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Hang Nadim International Airport in Batam is a growing air transportation hub, driven by increasing public mobility and aviation activity. Ground handling services in the airside area are crucial, particularly for buses transporting passengers to and from aircraft. However, several issues persist, such as late pick-ups, unsafe bus conditions, and frequent technical disruptions. This study aims to identify the role of PT Lion Group bus drivers in supporting ground handling services and analyze the impact of bus breakdowns on driver performance at the airport. The method used was descriptive qualitative, using observation, interviews, and documentation. Interviews were conducted with drivers, technicians, and Apron Movement Control (AMC) officers to obtain data on technical challenges and operational coordination. Observations were conducted during On-the-Job Training (OJT), and documentation was used to support the validity of the data. The results indicate that bus drivers play a crucial role in ensuring smooth ground handling services, but are frequently hampered by technical breakdowns, such as engine and braking system problems, which impact passenger comfort and On-Time Performance (OTP). Recommendations include improving bus maintenance, providing a backup fleet, and providing technical training for drivers to improve service effectiveness.

Baggage handling is a crucial aspect of airline operations, including the lost and found unit, which handles lost, damaged, exchanged, and found baggage issues. At Juanda International Airport in Surabaya, these issues remain common. This study aims to analyze the performance of Citilink's lost and found officers in handling various baggage issues and evaluate the unit's productivity, efficiency, and effectiveness. The method used was descriptive qualitative research with a case study approach, collecting data through observation, semi-structured interviews with officers, and documenting operational procedures and baggage handling reports. The results indicate that lost and found officers play a crucial role in post-flight service, from receiving reports to providing compensation. Although procedures are carried out according to SOPs, obstacles such as a lack of manpower and a manual reporting system slow down the process. Officer performance is quite good, but efficiency improvements and the use of technology are needed, such as further training and a modern baggage tracking system.  

This study investigates the comparative use of satire and sarcasm in the criminal comedy show Lapor Pak! episode “Pasukin Naik Gaji.” Satire and sarcasm are both rhetorical devices used to criticize social realities through humor, but differ in subtlety and sharpness. The aim of this research is to identify and analyze the forms and meanings of satirical and sarcastic expressions in the show’s dialogues. This study uses a qualitative descriptive method and applies stylistic theory and humor theory as the analytical framework. The data source is a 26-minute episode aired on the 7Comedy YouTube channel on January 8, 2025. From the linguistic data collected, 20 utterances were found: 15 contain sarcasm, 11 irony, and 9 satire (some overlapping). The findings show that sarcasm is used more dominantly than satire, often reflecting economic frustration, while satire criticizes social issues in a more humorous and indirect way. Both styles serve not only to entertain but also to reflect social resistance and expose systemic injustice, especially regarding economic inequality. The analysis concludes that humor becomes a linguistic tool of social commentary and coping mechanism for workers.

This study examines the potential of Nusa Lembongan Ecotourism in developing sustainable tourism with an environmental perspective. The formulation of the problem studied in this research is “(1) What potential does Nusa Lembongan Ecotourism have in developing environmentally friendly sustainable tourism (2) How does Nusa Lembongan Ecotourism relate to environmentally sustainable tourism”. The method used is qualitative research with a descriptive approach to understand the phenomena experienced by the research subject. Data collection techniques include literature study and documentation. The findings show 1) The potential of Nusa Lembongan as one of the ecotourism-based tourist attractions offers a lot of amazing natural beauty that attracts the attention of tourists to visit and unwind by the hustle and bustle of the city air, not only local tourists but also many foreign tourists visit Nusa Lembongan because of the potential offered 2) Sustainable development is a strategy that limits the utilization of ecosystems and natural resources so that they are maintained. One of the new tourist destinations that is increasingly popular is the beauty of Nusa Lembongan Island.

