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This article examines the use of cooperative learning strategies in Christian Religious Education (CRE) as an instructional approach that emphasizes the strengthening of students’ faith and Christian character. The discussion covers the definition, objectives, conceptual foundations, principles, and operational procedures of cooperative learning, which are then connected to the theological goals of CRE. The study employs a qualitative approach using a library research method, analyzing pedagogical and theological literature to construct a conceptual framework for implementing cooperative learning within the context of CRE. The findings indicate that cooperative learning strategies are highly aligned with the essence of CRE, as they foster dialogical interaction, shared responsibility, empathy, and the internalization of Gospel values through collaborative learning processes. The effective implementation of this strategy can create a participatory, reflective, and formative learning community that enhances not only cognitive understanding but also students’ attitudes, spirituality, and Christian character. This research is significant in providing both theoretical and practical foundations for CRE educators in designing learning experiences that are relevant, relational, and transformative in accordance with the goals of faith formation.

This article examines the relationship between Artificial Intelligence (AI), the concept of sensus communis proposed by Nicholas of Cusa (1401–1464), and the formation of religious communities. Through a theoretical-philosophical analysis, the author argues that sensus communis as the integrative capacity of the human intellect that unifies sensory, rational, and intuitive dimensions offers a normative epistemological framework for critically addressing the reductionism inherent in algorithmic AI. The main finding indicates that AI constitutes only a partial simulacrum of the integrative capacity of human reason and, therefore, cannot replace the ontological-transcendental dimension of authentic formation. Accordingly, this article proposes a model of critical-integrative formation grounded in three pillars: the selective use of AI, the preservation of AI-free spaces, and hermeneutical integration. The relevance of Cusa’s thought for contemporary religious formation is articulated in three contributions: docta ignorantia as a formative habitus, coincidentia oppositorum as a paradigm of dialogue, and ontological participation as the foundation of knowledge.

Slope stability studies are crucial in determining the sustainability and operational safety of mining activities. This research was conducted to analyze the correlation between rock porosity and Unconfined Compressive Strength (UCS) results, as well as the corrleations between Point Load Index (PLI) and Unconfoned Compressive Strength (UCS) results. These two correlations form the primary components of the study. Three types of rock were tested claystone, coal, and siltstone. The results of the study are as follows for the correlation between porosity and Unconfoned Compressive Strength (UCS), claystone yielded a coefficient of determination (R2) of 0.32 is classified as weak correlation, with the linear regression equation Y=-0.11X+6.98. Coal yielded an (R2) of 0.56 is classified a moderate correlation, with the equation Y=-1.98X+103.77. Siltstone yielded an (R2) of 0.86 is classified a strong correlation, with the equation Y=-0.38X+20.02. Regarding the correlation between Point Load Index (PLI) and Unconfoned Compressive Strength (UCS), claystone achieved an (R2) of 0.12 is classified a very weak correlation, with the linear regression equation Y=8.91X. Coal achieved an (R2) of -0.27 is classified a very weak correlation, with the equation Y=27.87X. Lastly, siltstone achieved an (R2) of -0.45 is classified a very weak correlation, with the linear regression equation Y=24,90X.

This study examines the increasing prevalence of premarital sexual behavior among Indonesian adolescents, including Catholic youths, which poses a significant challenge to the moral formation and faith development promoted by the Catholic Church. Using a qualitative method with a literature study approach, this research analyzes the phenomenon of adolescent free sex from the perspective of Catholic moral theology and family pastoral care. The findings reveal that the rise of free sexual behavior among adolescents is strongly influenced by curiosity, fragmented family structures, weak value-based sexual education, and the unregulated use of digital media. Moral theology views sexuality as a divine gift whose authentic meaning is realized only within the sacramental bond of marriage; therefore, premarital sex is considered a deviation from human dignity and the true nature of love. The study also highlights the essential role of the family as the Domestic Church in shaping conscience, character, and responsible sexual attitudes among youths. Pastoral strategies proposed include integral sexual education, strengthening parent–child communication in the digital age, and contextual pastoral accompaniment rooted in compassion, as emphasized in Amoris Laetitia. This research underscores the need for collaborative efforts between families, the Church, and educational institutions to guide young people toward a holistic understanding of sexuality, authentic love, and their Christian vocation in contemporary society.  

