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This research aims to analyze personality and communication styles in business negotiations. By examining various personality types such as extraverted, introverted, agreeable, conscientious, and neurotic, this study explores how personality characteristics influence communication strategies in the negotiation process. Through surveys and in-depth qualitative analysis of business professionals, the research found that individuals with extraverted personalities tend to be more proactive in taking initiative, whereas introverts are more inclined to deliberate carefully before acting. The communication styles employed also vary based on individual personalities. This research indicates that a deeper understanding of the role of personality in business communication can enhance negotiation effectiveness and improve final outcomes. The practical implications of these findings underscore the importance of adapting communication strategies based on the personality characteristics of negotiation participants to achieve success in dynamic and complex business environments.

The high competition in the property industry requires companies to maintain high occupational safety and health (K3) standards. Data from the engineering division of PT Gaia Care International shows that in the period January-November 2023 there were 11 work accidents, with the majority being minor accidents and one fatal case. This study aims to identify potential risk hazards, analyze risk levels, and determine appropriate risk control measures.  The HIRARC method is used in three stages: Hazard Identification, Risk Assessment, and Risk Control. The results showed that there were various potential hazards such as electrocution, falling from stairs, and exposure to chemicals. The risk assessment classified 5 work activities as low risk, 43 as medium risk, and 2 as high risk and no extreme risk was found. Risk control efforts are carried out using fishbone diagrams and 5W+1H techniques to reduce or eliminate existing risks.  This research is expected to provide benefits for companies in reducing the number of work accidents and become a reference in implementing better OHS policies, as well as providing additional insight for readers regarding the importance of risk analysis in creating a safe and healthy work environment.    

The ignition system is an important system in a vehicle. Currently, the level of emissions produced by vehicles continues to increase every year. This can be caused by high fuel consumption values. The solution to this is to improve the quality of the spark plug by adding a capacitor to the ignition/ignition capacitor. The way the Plasma Capacitor Igniton works is by adding a high voltage non-polar capacitor which is connected in parallel to the output coil. The experimental method will be carried out using quantitative methods. By installing ignition plasma capacitors with different capacitor sizes of 1.5 mF (STD), 440 pF, 660 pF installed in parallel with the spark plug wires with variations in engine speed running from 1500 – 5500 rpm to check emissions. To check the fuel consumption value for Rpm 4500 - 9500 which has been adjusted previously. Fuel Consumption Test Results The use of 440 pF capacitors generally provides an increase in SFC efficiency at most engine speeds, with the largest percentage reduction at RPM 5500 (22.64%). The use of 660 pF capacitors shows varying results. At some RPMs, such as 5500, the SFC actually increases (3.77%), while at other RPMs such as 6500, it shows a significant decrease (27.66%).

The use of automation systems is needed in sorting, one of which is the sorting of objects based on the size of the object being sorted. Especially in the sorting process, there are still many industries that use conveyors that only function for one product with the same weight characteristics. Therefore, to sort the same goods with different weights, a separate conveyor is needed so that many conveyors are used. The development of a sorting machine is an important aspect in the modern automation and manufacturing industry. This research aims to design and analyze the static loading of the sorting machine frame using SOLIDWORKS software. The design method used includes detailed 3D modeling of the machine frame by considering the strength, stability and reliability of the structure. The simulation results using SOLIDWORKS software show the stress (von Mises) with a maximum value of 82.26 MPa, while the theoretical calculation result is 84 MPa. Displacement with a maximum value of 4.063 mm, while the theoretical calculation result is 1.60 mm. The safety factor is 2.38, while the theoretical calculation result is 2.43. The difference between manual calculation and simulation is 0.02% for von Mises stress, 1.5% for displacement, and 0.02% for safety factor.

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.