This study explores the metaphor of life in Colleen Hoover’s novel Reminders of Him, aiming to identify the types of linguistic metaphors and analyze the conceptual metaphors that underlie them. Based on Lakoff and Johnson’s conceptual metaphor theory, which classifies metaphors into structural, ontological, and orientational categories, this study highlights the role of metaphor as a cognitive tool, not merely a stylistic device. A qualitative method was employed, with data collected using AntConc software by focusing on parts of the novel containing the word “life.” The Metaphor Identification Procedure was applied to identify linguistic metaphors, which were then categorized based on the word class of the lexical units that were used metaphorically. The results of this study show four types of linguistic metaphors involving the noun “life”: nominal, verbal, adjectival, and prepositional. These forms portray life as a physical object, a process, a possessed attribute, or a container. These linguistic metaphors reflect eight conceptual metaphors, including five ontological metaphors (life is ownership, life is a container, life is an entity, life is air, life is a place) and three structural metaphors (life is a machine, life is a journey, life is a challenge). The diversity of these conceptual metaphors illustrates the rich representation of life in the novel.

This study presents an evaluation of the cooling load capacity in the departure apron corridor area at Supadio International Airport using the Cooling Load Temperature Difference (CLTD) method. The objective of the research is to assess whether the current air conditioning (AC) is adequate to meet thermal comfort requirements in a tropical climate characterized by high humidity and strong solar radiation. A detailed field survey was conducted at Gate 3, a glass-dominated corridor that experiences significant heat gain from solar exposure. Empirical data including temperature profiles, material properties, occupancy levels, and equipment specifications were collected over a two-week period using digital instruments. Using the CLTD method, the heat contributions from walls, roof, glass surfaces, occupants, lighting, and air infiltration were quantified. The results revealed that the installed AC (2 PK) only delivers about  of the required cooling load, with the total load estimated at 66,448 BTU/hr. The dominant sources of thermal gain include the roof and east-facing glass panels. The study recommends AC resizing, glass shading implementation, and improved insulation to enhance energy efficiency. This research contributes practical insights for HVAC optimization in airport infrastructure within hot-humid climates.

Suminagashi is a technique for decorating fabric or paper by dropping ink or paint onto the surface of water or a water-gelmixture, then placing the fabric or paper on the liquid so that the color is absorbed. The study aims to examine the effect of increasing water volume in acrilylic paint on the color quality of the suminagashi technique appiled too polyester scraves, specifially in terms of color sharpness and color absorption. Additionally, it investigates the variations in color outcomes across different water-to-point ratios. An experimental method was employed using three paint-to-water ratios 1:1, 1:2, and 1:3. Color quality was evaluated through observations by 30 respondents and analyzed using the Kruskal-Wallis H test with SPSS version 30. The result indicate that the volume of water in the acrylic paint mixture significantly influences color quality. The 1:1 ratio produced the higest color sharpness, while the 1:3 ratio showed the best color absroption. Distinct color differences were observed among the scarves produced with each ratio.

The development of construction materials is currently very rapid, including in the manufacture of fishing boats that still use wood. As an alternative, High Density Polyethylene (HDPE) plastic can replace wood because of its various advantages. The process of making fishing boats uses the plastic welding method, where the material is heated close to the melting temperature with a welding gun. The welding rod melts due to heat and is pressed continuously while the welding gun moves backward. This study aims to determine the effect of variations in the hot gas welding process on mechanical tests, especially bending tests on plastic welding joints. The two independent variables used are the hot gun temperature (250°C, 300°C, and 350°C) and the V bevel angle (60°, 75°, and 90°). The five controlled variables include the anvil temperature of 150°C, 3,2 mm thick HDPE plastic sheet, hot gas speed welding method, 5 mm diameter HDPE plastic additives, 7 liters/minute air flow rate, 1.2 mm/s welding speed, and 2 mm root gap. The research results are expected to obtain the maximum value of the bending test strength from the interaction of hot gun temperature variations and V-beam angles, as well as being a reference in making fishing boat bodies from HDPE using the hot gas welding method.