Rock stability and service life in geotechnical and mining engineering are highly dependent on the rock's mechanical and physical parameters, where the variation in sandstone grain size is a crucial intrinsic factor. This study aims to comprehensively analyze the correlation between sandstone grain size with uniaxial compressive strength (UCS) and resistance to weathering (Slake Durability Index) in samples taken from the Balikpapan and Pulau Balang Formations in the Samarinda area, East Kalimantan. The research methodology involved a series of standard laboratory tests, including rock physical properties analysis, grain size distribution analysis, UCS testing, and slake durability testing through three cycles. The test results show a significant correlation: sandstone with finer grain sizes and higher density consistently demonstrates greater UCS values and a higher Durability Index, indicating superior mechanical and physical resistance. Specifically, the Pulau Balang Formation exhibits a more compact structure and finer grain size, resulting in better durability values compared to the Balikpapan Formation. These findings are important as a geomechanical data basis for slope design planning, rock mass stability analysis, and material selection in infrastructure projects or mining operations involving both formations.

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.

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).  

The phenomenon of online ojek as part of the platform-based economy has grown rapidly, especially in Indonesia. This job is in high demand by youth as an alternative job that offers flexibility. However, behind the benefits offered, this profession also carries economic, social, and political risks. This article aims to examine the identity formation of youth working as online ojek drivers in the context of political-economic risks that arise in digital platforms, using Ulrich Beck's Risk Society Theory. In the risk society, uncertainty and dependence on systems controlled by digital platforms are the main factors that shape the social identity of the drivers. This research finds that the identity of online ojek youth is formed through interactions with digital platforms that prioritize efficiency and profitability, as well as with the risks they face every day in working under systemic uncertainty.

This study aims to analyze the game strategy and formation effectiveness in futsal in college students. Futsal as a fast-paced sport requires the application of the right strategy and effective formation to win. One strategy that is often used is power play, which involves the goalkeeper as an additional player to strengthen the attack. The research method used is descriptive with an observation approach and video analysis of student futsal matches. The data was analyzed to determine the strategy pattern, the type of formation used, and the success of the strategy in creating opportunities and goals. The results showed that the effectiveness of the power play strategy was still relatively low with a success rate of around 6.7%, caused by main factors such as shooting blocked by opponents, inaccurate passing, and loss of ball control. Commonly applied formations are 2-2 and 1-2-1, which provide a balance between defense and attack, but their success is highly dependent on technical ability and coordination between players. Mastery of basic techniques such as passing, control, and shooting are key in executing strategies and formations effectively. This study concludes that the development of basic technical training and improvement of team coordination are very important to improve the effectiveness of game strategies and futsal formations in university students. The adaptation of strategies according to the match situation is also a determining factor in the team's success in the competition.

This research examines formation management at the Regional Staffing Agency of Central Kalimantan Province using a descriptive qualitative approach. The focus of the research includes the implementation of formation management, identification of the scope of routine activities, and development of optimization strategies. The results revealed that formation management has been implemented through various integrated aspects, including employee needs planning, formation preparation, staffing budget preparation, employee recruitment process, development and training, and performance evaluation. BKD Central Kalimantan Province has shown good performance in carrying out its duties and functions, focusing on developing employee competencies and increasing employee mobility as part of a quality formation strategy.

In the process of designing mine slopes, drilling or tunneling, to determine the level of strength and brittleness factors of rock on a slope, it is necessary to carry out a uniaxial compressive strength test or indirect tensile strength test of the rock. Compressive strength testing is carried out to determine how long the rock maintains its strength or elastic properties when pressure is applied. This data can be used as information to understand the analysis of factors that influence the physical properties of rocks on the compressive strength of rocks from physical properties and compressive strength testing activities. and indirect tensile strength testing is carried out to determine the stress value contained in the rock. To determine the level of rock brittleness, it can be done by comparing the uniaxial compressive strength value and the indirect tensile strength value. This data can be used as information and reference for companies that will design a mine slope, drill and tunnel, how strong the strength and level of brittleness of rocks in areas dominated by sandstone. This research uses quantitative methods, so that to obtain accurate calculation data, testing methods are used in the form of uniaxial compressive strength tests and indirect tensile strength tests, in this case tested on sandstone samples obtained from 2 rock formations including the Pulaubalang formation and the Balikpapan formation, so that accuracy The test result values ​​can be obtained well. And after testing, a comparison is made between the uniaxial compressive strength test value and the indirect tensile strength test to obtain the Brittleness Index value.Based on the observation results, it can be concluded that when the brittleness of the rock becomes greater, the performance of the cutting digger increases several times.    

