This study aims to evaluate the performance of the loading and unloading equipment in coal mining activities at the Mahakam Pit, PT Insani Bara Perkasa Site Km 11, East Kalimantan. The research was motivated by the importance of achieving mechanical equipment performance standards according to the Decree of the Minister of Energy and Mineral Resources No. 1827 of 2018. Data were obtained through direct observation and analysis of actual working time and evaluation of operational constraint factors. The results of the analysis showed that before the evaluation, the mechanical availability (MA) value was 87.24%, physical availability (PA) 88.51%, availability utilization (UA) 88.73%, and effective utilization (EU) 78.54%. After evaluating the constraint time, there was an increase in all parameters: MA to 88.71%, PA to 89%, UA increased to 90%, and EU reached 80%. This evaluation also had an impact on increasing the productivity of the loading and unloading equipment from 268.41 bcm/hour to 284.43 bcm/hour. Thus, the evaluation of work obstacles is proven to be effective in increasing the efficiency and productivity of the digging-loading equipment at the research location.

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.

This activity aims to increase student involvement and role in entrepreneurial activities as well as foster students' interest in entrepreneurship through entrepreneurship education through marketing and product sales strategies. This activity shows that students' entrepreneurial interest is very high, the marketing and sales skills demonstrated are the main reference in developing their ideas for business. So, this activity shows how to develop through training strategies towards product sales simulations and group work carried out by students. The student's role in developing this strategy succeeded in significantly improving marketing and sales skills. The results of this entrepreneurial practice provide valuable insight for students regarding the factors and keys to success in entrepreneurship.

In rehandling activities In coal processing activities, mechanical tools such as crushers are needed to obtain production results in accordance with the company's desired targets according to the crusher target, therefore in processing it is necessary to carry out precise calculations, so that the ability of the tool (crusher) and know what things greatly affect the production processing process, so that it can be used optimally and has a high efficiency value for optimal production. Therefore, it is necessary to evaluate the results of the crusher production and the productivity of the support unit during rehandling activities in achieving the production target at ROM Port Area 2 in order to adjust the ability of the tool and other influencing factors with the crusher production target desired by the company. Actual rehandling productivity meets the crusher production plan target of 1100tph. Productivity in each zone with DT wheel 10, namely zone H there are 2 of 120,620 tph and 154,935 tph, zone L of 135,351 tph, zone M of 138,313 tph, zone I of 189,709 tph. And constraints on the crusher during a month that also affect obstacles in rehandling include schedule time with a total time of 176.72 hours, breakdown time with a total time of 4.84 hours, unscheduled time with a total time of 154.62 hours.

Perkembangan teknologi digital telah mendorong generasi milenial dan Gen Z di Indonesia untuk aktif berinvestasi melalui instrumen berbasis teknologi. Namun, keputusan investasi mereka masih dipengaruhi oleh bias perilaku seperti overconfidence, herding, dan loss aversion, yang berdampak pada tingkat toleransi risiko keuangan. Penelitian ini bertujuan menganalisis pengaruh ketiga jenis bias tersebut terhadap toleransi risiko serta membandingkan perbedaannya antara Milenial dan Gen Z. Penelitian dilakukan dengan pendekatan kuantitatif melalui survei kepada 500 responden dari kedua generasi, menggunakan kuesioner skala Likert 5 poin. Data dianalisis menggunakan Structural Equation Modeling (SEM) melalui SmartPLS, termasuk uji multi-group analysis untuk membandingkan antar generasi. Hasil menunjukkan bahwa overconfidence meningkatkan toleransi risiko, sementara loss aversion menurunkannya. Pengaruh herding bervariasi di antara kedua generasi, menunjukkan perbedaan karakteristik perilaku investasi. Temuan ini memperkaya literatur perilaku keuangan dengan konteks lokal dan menyoroti pentingnya pendekatan edukasi keuangan yang disesuaikan dengan profil generasi. Selain itu, hasil penelitian ini membuka peluang pemanfaatan teknologi, termasuk kecerdasan buatan (AI), untuk membantu investor muda dalam mengenali dan mengelola bias perilaku serta meningkatkan pengambilan keputusan keuangan yang lebih rasional dan adaptif di era digital.

The rapid advancement of digital technology has revolutionized the financial services industry, compelling banks to adopt more efficient and secure digital platforms. This study explores the implementation of a Management Information System (MIS) to enhance the efficiency and security of interbank transactions through the BCA Mobile application, a leading digital banking solution provided by PT Bank Central Asia (BCA). The research employs a case study approach and gathers primary data from 30 respondents who are active users of BCA Mobile. Using SPSS for validity testing, the results indicate that the efficiency variable (X1) has a strong and significant positive correlation with improved transaction performance, while the security variable (X2) also contributes positively, albeit to a lesser degree. The findings suggest that an integrated MIS—featuring rapid data access, process automation, and biometric authentication—can substantially enhance operational reliability and customer trust. Moreover, the prototype development model used in this study supports user-centered design iterations to optimize usability and system functionality. The research contributes to digital banking literature by demonstrating how a tailored MIS can support financial inclusion, customer satisfaction, and strategic agility in Indonesia’s competitive banking sector. It also offers practical implications for banks seeking to minimize operational risks and improve service quality through system innovation. This study underscores the significance of continual MIS enhancements to sustain customer confidence and address evolving cybersecurity threats in the digital era.