This study aims to analyze the effect of price on purchasing decisions with consumer satisfaction as a mediating variable on Nestlé Pure Life drinking water products. The type of research used in this study uses a quantitative study by distributing questionnaires via google form which are distributed online.  The sample in this study were consumers who had bought nestle pure life drinking water in the Yogyakarta area. The number of samples used in this study were 100 respondents. The analysis technique used in this study uses the SmartPls version 3 program with Convergent Validity, Factor Loading, Average Variane Extraked (AVE), Discriminant Validity, Fornel Larcker, Cross Loading, Reliability, Cronbach Alpha, Composite Reliability, R Square, and Hypothesis Testing tests. The results of this study indicate that price has a significant effect on customer satisfaction, price has a significant effect on purchasing decisions, customer satisfaction has a significant effect on purchasing decisions and the effect of price on purchasing decisions mediated by customer satisfaction.

Lungs are vital organs in the human respiratory system, responsible for fulfilling the body's oxygen needs. If the lungs experience health problems, it can have adverse effects on the human respiratory system. Common causes of lung diseases are usually due to inhaling air contaminated by dust, smoke, viruses, and bacteria. This study aims to compare the performance of two classification algorithms, namely Random Forest and Naive Bayes, in predicting lung diseases. The data used was obtained from the Kaggle website and processed using RapidMiner software. The attributes involved include smoking habits, pre-existing conditions, staying up late, exercise activities, age, and outcomes. Based on the test results, the Random Forest algorithm demonstrated the best performance with an accuracy of 93%, while the Naive Bayes algorithm achieved an accuracy of 87%. These findings indicate that the Random Forest algorithm outperforms the Naive Bayes algorithm in terms of lung disease prediction accuracy.

This study aims to examine the role of Project-Based Learning (PjBL) in fostering creativity among elementary school students, particularly in the respiratory system topic within Natural Science (IPA) learning. Creativity, as one of the essential 21st-century competencies, needs to be developed from an early age through learning approaches that are active, contextual, and student-centered. This research employs a qualitative method with a library research approach, utilizing various sources such as accredited scientific journal articles, relevant books, and previous research reports published between 2017 and 2025. Data were analyzed using the Miles and Huberman model, which consists of data reduction, data display, and conclusion drawing. The results show that the implementation of PjBL in the respiratory system topic effectively enhances student creativity through exploratory activities such as creating lung models, organizing clean air campaigns, and conducting simple experiments. PjBL also supports the development of collaborative skills, problem-solving abilities, and learning responsibility. In conclusion, PjBL is an effective and relevant instructional strategy to increase creativity and create meaningful learning experiences at the elementary school level, especially in science education.

Makanan Pendamping Air Susu Ibu (MP-ASI) merupakan sebuah proses penting yang mengedepankan kesiapan bayi dalam menyambut makanan yang akan dikonsumsinya. . Penelitian ini bertujuan untuk mengetahui bagaimana gambaran pengetahuan ibu tentang pemberian makanan pendamping ASI terlalu dini di klinik pratama citra periode mei-juni Tahun 2024. Penelitian ini menggunakan data primer dengan tehnik total samppling pengumpulan data menggunakan kuesioner dengan subyek penelitian 30 orang ibu yang mempunyai anak usia 0-6 bulan. Analisa data dalam bentuk distribusi frekuensi dengan persentase. Dari hasil penelitian ditemukan bahwa tingkat pengetahuan ibu tentang pemberian makanan tambahan pendamping ASI terlalu dini di klinik pratama citra periode mei-juni Tahun 2024, berdasarkan Umur  mayoritas pada umur 20-35 tahun sebanyak 10 orang (33,33%) dan minoritas berpengetahuan baik dan cukup berdasarkan umur <20 tahun dan 20-35 tahun masing-masing sebanyak 2 orang (6,67%), berdasarkan pekerjaan ibu yang bekerja sebanyak 8 orang (26,67%) dan minoritas berpengetahuan baik berdasarkan ibu nifas yang tidak bekerja sebanyak 1 orang (3,33%), berdasarkan pendidikan ibu pada tingkat pendidikan perguruan tinggi sebanyak 7 orang (23,33%) dan minoritas berpengetahuan kurang berdasarkan pendidikan SMA sebanyak 1 orang (3,33%). Dari penelitian ini diharapkan kepada ibu yang memiliki bayi berusia 0-6 bulan di klinik pratama citra agar lebih banyak mencari informasi dan meningkatkan lagi pengetahuan tentang pemberian makanan pendamping ASI terlalu dini.