Uniaxial Compressive Strength is a test method to classify the strength and characterization of intact rock. Where it is important information in determining the strength and characteristics of a rock obtained by testing using the UCS tool. In this research, an alternative is made in determining the UCS value precisely and easily, namely by using the schmidt hammer test and compressive strength test. Therefore, this research aims to obtain the correlation value between the results of the compressive strength test and the schmidt hammer test on sandstone. Based on the results of observations and calculations that have been carried out, it can be concluded that the compressive strength value in the Balikpapan formation is lower than the compressive strength value in the Pulaubalang formation where the compressive strength value in the Balikpapan formation is 3.3 MPa-4.3 MPa, while the compressive strength value in the Pulaubalang formation is 4.3-5.57 MPa. The rebound number in the Balikpapan formation is lower than the rebound number in the Pulaubalang formation, where the rebound number in the Balikpapan formation is 16-17.8, while the rebound number in the Pulaubalang formation is 18-22.3. The correlation of the uniaxial compressive strength value with the rebound number of the schmidt hammer shows a positive linear correlation between the UCS value and the rebound number of the schmidt hammer, in this case it can be seen that when the uniaxial compressive strength value is higher, the rebound number of the schmidt hammer is also higher.

The uniaxial compressive strength value is one of the important parameters that is widely used in rock engineering projects in determining rock mass. The strength of rocks is greatly influenced by the water content and degree of saturation in the rock. Reduction of strength in rock is associated with an increase in water content, a slight increase in water content will cause a significant deviation in the compressive strength test value.This research is quantitative research, so to obtain accurate calculation data, testing methods are used in the form of compressive strength tests on rocks and physical properties tests in the treatment of samples of original rock, saturated rock and dry rock before testing. In this research, 2 types of rock were used, including limestone and sandstone in 2 rock formations, namely the Balikpapan formation and the Pulaubalang formation, so that the accuracy of the test result values ​​could be obtained well. Based on the results of observations and calculations that have been carried out, the water content values ​​of limestone in natural, saturated and dry conditions in the Balikpapan formation are obtained with average values ​​of 1.709%, 2.262% and 0.961% respectively. The water content of sandstone in natural, saturated and dry conditions is the Pulaubalang formation with average values ​​of 2.491%, 9.425% and 0.463% respectively. The UCS value of limestone in natural, saturated and dry conditions in the Balikpapan formation has an average value of 25.29 Mpa, 37.57 Mpa and 40.70 Mpa respectively. The UCS value of sandstone in natural, saturated and dry conditions in the Pulaubalang formation has an average value of 9,565 Mpa, 6,537 Mpa and 12,730 Mpa. It can be concluded that the correlation between uniaxial compressive strength values ​​and water content values ​​in limestone and sandstone shows a positive linear correlation, which means they have a strong relationship. The higher the compressive strength value of limestone and sandstone, the lower the water content value.    

Drilling is an essential operation in mining activities, particularly in borehole preparation for blasting purposes. The efficiency of blasting hole preparation depends significantly on the drilling speed to penetrate the rock formations.Drilling Rate Index (DRI) measures the ease or difficulty of drilling through rock formations. It combines two tests: Brittleness (S20) and SJ value. DRI serves as a common metric to predict drilling capabilities and is classified according to a table classification of drilling rate index.The classification of DRI values for sandstone and mudstone of Balikpapan Formation at PT. RCI Job Site ABK indicates a very high classification with DRI values ranging from 66 to 86. Testing results for samples SBP1 (DRI 75.9), SBP2 (DRI 81.7), SBL1 (DRI 66.6), and SBL2 (DRI 71.1) all fall within the very high classification range.    

Rotary drilling is one of the drilling methods that is often used for stripping overburden in open pit mining activities. In the rotary drilling process, prediction of the penetration rate is very important for scheduling production and estimating drilling costs. Drilling in mining activities is used, among other things, to create blast holes. In blasting activities, drilling is the first activity that must be carried out to provide a blast hole which will later be filled with explosives to be detonated. Meanwhile, the speed at which the blast hole is prepared is influenced by the speed of the drilling tool to penetrate the rock. Drilling speed is influenced by two factors, namely internal factors and external factors.      