Carrying out construction activities is a complicated activity, problems often occur in the implementation of construction projects causing the owner to experience losses, obstacles that are often faced include delays in project completion time, project cost overruns and inconsistencies in the quality and quality of construction projects. As a solution, competent experts are needed who can manage and control construction projects to avoid the obstacles that often occur. Young Construction Management Experts are one of the experts regulated in SKKNI No. 390 of 2015 to manage and control all activities starting from the planning, design, tendering, implementation, to the post-implementation stages of construction projects. This article aims to identify the competencies needed to become a Young Construction Management Expert using the literature study method. The results obtained were 30 competencies of Young Construction Management Experts which were grouped into 3 aspects, namely knowledge aspects, skills aspects and attitude aspects. These 30 competencies were obtained from SKKNI and relevant journals and books.  

Universitas Teknologi Yogyakarta (UTY) operates several computer laboratory rooms used daily by students according to their scheduled times. Sometimes, these rooms experience sudden schedule changes, causing conflicts with other room bookings. This research aims to employ an Augmented Reality (AR)-based application for monitoring the dynamic schedule of lab room usage. The method utilizes a marker-based AR application, tested through black box implementation. The application successfully reads markers at distances of 10–90 cm, tilt angles of 10–80 degrees, and light intensities ranging from 40 to 250 lux. Under these conditions, the markers are readable, and the application responds by displaying virtual objects. Users of the lab rooms can utilize this AR application to identify changes in the scheduled usage plans at UTY as they occur.    

Coal is one of the energy sources that is the basis for meeting energy and electricity needs in various countries, including Indonesia. Coal obtained from mining contains impurities, which can occur during coalification or during the mining process. There are impurities elements found in coal such as sulfur, ash and various other minerals found in coal. The sampling location was carried out at the mining location at PT Bukit Baiduri Energi, Kutai Kartanegara Regency, East Kalimantan Province. The solutions used in the deashing process using the leaching method are NaOH and HCl.  

The activity of dismantling shale sometimes does not align with the rating of the shale itself. Although shale generally has low durability, some types of shale exhibit considerable strength. Therefore, if the tools used are not suitable, the excavation process becomes inefficient. One shale classification method proposed by Franklin (1982) is by determining the value of slake durability index, plasticity index, and point load index. If the slake durability value exceeds 80 percent, testing continues with point load testing. However, if the slake durability value is below 80 percent, then liquid limit and plastic limit tests are conducted to obtain its plasticity index. This study is applied to the Kampungbaru Formation at PT Bintang Prima Energi Pratama. The shale testing results of the Kampung Baru Formation at PT Bintang Prima Energi yielded slake durability index values below 80 percent, thus the shale ratings based on slake durability index and plasticity index values, for KB1BL1 are 4.2; KB1BL2: 3.5; KB1BL3: 2.55; KB1BL4: 3.35; KB1BL5: 3.15; and KB1BL6: 3.65. With an average shale rating value of 3.57. The excavation tool used for these rocks is a backhoe.

The three main factors determining combustion efficiency in Otto engines are optimal compression pressure, effective ignition, and fuel quality. In this study, two critical variables—fuel pump pressure (38, 43, and 48 Psi) and fuel type (RON 90 and RON 92)—were analyzed to understand their impact on specific fuel consumption (SFC). An experimental research method was employed to test the effect of independent variables on dependent variables under controlled conditions. The results indicate that a fuel pump pressure of 43 Psi provides the most stable and efficient fuel consumption performance for both fuel types across the entire engine speed range. A fuel pump pressure of 38 Psi is optimal at medium engine speeds but less efficient at high speeds, whereas a pressure of 48 Psi is most efficient at low to medium speeds but decreases in efficiency at high speeds. Overall, RON 92 fuel shows an efficiency improvement over RON 90, particularly at medium to high engine speeds. The combination of a fuel pump pressure of 43 Psi and the use of RON 92 fuel is recommended to achieve optimal specific fuel consumption, as it provides consistent efficiency across various engine operating conditions.