In Indonesia, numerous initiatives have been implemented to address the issue of stunting; however, these efforts have yet to yield optimal results. This study aims to critically evaluate the effectiveness of an extension program that utilizes a dialogical approach in modifying maternal behaviors related to the provision of adequate nutrition for their children. In the context of non-formal education, extension serves as a crucial learning process for adults, particularly in enhancing their overall quality of life. The research was conducted using a quantitative methodology, employing survey techniques to gather data, which were subsequently analyzed using both descriptive and inferential statistical methods. This study is among the first to empirically compare dialogical and traditional extension approaches within the context of rural Indonesia, providing robust quantitative evidence that interactive, collaborative learning environments significantly outperform conventional one-way communica-tion models in promoting sustainable behavioral changes among mothers. The findings reveal that the extension program, when executed with a dialogical approach, exerts a significant positive influence on altering mothers' nutritional practices for their children. This outcome stands in stark contrast to traditional, linear extension models, which typically rely on one-way communication from the instructor to the participants. In contrast, the dialogical approach fosters an interactive environment where mothers are encouraged not only to ask questions and share personal experiences but also to engage in a more collaborative learning process that ultimately enhances their behavioral change towards better nutrition.

The lack of formal job access and limited employment sectors in rural areas have increased unemployment and poverty rates. Expanding rural entrepreneurship is a potential solution to create job opportunities and increase rural communities' income. Therefore, a comprehensive strategy needs to be developed to strengthen social capital and support the sustainability of Village-Owned Enterprises (BUMDes). This research examines efforts to build entrepreneurship in the village environment through innovations implemented in BUMDes. It explores innovative strategies used by BUMDes to enhance the village's economic potential, focusing on developing local businesses, empowering the community, and improving access to resources. The research methods used include surveys, interviews, and quantitative data analysis. The results show that BUMDes and their partners have a good relationship, and BUMDes managers regularly communicate with their partners. However, BUMDes managers must also establish good communication with community members and local leaders. If BUMDes managers can build strong relationships with village residents, they will find it easier to obtain support, information, and helpful advice for managing BUMDes. BUMDes managers are categorized as having a high level of support for those in the community who have difficulty accessing business capital loans. Furthermore, the results of the path analysis reveal that there is no statistically significant relationship between the variables of experience (X1), motivation (X1), ICT media role (X3), and social capital capacity (Y1). This means that in the context of this study, these three independent variables do not significantly impact social capital capacity (Y1). These findings can guide the government, community, and relevant stakeholders in supporting efforts to build rural entrepreneurship through BUMDes innovations.

Styrofoam digunakan sebagai bahan utama pengganti agreagat kasar guna mendapatkan beton ringan dengan berat volume menjadi kurang dari 1900 kg/m3 dan juga memiliki kuat tekan beton minimum 100 kg/cm2 dengan cara membuat benda uji berbentuk silinder Ø15-30 cm dengan perbandingan volume komposisi 1 yaitu 1Pc : 2Pasir : 3Styrofoam,  perbandingan  volume  komposisi 2 yaitu 1Pc : 1.5Pasir : 2, 5Styrofoam dan perbandingan komposisi 3 yaitu 1Pc : 1,25Pasir : 2,75Styrofoam.  Dari hasil penelitian menunjukkan karakteristik styrofoam tersebut yang digunakan sebagai pengganti agregat kasar tidak memenuhi syarat untuk beton mutu tinggi karena berat volume styrofoam hanya diangka 0,095 kg/ltr, Berat volume yang diperoleh untuk komposisi 1Pc : 2Pasir : 3Styrofoam adalah 1278,89 kg/m3, komposisi 1Pc: 1,5 Pasir: 2,5 Styrofoam adalah 1242,56 kg/m3, dan komposisi 1Pc : 1,25Pasir : 2,75Styrofoam adalah 1097,88 kg/m3, jika dibandingkan dengan beton konvensional dengan komposisi 1Pc : 2Pasir : 3Kerikil adalah 2387,73 kg/m3 yang mempunyai selisih berat kurang lebih 46,43%, karakteristik kuat tekan beton untuk komposisi 1Pc : 1,5Pasir : 2,5Styrofoam 84,73 kg/cm2 dan komposisi 1Pc : 1,25Pasir : 2,75Styrofoam 71,93 kg/cm2 termasuk dalam klasifikasi beton mutu B0 (<100 kg/cm2), sedangkan kuat tekan karakteristik untuk komposisi 1 Pc: 2 Pasir: 3 Styrofoam adalah 107,13 kg/cm2 (>100 kg/cm2)

Banjir merupakan bencana alam dengan jumlah terbesar di Indonesia. Satu dari banyak wilayah yang menjadi langganan banjir adalah Kecamatan Sayung di Kabupaten Demak Provinsi Jawa tengah. Salah satu penyumbang debit banjir di daerah Sayung sungai Gonjol dimana memiliki dua peran yaitu penampungan debit air yang bersumber dari curah hujan dan penampungan debit air saat terjadi pasang air laut. Tujuan analisis hidrologi pada DAS Gonjol adalah untuk mengetahui debit banjir rencana periode ulang yang dapat digunakan dalam merencanakan penanggulangan banjir di Kecamatan Sayung Demak. Dalam Perhitungan debit banjir ini memakai data curah hujan maksimum yang didapat dari Stasiun Hujan Pucang Gading. Hasil Penelitian ini didapatkan grafik Intensitas hujan selama 24 jam untuk periode ulang 2, 8, 10, 20, 50 dan 100 tahun dan debit banjir maksimum DAS Gonjol yang didapat adalah Q2 (43,77m3/sec) , Q5 (51,73 m3/sec), Q10 (55,95 m3/sec), Q20 (59,40m3/det), Q50 (63,23 m3/sec), Q100 (65,87 m3/sec)