Disposal area is an area at an open pit mine that is used as a place to store or dispose of worthless materials. Disposal must also follow the specified safety factor standards, if the disposal design is not safe after being analyzed by a geotechnical engineer, the design must be redesigned to achieve the desired safety factor value. One way to increase the fk value is to make a Counterweight plan in making disposal. Where Counterweight is a fill material that is made with special treatment so that the soil bearing capacity increases which functions to withstand the load on it. Landslides on disposal slopes are one of the serious problems faced in mining activities, especially in areas with vulnerable geological and topographic conditions. PT Jembayan Muarabara, which operates in Marangkayu District, Kutai Kartanegara Regency, East Kalimantan Province, is no exception to this challenge. The A–A’ cross section shows a safety factor value of 1.118 in saturated conditions, which indicates that the slope is at a stable limit and needs to be improved through engineering such as adding counterweights. The B–B’ cross-section has a safety factor value of 2.332, which is included in the safe category and has met the provisions of the ESDM Ministerial Decree No. 1827 K/30/MEM/2018. The C-C’ cross-section has a safety factor value of 1.511, which is included in the safe category and has met the provisions of the ESDM Ministerial Decree No. 1827 K/30/MEM/2018.

Compressive strength is one of the mechanical properties of rock behavior. This study focuses on the Balikpapan and Kampungbaru Formations located in the Kutai Kartanegara area, East Kalimantan. The Schmidt Hammer testing method was applied due to the lack of previous studies utilizing this tool to evaluate rock hardness in correlation with compressive strength. The research site is situated in the Kutai Kartanegara area, specifically in the districts of Muara Badak, Muara Jawa, and Sanga-Sanga. Field observations revealed the presence of claystone slopes at predetermined locations. Based on the test results, the uniaxial compressive strength (UCS) values for the Balikpapan Formation range from 3.453 MPa to 5.454 MPa, while the Kampungbaru Formation ranges from 3.317 MPa to 8.571 MPa. The Schmidt Hammer rebound number (RN) values for the Balikpapan Formation range from 17 to 19.6, and for the Kampungbaru Formation from 15 to 23.7. A negative correlation was found between the rebound number and UCS, where higher RN values tend to correspond with lower UCS values. This is supported by the linear regression analysis showing a negative coefficient (-0.450).
 

Durability is defined as a measure of a rock's resistance to weathering and disintegration when the rock undergoes weathering processes over a short period of time. The susceptibility of rocks to disintegration is related to their low durability. Rock durability is often measured using the slake durability test. The slake durability test is widely used to assess physical changes resulting from wetting-drying processes (Franklin and Chandra, 1972). Therefore, slake durability testing is conducted to understand the weathering of rocks caused by heat and water, particularly clay stones which are one of the constituent rocks on a slope. The sampling location is around Sanga-sanga and Muara Badak. Sampling was conducted with coordinate points and the Balikpapan and Kampungbaru formations. The claystone samples taken were then brought to the Mineral and Coal Technology Laboratory of the Engineering Faculty of Mulawarman University for Slake Durability tests. In this study, the lowest index value obtained was 45.7% and the highest value was 93%, indicating high to very high durability. The difference in the durability index values of claystone at the research locations indicates the presence of variables that can affect the slake durability index values of the claystone in the Balikpapan and Kampungbaru formations, including grain size and mineral content as well as geological conditions at the research site. Based on the results of the claystone durability tests, the durability index value (Id2) was obtained, indicating that the sandstone at the research location falls into the classification of high to low.

In the Kutai Basin area, seasonal changes such as high rainfall can significantly increase groundwater content, so that the effect of water content on the shear strength of claystone, increasing water content in rocks tends to decrease shear strength. Water in the pores or fractures can increase pore water pressure and reduce effective normal stress. Shear strength is one of the most important mechanical parameters used to assess soil and rock stability, this parameter is very important in slope stability analysis, foundation planning, and various civil engineering and mining applications. Therefore, this study was conducted to determine whether the water content in rocks can affect the strength of rocks in receiving shear forces. The method used in this study is more quantitative and specific to the effect of water content on the shear strength of claystone in this area. Increasing water content in rocks tends to reduce shear strength. This study was conducted by taking claystone samples from several locations in the Kutai Basin. Data collection in the form of primary data and secondary data for testing physical properties and testing mechanical properties, in testing physical properties, the water content value will be taken as supporting data which is one of the factors that affect rock strength, in testing mechanical properties, claystone shear strength data will be taken. From the results of the physical properties test calculations, the air content in each Formation is obtained, namely, in the Kampungbaru Formation the minimum air content value is 15.54% and the maximum is 20.17%, in the Balikpapan Formation the minimum air content value is 10.21% and the maximum is 12,88%, in the Palaubalang Formation the minimum air content value is 10.49% and the maximum is 22.87%. The results of the strength of the claystone in receiving shear forces in the Kutai Basin are the Muara Jawa location 0.486MPa, Tanah Datar location 0.500 MPa, Sanga-sanga location 0.333 MPa, Muara Badak location 0.269, Air Putih location 0.711MPa, Mugirejo location 0.021 MPa and Lempake location 0.092 MPa.