Rock strength has an important role in the mining industry. These forces can determine many aspects of mining such as slope geometry, excavation, blasting, and drilling. Rock strength can include tensile strength, compressive strength, and shear strength. In this case, the test is carried out to determine the correlation of uniaxial compressive strength and indirect tensile strength. The method used to determine the correlation of compressive strength and indirect tensile strength is by linear regression approach, which will then be analyzed for accuracy through Root Mean Square Error (RMSE), and Mean Absolute Percentage error (MAPE). This study used quantitative and qualitative methods, starting from the coordinate data of rock sampling locations, physical properties and mechanical properties. In this study, there were 6 sampling locations located in 2 different areas, namely Loa Janan and Sanga-sanga. The secondary data used are regional geological maps and maps of the area where the study is located. Furthermore, secondary data is processed using Arcgis software for mapping, and using Microsoft Excel software to assist in calculations in determining the value of physical and mechanical properties of rocks. The results of the compressive and tensile strength tests in this study showed a perfect corelation using linear regression, namely UCS= 3.9582 σt - 0.4004, with a correlation coefficient (R) of 0.972 and a determination coefficient (R2) of 0.945. and obtained RMSE 0.033 and MAPE 5.89%.

The main purpose of this study is to investigate in depth regarding the planning of electrical panels to be used in elevator systems. The method used is a literature study followed by the creation of panels and data collection. This process starts from the initial stage, namely making drawings of the electrical panel series, then continues with construction planning and installation of the overall elevator system. Selain itu, pengecekan berkala terhadap kualitas lift yang dipasang juga menjadi fokus utama dalam penelitian ini. This is important to ensure that elevators operating in these tall buildings can maintain safety and comfort when used by people and in the process of transporting goods to various floors of the building. Thus, it is hoped that the results of this study can make a meaningful contribution in improving the efficiency and safety of vertical transportation within modern high-rise buildings.

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 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.    

Carrying out work practices in this industry is one of the requirements for the industrial practice course. This practical activity aims to find out directly the state of the industry in terms of work readiness. The aim of this industrial practice activity focuses on finding out what components are contained in the Star-Delta hydrant pump panel, knowing the process of installing the Star-Delta hydrant pump panel and knowing how the Star-Delta panel works. In implementing this industrial practice, observation methods, library observations and interviews are used. PT. Tiga Kreasi Indonesia is a company that operates in the field of manufacturing electrical panels, with one of its products being Star-Delta hydrant pump panels to stabilize air pressure in hydrant pump lines. The hydrant pump's star delta panel functions to control and secure what happens if undesirable things happen, such as protecting a building or factory. This research produces new knowledge and understanding regarding the design of Star-Delta Panel hydrant pumps which are widely used in homes, factories and offices to minimize the occurrence of fires.

This study aims to analyze the effect of macro fundamentals, capital structure, ownership structure on firm value with profitability as an intervening variable in agri-food companies listed on the Indonesia Stock Exchange from 2014 to 2023. This research uses documentation studies as a data collection technique and for data processing, Smart-PLS (Partiral Lerast Squarers) is used. The results show that capital structure has a significant influence on firm value, while ownership structure does not show a significant influence. In addition, profitability is proven to be an intervening variable that strengthens the relationship between capital structure and firm value, but does not strengthen the relationship between firm size and firm value. These findings provide important implications for the management of Agri-Food companies in making decisions related to financing and ownership strategies to increase firm value.

IPAL sludge in the Industrial Estate until now has not been able to be utilized properly, the utilization of IPAL sludge into flower pots is one of the efforts to overcome the problem of IPAL sludge waste. The purpose of this study was to determine the variations in each experiment, the characteristics of flower pots from IPAL sludge in each experiment, and the difference in ratios in each experiment. The method used is the solidification methods, which is the process of adding materials that can solidify waste to form a solid waste mass. Experiments were conducted with different mixtures of old newspapers, water, and cement to produce optimal flower pots. Of the three experiments that have been carried out, all experiments were carried out successfully and obtained the same ratio results, but have different characteristics. The implementation of this method is expected to be an example of sustainable waste management and provide benefits to the environment and society, and has the potential to support farming activities and can be a superior product in the handicraft business.  