Drilling capability, is one of the most important considerations in rock excavation, which can be defined as the ease of drilling a rock mass at a certain time for a long period of time with a drill bit. Rock drilling capabilities are influenced by various factors related to drilling machine working parameters and geotechnical characteristics of the rock mass (Yenice, 2019). Based on the above, this research was carried out to determine the UCS value in rock samples and the relationship formed by the DRI test value with the value produced in the UCS test using a regression analysis graph.    

Rock strength is the ability of a rock to maintain its strength until it breaks when a force is applied. Rock compressive strength is a very important parameter in the world of mining. The compressive strength of the rock determines the mining method that will be used. Several things that influence the compressive strength of rock include porosity, true specific gravity, and water content. With the same volume, if the porosity value is high, the true specific gravity value will be low because of the large number of pores in the rock. This allows the compressive strength value to be low because the rock will crumble more easily when pressure is applied. After testing, the highest compressive strength value was in the Pulaubalang Formation, location 2, with a value of 2.19 MPa. Meanwhile, the lowest compressive strength value was in the Kampungbaru Formation, location 1, with a value of 1.49 MPa. In accordance with the stratigraphic layers in the Kutai Basin, the Pulaubalang Formation is older than the Kampungbaru Formation.    

Uniaxial Compressive Strength is a test method to classify the strength and characterization of intact rock. Where it is important information in determining the strength and characteristics of a rock obtained by testing using the UCS tool. In this research, an alternative is made in determining the UCS value precisely and easily, namely by using the schmidt hammer test and compressive strength test. Therefore, this research aims to obtain the correlation value between the results of the compressive strength test and the schmidt hammer test on siltstone.This research is a quantitative research, so that to obtain accurate calculation data, testing methods are used in the form of compressive strength tests on rocks and schmidt hammer tests, which in this case are tested on siltstone samples. In this study, 2 rock formations were used, including the Pulau Balang formation and the Kampung Baru formation, so that the accuracy of the test results can be obtained properly.  Based on the results of observations and calculations that have been made, it can be concluded that the correlation of the uniaxial compressive strength value with the rebound number schmidt hammer value shows a positive linear correlation between the UCS value and the rebound number schmidt hammer value, in this case it can be seen when the uniaxial compressive strength value is higher, the rebound number schmidt hammer value is also higher.

This research was conducted in Slango village, Sarolangun Regency, Jambi. This research focuses on analyzing the source of rock origin, namely sandstone found in the Peneta Formation. Sandstone in the study area is quite widely distributed with varied characteristics, so determining the original rock is easy to do. This research was carried out to identify the origin of the rock through petrographic analysis of the sandstone so that the history of the formation of the Peneta Formation itself can be reconstructed. After provenance analysis, the Peneta Formation sandstone comes from the Recycle Orogen, precisely in the Subduction Complex Sources subzone. Apart from that, the Peneta sandstone also shows the origin of the Magmatic Arc. Thus, it is interpreted that the Peneta Formation sandstone has undergone several uplift processes due to tectonic activity and has experienced increased maturity or stability from the Continental Block Provenances. Apart from that, it is also influenced by the weathering process of granite heights or other volcanic materials, whether volcanic or plutonic.   Key words: Sandstone, Slango Village, Peneta Formation, Petrography, Provenance

Rock mass is a volume of rock consisting of rock material in the form of minerals, texture, composition and also consisting of discontinuous planes, forming a material and interconnected with all elements as a unit. The rock mass itself is composed of several intact rocks which basically have isotropic, continuous and homogeneous properties. However, the conditions found in the field are different, namely anisotropic, discontinuous and heterogeneous. These properties will certainly influence the test results in the uniaxial test. There are several factors that influence the results of uniaxial rock tests, one of which is the scale effect. The purpose of this test is to determine and analyze the effect of rock sample size on the uniaxial compressive strength value of claystone. This rock testing was carried out at the Mineral and Coal Technology Laboratory and the rock sampling locations were in Palaran District, Samarinda City and in North Samarinda District, Samarinda City. In this uniaxial compressive strength test, 3 side widths with different lengths will be used. After carrying out the uniaxial compressive strength test, the average uniaxial compressive strength test value was obtained in each formation, such as the Balang Island formation, the average rock compressive strength test value was 1.68 Mpa and the Balang formation, the average rock compressive strength test value was 3.10. Mpa. Based on these results, it can be concluded that the larger the sample size, the smaller the rock compressive strength test value tends to be.