The mining system applied by PT Bukit Baiduri Energi is an open pit mining system utilizing the open-pit method. The application of the open-pit method creates a depression that has a high potential to become a catchment area for both surface runoff and groundwater. In the mining pit of PT Bukit Baiduri Energi, there is a sump located at an elevation of -86 meters above sea level (mdpl). The planned mining boundary is at an elevation of -110 mdpl. Therefore, this research aims to determine the area of the catchment, runoff discharge values, sump capacity, and pump capacity, so that the volume of incoming water can be known, allowing for the control of the sump to prevent overflow that could disrupt mining activities.. Based on the data obtained and the calculations performed, the catchment area was found to be 103.42 ha. In the calculation of runoff discharge using the rational method, the total runoff discharge entering sump A9 was found to be 4,211.66 m3/day. The capacity of the sump was measured at 125,187.62 m3. In the pump capacity calculation, the pump capacity based on the pumping discharge was found to be 2,926.80 m3/day.

This study aims to analyze the effect of Farmer Exchange Rate (NTP), agricultural labor, and education on the rural poverty rate in western Indonesia during the 2019-2023 period. Using panel data from 17 provinces and the Fixed Effect Model (FEM) method, the results show that the three independent variables have a negative and significant effect on rural poverty. These findings identify that improving farmers' welfare, optimizing labor in the agricultural sector, and improving education can be effective strategies in reducing poverty in rural areas.

Immunization is one of the most effective and efficient public health efforts in preventing diseases and reducing mortality rates in children such as smallpox, polio, tuberculosis, hepatitis B, diphtheria, measles, rubella, congenital rubella syndrome (CRS), tetanus, pneumonia (lung inflammation) and meningitis (inflammation of the brain membrane) (Nandi & Shet, 2020). Data from the Indonesian Ministry of Health in 2020 showed that vaccination coverage in the 3rd and 4th months was months. However, efforts can be made to increase child vaccination coverage to 80% and that does not include DT, MR2, and HPV vaccinations. As, measles data is only 45%, diphtheria-tetanus (DT) is around 40% (Indonesian Ministry of Health, 2021). To determine the relationship between maternal knowledge and the completeness of basic immunization in children at the Raden Omas Posyandu. This study uses a quantitative research design with a cross-sectional method. The population in this study consisted of mothers who had children aged 12 to 18 months at Posyandu Raden Omas, totaling 36 mothers. The statistical results showed a relationship between maternal knowledge and the completeness of basic immunization in children p-value (0.048). Most respondents had good knowledge, as many as 13 respondents (36.1%). Sufficient knowledge, as many as 13 respondents (36.1%). Insufficient knowledge, as many as 10 respondents or 27.8%. Most respondents had incomplete immunization, namely 18 respondents (50%).