Waste sludge is sludge that contains a lot of solids resulting from solid-liquid separation from industrial waste. The waste sludge produced from the waste processing process will create new problems in handling because it can pollute the environment. This research will discuss the use of IPAL sludge originating from the Sludge Drying Bed (SDB) to be used as organic fertilizer. In the process of making organic fertilizer in the cake and snack industry by monitoring parameters such as color, texture, smell and properties of organic fertilizer during the process of making organic fertilizer. The characteristic results obtained in this research are blackish brown color, rough texture, earthy odor and the resulting moisture is dry. Thus, the use of WWTP sludge as organic fertilizer offers an innovative and industrial solution that contributes positively to the environment.  

Derverlopmernts irn ther irndustriral world arer currerntly verry rapird, girvirng rirser to tirght compertirtiron for irnverstors or busirnerss actors.  As ther erconomy contirnuers to derverlop, erverry company wants to dermonstrater irts berst capabirlirtirers comparerd to irts compertirtors, so that to boost operratironal perrformancer ther company rerquirrers addirtironal capirtal.Thirs rerserarch airms to erxamirner and analyzer ther irnfluerncer of macro fundamerntals and mircro fundamerntals on firnanciral perrformancer wirth company sirzer, profirt managermernt and company characterrirstircs as irnterrvernirng companirers irn ther food and berverrager subserctor lirsterd on ther Irndonersiran Stock Erxchanger. Thirs study focusers on companirers lirsterd on ther Irndonersira Stock Erxchanger (BErIr), whirch provirders irmportant conterxt consirderrirng ther dynamircs of firnanciral markerts irn Irndonersira. Ther macro fundamerntals analyzerd irncluder erconomirc varirablers such as irnflatiron, irnterrerst raters and erxchanger raters, whirler ther mircro fundamerntals irncluder irnterrnal company factors such as firnanciral ratiros and managermernt stratergirers. Company sirzer irs derterrmirnerd baserd on total asserts, whirler erarnirngs managermernt irs merasurerd through accrual practircers and manirpulatiron of firnanciral statermernts. Company characterrirstircs irncluder ownerrshirp structurer, company ager, and irndustry serctor. Ther populatiron irn thirs study was 30 food and berverrager subserctor companirers lirsterd on ther Irndonersiran Stock Erxchanger. Ther merthod userd irn thirs rerserarch irs random samplirng wirth a sampler sirzer of 3 companirers. Ther data analysirs terchnirquer irn thirs rerserarch users ther Smart PLS (Partiral Lerast Squarer) program verrsiron 4. Ther rerserarch rersults show that of ther 13 hypothersers creraterd, 6 hypothersers werrer accerpterd and 7 hypothersers werrer rerjercterd. Firnanciral perrformancer as four irnterrvernirng varirablers also has irnsirgnirfircant rersults.

Sludge is a by-product of an activity that comes from the discharge outlet of the flocculation, sedimentation and backwash filtration basins. To determine the volume of sludge contained in one liter of raw water, it is necessary to conduct a Jartest Test by determining the optimum dose of PAC. This water sampling was carried out at the Krian 1 Water Treatment Plant (IPA). Primary data collection is obtained from Imhoff Cone Results data. While for secondary data collection we get from Jartest data.  The manufacture of the coagulant solution used is Poly Aluminum Chloride (PAC). The average turbidity value in February was around 123 NTU and there was an increase in turbidity on the seventh day which reached 237 NTU. The drastic increase in turbidity reached 455 NTU with an average turbidity in March of 130 NTU. The graph shows that there is a significant correlation between the volume of sludge produced during the treatment process and the level of water turbidity. Thus, the researcher suggests further treatment of the remaining sludge which can be done by making a Sludge Drying Bed (SDB).