In response to increasing competition in the manufacturing sector, PT X—a copper busbar manufacturing company—implemented Lean Manufacturing supported by Value Stream Mapping (VSM) to improve production efficiency and reduce supply chain costs. This study utilizes VSM, Value Stream Analysis Tools (VALSAT), and Root Cause Analysis (5 Whys) to identify sources of waste and formulate improvement strategies. The analysis identified three dominant wastes: waiting time, product defects, and excess inventory. These were mainly caused by the lack of standardized material procedures, inadequate supporting equipment, and poor integration between the incoming inspection process and the Enterprise Resource Planning (ERP) system. To address these issues, the study proposes installing silica rolls, providing air wipers and flatness tools, developing standardized work instructions, and integrating Internet of Things (IoT) technology with the ERP system for real-time monitoring. As a result of implementing these solutions, PT X successfully reduced its defect rate from 6.23% to 1.32%, decreased lead time, and achieved notable savings in supply chain costs. The findings demonstrate that integrating Lean Manufacturing principles with VSM can effectively eliminate non-value-added activities, streamline production processes, and enhance overall competitiveness. This study reinforces the strategic value of Lean tools in continuous improvement initiatives within the manufacturing industry.

3D printing technology is rapidly developing and being used in various fields. One of the main factors affecting print quality is the filament, with ABS being a popular material due to its eco-friendliness, ease of printing, and good mechanical strength. To achieve precision, the filament diameter must be consistent, around 1.75 mm or 2.85 mm according to the design nozzle diameter. The production of ABS filament uses a single screw plastic extruder machine, where the material is melted, extruded, and then cooled. Two main factors that affect the final dimensions are the extrusion temperature and the cooling medium. Improper temperature can alter the viscosity of ABS melt, affecting the extrusion rate and diameter accuracy. Meanwhile, differences in cooling media, such as blower air and water, affect material shrinkage and dimensional stability. This research aims to analyze the influence of extrusion temperature variations and cooling media on the diameter of ABS filaments. Through experiments with varying parameters, the pattern of diameter changes will be analyzed to determine the optimal conditions that minimize dimensional deviations. The research results are expected to contribute to the optimization of ABS filament extrusion parameters to support the 3D printing industry with higher quality materials.

Lung adenocarcinoma is one of the most common types of lung cancer, especially in non-smoking women. This disease can develop progressively to cause complications such as pleural effusion and hydropneumothorax. Risk factors involved include exposure to secondhand smoke, air pollution, radon, and a history of previous tuberculosis. A 61-year-old woman came with complaints of right chest pain radiating to the back, shortness of breath, dry cough, weakness, and weight loss. The medical history showed that the patient had undergone chemotherapy for lung cancer and had a history of pulmonary tuberculosis that had been resolved. Supporting examinations such as CT-scan, bronchoscopy, and cytology showed a mass in the right lung inferior lobe and massive pleural effusion leading to a diagnosis of stage IVA right lung adenocarcinoma (T3N1M1A) complicated by hydropneumothorax. The patient underwent management in the form of chemotherapy, supportive therapy, and symptomatic care.

The impacts of wastewater (liquid waste) include contamination and pollution of surface water and other water bodies utilized by humans, as well as disruption to aquatic life. Wastewater generated from plate washing processes in offset printing industries contains toxic substances that can harm the environment, such as ink pigments, additives, alcohol, and other hazardous chemicals. This study aims to reduce the environmental impact caused by plate washing wastewater. The method used in this research is the Jar Test, which is commonly applied to evaluate the effectiveness of coagulants in water and wastewater treatment. Based on the findings, this method successfully reduced the Total Dissolved Solids (TDS) level by 18%. These results indicate that the use of alum as a coagulant has a significant effect on altering the chemical composition of the plate washing wastewater, thereby contributing to pollution reduction

This study aims to examine the effect of Gapura Angkasa's pre-flight service quality on passenger satisfaction of Citilink Airlines at Lombok International Airport. Service quality is crucial in the airline industry, as it directly affects passenger satisfaction — a reflection of their emotional response to the services received. A quantitative method was used, with data collected through questionnaires distributed to Citilink passengers in Yogyakarta who had flown via Lombok International Airport. The data were analyzed using simple linear regression, t-test, and coefficient of determination with the help of SPSS v.25. The results show that the t-value (22.321) is greater than the t-table (1.660), with a significance level of 0.000 < 0.05, indicating that the alternative hypothesis (Ha) is accepted. This means Gapura Angkasa’s pre-flight service has a positive and significant effect on Citilink passenger satisfaction. The coefficient of determination (0.834) indicates that 83.4% of passenger satisfaction is influenced by pre-flight services, with a very strong correlation (correlation coefficient of 0.914).