Kebutuhan akan pelayanan merupakan aspek penting yang tidak dapat dipisahkan dalam struktur sosial masyarakat. Begitu pula dengan pelayanan publik yang diberikan oleh pemerintah. Baik atau buruknya kualitas pelayanan bergantung pada kemampuan penyelenggara layanan dalam memenuhi harapan masyarakat secara konsisten. Hasil studi pendahuluan menunjukkan bahwa kualitas pelayanan pada Mall Pelayanan Publik (MPP) Kabupaten Batang masih rendah. Tujuan penelitian ini untuk menguji pengaruh pemanfaatan media sosial, profesionalisme pegawai dan tata ruang kantor terhadap kualitas pelayanan pada MPP Kabupaten Batang. Penelitian ini merupakan penelitian kuantitatif dengan desain kausalitas. Populasi penelitian adalah pengguna layanan di MPP Kabupaten Batang. Jumlah sampel sebanyak 115 responden yang dihitung menggunakan rumus iterasi. Teknik pengambilan sampel menggunakan teknik non probability sampling dengan teknik pengumpulan data menggunakan kuesioner. Hasil penelitian menunjukkan bahwa pemanfaatan media sosial berpengaruh positif tetapi tidak signifikan terhadap kualitas pelayanan. Profesionalisme pegawai dan tata ruang kantor berpengaruh positif dan signifikan terhadap kualitas pelayanan. Saran pada penelitian ini adalah hendaknya MPP Kabupaten Batang meningkatkan keterlibatan dengan masyarakat melalui media sosial dengan membalas komentar dan pertanyaan dengan tepat waktu serta mengadakan diskusi aktif di media sosial

Mata pelajaran fisika kelas X pada materi pengukuran merupakan materi yang sulit dan sering mengalami miskonsepsi. Miskonsepsi merupakan kesalahan konsep yang dimiliki oleh siswa yang berbeda dengan para ahli. Miskonsepsi akan berdampak tidak baik pada proses pembelajaran apabila tidak ditindaklanjuti. Oleh karena itu, perlu dilakukan analisis miskonsepsi yang terjadi pada siswa serta faktor penyebab miskonsepsi pada materi pengukuran. Penelitian ini memiliki tujuan yaitu untuk menganalisis dan mengetahui bagaimana miskonsepsi yang dialami oleh siswa pada materi pengukuran dengan menggunakan instrumen four-tier diagnostic test serta faktor yang menyebabkan terjadinya miskonsepsi pada siswa kelas X SMA N 8 Semarang. Waktu penelitian dilaksanakan pada tanggal 7 Mei -16 Juni 2024. Populasi penelitian ini yaitu siswa-siswi kelas X Fisika dengan metode purposive sampling diperoleh jumlah sampel sebanyak 141 siswa. Teknik pengumpulan data menggunakan instrumen four-tier diagnostic test tipe pilihan ganda dan wawancara pada siswa. Hasil analisis menunjukkan siswa masih mengalami miskonsepsi sebanyak 34,45% dari jumlah sampel dan berada pada kategori sedang. Beberapa miskonsepsi yang terjadi pada sub konsep besaran dan satuan sebanyak 30,71%, sub konsep angka penting sebanyak 39,57% dan sub konsep ketidakpastian pengukuran sebanyak 33,07%. Dapat disimpulkan bahwa miskonsepsi masih terjadi pada siswa SMA N 8 Semarang khususnya pada materi pengukuran kelas X.

This study aims to compare the performance of PT Metro Healthcare Indonesia, PT Kalbe Farma Tbk, PT Indocement Tunggal Prakarsa Tbk, PT Siloam International Hospitals Tbk, and PT Hetzer Medical Indonesia Tbk. The focus of the research is the analysis of financial and operational performance to provide an in-depth understanding of the companies' competitiveness and efficiency within their respective sectors. The study employs a quantitative method with a descriptive-comparative approach. Secondary data were collected from the annual financial reports of each company over a specific period. The analysis was conducted using key financial ratios such as Return on Equity (ROE), Debt to Equity Ratio (DER), and Current Ratio (CR). Additionally, an operational performance trend analysis was performed to understand the comparative effectiveness of the companies in resource management. The results of the analysis indicate significant differences in financial performance between companies operating in the healthcare sector (PT Metro Healthcare Indonesia, PT Kalbe Farma Tbk, PT Siloam International Hospitals Tbk, and PT Hetzer Medical Indonesia Tbk) and those in the building materials sector (PT Indocement Tunggal Prakarsa Tbk). Companies in the healthcare sector tend to have higher profitability ratios compared to those in the building materials sector, although there are variations in debt and asset management efficiency. These performance differences can be attributed to underlying industry factors such as market demand, levels of innovation, and government policies. Companies in the healthcare sector benefit from growth driven by increasing public demand for healthcare services. In contrast, the building materials sector is more vulnerable to economic fluctuations and infrastructure investments. This study concludes that industry sectors and business models have a significant impact on companies' financial performance. Healthcare sector companies demonstrate more stable and promising performance compared to the building materials sector. This study is expected to provide insights for investors in selecting suitable investment portfolios.