results show that the Big Bang Theory has strong support from observational evidence, such as cosmic microwave background radiation (CMB), galaxy redshift, and the distribution of light elements, which reinforces the narrative of the expansion and evolution of the universe. In contrast, the Steady State Theory is considered less relevant due to the absence of observational evidence for the creation of new matter and its inability to explain structure and the dynamics of the universe that are currently observed.

This study evaluates the implementation of Behavior Based Safety (BBS) in improving occupational safety compliance at PT Wichindo Pratama, a heavy equipment manufacturing company with high work risks. The topic was chosen due to frequent violations of safety procedures, such as the improper use of Personal Protective Equipment (PPE) and neglect of Standard Operating Procedures (SOP), which increase the risk of accidents. A qualitative method was used through direct observation, in-depth interviews with 12 shift workers, and field assessments of safety facilities. The findings show that although the company has an Occupational Health and Safety (OHS) management system, non-compliance still occurs. Issues include incomplete PPE usage, disorganized work tools, and unsafe rest habits. Observations revealed potential hazards such as physical (noise), chemical (oil exposure), ergonomic (awkward postures), mechanical (machine use without full PPE), biological, and psychological risks (stress from shift work). BBS is seen as a strategy to connect existing OHS policies with safe work behavior by focusing on mindset and daily habits. The implementation of BBS is expected to reduce accidents and support the creation of a safer, more sustainable workplace.

This study uses a qualitative method to describe the infestation of Oryctes rhinoceros beetles in oil palm plantations and its impact on crop productivity. This pest poses a major threat to oil palm cultivation due to its ability to damage the growing points of both young and mature plants, resulting in a significant decline in yield. The study was conducted through field observations and in-depth interviews with farmers and field technicians at an oil palm plantation in Sumatra. The findings reveal that Oryctes infestations are more prevalent in plantations with poor sanitation and limited implementation of regular biological control systems. Farmers predominantly rely on mechanical and chemical control methods, which have proven to be less effective due to the lack of coordinated and sustainable application. Therefore, an ecologically-based integrated pest management strategy is needed, combining biological control, cultural practices, and farmer education to effectively suppress pest populations and ensure the sustainability of oil palm production.

Talking about the sustainability of life, humans cannot be separated from their dependence on energy needs. Most of the energy sources that we have used so far are fossil energy sources that are non-renewable. With the high dependence of humans on energy, innovation is needed to minimize energy limitations. One form of new renewable energy that can overcome this is Biogas. Biogas is a gas that can be obtained from the fermentation of livestock waste through technology in the form of an airtight tube called a biodigester which is useful in processing livestock waste into biogas energy. Through research that the group conducted using the literature review method, we found one village in Riau that has succeeded in utilizing biodigester technology to make biogas, namely Mukti Sari Village, Tapung District, Kampar Regency, which has now succeeded in becoming an energy independent village.

Organic waste management is an important issue in addressing environmental problems. One potential solution is bioconversion technology using Black Soldier Fly (BSF) maggots that can break down organic waste and produce larvae with economic value as animal feed. To increase the selling value and extend the shelf life, BSF larvae need to be dried using tools such as rotary dryers. This study aims to design and analyse the strength of a rotary dryer machine frame for maggot drying with a Finite Element Analysis (FEA) approach based on SolidWorks software. Simulations were carried out on several materials: ASTM A36, AISI 1020 Steel, and AISI 1045 Steel. The analysis results show that all materials are within safe limits based on Von Mises stress, deformation, and safety factor. AISI 1045 steel material gives the best performance with Von Mises stress of 14.238 MPa, deformation of 0.59 mm, and safety factor of 7.2. These results show that AISI 1045 steel is the most recommended material for the rotary dryer frame.

Sectio caesarea (SC) merupakan suatu tindakan bedah untuk melahirkan bayi melalui sayatan pada dinding perut dan rahim. Salah satunya faktor penyebabnya yaitu komplikasi oligohidramnion. Masalah yang dialami wanita pasca SC meliputi nyeri, keterbatasan gerak, dan menurunnya kemampuan aktivitas sehari-hari. Untuk mengetahui apakah program fisoterapi rehabilitasi yang diberikan dapat mengurangi nyeri serta meningkatkan kemampuan aktivitas fungsional pada pasien pasca operasi caesarea. Penelitian ini menggunakan metode case study yang dilakukan secara langsung kepada pasien Ny. FR berusia 24 tahun, di diagnosis post partum setelah menjalani operasi sectio caesarea yang disebabkan oleh kondisi oligohidramnion, dan dirawat di RS PKU Muhammadiyah Selogiri pada bulan Februari 2025. Program fisioterapi yang diberikan meliputi deep breathing exercise, ankle pumping, pelvic floor exercise, pelvic tilt exercise, serta latihan mobilisasi. Untuk mengevaluasi tingkat nyeri digunakan alat ukur Numeric Rating Scale (NRS), Curl Up Test  untuk mengukur kekuatan otot dan Kenny Self Care Index untuk mengukur kemampuan aktivitas fungsional. Setelah dua kali sesi terapi, terjadi penurunan tingkat nyeri : nyeri saat diam menurun dari skor 3 menjadi 2, nyeri tekan dari 7 menjadi 5, dan nyeri saat bergerak dari 6 menjadi 4. Adanya peningkatan kekuatan otot dari fair menjadi fair+, serta hasil Kenny Self Care Index dari 10 menjadi 23. Intervensi fisioterapi yang terdiri dari deep breathing exercise, ankle pumping, pelvic floor exercise, pelvic tilt exercise dan mobilisasi terbukti efektif dalam mengurangi nyeri, meningkatkan kekuatan otot serta meningkatkan kemampuan fungsional harian pada pasien dengan Post SC.