This study evaluates the implementation of water source conservation and conservation forest policies in Tuban Regency that integrate collaborative methods between various parties and local wisdom. Using a descriptive qualitative approach, data collection was conducted through in-depth interviews with staff from the Environmental Service, representatives of environmental NGOs, traditional leaders, and local communities, coupled with field observations related to the “Adopt a Spring” and “Forest School” programs. The results of the study indicate that the success of the policy is not only supported by local regulations, but also by collaboration involving the government, local communities, the private sector, and educational institutions. Local wisdom, such as the “nyadran sumber” ceremony and traditional protected forest methods, increase the legitimacy and effectiveness of environmental protection. However, obstacles arise as a result of lack of funds, economic pressures, and changes in values ​​among the younger generation. This study suggests sustainability education and cross-sector collaboration forums, strengthening sustainable economic schemes based on ecotourism and agroforestry, and contextual environmental education to maintain the sustainability of the program. These results confirm that conservation policies integrated with local wisdom and cross-sector collaboration can be an innovative model for other regions, while strengthening the paradigm of sustainable development that is responsive to the existing socio-cultural context.

The continuous operation of airlock machines in wheat milling facilities plays a critical role in the material handling system, especially in the transfer of grain from ships to silo storage. At PT XYZ, the airlock machine has been identified as the equipment with the highest frequency of downtime over a three-month observation period, leading to significant disruptions in production flow and increased corrective maintenance costs. This study aims to analyze the failure modes of the airlock machine using the Failure Mode and Effect Analysis (FMEA) method and to develop preventive maintenance recommendations based on the highest Risk Priority Number (RPN) values. The research adopts a quantitative descriptive approach, involving field observations, interviews with maintenance personnel, historical breakdown analysis, and machine technical documentation review. The FMEA results indicate that the seal, gear, and bearing are the most critical components, with RPN values of 224, 210, and 192, respectively. These components are prioritized for preventive actions such as regular seal replacement, scheduled lubrication, gear inspections, and motor monitoring. Simulation of the proposed maintenance strategy demonstrates a 66.7% reduction in downtime, from 18 hours to 6 hours per month, and a 43.7% reduction in total maintenance costs, from Rp 9,034,500 to Rp 5,087,500 monthly. These results validate the effectiveness of the FMEA method in identifying risk-prone components and optimizing maintenance planning. It is recommended that PT XYZ institutionalize periodic FMEA updates and establish a cross-functional analysis team to continuously monitor and improve equipment reliability.

This study aims to examine the realization of Grice’s cooperative principles in transactional speech acts between sellers and buyers at the Depo Air Minum Isi Ulang Sehat Lestari (Healthy Refill Drinking Water Depot). The cooperative principles consist of four maxims: quantity, quality, relevance, and manner. The research is motivated by the importance of effective communication in sales interactions, particularly to avoid misunderstandings in conveying intentions and information. A qualitative descriptive method was employed, with data collected through participatory observation and recorded conversations. The findings indicate that all four maxims were naturally realized in daily interactions. Utterances such as “Mas, air satu” (“One gallon, please”), “Air galon segar loh” (“The water is fresh”), and “Tolong kirim air 10 galon” (“Please deliver 10 gallons”) reflect contextually appropriate and functionally effective applications of the maxims. Furthermore, the use of concise, clear, and straightforward speech structures shows that the cooperative principles are not only evident in content but also in the linguistic form used. These findings highlight that communication in micro-level services such as water refill depots tends to be pragmatic, efficient, and shaped by local social norms and contextual understanding.